Designof Remote Monitoring System Of Electronic Belt Scale Based On3G

With the rapid development of China’s production of industrial automation,electronic belt as a high-precision, high-performance metering equipment is widelyused in coal mines, docks, metallurgy, electric power and other industries. In order toincrease production and energy efficiency, more than ten belt scales are often wokingsimultaneously. Harsh field environments and a lot of duplicate records greatlyincrease the company’s labor costs. And in the continuous work of electronic belt, thebelts often occur deviation, tearing, slipping phenomenon, which not only affects theaccuracy of the belt scale measurement, but in severe cases, can lead to the occurrenceof accidents in production site. Therefore, in order to reduce labor costs and securityrisks in the production site,it is necessary to real-time monitorthe operation ofelectronic belt and site conditions.Due to the rapid increaseing network bandwidth and computing processing power,China has entered the era of third generation wireless video surveillance. ThroughResearching the current3G wireless network monitoring in industrial site andconsidering the case of multiple-site belt scales simultaneously work,this paperpresents a remote monitoring system design of electronic belt based on Profibusfieldbus plus3G networks.The design is divided into three modules: the next crewscene acquisition board, the upper monitor connected to the site acquisition board viaProfibus fieldbus and3G remote monitoring terminal. In order to red uce3G flowcharges, the paper is designed based on C/S network model. When the user send arequest for information to view the scene via3G remote monitoring terminal the uppermachine receives user’s request, and issue the control commands to lower machineacquisitionth board, and open the camera around the electronic belt, for the collectionand transmission of video information. However, when any abnormal situationoccurs,the upper machine will send a text message to remind the user of3Gterminals,actively requesting the next crew to open the video surveillance, andfeedbacking the field failure information to the user timely.On the design of hardware, the next crew acquisition board uses LPC2138mainchip, with various sensor input interface, communicating with the the upper machine through the Profibus bus interface. the upper machineuses S3C2440main chip ofSamsungCorp, externally connected by USB cameras and3G cards,and receive inferirinformation as a Profibus master and get Internet network access by3G wirelesstransmission mode, sending the information to the user terminal. The user remotemonitoring equipment is3G mobile phone or PC.On the software design, the lower position machine gathering board uses UC/OSthe operating system of excellentreal-time performance, to acquery input informationof each sensor by the way of multitask real-time. The upper machine adopts embeddedopen-source Linux operating system to receive the lower position machine information,and use the Linux kernel V4L2interface for video capture,construct mjpg-streamervideo server, and send the information to the remote monitoring terminal through thesocket network programming.By using these kinds of embedded hardware and software technology, users canultimately apply this system to monitor the romote conditions of the electronic beltscales for the purpose of the realization of the recording field data and preventingaccidents occurring.