Fire alarm system

An alarm system and fire protection technology, applied in transmission systems, digital transmission systems, error prevention and other directions, can solve the problems of inconvenient management, high cost, complex composition and structure, and achieve fast communication speed, high success rate and strong communication ability. Effect

Inactive Publication Date: 2018-11-27
吉林省瑞中科技有限公司
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a fire alarm system that overcomes the complex structure, high cost, and inconvenient management of the fire alarm system in the prior art, so as to provide a fire alarm system that can effectively control the fire alarm system during use. Intelligent fire alarm,

Method used

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Examples

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Comparison scheme
Effect test

Embodiment Construction

[0020] Fire alarm system, including the following steps

[0021] Step 1. Information sending: The controller sends information through the loop card or communication circuit in the form of a data stream at the same time as a plurality of the fire-fighting communication terminals, and the controller should convert the 8 address bit data into binary before sending the information. Data; each frame of information sent by the controller is composed of a synchronization signal and a superimposed signal of a clock signal and a data signal; for each frame of information sent by the controller, the clock signal is from each frame of information. A series of clock signals separated from the superimposed signal, the data signal including 1-bit type bit data, 8 address bit data, a plurality of control bit data and 1 odd / even parity bit data;

[0022] Step 2: Information transmission: the loop card or communication circuit synchronously transmits the information sent by the controller t...

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PUM

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Abstract

The invention discloses a fire alarm system which comprises a controller, a plurality of loop circuits matching the controller or a communication circuit connected with the controller, and a pluralityof fire-fighting communication terminals. The communication frame of the information transmitted and received between the controller and the plurality of fire-fighting communication terminals comprises, from front to back, a reply message composed of 1 type data bit, 8 address data bits, multiple control data bits, 1 odd/even check bit, and multiple PW pulses, and a synchronizing signal. The communication method includes the following steps of information transmission, information transfer, information reception, analysis and judgment, and information reply. The fire alarm system is novel andreasonable in design, good in use effect and high in intellectualization degree, and can transmit information to the plurality of fire-fighting communication terminals simply, timely and accurately,realizes the real-time two-way communication between the controller and the plurality of control terminals of the fire alarm system, and achieves fast communication speed and accurate data transmission.

Description

technical field [0001] The invention belongs to the technical field of two-way communication of fire alarm systems, in particular to a communication method for fire alarm systems based on a two-way serial communication protocol. Background technique [0002] At present, the problem of information transmission among the components of the fire alarm system is mainly realized by the manufacturers through binary coding. Specifically, the information of 0 and 1 is judged by the way of distinguishing the high and low levels of the circuit, and the 0 and 1 bits are encoded differently. convey different information. Although the above traditional method can solve the problem of information transmission, it has the problems of slow information transmission and high bit error rate, and because the fire alarm system is a special real-time working system, it requires the system to work stably at all times and respond quickly and reliably. The information is transmitted and processed, o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04M11/04H04L1/00
CPCH04L1/0006H04M11/04
Inventor 杨宏飞
Owner 吉林省瑞中科技有限公司
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