Inovativan način blokade rada motorne testere korišćenjem sistema za detekciju alkohola

Abstract

U radu je prikazan princip rada senzora za alkohol, koji je povezan sa prekidačem za uključivanje/isključivanje na motornoj testeri. Senzor za alkohol isključuje rad motorne testere preko predajnika i prijemnika, ukoliko "na dah" detektuje da je radnik pod dejstom alkohola. Veza između predajnika i prijemnika je daljinska, ostvarena preko radio talasa. Senzor za alkohol sadrži mrežicu koja se pod naponom od 5V zagreva i reaguje na alkoholna isparenja. Ta reakcija je pobuda za slanje signala od predajnika do prijemnika. Blokada rada odnosno isključenje motorne testere se dešava kada se napravi kratak spoj između napajanja i mase. Ovaj kratak spoj se dešava i kada se prekidač za stopiranje rada motorne testere prebaci manuelno u stanje "0". Primenom senzora za alkohol, predajnika i prijemnika, stanje "0" na prekidaču se ostvaruje bežično, tako što prijemnik (rele) umesto prekidača napravi kratak spoj koji uzrokuje prekid rada motorne testere. Ovakav način prekida rada motorne testere posredno štiti radnika od povreda uzrokovanih konzumiranjem alkohola.

The paper presents the working principle of the alcohol sensor, which is connected to the on/off switch on the chainsaw. The alcohol sensor switches off the chainsaw via the transmitter and receiver, if it detects that the worker is under the influence of alcohol. The connection between the transmitter and the receiver is remote, via radio waves. The alcohol sensor contains a mesh that heats up due to 5V voltage impact and reacts to alcohol vapors. This reaction is an incentive to send a signal from the transmitter to the receiver. Blockage - switching off of the chainsaw occurs when a short circuit is made between the power supply and ground. This short circuit also occurs when the chainsaw stop switch is manually switched to the "0" state. By using an alcohol sensor, a transmitter and a receiver, the "0" state on the switch is achieved wirelessly. The receiver (relay) makes a short circuit instead of a switch, which causes the chainsaw to stop working. This way of stopping the chainsaw indirectly protects the worker from injuries due to alcohol consumption.