A freaky new Vibration Sensor inspired by Spider Sensory system

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Published: 06th February 2017
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The engineers in South Korea have designed a new kind of vibration sensor based on the functioning of the organ found in the spider legs. The crack shaped slit organ in Spider legs is made up of stiff exoskeleton on the surface and the soft flexible pad in the leg gaps which is directly connected to the nervous system. These pads are highly sensitive to the sound and vibrations and act as a prior warning system to spiders. It is how the spider escapes before you swat it with an object by sensing before you swing. The spiders usually scratch the leaves of a plant using their mouth and abdomen, so that its potential mate can be able to detect these vibrations using its slit organ. By copying the design of this organ, scientists developed an extremely flexible and sensitive sensor, which can find its application in wearable devices.

The experts have found the ground breaking applications for this sensor such as sensing the seismic activity prior to an earthquake, wearable blood pressure sensor, speech recognition, sound recording and other applications dealing with medical monitoring. This vibration sensor can also be utilized to gauge a pulse. At the point when worn on the wrist, the sensor can distinguish the heart compressions through the veins. When they put it on a violin, the sensor could recognize the diverse notes being played. It could likewise read out heartbeat of a subject if strapped to their wrist, and even permitted the group to differentiate between talked words when it was put on somebody's neck. The new sensor was made so sensitive that it even detected the flapping of the ladybug's wings.

Vibration Sensors also have their applications in wide areas as breathing monitoring, vibration in shock treatment, wear in manufacturing plants, measuring machinery vibrations and wind generation vibrations, and other automotive applications. They are also used to check construction quality, finger touch screens and digital displays. There also exist non-contact vibration sensors which can measure the vibration without a contact with object through a laser beam. Analysts at Mordor Intelligence have estimated a $34 billion market worldwide by the end of 2020.

The accelerometers, electrodynamic velocity transducers and non-contact displacement transducer form a part of Vibration Sensors. Based on the technology on which it operates, vibration sensors can be a Piezoresistive, Piezoelectric, hand probe, tri-axial and a variable capacitance sensor. The only two generic piezoelectric materials utilized in vibration sensors today are quartz and piezoelectric ceramics. While both are satisfactory for effective vibration sensor design, contrasts in their properties consider design adaptability.

For instance, cutting edge custom-made piezoceramic materials have good charge sensitivity over piezoelectric quartz materials. Most vibration sensor manufacturers now utilize piezoceramic materials designed specifically for sensor applications. They are developed to provide accurate data even under extreme operating conditions.
The synthetic sensor doesn't work precisely like the slit organ in spider, despite the fact that they have same shapes, on the grounds that the electrical conduction through the sensor is not indistinguishable to the transmission of signals through a creepy animal's neurons. Yet, the research on the Biomimetics would lead to development in many such ground breaking innovations.

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