Printer remote control method and system based on Internet of Things and storage medium

Abstract

The invention relates to the technical field of printer remote management and control, in particular to a printer remote management and control method and system based on the Internet of Things and a storage medium, and the system comprises a far-end Internet of Things management and control center, a pre-printing safety evaluation unit, a regional difference verification unit, a basic operation time period evaluation analysis unit, an ink use hindering quantitative analysis unit and a printing management and control unit. Analysis is performed preliminarily from two points of pre-printing authentication and transmission evaluation, on one hand, whether the far-end control end has the printing permission or not is known, on the other hand, the potential transmission risk of the to-be-printed file can be known, regional chromatic aberration supervision feedback analysis is further performed on the file feature image in an information feedback mode, and the printing accuracy is improved. The printing quality and the ink using precision of the printer are improved, and the time period defect information and the ink using hindering information are analyzed in a deep mode, so that interference factors of poor printing quality are analyzed from multiple angles, and targeted management and control are carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of printer remote control, and in particular to a printer remote control method, system and storage medium based on the Internet of Things. Background Art

[0002] There are many types of printers, and different printers can print different images and texts to facilitate users to handle different businesses. Currently, commonly used printers are connected to a control terminal (such as a computer) through a wired method, or connected to a user's smart terminal (such as a mobile phone) through a wireless method. When printing is required, the smart terminal or the control terminal sends a print command and the data required for printing to the printer, allowing the printer to perform the printing operation.

[0003] However, in the prior art, it is impossible to perform security authentication and transmission supervision on the remote printing control of the printer, thereby reducing the printing security and file integrity of the printer, and it is impossible to supervise and analyze the quality of the printed files, thereby failing to timely control the printer, reducing the printing quality and the timeliness of printing control, and it is impossible to quantitatively evaluate the factors affecting the printing quality from multiple angles, and it is impossible to make targeted control of the influencing factors;

[0004] In view of the above technical defects, a solution is now proposed. Summary of the invention

[0005] The purpose of the present invention is to provide a printer remote control method, system and storage medium based on the Internet of Things to solve the technical defects mentioned above. The present invention initially analyzes from two points of pre-press authentication and transmission evaluation. On the one hand, it understands whether the remote control end has printing authority, and on the other hand, it helps to understand the potential transmission risk of the file to be printed. By means of information feedback, the file feature image is further subjected to regional color difference supervision feedback analysis to improve the printing quality and ink accuracy of the printer. In-depth analysis is performed on the basic operation defect interference magnitude discrimination of the time period defect information to understand whether the low printing quality is affected by the operation of the target printer itself, so as to manage and adjust the target printer according to the information feedback, and ink monitoring and alarm processing operations are performed on the ink obstruction information to understand whether the low printing quality is caused by ink and nozzles, so as to rationally manage the ink and nozzles according to the information feedback to reduce the influence of ink quality and nozzle management on printing quality, so as to analyze the interference factors of poor printing quality from multiple angles, so as to make targeted management and control.

[0006] The object of the present invention can be achieved by the following technical solutions: A printer remote control system based on the Internet of Things, including a remote Internet of Things control center, a pre-press safety evaluation unit, a regional difference verification unit, a basic operation period evaluation and analysis unit, an ink obstruction quantitative analysis unit and a printing control unit;

[0007] The remote IoT control center is used to retrieve the IoT permission information of the target printer and send the IoT permission information to the prepress security evaluation unit;

[0008] The prepress security assessment unit is used to perform prepress authentication and transmission assessment feedback analysis on the received IoT permission information, compare and analyze the obtained permission string with the authorization list, and obtain an authorization signal or an unauthorized signal. When the authorization signal is generated, the obtained IoT risk information is further discriminated and analyzed to obtain a transmission operation and maintenance signal or a printing signal;

[0009] The regional difference verification unit is used to respond to the printing signal, collect the document feature image after printing by the target printer, perform regional color difference supervision feedback analysis on the document feature image, compare and analyze the obtained image ink difference value and font color difference index, and obtain a high-level quality signal or a low-level quality signal;

[0010] The basic operation period evaluation and analysis unit is used to respond to low-level quality signals and collect period defect information of the target printer, and at the same time, perform basic operation defect interference level discrimination analysis on the period defect information, perform discrimination processing on the obtained operation influence coefficient, and obtain an operation effective signal or an influence signal;

[0011] The ink obstruction quantitative analysis unit is used to respond to low-quality signals, collect ink obstruction information of the target printer, perform ink monitoring and alarm processing operations on the ink obstruction information, and obtain a qualified signal or an alarm signal.

[0012] Preferably, the pre-press authentication and transmission evaluation feedback analysis process is as follows:

[0013] The target printer's operating time period is collected and set as a time threshold, and the IoT permission information between the remote control terminal and the target printer within the time threshold is obtained. The IoT permission information represents the control terminal number. Characters of the IoT permission information are extracted, and the string composed of the characters extracted from the IoT permission information is set as the permission string. The permission string is compared and analyzed with the authorization list to obtain an authorization signal or an unauthorized signal.

[0014] Preferably, when an authorization signal is generated, the IoT risk information between the remote control terminal and the target printer within the time threshold is obtained. The IoT risk information represents the sum of the number of network defect information occurring during the period when the remote control terminal sends the file and the number of connection disconnections. The defect information includes freezes and delays. The IoT risk information is discriminated and analyzed to obtain a transmission operation and maintenance signal or a printing signal.

[0015] Preferably, the regional color difference supervision feedback analysis process is as follows:

[0016] Acquire a feature image of a document printed by a target printer within a time threshold, and divide the feature image of the document into a text area image and an actual image area;

[0017] The image area in the standard document feature image is obtained and set as the standard image area. The actual image area is compared and analyzed with the standard image area. The difference value between the actual image area and the standard image area is obtained and set as the image ink difference value. The image ink difference value is discriminated and analyzed to obtain a color deviation signal or a normal signal.

[0018] Preferably, the actual gray value mean of the text corresponding to the text area image is obtained, and the gray value mean of the text corresponding to the text area image in the standard document feature image is obtained, and it is set as the standard gray value mean, and the difference between the actual gray value mean and the standard gray value mean is set as the font color difference index, and the font color difference index is discriminated and analyzed to obtain the ink defect signal or the standard signal;

[0019] If the normal signal and the standard signal are generated simultaneously, a high-quality signal is obtained; if the normal signal and the standard signal are not generated simultaneously, a low-quality signal is obtained.

[0020] Preferably, the basic operation defect interference level discrimination analysis process is as follows:

[0021] The time threshold is divided into i sub-time periods, where i is a natural number greater than zero, and the time period defect information of the target printer in each sub-time period is obtained, the time period defect information includes the mechanical vibration amplitude and the noise characteristic value, and the number of values ​​in the time period defect information that exceed the preset threshold is set as the time period risk coefficient;

[0022] The time period parameter information of the target printer in each sub-time period is obtained, and the time period parameter information includes the operating power and the total energy consumption. The number of values ​​in the time period parameter information exceeding the preset threshold is set as the imbalance offset coefficient; the time period risk coefficient and the imbalance offset coefficient are compared and analyzed with the preset time period risk coefficient threshold and the preset imbalance offset coefficient threshold that are internally entered and stored, and the number of time period risk coefficients and imbalance offset coefficients that are greater than or equal to the preset time period risk coefficient threshold and the preset imbalance offset coefficient threshold is set as the mechanical interference evaluation coefficient, and the mechanical interference evaluation coefficient is discriminated and analyzed to obtain a stable signal and an interference signal;

[0023] The number of generated interference signals is obtained, the number of generated interference signals is set as the operation influence coefficient, and the operation influence coefficient is discriminated and processed to obtain an operation effective signal or an influence signal.

[0024] Preferably, the ink usage monitoring alarm processing operation process is as follows:

[0025] The ink usage obstruction information of the target printer within the time threshold is obtained, and the ink usage obstruction information includes the ink remaining amount and the ink remaining period of the ink cartridge. The ink remaining period indicates the length of time between the current date and the expiration date of the ink. The number of values ​​corresponding to the ink usage obstruction information lower than the preset threshold is obtained, and the value is set as the material interference value;

[0026] Acquire the appearance feature image of the nozzle in the target printer within the time threshold, compare and analyze the appearance feature image with the standard appearance feature image, and set the difference value between the appearance feature image and the standard appearance feature image as the adhesion hindrance value; compare and analyze the material interference value and the adhesion hindrance value with the preset material interference value threshold and the preset adhesion hindrance value threshold entered and stored internally to obtain a qualified signal or an alarm signal.

[0027] The beneficial effects of the present invention are as follows:

[0028] (1) The present invention initially analyzes from two points of pre-press authentication and transmission evaluation. On the one hand, it understands whether the remote control end has the printing authority. On the other hand, it helps to understand the potential transmission risks of the file to be printed, and then intuitively understand the potential risks before the target printer prints, so that the file to be printed can be verified before printing to ensure the integrity and security of the file to be printed. By means of information feedback, the regional color difference supervision feedback analysis of the file feature image is further performed to intuitively understand whether the printing ink quality of the printed file is qualified, so as to timely make targeted management and control of the target printer to improve the printing quality and ink accuracy of the printer;

[0029] (2) The present invention conducts basic operation defect interference level discrimination analysis on the time period defect information in an in-depth manner, so as to understand whether the low print quality is affected by the operation of the target printer itself, so as to manage and adjust the target printer according to the information feedback, and perform ink monitoring and alarm processing operations on the ink obstruction information, so as to understand whether the low print quality is caused by the ink and the nozzle, so as to rationally manage the ink and the nozzle according to the information feedback, so as to reduce the impact of ink quality and nozzle management on print quality, so as to analyze the interference factors of poor print quality from multiple angles, so as to make targeted management and control. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be further described below in conjunction with the accompanying drawings;

[0031] Figure 1 It is a flowchart of the system of the present invention;

[0032] Figure 2 It is a reference diagram for analysis of the method of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0034] Embodiment 1:

[0035] See also Figure 1 to Figure 2 As shown, the present invention is a printer remote control system based on the Internet of Things, including a remote Internet of Things control center, a prepress safety evaluation unit, a regional difference verification unit, a basic operation period evaluation and analysis unit, an ink use obstruction quantitative analysis unit and a printing control unit, the remote Internet of Things control center is connected to the prepress safety evaluation unit in a one-way communication, the prepress safety evaluation unit is connected to the regional difference verification unit and the printing control unit in a one-way communication, the regional difference verification unit is connected to the basic operation period evaluation and analysis unit and the printing control unit in a one-way communication, the basic operation period evaluation and analysis unit is connected to the printing control unit in a one-way communication, and the printing control unit is connected to the ink use obstruction quantitative analysis unit in a two-way communication;

[0036] The remote IoT control center is used to retrieve the IoT permission information of the target printer and send the IoT permission information to the prepress security evaluation unit;

[0037] The prepress security assessment unit is used to perform prepress authentication and transmission assessment feedback analysis on the received IoT permission information to understand whether the remote control end has the printing permission and whether the risk of transmitting files is too high, so as to intuitively understand the potential risks before the target printer prints, so as to verify the files to be printed before printing, so as to ensure the integrity of the files to be printed. The specific prepress authentication and transmission assessment feedback analysis process is as follows:

[0038] The target printer operation time period is collected and set as the time threshold. The IoT permission information between the remote control terminal and the target printer within the time threshold is obtained. The IoT permission information indicates the control terminal number. Characters are extracted from the IoT permission information, and the string composed of the characters extracted from the IoT permission information is set as the permission string. The permission string is compared and analyzed with the authorization list:

[0039] If the permission string belongs to the authorization list, an authorization signal is generated;

[0040] If the permission string does not belong to the authorization list, an unauthorized signal is generated. When the unauthorized signal is generated, the authentication page is immediately adjusted to improve the remote control security of the target printer;

[0041] When the authorization signal is generated, the IoT risk information between the remote control terminal and the target printer within the time threshold is obtained. The IoT risk information indicates the sum of the number of network defect information and the number of disconnection times during the period when the remote control terminal sends the file. The defect information includes freezes, delays, etc., and the IoT risk information is discriminated and analyzed:

[0042] If the IoT risk information is greater than or equal to the preset IoT risk information threshold, a transmission operation and maintenance signal is generated;

[0043] If the IoT risk information is less than the preset IoT risk information threshold, a print signal is generated, and the transmission operation and maintenance signal or the print signal is sent to the print control unit. After receiving the transmission operation and maintenance signal or the print signal, the print control unit immediately displays the preset warning text corresponding to the transmission operation and maintenance signal or the print signal, so as to intuitively understand the potential risks of the target printer before printing, so as to verify the documents to be printed before printing, so as to ensure the integrity of the documents to be printed;

[0044] When a printing signal is generated, the regional difference verification unit is used to respond to the printing signal, and at the same time collect the file feature image after printing by the target printer, and perform regional color difference supervision feedback analysis on the file feature image, so as to intuitively understand whether the printing ink quality of the printed file is qualified, so as to make targeted control of the target printer in time to improve the printing quality and ink accuracy of the printer. The specific regional color difference supervision feedback analysis process is as follows:

[0045] Acquire a feature image of a document printed by a target printer within a time threshold, and divide the feature image of the document into a text area image and an actual image area;

[0046] The image area in the standard document feature image is obtained and set as the standard image area. The actual image area is compared and analyzed with the standard image area. The difference value between the actual image area and the standard image area is obtained and set as the image ink difference value. The image ink difference value is then discriminated and analyzed:

[0047] If the image ink usage difference value is greater than or equal to a preset image ink usage difference value threshold, a color deviation signal is generated;

[0048] If the image ink usage difference value is less than the preset image ink usage difference value threshold, a normal signal is generated;

[0049] The actual grayscale value mean of the text corresponding to the text area image is obtained, and the grayscale value mean of the text corresponding to the text area image in the standard file feature image is obtained, and it is set as the standard grayscale value mean, and the difference between the actual grayscale value mean and the standard grayscale value mean is set as the font color difference index, and the font color difference index is discriminated and analyzed:

[0050] If the font color difference index is greater than or equal to a preset font color difference index threshold, an ink defect signal is generated;

[0051] If the font color difference index is less than a preset font color difference index threshold, a standard signal is generated;

[0052] If a normal signal and a standard signal are generated simultaneously, a high-quality signal is obtained;

[0053] If the normal signal and the standard signal are not generated at the same time, a low-level quality signal is obtained, and the high-level quality signal or the low-level quality signal is sent to the printing control unit. After receiving the high-level quality signal or the low-level quality signal, the printing control unit immediately displays the preset warning text corresponding to the high-level quality signal or the low-level quality signal, so as to intuitively understand whether the printing ink quality of the printed document is qualified, so as to make targeted control of the target printer in time to improve the printing quality and ink accuracy of the printer.

[0054] Embodiment 2:

[0055] When a low-quality signal is generated, the basic operation period evaluation and analysis unit is used to respond to the low-quality signal and collect the period defect information of the target printer. At the same time, the basic operation defect interference level discrimination analysis is performed on the period defect information to understand whether the low print quality is affected by the operation of the target printer itself, so as to manage and adjust the target printer according to the information feedback. The specific basic operation defect interference level discrimination analysis process is as follows:

[0056] The time threshold is divided into i sub-time periods, where i is a natural number greater than zero, and the time period defect information of the target printer in each sub-time period is obtained. The time period defect information includes the mechanical vibration amplitude, noise characteristic value, etc. The number of values ​​in the time period defect information exceeding the preset threshold is set as the time period risk coefficient. It should be noted that the time period risk coefficient is an influencing parameter reflecting the working conditions during the operation of the target printer;

[0057] The time period parameter information of the target printer in each sub-time period is obtained, and the time period parameter information includes operating power, total energy consumption, etc. The number of values ​​in the time period parameter information exceeding the preset threshold is set as the imbalance offset coefficient. It should be noted that the imbalance offset coefficient is an influencing parameter reflecting the working conditions during the operation of the target printer. The larger the value of the imbalance offset coefficient, the greater the risk of abnormal operation of the target printer;

[0058] The time period risk coefficient and imbalance offset coefficient are compared and analyzed with the preset time period risk coefficient threshold and preset imbalance offset coefficient threshold that are stored internally, and the number of time period risk coefficients and imbalance offset coefficients that are greater than or equal to the preset time period risk coefficient threshold and preset imbalance offset coefficient threshold is set as the mechanical interference evaluation coefficient, and the mechanical interference evaluation coefficient is discriminated and analyzed:

[0059] If the mechanical interference evaluation coefficient = 0, a stable signal is generated;

[0060] If the mechanical interference evaluation coefficient = 1 or the mechanical interference evaluation coefficient = 2, an interference signal is generated.

[0061] The number of generated interference signals is obtained, the number of generated interference signals is set as the operation influence coefficient, and the operation influence coefficient is judged:

[0062] If the operation influence coefficient is equal to zero, an operation valid signal is generated;

[0063] If the operation influence coefficient is not equal to zero, an influence signal is generated, and the operation effective signal or the influence signal is sent to the printing control unit. After receiving the operation effective signal or the influence signal, the printing control unit immediately displays the preset warning text corresponding to the operation effective signal or the influence signal, so as to understand whether the operation of the target printer itself has an impact on the printing quality, so as to manage and adjust the target printer according to the information feedback to improve the printing quality;

[0064] When a low-quality signal is generated, the ink usage blockage quantitative analysis unit is used to respond to the low-quality signal, collect the ink usage blockage information of the target printer, and perform ink usage monitoring alarm processing operations on the ink usage blockage information, so as to understand whether the low print quality is caused by the ink and the nozzle, so as to rationally manage the ink and the nozzle according to the information feedback, so as to reduce the influence of the ink quality and nozzle management on the print quality. The specific ink usage monitoring alarm processing operation process is as follows:

[0065] The ink usage obstruction information of the target printer within the time threshold is obtained. The ink usage obstruction information includes the ink remaining amount in the ink cartridge, the ink remaining period, etc. The ink remaining period indicates the time between the current date and the expiration date of the ink. The number of values ​​corresponding to the ink usage obstruction information lower than the preset threshold is obtained, and it is set as the material interference value. It should be noted that the larger the value of the material interference value, the greater the risk of abnormal ink usage effect of the target printer;

[0066] Obtain an appearance feature image of a nozzle in a target printer within a time threshold, compare and analyze the appearance feature image with a standard appearance feature image, and set the difference between the appearance feature image and the standard appearance feature image as an adhesion hindrance value. It should be noted that the greater the value of the adhesion hindrance value, the greater the risk of nozzle blockage in the target printer and the greater the risk of inkjet loss of control;

[0067] Compare and analyze the material interference value and adhesion hindrance value with the preset material interference value threshold and preset adhesion hindrance value threshold stored in the internal storage:

[0068] If the material interference value is less than the preset material interference value threshold, and the adhesion hindrance value is less than the preset adhesion hindrance value threshold, a qualified signal is generated;

[0069] If the material interference value is less than the preset material interference value threshold, and the adhesion hindrance value is less than the preset adhesion hindrance value threshold, an alarm signal is generated, and the qualified signal or the alarm signal is sent to the printing control unit. After receiving the qualified signal or the alarm signal, the printing control unit immediately displays the preset warning text corresponding to the qualified signal or the alarm signal, so as to rationally manage the ink and the nozzle according to the information feedback, so as to reduce the impact of the ink quality and the nozzle management on the printing quality, thereby helping to improve the control effect and operation reliability of the target printer.

[0070] Embodiment three:

[0071] The remote control method of a printer based on the Internet of Things includes the following steps:

[0072] Step 1: It is used to retrieve the IoT permission information, and at the same time, perform pre-printing authentication and transmission evaluation feedback analysis on the IoT permission information. If an authorization signal is obtained, it will enter step 2. If an unauthorized signal is obtained, it will feedback output;

[0073] Step 2: Based on the pre-press transmission evaluation analysis under the authorization signal, the collected IoT risk information is discriminated and analyzed. If a printing signal is obtained, step 3 is entered. If a transmission operation and maintenance signal is obtained, feedback output is given;

[0074] Step 3: Perform regional color difference supervision feedback analysis based on information progression, compare and analyze the obtained image ink difference value and font color difference index, and output the obtained high-level quality signal or low-level quality signal as feedback;

[0075] Step 4: In response to the low-quality signal, the basic operation defect interference level discrimination analysis is performed from the basic operation perspective of the target printer, the obtained operation influence coefficient is discriminated and processed, and the obtained operation effective signal or influence signal is fed back and output;

[0076] Step 5: In response to the low-level quality signal, the ink monitoring alarm processing operation is performed from the two points of the ink and the nozzle of the target printer, the obtained material interference value and adhesion obstruction value are compared and analyzed, and the obtained qualified signal or alarm signal is fed back and output;

[0077] A computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements a printer remote control method based on the Internet of Things;

[0078] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing related hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes in the embodiments of the above-mentioned methods.

[0079] In summary, the present invention preliminarily analyzes from two points of pre-press authentication and transmission evaluation. On the one hand, it understands whether the remote control end has the printing authority, and on the other hand, it helps to understand the potential transmission risks of the file to be printed, and then intuitively understand the potential risks before the target printer prints, so that the file to be printed can be verified before printing to ensure the integrity and security of the file to be printed, and further perform regional color difference supervision feedback analysis on the file feature image by means of information feedback, so as to intuitively understand whether the printing ink quality of the printed file is qualified, so as to timely make targeted control of the target printer to improve the printing quality and ink accuracy of the printer;

[0080] An in-depth analysis of the interference magnitude of basic defects is performed on the time period defect information to understand whether the low print quality is affected by the operation of the target printer itself, so that the target printer can be managed and adjusted according to the information feedback, and ink monitoring and alarm processing operations are performed on the ink obstruction information to understand whether the low print quality is caused by ink and nozzles, so that the ink and nozzles can be rationally managed according to the information feedback to reduce the impact of ink quality and nozzle management on print quality, and the interference factors of poor print quality can be analyzed from multiple angles to make targeted management and control.

[0081] The threshold is set to facilitate comparison. The size of the threshold depends on the amount of sample data and the number of bases set by technicians in this field for each group of sample data; as long as it does not affect the proportional relationship between the parameter and the quantized value.

[0082] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. The printer remote control system based on the Internet of Things is characterized by: It includes remote IoT control center, pre-press safety assessment unit, regional difference verification unit, basic operation period assessment and analysis unit, ink obstruction quantitative analysis unit and printing control unit; The remote IoT control center is used to retrieve the IoT permission information of the target printer and send the IoT permission information to the prepress security evaluation unit; The prepress security assessment unit is used to perform prepress authentication and transmission assessment feedback analysis on the received IoT permission information, compare and analyze the obtained permission string with the authorization list, and obtain an authorization signal or an unauthorized signal. When the authorization signal is generated, the obtained IoT risk information is further discriminated and analyzed to obtain a transmission operation and maintenance signal or a printing signal; The regional difference verification unit is used to respond to the printing signal, collect the document feature image after printing by the target printer, perform regional color difference supervision feedback analysis on the document feature image, compare and analyze the obtained image ink difference value and font color difference index, and obtain a high-level quality signal or a low-level quality signal; The basic operation period evaluation and analysis unit is used to respond to low-level quality signals and collect period defect information of the target printer, and at the same time, perform basic operation defect interference level discrimination analysis on the period defect information, perform discrimination processing on the obtained operation influence coefficient, and obtain an operation effective signal or an influence signal; The ink obstruction quantitative analysis unit is used to respond to low-quality signals, collect ink obstruction information of the target printer, perform ink monitoring and alarm processing operations on the ink obstruction information, and obtain a qualified signal or an alarm signal.

2. The printer remote control system based on the Internet of Things according to claim 1 is characterized in that: The pre-press certification and transmission evaluation feedback analysis process is as follows: The target printer's operating time period is collected and set as a time threshold, and the IoT permission information between the remote control terminal and the target printer within the time threshold is obtained. The IoT permission information represents the control terminal number. Characters of the IoT permission information are extracted, and the string composed of the characters extracted from the IoT permission information is set as the permission string. The permission string is compared and analyzed with the authorization list to obtain an authorization signal or an unauthorized signal.

3. The printer remote control system based on the Internet of Things according to claim 2 is characterized in that: When the authorization signal is generated, the IoT risk information between the remote control end and the target printer within the time threshold is obtained. The IoT risk information indicates the sum of the number of network defect information occurring during the period when the remote control end sends the file and the number of connection disconnections. The defect information includes freezes and delays. The IoT risk information is discriminated and analyzed to obtain a transmission operation and maintenance signal or a printing signal.

4. The printer remote control system based on the Internet of Things according to claim 1 is characterized in that: The regional color difference supervision feedback analysis process is as follows: Acquire a feature image of a document printed by a target printer within a time threshold, and divide the feature image of the document into a text area image and an actual image area; The image area in the standard document feature image is obtained and set as the standard image area. The actual image area is compared and analyzed with the standard image area. The difference value between the actual image area and the standard image area is obtained and set as the image ink difference value. The image ink difference value is discriminated and analyzed to obtain a color deviation signal or a normal signal.

5. The printer remote control system based on Internet of Things according to claim 4 is characterized in that: The actual grayscale value mean of the text corresponding to the text area image is obtained, and the grayscale value mean of the text corresponding to the text area image in the standard document feature image is obtained, and it is set as the standard grayscale value mean, and the difference between the actual grayscale value mean and the standard grayscale value mean is set as the font color difference index, and the font color difference index is discriminated and analyzed to obtain an ink defect signal or a standard signal; If the normal signal and the standard signal are generated simultaneously, a high-quality signal is obtained; if the normal signal and the standard signal are not generated simultaneously, a low-quality signal is obtained.

6. The printer remote control system based on the Internet of Things according to claim 1 is characterized in that: The process of discriminating and analyzing the interference level of the basic operation defect is as follows: The time threshold is divided into i sub-time periods, where i is a natural number greater than zero, and the time period defect information of the target printer in each sub-time period is obtained, the time period defect information includes the mechanical vibration amplitude and the noise characteristic value, and the number of values ​​in the time period defect information that exceed the preset threshold is set as the time period risk coefficient; Obtaining time period parameter information of the target printer in each sub-time period, the time period parameter information including operating power and total energy consumption, and setting the number of values ​​in the time period parameter information that exceed a preset threshold as an imbalance offset coefficient; Compare and analyze the time period risk coefficient and the imbalance offset coefficient with the preset time period risk coefficient threshold and the preset imbalance offset coefficient threshold that are stored internally, set the number of time period risk coefficients and imbalance offset coefficients that are greater than or equal to the preset time period risk coefficient threshold and the preset imbalance offset coefficient threshold as the mechanical interference evaluation coefficient, and perform discriminant analysis on the mechanical interference evaluation coefficient to obtain a stable signal and an interference signal; The number of generated interference signals is obtained, the number of generated interference signals is set as the operation influence coefficient, and the operation influence coefficient is discriminated and processed to obtain an operation effective signal or an influence signal.

7. The printer remote control system based on the Internet of Things according to claim 1 is characterized in that: The ink usage monitoring alarm processing operation process is as follows: The ink usage obstruction information of the target printer within the time threshold is obtained, and the ink usage obstruction information includes the ink remaining amount and the ink remaining period of the ink cartridge. The ink remaining period indicates the length of time between the current date and the expiration date of the ink. The number of values ​​corresponding to the ink usage obstruction information lower than the preset threshold is obtained, and the value is set as the material interference value; Acquire the appearance feature image of the nozzle in the target printer within the time threshold, compare and analyze the appearance feature image with the standard appearance feature image, and set the difference value between the appearance feature image and the standard appearance feature image as the adhesion hindrance value; compare and analyze the material interference value and the adhesion hindrance value with the preset material interference value threshold and the preset adhesion hindrance value threshold entered and stored internally to obtain a qualified signal or an alarm signal.

8. A printer remote control method based on the Internet of Things, the method being applicable to a printer remote control system based on the Internet of Things as claimed in any one of claims 2 to 7, characterized in that: The following steps are involved: Step 1: It is used to retrieve the IoT permission information, and at the same time, perform pre-printing authentication and transmission evaluation feedback analysis on the IoT permission information. If an authorization signal is obtained, it will enter step 2. If an unauthorized signal is obtained, it will feedback output; Step 2: Based on the pre-press transmission evaluation analysis under the authorization signal, the collected IoT risk information is discriminated and analyzed. If a printing signal is obtained, step 3 is entered. If a transmission operation and maintenance signal is obtained, feedback output is given; Step 3: Perform regional color difference supervision feedback analysis based on information progression, compare and analyze the obtained image ink difference value and font color difference index, and output the obtained high-level quality signal or low-level quality signal as feedback; Step 4: In response to the low-quality signal, the basic operation defect interference level discrimination analysis is performed from the basic operation perspective of the target printer, the obtained operation influence coefficient is discriminated and processed, and the obtained operation effective signal or influence signal is fed back and output; Step 5: It is used to respond to low-level quality signals, perform ink monitoring and alarm processing operations from two points of the target printer, namely the ink and the nozzle, compare and analyze the obtained material interference value and adhesion hindrance value, and output the obtained qualified signal or alarm signal as feedback.

9. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the method according to claim 8 is implemented.

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