I am currently working on the project similar to candy trek mobile autonomous robotic golf Cart caddy. i would really appreciate help on how the RF signals are used to find the direction or to locate the golfer.
The manufacturer doesn’t give much information about their system, but it seems to be using the time the signals are detected by two sensors on the robot to get an idea of range and angle:
“What allows the CaddyTrek to follow you hands free? CaddyTrek is a proprietary robotic system with advanced sensing and motion control technology. Sensors on CaddyTrek pick up signals from the remote handset worn by the golfer to determine distance and angle.”
Also from the manual: robotshop.com/media/files/p … Manual.pdf
“CaddyTrek can be used in groups as large as four because the handset and signals are paired specific to each specific unit.”
“Our follow technology operates by A sensor sending out a signal to the handset. The handset then returns the signal to sensor B and the position is calculated between the three points. When physical objects are between the sensors like a shirt, towel or jacket, the signal can become disrupted. When using Follow Mode make sure there is nothing between the front face of your handset and the sensors on the unit.”
“User needs to be aware of obstacles and how they can affect the Ultrasound signals. Use caution and move slowly around obstacles.When in doubt, use RC or Push mode.”