CN210618080U - Vehicle and wiper control system of vehicle thereof - Google Patents
Vehicle and wiper control system of vehicle thereof Download PDFInfo
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- CN210618080U CN210618080U CN201920962652.1U CN201920962652U CN210618080U CN 210618080 U CN210618080 U CN 210618080U CN 201920962652 U CN201920962652 U CN 201920962652U CN 210618080 U CN210618080 U CN 210618080U
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Abstract
The utility model discloses a vehicle and windscreen wiper control system thereof, wherein windscreen wiper control system includes: the device comprises a wiper motor, a power device, a controllable switch unit, a motor reset discharge unit and a control unit; the control unit outputs a first control signal to the controllable switch unit to control the controllable switch unit to be switched on, the power device is switched on to output the first control signal to control the wiper motor to work, and outputs a second control signal to the controllable switch unit to control the controllable switch unit to be switched off, the power device is switched off to output the second control signal to control the wiper motor to stop, and when the power device is switched off to output the second control signal, the power device outputs a discharging control signal to the motor resetting discharging unit through the discharging control output end to discharge the working current of the wiper motor. Therefore, the working current of the wiper motor is discharged through the motor resetting discharge unit, so that the current of the wiper motor is discharged instantly, and the fault of the wiper motor caused by large current is avoided.
Description
Technical Field
The utility model relates to the technical field of vehicles, in particular to windscreen wiper control system and a vehicle that has this windscreen wiper control system of vehicle.
Background
In the related art, the wiper motor is usually directly controlled by a wiper combination switch or a relay, that is, when the wiper combination switch is disconnected, the wiper motor forms a shutdown loop through a wire harness and the combination switch to realize the resetting of the wiper motor; because the wiper motor can generate current which is several times larger than the current at ordinary times when the wiper motor is stopped, arc discharge is easily generated between the contacts of the combined switch, so that the contacts are ablated, and the failure rate of the wiper motor is greatly increased.
SUMMERY OF THE UTILITY MODEL
The present invention aims at solving at least one of the technical problems in the above-mentioned technology to a certain extent. Therefore, an object of the utility model is to provide a windscreen wiper control system of vehicle, discharge the unit through increasing the motor resets and discharge the operating current of windscreen wiper motor and release for windscreen wiper motor current is put away in the twinkling of an eye, thereby has avoided the trouble of the windscreen wiper motor that leads to because of the heavy current.
Another object of the present invention is to provide a vehicle.
In order to achieve the above object, the present invention provides a wiper control system for a vehicle, including: a wiper motor; the power device comprises an input pin and an output pin, and the output pin is connected with the wiper motor; a first end of the controllable switch unit is connected with the input pin, and a second end of the controllable switch unit is grounded; the motor reset discharge unit is connected with the wiper motor at the discharge end; a control unit, wherein the discharge control output end of the control unit is connected with the control end of the motor reset discharge unit, the motor control output end of the control unit is connected with the control end of the controllable switch unit, the control unit outputs a first control signal to the controllable switch unit through the motor control output end to control the controllable switch unit to be conducted, the power device is conducted to output, to control the wiper motor to work, and output a second control signal to the controllable switch unit through the motor control output end to control the controllable switch unit to be switched off, the power device is switched off to output so as to control the wiper motor to stop, and when the power device is switched off and output, the discharge control output end outputs a discharge control signal to the motor reset discharge unit, so as to discharge the working current of the wiper motor through the motor reset discharge unit.
According to the utility model provides a windscreen wiper control system of vehicle, the first control signal of motor control output through the control unit switches on with the control controllable switch unit for the controllable switch unit, power device opens and exports, work with the control windscreen wiper motor, and export the second control signal for the controllable switch unit with the turn-off of control controllable switch unit through the motor control output, power device turn-off output, with carry out shutdown control to the windscreen wiper motor, and export discharge control signal for the motor unit that discharges through the discharge control output when power device turn-off output, discharge the operating current of unit to the windscreen wiper motor through the motor unit that discharges that resets. Therefore, when the power device is switched off and output, the working current of the wiper motor is discharged through the motor resetting discharge unit, so that the current of the wiper motor is discharged instantly, and the fault of the wiper motor caused by large current is avoided.
In addition, according to the present invention, the wiper control system for a vehicle may further have the following additional technical features:
optionally, the power device further includes a current detection pin, the current detection pin generates a current detection signal according to a load current of the output pin, and the wiper control system further includes: the current sampling unit is connected with the current detecting pin and generates a sampling voltage signal according to the current detecting signal; the AD sampling end of the control unit is connected with the current sampling unit, the control unit judges that the load current exceeds a preset current threshold value and the duration time exceeds preset time according to the sampling voltage signal, a second control signal is output by the motor control output end to the controllable switch unit to control the controllable switch unit to be switched off, and the power device is switched off and output.
Optionally, the wiper control system of the vehicle further includes: and the input end of the forced protection unit is connected with the current detection pin, the output end of the forced protection unit is connected with the control end of the controllable switch unit, and the forced protection unit generates a second control signal when the load current is greater than the current protection threshold value so as to forcibly turn off the controllable switch unit.
Optionally, the current sampling unit includes: one end of the first resistor is connected with the current detecting pin; one end of the second resistor is connected with the other end of the first resistor and is provided with a first node, and the other end of the second resistor is grounded; a third resistor, one end of which is connected to the first node; the anode of the voltage stabilizing diode is grounded, and the cathode of the voltage stabilizing diode is connected with the other end of the third resistor; one end of the fourth resistor is connected with the cathode of the voltage stabilizing diode and the other end of the third resistor respectively, and the other end of the fourth resistor is connected with the AD sampling end of the control unit; and one end of the first capacitor is connected with the other end of the fourth resistor, and the other end of the first capacitor is grounded.
Optionally, the controllable switching unit comprises: the source electrode of the first switching tube is grounded, and the grid electrode of the first switching tube is respectively connected with the motor control output end of the control unit and the output end of the forced protection unit; one end of the fifth resistor is connected with the drain electrode of the first switch tube, and the other end of the fifth resistor is connected with the input pin.
Optionally, the mandatory protection unit includes: one end of the sixth resistor is connected with the current detecting pin; one end of the seventh resistor is connected with the other end of the sixth resistor and is provided with a second node, and the other end of the seventh resistor is grounded; the second capacitor is connected with the seventh resistor in parallel; a gate of the second switching tube is connected with the second node, a source of the second switching tube is grounded, and a drain of the second switching tube is connected with the gate of the first switching tube; and the eighth resistor is connected between the drain electrode and the source electrode of the second switching tube.
Optionally, the first switch tube and the second switch tube are both NOMS tubes.
Optionally, the control unit comprises: the AD sampling pin of the controller is used as the AD sampling end of the control unit, and the discharge control pin of the controller is used as the discharge control output end of the control unit; the anode of the first diode is connected with a motor control output pin of the controller; and one end of the ninth resistor is connected with the cathode of the first diode, and the other end of the ninth resistor is used as the motor control output end of the control unit.
Optionally, the motor reset discharge unit includes: the anode of the second diode is connected with the discharge control output end of the control unit; a base electrode of the first triode is connected with a cathode of the second diode, and an emitting electrode of the first triode is grounded; the base electrode of the second triode is connected with the collector electrode of the first triode, and the emitting electrode of the second triode is connected with a power supply; a tenth resistor connected between the emitter and the collector of the second triode; one end of the eleventh resistor is connected with the collector of the second triode; one end of the twelfth resistor is connected with the other end of the eleventh resistor and is provided with a third node, and the other end of the twelfth resistor is grounded; a third capacitor connected in parallel with the twelfth resistor; and the grid electrode of the third switching tube is connected with the third node, the drain electrode of the third switching tube is connected with the wiper motor, and the source electrode of the third switching tube is grounded.
In order to achieve the above object, the present invention also provides a vehicle including the wiper control system of the above vehicle.
According to the utility model provides a vehicle, through the windscreen wiper control system of foretell vehicle for the heavy current that the windscreen wiper motor produced when shutting down is put away in the twinkling of an eye, thereby has avoided the arc phenomenon that draws that leads to because of the heavy current, greatly reduced the fault rate of windscreen wiper motor.
Drawings
Fig. 1 is a block diagram schematic diagram of a wiper control system of a vehicle according to an embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a wiper control system of a vehicle according to an embodiment of the present invention;
fig. 3 is a block diagram of a vehicle according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.
In order to better understand the above technical solutions, exemplary embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the invention are shown in the drawings, it should be understood that the invention can be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
As shown in fig. 1, a wiper control system for a vehicle according to an embodiment of the present invention includes a wiper motor 70, a power device 10, a controllable switch unit 20, a motor reset discharge unit 30, and a control unit 40.
Wherein the power device 10 includes an input pin and an output pin, the output pin being connected to the wiper motor 70; a first end of the controllable switch unit 20 is connected to the input pin, and a second end of the controllable switch unit 20 is grounded; the discharging end of the motor reset discharging unit 30 is connected with the wiper motor 70; the discharge control output end of the control unit 40 is connected with the control end of the motor reset discharge unit 30, the motor control output end of the control unit 40 is connected with the control end of the controllable switch unit 20, the control unit 40 outputs a first control signal to the controllable switch unit 20 through the motor control output end to control the controllable switch unit to be conducted, the power device 10 is conducted to output, to control the wiper motor 70 to work, and output a second control signal to the controllable switch unit 20 through the motor control output terminal to control the controllable switch unit 20 to be turned off, the power device 10 is turned off to perform a stop control on the wiper motor 70, and outputs a discharge control signal to the motor reset discharge unit 30 through the discharge control output terminal when the power device 10 turns off the output, to discharge the operating current of the wiper motor 70 through the motor reset discharge unit 30.
According to an embodiment of the present invention, the power device 10 may employ the BTS 50085.
According to the utility model provides a windscreen wiper control system of vehicle, the first control signal of motor control output through the control unit switches on with the control controllable switch unit for the controllable switch unit, power device opens and exports, work with the control windscreen wiper motor, and export the second control signal for the controllable switch unit with the turn-off of control controllable switch unit through the motor control output, power device turn-off output, with carry out shutdown control to the windscreen wiper motor, and export discharge control signal for the motor unit that discharges through the discharge control output when power device turn-off output, discharge the operating current of unit to the windscreen wiper motor through the motor unit that discharges that resets. Therefore, when the power device is switched off and output, the working current of the wiper motor is discharged through the motor resetting discharge unit, so that the current of the wiper motor is discharged instantly, and the fault of the wiper motor caused by large current is avoided.
According to an embodiment of the present invention, as shown in fig. 2, the power device 10 further includes a current detection pin IS, the current detection pin IS generates a current detection signal according to a load current of the output pin OUT, and the wiper control system further includes: a current sampling unit 50.
The current sampling unit 50 IS connected to the current detection pin IS, and the current sampling unit 50 generates a sampling voltage signal according to the current detection signal.
That IS, the current sampling unit 50 IS connected to the current detection pin IS, and the current sampling unit 50 obtains a current detection signal through the current detection pin IS and converts the current detection signal into a sampling voltage signal for the control unit 40 to perform AD acquisition.
The AD sampling end of the control unit 40 is connected to the current sampling unit 50, and when the control unit 40 determines that the load current exceeds the preset current threshold and the duration time exceeds the preset time according to the sampling voltage signal, the control unit outputs a second control signal to the controllable switch unit 20 through the motor control output end to control the controllable switch unit 20 to be turned off, and the power device 10 is turned off and output.
That is to say, the control unit 40 performs AD collection through the AD sampling terminal to calculate a current value of the output pin OUT of the power device 10, and then determines whether the load current exceeds a preset current threshold and the duration exceeds a preset time according to the sampling voltage signal, that is, the current value of the output pin OUT of the power device 10, so as to control the motor control output terminal to output a corresponding control signal to control the controllable switch unit 30 and the power device 10 to be turned on or off.
As an embodiment, the preset current threshold is 50% of the rated current of the load, and the preset time is 10S; or, the preset current threshold is the rated current of the load, and the preset time is 5S; alternatively, the preset current threshold is 150% of the rated current of the load, and the preset time is 2S.
In one embodiment, the first control signal is a high-level signal, and the second control signal is a low-level signal.
That is, if there are the following three conditions, the control unit 40 outputs a low level signal to the controllable switch unit 30 through the motor control output end to control the controllable switch unit 30 to turn off, and controls the power device 10 to turn off the output, so as to protect the load; the first method is as follows: when the load current exceeds 50% of the rated current and the duration exceeds 10S; the second method is as follows: when the load current exceeds 100% of the rated current and the duration exceeds 5S; the third is: when the load current exceeds 150% of its rated current and the duration exceeds 2S.
According to the utility model discloses an embodiment, current sampling unit includes: the circuit comprises a first resistor R1, a second resistor R2, a third resistor R3, a zener diode D2, a fourth resistor R4 and a first capacitor C1; one end of the first resistor R1 IS connected with the current detecting pin IS; one end of the second resistor R2 is connected with the other end of the first resistor R1 and is provided with a first node A, and the other end of the second resistor R2 is grounded; one end of the third resistor R3 is connected to the first node a; the anode of the voltage-stabilizing diode D2 is grounded, and the cathode of the voltage-stabilizing diode D1 is connected with the other end of the third resistor R3; one end of the fourth resistor R4 IS connected to the cathode of the zener diode D2 and the other end of the third resistor R3, respectively, and the other end of the fourth resistor R4 IS connected to the AD sampling terminal IS16 of the control unit 40; one end of the first capacitor C1 is connected to the other end of the fourth resistor R4, and the other end of the first capacitor C1 is grounded.
It should be noted that the current sampling unit 50 divides the voltage through the first resistor R1, the second resistor R2, and the third resistor R3, converts the current detection signal generated by the current detection pin IS into a sampling voltage signal to be input to the fourth resistor R4, clamps and filters the sampling voltage signal through the voltage stabilizing diode D2 and the first capacitor C1, and inputs the filtered voltage signal to the AD sampling terminal IS17 of the control unit 40 to be used by the control unit 40 for AD acquisition, so as to calculate the current value of the output pin OUT of the power device 10.
Note that the current value of the current detection pin IS of the power device 10 IS in direct proportion to the current value of the output pin OUT.
Further, as shown in fig. 2, the wiper control system of the vehicle further includes a forced protection unit 60, an input terminal of the forced protection unit 60 IS connected to the current detection pin IS, an output terminal of the forced protection unit 60 IS connected to the control terminal of the controllable switch unit 20, and the forced protection unit 60 generates a second control signal when the load current IS greater than the current protection threshold value, so as to force the controllable switch unit 20 to turn off.
According to the utility model discloses an embodiment, force the protection unit to include: a sixth resistor R6, a seventh resistor R7, a second capacitor C2, a second switch tube Q2 and an eighth resistor R8; one end of the sixth resistor R6 IS connected with the current detecting pin IS; one end of the seventh resistor R7 is connected to the other end of the sixth resistor R6 and has a second node B, and the other end of the seventh resistor R7 is grounded; the second capacitor C2 is connected with the seventh resistor R7 in parallel; the grid electrode of the second switching tube Q2 is connected with the second node B, the source electrode of the second switching tube Q2 is grounded, and the drain electrode of the second switching tube Q2 is connected with the grid electrode of the first switching tube Q1; the eighth resistor R8 is connected between the drain and the source of the second switch Q2.
When the current detection pin IS detects that the load current IS greater than the current protection threshold, the second switch Q2 IS turned on, the gate voltage of the first switch Q1 IS connected to ground, and the first switch Q1 IS turned off, so as to control the power device to turn off the output.
As an embodiment, the second switch Q2 is an NOMS transistor, and may be specifically BSS123, which is not limited in the present invention.
According to the utility model discloses an embodiment, controllable switch unit includes: a first switch tube Q1 and a fifth resistor R5; the source of the first switch tube Q1 is grounded, and the gate of the first switch tube Q1 is connected to the motor control output end of the control unit 40 and the output end of the forced protection unit 50 respectively; one end of the fifth resistor R5 is connected to the drain of the first switch Q1, and the other end of the fifth resistor R5 is connected to the input pin IN.
As an embodiment, the first switch Q1 is an NOMS transistor, and may be specifically BSS123, which is not specifically limited by the present invention.
According to the utility model discloses an embodiment, the control unit includes: a controller, a first diode D1, and a ninth resistor R9; an AD sampling pin IS17 of the controller IS used as an AD sampling end of the control unit 40, and a discharge control pin M1 of the controller IS used as a discharge control output end of the control unit 40; the anode of the first diode D1 is connected with a motor control output pin IN17 of the controller; one end of the ninth resistor R9 is connected to the cathode of the first diode D1, and the other end of the ninth resistor R9 serves as a motor control output terminal of the control unit 40.
According to an embodiment of the present invention, as shown in fig. 2, the motor reset discharge unit includes: the circuit comprises a second diode D3, a first triode Q3, a second triode Q4, a tenth resistor R10, an eleventh resistor R11, a twelfth resistor R12, a third capacitor C3 and a third switching tube Q5; the anode of the second diode D3 is connected to the discharge control output of the control unit 40; the base electrode of the first triode Q3 is connected with the cathode electrode of the second diode D3, and the emitter electrode of the first triode Q3 is grounded; the base electrode of the second triode Q4 is connected with the collector electrode of the first triode Q3, and the emitter electrode of the second triode D3 is connected with the power supply; the tenth resistor R10 is connected between the emitter and the collector of the second triode Q4; one end of the eleventh resistor R11 is connected with the collector of the second triode Q4; one end of the twelfth resistor R12 is connected with the other end of the eleventh resistor R11 and is provided with a third node C, and the other end of the twelfth resistor R12 is grounded; the third capacitor C3 is connected with the twelfth resistor R12 in parallel; the gate of the third switch tube Q5 is connected to the third node C, the drain of the third switch tube Q5 is connected to the wiper motor 70, and the source of the third switch tube Q5 is grounded.
It should be noted that, when the power device 10 turns off the output, the wiper motor 70 stops working, and at this time, the discharge control pin M1 is at a high level, and both the first transistor Q3 and the second transistor Q4 are turned on, so that the third transistor Q5 is turned on, and the wiper motor current is discharged instantaneously, thereby stopping the wiper motor instantaneously.
In conclusion, according to the utility model provides a windscreen wiper control system of vehicle, the first control signal of motor control output through the control unit switches on with the control controllable switch unit for the controllable switch unit, power device opens and exports, work with the control windscreen wiper motor, and pass through motor control output second control signal and turn off with the control controllable switch unit for the controllable switch unit of control, power device turns off the output, in order to carry out shutdown control to the windscreen wiper motor, and when power device turn off the output through the discharge control output discharge control signal for the motor unit that discharges that resets, in order to discharge the operating current of the windscreen wiper motor through the motor unit that discharges that resets. Therefore, when the power device is switched off and output, the working current of the wiper motor is discharged through the motor resetting discharge unit, so that the current of the wiper motor is discharged instantly, and the fault of the wiper motor caused by large current is avoided.
In addition, as shown in fig. 3, an embodiment of the present invention further provides a vehicle 2000, which includes the wiper control system 1000 of the vehicle.
According to the utility model discloses vehicle, through the windscreen wiper control system of foretell vehicle for the heavy current that the windscreen wiper motor produced when shutting down is put away in the twinkling of an eye, thereby has avoided the arc phenomenon that draws that leads to because of the heavy current, greatly reduced the fault rate of windscreen wiper motor.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above should not be understood to necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. A wiper control system for a vehicle, comprising:
a wiper motor;
the power device comprises an input pin and an output pin, and the output pin is connected with the wiper motor;
a first end of the controllable switch unit is connected with the input pin, and a second end of the controllable switch unit is grounded;
the motor reset discharge unit is connected with the wiper motor at the discharge end;
a control unit, wherein the discharge control output end of the control unit is connected with the control end of the motor reset discharge unit, the motor control output end of the control unit is connected with the control end of the controllable switch unit, the control unit outputs a first control signal to the controllable switch unit through the motor control output end to control the controllable switch unit to be conducted, the power device is conducted to output, to control the wiper motor to work, and output a second control signal to the controllable switch unit through the motor control output end to control the controllable switch unit to be switched off, the power device is switched off to output so as to control the wiper motor to stop, and when the power device is switched off and output, the discharge control output end outputs a discharge control signal to the motor reset discharge unit, so as to discharge the working current of the wiper motor through the motor reset discharge unit.
2. The wiper control system of a vehicle of claim 1 wherein said power device further comprises a current sensing pin that generates a current sensing signal based on a load current of said output pin, said wiper control system further comprising:
the current sampling unit is connected with the current detecting pin and generates a sampling voltage signal according to the current detecting signal;
the AD sampling end of the control unit is connected with the current sampling unit, the control unit judges that the load current exceeds a preset current threshold value and the duration time exceeds preset time according to the sampling voltage signal, a second control signal is output by the motor control output end to the controllable switch unit to control the controllable switch unit to be switched off, and the power device is switched off and output.
3. The wiper control system of a vehicle of claim 2, further comprising:
and the input end of the forced protection unit is connected with the current detection pin, the output end of the forced protection unit is connected with the control end of the controllable switch unit, and the forced protection unit generates a second control signal when the load current is greater than the current protection threshold value so as to forcibly turn off the controllable switch unit.
4. The wiper control system of a vehicle of claim 3, wherein the current sampling unit comprises:
one end of the first resistor is connected with the current detecting pin;
one end of the second resistor is connected with the other end of the first resistor and is provided with a first node, and the other end of the second resistor is grounded;
a third resistor, one end of which is connected to the first node;
the anode of the voltage stabilizing diode is grounded, and the cathode of the voltage stabilizing diode is connected with the other end of the third resistor;
one end of the fourth resistor is connected with the cathode of the voltage stabilizing diode and the other end of the third resistor respectively, and the other end of the fourth resistor is connected with the AD sampling end of the control unit;
and one end of the first capacitor is connected with the other end of the fourth resistor, and the other end of the first capacitor is grounded.
5. The wiper control system of a vehicle of claim 4 wherein the controllable switch unit comprises:
the source electrode of the first switching tube is grounded, and the grid electrode of the first switching tube is respectively connected with the motor control output end of the control unit and the output end of the forced protection unit;
one end of the fifth resistor is connected with the drain electrode of the first switch tube, and the other end of the fifth resistor is connected with the input pin.
6. The wiper control system of a vehicle according to claim 5, wherein the forced protection unit includes:
one end of the sixth resistor is connected with the current detecting pin;
one end of the seventh resistor is connected with the other end of the sixth resistor and is provided with a second node, and the other end of the seventh resistor is grounded;
the second capacitor is connected with the seventh resistor in parallel;
a gate of the second switching tube is connected with the second node, a source of the second switching tube is grounded, and a drain of the second switching tube is connected with the gate of the first switching tube;
and the eighth resistor is connected between the drain electrode and the source electrode of the second switching tube.
7. The wiper control system of claim 6 wherein said first and second switching tubes are NOMS tubes.
8. The wiper control system of a vehicle of any one of claims 2-7, wherein the control unit comprises:
the AD sampling pin of the controller is used as the AD sampling end of the control unit, and the discharge control pin of the controller is used as the discharge control output end of the control unit;
the anode of the first diode is connected with a motor control output pin of the controller;
and one end of the ninth resistor is connected with the cathode of the first diode, and the other end of the ninth resistor is used as the motor control output end of the control unit.
9. The wiper control system of a vehicle of claim 1, wherein the motor reset discharge unit comprises:
the anode of the second diode is connected with the discharge control output end of the control unit;
a base electrode of the first triode is connected with a cathode of the second diode, and an emitting electrode of the first triode is grounded;
the base electrode of the second triode is connected with the collector electrode of the first triode, and the emitting electrode of the second triode is connected with a power supply;
a tenth resistor connected between the emitter and the collector of the second triode;
one end of the eleventh resistor is connected with the collector of the second triode;
one end of the twelfth resistor is connected with the other end of the eleventh resistor and is provided with a third node, and the other end of the twelfth resistor is grounded;
a third capacitor connected in parallel with the twelfth resistor;
and the grid electrode of the third switching tube is connected with the third node, the drain electrode of the third switching tube is connected with the wiper motor, and the source electrode of the third switching tube is grounded.
10. A vehicle comprising a wiper control system of the vehicle according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962652.1U CN210618080U (en) | 2019-06-25 | 2019-06-25 | Vehicle and wiper control system of vehicle thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920962652.1U CN210618080U (en) | 2019-06-25 | 2019-06-25 | Vehicle and wiper control system of vehicle thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210618080U true CN210618080U (en) | 2020-05-26 |
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| CN201920962652.1U Active CN210618080U (en) | 2019-06-25 | 2019-06-25 | Vehicle and wiper control system of vehicle thereof |
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| CN (1) | CN210618080U (en) |
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