本文選題：水位測量　切入點：傳感器　出處：《北方工業(yè)大學》2017年碩士論文

【摘要】：遠程測控智能閘是一款國內(nèi)自主研發(fā)的灌區(qū)調(diào)水和水域管理信息化的產(chǎn)品,該閘門基于自動化閘門控制系統(tǒng)融合了物聯(lián)網(wǎng)技術(shù),實現(xiàn)了閘門的自動控制,分水量的精確測量。除此之外,智能閘還利用以太網(wǎng)和無線互聯(lián)等技術(shù)實現(xiàn)了流域內(nèi)閘門的協(xié)同控制。遠程自動計量閘設(shè)計極大程度上提升了水域水資源的利用率和水域管理信息化水平。目前,該閘門在山西內(nèi)蒙古等地的灌區(qū)取得了廣泛的應(yīng)用。在智能閘項目中,閘前與閘后的液位對于閘門的啟閉以及地區(qū)的供水量計算起著關(guān)鍵的作用。隨著測控系統(tǒng)精度越來越高對傳感器參數(shù)的要求也越來越高。目前,國內(nèi)的液位傳感器仍存在著一定的不足,并且針對野外的智能閘使用的就更少了。因此,開發(fā)了一種面向智能閘使用的投入式水位計。論文主要研究內(nèi)容是解決使用在智能閘上的常見投入式液位計所存在的問題,設(shè)計了機械部分、硬件電路、軟件部分以及補償算法。具體內(nèi)容有一下幾個方面:(1)機械機構(gòu)設(shè)計:結(jié)合投入式液位傳感器的工作空間大小以及密封需求,利用機械設(shè)計軟件solidworks設(shè)計出該傳感器的機械結(jié)構(gòu)部分,設(shè)計時將投入式液位計易發(fā)生密封失效的薄弱環(huán)節(jié)重點考慮。(2)硬件電路設(shè)計:本設(shè)計用Altium Designer 16完成硬件電路的設(shè)計,硬件電路以STM32F100CBT6為處理芯片。該硬件電路包括+5V、-5V和+3.3V電源電路,基于儀表放大器AD8639的精確放大電路,RS485通訊模塊等構(gòu)成。(3)軟件部分設(shè)計:利用軟件開發(fā)平臺Keil5.0進行傳感器內(nèi)部程序的設(shè)計,程序?qū)崿F(xiàn)信號的采集、濾波、補償。為減少傳感器的誤差提升傳感器的精度,對采集到的信號進行防脈沖干擾平均值濾波和BP神經(jīng)網(wǎng)絡(luò)的溫度補償。(4)搭建實驗平臺:通過搭建實驗平臺,實現(xiàn)對設(shè)計的投入式液位計進行密封性能、精度、線性度的測試,并對結(jié)果進行了分析。實驗結(jié)果表明,本設(shè)計解決了之前使用傳感器所存在的密封問題,提升傳感器的精度和穩(wěn)定性,能夠滿足智能閘測量水位使用。
[Abstract]:Remote monitoring and control intelligent gate is a kind of water diversion and water area management information product developed by our country. The gate is based on the automatic gate control system, which integrates the technology of Internet of things and realizes the automatic control of the gate. Accurate measurement of water distribution. In addition, The intelligent gate also realizes the cooperative control of the gate in the watershed by using the technology of Ethernet and wireless interconnection. The design of remote automatic metering gate greatly improves the utilization rate of water resources and the level of water management information. At present, The gate has been widely used in irrigation areas such as Shanxi and Inner Mongolia. The liquid level before and after the gate plays a key role in the gate opening and closing and the calculation of water supply in the area. With the increasing accuracy of the measurement and control system, the requirements of the sensor parameters are becoming higher and higher. There are still some deficiencies in domestic liquid level sensors, and the use of intelligent gates in the field is even less. An input water level meter for intelligent gate is developed in this paper. The main research content of this paper is to solve the problems existing in the common input liquid level meter used in intelligent gate, and design the mechanical part and hardware circuit. Software part and compensation algorithm. There are several aspects of the mechanical mechanism design: combined with the size of the workspace of the input liquid level sensor and sealing requirements, The mechanical structure of the sensor is designed by using the mechanical design software solidworks. The weak link of the input-type liquid level meter which is prone to seal failure is considered emphatically in the design. The hardware circuit is designed with Altium Designer 16. STM32F100CBT6 is used as the processing chip in the hardware circuit. The hardware circuit includes 5V -5V and 3.3V power supply circuit. The software design of the precise amplifier circuit RS485 communication module based on instrument amplifier AD8639 is as follows: the software development platform Keil5.0 is used to design the internal program of the sensor, and the program realizes the signal acquisition and filtering. In order to reduce the error of the sensor and improve the accuracy of the sensor, the experimental platform is built by filtering the average value of anti-pulse interference and the temperature compensation of BP neural network. The sealing performance, precision and linearity of the designed input level gauge are tested, and the results are analyzed. The experimental results show that the design solves the sealing problem existing in the previous use of the sensor. The accuracy and stability of the sensor can be improved to meet the use of intelligent sluice to measure the water level.
【學位授予單位】：北方工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：TV66

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本文編號：1681389