Silver-coated copper powder preparation drying monitoring system based on multi-source big data support

Abstract

The invention discloses a silver-coated copper powder preparation drying monitoring system based on multi-source big data support. Comprising a null value oven drying temperature multi-range pre-detection module, a silver-coated copper powder drying multi-stage temperature intelligent adjustment module, a silver-coated copper powder real-time drying condition regional analysis module, a silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module, a silver-coated copper powder drying parameter self-adaptive intelligent regulation and control module and a central control module. The device is used for conducting multi-stage temperature control on the silver-coated copper powder in the drying oven, analyzing dynamic temperature changes of the silver-coated copper powder in different temperature control environments in real time and conducting comprehensive temperature analysis and accurate adjustment on the silver-coated copper powder in combination with the drying state of the silver-coated copper powder, so that the surface of the silver-coated copper powder is heated consistently, a local high-temperature area is avoided, and follow-up machining is facilitated.

Description

Technical Field

[0001] The present invention relates to the field of silver-coated copper powder preparation, and in particular to a silver-coated copper powder preparation and drying monitoring system based on multi-source big data support. Background Art

[0002] Silver-coated copper powder is a composite metal powder with copper as the core and silver as the coating layer. It is widely used in electronic conductive pastes, electromagnetic shielding materials and other fields. Taking advantage of copper's electrical and thermal properties, as well as its relatively low price, a uniform thickness of silver film is introduced on the copper surface in a certain proportion, so that the resulting particles not only have the physical and chemical properties of the original copper, but also have the excellent metallic properties of the silver plating. Based on the phenomenon of silver migration to copper above 350°C, which exposes the copper core and reduces the physical and chemical properties of the silver paste's electrical properties, silver-coated copper powder is basically used in the field of low-temperature silver paste.

[0003] As a key link in the preparation process, drying directly affects the powder's antioxidant properties, dispersibility, and electrical conductivity of the final product. Its performance is highly dependent on the coating quality and the physical state of the powder. Drying is one of the key steps in the preparation process.

[0004] During the electroless plating or wet coating process of silver-coated copper powder, residual moisture or organic solvents may remain on the powder surface, which needs to be completely removed by drying to avoid unstable performance in subsequent applications. Oxidation will significantly reduce the conductivity and stability of the material, especially in high temperature, humid or oxygen-containing environments. During the drying process, multi-dimensional coordinated control is required to achieve the goal of anti-oxidation; and when the local temperature exceeds the oxidation threshold of copper, the copper core reacts with oxygen or residual water vapor to form copper oxide or cuprous oxide.

[0005] At present, the drying temperature of the silver-coated copper powder is easily uneven inside the drying box, resulting in local high temperatures. The high-temperature areas may cause micro-melting of the silver layer surface, resulting in adhesion between particles to form hard agglomerates. Agglomerates are difficult to disperse, affecting the fluidity and filling density of the powder. At the same time, the silver-coated copper powder has a small particle size, and local high temperatures may ignite suspended dust, especially in an oxygen environment. The risk is higher. Local high temperatures are a key risk point in the silver-coated copper powder drying process, which can cause oxidation, silver layer damage, agglomeration and safety hazards. It needs to be solved through multi-dimensional collaborative solutions such as equipment optimization, uniform heating, atmosphere control, process improvement, dynamic temperature control, antioxidant addition and strict monitoring, online temperature measurement, and oxygen content detection.

[0006] The present application aims to perform multi-stage temperature control on the silver-coated copper powder inside the oven, to analyze in real time the dynamic temperature changes of the silver-coated copper powder under different temperature control environments, and to perform comprehensive temperature analysis and precise adjustment of the silver-coated copper powder in combination with the drying status of the silver-coated copper powder, so that the surface of the silver-coated copper powder is heated uniformly, avoiding local high-temperature areas, and facilitating subsequent processing. Summary of the Invention

[0007] The purpose of the present invention is to provide a silver-coated copper powder preparation and drying monitoring system based on multi-source big data support to solve the problems in the prior art.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] A silver-coated copper powder preparation and drying monitoring system based on multi-source big data support, the system includes a multi-range pre-detection module for drying temperature of an empty oven, a multi-stage intelligent temperature adjustment module for drying silver-coated copper powder, a regional analysis module for real-time drying condition of silver-coated copper powder, a comprehensive monitoring and analysis module for multi-layer temperature of silver-coated copper powder, an adaptive intelligent control module for drying parameters of silver-coated copper powder, and a central control module, wherein the multi-range pre-detection module for drying temperature of an empty oven, the multi-stage intelligent temperature adjustment module for drying silver-coated copper powder, the regional analysis module for real-time drying condition of silver-coated copper powder, the comprehensive monitoring and analysis module for multi-layer temperature of silver-coated copper powder, and the adaptive intelligent control module for drying parameters of silver-coated copper powder are connected one by one and are all connected to the central control module;

[0010] The multi-range pre-detection module for the empty oven drying temperature is used to pre-detect the temperature inside an empty oven without silver-coated copper powder, and to mark the temperature differences at different drying positions inside the oven.

[0011] The multi-stage temperature intelligent adjustment module for drying silver-coated copper powder is used to perform second-order dynamic control of the internal temperature of the oven after placing the silver-coated copper powder, and monitor the real-time drying surface temperature of the silver-coated copper powder in real time;

[0012] The module for analyzing the real-time drying status of silver-coated copper powder by region is used to monitor the status of silver-coated copper powder in multiple regions at the first-order temperature, and to analyze and adjust the temperature inside the oven in multiple locations in real time based on the monitoring data;

[0013] The silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module is used to detect the contact temperature of the silver-coated copper powder at different depths inside the pallet at the second-order temperature, determine whether there is local high temperature, and analyze the frequency of silver-coated copper powder turning operations;

[0014] The adaptive intelligent control module for silver-coated copper powder drying parameters is used to optimize the recorded data according to the dynamic monitoring data of the silver-coated copper powder drying and the powder state of different batches of silver-coated copper powder, build a drying process database, and adaptively adjust the drying process database.

[0015] Further settings: The multi-range pre-detection module of the empty value oven drying temperature includes several temperature detection sensors, a multi-position detection sub-module of the internal temperature of the oven and a differentiated marking sub-module of the temperature ranges at different positions. The multi-position detection sub-module of the internal temperature of the oven is used to use several temperature detection sensors inside the oven to pre-detect the temperatures of different silver-coated copper powder tray setting range positions inside the oven, record the temperature of each tray range, and mark and feedback when there are differences in the temperatures of different trays. The differentiated marking sub-module of the temperature ranges at different positions is used to record the temperature differences of different tray positions, obtain the position of each heat source point inside the oven, compare the distance between each tray and the heat source point, and when the temperature of a certain tray range is lower than the average temperature inside the oven, and at the same time the distance from the heat source point is greater than the set threshold, it needs to be fed back to the remote PC to manually adjust the heat source position in advance.

[0016] Further settings: The multi-stage temperature intelligent adjustment module for drying silver-coated copper powder includes a second-stage temperature drying dynamic control submodule for silver-coated copper powder and a multi-region surface temperature differentiation monitoring submodule for silver-coated copper powder, a vacuum tester, and an oxygen analyzer. The second-stage temperature drying dynamic control submodule for silver-coated copper powder is used to heat the silver-coated copper powder in stages during the drying process according to different temperature ranges, including a dynamic drying stage and a drying stabilization stage. The temperature range and time range of the dynamic drying stage and the drying stabilization stage are set manually. The multi-region surface temperature differentiation monitoring submodule for silver-coated copper powder is used to combine a number of detection sensors inside the oven to perform real-time detection of the vacuum degree, oxygen concentration and surface temperature of the silver-coated copper powder on each tray inside the oven, and record the initial temperature of the silver-coated copper powder when it is placed in the tray, and analyze and record the heating rate of the surface temperature of the silver-coated copper powder in the set time period.

[0017] Further settings: The silver-clad copper powder real-time drying situation regional analysis module includes a silver-clad copper powder drying status monitoring sub-module and a silver-clad copper powder position temperature analysis and adjustment sub-module. The silver-clad copper powder drying status monitoring sub-module includes several visual cameras and vibration sensors. Several cameras observe the drying situation of the silver-clad copper powder on the tray inside the oven during the dynamic drying stage through the oven visual window and provide real-time feedback, including the agglomeration of the silver-clad copper powder and the local color change. The vibration sensor is set inside the oven to judge whether the silver-clad copper powder is agglomerated by the change of amplitude. A timer is set to sample the silver-clad copper powder inside the oven in different time periods to detect the real-time moisture content of the silver-clad copper powder. The silver-clad copper powder drying status monitoring sub-module records and reminds the moisture content and agglomeration of the silver-clad copper powder.

[0018] Further settings: The silver-coated copper powder position temperature analysis and regulation submodule is used to pre-detect the internal temperature of the oven in real time during the dynamic drying stage, and set the actual measured temperature inside the oven to U j, obtain the real-time surface temperature of the silver-coated copper powder on each tray during the dynamic drying stage, and set the surface temperature of each silver-coated copper powder to U1, U2, ..., U i The number of temperature detection sensors close to each support plate is m. The average surface temperature of each silver-coated copper powder is calculated and defined as Select the maximum surface temperature u of each silver-coated copper powder i max and minimum value u i min, calculate its temperature difference, namely ΔU, analyze the maximum, minimum and temperature difference of the surface temperature of each silver-coated copper powder, according to the formula:

[0019]

[0020] When the surface temperature of the silver-coated copper powder meets the above formula, the standard deviation threshold of the surface temperature of the silver-coated copper powder inside the oven is set to U σ , according to the formula:

[0021]

[0022] When it is detected that the surface temperature of the silver-coated copper powder meets the above formula, it is determined that there is no abnormality in the drying average temperature of the silver-coated copper powder inside the oven. When it does not meet the above formula, the minimum surface temperature of the silver-coated copper powder is extracted, the temperature of the heat source point nearby is monitored, and the temperature of the heat source point is controlled separately.

[0023] Further settings: the silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module includes a silver-coated copper powder flat multi-layer temperature monitoring sub-module and a silver-coated copper powder turning frequency analysis sub-module. The silver-coated copper powder flat multi-layer temperature monitoring sub-module includes a number of temperature probes. The temperature probes are set at different thicknesses of the silver-coated copper powder and different corners of the support plate. The temperature of the silver-coated copper powder at different thicknesses and positions in the drying and stabilization stage is detected and marked. The temperature of the silver-coated copper powder at different thicknesses from top to bottom in each support plate is set as U d1 、U d2 、U d3 ,...,U dt , where d1, d2, ..., dt are the different thicknesses of the temperature probe set on the silver-coated copper powder on the support plate. The positions of the silver-coated copper powder with different thicknesses are processed in descending order. When U dt >U dt-1 When , it means that the temperature of the upper layer thickness of the silver-coated copper powder is lower than the temperature of the lower layer thickness, which is marked as abnormal temperature. The temperature measuring point position of the temperature probe corresponding to the lower layer thickness temperature is extracted, and several temperature detection sensors are used to determine whether there is local high temperature at its position. The temperatures of different thicknesses of the silver-coated copper powder that are not abnormal after descending processing are recorded and sent to the silver-coated copper powder turning frequency analysis submodule for analysis.

[0024] Further settings: The silver-coated copper powder turning frequency analysis submodule is used to screen the temperature of each thickness of the silver-coated copper powder on the pallet, by artificially setting the temperature gradient threshold of different thicknesses from top to bottom on the pallet as U T , screen the temperature of the silver-coated copper powder at the top and bottom respectively, set the thickness of the silver-coated copper powder inside the support plate to D, according to the formula:

[0025]

[0026] When the temperatures of the top and bottom of the silver-coated copper powder on the pallet meet the above formula, it is determined that the heating temperatures of the silver-coated copper powder of different thicknesses are normal. When the temperatures of the top and bottom of the silver-coated copper powder on the pallet do not meet the above formula, it is determined that the top and bottom temperatures are largely stratified, the top of the silver-coated copper powder is overheated, and the bottom temperature is low. The silver-coated copper powder on the pallet needs to be turned over.

[0027] Further settings: The silver-clad copper powder drying parameter adaptive intelligent control module includes a data recording sub-module for different batches of silver-clad copper powder and a silver-clad copper powder database construction sub-module. The data recording sub-module for different batches of silver-clad copper powder is used to record the dynamic temperature, time, moisture content, powder state, and turning frequency of different batches of silver-clad copper powder during drying, and upload them to the silver-clad copper powder database construction sub-module. The silver-clad copper powder database construction sub-module constructs a database based on the uploaded data, and intelligently analyzes the optimal solution for drying the silver-clad copper powder.

[0028] Compared with the prior art, the beneficial effects of the present invention are: the present invention is equipped with multiple modules including a multi-range pre-detection module for the drying temperature of an empty oven, a multi-stage intelligent temperature adjustment module for drying silver-coated copper powder, a regional analysis module for the real-time drying condition of silver-coated copper powder, a multi-layer temperature comprehensive monitoring and analysis module for silver-coated copper powder, an adaptive intelligent control module for drying parameters of silver-coated copper powder and a central control module, which are used to perform multi-stage temperature control on the silver-coated copper powder inside the oven, analyze the dynamic temperature changes of the silver-coated copper powder under different temperature control environments in real time, and perform comprehensive temperature analysis and precise adjustment on the silver-coated copper powder in combination with the drying status of the silver-coated copper powder, so that the surface of the silver-coated copper powder is heated uniformly, avoiding local high-temperature areas, and facilitating subsequent processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0030] Figure 1 This is a schematic diagram of the overall structure of a silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to the present invention;

[0031] Figure 2 This is a schematic diagram of some modules of the silver-coated copper powder preparation and drying monitoring system based on multi-source big data support of the present invention. Figure 1 ;

[0032] Figure 3 This is a schematic diagram of some modules of the silver-coated copper powder preparation and drying monitoring system based on multi-source big data support of the present invention. Figure 2 ;

[0033] Figure 4 This is a schematic diagram of some modules of the silver-coated copper powder preparation and drying monitoring system based on multi-source big data support of the present invention. Figure 3 ;

[0034] Figure 5 This is a schematic diagram of some modules of the silver-coated copper powder preparation and drying monitoring system based on multi-source big data support of the present invention. Figure 4 ;

[0035] Figure 6 This is a schematic diagram of some modules of the silver-coated copper powder preparation and drying monitoring system based on multi-source big data support of the present invention. Figure 5 . DETAILED DESCRIPTION

[0036] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0037] See also Figures 1 to 6 In an embodiment of the present invention, a silver-coated copper powder preparation and drying monitoring system based on multi-source big data support is provided. The system includes a multi-range pre-detection module for the drying temperature of an empty oven, a multi-stage intelligent temperature adjustment module for drying the silver-coated copper powder, a regional analysis module for the real-time drying condition of the silver-coated copper powder, a comprehensive monitoring and analysis module for the multi-layer temperature of the silver-coated copper powder, an adaptive intelligent control module for the drying parameters of the silver-coated copper powder, and a central control module. The multi-range pre-detection module for the drying temperature of an empty oven, the multi-stage intelligent temperature adjustment module for drying the silver-coated copper powder, the regional analysis module for the real-time drying condition of the silver-coated copper powder, the comprehensive monitoring and analysis module for the multi-layer temperature of the silver-coated copper powder, and the adaptive intelligent control module for the drying parameters of the silver-coated copper powder are connected one by one and are all connected to the central control module.

[0038] The multi-range pre-detection module for the empty oven drying temperature is used to pre-detect the temperature inside an empty oven without silver-coated copper powder, and to mark the temperature differences at different drying positions inside the oven.

[0039] Specific instructions are required, such as Figure 2The multi-range pre-detection module of the empty value oven drying temperature includes several temperature detection sensors, a multi-position detection submodule of the internal temperature of the oven and a differentiated marking submodule of the temperature range of different positions. The multi-position detection submodule of the internal temperature of the oven is used to use several temperature detection sensors inside the oven to pre-detect the temperature of different silver-coated copper powder tray setting range positions inside the oven, record the temperature of each tray range, and mark and feedback when there is a difference in the temperature of different trays. The differentiated marking submodule of the temperature range of different positions is used to record the temperature difference of different tray positions, obtain the position of each heat source point inside the oven, compare the distance between each tray and the heat source point, and when the temperature of a tray range is lower than the average temperature inside the oven, and at the same time the distance from the heat source point is greater than the set threshold, it needs to be fed back to the remote PC end to manually adjust the heat source position in advance.

[0040] The multi-stage temperature intelligent adjustment module for drying silver-coated copper powder is used to perform second-order dynamic control of the internal temperature of the oven after placing the silver-coated copper powder, and monitor the real-time drying surface temperature of the silver-coated copper powder in real time;

[0041] Specific instructions are required, such as Figure 3 The multi-stage temperature intelligent adjustment module for drying silver-coated copper powder includes a second-stage temperature drying dynamic control submodule for silver-coated copper powder and a multi-region surface temperature differentiation monitoring submodule for silver-coated copper powder, a vacuum tester, and an oxygen analyzer. The second-stage temperature drying dynamic control submodule for silver-coated copper powder is used to heat the silver-coated copper powder in stages during the drying process according to different temperature ranges, including a dynamic drying stage and a drying stabilization stage. The temperature range and time range of the dynamic drying stage and the drying stabilization stage are set manually. The multi-region surface temperature differentiation monitoring submodule for silver-coated copper powder is used to combine a number of detection sensors inside the oven to perform real-time detection of the vacuum degree, oxygen concentration and surface temperature of the silver-coated copper powder on each tray inside the oven, and record the initial temperature of the silver-coated copper powder when it is placed in the tray, and analyze and record the heating rate of the surface temperature of the silver-coated copper powder in the set time period.

[0042] The module for analyzing the real-time drying status of silver-coated copper powder by region is used to monitor the status of silver-coated copper powder in multiple regions at the first-order temperature, and to analyze and adjust the temperature inside the oven in multiple locations in real time based on the monitoring data;

[0043] Specific instructions are required, such as Figure 4 The silver-coated copper powder real-time drying situation regional analysis module includes a silver-coated copper powder drying status monitoring submodule and a silver-coated copper powder position temperature analysis and adjustment submodule;

[0044] The silver-clad copper powder drying status monitoring submodule includes several visual cameras and vibration sensors. Several cameras observe the drying status of the silver-clad copper powder on the tray inside the oven during the dynamic drying stage through the oven visual window and provide real-time feedback, including the agglomeration of the silver-clad copper powder and local color changes. The vibration sensor is set inside the oven and determines whether the silver-clad copper powder is agglomerated by the change in amplitude. A timer is set to sample the silver-clad copper powder inside the oven in different time periods to detect the real-time moisture content of the silver-clad copper powder. The silver-clad copper powder drying status monitoring submodule records and reminds of the moisture content and agglomeration of the silver-clad copper powder.

[0045] The silver-coated copper powder position temperature analysis and regulation submodule is used to pre-detect the internal temperature of the oven in real time during the dynamic drying stage, and set the actual measured temperature inside the oven as U j , obtain the real-time surface temperature of the silver-coated copper powder on each tray during the dynamic drying stage, and set the surface temperature of each silver-coated copper powder to U1, U2, ..., U i The number of temperature detection sensors close to each support plate is m. The average surface temperature of each silver-coated copper powder is calculated and defined as Select the maximum surface temperature u of each silver-coated copper powder i max and minimum value u i min, calculate its temperature difference, namely ΔU, analyze the maximum, minimum and temperature difference of the surface temperature of each silver-coated copper powder, according to the formula:

[0046]

[0047] When the surface temperature of the silver-coated copper powder meets the above formula, the standard deviation threshold of the surface temperature of the silver-coated copper powder inside the oven is set to U σ , according to the formula:

[0048]

[0049] When it is detected that the surface temperature of the silver-coated copper powder meets the above formula, it is determined that there is no abnormality in the drying average temperature of the silver-coated copper powder inside the oven. When it does not meet the above formula, the minimum surface temperature of the silver-coated copper powder is extracted, the temperature of the heat source point nearby is monitored, and the temperature of the heat source point is controlled separately.

[0050] The silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module is used to detect the contact temperature of the silver-coated copper powder at different depths inside the pallet at the second-order temperature, determine whether there is local high temperature, and analyze the frequency of silver-coated copper powder turning operations;

[0051] Specific instructions are required, such as Figure 5 The silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module includes a silver-coated copper powder flat multi-layer temperature monitoring sub-module and a silver-coated copper powder turning frequency analysis sub-module;

[0052] The temperature monitoring submodule for multi-layer silver-coated copper powder flattening includes several temperature probes, which are set at different thicknesses of the silver-coated copper powder and different corners of the support plate. The temperature of the silver-coated copper powder at different thicknesses and positions during the drying and stabilization stage is detected and marked. The temperature of the silver-coated copper powder at different thicknesses from top to bottom in each support plate is set as U d1 、U d2 、U d3 ,...,U dt , where d1, d2, ..., dt are the different thicknesses of the temperature probe set on the silver-coated copper powder on the support plate. The positions of the silver-coated copper powder with different thicknesses are processed in descending order. When U dt >U dt-1 When , it means that the temperature of the upper layer thickness of the silver-coated copper powder is lower than the temperature of the lower layer thickness, which is marked as abnormal temperature. The temperature measuring point position of the temperature probe corresponding to the lower layer thickness temperature is extracted, and several temperature detection sensors are used to determine whether there is local high temperature at its position. The temperatures of different thicknesses of the silver-coated copper powder that are not abnormal after descending processing are recorded and sent to the silver-coated copper powder turning frequency analysis submodule for analysis.

[0053] The silver-coated copper powder turning frequency analysis submodule is used to screen the temperature of each thickness of the silver-coated copper powder on the pallet. The temperature gradient threshold at different thicknesses from top to bottom of the pallet is set as U T , screen the temperature of the silver-coated copper powder at the top and bottom respectively, set the thickness of the silver-coated copper powder inside the support plate to D, according to the formula:

[0054]

[0055] When the temperatures of the top and bottom of the silver-coated copper powder on the pallet meet the above formula, it is determined that the heating temperatures of the silver-coated copper powder of different thicknesses are normal. When the temperatures of the top and bottom of the silver-coated copper powder on the pallet do not meet the above formula, it is determined that the top and bottom temperatures are largely stratified, the top of the silver-coated copper powder is overheated, and the bottom temperature is low. The silver-coated copper powder on the pallet needs to be turned over.

[0056] The adaptive intelligent control module for silver-coated copper powder drying parameters is used to optimize the recorded data according to the dynamic monitoring data of the silver-coated copper powder drying and the powder state of different batches of silver-coated copper powder, build a drying process database, and adaptively adjust the drying process database.

[0057] Specific instructions are required, such as Figure 6The adaptive intelligent control module of silver-clad copper powder drying parameters includes a data recording submodule for different batches of silver-clad copper powder and a silver-clad copper powder database construction submodule. The data recording submodule for different batches of silver-clad copper powder is used to record the dynamic temperature, time, moisture content, powder state, and turning frequency of different batches of silver-clad copper powder during drying, and upload them to the silver-clad copper powder database construction submodule. The silver-clad copper powder database construction submodule constructs a database based on the uploaded data and intelligently analyzes the optimal solution for drying the silver-clad copper powder.

[0058] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A silver-coated copper powder preparation and drying monitoring system based on multi-source big data support, characterized by: The system includes a multi-range pre-detection module for the drying temperature of an empty oven, a multi-stage intelligent temperature adjustment module for drying silver-coated copper powder, a regional analysis module for the real-time drying condition of the silver-coated copper powder, a comprehensive monitoring and analysis module for the multi-layer temperature of the silver-coated copper powder, an adaptive intelligent control module for the drying parameters of the silver-coated copper powder, and a central control module, wherein the multi-range pre-detection module for the drying temperature of an empty oven, the multi-stage intelligent temperature adjustment module for drying silver-coated copper powder, the regional analysis module for the real-time drying condition of the silver-coated copper powder, the comprehensive monitoring and analysis module for the multi-layer temperature of the silver-coated copper powder, and the adaptive intelligent control module for the drying parameters of the silver-coated copper powder are connected one by one and are all connected to the central control module; The multi-range pre-detection module for the empty oven drying temperature is used to pre-detect the temperature inside an empty oven without silver-coated copper powder, and mark the temperature differences at different drying positions inside the oven; The multi-stage temperature intelligent adjustment module for drying silver-coated copper powder is used to perform second-order dynamic control of the internal temperature of the oven after placing the silver-coated copper powder, and monitor the real-time drying surface temperature of the silver-coated copper powder in real time; The module for analyzing the real-time drying status of silver-coated copper powder by region is used to monitor the status of silver-coated copper powder in multiple regions at the first-order temperature, and to analyze and adjust the temperature inside the oven in multiple locations in real time based on the monitoring data; The silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module is used to detect the contact temperature of the silver-coated copper powder at different depths inside the pallet at the second-order temperature, determine whether there is local high temperature, and analyze the frequency of silver-coated copper powder turning operations; The adaptive intelligent control module for silver-coated copper powder drying parameters is used to optimize the recorded data according to the dynamic monitoring data of the silver-coated copper powder drying and the powder state of different batches of silver-coated copper powder, build a drying process database, and adaptively adjust the drying process database.

2. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 1 is characterized in that : The multi-range pre-detection module for the empty value oven drying temperature includes several temperature detection sensors, a multi-position detection submodule for the internal temperature of the oven, and a differentiated marking submodule for the temperature ranges of different positions. The multi-position detection submodule for the internal temperature of the oven is used to use several temperature detection sensors inside the oven to pre-detect the temperatures of different silver-coated copper powder tray setting range positions inside the oven, record the temperature of each tray range, and mark and feedback when there are differences in the temperatures of different trays. The differentiated marking submodule for the temperature ranges of different positions is used to record the temperature differences of different tray positions, obtain the position of each heat source point inside the oven, compare the distance between each tray and the heat source point, and when the temperature of a certain tray range is lower than the average temperature inside the oven, and at the same time the distance from the heat source point is greater than the set threshold, it needs to be fed back to the remote PC end to manually adjust the heat source position in advance.

3. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 1 is characterized in that : The silver-coated copper powder drying multi-stage temperature intelligent adjustment module includes a silver-coated copper powder second-stage temperature drying dynamic control submodule and a silver-coated copper powder multi-region surface temperature differentiation monitoring submodule, a vacuum tester, and an oxygen analyzer. The silver-coated copper powder second-stage temperature drying dynamic control submodule is used to heat the silver-coated copper powder in stages during the drying process according to different temperature ranges, including a dynamic drying stage and a drying stabilization stage. The temperature range and time range of the dynamic drying stage and the drying stabilization stage are set manually. The silver-coated copper powder multi-region surface temperature differentiation monitoring submodule is used to combine a number of detection sensors inside the oven to perform real-time detection of the vacuum degree, oxygen concentration and surface temperature of the silver-coated copper powder on each tray inside the oven, and at the same time record the initial temperature of the silver-coated copper powder when it is placed in the tray, and analyze and record the heating rate of the surface temperature of the silver-coated copper powder within the set time period.

4. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 1 is characterized in that : The silver-clad copper powder real-time drying condition regional analysis module includes a silver-clad copper powder drying status monitoring submodule and a silver-clad copper powder position temperature analysis and adjustment submodule. The silver-clad copper powder drying status monitoring submodule includes several visual cameras and vibration sensors. Several cameras observe the drying status of the silver-clad copper powder on the internal tray of the oven during the dynamic drying stage through the oven visual window and provide real-time feedback, including the agglomeration of the silver-clad copper powder and the local color change. The vibration sensor is arranged inside the oven and determines whether the silver-clad copper powder is agglomerated by the change of amplitude. A timer is set and the silver-clad copper powder inside the oven is sampled in different time periods to detect the real-time moisture content of the silver-clad copper powder. The silver-clad copper powder drying status monitoring submodule records and reminds the moisture content and agglomeration of the silver-clad copper powder.

5. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 4 is characterized in that The silver-coated copper powder position temperature analysis and regulation submodule is used to detect the internal temperature of the oven in real time in advance during the dynamic drying stage, and set the actual measured temperature inside the oven as U j , obtain the real-time surface temperature of the silver-coated copper powder on each tray during the dynamic drying stage, and set the surface temperature of each silver-coated copper powder to U1, U2, ..., U i The number of temperature detection sensors close to each support plate is m. The average surface temperature of each silver-coated copper powder is calculated and defined as Select the maximum surface temperature u of each silver-coated copper powder i max and minimum value u i min, calculate its temperature difference, namely ΔU, analyze the maximum, minimum and temperature difference of the surface temperature of each silver-coated copper powder, according to the formula: When the surface temperature of the silver-coated copper powder meets the above formula, the standard deviation threshold of the surface temperature of the silver-coated copper powder inside the oven is set to U σ , according to the formula: When it is detected that the surface temperature of the silver-coated copper powder meets the above formula, it is determined that there is no abnormality in the drying average temperature of the silver-coated copper powder inside the oven. When it does not meet the above formula, the minimum surface temperature of the silver-coated copper powder is extracted, the temperature of the heat source point nearby is monitored, and the temperature of the heat source point is controlled separately.

6. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 1 is characterized in that The silver-coated copper powder multi-layer temperature comprehensive monitoring and analysis module includes a silver-coated copper powder flat multi-layer temperature monitoring submodule and a silver-coated copper powder turning frequency analysis submodule. The silver-coated copper powder flat multi-layer temperature monitoring submodule includes a plurality of temperature probes. The plurality of temperature probes are arranged at different thicknesses of the silver-coated copper powder and at different corners of the support plate. The temperature of the silver-coated copper powder at different thicknesses and positions during the drying and stabilization stage is detected and marked. The temperature of the silver-coated copper powder at different thicknesses from top to bottom in each support plate is set as U d1 、U d2 、U d3 ,...,U dt , where d1, d2, ..., dt are the different thicknesses of the temperature probe set on the silver-coated copper powder on the support plate. The positions of the silver-coated copper powder with different thicknesses are processed in descending order. When U dt >U dt-1 When , it means that the temperature of the upper layer thickness of the silver-coated copper powder is lower than the temperature of the lower layer thickness, which is marked as abnormal temperature. The temperature measuring point position of the temperature probe corresponding to the lower layer thickness temperature is extracted, and several temperature detection sensors are used to determine whether there is local high temperature at its position. The temperatures of different thicknesses of the silver-coated copper powder that are not abnormal after descending processing are recorded and sent to the silver-coated copper powder turning frequency analysis submodule for analysis.

7. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 6 is characterized in that The silver-coated copper powder turning frequency analysis submodule is used to screen the temperature of each thickness of the silver-coated copper powder on the pallet, by artificially setting the temperature gradient threshold value of different thicknesses from top to bottom on the pallet as U T , screen the temperature of the silver-coated copper powder at the top and bottom respectively, set the thickness of the silver-coated copper powder inside the support plate to D, according to the formula: When the temperatures of the top and bottom of the silver-coated copper powder on the pallet meet the above formula, it is determined that the heating temperatures of the silver-coated copper powder of different thicknesses are normal. When the temperatures of the top and bottom of the silver-coated copper powder on the pallet do not meet the above formula, it is determined that the top and bottom temperatures are largely stratified, the top of the silver-coated copper powder is overheated, and the bottom temperature is low. The silver-coated copper powder on the pallet needs to be turned over.

8. The silver-coated copper powder preparation and drying monitoring system based on multi-source big data support according to claim 1 is characterized in that :The silver-clad copper powder drying parameter adaptive intelligent control module includes a data recording submodule for different batches of silver-clad copper powder and a silver-clad copper powder database construction submodule. The data recording submodule for different batches of silver-clad copper powder is used to record the dynamic temperature, time, moisture content, powder state, and turning frequency of different batches of silver-clad copper powder during drying, and upload them to the silver-clad copper powder database construction submodule. The silver-clad copper powder database construction submodule constructs a database based on the uploaded data and intelligently analyzes the optimal solution for drying the silver-clad copper powder.

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