Electricity: battery or capacitor charging or discharging – Serially connected batteries or cells – With discharge of cells or batteries
Patent
1988-06-16
1990-01-16
Hickey, R. J.
Electricity: battery or capacitor charging or discharging
Serially connected batteries or cells
With discharge of cells or batteries
250342, 307 66, 320 48, 340567, 362276, G01J 518, G08B 1318, F21V 3300, H02J 700
Patent
active
048946010
ABSTRACT:
A testing and battery exercising method and control for an emergency lighting unit, which is activated by a drop in voltage of a primary power source, provides for frequency testing of the unit by utilizing a control unit in conjunction with an infrared sensor and photocell to control a voltage reduction simulation device. The control device includes a means for sensing a change in a heat pattern over a pre-determined illumination area, a means for sensing ambient light in the illumination area, a means for simulating a reduction in voltage of a primary power line and control a unit which causes a reduction in voltage to be simulated to turn on the emergency lighting unit only when a change in the heat pattern and the illumination area is detected while the ambient light over the illumination area is below a threshold value.
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Infracon.RTM. Technical Brochure, "Recessed Ceiling Unit", 2/1988.
Infracon.RTM., "Wide View Occupancy Sensor Model 700", 11/1987.
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Infracon.RTM. Case Study, "World Trade Center", 5/1984.
Hickey R. J.
Oxenham J. Preston
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