Large space blind area of fire hazard detecting system based on ZigBee

A detection system, large space technology, applied in fire rescue, signal transmission system, instruments, etc., can solve the problems of large environmental variables, inability to effectively carry out all-round protection, and large safety hazards, and achieve the effect of convenient networking

Inactive Publication Date: 2007-10-24
SHANGHAI FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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Problems solved by technology

[0002] After the design and installation of the traditional large-space fire safety detection system, due to the large environmental variable factors and unpredictable obstructions, the image flame detection, point smoke detection and temperature detection will cause detection blind spots There are many problems, such as large potential safety hazards, ineffective comprehensive protection, etc.

Method used

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  • Large space blind area of fire hazard detecting system based on ZigBee

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Embodiment Construction

[0010] A preferred embodiment of the utility model is described in detail as follows:

[0011] 1. Base station 2 uses TMS320M642 processor 22 as the core device, with a working frequency of 720MHz and a processing capacity of 5760MIP / S.

[0012] a. The bus interface 21 adopts RS485 bus interface, full-duplex communication mode.

[0013] b. The memory 23 is a NAND-FLASH K9F2808U memory with a storage capacity of 16M×8 bits.

[0014] c. The radio frequency module 24 of the base station adopts MC13192, the working frequency is 2.4G, and the transmission distance is 40m~100m. The physical layer adopts direct sequence spread spectrum technology, and the protocol layer adopts CSMA carrier sense technology to ensure the reliability and anti-interference ability of the work.

[0015] d. The radio frequency antenna 25 adopts MD24-10, the working frequency is 2.4G, the radio frequency transmission power is -20dBm, the radio frequency reception sensitivity is -80dBm, and the data rate i...

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Abstract

The invention belongs to fire-extinguishing device technique, which in detail is a ZigBee-based detection system for fire blind area in large space, comprising fire safety monitoring system, base station and terminal end. The system contains 64 base station in maximum, and each base station possesses 254 terminal end at most. The terminal end comprises terminal end radio frequency module and fire detection device. The base station mainly comprises main wire interface, memory, processor, base station radio frequency module and antenna. The terminal end radio frequency module conveys collected signal of temperature and smoke concentration in fire protection area to base station through 2. 4 G section distance wireless communication technique, the processor analyzes received signal and confirms whether there is a fire, and output space coordinates of fire for immediate alarm. The lower computer in this invention is separate short distance wireless communication network, and it is characterized by flexible and convenient net forming style and safe and reliable performance. It can solves shade problem in image smoke-feel type fire detection, point smoke-feel fire detection and temperature-feel detection in large area.

Description

technical field [0001] The invention belongs to the technical field of fire fighting equipment, and in particular relates to a ZigBee-based large-space fire blind area detection system, which can solve the problem of fire detection blind areas in the large-space fire detection system in real time and quickly. Background technique [0002] After the design and installation of the traditional large-space fire safety detection system, due to the large environmental variable factors and unpredictable obstructions, the image flame detection, point smoke detection and temperature detection will cause detection blind spots There are many problems, such as large potential safety hazards, inability to effectively carry out all-round protection, and many other problems. Contents of the invention [0003] The object of the present invention is to provide a fire blind area detection system capable of real-time and rapid resolution of large-space fire detection self-area. [0004] The...

Claims

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Application Information

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IPC IPC(8): A62C3/02G08C17/00G08C17/02
Inventor 薛林闵永林李建中吴海卫徐琰洪赢政汪萍萍陈伟顾裕平
Owner SHANGHAI FIRE RES INST OF THE MIN OF PUBLIC SECURITY
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