US 12,140,941 B2
Method and control unit for determining a condition of a system
Johann Bramauer, Ybbsitz (AT)
Assigned to KNORR-BREMSE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG, (AT)
Appl. No. 16/649,940
Filed by KNORR-BREMSE GESELLSCHAFT MIT BESCHRÄNKTER HAFTUNG, Mödling (AT)
PCT Filed Sep. 20, 2018, PCT No. PCT/EP2018/075412
§ 371(c)(1), (2) Date Mar. 23, 2020,
PCT Pub. No. WO2019/057801, PCT Pub. Date Mar. 28, 2019.
Claims priority of application No. 10 2017 121 928.5 (DE), filed on Sep. 21, 2017.
Prior Publication US 2021/0382471 A1, Dec. 9, 2021
Int. Cl. G05B 23/02 (2006.01)
CPC G05B 23/0283 (2013.01) [G05B 23/0213 (2013.01); G05B 23/0256 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A method for determining a condition of a vehicle system, wherein the vehicle system has at least one general functional component and at least one safety-critical functional component, wherein the method comprises:
generating a general prediction value and a safety prediction value for the vehicle system using at least one input signal via a control unit and detection of a time frame for safety checking and displaying of a residual running time up to the next necessary check, and
displaying the general prediction value and the safety prediction value graphically using a display device, coupled to the control unit to receive the generated prediction value and safety prediction value, in separate bar displays regarding a due date for maintenance operations on the functional components and separate traffic light displays for the predicted conditions of the functional components,
wherein the at least one input signal represents condition data relating to use and activity of the functional components,
wherein the general prediction value represents a predicted condition of at least the at least one general functional component,
wherein the safety prediction value represents a predicted condition of the at least one safety-critical functional component,
wherein, during the generating, the safety prediction value is generated which represents a time frame for a maintenance operation on the at least one safety-critical functional component and a residual running time up to a maintenance operation on the at least one safety-critical functional component, and is determined, at least in part by the activation at least one safety-critical functional component during the determined time frame for safety checking,
wherein the generating is carried out during part of an active operating time in the system in a continuous or cyclically repeated manner,
in response to a determination that the at least one safety-critical functional component was active during the determined time frame for safety checking, eliminating a manual check requirement for the functional components and maintaining the manual check requirement in response to a determination that that the at least one safety-critical functional component was inactive during the determined time frame for safety checking, and
wherein, during the generating, the safety prediction value is generated after a test run of the system has taken place.