Research And Design Based On STM32 Microcontroller DTU Detector

The DTU tester is for Changzhou Weige Electronic Company Limited production of the Weeg-G DTU (Wireless Data Terminal Unit for Gas Meter) device for testing products specialized R & D and designWeeg-G DTU is the gas metering wireless data acquisition unit. It is a wireless remote device remote control to industrial and commercial gas metering management for monitoring and the valve to set pressure meter collection, collection, the collection of temperature, concentration of acquisition, access or leak valve or actuator’s status as one of the. Is a kind of can be installed in hazardous areas of explosive gas, collection field instrumentation data and through GSM/GPRS or CDMA wireless communication network or RS485 finite communication device for data upload. Through the measurement data communication protocol library built-in, DTU read the scene flow meter (such as electronic gas volume flow rate correction apparatus, explosion-proof type integral gas turbine flowmeter) or other instruments (such as temperature transmitter, pressure transmitter, gas leakage alarm) data, convert it into MODBUS protocol data format standard, and through the communication network to upload the corresponding monitoring software.Weeg-G DTU gas metering wireless data acquisition unit in addition to meet the two flow meter, a 4 ～20mA analog signal meter, a switch quantity input instrument, a switch quantity output meter, extension modules with standard MODBUS, also can be connected with four or more flow meter and related equipment, which makes data acquisition and hazardous location remote safer, simpler, more economical.This instrument is mainly to Weeg-G DTU related parameters and performance test, so as to meet the requirements prescribed technology. Which contains the switch input test, switch output test, analog input test, three kinds of communication test, the working voltage of DTU and temperature test. And through computer software acquisition test data, display the numerical curve of voltage, current and temperature. And the data is correct and error alarm.