Watchband type frozen soil ice frontal surface detection device

Abstract

The utility model relates to a watchband type frozen soil ice frontal surface detection device, which comprises a test host, the device further comprises a flexible watchband and a plurality of electrodes arranged on the flexible watchband, the flexible watchband surrounds the side face of the cylindrical frozen soil sample during testing, and the plane where the center line of the flexible watchband is located is perpendicular to the axis of the frozen soil sample; and the switch gating array is respectively connected with each electrode and the test host. Compared with the prior art, the utility model has the advantages.

Description

Technical Field

[0001] The utility model relates to a frozen soil ice front detection device, in particular to a watchband type frozen soil ice front detection device. Background Art

[0002] Permafrost is a crucial geological structure, and its physical and chemical properties directly impact engineering construction, ecological environments, and climate change research. The ice front is the interface between permafrost and the overlying non-permafrost layer, and its changes affect soil moisture, temperature, and gas exchange.

[0003] Specifically, the capacitance measurement of permafrost of different thicknesses is of great significance for evaluating the internal moisture status of permafrost, reflecting changes in the physical properties of permafrost, and assisting permafrost engineering and environmental protection.

[0004] Early frozen soil detection technology mostly relied on manual sampling, and later gradually evolved into ring knife sampling. Generally, a cylindrical sample is obtained using a ring knife sampling device, and then a fixed probe is used to obtain the capacitance of the sample at different heights. For example, Chinese patent CN109932387A discloses such a detection device, which uses a vacuum transparent ring knife and soil sample integrated detection method. However, when this method is applied to capacitance measurement, the steps are relatively cumbersome, and the vacuum transparent ring knife will also restrict the motor, making it impossible to accurately and quickly measure the capacitance data. Utility Model Content

[0005] The purpose of the utility model is to provide a strap-type frozen soil ice front detection device.

[0006] The purpose of the utility model can be achieved through the following technical solutions:

[0007] A strap-type frozen soil ice front detection device, comprising:

[0008] Test host;

[0009] Also includes:

[0010] A flexible strap and a plurality of electrodes provided on the flexible strap, wherein the flexible strap is wrapped around the side of the cylindrical frozen soil sample during testing, and the plane where the center line of the flexible strap lies is perpendicular to the axis of the frozen soil sample;

[0011] The switch gate array is connected to each electrode and the test host respectively.

[0012] The flexible watchband is also provided with a slide rail, which is arranged parallel to the center line of the flexible watchband. The electrodes are arranged on the slide rail and slide along the slide rail.

[0013] There are two slide rails in total.

[0014] One end of the flexible strap is also provided with a fixing fastener. After the flexible strap is wrapped around the frozen soil sample, the other end is inserted into the fixing fastener to complete the fixation.

[0015] The flexible strap is an elastic part, and the fixing fastener is fixed on the frozen soil sample.

[0016] The flexible strap is a rubber piece.

[0017] The switch selection array includes two first switches, multiple second switches, and multiple third switches. The number of the second switches and the third switches is consistent with the number of electrodes and corresponds one to one. One end of each second switch is connected to the corresponding electrode, and the other end is connected to one end of one of the first switches. One end of each third switch is connected to the corresponding electrode, and the other end is connected to one end of another first switch. The other ends of the two first switches are respectively connected to the positive input terminal and the negative input terminal of the test host.

[0018] The first switch, the second switch and the third switch are all relays or MOS tubes.

[0019] The test host comprises an LCR tester, a data processing terminal and a display which are connected in sequence.

[0020] The display is a liquid crystal display or a LED display.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The electrodes are fixed by using a flexible strap, and there are multiple electrodes. Any electrode can be selected through the switch array to connect to the test host, so that the capacitance between different positions of the same interface can be quickly measured, and the convenience of switching the cross-sectional height can be improved.

[0023] 2. By setting the slide rail, the position of the electrode can be adjusted to have greater flexibility.

[0024] 3. There are two slide rails, which improves the stability of the electrode.

[0025] 4. The convenience of connecting the flexible strap into a ring can be improved by fixing the fastener.

[0026] 5. By setting the flexible strap as an elastic part and fixing the fastener on the specimen, the convenience and firmness of binding on the specimen can be improved.

[0027] 6. By setting the switch selection to the form of two first switches, multiple second switches, and multiple third switches, on the one hand, any two electrodes can be selected, and on the other hand, interference between the positive and negative electrodes can be avoided.

[0028] 7. When relays are used as the first switch, the second switch and the third switch, reliability can be improved.

[0029] 8. When MOS tubes are used for the first switch, the second switch and the third switch, the switching speed can be increased and the cost can be reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a structural diagram of the utility model;

[0031] Figure 2 It is a schematic diagram of the structure of the flexible strap and electrode part;

[0032] Among them: 1. Flexible strap, 2. Electrode, 3. Frozen soil specimen, 4. Switch selection array, 5. LCR tester, 6. Data processing terminal, 7. Display, 8. Slide rail, 9. Fixing fastener, 10. Wire. DETAILED DESCRIPTION

[0033] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0034] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not require further definition or explanation in subsequent drawings.

[0035] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. In addition, the terms "proximal", "distal", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. Physical quantities in formulas, unless separately marked, should be understood as basic quantities of the International System of Units, or derived quantities derived from basic quantities through mathematical operations such as multiplication, division, differentiation, or integration.

[0036] Furthermore, terms such as "horizontal," "vertical," and "overhanging" do not necessarily imply that a component must be absolutely horizontal or overhanging, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but rather that it can be slightly tilted.

[0037] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0038] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0039] A strap-type frozen soil ice front detection device, such as Figure 1 and Figure 2 Shown, including:

[0040] Test host;

[0041] Also includes:

[0042] A flexible strap 1 and a plurality of electrodes 2 provided on the flexible strap 1, wherein the flexible strap 1 is wrapped around the side of a cylindrical frozen soil sample during testing, and the plane where the center line of the flexible strap 1 lies is perpendicular to the axis of the frozen soil sample;

[0043] The switch gate array 4 is connected to each electrode 2 and the test host respectively.

[0044] The electrode 2 is fixed by using a flexible strap 1, and there are multiple electrodes 2. Any electrode 2 is selected to be connected to the test host through the switch selection array 4, so that the capacitance between different positions of the same interface can be quickly measured, and the convenience of switching the cross-sectional height can be improved, and it is only necessary to move the height of the flexible strap 1.

[0045] like Figure 2 As shown, the flexible strap 1 is also provided with a slide rail 8, which is arranged parallel to the center line of the flexible strap 1. The electrode 2 is arranged on the slide rail 8 and slides along the slide rail 8. By setting the slide rail 8, the position of the electrode can be adjusted, thereby having greater flexibility.

[0046] In most embodiments, there are two slide rails 8 , thereby improving the stability of the electrode 2 .

[0047] In addition, in this embodiment, a fixing fastener 9 is provided at one end of the flexible strap 1. After the flexible strap 1 is wrapped around the frozen soil sample, the other end is inserted into the fixing fastener 9 to complete the fixation. The fixing fastener 9 can improve the convenience of connecting the flexible strap into a ring.

[0048] In addition, in this embodiment, the flexible strap 1 is an elastic part, and the fixing fastener 9 is fixed on the frozen soil sample, thereby improving the convenience and firmness of binding on the sample, ensuring that the device will not loosen or fall off during use, and maintaining close contact between the flexible strap 1 and the frozen soil sample 3.

[0049] In this embodiment, the flexible strap 1 is a rubber member. Of course, in other embodiments, other materials can also be used as long as they can withstand repeated stretching and maintain durability.

[0050] In some embodiments, the switch selection array includes two first switches and multiple second switches and multiple third switches. The number of second switches and third switches is consistent with the number of electrodes 2 and corresponds one to one. One end of each second switch is connected to the corresponding electrode 2, and the other end is connected to one end of one of the first switches. One end of each third switch is connected to the corresponding electrode 2, and the other end is connected to one end of another first switch. The other ends of the two first switches are respectively connected to the positive input terminal and the negative input terminal of the test host. Generally, the first switch, the second switch and the third switch are all relays or MOS tubes. Of course, in other embodiments, other structures can also be used to quickly switch between multiple electrodes 2, simplify the circuit layout, and reduce the wiring complexity.

[0051] In addition, similar to the prior art, the test host includes an LCR tester 5, a data processing terminal 6 and a display 7 connected in sequence. The display 7 is a liquid crystal display or an LED display. The test host part has not been improved in this application. The LCR tester 5 can directly and accurately measure the capacitance value between the electrodes 2. The data processing terminal 6 can calculate and record the total capacitance value at different depths of the frozen soil sample 3 and intuitively display the measurement results in the form of a curve on the display 7, which is convenient for users to identify the frozen soil ice front.

[0052] During measurement, the flexible strap 1 is fixed at the top of the frozen soil sample 3, and the spacing between the electrodes 2 is adjusted to ensure even distribution. The switch array 4 is controlled to enable and disable the array 4, completing a set of measurements in the depth direction. The flexible strap 1 is then positioned on the frozen soil sample 3, and the measurement steps are repeated. The data processing terminal 6 processes the measurement data and displays the results as a graph on the display 7, making it easier for the user to identify the frozen soil ice front.

Claims

1. A strap-type frozen soil ice front detection device, comprising: Test host; It is characterized by further comprising: A flexible watchband (1) and a plurality of electrodes (2) arranged on the flexible watchband (1), wherein the flexible watchband (1) is wrapped around the side of a cylindrical frozen soil sample during testing, and the plane where the center line of the flexible watchband (1) is located is arranged perpendicular to the axis of the frozen soil sample; The switch selection array is connected to each electrode (2) and the test host respectively.

2. A strap-type frozen soil ice front detection device according to claim 1, characterized in that: The flexible watchband (1) is further provided with a slide rail (8), the slide rail (8) being arranged parallel to the center line of the flexible watchband (1), and the electrode (2) being arranged on the slide rail (8) and sliding along the slide rail (8).

3. The strap-type frozen soil ice front detection device according to claim 2, characterized in that: There are two slide rails (8) in total.

4. The strap-type frozen soil ice front detection device according to claim 1, characterized in that: One end of the flexible strap (1) is also provided with a fixing fastener (9); after the flexible strap (1) is wrapped around the frozen soil sample, the other end is inserted into the fixing fastener (9) to complete the fixation.

5. The strap-type frozen soil ice front detection device according to claim 4, characterized in that: The flexible watchband (1) is an elastic member, and the fixing buckle (9) is fixed on the frozen soil sample.

6. The strap-type frozen soil ice front detection device according to claim 5, characterized in that: The flexible watchband (1) is a rubber piece.

7. The strap-type frozen soil ice front detection device according to claim 1, characterized in that: The switch gating array comprises two first switches, a plurality of second switches and a plurality of third switches, the number of the second switches and the third switches being consistent with the number of the electrodes (2) and corresponding one to one, one end of each second switch being connected to the corresponding electrode (2), and the other end being connected to one end of one of the first switches, one end of each third switch being connected to the corresponding electrode (2), and the other end being connected to one end of another first switch, and the other ends of the two first switches being connected to the positive input terminal and the negative input terminal of the test host respectively.

8. The strap-type frozen soil ice front detection device according to claim 7, characterized in that: The first switch, the second switch and the third switch are all relays or MOS tubes.

9. The strap-type frozen soil ice front detection device according to claim 1, characterized in that: The test host comprises an LCR tester (5), a data processing terminal (6) and a display (7) which are connected in sequence.

10. The strap-type frozen soil ice front detection device according to claim 9, characterized in that: The display (7) is a liquid crystal display or an LED display.

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