Overview

In modern industrial environments, effective door management is crucial for ensuring safety and efficiency. JUTAI’s Industrial Door Opening Solutions leverage advanced automation technology to enhance the reliability and intelligence of door control systems. Our solutions encompass a variety of door types, including sliding doors, swinging doors, and roller doors, tailored to meet the diverse needs of different applications. By integrating high-performance sensors and control systems, JUTAI’s products can monitor door status in real-time, ensuring quick response times and precise control, which ultimately streamlines operational workflows.

JUTAI’s Industrial Door Opening Solutions not only deliver exceptional performance but also prioritize safety and user-friendliness. Our systems are equipped with advanced safety light curtains and ground sensors, effectively preventing accidents and injuries. Additionally, the solutions support remote monitoring and operation, allowing managers to stay informed about door statuses and respond promptly. Whether in logistics centers, manufacturing facilities, or other industrial settings, JUTAI’s solutions provide customized services that help clients enhance productivity and safety standards.

1. Loop Detector

Working Principle

The core principle of the loop detector is based on electromagnetic induction. When a vehicle enters the detection area, the metal body interferes with the electromagnetic induction coil buried in the ground, thereby changing the inductance of the coil. The loop detector monitors the change of this inductance in real time. When the change reaches a certain preset threshold, it sends a signal to the industrial door control system to instruct the door to open automatically.

Specific steps:

Installation of the induction coil: Embed a ring-shaped electromagnetic coil under the ground in front of the industrial door, usually buried under concrete or asphalt, and the shape and size of the coil depend on the application scenario.

Inductance change detection: When the coil is energized, an electromagnetic field is generated, and the detector measures the inductance value of the coil in real time. This value will change when a metal object (such as a vehicle) enters above the coil.

Signal transmission: When the inductance change exceeds the predetermined value, indicating that a vehicle has entered the detection area, the loop detector generates an output signal, which is sent to the control unit of the industrial door through a relay or interface.

Door body opening: After receiving the signal, the control unit executes the door opening command to open the industrial door automatically.

The door closes after the vehicle passes through: When the vehicle leaves the detection area, the inductance value returns to normal, and the detector can choose to close the door after a delay to prevent the door from closing immediately because the vehicle has just left.

Advantages of using loop detectors
High accuracy and sensitivity: The loop detector is very accurate in detecting vehicles and can identify almost all types of metal vehicles. Compared with infrared sensing and other methods, it is less affected by environmental factors such as light and weather.

High level of automation: The vehicle can automatically sense and trigger the opening of the door body, reducing manual intervention and improving traffic efficiency. It is especially suitable for large logistics and industrial sites with frequent entry and exit.

Strong reliability: The loop detector can usually operate stably for a long time in harsh environments and has good anti-interference ability, especially suitable for outdoor applications. It is insensitive to weather conditions such as wind, rain, and fog, and is particularly suitable for industrial environments.

Reduce false triggering: Because the loop detector specifically detects metal objects, it is not easily triggered by non-vehicle objects (such as people or small animals), which is important to ensure the accurate operation of industrial doors.

Low maintenance cost: The induction coil buried in the ground has strong durability, and the daily maintenance cost of the loop detector is low. You only need to check the circuit and coil regularly.

Strong customization and compatibility: The loop detector can set different trigger sensitivity and delay parameters according to the specific needs of the industrial door, and is compatible with various types of door control systems.

2. Radar Sensor

Working Principle 

Pedestrian-vehicle diversion radar usually adopts the technology of microwave radar or ultrasonic radar. These radar sensors emit electromagnetic waves of a certain frequency, which are reflected back when they encounter an object (e.g. a vehicle or a person). The radar sensor analyses the presence of the object, its speed, distance and other information by receiving the reflected wave to determine whether it is a person or a vehicle.
Main working steps:
Radar Wave Transmission: The radar sensor continuously transmits high-frequency electromagnetic waves or microwave signals to the surrounding area.
Signal reflection and detection: When an object enters the radar sensing range (e.g. a vehicle driving into the industrial door area or a pedestrian approaching the industrial door), the emitted radar wave encounters the surface of the object and is reflected. The sensor receives the reflected wave and analyses the time difference, frequency change and other information of the returned signal.
Object classification and determination:
Vehicle identification: Due to the metallic texture and large reflective area of the vehicle, the radar sensor is able to easily identify the presence of the vehicle.
Person identification: the radar sensor is able to distinguish whether it is a person or a vehicle by the characteristics of the object's movement speed, volume and reflected signal. When smaller reflected waves are detected and the movement speed is slower, the system can judge that it is a pedestrian.
Signal output and control: when the radar sensor recognises a vehicle or a person, it sends out a control signal to activate the opening mechanism of the industrial door according to the preset rules. In general, vehicles or large objects passing by will trigger the door to open, the personnel can choose not to trigger the door to open or through other means of diversion.
Industrial door control: After the door body receives the signal, the control system starts the motor to make the industrial door open. When the detection of vehicles leave or pass through the completion of the radar sensor can again detect the changes in the reflected wave and send out a signal to close the door.

Advantages of pedestrian and vehicle traffic separation radar

1) High accuracy and sensitivity
The radar sensor can accurately detect the presence of people and vehicles, whether in the dark, rain or snow or bright light, the recognition performance of the radar sensor will not be affected. The radar wave has strong penetration ability and is not interfered by environmental light, humidity and other factors, which can ensure all-weather, all-day stable work.
2) Traffic diversion control
One of the biggest advantages of pedestrian and vehicle diversion radar is the ability to distinguish between people and vehicles, so as to accurately control the opening and closing of the door. For example, the system can be set to open the door only when the vehicle enters, while pedestrians enter by other means (such as independent access control systems). This separation of pedestrian and vehicle traffic can effectively improve the efficiency of access and enhance safety.
3) Non-contact detection
The radar sensor does not need to be in direct contact with the object to detect the object, avoiding mechanical wear and tear, pollution and other problems, compared with traditional photoelectric sensors or contact sensors, lower maintenance requirements, longer service life.
4) Strong adaptability
The radar sensor adapts to a variety of complex environmental and climatic conditions, such as smoke, dust, rain, snow, haze and other weather factors have less impact on its work, which makes it still be able to operate efficiently in outdoor or harsh environments.
5) High Passing Efficiency
The radar sensor can quickly respond and initiate the opening and closing of the door, which greatly improves the passage efficiency, especially in the high-speed access to industrial doors or storage doors and other places, it can shorten the waiting time and improve the work efficiency.
6) Energy saving and safety
Through intelligent radar sensor control, the door will only open and close when necessary, effectively reducing energy consumption. Moreover, the radar can accurately judge the distance and speed of vehicles and pedestrians to avoid false triggering and increase safety.
7) Easy installation and commissioning
Radar sensor installation is relatively simple, usually need to be installed on the top or side of the industrial door, and does not require complex external sensor accessories. Debugging is also relatively convenient, and has a certain degree of flexibility to adjust the sensing range and sensitivity according to the actual situation.

3. Safety Light Curtain

Working Principle

The light curtain system consists of two main parts:

• Emitter: Usually contains a set of infrared emitters that emit a beam of light through infrared or laser light.
• Receiver: contains a receiver corresponding to the emitter, which receives the beam of light emitted from the emitter.

These two parts of the device are usually installed on both sides of the industrial door, forming a ‘grating’ along the height of the door. When the door is activated, the transmitter continuously emits infrared signals, which the receiver receives and converts into a digital signal. If any object or human body enters the beam, it interrupts the beam and the receiver immediately transmits the information to the door control system, which triggers a safety response, such as stopping the door's operation or reversing the activation of the door to prevent entrapment.

Key Steps:

1. Beam transmission and detection: the light curtain transmitter continuously emits infrared beams to the front, the receiver receives and monitors the status of these beams in real time.
2. Interference detection: If the beam is blocked by an object (e.g. a person or an obstacle), the receiver detects an interruption of the beam and transmits a signal to the door control system.
3. Triggering of safety measures: The system takes safety measures in response to the interrupted signal, usually by stopping the door's action or reversing the door's operation (reverse movement) to ensure that no entrapment or other safety incidents occur.

Advantages of light curtain

1) Real-time protection

The light curtain system is able to detect obstacles in real time by constantly scanning the path of the door and react immediately to avoid pinching accidents. The reaction speed is usually so fast that beam interruptions can be handled within milliseconds, ensuring safe opening and closing of industrial doors.

2) Non-contact protection

Light curtains detect the presence of objects or people through non-contact means, avoiding the mechanical failure or wear and tear problems that may be associated with traditional contact protection devices (e.g., mechanical stops, buttons, etc.). Light curtains reduce the risk of maintenance and failure while protecting personnel.

3) High Sensitivity and Reliability

The light curtain system is able to respond to very small objects (such as personnel's fingers, part of the equipment, etc.), high sensitivity, and can adapt to a variety of complex environments. Even in low light or dusty environments, the light curtain can still work reliably to ensure safety.

4) Preventing Misuse

As the light curtain can intelligently judge whether there are objects blocking the path of the door, it can effectively prevent misoperation. The operation of the door no longer relies on manual judgement, the system can automatically respond according to the actual situation, to avoid the safety risks caused by human error in judgement.

5) Compliance with safety standards

As a safety protection device, the light curtain usually complies with the relevant international safety standards, such as IEC 61496 and EN 61496, which specify the safety performance requirements of the light curtain system to ensure its effectiveness and reliability in a variety of industrial applications.

6) Flexibility and Adaptability

The installation position of the light curtain is flexible, and the height and angle can be adjusted according to the size of the industrial door and the need of the doorway. It is not only suitable for vertical lift doors, but also for sliding doors, speed doors and many other types of industrial doors.

7) Reduce manual intervention and cost

The light curtain system reduces the need for manual intervention, such as manually checking whether the door is completely closed or manually operating the access control system, through automatic detection and control, thus reducing the cost of manual management.

8) Suitable for various environments

Light curtains can still work stably in harsh environments, adapting to a variety of industrial environments, including high temperature, low temperature, high humidity, dust and other environmental conditions. This makes the light curtain system an ideal choice for various industrial doors.

4. Push button

Working principle

The working principle of a system for a push-button opening industrial door is very simple and usually consists of three core components: the push-button, the controller and the motor drive system:

1. The button triggers a signal: the button can be a separate physical switch, when the button is pressed, the circuit inside the button closes, sending out a signal. Push buttons are usually divided into two types:
   • Normally open button (NO): when the button is not pressed, the circuit is open; when the button is pressed, the circuit closes and the signal is passed to the control system.
   • Normally closed pushbuttons (NC): when the button is pressed, the circuit is closed; when the button is released, the circuit is broken and a signal is generated.
2. Signal transmission to the controller: when the button is pressed, the circuit signal is transmitted to the industrial door controller. The controller receives the signal and judges whether to start the switching action of the industrial door.
3. Controller output control signal: the controller through the relay or direct output control signal to the door motor, drive motor start, and then open or close the door.
4. The motor operates the industrial door: after the motor receives the signal, it will start the corresponding action, such as opening the industrial door, closing the door or performing other operations.

Advantages of push-button opening industrial doors

1) Simple and intuitive

The operation of push-button operated industrial doors is very intuitive, the user only needs to press the button to activate the door opening and closing, without the need for complicated operating steps. This is very convenient for some places where manual control of the door is required.

2) Low cost

Push-button control systems have lower hardware costs and are cheaper to install and maintain than automatic sensor systems or complex remote control systems. Pushbutton systems are an affordable option for users with limited budgets or small businesses.

3) Safe and Reliable

Pushbutton systems are relatively simple, less prone to malfunction and more reliable in operation. In some environments (e.g. food processing, pharmaceutical factories, etc., where high standards of hygiene are required), push-button systems do not require complex sensors and electronic components, avoiding the safety hazards that can be associated with other systems.

4) Easy to control

Pushbuttons can be installed on the outside of the door, inside, at the operating desk, etc., and can be controlled by staff at different locations as required. This approach is suitable for many application scenarios that require manual opening and closing of the door, such as workshop access, warehouse handling, and so on.

5) Higher Flexibility

The button system supports a variety of control methods, such as:

• Single button control: one button is used to open or close the door.
• Dual-button control: one button for opening and another for closing. This prevents misuse and increases safety.
• Emergency Stop Button: In the event of a malfunction or emergency, use the Emergency Stop Button to immediately interrupt the operation of the door, ensuring the safety of personnel.

6) Low Maintenance Costs

Pushbutton systems are simple in structure, with fewer electronic components reducing the likelihood of system malfunction and making maintenance relatively low. Usually only need to regularly check the function of the button and clean the contact points, maintenance costs are low.

7) Highly Applicable

Push-button control systems can be applied to many different types of industrial doors, including sliding doors, swing doors, rolling doors, etc. Whether it is an internal or external door, simple and effective control can be achieved.

8) Increased safety

In some industrial locations, in order to avoid the potential safety hazards that may be associated with the automatic opening of a door, manual operation using a push button can ensure that the door is opened in a safe manner. For example, in the absence of personnel, the door is less likely to open due to false triggering, thus avoiding unnecessary safety risks.

5. Remote Control

Working Principle 

The system for remotely opening industrial doors is based on wireless communication technology, usually using radio frequency (RF) technology or infrared (IR) technology to transmit control signals. The system consists of three main parts: the remote control, the receiver and the motor control system of the door.

Main working steps:

1. The remote control transmits the signal:
   • A remote control is usually a small handheld device that sends a wireless signal of a specific frequency or code when the appropriate button is pressed.
   • Radio frequency remotes (RF remotes) use radio frequency waves (e.g. 315 MHz, 433 MHz, etc.) to transmit signals.
   • An infrared remote control (IR remote control) transmits signals via infrared wavelengths, but it usually requires a shorter operating distance and is limited by straight line-of-sight.
2. Signal reception:
   • The receiver installed in the industrial door receives the signal from the remote control, decodes it and determines whether it is a valid command.
   • The receiver is usually connected to the controller and transmits the control signal to the motor control system of the door after receiving the valid signal.
3. The door's control system executes the command:
   • According to the received signal, the control system executes the corresponding action (open, close, stay, etc.), which in turn drives the motor of the industrial door to start operating.
   • Once the motor is activated, the door starts to perform switching actions until the set position or action is reached.
4. Feedback and confirmation:
   • In some advanced remote control systems, the receiver may provide feedback on whether the remote control's commands have been successfully received or the status of the door (open, closed) by means of lights, sounds, etc.
   • This feedback mechanism enhances the reliability of the operation and reduces the possibility of misoperation.

Advantages of opening industrial doors remotely

1) Remote Operation

One of the biggest advantages of remote-opening industrial doors is that they can be operated remotely. The operator can stand far away from the industrial door and control the opening and closing of the door through the remote control, without having to walk to the door himself. This remote control greatly improves efficiency, especially in locations that require frequent access.

2) Improved efficiency

Remote control systems can greatly reduce the need for human intervention, making the opening and closing of doors faster and more efficient. Staff can easily operate the door from a distance without having to stop what they are doing or leave their current task.

3) Time saving

Remote control operation is usually done with a single button and does not need to be operated by other means (e.g. buttons, sensor systems, etc.), which saves a lot of time. This is particularly convenient in environments where access is frequent, such as garages, logistics centres and warehouses.

4) Enhanced Security

Remote controls often use encrypted wireless communication signals (e.g., rolling code technology), reducing the risk of signal tampering or theft. In addition, the remote control can be operated in a more covert manner. In areas where high security is required, only authorised personnel can operate the door opening, preventing illegal entry by outsiders.

5) Flexible operation

The use of remote control is very flexible, personnel can control the door opening and closing anytime and anywhere, especially suitable for factories, warehouses and other scenarios, which can be controlled in a position far away from the door, avoiding direct contact between personnel and the door or movement. For example, forklift drivers do not need to get out of the car to operate the door to open and close, to keep the work flow.

6) Adaptation to complex environments

Remote control systems usually have strong anti-interference ability and are not affected by environmental factors such as light, dust and humidity. Even in bad weather conditions, the radio frequency remote control can work stably, strong adaptability.

7) Easy installation and maintenance

Compared with other types of automatic control systems, the installation process of the remote control system is relatively simple and does not require complex wiring and sensor deployment. During maintenance, the inspection and replacement of remote control and receiver are also easier, usually only need to replace batteries or check for signal interference and other problems.

8) Suitable for wide-area operation

For scenarios where multiple doors need to be controlled, the remote control system can control the opening and closing of multiple doors with the same remote control. Through the setting of the receiver, it is possible to achieve the control of different doors by different remote controls with different frequencies, which is suitable for environments such as large-scale industrial parks, storage centres, etc., where multiple doors need to be operated.

9) Enhanced Convenience

The remote control is compact and easy to carry, and can usually be placed in a car, office or staff's toolkit. There is no need to walk near the door or press buttons or touch sensors, it is very convenient to press the remote control directly to operate.

10) Versatility

Some advanced remote control systems also support a variety of functions, such as unidirectional or bidirectional control of the door (opening and closing), door opening delay, door status monitoring and other functions, which enhance the diversity and flexibility of control.

6. RFID reader

Working Principle 

RFID technology identifies objects through radio frequencies.RFID readers and tags (usually IC cards, smart cards or RFID tags affixed to objects) communicate with each other through radio frequency signals.The reader determines whether or not to allow access through the access control system by recognising the information in the tag.

Main Steps:

1. Pairing of RFID tags and readers:
   • RFID tag: usually a small electronic tag containing unique ID information. It can be an active tag (with a battery, capable of actively sending signals) or a passive tag (without a battery, powered by the reader and responding to signals).
   • RFID reader: installed near industrial doors, usually next to the door frame or on the door's control panel. When a person or object with an RFID tag approaches, the reader transmits a signal via radio waves to activate the RFID tag.
2. Information is read and identity is verified:
   • When an RFID tag is near the reader, the reader activates the tag through a radio frequency signal. Upon receiving the signal, the tag responds and sends the ID information (usually a unique number) stored within the tag.
   • The reader receives the ID information and sends it to the control unit of the access control system.
3. Verification and Control:
   • When the control system receives the ID information, it compares it with a preset database to verify that the ID is a valid ID for authorisation.
   • If the verification passes, the control system sends an open signal to the door's motor controller and the door opens.
   • If the ID is not authorised or the verification fails, the door body will not open and the system may trigger an alarm or record an illegal access attempt.
4. The door body opens:
   • The control system activates the motor control system by executing the open door command and the industrial door starts to open until it is fully opened or reaches the preset position.

Advantages of RFID-enabled industrial doors

1) Improved Security

RFID technology itself has a high level of security. Each RFID tag usually has a unique identifier (ID) and can be encrypted to prevent the data from being forged or tampered with. Compared with traditional mechanical key or password systems, RFID access control systems are effective in preventing access by unauthorised persons.

• Anti-counterfeiting and anti-copying: RFID tags usually contain encryption technology or dynamically changing passwords at the time of manufacture, making them less susceptible to copying or counterfeiting and increasing the security of the system.
• Permission Management: Different access rights can be set for different personnel to achieve precise control. For example, only staff in a specific area can open a specific industrial door.

2) Fast and Convenient

RFID system does not require physical contact, staff or vehicles just need to RFID card or tag near the reader, the system will be automatically recognised, without the need to insert a card or enter a password. For industrial doors that need to be opened frequently, RFID systems can greatly improve efficiency and speed.

• Contact-free identification: through the radio frequency identification, without the need to insert the card or press the button, the operation is more simple and fast.
• Improve access efficiency: no need to wait in line, especially suitable for logistics centres, factories and large warehouses to improve access efficiency.

3) Remote identification

Compared with other types of access control systems (such as magnetic stripe cards, bar codes, etc.), RFID readers have a strong long-distance identification capabilities. Depending on the type of tag used, the recognition distance of RFID can range from a few centimetres to tens of metres. This makes RFID ideal for vehicle access management, especially in large car parks, warehouses and other environments.

• Long-range identification: For example, vehicles can be equipped with RFID tags that are automatically recognised by the reader and trigger the opening of the door over a long distance, avoiding the hassle of the driver getting out of the car or parking.

4) High durability and adaptability

RFID tags and readers usually have high durability, can be in harsh environments (such as high temperature, high humidity, dust, oil and other environments) stable operation. Environmental conditions in industrial sites may have an impact on other types of access control systems, but RFID systems are more adaptable to the environment.

• Waterproof and dustproof: Many RFID tags are designed to be waterproof and dustproof for outdoor or harsh environments.
• Strong anti-interference ability: RFID systems are more resistant to electromagnetic interference and can work stably in complex environments.

5) No contact, reduce wear and tear

As the RFID system does not require contact, there is no need for mechanical contact parts (such as card slots, keyboards, etc.), which reduces wear and prolongs the service life of the equipment. Particularly suitable for industrial or heavy doors that need to be opened frequently.

• Reduced failure and maintenance: Since there is no plugging, unplugging, or pressing action, the RFID system is more durable, reducing common mechanical failures and maintenance costs.

6) Intelligence and Scalability

RFID access control systems are often able to integrate with other intelligent systems (e.g. surveillance, alarms, access logging, etc.) to provide additional functionality and data analysis. For example, it is possible to record information such as the opening time of each door and the identity of the personnel, which can be used for later data analysis or security audits.

• Can be integrated with other systems: For example, the RFID system can be combined with a monitoring system to automatically trigger an alarm in the event of unauthorised access and record access logs for security management.
• Flexible scalability: The RFID system can be easily expanded to support more access control points and flexibly configure permissions and management functions as needed.

7) Applicable to a variety of application scenarios

RFID open industrial doors are suitable for a variety of environments, especially high security, the need for efficient access to the premises. Typical application scenarios include:

• Factories and workshops: used to control the access rights of different areas in the factory, to ensure production safety.
• Logistics warehouses: used to control the entrance and exit of goods in warehouses, effectively improving logistics efficiency and safety.
• Car parks and large garages: Vehicles can be equipped with RFID tags to automatically identify and open doors, avoiding manual intervention when parking.
• Hazardous material storage area: In high-risk places such as hazardous material storage and chemical storage, RFID technology can restrict the access of specific personnel to ensure safety.