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PROCEDURES AND PROCEDURES FOR OBTAINING PATENT RIGHTS FOR ULTRASONIC WAIST INVENTION AS A TUNANETRA ASSISTANCE TOOL

Abstract

There have been many mobility tools created for blind people as users, but few have more complex functions in detecting objects or obstacles both in front of and beside users when doing their mobility. This is because the sensor has not been applied as an object detector in a more optimum distance and range, and has not been developed in a more efficient and more fashionable manner for users. output design in the form of vibration and sound with a range of 3 cm to 3 m. From the measurement results it was found that the output voltage of the PING and SRF05 sensors was directly proportional to the increase in the detection distance of the object and the two sensors requiring a reflection time of 74 ms and 91 ms for a distance of 10 cm, respectively.

Ultrasonic Sensor Ultrasonic waves are acoustic waves that have frequencies ranging from 20 kHz to around 20 MHz. The working frequency used in ultrasonic waves varies depending on the medium being passed, starting from the low density of the gas phase, mathematically the distance can be calculated as follows:

S=v.t Where s is the distance in a meter, v is the speed of sound which is 344 m / sec and t is the travel time in seconds. When an ultrasonic wave hits a barrier then the wave will be reflected partly absorbed and some of the others will continue. An ultrasonic sensor is a sensor that converts physical quantities (sounds) into electrical quantities. In this sensor ultrasonic waves are generated through an object called piezoelectronics. Piezoelectronics will produce ultrasonic waves with a frequency of 40 kHz when an oscillator is applied to the object.

Keywords: Cash Receipts and Expenditures

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