CN207317790U - A kind of assistant GPS-RTK accurately measures the device of strand tidal flat surface elevation - Google Patents

Abstract

The utility model relates to the technical field of coastal wetland geological survey and research, in particular to a device for assisting GPS-RTK in accurately measuring the surface elevation of coastal tidal flats. Conical groove, the taper of the conical groove allows the bottom tip of the GPS-RTK measuring rod to fully touch the bottom of the groove, and allows the GPS-RTK measuring rod to tilt outward in a 360° direction centered on the conical groove; The distance from the bottom of the conical groove to the lower surface of the chassis is a certain value; four scales are arranged longitudinally at equal intervals on the side of the chassis. The device can reduce human errors and improve the measurement accuracy of the surface elevation of coastal tidal flats.

Description

A device for assisting GPS-RTK to accurately measure the surface elevation of coastal tidal flats

technical field

The utility model relates to the technical field of coastal wetland geological survey and research, in particular to a device for assisting GPS-RTK in accurately measuring the surface elevation of coastal tidal flats.

Background technique

Using GPS-RTK to measure the surface elevation of coastal tidal flats is a commonly used method for coastal environmental geological surveys, and the measurement accuracy is sub-centimeter level. At present, the GPS-RTK measuring rod is mainly held by hand, and the person subjectively feels that the bottom tip of the measuring rod touches the surface of the tidal flat. At the same time, after adjusting the balance of the measuring rod, the GPS-RTK instrument reads the elevation data. During this period, the surveyor needs a force to support the measuring rod upwards and a force to adjust the measuring rod left and right so that the air bubble on the measuring rod is in the middle to keep the measuring rod vertical. Since coastal tidal flats are periodically covered by water, the surface is often in a soft plastic state. The measuring rod itself has a certain weight and the bottom is pointed. While vertical, it is difficult to hold the measuring rod so that the bottom tip just touches the surface of the tidal flat without sinking below the surface, resulting in measurement errors. At present, there is no reliable technical method or device that can effectively avoid the above problems.

Contents of the invention

Aiming at the above-mentioned elevation measurement process of the coastal tidal flat surface, it is difficult for surveyors to hold the measuring rod while adjusting the vertical of the measuring rod so that the bottom tip just touches the surface of the tidal flat without sinking below the surface, thus causing measurement errors. The utility model provides a device for assisting GPS-RTK in accurately measuring the surface elevation of coastal tidal flats. The device can disperse the gravity of a measuring rod, and the surveyor only needs to adjust the vertical of the measuring rod, effectively reducing human error and improving measurement accuracy.

The utility model is realized by adopting the following technical solutions:

A device for assisting GPS-RTK in accurately measuring the surface elevation of coastal tidal flats. The device includes a flat cylindrical chassis, and a conical groove is arranged in the middle of the upper part of the chassis. The taper of the conical groove allows GPS-RTK The bottom tip of the measuring rod fully touches the bottom of the groove, and allows the GPS-RTK measuring rod to tilt outward in a 360° direction centered on the conical groove; the distance between the bottom of the conical groove and the lower surface of the chassis is a certain value; four scales are vertically arranged at equal intervals on the side of the chassis.

Further, handles are provided symmetrically on both sides of the upper conical groove of the chassis for lifting the chassis.

Further, the taper of the conical groove is 2-5.

Further, the diameter of the groove is 2-5 cm, and the distance from the bottom of the groove to the lower surface of the chassis is an integer value.

Further, the distance from the bottom of the groove to the lower surface of the chassis is 1 cm, 2 cm or 3 cm.

Further, the chassis has a diameter of 10-30 cm and a height of 2-5 cm.

Further, the chassis is made of engineering plastics.

Further, the material of the chassis is transparent acrylic.

Compared with the prior art, the utility model has the following beneficial effects:

The chassis can effectively disperse the gravity of the measuring rod, and the surveyor only needs to adjust the verticality of the measuring rod, which helps to improve the measurement accuracy; the taper of the conical groove allows the bottom tip of the GPS-RTK measuring rod to fully touch the bottom of the groove , the distance from the bottom of the conical groove to the lower surface of the chassis is a certain value, which reduces measurement errors and simplifies calculations; the conical groove allows the GPS-RTK measuring rod to be centered on the bottom of the conical groove in any direction in the 360° direction The external tilt can also allow the measuring rod to be vertical; four scales are arranged longitudinally at equal intervals on the side of the chassis, which are used to read the trace line scale of the tidal flat soil left at the scale position of the device, and calculate the sinking thickness of the device. The four directions are taken average, reducing error and improving accuracy. The chassis is made of engineering plastics, which can improve the corrosion resistance, reduce the self-weight of the device, and ensure that the device is not easily deformed; the white acrylic material is used to easily identify trace lines.

Description of drawings

Fig. 1 is the side view of the device for assisting GPS-RTK to accurately measure the surface elevation of coastal tidal flat;

Fig. 2 is the top view of the device for assisting GPS-RTK to accurately measure the surface elevation of coastal tidal flats;

Figure 3 is a schematic diagram of the device used to assist GPS-RTK in accurately measuring the surface elevation of coastal tidal flats.

In the above figures: 1, chassis; 11, handle; 12, scale line; 2, conical groove; 3, measuring rod.

Detailed ways

In order to understand more clearly the above purpose, features and advantages of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

Example

Figure 1 and Figure 2 provide a device for assisting GPS-RTK in accurately measuring the surface elevation of coastal tidal flats. When the bottom tip of the GPS-RTK measuring rod 3 is placed in the conical groove 2, the chassis 1 can effectively disperse the gravity of the measuring rod 3, and the surveyor only needs to adjust the vertical of the measuring rod 3, which helps to improve the measurement accuracy. The taper of the conical groove 2 (the ratio of the diameter of the conical bottom surface to the height of the cone) allows the bottom tip of the GPS-RTK measuring rod 3 to fully touch the bottom of the groove, as shown in Figure 3, and the conical groove 2 The diameter is much larger than the diameter of the bottom of the measuring rod 3, allowing the GPS-RTK measuring rod 3 to incline outward arbitrarily in the direction of 360° in the conical groove 2 with the bottom of the conical groove 2 as the center, and the distance between the measuring rod and the upper surface of the chassis The minimum included angle between them is 30°; it is also possible to allow the measuring rod 3 to remain vertical. For ease of calculation, the distance from the bottom of the conical groove 2 to the lower surface of the chassis 1 is a certain value D, preferably an integer value, which is convenient for calculation; four scales 12 are arranged vertically at equal intervals on the side of the chassis 1, and the scales 12 The accuracy is set according to the measurement needs. The scale 12 is used to measure the depth of the chassis 1 sinking into the tidal flat soil, respectively read the scales corresponding to the trace lines left by the tidal flat soil at the four scale positions, and take the average value to obtain the sinking depth H of the device.

For ease of use, the upper part of the chassis 1 is symmetrically provided with a handle 11 for lifting the chassis, and the handle 11 can allow an adult's index finger to pass through easily. In order to adapt to the humid and high-salinity environment of coastal tidal flats, the material of the chassis 1 is engineering plastics, which not only improves the corrosion resistance, but also reduces the weight of the device to ensure that the device is not easily deformed; further preferably, white acrylic material is used to easily identify tides. Trace lines left by beach soil.

For ease of calculation, the following device sizes are more reasonable after practice. The taper of the conical groove 2 is 2-5, the diameter is 2-5cm, and the distance from the bottom of the groove 2 to the lower surface of the chassis is 1cm, 2cm or 3cm. The diameter of the chassis 1 is 10-30cm, and the height is 2-5cm. The above data are only for better describing the technical solution of the utility model, and those skilled in the art can design the dimensions according to actual needs without departing from the inventive concept of the utility model.

How to use: Before GPS-RTK measurement, gently place the device on the tidal flat surface, then place the bottom tip of the measuring rod 3 in the center of the conical groove 2 of the device, so that the bottom tip of the measuring rod 3 touches the cone vertex, as shown in Figure 3, at this time the gravity of the measuring rod is distributed to the entire chassis 1, and the surveyor can only adjust the vertical of the measuring rod 3 through the horizontal bubble, without applying an upward force to hold the measuring rod 3 . After the measurement, the device can be easily removed from the muddy tidal flat by pulling the handles on both sides of the upper part of the device. Read the trace line scale of the tidal flat soil left on the scale of the device, take the average value in four directions, and calculate the sinking depth H of the device. The elevation value of the measurement point=GPS-RTK measurement value+the sinking depth H of the device-the distance D from the bottom of the conical groove to the lower surface of the chassis.

Claims (8)

1. a kind of assistant GPS-RTK accurately measures the device of strand tidal flat surface elevation, it is characterised in that described device is including being in The chassis of oblate bar shape, the upper middle position on chassis are equipped with cone-shaped groove, and the taper of cone-shaped groove allows GPS-RTK The vertex (vertices) of measurement bar contacts the bottom of groove completely, and allows GPS-RTK measurement bars 360 ° of sides centered on cone-shaped groove It is outward-dipping upwards；The distance of the bottom of the cone-shaped groove to the lower surface on chassis is certain value；Between the side on chassis etc. Away from longitudinally disposed four graduated scales.

2. device according to claim 1, it is characterised in that the both sides of the upper cone connected in star on the chassis are symmetrically set Put handle.

3. device according to claim 1, it is characterised in that the taper of the cone-shaped groove is 2-5.

4. device according to claim 3, it is characterised in that a diameter of 2-5cm of the groove, the bottom of groove is on earth The distance of the lower surface of disk is integer value.

5. device according to claim 4, it is characterised in that the distance of the lower surface of the bottom of the groove to chassis is 1cm, 2cm or 3cm.

6. device according to claim 5, it is characterised in that a diameter of 10-30cm on the chassis, is highly 2-5cm.

7. device according to claim 6, it is characterised in that the material on the chassis is engineering plastics.

8. device according to claim 7, it is characterised in that the material on the chassis is transparent acrylic.