KR950008232A - Vehicle collision prevention device and method using red lamp detection sensor - Google Patents

Abstract

The present invention relates to a vehicle collision preventing device, comprising a red filter, a lens, and a photo detector, which detects whether a red brake lamp emits light at the rear of a front vehicle, and applies a warning and a brake to a host vehicle to maintain a constant distance between vehicles. The present invention relates to a vehicle collision preventing device and a method thereof using a red lamp detection sensor that can be used as an auxiliary sensor of the related art. The conventional vehicle collision warning device or the vehicle collision preventing device calculates an estimated collision time after measuring a distance and a relative speed between vehicles. As a warning or braking method is used, the driver may not be able to proactively cope with the rapidly changing surrounding environment such as the emergency of the vehicle in front of the vehicle. Deceleration measurement is more computational and less accurate There was a problem that needs to be supplemented.

In view of the conventional problems, the present invention detects a change in the amount of red light by using a phenomenon in which a red lamp emits light when a sudden braking is applied to a front vehicle, and then the distance between the vehicles measured based on an existing device is a safe distance. By providing a red lamp detection sensor that alarms or brakes the vehicle when it is inside, it detects the brake lamp of the vehicle ahead and applies the alarm and braking.

Description

Vehicle collision prevention device and method using red lamp detection sensor

Since this is an open matter, no full text was included.

1 is a block diagram of a vehicle collision prevention device by the red lamp sensor of the present invention,

2 is a state structure diagram of the optical system for the red light sensor of FIG.

3 is an exemplary view of FIG.

4 is an exemplary view showing the overall operating principle of the present invention,

5 is a flowchart illustrating a method of preventing a vehicle collision by the red lamp sensor of the present invention.

Claims (5)

In the safety driving assistance device that installs a distance measuring device that can measure the distance to the vehicle ahead in front of the vehicle to alert the driver by the safety distance and the estimated time of collision with the vehicle ahead, the front vehicle (20 A red light detection sensor unit 11 for detecting the amount of light such as red light by detecting the brake lamp 21 of the light source; A processing unit 12 which compares the amount of light detected by the red light detecting sensor unit 1 with the amount of light immediately before sensing; A brake control unit 13 for controlling the brake by the comparison output of the processing unit 12; And a warning device unit (14) for outputting an alarm signal by the comparison output of said processing unit (12). The optical system of claim 1, wherein the optical system of the red light sensor unit (11) includes a red transmission filter (1) passing only red color and blocking light other than red color; A lens 2 forming a focal point of light introduced through the red transmission filter 1; A photo detector 3 for detecting the amount of light of focus-focused light through the lens 2; A photodetector mask (4) for adjusting the size of the surface of the photodetector (3) to detect only light of a desired angle when detecting the amount of light in the photodetector (3); Red lamp characterized in that it comprises a baffle (5) for reflecting and blocking the extraneous light coming from the unnecessary area in order to prevent malfunction by the light coming from the unwanted area when the light detector 3 detects the amount of light Vehicle collision prevention device by detecting sensor. The optical system of claim 1, wherein the optical system of the red light sensor unit (11) includes a red transmission filter (1) passing only red color and blocking light other than red color; A lens 2 forming a focal point of light introduced through the red transmission filter 1; A photo detector 3 for detecting the amount of light of focus-focused light through the lens 2; A baffle (5) for reflecting and blocking extraneous light coming from an unnecessary area in order to prevent malfunction due to light coming from an undesired area when the light detector 3 detects the amount of light; In order to detect only the light of a desired angle when detecting the amount of light in the light detector (3) by the red lamp detection sensor characterized in that it comprises a field stop 6 to adjust the detection angle by blocking unwanted extraneous light Vehicle collision prevention device. The apparatus of claim 1, wherein the alarm device uses a visual alarm device such as a light emitting diode (LED) or an audio alarm device such as a buzzer. Comparing the own vehicle speed and the preset distance after the driving starts (A1); Measuring the inter-vehicle distance if the host vehicle speed is greater than a preset value (A2), and determining whether the measured inter-vehicle distance is within the safety distance, and performing a first alarm if it is within the safety distance (A3); After the first alarm, if the preset collision scheduled time is within a predetermined time or a red light is detected by the deceleration of the front vehicle, the second lamp and the brake are operated (A4) to sequentially operate the red lamp detection sensor. Vehicle collision prevention method. ※ Note: The disclosure is based on the initial application.