发明名称 POSITION DETECTOR
摘要 A position sensor is provided comprising a coil(1) and an electric conductor (2) or magnetic member (3) both arranged so that the size of their overlapping area (p) is varied as the position of an object to be examined changes, a resistor (6), a capacitor (4), a comparator (5) of an inverse output type, and a timing circuit (50a) arranged for uniformly restraining the period (T) of a continuous oscillating motion, wherein a displacement of the object to be examined is detected as a change in the time duration (t) which extends from the leading end of the period (T) to a time when the output of the comparator (5) is turned to a high level as timed with substantially the trailing end of the period (T). The resistance of the resistor (6) is determined so that a change in the time duration (t) remains minimum when the resistance of the resistor (6) is varied and when the temperature is at a predetermined degree. As the result, the linearity of the output can be improved over variation of both the temperature and the position. <IMAGE>
申请公布号 EP1382938(A1) 申请公布日期 2004.01.21
申请号 EP20020720449 申请日期 2002.04.17
申请人 LEVEX CORPORATION 发明人 TODA, SEIJI;OSHIE, NAOMASA
分类号 G01D3/028;G01D3/036;G01D5/20;(IPC1-7):G01D5/20;G01D5/243 主分类号 G01D3/028
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