Li HAN, Shi-zan WANG, Jun WANG, et al. Real-time collection and storage of multi-sensor dynamic parameters[J]. Chinese journal of liquid crystals and displays, 2017, 32(5): 372-379.
DOI:
Li HAN, Shi-zan WANG, Jun WANG, et al. Real-time collection and storage of multi-sensor dynamic parameters[J]. Chinese journal of liquid crystals and displays, 2017, 32(5): 372-379. DOI: 10.3788/YJYXS20173205.0372.
Real-time collection and storage of multi-sensor dynamic parameters
In order to solve the problems that the existing data acquisition system cannot have many channels
high speed and real-time storage at the same time
a real-time collection and storage method of multi-sensor dynamic parameters based on FPGA and large-capacity flash was proposed. The system took FPGA as the core processor to control and read the analog-to-digital conversion chip
added check bytes after the conversion
realized the high-efficiency data interaction with the flash through the double FIFO buffers
and used data back-up to increase storage reliability
then it took free-running interfaces between double flash to improve data storage speed. Finally
the core processor communicated with host computer by USB ports to achieve high-speed data transfer. The experimental results show that the acquisition-frequency of system can reach 2 MHz
the rate of real-time storage can come to 50 MByte/s with one Flash and 100 MByte/s with double Flash. Under the condition of strong vibration dynamic testing
this system can reliably collect the output signal from the sensor with the absolute error within 1 mV and without error rate
YUAN Q S, QIAN S R. Design of dynamic monitoring system based on STM32[J]. Chinese Journal of Liquid Crystals and Displays, 2016, 31(7):680-685. (in Chinese)
WANG D W, LI J Q, WU S L, et al. Processor design for anti-jamming of satellite navigation based on FPGA[J]. Transactions of Beijing Institute of Technology, 2014, 34(3):299-303. (in Chinese)
DENG B W, LIU C H. Design of error injector based on FPGA for high-speed data[J]. Computer Engineering and Design, 2014, 35(11):3831-3836. (in Chinese)
YANG X Q, ZHAO H Y, WANG Z F. Design of a 6-channel real-time simultaneous data acquisition board with USB2.0 interface[J]. Electronics Optics & Control, 2008, 15(6):91-95. (in Chinese)
GAO B. A portable data acquisition system based on the FPGA and USB2.0[J]. Journal of University of Electronic Science and Technology of China, 2010, 39(S):61-64. (in Chinese)
CAO H, QIN Y Q, WANG C, et al. Two-wire IEPE accelerometer front signal conditioning circuit[J]. Instrument Technique and Sensor, 2012(11):160-162. (in Chinese)
CHEN Z K, PANG P, WANG F B, et al. Design on crane monitoring system based on piezoelectric acceleration sensor[J]. Transducer and Microsystem Technologies, 2014, 33(11):76-78. (in Chinese)
MA Y C, WANG W J, LI J M. The implementation of multi-channel data acquisition system based on FPGA and UART interface[J]. Fire Control & Command Control, 2010, 35(9):134-136, 139. (in Chinese)
SHAN H N, LIU W N, WANG J C, et al. Data fusion method in multi-sensors autonomous tracking[J]. Chinese Journal of Liquid Crystals and Displays, 2016, 31(8):801-809. (in Chinese)