Abstract
This paper investigates the effect of vehicle front height lowering operation of precrash dipping nose (PCDN) on pedestrians. Although PCDN was developed for vehicle-vehicle side crashes, there is a possibility that the range sensor for crash detection will fail to distinguish a group of pedestrians from a side-faced vehicle. For simulation-based investigation, a vehicle model, an air spring with PCDN actuator, a pedestrian, and active hood system (AHS) were modeled. Two vehicle models were made for a sedan and a sport utility vehicle (SUV), respectively. In all crash situations (frontal crash without AHS, frontal crash with AHS, and side crash without AHS), a falsely operated PCDN is expected to cause worse pedestrian injury. As a conclusion, we insist that PCDN should incorporate a pedestrian-recognition capability into its crash detection system to reduce the improper activation of its actuator. In addition, as AHS showed a good performance even in improper activation, we propose a complementary method that activates AHS when PCDN is activated. It is noteworthy that the increasing importance of pedestrian protection seems to enforce even a system developed for vehicle-vehicle crashes to be investigated from the perspective of pedestrian safety.
| Original language | English |
|---|---|
| Article number | 4685982 |
| Pages (from-to) | 678-687 |
| Number of pages | 10 |
| Journal | IEEE Transactions on Intelligent Transportation Systems |
| Volume | 9 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2008 Dec 1 |
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All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Mechanical Engineering
- Computer Science Applications
Cite this
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Precrash dipping nose (PCDN) needs pedestrian recognition. / Jung, Ho Gi; Kwak, Byung Moon; Shim, Jeong Soo; Yoon, Pal Joo; Kim, Jaihie.
In: IEEE Transactions on Intelligent Transportation Systems, Vol. 9, No. 4, 4685982, 01.12.2008, p. 678-687.Research output: Contribution to journal › Article
TY - JOUR
T1 - Precrash dipping nose (PCDN) needs pedestrian recognition
AU - Jung, Ho Gi
AU - Kwak, Byung Moon
AU - Shim, Jeong Soo
AU - Yoon, Pal Joo
AU - Kim, Jaihie
PY - 2008/12/1
Y1 - 2008/12/1
N2 - This paper investigates the effect of vehicle front height lowering operation of precrash dipping nose (PCDN) on pedestrians. Although PCDN was developed for vehicle-vehicle side crashes, there is a possibility that the range sensor for crash detection will fail to distinguish a group of pedestrians from a side-faced vehicle. For simulation-based investigation, a vehicle model, an air spring with PCDN actuator, a pedestrian, and active hood system (AHS) were modeled. Two vehicle models were made for a sedan and a sport utility vehicle (SUV), respectively. In all crash situations (frontal crash without AHS, frontal crash with AHS, and side crash without AHS), a falsely operated PCDN is expected to cause worse pedestrian injury. As a conclusion, we insist that PCDN should incorporate a pedestrian-recognition capability into its crash detection system to reduce the improper activation of its actuator. In addition, as AHS showed a good performance even in improper activation, we propose a complementary method that activates AHS when PCDN is activated. It is noteworthy that the increasing importance of pedestrian protection seems to enforce even a system developed for vehicle-vehicle crashes to be investigated from the perspective of pedestrian safety.
AB - This paper investigates the effect of vehicle front height lowering operation of precrash dipping nose (PCDN) on pedestrians. Although PCDN was developed for vehicle-vehicle side crashes, there is a possibility that the range sensor for crash detection will fail to distinguish a group of pedestrians from a side-faced vehicle. For simulation-based investigation, a vehicle model, an air spring with PCDN actuator, a pedestrian, and active hood system (AHS) were modeled. Two vehicle models were made for a sedan and a sport utility vehicle (SUV), respectively. In all crash situations (frontal crash without AHS, frontal crash with AHS, and side crash without AHS), a falsely operated PCDN is expected to cause worse pedestrian injury. As a conclusion, we insist that PCDN should incorporate a pedestrian-recognition capability into its crash detection system to reduce the improper activation of its actuator. In addition, as AHS showed a good performance even in improper activation, we propose a complementary method that activates AHS when PCDN is activated. It is noteworthy that the increasing importance of pedestrian protection seems to enforce even a system developed for vehicle-vehicle crashes to be investigated from the perspective of pedestrian safety.
UR - http://www.scopus.com/inward/record.url?scp=57149126673&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=57149126673&partnerID=8YFLogxK
U2 - 10.1109/TITS.2008.2006789
DO - 10.1109/TITS.2008.2006789
M3 - Article
AN - SCOPUS:57149126673
VL - 9
SP - 678
EP - 687
JO - IEEE Transactions on Intelligent Transportation Systems
JF - IEEE Transactions on Intelligent Transportation Systems
SN - 1524-9050
IS - 4
M1 - 4685982
ER -