gprs water remote automatic meter reading system

Xiamen Caimore Communication Technology Co.,Ltd2 F, 37#, Wanghai Road, Software Park 2, Xiamen,China (361009)[email protected] skype:caimoremichelle

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GPRS Water remote automatic meter reading systemSolution1 . IntroductionAs the departments of water supply for the reconstruction of "one householdone table", as well as the requirement of automation, a remote automaticmeter reading system has become water automation management and anindispensable part of intelligent control.In order to adapt to the water supplycompany user water meter and the need of modern intelligent building watermanagement, convenient water meter users pay the water fee, the xiamenCAIMORE technology communication specially designed for water supplycompanies, property management companies based on GPRS wirelessnetwork tap water remote automatic meter reading system.The system will becomputer technology, mobile data communications technology, networktechnology, automatic control technology to dissolve into an organic whole,can automatically complete water meter network and remote data acquisition,records, real-time monitoring, statistical analysis, print, and for, water controlmanagement work.2 . ComponentsWater remote automatic meter reading system consists of monitoring center,communication networks and wireless networks meter (digital water meter +CM3150P DTU) components. It comprises a central station monitoring center,computer and system software, monitors, printers and other equipment, thecentral station computer communication with the use of a wireless networkmeter China Mobile's GPRS network. The system is suitable for the watercompany vast distances, dispersed separate water meter users, systemnetwork block diagram shown in Figure

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3 . Function3.1, the automatic detection function: the system for water meter (flow) andother parameters (pressure) data collection, monitoring, recording, and dataanalysis and processing, the formation of a variety of graphs and reports,remote unmanned automatic meter reading.3.2, dynamic display function: timed or random dynamic display networkautomatic meter reading system drawing surface water per meter and theentire system including the total amount of water meter.3.3. Printing: You can print each meter monthly, annual reports and monthlywater bills, the total water consumption can print day, month, annual reportsand monthly charge for water, annual reports.3.4, data management functions: establish historical database to store rawdata for statistical analysis. Analysis of calculation of water consumption andother data collected cumulative, average, maximum, minimum and so on, thesystem database for the expansion and maintenance of all sizes to meet thewater meter reading and maintenance department data use.3.5, mergers, web browsing functions: The system can be connected to thewater supply company's servers, local area network access through thecompany's existing water supply business charge computer managementsystem, to achieve information sharing.3.6, automatic bank payment: through the monitoring center managementsystem and bank charges mount, billing flexibility.3.7, the case can be based on user pay water supply or water control, IC cardhaving a support function.4 . Main equipment4.1, the central station machine: instructions for sending the monitoring centercomputer and receive wireless network meter information, and informationthrough the RS-232 / RG45 communication interface into the computer.4.2, the system software:

System development of professional software, which combines softwarewith the latest international fashion trends, can run on Windows98,Windows2000, WindowsXP, Liunx other mainstream operating systems.System software release machine instructions by the central station,monitoring the implementation of the system, is responsible for configurationand network management of the collection site, while the input data into thedatabase, you can issue commands to achieve parameter setting, datamonitoring, statistical analysis and report printing and supply , water controland other treatment.4.3, CM 3130P GPRS DTU Technical parameters:

CM 3150P GPRS DTU using high-performance industrial embedded ARM9processor, real-time operating system software support platform, large memory,built-in proprietary TCP / IP protocol stack. To provide users with high-speed,reliable, always-on data terminals, multiple protocol conversion of a virtual




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private network. For user-network flow control products support voice,messaging, data and on-line trigger automatic disconnection timeout function.Also supports dual data center backup, and synchronize multiple data centersto receive data, and other functions.

Cellular1, supports EGSM900 / GSM1800 wireless network2, GPRS multi-slot class 103, coding schemes: CS1 ~ CS44, in line with the technical specifications SMG31bis5, Compliant to GSM phase 2/2 +Support data, voice, SMS and faxHardware System7, CPU: Industrial ARM9 CPU, 200MPS, 16K Dcache, 16K Icache (the

industry's most advanced CPU)8, FLASH: 8MB (expandable to 32MB) (the industry's largest memory

capacity)9, SDRAM: 64MB (expandable to 256MB)10. Interface:An RS232 serial port. Serial rate 110 ~ 230400bits / sIndicator: Power Comm OnlineAntenna Interface: standard SMA female antenna interfaces, the

characteristic impedance of 50 ohms.SIM card interface: 3V / 5V standard user card interface putt.Power Interface: standard 3-pin power jack.Voice interface: standard headphone microphone interface.11, power supply:External power supply: DC 9V 500mAWide voltage power supply: DC 5-35VCommunications Current: 350mAStandby Current: 35mA12, industrial wireless moduleGRPS module: Simens MC39i13, sizeDimensions: 92.7x61.3x23 mm (not including antenna and fixed parts)14, other parameters:Operating ambient temperature -25 ~ + 65ºCStorage temperature -40 ~ + 85ºC95% relative humidity (non-condensing)Software features1. Intelligent anti dropped support of online testing, online maintenance of

automatic redial dropped calls, to ensure that equipment is always online.2. Support RSA, RC4 encryption algorithm3. Support virtual duty VWM (Virtual Man Watch) function to ensure stable




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and reliable system4. Support for virtual private network data (APN)5. Transparent data transmission and protocol conversion, support multiple

operating modes6. To support the data center dynamic domain name and IP address access7. supports dual data center backup8. Support multiple data centers9. Supports master and slave modes10. Support SMS, voice, data and other wake-up mode and network

connection timeout.11. Support SMS backup and alarms.12. multiple hardware and software watchdog13. The packet transmission status reports.14. The standard AT command interface15. can be used as an ordinary dial-up MODEM16. Support telnet function.17. Support remote configuration, remote control18. Software upgrades through the serial port19. supports LINUX and WINDOWS operating systemsNetwork MeterSpecifications and ordinary water the same accuracy of national standards

for measurement level. The meter combines the Xiamen Caimorecommunication CM 3150P GPRS DTU, with measurement accuracy(telemetry display readout of water and water itself exactly the same value),stable and reliable, low power consumption, no missing data features, to solvethe remote digital measurement error, fear power outages, power consumption,shortcomings fear of interference. Network water meter can be used directly220V mains or DC power supply. Wireless network stations without reprovisionmeter machine, which has similar performance station machine by CM 3150PGPRS DTU and the central station machine data directly using China Mobilewireless network.

5, a computer (PC), LCD monitor or projector, printers, uninterruptiblepower supplies, surge arresters and other equipment purchased general orspecific products, according to the meter reading system and user needs andconfiguration.

Fifth, the system featuresThe system has the following characteristics:1, the system has all the advantages of GPRS, namely:1.1 Forever Online: as long as the activation of GPRS, will always stay on

the line, there is no dropped calls; similar to a radioLine network.1.2 high-speed transmission: Because GPRS take the advanced packet

switching, data transmission and the maximum theoretical value of up to




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171.2kb / s. Therefore, the system transmits data on a removable informationsuperhighway.

1.3 by the amount of fees: GPRS to receive and send data to the number ofcharges in accordance with the present system, when there is no transfer ofdata traffic, even online, without charge. Therefore, it is a use-oriented,scientific and reasonable billing.

2, automatic detection meter reading function of the system allows thewater company (or residential property management department) timely andaccurately grasp the situation of water users and meter charge for water, sowater management and service quality has leapt to a new level, effectivelypromoted the water company (or residential property sector) to improve themodern management level.

3, the system can solve the problem of real-time water management,real-time measurement and remote control for remote automatic metering ofwater supply companies, water sharing billing, water management and waterloss analysis of real-time remote monitoring system of modern watermanagement provides a reliable means.

4, remote meter reading and automatic meter reading can reduce thenumber of employees and related expenses, reduce labor intensity andimprove work efficiency meter; the measurement accuracy of the system willprevent the leakage of artificial negligent copy, copy error, estimate copy ;real-time monitoring of the system can reduce the leaking pipe rupture, waterusers and other water loss caused by illegal; the application of the system willeffectively improve water recovery and reduce operating costs of the watersupply network.

5, large capacity non-volatile memory, can store large amounts of watermeter data, power data is stored for 10 years; password protected,unauthorized users can not operate.

6 . the system significant economic1, lower project costBecause of the city's tap water supply coverage reached more than 95% in

general, thousands of families of both water dispersion and away from thewater companies, water companies over the years applied communicationradio telemetry systems typically use radio. Such as the use of this type ofcommunication, monitoring and control center of the water companies arerequired to configure the radio, dedicated power supply and high-gain antennatower in the urban water users throughout the measuring point addition toconfiguring the radio and dedicated power supply, the need to configure thehigh-gain directional antenna. The communication system using ChinaMobile's GPRS network, the Control Center Water Division simply configurebuilt-in antenna central station machine, water meter measuring point youneed to configure a wireless network or station meter machine. This type ofwireless network meter and test station machine, each occupies only a mobile




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phone number, the reliability of its communication with the mobile phone.Therefore, the project cost of the system than the system of low-costapplication stations at least 10-20 million or more (the more the greater thenumber of measuring points difference).

2, low running costs2.1 system uses China Mobile's GPRS communication network without the

use of radio, no antenna or directional antenna tower erection and otherancillary equipment, wireless network and station meter machine is basicallymaintenance-free operation, no maintenance with professional and technicalpersonnel so low maintenance costs. The use of radio communication for anapplication to the radio channel resources management, professional andtechnical personnel to be equipped with maintenance, so maintenance costs,staff wages and transport fares, plus fees, electricity and channels occupied,its overall operating costs expenses less than a month 3,000.

2.2 may use its communications network signed an agreement with ChinaMobile Communications Corporation, according to the amount of the chargetransfer. GPRS method of accounting standards: 0.01 yuan / 1kb, a minimumcharge of 20 yuan per month. Each measuring point transmission capacity to2kb / second count, if 1 hour of data transmission, then a month of calls = 2kb× 24 × 31 × 0.01 元 /1kb=14.88 yuan; the minimum charge is 20 yuan.Currently, communications and some remote automatic meter-reading systemusing China Telecom's telephone line transmission, if transmission data perhour, then each measuring point 1 month of calls = 24 × 31 × 0.20 yuan =148.80 yuan; therefore, wired telephone lines for transmission ofcommunications Billing and the system uses the GPRS compared to 148.80 ÷20 = 7.44 times.

ConclusionsIn summary, the application of GPRS tap remote automatic meter reading

system has significant social and economic benefits, which advanced,practical, scalability, security, reliability, making her will in the water industrymore widely to promote the application for the development of the waterindustry to make greater contribution.


gprs water remote automatic meter reading system

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