Patent ID: 7443075
Filing Date: 2008-10-28
Classification: E05F,E05Y,H01L,H03K,Y10S

Abstract:
1. An entrapment detecting system, comprising: a detection portion provided at an opening/closing apparatus for detecting an acceleration of the opening/closing apparatus on the basis of an output from a piezoelectric sensor for outputting a voltage corresponding to the acceleration of the opening/closing apparatus; and a control portion for judging whether or not an object is entrapped by the opening/closing apparatus on the basis of a detected result of the detection portion, wherein the detection portion includes a current control portion connected to the control portion in series as a closed circuit whereby electricity is supplied from the control portion to the current control portion, the current control portion for changing a consumed current of the detection portion on the basis of the output from the piezoelectric sensor, and the control portion judges whether or not the object is entrapped by the opening/closing apparatus on the basis of the consumed current of the detection portion changed by the current control portion.