VEHICULAR COLLISION DETECTION DEVICE

• Main Authors: YAMAGUCHI ATSUSHI, IWASAKI NOBUYUKI
• Format: Patent
• Language: English; Japanese
• Published: 25.07.2016
• Subjects: PERFORMING OPERATIONS; TRANSPORTING; VEHICLES IN GENERAL; VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISEPROVIDED FOR

PROBLEM TO BE SOLVED: To provide a vehicular collision detection device that enables improvement of reliability of communications between impact detection means and collision determination means by using a simple configuration.SOLUTION: A transmission section 23 of an impact sensor 2 transmits detection signals G01-G08 formed based on an impact applied to a vehicle to an air bag ECU 3 sequentially. A first comparison section 32a of the air bag ECU 3 compares current values of the detection signals G01-G08 with a first detection threshold value DTh1. A second comparison section 32b compares the current values of the detection signals G01-G08 with a second detection threshold value DTh2. A communication abnormality detection section 33 of the air bag ECU 3 determines that communications between the impact sensor 2 and the air bag ECU 3 are normal when comparison results obtained by both of the comparison sections 32a, 32b are the same as each other. When the comparison results obtained by both of the comparison sections 32a, 32b are different from each other, the communication abnormality detection section 33 determines that an abnormality occurs in the communications between the impact sensor 2 and the air bag ECU 3.SELECTED DRAWING: Figure 2 【課題】簡単な構成によって、衝撃検出手段と衝突判定手段との間の通信の信頼性を向上できる車両用衝突検出装置の提供。【解決手段】衝撃センサ２の送信部２３は、車両に加えられた衝撃に基づいて形成された検出信号Ｇ０１〜Ｇ０８を、順次、エアバッグＥＣＵ３に送信する。エアバッグＥＣＵ３の第１比較部３２ａは、検出信号Ｇ０１〜Ｇ０８の電流値を第１検出閾値ＤＴｈ１と比較する。また、第２比較部３２ｂは、検出信号Ｇ０１〜Ｇ０８の電流値を第２検出閾値ＤＴｈ２と比較する。エアバッグＥＣＵ３の通信異常検出部３３は、双方の比較部３２ａ、３２ｂによる比較結果が互いに同じ場合、衝撃センサ２とエアバッグＥＣＵ３との間における通信が正常であると判定する。通信異常検出部３３は、双方の比較部３２ａ、３２ｂによる比較結果が互いに異なる場合、衝撃センサ２とエアバッグＥＣＵ３との間における通信に異常が発生したと判定する。【選択図】図２