Wondering what it takes to develop RFID sensors on your own? Learn the key actions to follow and take advantage of our experience with our own developments.
So you have taken the decision to move forward and give battery-free RFID sensors a go. You have read a lot of information, learnt about how RFID works both for wireless power transfer and communication, and many other topics.
After assessing your situation and thinking that the size and performance of our existing sensor tags are good enough for you, the only thing that is wrong at this point is the actual sensor. You want to start testing with battery-free solutions but the sensor you need in your application is not within our product range. So what do you do?
Develop your own sensor tags
Yes, you’re going to develop your own. The schematics, BOM and design files for the existing products are available and free to download from our website. Just visit the webpage of the product that’s closer to your development in terms of electronics and download the resources.
This will ease your work in schematics and the antenna design, leaving you the only work of changing the sensor correctly. Yes, you could optimize the antenna for a higher sensitivity of the tag, you may be able use different components to reduce cost or optimize performance of the tag. However, during this series, we will focus on a simple sensor change.
Now… what does ‘simple’ mean?
Well, changing a sensor may sound – and actually be – simple. The challenge is to implement this new sensor to work on your advantage.
There are three main topics you will have to address:
- Hardware development. Even though we will be using the same antenna, part of the schematics and even part of the layout, the new sensor will probably require small changes in the hardware. You will have to check whether the start-up circuit remains useful, requires changes in component values or even needs a complete redesign.
- Firmware development. If you are using a digital sensor with SPI that can directly be used with the RFID chip you’re lucky. This is something you don’t need to care about.For all the rest, you will have to use a microcontroller and, of course, program it correctly for your application.
- Software development. We do offer a free testing SW for our products. However, each sensor requires specific commands to be activated. You will have to program the reader software to send the commands your sensors require.
For more information about read range in RFID systems download the ‘Develop your own battery-free sensors like a pro‘ free eBook.