基于STM32单片机DTU检测仪的研究与设计

发布时间：2018-01-14 05:36

  本文关键词：基于STM32单片机DTU检测仪的研究与设计　出处：《南京理工大学》2014年硕士论文　论文类型：学位论文

  更多相关文章： DTU检测 MODBUS STM32单片机 实时采集

【摘要】：该检测仪是针对常州维格电子有限公司生产的Weeg-G DTU (Wireless Data Terminal Unit for Gas Meter)产品所专门研发和设计出来的一种测试装置。Weeg-G DTU即燃气计量无线数据采集单元。它是以工商业燃气计量管理为目的的集计量仪表的采集、压力的采集、温度的采集、泄漏浓度的采集,门禁、阀门或执行机构状态的监视和阀门的远程控制为一体的无线远传装置。是一种可安装于爆炸性气体危险场所,采集现场仪表数据并通过GSM/GPRS或CDMA无线通信网络或RS485有限通信方式将数据上传的装置。通过内置的计量数据通讯协议库,DTU读取现场流量计量仪表(如电子气体体积流量修正仪、防爆型一体式气体涡轮流量计等)或其它仪表(如温度变送器、压力变送器、燃气泄漏报警器等)的数据,将其转换成标准的MODBUS协议数据格式,并通过相应的通讯网络上传至上位监控软件。Weeg-G DTU燃气计量无线数据采集单元除了接两台流量计量仪表、一台4～20mA模拟量信号仪表、一台开关量输入仪表、一台开关量输出仪表外,配合标准MODBUS扩展模块,还可同时接四台或更多流量计量仪表和相关设备,由此使得爆炸性气体危险场所的数据采集远传变得更安全、更简单、更经济。本检测仪主要是对Weeg-G DTU相关参数和性能进行测试,使其达到规定的技术要求。其中包含了开关量输入的测试、开关量输出的测试、模拟量输入的测试、三种通讯口的测试、DTU工作电压和温度的测试。通过计算机软件采集测试数据,显示电压、电流及温度的数值变化曲线,并对数据的正确和错误进行报警提示。
[Abstract]:This instrument is aimed at Changzhou Ludwig Electronics Company Limited production of Weeg-G DTU (Wireless Data Terminal Unit for Gas Meter) a test device of.Weeg-G DTU products dedicated to R & D and design the gas metering wireless data acquisition unit. It is based on industrial and commercial gas metering management set for the purpose of collecting meter, pressure the acquisition, the acquisition of temperature, leakage concentration collection, access control, wireless remote monitoring and remote control device of valve valve or actuator of the state as a whole. Is a kind of explosive gas can be installed in a dangerous place, collect data and instrument through GSM/GPRS or CDMA wireless communication network or RS485 limited communication mode device data upload. By measuring the data communication protocol library built-in, DTU reads the scene flow measuring instruments (such as electronic gas volume flow rate correction device, a gas explosion proof type The body of turbine flowmeter etc.) or other instruments (such as temperature transmitter, pressure transmitter, gas leakage alarm) data, convert it into MODBUS protocol data format standard, and upload to the computer through the communication network monitoring software.Weeg-G DTU gas metering the corresponding wireless data acquisition unit in addition to pick up two sets of flow meters, a table 4 ~ 20mA analog signal meter, a switch input instrument, a switch output instrument, with the standard MODBUS extension module, also can be connected with four or more flow meter and related equipment, which makes the data acquisition of explosive gases in dangerous places far safer, simpler, more economy. The detector is mainly on Weeg-G DTU related parameters and performance test, to meet technical requirements. Including switch input test, switch output test, Analog input test, three kinds of communication port test, DTU working voltage and temperature test. Through computer software acquisition test data, display voltage, current and temperature numerical change curve, and alarm and correct the data.

【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TU996
，

本文编号：1422282