Building circuit detection device with electric leakage positioning function
The building circuit detection device for determining leakage position by cutting the magnetic field has solved the problems of leakage positioning difficulties and blindness of circuit layout in the prior art, and achieved rapid and accurate leakage detection and positioning.
Patent Information
- Application Number
- CN202510680529.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-26
- Publication Date
- 2025-08-22
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
Existing building circuit leakage detection methods are difficult to quickly and accurately locate the leakage position, and lack effective detection methods for the overall layout of the circuit, resulting in increased blindness of detection work and time cost.
A building circuit detection device with leakage positioning function is adopted to determine the leakage position by cutting the magnetic field, and the circuit layout is judged before detection, and the mobile housing, detection components and mobile components are used to achieve rapid positioning.
It realizes rapid and accurate detection and positioning of building leakage locations, improves detection efficiency, and reduces blindness and time costs.
Smart Images
Figure CN120522604A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of building circuit detection, in particular to a building circuit detection device with a leakage locating function. Background Art
[0002] In modern buildings, the safe operation of electrical systems is of vital importance. Circuit leakage not only wastes electricity, but may also cause serious safety accidents such as electrical fires and electric shocks. Traditional building circuit leakage detection methods, such as resistance measurement and segmented troubleshooting, have many limitations. The resistance measurement method requires disconnecting the circuit for measurement, which is cumbersome and may affect normal power supply; the segmented troubleshooting method is inefficient, especially for complex building circuit systems, making it difficult to quickly and accurately locate the leakage position.
[0003] Most existing technologies can only detect whether there is leakage in the circuit, but cannot accurately locate the leakage point. Moreover, before conducting leakage detection, there is often a lack of effective detection methods for the overall layout of the circuit, which makes the detection work somewhat blind, increasing the difficulty and time cost of detection. Therefore, we propose a building circuit detection device with leakage locating function. Summary of the Invention
[0004] In response to the shortcomings of the existing technology, the present invention provides a building circuit detection device with a leakage locating function, which has the advantages of determining the location of leakage by cutting the magnetic field, and at the same time being able to determine the location of wiring before detection, thereby improving detection efficiency. It solves a series of problems in the existing technology, such as the difficulty in accurately locating building line leakage and the certain blindness to the overall circuit layout before detection.
[0005] To achieve the above object, the present invention provides the following technical solution: a building circuit detection device with a leakage locating function, comprising:
[0006] A movable housing, wherein four sets of wheel hubs are symmetrically fixed at the four corners of the bottom of the movable housing;
[0007] The detection component is used to detect the magnetic field of normal building circuits and the magnetic field of abnormal building circuits. The detection component includes a detection device housing installed inside a mobile housing. Four groups of fixed rods are symmetrically fixed on the left and right sides of the inner wall of the detection device housing. Signal amplifiers are fixed to the opposite sides of the four groups of fixed rods. The inner wall of the signal amplifier is rotatably connected to a coil. The coil is used to cut the magnetic field of the building circuit and convert mechanical energy into electrical energy. A panel is fixed on the front side of the signal amplifier, and a pointer is rotatably connected to the center of the panel.
[0008] It should be mentioned that the magnetic field difference between normal circuit and leakage circuit is:
[0009] For a normally energized conductor, the magnetic field strength around it follows Ampere's circuit theorem, and the magnetic field strength at a distance r from the center of the conductor is: where μ0 = 4π × 10 -7 H / m is the magnetic permeability of vacuum, I is the current in the conductor;
[0010] For a leakage circuit, the leakage is equivalent to an additional current I 1 , resulting in local magnetic field superposition and the formation of abnormal magnetic field distribution: Among them B 漏散 It is the scattered magnetic field generated by leakage current in inhomogeneous media, which is related to the leakage path and the magnetic permeability of the building material.
[0011] A moving component is used to drive the detection device housing to move.
[0012] Preferably, the moving assembly includes four groups of connecting shafts symmetrically connected to the front and rear sides of the detection device housing, a fixed base is fixed to the bottom of the inner wall of the detection device housing, a motor is fixed to the bottom of the fixed base, a fixed block is fixed to the bottom of the left side of the inner wall of the detection device housing, the bottom of the fixed block is rotatably connected to a worm, the output end of the motor is fixedly connected to the worm, the top of the inner wall of the detection device housing is rotatably connected to a first rotating shaft, the bottom of the inner wall of the detection device housing is rotatably connected to a second rotating shaft, the left and right ends of the first rotating shaft are coaxially fixedly connected to the two groups of connecting shafts on the upper side, the left and right ends of the second rotating shaft are coaxially fixedly connected to the two groups of connecting shafts on the lower side, the left outer wall of the second rotating shaft is coaxially fixedly connected to a worm gear, and the worm gear is meshed with the worm gear.
[0013] Preferably, a third rotating shaft is rotatably connected to the right outer wall of the signal amplifier, the coil is coaxially fixedly connected to the third rotating shaft, a second synchronous wheel is coaxially fixed to the right outer wall of the third rotating shaft, a third synchronous wheel is coaxially fixed to the right outer wall of the third rotating shaft near the second synchronous wheel, a fourth synchronous wheel is coaxially fixed to the right side of the first rotating shaft, a first synchronous wheel is coaxially fixed to the right side of the second rotating shaft, the fourth synchronous wheel and the third synchronous wheel are connected via a second synchronous belt, and the second synchronous wheel and the first synchronous wheel are connected via a first synchronous belt;
[0014] The signal amplifier is used to amplify the weak electrical signal generated by the coil. Its voltage gain is A v satisfy Among them, R f is the feedback resistor, R g is the input resistance, taking into account the coil internal resistance R L and the amplifier input impedance R in , the actual input voltage V in for: The amplified signal will drive the pointer to rotate. The deflection angle θ of the pointer is proportional to the input voltage, θ = k·V out =k·A v ·V in Where k is the sensitivity coefficient of the pointer mechanism (rad / V).
[0015] Preferably, a second rectangular through-groove is provided at the bottom of the signal amplifier, a signal processor is fixed to the inner wall of the second rectangular through-groove, and three groups of magnetic sensors are fixed to the bottom of the signal processor.
[0016] Preferably, the end of the connecting shaft away from the housing of the detection equipment is sleeved with a cylindrical fixing seat, the inner wall of the cylindrical fixing seat is fixed with a hexagonal base, each surface of the hexagonal base is fixed with a connecting rod, the surface of the cylindrical fixing seat is provided with a hole for the connecting rod to pass through, the hole is adapted to the connecting rod, and the end of the connecting rod away from the hexagonal base is fixed with a second negative pressure suction cup.
[0017] Preferably, a vacuum pump is fixed to the bottom left side of the inner wall of the mobile housing, a first connecting pipe is fixed to the output end of the vacuum pump, a second connecting pipe is fixed to the output end of the vacuum pump, the first connecting pipe is fixedly connected to the hexagonal prism base, a plurality of groups of first negative pressure suction cups are equidistantly fixed to the left outer wall of the detection device housing, the second connecting pipe is connected to the plurality of groups of first negative pressure suction cups, a handle is fixed to the top of the detection device housing, and a transparent panel is fixed to the front side of the detection device housing;
[0018] It should be noted that the adsorption force F of a single negative pressure suction cup i Produced by the internal and external pressure difference: F i =(P 大气 -P 真空 )·A i Among them, P 大气 =1.013×10 5 Pa is standard atmospheric pressure, P 真空 is the internal pressure of the suction cup, A i is the effective area of the suction cup ( r i is the radius of the suction cup).
[0019] The detection equipment shell adopts n1 first negative pressure suction cups and n2 second negative pressure suction cups, with a total adsorption force F 总 for: Assuming that all parameters of the suction cups are consistent and the vacuum degree is the same, then: F 总 =(n1A (1) +n2A (2) )(P 大气 -P 真空 ) To ensure stable adsorption of the equipment, F总 ≥k8(mg+F 动 ), where k8 is the safety factor, usually (2 to 3), F 动 It is the dynamic load when the equipment moves.
[0020] Preferably, two groups of first rectangular through-grooves are symmetrically provided on the front and rear outer walls of the movable shell, and the connecting shaft is slidably arranged on the inner wall of the first rectangular through-grooves. Two groups of rectangular sliding rod sleeves are symmetrically fixed on the left outer wall of the movable shell, and two groups of sliding rods are slidably provided on the inner walls of the two groups of rectangular sliding rod sleeves, and the top ends of the two groups of sliding rods are fixedly connected to the same handle.
[0021] Preferably, four groups of springs are symmetrically fixed to the bottom right side of the inner wall of the movable housing, and the top ends of the four groups of springs are fixedly connected to the same bottom plate.
[0022] Compared with the prior art, the present invention provides a building circuit detection device with a leakage locating function, which has the following beneficial effects:
[0023] 1. A building circuit detection device with a leakage locating function is provided with a mobile shell, a detection component, etc. Before use, the mobile shell is moved to a specified position by pulling a handle, and then the detection device shell is taken out by manually pulling the handle, and the vacuum pump is turned on to make the detection device shell adsorbed on the wall. The distribution of the building circuit magnetic field is detected by the magnetic sensor, so that the layout of the line is surveyed, and by starting the motor, the detection device shell is slowly moved along the wall of the building line. While moving, the coil cuts the magnetic field, so that the pointer rotates. When the pointer rotates stably, it means that there is no leakage in the building circuit. When the pointer rotates unstably, it means that there is leakage here. Through the above design, it is possible to quickly detect and locate the leakage position of the building.
[0024] 2. This building circuit detection device with a leakage locating function is provided with a movable housing and a movable assembly. When in use, a vacuum pump is provided to generate negative pressure on the surfaces of the first and second negative pressure suction cups, so that the detection device housing is firmly adsorbed on the wall or the ground. This design can quickly fix the detection device and improve detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;
[0026] Figure 2 This is a schematic diagram of the internal structure of the detection device housing of the present invention;
[0027] Figure 3 This is a schematic diagram of the structure of the detection component of the present invention;
[0028] Figure 4 This is a schematic diagram of the local structure of the detection component of the present invention;
[0029] Figure 5 This is a schematic diagram of the top structure of the detection device housing of the present invention;
[0030] Figure 6 This is a schematic diagram of the external structure of the mobile housing of the present invention;
[0031] Figure 7 It is a schematic diagram of the local structure of the mobile component of the present invention.
[0032] In the figure: 1. movable housing; 2. detection assembly; 3. movable assembly; 4. wheel hub; 5. first rectangular through-groove; 6. first connecting pipe; 7. second connecting pipe; 8. handle; 9. transparent panel; 10. spring; 11. detection device housing; 12. rectangular sliding rod sleeve; 13. sliding rod; 14. handle; 15. first negative pressure suction cup; 16. first rotating shaft; 17. second rotating shaft; 18. third rotating shaft; 19. first synchronous pulley; 20. second synchronous pulley; 21. first synchronous belt; 22 , third synchronous wheel; 23. Second synchronous belt; 24. Fourth synchronous wheel; 25. Pointer; 26. Panel; 27. Signal processor; 28. Bottom plate; 29. Coil; 30. Fixed rod; 31. Signal amplifier; 32. Fixed base; 33. Motor; 34. Worm gear; 35. Worm; 36. Magnetic sensor; 37. Second rectangular through-groove; 38. Vacuum pump; 39. Connecting shaft; 40. Columnar fixing seat; 41. Connecting rod; 42. Second negative pressure suction cup; 43. Hexagonal prism base. DETAILED DESCRIPTION
[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.
[0034] As introduced in the background technology, there are deficiencies in the existing technology. In order to solve the above technical problems, this application proposes a building circuit detection device with a leakage locating function.
[0035] In a typical embodiment of the present application, Figure 1-7As shown, a building circuit detection device with a leakage locating function includes a movable housing 1, four sets of hubs 4 symmetrically fixed to the four corners of the bottom of the movable housing 1, two sets of first rectangular through-grooves 5 symmetrically opened on the front and rear outer walls of the movable housing 1, a connecting shaft 39 slidably disposed on the inner wall of the first rectangular through-grooves 5, two sets of rectangular sliding rod sleeves 12 symmetrically fixed to the left outer wall of the movable housing 1, two sets of sliding rods 13 slidably disposed on the inner walls of the two sets of rectangular sliding rod sleeves 12, and the tops of the two sets of sliding rods 13 are fixedly connected to the same handle 14;
[0036] Before use, it should be mentioned that the detection component 2 is integrally engaged in the interior of the mobile housing 1, and is adapted to the connecting shaft 39 through the first rectangular through-groove 5 opened on the front and rear sides of the mobile housing 1. When in use, it is only necessary to pull the handle 8 to take out the entire detection device housing 11. When not needed, the detection device housing 11 can be placed as a whole inside the mobile housing 1 through the handle 8. This setting can effectively protect the detection device housing 11 and increase the service life of the equipment. Secondly, two groups of rectangular sliding rod sleeves 12 are provided on the left side of the mobile housing 1. By pulling the handle 14, the sliding rod 13 slides inside the rectangular sliding rod sleeve 12 and the distance can be adjusted freely. The main purpose of this design is to facilitate the transportation of the mobile housing 1 and reduce the use of manpower. It should be noted that four groups of wheel hubs 4 are provided at the bottom of the mobile housing 1. The wheel hubs 4 themselves are equipped with brakes. This design can fix the mobile housing 1 to prevent displacement during use and affect the detection of the building circuit.
[0037] As a preferred implementation in this embodiment, the moving component 3 includes four groups of connecting shafts 39 symmetrically connected to the front and rear sides of the detection device housing 11, a fixed base 32 is fixed to the bottom of the inner wall of the detection device housing 11, a motor 33 is fixed to the bottom of the fixed base 32, a fixed block is fixed to the bottom of the left side of the inner wall of the detection device housing 11, the bottom of the fixed block is rotatably connected to a worm 35, the output end of the motor 33 is fixedly connected to the worm 35, the top of the inner wall of the detection device housing 11 is rotatably connected to the first rotating shaft 16, the bottom of the inner wall of the detection device housing 11 is rotatably connected to the second rotating shaft 17, and the first rotating shaft 18 is rotatably connected to the bottom of the inner wall of the detection device housing 11. The left and right ends of the first rotating shaft 16 are coaxially fixedly connected to the two sets of connecting shafts 39 on the upper side, the left and right ends of the second rotating shaft 17 are coaxially fixedly connected to the two sets of connecting shafts 39 on the lower side, the left outer wall of the second rotating shaft 17 is coaxially fixedly connected to the worm gear 34, the worm 35 is engaged with the worm gear 34, the right outer wall of the signal amplifier 31 is rotatably connected to the third rotating shaft 18, the coil 29 is coaxially fixedly connected to the third rotating shaft 18, the right outer wall of the third rotating shaft 18 is coaxially fixed with the second synchronous wheel 20, the right outer wall of the third rotating shaft 18 is coaxially fixed with the third synchronous wheel 22, the first rotating shaft 16 A fourth synchronous wheel 24 is coaxially fixed to the right side, and a first synchronous wheel 19 is coaxially fixed to the right side of the second rotating shaft 17. The fourth synchronous wheel 24 is connected to the third synchronous wheel 22 through a second synchronous belt 23, and the second synchronous wheel 20 is connected to the first synchronous wheel 19 through a first synchronous belt 21. The end of the connecting shaft 39 away from the detection equipment housing 11 is sleeved with a cylindrical fixing seat 40, and a hexagonal base 43 is fixed to the inner wall of the cylindrical fixing seat 40. A connecting rod 41 is fixed to each surface of the hexagonal base 43. A hole for the connecting rod 41 to pass through is opened on the surface of the cylindrical fixing seat 40, and the hole is adapted to the connecting rod 41. A second negative pressure suction cup 42 is fixed to one end of the connecting rod 41 away from the hexagonal prism base 43. A vacuum pump 38 is fixed to the bottom left side of the inner wall of the mobile housing 1. A first connecting pipe 6 is fixed to the output end of the vacuum pump 38. A second connecting pipe 7 is fixed to the output end of the vacuum pump 38. The first connecting pipe 6 is fixedly connected to the hexagonal prism base 43. Several groups of first negative pressure suction cups 15 are equidistantly fixed to the left outer wall of the detection device housing 11. The second connecting pipe 7 is connected to the several groups of first negative pressure suction cups 15. A handle 8 is fixed to the top of the detection device housing 11, and a transparent panel 9 is fixed to the front side of the detection device housing 11.
[0038] Specifically, after reaching the location of the building circuit that needs to be inspected, the detection device housing 11 is removed by pulling the handle 8. After removal, the vacuum pump 38 is started. The operation of the vacuum pump 38 generates negative pressure on the surfaces of the first negative pressure suction cup 15 and the second negative pressure suction cup 42. This negative pressure can cause the detection device housing 11 to be adsorbed on the wall or the ground as a whole. This design can ensure that the detection device housing 11 can be fixed when the detection device housing 11 is being inspected, thereby improving the efficiency of the inspection.
[0039] Next, start the motor 33. The start of the motor 33 can make the worm 35 rotate, and at the same time, the worm 35 drives the worm wheel 34 to rotate. When the worm wheel 34 rotates, the second shaft 17 will rotate. Note that the two ends of the second shaft 17 are coaxially fixed with the two sets of connecting shafts 39 at the bottom. At the same time, through the cooperation of the first synchronous wheel 19, the second synchronous wheel 20 and the first synchronous belt 21, the detection component 2 cuts the magnetic field, thereby converting mechanical energy into electrical energy to determine whether the building circuit has leakage. Then, through the third synchronous wheel The cooperation of the step wheel 22, the second synchronous belt 23 and the fourth synchronous wheel 24 drives the first rotating shaft 16 at the top to rotate. It should be noted that the two ends of the first rotating shaft 16 are coaxially fixed with the two sets of connecting shafts 39 at the top. Therefore, when the motor 33 is started, the four sets of connecting shafts 39 will rotate synchronously. This design can make the detection device housing 11 move forward as a whole. It should be mentioned that while the detection device housing 11 moves, the first negative pressure suction cup 15 and the second negative pressure suction cup 42 can cooperate with each other to prevent the detection device housing 11 from falling from the wall.
[0040] Supplementary explanation: the adsorption force F of a single negative pressure suction cup i Produced by the internal and external pressure difference: F i =(P 大气 -P 真空 )·A i Among them, P 大气 =1.013×10 5 Pa is standard atmospheric pressure, P 真空 is the internal pressure of the suction cup, A i is the effective area of the suction cup ( r i is the radius of the suction cup).
[0041] The detection equipment shell adopts n1 first negative pressure suction cups 15 and n2 second negative pressure suction cups 42, with a total adsorption force F 总 for: Assuming that all parameters of the suction cups are consistent and the vacuum degree is the same, then: F 总 =(n1A (1) +n2A (2) )(P 大气 -P 真空 ) To ensure stable adsorption of the equipment, F 总 ≥k8(mg+F 动 ), where k8 is the safety factor, usually (2-3), F 动 Dynamic load when the equipment moves
[0042] Furthermore, in the above scheme, the detection component 2 is used to detect the magnetic field of the normal building circuit and the magnetic field of the abnormal building circuit. The detection component 2 includes a detection device housing 11 installed inside the mobile housing 1. Four groups of fixing rods 30 are symmetrically fixed on the left and right sides of the inner wall of the detection device housing 11. A signal amplifier 31 is fixed on the opposite side of the four groups of fixing rods 30. The inner wall of the signal amplifier 31 is rotatably connected to a coil 29. The coil 29 is used to cut the magnetic field of the building circuit and convert mechanical energy into electrical energy. A panel 26 is fixed on the front side of the signal amplifier 31. A pointer 25 is rotatably connected to the center of the panel 26. A second rectangular through-groove 37 is opened at the bottom of the signal amplifier 31. A signal processor 27 is fixed to the inner wall of the second rectangular through-groove 37. Three groups of magnetic sensors 36 are fixed to the bottom of the signal processor 27.
[0043] In this embodiment, when the detection device housing 11 moves forward, the coil 29 will rotate. When the coil 29 rotates, the magnetic field surrounding the building circuit will be cut. At this time, the coil 29 cuts the magnetic lines of force in the magnetic field, causing the magnetic flux passing through the coil 29 to change. According to Faraday's law of electromagnetic induction, this will generate an induced electromotive force and an induced current in the coil 29. In this process, the mechanical energy of the movement of the coil 29 is converted into electrical energy through electromagnetic induction, and this electrical energy is provided to the pointer 25. If there is no leakage in the building circuit, the magnetic field is stable and the rotation of the pointer 25 is also stable. When there is leakage in the building circuit, the magnetic field will change, and then the rotation of the pointer 25 will also change. At this time, the staff can judge whether the building circuit has leakage by observing the rotation of the pointer 25. It should be added that there are three groups of magnetic sensors 36 at the bottom of the detection device housing 11. When the detection device housing 11 moves, the magnetic sensor 36 will first detect the magnetic field of the surrounding lines, so as to determine the distribution of the lines. By transmitting this signal to the signal processor 27, after processing, the detection device housing 11 can be moved along the building circuit, thereby improving the efficiency of detection.
[0044] In addition, for a normally energized conductor, the magnetic field strength around it follows Ampere's circuit theorem, and the magnetic field strength at a distance r from the center of the conductor is: where μ0 = 4π × 10 -7 H / m is the magnetic permeability of vacuum, I is the current in the conductor;
[0045] For a leakage circuit, the leakage is equivalent to an additional current I 1 , resulting in local magnetic field superposition and the formation of abnormal magnetic field distribution: Among them B 漏散 It is the scattered magnetic field generated by leakage current in inhomogeneous media, which is related to the leakage path and the magnetic permeability of the building material;
[0046] The signal amplifier 31 is used to amplify the weak electrical signal generated by the coil 29. The voltage gain A v satisfy Among them, R f is the feedback resistor, R g is the input resistance, taking into account the internal resistance R of coil 29 L and the input impedance R of the signal amplifier 31 in , the actual input voltage V in for: The amplified signal will drive the pointer to rotate. The deflection angle θ of the pointer is proportional to the input voltage, θ = k·V out =k·A v ·V in Where k is the sensitivity coefficient of the pointer mechanism (rad / V);
[0047] Finally, it should be noted that regarding the magnetic field detection and signal processing algorithm, first, three groups of magnetic sensors 36 are orthogonally distributed to detect the three-dimensional magnetic field components (B X , B y , B z ), synthetic magnetic field strength The magnetic field distribution of a normal circuit satisfies the right-hand screw rule. When leakage occurs, both the direction and amplitude of the magnetic field vector will change suddenly. The abnormal signal can be extracted through differential operation: ΔB = |B(t)-B0|, where B0 is the initial reference magnetic field strength.
[0048] The filtering algorithm of the signal processor 27 uses a second-order Butterworth low-pass filter to remove high-frequency noise, and the transfer function is: The cutoff frequency ω is set based on the circuit power frequency (50 Hz) and the characteristic frequency of the leakage signal, and the damping ratio ζ = 0.707 achieves maximum flat response. The filtered signal is input to the microprocessor, and the leakage location is determined through a threshold comparison algorithm.
[0049] The magnetic field inversion algorithm for line layout is based on the magnetic dipole model. The leakage point can be equivalent to a magnetic dipole, and its magnetic field distribution is:
[0050] The working principle of the present invention is: after reaching the position of the building circuit that needs to be inspected, the detection device housing 11 is taken out by pulling the handle 8. After taking it out, the vacuum pump 38 is started. The operation of the vacuum pump 38 will generate negative pressure on the surface of the first negative pressure suction cup 15 and the second negative pressure suction cup 42. The negative pressure can make the detection device housing 11 as a whole adsorbed on the wall or the ground. This design can ensure that the detection device housing 11 can be fixed when the detection device housing 11 is being inspected, thereby improving the efficiency of the inspection. Then, the motor 33 is started. The start of the motor 33 can make the worm 35 rotate, and the worm 35 will drive the worm gear 34 to rotate. When the worm gear 34 rotates, the second rotating shaft 17 will rotate. Note that the two ends of the second rotating shaft 17 are coaxially fixed with the two sets of connecting shafts 39 at the bottom. At the same time, through the cooperation of the first synchronous wheel 19, the second synchronous wheel 20 and the first synchronous belt 21, the detection component 2 cuts the magnetic field, thereby converting mechanical energy into Converted into electrical energy, determine whether the building circuit has leakage, then, through the cooperation of the third synchronous wheel 22, the second synchronous belt 23 and the fourth synchronous wheel 24, drive the first rotating shaft 16 at the top to rotate. Note that the two ends of the first rotating shaft 16 are coaxially fixed with the two sets of connecting shafts 39 at the top. Therefore, when the motor 33 is started, the four sets of connecting shafts 39 will rotate synchronously. This design can make the detection device housing 11 move forward as a whole. It should be mentioned that when the detection device housing 11 moves, the first negative pressure suction cup 15 and the second negative pressure suction cup 42 can cooperate with each other to prevent the detection device housing 11 from falling from the wall. When the detection device housing 11 moves forward, the coil 29 will rotate. When the coil 29 rotates, it will cut the magnetic field surrounding the building circuit. At this time, the coil 29 cuts the magnetic lines of force in the magnetic field, causing the magnetic flux passing through the coil 29 to change. According to Faraday's law of electromagnetic induction, this will generate induced electromotive force and induced current in the coil 29. During this process, the mechanical energy of the movement of the coil 29 is converted into electrical energy through electromagnetic induction, and this electrical energy will be provided to the pointer 25. If there is no leakage in the building circuit, the magnetic field is stable and the rotation of the pointer 25 is also stable. When there is leakage in the building circuit, the magnetic field will change, and then the rotation of the pointer 25 will also change. At this time, the staff can judge whether the building circuit has leakage by observing the rotation of the pointer 25. It should be added that there are three groups of magnetic sensors 36 at the bottom of the detection device housing 11. When the detection device housing 11 moves, the magnetic sensor 36 will first detect the magnetic field of the surrounding lines to determine the distribution of the lines. By transmitting this signal to the signal processor 27 and processing it, the detection device housing 11 can be moved along the building circuit to improve the efficiency of detection.
[0051] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.
Claims
1. A building circuit detection device with a leakage locating function, characterized in that: include, A movable housing, wherein four sets of wheel hubs are symmetrically fixed at the four corners of the bottom of the movable housing; A detection component, the detection component is used to detect the magnetic field of normal building circuits and the magnetic field of abnormal building circuits. The detection component includes a detection device housing installed inside a mobile housing. Four sets of fixing rods are symmetrically fixed on the left and right sides of the inner wall of the detection device housing. Signal amplifiers are fixed to the facing sides of the four sets of fixing rods. The inner wall of the signal amplifier is rotatably connected to a coil. The coil is used to cut the magnetic field of the building circuit and convert mechanical energy into electrical energy. A panel is fixed to the front side of the signal amplifier, and a pointer is rotatably connected to the center of the panel. A moving component is used to drive the detection device housing to move.
2. A building circuit detection device with leakage locating function according to claim 1, characterized in that: The moving assembly includes four groups of connecting shafts symmetrically connected to the front and rear sides of the detection equipment housing, a fixed base is fixed to the bottom of the inner wall of the detection equipment housing, a motor is fixed to the bottom of the fixed base, a fixed block is fixed to the bottom of the left side of the inner wall of the detection equipment housing, the bottom of the fixed block is rotatably connected to a worm, the output end of the motor is fixedly connected to the worm, the top of the inner wall of the detection equipment housing is rotatably connected to a first rotating shaft, the bottom of the inner wall of the detection equipment housing is rotatably connected to a second rotating shaft, the left and right ends of the first rotating shaft are coaxially fixedly connected to the two groups of connecting shafts on the upper side, the left and right ends of the second rotating shaft are coaxially fixedly connected to the two groups of connecting shafts on the lower side, the left outer wall of the second rotating shaft is coaxially fixedly connected to a worm gear, and the worm gear is meshed with the worm gear.
3. The building circuit detection device with leakage locating function according to claim 2, characterized in that: The right outer wall of the signal amplifier is rotatably connected to a third rotating shaft, the coil is coaxially fixedly connected to the third rotating shaft, a second synchronous wheel is coaxially fixed to the right outer wall of the third rotating shaft, a third synchronous wheel is coaxially fixed to the right outer wall of the third rotating shaft near the second synchronous wheel, a fourth synchronous wheel is coaxially fixed to the right side of the first rotating shaft, a first synchronous wheel is coaxially fixed to the right side of the second rotating shaft, the fourth synchronous wheel and the third synchronous wheel are connected by a second synchronous belt, and the second synchronous wheel and the first synchronous wheel are connected by a first synchronous belt.
4. The building circuit detection device with leakage locating function according to claim 1, characterized in that: A second rectangular through-groove is provided at the bottom of the signal amplifier, a signal processor is fixed to the inner wall of the second rectangular through-groove, and three groups of magnetic sensors are fixed to the bottom of the signal processor.
5. The building circuit detection device with leakage locating function according to claim 2, characterized in that: The end of the connecting shaft away from the housing of the detection equipment is provided with a cylindrical fixing seat, the inner wall of the cylindrical fixing seat is fixed with a hexagonal base, each surface of the hexagonal base is fixed with a connecting rod, the surface of the cylindrical fixing seat is provided with a hole for the connecting rod to pass through, the hole is adapted to the connecting rod, and the end of the connecting rod away from the hexagonal base is fixed with a second negative pressure suction cup.
6. The building circuit detection device with leakage locating function according to claim 1, characterized in that: A vacuum pump is fixed to the bottom left side of the inner wall of the mobile shell, a first connecting pipe is fixed to the output end of the vacuum pump, a second connecting pipe is fixed to the output end of the vacuum pump, the first connecting pipe is fixedly connected to the hexagonal prism base, several groups of first negative pressure suction cups are equidistantly fixed to the left outer wall of the detection equipment shell, the second connecting pipe is connected to several groups of first negative pressure suction cups, a handle is fixed to the top of the detection equipment shell, and a transparent panel is fixed to the front side of the detection equipment shell.
7. The building circuit detection device with leakage locating function according to claim 1, characterized in that: Two groups of first rectangular through-grooves are symmetrically provided on the front and rear outer walls of the movable shell, and the connecting shaft is slidably arranged on the inner wall of the first rectangular through-grooves. Two groups of rectangular sliding rod sleeves are symmetrically fixed on the left outer wall of the movable shell, and two groups of sliding rods are slidably provided on the inner walls of the two groups of rectangular sliding rod sleeves, and the top ends of the two groups of sliding rods are fixedly connected to the same handle.
8. The building circuit detection device with leakage locating function according to claim 1, characterized in that: Four groups of springs are symmetrically fixed to the bottom right side of the inner wall of the movable housing, and the top ends of the four groups of springs are fixedly connected to the same bottom plate.