editor's blog
Subscribe Now

A Mobile Environment Sensor

Bosch Sensortec recently announced a new environmental sensor, the BME680. It actually builds on prior devices. The first was simply pressure and temperature; the next added humidity; and the BME680 adds gas sensing to that.

 BME680.pngWe’ve looked at a variety of ways to do analyte detection in the past, so I was curious as to which of those Bosch used in this device.

And the answer is: none of the above.

The humidity is detected by a polymer that adsorbs water and affects a capacitance; then again, that’s not what’s new in this device.

The gas sensing is not as specific as what we’ve looked at. It’s a single membrane onto which a number of different analytes can adsorb. I wasn’t able to get much more detail than that; in general, they detect volatile organic compounds (VOCs) and alcohol. It’s a consumer-friendly sensor that doesn’t give specific numbers for specific gasses; it simply says whether or not there’s an issue with the air. It’s driven by the indoor air quality (IAQ) guidelines that regulatory bodies issue.

So while it may not be as selective or specific as what some of the other techniques provide, it is targeted at mobile devices, so size (3-mm square) and low power are key deliverables. And, realistically, it’s unlikely that most phone users would do much with specific analyte numbers anyway.

You can get more detail from their announcement.

 

(Image courtesy Bosch Sensortec.)

Leave a Reply

featured blogs
Mar 25, 2019
The 2018 AI Index Report , developed by scientists and researchers in the AI field was recently released. This report uses quantitative data, such as publication counts or mentions of AI, to assess... [[ Click on the title to access the full blog on the Cadence Community sit...
Mar 22, 2019
In the video above, it might not appear that much is taking place, but just like with transformers there is “more than meets the eye.” Alright, that was corny, and I am mildly ashamed, but Nanosecond Event Detection for shock and vibration is nothing to be ashamed...
Mar 21, 2019
A Race to the Finish: Announcing the Winners of the 2019 3D InCites Awards Mentor Embedded Linux launch targets enterprise-class gap Using AI Data For Security How to optimize your testbench-to-DUT connections VCSEL Technology Takes Off A Race to the Finish: Announcing the...
Jan 25, 2019
Let'€™s face it: We'€™re addicted to SRAM. It'€™s big, it'€™s power-hungry, but it'€™s fast. And no matter how much we complain about it, we still use it. Because we don'€™t have anything better in the mainstream yet. We'€™ve looked at attempts to improve conven...