Wearable Device

Designing modern wearable products is a complex task involving a complex array of steps and important system-level decisions that will carry on for the duration of the device lifetime. A structured approach that encompasses all the elements from enclosure design to the last miniature component on the circuit board is imperative to maintain control on the cost, delay and production efficiency. Motsai’s expertise help our clients build great products and get them to market.

The Challenge

Designing modern wearable products is a complex task.  It involves meeting stringent cost, power and integration issues in a fast-paced development environment.

A commercial product aimed at creating a novel wearable will be subject to the following constraints:

  • A very high time-to-market pressure
  • The need to create dense circuit boards using very small components
  • The confusing array of ‘low-power’ integrated circuits that all claim ultra-low consumption but which, when analyzed can vary 100-fold in their effective performance
  • A tight control on the bill-of-material to maintain margins
  • A need for a structured approach to firmware development
  • An understanding of the regulatory (CE, FCC, IC, RoHS) landscape of the future product
  • An in-dept knowledge of the design process to ensure mechanical and electronic fit with minimum integration risks

The Approach

The approach at Motsai begins with a deep understanding of all the parts that are needed to make a complete consumer products.  From the connectivity to the power storage, charging, security solutions and integrated radio and processor, our team keeps up to date with the latest products and technologies.  By working on the latest chipsets and through a constant evaluation of technology offerings, we are able to offer forward-looking solutions that benefit from lower cost per component and higher integration.

We then apply systematic mapping of the required client functionalities in the corresponding silicon sensor or subsystem to architect the wearable solution.  A thorough review of datasheets, performance and cost structure ensure that even at the architecture level, the performance of the product can be estimated and that all the trade-offs are clear.  Often, we are required to perform specific technological experiments to validate a sensor’s performance in the lab to ensure that risks are mitigated.

In parallel to the hardware architecture, we work with the best industrial design firms to carry the electronic design in parallel with the mechanical design.  This tight integration ensures that integration issues are addressed head-on in a pro-active manner.

Finally, we ensure that the firmware of the future wearable product is structured properly through the use of proper hardware abstraction layers and the use of a small real-time operating system.

Modern wearables integrate communication, data processing, storage, security and power management in the firmware.  It thus becomes very important that the firmware be structured to handle multiple developers working on various portions of the code without them interfering with each other.

The Results

With this structured approach to commercial wearable electronic design, we have allowed local companies to raise significant funding (20+M$) and help them create wearable products.  Motsai was able to follow through with the design from the ideation phase to the transition to mass production.


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"We have collaborated with the team at Motsai on the design of many projects ranging from telecommunication devices to highly-visible and successful consumer electronic products. Their expertise is unique and they deliver great value in the design of electronic products."

Daniel Tassé, President, TAK Design Industriel

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