Basic knowledge of access control

Basic knowledge of access control

Q: What are the standards for access control products?

A: Standards that should be followed for access control and smart products include "Preparation of Safety Precautionary Project Cost Estimates" GT/T70-94, "General Graphics Symbols for Safety Precautions System" GT/T74-94, and "Safety Prevention Engineering Procedures and Requirements" GT /T75-94, "Intelligent Architectural Design Standard" DBJ08-47-95, "High-rise Civil Building Design Fire Prevention Code" JGJ/T 16-92, "Civil Building Electrical Design Specification" (JGJ/T16-92), "Electrical Specifications for construction and acceptance of installation installations (G8J32-82), Fire Protection Code for Building Design and other related standards.

Q: What are the communication protocols for smart devices?

A: RS232, RS485, RS422, WIEGAND, ABA, TCP/IP, MODEM, GPRS, etc.

Q: There are several types of control modes for access control?

A: Human body infrared sensor, human radar sensor, magnetic stripe, RFID card, biometrics, telephone handset control, power remote control, etc.

Q: What kind of electronic lock?

A: Magnetic locks, electric plug locks, electronic locks, electric locks, shear locks, drawer locks, and so on are all used in the market.

Q: The choice of power?

A: The selected power supply for the access control is preferably a linear power supply with sufficient current strength, which requires good voltage stability and clean filtering.

Q: The basic configuration of the access control system?

A: access control machine, access control power supply, electronic lock, exit button, electronic lock bracket, wire rod, communication converter, etc.

Q: What is the difference between WG and 485?

A: WG is a one-way communication mode, 485 is a two-way communication mode, and the communication distance of 485 is relatively long;

Q: What is the difference between 485 and TCP/IP?

A: 485 is a broadcast mode, TCP/IP is an interactive communication mode, and the communication speed of TCP/IP is faster, but the communication distance is shorter;

Q: The security problem of multi-gate controllers?

A: The selection of the multi-gate controller should be from the controller and the terminal access control whether there is a function that can still be used for emergency work offline;

Q: The choice of wiring method?

A: The general controller uses the WG method to centrally output the mode of the electric lock control signal, but the wiring is complicated and the overhaul is difficult. The wiring using the 485 method is simple and easy to overhaul.

Q: The processor's bit number problem?

A: 8-bit processors can only be applied to about 50,000 access control systems, while 32-bit processors can use more than 150,000 people.

Q: What is the difference between ID and IC?

A: The ID card is read-only, and the IC card is readable and writable. The IC card is generally used in a charging system.

Q: What is the difference between contact and non-contact?

A: Contact IC cards refer to chip cards of public telephone cards. Non-contact IC cards refer to Chinese citizenship IC cards, city transportation cards, etc. Non-contact IC cards are better than contact IC cards, of course. Have to distinguish between use and use of the environment.

Q: What is the remote control solution?

A: The best way to use remote control is to use the remote fixed IP method. Of course, you can also choose the remote modem method. The use of dynamic IP is more troublesome. At present, many systems do not have such functions.

Q: How to solve the problems of blackout door opening and access security?

A: The fire protection requirement of the electronic lock is that the power failure must be turned on, just in case. In the daily selection, backup access power and electronic lock with mechanical lock can be selected.

Q: What are the points of attention when building the access control project?

A: Pay attention to the size of the door joint, the quality of the floor spring, the mounting position of the bracket, the excavation level of the lock hole, the match of the material of the door frame door leaf and the lock type, the difference between the double door and the single door, single door and double door The equipment configuration of the door, the safety and concealment of the cabling, the location of the access control power supply, the selection of the door closer of the fire door, the selection of the access control mode, the selection of the exit button, and the matching of the doorbell.

Q: Principle of fingerprint recognition?

A: Each person's skin texture including fingerprints differs in patterns, breakpoints, and intersections, that is, they are unique and remain unchanged for the rest of their lives. By relying on this uniqueness and stability, we can associate a person with his fingerprint. By comparing his fingerprint with a pre-saved fingerprint, he can verify his true identity.

Q: How does the RF card work?

A: Radio frequency identification technology RFID (Radio Frequency Identification Technology) is a non-contact automatic identification technology. It automatically identifies target objects and obtains relevant data through radio frequency signals. The identification work can work in various harsh environments without manual intervention. Short-range RF products are not afraid of harsh environments such as oil stains and dust contamination, and can replace bar codes, such as tracking objects on the factory's assembly line. Long-range radio frequency products are mostly used for traffic, and the recognition distance can reach several tens of meters, such as automatic charging or identification of vehicle identities.

Q: What is the difference between domestic and imported brands?

A: Relatively speaking, the current level of smart technology is not wide at home and abroad. Domestic brands are inferior in quality, function requirements, product appearance texture, and system flexibility. Of course, domestic products have also made some progress in recent years. Also aware of the importance of quality, etc., it is recommended that users choose on-demand or blindly choose imported brands.

Q: Introduction to the Taiwan Access Control Market?

A: Taiwan's access control accounted for 60% of the world's access control market. The market focus on each of the many brands in Taiwan has led to a poor understanding of them in the * region. The best-selling products in Southeast Asia, Hong Kong, Macau, Taiwan, and Europe and the United States are not necessarily It is known.

Q: What is the purpose of the device's anti-clocking function and self-checking function?

A: If the access controller crashes, it will make the user unable to open the door or close the door, causing great inconvenience to the customer. At the same time, it also increases the maintenance and maintenance costs of the engineering company. The access controller must install a reset chip. Or use the CPU with reset function. At the same time, it must have self-test function. If the circuit crashes due to interference or abnormal conditions, the system can self-test and start automatically in an instant.

Q: What are the relevant certifications required for access control products?

A: As far as industry requirements are concerned, the current China* does not mandate that access control products must be sent for inspection. However, the implementation of large-scale system projects requires domestic MA certification and international CE certification.

Q: Reader compatibility issues?

A: Some controllers claim to be compatible with readers in various formats, such as 485 format, ABA format, and wiegand 37-40 format readers. In fact, it is not necessary, although these formats have some advantages in the local area. Does not comply with international standards, causing problems for future upgrades, capacity expansion, and anti-jamming. Our adherence to practicality, stability, and compliance with standards is the best principle. It is recommended that you only need a card reader that complies with the international standard of wiegand 26bit. In addition, 90% of imported access controllers comply with this standard.

Q: The more expensive the better?

A: Of course not, the price is very high. Obviously, the market share will be relatively low, the number of users is also very low, the quality of the product must be concluded by the user, the user volume is low and the number of tests by the market naturally Low, not necessarily the best product.

Q: The matching of electric locks?

A: According to the material of the door leaf and the door frame, the direction of opening the door, the installation habits, etc. to match.

Q: The choice of imported locks and domestic locks?

A: Imported electric locks are too expensive, and the purchase price must be more than one thousand pieces. There are no two thousand pieces of them sold in the hands of users. Although the real import electric locks, the technology is relatively mature, the product repair rate is low, but the service is still Once there is a problem, there are many reasons why foreigners are at a loss to say that your electricity is unstable in China. It is even more troublesome. I suggest that you still buy homemade locks. The prices are affordable, and most of them are produced in Taiwan or integrated into Taiwan. The manufacturing process (Taiwan is the main OEM base for foreign electric locks) and quality standards, and the difference is not much worse.

Q: The ultimate winner of smart card equipment products?

A: The application of a smart card device in a region generally starts with attendance, then charges, and finally it is the access control. Access control is the final winner in the smart card device market, because its demand is the largest; and the current access control system has gradually been monitored. Systems, anti-theft alarm systems, and so on.

Q: Is the identity card, city card (bus card, etc.) common with the access control card?

A: It can be common. At present, the public transport cards of all cities use Philip's chips, which are the same as the current access control products. The chip used for the ID card is a domestically-defined standard. Currently, it is not yet fully open. day.

Q: What are the broad applications of radio frequency technology?

A: The level of application is extremely wide. It can be used for traffic supervision of automobiles, trains, etc., automatic toll collection system for highways, parking management system, article management, production line automation, safe access check, storage management, animal management, vehicle security and many more. However, far more than that, RFID applications are still emerging. Experts expect the RFID market to grow 255% by 2010 and the global market to reach US$300 billion. According to investigations by survey agencies, the RFID market in Europe has grown rapidly, reaching US$4.5 billion in 2008; Singapore will use this technology in manufacturing, logistics, retail, infrastructure and pharmacy industries in 2006. Up to 10 million yuan; China needs more than 3 billion electronic tags, its application prospects are very broad. According to the survey results, 70% of the large companies with annual sales of more than US$5 billion have stated that they have formulated RFID plans and will implement them in the next 18 months; 25% of the companies stated that they will invest this year. $500,000 to $100 spread RFID technology.

Q: So many brands, who is it?

A: Choose the right one. According to the end user's needs (including system requirements, financial capabilities, security needs, application requirements, image requirements, etc.) to select the right product.