DE10232523A1 - Car accident sensor has piezo or electromagnetic test pressure generator with sensor to compare with stored data - Google Patents
Car accident sensor has piezo or electromagnetic test pressure generator with sensor to compare with stored data Download PDFInfo
- Publication number
- DE10232523A1 DE10232523A1 DE2002132523 DE10232523A DE10232523A1 DE 10232523 A1 DE10232523 A1 DE 10232523A1 DE 2002132523 DE2002132523 DE 2002132523 DE 10232523 A DE10232523 A DE 10232523A DE 10232523 A1 DE10232523 A1 DE 10232523A1
- Authority
- DE
- Germany
- Prior art keywords
- pressure
- generating device
- cavity
- sensor
- pressure generating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
- G01L27/007—Malfunction diagnosis, i.e. diagnosing a sensor defect
-
- 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
- B60R2021/01006—Mounting of electrical components in vehicles
-
- 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
- B60R2021/01122—Prevention of malfunction
- B60R2021/01184—Fault detection or diagnostic circuits
-
- 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
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0136—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to actual contact with an obstacle, e.g. to vehicle deformation, bumper displacement or bumper velocity relative to the vehicle
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Biomedical Technology (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
Description
Die Erfindung betrifft eine Testdruckerzeugungseinrichtung an einem Unfallsensor eines Kraftfahrzeugs, der bei einem Unfall wenigstens eine Schutzmaßnahme auslösen soll.The invention relates to a test pressure generating device on an accident sensor of a motor vehicle, which is in an accident at least one protective measure trigger should.
Ein Unfallsensor mit einem langgestreckten Hohlkörper, an
den ein Drucksensor angeschlossen sein dürfte, ist durch die
Der Erfindung liegt die Aufgabe zu Grunde, eine Testdruckerzeugungseinrichtung an einem Unfallsensor eines Kraftfahrzeugs, mit einem langgestreckten, zumindest bereichsweise elastischen Hohlkörper, an dem ein Drucksensor angeschlossen ist, anzugeben, die eine einfache Überprüfung der Wirksamkeit des Unfallsensors ermöglicht.The invention is based on the object Basically, a test pressure generating device on an accident sensor of a motor vehicle, with an elongated, at least in some areas elastic hollow body, to which a pressure sensor is connected, specify a simple check of effectiveness of the accident sensor.
Diese Aufgabe ist durch die im Patentanspruch 1 angegebenen Merkmale gelöst. Vorteilhafte Ausgestaltungen der Erfindung sind den Unteransprüchen entnehmbar.This object is achieved in the claim 1 specified features solved. Advantageous embodiments of the invention can be found in the subclaims.
Um den Unfallsensor testen zu können, ohne die Schutzmaßnahme auszulösen, ist an den Hohlraum oder an einen elastischen Bereich des Hohlkörpers eine beliebige Druckerzeugungseinrichtung angeschlossen, die manuell oder automatisch aktivierbar ist und aktiviert den Druck im Hohlraum des betreffenden Hohlkörpers einmalig oder mehrmals erhöht, wobei entweder vor oder mit der Aktivierung der Druckerzeugungseinrichtung die Schutzeinrichtung manuell oder automatisch wirkungslos gesetzt ist oder der Druck auf einen Wert unterhalb des vorgegebenen Druckes erhöht wird. Die Druckerhöhung kann auch nach einem vorgegebenen Druckverlauf erfolgen. Der Wert kann Die Druckerzeugungseinrichtung kann beispielsweise ein Piezoelement oder einen Elektromagneten aufweisen. Wird an das Piezoelement oder den Elektromagneten eine Gleich- oder Wechselspannung angelegt, wird der elastische Hohlkörper durch das Piezoelement oder den Elektromagneten verformt, wodurch sich der Druck im Hohlraum des Hohlkörpers bis unterhalb des vorgegebenen Druckes erhöht. Werden die von dem Drucksensor oder einem anderen Sensor registrierte Druckerhöhung und eventuell weitere Werte wie die Drucklaufzeit zwischen der Ansteuerung der Druckerzeugungseinrichtung und dem von dem Drucksensor registrierten Druckanstieg sowie eine angelegte Spannung erfasst und mit gespeicherten Normalwerten verglichen, kann aus den Werten erkannt werden, ob der Unfallsensor wirksam oder defekt ist. Dies kann zumindest kurzzeitig angezeigt werden, damit ein eventuell defekter Unfallsensor ausgetauscht oder durch eine Reparatur wirksam gesetzt wird.In order to be able to test the accident sensor without the defense trigger, is a to the cavity or to an elastic region of the hollow body any pressure generating device connected manually or can be activated automatically and activates the pressure in the cavity of the hollow body in question increased once or several times, either before or with the activation of the pressure generating device the protective device is deactivated manually or automatically or the pressure is below the specified pressure elevated becomes. The pressure increase can also take place after a predetermined pressure curve. The value can The pressure generating device can be a piezo element, for example or have an electromagnet. Is attached to the piezo element or a direct or alternating voltage is applied to the electromagnet, becomes the elastic hollow body deformed by the piezo element or the electromagnet, whereby the pressure in the cavity of the hollow body to below the predetermined Pressure increased. Will the pressure increase registered by the pressure sensor or another sensor and possibly other values such as the print runtime between activation the pressure generating device and that registered by the pressure sensor Pressure rise and an applied voltage recorded and saved with Comparing normal values, the values can be used to determine whether the accident sensor is effective or defective. This can be at least briefly are displayed so that a possibly defective accident sensor can be replaced or is activated by a repair.
Zwei Ausführungsbeispiele der Erfindung werden anhand einer Zeichnung näher erläutert. Es zeigenTwo embodiments of the invention will be based on a drawing explained. Show it
Ein in den Figuren nicht erkennbares
Kraftfahrzeug weist an seiner vorderen Stoßstange
In
Damit die Funktion des Unfallssensors
Der äußere Endbereich des Schlauches
Ein zweites Ausführungsbeispiel ist in
Die eine Druckerhöhung in einem Hohlraum eines länglichen Hohlkörpers bewirkende Druckerhöhungseinrichtung kann an einen elastischen Wandbereich des Hohlkörpers oder direkt an den Hohlraum des Hohlkörpers angeschlossen ist. Eine Aktivierung der Schutzeinrichtung beim Testen des Unfallsensors kann wie bei den Ausführungsbeispielen vorgesehen verhindert werden, wenn der Druck im Hohlraum des betreffenden Hohlraumes lediglich auf einen Wert unterhalb des zum Auslösen der Schutzeinrichtung erforderlichen vorgegebenen Druckes erhöht wird. Ebenso kann ein Auslösen der Schutzeinrichtung verhindert werden, wenn vor oder bei der Aktivierung der Druckerzeugungseinrichtung die Schutzeinrichtung manuell oder automatisch abgeschaltet bzw. wirkungslos gesetzt wird.Which is an increase in pressure in a cavity elongated hollow body effecting pressure increasing device can be attached to an elastic wall area of the hollow body or directly to the cavity of the hollow body connected. An activation of the protective device during testing the accident sensor can be provided as in the exemplary embodiments can be prevented if the pressure in the cavity of the cavity in question only to a value below that required to trigger the protective device predetermined pressure increased becomes. Triggering can also occur of the protective device can be prevented if before or during activation the protective device manually or is automatically switched off or set ineffective.
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002132523 DE10232523A1 (en) | 2002-07-18 | 2002-07-18 | Car accident sensor has piezo or electromagnetic test pressure generator with sensor to compare with stored data |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002132523 DE10232523A1 (en) | 2002-07-18 | 2002-07-18 | Car accident sensor has piezo or electromagnetic test pressure generator with sensor to compare with stored data |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10232523A1 true DE10232523A1 (en) | 2004-01-29 |
Family
ID=29796432
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002132523 Withdrawn DE10232523A1 (en) | 2002-07-18 | 2002-07-18 | Car accident sensor has piezo or electromagnetic test pressure generator with sensor to compare with stored data |
Country Status (1)
Country | Link |
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DE (1) | DE10232523A1 (en) |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004031575A1 (en) * | 2004-06-29 | 2006-02-02 | Daimlerchrysler Ag | Motor vehicle collision detecting device, has two pressure sensors that are arranged at specific distance in hollow body, and run time differences for pressure signals of pressure surge between sensors are determined at impact place |
DE102004031577A1 (en) * | 2004-06-29 | 2006-02-09 | Daimlerchrysler Ag | Crash damage sensor for road vehicle has pipe on front of vehicle, filled with substance containing ferromagnetic spheres, connected at ends to magnetic sensors connected to control circuit |
DE102004034877A1 (en) * | 2004-07-19 | 2006-02-16 | Siemens Ag | impact sensor |
DE102004036501A1 (en) * | 2004-07-28 | 2006-03-23 | Daimlerchrysler Ag | Motor vehicle and object e.g. pedestrian, collision detecting device, has collision sensor arranged in deformable exterior area of vehicle and transferable to its initial state after it is released due to force effected on area |
DE102009048067A1 (en) * | 2009-10-01 | 2011-04-07 | Continental Automotive Gmbh | Impact sensor, has adjusting unit adjusting pressure between tubular body and surrounding area, where tubular body is pressurized-connected with housing unit of sensing unit, and pressure is adjusted at housing unit |
DE202011105865U1 (en) | 2011-05-28 | 2011-11-18 | Continental Automotive Gmbh | Front area of a vehicle with an elastically deformable hose during an impact |
DE102011011964A1 (en) * | 2011-02-22 | 2012-08-23 | Continental Automotive Gmbh | Impact sensor for motor car, has pressure sensor for detecting pressure change in cavity of elastically deformable hose |
DE102011011962A1 (en) * | 2011-02-22 | 2012-08-23 | Continental Automotive Gmbh | Crash sensor for motor car, has deformable hose with cavity and pressure sensor for acquisition of pressure change in cavity of hose, where crash is resilient, and hose is made of cross linked silicone material |
WO2012113362A1 (en) | 2011-02-22 | 2012-08-30 | Continental Automotive Gmbh | Crash sensor having an elastically deformable tube and at least one pressure sensor |
WO2012122958A1 (en) * | 2011-03-17 | 2012-09-20 | Continental Automotive Gmbh | Method for detecting an impact by means of a pressure sensor, and impact detector system |
DE102011102742A1 (en) | 2011-05-28 | 2012-11-29 | Continental Automotive Gmbh | Method for detecting collision detection in front area of vehicle, involves providing opening in direction towards hose, where predetermined pulse is applied to hose through opening |
DE102011083027A1 (en) * | 2011-09-20 | 2013-03-21 | Bayerische Motoren Werke Aktiengesellschaft | Device for detecting the impact of an object on a vehicle |
DE102012101859A1 (en) | 2012-03-06 | 2013-09-12 | Continental Automotive Gmbh | Pressure sensor for crash sensor system of vehicle, has electrical lead line for supplying power, and test compression device provided in housing of pressure sensor and temporarily connected with lead line of pressure sensor |
DE102012101856A1 (en) | 2012-03-06 | 2013-09-12 | Continental Automotive Gmbh | Method for performing function test of crash sensor system of vehicle, involves introducing test sound pressure level into plug region of pressure sensor attached to cavity |
DE102013215329A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with a reference cavity and a movable wall |
DE102013215331A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with two pressure sensors in an electronics housing and a movable wall section therebetween |
DE102013215330A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with an elastic hollow body and a pressure sensor and a test pressure generating device |
WO2015028199A1 (en) * | 2013-08-30 | 2015-03-05 | Robert Bosch Gmbh | Method, device and system for checking a device for a vehicle for detecting an impact |
DE102014202452A1 (en) * | 2014-02-11 | 2015-08-13 | Bayerische Motoren Werke Aktiengesellschaft | Method for compensating tolerances of pressure sensor systems |
DE102014208649A1 (en) | 2014-05-08 | 2015-11-12 | Continental Automotive Gmbh | Impact sensor system with two attachable in the outer region of a vehicle and deformable in the event of an impact hoses |
DE102014208651A1 (en) | 2014-05-08 | 2015-11-12 | Continental Automotive Gmbh | Impact sensor system with two nested deformable hoses |
DE102015200656A1 (en) * | 2015-01-16 | 2016-07-21 | Continental Automotive Gmbh | Method for impact detection by means of a pressure elastic deformable hollow body |
CN110040090A (en) * | 2018-01-17 | 2019-07-23 | 通用汽车环球科技运作有限责任公司 | Sense pipe diagnostic system and method |
EP3617007A1 (en) * | 2018-08-20 | 2020-03-04 | Toyota Material Handling Manufacturing Sweden AB | Impact sensor device, a fork-lift truck comprsing such a device, and a method for arranging such a device to a fork-lift truck |
Citations (3)
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DE1944289A1 (en) * | 1969-09-01 | 1971-03-11 | Herzer Fa Kurt | Accident detector, especially for motor vehicles |
JPH10206266A (en) * | 1997-01-23 | 1998-08-07 | Tokin Corp | Automatic inspection apparatus for semiconductor pressure-sensor chip |
DE19721176A1 (en) * | 1997-05-21 | 1998-12-03 | Bosch Gmbh Robert | Pressure sensor testing method for fuel supply system in IC engine |
-
2002
- 2002-07-18 DE DE2002132523 patent/DE10232523A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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DE1944289A1 (en) * | 1969-09-01 | 1971-03-11 | Herzer Fa Kurt | Accident detector, especially for motor vehicles |
JPH10206266A (en) * | 1997-01-23 | 1998-08-07 | Tokin Corp | Automatic inspection apparatus for semiconductor pressure-sensor chip |
DE19721176A1 (en) * | 1997-05-21 | 1998-12-03 | Bosch Gmbh Robert | Pressure sensor testing method for fuel supply system in IC engine |
Cited By (37)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004031577A1 (en) * | 2004-06-29 | 2006-02-09 | Daimlerchrysler Ag | Crash damage sensor for road vehicle has pipe on front of vehicle, filled with substance containing ferromagnetic spheres, connected at ends to magnetic sensors connected to control circuit |
DE102004031575A1 (en) * | 2004-06-29 | 2006-02-02 | Daimlerchrysler Ag | Motor vehicle collision detecting device, has two pressure sensors that are arranged at specific distance in hollow body, and run time differences for pressure signals of pressure surge between sensors are determined at impact place |
DE102004034877A1 (en) * | 2004-07-19 | 2006-02-16 | Siemens Ag | impact sensor |
DE112005001509B4 (en) * | 2004-07-19 | 2008-12-18 | Continental Automotive Gmbh | impact sensor |
DE102004036501A1 (en) * | 2004-07-28 | 2006-03-23 | Daimlerchrysler Ag | Motor vehicle and object e.g. pedestrian, collision detecting device, has collision sensor arranged in deformable exterior area of vehicle and transferable to its initial state after it is released due to force effected on area |
DE102009048067A1 (en) * | 2009-10-01 | 2011-04-07 | Continental Automotive Gmbh | Impact sensor, has adjusting unit adjusting pressure between tubular body and surrounding area, where tubular body is pressurized-connected with housing unit of sensing unit, and pressure is adjusted at housing unit |
DE102009048067B4 (en) * | 2009-10-01 | 2019-08-29 | Continental Automotive Gmbh | Impact sensor with a tubular body |
DE112011103050B4 (en) * | 2011-02-22 | 2020-09-03 | Continental Automotive Gmbh | Impact sensor with an elastically deformable hose and at least one pressure sensor |
DE202011110919U1 (en) | 2011-02-22 | 2017-03-27 | Continental Automotive Gmbh | Impact sensor with an elastically deformable hose and at least one pressure sensor |
DE102011011964A1 (en) * | 2011-02-22 | 2012-08-23 | Continental Automotive Gmbh | Impact sensor for motor car, has pressure sensor for detecting pressure change in cavity of elastically deformable hose |
DE102011011962A1 (en) * | 2011-02-22 | 2012-08-23 | Continental Automotive Gmbh | Crash sensor for motor car, has deformable hose with cavity and pressure sensor for acquisition of pressure change in cavity of hose, where crash is resilient, and hose is made of cross linked silicone material |
WO2012113362A1 (en) | 2011-02-22 | 2012-08-30 | Continental Automotive Gmbh | Crash sensor having an elastically deformable tube and at least one pressure sensor |
WO2012122958A1 (en) * | 2011-03-17 | 2012-09-20 | Continental Automotive Gmbh | Method for detecting an impact by means of a pressure sensor, and impact detector system |
DE102011102742A1 (en) | 2011-05-28 | 2012-11-29 | Continental Automotive Gmbh | Method for detecting collision detection in front area of vehicle, involves providing opening in direction towards hose, where predetermined pulse is applied to hose through opening |
DE202011105865U1 (en) | 2011-05-28 | 2011-11-18 | Continental Automotive Gmbh | Front area of a vehicle with an elastically deformable hose during an impact |
WO2013041383A3 (en) * | 2011-09-20 | 2013-08-15 | Bayerische Motoren Werke Aktiengesellschaft | Device for detecting the impact of an object on a vehicle |
DE102011083027A1 (en) * | 2011-09-20 | 2013-03-21 | Bayerische Motoren Werke Aktiengesellschaft | Device for detecting the impact of an object on a vehicle |
US9489777B2 (en) | 2011-09-20 | 2016-11-08 | Bayerische Motoren Werke Aktiengesellschaft | Device for detecting the impact of an object on a vehicle |
DE102012101859A1 (en) | 2012-03-06 | 2013-09-12 | Continental Automotive Gmbh | Pressure sensor for crash sensor system of vehicle, has electrical lead line for supplying power, and test compression device provided in housing of pressure sensor and temporarily connected with lead line of pressure sensor |
DE102012101856A1 (en) | 2012-03-06 | 2013-09-12 | Continental Automotive Gmbh | Method for performing function test of crash sensor system of vehicle, involves introducing test sound pressure level into plug region of pressure sensor attached to cavity |
DE102012101856B4 (en) * | 2012-03-06 | 2021-06-24 | Continental Automotive Gmbh | Method for the functional test of an impact sensor system consisting of a cavity and pressure sensors |
DE102013215330A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with an elastic hollow body and a pressure sensor and a test pressure generating device |
DE102013215329A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with a reference cavity and a movable wall |
DE102013215331A1 (en) | 2013-08-05 | 2015-02-05 | Continental Automotive Gmbh | Impact sensor for a motor vehicle with two pressure sensors in an electronics housing and a movable wall section therebetween |
WO2015028199A1 (en) * | 2013-08-30 | 2015-03-05 | Robert Bosch Gmbh | Method, device and system for checking a device for a vehicle for detecting an impact |
JP2016529501A (en) * | 2013-08-30 | 2016-09-23 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツングRobert Bosch Gmbh | Method, apparatus and system for inspecting a vehicle apparatus for detecting a collision |
US9921119B2 (en) | 2013-08-30 | 2018-03-20 | Robert Bosch Gmbh | Method, device and system for checking a device for a vehicle for detecting an impact |
DE102014202452A1 (en) * | 2014-02-11 | 2015-08-13 | Bayerische Motoren Werke Aktiengesellschaft | Method for compensating tolerances of pressure sensor systems |
DE102014208649A1 (en) | 2014-05-08 | 2015-11-12 | Continental Automotive Gmbh | Impact sensor system with two attachable in the outer region of a vehicle and deformable in the event of an impact hoses |
DE102014208651A1 (en) | 2014-05-08 | 2015-11-12 | Continental Automotive Gmbh | Impact sensor system with two nested deformable hoses |
DE102014208649B4 (en) | 2014-05-08 | 2023-03-09 | Continental Automotive Technologies GmbH | Impact sensor system with two hoses that can be arranged outside of a vehicle and deformed in the event of an impact |
DE102014208651B4 (en) | 2014-05-08 | 2023-03-09 | Continental Automotive Technologies GmbH | Impact sensor system with two deformable hoses arranged one inside the other |
DE102015200656A1 (en) * | 2015-01-16 | 2016-07-21 | Continental Automotive Gmbh | Method for impact detection by means of a pressure elastic deformable hollow body |
DE102015200656B4 (en) | 2015-01-16 | 2022-09-22 | Continental Automotive Technologies GmbH | Method for impact detection using a pressure-elastically deformable hollow body |
CN110040090A (en) * | 2018-01-17 | 2019-07-23 | 通用汽车环球科技运作有限责任公司 | Sense pipe diagnostic system and method |
DE102019100550B4 (en) * | 2018-01-17 | 2021-03-18 | GM Global Technology Operations LLC | MEASURING TUBE DIAGNOSTIC SYSTEM |
EP3617007A1 (en) * | 2018-08-20 | 2020-03-04 | Toyota Material Handling Manufacturing Sweden AB | Impact sensor device, a fork-lift truck comprsing such a device, and a method for arranging such a device to a fork-lift truck |
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