Foreword 
 The Jinan the Tenda electronic independent R & D set of monitoring systems is the use of wireless monitoring of GPRS transmission technology to achieve water level, water level remote monitoring, water level real-time monitoring, real-time monitoring of traffic flow remote wireless monitoring, real-time monitoring of the switch. Can be used in remote monitoring of reservoirs, irrigation remote real-time monitoring, hydrological monitoring, groundwater level real-time monitoring, real-time monitoring of the steel water level, river water level real-time monitoring. 
 The system uses GPRS for data transmission, signal national coverage, real-time online, and computer high-speed, efficient data exchange; low running costs; equipment free from obstructions block the restrictions, no wiring between the monitoring points and control room; hardware and software specially designed anti-jamming. Particularly suitable for remote mountain areas, using plain. 
 Second, the Introduction 
 1, the system consists of: water level acquisition module, GPRS data transmission terminals, SCADA software, broadband, SIM card. 
 Acquisition module: the water level water level detection and GPRS terminal connected to the data to the GPRS terminal. 
 GPRS data transmission terminals: the terminal built-in GPRS module, capable of receiving the return water level detector water level value, and be able to transfer data to the monitoring center. Field data collection and upload to complete with the water level detector. 
 PC monitoring software: Monitoring Software installed on a networked computer to be able to receive the terminals of the data. People in the office to check the water level value. 
 Third, the system functions 
 GPRS data transmission terminal interface 
 GPRS data transmission terminal can receive the industry-standard design 0 ~ 5V, 4 ~ 20mA signal. The user can configure a variety of sensors for collection of water level, level acquisition. 
 1, the water level in real-time monitoring 
 The water level acquisition module and GPRS data transmission terminal connected to the collection of water level sent to the GPRS data transmission through the serial port terminal. GPRS data transmission terminal in accordance with the communication protocol to read the current water level data transmitted to the SCADA software. People can understand in the computer field level information. 
 Wireless remote control of pumps 
 GPRS data transmission terminal built-in relay wireless remote control pump switch when the water level exceeds the lower limit, the administrator in the control room operations monitoring software to wireless remote control pumps. 
 Pump action feedback 
 When the pump is turned on or off action, pump run status of GPRS data transmission terminal will upload to the host computer monitoring software, enables administrators to understand the pump current run state. 
 Real-time monitoring of the switch 
 GPRS data transmission terminal can access the switch, the switch through the network will be uploaded to the PC monitoring software for real-time monitoring of the switch. 
 Real-time monitoring of voltage and current 
 GPRS data transmission terminal with industry-standard interface, voltage sensors, current sensors access GPRS data transfer terminal, collecting voltage electric current, the data transmitted through the network to the SCADA software, real-time monitoring of voltage and current. 
 Limit alarm 
 Can be preset by software monitoring limits to the GPRS data transmission terminal, when the water level value, voltage, current overrun, GPRS data transmission terminal of the alarm information uploaded to the host computer monitoring software. 
 Fourth, review 
 Set of water level monitoring system using GPRS technology, so users can keep abreast of the water level information; GPRS Internet traffic accounting is one of the most economical means of transmission; the entire data transfer is dependent on mobile network nationwide remote transmission, the water level between the detection point and the office, no wiring, greatly reducing the cost of remote monitoring works.