Door Control Research Articles

Reliability analysis of the vehicle door system EDCU based on Weibull distribution

The paper established a two-parameter Weibull distribution model to analyze the failure law of key components of metro vehicles and employed the least squares method to fit the parameters of the Weibull function. The paper provided a detailed introduction of the model's parameter fitting method based on actual historical failure data. Taking the EDCU (Electrical Door Control Unit) as an example, the failure rate, cumulative failure rate, and reliability of EDCU for 3 different vehicle models were calculated, and the calculation results were verified to conform to the Weibull distribution through Q-Q diagrams. The results show that although the designed service life of EDCU of vehicle door system is 15 years, the reliability of the EDCU decreases significantly around 10 years. The EDCU reliability of the three vehicle models declines by 22%, 4.2%, 10.6% and the failure rates are 2.7%, 0.57%, 1.13%. Based on the reliability of EDCU mentioned above, while ensuring the reliability of components, the maintenance methods of components can be optimized to reduce maintenance costs.

Study on CO dispersion characteristics and isolation door control technology of refuge chamber in coal mine

To investigate the dispersion process of the underground toxic gas carbon monoxide (CO) into the refuge chamber during a mine disaster and enhance the survival rate of trapped miners, a simplified model of an underground refuge chamber and the main roadway was constructed. The impact of temperature and pressurized air volume on CO dispersion into the refuge chamber has been examined through both analog experiments and numerical simulations, and the reliability of the simulation results was verified. The results indicate that CO dispersion into the refuge chamber through the top of the protective isolation door occurs when the temperature in the refuge chamber is lower than that of the toxic gas. When the temperature of the toxic gas is higher, it tends to enter the refuge chamber through the bottom of the protective isolation door. The evolution of CO concentration in the transition chamber can be divided toxic survival chamber can be categorized into a sudden decline stage and a stable stage. And a flexible isolation door designed to control the entry of toxic gases into the refuge chamber was implemented, and its impact on CO dispersion has been compared and analyzed. When the temperature of the main roadway is 50 °C and the temperature of the refuge chamber is 20 °C, the required pressurized air volume to maintain the CO concentration within the safe threshold (24 ppm) is reduced to 69.6% of that needed without the isolation door, thereby significantly reducing the infiltration of harmful gases from the main roadway into the refuge chamber.

PLC BASED RAILWAY ACCIDENT AVOIDANCE SYSTEM

The paper presents a comprehensive framework for enhancing railroad security by integrating technologies such as signalling arrangements, train closure security systems, automatic railroad gate control, intrusion detection, obstacle detection, tunnel control, and automatic blockade systems. These systems utilize sensors and advanced controls to detect and mitigate potential threats, enhancing security measures and reducing the risk of accidents. Programmable Logic Controllers (PLCs) in railroad systems manage several security protocols, including emergency brake, over-speed control, train door control, and fire detection. They also ensure passenger and train safety by monitoring temperature, pressure, and voltage parameters. In the event of any anomalies, the PLC triggers an alert and takes necessary actions to prevent accidents. Key Words: : Automatic Barricade System, Automatic Railway Gate Controlling, Crack Detection System, Obstacle Detection, PLC, Signalling Deployment System, Tunnel Power Saving System.

SISTEM KENDALI PINTU DENGAN SENSOR SENTUH, INFRARED, DAN KIPAS MENGGUNAKAN VOICE RECOGNITION BERBASIS NODEMCU

Technology is developing rapidly and home security is very important for all householders. This door control system is designed so that house residents feel safe and comfortable when entering and leaving the house. Residents can use door magnets and touch sensors to lock doors and receive information via WhatsApp to monitor when creatures enter their homes.The design of this tool system uses a Nodemcu ESP8266 microcontroller to process data collected through touch, infrared and sound sensors. This touch sensor is used to open the door or move the servo to open the door, and the door solenoid valve is used to unlock the door. The infrared sensor will then detect when someone enters your home, a buzzer will sound, and a notification will be sent via WhatsApp. The sound sensor is used to turn the fan on and off.

GLASS PARTITIONS FOR FIRE PROTECTION IN CONSTRUCTION

The main purpose of fire doors is to prevent the spread of fire, smoke and heat inside a building and to enable the safe evacuation of people. In the event of a fire, they close automatically. There are also sliding doors suitable for operation in the event of a fire alarm. They are equipped with automation systems that allow them to open automatically when a fire is detected, making it easier to evacuate people and allowing faster access for the emergency services. There are many additional factors and solutions associated with fire doors and automatic doors that are worth considering in terms of fire safety. Fire doors can be fitted with alarm and monitoring systems that will automatically open the door when a fire is detected, send a signal to the emergency services and activate other safety systems such as smoke extraction or fire suppression systems. Innovative solutions related to fire doors are now being used, such as thermally active doors that automatically react to a rise in temperature and close in the event of a fire. Door control and monitoring systems are also becoming increasingly sophisticated, enabling remote management and real-time monitoring of door status. The drive components and automation of fire doors are subject to specific requirements, as defined by standards and regulations.

The simulation design of smart home system based on Internet of Things

With the upgrading of the traditional home industry, the deep integration of home design and Internet of Things technology is the development direction of modern smart home design, and it creates a comfortable, energy-saving and safe working and living environment for people. This paper designs an application scenario of the Internet of Things in smart home design, integrates smart home, Internet, Internet of Things and other technologies, designs the overall architecture, topology and IP address allocation scheme of the system, and realizes the intelligent door control and temperature control system of smart home based on the simulation platform. The whole network is connected to ISP Internet through home gateway and mobile data. After testing, the system runs stably as a whole, thus providing a solution for the application of the Internet of Things in smart home.

Android Application for Automatic Door Control System using Body Temperature Measuring Sensor

One way for people to prevent the transmission of Covid-19 in indoor and outdoor activities is by using body temperature detection. People who have a body temperature higher than the measurement limit are prohibited from mingling with other people because they have a high probability of being infected with the virus and can transmit it to other people. Manual checks in public places can cause officers to potentially contract the virus and can spread it to other visitors more quickly. Therefore, it is necessary to develop an automatic body temperature measurement system by displaying the results of the measurements on a screen and automatic door as a further prevention step, and temperature data can be stored in a database to help make the right decisions in preventing the spread of Covid-19 in that place. The implementation stages of the activities include: Data Collection, Preparation of Technology Design and Purchase of Materials, Product Manufacturing, Product Testing, Product Evaluation. An Android application for an automatic door control system using a body temperature measurement sensor can be developed into an even better tool. The development of this prototype will be developed by adding a PIR sensor and system modifications. The addition of a PIR sensor is used to increase the security of the tool to detect only human body temperature which can be recorded in order to minimize data errors. The system modifications made can be used for initial examination assessments with body temperature and also the addition of a system for measuring body weight and height to complete the assessment data.

Research on the Co-simulation System of Subway Control Circuits

In order to solve the problems of complex control logic and the difficulty of simulating function modules due to the high coupling degree of subway control circuits, a subway control circuit co-simulation system is designed in this paper. By analysing the components data and connection relationship in the subway control circuit schematic diagrams, the network topologies are automatically generated, and the mathematical relationships between nodes, branches and components states are established, so as to build a complete logical control model. The depth-first search (DFS) algorithm is adopted to search the effective path across the topology, the event management unit is added to solve the linkage control of the relay, and the logic function simulation of the function module is realized by embedded script. Finally, the feasibility of the simulation system is verified through the simulation test of the subway door control circuits and the analysis of the simulation results. The system is conducive to the functional test and algorithm verification at the subway design stage, and has a good application prospect in the field of subway driver training.

Smart automatic COVID door opening system with contactless temperature sensing

Every time someone wants to enter a traditional door, they usually have to open it by hand. As a result of the current COVID-19 pandemic situation, it is imperative that every human being take precautions such as wearing a mask, maintaining a distance, sanitising their hands and arms, and not touching anything excessive. A prototype of an automatic door control system with a body temperature sensor is designed to limit direct physical contact with conventional door knobs, preventing the spread of COVID-19. The main motto of this project is to utilise a sensor with a combination of embedded equipment for the door opening system. The components MLX90614 Temperature Sensor, Passive Infrared Sensor, Arduino Uno, 16 × 2 Liquid Crystal Display, Servo Motor, and Light Emitting Diodes are used to implement the system. The door gets opened when any human movement is detected near the door, as well as when it detects its temperature and the presence of a mask with the help of various tools and technologies. A passive infrared sensor observes the motion and transmits a signal to the transistor, which in turn gives an interrupt signal to the programmable ATMEGA microcontroller. A contactless infrared digital temperature sensor then senses the body temperature of the human, and if the temperature is above the brink temperature, the output signal is transmitted to the direct current motor that's used to unlock the door and to the Arduino. This is a prototype where all these electronics are plugged together to get the corresponding output

RANCANG BANGUN SISTEM PERHITUNGAN ORANG ATAU PENGUNJUNG DALAM SEBUAH RUANGAN BERBASIS ARDUINO

This research aims to design and implement an Arduino-based system for counting and tracking people in SMK Tunas Baru Berkarya's auditorium. The system will use infrared sensors on the doors to detect visitors and Arduino as the central system to process the data. It will also control the doors using servo motors. The study will involve several stages, including selecting and configuring the infrared sensors, developing Arduino programs for visitor detection and counting, and adjusting the servo motors for door control. Testing and evaluation will ensure the system's reliability and effectiveness in monitoring room capacity and controlling door access based on available capacity. The research's outcomes are expected to benefit the auditorium management by optimizing room usage, enhancing visitor safety, and providing a seamless experience for visitors.

A flood detection system and flood door control based on Arduino

Flooding has become one of the most serious problems for Indonesians, particularly in flood-prone areas. Floods can be hazardous to the community, particularly if they occur suddenly, at night, or at unpredictable times. The answer to these problems is the installation of a flood detection system and a flood barrier door control system. In this paper, a flood detection system and flood door control based on will be presented. Ultrasonic sensors monitor the air level, a SIM800L module delivers signals, a stepper motor operates the door, an LCD shows the air level, and a buzzer offers an immediate warning. The accuracy and precision of the ultrasonic sensor are 98.83% and 99.40%, respectively. Based on the accuracy and precision of the system, it can be concluded that the system can be used for flood control systems.

Stretchable and Self-Adhesive Humidity-Sensing Patch for Multiplexed Non-Contact Sensing.

The slippage of moisture-sensitive materials from substrates during bending or stretching is a common issue that causes baseline drift and even failure of the flexible humidity sensors, which are essential components of wearable electronic devices. In this study, we report a stretchable, self-adhesive, and transparent humidity-sensing electronic patch comprising liquid metal particle electrodes with a stretchable serpentine structure and a humidity-sensing layer made of Ti3C2Tx MXene/carboxymethyl cellulose. This patch is constructed on a soft-hard integrated heterostructure substrate and demonstrates stable humidity-sensitive response performance at 100% tensile strain, along with autonomous adhesion to human skin. Additionally, it exhibits maximum response (1145.4%) at 90% relative humidity (RH), fast response and recovery time (1.4/5.9 s), elevated sensitivity (64.63%/% RH), and preserved humidity sensing under deformation, as well as easy scalability for multiplexed detection. We further illustrate the patch's potential applications in healthcare and environmental monitoring through a non-contact security door control system and wind monitor system. Our proposed strain-isolation strategy can be extended to other rigid conductive materials and stretchable substrates, providing a feasible mechanism for producing stretchable electronic skin patches.

Development of Intelligent Door Lock System for Room Management Using Multi Factor Authentication

Keys play an important role in a security system. Most room door security systems still use conventional door locks, especially in room management applications. Room management with conventional keys has several problems, such as long key searches for each loan, and easily lost and duplicated. Therefore, the authors propose a door lock system that is capable of automating room door control and supervision via the internet network. Research that has been done previously uses single factor authentication (SFA). This technology is less secure for the authentication process for parties/users who want to access the room. This research proposes that a system with multi factor authentication (MFA) aims to protect the system from unauthorized users. The MFA concept will be implemented by validating the physical token on the RFID card and the security code or PIN entered by the user. MFA also increases the level of security and allows the implementation of identification, verification and authentication to ensure user authority. The results of this study are system prototypes that can work well, the system can be realized using backend services using expressjs and data stored in cloud services that can be accessed anytime and from anywhere by the client. The system can also be realized using a combination of nodejs, expressjs, PostgreSQL and esp32 client technologies. The validation process at check-in can occur within 207ms. The server is reliable enough to execute 500 requests simultaneously. Overall, the system has worked well for room management.

Implementasi Sistem Kendali dan Monitoring Keamanan Pintu Berbasis IoT Menggunakan Perangkat Mobile

One of the important things in the management of the lecture building is the need for a security system to lock the door. This is necessary to avoid the possibility of theft and negligence in opening or closing the door at certain hours. The purpose of this study is to implement an Internet of Things-based door security control and monitoring system using a mobile device. This system is a substitute for door security that uses conventional locks. The system can be accessed by setting the operating time from 07.00-17.00. If there is a change in operational time, the admin can reset the operational time. Before the operating time ends, the speaker gives an automatic door lock warning, and the door is automatically locked and cannot be accessed. In addition, the system is equipped with a door alarm using a buzzer and a notification is sent via the application when the door is forcibly opened. The door control process starts by reading the operating time and the status of the door lock solenoid. If the initial status of the door lock solenoid is locked, the RFID tag sends data to the RFID reader, then the door lock solenoid opens. The test results show that the response time for opening and locking doors using RFID is 26,22 seconds and 22,25 seconds. The response time to open and lock the door using the application is 5,03 seconds and 5,34 seconds, respectively. The average response time when the door is forcibly opened is 14,83 seconds

Brief Discussion on the Comparison of Construction Plans for the Reconstruction of the Platform Door Control System and the Analysis of Major and Difficult Points

Brief Discussion on the Comparison of Construction Plans for the Reconstruction of the Platform Door Control System and the Analysis of Major and Difficult Points

Deep reinforcement learning based train door adaptive control in metro tunnel evacuation optimization

Passenger evacuation in a metro tunnel is affected by distinct factors in the environment; thus, it is a huge challenge for both designers and managers throughout the metro system’s life cycle. A lateral evacuation platform is usually designed in a modern metro tunnel, and its evacuation efficiency is directly affected by train door opening strategy. By comparing the strategies of opening one, two, three, and four train doors, it is found that opening more doors improves evacuation efficiency. However, when two or more doors are accessed, this can lead to congestion on the evacuation platform near the train door. To reduce the congestion and improve evacuation efficiency, an adaptive train door control policy is proposed in this study, which features an adaptive dynamic programming method, namely, deep q network (DQN). The information of the environment and the state of the train doors are selected as the input and output of the control policy. By simulating scenarios under random, sequence, and DQN policies, the evacuation efficiencies are detailed. Results show that the proposed adaptive control method effectively improves evacuation efficiency. This method helps overcome the disadvantages associated with the fixed train door opening strategy and provides an optimal train door control policy during tunnel evacuation.

Absence of visitors during lockdown reveals natural variation in carbon dioxide level in the Glowworm Cave, Waitomo, New Zealand

Waitomo Glowworm Cave is a highly visited cave where the highlight is viewing the bioluminescence display of a large colony of glowworms. Anthropogenic carbon dioxide build-up in the cave is prevented by management of chimney-effect ventilation aided by a network of microclimate sensors. A cave door prevents ventilationunder drying conditions and promotes it when necessary to clear CO2 and when inflowing air has high relative humidity. A COVID-19-related nationwide “lockdown” in New Zealand from March 2020 resulted in neither staff nor visitors being present in the cave for 60 days, and provided an opportunity to assess the natural microclimate of the cave, especially the natural variation in partial pressure of carbon dioxide (pCO2). In addition, comparison to the previous year showed that the presence of people in the cave increased the cave temperatures but the effect was short-lived due to cave ventilation. During the period of lockdown, the daily increase of carbon dioxide partial pressure (pCO2) due to visitors was absent. When the cave door remained sealed, pCO2 varied and tended to lie at levels above that of the external atmosphere (410 ppm). Notably, rain events raised pCO2 by up to 200 ppm (v/v), which appeared to be sourced from both stream water and drip water. These natural CO2 sources rarely reached the levels associated with cave visitation. The results support current management practices that use door control to enhance cave ventilation when people are in the cave or when natural conditions (high stream levels and high drip-water levels) promote CO2 outgassing into the cave. Suppressing ventilation outside of those times reduces the risk of introducing dry air that could desiccate the glowworms.

Design Of Non-Contact Human Body Temperature Detection Based On Internet Of Things (Iot) To Open The Door Automatically

Covid-19 has hit Indonesia since March 2020; as a policymaker, the government has imposed new regulations so that everyone can leave the house and do work without worrying about being exposed to the Covid-19 virus. Measurement of body temperature is the fundamental way to determine the condition of body temperature. However, the problem is that when a thermometer is used to check the temperature of the human body, it is still carried out in direct physical contact between humans so that the risk of transmission of the covid-19 virus can occur. Based on these problems, a thermometer was made, which can be used to check human body temperature without making physical contact. Using the prototype method and system design with UML diagrams, the temperature sensor GY-906 MLX90614 (Temperature detection sensor) was used to build a prototype non-contact human body temperature detection monitoring system based on the Internet of Things (IoT) to open doors automatically.). body), LCD (Liquid Crystal Display) displays the results of the human body temperature, servo motor as an action system in the form of a sliding door controller, ESP8266 Wifi Module, which is used as a microcontroller that processes sensor data and sends sensors through a wireless network. The data sent by the ESP8266 Wifi Module can be monitored via a Web application.

Design of Electromagnetic Compatibility in automatically-controlled Door Control System used in EMU

In order to improve anti-interfere ability and increasing stability and reliability of automatically-controlled door Control System used in high speed Train. In this paper, we analysis the reason of electromagnetic interference and electromagnetic radiation on the system. the restrained technology of t he hardware interference was studied from the ranges of circuit board design , GND design , insulated technology and power interference rest rained aspects , and the software anti-interference mechanism was al so studied from redundancy. Based on this , the design of electromagnetic compatibility in automatically-controlled door Control System used in high speed Train was accomplished.Through actual vehicle experiments , the system design was verified , and the result showed that the system design is accuracy , reliable and creditable.

RANCANG BANGUN MAGNETIC SOLENOID DOOR LOCK DENGAN SPEECH RECOGNITION MENGGUNAKAN NODEMCU BERBASIS ANDROID

Door locks are one of the most important requirements for today's security systems and provide privacy for a room with a specific purpose. Therefore, Speech Recognition technology is needed as a substitute for conventional keys to make it more practical. This research is to design a magnetic Solenoid door lock with Speech Recognition using an Android-based NodeMCU ESP8266 which can make it easier for humans to open door locks and close door locks easily just by opening the application and saying Voice commands. NodeMCU ESP8266 is the main controller for controlling the door when the command is spoken in the Voice Control application which is connected to the android smartphone as a controller for opening the door lock and closing the door lock. The design of this Door Control tool uses the main components, namely NodeMCU ESP8266, Magnetic Solenoid door lock, Relay Module, Power Adapter. While the supporting components are Breadboard, IC 7805, DC Power Jack, Jumper Cable. Speech Recognition application on Android smartphones as a control system to unlock doors and close door locks remotely or close. This application aims as a control tool to open the door lock and close the door lock with Voice commands. This tool can make it easier for users to open door locks and close door locks online.Keywords : Door Lock, NodeMCU, Magnetic Solenoid, Speech Recognition, Android