Radio frequency controlled system for testing emergency lighting

Details Radio frequency controlled system for testing emergency lighting Radio frequency controlled system for testing emergency lighting

1995-12-21

1999-07-27

Mojica, V Lissi

Communications: electrical

Continuously variable indicating

With meter reading

34082569, 340635, 340641, 34082517, 315134, G08B 2900

Patent

active

059297816

ABSTRACT:
An system is provided for testing emergency lighting units using a receiver connected to the emergency lighting unit and a portable transmitter operable remotely with respect to the emergency lighting unit. The emergency lighting comprises a transfer relay for switching a battery between a primary power source and a lamp. A TEST button and the receiver each include a normally closed contact switch connected in series with each other, as well as with a primary power source input and transfer control circuitry. The transmitter generates encoded signals for wireless transmission to the receiver as long as a control switch on the transmitter is being activated by a user. The receiver receives and decodes the encoded signals and opens its normally closed relay as long as encoded signals are being received, causing the transfer control circuitry to activate the transfer relay to switch the battery from the primary power source to the lamp. The transmitter terminates transmission of encoded signals when the user deactivates the control switch. The receiver then closes its normally closed relay when encoded signals are no longer received, and the transfer control circuitry via the transfer relay switches the battery from the lamp to the primary power source for charging.

REFERENCES:
patent: 4725827 (1988-02-01), Gallegos et al.
patent: 4899267 (1990-02-01), Mardon
patent: 4908602 (1990-03-01), Reich et al.
patent: 4908604 (1990-03-01), Jacob
patent: 4977353 (1990-12-01), Helal et al.
patent: 5148158 (1992-09-01), Shah
patent: 5154504 (1992-10-01), Helal et al.
patent: 5365145 (1994-11-01), Fields

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