Trainable Transceiver Frequency Offset Adjustment
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Solution Overview
Problem
Developing a trainable transceiver that can communicate with devices having communication frequencies different from those specified in the device's documentation is challenging, as frequency offsets can vary between actual and reported frequencies, leading to communication failures.
Innovation Solution
The trainable transceiver includes a control circuit and memory that determine the frequency of a channel used by a device based on signal strength, allowing it to automatically adjust activation signal parameters to match the actual frequencies used by the device, even if they differ from those listed in the specification.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the trainable transceiver uses the frequency reported in the device specification, then the device complexity is reduced and ease of operation is improved, but the reliability of communication deteriorates when the actual frequency differs from the specified frequency
Solution Approach 1:
The transceiver automatically detects and determines the actual frequency used by the device through signal strength measurement, eliminating the need for manual frequency configuration or complex calibration procedures. The system serves itself by autonomously identifying the correct communication frequency.
Solution Approach 2:
The patent replaces manual frequency tuning or complex frequency matching procedures with an automated electronic detection system that measures signal strength to determine the actual frequency, substituting mechanical or manual operations with electronic automation.
2Adaptability or versatility
If the trainable transceiver implements automatic frequency detection based on signal strength, then the adaptability to devices with frequency offsets is improved, but the device complexity increases
Solution Approach 1:
The transceiver changes its operating frequency parameter based on detected signal strength characteristics, automatically adjusting to match the actual frequency used by the device. This allows the system to adapt to frequency offsets without requiring complex reconfiguration mechanisms.
Solution Approach 2:
The system uses signal strength measurement as feedback to determine the actual frequency being used by the device. This feedback mechanism enables the transceiver to automatically adjust and lock onto the correct frequency, improving adaptability while keeping the control logic relatively simple.
3Measurement precision
If the trainable transceiver scans multiple frequencies to find the correct channel, then the measurement precision of frequency identification is improved, but the loss of time increases
Solution Approach 1:
The transceiver performs preliminary frequency scanning and signal strength measurement during the initial training phase to identify the actual frequency. By completing this frequency identification process in advance, the system ensures precise frequency matching is established before normal operation begins.
Solution Approach 2:
The frequency detection process is implemented as a periodic training procedure that occurs during device pairing or reconfiguration. The system periodically measures signal strength at different frequencies to identify the correct channel, balancing measurement precision with acceptable training time through structured periodic scanning.
Data Source
AI summary
A trainable transceiver for controlling a device includes a transceiver circuit, a control circuit coupled to the transceiver circuit, and memory coupled to the control circuit. The control circuit is configured to receive a signal from the device via the transceiver circuit. The control circuit is configured to determine a frequency of a channel used by the device based on the signal strength of the signal received from the device.