Cable fault detection device

Abstract

The utility model relates to the technical field of cable detection, and discloses a cable fault detection device, which comprises a box body provided with a power interface, a control key, a fault detection interface, a display screen and a pulse and data module. During detection, the pulse generator emits a pulse signal, the pulse signal is transmitted into the detected cable through the fault detection interface, the pulse signal returns along the original path after encountering a fault, the data module detects and calculates the position of a fault point of the detected cable based on the time domain reflection technology, and a pulse oscillogram is displayed on the display screen. Therefore, the fault reason of the detected cable can be judged. Therefore, the cable fault detection device can quickly and accurately judge the position of a fault point and the reason of the fault only by operating at one end of the cable, so that the manpower is saved, the detection time is shortened, and the fault detection efficiency of a relatively long cable is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cable detection technical field, especially relate to a cable fault detection device. BACKGROUND

[0002] The accurate detection of cable fault has important significance for ensuring the quality and safety of equipment such as ships, aircrafts and vehicles.

[0003] In the prior art, most of the methods for determining fault points are to test from both ends of the cable respectively; however, the method of testing from both ends of the cable is applicable to short cables; for cables of hundreds of meters or even several hundreds of meters in working conditions such as ships, airports and workshops, at least two persons are needed for detection, which is very time-consuming and labor-intensive, and the fault cause and fault point position cannot be quickly and accurately determined, which reduces the work efficiency.

[0004] Therefore, how to improve the fault detection efficiency of long cables has become a technical problem to be solved in the field. CONTENT OF THE UTILITY MODEL

[0005] The utility model aims at least solve how to improve the technical problem of the fault detection efficiency of long cables. The purpose is realized by the following technical scheme:

[0006] In a first aspect, the utility model provides a cable fault detection device, which comprises a box body, and the box body is provided with: a power supply interface for connecting with a charging wire to realize overall power supply of the cable fault detection device; a control button, including a switch button, which is used to start or close the cable fault detection device; at least one fault detection interface for electrically connecting with one end of the measured cable; a display screen for displaying detection data and detection images; a pulse generator located in a containing cavity in the box body, which is used to emit pulse signals to the measured cable through the fault detection interface; and a data module located in the containing cavity, which is signal connected with the display screen, the pulse generator and the fault detection interface, and the data module is configured to detect the position of the fault point of the measured cable based on time domain reflection technology, and the data module is used to store detection data and detection images.

[0007] The cable fault detection device, in operation, first connects the power supply to the box through the power supply interface by the charging wire, then presses the switch button, then electrically connects one end of the measured cable to the fault detection interface, then selects the pulse width and pulse voltage suitable for the material quality of the measured cable according to the main interface display of the display screen, then starts detection, and makes the pulse generator emit a pulse signal, the pulse signal is emitted into the measured cable from the fault detection interface, and when the pulse signal meets a fault, the pulse signal returns along the original path, based on the time domain reflection technology, the data module detects and calculates the position of the fault point of the measured cable, and displays the pulse waveform diagram on the display screen, so as to determine the cause of the fault of the measured cable. Therefore, the cable fault detection device can quickly and accurately determine the fault point position and the fault cause of the cable by operating at one end of the cable, saves manpower, shortens the detection time, and improves the fault detection efficiency of the long cable.

[0008] In some embodiments of the utility model, the control button further includes a pause detection button, the pause detection button is connected with the pulse generator, and the pause detection button is used for stopping the pulse generator from emitting the pulse signal.

[0009] In some embodiments of the utility model, the control button further includes an enlargement button, a reduction button and a screenshot button, the enlargement button is used for enlarging the picture of the display screen, the reduction button is used for reducing the picture of the display screen, and the screenshot button is used for intercepting the picture of the display screen.

[0010] In some embodiments of the utility model, the box further includes a local area network interface connected with the data module and / or a universal serial bus interface connected with the data module.

[0011] In some embodiments of the utility model, the box further includes a resistance detection interface used for electrically connecting with one end of the measured cable, and the resistance detection interface is connected with the data module.

[0012] In some embodiments of the utility model, the accommodating cavity of the box further includes a lithium battery used for supplying power to the cable fault detection device as a whole.

[0013] In some embodiments of the utility model, the cable fault detection device further includes an alligator clip, the alligator clip includes a clamping jaw and a connecting wire, a first end of the connecting wire is fixedly connected with the clamping jaw, a second end of the connecting wire is used for electrically connecting with the fault detection interface, and the clamping jaw is used for clamping one end of the measured cable.

[0014] In some embodiments of the utility model, the cable fault detection device further includes an auxiliary wire box, the auxiliary wire box includes a box body with a wire port and an auxiliary cable, a first end of the auxiliary cable is used for electrically connecting with one end of the measured cable through the wire port, and the clamping jaw is used for clamping a second end of the auxiliary cable.

[0015] In some embodiments of the utility model, the box is a cuboid, the cuboid comprises: a top surface, the control button is arranged on the top surface; a bottom surface, the bottom surface is symmetrically arranged with the top surface; a front surface, the display screen is arranged on the front surface; a back surface, the back surface is symmetrically arranged with the front surface; a first side surface, the power interface and the fault detection interface are arranged on the first side surface; and a second side surface, the second side surface is symmetrically arranged with the first side surface.

[0016] In some embodiments of the utility model, the back surface is provided with a support, and the support is used for supporting the box.

[0017] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, which can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the application more obvious and easy to understand, the following specific embodiments of the application are described. BRIEF DESCRIPTION OF DRAWINGS

[0018] By reading the detailed description of the preferred embodiments below, various other advantages and benefits will become apparent to those of ordinary skill in the art. The drawings are only for the purpose of illustrating the preferred embodiments and are not considered to be limiting on the utility model. Moreover, the same reference numerals are used to represent the same parts throughout the drawings. In the drawings:

[0019] Figure 1 Structure schematic view of the box in the cable fault detection device provided by the embodiments of the utility model under one angle;

[0020] Figure 2 Structure schematic view of the box in the cable fault detection device provided by the embodiments of the utility model under another angle;

[0021] Figure 3 Structure schematic view of a cable fault detection device provided by the embodiments of the utility model;

[0022] Figure 4 Structure schematic view of the cable fault detection device in Figure 3 and the measured cable is connected;

[0023] Figure 5 Structure schematic view of another cable fault detection device provided by the embodiments of the utility model;

[0024] Figure 6 Structure schematic view of the cable fault detection device in Figure 5 and the measured cable is connected.

[0025] The reference numerals are as follows:

[0026] 100, cable fault detection device;

[0027] 1000, box; 1100, power interface; 1200, control button; 1210, switch button; 1220, pause detection button; 1230, enlarge button; 1240, reduce button; 1250, screenshot button; 1300, fault detection interface; 1400, display screen; 1500, local area network interface; 1600, universal serial bus interface; 1700, resistance detection interface; 1010, top surface; 1030, front surface; 1040, back surface; 1041, support; 1042, containing groove; 1043, rotating shaft; 1050, first side surface; 1060, second side surface;

[0028] 2000, crocodile clip; 2100, clip jaw; 2200, connecting wire;

[0029] 3000, auxiliary cable box; 3100, box body; 3200, auxiliary cable;

[0030] 200, measured cable. DETAILED DESCRIPTION

[0031] Example embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the present disclosure to those skilled in the art.

[0032] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has", "having" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order in which they are described, unless specifically identified as an order dependent step. It is also to be understood that additional or alternative steps can be employed.

[0033] Although the terms first, second, third, etc. can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0034] Spatially relative terms, such as "inner", "outer", "inward", "outward", "lower", "bottom", "top", "upper", and the like, can be used herein for ease of description to describe one element or feature's relationship to another element(s) or feature(s) as illustrated in the figures. Such spatially relative terms can be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" or "over" the other elements or features. Thus, the example term "below" can encompass both an orientation of above and below. The device can be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0035] Figure 1 A structure schematic view of the box in the cable fault detection device provided by the embodiment of the utility model under one angle; Figure 2 A structure schematic view of the box in the cable fault detection device provided by the embodiment of the utility model under another angle; Figure 1 And Figure 2As shown, this utility model embodiment provides a cable fault detection device 100. The cable fault detection device 100 includes a housing 1000, which is provided with: a power interface 1100 for connecting to a charging cable to provide power to the cable fault detection device 100; control buttons 1200, including a switch button 1210 for starting or stopping the cable fault detection device 100; at least one fault detection interface 1300 for electrically connecting to one end of the cable 200 under test; a display screen 1400 for displaying detection data and detection images; a pulse generator located in a cavity inside the housing 1000, which is used to transmit pulse signals to the cable 200 under test through the fault detection interface 1300; and a data module located in the cavity, which is signal-connected to the display screen 1400, the pulse generator, and the fault detection interface 1300. The data module is configured to detect the location of the fault point of the cable 200 under test based on time-domain reflectometry, and the data module is used to store detection data and detection images.

[0036] The display screen 1400 can be designed as a touch screen, and a virtual start button can be set on the touch screen; during detection, the pulse generator is activated to emit pulse signals by touching the virtual start button.

[0037] Furthermore, it's easy to understand that time domain reflectometry is commonly referred to as TDR (Time Domain Reflectometry). And the fault detection interface 1300 can be equipped with multiple interfaces to accommodate multiple cables under test; for example... Figure 1 and Figure 2 As shown, four fault detection interfaces 1300 are set up.

[0038] In addition, when there are multiple fault detection interfaces 1300, before detecting the fault point, the corresponding fault detection channel (i.e., the correct fault detection interface 1300) can be selected on the main interface of the display screen 1400, and then the material calibration of the cable 200 under test can be performed. The data module will detect, analyze and store the data collected by multiple fault detection interfaces 1300, and display the detection values ​​on the display screen 1400. After calibration is completed, the appropriate pulse width and pulse voltage are selected, and then the pulse generator is started to emit pulse signals for subsequent detection.

[0039] In the embodiment, when the cable fault detection device 100 is in operation, first, the power supply is connected to the box 1000 through the power interface 1100 by the charging line, then the switch button 1210 is pressed, one end of the measured cable 200 is electrically connected to the fault detection interface 1300, then the pulse width and the pulse voltage suitable for the material of the measured cable 200 are selected according to the main interface display of the display screen 1400, then the detection is started, the pulse generator emits a pulse signal, the pulse signal is shot into the measured cable 200 by the fault detection interface 1300, when the pulse signal meets the fault, the pulse signal returns along the original path, based on the time domain reflection technology, the data module detects and calculates the position of the fault point of the measured cable 200, and the pulse waveform diagram is displayed on the display screen 1400, so that the reason for the fault of the measured cable 200 is judged.

[0040] Therefore, the cable fault detection device 100 can quickly and accurately judge the fault position and the fault reason of the cable by operating at one end of the cable, manpower is saved, the detection time is shortened, and the fault detection efficiency of the long cable is improved.

[0041] Reference Figure 1 and Figure 2 In some embodiments of the utility model, the control button 1200 further includes a pause detection button 1220, the pause detection button 1220 is connected with the pulse generator signal, and the pause detection button 1220 is used to stop the pulse generator from emitting the pulse signal.

[0042] In the embodiment, after the detection is started, the pulse signal is shot into the measured cable 200 by the fault detection interface 1300, when the pulse signal meets the fault, the pulse signal returns along the original path, if the propagation of the pulse signal is not stopped, the judgment of the generated pulse waveform diagram will be affected finally.

[0043] Therefore, in the embodiment, the pause detection button 1220 is arranged, when the pulse waveform diagram is generated clearly, the pause detection button 1220 can be pressed to stop the propagation of the pulse signal, so that the detection accuracy is improved.

[0044] Reference Figure 1 and Figure 2 In some embodiments of the utility model, the control button 1200 further includes an enlargement button 1230 for enlarging the picture of the display screen 1400, a reduction button 1240 for reducing the picture of the display screen 1400, and a screenshot button 1250 for taking a screenshot of the picture of the display screen 1400.

[0045] In the embodiment, it is easy to understand that, in order to further improve the convenience of detection, the picture of the display screen 1400 can be enlarged, reduced and taken a screenshot by pressing different control buttons 1200.

[0046] It is easy to understand that zooming in and out of the display screen 1400 helps the operator to more easily identify the information on the display screen 1400, while taking a screenshot can save the desired image in the form of a screenshot for later viewing.

[0047] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the housing 1000 is further provided with: a local area network interface 1500, which is connected to the data module via signal; and / or a universal serial bus interface 1600, which is connected to the data module via signal.

[0048] It is easy to understand that the LAN interface 1500 is usually called the LAN (Local Area Network) interface, while the Universal Serial Bus interface 1600 is usually called the USB (Universal Serial Bus) interface.

[0049] In this embodiment, if the final detection data and images need to be saved to another device (such as a computer), the cable fault detection device 100 needs to have the function of information transmission; therefore, a local area network interface 1500 or a universal serial bus interface 1600 can be provided on the housing 1000.

[0050] For example, when information transmission is required, the cable fault detection device 100 can interact with external devices by inserting a network cable into the local area network interface 1500; if the final detection result is confidential or network transmission is inconvenient, the cable fault detection device 100 can interact with external devices via a USB flash drive or data cable through the universal serial bus interface 1600.

[0051] Therefore, in this embodiment, a local area network interface 1500 and / or a universal serial bus interface 1600 are provided on the housing 1000 to satisfy the information transmission function of the cable fault detection device 100.

[0052] It should be noted that this embodiment is only an example. In actual working conditions, the type and number of interfaces can be selected according to the working conditions and there is no specific limitation.

[0053] refer to Figure 1 and Figure 2 In some embodiments of this utility model, the housing 1000 is also provided with a resistance detection interface 1700 for electrical connection with one end of the cable 200 under test, and the resistance detection interface 1700 is connected to the data module signal.

[0054] In this embodiment, it is easy to understand that, in order to improve the application scenarios of the cable fault detection device 100, that is, on the premise that the cable fault detection device 100 can determine the cable and the location and cause of the fault, it should also have other functions.

[0055] Therefore, the housing 1000 in this embodiment is also provided with a resistance detection interface 1700 for detecting the resistance of the cable 200 under test. During the test, one end of the cable 200 under test is electrically connected to the resistance detection interface 1700. The resistance detection can also be started by a virtual button set in the display screen 1400. After the data module calculates the test result, the resistance value is displayed on the display screen 1400.

[0056] In some embodiments of this utility model, a lithium battery is also provided in the housing cavity of the housing 1000, which is used to power the cable fault detection device 100 as a whole.

[0057] In this embodiment, it is easy to understand that the lithium battery eliminates the need for the cable fault detection device 100 to obtain power through the power interface 1100 for each detection. The lithium battery itself has a power storage function, which improves the convenience of operation and can also cope with emergencies (such as power outages or inconvenient power supply connections).

[0058] Figure 3 A schematic diagram of the structure of a cable fault detection device provided in an embodiment of this utility model;

[0059] Figure 4 for Figure 3 A schematic diagram showing the connection between the cable fault detection device and the cable under test; please refer to the diagram as well. Figure 3 and Figure 4 In some embodiments of this utility model, the cable fault detection device 100 further includes an alligator clip 2000, which includes a claw 2100 and a connecting wire 2200. The first end of the connecting wire 2200 is fixedly connected to the claw 2100, and the second end of the connecting wire 2200 is used to electrically connect to the fault detection interface 1300. The claw 2100 is used to clamp one end of the cable 200 under test.

[0060] It is easy to understand that when the enclosure 1000 is equipped with a resistance detection interface 1700, the second end of the connecting line 2200 can also be electrically connected to the resistance detection interface 1700 to ultimately realize the detection of the resistance of the cable 200 under test.

[0061] In this embodiment, the alligator clip 2000 is easy to set up and connect, which can further ensure the efficiency of testing the cable 200 under test.

[0062] Figure 5A schematic diagram of another cable fault detection device provided in this embodiment of the present invention; Figure 6 for Figure 5 A schematic diagram showing the connection between the cable fault detection device and the cable under test; please refer to the diagram as well. Figure 5 and Figure 6 In some embodiments of this utility model, the cable fault detection device 100 further includes an auxiliary junction box 3000, which includes: a box body 3100 having a wiring port; and an auxiliary cable 3200. The first end of the auxiliary cable 3200 is used to electrically connect to one end of the cable under test 200 through the wiring port, and the gripper 2100 is used to clamp the second end of the auxiliary cable 3200.

[0063] It should be noted that, since time-domain reflectometry has certain requirements on the length of the cable under test 200, if the length of the cable under test 200 is too short, it may result in the inability to detect the pulse signal.

[0064] Therefore, in this embodiment, an auxiliary junction box 3000 is provided to increase the length of the cable. The length of the cable after the cable is increased is the sum of the length of the cable under test 200 and the effective length of the auxiliary cable 3200.

[0065] Specifically, when the length of the cable under test 200 is too short, for example, only 3 meters; after the connecting wire 2200 of the alligator clip 2000 is connected to the fault detection interface 1300, the second end of the auxiliary cable 3200 is clamped by the claw 2100, and finally one end of the cable under test 200 is connected to the first end of the auxiliary cable 3200 through the wiring port.

[0066] Therefore, this approach enables the cable fault detection device 100 to be applicable to both long and short cables 200 under test. That is, regardless of whether the length of the cable 200 under test is sufficient to detect the pulse signal, the fault point of the cable 200 under test can be detected by using only one end of the cable 200 under test, thereby increasing the application scenarios of the cable fault detection device 100.

[0067] like Figure 1 and Figure 2 As shown, in some embodiments of this utility model, the housing 1000 is a rectangular body, which includes: a top surface 1010, on which control buttons 1200 are disposed; a bottom surface, symmetrically disposed with respect to the top surface 1010; a front surface 1030, on which a display screen 1400 is disposed; a back surface 1040, symmetrically disposed with respect to the front surface 1030; a first side surface 1050, on which a power interface 1100 and a fault detection interface 1300 are disposed; and a second side surface 1060, symmetrically disposed with respect to the first side surface 1050.

[0068] In this embodiment, it is readily understood that the first side 1050 may also be provided with a universal serial bus interface 1600, such as... Figure 1 As shown; the second side 1060 may be equipped with a local area network interface 1500, such as Figure 2 As shown.

[0069] Continue to refer to Figure 2 In some embodiments of this utility model, a bracket 1041 is provided on the back side 1040, and the bracket 1041 is used to support the box body 1000.

[0070] In this embodiment, taking the cabinet 1000 as a rectangular body and the display screen 1400 as the front 1030 of the rectangular body as an example, the bracket 1041 can be set on the back 1040 of the cabinet 1000.

[0071] Specifically, the back 1040 of the cabinet 1000 can be provided with a receiving groove 1042 and a rotating shaft 1043. The bracket 1041 can switch between a supporting state and a retracted state by rotating relative to the rotating shaft 1043. Normally, the bracket 1041 is in the retracted state. When the operating surface (i.e., the surface on which the cabinet 1000 is placed during testing, such as the surface of the operating table) is uneven or other situations occur that make it impossible for the cabinet 1000 to be placed stably, the bracket 1041 can be switched to the supporting state. That is, the bracket 1041 is moved out of the receiving groove 1042 so that the bracket 1041 supports the operating surface, thereby maintaining the balance of the cabinet 1000. Ultimately, the cabinet 1000 can be placed stably on the operating surface, which facilitates the subsequent operation of the cabinet 1000 and the reading of the screen 1400 by the operator.

[0072] The above description is merely a preferred embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A cable fault detection apparatus, characterized by, The cable fault detection device comprises a box body provided with: a power interface for connecting with a charging wire to supply power to the whole cable fault detection device; a control button including an on-off button for starting or stopping the cable fault detection device; at least one fault detection interface for electrically connecting with one end of a cable to be detected; a display screen for displaying detection data and images; a pulse generator located in a containing cavity inside the box body, the pulse generator being configured to emit pulse signals to the cable to be detected through the fault detection interface; and a data module located in the containing cavity, the data module being signal connected with the display screen, the pulse generator and the fault detection interface, the data module being configured to detect the position of a fault point of the cable to be detected based on time domain reflectometry and store the detection data and images. The control button further comprises a pause detection button signal connected with the pulse generator, the pause detection button being configured to stop the pulse generator from emitting pulse signals.

2. The cable fault detection apparatus of claim 1, wherein The control button further comprises:

3. The cable fault detection apparatus of claim 1, wherein, an enlarge button for enlarging the display screen; a reduce button for reducing the display screen; and a screenshot button for taking a screenshot of the display screen. The box body is further provided with:

4. The cable fault detection apparatus of claim 1, wherein, a local area network interface signal connected with the data module; and / or a universal serial bus interface signal connected with the data module. The box body is further provided with a resistance detection interface for electrically connecting with one end of a cable to be detected, the resistance detection interface being signal connected with the data module. The containing cavity of the box body is further provided with a lithium battery for supplying power to the whole cable fault detection device.

5. The cable fault detection apparatus of claim 1, wherein, The cable fault detection device further comprises an alligator clip including a clip jaw and a connecting wire, a first end of the connecting wire being fixedly connected with the clip jaw, a second end of the connecting wire being configured to be electrically connected with the fault detection interface, the clip jaw being configured to clamp one end of a cable to be detected.

6. The cable fault detection apparatus of claim 1, wherein, The cable fault detection device further comprises an auxiliary wire box including:

7. The cable fault detection apparatus of claim 1, wherein, a box body provided with a wire port; and 8. The cable fault detection apparatus of claim 7, wherein, an auxiliary cable, a first end of the auxiliary cable being configured to be electrically connected with one end of a cable to be detected through the wire port, the clip jaw being configured to clamp a second end of the auxiliary cable. The box body is a cuboid, the cuboid comprising: a top surface on which the control button is arranged; 9. The cable fault detection apparatus of any one of claims 1-8, wherein, a bottom surface symmetrically arranged with the top surface; a front surface on which the display screen is arranged; a back surface symmetrically arranged with the front surface; a first side surface on which the power interface and the fault detection interface are arranged; and a second side surface symmetrically arranged with the first side surface. The back surface is provided with a support for supporting the box body. ​ 10. The cable fault detection apparatus of claim 9, wherein, ​

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