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This project focuses on experimental evaluation and simulator performance for a two-station brushing simulator of current fourth version. Before the simulator released to end user, several testing must be conducted to examine the consistency and reliability of the simulator experimentally. Experiments include speed display, force-based stroke count, counter limit switch and starting speed. Firstly, speed display test compares the DC motor speed display in LCD with tachometer measurement. The force-based stroke count aims in determining the contact between toothbrush and blocks/chamber affects stroke count. The counter limit switch testing aims to test the efficiency of limit switch functioning. Lastly, starting speed testing checks the lowest and maximum DC motor speeds. Three simulator sets were planned: without toothbrushes and blocks, two toothbrushes with no blocks, and with toothbrushes and blocks. The devices used include a tachometer, built in limit switch and DC motor, FSR sensor and a stopwatch. The speed settings for the brushing simulator are 160rpm, 240rpm, 320rpm, 400rpm, and 480rpm as within the DC motor used speed range. The results show accuracy of the speed measured by a tachometer and direct LCD displayed is less than 5% error. Meanwhile for force-based stroke count, the contact between toothbrush and blocks/chamber lessens the number of strokes. Then for counter limit switch testing, result shows increasing the speed produce raises in the stroke number consistently. Final testing gives consistent start-up speed at 160rpm and maximum speed at 480rpm as this testing use specified DC motor attached to the brushing simulator. [ABSTRACT FROM AUTHOR]

Nowadays, screw press technology is more advanced due to a demand by oil palm industry to produce high oil production for consumer daily activity. The objective is to analyze the single and twin worm screw press by comparing several designs to maximize their lifespan of the worm screw press. This study used visual inspection, model development and simulation of worm screw press by using SolidWorks and calculation of design properties. Simulating a single tapered shaft and uniform pitch worm screw press with static and dynamic simulation resulted in the total life span yield of 4085 hours and 3621 hours, respectively. Meanwhile, simulating twin tapered shaft and uniform pitch worm screw press with static and dynamic analysis yielded the total life span of 3262 hours and 1685 hours, respectively. The option for the tapered shaft of screw press or uniform pitch was to be able to lessen the maintenance cost and further lifespan of the screw press. [ABSTRACT FROM AUTHOR]

Upgrading traditional fertigation techniques can attract younger generation to agriculture industries. This project aims to create a new farming system that can be monitored and controlled using an Internet of Things (IoT) platform. Fertigation combines fertilization and irrigation. Water and fertilizer are mixed and fed to the plant via a piping system in fertigation. In irrigation, the roots are precisely watered using a microtube. The fertigation is embed using smart system that operates when triggered based on a specified condition at the farm. These farming systems are automatically controlled by various types of sensors include electrical conductivity (EC) and pH for fertilizer, humidity, and temperature. A microcontroller connects these sensors to the internet network in order to monitor, controlled and storing the database completed IOT platform. It was observed that the EC level for the plant was between 1.0 to 1.2 mS and pH level between 5 to 6.5. The operation can be monitored and overridden either using switch panel or a smartphone which connected to the internet. With the implementation of this system, Malaysia will move closer to Agriculture 4.0. Thus, in future, anticipate in reducing operating costs while increasing yield and production. [ABSTRACT FROM AUTHOR]

Falling is a well-known cause of injured among elderly people. It always acted as a threat toward elder people. Fall detection system is one of the methods for solving the falling issue which occurred in daily life of elder. A model based is essential to identify the behavior of daily life or fall activity. Thus, this study presented a modelling for fall detection system by using neural network algorithm which we had known as nonlinear autoregression, NARnet. The algorithms which will be used in simulated the model are training Levenberg-Marquardt (LM), Scaled Conjugate Gradient (SCG) and Broyden–Fletcher–Goldfarb–Shanno (BFG) function. Four volunteers between 140cm to 170cm height perform eight scenarios. Then, the data set is divided to nine (120LM, 120BFG, 120SCG, 240LM, 240BFG, 240SCG, 1616LM, 1616BFG, and 1616SCG) from 1 to 20 hidden node have been tried and ran in MATLAB. The best model will be selected among nine datasets based on Mean Square Error (MSE) and Regression and evaluated by using decision matric table. From this research, the best model from this research is at 120 data with learning algorithm LM on hidden node 14. [ABSTRACT FROM AUTHOR]

The development of this simulator helps industry and dentist researchers to seek for plaque removal on the tooth. However, in toothbrush industry or any manufacturing department there are a bulky and massive machine with high cost and more suitable in industrial-level applications. Thus, for specific dental research, it is essential to develop the brushing simulator with a single brushing station that are simple, easy to operate and with a reasonable cost. In this study, two-dimensional motion of a brushing simulator with a single brushing station is investigated. The brushing simulator developed has five motion which is horizontal-vertical motion, elliptical motion, circular motion, inclined to the right motion, and zig-zag vertically and horizontally motion. From the result that will be observed, what is the relationship between those three parameters which are pressure (proportional to force applied), speed, and time taken. When the pressure given by the force higher, the time taken to brushing is longer. Higher speed gives faster time in all motions as it can overcome all of surface resistance. [ABSTRACT FROM AUTHOR]