发明名称 |
Optical sensor apparatus and signal processing circuit used therein |
摘要 |
An optical sensor apparatus capable of accurate measurement without using a filter circuit, and therefore being further capable of pulse driving an LED and thus reducing power consumption, is provided. To achieve such an optical sensor apparatus, when an optical current sensor 10 is not sensing the current to be measured, an optical current sensor signal processing circuit 11 first supplies dc light of a specific intensity to the optical current sensor 10, and then adjusts the intensity of the light so that the intensity of light returned from the optical current sensor 10 to the signal processing circuit 11 is a specific predetermined value. When the optical current sensor 10 is sensing the current, the signal processing circuit 11 electrically processes the optical signal from the optical current sensor 10 to measure the current. <IMAGE> |
申请公布号 |
EP0919790(A3) |
申请公布日期 |
2000.04.19 |
申请号 |
EP19980122171 |
申请日期 |
1998.11.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
TAGIRI, SATOSHI;ISHIKO, DAISUKE |
分类号 |
G01D5/34;G01D5/347;G01J1/44;G01R15/24;G01R19/00 |
主分类号 |
G01D5/34 |
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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