CN204721265U - Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor - Google Patents
Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor Download PDFInfo
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- CN204721265U CN204721265U CN201520340415.3U CN201520340415U CN204721265U CN 204721265 U CN204721265 U CN 204721265U CN 201520340415 U CN201520340415 U CN 201520340415U CN 204721265 U CN204721265 U CN 204721265U
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Abstract
The utility model relates to a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor, comprises control module and coupled crystal oscillator module, reseting module, motor drive module and temperature collect module; Described crystal oscillator module is in order to produce the clock frequency needed for described control module; Described motor drive module is external environment condition cooling in order to drive coupled fan turns; Described temperature collect module is in order to gather the temperature value of external environment condition; Described control module is in order to control the different magnitudes of voltage of motor drive module output to realize the rotating speed of fan under different temperatures value.The utility model is arranged in notebook computer cooling seat, controls the rotating speed of direct current machine, realize the auto-adjustment control to fan cooling speed according to temperature signal.
Description
Technical field
The utility model belongs to temperature regulate speed apparatus field, particularly a kind of DC motor speed automatic regulating equipment based on DS18b20 temperature sensor.
Background technology
Along with the development of science and technology, notebook computer enters huge numbers of families, becomes a requisite part in people's daily life, the time of people's computer also becomes more and more longer, so computer can become more and more hotter, can mainboard be burnt out like this, affect the life-span of computer., market having there is diversified notebook computer cooling seat in Given this reason, is used for settlement computer heating problem.But current notebook radiator does not possess automatic speed regulating function, can cause the wasting of resources, also have some radiators to adopt the mode of exhausting cooling, increase and take up room, cannot use in some specific occasion, these all have impact on cooling-down effect.
Summary of the invention
In view of this, the purpose of this utility model is to provide a kind of DC motor speed automatic regulating equipment based on DS18b20 temperature sensor, utilize DS18b20 digital temperature sensor as temperature sensing core, single-chip microcomputer is as control core, and direct current machine is as the temperature control automatic speed regulation of the notebook computer cooling seat driving core to realize.
The utility model adopts following scheme to realize: a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor, comprises control module and coupled crystal oscillator module, reseting module, motor drive module and temperature collect module; Described crystal oscillator module is in order to produce the clock frequency needed for described control module; Described motor drive module is external environment condition cooling in order to drive coupled fan turns; Described temperature collect module is in order to gather the temperature value of external environment condition; Described control module is in order to control the different magnitudes of voltage of motor drive module output to realize the rotating speed of fan under different temperatures value.
Further, described control module and coupled crystal oscillator module, reseting module, motor drive module, temperature collect module are all arranged in a notebook computer cooling seat, be provided with several fans in described radiating seat, described motor drive module is connected with the direct current machine in described fan.
Further, described temperature collect module is DS18B20 temperature sensor.
Further, described control module is 51 single-chip microcomputers.
Further, described control module is connected with a USB module, and described USB module obtains DC power supply in order to be connected to notebook computer.
Preferably, the control program general structure that the control module in this device adopts when controlling the DC motor speed in fan and automatically regulating can be divided into temperature sensing system, PWM control system and automatic control system; Wherein PWM control system utilizes single-chip microcomputer as system core controller, with the interruption of T0 timer and T1 timer with start the PWM producing variable impulse width and export, the initial value being changed pulse frequency and T1 timer by the initial value changing T0 timer changes duty ratio, obtains variable PWM output signal; Temperature sensing system is then the medium using DS18B20 digital temperature sensor as detected temperatures, real-time Intelligent Measurement ambient temperature value; Automatic control system is then the temperature value that obtains according to temperature sensing system and the comparing of set point, draw control signal, the output of variable PWM output signal is controlled by the size controlling duty ratio, thus change the average voltage being carried in motor two ends, change the rotating speed of motor, reach the effect changing rate of heat dispation.
Compared to prior art, the single-chip microcomputer adopted in the utility model has the high feature of control expansibility, and the later stage can also reach the new functional advantage of increase by writing new procedures or increasing new module; At the design aspect of integral layout, the box-packed mechanism that can loose core is added in notebook PC radiator, single-chip microcomputer is arranged in box, design and fix the interface position of fan and single-chip microcomputer, realize single-chip microcomputer can dismounting at any time take out effect, the new module of convenient loading increases new function, the top end cover of notebook PC radiator adds slideway the position of DS18b20 temperature sensor can be made can to adjust according to the difference of thermovent position; The exportable variable impulse width PWM of single-chip microcomputer, therefore there is the feature that stepless continuous regulates in control procedure, duty ratio can be adjusted to 100% from 0%, therefore motor speed can step-less adjustment, namely directly can control the size of duty ratio of output by changing institute, reaching the effect of automatic open close motor and motor many gears rotation speed regulating and controlling.In sum, the utility model, on the basis of hardware unit, can realize intelligent temperature control laptop heat-dissipation function in conjunction with software systems.
Accompanying drawing explanation
Fig. 1 is the temperature automatic control flow chart that the utility model adopts.
Fig. 2 is the integral layout structural framing figure of the notebook computer cooling seat adopted in the utility model.
Fig. 3 is the connection diagram of each circuit module in the utility model.
Fig. 4 is the single chip circuit schematic diagram adopted in this utility model.
Fig. 5 is the circuit diagram of motor drive module in the utility model.
Fig. 6 is the circuit diagram of temperature collect module in the utility model.
Label declaration: 1 is electrical control mainboard district; 2 is louvre; 3 is fan; 4 is electric wire arranging pipe; 5 is USB interface.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described.
A kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor that the present embodiment provides, as shown in Figure 1, comprises control module and coupled crystal oscillator module, reseting module, motor drive module and temperature collect module; Described crystal oscillator module is in order to produce the clock frequency needed for described control module; Described motor drive module is external environment condition cooling in order to drive coupled fan turns; Described temperature collect module is in order to gather the temperature value of external environment condition; Described control module is in order to control the different magnitudes of voltage of motor drive module output to realize the rotating speed of fan under different temperatures value.
In the present embodiment, described control module and coupled crystal oscillator module, reseting module, motor drive module, temperature collect module are all arranged in a notebook computer cooling seat, several fans are provided with in described radiating seat, described motor drive module is connected with the direct current machine in described fan, and wherein the circuit diagram of motor drive module as shown in Figure 5.
Preferably, as shown in Figure 2, described control module and coupled crystal oscillator module, reseting module, motor drive module, temperature collect module are arranged in the electrical control mainboard district 1 of radiating seat; Motor drive module is electrically connected to fan 3, and the electric wire connected is arranged with electric wire arranging pipe 4, and wherein radiating seat is also provided with some louvres 2 and a USB interface 5.
In the present embodiment, described temperature collect module is DS18B20 temperature sensor, and circuit diagram as shown in Figure 6.
In the present embodiment, described control module is 51 single-chip microcomputers, and circuit diagram as shown in Figure 4.
In the present embodiment, described control module is connected with a USB module, and described USB module obtains DC power supply in order to be connected to notebook computer.
In the present embodiment, as shown in Figure 3, in this device, the working procedure of control module adopts C language to write, and adopts modularized design, and global procedures is made up of main program and the subroutine module such as temperature sensing and automatic control, and this device adopts following methods to realize:
First, the temperature value of external environment is taken out by DS18B20 digital temperature sensor Intelligent reading.
Secondly, at notebook computer in real work, there is different temperatures value according to external environment condition and obtain following data: ambient temperature is when temperature less than 25 DEG C, and notebook operating state is normal; Ambient temperature is when temperature 25-35 DEG C, and it is low-frequency slow that notebook work occurs; Ambient temperature is when temperature 35-40 DEG C, and obvious slow phenomenon appears in notebook work; Ambient temperature is when temperature is higher than 40 DEG C, and notebook occurs Caton phenomenon and is delayed; Therefore can arrange as follows in single-chip microcomputer according to above data: when the external environment condition that temperature collect module collects is temperature less than 25 DEG C, duty ratio is 0%, and radiator does not work; When the external environment condition that temperature collect module collects is at temperature 25-35 DEG C, duty ratio is 30%, and motor speed is in the first gear; When the external environment condition that temperature collect module collects is at temperature 35-40 DEG C, duty ratio is 60%, and motor speed is in the second gear; When the external environment condition that temperature collect module collects is when temperature is higher than 40 DEG C, duty ratio is 100%, and motor speed reaches maximum.
Then, utilize the T0 timer of single-chip microcomputer and the interruption of T1 timer and startup, T0 timer interruption makes an I/O port export high level, T1 timer is started in the middle of the interruption of T0 timer, T1 timer makes I/O port output low level, the initial value changing T0 timer changes pulse frequency, and the initial value changing T1 timer changes duty ratio, and the PWM producing variable impulse width exports and exports as controlling.
Finally, control signal is obtained according to comparing the call by result control program obtained, carry out controlled loading by control signal and (be carried in the average voltage at motor two ends: Ud=(ton/T) * Us in the average voltage size at motor two ends, wherein duty ratio=ton/T, change (0≤< 1) the i.e. rotating speed of adjustable motor), change the rotating speed of motor, thus reach the effect changing speed.Owing to being 0% when duty ratio, high level time is 0, then do not have voltage to export; When duty ratio is 100%, high level time is the whole cycle, then export whole voltage.Therefore by regulating duty ratio, can realize regulation output voltage thus the object of adjustment motor speed, simultaneously because output voltage can stepless continuous regulate, therefore electric machine speed regulation also can realize stepless speed regulation.
The foregoing is only preferred embodiment of the present utility model, all equalizations done according to the utility model claim change and modify, and all should belong to covering scope of the present utility model.
Claims (5)
1. based on a DC motor speed automatic regulating equipment for DS18B20 temperature sensor, it is characterized in that: comprise control module and coupled crystal oscillator module, reseting module, motor drive module and temperature collect module; Described crystal oscillator module is in order to produce the clock frequency needed for described control module; Described motor drive module is external environment condition cooling in order to drive coupled fan turns; Described temperature collect module is in order to gather the temperature value of external environment condition; Described control module is in order to control the different magnitudes of voltage of motor drive module output to realize the rotating speed of fan under different temperatures value.
2. a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor according to claim 1, it is characterized in that: described control module and coupled crystal oscillator module, reseting module, motor drive module, temperature collect module are all arranged in a notebook computer cooling seat, be provided with several fans in described radiating seat, described motor drive module is connected with the direct current machine in described fan.
3. a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor according to claim 1, is characterized in that: described temperature collect module is DS18B200 digital temperature sensor.
4. a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor according to claim 1, is characterized in that: described control module is 51 single-chip microcomputers.
5. a kind of DC motor speed automatic regulating equipment based on DS18B20 temperature sensor according to claim 1, is characterized in that: described control module is connected with a USB module, and described USB module obtains DC power supply in order to be connected to notebook computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340415.3U CN204721265U (en) | 2015-05-25 | 2015-05-25 | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520340415.3U CN204721265U (en) | 2015-05-25 | 2015-05-25 | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor |
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| Publication Number | Publication Date |
|---|---|
| CN204721265U true CN204721265U (en) | 2015-10-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520340415.3U Expired - Fee Related CN204721265U (en) | 2015-05-25 | 2015-05-25 | Based on the DC motor speed automatic regulating equipment of DS18B20 temperature sensor |
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| CN (1) | CN204721265U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035706A (en) * | 2017-04-25 | 2017-08-11 | 厦门理工学院 | A kind of intelligent fan |
| CN110958336A (en) * | 2019-11-20 | 2020-04-03 | 维沃移动通信有限公司 | Method and electronic device for controlling motor in telescopic CCM |
-
2015
- 2015-05-25 CN CN201520340415.3U patent/CN204721265U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035706A (en) * | 2017-04-25 | 2017-08-11 | 厦门理工学院 | A kind of intelligent fan |
| CN107035706B (en) * | 2017-04-25 | 2019-05-28 | 厦门理工学院 | A kind of intelligent fan |
| CN110958336A (en) * | 2019-11-20 | 2020-04-03 | 维沃移动通信有限公司 | Method and electronic device for controlling motor in telescopic CCM |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20170525 |
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| CF01 | Termination of patent right due to non-payment of annual fee |