WO2021147621A1

WO2021147621A1 - Level meter and measuring method therefor

Info

Publication number: WO2021147621A1
Application number: PCT/CN2020/140441
Authority: WO
Inventors: 胡谦谦; 谢辰栋; 窦胜仁
Original assignee: 京东方科技集团股份有限公司; 合肥京东方视讯科技有限公司
Priority date: 2020-01-21
Filing date: 2020-12-28
Publication date: 2021-07-29
Also published as: CN111256660A

Abstract

Provided are a level meter and a measurement method therefor. The level meter comprises: a measurement body (1), a data collection and processing circuit, and an output circuit (2). The measurement body (1) comprises a tilt angle measurement structure (11), the tilt angle measurement structure (11) comprising an accommodating cavity (111) and a gravity ball (112) that is located in the accommodating cavity (111) and can move therein, wherein the accommodating cavity (111) makes the gravity ball (112) slide on two surfaces (a1, a2) that are arranged opposite each other in a first direction and two surfaces (a3, a4) that are arranged opposite each other in a second direction, and stops the gravity ball (112) from being in contact with two surfaces (a5, a6) that are arranged opposite each other in a third direction. The two surfaces (a1, a2) that are arranged opposite each other in the first direction and the two surfaces (a3, a4) that are arranged opposite each other in the second direction are all provided with pressure sensors (113), and the pressure sensors (113) are configured to measure, when the gravity ball (112) generates a pressure and applies same to a corresponding surface, the pressure applied to each surface and convert the pressure into an electrical signal to transmit the electrical signal to the data collection and processing circuit. The data collection and processing circuit is configured to determine, according to the acquired electrical signal, a tilt angle of an object to be subjected to measurement, and transmit data of the tilt angle to the output circuit (2) for outputting.

Description

Level meter and its measuring method

Cross-references to related applications

This application claims the priority of a Chinese patent application filed with the Chinese Patent Office on January 21, 2020, the application number is 202010072121.2, and the application name is "a level meter and its measurement method", the entire content of which is incorporated into this application by reference .

Technical field

The present disclosure relates to the technical field of level measurement, in particular to a level meter and its measuring method.

Background technique

As a measuring tool, the spirit level has become more and more widely used in major industries such as industry, construction, and military industries. For example, in the TV and display manufacturing industries, it is often necessary to test the height difference between the left and right top corners of the whole machine when it is placed horizontally, so as to adjust accordingly to meet the needs of the whole machine test.

Summary of the invention

In one aspect, the embodiments of the present disclosure provide a spirit level, which includes:

Measurement body, data acquisition and processing circuit and output circuit;

The measurement body includes: an inclination angle measurement structure, the inclination angle measurement structure includes a accommodating cavity and a movable gravity ball located in the accommodating cavity;

The accommodating cavity includes two surfaces opposed to each other in a first direction, two opposed surfaces in a second direction, and two opposed surfaces in a third direction, wherein the first direction, the The second direction and the third direction are both perpendicular to each other;

The accommodating cavity is configured to cause the gravity ball to slide on two opposing surfaces in the first direction and two opposing surfaces in the second direction, and to prevent the gravity ball from interacting with all the surfaces. The two oppositely arranged surfaces contact in the third direction;

The two oppositely arranged surfaces in the first direction and the two oppositely arranged surfaces in the second direction are both provided with pressure sensors, and the pressure sensors are configured to generate pressure when the gravity ball acts on the corresponding When detecting the surface, the pressure on each surface is converted into an electrical signal and transmitted to the data acquisition and processing circuit;

The data acquisition and processing circuit is configured to determine the tilt angle of the object to be measured according to the acquired electrical signal, and transmit the tilt angle data to the output circuit;

The output circuit is configured to receive the data of the tilt angle and output it.

In a possible implementation manner, in the spirit level provided by the embodiment of the present disclosure, the test body further includes: in the first direction, a telescopic part located at at least one end of the measuring body, the telescopic part and The measuring body is flexibly arranged in the first direction;

A displacement transmission circuit, the displacement transmission circuit is configured to determine the expansion and contraction length of the expansion and contraction part according to the amount of expansion and contraction of the expansion and contraction part, and provide the expansion and contraction length to the data collection and processing circuit;

The data acquisition and processing circuit is also configured to obtain the telescopic length, and determine that the object to be measured is located at the telescopic length, the length of the measuring body in the first direction, and the inclination angle. The height difference between the two ends in the first direction, and the height difference is provided to the output circuit;

The output circuit is also configured to receive data corresponding to the height difference and output it.

In a possible implementation manner, in the level meter provided in the embodiment of the present disclosure, the data collection and processing circuit includes: a pressure processing sub-circuit, an arithmetic processing sub-circuit, and a digital display processing sub-circuit;

The pressure processing sub-circuit is configured to obtain the electrical signal collected by the pressure sensor located on each surface, and determine the pressure on each surface according to the electrical signal;

The arithmetic processing sub-circuit is configured to determine the inclination angle of the object to be measured according to the pressure on each surface and the functional relationship between the pressure and the inclination angle;

The digital display processing sub-circuit is configured to transmit the tilt angle data to the output circuit.

In a possible implementation manner, in the spirit level provided by the embodiment of the present disclosure, the cross section of the receiving cavity parallel to the second direction and the third direction is circular, and the two third directions are opposite to each other. The surface has gaps in the predetermined distance on both sides of the central axis of the cross section along the third direction; the diameter of the cross section is larger than the diameter of the gravity ball, and the center of the cross section is located at the position of the measuring body. The central axes in the third direction do not overlap each other.

In a possible implementation manner, in the spirit level provided by the embodiment of the present disclosure, the diameter of the cross section is 1 mm to 3 mm larger than the diameter of the gravity ball.

In a possible implementation manner, in the spirit level provided by the embodiment of the present disclosure, in the first direction, both ends of the measuring body include the telescopic part.

In a possible implementation manner, in the spirit level provided by the embodiment of the present disclosure, the telescopic part has a size scale.

In a possible implementation manner, in the level meter provided in the embodiment of the present disclosure, the displacement transmitting sub-circuit is a magnetostrictive displacement transmitter.

In a possible implementation manner, in the level meter provided in an embodiment of the present disclosure, the output circuit includes a display.

On the other hand, the embodiments of the present disclosure also provide a method for measuring a level meter, including:

Placing the spirit level on the object to be measured;

Each of the pressure sensors provides the acquired electrical signal to the data collection and processing circuit;

The data acquisition and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, and provides the inclination angle to the output circuit;

The output circuit receives the data corresponding to the tilt angle and outputs it.

In a possible implementation manner, in the method for measuring a level gauge provided in an embodiment of the present disclosure, the data collection and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, which specifically includes:

The pressure processing sub-circuit acquires the electrical signal collected by the pressure sensor located on each surface, and determines the pressure on each surface according to the electrical signal;

The arithmetic processing sub-circuit determines the inclination angle of the object to be measured according to the pressure on each surface and a preset functional relationship between the pressure and the inclination angle;

The digital display processing sub-circuit converts the tilt angle into corresponding data to be output.

In a possible implementation manner, the measuring method of the level provided in the embodiment of the present disclosure further includes:

Adjust the telescopic part so that the end of the telescopic part away from the measuring body is located at the end of the object to be measured;

The displacement transmission circuit determines the expansion and contraction length of the expansion and contraction part according to the expansion and contraction amount of the expansion and contraction part, and provides the expansion and contraction length to the data collection and processing circuit;

The data collection and processing circuit acquires the telescopic length, and determines that the object to be measured is in the first direction based on the telescopic length, the length of the measuring body in the first direction, and the inclination angle. The height difference between the upper ends, and the height difference is provided to the output circuit;

The output circuit receives the data corresponding to the height difference and outputs it.

Description of the drawings

FIG. 1 is one of the structural schematic diagrams of a level provided by an embodiment of the disclosure;

2 is a schematic cross-sectional structure diagram of a tilt angle measurement structure provided by an embodiment of the disclosure;

Fig. 3 is a schematic structural diagram of the measurement principle of the level shown in Fig. 1;

4 is a schematic structural diagram of a pressure sensor provided by an embodiment of the disclosure;

FIG. 5 is one of the structural schematic diagrams of the spirit level provided by the embodiments of the disclosure;

Fig. 6 is a schematic structural diagram of the measurement principle of the level shown in Fig. 5;

FIG. 7 is a flowchart of a method for measuring a spirit level provided by an embodiment of the disclosure.

Detailed ways

In the related art, the height difference is obtained by measuring the height from the top left corner to the plane and the height from the top right corner to the plane by calculating the difference. Since the distance from the manually measured point to the plane cannot be guaranteed to be absolutely vertical, there is a large error in the measurement, and the final height difference obtained also has a large error. The current bubble level and pendulum level meter can measure the inclination angle, but the applicable angle range of the two types of level meters is small, the bubble level is greatly affected by temperature, and the pendulum level has a large volume and is not easy to carry.

Based on the level meter in the related art that is only suitable for small angle measurement and has the problems of poor environmental adaptability and poor portability, embodiments of the present disclosure provide a level meter and a measurement method thereof. In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the specific implementation of a level and its measurement method provided by the embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present disclosure, and are not used to limit the present disclosure. And if there is no conflict, the embodiments in the application and the features in the embodiments can be combined with each other.

Unless otherwise defined, the technical terms or scientific terms used in the present disclosure shall have the usual meanings understood by those with ordinary skills in the field to which this disclosure belongs. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity, or importance, but are only used to distinguish different components. "Include" or "include" and other similar words mean that the elements or items appearing before the word cover the elements or items listed after the word and their equivalents, but do not exclude other elements or items. Similar words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "Down", "Left", "Right", etc. are only used to indicate the relative position relationship. When the absolute position of the described object changes, the relative position relationship may also change accordingly.

The shapes and sizes of the components in the drawings do not reflect the true proportions, and are only intended to illustrate the present disclosure.

Specifically, an embodiment of the present disclosure provides a spirit level, as shown in FIG. 1 and FIG. 2, including: a measuring body 1, a data acquisition and processing circuit (not shown in the figure), and an output circuit 2;

The measuring body 1 includes: an inclination angle measuring structure 11, the inclination angle measuring structure 11 includes a receiving cavity 111 and a movable gravity ball 112 located in the receiving cavity 111;

The accommodating cavity 111 includes two surfaces (left surface a1, right surface a2) disposed oppositely in the first direction, and two surfaces (upper surface a3, lower surface a4) disposed oppositely in the second direction. Two surfaces (front surface a5, rear surface a6) arranged opposite to each other, wherein the first direction, the second direction and the third direction are all perpendicular to each other;

The accommodating cavity 111 is configured such that the two surfaces (left surface a1, right surface a2) arranged oppositely in the first direction of the gravity ball 112 and the two surfaces (upper surface a3, lower surface a4) arranged oppositely in the second direction ) Slide upward, and prevent the gravity ball 112 from contacting two opposite surfaces (front surface a5, rear surface a6) in the third direction;

The two surfaces (left surface a1, right surface a2) arranged opposite in the first direction and the two surfaces (upper surface a3, lower surface a4) arranged opposite to each other in the second direction are each provided with a pressure sensor 113, the pressure sensor 113 is configured to detect the pressure on each surface when the gravity ball 112 generates pressure to act on the corresponding surface, convert it into an electrical signal and transmit it to the data acquisition and processing circuit;

The data acquisition and processing circuit is configured to determine the tilt angle of the object to be measured according to the acquired electrical signal, and transmit the tilt angle data to the output circuit 2;

The output circuit 2 is configured to receive data on the tilt angle and output it.

Specifically, in the spirit level provided by the embodiment of the present disclosure, by designing the structure of the accommodating cavity, the gravity ball slides on the two oppositely arranged surfaces in the first direction and the two oppositely arranged surfaces in the second direction, In addition, the gravity ball is not in contact with two oppositely arranged surfaces in the third direction to ensure that the pressure of the gravity ball only acts on the two surfaces when tilting at any angle, which is extremely effective compared to contacting multiple surfaces at the same time. The amount of calculation is greatly reduced, and the two opposite surfaces in the first direction and the two opposite surfaces in the second direction of the accommodating cavity are equipped with pressure sensors. When the gravity ball exerts pressure on the corresponding surfaces, Detecting the pressure on each surface is converted into electrical signals and transmitted to the data acquisition processing circuit; after calculation and data conversion, the data acquisition processing circuit provides the processing results to the output circuit for display to the measurer as a basis for adjustment. Compared with the level in the related art, the level provided by the embodiment of the present disclosure can be applied to the measurement of a wider angle range, is not affected by the external environment temperature, and is easy to carry.

Wherein, the measurement body not only includes the tilt angle measurement structure, but also includes an extension area located on at least one side of the tilt angle measurement structure, and the data collection and processing electrodes and the output circuit may be located in the extension area. Figure 1 shows that the output circuit is a display as an example. Of course, the output circuit can also be other devices, such as a voice player for voice broadcast, and the communication device provides the output structure to an external terminal for viewing, etc., which can be performed according to the actual situation. The choice is not specifically limited here.

It should be noted that the structure of the accommodating cavity is designed so that the gravity ball does not contact the front and rear surfaces of the accommodating cavity, so that during the measurement of the level, regardless of the inclination angle, the gravity ball is only in two positions. Pressure is applied on the surface. If the angle of the level tilted to the left is less than or equal to 90°, the gravity ball will contact the lower surface and the left surface. When the tilt angle to the left is greater than 90°, the gravity ball will contact the left surface and the upper surface. Surface contact, the inclination angle of the object to be measured can be obtained by calculating the pressure generated by the force-bearing surface. If the limit structure is not set, the gravity ball may come into contact with three surfaces, adding force analysis and calculation Difficulty.

Since the gravity ball is not in contact with the front and rear surfaces, there is no need to provide corresponding pressure sensors on the front and rear surfaces, and only the pressure sensors on the upper and lower surfaces and the left and right surfaces can meet the measurement requirements.

The measurement principle of the tilt angle measurement structure is shown in Figure 3. When the level is tilted to the left by angle θ (ie, tilted counterclockwise), the gravity ball 112 is subjected to gravity G, the supporting force F _{n1 of the} lower surface a2, and the supporting force of the left surface a5. F _n2 , specifically:

F _n1 =G·cosθ;

F _n2 =G·sinθ;

Among them, the support force of the lower surface received by the gravity ball and the pressure of the lower surface received by the gravity ball are interaction forces, and the support force of the left surface received by the gravity ball and the pressure of the left surface received by the gravity ball are interaction forces. Therefore, The inclination angle of the level, that is, the inclination angle of the object to be measured, can be calculated according to the above formula by obtaining the pressure values obtained by the pressure sensors corresponding to the lower surface and the left surface.

It should be noted that FIG. 3 is illustrated by taking the level meter tilted to the left as an example. When the level meter is tilted to the right, the principle is the same as that described above, and will not be repeated here.

Among them, in order to reduce the friction between the gravity ball and each surface, it can be made of a metal material with a small friction coefficient and strong thermal stability. For example, it can be made of pure copper with a surface roughness of Ra0.8. The mass does not exceed 100g. Of course, it can also be a gravity ball with other parameters, which can be selected according to actual use conditions, and is not specifically limited here.

Further, in order to make the measurement more accurate, related optimization algorithms can be introduced later to use the data of the two pressure sensors (the pressure sensor corresponding to the lower surface and the pressure sensor corresponding to the left surface), as shown in the measurement state in Figure 3. Have a more precise offset angle

for:

The operation logic of function f is:

Do:

y=f(x ₁ ,x ₂ );

If:

(x ₁ /ave(x ₁ +x ₂ )<0.01&x ₂ /ave(x ₁ +x ₂ )<0.01);

Then:

y=min(x ₁ ,x ₂ );

If else:

y=ave(x ₁ +x ₂ );

end;

Where y means

x ₁ means

x ₂ means

ave(x ₁ +x ₂ ) represents _{the average value of x 1} and x ₂ , and min(x ₁ , x ₂ ) represents the minimum value of _{x 1} and x _2.

Optionally, in the spirit level provided by the embodiment of the present disclosure, the pressure sensor may use a high-precision resistance strain gauge as a force measurement element. The resistance strain gauge carrier is preferably made of all stainless steel, and the pressure sensor has an overload protection function. The above, as shown in Figure 4 below, includes a base carrier 113a, a resistance strain gauge 113b, and a signal line 113c. On the base carrier 113a, a threaded hole 113d is reserved as the connection part of the pressure sensor and the measuring body, and the pressure sensor is connected with a nut. Fixed on the measuring body. In this embodiment, the base carrier 113a has a length A=20mm, a width B=16mm, and a height H=5mm.

Among them, the parameters of the pressure sensor can be as shown in the following table:

It should be noted that the above-mentioned pressure sensor is only a specific embodiment of the pressure sensor, and the present disclosure may also adopt any pressure sensor capable of realizing the above-mentioned measurement principle, which is specifically selected according to actual use conditions, and is not specifically limited herein.

Optionally, in the spirit level provided by the embodiment of the present disclosure, the accommodating cavity has a circular cross-section parallel to the second direction and the third direction, and the two oppositely arranged surfaces in the third direction have a cross-section along the third direction. There is a gap in the preset distance on both sides of the central axis;

The diameter of the cross section is larger than the diameter of the gravity ball, and the position of the center of the cross section does not overlap with the central axis of the measuring body in the third direction.

Specifically, in the spirit level provided by the embodiment of the present disclosure, by setting the structure of the containing cavity, the gravity ball can be in point contact with the upper and lower surfaces and the left and right surfaces in the containing cavity, and it is ensured that the gravity ball does not contact the front and rear surfaces.

Wherein, the gap in the accommodating cavity is set axisymmetrically along the central axis of the third direction in cross section. The extension of the gap in the second direction can be selected according to actual needs to ensure that the gravity ball is not in line with the third direction. The two surfaces arranged in opposite directions shall be in contact with each other, and the specific size is not specifically limited here.

It should be noted that in the spirit level provided by the embodiment of the present disclosure, the structure of the accommodating cavity is not limited to the structure of the above-mentioned embodiment, and the purpose of the accommodating cavity is to make the two surfaces of the gravity ball arranged opposite to each other in the first direction. It slides on the two surfaces opposite to the second direction, and prevents the gravity ball from contacting the two opposite surfaces in the third direction, and the accommodating cavity can also be set as an ellipsoid whose cross-section in the third direction is an ellipse The elliptical shape and the extension direction of the long axis of the ellipse are the same as the third direction. This arrangement can also prevent the gravity ball from contacting two oppositely arranged surfaces in the third direction. Therefore, the structure of the accommodating cavity provided by the embodiment of the present disclosure is not limited to the above two types, but may also be any other structure capable of realizing the function of the accommodating cavity, which can be designed according to actual needs, and is not specifically limited herein.

Optionally, in the spirit level provided by the embodiment of the present disclosure, the cross-sectional diameter may be 1 mm to 3 mm larger than the diameter of the gravity ball. That is, when the gravity ball is installed, the distance between the gravity ball and the left and right surfaces is at least 0.5 mm and at most 1.5 mm, respectively, to meet the measurement requirements.

Optionally, in the level meter provided by the embodiment of the present disclosure, the data acquisition processing circuit includes: a pressure processing sub-circuit, an arithmetic processing sub-circuit, and a digital display processing sub-circuit;

The pressure processing sub-circuit is configured to obtain electrical signals collected by pressure sensors located on each surface, and determine the pressure on each surface according to the electrical signals;

The arithmetic processing sub-circuit is configured to determine the inclination angle of the object to be measured according to the pressure on each surface and the functional relationship between the preset pressure and the inclination angle;

Specifically, in the spirit level provided by the embodiment of the present disclosure, the pressure sensor converts the pressure generated on each surface into an electric signal, and provides the electric signal to the pressure processing sub-circuit, and the pressure processing sub-circuit converts the electric signal into a digital signal , It is convenient for the calculation processing sub-circuit to perform calculations. The functional relationship and calculation process have been described in the above-mentioned embodiments, and will not be repeated here. After obtaining the calculation result of the tilt angle, the digital display processing sub-circuit converts the calculation result into data for display or other forms of data for the measurer, and then provides it to the output circuit.

Optionally, in the spirit level provided by the embodiment of the present disclosure, as shown in FIGS. 5 and 6, the spirit level further includes: in the first direction, a telescopic part 3 located at at least one end of the measuring body 1, the telescopic part 3 and the measuring The main body 1 is flexibly arranged in the first direction;

Displacement transmission circuit (not specifically shown in the figure), the displacement transmission circuit is configured to determine the expansion and contraction length (L ₁ and/or L ₂ ) of the expansion and contraction part 3 according to the expansion and contraction amount of the expansion and contraction part 3, and expand and contract The length is provided to the data acquisition and processing circuit;

The data acquisition and processing circuit is also configured to obtain the telescopic length (L ₁ and/or L ₂ ), and measure the length L and the inclination angle of the body 1 in the first direction according to the telescopic length (L ₁ and/or L ₂₎ θ, determine the height difference Δh between the two ends of the object to be measured in the first direction, and provide the height difference Δh to the output circuit;

Specifically, in the spirit level provided by the embodiment of the present disclosure, taking the measuring body with telescopic parts on both the left and right ends as an example, when the telescopic part is telescopic, the displacement transmission circuit can determine the expansion and contraction of the telescopic part according to the amount of expansion and contraction at both ends. Length, the height difference Δh between the two ends of the object to be measured in the first direction can be determined according to the predetermined length of the measuring body and the size of the inclination angle, which is specifically:

Δh=(L+L ₁ +L ₂ )·sinθ.

Among them, the displacement transmission circuit can provide the determined expansion and contraction length of the expansion and contraction part to the arithmetic processing sub-circuit, which calculates △h according to the above formula, and provides the calculation result to the digital display processing sub-circuit, the digital display processing After the sub-circuit converts it into data provided to the measurer, it is provided to the output circuit.

Specifically, in the spirit level provided by the embodiment of the present disclosure, through the arrangement of the expansion and contraction part and the displacement transmission circuit, when the expansion and contraction amount of the expansion and contraction occurs with respect to the measuring body, the displacement transmission circuit can determine the expansion and contraction length of the expansion and contraction part, thereby providing Perform calculations for the arithmetic processing sub-circuit. Compared with the level meter in the related art that needs to manually measure the length of the object to be measured, the level meter provided in the embodiments of the present disclosure can avoid the existence of human measurement errors, thereby facilitating more accurate calculation of the two ends of the object to be measured in the first direction. Height difference.

Optionally, in the spirit level provided by the embodiment of the present disclosure, as shown in FIGS. 5 and 6, in the first direction, both ends of the measuring body 1 include telescopic parts 3.

Specifically, in the spirit level provided by the embodiment of the present disclosure, the telescopic part can be telescopically driven by any one of a linear motor, a lead screw drive, an electric push rod, and a manual drive, and the telescopic parts provided at both ends can be Synchronous or asynchronous scaling is not specifically limited here.

Optionally, in the spirit level provided by the embodiment of the present disclosure, the telescopic part may also have a size scale. So that the measurer can more intuitively determine the telescopic length of the telescopic part, can find the measurement data with large errors in time, and ensure the accuracy of the measurement data.

Optionally, in the level provided by the embodiment of the present disclosure, the displacement transmitting sub-circuit may be a magnetostrictive displacement transmitter.

Specifically, in the spirit level provided by the embodiment of the present disclosure, the structure of the magnetostrictive displacement transmitter can be installed on the measuring body (length is L), and the installation position of the pickup coil of the magnetostrictive displacement transmitter is Absolute zero point, the measuring rod is concentric with the telescopic rod, and the magnetostrictive wire is installed in the measuring rod. The measuring rod is made of a stepped telescopic rod. The maximum distance is the telescopic range of the telescopic part. The magnet is installed at the end of the telescopic part. Since the position magnet changes with the telescopic rod, the magnetostriction will generate a strain mechanical wave pulse signal. Through the calculation and signal processing circuit of the magnetostrictive displacement transmitter itself, the telescopic distance L ₁ and/or L ₂ can be determined.

It should be noted that the above embodiments are described using magnetostrictive displacement transmitters as an example, but the present disclosure is not limited to adapting to magnetostrictive displacement transmitters, and can also be any other displacement changes that can realize the above-mentioned functions. The sending circuit is not specifically limited here.

Based on the same inventive concept, as shown in FIG. 7, an embodiment of the present disclosure also provides a level measuring method, which includes the following steps:

Step S701: Place the level meter on the object to be measured;

Step S702: Each pressure sensor provides the acquired electrical signal to the data acquisition and processing circuit;

Step S703: The data acquisition and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, and provides the inclination angle to the output circuit;

Step S704: The output circuit receives the data corresponding to the tilt angle and outputs it.

Optionally, in the level-side measurement method provided by the embodiment of the present disclosure, the data acquisition and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, which specifically includes:

The pressure processing sub-circuit acquires the electrical signals collected by the pressure sensors located on each surface, and determines the pressure on each surface according to the electrical signals;

The arithmetic processing sub-circuit determines the inclination angle of the object to be measured according to the pressure on each surface and the functional relationship between the preset pressure and the inclination angle;

The digital display processing sub-circuit converts the tilt angle into the corresponding data to be output.

Optionally, in the level-side measurement method provided by the embodiment of the present disclosure, the method further includes:

Adjust the telescopic part so that the end of the telescopic part away from the measuring body is at the end of the object to be measured;

The displacement transmission circuit determines the expansion and contraction length of the expansion and contraction part according to the expansion and contraction amount of the expansion and contraction part, and provides the expansion and contraction length to the data acquisition and processing circuit;

The data acquisition processing circuit obtains the telescopic length, and determines the height difference between the two ends of the object to be measured in the first direction according to the telescopic length, the length of the measuring body in the first direction and the inclination angle, and provides the height difference to the output circuit;

Among them, the specific embodiments of the level gauge measurement method provided in the embodiments of the present disclosure have been described in detail in the above-mentioned level gauge embodiments, which can be implemented with reference to the foregoing embodiments, and will not be repeated here.

The embodiments of the present disclosure provide a level meter and a measuring method thereof. The level meter includes a measurement body, a data acquisition and processing circuit, and an output circuit; the measurement body includes a tilt angle measurement structure, the tilt angle measurement structure includes a containing cavity, and The gravity ball in the accommodating cavity, the gravity ball is movably arranged in the accommodating cavity; by designing the structure of the accommodating cavity, the two surfaces of the gravitational ball are arranged opposite to each other in the first direction and the second direction It slides on the two oppositely arranged surfaces on the upper side, and prevents the gravity ball from contacting the two oppositely arranged surfaces in the third direction, ensuring that the pressure of the gravity ball only acts on the two surfaces when tilting at any angle, compared to In terms of contact with multiple surfaces at the same time, the amount of calculation can be greatly reduced, and the two opposite surfaces in the first direction and the two opposite surfaces in the second direction of the accommodating cavity are equipped with pressure sensors. When the ball exerts pressure on the corresponding surface, it detects the pressure on each surface and converts it into an electrical signal and provides it to the data acquisition processing circuit; after calculation and data conversion, the data acquisition processing circuit provides the processing result to the output circuit for display The measurer, as the basis for adjustment. Compared with the level in the related art, the level provided by the embodiment of the present disclosure can be applied to the measurement of a wider angle range, is not affected by the external environment temperature, and is easy to carry.

Obviously, those skilled in the art can make various changes and modifications to the present disclosure without departing from the spirit and scope of the present disclosure. In this way, if these modifications and variations of the present disclosure fall within the scope of the claims of the present disclosure and equivalent technologies, the present disclosure is also intended to include these modifications and variations.

Claims

A level, which includes: a measurement body, a data acquisition and processing circuit, and an output circuit;

The measurement body includes: an inclination angle measurement structure, the inclination angle measurement structure includes a accommodating cavity and a movable gravity ball located in the accommodating cavity;

The accommodating cavity includes two surfaces opposed to each other in a first direction, two opposed surfaces in a second direction, and two opposed surfaces in a third direction, wherein the first direction, the The second direction and the third direction are both perpendicular to each other;

The accommodating cavity is configured to cause the gravity ball to slide on two opposing surfaces in the first direction and two opposing surfaces in the second direction, and to prevent the gravity ball from interacting with all the surfaces. The two oppositely arranged surfaces contact in the third direction;

The two oppositely arranged surfaces in the first direction and the two oppositely arranged surfaces in the second direction are both provided with pressure sensors, and the pressure sensors are configured to generate pressure when the gravity ball acts on the corresponding When detecting the surface, the pressure on each surface is converted into an electrical signal and transmitted to the data acquisition and processing circuit;

The data acquisition and processing circuit is configured to determine the tilt angle of the object to be measured according to the acquired electrical signal, and transmit the tilt angle data to the output circuit;

The output circuit is configured to receive the data of the tilt angle and output it.
The level of claim 1, wherein the test body further comprises: in the first direction, a telescopic part located at at least one end of the measuring body, and the telescopic part and the measuring body are in the first direction. Scalable setting in one direction;

A displacement transmission circuit, the displacement transmission circuit is configured to determine the expansion and contraction length of the expansion and contraction part according to the amount of expansion and contraction of the expansion and contraction part, and provide the expansion and contraction length to the data collection and processing circuit;

The data collection and processing circuit is further configured to obtain the telescopic length, and determine that the object to be measured is in the position according to the telescopic length, the length of the measuring body in the first direction, and the inclination angle. The height difference between the two ends in the first direction, and the height difference is provided to the output circuit;

The output circuit is also configured to receive data corresponding to the height difference and output it.
The level gauge according to claim 1 or 2, wherein the data acquisition and processing circuit comprises: a pressure processing sub-circuit, an arithmetic processing sub-circuit, and a digital display processing sub-circuit;

The pressure processing sub-circuit is configured to obtain the electrical signal collected by the pressure sensor located on each surface, and determine the pressure on each surface according to the electrical signal;

The arithmetic processing sub-circuit is configured to determine the inclination angle of the object to be measured according to the pressure on each surface and the functional relationship between the pressure and the inclination angle;

The digital display processing sub-circuit is configured to transmit the tilt angle data to the output circuit.
The spirit level according to claim 1, wherein the cross section of the accommodating cavity parallel to the second direction and the third direction is circular, and the two oppositely disposed surfaces in the third direction are arranged along the cross section of the accommodating cavity. There is a gap in the preset distance on both sides of the central axis in the third direction;

The diameter of the cross section is greater than the diameter of the gravity ball, and the position of the center of the cross section does not overlap with the central axis of the measurement body in the third direction.
The level gauge according to claim 4, wherein the diameter of the cross section is 1 mm to 3 mm larger than the diameter of the gravity ball.
The level gauge of claim 2, wherein in the first direction, both ends of the measuring body include the telescopic part.
The spirit level according to claim 6, wherein the telescopic part has a size scale.
The level gauge of claim 2, wherein the displacement transmitting sub-circuit is a magnetostrictive displacement transmitter.
The spirit level according to any one of claims 1-8, wherein the output circuit comprises: a display.
A method for measuring a spirit level according to any one of claims 1-9, which comprises:

Placing the spirit level on the object to be measured;

Each of the pressure sensors provides the acquired electrical signal to the data collection and processing circuit;

The data acquisition and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, and provides the inclination angle to the output circuit;

The output circuit receives the data corresponding to the tilt angle and outputs it.
10. The method for measuring a level gauge according to claim 10, wherein the data acquisition and processing circuit determines the inclination angle of the object to be measured according to the electrical signal, which specifically includes:

The pressure processing sub-circuit acquires the electrical signal collected by the pressure sensor located on each surface, and determines the pressure on each surface according to the electrical signal;

The arithmetic processing sub-circuit determines the inclination angle of the object to be measured according to the pressure on each surface and a preset functional relationship between the pressure and the inclination angle;

The digital display processing sub-circuit converts the tilt angle into corresponding data to be output.
The measuring method of a spirit level according to claim 10, further comprising:

Adjust the telescopic part so that the end of the telescopic part away from the measuring body is located at the end of the object to be measured;

The displacement transmission circuit determines the expansion and contraction length of the expansion and contraction part according to the expansion and contraction amount of the expansion and contraction part, and provides the expansion and contraction length to the data collection and processing circuit;

The data collection and processing circuit acquires the telescopic length, and determines that the object to be measured is in the first direction based on the telescopic length, the length of the measuring body in the first direction, and the inclination angle. The height difference between the upper ends, and the height difference is provided to the output circuit;

The output circuit receives the data corresponding to the height difference and outputs it.