Automizer-An Automatic Sanitizer Dispenser

This paper presents the design and development of a low-cost automatic sanitizer dispenser. It is designed in such a way that the overall cost can be reduced without compromising stability. Generally, an automatic sanitizer dispenser uses ultrasonic or infrared sensors for detecting the presence of the hand. The problem with an ultrasonic sensor is that it is costlier than the infrared sensor and requires a microcontroller for its smooth operation. But the problem with the infrared sensor is that its sensitivity varies with the intensity of sunlight. As a solution to the above-stated problem, the conventional design of the infrared sensor is modified such that the transmitter LED emits infrared pulses at a specific frequency and a frequency-specific infrared receiver can be used instead of a photodiode. Since here the receiver will only receive infrared pulse at a specific frequency, the problem caused by sunlight can be overcome. The design of this sanitizer dispenser is done in such a way that it has a flow controller, a level detector, 24 hours battery life, and can be recharged with a mobile charger.