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Wireless Carbon Monoxide Level Control and Monitoring System
(2025-01-01)
Rerkratn, Apinai
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Riewruja, Vanchai
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Petchmaneelumka, Wandee
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Tammaruckwattana, Sirichai
This paper proposes an online carbon monoxide control and monitoring system. The proposed system comprises an MQ-7 CO gas sensor module, a DHT11 digital temperature and humidity sensor module, an ESP8266 module, and a Relay Module. The ThingSpeak platform is used to create HMI for online monitoring of CO level, temperature, humidity, and status of the ventilation fan. This proposed system can measure CO and monitor all parameters of measurement data, alert users when CO values exceed the set value. In addition, the measured CO values are used to control the ventilation system operation (ON or OFF) to maintain the CO at a non-harmful level. The experiment testing and results with three conditions show that the proposed system can measure and monitor CO level, temperature, and humidity online with satisfying values. The ventilation fan can operate with function as a design procedure and maintain CO at a non-harmful level.
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Application of 3D Printer to Create Pet Casts
(2025-01-01)
Phaisalpanumas, Pipat
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Monkaew, Nattasit
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Chutikan, Damisara
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Khemavuk, Premporn
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Tammarugwattana, Narin
This paper presents the application of 3D printer to create pet casts. The problem of injuries from falls or symptoms related to bone injuries are symptoms that veterinarians diagnose as potentially treatable by external splinting to allow the bones to fully fuse. Differences in physiology are limitations in splinting and structuring the splint. This research introduces 3D printing technology to help the creation of splints for pets to increase treatment options using innovations or concepts. Study the current state of external splinting treatment methods for pets and design the research method was started by scanning organs to be splinted with a 3D scanner. The 3D images are then used to creat a model for splinting by designing with the Sintratec 3D modeling computer program. Then create the splints by burning plastic powder crystals to harden with a 3D printer and clean the surfaces by sandblasting and polishing. The materials used to create the splints in this study are two types of engineering materials: polyamide12 (PA12), suitable for creating hard splints, and thermoplastic elastomer (TPE), suitable for creating soft splints. Both materials have good mechanical properties and are strong impact resistance, chemical resistance, and high heat resistance. The finished splint pieces can be easily split to the pet model, reducing the steps compared to the normal splints, resulting in a shorter splint time, depending on the location or organs the splints are placed, and reducing the pet stress caused by being restrained during splinting. This research presents the introduction of technology and its advantages to help increase treatment options for pet injuries, which is beneficial to pets and pet owners, and helps veterinarians provide appropriate treatment.
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Prototype of Chipping and Briquetting Machine for Eucalyptus Wood Processing
(2025-01-01)
Phaisalpanumas, Pipat
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Namboot, Nattarat
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Chutikan, Damisara
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Usadornsak, Chartchai
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Tantitippawan, Naritsak
This paper presents eucalyptus, versatile plants that can grow well in almost every area of Thailand. In the future, the demand for eucalyptus wood tends to increase both domestically and internationally because eucalyptus wood has become a major raw material in various industries and is also an important source of energy in terms of biomass fuel production. The research team has designed and built a eucalyptus woodchipper and pelletizer prototype. The machine has a width of $1,300 \text{mm}$, a length of 800 mm, and a height of 900 mm. Inside the machine, there are log conveying systems, a shredder, and a pelletizing system. The shredder uses a 2.2 kW gear motor for shredding logs and a set of 23 blades. The conveying system consists of 4 upper and lower conveyors and uses a 0.2 kW gear motor. The speed is controlled by an inverter. The pelletizing system uses a hydraulic system for compression, which has a hydraulic pump motor as the source of pressure. In the prototype pelletizing and baling test, the optimum speed of the conveying machine was set at 5 rpm, the chopping speed at 320 rpm and the baling pressure at 220 $\text{kg} / \text{cm} 2$. The processing of eucalyptus into the form of wood chips reduces the volume of eucalyptus by 46 percent, allowing more logs to be transported at a time and significantly reducing transportation costs. In addition, the creation of new products from eucalyptus processing will help generate more income for eucalyptus farmers than just cutting and selling eucalyptus.
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Closed Pig Barn Control System Model
(2024-01-01)
Nattanamaharoj, Nithinan
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Tammarugwattana, Narin
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Phaisalpanumas, Pipat
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Tammaruckwattana, Sirichai
This paper presents a temperature and humidity control model for use in a pig barn with an evaporative cooling system and fogging system through an application that can be accessed from the Internet. To be compatible with Farming 4.0 and reduce the problem of epidemics in the pig farm. Temperature and humidity are measured through sensors and used to control them through a microcontroller. Users can monitor the temperature, humidity, and system operation via the application. The control system can be controlled with both manual mode and automatic mode.
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Resistive-Sensor Interfacing Circuit for Remote Measurement Using CFOA
(2024-01-01)
Petchmaneelumka, Wandee
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Rerkratn, Apinai
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Tammaruckwattana, Sirichai
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Kaewpoonsuk, Anucha
An alternative approach to implementing an interfacing circuit for resistive sensor-based remote measurement is presented. The proposed technique uses a Current Feedback Operational Amplifier (CFOA) as an active building block to produce an output voltage linearly related to the resistance of the sensor. Moreover, the accuracy of the output voltage is improved by the enhancement of CFOA. In addition, the proposed circuit provides compensation for the effects of lead-wire resistance. The performance of the proposed technique is discussed in detail and confirmed by PSPICE program simulation and experimental implementation. The resistance decade box is used in the experiment. The maximum error on the output voltage of the experimental results is about 0.4234 %. The experimental results show that the proposed technique provides good performance.
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Emulation Technique for Wind Turbines Using Servo Motor and Induction Motor
(2024-01-01)
Tammaruckwattana, Sirichai
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Taecharoenwiriyakun, Suriya
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Suppaadirek, Natchanon
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Tammarugwattana, Narin
This paper proposes the emulation technique for wind turbines using two types of motor, servo motor, and induction motor. The focus is on simulating the work process of wind turbines at multi-wind velocity to test the capacity and efficiency of generating three-phase electricity. The wind turbine emulator was created by using a program and mechanical parts. The goal of this emulator is to check the efficiency of wind turbine blades at different wind speeds and to test the accuracy of the simulation method by using a different motor. The first emulator uses a 400-Watt synchronous generator from a wind turbine connected to a 400-Watt servo motor controlled by a servo amplifier. The second emulator uses a 400-Watt synchronous generator from a similar wind turbine connected to a 400-watt induction motor installed with an encoder controlled by an inverter. Motor torque is calculated by using mathematic equations from the LabVIEW program, and the data of the wind turbine blade is simulated by using the ANSYS program.
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Experimental Verification of Wind Power Generation System Using Diode Bridge Rectifier Circuit with Wind Turbine Simulator
(2022-01-01)
Tammaruckwattana, Sirichai
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Reangkittakarn, Sitthaphat
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Suppaadirek, Natchanon
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Ohyama, Kazuhiro
– This paper presents Wind Power Generation System using Diode Bridge Rectifier (WPGS-DBR method). Experimental results have been obtained by Wind Turbine Simulator (WTS). The WTS emulates wind turbine behavior using a servo motor as a drive system. Mechanical torque references used to drive the motor are calculated using wind turbine data such as wing blade, wind velocity, and wind turbine rotation speed. DBR method has three-mode control for three ranges of wind speed: low, medium, and high, respectively. In low and medium mode, the control system adjusts the armature current of a generator and DC link voltage with a Vector-Controlled Inverter (VCI) to control wind turbine speed. In high mode, the control system modulates the pitch angle of the wind turbine using a pitch angle control system for controlling wind turbine rotational speed. The DBR simplifies the maintenance of WPGS while improving reliability. In addition, the DBR method costs less compared with the WPGS using a PWM converter.
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Wind Tunnel Model for Natural Wind Velocity
(2020-10-25)
Taecharoenwiriyakun, Suriya
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Suppaadirek, Natchanon
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Tammaruckwattana, Sirichai
At the present time, the demand for energy in Thailand is increasing rapidly. Therefore, improving production efficiency is important in solving energy problems. According to the Alternative Energy and Alternative Energy Development Plan 2015-2036 in Thailand, the objectivity for wind power generation has increased dramatically. For this reason, the research team had the idea to create a wind tunnel with adjustable wind speed to mimic local wind speed in Thailand to be used in designing and analyzing wind turbine blade designs to suit various wind speeds. This can increase the efficiency of the production of energy even more. Wind speed adjustment or the pressure, lift and rotation speed measured can be done by a computer. By applying the PID control theory, it can precisely control the wind speed.
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Low wind speed wind turbine blade design for Thailand
(2020-08-31)
Suppaadirek, Natchanon
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Saengsuwan, Noppakoon
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Tammaruckwattana, Sirichai
Renewable energy is a reason why this study has been chosen. In this paper focused on an analysis of the characteristics of the wind when the wind turbine blade is encountered using a commercial fluid dynamics solver such as Fluent by selecting the impact angle of 5, -5, 10, 15, 20, -10, -15 and -20 degrees. Aerodynamic characteristics such as lift coefficient, drag coefficient, lift to drag ratio has been evaluated in this study. Fluent simulation results will be compared with the result of the milling airfoil tested in wind tunnel. Our goal is to a construction of wind turbine in low wind speed country like Thailand.
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Experimental verification of automatic sorting machine using infrared proximity sensor and microcontroller
(2020-07-01)
Thappho, Darakorn
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Tammaruckwattana, Sirichai
This article proposes the design and builds of an automatic marigold (economic crop) sorting machine by sorting sizing 5 sizes with working together between conveyor belts, electric motors, and microcontroller control unit. The system designed to connect to WIFI to store data on Cloud computing and can display the information through the screen in Real-Time in numeric data format and graphs, Test the accuracy of the system by comparing experiments between microcontroller control unit and PLC control unit, which sold in the market at a high prices but this designed system has a low price and equivalent performance. The results from repeated tests showed that the automatic marigold sorting machine can operate as specified according to the design by separating the size of the marigolds.

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