CN110470885B

CN110470885B - Hall current sensor with strong anti-interference capability

Info

Publication number: CN110470885B
Application number: CN201910797811.1A
Authority: CN
Inventors: 徐顺刚; 刘军; 何玉兵
Original assignee: Xuzhou Hualang Automation Equipment Co ltd
Current assignee: Xuzhou Hualang Automation Equipment Co ltd
Priority date: 2019-08-27
Filing date: 2019-08-27
Publication date: 2021-07-13
Anticipated expiration: 2039-08-27
Also published as: CN110470885A

Abstract

The invention relates to the technical field of sensors and discloses a Hall current sensor with strong anti-interference capability, which comprises a U-shaped silicon steel sheet and a shell, wherein the shell is of a hollow structure with an opening at the top, a supporting plate is movably connected in the shell and is connected with the shell through a buffer mechanism, a supporting rod is fixedly connected to the upper surface of one end, close to the supporting plate, of the supporting plate, the other end of the supporting rod is rotatably connected with a PCB circuit board through a rotating shaft, the PCB circuit board is connected with the supporting plate through a calibration mechanism, two symmetrical mounting blocks are fixedly connected to the upper surface of the PCB circuit board, grooves are formed in the upper surfaces of the mounting blocks, matched convex blocks are fixedly connected to positions, corresponding to the grooves, of two ends of the bottom of the U-shaped silicon steel sheet, and one side. This hall current sensor that interference killing feature is strong has made things convenient for hall current sensor's installation and current calibration, possesses good shock resistance moreover.

Description

Hall current sensor with strong anti-interference capability

Technical Field

The invention relates to the technical field of sensors, in particular to a Hall current sensor with strong anti-interference capability.

Background

The sensor is the foremost end for sending various parameters into a computer system to carry out intelligent monitoring and control. With the development of science and technology, the application of digital and networked sensors is increasingly widespread, and the advantages which are incomparable with the traditional mode become the trend and the mainstream of the technology.

In recent years, a new generation of power semiconductor devices largely enter the fields of power electronics, alternating current variable frequency speed regulation, inverter devices, switching power supplies and the like, hall current and voltage sensors are new generation industrial power sensors for measuring and controlling current and voltage developed in recent ten years, and are novel high-performance electrical detection elements.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides the Hall current sensor with strong anti-jamming capability, which has the advantages of convenience in installation, convenience in calibration, strong anti-impact capability and the like, and solves the problems that in the prior art, the Hall current sensor is large in size, difficult to install and fix, needs additional element current for calibration, adopts ferrite magnetic materials, and is poor in anti-impact and vibration capabilities.

(II) technical scheme

In order to realize the purposes of convenient installation, convenient calibration and strong shock resistance, the invention provides the following technical scheme: a Hall current sensor with strong anti-interference capability comprises a U-shaped silicon steel sheet and a shell, wherein the shell is of a hollow structure with an opening at the top, a supporting plate is movably connected in the shell and is connected with the shell through a buffer mechanism, a supporting rod is fixedly connected to the upper surface of the supporting plate close to one end, the other end of the supporting rod is rotatably connected with a PCB circuit board through a rotating shaft, the PCB circuit board is connected with the supporting plate through a calibration mechanism, two symmetrical mounting blocks are fixedly connected to the upper surface of the PCB circuit board, a groove is formed in the upper surface of each mounting block, matched convex blocks are fixedly connected to the positions, corresponding to the grooves, of the two ends of the bottom of the U-shaped silicon steel sheet, one side, away from the U-shaped silicon steel sheet, of each convex block abuts against the bottom of the groove, Hall elements are arranged at the notches of the U-, two all seted up the draw-in groove on the lateral wall of the back of the body of lug, the activity groove has been seted up to the position department that the inner wall of recess corresponds the draw-in groove, the first spring of tank bottom fixedly connected with of activity groove, the fixture block that the other end fixedly connected with of first spring matches with the draw-in groove, and fixture block and activity groove sliding connection, the one end that first spring was kept away from to the fixture block is the curved surface setting, and extends to in the draw-in groove, one side fixedly connected with pull rod that the fixture block is close to the activity groove tank bottom, the tank bottom that the other end of pull rod passed first spring and run through the activity groove outwards extends, and the tank bottom sliding.

Preferably, the calibration mechanism comprises a T-shaped chute formed in the upper surface of the support plate, a matched T-shaped slider is slidably connected in the T-shaped chute, a moving block is fixedly connected to the upper surface of the T-shaped slider, a fixed block is fixedly connected to a position, close to the support rod, of the upper surface of the support plate, an adjusting screw is rotatably connected to the side wall of the fixed block through a bearing, the other end of the adjusting screw penetrates through the moving block, the adjusting screw is in threaded connection with the moving block, a connecting rod is hinged to the upper surface of the moving block, and the other end of the connecting rod is hinged to the lower surface of the PCB circuit.

Preferably, buffer gear includes the slide bar of a plurality of fixed connection at the backup pad lower surface, and a plurality of slide bar evenly distributed, the inside lower surface of casing corresponds the slide cartridge that the position department fixedly connected with of slide bar matches, the one end that the backup pad was kept away from to the slide bar extends to in the slide cartridge and fixedly connected with second spring, and slide bar and slide cartridge sliding connection, the one end fixed connection that the slide bar was kept away from to the second spring is at the inside lower surface of slide cartridge.

Preferably, one end of the pull rod, which is far away from the fixture block, is fixedly connected with a pull ring.

Preferably, a ball groove is formed in one side, close to the bottom of the T-shaped sliding groove, of the T-shaped sliding block, a ball is connected in the ball groove in a rolling mode, one end, far away from the bottom of the ball groove, of the ball penetrates through a groove opening of the ball groove and extends outwards, and the ball is connected to the bottom of the T-shaped sliding groove in a rolling mode.

Preferably, one end of the adjusting screw rod, which is far away from the bearing, is fixedly connected with a rotating handle.

Preferably, the both ends of backup pad all fixedly connected with gag lever post, the other end fixed mounting of gag lever post has the gyro wheel, the roller groove of matcing is seted up to the position department that the inner wall of casing corresponds the gyro wheel, and gyro wheel and roller groove roll connection.

(III) advantageous effects

Compared with the prior art, the Hall current sensor with strong anti-interference capability provided by the invention has the following beneficial effects:

1. the Hall current sensor with strong anti-interference capability is characterized in that two convex blocks on a U-shaped silicon steel sheet correspond to the positions of the grooves on the mounting block through arranging the U-shaped silicon steel sheet, the PCB, the mounting block, the groove, the convex blocks, the clamping groove, the movable groove, the first spring, the fixture block and the pull rod, the U-shaped silicon steel sheet is pressed downwards, the curved surface of the fixture block is extruded by the convex blocks, so that the fixture block slides towards the direction of the bottom of the movable groove and compresses the first spring, when the convex block is abutted against the groove bottom of the groove, the first spring is reset, the clamping block is bounced into the clamping groove to complete clamping, the installation between the U-shaped silicon steel sheet and the PCB circuit board can be completed, the pull rod is pulled to drive the clamping block to slide into the movable groove, so that the clamping block is separated from the clamping groove, can dismantle U type silicon steel sheet get off, make things convenient for the dismouting between U type silicon steel sheet and the PCB circuit board to hall current sensor's installation has been made things convenient for.

2. This hall current sensor that interference killing feature is strong, through setting up PCB circuit board, bracing piece, T type spout, T type slider, movable block, adjusting screw and connecting rod, rotate adjusting screw, drive threaded connection's movable block motion to drive T type slider and slide along T type spout synchronization, the movable block drives articulated connecting rod, thereby makes and takes place the angle deflection between PCB circuit board and the bracing piece, calibrates the electric current through the angle of regulation and control PCB circuit board, convenient operation.

3. This hall current sensor that interference killing feature is strong through setting up U type silicon steel sheet, backup pad, slide bar, second spring and slide cartridge, adopts U type silicon steel sheet to increase current sensor's shock resistance, and the assurance system is suitable for under the adverse circumstances, and current sensor receives the impact force in addition, drives and takes place symmetrical slip between slide bar and the slide cartridge, cushions the impact force through the second spring, makes hall current sensor possess good shock resistance.

Drawings

Fig. 1 is a schematic structural diagram of a hall current sensor with strong anti-interference capability according to the present invention;

FIG. 2 is an enlarged view of portion A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 1;

fig. 4 is an enlarged view of a portion C in fig. 1.

In the figure: the device comprises a 1U-shaped silicon steel sheet, a 2 shell, a 3 supporting plate, a 4 supporting rod, a 5 PCB circuit board, a 6 mounting block, a 7 groove, an 8 bump, a 9 Hall element, a 10 clamping groove, a 11 movable groove, a 12 first spring, a 13 clamping block, a 14 pull rod, a 15T-shaped sliding groove, a 16T-shaped sliding block, a 17 moving block, an 18 fixing block, a 19 adjusting screw rod, a 20 connecting rod, a 21 sliding rod, a 22 sliding cylinder, a 23 second spring, a 24 pull ring, a 25 ball groove, a 26 ball, a 27 rotating handle, a 28 limiting rod, a 29 roller and a 30 roller groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-4, a hall current sensor with strong anti-interference capability comprises a U-shaped silicon steel sheet 1 and a housing 2, wherein the housing 2 is a hollow structure with an open top, a supporting plate 3 is movably connected in the housing 2, the supporting plate 3 is connected with the housing 2 through a buffer mechanism, a supporting rod 4 is fixedly connected to the upper surface of one end of the supporting plate 3, the other end of the supporting rod 4 is rotatably connected with a PCB circuit board 5 through a rotating shaft, the PCB circuit board 5 is connected with the supporting plate 3 through a calibration mechanism, two symmetrical mounting blocks 6 are fixedly connected to the upper surface of the PCB circuit board 5, a groove 7 is formed in the upper surface of each mounting block 6, matched convex blocks 8 are fixedly connected to the positions of the grooves 7 at two ends of the bottom of the U-shaped silicon steel sheet 1, one side of each convex block 8, which is far away from the U-shaped silicon steel sheet 1, abuts against the bottoms of the grooves 7, the Hall element 9 is electrically installed on the PCB 5, the opposite side walls of the two lugs 8 are respectively provided with a clamping groove 10, the inner wall of the groove 7 is provided with a movable groove 11 corresponding to the position of the clamping groove 10, the bottom of the movable groove 11 is fixedly connected with a first spring 12, the other end of the first spring 12 is fixedly connected with a clamping block 13 matched with the clamping groove 10, the clamping block 13 is connected with the movable groove 11 in a sliding way, one end of the clamping block 13 far away from the first spring 12 is arranged in a curved surface manner and extends into the clamping groove 10, one side of the clamping block 13 close to the bottom of the movable groove 11 is fixedly connected with a pull rod 14, the other end of the pull rod 14 penetrates through the first spring 12 and extends outwards through the bottom of the movable groove 11, the pull rod 14 is connected with the bottom of the movable groove 11 in a sliding way, the two lugs 8 on the U-shaped silicon steel sheet 1 correspond to the positions of the grooves 7 on the installation blocks, make fixture block 13 slide and compress first spring 12 towards the tank bottom direction of activity groove 11, when the tank bottom of lug 8 and recess 7 is contradicted, first spring 12 takes place to reset, accomplish the joint in popping fixture block 13 into draw-in groove 10, can accomplish the installation between U type silicon steel sheet 1 and PCB circuit board 5, pulling pull rod 14 drives fixture block 13 and slides in activity groove 11, make fixture block 13 break away from with draw-in groove 10, can dismantle U type silicon steel sheet 1, made things convenient for the dismouting between U type silicon steel sheet 1 and the PCB circuit board 5, thereby made things convenient for hall current sensor's installation.

The calibration mechanism comprises a T-shaped sliding groove 15 arranged on the upper surface of the support plate 3, a matched T-shaped sliding block 16 is connected in the T-shaped sliding groove 15 in a sliding manner, a moving block 17 is fixedly connected to the upper surface of the T-shaped sliding block 16, a fixed block 18 is fixedly connected to the position, close to the support rod 4, of the upper surface of the support plate 3, an adjusting screw 19 is rotatably connected to the side wall of the fixed block 18 through a bearing, the other end of the adjusting screw 19 penetrates through the moving block 17, the adjusting screw 19 is in threaded connection with the moving block 17, a connecting rod 20 is hinged to the upper surface of the moving block 17, the other end of the connecting rod 20 is hinged to the lower surface of the PCB circuit board 5, the adjusting screw 19 is rotated to drive the moving block 17 in threaded connection to move, so as to drive the T-shaped sliding block 16 to synchronously slide, the current is calibrated by regulating the angle of the PCB (printed circuit board) 5, so that the operation is convenient.

Buffer gear includes the slide bar 21 of a plurality of fixed connection at the 3 lower surfaces of backup pad, and a plurality of slide bar 21 evenly distributed, the slide cylinder 22 that the inside lower surface of casing 2 corresponds the position department fixedly connected with matching of slide bar 21, the one end that backup pad 3 was kept away from to slide bar 21 extends to in the slide cylinder 22 and fixedly connected with second spring 23, and slide bar 21 and slide cylinder 22 sliding connection, the one end fixed connection that slide bar 21 was kept away from to second spring 23 is at the inside lower surface of slide cylinder 22, adopt U type silicon steel sheet 1 to increase current sensor's shock resistance, the assurance system is suitable for under adverse circumstances, and when current sensor received the impact force, drive and take place symmetrical slip between slide bar 21 and the slide cylinder 22, cushion impact force through second spring 23, make hall current sensor possess good shock resistance.

One end of the pull rod 14 far away from the fixture block 13 is fixedly connected with a pull ring 24, so that the pull rod 14 is conveniently driven to slide.

The ball groove 25 is opened to one side that T type slider 16 is close to T type spout 15 tank bottom, and roll connection has ball 26 in the ball groove 25, and ball 26 is kept away from the notch of ball groove 25 and outwards extends in the one end of ball groove 25 tank bottom, and roll connection is at the tank bottom of T type spout 15, reduces the frictional force between T type slider 16 and T type spout 15.

And one end of the adjusting screw rod 19, which is far away from the bearing, is fixedly connected with a rotating handle 27, so that the rotation of the adjusting screw rod 19 is conveniently controlled.

Both ends of the supporting plate 3 are fixedly connected with limiting rods 28, the other ends of the limiting rods 28 are fixedly provided with idler wheels 29, matched idler wheel grooves 30 are formed in the positions, corresponding to the idler wheels 29, of the inner wall of the shell 2, the idler wheels 29 are in rolling connection with the idler wheel grooves 30, the supporting plate 3 can be conveniently limited in lifting, and the sliding rod 21 is prevented from being separated from the sliding barrel 22.

In conclusion, according to the hall current sensor with strong anti-interference capability, the two convex blocks 8 on the U-shaped silicon steel sheet 1 correspond to the positions of the grooves 7 on the mounting block 6, the U-shaped silicon steel sheet 1 is pressed downwards, the curved surfaces of the clamping blocks 13 are extruded by the convex blocks 8, so that the clamping blocks 13 slide towards the direction of the bottom of the movable groove 11 and compress the first springs 12, when the convex blocks 8 are abutted against the bottom of the grooves 7, the first springs 12 reset, the clamping blocks 13 are popped into the clamping grooves 10 to complete clamping, and therefore, the mounting between the U-shaped silicon steel sheet 1 and the PCB circuit board 5 can be completed, the pull rod 14 is pulled to drive the clamping blocks 13 to slide into the movable groove 11, so that the clamping blocks 13 are separated from the clamping grooves 10, and the U-shaped silicon steel sheet 1 can be dismounted, the dismounting between the U-shaped silicon steel sheet 1 and the PCB circuit; the adjusting screw rod 19 is rotated to drive the moving block 17 in threaded connection to move, so that the T-shaped sliding block 16 is driven to synchronously slide along the T-shaped sliding groove 15, the moving block 17 drives the hinged connecting rod 20, so that the angle deflection is generated between the PCB circuit board 5 and the supporting rod 4, the current is calibrated by regulating and controlling the angle of the PCB circuit board 5, and the operation is convenient; adopt U-shaped silicon steel sheet 1 to increase current sensor's shock strength, guarantee that the system is suitable for under the adverse circumstances, when current sensor receives the impact force moreover, drive and take place symmetrical slip between slide bar 21 and the slide cartridge 22, cushion the impact force through second spring 23, make hall current sensor possess good shock resistance.

It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

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

Claims

1. The utility model provides a hall current sensor that interference killing feature is strong, includes U type silicon steel sheet (1) and casing (2), its characterized in that: the shell (2) is of a hollow structure with an open top, a support plate (3) is movably connected in the shell (2), the support plate (3) is connected with the shell (2) through a buffer mechanism, a support rod (4) is fixedly connected to the upper surface of one end, close to the support plate (3), of the support plate (4), the other end of the support rod (4) is rotatably connected with a PCB (5) through a rotating shaft, the PCB (5) is connected with the support plate (3) through a calibration mechanism, two symmetrical installation blocks (6) are fixedly connected to the upper surface of the PCB (5), a groove (7) is formed in the upper surface of each installation block (6), a matched convex block (8) is fixedly connected to the position of the groove (7) corresponding to two ends of the bottom of the U-shaped silicon steel sheet (1), and one side, away from the U-shaped silicon steel sheet (1), of each convex block (8) is abutted to the groove, the U-shaped silicon steel sheet is characterized in that a Hall element (9) is arranged at the notch of the U-shaped silicon steel sheet (1), the Hall element (9) is electrically installed on a PCB (printed circuit board) 5, clamping grooves (10) are respectively formed in the side walls of the two lugs (8) which are opposite to each other, a movable groove (11) is formed in the position, corresponding to the clamping grooves (10), of the inner wall of the groove (7), a first spring (12) is fixedly connected to the bottom of the movable groove (11), a clamping block (13) matched with the clamping grooves (10) is fixedly connected to the other end of the first spring (12), the clamping block (13) is slidably connected with the movable groove (11), one end, far away from the first spring (12), of the clamping block (13) is arranged in a curved surface mode and extends into the clamping grooves (10), a pull rod (14) is fixedly connected to one side, close to the bottom of the movable groove (11), of the clamping block (13), and the other end of the pull rod (14), and the pull rod (14) is connected with the bottom of the movable groove (11) in a sliding way.

2. The hall current sensor of claim 1, which is robust against interference, and which comprises: the calibration mechanism comprises a T-shaped sliding groove (15) formed in the upper surface of a supporting plate (3), a matched T-shaped sliding block (16) is connected to the T-shaped sliding groove (15) in a sliding mode, a moving block (17) is fixedly connected to the upper surface of the T-shaped sliding block (16), a fixed block (18) is fixedly connected to the position, close to a supporting rod (4), of the upper surface of the supporting plate (3), an adjusting screw rod (19) is rotatably connected to the side wall of the fixed block (18) through a bearing, the other end of the adjusting screw rod (19) penetrates through the moving block (17) and is in threaded connection with the moving block (17), a connecting rod (20) is hinged to the upper surface of the moving block (17), and the other end of the connecting rod (20) is hinged to the lower surface of a PCB.

3. The hall current sensor of claim 1, which is robust against interference, and which comprises: buffer gear includes slide bar (21) of a plurality of fixed connection at backup pad (3) lower surface, and a plurality of slide bar (21) evenly distributed, the slide cartridge (22) that the position department fixedly connected with of slide bar (21) matches is corresponded to the inside lower surface of casing (2), the one end that backup pad (3) were kept away from in slide bar (21) extends to slide cartridge (22) in and fixedly connected with second spring (23), and slide bar (21) and slide cartridge (22) sliding connection, the one end fixed connection of slide bar (21) is kept away from in second spring (23) is at the inside lower surface of slide cartridge (22).

4. The hall current sensor of claim 1, which is robust against interference, and which comprises: one end of the pull rod (14) far away from the fixture block (13) is fixedly connected with a pull ring (24).

5. The hall current sensor of claim 2, wherein the hall current sensor has a high immunity to interference, and further comprises: ball groove (25) have been seted up to one side that T type slider (16) are close to T type spout (15) tank bottom, and ball groove (25) interior roll motion is connected with ball (26), ball (26) are kept away from the one end of ball groove (25) tank bottom and are passed the notch of ball groove (25) and outwards extend, and roll connection is at the tank bottom of T type spout (15).

6. The hall current sensor of claim 2, wherein the hall current sensor has a high immunity to interference, and further comprises: and one end of the adjusting screw rod (19) far away from the bearing is fixedly connected with a rotating handle (27).

7. The hall current sensor of claim 1, which is robust against interference, and which comprises: the equal fixedly connected with gag lever post (28) in both ends of backup pad (3), the other end fixed mounting of gag lever post (28) has gyro wheel (29), the roller groove (30) of matcing are seted up to the position department that the inner wall of casing (2) corresponds gyro wheel (29), and gyro wheel (29) and roller groove (30) roll connection.