Patent ID: 9000902
Filing Date: 2015-04-07
Classification: G01S

Abstract:
1. A driver assistance system for detecting surroundings of a motor vehicle, comprising: at least two sensors to transmit wireless signals and to detect any reflected echo signals, the sensors having an identical design, each of the sensors having an analyzer unit to ascertain a signal propagation time, and a comparator module for comparing the ascertained signal propagation time with that ascertained by at least one preceding sensor in a bus system wherein the sensors are connected to each other via the bus system; an output/display unit to transmit a result of the detection of the surroundings to a driver, the sensors being connected to the output/display unit via the bus system; wherein each of the analyzer units has a conversion module to ascertain an object distance from the signal propagation time; wherein each sensor evaluates the object distance and each sensor identifies its detection result in a data message via the bus system such that the data message includes all detection results of all the sensors, and each subsequent sensor compares by the comparator module its own detection result with one of: (i) all the detection results of all the sensors; or (ii) only with an identified minimum object distance ascertained from the conversion module; and wherein the data message is modified when the detection result is less than the other detection results or the minimum object distance.