CN109149522A - A kind of motor control protective device and printer, reader - Google Patents
A kind of motor control protective device and printer, reader Download PDFInfo
- Publication number
- CN109149522A CN109149522A CN201811090111.0A CN201811090111A CN109149522A CN 109149522 A CN109149522 A CN 109149522A CN 201811090111 A CN201811090111 A CN 201811090111A CN 109149522 A CN109149522 A CN 109149522A
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- switch module
- motor
- resistance
- voltage
- predeterminated voltage
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- 230000001681 protective effect Effects 0.000 title claims abstract description 32
- 230000005669 field effect Effects 0.000 claims description 51
- 230000005611 electricity Effects 0.000 claims description 9
- 230000000694 effects Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 4
- 239000003990 capacitor Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
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- 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
- H02H7/09—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 over-voltage; against reduction of voltage; against phase interruption
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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
- H02P1/00—Arrangements for starting electric motors or dynamo-electric converters
- H02P1/16—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters
- H02P1/18—Arrangements for starting electric motors or dynamo-electric converters for starting dynamo-electric motors or dynamo-electric converters for starting an individual dc motor
-
- 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
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/08—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing a dc motor
Abstract
The invention belongs to motor field, a kind of motor control protective device and printer, reader are disclosed, the anode of input power and the anode of motor are connected to according to control voltage by first switch module；Second switch module is according to the anode of control voltage connection motor and the cathode of motor；Third switch module is connected to the cathode and power ground of motor according to control voltage；Wherein, the threshold voltage of second switch module conducting is the first predeterminated voltage, and the threshold voltage of third switch module conducting is the second predeterminated voltage, and the threshold voltage of first switch module conducting is third predeterminated voltage；Third predeterminated voltage is greater than the second predeterminated voltage, second predeterminated voltage is greater than the first predeterminated voltage, since shutdown moment is sequentially communicated third switch module and second switch module, it realizes and the high current for moment of shutting down is discharged into power ground, and in circuit start, module is sequentially started switch according to voltage levels, it is therefore prevented that the instantaneous short-circuit problem as caused by device inherent parameters problem improves the service life of motor；And motor can be made quickly to stop during shutdown, braking action is played, motor motion control precision is improved.
Description
Technical field
The invention belongs to motor field more particularly to a kind of motor control protective device and printers, reader.
Background technique
Traditional motor control protective device includes: switch module, control module and current transformer；Switch module it is defeated
Outlet is connected to one end of motor；The primary side of current transformer is connected to the other end of motor；The input terminal of control module connects
To the secondary side of current transformer, the output end of control module is connected to the control terminal of switch module；It is set when the electric current of motor is greater than
When fixed threshold current, control module output overcurrent controls Signal-controlled switch module and disconnects.Traditional current foldback circuit is logical
Overcurrent mutual inductor samples the electric current of motor, when the electric current of collected motor is greater than the threshold current of setting, control
Molding block output overcurrent controls signal and control switch module disconnects, and cutting DC power supply is powered to motor；Motor was carried out
Stream protection；To reduce the power consumption of circuit, sampling precision is improved.Since it only carries out overcurrent during DC power supply power supply
Protection, therefore can not protect high current caused by DC power supply shutdown moment, can not also be avoided in circuit start due to
Instantaneous short-circuit problem caused by device inherent parameters problem.
Therefore traditional motor control protective device exists and can not protect to high current caused by DC power supply shutdown moment
Shield and the defect that not can avoid the instantaneous short-circuit as caused by device inherent parameters problem in circuit start.
Summary of the invention
The present invention provides a kind of motor control protective device and printers, reader, it is intended to solve traditional motor control
Protective device presence processed can not carry out protection and in circuit start due to device to high current caused by DC power supply shutdown moment
The problem of instantaneous short-circuit caused by part inherent parameters problem.
The invention is realized in this way a kind of motor control protective device, motor control protective device are connected to motor, institute
It states motor control protective device and accesses externally input control voltage, and include:
It is connect with the anode of the motor, for the anode and the motor according to the control voltage connection input power
Anode first switch module；
It is connect with the first switch module and the motor, for being connected to the motor just according to the control voltage
The second switch module of the cathode of pole and the motor；And
It is connect with the second switch module and the motor, for being connected to the negative of the motor according to the control voltage
The third switch module of pole and power ground；
Wherein, the threshold voltage of the second switch module conducting is the first predeterminated voltage, and the third switch module is led
Logical threshold voltage is the second predeterminated voltage, and the threshold voltage of the first switch module conducting is third predeterminated voltage；It is described
Third predeterminated voltage is greater than second predeterminated voltage, and second predeterminated voltage is greater than first predeterminated voltage.
Further, when the control voltage is greater than the third predeterminated voltage, the first switch module connection is defeated
Enter the anode of power supply, the third switch module is connected to the cathode and power ground of the motor, and the second switch module is cut
Only；The motor works normally；
When the control voltage is greater than second predeterminated voltage and the control voltage is less than the third predeterminated voltage
When, the third switch module is connected to the cathode and power ground of the motor, and the first switch module and described second is opened
Close module cut-off；
When the control voltage is greater than first predeterminated voltage and the control voltage is less than second predeterminated voltage
When, the first switch module, the second switch module and the third switch module are turned off；
When the control voltage is less than first predeterminated voltage, the second switch module is being connected to the motor just
The cathode of pole and the motor, the first switch module and third switch module cut-off, the second switch module disappear
The energy of electric current caused by inertia motion when consuming motor shutdown.
It further, include fuse in the second switch module, when the electric current is greater than current threshold, the fuse is molten
It is disconnected.
Further, the second switch module further includes the second field-effect tube, third transistor, the 7th resistance, the 8th
Resistance and the 9th resistance；
The drain electrode of second field-effect tube is connect with the first end of the fuse, and the source electrode of second field-effect tube is
The output end of the second switch module, the first end of the grid of second field-effect tube and the 9th resistance and described the
The collector of three triodes connects, the first end and the 8th resistance of the base stage of the third transistor and the 7th resistance
First end connection, the second end of the 7th resistance is the control terminal of the second switch module, the third transistor
The second end of emitter and the 8th resistance is connected to power ground altogether, and the second end of the 9th resistance is connect with the first power supply.
Further, the third switch module includes third field-effect tube, eleventh resistor and twelfth resistor；
The drain electrode of the third field-effect tube is the input terminal of the third switch module, the grid of the third field-effect tube
Pole is connect with the first end of the first end of the eleventh resistor and the twelfth resistor, the second end of the eleventh resistor
Source electrode for the control terminal of the third switch module, the third field-effect tube is connected with the second end of the twelfth resistor
Further, the first switch module includes the first field-effect tube, the first triode, the second triode, first
Resistance, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and the 6th resistance；
The drain electrode of first field-effect tube is the output end of the first switch module, the source of first field-effect tube
Pole is connect with the first end of the 3rd resistor, the first end of the second resistance, the first end of the first resistor, and described
The grid of one field-effect tube and the second end of the 3rd resistor, the first end of the 6th resistance, first triode
Collector connection, the emitter of first triode are the defeated of the first switch module with the second end of the first resistor
Enter end, the base stage of first triode connect with the second end of the second resistance, the collector of second diode and
The second end of 6th resistance connects, the first end and the described 5th of the base stage of second diode and the 4th resistance
The first end of resistance connects, and the second end of the 4th resistance is the control terminal of the first switch module, the two or two pole
The second end of the emitter of pipe and the 5th resistance is connected to power ground altogether.
The present invention also protects a kind of printer, and the printer includes motor and above-mentioned motor control protective device.
The present invention also protects a kind of reader, and the reader includes motor and above-mentioned motor control protective device.
The embodiment of the present invention is being connected to the positive and motor of input power just according to control voltage by first switch module
Pole；Second switch module is according to the anode of control voltage connection motor and the cathode of motor；Third switch module is according to control electricity
The cathode and power ground of pressure connection motor；Wherein, the threshold voltage of second switch module conducting is the first predeterminated voltage, and third is opened
The threshold voltage for closing module conducting is the second predeterminated voltage, and the threshold voltage of first switch module conducting is third predeterminated voltage；
Third predeterminated voltage is greater than the second predeterminated voltage, and the second predeterminated voltage is greater than the first predeterminated voltage, since shutdown moment successively connects
Logical third switch module and second switch module, realize the high current for moment of shutting down being discharged into power ground, in circuit start
When, module is sequentially started switch according to voltage levels, it is therefore prevented that the instantaneous short-circuit problem as caused by device inherent parameters problem,
Improve the service life of motor；And motor can be made quickly to stop during shutdown, braking action is played, motor motion control essence is improved
Degree.
Detailed description of the invention
Technological invention in order to illustrate the embodiments of the present invention more clearly will make below to required in embodiment description
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
Fig. 1 is a kind of function structure chart of motor control protective device provided in an embodiment of the present invention；
Fig. 2 is the exemplary circuit structure chart of motor control protective device provided in an embodiment of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is described in further detail.
Fig. 1 shows the modular structure of motor control protective device provided in an embodiment of the present invention, for ease of description, only
Part related to the embodiment of the present invention is shown, details are as follows:
Above-mentioned motor control protective device is connect with motor 04, the access of motor control protective device motor control protective device
Externally input control voltage Ctrl, and including first switch module 01, second switch module 02 and third switch module 03.
First switch module 01 is connect with the anode of motor 04, for being connected to input power just according to control voltage Ctrl
The anode of pole and motor 04；
Second switch module 02 is connect with first switch module 01 and motor 04, for according to control voltage Ctrl connection electricity
The anode of machine 04 and the cathode of motor 04；And
Third switch module 03 is connect with second switch module 02 and motor 04, for according to control voltage Ctrl connection electricity
The cathode and power ground of machine 04；
Wherein, the threshold voltage that second switch module 02 is connected is the first predeterminated voltage, what third switch module 03 was connected
Threshold voltage is the second predeterminated voltage, and the threshold voltage that first switch module 01 is connected is third predeterminated voltage；The default electricity of third
Pressure is greater than the second predeterminated voltage, and the second predeterminated voltage is greater than the first predeterminated voltage.
In specific embodiment, when controlling voltage Ctrl greater than third predeterminated voltage, the connection input of first switch module 01
The anode of power supply, third switch module 03 is connected to the cathode and power ground of motor 04, and second switch module 02 is ended；By defeated
Enter the circuit of power supply, first switch module 01, motor 04, third switch module 03 and power ground composition, the normal work of motor 04
Make.
When controlling voltage Ctrl greater than the second predeterminated voltage and control voltage Ctrl is less than third predeterminated voltage, third is opened
Cathode and power ground that module 03 is connected to motor 04 are closed, and first switch module 01 and second switch module 02 are ended；Pass through
Three switch modules 03 are connected to the cathode and power ground of motor 04, release the high current of shutdown moment, prevent the big of shutdown moment
The damage of motor 04 caused by electric current.
When controlling voltage Ctrl greater than the first predeterminated voltage and control voltage Ctrl is less than the second predeterminated voltage, first is opened
Module 01, second switch module 02 and third switch module 03 is closed to be turned off.
When controlling voltage Ctrl less than the first predeterminated voltage, second switch module 02 is connected to the anode and motor of motor 04
04 cathode, first switch module 01 and third switch module 03 end, and second switch module 02 consumes used when motor 04 shuts down
Property move caused by electric current energy, to improve the service life of motor 04.Include fuse in second switch module 02, works as electricity
Machine 04 shut down when inertia motion caused by electric current be greater than current threshold when or various failures (such as electric motor short circuit) caused by electric current
When greater than current threshold, fuse failure.To further prevent motor 04, field-effect tube and triode etc. caused by high current
Component damage improves the service life of motor 04 and component.
Specifically, control voltage Ctrl is starting/stopping control signal of motor, control voltage Ctrl can be by controlling
Module output, control module may include microprocessor, field programmable gate array or digital signal processor.
Fig. 2 shows the exemplary circuit structures of motor control protective device provided in an embodiment of the present invention, for the ease of saying
Bright, only parts related to embodiments of the present invention are shown, and details are as follows:
First switch module 01 includes the first field-effect tube M1, the first triode Q1, the second triode Q2, first resistor
R1, second resistance R2,3rd resistor R3, the 4th resistance R4, the 5th resistance R5 and the 6th resistance R6；
The drain electrode of first field-effect tube M1 is the output end of first switch module 01, the source electrode of the first field-effect tube M1 and the
The first end of three resistance R3, the first end of second resistance R2, the connection of the first end of first resistor R1, the grid of the first field-effect tube M1
Pole is connect with the collector of the second end of 3rd resistor R3, the first end of the 6th resistance R6, the first triode Q1, the first triode
The second end of the emitter of Q1 and first resistor R1 are the input terminal of first switch module 01, the base stage of the first triode Q1 and the
The second end of two resistance R2 connects, and the collector of the second diode Q2 is connect with the second end of the 6th resistance R6, the second diode
The base stage of Q2 is connect with the first end of the first end of the 4th resistance R4 and the 5th resistance R5, and the second end of the 4th resistance R4 is first
The control terminal of switch module 01, the emitter of the second diode Q2 and the second end of the 5th resistance R5 are connected to power ground altogether.
First switch module 01 can also include first capacitor C1, and the first end and input power VCC of first capacitor C1 connects
It connects, the second end of first capacitor C1 is connect with power ground.
Second switch module 02 includes the second field-effect tube M2, third transistor Q3, fuse F1, the 7th resistance R7, the 8th
Resistance R8 and the 9th resistance R9；
The drain electrode of second field-effect tube M2 is connect with the first end of fuse F1, and the source electrode of the second field-effect tube M2 is opened for second
Close the output end of module 02, the current collection of the grid of the second field-effect tube M2 and the first end of the 9th resistance R9 and third transistor Q3
Pole connection, the base stage of third transistor Q3 are connect with the first end of the first end of the 7th resistance R7 and the 8th resistance R8, the 7th electricity
The second end for hindering R7 is the control terminal of second switch module 02, the second end of the emitter of third transistor Q3 and the 8th resistance R8
It is connected to power ground altogether, the second end of the 9th resistance R9 is connect with the first power supply VAA.
Second switch module 02 can also include diode D1, the second capacitor C2 and the tenth resistance R10；Diode D1's
The first end of cathode and the second capacitor C2 are connect with the input terminal of second switch module 02, the anode of diode D1, the second electricity
The first end of the second end and the tenth resistance R10 of holding C2 is connect with the input terminal of second switch module 02, the tenth resistance R10
Second end connect with power ground.
Third switch module 03 includes third field-effect tube M3, eleventh resistor R11 and twelfth resistor R12；
The drain electrode of third field-effect tube M3 is the input terminal of third switch module 03, the grid of third field-effect tube M3 and the
The first end of 11 resistance R11 is connected with the first end of twelfth resistor R12, and the second end of eleventh resistor R11 is opened for third
The control terminal of module 03 is closed, the source electrode of third field-effect tube M3 is connected with the second end of twelfth resistor R12.
It is described further below in conjunction with working principle to shown in Fig. 2:
In the specific implementation process, when controlling voltage Ctrl greater than third predeterminated voltage, the second triode Q2 conducting, from
And the first triode Q1 and the first field-effect tube M1 conducting, the first field-effect tube M1 are connected to the anode of input power；Third field effect
Should pipe M3 be connected and be connected to the cathode and power ground of motor 04；And third transistor Q3 is connected, so that the second field-effect tube M2 is cut
Only；The circuit being made up of input power, the first field-effect tube M1, motor 04, third field-effect tube M3 and power ground, motor
04 works normally.
When controlling voltage Ctrl greater than the second predeterminated voltage and control voltage Ctrl is less than third predeterminated voltage, third field
Effect pipe M3 conducting and the cathode and power ground for being connected to motor 04；Second triode Q2 cut-off, so that the first field-effect tube M1 is cut
Only；And third transistor Q3 is connected, so that the second field-effect tube M2 ends；The negative of motor 04 is connected to by third field-effect tube M3
Pole and power ground release the high current of shutdown moment, prevent motor 04 caused by the high current of shutdown moment from damaging.
When controlling voltage Ctrl greater than the first predeterminated voltage and control voltage Ctrl is less than the second predeterminated voltage, first
Effect pipe M1 and third field-effect tube M3 are turned off；Third transistor Q3 conducting, so that the second field-effect tube M2 ends.
When controlling voltage Ctrl less than the first predeterminated voltage, the second triode Q2 cut-off, thus the first field-effect tube M1
Cut-off；Third field-effect tube M3 cut-off；Third transistor Q3 cut-off, thus the second field-effect tube M2 connection motor 04 anode and
The cathode of motor 04, third switch module 03 consumes the energy of electric current caused by inertia motion when motor 04 shuts down, to mention
The high service life of motor 04, and stop motor quickly in time, braking action is played, motor motion control precision is improved.The
It include fuse F1 in two switch modules 02, it is when motor 04 shuts down, electric current caused by inertia motion is greater than current threshold or each
When electric current caused by kind failure (such as electric motor short circuit) is greater than current threshold, fuse F1 fusing.To further prevent high current
The component damages such as caused motor 04, field-effect tube and triode, improve the service life of motor 04 and component.
The present invention also protects a kind of printer, and the printer includes motor and such as above-mentioned motor control protective device.
The present invention also protects a kind of reader, and the reader includes motor and such as above-mentioned motor control protective device.
Wherein, reader refers to the scanner with printing function.
For example, reader first scans slip and identifies bet number in lottery ticket sales, printed by print module color
Ticket.In lottery rewarding or log off procedure, reader identifies ticket information by scanning lottery ticket, then prize is printed on lottery ticket
Or the relevant information nullified, such as " prize ", " canceled ".
The embodiment of the present invention is being connected to the positive and motor of input power just according to control voltage by first switch module
Pole；Second switch module is according to the anode of control voltage connection motor and the cathode of motor；Third switch module is according to control electricity
The cathode and power ground of pressure connection motor；Wherein, the threshold voltage of second switch module conducting is the first predeterminated voltage, and third is opened
The threshold voltage for closing module conducting is the second predeterminated voltage, and the threshold voltage of first switch module conducting is third predeterminated voltage；
Third predeterminated voltage is greater than the second predeterminated voltage, and the second predeterminated voltage is greater than the first predeterminated voltage, since shutdown moment successively connects
Logical third switch module and second switch module, realize the high current for moment of shutting down being discharged into power ground, and open in circuit
When dynamic, module is sequentially started switch according to voltage levels, it is therefore prevented that the instantaneous short-circuit as caused by device inherent parameters problem is asked
Topic, improves the service life of motor；And motor can be made quickly to stop during shutdown, braking action is played, motor movement control is improved
Precision processed.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (8)
1. a kind of motor control protective device, the motor control protective device is connected to motor, which is characterized in that the motor
Control protective unit accesses externally input control voltage, and includes:
It is connect with the anode of the motor, the anode and the motor for being connected to input power according to the control voltage are just
The first switch module of pole；
Connect with the first switch module and the motor, for according to it is described control voltage be connected to the motor anode and
The second switch module of the cathode of the motor；And
Connect with the second switch module and the motor, for according to it is described control voltage be connected to the motor cathode and
The third switch module of power ground；
Wherein, the threshold voltage of the second switch module conducting is the first predeterminated voltage, the third switch module conducting
Threshold voltage is the second predeterminated voltage, and the threshold voltage of the first switch module conducting is third predeterminated voltage；The third
Predeterminated voltage is greater than second predeterminated voltage, and second predeterminated voltage is greater than first predeterminated voltage.
2. motor control protective device as described in claim 1, which is characterized in that when the control voltage is greater than the third
When predeterminated voltage, the anode of the first switch module connection input power, the third switch module is connected to the motor
Cathode and power ground, and the second switch module is ended, the motor works normally；
When the control voltage is greater than second predeterminated voltage and the control voltage is less than the third predeterminated voltage, institute
State cathode and power ground that third switch module is connected to the motor, and the first switch module and the second switch module
Cut-off；
When the control voltage is greater than first predeterminated voltage and the control voltage is less than second predeterminated voltage, institute
First switch module, the second switch module and the third switch module is stated to be turned off；
When the control voltage be less than first predeterminated voltage when, the second switch module be connected to the motor anode and
The cathode of the motor, the first switch module and third switch module cut-off, the second switch module consume institute
The energy of electric current caused by inertia motion when stating motor shutdown.
3. motor control protective device as described in claim 1, which is characterized in that include molten in the second switch module
Silk, when the electric current is greater than current threshold, the fuse failure.
4. motor control protective device as claimed in claim 3, which is characterized in that the second switch module further includes second
Field-effect tube, third transistor, the 7th resistance, the 8th resistance and the 9th resistance；
The drain electrode of second field-effect tube is connect with the first end of the fuse, and the source electrode of second field-effect tube is described
The output end of second switch module, the first end and the described 3rd 3 of the grid of second field-effect tube and the 9th resistance
The collector of pole pipe connects, and the of the first end and the 8th resistance of the base stage of the third transistor and the 7th resistance
One end connection, the second end of the 7th resistance are the control terminal of the second switch module, the transmitting of the third transistor
The second end of pole and the 8th resistance is connected to power ground altogether, and the second end of the 9th resistance is connect with the first power supply.
5. motor control protective device as described in claim 1, which is characterized in that the third switch module includes third field
Effect pipe, eleventh resistor and twelfth resistor；
The drain electrode of the third field-effect tube be the third switch module input terminal, the grid of the third field-effect tube with
The first end of the eleventh resistor is connected with the first end of the twelfth resistor, and the second end of the eleventh resistor is institute
The control terminal of third switch module is stated, the source electrode of the third field-effect tube is connected with the second end of the twelfth resistor.
6. motor control protective device as described in claim 1, which is characterized in that the first switch module includes first
Effect pipe, the first triode, the second triode, first resistor, second resistance, 3rd resistor, the 4th resistance, the 5th resistance and
6th resistance；
The drain electrode of first field-effect tube be the first switch module output end, the source electrode of first field-effect tube with
The first end of the 3rd resistor, the first end of the second resistance, the connection of the first end of the first resistor, described first
The grid of effect pipe and the second end of the 3rd resistor, the first end of the 6th resistance, first triode current collection
Pole connection, the emitter of first triode and the second end of the first resistor are the input of the first switch module
End, the base stage of first triode are connect with the second end of the second resistance, the collector of second diode and institute
State the second end connection of the 6th resistance, the first end and the 5th electricity of the base stage of second diode and the 4th resistance
The first end of resistance connects, and the second end of the 4th resistance is the control terminal of the first switch module, second diode
Emitter and the second end of the 5th resistance be connected to power ground altogether.
7. a kind of printer, which is characterized in that the printer includes motor and as described in claim 1 to 6 any one
Motor control protective device.
8. a kind of reader, which is characterized in that the reader includes motor and as described in claim 1 to 6 any one
Motor control protective device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090111.0A CN109149522B (en) | 2018-09-18 | 2018-09-18 | Motor control protection device, printer and reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811090111.0A CN109149522B (en) | 2018-09-18 | 2018-09-18 | Motor control protection device, printer and reader |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109149522A true CN109149522A (en) | 2019-01-04 |
| CN109149522B CN109149522B (en) | 2023-11-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811090111.0A Active CN109149522B (en) | 2018-09-18 | 2018-09-18 | Motor control protection device, printer and reader |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
| CN206977019U (en) * | 2017-07-31 | 2018-02-06 | 深圳市汉森软件有限公司 | Printer short-circuit protection circuit and printer |
| CN207135016U (en) * | 2017-08-14 | 2018-03-23 | 奥佳华智能健康科技集团股份有限公司 | A kind of motor-drive circuit |
| CN107895978A (en) * | 2017-11-20 | 2018-04-10 | 中山市电赢科技有限公司 | A kind of good DC charger structure of applicability |
| WO2018076294A1 (en) * | 2016-10-28 | 2018-05-03 | 海能达通信股份有限公司 | Reverse connection and current backflow prevention circuit |
| CN209233455U (en) * | 2018-09-18 | 2019-08-09 | 深圳市思乐数据技术有限公司 | A kind of motor control protective device and printer, reader |
-
2018
- 2018-09-18 CN CN201811090111.0A patent/CN109149522B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106341035A (en) * | 2016-10-21 | 2017-01-18 | 无锡爱睿芯电子有限公司 | Power switch module |
| WO2018076294A1 (en) * | 2016-10-28 | 2018-05-03 | 海能达通信股份有限公司 | Reverse connection and current backflow prevention circuit |
| CN206977019U (en) * | 2017-07-31 | 2018-02-06 | 深圳市汉森软件有限公司 | Printer short-circuit protection circuit and printer |
| CN207135016U (en) * | 2017-08-14 | 2018-03-23 | 奥佳华智能健康科技集团股份有限公司 | A kind of motor-drive circuit |
| CN107895978A (en) * | 2017-11-20 | 2018-04-10 | 中山市电赢科技有限公司 | A kind of good DC charger structure of applicability |
| CN209233455U (en) * | 2018-09-18 | 2019-08-09 | 深圳市思乐数据技术有限公司 | A kind of motor control protective device and printer, reader |
Also Published As
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| CN109149522B (en) | 2023-11-24 |
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