Intelligent composite multiple-sensor fire detector

Abstract

The intelligent fire detector suitable for use in LonWorks fire-fighting measuring and controlling network includes casing, metal silk screen, Neuron C chip and communication transceiver, outer memory, outer clock, driving power source for multiple sensors, sensor signal acquisition device and sensor assembly, and control signal output interface. In the outer memory, are stored LonTalk communication protocol, application software and relevant data and measured results. The sensors feed data include various measured results to the host controller, and the dataare reliable base for the monitoring personnel to perform qualitative and quantitative analysis and early-stage forecast without missing and false alarm.

Description

technical field [0001] The invention relates to a fire alarm detection device. Background technique [0002] A known device for misfire detection including a misfire sensor and a non-misfire sensor is Chinese patent CN1129833A. This multi-sensor detection device includes: first sensor - fire, gas, temperature intrusion sensor; second sensor - humidity, ambient pollution level, time of day, or whether there is sunlight or whether there is a person. An output from the first sensor indicating a fire or gas condition can only function in the absence of an output from the second sensor, the ambient sensor. In one version, the outputs of the two sensors are coupled by a circuit performing an "AND" function. In another version, the apparatus may include control elements for processing the outputs from both sensors. The control unit can be equipped as a programmable microprocessor. In yet another aspect, the output can be transmitted to and processed by a remote fire control pane...

AI Technical Summary

Problems solved by technology

[0012] (2) The phenomenon of misfire combustion is an unstable combustion phenomenon, which is also unsteady, and can only be expressed by a set of time functions. There is no such mathematical description at present

[0015] Therefore, so far, people have not been able to establish a definite quantitative relationship and logical relationship between the output signals of different fire detectors.

Therefore, the fire detection and alarm method based on the logical relationship of sensor signals will inevitably have the possibility of false alarms.

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