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I. Overview
Since 2000, China has entered the ranks of an aging society. China’s population ranks first in society, and China’s aging population also ranks first in society. The speed of aging is fast, the number of elderly people has increased sharply, the aging of the population is ahead of social development, and the social pension function is weak. The “four-two-one” population structure is becoming more and more obvious, with a large number of empty-nest elderly people, left-behind elderly people appearing, and family care functions are becoming weaker. The above-mentioned problems are particularly prominent in my country’s population aging project. Therefore, it is even more inevitable to monitor the health of the elderly and prevent accidental loss. With the continuous development and maturity of the Internet of Things technology, its application fields involve all aspects.Internet of ThingsThe powerful technology and functions can meet the requirements for the positioning and monitoring of the elderly. Under such a development opportunity, in response to the objective needs of the positioning and monitoring of the elderly, the wireless device system and the life monitoring system for the elderly are specially developed for the positioning and monitoring of the elderly. Through specific application, it shows strong practicality and social value.
2. System advantages
At present, there are many technologies to realize personnel positioning, such as GPS positioning, mobile phone base station positioning,RFIDPositioning, WIFI positioning, etc. GPS positioning and mobile phone base station positioning need to be similar to mobile phone terminals, which is not easy to manage. Although the positioning function is good, it cannot be achieved in some indoor public places; ZigBee and WIFI use the same algorithm to achieve positioning, but the power consumption of WIFI equipment Too big, the device needs frequent battery replacement or charging, which affects the personnel positioning function and is inconvenient to manage; RFID and ZigBee, although the positioning algorithm is different, but under the premise of achieving the same positioning effect and density, the installation of RFID equipment The density will be much greater than that of Zigbee devices, and RFID uses wired transmission and requires wiring, and the amount of installation engineering is relatively large.
1. It can monitor users in real time;
2. It is very easy and comfortable to wear the wristband;
3. The data can be transformed into meaningful and controllable decisions;
4. Be able to collect information from end users and provide it to the health guardian and his relatives;
5. The product provides audio prompts and alarms;
6. Relying on wireless local area network, it can work wirelessly.
In summary, ZigBee technology has the advantages of low cost, low power consumption, reliable transmission, implementation complexity, and application suitability. It is also used for the function of wireless positioning system for personnel in public places in the current common centralized positioning technology.
Three, system architecture
Using the most advanced Zigbee wireless technology, combined with smart card, sensor and embedded system technology, a set of intelligent elderly positioning monitoring system combining software and hardware is designed and developed. The system uses the 2.4GISM free frequency band that does not need to be applied for, which meets the relevant national regulations for 2.4G channel wireless products. The background monitoring software integrates GIS (Geographic Information System), database, graphical interface and other technical applications, adopts modular design, and functional modules can be increased or decreased according to customer requirements.
System architecture diagram
Four, system composition
This system is designed in accordance with the standard three-bedroom and two-hall structure: a positioning route is installed in each area (room, living room, kitchen, bathroom, balcony) where the elderly moves, and each positioning route is communicated and transmitted through ZigBee wireless mode, and then communicated with the base station. The home broadband is connected to the server of the community control center. At the same time, wear a vital sign detection wristband for each elderly person. As long as the elderly are in their own residence, the system can detect the activity status of the lonely elderly and the current basic vital signs status of the elderly in real time, and display it on the computer interface of the control center. And make a backup.
1. B/S-based background operation software
software interface
2. ZC communication base station
3. ZED positioning node
4. ZR positioning card reader
5. MZED mobile node
MZED Mobile Tag (Vital Signs Detection Wristband)
Five, system function
1. Real-time positioning function
The system monitors the location of the elderly in real time through the GIS map, and can query the historical data of the elderly through the background database of the monitoring center, which is convenient for personnel to query the historical activity track of the elderly.
2. Bed monitoring function
Real-time monitoring of the monitor under the bed of the lonely elderly, through the pressure community monitoring center of the induction bed, you can know whether the elderly is resting in the bed, if the elderly leave the bed for too long at night (the specific time can be set, such as 5 minutes) exceeds the setting At the alarm time, the elderly bed monitor will immediately send an alarm to the community monitoring center through the Zigbee wireless network and notify the elderly guardian (children) via SMS, prompting the nursing staff to check whether there is an accident.
3. Vital signs detection wristband
Through the vital sign test wristband worn on the lonely elderly, the basic vital signs of the elderly are detected in real time. When the values exceed the set alarm value, the system immediately alarms and informs the elderly guardian via SMS, prompting the nursing staff to check whether they are in time There are unexpected circumstances.
4. Various data report generation
Through the computer background, you can query the health status data, personal information, and other effective information of an elderly person. And analyze and count all kinds of information.
Sixth, the application crowd
1. Location guardianship for the elderly in the community
2. Kindergarten personnel positioning management
3. Hospital staff positioning management
4. Factory personnel location management
5. Positioning management of security personnel
6. Positioning management of personnel in other public places
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