CN110391641A - Overheat protector for motor and motor overheating protect control method - Google Patents
Overheat protector for motor and motor overheating protect control method Download PDFInfo
- Publication number
- CN110391641A CN110391641A CN201910660242.6A CN201910660242A CN110391641A CN 110391641 A CN110391641 A CN 110391641A CN 201910660242 A CN201910660242 A CN 201910660242A CN 110391641 A CN110391641 A CN 110391641A
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- China
- Prior art keywords
- circuit
- motor
- temperature
- control circuit
- excessively high
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001012 protector Effects 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims description 11
- 238000013021 overheating Methods 0.000 title claims description 8
- 238000012545 processing Methods 0.000 claims abstract description 48
- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000009434 installation Methods 0.000 claims abstract description 3
- 230000005611 electricity Effects 0.000 claims description 19
- 230000002457 bidirectional effect Effects 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000012360 testing method Methods 0.000 claims description 2
- 238000012546 transfer Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
- H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
Landscapes
- Protection Of Generators And Motors (AREA)
- Inverter Devices (AREA)
Abstract
Overheat protector for motor; including protector main body, control circuit and CAN node circuit; the control circuit is built in protector main body; the motor is external in control circuit; the CAN node circuit is external in control circuit, and the control circuit includes power converting circuit, temperature acquisition and processing circuit, the excessively high warning circuit of temperature, motor working control circuit composition.The present invention is with small in size convenient for integrated and installation, and the excessively high circuit of temperature is automatically locked, and to prevent temperature, normally rear motor automatically accesses power grid repeatedly, and manufacturing cost is low, simultaneous with network transmission and warning function.
Description
Technical field
The present invention relates to a kind of electric motor protectings to control apparatus field, is specifically designed overheat protector for motor and motor overheating is protected
Protect control method.
Background technique
Currently, motor is widely used in industrial circle, civil field, motor will look over one's shoulder its work during the work time
Temperature breaks down in order to avoid temperature is excessively high.The protector is suitable for the Thermal protection of monophase machine and three-phase motor, and when protection
The state that is automatically locked can be entered after circuit work, motor accesses network operation again after temperature reduction will not being stalled because of motor,
Avoiding access power grid repeatedly leads to motor damage.The protector can choose to install CAN bus node module and carry out telenet simultaneously
Network transmission.The element that protector is used is less, also relatively low convenient for integrated and miniaturization, manufacturing cost.
Summary of the invention
For above description, the present invention designs overheat protector for motor and motor overheating protects control method, passes through temperature
Acquisition acquires the operating temperature of motor with processing circuit.If temperature is excessively high, the excessively high warning circuit of temperature can issue acousto-optic report
Alert, motor can be cut out power grid by motor working control circuit, and enter locking state, and CAN node circuit can be by network to control
Center processed issues signal.For this purpose, the present invention provide overheat protector for motor, including protector main body, control circuit and
CAN node circuit, the control circuit are arranged in protector main body:
The control circuit is built in protector main body, and the motor is external in control circuit, and the CAN node circuit is external
In control circuit, the control circuit include power-switching circuit, temperature acquisition and processing circuit, the excessively high warning circuit of temperature,
Motor working control circuit, power-switching circuit are the power supply of each section circuit, and temperature acquisition and processing circuit are responsible for detecting motor
Temperature signal, and the excessively high warning circuit of temperature, motor working control circuit and CAN node electricity will be sent into after processes temperature signal
Road, wherein signal is sent to LED by the excessively high warning circuit of temperature and loudspeaker issues sound and light alarm signal, motor working control circuit
Motor work, CAN node circuit will be directly controlled after signal processing, and signal is served into bus transfer to remote control room.
It is further improved as overheat protector for motor of the present invention, the temperature acquisition connect electricity with processing circuit input terminal
Power-switching circuit, output end connect the excessively high warning circuit of temperature, motor working control circuit and CAN node circuit, by temperature-sensitive electricity
Resistance, resistance, phase inverter, switching tube, composition.
It is further improved as overheat protector for motor of the present invention, the excessively high warning circuit input terminal of temperature connects power supply
Conversion circuit and temperature acquisition and processing circuit, output end connect loudspeaker and LED light tube, are sent out by switching tube, resistance, LED
Light pipe, loudspeaker composition.
It is further improved as overheat protector for motor of the present invention, the LED light tube and loudspeaker will expose to protection
Except device main body, in order to alarm.
It is further improved as overheat protector for motor of the present invention, the motor working control circuit input terminal connects power supply
Conversion circuit and temperature acquisition and processing circuit, output end are directly connected to motor and 220 volts of AC power sources, by resistance, switching tube,
Bidirectional thyristor composition.
It is further improved as overheat protector for motor of the present invention, the power-switching circuit input terminal connects 220 volts of electricity
Source, output end connects temperature acquisition and processing circuit, the excessively high warning circuit of temperature, motor working control circuit, by diode, two
Pole pipe bridge, capacitor composition.
Be further improved as overheat protector for motor of the present invention, the CAN node circuit input terminal and temperature acquisition with
Processing circuit is connected, and output end is connected with CAN bus.
As overheat protector for motor of the present invention be further improved, the CAN node circuit be external in protector main body it
Outside, it is connected by aviation plug with controller circuitry, it can be according to whether carrying out network transmission carries out selective installation.
The present invention provides a kind of motor overheating protection control method of overheat protector for motor, the specific steps are as follows:
The intracorporal control circuit of protector master of the overheat protector for motor includes that temperature acquisition and processing circuit, temperature are excessively high
Warning circuit, motor working control circuit, power-switching circuit and CAN node circuit, power-switching circuit be temperature acquisition with
The excessively high warning circuit of processing circuit, temperature, motor working control circuit provide power supply, and temperature acquisition and processing circuit will acquire electricity
The operating temperature of machine, and input a signal into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.Temperature
Excessively high warning circuit will issue sound-light alarm after signal processing, motor working control circuit will control motor work after signal processing
Make, CAN node circuit will serve bus and carry out network transmission after signal processing；
In the course of work, thermistor is responsible for temperature collection signal, R in temperature acquisition and processing circuit1It is temperature setting resistance,
For alarm temperature is arranged, when motor operating temperature is normal, rest-set flip-flop chip issues low level, so that switching tube Q1, Q2 are cut
Only, port 2 exports high level signal and is sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit, works as electricity
When machine operating temperature is more than alarming value, thermistor resistance value increases, and rest-set flip-flop chip exports high level, so that switching tube Q1,
Q2 conducting, the conducting of Q1 is so that rest-set flip-flop output is locked in high level state, and until manual reset, port 2 exports low electricity
Ordinary mail number is sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.
When motor operating temperature is normal, switching tube Q5 is connected when high level signal is sent in port 2, and warning circuit does not issue sound
Light alarm, when motor operating temperature is more than alarming value, switching tube Q5 ends when low level signal is sent in port 2, warning circuit
Sound-light alarm is issued, field personnel is prompted.
Motor working control circuit middle port 2 is connected with temperature acquisition with processing circuit, switchs when port 2 is high level
Pipe Q4 conducting sends to trigger signal, bidirectional thyristor conducting for bidirectional thyristor, otherwise thyristor is closed in alternating current commutation
It closes, motor stalling, motor working control circuit middle port 3 is connected with power-switching circuit, this is handing over switching tube Q3 only
Galvanic electricity is ended when pressing commutation, guarantees that switching tube Q4 is smoothly connected when port 2 is high level, and is led in other moment switching tube Q3
It is logical, so that switching tube Q4 ends, to reduce the power consumption and calorific value of entire circuit, so that circuit height is integrated；
Alternating current is become Rectified alternating current by rectifier bridge in power-switching circuit, motor working control circuit is sent into, in order to examine
The test cross galvanic electricity commutation moment compared with stable DC is temperature acquisition and processing circuit, temperature by output after diode and capacitor
It spends high warning circuit and power supply is provided.
The alarm signal that CAN node circuit stalls motor is sent into CAN bus, is transferred to the control centre of distal end.
The present invention designs overheat protector for motor and motor overheating protects control method, is suitable for different types of motor,
The power supply line of motor need to only be connect with the protector, the application self-locking can will not allow motor to access power grid repeatedly, and
And circuit letter section is at low cost, and it can be highly integrated, and easy-to-connect, control precision are high, at low cost, motor manufacturer can also be with
Directly protector is integrated in inside motor.
Detailed description of the invention
Fig. 1 is this patent protective device wiring schematic diagram；
Fig. 2 is this patent protection temperature acquisition and processing circuit；
Fig. 3 is this patent protection excessively high warning circuit of temperature；
Fig. 4 is this patent protection motor working control circuit；
Fig. 5 is this patent protection power source conversion circuit；
Fig. 6 is the CAN node circuit of this patent；
Specific embodiment
Invention is described in detail below in conjunction with drawings and examples:
The present invention designs overheat protector for motor and motor overheating protects control method, is adopted by temperature acquisition with processing circuit
Collect the operating temperature of motor.If temperature is excessively high, the excessively high warning circuit of temperature can issue sound-light alarm, motor working control circuit
Motor can be cut out to power grid, and enter locking state, CAN node circuit can issue signal to control centre by network.
As a kind of specific embodiment of the present invention, as shown in Figure 1, wiring diagram provided by the invention, protector master is intracorporal
Control circuit includes that temperature acquisition and processing circuit are as shown in Figure 2, the excessively high warning circuit of temperature is as shown in Figure 3, motor work is controlled
Circuit processed is as shown in Figure 4, power-switching circuit is as shown in Figure 5, CAN node circuit is as shown in Figure 6.Power-switching circuit is temperature
Acquisition provides power supply with processing circuit, the excessively high warning circuit of temperature, motor working control circuit.Temperature acquisition will with processing circuit
The operating temperature of motor is acquired, and inputs a signal into the excessively high warning circuit of temperature, motor working control circuit, CAN node electricity
Road.The excessively high warning circuit of temperature will issue sound-light alarm after signal processing, motor working control circuit will control after signal processing
Motor work, CAN node circuit will serve bus and carry out network transmission after signal processing.
As shown in Fig. 2, thermistor is responsible for temperature collection signal, R in temperature acquisition and processing circuit1It is temperature setting electricity
Resistance, for alarm temperature is arranged, when motor operating temperature is normal, rest-set flip-flop chip issues low level, so that switching tube Q1,
Q2 cut-off, port 2 export high level signal and are sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.
When motor operating temperature is more than alarming value, thermistor resistance value increases, and rest-set flip-flop chip exports high level, so that switching tube
Q1, Q2 conducting, the conducting of Q1 is so that rest-set flip-flop output is locked in high level state, and until manual reset, port 2 exports low
Level signal is sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.
As shown in figure 3, switching tube Q5 is connected when high level signal is sent in port 2 when motor operating temperature is normal, alarm electricity
Road does not issue sound-light alarm.When motor operating temperature is more than alarming value, switching tube Q5 is cut when low level signal is sent in port 2
Only, warning circuit issues sound-light alarm, prompts field personnel.
As shown in figure 4, motor working control circuit middle port 2 is connected with temperature acquisition with processing circuit, when port 2 is height
Switching tube Q4 is connected when level, sends to trigger signal, bidirectional thyristor conducting for bidirectional thyristor, otherwise thyristor is in alternating current
It is closed when commutation, motor stalling.Motor working control circuit middle port 3 is connected with power-switching circuit, this makes switching tube Q3
Only end in alternating voltage commutation, guarantee that switching tube Q4 is smoothly connected when port 2 is high level, and is switched at other moment
Pipe Q3 conducting, to reduce the power consumption and calorific value of entire circuit, allows circuit highly integrated so that switching tube Q4 ends.
As shown in figure 5, alternating current is become Rectified alternating current by rectifier bridge in power-switching circuit, it is sent into motor job control
Circuit, in order to detect the alternating current commutation moment.It compared with stable DC is temperature acquisition by output after diode and capacitor
Power supply is provided with processing circuit, the excessively high warning circuit of temperature.
As shown in fig. 6, the alarm signal that CAN node circuit stalls motor is sent into CAN bus, it is transferred to the control of distal end
Center.
The above described is only a preferred embodiment of the present invention, being not the limit for making any other form to the present invention
System, and made any modification or equivalent variations according to the technical essence of the invention, still fall within present invention model claimed
It encloses.
Claims (14)
1. overheat protector for motor, which is characterized in that including protector main body, control circuit and CAN node circuit, the control
Circuit is built in protector main body, and the motor is external in control circuit, and the CAN node circuit is external in control circuit,
The control circuit includes power-switching circuit, temperature acquisition and processing circuit, the excessively high warning circuit of temperature, motor job control
Circuit, power-switching circuit are the power supply of each section circuit, and temperature acquisition and processing circuit are responsible for detecting motor temperature signal, and will
The excessively high warning circuit of temperature, motor working control circuit and CAN node circuit are sent into after processes temperature signal, wherein temperature is excessively high
Signal is sent to LED to warning circuit and loudspeaker sending sound and light alarm signal, motor working control circuit will be after signal processings directly
It connects the work of control motor, CAN node circuit and signal is served into bus transfer to remote control room.
2. overheat protector for motor according to claim 1, it is characterised in that: the temperature acquisition and processing circuit input terminal
Power-switching circuit is connected, output end connects the excessively high warning circuit of temperature, motor working control circuit and CAN node circuit, by
Thermistor, resistance, phase inverter, switching tube, rheostat composition.
3. overheat protector for motor according to claim 1, it is characterised in that: the temperature acquisition and processing circuit discovery electricity
After machine temperature is excessively high motor can be powered off, while circuit enter locking state it is normal to prevent motor temperature when automatically access power grid,
Circuit needs manual reset that can just contact locking state.
4. overheat protector for motor according to claim 1, it is characterised in that: the excessively high warning circuit input terminal of temperature
Power-switching circuit and temperature acquisition and processing circuit are connected, output end connects loudspeaker and LED light tube, by switching tube, electricity
Resistance, LED light tube, loudspeaker composition.
5. overheat protector for motor according to claim 4, it is characterised in that: the LED light tube wants exposed with loudspeaker
Except protector main body.
6. overheat protector for motor according to claim 1, it is characterised in that: the motor working control circuit input terminal connects
Connect power-switching circuit and temperature acquisition and processing circuit, output end is directly connected to motor and 220 volts of AC power sources, by resistance,
Switching tube, bidirectional thyristor composition.
7. overheat protector for motor according to claim 1, it is characterised in that: the power-switching circuit input terminal connection
220 volts of power supplys, output end connects temperature acquisition and processing circuit, the excessively high warning circuit of temperature, motor working control circuit, by two
Pole pipe, diode bridge, capacitor composition.
8. overheat protector for motor according to claim 1, it is characterised in that: the CAN node circuit input terminal and temperature
Acquisition is connected with processing circuit, and output end is connected with CAN bus.
9. overheat protector for motor according to claim 1, it is characterised in that: the CAN node circuit is external in protector
Except main body, it is connected by aviation plug with controller circuitry, according to whether carrying out network transmission carries out selective installation.
10. the motor overheating of overheat protector for motor described in claim 1-9 any one protects control method, specific steps are such as
Under, it is characterised in that:
The intracorporal control circuit of protector master of the overheat protector for motor includes that temperature acquisition and processing circuit, temperature are excessively high
Warning circuit, motor working control circuit, power-switching circuit and CAN node circuit, power-switching circuit be temperature acquisition with
The excessively high warning circuit of processing circuit, temperature, motor working control circuit provide power supply, and temperature acquisition and processing circuit will acquire electricity
The operating temperature of machine, and input a signal into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.
11. the excessively high warning circuit of temperature will issue sound-light alarm after signal processing, motor working control circuit will be after signal processing
Motor work is controlled, CAN node circuit will serve bus and carry out network transmission after signal processing；
In the course of work, thermistor is responsible for temperature collection signal, R in temperature acquisition and processing circuit1It is temperature setting resistance,
For alarm temperature is arranged, when motor operating temperature is normal, rest-set flip-flop chip issues low level, so that switching tube Q1, Q2 are cut
Only, port 2 exports high level signal and is sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit, works as electricity
When machine operating temperature is more than alarming value, thermistor resistance value increases, and rest-set flip-flop chip exports high level, so that switching tube Q1,
Q2 conducting, the conducting of Q1 is so that rest-set flip-flop output is locked in high level state, and until manual reset, port 2 exports low electricity
Ordinary mail number is sent into the excessively high warning circuit of temperature, motor working control circuit, CAN node circuit.
12. switching tube Q5 is connected when high level signal is sent in port 2 when motor operating temperature is normal, warning circuit does not issue sound
Light alarm, when motor operating temperature is more than alarming value, switching tube Q5 ends when low level signal is sent in port 2, warning circuit
Sound-light alarm is issued, field personnel is prompted.
13. motor working control circuit middle port 2 is connected with temperature acquisition with processing circuit, switched when port 2 is high level
Pipe Q4 conducting sends to trigger signal, bidirectional thyristor conducting for bidirectional thyristor, otherwise thyristor is closed in alternating current commutation
It closes, motor stalling, motor working control circuit middle port 3 is connected with power-switching circuit, this is handing over switching tube Q3 only
Galvanic electricity is ended when pressing commutation, guarantees that switching tube Q4 is smoothly connected when port 2 is high level, and is led in other moment switching tube Q3
It is logical, so that switching tube Q4 ends, to reduce the power consumption and calorific value of entire circuit, so that circuit height is integrated；
Alternating current is become Rectified alternating current by rectifier bridge in power-switching circuit, motor working control circuit is sent into, in order to examine
The test cross galvanic electricity commutation moment compared with stable DC is temperature acquisition and processing circuit, temperature by output after diode and capacitor
It spends high warning circuit and power supply is provided.
The alarm signal that 14.CAN node circuit stalls motor is sent into CAN bus, is transferred to the control centre of distal end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660242.6A CN110391641B (en) | 2019-07-22 | 2019-07-22 | Motor overheat protector and motor overheat protection control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910660242.6A CN110391641B (en) | 2019-07-22 | 2019-07-22 | Motor overheat protector and motor overheat protection control method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110391641A true CN110391641A (en) | 2019-10-29 |
| CN110391641B CN110391641B (en) | 2024-04-09 |
Family
ID=68286947
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910660242.6A Active CN110391641B (en) | 2019-07-22 | 2019-07-22 | Motor overheat protector and motor overheat protection control method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110391641B (en) |
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| DE1588888A1 (en) * | 1966-12-30 | 1972-02-24 | Texas Instruments Inc | Circuit arrangement for controlling a load connection |
| US4266257A (en) * | 1978-10-02 | 1981-05-05 | Johnson Controls, Inc. | Motor over-heating protection circuit |
| JP2003182622A (en) * | 2001-10-12 | 2003-07-03 | Nissan Motor Co Ltd | Steering angle ratio control device |
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| CN103094887A (en) * | 2011-11-07 | 2013-05-08 | 湖北三环汽车电器有限公司 | Overcurrent and over-temperature protection control circuit |
| CN104638614A (en) * | 2013-11-14 | 2015-05-20 | 成都新方洲信息技术有限公司 | Motor temperature monitor for rotary machinery |
| CN105610125A (en) * | 2015-12-24 | 2016-05-25 | 深圳市共进电子股份有限公司 | Overtemperature protection circuit of network equipment |
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| CN206471805U (en) * | 2017-02-24 | 2017-09-05 | 广州达众计算机科技有限公司 | A kind of POS printer overtemperature protection system |
| CN109406990A (en) * | 2018-12-03 | 2019-03-01 | 成都信息工程大学 | A kind of built-in chip type excess temperature sluggishness protection detection circuit |
| CN109510173A (en) * | 2018-12-07 | 2019-03-22 | 贵阳航空电机有限公司 | Aviation Brushless DC motor driven guard method |
| CN209929958U (en) * | 2019-07-22 | 2020-01-10 | 金陵科技学院 | Overheat protector for motor |
-
2019
- 2019-07-22 CN CN201910660242.6A patent/CN110391641B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1588888A1 (en) * | 1966-12-30 | 1972-02-24 | Texas Instruments Inc | Circuit arrangement for controlling a load connection |
| US4266257A (en) * | 1978-10-02 | 1981-05-05 | Johnson Controls, Inc. | Motor over-heating protection circuit |
| JP2003182622A (en) * | 2001-10-12 | 2003-07-03 | Nissan Motor Co Ltd | Steering angle ratio control device |
| CN201274406Y (en) * | 2008-07-14 | 2009-07-15 | 深圳创维－Rgb电子有限公司 | Overheat protection circuit and electric power system |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110391641B (en) | 2024-04-09 |
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