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How Passive RFID Temperature Sensors Work
May 14, 2018

How Passive RFID Temperature Sensors Work


Passive RFID temperature sensors provide options for temperature data collection that offers advantages over other types of battery powered sensors.

 

Adding to our series of posts around Passive Sensors and Passive Moisture Sensors, in this article we take a look at another popular type of passive RFID sensor, the Passive RFID Temperature Sensor.


We know the effect of extreme temperatures on business processes and materials. For years, we’ve produced a range of durable RFID tags and labels made to withstand hot and cold.  


Today, we have new technology – passive RFID temperature sensors – to help you measure temperature in new and powerful ways.


Monitoring changing temperature

Temperature sensing has been used for some time across a range of materials and environments, especially in warehouses, greenhouses, laboratories, factories and other industrial uses. However, traditional sensor technologies suffer design challenges and high installation or replacement costs.


How do passive RFID temperature sensors detect temperature?

Passive temperature sensors, utilizing the chip, identify temperature based off of circuit theory and the ability of temperature to change the voltage across a diode. This affect can make a portion of the chip a temperature sensor.  Since the temperature sensor tags return simple 12 -bit code based upon what it senses, and not an actual unit of measurement, these values can be used to correlate the temperature on almost any object.  The passive sensor’s antenna design and adjustable environmental tuning also provide a highly customizable sensing solution for almost any application.


XMINNOV makes durable, flexible passive temperature sensor tags that work using standard UHF frequencies (915/868 MHz).  These tags can be affixed or embedded into most materials and have a wide range of coverage.  Impedance changes are wirelessly communicated to standard EPC Gen 2 readers and interpreted with a software application.  The tags function in a range between -40°C to +75 °C,  covering operating conditions for most equipment and environments.





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    Add:No.1 Xiang Hong Road, Xiang An High-Tech Zone, Xiamen City, Fujian Province

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    Fax:+86-592-3365890

    Email:sales@rfidtagfactory.com

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