阅读说明：本技术 一种通过雨刮档位关闭发动机怠速启停功能的系统及方法 (System and method for shutting down idling start-stop function of engine through windscreen wiper gear ) 是由 黄茜 陈元浪 陈满秀 翟毅 于 2021-02-20 设计创作，主要内容包括：本发明公开一种通过雨刮档位关闭发动机怠速启停功能的系统,它包括电源Ⅰ、电源Ⅱ、雨刮高速档控制单元和怠速启停控制单元,所述雨刮高速档控制单元一端接电源Ⅰ的正极,另一端接地。本发明不需要驾驶员寻找关闭怠速启停功能的按键或方法,只需要在雨量大到驾驶员根据习惯将雨刮调到高速档位,或汽车本身的雨量传感器根据雨量自动将雨刮调到高速档位,即可自动触发一次怠速启停电路实现关闭,直到车辆正常熄火。正常情况下不会禁止怠速启停功能,符合驾驶员的行车习惯,简单有效,既达到保障驾驶员减少经济损失的目的,又符合当前绿色环保、节能减排的国家政策倡导。(The invention discloses a system for shutting down an engine idling start-stop function through a wiper gear, which comprises a power supply I, a power supply II, a wiper high-speed gear control unit and an idling start-stop control unit, wherein one end of the wiper high-speed gear control unit is connected with the positive electrode of the power supply I, and the other end of the wiper high-speed gear control unit is grounded. According to the invention, a driver does not need to search a key or a method for turning off the idling start-stop function, and only when the rainfall is so great that the driver turns the windscreen wiper to a high-speed gear according to habits, or the windscreen wiper is automatically turned to the high-speed gear by the rainfall sensor of the automobile, the idling start-stop circuit can be automatically triggered once to be turned off until the automobile is normally flamed out. The idling start-stop function can not be forbidden under the normal condition, the driving habit of a driver is met, the method is simple and effective, the aim of ensuring the driver to reduce economic loss is achieved, and the national policy advocates of current environmental protection, energy conservation and emission reduction are met.)

1. A system for shutting down an engine idling start-stop function through a wiper gear comprises a power supply I, a power supply II, a wiper high-speed gear control unit and an idling start-stop control unit, wherein one end of the wiper high-speed gear control unit is connected with the positive electrode of the power supply I, and the other end of the wiper high-speed gear control unit is grounded; the idle speed opens stops the control unit and stops circuit and manual control idle speed including the idle speed of establishing ties and open the start stop button K3 that stops the circuit break-make, open a termination power II's of stop button K3 anodal, the idle speed opens the one end ground connection of stopping the circuit, its characterized in that: establish ties a emitting diode VL before the windscreen wiper high-speed grade the control unit, still be equipped with the light energy signal that is used for absorbing emitting diode VL and then trigger the idling and open the monitoring control unit that the circuit closed that stops between windscreen wiper high-speed grade the control unit and the idling start-stop control unit, monitoring control unit includes:

a power supply III for supplying electric energy to the electric appliance element of the monitoring control unit;

the phototriode VT is used for absorbing a light energy signal of the light emitting diode VL, converting the absorbed light energy into electric energy and amplifying current;

the triode V1 amplifies and conducts the current of the phototriode VT, the emitting electrode of the phototriode VT is connected with the base electrode of the triode V1, the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive electrode of a power supply III, and the emitting electrode of the triode V1 is connected with the negative electrode of the power supply III;

a capacitor C1 for isolating direct current and passing alternating current; the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with the anode of a capacitor C1, and the cathode of the capacitor C1 is connected with the cathode of a power supply III;

the 555 chip is used for monitoring current signals and further judging whether the output level is high, wherein a pin 1 of the 555 chip is grounded, pins 2 and 6 are connected with the anode of a capacitor C1, and pins 4 and 8 are connected with the anode of a power supply III;

a relay KM1 for closing the idling start-stop circuit; one end of a coil of the relay KM1 is connected with a pin 3 of the 555 chip, a main contact K1-1 of the relay KM1 is connected with two ends of a start-stop button K3 in parallel, one end of the main contact K1-1 is connected with the anode of a power supply II, and the other end of the main contact K1-1 is connected with an idle speed start-stop circuit;

the relay KM2 is used for disconnecting the coil circuit of the relay KM1 and preventing the secondary triggering of the idling start-stop circuit; one end of a main contact K2-1 of the relay KM2 is connected with the other end of the coil of the relay KM1, and the other end of the main contact K2-1 is connected with the anode of a power supply III; an auxiliary contact K1-2 of the relay KM1 is connected with an auxiliary contact K2-2 of the relay KM2 in parallel, one end of the parallel connection is connected with the anode of a power supply III, the other end of the parallel connection is connected with one end of a coil of a relay KM2, and the other end of the coil of the relay KM2 is connected with the cathode of the power supply III.

2. The system of claim 1, wherein the system is configured to shut down an idle stop-start function of the engine through a wiper gear, and further comprising: the monitoring control unit further comprises a capacitor C2 and a diode D1, the anode of the capacitor C2 is connected with the 5 pin of the 555 chip, and the cathode of the capacitor C2 is connected with the cathode of the power supply III; the anode of the diode D1 is connected with the pin 3 of the 555 chip, and the cathode of the diode D1 is connected with the anode of the power supply III.

3. The system of claim 1, wherein the system is configured to shut down an idle stop-start function of the engine through a wiper gear, and further comprising: the main contact K1-1 is a normally open contact, and the auxiliary contact K1-2 is a normally open contact.

4. The system of claim 1, wherein the system is configured to shut down an idle stop-start function of the engine through a wiper gear, and further comprising: the main contact K2-1 is a normally closed contact, and the auxiliary contact K2-2 is a normally open contact.

5. Method for shutting down an engine idle stop-start function by means of a wiper gear according to any of claims 1-4, characterized in that it comprises the following steps:

s1, starting the vehicle, and automatically starting the idling start-stop function of the engine;

s2, judging whether to open the wiper high-speed control unit according to the rainfall driver or the system; if not, continuing to keep the engine idling start-stop function working; if yes, go to step S3;

s3, acquiring a conduction signal of the wiper high-speed control unit, and starting the monitoring control unit by using the conduction signal;

s4, detecting the instantaneous potential difference in the control unit after the conduction, and outputting a level signal;

s5, controlling a relay KM1 to trigger an idling start-stop circuit to be closed based on the level signal;

s6, the coil circuit of the relay KM1 is opened.

6. The method of claim 5, wherein: the conduction signal of the wiper high-speed gear control unit is an optical energy signal of a light emitting diode VL.

7. The method of claim 6, wherein: the start monitoring control unit is used for conducting the phototriode VT by absorbing the light energy signal of the light-emitting diode VL, and the phototriode VT conducts the triode V1 after amplifying the current.

8. The method of claim 5, wherein: in the step S4, the 555 chip detects the instantaneous current change from nothing to nothing at the collector connecting end of the phototriode VT and the triode V1, so that the port potentials of the pins 2 and 6 of the 555 chip are reduced to generate a potential difference, and thus the pin 3 of the 555 chip outputs a level signal.

9. The method of claim 5, wherein: the control relay KM1 triggers the idle speed start-stop circuit, and a coil of the relay KM1 is switched on based on an output level signal, so that a main contact K1-1 connected in front of the idle speed start-stop circuit is closed and conducted, and the idle speed start-stop circuit is triggered.

10. The method of claim 9, wherein: the coil circuit of the disconnection relay KM1 is that after the coil of the relay KM1 is switched on, the coil of the relay KM2 is switched on by using the auxiliary contact K1-2, the main contact K2-1 of the subsequent electric appliance KM2 is switched off, the auxiliary contact K2-2 is closed, and then the current only passes through the auxiliary contact K2-2 and the coil of the relay KM2, so that the coil of the relay KM1 is switched off.

Technical Field

The invention belongs to the field of idling start-stop of engines, and particularly relates to a system and a method for closing an idling start-stop function of an engine through a wiper gear.

Background

With the development of automobile energy-saving technology, an automobile engine idling start-stop system is widely applied. The idling start-stop system of the engine can effectively reduce oil consumption, reduce the emission of waste gas and avoid the problem of carbon deposition of the engine by intelligently starting and stopping the engine under the idling condition. According to the data provided by the BELLFAR automotive laboratory, it shows: 1. when the dao of the small automobile with the standard displacement of 1.6L idles (the engine idles), the average version oil consumption is 42ml/min (milliliters/minute), the average idling of 1L gasoline is 23.8 minutes, and the automobile can run for 1 kilometer after idling for three minutes. 2. The fuel can not be completely combusted when the automobile is idling, which is the main reason of engine carbon deposition, the engine carbon deposition can increase the energy consumption of the automobile and reduce the power output of the engine, and the toxic substances contained in the tail gas discharged when the automobile is idling are 73 times of the tail gas discharged when the automobile is idling at the speed of 80 km/h. 3. The cold start is also called as 'key start', when in work, the starting motor runs at full load, the automobile injects oil at high concentration, the oil consumption is huge, and the average oil consumption is 48 ml/time and is more than one minute compared with the idling speed. 4. The hot start is the accurate start of the system microcomputer signal, the difference energy compensation is carried out through the computer instruction, the ultra-low load start of the starting motor is controlled, the oil remained on the cylinder wall when the engine is stopped is accurately ignited by ultra-low oil quantity, the ignition of the low oil quantity is realized, and the complete combustion of the remained oil is achieved. The average oil consumption of the hot start ignition is 2.1 ml/time, and is less than 1/20 of the oil consumption of the cold start. Therefore, the idling start-stop technology of the automobile engine is in line with the current national policies of environmental protection, energy conservation and emission reduction. The working principle is as follows: when the automobile encounters traffic jam, traffic lights or emergency braking, the intelligent starting and stopping system collects the running state signals of the automobile through the sensor to judge whether the automobile has intelligent starting and stopping conditions. Meanwhile, the operation signals of the driver are collected, whether intelligent starting and stopping are executed or not is judged, and the intelligent monitoring and control functions are achieved. When a driver steps on a brake and the vehicle is parked and idled, the engine automatically stops; when the driver steps on the accelerator pedal or releases the brake, the engine is intelligently started.

Of course, the system function is automatically started along with the work of the ignition system of the vehicle, and the driver can also manually release the idle start-stop function.

However, in actual use, the main problems with this approach are as follows:

southern heavy rainstorms tend to accumulate water in low-lying areas, and most drivers are not car professionals and rarely turn off the idle start-stop system manually. The idling start-stop system of the engine is automatically started after the ignition of the vehicle, and the damage caused by the secondary start of the engine in a wading state can be caused because a driver forgets to close the idling start-stop function at a critical moment.

When heavy rainfall occurs, the vehicle passes through a road section with deep accumulated water, if the idling start-stop system is not closed, once the vehicle is stopped in a blocked idling mode in the water, the idling start-stop system can automatically stop the engine, and then the engine is automatically started, so that secondary damage to the engine is easily caused. The connecting rod of the engine is deformed, the piston and the cylinder body are damaged, and the engine is scrapped seriously. Even if a driver purchases the automobile damage, the damage of the engine is caused by the secondary starting after the automobile is waded, an insurance company does not pay, and meanwhile, the maintenance and the replacement of the engine can cause the serious depreciation of the automobile and great economic loss is caused to the driver. Many drivers turn off the idle speed starting and stopping function first after getting on the vehicle to start the vehicle, even professional people specially design plug-ins which can prevent the engine from being automatically started after the idle speed starting and stopping function is started along with the ignition of the vehicle, and the high-tech technology which accords with the national policy of environmental protection, energy conservation and emission reduction is directly forbidden.

We find the following relevant patents relating to the automatic idle stop and go function: application No.: 201610712541.6, title of the invention: the invention relates to a control device for an engine idling start-stop system, which comprises a rainfall sensor and a humidity sensor which are respectively connected to an idling start-stop control unit, wherein when the rainfall sensor acquires that the current rainfall is too large or the humidity sensor acquires that the humidity in a vehicle is too high, the idling start-stop control unit transmits a control signal to a vehicle ECU, the vehicle ECU outputs an idling start-stop closing signal to the idling start-stop system, and the idling start-stop system closes an automatic start-stop function. By adopting the structure, the damage to the engine caused by secondary ignition of the engine under the states of wading flameout and starting of the idling start-stop system is avoided. Meanwhile, the problem that the fog in the vehicle is large due to the fact that the air conditioner is turned off when the system is started and stopped at the idling speed is avoided. The patent application provides only a system block diagram, and an implementation circuit is not disclosed; the unit price of the rainfall sensor is more than 150 yuan, and the program modification is carried out aiming at the ECU of the existing automobile, so the modification is difficult to implement.

Disclosure of Invention

The invention aims to solve the technical problems and provides a system and a method for shutting down the idling start-stop function of an engine through a windscreen wiper gear, which have the advantages of low cost and convenience in modification.

In order to achieve the purpose, the technical scheme of the invention is as follows:

a system for shutting down an engine idling start-stop function through a wiper gear comprises a power supply I, a power supply II, a wiper high-speed gear control unit and an idling start-stop control unit, wherein one end of the wiper high-speed gear control unit is connected with the positive electrode of the power supply I, and the other end of the wiper high-speed gear control unit is grounded; the idle speed opens stops the control unit and stops circuit and manual control idle speed including the idle speed of establishing ties and open the start-stop button K3 that stops the circuit break-make, open a termination power II's of stopping button K3 anodal, the idle speed opens the one end ground connection that stops the circuit, a light emitting diode VL of establishing ties before the windscreen wiper high-speed gear control unit, still be equipped with the light energy signal that is used for absorbing the light emitting diode VL and then trigger the idle speed and open the monitoring control unit that the circuit closed that stops between windscreen wiper high-speed gear control unit and the idle speed start-stop control unit, the monitoring control unit includes:

a power supply III for supplying electric energy to the electric appliance element of the monitoring control unit;

the phototriode VT is used for absorbing a light energy signal of the light emitting diode VL, converting the absorbed light energy into electric energy and amplifying current;

the triode V1 amplifies and conducts the current of the phototriode VT, the emitting electrode of the phototriode VT is connected with the base electrode of the triode V1, the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive electrode of a power supply III, and the emitting electrode of the triode V1 is connected with the negative electrode of the power supply III;

a capacitor C1 for isolating direct current and passing alternating current; the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with the anode of a capacitor C1, and the cathode of the capacitor C1 is connected with the cathode of a power supply III;

the 555 chip is used for monitoring current signals and further judging whether the output level is high, wherein a pin 1 of the 555 chip is grounded, pins 2 and 6 are connected with the anode of a capacitor C1, and pins 4 and 8 are connected with the anode of a power supply III;

a relay KM1 for closing the idling start-stop circuit; one end of a coil of the relay KM1 is connected with a pin 3 of the 555 chip, a main contact K1-1 of the relay KM1 is connected with two ends of a start-stop button K3 in parallel, one end of the main contact K1-1 is connected with the anode of a power supply II, and the other end of the main contact K1-1 is connected with an idle speed start-stop circuit;

the relay KM2 is used for disconnecting the coil circuit of the relay KM1 and preventing the secondary triggering of the idling start-stop circuit; one end of a main contact K2-1 of the relay KM2 is connected with the other end of the coil of the relay KM1, and the other end of the main contact K2-1 is connected with the anode of a power supply III; an auxiliary contact K1-2 of the relay KM1 is connected with an auxiliary contact K2-2 of the relay KM2 in parallel, one end of the parallel connection is connected with the anode of a power supply III, the other end of the parallel connection is connected with one end of a coil of a relay KM2, and the other end of the coil of the relay KM2 is connected with the cathode of the power supply III.

As a further technical scheme, the monitoring control unit further comprises a capacitor C2 and a diode D1, wherein the positive electrode of the capacitor C2 is connected with the pin 5 of the 555 chip, and the negative electrode of the capacitor C2 is connected with the negative electrode of the power supply III; the anode of the diode D1 is connected with the pin 3 of the 555 chip, and the cathode of the diode D1 is connected with the anode of the power supply III.

As a further technical scheme, the main contact K1-1 is a normally open contact, and the auxiliary contact K1-2 is a normally open contact.

As a further technical scheme, the main contact K2-1 is a normally closed contact, and the auxiliary contact K2-2 is a normally open contact.

A method of shutting down an engine idle start stop function via a wiper gear as described above, comprising the steps of:

s1, starting the vehicle, and automatically starting the idling start-stop function of the engine;

s2, judging whether to open the wiper high-speed control unit according to the rainfall driver or the system; if not, continuing to keep the engine idling start-stop function working; if yes, go to step S3;

s3, acquiring a conduction signal of the wiper high-speed control unit, and starting the monitoring control unit by using the conduction signal;

s4, detecting the instantaneous potential difference in the control unit after the conduction, and outputting a level signal;

s5, controlling a relay KM1 to trigger an idling start-stop circuit to be closed based on the level signal;

s6, the coil circuit of the relay KM1 is opened.

As a further technical solution, the conduction signal of the wiper high-speed control unit is a light energy signal of the light emitting diode VL.

As a further technical solution, the start-up monitoring control unit switches on the phototransistor VT by absorbing the light energy signal of the light emitting diode VL, and the triode V1 is switched on after the current is amplified by the phototransistor VT.

As a further technical solution, in the step S4, the 555 chip detects a transient current change from nothing to nothing at the collector connecting terminal of the phototransistor VT and the triode V1, so that the port potentials of the pins 2 and 6 of the 555 chip are reduced to generate a potential difference, and thus the pin 3 of the 555 chip outputs a level signal.

As a further technical scheme, the control relay KM1 triggers the idle speed start-stop circuit, and a coil of the relay KM1 is switched on based on an output level signal, so that a main contact K1-1 connected in front of the idle speed start-stop circuit is closed and conducted to trigger the idle speed start-stop circuit.

As a further technical solution, after the coil of the relay KM1 is turned on, the coil of the relay KM2 is turned on by using the auxiliary contact K1-2, the main contact K2-1 of the subsequent electric appliance KM2 is turned on and is turned off, the auxiliary contact K2-2 is closed, and then the current only passes through the auxiliary contact K2-2 and the coil of the relay KM2, so that the coil of the relay KM1 is powered off.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention has lower cost and convenient modification.

The capacitor, the diode, the triode, the relay, the 555 chip and other elements used in the invention are common electrical elements in the field, the unit price of each element is less than 1 yuan, and the comprehensive cost is lower. In addition, the invention only needs to add electrical elements in the circuit, does not need to modify the program of the automobile, is convenient to modify and has more practicability.

2. The invention can reduce the economic loss of users.

In the real life, when a driver forgets to turn off the idling start-stop function of the vehicle in the process of using the vehicle in extreme weather, the accident that the water enters the vehicle engine and then the vehicle engine is restarted to cause huge property loss is caused, and the accident is frequently disputed with the claim settlement of an insurance company. The insurance company writes the contract terms of the claim rejection specially for the case, and the proportion of the accidents is not small. The invention closes the idling start-stop function by opening the high-speed gear of the windscreen wiper, avoids the damage of the engine caused by the automatic secondary start of the engine after wading flameout due to the work of the idling start-stop system under the special conditions of rainstorm, wading and the like, and can also obtain the claim of an insurance company and reduce the economic loss of a user.

3. The invention is simple and effective.

According to the invention, a driver does not need to search a key or a method for turning off the idling start-stop function, and only when the rainfall is so great that the driver turns the windscreen wiper to a high-speed gear according to habits, or the windscreen wiper is automatically turned to the high-speed gear by the rainfall sensor of the automobile, the idling start-stop circuit can be automatically triggered once to be turned off until the automobile is normally flamed out. The idling start-stop function cannot be forbidden under the normal condition, the driving habit of a driver is met, the method is simple and effective, the aim of ensuring the driver to reduce economic loss is fulfilled, and the national policy advocates of environmental protection, energy conservation and emission reduction are met.

Drawings

Fig. 1 is a circuit diagram of a system for shutting down an idle start-stop function of an engine through a wiper gear according to the present invention.

Reference numerals: 1-a wiper high-speed gear control unit, 2-a monitoring control unit and 3-an idle speed start-stop control unit.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited to the scope of the examples.

Example 1:

as shown in fig. 1, a system for shutting down an idle-speed start-stop function of an engine through a wiper gear comprises a power supply i, a power supply ii, a wiper high-speed gear control unit and an idle-speed start-stop control unit, wherein one end of the wiper high-speed gear control unit is connected with the positive electrode of the power supply i, and the other end of the wiper high-speed gear control unit is grounded; the idle speed opens stops the control unit and stops the start-stop button K3 that the circuit break-make was stopped to idle speed that the circuit was stopped including the idle speed of establishing ties and manual control idle speed, this manual opening that sets up for normal car or closing the switch that the idle speed opened and stops the circuit, open a termination power II's of start-stop button K3 anodal, the idle speed opens the one end ground connection that stops the circuit, a emitting diode VL of establishing ties before windscreen wiper high-speed grade control unit, windscreen wiper high-speed grade control unit and idle speed are stopped and are still be equipped with the light energy signal that is used for absorbing emitting diode VL and then trigger the idle speed and stop the monitoring control unit that the circuit was closed between the control unit, the monitoring control unit includes:

a power supply III for supplying electric energy to the electric appliance element of the monitoring control unit;

the phototriode VT is used for absorbing a light energy signal of the light emitting diode VL, converting the absorbed light energy into electric energy and amplifying current;

the triode V1 amplifies and conducts the current of the phototriode VT, the emitting electrode of the phototriode VT is connected with the base electrode of the triode V1, the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with one end of a resistor R1, the other end of the resistor R1 is connected with the positive electrode of a power supply III, and the emitting electrode of the triode V1 is connected with the negative electrode of the power supply III;

a capacitor C1 for isolating direct current and passing alternating current; the collector electrodes of the phototriode VT and the triode V1 are connected and then connected with the anode of a capacitor C1, and the cathode of the capacitor C1 is connected with the cathode of a power supply III;

the 555 chip is used for monitoring current signals and further judging whether the output level is high, wherein a pin 1 of the 555 chip is grounded, pins 2 and 6 are connected with the anode of a capacitor C1, and pins 4 and 8 are connected with the anode of a power supply III;

a relay KM1 for closing the idling start-stop circuit; one end of a coil of the relay KM1 is connected with a pin 3 of the 555 chip, a main contact K1-1 of the relay KM1 is connected with two ends of a start-stop button K3 in parallel, one end of the main contact K1-1 is connected with the anode of a power supply II, and the other end of the main contact K1-1 is connected with an idle speed start-stop circuit;

the relay KM2 is used for disconnecting the coil circuit of the relay KM1 and preventing the secondary triggering of the idling start-stop circuit; one end of a main contact K2-1 of the relay KM2 is connected with the other end of the coil of the relay KM1, and the other end of the main contact K2-1 is connected with the anode of a power supply III; an auxiliary contact K1-2 of the relay KM1 is connected with an auxiliary contact K2-2 of the relay KM2 in parallel, one end of the parallel connection is connected with the anode of a power supply III, the other end of the parallel connection is connected with one end of a coil of a relay KM2, and the other end of the coil of the relay KM2 is connected with the cathode of the power supply III. The main contact K1-1 is a normally open contact, and the auxiliary contact K1-2 is a normally open contact. The main contact K2-1 is a normally closed contact, and the auxiliary contact K2-2 is a normally open contact. Forming a self-locking circuit.

The monitoring control unit further comprises a capacitor C2 and a diode D1, the anode of the capacitor C2 is connected with the 5 pin of the 555 chip, and the cathode of the capacitor C2 is connected with the cathode of the power supply III; the anode of the diode D1 is connected with the pin 3 of the 555 chip, and the cathode of the diode D1 is connected with the anode of the power supply III. The capacitor C2 functions as dc blocking and filtering. The diode D1 is used for voltage stabilization, and when the 3-pin output voltage is higher than the power supply voltage, the relay KM1 does not work.

And the power supply I and the power supply II are both 12V voltage. And the power supply III is 5V.

Example 2:

a method of shutting down an engine idle start stop function via a wiper gear as in embodiment 1, comprising the steps of:

s1, starting the vehicle, and automatically starting the idling start-stop function of the engine;

s2, judging whether to open the wiper high-speed control unit according to the rainfall driver or the system; if not, continuing to keep the engine idling start-stop function working, and at the moment, keeping the circuit of the monitoring control unit not conducted; if yes, go to step S3;

s3, acquiring a conduction signal of the wiper high-speed control unit, and starting the monitoring control unit by using the conduction signal; the conduction signal of the wiper high-speed gear control unit is a light energy signal of a light emitting diode VL; the start monitoring control unit is used for conducting a phototriode VT by absorbing a light energy signal of the light emitting diode VL, and conducting a triode V1 after the phototriode VT amplifies the current;

s4, detecting the instantaneous potential difference in the control unit after the conduction, and outputting a level signal; that is, the 555 chip detects the instantaneous current change from nothing to nothing at the collector connecting end of the phototriode VT and the triode V1, so that the port potentials of the 2 pin and the 6 pin of the 555 chip are reduced, potential difference is generated, and a 3 pin output level signal of the 555 chip is obtained.

S5, controlling a relay KM1 to trigger an idling start-stop circuit to be closed based on the level signal; the control relay KM1 triggers the idling start-stop circuit, a coil of the relay KM1 is switched on based on a level signal output in the step S4, so that a main contact K1-1 connected in front of the idling start-stop circuit is closed and conducted, the idling start-stop circuit is triggered and closed, and the defect that an engine is damaged due to secondary ignition of the engine in a wading state by an idling start-stop system in the existing market is overcome;

s6, a coil circuit of the relay KM1 is disconnected, after a coil of the relay KM1 is connected, the coil of the relay KM2 is connected by using an auxiliary contact K1-2, a main contact K2-1 of a subsequent electric appliance KM2 is connected and disconnected (namely the coil circuit of the relay KM1 is disconnected), the auxiliary contact K2-2 is closed, then current only passes through the auxiliary contact K2-2 and the coil of the relay KM2, so that the coil of the relay KM1 is powered off, the main contact K1-1 is disconnected, an idle speed start-stop circuit is not triggered for the second time, and locking is achieved. When the whole vehicle is flamed out, the relay KM2 is reset in a power-down mode.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "leading," "trailing," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the invention and for simplicity in description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the scope of the invention. It is also to be understood that, unless expressly stated or limited otherwise, the terms "connected" and "coupled" are intended to be open-ended, i.e., may be fixedly connected; can be a detachable connection; or may be a point connection; may be a direct connection; may be indirectly connected through an intermediate medium, may communicate between the two elements, and those skilled in the art will understand the specific meaning of the above terms in the present invention in specific situations. The connection of the devices, which is not described in detail in the present invention, is understood in the conventional manner in the art.

The above-described embodiments are only specific examples for further explaining the object, technical solution and advantageous effects of the present invention in detail, and the present invention is not limited thereto. Any modification, equivalent replacement, improvement and the like made within the scope of the present disclosure are included in the protection scope of the present invention.