What is the principle of the mobile phone signal jammer?
A common jammer is to shield mobile phone signals by emitting interference signals. By transmitting a high-power signal of a certain frequency, the surrounding electromagnetic environment is severely damaged, and the mobile phone cannot normally obtain and analyze the signal from the base station, thereby achieving the purpose of shielding the mobile phone signal.
4G cloud gateway helps urban lighting project
The lighting project is also known as the urban lighting project, also known as the urban glory project. Refers to the overall image of the city, to enhance the cultural atmosphere of the entire city, etc., for some landmark buildings, commercial streets, tourist attractions, light shows and light changes for places with high traffic.
AI intelligently controls traffic lights
Transportation is the main artery of social operation. However, at certain times and places with a large number of people and vehicles, this artery will inevitably be blocked. AI intelligent control of traffic lights (also known as "adaptive signs") can alleviate this situation.
How to choose an Internet of Things (IoT) communication module?
At present, most of the Internet of Things (IoT) nodes use ZigBee for networking, and then connect to the network through a gateway (gateway). However, the advantages of ZigBee are not obvious, and many companies are developing new modules to replace it, such as Bluetooth, WiFi, GPRS/3G/4G, etc. Can these modules replace ZigBee? What are the advantages and disadvantages of these communication modules?
How is the experience of staying in a smart hotel?
With the development of Internet of Things technology, the hotel industry is becoming more and more intelligent. Guests can easily register online and check in directly for you. After entering the hotel, you can directly enter the room and unlock it with your mobile phone WeChat.