The hottest wireless sensor network technology is

Wireless sensor network technology is valued by various fields

wireless sensing is considered to be the second largest network after Interconnection in the world. With the gradual popularization of wireless sensor networks, more and more fields regard it as one of the basic technologies for future development

wireless sensor network is one of the research hotspots in the current information field, which can be used in special environments to realize signal acquisition, processing and transmission. Wireless sensor network is a new information acquisition and processing technology, which has been more and more widely used in real life

sensor nodes can continuously carry out data collection, event detection, event marking, position monitoring and node control. These characteristics and wireless connection methods of sensor nodes make the application prospect of wireless sensor networks very broad, which can be widely used in environmental monitoring and prediction, health care, smart home, building condition monitoring, complex machinery monitoring, urban transportation, space exploration, large workshop and warehouse management, as well as safety monitoring of airports and large industrial parks. With the in-depth research and wide application of wireless sensor networks, wireless sensor networks have gradually penetrated into all areas of human life and attracted the attention of industry insiders

ensure safety and smoothness in intelligent transportation

intelligent transportation system (ITS) is a new transportation system developed on the basis of traditional transportation system. It comprehensively applies information, communication, control and computer technology as well as other modern communication technologies to the transportation field, and organically combines the human and vehicle road environment. Adding a wireless sensor network technology to the existing traffic facilities will fundamentally alleviate the safety, smoothness, energy conservation and environmental protection problems that perplex modern traffic, and improve traffic efficiency. Therefore, the application of wireless sensor network technology in intelligent transportation system has become a research hotspot in recent years. Intelligent transportation system mainly includes traffic information collection, traffic information transmission, traffic control and guidance. Wireless sensor network can provide an effective means for information collection and transmission of intelligent transportation system, which is used to monitor the traffic flow, speed and other information in all directions of the road and intersection. It is mainly composed of subsystems such as information acquisition input, strategy control, output execution, data transmission and communication between subsystems. The information acquisition subsystem mainly collects vehicle and road information through sensors, and then the strategy control subsystem calculates the best scheme according to the set goals and uses the calculation method. At the same time, it outputs control signals to the execution subsystem to guide and control the passage of vehicles, so as to achieve the preset goals. Wireless sensor networks can also be used in intelligent transportation for traffic information release and electronic toll collection. Grandviewresearch, headquartered in San Francisco, said in its latest research report that it is in technical fields such as speed measurement, parking management, integrated information service platform, intelligent public transport and rail transit, traffic guidance system and integrated information platform

promote more intelligent information home appliances

the gradual popularization of wireless sensor networks has promoted the rapid development of information home appliances and network technology. The main equipment of home networks has expanded from a single computer to a variety of home appliances. The control node of smart home networks based on wireless sensor networks provides a basic platform for the connection of internal and external networks and the connection of information home appliances and devices between internal networks

embedding sensor nodes in household appliances and connecting them through wireless networks and interconnection will provide people with a more comfortable, convenient and humanized smart home environment. The remote control of household appliances can be realized by using the remote monitoring system, and the family safety can also be monitored at any time through image sensing equipment. Using sensor networks, we can establish intelligent kindergartens, monitor children's early education environment, and track children's activity tracks

the wireless sensor network uses the existing interconnection, mobile communication and informs the residents of indoor environmental parameters, home appliance operation status and other information, so that the residents can timely understand the internal situation of the home, and remotely monitor the home appliance, so as to realize the information transmission inside and outside the home. Wireless sensor network enables residents not only to monitor water meters, electricity meters, gas meters, electric water heaters, air conditioners, rice cookers, security systems, gas leakage alarm systems, outsiders intrusion warning systems, etc. at home through the browser, but also to set commands through the browser to remotely control household appliances. The wireless sensor network is composed of multiple wireless sensor nodes with the same or different functions, which monitor a kind of equipment to form a wireless sensor network. By closing and connecting to the interconnection system, a hybrid star wireless sensor network structure system model based on star structure is adopted. The sensor node is responsible for data collection and data collection of the data transfer node in the network. The module collects indoor environmental data, such as temperature, humidity, etc., and directly or indirectly transmits the data to the remote joint point by the communication routing protocol

at present, domestic and foreign researchers mainly study the low-power hardware platform design, topology control, network protocol, positioning technology, etc. of wireless sensor network nodes. Taking the sensor detecting light intensity as an example, a wireless sensor network is realized, which turns off or on the indicator light according to the light intensity detected by the sensor. In the wireless sensor network, the ordinary node sends the light intensity data it collects to the network coordinator, and the network coordinator sends the data frame containing the control variables to the node with the indicator light. At the same time, the light intensity data can also be transmitted to the computer through the serial port. The change of light intensity signal can be seen through the background software installed on the computer. By covering the light intensity sensor, the collected light intensity data can be changed. When the light intensity is relatively low, the curve decreases, and vice versa. This kind of sensor network integrates embedded technology, sensor technology and short-range wireless communication technology, and has a wide range of applications. The system does not need to change the site structure, and does not need the support of any original fixed network. It can be quickly arranged and easily adjusted, and has good maintainability and expansibility firmly around the major needs of the new generation information technology industry and high-end equipment manufacturing industry