EBS Inertia Sensor Layout for Redundant Vehicle Dynamic Control
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Solution Overview
Problem
Existing vehicle systems lack an effective method to provide accurate and continuous sensor information for dynamic control during automated driving, particularly in SAE Automation levels 2 and 3, where driver attention is not required.
Innovation Solution
An electric system for vehicles incorporating an electronically controlled brake system (EBS) with a steering angle sensor unit, control modules, and an electronic braking system central control unit (EBS ECU), where inertia sensors are mounted within or on control modules, enabling direct communication with the EBS ECU for improved dynamic control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If inertia sensors are integrated into control modules with direct communication to EBS ECU, then measurement precision and response time are improved, but device complexity increases
Solution Approach 1:
The patent integrates inertia sensors directly into control modules that communicate with the EBS ECU, combining sensing and control functions in a unified architecture. This merging approach enables direct data flow from sensors to the electronic braking system controller, improving measurement precision and response time while managing complexity through functional integration.
2Reliability
If multiple control modules with inertia sensors are distributed throughout the vehicle, then reliability is improved through redundancy, but device complexity increases
Solution Approach 1:
The patent distributes inertia sensors across multiple control modules positioned at different locations in the vehicle (front, rear, left, right). This segmentation creates redundant sensing paths, where if one sensor or module fails, others continue to provide data for stable operation. The distributed architecture improves reliability while managing complexity through modular design.
Solution Approach 2:
The system incorporates redundant inertia sensors and control modules as a preemptive measure against potential failures. By having backup sensing and control capabilities distributed throughout the vehicle, the system cushions against the harmful effect of sensor or module failure, ensuring continuous reliable operation of the electronic braking system.
3Ease of operation
If inertia sensors are mounted within control modules, then ease of operation is improved through centralized data access, but manufacturing precision requirements increase
Solution Approach 1:
By integrating inertia sensors within control modules rather than mounting them separately, the patent simplifies data access and system operation. The centralized location of sensors within modules that directly communicate with the EBS ECU eliminates complex data routing, improving ease of operation while the modular design standardizes mounting requirements.
Data Source
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AI summary
The present invention relates to an electric system (10) of a vehicle (200) including an electronically controlled braking system. The electric system (10) has a steering angle sensor unit (109), at least one control module (20), at least one first inertia sensor (110) and an electronic braking system central control unit EBS ECU (101). The at least one control module (20) is external to the steering angle sensor unit (109). The at least one control module (20) is also external to the EBS ECU (101). At least one of the at least one control module (20) has mounted within it one of the at least one first inertia sensor (110).