Chassis Measurement Steering Trigger Logic
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Solution Overview
Problem
Existing chassis measurement methods require users to perform a turning routine every time, even if unnecessary, interrupting the workflow and requiring the use of input devices.
Innovation Solution
A method and device that allow users to start a turning routine by turning the steering wheel within a predetermined angle and time window, enabling selective initiation of the routine without leaving the vehicle or using additional input devices, with adjustable parameters for user and vehicle adaptation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a turning routine is executed every time for chassis measurement, then measurement completeness is ensured, but workflow efficiency deteriorates due to unnecessary steering movements
Solution Approach 1:
The system changes the parameter of steering wheel angle from a fixed mandatory movement to a variable trigger condition. By monitoring steering wheel angle deviations dynamically, the system adapts the turning routine execution based on actual measurement needs, eliminating unnecessary routines while ensuring required measurements are performed.
2Measurement precision
If an input device is used to select and start the turning routine, then routine selection is precise, but ease of operation deteriorates due to additional device requirements
Solution Approach 1:
The system enables self-service operation by using the steering wheel itself as the input trigger. The driver's natural steering actions automatically initiate the turning routine without requiring separate input devices or manual selections, making the system both precise and convenient.
Solution Approach 2:
The steering wheel serves multiple functions: it is both the control element for vehicle direction and the trigger element for initiating measurement routines. This multi-functionality eliminates the need for separate input devices while maintaining precise routine selection through angle monitoring.
3Reliability
If the steering wheel must be turned to a large angle to start the turning routine, then accidental triggering is prevented, but ease of operation worsens due to excessive steering movement
Solution Approach 1:
The system uses a partial action threshold (minimum angle deviation) that is sufficient to prevent accidental triggering but small enough to be comfortably executed by the driver. This threshold-based approach balances reliability and operability by requiring only a modest steering input to initiate the routine.
Data Source
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AI summary
The invention relates to a device (4) for measuring the chassis geometry of a vehicle (20), comprising at least one sensor (6) which is designed to detect the angle of lock at least one steerable wheel (24a, 24b) of a vehicle (20) to be measured; and a control device (8) which is designed to start a locking routine (150a, 150b) when the at least one sensor (6) detects a steering lock of the at least one steerable wheel (24a, 24b) in a pre-defined time window and the detected steering lock exceeds a pre-defined minimum angle (a).