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Vol. 190, Issue 7, July 2015, pp. 47-52




Online Monitoring of Temperature Using Wireless Module in a Rotating Drum-Applicable
to Leather Industries

1 T. Narayani, 1 * Rames C Panda, 2 Sobana S. and 1 C. Muralidharan

1 Principal Scientist, Central Leather Research Institute, Adyar, Chennai-600020, India
2 Asst Prof, E&I Dept, Eswari Engg College, Chennai-89, India

*E-mail: panda@clri.res.in


Received: 31 May 2015 /Accepted: 30 June 2015 /Published: 31 July 2015

Digital Sensors and Sensor Sysstems


Abstract: In order to ensure safe and efficient operation of unit processes, foremost requirement is accurate measurement of process variables, with which quality can be monitored and controlled. Understanding the necessity of online monitoring of process temperature in tanning/dyeing process, the article is focused on wireless measurement of physical parameters involved in wet processing of hides/ skins and monitoring through digital computer for further analysis. Its a challenging task to measure and communicate the process information from a closed rotating drum. Wireless communication is proposed because of its enhanced security, superfast operating speed, and increased mobility. The physical parameters which are predominant in tanning process are temperature, pH, conductivity etc. of the process fluid. It is necessary to carryout dyeing at 65 0C for producing raw to wet blue process. As a first attempt, wireless module for temperature measurement has been developed. The module includes signal transmitter and receiver section. In the transmitter section, the temperature which is measured by an integrated sensor is converted into frequency signal and imposed on a radio frequency signal (career signal) and get transmitted in air. On the other side, receiver section receives the radio frequency signal and converts that into electrical signals to interface with the digital computer for online monitoring. The module is able to receive and control temperature of tanning drum within a distance of 100 meters. Real time experiments on the fabricated model show interesting results for commercialization.


Keywords: Leather tanning, RF transmitter, RF receiver, serial interface, online monitoring, Human-computer interface.


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