Global patent index - EP 0977997 A2

EP 0977997 A2 2000-02-09 - METHOD FOR DETECTING THE DIRECTION OF ROTATION OF A WHEEL BY MEANS OF HALL PROBES

Title (en)

METHOD FOR DETECTING THE DIRECTION OF ROTATION OF A WHEEL BY MEANS OF HALL PROBES

Title (de)

VERFAHREN ZUR ERKENNUNG DER DREHRICHTUNG EINES RADES MITTELS HALL-SONDEN

Title (fr)

PROCEDE POUR DETECTER LE SENS DE ROTATION D'UNE ROUE AU MOYEN DE SONDES DE HALL

Publication

EP 0977997 A2 (DE)

Application

EP 98931990 A

Priority

  • DE 9801140 W
  • DE 19717364 A

Abstract (en)

[origin: DE19717364C1] The method the use of Hall effect probes arranged in the peripheral direction of the wheel (1). They are arranged so that the second probe (15) is positioned centrally between the first (14) and the third (16) probes providing output signals (S1,S2,S3) respectively. Two evaluation signals are derived from the three output signals, the first (A) by subtracting output signal (S3) from (S1) and the second (B) by adding (S1) and (S3) from the sum of which double the value of (S2) is subtracted. One of the evaluation signals (A,B) is sampled passing through zero and the sign of the other checked. With reference to the sampled signal each sign is assigned a direction of rotation

IPC 1-7 (main, further and additional classification)

G01P 1/00

IPC 8 full level (invention and additional information)

G01D 5/14 (2006.01); G01D 5/245 (2006.01); G01P 13/04 (2006.01)

CPC (invention and additional information)

G01P 13/045 (2013.01); G01D 5/147 (2013.01); G01D 5/2451 (2013.01)

Citation (search report)

See references of WO 9848284A3

Designated contracting state (EPC)

DE ES FR GB IT SE

EPO simple patent family

DE 19717364 C1 19980827; CA 2287182 A1 19981029; CN 1260879 A 20000719; EP 0977997 A2 20000209; JP 2001521630 A 20011106; KR 20010020194 A 20010315; WO 9848284 A2 19981029; WO 9848284 A3 19990128

INPADOC legal status

2003-05-14 [18D] DEEMED TO BE WITHDRAWN

- Ref Legal Event Code: 18D

- Effective date: 20021101

2001-08-22 [RAP1] TRANSFER OF RIGHTS OF AN EP PUBLISHED APPLICATION

- Owner name: INFINEON TECHNOLOGIES AG

- Ref Legal Event Code: RAP1

2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Ref Legal Event Code: 17P

- Effective date: 19991019

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Ref Legal Event Code: AK

- Designated State(s): DE ES FR GB IT SE