Inductive micro self-powered wireless current sensing device

Abstract

The invention relates to the technical field of current sensing, in particular to induction type micro self-powered wireless current sensing equipment which comprises an external measurement shell, a Hall effect sensor arranged in the external measurement shell and an arc-shaped assembly seat installed on the inner wall of the external measurement shell. Close-to-close adjustment operation can be carried out according to cables of different specifications, so that the measurement distance is reduced, and the measurement precision is improved. An electric control type sliding adjusting frame used for installing a Hall effect sensor is assembled on the outer side of the overturning guide frame in a sliding mode, the measuring position of the sensor is changed in an electric control sliding adjusting mode, and therefore the sensor is controlled to be adjusted along the periphery of the cable, and the measuring range is widened. The electric control type sliding adjusting frame is driven by the lateral driving wheel to slide in the internal guide groove, unfolding and folding can be controlled by changing the position, and self power supply can be facilitated.

Description

Technical Field

[0001] This invention relates to the field of current sensing technology, and in particular to an inductive miniature self-powered wireless current sensing device. Background Technology

[0002] Non-invasive measurement of conductor current refers to methods that measure the current in a conductor without cutting the conductor, connecting it to a circuit, or affecting the existing current flow. These methods mainly utilize the magnetic or electric field effects generated by the current, or the changes in physical quantities caused by the current.

[0003] Non-invasive measurement essentially involves indirectly calculating the current itself by measuring the magnetic field generated by the current.

[0004] Current non-invasive measurement methods mainly fall into two categories: Hall effect sensors, which utilize the Hall effect. When a current-carrying conductor is placed in a magnetic field perpendicular to the current direction, a voltage proportional to the product of the current and the magnetic field strength is generated across the conductor. The Rogowski coil / current transformer operates on the principle of Faraday's law of electromagnetic induction. A hollow coil, uniformly wound on a non-magnetic, flexible frame, is placed around a current-carrying conductor. The changing magnetic field generated by the conductor's current induces an electromotive force (EMF) in the coil. The induced voltage is proportional to the rate of change of current. An integrator is needed to integrate the induced voltage and restore it to a signal proportional to the original current wave. Magnetoresistive sensors work on the principle that the resistance of certain materials changes with the applied magnetic field. There are three main types: anisotropic magnetoresistive, giant magnetoresistive, and tunneling magnetoresistive. Fiber optic current sensors operate primarily on the Faraday magneto-optical effect. When linearly polarized light propagates in a transparent medium within a magnetic field, its polarization plane rotates. The rotation angle is proportional to the integral of the magnetic field along the optical path, and according to Ampere's circuital law, this is directly proportional to the current in the conductor surrounding the optical path. Fluxgate sensors operate on the principle of utilizing the characteristic of a high-permeability magnetic core operating in the saturation region. A drive coil uses a high-frequency alternating current to periodically saturate the magnetic core in two directions. The DC or low-frequency AC magnetic field to be measured disrupts the symmetry of the positive and negative half-cycles of the core's saturation, inducing even-order harmonic voltages in the detection coil. The amplitude and phase of these harmonic voltages are proportional to the strength of the magnetic field being measured.

[0005] The Hall effect sensor is installed directly inside the detection housing, and the current is measured by adjusting the position of the detection housing. However, it cannot be adjusted to a suitable position for different specifications and multi-conductor cables, resulting in limited measurement accuracy and a relatively limited range of applications. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention is proposed.

[0007] To address the technical problem that current current sensing devices on the market cannot adapt to cables of different specifications and multi-conductor types, resulting in limited measurement accuracy and a relatively limited range of applications, this invention provides the following technical solution: an inductive micro-sized self-powered wireless current sensing device, comprising an external measuring housing, a Hall effect sensor disposed within the external measuring housing, and an arc-shaped mounting base mounted on the inner wall of the external measuring housing. The arc-shaped mounting base has an electrically controlled flip frame movably mounted on its inner arc surface for adjusting the distance between the Hall effect sensor and the cable. A flip guide frame is movably mounted on the outer flip end of the electrically controlled flip frame. An electrically controlled sliding adjustment frame for mounting the Hall effect sensor and whose measurement position can be adjusted along the outer periphery of the cable is slidably mounted on the outer side of the flip guide frame.

[0008] As a preferred embodiment of the inductive micro-miniature self-powered wireless current sensing device of the present invention, wherein: the arc-shaped mounting base is provided with inwardly bent lateral mounting frames on both sides, and the lateral mounting frames are used to be movably connected with the electrically controlled flip frame.

[0009] As a preferred embodiment of the inductive micro-sized self-powered wireless current sensing device of the present invention, the electrically controlled flip frame includes an outer flip frame that is movably assembled with the end and the side assembly frame, and an internal control support rod for controlling and adjusting the flip angle of the outer flip frame.

[0010] As a preferred embodiment of the inductive micro-sized self-powered wireless current sensing device of the present invention, wherein: an arc-shaped transition opening is provided inside the outer flip frame, and the internal linkage support shaft is movably installed in the arc-shaped transition opening and is adapted and linked with the arc-shaped transition opening.

[0011] As a preferred embodiment of the inductive micro-sized self-powered wireless current sensing device of the present invention, wherein: telescopic rods are provided on both sides of the internal control support rod, and the telescopic rods on both sides are respectively connected to the arc-shaped mounting base and the flip guide frame, for synchronously driving the outer flip frame and the flip guide frame to flip.

[0012] As a preferred embodiment of the inductive micro-sized self-powered wireless current sensing device of the present invention, one end of the flip guide frame is movably mounted on one side of the outer flip frame via a shaft, and can flip synchronously with the outer flip frame.

[0013] As a preferred embodiment of the inductive micro-sized self-powered wireless current sensing device of the present invention, the outer side of the flip guide frame is provided with an internal guide groove for guiding assembly, and an end guide groove that cooperates with the internal guide groove.

[0014] As a preferred embodiment of the inductive micro-miniature self-powered wireless current sensing device of the present invention, the electrically controlled sliding adjustment frame includes an inner guide seat slidably installed in an inner guide groove, an outer guide seat slidably installed in an end guide groove, a lateral assembly frame for mounting a Hall effect sensor, a lateral drive wheel installed inside the inner guide seat, and a wireless signal transmission module installed inside the outer guide seat.

[0015] As a preferred embodiment of the inductive micro-miniature self-powered wireless current sensing device of the present invention, wherein: the two ends of the lateral assembly frame are fixedly installed on the outer side of the inner guide seat and the outer guide seat, and the inner and outer guide seats are fixed with side guide blocks on both sides, and the inner walls of the inner guide groove and the end guide groove are provided with side guide grooves that cooperate with the side guide blocks.

[0016] As a preferred embodiment of the inductive micro-miniature self-powered wireless current sensing device of the present invention, wherein: an inner power supply terminal is installed on the inner sidewall of the internal guide groove and the end guide groove, and an outer power transmission terminal that cooperates with the inner power supply terminal is fixed on the sidewall of the side-mounted guide block, so as to realize the device self-powering.

[0017] The beneficial effects of this invention are as follows: The invention employs an electrically adjustable structure design, allowing for close-proximity adjustment of cables of different specifications, thus reducing the measurement distance and increasing measurement accuracy. An electrically controlled sliding adjustment frame for mounting a Hall effect sensor is slidably mounted on the outside of the flip guide frame. This electrically controlled sliding adjustment changes the sensor's measurement position, controlling its adjustment along the cable's circumference and improving the measurement range. The electrically controlled sliding adjustment frame is driven by lateral drive wheels to slide within the internal guide groove. Changing its position not only controls the extension and retraction but also facilitates self-powering. By installing lateral drive wheels inside the inner guide seat and a wireless signal transmission module inside the outer guide seat, the internal space is highly utilized. Furthermore, the module is connected to both ends of the lateral mounting frame for mounting the Hall effect sensor, making the structure more balanced and stable. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a schematic diagram of the structure of the present invention.

[0019] Figure 2 This is a schematic diagram of the inner structure of the present invention.

[0020] Figure 3 This is a schematic diagram of the internal structure of the electrically controlled flip frame and the electrically controlled sliding adjustment frame in this invention. Detailed Implementation

[0021] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0022] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0023] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0024] Figure 1 , Figure 2 and Figure 3 The device shown is an inductive miniature self-powered wireless current sensing device for multi-conductor current measurement, including an external measuring housing 1, a Hall effect sensor 2, and an arc-shaped mounting base 3 mounted on the inner wall of the external measuring housing 1. An electrically controlled flip frame 4 is movably mounted on the inner arc surface of the arc-shaped mounting base 3. A flip guide frame 5 is movably mounted on the outer flip end of the electrically controlled flip frame 4. An electrically controlled sliding adjustment frame 6 for mounting the Hall effect sensor 2 is slidably mounted on the outer side of the flip guide frame 5.

[0025] Working principle: The external measuring housing 1 consists of two arc-shaped covers, upper and lower, which are fixedly assembled by bolts on both sides and fitted onto the outside of the cable to be tested. Then, the guide wheel, which is elastically assembled between the electrically controlled flip frame 4 and the electrically controlled sliding adjustment frame 6, contacts and guides the surface of the cable to be tested, and transports it along the cable. Current measurement is performed during the transport process. The guide wheel can be a passive guide wheel or a main drive wheel, which moves and transports the cable to be tested as needed.

[0026] To facilitate lateral movement assembly, the arc-shaped assembly base 3 has inwardly bent lateral assembly frames 31 on both sides. To facilitate electrically controlled tilting adjustment, the electrically controlled tilting frame 4 includes an outer tilting frame 41 whose end is movably assembled with the lateral assembly frames 31, and an internal control support rod 42. To facilitate internal movement assembly, the outer tilting frame 41 has an arc-shaped transition opening 43 inside, and the internal control support rod 42 is axially movably installed inside the arc-shaped transition opening 43. The internal control support rod 42 extends to synchronously control the angles of the outer tilting frame 41 and the tilting guide frame 5.

[0027] To facilitate external assembly, one end of the flip guide frame 5 is movably mounted on one side of the outer flip frame 41. To facilitate internal guidance and adjustment, an internal guide groove 51 and an end guide groove 52 are provided on the outer surface of the flip guide frame 5.

[0028] To facilitate electronic adjustment, the electronically controlled sliding adjustment frame 6 includes an inner guide seat 61 slidably installed in the inner guide groove 51, an outer guide seat 62 slidably installed in the end guide groove 52, a lateral assembly frame 63 for mounting the Hall effect sensor 2, a lateral drive wheel 64 installed inside the inner guide seat 61, and a wireless signal transmission module 65 installed inside the outer guide seat 62.

[0029] The external measuring housing 1 is fitted onto the outside of the cable under test and then moved along the cable. While moving, the Hall effect sensor 2 measures multiple conductors inside the cable. During measurement, when the Hall effect sensor 2 detects an unstable current, the electrically controlled flipping frame 4 drives the flipping guide frame 5 to approach the outside of the cable under test. Then, the electrically controlled sliding adjustment frame 6 slides to reach a position where the current under test is stable, thereby ensuring the accuracy and stability of the measurement.

[0030] To facilitate inner guidance and positioning, the two ends of the lateral assembly frame 63 are fixedly installed on the outer sides of the inner guide seat 61 and the outer guide seat 62. Side guide blocks 66 are fixed on both sides of the inner guide seat 61 and the outer guide seat 62. Side guide grooves 53 that cooperate with the side guide blocks 66 are opened on the inner walls of the inner guide groove 51 and the end guide groove 52.

[0031] The side guide block 66 is inserted into the side guide groove 53 to prevent the inner guide seat 61 from detaching from the inner guide groove 51.

[0032] In order to enable self-powered operation in the stowed state, an inner power supply terminal 7 is installed on the inner sidewall of the inner guide groove 51 and the end guide groove 52, and an outer power transmission terminal 8 that cooperates with the inner power supply terminal 7 is fixed on the sidewall of the side-mounted guide block 66.

[0033] When the lateral drive wheel 64 rotates and drives the inner guide seat 61 to translate along the inner guide groove 51, the inner guide seat 61 drives the outer guide seat 62 to slide into the end guide groove 52 through the lateral assembly frame 63. At this time, the outer power supply terminal 8 is pressed and attached to the inner power supply terminal 7, and power is supplied to the outer power supply terminal 8 through the inner power supply terminal 7, thereby powering the battery located on the lateral assembly frame 63. Then, the battery powers the Hall effect sensor 2, the lateral drive wheel 64 and the wireless signal transmission module 65, achieving the purpose of self-powering.

[0034] To coordinate with the synchronous flipping adjustment and ensure the measurement stability of the flipping guide frame 5 after flipping, telescopic rods are provided on both sides of the internal control support rod 42. The telescopic rods on both sides of the internal control support rod 42 are respectively connected to the arc-shaped mounting base 3 and the flipping guide frame 5.

[0035] The internal control strut 42 controls the extension of the telescopic rods on both sides to compress the arc-shaped mounting base 3 and the flip guide frame 5. During bidirectional compression, it controls the outer flip frame 41 and the flip guide frame 5 to flip synchronously.

[0036] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. An inductive miniature self-powered wireless current sensing device, characterized in that: include, An external measuring housing (1), a Hall effect sensor (2) disposed within the external measuring housing (1), and an arc-shaped mounting base (3) mounted on the inner wall of the external measuring housing (1), wherein, The arc-shaped mounting base (3) is movably fitted with an electrically controlled flip frame (4) for adjusting the distance between the Hall effect sensor (2) and the cable. The flip end of the electrically controlled flip frame (4) is movably fitted with a flip guide frame (5). The flip guide frame (5) is slidably fitted with an electrically controlled sliding adjustment frame (6) for installing the Hall effect sensor (2) and adjusting the measurement position along the outer periphery of the cable.

2. The inductive miniature self-powered wireless current sensing device as described in claim 1, characterized in that: The arc-shaped mounting base (3) has inwardly bent side mounting frames (31) on both sides, which are used to be movably connected to the electrically controlled flip frame (4).

3. The inductive miniature self-powered wireless current sensing device as described in claim 2, characterized in that: The electrically controlled flip frame (4) includes an outer flip frame (41) that is movably assembled at the end with the side assembly frame (31), and an internal control support rod (42) for controlling and adjusting the flip angle of the outer flip frame (41).

4. The inductive miniature self-powered wireless current sensing device as described in claim 3, characterized in that: The outer flip frame (41) has an arc-shaped transition port (43) inside, and the internal control support rod (42) is movably installed in the arc-shaped transition port (43) and is adapted and linked with the arc-shaped transition port (43).

5. The inductive miniature self-powered wireless current sensing device as described in claim 4, characterized in that: The internal control support rod (42) is provided with telescopic rods on both sides. The telescopic rods on both sides are connected to the arc-shaped mounting base (3) and the flip guide frame (5) respectively, and are used to synchronously drive the outer flip frame (41) and the flip guide frame (5) to flip.

6. The inductive miniature self-powered wireless current sensing device as described in claim 5, characterized in that: One end of the flipping guide frame (5) is movably mounted on one side of the outer flipping frame (41) via a shaft, and can flip synchronously with the outer flipping frame (41).

7. The inductive miniature self-powered wireless current sensing device as described in claim 6, characterized in that: The outer side of the flip guide frame (5) is provided with an internal guide groove (51) for guiding assembly, and an end guide groove (52) that cooperates with the internal guide groove (51).

8. The inductive miniature self-powered wireless current sensing device as described in claim 7, characterized in that: The electrically controlled sliding adjustment frame (6) includes an inner guide seat (61) slidably installed in the inner guide groove (51), an outer guide seat (62) slidably installed in the end guide groove (52), a lateral assembly frame (63) for mounting the Hall effect sensor (2), a lateral drive wheel (64) installed inside the inner guide seat (61), and a wireless signal transmission module (65) installed inside the outer guide seat (62).

9. The inductive miniature self-powered wireless current sensing device as described in claim 8, characterized in that: The two ends of the lateral assembly frame (63) are fixedly installed on the outside of the inner guide seat (61) and the outer guide seat (62). The inner guide seat (61) and the outer guide seat (62) are fixed with side guide blocks (66) on both sides. The inner walls of the inner guide groove (51) and the end guide groove (52) are provided with side guide grooves (53) that cooperate with the side guide blocks (66).

10. The inductive miniature self-powered wireless current sensing device as described in claim 9, characterized in that: The inner guide groove (51) and the end guide groove (52) are equipped with inner power supply terminals (7) on their inner sidewalls, and the side guide block (66) is fixed with an outer power transmission terminal (8) that cooperates with the inner power supply terminal (7) to realize the self-power supply of the equipment.

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