Top-blown furnace dust concentration detection method based on the combination of light absorption and light reflection methods

Abstract

The present application discloses a method for detecting dust concentration in a top-blown furnace based on a combination of light absorption and light reflection methods, which belongs to the field of dust concentration detection, wherein the detection method includes: controlling a sensor to emit incident light to a preset position of the top-blown furnace, and receiving reflected light after the incident light is reflected and passes through dust; determining the signal intensity corresponding to the reflected light; inputting the signal intensity into a dust concentration function expression to determine the dust concentration of the top-blown furnace. The present application provides a new dust concentration function expression, which only requires determining the signal intensity corresponding to the reflected light to calculate the dust concentration without arranging a sensor inside the top-blown furnace. The application is suitable for top-blown furnaces working in high-temperature environments, and can improve the breadth and applicability of dust concentration detection.

Description

Technical Field

[0001] The present application relates to the field of dust concentration detection, and in particular to a method for detecting dust concentration in a top-blown furnace based on a combination of a light absorption method and a light reflection method. Background Art

[0002] Dust concentration detection is an important part of industrial production and environmental monitoring. In various industrial production processes, dust is a common pollutant, and its concentration directly or indirectly affects the health of workers, production safety, and the efficiency of industrial production. Long-term inhalation of high concentrations of dust can lead to lung diseases, such as pneumoconiosis and asthma, which can cause serious harm to the human body. Excessive dust concentration can also affect the entire industrial production process, especially in metallurgy, where dust can affect the purity of metals. Therefore, it is of great significance to detect dust concentration.

[0003] At present, the more popular dust concentration detection methods include: filter membrane weighing method, light absorption method, MIE scattering method (MieScattering Method), charge induction method, etc. Among them, the filter membrane weighing method samples the particulate matter in the air and deposits it on a pre-prepared filter membrane, then weighs the filter membrane, and calculates the mass concentration of the particulate matter based on the mass change of the filter membrane. The advantages of the filter membrane weighing method are simple operation and high accuracy, but the sampling process may be affected by environmental factors such as humidity and temperature. The light absorption method is based on the absorption of light by particles, and determines the concentration of particles by measuring the attenuation of light when it passes through an aerosol mixture. The light absorption method has the advantages of fast response speed, high accuracy, and no need for complex sample processing. It is often used in environmental monitoring, industrial process control, scientific research and other fields. The MIE scattering method (MieScattering Method) is a measurement technology based on Mie scattering theory, which measures dust concentration by analyzing the scattering characteristics of particles to light. The charge induction method is based on the charge induction of particles to air, and determines the concentration of particles by measuring the electric field changes caused by charged particles.

[0004] The filter membrane weighing method, light absorption method, MIE scattering method (Mie Scattering Method), charge induction method, etc. can all detect dust concentration, but they all require the installation of optical sensors or electric field sensors inside the top-blown furnace. However, due to the poor heat resistance of the sensor, if the sensor is installed at one end of a top-blown furnace working in a high-temperature environment, such as a tin ore top-blown furnace, the sensor will be damaged or its performance will degrade due to its inability to withstand the high temperature, making it impossible to effectively detect the dust concentration. Therefore, the top-blown furnace working in a high-temperature environment cannot be applied to the above-mentioned dust concentration detection scheme, and a new dust concentration detection method is urgently needed to detect the dust concentration of a top-blown furnace working in a high-temperature environment.

[0005] The above contents are only used to assist in understanding the technical solution of the present application and do not constitute an admission that the above contents are prior art. Summary of the invention

[0006] The present application provides a top-blown furnace dust concentration detection method based on a combination of a light absorption method and a light reflection method, thereby enabling the dust concentration of a top-blown furnace operating in a high-temperature environment to be detected.

[0007] To achieve the above objectives, the present application provides a method for detecting dust concentration in a top-blown furnace based on a combination of a light absorption method and a light reflection method, the method comprising the following steps:

[0008] Controlling the sensor to emit incident light to a preset position of the top-blown furnace, and receiving reflected light based on the incident light after it passes through the dust and then passes through the dust again;

[0009] Determining a signal intensity corresponding to the reflected light;

[0010] The signal strength is input into the dust concentration function expression to determine the dust concentration of the top-blown furnace.

[0011] Wherein, the dust concentration function expression is:

[0012]

[0013] in, is the dust concentration, K is the absorption coefficient, L is the optical path, is Planck's constant, is the transmitting frequency of the sensor, is the signal intensity corresponding to the reflected light, is the incident light intensity, , are dielectric constants, and A is absorbance.

[0014] Optionally, before the step of inputting the signal strength into a dust concentration function expression to determine the dust concentration of the top-blown furnace, the step further includes:

[0015] Determine the intensity of the incident light after the incident light passes through the dust according to the absorbance, and determine the intensity of the reflected light after the incident light is reflected after passing through the dust and passing through the dust again according to the absorbance;

[0016] Determine the intensity of reflected light based on the incident light after passing through the dust according to the reflectivity and the intensity of the incident light after the incident light passes through the dust;

[0017] Simplifying the intensity of the reflected light after the incident light passes through the dust and then passes through the dust again according to the intensity of the reflected light after the incident light passes through the dust, to obtain the simplified intensity of the first reflected light after the incident light passes through the dust and then passes through the dust again;

[0018] Determine the intensity of the second reflected light after the incident light is reflected after passing through the dust and passing through the dust again according to the signal intensity based on the intensity of the reflected light after the incident light is reflected after passing through the dust and passing through the dust again;

[0019] The dust concentration function expression is generated based on the first reflected light intensity and the second reflected light intensity.

[0020] Optionally, the step of determining the signal strength corresponding to the reflected light includes:

[0021] Obtaining the number of photons of the emitted light received by the sensor and the receiving time;

[0022] The signal strength corresponding to the reflected light is determined according to the number of photons and the receiving time.

[0023] In addition, to achieve the above-mentioned purpose, the present application also provides a terminal device, which includes: a memory, a processor, and a dust concentration detection program stored in the memory and runnable on the processor, and the dust concentration detection program, when executed by the processor, implements the steps of the top-blown furnace dust concentration detection method based on the combination of light absorption method and light reflection method as described above.

[0024] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a dust concentration detection program is stored. When the dust concentration detection program is executed by a processor, the steps of the top-blown furnace dust concentration detection method based on the combination of light absorption method and light reflection method as described above are implemented.

[0025] The present application controls the sensor to emit incident light to a preset position of a top-blown furnace, and receives reflected light based on the reflection of the incident light and after passing through the dust, thereby determining the signal strength corresponding to the reflected light, and inputting the signal strength into the dust concentration function expression to determine the dust concentration of the top-blown furnace. The present application provides a new dust concentration function expression, which only requires determining the signal strength corresponding to the reflected light to calculate the dust concentration without arranging a sensor inside the top-blown furnace. The application is suitable for top-blown furnaces working in high-temperature environments, and can improve the breadth and applicability of dust concentration detection.

[0026] The beneficial effects of this application also include:

[0027] (1) The sensor of the present application does not need to be installed inside the top-blown furnace, and can solve the problem that the dust concentration cannot be effectively measured due to the high temperature inside the top-blown furnace.

[0028] (2) The present application can reduce the error of top-blown furnace dust concentration detection by combining the dust concentration function expression determined by the light absorption method and the light reflection method.

[0029] (3) The dust concentration function expression established in this application is a linear relationship between the signal intensity corresponding to the reflected light and the dust concentration. When performing dust concentration detection, it is only necessary to determine the signal intensity corresponding to the reflected light to calculate the dust concentration, which can improve the speed of dust concentration detection in the top-blown furnace. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the process of Example 1 of the dust concentration detection method of the present application;

[0031] Figure 2 A schematic diagram of the reflection path of the incident light emitted by the sensor involved in the present application;

[0032] Figure 3 This is a schematic diagram of the connection of components of the dust concentration detection method involved in this application;

[0033] Figure 4 This is a detailed flow chart of step S30 in the first embodiment of the dust concentration detection method of the present application;

[0034] Figure 5 This is the principle diagram of light absorption;

[0035] Figure 6 This is the principle diagram of light reflection;

[0036] Figure 7 It is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present application.

[0037] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0038] It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0039] In the related technologies, when the dust concentration is detected by the filter membrane weighing method, light absorption method, MIE scattering method (Mie Scattering Method), charge induction method, etc., it is necessary to install an optical sensor or an electric field sensor inside the top-blown furnace. However, due to the poor heat resistance of the sensor, if the sensor is installed at one end of a top-blown furnace working in a high-temperature environment, such as a tin top-blown furnace, the sensor will be damaged or its performance will be degraded because it cannot withstand the high temperature, and thus the dust concentration cannot be effectively detected.

[0040] In order to solve the above defects in the related art, the present application proposes a method for detecting dust concentration in a top-blown furnace based on a combination of light absorption method and light reflection method, and its main solution steps include the following:

[0041] The present application controls the sensor to emit incident light to a preset position of a top-blown furnace, and receives reflected light based on the incident light after it passes through the dust and then passes through the dust again, thereby determining the signal strength corresponding to the reflected light, and inputting the signal strength into the dust concentration function expression to determine the dust concentration of the top-blown furnace. The present application provides a new dust concentration function expression, which only requires determining the signal strength corresponding to the reflected light to calculate the dust concentration without arranging a sensor inside the top-blown furnace. The application is suitable for top-blown furnaces working in high-temperature environments, and can improve the breadth and applicability of dust concentration detection.

[0042] In order to better understand the above technical solution, exemplary embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present application and to fully convey the scope of the present application to those skilled in the art.

[0043] Reference Figure 1 In the embodiment of the dust concentration detection method of the present application, the top-blown furnace dust concentration detection method based on the combination of light absorption method and light reflection method includes steps S10 to S30:

[0044] Step S10: controlling the sensor to emit incident light to a preset position of the top-blown furnace, and receiving reflected light based on the incident light being reflected after passing through the dust and then passing through the dust again;

[0045] In this embodiment, the dust of the top-blown furnace is usually ejected from the top nozzle in the furnace or the air inlet on the furnace top. Therefore, in order to detect the dust concentration, a sensor can be arranged on the top or around the top-blown furnace, and the sensor can be controlled to emit incident light to a preset position of the top-blown furnace. The preset position can be the top nozzle of the top-blown furnace or the air inlet on the furnace top.

[0046] It should be noted that the incident light emitted by the sensor is emitted vertically toward the preset position.

[0047] Incident light refers to the portion of light that strikes the surface of an object from a light source or emitter. It refers to the light that enters an object or surface. Incident light intensity refers to the light intensity of the light that strikes the surface, i.e., the energy or number of photons of incident light per unit area. It is a physical measure of light, usually expressed as luminous flux or energy flux density. Therefore, incident light refers to the direction and source of light, while incident light intensity refers to the optical intensity or energy of these rays.

[0048] The light signal emitted by the sensor of this application is described by light intensity I. Figure 2 , Figure 2 Schematic diagram of the reflection path of the incident light emitted by the sensor involved in this application. The sensor emits incident light vertically to the preset position of the top-blown furnace. , incident light After passing through the dust, it decays to the incident light , and produces reflected light , reflected light After passing through the dust, it decays into reflected light , and finally the sensor will receive the reflected light It should be noted that the incident light That is, the incident light emitted by the sensor to the preset position of the top-blown furnace, and the reflected light This is the reflected light that is based on the reflection of the incident light and passes through the dust.

[0049] Optionally, the sensor is preferably a laser sensor. Specifically, a laser sensor capable of emitting near-infrared light between 750 nanometers (nm) and 2500 nanometers (nm) can be selected.

[0050] Step S20: determining the signal strength corresponding to the reflected light;

[0051] In this embodiment, the number of photons of the reflected light received by the sensor and the reception time can be obtained, and then the signal strength corresponding to the reflected light can be determined according to the number of photons and the reception time.

[0052] Specifically, the signal intensity M (Million Counts Per Secon, ) is calculated as:

[0053]

[0054] Among them, M is the signal intensity corresponding to the emitted light, N is the number of photons of reflected light received by the sensor, and T is the reception time of the sensor receiving the reflected light.

[0055] Optionally, the sensor receives the reflected light after the incident light is reflected and passes through the dust. , the host computer can be connected to the sensor serial port, so that the host computer can obtain the reflected light returned by the sensor through the serial port connection , to determine the reflected light The corresponding signal strength .

[0056] Reference Figure 3 , Figure 3 The figure is a schematic diagram of the connection of components of the dust concentration detection method involved in this application. A communication connection can be established between the host computer and the sensor, and the communication connection can be a serial port connection. Then, the sensor is used to receive the reflected light after the incident light is reflected and passes through the dust. , and then the reflected light is obtained through the host computer The corresponding signal strength .

[0057] In another optional embodiment, a sensor with wireless communication function such as Bluetooth or WIFI can be used, so that the sensor can establish wireless communication connection with other terminal devices, such as mobile phones and computers. Then the terminal device establishes a wireless communication connection with the sensor and receives the reflected light returned by the sensor. , to determine the reflected light The corresponding signal strength .

[0058] Step S30: inputting the signal strength into a dust concentration function expression to determine the dust concentration of the top-blown furnace;

[0059] Wherein, the dust concentration function expression is:

[0060]

[0061] in, is the dust concentration, K is the absorption coefficient, L is the optical path, is Planck's constant, is the transmitting frequency of the sensor, is the signal intensity corresponding to the reflected light, is the incident light intensity, , are dielectric constants, and A is absorbance.

[0062] In this embodiment, based on the incident light passing through the dust and then being reflected, the reflected light passing through the dust again The corresponding signal strength M can be substituted into the dust concentration function expression to calculate the dust concentration of the top-blown furnace. There is no need to install the sensor inside the top-blown furnace. It is suitable for top-blown furnaces working in high-temperature environments and can improve the breadth and applicability of dust concentration detection. At the same time, the dust concentration function expression established in this application is a linear relationship between the signal strength corresponding to the reflected light and the dust concentration. When performing dust concentration detection, it is only necessary to determine the signal strength corresponding to the reflected light to calculate the dust concentration, which can also improve the speed of top-blown furnace dust concentration detection.

[0063] Optionally, refer to Figure 4 , Figure 4 This is a detailed flow chart of step S30 in the first embodiment of the dust concentration detection method of the present application. Before step S30, steps S40 to S80 are also included:

[0064] Step S40: determining the intensity of the incident light after the incident light passes through the dust according to the absorbance, and determining the intensity of the reflected light after the emitted light is reflected and passes through the dust according to the absorbance;

[0065] Absorbance (abbreviated as A) is a physical quantity used to describe the absorption capacity of a substance to light. It is defined as the negative value of the logarithm of the ratio of the energy absorbed by the substance to the energy of the incident light after the light passes through the substance. Figure 5 , Figure 5 This is a diagram of the principle of light absorption. When light passes through air containing dust, the dust particles absorb the light, which causes the intensity of the light to weaken. After passing through dust with a concentration of C, it will decay into incident light .

[0066] In this embodiment, the present application establishes the incident light intensity after the incident light passes through the dust according to the absorbance A. Dust concentration , incident light intensity And according to the absorbance A, the intensity of the reflected light based on the incident light passing through the dust is established. , Dust concentration , the intensity of the reflected light after the incident light passes through the dust and then passes through the dust again The relationship between.

[0067] Specifically, according to the absorbance principle, the absorbance A is:

[0068]

[0069] After simplification, the incident light intensity after the incident light passes through the dust is obtained :

[0070]

[0071] Similarly, according to the absorbance principle, the absorbance A is:

[0072]

[0073] After simplification, the intensity of the reflected light after the incident light passes through the dust and then passes through the dust again is obtained. for:

[0074]

[0075] Step S40: determining the intensity of reflected light after the incident light passes through the dust according to the reflectivity and the intensity of the incident light after the incident light passes through the dust;

[0076] In this embodiment, the intensity of the reflected light after the incident light passes through the dust is determined according to the reflectivity and the intensity of the incident light after the incident light passes through the dust. for:

[0077]

[0078] For ease of understanding, the following is an explanation of the intensity of the reflected light based on the incident light passing through the dust. The principle of function expression is explained.

[0079] First, based on the intensity of the reflected light after the incident light passes through the dust Reflectivity R and incident light intensity after passing through dust The relationship between them is:

[0080]

[0081] It is known that the incident light intensity after passing through the dust for:

[0082]

[0083] Therefore, Assign a value to the incident light intensity after it passes through the dust , the reflected light intensity based on the incident light passing through the dust can be obtained for:

[0084]

[0085] Further, refer to Figure 6 , Figure 6This is a diagram of the principle of light reflection. When a light wave is incident from medium 1 to medium 2, it will be refracted and reflected at its interface. Laser is actually a special type of electromagnetic wave. Electromagnetic waves can be in any direction in space, but they can always be decomposed into waves perpendicular to the incident plane (s waves) and waves parallel to the incident plane (p waves).

[0086] Specifically, the reflectivity of the S wave and the reflectivity of p-wave They are:

[0087]

[0088]

[0089] in, is the refractive index of air, is the refractive index of dust in the top-blown furnace.

[0090] The incident light of this application is vertically incident. When the laser is vertically incident, that is, the incident angle is When it is 0, the reflectivity of the p-wave and s-wave is equal. Therefore, when the light wave is incident vertically, its reflectivity is:

[0091]

[0092] The total reflectivity of the laser is the average of the s-wave and p-wave reflectivities:

[0093]

[0094] Therefore, Assigning a value to the reflectivity R can obtain the intensity of the reflected light based on the incident light passing through the dust. for:

[0095]

[0096]

[0097]

[0098] Furthermore, the refractive index for:

[0099]

[0100] in, is the dielectric constant, is the magnetic permeability.

[0101] Therefore, Assign a value to the refractive index The intensity of reflected light can be obtained based on the incident light passing through the dust. for:

[0102]

[0103] Step S60: simplifying the intensity of the reflected light after the incident light passes through the dust and then is reflected and then passes through the dust again according to the intensity of the reflected light after the incident light passes through the dust, to obtain the simplified intensity of the first reflected light after the incident light passes through the dust and then is reflected and then passes through the dust again;

[0104] In this embodiment, the incident light passes through the dust, is reflected, and then passes through the dust again. for:

[0105]

[0106] The intensity of the reflected light after the incident light passes through the dust for:

[0107]

[0108] Therefore, the intensity of the reflected light after the incident light passes through the dust can be The function expression of the reflected light intensity after the incident light passes through the dust and then passes through the dust again is Simplify to obtain the simplified reflected light intensity after the incident light passes through the dust, is reflected, and passes through the dust again for:

[0109]

[0110]

[0111] Step S70: determining the intensity of the second reflected light after the incident light passes through the dust, is reflected and passes through the dust again, according to the signal intensity of the reflected light after the incident light passes through the dust, is reflected and passes through the dust again;

[0112] In this embodiment, based on the intensity of the reflected light after the incident light passes through the dust, is reflected and passes through the dust again. Signal strength M (Million Counts Per Secon, ) is calculated as:

[0113]

[0114] The number of photons N recorded within the receiving time T and the intensity of the second reflected light received by the sensor The relationship is:

[0115]

[0116] Therefore, the above two equations are combined to calculate the intensity of the second reflected light after the incident light passes through the dust and then passes through the dust again: for:

[0117]

[0118]

[0119] The intensity of the reflected light after the incident light passes through the dust and then passes through the dust again Considered as the first reflected light intensity .

[0120] It can be understood that the intensity of the first reflected light and the second reflected light intensity Both are based on the fact that the incident light is reflected after passing through the dust and the intensity of the reflected light after passing through the dust again is equal.

[0121] Step S80: generating the dust concentration function expression based on the first reflected light intensity and the second reflected light intensity.

[0122] In this embodiment, the first reflected light intensity and the second reflected light intensity Both are based on the reflected light intensity after the emitted light is reflected and passes through the dust. The two are equal, so the first reflected light intensity and the second reflected light intensity The joint can obtain:

[0123]

[0124] Further simplification can obtain the dust concentration function expression as follows:

[0125]

[0126] The dust concentration function expression of the present application is all constant except for the signal intensity. Therefore, when performing dust concentration detection, it is only necessary to determine the signal intensity M corresponding to the reflected light after the incident light passes through the dust, is reflected, and then passes through the dust again, and then substitute it into the dust concentration function expression of the present application to calculate the dust concentration of the top-blown furnace. In addition, the dust concentration function expression of the present application is determined by combining the light absorption method and the light reflection method, which can reduce the error of the dust concentration detection of the top-blown furnace.

[0127] In the technical solution provided in this embodiment, the present application controls the sensor to emit incident light to a preset position of the top-blown furnace, and receives reflected light based on the incident light after passing through the dust and then passing through the dust again, thereby determining the signal strength corresponding to the reflected light, and inputting the signal strength into the dust concentration function expression to determine the dust concentration of the top-blown furnace. The present application provides a new dust concentration function expression, which only requires determining the signal strength corresponding to the reflected light to calculate the dust concentration without arranging a sensor inside the top-blown furnace. The application is suitable for top-blown furnaces working in high-temperature environments, and can improve the breadth and applicability of dust concentration detection.

[0128] Reference Figure 7 , Figure 7 This is a schematic diagram of the terminal structure of the hardware operating environment involved in the embodiment of the present application.

[0129] like Figure 7 As shown, the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002. Among them, the communication bus 1002 is used to realize the connection and communication between these components. The user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), a mouse, etc., and the optional user interface 1003 may also include a standard wired interface and a wireless interface. The network interface 1004 may optionally include a standard wired interface and a wireless interface (such as a WI-FI interface). The memory 1005 may be a high-speed RAM memory, or a stable memory (non-volatile memory), such as a disk memory. The memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0130] Those skilled in the art will understand that Figure 7 The terminal structure shown in the figure does not constitute a limitation on the terminal, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[0131] like Figure 7 As shown, the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a dust concentration detection program.

[0132] exist Figure 7 In the terminal shown, the network interface 1004 is mainly used to connect to the backend server and perform data communication with the backend server; the processor 1001 can be used to call the dust concentration detection program stored in the memory 1005 and perform the following operations:

[0133] Controlling the sensor to emit incident light to a preset position of the top-blown furnace, and receiving reflected light based on the incident light being reflected after passing through the dust and then passing through the dust again;

[0134] Determining a signal intensity corresponding to the reflected light;

[0135] Inputting the signal strength into a dust concentration function expression to determine the dust concentration of the top-blown furnace;

[0136] Wherein, the dust concentration function expression is:

[0137]

[0138] in, is the dust concentration, K is the absorption coefficient, L is the optical path, is Planck's constant, is the transmitting frequency of the sensor, is the signal intensity corresponding to the reflected light, is the incident light intensity, , are dielectric constants, and A is absorbance.

[0139] Furthermore, the processor 1001 may call a dust concentration detection program stored in the memory 1005, and further perform the following operations:

[0140] Determine the intensity of the incident light after the incident light passes through the dust according to the absorbance, and determine the intensity of the reflected light after the incident light is reflected after passing through the dust and passing through the dust again according to the absorbance;

[0141] Determine the intensity of reflected light based on the incident light after passing through the dust according to the reflectivity and the intensity of the incident light after the incident light passes through the dust;

[0142] Simplifying the intensity of the reflected light based on the incident light being reflected by the dust and passing through the dust again according to the intensity of the emitted light based on the incident light being reflected by the dust, to obtain the simplified intensity of the first reflected light based on the incident light being reflected by the dust and passing through the dust again;

[0143] Determine the intensity of the second reflected light after the incident light is reflected after passing through the dust and passing through the dust again according to the signal intensity based on the intensity of the reflected light after the incident light is reflected after passing through the dust and passing through the dust again;

[0144] The dust concentration function expression is generated based on the first reflected light intensity and the second reflected light intensity.

[0145] Furthermore, the processor 1001 may call a dust concentration detection program stored in the memory 1005, and further perform the following operations:

[0146] Obtaining the number of photons of the reflected light received by the sensor and the receiving time;

[0147] The signal strength corresponding to the reflected light is determined according to the number of photons and the receiving time.

[0148] In addition, to achieve the above-mentioned purpose, the present application also provides a terminal device, which includes: a memory, a processor, and a dust concentration detection program stored in the memory and executable on the processor, and the dust concentration detection program, when executed by the processor, implements the steps of the dust concentration detection method as described above.

[0149] In addition, to achieve the above-mentioned purpose, the present application also provides a computer-readable storage medium, on which a dust concentration detection program is stored. When the dust concentration detection program is executed by a processor, the steps of the dust concentration detection method as described above are implemented.

[0150] It should be noted that, in this article, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or system including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or system. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the existence of other identical elements in the process, method, article or system including the element.

[0151] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0152] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for a terminal device (which can be a mobile phone, a computer) to execute the methods described in each embodiment of the present application.

[0153] The above are only preferred embodiments of the present application, and are not intended to limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A method for detecting dust concentration in a top-blown furnace based on a combination of light absorption and light reflection methods, characterized in that: The detection method comprises: Controlling the sensor to emit incident light to a preset position of the top-blown furnace, and receiving reflected light based on the incident light after being reflected and passing through the dust; Determining a signal intensity corresponding to the reflected light; Inputting the signal strength into a dust concentration function expression to determine the dust concentration of the top-blown furnace; Wherein, the dust concentration function expression is: ； in, is the dust concentration, K is the absorption coefficient, L is the optical path, is Planck's constant, is the transmitting frequency of the sensor, is the signal intensity corresponding to the reflected light, is the incident light intensity, , are dielectric constants, and A is absorbance.

2. The method according to claim 1, characterized in that Before the step of inputting the signal strength into the dust concentration function expression to determine the dust concentration of the top-blown furnace, the step further includes: Determine the intensity of the incident light after the incident light passes through the dust according to the absorbance, and determine the intensity of the reflected light after the incident light is reflected after passing through the dust and passing through the dust again according to the absorbance; Determine the intensity of reflected light based on the incident light after passing through the dust according to the reflectivity and the intensity of the incident light after the incident light passes through the dust; Simplifying the intensity of the reflected light after the incident light passes through the dust and then passes through the dust again according to the intensity of the reflected light after the incident light passes through the dust, to obtain a simplified first intensity of the reflected light after the incident light passes through the dust and then passes through the dust again; Determine the intensity of the second reflected light after the incident light passes through the dust and then reflects, and then passes through the dust again, according to the signal intensity of the reflected light after the incident light passes through the dust and then reflects, and then passes through the dust again; The dust concentration function expression is generated based on the first reflected light intensity and the second reflected light intensity.

3. The method according to claim 1, characterized in that The step of determining the signal strength corresponding to the reflected light comprises: Obtaining the number of photons of the reflected light received by the sensor and the receiving time; The signal strength corresponding to the reflected light is determined according to the number of photons and the receiving time.

4. A terminal device, characterized in that: The terminal device includes: a memory, a processor, and a control program of the terminal device stored in the memory and executable on the processor. When the control program of the terminal device is executed by the processor, the steps of the top-blown furnace dust concentration detection method based on the combination of light absorption method and light reflection method as described in any one of claims 1 to 3 are implemented.

5. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a control program of the terminal device, and when the control program of the terminal device is executed by the processor, the steps of the top-blown furnace dust concentration detection method based on the combination of light absorption method and light reflection method as described in any one of claims 1 to 3 are implemented.

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