高精度無源電阻發(fā)生器的研究
發(fā)布時間：2019-04-04 10:40
【摘要】：電阻發(fā)生器作為儀器儀表校準(zhǔn)、電路測試等領(lǐng)域的重要基準(zhǔn)源,廣泛應(yīng)用于汽車及航空儀表調(diào)校、萬用表的阻抗測試以及電子電路調(diào)試等場合。目前,電阻發(fā)生技術(shù)主要包括有源和無源兩種。其中,有源電阻發(fā)生技術(shù)功耗大且易干擾外部電路,因而在小功率儀表檢測應(yīng)用場合,更多地采用無源電阻發(fā)生技術(shù),其原理簡單易于實現(xiàn),但無源電阻發(fā)生器在輸出精度和穩(wěn)定性方面尚存在不足。因此,對高精度無源電阻發(fā)生器的研究是亟需解決的問題。針對以上問題,本文提出一種高精度無源電阻發(fā)生器的研究。系統(tǒng)以ARM作為主控單元控制繼電器切換實現(xiàn)無源電阻輸出,通過與高精度萬用表通信完成系統(tǒng)校準(zhǔn)功能,并采用LCD顯示模塊和觸摸轉(zhuǎn)換芯片實現(xiàn)軟件界面顯示、用戶操作的識別和響應(yīng)功能。通過分析影響系統(tǒng)輸出性能的硬件因素及其影響規(guī)律,采用模擬實際電阻輸出的方法,確定各影響因素綜合作用下電阻組合與其實際輸出電阻值的定量關(guān)系,建立電阻輸出模擬方程;分別采用廣度優(yōu)先搜索算法和分支定界算法對模擬方程進行求解,獲取實際輸出值最接近設(shè)定電阻值的最優(yōu)電阻組合,通過對兩種算法時間復(fù)雜度的對比分析,確定廣度優(yōu)先搜索算法作為最優(yōu)電阻組合求解算法;基于GUI圖形界面庫開發(fā)下位機軟件,通過人機交互單元識別并響應(yīng)用戶操作,完成下位機軟件對電阻發(fā)生器的控制功能;基于Visual Studio2010開發(fā)環(huán)境,采用C#語言進行上位機軟件設(shè)計,通過USB HID通信協(xié)議,完成上位機軟件與電阻發(fā)生器的信息交互,從而通過上位機或下位機等兩種方式實現(xiàn)無源電阻輸出、系統(tǒng)校準(zhǔn)、信息監(jiān)控等功能,滿足用戶對電阻發(fā)生器的控制需求,達(dá)到良好的人機交互性能。通過無源電阻發(fā)生器的性能測試,實驗結(jié)果表明:系統(tǒng)在實現(xiàn)1.0?~20 k?的輸出范圍、0.1?分辨力(1 k?以內(nèi),1 k?以上分辨力為1?)的技術(shù)指標(biāo)下,在1.0?~11.0?輸出范圍內(nèi),系統(tǒng)輸出最大相對誤差為2.4%,11.1?~12 k?輸出范圍內(nèi),系統(tǒng)輸出最大相對誤差為0.8%,12 k?~20 k?輸出范圍內(nèi),系統(tǒng)輸出最大相對誤差為0.029%,系統(tǒng)響應(yīng)時間優(yōu)于500ms;系統(tǒng)輸出值具有良好的重復(fù)性;且能夠有效減小器件老化對系統(tǒng)輸出準(zhǔn)確度的影響,具有一定的穩(wěn)定性。因此,該無源電阻發(fā)生器解決了現(xiàn)有無源電阻發(fā)生技術(shù)存在的輸出精度低和穩(wěn)定性差等問題,為高精度無源電阻輸出提供一種新方法,具有較高的工程應(yīng)用價值。
[Abstract]:As an important reference in the field of instrument calibration and circuit testing, resistance generator is widely used in automotive and aeronautical instrument adjustment, impedance test of multimeter and electronic circuit debugging and so on. At present, resistance generation technology mainly includes active and passive. Among them, active resistance generation technology has a large power consumption and is easy to interfere with external circuits. Therefore, passive resistance generation technology is more widely used in low power instrument detection applications, and its principle is simple and easy to realize. But the output precision and stability of passive resistance generator are still insufficient. Therefore, the research of high precision passive resistance generator is an urgent problem to be solved. In order to solve the above problems, a high precision passive resistance generator is proposed in this paper. The system uses ARM as the main control unit to control relay switch to realize passive resistance output. The system calibration function is completed by communicating with the high precision multimeter, and the software interface display is realized by using LCD display module and touch conversion chip. User action identification and response function. By analyzing the hardware factors affecting the output performance of the system and its influence rules, the quantitative relationship between the combination of the resistors and their actual output resistance values under the comprehensive action of each influence factor is determined by using the method of simulating the actual resistance output. The simulation equation of resistance output is established. The simulation equation is solved by breadth-first search algorithm and branch-bound algorithm respectively, and the optimal resistance combination with actual output value closest to the set resistance value is obtained, and the time complexity of the two algorithms is analyzed by comparing the time complexity of the two algorithms. Determine the breadth-first search algorithm as the optimal resistance combination algorithm; The software of lower computer is developed based on GUI graphic interface library. Through the identification and response of user operation by man-machine interaction unit, the control function of lower computer software to resistance generator is completed. Based on the Visual Studio2010 development environment, the upper computer software is designed with C # language. Through the communication protocol of USB HID, the information interaction between the upper computer software and the resistance generator is completed. So the passive resistance output, system calibration, information monitoring and other functions can be realized by the upper computer or the lower computer, which can meet the control requirements of the resistance generator and achieve good human-computer interaction performance. Through the performance test of the passive resistance generator, the experimental results show that the system is realized in the range of 1.0 ~ 20 km ~ (- 1). Output range, 0.1? Resolution (1 k? Within, 1 k? The above resolution is 1?) Under the technical index of 1.0? In the output range, the maximum relative error of the system output is 2.4%, 11.1 / 12k? Within the output range, the maximum relative error of the system output is 0.8%, and the maximum output error of the system is 12 kg / 20 kg? In the output range, the maximum relative error of the system output is 0.029%, the response time of the system is better than 500 Ms, and the output value of the system has good repeatability. And it can effectively reduce the influence of device aging on the system output accuracy, and has a certain stability. Therefore, the passive resistance generator solves the problems of low output precision and poor stability in the existing passive resistance generation technology, and provides a new method for high precision passive resistance output, which has high engineering application value.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM54
本文編號：2453733
[Abstract]:As an important reference in the field of instrument calibration and circuit testing, resistance generator is widely used in automotive and aeronautical instrument adjustment, impedance test of multimeter and electronic circuit debugging and so on. At present, resistance generation technology mainly includes active and passive. Among them, active resistance generation technology has a large power consumption and is easy to interfere with external circuits. Therefore, passive resistance generation technology is more widely used in low power instrument detection applications, and its principle is simple and easy to realize. But the output precision and stability of passive resistance generator are still insufficient. Therefore, the research of high precision passive resistance generator is an urgent problem to be solved. In order to solve the above problems, a high precision passive resistance generator is proposed in this paper. The system uses ARM as the main control unit to control relay switch to realize passive resistance output. The system calibration function is completed by communicating with the high precision multimeter, and the software interface display is realized by using LCD display module and touch conversion chip. User action identification and response function. By analyzing the hardware factors affecting the output performance of the system and its influence rules, the quantitative relationship between the combination of the resistors and their actual output resistance values under the comprehensive action of each influence factor is determined by using the method of simulating the actual resistance output. The simulation equation of resistance output is established. The simulation equation is solved by breadth-first search algorithm and branch-bound algorithm respectively, and the optimal resistance combination with actual output value closest to the set resistance value is obtained, and the time complexity of the two algorithms is analyzed by comparing the time complexity of the two algorithms. Determine the breadth-first search algorithm as the optimal resistance combination algorithm; The software of lower computer is developed based on GUI graphic interface library. Through the identification and response of user operation by man-machine interaction unit, the control function of lower computer software to resistance generator is completed. Based on the Visual Studio2010 development environment, the upper computer software is designed with C # language. Through the communication protocol of USB HID, the information interaction between the upper computer software and the resistance generator is completed. So the passive resistance output, system calibration, information monitoring and other functions can be realized by the upper computer or the lower computer, which can meet the control requirements of the resistance generator and achieve good human-computer interaction performance. Through the performance test of the passive resistance generator, the experimental results show that the system is realized in the range of 1.0 ~ 20 km ~ (- 1). Output range, 0.1? Resolution (1 k? Within, 1 k? The above resolution is 1?) Under the technical index of 1.0? In the output range, the maximum relative error of the system output is 2.4%, 11.1 / 12k? Within the output range, the maximum relative error of the system output is 0.8%, and the maximum output error of the system is 12 kg / 20 kg? In the output range, the maximum relative error of the system output is 0.029%, the response time of the system is better than 500 Ms, and the output value of the system has good repeatability. And it can effectively reduce the influence of device aging on the system output accuracy, and has a certain stability. Therefore, the passive resistance generator solves the problems of low output precision and poor stability in the existing passive resistance generation technology, and provides a new method for high precision passive resistance output, which has high engineering application value.
【學(xué)位授予單位】：河南科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TM54
【參考文獻】
相關(guān)期刊論文 前10條
1 王淅蓉;劉要輝;彭建學(xué);;電子式程控電阻、電容通用模擬器設(shè)計[J];電子技術(shù);2015年07期
2 周奇文;鄧華;;程控電阻板卡系統(tǒng)設(shè)計[J];安徽電子信息職業(yè)技術(shù)學(xué)院學(xué)報;2015年01期
3 吳永明;林育生;;某型計程儀發(fā)送裝置測試系統(tǒng)設(shè)計與實現(xiàn)[J];船電技術(shù);2014年06期
4 楊偉東;張云龍;李莉;劉權(quán)震;師占群;;基于CAN總線通信的程控電阻系統(tǒng)設(shè)計[J];河北工業(yè)大學(xué)學(xué)報;2014年03期
5 童子權(quán);姜月明;任麗軍;李瑩瑩;;全電子式有源程控電阻器的設(shè)計[J];哈爾濱理工大學(xué)學(xué)報;2014年03期
6 楊本全;陳愛華;馬迎;葉鋒;;基于MSP430F149的便攜式智能直流電子負(fù)載系統(tǒng)設(shè)計[J];科技通報;2014年01期
7 劉懿俊;;開爾文四線測試方式在PCB測試機中的應(yīng)用[J];機電工程技術(shù);2013年09期
8 馬云紅;井哲;周德云;;一種任務(wù)分配問題的快速剪枝優(yōu)化算法[J];西北工業(yè)大學(xué)學(xué)報;2013年01期
9 李小文;劉偉良;劉麗君;;基于FPGA的可編程電阻裝置設(shè)計[J];鐵道機車車輛;2012年06期
10 劉彬;鐘明琛;;直流電子負(fù)載基本工作模式的測量不確定度評定[J];電子測量技術(shù);2012年08期
相關(guān)碩士學(xué)位論文 前4條
1 黃殿臣;全電子式有源可調(diào)電阻器的研制[D];哈爾濱理工大學(xué);2013年
2 馬揚昭;Ta及Ta-N薄膜的制備與電學(xué)性能研究[D];湖南大學(xué);2012年
3 王亞玲;能饋式交流電子模擬負(fù)載的研究[D];山東大學(xué);2009年
4 陳圓圓;PEMFC單體電池電壓檢測器及電子負(fù)載的設(shè)計開發(fā)[D];上海交通大學(xué);2008年
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