Biometrics technology is the focus application in the security industry. It is far superior to traditional passwords and swipe cards in terms of technical security and market application. As applications mature and consumer awareness continues to increase, the application of biometrics will become more widespread in the future. The application of biometric identification technology in the security business area mainly includes the following types:
1. Attendance equipment
In the application of biometric identification technology, the time and attendance equipment is the first to enter the scale of production and sales, and the time and attendance system based on fingerprint identification technology has been successfully promoted with its high cost performance, convenience, and ease of use. With the rapid decline in the cost of face recognition attendance equipment and the continuous improvement in accuracy, “brushing the face†has been accepted by more and more users.
2. Physical access control products
Access control applications are one of the most basic fields of application for biometric identification technologies. The earliest commercial application examples of biometric identification technologies are almost all physical access control systems. In addition to traditional swiping authentication methods, fingerprint recognition is the most popular biometric identification technology. With the rapid decline in the cost of facial recognition access control products and the continuous improvement of experience, it has a place in the mid-to-high end market. For high-level security sites such as banks and government agencies, the finger vein and iris recognition technologies with higher safety have greater application space. Overall, access control products occupy the second largest share of domestic biometric identification market after attendance products.
3. Electronic lock products
The combination of biometric identification technology and traditional electronic locks can actually be considered as an extension of the application of physical access control products. In recent years, the concept of “intelligent community†and “smart home†advocated by domestic companies is a great impetus for the promotion and application of such products.
4. Video surveillance system
With the continuous deepening of the construction of “Safe City†and “Safe Communityâ€, the application of video surveillance systems is no longer limited to routine post-mortem traceability, raising new demands for pre-existing personnel identity information acquisition and risk event warning. More and more video surveillance systems will embed face recognition algorithms to identify people within the surveillance screen and implement various types of business applications through system linkage. For example, when the system is identified as a legal person, linkage is opened to access control, personnel channels, etc. When a blacklisted person is identified, the linkage background generates an alarm.
Boiler Air Preheaters
Air preheater is one of the most important accessories in modern boilers. Air preheater is commonly found in all modern boilers. To increase the efficiency of the boiler accessories like air preheater is used in the boilers.
Types of air preheater in a boiler
The air preheaters are classified into two types based on their features and construction. These two types of air preheater are
Recuperative or Tubular type air preheater
Regenerative or Rotational type air preheater
Recuperative or Tubular type air preheater is further classified into two types, they are
Horizontal tubular type
Vertical tubular type
Regenerative or Rotational type air preheater is also classified into two types they are
Rotating baskets (Ljungstrom)
Rotating hood (Rothemuhle)