本文選題：假肢接受腔 + 數(shù)據(jù)采集�。� 參考：《北京石油化工學院》2017年碩士論文

【摘要】：假肢接受腔是人工假體與患者殘肢之間的結(jié)合部件,擔負支撐和承力的功能,其設計的結(jié)構(gòu)合理性和制造的精度直接影響患者使用假體的舒適性和功能性。課題針對目前假肢接受腔舒適性測量方法存在問題,研發(fā)了一種能夠同時測量假肢接受腔內(nèi)殘肢壓力、溫度、濕度,以及接受腔運動狀態(tài)的假肢接受腔多參數(shù)舒適性測量系統(tǒng)。假肢接受腔舒適性測量系統(tǒng)由分布式壓力測量模塊、溫濕度測量模塊、運動狀態(tài)測量模塊、數(shù)據(jù)傳輸模塊、數(shù)據(jù)分析存儲模塊等部分組成。其中,壓力測量模塊和溫濕度測量模塊采用微小型傳感器,以分布式方式安裝在假肢接受腔內(nèi)壁。運動狀態(tài)測量模塊采用基于加速度傳感器的姿態(tài)測量單元,安裝于接受腔外壁用于獲取假肢接受腔的運動狀態(tài)信息。數(shù)據(jù)傳輸模塊具以無線方式將各傳感器數(shù)據(jù)傳送到數(shù)據(jù)分析存儲模塊,以圖形化方式顯示測量數(shù)據(jù)和分析結(jié)果。為盡量減小測量系統(tǒng)對假肢穿戴的影響,分布式壓力測量模塊選用薄膜式壓力傳感器FSR402。針對FSR402傳感器輸出信號特點,設計了電流/電壓轉(zhuǎn)換電路。基于STM32微處理單元設計了多傳感器數(shù)據(jù)采集模塊。該模塊一方面通過內(nèi)置多路AD采集多路壓力傳感器信號;另一方面,通過串口通訊的方式與上位PC機進行數(shù)據(jù)傳輸。溫度、濕度測量選用具有雙總線串口數(shù)據(jù)通訊方式的溫濕度一體式傳感器SHT15�；趩纹瑱CSTC89C52設計了溫濕度傳感器數(shù)據(jù)采集模塊。單片機通過串口通訊的方式對溫濕度傳感器進行配置和采集數(shù)據(jù),通過USB數(shù)據(jù)接口與上位PC機進行數(shù)據(jù)通訊。接受腔運動狀態(tài)的測量采用MTi傳感器。基于底層串口通訊協(xié)議,實現(xiàn)了傳感器配置和數(shù)據(jù)讀取,基于VRML技術(shù),在上位PC機界面中實現(xiàn)接受腔運動狀態(tài)的三維虛擬顯示。基于虛擬儀器技術(shù),應用LabVIEW軟件開發(fā)假肢接受腔多參數(shù)測量系統(tǒng)上位機軟件,該軟件可以實現(xiàn)對壓力、溫濕度及步態(tài)相關(guān)參數(shù)的采集。作為人機交互界面,可以實現(xiàn)數(shù)據(jù)顯示、分析、存儲等功能。初步完成的實驗室測試實驗表明,該測量系統(tǒng)可為假肢接受腔的舒適性評估提供數(shù)據(jù),進而為假肢接受腔的制作改進提供客觀依據(jù)。
[Abstract]:Prosthetic cavity is a joint part between prosthetic prosthesis and patient's residual limb, which has the function of supporting and bearing force. The rationality of design structure and the precision of manufacture directly affect the comfort and function of the prosthesis used by patients. In order to solve the problems in the current prosthetic cavity comfort measurement method, a multi-parameter comfort measurement system is developed, which can simultaneously measure the pressure, temperature, humidity and motion state of the prosthetic receiving cavity. The comfort measurement system of prosthetic receiving cavity is composed of distributed pressure measurement module, temperature and humidity measurement module, motion state measurement module, data transmission module, data analysis and storage module and so on. The pressure measurement module and the temperature and humidity measurement module adopt micro sensors and are installed in the inner wall of the prosthetic receiving cavity in a distributed manner. The motion state measurement module uses the attitude measurement unit based on the acceleration sensor and is installed on the external wall of the receiving cavity to obtain the motion state information of the prosthetic receiving cavity. The data transmission module transmits the sensor data to the data analysis storage module in a wireless manner, and displays the measurement data and the analysis result in a graphical manner. In order to minimize the influence of the measurement system on prosthetic wear, the distributed pressure measurement module uses a thin film pressure sensor FSR402. According to the characteristic of output signal of FSR402 sensor, the current / voltage conversion circuit is designed. A multisensor data acquisition module based on STM32 microprocessing unit is designed. On the one hand, the module collects multi-channel pressure sensor signals through built-in multi-channel AD; on the other hand, it transmits data to PC through serial communication. The temperature and humidity measurement adopts the temperature and humidity integrated sensor SHT 15 which has the double bus serial port data communication mode. The data acquisition module of temperature and humidity sensor is designed based on single chip computer STC89C52. The single chip computer configures and collects the data of temperature and humidity sensor by means of serial communication, and communicates with PC through USB data interface. MTI sensor was used to measure the motion state of the receiving cavity. Based on the bottom serial communication protocol, the sensor configuration and data reading are realized. Based on VRML technology, the three-dimensional virtual display of the motion state of the receiving cavity is realized in the upper PC interface. Based on the virtual instrument technology, LabVIEW software is used to develop the upper computer software for the multi-parameter measurement system of prosthetic receiving cavity. The software can collect the parameters of pressure, temperature and humidity and gait. As a man-machine interface, data display, analysis, storage and other functions can be realized. The experimental results show that the system can provide data for evaluating the comfort of prosthetic cavities and provide an objective basis for improving the fabrication of prosthetic cavities.
【學位授予單位】：北京石油化工學院
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：R496;TH789

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