Organize and Share your Electronics the way you want. Sign-Up for a free account now. It takes only 30 seconds!

Open Source Project Proposes Vision-Free Grasping With RFID and Touchscreens

Open Source Project Proposes Vision-Free Grasping With RFID and Touchscreens

Liatris is an open-source hardware and software project (led by roboticist Mark Silliman) that does away with vision completely. Instead, you can determine the identity and pose of slightly modified objects with just a touchscreen and an RFID reader. It’s simple, relatively inexpensive, and as long as you’re not trying to deal with anything new, it works impressively well.

To get around the perception problem, Liatris uses a few clever tricks. First, each object has an RFID tag attached to it with a unique identifier, so that the robot can wirelessly detect what it’s working with. Once the robot has scanned the RFID tag, it looks the identifier up in an open source, global database of objects and downloads a CAD model and a grasp pose that “defines the ideal pose for the gripper prior to grasping the object.”

So now that you know what the object is and how to grasp it, you just need to know exactly where it is and what orientation it’s in. You can’t get that sort of information very easily from an RFID tag, so this is where the touchscreen comes in: Each object is (slightly) modified with an isosceles triangle of conductive points on the base, giving the touchscreen an exact location for the object, as well as the orientation, courtesy the pointy end of the triangle. With this data, the robot can accurately visualize the CAD model of the object on the touchscreen, and as long as it knows exactly where the touchscreen is, it can then grasp the real object based solely on the model. The robot doesn’t have to “see” anything: you just need the touchscreen and a RFID reader, and a headless robot arm can grasp just about whatever you want it to.

Source: Open Source Project Proposes Vision-Free Grasping With RFID and Touchscreens – IEEE Spectrum







 

More Articles to Read

Peeqo is a desktop bot that communicates through GIFs
Peeqo is a desktop bot that communicates through GIFs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Using a Programmable Input Multiplier to Minimize Integer Boundary Spurs
Serial seven segment LED display shield
Serial seven segment LED display shield
G-code controlled drawing plotter
G-code controlled drawing plotter
An Arduino round word clock
An Arduino round word clock
The Sandwich-o-Matic will make your lunch automatically
The Sandwich-o-Matic will make your lunch automatically
Scalar Network Analyser Jr
Scalar Network Analyser Jr
An Arduino-controlled automated whiskey distillery
An Arduino-controlled automated whiskey distillery
The Rex800 looks like a dinosaur Terminator
The Rex800 looks like a dinosaur Terminator
Home Environment Monitor
Home Environment Monitor
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
Understanding the Operation of the Frequency Synthesizer in Maxim’s RF Transceivers
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
App note: EPIC: Electro-Pyrotechnic Initiator Chip Resistor
Noisy ESP8266
Noisy ESP8266
App note: Noise analysis for high-speed op amps
App note: Noise analysis for high-speed op amps
Skill Sunday: Arrays
Skill Sunday: Arrays
App note: Infrared remote control implementation with MSP430FR4xx
App note: Infrared remote control implementation with MSP430FR4xx
Gesture Controlled Smart Home
Gesture Controlled Smart Home
Design for a Wideband, Differential Transimpedance DAC Output
Design for a Wideband, Differential Transimpedance DAC Output
Wrist thrusters let you fly through the water effortlessly
Wrist thrusters let you fly through the water effortlessly
Bertan/Spellman 225-20R HV power supply teardown
Bertan/Spellman 225-20R HV power supply teardown

Top


Shares