License plate automatic mailing equipment and license plate automatic mailing method

Abstract

The embodiments of the present application provide an automated license plate mailing device and method. The automated license plate mailing device can use an identification module and a pairing module to identify the license plate to be mailed and pair the front and rear license plates to obtain a license plate set. The label verification module then compares the labels of the license plate set with the plastic sealing material to obtain the plastic sealing material corresponding to the license plate number of the license plate set. The banding plastic sealing module bands and seals the license plate set. Finally, the mailing label attaching module and the mailing label verification module respectively attach and verify the plastic sealing package obtained by plastic sealing, thereby completing the automated mailing of the license plate. The mailing status recording module can also record the mailing status of the mailed license plate to monitor the mailing process. The automated license plate mailing device and method can not only improve efficiency and reduce labor costs, but also significantly reduce the rate of misoperation.

Description

Technical Field

[0001] The present invention relates to the field of production control automation, and in particular to an automatic license plate mailing device and an automatic license plate mailing method. Background Art

[0002] With the increasing popularity of automobiles, the license plate mailing business has grown rapidly. Currently, the sorting, packaging, and delivery processes for license plate mailing are primarily handled manually. This series of operations for mailing license plates is known in the postal industry as a license plate mailing envelope.

[0003] During the research and use of the existing technology, the inventors of the present invention found that since the existing license plate mailing method mainly relies on manual operation, not only is the error rate high, but the efficiency is also relatively low. Faced with tens of thousands of license plates, this inefficient operation method can no longer meet existing business needs. Moreover, since the traditional license plate mailing method requires a large amount of manpower, the labor cost is also high. Summary of the Invention

[0004] The embodiments of the present invention provide an automatic license plate mailing device and an automatic license plate mailing method, which can improve efficiency and reduce error operation rate and labor cost.

[0005] An embodiment of the present invention provides an automatic license plate mailing device, comprising:

[0006] Mailing conveyor belt, used to convey license plates that need to be mailed;

[0007] a recognition module for recognizing the license plate number of the license plate transmitted to the preset location;

[0008] a pairing module for pairing the license plate transmitted to the front license plate position with the license plate transmitted to the rear license plate position based on the recognition result; if the pairing is successful, the license plate on the front license plate position is used as the front license plate, and the license plate on the rear license plate position is used as the rear license plate to form a license plate set;

[0009] a label verification module, configured to compare the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set;

[0010] a banding and plastic sealing module, configured to use the acquired plastic sealing material to band-seal the license plate set to obtain a plastic sealing package;

[0011] A mailing label attaching module, used for attaching a mailing label to the plastic package;

[0012] A mailing bill verification module is used to verify the mailing bill and, if the verification passes, output a plastic package with the mailing bill attached;

[0013] The mailing status recording module is connected to the identification module, the pairing module, the label verification module, the mailing bill attaching module and the mailing bill verification module respectively, and is used to record the mailing status of the mailing license plate;

[0014] The identification module, matching module, label verification module, strapping module, mailing bill attaching module and mailing bill verification module are arranged around the mailing envelope conveyor belt based on the conveying direction of the mailing envelope conveyor belt.

[0015] Optionally, in some embodiments provided by the embodiments of the present invention, the license plate automatic mailing device may further include a label attaching module, wherein:

[0016] The label attaching module is used to attach the license plate number label on the plastic packaging material, and the label attaching module is connected to the mailing status recording module.

[0017] Optionally, in some embodiments provided by the embodiments of the present invention, the pairing module can also be used to move the license plate located on the front license plate position and move the license plate located on the rear license plate position to the front license plate position when pairing fails.

[0018] Optionally, in some embodiments provided by the embodiments of the present invention, the label verification module can be specifically used to determine whether the license plate number of the license plate group is consistent with the license plate number label on the current plastic packaging material. If they are consistent, the current plastic packaging material is determined to be the plastic packaging material corresponding to the license plate number of the license plate group. If they are inconsistent, a removal notification is generated to remove the license plate group and the current plastic packaging material.

[0019] Optionally, in some embodiments provided by the embodiments of the present invention, the plastic packaging material includes materials such as a base plate, an upper cover with a license plate label attached, a drawstring, and a plastic packaging bag, and the drawstring and plastic packaging module may include a flip unit, a gripping unit, a drawstring unit, and a plastic packaging unit, wherein:

[0020] The flipping unit is used to flip the front license plate in the license plate set;

[0021] The grabbing unit is used to grab the flipped front license plate onto the bottom plate, grab the rear license plate and stack it on the flipped front license plate, and place the upper cover with the license plate number label on the rear license plate;

[0022] The strap unit is used to bundle the base plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label attached, which are stacked in sequence, as a whole, so that the flipped front license plate and the rear license plate are firmly located between the base plate and the upper cover with the license plate number label attached, thereby obtaining a license plate assembly to be plastic-sealed;

[0023] The plastic sealing unit is used to plastic seal the license plate set to be plastic sealed using a plastic sealing bag to obtain a plastic sealing package.

[0024] Optionally, in some embodiments provided by the embodiments of the present invention, the mailing label attaching module can be specifically used to scan the license plate number label on the upper cover of the plastic package, obtain mailing data based on the scanning results, print the mailing label based on the mailing data, and attach the printed mailing label to the plastic package.

[0025] Optionally, in some embodiments provided by the embodiments of the present invention, the envelope status recording module may be specifically used to:

[0026] When it is determined that the license plate identified by the recognition module meets the preset conditions, the current mailing state is recorded as a license plate recognition success state;

[0027] When the pairing module is successfully paired, the current envelope status is recorded as a successful pairing status;

[0028] When the license plate number label is provided to the label attaching module, the current mailing state is recorded as a successful license plate number label printing state;

[0029] When the label verification module determines that the license plate number of the license plate group is consistent with the license plate number label on the current plastic sealing material, the current mailing status is recorded as a label verification passed status;

[0030] When the mailing sheet is provided to the mailing sheet attaching module, the current mailing envelope status is recorded as a mailing sheet printing success status;

[0031] When the mailing bill verification module determines that the verification is passed, the current mailing status is recorded as a successful mailing status. When the mailing bill verification module determines that the verification is not passed, the current mailing status is recorded as a failed mailing status.

[0032] Optionally, in some embodiments provided by the embodiments of the present invention, the recognition module can be specifically used to obtain the color information of the license plate transmitted to a preset position, determine the area to be identified based on the color information and the preset license plate template, perform noise reduction processing on the area to be identified, use a binarization algorithm to perform character segmentation on the denoised area to be identified, use a directional gradient histogram and a classification algorithm to identify the character segmentation results, and obtain the license plate number of the license plate located at the preset position.

[0033] Optionally, in some embodiments provided by the embodiments of the present invention, the license plate automatic mailing device may further include a data import module and a data management module, wherein:

[0034] The data import module is used to import and save mailing data, and the mailing data is used to generate mailing labels;

[0035] The recognition module is specifically configured to recognize the license plate number of the license plate transmitted to the preset location, and when the recognition result is determined to be valid based on the mailing data, provide the recognition result to the pairing unit;

[0036] The data management module is connected to the data import module and the mailing status recording module respectively, and is used to operate the data in the data import module and / or the mailing status recording module according to the data operation request when receiving the data operation request, and output the data operation result.

[0037] Accordingly, an embodiment of the present invention further provides a method for automatically mailing license plates, comprising:

[0038] Grab the license plate that needs to be sealed and put it on the sealing conveyor belt;

[0039] Recognizing the license plate number of the license plate transmitted to the preset location;

[0040] Matching the license plate transmitted to the front license plate position with the license plate transmitted to the rear license plate position based on the recognition result;

[0041] If the pairing is successful, the license plate located at the front license plate position is used as the front license plate, and the license plate located at the rear license plate position is used as the rear license plate to form a license plate set;

[0042] Comparing the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set;

[0043] Using the obtained plastic sealing material to tape and plastic seal the license plate set to obtain a plastic sealing package;

[0044] affixing a mailing label to the plastic package and verifying the mailing label;

[0045] When the inspection is passed, a plastic package with the mailing label attached is output.

[0046] The automated license plate sealing device provided by the embodiments of the present invention utilizes an identification module and a pairing module to identify and pair the license plates to be sealed. The label verification module then compares the labels of the paired license plates (i.e., the license plate set) with the sealing material to obtain the sealing material corresponding to the license plate number of the license plate set. The band sealing module then band-seals the license plate set with the obtained sealing material. Finally, the mailing label attaching module and the mailing label verification module each attach a mailing label and perform a verification check on the sealed package, thereby completing the automated sealing of the license plates. The sealing status recording module also records the sealing status of the sealed license plates to monitor the entire sealing process and ensure smooth sealing. Since the sealing process can be operated autonomously by the device without excessive human intervention, the device is not only more efficient and less labor-intensive than existing technologies, but also reduces the risk of incorrect sealing and omissions caused by human intervention, significantly reducing the rate of misoperation. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 This is a flow chart of the automatic license plate mailing method provided by an embodiment of the present invention;

[0049] Figure 2 This is a schematic structural diagram of the automatic license plate mailing equipment provided by an embodiment of the present invention;

[0050] Figure 3 This is another structural diagram of the automatic license plate mailing equipment provided by an embodiment of the present invention;

[0051] Figure 4 This is a schematic structural diagram of a belt-molding module provided in an embodiment of the present invention;

[0052] Figure 5 This is another structural diagram of the automatic license plate mailing equipment provided by an embodiment of the present invention;

[0053] Figure 6 This is a diagram of the architecture of the automatic license plate mailing equipment provided by an embodiment of the present invention;

[0054] Figure 7 This is a schematic diagram of a data processing scenario in an embodiment of the present invention;

[0055] Figure 8is another flow chart of the automatic license plate mailing method provided by an embodiment of the present invention;

[0056] Figure 9 Schematic diagram of a license plate recognition scenario in an embodiment of the present invention;

[0057] Figure 10 Schematic diagram of the stacking of license plates in an embodiment of the present invention. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of the present invention.

[0059] The embodiments of the present invention provide a method and device for automatically mailing license plates, which are described in detail below.

[0060] This embodiment will be described from the perspective of the automatic license plate mailing equipment.

[0061] A method for automatically mailing license plates comprises: grabbing license plates to be mailed and placing them on a mailing conveyor belt, identifying the license plate numbers of the license plates transmitted to a preset position, pairing the license plates transmitted to the front license plate position and the license plates transmitted to the rear license plate position based on the identification result, if the pairing is successful, using the license plate located at the front license plate position as the front license plate and the license plate located at the rear license plate position as the rear license plate to form a license plate group, comparing the license plate numbers of the license plate group with the license plate number labels on the plastic sealing material to obtain the plastic sealing material corresponding to the license plate numbers of the license plate group, using the obtained plastic sealing material to tape and plastic seal the license plate group to obtain a plastic package, attaching a mailing label to the plastic package, and verifying the mailing label; when the verification passes, outputting the plastic package with the mailing label attached.

[0062] like Figure 1 As shown, the specific process of the license plate automatic mailing method can be as follows:

[0063] S101, grab the license plate to be sealed and put it on the sealing conveyor belt.

[0064] Among them, the license plates that need to be sealed can be placed on the feeding table according to the production batches. In this way, the license plate automatic sealing equipment can grab the license plates that need to be sealed from the feeding table in batches and put them on the sealing conveyor belt for transmission.

[0065] S102, identifying the license plate number of the license plate transmitted to the preset location, and then executing step S103.

[0066] The preset position may be set according to actual application requirements. For the convenience of description, in the embodiment of the present invention, the preset position is referred to as a license plate recognition station.

[0067] There are many recognition methods, for example, first segmenting the license plate area by noise reduction and binarization, then using the Histogram of Oriented Gradient (HOG) and classification algorithm to recognize the character segmentation results, etc. That is, the step of "recognizing the license plate number of the license plate transmitted to the preset location" can be specifically as follows:

[0068] Obtain the color information of the license plate transmitted to the preset position, determine the area to be identified based on the color information and the preset license plate template, perform noise reduction on the area to be identified, use a binarization algorithm to perform character segmentation on the noise-reduced area to be identified, use a directional gradient histogram and a classification algorithm to identify the character segmentation results, and obtain the license plate number of the license plate located at the preset position.

[0069] Optionally, the classification algorithm can be set according to the needs of actual applications. For example, the support vector machine (SVM) algorithm of OpenCV (a cross-platform computer vision and machine learning software library) can be used, etc.

[0070] Among them, SVM is a generalized linear classifier that performs binary classification of data using supervised learning. It uses the hinge loss function to calculate empirical risk and incorporates a regularization term into the solution system to optimize structural risk. It is a classifier with sparsity and robustness. Furthermore, SVM can perform nonlinear classification using kernel methods and is a common kernel learning method.

[0071] S103. Pair the license plate transmitted to the front license plate position and the license plate transmitted to the rear license plate position based on the recognition result. If the pairing is successful, execute step S104. If the pairing fails, the corresponding strategy can be adopted according to the actual needs to handle the license plate that failed to pair. For example, step S105 can be executed.

[0072] The pairing strategy can be set according to the actual application requirements. For example, if the pairing strategy is "same license plate number", step S103 can be specifically as follows:

[0073] Based on the recognition result, determine whether the license plate number of the license plate sent to the front license plate position is consistent with the license plate number of the license plate on the rear license plate position. If they are consistent, it is determined that the license plate sent to the front license plate position and the license plate on the rear license plate position are successfully paired, and step S104 is executed. If they are inconsistent, it is determined that the license plate sent to the front license plate position and the license plate on the rear license plate position have failed to be paired, and step S105 can be executed at this time.

[0074] S104, taking the license plate located at the front license plate position as the front license plate, and taking the license plate located at the rear license plate position as the rear license plate to form a license plate group, and then executing step S106.

[0075] S105. When pairing fails, the license plate at the front license plate position is removed, and the license plate at the rear license plate position is moved to the front license plate position so that the next license plate on the mailing conveyor belt can be moved to the rear license plate position, and the process returns to step S103.

[0076] S106: Compare the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set.

[0077] For example, it can be determined whether the license plate number of the license plate set is consistent with the license plate number label on the current plastic packaging material. If consistent, it is determined that the current plastic packaging material is the plastic packaging material corresponding to the license plate number of the license plate set.

[0078] Optionally, if it is determined that the license plate number of the license plate set is inconsistent with the license plate number label on the current laminating material, a removal notice may be generated to remove the license plate set and the current laminating material.

[0079] Optionally, the license plate number label on the plastic sealing material may be pre-marked, such as pre-printed or affixed, or may be automatically marked by the license plate automatic mailing device during the mailing process, such as by affixing, etc. Optionally, before the step of "comparing the license plate number of the license plate set with the license plate number label on the plastic sealing material", the license plate automatic mailing method may further include:

[0080] Marking the laminate, such as printing and / or attaching a license plate number label.

[0081] The plastic packaging material can be provided according to the needs of actual applications, for example, it can include materials such as a bottom plate, a top cover, a drawstring and a plastic packaging bag, wherein the bottom plate and the top cover are adapted to each other.

[0082] It should be noted that when marking the license plate number label on the plastic packaging material, the label can be marked on all plastic packaging materials or on certain designated plastic packaging materials. For ease of description, in the embodiments of the present invention, the license plate number label will be attached to the upper cover as an example for description.

[0083] S107: Use the obtained plastic packaging material to perform plastic packaging on the license plate set to obtain a plastic packaging package.

[0084] For example, taking the example that the plastic packaging material specifically includes a base plate, an upper cover, a drawstring, and a plastic packaging bag, and a license plate label is attached to the upper cover, step S107 can be specifically as follows:

[0085] The front license plate in the license plate set is flipped over, the flipped front license plate is grabbed onto the bottom plate, the rear license plate is grabbed and stacked on the flipped front license plate, and the upper cover with the license plate number label is placed on the rear license plate; the bottom plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label stacked in sequence are bundled as a whole, so that the flipped front license plate and the rear license plate are firmly located between the bottom plate and the upper cover with the license plate number label, to obtain a license plate set to be plastic-sealed; the license plate set to be plastic-sealed is plastic-sealed with a plastic-sealing bag to obtain a plastic-sealed package.

[0086] S108, attaching a mailing label to the plastic package. For example, taking the example of a license plate number label attached to the upper cover, the step of "attaching a mailing label to the plastic package" can be specifically as follows:

[0087] Scan the license plate number label on the upper cover of the plastic package, then obtain the mailing data according to the scanning result, print the mailing label according to the mailing data, and attach the printed mailing label to the plastic package.

[0088] Among them, the mailing data may include the license plate information that needs to be mailed, the recipient information, the sender information, and the mailing order number, etc. Among them, the license plate information that needs to be mailed may include the license plate number, the nature of the license plate and / or the location of the license plate, etc., the recipient information may include the recipient's name, address and contact information, etc., and the sender information may include the sender's name, address and contact information, etc.

[0089] S109: Verify the mailing label. If the verification is passed, output the plastic package with the mailing label attached.

[0090] Optionally, if the inspection fails, a prompt message indicating that the mailing bill inspection fails can be generated so that relevant personnel can handle it in a timely manner.

[0091] Optionally, in order to facilitate timely acquisition of the current license plate sealing status and ensure smooth sealing, the entire process of sealing the license plate can also be monitored. That is, the automatic license plate sealing method can also include: recording the sealing status of the license plate during the sealing process. For example, the specific steps can be as follows:

[0092] When it is determined that the recognized license plate is valid (for example, it meets the preset conditions), the current mail envelope status is recorded as the license plate recognition success status; when the front and rear license plates are successfully paired, the current mail envelope status is recorded as the pairing success status; when the license plate number label is successfully printed, the current mail envelope status is recorded as the license plate number label printing success status; when it is determined that the license plate number of the license plate group is consistent with the license plate number label on the current plastic sealing material, the current mail envelope status is recorded as the label verification passed status; when the mailing label is successfully printed, the current mail envelope status is recorded as the mailing label printing success status; when the mailing label verification is passed, the current mail envelope status is recorded as the mailing success status; when the mailing label verification step fails, the current mail envelope status is recorded as the mailing failure status, and so on.

[0093] Optional, in order to facilitate the control of mail envelopes and the management of mail envelope related data,

[0094] Before step S101, the license plate automatic mailing method may further include:

[0095] Import and save mailing data, wherein the mailing data can be used to generate a mailing label.

[0096] And, when a data operation request is received, the relevant data of the envelope is operated according to the data operation request, and the data operation result is output.

[0097] Among them, the data operation request may include data query / modification request, mailing statistics request, mailing number management request, and production data management request, etc., among which production data refers to data related to production, such as the setting parameters and algorithms of the license plate automatic mailing equipment, and relevant data of the mailing materials involved in the mailing process, etc.

[0098] From the above, it can be seen that since the embodiment of the present invention can perform a series of automated sealing operations on the license plate that needs to be sealed, such as license plate number recognition, front and rear license plate pairing, strapping and plastic sealing, mailing label attachment and verification, and sealing status monitoring, therefore, compared with the existing technology that requires a lot of manual participation, it can not only greatly improve the operating efficiency and reduce labor costs, but also reduce the situation of wrong sealing and omission caused by human operation, thereby greatly reducing the error operation rate.

[0099] Accordingly, in order to better implement the above license plate automatic mailing method, the embodiment of the present invention also provides a license plate automatic mailing device, see Figure 2 The automatic license plate mailing equipment may include a mailing conveyor belt 001, an identification module 002, a pairing module 003, a label verification module 004, a strapping module 005, a mailing label attaching module 006, and a mailing label verification module 007. The functions and connections of each module are as follows:

[0100] Mailing conveyor belt 001 is used to convey license plates that need to be mailed.

[0101] The recognition module 002 is used to recognize the license plate number of the license plate transmitted to the preset location.

[0102] The pairing module 003 is used to pair the license plate transmitted to the front license plate position and the license plate transmitted to the rear license plate position based on the recognition result. If the pairing is successful, the license plate located at the front license plate position is used as the front license plate, and the license plate located at the rear license plate position is used as the rear license plate to form a license plate group.

[0103] The label verification module 004 is used to compare the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set.

[0104] The banding and plastic sealing module 005 is used to use the obtained plastic sealing material to band-seal the license plate set to obtain a plastic sealing package.

[0105] The mailing label attaching module 006 is used to attach the mailing label to the plastic package.

[0106] The mailing bill verification module 007 is used to verify the mailing bill and, when the verification passes, output the plastic package with the mailing bill attached.

[0107] Among them, the identification module 002, the matching module 003, the label verification module 004, the strapping module 005, the mailing label attaching module 006, and the mailing label verification module 007 are arranged around the mailing conveyor belt 001 based on the conveying direction of the mailing conveyor belt 001.

[0108] Optionally, the mailing bill verification module 007 can also be used to generate a prompt message indicating that the mailing bill has failed the inspection when the inspection fails, so that relevant personnel can handle it in a timely manner.

[0109] Optionally, the mail conveyor belt 001 may include multiple sections of conveyor belts according to actual application requirements. For example, it may include a first conveyor belt and a second conveyor belt, wherein the first conveyor belt may be used for conveyance before license plate pairing, and the second conveyor belt may be used for conveyance after license plate pairing, and so on.

[0110] Optionally, the recognition module 002 may use a variety of recognition methods when recognizing the license plate number, for example, the specific methods may be as follows:

[0111] The recognition module 002 can be specifically used to obtain the color information of the license plate transmitted to the preset position, determine the area to be recognized based on the color information and the preset license plate template, perform noise reduction processing on the area to be recognized, use a binarization algorithm to perform character segmentation on the noise-reduced area to be recognized, use a directional gradient histogram and a classification algorithm to recognize the character segmentation results, and obtain the license plate number of the license plate located at the preset position.

[0112] Optionally, the classification algorithm may be configured according to actual application requirements. For example, SVM may be used. For details, please refer to the description of the previous embodiment, which will not be elaborated here.

[0113] Optionally, in order to obtain the current status of the license plate in a timely manner to ensure the smooth progress of the mailing, the entire process of mailing the license plate can also be monitored, such as Figure 2 As shown, the license plate automatic mailing device may further include a mailing status recording module 008, which is specifically as follows:

[0114] The mailing status recording module 008 is respectively connected to the identification module 002, the matching module 003, the label verification module 004, the mailing bill attaching module 006 and the mailing bill verification module 007, and is used to record the mailing status of the mailing license plate.

[0115] For example, the mailing envelope status recording module 008 can be specifically used to record the current mailing envelope status as a successful license plate recognition status when it is determined that the license plate identified by the identification module 002 meets the preset conditions; record the current mailing envelope status as a successful pairing status when the pairing module 003 successfully pairs; record the current mailing envelope status as a label verification passed status when the label verification module 004 determines that the license plate number of the license plate group is consistent with the license plate number label on the current plastic sealing material; record the current mailing envelope status as a successful mailing envelope printing status when the mailing envelope verification module 007 determines that the verification step is passed, and record the current mailing envelope status as a failed mailing envelope status when the mailing envelope verification module 007 determines that the verification step is failed.

[0116] Optionally, the license plate number label on the plastic sealing material can be pre-marked, such as pre-printed or attached, or can be marked automatically by the license plate automatic mailing equipment during the mailing process, such as attached, etc., which is optional. Figure 3 As shown, the license plate automatic mailing device can also include a label attaching module 009, which is as follows:

[0117] The label attaching module 009 is used to mark on the plastic packaging material, such as printing and / or attaching a license plate number label.

[0118] The label attaching module 009 can also be arranged around the envelope conveyor belt 001, for example, Figure 3 As shown, the identification module 002, the pairing module 003, the label attaching module 009, the label verification module 004, the strapping module 005, the mailing label attaching module 006, and the mailing label verification module 007 can be arranged around the mailing conveyor belt 001 based on the conveying direction of the mailing conveyor belt 001.

[0119] In order to obtain the license plate number label attachment status and the current mailing status in a timely manner, the mailing status recording module 008 can also record the execution status of the label attaching module 009. That is, the label attaching module 009 can be connected to the mailing status recording module 008. In this way, the label attaching module 009 can promptly feed back the license plate number label attachment status to the mailing status recording module 008 for recording. The details are as follows:

[0120] The mailing state recording module 008 can also be used to record the current mailing state as a state of successful printing of the license plate number label when the license plate number label is provided to the label attaching module 009 .

[0121] Optionally, when the pairing module 003 pairs the license plate transmitted to the front license plate position with the license plate transmitted to the rear license plate position based on the recognition result, the pairing strategy adopted can be set according to the actual application requirements. For example, if the pairing strategy is "same license plate number", then:

[0122] The pairing module 003 can be specifically used to determine whether the license plate number of the license plate sent to the front license plate position and the license plate number of the license plate on the rear license plate position are consistent based on the recognition result. If they are consistent, it is determined that the license plate sent to the front license plate position and the license plate on the rear license plate position are successfully paired. If they are inconsistent, it is determined that the license plate sent to the front license plate position and the license plate on the rear license plate position have failed to pair.

[0123] Optionally, when pairing fails, corresponding strategies can be adopted to handle the license plate that failed to pair according to actual needs, such as moving the two license plates that failed to pair out of the current position, such as moving them out of the mail conveyor belt 008 or the pairing station, and then continuing to process subsequent license plates; or, any one of the two license plates that failed to pair can be moved out of the current position, such as moving them out of the mail conveyor belt 008 or the pairing station, and then continuing to process subsequent license plates; or, the license plate at a specified position of the two license plates that failed to pair, such as the license plate at the front license plate position or the license plate at the rear license plate position, can be moved out of the current position, and then continue to process subsequent license plates, and so on.

[0124] For the convenience of description, in the embodiments of the present invention, the example of removing the license plate at the front license plate position is used for description, that is:

[0125] The pairing module 003 can also be used to remove the license plate located at the front license plate position and move the license plate located at the rear license plate position to the front license plate position when the pairing fails.

[0126] Optionally, the strategy adopted by the label verification module 004 when comparing the license plate number of the license plate group with the license plate number label on the plastic packaging material can also be set according to the actual application requirements. For example, the strategy can be "the license plate number of the license plate group is the same as the license plate number label on the current plastic packaging material". In other words, the label verification module 004 can be specifically used to:

[0127] Determine whether the license plate number of the license plate group is consistent with the license plate number label on the current plastic packaging material. If they are consistent, determine that the current plastic packaging material is the plastic packaging material corresponding to the license plate number of the license plate group. If they are inconsistent, generate a removal notice to remove the license plate group and the current plastic packaging material.

[0128] Optionally, the plastic packaging material can be provided according to the actual application requirements, for example, it can include materials such as a base plate, an upper cover, a drawstring and a plastic packaging bag, wherein the base plate and the upper cover are compatible. Optionally, a license plate number label can be pre-attached to the upper cover. If a license plate number label is not pre-attached to the upper cover, the mailing label attaching module 009 can attach the license plate number label to the upper cover to complete the marking of the plastic packaging material, that is:

[0129] Mailing label attaching module 009, specifically for attaching the license plate number label on the upper cover;

[0130] The label verification module 004 can be specifically used to compare the license plate number of the license plate group with the license plate number label on the upper cover to obtain the upper cover corresponding to the license plate number of the license plate group; for example, it can be determined whether the license plate number of the license plate group is consistent with the license plate number label on the upper cover. If they are consistent, the upper cover is determined to be the upper cover corresponding to the license plate number of the license plate group. If they are inconsistent, a removal notification is generated to remove the license plate group and the current upper cover, and so on.

[0131] Optional, such as Figure 4 As shown, the strapping and molding module 005 may include a flipping unit 0051, a grabbing unit 0052, a strapping unit 0053 and a molding unit 0054, wherein:

[0132] The flipping unit 0051 is used to flip the front license plate in the license plate group; for example, when the pairing module 003 determines that the license plate transmitted to the front license plate position and the license plate on the rear license plate position are successfully paired, the front license plate in the license plate group (i.e., the license plate located on the front license plate position) is flipped.

[0133] The grabbing unit 0052 is used to grab the flipped front license plate onto the bottom plate, grab the rear license plate and stack it on the flipped front license plate, and place the upper cover with the license plate number label on the rear license plate.

[0134] The strap unit 0053 is used to bundle the base plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label as a whole, so that the flipped front license plate and the rear license plate are firmly located between the base plate and the upper cover with the license plate number label, and a license plate group to be plastic-sealed is obtained.

[0135] The plastic sealing unit 0054 is used to plastic seal the license plate set to be plastic sealed using a plastic sealing bag to obtain a plastic sealing package.

[0136] At this time, the mailing label attaching module 006 can be used to attach the mailing label to the plastic package output by the plastic packaging unit 0054. For example, the specific steps can be as follows:

[0137] The mailing label attaching module 006 can be specifically used to scan the license plate number label on the upper cover of the plastic package, obtain the mailing data according to the scanning result, print the mailing label according to the mailing data, and attach the printed mailing label to the plastic package.

[0138] Optionally, in order to facilitate the control of the mail envelope and the management of the relevant data of the mail envelope, such as Figure 5 As shown, the license plate automatic mailing device may further include a data import module 010 and a data management module 011, wherein:

[0139] The data import module 010 is used to import and save mailing data, which is used to generate mailing labels.

[0140] The recognition module 002 may be specifically configured to recognize the license plate number of the license plate transmitted to the preset location, and when the recognition result is determined to be valid based on the mailing data, the recognition result is provided to the pairing unit 003;

[0141] The data management module 011 is connected to the data import module 010 and the mailing status recording module 008 respectively, and is used to operate the data in the data import module 010 and / or the mailing status recording module 008 according to the data operation request when receiving the data operation request, and output the data operation result.

[0142] Among them, the data operation request may include data query / modification request, mailing statistics request, mailing number management request, and production data management request, etc., among which production data refers to data related to production, such as the setting parameters and algorithms of the license plate automatic mailing equipment, and relevant data of the mailing materials involved in the mailing process, etc.

[0143] For example, the data management module 011 can be specifically used to query / modify the data in the data import module 010 and / or the envelope status recording module 008 according to the data query / modification request when receiving the data query / modification request, and output the data query / modification result.

[0144] For another example, the data management module 011 may be configured to, upon receiving an envelope statistics request, perform statistics on the envelope data in the envelope status recording module 008 according to the envelope statistics request and output statistical results, such as statistical reports.

[0145] For another example, the data management module 011 may be specifically configured to operate on the mailing data according to the mailing number management request when receiving the mailing number management request, and generate the operation result.

[0146] For another example, the data management module 011 may be configured to, upon receiving a production data management request, operate on the production data according to the production data management request, and generate the operation result, etc.

[0147] Optionally, the automatic license plate mailing equipment may also include an initialization module, which is respectively connected to the identification module 002, the pairing module 003, the label verification module 004, the strap plastic sealing module 005, the mailing bill attachment module 006, the mailing bill verification module 007, the mailing status recording module 008, and the label attachment module 009, etc., for initializing each module in the automatic license plate mailing equipment.

[0148] As can be seen from the above, the automatic license plate mailing equipment provided by the embodiment of the present invention can use the recognition module 002 and the pairing module 003 to respectively identify the license plate to be mailed and pair the front and rear license plates. Then, the label verification module 004 compares the labels of the paired front and rear license plates (i.e., the license plate group) with the plastic sealing material to obtain the plastic sealing material corresponding to the license plate number of the license plate group. The banding and plastic sealing module 005 uses the obtained plastic sealing material to band-seal the license plate group. Finally, the mailing label attaching module 006 and the mailing label verification module 007 respectively attach the mailing label and verify the plastic sealing package obtained by plastic sealing, thereby completing the automatic mailing of the license plate. Among them, the mailing status recording module 008 can also record the mailing status of the mailed license plate to monitor the entire process of mailing the license plate to ensure the smooth progress of the mailing. Since the mailing process can be operated by the equipment itself without excessive human intervention, compared with existing technologies, it is not only more efficient and has lower labor costs, but also can reduce the occurrence of wrong sealing and omissions due to human operation, greatly reducing the error rate.

[0149] It should be noted that, in specific implementation, each module and unit in the license plate automatic mailing device can be implemented by using independent entities, or can be combined or divided according to actual application requirements and implemented by the same entity or several entities.

[0150] For example, see Figure 6 A programmable logic controller (PLC) can be used to connect various pneumatic, electric components and sensors to realize the control of the underlying motion. For example, PLC1 can be connected to various pneumatic, electric components and sensors to realize the distribution operation of the license plate (such as grabbing the license plate to be mailed from the feeding table to the mailing conveyor 001), the conveying operation of the first conveyor belt in the mailing conveyor 001, the license plate grabbing operation of the pairing module 003, the license plate removal (i.e., kicking the license plate) operation, and the belt laminating module 005. The flipping operation of the flipping unit 0051 in the mail conveyor belt 001, etc.; PLC2 is connected to various pneumatic, electric components and sensors to realize the conveying operation of the second conveyor belt in the mail conveyor belt 001, the grabbing action of the grabbing unit 0052 in the strapping and laminating module 005, the distribution operation of the bottom plate (such as grabbing the bottom plate from the material platform to the mail conveyor belt 001), the distribution operation of the upper cover (such as grabbing the upper cover from the material platform to the mail conveyor belt 001), the bundling operation of the strapping unit 0053, and the laminating operation of the laminating unit 0054, etc.

[0151] For example, see Figure 6 , upper-level production can also be achieved through industrial cameras, thermal paper printers, label labeling machines, barcode guns, and / or code scanning and verification equipment, such as the license plate recognition function of the recognition module 002, the license plate group pairing (i.e., front and rear license plate pairing) function of the pairing module 003, the license plate number label printing and attachment operation of the signature and attachment module 009, the license plate number label verification function of the label verification module 004, the label printing and attachment operation of the mailing bill attachment module 006, and the mailing bill verification function of the mailing bill verification module 007.

[0152] For example, Figure 6 As shown, a relational database management system (MySQL) database can also be used to implement background data services, such as the envelope status recording operation of the envelope status recording module 008, the mailing data import function of the data import module 010, the production data management, data query / modification, mailing order number management, envelope result feedback, and envelope data statistics functions of the data management module 011.

[0153] For example, if the background data service is implemented using MySQL, see Figure 7Specifically, mailing data can be obtained from the postal system's postal database and imported into the MySQL database of the license plate automated mailing device. This data can then be accessed at any time during the mailing process. Furthermore, if the mailing status changes, the various upper-level production modules can promptly update the mailing status in MySQL. Furthermore, MySQL can also upload mailing results to the postal system to update the mailing data in the postal database. Similarly, MySQL can also import other data, such as production data, and provide various data query, modification, and report output services, which will not be discussed in detail here.

[0154] In order to describe the license plate automatic mailing equipment more clearly, the following will be Figure 6 Taking the architecture as an example, the license plate automatic mailing equipment and its execution process are further described in detail.

[0155] like Figure 8 As shown, the execution process of the license plate automatic mailing equipment can be specifically as follows:

[0156] S201: The initialization module performs initialization operations on each module in the automatic license plate mailing device.

[0157] For example, if a <Reset> button is set on the console page of a PLC (such as PLC1 and PLC2), then at this time, you can click the <Reset> button to reset the device hardware and connect to the data service, check the status of each workstation in the license plate automatic mailing equipment, and initialize peripherals such as cameras, barcode guns and printers.

[0158] After the initialization operation is completed, an initialization completion prompt message may be generated so that the user can proceed to the next operation.

[0159] S202. After the initialization is completed, the license plates to be mailed are placed one by one on the first conveyor belt of the mailing conveyor belt 001 according to the production batch for transmission.

[0160] For example, if a <Start> button is provided on the console page of a PLC (such as PLC1 and PLC2), a batch of license plates to be mailed can be placed on the feed table in advance. When the automatic license plate mailing equipment is initialized, such as when an initialization completion prompt is received, the <Start> button can be clicked to trigger the license plate mailing process. Once the license plate mailing process is triggered, under the control of PLC1, the gripper will place the license plates to be mailed one by one on the first conveyor belt of mailing conveyor belt 001 according to the production batch, and convey them. Each time a license plate is placed, the first conveyor belt moves one grid.

[0161] Optionally, in order to reduce the rate of misoperation and improve the accuracy of encapsulation, when placing the license plate on the first conveyor belt, double-sheet detection can also be performed, that is, to detect whether the placed license plate is a single sheet. If it is a single sheet, step S203 is executed. Otherwise, if it is not a single sheet, such as a double sheet or more than a double sheet, the extra license plates need to be removed from the first conveyor belt to ensure that the license plate placed on the first conveyor belt is a single sheet. Then, step S203 is executed again.

[0162] S203. When the first conveyor belt conveys the single license plate to the license plate recognition station, the recognition module 002 recognizes the license plate number of the license plate at this license plate recognition station. For example, see Figure 9 , and its recognition process can be specifically as follows:

[0163] A. The recognition module 002 collects images of the license plate conveyed to the license plate recognition station through an industrial camera and trims the collected images.

[0164] For example, as Figure 9 shown, taking the license plate "E X 123AB" conveyed to the license plate recognition station as an example, at this time, the recognition module 002 can collect images of "E X 123AB" through an industrial camera, trim the collected images, and then execute step B.

[0165] B. The recognition module 002 obtains the color information of the license plate in the trimmed image and determines the area to be recognized according to this color information and the preset license plate template.

[0166] Among them, the license plate template can be set according to the actual application requirements and imported into the license plate automatic mailing device in advance through the data import module 010.

[0167] For example, specific license plate templates can be set according to the first Chinese character of the license plate combined with different license plate background colors. For example, if the first Chinese character of the license plate is "E" and the license plate background color is blue, then the corresponding license plate template is 11; if the first Chinese character of the license plate is "E" and the license plate background color is green, then the corresponding license plate template is 12; if the first Chinese character of the license plate is "J" and the license plate background color is blue, then the corresponding license plate template is 21; if the first Chinese character of the license plate is "E" and the license plate background color is green, then the corresponding license plate template is 22, and so on.

[0168] That is to say, taking this example, when the color information of the license plate obtained by the recognition module 002 is blue and the first Chinese character is "E", the recognition module 002 can obtain the license plate template 11, and then perform regional recognition on the cropped image according to the license plate template 11 to determine the area to be recognized; when the color information of the license plate obtained by the recognition module 002 is green and the first Chinese character is "E", the recognition module 002 can obtain the license plate template 12, and then perform regional recognition on the cropped image according to the license plate template 12 to determine the area to be recognized; when the color information of the license plate obtained by the recognition module 002 is blue and the first Chinese character is "J", the recognition module 002 can obtain the license plate template 21, and then perform regional recognition on the cropped image according to the license plate template 21 to determine the area to be recognized, and so on.

[0169] It should be noted that Figure 9 Only taking the example that the first Chinese character is "E" and the background color is blue (not marked in the figure) for illustration, other examples are similar and will not be elaborated here.

[0170] C. The recognition module 002 performs noise reduction processing on the area to be recognized, and uses a binarization algorithm to process the area to be recognized after noise reduction to obtain a binarization result.

[0171] D. The recognition module 002 performs character segmentation on the area to be recognized according to the binarization result to determine valid character pictures, and obtains a character segmentation result.

[0172] For example, as Figure 9 shown, the recognition module 002 can perform character segmentation on the area to be recognized according to the binarization result, and obtain the areas where the characters "X", "1", "2", "3", "A", and "B" are located.

[0173] E. The recognition module 002 uses the HOG (Histogram of Oriented Gradients) and SVM algorithms to recognize the character segmentation result, and obtains the license plate number of the license plate at this license plate recognition station.

[0174] For example, referring to Figure 9 , the recognition module 002 uses the HOG and SVM algorithms to recognize the areas where the characters "X", "1", "2", "3", "A", and "B" are located respectively, and obtains the characters "X", "1", "2", "3", "A", and "B". Therefore, combined with the first Chinese character "E" recognized in step B, it can be determined that the license plate number of the license plate at this license plate recognition station is "E X 123AB".

[0175] S204: After the recognition module 002 recognizes the license plate number, it determines whether the recognition result is valid based on the mailing data. If it is valid, the recognition result is provided to the pairing unit 003. Otherwise, if it is invalid, the license plate at the license plate recognition station can be removed from the first conveyor belt and the process returns to step S203 to recognize the next license plate number. For example, the specific steps can be as follows:

[0176] After the recognition module 002 recognizes the license plate number, it saves the license plate number in queue 1 and queries the license plate number through the data management module 011. If it is determined that the license plate number exists in the license plate information to be mailed in the mailing data, the license plate number is determined to be valid, and the first conveyor belt moves one grid so that the license plate can be conveyed toward the matching station, and then step S205 is executed; otherwise, if it is determined that the license plate number does not exist in the license plate information to be mailed, the license plate number is determined to be invalid, the license plate at the license plate recognition station can be moved out of the first conveyor belt, and the corresponding license plate number in the data queue 1 is cleared, and the process returns to step S203 to perform license plate number recognition on the next license plate.

[0177] Optionally, when it is determined that the license plate number is valid, the mailing state recording module 008 may also be notified so that the mailing state recording module 008 records the current mailing state as a successful license plate recognition state; when it is determined that the license plate number is invalid, the mailing state recording module 008 may also be notified so that the mailing state recording module 008 records the current mailing state as a license plate recognition error (ERROR) state.

[0178] S205. After the first conveyor belt conveys the license plate to the pairing station (the pairing station includes the front license plate position and the rear license plate position), the pairing module 003 pairs the license plate conveyed to the front license plate position with the license plate conveyed to the rear license plate position based on the recognition result. If the pairing is successful, the license plate on the front license plate position is used as the front license plate, and the license plate on the rear license plate position is used as the rear license plate to form a license plate group, and then step S206 is executed; if the pairing is unsuccessful, the license plate on the front license plate position is removed, and the license plate on the rear license plate position is moved to the front license plate position.

[0179] For example, the pairing module 003 can determine whether the license plate numbers of the license plate on the front license plate position and the license plate on the rear license plate position are consistent based on the license plate numbers saved in queue 1. If they are consistent, it means that the pairing is successful. At this time, the license plate on the front license plate position can be used as the front license plate, and the license plate on the rear license plate position can be used as the rear license plate to form a license plate group, and then step S206 is executed; otherwise, if it is determined that the license plate numbers of the license plate on the front license plate position and the license plate on the rear license plate position are inconsistent, it means that the pairing fails. At this time, the license plate on the front license plate position can be moved out, and the license plate on the rear license plate position can be moved to the front license plate position, so that the next license plate can be transmitted to the rear license plate position for further pairing.

[0180] Optionally, when the front and rear license plates are successfully paired, the mailing state recording module 008 may also be notified so that the mailing state recording module 008 records the current mailing state as a successful pairing state.

[0181] S206, the flipping unit 0051 flips the front license plate in the license plate group, and the rear license plate remains unchanged (not flipped), and then the flipped front license plate and the rear license plate continue to be transmitted.

[0182] S207, the grabbing unit 0052 grabs the bottom plate from the material platform to the second conveyor belt, grabs the flipped front license plate from the first conveyor belt to the bottom plate, and grabs the rear license plate and stacks it on the flipped front license plate to obtain a merged license plate group.

[0183] Optionally, in order to prevent the license plate from being bumped during mailing, the bottom plate can be made of a material with a cushioning effect, such as a foam board or cardboard.

[0184] S208. When the second conveyor belt conveys the merged license plate group to the license plate group recognition station, it notifies the recognition module 002 to perform license plate recognition. The recognition module 002 recognizes the license plate number of the merged license plate group on the license plate group recognition station. The specific recognition process is the same as step S203. Please refer to the description of the previous embodiment for details and will not be repeated here.

[0185] S209: After the recognition module 002 recognizes the license plate number of the merged license plate group, it determines whether the recognition result is valid based on the mailing data. If it is valid, step S210 is executed. Otherwise, if it is invalid, the merged license plate group can be removed from the second conveyor belt and the process returns to step S208 to perform license plate number recognition on the next merged license plate group. For example, the specific process can be as follows:

[0186] After the recognition module 002 recognizes the license plate number of the merged license plate group, it saves the license plate number in queue 2 and queries the license plate number through the data management module 011. If it is determined that the license plate number exists in the license plate information that needs to be mailed in the mailing data, the license plate number is determined to be valid and step S210 is executed; otherwise, if it is determined that the license plate number does not exist in the license plate information that needs to be mailed, the license plate number is determined to be invalid, the merged license plate group can be moved out of the second conveyor belt, and the corresponding license plate number in the data queue 2 is cleared, and the process returns to step S208 to perform license plate number recognition on the next merged license plate group.

[0187] S210, instructing the thermal printer to print the license plate number label of the merged license plate group, and then executing step S211.

[0188] Optionally, at this time, the mailing state recording module 008 may also be notified so that the mailing state recording module 008 records the current mailing state as a state in which the license plate number label is printed successfully.

[0189] S211. The label attaching module 009 attaches the printed license plate number label to the upper cover, wherein the upper cover is conveyed on the upper cover channel.

[0190] Optionally, in order to prevent the license plate from being bumped during the mailing process, the upper cover can be made of a material with a cushioning effect such as foam board or cardboard.

[0191] S212, the label verification module 004 compares the license plate number of the merged license plate group with the license plate number label attached to the upper cover to obtain the corresponding upper cover (the upper cover with the license plate number label attached), and superimposes the obtained upper cover on the merged license plate group, for example, the superimposition method can be as follows Figure 10 shown.

[0192] For example, the label verification module 004 can use a barcode gun to scan the license plate number label on the upper cover, and then compare the scanned license plate number with the license plate number of the merged license plate group in queue 2. If the license plate numbers are consistent, the upper cover with the license plate number label is grabbed and stacked on the merged license plate group (that is, the base plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label are stacked in sequence), and then step S213 is executed; if the license plate numbers are inconsistent, a removal notice can be generated to remove the merged license plate group and the upper cover.

[0193] S213. When the second conveyor belt conveys the bottom plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label that are stacked in sequence to the strapping station, the strapping unit 0053 bundles the bottom plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label that are stacked in sequence as a whole, so that the flipped front license plate and the rear license plate are firmly located between the bottom plate and the upper cover with the license plate number label, and the license plate group to be plastic-sealed is obtained, and then step S214 is executed.

[0194] For example, the bottom plate, the flipped front license plate, the rear license plate and the upper cover with the license plate number label stacked in sequence can be taken as a whole, and then the two ends of the whole can be tied with a strap to obtain the license plate set to be plastic-sealed.

[0195] S214. When the second conveyor belt conveys the license plate group to be laminated to the laminating station, the laminating unit 0054 uses a plastic sealing bag, such as a transparent plastic sealing bag, to laminate the license plate group to obtain a plastic sealing package.

[0196] S215. The second conveyor belt conveys the plastic package to the mailing label printing station, and the mailing label attaching module 006 scans the license plate number label on the upper cover of the plastic package, obtains the mailing data, such as the recipient's name, address, and mailing order number, based on the scanning result, and then notifies the thermal printer to print the mailing label based on the mailing data.

[0197] Optionally, at this time, the envelope status recording module 008 may also be notified so that the envelope status recording module 008 records the current envelope status as a mailing label printing success status.

[0198] S216, the mailing bill attaching module 006 attaches the printed mailing bill to the plastic package, and the mailing bill verification module 007 verifies the mailing bill. When the verification passes, the plastic package with the mailing bill attached is output.

[0199] For example, when the second conveyor belt transports the mailing label to the mailing label verification station, the mailing label verification module 007 uses a barcode gun to scan the mailing number on the mailing label, and then compares the scan result with the saved mailing data. If they are consistent, it is determined that the inspection has passed, and the plastic package with the mailing label is placed on the receiving platform through a gripper; otherwise, if they are inconsistent, it is determined that the inspection has failed, and the plastic package with the mailing label is placed in a recycling box through a gripper.

[0200] Optionally, in order to improve accuracy and reduce the error rate, the mailing bill verification module 007 can also re-check the license plate number label. For example, in addition to using a barcode gun to scan the mailing number on the mailing bill, the barcode gun can also be used to scan the license plate number label (the plastic bag part corresponding to the license plate number label position is transparent, so the license plate number label on the upper cover can be scanned directly). Then, the two scan results are compared with the saved mailing data. If they are consistent, it is determined that the verification is passed. Otherwise, if they are inconsistent, it is determined that the verification fails.

[0201] Optionally, when determining that the verification has passed, the mailing bill verification module 007 can also notify the envelope status recording module 008 so that the envelope status recording module 008 records the current envelope status as a successful envelope status; similarly, when determining that the verification has failed, the mailing bill verification module 007 can also notify the envelope status recording module 008 so that the envelope status recording module 008 records the current envelope status as a failed envelope status.

[0202] From the above, it can be seen that since the license plate automatic sealing equipment provided by the embodiment of the present invention can perform a series of automated sealing operations on the license plate that needs to be sealed, such as license plate number recognition, front and rear license plate pairing, strap plastic sealing, mailing label attachment and verification, compared with the existing technology that requires a lot of manual participation, it can not only greatly improve the operating efficiency, reduce the error rate and labor cost, but also, since the sealing status can be monitored and recorded in real time during the sealing process, and multiple verifications can be performed, it can further reduce the situation of wrong sealing and omission, and greatly improve the accuracy of packaging.

[0203] The above is a detailed introduction to the license plate automatic mailing equipment and license plate automatic mailing method provided in the embodiments of the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, based on the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A license plate automatic mailing device, characterized in that: include: Mailing conveyor belt, used to convey license plates that need to be mailed; a recognition module for recognizing the license plate number of the license plate transmitted to the preset location; The pairing module is used to pair the license plate transmitted to the front license plate position with the license plate transmitted to the rear license plate position based on the recognition result. If the pairing is successful, the license plate located at the front license plate position is used as the front license plate, and the license plate located at the rear license plate position is used as the rear license plate to form a license plate group. The pairing module is also used to, when the pairing fails, move the two license plates that failed to pair out of the current position; or, move any one of the two license plates that failed to pair out of the current position; or, move the license plate at a designated position of the two license plates that failed to pair out of the current position; a label verification module, configured to compare the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set; a banding and plastic sealing module, configured to use the acquired plastic sealing material to band-seal the license plate set to obtain a plastic sealing package; A mailing label attaching module, used for attaching a mailing label to the plastic package; A mailing bill verification module is used to verify the mailing bill and, if the verification is passed, output a plastic package with the mailing bill attached; The mailing status recording module is connected to the identification module, the pairing module, the label verification module, the mailing bill attaching module and the mailing bill verification module respectively, and is used to record the mailing status of the mailing license plate; The identification module, the pairing module, the label verification module, the strapping and laminating module, the mailing sheet attaching module and the mailing sheet verification module are arranged around the mailing sheet conveyor belt based on the conveying direction of the mailing sheet conveyor belt; The label verification module is specifically configured to determine whether the license plate number of the license plate set is consistent with the license plate number label on the current plastic packaging material; if they are consistent, determining that the current plastic packaging material is the plastic packaging material corresponding to the license plate number of the license plate set; if they are inconsistent, generating a removal notice to remove the license plate set and the current plastic packaging material; The plastic packaging material includes a bottom plate, an upper cover with a license plate label attached, a strap and a plastic packaging bag, and the strap plastic packaging module includes a turning unit, a grabbing unit, a strap unit and a plastic packaging unit; The flipping unit is used to flip the front license plate in the license plate set; The grabbing unit is used to grab the flipped front license plate onto the bottom plate, grab the rear license plate and stack it on the flipped front license plate, and place the upper cover with the license plate number label on the rear license plate; The strap unit is used to bundle the stacked bottom plate, the flipped front license plate, the rear license plate, and the upper cover with the license plate number label as a whole, so that the flipped front license plate and the rear license plate are firmly located between the bottom plate and the upper cover with the license plate number label, thereby obtaining a license plate set to be plastic-sealed; The plastic sealing unit is used to plastic seal the license plate set to be plastic sealed using a plastic sealing bag to obtain a plastic sealing package.

2. The automatic license plate mailing equipment according to claim 1 is characterized in that: The license plate automatic mailing equipment also includes a label attaching module; The label attaching module is used to attach the license plate number label on the plastic packaging material, and the label attaching module is connected to the mailing status recording module.

3. The automatic license plate mailing equipment according to claim 1, characterized in that: When the two license plates that failed to pair are moved out of the current position, the license plate located at the front license plate position is moved out, and the license plate located at the rear license plate position is moved to the front license plate position.

4. The automatic license plate mailing equipment according to claim 1, characterized in that: The mailing label attaching module is specifically used to scan the license plate number label on the upper cover of the plastic package, obtain mailing data according to the scanning result, print the mailing label according to the mailing data, and attach the printed mailing label to the plastic package.

5. The automatic license plate mailing equipment according to claim 2 or 3, characterized in that: The mailing status recording module is specifically used to: When it is determined that the license plate identified by the recognition module meets the preset conditions, the current mailing state is recorded as a license plate recognition success state; When the pairing module is successfully paired, the current envelope status is recorded as a successful pairing status; When the license plate number label is provided to the label attaching module, the current mailing state is recorded as a successful license plate number label printing state; When the label verification module determines that the license plate number of the license plate group is consistent with the license plate number label on the current plastic sealing material, the current mailing status is recorded as a label verification passed status; When the mailing sheet is provided to the mailing sheet attaching module, the current mailing envelope status is recorded as a mailing sheet printing success status; When the mailing bill verification module determines that the verification is passed, the current mailing status is recorded as a mailing success status. When the mailing bill verification module determines that the verification is not passed, the current mailing status is recorded as a mailing failure status.

6. The automatic license plate mailing equipment according to any one of claims 1 to 4, characterized in that: The recognition module is specifically used to obtain the color information of the license plate transmitted to the preset position, determine the area to be recognized based on the color information and the preset license plate template, perform noise reduction processing on the area to be recognized, use a binarization algorithm to perform character segmentation on the noise-reduced area to be recognized, use a directional gradient histogram and a classification algorithm to identify the character segmentation results, and obtain the license plate number of the license plate located at the preset position.

7. The automatic license plate mailing equipment according to any one of claims 1 to 4, characterized in that: The license plate automatic mailing device also includes a data import module and a data management module; The data import module is used to import and save mailing data, and the mailing data is used to generate mailing labels; The recognition module is specifically configured to recognize the license plate number of the license plate transmitted to the preset location, and when the recognition result is determined to be valid based on the mailing data, provide the recognition result to the pairing module; The data management module is connected to the data import module and the mailing status recording module respectively, and is used to operate the data in the data import module and / or the mailing status recording module according to the data operation request when receiving the data operation request, and output the data operation result.

8. A method for automatically mailing license plates, characterized in that: Using the license plate automatic mailing device according to any one of claims 1 to 7, the license plate automatic mailing method comprises: Grab the license plate that needs to be sealed and put it on the sealing conveyor belt; Recognizing the license plate number of the license plate transmitted to the preset location; Matching the license plate transmitted to the front license plate position with the license plate transmitted to the rear license plate position based on the recognition result; If the pairing is successful, the license plate at the front license plate position is used as the front license plate, and the license plate at the rear license plate position is used as the rear license plate to form a license plate group; if the pairing fails, the two license plates that failed to pair are moved out of the current position; or, any one of the two license plates that failed to pair is moved out of the current position; or, the license plate at a specified position of the two license plates that failed to pair is moved out of the current position; Comparing the license plate number of the license plate set with the license plate number label on the plastic packaging material to obtain the plastic packaging material corresponding to the license plate number of the license plate set; Using the obtained plastic sealing material to tape and plastic seal the license plate set to obtain a plastic sealing package; affixing a mailing label to the plastic package and verifying the mailing label; When the verification is passed, a plastic package with the mailing label attached is output.

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