CN-114813572-B - Rock block identification method and system based on photoacoustic spectroscopy

CN114813572BCN 114813572 BCN114813572 BCN 114813572BCN-114813572-B

Abstract

The invention discloses a rock block degree identification method and system based on photoacoustic spectroscopy, comprising a conveyor belt, wherein a plurality of partition boards are fixedly arranged at the upper end of the conveyor belt, the system further comprises an acquisition assembly positioned above the conveyor belt, the acquisition assembly is used for acquiring block degree information above and around a rock between two adjacent partition boards, the acquisition assembly comprises a mounting plate, an annular second track and a first track communicated with the second track are arranged on the mounting plate, the first track is distributed along the radial direction of the second track, the system further comprises a driving motor capable of displacing in the first track and the second track, a fixed column is fixedly arranged at an output shaft at the lower end of the driving motor, a spectrum module capable of adjusting an angle is fixedly arranged at the lower end of the fixed column, and a splitter plate is further arranged at the joint of the first track and the second track. The invention has the advantages of high identification accuracy and efficiency and the like.

Inventors

ZHANG ZHIGANG
LIU ZHIBING
LU LIYUAN
LIN FEI
HE ZHEN
ZHAI QINGCUI
LI JUANJUAN
LI QIANG
ZHAO MINGMING
YANG LEI

Assignees

中煤科工集团淮北爆破技术研究院有限公司

Dates

Publication Date: 20260508
Application Date: 20211214

Claims (7)

1. The rock block size identification system based on the photoacoustic spectrum is characterized by comprising a conveyor belt, wherein a plurality of partition boards are fixedly arranged at the upper end of the conveyor belt, and an acquisition assembly is positioned above the conveyor belt and is used for acquiring block size information above and around a rock between two adjacent partition boards; The collecting assembly comprises a mounting plate, wherein an annular second track and a first track communicated with the second track are arranged on the mounting plate, the first track is distributed along the radial direction of the second track, the collecting assembly further comprises a driving motor capable of displacing in the first track and the second track, an output shaft at the lower end of the driving motor is fixedly provided with a fixed column, the lower end of the fixed column is fixedly provided with a spectrum module with an adjustable angle, a connecting part of the first track and the second track is further provided with a splitter plate, one end of the splitter plate is hinged with the inner circumference of the second track, the other end of the splitter plate can rotate around a hinge part to enable the driving motor to enter the second track from the first track when rotating positively, and the driving motor can enter the first track from the second track when rotating reversely; The spectrum module comprises an adjusting plate arranged at the lower end of a fixed column, an adjusting cavity is formed between the adjusting plate and the fixed column, one end of the adjusting plate is hinged with the fixed column, a push rod is arranged at the other end of the adjusting plate, two ends of the push rod are respectively hinged with the fixed column and the adjusting plate, a light source, a monochromator and a reflecting mirror are sequentially arranged at one end, close to the adjusting cavity, of the adjusting plate, a lens is further arranged on the adjusting plate in a penetrating mode, and light rays reflected by the reflecting mirror are perpendicular to the lens on the adjusting plate; Still include with the height-adjustable's that the fixed column is connected adjusting column, spectrum module is including setting up the regulating plate at the regulating column lower extreme, the regulating plate with constitute an adjusting chamber between the regulating column, regulating plate one end with the regulating column is articulated, the regulating plate other end is provided with the push rod, the push rod both ends respectively with regulating column and regulating plate are articulated, the regulating plate is close to the one end in regulating chamber still has set gradually light source, monochromator and speculum, still run through on the regulating plate and be provided with lens, the light after the speculum reflection is perpendicular to lens on the regulating plate.
2. The photoacoustic spectrum-based rock mass recognition system of claim 1, wherein the angle of rotation of the adjustment plate is 30-60 °.
3. The photoacoustic spectroscopy-based rock mass recognition system of claim 1, wherein the inner diameter of the second track is greater than the spacing of the spacers on both sides of the rock.
4. A method for identifying a rock mass identification system based on photoacoustic spectroscopy as claimed in any one of claims 1 to 3, characterized by the steps of: s1, placing rocks between two adjacent partition plates of a conveyor belt at intervals; s2, when the rock between the partition plates is conveyed to the position right below the acquisition assembly, the conveyor belt stops moving, and the acquisition assembly is used for acquiring photoacoustic signals of the rock; and S3, analyzing the acquired photoacoustic signals to determine the size of rock block.
5. The method for recognizing rock-mass recognition system based on the photoacoustic spectrum according to claim 4, wherein the photoacoustic signals of different rock masses are collected first before the recognition is performed, and a database is formed, and when the rock-mass recognition is performed, the specific size of the rock mass is determined by comparing the collected photoacoustic signals with the information in the database.
6. The method for identifying rock mass recognition system based on photoacoustic spectroscopy according to claim 4, wherein the photoacoustic signal collected in S2 is sent to an amplifier through a microphone and sent to a computer through the amplifier for analysis.
7. The method of claim 4, wherein the height of the collection assembly relative to the conveyor belt is adjustable.

Description

Rock block identification method and system based on photoacoustic spectroscopy Technical Field The invention relates to the technical field of rock block size identification, in particular to a rock block size identification method and system based on photoacoustic spectroscopy. Background In order to study the blasting effect, sometimes the size of the blasted rock is required to be counted, the existing rock size counting method mainly screens the rock size through screens, and then the rock size counting method is characterized according to the weight of the screens passing through different apertures, and the method is time-consuming and labor-consuming. Therefore, how to improve the identification efficiency of rock mass is a technical problem to be solved by the application. Disclosure of Invention Based on the technical problems in the background art, the invention provides a rock block recognition method and a rock block recognition system based on a photoacoustic spectrum, and the rock block recognition method and the rock block recognition system have the advantages of high recognition accuracy and efficiency and the like. The rock block degree identification system based on the photoacoustic spectrum comprises a conveyor belt, wherein a plurality of partition boards are fixedly arranged at the upper end of the conveyor belt, and the rock block degree identification system further comprises an acquisition assembly located above the conveyor belt, wherein the acquisition assembly is used for acquiring block degree information located above and around a rock between two adjacent partition boards. Preferably, the collection assembly comprises a mounting plate, an annular second track and a first track communicated with the second track are arranged on the mounting plate, the first track is distributed along the second track in the radial direction, the collection assembly further comprises a driving motor capable of displacing in the first track and the second track, an output shaft at the lower end of the driving motor is fixedly provided with a fixed column, the lower end of the fixed column is fixedly provided with a spectrum module with an adjustable angle, a connecting part of the first track and the second track is further provided with a splitter plate, one end of the splitter plate is hinged with the inner circumference of the second track, the other end of the splitter plate can rotate around a hinge part to enable the driving motor to enter the second track from the first track during forward rotation, and the splitter plate can enter the first track from the second track during reverse rotation of the driving motor. Preferably, the spectrum module comprises an adjusting plate arranged at the lower end of a fixed column, an adjusting cavity is formed between the adjusting plate and the fixed column, one end of the adjusting plate is hinged to the fixed column, a push rod is arranged at the other end of the adjusting plate, two ends of the push rod are respectively hinged to the fixed column and the adjusting plate, a light source, a monochromator and a reflecting mirror are further arranged at one end, close to the adjusting cavity, of the adjusting plate, a lens is further arranged on the adjusting plate in a penetrating mode, and light reflected by the reflecting mirror is perpendicular to the lens on the adjusting plate. Preferably, the optical spectrum module further comprises a height-adjustable adjusting column connected with the fixing column, the optical spectrum module comprises an adjusting plate arranged at the lower end of the adjusting column, an adjusting cavity is formed between the adjusting plate and the adjusting column, one end of the adjusting plate is hinged to the adjusting column, a push rod is arranged at the other end of the adjusting plate, two ends of the push rod are respectively hinged to the adjusting column and the adjusting plate, a light source, a monochromator and a reflecting mirror are further arranged at one end, close to the adjusting cavity, of the adjusting plate in sequence, a lens is further arranged on the adjusting plate in a penetrating mode, and light reflected by the reflecting mirror is perpendicular to the lens on the adjusting plate. Preferably, the adjusting plate is rotated by an angle of 30-60 °. Preferably, the inner diameter of the second track is larger than the spacing between the partitions on both sides of the rock. The invention provides an identification method of the rock block identification system based on the photoacoustic spectrum, which comprises the following steps: s1, placing rocks between two adjacent partition plates of a conveyor belt at intervals; s2, when the rock between the partition plates is conveyed to the position right below the acquisition assembly, the conveyor belt stops moving, and the acquisition assembly is used for acquiring photoacoustic signals of the rock; and S3, analyzing the acquired photoacousti