The final part of Digital Electronics, a subject of the Degree in Industrial Electronics and Automation Engineering at the Universitat Politecnica de Valencia (UPV), is given by project-based teaching. In this part, a...
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ISBN:
(纸本)9781665421614
The final part of Digital Electronics, a subject of the Degree in Industrial Electronics and Automation Engineering at the Universitat Politecnica de Valencia (UPV), is given by project-based teaching. In this part, a work has been implemented with the aim of developing the remote control of a robotic vehicle To do this, A vehicle has been designed based on a commercial kit and we have undergone the necessary modifications to control three types of movement (line-following by optical sensors, obstacle avoidance by ultrasonic sensors and remote control by optical sensors) The control is done by programming an ATMega328 microcontroller on the arduino nano platform. In this way, the students must carry out the programs for the microcontroller in order to achieve the best movement control in the three modalities. The final phase consists of a competition among students in each of the three modalities. In this way, it is intended to achieve both students' motivation and effective learning in a pleasant way but also in a competitive environment. This communication describes the teaching approach of the subject, the description of the robotic vehicle, the results obtained at class and the improvements and modifications that are underway.
A huge amount of people suffer or eventually die every day waiting for the rescue vehicle to reach the spot on time. The primary cause for this delay is traffic jams, blockage in streets, inaccessibility of ambulance ...
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ISBN:
(纸本)9781665438018
A huge amount of people suffer or eventually die every day waiting for the rescue vehicle to reach the spot on time. The primary cause for this delay is traffic jams, blockage in streets, inaccessibility of ambulance and so forth. An emergency ambulance drone or UAV (Unmanned Aerial Vehicle) could be a better feasible solution to this problem travel the aerial path and is unaffected by any terrestrial obstacles, as proposed in this paper. The ambulance drone would be controlled by a human sitting in the hospital control room. This would be the quickest possible medical assistance in case of an emergency. The drone would carry medical aid and using the patient's GPS location, which it receives from the mobile application, can reach the spot without any hindrance. Thereafter the drone can start the audio and video streaming of patient's data to the hospitals, medical centers and necessary instructions can be communicated to the nearby spectators or local doctors for using the right equipment (ECG, Pulse Sensor, Oximeter, etc) for patients diagnosis and detect the face with Haar cascade classifier and recognize the face with LBPH algorithm. In this, a comparative study has been done over face recognition between still and video images, the average accuracy of still and video images is 99.4% and 99.34% respectively. Also, for the situation, when doctors are not present in the hospital, an autonomous system has been designed with the help decision tree that can determine the probable cause of the disease by the patient. The secure information transfer is done via lightweight cryptography and Variable MSB - LSB Image steganography.
Water is one of the basic needs of all living beings. Wastage of water is one of the most significant reasons for water shortage around the world. At the household level overflow of water from the overhead tanks may h...
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This paper presents a system to translate gestures from the American Sign Language alphabet using an instrumented wearable glove. This system represents an attempt to utilize a slide potentiometer in sign language tra...
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This paper presents a system to translate gestures from the American Sign Language alphabet using an instrumented wearable glove. This system represents an attempt to utilize a slide potentiometer in sign language translating. The hardware part of the system consists of five slide potentiometers and two force-sensitive resistors, which are best positioned on a glove, based on the analysis of American Sign Language (ASL) letters. In the software part a neural network is used, which was built and trained using Google Colab and Python as the programming language. The performance of the system was tested on three data sets with different numbers of samples. After that, the letters corresponding to the gestures performed are displayed on a computer screen in real time.
In dairy, there is a growing request for laboratory analysis of the main nutrients in milk. High throughput of analysis, low cost, and portability are becoming critical factors to provide the necessary level of contro...
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In dairy, there is a growing request for laboratory analysis of the main nutrients in milk. High throughput of analysis, low cost, and portability are becoming critical factors to provide the necessary level of control in milk collection, processing, and sale. A portable desktop analyzer, including three light-emitting diodes (LEDs) in the visible light region, has been constructed and tested for the determination of fat content in homogenized and raw cow's milk. The method is based on the concentration dependencies of light scattering by milk fat globules at three different wavelengths. Univariate and multivariate models were built and compared. The red channel has shown the best performance in prediction. However, the joint use of all three LED signals led to an improvement in the calibration model. The obtained preliminary results have shown that the developed LED-based technique can be sufficiently accurate for the analysis of milk fat content. The ways of its further development and improvement have been discussed.
Microcantilevers, as a class of micro-electromechanical system (MEMS) sensors, exhibit remarkable sensitivity and are widely applied in environmental, physical, and biological sensing. In this work, we present the dev...
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Microcantilevers, as a class of micro-electromechanical system (MEMS) sensors, exhibit remarkable sensitivity and are widely applied in environmental, physical, and biological sensing. In this work, we present the development of a highly sensitive microcontroller-based microcantilever sensor measurement system, leveraging the advantages of direct digital synthesis (DDS) technology to enable real-time, precise, and repeatable measurements. The system integrates an AD9850 DDS module with an arduino nano V3 to generate and control a 0.5-V amplitude sine wave signal, amplified to approximately 10 V to actuate a piezoelectric element coupled to the microcantilever. The oscillatory response of the microcantilever is detected using a Wheatstone Bridge circuit, followed by signal rectification and digital conversion via the ADS1115 analog-to-digital converter (ADC). By combining hardware and software innovations, including real-time monitoring via Python, the system allows continuous tracking of the microcantilever's resonance frequency, achieving a mass sensitivity of 7.66 pg/Hz, a high signal-to-noise ratio (SNR) of 82.5 dB, and demonstrating good repeatability. Integrating DDS technology with microcontroller-based control significantly advances MEMS sensor design, offering broad potential for diverse sensing applications.
Atrial Fibrillation (AF) is a common cardiac arrhythmia with significant health implications. To evaluate the severity of AF and monitor the effectiveness of treatments, continuous measurement of AF Burden (AFB) is cr...
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ISBN:
(纸本)9798400704147
Atrial Fibrillation (AF) is a common cardiac arrhythmia with significant health implications. To evaluate the severity of AF and monitor the effectiveness of treatments, continuous measurement of AF Burden (AFB) is crucial. This demo showcases a cost-effective, portable, and user-friendly solution for AFB monitoring. Our system integrates the arduino nano 33 BLE sense board with the AD8232 sensor to reliably capture single-lead ECG data. Additionally, a custom algorithm computes real-time AFB, providing insights into the frequency and duration of AF episodes. This system has the potential to enhance AF management and patient care, making cardiac health monitoring more accessible.
Eyes plays a significant role in our everyday life. It is the most significant present for humans. This delightful world is noticeable to us since we are honored with visual perception. But some people unfortunately l...
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ISBN:
(纸本)9781665432726
Eyes plays a significant role in our everyday life. It is the most significant present for humans. This delightful world is noticeable to us since we are honored with visual perception. But some people unfortunately lag this ability to visualize the things. God has gifted them with other ability though helping those to see this world through the improved technology is our humanity. The visually challenged people face many challenges when moving in unfamiliar public places. To provide a smart and sensible navigation to them a smart walking stick can be designed which can be a great potential to them. The legally visually impaired individuals experience difficulty seeing things which others underestimate, similar to street signs, traffic signals, object before them, etc. They are more inclined to falls and different mishaps since they can't clearly discern their surrounding environment. Many individuals with genuine visual disability can travel freely by using a wide scope of tools and techniques. The main portability aid utilized by them is a walking cane or walking stick The traditional walking utilized by the outwardly tested individuals is really inefficient to detect the object in front of the user. Using the stick they can just distinguish the object that is being hit. A walking stick for the outwardly tested individuals utilizing a ultrasonic sensor and buzzer with arduino nano will become extraordinary assistance to them since this sort of walking stick can keep blind individuals from hit by an impediment open to question which can't be recognized by the ordinary walking *** proposed device has many benefits like portable, efficient, low cost, futuristic, low power consumption and many more. The main purpose is to ensure the safety, security and usage convenience of the blind people and give them a device which makes them comfortable to walk.
In 2014, the World Health Organization estimated that 285 million people were visually impaired in the world, 39 million are blind and 246 million have low vision. With the development of technologies, various techniq...
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ISBN:
(纸本)9781665436564
In 2014, the World Health Organization estimated that 285 million people were visually impaired in the world, 39 million are blind and 246 million have low vision. With the development of technologies, various techniques evolved for assisting the visually impaired people. These people need to have such supportive system which will make the things much easier and they don't have to rely on others every now and then. For which various devices has already been invented. But most of them are GPS based which unfortunately prevent them to be effectively and efficiently used in the indoor environment. Our motive is to bring up an idea which can help these people in the indoor environment and make their life much simpler. In our project both the obstacle detection and navigation together are done using the Raspberry Pi 3 camera, the PIR sensor, ultrasonic sensors, so that the obstacles can be detected in real time. For the navigation purpose the ultrasonic sensor has been used and the output is provided by speakers and the vibrator motors and buzzer. For the testing of the system, obstacles are placed in front of the system and it was able to detect the obstacles successfully and without any errors. The Camera was able to detect the predefined objects successfully. The speaker and buzzer motors were able to warn the user about the obstacles. The device includes two vibrator motors that are placed in both the hands that will be navigating the user which way the obstacle is there and which way the user has to move. The vibrators were successfully able to navigate the user.
An IoT and sensor-based water management process is developed for crops like rice, jute, maize, etc which are cultivated in the pre-monsoon season in Bangladesh. Our proposed system is able to supply sufficient water ...
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ISBN:
(纸本)9781665423632
An IoT and sensor-based water management process is developed for crops like rice, jute, maize, etc which are cultivated in the pre-monsoon season in Bangladesh. Our proposed system is able to supply sufficient water in different crop fields optimally. Soil moisture sensors and water level sensors are used to detect adequate water needed for the corresponding crops. A rain sensor and a lightning sensor are used for controlling and protecting the water pump from high voltage levels. Servo motors maintain the entrance of water to the fields by opening and closing the path. arduino UNO and arduino nano are used for controlling and processing data and instructions. Every part of the system communicates with a Wi-Fi module. An Android app is used to add information of a new node for Dijkstra's algorithm. We have applied Dijkstra's algorithm for finding the shortest path for each field. Data of sensors from every field are sent by the Wi-Fi module.
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