A depth finding implementation for a bottom discharge vibrator apparatus

Abstract

The application relates to a depth measuring implementation method for a bottom discharge vibrator device, which adopts a depth measuring device to measure the depth, generates a horizontal laser line when laser light emitted by a laser light source hits the side of a stock bin of the bottom discharge vibrator device, detects the horizontal laser line through a horizontal laser line position detection strip to obtain a light line position h, sets the light line position h corresponding to a zero point of pile depth as an initial value h0 when the bottom discharge vibrator device is well positioned and the depth is 0 m, and when the bottom discharge vibrator device measures the depth, the corresponding value of the detected light line position h is h1, and the pile depth V=h0-h1. The application is realized based on the directional performance of the laser light source and the position detection of the horizontal grating strip, and in the detection process, even if abnormal phenomena such as slipping of the steel wire rope, swinging of the crane mast and complete relaxation of the hook occur, the depth measuring result will not be affected, the measurement error is small, and the accuracy is high. In addition, the measurement efficiency is high, and the operation is simple and convenient.

Description

Technical Field

[0001] This invention relates to the field of vibratory compactor technology, specifically a method for depth measurement in a bottom-discharge vibratory compactor device. Background Technology

[0002] In the field of vibratory compaction construction, for vibratory compactors with bottom discharge, the current method of depth measurement is to use an encoder to check the extension length of the crane wire rope to indirectly calculate the descent depth of the equipment.

[0003] However, this method has a drawback: it cannot eliminate errors caused by wire rope slippage, crane mast swaying, and complete hook slack. Additionally, it requires the installation of measuring devices on various crane equipment, increasing preparation time and equipment modification processes.

[0004] Based on this, the present invention is proposed. Summary of the Invention

[0005] This invention addresses the shortcomings of existing technologies by providing a method for depth measurement in bottom-discharge vibratory compactor equipment. The technical solution is as follows:

[0006] A method for depth measurement in a bottom discharge vibratory impactor device, comprising a laser light source fixed to the ground, a horizontal laser line position detection strip fixed to the side of the hopper of the bottom discharge vibratory impactor device, a laser light source adjustment module for adjusting the position of the laser light source, and a data update module.

[0007] When a laser light source emits a laser line at a fixed angle and hits the side of the hopper of the bottom discharge vibratory impactor, it produces a horizontal laser line.

[0008] The horizontal laser line is detected by the horizontal laser line position detection strip to obtain the position h of the light beam;

[0009] When the bottom discharge vibratory compactor is aligned with the pile point and the depth is 0m, the light position h corresponding to the zero pile depth point is set to the initial value h0.

[0010] When the bottom discharge vibratory compactor is measuring the depth, the detected light position h corresponds to the value h1, and the pile depth V = h0 - h1;

[0011] When the position of the horizontal laser line exceeds the detection range of the horizontal laser line position detection bar, the position of the horizontal laser line is adjusted by triggering the laser source adjustment module, so that the position of the horizontal laser line emitted by the laser source falls back into the detection range of the horizontal laser line position detection bar; at the same time, the data update module corrects the data corresponding to the pile depth V.

[0012] As a further aspect of the present invention, the method for adjusting the position of the horizontal laser line includes the following steps:

[0013] The horizontal laser line position detection strip is divided into five areas from top to bottom according to its height direction: upper-upper area, upper area, middle area, lower area, and lower-lower area.

[0014] When the horizontal laser line enters the upper-upper zone, the laser source adjustment module is triggered, and the laser source moves downward, moving the horizontal laser line downward by a fixed distance to the upper boundary of the lower zone.

[0015] When the horizontal laser line enters the lower zone, the laser source adjustment module is triggered, moving the horizontal laser line upward by a fixed distance to the lower boundary of the upper zone.

[0016] As a further aspect of the present invention, the method for adjusting the position of the horizontal laser line includes the following steps:

[0017] The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device.

[0018] The horizontal laser line position detection bar on the bottom discharge vibratory impactor detects the bright and dark intervals of the horizontal grating strip, which are then processed and converted into a bright and dark sequence.

[0019] During the construction of the bottom discharge vibratory compactor, the detected light and dark sequence changes. The pile depth V can be obtained by multiplying the sum of the width and spacing of the horizontal grating strips by the number of changes in the light and dark sequence.

[0020] As a further aspect of the present invention, the method for adjusting the position of the horizontal laser line includes the following steps:

[0021] The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device.

[0022] Multiple horizontal grating strips form a grating. Two horizontal laser line position detection strips are set up, and the corresponding gratings are set up as two staggered arrays to detect brightness and darkness respectively.

[0023] During the construction of the bottom discharge vibratory compactor equipment, the pile depth V can be obtained by detecting the changes in brightness of the staggered array, multiplying the sum of the width and spacing of the horizontal grating strips by the number of changes in brightness of the staggered array.

[0024] As a further aspect of the present invention, a grating is formed by multiple horizontal grating strips, and the spacing between the gratings is unequal from top to bottom;

[0025] The spacing of the gratings is set to gradually increase from top to bottom.

[0026] or,

[0027] A non-repeating coding sequence is formed by using horizontal grating strips of different widths and the spacing between the gratings.

[0028] As a further aspect of the present invention, the method for adjusting the position of the horizontal laser line includes the following steps:

[0029] The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device.

[0030] Multiple horizontal grating strips constitute a grating. The horizontal grating strips at different positions and their widths constitute a sequence. The sequence is composed of multiple number columns, each consisting of n elements, where n is an integer greater than 3. No two number columns in the sequence are repeated. The elements in the number columns are generated randomly, pseudo-randomly, or as decimals of irrational numbers.

[0031] Output the pile depth V based on the sequence.

[0032] As a further aspect of the present invention, the method for adjusting the position of the horizontal laser line includes the following steps:

[0033] The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device.

[0034] Multiple horizontal grating strips constitute a grating, which is arranged in two columns of gratings of different colors, and two laser light sources are provided;

[0035] The variations in the width of the horizontal grating strips are combined into a unique sequence. The horizontal grating strips of the two columns of gratings correspond to two laser sources. The two detected sequences are then combined to form a data pair.

[0036] The output pile depth V is determined based on the data.

[0037] As a further embodiment of the present invention, the middle zone accounts for 80% of the total volume of the horizontal laser line position detection strip, the upper zone accounts for 15% of the total volume of the horizontal laser line position detection strip, the lower zone accounts for 15% of the total volume of the horizontal laser line position detection strip, the upper upper zone accounts for 5% of the total volume of the horizontal laser line position detection strip, and the lower lower zone accounts for 5% of the total volume of the horizontal laser line position detection strip.

[0038] As a further aspect of the present invention, the method for switching the position of the horizontal laser line is as follows:

[0039] Two laser sources are set up; turning off the first laser source simultaneously turns on the other laser source.

[0040] or,

[0041] The position of a horizontal laser line can be changed by adjusting the optical path using a laser source.

[0042] or,

[0043] This is achieved by mechanically rotating the laser source to adjust the laser beam angle.

[0044] As a further aspect of the present invention, the horizontal laser line position detection strip is composed of a series of photosensitive dots arranged from top to bottom.

[0045] Compared with the prior art, the beneficial effects of the present invention are:

[0046] This invention is based on the directional performance of the laser light source and the position detection of the horizontal grating strip. During the detection process, even abnormalities such as wire rope slippage, crane mast swaying, and complete hook slack will not affect the depth measurement results, resulting in small measurement errors and high accuracy. Furthermore, it boasts high measurement efficiency and is simple and convenient to operate. Attached Figure Description

[0047] Figure 1 This is a schematic diagram of the laser light source detecting the bottom discharge vibratory impactor at a depth of 0m;

[0048] Figure 2 This is a schematic diagram of the detection of the bottom discharge vibratory impactor when the value of the light position h is h1.

[0049] Figure 3 This is a schematic diagram of the structure of the horizontal laser line position detection strip;

[0050] Figure 4 This is a schematic diagram of horizontal grating stripes;

[0051] Figure 5 This is a schematic diagram of the horizontal grating stripes in Example 1;

[0052] Figure 6 This is a schematic diagram of the far-field projection of the 10-line array laser multi-line beam splitter in Example 7. Detailed Implementation

[0053] The present invention will be described in detail below with reference to specific embodiments. These embodiments are merely some, not all, implementations of the present invention. All other implementations obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0054] Example 1

[0055] The depth measurement method of the present invention is based on the directional performance of the laser light source and the position detection of the horizontal grating strip.

[0056] The depth measuring device consists of a laser light source (a) fixed to the ground and a horizontal laser line position detection strip (b) fixed to the side of the hopper of the bottom discharge vibratory impactor. Figure 1 As shown.

[0057] A laser source a (such as a laser level) emits a laser line at a fixed angle that hits the side of the hopper of the bottom discharge vibratory impactor; when the laser line hits the side of the hopper of the bottom discharge vibratory impactor, a horizontal laser line is generated.

[0058] The position h of the light beam is determined by detecting the position of the horizontal laser line by the horizontal laser line position detection strip b.

[0059] When the bottom discharge vibratory compactor is aligned with the pile point and the depth is 0m, the operator issues a zeroing command; at this time, the depth is zeroed, and the light position h corresponding to the zero point of the pile depth is set to the initial value h0.

[0060] As the bottom discharge vibratory compactor creates the hole and the depth increases, the detected light position h continuously decreases, eventually becoming h1; the pile depth V = h0 - h1, as... Figure 2 As shown;

[0061] When the bottom discharge vibratory compactor reaches a certain depth, the horizontal laser line will reach the upper edge of the horizontal laser line position detection strip b, exceeding the detection range. At this point, the laser source adjustment module is triggered, lowering laser source a by a fixed distance so that the position of the horizontal laser line emitted by laser source a falls back within the detection range of the horizontal laser line position detection strip b. Simultaneously, the data update module corrects the data corresponding to the pile depth V to ensure the detected pile depth V remains accurate.

[0062] Example 2

[0063] There are several ways to adjust the position of a horizontal laser line.

[0064] Option 1 is as follows:

[0065] The horizontal laser line position detection strip b is divided into five regions from top to bottom according to its height direction: upper-upper region, upper region, middle region, lower region, and lower-lower region. Figure 3 As shown.

[0066] The middle zone has the largest area, accounting for 80% of the total volume of the horizontal laser line position detection strip b; the upper and lower zones are used as adjustment buffer zones, accounting for a smaller proportion, such as 15% of the total volume of the horizontal laser line position detection strip b; the upper-upper zone and the lower-lower zone are used as boundary judgment zones, with the smallest area, accounting for 5% of the total volume of the horizontal laser line position detection strip b.

[0067] When the horizontal laser line enters the upper-upper zone, the laser source adjustment module is triggered, and the laser source a moves downward, moving the horizontal laser line downward by a fixed distance to the upper boundary of the lower zone.

[0068] When the horizontal laser line enters the lower zone, the laser source adjustment module is triggered, moving the horizontal laser line upward by a fixed distance to the lower boundary of the upper zone.

[0069] The switching of the horizontal laser line position can be achieved by turning off laser source a and turning on another laser source a, or by using a laser source a to quickly adjust the optical path to change the position of the horizontal laser line, or by mechanically rotating the laser line emission angle (the angle between the laser line and the horizontal plane) of the laser source a.

[0070] The advantage of this scheme is that, as long as at least one horizontal grating strip is present on the horizontal laser line position detection strip b throughout the entire construction process, regardless of the location of the silo, it only requires that the laser source a emit a few fixed horizontal grating strips (the spacing between the horizontal grating strips does not need to be exactly equal). Therefore, the requirements for the laser source a and the horizontal laser line position detection strip b are relatively low; it only needs to detect the horizontal grating strips and determine the distance between two horizontal grating strips. This makes it relatively economical and practical. The disadvantage is that because the interval between the horizontal grating strips is relatively large, the height of the horizontal laser line position detection strip b needs to be relatively large.

[0071] Example 3

[0072] The second option is as follows:

[0073] The laser line emitted by laser source a is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory shock device along the height range of the device.

[0074] The horizontal laser line position detection strip b on the bottom discharge vibratory impactor detects the bright and dark intervals of the horizontal grating strip, which are then processed and converted into a bright and dark sequence.

[0075] During the construction of the bottom discharge vibratory compactor, the detected light and dark sequence changes as the equipment moves up and down. The distance the bottom discharge vibratory compactor moves, i.e., the pile depth V, can be obtained by multiplying the sum of the width and spacing of the horizontal grating strips by the number of changes in the light and dark sequence.

[0076] For example: In pile construction with a drilling depth of 10m, the bottom discharge vibratory compactor is 12m high, and a 2m horizontal grating strip is installed on top of the vibratory compactor. Laser source a is 20m away from the pile location. The laser line emitted by laser source a is split by a beam splitter to form a horizontally distributed grating strip along the vertical direction, such as... Figure 4 The horizontal grating strips shown are 5cm wide and spaced 5cm apart, with 120 strips distributed within a 12m range. As the drilling depth increases, the horizontal laser line position detection strip b moves downward with the bottom discharge vibratory impactor, sequentially passing through each horizontal grating strip. When it has passed through 100 horizontal grating strips, it indicates a descent of (5+5)×100cm=10m, and the pile depth V=10m.

[0077] The direction in which the horizontal laser line sweeps across the horizontal grating strip is easy to determine.

[0078] One implementation method is as follows: the horizontal laser line position detection strip b consists of a series of photosensitive dots arranged from top to bottom. The direction of movement of the horizontal grating strip is determined as follows: when one of the photosensitive dots detects a signal change from bright to dark, if its upper neighboring photosensitive dot was bright before the change, and its lower neighboring photosensitive dot was dark, it indicates that the grating strip has moved upwards. Conversely, if its lower neighboring photosensitive dot was bright before the change, and its upper neighboring photosensitive dot was dark, it indicates that the horizontal grating strip has moved downwards.

[0079] Another method is to use the covariance analysis method in statistical mathematics to analyze the values ​​of the photosensitive point array before and after the change, and directly obtain the direction and distance of movement.

[0080] The advantage of this scheme is that the horizontal grating strips in the grating are equally spaced, and the movement distance of the horizontal laser line position detection strip b can be calculated simply by counting the light and dark textures. Furthermore, detection and counting can be performed at different positions to reduce the error rate. Also, because the horizontal grating strips in the grating are dense, the height of the horizontal laser line position detection strip b does not need to be very large.

[0081] Example 4

[0082] The third option is as follows:

[0083] The second scheme is simplified by setting two horizontal laser line position detection strips (b), and correspondingly setting two staggered arrays of gratings to detect brightness and darkness respectively. As long as the horizontal grating strips are sufficiently fine (large enough in number), the pile depth V can be obtained by counting the number of brightness and darkness changes.

[0084] In other words, during the construction of the bottom discharge vibratory compactor equipment, the pile depth V can be obtained by detecting the changes in brightness of the staggered array, multiplying the sum of the width and spacing of the horizontal grating strips by the number of changes in brightness of the staggered array.

[0085] This solution uses two horizontal laser lines for position detection, b, which can correct errors and improve resolution.

[0086] Example 5

[0087] The fourth option is as follows:

[0088] Based on the second scheme, the grating (composed of multiple horizontal grating strips) pattern is modified. The spacing between the gratings (the distance between two adjacent horizontal grating strips) is unequal from top to bottom; for example, the spacing gradually widens, with the width of the lower horizontal grating strip being twice the width of the adjacent upper horizontal grating strip. Thus, by detecting the width of one horizontal grating strip, its number can be deduced, allowing direct calculation of its height position h1. Alternatively, a non-repeating encoding sequence is formed by using horizontal grating strips of various widths and grating spacing. By detecting this encoding sequence, the position of the horizontal grating strip within the entire grating can be determined, thus identifying its height position h1, and consequently, the pile depth V.

[0089] Since different sequences correspond to different pile depths V, the pile depth V can be output based on the sequence.

[0090] Example 1: Figure 5 As shown, some combinations are formed with a spacing of 1 or 2 cm and a horizontal grating strip width of 1 to 5 cm. If the spacing width above each horizontal grating strip forms a pair with the width of the horizontal grating strip, the combination sequence in the figure is: (1,1), (1,2), (1,3), (1,4), (1,5), (2,1), (2,2), (2,3), (2,4), (2,5).

[0091] Example 2: Disregarding whether it's horizontal grating stripes or grating spacing, only consider the width of the horizontal grating stripes. For example, the sequence consists of multiple sequences, each consisting of 5 elements. For instance, the first 5-element sequence is (1, 1, 1, 2, 1), and the second 5-element sequence shifted one position is (1, 1, 2, 1, 3). As long as no two sequences in the sequence repeat, each position has a unique code distinguishing it from the others, thus its position can be determined from the sequence. Elements within such sequences can be generated randomly, using pseudo-random numbers, or as decimals of irrational numbers.

[0092] For example, the first 100 digits of the value of pi: 3.1415926535897932384626433832795028841971693993751058209749445923078164062862089986280348253421170679;

[0094] The following sequence is formed. Arrange and compare these sequences according to their numerical values ​​to determine that there are no duplicates:

[0095] 31415,14159,41592,15926,59265,92653,26535,65358,53589,35897,58979,89793,97932,79323,93238,32384,23846,38462,84626,46264,62643,26433,64338,43383,3 3832,38327,83279,32795,27950,79502,95028,50288,02884,28841,88419,84197,41971,19716,97169,71693,16939,69399,93993,39937,99375,93751,37510,75105,510 58,10582,05820,58209,82097,20974,09749,97494,74944,49445,94459,44592,45923,59230,92307,23078,30781,07816,78164,81640,16406,64062,40628,06286,6286 2,28620,86208,62089,20899,08998,89986,99862,98628,86280,62803,28034,80348,03482,34825,48253,82534,25342,53421,34211,42117,21170,11706,17067,70679.

[0096] The first 99 digits of the square root of 2: 141421356237309504880168872420969807856967187537694807317667973799073247846210703885038753432764157;

[0098] The following sequence was formed. Arranged and compared according to numerical value to determine that there are no duplicates: 14142,41421,14213,42135,21356,13562,35623,56237,62373,23730,37309,73095,30950,09504,95048,50488,04880,48801,88016,80168,0 1688,16887,68872,88724,87242,72420,24209,42096,20969,09698,96980,69807,98078,80785,07856,78569,85696,56967,69671,96718,67187,71875,18753,87537,75376,5 3769,37694,76948,69480,94807,48073,80731,07317,73176,31766,17667,76679,66797,67973,79737,97379,73799,37990,79907,99073,90732,07324,73247,32478,24784, 47846,78462,84621,46210,62107,21070,10703,07038,70388,03885,38850,88503,85038,50387,03875,38753,87534,75343,53432,34327,43276,32764,27641,76415,64157.

[0099] The first 101 bits of the natural constant e: 27182818284590452353602874713526624977572470936999595749669676277240766303535475945713821785251664274;

[0101] The following sequence was formed. Arranged and compared according to numerical value to determine that there are no duplicates: 27182,71828,18281,82818,28182,81828,18284,82845,28459,84590,45904,59045,90452,04523,45235,52353,23536,35360,53602,36028,6028 7,02874,28747,87471,74713,47135,71352,13526,35266,52662,26624,66249,62497,24977,49775,97757,77572,75724,57247,72470,24709,47093,70936,09369,93699,36999,6 9995,99959,99595,95957,59574,95749,57496,74966,49669,96696,66967,69676,96762,67627,76277,62772,27724,77240,72407,24076,40766,07663,76630,66303,63035,303 53,03535,35354,53547,35475,54759,47594,75945,59457,94571,45713,57138,71382,13821,38217,82178,21785,17852,78525,85251,52516,25166,51664,16642,66427,64274.

[0102] This solution has absolute value detection capability, while solutions 1-3 are relative values. If a power outage and restart occur during construction, solutions 1-3 may lose the baseline, resulting in significant detection errors; this solution can directly obtain the current detection value by reading the sequence without checking the historical data.

[0103] Example 6

[0104] The fifth option is as follows:

[0105] Based on the second scheme, two gratings of different colors (or two gratings with different modulations) are used.

[0106] Variations in the width of the horizontal grating strips are combined into combinations of different widths to construct combination sequences, such as (1, 2) and (2, 3). These combination sequences are unique, with each of the two horizontal grating strips corresponding to a different laser source a. By combining two detected combination sequences, a unique data pair is formed. These pairs uniquely determine the current position; that is, because different data pairs correspond to different pile depths V, the pile depth V can be output based on the data pair.

[0107] The horizontal laser line position detection strip b can be made by continuously splicing and integrating photodiode array devices along the vertical direction. Alternatively, it can be made by arranging independent photosensitive elements, such as photodiodes, on the board surface. It can also be arranged using optical fibers. The number and density of these elements determine the resolution of the horizontal laser line position detection strip b.

[0108] For bottom discharge vibratory impactors that have a tendency to rotate, multiple horizontal laser line position detection strips b can be arranged on different sides of the bottom discharge vibratory impactor.

[0109] Laser light source modulation can be achieved by using an electrical signal of a certain frequency to modulate the brightness of the light source, or by rotating a polarizing lens to modulate the brightness of the emitted light.

[0110] This scheme is an upgraded version of the fourth scheme. It uniquely identifies the position by combining two sequences to form a longer ordered array. It has higher resolution, a larger identification range, and stronger error correction capabilities.

[0111] Example 7

[0112] Application examples:

[0113] Figure 1 The bottom-discharge vibratory compactor has a guide rod height of 25m, a hopper height of 5m, a total height H = 30m, and a maximum pile depth V of 23m. The laser source a is 50m horizontally away from the pile hole. The horizontal laser line falls at a height of approximately 26m. The height h = 5m of the horizontal laser line position detection strip b. Six vertically distributed gratings are needed to complete one pile depth. A 10-line array laser multi-beam splitter is used, ensuring that the beam angle distribution guarantees equal distance between beams in the far-field vertical direction. Figure 6 As shown.

[0114] Furthermore, it should be understood that those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A method for depth measurement in a bottom-discharge vibratory compactor, characterized in that: Depth measurement is performed using a depth measuring device, which includes a laser light source fixed to the ground, a horizontal laser line position detection strip fixed to the side of the hopper of the bottom discharge vibratory impactor, a laser light source adjustment module for adjusting the position of the laser light source, and a data update module. When a laser light source emits a laser line at a fixed angle and hits the side of the hopper of the bottom discharge vibratory impactor, it produces a horizontal laser line. The horizontal laser line is detected by the horizontal laser line position detection strip to obtain the position h of the light beam; When the bottom discharge vibratory compactor is aligned with the pile point and the depth is 0m, the light position h corresponding to the zero point of the pile depth is set to the initial value h0. When the bottom discharge vibratory compactor is measuring the depth, the detected light position h corresponds to the value h1, and the pile depth V = h0 - h1; When the position of the horizontal laser line exceeds the detection range of the horizontal laser line position detection bar, the position of the horizontal laser line is adjusted by triggering the laser source adjustment module, so that the position of the horizontal laser line emitted by the laser source falls back into the detection range of the horizontal laser line position detection bar; at the same time, the data update module corrects the data corresponding to the pile depth V. The method for adjusting the position of the horizontal laser line includes the following steps: The horizontal laser line position detection strip is divided into five areas from top to bottom according to its height direction: upper-upper area, upper area, middle area, lower area, and lower-lower area. When the horizontal laser line enters the upper-upper zone, the laser source adjustment module is triggered, and the laser source moves downward, moving the horizontal laser line downward by a fixed distance to the upper boundary of the lower zone. When the horizontal laser line enters the lower zone, the laser source adjustment module is triggered, moving the horizontal laser line upward by a fixed distance to the lower boundary of the upper zone. The method for switching the position of the horizontal laser line is as follows: Two laser sources are set up; turning off the first laser source simultaneously turns on the other laser source. or, The position of a horizontal laser line can be changed by adjusting the optical path using a laser source. or, This is achieved by mechanically rotating the laser source to adjust the laser beam angle.

2. The method for depth measurement in a bottom-discharge vibratory compactor according to claim 1, characterized in that, Alternatively, the method for adjusting the position of the horizontal laser line includes the following steps: The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device. The horizontal laser line position detection bar on the bottom discharge vibratory impactor detects the bright and dark intervals of the horizontal grating strip, which are then processed and converted into a bright and dark sequence. During the construction of the bottom discharge vibratory compactor equipment, the detected light and dark sequence changes. The pile depth V can be obtained by multiplying the sum of the width and spacing of the horizontal grating strips by the number of changes in the light and dark sequence. A grating is formed by multiple horizontal grating strips, with unequal spacing between the gratings from top to bottom; The spacing of the gratings is set to gradually increase from top to bottom. or, A non-repeating coding sequence is formed by using horizontal grating strips of different widths and the spacing between the gratings.

3. The method for depth measurement in a bottom-discharge vibratory compactor according to claim 1, characterized in that, Alternatively, the method for adjusting the position of the horizontal laser line includes the following steps: The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device. Multiple horizontal grating strips constitute a grating. The horizontal grating strips at different positions and their widths constitute a sequence. The sequence is composed of multiple number columns, each consisting of n elements, where n is an integer greater than 3. No two number columns in the sequence are repeated. The elements in the number columns are generated randomly, pseudo-randomly, or as decimals of irrational numbers. Output the pile depth V based on the sequence.

4. The method for depth measurement in a bottom-discharge vibratory compactor according to claim 1, characterized in that, Alternatively, the method for adjusting the position of the horizontal laser line includes the following steps: The laser line emitted by the laser source is processed into horizontal grating strips distributed along the vertical direction, and then projected onto the entire bottom discharge vibratory impactor device along the height range of the bottom discharge vibratory impactor device. A grating is formed by multiple horizontal grating strips, and the grating is arranged in two columns of different colors; two laser light sources are provided. The variations in the width of the horizontal grating strips are combined into a unique sequence. The horizontal grating strips of the two columns of gratings correspond to two laser sources. The two detected sequences are then combined to form a data pair. The output pile depth V is determined based on the data.

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