An end light rail identification of multiple unit trains - platform anti-misboarding dynamic guidance system
Through the optical rail marking at the end of the EMU-platform anti-missing dynamic guidance system, the problem that traditional rail transit guidance system is difficult to accurately identify the train identity and lack of transfer information integration in the case of multiple trains parallel, achieving accurate transfer and efficient travel for passengers.
Patent Information
- Application Number
- CN202510637280.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2045-05-19
AI Technical Summary
Traditional rail transit guidance systems are difficult to accurately distinguish the identity of trains when multiple trains are parallel, resulting in troubles between passengers' mis-boarding and transfers, and lack the ability to integrate information on trains transferred from adjacent platforms and different routes, reducing passenger travel efficiency and station operation order.
The optical rail identification system at the end of the EMU is adopted to prevent mis-ride from the platform, and comprehensive information is obtained through the information interaction module. The optical rail identification module on the end of the train is used to generate an optical rail identification signal carrying the train's exclusive identity information. Combined with the platform signal reception and processing module, the central control module generates guidance instructions, and the platform optical rail display module provides clear guidance.
It effectively avoids passengers' miscarriage, improves passengers' transfer efficiency and travel experience in complex scenarios of multiple trains parallel, and ensures that passengers can accurately and quickly find the number of passengers and transfer paths.
Smart Images

Figure CN120171608B_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of rail transit, and particularly to a dynamic guiding system for preventing misboarding at the platform with light rail identification at the end of a multiple unit train. Background Art
[0002] With the accelerating urbanization process and the increasing demand for people's travel, rail transit, as an efficient, convenient and high-capacity public transportation mode, the rail transit network is becoming more and more intensive. Major cities have successively built complex and large-scale rail transit systems to cope with the increasing passenger flow pressure. Under this background, as a key node of the rail transit network, the operation efficiency and passenger service quality of stations face higher requirements. Especially for large transportation hubs, there are often multiple lines and trains in multiple directions converging. The situation where multiple multiple unit trains stop at the same platform or cross-run is becoming more and more common. At the same time, the transfer demand has also shown an explosive growth. Such a complex and changeable operation scenario brings great challenges to passengers' boarding and transfer, and also puts forward more stringent requirements for the guiding system of rail transit.
[0003] Traditional rail transit guiding systems have many limitations in design and are difficult to meet the guiding requirements in the current complex scenarios. Most traditional systems only guide the trains currently entering the station on this platform and lack the ability to integrate information about adjacent platforms and transfer trains on different lines. In the case of multiple trains running in parallel, passengers can often only obtain the basic information of the trains on this platform and have no idea about the information of the transfer trains arriving at the adjacent platform soon. This leads to passengers spending a lot of time looking for transfer routes between platforms when transferring, which not only wastes passengers' travel time, reduces travel efficiency, but also brings great inconvenience and trouble to passengers. In addition, in the case of multiple trains running in parallel, it is difficult for traditional guiding systems to accurately distinguish the identities of different trains, and passengers may misboard due to misjudging train information. This incomplete information and inaccurate guiding make passengers face many troubles during the transfer process, not only reducing passengers' travel efficiency, but also having a negative impact on the normal operation order of the station, and it is difficult to meet the efficient and accurate guiding requirements in complex scenarios. Summary of the Invention
[0004] The object of the present invention is to make up for the deficiencies of the prior art and provide a dynamic guiding system for preventing misboarding at the platform with light rail identification at the end of the EMU. It can obtain comprehensive information through the information interaction module, generate a light rail identification signal carrying the exclusive identity information of the train by using the light rail identification module at the train end, accurately identify the train identity information through the platform signal receiving and processing module, and the central control module generates guiding instructions for the train car position at the platform and the best path for transferring trains to the platform and carriages based on preset rules and path planning algorithms, and finally provides clear guidance for passengers intuitively through the platform light rail display module. This system can effectively reduce the trouble of passengers' misboarding and transfer and improve the guiding service level of rail transit.
[0005] To solve the above technical problems, the present invention provides the following technical solutions: A dynamic guiding system for preventing misboarding at the platform with light rail identification at the end of the EMU, which system comprises the following components;
[0006] Information interaction module: By means of a high-performance communication chip and multiple interfaces, a two-way data transmission mechanism is established to perform integrity verification and priority scheduling on the obtained train dispatching information, providing reliable data support for the system;
[0007] Light rail identification module at the train end: Collaborated by a signal encoding unit and an optical signal transmitting unit, the train number and departure time information are encoded by the signal encoding unit and modulated onto the optical signal by the optical signal transmitting unit, and then stably transmitted to the platform after optical processing for train identity recognition;
[0008] Platform signal receiving and processing module: Using an optical signal receiving unit, a signal recognition unit and an interference shielding unit, the received optical signal is converted, analyzed and filtered for interference, and the train identity information is accurately obtained and transmitted to the central control module.
[0009] Central control module: Based on a high-performance hardware platform, combined with a transfer rule database, analyze the received train identity and transfer information, and generate train car position guiding instructions and transfer path guiding instructions by using specific calculation logic;
[0010] Platform light rail display module: With an LED light strip as the main body, through a driving and control circuit, according to the instructions of the central control module, combined with the ambient light and the train status, adjust the light rail brightness and flashing mode to achieve guiding for boarding and transferring.
[0011] Further, the information interaction module performs integrity verification and priority scheduling on the obtained train dispatching information, and its integrity verification formula is: , where is the data verification value, used to verify the integrity and accuracy of the received data, is the A data element is directly extracted in sequence from the received data block and represents a fragment of train dispatching information. is the weight coefficient of the th data element, which is dynamically allocated according to the importance of the data. is the check modulus, which determines the range of the check value and is a prime number, for CRC is the cyclic redundancy check value of the data block, which is obtained by calculating the data block D through a standard cyclic redundancy check algorithm. Its priority scheduling formula is: , where is the priority value of the th data, which determines the processing order. is the time urgency index of the data, which is calculated based on the train arrival time. is the source credibility index of the data, which is assigned different values according to factors such as the system reliability and authority of the data source. is the usage frequency index of the data, which reflects the importance of the data and is determined by statistically counting the usage frequency of the data within a certain time period. is the weighting coefficient, which is obtained through training with historical data, and .
[0012] Furthermore, the train - end optical track identification module is mainly composed of a signal encoding unit and an optical signal transmitting unit. The signal encoding unit processes the train number, departure time, and carriage number information through a multi - dimensional information encoding algorithm. Its algorithm formula is: , where is the generated train identity code, which is unique. is the numerical representation of the train number. is the timestamp value of the departure time, accurate to minutes. is the number representing the carriage number. are the encryption keys for the train number, time, and carriage number respectively. is the exclusive - OR operation, which is used to combine information from different dimensions. The optical signal transmitting unit modulates the encoded information onto the optical signal using the optical signal intensity modulation equation. Its equation is: , where is the function of the modulated optical signal intensity changing with time. is the basic light intensity, which determines the visibility of the optical track. According to the visibility requirements of the optical track identification in different environments, a suitable basic light intensity value is determined through experiments and actual tests. is the modulation depth, which controls the signal change amplitude. is the train identity code. is the carrier frequency, which determines the transmission characteristics of the signal. The emitted optical signal is collimated through an optical lens to control the emission angle and coverage range of the optical track identification signal, ensuring that the signal can be accurately and stably transmitted to the platform.
[0013] Furthermore, the platform signal receiving and processing module consists of an optical signal receiving unit, a signal recognition unit, and an interference shielding unit. The optical signal receiving unit uses a highly sensitive photodetector to capture the weak optical signal emitted by the optical track identification module at the train end and convert it into an electrical signal. The signal recognition unit processes the converted electrical signal. By analyzing the waveform, frequency, and amplitude characteristics of the electrical signal, the train identity information carried therein is extracted. And the signal recognition unit sets a multiple feature comparison mechanism to verify and confirm the extracted information multiple times. The interference shielding unit uses a combination of a shielding cover and a filter circuit. The shielding cover can block the influence of external electromagnetic interference on the module, and the filter circuit can filter out interference signals with frequencies close to that of the optical track identification signal. By selectively filtering signals of different frequencies, only the train optical track identification signals within a specific frequency range are allowed to pass, so as to accurately obtain the identity information of each train and transmit it to the central control module.
[0014] Furthermore, the central control module constructs a hardware platform based on a central processor and a storage unit. At the software level, a transfer rule database is established to store the preset transfer rule information such as the platform layout of the station, the transfer channels between trains on different lines, and the transfer time limits. When receiving the train identity information transmitted by the platform signal receiving and processing module and the transfer-related information obtained by the information interaction module, these information are classified, sorted, and stored. Based on the information in the transfer rule database, a comprehensive analysis of the current train docking situation and transfer requirements at the platform is carried out. The optimal transfer path is determined through a multi-objective transfer path optimization formula, so as to determine the guiding scheme for the carriage position corresponding to each train and the guiding scheme for the platform and carriage of the transfer train. According to the remaining time until the train arrives, the number of passengers, and the target distance, the priority of the optical track display is dynamically adjusted using a dynamic optical track priority decision formula to ensure that passengers can quickly pay attention to the key guiding information, and these schemes are converted into corresponding optical track guiding instructions to provide accurate control signals for subsequent optical track displays.
[0015] Furthermore, the central control module determines the optimal transfer path through a multi-objective transfer path optimization formula, and its formula is: , where is the optimal transfer path, is the physical distance of the th segment in the path, is the estimated walking time of the th segment in the path, calculated based on the average walking speed of pedestrians and the path length, Indicates the congestion index of the nth segment in the path. The passenger flow density information is obtained through the passenger flow monitoring equipment installed at the station, and then the congestion index of each segment in the path is calculated. is the dynamically adjusted weight coefficient.
[0016] Furthermore, the central control module dynamically adjusts the priority of the light rail display using the dynamic light rail priority decision formula, and its formula is: , where is the light rail display priority value, is the remaining arrival time of the train in minutes, is the number of passengers expected to take this train, represents the distance between the current position and the target carriage in meters, is the weighting coefficient, which is adjusted according to the real-time situation of the station. The central control module combines the transfer rule database to analyze and calculate the received information and generate light rail guiding instructions.
[0017] Furthermore, the platform light rail display module automatically adjusts the light rail brightness according to the ambient light intensity, and its adjustment formula is: , where is the actual display brightness, is the basic brightness value, which is preset according to the performance of the light rail display device and the display effect in the standard environment. is the current ambient light intensity, is the reference light intensity, that is, the set reference value, is the brightness adjustment coefficient.
[0018] Compared with the prior art, the one-end light rail identification of the EMU - platform anti-misboarding dynamic guiding system has the following beneficial effects:
[0019] First, through the platform signal receiving and processing module, the present invention adopts advanced signal recognition technology and interference shielding technology, which can accurately identify the train light rail identification signal, thereby accurately obtaining the identity information of each train. Cooperating with the platform light rail display module to visually display the guiding information in different colors and display modes, it effectively avoids the misboarding situation of passengers in the complex scenario of multiple trains running in parallel, and ensures that passengers can accurately and quickly find the train they are taking and the transfer path.
[0020] Second, through the information interaction module, the present invention comprehensively obtains the relevant information of adjacent platforms and transfer trains on different lines, and combines the path planning algorithm of the central control module, which can provide accurate best transfer path guidance for transfer passengers. It not only greatly reduces the transfer time of passengers, but also significantly improves the transfer efficiency and overall travel experience of passengers.
[0021] Other advantages, objects, and features of the present invention will be set forth in part in the following description, and in part will be obvious to those skilled in the art upon examination of the following, or may be learned from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.
[0023] Figure 1 It is a flow operation diagram of an end optical rail identification - platform anti - wrong boarding dynamic guidance system for multiple unit trains;
[0024] Figure 2 It is a flow chart of an end optical rail identification - platform anti - wrong boarding dynamic guidance system for multiple unit trains. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0025] To further elaborate on the technical means and effects adopted by the present invention to achieve the intended invention purpose, the following, in combination with the accompanying drawings and preferred embodiments, details the specific embodiments, structures, features, and effects of the present invention as follows.
[0026] Embodiment 1
[0027] In a certain super - large comprehensive transportation hub, its internal structure is extremely complex, with a daily passenger flow of up to hundreds of thousands of person - times, and it is even more crowded during peak hours. This hub is a key node in the urban transportation system. Among them, the high - speed rail platform 10 is large - scale, with multiple ticket gates and a spacious waiting area, and many trains in different directions stop here every day, continuously transporting long - distance passengers. The platform C of Subway Line 2 is located on the second basement floor of the hub, and various convenient facilities such as vending machines and charging areas are set around it. Its daily passenger flow is also not to be underestimated, providing great convenience for the daily travel of urban residents.
[0028] During the daily operation of this hub, the information interaction module operates efficiently at all times. It is closely connected to the rail transit dispatching system and the station information management system through high - speed and stable communication lines, continuously obtaining various real - time information, and using the data integrity verification function mod CRC to ensure the accuracy of the information. Among them, represents the received train information segment, such as the expected arrival time, the platform to stop at, etc. Assign weights based on the importance of information, such as the weight of train arrival time Set to 0.6, the station information weight Set to 0.4, Take the prime number 101, CRC Calculated by the standard CRC-32 algorithm, if the check finds an error, it will immediately request retransmission. At the same time, the data priority scheduling model is used ( ) to sort the data, is a time urgency indicator, calculated based on the remaining arrival time of the train. The source credibility, the scheduling system data Set to 0.9, and other auxiliary system data to 0.7, is the usage frequency indicator, initially , , , and then dynamically adjust according to the importance of the data in actual operation, such as when the train is approaching the station, For example, when a train is about to arrive at Platform C of Metro Line 2, the information interaction module quickly captures the train number, accurate estimated arrival time, specific location of Platform C, and detailed carriage distribution and other key information. At the same time, at the end of the train that stops at Platform 10 of the high-speed railway, the train end optical track identification module uses a multi-dimensional information coding algorithm. ,in, is the generated train identity code, which is unique. is the digital representation of the train number, It is the timestamp value of the departure time, accurate to the minute. A number indicating the carriage number. The encryption keys for the train number, time and carriage number are respectively, XOR operation is used to combine information of different dimensions. The optical signal transmitting unit modulates the encoded information onto the optical signal using the optical signal intensity modulation equation. It is automatically updated every day. Modulate the encoded information onto the optical signal, According to the environment settings, the tunnel cd, open air environment cd, Set 0.5 to control the modulation depth. Hz to resist power frequency interference, and then the light track identification signal is sent to the platform through a high-brightness LED array and aspherical lens.
[0029] The platform signal receiving and processing module equipped on Platform 10 monitors the surrounding signal environment at all times. Once it receives the optical track identification signal sent by the train, it immediately starts a series of complex processing procedures. First, it uses a high-precision optoelectronic sensor to convert the optical signal into an electrical signal. Then, through the built-in signal recognition chip, it uses complex signal recognition technology to analyze the electrical signal. During this process, it also uses interference shielding technology to screen and filter the signal from multiple dimensions. For example, it excludes the interference of other trains' optical track identification signals through frequency analysis, and filters out the stray light interference in the external environment using the signal intensity threshold. After processing, it accurately obtains the identity information of the train and quickly transmits it to the central control module.
[0030] The central control module integrates the identity information of the high-speed train transmitted from the platform signal receiving and processing module and the subway train information obtained from the information interaction module. Subsequently, it classifies, organizes, and stores this information. Based on the information in the transfer rule database, it comprehensively analyzes the current platform train docking situation and transfer requirements, and determines the best transfer path through the multi-objective transfer path optimization formula. The formula is: , where is the optimal transfer path, is the physical distance of the th segment in the path, is the estimated walking time of the th segment in the path, represents the congestion degree index of the th segment in the path, is the dynamically adjusted weight coefficient, thereby determining the guiding scheme for the carriage position corresponding to each train and the guiding scheme for the transfer train platform and carriage. According to the remaining time until the train arrives, the number of passengers, and the target distance, it dynamically adjusts the priority of the optical track display using the dynamic optical track priority decision formula to ensure that passengers can quickly pay attention to the key guiding information. The formula is: , where is the optical track display priority value, is the remaining time until the train arrives, in minutes, is the number of passengers expected to take this train, represents the distance between the current position and the target carriage, in meters, is the weighting coefficient, adjusted according to the real-time situation of the station. The central control module combines the transfer rule database, analyzes and calculates the received information, generates optical track guiding instructions, converts these schemes into corresponding optical track guiding instructions, provides accurate control signals for the subsequent optical track display, and finally generates the guiding instruction for the carriage position of the high-speed train on this platform and the best path guiding instruction for taking the subway train from Platform 10 to Platform C.
[0031] After receiving the command from the central control module, the platform light track display module of platform 10 responds quickly. It displays the high-speed train carriage position guide light track in bright and eye-catching green to guide passengers getting off the train to quickly find the exit direction of their carriage. At the same time, it displays the transfer guide light track to the subway train platform C and the corresponding carriage in flashing purple, and automatically adjusts the light track brightness according to the ambient light intensity. The adjustment formula is: ,in, is the actual display brightness, is the basic brightness value, that is, the preset standard brightness, is the current ambient light intensity, is the reference light intensity, that is, the set benchmark value, It is the brightness adjustment coefficient, which guides passengers to find the corresponding car. At the same time, according to the best path planned by the guidance instructions, the LED light strips at the corresponding positions are lit up in turn to form a continuous and clear transfer guidance light track, which provides intuitive guidance for passengers. According to actual statistics, the transfer time of passengers is greatly reduced, and the average transfer time of each passenger is shortened by 10-15 minutes.
[0032] Embodiment 2
[0033] Large high-speed rail hub stations cover a vast area and have intricate internal structures. The daily passenger flow is as high as hundreds of thousands. Multiple high-speed rail lines intersect in the station, and trains of different directions and train numbers frequently stop and depart here, providing travel services for passengers traveling from all over the country.
[0034] During the daily operation of the hub, the information interaction module is always in an efficient operating state. With the help of high-speed and stable communication networks, it is closely connected with the rail transit dispatching system, station information management system, etc., and continuously collects various real-time information. For example, it obtains the train number of each platform, the precise estimated arrival time, the specific location of the platform, and detailed carriage distribution and other key information in real time. At the same time, the train-end light track identification module at the end of the trains parked at platforms 15, 16, and 17 is working in an orderly manner. The module uses the train identity coding algorithm to encrypt and integrate the identity information of each train, such as the train number, departure time, and carriage number, to generate a light track identification signal. Subsequently, these signals are sent to the corresponding platform at a specific frequency and intensity through high-brightness, long-range professional light-emitting equipment.
[0035] Platforms 15, 16, and 17 are respectively equipped with platform signal receiving and processing modules, which constantly monitor the surrounding signal environment. Once the optical track identification signal sent by the train is received, the processing process is immediately initiated. First, the high-precision optoelectronic sensor is used to accurately convert the optical signal into an electrical signal. Then, through the built-in high-performance signal recognition chip, complex signal recognition technology is used to deeply analyze the electrical signal. During this process, advanced interference shielding technology is also used to screen and filter the signal from multiple dimensions. For example, the interference of other trains' optical track identification signals is excluded through accurate frequency analysis, and stray light interference in the external environment is filtered out using the signal intensity threshold. After strict processing layer by layer, the identity information of each train is accurately obtained and quickly transmitted to the central control module.
[0036] The central control module integrates the train identity information transmitted from each platform signal receiving and processing module, as well as the comprehensive transfer information obtained from the information interaction module. Subsequently, calculations are carried out based on the transfer rules and path planning algorithms that are pre-set and verified and optimized through a large amount of actual data. During the calculation process, many factors such as the actual distance of different transfer paths, the estimated walking time, and the real-time congestion level are fully considered. Finally, the train carriage position guiding instructions for each platform and the best path guiding instructions for transfers between different platforms are generated.
[0037] After receiving the instructions transmitted from the central control module, the platform optical track display module of Platform 15 quickly responds. It conventionally displays the carriage position guiding optical track of the train parked at Platform 15 in bright and highly recognizable blue, helping the alighting passengers quickly find the exit direction of their own carriage. At the same time, it dynamically displays the best path guiding optical track to the transfer train at Platform 16 in flashing orange.
[0038] The platform optical track display module of Platform 16 also quickly responds to the instructions. It clearly displays the carriage position guiding optical track of the train parked at this platform in conventional yellow, and dynamically displays the best path guiding optical track to the transfer train at Platform 17 in flashing pink.
[0039] In this complex scenario of multi-train and multi-platform transfers, the present invention effectively avoids passengers from taking the wrong train due to getting lost, and greatly improves the transfer efficiency. According to actual statistics, the transfer time of each passenger is shortened by 10 - 15 minutes on average, effectively ensuring the efficient operation order of the station.
[0040] As described above, it is only the preferred embodiment of the present invention, and there is no limitation to the present invention in any form. Although the present invention has been disclosed as above with the preferred embodiment, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to equivalent embodiments with equivalent changes within the scope of the technical solution of the present invention. However, as long as it does not depart from the content of the technical solution of the present invention, any brief modifications, equivalent changes and modifications made to the above embodiments according to the technical essence of the present invention still fall within the scope of the technical solution of the present invention.
Claims
1. A dynamic guiding system for preventing misboarding at the platform with end light rail identification for multiple unit trains, characterized in that The system includes the following components: Information interaction module: Through a high-performance communication chip and multiple interfaces, a two-way data transmission mechanism is established to perform integrity verification and priority scheduling on the obtained train dispatching information, providing reliable data support for the system; Train-end optical track identification module: Collaborating with a signal encoding unit and an optical signal transmitting unit, the train number and departure time information are encoded by the signal encoding unit and modulated onto the optical signal by the optical signal transmitting unit, and then stably transmitted to the platform after optical processing for train identity recognition; Platform signal receiving and processing module: Using an optical signal receiving unit, a signal recognition unit, and an interference shielding unit, the received optical signal is converted, analyzed, and filtered for interference to accurately obtain the train identity information and transmit it to the central control module; Central control module: Based on a high-performance hardware platform and combined with a transfer rule database, the received train identity and transfer information are analyzed, and specific calculation logic is used to generate train car position guidance instructions and transfer path guidance instructions; Platform optical track display module: With an LED light strip as the main body, through a driving and control circuit, according to the instructions of the central control module, combined with environmental light and train status, the brightness and flashing mode of the optical track are adjusted to achieve boarding and transfer guidance; The central control module determines the optimal transfer path through the multi-objective transfer path optimization formula, and the formula is: , where is the optimal transfer path, is the physical distance of the th segment in the path, is the estimated walking time of the th segment in the path, represents the congestion degree index of the th segment in the path, is the dynamically adjusted weight coefficient; The central control module dynamically adjusts the priority of light rail display using a dynamic light rail priority decision formula, and the formula is as follows: , where is the light rail display priority value, is the remaining arrival time of the train, in minutes, is the number of passengers expected to take the train, represents the distance between the current position and the target carriage, in meters, is the weighting coefficient, which is adjusted according to the real-time situation of the station. The central control module combines the transfer rule database to analyze and calculate the received information and generate a light rail guidance instruction.
2. The dynamic guiding system for preventing misboarding at platform with light rail markings at the end of EMU according to claim 1, characterized in that, The information interaction module performs integrity verification and priority scheduling on the obtained train dispatching information. The integrity verification formula is as follows: , where is the data verification value, which is used to verify the integrity and accuracy of the received data, is the th data element in the data block, representing a train dispatching information segment, is the weight coefficient of the th data element, which is dynamically allocated according to the data importance, is the check modulus, which determines the range of the verification value, and is a prime number. CRC is the cyclic redundancy check value of the data block . Its priority scheduling formula is as follows: , where is the priority value of the th data, which determines the processing order, is the time urgency index of the data, which is calculated based on the train arrival time, is the source credibility index of the data, is the usage frequency index of the data, which reflects the importance of the data, is the weighting coefficient, which is obtained through historical data training, and .
3. The dynamic guiding system for preventing misboarding at the platform with the end light rail identification of the multiple unit train according to claim 1, wherein, The train-end optical track identification module mainly consists of a signal encoding unit and an optical signal transmitting unit. The signal encoding unit processes the train number, departure time, and carriage number information through a multi-dimensional information encoding algorithm. Its algorithm formula is: , where is the generated unique train identity code, is the numerical representation of the train number, is the timestamp value of the departure time, accurate to minutes, is the number representing the carriage number, are the encryption keys for the train number, time, and carriage number respectively, is the exclusive OR operation, used to combine information from different dimensions. The optical signal transmitting unit modulates the encoded information onto the optical signal using the optical signal intensity modulation equation. Its equation is: , where is the function of the modulated optical signal intensity changing with time, is the basic light intensity, which determines the visibility of the optical track, is the modulation depth, which controls the signal change amplitude, is the train identity code, is the carrier frequency, which determines the transmission characteristics of the signal. The emitted optical signal is collimated through an optical lens to control the emission angle and coverage range of the optical track identification signal, ensuring that the signal can be accurately and stably sent to the platform.
4. The dynamic guiding system for preventing misboarding at platform with end light rail identification of multiple unit trains according to claim 1, characterized in that, The platform signal receiving and processing module consists of an optical signal receiving unit, a signal recognition unit, and an interference shielding unit. The optical signal receiving unit uses a high-sensitivity photodetector to capture the weak optical signal emitted by the train-end optical track identification module and convert it into an electrical signal. The signal recognition unit processes the converted electrical signal, extracts the train identity information carried therein by analyzing the waveform, frequency, and amplitude characteristics of the electrical signal, and the signal recognition unit sets up a multiple feature comparison mechanism to verify and confirm the extracted information multiple times. The interference shielding unit uses a combination of a shielding cover and a filter circuit. The shielding cover can block the influence of external electromagnetic interference on the module, and the filter circuit can filter out interference signals with frequencies close to the optical track identification signal. By selectively filtering signals of different frequencies, only train optical track identification signals within a specific frequency range are allowed to pass, so as to accurately obtain the identity information of each train and transmit it to the central control module.
5. The dynamic guiding system for preventing misboarding at platform with end light rail identification of multiple unit train according to claim 1, wherein, The central control module constructs a hardware platform based on a central processor and a storage unit. At the software level, a transfer rule database is established to store the preset transfer rule information of the platform layout of the station, the transfer channels between trains on different lines, and the transfer time limit. When receiving the train identity information transmitted by the platform signal reception and processing module and the transfer-related information obtained by the information interaction module, it classifies, organizes, and stores this information. Based on the information in the transfer rule database, it comprehensively analyzes the current train docking situation and transfer requirements on the platform, determines the optimal transfer path through a multi-objective transfer path optimization formula, thereby determining the carriage position guidance plan corresponding to each train and the guidance plan for the platform and carriage of the transfer train. According to the remaining time until the train arrives, the number of passengers, and the target distance, it dynamically adjusts the priority of the light rail display using a dynamic light rail priority decision formula to ensure that passengers can quickly pay attention to the key guidance information, converts these plans into corresponding light rail guidance instructions, and provides accurate control signals for subsequent light rail displays.
6. The dynamic guiding system for preventing misboarding at platform with light rail identification at the end of multiple unit train according to claim 1, characterized in that The platform light rail display module uses an LED light strip as the core display component. The LED light strip is laid out according to the layout and guidance requirements of the platform and can form light rail paths of different shapes and directions. A drive circuit and a control circuit are set inside the module. The drive circuit provides drive current and voltage for the LED light strip according to the light rail guidance instructions issued by the central control module, controls the brightness and color of the LED light strip, and the control circuit is responsible for implementing different display modes. The drive circuit controls the LED light strip to continuously light up in a normal color. For trains that need to transfer, the control circuit makes the LED light strip flash in a special color according to a specific logic and automatically adjusts the light rail brightness according to the ambient light intensity to guide passengers to find the corresponding carriage. At the same time, according to the optimal path planned by the guidance instructions, it sequentially lights up the LED light strips at the corresponding positions to form a continuous and clear transfer guidance light rail, intuitively providing guidance for passengers.
7. A dynamic guiding system for preventing misboarding at the platform with the light rail identification at the end of the multiple unit train according to claim 1, characterized in that The platform light rail display module automatically adjusts the light rail brightness according to the ambient light intensity, and its adjustment formula is: , where is the actual display brightness, is the basic brightness value. The basic brightness value is preset according to the performance of the light rail display device and the display effect under standard environment, is the current ambient light intensity, is the reference light intensity, that is, the set reference value, is the brightness adjustment coefficient.
Citation Information
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