Sorting Device Coding Print Quality Machine on Packing Box Prototype Utilizing Optical Character Recognition

The design of a system that can recognize the characters printed by the coding machine so that it can then determine the assessment of very good and bad prints, is the goal of this research. This system is useful as an indicator of an indication of a problem with the coding machine which is indicated by the number of products rejected by the system. In addition, this system is an effort to reduce printing errors so that they are sorted and do not pass to the market, thus causing misinformation to the public. This system is in the form of a moving conveyor table that has a firing area box and a reject rod as a product separator. The OCR method is programmed in a computer that is part of the system, to be able to recognize the characters printed by this coding machine. USB to TTL which functions as serial communication from the Laptop to the Microcontroller, is a complement to this tool. Testing as many as 60 times on 12 types of characters, this system has been carried out on this tool. There are six types of good characters and six types of bad characters, which have been provided. Of the 60 tests, the results were four failed tests. That is, the percentage of success of this tool is 93.33%, and the percentage of error is 6.66%.

The PRESSURE AND TEMPERATURE MONITORING SYSTEM OF ROCKET MOTORCYCLE COMBUSTION BASED ON RASPBERRY PI 4.0

– Rockets have an important role in today's era because they really help the activities carried out by the Indonesian National Army in order to maintain the integrity of the Unitary Republic of Indonesia. Raspberry pi 4.0 has several advantages and 2 functions, namely as a microprocessor and microcontroller. The monitoring system for the pressure and temperature of the rocket motor combustion chamber is made in such a way by using the red node software so that it can find out real-time data on the pressure and temperature of the resulting rocket motor combustion chamber. The pressure and temperature monitoring system of the rocket motor combustion chamber is equipped with a pressure transducer sensor, temperature sensor and load cell as the rocket load will be maximized by 1 ton. Control data generated from the pressure and temperature of the motor combustion chamber is sent to the raspberry pi via serial communication. This research was conducted based on pure experiments.

On-Orbit Implementation of Discrete Isolation Schemes for Improved Reliability of Serial Communication Buses

Serial communication buses are used in electronic systems to interconnect sensors and other devices, but two of the most widely used protocols, I²C and SPI, are vulnerable to bus-wide failures if even one device on the bus malfunctions. For aerospace applications demanding increasingly more distributed processing and sensing capability, the compounding risk to system reliability as device count scales becomes a limiting factor in mission scope, performance, and lifetime. We propose a simple external circuit to be added to each node on a communication bus that automatically isolates the node in the event of device failure. By automatically isolating failed devices, the integrity of the bus is preserved without requiring additional signals or processing overhead from the host controller. In this article, I²C and SPI isolation circuits are simulated, fabricated, and experimentally verified to be effective at preserving bus integrity in the event of peripheral device failure. Generalized reusable circuit blocks were designed and integrated into three spacecraft systems for the successful NASA V-R3x mission deployed in January 2021. The addition of serial bus isolation significantly improved system reliability for the V-R3x mission by eliminating single-point failure modes of the I²C and SPI buses interconnecting sensors and radios necessary for mission success. The developed protection schemes are a new tool for decoupling system reliability from serial bus device count and can readily be integrated into existing aerospace systems.

Sistem Kendali dan Monitoring Cairan Infus pada Proses Tatalaksana Dehidrasi Berbasis IoT

Diarrhea is an endemic disease with Potential Extraordinary Events (PEE), often accompanied by death in Indonesia. Globally, at least diarrheal disease has caused 525,000 deaths in children each year, with the most severe threat being dehydration. It takes a system that can determine the degree of dehydration and manage dehydration quickly and appropriately to reduce the mortality rate. This study created a system to assess the degree of dehydration and perform the dehydration management process automatically. The method of determining the degree of dehydration using heart rate parameters and the process of justification is measured physical condition. In the process of dehydration management, intravenous fluid administration is carried out automatically using servo motors. To improve safety in infusion users, infusion volume, flow obstruction, air bubble, and rising blood detection are also carried out. All results will be processed on the microcontroller and will be sent to the ESP32 via serial communication. The data processing results will be connected using the Internet of Things so medical personnel can monitor via the website. The results showed that the average error of heart rate measurement using the moving average method of 0.41%, and the accuracy value in the infusion control system reached 90%.

MATLAB BASED HIL FRAMEWORK: A GUIDE TO BUILD A HARDWARE IN THE LOOP DAQ PERIPHERAL

Testing and validating modern hardware such as some subsystems in modern vehicles is a little challenging especially before assembling them into the final product. To achieve a valid real-time test, the tested hardware or unit must be placed into its real-time environment which is not possible in some cases. Recently, and with the presence of advanced simulation software applications, the hardware environment could be simulated easily to fulfill the real-time test properly. Simulating an environment in one loop with real physical hardware knowing as Hardware-in-the-loop is used nowadays in various development fields, medical, industrial, research, and education. Amongst the aforementioned, HIL is widely used in control systems applications. In the paper, building a framework to enable hardware in the loop (HIL) simulation with the aid of MATLAB/Simulink is discussed. Over serial communication, and inexpensive data acquisition (DAQ) peripheral has been developed using a microcontroller unit. the development of the framework is discussed to be used as a guide for building it by using any microcontroller. The resultant performance appeal to excellent real-time response with quite a small delay of about 70ms in the worst case.

White Light Communication: A Design for High School Experiment

As wireless communication carrier frequencies continually increase to respond to growing bandwidth demands, from hundreds of MHz (3G/4G) to dozens of GHz (5G), it would only be logical to postulate that the next step in this technological revolution would be to move to hundreds of THz, also known as visible light. This completely alleviates the carrier frequency induced bandwidth limitations while serving as ambient lighting. In this paper, a visible light communication setup capable of moderate bitrate serial communication with interference from ambient lighting will be presented. Furthermore, this paper proposes the implementation of a similar setup as a form of hands-on experiential learning for high school and undergraduate engineering students.