Powder detection method, system and device, storage medium and program product

Abstract

The invention relates to a powder detection method, system and device, a storage medium and a program product. The method comprises the following steps: determining a reference moving speed of a material carrying mechanism according to a signal coverage range of an electromagnetic wave generator and a preset moving time length of powder to be detected in the signal coverage range, and controlling the material carrying mechanism for carrying the powder to be detected to move according to the reference moving speed, controlling the electromagnetic wave generator to emit an electromagnetic wave signal to the to-be-detected powder at the position where the to-be-detected powder reaches the electromagnetic wave generator on the material carrying mechanism, and acquiring an infrared signal generated by the to-be-detected powder and received by the infrared detector at the position where the to-be-detected powder reaches the infrared detector on the material carrying mechanism; the detection result of the metal particles in the powder to be detected is determined according to the infrared signal; the electromagnetic wave signal is used for heating metal particles in the to-be-detected powder; according to the method, the detection sensitivity is improved, and the risks of missing detection and error detection are correspondingly reduced.

Description

Technical Field

[0001] The present application relates to the technical field of battery powder detection, and particularly to a powder detection method, system, device, storage medium, and program product. Background Art

[0002] During the battery manufacturing process, the quality of the powder used to make the electrodes affects the battery performance. For example, if metal particles (such as iron, copper, nickel, etc.) are mixed into the powder, it may cause an internal short circuit or thermal runaway in the battery, thereby having a destructive impact on the battery.

[0003] In the related art, the metal particles in the powder are determined by analyzing the plasma emission spectrum through high-energy laser ablation of the powder, or the magnetic separation method is used to magnetically adsorb and separate magnetic metal particles such as iron and nickel, so as to realize the detection of metal particles in the powder.

[0004] However, the detection sensitivity of metal particles in the powder in the related art is low, resulting in a relatively high risk of missed detection and misdetection. Summary of the Invention

[0005] Based on this, it is necessary to provide a powder detection method, system, device, storage medium, and program product for the above technical problems.

[0006] In a first aspect, an embodiment of the present application provides a powder detection method, which is applied to a controller in a powder detection system. The powder detection system includes an electromagnetic wave generator, an infrared detector, and a material loading mechanism connected to the controller. The electromagnetic wave generator and the infrared detector are both arranged facing the material loading mechanism. The method includes:

[0007] Determine the reference moving speed of the material loading mechanism according to the signal coverage range of the electromagnetic wave generator and the preset moving duration of the powder to be detected within the signal coverage range, and control the material loading mechanism to move at the reference moving speed; the material loading mechanism is used to carry the powder to be detected;

[0008] When the powder to be detected on the material loading mechanism reaches the position of the electromagnetic wave generator, control the electromagnetic wave generator to emit an electromagnetic wave signal to the powder to be detected; the electromagnetic wave signal is used to heat up the metal particles in the powder to be detected;

[0009] When the powder to be detected on the material loading mechanism reaches the position of the infrared detector, obtain the infrared signal generated by the powder to be detected received by the infrared detector;

[0010] Determine the detection result of the metal particles in the powder to be detected according to the infrared signal.

[0011] In the embodiments of the present application, the material loading mechanism is controlled to move to transport the powder to be inspected through the electromagnetic wave generator first. The electromagnetic wave generator radiates electromagnetic wave signals to the powder to be inspected, and then it passes through the infrared detector. The infrared detector acquires the infrared signals generated by the powder to be inspected, and determines the detection result of the metal particles in the powder to be inspected based on the acquired infrared signals. The acquired infrared signals can be used to reflect the thermal sensitivity difference between the metal particles and other components in the powder to be inspected under the action of the electromagnetic wave signals. Metal particles are sensitive to electromagnetic wave signals, and significant thermal sensitivity differences are generated between other components under the action of the electromagnetic wave signals. The significant thermal sensitivity difference is utilized to detect the metal particles in the powder, improving the detection sensitivity and correspondingly reducing the risks of missed detection and misdetection.

[0012] In one embodiment, determining the detection result of the metal particles in the powder to be inspected according to the infrared signals includes:

[0013] Determining the temperature distribution map of the powder to be inspected according to the infrared signals; the temperature distribution map includes the temperatures of different position points in the powder to be inspected;

[0014] Determining the detection result of the metal particles in the powder to be inspected according to the temperature distribution map.

[0015] In the embodiments of the present application, determining the temperature distribution map of the powder to be inspected according to the infrared signals, and then determining the detection result of the metal particles in the powder to be inspected based on the temperature distribution map. The process of determining the temperature distribution map according to the infrared signals is simple and easy to be implemented by a program, which can improve the detection efficiency. Moreover, the temperature distribution map can accurately reflect the temperature distribution of the powder to be inspected, which helps to subsequently determine whether there are metal particles with obvious thermal sensitivity differences from other components in the powder to be inspected, and synchronously improves the detection reliability.

[0016] In one embodiment, determining the detection result of the metal particles in the powder to be inspected according to the temperature distribution map includes:

[0017] In the case that there is an abnormal area in the temperature distribution map, determining that the detection result is that there are metal particles in the powder to be inspected; the abnormal area represents the area formed by the position points where the temperature is higher than the temperature threshold;

[0018] In the case that there is no abnormal area in the temperature distribution map, determining that the detection result is that there are no metal particles in the powder to be inspected.

[0019] In the embodiments of the present application, based on the way of temperature comparison, it is determined whether there is an abnormal area in the temperature distribution map, and then the detection result is determined. There is no need to perform complex analysis and processing on the temperature distribution map, simplifying the process of determining the detection result and correspondingly improving the detection efficiency.

[0020] In one embodiment, the above method further includes:

[0021] In the case where metal particles are detected in the powder to be detected, determine the number and / or size of the abnormal region according to the temperature distribution map;

[0022] Determine the number and / or size of the abnormal region as the metal particle information of the powder to be detected.

[0023] In the embodiments of the present application, in the case where metal particles are detected, the number and / or size of the abnormal region are determined based on the temperature distribution map as the metal particle information, and more dimensional information including the number and / or size of the metal particles in the powder to be detected is further obtained on the basis of detecting the existence of metal particles, thereby improving the detection richness.

[0024] In one of the embodiments, the above method further includes:

[0025] Adjust the working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism according to the detection result;

[0026] Based on the adjusted working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism, detect the metal particles of the powder to be detected carried on the material loading mechanism.

[0027] In the embodiments of the present application, feedback adjustment is performed on the working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism in the powder detection system based on the detection result to improve the detection result, thereby improving the reliability and accuracy of the detection result.

[0028] In one of the embodiments, the working parameters of the electromagnetic wave generator include the output power; adjusting the working parameters of the electromagnetic wave generator according to the detection result includes:

[0029] In the case where metal particles are detected in the powder to be detected, keep the output power unchanged;

[0030] In the case where no metal particles are detected in the powder to be detected, increase the output power.

[0031] In the embodiments of the present application, different adjustments are made to the output power of the electromagnetic wave generator based on different detection results, so as to keep the output power unchanged when metal particles are detected, reduce unnecessary power consumption, and increase the output power when no metal particles are detected, so as to promote the temperature rise of the metal particles in the subsequent powder to be detected and reduce the missed detection caused by insufficient output power of the electromagnetic wave generator, thereby improving the comprehensiveness and accuracy of the detection.

[0032] In one of the embodiments, adjusting the moving speed of the material loading mechanism according to the detection result includes:

[0033] When it is detected that there are metal particles in the powder to be detected, the moving speed is kept unchanged;

[0034] When it is detected that there are no metal particles in the powder to be detected, the moving speed of the material-carrying mechanism is adjusted according to the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator.

[0035] In one embodiment, adjusting the moving speed of the material-carrying mechanism according to the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator includes:

[0036] Determining a reference duration according to the moving duration; the reference duration is greater than the moving duration;

[0037] Determining a target moving speed according to the reference duration and the signal coverage range;

[0038] Controlling the material-carrying mechanism to move at the target moving speed.

[0039] In the embodiments of the present application, the moving speed of the material-carrying mechanism is adjusted differently based on different detection results, so that when metal particles are detected, the moving speed remains unchanged, reducing unnecessary power consumption, and when no metal particles are detected, the moving speed is reduced to increase the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator, so that the metal particles in the powder to be detected are significantly heated after being fully irradiated by the electromagnetic wave signal, reducing the missed detection caused by the too short moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator, thereby improving the comprehensiveness and accuracy of the detection.

[0040] In a second aspect, an embodiment of the present application further provides a powder detection system, which includes: a controller, and an electromagnetic wave generator, an infrared detector, and a material-carrying mechanism connected to the controller; the electromagnetic wave generator and the infrared detector are both arranged facing the material-carrying mechanism; the controller is used to implement the steps of any one of the above powder detection methods.

[0041] In a third aspect, an embodiment of the present application further provides a powder detection device, which includes:

[0042] A movement control module, configured to determine a reference moving speed of the material-carrying mechanism according to the signal coverage range of the electromagnetic wave generator and a preset moving duration of the powder to be detected within the signal coverage range, and control the material-carrying mechanism to move at the reference moving speed; the material-carrying mechanism is used to carry the powder to be detected;

[0043] An electromagnetic control module, configured to control the electromagnetic wave generator to emit an electromagnetic wave signal to the powder to be detected when the powder to be detected on the material-carrying mechanism reaches the position of the electromagnetic wave generator; the electromagnetic wave signal is used to heat the metal particles in the powder to be detected;

[0044] An infrared control module, configured to obtain an infrared signal generated by the powder to be detected received by an infrared detector when the powder to be detected on the loading mechanism reaches the position of the infrared detector;

[0045] A result determination module, configured to determine a detection result of metal particles in the powder to be detected according to the infrared signal.

[0046] In a fourth aspect, an embodiment of the present application further provides a computer-readable storage medium, on which a computer program is stored, and when the computer program is executed by a processor, the steps in any one of the above powder detection methods are implemented.

[0047] In a fifth aspect, an embodiment of the present application further provides a computer program product, including a computer program, and when the computer program is executed by a processor, the steps in any one of the above powder detection methods are implemented.

[0048] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented according to the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the embodiments of the present application. Description of the Drawings

[0049] Figure 1 It is a schematic diagram of the mechanism of a powder detection system in an embodiment;

[0050] Figure 2 It is a schematic flowchart of a powder detection method in an embodiment;

[0051] Figure 3 It is a schematic flowchart of determining a detection result in an embodiment;

[0052] Figure 4 It is a schematic flowchart of determining a detection result in another embodiment;

[0053] Figure 5 It is a schematic flowchart of determining metal particle information in an embodiment;

[0054] Figure 6 It is a schematic flowchart of adjusting an electromagnetic wave generator and / or a loading mechanism in an embodiment;

[0055] Figure 7 It is a schematic flowchart of adjusting the output power of an electromagnetic wave generator in an embodiment;

[0056] Figure 8 It is a schematic flowchart of adjusting the moving speed of a loading mechanism in an embodiment;

[0057] Figure 9 It is a schematic flowchart of adjusting the moving speed of a loading mechanism in another embodiment;

[0058] Figure 10 is a schematic flow chart of the powder detection method in another embodiment;

[0059] Figure 11 is a structural block diagram of the powder detection device in one embodiment. Detailed implementation manners

[0060] In order to make the objectives, technical solutions and advantages of the present application clearer and more understandable, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. 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.

[0061] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the term "including" and any variation thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0062] Referring to "embodiment" herein means that the specific features, structures or characteristics described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art will explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0063] In the description of the embodiments of this application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of this application, the term "plural" means two or more (including two), unless otherwise specifically defined.

[0064] During the battery manufacturing process, the quality of the powder used to make the electrode will affect the battery performance. For example, if metal particles (such as iron, copper, nickel, etc.) are mixed into the powder, it may cause internal short circuit or thermal runaway of the battery, thus having a destructive impact on the battery. Therefore, during the battery manufacturing process, the detection of the powder is one of the crucial steps.

[0065] In the related art, metal particles in powder materials are determined by analyzing the emission spectrum of plasma through high-energy laser ablation of the powder materials, or the magnetic separation method is used to magnetically adsorb and separate magnetic metal particles such as iron and nickel, so as to realize the detection of metal particles in the powder materials. However, high-energy laser ablation of the powder materials not only destroys the powder materials, but also the laser-induced emission spectrum of metal particles has low sensitivity to light metals (such as lithium and aluminum), and metal particles inside the coating layer cannot be detected. The magnetic separation method is only applicable to magnetic metals such as iron and nickel, and is ineffective for non-magnetic metals (such as copper and aluminum).

[0066] Therefore, the limitations of detecting metal particles in powder materials in the related art are relatively large, resulting in low detection sensitivity and high risks of missed detection and misdetection.

[0067] The powder material detection method provided by the embodiments of the present application can be applied to, for example Figure 1 the powder material detection system shown in the figure. The powder material detection system 100 includes a controller 101, and an electromagnetic wave generator 102, an infrared detector 103, and a material loading mechanism 104 connected to the controller 101. Both the electromagnetic wave generator 102 and the infrared detector 103 are arranged facing the material loading mechanism 104.

[0068] Among them, the controller 101 is communicatively connected to the electromagnetic wave generator 102, the infrared detector 103, and the material loading mechanism 104 respectively, and is used to control the working states of the electromagnetic wave generator 102 / infrared detector 103 / material loading mechanism 104, such as turning on or off the electromagnetic wave generator 102 / infrared detector 103 / material loading mechanism 104, and adjusting the working parameters of the electromagnetic wave generator 102 / infrared detector 103 / material loading mechanism 104, etc.

[0069] The electromagnetic wave generator 102 is used to generate and emit electromagnetic wave signals. Exemplarily, the electromagnetic wave signal is a high-frequency electromagnetic wave, i.e., microwave. The infrared detector 103 is used to sense and collect infrared signals in the environment. The material loading mechanism 104 includes a loading part and a driving part. The loading part is used to load the powder material to be detected, and the driving part is used to drive the loading part to move, so as to drive the powder material to be detected to move.

[0070] Exemplarily, as Figure 1 shown in the figure, the material loading mechanism 104 can load and drive the powder material to be detected to move along its own setting direction. The electromagnetic wave generator 102 and the infrared detector 103 are arranged side by side and both face the material loading mechanism 104, so as to irradiate the powder material to be detected carried by the material loading mechanism 104 with electromagnetic wave signals respectively, and collect the infrared signals generated by the powder material to be detected. Among them, along the moving direction of the powder material to be detected, the powder material to be detected first passes through the electromagnetic wave generator 102 and then passes through the infrared detector 103.

[0071] In one embodiment, the embodiments of the present application provide a powder material detection method, such asFigure 2 As shown, taking the method applied to Figure 1 the controller in

[0072] S210: Determine the reference moving speed of the material-carrying mechanism according to the signal coverage range of the electromagnetic wave generator and the preset moving duration of the powder to be detected within the signal coverage range, and control the material-carrying mechanism to move at the reference moving speed; the material-carrying mechanism is used to carry the powder to be detected.

[0073] Among them, the powder to be detected is the powdery material to be detected. Exemplarily, in the field of battery manufacturing technology, the powder to be detected is the battery powder for making electrodes, such as the positive electrode powder or the negative electrode powder. The material-carrying mechanism includes a carrying part and a driving part. The carrying part is used to carry the powder to be detected, and the driving part is used to drive the carrying part to move so as to drive the powder to be detected to move.

[0074] The signal coverage range of the electromagnetic wave generator can be characterized by the coverage width of the electromagnetic wave generator in the moving direction of the powder to be detected. The preset moving duration of the powder to be detected within the signal coverage range can be set according to user needs. The longer the moving duration, the longer the duration of the powder to be detected being irradiated by the electromagnetic wave signal.

[0075] Optionally, the controller can receive the coverage width of the electromagnetic wave generator and the preset moving duration input by the user, use this coverage width as the moving distance of the material-carrying mechanism, and use this moving duration as the moving duration of the material-carrying mechanism to determine the moving speed of the material-carrying mechanism as the reference moving speed. After the powder to be detected is placed in the loading part, the controller can drive the carrying part to move through the driving part and adjust the moving speed of the material-carrying mechanism to the reference moving speed to control the material-carrying mechanism to move at this reference moving speed.

[0076] Exemplarily, taking the coverage width L of the electromagnetic wave generator and the preset moving duration T as an example, the reference moving speed V of the material-carrying mechanism is V = L / T.

[0077] It should be noted that based on the signal coverage range of the electromagnetic wave generator and the preset moving duration of the powder to be detected within the signal coverage range to determine the moving speed of the material-carrying mechanism, thereby controlling the movement of the material-carrying mechanism, so that the powder to be detected moves within the signal coverage range to meet the required radiation duration, thereby improving the radiation effect, enabling the metal particles in the powder to be detected to fully heat up, and improving the accuracy of the detection result.

[0078] Exemplarily, the powder detection system further includes a gravity sensor arranged at the bottom of the carrying part. The gravity sensor is communicatively connected to the controller. The controller can determine that the powder to be detected has been placed in the loading part when the gravity sensor detects the gravity data, and then execute the step of controlling the movement of the material-carrying mechanism.

[0079] S220, when the powder to be inspected on the material loading mechanism reaches the position of the electromagnetic wave generator, the electromagnetic wave generator is controlled to emit an electromagnetic wave signal to the powder to be inspected; the electromagnetic wave signal is used to heat up the metal particles in the powder to be inspected.

[0080] The metal particles in the powder to be inspected are usually metal particles mixed into the powder to be inspected, and are foreign objects that need to be removed. The electromagnetic wave generator can radiate electromagnetic wave signals to the outside through an internal antenna. For example, the antenna can be a horn antenna or a microstrip patch antenna.

[0081] It should be noted that the response characteristics of other components in the powder to be tested and the metal particles to electromagnetic wave signals are different. Metal particles will produce a "skin effect" under the action of electromagnetic wave signals, that is, the signal energy is mainly concentrated on the surface of the metal particles, resulting in eddy currents on the surface. These eddy currents will quickly convert into heat, thereby causing the temperature of the metal particles to rise rapidly, while the temperature of other components in the powder to be tested changes less, causing the metal particles in the powder to be tested to show significant thermal sensitivity differences from other components. This application utilizes this thermal sensitivity difference to detect metal particles in the powder to be tested. Moreover, even if the particle size of the metal particles is very small, it can also show significant thermal sensitivity differences, thereby improving the detection sensitivity, and can achieve the detection of metal particles with a particle size ≥50μm.

[0082] Optionally, the controller can determine whether the powder to be inspected on the loading mechanism has reached the position of the electromagnetic wave generator, so that when it is determined that the powder has reached the position of the electromagnetic wave generator, the electromagnetic wave generator emits an electromagnetic wave signal to the powder to be inspected according to preset parameters. The preset parameters may include the output power of the electromagnetic wave generator and the frequency band of the electromagnetic wave signal. The frequency band of the electromagnetic wave signal matches the metal type of the metal particles.

[0083] Optionally, the controller can form a closed-loop feedback with the electromagnetic wave generator through a voltage-controlled oscillator (VCO), and apply a tuning voltage to the VCO according to the resonance characteristics of the metal particles to be detected (such as metal iron Fe / copper Cu), so that the frequency band of the electromagnetic wave signal output by the electromagnetic wave generator matches the electromagnetic response frequency of the metal particles to be detected.

[0084] Exemplarily, to determine whether the powder to be inspected on the loading mechanism reaches the position of the electromagnetic wave generator, the controller may start timing after determining that the powder to be inspected is placed in the loading part, and determine that the powder to be inspected on the loading mechanism reaches the position of the electromagnetic wave generator when the timing duration reaches the first preset duration; otherwise, it is determined that the powder has not reached. Among them, the first preset duration t1 is determined based on the moving speed v of the loading part and the vertical distance L1 between the starting point of the loading part and the electromagnetic wave generator, such as t1 = L1 / v. The powder detection system may further include a camera disposed at the position of the electromagnetic wave generator, and the camera is communicatively connected to the controller. The controller may determine that the powder to be inspected reaches the position of the electromagnetic wave generator when the image captured by the camera includes the powder to be inspected; otherwise, when the powder to be inspected is not included in the image, it is determined that the powder to be inspected has not reached the position of the electromagnetic wave generator.

[0085] S230. When the powder to be inspected on the loading mechanism reaches the position of the infrared detector, obtain the infrared signal generated by the powder to be inspected received by the infrared detector.

[0086] Among them, the metal particles and other components in the powder to be inspected both radiate infrared signals, but the temperatures are different, the radiation energies are different, and the intensities of the radiated infrared signals are correspondingly different. The higher the temperature, the greater the radiation energy, and the greater the intensity of the radiated infrared signal.

[0087] Optionally, after the electromagnetic wave generator emits an electromagnetic wave signal to the powder to be inspected, the controller may determine whether the powder to be inspected on the loading mechanism reaches the position of the infrared detector, so as to turn on the infrared detector when it is determined that the powder reaches the position of the infrared detector, and obtain the infrared signal generated by the powder to be inspected received by the infrared detector.

[0088] Exemplarily, to determine whether the powder to be inspected on the loading mechanism reaches the position of the infrared detector, similar to determining whether the powder to be inspected on the loading mechanism reaches the position of the electromagnetic wave generator, the controller may start timing after determining that the powder to be inspected on the loading mechanism reaches the position of the infrared detector, and determine that the powder to be inspected on the loading mechanism reaches the position of the infrared detector when the timing duration reaches the second preset duration; otherwise, it is determined that the powder has not reached. Among them, the second preset duration t2 is determined based on the moving speed v of the loading part and the vertical distance L2 between the starting point of the electromagnetic wave generator and the infrared detector, such as t2 = L2 / v. The powder detection system may further include a camera disposed at the position of the infrared detector, and the camera is communicatively connected to the controller. The controller may determine that the powder to be inspected reaches the position of the infrared detector when the image captured by the camera includes the powder to be inspected; otherwise, when the powder to be inspected is not included in the image, it is determined that the powder to be inspected has not reached the position of the infrared detector.

[0089] S240. Determine the detection result of metal particles in the powder to be detected based on the infrared signal.

[0090] Optionally, the controller can draw an infrared signal intensity distribution map of the powder to be detected in the area to be detected according to the signal intensity of the infrared signal obtained by the infrared detector, so as to determine the detection result of metal particles in the powder to be detected according to the signal intensity at different position points in the infrared signal intensity distribution map.

[0091] Exemplarily, the position area in the infrared signal intensity distribution map where the signal intensity is greater than the preset intensity threshold is the metal particles in the powder to be detected. The controller can determine whether there is a position area in the infrared signal intensity distribution map where the signal intensity is greater than the preset intensity threshold, and if so, determine that the detection result of metal particles in the powder to be detected is that there are metal particles; conversely, if not, determine that the detection result of metal particles in the powder to be detected is that there are no metal particles.

[0092] In the embodiment of the present application, according to the signal coverage range of the electromagnetic wave generator and the preset moving duration of the powder to be detected within the signal coverage range, the reference moving speed of the material loading mechanism is determined, and the material loading mechanism for carrying the powder to be detected is controlled to move at the reference moving speed. When the powder to be detected on the material loading mechanism reaches the position of the electromagnetic wave generator, the electromagnetic wave generator is controlled to emit an electromagnetic wave signal to the powder to be detected, and when the powder to be detected on the material loading mechanism reaches the position of the infrared detector, the infrared signal generated by the powder to be detected received by the infrared detector is obtained, so as to determine the detection result of metal particles in the powder to be detected according to the infrared signal; the electromagnetic wave signal is used to heat up the metal particles in the powder to be detected; in the above method, the material loading mechanism is controlled to move to transport the powder to be detected to pass through the electromagnetic wave generator first, the electromagnetic wave generator radiates the electromagnetic wave signal to the powder to be detected, then passes through the infrared detector, the infrared signal generated by the powder to be detected is obtained through the infrared detector, and the detection result of metal particles in the powder to be detected is determined based on the obtained infrared signal. The obtained infrared signal can be used to reflect the thermal sensitivity difference between the metal particles and other components in the powder to be detected under the action of the electromagnetic wave signal. The metal particles are sensitive to the electromagnetic wave signal, and significant thermal sensitivity differences are generated between other components under the action of the electromagnetic wave signal. The significant thermal sensitivity difference is used to detect the metal particles in the powder, which improves the detection sensitivity and correspondingly reduces the risks of missed detection and misdetection.

[0093] To obtain the detection result of metal particles in the powder to be detected, in one embodiment, as Figure 3 shown, the above S240. Determine the detection result of metal particles in the powder to be detected based on the infrared signal, includes:

[0094] S310. Determine the temperature distribution map of the powder to be detected according to the infrared signal; the temperature distribution map includes the temperatures at different position points in the powder to be detected.

[0095] Among them, the temperature distribution diagram of the powder to be detected can be the infrared thermal image of the powder to be detected.

[0096] Optionally, the controller can receive the infrared signals generated at different position points on the powder to be detected collected by the infrared detector, and convert the signal intensities of the infrared signals at different position points into temperature values according to the pre-calibrated correspondence between the signal intensity and the temperature, obtain the temperature values of different position points on the powder to be detected, and then use the correspondence between the preset temperature range and the color to represent the temperature values of different position points on the powder to be detected with corresponding colors, thereby forming the temperature distribution diagram of the powder to be detected.

[0097] S320. Determine the detection result of metal particles in the powder to be detected according to the temperature distribution diagram.

[0098] Among them, the detection result of metal particles in the powder to be detected is used to characterize whether there are metal particles in the powder to be detected.

[0099] Optionally, after obtaining the temperature distribution diagram of the powder to be detected, the controller can analyze and process the temperature distribution diagram to determine whether there is an area in the temperature distribution diagram whose color is different from the color of the surrounding area, and if so, determine that the detection result of metal particles in the powder to be detected is that there are metal particles; conversely, if not, determine that the detection result of metal particles in the powder to be detected is that there are no metal particles.

[0100] In the embodiments of the present application, the temperature distribution diagram of the powder to be detected is determined according to the infrared signal, and the detection result of metal particles in the powder to be detected is determined according to the temperature distribution diagram; the temperature distribution diagram includes the temperatures of different position points in the powder to be detected; in the above method, the temperature distribution diagram of the powder to be detected is determined according to the infrared signal, and then the detection result of metal particles in the powder to be detected is determined based on the temperature distribution diagram. The process of determining the temperature distribution diagram according to the infrared signal is simple and easy to be implemented by a program, which can improve the detection efficiency, and the temperature distribution diagram can accurately reflect the temperature distribution of the powder to be detected, which helps to subsequently determine whether there are metal particles with obvious thermal sensitivity differences from other components in the powder to be detected, and synchronously improves the detection reliability.

[0101] To simplify the process of determining the detection result, in one of the embodiments, as Figure 4 shown, the above S320. Determine the detection result of metal particles in the powder to be detected according to the temperature distribution diagram, includes:

[0102] S410. When there is an abnormal area in the temperature distribution diagram, determine that the detection result is that there are metal particles in the powder to be detected; the abnormal area represents the area formed by the position points where the temperature is higher than the temperature threshold.

[0103] Among them, there may be no abnormal area in the temperature distribution map, or there may be one or more abnormal areas.

[0104] Optionally, after obtaining the temperature distribution map of the powder to be detected, the controller can compare the temperature at each position point with a preset temperature threshold, regard the area formed by the position points with a temperature higher than the temperature threshold in the temperature distribution map as an abnormal area, and when there is an abnormal area in the temperature distribution map, determine that the detection result is that there are metal particles in the powder to be detected.

[0105] S420. When there is no abnormal area in the temperature distribution map, determine that the detection result is that there are no metal particles in the powder to be detected.

[0106] Optionally, after obtaining the temperature distribution map of the powder to be detected, the controller can compare the temperature at each position point with a preset temperature threshold, regard the area formed by the position points with a temperature higher than the temperature threshold in the temperature distribution map as an abnormal area, and when there is no abnormal area in the temperature distribution map, determine that the detection result is that there are no metal particles in the powder to be detected.

[0107] In the embodiments of the present application, when there is an abnormal area in the temperature distribution map, it is determined that the detection result is that there are metal particles in the powder to be detected; when there is no abnormal area in the temperature distribution map, it is determined that the detection result is that there are no metal particles in the powder to be detected; the abnormal area represents the area formed by the position points with a temperature higher than the temperature threshold; in the above method, whether there is an abnormal area in the temperature distribution map is determined based on the temperature comparison method, and then the detection result is determined, without complex analysis and processing of the temperature distribution map, simplifying the process of determining the detection result and correspondingly improving the detection efficiency.

[0108] To improve the detection richness, in one of the embodiments, as Figure 5 shown, the above method further includes:

[0109] S510. When the detection result is that there are metal particles in the powder to be detected, determine the number and / or size of the abnormal area according to the temperature distribution map.

[0110] Among them, one abnormal area corresponds to one metal particle. The number of abnormal areas is the number of metal particles, and the size of the abnormal area is the size of the metal particle. Exemplarily, the size of the abnormal area can be characterized by the length and width of the abnormal area, or by the maximum diameter of the abnormal area.

[0111] Optionally, when the detection result is that there are metal particles in the powder to be detected, the controller can further extract each abnormal area in the temperature distribution map to count the number of abnormal areas, and can also measure the maximum diameter of each abnormal area as the size of the abnormal area.

[0112] S520. Determine the quantity and / or size of the abnormal area as the metal particle information of the powder to be inspected.

[0113] Optionally, after obtaining the quantity of the abnormal areas in the temperature distribution map and / or the size of each abnormal area, the controller may record and store these data information as the metal particle information of the powder to be inspected, and may also send it to the display end for display.

[0114] Exemplarily, the controller may send the temperature distribution map of the powder to be inspected to the display end for display, and when the detection result is that there are metal particles in the powder to be inspected, display the labels of each abnormal area and the size of the abnormal area in the temperature distribution map of the display end, that is, display the metal particle information of the powder to be inspected in the image distribution map on the display end.

[0115] In the embodiments of the present application, when the detection result is that there are metal particles in the powder to be inspected, determine the quantity and / or size of the abnormal area according to the temperature distribution map, and determine the quantity and / or size of the abnormal area as the metal particle information of the powder to be inspected; in the above method, when detecting the existence of metal particles, determine the quantity and / or size of the abnormal area based on the temperature distribution map as the metal particle information, and further obtain more dimensional information including the quantity and / or size of the metal particles in the powder to be inspected on the basis of detecting the existence of metal particles, thereby improving the detection richness.

[0116] The detection result may also be fed back to adjust the powder detection system. In one embodiment, as Figure 6 shown, the above method further includes:

[0117] S610. Adjust the working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism according to the detection result.

[0118] Among them, the working parameters of the electromagnetic wave generator may include the output voltage, output current, output power, frequency band of the electromagnetic wave signal emitted by the electromagnetic wave generator, and so on.

[0119] Optionally, after obtaining the detection result of the powder to be inspected, the controller may determine the adjustment strategy corresponding to the obtained detection result according to the correspondence between the preset detection result and the adjustment strategy, and adjust the working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism according to the adjustment strategy.

[0120] S620. Based on the adjusted working parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism, detect the metal particles of the powder to be inspected carried on the material loading mechanism.

[0121] Optionally, after obtaining the adjusted operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism, the controller can continue to detect the metal particles in the powder to be inspected carried on the material loading mechanism according to the adjusted operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism.

[0122] Exemplarily, the controller can adopt the adjusted operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism to continue detecting the metal particles in the powder to be inspected carried on the subsequent transported material loading mechanism; the user can also collect the powder to be inspected that will be detected by using the operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism before adjustment, and place the collected powder to be inspected on the material loading mechanism again, so as to use the adjusted operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism to perform secondary detection on the powder to be inspected carried on the material loading mechanism.

[0123] In the embodiments of the present application, the operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism are adjusted according to the detection results, and based on the adjusted operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism, the metal particles in the powder to be inspected carried on the material loading mechanism are detected; in the above method, feedback adjustment is performed on the operating parameters of the electromagnetic wave generator and / or the moving speed of the material loading mechanism in the powder detection system based on the detection results to improve the detection results, thereby improving the reliability and accuracy of the detection results.

[0124] The operating parameters of the electromagnetic wave generator include the output power. For the adjustment of the operating parameters of the electromagnetic wave generator, in one embodiment, as Figure 7 shown, the adjustment of the operating parameters of the electromagnetic wave generator according to the detection results in S610 above includes:

[0125] S710. When the detection result is that there are metal particles in the powder to be inspected, keep the output power unchanged.

[0126] Among them, the detection result that there are metal particles in the powder to be inspected indicates that the current output power of the electromagnetic wave generator is appropriate enough to significantly heat up the metal particles to successfully detect the metal particles in the powder to be inspected.

[0127] Optionally, the material loading mechanism continuously transports the powder to be inspected, and the controller can read the detection results in real time or periodically, and when the detection result is that there are metal particles in the powder to be inspected, keep the current output power of the electromagnetic wave generator unchanged.

[0128] S720. When the detection result is that there are no metal particles in the powder to be inspected, increase the output power.

[0129] Among them, the detection result is that there are no metal particles in the powder to be detected. It may be that there are indeed no metal particles in the powder to be detected, or it may be that the current output power of the electromagnetic wave generator is too small to significantly heat up the metal particles and thus fail to successfully detect the metal particles in the powder to be detected.

[0130] Optionally, the material loading mechanism continuously transports the powder to be detected. The controller can read the detection result in real time or periodically, and when the detection result is that there are no metal particles in the powder to be detected, increase the current output power of the electromagnetic wave generator according to a preset ratio or preset increment, such as increasing by 2%.

[0131] Exemplarily, the controller can increase the output power when the detection results of continuously detecting a preset number of times or continuously detecting for a preset duration are both that there are no metal particles. It can also stop increasing the output power when increasing a preset number of times or when the output power reaches a preset power threshold, such as keeping the current output power unchanged.

[0132] In the embodiments of the present application, the operating parameters of the electromagnetic wave generator include the output power. When the detection result is that there are metal particles in the powder to be detected, keep the output power unchanged; when the detection result is that there are no metal particles in the powder to be detected, increase the output power. In the above method, the output power of the electromagnetic wave generator is adjusted differently based on different detection results, so as to keep the output power unchanged when metal particles are detected, reduce unnecessary power consumption, and when metal particles are not detected, increase the output power to promote the heating of metal particles in the subsequent powder to be detected, reduce the missed detection caused by insufficient output power of the electromagnetic wave generator, and thus improve the comprehensiveness and accuracy of detection.

[0133] Regarding the adjustment of the moving speed of the material loading mechanism, in one embodiment, as Figure 8 shown, the adjustment of the moving speed of the material loading mechanism according to the detection result in S610 above includes:

[0134] S810. When the detection result is that there are metal particles in the powder to be detected, keep the moving speed unchanged.

[0135] Among them, the detection result that there are metal particles in the powder to be detected also indicates that the current moving speed of the material loading mechanism is appropriate, which is sufficient to enable the metal particles to be fully irradiated by the electromagnetic wave signal within the signal coverage range of the electromagnetic wave generator and thus significantly heat up to successfully detect the metal particles in the powder to be detected.

[0136] Optionally, the material loading mechanism continuously transports the powder to be detected. The controller can read the detection result in real time or periodically, and when the detection result is that there are metal particles in the powder to be detected, keep the current moving speed of the material loading mechanism unchanged.

[0137] S820. When it is detected that there are no metal particles in the powder to be detected, adjust the moving speed of the material loading mechanism according to the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator.

[0138] Among them, the detection result that there are no metal particles in the powder to be detected may be that there are indeed no metal particles in the powder to be detected, or it may be that the current moving speed of the material loading mechanism is too fast, and the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator is too short, so that the metal particles in the powder to be detected are not sufficiently irradiated by the electromagnetic wave signal and are not hot enough to show an obvious temperature rise, so the metal particles in the powder to be detected cannot be successfully detected.

[0139] Optionally, the material loading mechanism continuously transports the powder to be detected. The controller can read the detection result in real time or periodically, and when the detection result is that there are no metal particles in the powder to be detected, reduce the moving speed of the material loading mechanism to increase the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator, so that the metal particles in the powder to be detected are sufficiently irradiated by the electromagnetic wave signal and show an obvious temperature rise, which is convenient for subsequent successful detection of the metal particles in the powder to be detected. The controller can adjust the moving speed of the material loading mechanism based on the moving duration of the powder to be detected within the signal coverage range in the current situation, that is, reduce the moving speed of the material loading mechanism.

[0140] In an optional embodiment, as Figure 9 shown, adjusting the moving speed of the material loading mechanism according to the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator in the above S820 includes:

[0141] S910. Determine a reference duration according to the moving duration; the reference duration is greater than the moving duration.

[0142] Optionally, the controller can directly read the moving duration in the current situation, increase this moving duration according to a preset ratio or preset increment, and use the increased moving duration as the reference duration.

[0143] S920. Determine the target moving speed according to the reference duration and the signal coverage range.

[0144] Optionally, taking the coverage width of the electromagnetic wave generator in the moving direction of the powder to be detected as an example to represent the signal coverage range, the controller can use this coverage width as the moving distance of the material loading mechanism, and use this reference duration as the moving duration of the material loading mechanism to determine the new moving speed of the material loading mechanism as the target moving speed.

[0145] Exemplarily, taking the coverage width L of the electromagnetic wave generator and the reference duration T' as an example, the target moving speed V' of the material loading mechanism = L / T'.

[0146] S930. Control the material loading mechanism to move at the target moving speed.

[0147] Optionally, after obtaining the target moving speed of the material loading mechanism, the controller can adjust the moving speed of the material loading mechanism to the target moving speed to control the material loading mechanism to move at this target moving speed.

[0148] It should be noted that when the reference duration is greater than the moving duration in the current situation and the signal coverage range of the electromagnetic wave generator remains unchanged, that is, the moving distance remains unchanged and the moving duration increases, the moving speed decreases. That is, the determined target moving speed is less than the moving speed of the material loading mechanism in the current situation.

[0149] Exemplarily, the controller can reduce the moving speed when the detection results of continuously detecting a preset number of times or continuously detecting for a preset duration are all that there are no metal particles. It can also stop reducing the moving speed when the reduction reaches a preset number of times or the moving speed reaches a preset speed threshold, such as keeping the current moving speed unchanged.

[0150] It should be noted that when the detection result is that there are metal particles in the powder to be detected and both the working parameters of the electromagnetic wave generator and the moving speed of the material loading mechanism are adjusted, the adjustments can be made simultaneously or sequentially.

[0151] Exemplarily, when the detection result is that there are no metal particles in the powder to be detected, the controller can first increase the output power of the electromagnetic wave generator. When the output power is higher than the preset power threshold or the detection results of continuously detecting a preset number of times / continuously detecting for a preset duration are still that there are no metal particles, then reduce the moving speed of the material loading mechanism until the moving speed is lower than the preset speed threshold, or the detection results of continuously detecting a preset number of times / continuously detecting for a preset duration are still that there are no metal particles, or the detection result is that there are metal particles in the powder to be detected. Similarly, the moving speed of the material loading mechanism can be first controlled to be reduced. When the moving speed is lower than the preset power threshold or the detection results of continuously detecting a preset number of times / continuously detecting for a preset duration are still that there are no metal particles, then increase the output power of the electromagnetic wave generator until the output power is higher than the preset power threshold, or the detection results of continuously detecting a preset number of times / continuously detecting for a preset duration are still that there are no metal particles, or the detection result is that there are metal particles in the powder to be detected.

[0152] In the embodiments of the present application, when the detection result indicates that there are metal particles in the powder to be detected, the moving speed is kept unchanged. When the detection result indicates that there are no metal particles in the powder to be detected, the moving speed of the material loading mechanism is adjusted according to the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator. Specifically, a reference duration longer than the moving duration can be determined based on the moving duration, and the target moving speed can be determined according to the reference duration and the signal coverage range, so as to control the material loading mechanism to move at the target moving speed. In the above method, different adjustments are made to the moving speed of the material loading mechanism based on different detection results, so that when metal particles are detected, the moving speed is kept unchanged to reduce unnecessary power consumption, and when no metal particles are detected, the moving speed is reduced to increase the moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator, so that the metal particles in the powder to be detected are significantly heated after being fully irradiated by the electromagnetic wave signal, reducing the missed detection caused by the too short moving duration of the powder to be detected within the signal coverage range of the electromagnetic wave generator, thereby improving the comprehensiveness and accuracy of the detection.

[0153] For the convenience of understanding by those skilled in the art, the following provides a detailed introduction to the powder detection method provided by the present application, as Figure 10 shown, the method may include:

[0154] S1001. Determine the reference moving speed of the material loading mechanism according to the signal coverage range of the electromagnetic wave generator and the preset moving duration of the powder to be detected within the signal coverage range; the material loading mechanism is used to carry the powder to be detected; the electromagnetic wave generator is arranged facing the material loading mechanism;

[0155] S1002. Control the material loading mechanism to move at the reference moving speed;

[0156] S1003. When the powder to be detected on the material loading mechanism reaches the position of the electromagnetic wave generator, control the electromagnetic wave generator to emit an electromagnetic wave signal to the powder to be detected; the electromagnetic wave signal is used to heat the metal particles in the powder to be detected;

[0157] S1004. When the powder to be detected on the material loading mechanism reaches the position of the infrared detector, obtain the infrared signal generated by the powder to be detected received by the infrared detector; the infrared detectors are all arranged facing the material loading mechanism;

[0158] S1005. Determine the temperature distribution map of the powder to be detected according to the infrared signal; the temperature distribution map includes the temperatures of different position points in the powder to be detected;

[0159] S1006. When there is an abnormal area in the temperature distribution map, determine that the detection result is that there are metal particles in the powder to be detected; the abnormal area represents the area formed by the position points where the temperature is higher than the temperature threshold;

[0160] S1007. When there is no abnormal area in the temperature distribution map, it is determined that there are no metal particles in the powder to be detected;

[0161] S1008. When it is detected that there are metal particles in the powder to be detected, determine the number and / or size of the abnormal area according to the temperature distribution map;

[0162] S1009. Determine the number and / or size of the abnormal area as the metal particle information of the powder to be detected;

[0163] S1010. When it is detected that there are metal particles in the powder to be detected, keep the output power of the electromagnetic wave generator and the moving speed of the material loading mechanism unchanged;

[0164] S1011. When it is detected that there are no metal particles in the powder to be detected, increase the output power of the electromagnetic wave generator, and / or determine a reference duration longer than the moving duration according to the moving duration, and determine a target moving speed according to the reference duration and the signal coverage range, and control the material loading mechanism to move at the target moving speed.

[0165] It should be noted that for the descriptions in S1001 - S1011 above, reference can be made to the relevant descriptions in the above embodiments, and their effects are similar, so they will not be elaborated here in this embodiment.

[0166] It should be understood that although the steps in the flowcharts involved in the above - mentioned embodiments are shown in sequence according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless there is a clear indication in this article, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above - mentioned embodiments may include multiple steps or multiple stages. These steps or stages are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be executed alternately or in turn with at least a part of other steps or steps or stages in other steps.

[0167] In one embodiment, as Figure 11 shown, a powder detection device is provided, including: a movement control module 1101, an electromagnetic control module 1102, an infrared control module 1103, and a result determination module 1104; where:

[0168] The movement control module 1101 is used to determine the reference movement speed of the material loading mechanism according to the signal coverage range of the electromagnetic wave generator and the preset movement duration of the powder to be detected within the signal coverage range, and control the material loading mechanism to move at the reference movement speed; the material loading mechanism is used to carry the powder to be detected;

[0169] The electromagnetic control module 1102 is configured to control the electromagnetic wave generator to emit an electromagnetic wave signal to the powder to be inspected when the powder to be inspected on the loading mechanism reaches the position of the electromagnetic wave generator; the electromagnetic wave signal is used to heat up the metal particles in the powder to be inspected.

[0170] The infrared control module 1103 is configured to obtain the infrared signal generated by the powder to be inspected received by the infrared detector when the powder to be inspected on the loading mechanism reaches the position of the infrared detector.

[0171] The result determination module 1104 is configured to determine the detection result of the metal particles in the powder to be inspected according to the infrared signal.

[0172] Each module in the above powder detection device can be implemented in whole or in part by software, hardware, and their combination. Each of the above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory in the computer device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0173] In one embodiment, a powder detection system is provided, as Figure 1 shown. The powder detection system 100 includes: a controller 101, and an electromagnetic wave generator 102, an infrared detector 103, and a loading mechanism 104 connected to the controller 101; the electromagnetic wave generator 102 and the infrared detector 103 are both arranged facing the loading mechanism 104; the controller 101 is configured to implement the steps of any one of the above powder detection methods.

[0174] It should be noted that the powder detection system may further include a temperature sensor and an overload protector. The temperature sensor can collect the temperature of any component in the powder detection system and the powder to be inspected. The controller can compare the collected temperature with a temperature threshold, so as to cut off the power supply of the powder detection system through the overload protector when any temperature is higher than the temperature threshold, so as to improve the safe operation of the system.

[0175] Those skilled in the art can understand that Figure 1 the structure shown in

[0176] is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have a different component layout.

[0177] In one embodiment, a computer program product is provided, including a computer program which, when executed by a processor, implements the steps of any one of the above-mentioned powder detection methods.

[0178] Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memories. Non-volatile memories can include read-only memory (ROM), magnetic tapes, floppy disks, flash memories, optical memories, high-density embedded non-volatile memories, resistive random access memories (ReRAM), magnetoresistive random access memories (MRAM), ferroelectric random access memories (FRAM), phase change memories (PCM), graphene memories, etc. Volatile memories can include random access memory (RAM) or external cache memories, etc. By way of illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The databases involved in the embodiments provided in the present application can include at least one of relational databases and non-relational databases. Non-relational databases can include distributed databases based on blockchain, etc., without limitation. The processors involved in the embodiments provided in the present application can be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, data processing logics based on quantum computing, etc., without limitation.

[0179] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0180] The above-described embodiments merely represent several implementation manners of the present application. The description thereof is relatively specific and detailed, but it should not be construed as a limitation on the patent scope of the present application. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present application, several modifications and improvements can still be made, and these all fall within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the appended claims.

Claims

1. A powder material detection method, characterized in that: A controller applied to a powder material detection system, the powder material detection system comprising an electromagnetic wave generator, an infrared detector and a material loading mechanism connected to the controller, the electromagnetic wave generator and the infrared detector are both arranged toward the material loading mechanism; the method comprises: According to the signal coverage range of the electromagnetic wave generator and the preset movement time of the powder to be inspected within the signal coverage range, the reference movement speed of the loading mechanism is determined, and the loading mechanism is controlled to move according to the reference movement speed; the loading mechanism is used to carry the powder to be inspected; When the powder to be tested reaches the position of the electromagnetic wave generator on the material loading mechanism, the electromagnetic wave generator is controlled to emit an electromagnetic wave signal to the powder to be tested; the electromagnetic wave signal is used to heat up the metal particles in the powder to be tested; When the powder to be inspected on the material loading mechanism reaches the position of the infrared detector, an infrared signal generated by the powder to be inspected and received by the infrared detector is obtained; The detection result of the metal particles in the powder to be detected is determined according to the infrared signal.

2. The method according to claim 1, characterized in that Determining the detection result of the metal particles in the powder to be detected according to the infrared signal includes: Determine a temperature distribution diagram of the powder to be tested according to the infrared signal; the temperature distribution diagram includes the temperatures of different positions in the powder to be tested; The detection result of the metal particles in the powder to be detected is determined according to the temperature distribution diagram.

3. The method according to claim 2, characterized in that Determining the detection result of the metal particles in the powder to be tested according to the temperature distribution diagram includes: In the case where there is an abnormal area in the temperature distribution diagram, determining that the detection result is that metal particles exist in the powder to be detected; the abnormal area represents an area formed by position points where the temperature is higher than the temperature threshold; When there is no abnormal area in the temperature distribution diagram, it is determined that the detection result is that there are no metal particles in the powder to be tested.

4. The method according to claim 3, characterized in that The method further comprises: When the detection result indicates that metal particles exist in the powder to be detected, determining the number and / or size of the abnormal area according to the temperature distribution diagram; The number and / or size of the abnormal areas are determined as the metal particle information of the powder to be tested.

5. The method according to any one of claims 1 to 3, characterized in that: The method further comprises: adjusting the working parameters of the electromagnetic wave generator and / or the moving speed of the loading mechanism according to the detection result; Based on the adjusted working parameters of the electromagnetic wave generator and / or the moving speed of the material carrying mechanism, the metal particles of the powder to be tested carried by the material carrying mechanism are detected.

6. The method according to claim 5, characterized in that The working parameters of the electromagnetic wave generator include output power; adjusting the working parameters of the electromagnetic wave generator according to the detection result includes: When the detection result indicates that metal particles exist in the powder to be detected, keeping the output power unchanged; When the detection result is that no metal particles exist in the powder to be detected, the output power is increased.

7. The method according to claim 5, characterized in that Adjusting the moving speed of the loading mechanism according to the detection result includes: When the detection result indicates that metal particles exist in the powder to be detected, maintaining the moving speed unchanged; When the detection result shows that no metal particles exist in the powder to be tested, the moving speed of the loading mechanism is adjusted according to the moving time of the powder to be tested within the signal coverage range of the electromagnetic wave generator.

8. The method according to claim 7, characterized in that The adjusting the moving speed of the loading mechanism according to the moving time of the powder to be inspected within the signal coverage range of the electromagnetic wave generator includes: Determine a reference duration according to the moving duration; the reference duration is greater than the moving duration; Determine the target moving speed according to the reference duration and the signal coverage range; The loading mechanism is controlled to move according to the target moving speed.

9. A powder material detection system, characterized in that: The powder detection system includes: a controller, and an electromagnetic wave generator, an infrared detector and a loading mechanism connected to the controller; the electromagnetic wave generator and the infrared detector are both arranged toward the loading mechanism; the controller is used to implement the steps of the method described in any one of claims 1 to 8.

10. A powder material detection device, characterized in that: The powder material detection device comprises: A mobile control module, used to determine a reference moving speed of a loading mechanism according to a signal coverage range of an electromagnetic wave generator and a preset moving time of the powder to be inspected within the signal coverage range, and control the loading mechanism to move at the reference moving speed; the loading mechanism is used to carry the powder to be inspected; An electromagnetic control module is used to control the electromagnetic wave generator to emit an electromagnetic wave signal to the powder to be tested when the powder to be tested on the material loading mechanism reaches the position of the electromagnetic wave generator; the electromagnetic wave signal is used to heat the metal particles in the powder to be tested; An infrared control module is used to obtain an infrared signal generated by the powder to be inspected and received by the infrared detector when the powder to be inspected on the material loading mechanism reaches the position of the infrared detector; The result determination module is used to determine the detection result of the metal particles in the powder to be detected according to the infrared signal.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

12. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 8 are implemented.

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