Fabian Höflinger

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Indoor localization has become an emergent topic in the past few years, comprising a large variety of mobile applications for the end user. Many application scenarios for mobile phones require a precision of better than one meter, however, today’s Wi-Fi based smart phones localization lacks on high precision. In this paper we present an acoustic indoor(More)
In this paper, we present a wireless micro inertial measurement unit (IMU) with the smallest volume and weight requirements available at the moment. With a size of 18mm x 16mm x 4mm, this IMU provides full control over the data of a three-axis accelerometer, a three-axis gyroscope, and a threeaxis magnetometer. It meets the design prerequisites of a(More)
We present an approach for the localization of passive receiver nodes in a communication network. The only source of information is the time when environmental sound or ultrasound signals are received. The discrete signals occur at unknown positions and times, but they can be distinguished. The clocks of the receivers are synchronized, so the time(More)
We present an approach for the localization of passive receiver nodes in a communication network. In our settings the positions of the nodes are unknown. The only source of information is the time when environmental sound or ultrasound signals are received. The discrete signals occur at unknown positions and times, but they can be distinguished. The clocks(More)
Localization based on the time difference of arrival (TDoA) has turned out to be a promising approach for indoor environments, especially in combination with innovative self-calibrating TDoA algorithms that eliminate the need to measure the positions of reference receivers. We consider the previously unsolved problem of locating a moving target receiver by(More)
In this paper we present our acoustic indoor­ localization system ASSIST (Acoustic Self-calibrating System for Indoor Smart phone Tracking) running on embedded ARM CPUs. The developed system uses acoustic signals beyond the audible range to localize COTS (commercial off-the-shelf) smart phones. The sound receivers installed with the infrastructure are(More)
This paper presents a simple, novel inertial sensor based indoor localization system which utilizes distance information between the top of the foot and the ground measured from ultrasonic rangefinder to detect the still-phase of the Zero Velocity Update (ZUPT) method. In this way, the computational consumption of the gyro-based ZUPT detection is avoided(More)
Automated home applications are to ease the use of technology and devices around the house. Most of the electronic devices, like shutters or entertainment products (Hifi, TV and even WiFi), are constantly in a standby mode, where they consume a considerable amount of energy. The standby mode is necessary to react to commands triggered by the user, but the(More)