发明授权
- 专利标题： Position measuring device and error detecting method for the same, and electromagnetic induction position detecting device
- 专利标题（中）： 位置测量装置及其误差检测方法及电磁感应位置检测装置
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申请号： US09804300申请日： 2001-03-13
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公开(公告)号： US06636035B2公开(公告)日： 2003-10-21
- 发明人: Tetsuro Kiriyama , Toshiharu Miyata , Nobuyuki Hayashi , Kouji Sasaki , Yoshiaki Shiraishi
- 申请人： Tetsuro Kiriyama , Toshiharu Miyata , Nobuyuki Hayashi , Kouji Sasaki , Yoshiaki Shiraishi
- 优先权： JP2000-068412 20000313; JP2000-068715 20000313
- 主分类号： G01B700
- IPC分类号： G01B700
摘要：
In an electronic caliper, a detecting circuit 112 detects displacement of a grid with respect to a scale, on the basis of a signal from a transducer 110. A CPU 114 displays the detected position on a display device 124. The CPU 114 performs error detection on the transducer, only when the relative speed of the grid with respect the scale is zero, or becomes equal to or smaller than a predetermined value. Since error detection is performed only at a predetermined timing, power consumption can be reduced.
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