CN217074278U - Windscreen wiper intermittent control device based on MCU control and windscreen wiper control system - Google Patents
Windscreen wiper intermittent control device based on MCU control and windscreen wiper control system Download PDFInfo
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- CN217074278U CN217074278U CN202221128924.6U CN202221128924U CN217074278U CN 217074278 U CN217074278 U CN 217074278U CN 202221128924 U CN202221128924 U CN 202221128924U CN 217074278 U CN217074278 U CN 217074278U
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- 238000001514 detection method Methods 0.000 claims abstract description 29
- 239000003990 capacitor Substances 0.000 claims description 90
- 238000005406 washing Methods 0.000 claims description 37
- 230000000087 stabilizing effect Effects 0.000 claims description 18
- 238000010586 diagram Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 244000208734 Pisonia aculeata Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
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Abstract
The utility model provides a windscreen wiper intermittent type controlling means and windscreen wiper control system based on MCU control, controlling means includes: the device comprises an intermittent input circuit, a wiper driving circuit, an MCU control module and a return detection circuit; the MCU control module is internally provided with a timing unit and used for sending an enabling signal of a first time interval to the input end of the wiper driving circuit when receiving an intermittent input signal, and sending the enabling signal of the first time interval to the input end of the wiper driving circuit after a second time interval when receiving a return detection signal, so that the accurate control of the action time of a wiper motor is realized. The utility model discloses an MCU control module is inside from the timing unit who takes among the intermittent control device, sends the enabling signal of different time intervals to windscreen wiper drive circuit, has realized the accurate control to windscreen wiper motor action time, has solved the unsafe technical problem of windscreen wiper motor intermittent time.
Description
Technical Field
The utility model relates to a car windscreen wiper control technical field especially relates to a windscreen wiper controlling means and windscreen wiper control system based on MCU control.
Background
Among traditional windscreen wiper intermittent control device, to the intermittent control of windscreen wiper motor, washing motor often be through the mode to electric capacity charge discharge, the actuation time of control relay reaches the control to the action time of windscreen wiper motor then, and is concrete: when the capacitor is charged to a certain threshold value, the relay is powered on, and the wiper motor acts; when the capacitor discharges to a certain threshold value, the relay is powered off, and the wiper motor stops acting.
The method has many disadvantages, such as difficult realization of precise control of the wiper motor intermittent time, inaccurate intermittent time and spraying time caused by errors of the discharging time of the capacitor, and inconvenience for automobile users.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the wiper control device and the wiper control system based on MCU control solve the technical problem that the wiper motor has inaccurate intermittent time.
In one embodiment, there is provided a wiper intermittent control device based on MCU control, the control device comprising:
the device comprises an intermittent input circuit, a wiper driving circuit, an MCU control module and a return detection circuit;
the intermittent input circuit is connected with the MCU control module and is used for sending an intermittent input signal to the MCU control module;
the input end of the wiper driving circuit is connected with the MCU control module, the first end of the wiper driving circuit is connected with a low-speed line of a wiper motor when in use, the second end of the wiper driving circuit is connected with a power supply, the third end of the wiper driving circuit is connected with a return line of the wiper motor when in use, and the wiper driving circuit is used for controlling the low-speed action of the wiper motor when receiving an enabling signal sent by the MCU control module;
the input end of the return detection circuit is connected with a return line of a wiper motor when in use, and the output end of the return detection circuit is connected with the MCU control module and used for converting the position state of the wiper into a return detection signal and sending the return detection signal to the MCU control module;
the MCU control module internally comprises a timing unit and is used for sending an enabling signal of a first time interval to the input end of the wiper driving circuit when receiving an intermittent input signal, and sending the enabling signal of the first time interval to the input end of the wiper driving circuit after a second time interval when receiving a return detection signal, so that the accurate control of the action duration of the wiper motor is realized.
In one embodiment, the control device further comprises a linear voltage stabilizing circuit connected with the MCU control module, wherein the linear voltage stabilizing circuit comprises a first diode, a second diode, a first resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a voltage stabilizing chip;
the anode of the first diode is connected with a power supply, the cathode of the first diode is connected with the first end of the first resistor, the first end of the second capacitor and the first end of the fourth capacitor are respectively connected with the anode of the second diode, the cathode of the second diode is connected with the second end of the first resistor, the second ends of the second capacitor, the fourth capacitor and the first resistor are respectively connected with the input end of the voltage stabilizing chip, the output end of the voltage stabilizing chip is respectively connected with the second end of the first capacitor and the second end of the third capacitor, and the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor, the first end of the fourth capacitor and the grounding end of the voltage stabilizing chip are respectively connected with a ground wire.
In one embodiment, the intermittent input circuit comprises a third diode, a second resistor, a third resistor and a fifth capacitor;
the first end of the fifth capacitor is grounded, and the second end of the fifth capacitor is respectively connected with the anode of the third diode, the second end of the third resistor and the second end of the second resistor.
In one embodiment, the control device further comprises a washing input circuit, wherein the washing input circuit is respectively connected with a washing gear of the combination switch and the MCU control module when in use, and is configured to send a washing input signal to the MCU control module, so that the MCU control module sends an enable signal of a first time interval to the input terminal of the wiper driving circuit when receiving the washing input signal, and sends an enable signal of a third time interval to the input terminal of the wiper driving circuit once after the washing input signal disappears.
In one embodiment, the wash input circuit includes a fourth diode, a fourth resistor, a fifth resistor, and a sixth capacitor;
the first end of the sixth capacitor is grounded, and the second end of the sixth capacitor is respectively connected with the anode of the fourth diode, the second end of the fifth resistor and the second end of the fourth resistor.
In one embodiment, the wiper drive circuit includes a first triode, sixth and seventh resistors, and a wiper intermittent relay;
the MCU control module is connected with a first end of the sixth resistor, second ends of the sixth resistor and the seventh resistor are connected with a base electrode of the first triode, a collector electrode of the first triode is connected with a first end of a coil of the intermittent relay, and an emitter electrode of the first triode and a first end of the seventh resistor are grounded; the second end of the coil of the intermittent relay is connected with a motor power supply, the first end of the switch of the intermittent relay is connected with a low-speed line of the wiper motor when in use, and the third end of the switch of the intermittent relay is connected with a return line of the wiper motor when in use.
In one embodiment, the return detection circuit includes a second transistor, an eighth resistor, a ninth resistor, a tenth resistor, a fifth diode, a seventh capacitor, and an eighth capacitor;
the base electrode of the second triode is respectively connected with the second end of the ninth resistor and the first end of the eighth resistor, the emitting electrode of the second triode is respectively connected with the second end of the eighth resistor and the power supply, the collecting electrode of the second triode is respectively connected with the second end of the tenth resistor, the second end of the eighth capacitor and the MCU control module, the first end of the eighth capacitor and the first end of the tenth resistor are grounded, the first end of the ninth resistor is respectively connected with the second end of the seventh capacitor and the anode of the fifth diode, and the first end of the seventh capacitor is grounded.
In one embodiment, the control device further comprises a low-speed input circuit, and the low-speed input circuit is connected with the low-speed gear of the combination switch and the MCU control module respectively when in use, and is used for sending a low-speed input signal to the MCU control module, so that the MCU control module continuously sends an enable signal to the input end of the wiper driving circuit when receiving the low-speed input signal.
In one embodiment, the low speed input circuit comprises a sixth diode, an eleventh resistor, a twelfth resistor and a ninth capacitor;
the first end of the ninth capacitor is grounded, and the second end of the ninth capacitor is respectively connected with the anode of the sixth diode, the second end of the twelfth resistor and the second end of the eleventh resistor.
In a second aspect, in one embodiment, there is provided a wiper control system comprising a wiper intermittent control device, a wiper motor, a washing motor, a wiper low-speed relay, a wiper high-speed relay, and a wiper combination switch as described in any one of the above;
the wiper switch comprises a low-speed input gear, a high-speed input gear, an intermittent input gear and a washing input gear;
the wiper motor comprises a low-speed line, a high-speed line and a return line;
the first end of a coil of the wiper high-speed relay is connected with a high-speed gear of a wiper switch, the second end of the coil of the wiper high-speed relay is connected with a first power supply, the first end of the switch of the wiper high-speed relay is connected with a high-speed wire of a wiper motor, and the second end of the switch of the wiper high-speed relay is connected with a second power supply;
the first end of a coil of the wiper low-speed relay is connected with the first end of a coil of the wiper high-speed relay, the second end of the coil of the wiper low-speed relay is connected with a first power supply, the first end of a switch of the wiper low-speed relay is connected with the first output end of the wiper intermittent control device, and the third end of the switch of the wiper low-speed relay is connected with a low-speed wire of the wiper motor;
the first end of the washing motor is connected with a washing input gear of the wiper combined switch, and the second end of the washing motor is respectively connected with the second output end of the wiper intermittent control device and the third power supply.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. when receiving an input signal of an input circuit, the MCU control module of the windscreen wiper intermittent control device runs the timing unit and sends enabling signals with different time intervals to the windscreen wiper driving circuit, and an intermittent relay in the windscreen wiper driving circuit is closed when receiving the enabling signals, so that the windscreen wiper motor is controlled to realize the action of corresponding time, and the technical problem that the intermittent time of the windscreen wiper motor is inaccurate is solved.
2. The low-speed line of the wiper motor is connected with the return line of the wiper motor through the intermittent relay, when the switch of the intermittent relay is switched off, the return line is connected with the low-speed line, the wiper motor completes one action, and the return self-locking function of the wiper motor is realized.
Drawings
Fig. 1 is a circuit structure diagram of a wiper intermittent control device in an embodiment of the present invention.
Fig. 2 is a circuit diagram of a linear voltage stabilizing circuit according to an embodiment of the present invention.
Fig. 3 is a circuit diagram of an intermittent input circuit in an embodiment of the present invention.
Fig. 4 is a circuit diagram of a washing input circuit according to an embodiment of the present invention.
Fig. 5 is a circuit diagram of the wiper driving circuit and the return detection circuit in an embodiment of the present invention.
Fig. 6 is a circuit diagram of a low-speed input circuit according to an embodiment of the present invention.
Fig. 7 is a circuit diagram of a wiper control system according to another embodiment of the present invention.
Detailed Description
The technical solution of the present invention will be further explained with reference to the accompanying drawings and embodiments.
First aspect of the invention
As shown in fig. 1, the embodiment of the utility model provides a windscreen wiper intermittent type controlling means based on MCU control is proposed, controlling means includes:
the device comprises an intermittent input circuit, a wiper driving circuit, an MCU control module and a return detection circuit;
the intermittent input circuit is connected with the MCU control module and used for sending an intermittent input signal to the MCU control module;
the input end of the wiper driving circuit is connected with the MCU control module, the first end of the wiper driving circuit is connected with a low-speed line of a wiper motor when in use, the second end of the wiper driving circuit is connected with a power supply, the third end of the wiper driving circuit is connected with a return line of the wiper motor when in use, and the wiper driving circuit is used for controlling the low-speed action of the wiper motor when receiving an enabling signal sent by the MCU control module;
the input end of the return detection circuit is connected with a return line of a wiper motor when in use, and the output end of the return detection circuit is connected with the MCU control module and used for converting the position state of the wiper into a return detection signal and sending the return detection signal to the MCU control module;
the MCU control module internally comprises a timing unit and is used for sending an enabling signal of a first time interval to the input end of the wiper driving circuit when receiving an intermittent input signal, and sending the enabling signal of the first time interval to the input end of the wiper driving circuit after a second time interval when receiving a return detection signal, so that the accurate control of the action duration of the wiper motor is realized.
In the above embodiment, when receiving an input signal from an input circuit, the MCU control module of the wiper intermittent control apparatus operates its own timing unit and sends enable signals at different time intervals to the wiper driving circuit, and an intermittent relay in the wiper driving circuit is closed when receiving the enable signal, thereby controlling the wiper motor to implement a corresponding time action, and solving the technical problem of inaccurate wiper motor intermittent time.
In one embodiment, as shown in fig. 2, the control apparatus further includes a linear voltage regulator circuit connected to the MCU control module, where the linear voltage regulator circuit includes a first diode D1, a second diode D2, a first resistor R1, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, and a voltage regulation chip;
an anode of the first diode D1 is connected to a power supply, a cathode of the first diode D1 is connected to a first end of a first resistor R1, a first end of the second capacitor C2 and a first end of the fourth capacitor C4 are respectively connected to an anode of the second diode D2, a cathode of the second diode D2 is connected to a second end of the first resistor R1, second ends of the second capacitor C2, the fourth capacitor C4 and the first resistor R1 are respectively connected to an input end of the voltage stabilizing chip, an output end of the voltage stabilizing chip is respectively connected to a second end of the first capacitor C1 and a second end of the third capacitor C3, and a first end of the first capacitor C1, a first end of the second capacitor C2, a first end of the third capacitor C3, a first end of the fourth capacitor C4 and a ground end of the voltage stabilizing chip are respectively connected to a ground.
In the above embodiment, by introducing the linear voltage stabilizing circuit, the voltage output of the intermittent control device can be reduced, and the function of stabilizing the current and voltage is achieved.
In one embodiment, as shown in fig. 3, the intermittent input circuit includes a third diode D3, a second resistor R2, a third resistor R3, and a fifth capacitor C5;
a first end of the fifth capacitor C5 is grounded, and a second end of the fifth capacitor C5 is connected to an anode of the third diode D3, a second end of the third resistor R3, and a second end of the second resistor R2, respectively.
In one embodiment, the control device further comprises a washing input circuit, wherein the washing input circuit is respectively connected with a washing gear of the combination switch and the MCU control module when in use, and is configured to send a washing input signal to the MCU control module, so that the MCU control module sends an enable signal of a first time interval to the input terminal of the wiper driving circuit when receiving the washing input signal, and sends an enable signal of a third time interval to the input terminal of the wiper driving circuit once after the washing input signal disappears.
In the embodiment, when the MCU control module receives the washing input signal, the MCU control module sends the enabling signals of different time intervals to the wiper driving circuit, so that the accurate control of the action time of the wiper motor is realized, and the technical problem of inaccurate spraying time of the wiper motor is solved.
In one embodiment, as shown in fig. 4, the washing input circuit includes a fourth diode D4, a fourth resistor R4, a fifth resistor R5, and a sixth capacitor C6;
a first end of the sixth capacitor C6 is grounded, and a second end of the sixth capacitor C6 is connected to an anode of the fourth diode D4, a second end of the fifth resistor R5, and a second end of the fourth resistor R4, respectively.
In one embodiment, as shown in fig. 5, the wiper driving circuit includes a first transistor Q1, a sixth resistor R6, a seventh resistor R7, and a wiper intermittent relay;
the MCU control module is connected with a first end of a sixth resistor R6, second ends of the sixth resistor R6 and a seventh resistor R7 are connected with a base electrode of a first triode Q1, a collector electrode of the first triode Q1 is connected with a first end of a coil of the intermittent relay, and an emitter electrode of the first triode Q1 and a first end of the seventh resistor R7 are grounded; the second end of the coil of the intermittent relay is connected with a motor power supply, the first end of the switch of the intermittent relay is connected with a low-speed line of the wiper motor when in use, and the third end of the switch of the intermittent relay is connected with a return line of the wiper motor when in use.
In the above embodiment, when the MCU control module sends an enable signal to the wiper driving circuit, the switch of the wiper intermittent relay in the wiper driving circuit is closed, the motor power supplies power to the low gear of the wiper motor, and the wiper motor operates at low speed; when the MCU control module stops sending out an enabling signal, a switch of a wiper intermittent relay in the wiper driving circuit is disconnected, a low-speed line of a wiper motor is connected with a return line of the wiper motor, the wiper motor stops acting after low-speed action is performed once, and the return self-locking function of the wiper motor is realized.
In one embodiment, as shown in fig. 5, the pull-back detection circuit includes a second transistor Q2, an eighth resistor R8, a ninth resistor R9, a tenth resistor R10, a fifth diode D5, a seventh capacitor C7, and an eighth capacitor C8;
a base of the second triode Q2 is connected to the second end of the ninth resistor R9 and the first end of the eighth resistor R8, an emitter of the second triode Q2 is connected to the second end of the eighth resistor R8 and the power supply, a collector of the second triode Q2 is connected to the second end of the tenth resistor R10, the second end of the eighth capacitor C8 and the MCU control module, a first end of the eighth capacitor C8 and a first end of the tenth resistor R10 are grounded, a first end of the ninth resistor R9 is connected to the second end of the seventh capacitor C7 and an anode of the fifth diode D5, and a first end of the seventh capacitor C7 is grounded.
In the above embodiment, after the wiper motor returns to the self-locking position, the low-speed line of the wiper motor and the return line of the wiper motor are disconnected, the wiper return detection circuit sends a return detection signal to the MCU control module, and the MCU control module determines whether the wiper motor returns to the self-locking position according to the return detection signal.
In one embodiment, the control device further comprises a low-speed input circuit, and the low-speed input circuit is connected with a low-speed gear of the combination switch and the MCU control module respectively when in use, and is used for sending a low-speed input signal to the MCU control module, so that the MCU control module continuously sends an enable signal to the input end of the wiper driving circuit when receiving the low-speed input signal.
In one embodiment, as shown in fig. 6, the low speed input circuit includes a sixth diode D6, an eleventh resistor R11, a twelfth resistor R12, and a ninth capacitor C9;
a first end of the ninth capacitor C9 is grounded, and a second end of the ninth capacitor C9 is connected to an anode of the sixth diode D6, a second end of the twelfth resistor R12, and a second end of the eleventh resistor R11, respectively.
Second aspect of the invention
In one embodiment, as shown in fig. 7, there is provided a wiper control system comprising a wiper intermittent control device, a wiper motor, a washing motor, a wiper low-speed relay, a wiper high-speed relay, and a wiper combination switch as described in any one of the above;
the wiper switch comprises a low-speed input gear, a high-speed input gear, an intermittent input gear and a washing input gear;
the wiper motor comprises a low-speed line, a high-speed line and a return line;
the first end of a coil of the wiper high-speed relay is connected with a high-speed gear of a wiper switch, the second end of the coil of the wiper high-speed relay is connected with a first power supply, the first end of the switch of the wiper high-speed relay is connected with a high-speed wire of a wiper motor, and the second end of the switch of the wiper high-speed relay is connected with a second power supply;
the first end of a coil of the wiper low-speed relay is connected with the first end of a coil of the wiper high-speed relay, the second end of the coil of the wiper low-speed relay is connected with a first power supply, the first end of a switch of the wiper low-speed relay is connected with the first output end of the wiper intermittent control device, and the third end of the switch of the wiper low-speed relay is connected with a low-speed wire of the wiper motor;
in the above embodiment, when the wiper combination switch is in the intermittent gear, the MCU control module drives the wiper intermittent relay in fig. 5 to open after attracting for 1s, and simultaneously detects whether the wiper returns through the return detection circuit, the MCU control module controls the relay to attract for 1s again after detecting the return detection signal for 4s, and then the above process is circulated, so that the wiper motor operates at a low speed according to the intermittent time of 4 s;
when the wiper combination switch is switched from the intermittent gear to the closed gear, the MCU control module stops outputting an enabling signal, the low-speed gear of the wiper motor and the return line of the wiper motor are switched on through the wiper intermittent relay and the wiper low-speed relay, and the wiper motor returns and is self-locked.
In the above embodiment, when the wiper combination switch is in the low gear, the MCU control module drives the wiper intermittent relay in fig. 5 to be always closed, and the motor power supply continuously supplies power to the low-speed line of the wiper motor, so that the wiper motor always operates at a low speed;
when the wiper combination switch is switched from a low gear to a closed gear, the MCU control module stops outputting an enabling signal, the low gear of the wiper motor and a return line of the wiper motor are switched on through the wiper intermittent relay and the wiper low-speed relay, and the wiper motor returns to be self-locked.
In the above embodiment, when the wiper combination switch is in the washing gear, the MCU control module drives the wiper intermittent relay in fig. 5 to close, the wiper motor operates at low speed, and the washing motor rotates, and the wiper arm performs reciprocating circulation to wipe water at low speed on the glass of the vehicle;
when the wiper combination switch is switched from a washing gear to an OFF gear, the MCU control module continuously drives the wiper intermittent relay in the FIG. 5 according to a suction contract of 3s, so that the wiper arm stops when reaching the initial position after 3 cycles of reciprocating wiping on the glass.
In one embodiment, when the wiper combination switch is in the high-speed water-wiping gear, the wiper high-speed relay and the wiper low-speed relay are simultaneously attracted in fig. 7, so that the wiper motor always works at a high speed;
when the wiper combined switch is switched from the intermittent wiping gear to the closing gear, the wiper high-speed relay and the wiper low-speed relay are not attracted any more, the low-speed gear of the wiper motor and the return line of the wiper motor are switched on through the wiper intermittent relay and the wiper low-speed relay, and the wiper motor returns to be self-locked.
Finally, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the present invention can be modified or replaced by other means without departing from the spirit and scope of the present invention, which should be construed as limited only by the appended claims.
Claims (10)
1. The utility model provides a windscreen wiper intermittent type controlling means based on MCU control which characterized in that, controlling means includes:
the device comprises an intermittent input circuit, a wiper driving circuit, an MCU control module and a return detection circuit;
the intermittent input circuit is connected with the MCU control module and is used for sending an intermittent input signal to the MCU control module;
the input end of the wiper driving circuit is connected with the MCU control module, the first end of the wiper driving circuit is connected with a low-speed gear of a wiper motor when in use, the second end of the wiper driving circuit is connected with a power supply, the third end of the wiper driving circuit is connected with a return line of the wiper motor when in use, and the wiper driving circuit is used for controlling the low-speed action of the wiper motor when receiving an enabling signal sent by the MCU control module;
the input end of the return detection circuit is connected with a return line of a wiper motor when in use, and the output end of the return detection circuit is connected with the MCU control module and used for converting the position state of the wiper into a return detection signal and sending the return detection signal to the MCU control module;
the MCU control module internally comprises a timing unit and is used for sending an enabling signal of a first time interval to the input end of the wiper driving circuit when receiving an intermittent input signal, and sending the enabling signal of the first time interval to the input end of the wiper driving circuit after a second time interval when receiving a return detection signal, so that the accurate control of the action duration of the wiper motor is realized.
2. The wiper intermittent control device based on the MCU control as claimed in claim 1, wherein the control device further comprises a linear voltage stabilizing circuit connected with the MCU control module, the linear voltage stabilizing circuit comprises a first diode, a second diode, a first resistor, a first capacitor, a second capacitor, a third capacitor, a fourth capacitor and a voltage stabilizing chip;
the anode of the first diode is connected with a power supply, the cathode of the first diode is connected with the first end of the first resistor, the first end of the second capacitor and the first end of the fourth capacitor are respectively connected with the anode of the second diode, the cathode of the second diode is connected with the second end of the first resistor, the second ends of the second capacitor, the fourth capacitor and the first resistor are respectively connected with the input end of the voltage stabilizing chip, the output end of the voltage stabilizing chip is respectively connected with the second end of the first capacitor and the second end of the third capacitor, and the first end of the first capacitor, the first end of the second capacitor, the first end of the third capacitor, the first end of the fourth capacitor and the grounding end of the voltage stabilizing chip are respectively connected with a ground wire.
3. The wiper intermittent control device based on the MCU control as claimed in claim 1, wherein:
the intermittent input circuit comprises a third diode, a second resistor, a third resistor and a fifth capacitor;
the first end of the fifth capacitor is grounded, and the second end of the fifth capacitor is respectively connected with the anode of the third diode, the second end of the third resistor and the second end of the second resistor.
4. The MCU control-based wiper intermittent control device of claim 1, wherein the control device further comprises:
and the washing input circuit is respectively connected with a washing gear of the combined switch and the MCU control module during use and is used for sending a washing input signal to the MCU control module, so that the MCU control module sends an enabling signal to the input end of the wiper driving circuit when receiving the washing input signal, and sends an enabling signal of a third time interval to the input end of the wiper driving circuit after the washing input signal disappears.
5. The wiper intermittent control device based on MCU control as claimed in claim 4, characterized in that:
the washing input circuit comprises a fourth diode, a fourth resistor, a fifth resistor and a sixth capacitor;
the first end of the sixth capacitor is grounded, and the second end of the sixth capacitor is respectively connected with the anode of the fourth diode, the second end of the fifth resistor and the second end of the fourth resistor.
6. The wiper intermittent control device based on the MCU control as claimed in claim 1, wherein:
the wiper driving circuit comprises a first triode, a sixth resistor, a seventh resistor and a wiper intermittent relay;
the MCU control module is connected with the first end of the sixth resistor, the second ends of the sixth resistor and the seventh resistor are connected with the base electrode of the first triode, the collector electrode of the first triode is connected with the first end of the coil of the intermittent relay, and the emitter electrode of the first triode and the first end of the seventh resistor are grounded; the second end of the coil of the intermittent relay is connected with a motor power supply, the first end of the switch of the intermittent relay is connected with the low-speed gear of the wiper motor when in use, and the third end of the switch of the intermittent relay is connected with the return gear of the wiper motor when in use.
7. The wiper intermittent control device based on the MCU control as claimed in claim 1, wherein: the return detection circuit comprises a second triode, an eighth resistor, a ninth resistor, a tenth resistor, a fifth diode, a seventh capacitor and an eighth capacitor;
the base electrode of the second triode is respectively connected with the second end of the ninth resistor and the first end of the eighth resistor, the emitter electrode of the second triode is respectively connected with the second end of the eighth resistor and the power supply, the collector electrode of the second triode is respectively connected with the second end of the tenth resistor, the second end of the eighth capacitor and the MCU control module, the first end of the eighth capacitor and the first end of the tenth resistor are grounded, the first end of the ninth resistor is respectively connected with the second end of the seventh capacitor and the anode of the fifth diode, and the first end of the seventh capacitor is grounded.
8. The wiper intermittent control device based on the MCU control as claimed in claim 1, wherein: the control device further includes:
and the low-speed input circuit is respectively connected with a low-speed gear of the combination switch and the MCU control module when in use and is used for sending a low-speed input signal to the MCU control module, so that the MCU control module continuously sends an enabling signal to the input end of the wiper driving circuit when receiving the low-speed input signal.
9. The wiper intermittent control device based on the MCU control as claimed in claim 8, wherein:
the low-speed input circuit comprises a sixth diode, an eleventh resistor, a twelfth resistor and a ninth capacitor;
the first end of the ninth capacitor is grounded, and the second end of the ninth capacitor is respectively connected with the anode of the sixth diode, the second end of the twelfth resistor and the second end of the eleventh resistor.
10. A wiper control system comprising the wiper intermittent control device, the wiper motor, the washing motor, the wiper low-speed relay, the wiper high-speed relay, and the wiper combination switch according to any one of claims 1 to 9;
the wiper combined switch comprises a low-speed input gear, a high-speed input gear, an intermittent input gear and a washing input gear;
the wiper motor comprises a low-speed line, a high-speed line and a return line;
the first end of a coil of the wiper high-speed relay is connected with a high-speed gear of a wiper combination switch, the second end of the coil of the wiper high-speed relay is connected with a first power supply, the first end of the switch of the wiper high-speed relay is connected with a high-speed wire of a wiper motor, and the second end of the switch of the wiper high-speed relay is connected with a second power supply;
the first end of a coil of the wiper low-speed relay is connected with the first end of a coil of the wiper high-speed relay, the second end of the coil of the wiper low-speed relay is connected with a first power supply, the first end of a switch of the wiper low-speed relay is connected with the first output end of the wiper intermittent control device, and the third end of the switch of the wiper low-speed relay is connected with a low-speed gear of the wiper motor;
the first end of the washing motor is connected with the washing input gear of the wiper combined switch, and the second end of the washing motor is respectively connected with the second output end of the wiper intermittent control device and the third power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221128924.6U CN217074278U (en) | 2022-05-11 | 2022-05-11 | Windscreen wiper intermittent control device based on MCU control and windscreen wiper control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221128924.6U CN217074278U (en) | 2022-05-11 | 2022-05-11 | Windscreen wiper intermittent control device based on MCU control and windscreen wiper control system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217074278U true CN217074278U (en) | 2022-07-29 |
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ID=82504252
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221128924.6U Active CN217074278U (en) | 2022-05-11 | 2022-05-11 | Windscreen wiper intermittent control device based on MCU control and windscreen wiper control system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217074278U (en) |
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2022
- 2022-05-11 CN CN202221128924.6U patent/CN217074278U/en active Active
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