The invention discloses a large aircraft cable fault positioning terminal based on alternate sampling. The fault positioning terminal comprises a pulse excitation generation module, an ADC alternate sampling module, an FPGA data parallel receiving module and an ESP32 main control module. The pulse excitation generation module is used for generating a fast edge pulse excitation signal; the ADC alternate sampling module is responsible for collecting echo signal data reflected by the pulse excitation signal at a fault point; the FPGA data parallel receiving module is responsible for receiving and caching result data converted by the ADC; the ESP32 main control module is responsible for receiving cache data sent by the FPGA, cleaning and compressing the data and finally sending the data to upper computer software through a wireless network. According to the large aircraft cable fault positioning terminal, an alternate sampling technology is adopted, a plurality of relatively low-speed ADCs alternately sample to be equivalent to a high sampling rate, the terminal sampling rate and the fault point echo signal capturing precision are improved, meanwhile, the design and manufacturing difficulty of a high-speed PCB is reduced, in addition, a data alternate transmission mode is adopted between the ADCs and a data FPGA platform, and the data transmission efficiency is improved. And the requirement on the data throughput rate of the FPGA platform is reduced.
本发明公开一种基于交替采样的大飞机电缆故障定位终端,所述的故障定位终端包含脉冲激励发生模块、ADC交替采样模块、FPGA数据并行接收模块和ESP32主控模块四部分;所述的脉冲激励发生模块用于生成快速边沿脉冲激励信号;所述的ADC交替采样模块负责采集脉冲激励信号在故障点反射的回波信号数据;所述的FPGA数据并行接收模块负责接收缓存ADC转换的结果数据;所述的ESP32主控模块负责接收FPGA发送的缓存数据并对数据进行清洗压缩最后通过无线网络发送至上位机软件。本发明大飞机电缆故障定位终端采用交替采样技术,由多片相对低速ADC交替采样以等效高采样速率,提高终端采样速率和故障点回波信号捕获精度的同时降低高速PCB设计制造难度,此外多片ADC与数据FPGA平台间采用数据交替传输方式,降低对FPGA平台的数据吞吐率需求。
Large aircraft cable fault positioning terminal based on alternate sampling
一种基于交替采样的大飞机电缆故障定位终端
2024-07-19
Patent
Electronic Resource
Chinese
IPC: | G01R Messen elektrischer Größen , MEASURING ELECTRIC VARIABLES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G05B Steuer- oder Regelsysteme allgemein , CONTROL OR REGULATING SYSTEMS IN GENERAL / G06F ELECTRIC DIGITAL DATA PROCESSING , Elektrische digitale Datenverarbeitung |
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