Brake Valve Coil Redundancy With a Single Control Board
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Solution Overview
Problem
Existing brake control apparatuses with dual terminals for electromagnetic valves increase cost and size when redundancy is implemented for required systems like anti-lock control.
Innovation Solution
A brake control apparatus with a first and second coil connected in parallel, housed in a single control board, offset from the housing axis, and connected to a single control board, minimizing size and cost while maintaining redundancy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If all electromagnetic valve coils are formed by dual terminals with separate ECUs for redundancy, then system reliability is improved, but cost and device size increase
Solution Approach 1:
The patent merges the control functions of multiple ECUs into a single control board that manages all electromagnetic valves (first and second coils) centrally. This consolidation maintains the redundancy capability through dual-terminal coil configuration while reducing the number of separate control units, thereby decreasing device size and complexity without sacrificing reliability
Solution Approach 2:
The single control board is designed to perform multiple functions: it controls both the first coil and second coil of electromagnetic valves, manages redundancy switching, and interfaces with all sensors and actuators. This multi-functional design eliminates the need for separate ECUs for each function, reducing overall device complexity while maintaining comprehensive system reliability
2Reliability
If all electromagnetic valve coils are formed by dual terminals with separate ECUs for redundancy, then system reliability is improved, but manufacturing cost increases
Solution Approach 1:
By combining multiple ECU functions into a single control board, the patent reduces the total component count, assembly steps, and testing requirements. This consolidation lowers manufacturing costs while preserving the reliability benefits of dual-terminal coil configuration through centralized control architecture
3Ease of manufacture
If redundancy is implemented for required systems only, then cost is reduced, but system reliability may be compromised
Solution Approach 1:
The patent applies redundancy selectively to critical components (electromagnetic valve coils) while using a single control board for overall system management. The dual-terminal coil configuration provides localized redundancy where needed, while the centralized control board optimizes cost by eliminating redundant ECUs in non-critical areas, achieving a balanced reliability-cost solution
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 apparatus effectively curbs cost and minimizes size increase while ensuring redundancy for required systems like anti-lock control.
Implementation Method 1
an electromagnetic valve device including a first coil 391a to which a first terminal 3911a and a second terminal 3922a are connected, and a second coil 392a to which a third terminal 3921a and a fourth terminal 3912a are connected
Data Source
AI summary
The present invention provides a brake control apparatus capable of both curbing cost and minimizing a size increase at the same time when redundancy is implemented for only a required system. A brake control apparatus includes an electromagnetic valve device including a first coil to which a first terminal and a second terminal are connected, and a second coil to which a third terminal and a fourth terminal are connected, in parallel with each other, a housing where the electromagnetic valve device is disposed, and a one control board disposed offset from one end surface of the housing in a direction of an axis around which the first coil is wound. All of the terminals are connected to the one control board.