Does the turnstile support automatic opening in case of power failure?

一, Technical principle: two guarantees for electronics and machinery
The rotary gate's automatic power-off opening function is made possible by the coordination of its mechanical structure design and electrical control system. This makes sure that the channel can still stay in a safe passage state even if the power goes out.
1. Technology that turns off and opens the power mechanically
By using a pure mechanical structure, the gate rod can be unlocked automatically when the power goes out. The mechanical energy that was saved is released when the power goes out using the principle of kinetic energy conversion to do this. One example is the 120-degree full-height rotary brake that Chuangxintong Technology made. It has a spring energy storage device built into its action. When a warning for a power outage is received, the spring releases energy that moves the brake lever to the "free passage" position. This process does not need any extra power. The good thing about this technology is that it is very reliable. It doesn't matter if the batteries run out or the circuits break; it can last for more than 10 years mechanically.

2. Electronic technology for turning off and opening the power
Use a UPS backup power source or an electromagnetic clutch to make the power go out respond. In the UPS system, the gate has a lead-acid battery that keeps the control board powered for 0.5 to 2 minutes after the power goes out. This makes the electromagnetic lock open. As an example, KeTuo Co., Ltd.'s rotary gate has a 100-240V wide voltage input system that can open the gate rod within 0.2 seconds of the power going out and allow traffic to flow both ways. When the power is turned off, the electromagnetic clutch plan removes the magnetic field, which allows for mechanical disengagement. It has a faster response speed, but the clutch wear needs to be checked on a regular basis.

3. Control of fire links
The fire warning system and the rotary gate can work together very well. When the smoke alarm or manual alarm button is pressed, the dry contact signal is sent to the control board, which then quickly opens the door. Fuzhou Ruiyuanchuang Trading Co., Ltd.'s full-height turnstile can talk to the fire control host through an RS485 bus, so it can respond to fire warning signals right away and open automatically in less than 0.3 seconds.

二, Standards for the industry: safety requirements and technical details
In case of a power outage, the emergency feature for rotary turnstiles must meet a number of national standards and industry standards to make sure the equipment works well in an emergency.

1. Rules for fire safety
The "Code for Fire Protection Design of Buildings" (GB50016-2014) says that the channel gates used to let people out of buildings must be able to open themselves when the power goes out. The National Fire Equipment Quality Supervision and Inspection Center has to certify rotary turnstiles so that the channel can be opened within 3 seconds of the power going out, even when the temperature outside is -20 ° to 70 °.

2. Rules for mechanical safety
"Safety Distance for Preventing Upper and Lower Limbs from Touching Dangerous Areas in Mechanical Safety" (GB/T 23821-2009) says that at the edge of the revolving gate wing, there should be flexible sensors that can identify things with a precision of at least 1 mm. When it senses an object, it will start rotating backwards within 0.3 seconds and sound and light alarms will go off to keep people from getting hurt.

3. How reliable electronic technologies are
The control board needs to have an average time between failures (MTBF) of at least 50000 hours in order to pass the IEC 61508 functional safety certification. With a dual circuit power supply design, the time it takes to switch between the main power supply and the UPS power supply is less than 0.15 seconds. This makes sure that control messages don't get lost when the power goes out.

三, A typical use case: full covering from business to industry
In some situations, the emergency power-off feature of turnstiles is very important, and its design needs to fit the needs of the site and safety standards.

1. Business complex
In shopping areas with a lot of people, turnstiles need to be able to handle both one-way traffic and emergency exits. For instance, a shopping center in Shenzhen uses a Koto rotary gate with a two-way traffic clock that can show the real-time number of people coming and going. When the power goes out, the gate instantly changes to free passage mode. It has a 650mm channel width, which lets 60 people leave the building every minute.

2. Center for transportation
Gates need to be very reliable in subway stops, airports, and other places. The new 120-degree turnstile at a Beijing subway station uses optical anti-tailgating technology along with face recognition and QR code dual verification to unlock the gate rod within 0.5 seconds of the power going out. This stops people from skipping tickets and getting in without permission.

3. Areas with factories and high security
Along with real name registration, places like construction sites, prisons, and other places need to be controlled. Fuzhou Ruiyuanchuang Trading Co., Ltd.'s full-height turnstile can work with the real name system on the building site and can manage attendance by looking at your face. If the power goes out, the gate immediately goes into mechanical mode. The door wings can turn freely 360 degrees to make sure that people can get out quickly in an emergency.

四, Suggestions for selection: technical factors and a review of suppliers
When choosing a rotating gate with an emergency power-off feature, you should carefully consider three things: the technical specs, the reliability of the brand, and the service provided after the sale.

1. The main factors
Power outage response time: give priority to goods that last less than 0.5 seconds to make sure that emergency evacuations go smoothly.
Channel width: Choose channels that are 550 to 650 mm wide based on how busy the place is to avoid crowding.
Protection level: The general type that can be used indoors and outdoors should have an IP65 rating and be able to handle harsh conditions.
The reset time can be changed from 2 to 60 seconds to meet the needs of different managers.
2. How to Choose a Brand
Suppliers who have passed both the ISO9001 quality management system certification and the national fire product certification should be given more attention. Companies like Chuangxintong Technology and Ketuo Co., Ltd. have used their products on many well-known business projects, like Vanke and China Resources, so they have a lot of case experience.

3. Service after the sale
Check how quickly the seller responds and how many spare parts they have on hand. Mendao Baifenbai and other maintenance platforms offer on-site services every four hours, including in first-tier places like Beijing and Shanghai. This can lower the chance that equipment will break down.

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