CN104792286A - Stockyard bulk cargo boundary dimension parameter analog calculation method - Google Patents

Stockyard bulk cargo boundary dimension parameter analog calculation method Download PDF

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CN104792286A
CN104792286A CN201510092754.9A CN201510092754A CN104792286A CN 104792286 A CN104792286 A CN 104792286A CN 201510092754 A CN201510092754 A CN 201510092754A CN 104792286 A CN104792286 A CN 104792286A
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stockpile
cone
bulk cargo
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dimension parameter
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CN104792286B (en
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李帅
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Wisdri Engineering and Research Incorporation Ltd
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Wisdri Engineering and Research Incorporation Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant

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Abstract

The invention discloses a stockyard bulk cargo boundary dimension parameter analog calculation method. The stockyard bulk cargo boundary dimension parameter analog calculation method comprises the following steps of establishing a mathematical model; in the model, enabling a stacker-reclaimer to discharge to form into material piles W1, W2, W3 to Wn at operation positions and enabling the integral shape of a final article material pile to be formed by a series of cones and the cones to be mutually overlapped; obtaining the discharging amount C1, C2, C3, to Cn of the stacker-reclaimer at every operation position through a belt weigher; establishing an algorithm, calculating the appearance size of the material piles W1, W2, W3 to Wn according to the stacker-reclaimer displacement B1, B2, B3 to Bn in the article materials and the discharging amount C1, C2, C3, to Cn of the stacker-reclaimer at every operation position and accordingly obtaining the appearance size of the material piles in some article material. The stockyard bulk cargo boundary dimension parameter analog calculation method provides a reliable, rapid and economic mean for larger-sized bulk cargo stockyard managers and the larger-sized bulk cargo stockyard managers can timely grasp spatial states of the stockyard.

Description

A kind of stock ground bulk cargo physical dimension parameter simulation computing method
Technical field
The invention belongs to large-scale bulk cargo stock yard Automated condtrol and management domain, particularly relate to a kind of stock ground bulk cargo physical dimension parameter simulation computing method.
Background technology
At present at large-scale bulk cargo stock yard management domain, the spatiality grasping stock ground is in time the important step of large-scale bulk cargo stock yard management, and the place being related to supplied materials is distributed, and directly has influence on efficiency and the benefit of stock ground operation.Because the raw material of large-scale bulk cargo stock yard is constantly passed in and out, the spatiality how grasping stock ground in time is also a difficult point of large-scale bulk cargo stock yard management.Present stage makes an inventory mainly through the range estimation of human at periodic intervals the space hold situation in the inventories of estimating material and stock ground.There is following shortcoming: 1) estimate result to a great extent by the impact of artificial experience, error is larger; 2) labour intensity is large, makes an inventory and once needs for a long time; 3) usually just once make an inventory through longer cycle, the spatiality in stock ground can not be reflected in time.The problems referred to above have impact on the fine-grained management in stock ground to a great extent, and the space utilization situation can not grasping stock ground in time just cannot be formulated correspondingly to distribute the place of supplied materials and be optimized, and cannot realize the maximization of the utilization ratio in space, stock ground.
In order to a bit large-scale bulk cargo stock yard of the space utilization situation grasping stock ground in time have employed three-dimensional laser scanning technique, realize the real-time measurement of the spatiality in stock ground in conjunction with GPS location technology simultaneously, the space utilization information in stock ground accurately can be obtained so in real time, the mainly physical dimension parameter of stockpile, but need the expense of input very huge, the cost of tens million of unit makes the application of this technology be limited by very large.
Summary of the invention
The present invention is directed in existing large-scale bulk cargo stock yard Automated condtrol and administrative skill, in time, accurately can not grasp the space utilization situation in stock ground, the problem be optimized cannot be distributed to supplied materials place, a kind of stock ground bulk cargo physical dimension parameter simulation computing method are provided, the mode of range estimation of comparing observes the spatiality situation in stock ground, the method more accurately and reliably, simultaneously, compared with the formal parameter method of each stockpile in three-dimensional scanning measurement stock ground, the inventive method cost is lower, use faster, real-time is good.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of stock ground bulk cargo physical dimension parameter simulation computing method, the method comprises the following steps, 1) the discharging quality C in each emptying point in material strip is obtained by belt conveyer scale 1, C 2, C 3c n, stockpile is coniform, calculates adjacent stockpile when not having overlapping, the volume V of each stockpile 1, V 2, V 3v n, wherein V n=C n/ p, p are the density of stockpile; 2) the n-th stockpile cone W is calculated nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the discharging volume V of the n-th stockpile n', V n = V h n - v n v n = ∫ 0 H S h dh , that piling high is h ntime, stockpile cone W nvolume; N-th stockpile cone W nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the volume of its overlapping region is v n; S hstockpile cone W nwith stockpile cone W n-1be highly the area in the cross section of h in overlapping region, H is W nwith W n-1the height value of overlapping region; 3) as the V calculated n' error when exceeding default precision, recalculate V n'.
By technique scheme, the stockpile curved surface projection line of each stockpile and the angle of stockpile bottom surface in material strip be worth equal.
By technique scheme, as stockpile cone W nheap height be h ntime, its volume is V h n = 1 3 × π × ( h n × c tan ∂ ) 2 × h n .
By technique scheme, described stockpile cone W nwith stockpile cone W n-1be highly the cross section of h in overlapping region, its area S hconcrete method for solving be in material strip, choose any position as initial point, the length and width direction of material strip, respectively as X-axis and Y-axis, is piled high direction and is set up space coordinates as Z-direction, build S hsolving equation form be ( x n - 1 2 - B n - 1 ) + ( y n - 1 2 - A / 2 ) = r n - 1 2 - - - ( 1 ) ( x n 2 - B n ) + ( y n 2 - - A / 2 ) = r n 2 - - - ( 2 ) S h = S abc ( x , y ) + S bcd ( x , y ) , When wherein formula (1) and (2) they are highly for h respectively, W n-1with W ncross section circle expression formula, its radius is respectively r n-1and r n, two sections circle intersection point is b and c, a and the d two sections circle line of centres and W respectively ncross section circle and W n-1the intersection point of cross section circle, S abc(x, y) and S bcd(x, y) is respectively the area expression formula of curved surface abc and curved surface bcd about coordinate x, y, B n-1for W n-1the round heart in cross section and the distance of true origin, B nfor W nthe round heart in cross section relative to the distance of true origin, A is material strip width, x n-1and y n-1when being highly for h respectively, W n-1the coordinate of the upper point of cross section circle, x nand y nwhen being highly for h respectively, W nthe coordinate of the upper point of cross section circle.
By technique scheme, described S abc(x, y)=S fan ebc-S Δ ebc, when e is highly for h, W n-1the round heart in cross section, by the coordinate of e, b, c 3, solve S fan ebcwith S Δ ebc; Solve S bcd(x, y), obtains S hrepresentation is S h=f (r n-1, r n).S abc(x, y)=S fan fbc-S Δ fbc, when f is highly for h, W nthe round heart in cross section.By the coordinate of f, b, c 3, solve S fan fbcwith S Δ fbc, result is substituted into above formula and solves S abc(x, y).Curved surface dbc areal calculation formula is S dbc(x, y)=S fan ebc-S Δ ebc, when e is highly for h, W n-1the round heart in cross section.By the coordinate of e, b, c 3, solve S fan ebcwith S Δ ebc.
By technique scheme, wherein r n - 1 = ( h n - 1 - h ) / tan ∂ , r n = ( h n - h ) / tan ∂ , For S h=f (r n-1, r n), obtain S hrepresentation is S h=f (h n, h).
By technique scheme, stockpile cone W nmost rickle height H min=0, most raft is high iterative algorithm is adopted to calculate W nthe high h of heap n, then stockpile cone W is obtained nvolume V h n = 1 3 × π × ( h n × c tan ∂ ) 2 × h n , Get h ' n=(H min+ H max)/2, according to formula S h=f (h n, h) solve corresponding S ' h, according to formula V n = V h n - v n v n = ∫ 0 H S h dh , Solve the analog computation discharging volume V in the n-th emptying point n'.
By technique scheme, as the V calculated n' error when exceeding default precision, recalculate V n', this process is specially, and T is computational accuracy, and be constant, 0<T<1, works as V n'-V nduring >T, get H max=h ' n, recalculate V n'; Work as V n-V nduring ' >T, get H min=h ' n, recalculate V n'; When | V n'-V n| during >T, then W nheap highly get h n=h ' n, recalculate V n'.
Principle of work of the present invention is, according to the physical characteristics of windrow, utilizes the method for mathematical computations to simulate stock ground bulk cargo physical dimension parameter.Build a mathematical model, in the model, the stockpile W that stacker-reclaimer is formed in each operation position discharging 1, W 2, W 3w n, the global shape of final material strip stockpile is made up of a series of cone, overlapped between cone.Stacker-reclaimer is at each operation position discharging quantity C 1, C 2, C 3c ncan be obtained by belt conveyer scale.In order to calculate the physical dimension parameter of final stockpile in material strip, construct a kind of algorithm, according to the displacement B of stacker-reclaimer in material strip 1, B 2, B 3b nwith at each station loading and unloading material amount C 1, C 2, C 3c n, calculate stockpile W 1, W 2, W 3w nphysical dimension, thus obtain the physical dimension of all stockpiles in a certain material strip.
The beneficial effect that the present invention produces is: the mode of range estimation of comparing observes the spatiality situation in stock ground, the method more accurately and reliably, simultaneously, compared with the formal parameter method of each stockpile in three-dimensional scanning measurement stock ground, the inventive method cost is lower, uses faster, and real-time is good.Energy space utilization situation that is timely, accurately grasp stock ground, distributes supplied materials place and is optimized.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the profile outline of stockpile in large-scale bulk cargo stock yard material strip;
Fig. 2 is the stockpile profile outline in the (n-1)th and n-th emptying point in material strip in the embodiment of the present invention;
Fig. 3 is the schematic diagram in the embodiment of the present invention, material strip being set up coordinate system;
Fig. 4 is the n-th stockpile cone W in the embodiment of the present invention nwith (n-1)th stockpile cone W n-1partly overlapping sectional view;
Fig. 5 is the process flow diagram that in the embodiment of the present invention, stockpile piles high computational algorithm.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
In the embodiment of the present invention, provide a kind of stock ground bulk cargo physical dimension parameter simulation computing method, the method comprises the following steps, 1) the discharging quality C in each emptying point in material strip is obtained by belt conveyer scale 1, C 2, C 3c n, stockpile is coniform, calculates adjacent stockpile when not having overlapping, the volume V of each stockpile 1, V 2, V 3v n, wherein V n=C n/ p, p are the density of stockpile; 2) the n-th stockpile cone W is calculated nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the discharging volume V of the n-th stockpile n', V n = V h n - v n v n = &Integral; 0 H S h dh , that piling high is h ntime, stockpile cone W nvolume; N-th stockpile cone W nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the volume of its overlapping region is v n; S hstockpile cone W nwith stockpile cone W n-1be highly the area in the cross section of h in overlapping region, H is W nwith W n-1the height value of overlapping region; 3) as the V calculated n' error when exceeding default precision, recalculate V n'.As shown in Figure 1, be the profile outline of stockpile in large-scale bulk cargo stock yard material strip, stockpile is coniform, and Fig. 2 is in the embodiment of the present invention, the n-th stockpile cone W nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the stockpile profile outline in the (n-1)th and n-th emptying point in material strip, Fig. 4 is wherein the n-th stockpile cone W nwith (n-1)th stockpile cone W n-1partly overlapping sectional view.
Wherein, the stockpile curved surface projection line of each stockpile and the angle of stockpile bottom surface in material strip be worth equal.
Further, as stockpile cone W nheap height be h ntime, its volume is V h n = 1 3 &times; &pi; &times; ( h n &times; c tan &PartialD; ) 2 &times; h n .
Wherein, stockpile cone W nwith stockpile cone W n-1be highly the cross section of h in overlapping region, its area S hconcrete method for solving be as shown in Figure 3, material strip is chosen any position as initial point, the length and width direction of material strip, respectively as X-axis and Y-axis, is piled high direction and is set up space coordinates as Z-direction, build S hsolving equation form be ( x n - 1 2 - B n - 1 ) + ( y n - 1 2 - A / 2 ) = r n - 1 2 - - - ( 1 ) ( x n 2 - B n ) + ( y n 2 - - A / 2 ) = r n 2 - - - ( 2 ) S h = S abc ( x , y ) + S bcd ( x , y ) , When wherein formula (1) and (2) they are highly for h respectively, W n-1with W ncross section circle expression formula, its radius is respectively r n-1and r n, two sections circle intersection point is b and c, a and the d two sections circle line of centres and W respectively ncross section circle and W n-1the intersection point of cross section circle, S abc(x, y) and S bcd(x, y) is respectively the area expression formula of curved surface abc and curved surface bcd about coordinate x, y, B n-1for W n-1the round heart in cross section and the distance of true origin, B nfor W nthe round heart in cross section relative to the distance of true origin, A is material strip width, x n-1and y n-1when being highly for h respectively, W n-1the coordinate of the upper point of cross section circle, x nand y nwhen being highly for h respectively, W nthe coordinate of the upper point of cross section circle.Further, the area of curved surface abc and curved surface bcd is calculated, described S abc(x, y)=S fan ebc-S Δ ebc, when e is highly for h, W n-1the round heart in cross section, by the coordinate of e, b, c 3, solve S fan ebcwith S Δ ebc; Solve S bcd(x, y), obtains S hrepresentation is S h=f (r n-1, r n).S abc(x, y)=S fan fbc-S Δ fbc, when f is highly for h, W nthe round heart in cross section.By the coordinate of f, b, c 3, solve S fan fbcwith S Δ fbc, result is substituted into above formula and solves S abc(x, y).Curved surface dbc areal calculation formula is S dbc(x, y)=S fan ebc-S Δ ebc, when e is highly for h, W n-1the round heart in cross section.By the coordinate of e, b, c 3, solve S fan ebcwith S Δ ebc.
Wherein r n - 1 = ( h n - 1 - h ) / tan &PartialD; , r n = ( h n - h ) / tan &PartialD; , For S h=f (r n-1, r n), obtain S hrepresentation is S h=f (h n, h).
Further, stockpile cone W nmost rickle height H min=0, most raft is high iterative algorithm is adopted to calculate W nthe high h of heap n, then stockpile cone W is obtained nvolume V h n = 1 3 &times; &pi; &times; ( h n &times; c tan &PartialD; ) 2 &times; h n , Get h ' n=(H min+ H max)/2, according to formula S h=f (h n, h) solve corresponding S ' h, according to formula V n = V h n - v n v n = &Integral; 0 H S h dh , Solve the analog computation discharging volume V in the n-th emptying point n'.
Wherein, as the V calculated n' error when exceeding default precision, recalculate V n', as shown in Figure 5, this process is specially, and T is computational accuracy, and be constant, 0<T<1, works as V n'-V ntime >T (tolerence), get H max=h ' n, recalculate V n'; Work as V n-V nduring ' >T, get H min=h ' n, recalculate V n'; When | V n'-V n| during >T, then W nheap highly get h n=h ' n, recalculate V n'.
Wherein r n - 1 = ( h n - 1 - h ) / tan &PartialD; , r n = ( h n - h ) / tan &PartialD; , For S h=f (r n-1, r n), obtain S h=f (r n-1, r n)=f (h n-1, h n, h), to regard to the n-th setting, h n-1for known conditions, then solve S hthe form of calculating formula is S h=f (h n, h).
The mode of range estimation of comparing observes the spatiality situation in stock ground, and more accurately and reliably, meanwhile, compared with the formal parameter method of each stockpile in three-dimensional scanning measurement stock ground, the inventive method cost is lower, uses faster, and real-time is good for the inventive method.Energy space utilization situation that is timely, accurately grasp stock ground, distributes supplied materials place and is optimized.
Should be understood that, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection domain that all should belong to claims of the present invention.

Claims (8)

1. the discharging quality C in each emptying point in material strip stock ground bulk cargo physical dimension parameter simulation computing method, it is characterized in that, the method comprises the following steps, 1) is obtained by belt conveyer scale 1, C 2, C 3c n, stockpile is coniform, calculates adjacent stockpile when not having overlapping, the volume V of each stockpile 1, V 2, V 3v n, wherein V n=C n/ p, p are the density of stockpile; 2) the n-th stockpile cone W is calculated nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the discharging volume V ' of the n-th stockpile n, that piling high is h ntime, stockpile cone W nvolume; N-th stockpile cone W nwith (n-1)th stockpile cone W n-1in partly overlapping situation, the volume of its overlapping region is v n; S hstockpile cone W nwith stockpile cone W n-1be highly the area in the cross section of h in overlapping region, H is W nwith W n-1the height value of overlapping region; 3) as the V ' calculated nerror when exceeding default precision, recalculate V ' n.
2. stock ground according to claim 1 bulk cargo physical dimension parameter simulation computing method, is characterized in that, the stockpile curved surface projection line of each stockpile and the angle of stockpile bottom surface in material strip be worth equal.
3. stock ground according to claim 1 and 2 bulk cargo physical dimension parameter simulation computing method, is characterized in that, as stockpile cone W nheap height be h ntime, its volume is
4. stock ground according to claim 3 bulk cargo physical dimension parameter simulation computing method, is characterized in that, described stockpile cone W nwith stockpile cone W n-1be highly the cross section of h in overlapping region, its area S hconcrete method for solving be in material strip, choose any position as initial point, the length and width direction of material strip, respectively as X-axis and Y-axis, is piled high direction and is set up space coordinates as Z-direction, build S hsolving equation form be when wherein formula (1) and (2) they are highly for h respectively, W n-1with W ncross section circle expression formula, its radius is respectively r n-1and r n, two sections circle intersection point is b and c, a and the d two sections circle line of centres and W respectively ncross section circle and W n-1the intersection point of cross section circle, S abc(x, y) and S bcd(x, y) is respectively the area expression formula of curved surface abc and curved surface bcd about coordinate x, y, B n-1for W n-1the round heart in cross section and the distance of true origin, B nfor W nthe round heart in cross section relative to the distance of true origin, A is material strip width, x n-1and y n-1when being highly for h respectively, W n-1the coordinate of the upper point of cross section circle, x nand y nwhen being highly for h respectively, W nthe coordinate of the upper point of cross section circle.
5. stock ground according to claim 4 bulk cargo physical dimension parameter simulation computing method, is characterized in that, described S abc(x, y)=S fan ebc-S Δ ebc, when e is highly for h, W n-1the round heart in cross section, by the coordinate of e, b, c 3, solve S fan ebcwith S Δ ebc; Solve S bcd(x, y), obtains S hrepresentation is S h=f (r n-1, r n).
6. stock ground according to claim 5 bulk cargo physical dimension parameter simulation computing method, is characterized in that, wherein for S h=f (r n-1, r n), obtain S hrepresentation is S h=f (h n, h).
7. stock ground according to claim 6 bulk cargo physical dimension parameter simulation computing method, is characterized in that, stockpile cone W nmost rickle height H min=0, most raft is high iterative algorithm is adopted to calculate W nthe high h of heap n, then stockpile cone W is obtained nvolume get h ' n=(H min+ H max)/2, according to formula S h=f (h n, h) solve corresponding S ' h, according to formula solve the analog computation discharging volume V ' in the n-th emptying point n.
8. stock ground according to claim 7 bulk cargo physical dimension parameter simulation computing method, is characterized in that, as the V ' calculated nerror when exceeding default precision, recalculate V ' n, this process is specially, and T is computational accuracy, and be constant, 0<T<1, as V ' n-V nduring >T, get H max=h ' n, recalculate V ' n; Work as V n-V ' nduring >T, get H min=h ' n, recalculate V ' n; When | V ' n-V n| during >T, then W nheap highly get h n=h ' n, recalculate V ' n.
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