发明名称 |
Rate of ascent monitor using piezoelectric transducer |
摘要 |
A rate of ascent monitor for drivers uses a sound transducer with velocity characteristics, preferably a diaphragm type piezoelectric transducer, to sense rate of pressure change, and a threshold detector connected to the transducer to drive an indicator providing a warning of an excessive rate of ascent. A second threshold detector can be used to discriminate between descending and ascending motion. The device can be a compact wrist mounted unit.
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申请公布号 |
US4820953(A) |
申请公布日期 |
1989.04.11 |
申请号 |
US19870124050 |
申请日期 |
1987.11.23 |
申请人 |
SAUBOLLE, MALCOLM;DE BLASI, ITALO;LIVSHITZ, STANLEY |
发明人 |
SAUBOLLE, MALCOLM;DE BLASI, ITALO;LIVSHITZ, STANLEY |
分类号 |
B06B1/06;G01L9/00;G01P3/62;(IPC1-7):H01L41/08 |
主分类号 |
B06B1/06 |
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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