| 摘要 |
PURPOSE:To detect accurately the quantity of relative displacement between a vehicle and a rod surface as absolute displacement by providing a signal detecting part, an arithmetic processing part, and a signal output part. CONSTITUTION:The signal detection part I consists of a main signal detecting means 1a, a signal processing circuit 1b, a reference signal detecting means 2a, and a signal amplifying circuit 2b. The relative displacement between the body of the vehicle and road surface is extracted by the means 1a and 1b as a distance proportional signal X. Further, the means 2a and 2b detects the fine attitude variation, etc., of the vehicle and performs specific amplification to output a reference signal Y. Then, an arithmetic processing part II consists of a signal arithmetic circuit 3 which inputs the signal Y and a subtracting circuit 4 which inputs its output Y1 and the signal X. The circuit 3 processes the signal Y into a signal Y1 and their difference (X-Y1) is outputted. Then, the signal output part III records, displays, and outputs the profile of the road surface as a specific analog or digital signal, and consists of, for example, a recorder 5. |
