CN110165636A

CN110165636A - A kind of excess temperature protection method, device and electronic equipment

Info

Publication number: CN110165636A
Application number: CN201910351390.XA
Authority: CN
Inventors: 邓旭同; 王朝; 罗伟; 赵楠; 宋武举; 张亮
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2019-04-28
Filing date: 2019-04-28
Publication date: 2019-08-23

Abstract

The embodiment of the present application discloses a kind of excess temperature protection method, device and electronic equipment; it is related to field of electronic device; it solves due to estimating inaccuracy to motor temperature; caused by caused temperature control measures false triggering and motor within the scope of motor normal working temperature works under excess temperature environment for a long time the problem of motor damage.The specific scheme is that over-temperature protection device obtains the input voltage V of the first moment motor₂With output voltage V₁, obtain the input voltage V of the second moment motor₂' and output voltage V₁'；The operating resistance for determining the first moment motor determines the operating resistance of the second moment motor；Obtain the environment temperature of the first moment electronic equipment；According to the operating resistance of the first moment motor, the operating resistance and environment temperature of the second moment motor, the operating temperature of the second moment motor is determined；When operating temperature is more than threshold value, over-temperature protection device start-up temperature protection mechanism.During the embodiment of the present application is used in electronic equipment to elevating mechanism motor overheat protector.

Description

A kind of excess temperature protection method, device and electronic equipment

Technical field

This application involves field of electronic device more particularly to a kind of excess temperature protection methods, device and electronic equipment.

Background technique

Some functional modules would generally be set in electronic equipment for realizing respective function, it is as preposition in that can be provided in mobile phone Camera and rear camera are for realizing taking pictures, the functions such as video recording.At the design initial stage of electronic equipment, for each function The considerations of protection and equipment overall appearance of module, each functional module generally can be all embedded in electronic equipment machine body.And With large-size screen monitors accounting popularizing in the electronic device, being originally embedded in the intracorporal functional module of electronic equipment machine can be due to display screen Barrier, cannot achieve its original function.If if front camera is using traditional embedded stack manner, due to display screen Barrier, optical signal can not be directly acquired from electronic equipment front, to can not work normally.

To solve the above-mentioned problems, lifting technology is introduced in the design of electronic equipment.For example, by front camera frame It is located on elevating mechanism.When user needs using front camera, elevating mechanism releases front camera after display screen, It works.After user's use, front camera is retracted original position by elevating mechanism, it is ensured that is protected while complete machine beauty Front camera.

The work of elevating mechanism is realized by motor internal, if elevating mechanism working frequency is high, motor will be because Motor temperature is caused to significantly rise for frequent operation.When temperature is more than motor heatproof level, it may appear that under work noise, thrust The problems such as drop cannot even be released.If, can be by motor with reference to the scheme protected in the prior art to complete machine temperature Thermistor is nearby set to detect peripheral temperature, to realize temperature protection to motor according to the temperature detected.But by It is complicated in complete machine temperature environment, it is difficult to accurately estimate that motor temperature, the motor temperature of this inaccuracy are estimated according to peripheral temperature, It may cause the temperature control measures false triggering within the scope of motor normal working temperature, it is also possible to cause motor for a long time in excess temperature ring The damage of motor caused by working under border.

Summary of the invention

The embodiment of the present application provides a kind of excess temperature protection method, device and electronic equipment, solves due to motor temperature Estimation inaccuracy, caused temperature control measures false triggering and motor within the scope of motor normal working temperature is for a long time in mistake The problem of damage of motor caused by working under warm environment.

In order to achieve the above objectives, the embodiment of the present application adopts the following technical scheme that

In a first aspect, the embodiment of the present application provides a kind of excess temperature protection method, this method is applied to over-temperature protection device, mistake The overheat protector of temperature protection device elevating mechanism for electronic equipment, elevating mechanism include motor, and be connected to motor Retractable supports portion, motor is able to drive retractable supports portion when working flexible.This method may include: that over-temperature protection device obtains Take the input voltage V of the first moment motor₂With output voltage V₁, the input voltage of over-temperature protection device the second moment motor of acquisition V₂' and output voltage V₁', at the time of the first moment was that motor does not work, at the time of the second moment was motor work, and when second It was later than for the first moment quarter；Over-temperature protection device is according to the input voltage V of motor₂With output voltage V₁, determine the first moment motor Operating resistance, according to the input voltage V of motor₂' and output voltage V₁', determine the operating resistance of the second moment motor；Excess temperature is protected Protection unit obtains the environment temperature of the first moment electronic equipment；Over-temperature protection device according to the operating resistance of the first moment motor, The operating resistance and environment temperature of second moment motor determine the operating temperature of the second moment motor；When operating temperature is more than When threshold value, over-temperature protection device start-up temperature protection mechanism.

In this way, input voltage and output voltage by measurement motor in different moments, to obtain motor in different moments Operating resistance, and then estimate the operating temperature of motor after a period of operation, the motor operating temperature of this method estimation, It is more accurate compared to the temperature using the motor estimated in the thermistor that motor periphery is arranged, on this basis to electricity Machine carries out overheat protector, and the triggering of control temperature protection mechanism that can be more accurate is also dropped while effectively protecting motor The low false triggering probability of temperature protection mechanism.

With reference to first aspect, in one possible implementation, over-temperature protection device start-up temperature protection mechanism, packet Include: over-temperature protection device controls motor in preset duration since the second moment and stops working.In this way, motor is excessively high in temperature In the case where by control motor stop working, protect motor.

With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, in overheat protector Device stops since the second moment in preset duration after powering to motor, further includes: over-temperature protection device is when default After length, control motor is resumed work.In this way, being resumed work by controlling motor, after motor temperature reduction so that receiving To user's input when being used to indicate the operation that elevating mechanism works, motor can control elevating mechanism and make respective response, improve The usage experience of user.

With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, preset duration is 20-30 seconds.

With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, electronic equipment is also Including driving unit, work for driving motor；Driving unit includes: power supply unit, transistor and current sense resistor；Its In, the input terminal of power supply unit and motor connects, and the output end of motor and the first end of transistor connect, the second end of transistor It is connect with the first end of current sense resistor, the second end ground connection of current sense resistor；Over-temperature protection device is according to the defeated of motor Enter voltage V₂With output voltage V₁, the operating resistance of the first moment motor is determined, according to the input voltage V of motor₂' and output electricity Press V₁', determine the operating resistance of the second moment motor, comprising: over-temperature protection device is according to output voltage V₁And current sense resistor Resistance value determine the operating current of the first moment motor, according to the input voltage V of motor₂With output voltage V₁Determined for the first moment The operating voltage of motor, according to the operating voltage of the operating current of the first moment motor and the first moment motor, when determining first Carve the operating resistance of motor；Over-temperature protection device is according to output voltage V₁' and the resistance value of current sense resistor determined for the second moment The operating current of motor, according to the input voltage V of motor₂' and output voltage V₁' determine the operating voltage of the second moment motor, root According to the operating current of the second moment motor and the operating voltage of the second moment motor, the operating resistance of the second moment motor is determined. In this way, outputting and inputting voltage according to the first moment of motor and the second moment, it is determined that motor is real-time the second moment Operating resistance realizes the real time monitoring for motor status.

With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, output voltage V₁ It is the voltage or output voltage V of the output end of the first moment motor₁It is the electricity of the first end of the first moment current sense resistor Pressure；Output voltage V₁' be the second moment motor output end voltage or output voltage V₁' it is the second moment current sense resistor First end voltage.In this way, can be acquired to the output voltage of motor difference from circuit, be conducive to the application side The implementation of case.

With reference to first aspect with above-mentioned possible implementation, in alternatively possible implementation, overheat protector is filled The operating resistance and environment temperature for setting the operating resistance according to the first moment motor, the second moment motor, determined for the second moment The operating temperature of motor, comprising: over-temperature protection device is according to the work of the operating resistance, the second moment motor of the first moment motor The thermal sensitive resin of the winding of resistance, environment temperature and motor determines the temperature rise of the operating temperature of motor；Over-temperature protection device root According to temperature rise and environment temperature, the operating temperature of the second moment motor is determined.In this way, by determining that motor is real-time at the second moment Temperature realizes the real time monitoring for motor operating temperature, improves temperature control precision.

Second aspect, the embodiment of the present application provide a kind of excess temperature protection method, and this method is applied to over-temperature protection device, mistake The overheat protector of temperature protection device elevating mechanism for electronic equipment, elevating mechanism include motor, and be connected to motor Retractable supports portion, motor is able to drive retractable supports portion when working flexible；This method may include: that over-temperature protection device obtains Take motor that retractable supports portion is driven to be stretched from the 1st time to the m times the first flexible duration；When the first duration is default less than first When duration, over-temperature protection device start-up temperature protection mechanism.

In this way, judging that motor whether there is by the time of the motor continuous work fixed number of times under corresponding environment temperature The risk of overheat, and overheat protector measure is taken, it is realized on the basis of not increasing hardware design to motor in elevating mechanism Overheat protector, compared to the scheme for judging motor temperature by thermistor, control temperature protection mechanism that can be more accurate Triggering, the false triggering probability of temperature protection mechanism is also reduced while effectively protecting motor.

In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, overheat protector dress Set start-up temperature protection mechanism, comprising: over-temperature protection device controls motor and stops in the second preset duration since current time Only work.In this way, stopping working under the excessively high environment of temperature by controlling motor, motor is protected.

In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, in overheat protector Device is controlled in the second preset duration since current time after motor stops working, further includes: over-temperature protection device exists After second preset duration, control motor is resumed work.In this way, resumed work after motor temperature reduction by controlling motor, So that motor can control elevating mechanism and make accordingly in the operation for being used to indicate elevating mechanism work for receiving user's input Response, improves the usage experience of user.

In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, overheat protector side Method further include: the environment temperature of over-temperature protection device acquisition electronic equipment；Over-temperature protection device is closed according to environment temperature and mapping System obtains the first preset duration, and mapping relations include the corresponding relationship of environment temperature Yu the first preset duration.In this way, by reflecting The first preset duration at a temperature of relationship adjustment varying environment is penetrated, guarantees that motor can will not all go out under different environment temperatures Now the case where caused excess temperature work excessively high due to working frequency.

In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, m is 10 times；It reflects The relationship of penetrating includes at least one following corresponding relationship: environment temperature is 45 DEG C, and the first preset duration is 30 seconds；Environment temperature is greater than 45 DEG C and be less than or equal to 55 DEG C, the first preset duration is 30 seconds.

Work as environment temperature in alternatively possible implementation in conjunction with second aspect and above-mentioned possible implementation It is 45 DEG C, the second preset duration is 20 seconds；When environment temperature is greater than 45 DEG C and is less than or equal to 55 DEG C, the second preset duration is 30 seconds.

In conjunction with second aspect and above-mentioned possible implementation, in alternatively possible implementation, this method is also wrapped Include: when the first duration is greater than the first preset duration, over-temperature protection device obtains motor and retractable supports portion is driven to stretch from the 2nd time It is reduced to the m+1 times the second flexible duration；When the second duration is less than the first preset duration, over-temperature protection device start-up temperature is protected Protection mechanism.This way it is ensured that when the first duration be greater than the first preset duration when, that is, motor work it is excessively not frequent when, By judging the 2nd time to the m+1 times duration and the relationship of the first preset duration, it is determined whether after Yao m+1 task Start overheat protector mechanism, it is ensured that motor is not at over-temperature condition at work.

The third aspect, the embodiment of the present application provide a kind of over-temperature protection device, and over-temperature protection device is for electronic equipment The overheat protector of elevating mechanism, elevating mechanism include motor, and the retractable supports portion being connected to motor, energy when motor works Enough drive retractable supports portion flexible；Over-temperature protection device includes: acquiring unit, determination unit and temperature protection unit；Wherein, Acquiring unit, for obtaining the input voltage V of the first moment motor₂With output voltage V₁, obtain the input electricity of the second moment motor Press V₂' and output voltage V₁', at the time of the first moment was that motor does not work, at the time of the second moment was motor work, and second Moment was later than for the first moment；Determination unit, for the input voltage V according to motor₂With output voltage V₁, determine the first moment electricity The operating resistance of machine, according to the input voltage V of motor₂' and output voltage V₁', determine the operating resistance of the second moment motor；It obtains Unit is taken, is also used to obtain the environment temperature of the first moment electronic equipment；Determination unit is also used to according to the first moment motor The operating resistance and environment temperature of operating resistance, the second moment motor determine the operating temperature of the second moment motor；Temperature Protection location is used for when operating temperature is more than threshold value, start-up temperature protection mechanism.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, temperature protection list Member stops working specifically for controlling motor in preset duration since the second moment.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, temperature protection list Member is also used to after preset duration, and control motor is resumed work.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, preset duration is 20-30 seconds.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, electronic equipment is also Including driving unit, work for driving motor；Driving unit includes: power supply unit, transistor and current sense resistor；Its In, the input terminal of power supply unit and motor connects, and the output end of motor and the first end of transistor connect, the second end of transistor It is connect with the first end of current sense resistor, the second end ground connection of current sense resistor；Determination unit is specifically used for: according to defeated Voltage V out₁The operating current that the first moment motor is determined with the resistance value of current sense resistor, according to the input voltage V of motor₂With Output voltage V₁The operating voltage for determining the first moment motor, according to the operating current of the first moment motor and the first moment motor Operating voltage, determine the operating resistance of the first moment motor；According to output voltage V₁' determining with the resistance value of current sense resistor The operating current of second moment motor, according to the input voltage V of motor₂' and output voltage V₁' determine the work of the second moment motor Make voltage, according to the operating voltage of the operating current of the second moment motor and the second moment motor, determines the second moment motor Operating resistance.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, output voltage V₁ It is the voltage or output voltage V of the output end of the first moment motor₁It is the electricity of the first end of the first moment current sense resistor Pressure；Output voltage V₁' be the second moment motor output end voltage or output voltage V₁' it is the second moment current sense resistor First end voltage.

In conjunction with the third aspect and above-mentioned possible implementation, in alternatively possible implementation, determination unit, tool Body is used for: according to the operating resistance of the first moment motor, the operating resistance of the second moment motor, environment temperature and motor around The thermal sensitive resin of group, determines the temperature rise of the operating temperature of motor；According to temperature rise and environment temperature, the work of the second moment motor is determined Make temperature.

Fourth aspect, the embodiment of the present application provide a kind of over-temperature protection device, and over-temperature protection device is for electronic equipment The overheat protector of elevating mechanism, elevating mechanism include motor, and the retractable supports portion being connected to motor, energy when motor works Enough drive retractable supports portion flexible；Over-temperature protection device includes: acquiring unit and temperature protection unit；Wherein, acquiring unit, Retractable supports portion is driven to stretch from the 1st time to the m times the first flexible duration for obtaining motor；Temperature protection unit is used In when the first duration is less than the first preset duration, start-up temperature protection mechanism.

In conjunction with fourth aspect and above-mentioned possible implementation, in alternatively possible implementation, temperature protection list Member stops working specifically for controlling motor in the second preset duration since current time.

In conjunction with fourth aspect and above-mentioned possible implementation, in alternatively possible implementation, temperature protection list Member is also used to, and after the second preset duration, control motor is resumed work.

In conjunction with fourth aspect and above-mentioned possible implementation, in alternatively possible implementation, acquiring unit, also For obtaining the environment temperature of electronic equipment；According to environment temperature and mapping relations, the first preset duration, mapping relations packet are obtained Include the corresponding relationship of environment temperature Yu the first preset duration.

In conjunction with fourth aspect and above-mentioned possible implementation, in alternatively possible implementation, m is 10 times, is reflected The relationship of penetrating includes at least one following corresponding relationship: environment temperature is 45 DEG C, and the first preset duration is 30 seconds；Environment temperature is greater than 45 DEG C and be less than or equal to 55 DEG C, the first preset duration is 30 seconds.

Work as environment temperature in alternatively possible implementation in conjunction with fourth aspect and above-mentioned possible implementation It is 45 DEG C, the second preset duration is 20 seconds；When environment temperature is greater than 45 DEG C and is less than or equal to 55 DEG C, the second preset duration is 30 seconds.

In conjunction with fourth aspect and above-mentioned possible implementation, in alternatively possible implementation, this method is also wrapped Include: when the first duration is greater than the first preset duration, over-temperature protection device obtains motor and retractable supports portion is driven to stretch from the 2nd time It is reduced to the m+1 times the second flexible duration；When the second duration is less than the first preset duration, over-temperature protection device start-up temperature is protected Protection mechanism.

5th aspect, the embodiment of the present application provide a kind of electronic equipment, which includes: as any in the third aspect Over-temperature protection device described in and/or the over-temperature protection device as described in any one of fourth aspect；And elevating mechanism and Driving unit, the elevating mechanism include motor, and the retractable supports portion connecting with the motor, and the driving unit is used In driving the motor work, the motor is able to drive the retractable supports portion when working flexible；The overheat protector dress Set the overheat protector for the elevating mechanism.

6th aspect, the embodiment of the present application provide a kind of electronic equipment, which may include processor, for Memory is connected, and calls the program stored in memory, to execute the possible implementation such as first aspect or first aspect In any excess temperature protection method, alternatively, executing as any in the possible implementation of second aspect or second aspect The excess temperature protection method.

7th aspect, the embodiment of the present application provide a kind of computer readable storage medium, comprising: computer software instructions； When computer software instructions are run in over-temperature protection device, so that over-temperature protection device executes such as first aspect or first party Any excess temperature protection method in the possible implementation in face, alternatively, execute such as second aspect or second aspect can Any excess temperature protection method in the implementation of energy.

Eighth aspect, the embodiment of the present application provide a kind of computer program product, when computer program product is in computer When upper operation, so that computer executes the excess temperature as described in any in the possible implementation of first aspect or first aspect and protects Maintaining method, alternatively, executing the excess temperature protection method as described in any in the possible implementation of second aspect or second aspect.

It is to be appreciated that over-temperature protection device described in the third aspect and fourth aspect of above-mentioned offer, above-mentioned offer 5th aspect and the 6th aspect described in electronic equipment, above-mentioned offer the 7th aspect described in computer readable storage medium, And computer program product described in eighth aspect is used to execute corresponding method presented above, and therefore, institute's energy The beneficial effect reached can refer to the beneficial effect in corresponding method presented above, and details are not described herein again.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application；

Fig. 2 is a kind of structural schematic diagram of excess temperature protection method provided by the embodiments of the present application；

Fig. 3 is a kind of flow diagram of excess temperature protection method provided by the embodiments of the present application；

Fig. 4 is the flow diagram of another excess temperature protection method provided by the embodiments of the present application；

Fig. 5 is the flow diagram of another excess temperature protection method provided by the embodiments of the present application；

Fig. 6 is the composition schematic diagram of another over-temperature protection device provided by the embodiments of the present application；

Fig. 7 is the composition schematic diagram of another over-temperature protection device provided by the embodiments of the present application.

Specific embodiment

With large-size screen monitors accounting popularizing in the electronic device, lifting technology is introduced in the design of electronic equipment.But it rises The motor of descending mechanism can generate the risk of excess temperature work in frequent operation.If according to the thermistor being arranged near motor The peripheral temperature of detection realizes temperature protection to motor, can be may cause due to the inaccurate estimation to motor temperature in motor Temperature control measures false triggering within the scope of normal working temperature, it is also possible to caused by causing motor to work under excess temperature environment for a long time Motor damage.

To solve the above-mentioned problems, the embodiment of the present application provides a kind of excess temperature protection method, and this method can be applied to electricity In the overheat protector of the elevating mechanism of sub- equipment.It is carried out by the temperature of the motor of the motor work front and back to elevating mechanism itself Real-time monitoring, and overheat protector is carried out accordingly, temperature control accuracy is improved, and then reduce false triggering, while can avoid motor in mistake The damage of motor caused by working under warm environment.

Illustratively, the electronic equipment in the embodiment of the present application can be mobile phone, tablet computer, desktop type, on knee, hand Hold computer, laptop, Ultra-Mobile PC (ultra-mobile personal computer, UMPC), Net book and cellular phone, personal digital assistant (personal digital assistant, PDA), augmented reality (augmented reality, AR) virtual reality (virtual reality, VR) equipment, media player etc. there is lifting The equipment of mechanism, the embodiment of the present application are not particularly limited the specific form of the equipment.

It is described in detail below in conjunction with embodiment of the attached drawing to the embodiment of the present application.

Referring to FIG. 1, being the structural schematic diagram of a kind of electronic equipment provided by the embodiments of the present application.As shown in Figure 1, the electricity Sub- equipment includes at least one processor 101, communication line 102, motor 103 and functional module 104；Further, Fig. 1 institute Show that electronic equipment can also include at least one transceiver 105, memory 106.Wherein, processor 101, motor 103, function mould Block 104 can be connected between transceiver 105 and memory 106 by communication line 102.In the embodiment of the present application, at least One can be one, two, three or more, the embodiment of the present application is with no restrictions.

In the embodiment of the present application, processor 101 can be central processing unit (central processing unit, CPU), general processor network processing unit (network processor, NP), digital signal processor (digital signal Processing, DSP), microprocessor, microcontroller, programmable logic device (programmable logic device, ) or their any combination PLD.Processor can also be other any devices with processing function, for example, circuit, device or Software module.

In the embodiment of the present application, communication line 102 may include access, for passing between the component that electronic equipment includes It delivers letters breath.

In the embodiment of the present application, motor 103 at work, can drive the retractable supports portion of electronic equipment flexible, with Functional module 104 is driven to go up and down.For example, the functional module 104 can be the camera of electronic equipment.

In the embodiment of the present application, transceiver 105 be used for other equipment or communication network (such as Ethernet, RAN, wirelessly Local area network (wireless local area networks, WLAN) etc.) communication.Transceiver 105 can be module, circuit, receipts Send out device or any device that can be realized communication.

In the embodiment of the present application, memory 106 can be read-only memory (read-only memory, ROM) or can The other kinds of static storage device for storing static information and/or instruction, is also possible to random access memory (random Access memory, RAM) or the other kinds of dynamic memory of information and/or instruction can be stored, it can also be electricity Erasable programmable read-only memory (electrically erasable programmable read-only memory, EEPROM), CD-ROM (compact disc read-only memory, CD-ROM) or other optical disc storages, optical disc storage (including compression optical disc, laser disc, optical disc, Digital Versatile Disc, Blu-ray Disc etc.), magnetic disk storage medium or other magnetic storages Equipment or can be used in carry or store have instruction or data structure form desired program code and can be by calculating Any other medium of machine access, but not limited to this.

In a kind of possible design, memory 106 can exist independently of processor 101, i.e., memory 106 can be place The memory outside device 101 is managed, at this point, memory 106 can be connected by communication line 102 with processor 101, for depositing Storage instruction or program code.It, can when processor 101 calls and executes the instruction stored in memory 106 or program code Realize the method that the following embodiments of the application provide.In another possible design, memory 106 can also be with processor 101 It integrating, i.e., memory 106 can be the internal storage of processor 101, for example, the memory 106 is cache, It can be used for keeping in some data and/or command information etc..

As a kind of achievable mode, processor 101 may include one or more CPU, the CPU0 of example as shown in figure 1 and CPU1.As the achievable mode of another kind, electronic equipment may include multiple processors, example processor 101 as shown in figure 1 and place Manage device 107.

Device structure shown in Fig. 1 does not constitute the restriction to electronic equipment, may include more more or less than illustrating Component, perhaps combine certain components or different component layouts.Although being not shown, electronic equipment can also include battery, Bluetooth module, global positioning system (Global Position System, GPS) module, display screen etc., details are not described herein.

Method in following embodiment can be realized in the electronic equipment with above-mentioned hardware configuration.

In the embodiment of the present application, it is estimated by the temperature of the motor to elevating mechanism itself, it is electric compared to utilizing The temperature that the thermistor of machine periphery setting is estimated is more accurate.In this way, overheat protector is carried out to motor on this basis, Temperature control measures false triggering and motor within the scope of avoidable motor normal working temperature work under over-temperature conditions for a long time draws The problem of motor damage risen.

It is understood that the elevating mechanism of electronic equipment may include motor, which is able to drive liter at work The retractable supports portion of descending mechanism is flexible, to drive the functional module being arranged in retractable supports portion, such as front camera Lifting.In addition, above-mentioned motor can be driven to work by the driving unit of electronic equipment.Below in conjunction with Fig. 2, driving unit drive is introduced The principle of dynamic motor work.

Wherein, as shown in Fig. 2, driving unit 201 may include power supply unit 202, transistor 203 and current sense resistor 204.The output end of power supply unit 202 is connect with 205 input terminal 205a of motor, the output end 205b and transistor 203 of motor 205 First end 203a connection, the second end 203b of transistor 203 connect with the first end 204a of current sense resistor 204, electric current The second end 204b of detection resistance 204 is grounded.

Based on above-mentioned connection, power supply unit 202 can power for motor 205, and transistor 203 and current sense resistor 204 pairs of passage currents are adjusted, with the normal work of driving motor 205.When motor 205 works, elevating mechanism can be driven Middle retractable supports portion is flexible.

It should be noted that transistor 203 and current sense resistor 204 can be 201 Central Plains of electronic equipment driving unit Some devices are also possible to the device newly increased for the embodiment of the present application.Thermistor 207 can be original in electronic equipment Device is also possible to the device that the embodiment of the present application newly increases.Motor 205 can be stepper motor, or other types Motor.The embodiment of the present application herein and is not particularly limited.

In addition, above-mentioned electronic equipment may also include temperature protective device 206 and thermistor 207.As shown in Fig. 2, temperature The first end 206a of protective device 206 can be connect with the first end 207a of thermistor 207, the second end of thermistor 207 207b ground connection.The second end 206b of temperature protective device 206 can be connect with driving unit 201.It is realized with this to motor 205 Temperature protection, such as temperature protective device 206 control driving unit 201 and stop being that motor 205 is powered.

In the embodiment of the present application, above-mentioned temperature protective device 206 can be processor (such as above-mentioned processing of electronic equipment Device 101), the power management chip (Power Management Unit, PMU) of electronic equipment, the system on chip of electronic equipment Hardware modules such as (System on Chip, SOC), are also possible to software unit, and the present embodiment herein and is not particularly limited.

Fig. 3 and embodiment shown in Fig. 4 carry out excess temperature protection method provided by the embodiments of the present application in conjunction with Fig. 2 detailed It introduces.

Referring to FIG. 3, being a kind of flow diagram of excess temperature protection method provided by the embodiments of the present application.As shown in figure 3, This method may include:

S301, over-temperature protection device obtain the input voltage V of the first moment motor₂With output voltage V₁, obtained for the second moment The input voltage V of motor₂' and output voltage V₁'。

Wherein, in conjunction with Fig. 2, at the time of the first moment was that motor 205 does not work, when the second moment was that motor 205 works It carves, and the second moment was later than for the first moment.That is, the second moment be motor worked any one after a period of time when It carves.

S302, temperature protection device are according to the input voltage V of motor₂With output voltage V₁, determine the work of the first moment motor Resistance, according to the input voltage V of motor₂' and output voltage V₁', determine the operating resistance of the second moment motor.

In the present embodiment, the operating resistance of motor can refer to the resistance value of the winding of motor.

S303, over-temperature protection device obtain the environment temperature of the first moment electronic equipment.

The operating resistance of S304, over-temperature protection device according to the first moment motor, the operating resistance of the second moment motor, with And environment temperature, determine the operating temperature of the second moment motor.

It is well known that in 205 course of work of motor, the temperature of motor 205 can change in conjunction with Fig. 2.And motor 205 winding can show different resistance values at different temperatures.In the present embodiment, the process that can be worked in motor 205 In real-time measurement is carried out to the input voltage and output voltage of motor 205, so that it is determined that motor 205 is after a period of operation The operating resistance at (such as the second moment).The temperature rise of motor 205 after a period of work can be determined using obtained operating resistance. At this point, using motor 205 when not yet working (such as the first moment) temperature as reference, can determine its work for a period of time Operating temperature afterwards, the i.e. operating temperature of the second moment motor 205.

Wherein, temperature of the motor 205 when not yet working is identical with environment temperature, therefore over-temperature protection device can be with Environment temperature when motor 205 does not work is obtained, i.e., the environment temperature at above-mentioned first moment is as reference.

S305, when operating temperature be more than threshold value when, over-temperature protection device start-up temperature protection mechanism.

Wherein, in conjunction with Fig. 2, motor 205 is got in over-temperature protection device 206 and has been worked after a period of time, i.e., when second After the operating temperature for carving motor 205, it can be determined that whether the operating temperature is more than threshold value, if it exceeds the threshold, then showing motor 205 have excess temperature work risks, at this point, over-temperature protection device 206 can start-up temperature protection mechanism, to carry out temperature to motor 205 Degree protection.

Excess temperature protection method provided by the embodiments of the present application, input voltage and output by measurement motor in different moments Voltage to obtain motor in the operating resistance of different moments, and then estimates the operating temperature of motor after a period of operation, The motor operating temperature of this method estimation, compared to the temperature using the motor estimated in the thermistor that motor periphery is arranged It spends more accurate.In this way, carrying out overheat protector, the touching of control temperature protection mechanism that can be more accurate to motor on this basis Hair, also reduces the false triggering probability of temperature protection mechanism while effectively protecting motor.

Referring to FIG. 4, for the flow diagram of another excess temperature protection method provided by the embodiments of the present application.Such as Fig. 4 institute Show, this method may include:

S401, over-temperature protection device obtain the input voltage V of the first moment motor₂With output voltage V₁, obtained for the second moment The input voltage V of motor₂' and output voltage V₁'。

Illustratively, in conjunction with Fig. 2, over-temperature protection device 206 can be carried out by input terminal to motor 205 and output end Digital-to-analogue conversion (Analog-to-Digital Converter, ADC) samples to obtain input terminal voltage and the output of motor 205 Hold voltage.It as shown in Figure 2, can be from the isopotential point P of the input terminal 205a of motor 205₂ADC2 is drawn to over-temperature protection device 206, over-temperature protection device 206 can obtain the voltage of the input terminal of motor 205 by ADC2.For example, over-temperature protection device 206 It can sample to obtain the input voltage V of motor 205 by ADC2 at the first moment₂.Motor 205 after a period of work, such as Second moment sampled to obtain input voltage V by ADC2₂'.Since the resistance value of transistor 203 during the work time is very small, one As for 0.4 Ω or so, and the operating resistance of motor 205 is greater than 10 Ω and therefore in the motor course of work, can approximately recognize For P₁The voltage of the ADC1 acquisition of point is equal to the output voltage of 205 output end 205b of motor, that is to say, that over-temperature protection device 206 can obtain the voltage of the output end of motor 205 by ADC1.It is exported for example, being sampled at the first moment by ADC1 Voltage V₁, sample to obtain output voltage V by ADC1 at the second moment₁'。

Optionally, since the resistance value of transistor 203 is much smaller than the operating resistance of motor 205, it is believed that transistor 203 Partial pressure does not change, value V with the variation of environment temperature_ds.So, the output voltage of the first moment motor 205 can be by ADC1 subtracts the partial pressure V of transistor 203 in the voltage that the first instance sample obtains_dsIt obtains, the output electricity of the second moment motor 205 Pressure can be subtracted the partial pressure V of transistor 203 by ADC1 in the voltage that the second instance sample obtains_dsIt obtains.

Optionally, the P on the output end 205b of motor 205₃ADC3 sampling is carried out, the output voltage of motor 205 is obtained. For example, over-temperature protection device 206 can sample to obtain the output voltage at 205 first moment of motor by ADC3 at the first moment V₃, over-temperature protection device 206 can sample to obtain the output voltage V at 205 second moment of motor by ADC3 at the second moment₃'。

It should be noted that the method for sampling in the embodiment of the present application, can be obtained by increasing the sampling of above-mentioned ADC3 The output voltage of more accurate motor 205, but since the sample of ADC1 is in the first end 204a of current sense resistor 204 Near, during the work time, since the resistance variations of current sense resistor 204 are small, the sampled voltage of ADC1 is more stable, can be with For calculating the operating current of the motor in following steps.Therefore, the introducing of ADC3 can increase the sampling of 205 output voltage of motor Accuracy, but cannot replace ADC1 sampling process.

S402, over-temperature protection device are according to the input voltage V of motor₂With output voltage V₁, determine the work of the first moment motor Make resistance, according to the input voltage V of motor₂' and output voltage V₁', determine the operating resistance of the second moment motor.

In order to obtain the operating resistance of motor 205, partial pressure and the current detecting electricity by current sense resistor 204 are needed The resistance value of resistance 204 obtains the electric current of the motor 205 in 205 course of work of motor.Therefore, P can be acquired by ADC1₁The electricity of point Pressure obtains the output voltage of motor 205 and the voltage of current sense resistor 204.

It is well known that the operating resistance of motor 205 can utilize Ohm's law, according to the work of motor 205 in conjunction with Fig. 2 Electric current on voltage and motor 205 obtains.

Wherein, the operating voltage of motor 205 can be obtained according to the input voltage and output voltage of motor 205.For example, first The operating voltage of the motor 205 at moment can be V₂-V₁, the operating voltage of the motor 205 at the second moment can be V₂'-V₁'。

With reference to Fig. 2 it is found that motor 205 is connected with transistor 203 and current sense resistor 204, therefore on motor 205 Electric current is identical as the electric current on current sense resistor 204.The electric current of current sense resistor 204 can use Ohm's law and obtain. For example, the voltage of the first moment current sense resistor 204 is V₁, then according to formulaIt can determine that the first moment electricity Flow the electric current in detection resistance 204.Similarly, according to formulaIt can determine the second moment current sense resistor 204 On electric current.Wherein, R_senseFor the resistance value of current sense resistor 204.

It should be noted that the resistance value R of current sense resistor 204 under normal conditions_senseLess than 1 Ω, therefore with environment The variation of temperature, it is believed that its resistance value remains unchanged.

To sum up, the operating resistance of the first moment motor 205 can be determined according to following formula (1).

Wherein, R₁For the operating temperature of the first moment motor 205, V₂For the input voltage of the first moment motor 205, V₁For The output voltage of first moment motor 205, R_senseThe resistance value of current sense resistor 204.

Similarly, the operating resistance of the second moment motor 205 can be determined according to following formula (2).

Wherein, R₁' be the second moment motor 205 operating temperature, V₂' be the second moment motor 205 input voltage, V₁' For the output voltage of the second moment motor 205, R_senseThe resistance value of current sense resistor 204.

S403, over-temperature protection device obtain the environment temperature of the first moment electronic equipment.

Wherein, over-temperature protection device 206 can thermistor 207 as shown in Figure 2 obtain the first moment electronic equipment Environment temperature.

The operating resistance of S404, over-temperature protection device according to the first moment motor, the operating resistance of the second moment motor, ring The thermal sensitive resin of the winding of border temperature and motor, determines the temperature rise of the operating temperature of motor.

S405, over-temperature protection device determine the second moment motor according to the temperature rise and environment temperature of the operating temperature of motor Operating temperature.

Wherein, 205 temperature of motor when the operating temperature of the second moment motor 205 can not work according to motor 205 with The sum of the temperature rise of operating temperature of motor 205 obtains.And when motor 205 does not work, 205 temperature of motor and environment temperature phase Together, therefore have, t₀=t₁+ Δ t, wherein t₀For the operating temperature of motor 205 after a period of work, t₁When not working for motor 205 Environment temperature, Δ t be 205 operating temperature of motor temperature rise.According to the winding of winding electric machine disclosed in GB 4706.1-2005 The temperature rise of temperature rise calculation method, the operating temperature of motor 205 can be determined by following formula (3).

Wherein, Δ t is the temperature rise of the operating temperature of motor 205, R₁The resistance value of winding when not working for motor 205, R₂For The resistance value of the winding of motor 205 after a period of work, k are the thermal sensitive resin of the winding of motor, t₁When not working for motor 205 Environment temperature, t₂For the environment temperature of motor 205 after a period of work.

In the embodiment of the present application, since each run duration of motor 205 is very short, the variation of room temperature can be ignored Disregard, that is to say, that t₁=t₂.Therefore, the temperature rise of the operating temperature of motor 205 can simplify determines for following formula (4).

Aggregative formula (1) (2) (4), operating temperature of the motor 205 at the second moment can be determined by following formula (5).

Wherein, t₀Operating temperature for motor 205 at the second moment, V₁For the output voltage of the first moment motor 205, V₁' For the output voltage of the second moment motor 205, V₂For the input voltage of the motor 205 at the first moment, V₂' be the second moment electricity The input voltage of machine 205, R_senseFor the resistance value of current sense resistor, k is the thermal sensitive resin of the winding of motor 205, t₁It is first The environment temperature at moment.

It should be understood that by operating temperature of formula (5) the available motor 205 at the second moment, calculation method Related to the thermal sensitive resin of the winding of motor 205, the thermal sensitive resin of the winding of unlike material is different.Such as the thermal sensitive resin of copper winding It is 234.5, the thermal sensitive resin of aluminium winding is 225.The embodiment of the present application uses the winding of which kind of material not herein for motor 205 It is required that.

S406, over-temperature protection device judge whether motor in the operating temperature at the second moment is more than threshold value.

If the operating temperature of the second moment motor 205 is more than threshold value, S407-S408 is executed.

If the operating temperature of the second moment motor 205 is not above threshold value, motor 205 works on.

Optionally, if the operating temperature of the second moment motor 205 is not above threshold value, temperature protection device 206 can be true The operating temperature of fixed second moment motor 205 and the difference of threshold value, execute S401-S406 after safe duration.Wherein, safe duration It can be determined by over-temperature protection device 206 according to the operating temperature of the second moment motor 205 and the difference of threshold value.

Wherein, which can be predefined, as configured when leaving the factory, can also be user configuration, the application Embodiment is not limited herein.

Optionally, threshold value can be lower than the corresponding operating temperature upper limit of winding material of motor 205, enough to reserve The temperature rising space, preventing 205 temperature of motor caused by the temperature fluctuation within the scope of systematic error is more than the operating temperature upper limit.

S407, over-temperature protection device control motor in preset duration since the second moment and stop working.

When the second moment motor 205 operating temperature be more than threshold value, then show motor 205 have excess temperature work risk, this When, over-temperature protection device 206 can start-up temperature protection mechanism, with to motor 205 carry out temperature protection.In some embodiments, Over-temperature protection device 206 can control motor 205 since the second moment in preset duration and stop working.For example, excess temperature is protected Protection unit 206 controls motor 205 and stops working, the specific can be that, in the preset duration of triggering overheat protector mechanism, excess temperature Protective device 206 controls driving unit 201 and stops powering to motor 205.Also, in the preset duration, even if receiving use The operation for being used to indicate elevating mechanism work of family input, driving unit 201 will not power to motor 205, until when default Length terminates.

Optionally, triggering in the preset duration after overheat protector mechanism, when receive user input be used to indicate lifting When the operation of mechanism work, electronic equipment can display screen on display reminding information, the prompt information is for informing user The overheat of motor 205 is in guard mode.Above-mentioned prompt information can be bullet frame, be also possible to preset vibration information, this Shen Please embodiment here without limitation.

After preset duration, control motor is resumed work for S408, over-temperature protection device.

In some embodiments, over-temperature protection device 206 controls motor 205 and resumes work, the specific can be that, default After duration, over-temperature protection device 206 controls driving unit 201 and restores to power to motor 205.

Illustratively, at the A moment, the operating temperature of motor 205 reaches pre-set threshold value, over-temperature protection device 206 Start overheat protector mechanism.Preset duration is B, and within the A moment to A+B moment, over-temperature protection device 206 controls driving unit 201 stop powering to motor 205.Since the A+B moment, over-temperature protection device 206 controls driving unit 201 and restores to motor 205 power supplies.

Optionally, preset duration can be 20-30 seconds.For example, preset duration can be 20 seconds.

It should be noted that after the control motor 205 of over-temperature protection device 206 is resumed work, if detected again The operation for being used to indicate elevating mechanism work of user's input, can re-execute S401-S408.

Excess temperature protection method provided by the embodiments of the present application, is sampled by ADC, obtains motor in the input of different moments Voltage and output voltage, to obtain motor in the operating resistance of different moments, according to the operating resistance and environment of different moments Temperature, it may be determined that the temperature rise of the operating temperature of motor after a period of operation, to obtain motor in work a period of time Operating temperature afterwards realizes the real time monitoring to motor operating temperature, carries out overheat protector to motor on this basis, more It is accurately controlled the triggering of temperature protection mechanism, the mistake touching of temperature protection mechanism is also reduced while effectively protecting motor Send out probability.

Fig. 5 is the flow diagram of another excess temperature protection method provided by the embodiments of the present application.This method can be applied In the overheat protector of the elevating mechanism of electronic equipment.Such as the electronic equipment that can be applied to that there is structure shown in Fig. 2.Such as Fig. 5 Shown, this method may include:

S501, over-temperature protection device obtain motor and retractable supports portion are driven to be stretched from the 1st time to the m times flexible first Duration.

Wherein, flexible it can be after control motor after starting overheat protector mechanism is resumed work the 1st time and receive user for the 1st time Motor drives the 1st task in retractable supports portion when the operation for being used to indicate elevating mechanism work of input, is also possible to electricity Motor drives retractable supports portion when receiving the operation for being used to indicate elevating mechanism work of user's input after sub- equipment factory 1st task, can also be apart from the motor last time work after be more than safe duration after receive user input be used to indicate liter Motor drives the 1st task in retractable supports portion when the operation of descending mechanism work.The application is here with no restrictions.

S502, over-temperature protection device obtain the environment temperature of electronic equipment.

Wherein, with reference to Fig. 2, environment temperature can be obtained by thermistor 207.

S503, according to mapping relations, over-temperature protection device obtain it is corresponding with the environment temperature in S502 first it is default when It is long.

Mapping relations can be predefined, if electronic equipment configures when leaving the factory, can also be user configuration.

Illustratively, above-mentioned mapping relations can obtain in the following way: under different environment temperatures, with motor 205 circulations of work 10 are representative value, i.e. m=10, controlling 205 working time of motor respectively is 45-60 seconds, are surveyed using thermocouple instrument Coil exospheric temperature is measured, to obtain varying environment temperature, continuous work 10 times within the different operating time of motor 205, motor 205 Operating temperature three between corresponding relationship.According to the operating temperature upper limit of obtained corresponding relationship and motor 205 Obtain above-mentioned mapping relations.

For example, by taking motor 205 is using copper winding as an example, the operating temperature upper limit is 155 DEG C, general line in the present embodiment It encloses surface temperature and coil internal layer temperature difference is no more than 10 DEG C, therefore, coil skin temperature needs to start excess temperature when being 145 DEG C Protection mechanism.For example, table 1 provides some experimental data obtained using aforesaid way.

Table 1

It works 10 and recycles at a temperature of varying environment	Coil skin temperature
		55 DEG C of environment temperatures, it is 60 seconds time-consuming	142.8℃
45 DEG C of environment temperatures, it is 50 seconds time-consuming	144.6℃
		40 DEG C of environment temperatures, it is 45 seconds time-consuming	144.7℃
……	……

It can be seen that when environment temperature is 45 DEG C, if the work of motor 205 10 times time is 50 seconds, motor 205 Operating temperature is already close to 145 DEG C of the operating temperature upper limit.It should be understood that compared to higher environment temperature, in lower ring At a temperature of border, after the same number that works in the same time, the operating temperature of motor 205 can be lower than at higher ambient temperatures Operating temperature after work.That is, motor 205 works 10 times and recycles in 50 seconds, motor when environment temperature is lower than 45 DEG C 205 operating temperature can be lower than 144.6 DEG C, will not occur excess temperature phenomenon.

Therefore, when environment temperature is lower than 45 DEG C, 205 continuous work of motor 10 times, when the time used was less than 50 seconds, electricity Machine 205 has excess temperature risk, needs to start overheat protector mechanism.That is, environment temperature be lower than 45 DEG C when, first it is default when Long experiment value is 50 seconds.

Likewise, data, also can be obtained other environment temperatures through a large number of experiments according to the above method, such as 45-55 DEG C With the corresponding relationship of the experiment value of the first preset duration.Such as: when environment temperature is 45-55 DEG C, the experiment of the first preset duration Value is 60 seconds.

It should be noted that will can directly test the experiment value of resulting varying environment temperature and the first preset duration Corresponding relationship is as above-mentioned mapping relations.Certainly, due to data acquisition systematic error, can also to it is obtained by the above method not Appropriate adjustment is carried out with the corresponding relationship of environment temperature and the first preset duration, it is such as rule of thumb default to environment temperature or first The experiment value of duration carries out appropriate adjustment, preferably to meet the case where actual use.And varying environment temperature corresponding first Preset duration may be the same or different.For example, can be set above-mentioned first preset duration in the embodiment of the present application Less than a value of experiment value, the specific can be that, when environment temperature is lower than 45 DEG C, the first preset duration is 30 seconds；Environment temperature When degree is 45-55 DEG C, the first preset duration is 30 seconds.

S504, over-temperature protection device judge the size relation of the first duration obtained in S501 Yu the first preset duration.

When the first duration is less than the first preset duration, over-temperature protection device 206 can execute S505-S506.

When the first duration is greater than the first preset duration, show that motor 205 may continue to work, in order to protect motor 205 Do not occur the case where excess temperature in subsequent work, over-temperature protection device 206 obtains motor 205 and drives retractable supports portion from the 2 the second durations stretched to the m+1 times of stretching.When the second duration is less than the first preset duration, over-temperature protection device starting Temperature protection mechanism.It should be understood that over-temperature protection device 206 can continue to obtain when not needing to open overheat protector mechanism Motor 205 drives retractable supports portion to stretch from the 3rd time to the m+2 times flexible duration, and judges whether to need to open excess temperature guarantor Protection mechanism, and so on, when needing to open overheat protector mechanism, over-temperature protection device 206 can execute S505-S506, Or no longer receive the operation for being used to indicate elevating mechanism work of user's input.

Pass through the comparison in S501-S504, to the duration and the first preset duration of motor m task, it is ensured that when motor work Overheat protector mechanism is accurately triggered when making excessively frequent.

S505, since current time, over-temperature protection device control motor stops working.

Wherein, when the first duration is less than the first preset duration, the expression working frequency in t duration of motor 205 is too fast, work The risk of the 205 operating temperature upper limit of motor is had more than as temperature.Over-temperature protection device 206 starts overheat protector mechanism at this time.Such as, Control motor 205 stops working.

In some embodiments, over-temperature protection device 206 controls motor 205 and stops working, the specific can be that, it is triggering In second preset duration of overheat protector mechanism, over-temperature protection device 206, which controls driving unit 201, to be stopped powering to motor 205. In the second preset duration, even if receiving the operation for being used to indicate elevating mechanism work of user's input, driving unit 201 It does not respond, until the second preset duration terminates.

Optionally, triggering in the second preset duration after overheat protector mechanism, when receive user's input for referring to When showing the operation of elevating mechanism work, electronic equipment can display screen on display reminding information, the prompt information is for accusing Know that the overheat of user's motor 205 is in guard mode.Above-mentioned prompt information can be bullet frame, be also possible to preset vibration letter Breath, the embodiment of the present application is here without limitation.

S506, after control motor stops working the second preset duration, over-temperature protection device control motor is resumed work.

Wherein, preset duration can be predefined, if electronic equipment configures when leaving the factory, can also be user configuration 's.

In some embodiments, over-temperature protection device 206 controls motor 205 and resumes work, the specific can be that, second After preset duration, over-temperature protection device 206 controls driving unit 201 and restores to power to motor 205.

It should be noted that after the control motor 205 of over-temperature protection device 206 is resumed work, if detected again The operation for being used to indicate elevating mechanism work of user's input, can re-execute S501-S506.

In addition, above-mentioned example is to be fixed using fixed number of times as representative value by the work of motor 205 at a temperature of varying environment The relationship of time of number and coil skin temperature illustrates how mapping relations obtain.But the embodiment of the present application not office It is limited to this.For example, it is also possible to which the fixed cycles time as representative value, such as 45 seconds, obtains motor in the set time in S501 Working cycles number, and in S503, according to the relationship of cycle-index at a temperature of varying environment and coil skin temperature, generation is reflected Relationship is penetrated, obtains the corresponding preset times of environment temperature, the rear working cycles for comparing motor in the set time according to mapping relations The relationship of number and preset times come determine the need for triggering overheat protector mechanism.

In the embodiment of the present application, according to environment temperature difference, the second different preset durations can be set, for guaranteeing After second preset duration, the temperature of the winding of motor 205 can descend to the level that can continue to work normally.Illustratively, Within 45 DEG C of environment temperature, the first preset duration be can be 30 seconds, and the second preset duration can be 20 seconds；Environment temperature 45-55 DEG C, the first preset duration can be 30 seconds, and the second preset duration can be 30 seconds.

Excess temperature protection method provided by the embodiments of the present application, the motor that over-temperature protection device passes through under corresponding environment temperature connect The time of continuous work fixed number of times judges that motor whether there is the risk of overheat, and takes overheat protector measure, hard not increasing The overheat protector to motor in elevating mechanism is realized on the basis of part design, judges motor temperature compared to by thermistor Scheme more accurate and effective.

It is above-mentioned that mainly scheme provided by the embodiments of the present application is described from the angle of over-temperature protection device.It can manage Solution, in order to realize the above functions, it comprises execute the corresponding hardware configuration of each function and/or soft for over-temperature protection device Part module.Those skilled in the art should be readily appreciated that, described in conjunction with the examples disclosed in the embodiments of the present disclosure Algorithm steps, the application can be realized with the combining form of hardware or hardware and computer software.Some function is actually with hard Part or computer software drive the mode of hardware to execute, the specific application and design constraint depending on technical solution. Professional technician can use different methods to achieve the described function each specific application, but this realization It is not considered that exceeding scope of the present application.

The embodiment of the present application can carry out the division of functional module, example according to above method example to over-temperature protection device Such as, each functional module of each function division can be corresponded to, two or more functions can also be integrated at one It manages in module.Above-mentioned integrated module both can take the form of hardware realization, can also use the form of software function module It realizes.It should be noted that being schematical, only a kind of logic function stroke to the division of module in the embodiment of the present application Point, there may be another division manner in actual implementation.

In the case where each function division of use correspondence each functional module, Fig. 6 is shown involved in above-described embodiment Over-temperature protection device a kind of possible composition schematic diagram, as shown in fig. 6, the over-temperature protection device includes: acquiring unit 601, determination unit 602 and temperature protection unit 603.

Wherein, acquiring unit 601, for obtaining the input voltage V of the first moment motor₂With output voltage V₁, obtain second The input voltage V of moment motor₂' and output voltage V₁', at the time of the first moment was that motor does not work, the second moment was motor work At the time of work, and the second moment was later than for the first moment.Illustratively, acquiring unit 601 can be used for executing mistake shown in above-mentioned Fig. 3 The S301 of warm guard method.Acquiring unit 601 can be also used for executing the S401 of excess temperature protection method shown in above-mentioned Fig. 4.

Determination unit 602, for the input voltage V according to motor₂With output voltage V₁, determine the work of the first moment motor Make resistance, according to the input voltage V of motor₂' and output voltage V₁', determine the operating resistance of the second moment motor.Illustratively, Determination unit 602 can be used for executing the S302 of excess temperature protection method shown in above-mentioned Fig. 3.Determination unit 602 can be also used for holding The S402 of excess temperature protection method shown in the above-mentioned Fig. 4 of row.

Acquiring unit 601 is also used to obtain the environment temperature of the first moment electronic equipment.Illustratively, acquiring unit 601 It can be also used for executing the S303 of excess temperature protection method shown in above-mentioned Fig. 3.Acquiring unit 601 can be also used for executing above-mentioned Fig. 4 The S403 of shown excess temperature protection method.

Determination unit 602 is also used to the operating resistance of the operating resistance according to the first moment motor, the second moment motor, And environment temperature, determine the operating temperature of the second moment motor.Illustratively, determination unit 602 can be also used in execution State the S304 of excess temperature protection method shown in Fig. 3.Determination unit 602 can be also used for executing excess temperature protection method shown in above-mentioned Fig. 4 S404, S405.

Temperature protection unit 603 is used for when operating temperature is more than threshold value, start-up temperature protection mechanism.Illustratively, warm Degree protection location 603 can be used for executing the S305 of excess temperature protection method shown in above-mentioned Fig. 3.Temperature protection unit 603 can be with For executing the S406-S408 of excess temperature protection method shown in above-mentioned Fig. 4.

It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence The function of functional module describes, and details are not described herein.Over-temperature protection device provided by the embodiments of the present application, for executing above-mentioned number According to processing method, therefore it can achieve effect identical with above-mentioned data processing method.

In the case where each function division of use correspondence each functional module, Fig. 7 shows another in above-described embodiment A kind of possible composition schematic diagram, as shown in fig. 7, the over-temperature protection device may include: acquiring unit 701, temperature protection list Member 702.

Wherein, acquiring unit 701 drive retractable supports portion to stretch from the 1st time for obtaining motor and stretch to the m time First duration.For example, acquiring unit 701 can be used for executing the S501 of excess temperature protection method shown in above-mentioned Fig. 5.

Acquiring unit 701 is also used to obtain the environment temperature of electronic equipment, according to environment temperature and mapping relations, obtains First preset duration, mapping relations include the corresponding relationship of environment temperature Yu the first preset duration.For example, acquiring unit 701 is also It can be used for executing S502, S503 of excess temperature protection method shown in above-mentioned Fig. 5.

Temperature protection unit 702 is used for the start-up temperature protection mechanism when the first duration is less than the first preset duration.Example Such as, temperature protection unit 702 can be used for executing the S504-S506 of excess temperature protection method shown in above-mentioned Fig. 5.

It should be noted that all related contents for each step that above method embodiment is related to can quote correspondence The function of functional module describes, and details are not described herein.

Using integrated unit, over-temperature protection device involved in above-described embodiment it is alternatively possible Composition in may include: processing module and communication module.

Processing module is for carrying out control management to the movement of over-temperature protection device, for example, processing module was for supporting Temperature protection device executes the S301-S305 in Fig. 3, S501-S506 in the S401-S408 in Fig. 4, Fig. 5 and/or for herein Other processes of described technology.Communication module is used to support the communication of over-temperature protection device Yu other network entities, such as Communication between functional module or network entity shown in Fig. 1.Over-temperature protection device can also include memory module, be used for Store the program code and data of over-temperature protection device.

Over-temperature protection device provided by the embodiments of the present application for executing above-mentioned excess temperature protection method, therefore can achieve Effect identical with above-mentioned data processing method.

Through the above description of the embodiments, it is apparent to those skilled in the art that, for description It is convenienct and succinct, only the example of the division of the above functional modules, in practical application, can according to need and will be upper It states function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete All or part of function described above.

In several embodiments provided herein, it should be understood that disclosed device and method can pass through it Its mode is realized.For example, the apparatus embodiments described above are merely exemplary, for example, the division of module or unit, Only a kind of logical function partition, there may be another division manner in actual implementation, such as multiple units or components can be with In conjunction with or be desirably integrated into another device, or some features can be ignored or not executed.Another point, it is shown or discussed Mutual coupling, direct-coupling or communication connection can be through some interfaces, the INDIRECT COUPLING of device or unit or Communication connection can be electrical property, mechanical or other forms.

Unit may or may not be physically separated as illustrated by the separation member, shown as a unit Component can be a physical unit or multiple physical units, it can and it is in one place, or may be distributed over multiple Different places.It can select some or all of unit therein according to the actual needs to realize the mesh of this embodiment scheme 's.

It, can also be in addition, each functional unit in each embodiment of the application can integrate in one processing unit It is that each unit physically exists alone, can also be integrated in one unit with two or more units.Above-mentioned integrated list Member both can take the form of hardware realization, can also realize in the form of software functional units.

It, can if integrated unit is realized in the form of SFU software functional unit and when sold or used as an independent product To be stored in a read/write memory medium.Based on this understanding, the technical solution of the embodiment of the present application substantially or Say that all or part of the part that contributes to existing technology or the technical solution can embody in the form of software products Out, which is stored in a storage medium, including some instructions are used so that an equipment (can be monolithic Machine, chip etc.) or processor (processor) execute each embodiment method of the application all or part of the steps.And it is aforementioned Storage medium include: USB flash disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory The various media that can store program code such as (Random Access Memory, RAM), magnetic or disk.

More than, the only specific embodiment of the application, but the protection scope of the application is not limited thereto, and it is any at this Apply for the change or replacement in the technical scope disclosed, should all cover within the scope of protection of this application.Therefore, the application Protection scope should be subject to the protection scope in claims.

Claims

1. a kind of excess temperature protection method, which is characterized in that be applied to over-temperature protection device, the over-temperature protection device is used for electronics The overheat protector of the elevating mechanism of equipment, the elevating mechanism include motor, and the retractable supports connecting with the motor Portion, the motor is able to drive the retractable supports portion when working flexible；

The excess temperature protection method includes:

The over-temperature protection device obtains the input voltage V of motor described in the first moment₂With output voltage V₁, the overheat protector Device obtains the input voltage V of motor described in the second moment₂' and output voltage V₁', first moment is the non-work of the motor At the time of work, at the time of second moment is motor work, and second moment is later than first moment；

The over-temperature protection device is according to the input voltage V of the motor₂With output voltage V₁, determine described in first moment The operating resistance of motor, according to the input voltage V of the motor₂' and output voltage V₁', determine motor described in second moment Operating resistance；

The over-temperature protection device obtains the environment temperature of electronic equipment described in first moment；

Motor described in the operating resistance of over-temperature protection device motor according to first moment, second moment Operating resistance and the environment temperature determine the operating temperature of motor described in second moment；

When the operating temperature is more than threshold value, the over-temperature protection device start-up temperature protection mechanism.

2. excess temperature protection method according to claim 1, which is characterized in that the over-temperature protection device start-up temperature protection Mechanism, comprising:

The over-temperature protection device controls the motor in preset duration since second moment and stops working.

3. excess temperature protection method according to claim 2, which is characterized in that in the over-temperature protection device from described second Moment starts after stopping powering to the motor in preset duration, further includes:

The over-temperature protection device controls the motor and resumes work after the preset duration.

4. excess temperature protection method according to claim 2 or 3, which is characterized in that the preset duration is 20-30 seconds.

5. excess temperature protection method described in any one of -4 according to claim 1, which is characterized in that the electronic equipment further includes Driving unit, for driving the motor to work；The driving unit includes: power supply unit, transistor and current sense resistor； Wherein, said supply unit is connect with the input terminal of the motor, the first end of the output end of the motor and the transistor Connection, the second end of the transistor are connect with the first end of the current sense resistor, and the second of the current sense resistor End ground connection；

The over-temperature protection device is according to the input voltage V of the motor₂With output voltage V₁, determine described in first moment The operating resistance of motor, according to the input voltage V of the motor₂' and output voltage V₁', determine motor described in second moment Operating resistance, comprising:

The over-temperature protection device is according to the output voltage V₁First moment is determined with the resistance value of the current sense resistor The operating current of the motor, according to the input voltage V of the motor₂With output voltage V₁Determine electricity described in first moment The operating voltage of machine, according to the work of motor described in the operating current of motor described in first moment and first moment electricity Pressure, determines the operating resistance of motor described in first moment；

The over-temperature protection device is according to the output voltage V₁' and the resistance value of current sense resistor when determining described second The operating current for carving the motor, according to the input voltage V of the motor₂' and output voltage V₁' determine the second moment institute The operating voltage for stating motor, according to the work of motor described in the operating current of motor described in second moment and second moment Make voltage, determines the operating resistance of motor described in second moment.

6. excess temperature protection method according to claim 1 or 5, which is characterized in that

The output voltage V₁It is the voltage or the output voltage V of the output end of motor described in first moment₁It is described The voltage of the first end of first moment current sense resistor；

The output voltage V₁' be motor described in second moment output end voltage or the output voltage V₁' it is institute State the voltage of the first end of the second moment current sense resistor.

7. excess temperature protection method according to claim 1 to 6, which is characterized in that the over-temperature protection device root According to the operating resistance and the environment of motor described in the operating resistance of motor described in first moment, second moment Temperature determines the operating temperature of motor described in second moment, comprising:

Motor described in the operating resistance of over-temperature protection device motor according to first moment, second moment The thermal sensitive resin of the winding of operating resistance, the environment temperature and the motor, determines the temperature of the operating temperature of the motor It rises；

The over-temperature protection device determines the work of motor described in second moment according to the temperature rise and the environment temperature Temperature.

8. a kind of excess temperature protection method, which is characterized in that be applied to over-temperature protection device, the over-temperature protection device is used for electronics The overheat protector of the elevating mechanism of equipment, the elevating mechanism include motor, and the retractable supports connecting with the motor Portion, the motor is able to drive the retractable supports portion when working flexible；

The excess temperature protection method includes:

The over-temperature protection device obtains the motor, and to drive the retractable supports portion to stretch from the 1st time flexible to the m times First duration；

When first duration is less than the first preset duration, the over-temperature protection device start-up temperature protection mechanism.

9. excess temperature protection method according to claim 8, which is characterized in that the over-temperature protection device start-up temperature protection Mechanism, comprising:

The over-temperature protection device controls the motor in the second preset duration since current time and stops working.

10. excess temperature protection method according to claim 9, which is characterized in that the over-temperature protection device from it is current when After the control motor stops working in the second preset duration that quarter starts, further includes:

The over-temperature protection device controls the motor and resumes work after second preset duration.

11. the excess temperature protection method according to any one of claim 8-10, which is characterized in that the excess temperature protection method Further include:

The over-temperature protection device obtains the environment temperature of the electronic equipment；

The over-temperature protection device obtains first preset duration, the mapping according to the environment temperature and mapping relations Relationship includes the corresponding relationship of the environment temperature Yu first preset duration.

12. excess temperature protection method according to claim 11, which is characterized in that m is 10 times；

The mapping relations include at least one following corresponding relationship:

The environment temperature is 45 DEG C, and first preset duration is 30 seconds；

The environment temperature is greater than 45 DEG C and less than or equal to 55 DEG C, and first preset duration is 30 seconds.

13. excess temperature protection method according to claim 12, which is characterized in that

When the environment temperature is 45 DEG C, the second preset duration is 20 seconds；When the environment temperature is greater than 45 DEG C and is less than or waits When 55 DEG C, the second preset duration is 30 seconds.

14. the excess temperature protection method according to any one of claim 8-13, which is characterized in that the method also includes:

When first duration is greater than first preset duration, the over-temperature protection device is obtained described in the motor drive It is stretched from the 2nd time to the m+1 times the second flexible duration in retractable supports portion；

When second duration is less than first preset duration, the over-temperature protection device start-up temperature protection mechanism.

15. a kind of over-temperature protection device, which is characterized in that the mistake of the over-temperature protection device elevating mechanism for electronic equipment Temperature protection, the elevating mechanism includes motor, and the retractable supports portion connecting with the motor, the energy when motor works Enough drive the retractable supports portion flexible；

The over-temperature protection device includes: acquiring unit, determination unit and temperature protection unit；Wherein,

The acquiring unit, for obtaining the input voltage V of motor described in the first moment₂With output voltage V₁, obtained for the second moment The input voltage V of the motor₂' and output voltage V₁', at the time of first moment is that the motor does not work, described second At the time of moment is motor work, and second moment is later than first moment；

The determination unit, for the input voltage V according to the motor₂With output voltage V₁, determine described in first moment The operating resistance of motor, according to the input voltage V of the motor₂' and output voltage V₁', determine motor described in second moment Operating resistance；

The acquiring unit is also used to obtain the environment temperature of electronic equipment described in first moment；

The determination unit is also used to electricity described in the operating resistance of the motor according to first moment, second moment The operating resistance of machine and the environment temperature determine the operating temperature of motor described in second moment；

The temperature protection unit is used for when the operating temperature is more than threshold value, start-up temperature protection mechanism.

16. over-temperature protection device according to claim 15, which is characterized in that the temperature protection unit is specifically used for The motor is controlled in preset duration since second moment to stop working.

17. over-temperature protection device according to claim 16, which is characterized in that the temperature protection unit is also used to After the preset duration, controls the motor and resume work.

18. over-temperature protection device according to claim 16 or 17, which is characterized in that the preset duration is 20-30 seconds.

19. over-temperature protection device described in any one of 5-18 according to claim 1, which is characterized in that the electronic equipment is also Including driving unit, for driving the motor to work；The driving unit includes: power supply unit, transistor and current detecting Resistance；Wherein, said supply unit is connect with the input terminal of the motor, and the of the output end of the motor and the transistor One end connection, the second end of the transistor are connect with the first end of the current sense resistor, the current sense resistor Second end ground connection；

The determination unit, is specifically used for:

According to the output voltage V₁The work electricity of motor described in first moment is determined with the resistance value of the current sense resistor Stream, according to the input voltage V of the motor₂With output voltage V₁The operating voltage for determining motor described in first moment, according to The operating voltage of motor described in the operating current of motor described in first moment and first moment, when determining described first Carve the operating resistance of the motor；

According to the output voltage V₁' and the resistance value of the current sense resistor determine the work of motor described in second moment Electric current, according to the input voltage V of the motor₂' and output voltage V₁' determine the operating voltage of motor described in second moment, According to the operating voltage of motor described in the operating current of motor described in second moment and second moment, described is determined The operating resistance of motor described in two moment.

20. over-temperature protection device described in 5 or 19 according to claim 1, which is characterized in that

21. over-temperature protection device described in any one of 5-20 according to claim 1, which is characterized in that the determination unit, tool Body is used for:

According to the operating resistance of motor described in the operating resistance of motor described in first moment, second moment, the ring The thermal sensitive resin of the winding of border temperature and the motor, determines the temperature rise of the operating temperature of the motor；

According to the temperature rise and the environment temperature, the operating temperature of motor described in second moment is determined.

22. a kind of over-temperature protection device, which is characterized in that the mistake of the over-temperature protection device elevating mechanism for electronic equipment Temperature protection, the elevating mechanism includes motor, and the retractable supports portion connecting with the motor, the energy when motor works Enough drive the retractable supports portion flexible；

The over-temperature protection device includes: acquiring unit and temperature protection unit；Wherein,

The acquiring unit, for obtaining the motor, to drive the retractable supports portion to stretch from the 1st time flexible to the m times First duration；

The temperature protection unit is used for the start-up temperature protection mechanism when first duration is less than the first preset duration.

23. over-temperature protection device according to claim 22, which is characterized in that the temperature protection unit is specifically used for The motor is controlled in the second preset duration since current time to stop working.

24. over-temperature protection device according to claim 23, which is characterized in that the temperature protection unit is also used to, After second preset duration, controls the motor and resume work.

25. the over-temperature protection device according to any one of claim 22-24, which is characterized in that

The acquiring unit is also used to obtain the environment temperature of the electronic equipment；According to environment temperature and mapping relations, obtain First preset duration, the mapping relations include the corresponding relationship of the environment temperature Yu first preset duration.

26. over-temperature protection device according to claim 25, which is characterized in that m is 10 times

27. over-temperature protection device according to claim 26, which is characterized in that

28. the over-temperature protection device according to any one of claim 22-27, which is characterized in that

The acquiring unit is also used to obtain the motor when first duration is greater than first preset duration and drive It is stretched from the 2nd time to the m+1 times the second flexible duration in the retractable supports portion；

The temperature protection unit is also used to the start-up temperature protection when second duration is less than first preset duration Mechanism.

29. a kind of electronic equipment characterized by comprising

Over-temperature protection device and/or such as claim 22-28 as described in any one of claim 15-21 is described in any item Over-temperature protection device；

And elevating mechanism and driving unit, the elevating mechanism include motor, and the scalable branch connecting with the motor Support part, for the driving unit for driving the motor to work, the motor is able to drive the retractable supports portion when working It is flexible；

The over-temperature protection device is used for the overheat protector of the elevating mechanism.