WO2012163319A1 - Procédé et dispositif d'étalonnage d'un capteur de distance disposé sur un cylindre - Google Patents

Procédé et dispositif d'étalonnage d'un capteur de distance disposé sur un cylindre Download PDF

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Publication number
WO2012163319A1
WO2012163319A1 PCT/DE2012/000457 DE2012000457W WO2012163319A1 WO 2012163319 A1 WO2012163319 A1 WO 2012163319A1 DE 2012000457 W DE2012000457 W DE 2012000457W WO 2012163319 A1 WO2012163319 A1 WO 2012163319A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
sensor
cylinder
sensor assembly
calibrating
Prior art date
Application number
PCT/DE2012/000457
Other languages
German (de)
English (en)
Inventor
Matthias Gramann
Tim Herrmann
Markus Dietrich
Original Assignee
Schaeffler Technologies AG & Co. KG
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 Schaeffler Technologies AG & Co. KG filed Critical Schaeffler Technologies AG & Co. KG
Publication of WO2012163319A1 publication Critical patent/WO2012163319A1/fr

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Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D11/00—Component parts of measuring arrangements not specially adapted for a specific variable
    • G01D11/24—Housings ; Casings for instruments
    • G01D11/245—Housings for sensors

Definitions

  • the invention relates to a device of a displacement sensor arranged on a cylinder with wegproportionalem output signal and / or switching thresholds having the features of the preamble of claim 1, and a method for performing the calibration with the features of the preamble of claim.
  • This sensor system is measured after assembly. Based on the determined data, an electrical calibration of the sensor is performed.
  • a disadvantage of these sensor systems is that they have a large air gap and have a complex, tainted with integration.
  • the measuring ranges of the sensors must cover all possible tolerances, whereby the sensor accuracy is highly dependent on the mechanical tolerances.
  • the penetration of interfering contours eg the sealing on the bulkhead
  • the calibration of the sensor system must be carried out electronically and by software.
  • the object of the invention is to realize with a method and a device, the detection of the piston stroke (linear travel and / or switching thresholds) within a hydraulic cylinder.
  • This object is achieved with a device for calibrating a cylinder
  • This integration is advantageously realized by a permanent connection.
  • the object is also achieved with a method for carrying out the calibration of a arranged on a housing of a cylinder displacement sensor having the features of claim 3.
  • connection of sensor assembly and housing or the connection of sensor and housing is already calibrated mechanically during the assembly process.
  • Figure 1 shows a first embodiment of an integrated in the housing of a cylinder
  • Figure 2 is a section through the cylinder housing of this embodiment with sensor assembly
  • FIG. 3 shows the fixing of the sensor module in the cylinder housing according to FIG. 1;
  • Figure 4 shows a second embodiment of an integrated in the housing of a cylinder
  • Figure 5 shows a section through the cylinder housing of the second embodiment
  • FIG. 6 is a perspective view of the second embodiment according to FIG. 4.
  • FIG. 1 shows a sensor assembly 10, which is integrated in a pocket provided by means of an injection process in the plastic housing 1 of the cylinder.
  • This sensor assembly 10 consists of a populated printed circuit board 4 and a plug 2.
  • the plug 2 is in this case designed so that the geometry simultaneously acts as a cover for a housing opening 7 (see Figure 3). By an overlap of the housing 1 and plug geometry, a degree of freedom in the axial direction is generated.
  • the moving element, the target 5 is fixed in a defined absolute position. This can be ensured for example by a highly accurate reference measuring system.
  • the printed circuit board 4 is positioned in the pocket so that an expected output signal matching the position of the sensor assembly 10 is measured. As a result, a relationship between the sensor assembly 10 and target 5 is produced, which is largely independent of possible axial tolerances. By doing so, an absolute relationship between stationary and moving part 5 of the entire sensor system 10 can be established.
  • the required measuring range of the sensor system 10 can be reduced since the mechanical tolerances are largely eliminated by the calibration.
  • support surfaces 8 within the plastic bag or a recess in the housing 1 are required. These bearing surfaces 8 can be formed, for example, as ribs 11, as shown in Figures 1 and 2.
  • a further rib 11 can be provided above the printed circuit board 4, which due to the spring effect of the sleeve, applies a force to the printed circuit board 4.
  • a fixation of the sensor assembly 10 may after the mechanical adjustment by
  • the opening 7 shown in Figure 3 is used for fastening, or for fixing the sensor assembly 10 in the previously set position. This can be done for example by laser welding. If the chosen method of attachment does not guarantee the tightness between housing 1 and plug 2, a sealing element 6 in the form of, for example, a sealing ring can additionally be provided, as shown in FIG. In this case, the opening 7 shown in this figure 3 or for fixing the sensor assembly 10 in the previously set position is used. This can be done for example by laser welding. In this case, the construction is to be carried out so that a sinking of the plastic during the laser welding process is ensured.
  • Another advantage of this design is given by the possibility of penetrating axial interference contours (eg sealing surfaces between the engine compartment and the passenger compartment). By forming a pocket, the axial space can be extended without compromising the tightness of the connection.
  • axial interference contours eg sealing surfaces between the engine compartment and the passenger compartment.
  • Sensor assembly 10 are also made of a cover 9 with circuit board 4 and connector 2, as shown in Figure 4. Thus arises after placing the sensor assembly 10 on the housing 1, a degree of freedom in the axial direction. However, in this case possible axial tolerances in the formation of the size of the plastic bag, the circuit board 4 and the Decket 9 must be considered.
  • a groove 13 in the housing 1 with a corresponding counterpart in the cover 9 can be realized, as shown in Figure 5.
  • Ad / on sensors 12 can also be modified in such a way that mechanical calibration is possible (see FIG.
  • the housing 1 is thereby expanded by two axial guide webs, which are guided in rails on the plastic cylinder.
  • this sensor 12 is moved axially until its optimum position is reached. Thereafter, this is mechanically fixed, for example by means of gluing, welding or a clip connection.
  • the connection can, as shown in FIG or housing 1 with the sensor assembly 10 are also produced by laser welding.
  • Figure 6 shows a perspective view of the second embodiment of the device according to the invention.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

L'invention concerne un dispositif d'étalonnage d'un capteur de distance disposé sur un cylindre à l'aide d'un signal de sortie proportionnel à la distance et/ou des seuils de commutation, et un procédé de mise en œuvre de l'opération d'étalonnage. Ensuite un module détecteur intégré dans un évidement d'un boîtier et constitué d'un connecteur mâle et d'une carte imprimée, ou bien un détecteur est étalonné dès l'opération de montage puis est relié au boîtier de manière non détachable.
PCT/DE2012/000457 2011-05-31 2012-05-04 Procédé et dispositif d'étalonnage d'un capteur de distance disposé sur un cylindre WO2012163319A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011102899.8 2011-05-31
DE102011102899 2011-05-31

Publications (1)

Publication Number Publication Date
WO2012163319A1 true WO2012163319A1 (fr) 2012-12-06

Family

ID=46275639

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2012/000457 WO2012163319A1 (fr) 2011-05-31 2012-05-04 Procédé et dispositif d'étalonnage d'un capteur de distance disposé sur un cylindre

Country Status (2)

Country Link
DE (1) DE102012207417A1 (fr)
WO (1) WO2012163319A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105041761A (zh) * 2015-06-08 2015-11-11 北京精密机电控制设备研究所 一种伺服作动器零位调整装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102014217705A1 (de) * 2013-10-02 2015-04-02 Schaeffler Technologies Gmbh & Co. Kg Kolben-Zylinder-Anordnung
CN103697818B (zh) * 2013-12-12 2016-07-27 中国科学院长春光学精密机械与物理研究所 基于单自由度柔性微动调整机构的微位移传感器标定装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043996A1 (fr) * 2000-11-29 2002-06-06 Lucas Automotive Gmbh Dispositif pour la determination de positions et de mouvements d'une pedale de frein pour un systeme de freinage de vehicule
DE202008007384U1 (de) * 2008-06-03 2009-10-29 Sick Ag Vorrichtung zur lösbaren Verbindung eines Sensors

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002043996A1 (fr) * 2000-11-29 2002-06-06 Lucas Automotive Gmbh Dispositif pour la determination de positions et de mouvements d'une pedale de frein pour un systeme de freinage de vehicule
DE202008007384U1 (de) * 2008-06-03 2009-10-29 Sick Ag Vorrichtung zur lösbaren Verbindung eines Sensors

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105041761A (zh) * 2015-06-08 2015-11-11 北京精密机电控制设备研究所 一种伺服作动器零位调整装置

Also Published As

Publication number Publication date
DE102012207417A1 (de) 2012-12-06

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