Smart Healthcare Security Device on Medical IoT Using Raspberry Pi

This paper aims to improve the protection of two-wheelers. This study is divided into two parts: a helmet unit and a vehicle unit. The primary unit is the helmet unit, which contains a sensor, and the second part is known as the alcohol sensor, which is used to determine whether or not the driver is wearing the user helmet correctly. This data is then transmitted to the vehicle unit via the RF transmitter. The data is encoded with the aid of an encoder. Suppose the alcohol sensor senses that the driver is intoxicated. In that case, the IoT-based Raspberry Pi micro-controller passes the data to the vehicle unit via the RF transmitter, which immediately stops the vehicle from using the Driver circuit to control the relay. To stop the consumption of alcohol, the vehicles would be tracked daily. If the individual driving the vehicle is under the influence of alcohol while driving, the buzzer will automatically trigger. The vehicle key will be switched off.

Development of Wireless Technique to Regulate Seed Dropping in a Seeder for Intercropping

Although intercropping gives additional yield per unit area than sole cropping, yield may also decrease as the crops differ in their competitive abilities. To avoid competition and to accompany complimentary action between the base crop and inter crop in intercropping practise, proper crop ratio of two crops should be maintained. When sowing with available seeders crop ratio was not maintained because of non-availability of a seed hopper, handling two different varieties of seeds and the un controlled seed flow from the hopper to the seed tube when ground wheel is rotating. To look after this problem an experiment was conducted at DFMPE, AEC & RI, Tamil Nadu Agricultural University, Kumulur by fabricating a seed hopper consisting of two compartments and circular shaped outlet for two variety of seeds and developing an RF (radio frequency) wireless technology to control servo motor in order to restrict the seed drop from seed hopper to the seed tube even though ground wheel is in running condition. In this paper considering a seven-row seeder, the performance of a micro controller coded with appropriate programme in embedded C language which can regulate seven servo motors each at seven seed hoppers, functioning of RF transmitter sketch, functioning of RF receiver sketch, header issue & its solution, angle conversion of servo shaft and power consumption was observed and discussed. Total power required for operating RF electronic setup containing seven servomotors was recorded as 5 V 12 A. The angle of rotation of servo motor shaft was from 0º to 165º when pulse width range in micro controller was set from 0 and 2400 micro seconds. The servo did not respond in the hardware interfacing because both the libraries use timer 1 interrupt which created an error issue. In order to overcome that “Servo timer 2.h” header was issued instead of servo.h. Then sketch was compiled and was executed successfully.

The investigation of natural-rubber for improving self-powered heat detector based on thermoelectric generators

Fire hazard has destroyed humanity creations. Fire detectors have been developed by using different techniques. Thermoelectric generator (TEG) is a part of energy harvesting which is able to convert heat into electricity because of temperature difference between hot and cold side of thermoelectric device (TE). Different materials are used for thermoelectric generators which depend on the characteristics of the heat source, heat sink and the design of the thermoelectric generator. Many thermoelectric generator materials are currently undergoing research. This paper presented an investigation of seeking an alternative way of detecting fire hazard by developing architecture prototype of a fire detection technique using natural rubber. The thermoelectric prototype used self-powered device which improved the temperature difference gap and stabilized the cold side of TE alongside natural rubber as the cooling material. The technique is relatively simple system realization based on three viable components, i.e. a heat sensor, a low-power RF-transmitter and a RF-receiver. The heat sensor is designed and fabricated by thermoelectric and heat sink with natural rubber (NR) coating. The NR coating is heat absorption reduction. Therefore, the temperature difference is wildly resulting in the higher TE output voltage. The voltage is also supplied to the low-power RF transmitter module. In case of fire hazard, the temperature increases from 26 to 100 °C , the prototype can operate successfully. This technique will solve potentially the power supply issue in fluctuated situations. The rubber coating from rubber trees in Thailand would be a value chain added for bio-economy, supporting a sustainable development goal of the country

The Development of a High Performance Digital RF Transmitter for NMR

<p>This Master’s thesis consists of the development of a Nuclear Magnetic Resonance (NMR) Radio Frequency (RF) transmitter, which is a core electronic subsystem of an NMR system. The main purpose of this research is to contribute to the application of NMR, which is a new sensing technology that has yet to be fully implemented into the everyday world. One of the barriers to adopting this technology is its complexity. However, the invention of high speed digital FPGAs (Field Programmable Gate Array) such as the Spartan series has made it easier to develop high performance NMR systems over recent years. The major contribution to this research is the development of faster digital signal processing hardware, and methodologies that have been implemented on a single chip. This has reduced the size and the cost of the electronic subsystem and contributed towards the evolution of NMR as a general tool. This thesis introduces the concept of implementing a high-speed NMR RF multi-frequency transmitter by using multiple Direct Digital Synthesis (DDS) cores to generate sine-waves, which range from 100 kHz to 750 MHz. The research required three stages to be achieved, beginning with conceptual design of a high-speed transmitter using MATLAB-Simulink, RTL-level (Register-Transfer Level) simulation and hardware implementation, which included hardware testing on a prototype board. This Master’s research is to seek a solution to building a multi-core DDS module in an FPGA device. In other words, the research work focuses on finding an alternative solution to constructing a DDS system. The project involves building up the VHSIC Hardware Description Language (VHDL) program to work beyond the hardware limitation of an FPGA device. Hence, the final solution does not consider any noise impact due to the structure of the developed system.</p>

The Development of a High Performance Digital RF Transmitter for NMR

<p>This Master’s thesis consists of the development of a Nuclear Magnetic Resonance (NMR) Radio Frequency (RF) transmitter, which is a core electronic subsystem of an NMR system. The main purpose of this research is to contribute to the application of NMR, which is a new sensing technology that has yet to be fully implemented into the everyday world. One of the barriers to adopting this technology is its complexity. However, the invention of high speed digital FPGAs (Field Programmable Gate Array) such as the Spartan series has made it easier to develop high performance NMR systems over recent years. The major contribution to this research is the development of faster digital signal processing hardware, and methodologies that have been implemented on a single chip. This has reduced the size and the cost of the electronic subsystem and contributed towards the evolution of NMR as a general tool. This thesis introduces the concept of implementing a high-speed NMR RF multi-frequency transmitter by using multiple Direct Digital Synthesis (DDS) cores to generate sine-waves, which range from 100 kHz to 750 MHz. The research required three stages to be achieved, beginning with conceptual design of a high-speed transmitter using MATLAB-Simulink, RTL-level (Register-Transfer Level) simulation and hardware implementation, which included hardware testing on a prototype board. This Master’s research is to seek a solution to building a multi-core DDS module in an FPGA device. In other words, the research work focuses on finding an alternative solution to constructing a DDS system. The project involves building up the VHSIC Hardware Description Language (VHDL) program to work beyond the hardware limitation of an FPGA device. Hence, the final solution does not consider any noise impact due to the structure of the developed system.</p>

UWB fastly-tunable 0.5-50 GHz RF transmitter based on integrated photonics

In the last decade, the interest in software-defined ultra-wideband (UWB) and tunable radio frequency (RF) apparatuses with low size, weight, and power consumption (SWaP), has grown dramatically, pushed by the new 6G vision where, RF equipment shall enable a large number of fundamental applications as UWB communications, robot localization mapping and control and high precision radars, all of them contributing in revolutionizing our life style. Unfortunately, the coexistence of ultra-wideband and software-defined operation, tunability and low SWaP represents a big issue in the current RF technologies. In this article, to the best of our knowledge, the first example of a complete tunable software-defined RF transmitter with low footprint (i.e. on photonic chip) is presented exceeding the state-of-the-art for the extremely large tunability range of 0.5-50 GHz without any parallelization of narrower-band components and with fast tuning (<200micros). This first implementation, represents a breakthrough in microwave photonics.

Smart Restaurant Menu Ordering System Using Arduino Uno

The major issue faced in restaurants and hotels is the quality of service provided by them especially ordering of food. Traditionally, it used to take a long time for food ordering as waiter used to note down orders, place it kitchen and the food was prepared. It also involved traditional pen and paper method and the process was time consuming. It also involved a lot of wastage of paper. Hence, we have designed the smart restaurant in which the orders will be placed paperless using Arduino UNO, TFT touch display connected to the kitchen chef directly using RF Transmitter. This acted as the transmitting side. At the receiving side, the order placed is seen on LCD screen and indication of buzzer with the help of RF Receiver and I2C Module confirmed the placing of order to kitchen. Hence, the workers focused on billing and other work process and provided better quality services. We found out that this method is useful in many ways like- It not only saved the wastage of paper but also reduced the burden on the waiters and workers to great extent. Time management was also done as more and more customers could be handled by taking their orders and provide quality service. This setup is quite practical on basis such that this system can be implemented for small startups hotels and restaurants. The investment cost is also one-time investment as it requires less maintenance. The only fact it requires is to update the system as per our convenience and new offers. It also required average skilled labor to operate. Hence, we can conclude that this system is eco-friendly as it saves the paper usage by directly giving the order to kitchen and chef. The second grasping factor is that the waiters can involve them in other process of billing and other process. Hence it promotes the multi-tasking process. Third factor covered is that fresh food can be served at a faster rate to the customers due to this table-kitchen friendly process. It even eliminates the errors occurred due to traditional methods and also involves constant upgradation and upliftment of the system helps in better customer end services.