Laser snow sensor

1. Overview of laser snow sensor

The laser snow sensor is also called the laser snow sensor and the snow sensor. The laser snow sensor adopts the principle of the phase laser range finder to measure the snow depth. By monitoring the distance of the location, the snow thickness can be obtained and the unit time of snowfall. Water is the foundation of all kinds of life on earth. The changes and movements of water have created our world today. Snowfall is an important part of the water cycle. Snowfall has a certain impact on the balanced development of the ecological environment and people's life and production.

The automatic snow depth monitoring station is a set of professional equipment for real-time monitoring of snowfall information launched by our company based on years of experience in manufacturing meteorological and environmental instruments. The equipment uses laser recognition and measurement technology for snow to overcome ultrasonic, electromagnetic wave, weight and other types The sensor cannot identify the shortcomings of snow, so as to achieve extremely high detection accuracy. By monitoring the distance of the location, the thickness of the snow can be obtained, and the snowfall per unit time can be analyzed. The device can be used as an independent automatic snow depth monitoring and alarm system, and can also be networked to form a diversified network monitoring.

Scope of application: Widely used in weather stations, port and terminal safety monitoring, road traffic safety monitoring, aviation monitoring, building safety monitoring, agricultural production monitoring, hydrology and water conservancy and many other fields.

2. Laser ranging principle of laser snow sensor

The snow depth sensor uses the principle of a phase laser rangefinder to measure the snow depth. The phase laser rangefinder uses the frequency of the radio band to modulate the amplitude of the laser beam and measure the phase delay caused by the modulated light traveling back and forth to the measuring line once, and then based on The wavelength of the modulated light is converted into the distance represented by this phase delay. That is, the indirect method is used to measure the time required for light to travel back and forth from the survey line, thereby solving the snow depth.

3. Technical parameters of laser snow sensor

Remark:

For different measurement targets and measurement environments, due to excessive ambient light intensity, too high or too low ambient temperature, too weak or too strong target reflection, or rough and uneven target surface, the measurement range may be shortened or the measurement results may be adversely affected. Big error.

working principle:

measurement method:

Zero adjustment is required after the first installation or after moving the installation position. Press and hold "SET" for 5 seconds to complete the zero adjustment.

The working principle of the sensor: when there is snow (snow depth greater than 10mm), the data is collected once every 10 minutes; when there is no snow, the data is collected once every 30 minutes.

Heating time in the cavity: When the temperature in the cavity is lower than 0 degrees, turn on the heating mode and heat for 5 minutes each time.