KR200180671Y1 - Light controller using optic sensor - Google Patents

Abstract

The present invention relates to an automatic light switching device that automatically switches the state of the headlight and the high beam by the amount of light detected by the light sensor to eliminate the inconvenience of manually switching the headlight and the high beam (high beam) during the night driving of a vehicle. to be.

Description

Automatic Light Amount Switching Controller Using Light Sensor

Use headlights to ensure visibility in front of your car at night.

You can use only a headlight on a good road with well-equipped streetlights or a road where you can easily identify the road ahead because of the surrounding lights. But in places where you can't predict what's going on or around you, such as country roads, you'll use high beams.

Currently, the headlights and the high beams are switched manually. However, when the vehicle is left in the uplight state, the vehicle directly illuminates the driver's view of the oncoming vehicle, which impedes the eyesight and burdens the eyes, thereby causing a great risk of an accident. Accordingly, the driver repeats the manual operation of the switch from the headlight to the headlight when there is an oncoming vehicle and from the headlight to the headlight when there is no vehicle.

An object of the present invention is to solve the above problems, by attaching an optical sensor in front of the vehicle to automatically switch the state of the headlights and the uplight by the direction and amount of light received by the light sensor.

Another object of the present invention is to automatically select the headlights and the headlights so that the driver can drive more comfortably and safely at night.

Another object of the present invention is to reduce the risk of accidents due to the user's mistake in the headlight / uplight operation.

1 is a view for explaining the operation of the automatic light amount switching controller

2 is a block diagram of an automatic light quantity switching controller

3 is a block diagram of an automatic light amount switching device having a light receiving unit and a light transmitting unit;

4 is a diagram showing a state in which the subject innovation is mounted on a vehicle

<Description of the code | symbol about the principal part of drawing>

1. Light sensor 2. Headlight

A feature of the present invention for achieving the above objects is to install an optical sensor in front of the vehicle to automatically switch to the headlight or high beam state by the amount of light received by the optical sensor.

Hereinafter, the detailed description of the accompanying drawings are as follows.

(A) of FIG. 1 shows that when the light coming from the front while driving is less than a certain amount, it is automatically switched from the headlight state to the uplight state. (B) shows the opposite case. That is, the headlight and the high beam state are automatically switched according to the direction and amount of light coming from the front.

2 is an overall block diagram of an automatic light quantity switching controller using an optical sensor.

Sensors detect light from other vehicles' headlights, high beams, and surroundings, and convert this light into an electrical signal, which is compared with a level input by a comparator or a level adjusted by the driver. The microcontroller receives the output of the comparator and determines the state of the headlights and the high beams based on this input value. In other words, when a light level is higher than a predetermined level or a level determined by the user, the vehicle is in front of the vehicle, and the light is switched from the high beam to the headlight state. Switch from high beam to headlight.

The present invention is connected to the enable switch, in order to prevent the state of the headlight and the uplight unconditionally changed by the direction and the amount of incoming light. This switch is automatically disabled when the headlights or taillights are off. In other words, when the daytime driving is not necessary to use the headlights and high beams have the same effect as the enable switch is automatically turned off. In addition, even if the controller is enabled during night operation, it can be disabled if necessary.

In addition, it has a function to automatically turn on the headlights in the dark, and a display unit is implemented to make it easy for the driver to recognize the headlight / uplight state and the state of the enable switch at a glance.

3 shows an automatic light quantity switching device having a light transmitting portion and a light receiving portion. The light transmitting part serves to emit light emitting pulses, and the light receiving part receives an input light mixed with disturbance light (noise) to extract a control signal from the original signal light. By using the pulsed light as shown in the figure in the GaAS light emitting diode of Figure 3 can be much less affected by the disturbance light in the light receiving portion of the other side. This results in better performance than the automatic switching device using the optical sensor of FIG. In this case, both the light-receiving unit and the light-emitting unit should be mounted on both the vehicle that sends and receives the signal.

4 shows a state in which the present invention is mounted on a vehicle. In the figure, the light sensor is installed on the bonnet of the vehicle, but can be installed anywhere in the vehicle. The installed light sensor accepts not only the light from the oncoming vehicle, but also the light from the surrounding buildings and the light from the street lights. In the case of automatic doors using sensors, even immediate external factors can be activated immediately. However, the present invention, for all incoming light, should not operate, regardless of the amount, and therefore has a constant reference level for controller operation. That is, the controller operates only when light above a certain level, such as previously input or determined by the user, is received by the optical sensor.

The present invention having the configuration described above allows the driver to comfortably operate by determining the amount and state of the light coming from the front at night driving and automatically switching the headlight / uplight state.

In addition, by automatically switching the state of the headlights / headlights, it is possible to reduce the risk of accidents due to the center line invasion light by securing the view of the other driver.

In addition, the headlight / uplight automatic switching controller having the function as described above can be mounted on the vehicle at a very low price.

Claims (3)

1. Consists of optical sensor, microcontroller, comparator, variable resistor, OP amplifier, etc., the optical sensor measures the direction and amount of light coming from the front of the vehicle, converts it into an electrical signal, and then amplifies the signal If the microcontroller and the comparator determine that the vehicle is coming in front of the vehicle (compared to the programmed reference value), it is automatically switched to the high beam (high beam) when there is no oncoming vehicle. Automatic light amount switching controller using an optical sensor. The automatic light quantity switching controller using an optical sensor according to claim 1, wherein the driver arbitrarily adjusts the switching reference point (using a control switch with a variable resistor) in determining the amount and direction of light. 2. The automatic light quantity switching controller according to claim 1, further comprising a light emitting unit and a light receiving unit mounted with both a light emitting unit and a light receiving unit to emit specific signal light from the light emitting unit so as to be less affected by disturbance light.