bcsinnovations

Inside Innovations
HOT ROCKS AT MACQUARIE! Print E-mail
Written by Nathan Parrott   

 

(Image of Griggs Laboratory at Macquarie University)

BCS has been helping researchers at Macquarie University with their study of rocks which deform and flow under extreme conditions of temperature and pressure. These types of experiments have been critical to advancing our knowledge of our planet, as they allow us to simulate regions that are inaccessible, such as the earth's deep crust and mantle.

The Experimental Petrology and Rock Deformation Griggs Laboratory in the Earth and Planetary Science Department at Macquarie University has for some time been researching magma production and how magmas escape from their source. Laboratory experiments on natural rocks are helping to determine the variables controlling melting, melt segregation and the rates of these processes. In order to further their research, The laboratory asked BCS Innovations to design a custom data logging and control system to integrate with their Griggs Press apparatus, which can subject rock samples to temperatures in excess of 1000C and pressures of 25,000 atmospheres.

The system was designed by BCS engineer Nathan Parrot and was implemented using National Instruments hardware integrated into a cDAQ-9172 backplane, with software and a graphical user interface for control and feedback designed using Labview 8.0. Data from the experiment is displayed graphically in real time, and also logged for post-experiment analysis.

The control system:
- regulates the furnace temperature between 20C and 1500C. This is done via mains phase control on a 2.4kVA transformer (300A at 8V) supplying power to a heater,
- controls an electronic ram (which produces the principal “σ1” stress in the rock sample) using a relay and digital outputs, and
- controls a hydraulic ram (which produces the secondary “σ2 and σ3” stresses) using a solenoid valve and digital outputs.
The data logging system acquires data from a variety of sensors, including:
- a platinum-rhodium thermocouple to measure sample temperature,
- several sensors to measure sample strain and stress, including:
load cell for the electronic ram,
hydraulic pressure transducer for the hydraulic ram,
a DC LVDT displacement sensor,
- a Hall effect sensor and custom electronics to measure heater current and voltage, and
- a fluid flow sensor to monitor cooling water flow
The completed system was successfully commissioned in December 2009. An example of the experimental data produced by the system is shown below.

Griggs Laboratory Graph from Macquarie University

Both BCS Innovations and the Experimental Petrology and Rock Deformation Griggs Laboratory are very pleased with the functionality of the system and we hope that it will contribute greatly to the field of magma production and release research. For more information on the experimental work in this field, visit: www.gemoc.mq.edu.au/ExperimentalPetrol/ExperimentalPetrol.htm

 

 
Blood Glucose Meter Case Study Print E-mail
Written by Lyn Vicary   

Andy Wyatt interviewed by Lyn Vicary

How long had you been with BCS when you were given the glucose meter project?
About 4 months actually! I wasn't given it as my own project, David ran it but I did the majority of the design work.

How many of you worked on it, or was it a one person project?
It was mostly me, I did the electronics, optics, firmware and software. I had a lot of help from the senior engineers Mac, Steve and of course David.

What was the original brief and how different is it from what the client envisaged?
Originally the intention was for an ultra low cost unit, as simple as possible. The spec changed a bit in that it became more of a premium product, with a custom display and a smart card to record the patient data as well as the factory calibration information. The beeper for audio feedback was also a later addition. These functions definitely made it a much better product than it otherwise would have been, and we still managed to get the build cost down low enough for volume production.

What was your greatest technical challenge in developing this product?
The original design wasn't too complex, but that was largely because we employed risk mitigation along the way. I wrote a "simulator" to demonstrate how the user interface would look, and this allowed us to get the custom LCD right the first time. We built up plastic mock-ups of the optics subassemblies before the detailed industrial design was commenced.

How long did it take to complete?
Only 10 months from starting the project to the client demonstrating it at the Medica conference in Germany!

What do you think was the deciding factor in winning the Australian Design Award of the Year ?
I think the judges were impressed with the design methodology we took. The product was also beautifully designed from an Industrial Design perspective, both in form and function. Neilsen Design did a great job of the Industrial Design.

What would you say was your greatest insight into bring a successful project like glucose meter from idea to completion?
Greatest insight? Make sure you mitigate risks as you go - test things early and often. Work closely with the client and all other parties (eg the industrial designer); the closer those relationships, the better the product and the smoother the process.

 
Newsletter 2009 Print E-mail
Written by David Bull   

Merry Christmas From the team at BCS 2009

 
BCS Wins Engineering Excellence Awards Print E-mail
Written by Cameron Batt   

The BCS Innovations and 1x Team Back Row From Left: Brett Barnard (1X), Linda Barnard(1X), Clement Cheung, David Bull Front Row From Left: Andy Wyatt, Jasmine Pouladi, Steve (Mac) Rowe

The BCS Innovations and 1x Team
Back Row From Left: Brett Barnard (1X), Linda Barnard(1X), Clement Cheung, David Bull
Front Row From Left: Andy Wyatt, Jasmine Pouladi, Steve (Mac) Rowe

 

BCS Innovations had a fantastic night at the 2009 Engineering Excellence Awards. Winning the Products, Manufacturing Facilities and Process award and being highly commended in the Software and Embedded Systems category. Both Awards were for the Linehaul R247 fixed in Vehicle Phone specifically designed for trucks.

For more information see our Keep on Trucking article

 
The Faces of BCS - Steve (Mac) Rowe Print E-mail
Written by Lyn Vicary   

 Steve (Mac)Rowe (Electrical Engineer) Having fun at the 2009 Engineering Excellence Awards

Steve ‘Mac” Rowe (Electrical Engineer) Having fun at the 2009 Engineering Excellence Awards

How long have you been with BCS?

About 9 years full time. But I was doing consulting work for BCS for a year or so before then.

What were you doing before then?

I was at Polartechnics, working on a cervical cancer diagnostic device. I was doing a lot more electronics in those days and learned the hard way not to design based on preliminary datasheets.  I designed a DSP based system using the bleeding edge of ICs, but when the DSP chip was officially released, it had half the maximum clock rate the preliminary datasheet predicted.  This caused me quite a bit of angst, but we made some savings in another area to cope.  I'll never make that mistake again!


Who was here when you started?

Dave Bull and Steve Sommer. They were working in Dave's garage on fold out desks in Marsfield, Sydney.  They cleared a patch in the corner, and I joined.

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