Novel sensor access bus protocol

A bus protocol and sensor technology, applied in the field of sensor access bus protocol, can solve problems such as unfavorable fire rescue, slow fire alarm speed, etc., and achieve the effects of accurate fire alarm application information, cost saving, and prevention of false alarms

Active Publication Date: 2013-05-01
深圳市高新投三江电子股份有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] In the fire alarm system using intelligent two-bus technology, because the passive inspection mode is adopted, the more

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment 1

[0026] In this embodiment, on the basis of the normal inspection process, the fire inspection process in the new sensor access bus protocol of this application is described in detail, please refer to the accompanying drawings in the specification Figure 8 , image 3 , Figure 4 , Figure 5 and Image 6 .

[0027] In the fire alarm system, the alarm controller performs normal inspections on the coded terminal equipment connected to the bus through the bus. The normal inspection process is as follows:

[0028] There are 324 coded terminal devices connected in the bus loop. Therefore, the 324 coded terminal devices including fire detectors, manual alarm buttons, sound and light alarms, fire hydrants and modules are divided into one for every 18 according to their address numbers. The group is divided into 18 groups, which is exactly equal to the 18-bit code position of the alarm controller. Therefore, the group number of the 18-group fire detector application can correspond to the cod...

Embodiment 2

[0050] In this embodiment, a fault inspection process is added on the basis of the bus protocol described in the first embodiment. The following describes the fault inspection process in a new type of sensor access bus protocol in this application in detail, please refer to the accompanying drawings in the specification Figure 7 , The fault inspection process and the normal inspection process are carried out at the same time.

[0051] Send fault inspection command: During the normal inspection process, the alarm controller sends a fault inspection command to the coding terminal device;

[0052] Return response signal: Among the coded terminal devices that have received the fault inspection command, the coded terminal device that has not failed to return a response signal to the alarm controller, and the coded terminal device that has a fault cannot send back a response signal;

[0053] Confirm registration: confirm whether the encoding terminal device that cannot send back the respon...

Embodiment 3

[0062] Using a new type of sensor access bus protocol in the first and second embodiments above, this example forms a fire alarm system to implement the fire alarm process in the fire alarm system, that is: according to the first and implementation above In the second example of a new sensor access bus protocol, the alarm controller performs normal inspection process, fire inspection process and fault inspection process on the coding terminal equipment connected to the bus through the bus.

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Abstract

The invention discloses a novel sensor access bus protocol. In the process of normal inspection, a fire alarm application is sent to an alarm controller by encoding terminal equipment with a fire alarm through a bus; after the application is received by the alarm controller, a fire alarm inspection command is immediately sent to the encoding terminal equipment, and the process of normal inspection is interrupted at the same time; after the fire alarm inspection command is received, an address of the encoding terminal equipment is sent back by the encoding terminal equipment in a fire alarm state through the bus; a normal inspection command is sent to the encoding terminal equipment by the alarm controller in accordance with the received address, so as to confirm whether the encoding terminal equipment is really in the fire alarm state or not; if the encoding terminal equipment is really in the fire alarm state, a fire alarm confirming command is sent to the encoding terminal equipment; and if a response signal of the encoding terminal equipment is in a fire alarm confirming state, the encoding terminal equipment is finally confirmed to be in the fire alarm state. According to the technical scheme, the traditional passive inspection is overcome, an alarm point can be accurately and reliably positioned, a false alarm caused by factors such as environment is avoided, and stability and reliability of bus protocol communication are guaranteed.

Description

technical field [0001] This application relates to the field of fire alarm, in particular to a novel sensor access bus protocol. Background technique [0002] The research on the data transmission mode between the fire alarm controller and the fire alarm detector has a very important position in the whole fire alarm system, and has always been the key research object in this field, because it plays an important role in improving system performance and reducing system cost. plays a very important role. [0003] In general, in the second bus loop of the fire alarm system, it is hoped that the number of fire detectors and modules that can be carried is as large as possible. When a large number of fire detectors and modules are carried in the bus loop, the bus loop is still It must be able to quickly respond to the alarm request of each detector and module equipment, and report the fault within the time range required by the national standard GB16806-2005. At this time, the abo...

Claims

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Application Information

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IPC IPC(8): G08B17/00
Inventor 曹子江黄令刚刘福华陈介均
Owner 深圳市高新投三江电子股份有限公司
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