发明名称 |
Piezoelectric motion sensor |
摘要 |
A piezoelectric resilient arm contacts a projected object and establishes a reference relative to sensitivity means and differential detector means including feedback coupled amplifier means which operates in cooperation with a balanced square wave generator means for producing a switched output upon detecting motion. An alarm signal is produced which has a duration related to the rate of change of movement of the piezoelectric resilient arm. Programmable delay means appropriately enables an annunciator and/or wireless communication link to a system controller.
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申请公布号 |
US5258743(A) |
申请公布日期 |
1993.11.02 |
申请号 |
US19930000789 |
申请日期 |
1993.01.04 |
申请人 |
UNIPLEX CORPORATION |
发明人 |
NELSON, JON;WILLIAMSON, WILLIAM W. |
分类号 |
G08B13/14;(IPC1-7):G08B13/14 |
主分类号 |
G08B13/14 |
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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