Distance Measuring Equipment with headrest and head, range measurement method with headrest and head, headrest position adjusting device, and headrest position adjustment method

摘要

Headrest position adjusting device 100 Distance Measuring Equipment has with 10 and drive motor 30, Distance Measuring Equipment 10 plural inspection electrodes has with 11 - 15 and the detector 20. The detector 20 the plural capacitance inspection circuits has with 21 which are connected with each inspection electrode 11 - 15 and pair one - 25 and the transaction of operation circuit 28, drive motor 30 has with the motor drive circuit and the drive motor. The detector 20 calculates the distance calculation angle which, in the point which shows the position and output value of inspection electrode 15,11 of best arrangement and the lowest arrangement on the basis of the capacitance value which is detected and the point where position and output value of installed capacity value are shown is formed measures the distance L between the electrode head. Position adjustment operation of headrest 43 is done on the basis of the measurement result.