Three-dimensional non-contact muck measurement method

Abstract

The invention discloses a three-dimensional non-contact muck measurement method, which belongs to the field of non-contact muck measurement, and is characterized in that when a transmission belt transports muck, an upper contour scanning part is arranged above the transmission belt, and a side surface transmission belt contour scanning part is arranged on the side surface of the transmission belt; the upper portion muck contour scanning part is used for obtaining initial contour information of the conveying belt system and upper surface contour information of muck during muck conveying, and the side face conveying belt contour scanning part is used for measuring deflection information of a conveying belt during muck conveying. The volume of the soft muck is calculated through a formula on the basis of information collected by synchronously triggering the scanning components and the running speed of the conveying belt, and then the volume of the discharged natural soil is finally calculated by combining the volume of the soft muck and the relationship between the volume of the natural soil and the volume conversion coefficient of the muck volume. According to the invention, accurate measurement of the discharge amount of the muck in the shield construction process is realized, and the method plays a key role in improving the engineering quality and efficiency.

Description

Technical Field

[0001] The invention belongs to the field of non-contact slag measurement, and in particular relates to a three-dimensional non-contact slag measurement method. Background Art

[0002] Shield construction is the main means to promote the development of urban subways. However, shield construction still faces many outstanding problems. Among them, during the shield tunneling process, there is a lack of balance control between earth excavation and waste discharge. If the amount of earth discharge is too large, it will cause excessive settlement of the surface or even collapse. If the amount of earth discharge is too small, it may cause surface uplift and damage. Therefore, the problem of waste discharge leads to delays in risk warnings and problem investigation, and often causes surface collapse and significant subsidence. The current slag measurement method only uses the upper single sensor measurement method, which cannot obtain the deflection of the transport belt, and has the problem of low measurement accuracy. Therefore, a three-dimensional non-contact slag measurement method is needed to achieve accurate measurement of slag discharge. Summary of the invention

[0003] The purpose of the present invention is to provide a three-dimensional non-contact slag measurement method to solve the problem of inaccurate measurement of slag discharge volume.

[0004] The technical solution adopted by the present invention is as follows: a three-dimensional non-contact slag measurement method, when the conveyor belt transports slag, an upper contour scanning component is arranged above the conveyor belt, and a side conveyor belt contour scanning component is arranged on the side of the conveyor belt, the upper slag contour scanning component is used to obtain the initial contour information of the conveyor belt system and the upper surface contour information of the slag when transporting the slag, and the side conveyor belt contour scanning component is used to measure the deflection information of the conveyor belt when transporting the slag, based on the information collected by the synchronous triggering of each scanning component and the running speed of the conveyor belt, the volume V of the soft slag is calculated by the following formula zt ,

[0005]

[0006] Where f(x0) represents the initial profile height information of the conveyor belt system, which is a function of the position information; f t (x) represents the height information of the upper surface contour of the slag when the slag is transported, which is a function of the position information and time t; f t (x n ) represents the deformation information of the side of the conveyor belt when carrying soil, which is a function of the position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the running speed of the conveyor belt;

[0007] Then, the volume of the discharged natural soil is finally calculated by combining the volume conversion coefficients of the soft slag volume, the natural soil volume and the slag volume.

[0008] Furthermore, each scanning component is a laser scanner or a high-speed camera, and the measuring frequency is continuously adjusted between 10 Hz and 1000 Hz.

[0009] Another object of the present invention is to provide a three-dimensional non-contact slag measurement system, comprising an upper contour scanning component, a side conveyor belt contour scanning component, and a data processing and calculation module. When the conveyor belt transports slag, the upper contour scanning component is arranged above the conveyor belt, and the side conveyor belt contour scanning component is arranged on the side of the conveyor belt. The upper slag contour scanning component is used to obtain the initial contour information of the conveyor belt system and the upper surface contour information of the slag when transporting the slag. The side conveyor belt contour scanning component is used to measure the deflection information of the conveyor belt when transporting the slag. The data processing and calculation module calculates the volume V of the soft slag based on the information collected by the synchronous triggering of each scanning component and the running speed of the conveyor belt through the following formula zt ,

[0010]

[0011] Where f(x0) represents the initial profile height information of the conveyor belt system, which is a function of the position information; f t (x) represents the height information of the upper surface contour of the slag when the slag is transported, which is a function of the position information and time t; f t (x n ) represents the deformation information of the side of the conveyor belt when carrying soil, which is a function of the position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the running speed of the conveyor belt;

[0012] Then the data processing and calculation module combines the volume of the soft slag and the volume conversion coefficient between the volume of the natural soil and the volume of the slag, and finally calculates and outputs the volume of the discharged natural soil.

[0013] Furthermore, each scanning component is a laser scanner or a high-speed camera, and the measuring frequency is continuously adjustable between 10 Hz and 1000 Hz.

[0014] Advantages and beneficial effects of the present invention: The present invention adopts a non-contact measurement method with an adjustable measurement range and a scanning accuracy of up to thousands of hertz. It can monitor the balance between earth excavation and waste slag discharge in real time and timely warn of over-discharge. It can effectively avoid dangerous situations such as ground collapse and open excavation collapse caused by improper slag discharge, and ensure construction safety. The present invention also helps to identify possible problems in advance, reduce accident risks, and provide on-site managers with more sufficient information and decision-making basis, thereby optimizing project progress and cost control. In summary, the present invention realizes the accurate measurement of slag discharge during shield construction, which plays a key role in improving project quality and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the principle of the three-dimensional non-contact soil measurement method;

[0016] Reference numerals: 1. upper profile scanning component; 2. side conveyor belt profile scanning component; 3. conveyor belt; 4. slag; DETAILED DESCRIPTION

[0017] In order to make the purpose, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0018] Embodiment 1:

[0019] Combination Figure 1 This embodiment provides a three-dimensional non-contact slag measurement method. When the conveyor belt transports the slag, an upper contour scanning component is arranged above the conveyor belt, and a side conveyor belt contour scanning component is arranged on the side of the conveyor belt.

[0020] The upper slag profile scanning component is used to obtain the initial profile information of the conveyor belt system and the upper surface profile information of the slag when transporting the slag. The side conveyor belt profile scanning component is used to measure the deflection information of the conveyor belt when transporting the slag.

[0021] First, the scanning range θ of the upper slag contour scanning component is set according to the size of the conveyor belt. The upper and side scanning components record the baseline data under no-load. Then, according to the speed of the slag transportation working state, the sampling frequency of the upper and side scanning components is set, and the upper surface contour of the slag and the belt deflection information are synchronously triggered to collect. Based on the above collected information and the running speed of the conveyor belt, the volume V of the soft slag is calculated by the following formula: zt ,

[0022]

[0023] Where f(x0) represents the initial profile height information of the conveyor belt system, which is a function of the position information; f t (x) represents the height information of the upper surface contour of the slag when the slag is transported, which is a function of the position information and time t; f t (x n ) represents the deformation information of the side of the conveyor belt when carrying soil, which is a function of the position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the running speed of the conveyor belt;

[0024] Then, the volume of the discharged natural soil is finally calculated by combining the volume conversion coefficients of the soft slag volume, the natural soil volume and the slag volume.

[0025] In this embodiment, a solid cross-section profile scanning component is arranged above and on the side of the slag conveyor belt. The scanning component can be a laser scanner or a high-speed camera, but is not limited to these two types of instruments. The scanning range of the scanning component is more adjustable to the size of the conveyor belt, and the frequency range is continuously adjustable from 10Hz to 1000Hz. In addition, the upper and side scanning components are located in the same plane, and both measure the solid surface profile in the plane. It is important that the upper and measuring scanning components are synchronously triggered for measurement, that is, data is collected at the same time, and the volume of the discharged natural soil body is finally accurately measured by processing and calculating the data.

Claims

1. A three-dimensional non-contact method for measuring slag when the slag is transported by a conveyor belt, characterized in that: An upper contour scanning component is arranged above the conveyor belt, and a side conveyor belt contour scanning component is arranged on the side of the conveyor belt. The upper slag contour scanning component is used to obtain the initial contour information of the conveyor belt system and the upper surface contour information of the slag when transporting the slag. The side conveyor belt contour scanning component is used to measure the deflection information of the conveyor belt when transporting the slag. Based on the information collected by the synchronous triggering of each scanning component and the running speed of the conveyor belt, the volume V of the soft slag is calculated by the following formula: zt , Where f(x0) represents the initial profile height information of the conveyor belt system, which is a function of the position information; f t (x) represents the height information of the upper surface contour of the slag when the slag is transported, which is a function of the position information and time t; f t (x n ) represents the deformation information of the side of the conveyor belt when carrying soil, which is a function of the position information and time t; t m Represents the length of time, l k Represents spatial scale; v is the running speed of the conveyor belt; Then, the volume of the discharged natural soil is finally calculated by combining the volume conversion coefficients of the soft slag volume, the natural soil volume and the slag volume.

2. A three-dimensional non-contact slag measurement method according to claim 1, characterized in that: Each scanning component is a laser scanner or a high-speed camera, and the measuring frequency is continuously adjusted between 10Hz-1000Hz.

3. A three-dimensional non-contact muck measurement system, comprising an upper profile scanning component, a side conveyor belt profile scanning component, and a data processing and calculation module. When the conveyor belt is transporting muck, it is characterized by: An upper contour scanning component is arranged above the conveyor belt, and a side conveyor belt contour scanning component is arranged on the side of the conveyor belt. The upper slag contour scanning component is used to obtain the initial contour information of the conveyor belt system and the upper surface contour information of the slag when transporting the slag. The side conveyor belt contour scanning component is used to measure the deflection information of the conveyor belt when transporting the slag. The data processing and calculation module calculates the volume V of the soft slag based on the information collected by the synchronous triggering of each scanning component and the running speed of the conveyor belt through the following formula zt , Where f(x0) represents the initial profile height information of the conveyor belt system, which is a function of the position information; f t (x) represents the height information of the upper surface contour of the slag when the slag is transported, which is a function of the position information and time t; f t (x n ) represents the deformation information of the side of the conveyor belt when carrying soil, which is a function of the position information and time t; t m Represents the length of time, l k Represents spatial scale; v is the running speed of the conveyor belt; Then the data processing and calculation module combines the volume of the soft slag and the volume conversion coefficient between the volume of the natural soil and the volume of the slag, and finally calculates and outputs the volume of the discharged natural soil.

4. The three-dimensional non-contact soil measurement system according to claim 3 is characterized in that: Each scanning component is a laser scanner or a high-speed camera, and the measuring frequency is continuously adjustable between 10Hz-1000Hz.

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