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Triwiyanto Triwiyanto

Triwiyanto Triwiyanto
Health Polytechnic Ministry of Health Surabaya Indonesia · Electromedical Engineering

Associate Professor PhD (IEEE Member)

About

65
Publications
9,543
Reads
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264
Citations
Citations since 2016
65 Research Items
264 Citations
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Introduction
My current research on biomedical signal processing, Muscle fatigue analysis using electromyography, Joint angle estimation using electromyography, and Upper limb exoskeleton

Publications

Publications (65)
Article
The electrocardiogram (ECG) of the human body is an important basis in heart function as well as the diagnosis of cardiovascular diseases, which has a very vital role in clinical diagnosis. Obtaining high-quality ECG signals with a portable remote ECG acquisition system is a big challenge given limited resources. According to the World Health Organ...
Article
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The heart sound produced in some cases of the disease shows a certain pattern. The purpose of this study was to design an electronic stethoscope for cardiac auscultation with the following display. The contribution in this study is being able to show certain patterns that can be diagnosed in the sound signal. So that the pattern can be known when t...
Article
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The measurement of the operating lamp light on the operating table is very necessary so that the light rays do not glare during surgery and pathological conditions can be recognized easily without any shadows. This study aims to design a tool to measure light intensity equipped with automatic distance measurement. The design of this tool uses an ul...
Article
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COVID-19 (coronavirus disease) is an acute respiratory illness induced by exposure to coronavirus 2 in 2019 (SARS-CoV-2). WHO confirms that there were 1.8 million registered deaths in 2020 and that there were 3.5 million recorded deaths in 2021. People who are infected with SARS-CoV-2 without symptoms should have a pulse oximeter. Early detection o...
Article
Physical activity is an activity of body movement by utilizing skeletal muscles that is carried out daily. One form of physical activity is an exercise that aims to improve health and fitness. Parameters related to health and fitness are heart and muscle activity. Strong and prolonged muscle contractions result in muscle fatigue. To measure muscle...
Conference Paper
Hub motor technology has piqued researchers' interest in now a days on account of the multiple benefits it provides. Nevertheless, because the straight connection of the hub motor to the wheels can upshot in developing the vehicle's unsprung weight, this increase in unsprung weight has become one of the important studies in the field of electric ve...
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Heart disease is a very dangerous disease. Even today in Indonesia the disease ranks first as a cause of death. The purpose of this study is to design ECG, PCG, and Carotid Pulse on a computer with Delphi programming. The contribution of this research is that the carotid signal can be displayed on a personal computer monitor so that it can be viewe...
Chapter
Every material has its characteristics, if we want to know its characteristics, we usually do mechanical testing. Mechanical testing is usually a destructive test. The purpose of this research is to measure the pressure wave of clay conditioned with the help of an ultrasonic signal. The contribution of this research is to propose a method of measur...
Chapter
Generally, upper limb exoskeletons are controlled using the EMG signal; however, the EMG signal is influenced by the position of the electrodes, as well as muscle fatigue. Therefore, another alternative to control the upper limb exoskeleton is required. The purpose of this study is to develop an upper limb exoskeleton based on voice control using e...
Chapter
The COVID 2019 outbreak has been designated by WHO as a pandemic since 2020. Various methods of diagnosis of COVID 19 have been developed by several researchers to cope with COVID 19. A proper and accurate diagnosis is crucial for the next treatment step. Deep learning has been widely applied in the image classification process with high accuracy....
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Heart rate is an important indicator in the health sector that can be used as an effective and rapid evaluation to determine the health status of the body. Motion or noise artifacts, power line interference, low amplitude PPG, and signal noise are all issues that might arise when measuring heart rate. This study aims to develop a digital filter tha...
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Examination of the respiratory rate is included in the calculation of vital sign parameters used by the medical team to determine whether a person's condition is good or not. Researchers want to develop a method of checking the respiratory rate that is easy to use by the general public and can display fast and precise results. During this pandemic,...
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BACKGROUND: In today’s digital era, the development of technology and information is so fast not only in the world of medicine and medical equipment but also in the model of health services so that many e-services are found, such as Alodokter and Halodoc. As well Internet of Things (IoT)-based technology IoT makes the method that can be used for re...
Article
EMG signal has a random and stochastic characteristics, so it is difficult to predict the amplitude. Furthermore, the EMG signal depends on the electrodes location. Therefore, a proper muscle selection determines the system's accuracy value. The purpose of this study was to investigate the exact location of the electrodes to improve the accuracy of...
Article
The choice of using speech to control the exoskeleton is based on the number of exoskeletons that are controlled using the EMG signal, where the EMG signal itself has the weakness of the complexity of the signal which is influenced by the position of the electrodes, as well as muscle fatigue. The purpose of this research is to develop an exoskeleto...
Article
Premature babies born before 38 weeks have a high risk of dying, requiring urgent care. Premature babies receiving intensive care in incubators need certain temperature, humidity, and a quiet room. In addition, the baby should also be ensured that his body temperature remains normal during the treatment period. Based on the condition of these vulne...
Article
The consequence of spinal cord injury (SCI) is the malfunction of some parts of the body. This observation especially applies to trauma at the cervical level, because both patients' hands and legs are no longer functioning. The purpose of this study was to determine the mechanism of the comparator treshold system in electric wheelchairs for patient...
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High accuracy and a real-time system are priorities in the development of a prosthetic hand. This study aimed to develop and evaluate a real-time embedded time-domain feature extraction and machine learning on a system on chip (SoC) Raspberry platform using a multi-thread algorithm to operate a prosthetic hand device. The contribution of this study...
Chapter
Electromyography (EMG) signals have very high complexity and random characteristics. EMG signals are widely used in the process of controlling rehabilitation engineering devices. Exploration of the right feature extraction must be carried out to produce a good classifier model accuracy. However, this requires a fairly long time consumption. Recentl...
Article
The target for this community service program is a resident of Jl. Parikesit RT 05 RW 03 Dusun Picis, Balongdowo Village, Candi District, Sidoarjo Regency. He had a work accident in one of the industries in the city of Sidoarjo in 2010 on the left wrist up to the fingers, so the doctor suggested amputation. He is actually still in his productive ag...
Article
Human limb amputation can be caused due to congenital disabilities, accidents, and certain diseases. Amputation caused by occupational accidents is a frequent occurrence in developing countries. Meanwhile, amputation caused by certain diseases such as diabetes Miletus is also the leading cause. The need for prosthetic hand is increasing along with...
Article
People with disabilities find it difficult to operate wheelchairs especially those with disabilities who do not have hands and feet or are disabled. The aim of this research is to improve safety control for electric wheelchairs by detecting obstacles and detecting areas that minimize collisions against obstacles. The contribution of this research i...
Article
The increasing need for prosthetic hands for people with disabilities is one reason for innovation in the field of prosthetic hands to create the best prosthetic hand technology. In the design of EMG-based prosthetic hands, this is determined by several things, among others, the selection of features. The selection of the right features will determ...
Article
A rehabilitation device for a post-stroke is essential because stroke attacks can cause disable to part or half of the human body. An exoskeleton could be a vital device for rehabilitation for a post-stroke patient. Several studies have proposed the exoskeleton design for rehabilitation purposes to a human limb disorder. This study aims to review t...
Article
The paralysis that occurs in the human limbs can be caused by strokes, injuries, age problems, and ligament damage. The purpose of this study is to design a hand exoskeleton as rehabilitation in patients who have had a stroke in hand. The contribution of this research is to design a hand exoskeleton with a control system to control mechanical movem...
Book
This Conference proceeding presents high-quality peer-reviewed papers from the International Conference on Electronics, Biomedical Engineering, and Health Informatics (ICEBEHI) 2020 held at Surabaya, Indonesia. The contents are broadly divided into three parts: (i) Electronics, (ii) Biomedical Engineering, and (iii) Health Informatics. The major fo...
Article
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a name="_Hlk561743"> Some physical parameters influence the electromyography signal (EMG). when the EMG signal is used to estimate the position of the elbow. An adaptable feature was important to reduce a variation on the parameters. The aim of this paper is to estimate the joint position of the elbow using EMG signal based on a dynamic function. T...
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High accuracy in pattern recognition based on electromyography (EMG) contributes to the effectiveness of prosthetics hand development. This study aimed to improve performance and simplify the deep learning pre-processing based on the convolution neural network (CNN) algorithm for classifying ten hand motion from two raw EMG signals. The main contri...
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Body temperature and heart rate monitoring based on telemedicine is an electromedical device served to determine the condition of the heart rate per minute (BPM) and the patient’s body temperature in realtime remotely. The purpose of this study is to design the heart rate and body temperature monitor based on telemedicine uses the Internet of Thing...
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Monitoring the heart activity is critical for a patient with heart disease. Twenty-hour detecting of the ECG signal will help the clinician to diagnose the hearth. This device is usually called a Holter monitor. However, the price of this device is very expensive, therefore the development of a Holter is required. The purpose of this study is to de...
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Generally, the reporting and recording a nutrition status of infants and baby, which conducted at the Posyandu, is still using the manual system. The problem in the manual system is that the local Health Office cannot monitor the status of infants at the Posyandu. Therefore to support government programs, especially in maternal and child health, an...
Article
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A prosthetic hand is an artificial device that resembles a human hand which can help the human with a physical disability. Previously, the development of a prosthetic hand is designed in various method, from passive to bionic. Electrooculography (EOG) is a technique for measuring potential differences between the front (positive pole formed by the...
Article
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Heart rate and body temperature can be used to determine the vital signs of humans. Heart rate and body temperature are two important parameters used by paramedics to determine the physical health condition and mental condition of a person. Because if your heart rate or body temperature is not normal then you need to make further efforts to avoid t...
Article
Force gauge is an instrument used to measure the force on the traction unit. The purpose of this study is made a force gauge meter which used during traction operation. The main component of this force gauge meter is Atmega 328, HX711 module and Loadcell type S sensor. The mikrokontroller Atmega 328 is the main board. Loadcell type S used to detect...
Conference Paper
Full-text available
Available prosthetics hand is expensive and beyond the ability to buy for the amputee, especially in the developing country. The designing a low-cost prosthetics hand is very important because it can be fabricated with a minimum cost. Therefore, this study aims to design an anthropomorphic prosthetics hand with a low cost and open source to the pub...
Article
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The essential problem in the development of a prosthetic hand based on electromyography (EMG) signal is the choice of the features and number of muscles that will be used to recognize the hand motion. A minimal number of feature and channel could reduce the cost in the development of the prosthetic hand and processing time. Therefore, it is importa...
Article
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Recently, the internet of thing (IOT) has been growing rapidly in many fields including in the biomedical vital sign monitoring of a human. Heart rate and SPO2 are vital sign parameters for human life. Those parameters needed to be observed for patients in an emergency situation. In patient care at hospitals, doctors need to monitor the patients’ h...
Article
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Patient monitor is an apparatus used to monitor the patient's condition in real-time, hence the patient's physiological conditions can be identified at that time. The purpose of this study is to design a patient monitor for SpO2 and temperature parameters based on computer with Delphi progaming. In this work, the author developed patient monitor wi...
Article
Respiratory rate is the total number of breath or breathing cycle, which occurs every minute. Abnormal respiratory rate is a sensitive indicator for danger patients requiring medical treatment immediately. The objective of the study is to design respiration rate monitor via Anroid mobile phone. In this study, we used flex sensors to detect the resp...
Article
Full-text available
In the digital signal processing, the windowing technique is essential in the feature extraction process because it influences the performance of the proposed models. The objective of this study is to evaluate the performance of the windowing technique in the elbow joint angle estimation based on electromyography (EMG) signal. In the elbow joint an...
Article
The purpose of this study is to develop and evaluate an adaptive feature to compensate the effect of muscle fatigue in the elbow joint angle estimation. In the experiment protocol, subjects are asked to move the elbow in flexion and extension for 15 min. The electromyography (EMG) signal collected from biceps was extracted using the Wilson amplitud...
Conference Paper
Full-text available
High performance in the elbow joint angle estimation, using electromyography (EMG) signal, is essential in the devices which uses EMG as a control signal. The purpose of this study is to evaluate Kalman filter performance which is used to improve the linearity of the elbow joint angle estimation. The EMG signal is recorded from biceps muscle while...
Conference Paper
Ischemic stroke is one of the stroke types that commonly occur in people with stroke. This is usually followed by symptoms such as weakness or paralyzed limb. The purpose of this study is to train the stroke patient independently using a robotic exoskeleton based on electromyography (EMG) signal. This study was an experimental research with a compa...
Article
Full-text available
Muscle fatigue is a major problem in the study based on electromyography (EMG) signal. When the muscle in the fatigue condition, the power of the EMG signal increases significantly. This phenomenon can be a problem in the elbow-joint angle estimation. The purpose of this study is to develop a method in order to compensate the effect of the muscle f...
Article
Full-text available
Electromyography (EMG) has widely used in the field of biomedical engineering as a control signal for prosthetic devices and exoskeleton robotic. High accuracy in the prediction of the limb joint is very important to determine the effectiveness of the system. In this study, we propose a new algorithm to improve the elbow joint angle prediction base...
Article
Full-text available
A noisy environment is a major problem which has to be resolved to get a good performance in the estimation. A robust feature is important in order to obtain an accurate position of the elbow joint from the electromyography (EMG) signal. The objective of this research is to modify and assess the time domain features which robust against the white G...
Article
Full-text available
High accuracy in joint angle prediction is very important in the development of devices based on myoelectric control. Joint angle prediction based on a non-pattern recognition method is more preferred due to the robustness and the easiness to adapt to any subject. This paper proposed a new method to predict an elbow joint angle based on electromyog...
Article
Full-text available
In literature, it is well established that feature extraction and pattern classification algorithms play essential roles in accurate estimation of the elbow joint angle. The problem with these algorithms, however, is that they require a learning stage to recognize the pattern as well as capture the variability associated with every subject when est...
Article
Full-text available
Studying muscle fatigue plays an important role in preventing the risks associated with musculoskeletal disorders. The effect of elbow-joint angle on time-frequency parameters during a repetitive motion provides valuable information in finding the most accurate position of the angle causing muscle fatigue. Therefore, the purpose of this study is to...
Article
Full-text available
The high performance of the elbow joint angle prediction is essential on the development of the devices based on electromyography (EMG) control. The performance of the prediction depends on the feature of extraction parameters such as window length. In this paper, we evaluated the effect of the window length on the performance of the elbow-joint an...
Conference Paper
Fatigue is a state that the muscle could not able to maintain the contraction. Electromyography signals can be used to determine the state of muscle fatigue. Quantization of muscle fatigue needs to be defined clearly so that it can be used as an indicator or a compensator in the control system. Electromyography signal which is produced during dynam...
Conference Paper
Full-text available
Feature extraction is an important part in the classifier systems. In this study, feature extraction was used to extract the information of the surface electromyography (sEMG) and to predict upper limb elbow joint angle. To predict the upper limb elbow joint angle, we explored the EMG signal characteristics on biceps, triceps lateral head and trice...