| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an ultrasonic sensor system capable of detecting the position of an object within a detection area while suppressing cost. <P>SOLUTION: An ultrasonic sensor system includes: an ultrasonic sensor 1 having a microphone 10 for transmitting an ultrasonic wave toward an object in a predetermined cycle and receiving a reflection wave, and a signal processing section 11 for converting the ultrasonic wave transmitted and received by the microphone 10 into an electric signal; and a control device 2 for detecting the position of the object on the basis of the electric signal acquired by the ultrasonic sensor 1. The control device 2 has an operation section 20 for calculating a detection distance being a distance to the object in a predetermined cycle on the basis of transmission and reception waves of an ultrasonic wave of the ultrasonic sensor 1, and a storage section 21 for storing information of the detection distance of at least one cycle before. The operation section 20 detects the position of the object from information on a present detection distance X2 between the present ultrasonic sensor 1 and the object in a moving state in parallel with the object and information on a past detection information X1 between the ultrasonic sensor 1 and the object of one cycle before. <P>COPYRIGHT: (C)2013,JPO&INPIT |
