Laser based Snow Depth Sensor

1.Overview of Laser based Snow Depth Sensor

Laser based Snow Depth Sensor measures snow depth with visible laser, with a large measuring range and high accuracy, with a maximum accuracy of 1mm.Water is the foundation of the existence of various creatures on the earth.The changes and movement 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 lives and production.

The automatic snow depth monitoring station is a professional equipment for real-time monitoring of snowfall information based on years of experience in manufacturing meteorological and environmental instruments.The equipment uses laser recognition and measurement technology to overcome the shortcomings of ultrasonic waves, electromagnetic waves, weight and other types of sensors that cannot recognize snow, thereby achieving extremely high detection accuracy.By monitoring the distance at the location, the thickness of the snow is obtained and the snowfall per unit time is analyzed.This device can be an independent automatic snow depth monitoring alarm system, or it can be networked to form a diversified network monitoring.

Application scope: Widely used in many fields such as meteorological stations, port terminal safety monitoring, road traffic safety monitoring, aviation monitoring, building safety monitoring, agricultural production monitoring, hydrology and water conservancy.

2.Laser based Snow Depth Sensor laser ranging principle

The snow depth sensor uses the principle of a phase laser rangefinder to measure the depth of snow.The phase is the frequency of the radio band, which uses the amplitude modulation of the laser beam and determines the phase delay generated by the modulated light to travel to the measurement line once, and then converts the distance represented by this phase delay according to the wavelength of the modulated light.That is, the time required for light to pass through the round-trip measurement line is determined by indirect method, thereby solving the depth of snow.

3.Laser based Snow Depth Sensor technical parameters

Remark:

For different measurement targets and measurement environments, due to the excessive intensity of the ambient light, the ambient temperature is too high or too low, the target reflection is too weak or too strong, or the target surface is rough and uneven, the measurement range may be shortened or large errors are caused to the measurement results.

How it works:

Measurement method:

After first installing or moving the installation position, you need to adjust the zeroing.Press "SET" for 5 seconds to complete the zeroing.

The working principle of the sensor: data is collected once in 10 minutes if there is snow (snow depth is greater than 10mm) and data is collected once in 30 minutes if there is snow.

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