With the development of society and the progress of the times, people's demand for safety is also increasing. In the past, only the airport gates, subways and important government departments' gate safety gates are no longer limited to these places for ticket checking, but more The ground is used in residential areas, high-end office buildings, libraries, theaters, factories, exhibition centers, sports venues, tourist attractions, etc. Here is a brief introduction to the classification and purchase points of the lower channel gates:
First, channel gate classification
There are many varieties of channel gates, which can be divided into:
Wing gate (retractable speed gate), which features fast and smooth operation. It is mainly used in places where the speed of transportation is high.
Swing gate, it is a pedestrian passage control device with high safety protection level. The swing length can be customized according to the site conditions, and it is mainly used in places where people and vehicles are mixed.
Three-roller gate, which is a limit-level access control device that specializes in access control and personnel flow. Features are cheap, easy to maintain and anti-tailing.
Rotary brakes, mainly two-way agile channel control devices planned for high-level security needs, can be used for channel management under unsupervised.
The translation gate is mainly a restricted-line channel control device planned for a wide-area space, and is mainly used for indoor places.
Second, the general function of the channel gate
1. Anti-tailing function: The infrared light band detection area in the channel can adjust the switch state by software according to the customer's precision requirements. The application of the light band to meet the different requirements avoids the point-type infrared easily being polluted, affecting the shortcomings of judging reliability, and can be effective. The judges of the unread card. When the system determines that a trailing occurs, the system will react based on the position of the valid cardholder returned by the infrared detector. After the door open signal is sent, there are still some abnormal use that will trigger the alarm system.
2. Abnormal use:
(1) When the gate is closed, the pedestrian enters the channel after the authorized door opening signal is issued. Before the first safety photoelectric exploration belt passes, if the reverse infrared inspection detects someone entering, the buzzer will automatically alarm and gate. Keep it off.
(2) When the pedestrian breaks out, the pedestrian enters the second infrared sensing area. If there is no legal door opening signal, the second safety infrared sensing area detects that someone has entered, and the alarm system issues an alarm, and the door will not close.
(3) The front tailer checks the pedestrian from the first prospector to the last explorer from the first safe infrared sensor belt. The time gap is about 0.25 seconds. After the pedestrian leaves the first safe infrared sensor belt, he reads the card. In the condition that the signal is not opened, the first infrared sensing area is explored to have a pedestrian (follower), and the alarm sounds long.
(4) After the pedestrian enters the infrared sensing area, the first one detects that an unauthorized person has broken in, the gate is immediately closed, and the alarm sounds long.
Third, the channel gate purchase points
The main difference of the pedestrian channel is that apart from the difference of the movement mode of the door leaf, the products of different grades have great differences in material technology, motor drive and control system, and the product selection needs to consider various factors.
1. Personnel safety: high security personnel pass guarantee
It is mainly to understand the mechanism of the pedestrian channel products in the personnel movement track and behavior recognition detection, the anti-clamp mechanism of illegal entry personnel, and the emergency response processing in emergency situations. These aspects are also the basis for ensuring the high safety of the pedestrian channel products.
The pedestrian channel product sets a certain number of opposite detection points at different positions inside the channel. When the person passes, the limb will block the detection point, and multiple detection points form an effective recognition of the movement track and behavior of the passing person, and the pedestrian passage is based on high The tracking-type pass logic detection algorithm running in the central controller of the performance ARM9 technology realizes high-efficiency logic judgment and drives the response action of the pedestrian channel door wing. The high-end pedestrian channel products generally do not adopt the traditional point-type infrared radiation detection method. Instead, the LED high-density infrared detection light curtain is used to judge the position, state, traffic direction and validity of the authorization verification of the pedestrian in the channel, and perform calculation and analysis to make corresponding judgments. It is now a tracking-type pass detection method to protect pedestrian safety.
2, high level of security level
The greater the number of sensor points, the better the security and functionality, but the more complex the logic algorithm. In the same kind of products, high-end manufacturers use up to 16 pairs, and some even up to 20 pairs, the monitoring distance can reach 12 cm, while most of the domestic low-end products manufacturers use about 10 pairs, of which The minimum number of products is only 4 pairs.
The product's anti-pinch protection function is realized by the door unit and the traffic detection system. During the pedestrian pass, any protection sensor is triggered and the channel will be open. When the passage door is closed and the object is blocked, the door will immediately become free, thus preventing the pinch of the passer and ensuring the passage of pedestrians.
Emergency handling in the event of an emergency. The pedestrian channel equipment should reserve the fire-fighting signal. When receiving the warning signal or power-off of the fire-fighting signal, the door leaf will automatically unlock and become a free state, forming an evacuation crowd with an unobstructed access. Will not cause accidental casualties. This emergency function can also be used to set and switch the channel running status through the remote channel monitoring management system.
3. Security and security
It is mainly to understand the detection mechanism of the detection, prevention and alarm of the illegal passage of the pedestrian passage products to prevent the occurrence of personnel trailing phenomenon. The trailing detection function includes two detection methods, one is the trailing entry detection and the other is the reverse entry detection.
The trailing behavior in the trailing detection function refers to the fraudulent behavior that the person attempts to pass without legal authorization. When the authorized personnel passes the channel, they have left the safe area of ​​the channel, and the channel door will automatically close, but at the same time If an unauthorized person attempts to follow the passage, the door will block the passage of pedestrians. At this time, the channel will emit an audible alarm and an indicator light. When the authorized personnel pass the passage, they have not left the safe area of ​​the passage. At this time, the trailing personnel try to follow. Enter, because at the time of design, we consider the safety of the person. If the door is closed, it will pinch the person, so the door leaf will not be closed at this time, but the channel equipment will have an audible alarm and an indicator alarm to remind us. An abnormal situation occurred in the staff. This situation reflects the security protection capability of the pedestrian passage and the ability to protect personal safety.
4, performance security: reliable and long-lasting operational capability
It is mainly to understand the motor technology of the door unit parts of the pedestrian passage, the fault-free running time, the passing rate of the personnel per unit time, and the maintainability of the system.
In terms of guaranteeing reliability, the first is an important door unit system. The door unit drive motor of the high-end pedestrian channel product uses DC brushless servo drive technology. At present, servo drive technology is a relatively advanced motor technology. Most of the products in the market use ordinary DC motors, and the advantages of using brushless servo motors are fast running speed, no mechanical loss, accurate positioning and stable operation. The operation time of the door unit using the DC brushless servo drive technology is less than 0.8 seconds, thereby ensuring a high pass rate of 60 people per minute of the pedestrian passage. High-end pedestrian channel products generally have a trouble-free running time of no less than 3 million times.
In terms of system maintainability, high-end pedestrian channel products are generally equipped with a remote channel monitoring and management system to remotely realize real-time monitoring and operation management of the pedestrian channel operating status through the TCP/IP network. The mid-range and low-end products generally switch the operation mode of the pedestrian channel by manually switching the jumper on the control panel inside the pedestrian channel or by physically controlling the switching panel. In contrast, the WEB-based remote channel monitoring and management system can flexibly manage and monitor the pedestrian channel anytime, anywhere, without being limited by physical location.
Perforated Metal Sheet
Perforated Metal Sheet
For many, perforated metal square hole patterns are more visually appealing than round holes, a key consideration when
the aesthetics of the product are of primary importance. Additionally,
square hole perforated metal provides a larger open area.
As
a highly-accomplished wire mesh exporter, Kingdelong was established
jointly by China and South Korea in 1986, Our strategic location in
Anping County,Hebei province is only 300KM away from Beijing and
Tianjin, which offers us very competitive advantages both in trade and
logistics. Through two decades of hard work, Kingdelong company had
evolved into one of China`s largest wire mesh manufacturing
companies,Covering an area of over 200,000㎡, certificated by ISO 9001
& ISO 14001,as well as more than 450 diversified production
machines, which are either imported from foreign countries or developed
in-house.Wire mesh products find applications in a wide range of
industries, from Pharmacy to petroleum and chemical to textile.