A Portable Wireless DAQ System for Gaseous Detectors  

作　　者：Luciano Capasso Paolo Branchini Antonio Budano Giovanni Corradi Wolfango Plastino Diego Tagnani 

机构地区：[1]INFN Sezione Rorna Tre, Roma 00146, Italy [2]Mathematics and Physics Department, University "Roma Tre ", Roma 00146, Italy [3]INFN Laboratori Nazionali di Frascati, Frascati 00044, Italy

出　　处：《Journal of Electrical Engineering》2014年第4期153-159,共7页电气工程（英文版）

摘　　要：A real-time wireless analog/digital electronic system for the data acquisition of a proportional counter detector is presented. Gaseous detectors working principle is based on the ionization of a gas due to a particle. The ions are then accelerated towards two electrodes and the read out signal is amplified, shaped and discriminated. It is then sent to the DAQ （data acquisition） electronics. The power supply system can be either the common 220 V source or a battery, whose autonomy is about 72 h during data acquisition. The analog electronics are made up of a high voltage generator for the detector＇s electrodes, an amplifier system, a shaper and a discriminator. The digital environment is based on an Arduino Mega-2560 board. A wireless modular shield is plugged on the board, in order to access the Arduino board via the 802.11b/g wireless protocol. Four temperature sensors and two pressure sensors are placed in the surroundings of the detector and they are connected to the system in order to read out environmental conditions. The software application, if required by the user, periodically acquires the data produced by the detector, formats them together with the sensor readings into a frame and sends the frame via UDP to an external server. The server plots the data on a webpage. During the data acquisition, the microcontroller continuously monitors the battery status, in order to safely stop the system in case of low battery. The DAQ system is controlled via a web page hosted inside Arduino, which acts like a server. Such page allows to set the detector working parameters （high voltage, discriminator threshold）, to start the data acquisition, to test the system via a debug panel and to read temperature and pressure sensors. Experimental results are presented.

关 键 词：DAQ electronics REAL-TIME gaseous detector Arduino. 

分 类 号：TM93[电气工程—电力电子与电力传动]