JP6440834B2 - 粒子を検出するセンサの機能制御のための方法 - Google Patents
粒子を検出するセンサの機能制御のための方法 Download PDFInfo
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
- G01N15/0606—Investigating concentration of particle suspensions by collecting particles on a support
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/045—Circuits
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
- G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
- G01N27/12—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a solid body in dependence upon absorption of a fluid; of a solid body in dependence upon reaction with a fluid, for detecting components in the fluid
- G01N27/125—Composition of the body, e.g. the composition of its sensitive layer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0042—Investigating dispersion of solids
- G01N2015/0046—Investigating dispersion of solids in gas, e.g. smoke
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Description
従来技術から、粒子、例えば煤の粒子又は粉塵の粒子を検出する多数の方法及び装置が公知である。本発明を、以下で、さらなる実施形態及び用途を制限することなく、特に、粒子、特に、内燃機関の排ガス流内の煤の粒子を検出するセンサと関連して、説明する。
従って、既知の方法の欠点を少なくとも実質的に回避し、加熱器入力を補償することによって自己診断の精度が高められた、粒子、特に煤を検出するセンサの機能制御のための方法が提案される。
・第1の測定量を求めるために第1の電流−電圧測定を実施するステップと、
・測定電極のうちの1つの測定電極が異なる電位に置かれている状態で、第2の測定量を求めるために第2の電流−電圧測定を実施するステップと、
・第3の測定量を求めるために第3の電流−電圧測定を実施するステップと、
・第1の測定量と第3の測定量とを用いて、第2の測定量を修正するための修正値を形成するステップと、
を、有利には記載された順序で有している。
図1は、粒子、特に、ガス流、例えば内燃機関の排ガス流内の煤を検出するセンサ10を示している。ここで、このセンサ10は、自動車の排ガス経路にはめ込むために用いられる。例えば、センサ10は、煤センサとして形成されており、有利には、ディーゼル内燃機関を備えた自動車の煤フィルタの下流に配置されている。
Claims (6)
- 粒子を検出するセンサ(10)の機能制御のための方法であって、
前記センサ(10)は、少なくとも2つの測定電極(20,22)と電気的絶縁体(12,18)とを有しており、前記電気的絶縁体(12,18)の一面上に前記測定電極(20,22)が配置されており、
前記センサ(10)はさらに、所定の電圧の印加によって駆動される加熱要素(14)を有しており、
前記加熱要素(14)は、前記電気的絶縁体(12,18)内に組み込まれており、
前記センサ(10)の前記測定電極(20,22)の自己診断の際、前記加熱要素(14)が駆動された状態で、前記測定電極(20,22)のうちの1つの測定電極(22)に、前記加熱要素(14)に印加される前記所定の電圧よりも低い電圧が印加され、かつ、前記測定電極(20,22)のうちのもう1つの測定電極(20)がアースされ、
前記方法は、
・第1の測定量を求めるために第1の電流−電圧測定を実施するステップと、
・前記自己診断のために、前記測定電極(20,22)のうち1つの測定電極(22)が異なる電位(50)に置かれている状態で、第2の測定量を求めるために第2の電流−電圧測定を実施するステップと、
・第3の測定量を求めるために第3の電流−電圧測定を実施するステップと、
・前記第1の測定量と前記第3の測定量とを用いて、前記第2の測定量を修正するための修正値を形成するステップとを含んでおり、
前記第1の電流−電圧測定は、前記第2の電流−電圧測定の前に実施され、前記第3の電流−電圧測定は、前記第2の電流−電圧測定の後に実施され、
前記測定電極(20,22)のうちの1つの測定電極(22)に電位を印加せずに、前記第1の電流−電圧測定及び前記第3の電流−電圧測定が実施され、
前記第1の測定量及び前記第3の測定量に基づいて前記修正値が求められ、
修正のための前記修正値を前記第2の測定量から差し引き、
前記第1の測定量、前記第2の測定量及び前記第3の測定量は、電流又は電圧である、
ことを特徴とする、粒子を検出するセンサ(10)の機能制御のための方法。 - 前記加熱要素(14)に印加される電圧は12Vであり、前記第2の電流−電圧測定の実施中、前記1つの測定電極(22)に印加される前記電位(50)は8.4Vである、請求項1に記載の方法。
- 前記粒子は、煤である、請求項1又は2に記載の方法。
- 制御装置(26)上で実行されるときに、請求項1乃至3のいずれか一項に記載の方法の各ステップを実施するために構成されている、
ことを特徴とするコンピュータプログラム。 - 請求項4に記載のコンピュータプログラムが記憶されている、
ことを特徴とする電子的な記憶媒体。 - 請求項5に記載の電子的な記憶媒体を含んでいる、
ことを特徴とする電子的な制御装置(26)。
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DE102014220398.8A DE102014220398A1 (de) | 2014-10-08 | 2014-10-08 | Verfahren zur Funktionskontrolle eines Sensors zur Detektion von Teilchen |
DE102014220398.8 | 2014-10-08 | ||
PCT/EP2015/068662 WO2016055200A1 (de) | 2014-10-08 | 2015-08-13 | Verfahren zur funktionskontrolle eines sensors zur detektion von teilchen |
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US (1) | US10067048B2 (ja) |
EP (1) | EP3204750B1 (ja) |
JP (1) | JP6440834B2 (ja) |
KR (1) | KR102373617B1 (ja) |
CN (1) | CN106796167B (ja) |
DE (1) | DE102014220398A1 (ja) |
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US9803524B2 (en) * | 2015-02-03 | 2017-10-31 | Ford Global Technologies, Llc | Methods and systems for increasing particulate matter deposition in an exhaust particulate matter sensor |
US10768131B2 (en) * | 2015-11-25 | 2020-09-08 | Kyocera Corporation | Sensor substrate arrangement for a particulate sensor device |
DE102018205595A1 (de) * | 2017-12-06 | 2019-06-06 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Sensors zur Detektion von Teilchen in einem Messgas |
DE102018219625A1 (de) | 2018-11-16 | 2020-05-20 | Robert Bosch Gmbh | Verfahren zum Bewerten der Funktionsfähigkeit eines Sensors zur Detektion von Ruß |
IT201900010647A1 (it) * | 2019-07-02 | 2021-01-02 | St Microelectronics Srl | Procedimento di funzionamento di un dispositivo sensore di gas, e corrispondente dispositivo sensore di gas |
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DE102004028997A1 (de) * | 2004-06-16 | 2006-01-05 | Robert Bosch Gmbh | Verfahren zur Beeinflussung der Russanlagerung auf Sensoren |
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DE102009027378A1 (de) * | 2009-07-01 | 2011-01-05 | Robert Bosch Gmbh | Verfahren und Diagnosevorrichtung zur Diagnose einer beheizbaren Abgassonde einer Brennkraftmaschine |
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JP5737228B2 (ja) | 2012-06-05 | 2015-06-17 | 株式会社デンソー | 粒子状物質検出システム |
DE102012210525A1 (de) * | 2012-06-21 | 2013-12-24 | Robert Bosch Gmbh | Verfahren zur Funktionskontrolle eines Sensors zur Detektion von Teilchen und Sensor zur Detektion von Teilchen |
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JP2017536534A (ja) | 2017-12-07 |
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DE102014220398A1 (de) | 2016-04-14 |
EP3204750B1 (de) | 2021-05-19 |
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CN106796167B (zh) | 2019-11-19 |
KR20170066412A (ko) | 2017-06-14 |
KR102373617B1 (ko) | 2022-03-15 |
WO2016055200A1 (de) | 2016-04-14 |
US10067048B2 (en) | 2018-09-04 |
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