HEALTH & SAFETY


can often take months to certify, with multiple design reviews and changes along with extensive device testing. In addition, only a few labs globally have the ability to provide the certification which adds to the time needed and complexity. Manufacturing an IS product


and certifying it to be used in hazardous locations across the world is a challenging task for the original equipment manufacturer (OEM). RealWear works with industry experts such as i.safe Mobile that incorporate international standards into product development and are also members of relevant standards committees. To fulfil requirements for explosion protection, products are developed from the ground up, so users all over the world can be sure they are using equipment that is fully compliant with current standards.


DESIGN CHALLENGES Now that the the definition of IS


has been tackled, let’s discuss the challenges that were surmounted in developing RealWear’s latest wearable product, the Navigator Z1, an advanced hands-free IS wearable. Compounding the IS challenge


previously discussed, the company wanted the device to be modular, without needing dangerous tethering or wiring to a phone, while remaining hands-free and voice controlled. The team planned to build on the strengths found in the original HMT- 1Z1 IS device. The around-the-head “horseshoe” form factor ensured the product’s weight is balanced and comfortable to wear, especially


with the wide variety of safety helmets used in the field. Making this shape


also IS (as opposed to a much more common rectangular mobile phone or tablet) was a massive undertaking. For instance, fitting the electronics in the Navigator Z1 required many more circuit boards and unique wiring (Imagine building a mobile phone in the shape of a horseshoe). The device must accommodate one’s head and movement, so it must bend, rotate and flex in multiple directions, even after multiple years of rugged use. RealWear expects such a device to be used for about five years. Part of testing the device involves subjecting it to the harshest conditions that it could face during its lifetime, including impact, heat, cold, humidity and more. The device is to be designed to


take that beating and still function flawlessly. It must also improve on the original lineup (i.e. HMT-1 and HMT-1Z1, respectively) by increasing compute power and introducing AI Core, the most powerful processor ever in a RealWear device using the powerful Qualcomm 6490 chipset, which is active until 2036 as part of Qualcomm’s extended life programme) - designed for on-device enhanced AI experiences). The company aimed to make


frontline workers more productive and safer by reducing weight and introducing the concept of modularity, as mentioned. It wanted the battery and camera module to be integrated yet removable; that is, swapped


The RealWear Navigator Z1


out outside of the zone. This had never been done before. Finally, it had to maintain or even improve on the rugged standards required by industries such as oil and gas. Understandably, an IS product must


go through a rigorous set of tests put forth by experts in the field of safety. Due to the success of HMT-1Z1, RealWear teamed up with i.safe Mobile for the second time. In summary, the requirements


for RealWear Navigator Z1 were as daunting as they sound – the team wanted to develop it as something users would have in their digital toolbox for years to come. The modular approach allowed components to be upgraded or to offer a specialised function and return on investment. The team also wanted it certified not only in zone 1 (gas), zone 21 (dust) but also for mining use. The headset needed to be lightweight, rugged, powerful and modular – all while still achieving intrinsical safety certification.


A CAUTIONARY NOTE It’s worth noting that not all IS devices are created equally. In fact, RealWear has observed several products being advertised as IS that don’t carry certifications and verification. This is a safety concern and it’s important to request certification details from vendors and ask the appropriate questions up front. RealWear is currently pursuing multiple certifications that will be announced in 2024 to ensure it can offer frontline workers the best standard in IS technology.


Users can log real-time inspection data based on situational hazards


Rama Oruganti is chief product officer at RealWear. www.realwear.com


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