| 摘要 |
PURPOSE: A detecting method of obstacles in front of a vehicle is provided to prevent an accident and damage of a vehicle body by detecting obstacles in front of a vehicle all the time and automatically operating a brake in a dangerous situation. CONSTITUTION: An ignition switch is turned on. Each vehicle speed(V) and height(h) is detected by a wheel speed sensor, a vehicle speed sensor and a height sensor, and then inputted to an ECU(Electronic Circuit Unit). The ECU compares if the height(h) is larger than H-A and smaller than H+A wherein the H is reference safe height from the lower face of a vehicle body to the ground while the A is a constant for an allowable safe limit. If h less than H+A and more than H-A is not obtained, the ECU makes a driver operate a brake and alarms the dangerous state by lighting on an alarm lamp. To operate the brake, the braking force of the brake is decided depending on the vehicle speed(V) from the vehicle speed sensor. The brake system is operated according to the decided braking force. Therefore, the driver is protected from an accident by operating the brake system promptly.
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