CN205120106U - Horizontal measuring device of electromagnetic type - Google Patents

Abstract

The utility model relates to an electromagnetic levelness measuring device, which comprises a first permanent magnet, a glass tube, a plurality of Hall elements and a second permanent magnet, the first permanent magnet is placed above the glass tube, and a plurality of The Hall elements are horizontally spaced and placed side by side at the lower end of the glass tube, the second permanent magnet is placed under a plurality of the Hall elements, oil is provided in the glass tube, and the oil is Movable air bubbles are provided, the first permanent magnet and the second permanent magnet are used to generate a magnetic field, and the air bubbles are used to change the medium in the magnetic field, so that the magnetic field intensity changes accordingly, and a plurality of the Hall The element outputs the corresponding Hall current according to the change of the magnetic field strength. Compared with the prior art, the utility model has simple production process, low processing cost and high detection precision.

Description

An electromagnetic levelness measuring device

technical field

The utility model relates to the technical field of measuring tools, in particular to an electromagnetic levelness measuring device.

Background technique

The level meter is a common measuring tool for measuring small angles. In the machinery industry and instrument manufacturing, it is used to measure the inclination angle relative to the horizontal position, the flatness and straightness of the guide rail of machine tool equipment, the horizontal position and vertical position of equipment installation, etc. According to the shape of the level, it can be divided into: universal level, cylindrical level, integrated level, mini level, camera level, frame level, ruler level; according to the fixing method of the level, it can be divided into: adjustable level and Non-adjustable spirit level.

At present, the common levels on the market mainly include electronic levels based on single-chip microcomputers and bubble capacitive levels. The working principle of the electronic level is mainly based on the principle of inductance, that is, when the base of the level is tilted due to the inclination of the workpiece to be measured, the voltage of the induction coil caused by the movement of the internal pendulum will change. The measurement principle of the capacitive level is that a circular pendulum hangs freely on a thin wire. The pendulum is affected by the gravity of the center of the earth and is suspended in a frictionless state. There are electrodes on both sides of the pendulum and the capacitance is equal when the gap is the same. If the level is affected by the workpiece to be measured, the different distances between the two gaps will produce different capacitances and angle differences.

The electronic level has the advantage of high measurement accuracy, but the technical process is complicated and the production accuracy is high, so the cost is high; the bubble capacitive level is low in cost and easy to process, but the measurement accuracy is low; therefore, the utility model combines the two Based on the advantages, a new type of electromagnetic levelness measuring device is designed, which can not only meet the accuracy requirements, but also reduce the cost.

Utility model content

The technical problem to be solved by the utility model is to provide an electromagnetic levelness measuring device with simple production process, low processing cost and high detection accuracy.

The technical solution of the utility model for solving the above-mentioned technical problems is as follows: an electromagnetic levelness measuring device includes a first permanent magnet, a glass tube, a plurality of Hall elements and a second permanent magnet, and the first permanent magnet is placed in the Above the glass tube, a plurality of the Hall elements are horizontally spaced and placed side by side at the lower end of the glass tube, the second permanent magnet is placed below the plurality of Hall elements, and the glass tube is provided with oil liquid, and the oil liquid is provided with movable air bubbles, the first permanent magnet and the second permanent magnet are used to generate a magnetic field, and the air bubbles are used to change the medium in the magnetic field, so that the magnetic field strength has a corresponding The plurality of Hall elements output corresponding Hall currents according to the change of the magnetic field strength.

The beneficial effects of the utility model are: on the basis of the traditional bubble level, a permanent magnet and a Hall element are added, and the change of the inclination angle and direction of the detected part corresponds to the change of the magnetic field, and the change is detected by the Hall element , and output in the form of current, so that the measurement accuracy is more accurate; the overall structure of the device is simple, easy to produce, low production cost, and high detection accuracy.

On the basis of the above technical solutions, the utility model can also be improved as follows.

Further, there are two Hall elements, and the two Hall elements are horizontally spaced and placed side by side at the lower end of the glass tube.

The beneficial effect of adopting the above further scheme is that two Hall elements are used for detection, and the detection accuracy is improved.

Further, the first permanent magnet is the N pole of the magnetic field, and the second permanent magnet is the S pole of the magnetic field.

Further, it also includes an amplifying circuit, a digital-to-analog conversion circuit and a single-chip microcomputer, the input terminals of the amplifying circuit are respectively connected to the output terminals of a plurality of the Hall elements, and the output terminals of the amplifying circuit are connected to the output terminals of the digital-to-analog conversion circuit. The input end is connected, and the output end of the digital-to-analog conversion circuit is connected to the single-chip microcomputer; a plurality of the Hall elements respectively output the Hall current generated by them to the amplifier circuit;

The amplifying circuit is used to amplify multiple Hall currents, and output the amplified multiple Hall currents to a digital-to-analog conversion circuit;

The digital-to-analog conversion circuit is used to perform digital-to-analog conversion on a plurality of amplified Hall currents, generate a plurality of digital quantities and transmit them to the single-chip microcomputer;

The single-chip microcomputer is used to process a plurality of digital quantities to obtain the data of the inclination angle and direction of the detected part.

The beneficial effect of adopting the above further solution is: through the processing of the amplification circuit, the digital-to-analog conversion circuit and the single-chip microcomputer, the processing accuracy of multiple Hall currents is improved, and the detection is more sensitive.

Further, a display is also included, the display is connected to the output end of the single-chip microcomputer, and the display is used to display the data of the inclination angle and direction of the detected part.

The beneficial effect of adopting the above further scheme is that the display facilitates the detection personnel to have a more intuitive understanding of the detection results.

Description of drawings

Fig. 1 is the structural representation of a kind of electromagnetic levelness measuring device of the present utility model;

Fig. 2 is a module block diagram of an electromagnetic levelness measuring device of the present invention.

In the accompanying drawings, the list of parts represented by each label is as follows:

1. First permanent magnet, 2. Glass tube, 3. Hall element, 4. Second permanent magnet, 5. Oil, 6. Bubble, 7. Amplifying circuit, 8. Digital-to-analog conversion circuit, 9. Single-chip microcomputer, 10. Display.

detailed description

The principles and features of the present utility model are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the utility model, and are not used to limit the scope of the utility model.

As shown in Figures 1 and 2, an electromagnetic levelness measuring device includes a first permanent magnet 1, a glass tube 2, a plurality of Hall elements 3 and a second permanent magnet 4, and the first permanent magnet 1 is placed Above the glass tube 2, a plurality of the Hall elements 3 are horizontally spaced and placed side by side at the lower end of the glass tube 2, and the second permanent magnet 4 is placed below the plurality of Hall elements 3, The glass tube 2 is provided with an oil liquid 5, and the oil liquid 5 is provided with movable air bubbles 6, the first permanent magnet 1 and the second permanent magnet 4 are used to generate a magnetic field, and the air bubbles 6 is used to change the medium in the magnetic field, so that the magnetic field strength changes accordingly, and the multiple Hall elements 3 output corresponding Hall currents according to the change of the magnetic field strength.

Preferably, two Hall elements 3 are provided, and the two Hall elements 3 are horizontally spaced and placed side by side at the lower end of the glass tube 2 .

Preferably, the first permanent magnet is the N pole of the magnetic field, and the first permanent magnet is the S pole of the magnetic field.

Preferably, also include amplifying circuit 7, digital-to-analog conversion circuit 8 and single-chip microcomputer 9, the input end of described amplifying circuit 7 is connected with the output end of a plurality of described Hall elements 3 respectively, the output end of described amplifying circuit 7 is connected with The input terminal of the digital-to-analog conversion circuit 8 is connected, and the output terminal of the digital-to-analog conversion circuit 8 is connected to the single-chip microcomputer 9; a plurality of the Hall elements 3 output the Hall currents generated by them to the amplifier circuit respectively;

The amplifying circuit 7 is used to amplify multiple Hall currents, and output the amplified multiple Hall currents to the digital-to-analog conversion circuit 8;

The digital-to-analog conversion circuit 8 is used to perform digital-to-analog conversion on a plurality of amplified Hall currents, generate a plurality of digital quantities and transmit them to the single-chip microcomputer 9;

The single-chip microcomputer 9 is used to process a plurality of digital quantities to obtain data on the tilt angle and direction of the detected part;

It also includes a display 10, which is connected to the output end of the single-chip microcomputer 9, and the display 10 is used to display the data of the inclination angle and direction of the detected part.

This device is implemented. On the basis of the traditional bubble level, this device adds permanent magnets and Hall elements. The change of the tilt angle and direction of the detected part corresponds to the change of the magnetic field. This change is detected by the Hall element and then Output in the form of current;

Place the device on the detected part, the air bubble 6 in the glass tube 2 moves, and the medium in the magnetic field between the first permanent magnet 1 and the second permanent magnet 4 changes, so that the magnetic field strength changes accordingly The plurality of Hall elements 3 output corresponding Hall currents according to the change of the magnetic field strength, the amplifier circuit 7 respectively amplifies the plurality of Hall currents, and outputs the amplified plurality of Hall currents to the digital-to-analog conversion circuit 8. The digital-to-analog conversion circuit 8 performs digital-to-analog conversion on the multiple amplified Hall currents, generates multiple digital quantities and transmits them to the single-chip microcomputer 9, and the single-chip microcomputer 9 processes the multiple digital quantities to obtain the tilt angle and direction of the detected part The display 10 displays the data of the inclination angle and direction of the detected part, so that the measurement accuracy is more accurate; the overall structure of the device is simple, easy to produce, low in production cost, and high in detection accuracy.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present utility model shall be included in this utility model. within the scope of protection of utility models.

Claims (5)

1. an electromagnetic type levelness measuring device, it is characterized in that: comprise the first permanent magnet (1), glass tube (2), multiple Hall element (3) and the second permanent magnet (4), described first permanent magnet (1) is placed in the top of described glass tube (2), multiple described Hall element (3) horizontal intervals are placed in the lower end of described glass tube (2) side by side, described second permanent magnet (4) is placed in the below of multiple described Hall element (3), fluid (5) is provided with in described glass tube (2), and be provided with moveable bubble (6) in described fluid (5), described first permanent magnet (1) and described second permanent magnet (4) are for generation of magnetic field, described bubble (6) is for changing the medium in magnetic field, make magnetic field intensity that corresponding change occur, multiple described Hall element (3) exports corresponding Hall current according to the change of magnetic field intensity.

2. a kind of electromagnetic type levelness measuring device according to claim 1, it is characterized in that: described Hall element (3) is provided with two, two described Hall element (3) horizontal intervals are placed in the lower end of described glass tube (2) side by side.

3. a kind of electromagnetic type levelness measuring device according to claim 1, it is characterized in that: described first permanent magnet is the N pole in magnetic field, described second permanent magnet is the S pole in magnetic field.

4. a kind of electromagnetic type levelness measuring device according to any one of claims 1 to 3, it is characterized in that: also comprise amplifying circuit (7), D/A converting circuit (8) and single-chip microcomputer (9), the input end of described amplifying circuit (7) is connected with the output terminal of multiple described Hall element (3) respectively, the output terminal of described amplifying circuit (7) is connected with the input end of described D/A converting circuit (8), and the output terminal of described D/A converting circuit (8) is connected with described single-chip microcomputer (9).

5. a kind of electromagnetic type levelness measuring device according to claim 4, it is characterized in that: also comprise display (10), described display (10) is connected with the output terminal of described single-chip microcomputer (9).