Vehicle Electronic Key Reflection Sensing for False Button Presses
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Solution Overview
Problem
Existing electronic key systems require user effort to switch and cancel a transmission stop mode, and are vulnerable to unintended erroneous operations due to external forces, leading to unwanted door locking and unlocking.
Innovation Solution
The electronic key incorporates a light emitter and receiver system to detect erroneous operations by emitting light and receiving reflection light, preventing signal transmission when the key is in a closed space or under external force, thereby suppressing unintended door locking and unlocking.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a transmission stop mode is implemented to prevent erroneous operations, then security against unintended door locking and unlocking is improved, but user effort and operational complexity increase due to requiring simultaneous button pressing to switch and cancel the mode
Solution Approach 1:
The electronic key automatically detects erroneous operations through the light emitter and receiver system, and autonomously determines whether to transmit operation signals without requiring user intervention to switch modes. The system serves itself by monitoring its own operational state and making decisions based on detected conditions.
Solution Approach 2:
The light receiver provides feedback about the operational environment by detecting reflection light. This feedback loop allows the processor to continuously monitor conditions and automatically adjust signal transmission behavior based on detected erroneous operation patterns, eliminating the need for manual mode switching.
2Ease of operation
If the electronic key transmits operation signals freely, then ease of operation is improved, but vulnerability to unintended erroneous operations from external forces increases
Solution Approach 1:
The system preemptively prevents erroneous operations by detecting light reflection patterns that indicate the key is subjected to external forces or improper handling. Before an unintended operation can occur, the processor identifies the risky condition through the light receiver and blocks the operation signal transmission in advance.
Solution Approach 2:
The light emitter and receiver act as intermediary sensors that mediate between the operation button and the operation signal transmitter. They provide an additional layer of verification by detecting environmental conditions, allowing the system to filter out erroneous operations while permitting legitimate ones.
3Reliability
If light emission and reception systems are added to detect erroneous operations, then reliability against unintended operations is improved, but device complexity increases
Solution Approach 1:
The light emitter and receiver system serves multiple functions: it detects erroneous operations, determines transmission blocking decisions, and provides environmental context to the processor. This multi-functionality reduces the need for separate dedicated components for each function, thereby limiting the increase in overall device complexity.
Solution Approach 2:
The light detection functionality is merged with the existing operation signal transmission system. The processor integrates the light receiver's feedback directly into the decision-making process for signal transmission, combining what would otherwise be separate systems into a unified operational control mechanism.
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 solution effectively prevents unintended door locking and unlocking by detecting erroneous operations, reducing user effort and enhancing security against accidental activations.
Implementation Method 1
The light emitter is configured to output light, in response to the operation of the operation button. The light receiver is configured to receive reflection light of the light outputted from the light emitter.
Data Source
AI summary
An electronic key for a vehicle includes an operation button, an operation signal transmitter, a light emitter, a light receiver, and a processor. The operation button is configured to perform a door locking and a door unlocking of the vehicle. The operation signal transmitter is configured to transmit an operation signal, based on an operation performed on the operation button. The light emitter is configured to output light, in response to the operation of the operation button. The light receiver is configured to receive reflection light of the light outputted from the light emitter. The processor is configured to refrain from causing the operation signal transmitter to transmit the operation signal that is based on the operation of the operation button, when the light receiver receives the reflection light.