Detection device for house building

Abstract

The invention relates to the technical field of angle measurement, in particular to a house building detection device which comprises laser range finders, measuring rods, a main laser probe, an auxiliary laser probe, a main scale plate and an auxiliary scale plate, each measuring rod corresponds to three target laser range finders, each laser range finder corresponds to a distance from a wall and a height, and the main scale plate and the auxiliary scale plate are arranged on the measuring rods. And obtaining an optimal laser reference function, obtaining an adjustment coefficient of the laser probe corresponding to each measuring rod by combining with a wall distance and height corresponding to each target laser range finder, and obtaining an inclination angle of the wall surface by combining with scale values corresponding to the main and auxiliary measuring rods and a height difference between the main and auxiliary laser probes. The measurement accuracy of the inclination angle of the wall body is improved.

Description

Technical Field

[0001] The invention relates to the technical field of angle measurement, and in particular to a detection device for building construction. Background Art

[0002] Tilt detection of building walls is an important part of ensuring the safety and structural integrity of buildings. The tilt of walls may be a precursor to the instability of the building structure, such as uneven foundation settlement, structural aging or design defects. If not discovered and repaired in time, it may lead to more serious structural problems and even the risk of building collapse. Therefore, tilt detection can prevent potential safety hazards, thereby avoiding greater losses and maintaining the structural stability and usability of the building.

[0003] Existing problem: At present, when measuring the inclination of the wall of a building by a wall inclination detection device, the measuring rod of the detection device based on laser ranging cannot accurately align with the standard plane of the wall due to the local unevenness of the wall surface, which causes the position of the laser probe to shift, resulting in errors in the measurement of the wall's inclination angle. Summary of the invention

[0004] The invention provides a detection device for building construction to solve the existing problems.

[0005] A detection device for building construction of the present invention adopts the following technical solution: A detection device for building construction, comprising a laser rangefinder, a measuring rod, a primary and secondary laser probes, and a primary and secondary scale plates; the measuring rod comprises a primary and secondary measuring rod; the laser rangefinder comprises two reference laser rangefinders and six target laser rangefinders; wherein each measuring rod corresponds to three target laser rangefinders, and each reference laser rangefinder corresponds to a distance and height from the wall at different measuring positions on the wall; After the tips of the main and auxiliary measuring rods are against the wall, the scale value of the main laser probe corresponding to the main measuring rod on the auxiliary scale plate is obtained as the scale value corresponding to the main measuring rod, the scale value of the auxiliary laser probe corresponding to the auxiliary measuring rod on the main scale plate is obtained as the scale value corresponding to the auxiliary measuring rod, and the height difference between the main and auxiliary laser probes and the distance and height from the wall corresponding to each target laser rangefinder are obtained; At each measurement position on the wall, the coordinates formed by the distance and height from the wall corresponding to each reference laser rangefinder are used to construct the straight line equation corresponding to each measurement position, and the optimal laser reference function is selected from the straight line equation; According to the optimal laser reference function and the distance and height from the wall corresponding to each target laser rangefinder, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained; The inclination angle of the wall is obtained according to the adjustment coefficient of the laser probe corresponding to each measuring rod, the scale values ​​corresponding to the main and auxiliary measuring rods, and the height difference between the main and auxiliary laser probes.

[0006] Furthermore, the optimal laser reference function specifically includes: According to the distance from the wall corresponding to each reference laser rangefinder and the slope of the straight line equation corresponding to each measurement position, the optimal degree of the straight line equation corresponding to each measurement position is obtained; The optimal laser reference function is obtained according to the optimality of the straight line equation corresponding to each measurement position.

[0007] Furthermore, the optimality of the straight line equation corresponding to each measurement position specifically includes: Calculate the average of the distances from the wall corresponding to the mth reference laser rangefinder at all measurement positions as the first average; The absolute value of the difference between the distance from the wall corresponding to the mth reference laser rangefinder at the xth measurement position and the first mean value is taken as the distance difference of the mth reference laser rangefinder at the xth measurement position; The normalized value of the mean of the distance differences of all reference laser rangefinders at the x-th measurement position is recorded as the second mean; Calculate the absolute value of the difference between the slopes of the straight line equations corresponding to the x-th measurement position and each of the other measurement positions, and record the average of the absolute values ​​of the differences between the slopes of the straight line equations corresponding to the x-th measurement position and all the other measurement positions as the third average; The reciprocal of the product of the second mean and the third mean is recorded as the optimal degree of the straight line equation corresponding to the x-th measurement position.

[0008] Furthermore, the step of obtaining the optimal laser reference function according to the optimality of the linear equation corresponding to each measurement position specifically includes: Among the optimal degrees of the straight line equations corresponding to all measurement positions, the straight line equation corresponding to the greatest optimal degree is recorded as the optimal laser reference function.

[0009] Furthermore, the adjustment coefficient of the laser probe corresponding to each measuring rod specifically includes: Input the height corresponding to each target laser rangefinder into the optimal laser reference function, and output the standard distance of each target laser rangefinder; According to the standard distance of each target laser rangefinder corresponding to each measuring rod and the distance from the wall, the concave-convex direction coefficient of the position where each measuring rod touches the wall surface is obtained; The coordinates of each target laser rangefinder are formed by the distance from the wall and the height thereof. According to the coordinates of any two adjacent target laser rangefinders corresponding to the i-th measuring rod, the slope of the coordinates of any two adjacent target laser rangefinders corresponding to the i-th measuring rod is obtained by using the two-point slope formula. According to the concave-convex direction coefficient of the wall position where each measuring rod abuts and the slope of the coordinates of any two adjacent target laser rangefinders, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained.

[0010] Furthermore, the concave-convex direction coefficient of the position where each measuring rod contacts the wall surface specifically includes: Calculate the difference between the standard distance of the nth target laser rangefinder corresponding to the ith measuring rod and the distance from the wall as the first difference of the nth target laser rangefinder corresponding to the ith measuring rod; The average of the first differences of all target laser rangefinders corresponding to the i-th measuring rod is recorded as the concave-convex direction coefficient of the position where the i-th measuring rod touches the wall.

[0011] Furthermore, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained according to the concave-convex direction coefficient of the position of each measuring rod against the wall and the slope of the coordinates of any two corresponding adjacent target laser rangefinders, which specifically includes: The absolute value of the difference between the slopes of the coordinates of two adjacent target laser rangefinders corresponding to the i-th measuring rod is recorded as the second difference; The normalized value of the product of the second difference and the concave-convex direction coefficient of the position where the i-th measuring rod touches the wall is recorded as the adjustment coefficient of the laser probe corresponding to the i-th measuring rod.

[0012] Furthermore, the inclination angle of the wall specifically includes: According to the adjustment coefficient of the laser probe corresponding to each measuring rod and the scale values ​​corresponding to the main and auxiliary measuring rods, the updated scale value corresponding to each measuring rod is obtained; The inclination angle of the wall is obtained according to the updated scale value corresponding to each measuring rod and the height difference between the main and auxiliary laser probes.

[0013] Furthermore, the updated scale value corresponding to each measuring rod specifically includes: The sum of the adjustment coefficient of the laser probe corresponding to the i-th measuring rod and 1 is calculated, and the product of the sum and the scale value corresponding to the i-th measuring rod is recorded as the updated scale value corresponding to the i-th measuring rod.

[0014] Furthermore, the step of obtaining the inclination angle of the wall according to the updated scale value corresponding to each measuring rod and the height difference between the primary and secondary laser probes specifically includes: The absolute value of the difference between the updated scale values ​​corresponding to the two measuring rods is taken as the lateral displacement difference between the main and auxiliary laser probes; The ratio of the lateral displacement difference between the main and auxiliary laser probes to the height difference between the main and auxiliary laser probes is calculated, and the inverse tangent function is used to obtain the angle corresponding to the ratio as the inclination angle of the wall.

[0015] The beneficial effects of the technical solution of the present invention are: it optimizes the problem of errors in the measurement of the inclination angle caused by the inability of the measuring rod of the detection device based on laser ranging to accurately align with the standard plane of the wall due to the local unevenness of the wall surface, and determines the optimal laser reference function of the wall surface by analyzing the distance between the height adjustment rod and the wall surface at different heights, and then compares the difference between the corresponding length from the wall when the two measuring rods are aligned with the wall surface and the standard length to determine the adjustment coefficient of the corresponding laser probe, and then compensates and adjusts the positions of the laser probes of the two measuring rods, so that the inclination angle of the wall surface can be accurately measured according to the scale lines corresponding to the laser probes, thereby improving the measurement accuracy of the wall inclination angle and ensuring the structural stability and usability of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a structural schematic diagram of a detection device for building construction of the present invention; Figure 2 A schematic diagram of a process for detecting the inclination of a building wall according to the present invention; Figure 3 It is a schematic diagram of the main and auxiliary laser probes projected on the main and auxiliary scale plates to reflect the inclination angle of the wall in the present invention; Figure 1 The middle numbers are: 1 is the height adjustment rod, 2 is the limiter, 3 is the main scale plate, 4 is the main measuring rod, 5 is the upper laser rangefinder, 6 is the first main laser rangefinder, 7 is the second main laser rangefinder, 8 is the propulsion plate, 9 is the main laser probe, 10 is the third main laser rangefinder, 11 is the auxiliary measuring rod, 12 is the auxiliary scale plate, 13 is the auxiliary laser probe, 14 is the first auxiliary laser rangefinder, 15 is the second auxiliary laser rangefinder, 16 is the lower laser rangefinder, 17 is the balance board, 18 is the level, 19 is the level adjustment screw, 20 is the base, 21 is the height adjustment control panel, 22 is the laser probe slide, and 23 is the third auxiliary laser rangefinder. DETAILED DESCRIPTION

[0018] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the following is a detailed description of the specific implementation, structure, features and effects of a detection device for building construction proposed by the present invention in combination with the accompanying drawings and preferred embodiments. In the following description, different "one embodiment" or "another embodiment" does not necessarily refer to the same embodiment. In addition, specific features, structures or characteristics in one or more embodiments may be combined in any suitable form.

[0019] Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs.

[0020] The specific scheme of the detection device for building construction provided by the present invention is described in detail below with reference to the accompanying drawings.

[0021] See also Figure 1 , which shows a schematic structural diagram of a detection device for building construction provided by an embodiment of the present invention, the device includes: 1 is a height adjustment rod, 2 is a limiter, 3 is a main scale plate, 4 is a main measuring rod, 5 is an upper laser rangefinder, 6 is a first main laser rangefinder, 7 is a second main laser rangefinder, 8 is a propulsion plate, 9 is a main laser probe, 10 is a third main laser rangefinder, 11 is a secondary measuring rod, 12 is a secondary scale plate, 13 is a secondary laser probe, 14 is a first secondary laser rangefinder, 15 is a second secondary laser rangefinder, 16 is a lower laser rangefinder, 17 is a balance board, 18 is a level, 19 is a horizontal adjustment screw, 20 is a base, 21 is a height adjustment control panel, 22 is a laser probe slide, and 23 is a third secondary laser rangefinder.

[0022] The device is mainly used to measure the inclination angle of a wall. The specific operation is as follows: first, the device is pushed to the vicinity of the wall to be measured through the base 20, and the balance plate 17 is horizontally controlled by the level meter 18 to control the horizontal adjustment screw 19, and then the tip of the auxiliary measuring rod 11 is pressed against the wall. At this time, the height adjustment control panel 21 is used to raise or lower the height adjustment rod 1 to the corresponding height, and then a thrust or a pull is applied to the push plate 8 to make the tip of the main measuring rod 4 press against the wall. The main measuring rod 4 is fixed by the stopper 2 so that it does not move. At this time, the main laser probe 9 and the auxiliary laser probe 13 are turned on, and the inclination angle is calculated by the corresponding scale values ​​of the laser probe on the main scale plate 3 and the auxiliary scale plate 12. The scale values ​​of the main scale plate 3 and the auxiliary scale plate 12 change in the same direction from small to large, that is, toward the tip of the measuring rod.

[0023] It should be noted that: the upper laser rangefinder 5, the lower laser rangefinder 16, the first main laser rangefinder 6, the second main laser rangefinder 7, the third main laser rangefinder 10, the first auxiliary laser rangefinder 14, the second auxiliary laser rangefinder 15 and the third auxiliary laser rangefinder 23 are collectively referred to as laser rangefinders; the upper laser rangefinder 5 and the lower laser rangefinder 16 are collectively referred to as reference laser rangefinders; the main measuring rod 4 and the auxiliary measuring rod 11 are collectively referred to as measuring rods; the first main laser rangefinder 6, the second main laser rangefinder 7 and the third main laser rangefinder 10 are collectively referred to as main measuring rods. The target laser rangefinder of the measuring rod 4; the first auxiliary laser rangefinder 14, the second auxiliary laser rangefinder 15 and the third auxiliary laser rangefinder 23 are used as the target laser rangefinders of the auxiliary measuring rod 11; after the tip of the main measuring rod 4 is against the wall, the scale value of the main laser probe 9 corresponding to the main measuring rod 4 on the auxiliary scale plate 12 is used as the scale value corresponding to the main measuring rod; after the tip of the auxiliary measuring rod 11 is against the wall, the scale value of the auxiliary laser probe 13 corresponding to the auxiliary measuring rod 11 on the main scale plate 3 is used as the scale value corresponding to the auxiliary measuring rod.

[0024] Since the wall surface where the auxiliary measuring rod 11 and the main measuring rod 4 are in contact may be partially uneven, the scale lines marked by the main laser probe 9 and the auxiliary laser probe 13 cannot accurately reflect the inclination angle of the wall surface. Therefore, in this embodiment, laser probe slide grooves 22 are installed at the two laser probes so that the laser probes can move left and right, thereby analyzing the unevenness of the wall surface and compensating and adjusting the positions of the two laser probes to improve the measurement accuracy of the wall inclination angle.

[0025] See also Figure 2 , which shows a flow chart of a building wall tilt detection process provided by an embodiment of the present invention, comprising the following steps: Step S001: At each measurement position on the wall, the coordinates formed by the distance and height from the wall corresponding to each reference laser rangefinder are used to construct a straight line equation corresponding to each measurement position, and the optimal laser reference function is selected from the straight line equation.

[0026] Due to the local unevenness of the wall, in order to more accurately measure the inclination angle of the wall through this device, the two measuring rods of the device are placed against the wall and fixed, and then the uneven direction coefficient of the wall at the corresponding height of the measuring rod is analyzed to determine the adjustment coefficient, and the positions of the two laser probes are compensated and adjusted by the adjustment coefficient. If the uneven direction coefficient of the wall is to be analyzed, it is necessary to use a laser rangefinder to obtain the height adjustment rod and the distance between the two measuring rods and the wall at different heights. Therefore, in the process of measuring the inclination angle, this embodiment uses all laser rangefinders to obtain the distance data from the wall at the corresponding height, so as to analyze the uneven direction coefficient of the wall and compensate the positions of the two laser probes.

[0027] Therefore, it is necessary to first calculate the concave-convex direction coefficient of the wall at the corresponding heights of the main and auxiliary measuring rods. Since the concave-convex direction coefficient at the corresponding height of the wall can measure the telescopic error of the measuring rod relative to the flat wall, and the telescopic error will affect the measurement of the wall inclination angle, it is necessary to determine the adjustment coefficient of the laser probe corresponding to the measuring rod according to the concave-convex direction coefficient, and finally compensate and adjust the position of the laser probe.

[0028] Preferably, the method for obtaining the optimal laser reference function of the wall surface by determining the variation characteristics of the distance data of different laser rangefinders on the height adjustment rod includes: Since the measured wall surface may have different degrees of concavity and convexity, in order to determine the optimal wall inclination angle, it is necessary to first calculate the optimal laser reference function corresponding to the wall surface.

[0029] For the wall, the wall should be straight. Since the wall is generally tilted as a whole, the corresponding tilt angles at different positions of the wall are similar. Therefore, the device is first translated on the ground in a direction parallel to the wall to obtain the distance and height from the wall (i.e., the height and distance from the wall of the laser rangefinder) collected by the upper laser rangefinder and the lower laser rangefinder of the device at different measuring positions. The height adjustment rod is fixed during the movement.

[0030] It should be noted that: in this embodiment, 30 measurement positions are set, and the measurement positions are equally spaced, and this is taken as an example for description.

[0031] At the same measurement position, the coordinates are formed by the distance from the wall and the height corresponding to each reference laser rangefinder, and the straight line equation corresponding to each measurement position is constructed using the two-point straight line equation.

[0032] Among them, the two-point straight line equation is a well-known technology.

[0033] Calculate the mean of the distances from the wall corresponding to the mth reference laser rangefinder at all measurement positions as the first mean, take the absolute value of the difference between the distance from the wall corresponding to the mth reference laser rangefinder at the xth measurement position and the first mean as the distance difference of the mth reference laser rangefinder at the xth measurement position, record the normalized value of the mean of the distance differences of all reference laser rangefinders at the xth measurement position as the second mean, calculate the absolute value of the difference in the slopes in the straight line equation corresponding to the xth measurement position and each other measurement position, record the mean of the absolute values ​​of the difference in the slopes in the straight line equations corresponding to the xth measurement position and all other measurement positions as the third mean, and record the reciprocal of the product of the second mean and the third mean as the optimality of the straight line equation corresponding to the xth measurement position.

[0034] It should be noted that: for relatively flat wall positions, the distances from the wall collected by the laser rangefinder are similar, but the degree of concavity in different concave and convex areas is irregular, resulting in large differences in the distances from the wall. Therefore, the distances from the wall corresponding to the same reference laser rangefinder at all measurement positions on the relatively flat wall should be similar, and the slopes of the straight line equations should be similar. Therefore, the calculation formula for the optimal degree of the straight line equation corresponding to each measurement position is: ; In the formula represents the optimality of the linear equation corresponding to the xth measurement position, where X is the number of measurement positions. is the distance from the wall corresponding to the mth reference laser rangefinder at the xth measurement position, is the mean value (first mean value) of the distance from the wall corresponding to the mth reference laser rangefinder at all measurement positions, and are the slopes of the straight line equations corresponding to the x-th and y-th measurement positions, is the absolute value function, It is a linear normalization function used to normalize data values ​​to between 0 and 1. (Second mean) and The smaller the (third mean), the higher the wall flatness at the x-th measurement position, and the more credible the corresponding straight line equation.

[0035] Among the optimal degrees of the straight line equations corresponding to all measurement positions, the straight line equation corresponding to the greatest optimal degree is recorded as the optimal laser reference function.

[0036] It should be noted that if there are multiple maximum optimal degrees, one is selected as an example for analysis. The optimal laser reference function is the linear equation of the relatively flat part of the wall in all measurement positions. Since the measurement positions are randomly selected manually, these areas may look relatively flat when selected, but the flatness observed by the naked eye may still have slight bumps. Therefore, the optimal laser reference function will still be affected by certain wall bumps, but the impact is relatively small. Therefore, in this embodiment, the optimal laser reference function is used as a reference function for comparing and calculating the actual wall inclination angle, and further combined with the data collected by the target laser rangefinder of the device to ensure the accuracy of the wall inclination angle calculation, thereby ensuring the accuracy of the final result through optimization.

[0037] Step S002: According to the optimal laser reference function and the distance and height from the wall corresponding to each target laser rangefinder, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained.

[0038] At any position on the wall, after the tips of the main and auxiliary measuring rods of the device are pressed against the wall, the scale value of the main laser probe corresponding to the main measuring rod on the auxiliary scale plate is obtained as the scale value corresponding to the main measuring rod, the scale value of the auxiliary laser probe corresponding to the auxiliary measuring rod on the main scale plate is obtained as the scale value corresponding to the auxiliary measuring rod, the height difference between the main and auxiliary laser probes and the distance and height from the wall corresponding to each target laser rangefinder are obtained.

[0039] Therefore, taking the standard distance generated by the optimal laser reference function as the reference value, the difference analysis is performed on the distance between the actual measuring rod height and the wall, so as to determine the wall concave and convex direction coefficients corresponding to the two measuring rod positions, and then the adjustment coefficient of the corresponding measuring rod is calculated based on the slope difference of the actual distance between the measuring rod and the wall at different heights.

[0040] Since the optimal laser reference function of this wall reflects the ideal situation when the wall is relatively flat, in order to measure whether the measuring rod of the device reaches the uneven wall position, it is necessary to determine the degree of incorrect extension and contraction of the measuring rod caused by the uneven wall, that is, the uneven direction coefficient.

[0041] Preferably, the method for obtaining the adjustment coefficient of the laser probe corresponding to each measuring rod includes: The height of each target laser rangefinder corresponding to each measuring rod is input into the optimal laser reference function, and the standard distance of each target laser rangefinder corresponding to each measuring rod is output. The difference between the standard distance of the nth target laser rangefinder corresponding to the ith measuring rod and the distance from the wall is calculated as the first difference of the nth target laser rangefinder corresponding to the ith measuring rod. The average of the first differences of all target laser rangefinders corresponding to the ith measuring rod is recorded as the concave-convex direction coefficient of the wall position where the ith measuring rod is against.

[0042] It should be noted that the calculation formula of the concave-convex direction coefficient of the position where the i-th measuring rod touches the wall is: ; In the formula, is the concave-convex direction coefficient of the position of the i-th measuring rod against the wall, is the number of target laser rangefinders corresponding to the i-th measuring rod, is the standard distance of the nth target laser rangefinder corresponding to the ith measuring rod, is the distance from the wall of the nth target laser rangefinder corresponding to the ith measuring rod, It is the first difference value of the nth target laser rangefinder corresponding to the i-th measuring rod. If it is positive and the larger it is, it means that the actual measured distance from the wall does not reach the standard distance, that is, the wall position where the measuring rod touches is convex, and the corresponding concave-convex direction coefficient value is larger. On the contrary, if it is negative and the smaller it is, it means that the actual measured distance from the wall exceeds the standard distance, that is, the wall position where the measuring rod touches is concave, and the corresponding concave-convex direction coefficient value is smaller.

[0043] According to the above method, the convex-concave direction coefficient value of the wall position where the two measuring rods of the device are against is obtained. Since the convex-concave direction coefficient is generated in the local wall, if the local wall where a measuring rod happens to be against has convex-concave, it will cause the offset of the laser probe to produce an error, thereby affecting the measurement accuracy of the wall inclination angle. Therefore, it is necessary to compensate and adjust the laser probe corresponding to the measuring rod based on the above-mentioned wall convex-concave direction coefficient to reduce this error.

[0044] Since the concave-convex direction coefficient of the wall is correlated with the expansion and contraction of the main measuring rod, and the expansion and contraction of the main measuring rod determines the error offset of the laser probe, it is necessary to compensate and adjust the laser probe, and the concave-convex direction coefficient of the wall at the corresponding position needs to be calculated during the adjustment. The change trend of the distance from the wall corresponding to the three sensors corresponding to each measuring rod of this device can reflect the degree of concave-convex, so the adjustment coefficient corresponding to the measuring rod is calculated based on the above two points.

[0045] The coordinates are formed by the distance and height from the wall corresponding to each target laser rangefinder. According to the coordinates of any two adjacent target laser rangefinders corresponding to the ith measuring rod, the two-point slope formula is used to obtain the slope of the coordinates of any two adjacent target laser rangefinders corresponding to the ith measuring rod. The absolute value of the difference between the slopes of the coordinates of two groups of adjacent target laser rangefinders corresponding to the ith measuring rod is recorded as the second difference. The normalized value of the product of the second difference and the concave-convex direction coefficient of the wall position where the ith measuring rod is against is recorded as the adjustment coefficient of the laser probe corresponding to the ith measuring rod.

[0046] It should be noted that the two-point slope formula is a known technology. In the device, the first main laser rangefinder corresponding to the main measuring rod is adjacent to the third main laser rangefinder, the third main laser rangefinder is adjacent to the second main laser rangefinder, the first auxiliary laser rangefinder corresponding to the auxiliary measuring rod is adjacent to the third auxiliary laser rangefinder, and the third auxiliary laser rangefinder is adjacent to the second auxiliary laser rangefinder. The calculation formula of the adjustment coefficient of the laser probe corresponding to the i-th measuring rod is: ; In the formula, is the adjustment coefficient of the laser probe corresponding to the i-th measuring rod, is the concave-convex direction coefficient of the position of the i-th measuring rod against the wall, is the absolute value function, It is the hyperbolic tangent function, which is used to normalize the data values ​​to between -1 and 1. and as well as They are the coordinates consisting of the distance from the wall and the height corresponding to the three laser probes corresponding to the i-th measuring rod. and They represent the slopes of the coordinates of two groups of adjacent target laser rangefinders corresponding to the i-th measuring rod. is the second difference, which reflects the difference in slopes between the corresponding positions of the two adjacent laser rangefinders. If the wall corresponding to the measuring rod is uneven, then there will be a certain difference in the slope, and the greater the degree of unevenness, the greater the slope difference; if the wall is straight, the three points are more likely to be collinear, and the slope difference is smaller. The larger the value, the greater the degree of concavity and convexity of the wall at this location, and the larger the adjustment coefficient. It represents the concave and convex direction of the wall at this position. If the wall is convex, The larger the value, the positive and larger the corresponding adjustment coefficient. On the contrary, if the wall is concave, The smaller it is, the corresponding adjustment coefficient is negative and smaller.

[0047] According to the above method, the adjustment coefficients corresponding to the laser probes of the two measuring rods of the device are obtained, and then the main and auxiliary laser probes can be compensated and adjusted according to the adjustment coefficients.

[0048] Step S003: Obtain the inclination angle of the wall according to the adjustment coefficient of the laser probe corresponding to each measuring rod, the scale values ​​corresponding to the main and auxiliary measuring rods, and the height difference between the main and auxiliary laser probes.

[0049] The device described in this embodiment has two measuring rods, and when measuring the inclination angle of the wall, the two measuring rods will be against the wall. The parts of the wall corresponding to the two measuring rods may be uneven. Any uneven wall will lead to inaccurate inclination angle measurement. Therefore, it is necessary to compensate and adjust the laser probes of the two measuring rods during adjustment.

[0050] Since a larger positive adjustment coefficient corresponds to a more protruding wall, a protruding wall will cause the measuring rod to be unable to reach the position of the standard wall, resulting in insufficient offset of the laser probe of the measuring rod. Therefore, the laser probe needs to be adjusted toward the wall during adjustment. Conversely, a smaller negative adjustment coefficient corresponds to a more concave wall, and a concave wall will cause the measuring rod to exceed the position of the standard wall, resulting in excessive offset of the laser probe of the measuring rod. Therefore, the laser probe needs to be adjusted in the opposite direction of the wall.

[0051] Preferably, the method for obtaining the inclination angle of the wall includes: Calculate the sum of the adjustment coefficient of the laser probe corresponding to the i-th measuring rod and 1, and record the product of the sum and the scale value corresponding to the i-th measuring rod as the updated scale value corresponding to the i-th measuring rod.

[0052] It should be noted that in this embodiment, the direction of the device toward the wall is the positive direction. The larger the adjustment coefficient, the more the corresponding laser probe is adjusted in the positive direction (i.e., the direction of increasing scale), that is, the laser probe moves a corresponding distance in the positive direction through the slide slot, and the smaller the adjustment coefficient, the more the corresponding laser probe is adjusted in the opposite direction (i.e., the direction of decreasing scale), that is, the laser probe moves a corresponding distance in the opposite direction through the slide slot. In this way, the compensation adjustment is completed for the two measuring rods of the device. At this time, the positions of the two laser probes can accurately reflect the inclination angle of the wall. Then, the inclination angle of the wall can be calculated by the relative position difference of the two laser probes. The schematic diagram of the main and auxiliary laser probes reflected the inclination angle of the wall on the main and auxiliary scale plates is shown as follows. Figure 3 shown. Figure 3 Where L is the lateral displacement difference between the main and auxiliary laser probes, and H is the height difference between the main and auxiliary laser probes.

[0053] The absolute value of the difference between the updated scale values ​​corresponding to the two measuring rods is used as the lateral displacement difference between the main and auxiliary laser probes. The ratio of the lateral displacement difference between the main and auxiliary laser probes to the height difference between the main and auxiliary laser probes is calculated. The inverse tangent function is used to obtain the angle corresponding to the ratio as the inclination angle of the wall.

[0054] It should be noted that the calculation formula for the inclination angle of the wall is: ; In the formula, is the inclination angle of the wall, L is the lateral displacement difference between the main and auxiliary laser probes, and H is the height difference between the main and auxiliary laser probes. is the inverse tangent function. In this embodiment, when the denominator in the formula is 0, the denominator is set to 1 to ensure that the formula is valid, and this example is used for description.

[0055] So far, the present invention is completed.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A detection device for building construction, characterized in that: The building construction detection device comprises a laser rangefinder, a measuring rod, a primary and secondary laser probes, and a primary and secondary scale plates; the measuring rod comprises a primary and secondary measuring rod; the laser rangefinder comprises two reference laser rangefinders and six target laser rangefinders; wherein each measuring rod corresponds to three target laser rangefinders, and each reference laser rangefinder corresponds to a distance and height from the wall at different measuring positions on the wall; After the tips of the main and auxiliary measuring rods are against the wall, the scale value of the main laser probe corresponding to the main measuring rod on the auxiliary scale plate is obtained as the scale value corresponding to the main measuring rod, the scale value of the auxiliary laser probe corresponding to the auxiliary measuring rod on the main scale plate is obtained as the scale value corresponding to the auxiliary measuring rod, and the height difference between the main and auxiliary laser probes and the distance and height from the wall corresponding to each target laser rangefinder are obtained; At each measurement position on the wall, the coordinates formed by the distance and height from the wall corresponding to each reference laser rangefinder are used to construct the straight line equation corresponding to each measurement position, and the optimal laser reference function is selected from the straight line equation; According to the optimal laser reference function and the distance and height from the wall corresponding to each target laser rangefinder, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained; The inclination angle of the wall is obtained according to the adjustment coefficient of the laser probe corresponding to each measuring rod, the scale values ​​corresponding to the main and auxiliary measuring rods, and the height difference between the main and auxiliary laser probes.

2. A detection device for building construction according to claim 1, characterized in that: The optimal laser reference function specifically includes: According to the distance from the wall corresponding to each reference laser rangefinder and the slope of the straight line equation corresponding to each measurement position, the optimal degree of the straight line equation corresponding to each measurement position is obtained; The optimal laser reference function is obtained according to the optimality of the straight line equation corresponding to each measurement position.

3. A building construction detection device according to claim 2, characterized in that: The optimality of the straight line equation corresponding to each measurement position specifically includes: Calculate the average of the distances from the wall corresponding to the mth reference laser rangefinder at all measurement positions as the first average; The absolute value of the difference between the distance from the wall corresponding to the mth reference laser rangefinder at the xth measurement position and the first mean value is taken as the distance difference of the mth reference laser rangefinder at the xth measurement position; The normalized value of the mean of the distance differences of all reference laser rangefinders at the x-th measurement position is recorded as the second mean; Calculate the absolute value of the difference between the slopes of the straight line equations corresponding to the x-th measurement position and each of the other measurement positions, and record the average of the absolute values ​​of the differences between the slopes of the straight line equations corresponding to the x-th measurement position and all the other measurement positions as the third average; The reciprocal of the product of the second mean and the third mean is recorded as the optimal degree of the straight line equation corresponding to the x-th measurement position.

4. A building construction detection device according to claim 2, characterized in that: The step of obtaining the optimal laser reference function according to the optimal degree of the linear equation corresponding to each measurement position specifically includes: Among the optimal degrees of the straight line equations corresponding to all measurement positions, the straight line equation corresponding to the greatest optimal degree is recorded as the optimal laser reference function.

5. A detection device for building construction according to claim 1, characterized in that: The adjustment coefficient of the laser probe corresponding to each measuring rod specifically includes: Input the height corresponding to each target laser rangefinder into the optimal laser reference function, and output the standard distance of each target laser rangefinder; According to the standard distance of each target laser rangefinder corresponding to each measuring rod and the distance from the wall, the concave-convex direction coefficient of the position where each measuring rod touches the wall surface is obtained; The coordinates of each target laser rangefinder are formed by the distance from the wall and the height thereof. According to the coordinates of any two adjacent target laser rangefinders corresponding to the i-th measuring rod, the slope of the coordinates of any two adjacent target laser rangefinders corresponding to the i-th measuring rod is obtained by using the two-point slope formula. According to the concave-convex direction coefficient of the wall position where each measuring rod abuts and the slope of the coordinates of any two adjacent target laser rangefinders, the adjustment coefficient of the laser probe corresponding to each measuring rod is obtained.

6. A building construction detection device according to claim 5, characterized in that: The concave-convex direction coefficient of the wall position where each measuring rod touches specifically includes: Calculate the difference between the standard distance of the nth target laser rangefinder corresponding to the i-th measuring rod and the distance from the wall as the first difference of the nth target laser rangefinder corresponding to the i-th measuring rod; The average of the first differences of all target laser rangefinders corresponding to the i-th measuring rod is recorded as the concave-convex direction coefficient of the position where the i-th measuring rod touches the wall.

7. A building construction detection device according to claim 5, characterized in that: The adjustment coefficient of the laser probe corresponding to each measuring rod is obtained according to the concave-convex direction coefficient of the wall position where each measuring rod is against and the slope of the coordinates of any two adjacent target laser rangefinders, specifically including: The absolute value of the difference between the slopes of the coordinates of two adjacent target laser rangefinders corresponding to the i-th measuring rod is recorded as the second difference; The normalized value of the product of the second difference and the concave-convex direction coefficient of the position where the i-th measuring rod touches the wall is recorded as the adjustment coefficient of the laser probe corresponding to the i-th measuring rod.

8. A building construction detection device according to claim 1, characterized in that: The inclination angle of the wall specifically includes: According to the adjustment coefficient of the laser probe corresponding to each measuring rod and the scale values ​​corresponding to the main and auxiliary measuring rods, the updated scale value corresponding to each measuring rod is obtained; The inclination angle of the wall is obtained according to the updated scale value corresponding to each measuring rod and the height difference between the main and auxiliary laser probes.

9. A detection device for building construction according to claim 8, characterized in that: The updated scale value corresponding to each measuring rod specifically includes: The sum of the adjustment coefficient of the laser probe corresponding to the i-th measuring rod and 1 is calculated, and the product of the sum and the scale value corresponding to the i-th measuring rod is recorded as the updated scale value corresponding to the i-th measuring rod.

10. A building construction detection device according to claim 8, characterized in that: The step of obtaining the inclination angle of the wall according to the updated scale value corresponding to each measuring rod and the height difference between the main and auxiliary laser probes specifically includes: The absolute value of the difference between the updated scale values ​​corresponding to the two measuring rods is taken as the lateral displacement difference between the main and auxiliary laser probes; The ratio of the lateral displacement difference between the main and auxiliary laser probes to the height difference between the main and auxiliary laser probes is calculated, and the inverse tangent function is used to obtain the angle corresponding to the ratio as the inclination angle of the wall.

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