Dual-Antenna Orienting Assembly for Four-Legged Robot Accompaniment
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Solution Overview
Problem
Existing four-legged robot systems struggle to accurately detect the orientation of an operator relative to the robot, leading to poor man-machine cooperation and accompaniment experiences due to interference during walking.
Innovation Solution
A robot accompaniment device equipped with a dual-antenna orienting assembly that recognizes the position, orientation, and turning angle of an accompaniment object using a dual-antenna structure, enabling accurate movement and turning with the object without complex sensors like pose sensors or gyroscopes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a foot pose sensor is used to detect operator movement, then the operator's hands are freed and control is simplified, but the robot cannot accurately detect the orientation of the operator relative to the robot and the foot module has large interference during walking
Solution Approach 1:
The patent introduces an intermediary orienting assembly with dual antennas that acts as a mediator between the operator and the robot. This assembly detects the operator's orientation independently of the foot module, transmitting orientation information to the robot without being affected by the interference that plagues direct foot-based detection methods.
Solution Approach 2:
The patent replaces the mechanical foot pose sensor system with an electromagnetic field-based dual-antenna orienting assembly. This substitution eliminates the mechanical interference issues during walking by using electromagnetic signal detection (time difference and phase difference calculations) instead of mechanical sensing, thereby maintaining measurement precision while preserving ease of operation.
2Measurement precision
If complex sensors like pose sensors, electronic compasses, and gyroscopes are arranged to determine position, orientation and turning angle, then detection accuracy is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The dual-antenna orienting assembly performs multiple functions simultaneously: it detects the operator's position, orientation, and turning angle using only two antennas and signal processing. This multi-functional approach eliminates the need for separate pose sensors, electronic compasses, and gyroscopes, thereby reducing device complexity while maintaining comprehensive detection accuracy.
Solution Approach 2:
The patent changes the detection parameters by using time difference and phase difference of electromagnetic signals as the primary measurement parameters instead of relying on multiple physical sensors. This parameter transformation allows a simple dual-antenna structure to achieve the same detection capabilities as complex multi-sensor systems, reducing both device complexity and manufacturing cost.
3Device complexity
If a single antenna is used for positioning, then device simplicity is maintained, but orienting capability is insufficient
Solution Approach 1:
The patent employs asymmetric antenna arrangement where two antennas are positioned at different locations on the orienting assembly. This asymmetric configuration enables the system to detect both position and orientation by calculating time difference and phase difference of signals received at the two differently positioned antennas, achieving accurate orienting while maintaining relative structural simplicity.
Solution Approach 2:
The patent transitions from single-dimensional positioning (single antenna) to two-dimensional spatial detection (dual antennas). By adding the second antenna dimension, the system gains the capability to detect orientation in addition to position, using signal propagation characteristics in the spatial domain without significantly increasing overall device complexity.
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
Enhances man-machine cooperation by allowing the robot to accurately follow and accompany the operator, improving accompaniment experience and reducing manufacturing costs through a simple and practical structure.
Implementation Method 1
the orienting assembly includes an antenna I capable of implementing positioning, an antenna II capable of implementing orienting in cooperation with the antenna I, and a processing chip capable of processing a signal time difference or phase difference between antennas
Data Source
AI summary
Provided are a robot accompaniment device and a four-legged robot (1) using the same. The robot accompaniment device includes a target module provided with an orienting assembly (3). The orienting assembly (3) is provided with a dual-antenna structure, and implements positioning and orienting between the accompanier and the accompanied, thus enabling a robot to be capable of recognizing the position, orientation and turning angle of an accompaniment object (2) relative to the robot, and moving and turning together with the accompaniment object (2).