US 12,447,938 B2
Method for evaluating wheel sensor signals, assembly for said method, and brake system comprising said assembly
Frank Michel, Rosbach v.d. Höhe (DE); and Micha Heinz, Darmstadt (DE)
Assigned to Continental Automotive Technologies GmbH, Hannover (DE)
Appl. No. 18/704,572
Filed by Continental Automotive Technologies GmbH, Hannover (DE)
PCT Filed Apr. 28, 2022, PCT No. PCT/DE2022/200079
§ 371(c)(1), (2) Date Apr. 25, 2024,
PCT Pub. No. WO2023/078510, PCT Pub. Date May 11, 2023.
Claims priority of application No. 10 2021 212 324.4 (DE), filed on Nov. 2, 2021.
Prior Publication US 2024/0409071 A1, Dec. 12, 2024
Int. Cl. B60T 8/171 (2006.01); B60T 8/172 (2006.01); B60W 10/18 (2012.01); H04L 67/12 (2022.01)
CPC B60T 8/171 (2013.01) [B60T 8/1725 (2013.01); B60W 10/18 (2013.01); H04L 67/12 (2013.01); B60W 2420/503 (2013.01); B60W 2520/28 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for evaluating wheel sensor signals of a wheel speed sensor, the sensor including a first processor unit and a second processor unit, wherein the wheel sensor signals include a first protocol and a second protocol, and wherein the first protocol includes a first start pulse and first protocol pulses, and the second protocol includes a second start pulse and second protocol pulses, and the first processor unit is connected to the second processor unit via an ASO interface, and wherein the method comprises:
generating a magnetic field with a magnetic encoder wheel and sensing the magnetic field as wheel sensor signals from the wheel speed sensor;
transmitting the protocols of the wheel sensor signals from the wheel speed sensor to the first processor unit;
evaluating each transmitted protocol with the first processor unit to determine whether it is a first protocol or a second protocol;
generating a pulse-width modulated ASO signal with a first length from the first start pulse in the case of a first protocol;
generating a pulse-width modulated ASO signal with a second length from the second start pulse in the case of a second protocol;
transmitting the pulse-modulated ASO signal from the first processor unit to the second processor unit via the ASO interface; and
evaluating the ASO signal with the second processor unit to ascertain whether it is an ASO signal from a first start pulse or an ASO signal from a second start pulse by determining whether the ASO signal has a first length or a second length.