Four Basic Rules for Good Design-In of Environmental Sensors

In a world where everything becomes smarter and more connected the Internet of Things is on the rise. Due to increased demand on mobility and convenience battery-driven devices hold an increasingly important role in this. For engineers the development is challenging: it involves knowledge about connectivity, energy harvesting and management, software and sensor integration.

By Daniel Lehmann, R&D Engineer at Sensirion


In order to take full advantage of the performance and features of environmental sensors, e.g. humidity and temperature sensors, mechanical design rules need to be considered. Unbeneficial housing and PCB designs may cause unexpected temperature and humidity deviations and could increase the response time. Simply following four basic rules makes the integration easy and straightforward. From our experience, we recommend to take the mechanical integration of the sensors into account in a project as early as possible. The complexity of the integration will increase the later the housing is designed.

A. Most important the sensor has to be exposed to the ambient as much as possible and large openings in the housing should be used. This guarantees a fast system response and the influence of the housing can be minimized.

B. Furthermore, the sensor enclosure should be isolated from the other parts of the device. This will reduce offsets of the integrated system.

C. As third advice, the volume around the sensor, so called dead volume, needs to be minimized. This will result in a decreased response time.

D. Last but not least the sensor should be placed in an area without heating sources like Microcontrollers and ideally thermally decoupled. Otherwise, the heating effect of other components gives an offset to the sensor signal. If a mechanical solution is not sufficient to solve the issue, Sensirion also offers software based compensation for that.

More information regarding design-in can be found in the “Sensirion Design-In Guide”, which is available in the Downloadcenter of Sensirion’s website. The information in this guide should be partly transferable but not exhaustive for development of non-battery driven IoT devices and to the design-in of other environmental sensors.

Find more information about Sensirion’s new ultra-low power humidity sensor SHTC3 for battery-driven applications on www.sensirion.com/new-shtc3


Related


Logic Innovations for space and power savings

In  this webinar the latest Nexperia logic developments and package trends will be presented. System intelligence will be determined by the functionality of the logic circuits, and the efficie...

Slimming program for medical operating devices

Operating devices in the medical sector are not only subject to strict controls and requirements. Nowadays design demands are becoming more and more important for developers of medical HMI devices. De...

Establishing a root of trust to secure the IoT

Security is not something that any developer can ignore. It is no longer safe, for the OEM or their customers, to assume that their product or service is immune to cyber attacks. The sheer size of the...

Securing the smart and connected home

With the Internet of Things and Smart Home technologies, more and more devices are becoming connected and therefore can potentially become entry points for attackers to break into the system to steal,...

Acoustic MEMS - letting systems listen to the world

Ambient intelligence is fast becoming a mainstream technology. Many homes now have some form of smart speakers that understand spoken commands. Car dashboards and navigation systems use voice control ...

Mass Connectivity in the 5G Era

5G will achieve faster transmission rates, more powerful data exchange networks, and more seamless real-time communication, which will enable tremendous growth for advanced and innovative connectivity...

 


Arduino CEO Fabio Violante on their migration upwards in engineering

In this video Arduino CEO Fabio Violante talks about their ambitious migration upwards in engineering solutions and products with Alix Paultre in Tegernsee, Germany. Arduino, long known for their deve...


Silicon Lab CEO Tyson Tuttle talks about their wireless IoT portfolio

In this video Silicon Lab's Tyson Tuttle talks to Alix Paultre about their new wireless IoT portfolio. Wireless Xpress provides a configuration-based development environment, with certified Blueto...


Keysight's Joachim Peerlings talks about the new UXR series Oscilloscope

In this video Keysight's Joachim Peerlings talks about the new UXR series Oscilloscope with Alix Paultre at their launch event in Munich. The Infiniium UXR-Series of oscilloscopes has models rangi...


BrainChip explains their new Neuromorphic System-on-Chip

In this video, Bob Beachler of BrainChip talks to Alix Paultre about their latest single-chip neural network technology.  Spiking neural networks (SNNs) are inherently lower power than traditiona...


Vincotech – EMPOWERING YOUR IDEAS

In this video the Vincotech team walks us through the most important topics displayed on their booth at PCIM Europe 2018. It also explains why Vincotech is First in SiC Modules. Being very flexible in...


Microchip talks about their latest secure microcontroller

Microchip's new SAM L10 and SAM L11 families of 32-bit microcontrollers (MCUs) address the growing need for security in Internet of Things (IoT) endpoints by protecting against the increasing the ...


E-Mail Newsletters

nlsc240

Our 3 E-Mail Newsletters: EETimes/EDN Europe, Embedded News and Power Electronics News inform about the latest news in technology and products, as well as technical know-how like white papers, webinars, articles, etc.


B & S / ECE Magazine

- latest issue is online now -

November 2018

Content Highlights

Cover Story

Internet-connected displays make the industrial IoT more visible

Download now