Label printer for transformer substation and control method thereof

Abstract

The invention discloses a label printer for a transformer substation and a control method thereof.The label printer for the transformer substation comprises a power module, a main control module, a liquid crystal display module, a voice recognition module, a wireless interface, a USB interface, an image recognition and conversion module and a printing module.The label printer for the transformer substation is provided with a solar power supply module, so that dependence on an external power source is reduced; the system adapts to the complex environment of the transformer substation; label templates in various standard formats are built in, and localized modification and personalized manufacturing are supported, so that the standardization, integrity and accuracy of labels are effectively ensured, and the operation and maintenance working efficiency and quality are improved; the voice recognition and wireless connection functions greatly facilitate editing and operation, reduce the manual input workload and improve the convenience; the image identification conversion module combines reading of electronic drawings and comparison of on-site identification, can timely discover and automatically print wrong label identification, reduces manual checking workload and error rate, and powerfully guarantees operation safety and management accuracy of transformer station equipment.

Description

Technical Field

[0001] The present invention relates to the technical field of substation equipment, and in particular to a label printer for a substation and a control method thereof. Background Art

[0002] As a key hub of the power system, the substation is equipped with a large number of secondary equipment cabinets, including protection panels, measurement and control panels, switch panels, intelligent terminal panels, and control cabinets. These cabinets need to be posted with a variety of secondary labels, including pressure plate labels, circuit breaker labels, secondary circuit ferrules and labels, switch port labels, and fiber labels, to identify the equipment model and its functions. The integrity and accuracy of such labels are extremely critical for the normal operation of the equipment, abnormal condition analysis, and operation operations, and are also the key points that need to be strictly controlled during the on-site acceptance process.

[0003] However, there are many defects in the production of secondary labels for substations. First, the labels of different stations and even different cabinets at the same station show significant differences. Specifically, there are inconsistencies in label size, font size format, and label terminology, which not only destroys the overall aesthetics, but also has a negative impact on the accurate identification of the operation site, increases the risk of misjudgment, and is not conducive to the operation and maintenance personnel to quickly and accurately locate and operate related equipment.

[0004] Secondly, a large number of secondary labels often need to be printed on the site of infrastructure projects and technical transformation projects. Due to the lack of a unified format and standard specifications, the labels have to be repeatedly modified during the acceptance process. This process seriously affects work efficiency. A large number of repeated printing operations lead to unnecessary consumption of materials, as well as waste of human and material resources, increasing project costs and time costs, and reducing the overall benefits of substation construction and transformation.

[0005] Third, existing portable or handheld labeling machines have obvious shortcomings. Most of these labeling machines need to be connected to the internal power supply of the substation when in use, and their input and editing functions are not convenient and efficient enough, which greatly restricts the progress of on-site work and reduces work efficiency. Some labeling machines even need to use a laptop for editing operations, and they are too dependent on external devices. In the complex on-site environment of the substation, this operation method is extremely inconvenient, limiting the flexibility and timeliness of label production, and it is difficult to meet the needs of rapid on-site label production.

[0006] Fourth, given the large number of secondary circuits on-site in substations, the secondary circuit sleeves currently printed on-site often do not correspond to the design drawings. The workload of manually checking the consistency between on-site identification and drawings is extremely huge, consuming a lot of manpower and time. Once an error is found in the label or cable sleeve, it cannot be printed and replaced immediately. On-site staff must first record in detail all the label or sleeve information that needs to be changed, then print it in a centralized and unified manner, and then replace them one by one according to the records. This cumbersome process results in extremely low work efficiency, which seriously affects the efficient operation and management of substations. When repairing equipment failures or emergency maintenance, the processing time may be delayed due to untimely label replacement, posing a potential threat to the safe and stable operation of the power system. Summary of the invention

[0007] The technical problem to be solved by the present invention is to provide a label printer for a substation and a control method thereof, so as to realize standardized and efficient editing and printing of labels and timely comparison and correction of erroneous labels.

[0008] In order to solve the above technical problems, the present invention provides a label printer for a substation, comprising:

[0009] A power module, used to power the label printer;

[0010] A main control module, electrically connected to the power module, and used to control the operation of the label printer;

[0011] A liquid crystal display module, electrically connected to the main control module, for displaying the operating status and information of the label printer;

[0012] The voice recognition module is used for voice input when editing tags. The voice recognition module converts the received user voice signal into a digital signal after filtering and processing, and uses the language model to extract the information into commands and information recognizable by the main control module and transmits it to the main control module;

[0013] A wireless interface, electrically connected to the main control module, for realizing wireless connection with external devices;

[0014] A USB interface, electrically connected to the main control module, for realizing a wired connection with an external device;

[0015] An image recognition conversion module, electrically connected to the main control module, for recognizing image information on substation equipment and converting the recognition result into editable label template data;

[0016] The printing module is electrically connected to the main control module and is used to print out corresponding labels according to the edited label template data.

[0017] Preferably, the power module specifically includes:

[0018] Solar panels to power label printers when there is sufficient sunlight;

[0019] Energy storage device, used to balance the energy fluctuations caused by printing discontinuity and unstable energy input from solar panels;

[0020] The electric energy conversion device is used to convert the direct current converted by the external power supply into the direct current required by other modules through a DC-DC conversion circuit.

[0021] Preferably, the main control module uses a second-order linear anti-disturbance control strategy to control the DC-DC conversion circuit in the power conversion device to keep the output direct current constant.

[0022] Preferably, the label printer is preset with a pressure plate label template, a secondary circuit label template, a secondary circuit header template, a switch port configuration label template and a fiber channel label template.

[0023] The present invention also provides a control method for a label printer for a substation, comprising the following steps:

[0024] The main control unit receives a voice input print command selected by the user through the LCD panel or buttons;

[0025] The voice recognition module processes the received commands and information and transmits them to the main control unit;

[0026] The main control module determines whether the printed content is voice input content. If it is voice input content, it recognizes the voice input content to be printed. When the recognition is successful, the recognition result is fed back to the user through the LCD panel and the correction confirmation is required. Then the type to be printed is determined according to the voice command; if the recognition fails, the user is required to re-enter the voice through the LCD panel;

[0027] If the printed content is not the voice input content, the main control module determines whether the content to be printed can be identified from the non-voice input content. If it can be identified, the type of the content to be printed is determined according to the voice command. If it cannot be identified, the user is asked to re-enter the content through the LCD display panel.

[0028] The main control module determines whether the type to be printed is successfully identified. If so, the main control module transmits the information to be printed to the printer of the corresponding print type in the printer module; if not, the problem is fed back to the user through the LCD display panel and the user is asked to select the print type.

[0029] Preferably, before the speech recognition module processes, a sound signal preprocessing step is also included, specifically:

[0030] The microphone and its processing circuit are used to filter and digitize the sound signal input by the user to convert it into a digital signal that can be processed by the speech recognition module.

[0031] Preferably, the method further comprises a command and information extraction step, specifically:

[0032] The speech recognition module uses the language model to analyze the digital signal and extract the commands and information that the main control module can recognize for subsequent processing.

[0033] Preferably, the method further comprises a step of determining a print content acquisition method, specifically:

[0034] The main control module determines whether the source of the printed content is voice input or other methods by querying key words and phrases and comparing them with preset common sentences, and selects the corresponding printed content acquisition strategy accordingly.

[0035] Preferably, the method further comprises an image recognition comparison and printing step, specifically:

[0036] The main control module receives the image recognition and comparison command triggered by the user through the LCD panel, and identifies the secondary cabinet image information transmitted by the image conversion module, including the cabinet number, terminal block number and secondary circuit cable sleeve number;

[0037] Based on the identified information, the main control module searches and compares the sleeve number of the corresponding terminal in the drawing file, performs a consistency check, and gives feedback or executes a printing operation based on the test results.

[0038] Preferably, the image recognition comparison and printing step further includes the following optimization steps:

[0039] Before image recognition, users are required to adjust the position of the secondary circuit cable sleeve to ensure recognition accuracy;

[0040] In the judgment of the set header number, fuzzy criteria are used to check whether the set header number conforms to the naming rules;

[0041] Adjust the credibility index and judgment threshold during comparison according to actual conditions;

[0042] For the heads that fail to be recognized or are inconsistent, options of re-photographing, scanning or manual printing are provided to meet different usage needs.

[0043] The implementation of the present invention has the following beneficial effects: by configuring a solar power supply module, the dependence on external power supply is reduced, the system can adapt to the complex environment of the substation and save energy and protect the environment, thus ensuring long-term stable operation. It has built-in multiple standard format label templates and supports localized modification and personalized production, effectively ensuring the standardization, integrity and accuracy of labels, and improving the efficiency and quality of operation and maintenance. The voice recognition and wireless connection functions greatly facilitate editing and operation, reduce the workload of manual input, and improve convenience. The image recognition conversion module combines the reading of electronic drawings with on-site identification comparison, which can promptly detect and automatically print wrong label identification, reduce the workload and error rate of manual verification, and effectively ensure the safe operation and accurate management of substation equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0045] Figure 1 This is a structural block diagram of a label printer for a substation according to an embodiment of the present invention.

[0046] Figure 2 is a structural block diagram of a power supply module in an embodiment of the present invention.

[0047] Figure 3 Schematic diagram of a circuit of a power module in an embodiment of the present invention.

[0048] Figure 4 It is a schematic diagram of control information transmission between the power module and the main control module in an embodiment of the present invention.

[0049] Figure 5 It is a block diagram of the voltage stabilization control strategy of the power module in the embodiment of the present invention.

[0050] Figure 6 It is a flowchart of realizing the intelligent printing function by using voice input according to an embodiment of the present invention.

[0051] Figure 7 The present invention is a flowchart of a method of printing by manual input on a liquid crystal display screen.

[0052] Figure 8 It is a schematic diagram of a process of printing an incorrect secondary cable sleeve after image recognition and comparison in an embodiment of the present invention. DETAILED DESCRIPTION

[0053] The following descriptions of the embodiments are with reference to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented. In the description of the present invention, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "rear", "left", "right", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0054] Please refer to Figure 1 As shown, an embodiment of the present invention provides a label printer for a substation, comprising:

[0055] A power module, used to power the label printer;

[0056] A main control module, electrically connected to the power module, and used to control the operation of the label printer;

[0057] A liquid crystal display module, electrically connected to the main control module, for displaying the operating status and information of the label printer;

[0058] The voice recognition module is used for voice input when editing tags. The voice recognition module converts the received user voice signal into a digital signal after filtering and processing, and uses the language model to extract the information into commands and information recognizable by the main control module and transmits it to the main control module;

[0059] A wireless interface, electrically connected to the main control module, for realizing wireless connection with external devices;

[0060] A USB interface, electrically connected to the main control module, for realizing a wired connection with an external device;

[0061] An image recognition conversion module, electrically connected to the main control module, for recognizing image information on substation equipment and converting the recognition result into editable label template data;

[0062] The printing module is electrically connected to the main control module and is used to print out corresponding labels according to the edited label template data.

[0063] It can be seen from the above configuration that the embodiment of the present invention realizes an efficient and convenient label production method by integrating a power module, a main control module, a liquid crystal display module, a wireless interface, a USB interface, an image recognition conversion module and a printing module. The solar power supply system of the power module ensures the self-sufficiency of the equipment without an external power supply, and enhances the portability and applicability of the equipment. The image recognition conversion module can automatically identify the image information on the substation equipment and convert it into editable label template data, which greatly improves the accuracy and efficiency of label production. The printing module quickly prints out the corresponding label according to the edited label template data, ensuring the consistency and professionalism of the label. The overall design simplifies the label production process, reduces human errors, and improves the efficiency and safety of substation operation and maintenance.

[0064] Specifically, please combine Figure 2 As shown, in an embodiment of the present invention, the power module specifically includes a solar panel, an energy storage device, an electric energy conversion device, and an external power supply interface. The energy storage device has a certain capacity and can store energy. It is suitable for nighttime and no external power supply charging. The power module can not only supply energy to the energy storage device through an external power supply, but also use the solar panel to supply energy to the energy storage device under sufficient light conditions. The external power supply interface can realize the conversion of an external power supply (such as AC or DC in a substation) into a certain value of DC power in the power module, that is, the voltages of the external power interface, the energy storage device, and the DC side of the solar panel should be consistent. The function of the electric energy conversion device is to convert the DC power with a value of UDC1 into another DC power with a value of UDC2 required by other modules through a DC-DC conversion circuit. At the same time, it also has a current stabilization circuit and a filtering circuit to supply energy to other modules of the printer (main control module and printing module).

[0065] Figure 3 This is a circuit diagram of a power module in an embodiment of the present invention being powered by an external AC power supply.

[0066] The solar panel and its rectifier circuit correspond to Figure 2 The solar panel, external AC voltage and its rectifier circuit correspond to Figure 2 The external power supply and its interface, DCDC circuit, current stabilization circuit, and filter circuit correspond to Figure 2 The electric energy conversion device in.

[0067] The control of the power module is realized by the power control module in the main control module. The controlled objects are the two DC voltages UDC1 and UDC2 of the power module. It is necessary to use sampling units such as sensors and transmitters to convert the voltage signals of the two DC voltages UDC1 and UDC2 of the power module into digital signals and transmit them to the control unit in the power control module. The control unit calculates the control strategy and outputs trigger pulses for the DCDC circuit in the electric energy conversion device and the DCDC circuit in the energy storage device to achieve the control function. Figure 4 It is a control information transmission diagram between the power module and the main control module, wherein the solid arrows represent the energy transmission path, and the dotted arrows represent the information transmission path.

[0068] For label printers used at substations, the load is unstable due to the discontinuity of printing. Also, because the printer may move during use, the energy input through the solar panel is also unstable. Therefore, an energy storage device is needed to balance the energy to keep the DC voltage UDC1 constant. In order to keep the output DC voltage UDC2 constant, the DCDC circuit in the power conversion device needs to be controlled. The following is a control example of the power control module control unit in the main control module. Figure 5 As shown, the embodiment of the present invention adopts a power module voltage stabilization control strategy based on active disturbance rejection control.

[0069] Among them, UDCi* (i=1 or 2) represents the reference value of UDC1 or UDC2, UDCi (i=1 or 2) represents the sampling value of UDC1 or UDC2 transmitted to the control unit via the sampling unit, and u represents the control amount calculated by the control unit for output to the pulse output unit. Figure 5 The accused object Figure 4 The sampling unit, pulse output unit, energy storage device or electric energy conversion device and the signal circuit represented by the dotted line, and other parts are implemented by the program of the control unit.

[0070] The control strategy adopted by the control unit is a second-order linear active disturbance rejection control strategy, and its mathematical model is:

[0071]

[0072] Among them, the intermediate variable z 1 、z 2 、z 3 They represent the observed values ​​of the three state variables, namely, the actual output of the controlled object, the differential of the actual output of the controlled object, and the observation of the total disturbance; the intermediate variable e represents the observation error; β 1 , β 2 , β 3is the parameter to be adjusted, and b is the compensation coefficient, both of which need to be adjusted according to the actual parameters of the actual controlled converter station.

[0073] In addition to controlling the power supply module, the main control module is also used to process the drawing information input through the USB interface, the text information and instruction information input through the wireless interface, the text information and instruction information input through the LCD module, the field label information input through the image recognition module, the instruction information input through the device button, and the print information output to the printing module, the display information to the LCD display module, and the display information to the wireless interface. Its main control SOC is composed of a general-purpose ARM processor and peripheral storage circuits, and serves as a platform for the operation of the operating system and business programs. The external USB interface and wireless interface are used as the external communication interface of the system. The wireless interface also has Bluetooth communication function. The LCD display interface includes an LCD screen and a touch screen. The LCD screen is used for the display of the operating system and business program interface, and the touch screen is similar to the keyboard and mouse operation, which can complete the mouse click and cooperate with the screen soft keyboard to complete the text output operation. The structure of the image conversion and recognition module mainly includes a camera that is easy to move, which is connected to the device through a long data transmission line, and is used to shoot the actual secondary cabinet information on site for comparison with the drawing file. The captured image is transmitted to the main control module through the data bus. The on-site screen cabinet can also be photographed by the user's mobile phone, and the image information of the on-site equipment can be transmitted to the main control module through the corresponding USB interface.

[0074] The label printer customizes commonly used label templates for substations according to relevant standards, such as pressure plate labels, circuit breaker labels, secondary circuit labels, switch port configuration labels, fiber channel labels, etc. The label templates are updated regularly; at the same time, users can make localized modifications or personalized templates based on the label templates.

[0075] The label printer in the embodiment of the present invention also has a voice recognition function, and voice input can be used when editing labels. The process of using voice input to realize the intelligent printing function is as follows: Figure 6 As shown, the following steps are included:

[0076] Step 1: Trigger voice input printing

[0077] The user selects voice input or presses a button through the LCD panel to start the voice input printing command. After the main control module receives this command, it starts the voice input printing process.

[0078] Step 2: Voice information processing and transmission

[0079] The voice recognition module processes the received commands and information. It uses a microphone and its processing circuit to filter and process the sound signal input by the user into a digital signal, and then uses the language model to extract the information into commands and information that can be recognized by the main control module and pass it to the main control module.

[0080] Step 3: Determine how to obtain the printed content

[0081] The main control module determines whether the printed content is the content of voice input. There are two cases:

[0082] If the content to be printed is the content that the user requires the printer to print (method 1), then go to step 12;

[0083] If the content to be printed is the content in the drawing file received by the USB / wireless / Bluetooth module that the user requires the main control module to print (method 2), then go to step 4. The main control module makes a judgment by searching for key words in the voice input command and comparing it with the pre-set common sentences.

[0084] Step 4: Determine the content to be printed (non-voice input)

[0085] When it is determined that the content to be printed is the content in the drawing file input through the USB / wireless / Bluetooth interface, the main control module analyzes the input voice command or information and determines it by searching for key words and phrases and comparing them with common sentences set in advance.

[0086] Step 5: Identify the query printing method

[0087] Determine whether the query printing mode can be successfully identified. If the query printing mode can be successfully identified within the set time, go to step 6; otherwise, go to step 11.

[0088] Step 6: Retrieve the content to be printed

[0089] The main control module retrieves the content to be printed from the drawing file according to the received voice command. The specific process includes:

[0090] Determine the source of the drawing file based on the voice input command (it may be from the file input via USB / wireless / Bluetooth interface);

[0091] Determine the number of pages to be printed in the drawing file according to the voice input command;

[0092] The specific location of the content to be printed is determined according to the voice input instruction, and the content to be printed is identified. If the search is completed within the set time, go to step 7; otherwise, go to step 11.

[0093] Step 7: Determine whether the content to be printed is successfully identified

[0094] Determine whether the content to be printed is successfully identified. If the content to be printed can be successfully identified within the set time, proceed to step 8; otherwise, proceed to step 11.

[0095] Step 8: Determine the type of print

[0096] The main control module determines the type to be printed according to the voice command. Since different printing types (such as platen labels, secondary circuit labels, secondary circuit sleeves, etc.) require different templates, printing papers or sleeves, that is, different printers are required to implement the corresponding printing process, it is necessary to determine the printing type separately. If the type to be printed is determined within the set time, go to step 9; otherwise, go to step 15.

[0097] Step 9: Determine whether the type to be printed is successfully identified

[0098] Determine whether the type of the printout is successfully identified. If the type of the printout is successfully identified within the set time, proceed to step 10; otherwise, proceed to step 15.

[0099] Step 10: Pass the information to be printed and print

[0100] The main control module transmits the information to be printed to the printer of the corresponding printing type in the printer module, and the printer completes the printing function.

[0101] Step 11: Handle unsuccessful recognition (content or method to be printed)

[0102] When the main control module fails to successfully identify the content to be printed or the printing method to be printed during processing, the problem is fed back to the user through the LCD panel, and the user is required to re-enter the voice.

[0103] Step 12: Recognize the content to be printed by voice input

[0104] When it is determined in step 3 that the content to be printed is the content input by voice, the main control module recognizes it. If the recognition is completed within the set time, the process goes to step 13; otherwise, the process goes to step 11.

[0105] Step 13: Determine whether the voice input content to be printed is successfully recognized

[0106] Determine whether the content to be printed is successfully identified. If the content to be printed can be successfully identified within the set time, go to step 14; otherwise, go to step 11.

[0107] Step 14: Feedback recognition results and confirm

[0108] The recognition result is fed back to the user through the LCD panel, and the user is required to correct and confirm. Since the speech recognition result has a certain error rate, the user proceeds to step 8 after confirmation.

[0109] Step 15: Manually Select Print Type

[0110] When the print type cannot be determined by voice input, the problem is fed back to the user through the LCD panel, and the user is asked to select the print type. After the user selects, the process proceeds to step 10.

[0111] Figure 7 The process of printing by manual input using a liquid crystal display is shown, including the following steps:

[0112] Step 1: The main control module receives a manual input print mode command selected by the user through the LCD panel or buttons;

[0113] Step 2: The main control module obtains the print type manually selected by the user;

[0114] Step 3: The main control module obtains the print content manually input by the user;

[0115] Step 4: The main control module transmits the information to be printed to the printer of the corresponding printing type in the printer module.

[0116] The image recognition comparison function of the embodiment of the present invention is mainly completed by the main control module and the image recognition conversion module, and is specifically used to compare the secondary circuit terminal row number and the secondary cable circuit number in the secondary panel cabinet of the substation with the drawing file, and reprint the wrong secondary cable circuit number. Figure 8 As shown, the following steps are included:

[0117] Step 1: The main control module receives the command from the user to select image recognition and comparison through the LCD panel. When using the image recognition and comparison printing function, the user needs to select the corresponding command on the LCD panel to trigger the program of the main control module.

[0118] Step 2: The main control module receives the secondary cabinet image information obtained by the user through the image conversion module and identifies it. The user needs to use the lens in the configured image recognition conversion module to take a photo and scan the secondary cabinet to be checked, including the cabinet number, the terminal row number behind the cabinet, the sleeve number of each secondary circuit cable and other information. Note that before scanning, the user needs to rotate the secondary circuit cable sleeve in the cabinet to be scanned to the position facing the cabinet door, and straighten the secondary cable to make it as vertical as possible to the terminal row to ensure the correct conversion of the image recognition conversion module. The substation terminal row and secondary circuit cable sleeve recognition method adopted by the main control module can be implemented by existing computer vision technologies such as sliding window detection and target detection methods. Through this step, the main control module will identify and extract the secondary cabinet number, secondary cabinet terminal row number, secondary circuit cable sleeve number and its corresponding terminal row number from the pictures of the secondary cabinet, the secondary cabinet terminal row, and the secondary circuit cable sleeve.

[0119] Step 3: Determine whether the cabinet number is successfully identified. Determine whether the cabinet number of the cabinet to be checked can be successfully identified in the information identified in step 2. The determination method is to check whether the identified cabinet number is included in the drawing files obtained through each interface. If yes, proceed to step 4, otherwise, proceed to step 11.

[0120] Step 4: Determine whether the number of the i-th terminal row is successfully identified. Determine whether the numbers of each terminal row in the panel cabinet to be checked can be successfully identified in the information identified in step 2. The determination method is to query whether the panel cabinet contains the identified terminal row number in the drawing files obtained through each interface. If yes, proceed to step 5, otherwise, proceed to step 11.

[0121] Step 5: The main control module uses the identified cabinet number and terminal block number to query the correct sleeve number of the j-th terminal in the drawing file. Because there are many secondary cables to be checked in the cabinet to be checked, and the corresponding terminal blocks and secondary circuits to be checked are many, it is necessary to check the sleeve numbers of the secondary circuit cables from top to bottom in the order of the drawing file. The purpose of step 5 is to use the known correct drawing information to query whether the j-th terminal of the i-th terminal row that the current program needs to check is connected to a secondary cable. If a cable is found, that is, the cable sleeve number is found, then go to step 6. If there is no cable connected to the terminal, that is, the cable sleeve number is found to be empty, then go to the next terminal for verification.

[0122] Step 6: Determine whether the actual cable gland number is successfully identified. In the information identified in step 2, determine whether the secondary circuit cable gland number corresponding to the jth terminal of the i-th terminal row currently being checked in the panel cabinet can be successfully identified. The judgment method is to use fuzzy criteria to judge whether the identified cable gland number contains unconventional symbols, Chinese characters, etc., whether it complies with the gland naming rules, etc. If the criteria are met, proceed to step 7 for accurate judgment, otherwise it is necessary to proceed to step 11 for re-photographing and identification.

[0123] Step 7: The main control module compares the actual cable header number with the cable header number in the drawing. For the secondary circuit cable header number corresponding to the jth terminal of the i-th terminal row currently being checked in the panel cabinet to be checked, the identification value after fuzzy judgment in step 2 and step 6 is compared with the query value in the drawing file in step 5. The comparison method uses expert database, decision tree, and other algorithms to complete the consistency test and finally give the judgment result. Go to step 8.

[0124] Step 8: Determine whether the cable head number is consistent with the image recognition. If the credibility index obtained in step 7 is greater than the image recognition consistency criterion threshold, it is considered that the secondary circuit cable head number corresponding to the jth terminal of the i-th terminal row currently being checked is consistent with the image recognition and proceed to step 9, otherwise proceed to step 12.

[0125] Step 9: Feedback the image recognition comparison result to the user through the LCD panel.

[0126] Step 10: Whether the user sets the mode of direct printing when the cover is not clear. If the user sets the mode of direct printing when the cover is not clear, then go to step 12 to directly print the cover that is not clear or has a low credibility index, otherwise go to step 11 to take a photo or scan again. The meaning of the cover being not clear is that the credibility index obtained in step 7 is greater than the set invalid criterion threshold.

[0127] Step 11: Prompt the user to take a photo or scan again through the LCD panel. The purpose of this step is to prompt the user that the cable sleeve corresponding to the jth terminal of the i-th terminal row currently being checked may fail to be recognized due to reasons such as image clarity and recognition procedures. The user can take a photo or scan again according to the prompt, or even directly select manual printing for the sleeve through the LCD display module.

[0128] Step 12: Send the header number with inconsistent image identification to the printing module for printing.

[0129] Corresponding to the label printer for a substation described in the first embodiment of the present invention, the second embodiment of the present invention further provides a control method for the label printer for a substation, comprising the following steps:

[0130] The main control unit receives a voice input print command selected by the user through the LCD panel or buttons;

[0131] The voice recognition module processes the received commands and information and transmits them to the main control unit;

[0132] The main control module determines whether the printed content is voice input content. If it is voice input content, it recognizes the voice input content to be printed. When the recognition is successful, the recognition result is fed back to the user through the LCD panel and the correction confirmation is required. Then the type to be printed is determined according to the voice command; if the recognition fails, the user is required to re-enter the voice through the LCD panel;

[0133] If the printed content is not the voice input content, the main control module determines whether the content to be printed can be identified from the non-voice input content. If it can be identified, the type of the content to be printed is determined according to the voice command. If it cannot be identified, the user is asked to re-enter the content through the LCD display panel.

[0134] The main control module determines whether the type to be printed is successfully identified. If so, the main control module transmits the information to be printed to the printer of the corresponding print type in the printer module; if not, the problem is fed back to the user through the LCD display panel and the user is asked to select the print type.

[0135] For the working principle and process of this embodiment, please refer to the description of the aforementioned embodiment 1 of the present invention, which will not be repeated here.

[0136] Compared with the prior art, the beneficial effect brought by the embodiment of the present invention is that, by configuring a solar power supply module, the dependence on external power supply is reduced, the system can adapt to the complex environment of the substation and save energy and protect the environment, thereby ensuring long-term stable operation. It has built-in multiple standard format label templates and supports localized modification and personalized production, which effectively ensures the standardization, integrity and accuracy of labels and improves the efficiency and quality of operation and maintenance. The voice recognition and wireless connection functions greatly facilitate editing and operation, reduce the workload of manual input, and improve convenience. The image recognition conversion module combines the reading of electronic drawings with on-site identification comparison, which can promptly detect and automatically print wrong label identification, reduce the workload and error rate of manual verification, and effectively ensure the safe operation and accurate management of substation equipment.

[0137] The above disclosure is only the preferred embodiment of the present invention, which certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A label printer for a substation, characterized in that: include: A power module, used to power the label printer; A main control module, electrically connected to the power module, and used to control the operation of the label printer; A liquid crystal display module, electrically connected to the main control module, for displaying the operating status and information of the label printer; The voice recognition module is used for voice input when editing tags. The voice recognition module converts the received user voice signal into a digital signal after filtering and processing, and uses the language model to extract the information into commands and information recognizable by the main control module and transmits it to the main control module; A wireless interface, electrically connected to the main control module, for realizing wireless connection with external devices; A USB interface, electrically connected to the main control module, for realizing a wired connection with an external device; An image recognition conversion module, electrically connected to the main control module, for recognizing image information on substation equipment and converting the recognition result into editable label template data; The printing module is electrically connected to the main control module and is used to print out corresponding labels according to the edited label template data.

2. The label printer for substation according to claim 1, characterized in that: The power module specifically includes: Solar panels to power label printers when there is sufficient sunlight; Energy storage device, used to balance the energy fluctuations caused by printing discontinuity and unstable energy input from solar panels; The electric energy conversion device is used to convert the direct current converted by the external power supply into the direct current required by other modules through a DC-DC conversion circuit.

3. The label printer for substation according to claim 2, characterized in that: The main control module uses a second-order linear anti-disturbance control strategy to control the DC-DC conversion circuit in the electric energy conversion device to keep the output direct current constant.

4. The label printer for substation according to claim 1, characterized in that: The label printer is preset with a pressure plate label template, a secondary circuit label template, a secondary circuit header template, a switch port configuration label template and a fiber channel label template.

5. A control method for a label printer for a substation as claimed in claim 1, characterized in that: The following steps are involved: The main control unit receives a voice input print command selected by the user through the LCD panel or buttons; The voice recognition module processes the received commands and information and transmits them to the main control unit; The main control module determines whether the printed content is voice input content. If it is voice input content, it recognizes the voice input content to be printed. When the recognition is successful, the recognition result is fed back to the user through the LCD panel and the user is required to confirm the correction. After that, the type to be printed is determined according to the voice command; If the recognition fails, the user is asked to re-enter the voice through the LCD panel; If the printed content is not the voice input content, the main control module determines whether the content to be printed can be identified from the non-voice input content. If it can be identified, the type of the content to be printed is determined according to the voice command. If it cannot be identified, the user is asked to re-enter the content through the LCD display panel. The main control module determines whether the type to be printed is successfully identified. If it is successfully identified, the main control module transmits the information to be printed to the printer of the corresponding printing type in the printer module; If the recognition is unsuccessful, the problem is fed back to the user through the LCD panel and the user is asked to select the printing type.

6. The method according to claim 5, characterized in that Before the speech recognition module processes, the sound signal is also pre-processed, specifically: The microphone and its processing circuit are used to filter and digitize the sound signal input by the user to convert it into a digital signal that can be processed by the speech recognition module.

7. The method according to claim 6, characterized in that It also includes command and information extraction steps, specifically: The speech recognition module uses the language model to analyze the digital signal and extract the commands and information that the main control module can recognize for subsequent processing.

8. The method according to any one of claims 5 to 7, characterized in that The method of obtaining the printed content is also included in the step of determining the method of obtaining the printed content, which is specifically: The main control module determines whether the source of the printed content is voice input or other methods by querying key words and phrases and comparing them with preset common sentences, and selects the corresponding printed content acquisition strategy accordingly.

9. The method according to any one of claims 5 to 7, characterized in that It also includes the steps of image recognition, comparison and printing, specifically: The main control module receives the image recognition and comparison command triggered by the user through the LCD panel, and identifies the secondary cabinet image information transmitted by the image conversion module, including the cabinet number, terminal block number and secondary circuit cable sleeve number; Based on the identified information, the main control module searches and compares the sleeve number of the corresponding terminal in the drawing file, performs a consistency check, and gives feedback or executes a printing operation based on the test results.

10. The method according to claim 9, characterized in that The image recognition comparison and printing step also includes the following optimization steps: Before image recognition, users are required to adjust the position of the secondary circuit cable sleeve to ensure recognition accuracy; In the judgment of the set header number, fuzzy criteria are used to check whether the set header number conforms to the naming rules; Adjust the credibility index and judgment threshold during comparison according to actual conditions; For the heads that fail to be recognized or are inconsistent, options of re-photographing, scanning or manual printing are provided to meet different usage needs.

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