发明名称 |
INFRARED DETECTING DEVICE |
摘要 |
PROBLEM TO BE SOLVED: To provide an infrared detecting device capable of reducing size of a circuit configuration by providing common use of a voltage amplifying circuit and a timer circuit in a side detecting a human body. SOLUTION: This device is provided with a pyroelectric element 1, an I/V converting part 2 converting an output current of the pyroelectric element 1 into voltage and outputting it, a signal detecting part 3 mainly detecting a human body from the output voltage of the I/V converting part 2, and a popcorn noise detecting part 4 detecting popcorn noise from the output voltage of the I/V converting part 2. The signal detecting part 3 has the voltage amplifying circuit 31 amplifying the output voltage of the I/V converting part 2 and outputting it. A plurality of switches for switching to the timer circuit 31' is provided inside the voltage amplifying circuit 31. A control part 5 is provided for controlling the switches when the popcorn noise is detected. |
申请公布号 |
JP2002071834(A) |
申请公布日期 |
2002.03.12 |
申请号 |
JP20000264269 |
申请日期 |
2000.08.31 |
申请人 |
MATSUSHITA ELECTRIC WORKS LTD |
发明人 |
MURAYAMA YORINOBU;MATSUDA HIROSHI;SAKAMOTO SHINJI;HATAYA MITSUTERU |
分类号 |
G01V8/12;G01J1/42;G01J5/10;H03K17/945;(IPC1-7):G01V8/12 |
主分类号 |
G01V8/12 |
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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