In order to solve the problem that the old people cannot sit up by themselves due to accidental falls at home alone,an assistive sit-up device is designed and developed.First,the mechanical structure of the device is introduced,which mainly includes the lifting and walking mechanism,the seatback transfer mechanism and the seatback lifting mechanism.Then,the control system of the device is introduced,which mainly includes the design of speech recognition and walking control circuit,capacitance detection and lifting control circuit,seat back transmission and lifting control circuit,and system control process.Finally,the physical simulation and ex-perimental verification of the device are completed.The experimental results show that when an old people fall,the assistive device can first automatically move to his side through voice control.Then,with the help of the de-vice mechanism and under the control of voice and touch capacitive,the old people's body posture changes from"lying on the ground"to"sit on the ground",and then to"sitting off the ground",which satisfies the function of self-help assistance to sit up after a fall of the elderly living alone.
关键词
老人/跌倒/辅助坐起装置/语音识别/电容传感器
Key words
old people/fall/assistive sit-up device/voice recognition/capacitive sensor
维普
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