CN1569657A - Management system for remotely monitoring purified water and its implementing method - Google Patents
Management system for remotely monitoring purified water and its implementing method Download PDFInfo
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- CN1569657A CN1569657A CN 200410037232 CN200410037232A CN1569657A CN 1569657 A CN1569657 A CN 1569657A CN 200410037232 CN200410037232 CN 200410037232 CN 200410037232 A CN200410037232 A CN 200410037232A CN 1569657 A CN1569657 A CN 1569657A
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Abstract
The invention provides a management system for remotely monitoring purified water and its implementing method, wherein the system comprises a plurality of water purification stations and a monitoring center for managing each water purification stations, each of the said water purification station includes a raw water treatment subsystem, a water supply subsystem and a water purification control subsystem connecting the raw water treatment system subsystem and the water supply subsystem, each water purification control subsystem is in communication conneciton with the monitoring center through the public land mobile communication network PLMN, which includes GPRS network.
Description
Technical Field
The invention relates to a water purification system, in particular to a water purification remote monitoring management system and an implementation method.
Background
With the development of industry, water pollution is gradually increased, so that the water quality of tap water is affected, and due to the aging of a tap water supply pipe network, a lot of people select barreled mineral water and purified water as drinking water, so that troubles such as ordering, delivering and changing water are also caused.
In order to solve the above-mentioned troubles and improve the quality of life of people, the quality of raw water needs to be treated, which is called as purified water. The water purification system is a whole formed by combining facilities such as water quality treatment of raw water, water distribution and the like in a certain mode. The system comprises a pipeline direct drinking water system, a reclaimed water system and a tap water system. The following takes a pipeline direct drinking water system as an example to illustrate the defects of the existing water purification system.
The pipeline direct drinking water is high-quality healthy water which is taken as a water source and can be directly drunk by human beings after deep treatment. Direct drinking water workstations are arranged in residential districts, schools, office buildings and the like, and comprise a raw water treatment subsystem, a water supply subsystem and a direct drinking water control subsystem. Wherein:
the raw water treatment subsystem comprises a purification device, a filter and a disinfection device and is used for converting raw water into high-quality water which can be directly drunk by human beings after the raw water is subjected to purification, filtration, disinfection and other process flows, and the high-quality water is conveyed to thousands of households through a pipe network in a variable-frequency water supply mode through the water supply subsystem, so that the users can directly drink the high-quality healthy water by opening a faucet.
The direct drinking water control subsystem is used for monitoring the running conditions of all devices of the raw water treatment subsystem in real time. The direct drinking water control subsystem mainly comprises a PLC (programmable logic controller), a data acquisition unit and an intelligent instrument. The PLC is used for carrying out centralized control on the raw water treatment process flow, controlling important parameters such as liquid level, temperature, pressure, flow and the like of the data acquisition device, controlling the work of the whole raw water subsystem and the water production subsystem according to the parameters, taking alarm measures if necessary and receiving external instructions to control the work of each device. And the intelligent instrument is connected with the PLC and used for detecting and controlling numerous non-electric quantity signals.
With the popularization of direct drinking water in pipelines, direct drinking water workstations are rapidly increasing. If still adopt each straight drink water workstation configuration professional to monitor straight drink water control subsystem, then the cost of labor of operation is very high, because configuration personnel's professional level is different moreover, whether can in time handle when equipment breaks down, then the loss size that the direct impact equipment trouble caused. Consequently, because the dispersion of straight drinking water workstation is independent to lead to the problem that the cost is high and the effect is not good of system operation maintenance, prior art discloses a pipeline straight drinking water system that can carry out remote monitoring management. Referring to fig. 1, the system includes each direct drinking water workstation 1 and a monitoring center 2 for monitoring and managing the working condition of each direct drinking water workstation. Each direct drinking water workstation 1 comprises a raw water treatment subsystem 3, a water supply subsystem 5 and a direct drinking water control subsystem 4. The monitoring center 2 includes a plurality of monitoring computers and servers. The monitoring computer receives the running state of each device in the raw water treatment subsystem 3 sent by the direct drinking water control subsystem 4, and the monitoring center provides a friendly human-computer interface and monitors the work of the whole system in real time. Above-mentioned pipeline direct drinking water system makes special personnel need not each workstation and just can each direct drinking water control subsystem 4's of real time monitoring condition, but, what kind of communication mode of adoption makes and carries out data communication between each direct drinking water workstation 1 and the surveillance center 2, then the operational aspect of direct influence entire system.
The first communication mode of adoption is that each straight drinking water control subsystem 3 communicates with the surveillance center 2 through wired connection mode, and this kind of mode only drops into manpower, material resources and financial resources on the cable laying work kind very huge, causes the cost of whole pipeline straight drinking water system very high.
The second communication mode is that each direct drinking water control subsystem 3 communicates with the monitoring center 2 through a wireless trunking communication network, a Mobitex network or a cdpd (cellular Digital Packet data) network. However, the Mobitex network or the CDPD network of the trunking mobile communication network belongs to the private mobile communication network, which requires a large amount of capital investment for construction, has a long construction period and is inconvenient for maintenance, and the coverage of the private mobile communication networks is limited, so that the construction and maintenance costs of the direct drinking water pipe system using the private network are high, and the application range of the direct drinking water monitoring and management system is limited.
In fact, the current water purification system rarely realizes remote monitoring, and generally comprises a plurality of water purification work stations, wherein each water purification work station comprises a raw water treatment subsystem, a water supply subsystem and a water purification control subsystem which is connected with the raw water treatment subsystem and the water supply subsystem. Each water purification workstation is provided with special personnel for management, thereby causing the defects of high operation cost, unfavorable management and narrow application range of the system.
Disclosure of Invention
The invention aims to provide a low-cost and applicable water purification remote monitoring management system and an implementation method.
In order to achieve the above purpose, the present invention provides a water purification remote monitoring management system, which includes a plurality of water purification workstations and a monitoring center for monitoring and managing the work of each water purification workstation, wherein each water purification workstation includes a raw water treatment subsystem, a water supply subsystem and a water purification control subsystem connected to the raw water treatment subsystem and the water supply subsystem, and each water purification control subsystem establishes a communication connection with the monitoring center through a public land mobile network PLMN.
Wherein, the water purification control subsystem is including being used for establishing the water purification control subsystem with the GPRS wireless data transmission terminal of network communication connection.
The monitoring center comprises a GPRS wireless data transmission terminal used for establishing communication connection between the monitoring center and the GRPS network.
The monitoring center establishes communication connection with the GRPS network through a DDN data special line or is connected with the Internet through a gateway machine.
Wherein, water purification system includes pipeline straight drinking water system, well water system and running water system.
The invention also provides a method for realizing the remote monitoring management of the water purification system, wherein the water purification system comprises a plurality of water purification workstations and a monitoring center, each direct drinking water workstation comprises a raw water treatment subsystem, a water supply subsystem and a direct drinking water control subsystem, and the method comprises the following steps: a data uploading step: after the registration of each water purification control subsystem in the monitoring center is successful, the data of the water purification workstation is sent to the monitoring center through a Public Land Mobile Network (PLMN); data downloading step: and the monitoring center sends a remote control command to the water purification control subsystem through a Public Land Mobile Network (PLMN) according to the received data, and controls the equipment of the water purification workstation to work.
Wherein the public land mobile network PLMN comprises GPRS.
Wherein the registering further comprises: the GPRS wireless data transmission terminal arranged in each water purification control subsystem sends out a registration request; and a server of the monitoring center stores the corresponding relation between the IP address of the water purification workstation and the GPRS wireless data transmission terminal.
The GPRS wireless data transmission terminal sends heartbeat or drop test to the monitoring center at regular time, and communication reset is carried out when the wireless connection is abnormal.
Wherein, the data uploading step further comprises: the monitoring center is provided with a polling label and sends a data uploading request to the water purification workstation.
Compared with the prior art, the invention has the following advantages:
(1) compared with the prior art which adopts a private network, the water purification system is constructed by utilizing the existing network resources, so that the construction and maintenance cost for reconstructing the private network is reduced, more importantly, the existing PLMN network is a mature network which is constructed and maintained by operators with a large amount of cardiovascular cost, and the water purification system can utilize the advantages of the networks, such as high data transmission speed, small network transmission time delay, high safety and reliability and wide application range, so that the system achieves the effects of high response speed and wide application range.
(2) The invention carries out data communication between each water purification workstation and the monitoring center through the GPRS network, and utilizes the GPRS technology to realize the advantages of permanent online, high data transmission speed, large transmission capacity, charging according to flow and reduction of wireless resource waste, thereby achieving the purpose that the monitoring center monitors the working condition of each water purification workstation in real time, facilitating the management of the water purification system and leading the monitoring center to safely, stably, reliably and regularly patrol each water purification workstation.
(3) The monitoring center of the invention is connected with the Internet, realizes the real-time display of the site condition of each water purification workstation to the Internet, controls the normal work of each water purification workstation through the Internet, realizes the production site of each water purification workstation without the need of people on duty, and really realizes the comprehensive informatization of site information acquisition and management.
Drawings
Fig. 1 is a schematic diagram of a water purification remote monitoring and management system in the prior art.
Fig. 2 is a schematic diagram of the water purification remote monitoring and management system of the invention.
FIG. 3 is a schematic diagram of a pipeline direct drinking water system for realizing remote monitoring management according to the present invention.
FIG. 4 is a schematic structural diagram of a raw water treatment subsystem according to an embodiment of the present invention.
FIG. 5 is a schematic structural diagram of a direct drinking water pipe system for remote monitoring management according to an embodiment of the present invention.
Fig. 6 is a flow chart for implementing remote monitoring management of the water purification system of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
Fig. 2 is a schematic diagram of a water purification remote monitoring and management system according to the present invention. The system comprises a plurality of water purification workstations 61 and a monitoring center 62 for monitoring and managing the work of each water purification workstation 61, wherein each water purification workstation 61 comprises a raw water treatment subsystem 63, a water supply subsystem 65 and a water purification control subsystem 64 respectively connected with the raw water treatment subsystem 63 and the water supply subsystem 65. Each water purification control subsystem 54 establishes communication connection with the monitoring center 62 through the public land mobile network PLMN to control the normal operation of the equipment of the raw water treatment subsystem 63 and the water supply subsystem 65.
The present invention will be described in detail below by taking a pipe direct drinking water system as an example.
Fig. 3 is a schematic diagram of a pipeline drinking water system for realizing remote monitoring and management according to the present invention. The system comprises a plurality of direct drinking water workstations 1 and a monitoring center 2 for monitoring and managing the work of the direct drinking water workstations 1, wherein each direct drinking water workstation 1 comprises a raw water treatment subsystem 3, a water supply subsystem 5 and a direct drinking water control subsystem 4 respectively connected with the raw water treatment subsystem 3 and the water supply subsystem 5. And each direct drinking water control subsystem 4 establishes communication connection with the monitoring center 2 through a public land mobile network PLMN to control the normal operation of the equipment of the raw water treatment subsystem 3 and the water supply subsystem 5. PLMN networks include GSM networks and 3G networks. The direct drinking water control subsystem 4 is in communication connection with the monitoring center 2 through the PLMN, the existing network resources are utilized, the construction and maintenance cost of a reconstruction private network is reduced, more importantly, the existing PLMN network is a mature network which is built and maintained by operators with a great deal of cost, and the pipeline direct drinking water system can utilize the advantages of the networks, such as fast data transmission, small time delay of network transmission and high safety and reliability.
The embodiment disclosed by the invention adopts a GPRS (general packet Radio service) network to carry out communication connection between each direct drinking water control subsystem 4 and the monitoring center 2. GPRS is a new packet data bearer service developed in the existing GSM system, and compared with the original GSM, GPRS has very obvious advantages in data service bearer and support, and is particularly suitable for discontinuous, bursty or frequent small-amount data transmission and also suitable for occasional large-amount data transmission. Compared with GSM, GPRS technology has the following four advantages:
(1) realize always online
GPRS is an ideal basis for supporting wireless internet applications, such as internet access, where fast connections can be established with mobile services via GPRS networks. GPRS transmits the packed data in packet mode, and the user can directly connect to Internet and stay in the state of always on line without repeatedly using dialing mode to connect.
(2) High data transmission speed and large transmission quantity
GPRS can transmit data packets, the maximum transmission rate can reach 171.2K, which is more than 10 times of that of the existing GSM, and the huge data throughput of the GPRS enables high-speed transmission of pictures and videos.
(3) Reducing radio resource waste
Since GPRS uses a packet transfer mode, users occupy system resources only when they perform data transmission. When there is no data transmission, the system resource originally occupied by the user is dynamically allocated to other users.
(4) Charging by flow
The charging mode of GPRS is based on the importance of the transmission quantity, transmission time interval and transmission data sequence of data. As long as the user does not browse, download or transmit data, even if the user is online all the time, the user does not need to pay money additionally.
Based on the reasons, the pipeline drinking water system adopts the GPRS network for data transmission, so that the data transmission efficiency is ensured and the operation cost is reduced.
The pipeline direct drinking water system comprises a plurality of direct drinking water workstations 1 dispersed in different geographical positions and a monitoring center 2. The direct drinking water workstation 1 comprises a raw water treatment subsystem 3, a water supply subsystem 5 and a direct drinking water control subsystem 4.
Fig. 4 is a schematic structural diagram of a raw water treatment subsystem 3 according to an embodiment of the present invention. The raw water treatment subsystem 3 adopted by the invention comprises a raw water tank 40, a raw water pump 41, a filter (sand filtration) 42, a filter (carbon filtration) 43, a water softener 44, a security filter 45, a primary high-pressure pump 46, a primary reverse osmosis membrane component 47, a secondary high-pressure pump 48, a secondary reverse osmosis membrane component 49, a pure water tank 50, an ultraviolet disinfection tank 51 and a variable frequency pump 52.
According to these apparatuses, the specific process flow includes:
raw water-sand filtration-carbon filtration-softening-security filtration-reverse osmosis-disinfection-purified water-water supply.
The above is only the processing equipment and process flow for converting raw water into pure water of the present invention. On the basis of the raw water treatment subsystem 3, a high-pressure pump and a reverse osmosis assembly are replaced by a mineralization device, an ultrafilter and a precision filter, tap water can be treated into mineral water, and the specific process flow comprises the following steps: raw water-sand filtration-carbon filtration-softening-security filtration-mineralization-fine filtration-ultrafiltration-disinfection-mineralized water-water supply
Referring to fig. 4, fig. 4 is a schematic structural diagram of a pipe-direct-drinking water system for implementing remote monitoring management according to an embodiment of the present invention.
The direct drinking water control subsystem 4 comprises a GPRS wireless data transmission terminal (modem)11, a data security unit 12, an industrial personal computer 13, a PLC14, a data acquisition unit 15 and an intelligent instrument 16. Wherein,
the GPRS wireless data transmission terminal 11 supports the automatic switching of GPRS and GSM short messages, can adopt the working frequency of 900MHz and 1800MHz, supports the TCP/IP protocol, and adopts a UDP data transmission mode. The direct drinking water control system is connected with an industrial personal computer 13 through an RS232 serial port and is mainly used for establishing communication connection between the direct drinking water control subsystem 4 and a GPRS network, namely access of the GPRS network and wireless transmission of IP packet data. When the GPRS network breaks down, the mode is switched to the GSM short message mode, and the direct drinking water control subsystem 4 and the monitoring center 2 are in data communication through the GSM short message, so that the safety of the system is ensured. When the industrial personal computer 13 is not arranged in the direct drinking water workstation 1, the GPRS wireless data transmission terminal 11 can be directly connected with the PLC 14.
And the data security unit 12 is respectively connected with the GPRS wireless data transmission terminal 11 and the industrial personal computer 13 and is used for decrypting the received data and encrypting the sent data, so that reliable encryption strength can be provided for the data transmitted in the system, and the confidentiality of information transmission is ensured. Through encryption protection, the instruction format can be safely shielded, so that an illegal user cannot obtain the instruction format sent by the monitoring center 2. The data security unit 12 may be implemented by hardware or software, for example, if implemented by software, the software is run on the industrial personal computer 13 and is used for encrypting and decrypting data in the communication process. When the industrial personal computer 13 is not provided in the system, the data security unit 12 may be directly connected to the PLC 14.
The industrial personal computer 13 is responsible for uploading the data of the direct drinking water workstation 1 to the monitoring center 2 and receiving the control data downloaded by the monitoring center 2, sending the control data to the PLC14, and simultaneously completing the conversion of communication protocols and the automatic switching of two communication modes of GPRS and SMS.
PLC14 controls the process flow of processing tap water into direct drinking water in the direct drinking water workstation and the normal work of each device of the direct drinking water workstation 1, specifically includes monitoring and recording the running state of each device, sending various acquisition control commands, receiving the acquired data, sending alarm information, sending the data to industrial personal computer 13 to be transmitted to monitoring center 2, and controlling each device to run according to the data transmitted by industrial personal computer 13.
The data collector 15 is connected with the PLC14 and used for collecting important process data such as liquid level, temperature, pressure, flow, conductivity, PH value and the like of equipment in the raw water treatment subsystem under the control of the PLC14 and sending the collected data to the PLC 14.
The intelligent meter 16 is connected with the PLC14 and used for detecting and controlling a plurality of non-electric quantity signals.
The monitoring center 2 of the present embodiment is a local area network, and includes a plurality of monitoring computers 21, a network apparatus 22, an exchange 23 respectively connected to the monitoring computers 21 and the network apparatus 22, a server 24 connected to the exchange 23, a data security server 25 connected to the exchange 23, a firewall 26 connected to the data security server 25, and a router 27 connected to the firewall. The invention is a specific embodiment adopted by the invention, but the invention is not limited to the embodiment, the monitoring center 2 can be expanded into a multi-stage monitoring network according to the user requirements, one primary monitoring center can simultaneously manage a plurality of secondary monitoring centers, and each monitoring center can simultaneously monitor and manage hundreds of direct drinking water machine rooms.
The monitoring center 2 is connected with the GRPS network through a digital data network DDN data line, receives the data of the running condition of each device of the direct drinking water control subsystem sent by each direct drinking water control subsystem 4, stores the data on the server 24 or the data security server 25, and the monitoring computer 21 obtains the working condition of each direct drinking water workstation 1 by accessing the data and sends remote control data according to the specific condition.
The monitoring center 2 can also establish communication connection between the monitoring center 2 and the GPRS network through the GPRS wireless data transmission terminal, receive data of running conditions of each device sent by each direct drinking water control subsystem 4, send remote control data to the direct drinking water control subsystem 4, and in order to improve the safety of data transmission, the GPRS wireless data transmission terminal is connected with the GPRS network through a data safety unit. The monitoring center 2 comprises a plurality of monitoring computers, a network switch machine, a switch, a server, a GPRS wireless data transmission terminal and a data security unit. The GPRS wireless data transmission terminal is connected to any monitoring computer.
The monitoring center 2 is provided with a gateway 22 for establishing the connection between the monitoring center 2 and the internet, so that the user can control the operation of each direct drinking water control subsystem 4 through the internet.
The monitoring center 2 adopts a dual-computer hot standby mode: at ordinary times, one server is used as a host machine to operate, the other server is used as a redundant server, the data of the redundant server is updated by the host machine in real time, if the host machine is paralyzed, the redundant server takes over all tasks in a very short time, and if the paralyzed host machine is put into operation again, the host machine position is restored and the data in the paralyzed period is automatically updated from the redundant server. The perfect and reliable hot standby function ensures that the system can work safely and reliably. The monitoring computer 21 also provides a friendly man-machine interface, monitors the running state of the whole system in real time, has the functions of macroscopic monitoring and site simulation, remote measurement and control, fault alarm positioning, query statistical analysis, decision assistance and the like of a machine room site, and can release an information real-time display picture to the Internet.
The pipe direct drinking water system actually constitutes a point-to-multipoint bidirectional data transmission network. The monitoring center 2 and each direct drinking water control subsystem 4 can use two working modes of dynamic IP and fixed IP. When a small-scale network is formed by managing direct drinking water systems, the monitoring center 2 and each direct drinking water control subsystem 4 adopt dynamic IP addresses, for example, CMNET public network resources of Beijing mobile companies are used, so that the communication cost can be saved; when a large-scale monitoring network is formed by managing the direct drinking water system, the monitoring center 2 adopts a fixed IP address and is merged into a private network so as to improve the system efficiency.
At present, each raw water treatment subsystem 3 of the pipeline direct drinking water system can control the work thereof by three modes, one of which is as follows: the direct drinking water control subsystem 4 of the workstation directly controls, secondly, the remote monitoring center 2 controls the direct drinking water control subsystem 4 to work, thirdly, the remote INTERNT controls the direct drinking water control subsystem 4 to work by visiting the monitoring center.
The invention discloses a pipeline direct drinking water system for realizing remote monitoring management, and further provides a tap water system on the basis.
At present, a medium-sized or large-sized city is provided with a plurality of tap water treatment centers, and how to uniformly manage the tap water treatment centers in the whole city range or the whole province or even the whole country directly influences the reasonable utilization of water resources and provides safe and sanitary water for users, but the tap water system provided by the invention can realize the effect of remote monitoring and management.
The tap water system comprises a plurality of tap water treatment centers and monitoring centers for monitoring and managing the operation of each tap water treatment center, wherein each tap water treatment center comprises a raw water treatment subsystem, a water supply subsystem and a control subsystem which is respectively connected with the raw water treatment subsystem and the water supply subsystem. And each control subsystem establishes communication connection with the monitoring center through a Public Land Mobile Network (PLMN) so as to control the normal operation of the equipment of the raw water treatment subsystem and the water supply subsystem. PLMN networks include GSM networks and 3G networks.
The components and working principles of the tap water system and the direct drinking water system are substantially the same, and are not described herein again. The data which are only exchanged between the tap water treatment process of the tap water system and the monitoring center have insufficient points of existence, and the method specifically comprises the following steps:
the tap water treatment process comprises the following steps: the raw water is treated by sedimentation in a sedimentation tank, filtration in a filter tank, chlorination and disinfection, and is delivered out of a factory after passing through a water pump station by a clean water tank.
The data uploaded to the monitoring center by each tap water processing center comprises: conductivity, raw water flow, water supply flow, water tank liquid level, water supply pressure, residual chlorine, turbidity, current and state of the lift pump water supply pump and the dosing sewage pump, and the like. And the data downloaded by the monitoring center to each tap water treatment center comprises control data for controlling the operation of each device of the tap water treatment center.
Based on the system, the invention provides a method for realizing remote monitoring management of a water purification system. The method comprises the following steps: a data uploading step: after the registration of each water purification control subsystem in the monitoring center is successful, the data is sent to the monitoring center through a Public Land Mobile Network (PLMN) (step S110); data downloading step: the monitoring center sends a remote control command to the equipment of the net control subsystem through a Public Land Mobile Network (PLMN) according to the received equipment operation data, and the equipment is controlled to perform corresponding operation (step S120).
The invention also takes a pipeline direct drinking water system as an example to illustrate an embodiment of the implementation method of the invention, and the specific steps are as follows:
firstly, a registration step is carried out, after the GPRS wireless data transmission terminal 11 is powered on, the GPRS wireless data transmission terminal is automatically on-line, then a registration request is sent to a server of the monitoring center 2, the server receives the request, and the corresponding relation between the IP address of the direct drinking water control subsystem 2 and the GPRS wireless data transmission terminal 11 is obtained.
Then, a data uploading step is carried out: and uploading all the analog input information and the switching value input information of the equipment at regular time and uploading alarm information in real time. The analog input information comprises primary pure water conductivity, secondary pure water conductivity, raw water conductivity, concentrated water conductivity, pH value, COD value, dissolved oxygen content, inlet pressure of a variable frequency pump, system active power, system water consumption, raw water temperature and the like. The switching value input information comprises original water tank liquid level data, pure water tank liquid level data, softener regeneration, pretreatment backwashing, pressure states of ports of various stages of high-pressure pumps and the like.
Then, carrying out a data downloading step: the information downloaded by the center is mainly a remote control command, which comprises the following steps: the method comprises the following steps of starting and stopping a No. 1 raw water pump, starting and stopping a No. 2 raw water pump, starting and stopping a first-stage high-pressure pump, starting and stopping a second-stage high-pressure pump, starting and stopping a first-stage R0 water inlet valve, starting and stopping a backwater electromagnetic valve, starting and stopping a pure water ultraviolet lamp, starting and stopping a backwater ultraviolet lamp, starting and stopping a first-stage quick flushing valve, starting and stopping a concentrated water recycling electromagnetic valve, starting and stopping a concentrated water discharging electromagnetic valve, starting and stopping a system power supply, starting and stopping a water supply system.
In the process, heartbeat testing is also carried out, and the heartbeat is a testing means for testing the access between the monitoring center server and the GPRS wireless data transmission terminals of the direct drinking water workstations 1. And during the operation of the GPRS wireless data transmission terminal of the workstation, whether the path between the server of the monitoring center and the GPRS wireless data transmission terminal is normal or not is determined through heartbeat. After receiving the heartbeat of the other party, the other party returns the heartbeat as it is. The heartbeat parameters of the GPRS wireless data transmission terminal can be remotely configured in the monitoring center. Regardless of which direction the heartbeat is initiated to the opposite end, the opposite end is processed to bounce back as it is.
The drop reference is a means for providing a GPRS wireless data transmission terminal with a test wireless drop. For wireless reference points, a gateway or router within the GPRS network may be selected. The PING operation in the ICMP protocol is used for testing.
The GPRS wireless data transmission terminal comprises the following processing flows:
1) if the heartbeat and the off-line reference are not started, the GPRS wireless data transmission terminal does not send any test packet except normal data receiving and sending after being on line.
2) If only heartbeat is started, after the GPRS wireless data transmission terminal is on line, whether a wireless access is normal or not is determined through the heartbeat. If the time is exceeded (two heartbeat cycles are used as a timeout cycle to avoid an accidental situation), no heartbeat is received, and then communication reset is carried out.
3) If only the drop reference is started, after the GPRS wireless data transmission terminal is on line, the GPRS wireless data transmission terminal automatically determines whether to perform drop reset processing according to a set period and a PING reference point and a test result (in order to avoid accidental situations, two test periods are used as timeout periods).
4) And if the heartbeat and the disconnection reference are started, after the GPRS wireless data transmission terminal is on line, determining whether the wireless access is normal or not by judging whether the heartbeat sent by the GPRS wireless data transmission terminal is responded or not. And if the time is exceeded and no heartbeat response is received, PING refers to a point and determines whether to perform offline reset processing or not according to a test result. By the processing, the situation that the GPRS wireless data transmission terminal is mistakenly considered as a wireless disconnection and unnecessary reset processing is carried out after the monitoring center server fails or is shut down can be avoided.
If the center wants to determine whether the GPRS wireless data transmission terminal is on line, the line condition can be tested by sending a PING packet.
When the server is abnormally reset, the GPRS data transmission terminal is on the network. When the server is restarted and receives the heartbeat of the GPRS data transmission terminal, and the server does not have the registration corresponding information of the GPRS, a re-registration command is issued. And after receiving the command, the GPRS wireless data transmission terminal executes the registration action.
The monitoring mode of the monitoring center can be divided into three modes of timing reporting, automatic, active inspection, manual and emergency reporting and automatic, and the main principle is as follows: a polling label is arranged in a server, when the system samples the polling label, the server automatically starts an operation instruction, and sends a polling instruction with a station number through a GPRS wireless data transmission terminal. All direct drinking water workstations can receive the instruction, but only the PLC of which the station number accords with the station number in the polling instruction needs to sign, the data which is currently collected or is stored in a register in advance is uploaded, and the PC at the server side sends confirmation information to the client side after receiving the data, which indicates that the communication is finished and stores the data in a corresponding label. The polling period is set by setting the sampling frequency of the polling tag. If the communication is not successful for a certain time, the monitoring center can send out an alarm until the alarm is released after the communication is recovered.
While the invention has been described with respect to a few specific embodiments thereof, it is not so limited since modifications may be made by those skilled in the art without departing from the scope of the invention.
Claims (10)
1. The remote monitoring and management system for water purification is characterized by comprising a plurality of water purification workstations and a monitoring center for monitoring and managing the work of the water purification workstations, wherein each water purification workstation comprises a raw water treatment subsystem, a water supply subsystem and a water purification control subsystem connected with the raw water treatment subsystem and the water supply subsystem, and each water purification control subsystem is in communication connection with the monitoring center through a Public Land Mobile Network (PLMN).
2. The water purification remote monitoring and management system of claim 1, wherein the water purification control subsystem comprises a GPRS wireless data transmission terminal for establishing communication connection between the water purification control subsystem and the GPRS network.
3. The water purification remote monitoring and management system of claim 2, wherein the monitoring center comprises a GPRS wireless data transmission terminal for establishing communication connection between the monitoring center and the GRPS network.
4. The water purification remote monitoring and management system of claim 2, wherein the monitoring center establishes a communication connection with the GRPS network through a DDN data dedicated line or is connected with the internet through a gateway machine.
5. The water purification remote monitoring and management system of claim 1, wherein the water purification system comprises a pipe-through-water system, a reclaimed water system and a tap water system.
6. The utility model provides a water purification system's remote monitoring management's implementation method, water purification system includes a plurality of water purification workstations and surveillance center, and every straight drinking water workstation includes raw water treatment subsystem, water supply subsystem and straight drinking water control subsystem, its characterized in that includes:
a data uploading step: after the registration of each water purification control subsystem in the monitoring center is successful, the data of the water purification workstation is sent to the monitoring center through a Public Land Mobile Network (PLMN);
data downloading step: and the monitoring center sends a remote control command to the water purification control subsystem through a Public Land Mobile Network (PLMN) according to the received data, and controls the equipment of the water purification workstation to work.
7. A method for carrying out remote monitoring management on a water purification system according to claim 6, wherein the public land mobile network PLMN comprises GPRS.
8. The method of claim 7, wherein the registering further comprises:
the GPRS wireless data transmission terminal arranged in each water purification control subsystem sends out a registration request;
and a server of the monitoring center stores the corresponding relation between the IP address of the water purification workstation and the GPRS wireless data transmission terminal.
9. The method for implementing remote monitoring management of a water purification system of claim 7, further comprising: the GPRS wireless data transmission terminal sends heartbeat or drop test to the monitoring center at regular time, and communication reset is carried out when the wireless connection is abnormal.
10. The method for realizing the remote monitoring management of the water purification system according to claim 7 or 8, wherein the data uploading step further comprises the following steps: the monitoring center is provided with a polling label and sends a data uploading request to the water purification workstation.
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| CN 200410037232 CN1569657A (en) | 2004-04-29 | 2004-04-29 | Management system for remotely monitoring purified water and its implementing method |
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