Plane inclination detection device

Abstract

The utility model provides a plane inclination detection device, comprising an angle sensing module used for detecting first sensing data of the angle sensing module on each coordinate axis; the control module is in communication connection with the angle sensing module and the angle display module and is used for acquiring the first sensing data on each coordinate axis and calculating the inclination angle of each coordinate axis relative to the horizontal line according to each acceleration value; the angle display module comprises four lamp strip display areas divided according to coordinate axes of a rectangular plane coordinate system, each lamp strip display area indicates an inclined direction, and each lamp strip display area is provided with a lamp strip display partition identifier and a lamp strip capable of displaying different types of light display information; the control module is used for determining a target lamp strip display area and target light display information indicating the inclination degree according to the inclination angles of the X axis and the Y axis relative to the horizontal line in the three-dimensional rectangular coordinate system; and controlling the lamp strip in the target lamp strip display area to display the target light display information.

Description

Technical Field

[0001] This utility model relates to the field of plane tilt detection, and in particular to a plane tilt detection device. Background Technology

[0002] In the measuring tool industry, instruments and electronic equipment often require checking whether mounting surfaces or plates are level and measuring the direction and angle of tilt. The industry commonly uses bubble levels for tilt detection. A bubble level is a device for measuring minute tilt angles. It consists of a liquid and an air bubble within a glass, plastic, or metal casing. The bubble's position shifts when tilting occurs, thus indicating the direction and degree of tilt.

[0003] While bubble levels are widely used in the industry, they also present some challenges. These mainly include the following aspects: temperature characteristics, visibility, lifespan, and transportation risks. Temperature characteristics: Due to the environmental limitations of the bubble, the operating temperature of a bubble level is typically only between 20℃ and 50℃. This meets the needs of general temperature applications but does not cover the operating temperature range of some high-end tools. Visibility: Bubble levels are generally small, ranging from 10 to 20 mm in size, and the internal liquid is transparent. At greater distances, users cannot clearly observe the levelness of the tool's mounting surface. Lifespan: Bubble levels are primarily composed of liquid. In actual use, accidental drops or impacts can cause leakage, rendering the bubble unusable. Transportation risks: Some bubble levels, due to the special properties of their liquid, cannot meet the safety requirements for air transport.

[0004] Therefore, developing a detection device that can detect tilt angles at all temperatures, has high visibility, is resistant to impacts and drops, and poses low transportation safety risks has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] To overcome the aforementioned technical deficiencies, this utility model provides a planar tilt detection device. It cleverly displays the tilt angle visually on an angle display module, solving the problems of environmental temperature limitations, low visualization, susceptibility to damage from impacts and drops, and high transportation safety risks associated with tilt angle detection.

[0006] This utility model discloses a plane tilt detection device, including: an angle sensing module, an angle display module, and a control module;

[0007] The angle sensing module has a built-in three-dimensional Cartesian coordinate system for detecting the first sensing data of the angle sensing module on each coordinate axis; the first sensing data indicates the tilt state on each coordinate axis.

[0008] The control module is communicatively connected to the angle sensing module and the angle display module, and is used to acquire the first sensing data on each coordinate axis and calculate the tilt angle of each coordinate axis relative to the horizontal line based on each acceleration value.

[0009] A Cartesian coordinate system is established within the angle display module; the angle display module includes:

[0010] The four light strip display areas are divided according to the coordinate axes of the Cartesian coordinate system, each indicating a tilt direction. The light strip display areas are equipped with: light strip display zone identifiers and light strips that can display different types of light display information;

[0011] The control module is used to determine the target light strip display area and the target light display information indicating the degree of tilt based on the tilt angle of the X and Y axes relative to the horizontal line in the three-dimensional rectangular coordinate system; so as to control the light strip in the target light strip display area to display the target light display information.

[0012] Optionally, the control module is used to determine the target light strip display area based on the positive and negative values ​​of the tilt angle of the X and Y axes relative to the horizontal line, and to determine the target light display information based on the magnitude of the tilt angle, so as to control the light strip of the target light strip display area to emit the target light display information to indicate the tilt direction and tilt degree.

[0013] Optionally, the control module is used to determine the target light strip display area based on the characteristics of the coordinates in the four quadrants of the Cartesian coordinate system and the positive and negative values ​​of the tilt angles of the X and Y axes relative to the horizontal line.

[0014] Optionally, the control module stores a first angle threshold range when the plane is in a horizontal state, a second angle threshold range when the plane is in a slightly tilted state, and a third angle threshold range when the plane is in a large tilted state.

[0015] The light display information includes horizontal state display information, slight tilt state display information indicating a slight tilt state, and large tilt state display information indicating a large tilt state.

[0016] The control module is used to determine the corresponding status display information based on the values ​​of the tilt angles of the X and Y axes relative to the horizontal line and the range of each threshold.

[0017] Optionally, the first angle threshold range is -1° to 1°.

[0018] Optionally, the second angle threshold range is 1° to 2°; the third angle threshold range is 2° to 5°.

[0019] Optionally, the angle sensing module is an accelerometer; the accelerometer is a triaxial accelerometer that stores its own three-dimensional Cartesian coordinate system, and the first sensing data is the acceleration on each coordinate axis.

[0020] Optionally, the control module stores angle compensation curves for the tilt angles of the X and Y axes relative to the horizontal line as a function of temperature. The control module is used to automatically correct the tilt angles at different temperatures based on the angle compensation curves.

[0021] Optionally, the light strip is an LED light; the horizontal state display information, the slight tilt state display information, and the large tilt state display information are respectively: green light, yellow light, and red light; the light strip display zone identifier is a digital zone identifier.

[0022] Compared with the prior art, the present invention has the following technical effects:

[0023] 1. The planar tilt detection device provided by this utility model cleverly displays the tilt angle visually on the angle display module. Compared with the solution of setting a bubble, it can work normally and maintain accuracy in extreme environments of high temperature or low temperature.

[0024] 2. In actual working environments, the tilt angle is corrected and accuracy compensation is achieved based on the angle compensation curve, ensuring the tilt angle detection accuracy across the entire temperature range. This expands the temperature application range for angle detection.

[0025] 3. Compared to a bubble level, the plane tilt detection device uses an angle display module, which has higher visibility. It does not need to contain liquid or fragile parts such as glass, so it is less affected by drops or impacts and has a lower risk of transportation safety. Attached Figure Description

[0026] Figure 1 A schematic diagram of a planar tilt detection device according to an embodiment of the present utility model.

[0027] Figure 2 This is a schematic diagram showing the tilt angles of each axis in a three-dimensional Cartesian coordinate system of a triaxial accelerometer in one embodiment.

[0028] Figure 3 This is a schematic diagram of the distribution of the light strip of the angle display module in a plane rectangular coordinate system according to an embodiment of the present utility model;

[0029] Figure 4 To conform to the top view of the angle display module in a specific embodiment of this utility model;

[0030] Figures 5-8The distribution of the LED strips in the angle display module is shown under different tilt angles and degrees of tilt.

[0031] Figure label:

[0032] 1-Angle sensing module;

[0033] 2-Control module;

[0034] 3-Angle display module;

[0035] 31-LED strip display area;

[0036] 311 - LED strip light;

[0037] 312 - LED strip displays zone identifiers. Detailed Implementation

[0038] The advantages of this utility model are further illustrated below with reference to the accompanying drawings and specific embodiments.

[0039] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0040] The terminology used in this disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. The singular forms “a,” “the,” and “the” as used in this disclosure and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any and all possible combinations of one or more of the associated listed items.

[0041] In the description of this utility model, it should be understood that the terms "inner" and "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0042] In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation", "connection" and "linking" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components. They can be direct connections or indirect connections through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0043] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrating this invention and has no specific meaning in itself. Therefore, "module" and "part" can be used interchangeably.

[0044] Figure 1 A schematic diagram of a planar tilt detection device according to an embodiment of the present invention is shown. Figure 1 The plane tilt detection device includes: an angle sensing module 1, an angle display module 3, and a control module 2.

[0045] The angle sensing module 1 has a built-in three-dimensional Cartesian coordinate system for detecting first sensing data on each coordinate axis; the first sensing data indicates the tilt state on each coordinate axis. In this embodiment, the angle sensing module 1 is an accelerometer; the accelerometer is a triaxial accelerometer that stores its own three-dimensional Cartesian coordinate system, and the first sensing data is the acceleration on each coordinate axis.

[0046] The control module 2 is communicatively connected to the angle sensing module 1 and the angle display module 3, and is used to acquire the first sensing data on each coordinate axis and calculate the tilt angle of each coordinate axis relative to the horizontal line based on the first sensing data.

[0047] The control module 2 is used to establish a Cartesian coordinate system within the angle display module 3; the angle display module 3 includes light strip display areas 31 divided according to the coordinate axes of the Cartesian coordinate system, each indicating a tilt direction. The light strip display areas 31 are provided with: light strip display partition markers 312 and light strips 311 capable of displaying different types of lighting information.

[0048] The control module 2 is used to determine the target light display information within the target light strip display area 31 and the target light display information indicating the degree of tilt based on the tilt angle of the X and Y axes relative to the horizontal line in the three-dimensional rectangular coordinate system; and to control the light strip 311 of the target light strip display area 31 to display the target light display information. The planar tilt detection device provided by this utility model cleverly displays the tilt angle visually on the angle display module, and can also work normally and maintain accuracy in extreme environments of high or low temperatures.

[0049] Optionally, the planar tilt detection device further includes a housing and a power module. The housing is made of plastic material to ensure that the device is less affected by drops or impacts and will not be easily damaged. The power module is connected to the angle sensing module, the control module, and the respective angle display module, providing them with power.

[0050] Figure 2 This diagram illustrates the tilt angles of each axis in a three-dimensional Cartesian coordinate system for a triaxial accelerometer. The following section combines... Figure 2 Taking a triaxial accelerometer as an example, this paper introduces the acceleration acquisition process of each axis in a three-dimensional rectangular coordinate system and the tilt angle calculation process of the control module: The triaxial accelerometer includes a triaxial accelerometer. The triaxial accelerometer acquires the acceleration of the X, Y, and Z axes respectively. When the triaxial accelerometer is performing horizontal detection on a plane, the tilt angle detected by the triaxial accelerometer is 0° when it is in a horizontal state; otherwise, when it is in a tilted state, the acceleration of each axis is obtained, and the acceleration value is 0°.

[0051] The control module acquires first sensing data for each coordinate axis and calculates the tilt angle of each axis relative to the horizontal line based on the first sensing data. The first sensing data consists of the acceleration of each axis within the coordinate system of the triaxial accelerometer. The tilt angle is calculated using inverse trigonometric functions, and the tilt angle includes three tilt angle components: θx, θy, and θz. The specific calculation process is as follows:

[0052] α1, β1, and γ1 are the radian values ​​of the X, Y, and Z axes relative to the horizontal line, respectively, and Ax, Ay, and Az are the acceleration values ​​on the three axes. α1 = arctan[Ax / squr(Ay×Ay+Az×Az); β1 = arctan[Ay / squr(Ax×Ax+Az×Az); γ1 = arctan[Az / squr(Ax×Ax+Ay×Ay).

[0053] Based on the radian values ​​α1, β1 and γ 1， Calculate the tilt angles: θx, θy, and θz: The formula for calculating the tilt angle θx is: θx=α1×180 / π={arctan[Ax / squr(Ay×Ay+Az×Az)]}×180 / π; The formula for calculating the tilt angle θy is: θy=β1×180 / π=arctan[Ay / squr(Ax×Ax+Az×Az)]}×180 / π; The formula for calculating the tilt angle θz is: θz=γ1×180 / π=arctan[Az / squr(Ax×Ax+Ay×Ay)]}×180 / π.

[0054] The tilt angles θx and θy of the X, Y, and Z axes relative to the horizontal line represent the left-right tilt of the plane of the angle sensing module and the front-back tilt of the plane of the angle sensing module.

[0055] From the formula for calculating the tilt angle θy, we know that when tilting forward, the Y-axis component Ay increases, and gravity is more distributed in the positive Y-axis direction; when tilting backward, the Y-axis component Ay decreases to a negative value, and gravity is more distributed in the negative Y-axis direction. From the formula for calculating the tilt angle θx, we know that when tilting to the left, the X-axis component Ax decreases to a negative value, and gravity is more distributed in the negative X-axis direction; when tilting to the right, the X-axis component Ax increases, and gravity is more distributed in the positive X-axis direction. Therefore, at least the following tilt situations exist: θx, θy: tilting to the right front; -θx, -θy: tilting to the left rear; -θx, θy: tilting to the left front; θx, -θy: tilting to the right rear.

[0056] Figure 3 A schematic diagram showing the distribution of light strips in a plane rectangular coordinate system for an angle display module conforming to an embodiment of this utility model is provided. Solid circles represent illuminated light strips, and hollow circles represent non-illuminated light strips.

[0057] See Figure 3 In a further embodiment of this utility model, the angle display module includes: the light strip display area, divided according to the coordinate axes of the Cartesian coordinate system, is equipped with a light strip display partition identifier to indicate four light strip display areas. It also includes light strips capable of displaying different types of light display information. The light display information includes horizontal state display information, slight tilt state display information indicating a slight tilt state, and large tilt state display information indicating a large tilt state. In this embodiment, the light strip is an LED light, which can be set to different shapes and sizes as needed. The horizontal state display information, slight tilt state display information, and large tilt state display information are respectively: green light, yellow light, and red light; the light strip display partition identifier is a digital area identifier. The Cartesian coordinate system established within the angle display module is a software simulation operation of the control module. The angle display module does not need to set a coordinate system; based on the right partition identifier of the display area divided by the coordinate system, the user can determine the tilt direction based on the light strip display area. The specific judgment process is described below and will not be repeated here. In a specific example, such as... Figure 4As shown, the LED strip display area, divided according to the coordinate axes of the Cartesian coordinate system, has eight LED strip display zone identifiers, represented by +1, -1, +2, -2, +3, -3, +4, and -4. The numbers represent quadrants, with the same number indicating the same quadrant. 1, 2, 3, and 4 represent quadrants one through four, respectively. The positive and negative signs indicate the tilt angle of the Z-axis. The dashed lines mark the boundaries of the eight sector areas. Both the numerical identifiers and the eight sector areas indicate the tilt direction. In this embodiment, each zone is separated by 45°. The three concentric circles refer to ring or circular LED strips of three different colors at different tilt angles, used to display different colors. The sector is determined based on the calculated tilt direction (including the positive and negative values ​​of the tilt angle of the Z-axis for the eight areas). Then, the control module controls and illuminates the LEDs in the corresponding sector area to indicate the degree of tilt. Figure 4 This design features eight zones (indicating eight tilt directions). The control module can simultaneously indicate four directions by controlling the lights in two zones with the same number to illuminate. For example, ignoring the tilt along the Z-axis and considering only the X and Y-axis tilts, if the tilt angles along the X and Y axes are both positive, the module will simultaneously control the lights in zones +1 and -1 to illuminate the corresponding color strips. Other light strip designs can also be used, and this invention does not impose any limitations on them.

[0058] Of course, depending on the specific product requirements, the four directions can be further subdivided into eight or other intervals.

[0059] In a further embodiment, the control module is used to determine the target light strip display area based on the positive and negative values ​​of the tilt angles of the X and Y axes relative to the horizontal line, and to determine the target light display information based on the magnitude of the tilt angle, so as to control the light strips in the target light strip display area to emit the target light display information to indicate the tilt direction and tilt degree.

[0060] In an optional configuration, the control module is used to determine the target light strip display area based on the characteristics of the coordinates in the four quadrants of the Cartesian coordinate system and the positive and negative values ​​of the tilt angles of the X and Y axes relative to the horizontal line. Specifically, in the Cartesian coordinate system, the coordinate symbols of the first, second, third, and fourth quadrants are (+, +), (-, +), (-, -), and (+, -), respectively, corresponding to the tilt states: (θx, θy) (tilted to the right front), (-θx, θy) (tilted to the left front), (-θx, -θy) (tilted to the left rear), and (θx, -θy) (tilted to the right rear). Each quadrant corresponds to region 1, region 2, region 3, and region 4, respectively. The user can determine the quadrant corresponding to the region based on the numerical region identifier, thereby obtaining the actual tilt direction.

[0061] In an optional embodiment, the control module stores a first angle threshold range for the plane being horizontal, a second angle threshold range for the plane being slightly tilted, and a third angle threshold range for the plane being significantly tilted. The control module is used to determine the corresponding status display information based on the values ​​of the tilt angles of the X and Y axes relative to the horizontal line and each threshold range. If the control module determines that the tilt angle value is within the first angle threshold range, it controls the target light strip to display horizontal status information, such as emitting red light; when there is a small angle of tilt in a certain direction, it controls the LED light in that direction to display yellow; when there is a large angle of tilt in a certain direction, the LED light in that direction displays red, and so on. Further, the first angle threshold range is selected as -1° to 1°; the second angle threshold range is selected as 1° to 2°; and the third angle threshold range is selected as 2° to 5°. Each status display information and threshold range can be set or changed according to actual needs through the control module's software.

[0062] Figures 5-8 The distribution of the LED strips in the angle display module is shown under several different tilt angles and degrees of tilt.

[0063] like Figure 5 As shown, when -1° < θx < 1° and -1° < θy < 1°, the first angle threshold range is within -1° to 1°. Therefore, the control module controls the light strips in all four directions to display green.

[0064] like Figure 6 As shown, when θx = 2° and θy = 2°, both are within the second angle threshold range of 1° to 2°. Therefore, the yellow light emitted by the light strip in the first quadrant is determined based on the sign of the tilt angle.

[0065] like Figure 7 As shown, when θx = 0° and θy = 2°, θy is within the second angle threshold range. Therefore, based on the tilt angle, the sign is determined to be the first and second quadrants, so the light strips in both quadrants are controlled to emit yellow light.

[0066] like Figure 8 As shown, when θx = -6° and θy = 6°, both exceed the range of the third angle threshold: 2° to 5°. Based on the sign of the tilt angle, it is determined to be in the second quadrant. Therefore, the second quadrant light strip is controlled to emit red light.

[0067] The coordinate systems in the above examples are for ease of judgment. In actual use, users should use the coordinate systems provided. Figure 4 The numbers 1, 2, 3, and 4 are used to distinguish the first, second, third, and fourth quadrants.

[0068] In a further embodiment of this invention, the control module stores angle compensation curves for the tilt angles of the X and Y axes relative to the horizontal line as a function of temperature. The control module is used to automatically correct the tilt angles at different temperatures based on these angle compensation curves. The process of obtaining the angle compensation curves is as follows: the triaxial accelerometer is pre-calibrated for temperature. Communication with a host computer is established at different temperatures to simulate working conditions under different temperature environments. A tilting stage is used to apply a specified tilt angle. The host computer then commands the triaxial accelerometer to detect and record the tilt angle data from the control module. The current temperature is obtained through a temperature sensor. The control module calculates the tilt angle at different temperatures and compares it with the standard angle of the actual tilting stage to obtain the corresponding difference (temperature compensation data). An angle compensation curve is fitted and stored. Several typical application temperatures for the product are typically defined. In the actual working environment, the triaxial accelerometer corrects and compensates for the tilt angle based on the temperature compensation data, ensuring accuracy across the entire temperature range.

[0069] The planar tilt detection device provided by this utility model cleverly displays the tilt angle visually on the angle display module. It can operate normally and maintain accuracy in extreme environments of high or low temperatures, while achieving high visibility, impact and drop protection, and low transportation safety risks. Furthermore, in actual working environments, the tilt angle is corrected according to the angle compensation curve to achieve accuracy compensation, ensuring tilt angle detection accuracy across the entire temperature range. This expands the temperature application range of angle detection.

[0070] It should be noted that the embodiments of this utility model have better implementability and are not intended to limit this utility model in any way. Any person skilled in the art may use the above-disclosed technical content to change or modify it into equivalent effective embodiments. However, any modifications or equivalent changes and modifications made to the above embodiments based on the technical essence of this utility model without departing from the content of the technical solution of this utility model shall still fall within the scope of the technical solution of this utility model.

Claims

1. A planar tilt detection device, characterized in that, include: Angle sensing module, angle display module, and control module; The angle sensing module has a built-in three-dimensional Cartesian coordinate system for detecting the first sensing data of the angle sensing module on each coordinate axis; the first sensing data indicates the tilt state on each coordinate axis. The control module is communicatively connected to the angle sensing module and the angle display module, and is used to acquire the first sensing data on each coordinate axis and calculate the tilt angle of each coordinate axis relative to the horizontal line based on the first sensing data. A Cartesian coordinate system is established within the angle display module; The angle display module includes: The light strip display area is divided according to the coordinate axes of the Cartesian coordinate system, each indicating a tilt direction. The light strip display area is equipped with: light strip display zone identifiers and light strips capable of displaying different types of light display information; The control module is used to determine the target light strip display area and the target light display information indicating the degree of tilt based on the tilt angle of the X and Y axes relative to the horizontal line in the three-dimensional rectangular coordinate system; so as to control the light strip in the target light strip display area to display the target light display information.

2. The plane tilt detection device as described in claim 1, characterized in that, The control module is used to determine the target light strip display area based on the positive and negative values ​​of the tilt angle of the X and Y axes relative to the horizontal line, and to determine the target light display information based on the magnitude of the tilt angle, so as to control the light strip of the target light strip display area to emit the target light display information to indicate the tilt direction and tilt degree.

3. The plane tilt detection device as described in claim 2, characterized in that, The control module is used to determine the target light strip display area based on the characteristics of the coordinates in the four quadrants of the Cartesian coordinate system and the positive and negative values ​​of the tilt angles of the X and Y axes relative to the horizontal line.

4. The plane tilt detection device as described in claim 3, characterized in that, The control module stores a first angle threshold range when the plane is in a horizontal state, a second angle threshold range when the plane is in a slightly tilted state, and a third angle threshold range when the plane is in a tilted state. The light display information includes horizontal state display information, slight tilt state display information indicating a slight tilt state, and tilt state display information indicating a tilt state. The control module is used to determine the corresponding status display information based on the values ​​of the tilt angles of the X and Y axes relative to the horizontal line and the range of each threshold.

5. The plane tilt detection device as described in claim 4, characterized in that, The first angle threshold range is -1° to 1°.

6. The plane tilt detection device as described in claim 4, characterized in that, The second angle threshold range is 1°~2°; the third angle threshold range is 2°~5°.

7. The plane tilt detection device as described in claim 1, characterized in that, The angle sensing module is an accelerometer; the accelerometer is a triaxial accelerometer that stores its own three-dimensional Cartesian coordinate system, and the first sensing data is the acceleration on each coordinate axis.

8. The plane tilt detection device as described in claim 1, characterized in that, The control module stores angle compensation curves for the tilt angles of the X and Y axes relative to the horizontal line as a function of temperature. The control module is used to automatically correct the tilt angles at different temperatures based on these angle compensation curves.

9. The plane tilt detection device as described in claim 4, characterized in that, The light strip is an LED light; The horizontal state display information, the slight tilt state display information, and the tilt state display information are respectively: green light, yellow light, and red light; the light strip display zone identifier is a digital zone identifier.

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