Invention Grant
- Patent Title: Estimated time-to-collision (TTC) calculation apparatus and estimated TTC calculation method
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Application No.: US15500511Application Date: 2015-08-03
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Publication No.: US10384658B2Publication Date: 2019-08-20
- Inventor: Yosuke Ito , Yukihiko Yamada , Akitoshi Minemura , Jun Tsuchida , Masayuki Shimizu
- Applicant: DENSO CORPORATION , TOYOTA JIDOSHA KABUSHIKI KAISHA
- Applicant Address: JP Kariya, Aichi-pref. JP Toyota-shi, Aichi-ken
- Assignee: DENSO CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee: DENSO CORPORATION,TOYOTA JIDOSHA KABUSHIKI KAISHA
- Current Assignee Address: JP Kariya, Aichi-pref. JP Toyota-shi, Aichi-ken
- Agency: Knobbe, Martne, Olson & Bear, LLP
- Priority: JP2014-157781 20140801
- International Application: PCT/JP2015/071916 WO 20150803
- International Announcement: WO2016/017822 WO 20160204
- Main IPC: B60T7/22
- IPC: B60T7/22 ; G08G1/16 ; B60R21/0134

Abstract:
An estimated time-to-collision (TTC) calculation apparatus includes a distance acquisition unit, relative velocity acquisition unit, relative acceleration acquisition unit, and estimated TTC calculation unit. The distance acquisition unit acquires a distance X between the own vehicle and an object. The relative velocity acquisition unit acquires a relative velocity V of the object with respect to the own vehicle. The relative acceleration acquisition unit acquires a relative acceleration β of the object with respect to the own vehicle. The estimated TTC calculation unit calculates an estimated TTC t until the own vehicle collides with the object. In this apparatus and method, the estimated TTC calculation unit calculates t, based on the distance X and the relative velocity V, when the own vehicle is accelerating, and when the own vehicle is decelerating, calculates t based on the distance X, the relative velocity V, and the relative acceleration β.
Public/Granted literature
- US20170210360A1 ESTIMATED TIME-TO-COLLISION (TTC) CALCULATION APPARATUS AND ESTIMATED TTC CALCULATION METHOD Public/Granted day:2017-07-27
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