IOSR Journal of Electronics and Communication Engineering (IOSR-JECE) e-ISSN: 2278-2834,p- ISSN: 2278-8735.Volume 13, Issue 1, Ver. I (Jan.- Feb. 2018), PP 32-36 www.iosrjournals.org DOI: 10.9790/2834-1301013236 www.iosrjournals.org 32 | Page Wearable RFID Based Real Time Activity Recognition System .K Vinay Kumar, Dr K Prabhakara Rao Department of Electronics & Communication Engg B V Raju Institute of Technology NARSAPUR, Medak District Department of Electronics & Communication Engg B V Raju Institute of Technology NARSAPUR, Medak District Corresponding Author: .K Vinay Kumar Abstract: In the past couple of years, there is growing interest in passive UHF RFID technology. Activity recognition plays an important role in many applications. One of such applications is care of old people that are supported by activity recognition systems. In this paper a wearable radio frequency identification (RFID) system using passive tags which are smaller and more cost-effective to recognize human activities in real-time scenario are used. Backed up by a step-down transformer for power supply to the circuit, the tilt and fall detection sensors, walking and running activities can be traced out in this project. These RFID tags are arranged at the room premises and when a person enters a specific room, it alerts by special commands. We exploit RFID radio patterns using passive RFID tags to check the person’s position and his presence in a particular location. Keywords: Activity recognition, Wearable RFID, ARM7 TDMI --------------------------------------------------------------------------------------------------------------------------------------- Date of Submission: 05-01-2018 Date of acceptance: 30-01-2018 --------------------------------------------------------------------------------------------------------------------------------------- I. Introduction Elderly care is a critical application that is upheld by ongoing action acknowledgment frameworks. Here, the system utilizes passive tags which are without support and can be implanted into the garments to lessen the wearing and upkeep less efforts. Activity recognitionsystems have a vital part in numerous applications. One such critical application that involves much of interest is elderly care due to the increase in growing number of elderly people around the world. For the daily support of old age people with different degrees and types of impairments new applications are actively being developed. II. Literature survey In [1], Passive UHF RFID Tags are being used for the toll collection on highway for Automatic Vehicle Identification. Here the system is implemented by a connector loop and a RFID chip, with unique ID, is fixed in a card, which can be attached to and separated from the card holder. For operation, the card, with the connector loop and chip, has to be inserted to a card holder, where the antenna is set in inside the card holder. Two passive UHF RFID tags have been used here; they are Removable Windshield Tag and a thin-wire Vehicle Headlamp Tag. Both these designs are used for vehicle identification. In this method it occupies a marginal area and it is useful for the vehicle identification. There may be certain possibilities of tag uncertainty because during night time the head lamp of the vehicle will be in ON condition and it may lead to the heating of the tag and may not be possible to sense the ID of the vehicle. The read range is limited to a few meters and this can be further increased in nearby future. In [2] Radio Frequency Identification (RFID) technology is used by assigning an exclusive identifier to each product in the textile and laundry industry. The paper analyses the weak points of actual passive UHF RFID tags and proposes keys regarding the architecture and the materials used in construction of tags suitable for laundry applications. They should be washable and wearable, sturdiness enough to operate in harsh environments. But there is a drawback which is, there is a limit on washable cycles which may cause fade away of tag and also if the product is squeezed then there is also chance of breaking of the tag.In [3] for the body temperature observing, an on-board temperature sensor is installed in RFID label structure. The temperature sensor may exchange its flag specifically into label memory and being read by reader together. This can help user tracking of user health and the signal processing is done effectively. There are 3 layers, data extraction layer at bottom, to employ RFID devices and sensing devices, for tracking individual health record. The center layer is the framework incorporation layer, which utilizes structure and lattice innovation to create capacities, for example, benefits association, record stockpiling, and information examination to serve. It acts as link between two layers. The top layer is the application service layer, which, provides the user with demands such as health consultations such as medical reports, temperature etc., and provides the equivalent interactive services so that the overall system operation can be realized effectively.In [4] a different design of wearable radio frequency