CN208000364U - Motor gear identification device - Google Patents
Motor gear identification device Download PDFInfo
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- CN208000364U CN208000364U CN201820325322.7U CN201820325322U CN208000364U CN 208000364 U CN208000364 U CN 208000364U CN 201820325322 U CN201820325322 U CN 201820325322U CN 208000364 U CN208000364 U CN 208000364U
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Abstract
The utility model discloses a kind of motor gear identification device, which includes:Signal acquisition module, computing module and MCU module;The signal acquisition module, for being sampled respectively to the current signal and voltage signal of motor output, and voltage sample value is inputted into the computing module by voltage signal output end, current sampling data is inputted into the computing module by difference current output end;The computing module, current signal and voltage signal for being acquired according to the signal acquisition module, is calculated active power, and the active power is output to the MCU module;The MCU module, for determining the currently running gear of the motor according to the active power of input.The device can simply, easily realize the detection to motor operation range, improve the accuracy of testing result.
Description
Technical field
The utility model is related to multi gear position technical field of motors, and in particular to a kind of motor gear identification device.
Background technology
Motor refers to a kind of calutron realized electric energy conversion according to the law of electromagnetic induction or transmitted, its main function
It is to generate driving torque, as electrical appliance or the power source of various machineries.Motor is applied extremely extensively in modern industry field,
It can be said that there is the figure that the applicable occasion of electricity can all have motor.In practical applications, in order to meet the application under varying environment
Demand, it will usually multiple gears are designed with, and under different stalls, the energy expenditure of electrical appliance is different.Therefore, to such as
The state recognition of central air conditioning fan coil unit and industrial multi gear speed motor, for its energy consumption measurement and as the shape of rates ground
It is all essential that state, which detects and implement control, and how to carry out accurately identifying for motor gear becomes industry research
One important topic.
In the prior art, mainly there are following two modes to the detection of motor gear:
1. current detecting:The neutral line current of multi gear position motor is acquired by current sensor, is obtained and multi gear position motor
Then the ac current signal is direct current signal by rectifier circuit rectifies by the proportional ac current signal of neutral line current,
The direct current signal is accessed into I/V translation circuits again, current signal is converted into voltage signal, motor is determined according to the voltage signal
Work at present gear.
This detection mode is due to needing intermediate conversion process, thus measurement error is big, and accuracy of detection is low;And due to needing
The such as high, medium and low current signal of each gear is acquired respectively, therefore circuit is complicated and wiring is more.
2. voltage detecting:By measuring the voltage value at one of known fixed gear driving coil both ends, further according to electricity
Mutual induction of voltage characteristic obtains different voltage values between machine winding coil, the voltage of known fixed gear by that will measure and input
Normal voltage be compared, to judge motor work at present gear.
This detection mode intermediate conversion links are more, poor reliability, and accuracy of detection is low;In addition, due to this detection side
In formula, need voltage to be directly accessed or is serially accessed to the circuit plate, to field personnel, there are potential risks.
Utility model content
The utility model embodiment provides a kind of motor gear identification device, is worked motor with simply, easily realizing
The detection of gear improves the accuracy of testing result.
For this purpose, the utility model provides the following technical solutions:
A kind of motor gear identification device, including:Signal acquisition module, computing module and MCU module;
The signal acquisition module, for being sampled respectively to the current signal and voltage signal of motor output,
And voltage sample value is inputted into the computing module by voltage signal output end, current sampling data is exported by difference current
End inputs the computing module;
The computing module, current signal and voltage signal for being acquired according to the signal acquisition module, calculates
It is output to the MCU module to active power, and by the active power;
The MCU module, for determining the currently running gear of the motor according to the active power of input.
Optionally, the signal acquisition module includes:Voltage transformer and current transformer.
Optionally, the signal acquisition module includes:
Voltage sampling unit, for acquiring the motor neutral voltage by the way of electric resistance partial pressure;
Current sampling unit, for acquiring the current difference signal between the motor zero curve and firewire.
Optionally, the voltage sampling unit includes the multiple divider resistances being serially connected between the motor zero curve and ground,
The voltage signal output end is between the multiple divider resistance.
Optionally, the current sampling unit includes:
The copper-manganese resistance being connected between motor zero curve and firewire, and respectively with copper-manganese resistance one end and the difference
The connected filter unit in current output terminal one end.
Optionally, the active power value is converted to square-wave pulse and is output to the MCU module by the computing module.
Optionally, the computing module uses HLW8012 chips.
Optionally, described device further includes:
Gear detects control module, for carrying out adaptive testing control to motor, motor is made to work in each gear successively;
The MCU module includes:
Storage unit, for storing the active power when motor works in each gear;
Sequencing unit, each active power for storing to the storage unit are suitable according to from small to large or from big to small
Sequence is ranked up, and obtains power sequence;
Judging unit, the power sequence for being obtained according to the active power and the sequencing unit that currently input, determines
The currently running gear of motor.
Motor gear identification device provided by the utility model acquires the current signal and electricity of the motor output of multi gear position respectively
Signal is pressed, active power is calculated according to the voltage value of acquisition and current value, and the active power is output to MCU module,
The currently running gear of the motor is determined according to the active power of input by MCU module.The motor gear of the utility model is known
Other apparatus structure is simple, and integrated level is high, directly judges motor gear with power, reduces intermediate transfer process so that detection
As a result more precisely.It is relatively not high to the construction commissioning staff requirement at scene and since wiring is simple, reduce construction and maintenance
Cost.
Description of the drawings
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only described in the utility model
Some embodiments, for those of ordinary skill in the art, other drawings may also be obtained based on these drawings.
Fig. 1 is the gear and winding work relationship schematic diagram of existing multi gear position motor;
Fig. 2 is a kind of structural schematic diagram of the utility model motor gear identification device;
Fig. 3 is the wiring schematic diagram of signal acquisition module and motor in the utility model motor gear identification device;
Fig. 4 is another structural schematic diagram of the utility model motor gear identification device;
Fig. 5 is the flow chart that MCU module judges multi-speed motor gear in the utility model.
Specific implementation mode
In order to make those skilled in the art more fully understand the scheme of the utility model embodiment, below in conjunction with the accompanying drawings and
Embodiment is described in further detail the utility model embodiment.
For the multi gear position motor of common-zero winding multi-tap, with the different rotating speeds for realizing different stalls of winding coil the number of turns
It adjusts, because driving coil the number of turns is different between different stalls, therefore the performance number of motor output is also different.With high, medium and low three gear
For motor, the gear and winding work relationship schematic diagram of existing multi gear position motor are as shown in Figure 1.
Based on the design feature of above-mentioned multi gear position motor, motor gear identification device provided by the utility model is adopted respectively
The current signal and voltage signal for collecting the motor output of multi gear position, wattful power is calculated according to the voltage value of acquisition and current value
Rate, and the active power is output to MCU module, determine that the motor is currently transported according to the active power of input by MCU module
Capable gear.
As shown in Fig. 2, being a kind of structural schematic diagram of the utility model motor gear identification device.
In this embodiment, described device includes:Signal acquisition module 11, computing module 12 and MCU module 13;Its
In:
The current signal and voltage signal that the signal acquisition module 11 is used for respectively to motor output sample,
And voltage sample value is inputted into the computing module 12 by voltage signal output end, current sampling data is defeated by difference current
Outlet inputs the computing module 12;
The current signal and voltage signal that the computing module 12 is used to be acquired according to the signal acquisition module 11 calculate
Active power is obtained, and the active power is output to the MCU module 13;
The MCU module 13 is used to determine the currently running gear of the motor according to the active power of input.
The signal acquisition module 11 acquires the electric current and voltage between two taps of multi gear position motor work.
In practical applications, the specific side that isolation sampling or non-isolated sampling may be used of the signal acquisition module 11
Formula acquires above-mentioned voltage and current.
Corresponding to isolation sample mode, the signal acquisition module may include:Voltage transformer and current transformer.
It, can be correspondingly, described in a manner of preferred non-isolated sampling in view of the not high problem of limited space, integrated level
Signal acquisition module 11 may include voltage sampling unit and current sampling unit, wherein:
The voltage sampling unit by the way of electric resistance partial pressure for acquiring the motor neutral voltage;
The current sampling unit is used to acquire the current difference signal between the motor zero curve and firewire.
The specific structure is shown in FIG. 3 for one kind of the signal acquisition module 11, wherein the voltage sampling unit includes string
The multiple divider resistances being connected between the motor zero curve and ground, such as the divider resistance R4 and R5 in Fig. 3, the voltage signal is defeated
For outlet V2P between the divider resistance R4 and R5, capacitance C3 is used for filtering interference signals.The current sampling unit packet
It includes:The copper-manganese resistance R1 being connected between motor zero curve and firewire, and respectively with described one end copper-manganese resistance R1 and the difference
The connected filter unit in current output terminal one end, the filter unit are filtered using RC, as shown in figure 3, being exported with difference current
Filter unit connected end V1P includes resistance R2 and capacitance C1, and the filter unit being connected with difference current output end V1N includes electricity
Conventional value may be used in the value of resistance R3 and capacitance C2, each resistance and capacitance, and the resistance value of the copper-manganese resistance R1 can be 1m
Ω.Pressure drop is generated on copper-manganese resistance R1, pressure drop signal is by capacitance resistance ware, the final sample rate current at output end V1P, V1N
Differential signal, i.e. difference current output end are V1P, V1N in figure.
The signal acquisition module 11 exports collected current signal and voltage signal to computing module 12;Calculate mould
Block 12 calculates the operating power of motor, i.e. active power.Different operation ranges, operating power are different.
Computing module 12 carries out analog-to-digital conversion to current sampling signal V1P/V1N, voltage sampling signal V2P, obtains number
Signal calculates active power value according to the digital signal, and active power value is then converted to square wave arteries and veins by frequency conversion
Punching, MCU module 13 is output to by the square-wave pulse.
In practical applications, some existing power calculation chips may be used in the computing module 12, for example,
HLW8012 chips etc..
MCU module 13 determines the currently running gear of motor according to the square-wave signal that computing module 12 inputs, for example, will
The external interrupt mode setting of MCU module 13 is that failing edge triggering is interrupted, and is determined in 2 times using 13 external interrupt of MCU module
Disconnected interval, the time interval of adjacent 2 external interrupts is measured using MCU timer internals, obtains the pulse period of power, into
And performance number is obtained, the size of performance number is directly proportional to the size of frequency, is inversely proportional with the size in period.
For a multi gear speed motor, motor operation is in different gears, and the performance number of motor output is also different, with routine
For three fast wind turbines:Stop < low speed operation power < middling speeds and runs power < high-speed cruising power.Therefore, in practical application
In, there can be different sides to the judgement of motor operation range for different application environments and detection object, MCU module 13
Formula.
It, can will be different for example, in the case where the power bracket of gear possessed by motor and each gear is known in advance
In the power bracket setting to MCU module 13 of gear, MCU module 13 can determine whether that motor is currently run according to these setting informations
Gear.
For another example, in the case where not knowing the power bracket of gear possessed by motor and each gear in advance, this practicality
The device of novel offer can also carry out adaptive identification to motor work at present gear.
As shown in figure 4, being another structural schematic diagram of the utility model motor gear identification device.
Unlike embodiment illustrated in fig. 2, in this embodiment, described device further includes:Gear detects control module
14, for carrying out adaptive testing control to motor, motor is made to work in each gear successively.
Correspondingly, in this embodiment, the MCU module 13 includes following each unit:
Storage unit, for storing the active power when motor works in each gear;
Sequencing unit, each active power for storing to the storage unit are suitable according to from small to large or from big to small
Sequence is ranked up, and obtains power sequence;
Judging unit, the power sequence for being obtained according to the active power and the sequencing unit that currently input, determines
The currently running gear of motor.
For example, if multi gear speed motor notch speed series is N, i.e., from 1 grade to n grades, corresponding performance number be respectively W1, W2,
W3,……Wn.After sequence, if it is low or first gear to be defined as W1, Wn is N speed shelves, then motor operation range deterministic process such as Fig. 5 institutes
Show.
It can be seen that the motor gear identification device that the utility model embodiment provides, it is defeated to acquire multi gear position motor respectively
Active power is calculated according to the voltage value of acquisition and current value in the current signal and voltage signal gone out, and by the wattful power
Rate is output to MCU module, and the currently running gear of the motor is determined according to the active power of input by MCU.The utility model
Motor gear identification device it is simple in structure, integrated level is high, directly judges motor gear with power, reduces intermediate converted
Journey so that testing result is more accurate.And since wiring is simple, relatively not high, reduction is required to the construction commissioning staff at scene
Construction and maintenance cost.In addition, the multi gear position motor gear identification device that the utility model embodiment provides, it can also be to electricity
Machine operation range carries out self-adapting estimation.
The utility model motor gear identification device can be applied in plurality of devices and environment, such as:
Example 1:It applies in the gear identification of central air conditioning fan coil unit, is not having communication and data feedback or having logical
In letter and data feedback but the environment of fluctuation of service, fan coil range state can be accurately identified.
Example 2:It applies in the field being managed to each gear run time of motor, is identified by accurately and reliably gear,
It obtains the accurate usage time of motor and uses duration, the run time of each gear is managed and is counted, to identify user
To the use habit and preference of gear, foundation is provided for intelligentized control method.
Example 3:It applies in Charging System of Central Air Conditioning field, when by identifying that central air conditioning fan coil unit gear obtains gear use
Between, in conjunction with the hot exchange power of fan coil, suitable software for calculation and management algorithm are taken, the expense of central air-conditioning may be implemented
With metering.
Example 4:It applies in the field for carrying out energy consumption measure to motor, by identifying that gear obtains gear usage time, in conjunction with
The power of motor value obtained in MCU module is measured and is managed to the energy consumption of motor.
The utility model embodiment is described in detail above, specific implementation mode used herein is to this practicality
Novel to be expounded, the explanation of above example is only intended to the method and devices that help understands the utility model;Meanwhile it is right
It is had in specific embodiments and applications according to the thought of the utility model in those of ordinary skill in the art
Change place, in conclusion the content of the present specification should not be construed as a limitation of the present invention.
Claims (8)
1. a kind of motor gear identification device, which is characterized in that including:Signal acquisition module, computing module and MCU module;
The signal acquisition module, for being sampled respectively to the current signal and voltage signal of motor output, and will
Voltage sample value inputs the computing module by voltage signal output end, and current sampling data is defeated by difference current output end
Enter the computing module;
The computing module, current signal and voltage signal for being acquired according to the signal acquisition module, has been calculated
Work(power, and the active power is output to the MCU module;
The MCU module, for determining the currently running gear of the motor according to the active power of input.
2. motor gear identification device according to claim 1, which is characterized in that the signal acquisition module includes:Electricity
Press mutual inductor and current transformer.
3. motor gear identification device according to claim 1, which is characterized in that the signal acquisition module includes:
Voltage sampling unit, for acquiring the motor neutral voltage by the way of electric resistance partial pressure;
Current sampling unit, for acquiring the current difference signal between the motor zero curve and firewire.
4. motor gear identification device according to claim 3, which is characterized in that the voltage sampling unit includes concatenation
Multiple divider resistances between the motor zero curve and ground, the voltage signal output end be located at the multiple divider resistance it
Between.
5. motor gear identification device according to claim 3, which is characterized in that the current sampling unit includes:
The copper-manganese resistance being connected between motor zero curve and firewire, and respectively with copper-manganese resistance one end and the difference current
The connected filter unit in output end one end.
6. motor gear identification device according to claim 1, which is characterized in that the computing module is by the wattful power
Rate value is converted to square-wave pulse and is output to the MCU module.
7. motor gear identification device according to claim 6, which is characterized in that the computing module uses HLW8012
Chip.
8. motor gear identification device according to any one of claims 1 to 7, which is characterized in that described device further includes:
Gear detects control module, for carrying out adaptive testing control to motor, motor is made to work in each gear successively;
The MCU module includes:
Storage unit, for storing the active power when motor works in each gear;
Sequencing unit, each active power for storing to the storage unit according to sequence from small to large or from big to small into
Row sequence, obtains power sequence;
Judging unit, the power sequence for being obtained according to the active power that currently inputs and the sequencing unit, determine described in
The currently running gear of motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820325322.7U CN208000364U (en) | 2018-03-09 | 2018-03-09 | Motor gear identification device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820325322.7U CN208000364U (en) | 2018-03-09 | 2018-03-09 | Motor gear identification device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111442467A (en) * | 2020-04-17 | 2020-07-24 | 深圳爱思普芯科技有限公司 | Air conditioner gear detection method and detection system for detecting air conditioner gear |
| CN111649479A (en) * | 2019-03-04 | 2020-09-11 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN112229033A (en) * | 2020-10-26 | 2021-01-15 | 广东艾科技术股份有限公司 | Fan gear detection method and device and storage medium |
-
2018
- 2018-03-09 CN CN201820325322.7U patent/CN208000364U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111649479A (en) * | 2019-03-04 | 2020-09-11 | 芜湖美的厨卫电器制造有限公司 | Combustion heat exchange device, gas wall-mounted furnace and gas water heater |
| CN111442467A (en) * | 2020-04-17 | 2020-07-24 | 深圳爱思普芯科技有限公司 | Air conditioner gear detection method and detection system for detecting air conditioner gear |
| CN112229033A (en) * | 2020-10-26 | 2021-01-15 | 广东艾科技术股份有限公司 | Fan gear detection method and device and storage medium |
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