Real-time safe interval measurement method and device used for vehicle anti-collision warning

The invention discloses a method and device for measuring the real-time safe interval and was used for collision warning, including the steps: set microprocessor to collect the real-time distance between the fore and after cars before and after the preset time intervals, using the distance at the tw...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	LUO QUANJIAN, XU YANGSHENG, WU YANXI, ZHU BO, DENG LEI, XU GUOQING
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	ANALOGOUS ARRANGEMENTS USING OTHER WAVES DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES GYROSCOPIC INSTRUMENTS LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION ORRERADIATION OF RADIO WAVES MEASURING MEASURING DISTANCES, LEVELS OR BEARINGS NAVIGATION PHOTOGRAMMETRY OR VIDEOGRAMMETRY PHYSICS RADIO DIRECTION-FINDING RADIO NAVIGATION SURVEYING TESTING
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Beschreibung
Zusammenfassung:	The invention discloses a method and device for measuring the real-time safe interval and was used for collision warning, including the steps: set microprocessor to collect the real-time distance between the fore and after cars before and after the preset time intervals, using the distance at the two time divide the time interval to obtain the relative velocity of the car to the ahead car; according to the preset warning time, reaction time of the driver, the lag time of device, rise time of brake power, the relative velocity of the car to the ahead and braking length to calculate the real-time safe interval; real-time judge the car distance was less than the real-time calculated safe distance; if it was than alarm. The method and device of this invention real-time calculate the safe distance with the front car according to the condition of cars, and alarm correspondingly, adaptable, with wide and high measurement accuracy.