Roll Locking ECU Architecture for Safe Three-Wheeler Stability
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Solution Overview
Problem
Existing three- or four-wheeled rolling motor vehicles face safety challenges in the electronic control of their roll locking systems, particularly in ensuring safe activation and deactivation based on speed and parking states.
Innovation Solution
A three- or four-wheeled rolling motor vehicle equipped with a dual-processing unit electronic control system that includes a first processing unit to determine operational states for the roll locking system and a second processing unit to validate safety conditions before allowing the system to change or maintain its state, ensuring high reliability and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single-processing unit electronic control system is used for the roll locking system, then the device complexity is reduced and ease of manufacture is improved, but the safety and reliability of the roll locking system deteriorates due to potential incorrect or arbitrary commands
Solution Approach 1:
The electronic control system is segmented into two independent processing units: a first processing unit that determines operational states (locking/unlocking) based on vehicle speed and parking status, and a second processing unit that validates safety conditions. This segmentation allows each unit to specialize in specific functions, improving overall reliability while maintaining manageable complexity through clear functional separation.
Solution Approach 2:
The second processing unit acts as an intermediary between the first processing unit and the roll locking system actuator. It validates commands from the first processing unit against safety conditions (vehicle speed, parking status) before execution, preventing incorrect or arbitrary commands from reaching the locking mechanism while maintaining system reliability.
2Stability of the object's composition
If the roll locking system is activated at high speeds, then vehicle stability during parking is improved, but harmful factors increase due to potential unsafe locking at inappropriate speeds
Solution Approach 1:
The electronic control system continuously monitors vehicle speed and parking status as feedback parameters. The first processing unit uses this feedback to determine when locking is appropriate (low speed, parking status), and the second processing unit validates this feedback against safety conditions before allowing locking, preventing unsafe activation at high speeds while ensuring stability when appropriate.
Solution Approach 2:
The system performs preliminary validation of safety conditions (vehicle speed check, parking status verification) by the second processing unit before the roll locking system is actually activated. This preliminary action prevents unsafe locking by checking conditions in advance, ensuring that locking only occurs when vehicle speed is low and parking status is confirmed.
Data Source
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AI summary
A three- or four-wheeled rolling motor vehicle (1 ) comprising: - a main body (2, 3,4), comprising a front portion (2), a middle portion (3), and a tail portion (4); - three or four wheels (6, 7) constrained to the main body (2, 3, 4), comprising at least two rolling wheels (6) arranged at the front portion (2) or at the tail portion (4); - at least one traction engine (8) operatively connected to at least one of said three or four wheels (6, 7); - a roll locking system (50) of the two rolling wheels (6), controllable to selectively take a locking operational state and an unlocking operational state; - an electronic control unit (100) of the roll locking system (50) operatively connected to the roll locking system (50) and configured to control the roll locking system (50), wherein the electronic control unit (100) comprises a first processing unit (110) configured to receive and process at least a first input signal (S1a, S1b, S1c) to establish whether the roll locking system (50) must take or maintain the locking operational state or the unlocking operational state. The electronic control unit (100) comprises a second processing unit (120) operatively connected to the first processing unit (110) and configured to receive and process at least a second input signal (S2a, S2b) to determine whether at least one safety condition is met or not, and provide consent to control the locking system (50) for it to take or maintain the locking operational state or the unlocking operational state established by the first processing unit (110). The first input signal (S1a, S1b, S1c) and the second input signal (S2a, S2b) comprise a first plurality of signals and a second plurality of input signals, respectively. Said first and said second pluralities of signals comprise at least one signal in common.