Three-dimensional non-contact earth measurement method

Abstract

The application discloses a kind of in stereoscopic non-contact sludge measuring method, belong to non-contact sludge measuring field, when conveying belt transports sludge, upper profile scanning component is set in the upper of conveying belt, side surface conveying belt profile scanning component is set in the side of conveying belt, the upper sludge profile scanning component is used to obtain the initial profile information of conveying belt system and the upper surface profile information of sludge when transporting sludge, the side surface conveying belt profile scanning component is used to measure the deflection information of conveying belt when transporting sludge, based on the information collected by each scanning component and the running speed of conveying belt triggered synchronously, the volume of soft sludge is obtained by formula calculation, then combined with the relationship between the volume of soft sludge volume and natural soil volume and sludge volume volume conversion coefficient, finally, the volume of discharged natural soil volume is obtained by calculation.The application realizes the accurate measurement of sludge discharge capacity in shield construction process, and plays a key role in improving 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. Excessive discharge of soil will cause excessive surface settlement or even collapse, while too little discharge may cause surface uplift and damage. Therefore, the problem of waste discharge leads to delays in risk warnings and problem investigation, often causing 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, resulting in low measurement accuracy. Therefore, a three-dimensional non-contact slag measurement method is needed to achieve accurate measurement of slag discharge volume. 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 set above the conveyor belt, and a side conveyor belt contour scanning component is set 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 ,

[0005]

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

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

[0008] Furthermore, each scanning component is a laser scanner or a high-speed camera, and the measurement 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 set above the conveyor belt, and the side conveyor belt contour scanning component is set 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 slag. The side conveyor belt contour scanning component is used to measure the deflection information of the conveyor belt when transporting 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 by the following formula zt ,

[0010]

[0011] Where f(x0) represents the initial profile height information of the conveyor system, which is a function of the position information; f t (x) represents the height information of the upper surface of the muck when the muck 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 muck, which is a function of position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the 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 natural soil volume and the slag volume, 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 measurement 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 phenomena; 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 precise 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 objectives, 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 intended to limit the present invention.

[0018] Example 1:

[0019] Combine Figure 1 This embodiment provides a three-dimensional non-contact slag measurement method. When the conveyor belt is transporting slag, an upper contour scanning component is set above the conveyor belt, and a side conveyor belt contour scanning component is set 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 soil 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 conditions. Then, the sampling frequency of the upper and side scanning components is set according to the speed of the soil transportation working state. The upper surface contour of the soil and the belt deflection information at this time are synchronously triggered to be collected. Based on the above collected information and the running speed of the conveyor belt, the volume V of the soft soil is calculated by the following formula: zt ,

[0022]

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

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

[0025] In this embodiment, solid cross-sectional profile scanning components are positioned above and on the sides of the soil conveyor belt. These scanning components can be either laser scanners or high-speed cameras, but are not limited to these two types of instruments. The scanning range of the scanning components is adjustable according to the size of the conveyor belt, and the frequency range is continuously adjustable from 10 Hz to 1000 Hz. Furthermore, the upper and side scanning components are located in the same plane, both measuring the solid surface profile within the plane. Importantly, the upper and side scanning components are triggered synchronously, meaning that data is collected simultaneously at the same time. Through data processing and calculation, the volume of discharged natural soil can ultimately be accurately measured.

Claims

1. A three-dimensional non-contact method for measuring slag when the slag is transported on a conveyor belt, characterized by: An upper profile scanning component is set above the conveyor belt, and a side conveyor belt profile scanning component is set on the side of the conveyor belt. The upper 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 slag. The side conveyor belt profile scanning component is used to measure the deflection information of the conveyor belt when transporting 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 system, which is a function of the position information; f t (x) represents the height information of the upper surface 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 muck, which is a function of position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the conveyor belt running speed; Then, the volume of the discharged natural soil is finally calculated by combining the relationship between the volume of the soft slag and the volume conversion coefficient of the natural soil volume and the slag volume.

2. The three-dimensional non-contact soil measurement method according to claim 1, characterized in that: Each scanning component is a laser scanner or a high-speed camera, and the measurement 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, the system is characterized by: An upper profile scanning component is provided above the conveyor belt, and a side conveyor belt profile scanning component is provided on the side of the conveyor belt. The upper 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. 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 by the following formula zt , Where f(x0) represents the initial profile height information of the conveyor system, which is a function of the position information; f t (x) represents the height information of the upper surface 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 muck, which is a function of position information and time t; t m Represents the length of time, l k represents the spatial scale; v is the conveyor belt running speed; Then the data processing and calculation module combines the volume of the soft slag and the volume conversion coefficient between the natural soil volume and the slag volume, 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, 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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