Motor Applications in Turnstile Gates

1. Component Overview

Turnstile gates are essential equipment for modern access control systems in public places. Their design is compact and efficient. The key components include:

• Drive Motor: Uses high-performance brushless DC servo motors or AC servo motors, featuring high torque density and fast response speed, supporting frequent start-stop cycles and rapid speed changes.
• Harmonic Reducer: Used with the motor to ensure high precision and low backlash of the turnstile arm, improving response sensitivity and control stability.
• Turnstile Arm Mechanism: Made from high-strength aluminum alloy or stainless steel, ensuring mechanical strength and durability, with precise couplings to transmit power and provide buffering.
• Sensor System: Equipped with multiple photoelectric sensors, proximity switches, and Hall sensors to monitor the position, speed, and passage status of the turnstile arm, ensuring safe operation.
• Intelligent Control Unit: Integrates advanced motion control algorithms, supports closed-loop speed and position control, and is compatible with various communication protocols for intelligent management and fault diagnosis.
• Protective Enclosure and Installation Structure: Designed with waterproof and dustproof features, meeting IP54 and above protection levels, adaptable to both indoor and outdoor environments, extending the equipment's service life.

2. Working Principle

When the access control system recognizes valid passage authorization, the control unit sends a start signal to the motor. The motor, through the harmonic reducer, drives the turnstile arm to quickly rotate to the open position, allowing passage. The motor's movement is monitored by sensors, providing real-time feedback on position and speed to ensure precise motion without any error. Once passage is complete, the motor quickly reverses to bring the arm back to the closed position. If the sensors detect any obstruction in the passage, the control system immediately executes a safety protocol, slowing down or stopping the motor to prevent injury. This system achieves a perfect balance between efficient passage and strict safety protection with a high degree of automation and intelligence.

3. Role of the Motor in the System

The motor is the core power source of the turnstile, responsible for fast start-stop cycles and stable operation. The high-efficiency servo motor ensures fast and sensitive movements of the turnstile arm, able to withstand the impact force from frequent starts and ensuring the equipment operates stably over time. The motor's high torque output enables smooth arm movement under different load conditions without lag or delay. The low-noise design provides a quiet passage experience in public environments, while excellent heat dissipation ensures that the motor does not overheat during high-frequency operation. The motor is equipped with overload protection and feedback sensors, enabling real-time torque adjustments to prevent mechanical damage caused by abnormal resistance, improving system safety and reliability. Through advanced motion control algorithms, the motor and control system achieve multi-axis coordination and precise synchronization, ensuring smooth and coordinated movements.

4. Customized Motor Solutions

To meet the dual demands of performance and safety in turnstile gates, we offer a customized solution based on the GPG-SV85 high-response servo motor. This motor, paired with a high-precision harmonic reducer, ensures low backlash, high torque output, and excellent control accuracy, handling high-frequency opening and closing actions. The motor supports mainstream industrial bus protocols such as EtherCAT and CANopen, enabling easy system integration and remote intelligent monitoring. The controller integrates multiple layers of safety protection logic, allowing real-time monitoring of motor load and position deviations, dynamically adjusting the running speed to effectively prevent the risk of injury or obstruction. The motor casing is made from high-strength aluminum alloy, with an IP54 or higher protection rating, offering excellent sealing, dustproof, and waterproof performance, suitable for use in both indoor and outdoor environments. In addition, we have optimized the energy efficiency and thermal management solutions for the system, ensuring stability and durability during long-term high-intensity operation. This custom solution not only enhances the turnstile's passage efficiency and user experience but also provides customers with a high-reliability, high-safety intelligent access solution that meets the diverse needs of smart cities and intelligent buildings.