Communication method for fire alarm system based on two-way serial communication protocol

A serial communication protocol and alarm system technology, which is applied to alarms, duplex signal operations, instruments, etc., can solve the problems of slow information transmission and high bit error rate

Inactive Publication Date: 2011-12-21
XIAN SYST SENSOR ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned traditional methods can solve the problem of information transmission, there are problems such as 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 quickly and reliably respond to the corresponding Otherwise, if the fire alarm or control information cannot be sent to the corresponding department in time, it will cause serious consequences

Method used

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  • Communication method for fire alarm system based on two-way serial communication protocol
  • Communication method for fire alarm system based on two-way serial communication protocol
  • Communication method for fire alarm system based on two-way serial communication protocol

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Effect test

Embodiment 1

[0056] Such as figure 1 , figure 2 As shown, the fire alarm system applicable in the present invention includes a controller, a plurality of loop cards connected with the controller or a communication circuit connected with the controller and a plurality of fire communication terminals. The plurality of fire-fighting communication terminals respectively perform two-way communication with the controller through the plurality of loop cards or the communication circuits, and the loop cards or the communication circuits are connected to the fire-fighting communication terminals through communication lines. A plurality of described fire-fighting communication terminals comprises a plurality of detectors and a plurality of output control modules (specifically, an output control device that is used in conjunction with an alarm host, namely a controller, a fire characteristic or an early fire characteristic sensor, namely a detector and an alarm device, specifically In the fire alar...

Embodiment 2

[0103] to combine Figure 4 In this embodiment, the difference from Embodiment 1 is that the communication circuit includes a code pulling circuit 5 , a clock circuit 6 , a data circuit 7 and a power circuit 4 connected to the processing unit 1 .

[0104] The power supply circuit 4 includes a voltage stabilizing circuit 8, a capacitor C4, and a diode D1. The VDD pins of the processing unit 1 are divided into three routes, one of which is connected to the VDD power supply terminal, the other is grounded after passing through the capacitor C4, and the third is stabilized. The voltage circuit 8 and the diode D1 are then connected to the positive output end of the communication circuit.

[0105] The clock circuit 6 includes a triode Q3, a diode D3 and a voltage regulator Z3. The first pin of the processing unit 1 is connected to the VDD power supply end after passing through the resistor R10, and the first pin of the processing unit 1 is connected to the triode Q3. The electrodes...

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Abstract

The invention discloses a communication method for a fire alarm system based on a two-way serial communication protocol. The fire alarm system includes a controller, a plurality of loop cards matched with the controller or communication circuits connected with the controller and a plurality of The fire communication terminal, the communication frame of the information sent and received between the controller and multiple fire communication terminals consists of 1 type bit data, 8 address bit data, multiple control bit data, and 1 odd / even parity bit from front to back. Data, feedback information composed of multiple PW pulses, and a synchronization signal. The communication method includes the following steps: sending information, transmitting information, receiving information, analyzing and judging, and replying information. The invention is novel in design, reasonable in use effect, high in intelligence, can transmit information to multiple fire communication terminals in a simple, timely and accurate manner, and realizes real-time two-way communication between the controller of the fire alarm system and multiple control terminals and The communication speed is fast and the transmission data is accurate.

Description

technical field [0001] The invention belongs to the technical field of two-way communication of a fire alarm system, in particular to a communication method for a fire alarm system based on a two-way serial communication protocol. Background technique [0002] At present, each manufacturer implements the problem of information transmission between components of the fire alarm system mainly through binary coding. Specifically, it judges 0 and 1 information by distinguishing high and low levels through circuits, and uses different codes for 0 and 1 bits. convey different information. Although the above-mentioned traditional methods can solve the problem of information transmission, there are problems such as 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 quickly and reliably respond to the fire alarm system. Otherwise, if the fire alarm or co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/14G08B25/01G08B25/08
Inventor 李泰斯郭薇
Owner XIAN SYST SENSOR ELECTRONICS
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