A method of filtering and a / d - transducer device with a filter function

摘要

Filtering method comprising the steps of:sliding averaging of analog input signals with an analog sliding mean value filter (2), of the input signals in the case of each constant period in synchronism with the clock means of a sampling frequency fsa;A / d - conversion, the analog input signals with a sliding mean value formed with an a / d - transducer (4); andsliding averaging of the digital data, which are formed by the a / d - conversion were obtained, with a digital sliding mean value filter (6), which the input data in the case of a sampling frequency scans fsd, the n - times (where n is a positive integer value, including 1) is the sampling frequency fsa, and a mean value of the scanned data is calculated, which in recent times have been obtained, the scanning,and the generation of digital data from an analog input signal after the removal of unnecessarily high frequency signal components.