JP2010115967A - 電子式セーフィングシステム - Google Patents
電子式セーフィングシステム Download PDFInfo
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- JP2010115967A JP2010115967A JP2008289031A JP2008289031A JP2010115967A JP 2010115967 A JP2010115967 A JP 2010115967A JP 2008289031 A JP2008289031 A JP 2008289031A JP 2008289031 A JP2008289031 A JP 2008289031A JP 2010115967 A JP2010115967 A JP 2010115967A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R2021/01013—Means for detecting collision, impending collision or roll-over
- B60R2021/01027—Safing sensors
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Abstract
【解決手段】電子式セーフィングシステム1は、セーフィングセンサ11と、比較回路12と、マイクロコンピュータ13とを備えている。マイクロコンピュータ13は、比較回路12の入力端子に接続され、内部レジスタの設定で入出力設定可能なA/DポートP2を有している。比較回路12を診断するとき、マイクロコンピュータ13は、入出力設定可能なA/DポートP2をアナログ出力ポートに変更し、診断のための所定電圧を出力する。そして、比較回路12の出力信号に基づいて比較回路12を診断する。これにより、診断のための回路を別途設ける必要がなく、簡素な構成で比較回路12の診断を行うことができ、コストを抑えられる。
【選択図】図1
Description
Claims (7)
- 衝突に伴って変化する物理量を検出し、検出結果に応じた電圧を出力するセーフィングセンサと、
前記セーフィングセンサの出力電圧を基準電圧と比較し、比較結果に応じた信号を出力する比較回路と、
前記セーフィングセンサの出力電圧と前記比較回路の出力信号とに基づいて衝突を判定するマイクロコンピュータと、
を備えた電子式セーフィングシステムにおいて、
前記セーフィングセンサの出力端子は、前記比較回路の入力端子に接続され、
前記マイクロコンピュータは、前記比較回路の入力端子に接続され、内部レジスタの設定で入出力設定可能なA/Dポートを有し、前記比較回路の診断のときには、入出力設定可能な前記A/Dポートを出力ポートに設定し、入出力設定可能な前記A/Dポートから診断のための所定電圧を出力するとともに、前記比較回路の出力信号に基づいて前記比較回路を診断することを特徴とする電子式セーフィングシステム。 - 前記比較回路は、直列接続された複数の分圧抵抗からなり、一端が電源に接続されるとともに、他端が接地され、前記基準電圧を設定する分圧回路と、
前記セーフィングセンサの出力電圧を、前記分圧回路によって設定された前記基準電圧と比較し、比較結果に応じた信号を出力するコンパレータと、
からなることを特徴とする請求項1に記載の電子式セーフィングシステム。 - 前記コンパレータは、反転入力端子が前記分圧回路を構成する複数の前記分圧抵抗の直列接続点のいずれかに接続されるとともに、非反転入力端子が前記比較回路の入力端子を、出力端子が前記比較回路の出力端子をそれぞれ構成することを特徴とする請求項2に記載の電子式セーフィングシステム。
- 前記コンパレータは、非反転入力端子が前記分圧回路を構成する複数の前記分圧抵抗の直列接続点のいずれかに接続されるとともに、反転入力端子が前記比較回路の入力端子を、出力端子が前記比較回路の出力端子をそれぞれ構成することを特徴とする請求項2に記載の電子式セーフィングシステム。
- 前記マイクロコンピュータは、前記コンパレータの出力信号に基づいて前記分圧回路及び前記コンパレータの少なくともいずれかを診断することを特徴とする請求項2〜4のいずれか1項に記載の電子式セーフィングシステム。
- 前記セーフィングセンサの出力端子は、保護抵抗を介して前記比較回路の入力端子に接続され、
前記マイクロコンピュータの入出力設定可能な前記A/Dポートは、前記保護抵抗の前記比較回路側に接続されることを特徴とする請求項1〜5のいずれか1項に記載の電子式セーフィングシステム。 - 車両に搭載され、車両への衝突を検出し、検出結果に基づいて乗員保護装置の起動回路に起動信号を出力することを特徴とする請求項1〜6のいずれか1項に記載の電子式セーフィングシステム。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008289031A JP4670940B2 (ja) | 2008-11-11 | 2008-11-11 | 電子式セーフィングシステム |
US12/590,171 US8180520B2 (en) | 2008-11-11 | 2009-11-03 | Electronic safing system |
Applications Claiming Priority (1)
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JP2008289031A JP4670940B2 (ja) | 2008-11-11 | 2008-11-11 | 電子式セーフィングシステム |
Publications (2)
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JP2010115967A true JP2010115967A (ja) | 2010-05-27 |
JP4670940B2 JP4670940B2 (ja) | 2011-04-13 |
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JP2008289031A Expired - Fee Related JP4670940B2 (ja) | 2008-11-11 | 2008-11-11 | 電子式セーフィングシステム |
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JP (1) | JP4670940B2 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2018211889A1 (ja) * | 2017-05-16 | 2018-11-22 | パナソニックIpマネジメント株式会社 | モータ駆動装置 |
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JP2002166820A (ja) * | 2000-12-01 | 2002-06-11 | Denso Corp | センサ出力検出回路 |
JP2004268632A (ja) * | 2003-03-05 | 2004-09-30 | Denso Corp | 回路保護装置およびエアバッグシステム |
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US20100121521A1 (en) | 2010-05-13 |
US8180520B2 (en) | 2012-05-15 |
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