DENSO Develops Pedestrian Collision Detection Sensor

DENSO Develops Pedestrian Collision Detection Sensor 
- Realizing more precise collision detection - 
Kariya, Japan, Feb 15, 2013 - (JCN Newswire) -  DENSO Corporation has developed
a pedestrian collision detection sensor for the Pop-up Hood*. The new sensor
more precisely detects head-on collisions between vehicles and pedestrians,
enabling the Pop-up Hood to operate more accurately. 
"The new sensor technology uses a structure that can more accurately
detect head-on collisions, regardless of where the collision takes place on the
front bumper," said Hiroyuki Wakabayashi, executive director responsible
for DENSO's Information & Safety Systems Business Group. 
In the conventional Pop-up Hood, several acceleration sensors are installed
along the front bumper. However, detection by acceleration sensors varies
depending on which part of the front bumper collides with a pedestrian. 
DENSO's new sensor consists of two pressure sensors and a hollow
polyethylene housing that is installed across the entire front bumper and
conformed to the bumper's internal shape. In a head-on vehicle/pedestrian
collision, these pressure sensors precisely detect the increase in internal
pressure of the hollow housing as the bumper deforms, regardless of the
collision position on the front bumper. 
This sensor is installed on the Pop-up Hood of the Toyota Crown Hybrid
launched in Japan. 
DENSO strives to develop passive and active safety technologies that help
protect vehicle occupants and pedestrians, as well as prevent traffic
accidents. The company will continue working to realize a safe and reliable
automotive society for everyone. 
* Pop-up Hood: Pop-up Hood is designed to reduce pedestrian head injuries in a
pedestrian/ vehicle engine hood collision by creating a larger buffer space
between the hood and hard components, including the engine, under the hood.
When a pedestrian collides with the front bumper of a vehicle within a
predetermined speed range, the pedestrian collision detection sensor sends the
information to the airbag electric control unit to make the hood pop up at the
moment of the frontal collision. 
About Denso 
DENSO Corporation, headquartered in Kariya, Aichi prefecture, Japan, is a
leading global automotive supplier of advanced technology, systems and
components in the areas of thermal, powertrain control, electric, electronics
and information and safety. Its customers include all the world's major
carmakers. Worldwide, the company has more than 200 subsidiaries and affiliates
in 35 countries and regions (including Japan) and employs over 120,000 people.
Consolidated global sales for the fiscal year ending March 31, 2012, totaled
US$38.4 billion. Last fiscal year, DENSO spent 9.5 percent of its global
consolidated sales on research and development. DENSO common stock is traded on
the Tokyo and Nagoya stock exchanges. For more information, go to, or visit our media website at 
Sadayoshi Yokoyama, Goro Kanemasu
Tel: 81-566-25-5594
Fax: 81-566-25-4509 
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