EP2260315A2 - Détecteur de hall diagnostiquable - Google Patents

Détecteur de hall diagnostiquable

Info

Publication number
EP2260315A2
EP2260315A2 EP09726784A EP09726784A EP2260315A2 EP 2260315 A2 EP2260315 A2 EP 2260315A2 EP 09726784 A EP09726784 A EP 09726784A EP 09726784 A EP09726784 A EP 09726784A EP 2260315 A2 EP2260315 A2 EP 2260315A2
Authority
EP
European Patent Office
Prior art keywords
hall
diagnostic
sensor device
sensor
voltage
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Withdrawn
Application number
EP09726784A
Other languages
German (de)
English (en)
Inventor
Andreas Peukert
Wolfgang Kliemannel
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen AG
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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Publication of EP2260315A2 publication Critical patent/EP2260315A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
    • G01R33/07—Hall effect devices
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/14—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks
    • G01R15/20—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices
    • G01R15/202—Adaptations providing voltage or current isolation, e.g. for high-voltage or high-current networks using galvano-magnetic devices, e.g. Hall-effect devices, i.e. measuring a magnetic field via the interaction between a current and a magnetic field, e.g. magneto resistive or Hall effect devices using Hall-effect devices

Definitions

  • the invention relates to a measuring device for determining the position of a sensor device with a Hall probe according to the preamble of patent claim 1.
  • Hall probes are known in the art.
  • Hall probes consist of a conductive sensor surface, which is flowed through by a supply current. If a magnetic field now interacts with the sensor surface through which the current flows, due to the Lorentz force on the moving electrical charge carriers in the sensor surface, the charge carriers are deflected transversely to their direction of movement. As a result, an electric field and a voltage measurable between the two lateral edges of the sensor surface voltage is generated.
  • This known as Hall voltage voltage is proportional to the product of the magnetic flux density of the magnetic field acting on the sensor and the sensor surface flowing through the feed current.
  • the magnetic flux density acting on the sensor can be determined down to a proportionality factor, wherein the proportionality factor is mainly dependent on the geometric dimensions of the sensor surface.
  • Hall probes or Hall sensors are known, for example, in the form of integrated Hall sensor components, wherein the actual Hall sensor is followed by a processing device which processes the Hall signal output by the Hall sensor for evaluation and outputs an output signal resulting from the Hall signal. Both the Hall sensor and the processing device can be integrated in a single housing.
  • Hall sensors can be used, for example, to determine relative positions of two mechanical components in a contact-free and wear-free manner.
  • a Hall sensor is arranged on one of the two mechanical components, while a magnetic field-generating component, preferably a permanent magnet, is arranged on the other of the two mechanical components.
  • the strength and / or the angle of the magnetic field lines of the magnetic field generating component at the location of the Hall sensor, and thus the Hall voltage generated by the Hall sensor changes.
  • the change in the relative position of the two mechanical components can be registered, and in the case of a corresponding calibration of the Hall sensor also measured or quantified.
  • Hall sensor components can not be adequately checked when installed or during operation so that the defect is not detected.
  • the prior art still offers fewer possibilities with regard to the diagnosis not only of the Hall sensor element itself, but also of the evaluation electronics associated with the Hall sensor, which, together with the actual sensor element, is usually accommodated in a uniform chip housing.
  • a Hall sensor component is known in which a diagnosis of the Hall sensor in the installed state can be carried out by cyclically changing the current flowing through the Hall sensor component, and by deducing from a corresponding change in the sensor output voltage on the functionality of the sensor.
  • the object of the present invention to provide a diagnosable sensor device with a Hall probe, or a method for functional diagnosis of a Hall sensor device, with which a comprehensive diagnosis of the sensor device can take place.
  • the invention should make it possible to carry out a diagnosis of the Hall sensor component as well as the evaluation of the Hall sensor device. Moreover, not only a qualitative, but also a quantitative diagnosis of
  • Sensor device are made possible, whereby a calibration of the sensor device, or an elimination of measurement errors should be made possible, which occur for example due to changing environmental conditions.
  • the measuring device serves to determine the field strength of a magnetic field.
  • the measuring device comprises a sensor device with at least one Hall probe.
  • the Hall probe is set up to generate a Hall voltage as a function of the magnetic field penetrating the Hall probe as well as as a function of a feed current flowing through the Hall probe.
  • the measuring device is characterized by a galvanically isolated from the Hall probe, preferably in the immediate vicinity of the Hall probe arranged electrical diagnostic conductor, as well as by a driver device for generating a specific electrical diagnostic current through the diagnostic director.
  • the diagnostic conductor by means of which a specific electrical diagnostic current is conducted by means of the driver device, generates a magnetic field caused by the diagnostic current, which in turn acts on the Hall probe.
  • a Hall voltage of a certain size is generated in the Hall probe.
  • This Hall voltage caused by the diagnostic current can be evaluated and, as a result of the evaluation, conclusions can be drawn regarding the function of the Hall probe as well as the function of the evaluation electronics of the Hall probe.
  • a relationship between the size of the diagnostic current and the size of the resulting Hall voltage can be produced because a particular size of the diagnostic current is assigned a specific magnetic field strength of the diagnostic conductor and thus a certain setpoint associated with this magnetic field strength Hall voltage.
  • a corresponding correction value is determined. This allows, for example, a temperature compensation of the Hall probe, so that the accuracy, reliability and temperature stability of the Hall probe can be significantly improved.
  • diagnosable magnetic field sensors which can preferably be used where, for safety reasons, a reliable detection of the failure of the sensor is required, for example, to prevent damage to persons or facilities in case of failure of sensors.
  • the measuring device is also able to test the functionality of the Hall sensor or of the evaluation electronics without the need for an external magnetic field, as is the case with the cited prior art , Rather, the magnetic field underlying the diagnosis is generated according to the invention by the diagnostic conductor and the diagnostic current itself, which has the additional advantage that the field strength of the diagnostic magnetic field is known, or can be adjusted as required.
  • a mechanical distortion of the Hall probe can be detected or diagnosed, since this leads to a corresponding distortion of the Hall voltage, which, however, can be registered on the basis of the diagnostic current known according to the invention and the diagnosis magnetic field also known therewith.
  • the galvanic isolation between the diagnostic conductor and the Hall probe contributes to a particularly reliable diagnosis as well as to a protection of the Hall probe from the diagnostic voltage or the diagnostic current.
  • the invention can first be realized regardless of what type and size of the diagnostic current, as long as the variables determining the diagnostic current are known, from which the field strength of the diagnostic magnetic field and thus also the desired size of the Hall voltage generated by the diagnostic magnetic field can be calculated ,
  • the diagnostic current has a cyclically varying current intensity in a known manner, or the diagnostic current is impressed on a fixed, known pulse pattern.
  • the advantageous results Ability to split the Hall voltage delivered by the Hall probe into a measured sub-voltage and a diagnostic sub-voltage. This is advantageous insofar as a complete, possibly quantitative, diagnosis of the Hall probe can thus also take place if external magnetic fields or interference magnetic fields of known or unknown size are present.
  • a corresponding pulse pattern can also be detected at the Hall voltage output by the Hall probe.
  • a separation between the optionally superimposed with a measurement signal diagnostic signal and the measurement signal can thus take place.
  • the amplitude of the pulses present in the Hall voltage can be measured, whereupon, based on this measured amplitude and on the basis of the known amplitude of the diagnostic current, a complete diagnosis of the measuring device or the Hall probe can again take place, as described above.
  • the Hall probe and the diagnostic conductor are arranged or encapsulated together in a probe housing.
  • a probe housing This may in particular be a chip housing in which the Hall probe and its evaluation as well as the diagnostic conductor are housed.
  • This has the advantage that the relative position between the diagnostic conductor and the Hall probe is set exactly and invariably, so that no separate calibration of the magnetic field generated by the diagnostic conductor in the region of the Hall probe has to take place. Furthermore, this results in an optimal protection of the diagnostic conductor and optimal handling of the sensor device.
  • a further preferred embodiment of the invention provides that the sensor device is an integrated current measuring sensor.
  • the diagnostic conductor is formed by the shunt resistor or measuring shunt arranged in the chip housing of the current measuring sensor, wherein the current measuring sensor is not used in this case to measure an unknown current intensity, but instead by measuring a known current intensity in the form of the diagnostic current a magnetic field unknown size with simultaneous diagnosis of the sensor and the transmitter is used.
  • the measuring device is characterized by an additional magnet which is movably arranged relative to the sensor device or to the Hall probe.
  • the sensor device and the magnet are arranged so as to be rotatable relative to one another or displaceable relative to one another.
  • Hall sensor measuring devices are used in particular for the low-wear and low-friction determination of the switching position of operating levers.
  • actuators can - for determining the current switching state of the transmission operating lever in the passenger cabin - be arranged for example on the operating lever, a magnet which generates a magnetic field of a certain size in the effective range of the sensor device or the Hall probe of the sensor device at a certain switching position.
  • the measuring device according to the invention is thus used for this application on the motor vehicle, faults or a failure of the sensor device can easily be detected by a diagnostic electronics arranged in the motor vehicle and correspondingly diagnosed. It is also possible by means of arranged in the motor vehicle diagnostic electronics permanently the functionality of the in the To monitor transmission actuator used Hall sensor device and correct if necessary. If faults or failures of the sensor device are detected, it is possible to signal this to the driver or to run a safety program assigned to the failure. In this way, a possible incorrect operation of the transmission can be prevented and thus a possible damage by the driver or the vehicle can be averted.
  • the invention further relates to a method for functional diagnosis of a Hall sensor device.
  • the Hall sensor device comprises at least one Hall probe, a galvanically isolated from the Hall probe diagnostic conductors and a driver device.
  • the driver device serves to impress a variable with a predetermined amplitude waveform electrical diagnostic current to the diagnostic ladder.
  • the method according to the invention comprises the following method steps.
  • a defined supply current is generated by the control electronics of the sensor device, which flows through the Hall probe as a prerequisite for the measurement of Hall voltages.
  • the determination of the Hall voltage generated by the Hall probe which is split in a further method step in the measurement sub-voltage and the diagnostic sub-voltage.
  • the splitting of the Hall voltage into the measured partial voltage and the diagnostic partial voltage can in principle be effected by simple subtraction, since the amplitude characteristic of the diagnostic current and thus the nominal size of the Hall voltage produced by the diagnostic current are known.
  • the measurement partial voltage of the Hall probe can thus be determined, the measurement partial voltage of the Hall probe.
  • both the measured partial voltage - as a measure of an external magnetic field acting approximately on the Hall probe - and the diagnostic partial voltage - as a measure of the magnetic field generated by the diagnostic current - are known and can subsequently be used in a further method step be evaluated separately.
  • the inventive method thus enables a permanent diagnosis of the Hall sensor device even during normal operation. Due to the superimposition of the diagnostic magnetic field generated by means of diagnostic current and diagnostic conductor with a possible external magnetic field, for example, a permanent magnet and subsequent re-separation of the signal of the Hall probe in the diagnostic sub-voltage and the measuring sub-voltage, no mutual influence of the measurement and diagnostic signals takes place.
  • the method according to the invention not only can a qualitative diagnosis be made as to whether the function of the Hall sensor device is given or not, but also a quantitative diagnosis as to whether the Hall probe signal is correct and proportional to the particular magnetic field present. For this reason, thanks to the method according to the invention, it is also possible to carry out permanent monitoring and, if appropriate, calibration of the Hall probe. This may be necessary, for example, when signal distortions have occurred due to temperature drift or due to mechanical stresses of the Hall probe.
  • the method according to the invention can first of all be realized independently of which amplitude variation the variable electrical diagnostic current has, as long as this profile is known or exactly predeterminable and thus the diagnosis partial voltage can be separated again from the measured partial voltage by subtraction.
  • the electrical diagnostic current has a pulse-shaped amplitude characteristic.
  • the pulse-shaped amplitude characteristic is particularly advantageous in that the pulses are due to their high Slope steepness particularly simple and accurate in the output signal of the Hall probe detect and thus can be reliably separated from the measuring partial voltage.
  • an evaluation of the number of pulses detected within a predetermined time, or an evaluation of the amplitude of the pulses takes place within the scope of the evaluation of the output signal of the Hall probe.
  • the evaluation of the number of pulses can be carried out in particular in the context of a simpler, qualitative diagnosis of the Hall sensor device in which a failure of the sensor device can be inferred if not the same number of pulses is registered within a certain specified time as the Number of pulses of the injected diagnostic current corresponds.
  • the evaluation of the pulse amplitude of the diagnostic partial voltage in particular also enables a quantitative diagnosis or calibration of the sensor device, as described above.
  • a magnet is arranged on a relative to the sensor device movable member.
  • a determination of the relative position between the sensor device and the magnet takes place on the basis of the measured partial voltage.
  • the position of the selector lever of a vehicle gear change transmission is thus detected by the sensor device or the magnet are arranged on a pedestal or on the selector lever of the actuator so that upon movement of the selector lever, a relative movement between the sensor device and the magnet takes place.
  • This relative movement leads to a change in the effective magnetic field of the magnet in the region of the sensor device or in the region of the Hall probe of the sensor device, whereby - after appropriate calibration - can be closed to the respective relative position between the selector lever and the base of the actuator.
  • Fig. 1 is a schematic view of the sensor device a
  • FIG. 2 in a representation corresponding to Fig. 1, an embodiment of a measuring device according to the present invention
  • FIG. 3 is a schematic diagram of the output voltage of the Hall probe of the measuring device according to FIG. 2 in idle mode
  • FIG. 4 in a representation corresponding to FIG. 3, the output voltage of the Hall probe of the measuring device according to FIG. 2 and FIG. 3 during operation;
  • FIG. 6 in a Fig. 5 corresponding representation of the arrangement of sensor device and magnet of FIG. 6 in the bottom view.
  • Fig. 1 shows in a highly schematically executed
  • Circuit diagram of the sensor device 1 of a measuring device according to an embodiment of the present invention.
  • the four edges are connected in the usual way with an electronic supply and evaluation circuit 3.
  • the Hall probe 2 can be acted upon by the supply current necessary for the occurrence of the Hall effect, and it can be tapped at the occurrence of magnetic fields at the parallel to the feed current side edges of the Hall probe 2, the corresponding Hall voltage and registered become .
  • the illustrated sensor device 1 comprises a galvanically isolated from the Hall probe 2 diagnostic conductor 4, which is a
  • Driver device 8 (not shown in Fig. 1, see Fig. 2) can be fed such that a certain electrical diagnostic current in the diagnostic conductor 4 flows.
  • the diagnostic current flowing through the diagnostic conductor 4 causes a magnetic field 5 caused by the diagnostic current to build up around the diagnostic conductor.
  • This magnetic field 5 also passes through the Hall probe 2 and thus leads there to produce a corresponding Hall voltage at the parallel to the feed current through the Hall probe 2 extending two edges of the Hall probe. 2
  • the Hall voltage is received by the evaluation circuit 3 of the sensor device, amplified and output as a corresponding signal via an output 6 of the sensor device.
  • FIG. 2 shows how the sensor device 1 from FIG. 1 is integrated into a measuring device according to the invention.
  • a magnet 7 which is movable relative to the sensor device 1 is initially recognizable in FIG.
  • the measuring device comprises a driver device 8, a series resistor 9 and a
  • Control electronics 10 coordinates the entire processes that are required for the diagnosis of the sensor device 1 according to the invention.
  • the rectangular signal 11 is amplified by the driver device 8 and imprinted in the form of a pulsating diagnostic current 12 with a rectangular amplitude characteristic to the diagnostic device 4 arranged in the sensor device 1.
  • the measuring device comprises the series resistor 9. At the series resistor 9 falls to the course of the diagnostic current 12 respectively proportional, as well as the diagnostic current 12 pulse-shaped control voltage 13, which in turn is fed to the control electronics 10.
  • control electronics 10 is still connected to the output 6 of the sensor device 1, so that the correspondingly reinforced Signal 14 of the Hall probe 2 of the control electronics 10 is supplied.
  • the signal 14 of the Hall probe 2 emitted by the sensor device 1 initially represents a summation signal 14 which corresponds to the superimposed magnetic field of both the magnet 7 and the diagnostic conductor 4 prevailing at the location of the Hall probe 2.
  • the current through the diagnostic circuit 4 and thus the size of the magnetic field generated by the diagnostic 4 5 in the Hall probe 2 is known. Because of these known correlations, the setpoint diagnostic signal generated by the Hall probe 2 can thus be calculated and thus also eliminated again from the summation signal 14 or separated from the summation signal 14 by superposition with the sum signal 14 emitted by the Hall probe 2 the resulting on the magnet 7, pure analog signal of the Hall probe results.
  • FIGS. 3 and 4 show examples of the sum signal 14 output by the sensor device 1, the sum signal 14 initially resulting, as explained above, from a superposition of the magnetic fields of the magnet 7 and of the diagnostic conductor 4.
  • Fig. 3 shows the output voltage or the sum signal 14 of the sensor device 1 in the case of the standstill of the magnet 7 relative to the sensor device 1, so for example the signal of the sensor device 1 of an actuator for a gear change in the case of stationary motion lever. It can be seen that the measured signal 15 applied along the vertical axis remains constant as a component of the sum signal 14 over time (right-hand axis). From the height of the measuring partial voltage 15 of the sum signal 14 can be closed on the distance between the magnet 7 and the sensor device 1, or in the example to the absolute position of the transmission operating lever.
  • the sum signal 14 of the sensor device 1 shows the sum signal 14 of the sensor device 1, as it results in the case of a non-uniform movement of the magnet 7 relative to the sensor device 1, or in the case of a corresponding movement of a equipped with the sensor device 1 gear actuating lever.
  • the sum signal 14 consists of a superimposition of the measuring partial voltage 15 on the one hand, which results from the magnetic field of the magnet 7, and the diagnostic partial voltage 16 on the other hand, resulting from the pulsating magnetic field 5 of the diagnosis 4.
  • a quantitative diagnosis or calibration of the sensor device 1 can be carried out by comparing the actual diagnostic partial voltage 16 output by the sensor device 1 with the desired diagnostic signal calculated by the control electronics 10. If, for example, the amplitude of the actual diagnostic signal 16 is greater than the calculated or stored desired value of this amplitude, then a corresponding correction (in this case a reduction) of the supply current conducted through the Hall probe 2 can take place until the measured actual value of the amplitude of the diagnosis Sub-voltage 16 again coincides with the desired value. In this way, for example, a temperature drift of the Hall probe 2, or a mechanical strain of the Hall probe 2 detected and optionally automatically compensated, which can significantly improve the reliability and measurement accuracy of the measuring device.
  • FIGS. 5 and 6 show another embodiment of the measuring device according to the present invention.
  • a pan-shaped housing 17 which is preferably formed from metal, is initially recognized, in order to ensure optimum shielding of the sensor device 1 against interference fields.
  • the housing 17 is connected via a boom 18 in engagement with a movable coupling pin 19, wherein the movable coupling pin 19 is in turn connected to a (not shown) selector lever of a gear change transmission, and thus follows the movements of the selector lever.
  • a substantially circular-arc-segment-shaped permanent magnet 7 is arranged in the interior of the housing 17 and also has a thickness which increases linearly along its arcuate shape in the manner of an inclined plane.
  • the permanent magnet 7 acts on the also recognizable in Fig. 6 sensor device 1, which is not connected to the housing 17, but for example, on the (not shown here) base of the actuator is attached. This means that in the case of rotational movements of the housing 17 and the permanent magnet 7 connected to the housing, the effective distance between the permanent magnet 7 and the sensor device 1 changes proportionally to the angle of rotation of the housing.
  • the rotation angle position of the housing 17 can be determined based on evaluation of the measuring partial voltage 15 of the sensor 1.
  • a permanent check and optionally automatic calibration of the sensor 1 can take place at the same time, as explained above.
  • the Sensor device 1 permanently monitored for function and any failures, and it may be initiated in case of failure any emergency programs or the user will be notified accordingly.
  • the sensor device 1 can also be provided twice in the sense of further increasing the system availability, redundancy and reliability. In other words, this means that at least the sensor device 1 comprising the Hall sensor 2 and the diagnostic conductor 4 is present in duplicate.
  • the control electronics 10 can only be designed simply for reasons of cost, in which case the number of sensor contacts of the control electronics 10 - corresponding to the double-existing sensor device 1 - is likewise doubled.
  • the invention provides a diagnosable sensor device or a method for functional diagnosis of a sensor device, which have significant advantages, in particular with regard to reliability and measurement accuracy.
  • the sensor device according to the invention and the method according to the invention allow the complete and permanent quantitative diagnosis and calibration of a Hall sensor component, whereby measurement errors, for example due to temperature drift or mechanical stresses, can be eliminated. LIST OF REFERENCE NUMBERS

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  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Magnetic Variables (AREA)

Abstract

L'invention concerne un dispositif de mesure pour la détermination d'intensités de champs magnétiques au moyen d'une sonde de Hall (2), et un procédé de diagnostic de fonctionnement d'un dispositif de détection de Hall (1). Le dispositif de mesure comporte un dispositif de détection (1) comportant une sonde de Hall (2), et se caractérise par un conducteur de diagnostic électrique (4) séparé galvaniquement de la sonde de Hall (2). Le détecteur de Hall diagnostiquable (1) et le procédé de diagnostic de fonctionnement d'un détecteur de Hall (2) permettent de réaliser un diagnostic complet permanent du dispositif de détection (1) ou du détecteur de Hall (2). Le détecteur de Hall (2) ne peut pas seulement être contrôlé qualitativement en ce qui concerne son fonctionnement ou une panne, mais aussi quantitativement en ce qui concerne son étalonnage correct, et une correction ou un ré-étalonnage immédiats du détecteur peuvent être réalisés (2). Des erreurs de mesure notamment liées à un décalage de température ou à des déformations mécaniques du détecteur (2) peuvent ainsi être éliminées.
EP09726784A 2008-04-02 2009-04-02 Détecteur de hall diagnostiquable Withdrawn EP2260315A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008000943.1A DE102008000943B4 (de) 2008-04-02 2008-04-02 Diagnostizierbarer Hallsensor und Verfahren zur Funktionsdiagnose einer Hall-Sensoreinrichtung
PCT/DE2009/050012 WO2009121352A2 (fr) 2008-04-02 2009-04-02 Détecteur de hall diagnostiquable

Publications (1)

Publication Number Publication Date
EP2260315A2 true EP2260315A2 (fr) 2010-12-15

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09726784A Withdrawn EP2260315A2 (fr) 2008-04-02 2009-04-02 Détecteur de hall diagnostiquable

Country Status (7)

Country Link
US (1) US8362764B2 (fr)
EP (1) EP2260315A2 (fr)
JP (1) JP5599112B2 (fr)
KR (1) KR101528651B1 (fr)
CN (1) CN101983340A (fr)
DE (1) DE102008000943B4 (fr)
WO (1) WO2009121352A2 (fr)

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JP5599112B2 (ja) 2014-10-01
WO2009121352A3 (fr) 2009-11-26
KR101528651B1 (ko) 2015-06-12
JP2011516842A (ja) 2011-05-26
KR20110021718A (ko) 2011-03-04
US20110018534A1 (en) 2011-01-27
CN101983340A (zh) 2011-03-02
WO2009121352A2 (fr) 2009-10-08
US8362764B2 (en) 2013-01-29
DE102008000943A1 (de) 2009-10-15

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