Patent Number: 6,166,645

Title: Road surface friction detector and method for vehicles

Abstract: A road surface friction detector for use in a vehicle. The detector provides information regarding the integrity of a road surface to an operator of the vehicle. The detector is made up of three main parts, a sensor unit, a display unit and a microprocessor unit. The sensor unit is made up of a first sensor unit and a second sensor unit. The first sensor unit contains a first light source which directs light at the road surface to be reflected back to a first light receiver. The amount of light that returns to the first light receiver corresponds to various conditions on the road. The second sensor unit is made up of a second light source, second light receiver and a reflective element. The second light source directs light at the reflective element which is located between the second light source and the road. The light from the second light source is then reflected off of the reflective element to the second light receiver. The second sensor unit provides a controlled reflective environment against which the level of interference due to dirt and debris may be measured. The display unit is what relays the information that is gathered by the sensor unit to the operator of the vehicle in a manner in which it may be used. The microprocessor unit receives, translates and transmits data to and from the sensor and display units.

Inventors: Blaney; Kevin (Englewood, CO)


International Classification: G08B 19/00 (20060101); G08B 19/02 (20060101); G08B 019/02 ()

Expiration Date: 12/26/2017