초록 ▼

A network of identical atmospheric hazard detectors communicates a locally sensed hazard condition directly to multiple neighboring detectors using RF command communication, without the use of wires and without a central control location. Each detector includes a sensor of an atmospheric hazard, a d

A network of identical atmospheric hazard detectors communicates a locally sensed hazard condition directly to multiple neighboring detectors using RF command communication, without the use of wires and without a central control location. Each detector includes a sensor of an atmospheric hazard, a detection circuit for measuring the sensor output and creating a local hazard signal, an alarm indicator, an RF transmitter for sending a neighboring hazard signal to the network, and an RF receiver for receiving a neighboring hazard signal from the network. The local alarm and neighboring alarm control signals produce discernibly different alarm indications from the detector's alarm device, facilitating an attempt to locate the origin ofa hazard. In the preferred embodiment, every detector functions as a receive/transmit relay station, enabling the network to be extended in spatial expanse without limit and without increasing the power output of the RF transmitter. Auxiliary devices are included, for example, a radio controlled light for emergency illumination.

대표청구항 ▼

[ What is claimed is:] [1.] A network of atmospheric hazard detectors, each detector comprising:(a) alarm-indication means for producing at least one human-perceptible alarm indication;(b) a sensor for sensing the presence of an atmospheric hazard and creating a sensor output;(c) detection means for

[ What is claimed is:] [1.] A network of atmospheric hazard detectors, each detector comprising:(a) alarm-indication means for producing at least one human-perceptible alarm indication;(b) a sensor for sensing the presence of an atmospheric hazard and creating a sensor output;(c) detection means for measuring said sensor output and creating a local hazard signal when said atmospheric hazard exceeds a predetermined danger level;(d) an RF receiver for receiving a neighboring hazard signal from a neighboring atmospheric hazard detector when a dangerous-level output is detected by the neighboring detector;(e) an RF transmitter for sending a neighboring hazard signal to at least one neighboring atmospheric hazard detector upon said local hazard signal being created, without needing to wait for a synchronizing interval; and(f) alarm-selection means for producing a local alarm control signal whenever said local hazard signal is present, and for producing a neighboring alarm control signal when said neighboring hazard signal is present but said local hazard signal is absent.