Rail vehicle positioning and track distinguishing system and method based on RFID

Abstract

The invention relates to a system and a method for positioning a rail vehicle and distinguishing a rail based on RFID (Radio Frequency Identification Device), and the system for positioning the rail vehicle and distinguishing the rail based on the RFID comprises a computer, an RFID card reader, an RFID passive card, a base station client, a base station server, a switch and a signal lamp, the track is divided into a plurality of sections, each section corresponds to two signal lamps, and the two signal lamps correspond to two driving directions of the track respectively; each signal lamp is correspondingly provided with a plurality of RFID passive cards, and the RFID passive cards are arranged on the track at certain intervals; the RFID card reader is arranged on a rail vehicle; the RFID passive card is arranged on the track; the RFID passive card and the RFID card reader are correspondingly arranged; the computer is connected with the base station server through the switch, and the base station server is connected with the base station client; and the switch is responsible for data transmission between the base station server and the computer.

Description

Technical Field

[0001] The present invention relates to the field of mining transportation equipment, in particular to a system and method for locating rail vehicles and distinguishing tracks based on RFID. Background Art

[0002] Coal mining operations often require the use of different types of rail vehicles, such as coal carriers, personnel carriers, and equipment transporters. However, current coal mine positioning systems often fail to distinguish between the track and location of rail vehicles, which can lead to operational chaos. This is especially true on long, straight tracks where multiple rail vehicles, lacking positional information, can easily cause conflicting movements, increasing the risk of accidents and impacting work efficiency. Summary of the Invention

[0003] To solve the above technical problems, the present invention discloses a system and method for locating rail vehicles and distinguishing tracks based on RFID, which can effectively distinguish and determine the position of vehicles.

[0004] The present invention provides a system for locating rail vehicles and distinguishing tracks based on RFID, wherein the system is used for locating rail vehicles and distinguishing tracks when rail vehicles are traveling on tracks; The system includes a computer, an RFID card reader, an RFID passive card, a base station client, a base station server, a switch, and a signal light; The track is divided into several sections, each section corresponds to two signal lights, the two signal lights are in opposite directions, corresponding to the two travel directions of the track; each signal light is corresponding to a number of RFID passive cards, and the RFID passive cards are set on the track at a certain distance; The RFID card reader is arranged on the rail vehicle; the RFID passive card is arranged on the track; the RFID passive card and the RFID card reader are arranged correspondingly, so that when the rail vehicle passes by, the RFID card reader can read the information of the RFID passive card; The computer is connected to the base station server through a switch, the base station server is connected to the base station client, and the base station client is set on the rail vehicle; the switch is responsible for data transmission between the base station server and the computer.

[0005] Furthermore, the base station client is a wireless wifi6 base station client; the base station server is a wireless wifi6 base station server.

[0006] Furthermore, each signal light is provided with two passive RFID cards, and the passive RFID cards are provided at the tail of the section.

[0007] The present invention also provides a method for locating and differentiating tracks of rail vehicles based on RFID, which is implemented based on a system and includes the following steps: Step 1, system initialization: the system is powered on and the computer program is initialized to prepare for data collection; Step 2, data collection: When a rail vehicle passes by the RFID passive card in the current section, the RFID reader reads the data of the RFID passive card in the current section and transmits the data to the computer; Step 3, data analysis: The computer uses an algorithm model to comprehensively compare the collected data, determine the position and direction of the rail vehicle, and display it on the computer; Step 4: Based on the position and direction of the rail vehicle, the computer controls the signal light.

[0008] Furthermore, in step 2, the RFID card reader reads the data of the RFID passive card and transmits it to the base station server through the base station client, and then transmits the data to the computer through the switch.

[0009] Furthermore, step 3 includes the following steps: Step 3 includes the following steps: Step 31, data collection: the computer receives data, the data including the RFID reader ID of the rail vehicle, the RFID passive card data, and the priority of the rail vehicle; Step 32, data preprocessing: performing data preprocessing on the data received by the computer, wherein the data preprocessing includes data cleaning, missing value processing and feature standardization; Step 33: The computer loads a lane track map; Step 34: The computer inputs the pre-processed data into an algorithm model to determine the direction of travel of the rail vehicle and the travel speed of the current section, and predicts the travel speed and travel position of the rail vehicle in the next section and the time point when the rail vehicle arrives at the two RFID passive cards in the next section; Step 35: Mark the travel positions of all rail vehicles on the roadway track map, and determine whether rail vehicles with different travel directions enter the same section at the same time.

[0010] Furthermore, in step 34, the travel speed of the rail vehicle in the current section is determined based on the time when the rail vehicle passes the two RFID passive cards in the current section and the distance and time interval between the two RFID passive cards in the current section; the travel speed, travel position, and time point of the rail vehicle reaching the two RFID passive cards in the next section are determined based on the travel speed of the rail vehicle in the current section.

[0011] Furthermore, in step 4, the computer controls the signal light based on the judgment result. If the judgment result is no, the signal light in the direction of travel of the rail vehicle is directly controlled to display the corresponding color; If the judgment result is yes, the priority of the rail vehicles with different travel directions entering the same section is determined, the signal light in the travel direction of the rail vehicle with high priority is set to green, and the signal light in the travel direction of the rail vehicle with low priority is set to red. At the same time, the rail vehicle with low priority enters the avoidance lane; after the rail vehicle with high priority passes, the signal light in the travel direction of the rail vehicle with low priority is set to green.

[0012] Beneficial effects of the present invention: The method of the present invention can effectively collect the exact location information of the vehicle at important locations, distinguish which track the vehicle is on, and provide the computer with reliable data and vehicle priority comparison, thereby controlling the signal lights and providing driving guidance for the vehicle driver. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic diagram of the system of the present invention; Figure 2 Schematic diagram of the method of the present invention.

[0014] Explanation of Figure Numbers 1. Computer; 2. RFID card reader; 3. RFID passive card; 4. Base station client; 5. Base station server; 6. Switch; 7. Traffic light. DETAILED DESCRIPTION

[0015] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings in the embodiments of the present invention. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can also be implemented in other ways different from those described herein, and those skilled in the art can make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0016] The present invention discloses a system and method for locating rail vehicles and distinguishing tracks based on RFID, which can effectively distinguish and determine the positions of rail vehicles.

[0017] The present invention discloses a system for locating rail vehicles and distinguishing tracks based on RFID, the system includes a computer 1, an RFID card reader 2, an RFID passive card 3, a base station client 4, a base station server 5, a switch 6 and a signal light 7. Figure 1 shown.

[0018] Computer 1 is connected to base station server 5 via switch 6, which is connected to base station client 4. Base station client 4 is installed on a rail vehicle. Switch 6 is installed in the lane and is responsible for data transmission between base station server 5 and computer 1.

[0019] Computer 1 includes a processor, memory, a graphics processor, storage, and a display. The processor is a multi-core high-performance processor; the memory is a large-capacity, high-speed memory; the graphics processor is a high-performance discrete graphics card; the storage uses a fast solid-state drive as the system disk and a large-capacity hard drive for data storage; the display is a high-resolution display, and the operating system is Windows. Computer 1 receives and analyzes data from RFID reader 2 and sends control commands to signal light 7.

[0020] The track is divided into several sections, each with two signal lights 7. The two signal lights 7 are in opposite directions, corresponding to rail vehicles on the same track in opposite directions. The signal lights 7 receive command information from the computer 1 and display different states.

[0021] Each signal light 7 corresponds to two RFID passive cards 3. The two RFID passive cards 3 are arranged on the track at a certain distance.

[0022] RFID card readers 2 are installed on rail vehicles, and RFID passive cards 3 are placed in correspondence with these readers. Specifically, RFID card readers 2 are mounted on the front chassis of each rail vehicle (motor locomotive) to read the data from the RFID passive cards 3. The RFID passive cards 3 are installed on the rail sleepers of each track section, and the location information of each RFID passive card 3 is recorded before installation.

[0023] Based on this information, computer 1 can construct a roadway track map. This roadway track map includes track information (distribution of each branch road, information about the RFID passive card 3 at each branch road and key locations), the ID of the RFID reader 2 carried by the rail vehicle, information about the track sections, and the ID of the signal light 7 corresponding to each section.

[0024] The present invention provides an RFID-based method for locating and distinguishing rail vehicles on tracks, implemented using a rail vehicle positioning system. The method collects data from passive RFID cards (3) to determine and analyze the rail vehicle's position and direction of travel. It also predicts and calibrates the rail vehicle's actual position based on an algorithmic model. A computer (1) then issues corresponding control instructions to a signal light (7) to inform the rail vehicle driver whether to enter a designated area.

[0025] The present invention is based on the method of RFID rail vehicle positioning and track differentiation, such as Figure 2As shown, the method is implemented based on a rail vehicle positioning system and specifically includes the following steps: Step 1, system initialization: The system is powered on and the computer 1 program is initialized to prepare for data collection.

[0026] Step 2, data collection: When the rail vehicle runs on the track, when the rail vehicle passes the RFID passive card 3 of the current section, the RFID card reader 2 on the rail vehicle reads the data of the RFID passive card 3 of the current section and transmits the data to the computer 1.

[0027] Specifically, after the RFID reader 2 reads the data of the RFID passive card 3, it transmits the data to the base station server 5 through the base station client 4, and then transmits the data to the computer 1 through the switch 6. Preferably, the base station client 4 is a wireless wifi6 base station client. The base station server 5 is a wireless wifi6 base station server.

[0028] Step 3, data analysis: The computer 1 uses an algorithm model to comprehensively compare the collected data to determine the moving position and direction of the rail vehicle.

[0029] The process of determining the position and direction of travel of a rail vehicle is as follows: Step 31, data collection: the computer 1 receives data, including the ID of the RFID reader 2 of the rail vehicle and the data of the RFID passive card 3; Step 32, data preprocessing: Computer 1 preprocesses the received data, including data cleaning, missing value processing and feature standardization; Step 33: Computer 1 loads the roadway track map; Step 34: Computer 1 inputs the preprocessed data into an algorithm model to determine the rail vehicle's direction of travel and speed in the current section. It also predicts the rail vehicle's speed and location in the next section, as well as the time it will reach the two RFID passive cards 3 in the next section. Computer 1 determines and identifies the track the rail vehicle is on based on the RFID passive cards 3 on the track read by RFID reader 2 (the track whose RFID passive card is read indicates the track the rail vehicle is on). The traveling speed of the current section of the rail vehicle is determined based on the time when the rail vehicle passes the two RFID passive cards 3 of the current section and the distance and time interval between the two RFID passive cards 3 of the current section.

[0030] Specifically, assume that the time it takes for a rail vehicle to pass through two RFID passive cards 3 in section N is t i to t i+1 (The time point when the rail vehicle passes the first RFID passive card 3 in section N is t iThe time point after the second RFID passive card 3 is t i+1 ), then the average speed v of the rail vehicle between the two RFID passive cards 3 in section N is i :v i =d i / (t i+1- t i ).

[0031] Since the speed of the rail vehicle does not change much during its travel, the average speed v of the rail vehicle between the two RFID passive cards 3 in section N is i It can be regarded as the speed of the rail vehicle in section N+1; Based on the rail vehicle's speed in section N+1, its position can be predicted, and thus the time it will arrive in section N+2. Since the rail vehicle's speed in section N+1 is known, the rail vehicle's position in section N+1 can be determined based on the travel time. Furthermore, the time it will arrive in section N+2 can be estimated.

[0032] Step 35: Based on the travel positions of all rail vehicles predicted in step S34, mark the travel positions of all rail vehicles on the roadway track map, and determine whether rail vehicles with different travel directions enter the same section at the same time; Step 4: Based on the position and direction of travel of the rail vehicle, the computer 1 controls the signal light 7 .

[0033] If the result of the judgment is no, the signal light 7 of the section that directly controls the traveling direction of the rail vehicle displays a corresponding color.

[0034] If the result is yes, the priority of the rail vehicle is determined. The signal light 7 in the direction of travel of the high-priority rail vehicle is set to green, and the signal light 7 in the direction of travel of the low-priority rail vehicle is set to red. At the same time, the low-priority rail vehicle enters the avoidance lane. After the high-priority rail vehicle passes, the signal light 7 in the direction of travel of the low-priority rail vehicle is set to green, and the low-priority rail vehicle passes according to the instructions of the signal light 7.

[0035] The priorities of rail vehicles are pre-set and stored as data in the computer and can be called up at any time.

[0036] The following are specific embodiments: Step 1: After the system is powered on, the program is initialized and data collection is ready. Two railcars, No. 1 and No. 2, are running on the track. The RFID reader ID for No. 1 is 1, with a high priority, while the RFID reader ID for No. 2 is 2, with a medium priority.

[0037] Step 2: While rail vehicle No. 1 is traveling, the RFID card reader 2 of rail vehicle No. 1 reads the information of the RFID passive card 3. While rail vehicle No. 2 is traveling, the RFID card reader 2 of rail vehicle No. 2 reads the information of the RFID passive card 3.

[0038] The RFID reader 2 of rail vehicle No. 1 reads the information of the RFID passive card 3, and then transmits the data information read by the RFID reader 2 of rail vehicle No. 1 to the base station server 5 through the base station client 4, and then transmits the data to the computer through the switch 6. Rail vehicle No. 2 performs the same operation.

[0039] Step 3: Use the algorithm model to comprehensively compare the collected information to determine the travel position and travel direction of rail vehicle No. 1 and the travel position and travel direction of rail vehicle No. 2.

[0040] The RFID reader ID of rail vehicle No. 1 is 1. It reads data from the first RFID passive card at position d at time t, and reads data from the second RFID passive card at position d+2 meters at time (t+1) seconds. This allows us to determine the track that rail vehicle No. 1 is on and its direction of travel is from the first RFID passive card to the second RFID passive card. The speed of rail vehicle No. 1 in the current section can also be determined.

[0041] The algorithm predicts the speed of railcar No. 1 as it enters section Q1. This speed is then mapped on the roadway map, predicting the time it will reach the next section, Q2. Similarly, the location and direction of railcar No. 2 are determined.

[0042] If railcar No. 1 and railcar No. 2 are likely to enter section Q1 at the same time, the signal light in the direction of travel of railcar No. 1 will be set to green, and the signal light 7 in the direction of travel of railcar No. 2 will be set to red. At this time, railcar No. 2 will enter the avoidance lane and wait for railcar No. 1 to pass before driving according to the instructions of signal light 7.

[0043] Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

Claims

1. A system for locating rail vehicles and distinguishing tracks based on RFID, characterized in that: The system is used for locating rail vehicles and distinguishing tracks when rail vehicles are traveling on tracks; The system includes a computer, an RFID card reader, an RFID passive card, a base station client, a base station server, a switch, and a signal light; The track is divided into several sections, each section corresponds to two signal lights, the two signal lights are in opposite directions, corresponding to the two travel directions of the track; each signal light is corresponding to a number of RFID passive cards, and the RFID passive cards are set on the track at a certain distance; The RFID card reader is arranged on the rail vehicle; the RFID passive card is arranged on the track; the RFID passive card and the RFID card reader are arranged correspondingly, so that when the rail vehicle passes by, the RFID card reader can read the information of the RFID passive card; The computer is connected to the base station server through a switch, the base station server is connected to the base station client, and the base station client is set on the rail vehicle; the switch is responsible for data transmission between the base station server and the computer.

2. The system for locating and differentiating tracks of rail vehicles based on RFID according to claim 1, characterized in that: The base station client is a wireless wifi6 base station client; the base station server is a wireless wifi6 base station server.

3. The system for locating and differentiating rail vehicles based on RFID according to claim 1, characterized in that: Each signal light is correspondingly provided with two RFID passive cards, and the RFID passive cards are arranged at the tail of the section.

4. A method for locating and distinguishing tracks of rail vehicles based on RFID, characterized in that: The method is based on the system according to claim 3, and the method comprises the following steps: Step 1, system initialization: the system is powered on and the computer program is initialized to prepare for data collection; Step 2, data collection: When a rail vehicle passes by the RFID passive card in the current section, the RFID reader reads the data of the RFID passive card in the current section and transmits the data to the computer; Step 3, data analysis: The computer uses an algorithm model to comprehensively compare the collected data, determine the position and direction of the rail vehicle, and display it on the computer; Step 4: Based on the position and direction of the rail vehicle, the computer controls the signal light.

5. The method for locating and differentiating tracks of rail vehicles based on RFID according to claim 4, characterized in that: In step 2, the RFID reader reads the data of the RFID passive card and transmits it to the base station server through the base station client, and then transmits the data to the computer through the switch.

6. The method for locating and differentiating tracks of rail vehicles based on RFID according to claim 4, characterized in that: Step 3 includes the following steps: Step 31, data collection: the computer receives data, the data including the RFID reader ID of the rail vehicle, the RFID passive card data, and the priority of the rail vehicle; Step 32, data preprocessing: performing data preprocessing on the data received by the computer, wherein the data preprocessing includes data cleaning, missing value processing and feature standardization; Step 33: The computer loads a lane track map; Step 34: The computer inputs the pre-processed data into an algorithm model to determine the direction of travel of the rail vehicle and the travel speed of the current section, and predicts the travel speed and travel position of the rail vehicle in the next section and the time point when the rail vehicle arrives at the two RFID passive cards in the next section; Step 35: Mark the travel positions of all rail vehicles on the roadway track map, and determine whether rail vehicles with different travel directions enter the same section at the same time.

7. The method for locating and differentiating tracks of rail vehicles based on RFID according to claim 6, characterized in that: In step 34, the travel speed of the rail vehicle in the current section is determined based on the time when the rail vehicle passes the two RFID passive cards in the current section and the distance and time interval between the two RFID passive cards in the current section; the travel speed, travel position of the rail vehicle in the next section, and the time point when the rail vehicle reaches the two RFID passive cards in the next section are determined based on the travel speed of the rail vehicle in the current section.

8. The method for locating and differentiating tracks of rail vehicles based on RFID according to claim 6, characterized in that: In step 4, the computer controls the signal light based on the judgment result. If the judgment result is no, the signal light in the direction of travel of the rail vehicle is directly controlled to display the corresponding color; If the judgment result is yes, the priority of the rail vehicles with different travel directions entering the same section is determined, the signal light in the travel direction of the rail vehicle with high priority is set to green, and the signal light in the travel direction of the rail vehicle with low priority is set to red. At the same time, the rail vehicle with low priority enters the avoidance lane; after the rail vehicle with high priority passes, the signal light in the travel direction of the rail vehicle with low priority is set to green.

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