Denso develops higher performance radar
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Denso Corp has developed a new and higher-performing millimeter-wave radar that has a longer and wider detection range, which helps improve the responsiveness of an active safety technology, such as Pre-crash Safety (PCS) and Adaptive Cruise Control (ACC) systems.
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Denso’s new multi-zone radar is significantly lower in cost due to an improved material selection and also is the comparable size as the company’s previous model. The new millimeter-wave radar system is available as a factory option on the Mazda6, which launched in North America, Japan, Europe and other regions this past fall.
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“The longer detection range enables ACC-equipped vehicles to maintain a safe and constant distance to the vehicles in front of them – even when traveling at higher speeds,” said Hiroyuki Wakabayashi, executive director responsible for Denso’s Information and Safety Systems Business Group. “The radar’s wider-angle detection range allows the vehicle to respond more quickly and appropriately to other vehicles that might unexpectedly pull in front of you, and other dangers in curves and intersections.”
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Denso’s new radar has a detection distance of 205 meters and a +/-18 degrees detection radius within a distance of 35 meters from the vehicle. This is compared to 151 meters and +/-10 degrees in the conventional product.
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To achieve a longer detection distance, Denso improved the electronic circuit design in a way that reduces electromagnetic interference that could limit the receiver’s detection of reflected radio waves. This allows the sensor to have an enhanced receiving ability for objects ahead at a longer distance. Also, by better positioning the receiving antenna, the radar has a wider detection angle, which improves system responsiveness.
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In addition, to improve manufacturing efficiency, a motor was installed in the sensor to automatically adjust the antenna’s axis, which was done by hand in the previous version.
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