Prototyping a Dynamic Wifi Antenna Rig

Wandy is designing an antenna rig with the capability to track its wifi AP via GPS and motion sensing. This rig is designed to be installed on maritime vessels in order to provide a high quality wifi link to shore based access points. The built-in GPS receiver will give the rig its current position and heading and calculates its angle towards the shore based AP.
The shore based AP locations are hard-coded into the rigs software, and compared with the rigs current sector in order to allow several different AP’s to be registered according to location. This current model has not got the gimbal system installed yet. This will counter wave movement of the ship by motion sensing and keep the antenna levelled with the AP.

This prototype was built using Makerbeam. Makerbeam gave us the flexibility to quickly change the design in order to develop new features. The first housing, was 10 x 10 cm and turned out to be too small to fit the embedded router-board. Changing the dimensions was as simple as changing your socks, and in no time we had a larger base.
One of the things that makes Makerbeam so well suited for this project is its aesthetic properties.The black anodised beams have a beautiful finished look to them. With a couple of black polystyrene sheets and a Stanley knife, the prototype looks the part in a matter of minutes.

The threaded beams enabled us to use the corner cubes and this gives the prototype a real design look. Makerbeam enabled us to make a prototype we can actually show to potential customers without having to make too many excuses.

In the video you will see the device waiting for a GPS lock and doing a calibration by the flick of a switch. Note the awesome design lights on the bottom of the rig.

httpv://youtu.be/PTKTet0h9oo

Ammer van Bussel
Netwerk engineer
Wandy

Warwick Mobile Robotics and the RoboCup Rescue competition

The Warwick Mobile Robotics entry at work at the Robcup Rescue German Open 2014
It's definitely looking like a robot now! Update: Friday March 28, 2014

Warwick Mobile Robotics is a research project carried out by a team of fourth year undergraduate students at the University of Warwick in the UK. The project involves the creation of a search and rescue robot designed to locate survivors in hazardous environments, such as earthquake disaster zones; removing emergency service personnel from danger.

The project has been running for the last seven years. Each team has made alterations to develop the previous robot design. This year, we are designing, manufacturing and programming a whole new, smaller, lighter robot capable of navigating moderate terrain in a smaller environment.

The aim is to develop a modular structure which will allow the robotic platform to be easily modified by future teams. The design will be focused towards achieving a low cost model with key features such as reliability, maintainability and modularity. It must have a maximum turning radius of 0.5 metres and a maximum weight of 25kg which makes it deployable by one person. The long term aim of the project is for the prototype to be further developed by future teams into a commercially viable design.

In order to achieve these design aims we have opted to use MakerBeam and OpenBeam for the chassis and arm structures. The off-shelf beams and fittings provide the perfect solution to our design requirements. The beams themselves have the required structural integrity, are lightweight and can easily be cut to length. Assembly times will be short due to the design of the beams and future years will be able to modify the size of the structure with ease. This suits the modularity of the design.

The team are testing the robot’s capabilities at the RoboCup Rescue competition held in Germany in Magdeburg during the Easter break (April 3-5). The RoboCup Rescue is a competition that tests the robots search and rescue abilities in a simulated disaster environment. The team has decided to enter this competition as it provides an exciting engineering challenge beyond the scope of our undergraduate project requirements and a socially significant real world application for mobile robotics. The team won “Best in Mobility” from 2009-2012, “Best in Manoeuvrability” in 2012 and won the competition in 2010. Last year, the team entered the World RoboCup competition for the first time and placed 10th in the world. Our aim for this year is to enter two robots into the European competition for the first time.

The team is really grateful for the support of MakerBeam in the creation of our robot and we are excited to assemble all of the parts which are currently being manufactured!

24/02/2014
Lauren Rutter (Sponsorship and Publicity Coordinator and Chassis Designer)