Enhancing Accelerometer-Based Activity Recognition with Capacitive Proximity Sensing
نویسندگان
چکیده
Activity recognition with a wearable accelerometer is a common investigated research topic and enables the detection of basic activities like sitting, walking or standing. Recent work in this area adds different sensing modalities to the inertial data to collect more information of the user’s environment to boost activity recognition for more challenging activities. This work presents a sensor prototype consisting of an accelerometer and a capacitive proximity sensor that senses the user’s activities based on the combined sensor values. We show that our proposed approach of combining both modalities significantly improves the recognition rate for detecting activities of daily living.
منابع مشابه
Design, fabrication, and testing of a meso-scale accelerometer made of spring steel
This paper reports a novel, low-cost, moderately sensitive, meso-scale accelerometer fabricated with spring steel foil and equipped with either a Hall Effect-based proximity sensor or a capacitive sensor. Since the sensitivity of a Hall Effect sensor is low, we attach a displacement-amplifying compliant mechanism (DaCM) to the proof-mass of the accelerometer to increase the overall sensitivity ...
متن کاملHoneyfish - a high resolution gesture recognition system based on capacitive proximity sensing
The recognition of gestures in free space using sensors that determine the proximity of a body mass based on electric field variance is a challenging research topic. Arrays of such capacitive proximity sensors allow the creation of novel user interaction systems based on recognizing presence and position of body parts and inferring performed gestures in three dimensions from that information. T...
متن کاملA Low-Noise Low-Offset Capacitive Sensing Amplifier for a 50- g= Hz Monolithic CMOS MEMS Accelerometer
This paper describes a CMOS capacitive sensing amplifier for a monolithic MEMS accelerometer fabricated by post-CMOS surface micromachining. This chopper stabilized amplifier employs capacitance matching with optimal transistor sizing to minimize sensor noise floor. Offsets due to sensor and circuit are reduced by ac offset calibration and dc offset cancellation based on a differential differen...
متن کاملA Post-CMOS Micromachined Lateral Accelerometer
In a post-complementary metal–oxide–semiconductor (CMOS) micromachining technology, the process flow enables the integration of micromechanical structures with conventional CMOS circuits which are low-cost and readily available. This paper presents a lateral capacitive sensing accelerometer fabricated in the post-CMOS process. Design advantages include electrically isolated multimetal routing o...
متن کاملCapacitive Proximity Sensing Using the FDC1004 (Rev. A)
Capacitive proximity sensing can be implemented in a wide variety of applications with the use of TI's FDC1004 and with the flexibility of the sensor design in many system environments. Not only are there advantages of using capacitive proximity sensing compared to alternative detection methods, there are also guidelines to follow to ensure maximum performance and stability with the sensing sys...
متن کامل