Intelligent wearable equipment (also known as wearable equipment) is the general term for the application of wearable technology in the intelligent design of daily wear and the development of wearable equipment. With the development of science and technology, wearable equipment has gradually come into the public's attention. In addition to smart glasses, wearable devices are becoming more and more diverse, including smart watches, smart clothing and so on, and penetrate into many fields such as fitness, medical treatment, entertainment, safety, finance and so on.

New energy vehicles are developing rapidly in China. Because of its high efficiency, energy saving, low noise and no pollution, it has become a new trend in the development of automobile industry at home and abroad. Although the application of power supply, drive and control system in new energy vehicles is not very different from that in industry in theory, the safety, stability and reliability of electric vehicles under different working conditions are highly demanded, which makes the selection of electric vehicles in circuit design and components more comprehensive and serious consideration. As the battery management system of the power part of electric vehicle, its safety, reliability and stability are undoubtedly the key to the performance of the whole vehicle. In this paper, the selection of pre-charging resistance in battery management system is analyzed and discussed below.

Network communication connects the isolated devices through the network, and realizes the communication between people, people and computers, computers and computers through information exchange. The telecommunication environment is developing at an alarming rate and more devices are connected wirelessly through the Internet, seamlessly bringing together personal electronic products (such as smartphones, tablets, and computers), devices in the home, automobiles and industrial equipment. Therefore, more professional quality requirements are put forward for the electronic components which must be used.

Security monitoring system is an independent and complete system, which uses optical fiber, coaxial cable or microwave to transmit video signals in its closed loop, and from camera to image display and recording. It can reflect the monitored object in real time, vividly and truly. It not only greatly prolongs the observation distance of the human eye, but also enlarges the function of the human eye. It can replace manual monitoring for a long time in harsh environment, so that people can see the actual situation of the monitored scene, and record it by video recorder. At the same time, the alarm system equipment alarms the illegal intrusion, the alarm signal generated is input into the alarm host, and the alarm host triggers the video of the monitoring system and records it.

Industrial control refers to industrial automation control, which is mainly realized by the combination of electronic, electrical, mechanical and software. That is, factory control, or factory automation control. Mainly refers to the use of computer technology, microelectronics technology, electrical means to make the production and manufacturing process of the factory more automated, efficient, accurate, and controllable and visible.

Power supply is widely used in various electronic devices or systems. The performance of power supply directly affects the normal operation of equipment or system. How to make the power supply more stable and better in application, the key is to do a good job of rectifying and filtering the power supply. Using electronic components with high quality and good stability to filter has obvious frequency characteristics and noise absorption ability. Purchasing ideal electronic materials for power supply has become an important decision-making element.

Digital products generally refer to MP3, U disk, smart phones, digital cameras / cameras / scanners and other machines that can operate through digital and coding and can be connected to computers. For digital cameras, besides lenses and sensors, image processors are also crucial. Photosensitive elements are the core of digital cameras and the most critical technology.

Household appliances, referred to as household appliances, refer to devices driven by electrical energy (or mechanized action), which can help to perform household chores, such as cooking, food preservation or cleaning, in addition to the family environment, but also can be used in the company line or industrial environment. Basically, household appliances are divided into large-scale appliances (white appliances, black appliances) and small appliances. 报错