outerspace electronic and embedded software engineers have developed a miniature Insitu Thermoelastic Stress (ITS) camera for 1 MILLIKELVIN (1mK). The camera complements an impressive product line-up of cameras that outerspace has developed for 1mK.
Engineered for stress validation of mechanical structures, including aircraft frames, the mini cameras and software ‘close the loop’ of the Finite Element Method without the need for strain gauges within seconds.
Measuring only 45mm wide x 48mm high x 98.5mm long, the miniature camera includes primarily a microbolometer and visual camera and images are processed onboard by a quad core computer.
The miniature ITS camera. A unique combination of technical features:
- a thermal image sensor – 14 mm microbolometer and 8.7mm microbolometer:
A microbolometer is an uncooled thermal sensor for detecting infrared radiation. The uncooled nature of the sensor allows it to be compact. The core technology in the product can improve the signal-to-noise quality, and as the name 1 MILLIKELVIN suggests, it can detect extremely small changes in temperature of a sample and directly correlate this with stress and strain.
- a high resolution visual camera:
Unlike the thermal image sensor, this camera can give a human recognisable picture. Both images can be overlaid to allow easy test setup and interpretation of the sample under test, whether that is an airframe structure, a metal test coupon or any object that is under test.
- onboard image processing and edge computing:
High compute and high memory are packed inside this little camera. It has an Advanced RISC Machines reduced instruction set computer (ARM) quad core with up to 8 GB of internal memory. Images are captured from the cameras and processed onboard. Multiple cameras can be networked for more complex thermoelastic stress analysis.
advanced engineering technologies combined for a perfect result:
- image serial processing
- rigid-flex printed circuit boards
- USB3 with digital serial processor
- ARM computer
- robust design with ingress protection
- security SHA 256 in hardware for intellectual property protection
specialised electronic and embedded software engineering focus
Our product development team provided overall project management expertise, with a focus on specialised electronic engineering and embedded software engineering to create an innovative and powerful miniature camera system for 1mK, with product design and development for exterior styling.
The miniature thermal camera and its predecessor (below), the original 1mK camera, were developed in close collaboration with 1mK and defence industry providers in Australia.
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