Irregular particulate matter weight detection method and device, storage medium and equipment

Abstract

The invention discloses a weight detection method and device for irregular particulate matters, a storage medium and equipment, relates to the technical field of detection, and mainly aims to solve the problem of poor weight detection accuracy of existing irregular particulate matters. Comprising the following steps: when an irregular particulate matter to be detected is placed on the end surface of a detection end of a sensor, transmitting a laser signal to the detection end of the sensor through an optical fiber, and obtaining a reflected light signal of the laser signal reflected from the back surface of the detection end of the sensor; determining trough displacement information based on the reflected light signal, and determining pressure information corresponding to the trough displacement information based on a trough displacement pressure mapping relation; and calculating the weight of the irregular particulate matter based on the pressure information.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of detection, and in particular to a weight detection method and device for irregular granular matter, a storage medium and equipment. BACKGROUND

[0002] With the rapid development of detection technology, the weight detection of matter is usually based on macro-scale measurement. However, the detection of micro-irregular granular matter usually needs ultra-precision instruments for measurement.

[0003] At present, the existing measurement of micro-irregular granular matter usually adopts precision weighing equipment, but most of the precision weighing equipment is complex in structure, large in size or dependent on a specific support platform, and the accuracy of weighing a single or micro (millimeter to micron) granular matter is poor. Therefore, there is an urgent need for a weight detection method for irregular granular matter to solve the above problems. SUMMARY

[0004] Therefore, the present application provides a weight detection method and device for irregular granular matter, a storage medium and equipment, mainly aiming to solve the problem of poor accuracy of weight detection of existing irregular granular matter.

[0005] According to an aspect of the present application, a weight detection method for irregular granular matter is provided, comprising:

[0006] When the irregular granular matter to be detected is placed on the end face of the sensor detection end, a laser signal is emitted to the sensor detection end through an optical fiber, and a reflected light signal reflected from the back face of the sensor detection end is acquired;

[0007] Based on the reflected light signal, wave trough displacement information is determined, and based on a wave trough displacement pressure mapping relationship, pressure information corresponding to the wave trough displacement information is determined;

[0008] Based on the pressure information, the weight of the irregular granular matter is calculated.

[0009] Further, the reflected light signal includes a first light intensity signal and a second light intensity signal, and before the wave trough displacement information is determined based on the reflected light signal and the pressure information corresponding to the wave trough displacement information is determined based on a wave trough displacement pressure mapping relationship, the method further comprises:

[0010] Based on the first light intensity signal, the second light intensity signal, the environmental refractive index, the FP cavity length, the incident light wavelength and the initial phase, an interference signal is determined;

[0011] When the trough position of the interference spectrum matches the preset phase condition, an initial mapping relationship is established between the trough position and the cavity length of the FP cavity, and the pressure is associated with the initial mapping relationship to obtain the trough displacement-pressure mapping relationship.

[0012] Furthermore, the particle size of the irregular particulate matter ranges from 1 μm to 50 μm.

[0013] According to another aspect of this application, a weight detection device for irregular particulate matter is provided, comprising:

[0014] Sensor, processor, the sensor,

[0015] The sensor is used to emit a laser signal to the irregular particulate matter to be detected at the sensor detection end, and to collect the reflected light signal of the laser signal after passing through the irregular particulate matter.

[0016] The processor is used to execute the weight detection method for irregular particulate matter as described in claims 1-3;

[0017] The detection end includes a spiral structure coaxially arranged on the end face and a flat plate structure arranged at one end of the spiral structure and parallel to the end face, and an FP resonant cavity is formed between the end face and the flat plate structure.

[0018] Furthermore, the flat plate structure is centered and parallel to the end face, and the spiral structure is used to connect the end face and the flat plate structure.

[0019] Furthermore, the sensor includes a tunable laser that provides an optical signal, an optical power meter that receives the reflected optical signal, and an optical fiber connector for alignment.

[0020] Furthermore, the detection end also includes an optical fiber, which includes an optical fiber core and an optical fiber cladding.

[0021] Furthermore, the spiral structure is a cylindrical spiral structure, which is composed of multiple cylindrical spiral structures with the same spiral direction, and the particle size of the irregular particulate matter ranges from 1μm to 50μm.

[0022] According to another aspect of this application, a storage medium is provided, wherein at least one executable instruction is stored therein, the executable instruction causing a processor to perform an operation corresponding to the weight detection method for irregular particulate matter described above.

[0023] According to another aspect of this application, a terminal is provided, comprising: a processor, a memory, a communication interface, and a communication bus, wherein the processor, the memory, and the communication interface communicate with each other through the communication bus;

[0024] The memory is used to store at least one executable instruction, which causes the processor to perform the operation corresponding to the weight detection method for irregular particulate matter described above.

[0025] By employing the above technical solutions, the technical solutions provided in the embodiments of this application have at least the following advantages:

[0026] This application provides a method, apparatus, storage medium, and device for detecting the weight of irregular particulate matter. Compared with the prior art, the embodiments of this application, when the irregular particulate matter to be detected is placed on the end face of the sensor detection end, emit a laser signal to the sensor detection end through an optical fiber, and acquire the reflected light signal reflected from the back of the sensor detection end by the laser signal; determine the trough displacement information based on the reflected light signal, and determine the pressure information corresponding to the trough displacement information based on the trough displacement pressure mapping relationship; calculate the weight of the irregular particulate matter based on the pressure information, thereby achieving high-sensitivity detection of the weight of small particles, meeting the compatibility requirements of complex detection pipelines, simplifying the operation of precision equipment, and improving the efficiency of weight detection of small irregular particulate matter.

[0027] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0028] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0029] Figure 1 A flowchart of a weight detection method for irregular particulate matter provided in an embodiment of this application is shown;

[0030] Figure 2 This illustration shows a schematic diagram of a sensor detection end structure provided in an embodiment of this application;

[0031] Figure 3 This paper shows a block diagram of a weight detection device for irregular particulate matter provided in an embodiment of this application;

[0032] Figure 4 This illustration shows a schematic diagram of a sensor structure provided in an embodiment of this application;

[0033] Figure 5 This illustration shows a schematic diagram of a detection end structure provided in an embodiment of this application;

[0034] Figure 6 A schematic diagram of the structure of a terminal provided in an embodiment of this application is shown. Detailed Implementation

[0035] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] This application provides a method for detecting the weight of irregular particulate matter, such as... Figure 1 As shown, the method includes:

[0038] S11. When the irregular particulate matter to be detected is placed on the end face of the sensor detection end, a laser signal is emitted to the sensor detection end through an optical fiber, and the reflected light signal reflected from the back of the sensor detection end is acquired.

[0039] In this embodiment, the execution end, acting as the current execution subject, can be a processor with computing capabilities. It processes the reflected light signal acquired by the sensor to perform weight detection. Specifically, the small, irregular particles to be detected are placed on the end face of the sensor's detection end via the end of an optical fiber. Simultaneously, a laser signal is emitted to the detection end via the optical fiber. In this embodiment, the detection end includes a helical structure coaxially arranged on the end face and a flat plate structure disposed at one end of the helical structure and parallel to the end face. An FP resonant cavity is formed between the end face and the flat plate structure to acquire the reflected light signal, which is the laser signal reflected from the back of the detection end. For example... Figure 2As shown, the end face is used to place tiny, irregular particles. Since the end face has a certain length, the back side of the end face is the side that reflects the laser signal, so as to obtain the reflected light signal. The displacement of this signal reflects the change in the cavity length of the FP cavity.

[0040] It should be noted that the irregular particulate matter to be detected in the embodiments of this application can be lunar soil particles or tiny particulate matter such as silica, etc., and the embodiments of this application do not make specific limitations.

[0041] S12. Determine the valley displacement information based on the reflected light signal, and determine the pressure information corresponding to the valley displacement information based on the valley displacement pressure mapping relationship.

[0042] In this embodiment of the application, after the laser signal is emitted, the reflected light signal of the laser signal after passing through the irregular particulate matter is collected by the sensor. At this time, since an FP resonant cavity is formed between the end face and the plate structure, when there is pressure, the pressure will cause the spring to compress, thereby shortening the length of the FP cavity. The wavelength of the interference valley will decrease as the length of the FP cavity decreases. Therefore, the valley displacement information is first determined based on the light reflection signal, and then the pressure information corresponding to this valley displacement information is determined based on the pre-established valley displacement pressure mapping relationship.

[0043] S13. Calculate the weight of the irregular particulate matter based on the pressure information.

[0044] In this embodiment of the application, after obtaining the pressure information, the mass of the substance can be calculated based on the gravitational coefficient under the detection environment combined with the pressure information. For example, the weight of irregular particulate matter can be calculated based on the Earth's gravity and the formula for calculating gravity and pressure.

[0045] In another embodiment of this application, for further definition and explanation, before determining the trough displacement information based on the reflected light signal and determining the pressure information corresponding to the trough displacement information based on the trough displacement pressure mapping relationship, the method further includes:

[0046] The interference signal is determined based on the first light intensity signal, the second light intensity signal, the ambient refractive index, the FP cavity length, the incident light wavelength, and the initial phase.

[0047] When the trough position of the interference spectrum matches the preset phase condition, an initial mapping relationship is established between the trough position and the cavity length of the FP cavity, and the pressure is associated with the initial mapping relationship to obtain the trough displacement-pressure mapping relationship.

[0048] To improve the accuracy and convenience of weight detection for irregular particulate matter, the current execution end pre-generates a trough displacement-pressure mapping relationship. This allows for the determination of pressure information after acquiring the reflected light signal and determining the trough displacement information. Since an FP resonant cavity is formed between the end face and the plate structure, the light intensities reflected from the fiber end face and the plate structure in the reflected light signal are denoted as I1 and I2, respectively. The interference signal can be expressed as:

[0049]

[0050] Where n represents the ambient refractive index, L represents the cavity length of the FP cavity, and λ represents the incident light wavelength. This represents the initial phase. Furthermore, a preset phase condition is set as the basis for establishing the mapping relationship between the trough position and the FP cavity length. That is, when the trough position of the interference spectrum matches the preset phase condition, an initial mapping relationship between the trough position and the FP cavity length is established, and the pressure is correlated with the initial mapping relationship to obtain the trough displacement-pressure mapping relationship. Specifically, the trough position of the interference spectrum matching the preset phase condition can be expressed as:

[0051]

[0052] Where m represents an integer, λ m This indicates the location of the m-th order trough, from which we can obtain:

[0053]

[0054] Based on the aforementioned calculation formulas, it can be concluded that when pressure is present, the pressure will compress the spring, thereby shortening the length of the FP cavity. The wavelength of the interference trough will decrease as the length of the FP cavity decreases (such as blue shift), and there is a correlation between the two. Therefore, an initial mapping relationship between the trough position and the length of the FP cavity can be established to associate the pressure with the initial mapping relationship and obtain the trough displacement pressure mapping relationship.

[0055] In a real-world test scenario, the irregular particulate matter consisted of silica microspheres. After the microspheres were lifted to the detection end via an optical fiber, the spectrum exhibited blue shifts of 0.49 nm and 0.72 nm, respectively. Upon removing the microspheres, the positions of the interference spectrum troughs simultaneously recovered, demonstrating the sensor's excellent repeatability and indicating that the weight of irregular particulate matter can be measured using the trough displacement-pressure mapping relationship.

[0056] In some embodiments, the particle size of the irregular particulate matter ranges from 1 μm to 50 μm, and preferably, the particle size ranges from 10 μm to 30 μm.

[0057] This application provides a method for detecting the weight of irregular particulate matter. Compared with the prior art, this application method involves emitting a laser signal through an optical fiber to the sensor detection end when the irregular particulate matter to be detected is placed on the end face of the sensor detection end, and acquiring the reflected light signal reflected from the back of the sensor detection end. Based on the reflected light signal, trough displacement information is determined, and pressure information corresponding to the trough displacement information is determined based on the trough displacement pressure mapping relationship. The weight of the irregular particulate matter is calculated based on the pressure information, achieving high-sensitivity detection of the weight of small particles. This method can meet the compatibility requirements of complex detection pipelines, simplify the operation of precision equipment, and improve the efficiency of weight detection of small irregular particulate matter.

[0058] Furthermore, as a response to the above Figure 1 The implementation of the method shown in this application provides a weight detection device for irregular particulate matter, such as... Figure 3 As shown, the device includes: a sensor 21 and a processor 22.

[0059] The sensor is used to emit a laser signal to the irregular particulate matter to be detected at the sensor detection end, and to collect the reflected light signal of the laser signal after passing through the irregular particulate matter.

[0060] The processor is used to execute the weight detection method for irregular particulate matter as described in claims 1-3;

[0061] The detection end includes a spiral structure coaxially arranged on the end face and a flat plate structure arranged at one end of the spiral structure and parallel to the end face, and an FP resonant cavity is formed between the end face and the flat plate structure.

[0062] Furthermore, the flat plate structure is centered and parallel to the end face, and the spiral structure is used to connect the end face and the flat plate structure.

[0063] Furthermore, the sensor includes a tunable laser that provides an optical signal, an optical power meter that receives the reflected optical signal, and an optical fiber connector for alignment.

[0064] In some embodiments, to improve the accuracy of establishing the mapping relationship between the trough location and the FP cavity length, such as Figure 4The schematic diagram of the sensor structure shown illustrates that a tunable laser provides the laser signal. The laser beam travels through an optical fiber and fiber optic connectors to the sensor's detection end, where it is reflected at the fiber end face and the bottom surface of the flat plate structure. The two reflected beams propagate in opposite directions and interfere with each other, which is then received by an optical power meter. The height of the spiral determines the height of the FP resonant cavity. When the flat plate structure is subjected to the gravity of lunar soil particles, the spiral expands or contracts, causing the height of the FP resonant cavity to change, thus affecting the position of the trough of the reflected light.

[0065] Furthermore, the detection end also includes an optical fiber, which includes an optical fiber core and an optical fiber cladding.

[0066] Furthermore, the spiral structure is a cylindrical spiral structure, which is composed of multiple cylindrical spiral structures with the same spiral direction, and the particle size of the irregular particulate matter ranges from 1μm to 50μm.

[0067] In some embodiments, the helical structure is a cylindrical helical structure with an outer diameter of 80 μm to 100 μm; the helical structure is composed of multiple helices with the same helical direction, with 2 to 4 helices, and each helice has a cross-sectional area of ​​2 μm². 2 ~16μm 2 The spiral height is 60μm to 100μm, and the number of turns is 1 to 3; the flat plate structure is a disk structure with a diameter of 80μm to 100μm. Preferably, the outer diameter of the cylindrical spiral structure is 70μm to 100μm, and the cross-section of each spiral can be circular, rectangular, elliptical, or any shape between the three.

[0068] In some embodiments, to achieve accurate measurement of micro-sized irregular particulate matter, each spiral structure has a rectangular cross-section with dimensions of 3μm*3.5μm, a spiral height of 60–80μm, and 1–3 turns; the flat plate structure is a disk structure with a diameter of 80–90μm and a thickness of 1–3μm (preferably 2μm); the overall size of the probe is less than 100μm. As a further preferred embodiment, when multiple spirals are provided, the multiple spirals are uniformly arranged around the center of the fiber end face.

[0069] In a specific embodiment, such as Figure 5 As shown, the sensor's detection end includes a single-mode optical fiber (including an optical fiber core 101 and an optical fiber cladding 102) and a miniature 3D structure disposed on the optical fiber end face (corresponding to the optical fiber core 101). The miniature 3D structure includes a miniature 3D spiral structure 103 and a top flat plate structure 104. The flat plate structure is aligned with the center of the optical fiber end face and parallel to the optical fiber end face. The miniature 3D spiral structure is used to connect the optical fiber end face and the flat plate structure.

[0070] The helical structure has a rectangular cross-section (i.e., the cross-section of a single helix) with dimensions (w*t) of 3μm*3.5μm (other circular, elliptical, or intermediate cross-sectional structures can also be used), and a helix height of H = 60.838μm. The flat plate structure is a disk structure with a diameter of 80μm and a thickness of 2μm. The overall structure size is less than 100μm, making it suitable for micro-area probes. The helix is ​​a cylindrical helical structure consisting of three single helices rotating in the same direction, evenly distributed around the center of the optical fiber. The number of turns of the helix (i.e., the number of circles rotated on the central axial projection plane) is 3, and the outer diameter of the helix is ​​70μm. The helix is ​​axially elastic and can expand and contract under external forces.

[0071] In some embodiments, the weight detection device for irregular particulate matter in this application further includes an optical fiber and a self-made optical fiber clamp, so as to pick up the irregular particulate matter to be detected onto the end face of the sensor detection end.

[0072] In one specific embodiment, the tiny irregular particulate matter to be tested is lunar soil particles collected on the moon. After obtaining the trough displacement information, the pressure information corresponding to the trough displacement information is determined by using the trough displacement pressure mapping relationship, and the weight is calculated.

[0073] This application provides a weight detection device for irregular particulate matter. Compared with the prior art, this application provides a device that, when the irregular particulate matter to be detected is placed on the end face of the sensor detection end, emits a laser signal to the sensor detection end through an optical fiber and acquires the reflected light signal reflected from the back of the sensor detection end. Based on the reflected light signal, it determines the trough displacement information and determines the pressure information corresponding to the trough displacement information based on the trough displacement pressure mapping relationship. Based on the pressure information, it calculates the weight of the irregular particulate matter, achieving high-sensitivity detection of the weight of small particles. This device can meet the compatibility requirements of complex detection pipelines, simplify the operation of precision equipment, and improve the weight detection efficiency of small irregular particulate matter.

[0074] According to one embodiment of this application, a storage medium is provided, the storage medium storing at least one executable instruction that can perform the weight detection method for irregular particulate matter in any of the above method embodiments.

[0075] Figure 6 The diagram shows a structural schematic of a terminal according to one embodiment of the present application. The specific embodiments of the present application do not limit the specific implementation of the terminal.

[0076] like Figure 6As shown, the terminal may include: a processor 302, a communication interface 304, a memory 306, and a communication bus 308.

[0077] The processor 302, communication interface 304, and memory 306 communicate with each other via communication bus 308.

[0078] Communication interface 304 is used to communicate with other network elements such as clients or other servers.

[0079] The processor 302 is used to execute program 310, specifically to execute the relevant steps in the above-described embodiment of the weight detection method for irregular particulate matter.

[0080] Specifically, program 310 may include program code that includes computer operation instructions.

[0081] Processor 302 may be a central processing unit (CPU), a specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application. The terminal includes one or more processors, which may be processors of the same type, such as one or more CPUs; or they may be processors of different types, such as one or more CPUs and one or more ASICs.

[0082] Memory 306 is used to store program 310. Memory 306 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.

[0083] Specifically, program 310 can be used to cause processor 302 to perform the following operations:

[0084] When the irregular particulate matter to be detected is placed on the end face of the sensor detection end, a laser signal is emitted to the sensor detection end through an optical fiber, and the reflected light signal reflected from the back of the sensor detection end is acquired.

[0085] The valley displacement information is determined based on the reflected light signal, and the pressure information corresponding to the valley displacement information is determined based on the valley displacement pressure mapping relationship.

[0086] The weight of the irregular particulate matter is calculated based on the pressure information.

[0087] Obviously, those skilled in the art should understand that the modules or steps of this application described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. Optionally, they can be implemented using computer-executable program code, thereby storing them in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those presented here, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, this application is not limited to any particular combination of hardware and software.

[0088] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A method for detecting the weight of irregular particulate matter, characterized in that, include: When the irregular particulate matter to be detected is placed on the end face of the sensor detection end, a laser signal is emitted to the sensor detection end through an optical fiber, and the reflected light signal reflected from the back of the sensor detection end is acquired. The valley displacement information is determined based on the reflected light signal, and the pressure information corresponding to the valley displacement information is determined based on the valley displacement pressure mapping relationship. The weight of the irregular particulate matter is calculated based on the pressure information.

2. The method according to claim 1, characterized in that, The reflected light signal includes a first light intensity signal and a second light intensity signal. Before determining the trough displacement information based on the reflected light signal and determining the pressure information corresponding to the trough displacement information based on the trough displacement pressure mapping relationship, the method further includes: The interference signal is determined based on the first light intensity signal, the second light intensity signal, the ambient refractive index, the FP cavity length, the incident light wavelength, and the initial phase. When the trough position of the interference spectrum matches the preset phase condition, an initial mapping relationship is established between the trough position and the cavity length of the FP cavity, and the pressure is associated with the initial mapping relationship to obtain the trough displacement-pressure mapping relationship.

3. The method according to claim 1, characterized in that, The particle size of the irregular particulate matter ranges from 1 μm to 50 μm.

4. A weight detection device for irregular particulate matter, characterized in that, include: Sensor, processor, the sensor, The sensor is used to emit a laser signal to the irregular particulate matter to be detected at the sensor detection end, and to collect the reflected light signal of the laser signal after passing through the irregular particulate matter. The processor is used to execute the weight detection method for irregular particulate matter as described in claims 1-3; The detection end includes a spiral structure coaxially arranged on the end face and a flat plate structure arranged at one end of the spiral structure and parallel to the end face, and an FP resonant cavity is formed between the end face and the flat plate structure.

5. The apparatus according to claim 4, characterized in that, The flat plate structure is centered and parallel to the end face, and the spiral structure is used to connect the end face and the flat plate structure.

6. The apparatus according to claim 4, characterized in that, The sensor includes a tunable laser that provides optical signals, an optical power meter that receives reflected optical signals, and an optical fiber connector for alignment.

7. The apparatus according to claim 4, characterized in that, The detection end also includes an optical fiber, which comprises an optical fiber core and an optical fiber cladding.

8. The apparatus according to any one of claims 4-7, characterized in that, The spiral structure is a cylindrical spiral structure, which is composed of multiple cylindrical spiral structures with the same spiral direction. The particle size of the irregular particulate matter ranges from 1 μm to 50 μm.

9. A computer-readable storage medium having a computer program / instructions stored thereon, characterized in that, When the computer program / instructions are executed by the processor, they implement the steps of the method of claim 1.

10. A computer device, comprising a memory, a processor, and a computer program stored in the memory, characterized in that, The processor executes the computer program to implement the steps of the method of claim 1.

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