发明名称 |
Power line carrier controlled lighting system |
摘要 |
A power line carrier controlled lighting system connected to an AC power line. The system has: at least one motion detector for detecting at least one predetermined parameter in a detection zone of the motion detector, the motion detector outputting at least one detect signal in response to the predetermined parameter; at least one transmitter for transmitting during a first predetermined time period a power line carrier signal on the AC power line indicative of the detect signal; at least one receiver receiving the power line carrier signal on the AC power line and outputting at least one control signal indicative of the power line carrier signal during a second predetermined time period, the receiver having an AGC circuit for providing substantial noise immunity so that the receiver reliably recognizes the power line carrier signal; and at least one light in a predetermined area and having at least two different light intensity levels, the light having a switching circuit for switching between the light intensity levels, the switching circuit being activated by the control signal. The power line carrier signal is a digital signal and the AGC circuit determines a logical one/zero reference level relative to noise on the power line.
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申请公布号 |
US5227762(A) |
申请公布日期 |
1993.07.13 |
申请号 |
US19900604568 |
申请日期 |
1990.10.26 |
申请人 |
THOMAS INDUSTRIES INC. |
发明人 |
GUIDETTE, DAVID;OLSON, JAMES V.;MUNSON, ROBERT D.;GARNETT, WILLARD |
分类号 |
H04B3/54;H05B37/02 |
主分类号 |
H04B3/54 |
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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