![]() It is controlled by the microcontroller which is connected to it. The required level of fuel which we told over the microphone is displayed on the LCD display unit. Voice signal plays an important role in the opening and closing time mechanism of output valve circuit. The voice signal processing circuit is used to detect the voice signal of user. Then voice signal will be sent to the micro controller unit, which controls the output valve circuit. It is connected to voice signal-processing circuit which analyzes the frequency range of incoming voice. The incoming sound energy will be converted in to electrical energy by the microphone. ![]() The user of the system will tell his fuel requirement like 1 liter, 3 liter etc to the micro controller through microphone. ![]() User’s voice signal over the microphone plays important role in the working of this project. The hardware requirements of this proposed project are given below: This project is good idea for Mechanical and automobile engineering students. ![]() This project is user-friendly and easy to use. The project Voice Operated Fuel Injector is developed for injecting fuel to the users vehicle by voice signal of the user is called Voice Operated Fuel Injector System.
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