Automatic electricity control monitoring exit/entry device
First Claim
1. An apparatus for controlling a power supply line in a building comprising;
- entry detection means including an infrared detector for producing detection signals in response to an entry into the building by a human being;
exit detection means including an infrared detector for producing detection signals in response to an exit out of the building by a human being;
counting circuit means for counting and producing signals from the detection signals produced by the entry and exit detection means;
switch means for presetting counting data;
comparator for comparing the signals produced by the counting circuit means and those produced by said means for presetting counting data;
controller circuit emans for receiving the on-off signal and for controlling the power supply line.
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Accused Products
Abstract
A device turns ON and OFF electrical power in a building in response to entry and exit of people. Four sets of infra red light emitters and receivers supply receiver signals to entry and exit monitor circuits having integrated circuits connected together to deliver down pulses by discrimination between the occurrence of infrared receiver signals. The count pulses are delivered to a counting circuit which is preset by a manually operated switch which supplies a preset signal to a comparator circuits which also receives the signal from the counting circuit to produce an ON-OFF signal. A controller circuit receives this ON-OFF signal and controls the electrical power in an electricity supply line.
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Citations
10 Claims
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1. An apparatus for controlling a power supply line in a building comprising;
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entry detection means including an infrared detector for producing detection signals in response to an entry into the building by a human being; exit detection means including an infrared detector for producing detection signals in response to an exit out of the building by a human being; counting circuit means for counting and producing signals from the detection signals produced by the entry and exit detection means; switch means for presetting counting data; comparator for comparing the signals produced by the counting circuit means and those produced by said means for presetting counting data; controller circuit emans for receiving the on-off signal and for controlling the power supply line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification