Pengembangan Sistem Instrumentasi Kendaraan Listrik Skala Prototype Berpenggerak Motor BLDC

The prototype type electric car is a car that is designed for an energy-efficient car competition that highlights efficiency in both transmission, design and drive systems. In the test of energy efficiency in the consumption by the motor on the electric car is done using a manual measuring instrument in the form of multimeter and tachometer with the installation of complex tools and value readings that can not be reached by the steering, need of tools that can measure in realtime with the view integrated. In the development of instrumentation tool is used to measure the voltage, current and speed. Measurements are done using a voltage sensor in the form of a resistor divider and ACS712 as a current sensor placed on the source of energy and load. Speed measurements using A3144 magnetic sensor which is placed adjacent to the wheel spokes mounted neodymium magnet. Measurement of sensors in though via arduino nano. In the initial state the tool will measure the voltage, current and rpm. When the electric car runs in get parameter value measurement of travel time, energy consumption, percentage of battery, torque, current, voltage and speed. The final measurement results will be obtained in the time taken, the distance running, the estimated distance running can still be reached, the total power consumption, average speed and percentage of battery. The measurement results are compared with precise measuring instruments to find out how much the measurement error value . The measurement parameters are displayed via 20x4 LCD. In this research resulted in the precision of the instrument with the highest difference 0.6 volts on the voltage sensor, 1.83 amps on the current sensor and 94 rpm at the speed sensor