Pre-crash sensor for pre-crash safety

Tokoro, Setsuo; Kuroda, Kazushi; Nagao, Tomoki; Kawasaki, Tomoya; Yamamoto, Takeshi

Affiliations

Abstract

Improvement of vehicle safety performance is one of the targets of ITS development. A pre-crash safety system has been developed that utilizes ITS technologies. The Pre-crash Safety system reduces collision injury by estimating TTC(time-to- collision) to preemptively activate safety devices, which consist of “Pre-crash Seatbelt” system and “Pre-crash Brake Assist” system.

The key technology of these systems is a “Pre-crash Sensor” to detect obstacles and estimate TTC. In this paper, the Pre-crash Sensor is presented. The Pre-crash Sensor uses millimeter-wave radar to detect preceding vehicles, oncoming vehicles, roadside objects, etc. on the road ahead. Furthermore, by using a phased array system as a vehicle radar for the first time, a compact electronically scanned millimeter-wave radar with high recognition performance has been achieved.

With respect to the obstacle determination algorithm, a crash determination algorithm has been newly developed, taking into account estimation of the direction of advance of the vehicle, in addition to the distance, relative speed and direction of the object.

Cited By (5)

Year	Entry
2005	Pack R, Koopmann J, Yu H, Najm WG. Pre-crash sensing countermeasures and benefits. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2005	Lemmen P, Gietelink O, Shah M, Parenteau C, Kosiak W, Cashler B. Development of a pre-crash system using the VEHIL test facility. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2005	Aparicio F. EEVC WG19 activities on primary and secondary safety interaction. In: Proceedings of the 19th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 6-9, 2005; Washington, DC.
2009	Kuroda K, Izumikawa I, Kouketsu O. Logical mediation structures for Toyota’s driver support systems. In: Proceedings of the 21st International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 15-18, 2009; Stuttgart, Germany.
2015	Fujishiro R, Liu C, Christopher L, Zheng JY. Bicyclist behavior analysis for PCS (pre-collision system) based on naturalistic driving. In: Proceedings of the 24th International Technical Conference on the Enhanced Safety of Vehicles (ESV). June 8-11, 2015; Gothenburg, Sweden.