editor's blog
Subscribe Now

Sensors for the 1%

A frequent topic at events like the Interactive Technology Summit (ITS) is the increasing presence of sensors in phones and other gadgets. But it’s reasonable to ask how many of those sensors will be needed by the majority of people. It’s kind of an 80/20 thing, and the obvious follow-on question is, what to do about the 80% of sensors that 80% of the people don’t need?

One company presenting at the ITS was Variable; they introduced their Node+ sensor platform, which implicitly contains one answer to this partitioning question. They see phones as taking on the following sensors:

  • Accelerometer
  • Gyroscope
  • Magnetometer
  • Ambient Light
  • Proximity
  • Fingerprint
  • Microphone
  • Camera
  • Humidity
  • Barometer
  • GPS

And, far from being an 80/20 thing, they see these as satisfying 99% of phone users. But there are still “professionals” that will need sensors beyond these, many being very specialized. Rather than burdening the entire phone with them, they would be external, leveraging the phone as a platform for apps that communicate with the external sensors. They listed the following as opportunities for such sensors (with my parenthetical comments):

  • Vibration (phones might theoretically be able to do this, but the sensor ranges and quality may not be sufficient)
  • Motion tracking (actually, this is already being done in phones, to some degree…)
  • Temperature (although there’s probably a good chance many could use this…)
  • Force
  • Color
  • Gases
  • Radiation
  • Medical
  • Noise
  • Air flow
  • Distance

They’ve done yet another partition by separating out what they call the platform from the sensors themselves. The sensor contains the transducer and analog front-end (AFE). The cleaned-up analog signals are delivered to the platform, which, in conjunction with the phone (attached via BlueTooth) handles analog-to-digital conversion, local processing via firmware on a microcontroller, and an application layer (and possible connection to the cloud). The platform (below), a small cylinder, can accommodate two sensors – one at each end.

(I was hoping to include pictures, but I received no response to my request for permission to use their images.)

The sensors themselves are sold separately (with the exception of a 9-axis motion sensor within the platform). Currently-available modules include (shown in order below), a “luma” module for lighting a scene (seems more of an accessory than a sensor), a remote “therma” thermometer, a weather/environment “clima” sensor, a color-matching “chroma” sensor, and an “oxa” gas detector capable of sensing CO, NO, NO2, Cl2, SO2, and H2S.

Of course, this kind of partitioning may involve more than a technical breakdown of the 99/1 rule. Other critical factors would likely include simple business model considerations (higher revenue by selling attachments) and control: they don’t control what goes into the phone. If phone makers decide that there is value to some of these (like, for instance, the weather sensor) for the 99%, and if they think they can differentiate their phones with them, then a separate module will look less attractive.

So this partitioning is likely to shift with the vagaries of the market.

You can find more at Variable’s website.

Leave a Reply

featured blogs
Oct 19, 2018
过孔转换对信号布线来说十分常见。在高速设计中过孔转换是造成PCB互连中信号衰减的主要原因。而且高é...
Oct 19, 2018
Any engineer who has designed an IC-based solution likely used some sort of HW development tool. Semiconductor manufacturers have a long history of providing engineers with the HW tools needed to test their silicon. Evaluation platforms, like the Xilinx® Zynq UltraScale+ ...
Oct 16, 2018
  IC Insights has just published the September Update to The 2018 McClean Report, and one figure (reproduced below) puts yet another nail into the coffin for poor old Moore'€™s Law. Now please take care. There'€™s a vertical line between the 200mm wafers on the left ...
Oct 12, 2018
At the end of the day, your products are only as good as their in-the-field performance. It doesn'€™t matter how well they performed in a controlled environment....