The machine realized by a team of engineering student at ENSAI UNIVERSITY OF NGAOUNDERE which is aimed at solving problems and providing innovative solutions to problems. This Automatic hand washing machine  uses batteries, this technology has been implemented and in use at ENSAI and the University of Ngaoundere. Due to the corona virus outbreak and knowing that the best method to stop the propagation of this virus was through proper hand washing and being pushed by the fact that there existed improper hand washing points around the community which can instead lead to further propagation of this virus. It was then a necessity to put in place a hand washing system which will avoid any contact between the user and the machine thus an automatic hand washing machine is the best solution. This automatic hand washing machine has given a lot of confidence to the user as there is no worry of contamination since there is no contact existing between the user and the machine. This invention is one of the ways in which ENSAI through its students, is using to fight against this Virus.

This automatic hand washing machine exist in three versions that was realized at ENSAI,

VERSION 1.0 : this version has a  capacity of 100liters of water and has in total 100 cycles before it can be refilled, it is meant for indoor use only that is well adapted for offices etc… Next we have Version 1.5 this version has the same technology as that of version 1.0 but this time around it has a capacity of 160liters with 344 hand washing cycles this version uses a proximity sensor to detect the presence of an obstacle which is a human hand. This version is adapted for both indoor and outdoor uses but it can’t resist the rain, from this version we move to the next and most sophisticated version of hand washing machine that we have invented, Version 2.0. This version uses a proximity sensor to detect the presence of a human hand unlike version 1.0 and version 1.5 this version was designed to take 250liters of water and more. All this version has a capacity of 5liters in liquid soap and it delivers 5ml of liquid soap for each cycle giving it a capacity of 1000 cycles in soap before refilling. The 2.0 version is an industrial model and it can adapt to different atmospheric conditions such as rain, sun, excess wind and this model is very mobile due to the caster wheels it has for easy movement from one place to another.

The  Automatic hand washing machine is very simple to use as a matter of fact the programming was done in such a way that all the different version functions the same way that is for user to watch their hands, all you need to do is once in front of the machine, just place your hands 5cm below the soap outlet to get soap, scrub your hands for at least 5seconds and after same action is done to the water outlet to get 300ml of water which runs for 20 seconds. After each user the machine has a temporization of 5 seconds before dictating signals from the next user, this is to implement the aspect of social distancing and to avoid crowding in front of the machine or receiving a user when the previous user is not finished.

Ever since the installation of this hand washing machine since the 1st of June during the school reopening after the corona lockdown.  They are functional on daily basis and during school hours and refilling and necessary maintenance works are been down at the end of each day. This machine been design in a way that will oblige the user to use at least 20seconds in order to properly wash the hands, so far about 70% of the daily user respect the directives and the time allocated of washing hands. According to our statistics we register an average number 534 users on normal days this number varies depending on the population of people registered on campus each day.

With the installation of this automatic hand washing machines, we had several problems especially during its first month of functioning, mainly being the non-respect of hand washing directives by student, the mal handing of the machine by users given the fact that many had not really mastered it functioning   principles as such leading to un expected breakdown which necessitate an immediate  maintenance intervention.