CN219328757U

CN219328757U - Double-ring detector based on Hall effect

Info

Publication number: CN219328757U
Application number: CN202321145492.4U
Authority: CN
Inventors: 刘威; 王爱红; 詹跃明; 张翔溢; 肖渝; 杨怡
Original assignee: Chongqing Energy College
Current assignee: Chongqing Energy College
Priority date: 2023-05-12
Filing date: 2023-05-12
Publication date: 2023-07-11
Anticipated expiration: 2033-05-12

Abstract

The utility model relates to the technical field of detectors, and discloses a double-ring detector based on a Hall effect, which comprises a base, wherein the top of the base is connected with a positioning ring, both ends of the inner wall of the positioning ring are connected with detection rings, the inner wall of each detection ring is connected with a plurality of Hall elements, the Hall elements are distributed at equal intervals, the inside of the base is connected with an operational amplifier, and both ends of the positioning ring are connected with a group of positioning components. This kind of double annular detector based on hall effect is provided with two detection rings, and the common mode that hall element on two detection rings can realize interfering signal suppresses to improve the signal to noise ratio of detected signal, thereby let the detector can be more accurate when detecting, be difficult for letting the condition of staff's emergence erroneous judgement.

Description

Double-ring detector based on Hall effect

Technical Field

The utility model relates to the technical field of detectors, in particular to a double-ring detector based on a Hall effect.

Background

The nondestructive testing of the steel wire rope comprises two aspects, namely local damage detection and section defect measurement. For the two injuries, the traditional magnetic detection method comprises a leakage magnetic flux method, a main magnetic flux method and a loop magnetic flux method, the corresponding detection elements comprise induction coils, hall elements, fluxgates and the like, and the current sensor probe has a trend of developing to a hybrid probe consisting of a plurality of magnetic induction elements.

The detection element commonly used at present is an annular detector, the annular detector comprises a plurality of Hall elements, an operational amplifier and the like, when the annular detector is used, the normal component of a leakage magnetic field on the surface of the steel wire rope can be sensed through the Hall elements, corresponding voltage signals are output, the operational amplifier can process the voltage signals and transmit data to an external monitoring device, and therefore workers in the background can conveniently judge the damage of the steel wire rope through the data.

Because a plurality of interference signals exist during detection, the superposition of the output signals of the sensors on a single detection ring can not completely eliminate the influence of the femoral wave signals, which can lead the data generated during the detection of a single annular detector to be easily influenced, and further lead staff to generate misjudgment, so that the annular detector has certain defects.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a double-ring detector based on a Hall effect, so as to solve the problems of the background technology and enable the detector to be more accurate in detection.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a double-ring shape detector based on hall effect, includes the base, and the top of base is connected with the holding ring, and the both ends of holding ring inner wall all are connected with and detect the ring, and the inner wall that detects the ring is connected with a plurality of equidistance and distributes hall element, and the internal connection of base has the operational amplifier who links with the hall element electricity.

Further, the distance between the detection rings is 35mm.

Further, both ends of the positioning ring are connected with a group of positioning components, each positioning component comprises a connecting plate, positioning plates, positioning wheels and a rotating shaft, the side wall of the positioning ring is connected with the connecting plate, one surface of the connecting plate, which is close to the center position of the positioning ring, is connected with two positioning plates, the rotating shaft is connected between the positioning plates, and the positioning wheels are sleeved outside the rotating shaft.

Further, the lower extreme of locating plate is equipped with the spout, and the top of spout is connected with the reference column, and the bottom of reference column runs through the pivot and is connected with the bottom of spout, and the outside cover of reference column upper end is equipped with the elastic component, and the top of elastic component is connected with the top of spout, and the bottom of elastic component is connected with the pivot.

Further, an arc-shaped groove is formed in the outer wall of the positioning wheel.

Further, the operational amplifier is provided for an OP07 chip.

Further, the output end of the Hall element is electrically connected with the signal input end of the operational amplifier, and the signal output end of the operational amplifier is electrically connected with the signal input end of the external monitoring end through the data line.

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

this kind of double annular detector based on hall effect is provided with two detection rings, and the common mode that hall element on two detection rings can realize interfering signal suppresses to improve the signal to noise ratio of detected signal, thereby let the detector can be more accurate when detecting, be difficult for letting the condition of staff's emergence erroneous judgement.

Drawings

FIG. 1 is a schematic view of the overall structure of the present utility model;

FIG. 2 is a cross-sectional view of the entire present utility model;

FIG. 3 is a schematic view of the connection structure of the connection plate, the positioning plate and the positioning wheel of the present utility model;

FIG. 4 is a schematic view of the connection structure of the connecting plate and the positioning plate of the present utility model;

FIG. 5 is a schematic view of the positioning wheel of the present utility model;

fig. 6 is a schematic block diagram of the system of the present utility model.

In the figure: 1. a base; 2. a positioning ring; 3. detecting a circular ring; 4. a Hall element; 5. an operational amplifier; 6. a connecting plate; 7. a positioning plate; 8. a positioning wheel; 9. a rotating shaft; 10. positioning columns; 11. an elastic member.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-6, a dual ring detector based on hall effect includes a base 1, a positioning ring 2 is connected to the top of the base 1, two ends of the inner wall of the positioning ring 2 are both connected with a detection ring 3, a plurality of equally distributed hall elements 4 are connected to the inner wall of the detection ring 3, and an operational amplifier 5 connected to the hall elements 4 is connected to the inner side of the base 1.

The double-ring detector based on the Hall effect is provided with the two detection rings 3, and the Hall elements 4 on the two detection rings 3 can realize common mode inhibition on interference signals so as to improve the signal to noise ratio of detection signals, so that the detector can be more accurate in detection, and is not easy for workers to misjudge.

As shown in fig. 1 and 2, the pitch between the detection rings 3 is 35mm. Because the interval setting of the detection rings 3 at two ends of the positioning ring 2 is to ensure that the whole detector needs to be in a region with even magnetization of the steel wire rope, and new electromagnetic interference is avoided between the two detection rings 3, the interval between the two detection rings 3 is set to be 35mm.

As shown in fig. 1, 2 and 3, both ends of the positioning ring 2 are connected with a group of positioning components, each positioning component comprises a connecting plate 6, positioning plates 7, positioning wheels 8 and a rotating shaft 9, the side wall of the positioning ring 2 is connected with the connecting plate 6, one surface of the connecting plate 6, which is close to the central position of the positioning ring 2, is connected with two positioning plates 7, the rotating shafts 9 are connected between the positioning plates 7, and the positioning wheels 8 are sleeved outside the rotating shafts 9. Meanwhile, the steel wire rope is limited and positioned through the positioning assembly, so that the position of the steel wire rope is prevented from being changed, the magnetic leakage signal is prevented from being changed, and the position of the steel wire rope is prevented from affecting the detection result.

Specifically, when wire rope passes through this detector, wire rope can be cliied by the locating component at locating ring 2 both ends, when wire rope motion, locating wheel 8 can rotate with the step to avoid wire rope to take place to damage because of the friction, and the quantity of every group locating component is 3, and locating component equidistance distributes, so when 8 wire ropes of locating wheel on locating component are cliied, wire rope can receive the power of three direction simultaneously, and locating component's structure is the same, so can make wire rope be in the axis of locating ring 2 all the time, conveniently detect hall element 4 on ring 3 and detect wire rope.

As shown in fig. 3, 4 and 5, the lower end of the positioning plate 7 is provided with a chute, the top of the chute is connected with a positioning column 10, the bottom end of the positioning column 10 penetrates through the rotating shaft 9 and is connected with the bottom of the chute, the outer part of the upper end of the positioning column 10 is sleeved with an elastic piece 11, the top of the elastic piece 11 is connected with the top of the chute, and the bottom of the elastic piece 11 is connected with the rotating shaft 9.

Specifically, the elastic piece 11 extrudes the rotating shaft 9, and the elastic piece 11 always extrudes the rotating shaft 9, so that the steel wire rope is prevented from being located on the central axis of the positioning ring 2. And if the diameters of the steel wire ropes are different, the elastic piece 11 can be extruded and contracted, so that the steel wire ropes with different diameters can be conveniently positioned and limited.

As shown in fig. 5, the outer wall of the positioning wheel 8 is provided with an arc-shaped groove. The arc-shaped groove enables the contact area of the positioning wheel 8 to be larger when the steel wire rope is clamped, the positioning wheel 8 can be attached to the outer wall of the steel wire rope more, and the positioning wheel 8 is enabled to be more stable when the steel wire rope is clamped.

As shown in fig. 2, the operational amplifier 5 is provided for an OP07 chip. The OP07 chip is a bipolar (dual power supply) operational amplifier integrated circuit with low noise and non-chopping and zero stabilization, and the OP07 chip is more suitable for processing voltage signals output by the hall element 4 because the OP07 has the characteristics of low input bias current and high open loop gain.

As shown in fig. 6, the output end of the hall element 4 is electrically connected to the signal input end of the operational amplifier 5, and the signal output end of the operational amplifier 5 is electrically connected to the signal input end of the external monitor end through a data line.

Specifically, the area to be detected of the steel wire rope can be magnetized to saturation along the axial direction by using the permanent magnet, the magnetic induction intensity in the steel wire rope can be kept constant, the magnetic flux passing through the steel wire rope is in direct proportion to the cross section area of the steel wire rope, so that the axial main magnetic flux of the steel wire rope is measured, the section defect of the steel wire rope can be quantitatively detected, after the surface of the steel wire rope is damaged, the axial main magnetic flux of the steel wire rope can be changed, the Hall element 4 positioned near the surface of the steel wire rope can sense the normal component of the leakage magnetic field of the surface of the steel wire rope, and output corresponding voltage signals to the operational amplifier 5, after the voltage signals are processed by the operational amplifier 5, the processed data are transmitted to an external monitoring end through the data wire, and therefore whether the surface of the steel wire rope is damaged or not can be conveniently judged by a detector.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a double-ring detector based on hall effect, its characterized in that, including base (1), the top of base (1) is connected with holding ring (2), and the both ends of holding ring (2) inner wall all are connected with and detect ring (3), and the inner wall that detects ring (3) is connected with a plurality of equidistance hall element (4) that distribute, and the internal connection of base (1) has operational amplifier (5) that are connected with hall element (4) electricity.

2. A hall effect based dual annular detector according to claim 1, characterized in that the spacing between the detection rings (3) is 35mm.

3. The hall effect-based double-ring detector according to claim 1 or 2, wherein both ends of the positioning ring (2) are connected with a group of positioning components, each positioning component comprises a connecting plate (6), positioning plates (7), positioning wheels (8) and a rotating shaft (9), the side wall of the positioning ring (2) is connected with the connecting plate (6), one surface, close to the center position of the positioning ring (2), of the connecting plate (6) is connected with two positioning plates (7), the rotating shaft (9) is connected between the positioning plates (7), and the positioning wheels (8) are sleeved outside the rotating shaft (9).

4. A hall effect based double-ring detector according to claim 3, characterized in that the lower end of the positioning plate (7) is provided with a chute, the top of the chute is connected with a positioning column (10), the bottom end of the positioning column (10) penetrates through the rotating shaft (9) and is connected with the bottom of the chute, an elastic piece (11) is sleeved outside the upper end of the positioning column (10), the top of the elastic piece (11) is connected with the top of the chute, and the bottom of the elastic piece (11) is connected with the rotating shaft (9).

5. A hall effect based double annular detector according to claim 3, characterized in that the outer wall of the positioning wheel (8) is provided with arc-shaped grooves.

6. The hall effect based double annular detector according to claim 4, characterized in that the outer wall of the positioning wheel (8) is provided with arc-shaped grooves.

7. A hall effect based dual ring detector according to claim 1, 2, 4, 5 or 6, characterized in that the operational amplifier (5) is provided for an OP07 chip.

8. A hall effect based dual ring detector according to claim 3, characterized in that the operational amplifier (5) is provided for an OP07 chip.

9. The hall effect based dual ring detector of claim 1, 2, 4, 5, 6 or 8, wherein the output of the hall element (4) is electrically connected to the signal input of the operational amplifier (5), and the signal output of the operational amplifier (5) is electrically connected to the signal input of the external monitor through a data line.