CN118408868A - Solid concentration detection system and solid concentration detection method for coal-water mixture - Google Patents

Abstract

Embodiments of the present disclosure provide a system and method for detecting the solids concentration of a coal water mixture. The system comprises a light source module, a light emitting surface and a light receiving module, wherein the light source module is arranged on a first side pipe wall of a coal-water mixture transportation pipeline, and the light emitting surface is opposite to the first side pipe wall; the first photoelectric detector is arranged on a second side pipe wall opposite to the first side pipe wall, and is coaxially arranged with the light source module, and the light receiving surface of the first photoelectric detector is opposite to the second side pipe wall; the processing module is connected with the output end of the first photoelectric detector; the light source module can continuously output a reference light beam with fixed wavelength and intensity, the first photoelectric detector can collect detection light intensity signals of the detection light beam, the processing module can compensate the detection light intensity signals to obtain target detection light intensity signals, and the concentration of coal particles in the coal-water mixture is determined according to the reference light intensity signals of the reference light beam and the target detection light intensity signals. The system can improve the efficiency and adaptability of detection and can also improve the accuracy and stability of the detection result.

Description

Solid concentration detection system and solid concentration detection method for coal-water mixture

Technical Field

Embodiments of the present disclosure relate to the technical field of chip automatic testing, and in particular to a solid concentration detection system and a solid concentration detection method for a coal-water mixture.

Background technique

In the coal-water mixture transportation system, accurate measurement of the solid concentration of the coal-water mixture is crucial for the control of the centralized pipeline transportation of the coal-water mixture in the production process of hydraulic punching in low-permeability coal seams and coal mines. The traditional coal-water mixture solid concentration detection method has many shortcomings, such as difficulty in adapting to dynamically changing concentrations, flow rates and particle sizes, poor reliability and high failure rate. Therefore, it is urgent to propose an accurate and adaptable coal-water mixture solid concentration detection scheme.

Summary of the invention

The embodiments of the present disclosure provide a solid concentration detection system and a solid concentration detection method for a coal-water mixture, which can improve the efficiency and adaptability of solid concentration detection, and can also improve the accuracy and stability of the detection results.

In a first aspect, the present disclosure provides a solid concentration detection system for a coal-water mixture, comprising: a light source module, arranged on a first side wall of a coal-water mixture transport pipeline, the light emitting surface of the light source module facing away from the first side wall; the light source module is used to continuously output a reference light beam with a fixed wavelength and intensity.

A first photoelectric detector is arranged on the second side pipe wall of the coal-water mixture transportation pipeline, the first photoelectric detector is coaxially arranged with the light source module, the light receiving surface of the first photoelectric detector faces away from the second side pipe wall, and the second side pipe wall faces the first side pipe wall; the first photoelectric detector is used to receive a detection light beam and collect a detection light intensity signal of the detection light beam, the detection light beam is the light beam after the reference light beam passes through the coal-water mixture in the coal-water mixture transportation pipeline.

A processing module is connected to the output end of the first photodetector; the processing module is used to receive the detection light intensity signal, and compensate the detection light intensity signal to obtain a target detection light intensity signal, and determine the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference beam and the target detection light intensity signal.

In some embodiments of the present disclosure, the light source module includes:

The light source is used to output a light source beam. The collimator is coaxially arranged with the light source; the collimator is used to receive the light source beam and collimate the light source beam.

In some embodiments of the present disclosure, the light source module further includes:

A beam splitter is located on the light-emitting side of the collimator and is coaxially arranged with the light source; the beam splitter is used to split the collimated light beam into two reference light beams with equal intensities, wherein one reference light beam is output through the transmitted light light-emitting surface, and the other reference light beam is output through the reflected light light-emitting surface.

The solid concentration detection system also includes:

A second photodetector is located on one side of the reflected light emitting surface of the spectroscope and is coaxially arranged with the spectroscope. The output end of the second photodetector is connected to the processing module. The second photodetector is used to receive the reference light beam and collect the reference light intensity signal.

In some embodiments of the present disclosure, the light source module further includes: a light source control unit connected to the light source; the light source control unit is used to control the light source to output the light source beam according to a light source control signal.

The processing module is connected to the light source control unit, and the processing module is further used to determine the reference light intensity signal according to the light source control signal.

In some embodiments of the present disclosure, the light source includes a plurality of fixed light sources, and the wavelength and/or intensity of the light source light beam output by each of the fixed light sources is different.

The light source module is further used to output a plurality of reference light beams, each of which has a different wavelength and/or intensity; the first photodetector is further used to receive a plurality of detection light beams and collect a plurality of detection light intensity signals.

In some embodiments of the present disclosure, the light source is an adjustable light source, and the wavelengths and/or intensities of the multiple light source light beams output by the adjustable light source are different.

The light source module is further used to output a plurality of reference light beams, each of which has a different wavelength and/or intensity; the first photodetector is further used to receive a plurality of detection light beams and collect a plurality of detection light intensity signals.

In some embodiments of the present disclosure, the processing module is further used to receive a plurality of the detection light intensity signals, and to compensate the plurality of the detection light intensity signals respectively to obtain a plurality of the target detection light intensity signals, and to determine the concentration of coal particles in the coal-water mixture according to the plurality of the target detection light intensity signals and the respective corresponding reference light intensity signals.

In some embodiments of the present disclosure, the solid concentration detection system also includes: an environmental detection module, which is arranged in the coal-water mixture transportation pipeline, and the output end of the environmental detection module is connected to the processing module; the environmental detection module is used to collect environmental information in the coal-water mixture transportation pipeline, and the environmental information includes temperature information and/or humidity information.

The processing module is further used to compensate the detection light intensity signal according to the environmental information to obtain the target detection light intensity signal.

In some embodiments of the present disclosure, the solid concentration detection system further includes: a monitoring device connected to an output end of the processing module.

The monitoring device is used to monitor the concentration of coal particles in the coal-water mixture in real time.

In a second aspect, the present disclosure provides a method for detecting the solid concentration of a coal-water mixture, which is applied to any coal-water mixture solid concentration detection system provided in the first aspect, and the method comprises:

Receive a detection light intensity signal of a detection light beam, wherein the detection light beam is a light beam obtained after a reference light beam passes through the coal-water mixture in a coal-water mixture transport pipeline, and the reference light beam is a light beam with a fixed wavelength and intensity output by a light source module; compensate the detection light intensity signal to obtain a target detection light intensity signal; determine the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference light beam and the target detection light intensity signal.

In the technical solution of the embodiment of the present disclosure, the solid concentration detection system of the coal-water mixture includes: a light source module, which is arranged on the first side wall of the coal-water mixture transportation pipeline, and the light emitting surface of the light source module faces away from the first side wall; a first photoelectric detector, which is arranged on the second side wall of the coal-water mixture transportation pipeline, and the first photoelectric detector is coaxially arranged with the light source module, and the light receiving surface of the first photoelectric detector faces away from the second side wall, and the second side wall faces the first side wall; a processing module, which is connected to the output end of the first photoelectric detector. The light source module can continuously output a reference beam with a fixed wavelength and intensity, the first photoelectric detector can receive the detection beam, and collect the detection light intensity signal of the detection beam, the detection beam is the beam after the reference beam passes through the coal-water mixture in the coal-water mixture transportation pipeline, the processing module can receive the detection light intensity signal, and compensate the detection light intensity signal to obtain the target detection light intensity signal, and determine the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference beam and the target detection light intensity signal, so as to realize the optical detection of the solid concentration of the coal-water mixture, thereby improving the efficiency and applicability of the solid concentration detection. In addition, since the light source module can output a stable light source beam, a stable detection light intensity signal can be obtained, thereby improving the stability of the detection result. By compensating the detection light intensity signal through the processing module, the accuracy of the detection light intensity signal can be improved, thereby improving the accuracy of the detection result.

The above description is only an overview of the technical solution of the embodiment of the present application. In order to more clearly understand the technical means of the embodiment of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the embodiment of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present application, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

FIG1 is a schematic structural diagram of a solid concentration detection system for a coal-water mixture provided in an embodiment of the present disclosure.

FIG2 is a schematic structural diagram of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure.

FIG3 is a schematic diagram of the structure of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure.

FIG4 is a schematic structural diagram of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure.

FIG5 is a schematic diagram of the structure of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure.

FIG6 is a schematic flow chart of a method for detecting solid concentration of a coal-water mixture provided in an embodiment of the present disclosure.

Detailed ways

In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those skilled in the art without creative work also fall within the scope of protection of the present disclosure.

Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by a person skilled in the art to which the subject matter of the present disclosure belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the specification and the relevant art, and will not be interpreted in an idealized or overly formal form unless otherwise explicitly defined herein. As used herein, a statement that two or more parts are "connected" together shall mean that the parts are directly joined together or joined through one or more intermediate components, and may be wired or wireless.

Reference to "embodiments" in this disclosure means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase "embodiments" in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this disclosure may be combined with other embodiments.

In addition, the terms "first", "second", etc. in the specification and claims of the present disclosure or the above-mentioned drawings are used to distinguish different objects rather than to describe a specific order, and may explicitly or implicitly include one or more of the features.

In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings.

The solid concentration detection system of the coal-water mixture disclosed in the present invention is applied to the coal-water mixture transportation system, and the coal-water mixture transportation system comprises the solid concentration detection system of the coal-water mixture, a transmission control module, a transmission power module and a coal-water mixture transportation pipeline. Among them, the input end of the transmission control module is connected to the output end of the solid concentration detection system, and the output end of the transmission control module is connected to the transmission power module.

Exemplarily, the coal-water mixture is transmitted in the coal-water mixture transport pipeline, and its specific transmission speed is controlled by the power of the transmission power module. The greater the power of the transmission power module, the greater the transmission speed of the coal-water mixture in the coal-water mixture transport pipeline. In industrial production processes such as hydraulic punching in coal mines with low permeability coal seams, it is very important to control the transmission speed of the coal-water mixture in the coal-water mixture transport pipeline. The solid concentration detection system can output the concentration of coal particles in the coal-water mixture, and the transmission control module can receive the concentration of coal particles in the coal-water mixture, and control the power of the transmission power module according to the concentration of coal particles in the coal-water mixture, thereby controlling the transmission speed of the coal-water mixture in the coal-water mixture transport pipeline.

The solid concentration detection system of coal-water mixture is described in detail below with reference to several specific embodiments.

FIG1 is a schematic structural diagram of a coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure. As shown in FIG1 , the coal-water mixture solid concentration detection system 100 includes: a light source module 110 , a first photodetector 120 and a processing module 130 .

The light source module 110 is arranged on the first side wall 210 of the coal-water mixture transport pipeline 200, and the light emitting surface of the light source module 110 faces away from the first side wall 210. The first photodetector 120 is arranged on the second side wall 220 of the coal-water mixture transport pipeline 200, the coal-water mixture transport pipeline 200 is coaxially arranged with the light source module 110, the light receiving surface of the first photodetector 120 faces away from the second side wall 220, and the second side wall 220 faces the first side wall 210. The processing module 130 is connected to the output end of the first photodetector 120.

The light source module 110 is used to continuously output a reference light beam Or with a fixed wavelength and intensity; the first photodetector 120 is used to receive the detection light beam Os and collect the detection light intensity signal Is of the detection light beam Os, where the detection light beam Os is the light beam after the reference light beam Or passes through the coal-water mixture 300 in the coal-water mixture transportation pipeline 200; the processing module 130 is used to receive the detection light intensity signal Is and compensate the detection light intensity signal Is to obtain the target detection light intensity signal Is’, and determine the concentration p of coal particles in the coal-water mixture according to the reference light intensity signal Ir of the reference light beam Or and the target detection light intensity signal Is’.

Exemplarily, the light source module 110 can be directly fixed on the pipe wall of the coal-water mixture transport pipeline 200, and the light emitting surface of the light source module 110 faces away from the pipe wall to which the light source module 110 is fixed. A protective cover is arranged around the light source module 110, and the protective cover can seal the light source module 110 on the pipe wall. The side of the protective cover facing the light emitting surface can transmit light, so that the detection light beam Os output by the light source module 110 can irradiate the coal-water mixture 300 in the coal-water mixture transport pipeline 200.

Alternatively, a groove may be provided on the wall of the coal-water mixture transport pipeline 200, and the light source module 110 may be fixed in the groove, with the light emitting surface of the light source module 110 facing away from the bottom of the groove, as shown in FIG1. A protective cover is provided on the top of the groove to seal the light source module 110 in the groove, and the side of the protective cover facing the light emitting surface can transmit light, so that the detection light beam Os output by the light source module 110 can irradiate the coal-water mixture 300 in the coal-water mixture transport pipeline 200.

Alternatively, a through hole may be provided in the pipe wall of the coal-water mixture transport pipeline 200, and the light source module 110 may be fixed in the through hole, with the light emitting surface of the light source module 110 facing the inside of the coal-water mixture transport pipeline 200. A transparent protective cover is provided in the through hole to block the light source module 110 from the coal-water mixture, while allowing the detection light beam Os output by the light source module 110 to irradiate the coal-water mixture 300 in the coal-water mixture transport pipeline 200.

For example, FIG2 is a schematic diagram of the structure of another solid concentration detection system for coal-water mixture provided in this embodiment. As shown in FIG2, the light source module 110 includes a light source 111 and a collimator 112, and the light source 111 and the collimator 112 are coaxially arranged. For example, the light source 111 is one or more of a near-infrared halogen tungsten lamp, a near-infrared laser, and a laser of other wavelengths, and the collimator is a convex lens.

The light source 111 can continuously output a light source beam O with a fixed wavelength and intensity, that is, the light source 111 can output a stable light source beam O. The light source beam O can be directly irradiated to the collimator 112, and the collimator 112 collimates the received light source beam O to reduce the divergence angle of the light source beam O to obtain a collimated beam Oc. The light source beam O can also be irradiated to the collimator 112 after other shaping processes, and the collimator 112 collimates the received shaped light source beam O to reduce the divergence angle of the beam to obtain a collimated beam Oc. In this way, the collimator 112 can output a stable collimated beam Oc, and the wavelength of the collimated beam Oc is the same as the wavelength of the light source beam O, and the intensity of the collimated beam Oc is slightly lower than the intensity of the light source beam O.

The light source module 110 can output the collimated light beam Oc as the reference light beam Or, and can also perform other types of shaping on the collimated light beam Oc to obtain the reference light beam Or and output it, so as to obtain a stable reference light beam Or, and irradiate the reference light beam Or to the coal-water mixture 300 in the coal-water mixture transportation pipeline. Among them, the wavelength of the reference light beam Or is the same as the wavelength of the light source light beam O, the divergence angle of the reference light beam Or is smaller than the divergence angle of the light source light beam O, and the intensity of the reference light beam Or is slightly lower than the intensity of the light source light beam O. After the reference light beam Or passes through the coal-water mixture 300 in the coal-water mixture transportation pipeline, the reference light beam Or is attenuated when it is transmitted in the coal-water mixture 300 because the coal-water mixture 300 scatters and absorbs the reference light beam Or. The light beam emitted after passing through the coal-water mixture 300 is the attenuated reference light beam, that is, the detection light beam Os. In this way, a stable detection light beam Os can be obtained, the wavelength of the detection light beam Os is equal to the wavelength of the reference light beam Or, and the intensity of the detection light beam Os is lower than the intensity of the reference light beam Or.

Exemplarily, the first photodetector 120 can be directly fixed on the tube wall opposite to the tube wall where the light source module 110 is located, the light receiving surface of the first photodetector 120 faces away from the tube wall to which the first photodetector 120 is fixed, and the optical axis of the light source module 110 coincides with the optical axis of the first photodetector 120. A protective cover is arranged around the first photodetector 120, and the protective cover can seal the first photodetector 120 on the tube wall, and the side of the protective cover facing the light receiving surface can be light-transmissive, so that the first photodetector 120 can receive the detection light beam Os emitted by the coal-water mixture 300.

Alternatively, a groove may be provided on the tube wall directly opposite to the tube wall where the light source module 110 is located, and the first photodetector 120 may be fixed in the groove, with the light receiving surface of the first photodetector 120 facing away from the bottom of the groove, as shown in FIG1 , and the optical axis of the light source module 110 coincides with the optical axis of the first photodetector 120. A protective cover is provided on the top of the groove to seal the first photodetector 120 in the groove, and the side of the protective cover facing the light receiving surface is light-permeable, so that the first photodetector 120 can receive the detection light beam Os emitted by the coal-water mixture 300.

Alternatively, a through hole may be provided on the pipe wall directly opposite to the pipe wall where the light source module 110 is located, and the first photodetector 120 may be fixed in the through hole, with the light receiving surface of the first photodetector 120 facing the interior of the coal-water mixture transport pipe, and the optical axis of the light source module 110 coincides with the optical axis of the first photodetector 120. A transparent protective cover is provided in the through hole to block the first photodetector 120 from the coal-water mixture, while allowing the first photodetector 120 to receive the detection light beam Os emitted by the coal-water mixture.

Exemplarily, the first photodetector 120 may be an avalanche photodiode APD detector or other types of high-sensitivity photodetectors. The spectral response range of the first photodetector 120 is adapted to the wavelength of the light source beam O, that is, the wavelength of the light source beam O is within the spectral response range of the first photodetector 120. At this time, the first photodetector 120 can receive the detection beam Os, and convert the intensity of the detection beam Os into an electrical signal output to obtain a stable detection light intensity signal Is.

The processing module 130 can receive the detection light intensity signal Is output by the first photodetector 120, that is, the light intensity signal that has passed through the coal-water mixture 300, and amplify and filter the detection light intensity signal Is to obtain the target detection light intensity signal Is'. The processing module 130 can also obtain the light intensity signal that has not passed through the coal-water mixture 300, that is, the reference light intensity signal Ir of the reference beam Or.

The processing module 130 is provided with a plurality of light intensity-solid concentration relationship equations p=f(Is’), each of which corresponds to a different wavelength, and all of which can characterize that the target detection light intensity signal Is is negatively correlated with the concentration p of coal particles in the coal-water mixture, that is, the degree of attenuation of the reference light beam Or is positively correlated with the concentration p of coal particles in the coal-water mixture. Substitute the reference light intensity signal Ir and the target detection light intensity signal Is’ into the light intensity-solid concentration relationship equation p=f_λ(Is’) corresponding to the wavelength λ of the reference light intensity signal Ir to obtain the concentration p of coal particles in the coal-water mixture. By compensating the detection light intensity signal Is, the detection light intensity signal Is is made more accurate, thereby improving the accuracy of the detection result.

In the disclosed embodiment, the solid concentration detection system of the coal-water mixture includes: a light source module, which is arranged on the first side wall of the coal-water mixture transportation pipeline, and the light emitting surface of the light source module faces away from the first side wall; a first photoelectric detector, which is arranged on the second side wall of the coal-water mixture transportation pipeline, and the first photoelectric detector is coaxially arranged with the light source module, and the light receiving surface of the first photoelectric detector faces away from the second side wall, and the second side wall faces the first side wall; a processing module, which is connected to the output end of the first photoelectric detector. The light source module can continuously output a reference beam with a fixed wavelength and intensity, the first photoelectric detector can receive the detection beam, and collect the detection light intensity signal of the detection beam, the detection beam is the reference beam after passing through the coal-water mixture in the coal-water mixture transportation pipeline, the processing module can receive the detection light intensity signal, and compensate the detection light intensity signal to obtain the target detection light intensity signal, and determine the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference beam and the target detection light intensity signal, so as to realize the optical detection of the solid concentration of the coal-water mixture, thereby improving the efficiency and applicability of the solid concentration detection. In addition, since the light source module can output a stable light source beam, a stable detection light intensity signal can be obtained, thereby improving the stability of the detection result. By compensating the detection light intensity signal through the processing module, the accuracy of the detection light intensity signal can be improved, thereby improving the accuracy of the detection result.

In some embodiments, FIG3 is a schematic diagram of the structure of another coal-water mixture solid concentration detection system provided in this embodiment. As shown in FIG3, the light source module 110 further includes: a spectroscope 113, wherein the spectroscope 113 is located at the light emitting side of the collimator 112 and is coaxially arranged with the light source 111. The coal-water mixture solid concentration detection system 100 further includes: a second photodetector 140, wherein the second photodetector 140 is located at one side of the reflected light emitting surface of the spectroscope 113 and is coaxially arranged with the spectroscope 113, and the output end of the second photodetector 140 is connected to the processing module 130.

The beam splitter 113 is used to split the collimated beam Oc into two reference beams Or of equal intensity, wherein one reference beam Or is output through the transmitted light emitting surface, and the other reference beam Or is output through the reflected light emitting surface. The second photodetector 140 is used to receive the reference beam Or and collect the reference light intensity signal Ir.

Exemplarily, the beam splitter 113 is a 50/50 beam splitter, which can split the collimated light beam Oc into two reference beams Or in equal proportion, that is, the intensities of the two reference beams Or are equal. One reference beam Or is transmitted by the beam splitter 113 and irradiates the coal-water mixture 300 in the coal-water mixture transportation pipeline through the transmitted light emitting surface, and the other reference beam Or is reflected by the beam splitter 113 and irradiates the light receiving surface of the second photodetector 140 through the reflected light emitting surface.

The second photodetector 140 and the first photodetector 120 are photodetectors of the same specification, and the second photodetector 140 can receive the reference beam Or and convert the intensity of the reference beam Or into an electrical signal output to obtain a stable reference light intensity signal Ir. In this way, the processing module 130 can obtain the reference light intensity signal Ir.

In some embodiments, as shown in FIG. 2 , the light source module 110 further includes a light source control unit 114 , wherein the light source control unit 114 is connected to the light source 111 , and the processing module 130 is connected to the light source control unit 114 .

The light source control unit 114 is used to control the light source 111 to output the light source light beam O according to the light source control signal. The processing module 130 is also used to determine the reference light intensity signal Ir according to the light source control signal.

Exemplarily, in response to the user's start-up operation, the light source control unit 114 generates a light source control signal, and under the action of the light source control signal, controls the light source 111 to output the light source light beam O. A reference light intensity signal Ir is preset inside the processing module 130, and the reference light intensity signal Ir can be measured before detection, or can be obtained based on the specification of the light source 111. When the light source 111 outputs the light source light beam O, the processing module 130 receives the light source control signal sent by the light source control unit 1144, and triggers the acquisition of the reference light intensity signal Ir preset inside it.

In some embodiments, the light source 111 includes a plurality of fixed light sources, each of which outputs a light source beam having a different wavelength and/or intensity. The light source 111 can output light source beams O having different wavelengths and/or intensities based on different fixed light sources. In response to different startup operations of the user, the light source control unit 114 can generate different light source control signals, thereby controlling different fixed light sources 111 to output light source beams O. In this way, the light source module 110 can output reference beams Or having different wavelengths and/or intensities, thereby obtaining detection beams Os having different wavelengths and/or intensities.

Exemplarily, the light source 111 includes a first fixed light source and a second fixed light source, and the first fixed light source and the second fixed light source are arranged on a plane perpendicular to the optical axis. In response to the user's first startup operation, the light source control unit 114 generates a first light source control signal to control the first fixed light source to output a first light source beam O1, then the light source module 110 outputs a first reference beam Or1 of a first wavelength λ1 and a first intensity I1, and the first photodetector 120 receives the first detection beam Os1. In response to the user's second startup operation, the light source control unit 114 generates a second light source control signal to control the second fixed light source to output a second light source beam O2, then the light source module 110 outputs a second reference beam Or2 of a second wavelength λ2 and a second intensity I2, and the first photodetector 120 receives the second detection beam Os2. Wherein, the wavelength and/or intensity of the first light source beam O1 and the second light source beam O2 are different.

If the first photodetector 120 receives the first detection light beam Os1, the first photodetector 120 can collect the first detection light intensity signal Is1. At this time, the processing module 130 can receive the first detection light intensity signal Is1, and amplify, filter, perform at least one of temperature compensation and humidity compensation on the first detection light intensity signal Is1 to obtain the first target detection light intensity signal Is1’. If the first photodetector 120 receives the second detection light beam Os2, the first photodetector 120 can collect the second detection light intensity signal Is2. At this time, the processing module 130 can receive the second detection light intensity signal Is2, and perform at least one of amplification, filtering, temperature compensation and humidity compensation on the second detection light intensity signal Is2 to obtain the second target detection light intensity signal Is2’. In this way, through the user inputting the first start-up operation and the second start-up operation, the processing module 130 can receive the first detection light intensity signal Is1 and the second detection light intensity signal Is2, thereby obtaining the first target detection light intensity signal Is1’ and the second target detection light intensity signal Is2’.

If the wavelength of the first light source beam O1 is the same as the wavelength of the second light source beam O2, and the intensity of the first light source beam O1 is different from the intensity of the second light source beam O2, that is, λ1＝λ2 and I1≠I2, then the first reference light intensity signal Ir1 of the first reference beam Or1 is different from the second reference light intensity signal Ir2 of the second reference beam Or2. Substituting the first target detection light intensity signal Is1’ and the first reference light intensity signal Ir1 into the light intensity solid concentration relationship p＝f_λ1(Is’) corresponding to λ1, the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the second target detection light intensity signal Is2’ and the second reference light intensity signal Ir2 into p＝f_λ1(Is’), the second calculated concentration p2 of the coal particles in the coal-water mixture can be obtained. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

If the wavelength of the first light source beam O1 is different from the wavelength of the second light source beam O2, and the intensity of the first light source beam O1 is the same as the intensity of the second light source beam O2, that is, I1=I2 and λ1≠λ2, then the first reference light intensity signal Ir1 is the same as the second reference light intensity signal Ir2. Substituting the first target detection light intensity signal Is1’ and the first reference light intensity signal Ir1 into p=f_λ1(Is’), the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the second target detection light intensity signal Is2’ and the first reference light intensity signal Ir1 into the light intensity solid concentration relationship p=f_λ2(Is’) corresponding to λ2, the second calculated concentration p2 of the coal particles in the coal-water mixture can be obtained. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

If the wavelength of the first light source beam O1 is different from the wavelength of the second light source beam O2, and the intensity of the first light source beam O1 is different from the intensity of the second light source beam O2, that is, λ1≠λ2 and I1≠I2, then the first reference light intensity signal Ir1 and the second reference light intensity signal Ir2 are different. Substituting the first target detection light intensity signal Is1’ and the first reference light intensity signal Ir1 into p=f_λ1(Is’), the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the second target detection light intensity signal Is2’ and the second reference light intensity signal Ir2 into p=f_λ2(Is’), the second calculated concentration p2 of the coal particles in the coal-water mixture can be obtained. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

In other embodiments, the number of fixed light sources in the light source 111 is three or more, and all the fixed light sources 111 are arranged on a plane perpendicular to the optical axis. Accordingly, the number of start-up operations is three or more, and the processing module 130 can receive three or more detection light intensity signals Is, thereby obtaining three or more target detection light intensity signals Is'.

In summary, the light source module 110 can output multiple reference beams Or, each of which has a different wavelength and/or intensity. The first photodetector 120 can receive multiple detection beams Os, thereby collecting multiple detection light intensity signals Is, so that the processing module 130 receives multiple detection light intensity signals Is. The processing module 130 can compensate for the multiple received detection light intensity signals Is respectively to obtain multiple target detection light intensity signals Is’, and determine the concentration p of coal particles in the coal-water mixture based on the multiple target detection light intensity signals Is’ and the corresponding reference light intensity signals Ir.

In some embodiments, the light source 111 is an adjustable light source, and the wavelength and/or intensity of the light source beam O output by the adjustable light source is adjustable, so the light source 111 can output multiple light source beams O with different wavelengths and/or intensities. In response to different startup operations of the user, the light source control unit 114 can generate different light source control signals, so that the adjustable light source outputs light source beams O with different wavelengths and/or intensities. In this way, the light source module 110 can output reference beams Or with different wavelengths and/or intensities, thereby obtaining detection beams Os with different wavelengths and/or intensities.

Exemplarily, in response to the user's third start-up operation, the light source control unit 114 generates a third light source control signal to control the adjustable light source to output the third light source beam O3, then the light source module 110 outputs a third reference beam Or3 of a third wavelength λ3 and a third intensity I3, and the first photodetector 120 receives the third detection beam Os3. In response to the user's fourth start-up operation, the light source control unit 114 generates a fourth light source control signal to control the adjustable light source to output a fourth light source beam O4, then the light source module 110 outputs a fourth reference beam Or4 of a fourth wavelength λ4 and a fourth intensity I4, and the first photodetector 120 receives the fourth detection beam Os4.

If the first photodetector 120 receives the third detection light beam Os3, the first photodetector 120 can collect the third detection light intensity signal Is3. At this time, the processing module 130 can receive the third detection light intensity signal Is3, and amplify, filter, perform at least one of temperature compensation and humidity compensation on the third detection light intensity signal Is3 to obtain the third target detection light intensity signal Is3’. If the first photodetector 120 receives the fourth detection light beam Os4, the first photodetector 120 can collect the fourth detection light intensity signal Is4. At this time, the processing module 130 can receive the fourth detection light intensity signal Is4, and perform at least one of amplification, filtering, temperature compensation and humidity compensation on the fourth detection light intensity signal Is4 to obtain the fourth target detection light intensity signal Is4’. In this way, through the user inputting the third start-up operation and the fourth start-up operation, the processing module 130 can receive the third detection light intensity signal Is3 and the fourth detection light intensity signal Is4, thereby obtaining the third target detection light intensity signal Is3’ and the fourth target detection light intensity signal Is4’.

If the intensity of the adjustable light source is adjustable, the wavelength of the third light source beam O3 is the same as the wavelength of the fourth light source beam O4, and the intensity of the third light source beam O3 is different from the intensity of the fourth light source beam O4, that is, λ3＝λ4 and I3≠I4, then the third reference light intensity signal Ir3 of the third reference beam Or3 is different from the fourth reference light intensity signal Ir4 of the fourth reference beam Or4. Substituting the third target detection light intensity signal Is3’ and the third reference light intensity signal Ir3 into the light intensity solid concentration relationship p＝f_λ3(Is’) corresponding to λ3, the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the fourth target detection light intensity signal Is4’ and the fourth reference light intensity signal Ir4 into p＝f_λ3(Is’) can obtain the second calculated concentration p2 of the coal particles in the coal-water mixture. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

If the wavelength of the adjustable light source is adjustable, the wavelength of the third light source beam O3 is different from the wavelength of the fourth light source beam O4, and the intensity of the third light source beam O3 is the same as the intensity of the fourth light source beam O4, that is, λ3≠λ4 and I3＝I4, then the third reference light intensity signal Ir3 is the same as the fourth reference light intensity signal Ir4. Substituting the third target detection light intensity signal Is3’ and the third reference light intensity signal Ir3 into p＝f_λ3(Is’), the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the fourth target detection light intensity signal Is4’ and the third reference light intensity signal Ir3 into the light intensity solid concentration relationship p＝f_λ4(Is’) corresponding to λ4, the second calculated concentration p2 of the coal particles in the coal-water mixture can be obtained. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

If the intensity and wavelength of the adjustable light source are both adjustable, the wavelength of the third light source beam O3 is different from the wavelength of the fourth light source beam O4, and the intensity of the third light source beam O3 is different from the intensity of the fourth light source beam O4, that is, λ3≠λ4 and I3≠I4, then the third reference light intensity signal Ir3 and the fourth reference light intensity signal Ir4 are different. Substituting the third target detection light intensity signal Is3’ and the third reference light intensity signal Ir3 into p=f_λ3(Is’), the first calculated concentration p1 of the coal particles in the coal-water mixture can be obtained. Substituting the fourth target detection light intensity signal Is4’ and the fourth reference light intensity signal Ir4 into p=f_λ4(Is’), the second calculated concentration p2 of the coal particles in the coal-water mixture can be obtained. Calculate the average concentration (p1+p2)/2 of the first calculated concentration p1 and the second calculated concentration p2, and output the average concentration (p1+p2)/2 as the concentration p of the coal particles in the coal-water mixture.

In other embodiments, the adjustable light source can output three or more light source beams O. Correspondingly, the number of start-up operations is three or more. The processing module 130 receives three or more detection light intensity signals Is, thereby obtaining three or more target detection light intensity signals Is’.

In summary, the light source module 110 can output multiple reference beams Or, each of which has a different wavelength and/or intensity. The first photodetector 120 can receive multiple detection beams Os, thereby collecting multiple detection light intensity signals Is, so that the processing module 130 can receive multiple detection light intensity signals Is. The processing module 130 can compensate for the multiple received detection light intensity signals Is respectively to obtain multiple target detection light intensity signals Is’, and determine the concentration p of coal particles in the coal-water mixture based on the multiple target detection light intensity signals Is’ and the corresponding reference light intensity signals Ir.

In some embodiments, when the light source module 110 outputs the first reference beam Or1, the second photodetector 140 can collect the first reference light intensity signal Ir1, and the processing module 130 can receive the first reference light intensity signal Ir1 and the first detection light intensity signal Is1. When the light source module 110 outputs the second reference beam Or2, the second photodetector 140 can collect the second reference light intensity signal Ir2, and the processing module 130 can receive the second reference light intensity signal Ir2 and the second detection light intensity signal Is2. When the light source module 110 outputs the third reference beam Or3, the second photodetector 140 can collect the third reference light intensity signal Ir3, and the processing module 130 can receive the third reference light intensity signal Ir3 and the third detection light intensity signal Is3. When the light source module 110 outputs the fourth reference beam Or4, the second photodetector 140 can collect the fourth reference light intensity signal Ir4, and the processing module 130 can receive the fourth reference light intensity signal Ir4 and the fourth detection light intensity signal Is4.

In this way, when the light source module 110 outputs a plurality of reference light beams Or, the processing module 130 receives a plurality of detection light intensity signals Is, and simultaneously receives a reference light intensity signal Ir corresponding to each detection light intensity signal Is sent by the second photodetector 140 .

In some embodiments, when the light source module 110 outputs the first reference beam Or1, the light source control unit 114 sends a first light source control signal, the processing module 130 can receive the first detection light intensity signal Is1 and the first light source control signal, and obtain the first reference light intensity signal Ir1 based on the first light source control signal. When the light source module 110 outputs the second reference beam Or2, the light source control unit 114 sends a second light source control signal, the processing module 130 can receive the second detection light intensity signal Is2 and the second light source control signal, and obtain the second reference light intensity signal Ir2 based on the second light source control signal. When the light source module 110 outputs the third reference beam Or3, the light source control unit 114 sends a third light source control signal, the processing module 130 can receive the third detection light intensity signal Is3 and the third light source control signal, and obtain the third reference light intensity signal Ir3 based on the third light source control signal. When the light source module 110 outputs the fourth reference beam Or4, the light source control unit 114 sends a fourth light source control signal, the processing module 130 can receive the fourth detection light intensity signal and the fourth light source control signal, and obtain the fourth reference light intensity signal Ir4 based on the fourth light source control signal.

In this way, when the light source module 110 outputs multiple reference beams Or, the processing module 130 receives multiple detection light intensity signals Is, and at the same time obtains the reference light intensity signal Ir corresponding to each detection light intensity signal Is according to the light source control signal corresponding to each detection light intensity signal Is sent by the light source control unit 114.

In some embodiments, FIG4 is a schematic diagram of the structure of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure. As shown in FIG4 , the coal-water mixture solid concentration detection system 100 further includes an environment detection module 150. The environment detection module 150 is disposed in the coal-water mixture transport pipeline 200, and the output end of the environment detection module 150 is connected to the processing module 130.

Exemplarily, the environment detection module 150 may include a temperature sensor, which is fixed to the inner wall of the coal-water mixture transport pipeline 200, and the sensing surface of the temperature sensor may contact the coal-water mixture 300, thereby collecting temperature information in the coal-water mixture transport pipeline 200. Alternatively, the environment detection module 150 may include a humidity sensor, which is fixed to the inner wall of the coal-water mixture transport pipeline 200, and the sensing surface of the humidity sensor may contact the coal-water mixture 300, thereby collecting humidity information in the coal-water mixture transport pipeline 200. Alternatively, the environment detection module 150 may include a temperature sensor and a humidity sensor, which are fixed to the inner wall of the coal-water mixture transport pipeline 200, and the sensing surfaces of the temperature sensor and the humidity sensor may contact the coal-water mixture 300, thereby collecting temperature information and humidity information in the coal-water mixture transport pipeline 200.

In this way, the environment detection module 150 can collect the environment information in the coal-water mixture transportation pipeline 200, and the environment information includes temperature information and/or humidity information.

If the environment detection module 150 sends temperature information, the processing module 130 receives the temperature information. The processing module 130 can compensate the detection light intensity signal Is according to the temperature information to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can compensate the detection light intensity signal Is according to the temperature information, amplify and/or filter the compensated detection light intensity signal Is to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can amplify and/or filter the detection light intensity signal Is, compensate the processed detection light intensity signal Is according to the temperature information, and obtain the target detection light intensity signal Is’.

If the environment detection module 150 sends humidity information, the processing module 130 receives the humidity information. The processing module 130 can compensate the detection light intensity signal Is according to the humidity information to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can compensate the detection light intensity signal Is according to the humidity information, amplify and/or filter the compensated detection light intensity signal Is to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can amplify and/or filter the detection light intensity signal Is, compensate the processed detection light intensity signal Is according to the humidity information to obtain the target detection light intensity signal Is’.

If the environment detection module 150 sends temperature information and humidity information, the processing module 130 receives the temperature information and humidity information. The processing module 130 can compensate the detection light intensity signal Is according to the temperature information and humidity information to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can compensate the detection light intensity signal Is according to the temperature information and humidity information, amplify and/or filter the compensated detection light intensity signal Is to obtain the target detection light intensity signal Is’. Alternatively, the processing module 130 can amplify and/or filter the detection light intensity signal Is, compensate the processed detection light intensity signal Is according to the temperature information and humidity information to obtain the target detection light intensity signal Is’.

In this way, the processing module 130 can receive the environmental information sent by the environmental detection module 150, and compensate the detection light intensity signal Is according to the environmental information to obtain the target detection light intensity signal Is'. The influence of temperature and/or humidity on the detection light intensity signal Is can be reduced, and the accuracy of the detection light intensity signal Is can be improved, thereby improving the accuracy of the solid concentration detection result.

In some embodiments, Figure 5 is a structural schematic diagram of another coal-water mixture solid concentration detection system provided in an embodiment of the present disclosure. As shown in Figure 5, the coal-water mixture solid concentration detection system 100 also includes a monitoring device 160, and the monitoring device 160 is connected to the output end of the processing module 130.

Exemplarily, the monitoring device 160 may be a remote device, and the processing module 130 is wirelessly connected to the monitoring device 160. The processing module 130 may send the concentration p of the coal particles in the coal-water mixture to the monitoring device 160, and the monitoring device 160 may display the concentration p of the coal particles in the coal-water mixture in real time, thereby achieving the purpose of real-time monitoring of the concentration of the coal particles in the coal-water mixture. In addition, remote monitoring may also be achieved.

The embodiments of the present disclosure further provide a method for detecting the solid concentration of a coal-water mixture, which is applied to the system 100 for detecting the solid concentration of a coal-water mixture provided in any of the above embodiments.

FIG6 is a flow chart of a method for detecting the solid concentration of a coal-water mixture provided by an embodiment of the present disclosure. As shown in FIG6 , the specific steps of the method for detecting the solid concentration of a coal-water mixture include:

S101, receiving a detection light intensity signal of a detection light beam.

The detection beam is the beam obtained after the reference beam passes through the coal-water mixture in the coal-water mixture transportation pipeline, and the reference beam is the beam with fixed wavelength and intensity output by the light source module.

Exemplarily, the light source module outputs a reference beam Or, and the reference beam Or attenuates into a detection beam Os after passing through the coal-water mixture in the coal-water mixture transport pipeline. The first photodetector can receive the detection beam Os and collect a detection light intensity signal Is of the detection beam Os, so that the processing module can receive the detection light intensity signal Is.

If the light source module outputs a reference beam Or, the processing module can receive a detection light intensity signal Is. If the light source module can output multiple reference beams Or, each reference beam Or has a different wavelength and/or intensity, the processing module can receive multiple detection light intensity signals Is.

S102, compensating the detection light intensity signal to obtain a target detection light intensity signal.

Exemplarily, if the processing module receives a detection light intensity signal Is, the detection light intensity signal Is may be amplified, filtered, compensated for humidity, and compensated for temperature to obtain a target detection light intensity signal Is'. If the processing module receives multiple detection light intensity signals Is, the multiple detection light intensity signals Is may be respectively amplified, filtered, compensated for humidity, and compensated for temperature to obtain multiple target detection light intensity signals Is'.

The detected light intensity signal Is can be understood as the light intensity signal passing through the coal-water mixture. Therefore, compensating the detected light intensity signal Is can avoid the influence of photoelectric conversion, noise, temperature and humidity on the detected light intensity signal Is as much as possible, and can improve the accuracy of the detected light intensity signal Is.

S103, determining the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference light beam and the target detection light intensity signal.

Exemplarily, a plurality of light intensity-solid concentration relationship equations p=f(Is’) are provided in the processing module, each light intensity-solid concentration relationship equation p=f(Is’) corresponds to a different wavelength, and all light intensity-solid concentration relationship equations p=f(Is’) can characterize that the target detection light intensity signal Is is negatively correlated with the concentration p of coal particles in the coal-water mixture, that is, the degree of attenuation of the reference light beam Or is positively correlated with the concentration p of coal particles in the coal-water mixture.

If the processing module receives a detection light intensity signal Is, the processing module can obtain a reference light intensity signal Ir corresponding to the detection light intensity signal Is. Then, the reference light intensity signal Ir corresponding to the detection light intensity signal Is is substituted into the light intensity solid concentration relationship p=f_λ(Is') corresponding to the wavelength λ of the reference light intensity signal Ir to obtain the concentration p of coal particles in the coal-water mixture.

If the processing module receives multiple detection light intensity signals Is, the processing module can obtain the reference light intensity signals Ir corresponding to each of the multiple detection light intensity signals Is. Then, the reference light intensity signal Ir corresponding to each detection light intensity signal Is is substituted into the light intensity solid concentration relationship p=f_λ(Is’) corresponding to the wavelength λ of the reference light intensity signal Ir to obtain multiple calculated concentrations. The average value of the multiple calculated concentrations can be used as the concentration p of the coal particles in the coal-water mixture, and the calculated concentration that appears the most times among the multiple calculated concentrations can also be used as the concentration p of the coal particles in the coal-water mixture.

In the disclosed embodiment, by receiving the detection light intensity signal of the detection light beam, wherein the detection light beam is the light beam after the reference light beam passes through the coal-water mixture in the coal-water mixture transport pipeline, and the reference light beam is the light beam with fixed wavelength and intensity output by the light source module, the detection light intensity signal is compensated to obtain the target detection light intensity signal, and the concentration of coal particles in the coal-water mixture is determined according to the reference light intensity signal of the reference light beam and the target detection light intensity signal, so that the optical detection of the solid concentration of the coal-water mixture can be achieved, thereby improving the efficiency and applicability of the solid concentration detection. In addition, by compensating the compensation detection light intensity signal, the accuracy of the detection light intensity signal can be improved, thereby improving the accuracy of the concentration detection result.

Unless the context clearly indicates otherwise, the singular form of the words used herein and in the appended claims includes the plural and vice versa. Thus, when referring to the singular, the plural form of the corresponding term is generally included. Similarly, the words "comprise" and "include" are to be interpreted as inclusive rather than exclusive. Likewise, the terms "include" and "or" should be interpreted as inclusive unless such interpretation is expressly prohibited herein. Where the term "example" is used herein, particularly when it is located after a group of terms, the "example" is merely exemplary and illustrative and should not be considered exclusive or comprehensive.

Further aspects and scopes of adaptability become apparent from the description provided herein. It should be understood that various aspects of the present application can be implemented individually or in combination with one or more other aspects. It should also be understood that the description and specific embodiments herein are intended for purposes of illustration only and are not intended to limit the scope of the present application.

Several embodiments of the present disclosure are described in detail above, but it is obvious that those skilled in the art can make various modifications and variations to the embodiments of the present disclosure without departing from the spirit and scope of the present disclosure. The protection scope of the present disclosure is defined by the attached claims.

Claims (10)

1. A solids concentration detection system for a coal water mixture, comprising:

The light source module is arranged on the first side pipe wall of the coal-water mixture transportation pipeline, and the light emitting surface of the light source module faces away from the first side pipe wall; the light source module is used for continuously outputting a reference beam with fixed wavelength and intensity;

The first photoelectric detector is arranged on the second side pipe wall of the coal-water mixture transportation pipeline, the first photoelectric detector and the light source module are coaxially arranged, the light receiving surface of the first photoelectric detector faces away from the second side pipe wall, and the second side pipe wall faces against the first side pipe wall; the first photoelectric detector is used for receiving a detection light beam and collecting a detection light intensity signal of the detection light beam, wherein the detection light beam is a light beam after the reference light beam passes through the coal-water mixture in the coal-water mixture transportation pipeline;

The processing module is connected with the output end of the first photoelectric detector; the processing module is used for receiving the detection light intensity signal, compensating the detection light intensity signal to obtain a target detection light intensity signal, and determining the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference light beam and the target detection light intensity signal.

2. The solids concentration detection system of claim 1, wherein the light source module comprises:

a light source for outputting a light source beam;

A collimator coaxially arranged with the light source; the collimator is used for receiving the light source beam and collimating the light source beam.

3. The solids concentration detection system of claim 2, wherein the light source module further comprises:

A spectroscope which is positioned on the light-emitting side of the collimator and is coaxially arranged with the light source; the spectroscope is used for dividing the collimated light beam into two paths of reference light beams with equal intensity, wherein one path of reference light beam is output through the transmission light emergent surface, and the other path of reference light beam is output through the reflection light emergent surface;

the solid concentration detection system further includes:

The second photoelectric detector is positioned on one side of the light-emitting surface of the spectroscope and is coaxially arranged with the spectroscope, and the output end of the second photoelectric detector is connected with the processing module; the second photodetector is used for receiving the reference light beam and collecting the reference light intensity signal.

4. The solids concentration detection system of claim 2, wherein the light source module further comprises:

The light source control unit is connected with the light source; the light source control unit is used for controlling the light source to output the light source beam according to a light source control signal;

The processing module is connected with the light source control unit and is also used for determining the reference light intensity signal according to the light source control signal.

5. The solids concentration detection system of claim 2, wherein the light source comprises a plurality of fixed light sources, each of the fixed light sources outputting a different wavelength and/or intensity of the light source beam;

The light source module is further used for outputting a plurality of reference beams, and the wavelength and/or intensity of each reference beam are/is different;

The first photodetector is further configured to receive a plurality of the detection light beams and collect a plurality of the detection light intensity signals.

6. The solids concentration detection system of claim 2, wherein the light source is an adjustable light source, the plurality of light source beams output by the adjustable light source being different in wavelength and/or intensity;

The light source module is further used for outputting a plurality of reference beams, and the wavelength and/or intensity of each reference beam are/is different;

The first photodetector is further configured to receive a plurality of the detection light beams and collect a plurality of the detection light intensity signals.

7. The solids concentration detection system of claim 5 or 6, wherein the processing module is further configured to receive a plurality of the detected light intensity signals, compensate the plurality of detected light intensity signals to obtain a plurality of target detected light intensity signals, and determine the concentration of the coal particles in the coal-water mixture according to the plurality of target detected light intensity signals and the respective reference light intensity signals.

8. The solids concentration detection system of any of claims 1-6, further comprising:

the environment detection module is arranged in the coal-water mixture transportation pipeline, and the output end of the environment detection module is connected with the processing module; the environment detection module is used for collecting environment information in the coal-water mixture transportation pipeline, and the environment information comprises temperature information and/or humidity information;

The processing module is further used for compensating the detection light intensity signal according to the environmental information to obtain the target detection light intensity signal.

9. The solids concentration detection system of any of claims 1-6, further comprising:

The monitoring equipment is connected with the output end of the processing module; the monitoring device is used for monitoring the concentration of coal particles in the coal-water mixture in real time.

10. A method for detecting the solid concentration of a coal-water mixture, which is characterized by being applied to the solid concentration detection system according to any one of claims 1 to 9; the method comprises the following steps:

Receiving a detection light intensity signal of a detection light beam, wherein the detection light beam is a light beam obtained after a reference light beam passes through the coal-water mixture in the coal-water mixture transportation pipeline, and the reference light beam is a light beam with fixed wavelength and intensity output by a light source module;

Compensating the detected light intensity signal to obtain a target detected light intensity signal;

And determining the concentration of coal particles in the coal-water mixture according to the reference light intensity signal of the reference light beam and the target detection light intensity signal.