Online monitoring and control system for printing and dyeing process parameters

Abstract

The invention relates to the field of printing and dyeing process monitoring, and is used to solve the problem that the printing and dyeing process relies on manual control and lacks automatic optimization, resulting in a low printing and dyeing qualified rate. The invention is specifically an online monitoring and control system for printing and dyeing process parameters, comprising a time control unit, a dye solution control unit, a temperature control unit, a raw material judgment unit, a product judgment unit and an online supervision control platform. In the invention, in the printing and dyeing process, by identifying and classifying products that need to be printed and dyed, the printing and dyeing process is automatically obtained according to a database, so that automatic printing and dyeing parameter control can be achieved without relying on manual experience, thereby improving the accuracy of selecting printing and dyeing process parameters. After printing and dyeing is completed, quality inspection and confirmation are carried out on the printed and dyed products, and traceability analysis is carried out on the printing and dyeing control parameters according to the results of the quality inspection and confirmation, so that the printing and dyeing parameters can be continuously and automatically optimized, the automatic optimization capability of the printing and dyeing parameter control system is improved, and the printing and dyeing qualified rate is improved.

Description

Technical Field

[0001] The invention relates to the field of printing and dyeing process monitoring, and in particular to an online monitoring and control system for printing and dyeing process parameters. Background Art

[0002] Printing and dyeing technology occupies a pivotal position in the textile industry and is directly related to the overall quality of fabrics. The quality of printing and dyeing directly affects the appearance of the fabric. Therefore, the dyeing process of the fabric must be strictly controlled. There are many factors that affect the dyeing effect, mainly the temperature, concentration, and time of the dye solution. Among them, temperature is one of the most important factors affecting the dyeing effect. Generally speaking, when the temperature is high, the kinetic energy of the dye increases. At the same time, due to the expansion of the fiber, the internal voids increase, which is convenient for adsorption and diffusion, thereby accelerating the dyeing. However, when the temperature is too high, due to the excessive size of the fiber voids and the excessive kinetic energy of the dye particles, the dyed fiber part will dissolve back into the dye solution, affecting the dyeing effect.

[0003] At present, the existing technology of printing and dyeing process parameter monitoring and control system still has shortcomings. When the existing parameter control system is used, it is basically to manually set the parameters, which is highly dependent on work experience and has the possibility of manual misoperation. At the same time, there is a lack of feedback correction for the printing and dyeing process, resulting in the inability to automatically optimize and improve the printing and dyeing qualified rate. The application effect of the printing and dyeing process parameter monitoring and control system is described;

[0004] In view of the above technical problems, this application proposes a solution. Summary of the invention

[0005] In the present invention, in the printing and dyeing process, by identifying and classifying the products that need to be printed and dyed, the printing and dyeing process is automatically obtained according to the database, so that automatic printing and dyeing parameter control can be realized, without relying on manual experience, thereby improving the accuracy of selecting printing and dyeing process parameters. After printing and dyeing is completed, the printed and dyed products are quality inspected and confirmed, and the printing and dyeing control parameters are traced and analyzed according to the results of the quality inspection and confirmation, so that the printing and dyeing parameters can be continuously and automatically optimized, the automatic optimization capability of the printing and dyeing parameter control system is improved, the printing and dyeing qualified rate is improved, and the problem that the printing and dyeing process relies on manual control and lacks automatic optimization, resulting in a low printing and dyeing qualified rate, is solved, and an online monitoring and control system for printing and dyeing process parameters is proposed.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] The online monitoring and control system for printing and dyeing process parameters includes a time control unit, which monitors the printing and dyeing time in the printing and dyeing process, and judges the printing and dyeing time to determine whether the printing and dyeing time is qualified;

[0008] A dye liquor control unit, which monitors the dye liquor concentration in the dyeing process, determines the dyeing concentration according to the monitoring result, and issues an alarm for the dye liquor concentration;

[0009] A temperature control unit, which monitors the temperature of the dye solution in the printing and dyeing process, determines the temperature of the dye solution according to the monitoring result, and performs intelligent temperature adjustment and alarm reminder;

[0010] A raw material judgment unit, which analyzes the printing and dyeing raw materials to obtain the printing and dyeing control process required for the printing and dyeing raw materials;

[0011] A product judgment unit, which is used to perform quality inspection on printing and dyeing products, confirm the printing and dyeing qualified rate according to the quality inspection results, and record unqualified products in printing and dyeing;

[0012] An online supervision and control platform distributes the printing and dyeing control process and sends it to the dye solution control unit, the temperature control unit and the time control unit, and at the same time obtains the printing and dyeing time of unqualified products, analyzes the printing and dyeing control process at the printing and dyeing time point, and completes the correction of the printing and dyeing control process.

[0013] As a preferred embodiment of the present invention, the raw material judgment unit is used to obtain the type of cloth and the type of dye to be printed and dyed, and match the cloth type and the dye type with the database, and obtain the printing and dyeing control process according to the matching result, wherein the printing and dyeing control process includes the standard dye solution concentration, the standard dye solution temperature and the standard printing and dyeing time, and the raw material judgment unit sends the printing and dyeing control process to the online supervision control platform;

[0014] The online supervision and control platform decomposes the acquired printing and dyeing control process, and sends the decomposed standard dye solution concentration to the dye solution control unit, sends the standard dye solution temperature to the temperature control unit, and sends the standard printing and dyeing time to the time control unit.

[0015] As a preferred embodiment of the present invention, after the time control unit obtains the standard printing and dyeing time, it performs weighted calculation on the standard printing and dyeing time by using the coefficients at both ends to obtain a preset printing and dyeing time range;

[0016] The time control unit is used to monitor the printing and dyeing time in the printing and dyeing process, and compare the printing and dyeing time with a preset printing and dyeing time range. If the printing and dyeing time is within the preset printing and dyeing time range, a normal time signal is generated; if the printing and dyeing time is outside the preset printing and dyeing time range, a time abnormality signal is generated.

[0017] As a preferred embodiment of the present invention, after the dye solution control unit obtains the standard dye solution concentration, it performs weighted calculation on the standard dye solution concentration by using the coefficients at both ends to obtain a preset dye solution concentration range;

[0018] The dye liquid control unit monitors the dye liquid concentration in the printing and dyeing process and compares the dye liquid concentration with a preset dye liquid concentration range. If the dye liquid concentration is within the preset dye liquid concentration range, a normal dye liquid signal is generated; if the dye liquid concentration is outside the preset dye liquid concentration range, an abnormal dye liquid signal is generated.

[0019] As a preferred embodiment of the present invention, after the temperature control unit obtains the standard dye solution temperature, it performs weighted calculation on the standard dye solution temperature by using the coefficients at both ends to obtain a preset dye solution temperature range;

[0020] The temperature control unit is used to monitor the dye liquid temperature in the printing and dyeing process, and compare the dye liquid temperature with a preset dye liquid temperature range. If the dye liquid temperature is outside the preset dye liquid temperature range, a temperature abnormality signal is generated; if the dye liquid temperature is within the preset dye liquid temperature range, a dye liquid temperature normal signal is generated, and the dye liquid temperature normal signal is sent to the online supervision and control platform.

[0021] As a preferred embodiment of the present invention, the product judgment unit detects the cloth after printing and dyeing, obtains the degree of completion of printing and dyeing, and compares the degree of completion of printing and dyeing with a preset completion threshold. If the degree of completion of printing and dyeing is less than the preset completion threshold, the cloth after printing and dyeing is recorded as a defective sample. If the degree of completion of printing and dyeing is greater than or equal to the preset completion threshold, the cloth after printing and dyeing is recorded as a qualified sample. The product judgment unit divides the defective samples by the total number of samples to obtain the defective rate. If the defective rate is higher than the preset threshold, a printing and dyeing abnormality signal is generated. If the defective rate is not higher than the preset threshold, a printing and dyeing normal signal is generated. The product judgment unit sends the printing and dyeing abnormality signal and the printing and dyeing normal signal to the online supervision and control platform.

[0022] As a preferred embodiment of the present invention, the online supervision and control platform retrieves the dye liquor temperature at the time when the abnormality occurs, and the online supervision and control platform calculates the ratio of the dye liquor temperature to the standard dye liquor temperature to obtain a temperature error ratio. If the temperature error ratio is greater than 1, the ratio of the temperature error ratio to the large end ratio is calculated and recorded as the temperature large end ratio. If the temperature error ratio is less than 1, the ratio of the temperature error ratio to the small end ratio is calculated and recorded as the temperature small end ratio.

[0023] The online supervision platform retrieves the dye solution concentration at the time when the abnormality occurs, calculates the ratio of the dye solution concentration to the preset standard dye solution concentration, and obtains the concentration error ratio. If the concentration error ratio is greater than 1, the ratio of the concentration error ratio to the large end ratio is calculated and recorded as the concentration large end ratio. If the concentration error ratio is less than 1, the ratio of the concentration error ratio to the small end ratio is calculated and recorded as the concentration small end ratio.

[0024] The online supervision platform counts all the temperature large-end ratios that appear, records the temperature large-end ratio as Ti, i=1, 2, 3…, n, records the temperature small-end ratio as ti, and performs arithmetic averaging on all temperature large-end ratios and temperature small-end ratios to obtain the average temperature large-end ratio T and the average temperature small-end ratio t, and calculates the new temperature large-end ratio T0 by the formula, , temperature small end ratio t0, , and send the new temperature large end ratio and the new temperature small end ratio to the temperature control unit, and the temperature control unit generates a new dye solution temperature range again according to the new temperature large end ratio and the new temperature small end ratio;

[0025] The online supervision platform counts all the large-end concentration ratios, records the large-end concentration ratio as Mi, records the small-end concentration ratio as mi, performs arithmetic averaging on all large-end concentration ratios and small-end concentration ratios, obtains the average large-end concentration ratio M and the average small-end concentration ratio m, and calculates the new large-end concentration ratio M0 by the formula, , concentration small end ratio m0, The new large-end ratio of the concentration and the new small-end ratio of the concentration are sent to the dye solution control unit, and the dye solution control unit generates a new dye solution concentration range again according to the new large-end ratio of the concentration and the new small-end ratio of the concentration.

[0026] Compared with the prior art, the present invention has the following beneficial effects:

[0027] In the present invention, when controlling the printing and dyeing process, by identifying and classifying the products that need to be printed and dyed, and obtaining the printing and dyeing process required by the products according to the database, automatic printing and dyeing parameter control can be achieved without relying on manual experience, thereby improving the accuracy of selecting printing and dyeing process parameters. In the present invention, the printed and dyed products are quality inspected and confirmed, and the printing and dyeing control parameters are traced and analyzed according to the results of the quality inspection and confirmation. By using the normalized analysis of a large amount of sample data, the printing and dyeing parameters can be continuously and automatically optimized, thereby improving the automatic optimization capability of the printing and dyeing parameter control system and improving the printing and dyeing qualified rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0029] Figure 1 is a system block diagram of the present invention;

[0030] Figure 2 It is a system flow chart of the present invention. DETAILED DESCRIPTION

[0031] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. 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 creative work are within the scope of protection of the present invention.

[0032] Embodiment 1:

[0033] See also Figure 1 - Figure 2 As shown, the online monitoring and control system for printing and dyeing process parameters includes a time control unit, a dye solution control unit, a temperature control unit, a raw material judgment unit, a product judgment unit and an online supervision control platform. The dye solution control unit monitors the dye solution concentration in the printing and dyeing process and compares the dye solution concentration with a preset dye solution concentration range. If the dye solution concentration is within the preset dye solution concentration range, a normal dye solution signal is generated. If the dye solution concentration is outside the preset dye solution concentration range, an abnormal dye solution signal is generated. The dye solution control unit sends the abnormal dye solution signal to the online supervision control platform, and the online supervision control platform reminds the abnormal dye solution, so as to timely correct the dye solution concentration and ensure the printing and dyeing effect.

[0034] The temperature control unit is used to monitor the temperature of the dye solution in the printing and dyeing process, and compare the dye solution temperature with the preset dye solution temperature range. If the dye solution temperature is outside the preset dye solution temperature range, a temperature abnormality signal is generated. If the dye solution temperature is within the preset dye solution temperature range, a dye solution temperature normal signal is generated and sent to the online supervision and control platform. The online supervision and control platform generates an alarm reminder and automatically adjusts the printing and dyeing temperature through the temperature control equipment to ensure that the printing and dyeing temperature is controlled within the preset temperature range, thereby improving the printing and dyeing effect.

[0035] The time control unit is used to monitor the printing and dyeing time in the printing and dyeing process, and compare the printing and dyeing time with the preset printing and dyeing time range. If the printing and dyeing time is within the preset printing and dyeing time range, a time normal signal is generated; if the printing and dyeing time is outside the preset printing and dyeing time range, a time abnormality signal is generated. The time control unit sends the time abnormality signal to the online supervision and control platform, and the online supervision and control platform generates an alarm reminder to remind the management personnel to adjust the printing and dyeing time;

[0036] The raw material judgment unit is used to obtain the type of cloth and dye to be printed and dyed, and match the cloth type and dye type with the database, and obtain the printing and dyeing control process according to the matching result, wherein the printing and dyeing control process includes standard dye liquid concentration, standard dye liquid temperature and standard printing and dyeing time. The raw material judgment unit sends the printing and dyeing control process to the online supervision and control platform, and the online supervision and control platform splits the obtained printing and dyeing control process, and sends the split standard dye liquid concentration to the dye liquid control unit, sends the standard dye liquid temperature to the temperature control unit, and sends the standard printing and dyeing time to the time control unit;

[0037] After the time control unit obtains the standard printing and dyeing time, it performs weighted calculation on the standard printing and dyeing time by using the coefficients at both ends. Specifically, the small end coefficient is multiplied by the standard printing and dyeing time to obtain the lower limit of the standard printing and dyeing time, and the large end coefficient is multiplied by the standard printing and dyeing time to obtain the upper limit of the standard printing and dyeing time. The lower limit of the standard printing and dyeing time and the upper limit of the standard printing and dyeing time are used as the two end points to obtain the preset printing and dyeing time range;

[0038] Similarly, after the dye control unit obtains the standard dye concentration, it performs weighted calculation on the standard dye concentration by the two end coefficients, specifically, the small end coefficient is multiplied by the standard dye concentration to obtain the lower limit of the standard dye concentration, and the large end coefficient is multiplied by the standard dye concentration to obtain the upper limit of the standard dye concentration. The lower limit of the standard dye concentration and the upper limit of the standard dye concentration are used as the two end points to obtain the preset dye concentration range;

[0039] After the temperature control unit obtains the standard dye solution temperature, it performs weighted calculation on the standard dye solution temperature through the two end coefficients respectively. Specifically, the small end coefficient is multiplied by the standard dye solution temperature to obtain the lower limit of the standard dye solution temperature, and the large end coefficient is multiplied by the standard dye solution temperature to obtain the upper limit of the standard dye solution temperature. The lower limit and upper limit of the standard dye solution temperature are used as the two end points to obtain the preset dye solution temperature range, in which all the large end coefficients and small end coefficients are manually preset.

[0040] Embodiment 2:

[0041] See also Figure 1 - Figure 2 As shown, the product judgment unit detects the printed and dyed cloth and obtains the printing and dyeing completion degree X. , where a is color accuracy, b is color fastness, and c is defect area. The product judgment unit compares the printing and dyeing completion X with the preset completion threshold. If the printing and dyeing completion X is less than the preset completion threshold, the cloth after printing and dyeing is recorded as a defective sample. If the printing and dyeing completion X is greater than or equal to the preset completion threshold, the cloth after printing and dyeing is recorded as a qualified sample. The product judgment unit calculates the sum of the number of defective samples and qualified samples and records it as the total number of samples. The defective samples are divided by the total number of samples to obtain the defective rate. If the defective rate is higher than the preset threshold, a printing and dyeing abnormal signal is generated. If the defective rate is not higher than the preset threshold, a printing and dyeing normal signal is generated. The product judgment unit sends the printing and dyeing abnormal signal and the printing and dyeing normal signal to the online supervision and control platform.

[0042] Embodiment three:

[0043] See also Figure 1 - Figure 2 As shown, after the online monitoring and control platform obtains the printing and dyeing abnormality signal, the time when the printing and dyeing abnormality signal is generated is recorded as t0, and the printing and dyeing time t1 and the time t2 required for the printing and dyeing to be transported to the product judgment unit after the printing and dyeing is completed are obtained through the time consumption analysis of the printing and dyeing process. The online monitoring and control platform obtains the abnormality occurrence time through t0-t1-t2;

[0044] The online supervision and control platform retrieves the dye solution temperature at the time of the abnormality from the temperature control unit and retrieves the dye solution concentration at the time of the abnormality from the dye solution control unit according to the abnormality occurrence time. The online supervision and control platform calculates the ratio of the dye solution temperature to the standard dye solution temperature to obtain the temperature error ratio. If the temperature error ratio is greater than 1, the ratio of the temperature error ratio to the large end ratio is calculated and recorded as the temperature large end ratio. If the temperature error ratio is less than 1, the ratio of the temperature error ratio to the small end ratio is calculated and recorded as the temperature small end ratio.

[0045] The online supervision platform calculates the ratio of the dye solution concentration to the preset standard dye solution concentration to obtain the concentration error ratio. If the concentration error ratio is greater than 1, the ratio of the concentration error ratio to the large end ratio is calculated and recorded as the concentration large end ratio. If the concentration error ratio is less than 1, the ratio of the concentration error ratio to the small end ratio is calculated and recorded as the concentration small end ratio.

[0046] The online supervision platform counts all the temperature large-end ratios that appear, records the temperature large-end ratio as Ti, i=1, 2, 3…, n, records the temperature small-end ratio as ti, and performs arithmetic average on all temperature large-end ratios and temperature small-end ratios to obtain the average temperature large-end ratio T and the average temperature small-end ratio t. The new temperature large-end ratio T0 is calculated by the formula, , temperature small end ratio t0, The new temperature large end ratio and the new temperature small end ratio are sent to the temperature control unit, and the temperature control unit generates a new dyeing liquid temperature range again according to the new temperature large end ratio and the new temperature small end ratio, so as to correct the dyeing liquid temperature range, make the temperature more suitable for the dyeing liquid to adhere to the cloth, and improve the color fastness during printing and dyeing;

[0047] The online supervision platform counts all the large-end concentration ratios, records the large-end concentration ratio as Mi, records the small-end concentration ratio as mi, and performs arithmetic averaging on all large-end concentration ratios and small-end concentration ratios to obtain the average large-end concentration ratio M and the average small-end concentration ratio m. The new large-end concentration ratio M0 is calculated using the formula, , concentration small end ratio m0, The new large-end ratio and the new small-end ratio of the concentration are sent to the dyeing liquid control unit, and the dyeing liquid control unit generates a new dyeing liquid concentration range again according to the new large-end ratio and the new small-end ratio of the concentration, so as to correct the dyeing liquid concentration during printing and dyeing, continuously improve the accuracy of the dyeing liquid concentration, and ensure the printing and dyeing quality;

[0048] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. Online monitoring and control system for printing and dyeing process parameters, characterized in that: It includes a time control unit, which monitors the printing and dyeing time in the printing and dyeing process, and judges the printing and dyeing time to determine whether the printing and dyeing time is qualified; A dye liquor control unit, which monitors the dye liquor concentration in the dyeing process, determines the dyeing concentration according to the monitoring result, and issues an alarm for the dye liquor concentration; A temperature control unit, which monitors the temperature of the dye solution in the printing and dyeing process, determines the temperature of the dye solution according to the monitoring result, and performs intelligent temperature adjustment and alarm reminder; A raw material judgment unit, which analyzes the printing and dyeing raw materials to obtain the printing and dyeing control process required for the printing and dyeing raw materials; A product judgment unit, which is used to perform quality inspection on printing and dyeing products, confirm the printing and dyeing qualified rate according to the quality inspection results, and record unqualified products in printing and dyeing; An online supervision and control platform distributes the printing and dyeing control process and sends it to the dyeing liquid control unit, the temperature control unit and the time control unit, and obtains the printing and dyeing time of unqualified products, analyzes the printing and dyeing control process at the printing and dyeing time point, and completes the correction of the printing and dyeing control process; After the time control unit obtains the standard printing and dyeing time, it performs weighted calculation on the standard printing and dyeing time by using the preset two end coefficients to obtain a preset printing and dyeing time range; The time control unit monitors the printing and dyeing time in the printing and dyeing process, and compares the printing and dyeing time with a preset printing and dyeing time range. If the printing and dyeing time is within the preset printing and dyeing time range, a time normal signal is generated; if the printing and dyeing time is outside the preset printing and dyeing time range, a time abnormal signal is generated; The online monitoring and control platform retrieves the dye liquor temperature at the time when the abnormality occurs, and the online monitoring and control platform calculates the ratio of the dye liquor temperature to the standard dye liquor temperature to obtain a temperature error ratio. If the temperature error ratio is greater than 1, the ratio of the temperature error ratio to the large end ratio is calculated and recorded as the temperature large end ratio. If the temperature error ratio is less than 1, the ratio of the temperature error ratio to the small end ratio is calculated and recorded as the temperature small end ratio. The online supervision and control platform retrieves the dye solution concentration at the time when the abnormality occurs, calculates the ratio of the dye solution concentration to the preset standard dye solution concentration, and obtains the concentration error ratio. If the concentration error ratio is greater than 1, the ratio of the concentration error ratio to the large end ratio is calculated and recorded as the concentration large end ratio. If the concentration error ratio is less than 1, the ratio of the concentration error ratio to the small end ratio is calculated and recorded as the concentration small end ratio. The online monitoring and control platform counts all the temperature large-end ratios that appear, records the temperature large-end ratio as Ti, i=1, 2, 3..., n, records the temperature small-end ratio as ti, performs arithmetic averaging on all temperature large-end ratios and temperature small-end ratios, obtains the average temperature large-end ratio T and the average temperature small-end ratio t, and calculates the new temperature large-end ratio T0 by the formula, , temperature small end ratio t0, , and send the new temperature large end ratio and the new temperature small end ratio to the temperature control unit, and the temperature control unit generates a new dye solution temperature range again according to the new temperature large end ratio and the new temperature small end ratio; The online supervision and control platform counts all the large-end concentration ratios, records the large-end concentration ratio as Mi, records the small-end concentration ratio as mi, performs arithmetic averaging on all the large-end concentration ratios and the small-end concentration ratios, obtains the average large-end concentration ratio M and the average small-end concentration ratio m, and calculates the new large-end concentration ratio M0 by the formula, , concentration small end ratio m0, The new large-end ratio of the concentration and the new small-end ratio of the concentration are sent to the dye solution control unit, and the dye solution control unit generates a new dye solution concentration range again according to the new large-end ratio of the concentration and the new small-end ratio of the concentration.

2. The online monitoring and control system for printing and dyeing process parameters according to claim 1 is characterized in that: The raw material judgment unit is used to obtain the type of cloth and dye to be printed and dyed, and match the cloth type and dye type with the database, and obtain the printing and dyeing control process according to the matching result, wherein the printing and dyeing control process includes the standard dye solution concentration, the standard dye solution temperature and the standard printing and dyeing time, and the raw material judgment unit sends the printing and dyeing control process to the online supervision and control platform; The online supervision and control platform decomposes the acquired printing and dyeing control process, and sends the decomposed standard dye solution concentration to the dye solution control unit, sends the standard dye solution temperature to the temperature control unit, and sends the standard printing and dyeing time to the time control unit.

3. The online monitoring and control system for printing and dyeing process parameters according to claim 1 is characterized in that: After the dye solution control unit obtains the standard dye solution concentration, it performs weighted calculation on the standard dye solution concentration by using the coefficients at both ends to obtain a preset dye solution concentration range; The dye liquid control unit monitors the dye liquid concentration in the printing and dyeing process and compares the dye liquid concentration with a preset dye liquid concentration range. If the dye liquid concentration is within the preset dye liquid concentration range, a normal dye liquid signal is generated; if the dye liquid concentration is outside the preset dye liquid concentration range, an abnormal dye liquid signal is generated.

4. The online monitoring and control system for printing and dyeing process parameters according to claim 1 is characterized in that: After the temperature control unit obtains the standard dye solution temperature, it performs weighted calculation on the standard dye solution temperature through the two end coefficients to obtain a preset dye solution temperature range; The temperature control unit is used to monitor the dye liquid temperature in the printing and dyeing process, and compare the dye liquid temperature with a preset dye liquid temperature range. If the dye liquid temperature is outside the preset dye liquid temperature range, a temperature abnormality signal is generated; if the dye liquid temperature is within the preset dye liquid temperature range, a dye liquid temperature normal signal is generated, and the dye liquid temperature normal signal is sent to the online supervision and control platform.

5. The online monitoring and control system for printing and dyeing process parameters according to claim 1 is characterized in that: The product judgment unit detects the cloth after printing and dyeing, obtains the degree of completion of printing and dyeing, and compares the degree of completion of printing and dyeing with a preset completion threshold. If the degree of completion of printing and dyeing is less than the preset completion threshold, the cloth after printing and dyeing is recorded as a defective sample. If the degree of completion of printing and dyeing is greater than or equal to the preset completion threshold, the cloth after printing and dyeing is recorded as a qualified sample. The product judgment unit divides the defective sample by the total number of samples to obtain the defective rate. If the defective rate is higher than the preset threshold, a printing and dyeing abnormal signal is generated. If the defective rate is not higher than the preset threshold, a printing and dyeing normal signal is generated. The product judgment unit sends the printing and dyeing abnormal signal and the printing and dyeing normal signal to the online supervision and control platform.

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