助老助殘移動機器人手勢交互控制研究
本文選題:智能移動輪椅 + 手勢交互; 參考:《南京郵電大學》2017年碩士論文
【摘要】:隨著醫(yī)療技術(shù)與科研水平的突破,智能助老助殘移動服務(wù)機器人為行動不便的殘障人士提供了出行上的便利。對于老年人尤其是殘障人士在使用輪椅時,輪椅的人機交互設(shè)計就顯得十分之關(guān)鍵。手勢交互的實時性、穩(wěn)定性與易學性深刻地影響到用戶的使用體驗。本文從這個問題出發(fā)設(shè)計出一種基于Kinect攝像頭的在智能移動輪椅上使用的手勢交互控制方法以用來可靠、實時地用手部動作控制輪椅運行。本文的主要研究內(nèi)容與成果如下:(1)依據(jù)手勢識別技術(shù)的基礎(chǔ)理論與方法,在實驗平臺的硬件結(jié)構(gòu)框架設(shè)計與輪椅驅(qū)動控制設(shè)計背景下,首先對用戶的手勢交互展開需求分析工作,其次以需求為綱設(shè)計出一種虛擬手柄手勢交互方法,此方法模擬了實體的操縱連桿,在手部處于不同空間位置時給定相應(yīng)的行動速度和轉(zhuǎn)角數(shù)據(jù),同時虛擬手柄的控制過程使用了圖形化界面進行的實時顯示。(2)在手勢交互控制環(huán)節(jié)的第一步,應(yīng)用Kinect攝像頭對手勢分割與手勢跟蹤問題進行了研究。在手勢分割部分,分析基于高斯膚色模型手勢分割方法的不足,設(shè)計出基于深度信息與膚色信息分割手勢的方法且進行實驗。手勢跟蹤環(huán)節(jié)使用Camshift算法與Kalman濾波兩者結(jié)合的跟蹤算法,收集視頻圖像中的手部坐標位置效果良好。(3)在手勢交互控制環(huán)節(jié)的第二步,先進行實現(xiàn)手勢空間坐標轉(zhuǎn)換與虛擬手柄機制設(shè)定工作;然后對本手勢交互控制系統(tǒng)進行模糊控制需求分析、進行模糊控制器設(shè)計。完成應(yīng)用模糊控制對虛擬手柄進行坐標置位控制的工作。(4)搭建智能移動輪椅實驗平臺,在不同實際場景下進行手勢獲取干擾性實驗和手勢控制智能輪椅按指定路線運行的實驗。重點分析各類測試結(jié)果,檢測手勢交互控制方法在穩(wěn)定性和平滑性是否滿足設(shè)計要求。通過實驗證明智能輪椅經(jīng)模糊置位控制在運行平滑性和按指定路線運行能力上基本達到要求。
[Abstract]:With the breakthrough of medical technology and scientific research, the mobile robot provides mobility convenience for the disabled. When the elderly, especially the disabled, use wheelchairs, the man-machine interaction design of wheelchairs is very important. The real-time, stability and easiness of gesture interaction deeply affect the user's experience. In this paper, a Kinect camera based hand gesture interactive control method for intelligent mobile wheelchair is designed to control the wheelchair in real time and reliably. The main contents and results of this paper are as follows: (1) based on the basic theory and method of gesture recognition technology, under the background of hardware frame design and wheelchair drive control design of the experimental platform, First, the user's gesture interaction is analyzed, and then a virtual handle gesture interaction method is designed based on the requirements. This method simulates the control link of the entity. When the hand is in different space position, the corresponding speed and angle data are given, and the control process of the virtual handle uses the real-time display of the graphical interface. Kinect camera is used to study gesture segmentation and gesture tracking. In the part of hand gesture segmentation, the deficiency of gesture segmentation method based on Gao Si skin color model is analyzed, and the method based on depth information and skin color information is designed and tested. In hand gesture tracking, the tracking algorithm which combines Camshift algorithm and Kalman filter is used to collect the hand coordinate position in video image with good effect. Firstly, the spatial coordinate transformation of gesture and the setting of virtual handle mechanism are carried out, and then the fuzzy control requirement of the gesture interactive control system is analyzed, and the fuzzy controller is designed. The experiment platform of intelligent mobile wheelchair is constructed by using fuzzy control to control the coordinate position of the virtual handle. The experiments of gesture acquisition interference and gesture control intelligent wheelchair running according to the specified route are carried out in different actual scenes. Analysis of all kinds of test results to detect the stability and smoothness of gesture interaction control methods meet the design requirements. It is proved by experiments that the running smoothness and the ability of running according to the specified route can be basically achieved by the fuzzy position control of the intelligent wheelchair.
【學位授予單位】:南京郵電大學
【學位級別】:碩士
【學位授予年份】:2017
【分類號】:TP391.41;TP242
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