WeCare: Multi-modal Wireless Sensor Networks for Health Care and Independent Living

WiSe Research group owns a wireless sensor networks laboratory which includes a testbed for supporting independent living (IL). The testbed is designed as a smart living environment, similar to a house, including a bedroom, a living room and a kitchen. It is equipped with embedded cameras, i.e., video and audio sensors, RFID tags, biosensors and other sensors, such as light and motion sensors. Embedded cameras provide surveillance and information-rich descriptions of the activities of the residents. RFID tags are used for location tracking, i.e. in which room the residents are, and to activate the associated embedded cameras in the room. Biosensors, such as the ones measuring blood pressure or heart beat rate, monitor the health status and well-being of the residents. Complementary ambient sensors are used to provide contextual information about the environment. The testbed is connected to the Internet and GSM network which enables remote monitoring of the residence by the users or caregivers.


The solutions framework offered in the testbed is called “WeCare” and presentation slides are available here. Demonstrations videos are also available on toolset used and activity recognition solutions.

WeCare Services

The WeCare system can provide six fundamental services for Ambient Assisted Living at home:

  1. Activities of daily living monitoring: identifying and analyzing the daily activities of the residents. By monitoring the daily activities, abnormal conditions about the behaviors can be concluded and behavioral habits can be detected. For instance, if an elderly resident is sleeping more than usual this can be an indication for a possible illness.
  2. Medication intake monitoring: assisting users to monitor and remind medication intake. Confusing names and dozes can be problematic especially for the elderly that have to take many medications and such a service can provide valuable assistance.
  3. Medical status monitoring: provide comprehensive health status information of the users, including ECG, heart rate, blood pressure, skin temperature, oxygen saturation, etc.
  4. Fall and movement detection (using inertial sensors and multi-modal detection): for users who are susceptible to sudden falls. Falls are identified as a major health risk for the elderly and a major obstacle to independent living and such a service is a major part of a service architecture for independent living scenarios.
  5. Misplaced object tracking: associated with monitoring misplaced objects and can be considered as a “memory assistant” since memory impairments become common as people age. A main problem for the elderly is locating frequently-used, common objects such as keys, mobile phones and an “object finding service” can provide assistance in elderly people’s day-to-day life.
  6. Location tracking: the objective is to assist users with gadgets that have tracking and/or navigation capabilities. This is very useful for instance for Alzheimer’s patients that frequently get lost. The location of the patient can be tracked and the family or the caregivers can be notified in real-time.

WeCare Environment

Figure 1 shows some current snapshots from the testbed.

Figure 2 shows a snapshot from the WeCare Interface.

Figure 3

TV interviews and News about WeCare in Turkish

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