CN202632078U - SCADA (supervisory control and data acquisition) system and security system integrated control system - Google Patents

Abstract

The utility model relates to a control system integrated with a SCADA system and a security system, comprising a monitoring server, a PLC controller, an on-site self-control instrument and a security subsystem, the monitoring server is connected to the PLC controller through a control network, and the PLC The controller is respectively connected to the field automatic control instrument and the security subsystem. Compared with the prior art, the utility model has the advantages of improving the reliability of the security alarm, strengthening the alarm warning and the like.

Description

A control system integrating SCADA system and security system

technical field

The utility model relates to a control system, in particular to a control system integrated with a SCADA system and a security system.

Background technique

It is a common structure to include both a SCADA system (SCADA, Supervisory Control and DataAcquisition) and a security system in a system. However, traditionally, these two systems are separated from each other. This situation brings two defects:

(1) SCADA system and security system cannot be linked;

(2) The operator needs to pay attention to the information displayed by the SCADA system and the security system separately at the same time, which brings inconvenience to the centralized management of the operator.

Contents of the invention

The purpose of this utility model is to provide a control system integrating the SCADA system and the security system which can improve the reliability of the security alarm and strengthen the alarm warning in order to overcome the above-mentioned defects in the prior art.

The purpose of this utility model can be achieved through the following technical solutions:

A control system integrated with a SCADA system and a security system, comprising a monitoring server, a PLC controller, on-site self-control instruments and a security subsystem, the monitoring server is connected to the PLC controller through a control network, and the PLC controllers are respectively connected to On-site self-control instruments and security subsystems.

The security subsystem includes a perimeter alarm, an access control signal acquisition unit, a patrol signal acquisition unit, a video monitor, a fire alarm and a toxic gas detector. The perimeter alarm, an access control signal acquisition unit, a patrol Both the signal acquisition unit and the toxic gas detector are connected to the PLC controller through cables, and the video monitor and fire alarm are connected to the PLC controller through an industrial network.

Described PLC controller comprises DI (Digital Input, digital input) module port and AI (AnalogInput, analog input) module port, and described DI module port connects perimeter alarm, access control signal acquisition unit and poisonous gas detector respectively , the ports of the AI module are respectively connected to the patrol signal acquisition unit and the toxic gas detector.

The PLC controller is connected with a network switch, and the network switch is connected with a communication gateway through the Ethernet, and the communication gateway is respectively connected with the video monitor and the fire alarm through the industrial network.

Compared with the prior art, the utility model has the following advantages:

(1) Improve the reliability of security alarms: The reliable sending out of an alarm model requires the normal operation of several links, and one is indispensable. For example, if the alarm sounder or its power supply fails, even if the alarm signal is sent out, the sound cannot be sent out. Call the police. If it is connected to the SCADA system, even if the acoustic device fails, the SCADA system monitoring server can also send an alarm.

(2) Provide graphical interface alarm: Since the security system does not have a display platform, the alarm of the security system is limited to the sound alarm, and there is no graphical interface alarm, and the alarm form is single. If it is connected to the SCADA system, the security alarm can provide a graphical interface alarm form through the SCADA system monitoring server.

(3) Strengthen the alarm warning: Under normal circumstances, the operator on duty pays attention to the process operation of the station and valve room. If the security alarm sound is slightly lower at this time, it may be ignored. If the alarm is reported directly on the monitoring server, it will immediately arouse the vigilance of the operator on duty.

(4) Provide an interface for future security alarm events and safety interlock control of the station.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model control system.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

Example 1

As shown in Figure 1, a control system integrated with a SCADA system and a security system includes a monitoring server 1, a PLC controller 2, an on-site automatic control instrument 4 and a security subsystem 3, and the monitoring server 1 is controlled by a control network and a PLC The PLC controller 2 is connected to the field automatic control instrument 4 and the security subsystem 3 respectively.

Security subsystem 3 comprises perimeter alarm 31, access control signal acquisition unit 32, patrol signal acquisition unit 33, video monitor 34, fire alarm 35 and toxic gas detector 36, described perimeter alarm 31, access control Signal acquisition unit 32, patrol signal acquisition unit 33 and toxic gas detector 36 are all connected to PLC controller 2 through cables, and described video monitor 34 and fire alarm 35 are all connected to PLC controller 2 through industrial network. The PLC controller 2 includes a DI module port and an AI module port. The PLC controller 2 is connected with a network switch 5, and the network switch 5 is connected with a communication gateway 6 through an Ethernet, and the communication gateway 6 is respectively connected with a video monitor 34 and a fire alarm 35 through an industrial network.

The specific connection relationship between the security subsystem 3 and the PLC controller 2 is as follows:

(1) Perimeter alarm 31: when detecting unknown persons and objects intruding into the warning line, an alarm signal is sent, which is a switch signal, so the perimeter alarm 31 is connected with the DI module port of the PLC controller;

(2) access control signal acquisition unit 32: when the guard area gate was opened, an alarm signal was sent, and this signal was also a switch signal, so the access control signal acquisition unit 32 was connected with the DI module port of the PLC controller;

(3) Patrol signal acquisition unit 33: when the security patrol personnel patrol to this point, input the number information of the patrol personnel with the patrol card, this signal is an analog signal, usually the numbering of the patrol personnel, the patrol signal The acquisition unit 33 is connected to the PLC controller through the AI module port;

(4) video monitor 34: the signal that video monitor 34 sends is image signal, and PLC controller can not receive image signal, and image signal can be uploaded to PLC controller by gateway and network exchange, and by video display software, in monitoring server The live scene is displayed on the screen;

(5) Fire alarm 35: usually a fire alarm is a self-contained closed-loop system, and uses communication to transmit data. Therefore, the monitoring and alarm information of the fire alarm can be controlled by a PLC through a communication gateway and a network switch. uploaded to the monitoring server;

(6) Toxic gas alarm 36: the toxic gas leakage alarm sent by the toxic gas alarm is divided into two types: one is a single alarm signal, that is, it exceeds the alarm warning line and reports upward. The DI module port can access this signal. The other is the concentration signal, that is, to report the concentration of toxic gas. At the same time, when the concentration is exceeded, an alarm is issued. This signal is an analog signal, usually the number of the patrol personnel, which can be received through the AI module port of the PLC controller. Signal.

If the equipment in the security subsystem has an RJ45 network interface and supports network connection, the RJ45 port of the equipment can also be connected to a network switch, and the connection with the PLC controller can be realized through the network switch.

The workflow of the control system integrated with the above-mentioned SCADA system and the security system mainly includes the following steps:

1) The on-site automatic control instrument 4 transmits the signal of the automatic control system to the PLC controller 2 through the cable, and at the same time, the security subsystem 3 transmits various security signals (such as perimeter alarm signals, access control signals, patrol signals, and video surveillance signals) through cables or industrial networks. , fire alarm signal and toxic gas leakage alarm signal) are transmitted to the PLC controller 2;

2) The PLC controller 2 performs interlocking integrated control on the received signal, and transmits the control result to the monitoring server 1 through the control network;

3) The monitoring server 1 issues an alarm and displays the video monitoring result.

The signal of the security subsystem 3 enters the monitoring server 1 through the PLC controller 2, and can rely on the platform to display rich processing functions. Such as: the interlocking of the fire protection system and the production process, once a fire alarm occurs, the automatic control system immediately stops the operation of the entire production system; the connection between the perimeter alarm, video monitoring and the PLC controller, when the perimeter alarm sends out an alarm signal at night, the PLC The controller automatically turns on the searchlight, and at the same time controls the searchlight and the video surveillance camera to turn to the direction of the tag number of the perimeter alarm shooting device, and monitors the alarm point...etc.

After the signal of the security subsystem 3 enters the PLC controller 2, statistical processing can be performed on the operating status of the security subsystem, such as recall of security alarm events, statistics and recall of patrol operations, analysis of toxic gas concentration trend graphs, etc.

Example 2

Referring to Fig. 1, the control system integrated with the SCADA system of the present invention and the security system is applied to the automatic monitoring process of the natural gas pipeline project in Jiaxing City:

Jiaxing natural gas pipeline network SCADA system project involves 1 dispatching center, 7 station control systems, 7 distribution valve rooms, and 3 shut-off valve rooms. The project content includes: equipment selection, system function design, system interface and communication protocol, network structure and planning, system expansion capability, control authority design, system platform construction, database and WEB server establishment, etc.

Dispatching center: 1, Nanjiao station dispatching center.

Station control systems: 7, Nanjiao Station, Gas Connection Station, Wutong Station, Jiashan Station, Daqiao Station, Haiyan Station, Pinghu Station.

Distribution valve chambers: 7, Jiaxing, Zhongguan, Xin'an, Xinshi, Zhouquan, Jiaxing South, Xinfeng.

Cut-off valve chambers: 3, Ling'an Port, Yongxin Port, Zhengjia Jiehe.

System design emphasizes advanced nature, applicability and stability, system platform consistency, and adopts open and distributed structure. Strive for advanced design ideas, mature, stable, and cost-effective software and communication solutions, so that the system has strong scalability and vitality.

The system undertakes operation functions such as collection, conversion, display, and alarm of the working condition data of each station, remotely transmits the working condition data of the station to the monitoring server and database of the dispatching center, receives and executes local and remote control commands, and returns the execution results. At the same time, the station control system is linked with the security system. When station intrusion events and other security anomalies are found, the PLC immediately sends an alarm to the monitoring server of the dispatch center to prompt the on-duty personnel to deal with it.

Network with the local security system to realize the chain control of the control system and the security system:

(1) The monitoring system should have the following functions:

a. Programming and alarm switching function;

b. Real-time/timing/motion detection recording function;

c. Video images should have subtitles, numbers, and time display functions;

d. With the linkage function of the anti-theft and perimeter alarm system, the scene of the alarm can be switched to the main monitor in real time, and the video recorder can be started to record automatically at the same time;

e. The monitoring system software should have graphical display and operation functions, and must be a Chinese platform;

(2) The anti-theft alarm system shall have the following functions:

a. When there is an illegal intrusion, the detector should immediately report to the security management center, and the control center should receive and display the alarm information by the computer;

b. The system should have the function of linkage video recording, and ensure that the linkage is in place within a short time after the alarm occurs;

c. The detector itself must have anti-sabotage function;

d. The location of the detector should be determined after careful analysis to avoid dead corners in the defense zone;

e. Under the premise of ensuring high-sensitivity alarm, the detector should have sufficient means to prevent false alarms caused by various factors.

Example 3

Referring to Figure 1, the control system integrating the SCADA system and the security system of the present invention is applied to the automatic monitoring process of Jiashan Natural Gas Phase I Utilization Project:

The SCADA system of Jiashan Natural Gas Phase I Utilization Project includes stations including: Dispatching Center, Jiashanmen Station, T2 Pressure Regulating Station, Baishuitang Valve Room, etc. The structure and function are the same as those in Embodiment 2.

Claims (4)

1. SCADA system and the integrated control system of safety-protection system; It is characterized in that; Comprise monitoring server, PLC controller, on-the-spot automatic instrument(s) and security protection subsystem; Described monitoring server is connected with the PLC controller through Control Network, and described PLC controller connects on-the-spot automatic instrument(s) and security protection subsystem respectively.

2. a kind of SCADA system according to claim 1 and the integrated control system of safety-protection system; It is characterized in that; Described security protection subsystem comprises boundary alarm, gate inhibition's signal gathering unit, night watching signal gathering unit, video monitor, fire protection warning device and poisonous gas detection device; Described boundary alarm, gate inhibition's signal gathering unit, night watching signal gathering unit and poisonous gas detection device all are connected with the PLC controller through cable, and described video monitor all is connected with the PLC controller through industrial with the fire protection warning device.

3. a kind of SCADA system according to claim 2 and the integrated control system of safety-protection system; It is characterized in that; Described PLC controller comprises DI module port and AI module port; Described DI module port connects boundary alarm, gate inhibition's signal gathering unit and poisonous gas detection device respectively, and described AI module port connects night watching signal gathering unit and poisonous gas detection device respectively.

4. a kind of SCADA system according to claim 2 and the integrated control system of safety-protection system; It is characterized in that; Be connected with the network switch on the described PLC controller; The described network switch is connected with communication gate through Ethernet, and described communication gate connects video monitor and fire protection warning device respectively through industrial.

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