发明名称 |
FREQUENCY COMMUNICATIONS SCHEME IN LIFE SAFETY DEVICES |
摘要 |
<p>A method of radio frequency communication for a life safety device including a controller, a hazardous condition sensor, an alarm device, and a radio frequency communications device including transmitting and receiving capability. One method includes receiving a test signal using the radio frequency communications device, lowering a voltage to the hazardous condition sensor to simulate a hazardous condition to test the hazardous condition sensor, and emitting an alarm using the alarm device if the hazardous condition sensor passes the test. Another method includes before transmitting a radio frequency signal, turning on the radio frequency communications device for a period of time, and delaying transmission if the radio frequency communications device receives a header, deadtime and startbit. Yet another method includes sending a test signal at a first transmission power level, and sending an alarm signal at a second transmission power level greater than the first transmission power level.</p> |
申请公布号 |
EP1803102(A4) |
申请公布日期 |
2008.12.10 |
申请号 |
EP20050812500 |
申请日期 |
2005.10.17 |
申请人 |
WALTER KIDDE PORTABLE EQUIPMENT, INC. |
发明人 |
ANDRES, JOHN, J.;BUCHOLZ, MATTHEW, J.;BURNETTE, STANLEY, D.;SILVER, TRAVIS |
分类号 |
G08B1/08 |
主分类号 |
G08B1/08 |
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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