Transponder allows cars to "see" pedestrians
January 21, 2014 // Christoph Hammerschmidt
Researchers of the Munich Technical University (TUM) have developed a method how driver assistance systems in vehicles can identify pedestrians and cyclists even if they are obscured by large obstacles. In the scheme devised by the Munich scientists, mobile handsets carried by the pedestrians and cyclists assume the function of a transponder.
The brake could be activated in this case because the pedestrian was equipped with a transponder, a combined of a radio receiver and transmitter which replies to certain specific signals - in this case to a pedestrian identification system in the approaching vehicle. To determine the exact location of the pedestrian, the system measures distance and direction of the person relatively to the car.
Within the Ko-TAG research project, TUM professor Erwin Biebl and his team devised a new approach to distance measurement which provides a result at an accuracy of a few centimetres and within microseconds. To trigger the measurement process, the car-based system transmits a unique code sequence. A transponder within reach modifies this bit pattern and returns it within a very precisely timing scheme.
To detect an approaching pedestrian, the driver needs to warned or the emergency brake has to be triggered even before the pedestrian steps onto the roadway. At the same time, the likelihood of an unnecessary full braking must be kept extremely low to allow car drivers to find the system reliable enough to use it. For this purpose, a very exact movement estimation is inevitable. Within their research, the TUM scientists were able to reduce the deviation to a few picoseconds. "Thus, we reach an accuracy of just a few centimetres in the distance measurement", said Biebl. "Along with the code-based method, this is the reason for the high performance".All news
Dark clouds over lighting business: Osram announces massive job cuts
July 30, 2014
Amidst the decline of conventional illuminants like incandescent bulbs and fluorescent tubes, lighting manufacturer Osram ...
Trillion Sensor Summit program set for Munich
IoT: sensor fusion or confusion?
Next-gen HiFi competition takes place in the car
Rohde & Schwarz acquires IT security company
Pure lithium anode promises more efficient rechargeable batteries
July 29, 2014
Researchers at Stanford University claim to have designed a pure lithium anode that could lead to the prospect of smaller, ...
Is a room temperature superconductor possible?
High-temperature superconductivity discovery paves way for energy superhighways
BMW invoke fast battery chargers to spark EV sales
- New Linear Regulators Solve Old Problems
- Testing GPS with a Simulator
- DSM presents: Select the best plastic for DDR4
- Dual 13A μModule Regulator with Digital Interface for Remote Monitoring & Control of Power
InterviewCEO interview: China, not Apple, is way to go, says mCube CEO
Ben Lee, CEO of MEMS startup mCube, explains why he wants to spend $37 million on being a supplier of sensors to Chinese ODMs and avoiding a design win with Apple or Samsung.
Filter WizardCheck out the Filter Wizard Series of articles by Filter Guru Kendall Castor-Perry which provide invaluable practical Analog Design guidelines.
Linear video channel
READER OFFERRead more
This month, Altium Ltd is offering EETimes Europe's readers the chance to win one TASKING VX-Toolset for ARM Cortex-M Premium Edition, normally licensed for 2.395 Euros, for ultra-rapid prototyping and code development around ARM Cortex-M based microcontrollers.
The VX-toolset for ARM is the first TASKING compiler suite to receive the Software Platform technology, which is seamlessly...Read more
December 15, 2011 | Texas instruments | 222901974
Unique Ser/Des technology supports encrypted video and audio content with full duplex bi-directional control channel over a single wire interface.