CN113067508A - Medical instrument motor drive circuit - Google Patents
Medical instrument motor drive circuit Download PDFInfo
- Publication number
- CN113067508A CN113067508A CN202110325078.0A CN202110325078A CN113067508A CN 113067508 A CN113067508 A CN 113067508A CN 202110325078 A CN202110325078 A CN 202110325078A CN 113067508 A CN113067508 A CN 113067508A
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- circuit
- resistor
- coupler
- medical instrument
- isolation circuit
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- 238000002955 isolation Methods 0.000 claims abstract description 45
- 230000003287 optical effect Effects 0.000 claims abstract description 24
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000008878 coupling Effects 0.000 abstract description 19
- 238000010168 coupling process Methods 0.000 abstract description 19
- 238000005859 coupling reaction Methods 0.000 abstract description 19
- 230000000694 effects Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 abstract 1
- 101100236764 Caenorhabditis elegans mcu-1 gene Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/03—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors
- H02P7/04—Arrangements for regulating or controlling the speed or torque of electric DC motors for controlling the direction of rotation of DC motors by means of a H-bridge circuit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
- H02M1/088—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices
- H02M1/092—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters for the simultaneous control of series or parallel connected semiconductor devices the control signals being transmitted optically
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
- H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
- H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
- H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
- H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
- H02P7/285—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only
- H02P7/292—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature supply only using static converters, e.g. AC to DC
Abstract
The invention relates to the field of medical treatment, in particular to a motor driving circuit of a medical instrument. The technical problem of the invention is that: a medical instrument motor drive circuit is provided which can avoid instrument damage. The technical implementation scheme of the invention is as follows: a motor driving circuit of a medical instrument comprises an MCU, a first optical coupling isolation circuit, a second optical coupling isolation circuit and the like; and the input ends of the first optical coupling isolation circuit and the second optical coupling isolation circuit are connected with the MCU. The direct current motor state detection circuit has an isolation effect through the first optical coupling isolation circuit and the second optical coupling isolation circuit, improves the anti-interference capability, avoids the direct current motor from being interfered by other signals, avoids instrument damage, and can be convenient for people to judge the state of the direct current motor through the effects of the second LED indicating lamp and the first LED indicating lamp.
Description
Technical Field
The invention relates to the field of medical treatment, in particular to a motor driving circuit of a medical instrument.
Background
In a hospital, medical instruments are often required to be used for examining patients, along with the development of science and technology, the functions of the medical instruments are more and more, and the medical instruments play an important role in the medical industry.
Aiming at the problems existing at present, a medical instrument motor driving circuit capable of avoiding instrument damage is designed.
Disclosure of Invention
In order to overcome the defects that the operation of a motor is unstable and easy to damage due to the fact that a plurality of electrical elements are arranged in a medical instrument and interference is likely to occur, the technical problem of the invention is as follows: a medical instrument motor drive circuit is provided which can avoid instrument damage.
The technical implementation scheme of the invention is as follows: the utility model provides a medical instrument motor drive circuit, including MCU, first opto-coupler buffer circuit, second opto-coupler buffer circuit, power supply circuit, DC motor and H bridge drive control circuit, first opto-coupler buffer circuit and second opto-coupler buffer circuit's input all is connected with MCU, first opto-coupler buffer circuit and second opto-coupler buffer circuit's output all is connected with H bridge drive control circuit, H bridge drive control circuit's output and DC motor are connected, power supply circuit is MCU, first opto-coupler buffer circuit, second opto-coupler buffer circuit, DC motor and H bridge drive control circuit power supply.
More preferably, the power supply device further comprises a second LED indicator lamp and a first LED indicator lamp, the second LED indicator lamp and the first LED indicator lamp are both connected with the output end of the H-bridge drive control circuit, and the power supply circuit supplies power to the second LED indicator lamp and the first LED indicator lamp.
More preferably, the first optical coupler isolation circuit comprises a photoelectric coupler 4N25-U1, a resistor R1 and a resistor R2, the cathode of the photoelectric coupler 4N25-U1 is connected with the MCU, the anode of the photoelectric coupler 4N25-U1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with +5V, the emitter of the photoelectric coupler 4N25-U1 is grounded, the collector of the photoelectric coupler 4N25-U1 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with + 5V.
More preferably, the second optical coupler isolation circuit comprises a photoelectric coupler 4N25-U3, a resistor R3 and a resistor R4, the cathode of the photoelectric coupler 4N25-U3 is connected with the MCU, the anode of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with +5V, the emitter of the photoelectric coupler 4N25-U3 is grounded, the collector of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with + 5V.
More preferably, the H-bridge drive control circuit comprises an H-bridge driver HM2530A-U2, an electrolytic capacitor EC1, a capacitor C1, a resistor R5, a resistor R6, a light emitting diode VD1 and a light emitting diode VD2, wherein 1 pin of the H-bridge driver HM2530A-U2 is connected with 3 pins thereof, 6 pins of the H-bridge driver HM2530A-U2 are connected with 8 pins thereof, 1 pin of the H-bridge driver HM2530A-U A is connected with a collector of an optoelectronic coupler 4N A-U A, 2 pins of the H-bridge driver HM2530 HM A-U A are connected with a collector of the optoelectronic coupler 4N A-U A, 5 pins of the H-bridge driver HM2530A-U A are connected with a ground, 7 pins and 8 pins of the H-bridge driver HM2530 HM A-U A are connected with a direct current motor HM 2572, the other end of the H-bridge driver HM2530 HM 2572, the resistor R2572, the resistor VD A and the other end of the H-bridge driver, the 6-pin series resistor R6 of the H-bridge driver HM2530A-U2 is connected with the light-emitting diode VD2, and the other end of the light-emitting diode VD2 is grounded.
More preferably, the MCU is a single chip microcomputer.
More preferably, the model of the photoelectric coupler is 4N 25.
More preferably, the H-bridge driver is of type HM 2530A.
More preferably, the second LED indicator light and the first LED indicator light are used to indicate the status of the dc motor.
More preferably, the INA and INB output different levels to control the operation of the dc motor.
Compared with the prior art, the invention has the following advantages:
1. the isolation effect can be played through first opto-coupler isolation circuit and second opto-coupler isolation circuit, improves the interference killing feature, avoids direct current motor to receive the interference of other signals, avoids the instrument to damage.
2. Through the effect of second LED pilot lamp and first LED pilot lamp, can make things convenient for people to judge direct current motor's state.
Drawings
FIG. 1 is a block diagram of the circuit of the present invention.
Fig. 2 is a schematic circuit diagram of the present invention.
The meaning of the reference symbols in the figures: 1. MCU, 2, first opto-coupler isolation circuit, 3, second opto-coupler isolation circuit, 4, power supply circuit, 5, second LED pilot lamp, 6, first LED pilot lamp, 7, DC motor, 8, H bridge drive control circuit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The utility model provides a medical instrument motor drive circuit, as shown in figure 1, including MCU1, first opto-coupler isolation circuit 2, second opto-coupler isolation circuit 3, power supply circuit 4, direct current motor 7 and H bridge drive control circuit 8, first opto-coupler isolation circuit 2 and second opto-coupler isolation circuit 3's input all is connected with MCU1, first opto-coupler isolation circuit 2 and second opto-coupler isolation circuit 3's output all is connected with H bridge drive control circuit 8, H bridge drive control circuit 8's output and direct current motor 7 are connected, power supply circuit 4 is MCU1, first opto-coupler isolation circuit 2, second opto-coupler isolation circuit 3, direct current motor 7 and the power supply of H bridge drive control circuit 8.
The first optical coupling isolation circuit 2 and the second optical coupling isolation circuit 3 can be controlled by signals output by the MCU1, if the first optical coupling isolation circuit 2 and the second optical coupling isolation circuit 3 both output low levels, the H bridge drive control circuit 8 controls the direct current motor 7 to stop, if the first optical coupling isolation circuit 2 outputs high levels and the second optical coupling isolation circuit 3 outputs low levels, the H bridge drive control circuit 8 controls the direct current motor 7 to rotate forwards, if the first optical coupling isolation circuit 2 outputs low levels and the second optical coupling isolation circuit 3 outputs high levels, the H bridge drive control circuit 8 controls the direct current motor 7 to rotate backwards, if the first optical coupling isolation circuit 2 and the second optical coupling isolation circuit 3 both output high levels, the H bridge drive control circuit 8 controls the direct current motor 7 to brake, the first optical coupling isolation circuit 2 and the second optical coupling isolation circuit 3 can realize unidirectional transmission of signals, the anti-interference capability of the direct current motor 7 is improved, the direct current motor 7 is prevented from being interfered by other signals, and instruments are prevented from being damaged.
Example 2
On the basis of embodiment 1, as shown in fig. 1, the power supply device further includes a second LED indicator 5 and a first LED indicator 6, the second LED indicator 5 and the first LED indicator 6 are both connected to an output end of the H-bridge drive control circuit 8, and the power supply circuit 4 supplies power to the second LED indicator 5 and the first LED indicator 6.
When the direct current motor 7 stops, the first LED indicating lamp 6 and the second LED indicating lamp 5 are turned off, when the direct current motor 7 rotates forwards, the first LED indicating lamp 6 is turned on, the second LED indicating lamp 5 is turned off, when the direct current motor 7 rotates backwards, the first LED indicating lamp 6 is turned off, the second LED indicating lamp 5 is turned on, when the direct current motor 7 brakes, the first LED indicating lamp 6 and the second LED indicating lamp 5 are turned on, and people can conveniently judge the state of the direct current motor 7.
Example 3
As shown in fig. 2, the first optical coupling and isolating circuit 2 comprises a photoelectric coupler 4N25-U1, a resistor R1 and a resistor R2, the cathode of the photoelectric coupler 4N25-U1 is connected with an MCU1, the anode of the photoelectric coupler 4N25-U1 is connected with one end of a resistor R1, the other end of the resistor R1 is connected with +5V, the emitter of the photoelectric coupler 4N25-U1 is grounded, the collector of the photoelectric coupler 4N25-U1 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with + 5V.
The second optical coupler isolation circuit 3 comprises a photoelectric coupler 4N25-U3, a resistor R3 and a resistor R4, the cathode of the photoelectric coupler 4N25-U3 is connected with the MCU1, the anode of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with +5V, the emitter of the photoelectric coupler 4N25-U3 is grounded, the collector of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with + 5V.
The H-bridge drive control circuit 8 comprises an H-bridge driver HM2530A-U A, an electrolytic capacitor EC A, a capacitor C A, a resistor R A, a light emitting diode VD A and a light emitting diode VD A, wherein 1 pin of the H-bridge driver HM2530A-U A is connected with 3 pins of the H-bridge driver HM2530A-U A, 6 pins of the H-bridge driver HM2530A-U A are connected with 8 pins of the H-bridge driver, 1 pin of the H-bridge driver HM2530A-U A is connected with a collector of a photocoupler 4N A-U A, a 2 pin of the H-bridge driver HM2530A-U A is connected with a collector of the photocoupler 4N A-U A, a 5 pin of the H-bridge driver HM2530A-U A is connected with the ground, 7 pins and 8 pins of the H-bridge driver HM 2530-U A are connected with a direct current motor 7, the other end of the H-bridge driver HM2530 HM A, the light emitting diode VD A is connected with the resistor R A, the resistor VD A, the resistor R A and the light emitting diode VD A in series, the other end of the light emitting diode VD2 is grounded.
When the signals output by the MCU1 can control the photocouplers 4N25-U1 and 4N25-U3, INA and INB to output low level, the photocouplers 4N25-U1 and 4N25-U3 all output low level, the signals are input into the H bridge driver HM2530A-U2, the H bridge driver HM2530A-U2 controls the stop of the DC motor 7, the light emitting diodes VD1 and 86VD 27 are extinguished, INA outputs high level, when INB outputs low level, the photocouplers 4N25-U1 output high level, the photocouplers 4N25-U3 all output low level, the signals are input into the H bridge driver HM2530 3-U3, the H bridge driver HM 30 3-U3 controls the DC motor 7, the light emitting diodes 3 is lit and extinguished, the INA outputs low level, the INB outputs low level and the U3, the photoelectric couplers 4N25-U3 all output high levels, signals are input into an H bridge driver HM2530A-U2, the H bridge driver HM2530A-U2 controls the direct current motor 7 to rotate reversely, the light emitting diode VD1 is extinguished, the light emitting diode VD2 is lightened, when INA and INB both output high levels, the photoelectric couplers 4N25-U1 and the photoelectric couplers 4N25-U3 both output high levels, signals are input into the H bridge driver HM2530A-U2, the H bridge driver HM2530A-U2 controls the direct current motor 7 to brake, and the light emitting diode VD1 and the light emitting diode VD2 are lightened.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (10)
1. A kind of medical instrument motor driving circuit, its characteristic is: including MCU (1), first opto-coupler isolation circuit (2), second opto-coupler isolation circuit (3), power supply circuit (4), direct current motor (7) and H bridge drive control circuit (8), the input of first opto-coupler isolation circuit (2) and second opto-coupler isolation circuit (3) all is connected with MCU (1), the output of first opto-coupler isolation circuit (2) and second opto-coupler isolation circuit (3) all is connected with H bridge drive control circuit (8), the output and the direct current motor (7) of H bridge drive control circuit (8) are connected, power supply circuit (4) are MCU (1), first opto-coupler isolation circuit (2), second opto-coupler isolation circuit (3), direct current motor (7) and H bridge drive control circuit (8) power supply.
2. A medical instrument motor drive circuit as claimed in claim 1, wherein: the power supply device is characterized by further comprising a second LED indicator lamp (5) and a first LED indicator lamp (6), wherein the second LED indicator lamp (5) and the first LED indicator lamp (6) are connected with the output end of the H-bridge drive control circuit (8), and the power supply circuit (4) supplies power for the second LED indicator lamp (5) and the first LED indicator lamp (6).
3. A medical instrument motor drive circuit as claimed in claim 2, wherein: the first optical coupler isolation circuit (2) comprises a photoelectric coupler 4N25-U1, a resistor R1 and a resistor R2, the cathode of the photoelectric coupler 4N25-U1 is connected with the MCU (1), the anode of the photoelectric coupler 4N25-U1 is connected with one end of the resistor R1, the other end of the resistor R1 is connected with +5V, the emitter of the photoelectric coupler 4N25-U1 is grounded, the collector of the photoelectric coupler 4N25-U1 is connected with one end of the resistor R2, and the other end of the resistor R2 is connected with + 5V.
4. A medical instrument motor drive circuit as claimed in claim 3, wherein: the second optical coupler isolation circuit (3) comprises a photoelectric coupler 4N25-U3, a resistor R3 and a resistor R4, the cathode of the photoelectric coupler 4N25-U3 is connected with the MCU (1), the anode of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R3, the other end of the resistor R3 is connected with +5V, the emitter of the photoelectric coupler 4N25-U3 is grounded, the collector of the photoelectric coupler 4N25-U3 is connected with one end of the resistor R4, and the other end of the resistor R4 is connected with + 5V.
5. The medical instrument motor drive circuit of claim 4, wherein: the H-bridge drive control circuit (8) comprises an H-bridge driver HM2530A-U2, an electrolytic capacitor EC1, a capacitor C1, a resistor R5, a resistor R6, a light-emitting diode VD1 and a light-emitting diode VD2, wherein 1 foot of the H-bridge driver HM2530A-U2 is connected with 3 feet thereof, 6 feet of the H-bridge driver HM2530A-U2 is connected with 8 feet thereof, 1 foot of the H-bridge driver HM2530A-U A is connected with a collector of a photocoupler 4N A-U A, 2 feet of the H-bridge driver HM2530A-U A are connected with a collector of the photocoupler 4N A-U A, 5 feet of the H-bridge driver HM 30A-U A are grounded, the feet and 8 feet of the H-bridge driver HM2530A-U A are both connected with a direct current motor (HM 7), the other end of the resistor VD 2530 HM2530, the resistor R A, the VD A and the light-emitting diode VD 8472 of the H-bridge driver are connected in series, the 6-pin series resistor R6 of the H-bridge driver HM2530A-U2 is connected with the light-emitting diode VD2, and the other end of the light-emitting diode VD2 is grounded.
6. A medical instrument motor drive circuit as claimed in claim 1, wherein: the MCU (1) is a singlechip.
7. A medical instrument motor drive circuit as claimed in claim 3, wherein: the model of the photoelectric coupler is 4N 25.
8. The medical instrument motor drive circuit of claim 5, wherein: the H-bridge driver is model HM 2530A.
9. A medical instrument motor drive circuit as claimed in claim 2, wherein: the second LED indicator lamp (5) and the first LED indicator lamp (6) are used for indicating the state of the direct current motor (7).
10. A medical instrument motor drive circuit as claimed in claim 3, wherein: the INA and INB output different levels to control the operation of the DC motor (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325078.0A CN113067508A (en) | 2021-03-26 | 2021-03-26 | Medical instrument motor drive circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110325078.0A CN113067508A (en) | 2021-03-26 | 2021-03-26 | Medical instrument motor drive circuit |
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| Publication Number | Publication Date |
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| CN113067508A true CN113067508A (en) | 2021-07-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110325078.0A Pending CN113067508A (en) | 2021-03-26 | 2021-03-26 | Medical instrument motor drive circuit |
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Application publication date: 20210702 |