Wireless Communication Device Pilot Signal Amplification
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Solution Overview
Problem
Existing contactless communication methods, such as optical coupling, face errors due to signal attenuation during bidirectional communication between rotating and static members in robotic joints, leading to incorrect data determination.
Innovation Solution
A wireless communication device with a first transmitting unit and a first receiving unit that superimpose a pilot signal on the digital signal and amplify the received signal based on the pilot signal's intensity, ensuring stable communication across varying distances and rotation angles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If optical coupling is used for contactless communication between rotating and static members, then maintenance is easier and electromagnetic interference is reduced, but signal attenuation occurs during rotation leading to data determination errors
Solution Approach 1:
The patent applies preliminary action by detecting the pilot signal component before the main data signal and using it to determine amplification in advance. The receiving unit detects the pilot signal component from the received signal, determines an amplification amount based on this detection, and then amplifies the signal accordingly. This preliminary detection and determination of amplification ensures that the main signal is amplified by the correct amount to compensate for attenuation, preventing data determination errors.
Solution Approach 2:
The patent implements feedback by using the detected pilot signal component to control the amplification of the received signal. The receiving unit continuously detects the pilot signal, determines the amplification amount based on the detected pilot signal strength, and adjusts the amplification accordingly. This feedback mechanism ensures that the amplification dynamically compensates for signal attenuation caused by rotation, maintaining communication reliability.
2Adaptability or versatility
If bidirectional communication is implemented using optical coupling, then communication in both directions is enabled, but errors occur in data determination on both receiving sides due to signal attenuation
Solution Approach 1:
The patent applies preliminary action by detecting the pilot signal component before the main data signal and using it to determine amplification in advance. The receiving unit detects the pilot signal component from the received signal, determines an amplification amount based on this detection, and then amplifies the signal accordingly. This preliminary detection and determination of amplification ensures that the main signal is amplified by the correct amount to compensate for attenuation, preventing data determination errors.
Solution Approach 2:
The patent implements feedback by using the detected pilot signal component to control the amplification of the received signal. The receiving unit continuously detects the pilot signal, determines the amplification amount based on the detected pilot signal strength, and adjusts the amplification accordingly. This feedback mechanism ensures that the amplification dynamically compensates for signal attenuation caused by rotation, maintaining communication reliability.
3Illumination intensity
If the light emitting element faces the light receiving element for maximum signal intensity, then communication quality is best at that position, but the signal intensity varies significantly with rotation angle
Solution Approach 1:
The patent implements feedback by using the detected pilot signal component to control the amplification of the received signal. The receiving unit continuously detects the pilot signal, determines the amplification amount based on the detected pilot signal strength, and adjusts the amplification accordingly. This feedback mechanism ensures that the amplification dynamically compensates for signal attenuation caused by rotation, maintaining communication reliability.
Solution Approach 2:
The patent applies parameter changes by dynamically adjusting the amplification parameter based on the detected pilot signal strength. The receiving unit changes the amplification amount according to the rotation angle-induced signal attenuation, compensating for the varying light intensity and maintaining stable communication quality regardless of the rotation position.
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 configuration prevents errors in data determination by maintaining signal integrity across bidirectional communication, even with significant attenuation, allowing for reliable communication in robotic joints and similar applications.
Implementation Method 1
transmits a first wireless signal having an intensity in accordance with the first electric signal
Implementation Method 2
the first receiving unit generates a second electric signal in accordance with the intensity of the received first wireless signal
Data Source
AI summary
When performing contactless communication, occurrence of error in data determined on the receiving side due to attenuation of a wireless signal is prevented on both receiving sides by using a simple configuration. Provided is a wireless communication device including: a transmitting unit provided on a first member and a receiving unit provided on a second member and located at a varying relative distance to the transmitting unit, the transmitting unit generates a first electric signal obtained by superimposing a pilot signal on a digital signal to be transmitted and transmits a wireless signal having an intensity in accordance with the first electric signal, the receiving unit generates a second electric signal in accordance with the intensity of the received wireless signal and detects a pilot signal component from the second electric signal, and the second electric signal is amplified in accordance with an attenuation amount of the pilot signal component.