GPRS Wireless Communication Research Articles

Monitoring System of Greenhouse Based on GPRS Wireless Communication Technology

With the development of wireless communication technology and mechanical technology, the combination application of the two technologies to agricultural production has become the inevitable trend of agricultural development. Using Nx5883 wireless remote control terminal, a greenhouse environment monitoring system based on GPRS has been designed. It introduces the composition of hardware and working process of the system. The system can monitor the change of temperature and humidity in environment and soil, soil’s PH, and illumination timely. It transmits the signals and dates to the data terminal though wireless network, then the terminal can make the corresponding feedback. This system can real-time monitor and control the greenhouse environment.

Design of Intelligent Windows Based on Power Line Carrier and GPRS Communication Technology

Aiming at the problem of traditional windows need manual operation, intelligent windows system based on power line carrier (PLC) and GPRS wireless communication technology was designed. The system used PLC technology realize the establishment of the internal network; Used varieties of sensors as peripheral detection devices and data acquisition equipment, transmitted collected data to central controller through the power line; Used ARM9 embedded processor S3C2440A as center controller; Used GTM900C module as interface between internal network and external network, passed data and forwarded control commands. Terminal PC used LabVIEW graphical programming language, it could receive GPRS signal coming from Internet according to the fixed IP address and port number, and sent monitoring commands to the fixed IP address. This paper listed out hardware block diagram and software implementation process. The design concept can spread to other intelligent households. The experimental results suggest that the intelligent windows have implemented smart windproof, rainproof, anti-theft, fire prevention and prevent gas poisoning. It provided a good solution for the design of smart home.

The Design of the Temperature Auto-Monitoring System Based on GPRS

The system is constituted by the multi-point temperature sensing device in site, the GPRS wireless communication module and the temperature monitoring center. The data acquisition and processing of the temperature is achieved by the low-power and high-performance microcontroller MSP430F149. Based on the GPRS module controlled by the microcontroller serial ports, the temperature data is transmitted to the remote monitoring center through the link consisted by the GPRS network and the Internet. The establishment of the data listening and receiving in the monitoring center is through the Socket. The temperature data is saved in the Access database and database developed using Visual Basic, which enhances the effectiveness of the database management.

The Design of Remote Device Monitoring System Based on WINCC and GPRS

In this paper, the remote monitoring system based on WINCC and GPRS is introduced. Status data of field devices collected by Siemens S7-200 PLC is transferred to the data center through GPRS wireless communication network of China mobile and field devices are controlled by PLC receiving commands from the host computer. So, production efficiency and economy benefit are improved greatly.

气象预警信息显示终端设计

Based on the national public administrations' demand for meteorological early warning,a specialized meteorological early warning information display terminal is designed.With inte-grating SMS technology,GPRS wireless communication technology,speech synthesis technology,LED display technology,embedded Linux technology and Qt software designing technology,the system realizes receiving,displaying and broadcasting remote meteorological warning messages.The task requirement,hardware design,soft ideas and the LCD interface driver based on Linux are described in details.Experimental results show that the system displays images distinctly,communicates with the control center stably and meets the design requirement entirely.

Remote Image Acquisition and Transmission Framework for Monitoring Plant Growth Based on ARM9

In order to monitor the plant growth in greenhouse, a new method based on GPRS and Internet wireless communication technology was introduced in this paper. It is a system involving S3C2410 of ARM9 kernel as the microprocessor chip, which can be run in Linux operating system and takes the wireless transmission mode of GPRS+Internet as an adoption. The structure of the whole system, hardware design and image acquisition and transmission framework were introduced. A detailed explanation was given about planted method of operating system in the paper.

Wet Gas Flow Rates Computation System for Unattended Operational Natural Gas Well Based on ARM

In order to measure the gas and liquid flow rates of the wet gas on line not separation, this paper develops a wet natural gas two-phase computation system, which accompanies with the dual throttling wet gas flow meter as a secondary instrument. This flow computation system is based on ARM9 embedded system with the Linux OS and is powered by a solar power system. A hardware and software platform of a secondary instrument working for the flow rates computation is constructed for unattended operational natural gas wells. The signal acquisitions of the pressure, differential pressure, temperature, and the calculation of two phase metering model have been actualized. In addition to the basic function, the system provides display, storage, and historical data inquiry of the instantaneous and accumulative flow rates, as well as the GPRS wireless communication. It has already been trial run at some unattended operational wellheads for the gas and liquid metering of the wet gas.

A Real-Time Remote Automatic System for Monitoring the Subsidence of Building

A system, which is real-time, remote, automatic for monitoring the subsidence of building, is introduced. Hydrostatic leveling, displacement sensing by electromagnetism, GPRS wireless communication and computer technology are integrated into the system. The system has the following functions: real-time, continuous acquisition and management of the monitored data; automatic computation and analysis of the subsidence; remote, wireless release of information and early-warning. Applied successfully to monitor the subsidence of the main building of Tianjin West Railway Station in its integral moving, the system has taken the key directive effect in adjusting the schedule and the methods of construction timely.

Study on the Key Techniques of Remote Monitoring System for Large-Scale Equipments

Remote monitoring is an important technical way to assure the key equipment to run properly and safely. In the paper, a remote monitoring system based on GPRS wireless communication was developed for large-scale equipments. The architecture of the system was given. The key techniques of the system design, including the remote data transmission, remote monitoring and fault diagnosis techniques were analyzed. Furthermore, the hardware and software design of Data Transmission Unit (DTU) was introduced in detail. And the functional modules of the remote monitoring service system were presented. The system provides an effective way to realize remote monitoring and fault diagnosis for large-scale equipments.