本文選題：路面不平度 + 激光三角測距��； 參考：《南京農(nóng)業(yè)大學》2014年碩士論文

【摘要】：路面不平度是造成車輛振動的主要因素,直接影響到汽車的動力總成及乘坐的舒適可靠性。其次路面不平度還是土壤風蝕情況、含水量情況、土壤與輪胎耦合研究的重要依據(jù)。不論在硬路面或軟路面,研究路面不平度都有很大的意義。1990年以來,先進的激光路面平整度測試儀器克服原有裝置存在的不足,廣泛用于公路建設中。本文在設計非接觸式激光地面不平度測量儀時借鑒公路路面不平度儀的發(fā)展,開發(fā)基于激光三角測距法的自動化地面不平度測量儀器,為后續(xù)研究及分析提供測量數(shù)據(jù)基礎。論文首先分析了測量儀的測試原理,根據(jù)測試精度、控制、顯示、數(shù)據(jù)存儲等要求設計了地面不平度儀的總體設計方案。地面不平度儀是以用運動測試臺為測試基礎,以激光傳感器及基于LabVIEW的信號采集為核心,基于PC機與單片機的通信虛擬控制為控制手段的自動化測試儀器。其次,論文對儀器的運動測試臺架進行了分析。根據(jù)設計方案提出對機架的要求,包括重量、體積、運輸、安裝、調(diào)整、誤差等,并進行選型及選材；設計傳動方案,進行機架整體建模,確保方案可行性。針對運動臺架控制箱部分,根據(jù)運動要求選擇電機、驅動器及控制器,完成控制箱元器件接線并實現(xiàn)運動方案。再次,論文對儀器基于LabVIEW信號采集及虛擬控制部分設計進行闡述。根據(jù)設計要求編寫采集界面VI及程序框圖,完成采集信號的實時顯示和儲存�；贚abVIEW的虛擬儀器控制界面設計部分核心內(nèi)容是PC機與單片機的通信問題。在這部分內(nèi)容中設計了PC機上軟件LabVIEW中通信界面及程序框圖設計、通信硬件電路設計、單片機通信程序編寫等。針對設計好的控制界面文中詳細介紹了各部分功能及使用方法。最后,進行了樣機調(diào)試與測量實驗。在加工完成測試儀后,進行樣機的調(diào)試測量實驗,檢驗測試準確度,為實現(xiàn)測試儀的有效測量及測試精準度提供后續(xù)保證。
[Abstract]:Road roughness is the main factor that causes vehicle vibration, which directly affects the power assembly and comfort reliability of the vehicle. Secondly, road roughness is also the important basis of soil wind erosion, water content, soil and tire coupling research. It is of great significance to study the roughness of road surface whether on hard or soft pavement. Since 1990, the advanced laser testing instrument has been widely used in highway construction because of overcoming the shortcomings of the original equipment. In this paper, an automatic ground roughness measuring instrument based on laser triangulation is developed for reference to the development of highway pavement roughness meter in the design of non-contact laser ground roughness measuring instrument, which provides the data basis for further research and analysis. Firstly, the testing principle of the measuring instrument is analyzed, and the overall design scheme of the ground roughness meter is designed according to the requirements of test precision, control, display, data storage and so on. The ground roughness meter is an automatic testing instrument based on motion test bench, laser sensor and signal acquisition based on LabVIEW, and communication virtual control based on PC and single chip microcomputer. Secondly, the paper analyzes the motion test bench of the instrument. According to the design scheme, the paper puts forward the requirements for the frame, including weight, volume, transportation, installation, adjustment, error, and so on, and carries on the selection and selection of materials, designs the transmission scheme, carries on the overall modeling of the frame, and ensures the feasibility of the scheme. According to the motion requirements, the motor, driver and controller are selected to connect the components of the control box and realize the motion scheme. Thirdly, the paper expatiates the design of instrument based on LabVIEW signal acquisition and virtual control. According to the design requirements, the acquisition interface VI and the program block diagram are written to complete the real-time display and storage of the acquisition signal. The communication between PC and MCU is the core of the control interface design of virtual instrument based on LabVIEW. In this part, the communication interface and program block diagram of PC software LabVIEW, the design of communication hardware circuit, the programming of MCU communication program and so on are designed. According to the designed control interface, the functions and usage methods of each part are introduced in detail. Finally, the prototype debugging and measurement experiments are carried out. After processing the tester, the prototype is debugged and measured, and the accuracy of the test is tested, which provides a follow-up guarantee for the effective measurement and precision of the tester.
【學位授予單位】：南京農(nóng)業(yè)大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：U416.2

【參考文獻】

相關期刊論文 前1條

1 張紅濤,王三武,魯力,劉暢;51單片機和PC機串行通信系統(tǒng)設計[J];化工自動化及儀表;2005年04期

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本文編號：1966015