Parking Brake Release via Priority-Validated Vehicle Factors
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Solution Overview
Problem
Existing vehicle parking systems for trucks often require multiple and complex conditions to be met before the parking brake can be released, leading to potential downtime and non-operation under certain conditions.
Innovation Solution
A parking brake apparatus that monitors a plurality of vehicle factors through various devices and follows predefined sequences to release the parking brake, allowing for prioritization of vehicle interlocks and enabling release based on valid pre-startup and pre-release sequences, along with driver requests.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple vehicle factors are monitored and required to be met before releasing the parking brake, then safety is improved, but system complexity and downtime increase
Solution Approach 1:
The patent segments the vehicle factors into different priority levels (first priority, second priority, third priority). This segmentation allows the system to manage multiple factors without requiring all to be satisfied simultaneously, reducing complexity while maintaining safety through prioritized validation.
Solution Approach 2:
The system performs preliminary validation of vehicle factors in a predefined sequence before releasing the parking brake. By checking factors in advance according to priority levels, the system ensures safety requirements are met without adding operational complexity during the actual release process.
2Reliability
If all vehicle interlocks must be satisfied simultaneously to release the parking brake, then safety is improved, but downtime increases
Solution Approach 1:
The patent divides vehicle interlocks into priority groups that can be satisfied in sequence rather than simultaneously. First priority factors must be met, then second priority, then third priority, allowing the brake release process to proceed through stages rather than waiting for all conditions.
Solution Approach 2:
The system dynamically evaluates vehicle factors in a predefined sequence, allowing the parking brake release condition to change as factors are satisfied over time. This dynamic approach enables brake release as soon as sufficient priority conditions are met, rather than requiring all conditions simultaneously.
3Reliability
If a predefined sequence of vehicle factors is required for brake release, then operational safety is improved, but ease of operation decreases
Solution Approach 1:
The system performs preliminary checks of vehicle factors in a predefined sequence before the driver attempts to release the parking brake. This preliminary validation ensures safety requirements are met automatically, reducing the operational burden on the driver while maintaining strict safety protocols.
Solution Approach 2:
The electronic controller automatically monitors and validates vehicle factors according to the predefined sequence without requiring manual intervention from the driver. The system self-manages the complexity of checking multiple conditions, presenting a simple interface to the driver while ensuring comprehensive safety validation.
Data Source
AI summary
A parking brake apparatus is provided for a vehicle having components of a parking brake system and devices for providing a plurality of output signals indicative of a plurality of vehicle factors. The parking brake apparatus comprises an electronic controller that monitors the output signals indicative of a plurality of vehicle factors, monitors for a pre-startup sequence of the plurality of vehicle factors having been met, monitors for a driver request to unpark the vehicle, monitors for a pre-release sequence of the plurality of vehicle factors having been met, and applies one or more control signals to components of the parking brake system to release parking brakes based upon a valid pre-startup sequence of the plurality of vehicle factors having been met, a driver request to unpark the vehicle, and at least one valid pre-release sequence of the plurality of vehicle factors having been met.