CN202448823U - Automobile high beam and low beam automatic switching device - Google Patents

Abstract

The utility model provides an automatic switching device for far and low beams of an automobile, which belongs to the technical field of machinery. It solves the problem that most of the far and low beams of existing automobiles cannot be switched automatically. The automatic switching device for high and low beams of automobiles, the automatic switching device for high and low beams of automobiles includes a control unit, a sensor unit electrically connected with the control unit, and a switch electrically connected with the control unit Circuit; the switching circuit includes a power supply, a high beam light and a low beam light connected in parallel with the power supply, and a relay. The automatic switching device of the far and low beams of the automobile is provided with a relay in the switching circuit; the control unit judges that the high and low beams need to be switched according to the information detected by the sensor unit, and starts the relay to switch the far and near lights; thus it is not only convenient to use, but also Stable performance and high degree of automation.

Description

Automatic switching device for high and low beams of automobiles

technical field

The utility model belongs to the technical field of automatic control and relates to the control of far and low beams of automobiles, in particular to an automatic switching device for far and low beams of automobiles.

Background technique

With the development of society, people's living standards are getting higher and higher; the number of motor vehicles in our country is increasing day by day, especially private cars, tool carts, and taxis. In densely populated places such as urban areas and towns, the hidden dangers of accidents also increase synchronously, especially when driving at night with turn signals, because there is no automatic switching device for high and low beams, the probability of hidden dangers of accidents increases.

As we all know, according to the requirements of traffic rules: when a motor vehicle turns at night, it must not only turn on the turn signal in advance and slow down, but also the high beam must be changed to low beam; and when the car passes by, the high beam should also be turned to Low beam lights. In fact, many drivers often neglect the switching of the high and low beams; as a result, due to the glare of the high beams, the oncoming vehicle drivers and pedestrians are visually obstructed, causing them to be unable to see the steering in time. Prompt and unable to see the road ahead. Drivers often have to wait until close range to notice; at this time, the driver's movements will inevitably be deformed, ranging from panic to causing traffic accidents. And most of the known far and near lights are manually operated; the driver is prone to neglect due to personal habits, and fails to switch the far and near lights in a timely manner, which affects driving safety. And if the driver has noticed the switching operation of the far and near car lights at the correct time point, but must operate again to switch back to the original far car lights after the time point, so the reciprocating switching operation will also cause the driver to inconvenience and distress.

Contents of the invention

The purpose of this utility model is to solve the above-mentioned problems in the existing technology, and to provide an automatic switching device for high and low beams of automobiles. , and stable performance, high degree of automation.

The purpose of this utility model can be achieved through the following technical solutions: an automatic switching device for high and low beams of an automobile, which includes a control unit, a sensor unit electrically connected to the control unit, and a sensor unit connected to the control unit A switching circuit electrically connected to each other; the switching circuit includes a power supply, high beams and low beams connected in parallel with the power supply, and a relay.

The automatic switching device for high and low beams of automobiles is provided with a relay in the switching circuit. When the control unit judges that the high and low beams need to be switched according to the information detected by the sensor unit, the relay is started to switch between the far and near lights; the sensor unit will The detected information is sent to the control unit. The control unit processes the information transmitted or compares it with the preset information to determine whether to switch the high and low beams; Switching; thus not only easy to use, but also stable performance and high degree of automation.

In the above automatic high and low beam switching device for automobiles, the high beam is connected in series with the normally closed switch of the relay, and the low beam is connected in series with the normally open switch of the relay.

When the car is running, the high beam is mainly used, because its lighting distance is longer and the brightness is relatively high, which is convenient for the driver to see the road conditions; so the normally closed switch of the relay is connected in series with the high beam, and the The normally open switch of the relay is connected in series with the dipped beam.

In the above-mentioned automatic switching device for high and low beams of automobiles, the sensor unit includes a steering angle sensor and a distance sensor. In specific applications, other sensors, such as light sensors, etc. can also be used; using different sensors to detect different information is applicable to various situations that require switching between high and low beams.

In the above-mentioned automatic switching device for high and low beams of automobiles, the first switch that is closed according to the signal measured by the steering angle sensor and the second switch that is closed according to the signal measured by the distance sensor are provided in the relay; The switch and the second switch are respectively electrically connected to the control unit and connected in parallel with each other.

The relay is provided with a first switch and a second switch connected in parallel, no matter whether the first switch is closed or the second switch is closed, the relay will open the normally closed switch and close the normally open switch to switch the high and low beams. The control unit presets the steering angle of the steering wheel to be 30°. When the steering angle detected by the steering angle sensor exceeds 30°, the control unit controls the first switch to be closed, and the relay is activated to switch the high and low beams. The control unit presets the distance between the car and the obstacle in front as 100m. When the distance sensor detects that the distance between the car and the obstacle in front is less than 100m; at this time, the control unit controls the second switch to close, and the relay starts to switch the high and low beams.

In the above automatic high and low beam switching device for automobiles, the relay is provided with a third switch that is closed according to the signal of the turn signal, and the third switch is electrically connected to the control unit and connected in parallel with the first switch.

The relay is also provided with a third switch connected in parallel with the first switch, as long as one of the first switch, the second switch and the third switch is closed; the relay will disconnect the normally closed switch, close the normally open switch, and perform distance Light switch. When the control unit learns that the turn indicator light is on, it controls the third switch to close, and the relay starts to switch the high and low beams.

In the above-mentioned automatic switching device for high and low beams of automobiles, the relay is a bidirectional relay.

In the above-mentioned automatic switching device for high and low beams of automobiles, the high beams are connected in series with a first resistance element, and the low beams are connected in series with a second resistance element. This setting can protect the high beam and low beam.

In the above automatic high and low beam switching device for automobiles, the first resistance element and the second resistance element are both fixed resistances.

In the above-mentioned automatic switching device for high and low beams of automobiles, the automatic switching device for high and low beams of automobiles further includes a manual switch connected in series with the power supply. The original control circuit of the high beam is connected in parallel with the high beam, and the original control circuit of the low beam is connected in parallel with the low beam. When the driver does not need to use the automatic switching device for high and low beams of the automobile, he only needs to disconnect the manual switch; the opening and closing of the high beams can be controlled respectively by the original control circuit of the high beams, The original control circuit to control the opening and closing of the dipped beam.

Compared with the prior art, the automatic switching device for high and low beams of the automobile is provided with a relay in the switching circuit; the control unit judges that the high and low beams need to be switched according to the information detected by the sensor unit, and starts the relay to switch between the far and near lights. ; So it is not only easy to use, but also stable in performance and high in automation.

Description of drawings

Fig. 1 is the schematic diagram of the switching circuit of the automatic switching device for high and low beams of automobiles of the utility model.

Among the figure, 10, power supply; 20, high beam; 30, low beam; 40, relay; 41, normally closed switch; 42, normally open switch; 43, first switch; 44, second switch; 45, the first switch Three switches; 50, the first resistance element; 60, the second resistance element; 70, a manual switch.

Detailed ways

The following are specific embodiments of the utility model and in conjunction with the accompanying drawings, the technical solution of the utility model is further described, but the utility model is not limited to these embodiments.

Please refer to FIG. 1 , the automatic high and low beam switching device of the present invention includes a control unit, a sensor unit electrically connected to the control unit, and a switching circuit electrically connected to the control unit. In this embodiment, the control unit is an ECU (Electronic Control Unit).

Please continue to refer to FIG. 1 , the sensor unit includes a steering angle sensor and a distance sensor. The steering angle sensor and the distance sensor are respectively electrically connected to the control unit. In specific applications, other sensors, such as light sensors, can also be used; using different sensors to detect different information is applicable to various situations that require switching between high and low beams. The switching circuit includes a power supply 10, a high beam lamp 20 and a low beam lamp 30 connected in parallel with the power supply 10, a relay 40, a first resistance element 50 connected in series with the high beam lamp 20, a first resistance element 50 connected in series with the low beam lamp 30 second resistor elements 60 connected in series, and a manual switch 70 connected in series with the power supply 10 . In this embodiment, the relay 40 is a bidirectional relay; the first resistance element 50 and the second resistance element 60 are both fixed resistances. A first resistor element 50 connected in series with the high beam lamp 20 and a second resistor element 60 connected in series with the low beam lamp 30 are provided; such arrangement can protect the high beam lamp 20 and the low beam lamp 30 .

Please continue to refer to FIG. 1 , the relay 40 is provided with a normally closed switch 41 , a normally open switch 42 , a first switch 43 , a second switch 44 and a third switch 45 . The first switch 43 is opened or closed according to the signal measured by the steering angle sensor. The second switch 44 is opened or closed according to the signal measured by the distance sensor. The third switch 45 is opened or closed according to the turn signal. The first switch 43 , the second switch 44 and the third switch 45 are respectively electrically connected to the control unit and connected in parallel with each other. The high beam 20 is connected in series with the normally closed switch 41 of the relay 40 , and the low beam 30 is connected in series with the normally open switch 42 of the relay 40 . Because the automobile mainly uses the high beam 20 when running, because the distance of its illumination is longer and the brightness is relatively high, it is convenient for the driver to see the road conditions; connected in series, and the normally open switch 42 of the relay 40 is connected in series with the low beam lamp 30 . In this embodiment, the original control circuit of the high beam lamp 20 is connected in parallel with the high beam lamp 20 , and the original control circuit of the low beam lamp 30 is connected in parallel with the low beam lamp 30 . When the driver does not need to use the automatic switching device for high and low beams of the automobile, he only needs to disconnect the manual switch 70; The original control circuit of the low beam lamp 30 controls the opening and closing of the low beam lamp 30 .

Please continue to refer to FIG. 1 , as long as one of the first switch 43 , the second switch 44 and the third switch 45 is closed; the relay 40 will open the normally closed switch 41 and close the normally open switch 42 to switch the high and low beams. The control unit presets the steering angle of the steering wheel to be 30°. When the steering angle detected by the steering angle sensor exceeds 30°, the control unit controls the first switch 43 to close, and the relay 40 is activated to switch the high and low beams. . The control unit presets the distance between the vehicle and the obstacle in front as 100m. When the distance sensor detects that the distance between the vehicle and the obstacle in front is less than 100m; at this time, the control unit controls the second switch 44 to close, and the relay 40 starts to switch the high and low beams. switch. When the control unit learns that the turn indicator light is on, it controls the third switch to close, and the relay 40 starts to switch the high and low beams.

Please continue to refer to Fig. 1, when the brightness of the car is not enough or the road condition is not good, the driver manually closes the manual switch 70 of the switching circuit, and now the high beam 20 of the car enters a constant light state. The steering angle sensor detects the steering angle of the steering wheel, and the distance sensor detects the distance between the car and the obstacle ahead; the steering angle sensor and the distance sensor transmit the detected information to the control unit respectively. When the control unit judges that the steering angle of the steering wheel is greater than 30°, the distance between the vehicle and the obstacle in front is less than 100m, or the turning lights are on; the corresponding first switch 43, second switch 44 or third switch 45 in the relay 40 will be closed, and the The relay 40 is turned on. At this time, the normally open switch 42 of the relay 40 is absorbed and closed, and the low beam lamp 30 is lit; the normally closed switch 41 of the relay 40 is sucked and disconnected, and the high beam lamp 20 is extinguished. When the control unit judges that the steering angle of the steering wheel is less than or equal to 30°, the distance between the car and the obstacle ahead is greater than or equal to 100m, and the turn signal is off, the corresponding first switch 43, second switch 44 and The third switches 45 are all in an off state, the relay 40 is not conducting, and the state of the high beam lamp 20 is restored. So repeated, that is to complete the kinetic energy of automatic switching of far and low beams. The automatic switching device of high and low beams of the automobile does not need to be manually operated by the driver himself, effectively guarantees the safety of driving, and can effectively prevent the occurrence of traffic accidents. When the conditions are not met, it can automatically return to the high beam 20 state without hindering driving, which is very intelligent and humanized. When the driver drives a long distance, the high and low beams can be switched automatically and interactively according to various driving conditions, so that the driver can avoid the trouble of reciprocating operation.

In summary, the automatic switching device for high and low beams of the automobile is provided with a relay 40 in the switching circuit; the control unit judges that the high and low beams need to be switched according to the information detected by the sensor unit, and starts the relay 40 to switch between the far and near lights. ; So it is not only easy to use, but also stable in performance and high in automation.

The specific embodiments described herein are only examples to illustrate the spirit of the present invention. Those skilled in the technical field to which the utility model belongs can make various modifications or supplements to the described specific embodiments or adopt similar methods to replace them, but they will not deviate from the spirit of the utility model or go beyond the appended claims defined range.

Claims (9)

1. An automatic switching device for high and low beams of automobiles, characterized in that, the automatic switching device for high and low beams of automobiles comprises a control unit, a sensor unit electrically connected with the control unit, and a sensor unit connected with the control unit A switching circuit electrically connected to the units; the switching circuit includes a power supply (10), a high beam (20) and a low beam (30) connected in parallel with the power supply (10), and a relay (40). 2. Automobile high and low beam automatic switching device according to claim 1, characterized in that, said high beam (20) is connected in series with the normally closed switch (41) of relay (40), and said low beam ( 30) connected in series with the normally open switch (42) of the relay (40). 3. The automatic switching device for high and low beams of an automobile according to claim 1 or 2, wherein the sensor unit includes a steering angle sensor and a distance sensor. 4. The automatic switching device for high and low beams of automobiles according to claim 3, characterized in that, the relay (40) is provided with a closed first switch (43) according to the signal recorded by the steering angle sensor, and a switch according to the distance. The signal measured by the sensor closes the second switch (44); the first switch (43) and the second switch (44) are respectively electrically connected to the control unit and connected in parallel with each other. 5. The automatic switching device for high and low beams of automobiles according to claim 4, characterized in that, the relay (40) is provided with a third switch (45) that is closed according to the turn signal signal, and the third switch (45) ) is electrically connected to the control unit and connected in parallel with the first switch (43). 6. The automatic high and low beam switching device for automobiles according to claim 1 or 2, characterized in that the relay (40) is a bidirectional relay. 7. The automatic switching device for high and low beams of automobiles according to claim 1 or 2, characterized in that, said high beams (20) are connected in series with a first resistance element (50), and said low beams (30) are connected in series There is a second resistive element (60). 8. The automatic high and low beam switching device for automobiles according to claim 7, characterized in that, both the first resistance element (50) and the second resistance element (60) are fixed resistances. 9. The automatic switching device for high and low beams of automobiles according to claim 1 or 2, characterized in that, the automatic switching device for high and low beams of automobiles further comprises a manual switch (70) connected in series with the power supply (10).

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