Can the turnstile be linked with the LED guidance system?

一,Technical principle: a multi-level intelligent linkage system that works together
The turnstile and the LED navigation system are connected by a four-tier design called "perception transmission processing display." By combining the Internet of Things, edge computing, and artificial intelligence in a profound way, devices may connect to each other without any problems.
1. Perception layer: collecting data from several sources
The rotary gate has a network of high-precision sensors, which include:

Optical sensor: monitors the angle of the gate wing (± 0.1 ° precision) and gives real-time information about the gate's status;
Pressure sensor: keeps an eye on how many people are in the channel (sensitivity 5N) to stop tailgating and pinching accidents;
An RFID scanner can identify people who are passing by (up to 1.5 meters away) and help manage member permissions.
The LED guidance system uses cameras and infrared sensors to collect data on the movement of passengers. It then combines this data with records of traffic at the gates to create a live heat map of pedestrian flow. The Xincai Technology LED panel on Shenzhen Metro Line 3, for instance, can show the congestion index of each channel in real time, helping commuters choose the best route.

2. Transport layer: A communication mechanism with low latency
The system uses a LoRa wireless module (with a transmission distance of 1.5 km) and 4G/5G dual-mode connectivity to make sure that data is sent in real time. In case of an emergency, like a power loss, the gate keeps the control board powered for 0.5 to 2 minutes with a UPS power source and sends an opening command to the LED screen to make sure that evacuation routes are clear. Beijing Metro Line 7's use of this system indicates that it keeps the instruction response latency to 80ms, which is enough for peak hours when 60 people per minute need to get on and off.

3. The processing layer is where edge computing and AI decision-making happen.
The edge computing node is built into the gate body and works with the STM32F4 series main control board to process data in a specific location. If the system sees unusual traffic, like tailgating or reversing, it will turn on a red alert on the LED screen within 0.3 seconds and send alarm information to the management platform at the same time. Based on past data, the AI system used in Guangzhou Metro Line 2 can forecast when the most people would be on the train, change the material on the LED screen ahead of time, and improve the evacuation plan.

4. Display layer: Very flexible LED interactive display
The LED guidance system has a P2.5 pixel pitch design to make sure that it can be seen well from 10 meters away. The screen can flip between languages (Chinese, English, Japanese, etc.) and has a voice broadcasting feature to help older and disabled passengers. The Chengdu Metro Line 5 case illustrates that this design makes it 40% easier for passengers to get information and 65% less likely for them to complain.

二, Application scenario: Full coverage from transportation hubs to industrial parks
The connection between turnstiles and LED guiding systems has been employed in many different situations. Its design needs to fit the site's needs and safety standards.

1. A hub for subway transportation
The linking system in the subway networks of cities like Shenzhen and Beijing does three main things:

Real-time information display: The LED panel shows the train's arrival time, transfer path, and problem alerts, which helps calm passengers who are waiting.
Dynamic guidance: During busy times, the system automatically switches to "one-way traffic" mode, and LED screens tell passengers to move to idle channels;
Emergency management: In the event of a fire or other emergency, the gate will open in 0.5 seconds, and the LED screen will provide the escape path and safety prompts at the same time.
2. Business complex
The use of a shopping complex in Shanghai indicates that the linking system can make operations more efficient:

Member management: RFID tags for VIP consumers, an LED panel that shows unique discount information, and an automatic dual-channel gate opening;
Activity guidance: The LED screen will show the number of people in line and the projected wait time in real time during the promotion period. The gate will also change the pace of traffic based on the number of passengers.
Data analysis: The system gathers traffic data (32,000 each day), makes heat maps and algorithms for predicting traffic jams, and improves the layout of stores.
3. Areas with a lot of industry and security
Construction sites, chemical industries, and other areas need strict monitoring of their workers. A chemical industrial park in Qingdao has proved that the connection system can do the following:

Anti-tailgating control: A full-height turnstile with an LED screen warning and a flashing card that goes past one person to stop people from getting in without permission;
Management of real names: The gate has both facial recognition and QR code scanning. It also shows information about people and attendance records on LED screens.
Please remember that the gate in the risky area is shut and there is a warning movie on the LED screen to keep anyone from going in by mistake.
三, Standard in the industry: Two guarantees of safety and dependability
To make sure the equipment works in an emergency, the connection between the turnstile and the LED guiding system must meet a number of national and industry standards.

1. Rules for fire safety
The Code for Fire Protection Design of Buildings (GB50016-2014) says that the linkage system must meet these requirements:

Automatic opening when the power goes out: The gate opens the channel within three seconds of the power going out, making sure that people can get out.
The LED screen and gate housing are composed of flame-retardant materials (oxygen index > 28%), which have been certified by the National Fire Equipment Quality Supervision and Inspection Center.
2. Rules for mechanical safety
The "Safety Distance for Preventing Upper and Lower Limbs from Touching Dangerous Areas in Mechanical Safety" (GB/T 23821-2009) says that the system needs to be set up with:

Flexible sensor: The door wing can detect edges with an accuracy of 1mm and will turn the other way within 0.3 seconds if it sees an obstacle.
Anti-pinch design: The gate wings are contoured, and the pressure sensor strip is 5N sensitive to keep people from getting pinched.
3. How reliable electronic systems are
The control board must have an average time between failures (MTBF) of at least 50,000 hours and pass the IEC 61508 functional safety certification. The changeover time between the main power supply and the UPS power supply is less than 0.15 seconds since the design uses two circuits. This makes sure that control commands are not interrupted when the power goes out.

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