CN202345510U - Automobile high-beam lamp and low-beam lamp automatic switching control circuit - Google Patents

Abstract

The utility model relates to an automatic switching control circuit of a high beam lamp and a low beam lamp of an automobile, comprising a central processing unit, a current collecting unit of a low beam lamp, a current collecting unit of a high beam lamp, an electronic switch of a low beam lamp and an electronic switch of a high beam lamp. The low beam electronic switch is connected in parallel with the low beam manual switch on the low beam circuit, the low beam current acquisition unit is connected with the low beam circuit and the central processing unit, the open and close signal of the low beam manual switch, The control terminal of the switch is connected with the central processing unit. The high-beam electronic switch is connected in parallel with the high-beam manual switch on the high-beam circuit, the high-beam current acquisition unit is connected with the high-beam circuit and the central processing unit, the open-close signal of the high-beam manual switch, the high-beam electronic The control terminal of the switch is connected with the central processing unit. When the lighted low beam lamp fails suddenly, the utility model can automatically light the high beam lamp in time, and vice versa, thereby ensuring the illumination of the road ahead of the automobile and driving safety.

Description

Automatic switching control circuit of high beam and low beam of automobile

technical field

The utility model relates to an automobile electrical accessory, in particular to an automatic switching control circuit for an automobile high-beam lamp and low-beam lamp.

Background technique

The dipped beam and the high beam on the current car all can be lighted or extinguished after the driver manually presses the relevant button. Therefore, in the driving process of the car, if the light is dark, it is necessary to manually turn on the high beam or the low beam to illuminate the road surface and ensure driving safety. But if after the driver turns on the high beam, the high beam fails, and the driver has not reacted in time to turn on the low beam; or if the driver turns on the low beam, the low beam fails, and the driver still If you don’t respond in time to turn on the high beams; in these cases, the driver’s vision will be very dark, or even pitch black, which will easily cause traffic accidents and pose a very serious safety hazard.

Contents of the invention

The utility model mainly solves the problem that the low-beam and high-beam lights of the original automobile can only be turned on or off after the driver manually presses the relevant button. When other lights are turned on, it is easy to cause technical problems of traffic accidents; provide an automatic switching control circuit for high beam and low beam of automobiles, which can detect in time when the high beam or low beam that needs to be lit fails. Fault signal, and automatically light up other high beam or low beam lights in time to ensure that the driver can see the road ahead of the car clearly, thereby avoiding traffic accidents and ensuring driving safety.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions: the utility model comprises a central processing unit, a low beam current acquisition unit, a high beam current acquisition unit, a low beam electronic switch J1 and a high beam Electronic switch J2; on the car, low beam D1, low beam manual switch K1 and power supply are connected in series to form a low beam circuit, high beam D2, high beam manual switch K2 and power supply are connected in series to form a high beam circuit The low beam electronic switch J1 is connected in parallel with the low beam manual switch K1, the switching signal of the low beam manual switch K1 is connected to the central processing unit, and the control terminal of the low beam electronic switch J1 is connected to the central processing unit, The input end of the low beam current acquisition unit is connected to the low beam circuit, and the output end of the low beam current acquisition unit is connected to the central processing unit; the high beam electronic switch J2 is connected to the high beam manual switch K2 In parallel connection, the on-off signal of the high beam manual switch K2 is connected to the central processing unit, the control terminal of the high beam electronic switch J2 is connected to the central processing unit, and the input terminal of the high beam current acquisition unit is connected to the high beam circuit The output end of the high beam current acquisition unit is connected with the central processing unit. Both the switching signals of the low beam manual switch and the high beam manual switch are sent to the central processing unit, the low beam current acquisition unit collects the low beam current, the high beam acquisition unit collects the high beam current, and collects the collected The signal is sent to the central processing unit, and a working program is stored inside the central processing unit. When the low-beam manual switch is closed, if the current collected by the low-beam current acquisition unit is less than the set value, it means that the low-beam has failed, and the central processing unit sends a control signal to the high-beam electronic switch, and the high-beam The lamp is automatically turned on. Conversely, when the high beam manual switch is closed, if the current collected by the high beam current acquisition unit is less than the set value, it means that the high beam has failed, and the central processing unit sends a control signal to the low beam electronic switch, then The low beams are automatically switched on. This can avoid traffic accidents caused by the darkness of the road ahead of the car when the low beam or the high beam fails suddenly during the driving of the car, and effectively ensure driving safety.

Preferably, the low beam electronic switch J1 and the high beam electronic switch J2 are triodes or relays. When a triode is used, the control signal output by the central processing unit is connected to the base of the triode, and the low-beam circuit or the high-beam circuit is turned on or off by controlling the conduction or cut-off of the triode. When a relay is used, the control signal output by the central processing unit is connected to the driving end of the relay, and whether the contact switch of the relay is driven or not is controlled to be closed or separated to realize the on or off of the low beam circuit or the high beam circuit.

Preferably, a display unit is included, and the display unit is connected to the central processing unit. The display unit can be a single display screen, or an original display screen on the car dashboard. After the central processing unit judges that the low beam or the high beam is out of order, it outputs a signal to the display unit, and the failure state of the low beam or the high beam is displayed on the display unit to remind the driver and facilitate subsequent maintenance.

Preferably, the central processing unit is connected with the on-off signal of the ignition switch of the automobile. The on-off signal of the ignition switch of the car is sent to the central processing unit. Only when the ignition switch is on, the central processing unit starts the above-mentioned light detection and automatic switching procedures.

The beneficial effects of the utility model are: by adding the low beam electronic switch and the high beam electronic switch, and the opening and closing of these two switches are controlled by the central processing unit according to whether the low beam or the high beam has a fault, thereby realizing A: During the driving process of the car, when the lighted low beam or high beam suddenly fails, other high beams or low beams can be automatically turned on in time, so as to ensure that the driver can see the road ahead of the car clearly , Avoid traffic accidents, effectively ensure driving safety.

Description of drawings

Fig. 1 is a kind of circuit principle connection block diagram of the utility model.

In the figure, 1. Power supply, 2. Central processing unit, 3. Low beam current acquisition unit, 4. High beam current acquisition unit, 5. Display unit, 6. Ignition switch on/off signal.

Detailed ways

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment 1: the automobile high beam low beam automatic switching control circuit of the present embodiment, as shown in Figure 1, comprises central processing unit 2, low beam current acquisition unit 3, high beam current acquisition unit 4, low beam Light electronic switch J1 and high beam electronic switch J2. Low beam D1, low beam manual switch K1 and power supply 1 are connected in series to form a low beam circuit, and high beam D2, high beam manual switch K2 and power supply 1 are connected in series to form a high beam circuit. The low beam electronic switch J1 is connected in parallel with the low beam manual switch K1, the switch signal of the low beam manual switch K1 is connected to the central processing unit 2, the control terminal of the low beam electronic switch J1 is connected to the central processing unit 2, and the low beam The input end of the lamp current collection unit 3 is connected to the low beam circuit, and the output end of the low beam current collection unit 3 is connected to the central processing unit 2 . The high beam electronic switch J2 is connected in parallel with the high beam manual switch K2, the switch signal of the high beam manual switch K2 is connected with the central processing unit 2, the control terminal of the high beam electronic switch J2 is connected with the central processing unit 2, the high beam The input end of the lamp current acquisition unit 4 is connected to the high beam circuit, and the output end of the high beam current acquisition unit 4 is connected to the central processing unit 1 . The ignition switch switch signal 6 of the automobile is also connected with the central processing unit 2, and the original display screen on the automobile instrument panel is also connected with the central processing unit 2 as the display unit 5. The central processing unit 2 internally stores working programs. In this embodiment, both the low beam electronic switch J1 and the high beam electronic switch J2 use relays.

Working process: When the ignition switch of the car is turned on, when the high beam manual switch is closed, that is, the high beam is in the lighting state, the high beam current acquisition unit collects the current of the high beam and sends it to the central processing unit, when the high beam When the current value is less than the set value, the central processing unit outputs a control signal to close the electronic switch of the low beam, and automatically controls the low beam to light up. At the same time, the failure of the high beam is displayed on the instrument panel display to remind the driver. Similarly, when the low beam manual switch is closed, that is, the low beam is on, the low beam current collection unit collects the current of the low beam and sends it to the central processing unit. When the current value is less than the set value, the central processing The unit outputs a control signal to close the high beam electronic switch, automatically controls the high beam to light up, and at the same time displays the failure of the low beam on the instrument panel display to remind the driver. This can effectively prevent the driver from "blinding" due to sudden failure of the low beam or high beam during driving, thereby ensuring that the driver can see the road ahead of the car clearly, avoiding traffic accidents, and effectively ensuring driving safety.

Claims (5)

1. A control circuit for automatic switching of high beam and low beam lights of automobiles. The low beam light D1, the low beam light manual switch K1 and the power supply (1) are connected in series to form a low beam light circuit. The high beam light D2 and the high beam light manual The switch K2 and the power supply (1) are connected in series to form a high beam circuit, which is characterized by including a central processing unit (2), a low beam current collection unit (3), a high beam current collection unit (4), a low beam Electronic switch J1 and high beam electronic switch J2; low beam electronic switch J1 and the low beam manual switch K1 are connected in parallel, the switch signal of the low beam manual switch K1 is connected to the central processing unit (2), low beam The control terminal of the light electronic switch J1 is connected to the central processing unit (2), the input terminal of the low beam current collection unit (3) is connected to the low beam circuit, and the output terminal of the low beam current collection unit (3) It is connected with the central processing unit (2); the high beam electronic switch J2 is connected in parallel with the high beam manual switch K2, the switch signal of the high beam manual switch K2 is connected with the central processing unit (2), and the high beam electronic The control end of the switch J2 is connected to the central processing unit (2), the input end of the high beam current acquisition unit (4) is connected to the high beam circuit, and the output end of the high beam current acquisition unit (4) is connected to the central processing unit (4). The processing unit (2) is connected. 2. The automatic switching control circuit for high beam and low beam of an automobile according to claim 1, characterized in that said electronic switch J1 for low beam and electronic switch J2 for high beam are triodes or relays. 3. The automatic switching control circuit for high beam and low beam of automobile according to claim 1 or 2, characterized in that it comprises a display unit (5), said display unit (5) and said central processing unit (2 ) connected. 4. The automatic switching control circuit of high beam and low beam of the automobile according to claim 1 or 2, characterized in that the central processing unit (2) is connected with the ignition switch signal (6) of the automobile. 5. The automatic switching control circuit of high beam and low beam of the automobile according to claim 3, characterized in that the central processing unit (2) is connected with the ignition switch signal (6) of the automobile.

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