| 54 |
Title |
TI |
[DE] Magnetsensor-Anordnung
[EN] Magnetic Sensor Arrangement
[FR] Arrangement de capteur magnétique |
| 71/73 |
Applicant/owner |
PA |
NXP BV, NL
|
| 72 |
Inventor |
IN |
JEGENHORST NIELS, DE
;
KREY MARTIN, DE
;
RIEMSCHNEIDER KARL-RAGMAR, DE
|
| 22/96 |
Application date |
AD |
Jul 30, 2012 |
| 21 |
Application number |
AN |
12178415 |
|
Country of application |
AC |
EP |
|
Publication date |
PUB |
Feb 5, 2014 |
33
31
32 |
Priority data |
PRC
PRN
PRD |
|
| 51 |
IPC main class |
ICM |
G01P 3/487
(2006.01)
|
| 51 |
IPC secondary class |
ICS |
G01P 21/02
(2006.01)
G01P 3/488
(2006.01)
G01P 3/489
(2006.01)
|
|
IPC additional class |
ICA |
|
|
IPC index class |
ICI |
|
|
Cooperative patent classification |
CPC |
G01P 21/02
G01P 3/487
G01P 3/488
G01P 3/489
|
|
MCD main class |
MCM |
G01P 3/487
(2006.01)
|
|
MCD secondary class |
MCS |
G01P 21/02
(2006.01)
G01P 3/488
(2006.01)
G01P 3/489
(2006.01)
|
|
MCD additional class |
MCA |
|
| 57 |
Abstract |
AB |
[EN] A magnetic sensor arrangement for determining an operating state of a magnetic sensor is provided. The magnetic sensor arrangement comprises a magnetic sensor being adapted to provide an output voltage being modulated by a movement of an encoder component, the encoder component providing a periodic changing magnetic field being generated due to a relative movement of the encoder component in relation to the magnetic sensor arrangement, and a sensor control unit being coupled to the magnetic sensor. The sensor control unit is adapted to receive the output voltage signal of the magnetic sensor, wherein the output voltage signal is a function of time, to change the reference quantity from time to rotational angle by mapping the output voltage signal to a converted signal being a function of rotational angle such that spectral signal power portions of the converted signal are associated with orders of the encoder rotational speed, to determine a first signal power being indicative for a first portion of orders of the encoder rotational speed, to determine a second signal power being indicative for a second portion of orders of the encoder rotational speed, to determine a ratio of the first signal power and the second signal power, the ratio being indicative for a signal distortion of the output voltage signal, and to determine the operating state of the magnetic sensor based on the determined ratio. Mounting errors, e.g. incorrect air gap distance between sensor and encoder or wrong orientation of the sensor can be identified in this way. |
| 56 |
Cited documents identified in the search |
CT |
EP000000323696A2
US020040186680A1
US020120032669A1
WO002011126462A1
|
| 56 |
Cited documents indicated by the applicant |
CT |
DE000019650935A1
DE102006036270A1
|
| 56 |
Cited non-patent literature identified in the search |
CTNP |
|
| 56 |
Cited non-patent literature indicated by the applicant |
CTNP |
"Magnetic Sensors", 1989, VCH 1;
DIBBERN, U.: "Magnetoresitive Sensors, Chap. 9 in Sensors - A Comprehensive Survey", vol. 5 1
|
|
Citing documents |
|
Determine documents
|
|
Sequence listings |
|
|
|
Search file IPC |
ICP |
G01D 5/244
G01P 21/02
G01P 3/487
G01P 3/488
|
