Abstract
In this work, three different concepts are used to develop a fully passive sensor that is capable of measuring different types of data. The sensor was supplied by Wireless Power Transmission (WPT). Communication between the sensor and reader is established by a backscatter, and to ensure minimum energy consumption, low power techniques are used. In a simplistic way, the process starts by the transmission of two different waves by the reader to the sensor, one of which is used in power transmission and the other of which is used to communicate. Once the sensor is powered, the monitoring process starts. From the monitoring state, results from after processing are used to modulate the incoming wave, which is the information that is sent back from the reader to the tag. This new combination of technologies enables the possibility of using sensors without any cables or batteries to operate 340 cm from the reader. The developed prototype measures acceleration and temperature. However, it is scalable. This system enables a new generation of passive Internet of Things (IoT) devices.
Highlights
The concept of Wireless Sensor Networks (WSNs) has for some years attracted great academic and industrial attention
The applications can range from environmental sensing and wearable biometric monitoring to security and structural monitoring, which perhaps realize the Internet of Things (IoT) concept [1,2,3]
Dickson multiplier, which allows for allows for Radio Frequency (RF)-Direct Current (DC) conversion to provide sufficient DC power to supply the microcontroller
Summary
The concept of Wireless Sensor Networks (WSNs) has for some years attracted great academic and industrial attention. WSN scalability is dependent on reduced costs and long-term deployment without battery replacement. To address these constraints, systems have emerged that utilize communication by means of reflected Radio Frequency (RF) power [1].
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