Real-time and accurate monitoring of wind speed and direction is a core requirement in meteorological observation, industrial safety, environmental monitoring, traffic operation and maintenance and other fields. As an industrial-grade solid-state wind measurement equipment, the SW50H ultrasonic wind sensor abandons the disadvantages of moving parts of traditional mechanical sensors and relies on the core technology of ultrasonic transit time. With the advantages of no wear, high precision and strong adaptability, it has become the preferred equipment for wind field monitoring in various industries, providing reliable data support for wind condition analysis, safety warning and decision-making.
1. Core technical principles: Ultrasonic transit time method enables non-contact measurement

The SW50H ultrasonic wind sensor adopts the advanced ultrasonic time difference measurement principle to achieve contactless and accurate capture of wind speed and direction. The equipment has four sets of built-in high-precision ultrasonic probes, which are laid out in a two-dimensional plane. By cyclically transmitting and receiving ultrasonic pulses alternately, the wind field parameters are calculated using the influence of airflow on the propagation speed of sound waves. When sound waves propagate in the direction of the wind, the speed is accelerated by superimposing the wind speed, and the propagation time is shortened; when propagating against the wind, the speed is offset by the wind speed and slowed down, and the propagation time is extended. By accurately measuring the propagation time difference in the forward and reverse directions, combined with the vector analysis algorithm, the real-time wind speed value and wind direction angle can be obtained.

Compared with traditional wind cup type, wind vane and other mechanical structures, this technology fundamentally eliminates the limitation of starting wind speed and can achieve zero wind speed operation. At the same time, there are no moving parts, completely eliminating mechanical wear, jamming and freezing interference problems. The device has a built-in temperature compensation module that can correct the impact of ambient temperature on sound speed in real time (sound speed changes with temperature by about 0.6m/s/°C). With random error identification technology, it can effectively filter noise even in complex environments such as strong wind, rain and snow, ensuring the stability and accuracy of data output.

2. Product core features: dual breakthroughs in accuracy and reliability

The SW50H ultrasonic wind sensor focuses on industrial application requirements and has significant advantages in structural design, performance optimization and environmental adaptation, taking into account accurate measurement and long-term stable operation.

1. High precision, low threshold, accurate measurement

The wind speed measurement range covers 0~60m/s, and can be adapted to various wind conditions from light breeze to strong wind. The measurement accuracy reaches ±(0.2m/s±0.02×v) (v is the actual wind speed), the resolution is as low as 0.01m/s, there is no starting wind speed limit, and it can accurately capture subtle wind speed changes at the 0.01m/s level. The wind direction measurement range is from 0 to 360°, with no monitoring blind zone, accuracy of ±1°, and resolution of 1°. It supports 16 standard azimuth markers and can quickly respond to subtle fluctuations in wind direction, with response times as fast as milliseconds.

2. No consumption, no maintenance, long lifespan

It adopts an all-solid structure design and has no mechanical rotating parts, which completely avoids the hidden troubles of traditional models such as bearing wear, component jamming, ice and snow freezing, etc. It does not require regular lubrication, calibration or replacement of wearing parts, achieving long-term maintenance-free operation. The shell is made of high-quality ASA engineering plastics, which has strong corrosion resistance and anti-aging properties. It will not discolor all year round when used outdoors, and can resist erosion by ultraviolet rays, rain, snow, and sand dust. The designed service life is more than three times longer than that of traditional mechanical sensors.

3. Full scene adaptation, excellent protection

The protection level reaches IP65 and above, has good waterproof and dustproof performance, and can work stably in extreme temperature environments from -40°C to 70°C. The relative humidity is suitable for 0~100%RH (non-condensation). The probe adopts a hidden buckle design, which can not only avoid measurement deviations caused by loosening during transportation and installation, but also reduce the interference of rain, snow accumulation and natural wind obstruction on detection. Some configurations can be upgraded with a self-cleaning coating to further improve the adaptability to complex environments.

4. Multiple signal outputs, easy integration

Supports multiple types of signal output, standard RS485 communication interface, compatible with Modbus-RTU protocol, can read multi-dimensional data such as instantaneous wind speed, wind direction, average wind speed, high wind speed, wind level and equipment voltage; optional 4~20mA current signal and 0~2V voltage signal output, suitable for different industrial control systems. It also supports GPRS wireless transmission (optional) and can upload data to the cloud platform in real time through UDP protocol to achieve remote monitoring and data sharing. The minimum transmission interval is only 1 minute, meeting the needs of centralized management.

5. Low consumption, high efficiency, easy to operate

It adopts a low-power chip design, with an operating power consumption of only 70mA and a static power consumption of 45mA. It supports 7-17V DC wide voltage power supply and can be used with a solar power supply system to achieve long-term unattended operation in the field. The equipment has a high degree of integration, is lightweight, is easy to install and disassemble, and does not require complex debugging. It can automatically start measurement after powering on, and is adaptable to various installation methods such as wall-mounted and pole-mounted to meet the deployment needs of different scenarios.

3. Key technical parameters: Accurately matching diverse application requirements

The SW50H ultrasonic wind sensor has comprehensive parameter configurations and can be flexibly selected according to scene requirements. The core technical parameters are as follows:

- Measuring range: wind speed 0~60m/s, wind direction 0~360° (no blind spots at all angles);

- Accuracy and resolution: wind speed accuracy ±(0.2m/s±0.02×v), resolution 0.01m/s; wind direction accuracy ±1°, resolution 1°;

- Environmental adaptability: working temperature -40℃～70℃, relative humidity 0～100%RH (non-condensation), protection grade IP65+;

- Power supply and power consumption: 7~17V DC power supply, operating power consumption 70mA, static power consumption 45mA;

- Signal output: RS485 (Modbus-RTU) standard, 4~20mA/0~2V analog optional, GPRS wireless transmission optional;

- Structural features: ASA engineering plastic shell, snap-on probe design, light weight, easy installation, and maintenance-free.

4. Multi-field applications: realizing value from industry to people’s livelihood

With its high precision, high stability and full-scenario adaptability, the SW50H ultrasonic wind sensor has been widely used in many fields and has become a core monitoring equipment to ensure safety and improve efficiency.

1. Meteorological and environmental monitoring

It is suitable for weather stations, mobile meteorological monitoring points and environmental monitoring stations at all levels to provide accurate wind field data for weather forecasting and climate research. In the prevention and control of air pollution, wind speed and direction data can be used to predict the diffusion path and range of pollutants, providing a scientific basis for pollution source tracing and emergency control. It is especially suitable for normal monitoring of complex environments such as industrial parks and mining areas.

2. Industrial and construction safety

In scenarios such as high-rise building construction, tower crane operation and maintenance, and wind power operation and maintenance, wind speed and direction are monitored in real time. When the wind speed exceeds the safety threshold, an alarm is automatically triggered to avoid risks such as falling objects from high altitude and equipment instability. In closed or semi-closed spaces such as tunnels and factories, it can assist in regulating the ventilation system, optimize air circulation efficiency, and ensure the safety of the working environment.

3. Transportation and logistics operation and maintenance

It is used in airports, ports, highways and other places to provide real-time wind condition data for flight takeoff and landing, ship navigation, and road maintenance. During the operation and maintenance of bridges and elevated roads, long-term monitoring of wind field changes provides data support for structural stability assessment and early warning of the impact of strong winds on traffic operations.

4. Agriculture and scientific research and exploration

In the agricultural field, it can monitor micro-airflow changes in farmland and orchards, guide the direction of sprinkler irrigation and pesticide spraying timing, and reduce resource waste and environmental pollution; in agricultural scientific research, it can provide wind field parameters for research on crop pollination and the spread of pests and diseases. At the same time, it is suitable for scientific research scenarios in high altitude and remote areas. With low power consumption and strong environmental adaptability, it can achieve long-term unattended monitoring.

5. Industry value and development prospects

Currently, wind measurement equipment is being upgraded in the direction of solid-state, intelligent, and low-power consumption. As a representative product of domestic industrial-grade sensors, the SW50H ultrasonic wind sensor not only solves the pain points of high maintenance costs, frequent failures, and limited measurement accuracy of traditional mechanical sensors, but also meets the needs of digital monitoring in various industries with its multi-signal compatibility and full-scenario adaptability, and is in line with the policy orientation of "building a precision monitoring system" in the "Outline for High-Quality Development of Meteorology."

In the future, with the deep integration of the Internet of Things and artificial intelligence technology, the SW50H sensor is expected to achieve further upgrades: integrating AI algorithms to optimize data noise reduction and trend prediction capabilities, supporting multi-device wireless networking and remote operation and maintenance; expanding multi-parameter integration functions to simultaneously monitor temperature, humidity, air pressure and other indicators to build an integrated micro-climate monitoring terminal; optimizing the anti-extreme environment design to improve stability in severe weather such as typhoons and snowstorms, and continue to inject scientific and technological power into accurate wind measurement and safety management and control in various industries.