A label printer for a substation and a control method thereof

Abstract

The application discloses a label printer for a transformer substation and a control method thereof, wherein 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 conversion module and a printing module. The solar power supply module is configured, dependence on external power supply is reduced, the complex environment of the transformer substation is adapted to, and energy saving and environmental protection are achieved. A plurality of standard format label templates are built-in and support local modification and personalized production, the label standardization, integrity and accuracy are effectively ensured, and the operation and maintenance work efficiency and quality are improved. The voice recognition and wireless connection functions greatly facilitate editing and operation, reduce manual input workload and improve convenience. The image recognition conversion module is combined with reading of electronic drawings and on-site identification comparison, can timely find and automatically print error label identification, reduces manual checking workload and error rate, and effectively guarantees the operation safety and management accuracy of the transformer substation equipment.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of substation equipment, and particularly relates to a label printer for a substation and a control method thereof. BACKGROUND

[0002] As a key hub of the power system, a substation is equipped with a large number of secondary equipment cabinets, including protection screens, measurement and control screens, switcher screens, intelligent terminal screens and control cabinets. Various secondary labels need to be pasted on these cabinets, including pressing plate labels, air switch labels, secondary circuit sleeve labels, switcher port labels and optical fiber labels, to identify the equipment model and its function. The integrity and accuracy of such labels are of great significance for the normal operation, abnormal condition analysis and operation of the equipment, and are also the key points that need to be strictly controlled in the field acceptance process.

[0003] However, there are many defects in the production of current substation secondary labels. Firstly, the labels of different sites or even different cabinets of the same site are significantly different. Specifically, the label size, font size and format, and label language are inconsistent, which not only destroys the overall aesthetics, but also causes adverse effects on the accurate identification of the running site, increases the risk of misjudgment, and is not conducive to the quick and accurate positioning and operation of the related equipment by the maintenance personnel.

[0004] Secondly, in the field of infrastructure projects and technical improvement projects, a large number of secondary labels need to be printed. Due to the lack of unified format and standard specification, the labels have to be repeatedly modified in the acceptance process. This process seriously affects the work efficiency, and a large number of repeated printing operations cause unnecessary consumption of materials, waste of human and material resources, increase of project cost and time cost, and reduction of the overall benefit of substation construction and transformation.

[0005] Thirdly, the existing portable or handheld label machine has obvious defects. Most of such label machines need to be connected to the internal power supply of the substation when in use, and the input editing function is not convenient and efficient, which greatly restricts the progress speed of the field work and reduces the work efficiency. Some label machines even need to use a notebook computer for editing operation, which has a high dependence on external equipment. In the complex field environment of the substation, such operation method is very inconvenient, limits the flexibility and timeliness of label production, and is difficult to meet the demand of rapid label production in the field.

[0006] Fourthly, in view of the large number of secondary circuits in the substation site, the secondary circuit sleeve printed on site often does not correspond to the design drawing. The workload of manually checking the consistency of the site identification and the drawing is extremely large, and a large amount of manpower and time cost is consumed. Once it is found that the label or cable sleeve is wrong, it cannot be immediately printed and replaced. The on-site staff needs to record all the label or sleeve information that needs to be changed in detail first, then print it centrally and uniformly, and then replace it one by one according to the record. This cumbersome process makes the work efficiency extremely low, seriously affecting the efficient development of the operation and management of the substation, and in the equipment fault repair or emergency maintenance, the label replacement may be delayed, which may delay the processing time and pose a potential threat to the safe and stable operation of the power system. SUMMARY

[0007] The technical problem to be solved by the present application 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 correction of incorrect labels.

[0008] To solve the above technical problems, the present application provides a label printer for a substation, comprising:

[0009] A power module for powering the label printer;

[0010] A main control module electrically connected to the power module for controlling the operation of the label printer;

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

[0012] A voice recognition module for voice input when editing labels, and the voice recognition module converts the received user sound signals into digital signals after filtering and processing, and uses a language model to extract information into commands and information recognizable by the main control module and transmits them 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 wired connection with external devices;

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

[0016] A printing module electrically connected to the main control module for printing corresponding labels according to the edited label template data.

[0017] Preferably, the power module specifically comprises:

[0018] a solar panel for powering the label printer when there is sufficient light;

[0019] a power storage device for balancing energy fluctuations due to printing discontinuity and instability of solar panel input energy;

[0020] a power conversion device for converting direct current converted by an external power source into direct current required by other modules through a DC-DC conversion loop.

[0021] Preferably, the master control module controls the DC-DC conversion loop in the power conversion device using a second-order linear active disturbance rejection control strategy to keep the output direct current constant.

[0022] Preferably, the label printer is pre-provided with a pressure plate label template, a secondary loop label template, a secondary loop sleeve template, a switch port configuration label template, and a fiber channel label template.

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

[0024] The master control unit receives a voice input print command selected by a user through a liquid crystal screen panel or a button;

[0025] The voice recognition module transmits the processed command and information to the master control unit;

[0026] The master control module determines whether the print content is voice input content, and if it is voice input content, it identifies the voice input print content, and when the identification is successful, it feeds back the identification result to the user through the liquid crystal display panel and requires correction and confirmation, and then determines the print type according to the voice instruction; if the identification fails, the user is required to re-input the voice through the liquid crystal display panel;

[0027] If the print content is not voice input content, the master control module determines whether the print content can be identified from non-voice input content, and if it can be identified, the print type is determined according to the voice instruction, and if it cannot be identified, the user is required to re-input the voice through the liquid crystal display panel;

[0028] The master control module determines whether the print type is successfully identified, and if it is successfully identified, the master control module transmits the print information to the printer of the corresponding print type in the printer module; if it is not successfully identified, the problem is fed back to the user through the liquid crystal display panel, and the user is required to select the print type.

[0029] Preferably, before the voice recognition module processes, a sound signal preprocessing step is further included, which is specifically:

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

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

[0032] The voice recognition module uses a language model to analyze the digital signal and extract commands and information that can be recognized by the main control module for subsequent processing.

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

[0034] The main control module determines whether the print content is input by voice or other means by querying key phrases and comparing them with pre-set common phrases, and selects the corresponding print content acquisition strategy accordingly.

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

[0036] The main control module receives the graph recognition and comparison command triggered by the user through the liquid crystal screen panel, and identifies the secondary screen cabinet image information transmitted by the image conversion module, including screen cabinet number, terminal row number, and secondary circuit cable sleeve number.

[0037] The main control module queries and compares the sleeve number of the corresponding terminal in the drawing file based on the identified information, performs consistency verification, and gives feedback or executes the printing operation according to the verification result.

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

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

[0040] Fuzzy criteria are used in the sleeve number judgment to check whether the sleeve number meets the naming rules;

[0041] Adjust the reliability index and criterion threshold during comparison according to actual conditions;

[0042] For the recognized or inconsistent sleeve, provide options for re-shooting, scanning, or manual printing to meet different user needs.

[0043] The present application has the following advantages: by configuring a solar power module, dependence on external power supply is reduced, the complex environment of a substation is adapted to, energy saving and environmental protection are achieved, and long-term stable operation is ensured. A plurality of standard format label templates are built-in and support local modification and personalized production, effectively ensuring label standardization, integrity and accuracy, and improving operation efficiency and quality. Voice recognition and wireless connection functions greatly facilitate editing and operation, reduce manual input workload, and improve convenience. The image recognition conversion module combines reading of electronic drawings and on-site identification comparison, can timely find and automatically print error labels, reduces manual checking workload and error rate, and effectively ensures substation equipment operation safety and management accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0044] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

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

[0046] Figure 2 is a structural block diagram of a power module according to an embodiment of the present application.

[0047] Figure 3 is a circuit schematic diagram of the power module according to an embodiment of the present application.

[0048] Figure 4 is a control information transmission schematic diagram between the power module and the main control module according to an embodiment of the present application.

[0049] Figure 5 is a voltage stabilization control strategy block diagram of the power module according to an embodiment of the present application.

[0050] Figure 6 is a flowchart of the intelligent printing function realized by voice input according to an embodiment of the present application.

[0051] Figure 7 is a flowchart of printing realized by manual input using a liquid crystal display according to an embodiment of the present application.

[0052] Figure 8 is a flowchart of printing of a second cable head with errors after image recognition comparison according to an embodiment of the present application. DETAILED DESCRIPTION

[0053] The following description of the embodiments with reference to the drawings is used to illustrate specific embodiments in which the application can be implemented. In the description of the application, it should be understood that the terms "longitudinal", "length", "circumferential", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the application.

[0054] Please refer to Figure 1 The substation label printer provided by the embodiment of the application comprises:

[0055] A power module is configured to supply power to the label printer.

[0056] A main control module is electrically connected to the power module and configured to control the operation of the label printer.

[0057] A liquid crystal display module is electrically connected to the main control module and configured to display the operation state and information of the label printer.

[0058] A voice recognition module is configured to input voice when editing a label. The voice recognition module converts the received user voice signal into a digital signal after filtering and processing, and uses a language model to extract information into a command recognizable by the main control module and transmits the information to the main control module.

[0059] A wireless interface is electrically connected to the main control module and configured to realize wireless connection with an external device.

[0060] A USB interface is electrically connected to the main control module and configured to realize wired connection with an external device.

[0061] An image recognition conversion module is electrically connected to the main control module and configured to recognize image information on a substation device and convert the recognition result into editable label template data.

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

[0063] Through the above configuration, it is known that the embodiment of the present application realizes an efficient and convenient label making mode by integrating the power module, the main control module, the liquid crystal display module, the wireless interface, the USB interface, the image recognition conversion module and the printing module. The solar power supply system of the power module ensures the self-sufficiency of the equipment in the absence of external power supply, thereby enhancing 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, thereby greatly improving the accuracy and efficiency of label making. The printing module quickly prints the corresponding label according to the edited label template data, thereby ensuring the consistency and professionalism of the label. The overall design simplifies the label making process, reduces human errors and improves the efficiency and safety of the substation operation and maintenance work.

[0064] Specifically, please refer to the drawings Figure 2 In the embodiment of the present application, 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, and is suitable for charging at night without external power supply. The power module can not only supply energy to the energy storage device through the external power supply, but also supply energy to the energy storage device by using the solar panel under sufficient light conditions. The external power supply interface can convert the external power supply (such as alternating current or direct current in the substation) into a certain value of direct current in the power module, that is, the voltages of the external power supply interface, the energy storage device and the solar panel DC side should be consistent. The electric energy conversion device converts the direct current with a value of UDC1 into another direct current with a value of UDC2 required by other modules through a DC-DC conversion circuit, and also has a current stabilizing circuit and a filtering circuit to supply energy to the printer other modules (main control module and printing module).

[0065] Figure 3 The circuit schematic diagram for the power module in the embodiment of the present application to use external AC power supply to supply energy.

[0066] The solar panel and its rectifier circuit correspond to the solar panel in Figure 2 The external AC voltage and its rectifier circuit correspond to the external power supply and its interface in Figure 2 The DC-DC circuit, the current stabilizing circuit and the filtering circuit correspond to the electric energy conversion device in Figure 2

[0067] ​The control of the power module is realized by a power control module in the main control module, and the controlled objects are two direct current voltages UDC1 and UDC2 of the power module. The voltage signals of the two direct current voltages UDC1 and UDC2 of the power module are converted into digital signals by a sampling unit such as a sensor or a transmitter, and are transmitted to a control unit in the power control module. The control unit outputs trigger pulses to the DCDC circuit in the power conversion device and the DCDC circuit in the energy storage device respectively to realize the control effect through the calculation of a control strategy. Figure 4 Fig. 3 is a diagram of the control information transmission between the power module and the main control module, wherein the solid arrow represents the energy transmission path, and the dashed arrow represents the information transmission path.

[0068] The load of the label printer used in the substation site is unstable due to the discontinuity of printing. In addition, the energy input by the solar panel is also unstable because the printer may be moved during use. Therefore, an energy storage device is needed to balance the energy to keep the direct current voltage UDC1 constant. In order to keep the output direct current voltage UDC2 constant, the DCDC circuit in the power conversion device needs to be controlled. A control example of the control unit of the power control module in the main control module is given below. Figure 5 As shown in Fig. 6, the power module voltage stabilization control strategy based on active disturbance rejection control is adopted in the embodiment of the present application.

[0069] In the formula, 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 by the sampling unit, and u represents the control amount calculated by the control unit and used for output to the pulse output unit. Figure 5 The controlled object in the power module is attached to Figure 4 The sampling unit, the pulse output unit, the energy storage device or the power conversion device and the signal loop represented by the dashed line in Fig. 6 are realized 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 the mathematical model thereof is as follows:

[0071]

[0072] In the formula, the intermediate variables z1, z2 and z3 represent the observation values of the three state variables, i.e. 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; β1, β2 and β3 are to-be-tuned parameters; and b is a compensation coefficient, which are all to be tuned according to the actual parameters of the actual controlled converter station.

[0073] The main control module is used for processing drawing information input through a USB interface, text information and instruction information input through a wireless interface, text information and instruction information input by a liquid crystal module, on-site label information input by an image recognition module, instruction information input by a device button, and outputting printing information to a printing module, display information to a liquid crystal display module, and display information to a wireless interface. The main control SOC is composed of a general ARM processor and a peripheral storage circuit, and is used as a platform for operating system and business program running. The external USB interface and wireless interface are used as external communication interfaces of the system. The wireless interface also has a Bluetooth communication function. The liquid crystal display interface includes a liquid crystal display screen and a touch screen. The liquid crystal display screen is used for operating system and business program interface display, and the touch screen is similar to a keyboard and mouse operation, and can complete mouse clicking and cooperate with a screen soft keyboard to complete text output operation. The structure of the image conversion recognition module mainly includes a camera convenient to move, which is connected with the device through a long data transmission line and is used for shooting actual secondary screen cabinet information to compare with drawing files. The shot image is transmitted to the main control module through a data bus. The shooting of the on-site screen cabinet can also be realized by a user's mobile phone, and the image information of the on-site device can also be transmitted to the main control module through a corresponding USB interface.

[0074] The label printer is customized according to relevant standards to make commonly used label templates of a substation, such as a press plate label, an air switch label, a secondary circuit label, a switch port configuration label, an optical fiber channel label and the like, and the label templates are regularly updated; meanwhile, a user can make local modification or individual template production according to the label templates.

[0075] The label printer in the embodiment of the application also has a voice recognition function, and can input voice during editing of a label. The flow of realizing the intelligent printing function by using voice input is as shown in the figure, and includes the following steps: Figure 6

[0076] Step 1: triggering voice input printing

[0077] A user selects voice input or button starting voice input printing command through a liquid crystal screen panel, and the main control module receives the command and starts the voice input printing flow after receiving the command.

[0078] Step 2: voice information processing and transmission

[0079] The voice recognition module processes the received command and information. It converts the sound signal input by a user into a digital signal through a microphone and its processing circuit after filtering and processing, and then extracts the information into a command and information recognizable by the main control module by using a language model, and transmits the command and information to the main control module.

[0080] Step 3: judging printing content acquisition mode ​

[0081] The host module determines whether the print content is a voice input content. There are two cases:

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

[0083] If the print content is the content that the user requires the host module to print the corresponding content in the drawing file received through the USB / wireless / Bluetooth module (Method 2), go to step 4. The host module determines by querying the key sentences in the voice input command and comparing them with the pre-set common sentences.

[0084] Step 4: Determine the print content (non-voice input case)

[0085] When it is determined that the print content is the content in the drawing file input through the USB / wireless / Bluetooth interface, the host module analyzes the input voice instruction or information and determines by querying the key sentences and comparing them with the pre-set common sentences.

[0086] Step 5: Identify the query print method

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

[0088] Step 6: Retrieve the print content

[0089] The host module retrieves the print content in the drawing file according to the received voice instruction. The specific process includes:

[0090] Determine the source of the drawing file according to the voice input instruction (may be the file input through the USB / wireless / Bluetooth interface);

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

[0092] Determine the specific location of the print content according to the voice input instruction and identify the print content. If the retrieval is completed within a set time, go to step 7; otherwise, go to step 11.

[0093] Step 7: Determine whether the print content is successfully identified

[0094] Determine whether the print content is successfully identified. If the print content is successfully identified within a set time, go to step 8; otherwise, go to step 11.

[0095] Step 8: Determine the print type

[0096] The host module determines the type to be printed according to the voice instruction. Since different types of printing (such as a pressure plate label, a secondary loop label, a secondary loop sleeve, etc.) require different templates, printing paper or sleeves, that is, different printers to implement the corresponding printing process, the type of printing needs to be determined separately. If the type to be printed is determined within a set time, step 9 is entered; otherwise, step 15 is entered.

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

[0098] Determine whether the type to be printed is successfully recognized. If the type to be printed is successfully recognized within a set time, step 10 is entered; otherwise, step 15 is entered.

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

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

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

[0102] When the host module cannot successfully recognize the content to be printed or the method to be printed during processing, the problem is fed back to the user through the liquid crystal display panel, and the user is required to re-input the voice.

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

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

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

[0106] Determine whether the content to be printed is successfully recognized. If the content to be printed is successfully recognized within a set time, step 14 is entered; otherwise, step 11 is entered.

[0107] Step 14: Feedback the recognition result and confirm

[0108] The recognition result is fed back to the user through the liquid crystal display panel, and the user is required to correct and confirm. Since there is a certain error rate in voice recognition results, after the user confirms, step 8 is entered.

[0109] Step 15: Manually select the type of printing

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

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

[0112] Step 1: The main control module receives the manual input print mode command selected by the user through the liquid crystal screen panel or button;

[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 to-be-printed information to the printer corresponding to the print type in the printer module.

[0116] The image recognition comparison function of the embodiment of the application is mainly completed by the main control module and the image recognition conversion module, specifically for comparing the secondary loop terminal row number of the secondary screen cabinet, the secondary cable loop number and the drawing file, and reprinting the wrong secondary cable loop number. The flow is as shown in Figure 8 , including the following steps:

[0117] Step 1: The main control module receives the command of the user selecting the image recognition comparison through the liquid crystal screen panel. When the user uses the image recognition comparison printing function, the user needs to select the corresponding instruction on the liquid crystal screen panel to trigger the program of the main control module.

[0118] Step 2: The main control module receives the secondary screen cabinet image information obtained by the user through the image conversion module and performs recognition. The user needs to use the lens in the configured image recognition conversion module to take a picture of the secondary screen cabinet to be checked, including the number of the screen cabinet, the terminal row number behind the screen cabinet, the sleeve head number of each secondary loop cable and other information. Note that before scanning, the user needs to rotate the secondary loop cable sleeve head in the to-be-scanned screen cabinet to face the screen cabinet door, and straighten the secondary cable as much as possible to be perpendicular to the terminal row, so as to ensure correct conversion of the image recognition conversion module. The substation terminal row and secondary loop cable sleeve head recognition method adopted by the main control module can be realized by using existing sliding window detection, target detection method and other computer vision technologies. Through this step, the main control module will identify and extract the secondary screen cabinet number, secondary screen cabinet terminal row number, secondary loop cable sleeve head number and its corresponding terminal row number and other information in the pictures of the secondary screen cabinet, secondary screen cabinet terminal row and secondary loop cable sleeve head.

[0119] Step 3: Determine whether the screen cabinet number is successfully identified. Determine whether the screen cabinet number of the screen cabinet to be checked can be successfully identified in the information identified in step 2. The determination method is to query whether the identified screen cabinet number is contained in the drawing file obtained through each interface. If yes, go to step 4; otherwise, go to step 11.

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

[0121] Step 5: The master module queries the j-th terminal correct sleeve number in the drawing file using the identified screen cabinet number and terminal block number. Because there are many secondary cables to be checked in the screen cabinet to be checked, and there are many secondary circuits and terminal blocks to be checked, it is necessary to check the sleeve number of the secondary circuit cable in order from top to bottom according to the order of the drawing file. The purpose of step 5 is to query whether the i-th terminal block j-th terminal of the current program needs to be checked by the known correct drawing information. If the cable is found, i.e., the cable sleeve number is queried, go to step 6; if there is no cable connected at the terminal, i.e., the cable sleeve number is queried as empty, go to the next terminal check.

[0122] Step 6: Determine whether the actual sleeve number is successfully identified. Determine whether the secondary circuit cable sleeve number corresponding to the i-th terminal block j-th terminal to be checked in the screen cabinet identified in step 2 can be successfully identified. The determination method is to use fuzzy criteria to determine whether the identified cable sleeve number contains irregular symbols, Chinese characters, etc., whether it meets the sleeve naming rules, etc. If the criteria are met, go to step 7 for accurate judgment; otherwise, go to step 11 to re-identify by photographing.

[0123] Step 7: The master module compares the actual sleeve number with the sleeve number in the drawing. For the secondary circuit cable sleeve number corresponding to the i-th terminal block j-th terminal to be checked in the screen cabinet, compare the identification value after step 2 identification and step 6 fuzzy judgment with the query value in the drawing file after step 5. The comparison method uses expert library, decision tree, etc. algorithm to complete consistency verification, and finally gives the determination result. Go to step 8.

[0124] Step 8: Determine whether the sleeve number is consistent with the drawing. For the case where the reliability index obtained in step 7 is greater than the threshold value of the drawing identification consistency criterion, it is considered that the secondary circuit cable sleeve number corresponding to the i-th terminal block j-th terminal to be checked is consistent with the drawing, and goes to step 9; otherwise, go to step 12.

[0125] Step 9: The result of the figure recognition is fed back to the user through the liquid crystal panel.

[0126] Step 10: Whether the user sets the sleeve unclear direct printing mode. If the user sets the sleeve unclear direct printing mode, go to step 12 to directly print the sleeve with unclear or low reliability index, otherwise go to step 11 to re-photograph or scan. The meaning of the sleeve unclear is that the reliability index obtained in step 7 is greater than the set invalid criterion threshold.

[0127] Step 11: The user is prompted to re-photograph or scan through the liquid crystal panel. The meaning of this step is to prompt the user that the cable sleeve corresponding to the i-th terminal and the j-th terminal of the current verification may fail to be recognized due to reasons such as picture clarity and recognition program. The user can re-photograph or scan according to the prompt, or even directly print the sleeve manually through the liquid crystal display module.

[0128] Step 12: The sleeve number with inconsistent figure recognition is sent to the printing module to realize printing.

[0129] Corresponding to the label printer for transformer substations described in Embodiment One of the present application, Embodiment Two of the present application further provides a control method of a label printer for transformer substations, comprising the following steps:

[0130] The main control unit receives the voice input printing command selected by the user through the liquid crystal screen panel or the button;

[0131] The voice recognition module transmits the processed command and information to the main control unit;

[0132] The main control module determines whether the printing content is voice input content. If it is voice input content, the voice input content to be printed is recognized. When the recognition is successful, the recognition result is fed back to the user through the liquid crystal display panel and the user is required to correct and confirm. Then the type of the content to be printed is determined according to the voice instruction. If the recognition fails, the user is required to re-voice input through the liquid crystal display panel;

[0133] If the printing content is not voice input content, the main control module determines whether the content to be printed can be recognized from the non-voice input content. If it can be recognized, the type of the content to be printed is determined according to the voice instruction. If it cannot be recognized, the user is required to re-voice input through the liquid crystal display panel;

[0134] The main control module determines whether the type of the content to be printed is successfully recognized. If it is successfully recognized, the main control module transmits the information of the content to be printed to the printer of the corresponding type in the printer module. If it is not successfully recognized, the problem is fed back to the user through the liquid crystal display panel, and the user is required to select the type of the content to be printed.

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

[0136] Compared with the prior art, the embodiment of the present application has the beneficial effects that by configuring a solar power supply module, the dependence on external power supply is reduced, the complex environment of the substation is adapted, energy saving and environmental protection are achieved, and long-time stable operation is ensured. Multiple standard format label templates are built-in and support local modification and personalized production, effectively ensuring the standardization, integrity and accuracy of the label, and improving the work 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 and on-site identification comparison, can timely find and automatically print error labels, reduce the workload and error rate of manual checking, and effectively ensure the safe operation of substation equipment and the accuracy of management.

[0137] The above only discloses the preferred embodiments of the present application, and of course cannot limit the scope of the right of the present application, so the equivalent changes made according to the claims of the present application still belong to the scope covered by the present application.

Claims

1. A control method of a label printer for a substation, characterized by, The method comprises the following steps: The host module receives the voice input print command selected by the user through the liquid crystal screen panel or the button; The voice recognition module transmits the received command and information to the host module after processing; The host module determines whether the print content is voice input content. If it is voice input content, the host module identifies the voice input print content. When the identification is successful, the host module feeds back the identification result to the user through the liquid crystal display panel and requires the user to correct and confirm. Then, the host module determines the print type according to the voice instruction; If the identification fails, the host module requires the user to re-input the voice; If the print content is not voice input content, the host module determines whether the print content can be identified from non-voice input content. If it can be identified, the host module determines the print type according to the voice instruction. If it cannot be identified, the host module requires the user to re-input the voice through the liquid crystal display panel; The host module determines whether the print type is successfully identified. If the print type is successfully identified, the host module transmits the print information to the printer corresponding to the print type in the printer module. If the print type is not successfully identified, the host module feeds back the problem to the user through the liquid crystal display panel and requires the user to select the print type; The method further comprises a judgment step of print content acquisition mode, specifically: The host module determines whether the print content is voice input or other mode by comparing the key words and the preset common sentences, and selects the corresponding print content acquisition strategy accordingly; The method further comprises a graph recognition and comparison print step, specifically: The host module receives the graph recognition and comparison command triggered by the user through the liquid crystal screen panel, and identifies the secondary screen cabinet image information transmitted by the image recognition conversion module, including the screen cabinet number, the terminal row number and the secondary circuit cable sleeve number; The host module queries and compares the sleeve number of the corresponding terminal in the drawing file according to the identified information, performs consistency test, and gives feedback or executes the print operation according to the test result; The graph recognition and comparison print step further comprises the following optimization steps: Before image recognition, the user is required to adjust the position of the secondary circuit cable sleeve to ensure the accuracy of recognition; In the sleeve number judgment, fuzzy criteria are used to check whether the sleeve number meets the naming rules; The confidence index and criterion threshold are adjusted according to the actual situation during comparison; For the sleeve with failed recognition or inconsistency, options such as re-photographing, scanning or manual printing are provided to meet different user needs.

2. The method of claim 1, wherein, Before the voice recognition module processes, the method further comprises a pre-processing step of sound signal, specifically: The sound signal input by the user is filtered and digitized by the microphone and its processing circuit, so as to be converted into digital signals that can be processed by the voice recognition module.

3. The method of claim 2, wherein, The method further comprises a command and information extraction step, specifically: The voice recognition module uses a language model to analyze the digital signals and extracts commands and information that can be recognized by the host module for subsequent processing.

4. A label printer for a substation using the method according to any one of claims 1 to 3, characterized in that The method comprises: A power module for supplying power to the label printer; A host module electrically connected to the power module for controlling the operation of the label printer; A liquid crystal display module electrically connected to the host module for displaying the operation state and information of the label printer; A voice recognition module is used for voice input when editing the label, and the voice recognition module converts the received user sound signal into a digital signal after filtering and processing, and uses a language model to extract information into a command recognizable by the main control module and transmits the information to the main control module; A wireless interface is electrically connected with the main control module, and is used for realizing wireless connection with an external device; A USB interface is electrically connected with the main control module, and is used for realizing wired connection with an external device; An image recognition conversion module is electrically connected with the main control module, and is used for recognizing image information on a substation device, and converting the recognition result into editable label template data; A printing module is electrically connected with the main control module, and is used for printing corresponding labels according to the edited label template data.

5. The label printer for a transformer substation according to claim 4, characterized by The power module specifically includes: A solar panel is used for supplying power for the label printer when the light is sufficient; An energy storage device is used for balancing energy fluctuation caused by printing discontinuity and unstable input energy of the solar panel; An electric energy conversion device is used for converting direct current generated by an external power supply into direct current required by other modules through a DC-DC conversion loop.

6. The label printer for a transformer substation according to claim 5, characterized in that, The main control module uses a second-order linear active disturbance rejection control strategy to control the DC-DC conversion loop in the electric energy conversion device, so as to keep the output direct current constant.

7. The label printer for a transformer substation according to claim 4, characterized by The label printer is pre-set with a pressure plate label template, a secondary loop label template, a secondary loop sleeve template, a switch port configuration label template and a fiber channel label template.

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