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Sudden Stop Early Detection Brake Light System with Varying Intensity

IP.com Disclosure Number: IPCOM000004430D
Publication Date: 2000-Nov-10
Document File: 2 page(s) / 16K

Publishing Venue

The IP.com Prior Art Database

Abstract

The present invention is a brake light system in which the brake light is illuminated when the accelerator is rapidly released.

This text was extracted from a RTF document.
This is the abbreviated version, containing approximately 100% of the total text.

Sudden Stop Early Detection Brake Light System with Varying Intensity

The brake lights of a vehicle serve to warn other vehicles that the vehicle is decelerating or is stopped. Conventional brake lights however fail to provide an early warning of when a vehicle will be making a sudden stop, which are the cause of many rear end collisions. Prior to making a sudden stop, drivers often release the accelerator rapidly. What is needed is a brake light system that warns when a vehicle may be making a sudden stop.

The present invention is a brake light system in which the brake light is illuminated when the accelerator is rapidly released.

In Figure 1 a sudden stop early detection brake light system with varying intensity is shown. Pressure applied to the accelerator pedal 110 causes pressure transducer 120 (of piezo electric type for example) to generate an analog signal that is proportional to pressure applied to accelerator pedal 110. Pressure transducer 120 transmits signal to differentiator 125. Differentiator generates signal that is transmitted to A/D converter 130, the strength of which is stronger the more rapid the decrease in the strength of the signal transmitted by transducer. The analog signal from differentiator 125 is converted by A/D converter 130 to a digital signal and transmitted to program logic device 140. Program logic device 140 transmits signal to brake light driver A 150, brake light driver B 155 and brake light driver C 157. Brake light driver A 150, brake light driver B 155 and brake light driver C 157 sends electric current to brake light A 160, brake light B 165 and brake light C 167 as shown, which causes brake light A 160, brake light B 165 and brake light C 167 to illuminate. The algorithm contained in program logic device 140 is programmed such that the greater the pressure applied to brake pedal 110, the greater the number of brake light drivers the program logic device 140 transmits signals to and consequently the greater the number brake lights that are illuminated. For example program logic device 140 could transmits a signal to

brake light driver A 150,

when accelerator 110 is released fairly rapidly;

brake light driver A 150 and brake light driver B 155,

when accelerator 110 is released very rapidly;

brake light driver A 150 and brake light driver B 155 and brake light driver C 157,

when accelerator 110 is released extremely rapidly.

The present invention is not limited to the number of brake lights and drivers shown.

Figure 1 A sudden stop early detection brake light system with varying intensity