RFID-based truck loading and unloading weighing process monitoring method and system

Abstract

The invention provides a truck loading and unloading weighing process monitoring method and system based on RFID, and the method comprises the steps: enabling an RFID read-write device of each working place to be connected with a PC terminal, writing the license plate information of a truck into an RFID card on the truck, and achieving the binding of the RFID card with the truck; a control terminal integrated with a main control chip and a touch display screen is placed in each working place (a loading wharf, a weight house and a storage yard), and the control terminals are connected with corresponding RFID read-write devices; according to the method, loading, unloading and weighing process steps of a truck are coded, read-write control is performed on an RFID read-write device through a main control chip, received RFID card information is identified, if a process code in the RFID card information read by the RFID read-write device meets a set requirement, the RFID read-write device is used for assigning a next process code to an RFID card on the truck, and otherwise, an abnormal alarm is given. According to the invention, loading, gross weight weighing, unloading, tare weight weighing and then returning to loading of the truck can be ensured, periodic operation is carried out, and truck weighing loopholes caused by human errors are avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of logistics vehicle monitoring, and in particular to a method and system for monitoring a truck loading, unloading and weighing process based on RFID. Background Art

[0002] With the rapid development of logistics and transportation industries, cargo loading and unloading, cargo weight measurement and management are becoming more and more critical links in business operations. Traditional truck loading and unloading and weighing management methods rely heavily on manual operations, without process control measures. It is easy for trucks to unload without weighing after loading, or to load without weighing after unloading. When multiple trucks and multiple locations are operating at the same time, trucks are prone to running to the wrong loading / unloading address, human errors occur, and vehicle loading and unloading plans are confused, resulting in chaotic processes and abnormal cargo weight measurement. In addition, manual records and supervision are also difficult to achieve real-time monitoring and cannot respond to abnormal situations in a timely manner. Therefore, there is an urgent need for an efficient and intelligent system to improve the automation level of truck loading and unloading and weighing.

[0003] The rapid development of radio frequency identification (RFID) technology has provided a new idea for solving this problem. RFID technology uses non-contact communication through radio waves to realize automatic identification of objects, and has the advantages of high reading efficiency, high identification accuracy, and wide application range. Applying RFID to the loading and unloading and weighing management of trucks can realize accurate identification and real-time tracking of vehicles and goods, thereby optimizing logistics processes, improving work efficiency and reducing operational risks.

[0004] At present, there are some RFID-based logistics management systems, but most of them focus on a certain link, such as weighing or unloading management. There is no application management that effectively covers the entire process of truck loading, weighing and unloading. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a method and system for monitoring the loading, unloading and weighing process of trucks based on RFID, so as to realize the full tracking and control of each link of loading, unloading and weighing of trucks, improve the efficiency of loading, unloading and weighing, ensure that trucks are loaded / unloaded according to the predetermined process steps and predetermined places, and ensure the accuracy of truck weight measurement.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is: A method for monitoring the process of loading and unloading and weighing a truck based on RFID, comprising the steps of: S1. Set a separate RFID card on each truck and bind them one by one. Connect the RFID reader / writer of each workplace to the PC. Use the RFID reader / writer on the PC to write the truck license plate information into the corresponding RFID card to obtain the RFID card information. S2. A control terminal with an integrated main control chip and a touch screen is provided in each of the workplaces, and the control terminal is connected to the corresponding RFID reading and writing device; S3. Codify the steps of the loading, unloading and weighing process of the truck, and use the main control chip to read and write the RFID reader / writer to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID reader / writer is used to reassign the next process code to the RFID card on the corresponding truck, otherwise an abnormal alarm is issued.

[0007] In order to solve the above technical problems, another technical solution adopted by the present invention is: A truck loading and unloading weighing process monitoring system based on RFID, comprising a control terminal, an RFID reader and writer, and a PC terminal, wherein the control terminal is integrated with a main control chip and a touch display screen, the control terminal and the RFID reader and writer are both arranged in each workplace, a first computer program is run on the PC terminal, and a second computer program is run on the main control chip; When the PC executes the first computer program, the following steps are implemented: A separate RFID card is set on each truck and bound one by one, and the RFID reader / writer of each workplace is connected to the PC end. The RFID reader / writer is used on the PC end to write the truck license plate information into the corresponding RFID card to obtain the RFID card information; When the control terminal executes the second computer program, the following steps are implemented: It is connected to the RFID reader / writer under the workplace, and the loading, unloading and weighing process steps of the truck are coded. The RFID reader / writer is read and written by the main control chip to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID card on the corresponding truck is reassigned with the next process code with the help of the RFID reader / writer, otherwise an abnormal alarm is issued.

[0008] The beneficial effects of the present invention are: providing a method and system for monitoring the loading, unloading and weighing process of trucks based on RFID, by setting control terminals and RFID reading and writing devices at different loading, unloading and weighing process locations to read the RFID card information on the truck, thereby determining which truck is loading and unloading and the loading, unloading and weighing steps performed by the truck based on the RFID card information, and further judging whether the truck has any loading / unloading or weighing abnormalities based on the location where the RFID reading and writing device that reads the RFID card information is located, which can achieve full-process tracking and control of the truck in all links of loading, unloading and weighing, improve loading and unloading efficiency, ensure accurate weighing of goods, and avoid management loopholes caused by human errors such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without returning the skins for weighing after unloading, or trucks not loading and unloading at designated locations, and at the same time, when multiple trucks and multiple locations are loading and unloading simultaneously, abnormal vehicles and abnormal locations can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is an overall flow chart of a method for monitoring a truck loading and unloading weighing process based on RFID according to an embodiment of the present invention; Figure 2 The present invention is a schematic structural diagram of a truck loading and unloading weighing process monitoring system based on RFID according to an embodiment of the present invention.

[0010] Description of labels: 1. A truck loading, unloading and weighing process monitoring system based on RFID; 2. Control terminal; 3. RFID reading and writing device; 4. PC terminal. DETAILED DESCRIPTION

[0011] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following is an explanation in combination with the implementation modes and the accompanying drawings.

[0012] Please refer to Figure 1 A method for monitoring the process of loading and unloading and weighing a truck based on RFID, comprising the steps of: S1. Set a separate RFID card on each truck and bind them one by one. Connect the RFID reader / writer of each workplace to the PC. Use the RFID reader / writer on the PC to write the truck license plate information into the corresponding RFID card to obtain the RFID card information. S2. A control terminal with an integrated main control chip and a touch screen is provided in each of the workplaces, and the control terminal is connected to the corresponding RFID reading and writing device; S3. Codify the steps of the loading, unloading and weighing process of the truck, and use the main control chip to read and write the RFID reader / writer to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID reader / writer is used to reassign the next process code to the RFID card on the corresponding truck, otherwise an abnormal alarm is issued.

[0013] From the above description, it can be seen that the beneficial effects of the present invention are: providing a method for monitoring the loading, unloading and weighing processes of trucks based on RFID, by setting control terminals and RFID reading and writing devices at different loading, unloading and weighing process locations to read the RFID card information on the truck, so as to determine which truck is loading and unloading and the loading, unloading and weighing steps performed by the truck based on the RFID card information, and further judge whether the truck has any loading / unloading or weighing abnormalities based on the location where the RFID reading and writing device that reads the RFID card information is located, so as to achieve full-process tracking and control of the truck in all aspects of loading, unloading and weighing, improve loading and unloading efficiency, ensure the accuracy of cargo weighing, and avoid management loopholes caused by human errors such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without returning the skins for weighing after unloading, or trucks not loading and unloading at designated locations, and at the same time, when multiple trucks and multiple locations are loading and unloading operations at the same time, abnormal vehicles and abnormal locations can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation.

[0014] Furthermore, the workplace includes a loading place, a weighing place and an unloading place; The RFID card information includes the vehicle license plate number and the process step number of the vehicle currently in, and the process step number includes step 1-loading at the dock, step 2-gross weight weighing at the weighbridge, step 3-unloading at the unloading yard, and step 4-skin weight weighing at the weighbridge; When the truck completes step 4 - weighing in the weighbridge, it will return to step 1 - loading at the dock, and the process steps 1 to 4 will be repeated periodically.

[0015] From the above description, it can be seen that the workplace is divided into loading place, weighing place and unloading place, and RFID reading and writing devices are set according to the place, so as to ensure the subsequent accurate judgment of the trucks read in different processes in the corresponding loading and unloading and weighing processes; at the same time, an RFID card containing the unique license plate number information of the truck is placed on each truck, and the corresponding step number is pre-entered to facilitate the subsequent loading and unloading, weighing monitoring and control.

[0016] Furthermore, the step S3 is specifically as follows: S31, selecting the workplace through the touch display screen of the control terminal; S32, when the workplace is the loading site, identify the truck entering the loading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and determine whether the process step number on the RFID card information is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer after reading, otherwise, issue a loading abnormality alarm; When the workplace is the weighing place, identify the truck entering the weighing place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer after reading, otherwise, issue a weighing abnormality alarm; When the workplace is the unloading site, identify the truck entering the unloading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 3-unloading at the unloading yard. If so, modify the RFID card information to step 4-weighing the skin weight in the scale room with the help of the RFID reader / writer after reading, otherwise, an abnormal unloading alarm is issued.

[0017] Furthermore, the abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

[0018] From the above description, it can be seen that the steps corresponding to the loading and unloading or weighing process of the truck must correspond one by one to the workplace where the RFID reader is located to ensure the smooth progress of the entire loading and unloading and weighing process of the truck. Therefore, it is necessary to judge whether the workplace corresponds to the step number identified by its RFID reader to ensure that when abnormalities occur in each link of loading and unloading and weighing, an alarm can be issued in time to notify relevant personnel to take corresponding measures.

[0019] Furthermore, the main control chip is an STM32 chip; The RFID reader / writer is a 915MHz ultra-high frequency RFID reader / writer.

[0020] From the above description, it can be seen that the STM32 chip is used as the main control chip to ensure the data reading and processing rate. At the same time, the 915MHz ultra-high frequency RFID reader / writer is used to achieve 0-20m long-distance contactless communication.

[0021] Please refer to Figure 2, a truck loading and unloading weighing process monitoring system based on RFID, including a control terminal, an RFID reader and a PC, the control terminal is integrated with a main control chip and a touch display screen, the control terminal and the RFID reader are both arranged in each workplace, a first computer program is running on the PC, and a second computer program is running on the main control chip; When the PC executes the first computer program, the following steps are implemented: A separate RFID card is set on each truck and bound one by one, and the RFID reader / writer of each workplace is connected to the PC end. The RFID reader / writer is used on the PC end to write the truck license plate information into the corresponding RFID card to obtain the RFID card information; When the control terminal executes the second computer program, the following steps are implemented: It is connected to the RFID reader / writer under the workplace, and the loading, unloading and weighing process steps of the truck are coded. The RFID reader / writer is read and written by the main control chip to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID card on the corresponding truck is reassigned with the next process code with the help of the RFID reader / writer, otherwise an abnormal alarm is issued.

[0022] As can be seen from the above description, the beneficial effects of the present invention are: based on the same technical concept, in conjunction with the above-mentioned RFID-based truck loading and unloading weighing process monitoring method, a truck loading and unloading weighing process monitoring system based on RFID is provided, by setting a control terminal and an RFID reader / writer at different loading and unloading weighing process locations to read the RFID card information on the truck, thereby determining which truck is loading and unloading and the loading and unloading weighing steps performed by the truck according to the RFID card information, and further judging whether the truck has loading / unloading and weighing abnormalities according to the location where the RFID reader / writer that reads the RFID card information is located, which can achieve full-process tracking and control of the truck in each link of loading and unloading and weighing, improve loading and unloading efficiency, ensure accurate weighing of goods, and avoid management loopholes caused by human errors such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without returning the skins for weighing after unloading, or trucks not loading and unloading at designated locations, and at the same time, when multiple trucks and multiple locations are loading and unloading at the same time, abnormal vehicles and abnormal locations can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation.

[0023] Furthermore, the workplace includes a loading place, a weighing place and an unloading place; The RFID card information includes the vehicle license plate number and the process step number of the vehicle currently in, and the process step number includes step 1-loading at the dock, step 2-gross weight weighing at the weighbridge, step 3-unloading at the unloading yard, and step 4-skin weight weighing at the weighbridge; When the truck completes step 4 - weighing in the weighbridge, it will return to step 1 - loading at the dock, and the process steps 1 to 4 will be repeated periodically.

[0024] From the above description, it can be seen that the workplace is divided into loading place, weighing place and unloading place, and RFID reading and writing devices are set according to the place, so as to ensure the subsequent accurate judgment of the trucks read in different processes in the corresponding loading and unloading and weighing processes; at the same time, an RFID card containing the unique license plate number information of the truck is placed on each truck, and the corresponding step number is pre-entered to facilitate the subsequent loading and unloading, weighing monitoring and control.

[0025] Furthermore, the control terminal performs read and write control on the RFID reading and writing device through the main control chip to identify the received RFID card information, specifically: Selecting the workplace via the touch display screen; When the workplace is the loading site, identify the truck entering the loading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer after reading, otherwise, issue a loading abnormality alarm; When the workplace is the weighing place, identify the truck entering the weighing place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer after reading, otherwise, issue a weighing abnormality alarm; When the workplace is the unloading place, identify the truck entering the unloading place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 3-unloading at the unloading yard. If so, modify the RFID card information to step 4-weighing the skin in the scale room with the help of the RFID reader / writer after reading, otherwise, issue an abnormal unloading alarm.

[0026] Furthermore, the abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

[0027] From the above description, it can be seen that the steps corresponding to the loading and unloading or weighing process of the truck must correspond one by one to the workplace where the RFID reader is located to ensure the smooth progress of the entire loading and unloading and weighing process of the truck. Therefore, it is necessary to judge whether the workplace corresponds to the step number identified by its RFID reader to ensure that when abnormalities occur in each link of loading and unloading and weighing, an alarm can be issued in time to notify relevant personnel to take corresponding measures.

[0028] Furthermore, the main control chip is an STM32 chip; The RFID reader / writer is a 915MHz ultra-high frequency RFID reader / writer.

[0029] From the above description, it can be seen that the STM32 chip is used as the main control chip to ensure the data reading and processing rate. At the same time, the 915MHz ultra-high frequency RFID reader / writer is used to achieve 0-20m long-distance contactless communication.

[0030] The present invention provides a method and system for monitoring the loading, unloading and weighing process of a truck based on RFID, which is mainly used in the full-process tracking and control scenario of the truck in each link of loading, unloading and weighing, and is specifically described in combination with specific embodiments below: Please refer to Figure 1 , Embodiment 1 of the present invention is: A method for monitoring the truck loading and unloading weighing process based on RFID, such as Figure 1 As shown, the steps include: S1. Set up a separate RFID card on each truck and bind them one by one. Connect the RFID reader / writer of each workplace to the PC. Use the RFID reader / writer on the PC to write the truck's license plate information into the corresponding RFID card to obtain the RFID card information, so as to realize the corresponding identification of the truck.

[0031] S2. A control terminal with an integrated main control chip and a touch screen is set up in each workplace, and the control terminal is connected to the corresponding RFID reading and writing device.

[0032] The workplace includes a loading place, a weighing place and an unloading place. In this embodiment, multiple trucks need to be loaded at the dock, that is, the loading place can be set up at the dock; then after the trucks are loaded, they need to be weighed in the weighbridge room, and the weight weighed at this time is the truck + goods, that is, the gross weight is weighed; then the trucks need to be unloaded at the unloading yard; after unloading, they need to be weighed again in the weighbridge room, and the weight weighed at this time is the empty weight, that is, the tare weight is weighed; finally, the trucks return to the dock to be reloaded, and the above steps are repeated until all the goods at the dock are transported to the unloading yard.

[0033] That is, by setting up different RFID reading and writing devices at specific loading, unloading, weighing and unloading sites, it is ensured that the trucks read in different processes are accurately judged to be in the corresponding loading, unloading and weighing processes.

[0034] At the same time, in this embodiment, each truck is placed with an RFID card containing the truck's unique license plate number information, and the corresponding step number is pre-entered, that is, the RFID card information includes the vehicle license plate number and the step number of the vehicle. It can be pre-written through the PC end and the RFID reader-writer communication connection to achieve pre-writing, and can be subsequently modified through the main control chip connected to the RFID reader-writer communication connection, which is convenient for subsequent loading and unloading, weighing monitoring and control, that is: S3. Codify the steps of the loading, unloading and weighing process of the truck, and control the reading and writing of the RFID reader / writer through the main control chip to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID reader / writer is used to reassign the next process code to the RFID card on the corresponding truck, otherwise an abnormal alarm is issued.

[0035] The process step numbers include step 1 - loading at the dock, step 2 - gross weight weighing at the weighbridge, step 3 - unloading at the unloading yard, and step 4 - skin weight weighing at the weighbridge, which correspond to the above four steps.

[0036] When the truck completes step 4 - weighing the hull in the scale house, it will return to step 1 - loading at the dock to repeat the process steps 1 to 4, ensuring that the truck strictly follows this process step to perform loading, unloading and weighing periodically without missing any link in the middle. At the same time, when multiple trucks and multiple locations are loading and unloading at the same time, abnormal vehicles and abnormal locations can also be identified.

[0037] That is, in this embodiment, by setting control terminals and RFID reading and writing devices at different loading and unloading and weighing process locations to read the RFID card information on the truck, it is possible to determine which truck is loading and unloading and the loading and unloading and weighing steps performed by the truck based on the RFID card information, and further determine whether the truck has any loading / unloading or weighing abnormalities based on the location where the RFID reading and writing device that reads the RFID card information is located. This can achieve full-process tracking and control of the truck in all aspects of loading and unloading and weighing, improve loading and unloading efficiency, ensure the accuracy of cargo weighing, and avoid management loopholes caused by human errors, such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without returning the skins for weighing after unloading, or trucks not loading and unloading at designated locations. At the same time, when multiple trucks and multiple locations are loading and unloading at the same time, abnormal vehicles and abnormal locations can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation.

[0038] Embodiment 2 of the present invention is: A method for monitoring the process of loading and unloading and weighing trucks based on RFID. Based on the above-mentioned embodiment 1, in this embodiment, the RFID reader / writer adopts a 915MHz ultra-high frequency RFID reader / writer, which can realize non-contact long-distance communication with a reading and writing distance of 0~20m; the main control chip adopts an STM32 chip to ensure data reading and processing rate; each RFID reader / writer is connected to the STM32 main control chip in its respective workplace, and the STM32 main control chip is also connected to the touch display screen of the control terminal for serial communication, that is, the main control chip and the touch display screen are added to control and display the corresponding process, which is convenient for staff to analyze and operate. Then step S3 is specifically as follows: S31. Select a workplace through the touch screen of the control terminal. The touch screen can not only select the workplace, but also provide prompts on whether the truck process steps are normal.

[0039] S32, when the workplace is a loading site, identify the truck entering the loading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and determine whether the process step number on the RFID card information is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer after reading, otherwise, issue a loading abnormality alarm; When the workplace is a weighing place, identify the truck entering the weighing place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer after reading, otherwise an abnormal weighing alarm is issued.

[0040] When the workplace is an unloading site, identify the truck entering the unloading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 3-unloading at the unloading yard. If so, modify the RFID card information to step 4-weighing the skin in the scale room with the help of the RFID reader / writer after reading, otherwise, issue an abnormal unloading alarm.

[0041] Meanwhile, in the present embodiment, the abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

[0042] That is, in this embodiment, the steps corresponding to the loading and unloading or weighing process of the truck must correspond one to one with the workplace where the RFID reader / writer is located to ensure that the entire loading and unloading and weighing process of the truck proceeds smoothly. Therefore, it is necessary to judge whether the workplace and the step numbers identified by its RFID reader / writer correspond to each other to ensure that an abnormality occurs in each link of loading and unloading and weighing, so as to notify relevant personnel to take corresponding measures.

[0043] From the above, it can be seen that for the truck without any abnormality, after the truck completes the step corresponding to the step number on the RFID card information, the step number is modified to the next step number, that is: Step 1-loading at the dock -> Step 2-gross weight weighing in the weighbridge room -> Step 3-unloading at the unloading yard -> Step 4-skin weight weighing in the weighbridge room -> Step 1-loading at the dock, and repeat this cycle until all unloading is completed.

[0044] That is, after the truck that is normally carrying out the loading, unloading or weighing process completes the loading, unloading and weighing work corresponding to the step number, the main control chip STM32 operates the connected RFID reader and writer to reassign the step number on the RFID card information on the truck to the step number required for the next process, so that the entire loading, unloading and weighing of the truck can be carried out, that is, to achieve full tracking and control of the truck in each link of loading, unloading and weighing.

[0045] Please refer to Figure 2 , Embodiment 3 of the present invention is: A truck loading and unloading weighing process monitoring system 1 based on RFID includes a control terminal 2, an RFID reader / writer 3 and a PC terminal 4. The control terminal 2 is integrated with a main control chip and a touch display screen. The control terminal 2 and the RFID reader / writer 3 are both arranged in each workplace. A first computer program runs on the PC terminal 4, and a second computer program runs on the main control chip.

[0046] In this embodiment, when the PC terminal 4 executes the first computer program, the following steps are implemented: A separate RFID card is set on each truck and bound one by one. An RFID reader / writer 3 is set in each workplace and connected to a PC terminal 4. The RFID reader / writer 3 is used on the PC terminal 4 to write the truck's license plate information into the corresponding RFID card to obtain the RFID card information, thereby realizing corresponding identification of the truck.

[0047] The workplace includes a loading place, a weighing place and an unloading place. In this embodiment, multiple trucks need to load cargo at the dock, that is, the loading place can be set up at the dock; then after the trucks are loaded, they need to be weighed in the weighbridge room, and the weight weighed at this time is the truck + cargo, that is, the gross weight is weighed; then the trucks need to go to the unloading yard for unloading; after unloading, they need to be weighed again in the weighbridge room, and the weight weighed at this time is the empty truck weight, that is, the tare weight is weighed; finally, the trucks return to the dock to be reloaded, and the above steps are completed until all the cargo at the dock is transported to the unloading yard.

[0048] That is, by setting different RFID reading and writing devices 3 at specific loading and unloading, weighing and unloading places, it is ensured that the trucks read in different processes are accurately judged to be in the corresponding loading and unloading and weighing processes.

[0049] At the same time, in this embodiment, each truck is placed with an RFID card containing the truck's unique license plate number information, and the corresponding step number is pre-entered, that is, the RFID card information includes the vehicle license plate number and the step number of the vehicle currently in, which can be pre-written through the PC terminal 4 and the RFID reader-writer 3. The main control chip that is connected to the RFID reader-writer 3 for communication can be modified later, which is convenient for subsequent loading and unloading, weighing monitoring and control, that is: When the control terminal 2 executes the second computer program, the following steps are implemented: It is connected to the RFID reader / writer 3 in its own workplace, and the loading, unloading and weighing process steps of the truck are coded to facilitate the subsequent identification of the process sequence steps. The RFID reader / writer 3 is read and written by the main control chip to identify the information on the received RFID card. If the process code in the RFID card information read by the RFID reader / writer 3 meets the set requirements, the RFID card on the corresponding truck is reassigned with the next process code with the help of the RFID reader / writer 3, otherwise an abnormal alarm is issued.

[0050] The process step numbers include step 1 - loading at the dock, step 2 - gross weight weighing at the weighbridge, step 3 - unloading at the unloading yard, and step 4 - skin weight weighing at the weighbridge, which correspond to the above four steps.

[0051] When the truck completes step 4 - weighing the hull in the scale house, it will return to step 1 - loading at the dock to repeat the process steps 1 to 4, ensuring that the truck strictly follows this process step to perform loading, unloading and weighing periodically without missing any link in the middle. At the same time, when multiple trucks and multiple locations are loading and unloading at the same time, abnormal vehicles and abnormal locations can also be identified.

[0052] That is, in this embodiment, by setting a control terminal 2 and an RFID reader / writer 3 at different loading and unloading and weighing process locations to read the RFID card information on the truck, the RFID card information can be used to determine which truck is loading and unloading and the loading and unloading steps of the truck, and further determine whether the truck has any loading / unloading or weighing abnormalities based on the location where the RFID reader / writer 3 that reads the RFID card information is located. This can achieve full-process tracking and control of the truck in all aspects of loading and unloading and weighing, improve loading and unloading efficiency, ensure the accuracy of cargo weighing, and avoid management loopholes caused by human errors such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without weighing after unloading, or trucks not loading and unloading at designated locations. At the same time, when multiple trucks and multiple locations are loading and unloading at the same time, abnormal vehicles and abnormal locations can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation.

[0053] Please refer to Figure 2 , Embodiment 4 of the present invention is: A truck loading and unloading weighing process monitoring system 1 based on RFID, based on the above-mentioned embodiment 3, in this embodiment, the RFID reader 3 adopts a 915MHz ultra-high frequency RFID reader 3, which can realize non-contact long-distance communication with a reading and writing distance of 0~20m; the main control chip adopts an STM32 chip to ensure data reading and processing rate; each RFID reader 3 is connected to the STM32 main control chip in its respective workplace, and the STM32 main control chip is also connected to the touch screen of the control terminal 2 for serial communication, that is, the main control chip and the touch screen are added to control and display the corresponding process, which is convenient for staff to analyze and operate. Then the control terminal 2 performs read and write control on the RFID reader 3 through the main control chip, and identifies the RFID card information on the received RFID card, specifically: The workplace is selected on the touch screen of the control terminal 2. The touch screen can not only select the workplace, but also provide prompts on whether the truck process steps are normal.

[0054] When the workplace is a loading site, identify the truck entering the loading site, obtain the RFID card information on the truck read by the RFID reader / writer 3 through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer 3 after reading, otherwise, issue a loading abnormality alarm; When the workplace is a weighing place, identify the truck entering the weighing place, obtain the RFID card information on the truck read by the RFID reader / writer 3 through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information on the truck to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer 3 after reading, otherwise an abnormal weighing alarm is issued; When the workplace is an unloading site, identify the truck entering the unloading site, obtain the RFID card information on the truck read by the RFID reader / writer 3 through the main control chip, and judge whether the process step number on the RFID card information is step 3-unloading at the unloading yard. If so, after reading, use the RFID reader / writer 3 to modify the RFID card information on the truck to step 4-weighing the skin in the scale room, otherwise, an abnormal unloading alarm is issued.

[0055] Meanwhile, in the present embodiment, the abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

[0056] That is, in this embodiment, the steps corresponding to the loading and unloading or weighing process of the truck must correspond one to one with the workplace where the RFID reader / writer 3 is located to ensure that the entire loading and unloading and weighing process of the truck proceeds smoothly. Therefore, it is necessary to judge whether the workplace and the step number identified by its RFID reader / writer 3 correspond to each other to ensure that an abnormality occurs in each link of loading and unloading and weighing, so as to notify relevant personnel to take corresponding measures.

[0057] From the above, it can be seen that for trucks without abnormalities, after the truck completes the step corresponding to the step number on the RFID card information, the step number is modified to the next step number, that is: Step 1-loading at the dock -> Step 2-gross weight weighing in the weighbridge room -> Step 3-unloading at the unloading yard -> Step 4-skin weight weighing in the weighbridge room -> Step 1-loading at the dock, and repeat this cycle until all unloading is completed.

[0058] That is, after a truck that is normally undergoing the loading, unloading or weighing process completes the loading, unloading and weighing work corresponding to the step number, the step number on its RFID card information can be rewritten as the step number required for the next process to facilitate the entire loading, unloading and weighing of the truck, that is, to achieve full tracking and control of the truck in all aspects of loading, unloading and weighing.

[0059] In summary, the RFID-based truck loading and unloading and weighing process monitoring method and system provided by the present invention can realize the full tracking and control of the truck in each link of loading and unloading and weighing, improve the loading and unloading efficiency, ensure the accuracy of the cargo weighing measurement, and avoid management loopholes caused by human errors such as trucks directly unloading without gross weight weighing during loading and unloading, trucks directly loading without returning the skins for weighing after unloading, or trucks not loading and unloading at designated locations. At the same time, when multiple trucks and multiple locations are loading and unloading simultaneously, abnormal vehicles and abnormal places can also be identified, thereby promoting the development of the logistics industry towards intelligence and automation.

[0060] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A method for monitoring the truck loading and unloading weighing process based on RFID, characterized in that: Includes steps: S1. Set a separate RFID card on each truck and bind them one by one. Connect the RFID reader / writer of each workplace to the PC. Use the RFID reader / writer on the PC to write the truck license plate information into the corresponding RFID card to obtain the RFID card information. S2. A control terminal with an integrated main control chip and a touch screen is provided in each of the workplaces, and the control terminal is connected to the corresponding RFID reading and writing device; S3. Codify the steps of the loading, unloading and weighing process of the truck, and use the main control chip to read and write the RFID reader / writer to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID reader / writer is used to reassign the next process code to the RFID card on the corresponding truck, otherwise an abnormal alarm is issued.

2. The method for monitoring the truck loading and unloading weighing process based on RFID according to claim 1, characterized in that: The workplace includes loading place, weighing place and unloading place; The RFID card information includes the vehicle license plate number and the process step number of the vehicle currently in, and the process step number includes step 1-loading at the dock, step 2-gross weight weighing at the weighbridge, step 3-unloading at the unloading yard, and step 4-skin weight weighing at the weighbridge; When the truck completes step 4 - weighing in the weighbridge, it will return to step 1 - loading at the dock, and the process steps 1 to 4 will be repeated periodically.

3. The method for monitoring the truck loading and unloading weighing process based on RFID according to claim 2 is characterized in that: The step S3 is specifically as follows: S31, selecting the workplace through the touch display screen of the control terminal; S32, when the workplace is the loading site, identify the truck entering the loading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and determine whether the process step number on the RFID card information is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer after reading, otherwise, issue a loading abnormality alarm; When the workplace is the weighing place, identify the truck entering the weighing place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer after reading, otherwise, issue a weighing abnormality alarm; When the workplace is the unloading site, identify the truck entering the unloading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 3-unloading at the unloading yard. If so, modify the RFID card information to step 4-weighing the skin weight in the scale room with the help of the RFID reader / writer after reading, otherwise, an abnormal unloading alarm is issued.

4. The method for monitoring the truck loading and unloading weighing process based on RFID according to claim 3 is characterized in that: The abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

5. The method for monitoring the truck loading and unloading weighing process based on RFID according to claim 1, characterized in that: The main control chip is an STM32 chip; The RFID reader / writer is a 915MHz ultra-high frequency RFID reader / writer.

6. A truck loading and unloading weighing process monitoring system based on RFID, characterized in that: It includes a control terminal, an RFID reader and a PC, wherein the control terminal is integrated with a main control chip and a touch display screen, the control terminal and the RFID reader are both arranged in each workplace, a first computer program is running on the PC, and a second computer program is running on the main control chip; When the PC executes the first computer program, the following steps are implemented: A separate RFID card is set on each truck and bound one by one, and the RFID reader / writer of each workplace is connected to the PC end. The RFID reader / writer is used on the PC end to write the truck license plate information into the corresponding RFID card to obtain the RFID card information; When the control terminal executes the second computer program, the following steps are implemented: It is connected to the RFID reader / writer under the workplace, and the loading, unloading and weighing process steps of the truck are coded. The RFID reader / writer is read and written by the main control chip to identify the received RFID card information. If the process code in the RFID card information read by the RFID reader / writer meets the set requirements, the RFID card on the corresponding truck is reassigned with the next process code with the help of the RFID reader / writer, otherwise an abnormal alarm is issued.

7. The RFID-based truck loading and unloading weighing process monitoring system according to claim 6 is characterized in that: The workplace includes loading place, weighing place and unloading place; The RFID card information includes the vehicle license plate number and the process step number of the vehicle currently in, and the process step number includes step 1-loading at the dock, step 2-gross weight weighing at the weighbridge, step 3-unloading at the unloading yard, and step 4-skin weight weighing at the weighbridge; When the truck completes step 4 - weighing in the weighbridge, it will return to step 1 - loading at the dock, and the process steps 1 to 4 will be repeated periodically.

8. The RFID-based truck loading and unloading weighing process monitoring system according to claim 7 is characterized in that: The control terminal performs read and write control on the RFID reading and writing device through the main control chip, and identifies the received RFID card information, specifically: Selecting the workplace via the touch display screen; When the workplace is the loading site, identify the truck entering the loading site, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information is step 1-loading at the dock. If so, modify the RFID card information to step 2-gross weight weighing in the weighbridge room with the help of the RFID reader / writer after reading, otherwise, issue a loading abnormality alarm; When the workplace is the weighing place, identify the truck entering the weighing place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 2-gross weight weighing in the weighing room or step 4-skin weight weighing in the weighing room. If so, modify the RFID card information to step 3-unloading at the unloading yard or step 1-loading at the dock with the help of the RFID reader / writer after reading, otherwise, issue a weighing abnormality alarm; When the workplace is the unloading place, identify the truck entering the unloading place, obtain the RFID card information read by the RFID reader / writer through the main control chip, and judge whether the process step number on the RFID card information on the truck is step 3-unloading at the unloading yard. If so, modify the RFID card information to step 4-weighing the skin in the scale room with the help of the RFID reader / writer after reading, otherwise, issue an abnormal unloading alarm.

9. The RFID-based truck loading and unloading weighing process monitoring system according to claim 8 is characterized in that: The abnormal loading alarm, the abnormal weighing alarm and the abnormal unloading alarm include a buzzer alarm and display of corresponding abnormal loading, weighing and unloading abnormal prompt information on the touch display screen.

10. The RFID-based truck loading and unloading weighing process monitoring system according to claim 6, characterized in that: The main control chip is an STM32 chip; The RFID reader / writer is a 915MHz ultra-high frequency RFID reader / writer.

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