CN109654980B - Visual snow depth measuring instrument and its usage - Google Patents

Abstract

The problem to be solved by the present invention is to accurately measure the snow depth. The visual snow depth measuring instrument includes a ruler, a visible end, and a visual circuit. The ruler is hollow, the cross-section of the ruler is rectangular, the visible end is located at the bottom of the ruler, the visible end is wedge-shaped, and the upper end is with The ruler is the same size, with a tip at the lower end. The visible end includes a vertical surface and a 45-degree inclined surface opposite to the vertical surface. The material of the vertical surface is transparent. There is a scale on the vertical surface, which is consistent with the straight edge. The scale on the ruler remains continuous. The vertical surface is used to observe the external environment and the depth of snow. There is a plane reflector on the inclined surface to reflect the vertical surface to the top of the ruler. The visual circuit includes a power supply, a switch and a light bulb. The light bulb is located Inside the viewing end, it is used to provide the light needed to observe the vertical surface and the external environment. This instrument distinguishes the dividing line between snow and the ground through the visual end and visual circuit, avoiding the measurement error caused by the traditional ruler inserted below the snow layer, with high accuracy and easy operation.

Description

Visual snow depth measuring instrument and its usage

Technical field

The invention relates to the field of snow scientific research, in particular to snow depth measurement in snow scientific data collection.

Background technique

Snow depth is an important parameter in snow hydrological models and snow quantitative remote sensing. Therefore, snow depth measurement is very important in snow scientific research.

At present, the snow layer density measurement device is mainly a ruler. The ruler is inserted vertically into the bottom of the snow to read the snow depth. Because the ruler is usually inserted into the grass layer or even the soil layer below the snow layer, it is difficult to find the dividing line between the snow and the ground. The zero mark of the ruler cannot be aligned with the dividing line, resulting in inaccurate measurement results.

Contents of the invention

The problem to be solved by the present invention is to accurately measure the snow depth.

The visual snow depth measuring instrument includes a ruler, a visible end, and a visual circuit. The ruler is hollow, the cross-section of the ruler is rectangular, the visible end is located at the bottom of the ruler, the visible end is wedge-shaped, and the upper end is with The ruler is the same size, with a tip at the lower end. The visible end includes a vertical surface and a 45-degree inclined surface opposite to the vertical surface. The material of the vertical surface is transparent. There is a scale on the vertical surface, which is consistent with the straight edge. The scale on the ruler remains continuous. The vertical surface is used to observe the external environment and the depth of snow. There is a plane reflector on the inclined surface to reflect the vertical surface to the top of the ruler. The visual circuit includes a power supply, a switch and a light bulb. The light bulb is located Inside the viewing end, it is used to provide the light needed to observe the vertical surface and the external environment.

Preferably, it also includes a lampshade, which concentrates the light of the bulb to one side of the vertical surface.

Preferably, the bulb and the bevel are at both ends of the ruler and are separated by a certain distance.

Preferably, the power supply and switch are located at the top of the ruler.

How to use the instrument is as follows:

a. When inserting the ruler vertically into the bottom of the snow, turn on the switch of the visual circuit;

b. Look through the upper end of the ruler to the bottom, find the dividing line between the snow and the ground, and note the corresponding scale of the dividing line on the vertical plane;

c. Read the corresponding scale on the ruler on the upper snow surface, and subtract the corresponding scale on the vertical surface from the corresponding scale on the ruler, which is the snow depth.

This instrument accurately distinguishes the dividing line between snow and the ground through the visual end and visual circuit, completely avoiding the measurement error caused by the traditional ruler inserted below the snow layer. It has high accuracy and is easy to operate; the lampshade will illuminate the light from the bulb. Concentrate on one side of the vertical surface, with the light bulb and the bevel at both ends of the ruler, to avoid the impact of strong reflection of light from the light bulb on observation.

Description of the drawings

Figure 1 is a schematic diagram of the overall structure of the visual snow depth measuring instrument;

Figure 2 is a schematic structural diagram of the visual end with the outer shell removed;

Figure 3 is a schematic diagram of the power supply and switch structure.

In the picture: 1. Ruler, 2. Visual end, 3. Visual circuit, 4. Vertical plane, 5. Inclined plane, 6. Scale, 7. Reflector, 8. Power supply, 9. Switch, 10. Light bulb , 11. Lampshade.

Detailed ways

Example 1

As shown in Figure 1-3, the visual snow depth measuring instrument includes a ruler, a visual end, and a visual circuit. The ruler is hollow, the cross-section of the ruler is rectangular, and the visual end is located at the bottom of the ruler. The viewing end is wedge-shaped, the upper end is the same size as a ruler, and the lower end is a tip. The viewing end includes a vertical surface and a 45-degree inclined surface opposite to the vertical surface. The material of the vertical surface is transparent and vertical. There is a scale on the surface, which is continuous with the scale on the ruler. The vertical surface is used to observe the external environment and the depth of snow. There is a plane reflector on the inclined surface to reflect the vertical surface to the top of the ruler. The visual circuit includes Power supply, switch and light bulb. The light bulb is located in the viewing end and is used to provide the light needed to observe the vertical surface and the external environment.

Also included is a lampshade, which concentrates the light from the bulb to one side of the vertical surface.

The light bulb and the bevel are at either end of the ruler, a certain distance apart.

The power supply and switch are located at the top of the ruler.

How to use the instrument is as follows:

a. When inserting the ruler vertically into the bottom of the snow, turn on the switch of the visual circuit;

b. Look through the upper end of the ruler to the bottom, find the dividing line between the snow and the ground, and note the corresponding scale of the dividing line on the vertical plane;

c. Read the corresponding scale on the ruler on the upper snow surface, and subtract the corresponding scale on the vertical surface from the corresponding scale on the ruler, which is the snow depth.

Claims (3)

1. The visual snow depth measuring instrument is characterized by comprising a ruler, a visual end, a visual circuit, a planar reflector and a visual circuit, wherein the ruler is hollow, the cross section of the ruler is rectangular, the visual end is positioned at the bottom end of the ruler, the visual end is wedge-shaped, the upper end is as large as the ruler, the lower end is pointed, the visual end comprises a vertical surface and an inclined surface which is opposite to the vertical surface and forms 45 degrees, the vertical surface is made of transparent materials, scales are arranged on the vertical surface and keep continuous with the scales on the ruler, the vertical surface is used for observing the external environment and observing the snow depth, the inclined surface is provided with the planar reflector, the vertical surface is reflected to the top end of the ruler, and the visual circuit comprises a power supply, a switch and a bulb; the lamp shade is used for concentrating the light rays of the lamp bulb to one side of the vertical surface; the bulb and the inclined plane are arranged at two ends of the ruler and are separated by a certain distance.

2. The visual snow depth gauge of claim 1, in which the power source and switch are located at the top of the ruler.

3. The visual snow depth measuring instrument according to any one of claims 1-2, characterized in that the instrument is used as follows:

a. when the ruler is vertically inserted into the bottom of the snow cover, a switch of the visual circuit is turned on;

b. observing from the upper end of the ruler to the bottom, finding out the boundary between snow and the ground, and recording the corresponding scale of the boundary on the vertical surface;

c. and reading the corresponding scale of the upper snow surface on the ruler, and subtracting the corresponding scale on the vertical surface from the corresponding scale on the ruler to obtain the snow depth.