An on-line fast detection cable conductor resistance device

Abstract

This invention discloses an online rapid detection device for cable conductor resistance, comprising a fixed-position detection system and a moving-position detection system. The fixed-position detection system includes a main body and a control mechanism. The control mechanism includes a control box, a rotating hinge fixedly mounted on the top of the control box, a box cover rotatably connected to the control box via the rotating hinge, a sealing plate fixedly connected to the front of the box cover, a signal control board embedded in the front of the box cover, a display screen embedded in the top of the control box, control keys fixedly mounted on the top of the control box, a base fixedly connected to the bottom of the control box, and an alarm mechanism provided at the bottom of the main body. The invention features a lower clamp fixedly connected to the top of the main body, and upper and lower clamps that can be fixed to the outside of the cable, allowing the resistance detection board to fit snugly against the cable. This facilitates real-time monitoring of the cable resistance, simplifies installation, improves installation efficiency, and enhances monitoring convenience.

Description

Technical Field

[0001] This invention relates to the field of wire and cable safety testing technology, specifically to an online rapid testing device for cable conductor resistance. Background Technology

[0002] With the rapid development of society, the demand for electricity resources is growing exponentially, making the role of wires and cables increasingly prominent. Whether for daily life or industrial production, wires and cables play a crucial role. Their performance directly affects the user's final electricity consumption and production efficiency. Against this backdrop, the safety inspection of wires and cables has become an essential part of the work for relevant personnel. In various inspections of wire and cable equipment, the resistance value of the wires and cables significantly impacts power supply safety and efficiency. The temperature of the wires and cables effectively reflects their operating condition. Therefore, by detecting the resistance of wires and cables, effective safety inspection can be achieved. However, existing technologies have the following problems:

[0003] 1. An existing online rapid cable conductor resistance detection device is inconvenient to install and fix, and remote detection is not possible. It is also slow for staff to fix and maintain it.

[0004] 2. An existing online rapid cable conductor resistance testing device cannot protect the device and the cable. The device is exposed and easily damaged, and the cable may be damaged during installation. Summary of the Invention

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0006] An online rapid detection device for cable conductor resistance includes a fixed-position detection system and a moving-position detection system. The fixed-position detection system comprises a main body and a control mechanism. The control mechanism includes a control box, a rotating hinge fixedly mounted on the top of the control box, a box cover rotatably connected to the control box via the rotating hinge, a sealing plate fixedly connected to the front of the box cover, a signal control board embedded in the front of the box cover, a display screen embedded in the top of the control box, control keys fixedly mounted on the top of the control box, a base fixedly connected to the bottom of the control box, and an alarm mechanism provided at the bottom of the main body, the alarm mechanism including a housing.

[0007] A further improvement of the technical solution of the present invention is that: the top of the outer shell is provided with a connecting thread, the outer shell is threaded to the bottom of the main body through the connecting thread, and a battery is provided inside the outer shell.

[0008] A further improvement of the technical solution of the present invention is that: an indicator is fixedly installed on the front of the outer casing, a pointer is rotatably connected inside the indicator, and a trigger plate is fixedly connected to the front of the indicator.

[0009] A further improvement of the technical solution of the present invention is that: a detection mechanism is provided on the top of the main body, the detection mechanism includes a lower clamping plate, and the lower clamping plate is fixedly connected to the top of the main body.

[0010] A further improvement of the technical solution of the present invention is that: a spring plate is fixedly connected to the top of the lower clamping plate, and a base plate is fixedly connected to the top of the spring plate.

[0011] A further improvement of the technical solution of the present invention is that: a resistance detection plate is embedded in the top of the base plate, and a fixing mechanism is provided on the top of the detection mechanism, the fixing mechanism including an upper clamping plate.

[0012] A further improvement of the technical solution of the present invention is that: both sides of the upper clamping plate are fixedly connected to mounting plates, the mounting plates have mounting holes inside, and mounting bolts are threaded into the mounting holes.

[0013] A further improvement of the technical solution of the present invention is that: the upper clamping plate is fixedly connected to the lower clamping plate by mounting bolts, a protective pad is fixedly connected to the bottom of the upper clamping plate, and a circuit board is fixedly connected to the bottom of the upper clamping plate.

[0014] A further improvement of the technical solution of the present invention is that a data transmission module is fixedly connected to the bottom of the circuit board, and a data receiving module is fixedly connected to the bottom of the circuit board.

[0015] A further improvement of the technical solution of the present invention is as follows: the displacement detection system includes a left collar and a right collar that are detachably sleeved on the outside of the cable and are structurally symmetrical; multiple arc-shaped elastic rods with outward bulging in the middle are connected between the left collar and the right collar; the multiple arc-shaped elastic rods are evenly distributed around the outer circumference of the cable; arc-shaped piezoelectric ceramic strips are fixedly attached to the curved part of the arc-shaped elastic rod on the side close to the cable and the side away from the cable, respectively; the controller controls the external circuit to drive the extension or shortening of the piezoelectric ceramic strips; the left collar includes multiple connecting bodies; the bottom surface of the connecting body abuts against the outer surface of the cable; a fixing slot is provided on one side of the connecting body; the arc-shaped elastic rods are detachably inserted and locked into the fixing slots; an elastically stretchable arc rod is connected between adjacent connecting bodies; multiple arc-shaped conductive rods are embedded in the left collar along its circumference; under static conditions, the ends of adjacent arc-shaped conductive rods are electrically contacted in the middle of the elastically stretchable arc rod; the controller receives and analyzes the magnitude of the induced current generated by the conductive ring formed by the connection of multiple arc-shaped conductive rods.

[0016] A further improvement of the technical solution of the present invention is that: a slot is formed on the side of the connector that contacts the cable; an electromagnet is fixedly installed at the bottom of the slot; a telescopic column is slidably sleeved in the slot; a permanent magnet is fixed at one end of the telescopic column located in the slot, and a friction head is fixed at the other end facing out of the slot; the telescopic column is slightly inclined to the side of the arc-shaped elastic rod; a return spring is connected between the telescopic column and the electromagnet.

[0017] A further improvement to the technical solution of the present invention is that the monitoring method of the movement detection system includes the following steps:

[0018] ①Assemble the left and right collars and put them on the outside of the cable respectively. Then, fix multiple arc-shaped elastic rods into the fixing slots to form a spindle-shaped frame structure.

[0019] ② The controller energizes the electromagnet on the right collar and pushes the telescopic column out of the slot through repulsion to squeeze the cable surface, forming a clamping force;

[0020] ③ The controller controls the piezoelectric ceramic strip on the side of the curved section of the arc-shaped elastic rod closest to the cable to extend, while the piezoelectric ceramic strip on the side opposite to the cable shortens. This drives the curved section of the arc-shaped elastic rod to extend to both sides. Since the right collar on the right side is clamped to the cable surface through the telescopic column, the entire horizontal extension of the arc-shaped elastic rod is directed towards the left collar, pushing the left collar to the left. When the middle of the arc-shaped elastic rod extends to both ends, the extension of its arc structure causes both ends to tend to deflect outwards from the cable, thereby causing the connector to move outwards from the cable. This creates a gap between the connector and the cable surface, making it easier for the left collar to be pushed and moved, while the right collar remains clamped to the cable through the telescopic column. As each connector moves outwards from the cable, the elastic rod can be stretched to become longer, thereby increasing the end spacing between the embedded arc-shaped conductive rods, forming gaps and no longer making electrical contact. As a result, a loop cannot be formed, and therefore no induced current can be generated.

[0021] ④ The controller controls the extension of the telescopic column of the left collar to tighten the cable, while the telescopic column of the right collar returns to its initial position to loosen the clamping on the cable; the controller controls the piezoelectric ceramic strip on the side closest to the cable at the bend in the middle of the arc-shaped elastic rod to shorten, while the piezoelectric ceramic strip on the side opposite to the cable to extend, thereby driving the bending degree of the arc-shaped elastic rod at the middle bend to increase; thus pulling the distance between the two ends of the arc-shaped elastic rod to shorten. Since the left collar on the left side is tightening the cable surface through the telescopic column at this time, the entire horizontal shrinkage of the arc-shaped elastic rod is compensated by the left collar moving to the left; therefore, the right collar moves to the left; during the process of increasing the bending degree at the middle bend of the arc-shaped elastic rod, its arc structure makes its two ends tend to deflect and squeeze towards the cable surface, so that the ends between the arc-shaped conductive rods embedded in it maintain electrical contact, thereby forming a loop to generate induced current, which is received and analyzed by the controller; at this time, the induced current generated at the left collar is static because it is fixed; the right collar moves to the left, and generates induced current throughout the movement, which is dynamic and is received and analyzed by the controller.

[0022] ⑤ Repeating steps ② to ④ will enable the motion detection system to continuously move along the cable and continuously receive and analyze induced current data. Based on this data, the change in current in the cable can be deduced. Then, based on the product relationship between voltage, current and resistance, since the cable voltage is relatively stable, the cable resistance can be calculated. As the motion detection system moves along the cable, the resistance change at various points on the cable can be monitored and calculated.

[0023] Due to the adoption of the above technical solution, the technical progress achieved by this invention compared to the prior art is as follows:

[0024] 1. This invention provides an online rapid detection device for cable conductor resistance. The fixed-position detection system utilizes an upper clamp, a lower clamp, and a resistance detection plate. The lower clamp is fixedly connected to the top of the main body, and the upper clamp is fixedly connected to the lower clamp by mounting bolts. The upper and lower clamps can be fixed to the outside of the cable, allowing the resistance detection plate to fit snugly against the cable. This facilitates real-time monitoring of the cable resistance and is easy to install, improving the efficiency of installation and the convenience of monitoring.

[0025] 2. This invention provides an online rapid cable conductor resistance detection device. The fixed-position detection system utilizes an indicator, a pointer, and a trigger plate. The indicator is fixedly installed on the front of the housing, and the pointer rotates inside the indicator. The rotation of the pointer indicates the resistance measured by the resistance detection plate. The trigger plate is fixed on the front of the indicator and is fixed at the corresponding scale for the maximum and minimum resistance values. When the pointer contacts the trigger plate, an alarm message is displayed, which helps to alert the operator that the resistance value is outside the normal range.

[0026] 3. This invention provides an online rapid detection device for cable conductor resistance. The fixed-position detection system, through the joint action of the control box and the signal control board, allows the operator to easily adjust the data of the resistance detection board using the control keys on the display screen on the top of the control box. The display screen is easy for the operator to observe. The signal control board is fixed on the front of the box cover and can remotely transmit the adjustment signal to achieve remote detection, providing convenience for the operator and improving the operator's work efficiency.

[0027] 4. This invention provides an online rapid detection device for cable conductor resistance. In the fixed-position detection system, the protective pad is fixedly connected to the bottom of the upper clamping plate under the combined action of the protective pad and the spring plate. The protective pad can protect the data transmission module and the data receiving module, preventing them from being exposed to the outside for a long time and being damaged, thus ensuring the normal operation of the data transmission module and the data receiving module in receiving signals. The spring plate can play a certain buffering role, preventing damage to the cable when the device is fixed.

[0028] 5. This invention provides an online rapid detection device for cable conductor resistance. The moving position detection system utilizes an arc-shaped elastic rod combined with a piezoelectric ceramic strip. By controlling the elongation and shortening of the piezoelectric ceramic strip, the bending curvature of the arc-shaped elastic rod is controlled. Then, the cable supports and limits the ends of the arc-shaped elastic rod, and the left and right collars restrict movement, thus converting the change in the bending curvature of the arc-shaped elastic rod into a change in the distance between its two ends. Combined with the controllable clamping effect of a telescopic column driven by an electromagnet, the position of either end of the arc-shaped elastic rod can be freely selected during the change in distance. The change in distance is entirely reflected by the movement of the other end. By continuously switching the position of one end of the arc-shaped elastic rod, combined with the control of the expansion and contraction of the curved part of the arc-shaped elastic rod, a worm-like movement effect is cleverly achieved. The overall structure is very simple, yet it achieves a highly controllable and stable feeding action along the cable. Furthermore, during the movement of the moving position detection system, the left or right collar alternately clamps the cable, thus ensuring stable, accurate movement and reducing the likelihood of errors or malfunctions.

[0029] 6. This invention provides an online rapid detection device for cable conductor resistance. The moving detection system cleverly integrates segmented arc-shaped conductive rods into the left and right collars. Utilizing the effect of changes in the bending degree of the arc-shaped elastic rod at its middle section on the deflection of its two ends, the segmented arc-shaped conductive rods automatically and continuously switch between disconnected and connected circuits as the monitoring system moves. Furthermore, it simultaneously receives and analyzes induced current generated in both static and moving states, enabling the system to continuously receive and analyze induced current data. Based on this data, it can deduce changes in the cable current. Then, based on the product relationship between voltage, current, and resistance, and since the cable voltage is relatively stable, the cable resistance and its changes can be calculated. As the moving detection system moves along the cable, it can monitor and calculate the resistance data and resistance changes at various points on the cable. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the overall structure of the fixed-position detection system of the present invention;

[0031] Figure 2 This is a schematic diagram of the fixing mechanism of the fixed position detection system of the present invention;

[0032] Figure 3 This is a schematic diagram of the monitoring mechanism of the fixed-position detection system of the present invention;

[0033] Figure 4 This is a schematic diagram of the alarm mechanism of the fixed position detection system of the present invention;

[0034] Figure 5 This is a schematic diagram of the control mechanism of the fixed position detection system of the present invention;

[0035] Figure 6 This is a schematic diagram of the elastic stretchable arc rod of the displacement detection system of the present invention under static stress.

[0036] Figure 7 This is a schematic diagram of the elastic stretchable arc rod of the displacement detection system of the present invention in its extended state.

[0037] Figure 8 This is a schematic diagram of the elastic stretchable arc rod of the displacement detection system of the present invention in the contracted and contracted state.

[0038] Figure 9 This is a schematic diagram of the axial direction of the displacement detection system of the present invention;

[0039] Figure 10 This is an axial schematic diagram of the left collar of the displacement detection system of the present invention;

[0040] Figure 11for Figure 7 Enlarged view of circle A in the middle;

[0041] Figure 12 for Figure 7 Enlarged view of circle B in the middle;

[0042] Figure 13 for Figure 8 Enlarged view of circle C in the middle;

[0043] Figure 14 for Figure 8 Enlarged view of circle D in the middle;

[0044] Figure 15 for Figure 11 A magnified view of the small and medium-sized circles.

[0045] In the diagram: 1. Main body; 2. Control mechanism; 21. Control box; 22. Box cover; 23. Rotating hinge; 24. Display screen; 25. Control keys; 26. Base; 28. Sealing plate; 27. Signal control board; 3. Alarm mechanism; 31. Housing; 32. Battery; 33. Connecting thread; 34. Indicator; 35. Trigger plate; 36. Pointer; 4. Fixing mechanism; 41. Upper clamping plate; 42. Protective pad; 43. Mounting plate; 44. Mounting hole; 45. Circuit board; 46. Data transmission module; 47. 5. Data receiving module; 6. Detection mechanism; 7. Lower clamping plate; 8. Base plate; 9. Spring plate; 10. Resistance detection plate; 11. Mounting bolt; 2. Cable; 3. Left collar; 4. Return spring; 51. Connector; 6. Elastic stretchable arc rod; 7. Arc-shaped conductive rod; 82. Hole slot; 83. Electromagnet; 84. Telescopic column; 85. Permanent magnet; 86. Friction head; 87. Fixing slot; 88. Right collar; 9. Arc-shaped elastic rod; 10. Piezoelectric ceramic strip. Detailed Implementation

[0046] The present invention will be further described in detail below with reference to embodiments:

[0047] like Figure 1-5 As shown, the present invention provides an online rapid detection device for cable conductor resistance, including a fixed-position detection system and a moving-position detection system; the fixed-position detection system includes a main body 1 and a control mechanism 2, the control mechanism 2 includes a control box 21, a rotating hinge 23 is fixedly installed on the top of the control box 21, the control box 21 is rotatably connected to a box cover 22 through the rotating hinge 23, a sealing plate 28 is fixedly connected to the front of the box cover 22, a signal control board 27 is embedded in the front of the box cover 22, a display screen 24 is embedded in the top of the control box 21, a control key 25 is fixedly installed on the top of the control box 21, a base 26 is fixedly connected to the bottom of the control box 21, and an alarm mechanism 3 is provided at the bottom of the main body 1, the alarm mechanism 3 including a housing 31.

[0048] Furthermore, the control box 21 allows staff to easily adjust the data of the resistance detection board 54, the display screen 24 facilitates observation by staff, and the signal control board 27 can remotely transmit adjustment signals to achieve remote detection, providing convenience for staff and improving their work efficiency.

[0049] Furthermore, the top of the outer casing 31 has a connecting thread 33, and the outer casing 31 is threaded to the bottom of the main body 1 through the connecting thread 33. A battery 32 is provided inside the outer casing 31, and an indicator 34 is fixedly installed on the front of the outer casing 31. A pointer 36 is rotatably connected inside the indicator 34, and a trigger plate 35 is fixedly connected to the front of the indicator 34.

[0050] Furthermore, the trigger plate 35 is fixed at the corresponding scale for the maximum and minimum resistance values. When the pointer 36 contacts the trigger plate 35, it will display an alarm message to alert the staff that the resistance value is outside the normal range. The battery 32 can provide power to the device.

[0051] Furthermore, a detection mechanism 5 is provided on the top of the main body 1. The detection mechanism 5 includes a lower clamping plate 51, which is fixedly connected to the top of the main body 1. A spring plate 53 is fixedly connected to the top of the lower clamping plate 51, and a base plate 52 is fixedly connected to the top of the spring plate 53. A resistance detection plate 54 is embedded in the top of the base plate 52. A fixing mechanism 4 is provided on the top of the detection mechanism 5, which includes an upper clamping plate 41.

[0052] Furthermore, the spring plate 53 can provide a certain buffering effect to prevent damage to the cable when the device is fixed, and the resistance detection plate 54 can detect the resistance of the cable.

[0053] Furthermore, mounting plates 43 are fixedly connected to both sides of the upper clamping plate 41. Mounting holes 44 are opened inside the mounting plates 43, and mounting bolts 6 are threaded inside the mounting holes 44. The upper clamping plate 41 is fixedly connected to the lower clamping plate 51 by the mounting bolts 6. A protective pad 42 is fixedly connected to the bottom of the upper clamping plate 41. A circuit board 45 is fixedly connected to the bottom of the upper clamping plate 41. A data transmission module 46 is fixedly connected to the bottom of the circuit board 45. A data receiving module 47 is fixedly connected to the bottom of the circuit board 45.

[0054] Furthermore, the protective pad 42 can protect the data transmission module 46 and the data receiving module 47, preventing them from being damaged due to long-term exposure, and ensuring the normal operation of the data transmission module 46 and the data receiving module 47 in receiving signals.

[0055] The working principle of this fixed position detection system.

[0056] like Figure 1-5 As shown, the lower clamping plate 51 is fixedly connected to the top of the main body 1, and the upper clamping plate 41 is fixedly connected to the lower clamping plate 51 by mounting bolts 6. The upper clamping plate 41 and the lower clamping plate 51 are fixed to the outside of the cable, so that the resistance detection plate 54 is in contact with the cable, which facilitates real-time monitoring of the cable resistance. This design is also simple to install, improving the efficiency of installation and the convenience of monitoring. The indicator 34 is fixedly installed on the front of the housing 31, and the pointer 36 rotates inside the indicator 34. The rotation of the pointer 36 indicates the resistance measured by the resistance detection plate 54. The trigger plate 35 is fixed on the front of the indicator 34, and is fixed at the corresponding scale for the maximum and minimum resistance values. When the pointer 36 contacts the trigger plate 35, an alarm message will be displayed, which will alert the operator if the resistance value exceeds the normal range. The control box 21 has a display screen 24 on top with control keys 25, which allows staff to adjust the data of the resistance detection board 54. The display screen 24 is easy for staff to observe. The signal control board 27 is fixed to the front of the box cover 22 and transmits the adjustment signal remotely to realize remote detection, providing convenience for staff and improving their work efficiency. The protective pad 42 is fixedly connected to the bottom of the upper clamping plate 41. The protective pad 42 protects the data transmission module 46 and the data receiving module 47, preventing them from being exposed to the outside for a long time and ensuring that the data transmission module 46 and the data receiving module 47 can receive signals normally. The spring plate 53 provides a certain buffering effect to prevent damage to the cable when the device is fixed.

[0057] Furthermore, such as Figure 6-15 As shown, the displacement detection system includes a left collar 81 and a right collar 82 that are detachably sleeved on the outside of the cable 7 and are structurally symmetrical. Multiple arc-shaped elastic rods 83 with outwardly bulging centers are connected between the left collar 81 and the right collar 82. These arc-shaped elastic rods 83 are evenly distributed around the outer circumference of the cable 7. Arc-shaped piezoelectric ceramic strips 84 are fixedly attached to the curved portions of the arc-shaped elastic rods 83 on the side closest to the cable 7 and the side opposite to the cable 7, respectively. A controller controls an external circuit to drive the piezoelectric ceramic strips 84 to extend or shorten. The left collar 81 includes multiple connectors 811. The bottom surface of the connector 811 abuts against the outer surface of the cable 7; a fixing slot 819 is provided on one side of the connector 811; the arc-shaped elastic rod 83 is detachably inserted into the fixing slot 819 and locked; an elastic and stretchable arc rod 812 is connected between adjacent connectors 811; multiple arc-shaped conductive rods 813 are embedded in the left collar 81 along its circumference; under static conditions, the ends of adjacent arc-shaped conductive rods 813 are in electrical contact in the middle of the elastic and stretchable arc rod 812; the controller receives and analyzes the magnitude of the induced current generated by the conductive ring formed by the connection of multiple arc-shaped conductive rods 813.

[0058] Furthermore, a slot 814 is formed on the side of the connector 811 that contacts the cable 7; an electromagnet 815 is fixedly installed at the bottom of the slot 814; a telescopic column 816 is slidably sleeved inside the slot 814; a permanent magnet 817 is fixed at one end of the telescopic column 816 located inside the slot 814, and a friction head 818 is fixed at the other end facing out of the slot 814; the telescopic column 816 is slightly inclined towards the side of the arc-shaped elastic rod 83; a return spring 810 is connected between the telescopic column 816 and the electromagnet 815.

[0059] Furthermore, the monitoring method of the movement detection system includes the following steps:

[0060] ①See Figure 6 The left collar 81 and the right collar 82 are respectively assembled and sleeved on the outside of the cable 7, and multiple arc-shaped elastic rods 83 are correspondingly fixed and inserted into the fixing slots 819 to form a spindle-shaped frame structure.

[0061] ②See also Figure 7 The controller controls the electromagnet 815 on the right collar 82 to be energized and pushes the telescopic column 816 out of the slot 814 through repulsion to squeeze the surface of the cable 7, forming a clamping force;

[0062] ③See Figure 7 The controller controls the piezoelectric ceramic strip 84 on the side of the curved section of the arc-shaped elastic rod 83 closest to the cable 7 to extend, while the piezoelectric ceramic strip 84 on the other side facing away from the cable 7 to shorten, thereby driving the curved section of the arc-shaped elastic rod 83 to extend to both sides. Since the right collar 82 on the right side is clamped to the surface of the cable 7 via the telescopic column 816, the entire horizontal extension of the arc-shaped elastic rod 83 is directed towards the left collar 81, pushing the left collar 81 to the left. When the curved section of the arc-shaped elastic rod 83 extends to both ends, the extension of its arc-shaped structure causes its two ends to... The end tends to deflect outwards from the cable 7, thereby causing the connector 811 to move outwards from the cable 7, creating a gap between the connector 811 and the surface of the cable 7. This facilitates the pushing and moving of the left collar 81, while the right collar 82 remains clamped to the cable 7 via the telescopic column 816. As each connector 811 moves outwards from the cable 7, the elastic stretchable arc rod 812 is lengthened, thereby increasing the end spacing between the further embedded arc-shaped conductive rods 813, forming a gap and no longer making electrical contact. As a result, a loop cannot be formed, and therefore no induced current can be generated.

[0063] ④See Figure 8The controller controls the extension of the telescopic post 816 of the left collar 81 to tighten the cable 7, while the telescopic post 816 of the right collar 81 returns to its initial position to loosen the clamping on the cable 7. The controller also controls the piezoelectric ceramic strip 84 on the side of the curved elastic rod 83 closest to the cable 7 to shorten, and the piezoelectric ceramic strip 84 on the side opposite to the cable 7 to extend, thereby increasing the degree of bending at the middle of the curved elastic rod 83. This pulls the distance between the two ends of the curved elastic rod 83 to shorten. Since the left collar 81 on the left side is clamping the surface of the cable 7 through the telescopic post 816 at this time, the horizontal direction of the curved elastic rod 83 is fully extended. The contraction is compensated by the leftward movement of the right collar 82; therefore, the right collar 82 moves to the left; as the bending degree of the curved elastic rod 83 increases at the middle bend, its curved structure causes its two ends to tend to deflect and squeeze towards the surface of the cable 7, so that the ends of the further embedded curved conductive rods 813 maintain electrical contact, thereby forming a loop to generate induced current that is received and analyzed by the controller; at this time, the left collar 81 is fixed, so the induced current generated there is static; the right collar 82 moves to the left, and generates induced current throughout the movement, which is dynamic and is received and analyzed by the controller.

[0064] ⑤ Repeating steps ② to ④ will enable the motion detection system to continuously move along the cable 7 and continuously receive and analyze the induced current data. Based on this data, the change in current in the cable 7 can be deduced. Then, based on the product relationship between voltage, current and resistance, since the voltage of the cable 7 is relatively stable, the resistance of the cable 7 can be calculated. As the motion detection system moves along the cable 7, the resistance change at various points on the cable 7 can be monitored and calculated.

[0065] The present invention has been described in detail above. However, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, any modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. An online rapid detection device for cable conductor resistance, comprising a fixed-position detection system and a moving-position detection system; the fixed-position detection system comprising a main body (1) and a control mechanism (2), characterized in that: The control mechanism (2) includes a control box (21), a rotating hinge (23) is fixedly installed on the top of the control box (21), a box cover (22) is rotatably connected to the control box (21) via the rotating hinge (23), a sealing plate (28) is fixedly connected to the front of the box cover (22), a signal control board (27) is embedded in the front of the box cover (22), a display screen (24) is embedded in the top of the control box (21), a control key (25) is fixedly installed on the top of the control box (21), and a base (25) is fixedly connected to the bottom of the control box (21). 6) An alarm mechanism (3) is provided at the bottom of the main body (1), and the alarm mechanism (3) includes a housing (31); a detection mechanism (5) is provided at the top of the main body (1), and the detection mechanism (5) includes a lower clamping plate (51), which is fixedly connected to the top of the main body (1); a spring plate (53) is fixedly connected to the top of the lower clamping plate (51), and a base plate (52) is fixedly connected to the top of the spring plate (53); the movement detection system includes a left collar (81) and a right collar (82) that are detachably sleeved on the outside of the cable (7) and are symmetrically structured with each other. The left collar (81) and the right collar (82) are connected by multiple arc-shaped elastic rods (83) that bulge outward from the center; the multiple arc-shaped elastic rods (83) are evenly distributed around the outer circumference of the cable (7); the arc-shaped elastic rods (83) are fixedly attached to the curved part in the middle on the side close to the cable (7) and the side away from the cable (7) respectively; the controller controls the external circuit to drive the piezoelectric ceramic strips (84) to extend or shorten; the left collar (81) includes multiple connectors (811); the bottom surface of the connector (811) abuts against the outer surface of the cable (7). The connecting body (811) is provided with a fixing slot (819) on one side; the arc-shaped elastic rod (83) is detachably inserted and locked into the fixing slot (819); an elastic stretchable arc rod (812) is connected between adjacent connecting bodies (811); multiple arc-shaped conductive rods (813) are embedded in the left collar (81) along its circumference; under static conditions, the ends of adjacent arc-shaped conductive rods (813) are in electrical contact in the middle of the elastic stretchable arc rod (812); the controller receives and analyzes the magnitude of the induced current generated by the conductive ring formed by the connection of multiple arc-shaped conductive rods (813).

2. The online rapid detection device for cable conductor resistance according to claim 1, characterized in that: The top of the outer casing (31) has a connecting thread (33), and the outer casing (31) is threaded to the bottom of the main body (1) through the connecting thread (33). A battery (32) is installed inside the outer casing (31).

3. The online rapid detection device for cable conductor resistance according to claim 1, characterized in that: An indicator (34) is fixedly installed on the front of the housing (31), and a pointer (36) is rotatably connected inside the indicator (34). A trigger plate (35) is fixedly connected to the front of the indicator (34).

4. The online rapid detection device for cable conductor resistance according to claim 1, characterized in that: A resistance detection plate (54) is embedded in the top of the base plate (52), and a fixing mechanism (4) is provided on the top of the detection mechanism (5). The fixing mechanism (4) includes an upper clamping plate (41). Mounting plates (43) are fixedly connected to both sides of the upper clamping plate (41). Mounting holes (44) are opened inside the mounting plates (43), and mounting bolts (6) are threaded inside the mounting holes (44).

5. The online rapid detection device for cable conductor resistance according to claim 4, characterized in that: The upper clamping plate (41) is fixedly connected to the lower clamping plate (51) by mounting bolts (6). A protective pad (42) is fixedly connected to the bottom of the upper clamping plate (41), and a circuit board (45) is fixedly connected to the bottom of the upper clamping plate (41).

6. The online rapid detection device for cable conductor resistance according to claim 5, characterized in that: A data transmission module (46) is fixedly connected to the bottom of the circuit board (45), and a data receiving module (47) is fixedly connected to the bottom of the circuit board (45).

7. The online rapid detection device for cable conductor resistance according to claim 6, characterized in that: The connector (811) has a slot (814) on the side that contacts the cable (7); an electromagnet (815) is fixedly installed at the bottom of the slot (814); a telescopic column (816) is slidably sleeved in the slot (814); a permanent magnet (817) is fixed at one end of the telescopic column (816) located in the slot (814), and a friction head (818) is fixed at the other end facing out of the slot (814); the telescopic column (816) is slightly inclined to the side of the arc-shaped elastic rod (83); a return spring (810) is connected between the telescopic column (816) and the electromagnet (815).

8. The online rapid detection device for cable conductor resistance according to claim 7, characterized in that: The monitoring method of the movement detection system includes the following steps: ①Assemble the left collar (81) and right collar (82) and put them on the outside of the cable (7), and fix multiple arc-shaped elastic rods (83) into the fixing slot (819) to form a spindle-shaped frame structure. ② The controller controls the electromagnet (815) on the right collar (82) to be energized and pushes the telescopic column (816) out of the slot (814) through repulsion to squeeze the surface of the cable (7) and form a clamping force; ③ The controller controls the piezoelectric ceramic strip (84) on the side of the curved section of the arc-shaped elastic rod (83) closest to the cable (7) to extend, and the piezoelectric ceramic strip (84) on the other side away from the cable (7) to shorten, thereby driving the curved section of the arc-shaped elastic rod (83) to extend to both sides; since the right collar (82) on the right side clamps the surface of the cable (7) through the telescopic column (816), the entire horizontal extension of the arc-shaped elastic rod (83) is directed towards the left collar (81), pushing the left collar (81) to the left. When the middle of the arc-shaped elastic rod (83) extends to both ends, the extension of its arc structure makes it Both ends tend to deflect outwards from the cable (7), thereby causing the connector (811) to move outwards from the cable (7), creating a gap between the connector (811) and the surface of the cable (7), which facilitates the pushing and moving of the left collar (81), while the right collar (82) still clamps the cable (7) through the telescopic column (816); as each connector (811) moves outwards from the cable (7), the stretchable elastic arc rod (812) is stretched to make it longer, thereby increasing the end gap between each arc-shaped conductive rod (813) embedded therein, forming a gap and no longer making electrical contact, and thus a loop cannot be formed and therefore no induced current can be generated; ④ The controller controls the telescopic column (816) of the left collar (81) to extend and tighten the cable (7), while the telescopic column (816) of the right collar (82) returns to its initial position and loosens the clamping on the cable (7); the controller controls the piezoelectric ceramic strip (84) on the side of the curved section of the arc-shaped elastic rod (83) near the cable (7) to shorten, and the piezoelectric ceramic strip (84) on the other side away from the cable (7) to extend, thereby driving the curvature of the curved section of the arc-shaped elastic rod (83) to increase; thereby pulling the distance between the two ends of the arc-shaped elastic rod (83) to shorten. Since the left collar (81) on the left side is clamping the surface of the cable (7) through the telescopic column (816) at this time, the arc-shaped elastic rod The entire horizontal contraction of (83) is compensated by the leftward movement of the right collar (82); therefore, the right collar (82) moves to the left; as the bending degree of the arc elastic rod (83) increases at the middle bend, its arc structure causes its two ends to tend to deflect and squeeze towards the surface of the cable (7), so that the ends of each arc conductive rod (813) embedded therein maintain electrical contact, thereby forming a loop to generate induced current which is received and analyzed by the controller; at this time, the left collar (81) is fixed, so the induced current generated there is static; the right collar (82) moves to the left, and generates induced current throughout the movement, which is dynamic and is received and analyzed by the controller; ⑤ Repeat steps ② to ④ to realize that the motion detection system can continuously move along the cable (7) and continuously receive and analyze the induced current data. Based on the data, the change of current in the cable (7) can be deduced. Based on the product relationship between voltage, current and resistance, since the voltage of the cable (7) is relatively stable, the resistance of the cable (7) can be calculated. As the motion detection system moves on the cable (7), the resistance change at various points of the cable (7) can be monitored and calculated.

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