Application Analysis of RFID Technology in Elderly Health Care
Generally speaking, after entering the elderly, the physiological manifestations of slowing down metabolism, decreased resistance, and decreased physiological function are natural laws, so the cognitive decline of the elderly is difficult to reverse. Old people often forget the placement of items, forget to bring keys, forget the management of money, inconvenient movements, confusion, communication barriers, physical emergencies, and less diagnostic time. In order to solve these problems, many intelligent technology companies have developed application systems such as personnel positioning, emergency assistance, identity authentication, case management, item management, entrance and exit management, access control management, and consumer management. RFID systems for the elderly usually consist of four parts: smart labels, sensing devices, support modules, and application systems.
RFID smart tags can be divided into low frequency (Low Frequency), high frequency (High Frequency), ultra high frequency (Ultra High Frequency), and microwave (Microwave) according to the technical characteristics of different frequency bands. It can also be classified by passive RFID products, active RFID products, and semi-active RFID products. Semi-active RFID products, combined with the advantages of active RFID products and passive RFID products, enable the microwave 2.45G, 433M, WIFI to take advantage of the low frequency 125KHZ frequency trigger, and simultaneously combine a 13.56M high frequency card for The card should be the most extensive in the existing pension system. Semi-active RFID technology, also known as low-frequency activation trigger technology, uses low-frequency close-range precise positioning, microwave remote recognition and uploading data to solve the functions that pure active RFID and passive RFID cannot achieve. Simply put, it is to activate the positioning in close proximity, to identify and upload data from a distance. These labels are made into a wristband or pendant for easy wearing. ISO/IEC develops air interface protocols for five frequency bands, standardizing information interaction between RFID sensing devices and smart tags
RFID sensing equipment is often installed in the identification area, such as the entrance of the old apartment, the ceiling of the building, the pillars outside the old community, etc., to identify the smart tag information in a certain area, used for identity authentication and positioning, and will receive Information is transmitted to the background through the support system.
The support module and the application module mainly collect and analyze the sensing device and the tag data, further process, and improve the docking interface, which is used by people, and is the core of the elderly health care system. The wristband (pend pendant) label can intermittently send information to the sensing device in the area, and send real-time dynamics to its management center. Once the old person's information is not uploaded to the system management center, an alarm will be issued and the staff can view the old person in the previous The activity track of the stage, timely handling of emergencies. The RFID tag is basically equipped with an emergency call SOS function. When the elderly need help, the caregiver can quickly respond and implement help by pressing the GIS based on the emergency call button on the RFID tag. If the elderly are sick, the system can quickly transfer the elderly's case, health record and life record according to the situation, and provide necessary information to deal with this unexpected situation. Start the SOS alarm function, and activate the video surveillance system to control the camera in the corresponding area, switch to the specified direction, display the live screen, and provide accurate video information for the management personnel. Some elderly people need special care. The management personnel use the system to record and send it to all the caregivers. The caregiver reads the old man's label through the RFID sensor device that is worn by him, which is convenient for personalized service. In addition to the above applications, it also includes card functions, such as apartment access, community restaurants, entertainment and fitness venue identification, etc.
Nowadays, most of the RFID tags worn by the elderly are one-way uploading data, which is only for help, personnel positioning, and card function, and does not implement the active event reminding function. Passive UHF 900M inductive equipment prices remain high, active 2.4G electronic tag power supply problems and label itself are too heavy, lack of industry standards, excessive indoor radio frequency equipment, may lead to very crowded electromagnetic spectrum, multiple Inductive equipment frequently repeats reading tags, occupies communication channels and server resources, some RF signals may be absorbed by the human body or blocked by metal objects, how to assign alarm signals to appropriate medical institutions, the effects of wireless signal radiation on the elderly, etc. It is tricky and hinders the practical problems of RFID technology in the elderly health care application. So if the RFID tag can be integrated with healthy wearable devices, it will provide more help for the elderly.
The intelligent system combined with RFID technology provides an important support for the independent living of the elderly, and can help the elderly solve various problems in daily life and improve the self-confidence of the elderly living independently. However, all systems have some limitations. This requires the participation of professional large-scale technology companies and related industry experts. It is necessary to formulate equipment docking standards, reduce system costs, and require technical development and legal norms to further explore the application of RFID technology in the elderly. And research provides support.