Design And Implementation On Hardware For The Elderly Escort System

With the rapid development of the global economy,embedded technology,as a new technology,has been widely used in different fields.Among them,the elderly care system based on embedded systems will have a broad market prospect in today's aging society.A young couple will not only raise their children,but also support four old people,so that young people can't always stay with the old and infirm old people.In order to help the elderly communicate with children in different places and solve the problem of children worried about the elderly,this paper designs an elderly care system based on embedded technologyThe elderly care system designed in this paper has functions such as real-time audio and video transmission,wireless Internet access,video monitoring,human-computer interaction,and one-click communication.The system as a bridge between the elderly and the children in different places,and satisfies the desire of the children to look after the elderly in real time.This paper mainly realizes the design and implementation of the hardware and driver of the elderly care system,the specific contents are as follows:1.This paper introduces the current situation and some key technologies involved in the elderly chaperone system,the elderly should not use complex terminal equipment to contact in real life,to accompany the terminal of the needs analysis,system overview,system design and platform.This paper introduces some key technologies involved in the terminal of the elderly chaperone system,and finally,according to the requirements of the project,the TMS320DM365 of TI company is defined as the core processor.2.With TMS320DM365 chip as the core processor,the design of the minimum system and peripheral circuit design according to the actual demand.The design of the video part of the CCD camera and PTZ monitoring module to achieve real-time video signal acquisition,and the video signal codec using TI TVP5151 chip,the voice part of elderly companion system is adopted TLV320AIC3101 chip as the sound card.In addition,human-computer interaction is achieved through LCD display,capacitive touch screen,independent buttons,etc.3.After comparison and analysis,the open source Linux system is used as the operating system.According to the hardware circuit module and system application requirements,each module driver is designed and developed on the basis of Linux kernel.This article mainly completes TVP5151 video processing front end,LCD display driver,AIC3101 based audio module driver,touch screen driver,RTC driver,button driver and other driver.4.The performance of each module of the elderly escort system was tested,and the test results were analyzed and summarized.