CN207720049U - Motor automatic braking circuit - Google Patents
Motor automatic braking circuit Download PDFInfo
- Publication number
- CN207720049U CN207720049U CN201721733326.0U CN201721733326U CN207720049U CN 207720049 U CN207720049 U CN 207720049U CN 201721733326 U CN201721733326 U CN 201721733326U CN 207720049 U CN207720049 U CN 207720049U
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- China
- Prior art keywords
- connect
- controller
- thermistor
- resistance
- diode
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- 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.)
- Expired - Fee Related
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- Stopping Of Electric Motors (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The utility model discloses a kind of motor automatic braking circuits, including temperature sensing circuit 300, controller 200 and PWM switching circuits and electromagnetic brake；Temperature sensing circuit includes a thermistor, thermistor is set in equipment to be measured, the output end of temperature sensing circuit and the temperature detection end of controller connect, and the PWM control terminals of controller are connect with the controlled end of PWM switching circuits, and PWM switching circuits include magnet exciting coil；Magnet exciting coil is connect with electromagnetic brake.The utility model control intelligence, and motor or equipment can be braked in time, it can effectively avoid equipment excess temperature from damaging.
Description
Technical field
The utility model is related to motor control technology field, more particularly to a kind of motor automatic braking circuit.
Background technology
Motor (English：Electric machinery are commonly called as " motor ") refer to realizing electric energy according to the law of electromagnetic induction
Conversion or a kind of calutron transmitted.Its main function is to generate driving torque, as the dynamic of electrical appliance or various machineries
Power source.The rotor of motor drives other equipment in quick rotation, by transmission mechanism.Quick pivoting friction holds
It easily causes that temperature is higher, causes the damage of equipment, or even cause and catch fire.Existing technology is usually by carrying out motor after detection
Power-off.But this method can not make the rotor of motor stop immediately, and rotor can rotate a period of time since inertia remains unchanged,
Equipment may there is a phenomenon where excess temperatures to burn within the time being rotated further.
Utility model content
The technical problems to be solved in the utility model is how to provide a kind of electricity that can stop rotor rotation immediately
Road.
In order to solve the above-mentioned technical problem, the technical solution of the utility model is：
A kind of motor automatic braking circuit, including temperature sensing circuit, controller and PWM switching circuits and electromagnetic brake；
The temperature sensing circuit includes a thermistor, and the thermistor is set in equipment to be measured, the temperature detection electricity
The output end on road is connect with the temperature detection end of the controller, the PWM control terminals of the controller and the PWM switching circuits
Controlled end connection, the PWM switching circuits include magnet exciting coil；The magnet exciting coil is connect with electromagnetic brake.
Preferably：Further include motor power detection circuit, the motor power detection circuit includes optical coupler, the optocoupler
The input terminal of device is set at the power input of detection, an output end of optical coupler ground connection, the optical coupler it is another defeated
Outlet and the switch control terminal of the controller can link.
Preferably：The PWM switching circuits include capacitance, the first diode, the second diode, switching tube, first resistor
And magnet exciting coil；The controlled end of the switch is connect with the PWM control terminals of the controller, the output end of the switching tube and institute
State the first end connection of first resistor, the second end ground connection of the first resistor, the input terminal of the switching tube and described first
The anode of diode connects, and the cathode of first diode is connect with the cathode of second diode, the two or two pole
The anode of pipe is connect with power supply, the both ends for being parallel to first diode of the magnet exciting coil, the first end of the capacitance
It is connect with the anode of second diode, the second end ground connection of the capacitance.
Preferably：The temperature sensing circuit includes second resistance, 3rd resistor, the 4th resistance and thermistor；It is described
The first end of thermistor is grounded, and the second end of the thermistor is connect with the first end of the second resistance, and described second
The second end of resistance is connect with the temperature detection test side of the controller, and the first end of the 3rd resistor is connect with power supply,
The second end of the 3rd resistor is connect with the first end of the second resistance, the 4th resistance first end and the third electricity
The second end of resistance connects, the second end ground connection of the 4th resistance, the thermistor setting and position to be measured.
Preferably：The thermistor is NTC thermistor.
Preferably：The controller passes through chip microcontroller.
Preferably：Further include toggle switch, the output end of the toggle switch is connect with the setting end of the controller；Institute
Toggle switch is stated, user's input is received, the PWM duty cycle of the signal of the PWM control terminals output of the controller is set, with setting
Flow through the size of current of the magnet exciting coil.
It is formd by temperature sensing circuit, controller and PWM switching circuits and electromagnetic brake using above-mentioned technical proposal
A kind of automatic automatic circuit of motor.By the way that the thermistor of temperature sensing circuit to be arranged to the device location in easy excess temperature, work as temperature
When spending high, temperature sensing circuit transmission excess temperature signal to the controller, controller transmission pwm signal to PWM switching circuits,
It by the make-and-break time of the Duty ratio control switching tube of pwm signal, and then controls electromagnetism and embraces valve, valve is embraced to motor by electromagnetism
Or equipment brake.Technical solutions of the utility model control intelligence, and brake in time, it can effectively avoid damage caused by excess temperature
Wound.
Description of the drawings
Fig. 1 is the schematic diagram of the utility model motor automatic braking circuit；
Fig. 2 is the circuit structure diagram of the utility model motor automatic braking circuit.
In figure, 100-PWM switching circuits, 200- controllers, 300- temperature sensing circuits, 400- motor powers detection electricity
Road, 500- electromagnetism embrace valve, U- optical couplers, RT- thermistors, C- capacitances, Q- switching tubes, the first diodes of D1-, D2- the two or two
Pole pipe, R1- first resistors, R2- second resistances, R3- 3rd resistors, the 4th resistance of R4-, L- magnet exciting coils.
Specific implementation mode
Specific embodiment of the present utility model is described further below in conjunction with the accompanying drawings.It should be noted that
The explanation of these embodiments is used to help to understand the utility model, but does not constitute the restriction to the utility model.This
Outside, technical characteristic involved in the various embodiments of the present invention described below is as long as they do not conflict with each other
It can be combined with each other.
Referring to Fig.1, technical solutions of the utility model propose a kind of motor automatic braking circuit, including temperature sensing circuit
300, controller 200 and PWM switching circuits and electromagnetic brake；Temperature sensing circuit 300 includes a thermistor RT, thermistor
RT is set in equipment to be measured, and the output end of temperature sensing circuit 300 is connect with the temperature detection end of controller 200, control
The PWM control terminals of device 200 are connect with the controlled end of PWM switching circuits 100, and PWM switching circuits 100 include magnet exciting coil L；It encourages
Magnetic coil L is connect with electromagnetic brake.
Using above-mentioned technical proposal, embraced by temperature sensing circuit 300, controller 200 and PWM switching circuits 100 and electromagnetism
Lock forms a kind of automatic automatic circuit of motor.By being arranged the thermistor RT of temperature sensing circuit 300 in easy excess temperature
Device location, when the temperature is excessively high, temperature sensing circuit 300 send excess temperature signal to controller 200, and controller 200 sends PWM
Signal is to PWM switching circuits 100, by the make-and-break time of the Duty ratio control switching tube Q of pwm signal, and then controls electromagnetism and embraces
Valve 500 embraces the braking to motor or equipment of valve 500 by electromagnetism.Technical solutions of the utility model control intelligence, and brake
In time, damage caused by excess temperature can effectively be avoided.
Specifically：Further include motor power detection circuit 400, motor power detection circuit includes optical coupler U, optical coupler U
Input terminal be set at the power input of detection, an output end of optical coupler U ground connection, another output end and the control of optical coupler U
The switch control terminal of device 200 processed can link.
With reference to Fig. 2, specifically：PWM switching circuits 100 include capacitance C, the first diode D1, the second diode D2, switch
Pipe Q, first resistor R1 and magnet exciting coil L；The controlled end of switch is connect with the PWM control terminals of controller 200, and switching tube Q's is defeated
Outlet is connect with the first end of first resistor R1, the second end ground connection of first resistor R1, the input terminal of switching tube Q and the one or two pole
The anode of pipe D1 connects, and the cathode of the first diode D1 is connect with the cathode of the second diode D2, the anode of the second diode D2
It is connect with power supply, the both ends for being parallel to the first diode D1 of magnet exciting coil L, the first end of capacitance C is with the second diode D2's
Anode connects, the second end ground connection of capacitance C.
Specifically：Temperature sensing circuit 300 includes second resistance R2,3rd resistor R3, the 4th resistance R4 and thermistor
RT；The first end of thermistor RT is grounded, and the second end of thermistor RT is connect with the first end of second resistance R2, second resistance
The second end of R2 is connect with the temperature detection test side of controller 200, and the first end of 3rd resistor R3 is connect with power supply, third electricity
Resistance R3 second end connect with the first end of second resistance R2, the first end and 3rd resistor R3 of the 4th resistance R4 second end
Connection, the second end ground connection of the 4th resistance R4, thermistor RT settings and position to be measured.
Specifically：Thermistor RT is NTC thermistor RT.
Specifically：Controller 200 passes through chip microcontroller.
Specifically：Further include toggle switch, the output end of toggle switch is connect with the setting end of controller 200；Dial-up is opened
It closes, receives user's input, the PWM duty cycle of the signal of the PWM control terminals output of setting controller 200 flows through excitation with setting
The size of current of coil L.
The utility model embodiment is monitored by being arranged NTC thermistor RT in the position of the easy excess temperature of equipment, when
When the position excess temperature, the change in resistance of thermistor RT, the temperature detection end of controller 200 detects the variation of voltage, in turn
The make-and-break time of the switching tube Q of bucket PWM signals control PWM switching circuits 100, and then control the big through galvanic electricity stream of magnet exciting coil L
Small, magnet exciting coil L control electromagnetism embraces valve 500, and then realizes the braking of rotor or equipment rotor, timely stops its turn
The phenomenon that moving, effectively avoiding excess temperature, simple intelligence.
The embodiment of the utility model is explained in detail above in association with attached drawing, but the utility model is not limited to be retouched
The embodiment stated.For a person skilled in the art, right in the case where not departing from the utility model principle and spirit
These embodiments carry out a variety of change, modification, replacement and modification, still fall in the scope of protection of the utility model.
Claims (7)
1. a kind of motor automatic braking circuit, it is characterised in that：Including temperature sensing circuit, controller and PWM switching circuits and
Electromagnetic brake；The temperature sensing circuit includes a thermistor, and the thermistor is set in equipment to be measured, the temperature
The output end of degree detection circuit is connect with the temperature detection end of the controller, PWM control terminals and the PWM of the controller
The controlled end of switching circuit connects, and the PWM switching circuits include magnet exciting coil；The magnet exciting coil is connect with electromagnetic brake.
2. motor automatic braking circuit according to claim 1, it is characterised in that：Further include motor power detection circuit,
The motor power detection circuit includes optical coupler, and the input terminal of the optical coupler is set at the power input of detection, described
One output end of optical coupler is grounded, and another output end of the optical coupler can be linked with the switch control terminal of the controller.
3. motor automatic braking circuit according to claim 1, it is characterised in that：The PWM switching circuits include capacitance,
First diode, the second diode, switching tube, first resistor and magnet exciting coil；The controlled end of the switch and the controller
The connection of PWM control terminals, the output end of the switching tube connect with the first end of the first resistor, the of the first resistor
Two ends are grounded, and the input terminal of the switching tube connect with the anode of first diode, the cathode of first diode and
The cathode of second diode connects, and the anode of second diode is connect with power supply, and the magnet exciting coil is parallel to
The both ends of first diode, the first end of the capacitance are connect with the anode of second diode, and the of the capacitance
Two ends are grounded.
4. motor automatic braking circuit according to claim 3, it is characterised in that：The temperature sensing circuit includes second
Resistance, 3rd resistor, the 4th resistance and thermistor；The first end of the thermistor is grounded, and the second of the thermistor
End is connect with the first end of the second resistance, the temperature detection test side of the second end of the second resistance and the controller
Connection, the first end of the 3rd resistor are connect with power supply, the second end of the 3rd resistor and the first of the second resistance
The first end of end connection, the 4th resistance of institute is connect with the second end of the 3rd resistor, and the second end of the 4th resistance is grounded,
The thermistor setting and position to be measured.
5. motor automatic braking circuit according to claim 1, it is characterised in that：The thermistor is NTC temperature-sensitive electricity
Resistance.
6. motor automatic braking circuit according to claim 1, it is characterised in that：The controller passes through microcontroller reality
It is existing.
7. motor automatic braking circuit according to claim 1, it is characterised in that：Further include toggle switch, the dial-up
The output end of switch is connect with the setting end of the controller；The toggle switch receives user's input, the controller is arranged
The output of PWM control terminals signal PWM duty cycle, the size of current of the magnet exciting coil is flowed through with setting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733326.0U CN207720049U (en) | 2017-12-13 | 2017-12-13 | Motor automatic braking circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721733326.0U CN207720049U (en) | 2017-12-13 | 2017-12-13 | Motor automatic braking circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207720049U true CN207720049U (en) | 2018-08-10 |
Family
ID=63055616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721733326.0U Expired - Fee Related CN207720049U (en) | 2017-12-13 | 2017-12-13 | Motor automatic braking circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207720049U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087164A (en) * | 2020-09-29 | 2020-12-15 | 浙江工业职业技术学院 | Motor braking control circuit |
| CN114750157A (en) * | 2022-04-29 | 2022-07-15 | 深圳市大族机器人有限公司 | Electromagnetic band-type brake control device and electromagnetic band-type brake equipment |
-
2017
- 2017-12-13 CN CN201721733326.0U patent/CN207720049U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112087164A (en) * | 2020-09-29 | 2020-12-15 | 浙江工业职业技术学院 | Motor braking control circuit |
| CN114750157A (en) * | 2022-04-29 | 2022-07-15 | 深圳市大族机器人有限公司 | Electromagnetic band-type brake control device and electromagnetic band-type brake equipment |
| CN114750157B (en) * | 2022-04-29 | 2023-12-08 | 深圳市大族机器人有限公司 | Electromagnetic band-type brake control device and electromagnetic band-type brake equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180810 Termination date: 20201213 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |