In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition syst...In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition system. This is composed of a set of functional modules and a purpose-built bus. One of the modules operates as a master, collecting data from the other slave modules. It then sends the data to the back-end computer via Ethernet.In addition to the hardware, dedicated software has been designed and implemented. In this paper, we provide a detailed description of the architecture of the system, the data frame, and the software. The bus is the central part of the system. It can transmit data from the slave modules to the master at 33 MB/s. The frame used to transmit the data also ensures its integrity and monitors the hardware architecture. The client software is designed to process data in real time and store data on a hard disk for later analysis.展开更多
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...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.展开更多
The neutron Time Of Flight (nTOF) facility at CERN is a high flux spallation neutron source commissioned in Nov 2000 and APr 2001.For the commissioning phases an innovative multipurpose DAQ system was developed and us...The neutron Time Of Flight (nTOF) facility at CERN is a high flux spallation neutron source commissioned in Nov 2000 and APr 2001.For the commissioning phases an innovative multipurpose DAQ system was developed and used.This system is capable of handling high data rated(10Mb/s) with the use of the National Instruments PCI-VXI interface board to communicate with the VME crates.The graphical user interface is based on Java^TM and ROOT allowing immediate visualization of the data and providing a flexible way of creating configurations for various experimental setups.展开更多
Rainwater harvesting(RWH)systems have been the source of domestic water for many years and still becoming essential in many communities of developing countries.However,due to various reasons,there are several sources ...Rainwater harvesting(RWH)systems have been the source of domestic water for many years and still becoming essential in many communities of developing countries.However,due to various reasons,there are several sources of contamination in the rainwater cistern systems.Dissolved chemicals from the roofing,storage,and conveyance materials,together with the suspended particulate matter from the airborne,are examples of water contamination.In this work,the water quality monitoring system has been designed and implemented.Chemical and physical parameters of water samples were collected from three locations using a data acquisition(DAQ)system and rainwater quality was analyzed using Water Pollution Index(WPI).Results obtained from three locations have been presented.展开更多
This article describes the prototype of the read-out subsystem which will be subject to the BESIII data acquisition system. According to the purpose of the BESIII, the event rate will be about 4000 Hz and the data rat...This article describes the prototype of the read-out subsystem which will be subject to the BESIII data acquisition system. According to the purpose of the BESIII, the event rate will be about 4000 Hz and the data rate up to 50 Mbytes/sec after Level 1 trigger. The read-out subsystem consists of some read-out crates and a read-out computer whose function is to initialize the hardware, to collect the event data from the front-end electronics after Level 1 trigger, to transfer data fragments to the computer in online form through two levels of computer pre-processing and high-speed network transmission. In this model, the crate level read-out implementation is based on the commercial single board computer MVME5100 running the VxWorks operating system. The article outlines the structure of the crate level testing platform of hardware and software. It puts emphasis on the framework of the read-out test model, data process flow and test method at crate level. Especially, it enumerates the key technologies in the process of design and analyses the test results. In addition, results which summarize the performance of the single board computer from the data transferring aspects will be presented.展开更多
基金supported by the Fundamental Research Funds for the Central Universities of China(2015CDJXY)
文摘In order to satisfy the requirements of beam measurement in the heavy ion medical machine and other small nuclear physics experiments, we designed and built a nuclear instrumentation module-based data acquisition system. This is composed of a set of functional modules and a purpose-built bus. One of the modules operates as a master, collecting data from the other slave modules. It then sends the data to the back-end computer via Ethernet.In addition to the hardware, dedicated software has been designed and implemented. In this paper, we provide a detailed description of the architecture of the system, the data frame, and the software. The bus is the central part of the system. It can transmit data from the slave modules to the master at 33 MB/s. The frame used to transmit the data also ensures its integrity and monitors the hardware architecture. The client software is designed to process data in real time and store data on a hard disk for later analysis.
文摘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.
文摘The neutron Time Of Flight (nTOF) facility at CERN is a high flux spallation neutron source commissioned in Nov 2000 and APr 2001.For the commissioning phases an innovative multipurpose DAQ system was developed and used.This system is capable of handling high data rated(10Mb/s) with the use of the National Instruments PCI-VXI interface board to communicate with the VME crates.The graphical user interface is based on Java^TM and ROOT allowing immediate visualization of the data and providing a flexible way of creating configurations for various experimental setups.
文摘Rainwater harvesting(RWH)systems have been the source of domestic water for many years and still becoming essential in many communities of developing countries.However,due to various reasons,there are several sources of contamination in the rainwater cistern systems.Dissolved chemicals from the roofing,storage,and conveyance materials,together with the suspended particulate matter from the airborne,are examples of water contamination.In this work,the water quality monitoring system has been designed and implemented.Chemical and physical parameters of water samples were collected from three locations using a data acquisition(DAQ)system and rainwater quality was analyzed using Water Pollution Index(WPI).Results obtained from three locations have been presented.
基金The project supported by Beijing Electron Positron Collider (BEPCII) Upgrade Project
文摘This article describes the prototype of the read-out subsystem which will be subject to the BESIII data acquisition system. According to the purpose of the BESIII, the event rate will be about 4000 Hz and the data rate up to 50 Mbytes/sec after Level 1 trigger. The read-out subsystem consists of some read-out crates and a read-out computer whose function is to initialize the hardware, to collect the event data from the front-end electronics after Level 1 trigger, to transfer data fragments to the computer in online form through two levels of computer pre-processing and high-speed network transmission. In this model, the crate level read-out implementation is based on the commercial single board computer MVME5100 running the VxWorks operating system. The article outlines the structure of the crate level testing platform of hardware and software. It puts emphasis on the framework of the read-out test model, data process flow and test method at crate level. Especially, it enumerates the key technologies in the process of design and analyses the test results. In addition, results which summarize the performance of the single board computer from the data transferring aspects will be presented.
