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WO2011131392A1 - Procédé et dispositif pour générer un signal d'accélération pour une plage g peu élevée - Google Patents

Procédé et dispositif pour générer un signal d'accélération pour une plage g peu élevée Download PDF

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Publication number
WO2011131392A1
WO2011131392A1 PCT/EP2011/052632 EP2011052632W WO2011131392A1 WO 2011131392 A1 WO2011131392 A1 WO 2011131392A1 EP 2011052632 W EP2011052632 W EP 2011052632W WO 2011131392 A1 WO2011131392 A1 WO 2011131392A1
Authority
WO
WIPO (PCT)
Prior art keywords
acceleration signal
signal
range
bandwidth
acceleration
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.)
Ceased
Application number
PCT/EP2011/052632
Other languages
German (de)
English (en)
Inventor
Klaus Miekley
Mathias Reimann
Michael Baus
Herbert Oechsner
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2011131392A1 publication Critical patent/WO2011131392A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
    • G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
    • G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/17—Using electrical or electronic regulation means to control braking
    • B60T8/1755—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve
    • B60T8/17551—Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve determining control parameters related to vehicle stability used in the regulation, e.g. by calculations involving measured or detected parameters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
    • B60T8/88—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means
    • B60T8/885—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration with failure responsive means, i.e. means for detecting and indicating faulty operation of the speed responsive control means using electrical circuitry
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P21/00—Testing or calibrating of apparatus or devices covered by the preceding groups
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2250/00—Monitoring, detecting, estimating vehicle conditions
    • B60T2250/06—Sensor zero-point adjustment; Offset compensation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T2270/00—Further aspects of brake control systems not otherwise provided for
    • B60T2270/40—Failsafe aspects of brake control systems
    • B60T2270/411—Offset failure

Definitions

  • the invention is based on a method for generating a low-G acceleration signal according to the preamble of independent claim 1 and a device for generating a low-G acceleration signal according to the preamble of independent claim 6, as well as a computer program or a computer program product.
  • inertial sensors or simple acceleration sensors are used to determine vehicle movements, which are also referred to as low-G elements, since the sensors are operated in a low G range of approximately 0 to 2 g.
  • the measurement signals output by the sensors are conditioned and converted into corresponding acceleration signals with a given resolution and bandwidth in order to be used in various vehicle dynamics control systems such as ABS (Antilock Braking System) ESP (Electronic Stability Program), ASR (Traction Control System) and so on.
  • ABS Antilock Braking System
  • ESP Electronic Stability Program
  • ASR Traction Control System
  • acceleration sensors are generally used in these vehicles, which are also referred to as high-G elements, since the sensors are operated in high G ranges up to 200g.
  • the ones from the sensors output measured signals are also processed and converted into corresponding acceleration signals with a predetermined resolution and bandwidth to be used in various restraint systems for occupant protection or pedestrian protection can.
  • the generated acceleration signals of the high-G element are significantly broadband (about 400 Hz) than that of the low-G element (about 57 Hz), so that the resolution of the acceleration signals of the high-G element significantly lower than that the acceleration signals of the low-G element is.
  • the patent EP 1 419 938 B1 describes a method for controlling restraint centers.
  • the described method uses an acceleration sensor which is present anyway in the vehicle for detecting a crash occurring before a crash, which is actually intended for the measurement of high acceleration occurring in an actual crash in the vehicle longitudinal direction of up to 35 times the gravitational acceleration g.
  • the acceleration sensor used for the detection of high acceleration values is used, the output signal of the acceleration sensor correspondingly amplified and the maximum output signal of the acceleration sensor Amplifier is limited.
  • the inventive method for generating a low-G acceleration signal with the features of independent claim 1 and the device according to the invention for generating a low-G acceleration signal with the features of independent claim 6 have the advantage that a measurement signal from a high G-range measuring range, which is normally prepared and / or converted for activating restraint systems, for plausibility checking of an acceleration signal generated by processing and / or converting from a measuring signal from a measuring range in the low G range, which is provided by driving dynamics control systems, such as ESP, ABS, ASR, etc. is evaluated.
  • driving dynamics control systems such as ESP, ABS, ASR, etc.
  • the bandwidth of the acceleration signal for the high G range is reduced and the resolution is increased in an advantageous manner.
  • the existing offset of the high G range acceleration signal may be over-written or corrected with a more accurate long-term offset of the low G range acceleration signal.
  • the acceleration signal in the signal branch according to the invention is then used when a disturbance, for example an override of the acceleration signal for the low G range, is detected.
  • the resolution of the acceleration signal for the high G range is significantly lower than the resolution the acceleration signal for the low
  • the noise advantageously returns to a value corresponding to a root value of the factor k.
  • Root value of the factor k improved can be used to roughly validate the two acceleration signals or to replace the actual acceleration signal for the low G range in a detected accident by the high G range acceleration signal processed according to the invention.
  • the replacement of the acceleration signal for the low G range may be required to avoid a malfunction of the following driving dynamics control systems in case of failure. Such an accident can occur in unfavorable driving situations, for example by resonances in the transmission chain vehicle sensor measuring element.
  • a first acceleration signal is generated by conditioning and / or converting a first measurement signal having a first resolution and a first bandwidth in the low G range.
  • a second measurement signal from a predetermined second measurement range in the high G range is detected, from which by processing and / or conversion convert a second acceleration signal with a second resolution and a predetermined second bandwidth can be generated.
  • the second bandwidth is greater by a first factor than the first bandwidth.
  • a third acceleration signal having a third resolution and a third bandwidth is generated from the second measurement signal from the predetermined second measurement range in the high G range by conditioning and / or converting.
  • the third bandwidth is smaller by a predetermined second factor than the second bandwidth, and the third resolution is greater than the second resolution. Furthermore, normally the first acceleration signal and, in the event of a fault, the third acceleration signal or a fourth acceleration signal based on the third acceleration signal are output as the acceleration signal for the low G range.
  • a second signal conditioning device and a signal selection device are provided, wherein the second signal conditioning device generates a third acceleration signal having a third resolution and a predetermined third bandwidth by processing and / or converting the second measurement signal output by the second acceleration sensor, the third bandwidth being a predetermined second factor is smaller than the second bandwidth, wherein the third resolution is greater than the second resolution, and wherein the signal selector normally the first acceleration signal and in case of failure the third acceleration signal or based on the third acceleration signal of the fourth acceleration signal outputs as the acceleration signal for the low G range.
  • the device according to the invention is designed to carry out steps of the above-mentioned method and a computer program for controlling steps of the above-mentioned method when the computer program is executed by the device.
  • the device according to the invention can be understood to mean an electrical device, such as a control device, for example, which processes or evaluates detected sensor signals.
  • the device may have at least one interface, which may be formed in hardware and / or software.
  • the interfaces can be part of a so-called system ASIC, for example, which contains a wide variety of functions of the device.
  • the interfaces are their own integrated circuits or at least partially consist of discrete components.
  • the interfaces may be software modules that are present, for example, on a microcontroller in addition to other software modules.
  • a computer program product with program code which is stored on a machine-readable carrier, such as a semiconductor memory, a hard disk memory or an optical memory, and for
  • a range of values of the first acceleration signal is monitored, wherein a fault is detected when a current value of the first acceleration signal is significantly outside the first measuring range.
  • the monitoring of the value range of the first acceleration signal can be carried out for example by a fault detection device.
  • an offset value of the third acceleration signal is continuously overwritten with a long-term offset value of the first acceleration signal in order to generate the fourth acceleration signal.
  • the correction of the offset value of the third acceleration signal can be carried out, for example, by an offset correction device.
  • the acceleration signal for the low G range is output to at least one driving dynamics control system.
  • the second acceleration signal with the second resolution and the predetermined second bandwidth is generated by conditioning and / or converting the second measurement signal from the predetermined second measurement range in the high G range and output to at least one restraint system.
  • FIG. 1 shows a schematic block diagram of an exemplary embodiment of a device according to the invention for generating a low-G acceleration signal.
  • a device 20 for generating an acceleration signal a N G_Korr for a low G range in the illustrated exemplary embodiment comprises a first signal conditioning device 3, which can process and / or convert a first measurement signal continuously output by a first acceleration sensor 1 MSa N G generates a first acceleration signal a N G having a first resolution A1 and a predetermined first bandwidth B1, and a second signal conditioning device 4, which generates By processing and / or converting a second measurement signal MSa H G output by a second acceleration sensor 2, a second acceleration signal a H G is generated with a second resolution A2 and a second bandwidth B2.
  • the first acceleration sensor 1 has a predetermined first measuring range in the low G range
  • the second signal conditioning device 4 which can process and / or convert a first measurement signal continuously output by a first acceleration sensor 1 MSa N G generates a first acceleration signal a N G having a first resolution A1 and a predetermined first bandwidth B1
  • a second signal conditioning device 4 which generates By processing and / or converting
  • Acceleration sensor 2 has a predetermined second measuring range in the high G range, wherein the second bandwidth B2 is greater than the first bandwidth B1 by a first factor k.
  • the second acceleration signal a H G is output to at least one restraint system 30 present in the vehicle for further evaluation.
  • a third signal conditioning device 22 and a signal selection device 28 are provided.
  • the third signal processing device generates a third one by processing and / or converting the second measuring signal MSa H G output by the second acceleration sensor 2
  • the second factor k * is chosen such that it corresponds to the first factor k.
  • the third bandwidth B3 of the third acceleration signal a H G * corresponds approximately to the first bandwidth B1 of the first acceleration signal a N G
  • the third resolution A3 of the third acceleration signal a H G * corresponds approximately to the first resolution A1 of the first acceleration signal a N G in the normal case is the Sig- nalaus inches gifted 28, the first acceleration signal a N G
  • the third acceleration signal a H G * or on the third acceleration signal 3HG * based fourth acceleration signal a N G * as an acceleration signal a N G_Korr for the low G Range to at least one subsequent vehicle dynamics control system 40.
  • the device 20 for generating an acceleration signal a N G_Korr for a low G range comprises a fault detection device 26 which monitors a value range of the first acceleration signal a N G.
  • the fault detection device 26 detects a fault if a current value of the first acceleration signal a N G is clearly outside the first measuring range.
  • an offset rektur adopted 24 present which * overwrites an offset value of the third acceleration signal a H G continuously with a long-term offset value of the first acceleration signal a N o, in order to generate the fourth acceleration signal a N o *, which is output to the subsequent driving dynamics control systems 40th
  • the signal selection device 28 is designed as a switch, in the illustrated embodiment, depending on a control signal, which is transmitted from the fault detection device 26 via a signal path shown in dashed lines to the signal selector 28, between the first acceleration signal a N G and the fourth acceleration signal a N G * switches.
  • the signal selector 28 continuously compares the first acceleration signal a N G with the fourth acceleration signal a N G * irrespective of a detected incident to make the first acceleration signal a N G plausible.
  • the device 20 for generating an acceleration signal a N G_Korr for a low G range the first signal conditioning device 3, the second signal conditioning device 4 and the third signal processing device 22, which is also shown as a separate unit.
  • the functionality of the third signal conditioning device 22 can be integrated, for example, in the second signal conditioning device 4 and / or the first signal conditioning device 3 and the second signal conditioning device 4 as a separate units or as part of the acceleration sensors outside the device 20 for generating an acceleration signal a N G_Korr for a low G range can be arranged.
  • the device 20 is coupled to the signal conditioning means for generating a low G range acceleration signal a N G_Korr via respective interfaces.
  • Embodiments of the present invention can be realized as a circuit, device, method, data processing program with program code means and / or as a computer program product. Accordingly, the present invention may be fully embodied as hardware and / or software and / or a combination of hardware and / or software components. be led. In addition, the present invention may be embodied as a computer program product on a computer usable storage medium having computer readable program code, whereby various computer readable storage media such as hard disks, CD-ROMs, optical or magnetic storage elements, etc. may be used.
  • the computer usable or computer readable media may include, for example, electronic, magnetic, optical, electromagnetic infrared or semiconductor systems, devices, devices or distribution media.
  • the computer-readable media may include an electrical connection to one or more lines, a portable computer disk, a random access memory (RAM), a read only memory (ROM), an erasable and programmable read only memory (EPROM or flash memory)
  • RAM random access memory
  • ROM read only memory
  • the computer usable or computer readable medium may even be paper or other suitable medium on which the program is written and of which it is, for example by optical scanning of the paper or the other Medium is electrically detectable, then compiled, interpreted or if necessary processed in other ways and then stored in the computer memory.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne un procédé et un dispositif (20) pour générer un signal d'accélération pour une plage g peu élevée, un premier signal d'accélération (aNG) ayant une première résolution (A1) et une première largeur de bande (B1) étant généré par traitement et/ou conversion d'un premier signal de mesure (MSaNo) d'une première plage de mesure prédéfinie dans la plage g peu élevée, un deuxième signal de mesure (MSaNG) d'une deuxième plage de mesure prédéfinie étant détecté dans la plage g élevée, un deuxième signal d'accélération (aHG) ayant une deuxième résolution (A2) et une deuxième largeur de bande prédéfinie (B2) pouvant être généré par traitement et/ou conversion de ce deuxième signal de mesure, la deuxième largeur de bande (B2) étant plus grande que la première largeur de bande (B1) d'un premier facteur (k). L'invention concerne également un produit de programme d'ordinateur et un programme d'ordinateur. Selon l'invention, un troisième signal d'accélération (aHG*) ayant une troisième résolution (A3) et une troisième largeur de bande (B3) est généré par traitement et/ou conversion du deuxième signal de mesure (MSaHG), la troisième largeur de bande (B3) étant plus petite que la deuxième largeur de bande (B2) d'un deuxième facteur prédéfini (k*), la troisième résolution (A3) étant plus grande que la deuxième résolution (A2), et normalement, le premier signal d'accélération (aNβ) est émis, et en cas de défaillance, le troisième signal d'accélération (aHG*) ou un quatrième signal d'accélération (aNG*) basé sur le troisième signal d'accélération (aHG*) est émis comme signal d'accélération (aNG_Korr) pour la plage g peu élevée.
PCT/EP2011/052632 2010-04-22 2011-02-23 Procédé et dispositif pour générer un signal d'accélération pour une plage g peu élevée Ceased WO2011131392A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010028080.1 2010-04-22
DE201010028080 DE102010028080A1 (de) 2010-04-22 2010-04-22 Verfahren und Vorrichtung zur Erzeugung eines Beschleunigungssignals für einen niedrigen G-Bereich

Publications (1)

Publication Number Publication Date
WO2011131392A1 true WO2011131392A1 (fr) 2011-10-27

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PCT/EP2011/052632 Ceased WO2011131392A1 (fr) 2010-04-22 2011-02-23 Procédé et dispositif pour générer un signal d'accélération pour une plage g peu élevée

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DE (1) DE102010028080A1 (fr)
WO (1) WO2011131392A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107487355A (zh) * 2016-06-09 2017-12-19 丰田自动车株式会社 车辆用运行状况控制装置
CN110065462A (zh) * 2018-01-24 2019-07-30 现代自动车株式会社 车辆的安全气囊点火控制系统及其控制方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018205921A1 (de) 2018-04-18 2019-10-24 Robert Bosch Gmbh Verfahren zum Erzeugen eines Ausgangssignals

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1419938A2 (fr) * 1999-04-15 2004-05-19 Robert Bosch Gmbh Unité de commande pour actionner des appareils de retenue
DE102004010671A1 (de) * 2003-03-07 2004-09-16 Denso Corp., Kariya Datenübertragungssystem und Insassenschutzvorrichtung
DE102006012942A1 (de) * 2005-03-22 2006-10-05 Honda Motor Co., Ltd. Beschleunigungsdetektor
WO2007044921A1 (fr) * 2005-10-14 2007-04-19 Continental Automotive Systems Us, Inc. Mélange de capteurs pour produire des caractéristiques de capteurs alternatifs

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1419938A2 (fr) * 1999-04-15 2004-05-19 Robert Bosch Gmbh Unité de commande pour actionner des appareils de retenue
EP1419938B1 (fr) 1999-04-15 2007-07-04 Robert Bosch Gmbh Procédé pour actionner des appareils de retenue
DE102004010671A1 (de) * 2003-03-07 2004-09-16 Denso Corp., Kariya Datenübertragungssystem und Insassenschutzvorrichtung
DE102006012942A1 (de) * 2005-03-22 2006-10-05 Honda Motor Co., Ltd. Beschleunigungsdetektor
WO2007044921A1 (fr) * 2005-10-14 2007-04-19 Continental Automotive Systems Us, Inc. Mélange de capteurs pour produire des caractéristiques de capteurs alternatifs

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107487355A (zh) * 2016-06-09 2017-12-19 丰田自动车株式会社 车辆用运行状况控制装置
CN107487355B (zh) * 2016-06-09 2019-08-20 丰田自动车株式会社 车辆用运行状况控制装置
CN110065462A (zh) * 2018-01-24 2019-07-30 现代自动车株式会社 车辆的安全气囊点火控制系统及其控制方法
CN110065462B (zh) * 2018-01-24 2022-05-03 现代自动车株式会社 车辆的安全气囊点火控制系统及其控制方法

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