Electronic ruler for measuring net depth and burial depth of underground cavity

Abstract

The utility model provides an electronic ruler for measuring the net depth and the burial depth of an underground cavity, and particularly relates to the technical field of detection, the electronic ruler for measuring the net depth and the burial depth of the underground cavity comprises a ruler body and a detection assembly, the vertical probe is arranged at the bottom of the ruler body, the horizontal probe is arranged on the side, close to the bottom, of the ruler body, scale marks are marked on the ruler body, and the zero scale of the scale marks is located at the center line of the horizontal probe. The horizontal probe and the vertical probe are used for detecting the distance in the vertical direction and the distance in the horizontal direction respectively, when the horizontal probe reaches the top of the cavity, the scale marks and the vertical probe can measure the burial depth and the net depth of the cavity respectively, the electronic ruler is higher in measurement efficiency, and the measurement result is more accurate.

Description

Technical Field

[0001] The utility model relates to the field of detection technology, in particular to an electronic ruler for measuring the net depth and burial depth of underground cavities. Background Art

[0002] In the field of highway defect detection, the current main technical means for the detection and precise measurement of underground cavities or voids that are highly concealed and pose a potential threat to the safety of road structures is to focus on non-destructive testing technology and combine it with drilling rigs, steel probe probing, and industrial endoscope observation for review and verification.

[0003] This is usually achieved using ground-penetrating radar, which uses the propagation and reflection principles of electromagnetic waves to emit high-frequency electromagnetic waves into the ground. When the electromagnetic waves encounter the interface of different media, they will be reflected. They are then captured by the radar receiving system and converted into analyzable signals. The reflected signals are then processed and analyzed. Ground-penetrating radar can quickly and effectively reveal changes in underground structures, such as soil stratification, changes in water content, and the existence of abnormal areas such as voids or voids, paving the way for subsequent repair work. However, this technology is easily affected by many factors, including interference factors such as groundwater levels and metal pipelines, which will affect the radar signal and cause deviations in the measurement results. In addition, the physical properties of the underground medium, such as the dielectric constant and conductivity, will affect the propagation speed and reflection characteristics of the electromagnetic wave, thereby affecting the accuracy of the measurement results.

[0004] Usually after detection, a review and verification will be carried out. The review and verification is generally carried out after drilling a hole in the ground. A slender and rigid steel drill is used to probe into the hole until it touches the bottom of the hole. At this time, the total depth D1 is recorded. Then the industrial endoscope is inserted into the hole and adjusted to the appropriate position. The horizontal lens image is observed. The upper edge position of the cavity or void is clearly displayed through the endoscope, and the depth D2 of the endoscope is recorded. The difference between D1 and D2 represents the net depth of the cavity or void. However, this method has a large measurement error. On the one hand, steel drill probing and industrial endoscope observation are highly dependent on the skills and experience of the operator. On the other hand, the accuracy of the thin rod and the industrial endoscope itself is limited. Especially under complex geological conditions, small errors will lead to large measurement deviations. In addition, the entire measurement process is relatively cumbersome.

[0005] In view of this, the utility model provides an electronic ruler for reading the net depth and buried depth data of underground cavities and voids more accurately and efficiently. Utility Model Content

[0006] In order to solve the above problems, the utility model proposes an electronic ruler for measuring the net depth and burial depth of underground cavities.

[0007] The utility model is achieved through the following technical solutions:

[0008] The utility model proposes an electronic ruler for measuring the net depth of underground cavities, comprising a ruler body and a detection component, wherein:

[0009] The detection assembly includes a horizontal probe and a vertical probe. The vertical probe is arranged at the bottom of the ruler body, and the horizontal probe is arranged on the side of the ruler body close to the bottom. The ruler body is marked with scale lines, and the zero scale of the scale lines is located at the center line of the horizontal probe.

[0010] Furthermore, the ruler body also includes an LED display screen and a control board. The LED display screen is arranged on one side of the ruler body close to the top of the ruler body, and the control board is electrically connected to the LED display screen, the horizontal probe and the vertical probe respectively.

[0011] Furthermore, a measuring button is provided on one side of the ruler body near the top, and the measuring button is used to record readings.

[0012] Furthermore, a switch button is provided on one side of the ruler body near the top, and the switch button is used to turn the electronic ruler on and off.

[0013] Furthermore, a battery compartment and a battery cover are provided on the top of the ruler body. The battery cover is provided on the top of the battery compartment, and batteries are placed in the battery compartment.

[0014] Beneficial effects of the utility model:

[0015] The electronic ruler for measuring the net depth of underground cavities proposed by the utility model utilizes a horizontal probe and a vertical probe to detect the distance in the vertical direction and the horizontal direction respectively. When the horizontal probe reaches the top of the cavity, the scale line and the vertical probe can measure the burial depth and the net depth of the cavity respectively. The electronic ruler has higher measurement efficiency and more accurate measurement results. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the overall structural diagram of the utility model;

[0017] Figure 2 This is the principle diagram of underground cavity net depth measurement;

[0018] In the figure: vertical probe 1, horizontal probe 2, scale line 3, measurement button 4, LED display 5, switch button 6, battery cover 7, ruler body 8;

[0019] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0020] In order to more clearly and completely illustrate the technical solution of the present invention, the present invention will be further described below with reference to the accompanying drawings.

[0021] Please refer to Figure 1-Figure 2 The present invention proposes an electronic ruler for measuring the net depth of underground cavities, comprising a ruler body 8 and a detection assembly, wherein:

[0022] The detection assembly includes a horizontal probe 2 and a vertical probe 1. The vertical probe 1 is arranged at the bottom of the ruler body 8, and the horizontal probe 2 is arranged on the side of the ruler body 8 close to the bottom. The ruler body 8 is marked with a scale line 3, and the zero scale of the scale line 3 is located at the center line of the horizontal probe 2.

[0023] In a specific embodiment, the horizontal probe 2 and the vertical probe 1 are used to detect the distance in the vertical direction and the horizontal direction respectively. The scale line 3 is used to measure the depth of the cavity. The horizontal probe and the horizontal probe 2 detect the horizontal distance and the horizontal distance. The scale is used for display. After drilling the ground, the ruler body 8 is inserted into the hole for measurement. When the reading Dh of the horizontal probe 2 at the bottom of the ruler body 8 suddenly increases, it means that the horizontal probe 2 has reached the top of the cavity. The reading Dv of the vertical probe 1 (the value of Dv is automatically corrected by subtracting the distance from the center line of the horizontal probe 2 to the vertical probe) is the same as the reading Dh of the horizontal probe 2 at the bottom of the ruler body 8. The distance from the zero scale on the ruler body 8 to the ground surface (i.e., the reading between the scale line 3 and the ground surface) is the net depth of the cavity, and the reading of the scale line 3 on the ruler body 8 at this time is the buried depth of the cavity. Simply put, when the horizontal probe 2 reaches the top of the cavity, the distance detected by the horizontal probe 2 will suddenly increase. When the horizontal probe 2 reaches the top of the cavity, the detection distance of the vertical probe 1 is the depth of the cavity, and the distance from the zero scale on the ruler body 8 to the ground surface (i.e., the reading between the scale line 3 and the ground surface) is the buried depth of the cavity (i.e., the distance from the top of the cavity to the ground surface). The electronic ruler provided by the utility model has higher measurement efficiency and smaller measurement result error, and is more accurate.

[0024] Furthermore, the ruler body 8 also includes an LED display screen 5 and a control board. The LED display screen 5 is arranged on the ruler body 8 near the top side of the ruler body 8, and the control board is electrically connected to the LED display screen 5, the horizontal probe 2 and the vertical probe 1 respectively.

[0025] In a specific embodiment, the LED display screen 5 is used to display the net depth reading of the cavity, the control board is used to collect data measured by the horizontal probe 2 and the vertical probe 1, and the ruler body 8 has a built-in control board for signal acquisition and data display. The control board collects the data measured by the two probes and displays the corresponding values on the LED screen.

[0026] Furthermore, a measuring button 4 is provided on one side of the ruler body 8 near the top, and the measuring button 4 is used to record readings. A switch button 6 is also provided on one side of the ruler body 8 near the top, and the switch button 6 is used to turn the electronic ruler on and off.

[0027] In a specific embodiment, after a short press of the measuring button 4, the current reading can be recorded to facilitate the subsequent measurement of the net depth of the cavity. The switch button 6 can be long pressed for three seconds to power on and start use.

[0028] Furthermore, a battery compartment and a battery cover 7 are provided on the top of the ruler body 8. The battery cover 7 is provided on the top of the battery compartment, and batteries are placed in the battery compartment.

[0029] In a specific embodiment, the battery compartment is arranged at the top of the ruler body 8 and can accommodate cylindrical batteries to power the electronic ruler. The battery cover 7 closes the battery compartment.

[0030] In summary, during specific use, long press to turn on the power. At this time, the LED display screen 5 displays the distance Dh measured by the horizontal probe 2 and the distance Dv measured by the vertical probe 1 in real time. Then, drill a hole in the ground and slowly lower the electronic ruler along the hole. At this time, observe the horizontal detection distance Dh. When the electronic ruler is just inserted into the hole, Dh is a very small reading and close to 0. When Dh suddenly increases, it indicates that the depth is the top interface of the hole. At this time, press the measurement button 4, and the vertical distance Dv measured by the vertical probe 1 will be automatically recorded. At this time, Dv is the net depth of the hole, and the reading of the electronic ruler scale line 3 on the ruler body 8 is the buried depth of the hole.

[0031] Of course, the present invention may have many other implementations. Based on this implementation, other implementations obtained by ordinary technicians in this field without any creative work are all within the scope of protection of the present invention.

Claims

1. An electronic ruler for measuring the net depth of underground cavities, characterized in that: It includes a ruler body and a detection assembly, wherein: The detection assembly includes a horizontal probe and a vertical probe. The vertical probe is arranged at the bottom of the ruler body, and the horizontal probe is arranged on the side of the ruler body close to the bottom. The ruler body is marked with scale lines, and the zero scale of the scale lines is located at the center line of the horizontal probe.

2. The electronic ruler for measuring the net depth of underground cavities according to claim 1, characterized in that: The ruler body further includes an LED display screen and a control board. The LED display screen is arranged on one side of the ruler body close to the top of the ruler body. The control board is electrically connected to the LED display screen, the horizontal probe and the vertical probe respectively.

3. The electronic ruler for measuring the net depth of underground cavities according to claim 1, characterized in that: A measuring button is also provided on one side of the ruler body near the top, and the measuring button is used to record readings.

4. The electronic ruler for measuring the net depth of underground cavities according to claim 1, characterized in that: A switch button is also provided on one side of the ruler body near the top, and the switch button is used to turn the electronic ruler on and off.

5. The electronic ruler for measuring the net depth of underground cavities according to claim 1, characterized in that: A battery compartment and a battery cover are also provided on the top of the ruler body. The battery cover is provided on the top of the battery compartment, and batteries are placed in the battery compartment.

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