TWI460088B - A vehicle idling stop control device with warning light of warning light - Google Patents

Description

Vehicle idle speed control device with warning effect of vehicle lights

The invention relates to a vehicle idle speed automatic ignition (Idle Stop) control device, in particular to an idle speed flameout control method and device which also activates a brake warning light to improve safety protection effect when an idle speed flameout function is required to be started immediately.

As electronic technology continues to evolve and new models are introduced in the market, the added functionality of the vehicle itself increases, providing users with a more user-friendly and more convenient control interface. In recent years, as environmental awareness has gradually warmed up, vehicle-related industries have also developed towards this goal in the development of new technologies. For example, the function of Idle Stop is to hope that under certain preset conditions, through oil cut or power cut. The method automatically controls the engine to extinguish, which on the one hand reduces energy consumption, and on the other hand reduces exhaust emissions to reduce air pollution and slow down warming.

The technology for automatically extinguishing the control engine has been found in related patent documents, such as the domestic invention publication No. I268881, "The device for controlling the temperature of a car to be extinguished by fire", the main point of which is that when the engine is still in a high heat state, the driver is disconnected from the key. When the point is reached, the battery can be automatically connected to the current of the electronic control unit of the car, so that the engine continues to drive the cooling system to circulate in an idle state until the engine temperature drops to the normal range, and then the engine is completely extinguished, so the case is not in the idle condition. The lower control engine automatically turns off.

Furthermore, in the domestic new bulletin No. M318291, the "Automotive Remote Diagnosis and Control System" uses the wireless channel signal transmission to allow one. The remote server issues a TCP/IP protocol control command, and the wireless control device is installed in the vehicle's control module to perform data acquisition and control on the vehicle. A vehicle-mounted microcontroller, although mentioned in the patent application scope, can be controlled. The engine is started or turned off, but the patent does not disclose in detail under what conditions it is necessary to control the engine to start or turn off. Only according to its prior art, it can be speculated that the remote control of the control engine is turned off in order to respond to the theft of the vehicle. It can be anxious to force the vehicle to drive. This patent has nothing to do with the setting control of the idle stop.

The domestic new model M358333 patent "locomotive parking stop controller" is used to count down when the locomotive stops. When the countdown is over, the power of the locomotive circuit is cut off, so that the locomotive is completely turned off.

Most of the traditional methods of achieving idle speed are achieved by using a separate controller with various sensors. After receiving various information provided by each sensor, the controller integrates and judges whether a control command can be sent to command. Engine stalling In this idle-extinguishing state, all warning lights on the vehicle are completely extinguished, and only when the driver starts the brake (for example, holding the brakes of the locomotive), the brake lights are illuminated.

It is quite inconvenient to require the driver to manually activate the braking function every time the idling is turned off. It is difficult to generally require every driver to do it; but when the warning light is completely extinguished, the driver can say that it is In a relatively dangerous and unprotected situation, such as when the driver is driving at night and facing an idling turn-off, since the various warning lights of the vehicle are completely extinguished, the rear car cannot clearly identify the situation ahead, and the vehicle in front is extremely It is vulnerable to chasing from the rear vehicle, and it will damage the car body, and it will cause irreparable damage to personal life safety.

In view of the fact that the existing vehicle lacks the necessary warning effect in the case of idling, and is prone to accidental impact from the rear vehicle, the main object of the present invention is to provide a vehicle idle speed control device with a warning function of the vehicle light, which is judged to meet the idling flameout condition. At that time, the vehicle's lights are automatically illuminated to provide an active warning effect to ensure the driver's driving safety.

In order to achieve the foregoing objective, the vehicle idle speed control device with the vehicle light warning function includes: an electronic control unit that provides vehicle status information, and the vehicle status information includes throttle opening (TPS) and engine speed (rpm). ), battery voltage and engine temperature; an idle speed extinguishing controller, which has an idle stop determination condition and is connected to the electronic control unit to receive vehicle status information, and the idle speed controller controls the vehicle status information and the idle speed determination condition Comparing to determine whether to output an idle stop command to control the fuel nozzle of the vehicle to stop the fuel injection, the idle stop controller has a driving light driving circuit inside; a driving light is connected to the braking light driving circuit of the idle extinguishing controller When the idle stop controller issues the idle stop command, it is driven to illuminate; a battery provides DC voltage to the idle stop controller, electronic control unit and fuel nozzle.

With the foregoing device, when the idle stop controller determines that the idle stop function is to be started according to the received various vehicle state 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. At the same time, the DC voltage outputted by the battery is supplied to the brake light. The present invention synchronously illuminates the brake light without artificial operation, and automatically generates a warning effect to alert the surrounding vehicle to avoid accidental collision.

Please refer to FIG. 1 , which is a block diagram of the circuit connection between an idle stop controller 100 and a battery 200 , a main switch 300 , an electronic control unit 400 (ECU), a fuel nozzle 500 , and a brake lamp 600 inside the vehicle. In the following description, the application to the locomotive will be described in detail as an embodiment, but the present invention can be applied to various vehicles requiring an Idol stop function, and is not limited to the locomotive field.

The battery 200 is electrically connected to the idle reduction 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 battery 200 outputs a DC voltage to the idle reduction controller 100. Electronic control unit 400 and fuel nozzle 500.

Taking a locomotive with an injection engine as an example, the electronic control unit 400 of the locomotive has been connected to various sensors of the vehicle itself, so that various vehicle status information such as throttle opening (TPS), engine speed (rpm), battery voltage, The engine temperature and the like, and the idle reduction controller 100 of the present invention is integrated with the electronic control unit 400 in the control system of the vehicle body, receives various vehicle status information provided by the electronic control unit 400, and comprehensively determines whether or not based on the vehicle status information. The idle stop function needs to be activated. When it is judged that the idling stop function must be started, the idling stop controller 100 outputs an idling stop command to control the fuel nozzle 500 to stop the fuel nozzle 500 from injecting fuel.

The brake light 600 is connected to one of the control ends of the idle stop controller 100. When the idle stop function is activated, the idle stop controller 100 is the same The signal is output to drive the brake light 600, and the brake light 600 is activated to provide an alert.

Referring to FIG. 2, the idle speed controller 100 is internally provided with a driving light driving circuit. The braking light driving circuit includes: a relay 110 having an exciting coil 111, a first output contact 112, and a second The output contact 113 and a switching contact 114, one end of the excitation coil 111 receives a DC voltage, the direct voltage can be provided by the battery 200; the first output contact 112 is connected to the fuel nozzle 500; the second output contact 113 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 113 according to the excitation of the excitation coil 111; The body 120 is connected in reverse phase to both ends of the excitation coil 111. The negative terminal of the diode 120 is connected to the DC voltage. A switching element 130 is connected between the other end of the excitation coil 111 and the ground. The component 130 can be formed by a transistor, the collector of which is connected to the excitation coil 111, the emitter is grounded, the base serves as a control terminal to receive a driving voltage, and a voltage dividing circuit 140 is connected to the control terminal of the switching component 130. Can be The two resistors are configured to divide a voltage signal (eg, 5V) from a microprocessor 150 into a driving voltage (eg, 2.5V) required by the switching element 130; the microprocessor 150 is internal to the idle-off controller 100 The data operation unit has built-in various judgment conditions such as throttle opening degree (TPS), engine speed (rpm), battery voltage, engine temperature, etc., and comprehensively analyzes various vehicle status information to determine whether it should be started. Idle speeding off function.

For the foregoing idle speed flameout determination condition, a set of setting parameters is provided here as an example, but it is not limited to the inevitable use of the set of parameters. For example, 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 an upper limit, whether the battery voltage exceeds an upper limit, and whether the wheel speed is lower or lower can be determined. A set frequency, when all the conditions are established and maintained for a short time, it is determined that the vehicle is currently in a non-moving idle state, so the idle stop can be started.

When the vehicle is in normal operation without starting the idle-stop function, the microprocessor 150 does not emit a voltage signal, so the switching element 130 is in the off-conducting state, so no current can flow through the exciting coil 111 of the relay 110, and the power supply The node 114 maintains electrical contact with the first output contact 112 to enable the DC voltage output by the battery 200 to be supplied to the fuel nozzle 500 to maintain normal running of the vehicle.

When the microprocessor 150 determines that the idle stop function is to be started according to the received various vehicle status information, the microprocessor 150 sends a voltage signal, and the voltage dividing circuit 140 divides the voltage signal into a driving voltage, so that the switching element 130 receives The driving voltage is turned on. When the switching element 130 is turned on, a current is generated by the current passing through the exciting coil 111 of the relay 110, and the power supply node 114 is switched to the second output contact 113 by the magnetic force. The contacts change the power of the battery 200 to the brake light 600, and illuminate the brake light 600 to generate an automatic warning effect. The maintenance time of the brake light 600 is preset to be internal to the microprocessor 150, for example, for 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 make the brake light. 600 is extinguished.

At the moment when the switching element 130 is turned from on to off, the relay 110 Since the upper excitation coil 111 is an inductive component, there is still a part of the accumulated energy. At this time, the diode 120 provides an energy consumption loop, so that the energy on the excitation coil 111 can be consumed by the diode 120.

Please refer to FIG. 3 , which is a flowchart of the vehicle idle speed control method of the present invention, including the following steps: enabling the idle speed flameout function ( 301 ), that is, enabling the idle speed extinguishing function on the vehicle, and the enabling mode thereof There are slight differences in the design of different models. For example, an idle stop function switch can be provided on the vehicle. The driver decides whether to enable the idle stop function when driving; read and integrate the judgment of vehicle status information (302). The idle speed controller 100 receives various vehicle status information, such as throttle opening degree (TPS), engine speed (rpm), battery voltage, engine temperature, etc., according to the collected data, whether to perform idle speed extinguishing; if yes, execute In the next step, if not, repeating the reading and integrating the step of determining the vehicle status information (302); outputting an idle stop command (303), when the idle stop controller 100 determines that the various conditions of the idle stop are met, That is, an idling stop command is output, and the fuel nozzle is controlled to stop the fuel injection, thereby controlling the engine to automatically turn off the fire, and at the same time, driving the illuminating lamp of the vehicle at the same time. The brake lamp is lit continuously period of time (304), the idle stop controller 100 controls the brake system to maintain the lamp 600 is lit for a predetermined time, the brake lamp 600 goes out when the control reaches a preset time.

In summary, the present invention not only provides the vehicle idle-stopping, but also achieves the function of saving gasoline consumption, and can automatically illuminate the brake light in the state of idle-stopping, and the user does not need to deliberately control. Produced by the lights A more convenient warning effect allows the driver of other vehicles to notice clearly that the vehicle in front of them has been suspended on the road, reducing the chance of accidental collision.

100‧‧‧Idle speed controller

110‧‧‧ relay

111‧‧‧Exciting coil

112‧‧‧First output contact

113‧‧‧Second output contact

114‧‧‧Switch contacts

120‧‧‧ diode

130‧‧‧Switching elements

140‧‧‧voltage circuit

150‧‧‧Microprocessor

200‧‧‧ battery

300‧‧‧Main switch

400‧‧‧Electronic Control Unit

500‧‧‧ fuel nozzle

600‧‧‧煞lights

Figure 1 is a block diagram of the overall circuit of the present invention applied to the interior of a vehicle.

Fig. 2 is a circuit diagram showing the driving of the brake lamp of the present invention.

Figure 3: Flow chart of the method of the present invention.

100‧‧‧Idle speed controller

150‧‧‧Microprocessor

200‧‧‧ battery

300‧‧‧Main switch

400‧‧‧Electronic Control Unit

500‧‧‧ fuel nozzle

600‧‧‧煞lights

Claims (2)

A vehicle idle speed control device with a warning effect of a vehicle light includes an electronic control unit for providing vehicle status information including throttle opening (TPS), engine speed (rpm), battery voltage and engine Temperature; an idle stop controller having an idle stop determination condition and connected to the electronic control unit to receive vehicle status information, the idle stop controller comparing the vehicle status information with an idle stop determination condition to determine whether to output An idle stop command is used to control the fuel nozzle of the vehicle to stop the oil supply. The idle stop controller has a driving light driving circuit inside; a driving light is connected to the idle light driving controller of the idle speed extinguishing controller, and the idle speed extinguishing controller The idling stop command is issued while being driven to illuminate; a battery provides a DC voltage to the idling stop controller, the electronic control unit and the fuel nozzle; wherein the brake lamp drive circuit comprises: a relay having an excitation a coil, a first output contact, a second output contact, and a switching contact, One end of the excitation coil receives the DC voltage of the battery, the first output contact is connected to the fuel nozzle, and the second output contact is connected to the brake light, one end of the switching contact receives the DC voltage, and the other end switches To the first output contact or the second output contact; a diode connected in anti-phase to both ends of the excitation coil, the negative end of the diode is connected to the DC voltage; a switching element Connected between the excitation coil and the ground, the opening The off component has a control terminal for receiving a driving voltage; a voltage dividing circuit is connected to the control terminal of the switching component, and the voltage dividing circuit divides a voltage signal output by a microprocessor into the switching component required The driving voltage; and the microprocessor built the aforementioned idle-speed flameout determination condition, and after analyzing the vehicle state information, determining whether the voltage signal should be output. For example, the vehicle idle speed control device with the warning effect of the vehicle lamp according to the first aspect of the patent application includes the throttle opening degree (TPS), the engine speed (rpm), the battery voltage and the engine temperature.