Ring Bus Data Processing System for Vehicle Brake Control
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Solution Overview
Problem
Existing vehicle-supported data processing systems for brake control are susceptible to failure due to single voltage supply issues and communication interruptions, leading to potential partial or complete brake system failures.
Innovation Solution
A ring bus data processing system with multiple transmitter and receiver units, powered by at least two different vehicle electrical systems, utilizing potential separating devices like optocouplers or capacitors to divide the bus into sections, ensuring communication continuity even if one processing unit or electrical system fails, and incorporating a bidirectional and reconfigurable design to maintain operational readiness of brakes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a ring bus system is used to allow undisturbed continuation of communication in case of interruption of a single connection, then communication reliability is improved, but the system becomes vulnerable to complete communication failure when a vehicle electrical system powering multiple units fails
Solution Approach 1:
The ring bus is segmented into multiple independent communication sections by potential separating devices. Each section is powered by a different vehicle electrical system, so that a failure in one electrical system only affects one section while other sections remain operational. This segmentation isolates the impact of electrical system failures and prevents complete communication shutdown.
Solution Approach 2:
Potential separating devices act as intermediaries between different vehicle electrical systems on the ring bus. These devices include optocouplers or capacitors that electrically isolate sections while maintaining communication functionality. The intermediary components prevent voltage fluctuations and electrical faults from propagating across the entire bus system.
2Device complexity
If processing units are powered by a single vehicle electrical system to simplify the power supply architecture, then device complexity is reduced, but the system loses redundancy and becomes susceptible to complete failure from a single electrical system outage
Solution Approach 1:
Different processing units on the ring bus are assigned to different vehicle electrical systems based on their local requirements and failure mode considerations. This local quality assignment ensures that critical functions have power supply redundancy while avoiding the need for every unit to have complex dual-power capabilities. Each unit is optimized for its specific operational context.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The system maintains communication and operational readiness of brakes by minimizing the impact of electrical system failures, allowing uninterrupted data traffic and ensuring that brakes remain operational even if one vehicle electrical system fails, thus reducing the risk of partial or complete brake system failure.
Implementation Method 1
The potential separating devices may include optocouplers or capacitors connected between a data input and output
Implementation Method 2
The potential separating devices may include optocouplers or capacitors connected between a data input and output
Implementation Method 3
Further possibilities for potential separation are inductive couplers
Implementation Method 4
piezoelectric transducer pairs, in which one transducer converts an applied electrical voltage into a deformation of a crystal lattice and this deformation is detected by a complementary transducer and converted back into a voltage
Data Source
AI summary
A vehicle-supported data processing system includes a plurality of processing units communicating with one another via a bus system, which are each supplied with operating power by at least one of the at least two different vehicle electrical systems. Multiple transmitter units for control information and multiple receiver units for the control information are among the processing units. The bus system is a ring bus, in which each processing unit is connected to at least two adjacent processing units by a bus segment in each case. The ring bus is divided, by potential separating devices, which are incorporated in the bus segments which connect processing units powered by different vehicle electrical systems, into a number of sections, which is smaller than the number of the processing units.