发明名称 |
Smoke detector with aspiration unit and flow sensor |
摘要 |
A detector includes a smoke sensor and an aspiration unit. The aspiration unit causes ambient air from a region directly adjacent to the detector to flow into a sensing region of the sensor. A flow monitoring sensor provides feedback to a control circuit to vary pulse modulated drive signals coupled to the aspiration unit. A plurality of variable resistance temperature sensors can be used for flow monitoring. Communication with the detector can be carried out via interface circuits. <IMAGE> |
申请公布号 |
EP1006500(A2) |
申请公布日期 |
2000.06.07 |
申请号 |
EP19990309678 |
申请日期 |
1999.12.02 |
申请人 |
PITTWAY CORPORATION |
发明人 |
SCHOENFELDER, GEORGE A.;SHOAFF, THOMAS;DALY, JULIETTE C.;GONZALES, ERIC V. |
分类号 |
G08B17/103;G08B17/10 |
主分类号 |
G08B17/103 |
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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