With the popularity of the smart home industry in recent years, smart locks appear more and more frequently in life. At present, smart locks use non-mechanical keys as user identification technology. The mainstream technologies include proximity cards, fingerprint recognition, and passwords. Recognition, facial recognition, etc., greatly improve the security of the access control, but the premise ···

How to eliminate these hidden safety hazards has become a top priority. Using NB-IoT to locate and monitor the manhole cover can grasp the status information of the manhole cover in time, and use the NB-IoT network to send an alarm to the server to notify the manager when the manhole cover moves or is damaged, so as to maximize The degree of avoidance of injury and loss.

The most important application of 5G is the Internet of Things. 5G is an important driving force for the expansion of the mobile Internet to the Internet of Things. The reason for this is that 5G has significantly improved technology.

In fact, in the early stage of 5G technical standard formulation, industrial applications were the focus of 5G demand research. The low-latency and high-reliability uRLLC technology's delay and reliability indicators were formulated to meet industrial real-time control, unmanned driving and other applications.

In 5G, there will be network slicing for various scenarios, including slicing for the Internet of Vehicles, slicing for VR, slicing for IoT devices, etc., and the granularity of network slicing will be finer, which may appear in the future. Different service quality requires different fees.

In the 4G era, this problem was actually not solved well, and the network on the high-speed rail was intermittent. The speed of 500km/h will produce a serious Doppler effect, and there will be some challenges for frame format processing. In addition, the extremely fast speed may produce frequent handoffs, which also poses some challenges to the stability of the data link.

The full name of 5G is the fifth-generation mobile communication technology, and the 5G network and 5G frequency band are completely different things in the 5G concept. It can be said that the 5G frequency band is the basic resource of 5G communication, and the 5G network is the application basis of 5G communication.

Ethernet can be connected to the internet so that it can realize long-distance communication and realize monitoring on a global scale, which is not possible with RS485.When multiple RS485 devices are needed to connect to the computer, the traditional way is to use a multi-serial port card, that is, use the extended serial port on the computer to implement multiple RS485 serial ports.

Through DTU products, devices can transmit data wirelessly. No matter how far apart they are, they can interact and process data through a wireless network.

What is the DTU in the Internet of Things? The Chinese name of DTU is "wireless data transmission terminal". According to the different transmission methods and networks used in data transmission, DTU devices can be divided into many types, such as: 4G DTU, NB-IOT DTU , LORA DTU, GPRS DTU.