CN214955239U - Chemical industry area perimeter alarm system - Google Patents

Abstract

A chemical area perimeter alarm system relates to the technical field of safety monitoring and is used for safety monitoring of chemical plant area perimeter. The system comprises a detection module, a processing and storage module, an information display module, a video monitoring module and the processing and storage module, wherein the processing and storage module is used for analyzing signals transmitted back by the vibrating optical fiber and realizing a linkage function. The utility model discloses use unique binary channels redundancy monitoring technique, can be once cut off the back at fiber cable, continue to guarantee the monitoring of full line, even not restoreing immediately, still can keep monitoring area's validity. Meanwhile, a non-closed monitoring technology is adopted, the tail ends of two optical fiber channels of the detection host do not need to be connected back, once fiber breakage occurs in a monitoring area, the second channel is immediately opened by a software system, the two channels work simultaneously, and each channel is responsible for monitoring the effective detection optical cable on one side of the breakpoint, so that the integrity of the monitoring area is maintained.

Description

Chemical industry area perimeter alarm system

Technical Field

The utility model relates to safety monitoring technical field for the safety monitoring of chemical plant area perimeter.

Background

The safety monitoring of the chemical plant area is an important component of safety production, and because the chemical plant area has a large range and a plurality of monitoring points and is influenced by regional positions and environmental factors, the setting, namely the effect, of a monitoring system is not particularly ideal. The prior chemical plant area generally uses the traditional plant area enclosure perimeter alarm system form which mainly uses detectors such as an active infrared intrusion detector, a vibrating cable intrusion detector and the like on the enclosure wall, but the technical scheme has the following defects in practical application:

1) false alarm, weather of seaside strong wind, dense fog, rain and snow, etc. affecting alarm accuracy

2) The precision of the defense area is low, and is generally 50-100m

3) Inconvenient installation and maintenance, and need to provide power supply wires and transmission signal wires for the detector

4) The division of the defence areas is not flexible, so that the position of the detector needs to be changed.

5) And after the alarm, the on-site inspection of the person on duty is required.

SUMMERY OF THE UTILITY MODEL

In order to solve the prior art problem, the utility model discloses a technical scheme is:

a chemical area perimeter alarm system comprises a detection module, a monitoring module and a warning module, wherein the detection module is used for sensing and obtaining vibration optical cables and video camera signals arranged on a perimeter enclosure;

the processing and storage module comprises an optical fiber vibration detection system and a comprehensive monitoring platform system, wherein the optical fiber vibration detection system consists of a detection host and a control host, analyzes a signal transmitted back by a vibration optical fiber and transmits an alarm signal to the comprehensive monitoring platform system through a network; the integrated monitoring platform system consists of a system host and matched processing software, and uniformly accesses the information of each subsystem to realize a linkage function;

the information display module comprises a user terminal, is used for displaying the optical fiber vibration detection system and the video system on the monitor in a centralized manner in a GIS graphic form and is linked with the audible and visual alarm;

and the video monitoring module is used for displaying the picture in the video camera area corresponding to the alarm linkage of the optical fiber vibration detector.

Further, the utility model discloses survey the total two passageways of host computer, vibration optic fibre returns around monitoring area a week back, and one of them core of 4 core detection optical cables inserts passageway 1, and another core is followed tail end and is inserted passageway 2 in, forms and uses passageway 1 as the head, and passageway 2 is the closed looped netowrk of tail.

Further, the utility model discloses optic fibre vibration detection system adopts non-closure monitoring technology, and two fibre channel's of detection host computer tail end need not to connect back, in case when taking place disconnected fine in the monitoring area, passageway 2 will be opened at once to the software system, and the binary channels simultaneous working, the monitoring of effective detection optical cable in breakpoint one side is respectively responsible for to every passageway to monitoring area's integrality has been kept.

Furthermore, the vibrating optical fiber of the utility model is laid on the wall body of the perimeter wall and fixed on the flat-laying fence arranged on the wall body; the video cameras are arranged around the perimeter enclosing wall and used for monitoring the condition of the enclosing wall.

The technical effects of the utility model are that:

A. the optical fiber vibration detection system applies unique dual-channel redundancy monitoring technology, can continuously ensure the monitoring of the whole line after the optical fiber cable is cut off once, and can still keep the effectiveness of a monitoring area even if the optical fiber cable is not repaired immediately.

B. The full-range positioning precision of the vibration optical fiber detection system is +/-3 m, compared with the traditional defense area type positioning at 50m-100m, the full-range positioning system can more accurately position the position of intrusion alarm, and can more quickly find intruders under the conditions of night, rainy and snowy days, trees around the enclosing wall and the like, so that the time and the labor are saved, and the safety of a plant area is ensured.

C. Flexible alarm control. The optical fiber perimeter intrusion alarm system can be provided with multi-level sensitivity adjustment and can be corrected according to different environments. The user can also customize the alarm threshold value of each area according to the actual situation.

D. The response time is short. The response time of a single defense area of the fiber grating perimeter intrusion alarm system does not exceed 3 seconds, and the fiber grating perimeter intrusion alarm system is independent of the monitoring length and the monitoring precision.

E. The front end of the optical fiber vibration detection system only needs one vibration detection optical fiber, not only can sense but also can conduct, and does not need other peripheral devices such as an isolator and a binder, so that the optical fiber vibration detection system is simple and convenient to mount and basically free of maintenance.

F. The system is based on the C-OTDR principle, so that defense areas can be freely divided on software, and the front-end detection part does not need to be physically changed, and is flexible and reliable particularly for subsequent system innovation and modification.

G. The vibration optical fiber system adopts a software linkage mode to realize the linkage function with the existing video.

Drawings

Fig. 1 is a block diagram of the present invention.

Fig. 2 is a schematic view of the dual-channel structure of the present invention.

Fig. 3 and 4 are schematic diagrams of the dual-channel operation after fiber breakage of the present invention.

Fig. 5 is a schematic view of the system linkage structure of the present invention.

Detailed Description

The technical solution of the present invention will be further explained with reference to the accompanying drawings.

As can be seen from the attached figure 1, the utility model discloses chemical industry district perimeter alarm system is including surveying module, transmission module, processing and storage module, information display module, video monitoring module.

The detection module comprises a detection optical cable and a camera, wherein the detection optical cable is installed on the perimeter wall of the chemical industry area and senses climbing, damage, invasion and other behaviors of the wall at all times. Considering the influence of special monitoring positions, such as seaside strong wind weather, on the system, the false alarm rate is reduced, the vibration sensitivity is increased, a tiled fence (mesh sheet) is arranged on the wall body and serves as a carrier, and the detection optical cable is laid on the tiled fence (mesh sheet) and is directly bound and fixed. The video cameras are arranged around the perimeter enclosing wall and used for monitoring the invasion condition of the enclosing wall.

The processing and storage module comprises an optical fiber vibration detection system and a comprehensive monitoring platform system, wherein the optical fiber vibration detection system consists of a detection host and a control host, analyzes a signal transmitted back by a vibration optical fiber and transmits an alarm signal to the comprehensive monitoring platform system through a network; the integrated monitoring platform system consists of a system host and matched processing software, and uniformly accesses the information of each subsystem to realize a linkage function.

And the information display module comprises a user terminal and is used for displaying the optical fiber vibration detection system and the video system on the monitor in a centralized manner in a GIS graphic form and linking with the audible and visual alarm.

And the video monitoring module is used for displaying the picture in the video camera area corresponding to the alarm linkage of the optical fiber vibration detector. The personnel on duty can alarm and link the corresponding video camera through the optical fiber vibration detector, and the picture in the area can be directly popped up through the monitor in the on duty room, so that the security personnel can check.

The utility model discloses optical fiber vibration detection system only needs an optical cable both to survey and transmits, and the detection optical cable adopts vibrating optical fiber, adopts 4 core armor fiber cable, even accomplish the intruder like this and cut short optic fibre and can accurately report to the police equally. The detection module transmits the vibration optical fiber and the camera signal obtained by sensing through the transmission module. The system is based on the principle of C-OTDR (optical time domain reflectometry), when optical pulse is transmitted in the optical fiber, the time from signal transmission to signal return is determined, then the speed of light in the optical fiber substance is determined, the distance can be calculated, and the position of fiber breakage is determined. Based on the principle, the defense area can be freely divided on software, the front-end detection part does not need to be physically changed, and the method is flexible and reliable especially for subsequent system innovation and transformation.

The utility model discloses in, optic fibre vibration detection system adopts the redundant monitoring technique of binary channels, can be once cut at fiber cable, continues the monitoring of guaranteeing the full line, even not restoreing immediately, still can keep monitoring area's validity. Referring to the attached drawing 2, the main detection unit has two channels, the optical cable is led out from the integrated equipment where the equipment is located, and returns after going around the monitoring area for one circle, one core of the 4-core optical detection cable is connected into the channel 1, and the other core is connected into the channel 2 from the tail end, so that a closed ring network with the channel 1 as the head and the channel 2 as the tail is formed. The channel 2 is used as redundancy protection, and does not receive vibration signals in the monitoring area when the host works normally. The channel 1 is responsible for the reception of the vibration signal. The other two of the four cores serve as spare optical fibers.

The utility model discloses well optical fiber vibration detection system adopts non-closure monitoring technology, and two fibre channel's tail end need not to connect back the monitoring host computer promptly and can accomplish the monitoring. Once fiber breakage occurs in the monitoring area, as shown in fig. 3 and 4, the channel 2 is opened by the software system at once, the two channels work simultaneously, and each channel is responsible for monitoring the optical cable effectively on one side of the breakpoint, so that the closure of the monitoring area is maintained, the defense areas on the two sides are not affected, and the integrity of the system is ensured. When the optical fiber cable at a certain point is cut off, no optical signal is incident or scattered behind the fiber cutting point, but the front of the fiber cutting point is not affected, and vibration detection can be continued. The dashed lines in the figure indicate no optical signal transmission.

The utility model discloses an optic fibre vibration detection system full-scale range positioning accuracy all is 3m, compares at 50m-100m with traditional defence area formula location, and the position of invasion warning is arrived in location that can be more accurate, has under the circumstances such as trees on evening, sleet day and enclosure, can be faster find the invader, saves time and manpower, guarantees the safety of factory.

The utility model discloses optic fibre vibration detection system adopts the software linkage mode to realize with the linkage function of current video. Referring to the attached figure 5, the front end of the optical fiber vibration detection system is used for sensing the conditions of ambient pressure, vibration and the like in real time by laying detection optical cables on the surrounding walls of a monitoring area, and alarming illegal personnel intrusion by an audible and visual alarm connected with the detection optical cables. After an alarm signal is sent out, the system is linked with a security monitoring system through a network, an alarm position and the nearest camera information are displayed on a system software map interface of an optical fiber vibration detection intrusion alarm system management terminal, alarm flicker is realized between the alarm position and the nearest camera information, and meanwhile alarm information is sent to a video monitoring module. And after receiving the alarm information, the security monitoring system switches the display surface to the monitoring picture of the target camera for the security personnel to check the on-site picture and further confirm the on-site actual invasion condition.

The utility model discloses well perimeter security protection system software is independent of video monitoring system software relatively, binds through warning point and camera (presetting bit), and the ethernet access mode is browsed, is sent cloud platform and video matrix control command to video monitoring system platform or NVR request video.

The utility model discloses a vibration fiber optic cable has passive construction convenience, safe and reliable as the detector, and sensitivity is adjusted, accurate location, characteristics such as non-maintaining basically. The mode that the vibration optical fiber alarm is linked with the video monitoring to pop up the corresponding area picture is adopted, so that security personnel can see the condition of the intruder at the first time, and the time is saved for next security.

Claims (4)

1. A chemical industry area perimeter alarm system is characterized in that: the system comprises a detection module, a detection module and a control module, wherein the detection module is used for perceiving and obtaining the vibration optical cable and video camera signals arranged on a perimeter wall;

the processing and storage module comprises an optical fiber vibration detection system and a comprehensive monitoring platform system, wherein the optical fiber vibration detection system consists of a detection host and a control host, analyzes a signal transmitted back by a vibration optical fiber and transmits an alarm signal to the comprehensive monitoring platform system through a network; the comprehensive monitoring platform system consists of a system host and matched processing software;

the information display module comprises a user terminal, is used for displaying the optical fiber vibration detection system and the video system on the monitor in a centralized manner in a GIS graphic form and is linked with the audible and visual alarm;

and the video monitoring module is used for displaying the picture in the video camera area corresponding to the alarm linkage of the optical fiber vibration detector.

2. The chemical area perimeter alarm system of claim 1, wherein: the detection host machine is provided with two channels in total, the vibration optical fiber returns after surrounding the monitoring area for a circle, one core of the four-core detection optical cable is connected into the channel 1, the other core is connected into the channel 2 from the tail end, and a closed ring network taking the channel 1 as the head and the channel 2 as the tail is formed.

3. The chemical area perimeter alarm system of claim 1, wherein: the optical fiber vibration detection system is a non-closed monitoring system, the tail ends of the two optical fiber channels of the detection host are not connected back, once the fiber is broken in a monitoring area, the channel 2 is opened by a software system at once, the two channels work simultaneously, and each channel is responsible for monitoring the effective detection optical cable on one side of the break point, so that the integrity of the monitoring area is maintained.

4. The chemical area perimeter alarm system of claim 1, wherein: the vibration optical fiber is laid on the wall body of the perimeter enclosing wall and is fixed on the flat-laid fence arranged on the wall body; the video cameras are arranged around the perimeter enclosing wall and used for monitoring the condition of the enclosing wall.

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