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Journal of Mechanical and Electrical Intelligent System (JMEIS, J. Mech. Elect. Intel. Syst.) An international open-access peer-reviewed journal ISSN 2433-8273
Vol.7, No.1
TABLE OF CONTENTS
Articles
Multi-functional Patrolling Device for Pump Stations Dengjun Yang, Jiajia Liu, Xuemei Fan, Yiting Xu, Wei Jiang, and Seiji Hashimoto Journal of Mechanical and Electrical Intelligent System, Vol.7, No.1, pp.1-11, 2024. Abstract: The South-to-North Water Transfer Project (SNWTP) represents a critical infrastructure initiative aimed at mitigating water shortages in northern China. Integral to this project is the efficient operation of pump stations, such as the Baoying Pump Station, where the operational demands necessitate continuous, rigorous patrols to ensure functionality and safety. The traditional patrol process, which involves multiple inspections within an 8-hour shift, is labor-intensive and time-consuming, requiring approximately 315 minutes per shift. This paper introduces a multifunctional patrolling device specifically designed to enhance the efficiency and effectiveness of these inspections. The proposed device integrates various essential functions, including power management, real-time clock, OLED display, intercom, lighting, NFC sensing, Bluetooth transmission, and the measurement of temperature, noise, and vibration. By consolidating these functionalities into a single portable device, the patrol time is significantly reduced, improving operational efficiency and reducing labor costs. The devicefs modular design also allows for easy maintenance and future upgrades, ensuring its long-term viability in industrial environments. SolidWorks was employed to optimize the design of the device, resulting in a final assembly that is robust, lightweight, and user-friendly. The implementation of this patrolling device in the Baoying Pump Station has demonstrated a reduction in patrol time from 315 minutes to 230 minutes per shift, representing a 27% improvement in efficiency. This paper concludes that the multifunctional patrolling device not only enhances operational efficiency in pump stations but also has the potential for broader application in various industrial settings, where similar inspection routines are required.
Development and Evaluation of Dependency of Flow Rate on Differential Pressure Evaluation Device Akira Iizuka, Ronald M Galindo, Edwin Carcasona, Kenji Amagai, Akihiro Takita, and Yusaku Fujii Journal of Mechanical and Electrical Intelligent System, Vol.7, No.1, pp.12-26, 2024. Abstract: The authors have developed a device for evaluating the gdifferential pressure dependence of the flow rate through a nonwoven fabric filterh called the gThe Permeation Evaluatorh. gThe Permeation Evaluatorh consists of a pressure buffer set at a negative pressure by an exhaust fan, a fixture for attaching a filter to be measured, a differential pressure sensor, and a Flow-meter. gThe Permeation Evaluatorh can measure the relationship between the transmission flow rate and differential pressure of filters used in face masks and other products. The leakage flow rate of the device was measured at a differential pressure of 0 [Pa] ~ 500 [Pa], and the leakage flow rate was expressed by the estimation equation Q = 0.00033¢P with a standard uncertainty of 0.20. This value indicates the degree of leakage flow of the device. gThe Breathing air simulatorh consisting of a manually operated piston-cylinder mechanism (capacity: 1.75 [L]) and a Flow-meter was developed as an option to provide a disturbance flow rate to the gThe Permeation Evaluatorh. gThe Breathing air simulatorh was connected to the gThe Permeation Evaluatorh and a disturbance flow rate was applied to the pressure buffer while changing the speed at which the piston was moved, and the degree of agreement between the applied disturbance flow rate Q₂ and the exhaust flow rate Q₁ from the pressure buffer was measured. The RMS value of [Q₁ - Q₂]/Q₁ was obtained. The results were as follows. When the piston was moved at high speed (1}0.1 [s]), the values were 21 [%] in the Exhaust section and 24 [%] in the Intake section. When the piston was moved at middle speed (2}0.1 [s]), the values were 16 [%] in the Exhaust section and 13 [%] in the Intake section. When the piston was moved at low speed (3}0.1 [s]), the values were 11 [%] in the Exhaust section and 9.2 [%] in the Intake section. These values indicate the reliability of the flow measurement. The analysis was performed in the range of | Q₁ | > 10 [L/min] in the Exhaust and Intake operation sections.
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