CN102830663A - Environment monitoring device based on video debugging - Google Patents

Abstract

The invention relates to an environment monitoring device based on video debugging, which comprises an environment monitoring device body formed by two stages; a first stage of management control station takes charge of monitoring change of working parameter of each pollutant in a key monitoring factory, work state of important equipment and operation management; a second stage of field control station field I/O station respectively takes charge of controlling and monitoring of pollution point equipment, collecting a pollution detection parameter and an operation condition signal of the equipment, and transmitting the pollution detection parameter and the operation condition signal of the equipment to a superior control unit in a wired or wireless way. The environment monitoring device is characterized in that remote field debugging and remote maintenance of a ladder diagram is achieved by combining a 3G image with soft plc. According to the invention, the 3G network is adopted to remotely transmit the signal effectively, and the problem of an incomplete data packet in the communication process of the 3G network is successfully solved by an encryption technology. The problems of field monitoring data and free expansion of input and output (DI, DO, AI and AO) are successfully solved by a modularization design, and a good scheme can be provided for field monitoring.

Description

Environmental monitoring installation based on the video debugging

Technical field

The present invention is along with rapid economic development, and the raising of people's pay attention to day by day living environment, environmental monitoring become us and reasonably utilize environmental resource, the important process of preserving the ecological environment.Situation is because pollution source distribute scattered now; Restive management; To pollution condition can't grasp in real time cause supervising not in place; Environmental security hidden danger such as can't in time find at characteristics, can effectively implement for guaranteeing the target responsibility, must set up a cover to disperseing to pollute the long distance control system device that emphasis carries out the real-time monitoring and the centralized management of sound, video.

Background technology

Present wireless remote system is general, and to adopt wireless frequency of operation be 433.92MHz, and this frequency range of receiving is little, and between the general 100-300m, but in fact environmental monitoring sites can be dispersed in each corner in city.The control point is generally all at a distance of several kilometers or tens of kilometer.Native system adopts the 3G network form, utilizes characteristics such as mobile communication and UNICOM's scope are wide, high-level efficiency to carry out teletransmission.The part system also adopts the 3G network form to carry out teletransmission, but because in wireless transmission uncontinuity, server end can not be resolved incomplete data and transmitted bag, particularly a large amount of especially packet losses when the transmission picture.In addition, other system all can not solve on-site supervision data and control input and output (DI, DO, AI, AO) free expansion, so requirement that far can not the environmental monitoring field control not have realization monitoring truly.

Summary of the invention

Native system system adopts decentralised control, centralized monitoring system, and this system has the characteristics of convenient management, and systems technology is ripe, has become the leading control system of automatic control system at present.Control system all is sent to central control room to data through network.

The control system of engineering is made up of two-stage:

The first order--------management control station

Be responsible for the variation of each pollutant worker parameter in the monitoring key monitoring factory, visual plant duty and operational management.

The second level--------field control station

On-the-spot I/O station is responsible for the control and the monitoring of points of contamination equipment respectively, carries out the collection of pollution detection parameter, equipment operation working condition signal and transmits in real time with wired or wireless form to higher level's control module.

The structure of field control station: see accompanying drawing 1

The formation of native system is:

1) adopted the telesecurity transport module of 3G network, can realize downloading on-line debugging etc. on the teleprogram to PLC.See field condition through the 3G real-time video, the trouble spot of field apparatus is confirmed in the real-time video inline diagnosis that reaches the PLC program, reaches the purpose of troubleshooting.

2) adopted 3G network effectively to carry out teletransmission, the situation of incomplete packet in the 3G network communication process of having utilized the successful solution of encryption technology.

3) utilize modular data and the free expansion of input and output (DI, DO, AI, AO) that designs successful solution on-site supervision; Can good scheme be provided for on-site supervision.

Field control station block diagram: see accompanying drawing 2

Description of drawings

Fig. 1 is system framework figure; Fig. 2 is environmental monitoring field apparatus figure

Embodiment:

1, gather flowmeter instrument module (EK), gather flowmeter instrument module modules such as (CORUS), module constitute a Can interface, two RS485 interfaces, MCU, optical coupling isolation circuit, ROM, power supplys are formed.

2, the circuit modules such as a Can interface, 3G external member, Transistor-Transistor Logic level interface, ARM nuclear MCU, self-test interface that constitute of 3G module are formed.

3, during the 3G wireless transmission; The 3G module is carried out AES, and the specialized protocol of protocol conversion a kind of non-public key mode of syllabus target accurately and headed by the security has adopted RSA Algorithm; Key is 128 bit encryption unsymmetrical key, and the mode that PKI and private key are used in combination is encrypted.The authenticity and integrity of industrial data wide area network transmission has been guaranteed in the application of cryptographic protocol.

4, small-sized plc is based on a soft plc of Cortex 32 chips, changes the input and output point that module can be expanded 40 points.Formation is by the input and output of isolating (DI, DO, AI, AO), the mcu of mcs51 etc.

5, the debugging of ladder diagram remote scene and the remote maintenance that combine 3G video image and soft plc to realize.

Claims (5)

1. environmental monitoring installation based on video debugging comprises that environmental monitoring installation is made up of two-stage:

The first order--------management control station

Be responsible for the variation of each pollutant worker parameter in the monitoring key monitoring factory, visual plant duty and operational management.

The second level--------field control station

On-the-spot I/O station is responsible for the control and the monitoring of points of contamination equipment respectively, carries out the collection of pollution detection parameter, equipment operation working condition signal and transmits in real time with wired or wireless form to higher level's control module.

It is characterized in that: the debugging of ladder diagram remote scene and the remote maintenance that combine 3G video image and soft plc to realize.

2. environmental monitoring installation according to claim 1; It is characterized in that during the 3G wireless transmission, the 3G module is carried out AES; The specialized protocol of protocol conversion a kind of non-public key mode of syllabus target accurately and headed by the security; Adopted RSA Algorithm, key is 128 bit encryption unsymmetrical key, and the mode that PKI and private key are used in combination is encrypted.The authenticity and integrity of industrial data wide area network transmission has been guaranteed in the application of cryptographic protocol.

3. the device of efficient absorption recycling organic exhaust gas according to claim 1 is characterized in that, the circuit modules such as a Can interface, 3G external member, Transistor-Transistor Logic level interface, ARM nuclear MCU, self-test interface that constitute of 3G module are formed.

4. the device of efficient absorption recycling organic exhaust gas according to claim 3 is characterized in that said small-sized plc is based on a soft plc of Cortex 32 chips, changes the input and output point that module can be expanded 40 points.Formation is by the input and output of isolating (DI, DO, AI, AO), the mcu of mcs51 etc.

5. the method for environmental system monitoring according to claim 1, its characteristic may further comprise the steps:

1) adopted the telesecurity transport module of 3G network, can realize downloading on-line debugging etc. on the teleprogram to PLC.See field condition through the 3G real-time video, the trouble spot of field apparatus is confirmed in the real-time video inline diagnosis that reaches the PLC program, reaches the purpose of troubleshooting.

2) adopted 3G network effectively to carry out teletransmission, the situation of incomplete packet in the 3G network communication process of having utilized the successful solution of encryption technology.

3) utilize modular data and the free expansion of input and output (DI, DO, AI, AO) that designs successful solution on-site supervision; Can good scheme be provided for on-site supervision.

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