Motor Vehicle Lock Detection Device Using Resistance Measurement
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Solution Overview
Problem
Existing detection devices for motor vehicle locks can only reliably detect a limited number of functional states using a given number of binary signal outputs, limiting their capability to represent various mechanical states.
Innovation Solution
The detection device incorporates an additional information channel by utilizing the electrical resistance between signal outputs to distinguish multiple states, allowing more functional states to be detected without increasing the complexity of the device, using a configuration where at least two functional states generate the same logical state but are distinguishable by different resistance values.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the number of binary signal outputs is kept constant, then the device complexity is minimized, but the number of detectable functional states is limited
Solution Approach 1:
The patent transitions from detecting only logical states (0 or 1) to detecting electrical resistance values, adding a new dimension of information. By measuring resistance between signal outputs, the system can distinguish multiple functional states within the same logical state, effectively increasing the detection capacity without adding more signal lines.
Solution Approach 2:
The patent utilizes changes in electrical resistance as a parameter to distinguish between different functional states. Instead of relying solely on logical state changes, the system measures resistance variations caused by different mechanical positions of locking elements, enabling differentiation of multiple states that would otherwise produce identical logical outputs.
2Adaptability or versatility
If electrical resistance measurement is added to logical state detection, then the number of detectable functional states increases, but the measurement precision requirements increase
Solution Approach 1:
The patent employs simple resistive measurement circuits that do not require high-precision measurement equipment. The resistance measurement approach uses basic electrical components and simple evaluation logic, avoiding the need for complex, expensive precision measurement instruments while still achieving sufficient differentiation between functional states.
3Loss of information
If the detection device uses only logical states of signal outputs, then the device complexity is low, but the information content is insufficient to distinguish all functional states
Solution Approach 1:
The signal outputs serve dual functions: they provide logical state information (0 or 1) and simultaneously serve as measurement points for electrical resistance detection. This multi-functionality allows the same hardware components to extract both logical and analog information, maximizing the information content without increasing the number of signal lines or device complexity.
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
This approach enables the detection of up to five functional states using only two binary signal outputs, enhancing the detection capability while maintaining a simple and compact design.
Implementation Method 1
the electrical resistance between two predetermined signal outputs of the detection device differs depending on the respective functional state
Data Source
AI summary
The invention relates to a detection device for detecting mechanical functional states of a motor vehicle lock, in which at least two binary signal outputs are provided which define a logical state of the detection device through the respective electrical potentials present there. It is proposed that the functional state of the motor vehicle lock is determined on the basis of the logical state of the signal outputs and of the electrical resistance between the predetermined signal outputs.