基于ARM11的环保专用污染源数据采集传输仪的设计

发布时间：2018-04-23 21:17

本文选题：环保物联网 + GPRS　；参考：《天津大学》2012年硕士论文

【摘要】：随着环保物联网建设的推进,我国将在十二五期间建设立体的、全方位的环境监控体系。本课题以移动数据传输应用为目标,依托目前无线覆盖面积最大的移动网络,设计了一款对采集数据实现实时监控功能的嵌入式设备,为天津市乃至全国节能减排、重点污染源实时监控以及重大环保污染事件应急监控处理提供技术支撑。本课题提出了基于ARM11的环保专用污染源数据采集传输仪的设计方案,以国家环保部发布的"污染源在线自动监控(监测)系统数据传输标准"(HJ/T212)和"污染源在线自动监控(监测)数据采集传输仪技术要求"(HJ 477)为设计标准;以天津市环保物联网的建立为远期愿景。本论文设计的基于ARM11的环保专用污染源数据采集传输仪具备以下技术特点: 1、依托新一代三星S3C6410处理器构建ARM平台,设计研发的辅助的A/D采样模块,可采集8个通道模拟量(4mA~20mA电流输入),分辨率达到12位; 2、通过拓展芯片实现5个RS232(或RS485)数字输入通道,用于连接监测仪表,实现数据、命令双向传输; 3、同时支持无线、有线两种网络传输方式,以Siemens MC39i模块构建DTU实现GPRS网络传输,同时通过DM9000网络芯片实现以太网传输; 4、自行设计了电源模块,实现了外部供电电源与备用电池协同供电的功能,满足国标HJ 477“在外部电源切断后仍然能够满负荷运转至少六小时”的要求; 5、在软件实现方面,在定制Windows CE嵌入式操作系统基础上,开发了嵌入式软件实现通信协议(国标HJ/T212)和人机交互功能; 6、本设计引入SQLite技术在嵌入式系统上建立污染信息数据库,为后续开发环保物联网云计算应用提供可靠和高效的数据来源。基于上述方案开发的污染源数据采集传输仪TY-001型已经实现小批量生产,样机可通过模拟/数字接口实现和CEMS系统及水质监测仪器的成功对接,数据采集稳定可靠。目前本样机已通过天津市质量监督检验站的EMC、高低温疲劳试验等测试,同时仪器精度和通讯协议也通过了中国环境监测总站的鉴定,等最后一项MTBF(60天平均无故障连续运行时间)测试通过后,就可获取国家环保产品资质证书,正式进入国内市场。
[Abstract]:With the promotion of the construction of the Internet of environmental protection, China will build a three-dimensional and omni-directional environment monitoring system in the period of 12th Five-Year. Based on the mobile data transmission application as the target, and relying on the mobile network with the largest wireless coverage area, an embedded device for real-time monitoring of data acquisition is designed, which is the Tianjin City It provides technical support to the national energy conservation and emission reduction, the real-time monitoring of the key pollution sources and the emergency monitoring and treatment of major environmental pollution events. The project proposed the design scheme of the data collection and transmission instrument for environmental protection special pollution sources based on ARM11, and the data transmission standard of the "on-line automatic monitoring and control (monitoring) system of pollution sources" issued by the Ministry of environmental protection of the State Environmental Protection (HJ/T) 212) and the technical requirements of the "on-line automatic monitoring and monitoring (monitoring) data acquisition and transmission instrument" (HJ 477) as the design standard, and the establishment of the Tianjin environmental protection network as a long-term vision.
The ARM11 based environmental data acquisition and transmission instrument for pollution sources has the following characteristics:
1, based on the new generation of Samsung S3C6410 processor, the ARM platform is constructed, and the auxiliary A/D sampling module is designed and developed, which can collect 8 channel analog (4mA~20mA current input) and reach a resolution of 12 bits.
2, by expanding the chip, 5 RS232 (or RS485) digital input channels can be used to connect monitoring instruments to achieve two-way transmission of data and commands.
3, at the same time, it supports two transmission modes of wireless and wired network, and the GPRS network transmission is realized by Siemens MC39i module, and Ethernet transmission is realized by DM9000 network chip.
4, the power module is designed by ourselves, which realizes the function of power supply of external power supply and standby battery, and meets the requirements of national standard HJ 477 "for at least six hours after the external power supply is cut off."
5, on the basis of customizing Windows CE embedded operating system, the communication protocol (national standard HJ/T212) and human-computer interaction function of embedded software are developed on the basis of software implementation.
6, the design introduces the SQLite technology to build the pollution information database on the embedded system, and provides reliable and efficient data sources for the future development of the cloud computing application of the environmental protection network.
The TY-001 model of the source data acquisition and transmission based on the above scheme has achieved small batch production. The prototype can be successfully butted with the analog / digital interface with the CEMS system and the water quality monitoring instrument, and the data collection is stable and reliable. At present, the prototype has passed the EMC of the Tianjin quality supervision and inspection station, the high temperature fatigue test and so on. At the same time, the instrument accuracy and communication protocol have also passed the identification of the China environmental monitoring station. After the last MTBF (60 day failure continuous running time) test passed, the qualification certificate of national environmental protection products can be obtained and formally entered the domestic market.

【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2012
【分类号】：X85;R12

【参考文献】