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From 2G to 5G, mobile communication networks are constantly updated. In the beginning, mobile communication networks were born for people and tried to connect people. However, with the advent of 4G, people were not satisfied with only seeking speed, so they gradually evolved in the direction of connecting "things." With the advent of the Internet of Everything, the development of mobile communication networks has branched out. One side is big traffic, and the other is small data. Mobile broadband is on one side, and the Internet of Things era on the other.
NB-IoT is an emerging technology in the IoT field, which supports the cellular data connection of low-power devices in the wide area network. It is also called low-power wide area network (LPWAN). NB-IoT supports efficient connection of devices with long standby time and high network connection requirements. It is said that the battery life of NB-IoT devices can be increased by at least 10 years, while also providing very comprehensive indoor cellular data connection coverage.
The coverage of NB-IoT base stations is also much wider than that of traditional mobile communications. NB-IoT base stations can cover a range of 10 to 20KM, and the signal strength is greatly enhanced. We know that when mobile phones go online, mobile signals such as basements and elevators are not good. It's easy to not connect to the Internet in places. But NB-IoT will not. IoT terminals can still connect to NB-IoT base stations in these places. Create conditions for large-scale industrial interconnection.
With the advancement of science and technology and the improvement of living standards and production levels, there are more and more projects such as urban heating, greenhouses, incubation bases, and warehouses, and the collection and application value of environmental temperature and humidity data has increased unprecedentedly.
Jianda PeopleSoft RS-WS-NB-2 temperature and humidity sensor adopts NB-IOT wireless communication technology, which integrates the two functions of data and transmission, stable signal, full network coverage, NB-IoT Internet of Things card plug and play, no need The network configuration greatly reduces the deployment cost of intelligent temperature and humidity monitoring. It has the characteristics of low power consumption and wide coverage.
It is widely used in environmental monitoring, weather monitoring, smart agriculture, cold chain transportation and other environments. Compared with traditional IoT sensors, it has obvious deployment and maintenance advantages, simple construction, no wiring, and truly ready-to-install.
As a new type of integrated sensor, the NB type temperature and humidity sensor has a built-in high-quality temperature and humidity measurement unit, using highly sensitive built-in/extensive probes, with ±0.5°C (25°C), ±3%RH (5%RH~95%RH) , 25℃) temperature and humidity accuracy, accurate monitoring of air temperature and humidity in an environment of -40℃~+60℃, 0%RH~80%RH;
The place used in the industrial Internet of Things may be very harsh, so the standby time must be very long. The NB-type temperature and humidity sensor uses a large-capacity lithium battery to power the device. The default 60min upload data once, the power consumption is ultra-low, and it can be used continuously for more than 3 years ; Adopt IP65 protection grade shell, and use waterproof rubber strip inside for multi-channel waterproof treatment, even if the equipment is used in harsh environments, the measurement is still accurate. The wall-mounted installation method is simple and convenient. There is a fuse holder at the bottom. When the device is successfully installed, screw the black wire holder on and the device is in the power-on state. No wiring is required on site, saving hardware costs for powering equipment.
The wall penetration of NB-IoT signals far exceeds that of existing networks. Even in places where traditional network signals are not good, NB-IoT supports massive connections. For those with scattered distribution, long distances between each other, large area, and need to collect If there are more points, NB-type temperature and humidity sensors can be used for environmental monitoring.