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The main objective of this article is to design and implement a wireless inductive type displacement transmitter. Wireless networks are playing a vital role in the modern process industrial environment due to their robustness, lower installation cost, low maintenance cost and low energy consumption in public frequency band domain. A simple, cost-effective general-purpose multi-channel hardware module has been designed using Radio Frequency (RF) transceiver in the field of wireless sensor network applications. The electric signal from the modified differential inductance bridge circuit is fed to the RF based wireless module for transmitting the sensor’s data to the control room of the process industry. The output of the sensor is conditioned in the range of 0–5 volt for the proposed system. This time varying analog data is converted into 8-bit parallel data. This 8-bit parallel data is transmitted through the transmitter module and then received by the receiver in the form of power. The output is decoded with the decoder of the receiver side. The decoded voltage signal is almost same as the output voltage signal of the sensor. From the experimental datasheet, it is reflected that this modified wireless RF based transmitter has good linearity and repeatability for short distance transmission. [ABSTRACT FROM AUTHOR]

In this study, an improved inductive pickup coil and an electro‐optic type displacement transmitter has been proposed. A modified differential inductance bridge network has been used to generate electrical signals and Mach–Zehnder interferometer (MZI) converts an electrical signal into an optical signal. The sensitivity of the sensor part of the transducer is very good because of two parallel magnetic paths for the inductive pickup. The theoretical equations explaining the operation of the transducer are derived. The proposed transducer is tested experimentally to obtain the static characteristics. The characteristics of the MZI‐based displacement transmitter have been observed by using PC‐based Opt wave Opti‐BPM.v.9 simulation software in the linear zone. The experimental and simulated results are reported in this study. Very good linear characteristics of the transducer with adjustable sensitivity have been observed. The transmitter output in the form of normalised intensity of light is also found to be linearly related with displacement. The theoretical equations derived in this are found to support the experimental characteristics to a very good extent. [ABSTRACT FROM AUTHOR]