CAWSmart intelligent regional automatic weather station is the first generation of Huayun Sounding Company's "Cloud + Device" system launched by China Meteorological Administration. It is specially designed and developed according to the concept of 5U (Unified standard, Unified function, Unified structure, Unified method and Unified Specification). It adopts the latest measurement and transmission technology to accomplish the automatic observation of meteorological variables such as temperature, barometric pressure, relative humidity, wind direction, wind speed, precipitation and so on. With the characteristics of low power consumption, high reliability, high precision, high stability, easy expansion and easy maintenance, it can cater to the observation requirements of existing meteorological basic variables, thus providing effective meteorological observation data for the ground observation system.
Characteristics and Applications
• The application of "Cloud + Device", Zigbee's new networking mode Zigbee wireless communication and RS485 wire communication are used in the station network to ensure timely data and reliable bidirectional transmission, accomplishing the wireless and wire complementary dual-backup station network. When the 4G wireless signal is weak, the station will take the initiative to make up the minute data transmission, to ensure data timely, completely and reliably.
• The abundance of intelligent new features improves the stability and reliability of the system.
As a new generation of self-developed intelligent integrated processor and communication networking equipment, it has a high degree of localization, rich functions, high reliability and stability. The remote management ability of the whole station equipment has been improved, with automatic remote fault location and remote program upgrading and maintenance functions enhancing.
Besides, its communication ability is improved attributing to the bidirectional communication ability of the station network and the station network. By adding smart sensors and upgrading the remote master program, it can add new smart sensors and support the exchange of smart sensor devices between different manufacturers. It provides abundant equipment status data, including intelligent integrated processor status data, intelligent sensor status data, communication signal status data, and power supply system status data, adding equipment location function based on GPS and BDS dual-mode positioning to provide accurate site longitude, latitude and altitude information.
• The accuracy of temperature and humidity measurements has significantly increased. The accuracy of temperature measurement increased from ±0.2°C to ±0.1°C. The relative humidity measurement accuracy increased from ±3% (≤80%) and ±5% (>80%) to ±2% (≤80%) and ±3% (>80%). The accuracy of barometric pressure measurement increased from ±0.3hPa to ±0.15hPa.
• Intelligent power supply system provides adequate reliable power supply.
The intelligent weather station can use solar panels to charge the battery, which can guarantee the whole equipment to work normally for at least 14 days without sunlight.
Each smart sensor is equipped with a separate lithium battery power supply, which can ensure that the smart sensor can work normally for at least 7 days in the event of a blackout in the main power supply system of the station.
The intelligent regional station can support the power supply switch control and power supply restart control for each intelligent sensor, providing the intelligent hierarchical power supply strategy for different element sensors.
Technical Specifications
| Variable | Range | Resolution | MPE |
| Temperature | -50°C~50°C | 0. 01°C | ±0.1°C |
| Relative Humidity | 5%～100% | 1% | ±2%（5%～80%） |
| Barometric Pressure | 450hPa～1100hPa | 0.01hPa | ±0.15hPa |
| Wind Direction | 0～360° | 3° | ±3° |
| Wind Speed | 0.3m/s～60m/s | 0.1m/s | ±0.3m/s（≤10 m/s） ±（0.03v）m/s（>10 m/s） |
| Precipitation | Rain Intensity 0～4mm/min | 0.1mm | ±0.4mm（≤10mm）; ±4%（>10mm） |
