KR19980052057A - High beam and low beam switching device for automobile headlight and control method thereof - Google Patents

Abstract

A vehicle speed sensor that detects the speed of the vehicle and converts it into an electrical signal and outputs it; a light sensor that detects ambient light and converts it into an electrical signal; and a headlight switch to drive the headlights; A switching switch for switching the low beams, and manually switching the high beam and the low beam of the headlamp according to the signals input from the headlight switch and the switching switch, and using the signals input from the speed sensor and the light sensor And a control means for automatically driving the high beam when a predetermined speed is exceeded in a dark state, and a headlight driving unit for driving the high beam or the low beam according to the control signal input from the control means. And control of high beam and low beam switching according to the amount of ambient light It said, also provides a high-beam and low beam switching apparatus and a method of manufacturing a car headlight, which can be manually switched to the high beam and low beam in accordance with operator needs to occur while the car is stopped.

Description

High beam and low beam switching device for automobile headlight and control method thereof

The present invention relates to a high beam and low beam switching device for a headlamp and a control method thereof. More specifically, the switching of the high beam and the low beam is automatically controlled according to the driving speed of the vehicle and the amount of ambient light. The present invention relates to a high beam and low beam switching device for a vehicle headlight and a control method thereof, in which a driver can manually switch between high beam and low beam as needed.

While the vehicle is driving, in addition to the equalizing device for securing the clock, an equalizing device for displaying signals and signs is required.

The light-emitting device is a headlight, a fog light, an indoor light, a reversing light, and the like, and the light-emitting device for the signal marking includes a turn signal, a tail light, a number light, a stop light, and the like. It is mandatory to attach the product to.

The headlamp is an equalizing device for securing a driver's watch when driving at night. The headlamp includes a pilammelt as a light source, a reflector for focusing light forward, and a lens for determining the direction and diffusion of light.

The light distribution characteristic of the beam irradiated from the headlamp is generally wide in the horizontal direction and narrow in the vertical direction. The driver uses a switching switch installed around the steering wheel according to the driving situation. High beam and low beam should be used properly.

If you are driving on a secluded outer road, you can use a high beam that allows you to look far away and to illuminate the road and its surroundings widely.If you are driving in the city or if you are crossing with an oncoming car, You can use the low beam to illuminate your driving direction with the required brightness and to prevent the film from happening without glare to the driver of the front or opposite vehicle. In this case, the headlights should be turned off.

However, while driving on a lot of curved roads that require high beams, the driver switches the high beams to low beams every time there is an oncoming vehicle and then switches them back to high beams after crossing. Is also dangerous.

In order to improve such inconvenience and danger, the technology for automatically switching the high beam and the low beam according to whether or not the light received from the other vehicle facing each other while driving the vehicle is disclosed in Korean Utility Model Application Publication No. 87 Auto flasher for upper and lower headlights of No. 245 (announcement date: February 11, 1987), and vehicle headlights of No. 89-379 (date: March 9, 1989 AD) HB, LB has been disclosed in the device for switching on and turning off the main order.

However, the above-mentioned techniques are convenient because they automatically switch between the high beam and the low beam of the headlamp, but there is a problem that the driver cannot turn on the high beam or the low beam arbitrarily as needed.

In view of these problems, the technology to automatically adjust the brightness of the high beam and low beam according to the intensity of the surroundings when driving the vehicle, and to allow the driver to manually turn on the upper headlights or the lower headlights as needed. Korean Utility Model Registration Application No. 89-380 (Notice date: March 9, 1989 AD) has been disclosed in the dimmer of a vehicle headlight and a control device for parking stop lighting.

However, the high beam and low beam switching control apparatus of a conventional headlamp including the above cited examples is a form in which switching is performed by sensing light emitted from a vehicle of the other party, not by light emitted from the vehicle, but by ambient light. There is a problem that can be malfunctioned, and there is also a problem that the circuit is too complicated.

An object of the present invention is to solve the conventional problems as described above, and automatically controls the switching of the high beam and low beam according to the driving speed and the amount of ambient light of the vehicle, and also requires the driver even when the vehicle is stopped. According to the present invention, there is provided a high beam and low beam switching device for a vehicle headlight capable of manually switching a high beam and a low beam, and a control method thereof.

1 is a configuration circuit diagram of a high beam and low beam switching device of a vehicle headlight according to an embodiment of the present invention.

2 is a mounting position diagram of the light intensity sensor of the high beam and low beam switching device of the vehicle headlight according to the embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

10: vehicle speed sensor 20: light intensity sensor

30: microcontroller 40: headlight driving unit

SW1: Headlight switch SW2: Switch

As a means for achieving the above object, the configuration of the apparatus of the present invention, the vehicle speed sensor that detects the speed of the vehicle and converts it into an electrical signal and outputs, and after sensing the amount of ambient light to convert it into an electrical signal A light sensor for outputting, a headlight switch for driving the headlight, a switching switch for switching the high beam or a low beam, and a high beam and the low beam of the headlamp are manually switched in accordance with the signals input from the headlight switch and the switching switch. And a control means for automatically driving a high beam when a predetermined speed is exceeded in a dark state using the signals input from the speed sensor and the light intensity sensor, and according to the control signal input from the control means. It consists of a headlight driving unit for driving a high beam or a low beam.

As a means for achieving the above object, the configuration of the method of the present invention comprises the steps of: reading a signal input from the headlight switch and the switching switch; and driving the high beam or the low beam of the headlamp according to the signal; And reading the signals input from the vehicle speed sensor and the light intensity sensor, and automatically switching the high beam or low beam of the headlamp when the vehicle is traveling at a certain speed in the dark with the ambient light amount. Is made to drive.

Hereinafter, the most preferred embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily implement the present invention.

1 is a configuration circuit diagram of a high beam and low beam switching device of the automotive headlamp according to an embodiment of the present invention, Figure 2 is a device position diagram of the light sensor of the high beam and low beam switching device of a vehicle headlamp according to an embodiment of the present invention to be.

As shown in Figure 1 and 2, the configuration of the high beam and low beam switching device of the vehicle headlight according to an embodiment of the present invention, the vehicle speed sensor 10 for detecting the speed of the vehicle, and installed in the front of the vehicle Brightness sensor 20, headlight switch SW1, switching switch SW2, vehicle speed sensor 10, brightness sensor 20, headlight switch SW1 and switching switch for sensing the amount of ambient light A microcontroller 30 having an input terminal connected to the output terminal of SW2 and a headlamp driving unit 40 having an input terminal connected to the output terminal of the microcontroller 30. The microcontroller 30 uses a built-in analog to digital converter and a memory therein.

The operation of the high beam and low beam switching device of the headlamp and the control method thereof according to the embodiment of the present invention by the above-described configuration is as follows.

When the power is applied, the control program stored in the internal memory of the microcontroller 30 is executed by the microcontroller 30 to start the operation of the high beam and low beam switching device of the vehicle headlight according to the embodiment of the present invention. .

When the operation starts, the microcontroller 30 initializes all memory variables, and then reads a signal input from the headlight switch SW1 to determine whether the headlight switch SW1 is turned on. When the headlight switch SW1 is turned on, the microcontroller 30 allows the high beam or the low beam to be operated by operating the headlight driver 40 according to the state of the switching switch SW2. Therefore, the driver can drive the high beam or the low beam manually by using the switching switch SW2 after turning on the headlight switch SW1.

Whether the headlight switch SW1 is on or off, the microcontroller 30 uses a signal relating to the vehicle speed input from the vehicle speed sensor 10 and a signal for the amount of ambient light input from the luminous intensity sensor 20, When the vehicle is traveling at a constant speed or more in a dark environment, the high beam is operated by operating the headlight driving unit 40. However, when the surroundings are brightened or the vehicle becomes below a certain speed including light emitted from the opposite vehicle, the low beam is operated.

As described above, in the embodiment of the present invention, the switching of the high beam and the low beam is automatically controlled according to the driving speed and the amount of ambient light of the vehicle, and the driver may control the high beam and the low beam as needed even when the vehicle is stopped. It is possible to provide a high beam and low beam switching device for an automobile headlight having an effect of manually switching and a control method thereof. This effect of the present invention can be modified and used by those skilled in the art within the scope of the present invention in the field of automotive equalizers.

Claims (3)

A vehicle speed sensor that detects the speed of the vehicle and converts it into an electrical signal and outputs it; a light sensor that detects ambient light and converts it into an electrical signal; and a headlight switch to drive the headlights; A switching switch for switching the low beams, and manually switching the high beam and the low beam of the headlamp according to the signals input from the headlight switch and the switching switch, and using the signals input from the speed sensor and the light sensor And a control means for automatically driving the high beam when a predetermined speed is exceeded in a dark state, and a headlight driving unit for driving the high beam or the low beam according to the control signal input from the control means. High beam and low beam switching devices for automotive headlights. The high beam and low beam switching device of claim 1, wherein the light sensor is installed at an emblem in front of the vehicle. Reading signals input from the headlight switch and the switching switch, driving the high beam or the low beam of the headlamp according to the above signals, reading the signals input from the vehicle speed sensor and the light sensor; The high beam of the headlamp of the automobile, characterized in that it comprises the step of automatically switching the high beam or low beam of the headlight when the vehicle is running at a certain speed in the dark state using the above signal. And a control method of the low beam switching device.