Remote Output System and Method

• US 20090284379A1
• Filed: 05/13/2008
• Published: 11/19/2009
• Est. Priority Date: 05/13/2008
• Status: Active Grant

• Current Assignee: Life Safety Distribution AG (Honeywell International Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Frison, Andrea
• Granted Patent: US 7,986,226 B2
• Time in Patent Office: Days
• US Class Current: 340/577
• CPC Class Codes: G08B 13/00 Burglar, theft or intruder alarms
• CPC Class Codes: G08B 17/00 Fire alarms; Alarms responsive to explosion
• CPC Class Codes: G08B 7/06 using electric transmission , e.g. involving audible and visible signalling through the use of sound and light sources
• CPC Class Codes: H04Q 9/00 Arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom

Abstract

An ambient condition monitoring system includes a plurality of detectors such as smoke detectors, gas detectors, or fire detectors. Each of the detectors has two sets of input/output ports. One port can communicate with a system control unit. The second port can communicate with a local wired network to which is coupled a plurality of output devices. The output devices can be activated by the respective detector using a modulated control signal.

Claims

1. An apparatus comprising:

a housing, the housing carrying a selected externally accessible port;

an ambient condition sensor carried by the housing; and

control circuits in the housing, coupled to the sensor, the control circuits include modulation circuits, responsive to a predetermined condition, which generate one of a frequency modulated or an amplitude modulated signal at the port.

2. An apparatus as in claim 1 where the modulated output signal can activate at least one of a strobe or a sounder.

3. An apparatus as in claim 2 where the control circuits respond to an acknowledgement signal received at the selected port.

4. An apparatus as in claim 1 where the sensor is selected from a class which includes a smoke sensor, a gas sensor, a fire sensor, an intrusion sensor, a position sensor, and a thermal sensor.

5. An apparatus as in claim 4 where the control circuits include storage to specify modulated signal output characteristics for at least one output device.

6. An apparatus as in claim 5 where the control circuits include storage to specify modulated signal output characteristics for a plurality of output devices

7. An apparatus as in claim 5 where the control circuits include a programmable processor and executable control software.

8. An apparatus as in claim 7 where the software when executed, generates sequences of modulated output signals, at the port, the signals specify output characteristics of a plurality of predetermined output devices.

9. An apparatus as in claim 8 where the software responds to the existence of the predetermined condition and, subsequently generates a sequence of modulated output signals.

10. An ambient condition monitoring system comprising:

a plurality of ambient condition detectors with each of the detectors having a communications interface with a first port couplable to a respective communications medium;

a system control unit with a system port couplable to the medium where at least one of the detectors includes,

a housing, the housing carrying an externally accessible second port;

an ambient condition sensor carried by the housing; and

control circuits in the housing, coupled to the sensor, the control circuits include modulation circuits, responsive to a predetermined condition, which generate one of a frequency modulated or an amplitude modulated signal at the second port.

11. A system as in claim 10 which includes a plurality of devices couplable to the second port of the at least one detector, the members of the plurality include input or output devices.

12. A system as in claim 11 where the output devices include audible output devices, visual output devices to indicate the presence of the predetermined condition, or actuators, the input devices include switches.

13. A system as in claim 12 where the control circuits of the at least one detector establish the presence of the predetermined condition.

14. A system as in claim 13 where the control circuits couple a signal indicative of the presence of the predetermined condition to a respective first port of the at least one detector.

15. A system as in claim 14 where the devices are coupled to the second port by a wired medium.

16. A system as in claim 15 where the detectors are coupled to the system control unit by a second, different medium.

17. A system as in claim 16 where the second medium includes, at least in part, one of a wired portion, or a wireless portion.

18. A system as in claim 12 where the devices include demodulation circuitry, circuitry that receives power from the second port, and control circuits responsive thereto.

19. A detector/output device combination comprising:

an ambient condition detector with first and second bidirectional interfaces and control circuits coupled therebetween;

at least one output device selected from a class which includes an audible output device and a visual output device, the output device including a bidirectional communications interface; and

an electrical conduit coupled between one interface of the detector and the bidirectional communications interface of the output device with the detector and the output device in bidirectional communication via the electrical conduit.

20. A combination as in claim 19 where the detector receives electrical energy from the other interface and which includes circuitry that couples at least a portion thereof, via the one interface, to the output device.