CN102444482B - Vehicle idling flameout control device with brake light warning effect - Google Patents

Abstract

The invention discloses a vehicle idling stop control method and a vehicle idling stop control device with a brake lamp warning effect, wherein the vehicle idling stop control device mainly comprises an idling controller, an electronic control unit and a brake lamp, a plurality of idling stop conditions are pre-built in the idling controller, the idling controller receives vehicle state information provided by the electronic control unit and compares the vehicle state information with the idling stop conditions, when the idling stop controller meets the conditions, the idling stop controller outputs an idling stop instruction to cut off an oil supply loop of a vehicle, the brake lamp of the vehicle is driven to be lightened at the same time, and the brake lamp is automatically lightened to achieve the warning effect on the premise that a driver does not need to manually operate the brake lamp, so that accidental overtaking collision is avoided to ensure the driving safety.

Description

Vehicle idling flameout control device with brake light warning effect

technical field

The invention relates to a vehicle idle stop control device, in particular to an idle stop control device which also activates a brake warning light when the idle stop function needs to be activated in real time to improve the safety protection effect.

Background technique

With the continuous development of electronic technology and the introduction of new models in the market, the additional functions of the vehicle itself will increase, bringing users a more humanized and convenient control interface. In recent years, due to the increasing awareness of environmental protection, the vehicle-related industries are also developing towards this goal when developing new technologies. For example, the function of idle stop (Idle Stop) is to hope that under certain preset conditions, it will This method automatically controls the engine flameout, on the one hand to reduce energy consumption, and on the other hand, it can reduce exhaust emissions to reduce air pollution and slow down warming.

The technology of controlling engine automatic flameout has been found in relevant patent documents, such as Taiwan Invention Publication No. I268881 patent case "A device for controlling vehicle flameout by temperature". It can automatically connect the current supplied by the battery to the electronic control unit of the car, so that the engine will continue to drive the cooling system to circulate at idle speed until the engine temperature drops to the normal range, and then completely turn off the engine. Therefore, this case is not controlled at idle speed. The engine shuts off automatically.

In addition, the Taiwan New Announcement No. M 318291 Patent Case "Automotive Remote Diagnosis and Control System" uses wireless network signal transmission to allow the remote server to issue control commands of the TCP/IP protocol, wirelessly controlling the control module installed in the vehicle to the vehicle. Carry out data acquisition and control the vehicle microcontroller, although its claim mentions that the engine can be controlled to start or stop, but the patent does not disclose in detail the conditions under which the engine needs to be controlled to start or stop, it can only be based on Its background technology section speculates that the remote wireless control of the engine shutdown is to deal with the stolen vehicle, and the owner can force the vehicle to be unable to drive in an emergency. This patent has nothing to do with the setting control of idling flameout.

Taiwan's new announcement M 358333 patent case "motorcycle parking and flameout controller" starts a countdown when the motorcycle is parked, and when the countdown is over, it cuts off the power supply of the motorcycle circuit to completely turn off the motorcycle.

The traditional implementation of idling flameout is mostly completed by using an independent controller with various sensors. After receiving various information provided by each sensor, the controller integrates and judges whether it can send a control command to order the engine to be turned off. In the state of idling and flameout, all warning lights on the vehicle are completely extinguished, and only when the driver activates the brake (such as continuously pressing the brake handle of the motorcycle), the brake light will be turned on.

It is quite inconvenient to require the driver to manually activate the brake function every time the engine is idling and it is difficult to generally require every driver to do it; but when the warning light is completely extinguished, the driver can be said to be in a relative position. More dangerous and lack of protection, for example, when the driver is driving at night and is facing idling, because the various warning lights of the vehicle are completely extinguished, the vehicles coming from behind cannot clearly identify the situation ahead, and the vehicle in front is very vulnerable to damage from the vehicle. The collision of the rear vehicle can cause damage to the vehicle body, and cause irreparable damage to personal life safety.

Contents of the invention

In view of the fact that the existing vehicles lack the necessary warning effect under the situation of idling and turning off, and are prone to accidental collisions with vehicles coming from behind, the main purpose of the present invention is to provide a vehicle idling and turning off control device with a brake light warning function, which can be used when judging whether the idling speed is met or not. When the engine is turned off, the brake light of the vehicle will be automatically turned on to provide an active warning effect to ensure the driving safety of the driver.

In order to achieve the aforementioned purpose, the vehicle idling flameout control device with brake light warning function of the present invention includes:

The electronic control unit provides vehicle status information, the vehicle status information includes accelerator opening (TPS), engine speed (rpm), battery voltage and engine temperature;

The idle stop controller has a built-in idle stop judgment condition and is connected to the electronic control unit to receive vehicle state information, and the idle stop controller compares the vehicle state information with the idle stop judgment condition to determine whether to output an idle stop command To control the fuel nozzle of the vehicle to stop fuel injection, the idle stop controller has a brake light driving circuit inside;

The brake light is connected to the brake light drive circuit of the idle flameout controller, and is driven to light up when the idle flameout controller issues the idle flameout command;

The storage battery provides a DC voltage to the idle stop controller, the electronic control unit and the fuel nozzle, wherein the brake light driving circuit includes: a relay having an excitation coil, a first output contact, a second output contact and a switching contact, and the excitation One end of the coil receives the DC voltage of the battery, the first output contact is connected to the fuel nozzle, the second output contact is connected to the brake light, one end of the switching contact receives the DC voltage, and the other end is switched to the first an output contact or the second output contact; a diode connected to both ends of the excitation coil in reverse phase, the negative end of the diode connected to the DC voltage; a switch element connected between the excitation coil and ground, the switch element It has a control terminal to receive the driving voltage; a voltage divider circuit is connected to the control terminal of the switch element, and the voltage divider circuit divides the voltage signal output by the microprocessor into the drive voltage required by the switch element; the The microprocessor has a built-in judging condition for idling and flameout, and judges whether to output the voltage signal after analyzing the vehicle state information.

With the aforementioned device, when the idle stop controller judges to start the idle stop function according to the received various vehicle status information, the idle stop controller outputs an idle stop command to interrupt the power supply of the fuel nozzle, so that the engine is turned off and the battery is turned off at the same time. The outputted DC voltage is supplied to the brake lights, and without manual operation, the present invention simultaneously lights up the brake lights to automatically generate a warning effect, so as to warn surrounding vehicles to avoid accidental collisions.

Description of drawings

Fig. 1 is the overall circuit block diagram that the present invention is applied to vehicle interior;

Fig. 2 is a brake light driving circuit diagram of the present invention;

Fig. 3 is a flow chart of the method of the present invention.

[Description of main component symbols]

100 idle flameout controller 110 relay

111 Exciting coil 112 The first output contact

113 Second output contact 114 Switching contact

120 diodes 130 switching elements

140 voltage divider circuit 150 microprocessor

200 battery 300 main switch

400 electronic control unit 500 fuel injector

600 brake lights

Detailed ways

Referring to FIG. 1 , it is a block diagram of the circuit connection between the idle stop controller 100 and the battery 200 , the main switch 300 , the electronic control unit 400 (ECU), the fuel nozzle 500 and the brake light 600 inside the vehicle. In the following description, the application to motorcycles will be described in detail, but the present invention can be applied to various vehicles that need to have the function of idle stop (Idol stop), and is not limited to the field of motorcycles.

The battery 200 is electrically connected to the idle stop controller 100, the electronic control unit 400 and the fuel nozzle 500 through the main switch 300. When the main switch 300 is turned on by the driver, the DC voltage is output from the battery 200 to the idle stop controller 100, and the electronic control unit Unit 400 and fuel nozzle 500.

Taking a motorcycle with a jet engine as an example, the electronic control unit 400 of the motorcycle has been connected to various sensors of the vehicle itself, so it can provide various vehicle status information, such as throttle opening (TPS), engine speed (rpm), battery Voltage, engine temperature, etc., while the idle stop controller 100 of the present invention and the electronic control unit 400 are integrated in the control system of the vehicle body, receive various vehicle state information provided by the electronic control unit 400, and make comprehensive judgments based on these vehicle state information Whether to activate the idle flameout function. When it is judged that the idle flameout function must be activated, the idle flameout controller 100 outputs an idle flameout command to control the fuel nozzle 500 so that the fuel nozzle 500 stops fuel injection.

The brake light 600 is connected to one of the control terminals of the idle stop controller 100. When the idle stop function is activated, the idle stop controller 100 simultaneously outputs a signal to drive the stop light 600, and activates the stop light 600 to provide a warning.

Referring to FIG. 2, the idle stop controller 100 is provided with a brake light driving circuit inside, and the brake light driving circuit includes:

The relay 110 has an excitation coil 111, a first output contact 112, a second output contact 113 and a switching contact 114. One end of the excitation coil 111 receives a DC voltage, which can be provided by the storage battery 200; the first output contact 112 is connected to the fuel Nozzle 500; the second output contact 113 is connected to the brake light 600; one end of the switching contact 114 receives the DC voltage, and the other end is switched to the first output contact 112 or the second output contact according to whether the excitation coil 111 is excited or not. 113;

A diode 120 is connected to both ends of the exciting coil 111 in antiphase, and the negative terminal of the diode 120 is connected to the DC voltage;

The switching element 130 is connected between the other end of the excitation coil 111 and the ground. The switching element 130 may be composed of a transistor, its collector is connected to the excitation coil 111, its emitter is grounded, and its base is used as a control terminal to receive the driving voltage;

The voltage divider circuit 140 is connected to the control terminal of the switch element 130, and can be composed of two resistors, which divides the voltage signal (such as 5V) from the microprocessor 150 to meet the required driving voltage (such as 2.5V) of the switch element 130. );

The microprocessor 150 is the internal data calculation unit of the idling flameout controller 100, and has built-in multiple judging conditions for whether the idling flameout should be started, such as throttle opening (TPS), engine speed (rpm), battery voltage, engine temperature etc. After comprehensively analyzing various vehicle state information, it judges whether the idle stop function should be activated.

A set of setting parameters is provided here as an example for the aforementioned idling flameout judging conditions, but it is not limited to necessarily use this set of parameters. For example, it can be determined whether the throttle opening is lower than the lower limit, whether the engine speed is lower than the lower limit, whether the engine temperature is higher than the upper limit, whether the battery voltage exceeds the upper limit, and whether the wheel speed is lower than the set value Frequency, when all conditions are established and maintained for a short period of time, it is determined that the vehicle is currently in a non-moving idle state, so the idle flameout can be activated.

When the vehicle is running normally without starting the idling flameout function, the microprocessor 150 does not send a voltage signal, so the switch element 130 is in a cut-off and non-conductive state, so no current can flow through the exciting coil 111 of the relay 110, and the The power supply node 114 maintains electrical contact with the first output contact 112 , so that the DC voltage output by the battery 200 can be supplied to the fuel nozzle 500 to maintain the normal running of the vehicle.

When the microprocessor 150 judges to start the idling stop function according to various received vehicle state information, the microprocessor 150 sends out a voltage signal, and the voltage dividing circuit 140 divides the voltage signal into a driving voltage, and the switching element 130 receives the driving voltage. The drive voltage turns into conduction. With the conduction of the switching element 130, a current passes through the exciting coil 111 of the relay 110 to generate a magnetic force. The contact changes the power of the storage battery 200 to output to the brake light 600, and lights the brake light 600 to generate an automatic warning effect. The maintenance time of the brake light 600 can be preset in the microprocessor 150, such as 3 minutes, when the preset time is up, the microprocessor 150 stops outputting the voltage signal, and the switch element 130 is turned off to activate the brake light. 600 goes out.

At the moment when the switch element 130 is turned from on to off, the excitation coil 111 on the relay 110 still has some energy accumulated because it is an inductive element. At this time, the diode 120 provides an energy consumption circuit, so that Energy can be dissipated by the diode 120 .

With reference to shown in Fig. 3, be the flow chart of vehicle idling flameout control method of the present invention, comprise the following steps:

Enabling the idling flameout function (301) means enabling (enable) the idling flameout function on the vehicle. The enabling method is slightly different due to the design of different vehicle models. For example, a vehicle may be provided with an idling flameout function switch. The person decides whether to enable the idling flameout function while driving;

Read and integrate and judge vehicle state information (302), use the idle stop controller 100 to receive various vehicle state information, such as accelerator opening (TPS), engine speed (rpm), battery voltage, engine temperature, etc., according to the collected judge whether it is necessary to perform idle stop; if yes, then execute the next step, if not, then repeat the step of reading and integrating and judging the vehicle state information (302);

Output idle flameout command (303), when idle flameout controller 100 judged that met the various conditions of idle flameout, promptly output idle flameout command, control fuel nozzle to stop fuel injection, thus can control engine flameout automatically, at the same time, Simultaneously drive and light the brake lights of the vehicle;

Continue to light the brake light for a period of time (304), the idle stop controller 100 controls the brake light 600 to remain on for a preset time, and controls the brake light 600 to turn off when the preset time arrives.

To sum up, compared with the traditional method, the present invention can not only provide the vehicle with the function of idling to save gasoline consumption, but also automatically turn on the brake lights in the state of idling, and the user does not need to deliberately control the brakes. The lights produce a more convenient warning effect, so that drivers of other vehicles can clearly notice that the vehicle in front of them has stopped on the road, reducing the probability of accidental collision.

Claims (2)

1. a vehicle idle stop control device for tool brake lamp warning effect, comprising:

Electronic control unit, provides car status information, and described car status information comprises accelerator open degree (TPS), engine speed (rpm), battery voltage and engine temperature;

Idling flameout controller, inside have idling flameout Rule of judgment and connect described electronic control unit to receive car status information, described idling flameout controller by these car status information compared with idling flameout Rule of judgment to determine whether export idling flameout instruction to control the fuel nozzle fuel cut-off of vehicle, described idling flameout controller inside has stop lamp drive circuit;

Brake lamp, connects the stop lamp drive circuit of described idling flameout controller, while idling flameout controller sends described idling flameout instruction, is lighted by driving;

Storage battery, provides VDC to idling flameout controller, electronic control unit and fuel nozzle,

Wherein, described stop lamp drive circuit comprises:

Relay, there is field coil, the first output contact, the second output contact and two-way contact, one end of described field coil receives the VDC of storage battery, described first output contact connects fuel nozzle, described second output contact is connected to brake lamp, one end of described two-way contact receives described VDC, and the other end switches to described first output contact or described second output contact;

Diode, the anti-phase two ends being connected to field coil, the negative terminal of described diode connects described VDC;

Switching element, is connected between field coil and ground connection, and described switching element has control end to receive driving voltage;

Bleeder circuit, is connected to the control end of described switching element, and the voltage signal dividing potential drop that microprocessor exports by described bleeder circuit becomes the driving voltage needed for described switching element;

The built-in described idling flameout Rule of judgment of described microprocessor, it judges after analyzing car status information should the described voltage signal of no output.

2. the vehicle idle stop control device of tool brake lamp warning effect according to claim 1, described idling flameout Rule of judgment comprises accelerator open degree (TPS), engine speed (rpm), battery voltage and engine temperature.