Relatively the water resource in the earth’s surface is complicated on the groundwater resources, because the changes of one’s own quality and quantity of entering the water here and causing transporting and can’t observe to move the law directly of environmental condition and groundwater that the groundwater change, meanwhile, it is slow modification that pollution and groundwater of the groundwater exceed and adopt the surface subsidence caused, once accumulate it to certain extent, become irreversible destruction. So develop and must rely on the long-term groundwater to monitor when protecting the groundwater accurately, grasp the dynamic change in time.
Second, systematic solution
2.1 Systematic summary
The groundwater monitors the scheme ‘ Low consumption GPRS application in the groundwater monitoring system that the battery supplies power) Relying on the Chinese commmunication company GPRS network, staff members can look over the water level of the groundwater, data of the temperature, conductivity in the monitoring center. The monitoring management software of the monitoring center can be realized the long-range collection of the data, monitor long-rangely, all data monitored enter the database, produce various report forms and curves.
2.2 The system makes up
The groundwater monitors the scheme ‘ Low consumption GPRS application in the groundwater monitoring system that the battery supplies power) Made up of four parts: Monitoring center, communication network, little consumption observe and control terminal, monitor the recording instrument by water level ‘ Fluviograph) .
2.3 Topological picture of system
2.4 Monitoring center
2.4.1 Central software system summary
The groundwater is monitored ‘ Low consumption GPRS groundwater monitoring system that the battery supplies power) The software is the specialized software of monitoring system of groundwater, adopt B/S structure, is managed by system manager, leader or other staff members can visit the server on one’s own computer through the LAN after mandate, can carry on the operation in right range. If necessary, this software can be released in INTERNET common network, the grantees can all visit and operate this system on the computer of any place through INTERNET common network.
This software adopts the module structure, mainly include two major module: One is man-machine interface, another one is that the communication is leading. Each module is made up of several small module again. Getting leading communication software responsible for control center and on-the-spot communication of apparatus mainly, it has strong compatibility, can support GPRS, CDMA, MODEM, RS485,etc. communication products that any producer produce, support many kinds of the intersection of communication and way coexist a system. Much content such as the man-machine interface including basic data management, long-range operation, inputting, data inquiry, data report form, data analysis, map management manually, can design making up individualized control and management system software according to different customers’ different demands.
2.4.2 The monitoring center disposes
The centre possesses the broadband network ‘ Type: Optic fibre, network thread, ADSL,etc.) ,And tie fixed IP definitely.
A special-purpose computer, places on the computer lab, as the fixed IP server, the software of controlling server operating system and database software and system holds inside, store the data, guarantee its 24-hour online.
The software of operating system: Recommend Windows 2003 Server with sp2
Database software: Recommend Microsoft SQL Server 2000 SP4, as the software platform of backstage supporter’s database of system.
The groundwater monitors the system software: Finish functions such as receiving, revealing, storing and statistical analysis of the long-range data,etc..
2.4.3,The groundwater monitors the function introduction to the system software
Main interface of software
The interface reveals the map to start the machine, each one on the map seat of monitoring point of entering the water reveals with the dot, red represents the trouble, green represents normally, when the mouse puts the position of dot, reveal this examines water level, water temperature,etc. data clicked.
The information of monitoring point that basic information fills in for users, including urban information, county’s information, unit information, the information of every monitoring point that get, can upload the picture inside examining some information, as the backup to the surrounding environment of this monitoring point.
Click & ldquo; Operate & rdquo long-rangely; Press the button, can enter detailed interface of monitoring point, look over and should examine the detailed data ordered.
Data report form
Users can produce daily sheet, monthly report form, annual report form and water level and temperature contours of arbitrary time slot according to the actual conditions.
2.5 communication networks
GPRS network signal of China Mobile is widely coverd, data transfer rate high and communication quality reliable and yards of low rate by mistake, run stable, data transmission high installing and debugging simply and conveniently in real-time character, security and dependability, charge according to the information flow, user’s use cost is lower.
This systematic communication network adopts Chinese commmunication company GPRS network and Internet common network. Require the control center possess broadband ‘ Type: Optic fibre, network thread, ADSL,etc.) ,And the one that have on a Internet network fixes IP.
The monitoring point observes and controls terminal inside and disposes GPRS wireless data transmission module, installation opens SIM card of the open GPRS function in the module. Observe and control the terminal station through GPRS wireless data transmission module in its inside and control the central server to make up a communication network, long-range data transmission of the implementation system.
The network operates the expenses:
Monitoring center: Need to pay the cost of use of broadband, the concrete expense standard is in the relevant department’s consultation of the locality, please.
Monitoring point scene: Communication expenses (the fee of data communication take Hebei as examples of SIM card of each monitoring point, ask to consult the local commmunication company in concrete expenses standard) — — Per month ( 30M) at 5 yuan . The fee of total communication of every month is the quantity of 5* on-the-spot monitoring points that the son stands.
2.6 The on-the-spot monitoring point water level monitors the terminal station
Because water level the intersection of monitoring point and on-the-spot most, in field, scene supply power power, report the frequency according to the data of the on-the-spot monitoring point, supply power two kinds of schemes are available that the way has solar energy that supply power and supply power with lithium battery. The data use the solar energy to supply power while appearing in the newspaper frequently, the data use lithium battery to supply power when not appearing in the newspaper frequently.
2.6.1 Scheme of supplying power of lithium battery
Suitable for monitoring well in the room did not standing, dispose the battery group of a group of lithium as the working power, especially suitable to have on-the-spot environment that external power supplies power, the little consumption is designed, the lithium battery group can work for 1-5 years normally.
Note: The effective life-span of the battery is 5 years, the actual life is greater than wireless communication 10,000 times.
Scheme of supplying power of the solar energy power on 2.6.2
Use the solar energy to supply power and suitable for having the monitoring well in the station room, the solar energy power is divided into three parts, the solar energy panel, solar energy charge the controller, lead-acid battery. According to the on-the-spot power consuming apparatus ‘ Include the little consumption and observe and control and gather the apparatus terminally and live) Capacity which power last the size and storage batteries of board.
Below is a computing technology.
The solar energy is stiff to formulate the computing technology: The panel disposes the power (W) =Apparatus consumption (W) × Every day working time ( Hour) × 1.2 (safety coefficient) ÷ [5 hours (the valid working time of every day) × 0.6 (charge efficiency) ]
The storage battery disposes the computing technology: The storage battery disposes the capacity (Ah) =Apparatus consumption (W) × Every day working time ( Hour) × It is overcast and rainy (days) ÷ [Voltage (V) that the apparatus supplies power × 0.6 (the efficiency of supplying power) ]
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