CN212969486U - Anti-interference drive circuit of direct current motor for medical treatment - Google Patents
Anti-interference drive circuit of direct current motor for medical treatment Download PDFInfo
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- CN212969486U CN212969486U CN202021669287.4U CN202021669287U CN212969486U CN 212969486 U CN212969486 U CN 212969486U CN 202021669287 U CN202021669287 U CN 202021669287U CN 212969486 U CN212969486 U CN 212969486U
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Abstract
The utility model relates to the field of medical equipment, especially, relate to an anti-interference drive circuit of direct current motor for medical treatment. The technical problem of the utility model is that: provided is a medical DC motor anti-interference drive circuit capable of discharging current generated by a DC motor. The technical scheme is as follows: an anti-interference drive circuit of a medical direct current motor comprises a power supply circuit, an MCU, an optical coupling switch circuit, a Darlington tube drive circuit and the like; the MCU is connected with the input end of the optical coupling switch circuit, and the output end of the optical coupling switch circuit is connected with the input end of the Darlington tube driving circuit. The utility model can discharge the current generated by the DC motor through the reverse freewheeling diode circuit, avoid the current to interfere the MCU and avoid the MCU from crashing; the indicating lamp can be convenient for people to judge whether the direct current motor works or not.
Description
Technical Field
The utility model relates to the field of medical equipment, especially, relate to an anti-interference drive circuit of direct current motor for medical treatment.
Background
In the medical industry, often need use medical instrument, inspect the patient to the doctor judges the condition of patient, and makes corresponding treatment, some medical instrument internally mounted have direct current motor for drive device's operation, direct current motor can produce the electric current when starting and closing, and these electric currents can produce the interference to the singlechip among the control system, lead to the singlechip to die.
An anti-interference drive circuit for a medical direct current motor, which can discharge current generated by the direct current motor, is designed to solve the existing problems.
SUMMERY OF THE UTILITY MODEL
Can produce the electric current in order to overcome direct current motor when starting and closing, these electric currents can produce the singlechip in to control system and disturb, lead to the shortcoming of singlechip crash, the technical problem of the utility model is: provided is a medical DC motor anti-interference drive circuit capable of discharging current generated by a DC motor.
The technical scheme is as follows: the utility model provides an anti-interference drive circuit of direct current motor for medical treatment, is including power supply circuit, MCU, optical coupling switch circuit, darlington pipe drive circuit, direct current motor and reverse freewheel diode circuit, MCU is connected with optical coupling switch circuit's input, optical coupling switch circuit's output and darlington pipe drive circuit's input are connected, darlington pipe drive circuit's output is connected with direct current motor, reverse freewheel diode circuit's output is connected with direct current motor, power supply circuit is MCU, optical coupling switch circuit, darlington pipe drive circuit, direct current motor and the power supply of reverse freewheel diode circuit.
Furthermore, the darlington tube driving circuit further comprises an indicator light, the output end of the darlington tube driving circuit is connected with the indicator light, and the power supply circuit supplies power for the indicator light.
Further, the optical coupling switch circuit comprises an opto-coupler opto iso1, a second resistor R2 and a third resistor R3, wherein the cathode of the opto-coupler opto iso1 is connected with the MCU, the anode of the opto-coupler opto iso1 is connected with the second resistor R2, the other end of the second resistor R2 is connected with +5V, the collector of the opto-coupler opto iso1 is connected with the third resistor R3, and the other end of the third resistor R3 is connected with + 5V.
Further, the darlington tube driving circuit comprises a darlington tube Q1, a first resistor R1, a fourth resistor R4, a fifth resistor R5 and a light emitting diode VD1, an emitter of the photocoupler opto iso1 is connected in series with the base of the fourth resistor R4 and the base of the darlington tube Q1, the emitter of the darlington tube Q1 is grounded, the base of the darlington tube Q1 is connected with the fifth resistor R5, the other end of the fifth resistor R5 is grounded, a collector of the darlington tube Q1 is connected in series with the light emitting diode VD1 and the first resistor R1, and the other end of the first resistor R1 is connected with + 24V.
Further, the reverse free-wheeling diode circuit comprises a first diode D1 and a second diode D2, the collector of the Darlington transistor Q1 is connected with the emitter of the Darlington transistor Q2 in parallel, the collector of the Darlington transistor Q1 is connected with the first diode D1, and the cathode of the first diode D1 is connected with + 24V.
The beneficial effects are that:
1. the current generated by the direct current motor can be released through the reverse freewheeling diode circuit, so that the current is prevented from generating interference on the MCU, and the MCU is prevented from being halted.
2. The indicating lamp can be convenient for people to judge whether the direct current motor works or not.
Drawings
Fig. 1 is a circuit block diagram of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
In the above drawings: the circuit comprises a power supply circuit 1, a MCU2, a coupler switch circuit 3, a Darlington tube drive circuit 4, a DC motor 5, an indicator light 6 and a reverse freewheeling diode circuit 7.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and examples.
Embodiment mode 1
The utility model provides an anti-interference drive circuit of direct current motor for medical treatment, as shown in figure 1, including power supply circuit 1, MCU2, opto-electronic coupling switch circuit 3, darlington pipe drive circuit 4, direct current motor 5 and reverse freewheel diode circuit 7, MCU2 is connected with opto-electronic coupling switch circuit 3's input, opto-electronic coupling switch circuit 3's output and darlington pipe drive circuit 4's input are connected, darlington pipe drive circuit 4's output is connected with direct current motor 5, reverse freewheel diode circuit 7's output is connected with direct current motor 5, power supply circuit 1 is MCU2, opto-electronic coupling switch circuit 3, darlington pipe drive circuit 4, direct current motor 5 and the power supply of reverse freewheel diode circuit 7.
After the anti-interference drive circuit of the medical direct current motor is powered on, the MCU2 controls the operation of the opto-electronic switch circuit 3, the opto-electronic switch circuit 3 controls the operation of the direct current motor 5 through the Darlington tube drive circuit 4, the reverse freewheeling diode circuit 7 can discharge the current generated by the direct current motor 5, the current is prevented from generating interference to the MCU2, the MCU2 is prevented from being halted, after the anti-interference drive circuit of the medical direct current motor 5 is powered off, the direct current motor 5 is turned off, and the reverse freewheeling diode circuit 7 can also discharge the current of the direct current motor 5.
Embodiment mode 2
On the basis of the embodiment 1, as shown in fig. 1, the darlington tube driving circuit further includes an indicator lamp 6, an output end of the darlington tube driving circuit 4 is connected with the indicator lamp 6, and the power circuit 1 supplies power to the indicator lamp 6.
When the direct current motor 5 works, the indicating lamp 6 is turned on, and when the direct current motor 5 is turned off, the indicating lamp 6 is turned off, so that people can conveniently judge whether the direct current motor 5 works.
An anti-interference driving circuit of a medical direct current motor is disclosed, as shown in fig. 2, the opto-coupled switch circuit 3 includes an opto-coupler opto iso1, a second resistor R2 and a third resistor R3, a cathode of the opto-coupler opto iso1 is connected with the MCU2, an anode of the opto-coupler opto iso1 is connected with the second resistor R2, the other end of the second resistor R2 is connected with +5V, a collector of the opto-coupler opto iso1 is connected with the third resistor R3, and the other end of the third resistor R3 is connected with + 5V.
The darlington tube driving circuit 4 comprises a darlington tube Q1, a first resistor R1, a fourth resistor R4, a fifth resistor R5 and a light emitting diode VD1, an emitter of a photoelectric coupler OPTOISO1 is connected with bases of the fourth resistor R4 and the darlington tube Q1 in series, the emitter of the darlington tube Q1 is grounded, the base of the darlington tube Q1 is connected with the fifth resistor R5, the other end of the fifth resistor R5 is grounded, a collector of the darlington tube Q1 is connected with the light emitting diode VD1 and the first resistor R1 in series, and the other end of the first resistor R1 is connected with + 24V.
The reverse free-wheeling diode circuit 7 comprises a first diode D1 and a second diode D2, a collector of the Darlington transistor Q1 is connected with an emitter of the Darlington transistor Q2 in parallel, the collector of the Darlington transistor Q1 is connected with a first diode D1, and a cathode of the first diode D1 is connected with + 24V.
After the anti-interference driving circuit of the medical direct current motor is powered on, the MCU2 outputs a pulse signal, an emitter of a photoelectric coupler OPTOISO1 outputs a low level, a collector of a Darlington tube Q1 outputs a high level, the light-emitting diode VD1 is turned on, the direct current motor 5 starts to work, the diode D1 can discharge current generated by the direct current motor 5 to avoid the current from generating interference on the MCU2, after the anti-interference driving circuit of the medical direct current motor 5 is powered off, the direct current motor 5 is turned off, the diode D2 discharges the current of the direct current motor 5 to avoid the current from generating interference on the MCU2, and the light-emitting diode VD1 is turned off.
It should be understood by those skilled in the art that the above embodiments do not limit the present invention in any way, and all technical solutions obtained by adopting equivalent replacement or equivalent transformation fall within the protection scope of the present invention.
Claims (5)
1. The utility model provides an anti-interference drive circuit of direct current motor for medical treatment which characterized in that: including power supply circuit (1), MCU (2), optical coupling switch circuit (3), darlington pipe drive circuit (4), direct current motor (5) and reverse freewheel diode circuit (7), MCU (2) are connected with the input of optical coupling switch circuit (3), the output of optical coupling switch circuit (3) is connected with the input of darlington pipe drive circuit (4), the output and direct current motor (5) of darlington pipe drive circuit (4) are connected, the output and the direct current motor (5) of reverse freewheel diode circuit (7) are connected, power supply circuit (1) is MCU (2), optical coupling switch circuit (3), darlington pipe drive circuit (4), direct current motor (5) and reverse freewheel diode circuit (7) power supply.
2. The anti-jamming drive circuit for a medical dc motor according to claim 1, wherein: still including pilot lamp (6), the output and the pilot lamp (6) of darlington pipe drive circuit (4) are connected, power supply circuit (1) is pilot lamp (6) power supply.
3. The anti-jamming drive circuit for a medical dc motor according to claim 2, wherein: the optical coupling switch circuit (3) comprises a photoelectric coupler OPTOISO1, a second resistor R2 and a third resistor R3, wherein the cathode of the photoelectric coupler OPTOISO1 is connected with the MCU (2), the anode of the photoelectric coupler OPTOISO1 is connected with the second resistor R2, the other end of the second resistor R2 is connected with +5V, the collector of the photoelectric coupler OPTOISO1 is connected with the third resistor R3, and the other end of the third resistor R3 is connected with + 5V.
4. The anti-jamming drive circuit of a medical dc motor according to claim 3, wherein: the Darlington tube driving circuit (4) comprises a Darlington tube Q1, a first resistor R1, a fourth resistor R4, a fifth resistor R5 and a light emitting diode VD1, an emitter of a photoelectric coupler OPTOISO1 is connected with bases of the fourth resistor R4 and the Darlington tube Q1 in series, the emitter of the Darlington tube Q1 is grounded, the base of the Darlington tube Q1 is connected with the fifth resistor R5, the other end of the fifth resistor R5 is grounded, a collector of the Darlington tube Q1 is connected with the light emitting diode VD1 and the first resistor R1 in series, and the other end of the first resistor R1 is connected with + 24V.
5. The anti-jamming drive circuit of a medical dc motor according to claim 4, wherein: the reverse free-wheeling diode circuit (7) comprises a first diode D1 and a second diode D2, the collector of the Darlington tube Q1 is connected with the emitter of the Darlington tube Q2 in parallel, the collector of the Darlington tube Q1 is connected with the first diode D1, and the cathode of the first diode D1 is connected with + 24V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021669287.4U CN212969486U (en) | 2020-08-12 | 2020-08-12 | Anti-interference drive circuit of direct current motor for medical treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021669287.4U CN212969486U (en) | 2020-08-12 | 2020-08-12 | Anti-interference drive circuit of direct current motor for medical treatment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212969486U true CN212969486U (en) | 2021-04-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021669287.4U Active CN212969486U (en) | 2020-08-12 | 2020-08-12 | Anti-interference drive circuit of direct current motor for medical treatment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212969486U (en) |
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2020
- 2020-08-12 CN CN202021669287.4U patent/CN212969486U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220929 Address after: 545000 1-6, Jinyuan commercial building, No.11, Tanzhong East Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Liuzhou Longhan Medical Management Co.,Ltd. Address before: No.82 Jiangnan Avenue Middle Road, Haizhu District, Guangzhou, Guangdong 510000 Patentee before: Hou Ling |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221018 Address after: 545000 1-6, Jinyuan commercial building, No.11, Tanzhong East Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee after: Liuzhou Wenwen Medical Technology Co.,Ltd. Address before: 545000 1-6, Jinyuan commercial building, No.11, Tanzhong East Road, Liuzhou City, Guangxi Zhuang Autonomous Region Patentee before: Liuzhou Longhan Medical Management Co.,Ltd. |
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| TR01 | Transfer of patent right |