CN212721290U

CN212721290U - Magnetic field vector angular displacement sensor rotary positioning device and circuit

Info

Publication number: CN212721290U
Application number: CN202021857395.4U
Authority: CN
Inventors: 郭荣岭; 许金豹; 王强
Original assignee: Shandong Qixin Intelligent Control Technology Co ltd
Current assignee: Shandong Qixin Intelligent Control Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-03-16
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a magnetic field vector angle displacement sensor rotary positioning device, includes electromagnetic support (1), drive electromagnetic support (1) pivoted actuating mechanism, electro-magnet (2) and magnetoresistive sensor (3), install in electromagnetic support (1) top electro-magnet (2), electromagnetic support (1) top is equipped with PCB circuit board (4), and magnetoresistive sensor (3) are installed on PCB circuit board (4), and magnetoresistive sensor (3) central line overlaps with electro-magnet (2) central line. The magnetic field vector angular displacement sensor rotation positioning circuit is further included. The method solves the defects of high precision coding price and only measuring relative position of the original measuring technology, solves the problem of service life abrasion loss in the potentiometer measuring method, prolongs the service life and solves the problem of inaccurate time control.

Description

Magnetic field vector angular displacement sensor rotary positioning device and circuit

Technical Field

The utility model belongs to the technical field of the valve aperture measurement technique and specifically relates to a magnetic field vector angle displacement sensor rotational positioning device, circuit.

Background

The traditional heat supply valve adopts an opening and closing mode, and the existing heat supply valve has the concept of opening degree in order to solve the purposes of regulating indoor temperature by heat supply and saving energy and reducing emission.

To measure the opening degree, the rotating angle must be measured, and at present, the measuring angles are various, such as the measurement by an encoder, and the defect is that the encoder is expensive; the potentiometer measurement has the defects that the measurement has a service life problem, and each measurement has loss; time measurement, the accuracy is too poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to solve above-mentioned problem, provide a magnetic field vector angle displacement sensor rotational positioning device, circuit.

The utility model provides a technical scheme that its technical problem adopted is:

the utility model provides a magnetic field vector angle displacement sensor rotary positioning mechanism, includes electromagnetic support, drive electromagnetic support pivoted actuating mechanism, electro-magnet and magnetoresistive sensor, the electro-magnet is installed in the electromagnetic support top, and the electromagnetic support top is equipped with the PCB circuit board, and magnetoresistive sensor installs on the PCB circuit board, and the magnetoresistive sensor central line overlaps with the electro-magnet central line.

Further, actuating mechanism adopts the motor, and the electromagnetic support lower extreme is equipped with first recess, and the motor output shaft cooperates with first recess.

Furthermore, a second groove is formed in the upper portion of the electromagnetic support, the electromagnet is located in the second groove, a clamping groove is formed in the side face of the electromagnet, a buckle is arranged on the inner wall of the second groove, and the clamping groove is matched with the buckle.

Furthermore, the electromagnet is a columnar electromagnet and is magnetized in the radial direction.

Furthermore, a stand column is arranged on the side face of the electromagnetic support, an indicating disc is arranged above the stand column, the central line of the indicating disc is overlapped with the central line of the output shaft of the motor, an arc-shaped groove is formed in the PCB, the stand column penetrates through the arc-shaped groove, the circle center of the arc-shaped groove is overlapped with the central line of the output shaft of the motor, and a pointer is arranged on the indicating disc.

A rotation positioning circuit of a magnetic field vector angular displacement sensor comprises a magnetoresistive sensor and a single chip microcomputer; the magnetic resistance sensor is used for measuring voltage generated when the magnet rotates and sending the voltage to the single chip microcomputer; the single chip microcomputer is used for calculating the opening rotation angle theta of the valve according to the output voltage value.

Further, the magneto-resistive sensor comprises a TMR3004 sensor, and the singlechip comprises an HC32L136KSTA chip; the X +, X-, Y + and Y-four pins of the TMR3004 sensor are respectively connected with the No. 28, No. 29, No. 27 and No. 30 pins of the HC32L136KSTA chip.

Further, the singlechip calculates the opening rotation angle theta of the valve by adopting the following formula:

calculating vector projection values of X and Y according to ADC values of four groups of output voltages of ADCX + and ADCX-, ADCY + and ADCY-through (ADCX +) - (ADCX-), (ADCY +) - (ADCY-);

the tan (theta) is calculated from the tan (theta) x/y, and the value of theta is calculated from the inverse function.

The utility model has the advantages that:

1. the utility model discloses be equipped with electromagnetic support, drive electromagnetic support pivoted actuating mechanism, electro-magnet and magnetoresistive sensor, the electro-magnet is installed in the electromagnetic support top, the electromagnetic support top is equipped with the PCB circuit board, magnetoresistive sensor installs on the PCB circuit board, through actuating mechanism driven electromagnet' S rotation, be N level above the line of demarcation in the middle of the magnet, be S level below the line of demarcation, the sensor can output the voltage waveform and be sine and cosine curve when magnet at the uniform velocity rotation when sensor top or below, through the vector projection value of detection magnetic field at x, two coordinate axes of y, then according to the vector synthesis principle: and (5) calculating an opening rotation angle theta of the valve, wherein the tan (theta) is x/y. The method solves the defects of high precision coding price and only measuring relative position of the original measuring technology, solves the problem of service life abrasion loss in the potentiometer measuring method, prolongs the service life and solves the problem of inaccurate time control.

2. The utility model discloses be equipped with the stand in the electromagnetic support side, the stand top is equipped with the dial, and the dial central line overlaps with motor output shaft central line, is equipped with the arc wall on the PCB circuit board, and the stand passes the arc wall, and the arc wall centre of a circle overlaps with motor output shaft central line, is equipped with the pointer on the dial, and the dial is used for the shutoff skylight, and the valve opening angle is conveniently observed to the pointer simultaneously.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a front view of the present invention;

fig. 3 is a cross-sectional view of the present invention;

fig. 4 is a schematic structural diagram of the electromagnetic bracket of the present invention;

fig. 5 is a schematic structural view of the electromagnetic bracket of the present invention;

fig. 6 is a schematic circuit diagram of a magnetic resistance sensor according to the present invention;

FIG. 7 is a schematic diagram of a circuit of the single chip microcomputer according to the present invention;

fig. 8 is a schematic diagram of an output curve of the magnetoresistive sensor according to the present invention;

in the figure: 1. electromagnetic support, 2, electro-magnet, 3, magnetic resistance sensor, 4, PCB circuit board, 5, motor, 6, first recess, 7, draw-in groove, 8, second recess, 9, stand, 10, dial, 11, arc wall, 12, pointer, 13, buckle.

Detailed Description

In order to make the technical solutions in the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

For convenience of description, a coordinate system is now defined as shown in fig. 1.

As shown in fig. 1 to 3, a magnetic field vector angle displacement sensor rotary positioning mechanism, includes

electromagnetic support

1, 1 pivoted actuating mechanism of drive electromagnetic support, electro-magnet 2 and magnetoresistive sensor 3, electro-magnet 2 installs in electromagnetic support 1 top, and electro-magnet 2 is circular, and electromagnetic support 1 top is equipped with PCB circuit board 4, and magnetoresistive sensor 3 installs on PCB circuit board 4, and the 3 central lines of magnetoresistive sensor overlap with 2 central lines of electro-magnet. The electromagnet 2 is driven to rotate by the driving mechanism, the N level is arranged above the middle boundary of the electromagnet, the S level is arranged below the boundary, when the magnet rotates above or below the sensor at a constant speed, the waveform of the voltage at the output end of the sensor is a sine-cosine curve, vector projection values of a magnetic field on x and y coordinate axes are detected, and then the vector synthesis principle is adopted: and (5) calculating an opening rotation angle theta of the valve, wherein the tan (theta) is x/y. The method solves the defects of high precision coding price and only measuring relative position of the original measuring technology, solves the problem of service life abrasion loss in the potentiometer measuring method, prolongs the service life and controls the time accurately.

As shown in fig. 1, 3 and 5, the driving mechanism adopts a motor 5, a first groove 6 is arranged at the lower end of the electromagnetic support 1, an output shaft of the motor 5 is matched with the first groove 6, a plane is arranged on the side surface of the first groove 6, and the plane is milled on the output shaft of the motor 5, so that the output shaft of the motor can drive the electromagnetic support 1 to rotate.

As shown in fig. 4, a second groove 8 is formed above the electromagnetic bracket 1, the electromagnet 2 is located in the second groove 8, a clamping groove 7 is formed in the side surface of the electromagnet 2, a buckle 13 is arranged on the inner wall of the second groove 8, the clamping groove 7 is matched with the buckle 13, the clamping groove 7 and the buckle 13 ensure that the electromagnet 2 can rotate along with the rotation of the electromagnetic bracket 1, and the reliability is good.

As shown in fig. 1 and 4, a vertical column 9 is arranged on the side surface of the electromagnetic support 1, an indicating plate 10 is arranged above the vertical column 9, the central line of the indicating plate 10 is overlapped with the central line of the output shaft of the motor 5, an arc-shaped groove 11 is arranged on the PCB 4, the vertical column 9 penetrates through the arc-shaped groove 11, the circle center of the arc-shaped groove 11 is overlapped with the central line of the output shaft of the motor 5, a pointer 12 is arranged on the indicating plate 10, the indicating plate 10 is used for plugging a skylight, and the pointer 12.

As shown in fig. 6 and 7, a magnetic field vector angular displacement sensor rotation positioning circuit comprises a magnetic resistance sensor and a single chip microcomputer; the magnetic resistance sensor is used for measuring voltage generated when the magnet rotates and sending the voltage to the single chip microcomputer; the single chip microcomputer is used for calculating the opening rotation angle theta of the valve according to the output voltage value.

The magneto-resistive sensor comprises a TMR3004 sensor, and the singlechip comprises an HC32L136KSTA chip; the X +, X-, Y + and Y-four pins of the TMR3004 sensor are respectively connected with the No. 28, No. 29, No. 27 and No. 30 pins of the HC32L136KSTA chip.

As shown in fig. 8, the utility model discloses can use the diameter to be 6mm, highly be 2.5 mm's cylinder magnet, TMR3004 sensor chip 1 volt power supply, when magnet is rotatory, TMR3004 sensor output sinusoidal.

The singlechip calculates the opening rotation angle theta of the valve by adopting the following formula:

In the description of the present invention, it should be noted that the terms "left", "right", "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be mechanically or electrically connected, directly or indirectly through intervening media, or may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Claims

1. The utility model provides a magnetic field vector angle displacement sensor rotary positioning device, its characterized in that includes electromagnetic support (1), drive electromagnetic support (1) pivoted actuating mechanism, electro-magnet (2) and magnetoresistive sensor (3), electro-magnet (2) are installed in electromagnetic support (1) top, and electromagnetic support (1) top is equipped with PCB circuit board (4), and magnetoresistive sensor (3) are installed on PCB circuit board (4), and magnetoresistive sensor (3) central line overlaps with electro-magnet (2) central line.

2. The rotary positioning device of the magnetic field vector angular displacement sensor according to claim 1, characterized in that the driving mechanism adopts a motor (5), the lower end of the electromagnetic bracket (1) is provided with a first groove (6), and the output shaft of the motor (5) is matched with the first groove (6).

3. The rotary positioning device of the magnetic field vector angular displacement sensor according to claim 1, wherein a second groove (8) is formed above the electromagnetic bracket (1), the electromagnet (2) is located in the second groove (8), a clamping groove (7) is formed in the side surface of the electromagnet (2), a buckle (13) is formed in the inner wall of the second groove (8), and the clamping groove (7) is matched with the buckle (13).

4. The rotary positioner of a magnetic field vector angular displacement sensor according to claim 3, wherein the electromagnets are cylindrical electromagnets and are radially magnetized.

5. The rotary positioning device of the magnetic field vector angular displacement sensor according to claim 1, wherein a vertical column (9) is arranged on the side surface of the electromagnetic support (1), an indicating disc (10) is arranged above the vertical column (9), the central line of the indicating disc (10) is overlapped with the central line of the output shaft of the motor (5), an arc-shaped groove (11) is arranged on the PCB circuit board (4), the vertical column (9) penetrates through the arc-shaped groove (11), the circle center of the arc-shaped groove (11) is overlapped with the central line of the output shaft of the motor (5), and a pointer (12) is arranged on the indicating disc (10).

6. A rotation positioning circuit of a magnetic field vector angular displacement sensor is characterized by comprising a magnetoresistive sensor and a single chip microcomputer; the magnetic resistance sensor sends voltage generated when the measuring magnet rotates to the single chip microcomputer; and the singlechip calculates the opening rotation angle theta of the valve according to the output voltage value.

7. The rotary positioning circuit of a magnetic field vector angular displacement sensor according to claim 6, wherein said magnetoresistive sensor comprises a TMR3004 sensor, said single chip microcomputer comprises a HC32L136KSTA chip; the X +, X-, Y + and Y-four pins of the TMR3004 sensor are respectively connected with the No. 28, No. 29, No. 27 and No. 30 pins of the HC32L136KSTA chip.

8. The rotary positioning circuit of a magnetic field vector angular displacement sensor according to claim 6, wherein the single chip microcomputer calculates the opening angle θ of the valve by adopting the following formula: