Industry Technology Lampang Rajabhat University <p><strong>ISSN 1906-5337 (Print)</strong><br><strong>ISSN 2672-9539 (Online)</strong></p> <p>วารสารวิชาการ คณะเทคโนโลยีอุตสาหกรรม มหาวิทยาลัยราชภัฏ ลำปางจัดทำขึ้น เพื่อเผยแพร่และประชาสัมพันธ์ผลงานวิชาการ ด้าน วิทยาศาสตร์และเทคโนโลยีอุตสาหกรรม โดยทำการตีพิมพ์บทความวิจัย และบทความวิชาการทั่วไป สิ่งประดิษฐ์และนวัตกรรม สาขาวิชาเทคโนโลยี วิศวกรรมศาสตร์ และสหวิทยาการด้านวิทยาศาสตร์และเทคโนโลยี</p> en-US Industry Technology Lampang Rajabhat University 1906-5337 Relationship Physical Fitness Assessment Results of Students at Rajaprachanugroh School 1 <p><strong>Abstract</strong></p> <p>Enhancing health and physical fitness is one of the important functions that schools need to test with their students. It will make them aware of the integrity and changes of the physical condition. In which the assessment of physical fitness of students at the school-age level had to assess a total of 5 items: 1) Body Mass Index (BMI) 2) Standing up and knee lift in 3 minutes 3) Stand up - Sit in 60 seconds 4) push the floor in 30 seconds 5) Sit and Reach. Which this research has the objectives to analyze the relationship of physical fitness evaluation of the said assessment list. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;To conduct this research, a sample of 812 students at Rajaprachanukroh 1 School was selected using data mining principles in the Association Rule model, using Apriori and FP-Growth algorithms, and Classification by selecting data comparisons using two algorithms: Decision Tree (Decision Tree), Model J48 and Random Forest, where data obtained from physical fitness testing of students. Build models and find relationships with Weka 3.8.5.</p> <p>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; The analysis of physical fitness relationships of Rachaprachanugroh 1 School's students, the relationship model of the student physical fitness test items using the decision tree, and the 70% percentage split model assessment was most effective. 100% accuracy, 100% recall, 100% F-measure, and the Apriori and FP Growth Association Rule models were configured. Minimum Support is 0.1 and Minimum confidence is 0.9, which will have 5 and 4 relationship rules, respectively, in which both types of rules are related. It was also found that some of the rules were derived from the relational rule and data classification. Get the same results.</p> Chitnapha maschai Nutchanart Srisano Visutr Maschai Wipawan Buathong Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 1 11 Reduction of Bubble Defect and Production Leveling: Case Study of a Hard Disk Drive Company <p>This research aimed to reduce the quantity waste from bubbles in the hard disk drive labeling process and to smooth production in the process of labeling and packing products according to the 7 Wastes. One waste problem is from bubbles on product labels being not smooth resulting in employee movement and time wastes. This study sought to improve this problem by collecting data and analyzing the root causes using a fishbone diagram. It was found that the waste bubble problem was caused by the weight not being able to diffuse all of the label. The researcher designed the Rubbing Tool Cover for pressing on the labels. Then the work process was improved by 1) studying the time spent at each station and reducing the cycle times using the ECRS technique, and 2) improving the barcode scanning equipment and process, dividing and reducing the time of work for each employee. The results of the research showed that the Rubbing Tool Cover reduced the waste bubble percentage defect on products from 18% to 2% (-88.88%), the percentage defect on packaging from 30% to 12% (-83.33%), and increased production capacity from 1,324 to 1,381 or 57 pieces/day, (+4.30%). As a result, the production process could run more smoothly.</p> Waraporn Chanwiang Sreymouy Sao Sakchai Dondee Supattra Budsaereechai Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 12 24 Design and Development of Cardboard Prototypes to Promote Learning in Robotic Technology <p>The aim of this research was to design, develop, and evaluate the performance of cardboard prototypes to promote learning in robotic technology. This research sought to provide a way for interested parties to develop their own robots in various forms. The programming board “NodeMCU” using C language and able to be designed and developed for use in the detection of gas and smoke, was used in this research. This research had 3 objectives: 1) to design and develop a robot prototype; 2) to assess the participants’ (n = 18) satisfaction with the robot prototype design and their development; and 3) to assess the performance of the prototype robot. The results of the experiment are as follows: 1) assessment in 5 areas of the design and development of the robot prototype using cardboard showed a good level (4.23/5, standard deviation = 0.73); 2) assessment of the participants’ satisfaction showed a good level (3.79/5, standard deviation = 0.64); and 3) the prototype robot could display output from the screen according to the instructions of the program at a good level: the gas and smoke detector using gas from the lighter was performed 10 times with the unit measured in part per million (ppm)- average of the gas was 412.2 ppm.</p> natsinee tangsiripaiboon Narathip Wongpun Pongsawat Amnakitikorn Weerachai Sawangtook Metawat Kavilkrue Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 25 35 A Computer Vision Application for Appropriateness Verification of Squat Exercise Posture <p>The program is studied about digital image and video processing to design and create a program to help for exercises through video cameras. The role of a video camera is gesture checking, correct squat exercising with human eyes. The purpose is to be comfortable in practicing posture for correct exercise method for decreasing injuries and allowing users to have more fun with exercise. The results of designing and creating this program by 5 testers and 20 squat postures/tester and keep the correct counting are 93% accuracy. The cause of the error was a sudden change in lighting conditions in the test area or an unnatural squat rhythm, such as faster or slower than the normal frame rate. The assessment of satisfaction from sport experts, athlete and normal users of a total of 5 peoples found that the evaluation of the use of the program. The overall satisfaction is good. It has an average rating of 4.06.</p> Nontarat Bumrungkiat Pheeraya Taothong Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 36 50 Energy Efficiency Assessment and Net Zero Energy Building Improvement Guidelines: In Case study of Lifelong Learning Institute Building, Chiang Rai Rajabhat University <p>The objective of this research is energy efficiency assessment of Lifelong Learning Institute Building, Chiang Rai Rajabhat University. Building structure data, lighting system, air conditioning system, and electrical equipment are investigated and are analyzed by Building Energy Code (BEC). Then, these data are analyzed building improvement method for zero energy building. The evaluation result of building envelope system found that, the overall thermal transfer value (OTTV) is not meet standard, but Roof thermal transfer value (RTTV) is meet to standard. The parts of light system, air conditioning system and total energy consumption is meet the standard as the requirement of building energy code.&nbsp;</p> <p>This research also study for energy efficiency building solution which are 2 conditions. The condition 1 is efficiency increasing of building envelop by wall insulation adding and glass replacement to energy saving glass. It found that, the result of OTTV evaluation is meet the standard. The condition 2 is renewable energy technology selection by 20 kWp solar roof top installation for electricity generation which has 100 unit per day of maximum power generation. It found that, this technology can produce enough electricity for Lifelong Learning Institute Building, Chiang Rai Rajabhat University. It can make to net zero of building which can be a model of net zero energy building of Chiang Rai Rajabhat University and green university preparing.&nbsp;</p> <p>&nbsp;</p> Jarun Khonrang Naret yaiwong Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 51 61 Productivity of the Drinking Water Filling Process: Case Study of Thap Kaew Drinking Water Plant, Nakhon Ratchasima Rajabhat University <p>Optimization of drinking water filling process: a case study of Thap Kaew drinking water plant Nakhon Ratchasima Rajabhat University to increase productivity and reduce the loss of water in the packing process. According to the problem analysis with cause and effect diagram and Why - Why analysis, it was found that there was low productivity due to slow filling of drinking water because each step was not continuous as one employee had to fill the drinking water step by step. The improvement was achieved by increasing the workforce by requiring water supply department staff to assist with the filling process and re-establish the water delivery schedule without affecting water delivery, increasing productivity by 133.41%. The problem of water wastage found that there was overflow in filling and a lot of effluent from rinsing the bottle due to uneven water supply nozzles, manual valves and no rinsing process; clear work on the expertise of staff only. The solution is to adjust the water distribution head to be consistent, set clear work procedures and change the use of manual valves to use automatic water on-off machines. After improvement, it was found that the amount of wastewater was reduced by 3.1 liters/time.</p> Warutai Dejtanon Jirawat Lopandung Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 62 74 Development of Herbal Incense Products of Ban Rong Pai Na Community, Bua Salee Subdistrict, Mae Lao District, Chiang Rai Province <p>This research aimed to analyze the opinions of the target group toward the development of herbal incense products for online distribution channels and to develop appropriate herbal incense products for online distribution channels. The research tools were focus group and an online questionnaire.&nbsp; The samples, purposively selected from the working population .The results of the research revealed that the strength of herbal incense products was the raw materials which were easy to grow and find in their communities and the knowledge of herbs.&nbsp; For the problems, it was found that 1) the size was too large, 2) there was smell of wood after burning, 3) the incense turned into powder after storing for a long period of time, 4) the package was not attractive, and 5) it was believed that burning one piece of incense was to call out the spirit. For the problem of production processes, it was found forming incenses took quite a long time. According to the data analysis from the questionnaires, it was found that the people considered the scent of the incense as the important factor for making their decision to buy the products. The natural scent of herbs was the most interesting scent. The second selection reason for buying was the price of the product, the most buying products priced from 51 – 100 per a piece of incense. For the opinions of the target group toward the design of herbal incenses products affecting their decision to buy the products, people preferred the designs indicating characteristics of herbs. For the contribution channels for herbal incense products through online markets, Facebook was the interesting online contribution channel.</p> Jarun Khonrang Viboonporn Wutthikun Maneerat Pachankoo Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 75 86 Development of an Extruder in the Making of 3D Printing Filament from Recycled Plastics <p>3D printing machines are very influential for engineering design. This machine is widely used in industry and educational institutions. There are many types of plastics used as printing material, such as PLA, ABS, PET, Nylon, TPU, PA, and HDPE. Some types are expensive. In addition, the problem of plastics waste is increased every day. Therefore, in this research, the objective was as follows: Recycled plastic extrusion quality, Print quality with a 3D printer and economic analysis. Recycled plastics of HDPE, ABS, and PLA were used as sample materials. The plastics extruder machine was designed and built. This machine was controlled by a Programmable Logic Controller (PLC) including an automatic extrusion heat control system and a rolling storage system. The results showed that PLA recycled plastics could not be extruded and stabilized according to the die design. Recycled plastics of HDPE and ABS could be extruded into filaments but the quality of filaments was approximately 60% for HDPE and 78% for ABS comparing with the standard size of the filament. When these filaments were used to print the 3D part, the quality of the ABS recycled plastics is greater than HDPE recycled plastics such as surface finishing, printing convenience and adhesiveness between layers. In economics, ABS recycled plastics can be used as a good substitute for 3D printing with 83.4% materials cost reduction.</p> Weerayut Jitwiriya Sittichai Limrungruengrat Boonrit Kaewprachum Copyright (c) 2021 Industry Technology Lampang Rajabhat University 2021-12-30 2021-12-30 14 2 87 98