How to remotely control the opening and closing of turnstiles in shopping malls?

一, Technical Architecture: A Layered Collaborative Intelligent Control System
The current rotary gate remote control system uses a "cloud edge end" three-level design to get real-time information about the status of equipment and quickly respond to commands.
Edge computing layer: an industrial-level main control board, like the STM32F4 series, is installed on the gate body. It has various sensor interfaces and drive control modules. For example, the main control board of the three-wing revolving door uses an encoder (± 0.1 ° accuracy) to collect the angle of the door wings in real time. It also uses infrared sensors (0.3–3m detection distance) and pressure sensing strips (5N sensitivity) to build a three-dimensional spatial protection system.
Network transport layer: uses a LoRa wireless module (1.5 km transmission distance) and 4G/5G dual-mode communication. It can cache network disconnections and run instructions offline. A case study of a shopping mall in Shanghai indicates that its gate system has a consistent command response delay of less than 80ms when the bandwidth is 100Mbps. This is enough to handle the peak traffic of 60 persons per minute.
Cloud management platform: a SaaS platform built on microservice architecture that combines three main parts: device management, authorization control, and data analysis. The platform that was set up in a shopping center in Hangzhou can handle 256 gates at once. It can also change traffic strategies based on the floor, time of day, and membership level.
二, Control mode: exact adjustment to different situations
The remote control system has five common control modes that the shopping center needs to use:

1. Control of the timed plan
You can use the calendar engine to set the gate switch schedule. For example, you might have it automatically open two channels during the weekday morning rush hour (7:30–9:00) and switch to single channel current limiting around lunchtime (12:00–1:30). A shopping center in Shenzhen says that this method makes morning rush hour traffic 40% more efficient and cuts staff costs by 65%.

2. Control that happens when an event happens
When the smoke detector goes off, the gate automatically does three things because it is so closely linked to the fire and security systems:

Open the electromagnetic lock in less than half a second.
The door wing turns to the standard open position at a rate of 180 °/s.
Send an alarm signal with location data to the management platform.
3. Control of permissions that changes over time
An RFID tag-based composite authentication system (operating frequency 13.56MHz) and biometric recognition (99.7% accuracy in live detection) may do the following:

VIP customers can pass through without any problems. (1.5m distance for recognition)
Temporary visitor QR code gives access for a brief time (valid until the minute)
Blacklist staff automatically stop and set off an alarm.
4. Remote control in case of an emergency
The management terminal has a physical emergency stop button and a digital lock function that only takes one click. Data from a Chengdu shopping center drill show that it only takes 1.2 seconds to lock all the gates after an alert goes off. This is 15 times faster than doing it by hand.

5. Control based on data analysis
The system may automatically make: by collecting traffic statistics (32000 each day),

Analysis of thermal maps (0.5m² spatial resolution)
Model for predicting traffic jams (92% accuracy)
Assessment of equipment health based on the monitoring of motor current fluctuations
三,Security mechanism: a solid way to safeguard in many ways
Because shopping malls are so complicated, the system has designed a five-part security system:

Communication security: AES-256 encryption and dynamic token authentication work together to keep man-in-the-middle attacks from happening. A security test showed that the system can handle 100,000 brute-force cracking attempts every second.
Protection from mechanical damage: There is a flexible sensor built into the edge of the door wing that can detect things with an accuracy of 1mm. It will start to rotate in the opposite direction within 0.3 seconds after finding an obstacle and set off an alarm that can be heard and seen.
Managing power: Design of a dual circuit power supply (main power supply + UPS) that can run at full load for two hours. The system finished the power transition in 0.15 seconds during a power loss test, and there were no interruptions in passage.
Check the permissions: The blockchain authentication system saves all operation records (which can't be changed), which meets the standards for Level 3 of Level 2 security.
Adapting to the environment: The body of the door is comprised of 304 stainless steel and explosion-proof glass. It can handle temperatures between -20 and 60 degrees Celsius. The IP65 protection level makes sure that it works well with dust and water.
四,A common use case: From better efficiency to better experience
1. Running the most important marketing events
During sales events like Double 11, the technology can change the way people can get through the gate on the fly:

Facial recognition and QR code dual verification are used to verify membership.
Temporary channel: Use paper coupons to scan the QR code to get through
Channel for emergencies: Infrared sensor turns on automatically
A Beijing retail mall used this technique, and it made passenger flow 2.8 times more efficient and cut the number of complaints about waiting in line by 91%.

2. Management of epidemic prevention and control
Combine a temperature measurement module (with an accuracy of ± 0.3 ℃) and a health code verification system to get:

Detecting temperature without touching it (1.2 persons per second)
Automatically stop and send abnormal body temperature to the disease control system
Automatically linking traffic data to health records
3. Managing access without barriers
Set up special access for people with disabilities by:

Wireless call button with a range of 50 meters
Voice prompt system that works in eight languages
Door wing slow stop function (the time it takes to slow down can be changed)
Access Control Half Height Turnstile