CN208272614U - A kind of electric motor protective device - Google Patents
A kind of electric motor protective device Download PDFInfo
- Publication number
- CN208272614U CN208272614U CN201820652787.3U CN201820652787U CN208272614U CN 208272614 U CN208272614 U CN 208272614U CN 201820652787 U CN201820652787 U CN 201820652787U CN 208272614 U CN208272614 U CN 208272614U
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- central processing
- motor
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Abstract
The utility model discloses a kind of electric motor protective devices, including central processing unit, temperature detecting module, Rotating speed measring module, supply voltage detection module, current detection module, contact modules, motor start stop signal module, fault alarm module and power supply, the temperature detecting module, Rotating speed measring module, supply voltage detection module, the output end of current detection module passes through the input terminal that A/D converter circuit is electrically connected to the central processing unit respectively, the motor start stop signal module is electrically connected to the input terminal of the central processing unit by optical coupling isolation circuit, the output end that the contact modules pass through optical coupling isolation circuit electrical connection and the central processing unit, the output end of the power supply is electrically connected to the motor by the contact modules, the fault alarm module is electrically connected to the central processing unit Output end.The utility model is capable of the failure of real-time monitoring motor, improves the reliability of motor.
Description
Technical field
The utility model relates to motor field of safety protection, more particularly to a kind of electric motor protective device.
Background technique
In recent years, with the development of smart grid, the remote operation of substation controls increasingly developed maturation.It is remotely operating
In control, the crucial power original part that motor is operated as killer switch, motor can reliability service, direct relation remote operation
Success or not.In traditional killer switch, the main protection of motor is the overcurrent protection constituted using pure hardware.With
The variation of environment and the increase of runing time, this mode only with next pure hardware protection motor often will appear slow in reacting
The problem of, when motor breaks down, due to overcurrent overlong time, it is big to cause that the motor feels hot, and motor is caused to burn, final to influence
The reliability service of power grid.
Utility model content
The utility model provides a kind of electric motor protective device, and which solve pure hardware in the prior art in protection motor electricity
When road, there is a problem of reacting slow.
The technical scheme adopted by the utility model to solve the technical problem is as follows: a kind of electric motor protective device, including center
Processing unit, temperature detecting module, Rotating speed measring module, supply voltage detection module, current detection module, contact modules,
Motor start stop signal module, fault alarm module and power supply, the temperature detecting module, Rotating speed measring module, supply voltage inspection
Survey module, the output end of current detection module passes through the input that A/D converter circuit is electrically connected to the central processing unit respectively
End, the input terminal of the temperature detecting module are connected to motor surface, and the input terminal of the Rotating speed measring module is connected to described
The shaft of motor, the input terminal of the supply voltage detection module are electrically connected to the power supply, the current detection module it is defeated
Enter the power supply line that end is electrically connected to the motor, the motor start stop signal module is electrically connected to described by optical coupling isolation circuit
The input terminal of central processing unit, the contact modules pass through optical coupling isolation circuit electrical connection and the central processing unit
The output end of output end, the power supply is electrically connected to the motor, the fault alarm module electricity by the contact modules
It is connected to the output end of the central processing unit.
Further, the temperature detecting module is contact type temperature sensor, and is fixed in the motor housing
Portion.
Further, the Rotating speed measring module is speed probe, and the speed probe uses Hall sensor.
Further, the central processing unit includes single-chip microcontroller, the model C8051f020 of the single-chip microcontroller.
Further, the optical coupling isolation circuit is the 6N137 chip with Phototube Coupling function.
Further, the motor start stop signal input circuit is voltage signal converter.
Further, the contact modules include the contactor and contactor control circuit being electrically connected, described
Contactor control circuit is electrically connected with the optical coupling isolation circuit.
Further, the central processing unit is additionally provided with key module, indicator light and failure alarm circuit, the key
Module is electrically connected with the input terminal of the single-chip microcontroller, and the indicator light and the failure alarm circuit are electrically connected to the single-chip microcontroller
Output end, the failure alarm circuit is electrically connected to the fault alarm module.
Further, the fault alarm module is buzzer siren.
Compared to the prior art, the utility model has the following beneficial effects:
The utility model passes through temperature detecting module, Rotating speed measring module, supply voltage detection module, current detecting mould
The information of block, temperature, revolving speed, electric current and supply voltage when by motor operation is converted into electric signal, will by A/D converter circuit
Power information dress is changed to digital data transmission to central processing unit, central processing unit by the motor operation information to acquisition into
Row comprehensive analysis realizes real-time monitoring and judgement to motor running condition.Relative to traditional pure hardware motor protective circuit,
For the utility model due to using Microcomputer Protection, the accuracy of the judgement in reaction time and integrated information to failure is higher, keeps away
The problem of it is too long to have exempted from the overcurrent time in motor circuit, and motor is caused to burn improves running reliability of motor and uses the longevity
Life.
The utility model is described in further detail with reference to the accompanying drawings and embodiments；But a kind of electricity of the utility model
Machine protective device is not limited to the embodiment.
Detailed description of the invention
Fig. 1 is the overall structure diagram of the utility model.
Specific embodiment
Embodiment, a kind of shown in Figure 1, electric motor protective device of the utility model, including central processing unit 1,
Temperature detecting module 2, Rotating speed measring module 3, supply voltage detection module 4, current detection module 5, contact modules 10, motor
Start stop signal module 9, fault alarm module 6 and power supply 11, the temperature detecting module 2, Rotating speed measring module 3, supply voltage
Detection module 4, current detection module 5 output end pass through A/D converter circuit respectively and be electrically connected to the central processing unit 1
Input terminal, the input terminal of the temperature detecting module 2 are connected to motor surface, the input terminal connection of the Rotating speed measring module 3
In the shaft of the motor, the input terminal of the supply voltage detection module 4 is electrically connected to the power supply 11, the current detecting
The input terminal of module 5 is electrically connected to the power supply line of the motor, and the motor start stop signal module 9 passes through optical coupling isolation circuit electricity
Be connected to the input terminal of the central processing unit 1, the contact modules 10 by optical coupling isolation circuit be electrically connected with it is described
The output end of the output end of central processing unit 1, the power supply 11 is electrically connected to the motor by the contact modules 10,
The fault alarm module 6 is electrically connected to the output end of the central processing unit 1.
In the present embodiment, the temperature detecting module 2 is contact type temperature sensor, and is fixed on the motor housing
Middle part.
In the present embodiment, the Rotating speed measring module 3 is speed probe, and the speed probe uses hall sensing
Device.
In the present embodiment, the central processing unit 1 includes single-chip microcontroller 8, the model C8051f020 of the single-chip microcontroller 8.
In the present embodiment, the optical coupling isolation circuit is the 6N137 chip with Phototube Coupling function.
In the present embodiment, the motor start stop signal input circuit is voltage signal converter.
In the present embodiment, the contact modules 10 include the contactor and contactor control circuit being electrically connected,
The contactor control circuit is electrically connected with the optical coupling isolation circuit.
In the present embodiment, the central processing unit 1 is additionally provided with key module 12, indicator light 13 and failure alarm circuit 7,
The key module 12 is electrically connected with the input terminal of the single-chip microcontroller 8, and the indicator light 13 and the failure alarm circuit 7 are electrically connected
It is connected to the output end of the single-chip microcontroller 8, the failure alarm circuit 7 is electrically connected to the fault alarm module 6.
In the present embodiment, the fault alarm module 6 is buzzer siren.
In the present embodiment, the utility model is realized with the running temperature of motor, motor power voltage, current of electric, motor
Four integrated informations of revolving speed realize closed-loop control to the engineering process of motor operation, reduce electrical fault, improve motor
Reliability and service life.
Above-described embodiment only is used to further illustrate a kind of electric motor protective device of the utility model, but the utility model is simultaneously
Be not limited to the embodiment, it is made by the above technical examples according to the technical essence of the present invention it is any it is simple modification, etc.
With variation and modification, each fall in the protection scope of technical solutions of the utility model.
Claims (9)
1. a kind of electric motor protective device, it is characterised in that: including central processing unit, temperature detecting module, Rotating speed measring module,
Supply voltage detection module, current detection module, contact modules, motor start stop signal module, fault alarm module and power supply,
The temperature detecting module, Rotating speed measring module, supply voltage detection module, current detection module output end pass through AD respectively
Conversion circuit is electrically connected to the input terminal of the central processing unit, and the input terminal of the temperature detecting module is connected to motor table
Face, the input terminal of the Rotating speed measring module are connected to the shaft of the motor, the input terminal of the supply voltage detection module
It is electrically connected to the power supply, the input terminal of the current detection module is electrically connected to the power supply line of the motor, and the motor opens
Stop the input terminal that signaling module is electrically connected to the central processing unit by optical coupling isolation circuit, the contact modules pass through
The output end of the output end of optical coupling isolation circuit electrical connection and the central processing unit, the power supply passes through the contactor mould
Block is electrically connected to the motor, and the fault alarm module is electrically connected to the output end of the central processing unit.
2. electric motor protective device according to claim 1, it is characterised in that: the temperature detecting module is contact temperature
Sensor, and it is fixed on the middle part of the motor housing.
3. electric motor protective device according to claim 1, it is characterised in that: the Rotating speed measring module is revolution speed sensing
Device, the speed probe use Hall sensor.
4. electric motor protective device according to claim 1, it is characterised in that: the central processing unit includes single-chip microcontroller,
The model C8051f020 of the single-chip microcontroller.
5. electric motor protective device according to claim 1, it is characterised in that: the optical coupling isolation circuit be with photoelectricity every
6N137 chip from function.
6. electric motor protective device according to claim 1, it is characterised in that: the motor start stop signal input circuit is electricity
Press signal adapter.
7. electric motor protective device according to claim 1, it is characterised in that: the contact modules include being connected electrically in one
The contactor and contactor control circuit risen, the contactor control circuit are electrically connected with the optical coupling isolation circuit.
8. electric motor protective device according to claim 4, it is characterised in that: the central processing unit is additionally provided with key mould
Block, indicator light and failure alarm circuit, the key module are electrically connected with the input terminal of the single-chip microcontroller, the indicator light and institute
The output end that failure alarm circuit is electrically connected to the single-chip microcontroller is stated, the failure alarm circuit is electrically connected to the fault alarm
Module.
9. electric motor protective device according to claim 8, it is characterised in that: the fault alarm module is buzzing alarm
Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820652787.3U CN208272614U (en) | 2018-05-03 | 2018-05-03 | A kind of electric motor protective device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820652787.3U CN208272614U (en) | 2018-05-03 | 2018-05-03 | A kind of electric motor protective device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208272614U true CN208272614U (en) | 2018-12-21 |
Family
ID=64681482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820652787.3U Active CN208272614U (en) | 2018-05-03 | 2018-05-03 | A kind of electric motor protective device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208272614U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011475A (en) * | 2019-04-08 | 2019-07-12 | 浙江格瑶科技股份有限公司 | A kind of motor protecting device |
-
2018
- 2018-05-03 CN CN201820652787.3U patent/CN208272614U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011475A (en) * | 2019-04-08 | 2019-07-12 | 浙江格瑶科技股份有限公司 | A kind of motor protecting device |
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