Coaxial line outer cover broken skin detection device and detection method

Abstract

The invention discloses a coaxial line outer cover broken skin detection device and a detection method. The device comprises a first shielding box and a conduction test device. The coaxial line to be tested is located in the first shielding box, and the conduction testing device is located outside the first shielding box; the first end of the central conductor of the coaxial line to be tested and the first end of the braid layer of the coaxial line to be tested are connected with the conduction testing device through the first connecting piece; the second end of the central conductor of the coaxial line to be tested and the second end of the braid layer of the coaxial line to be tested are connected with the conduction testing device through a second connecting piece; the first shielding box is filled with conductive gas, and the coaxial line to be tested is located in the first shielding box and makes contact with the conductive gas. According to the technical scheme provided by the embodiment of the invention, whether the jacket of the coaxial line is broken or not is detected.

Description

Technical Field

[0001] The present invention relates to the technical field of coaxial line detection, and in particular to a coaxial line outer sheath breakage detection device and a detection method. Background Art

[0002] As a cable used to transmit high-frequency electrical signals, coaxial cable has the advantages of stable signal transmission, strong anti-interference ability, suitability for long-distance transmission, and broadband. It is widely used in communications, broadcasting, television, radar, computer networks and other fields. Especially driven by emerging technologies such as 5G, Internet of Things, and smart home, the demand for coaxial cable in high-end fields is gradually increasing. Based on the above advantages and development prospects, coaxial cable has become one of the mainstream signal transmission lines.

[0003] However, during actual testing and functional analysis (FA analysis), it was found that when the outer skin of the coaxial line was broken, normal high-voltage testing could not detect this undesirable phenomenon. Summary of the invention

[0004] The present invention provides a coaxial cable outer sheath breakage detection device and a detection method, so as to detect whether the outer sheath of the coaxial cable is broken.

[0005] According to a first aspect of the present invention, a coaxial cable outer sheath damage detection device is provided, comprising:

[0006] It includes a first shielding box and a conduction test device;

[0007] The coaxial line to be tested is located in the first shielding box, and the continuity test device is located outside the first shielding box;

[0008] The first end of the central conductor of the coaxial line to be tested and the first end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a first connector; the second end of the central conductor of the coaxial line to be tested and the second end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a second connector; the first shielding box is filled with conductive gas, and the coaxial line to be tested is located in the first shielding box and in contact with the conductive gas.

[0009] According to another aspect of the present invention, a method for detecting a broken outer sheath of a coaxial line is provided, comprising:

[0010] The central conductor of the coaxial line to be tested and the first conductor connecting wire and the second conductor connecting wire form a first path, and the braided layer of the coaxial line to be tested and the first braided connecting wire and the second braided connecting wire form a second path; the coaxial line to be tested includes N, and the value of N includes an integer greater than or equal to 2; the N second paths are connected to form a second total path;

[0011] Applying a preset voltage to the first selected path using a power supply terminal of the conduction test device;

[0012] Measuring the voltage of the first selected path using a first test terminal of the conduction test device;

[0013] The voltage of the second selected path is measured by using a second test terminal of a conduction test device; the conduction test device comprises a reference resistor, a first terminal of the reference resistor is grounded, and a second terminal of the reference resistor is electrically connected to the second test terminal;

[0014] The insulation resistance between the first selected path and the second selected path is calculated according to the preset voltage, the voltage of the first selected path measured by the first test terminal, the voltage of the second selected path measured by the second test terminal, and the reference resistance.

[0015] In the technical solution provided by the present invention: when the first shielding box is filled with conductive gas, the exposed braided layer at the broken outer sheath of the coaxial cable to be tested will come into contact with the conductive gas, thereby forming an overlap. Based on the test data of the conductivity test device, it can be known whether the outer sheath of the coaxial cable to be tested is broken.

[0016] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a structural schematic diagram of a coaxial cable outer skin breakage detection device provided by an embodiment of the present invention;

[0019] Figure 2 It is a schematic structural diagram of a coaxial line to be tested provided by an embodiment of the present invention;

[0020] Figure 3 It is an equivalent circuit diagram of a coaxial line outer skin breakage detection device provided by an embodiment of the present invention;

[0021] Figure 4 It is a structural schematic diagram of another coaxial line outer skin breakage detection device provided by an embodiment of the present invention;

[0022] Figure 5 The present invention provides a flow chart of a method for detecting a broken outer sheath of a coaxial line. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0024] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or devices is not necessarily limited to those steps or devices that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0025] In order to detect whether the outer sheath of the coaxial line is broken, the embodiment of the present invention provides the following technical solution:

[0026] Figure 1 1 is a schematic diagram of the structure of a coaxial cable outer sheath breakage detection device provided by an embodiment of the present invention. Figure 2 This is a schematic diagram of the structure of a coaxial line to be tested. Figure 3 is an equivalent circuit diagram of a coaxial cable outer sheath breakage detection device provided by an embodiment of the present invention. Figure 4 This is a schematic diagram of the structure of another coaxial cable outer sheath breakage detection device provided by an embodiment of the present invention. Figure 1 Combined with Figure 2-Figure 4 As shown, the device for detecting the outer skin damage of the coaxial line includes a first shielding box 400 and a continuity test device 001; the coaxial line 300 to be tested is located in the first shielding box 400, and the continuity test device 001 is located outside the first shielding box 400; the first end of the central conductor 301 of the coaxial line 300 to be tested and the first end of the braided layer 302 of the coaxial line 300 to be tested are connected to the continuity test device 001 through a first connector 002; the second end of the central conductor 301 of the coaxial line 300 to be tested and the second end of the braided layer 302 of the coaxial line 300 to be tested are connected to the continuity test device 001 through a second connector 003; the first shielding box 400 is filled with a conductive gas, and the coaxial line 300 to be tested is located in the first shielding box 400 and is in contact with the conductive gas.

[0027] For example, Figure 1 Seven coaxial lines 300 to be tested are shown. For example, the conductive gas may be hydrogen.

[0028] Among them, Figure 2 As shown, the coaxial line 300 to be tested includes a center conductor 301, an insulating layer 303, a braided layer 302 and an outer jacket 304. The braided layer 302 is a conductive layer with a shielding effect. The braided layer 302 is mostly a mesh structure woven with aluminum foil. There is an insulating layer 303 between the center conductor 301 and the braided layer 302 of the coaxial line 300 to be tested, and the two are welded at different positions, so it can be understood that the coaxial line 300 to be tested is two wires, one wire is the center conductor 301, and the other wire is the braided layer 302.

[0029] Compared with the technical solution in the prior art that the first shielding box 400 is not filled with conductive gas, the technical solution provided by the present invention is: when the first shielding box 400 is filled with conductive gas, the exposed braided layer 302 at the broken part of the outer sheath 304 of the coaxial cable 300 to be tested will come into contact with the conductive gas, thereby forming an overlap, and according to the test data of the conduction test device 001, it can be known whether the outer sheath 304 of the coaxial cable 300 to be tested is broken.

[0030] Optionally, on the basis of the above technical solution, the first connector 002 includes a first test board 100 and a first connecting wire 700, the first test board 100 is provided with a first connector pad 101 and a first braided pad 102, the first connecting wire 700 includes a first conductor connecting wire and a first braided connecting wire; the second connector 003 includes a second test board 200 and a second connecting wire 701, the second test board 200 is provided with a second connector pad 201 and a second braided pad 202, the second connecting wire 701 includes a second conductor connecting wire and a second braided connecting wire; there are N coaxial lines 300 to be tested, and the value of N includes an integer greater than or equal to 2; the central conductor 301 at the first end of the coaxial line 300 to be tested is electrically connected to the first conductor connecting wire through the first connector pad 101; the braided layer 302 at the first end of the coaxial line 300 to be tested is connected to the first conductor connecting wire through the first braided pad 102 Electrically connected to the first braided connecting wire; the first braided solder pad 102 is grounded; the central conductor 301 of the second end of the coaxial line 300 to be tested is electrically connected to the second conductor connecting wire through the second connector solder pad 201; the braided layer 302 of the second end of the coaxial line 300 to be tested is electrically connected to the second braided connecting wire through the second braided solder pad 202; the second braided solder pad 202 is grounded; the central conductor 301 of the coaxial line 300 to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto constitute a first path; the braided layer 302 of the coaxial line 300 to be tested and the first braided connecting wire and the second braided connecting wire connected thereto constitute a second path; the first conductor connecting wire, the first braided connecting wire, the second conductor connecting wire and the second braided connecting wire are respectively connected to the conduction test device 001; the first test board 100 is insulated from the conductive gas, and the second test board 200 is insulated from the conductive gas.

[0031] For example, Figure 1 Seven coaxial lines 300 to be tested are shown. The central conductor 301 of the coaxial line 300 to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto form a first path: path L1, path L2, path L3, path L4, path L5 and path L7.

[0032] Optionally, based on the above technical solution, the conduction test device 001 includes a first power supply terminal 01, a first test terminal 03 and a second test terminal 02; N second paths are connected to form a second total path L8; during testing, two of the N first paths and the second total path L8 are selected as the first selected path A1 and the second selected path A2; the first power supply terminal 01 is used to apply a preset voltage to the first selected path A1, the first test terminal 03 is used to test the voltage of the first selected path A1, and the second test terminal 02 is used to test the voltage of the second selected path A2; the conduction test device 001 is used to test the insulation resistance between the first selected path A1 and the second selected path A2.

[0033] Specifically, when the first shielding box 400 is filled with conductive gas, the exposed braided layer 302 at the broken part of the outer sheath 304 of the coaxial cable 300 to be tested will come into contact with the conductive gas, thereby forming a overlap. According to the value of the insulation resistance between the first selected path A1 and the second selected path A2 tested by the conductivity test device 001, it can be known whether the outer sheath 304 of the coaxial cable 300 to be tested is broken.

[0034] Optionally, based on the above technical solution, the voltage of the first power supply terminal 01 is greater than or equal to 300V; the conduction test device 001 further includes a reference resistor Rf, a first end of the reference resistor Rf is grounded, and a second end of the reference resistor Rf is electrically connected to the second test terminal 02; and the insulation resistance satisfies the following relationship:

[0035] IR=Rf*(Vdut-Vref) / Vref

[0036] Wherein, IR is the insulation resistance between the first selected path A1 and the second selected path A2, Rf is the resistance value of the reference resistor, Vdut is the voltage measured at the first test terminal 03, and Vref is the voltage measured at the second test terminal 02.

[0037] When the coaxial line 300 to be tested in the first selected path A1 and the coaxial line 300 to be tested in the second selected path A2 do not have a broken skin, when the voltage Vref of the second test terminal 02 approaches 0V, the current Vref / Rf passing through the insulation resistance approaches 0, and the insulation resistance is very large, and the insulation resistance is greater than or equal to 1000MΩ. When the coaxial line 300 to be tested in the first selected path A1 or the second selected path A2 has a broken skin, Vdut-Vref approaches 0, and the insulation resistance is very small, less than or equal to 20MΩ.

[0038] Optionally, on the basis of the above technical solution, it also includes a second shielding box 500 and a third shielding box 600; the first test board is located in the second shielding box 500 and is insulated from the conductive gas; the second shielding box 500 is located in the first shielding box 400; the second test board 200 is located in the third shielding box 600 and is insulated from the conductive gas; the third shielding box 600 is located in the first shielding box 400.

[0039] Optionally, based on the above technical solution, the first test board 100 also includes a first ground piece 104 and a first common ground piece 103, and the second test board 200 also includes a second ground piece 204 and a second common ground piece 203; the first woven pad 102 is electrically connected to the first common ground piece 104 and the first common ground piece 103, and the second woven pad 202 is electrically connected to the second common ground piece 204 and the second common ground piece 203, so as to realize that the woven layer 302 of the coaxial line 300 to be tested and the first woven connecting wire and the second woven connecting wire connected thereto form a plurality of second paths connected to form a second total path L8.

[0040] The embodiment of the present invention also provides a method for detecting a broken outer sheath of a coaxial line. Figure 5 As shown, Figure 5 1 is a flow chart of a method for detecting a coaxial cable outer layer being damaged provided by an embodiment of the present invention. The method for detecting a coaxial cable outer layer being damaged includes the following steps:

[0041] S110. The central conductor of the coaxial line to be tested and the first conductor connecting wire and the second conductor connecting wire form a first path, and the braided layer of the coaxial line to be tested and the first braided connecting wire and the second braided connecting wire form a second path; the coaxial line to be tested includes N, and the value of N includes an integer greater than or equal to 2; the N second paths are connected to form a second total path.

[0042] S120 , applying a preset voltage to the first selected path using a power supply terminal of the conduction test device.

[0043] S130, using a first test terminal of a conduction test device to measure a voltage of a first selected path.

[0044] S140, using a second test terminal of a conduction test device to measure a voltage of a second selected path; the conduction test device comprises a reference resistor, a first terminal of the reference resistor is grounded, and a second terminal of the reference resistor is electrically connected to the second test terminal.

[0045] S150, calculating the insulation resistance between the first selected path and the second selected path according to the preset voltage, the voltage of the first selected path measured by the first test terminal, the voltage of the second selected path measured by the second test terminal, and the reference resistance.

[0046] Compared with the prior art technical solution in which the first shielding box 400 is not filled with conductive gas, the technical solution provided by the present invention is as follows: when the first shielding box 400 is filled with conductive gas, the braided layer 302 exposed at the broken skin of the outer sheath 304 of the coaxial line 300 to be tested will contact with the conductive gas, thereby forming an overlap, and whether the outer sheath 304 of the coaxial line 300 to be tested is broken can be known according to the test data of the conduction test device 001. Specifically, when the first shielding box 400 is filled with conductive gas, the braided layer 302 exposed at the broken skin of the outer sheath 304 of the coaxial line 300 to be tested will contact with the conductive gas, thereby forming an overlap, and whether the outer sheath 304 of the coaxial line 300 to be tested is broken can be known according to the value of the insulation resistance between the first selected path A1 and the second selected path A2 tested by the conduction test device 001.

[0047] Optionally, on the basis of the above technical solution, the device for detecting the broken skin of the coaxial line includes a first shielding box 400 and a continuity test device 001; the coaxial line 300 to be tested is located in the first shielding box 400, and the continuity test device 001 is located outside the first shielding box 400; the first end of the center conductor 301 of the coaxial line 300 to be tested and the first end of the braided layer 302 of the coaxial line 300 to be tested are connected to the continuity test device 001 through a first connector 002; the second end of the center conductor 301 of the coaxial line 300 to be tested and the second end of the braided layer 302 of the coaxial line 300 to be tested are connected to the continuity test device 001 through a second connector 003; the first shielding box 400 is filled with conductive gas, and the coaxial line 300 to be tested is located in the first shielding box 400 and is in contact with the conductive gas.

[0048] For example, Figure 1 Seven coaxial lines 300 to be tested are shown. For example, the conductive gas may be hydrogen.

[0049] Among them, Figure 2 As shown, the coaxial line 300 to be tested includes a center conductor 301, an insulating layer 303, a braided layer 302 and an outer jacket 304. The braided layer 302 is a conductive layer with a shielding effect. The braided layer 302 is mostly a mesh structure woven with aluminum foil. There is an insulating layer 303 between the center conductor 301 and the braided layer 302 of the coaxial line 300 to be tested, and the two are welded at different positions, so it can be understood that the coaxial line 300 to be tested is two wires, one wire is the center conductor 301, and the other wire is the braided layer 302.

[0050] Compared with the technical solution in the prior art that the first shielding box 400 is not filled with conductive gas, the technical solution provided by the present invention is: when the first shielding box 400 is filled with conductive gas, the exposed braided layer 302 at the broken part of the outer sheath 304 of the coaxial cable 300 to be tested will come into contact with the conductive gas, thereby forming an overlap, and according to the test data of the conduction test device 001, it can be known whether the outer sheath 304 of the coaxial cable 300 to be tested is broken.

[0051] It should be noted that the coaxial cable sheath breakage detection device is mainly used to detect whether the sheath 304 is broken, and should not be used to detect whether the braided layer 302 is broken, because the braided layer 302 is mostly woven with aluminum foil to form a mesh structure. A broken insulation layer will cause the shielding layer and the center conductor to be connected, causing a short circuit, which can be detected in conventional loop detection.

[0052] Optionally, on the basis of the above technical solution, the first connector 002 includes a first test board 100 and a first connecting wire 700, the first test board 100 is provided with a first connector pad 101 and a first braided pad 102, the first connecting wire 700 includes a first conductor connecting wire and a first braided connecting wire; the second connector 003 includes a second test board 200 and a second connecting wire 701, the second test board 200 is provided with a second connector pad 201 and a second braided pad 202, the second connecting wire 701 includes a second conductor connecting wire and a second braided connecting wire; there are N coaxial lines 300 to be tested, and the value of N includes an integer greater than or equal to 2; the central conductor 301 at the first end of the coaxial line 300 to be tested is electrically connected to the first conductor connecting wire through the first connector pad 101; the braided layer 302 at the first end of the coaxial line 300 to be tested is connected to the first conductor connecting wire through the first braided pad 102 Electrically connected to the first braided connecting wire; the first braided solder pad 102 is grounded; the central conductor 301 of the second end of the coaxial line 300 to be tested is electrically connected to the second conductor connecting wire through the second connector solder pad 201; the braided layer 302 of the second end of the coaxial line 300 to be tested is electrically connected to the second braided connecting wire through the second braided solder pad 202; the second braided solder pad 202 is grounded; the central conductor 301 of the coaxial line 300 to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto constitute a first path; the braided layer 302 of the coaxial line 300 to be tested and the first braided connecting wire and the second braided connecting wire connected thereto constitute a second path; the first conductor connecting wire, the first braided connecting wire, the second conductor connecting wire and the second braided connecting wire are respectively connected to the conduction test device 001; the first test board 100 is insulated from the conductive gas, and the second test board 200 is insulated from the conductive gas.

[0053] For example, Figure 1Seven coaxial lines 300 to be tested are shown. The central conductor 301 of the coaxial line 300 to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto form a first path: path L1, path L2, path L3, path L4, path L5 and path L7.

[0054] Optionally, based on the above technical solution, the conduction test device 001 includes a first power supply terminal 01, a first test terminal 03 and a second test terminal 02; N second paths are connected to form a second total path L8; during testing, two of the N first paths and the second total path L8 are selected as the first selected path A1 and the second selected path A2; the first power supply terminal 01 is used to apply a preset voltage to the first selected path A1, the first test terminal 03 is used to test the voltage of the first selected path A1, and the second test terminal 02 is used to test the voltage of the second selected path A2; the conduction test device 001 is used to test the insulation resistance between the first selected path A1 and the second selected path A2.

[0055] Specifically, when the first shielding box 400 is filled with conductive gas, the exposed braided layer 302 at the broken part of the outer sheath 304 of the coaxial cable 300 to be tested will come into contact with the conductive gas, thereby forming a overlap. According to the value of the insulation resistance between the first selected path A1 and the second selected path A2 tested by the conductivity test device 001, it can be known whether the outer sheath 304 of the coaxial cable 300 to be tested is broken.

[0056] Optionally, based on the above technical solution, the voltage of the first power supply terminal 01 is greater than or equal to 300V; the conduction test device 001 further includes a reference resistor Rf, a first end of the reference resistor Rf is grounded, and a second end of the reference resistor Rf is electrically connected to the second test terminal 02; and the insulation resistance satisfies the following relationship:

[0057] IR=Rf*(Vdut-Vref) / Vref

[0058] Wherein, IR is the insulation resistance between the first selected path A1 and the second selected path A2, Rf is the resistance value of the reference resistor, Vdut is the voltage measured at the first test terminal 03, and Vref is the voltage measured at the second test terminal 02.

[0059] When the coaxial line 300 to be tested in the first selected path A1 and the coaxial line 300 to be tested in the second selected path A2 do not have a broken skin, when the voltage Vref of the second test terminal 02 approaches 0V, the current Vref / Rf passing through the insulation resistance approaches 0, and the insulation resistance is very large, and the insulation resistance is greater than or equal to 1000MΩ. When the coaxial line 300 to be tested in the first selected path A1 or the second selected path A2 has a broken skin, Vdut-Vref approaches 0, and the insulation resistance is very small, less than or equal to 20MΩ.

[0060] Optionally, on the basis of the above technical solution, it also includes a second shielding box 500 and a third shielding box 600; the first test board is located in the second shielding box 500 and is insulated from the conductive gas; the second shielding box 500 is located in the first shielding box 400; the second test board 200 is located in the third shielding box 600 and is insulated from the conductive gas; the third shielding box 600 is located in the first shielding box 400.

[0061] Optionally, based on the above technical solution, the first test board 100 also includes a first ground piece 104 and a first common ground piece 103, and the second test board 200 also includes a second ground piece 204 and a second common ground piece 203; the first woven pad 102 is electrically connected to the first common ground piece 104 and the first common ground piece 103, and the second woven pad 202 is electrically connected to the second common ground piece 204 and the second common ground piece 203, so as to realize that the woven layer 302 of the coaxial line 300 to be tested and the first woven connecting wire and the second woven connecting wire connected thereto form a plurality of second paths connected to form a second total path L8.

[0062] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0063] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coaxial cable outer sheath breakage detection device, characterized in that: It includes a first shielding box and a conduction test device; The coaxial line to be tested is located in the first shielding box, and the continuity test device is located outside the first shielding box; The first end of the central conductor of the coaxial line to be tested and the first end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a first connector; the second end of the central conductor of the coaxial line to be tested and the second end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a second connector; the first shielding box is filled with conductive gas, and the coaxial line to be tested is located in the first shielding box and in contact with the conductive gas.

2. The coaxial cable outer sheath breakage detection device according to claim 1, characterized in that: The first connecting member includes a first test board and a first connecting wire, the first test board is provided with a first connector pad and a first braided pad, and the first connecting wire includes a first conductor connecting wire and a first braided connecting wire; The second connecting member includes a second test board and a second connecting wire, the second test board is provided with a second connector pad and a second braided pad, and the second connecting wire includes a second conductor connecting wire and a second braided connecting wire; There are N coaxial lines to be tested, and the value of N includes an integer greater than or equal to 2; the central conductor of the first end of the coaxial line to be tested is electrically connected to the first conductor connecting wire through the first connector pad; the braided layer of the first end of the coaxial line to be tested is electrically connected to the first braided connecting wire through the first braided pad; the first braided pad is grounded; the central conductor of the second end of the coaxial line to be tested is electrically connected to the second conductor connecting wire through the second connector pad; the braided layer of the second end of the coaxial line to be tested is electrically connected to the second braided connecting wire through the second braided pad; the second braided pad is grounded; the central conductor of the coaxial line to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto constitute a first path; the braided layer of the coaxial line to be tested and the first braided connecting wire and the second braided connecting wire connected thereto constitute a second path; the first conductor connecting wire, the first braided connecting wire, the second conductor connecting wire and the second braided connecting wire are respectively connected to the conduction test device; The first test board and the conductive gas are insulated from each other, and the second test board and the conductive gas are insulated from each other.

3. The coaxial cable outer sheath breakage detection device according to claim 1 is characterized in that The conduction test device comprises a first power supply terminal, a first test terminal and a second test terminal; N second passages are connected to form a second total passage; During the test, two of the N first paths and the second total paths are selected as the first selected path and the second selected path; The first power supply terminal is used to apply a preset voltage to the first selected path, the first test terminal is used to test the voltage of the first selected path, and the second test terminal is used to test the voltage of the second selected path; the conduction test device is used to test the insulation resistance between the first selected path and the second selected path.

4. The coaxial cable outer sheath breakage detection device according to claim 3, characterized in that: The voltage of the first power supply terminal is greater than or equal to 300V; The conduction test device further comprises a reference resistor, a first end of the reference resistor is grounded, and a second end of the reference resistor is electrically connected to the second test end; The insulation resistance satisfies the following relationship: IR=Rf*(Vdut-Vref) / Vref Wherein, IR is the insulation resistance between the first selected path and the second selected path, Rf is the resistance value of the reference resistor, Vdut is the voltage measured at the first test end, and Vref is the voltage measured at the second test end.

5. The coaxial cable outer sheath breakage detection device according to claim 2, characterized in that: Also includes a second shielding box and a third shielding box; The first test board is located in the second shielding box and is insulated from the conductive gas; The second shielding box is located inside the first shielding box; The second test board is located in the third shielding box and is insulated from the conductive gas; The third shielding box is located in the first shielding box.

6. The coaxial cable outer sheath breakage detection device according to claim 2, characterized in that: The first test board also includes a first ground sheet and a first common ground sheet, and the second test board also includes a second ground sheet and a second common ground sheet; the first woven pad is electrically connected to the first common ground sheet through the first ground sheet, and the second woven pad is electrically connected to the second common ground sheet through the second ground sheet.

7. A method for detecting a broken outer sheath of a coaxial cable, characterized in that: include: The central conductor of the coaxial line to be tested and the first conductor connecting wire and the second conductor connecting wire form a first path, and the braided layer of the coaxial line to be tested and the first braided connecting wire and the second braided connecting wire form a second path; the coaxial line to be tested includes N, and the value of N includes an integer greater than or equal to 2; the N second paths are connected to form a second total path; Applying a preset voltage to the first selected path using a power supply terminal of the conduction test device; Measuring the voltage of the first selected path using the first test terminal of the conduction test device; The voltage of the second selected path is measured by using a second test terminal of a continuity test device; the continuity test device comprises a reference resistor, a first terminal of the reference resistor is grounded, and a second terminal of the reference resistor is electrically connected to the second test terminal; The insulation resistance between the first selected path and the second selected path is calculated according to the preset voltage, the voltage of the first selected path measured by the first test terminal, the voltage of the second selected path measured by the second test terminal, and the reference resistance.

8. The method for detecting a broken outer sheath of a coaxial cable according to claim 7, characterized in that: The coaxial line to be tested is located in a first shielding box, and the continuity test device is located outside the first shielding box; The first end of the central conductor of the coaxial line to be tested and the first end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a first connector; the second end of the central conductor of the coaxial line to be tested and the second end of the braided layer of the coaxial line to be tested are connected to the continuity test device through a second connector; the first shielding box is filled with conductive gas, and the coaxial line to be tested is located in the first shielding box and in contact with the conductive gas.

9. The method for detecting a broken outer sheath of a coaxial cable according to claim 8, characterized in that: The first connecting member includes a first test board and a first connecting wire, the first test board is provided with a first connector pad and a first braided pad, and the first connecting wire includes a first conductor connecting wire and a first braided connecting wire; The second connecting member includes a second test board and a second connecting wire, the second test board is provided with a second connector pad and a second braided pad, and the second connecting wire includes a second conductor connecting wire and a second braided connecting wire; There are N coaxial lines to be tested, and the value of N includes an integer greater than or equal to 2; the central conductor of the first end of the coaxial line to be tested is electrically connected to the first conductor connecting wire through the first connector pad; the braided layer of the first end of the coaxial line to be tested is electrically connected to the first braided connecting wire through the first braided pad; the first braided pad is grounded; the central conductor of the second end of the coaxial line to be tested is electrically connected to the second conductor connecting wire through the second connector pad; the braided layer of the second end of the coaxial line to be tested is electrically connected to the second braided connecting wire through the second braided pad; the second braided pad is grounded; the central conductor of the coaxial line to be tested and the first conductor connecting wire and the second conductor connecting wire connected thereto constitute a first path; the braided layer of the coaxial line to be tested and the first braided connecting wire and the second braided connecting wire connected thereto constitute a second path; the first conductor connecting wire, the first braided connecting wire, the second conductor connecting wire and the second braided connecting wire are respectively connected to the conduction test device; The first test board and the conductive gas are insulated from each other, and the second test board and the conductive gas are insulated from each other.

10. The method for detecting a broken outer sheath of a coaxial cable according to claim 7, characterized in that: The conduction test device comprises a first power supply terminal, a first test terminal and a second test terminal; N of the second passages are connected to form a second total passage; During the test, two of the N first paths and the second total paths are selected as the first selected path and the second selected path; The first power supply terminal is used to apply a preset voltage to the first selected path, the first test terminal is used to test the voltage of the first selected path, and the second test terminal is used to test the voltage of the second selected path; the conduction test device is used to test the insulation resistance between the first selected path and the second selected path.

11. The method for detecting a broken outer sheath of a coaxial cable according to claim 10, characterized in that: The voltage of the first power supply terminal is greater than or equal to 300V; The conduction test device further comprises a reference resistor, a first end of the reference resistor is grounded, and a second end of the reference resistor is electrically connected to the second test end; The insulation resistance satisfies the following relationship: IR=Rf*(Vdut-Vref) / Vref Wherein, IR is the insulation resistance between the first selected path and the second selected path, Rf is the resistance value of the reference resistor, Vdut is the voltage measured at the first test end, and Vref is the voltage measured at the second test end.

12. The method for detecting a broken outer sheath of a coaxial cable according to claim 9, characterized in that: The first test board is located in the second shielding box and is insulated from the conductive gas; The second shielding box is located inside the first shielding box; The second test board is located in the third shielding box and is insulated from the conductive gas; The third shielding box is located in the first shielding box.

13. The method for detecting a broken outer sheath of a coaxial cable according to claim 9, characterized in that: The first test board also includes a first ground sheet and a first common ground sheet, and the second test board also includes a second ground sheet and a second common ground sheet; the first woven pad is electrically connected to the first common ground sheet through the first ground sheet, and the second woven pad is electrically connected to the second common ground sheet through the second ground sheet.

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