Communication in Electronic Visualization Assistant Using UART, RS485 Amplifier, and MUX

• Main Author: Jeffrey Alamaro Maxi, Dominique
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/43574
• Institution: Institut Teknologi Bandung

Electrical Visualization Assistant is a system that supposed to help excavator’s operator in operating excavator for enhancing visibility operator. The system helps operator by giving warning if the arms entering dangerous area. The dangerous area is area that is dangerous for environment around excavator, dangerous for excavator because possibly breake excavator and as a result, increasing risk of crash. The system also helps operator by displaying arm, boom, and bucket of the excavator. Features displayed are arm, boom, and bucket of excavator, relative excavator’s direction to the initial direction. This method used to give information about feature’s condition which are angle of boom, arm, and bucket and angle to the initial condition. Electronic Visualization Assistant is a project supposed to help excavator operator in operating excavator. The project will help the operator by providing warning if the arm of excavator entering dangerous area. The dangerous area is the area considered dangerous for the environment arround excavator, dangerous for the excavator because it posibly ruins excavator stability and in result, and adding risk of crash. This project also will help the operator by displaying the current condition of the excavator. The displayed features are arm, boom, and bucket of the excavator, the direction of the excavator relative with the initial direction when the Electronic Visualization Assistant is turned on. The method used for sensing the condition of the featured stated is sensing angle of the features (except the main body direction) to the level of ground and sensing the angle to the initial condition when the project is turned on. The data retrieved is supposed to be processed to be ready to be displayed in the display inside the main cabin of the excavator. Electronic Visualization Assistant consists of 3 subsystems, sensoric subsystem, main controller subsystem, and displaying subsystem. Sensoric subsystem is the subsystem that retrieves the data from the physic condition of the features, communication subsystem is the subsystem that sends the data retrieved to the main controller subsystem, the main controller is the subsystem that proceeds the data to the display subsytem. And display subsystem is the subsystem that displays the data to the operator. This paper will explain about the communication subsystem. The input of the subsystem is the output of the previous subsystem, that is sensoric subsystem. The product has 4 sensoric subsystem. The output of the sensoric subsystem is a number from 0 to 360 with resolution of 0.01. The number is the angle retrieve by the sensoric subsystem. Communication subsystem will send the numbers to the main subsystem that is located at various distance from the sensoric subsystem. It is caused by the sensoric subsystems are placed on different parts of the excavator and the main controller subsystem that is located at the main cabin. The longest distance is 10 meter, that is the distance between sensoric subsystem on bucket and the main controller in the main cabin. The communication subsystem also enables one main controller to be able to receive the data from 4 sensoric subsystems.Keywords— data preparation, UART protocol, RS485, MUX, Counter, Clock