CN211206656U

CN211206656U - Non-contact cable monitoring device

Info

Publication number: CN211206656U
Application number: CN201921586840.5U
Authority: CN
Inventors: 申世安; 崔显亮; 王斌; 史桧
Original assignee: Shenzhen Huawuxinlian Technology Co Ltd
Current assignee: Shenzhen Huawuxinlian Technology Co Ltd
Priority date: 2019-09-23
Filing date: 2019-09-23
Publication date: 2020-08-07
Anticipated expiration: 2029-09-23

Abstract

The utility model provides a non-contact cable monitoring devices for the transmission state of a monitoring cable, monitoring devices's characterized in that, include: the monitoring module is used for being installed on the cable and comprises at least one magnetic sensor, and the magnetic sensor is fixed on the cable through a locking mechanism or gluing so as to acquire magnetic field information of the cable; and the processing module comprises a processor for receiving and processing the magnetic field information acquired by the monitoring module.

Description

Non-contact cable monitoring device

Technical Field

The utility model relates to a cable monitoring devices indicates a non-contact cable monitoring devices especially.

Background art:

when the electrical equipment is abnormally powered on, risks are often generated, and the power-on condition of the electrical equipment needs to be monitored. In the case of no external adapter, the current is alternating current before being input into the electrical equipment, and the alternating current in the power transmission line can be monitored by adopting a non-contact method under the condition of not disassembling the electrical equipment and not damaging the power transmission line. In some existing non-contact monitoring schemes, a single wire in an alternating current wire is monitored, however, in many cases, a plurality of wires of the alternating current wire are twisted and coated together and are difficult to separate, and meanwhile, because magnetic fields generated by the plurality of wires of the alternating current wire are mutually offset, non-contact monitoring is increasingly difficult.

The utility model provides a to above problem, provide a new non-contact cable monitoring devices, adopt new method and technological means in order to solve these problems.

SUMMERY OF THE UTILITY MODEL

To the problem that the background art faces, the utility model discloses the aim at of creation provides a non-contact cable monitoring devices.

In order to achieve the above object, the utility model adopts the following technical means:

Optionally, the monitoring module and the processing module communicate in a wired or wireless manner.

Optionally, the processing module is provided separately from the cable.

Optionally, the processing module includes a power supply unit for supplying power to the monitoring module.

Optionally, the monitoring module includes a housing, the locking mechanism is disposed on the housing or includes a portion of the housing, the magnetic sensor is disposed on the housing, the housing is made of a hard material, and the housing has a recess extending along a length direction of the cable, and the recess is configured to receive a portion of the cable.

Optionally, the housing is provided as a spring clip, thereby clamping the monitoring module to the cable.

Optionally, the magnetic sensor is disposed at a central portion of the housing in the longitudinal direction.

Optionally, the inner surface of the recess matches the surface shape and size of the cable to conform to the cable.

Optionally, the magnetic sensor has a plurality of magnetic sensors, and the plurality of magnetic sensors are arranged around the cable.

Optionally, a shield is included that covers the magnetic sensor so that the magnetic sensor can only sense magnetic fields from the direction of the cable.

Compared with the prior art, the utility model discloses following beneficial effect has:

the monitoring module is arranged on the cable, and the magnetic sensor is fixed on the cable through a locking mechanism or gluing so as to acquire the magnetic field information of the cable; the processing module receives and processes the magnetic field information collected by the monitoring module through the processor. Through split type setting monitoring module with processing module gathers magnetic field information and handles magnetic field information, in order to alleviate monitoring module's weight makes monitoring module can be stably fixed in on the cable, guarantee monitoring module detects stability and accuracy.

Drawings

Fig. 1 is a block diagram of the monitoring device of the present invention;

fig. 2 is a perspective view of a monitoring module according to a first embodiment of the present invention;

FIG. 3 is a front view of the monitoring module of FIG. 2;

FIG. 4 is a schematic view of the monitoring module of FIG. 3 prior to clamping the cable;

FIG. 5 is a schematic view of the monitoring module of FIG. 4 clamping a cable;

FIG. 6 is a perspective view of FIG. 5;

FIG. 7 is a cross-sectional view taken along A-A of FIG. 6;

fig. 8 is a front view of a monitoring module according to a second embodiment of the present invention;

FIG. 9 is a schematic view of the monitoring module of FIG. 8 clamping a cable;

fig. 10 is a front view of a monitoring module according to a third embodiment of the present invention;

FIG. 11 is a schematic view of the monitoring module of FIG. 10 clamping a cable.

Detailed description of the embodiments reference is made to the accompanying drawings in which:

monitoring device 100	Monitoring module 101	Housing 102	Recess 103	Inner surface 104
					Locking mechanism 105	Spring 106	Tie 107	Magnetic sensor 108	Cable 109
Shield 110	Processing module 111	Processor 112	Power supply unit 113

Detailed Description

For better understanding of the objects, structures, features, and functions of the present invention, reference should now be made to the drawings and detailed description of the invention.

The utility model discloses non-contact cable 109 monitoring devices 100 is used for detecting the transmission state (like leakage current) of cable 109, cable 109 is for can be single core line or multicore line to the multicore line of transmission alternating current is taken as an example, and common cable 109 includes single-phase two-wire and three-phase three-wire, and the electric current stack in each circuit of cable 109 is 0, leads to macroscopically, the magnetic field that cable 109 produced is 0, nevertheless in the microcosmic, because many cores of cable 109 are different apart from the distance of a certain point to little difference appears in the size of the magnetic field that this point department produced, can't just offset, but forms a little superimposed magnetic field, monitoring devices 100 detects this little superimposed magnetic field through following method. The single-phase two-wire cable 109 for transmitting sine and cosine ac power is taken as an example for detailed description.

As shown in fig. 1, the monitoring device 100 of the present invention mainly includes a monitoring module 101 and a processing module 111, the monitoring module 101 and the processing module 111 communicate with each other in a wired or wireless manner, and preferably communicate with each other in a wired manner, so that the processing module 111 can communicate with the monitoring module 101 via a data line and supply power to the monitoring module 101 while transmitting data.

The monitoring module 101 transmits the magnetic field information collected by the magnetic sensor 108 to the processing module 111 through a data line. The processing module 111 mainly comprises a processor 112 and a power supply unit 113. The processing module 111 is separated from the cable 109 to reduce the weight of the monitoring module 101, so that the monitoring module 101 can be stably fixed on the cable 109, and the stability and accuracy of the detection of the monitoring module 101 are ensured.

The processor 112 is configured to receive and process the magnetic field information collected by the monitoring module 101, and then display the magnetic field information or other data information (such as current information, voltage information, etc.) converted from the magnetic field information on a display screen or an instrument. In one embodiment, the processor 112 may also issue an alert signal when the magnetic field information exceeds a set threshold.

As shown in fig. 2, the monitoring module 101 mainly includes a housing 102, a locking mechanism 105 disposed on the housing 102, and a magnetic sensor 108.

The housing 102 is made of a hard material, preferably an insulating plastic, so that the housing 102 is not easily bent, the housing 102 is elongated and extends along the length direction of the cable 109, a recessed portion 103 extending along the length direction of the cable 109 is disposed on the housing 102, the recessed portion 103 penetrates through two ends of the housing 102 in the length direction, the recessed portion 103 is used for accommodating a portion of the cable 109, and the shape and the size of an inner surface 104 of the recessed portion 103 are matched with the shape and the size of the cable 109, so that the portion of the cable 109 accommodated in the recessed portion 103 is attached to the inner surface 104 of the recessed portion 103. The shape of the recess 103 may be artificially configured according to the shape of the cable 109, and since most of the cables 109 have a circular cross section, the cross section of the recess 103 is preferably circular arc.

One or more locking mechanisms 105 are disposed on the housing 102 to lock the housing 102 to the cable 109, so that the portion of the cable 109 received in the recessed portion 103 is fixed relative to the housing 102 (i.e., the portion of the cable 109 received in the recessed portion 103 does not slide, rotate, bend or otherwise deform relative to the housing 102), and the portion of the cable 109 received in the recessed portion 103 is defined as a fixed portion (not numbered, the same applies hereinafter). The locking mechanism 105 may be a spring clip, a cable tie 107, a buckle, or the like, and since the spring clip or the cable tie 107 can fix the cables 109 with different sizes (or wire diameters), the locking mechanism 105 is preferably the spring clip or the cable tie 107, as shown in fig. 2 to 7, for the spring clip, only the housing 102 needs to be set into a spring clip type, the spring 106 provides elastic force, the spring 106 cooperates with the housing 102 to form the spring clip, so as to clamp the monitoring module 101 on the cable 109, as shown in fig. 8 and 9, for the cable tie 107, one cable tie 107 may be respectively installed at two ends of the housing 102 in the length direction, and at the same time, only the housing 102 needs to be provided with an installation hole to install the cable tie 107 on the housing 102, and the monitoring module 101 is fastened on the cable 109 by tightening the cable tie 107. As shown in fig. 9 and 10, in other embodiments, the housing 102 of the clip type may be replaced by: the housing 102 is configured to be a large semicircle, and the housing 102 is clamped on the cable 109 by the elasticity of the housing 102 itself, and the clamping portion of the housing 102 forms the locking mechanism 105. In other embodiments (not shown, the same applies below), a plurality of locking mechanisms 105 may be provided to more firmly lock the housing 102 to the cable 109; in other embodiments, only one locking mechanism 105 with a longer dimension may be provided, and the length of the locking mechanism is substantially equal to the length of the housing 102, so as to lock the fixed portion of the cable 109 in the recess 103.

Referring to fig. 7 again, the plurality of magnetic sensors 108 are provided, the plurality of magnetic sensors 108 are disposed at a central portion of the housing 102 along the length direction, and the plurality of magnetic sensors 108 are disposed around the cable 109 and adjacent to the cable 109, so as to collect magnetic field information of the cable 109 from multiple angles in a short distance. The magnetic sensor 108 may be disposed on the inner surface 104 of the recess 103 to be proximate to the cable 109; in other embodiments, the magnetic sensor 108 may be disposed within the housing 102. The plurality of magnetic sensors 108 may be respectively mounted on the housing 102 or injection molded with the housing 102; in one embodiment, the magnetic sensors 108 may be integrated on a circuit board, and the circuit board is mounted or injection molded on the housing 102. The magnetic sensor 108 is preferably a small-sized and high-precision magnetic sensor 108, such as a tmr sensor, the length of the fixed part of the cable 109 is much larger than the size of the magnetic sensor 108, where "much larger" means: the length of the fixed portion is sufficient to ensure that when the unfixed portion of the cable 109 shakes, twists or bends, the central portion of the fixed portion does not deform relative to the housing 102 (or the magnetic sensor 108), so that the magnetic field at the fixed portion does not jump with the deformation of the unfixed portion of the cable 109, and can be kept stable, thereby facilitating the magnetic sensor 108 to measure the magnetic field of the fixed portion stably and accurately, and avoiding interference from the deformation of the unfixed portion of the cable 109. The length of the fixing portion is preferably 5 to 10 times the length of the magnetic sensor 108. The magnetic sensors 108 can work cooperatively and verify each other, and even the magnetic sensors 108 can be set to sample synchronously, so as to reduce errors and avoid misjudgment. In other embodiments, only one of the magnetic sensors 108 may be provided.

In this embodiment, one or more shielding members 110 may be further disposed on the housing 102, and the cover is disposed on the magnetic sensor 108, so that the magnetic sensor 108 can only sense the magnetic field from the direction of the cable 109, so as to avoid the interference of the external magnetic field to the magnetic sensor 108. One of the shields 110 may be housed over the entire housing 102 or molded into the housing 102; one or more of the shielding members 110 correspond to a plurality of the magnetic sensors 108 one by one, that is, one shielding member 110 covers one magnetic sensor 108. In other embodiments (not shown, the same applies below), the shielding element 110 may be a shielding plating on the outer surface of the housing 102.

In this embodiment, the magnetic sensor 108 is fixed on the cable 109 through the locking mechanism 105 disposed on the housing 102; in other embodiments (not shown, the same applies below), the magnetic sensor 108 may be directly glued to the cable 109, and thus, the housing 102 may not be provided, which further reduces the volume of the monitoring module 101 and the weight of the monitoring module 101; the fixation of the magnetic sensor 108 by gluing is particularly suitable for the situation where the cable 109 is hard and not easily bent.

The utility model discloses a non-contact cable monitoring devices has following beneficial effect:

the monitoring module 101 is installed on the cable 109, and the magnetic sensor 108 is fixed on the cable 109 through a locking mechanism 105 or by gluing so as to collect the magnetic field information of the cable 109; the processing module 111 receives and processes the magnetic field information collected by the monitoring module 101 through the processor 112. Through split type setting monitoring module 101 with processing module 111 gathers magnetic field information and handles magnetic field information, in order to alleviate monitoring module 101's weight makes monitoring module 101 can be stably fixed in on the cable 109, guarantee monitoring module 101 detects stability and accuracy.

The above detailed description is only for the purpose of illustrating the preferred embodiments of the present invention, and not for the purpose of limiting the scope of the present invention, therefore, all the equivalent technical changes using the description and drawings of the present invention are included in the scope of the present invention.

Claims

1. A contactless cable monitoring device for monitoring a transmission status of a cable, the monitoring device comprising:

the monitoring module is used for being installed on the cable and comprises at least one magnetic sensor, and the magnetic sensor is fixed on the cable through a locking mechanism or gluing so as to acquire magnetic field information of the cable;

and the processing module comprises a processor for receiving and processing the magnetic field information acquired by the monitoring module.

2. The contactless cable monitoring device of claim 1, wherein: the monitoring module and the processing module are communicated in a wired or wireless mode.

3. The contactless cable monitoring device of claim 1, wherein: the processing module is disposed separately from the cable.

4. The contactless cable monitoring device of claim 1, wherein: the processing module comprises a power supply unit used for supplying power to the monitoring module.

5. The contactless cable monitoring device of claim 1, wherein: the monitoring module comprises a shell, the locking mechanism is arranged on the shell or comprises a part of the shell, the magnetic sensor is arranged on the shell, the shell is made of hard materials, the shell is provided with a concave part extending along the length direction of the cable, and the concave part is used for accommodating a part of the cable.

6. The contactless cable monitoring device of claim 5, wherein: the shell is arranged in a spring clamp mode, so that the monitoring module is clamped on the cable.

7. The contactless cable monitoring device of claim 5, wherein: the magnetic sensor is provided at a central portion of the housing in the longitudinal direction.

8. The contactless cable monitoring device of claim 5, wherein: the inner surface of the concave part is matched with the surface shape and the size of the cable so as to be attached to the cable.

9. The contactless cable monitoring device of claim 1, wherein: the magnetic sensor has a plurality of which are arranged around the cable.

10. The contactless cable monitoring device of claim 1, wherein: the magnetic sensor comprises a shielding piece which is covered on the magnetic sensor, so that the magnetic sensor can only sense the magnetic field from the direction of the cable.