組合式大功率地—井發(fā)射系統(tǒng)電流記錄器的研制
發(fā)布時間：2018-11-15 11:41
【摘要】：組合式大功率地-井發(fā)射系統(tǒng)電流記錄器是組合式大功率多功能電磁發(fā)射系統(tǒng)的子系統(tǒng)部分,主要完成對發(fā)射機的電流信號進行采集記錄,為了準確記錄電流信息,需要對發(fā)射電流進行32k Hz和40MHz獨立采樣,32k Hz采樣記錄電流和電壓的波形信息,40MHz采樣記錄電流和電壓信號的邊沿信息,同時需要保證電流和電壓的采樣精度,采集的時間同步性和低時間漂移特性。電流記錄傳感器以非接觸的方式對發(fā)射極電流和電壓信號進行采樣,操作者通過無線網(wǎng)絡進行采集控制和數(shù)據(jù)傳輸,同時將高低速兩個采樣的數(shù)據(jù)生成文件并存儲在SD卡中,文件中除了包含數(shù)據(jù)信息外還需要加入時間信息,滿足后期數(shù)據(jù)處理的需要。系統(tǒng)設計為了解決大電流、大電壓,高低速數(shù)據(jù)同步采集和高精度、低時間漂移的問題,對電路各個模塊等都進行了調研和方案評估,首先傳感器是系統(tǒng)是系統(tǒng)性能指標的前提,除了滿足基本的指標外選用的傳感器可集成性高、安全可靠。ADC電路選擇了TI和ADI兩家公司生產的數(shù)模轉換芯片,他們的性能高,方便設計,不需要復雜的外圍器件。主控電路采用FPGA+ARM的組合電路,結合FPGA對快速信號處理的優(yōu)勢和ARM豐富的片上接口資源,可以節(jié)省我們的設計周期,提高系統(tǒng)的性能。電流記錄器還以OCXO設計時鐘電路,目的是為整個采集過程提供穩(wěn)定可靠的時鐘源,提高數(shù)據(jù)采集的精度,降低系統(tǒng)的時間漂移特性。最終設計了由前端高低速電壓傳感器,高低速電流傳感器,高低速ADC采集電路,電源電路,時鐘電路,FPGA-ARM核心控制電路,WIFI控制模塊,接口電路,以及Surface Pro等硬件設備組成的組合式大功率地-井發(fā)射系統(tǒng)電流記錄器,電流記錄器軟件部分利用MFC基礎類庫編寫完成,主要通過網(wǎng)絡通信完成對地-井發(fā)射機的發(fā)射電流及電壓進行控制、實時采集、存儲、顯示和回放,電流記錄器完成了系統(tǒng)整體的組裝和調試,并進行了基本性能的測試,完成了設計需求。
[Abstract]:The combined high-power ground-well launching system current recorder is the subsystem of the combined high-power multi-function electromagnetic emission system. It mainly collects and records the current signal of the transmitter, in order to record the current information accurately, We need 32 k Hz and 40MHz independent sampling to transmit current, 32k Hz sampling to record the waveform information of current and voltage, 40MHz sampling to record the edge information of current and voltage signal, and to ensure the sampling accuracy of current and voltage. The characteristics of time synchronization and low time drift are obtained. The current recording sensor samples the emitter current and voltage signals in a non-contact manner. The operator collects, controls and transmits the data through the wireless network. At the same time, the data of the high and low speed samples are generated and stored in the SD card. Besides data information, time information should be added to the file to meet the needs of later data processing. In order to solve the problems of high current, high voltage, high low speed data synchronous acquisition and high precision and low time drift, the circuit modules are investigated and evaluated. First of all, the sensor is the premise of the system performance index, besides meeting the basic index, the sensor selected is highly integrated, safe and reliable. The ADC circuit selects the digital-to-analog conversion chip produced by TI and ADI, and their performance is high. Convenient design, no need for complex peripheral devices. The main control circuit adopts the combination circuit of FPGA ARM, combined with the advantages of FPGA in fast signal processing and the abundant on-chip interface resources of ARM, which can save our design cycle and improve the performance of the system. The current recorder also uses OCXO to design the clock circuit, which aims to provide a stable and reliable clock source for the whole acquisition process, improve the accuracy of data acquisition, and reduce the time drift characteristics of the system. Finally, the high and low speed voltage sensor, high low speed current sensor, high and low speed ADC acquisition circuit, power supply circuit, clock circuit, FPGA-ARM core control circuit, WIFI control module, interface circuit are designed. And the combined high-power ground-well launching system current recorder composed of Surface Pro and other hardware equipment. The software part of the current recorder is programmed by the MFC basic class library. The transmission current and voltage of the ground-well transmitter are controlled by network communication, the real-time acquisition, storage, display and playback, and the current recorder completes the whole assembly and debugging of the system, and the basic performance of the system is tested. The design requirements are fulfilled.
【學位授予單位】：中國地質大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.325
本文編號：2333209
[Abstract]:The combined high-power ground-well launching system current recorder is the subsystem of the combined high-power multi-function electromagnetic emission system. It mainly collects and records the current signal of the transmitter, in order to record the current information accurately, We need 32 k Hz and 40MHz independent sampling to transmit current, 32k Hz sampling to record the waveform information of current and voltage, 40MHz sampling to record the edge information of current and voltage signal, and to ensure the sampling accuracy of current and voltage. The characteristics of time synchronization and low time drift are obtained. The current recording sensor samples the emitter current and voltage signals in a non-contact manner. The operator collects, controls and transmits the data through the wireless network. At the same time, the data of the high and low speed samples are generated and stored in the SD card. Besides data information, time information should be added to the file to meet the needs of later data processing. In order to solve the problems of high current, high voltage, high low speed data synchronous acquisition and high precision and low time drift, the circuit modules are investigated and evaluated. First of all, the sensor is the premise of the system performance index, besides meeting the basic index, the sensor selected is highly integrated, safe and reliable. The ADC circuit selects the digital-to-analog conversion chip produced by TI and ADI, and their performance is high. Convenient design, no need for complex peripheral devices. The main control circuit adopts the combination circuit of FPGA ARM, combined with the advantages of FPGA in fast signal processing and the abundant on-chip interface resources of ARM, which can save our design cycle and improve the performance of the system. The current recorder also uses OCXO to design the clock circuit, which aims to provide a stable and reliable clock source for the whole acquisition process, improve the accuracy of data acquisition, and reduce the time drift characteristics of the system. Finally, the high and low speed voltage sensor, high low speed current sensor, high and low speed ADC acquisition circuit, power supply circuit, clock circuit, FPGA-ARM core control circuit, WIFI control module, interface circuit are designed. And the combined high-power ground-well launching system current recorder composed of Surface Pro and other hardware equipment. The software part of the current recorder is programmed by the MFC basic class library. The transmission current and voltage of the ground-well transmitter are controlled by network communication, the real-time acquisition, storage, display and playback, and the current recorder completes the whole assembly and debugging of the system, and the basic performance of the system is tested. The design requirements are fulfilled.
【學位授予單位】：中國地質大學(北京)
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：P631.325
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