Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging

• US 5,493,272 A
• Filed: 01/27/1994
• Issued: 02/20/1996
• Est. Priority Date: 12/07/1990
• Status: Expired due to Term

• Current Assignee: G P B Beghelli SRL
• Original Assignee: G P B Beghelli SRL
• Inventors: Beghelli, Gian P.
• Primary Examiner(s): Williams, Hezron E.
• Assistant Examiner(s): Oda, Christine K.
• Application Number:
  US08/187,805
• Time in Patent Office: 754 Days
• Field of Search: 340/505, 340/518, 340/825.07, 340/825.06, 340/825.54, 340/514, 340/691, 340/331, 340/332, 340/501
• US Class Current: 340/505
• CPC Class Codes: G08B 25/04 using a single signalling line, e.g. in a closed loop
• CPC Class Codes: G08B 25/06 using power transmission lines
• CPC Class Codes: G08B 29/14 checking the detection circuits
• CPC Class Codes: H05B 47/105 in response to determined parameters

Abstract

Emergency lighting system with alarm for fire, gas and ambient air pollution with automatic monitoring and battery recharging utilizing a bus and a microprocessor circuit whose input and output signals regulate the programming. A sensor for one or more environmental hazard factors is connected to the data bus.

Claims

1. A lighting system comprising:

a data bus;

a plurality of individual lighting devices connected to said bus for emergency lighting in response to signals transmitted along said bus, each of said lighting devices including

a housing,

a light in said housing,

a rechargeable battery in said housing energizing said light,

at least one sensor energized by said battery in said housing exposed to an environment around said housing and which detects at least one environmental hazard factor selected from fire, harmful gas and air pollution, said sensor producing a respective signal representing detection of said factor, and

an alarm;

means connecting said sensors of said devices to said bus by a wave signal transmitted along a normal electrical supply network for transmitting said respective signal representing detection of said environmental hazard factor;

means including a microprocessor connected by a wave signal transmitted along a normal electrical supply network at a central station to said bus for receiving and transmitting and analyzing emergency signals adapted to be carried along said bus and for triggering said alarms from said central station;

means for carrying out programmed self-analysis of said devices along said bus;

electrical supply means connected to said bus for supplying said lighting devices with electrical energy and including a programmable recharging circuit connected to said lighting devices, a circuit for determination of a charging condition connected to said lighting devices, and means for detection of incipient faults, said electrical supply means including a microprocessor circuit connected to said bus with input and output signals for regulating programmed and sequential sequences effecting centralized control, testing and diagnosis of emergency lighting circuits of said lighting devices and of fire, harmful gas and air pollution signals from said sensors;

means at said devices for triggering said alarms directly therefrom without said central station.

2. The system defined in claim 1, further comprising means for remote radio activation of the system.

3. The system defined in claim 1, further comprising means for telephone activation of the system.