A capture-type temperature sensor based on continuous laser and its dynamic calibration method

Abstract

The present invention provides a capture-type temperature sensor based on continuous laser and a dynamic calibration method thereof, comprising: a laser scanning module, which is used to emit laser to a target position on an edge banding strip based on an optical component; a probe temperature measurement module, which uses two reflectors to make the light path emitted by the probe irradiate the target position and overlap with the laser, and measures the temperature of the laser landing point at the target position to obtain the real-time temperature value of the laser edge banding; an adjustment module, which is used to adjust the power of the laser scanning module according to the difference between the real-time temperature value and the set temperature value, so as to solve the problem of smoke and fire during the edge banding process. Make the edge banding more stable and of better quality.

Description

Technical Field

[0001] The invention relates to the technical field of laser edge sealing, and in particular to a capture-type temperature sensor based on continuous laser and a dynamic calibration method thereof. Background Art

[0002] Edge banding is an indispensable process in the production of panel furniture. It refers to the use of hot-melt adhesive to stick the edge banding tape to the cut surface of the board, and then use the trimming mechanism to cut off the excess material at the head and tail, the rough trimming mechanism to smooth the excess edge banding tape protruding from the upper and lower surfaces of the workpiece, the fine trimming mechanism to chamfer the upper and lower horizontal edges of the smoothed edge banding tape, the tracking chamfering mechanism to round the front and rear vertical edges and four corners of the edge banding tape, the scraping mechanism to smooth the knife marks produced by the fine trimming mechanism, and the polishing mechanism to perform the final polishing operation on the edges and corners processed by the above processes.

[0003] Traditional laser edge banding uses laser to irradiate the adhesive layer of the edge banding strip, which is then passed through a pressing wheel to make the edge banding strip fit onto the board surface to achieve the edge banding effect. However, traditional laser edge banding may cause serious problems such as smoking and fire due to mechanical jams and the movement of the edge banding strip during the edge banding process. Summary of the invention

[0004] The present invention discloses a capture-type temperature sensor based on continuous laser and a dynamic calibration method thereof, which solves the problem of smoke and fire in the edge sealing process and makes the edge sealing more stable and of better quality.

[0005] A capture-type temperature sensor based on continuous laser, comprising:

[0006] A laser scanning module, used for emitting laser to a target position on the edge banding strip based on an optical component;

[0007] The probe temperature measurement module is used to use two reflectors to make the light path emitted by the probe irradiate the target position and overlap with the laser, and measure the temperature of the laser landing point at the target position to obtain the real-time temperature value of the laser edge sealing;

[0008] The adjustment module is used to adjust the power of the laser scanning module according to the difference between the real-time temperature value and the set temperature value.

[0009] Preferably, the laser scanning module comprises:

[0010] A positioning unit, used to preset a target position on the edge banding strip and determine a laser emission direction of the laser scanning unit based on a positional relationship between the optical component and the laser scanning unit;

[0011] The laser scanning unit is used to determine the working parameters of the laser scanning based on the laser emission direction.

[0012] Preferably, the probe temperature measurement module includes:

[0013] Establishing a submodule, for establishing a light path rule of the probe under the two reflectors based on the positional relationship between the probe and the two reflectors;

[0014] A probe submodule, used to analyze the target position based on the optical path rule and determine the emission optical path of the probe;

[0015] The temperature measurement submodule is used to detect the temperature of the position where the probe is placed, so as to obtain the real-time temperature value of the laser edge sealing.

[0016] Preferably, the probe submodule comprises:

[0017] A rule analysis unit analyzes the rule of the optical path and reversely determines a first reverse rule from the second reflector to the first reflector and a second reverse rule from the first reflector to the probe;

[0018] a path determination unit, configured to set a first optical path from the target position to the second reflector with the target position as a starting point, and determine a second optical path from the second reflector to the first reflector based on the first inverse rule to realize the first optical path;

[0019] The path determination unit is further used to determine a third optical path from the first reflector to the probe based on the second inverse rule;

[0020] The emission determination unit is used to set the light emission parameters of the probe and perform emission based on the third light path.

[0021] Preferably, the temperature measurement submodule includes:

[0022] A temperature measuring unit, used to detect the temperature of the location where the probe is located, obtain a first temperature value, and measure a set of second temperature values ​​of the locations before and after the location where the probe is located;

[0023] a temperature judgment unit, which sets a temperature trend and a temperature range of the settled location point based on the second temperature value set, and judges whether the first temperature value satisfies the temperature trend and the temperature range;

[0024] If yes, taking the first temperature value as the real-time temperature value;

[0025] Otherwise, based on the temperature trend and the temperature range, the first temperature value is corrected, and the corrected temperature value is used as the real-time temperature value.

[0026] Preferably, the establishing submodule includes:

[0027] A static model building unit, used to build a static model of the light path emission environment based on the positional relationship between the probe and the two reflectors, and mark the positions of the probe and the two reflectors in the static model of the light path emission environment to obtain position labels;

[0028] A dynamic model building unit, used for adding the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors to the corresponding position tags, dynamically setting the static model of the optical path emission environment, and obtaining a dynamic model of the optical path emission environment;

[0029] The optical path analysis unit is used to change any dynamic setting of the emission dynamic parameter range and the angle adjustment range of the two reflectors in the dynamic model of the optical path emission environment, and determine a single change state of the optical path under the dynamic setting change;

[0030] A single rule determination unit, for determining, based on a single change state of the optical path, a first single change rule, a second single change rule, and a third single change rule corresponding to any dynamic setting change in the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors;

[0031] a multiple rule determination unit, configured to determine, based on the first single change rule, the second single change rule, and the third single change rule, a set of double change rules obtained when any one of the dynamic settings remains unchanged and the other two dynamic settings are changed, and to obtain, based on the set of double change rules, a triple change rule obtained when all the dynamic settings are changed;

[0032] The total rule determination unit determines the influence relationship between all rule points in the triple change rule based on the first single change rule, the second single change rule, the third single change rule and the double change rule set, and performs dynamic rule setting for all rule points based on the triple change rule, and obtains a dynamically changeable optical path rule by utilizing the dynamic rule setting.

[0033] Preferably, it also includes: a verification and correction module, which is used to determine the overlap between the laser and the light path irradiated on the target position after the light path emitted by the probe is irradiated on the target position and coincides with the laser, and calibrate the light path emitted by the probe according to the coincidence detection result;

[0034] The verification and correction module comprises:

[0035] An image acquisition unit is used to collect an image of a target position on the edge banding strip to obtain an edge banding image, and grayscale the edge banding image to obtain a grayscale image;

[0036] An image processing unit, configured to perform global pixel value detection on the grayscale image to determine a first region where pixel values ​​are within a preset range, and perform line detection on the first region to determine a second region where the lines are located;

[0037] A region analysis unit, configured to perform edge interception on the second region based on line features to obtain a third region of fixed length and width, set detection accuracy according to the width, detect pixel values ​​of pixel points in each column of the third region, take the pixel values ​​of pixel points in each column that are equal as the first column width, take the maximum difference of pixel values ​​of pixel points in each column within a preset difference range as the second column width, and take the other columns as the third column width;

[0038] a coincidence determination unit, configured to set a first weight for the first column width and a second weight for the second column width based on the image accuracy of the third area, determine a weighted total width of the first column width and the second column width using the first weight and the second weight, and use a ratio of the weighted total width to the width of the third area as a coincidence between the laser and the light path irradiated on the target position;

[0039] A coincidence determination unit, used to determine whether the coincidence meets a preset coincidence requirement, and if so, not to correct the light path emitted by the probe;

[0040] Otherwise, based on the difference between the overlap degree and the preset overlap degree, the light path emitted by the probe is corrected;

[0041] A correction unit is used to determine the adjustment direction of the probe based on the positions of the second column width and the third column width when it is necessary to correct the light path emitted by the probe, determine the adjustment amplitude of the probe based on the difference between the overlap degree and the preset overlap degree, and correct the light path emitted by the probe based on the adjustment direction and the adjustment amplitude.

[0042] Preferably, the adjustment module includes:

[0043] A receiving unit, used to receive a temperature signal fed back from the probe temperature measurement module, and determine a real-time temperature value set within a preset time based on the temperature signal;

[0044] A temperature determination unit, used to determine the difference between the real-time temperature value in the real-time temperature value set and the set temperature value;

[0045] If the difference is smaller than a preset difference range, increasing the power of the laser scanning module;

[0046] If the difference is within the preset difference range, the power of the laser scanning module is kept unchanged;

[0047] If the difference is greater than a preset difference range, the power of the laser scanning module is reduced.

[0048] Preferably, the adjustment module further includes:

[0049] an adjustment value determination unit, configured to determine a theoretical power value of the laser scanning module based on the real-time temperature value set and the current power value after determining to adjust the power of the laser scanning module;

[0050] The power comparison unit is used to compare the current power value, the theoretical power value, and the power range of the laser scanning module, and determine the actual power value according to the comparison result.

[0051] A dynamic calibration method for a capture-type temperature sensor based on continuous laser, comprising:

[0052] Step 1: Based on the optical component, the laser is emitted to the target position on the edge banding;

[0053] Step 2: Using two reflectors, the light path emitted by the probe is irradiated on the target position and overlaps with the laser, and the temperature of the laser landing point at the target position is measured to obtain the real-time temperature value of the laser edge sealing;

[0054] Step 3: According to the difference between the real-time temperature value and the set temperature value, the power of the laser scanning module is adjusted.

[0055] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0056] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0058] Figure 1 This is a structural diagram of a capture-type temperature sensor based on continuous laser in an embodiment of the present invention;

[0059] Figure 2 This is a structural diagram of a probe temperature measurement module in an embodiment of the present invention;

[0060] Figure 3The present invention is a flowchart of a dynamic calibration method of a capture-type temperature sensor based on continuous laser in an embodiment of the present invention. DETAILED DESCRIPTION

[0061] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0062] Example 1

[0063] A capture-type temperature sensor based on continuous laser, such as Figure 1 As shown, including:

[0064] A laser scanning module, used for emitting laser to a target position on the edge banding strip based on an optical component;

[0065] The probe temperature measurement module is used to use two reflectors to make the light path emitted by the probe irradiate the target position and overlap with the laser, and measure the temperature of the laser landing point at the target position to obtain the real-time temperature value of the laser edge sealing;

[0066] The adjustment module is used to adjust the power of the laser scanning module according to the difference between the real-time temperature value and the set temperature value.

[0067] In this embodiment, the optical components include a number of reflectors, beam splitters, etc., which are used to assist in determining the laser emission direction and ensure the accuracy of laser emission to the target position.

[0068] In this embodiment, the target position is a line, and the laser scanning module dynamically emits lasers toward the line in sequence.

[0069] In this embodiment, the two reflectors are used to assist in determining the optical path of the probe.

[0070] In this embodiment, if the real-time temperature value is less than the set temperature value, the power of the laser scanning module is increased; otherwise, the power of the laser scanning module is reduced.

[0071] The beneficial effect of the above design scheme is: this invention uses laser to scan the edge banding strip through the optical component, and at the same time a temperature measuring probe module is set. Through two reflectors, the optical path of the temperature measuring probe coincides with the optical path of the laser and falls on the same point on the edge banding strip. After the laser scanning module emits light, the temperature measuring probe measures the temperature of the laser landing point at high speed. If the measured temperature is higher than the set temperature, the laser scanning module is controlled to reduce the power. If it is lower than the set temperature, the power is increased to keep the temperature within the appropriate range, thereby solving the problem of smoke and fire during the edge banding process and making the edge banding more stable and with better quality.

[0072] Example 2

[0073] Based on Example 1, the embodiment of the present invention provides a capture-type temperature sensor based on continuous laser, wherein the laser scanning module includes:

[0074] A positioning unit, used to preset a target position on the edge banding strip and determine a laser emission direction of the laser scanning unit based on a positional relationship between the optical component and the laser scanning unit;

[0075] The laser scanning unit is used to determine the working parameters of the laser scanning based on the laser emission direction.

[0076] In this embodiment, the laser scanning unit may be, for example, a laser transmitter.

[0077] In this embodiment, the working parameters of the laser scanning unit include the laser emission angle, the moving distance of the laser emission, etc., to ensure that the set working parameters meet the scanning position requirements.

[0078] The beneficial effect of the above design scheme is that the laser is scanned on the edge banding strip through the optical component to ensure the quality of the edge banding and at the same time provide a basis for temperature measurement on the edge banding strip.

[0079] Example 3

[0080] Based on Example 1, the present invention provides a capture-type temperature sensor based on continuous laser, such as Figure 2 As shown, the probe temperature measurement module includes:

[0081] Establishing a submodule, for establishing a light path rule of the probe under the two reflectors based on the positional relationship between the probe and the two reflectors;

[0082] A probe submodule, used to analyze the target position based on the optical path rule and determine the emission optical path of the probe;

[0083] The temperature measurement submodule is used to detect the temperature of the position where the probe is placed, so as to obtain the real-time temperature value of the laser edge sealing.

[0084] In this embodiment, the optical path regularity is used to reflect the path regularity of the light path emitted by the probe at different orientations after passing through two reflectors.

[0085] In this embodiment, the probe is located at the target position.

[0086] The beneficial effect of the above design scheme is: by establishing the optical path law of the probe under the two reflectors, it is ensured that the optical path emitted by the probe accurately corresponds to the position of the laser, so that the temperature measurement and the laser can cooperate better, and the landing point position and the temperature measurement position are at the same point on the edge band. By implementing the temperature detection of the landing point position, the technical problem of the prior art that the temperature of the laser focal point cannot be accurately detected and there is a safety hazard is solved.

[0087] Example 4

[0088] Based on the third embodiment, a capture-type temperature sensor based on continuous laser is characterized in that the probe submodule includes:

[0089] A rule analysis unit analyzes the rule of the optical path and reversely determines a first reverse rule from the second reflector to the first reflector and a second reverse rule from the first reflector to the probe;

[0090] a path determination unit, configured to set a first optical path from the target position to the second reflector with the target position as a starting point, and determine a second optical path from the second reflector to the first reflector based on the first inverse rule to realize the first optical path;

[0091] The path determination unit is further used to determine a third optical path from the first reflector to the probe based on the second inverse rule;

[0092] The emission determination unit is used to set the light emission parameters of the probe and perform emission based on the third light path.

[0093] In this embodiment, the optical path of the light emitted by the probe is sequentially emitted from the probe, passes through the first reflector, the second reflector, and finally falls to the target position.

[0094] In this embodiment, the light that the probe should theoretically emit is determined in reverse from the target position through the second reflector and the first reflector according to the optical path rule.

[0095] In this embodiment, the emission parameters include the probe emission angle, emission light intensity, etc.

[0096] The beneficial effect of the above design scheme is: by reversely deducing based on the law of the optical path, the light path emitted by the probe is accurately emitted to the target position through the first reflector and the second reflector. The emission parameters of the probe are reversely deduced to ensure that the light path emitted by the probe is accurately emitted to the target position, thereby providing a basis for temperature measurement at the target position.

[0097] Example 5

[0098] Based on Example 3, the present invention provides a capture-type temperature sensor based on continuous laser, wherein the temperature measurement submodule comprises:

[0099] A temperature measuring unit, used to detect the temperature of the location where the probe is located, obtain a first temperature value, and measure a set of second temperature values ​​of the locations before and after the location where the probe is located;

[0100] a temperature judgment unit, which sets a temperature trend and a temperature range of the settled location point based on the second temperature value set, and judges whether the first temperature value satisfies the temperature trend and the temperature range;

[0101] If yes, taking the first temperature value as the real-time temperature value;

[0102] Otherwise, based on the temperature trend and the temperature range, the first temperature value is corrected, and the corrected temperature value is used as the real-time temperature value.

[0103] In this embodiment, the requirement for correcting the first temperature value is to make the corrected temperature value satisfy the temperature trend and temperature range.

[0104] The beneficial effect of the above design scheme is: by correcting the temperature value detected by the probe in combination with the temperature values ​​before and after the landing point, it is ensured that the measured temperature value meets the temperature change law during the laser edge sealing process, and the determined real-time temperature value better reflects the temperature of the laser edge sealing.

[0105] Example 6

[0106] Based on Example 3, the embodiment of the present invention provides a capture-type temperature sensor based on continuous laser, and the establishment submodule includes:

[0107] A static model building unit is used to build a static model of the light path emission environment based on the positional relationship between the probe and the two reflectors, and mark the positions of the probe and the two reflectors in the static model of the light path emission environment to obtain position labels;

[0108] A dynamic model building unit, used for adding the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors to the corresponding position tags, dynamically setting the static model of the optical path emission environment, and obtaining a dynamic model of the optical path emission environment;

[0109] The optical path analysis unit is used to change any dynamic setting of the emission dynamic parameter range and the angle adjustment range of the two reflectors in the dynamic model of the optical path emission environment, and determine a single change state of the optical path under the dynamic setting change;

[0110] A single rule determination unit, for determining, based on a single change state of the optical path, a first single change rule, a second single change rule, and a third single change rule corresponding to any dynamic setting change in the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors;

[0111] a multiple rule determination unit, configured to determine, based on the first single change rule, the second single change rule, and the third single change rule, a set of double change rules obtained when any one of the dynamic settings remains unchanged and the other two dynamic settings are changed, and to obtain, based on the set of double change rules, a triple change rule obtained when all the dynamic settings are changed;

[0112] The total rule determination unit determines the influence relationship between all rule points in the triple change rule based on the first single change rule, the second single change rule, the third single change rule and the double change rule set, and performs dynamic rule setting for all rule points based on the triple change rule, and obtains a dynamically changeable optical path rule by utilizing the dynamic rule setting.

[0113] In this embodiment, the static model of the optical path emission environment is used to simulate the positional relationship between the probe and the two reflectors. Through this model, the positional relationship between the probe and the two reflectors can be accurately represented and intuitively displayed.

[0114] In this embodiment, the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors are determined according to the model of the probe and the installation positions of the two reflectors.

[0115] In this embodiment, the dynamic model of the optical path emission environment can adjust the emission dynamic parameter range and angle adjustment range of the probe and the two reflectors on the basis of the static model of the optical path emission environment, so as to obtain the dynamic model of the optical path emission environment and realize the acquisition of optical path changes under various parameter changes.

[0116] In this embodiment, the first single change rule, the second single change rule, and the third single change rule respectively correspond to the change rules of the light path when only the emission dynamic parameter range of the probe, the angle adjustment range of the first reflector, and the angle adjustment range of the second reflector are changed.

[0117] In this embodiment, the dual change rule set corresponds to the change rule of the light path when changing any two of the emission dynamic parameter range of the probe, the angle adjustment range of the first reflector, and the angle adjustment range of the second reflector.

[0118] In this embodiment, the triple change rule is to adjust the emission dynamic parameter range of the probe, the angle adjustment range of the first reflector, and the angle adjustment range of the second reflector to obtain the change rule of the path of the light path during full adjustment.

[0119] In this embodiment, when the emission dynamic parameter range of the probe changes, it will affect the optical path of the two reflectors. When the angle adjustment range of the first reflector changes, it will affect the optical path of the second reflector. The influence relationship is used to represent that the regular points correspond to the probe, the first reflector, and the second reflector.

[0120] In this embodiment, based on the triple change law, the dynamic law setting is utilized to determine the influence law among the probe, the first reflector, and the second reflector according to the influence relationship, and the dynamic law setting is performed so that a dynamically changeable optical path law is obtained, which can satisfy the fact that when the probe, the first reflector, and the second reflector are arbitrarily changed, the optical path law is updated in time, so that the obtained optical path law satisfies the path law change brought about by the actual parameter change.

[0121] The beneficial effect of the above design scheme is: by establishing a light path law that can be dynamically changed for the probe under the two reflectors based on the positional relationship between the probe and the two reflectors, when the probe, the first reflector and the second reflector are arbitrarily changed, the light path law is updated in time, so that the obtained light path law satisfies the path law changes brought about by actual parameter changes, thereby embodying the domestic theoretical basis for ensuring the accuracy of the probe's emission light path.

[0122] Example 7

[0123] Based on Example 1, the embodiment of the present invention provides a capture-type temperature sensor based on continuous laser, further comprising: a verification and correction module, which is used to determine the overlap between the laser and the light path irradiated on the target position after the light path emitted by the probe is irradiated on the target position and coincides with the laser, and correct the light path emitted by the probe according to the coincidence detection result;

[0124] The verification and correction module comprises:

[0125] An image acquisition unit is used to collect an image of a target position on the edge banding strip to obtain an edge banding image, and grayscale the edge banding image to obtain a grayscale image;

[0126] An image processing unit, configured to perform global pixel value detection on the grayscale image to determine a first region where pixel values ​​are within a preset range, and perform line detection on the first region to determine a second region where the lines are located;

[0127] A region analysis unit, configured to perform edge interception on the second region based on line features to obtain a third region of fixed length and width, set detection accuracy according to the width, detect pixel values ​​of pixel points in each column of the third region, take the pixel values ​​of pixel points in each column that are equal as the first column width, take the maximum difference of pixel values ​​of pixel points in each column within a preset difference range as the second column width, and take the other columns as the third column width;

[0128] a coincidence determination unit, configured to set a first weight for the first column width and a second weight for the second column width based on the image accuracy of the third area, determine a weighted total width of the first column width and the second column width using the first weight and the second weight, and use a ratio of the weighted total width to the width of the third area as a coincidence between the laser and the light path irradiated on the target position;

[0129] A coincidence determination unit, used to determine whether the coincidence meets a preset coincidence requirement, and if so, not to correct the light path emitted by the probe;

[0130] Otherwise, based on the difference between the overlap degree and the preset overlap degree, the light path emitted by the probe is corrected;

[0131] A correction unit is used to determine the adjustment direction of the probe based on the positions of the second column width and the third column width when it is necessary to correct the light path emitted by the probe, determine the adjustment amplitude of the probe based on the difference between the overlap degree and the preset overlap degree, and correct the light path emitted by the probe based on the adjustment direction and the adjustment amplitude.

[0132] In this embodiment, the first region where the pixel value is within the preset range is the region where the edge sealing operation is performed.

[0133] In this embodiment, the second area is an area for edge sealing detection, and the third area is an area for regulating and standardizing the detection area based on the second area to facilitate the judgment of the overlap degree.

[0134] In this embodiment, the pixel values ​​of the pixel points in each column are equal, indicating that the position irradiated by the laser and the light path overlap at the position corresponding to this column, and the maximum difference in the pixel values ​​of the pixel points in each column is the difference between the maximum pixel value and the minimum pixel value of the pixel points, indicating that the position irradiated by the laser and the light path partially overlaps at the position corresponding to this column, and other columns indicate no overlap at all.

[0135] In this embodiment, if the image accuracy of the third area is greater, the corresponding first weight is smaller and the second weight is larger; conversely, the corresponding first weight is larger and the second weight is smaller, which can avoid the different image accuracy of the third area and cause errors in the overlap judgment.

[0136] The beneficial effect of the above design scheme is: before the temperature measuring probe measures the temperature of the laser landing point, the verification and correction module is used to determine the overlap between the laser and the light path irradiated on the target position, and according to the overlap detection result, the light path emitted by the probe is corrected to ensure the accuracy of the temperature measured by the probe in the position, to ensure that the measured temperature reflects the actual temperature in the laser landing point edge sealing process, and to provide an accurate data basis for the subsequent power control of the laser scanning module.

[0137] Example 8

[0138] Based on Example 1, the embodiment of the present invention provides a capture-type temperature sensor based on continuous laser, and the adjustment module includes:

[0139] A receiving unit, used to receive a temperature signal fed back from the probe temperature measurement module, and determine a real-time temperature value set within a preset time based on the temperature signal;

[0140] A temperature determination unit, used to determine the difference between the real-time temperature value in the real-time temperature value set and the set temperature value;

[0141] If the difference is smaller than a preset difference range, increasing the power of the laser scanning module;

[0142] If the difference is within the preset difference range, the power of the laser scanning module is kept unchanged;

[0143] If the difference is greater than a preset difference range, the power of the laser scanning module is reduced.

[0144] The beneficial effect of the above design scheme is: by comparing the temperature from the probe temperature measurement module, if the temperature is higher than the set temperature, the laser scanning module is controlled to reduce the power; if it is lower than the set temperature, the power is increased, so that the temperature is always within the appropriate range, thereby solving the problem of smoke and fire during the edge sealing process, making the edge sealing more stable and with better quality.

[0145] Example 9

[0146] Based on Example 8, the embodiment of the present invention provides a capture-type temperature sensor based on continuous laser, and the adjustment module further includes:

[0147] an adjustment value determination unit, configured to determine a theoretical power value of the laser scanning module based on the real-time temperature value set and the current power value after determining to adjust the power of the laser scanning module;

[0148] The theoretical power value ΔP is calculated according to the following formula r ;

[0149]

[0150] Among them, τ t represents the difference amplitude determined by the difference between the real-time temperature value in the real-time temperature value set and the set temperature value, and the value is (-1.0, 1.0), P d represents the current power value, T d Indicates the edge sealing temperature value under the current power value, represents the power of the laser scanning module required to achieve the average real-time temperature value in the real-time temperature value set, T c represents the average real-time temperature value of the real-time temperature value set, n represents the number of real-time temperature values ​​in the real-time temperature value set, θ t represents the rise and fall amplitude of the real-time temperature value set, and its value is (-1.0, 1.0), ΔP i represents the power of the laser scanning module required to achieve the i-th real-time temperature value in the real-time temperature value set;

[0151] A power comparison unit, configured to compare the current power value, the theoretical power value, and the power range of the laser scanning module, and determine an actual power value according to the comparison result;

[0152] The actual adjusted power value ΔP is calculated according to the following formula s ;

[0153]

[0154] Among them, P b Represents the power range of the laser scanning module, P bmax represents the maximum value of the power range of the laser scanning module, P bmin Indicates the minimum value of the power range of the laser scanning module.

[0155] In this embodiment, the greater the difference between the real-time temperature value in the real-time temperature value set and the set temperature value, the greater the corresponding determined difference amplitude.

[0156] In this embodiment, the ratio of the current power value and its corresponding edge sealing temperature value to the average real-time temperature value in the real-time temperature value set and the power of the laser scanning module required is used as an influencing factor for determining the theoretical power value, and the specific numerical influence of the power of the laser scanning module on the temperature is neutralized and considered, so that the obtained theoretical power value can more accurately meet the requirements for the edge sealing temperature.

[0157] In this embodiment, when the theoretical power value is not within the power range of the laser scanning module, the theoretical power value is usually greater than the power range. At this time, the theoretical power value needs to be adjusted according to the relationship between the current power value and the power range so that the actual power value obtained is within the power range.

[0158] In this embodiment, usually

[0159] In this embodiment, for the formula For example, P d =7KW, τ t =0.9,θ t =0.9, Then ΔP r =10.4KW.

[0160] In this embodiment, For example, P bmax =9KW, P bmin =1KW, ΔP s =7KW.

[0161] The beneficial effect of the above design scheme is: through the real-time temperature value set and the current power value, the theoretical power value of the laser scanning module is determined, and combined with the specific power requirements of the laser emission module, a reasonable actual power value is determined to ensure that the temperature is always within the appropriate range while protecting the laser scanning module, thereby solving the problem of smoke and fire during the edge sealing process, making the edge sealing more stable and with better quality.

[0162] Example 10

[0163] A dynamic calibration method for a capture temperature sensor based on continuous laser, such as Figure 3 As shown, including:

[0164] Step 1: Based on the optical component, the laser is emitted to the target position on the edge banding;

[0165] Step 2: Using two reflectors, the light path emitted by the probe is irradiated on the target position and overlaps with the laser, and the temperature of the laser landing point at the target position is measured to obtain the real-time temperature value of the laser edge sealing;

[0166] Step 3: According to the difference between the real-time temperature value and the set temperature value, the power of the laser scanning module is adjusted.

[0167] The beneficial effect of the above design scheme is: this invention uses laser to scan the edge banding strip through the optical component, and at the same time a temperature measuring probe module is set. Through two reflectors, the optical path of the temperature measuring probe coincides with the optical path of the laser and falls on the same point on the edge banding strip. After the laser scanning module emits light, the temperature measuring probe measures the temperature of the laser landing point at high speed. If the measured temperature is higher than the set temperature, the laser scanning module is controlled to reduce the power. If it is lower than the set temperature, the power is increased to keep the temperature within the appropriate range, thereby solving the problem of smoke and fire during the edge banding process and making the edge banding more stable and with better quality.

[0168] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A capture-type temperature sensor based on continuous laser, characterized in that: include: A laser scanning module, used for emitting laser to a target position on the edge banding strip based on an optical component; The probe temperature measurement module is used to use two reflectors to make the light path emitted by the probe irradiate the target position and overlap with the laser, and measure the temperature of the laser landing point at the target position to obtain the real-time temperature value of the laser edge sealing; An adjustment module, used for adjusting the power of the laser scanning module according to the difference between the real-time temperature value and the set temperature value; It also includes: a verification and correction module, which is used to determine the overlap between the laser and the light path irradiated on the target position after the light path emitted by the probe is irradiated on the target position and coincides with the laser, and calibrate the light path emitted by the probe according to the coincidence detection result; The verification and correction module comprises: An image acquisition unit is used to collect an image of a target position on the edge banding strip to obtain an edge banding image, and grayscale the edge banding image to obtain a grayscale image; An image processing unit, configured to perform global pixel value detection on the grayscale image to determine a first region where pixel values ​​are within a preset range, and perform line detection on the first region to determine a second region where the lines are located; A region analysis unit, configured to perform edge interception on the second region based on line features to obtain a third region of fixed length and width, set detection accuracy according to the width, detect pixel values ​​of pixel points in each column of the third region, take the pixel values ​​of pixel points in each column that are equal as the first column width, take the maximum difference of pixel values ​​of pixel points in each column within a preset difference range as the second column width, and take the other columns as the third column width; a coincidence determination unit, configured to set a first weight for the first column width and a second weight for the second column width based on the image accuracy of the third area, determine a weighted total width of the first column width and the second column width using the first weight and the second weight, and use a ratio of the weighted total width to the width of the third area as a coincidence between the laser and the light path irradiated on the target position; A coincidence determination unit, used to determine whether the coincidence meets a preset coincidence requirement, and if so, not to correct the light path emitted by the probe; Otherwise, based on the difference between the overlap degree and the preset overlap degree, the light path emitted by the probe is corrected; a correction unit, configured to determine, when it is necessary to correct the optical path emitted by the probe, an adjustment direction of the probe based on the positions of the second column width and the third column width, an adjustment amplitude of the probe based on a difference between the overlap degree and a preset overlap degree, and correct the optical path emitted by the probe based on the adjustment direction and the adjustment amplitude; The adjustment module comprises: A receiving unit, used to receive a temperature signal fed back from the probe temperature measurement module, and determine a real-time temperature value set within a preset time based on the temperature signal; A temperature determination unit, used to determine the difference between the real-time temperature value in the real-time temperature value set and the set temperature value; If the difference is smaller than a preset difference range, increasing the power of the laser scanning module; If the difference is within the preset difference range, the power of the laser scanning module is kept unchanged; If the difference is greater than a preset difference range, reducing the power of the laser scanning module; The adjustment module also includes: an adjustment value determination unit, configured to determine a theoretical power value of the laser scanning module based on the real-time temperature value set and the current power value after determining to adjust the power of the laser scanning module; The theoretical power value is calculated according to the following formula ; in, represents the difference amplitude determined by the difference between the real-time temperature value in the real-time temperature value set and the set temperature value, and the value is (-1.0, 1.0), represents the current power value, Indicates the edge sealing temperature value under the current power value, = , represents the power of the laser scanning module required to achieve the average real-time temperature value in the real-time temperature value set, represents the average real-time temperature value of the real-time temperature value set, represents the number of real-time temperature values ​​in the real-time temperature value set, Indicates the rise and fall amplitude of the real-time temperature value set, and its value is (-1.0, 1.0). represents the power of the laser scanning module required to achieve the i-th real-time temperature value in the real-time temperature value set; A power comparison unit, configured to compare the current power value, the theoretical power value, and the power range of the laser scanning module, and determine an actual power value according to the comparison result; The actual power value is calculated according to the following formula ; in, represents the power range of the laser scanning module, represents the maximum value of the power range of the laser scanning module, Indicates the minimum value of the power range of the laser scanning module.

2. A capture-type temperature sensor based on continuous laser according to claim 1, characterized in that: The laser scanning module comprises: A positioning unit, used to preset a target position on the edge banding strip and determine a laser emission direction of the laser scanning unit based on a positional relationship between the optical component and the laser scanning unit; The laser scanning unit is used to determine the working parameters of the laser scanning based on the laser emission direction.

3. A capture-type temperature sensor based on continuous laser according to claim 1, characterized in that: The probe temperature measurement module comprises: Establishing a submodule, for establishing a light path rule of the probe under the two reflectors based on the positional relationship between the probe and the two reflectors; A probe submodule, used to analyze the target position based on the optical path rule and determine the emission optical path of the probe; The temperature measurement submodule is used to detect the temperature of the position where the probe is placed, so as to obtain the real-time temperature value of the laser edge sealing.

4. A capture-type temperature sensor based on continuous laser according to claim 3, characterized in that: The probe submodule comprises: A rule analysis unit analyzes the rule of the optical path and reversely determines a first reverse rule from the second reflector to the first reflector and a second reverse rule from the first reflector to the probe; A path determination unit, configured to set a first optical path from the target position to the second reflector with the target position as a starting point, and determine a path from the second reflector to the first reflector based on the first inverse rule to achieve the first optical path to the second optical path; The path determination unit is further used to determine a third optical path from the first reflector to the probe based on the second inverse rule; The emission determination unit is used to set the light emission parameters of the probe and perform emission based on the third light path.

5. The capture-type temperature sensor based on continuous laser according to claim 3, characterized in that: The temperature measurement submodule comprises: A temperature measuring unit, used to detect the temperature of the location where the probe is located, obtain a first temperature value, and measure a set of second temperature values ​​of the locations before and after the location where the probe is located; a temperature judgment unit, configured to set a temperature trend and a temperature range of a location where the probe is located based on the second temperature value set, and to judge whether the first temperature value satisfies the temperature trend and the temperature range; If yes, taking the first temperature value as the real-time temperature value; Otherwise, based on the temperature trend and the temperature range, the first temperature value is corrected, and the corrected temperature value is used as the real-time temperature value.

6. The capture-type temperature sensor based on continuous laser according to claim 3, characterized in that: The establishment submodule comprises: A static model building unit, used to build a static model of the light path emission environment based on the positional relationship between the probe and the two reflectors, and mark the positions of the probe and the two reflectors in the static model of the light path emission environment to obtain position labels; A dynamic model building unit, used for adding the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors to the corresponding position tags, dynamically setting the static model of the optical path emission environment, and obtaining a dynamic model of the optical path emission environment; The optical path analysis unit is used to change any dynamic setting of the emission dynamic parameter range and the angle adjustment range of the two reflectors in the dynamic model of the optical path emission environment, and determine a single change state of the optical path under the dynamic setting change; A single rule determination unit, for determining, based on a single change state of the optical path, a first single change rule, a second single change rule, and a third single change rule corresponding to when any dynamic setting of the emission dynamic parameter range of the probe and the angle adjustment range of the two reflectors is changed; a multiple rule determination unit, configured to determine, based on the first single change rule, the second single change rule, and the third single change rule, a set of double change rules obtained when any one of the dynamic settings remains unchanged and the other two dynamic settings are changed, and to obtain, based on the set of double change rules, a triple change rule obtained when all the dynamic settings are changed; The total rule determination unit determines the influence relationship between all rule points in the triple change rule based on the first single change rule, the second single change rule, the third single change rule and the double change rule set, and performs dynamic rule setting for all rule points based on the triple change rule, and obtains a dynamically changeable optical path rule by utilizing the dynamic rule setting.

7. The method for dynamic calibration of a capture temperature sensor based on continuous laser according to claim 1, characterized in that: include: Step 1: Based on the optical component, the laser is emitted to the target position on the edge banding; Step 2: Using two reflectors, the light path emitted by the probe is irradiated on the target position and overlaps with the laser, and the temperature of the laser landing point at the target position is measured to obtain the real-time temperature value of the laser edge sealing; Step 3: According to the difference between the real-time temperature value and the set temperature value, the power of the laser scanning module is adjusted.

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