Turnstile Components

turnstile components

Last updated on: April 5th, 2022 17:45 pm

Turnstile Components:

Turnstile components: Whether it is to use or install the turnstile gate, or to make it realize the required functions, we need to have a deep understanding of the turnstile components, which can help us quickly find and solve problems. Let’s briefly introduce the turnstile components.

The turnstile gate is mainly composed of the internal structure and external structure. The outside mainly includes the chassis, wing gate, swipe cardboard, face recognition machine, scanning area, and so on. The internal structure mainly includes the machine core, circuit board, and other large and small components. Below let’s understand what’s the main components of a turnstile gate.

The turnstile gate is mainly divided into mechanical parts and control parts. The mechanical part is divided into structural frame and movement. The structure frame is used as the carrier, and the movement is mainly composed of a motor, optocoupler small board (single or double), transmission shaft, electromagnet, etc.; the gate control part is composed of the industrial main control board, transformer, storage battery, relay, air switch, etc.


The chassis is to protect the internal components such as the mechanism, control module, and so on. Can also play a supporting, aesthetic role. The main material is usually 304 or 316 stainless steel, the auxiliary material includes plexiglass, toughened glass, resin, stone or wood, etc. Material selection generally needs to consider strong, beautiful, not easy to deform, anti-scratch, anti-scratch, anti-rust, anti-corrosion, and easy to process fixed.

The usual processing procedures of the turnstile chassis shell are opening, bending, cutting, welding, grinding, and so on. The turnstile chassis box shall have a certain waterproof performance, especially the outdoor turnstile chassis.

Turnstile mechanism:

Turnstile mechanism is composed of all kinds of mechanical components (including a driving motor, reducer, etc.), which is called the mechanism of the turnstile gate and uses the mechanical principle to control the opening and closing action of the blocking body.

The key factors affecting the performance and service life of the machine include the processing technology and material of the mechanical parts, as well as the important driving motor and the matching reducer.

Drive motor usually uses DC brushless motor or DC brushless motor. The cost of a DC brush motor is low and the control technology is relatively simple, so it is widely used by domestic turnstile gate manufacturers, but the carbon brush belongs to the consumable parts and needs to be maintained and replaced regularly. The turnstile mechanism is the most important part of turnstile components.

turnstile inside motor

DC brushless motor without carbon brush, there is no loss, service life is also longer. If we want to improve the performance and service life of the machine, it is a good choice to adopt a DC brushless motor with better performance and longer service life, especially the first-line brand DC brushless motor in Europe. Its reliability and durability are not achieved by ordinary motors, but the cost is very high and the control technology is very complex.

Blocking Rod

When pedestrians are not allowed to pass, the blocking body or blocking rod will open and release.

Material selection generally needs to consider strong, can withstand a certain impact force, but its own impact force can not hurt people, weight as small as possible, beautiful, rust-proof and corrosion-proof, easy to process fixed, damage after no injury.

The turnstile gate blocking body can orderly manage the entry and exit of personnel. It plays the role of arresting when pedestrians are not allowed to pass through the pedestrian turnstile gate and will be opened and released when pedestrians are allowed to pass through the turnstile gate. The turnstile gate blocking body is generally realized in the form of a crossbar, wing door, and swing door.

The main material of the pedestrian turnstile gate blocking body is usually stainless steel, plexiglass, tempered glass, resin, wood, and other materials.

The material selection of the turnstile gate blocking body generally needs to be considered to be solid and can withstand a certain impact force, but its own impact force can not harm people. It should be as small as possible, beautiful, rust and corrosion resistant, easy to process and fix, and will not hurt people after damage.

Special patterns, characters, or prompt information can be processed on the blocking barrier body of the pedestrian turnstile gate to increase safety and aesthetics.

Turnstile Controller

Turnstile controller is the core component and important part of the turnstile gate, which uses microprocessor technology to control various electrical components and drive motors of the turnstile gate.  It is mainly used on various pedestrian turnstile gates to realize the safety management of people in and out. Through setting, it can realize the normal opening and normal closing of two-way and one-way passages. It can adjust the effective passage time, has the counting function, and has the function of a power failure and rod dropping at the same time.

Control module

Microprocessor technology is used to control various electrical components and drive motors.

In short, it is the motherboard module that controls the gate switch, normally open, normally closed, and so on. For turnstile components, the control module is an important part as well.

Microprocessors generally use single-chip computers, but if the control system is more complex, or needs to be integrated with many other systems (including ticketing system, access control system, etc.), and the response time is very high, it needs to use an ARM processor or even cortex processor with higher performance.

The simple control circuit is generally realized by the main control board, the motor control board and the auxiliary control board, and the complex control circuit (such as the subway ticket checking machine) needs to be equipped with a special industrial control computer to realize it.

Auxiliary modules

Including LED indication module, counting module, pedestrian detection module, alarm module, permission input module, voice prompt module, etc., can be selected according to the requirements of users.

LED instruction module:

Usually composed of an LED lattice or LED display screen, it is used to indicate the traffic state and direction of the turnstile gate, and some also contain prompt information such as text or pattern and welcome information.

Counting module:

For recording the number of people, can be displayed tube or display screen, which can clear and set the upper limit of the count. The counting module and the pedestrian turnstile gate form a simple turnstile counting system.

turnstile chassis

Pedestrian detection module:

it is used to identify the passing state of pedestrians, judge whether pedestrians pass legally, and judge whether pedestrians are within the movement range of the blocking body, so as to protect the personal safety of pedestrians. The performance of the detection module is very critical, which affects the effectiveness and safety of the turnstile gate.

It is mainly determined by two factors: Hardware sensor and software identification algorithm. The sensor generally adopts an infrared photoelectric switch (more common) or infrared light curtain, and the infrared photoelectric switch is divided into the opposite type used in pairs (more common) and single-use reflective; high-end turnstile gates will use more than 10 pairs of imported infrared photoelectric switches, and high-performance infrared light curtain or other special sensors will be used in special occasions.

The infrared radiation sensor is mainly used to ensure the safety of personnel passing through the pedestrian turnstile gate and not be pinched by the sudden closing of the blocking body. The safety accessories of turnstile gates mainly refer to infrared radiation sensors. Each pedestrian turnstile gate will be equipped with multiple sensors. The infrared radiation sensor is one of the most important safety parts of turnstile components.

Its working principle is as follows: the device that uses infrared to detect the object feels the signal of the measured object through the shielding of the measured object to the infrared, transforms the signal fed back by the infrared radiation sensor into the code that can be received by the pedestrian turnstile gate according to a certain law, and transmits it to the blocking body control board. The program forms an information command output through calculation and audit, which is used for turnstile gate access records and door opening. The closing command provides information that when an object is detected, the blocking body of the turnstile gate will not be closed.

In addition, the recognition algorithm is also very important. Different pedestrians have different heights, steps, and speeds, and carry a variety of sizes and positions of luggage. It is also necessary to consider the continuous passage of multiple people Front backspacing (anti tailing). In some cases, bicycle riding should be considered.

High-end turnstile manufacturers generally establish corresponding mathematical models based on a large number of experimental data and develop their own identification algorithms, which can effectively identify common traffic targets such as pedestrians, luggage, and bicycles, and the anti-tailing distance can reach within 20mm. This index also depends on the identification accuracy and accuracy of sensors According to the algorithm, the anti-tailing distance of an ordinary turnstile gate can only reach 100mm.

Alarm module:

The turnstile gate triggers an alarm in various abnormal use conditions, which are used to prompt or warn pedestrians, managers, and maintainers. These conditions include illegal traffic, abnormal gate, self-examination of power on, etc. The alarm methods include buzzing (more common), lighting, voice, etc. (can be used synthetically).

Voice Prompt Module:

The voice prompt here is different from the voice alarm in the previous alarm module, which is mainly used to assist in the information related to the pedestrian, such as the type of the ticket, the welcome information, and so on. This module is not commonly used and needs to be customized by users.

Permissions Input Module:

Pedestrians need to let the turnstile gate “know” whether they have the right to pass legally before passing, that means,” input “permission to let the turnstile gate judge whether it can be released. There are many kinds of input methods, such as contactless IC card swipe mode, biometric identification, password input, coin input, and so on. There is also a simple way to press a direct button to pass. The module is generally combined with an access control system or ticketing system.

Integration modules:

The common turnstile gate is integrated with the access control system, using the access control controller of the access control system as the control module of the passage machine. It is used with the card reader (IC card, second-generation card, fingerprint, finger vein, face, iris, etc.), which can greatly expand the application scene of the channel gate and meet the relevant needs of customers.

turnstile wiring diagram

Above is all about turnstile components. Of course, this is just a general explanation. The specific details of turnstile components must be more complicated. If you have any problems with the composition of the turnstile gate, or you want to customize or purchase a turnstile gate, you can contact us through the what’s app button below, and we are happy to solve any problem.

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