RPM Sensor Energy Switching for Brake Failure
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Solution Overview
Problem
In automated vehicle operation, when the primary brake-control system fails, conventional systems require additional rpm sensors to prevent wheel locking, increasing material and assembly costs.
Innovation Solution
An apparatus and method that decouples an rpm sensor from the primary energy supply and couples it to a secondary energy supply upon error detection, allowing independent operation and providing wheel speed information for the secondary brake system to prevent wheel locking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional rpm sensors are installed for the secondary brake system, then wheel speed information is available for preventing wheel locking during primary system failure, but material costs and assembly complexity increase
Solution Approach 1:
The rpm sensor is designed to serve dual functions: it operates as part of the primary brake-control system during normal operation and automatically switches to the secondary energy supply when primary system failure is detected, enabling the same sensor to support both primary and secondary brake systems without requiring additional sensors
Solution Approach 2:
The system dynamically reconfigures the energy supply configuration of the rpm sensor based on system state. A coupling device automatically switches the rpm sensor from the primary energy supply to the secondary energy supply when an error in the primary control is detected, allowing adaptive response to failure conditions
2Reliability
If additional rpm sensors are installed for the secondary brake system, then wheel speed information is available for preventing wheel locking during primary system failure, but assembly complexity increases
Solution Approach 1:
The existing rpm sensor is made universal by enabling it to support both primary and secondary brake systems through automatic energy supply switching, eliminating the need for separate sensors and reducing assembly complexity
Solution Approach 2:
The system employs dynamic reconfiguration of the energy supply path through a coupling device that automatically switches between primary and secondary energy supplies based on system status, simplifying the overall assembly while maintaining reliability
Data Source
AI summary
An apparatus for operating a vehicle, including a coupling device which is designed to decouple a speed sensor from a primary energy supply of a primary control of a primary brake-control system and to couple it to a secondary energy supply, and a control device which is designed to control the coupling device as a function of an error signal of the primary control, so that in response to an error of the primary control, the speed sensor is able to be decoupled from the primary energy supply and coupled to the secondary energy supply. A method for operating a vehicle, a system for operating a vehicle, as well as a computer program are also described.