Device and method for detecting drainage gradient of cable tunnel

Abstract

The invention discloses a device and a method for detecting the drainage gradient of a cable tunnel. The detection device adopts a support connecting frame consisting of a main beam, an auxiliary beam and a reinforcing plate; one end of the supporting column is connected with the main beam of the supporting connecting frame through the first mounting hole, and the other end is connected with the handle through the second mounting hole; the lower end of the main beam comprises third mounting holes, and the first wheel group is mounted at the lower end of the main beam through the third mounting holes; the lower end of the secondary beam comprises a fourth mounting hole, and the second wheel group is mounted at the lower end of the secondary beam through the fourth mounting hole; the inclination angle detection module is installed on the upper surface of the reinforcing plate and used for detecting the horizontal inclination angle of the detection device, and the distance detection module is installed on the first wheel set and used for detecting the advancing distance of the detection device. And finally, the drainage gradient is calculated by the central processing unit according to the horizontal dip angle and the advancing distance and a preset algorithm. According to the invention, the problems of low accuracy, low efficiency and occasional false acceptance during cable tunnel drainage slope detection in the prior art are solved.

Description

Technical Field

[0001] The present invention relates to the field of cable technology, and more specifically, to a detection device and a detection method for a drainage slope of a cable tunnel. Background Art

[0002] With the development of society, cities are constantly expanding outward, and the demand for electricity is growing continuously. The power industry also pays more attention to the important supporting role of power cables in social and economic development. As an important part of cable engineering construction, the construction quality of cable tunnels has a great impact on cable operation and maintenance and power reliability. In order to ensure the sustainability of cable tunnel operation, the state has also formulated construction standards and made relevant requirements for the construction quality and acceptance standards of power cable tunnels, such as: the longitudinal drainage slope of the cable tunnel should not be less than 0.5%, a water pit should be set up at the entrance and exit of the cable tunnel and in the power shaft, and there should be no less than one automatic drainage water pit on a tunnel.

[0003] At present, in actual project acceptance, the existing technology mainly relies on manual visual inspection and estimation to complete the acceptance of cable tunnel drainage slope, which is easily affected by subjective factors. The measurement results of different operators may vary significantly. The accuracy of slope detection results is low, and it is difficult to form accurate and traceable data records, which is not conducive to later quality management and problem tracking, and it is impossible to achieve digital precise measurement. Therefore, it is difficult to measure the drainage slope of cable tunnels on site, and tunnels with unqualified drainage often pass the acceptance, and the subsequent accumulation of water has caused great trouble for cable operation and maintenance. Summary of the invention

[0004] The present invention provides a detection device and a detection method for the drainage slope of a cable tunnel, so as to solve the problems of low accuracy, low efficiency and frequent misacceptance in the prior art when detecting the drainage slope of a cable tunnel.

[0005] The present invention provides a cable tunnel drainage slope detection device, comprising a handle, a support column, a support connection frame, a first wheel group, a second wheel group, a distance detection module, a tilt detection module, and a central processing unit;

[0006] The support connecting frame is a triangular bracket composed of a main beam, a secondary beam and a reinforcing plate; the upper end of the main beam includes a first mounting hole; the handle includes a second mounting hole located on the bottom surface;

[0007] One end of the support column is connected to the main beam of the support connecting frame through the first mounting hole, and the other end is connected to the handle through the second mounting hole;

[0008] The lower end of the main beam comprises a third mounting hole, and the first wheel set is mounted on the lower end of the main beam through the third mounting hole; the lower end of the sub-beam comprises a fourth mounting hole, and the second wheel set is mounted on the lower end of the sub-beam through the fourth mounting hole;

[0009] The inclination detection module is installed on the upper surface of the reinforcement plate to detect the horizontal inclination of the detection device; the distance detection module is installed on the first wheel group to detect the travel distance of the detection device; the central processing unit is used to calculate the drainage slope according to the horizontal inclination and the travel distance according to a preset algorithm.

[0010] Optionally, the detection device further includes a shock absorbing sheet;

[0011] The shock absorbing sheet is installed at the contact position between the inclination detection module and the reinforcing plate.

[0012] Optionally, the tilt detection module is connected to the central processing unit.

[0013] Optionally, the distance detection module is connected to the central processing unit.

[0014] Optionally, the first wheel set includes a first central shaft, a first bearing and a first wheel;

[0015] The first central axis passes through the third mounting hole at the lower portion of the main beam and is connected to the support connecting frame;

[0016] The first wheel is connected to the first central shaft via a first bearing.

[0017] Optionally, the distance detection module includes a Hall sensor and a permanent magnet disk;

[0018] The Hall sensor is connected to the end of the first central shaft, and the permanent magnet disk is arranged on the outer ring of the first bearing.

[0019] Optionally, the detection device further comprises a power module and a display panel; the central processing unit and the power module are both arranged inside the handle; the display panel is arranged on the top surface of the handle;

[0020] The display panel and the power module are respectively connected to the central processing unit; the central processing unit is used to send the calculated drainage slope to the display panel; the display panel is used to display the drainage slope; the power module is used to provide electrical energy to the detection device of the cable tunnel drainage slope.

[0021] Optionally, the detection device further comprises a voice module connected to the central processing unit;

[0022] The voice module is arranged at the front end of the handle.

[0023] A method for detecting a drainage slope of a cable tunnel, the method being applied to the detection device for the drainage slope of a cable tunnel as described above, comprising:

[0024] When the cable tunnel drainage slope detection device moves at a constant speed in the tunnel, the horizontal inclination angle between the detection device and the plane is collected by the inclination detection module, and the travel distance of the detection device is collected by the distance detection module;

[0025] Performing dynamic contrast calculation on the horizontal inclination angle and the travel distance in the current time window to obtain the contrast of the current time window;

[0026] Convert the contrast of the current time period into a slope prediction value;

[0027] The slope prediction value is compared with a preset slope threshold value, and if the slope prediction value is greater than or equal to the preset slope threshold value, an alarm signal is generated and output.

[0028] Optionally, performing a dynamic contrast operation on the horizontal inclination angle and the travel distance in the current time window to obtain a contrast ratio of the current time window includes:

[0029] Get the horizontal inclination and travel distance in the current time window;

[0030] Acquire a maximum inclination angle and a minimum inclination angle from the horizontal inclination angle in the current time window;

[0031] Calculating a first difference between the maximum inclination angle and a preset inclination angle, and a second difference between the minimum inclination angle and the preset inclination angle;

[0032] Subtracting the first difference from the second difference to obtain a third difference;

[0033] Calculate the product of the third difference and the duration reference of the current time window, and obtain the ratio between the product and the travel distance as the filtering operation value of the current time window;

[0034] Compare the filter operation value of the current time window with the filter operation value of the previous time window to generate the contrast of the current time window.

[0035] Compared with the prior art, the cable tunnel drainage slope detection device provided by the present invention adopts a support connection frame composed of a main beam, a secondary beam and a reinforcement plate; the upper end of the main beam includes a first mounting hole; the handle includes a second mounting hole located on the bottom surface; one end of the support column is connected to the main beam of the support connection frame through the first mounting hole, and the other end is connected to the handle through the second mounting hole; the lower end of the main beam includes a third mounting hole, and the first wheel group is mounted on the lower end of the main beam through the third mounting hole; the lower end of the secondary beam includes a fourth mounting hole, and the second wheel group is mounted on the lower end of the secondary beam through the fourth mounting hole; and an inclination detection module installed on the upper surface of the reinforcement plate, which is used to detect the horizontal inclination of the detection device, and a distance detection module installed on the first wheel group, which is used to detect the travel distance of the detection device; finally, the central processing unit calculates the drainage slope according to the preset algorithm based on the horizontal inclination and the travel distance; thereby realizing the automatic detection of the cable tunnel drainage slope, being able to achieve digital and precise measurement, and effectively solving the problems of low accuracy, low efficiency and misacceptance in the prior art when detecting the cable tunnel drainage slope.

[0036] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0038] Figure 1 It is a schematic diagram of the structure of a device for detecting the drainage slope of a cable tunnel provided by an embodiment of the present invention;

[0039] Figure 2 is a schematic structural diagram of a device for detecting a drainage slope of a cable tunnel provided by another embodiment of the present invention;

[0040] Figure 3 is a schematic structural diagram of a handle provided by an embodiment of the present invention;

[0041] Figure 4 is a schematic diagram of installing a tilt detection module and a distance detection module provided by an embodiment of the present invention;

[0042] Figure 5 is a schematic diagram of installing a distance detection module provided by an embodiment of the present invention;

[0043] Figure 6 is a side schematic diagram of a wheel provided by an embodiment of the present invention;

[0044] Figure 7It is a schematic diagram of the internal circuit of a device for detecting the drainage slope of a cable tunnel provided by an embodiment of the present invention;

[0045] Figure 8 It is a flow chart of the implementation of the method for detecting the drainage slope of a cable tunnel provided in an embodiment of the present invention.

[0046] Reference numerals:

[0047] Handle 10; support column 20; support connecting frame 30; first wheel set 40; second wheel set 50;

[0048] Main beam 31; first mounting hole 311; secondary beam 32; reinforcing plate 33;

[0049] A second mounting hole 11;

[0050] A first central shaft 41; a first bearing 42; a first wheel 43;

[0051] Distance detection module 60; Hall sensor 61; Permanent magnet disk 62;

[0052] Inclination detection module 70; shock absorbing sheet 90;

[0053] CPU 80;

[0054] Power module 100;

[0055] Display panel 110;

[0056] Voice module 120;

[0057] Power data interface 130 . DETAILED DESCRIPTION

[0058] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0059] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0060] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0061] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0062] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0063] In the specification and claims of the present invention, if the term "first" or "second" is involved, it may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "plurality" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the related objects are in an "or" relationship.

[0064] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, which 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 orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation to the present invention.

[0065] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" involved should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0066] The following describes in detail a device for detecting the drainage slope of a cable tunnel according to an embodiment of the present invention with reference to the accompanying drawings.

[0067] The cable tunnel drainage slope detection device according to the embodiment of the present invention comprises a handle 10, a support column 20, a support connection frame 30, a first wheel set 40, a second wheel set 50, a distance detection module 60, an inclination detection module 70, and a central processing unit 80;

[0068] The support connecting frame 30 is a triangular bracket composed of a main beam 31, a secondary beam 32 and a reinforcing plate 33; the upper end of the main beam 31 includes a first mounting hole 311; the handle 10 includes a second mounting hole 11 located on the bottom surface;

[0069] One end of the support column 20 is connected to the main beam 31 of the support connecting frame 30 through the first mounting hole 311, and the other end is connected to the handle 10 through the second mounting hole 11;

[0070] The lower end of the main beam 31 includes a third mounting hole, and the first wheel set 40 is mounted on the lower end of the main beam 31 through the third mounting hole; the lower end of the sub-beam 32 includes a fourth mounting hole, and the second wheel set 50 is mounted on the lower end of the sub-beam 32 through the fourth mounting hole;

[0071] The inclination detection module 70 is installed on the upper surface of the reinforcing plate 33, and is used to detect the horizontal inclination of the detection device; the distance detection module 60 is installed on the first wheel group 40, and is used to detect the travel distance of the detection device; the central processing unit 80 is used to calculate the drainage slope according to the horizontal inclination and the travel distance according to a preset algorithm.

[0072] like Figure 1 , Figure 2 As shown, the support column 20 is inserted into the first mounting hole 311 and the second mounting hole 11 to connect the handle 10 and the support connecting frame 30, so that the user can push the cable tunnel drainage slope detection device forward by holding the handle 10, which is easy and labor-saving. The first wheel set 40 is installed at the lower end of the main beam 31 through the third mounting hole (not shown in the figure), and the second wheel set 50 is installed at the lower end of the sub-beam 32 through the fourth mounting hole (not shown in the figure).

[0073] Optionally, as a preferred example of the present invention, the detection device may adopt a four-wheel parallel design, that is, the first wheel group 40 and the second wheel group 50 respectively adopt a double-wheel structure, thereby ensuring that the entire detection device remains stable on an uneven tunnel floor.

[0074] like Figure 2 , Figure 4 As shown, the support connecting frame 30 includes a main beam 31, a secondary beam 32 and a reinforcing plate 33. The main beam 31, the secondary beam 32 and the reinforcing plate 33 are connected end to end to form a triangular bracket, which increases the stability of the overall structure of the device.

[0075] like Figure 3 , Figure 4As shown, the inclination detection module 70 is arranged on the upper surface of the reinforcing plate 33, the distance detection module 60 is arranged on the first wheel group 40, and the central processing unit 80 is arranged inside the handle 10. The inclination detection module 70 and the distance detection module 60 are connected to the central processing unit 80 respectively. The cable tunnel drainage slope detection device provided by the present invention collects the horizontal inclination of the detection device through the inclination detection module 70, collects the travel distance of the detection device through the distance detection module 60, and finally calculates the drainage slope according to the horizontal inclination and the travel distance according to the preset algorithm by the central processing unit 80, thereby realizing the automatic measurement of the cable tunnel drainage slope, effectively eliminating the influence of human subjective factors, improving the reliability and consistency of the detection results, and greatly improving the detection efficiency. By establishing a digital detection recording system in the central processing unit 80 or an external server, the present invention also realizes the automatic recording, storage and analysis of the detection data, providing a reliable basis for acceptance work, especially suitable for complex tunnel environments, ensuring that the tunnel drainage slope detection can be completed safely and accurately under various conditions.

[0076] Optionally, as a preferred example of the present invention, the tilt detection module 70 may adopt MEMS technology so that the detection accuracy can reach 0.01.

[0077] In an embodiment of the present invention, the detection device further includes a shock absorbing sheet 90 ; the shock absorbing sheet 90 is installed at the contact position between the inclination detection module 70 and the reinforcing plate 33 .

[0078] like Figure 4 As shown, the shock absorbing sheet 90 is installed below the inclination detection module 70. By providing the shock absorbing sheet 90, the present embodiment can eliminate the vibration of the cable tunnel drainage slope detection device during the traveling process, effectively eliminate the influence of the vibration on the detection result, and thus improve the accuracy of tunnel drainage slope detection.

[0079] In one embodiment of the present invention, the first wheel set 40 includes a first central shaft 41, a first bearing 42 and a first wheel 43;

[0080] The first central axis 41 passes through the third mounting hole at the lower portion of the main beam 31 and is connected to the support connecting frame 30;

[0081] The first wheel 43 is connected to the first central shaft 41 via a first bearing 42 .

[0082] Further, the distance detection module 60 includes a Hall sensor 61 and a permanent magnet disk 62;

[0083] The Hall sensor 61 is connected to the end of the first central shaft 41 , and the permanent magnet disk 62 is disposed on the outer ring of the first bearing 42 .

[0084] like Figure 2 , Figure 5 , Figure 6 As shown, in this embodiment, the first central axis 41 is fixedly connected to the support connecting frame 30, and the first bearing 42 can rotate around the first central axis 41, thereby driving the first wheel 43 to rotate, so as to realize the free movement of the detection device of the drainage slope of the cable tunnel. Among them, the distance detection module 60 is composed of a Hall sensor 61 and a permanent magnet disk 62, and the permanent magnet disk 62 is arranged on the outer ring of the first bearing 42. The Hall sensor 61 is fixedly arranged at one end of the first central axis 41 and extends radially outward from the end surface of the end by a certain distance, so as to perform electromagnetic induction with the permanent magnet disk 62 to realize the detection of the travel distance.

[0085] In one embodiment of the present invention, the detection device further includes a power module 100 and a display panel 110; the central processor 80 and the power module 100 are both disposed inside the handle 10; the display panel 110 is disposed on the top surface of the handle 10;

[0086] The display panel 110 and the power module 100 are respectively connected to the central processor 80; the central processor 80 is used to send the calculated drainage slope to the display panel 110; the display panel 110 is used to display the drainage slope; the power module 100 is used to provide power to the cable tunnel drainage slope detection device.

[0087] like Figure 3 , Figure 7 As shown, this embodiment can display the drainage slope detected by the cable tunnel drainage slope detection device in real time by setting the display panel 110, so as to find problems in time. The central processor 80 is the core of the detection device, responsible for data acquisition, processing and storage, connecting with all modules, and coordinating the work between modules. It can also automatically record and store the drainage slope, obtain a complete slope curve, and avoid human errors. The power module 100 uses a high-capacity rechargeable lithium battery to provide a stable power supply for the entire system.

[0088] In an embodiment of the present invention, the detection device further includes a voice module 120 connected to the central processor 80 ; the voice module 120 is disposed at the front end of the handle 10 .

[0089] like Figure 3 , Figure 7As shown, the voice module 120 is connected to the central processor 80 and is used to implement a multi-level sound and light alarm mechanism according to the command signal sent by the central processor 80.

[0090] In one embodiment of the present invention, the detection device further includes a power data interface 130; the power data interface 130 is disposed at the rear end of the handle 10;

[0091] The power data interface 130 is connected to the central processing unit 80 .

[0092] like Figure 3 , Figure 7 As shown, the power data interface 130 is disposed at the rear end of the handle 10 and is used to charge the power module 80 and access the detection data.

[0093] The working principle of the cable tunnel drainage slope detection device is described below. Figure 8 A flowchart of a method for detecting a drainage slope of a cable tunnel provided in an embodiment of the present invention. The method is applied to the device for detecting a drainage slope of a cable tunnel as described above, comprising:

[0094] Step S801, when the cable tunnel drainage slope detection device moves at a constant speed in the tunnel, the horizontal inclination angle between the detection device and the plane is collected by the inclination detection module, and the travel distance of the detection device is collected by the distance detection module;

[0095] Step S802, performing dynamic contrast calculation on the horizontal inclination angle and the travel distance in the current time window to obtain the contrast of the current time window;

[0096] Step S803, converting the contrast of the current time period into a slope prediction value;

[0097] Step S804: compare the slope prediction value with a preset slope threshold value. If the slope prediction value is greater than or equal to the preset slope threshold value, generate and output an alarm signal.

[0098] In this embodiment, after the user starts the detection device for the drainage slope of the cable tunnel, the drainage slope of the tunnel is detected by pushing the detection device forward at a uniform speed in the tunnel. During the forward movement of the detection device, the inclination detection module collects the horizontal inclination between the detection device and the horizontal plane in real time, and the distance detection module collects the travel distance of the detection device in real time. The inclination detection module combined with the distance detection module can accurately measure the slope change to 0.01%. The central processor obtains the horizontal inclination and the travel distance, performs dynamic contrast calculation according to the time window, generates the contrast corresponding to each time window, and then converts the contrast of the current time period into a slope prediction value by analyzing the contrast, stores the slope prediction value, and sends the slope prediction value to the display panel for output, and transmits it to the remote control center through the power data interface. During the user pushing the detection device for the drainage slope of the cable tunnel forward, the detection device for the drainage slope of the cable tunnel can continuously measure and draw a slope curve of the entire tunnel. It can be seen that the cable tunnel drainage slope detection device provided in this embodiment has the advantages of high precision, strong real-time performance, strong adaptability, reliable data and consistency.

[0099] In one embodiment of the present invention, the step S802 performs a dynamic contrast operation on the horizontal inclination angle and the travel distance in the current time window to obtain the contrast of the current time window, including:

[0100] Step S8021, obtaining the horizontal inclination angle and travel distance in the current time window;

[0101] Step S8022, obtaining a maximum inclination angle and a minimum inclination angle from the horizontal inclination angle in the current time window;

[0102] Step S8023, calculating a first difference between the maximum inclination angle and a preset inclination angle, and a second difference between the minimum inclination angle and the preset inclination angle;

[0103] Step S8024, subtracting the first difference from the second difference to obtain a third difference;

[0104] Step S8025, calculating the product between the third difference and the duration reference of the current time window, and obtaining the ratio between the product and the travel distance as the filtering operation value of the current time window;

[0105] Step S8026 compares the filter operation value of the current time window with the filter operation value of the previous time window to generate the contrast of the current time window.

[0106] This embodiment uses dynamic filtering to smooth, denoise, and extract characteristic frequency band information from the horizontal inclination angle collected by the inclination detection module and the travel distance collected by the distance detection module. The dynamic filtering operation calculates the filter output by combining the maximum value, minimum value, preset value, and travel distance in the time window, and its formula is:

[0107] y(n)=((∠max-a)-(∠min-a))*ms / d

[0108] In the above formula, y(n) represents the filtering operation value of the current time window n, ∠max represents the maximum inclination angle in the current time window, ∠min represents the minimum inclination angle in the current time window, a represents the preset inclination angle, ms represents the duration reference of the current time window, and d represents the travel distance.

[0109] Among them, the preset inclination angle a is a preset reference value, which is used to adjust the filtering effect. A fixed preset value or a dynamic value can be used. The travel distance d refers to the physical distance or time interval between each data point when the detection device of the cable tunnel drainage slope collects data, which is used to normalize or adjust the intensity of the filter. The duration reference ms of the current time window is the length of the time window considered in the filtering operation, or the position of the current time point. By smoothing, enhancing or suppressing the horizontal inclination information using the above formula, the obtained output value y(n) is the filtered output value of the current time window.

[0110] Dynamic contrast operation is to further compare the filter operation values ​​of adjacent time windows on the basis of dynamic filtering operation, so as to obtain the change characteristics of the signal. Among them, the contrast refers to the difference measurement value of the filter operation values ​​of adjacent time windows, that is, the difference measurement between the filter operation value y(n) of the current time window and the filter operation value y(n-1) of the previous time window. As a preferred example of the present invention, the contrast includes but is not limited to the difference y(n)-y(n-1), the ratio y(n) / y(n-1), and the percentage change (y(n)-y(n-1)) / y(n-1)*100%. The preset slope threshold is used to determine whether the slope prediction value converted from the contrast has changed significantly. In this embodiment, the contrast is analyzed by setting a preset slope threshold. When the slope prediction value converted from the contrast is greater than or equal to the preset slope threshold, it indicates that the signal has undergone a sudden change, a trend change, and periodic volatility. Characteristics such as, then an alarm operation needs to be performed and an alarm signal is output.

[0111] The cable tunnel drainage slope detection method provided in this embodiment can automatically detect the drainage slope, eliminate the influence of human subjective factors, improve the reliability and consistency of the detection results, and thus greatly improve the detection efficiency; and can automatically record, store and analyze the detection data to provide a reliable basis for acceptance work; at the same time, it also has a remote monitoring function to realize real-time monitoring of the tunnel slope and provide objective and accurate detection data, which is conducive to preventing unqualified tunnels from passing acceptance and improving the quality of the project.

[0112] Of course, for those skilled in the art, other structures and working principles of the cable tunnel drainage slope detection device are understandable and achievable, and will not be described in detail in the present invention.

[0113] Although some specific embodiments of the present invention have been described in detail by way of example, it will be appreciated by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A device for detecting the drainage slope of a cable tunnel, characterized in that: It comprises a handle (10), a support column (20), a support connecting frame (30), a first wheel set (40), a second wheel set (50), a distance detection module (60), an inclination detection module (70), and a central processing unit (80); The support connecting frame (30) is a triangular bracket composed of a main beam (31), a secondary beam (32) and a reinforcing plate (33); the upper end of the main beam (31) includes a first mounting hole (311); the handle (10) includes a second mounting hole (11) located on the bottom surface; One end of the support column (20) is connected to the main beam (31) of the support connecting frame (30) through the first mounting hole (311), and the other end is connected to the handle (10) through the second mounting hole (11); The lower end of the main beam (31) comprises a third mounting hole, and the first wheel set (40) is mounted on the lower end of the main beam (31) through the third mounting hole; the lower end of the sub-beam (32) comprises a fourth mounting hole, and the second wheel set (50) is mounted on the lower end of the sub-beam (32) through the fourth mounting hole; The inclination detection module (70) is mounted on the upper surface of the reinforcing plate (33) and is used to detect the horizontal inclination of the detection device; the distance detection module (60) is mounted on the first wheel set (40) and is used to detect the travel distance of the detection device; and the central processor (80) is used to calculate the drainage slope according to the horizontal inclination and the travel distance in accordance with a preset algorithm.

2. The cable tunnel drainage slope detection device according to claim 1, characterized in that: The detection device also includes a shock absorbing sheet (90); The shock absorbing sheet (90) is installed at the contact point between the inclination detection module (70) and the reinforcing plate (33).

3. The cable tunnel drainage slope detection device according to claim 1 or 2, characterized in that: The tilt angle detection module (70) is connected to the central processing unit (80).

4. The cable tunnel drainage slope detection device according to claim 1, characterized in that: The distance detection module (60) is connected to the central processing unit (80).

5. The cable tunnel drainage slope detection device according to claim 1, characterized in that: The first wheel set (40) comprises a first central shaft (41), a first bearing (42) and a first wheel (43); The first central axis (41) passes through a third mounting hole (312) at the lower portion of the main beam (31) and is connected to the supporting connecting frame (30); The first wheel (43) is connected to the first center shaft (41) via a first bearing (42).

6. The cable tunnel drainage slope detection device according to claim 5, characterized in that: The distance detection module (60) comprises a Hall sensor (61) and a permanent magnet disk (62); The Hall sensor (61) is connected to the end of the first central shaft (41), and the permanent magnet disk (62) is arranged on the outer ring of the first bearing (42).

7. The cable tunnel drainage slope detection device according to claim 1, characterized in that: The detection device further comprises a power module (100) and a display panel (110); the central processing unit (80) and the power module (100) are both arranged inside the handle (10); the display panel (110) is arranged on the top surface of the handle (10); The display panel (110) and the power module (100) are respectively connected to the central processor (80); the central processor (80) is used to send the calculated drainage slope to the display panel (110); the display panel (12) is used to display the drainage slope; and the power module (100) is used to provide electric energy to the cable tunnel drainage slope detection device.

8. The cable tunnel drainage slope detection device according to claim 1, characterized in that: The detection device also includes a voice module (120) connected to the central processor (80); The voice module (120) is arranged at the front end of the handle (10).

9. A method for detecting the drainage slope of a cable tunnel, characterized in that: The method is applied to the detection device for the drainage slope of a cable tunnel as claimed in any one of claims 1 to 8, comprising: When the cable tunnel drainage slope detection device moves at a constant speed in the tunnel, the horizontal inclination angle between the detection device and the plane is collected by the inclination detection module, and the travel distance of the detection device is collected by the distance detection module; Performing dynamic contrast calculation on the horizontal inclination angle and the travel distance in the current time window to obtain the contrast of the current time window; Convert the contrast of the current time period into a slope prediction value; The slope prediction value is compared with a preset slope threshold value, and if the slope prediction value is greater than or equal to the preset slope threshold value, an alarm signal is generated and output.

10. The method for detecting the drainage slope of a cable tunnel according to claim 9, characterized in that: The step of performing dynamic contrast calculation on the horizontal inclination angle and the travel distance in the current time window to obtain the contrast of the current time window includes: Get the horizontal inclination and travel distance in the current time window; Acquire a maximum inclination angle and a minimum inclination angle from the horizontal inclination angle in the current time window; Calculating a first difference between the maximum inclination angle and a preset inclination angle, and a second difference between the minimum inclination angle and the preset inclination angle; Subtracting the first difference from the second difference to obtain a third difference; Calculate the product of the third difference and the duration reference of the current time window, and obtain the ratio between the product and the travel distance as the filtering operation value of the current time window; Compare the filter operation value of the current time window with the filter operation value of the previous time window to generate the contrast of the current time window.

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