CN208036090U - The optimal controller of turn signal failure when a kind of vehicle hazard alarm lamp flicker - Google Patents

Abstract

An optimized controller for steering signal failure when a car hazard warning light flashes, including a signal input terminal, a control device and a signal output terminal, the signal input terminal includes an input A terminal and an input B terminal, and the input A terminal and the input B terminal are respectively connected to the steering The output terminals of the "left turn" and "right turn" of the switch, the signal output terminals include the input E terminal and the output F terminal, the output E terminal and the output F terminal are connected to the output signal line of the disconnected hazard warning light switch; the control The device includes a normally closed relay, a switch tube VT, a first resistor Ra, a second resistor Rb and a third resistor Rc, the emitter of the switch tube VT is connected to the ground terminal, and the collector and emitter of the switch tube VT are connected to the The coil of the normally closed relay is described, and the two ends of the normally closed contact of the normally closed relay are respectively connected to the output E terminal and the output F terminal. The utility model provides an optimized controller which is convenient for refitting and optimization and has low cost, and the steering signal fails when the danger alarm lamp of an automobile flashes.

Description

An optimized controller for turning signal failure when the hazard warning lights of automobiles are flashing

technical field

The utility model belongs to the technical field of automobiles, and relates to circuit optimization of automobile danger warning lamps and turn signal lamps, in particular to an optimized controller which can still realize the indication of the turn signal lamps after the danger warning lights are turned on.

Background technique

Hazard warning lights in cars, commonly known as double flashing lights or double jumping lights, are generally used when encountering dense fog, vehicle failure, sudden heavy rain during driving, emergency failure during driving, temporary parking on the road, traffic accidents of vehicles, traction It is used when a motor vehicle fails, etc., so as to remind other vehicles or passing pedestrians to pay attention to the special situation of the vehicle.

In many existing vehicles, after the switch of the hazard warning lights is turned on, the turn-on of the steering switch is invalid, that is, after the steering switch is manipulated, the "double-jump" state of the hazard warning lights is still in effect, which is actually very dangerous in the driving process and greatly Increased the unsafe factors of vehicle driving. For example, when driving in special weather conditions such as dense fog and sandstorms, the driver will generally turn on the hazard warning lights, but if it is necessary to turn or change lanes at this time, the driver will habitually manipulate the steering switch, and At this time, the hazard warning lights are actually still "double flashing" or "double jumping" functions, which can easily give inappropriate prompts to passing vehicles, especially rear vehicles, and can easily cause traffic accidents. Therefore, "the steering switch manipulation fails when the hazard warning light of the automobile is flashing" can be characterized as a "defect" in the automobile design.

In view of the above existing problems, the existing Chinese patent publication discloses a car hazard warning flasher circuit [application number CN201510432058.8]. The car hazard warning flasher circuit includes a left turn signal, a right turn signal and a power supply. One end of the power supply The hazard warning light switch and the steering switch are also connected in sequence. The hazard warning light switch has a power interface, a control interface 1 and a control interface 2. The power supply interface is connected to one end of the power supply. Connect to the input interface 1 of the turn switch. The turn switch also includes a left output interface and a right output interface. The left output interface is connected to one end of the left turn signal, the right output interface is connected to one end of the right turn signal, and the other end of the left turn signal and the right turn signal Connect to the other end of the power supply respectively. This circuit realizes the purpose of turning priority of the turn signal light of ordinary control, but it is inconvenient to modify and optimize the electronically controlled in-use vehicles that have been put on the market.

Contents of the invention

In order to overcome the inconvenient modification and optimization and high cost disadvantages of the existing automobile hazard warning flashing light circuit, the utility model provides an optimized controller that is easy to refit and optimize and has low cost when the steering signal fails when the automobile danger warning light flashes. .

The technical scheme that the utility model solves its technical problem adopts is:

An optimized controller for steering signal failure when a car hazard warning light flashes, the optimized controller includes a signal input end, a control device and a signal output end, the signal input end includes an input A end and an input B end, and the input The A terminal and the input B terminal are respectively connected to the output terminals of the "turn left" and "right turn" of the steering switch, and the signal output terminal includes an input E terminal and an output F terminal, and the output E terminal and the output F terminal are connected to the Disconnect the output signal line of the hazard warning light switch; the control device includes a normally closed relay, a switch tube VT, a first resistor Ra, a second resistor Rb and a third resistor Rc, and the external power supply is connected to one end of the first resistor Ra respectively. It is connected to one end of the third resistor Rc, the other end of the third resistor is connected to the collector of the switching tube VT, the other end of the first resistor Ra is connected to the intermediate node, and the input A end is connected to the first The diode D1 is connected to the intermediate node, the input B terminal is connected to the intermediate node through the second diode D2, and the intermediate node is connected to the base of the switching transistor VT through the second resistor Rb, The emitter of the switching tube VT is connected to the ground terminal, and the coil of the normally closed relay is connected between the collector and the emitter of the switching tube VT at the same time, and the two ends of the normally closed contact of the normally closed relay are respectively connected to the The output E terminal is connected with the output F terminal.

The technical idea of the utility model is: the input terminal A and the input B terminal of the signal input are respectively connected to the corresponding output terminals of the "turn left" and "turn right" of the steering switch, and the control device introduces a logic circuit and a normally closed relay for combined design . When installing, the output circuit of the hazard warning light switch needs to be disconnected and connected to the terminal E and terminal F of the "optimized controller", so that once the controller receives the low signal of "turn left" or "turn right", Potential signal, the normally closed relay in the controller is disconnected, and the signal output circuit of the danger alarm switch is automatically cut off, so as to realize the normal steering indication function. According to the analysis of the working status of the turn signal lights and hazard warning lights, the normal indication function of the turn signal lights can be realized after the hazard warning flashing lights are turned on; after the turn switch is reset, the "double-jump" indication of the danger warning lights can be automatically restored Function, fully reaches the purpose requirement of the present utility model.

The beneficial effects of the utility model are mainly manifested in: simple structure, reliable operation, convenient installation and low production cost.

Description of drawings

Figure 1 is a signal circuit diagram of the steering switch and hazard warning light switch of a general-purpose vehicle.

Figure 2 is a schematic diagram of the optimized controller circuit.

Fig. 3 is a schematic circuit diagram of the system after adding an optimized controller.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is further described.

With reference to Fig. 2 and Fig. 3, a kind of optimization controller of steering signal failure when automobile danger warning light flickers, described optimization controller comprises signal input end, control device and signal output end, and described signal input end comprises input A end and Input the B terminal, the input A terminal and the input B terminal are respectively connected to the output terminals of the "turn left" and "right turn" of the steering switch, and the signal output terminal includes an input E terminal and an output F terminal, and the output E terminal and the output F terminal are connected to the output signal line of the switch of the danger warning light; the control device includes a normally closed relay, a switch tube VT, a first resistor Ra, a second resistor Rb and a third resistor Rc, and the external power supply is respectively It is connected to one end of the first resistor Ra and one end of the third resistor Rc, the other end of the third resistor is connected to the collector of the switching transistor VT, and the other end of the first resistor Ra is connected to the intermediate node, so The input A terminal is connected to the intermediate node through the first diode D1, the input B terminal is connected to the intermediate node through the second diode D2, and the intermediate node is connected to the switch through the second resistor Rb The base of the tube VT is connected, the emitter of the switching tube VT is connected to the ground terminal, and the coil of the normally closed relay is connected between the collector and the emitter of the switching tube VT, and the normally closed relay of the normally closed Both ends of the contact are respectively connected to the output E terminal and the output F terminal.

Table 1 is a schematic diagram of the working state of the optimized controller:

Table 1

As shown in Figure 3, the optimized controller is connected to the external power supply B ⁺ and the ground terminal, and the input A and input B are respectively connected to the output signals "left" and "right" of the steering switch; disconnect the output of the hazard warning light switch The two ends of the signal line are respectively connected to terminal E and terminal F of the optimization controller. When not turning, the input A and input B of the optimization controller are both high potential signals, D1 and D2 are not conducting, at this time the output C is high potential, VT is conducting, resulting in output D being low potential, and the relay coil is not When the power is turned on, the normally closed contact is still closed, and the hazard alarm light switch can normally control the hazard alarm flashing light, which meets the design requirements.

As shown in Figure 3, when the vehicle is running, if the hazard warning flasher is turned on, all the turn signal lights on the front, rear, left, and right sides will light up and flash. , B is still at a high potential, so that D1 is turned on, and D2 is still not turned on. At this time, the output C is at a low potential, and VT is not turned on, causing the output D to become a high potential. The relay coil is energized, and the normally closed contact is opened. The output signal of the hazard warning light switch is cut off. At this time, although the hazard warning light switch is in the engaged state, the body control module K9 cannot receive the low potential signal, thereby realizing the correct display function of the turn signal light; if the turn switch is manipulated to the right position , the control mechanism is similar, thus solving the problem that the steering signal fails when the car hazard warning light flashes, and achieving the design goal.

Claims (1)

1. an optimized controller for steering signal failure when a car hazard warning light flashes, it is characterized in that: said optimized controller includes a signal input end, a control device and a signal output end, and said signal input end includes an input A end and an input A end Terminal B, the input A terminal and the input B terminal are respectively connected to the output terminals of "turn left" and "turn right" of the steering switch, and the signal output terminal includes an input E terminal and an output F terminal, and the output E terminal and the output F end are connected to the output signal line of the switch of the danger warning light; the control device includes a normally closed relay, a switch tube VT, a first resistor Ra, a second resistor Rb and a third resistor Rc, and the external power supply is connected to the One end of the first resistor Ra is connected to one end of the third resistor Rc, the other end of the third resistor is connected to the collector of the switching transistor VT, the other end of the first resistor Ra is connected to the intermediate node, the The input A terminal is connected to the intermediate node through the first diode D1, the input B terminal is connected to the intermediate node through the second diode D2, and the intermediate node is connected to the switch tube through the second resistor Rb The base of the VT is connected, the emitter of the switching tube VT is connected to the ground terminal, and the coil of the normally closed relay is connected between the collector and the emitter of the switching tube VT, and the normally closed contact of the normally closed relay The two ends are respectively connected to the output E terminal and the output F terminal.