CN220855149U

CN220855149U - Magnetic flux collector with detection function

Info

Publication number: CN220855149U
Application number: CN202322464732.3U
Authority: CN
Inventors: 刘付鹏; 王辅宋; 刘文峰
Original assignee: Jiangxi Fashion Technology Co Ltd
Current assignee: Jiangxi Fashion Technology Co Ltd
Priority date: 2023-09-12
Filing date: 2023-09-12
Publication date: 2024-04-26
Anticipated expiration: 2033-09-12

Abstract

The utility model provides a magnetic flux collector with a detection function, which comprises a body part, wherein an interface terminal used for being connected with a magnetic flux sensor is arranged on the body part, a circuit switching module, a signal processing module and a micro-controller are arranged in the body part, the signal processing module is electrically connected with the micro-controller, a circuit switching module is arranged between the signal processing module and the interface terminal, the circuit switching module is connected with a constant current source module, and the circuit switching module is used for enabling the interface terminal to be communicated with the signal processing module or enabling the constant current source module to be respectively communicated with the interface terminal and the signal processing module. Before data acquisition, the constant current source module is conducted with the interface terminal and the signal processing module, at the moment, the microcontroller can acquire the output voltage of the constant current source module to obtain a loop resistance, the loop resistance is compared with a theoretical resistance, and further the existence judgment of short circuit and open circuit is completed before acquisition, so that the damage of the magnetic flux acquisition instrument due to the existence of the short circuit or the open circuit during acquisition is avoided.

Description

Magnetic flux collector with detection function

Technical Field

The utility model relates to the technical field of cable force monitoring, in particular to a magnetic flux collector with a detection function.

Background

The magnetic flux sensor is made based on the principle of the magneto-elastic effect of ferromagnetic materials. When the external mechanical load born by the ferromagnetic material changes, the internal magnetic permeability of the ferromagnetic material changes, and the internal force of the member is measured by measuring the change of the magnetic permeability of the member made of the ferromagnetic material.

In cable force monitoring, the magnetic flux sensor consists of an excitation coil and an induction coil. When the magnetic flux sensor is sleeved on the cable material for measurement, pulse current is generated in the excitation coil through the excitation source, and the cable is magnetized to generate a pulse magnetic field in the longitudinal direction of the cable material. Due to electromagnetic induction, an induced voltage is generated in the induction coil, and the induced voltage is integrated over time to obtain the change in permeability of the cable material. The traditional magnetic flux collecting device is used for obtaining integral voltage by connecting the magnetic flux collecting instrument with the magnetic flux sensor, and further obtaining the stress condition of the cable through the linear relation formed by the integral voltage and the cable force.

However, when the magnetic flux sensor is connected with the magnetic flux collector, if the magnetic flux sensor has a short circuit or an open circuit between the magnetic flux sensor and the magnetic flux collector, a discharge loop is lost, and at this time, if the magnetic flux collector is still charged and discharged normally, the voltages at two ends of the exciting capacitor cannot be discharged, so that the magnetic flux collector is damaged.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide a magnetic flux collector with a detection function, and aims to solve the technical problems that in the prior art, if a magnetic flux sensor has a short circuit or an open circuit exists between the magnetic flux sensor and the magnetic flux collector, the magnetic flux collector is still normally charged and discharged, so that voltages at two ends of an excitation capacitor cannot be discharged, and the magnetic flux collector is damaged.

In order to achieve the above object, the present utility model is achieved by the following technical scheme:

The utility model provides a magnetic flux collection appearance that possesses detection function, includes body portion and places the portion, place the inside cavity of portion, form the cavity, body portion arranges in the cavity, place and set up damper in the portion, damper is used for slowing down body portion's vibrations, set up on the body portion and be used for the interface terminal who is connected with magnetic flux sensor, set up circuit switching module, signal processing module and microcontroller in the body portion, signal processing module with microcontroller electric connection, signal processing module with set up circuit switching module between the interface terminal, circuit switching module connects constant current source module, circuit switching module is used for making interface terminal with signal processing module intercommunication or make constant current source module respectively with interface terminal and signal processing module intercommunication.

Compared with the prior art, the utility model has the beneficial effects that: by arranging the circuit switching module and the constant current source module, before the magnetic flux collector collects the magnetic flux, the micro controller conducts the constant current source module with the interface terminal through the circuit switching module, and conducts the constant current source module with the signal processing module, at the moment, the micro controller can collect the output voltage of the constant current source module to obtain loop resistance, and compare the loop resistance with the theoretical resistance of the magnetic flux sensor, so that the existence judgment of short circuit and open circuit is completed before collection. The damage of the magnetic flux collector caused by the short circuit or open circuit during collection is avoided; simultaneously, through setting up place the portion and its interior damper can avoid rocking because of the cable cause body portion rocks, and then influences the accuracy of gathering data.

Further, the constant current source module includes adjusting unit, load resistance and amplifying unit, adjusting unit includes first triode and second triode, interface terminal connects the collecting electrode of first triode, the base of first triode is connected the collecting electrode of second triode, amplifying unit's one end is connected the base of second triode, load resistance's one end is connected the projecting pole of first triode with the projecting pole of second triode, load resistance's the other end is connected respectively amplifying unit's the other end and sampling resistance.

Still further, the amplifying unit includes first amplifier and second amplifier, the load resistance is connected the positive input of first amplifier, the sampling resistance is connected the negative input of first amplifier, the output of first amplifier is connected the negative input of second amplifier, the positive input of second amplifier is connected constant current output unit, the output of second amplifier is connected the base of second triode.

Further, a fixing mechanism is arranged at the bottom of the placement part and used for fixing the placement part on the reference surface.

Still further, fixed establishment includes bracing piece and supporting disk, the one end of bracing piece is connected place the bottom of portion, the other end of bracing piece is connected the supporting disk encircles the locking screw hole that the supporting disk set up a plurality of interval evenly distributed.

Still further, place the portion and include box body and lid, the lid is used for closing the box body.

Still further, damper including set up in first rubber pad and second rubber pad in the box body, first rubber pad is located the bottom of box body, the second rubber pad is located the top of box body, the second rubber pad is dorsad the one side of first rubber pad sets up rotates the seat, rotate the seat internal rotation and connect the screw thread depression bar, the screw thread depression bar keep away from the one end of second rubber pad passes the lid, and protruding in place outside the portion, just the screw thread depression bar spiro union in on the lid.

Further, one end of the threaded compression bar, which is far away from the second rubber pad, is connected with the rotating seat.

Drawings

FIG. 1 is a block diagram of a body portion of a magnetic flux collector with detection function in an embodiment of the present utility model;

Fig. 2 is a circuit diagram of a constant current source module in a magnetic flux collector with detection function according to an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a magnetic flux collector with detection function in a first view angle according to an embodiment of the present utility model;

fig. 4 is a schematic structural diagram of a magnetic flux collector with a detection function in a second view angle according to an embodiment of the present utility model;

FIG. 5 is a schematic diagram of a partially disassembled structure of a damping mechanism in a magnetic flux collector with detection function according to an embodiment of the present utility model;

description of main reference numerals:

10. A body portion; 110. an interface terminal; 120. a circuit switching module; 130. a signal processing module; 140. a micro controller; 150. a constant current source module; 151. an adjusting unit; 1511. a first triode; 1512. a second triode; 152. an amplifying unit; 1521. a first amplifier; 1522. a second amplifier; 153. a load resistor; 154. a sampling resistor; 155. a constant current output unit; 20. a placement unit; 210. a case body; 220. a cover body; 30. a damping mechanism; 310. a second rubber pad; 320. a rotating seat; 330. a threaded compression bar; 340. a rotating seat; 40. a fixing mechanism; 410. a support rod; 420. a support plate; 421. locking the threaded hole.

The utility model will be further described in the following detailed description in conjunction with the above-described figures.

Detailed Description

In order that the utility model may be readily understood, a more complete description of the utility model will be rendered by reference to the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein in the description of the utility model is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1, the magnetic flux collector with detection function in the embodiment of the utility model includes a body portion 10, an interface terminal 110 for connecting with a magnetic flux sensor is disposed on the body portion 10, a circuit switching module 120, a signal processing module 130 and a microcontroller 140 are disposed in the body portion 10, the signal processing module 130 is electrically connected with the microcontroller 140, a circuit switching module 120 is disposed between the signal processing module 130 and the interface terminal 110, the circuit switching module 120 is connected with a constant current source module 150, and the circuit switching module 120 is used for making the interface terminal 110 communicate with the signal processing module 130 or making the constant current source module 150 communicate with the interface terminal 110 and the signal processing module 130, respectively. Preferably, the signal processing module 130 is an instrumentation amplifier.

The constant current source module 150 includes a regulating unit 151, a load resistor 153 and an amplifying unit 152, where the regulating unit 151 includes a first triode 1511 and a second triode 1512, the interface terminal 110 is connected to a collector of the first triode 1511, a base of the first triode 1511 is connected to a collector of the second triode 1512, one end of the amplifying unit 152 is connected to a base of the second triode 1512, one end of the load resistor 153 is connected to an emitter of the first triode 1511 and an emitter of the second triode 1512, and the other end of the load resistor 153 is connected to the other end of the amplifying unit 152 and a sampling resistor 154, respectively. The amplifying unit 152 includes a first amplifier 1521 and a second amplifier 1522, the load resistor 153 is connected to a positive input terminal of the first amplifier 1521, the sampling resistor 154 is connected to a negative input terminal of the first amplifier 1521, an output terminal of the first amplifier 1521 is connected to a negative input terminal of the second amplifier 1522, a positive input terminal of the second amplifier 1522 is connected to the constant current output unit 155, and an output terminal of the second amplifier 1522 is connected to a base electrode of the second triode 1512, specifically, a circuit diagram of the constant current source is shown in fig. 2.

By setting the circuit switching module 120 and the constant current source module 150, before the magnetic flux collector collects the magnetic flux, the microcontroller 140 conducts the constant current source module 150 with the interface terminal 110 through the circuit switching module 120, and conducts the constant current source module 150 with the signal processing module 130, at this time, the microcontroller 140 can collect the output voltage of the constant current source module 150, the voltages at two ends of the interface terminal 110 pass through the signal processing module 130, the signal processing module 130 converts the differential signal into a single-ended signal, after the microcontroller 140 collects the single-ended signal, the single-ended signal is divided by the constant current value of the constant current source module 150 to obtain a loop resistance, and the loop resistance is compared with the theoretical resistance of the magnetic flux sensor, so that the existence judgment of the short circuit and the open circuit is completed before the collection. And if the loop resistance is within the range of the theoretical resistance, normally collecting, and if the loop resistance is outside the range of the theoretical resistance, judging that a short circuit or an open circuit exists, stopping collecting, and avoiding damage to the magnetic flux collector due to the short circuit or the open circuit during collecting.

Referring to fig. 3 to 5, when the magnetic flux collector collects data, the magnetic flux sensor is disposed on the cable, so that if the magnetic flux collector encounters weather such as strong wind, the cable will shake, and the magnetic flux collector will be driven to shake. Therefore, the magnetic flux collector with the detection function further comprises a placement portion 20, the placement portion 20 is hollow, a cavity is formed, the body portion 10 is disposed in the cavity, the placement portion 20 includes a case 210 and a cover 220, one end of the cover 220 is rotatably connected to one end of the case 210, the cover 220 is used for covering the case 210, and when the body portion 10 is disposed in the cavity, the cover 220 is covered on the case 210. Preferably, an observation portion penetrating through the case 210 is provided on the case 210, the observation portion is made of a transparent material, further, a plurality of cables are inserted into the body 10, and an interface slot corresponding to the cables is provided on the case 210.

The bottom of placing portion 20 sets up fixed establishment 40, fixed establishment 40 is used for with place portion 20 is fixed in on the reference surface, fixed establishment 40 includes bracing piece 410 and supporting disk 420, the one end of bracing piece 410 is connected place portion 20's bottom, the other end of bracing piece 410 is connected supporting disk 420 encircles supporting disk 420 sets up a plurality of interval evenly distributed's locking screw hole 421, through making locking screw's one end pass locking screw hole 421, and be fixed in on the reference surface, in order to accomplish place portion 20 in the fixed work on the reference surface. It will be appreciated that the bottom of the case 210 is provided with the securing mechanism 40.

The damping mechanism 30 is arranged in the placement part 20, the damping mechanism 30 is used for relieving vibration of the body part 10, and the vibration of the body part 10 caused by vibration of a cable can be avoided by arranging the placement part 20 and the damping mechanism 30 therein, so that accuracy of data acquisition is improved. Specifically, the damping mechanism 30 includes a first rubber pad and a second rubber pad 310 disposed in the box 210, the first rubber pad is located at the bottom of the box 210, the second rubber pad 310 is located at the top of the box 210, a rotating seat 320 is disposed on a surface of the second rubber pad 310 opposite to the first rubber pad, a threaded compression rod 330 is rotationally connected to the rotating seat 320, one end of the threaded compression rod 330, far away from the second rubber pad 310, passes through the cover 220 and protrudes out of the placement portion 20, and the threaded compression rod 330 is screwed onto the cover 220. When the body portion 10 is disposed in the space, the bottom of the body portion 10 abuts against the first rubber pad, and when the cover 220 covers the box 210, the second rubber pad 310 abuts against the top of the body portion 10 by rotating the threaded compression rod 330, and after the two are compressed, the body portion 10 is prevented from shaking. And by providing the first rubber pad and the second rubber pad 310, damage to the body 10 due to excessive pressing force can be avoided. Preferably, an end of the threaded compression bar 330 away from the second rubber pad 310 is connected to a rotating seat 340, and the rotation of the threaded compression bar 330 can be more convenient through the rotating seat 340.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing examples illustrate only a few embodiments of the utility model and are described in detail herein without thereby limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.

Claims

1. The utility model provides a magnetic flux collection appearance that possesses detection function, its characterized in that includes body portion and places the portion, place the inside cavity of portion, form the cavity, body portion arranges in the cavity, place and set up damper in the portion, damper is used for slowing down body portion's vibrations, set up on the body portion and be used for the interface terminal who is connected with magnetic flux sensor, set up circuit switching module, signal processing module and microcontroller in the body portion, signal processing module with microcontroller electric connection, signal processing module with set up circuit switching module between the interface terminal, circuit switching module connects constant current source module, circuit switching module is used for making interface terminal with signal processing module intercommunication or make constant current source module respectively with interface terminal and signal processing module intercommunication.

2. The magnetic flux collector with detection function according to claim 1, wherein the constant current source module comprises an adjusting unit, a load resistor and an amplifying unit, the adjusting unit comprises a first triode and a second triode, the interface terminal is connected with a collector of the first triode, a base of the first triode is connected with a collector of the second triode, one end of the amplifying unit is connected with a base of the second triode, one end of the load resistor is connected with an emitter of the first triode and an emitter of the second triode, and the other end of the load resistor is respectively connected with the other end of the amplifying unit and the sampling resistor.

3. The magnetic flux collector with detection function according to claim 2, wherein the amplifying unit comprises a first amplifier and a second amplifier, the load resistor is connected with a positive input end of the first amplifier, the sampling resistor is connected with a negative input end of the first amplifier, an output end of the first amplifier is connected with a negative input end of the second amplifier, a positive input end of the second amplifier is connected with a constant current output unit, and an output end of the second amplifier is connected with a base electrode of the second triode.

4. The magnetic flux collector with detection function according to claim 1, wherein a fixing mechanism is provided at a bottom of the placement portion, the fixing mechanism being for fixing the placement portion on a reference surface.

5. The magnetic flux collector with detection function according to claim 4, wherein the fixing mechanism comprises a supporting rod and a supporting disc, one end of the supporting rod is connected with the bottom of the placement part, the other end of the supporting rod is connected with the supporting disc, and a plurality of locking threaded holes which are uniformly distributed at intervals are formed around the supporting disc.

6. The magnetic flux collector with detection function according to claim 1, wherein the placement portion includes a case and a cover, and the cover is used for covering the case.

7. The magnetic flux collector with detection function according to claim 6, wherein the damping mechanism comprises a first rubber pad and a second rubber pad arranged in the box body, the first rubber pad is positioned at the bottom of the box body, the second rubber pad is positioned at the top of the box body, a rotating seat is arranged on one surface of the second rubber pad opposite to the first rubber pad, a threaded compression bar is rotationally connected in the rotating seat, one end of the threaded compression bar, which is far away from the second rubber pad, penetrates through the cover body and protrudes out of the placing part, and the threaded compression bar is in threaded connection with the cover body.

8. The magnetic flux collector with detection function according to claim 7, wherein one end of the threaded compression bar away from the second rubber pad is connected with a rotating seat.