JP6322281B2 - センサの作動を監視する方法及びセンサシステム - Google Patents
センサの作動を監視する方法及びセンサシステム Download PDFInfo
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/14—Introducing closed-loop corrections
- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
- F02D41/146—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration
- F02D41/1461—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an NOx content or concentration of the exhaust gases emitted by the engine
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- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0808—Diagnosing performance data
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- F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
- F02D41/1477—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the regulation circuit or part of it,(e.g. comparator, PI regulator, output)
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- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/22—Safety or indicating devices for abnormal conditions
- F02D41/222—Safety or indicating devices for abnormal conditions relating to the failure of sensors or parameter detection devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0027—General constructional details of gas analysers, e.g. portable test equipment concerning the detector
- G01N33/0036—General constructional details of gas analysers, e.g. portable test equipment concerning the detector specially adapted to detect a particular component
- G01N33/0037—NOx
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- F01N2560/00—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics
- F01N2560/02—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor
- F01N2560/026—Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being an exhaust gas sensor for measuring or detecting NOx
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
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- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02T10/10—Internal combustion engine [ICE] based vehicles
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
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- General Engineering & Computer Science (AREA)
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- Medicinal Chemistry (AREA)
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- General Health & Medical Sciences (AREA)
- Food Science & Technology (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Automation & Control Theory (AREA)
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- Combined Controls Of Internal Combustion Engines (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
- Testing And Monitoring For Control Systems (AREA)
Description
10 内燃機関
12 微粒子フィルタ
14 選択触媒反応ユニット
16 尿素インジェクタ
18 NOxセンサ
20 制御装置
22 測定装置
24 第1のメモリ
26 通信ユニット
28 基準ユニット
30 通信ユニット
32 第2のメモリ
34 比較ユニット
Claims (17)
- 車両のNOxセンサの作動を監視する方法であって、
i)各データ値がセンサ出力信号に対応する複数のデータ値を格納する段階であって、前記データ値が可能性があるデータ値の範囲を規定しており、全ての格納されたデータ値が、可能性があるデータ値の前記範囲にわたって分布するようにある期間の間にその段階を実行し、
ii)可能性があるデータ値の前記範囲内に複数の別個の区間を定め、及び、
iii)各区間内の前記データ値の頻度を計算し、それでセンサ表示を形成する、ことにより前記センサの作動を表示する段階;
少なくとも一つの基準センサ表示を受け取る段階;及び、
制御装置(20)の比較ユニット(34)によって、前記センサ表示を前記少なくとも一つの基準センサ表示と比較する段階;を含む方法。 - 前記複数のデータ値を格納する段階を、前記センサが接続されるシステムの複数の異なる作動モードについて実行する、請求項1に記載の方法。
- 前記基準センサ表示は別個の基準区間内における基準データ値の頻度を含み、前記別個の基準区間は前記センサ表示の別個の区間に対応している、請求項1または2に記載の方法。
- 前記センサ表示を前記基準センサ表示と比較する段階が、前記表示を正規化する段階を更に含んでいる、請求項3に記載の方法。
- 前記センサ表示を前記基準センサ表示と比較する段階が、
前記センサ表示と前記基準センサ表示との間の差を表す相関関係を計算すること、及び、
予め定められた層別化体系に従って前記相関関係を層別化することを更に含んでいる、請求項1乃至4のいずれかに記載の方法。 - 前記層別化体系が複数の基準カテゴリを含み、それぞれの基準カテゴリが前記センサの特定の作動に関連付けられている、請求項5に記載の方法。
- 前記基準カテゴリが、正常に作動しているセンサに対応する一つのカテゴリ、及び正常に作動していないセンサに対応する少なくとも一つのカテゴリを含んでいる、請求項6に記載の方法。
- 前記基準カテゴリが、正常に作動しているシステムにおいて正常に作動しているセンサに対応する一つのカテゴリ、及び、正常に作動していないシステムにおいて正常に作動しているセンサに対応する少なくとも一つのカテゴリ、を更に含んでいる、請求項7に記載の方法。
- 前記システムが車両の排気後処理システムである、請求項8に記載の方法。
- 前記相関関係がスカラである、請求項5乃至9のいずれかに記載の方法。
- 前記方法が複数回繰り返されて一組の相関関係に帰着し、かつ前記センサの故障を予測するために前記一組の相関関係を評価する段階を更に含んでいる、請求項5乃至10のいずれかに記載の方法。
- 前記基準センサ表示が、一つあるいは複数の他のセンサについての一つあるいは複数のセンサ表示に対応する、請求項1乃至11のいずれかに記載の方法。
- コンピュータプログラムであって、前記プログラムがコンピュータ上で実行されるときに請求項1乃至12のいずれかに記載した段階を実行するためのプログラムコードを含んでいるコンピュータプログラム。
- コンピュータ可読媒体であって、プログラム製品がコンピュータ上で実行されるときに請求項1乃至13のいずれかに記載した段階を実行するためのプログラムコードを含んでいるコンピュータプログラムを読み込み記憶するコンピュータ可読媒体。
- 車両のNOxセンサと、このセンサ(18)の作動を監視するための制御装置(20)とを備えるセンサシステムであって、前記制御装置(20)が、
前記センサの作動の表示を格納する第1のメモリ(24)であり、前記センサ表示が、可能性のあるデータ値の範囲を規定する複数のデータを含み、その結果、全ての格納されたデータ値は、それぞれのデータ値がセンサの出力信号に対応している可能性のあるデータ値の前記範囲にわたって分配され、複数の別個の区間内の前記データ値の度数分布に関連する情報を保持している、第1のメモリと、
少なくとも一つの基準センサ表示を格納する第2のメモリ(32)と、
前記センサ表示を前記少なくとも一つの基準センサ表示と比較するように構成された比較ユニット(34)と、を含んでいるセンサシステム。 - 前記センサ表示及び前記基準センサ表示を前記第1のメモリ(24)及び前記第2のメモリ(32)から受け取って、前記センサ表示及び前記基準センサ表示を前記比較ユニット(34)に送信するように構成された通信ユニット(26、30)を更に備える請求項15に記載のセンサシステム。
- 前記第1のメモリ(24)が車両上に配置され、かつ前記第2のメモリ(32)及び前記比較ユニット(34)が車両外に配置されている、請求項16に記載のセンサシステム。
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PCT/EP2013/002983 WO2015048981A1 (en) | 2013-10-04 | 2013-10-04 | A method for monitoring the operation of a sensor |
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EP (1) | EP3052792A1 (ja) |
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NL2015086B1 (en) * | 2015-07-03 | 2017-01-30 | Daf Trucks Nv | Method, apparatus, and system for diagnosing at least one NOx-sensor of a diesel engine system. |
JP2018077757A (ja) * | 2016-11-11 | 2018-05-17 | 横河電機株式会社 | 情報処理装置、情報処理方法、情報処理プログラム及び記録媒体 |
US10526992B2 (en) | 2017-04-05 | 2020-01-07 | GM Global Technology Operations LLC | Method and system to detect and mitigate sensor degradation |
US10424133B2 (en) * | 2017-06-19 | 2019-09-24 | GM Global Technology Operations LLC | Method and system for generating prognostic information regarding a component in a vehicle |
US10026241B1 (en) * | 2017-08-24 | 2018-07-17 | GM Global Technologies Operations LLC | Combustion engine airflow management systems and methods |
CN108564681B (zh) * | 2018-04-17 | 2021-12-31 | 百度在线网络技术(北京)有限公司 | 数据处理方法、装置、计算设备、程序产品和存储介质 |
WO2019234789A1 (ja) * | 2018-06-04 | 2019-12-12 | 日産自動車株式会社 | 異常判定装置及び異常判定方法 |
GB2576309A (en) * | 2018-08-10 | 2020-02-19 | Green Running Ltd | Systems and methods for condition monitoring |
CN113997989B (zh) * | 2021-11-29 | 2024-03-29 | 中国人民解放军国防科技大学 | 磁浮列车单点悬浮系统安全检测方法、装置、设备及介质 |
CN113865873B (zh) * | 2021-12-02 | 2022-02-18 | 中国空气动力研究与发展中心设备设计与测试技术研究所 | 一种轴承组的健康监测方法 |
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JP2628341B2 (ja) * | 1988-05-19 | 1997-07-09 | フィガロ技研株式会社 | ガス検出方法及びその装置 |
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US10109118B2 (en) | 2018-10-23 |
CN105658937B (zh) | 2019-06-28 |
US20160232723A1 (en) | 2016-08-11 |
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