本文關鍵詞： 路面平整度 uC/OS-II CAN TCP/IP 路面特征　出處：《江蘇科技大學》2015年碩士論文　論文類型：學位論文

【摘要】：路面平整度是公路及城市道路路面評價及路面施工驗收中的一個重要指標,直接反映了車輛行駛的舒適度、路面的安全性及使用狀態(tài),對路面的維修、養(yǎng)護及翻修等方面提供重要參考依據(jù),因此如何快速便捷的測量路面平整度已成為一個具有現(xiàn)實意義的課題。隨著嵌入式技術及傳感器技術的快速發(fā)展,非接觸式檢測法采集路面平整度已成為該領域的研究趨勢。因此,本文結合激光位移傳感器和加速度傳感器設計開發(fā)了一套基于ARM的路面平整度采集系統(tǒng)。本文構建了由激光位移傳感器、加速度傳感器、旋轉編碼器為主的路面平整度檢測系統(tǒng),在深入地研究了系統(tǒng)總體方案可行性的基礎上,設計了以飛思卡爾ARM Cortex-M4內核的MK60DN512ZVLQ10微處理器為主傳輸卡,以C8051F040單片機的傳感器采集卡;在研究CAN協(xié)議和TCP/IP協(xié)議的特點及實現(xiàn)原理的基礎上,開發(fā)了一種高效的嵌入式CAN轉以太網(wǎng)網(wǎng)關,移植實時操作系統(tǒng)u C/OS-II,實現(xiàn)多路傳感器數(shù)據(jù)的采集與傳輸;然后結合C#.NET設計了系統(tǒng)上位機界面,根據(jù)CAN數(shù)據(jù)幀格式制定了上位機與下位機通信協(xié)議,最后對系統(tǒng)試驗采集的數(shù)據(jù)進行擬合濾波,由垂直加速度二次積分得到的車體振動位移,用激光傳感器測得的路面高程減去該位移得到路面實際的高程,根據(jù)高程信號分析路面特征。測試結果表明,所設計的路面平整度檢測系統(tǒng)合理、可行,具有很好的實用價值。本文完成的主要內容包括:1.基于C8051F040的數(shù)據(jù)采集卡的設計;2.基于飛思卡爾K60的CAN轉以太網(wǎng)網(wǎng)關的設計;3.基于.NET平臺開發(fā)了一套針對下位機的上位機數(shù)據(jù)采集系統(tǒng);4.對試驗原始數(shù)據(jù)進行去噪處理并進行結果分析,依據(jù)國際道路平整度指數(shù)(IRI)來判斷路面的平整度等級,并驗證系統(tǒng)測量結果。
[Abstract]:Pavement smoothness is an important index in highway and urban road pavement evaluation and pavement construction acceptance, which directly reflects the comfort of the vehicle, the safety and service state of the road surface, and the maintenance of the road surface. Maintenance and renovation provide important reference basis, so how to measure pavement smoothness quickly and conveniently has become a practical topic. With the rapid development of embedded technology and sensor technology, Non-contact detection method has become the research trend in this field. In this paper, a road roughness acquisition system based on ARM is designed and developed based on laser displacement sensor and acceleration sensor. On the basis of deeply studying the feasibility of the overall scheme of the pavement flatness detection system based on rotary encoder, the paper designs a transmission card based on MK60DN512ZVLQ10 microprocessor based on ARM Cortex-M4 kernel and a sensor acquisition card based on C8051F040 single chip microcomputer. On the basis of studying the characteristics and realization principle of CAN protocol and TCP/IP protocol, an efficient embedded CAN to Ethernet gateway is developed, and the real-time operating system u C / OS-IIs is transplanted to realize the data acquisition and transmission of multiple sensors. Then the system upper computer interface is designed based on C#.NET, and the communication protocol between the upper computer and the lower computer is established according to the CAN data frame format. Finally, the data collected by the system test is fitted and filtered. The vibration displacement of the car body obtained from the quadratic integration of vertical acceleration is subtracted from the road height measured by laser sensor to obtain the actual height of the road surface. The road surface characteristics are analyzed according to the elevation signal. The test results show that, The designed pavement smoothness detection system is reasonable and feasible. The main contents of this paper include: 1. The design of data acquisition card based on C8051F040. The design of CAN to Ethernet gateway based on Freescale K60. The data acquisition system of the upper computer 4. The original data of the test are de-noised and the results are analyzed. According to the international road smoothness index (IRI), the pavement smoothness grade is judged, and the system measurement results are verified.
【學位授予單位】：江蘇科技大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：U416.2

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本文編號：1539577