Method of compressed transmission of data of an ultrasonic sensor system by non-transmission of detected unimportant signal objects

摘要

The invention relates to a method for transmitting sensor data, in particular an ultrasonic sensor, from a sensor to a computer system, in particular in a vehicle, comprising the steps a) of emitting an ultrasonic burst and b) receiving an ultrasound signal and forming a discrete-time signal Receiving signal consisting of a sequence of samples comprises, each sample is associated with a time date (time stamp). Furthermore, the method comprises the determination of a first parameter signal of a first property with the aid of a first filter from the sequence of samples of the received signal. In this case, the parameter signal is designed as a time-discrete sequence of parameter signal values. Each parameter signal value is assigned exactly one time date (time stamp). The method also includes determining at least one further parameter signal of a property associated with this further parameter signal with the aid of a further filter assigned to this further parameter signal from the sequence of sample values of the received signal. The further parameter signals are each designed as time-discrete sequences of further parameter signal values. Each additional parameter signal value is assigned the same time date (time stamp) as the corresponding parameter signal value. The first parameter signal and the other parameter signals together are also referred to as a feature vector signal. The feature vector signal is thus designed as a time-discrete sequence of parameter vector signal values, also referred to below as feature vector signal values. These consist of the parameter signal values and other parameter signal values, each with the same time date (time stamp). Each feature vector signal value thus formed is assigned this respective temporal date (time stamp). The method further comprises comparing the feature vector signal values of a temporal datum with a threshold vector to form a boolean result that may have a first and a second value. The transmission of the feature vector signal values and the temporal date (time stamp) associated with this feature vector signal value from the sensor to the computer system takes place when the Boolean result for this time datum (time stamp) has the first value.