Dag: 18 december 2023 (pagina 86)

The Internet of Things supported by the fifth-generation mobile communication system (5G system for short) will expand its access volume and coverage, and can greatly better adapt to and meet the growing operation and maintenance needs of urban rail transit.…

With the continuous development of wireless communication technology, the Internet of Things, as a major component, has attracted attention from all walks of life. This article mainly studies the development status of the Internet of Things in the wide-area wireless…

Application of 4G communication technology in telemedicine According to the latest information from Verizon, the largest wireless communications company in the United States, in September 2013, Michigan St. Clair Company developed an advanced telemedicine solution using the 4G LTE network…

4G communication technology concept The fourth generation of mobile phone mobile communications standards (4G) refers to the fourth generation of mobile communications technology. It is a broadband access and distributed network with a download speed of 100 Mbps and an…

The application of the Internet of Things has greatly promoted the development of our country’s economy, especially the promotion and use of 4G network technology, which has brought opportunities for the development of the Internet of Things technology. Therefore, the…

Based on the current LTE network construction, due to the increasing density of buildings in people’s living environment, not only will the diffraction performance of LTE high-frequency networking wireless signals deteriorate, but it will also reduce the network coverage area…

This article introduces in detail the common Wifi channel interference faults (including assisted channel interference and overlapping channel interference) in areas where APs are densely distributed. For different fault types, simulation experiments are conducted under different level environmental conditions to…

When users use 2G and 3G networks, their main requirement for network quality is whether the quality of calls is stable. However, with the popularity of LTE network technology, many network users are more concerned about the speed of network…

1. 50 pieces of electrical control knowledge 1. According to the classification of uses, low-voltage electrical appliances are divided into control electrical appliances, main command electrical appliances, protective electrical appliances, distribution electrical appliances and executive electrical appliances. 2. According to…

Capacitor is the most commonly used device in circuit design and is one of the passive components. Simply put, an active device is a device that requires an energy (electricity) source. It is called an active device. A device that…

What is breaker failure protection? When the main protection action of the faulty electrical equipment issues a trip command but the circuit breaker refuses to operate, the protection action information of the faulty equipment and the current or other information…

Siemens Profibus DP communication is often used for communication between PLC and other PLCs, remote substations, frequency converters, bus instruments and third-party DP equipment. The program is simple and the wiring is convenient. However, once the red light on the…