Three tech institutions join hands to develop IoT-compatible sensors for agriculture


Three premier Indian know-how establishments – IIT Bombay, Gauhati College and the Gandhinagar-based Dhirumbhai Ambani Institute of Info and Communication Know-how – have joined fingers to develop high-tech sensors to be used in agriculture.

Using sensors in agriculture isn’t fully new. These tiny merchandise, positioned underneath the soil, detect parameters akin to moisture and temperature and assist fine-tune inputs for increased produce. Bosch, for instance, has a collection of merchandise for this function.

Nonetheless, the sensors developed by the three establishments is extra hi-tech and may be hooked on to suitable with Web-of-Issues (IoT). They characteristic ‘ultra-small graphene particles’, comprised of graphene quantum dots, that are nano-sized fragments of graphene. Graphene, by the best way, is a cloth made from Carbon, the place the Carbon atoms are organized as a honey-comb sheet. The association of atoms imparts the fabric a number of incredible properties—graphene has been described to be “more durable than diamond however extra elastic than rubber, harder than metal, however lighter than aluminium.”

Graphene quantum dots are disc-shaped supplies made of some layers of graphene, measuring mere nanometers; they’ve been scoped for a wide range of sensing purposes. Synthesising graphene dots, nevertheless, isn’t straightforward.

The undertaking was funded by the Division of Science and Know-how, Authorities of India, the College Grants Fee, the Assam Science Know-how and Environmental Council.

Graphene quantum dots

Researchers engaged with the undertaking managed to provide graphene quantum dots of the scale of about 3-5 nano meters from graphene oxide. Doing this concerned plenty of scientific jiggery-poggery, akin to coating graphene oxide onto a carbon electrode, inserting it in an electrolyte and passing present by the arrange. Ultimately, they received their graphene quantum dots and with it they made sensors, every no greater than a grain of lentil. These sensors are purposed for measuring the moisture content material within the soil, which is claimed to be probably the most vital parameter in agriculture.

How the sensors work is one other topic by itself—the extra the moisture the much less they’re proof against present—however suffice to say that they provide a studying in three minutes and are good for use once more after 20 seconds. The researchers have checked out the steadiness of the product through the use of it constantly for practically six months. The sensors gave constant studying all through the interval and was discovered appropriate for a variety of soil water ranges.

Now that the product is prepared, the researchers are rubbing their palms for “copious discipline testing”, Hemen Kumar Kalita, one of many researchers, advised Enterprise Line. Dr Kalita is an Assistant Professor of Physics a the Gauhati College.

Replying to an electronic mail, Kalita mentioned that when produced on a industrial scale, these sensors could be very inexpensive to farmers—about Rs 1,500 apiece.

Requested how these sensors examine with these already out there (akin to Bosch’s), Kalita mentioned they have been higher each by way of accuracy and prices and may very well be interfaced with IoT “which makes this product technically extra useful.”

By way of ‘Know-how readiness degree” (or TRL, which is measured on a scale of 1 to 10, ten being market-ready,) Kalita mentioned the product was at TRL-7. “We are going to carry out copies discipline testing to make sure reliability and stability of the product,” he mentioned.

The establishments intend to license the know-how to start-ups.


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