Target Following System Using RF and Laser Rangefinders
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Solution Overview
Problem
Existing target-following systems are too expensive and require improvement in tracing effectiveness, particularly for applications like smart luggage and golf carts that need to follow individuals automatically.
Innovation Solution
A method and system utilizing a signal transmitting RF module, a signal receiving RF module, and at least three laser rangefinders to calculate and maintain a directional angle and distance, dynamically tracking the target using laser rangefinders to ensure accurate and efficient following, with a controller managing the movement of the carrier to keep the target within a predetermined range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing target-following systems are used, then tracing ability is achieved, but cost is too high
Solution Approach 1:
The system divides the detection function into two segments: RF modules for long-distance detection and laser rangefinders for short-distance precise tracking. This segmentation allows each component to operate in its optimal range, reducing overall system cost while maintaining high tracing ability.
Solution Approach 2:
The patent introduces a dual-detection intermediary system where RF modules serve as the primary detection means for distance and angle, while laser rangefinders act as secondary verification. This intermediary approach enables cost-effective tracking by using cheaper RF technology for most operations.
2Productivity
If existing target-following systems are used, then following function is provided, but tracing effect needs improvement
Solution Approach 1:
The system dynamically switches between RF-based detection and laser-based verification based on distance conditions. When the target is within the control exchange distance, laser rangefinders provide precise tracking; otherwise, RF modules handle the detection. This dynamic adaptation improves tracing effect while maintaining following function.
Solution Approach 2:
The patent implements a feedback mechanism where the controller continuously monitors distance measurements from both RF modules and laser rangefinders, comparing results and adjusting the detection strategy. This feedback loop ensures high measurement precision by correcting for individual sensor limitations.
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 system reduces the overall cost of target-following carriers while enhancing tracing ability, allowing for compact integration on various moving carriers like smart luggage or golf carts, ensuring reliable and efficient tracking of targets.
Implementation Method 1
calculating an estimated distance between the signal transmitting RF module and the signal receiving RF module, and a directional angle... by RF signals sent from the signal transmitting RF module and received by the signal receiving RF module
Implementation Method 2
a first laser rangefinder has a tracing direction substantially along with the normal direction for sending and receiving laser beams
Data Source
AI summary
A system and a method for following a target are disclosed. The system includes steps of: A. providing a signal transmitting RF module mounted on a target, a signal receiving RF module on a moving carrier, and at least 3 laser rangefinders aside the signal receiving RF module; B. calculating an estimated distance and a directional angle; C. driving the moving carrier toward the target while maintaining the directional angle substantially 0 degree; D. repeating step B and step C until the estimated distance is shorter than a control exchange distance; E. dynamically tracking the target by one of the laser rangefinders so that a relative distance between said laser rangefinder and the target can be successively calculated while calculating the estimated distance and the directional angle; and F. driving the moving carrier to keep the relative distance within a predetermined range and maintain the normal direction substantially toward the target.