Automobile Remote Control Device Using Frequency Shift Keying
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Solution Overview
Problem
Existing remote control devices for vehicles face issues with multifunction buttons causing delays in acknowledgment signals, leading to user confusion and potential security risks, and have limited battery life due to inefficient communication protocols.
Innovation Solution
A remote control device utilizing simultaneous bidirectional transmission with frequency shift keying over a single channel, allowing quasi-simultaneous receipt of acknowledgment signals with control signals and reducing latency, and incorporating isolation to minimize interference, thereby enabling rapid function execution feedback and extended battery life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a multifunction button is used to control multiple remote functions, then the number of buttons on the remote control is reduced, but the acknowledgment signal transmission time is significantly delayed
Solution Approach 1:
The patent implements periodic action by dividing the acknowledgment signal transmission into separate periodic cycles for each function. Instead of waiting for all functions to complete before transmitting any acknowledgment, the system transmits acknowledgments periodically as each function executes, using separate wake-up sequences for each function's acknowledgment cycle.
2Device complexity
If a single wake-up sequence is used for the complete control signal frame, then the communication protocol is simplified, but the acknowledgment of individual functions is significantly delayed
Solution Approach 1:
The patent applies segmentation by dividing the single wake-up sequence into multiple separate wake-up sequences, each dedicated to a specific function's acknowledgment. This allows the remote control to receive and process acknowledgments for different functions independently and simultaneously, rather than waiting for a single sequential acknowledgment cycle to complete all functions.
3Use of energy by moving object
If traditional bidirectional transmission is used, then battery life is optimized with spaced messages, but the user experiences delayed feedback and potential security risks
Solution Approach 1:
The patent implements periodic action by establishing separate periodic transmission cycles for different functions. Each function has its own wake-up sequence and acknowledgment timing, allowing the system to maintain optimized power consumption patterns while providing timely feedback for each function without requiring continuous high-power transmission.
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 enables rapid and reliable execution feedback for multifunction buttons, reducing the risk of user error and extending battery life by eliminating latency in communication and minimizing interference.
Implementation Method 1
frequency shift keying of the command and acknowledgment signals exchanged
Data Source
Figure 1A~4
Figure 2A~5
Figure 3
AI summary
The device (10) has a multifunction button (12) for controlling remote functions on a vehicle (20). A transmitter (17) transmits a control signal (TX DATA RK) of one of the remote functions, and a receiver (18) receives an acknowledgment signal (TX DATA UC) indicating the execution of the function. A multicolored LED (13) indicates reception of the acknowledgment signal. The transmitter and receiver are of duplex type and provided between the device and the vehicle, and use a single transmission channel for frequency shift modulation of control and acknowledgment signals. Independent claims are also included for the following: (1) a remote control system for a vehicle comprising a remote control device (2) a communication method for a remote control system.