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AssigneeOMRON Corporation
InventorsHoshibumi Ichiyanagi, Shinya Takenouchi, Yasuhiro Satoh, Hiroyuki Numata
Estimating the term…
The measurement of the distance or/and the relative velocity with fast response is to be achieved while the accuracy of measurement of the distance to an object in close range is maintained. A calculation-execution determination section determines whether or not an object is present within a predetermined range from the strength of a two-frequency Doppler signal sent from an A/D converting section and past calculated distance sent from a calculation selecting section. If the object is outside the predetermined range, the distance calculated by an FFT-method calculating section is output from a calculation output section via an calculation selecting section. If the object is within the predetermined range, one of the distance calculated by a time-interval-method calculating section and the distance calculated by the FFT-method calculating section is selected by the calculation selecting section, and is output from the calculation output section. The invention can be applied to a fast response system such as a precrash system.
A measuring apparatus that measures at least one of the relative velocity and the distance to an object using a mixed signal generated by mixing a transmission signal of a continuous predetermined frequency and a wave reflected from the object, the measuring apparatus comprising:
A measuring method of a measuring apparatus that measures at least one of the relative velocity and the distance to an object using a mixed signal generated by mixing a transmission signal of a continuous predetermined frequency and a wave reflected from the object, the measuring method comprising:
Dependencies are inferred from the claim text.