Vehicle Remote Control Device with Vibration Sensor
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Solution Overview
Problem
Conventional remote control devices for vehicles are bulky due to the need for thick antennas for durability, leading to reduced battery life and compromised vehicle security due to decreased transmission distance and power usage.
Innovation Solution
A remote control device with a vibration sensor that changes operation modes based on location, switching to an inactive mode when not in use to conserve power and prevent relay attacks, thereby enhancing security and battery efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the thickness of the remote control device is reduced, then the portability is improved, but the battery usage time and available power decrease
Solution Approach 1:
The patent implements dynamic operation modes (active, standby, inactive) that adjust the device's functionality based on usage state. The controller switches between these modes to optimize power consumption, allowing the device to maintain thin design while extending effective battery usage time by being selective about when full functionality is active.
Solution Approach 2:
The patent employs periodic wake-up cycles where the device transitions between inactive and active states. The vibration sensor periodically checks for user input, and the communication unit periodically attempts connection with the vehicle, creating a rhythm of sleep-wake cycles that extend battery life while maintaining responsiveness.
2Volume of moving object
If the thickness of the PCB is reduced, then the device thickness is decreased, but the transmission/receiving distance of the antenna decreases
Solution Approach 1:
The communication unit dynamically adjusts its operation based on connection status and signal quality. When in inactive mode, deep communication is avoided. When active, the system optimizes transmission parameters to achieve sufficient range with the reduced PCB thickness, balancing antenna performance constraints with range requirements.
Solution Approach 2:
The vibration sensor detects user intent before full communication is needed, allowing the system to prepare for upcoming transmission requirements. This preliminary detection enables the thin PCB design to be compensated by pre-positioning the device optimally or pre-establishing connection parameters.
3Speed
If the remote control device remains in active mode continuously, then the response speed is improved, but the battery power consumption increases
Solution Approach 1:
The controller dynamically transitions between active, standby, and inactive modes based on detected usage patterns and connection status. The vibration sensor triggers mode changes in real-time, ensuring the device responds quickly when needed while conserving power during periods of non-use, effectively decoupling continuous active operation from response readiness.
Solution Approach 2:
The system uses feedback from the vibration sensor and communication unit status to continuously adjust operation mode. When the vehicle detects the key's presence and status, it sends signals that feedback to the key fob, allowing synchronized mode adjustments that maintain responsiveness while optimizing power consumption based on actual usage conditions.
4Reliability
If the remote control device is always in active communication mode, then the vehicle security is improved, but the battery life decreases
Solution Approach 1:
The communication unit dynamically adjusts its active state based on proximity detection and usage context. When the device is detected near the vehicle or vibration indicates active use, full security communication is enabled. When away or inactive, communication enters low-power states, maintaining security protocols while reducing power consumption to extend battery life.
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 extends battery life and enhances vehicle security by optimizing power usage and preventing unauthorized access through intelligent operation mode switching.
Implementation Method 1
a vibration sensor sensing vibration of the remote control device
Data Source
AI summary
A remote control device for a vehicle includes a vibration sensor sensing vibration of the remote control device; a communication unit performing communication with the vehicle; and a controller changing an operation mode of the remote control device based on a first signal received from the vehicle via the communication unit.