发明名称 |
Magnetic detection device and physical quantity detection device using same. |
摘要 |
A magnetic detection device including at least one oscillator circuit having a magnetoresistance element which converts a change of magnetism detected into a digital signal and a comparator for comparing the digitalized oscillating frequency of the oscillator circuit with another digitalized oscillating frequency generated from another oscillating circuit by taking a ratio thereof or by detecting a phase difference between the pulse signals. Utilizing the magnetic detection device, the amount of change of magnetism can be stably detected with a high accuracy within a wide range of ambient usage temperatures. Also, a physical quantity detection device including the magnetic detection device which can detect any physical quantity with a high accuracy.
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申请公布号 |
EP0379180(A2) |
申请公布日期 |
1990.07.25 |
申请号 |
EP19900100943 |
申请日期 |
1990.01.17 |
申请人 |
NIPPONDENSO CO., LTD. |
发明人 |
WATANABE, TAKAMOTO;OHTSUKA, YOSHINORI;MATSUMOTO, MUNEAKI;HATTORI, TADASHI;HOSHINO, KOUICHI;OHSAWA, MASANORI;NAKAMURA, KATSUMI |
分类号 |
G01D5/14;G01D5/16;G01R33/09 |
主分类号 |
G01D5/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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