CN217738170U - Buried depth measuring probe and device for grounding network under multiple soil media - Google Patents
Buried depth measuring probe and device for grounding network under multiple soil media Download PDFInfo
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- CN217738170U CN217738170U CN202220958643.7U CN202220958643U CN217738170U CN 217738170 U CN217738170 U CN 217738170U CN 202220958643 U CN202220958643 U CN 202220958643U CN 217738170 U CN217738170 U CN 217738170U
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Abstract
The utility model discloses a measuring probe and a measuring device for the buried depth of a grounding grid under multiple soil media, wherein the probe comprises a probe shell, an induction coil, a connecting interface and a displacement sensor; the induction coil is arranged at the front end of the probe shell, the connecting interface is arranged at the tail end of the probe shell, and the induction coil is connected with the connecting interface; the displacement sensor is connected with the probe shell. Drilling a hole beside the position of a grounding grid to be detected with the burial depth, inserting the measuring probe into the ground along the hole, inducing the induction coil in the probe to induce the magnitude of magnetic induction electromotive force generated by the magnetic field of the grounding grid, and when the induction coil and the grounding grid are positioned on the same horizontal plane, the magnetic induction electromotive force generated by the induction coil is the largest, and taking the insertion depth of the displacement sensor to acquire the measuring probe at the moment as the burial depth of the grounding grid. The measuring probe is small and exquisite, has high measuring precision, realizes the trenchless detection of the buried depth of the grounding grid, is simple and convenient and has high efficiency compared with the manual excavation detection of the buried depth of the grounding grid.
Description
Technical Field
The utility model relates to a ground net detects technical field, especially relates to a ground net buried depth measuring probe, device under many soil medium.
Background
The quality of the grounding grid is monitored and accepted, and the grounding grid needs to be excavated and detected so as to check the buried depth and buried length of the grounding grid and check whether the construction condition of the grounding grid is consistent with the design drawing. The buried depth of the grounding grid is a key factor influencing grounding resistance, the buried depth of the grounding grid can only be detected by excavation at present, the excavation detection is time-consuming and labor-consuming, the detection work amount is large, and the efficiency is low; and secondly, the method is only suitable for partial spot inspection and is not suitable for large-scale detection or comprehensive detection in inspection and acceptance, and a grounding grid does not need to be supported by a detection technology in urgent need in the inspection and acceptance of power transmission and transformation projects.
The underground pipeline detector is adopted, the trend of the grounding wire can be preliminarily detected, but the buried depth detection error is large, especially under geological conditions such as hillstones, the detection deviation of the buried depth of the grounding wire can reach more than 30cm, the precision requirement of the buried depth detection of the grounding wire can not be met, the buried depth of the grounding wire is a key factor influencing the grounding resistance of the grounding wire and is also a key factor for judging whether the construction engineering quality of the grounding wire is qualified, and therefore, the accurate measurement technology of the buried depth of the grounding wire is necessary to be developed to realize the accurate measurement of the buried depth of the grounding wire.
SUMMERY OF THE UTILITY MODEL
The utility model provides a grounding grid buried depth measuring probe, device under many soil medium to solve the problem that current grounding grid buried depth measurement engineering volume is big, inefficiency.
In order to realize the purpose, the utility model adopts the following technical scheme:
the first aspect provides a buried depth measuring probe of a grounding grid under multiple soil media, which comprises a probe shell, an induction coil, a connecting interface and a displacement sensor;
the induction coil is arranged at the front end of the probe shell, the connecting interface is arranged at the tail end of the probe shell, and the induction coil is connected with the connecting interface; the displacement sensor is connected with the probe shell.
Before the measuring probe is used for measuring, an electric signal with specific frequency is introduced into a grounding network, the measuring probe is connected with a handheld terminal with an external display panel, a hole is drilled beside the position of the grounding network to be measured, then the measuring probe is inserted underground along the hole, an induction coil in the probe can induce the size of magnetic induction electromotive force generated by a magnetic field generated by the grounding network, and the size of the magnetic induction electromotive force is transmitted to the handheld terminal through an interface for displaying; meanwhile, the displacement sensor collects the insertion depth of the measuring probe and transmits the insertion depth to the handheld terminal for displaying, and a user can obtain the buried depth of the grounding grid according to the insertion depth when the magnetic induction electromotive force is maximum.
Furthermore, the displacement sensor is a pull rope type sensor, and a pull rope of the pull rope type sensor is connected with the front end of the probe shell. During operation, the main body of the stay cord type sensor is placed at the hole opening, the free end of the stay cord type sensor is fixedly connected with the front end of the probe shell, and the stay cord type sensor can convert the length of the stay cord into an analog signal and output the analog signal to the handheld terminal for displaying.
Further, the front end of the probe shell is of a conical structure, so that the smoothness of the measuring probe inserted into the hole is improved.
Furthermore, scales for marking the length are arranged on the probe shell, and the buried depth of the grounding grid can be read through the scales when data collected by the displacement sensor is ambiguous or the displacement sensor fails.
In a second aspect, a device for measuring the buried depth of a multi-soil-medium-lower-grounding net is provided, which comprises a handheld terminal and the buried depth measuring probe of the multi-soil-medium-lower-grounding net according to any one of the above schemes, wherein the connecting interface and the displacement sensor are both connected with the handheld terminal; the handheld terminal is used for displaying the size of the magnetic induction electromotive force collected by the induction coil and the size of the displacement collected by the displacement sensor.
Furthermore, the connection interface adopts a bolt type connection interface, so that the measurement probe and the handheld terminal can be conveniently connected and detached.
Furthermore, the handheld terminal comprises a power module, a circuit board, a display panel and a key module; the display panel, the key module and the power module are all connected with the circuit board, and the power module is used for supplying power to the measuring device.
Furthermore, the circuit board comprises an amplifying circuit, a filter circuit, a first analog-to-digital conversion module, a processing module and a second analog-to-digital conversion module connected with the processing module, wherein the amplifying circuit, the filter circuit, the first analog-to-digital conversion module and the processing module are sequentially connected; the amplifying circuit is connected with the connecting interface, and the second analog-to-digital conversion module is connected with the displacement sensor; the display panel and the key module are connected with the processing module.
The induction coil is used for receiving magnetic field signals generated by the grounding grid from the underground, but the signals of the magnetic field are weak, so that the signals detected by the induction coil are amplified by the amplifying circuit and filtered by the filtering circuit in sequence, then the analog signals are converted into digital signals by the first analog-to-digital conversion module and transmitted to the processing module, and then the digital signals are displayed by the display panel. The key module is used for inputting a power-on and power-off instruction and selecting an acceptance frequency.
Further, the power module is a rechargeable lithium battery.
Advantageous effects
The utility model provides a grounding grid buried depth measuring probe under many soil medium, device, during the measurement, at the other probing hole in the position of the grounding grid of the buried depth that awaits measuring, then insert the underground along the hole with this measuring probe, induction coil can respond to the magnetic induction electromotive force size that comes because of the magnetic field that the grounding grid produced in the probe, when induction coil is in same horizontal plane with the grounding grid, the magnetic induction electromotive force that induction coil produced is the biggest, the buried depth of the depth of insertion as the grounding grid of taking this moment displacement sensor collection measuring probe. The measuring probe is small and exquisite, has high measuring precision, and can realize the detection of centimeter-level precision of the buried depth of the grounding grid. The excavation-free detection of the buried depth of the grounding grid is realized, and compared with the manual excavation detection of the buried depth of the grounding grid, the excavation-free detection of the buried depth of the grounding grid is simple and convenient and high in efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the description below are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of a buried depth measuring probe of a grounding grid under multiple soil media according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a device for measuring the buried depth of a grounding grid under multiple soil media according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a handheld terminal according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be described in detail below. It is to be understood that the embodiments described are only some embodiments of the invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "center", "longitudinal", "lateral", "vertical", "horizontal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. When an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present.
It is noted that, in the description of the present invention, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or order.
Example 1
As shown in fig. 1, the present embodiment provides a probe for measuring the buried depth of a grounding grid under multiple soil media, which includes a probe housing 11, an induction coil 12, a connection interface 13, and a displacement sensor 15;
the induction coil 12 is arranged at the front end of the probe shell 11, the connection interface 13 is arranged at the tail end of the probe shell 11, and the induction coil 12 is connected with the connection interface 13 through an electric wire 14; the displacement sensor 15 is connected to the probe housing 11.
Before the measuring probe is used for measuring, an electric signal with specific frequency is introduced into a grounding network, the measuring probe is connected with a handheld terminal with an external display panel, a hole is drilled beside the position of the grounding network to be measured, then the measuring probe is inserted underground along the hole, an induction coil 12 in the probe can induce the size of magnetic induction electromotive force generated by a magnetic field generated by the grounding network, and the size of the magnetic induction electromotive force is transmitted to the handheld terminal through a connecting interface 13 for displaying; meanwhile, the displacement sensor 15 collects the insertion depth of the measuring probe and transmits the insertion depth to the handheld terminal for displaying, and a user can obtain the buried depth of the grounding grid according to the insertion depth when the magnetic induction electromotive force is maximum.
Specifically, the displacement sensor 15 is preferably a pull-cord type sensor, and a pull cord 16 of the pull-cord type sensor is connected to the front end of the probe housing 11. During operation, the main body of the stay cord type sensor is placed at the hole opening, the free end of the stay cord type sensor is fixedly connected with the front end of the probe shell, and the stay cord type sensor can convert the length of the stay cord into an analog signal and output the analog signal to the handheld terminal for displaying.
In this embodiment, the front end of the probe housing 11 is preferably tapered to improve the smoothness of insertion of the measurement probe into the bore. The probe shell 11 is provided with scales for marking the length, and the burial depth of the grounding grid can be read through the scales when data acquired by the displacement sensor 15 is doubtful or the displacement sensor fails.
Example 2
As shown in fig. 2, the present embodiment provides a device for measuring a buried depth of a ground net under multiple soil media, including a handheld terminal 2 and a probe for measuring a buried depth of a ground net under multiple soil media as described in embodiment 1, where the connection interface 13 and the displacement sensor 15 are both connected to the handheld terminal 2; the handheld terminal 2 is used for displaying the magnitude of the magnetic induction electromotive force collected by the induction coil 12 and the magnitude of the displacement collected by the displacement sensor 15.
As shown in fig. 3, the handheld terminal 2 includes a power module 26, a circuit board, a display panel 27, and a key module 28; the display panel 27, the key module 28 and the power module 26 are all connected with the circuit board, and the power module 26 is used for supplying power to the measuring device. More specifically, the circuit board includes an amplifying circuit 23, a filtering circuit 24, a first analog-to-digital conversion module 25, a processing module 21, and a second analog-to-digital conversion module 22 connected to the processing module 21; the amplifying circuit 23 is connected with the connection interface 13, and the second analog-to-digital conversion module 22 is connected with the displacement sensor 15; the display panel 27 and the key module 28 are both connected to the processing module 21.
The magnetic field signal generated from the ground by the grounding grid is received by the induction coil 12, but the signal of the magnetic field is weak, so the signal detected by the induction coil is amplified by the amplifying circuit 23, filtered by the filtering circuit 24, converted into a digital signal by the first analog-to-digital conversion module 25, transmitted to the processing module 21, and displayed by the display panel 27. The key module 28 is used for inputting a power-on/off instruction and selecting an acceptance frequency.
In this embodiment, the power module 26 is a rechargeable lithium battery. The connecting interface 13 is a bolt type connecting interface, so that the measuring probe can be conveniently connected with and detached from the handheld terminal 2.
The method for detecting the burial depth by using the measuring device comprises the following steps: introducing an electric signal with a certain specific frequency into the grounding network; the method comprises the steps of collecting magnetic induction electromotive force of different positions above the ground corresponding to a grounding grid in advance, determining the position of the grounding grid based on the magnitude of the magnetic induction electromotive force of each position, drilling holes beside the position of the grounding grid by using an electric drill, inserting a measuring probe into the ground along the holes, inducing a coil in the measuring probe to induce the magnetic induction electromotive force due to a magnetic field generated by the grounding grid, and when the detected magnetic induction electromotive force is the maximum, the insertion depth of the measuring probe is the accurate depth of the buried depth of the grounding grid, and the depth value can be directly displayed on a display panel, so that the method is visual and simple. By adopting the method, trenchless detection of the buried depth of the grounding grid is realized, and compared with manual excavation detection of the buried depth of the grounding grid, the method is simple and convenient and has high efficiency.
It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar parts in other embodiments may be referred to for the content which is not described in detail in some embodiments.
Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (9)
1. A probe for measuring the buried depth of a grounding network under multiple soil media is characterized by comprising a probe shell, an induction coil, a connecting interface and a displacement sensor;
the induction coil is arranged at the front end of the probe shell, the connecting interface is arranged at the tail end of the probe shell, and the induction coil is connected with the connecting interface; the displacement sensor is connected with the probe shell.
2. The probe for measuring burial depth of a grounding net under multiple soil media according to claim 1, wherein the displacement sensor is a pull-rope sensor, and a pull rope of the pull-rope sensor is connected with the front end of the probe shell.
3. The multi-soil medium sub-ground net burial depth measurement probe of claim 1, wherein the front end of the probe housing is of a tapered configuration.
4. The multi-soil medium grounding grid burial depth measuring probe of claim 1, wherein the probe housing is provided with a scale for marking length.
5. A device for measuring the buried depth of a grounding net under multiple soil media, which is characterized by comprising a handheld terminal and the probe for measuring the buried depth of the grounding net under multiple soil media according to any one of claims 1 to 4, wherein the connecting interface and the displacement sensor are connected with the handheld terminal; the handheld terminal is used for displaying the size of the magnetic induction electromotive force collected by the induction coil and the size of the displacement collected by the displacement sensor.
6. The device of claim 5, wherein the connection interface is a bolt-type connection interface.
7. The device of claim 5, wherein the handheld terminal comprises a power module, a circuit board, a display panel, and a key module; the display panel, the key module and the power module are all connected with the circuit board, and the power module is used for supplying power to the measuring device.
8. The device for measuring buried depth of a grounding grid under multiple soil media according to claim 7, wherein the circuit board comprises an amplifying circuit, a filter circuit, a first analog-to-digital conversion module, a processing module and a second analog-to-digital conversion module connected with the processing module, which are connected in sequence; the amplifying circuit is connected with the connecting interface, and the second analog-to-digital conversion module is connected with the displacement sensor; the display panel and the key module are connected with the processing module.
9. The device of claim 7, wherein the power module is a rechargeable lithium battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958643.7U CN217738170U (en) | 2022-04-25 | 2022-04-25 | Buried depth measuring probe and device for grounding network under multiple soil media |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220958643.7U CN217738170U (en) | 2022-04-25 | 2022-04-25 | Buried depth measuring probe and device for grounding network under multiple soil media |
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| Publication Number | Publication Date |
|---|---|
| CN217738170U true CN217738170U (en) | 2022-11-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220958643.7U Active CN217738170U (en) | 2022-04-25 | 2022-04-25 | Buried depth measuring probe and device for grounding network under multiple soil media |
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| CN (1) | CN217738170U (en) |
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- 2022-04-25 CN CN202220958643.7U patent/CN217738170U/en active Active
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