CN210722115U

CN210722115U - Windscreen wiper control device

Info

Publication number: CN210722115U
Application number: CN201921638440.4U
Authority: CN
Inventors: 李步照; 景李
Original assignee: Yangzhou Polytechnic College
Current assignee: Yangzhou Polytechnic College
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-06-09
Anticipated expiration: 2029-09-29

Abstract

The utility model discloses a wiper controlling means in the automobile control technical field, including steering column combination switch control unit, wiper control unit and timing control unit, steering column combination switch control unit includes the switching value and detects the chip, the switching value detects the chip and connects the steering column combination switch, the switching value detects the chip electricity and is connected with microprocessor MCU1, microprocessor MCU1 electricity is connected with CAN transceiver one, wiper control unit includes microprocessor MCU2 and CAN transceiver two, CAN transceiver is connected with CAN transceiver two electricity through the CAN bus, CAN transceiver two is connected with microprocessor MCU2 electricity, microprocessor MCU2 still electricity is connected with drive chip L99DZ, drive chip electricity is connected with at least one relay, the relay is connected with the motor element; the timing control unit is electrically connected with the microprocessor MCU 1; the utility model discloses can let the audio-visual action process of seeing the wiper of student.

Description

Windscreen wiper control device

Technical Field

The utility model belongs to the technical field of car control, in particular to wiper controlling means.

Background

In the automobile teaching experiment, students need to see the action process of external parts of an automobile in the experiment, for example, the action process of a wiper is simulated, the wiper is driven by a motor, the rotating motion of the motor is converted into the reciprocating motion of the wiper through a connecting rod mechanism, and no existing teaching instrument can enable the students to visually see the action process of the wiper in the teaching work.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model discloses an overcome the weak point among the above-mentioned prior art, solve the technical problem of unable visual simulation wiper action among the prior art, provide a wiper controlling means, the utility model discloses simple structure can let the audio-visual action process of seeing the wiper of student.

The purpose of the utility model is realized like this: a windscreen wiper control device comprises a steering column combined switch control unit, a windscreen wiper control unit and a timing control unit, wherein the steering column combined switch control unit comprises a switching value detection chip MC which is connected with a steering column combined switch, the switching value detection chip MC is electrically connected with a microprocessor MCU1, the output end of the microprocessor MCU1 is electrically connected with a first CAN transceiver, the windscreen wiper control unit comprises a microprocessor MCU2 and a second CAN transceiver, the CAN transceiver is electrically connected with a second CAN transceiver through a CAN bus, the second CAN transceiver is electrically connected with a microprocessor MCU2, the microprocessor MCU2 is further electrically connected with a driving chip L99DZ, the output pin end of the driving chip is electrically connected with at least one relay, and the relay is electrically connected with a motor unit; the timing control unit is electrically connected with the microprocessor MCU 1.

In the utility model, the motor unit drives the wiper to move; when the switch for controlling the action of the wiper in the steering column combined switch is closed, the microprocessor MCU1 sends control reading switch state to the switching value detection chip MC, the microprocessor MCU1 converts corresponding switch signals into messages and sends the messages to the CAN bus through the CAN transceiver, the CAN bus sends switch information to the CAN transceiver II, the CAN transceiver II sends the switch information to the microprocessor MCU2, the microprocessor MCU2 converts corresponding messages into switch signals, the driving chip L3899 99DZ controls the action of the relay coil driving motor unit and the wiper, the timing control unit sends timing signals to the microprocessor MCU2, and the microprocessor MCU2 controls the on-off of the relay according to the timing signals, so that the wiper intermittently acts; the utility model realizes the intermittent action of the windscreen wiper and the teaching experiment of the windscreen wiper through the combined arrangement of the steering column combined switch control unit, the windscreen wiper control unit and the timing control unit; the method can be applied to teaching experiments for simulating the work of the windscreen wiper.

In order to further realize the intermittent action of the windscreen wiper, the timing control unit comprises a power supply VCC and a timer 555, the power supply VCC is connected with an anode of a diode D1, a cathode of the diode D1 is connected with one end of a switch K6, the other end of the switch K6 is connected with one end of a resistor R3 and a pin 7 of the timer 555, the other end of the resistor R3 is connected with a cathode of a diode D4, a pin 5 of the timer 555 is connected with a control end of a relay KZ1, a driving end of the relay KZ1 is connected with a pin 3 of a fracture INT timer 555 in a microprocessor MCU2 and is connected with one end of a capacitor C1, a pin 8 and a pin 7 of the timer 555 are connected, a pin 8 of the timer 555 is further connected with one end of a resistor R1, the other end of the resistor R1 is connected with a cathode of a diode D38 and an anode of a diode D3, a cathode of a diode D3 is connected with a pin 2 of the, an adjusting end of the adjustable resistor R2 and a cathode of the diode D3 are respectively connected with one end of the capacitor C2, and an anode of the diode D4, the other end of the capacitor C1 and the other end of the capacitor C2 are all grounded.

In order to further realize the detection of the switching value, the steering column combined switch comprises a switch K1, a switch K2, a switch K3, a switch K4 and a switch K5, one ends of the switch K1, the switch K2, the switch K3, the switch K4 and the switch K5 are grounded, and the other ends of the switch K1, the switch K2, the switch K3, the switch K4 and the switch K5 are respectively connected with SG 9-SG 13 leads of the switching value detection chip MC.

In order to further improve the running reliability of the wiper motor, an output pin OUT1 and an output pin OUT2 of the driving chip L99DZ are respectively connected with a control end of a relay KZ2 and a control end of a relay KZ3, and driving ends of a relay KZ2 and a relay KZ3 are respectively connected with a motor unit; in the design, the output pin OUT1 and the output pin OUT2 of the driving chip L99DZ control the relay KZ2 and the relay KZ3 to be powered at the same time, and the coils of the relay KZ2 and the relay KZ3 are powered at the same time to drive the motor unit to move and the wiper to move.

Drawings

Fig. 1 is a circuit structure diagram of the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The wiper control device shown in fig. 1 and fig. 2 comprises a steering column combination switch control unit, a wiper control unit and a timing control unit, wherein the steering column combination switch control unit comprises a switching value detection chip MC, the switching value detection chip MC is connected with a steering column combination switch, the switching value detection chip MC is electrically connected with a microprocessor MCU1, the output end of the microprocessor MCU1 is electrically connected with a first CAN transceiver, the wiper control unit comprises a microprocessor MCU2 and a second CAN transceiver, the CAN transceiver is electrically connected with a second CAN transceiver through a CAN bus, the second CAN transceiver is electrically connected with a microprocessor MCU2, the microprocessor MCU2 is further electrically connected with a driving chip L99DZ, an output pin OUT1 and an output pin OUT2 of the driving chip L99DZ are respectively connected with a control end of a relay KZ2 and a control end of a relay KZ3, driving ends of the relay KZ2 and the relay KZ3 are respectively connected with a motor unit, the relay is electrically connected with the motor unit; the timing control unit is electrically connected with the microprocessor MCU1, the timing control unit comprises a power supply VCC and a timer 555, the power supply VCC is connected with the anode of a diode D1, the cathode of the diode D1 is connected with one end of a switch K6, the other end of the switch K6 is connected with one end of a resistor R3 and a pin 7 of the timer 555, the other end of the resistor R3 is connected with the cathode of a diode D4, a pin 5 of the timer 555 is connected with the control end of a relay KZ1, the driving end of the relay KZ1 is connected with a pin 3 of a fracture INT timer 555 in the microprocessor MCU2 and is connected with one end of a capacitor C1, a pin 8 and a pin 7 of the timer 555 are connected, a pin 8 of the timer 555 is further connected with one end of a resistor R1, the other end of the resistor R1 is connected with the cathode of a diode D2 and the anode of a diode D3, the cathode of a diode D3 is connected with a pin 2 of the timer 555, the anode of a diode D2 is connected with one end of an adjustable resistor R, the anode of the diode D4, the other end of the capacitor C1 and the other end of the capacitor C2 are all grounded.

In order to further realize the detection of the switching value, the steering column combination switch comprises a switch K1, a switch K2, a switch K3, a switch K4 and a switch K5, one ends of the switch K1, the switch K2, the switch K3, the switch K4 and the switch K5 are grounded, the other ends of the switch K1, the switch K2, the switch K3, the switch K4 and the switch K5 are respectively connected with SG 9-SG 13 pins of a switching value detection chip MC, the switch K1 is a first-gear wiper switch, the switch K2 is a second-gear wiper switch, the switch K3 is a third-gear wiper switch, the switch K4 is a cleaning pump switch, the switch K5 is a speed regulation switch, and the switches K1, the switch K2 and the switch K3 for controlling the action of the wipers.

In the utility model, the motor unit drives the wiper to move, and the microprocessor MCU1 and the microprocessor MCU2 are both preferably singlechips; when the switch for controlling the action of the wiper in the steering column combined switch is closed, the microprocessor MCU1 sends control reading switch state to the switching value detection chip MC, the microprocessor MCU1 converts corresponding switch signals into messages and sends the messages to the CAN bus through the CAN transceiver, the CAN bus sends switch information to the CAN transceiver II, the CAN transceiver II sends the switch information to the microprocessor MCU2, the microprocessor MCU2 converts corresponding messages into switch signals, the driving chip L99DZ controls the relay coil to drive the motor unit to act and the wiper to act, meanwhile, the switch K6 is pressed down, the 555 timer starts to vibrate, the diodes D1 and D3 are conducted, the capacitor C2 is charged through the resistor R1 and the diode D3, and the voltage on the capacitor C2 is smaller than the voltage on the diode D3 at the moment

The utility model discloses a high level is exported to timer 555's output pin 5, relay KZ1 gets electricity, relay KZ1 normally open contact is closed, timer 555's output pin 5 and microprocessor MCU 2's interrupt port switch-on, microprocessor MCU2 interrupts, electric capacity C2 continuously obtains charging, the voltage on electric capacity C2 constantly increases, when electric capacity C2 both ends voltage rises to electric capacity C2 both ends voltage

When the motor unit is started, an output pin 5 of the timer 555 outputs a low level, the relay KZ1 loses power, a normally-open point of the relay KZ1 is disconnected, the timer 555 is not connected with the microprocessor MCU2, the microprocessor MCU2 controls the relays KZ2 and KZ3 to be powered on, and the relay KZ2 and a relay KZ3 coil drive the motor unit to act; then the capacitor C2 discharges through the diode D2 and the resistor R2 and the pin 6 of the timer, when the voltage discharged to the capacitor C2 is less than

When the output pin 5 of the timer 555 is changed into high level output again, the relay KZ1 is electrified again, the microprocessor MCU2 is interrupted, the relay KZ2 and the relay KZ3 are electrified, the motor unit stops operating, and the above operations are repeatedly executed, when any of the switch K1, the switch K2 and the switch K3 is disconnected, the output pin OUT1 and the output pin OUT2 of the microprocessor MCU2 keep low level output, and the motor unit uniformly stops operating regardless of whether the switch K6 is closed; the utility model realizes the intermittent action of the wiper and the simulation teaching of the action of the wiper through the combined setting of the steering column combined switch control unit, the wiper control unit and the timing control unit; the method can be applied to teaching experiments for simulating the work of the windscreen wiper.

The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some replacements and transformations for some technical features without creative labor according to the disclosed technical contents, and these replacements and transformations are all within the protection scope of the present invention.

Claims

1. A windscreen wiper control device is characterized by comprising a steering column combined switch control unit, a windscreen wiper control unit and a timing control unit, wherein the steering column combined switch control unit comprises a switching value detection chip MC which is connected with a steering column combined switch, the switching value detection chip MC is electrically connected with a microprocessor MCU1, the output end of the microprocessor MCU1 is electrically connected with a CAN transceiver I, the windscreen wiper control unit comprises a microprocessor MCU2 and a CAN transceiver II, the CAN transceiver is electrically connected with the CAN transceiver II through a CAN bus, the CAN transceiver II is electrically connected with a microprocessor MCU2, the microprocessor MCU2 is further electrically connected with a driving chip L99DZ, the output pin end of the driving chip is electrically connected with at least one relay, and the relay is electrically connected with a motor unit; the timing control unit is electrically connected with the microprocessor MCU 1.

2. The wiper control device as claimed in claim 1, wherein said timing control unit includes a power VCC and a timer 555, the power VCC is connected to an anode of a diode D1, a cathode of a diode D1 is connected to one end of a switch K6, the other end of a switch K6 is connected to one end of a resistor R3 and a pin 7 of the timer 555, the other end of the resistor R3 is connected to a cathode of a diode D4, a pin 5 of the timer 555 is connected to a control end of a relay KZ1, a driving end of the relay KZ1 is connected to a pin 3 of a break INT timer 555 in the microprocessor MCU2 and to one end of a capacitor C1, a pin 8 and a pin 7 of the timer 555 are connected, a pin 8 of the timer 555 is further connected to one end of a resistor R1, the other end of a resistor R1 is connected to a cathode of a diode D2 and an anode of a diode D3, a cathode of a diode D3 is connected to a pin 2 of the timer 555, an anode of a diode D2 is connected, an adjusting end of the adjustable resistor R2 and a cathode of the diode D3 are respectively connected with one end of the capacitor C2, and an anode of the diode D4, the other end of the capacitor C1 and the other end of the capacitor C2 are all grounded.

3. The wiper control apparatus according to claim 1 or 2, wherein the steering column combination switch includes a switch K1, a switch K2, a switch K3, a switch K4, and a switch K5, one ends of the switches K1, K2, K3, K4, and K5 are grounded, and the other ends of the switches K1, K2, K3, K4, and K5 are connected to SG9 to SG13 pins of the switching value detection chip MC, respectively.

4. The wiper control apparatus as set forth in claim 1 or 2, wherein the output pin OUT1 and the output pin OUT2 of the driver chip L99DZ are connected to the control terminal of the relay KZ2 and the control terminal of the relay KZ3, respectively, and the driving terminals of the relay KZ2 and the relay KZ3 are connected to the motor unit, respectively.