Seat information display system and motor train unit

Abstract

The embodiment of the utility model provides a seat information display system and a motor train unit, and relates to the technical field of rail transportation. The system comprises a seat information access point module, a seat display gateway module and a seat information display module, wherein the seat information display module comprises a display control unit, a display power supply filtering protection unit and an illumination display unit; the seat information access point module is electrically connected with the seat display gateway module; the seat display gateway module is electrically connected with the display control unit; the display power supply filtering protection unit is electrically connected with the display control unit and the illumination display unit; wherein the display power supply filtering protection unit is used for filtering interference electric signals and supplying power to the illumination display unit. The stability and reliability of the seat information display system can be improved, and the display quality is improved.

Description

Technical Field

[0001] The present application relates to the field of rail transportation technology, and in particular to a seat information display system and an EMU. Background Art

[0002] Seat information display systems are used in public transportation to provide passengers with seat information. They are widely used in rail vehicles (such as EMUs, subways, and light rail). Currently, these systems suffer from poor display quality. For example, EMUs encounter various electromagnetic interferences during operation, such as interference from high-voltage contact lines or natural environmental factors like thunderstorms. These factors can damage the circuits in the seat information display system, making the display unstable and impacting the passenger experience.

[0003] Therefore, how to improve the display quality of the seat information display system has become a technical problem that needs to be solved urgently. Utility Model Content

[0004] The main purpose of the embodiments of the present application is to provide a seat information display system and an EMU, which are intended to display seat information in real time and improve the display quality of the seat information display system.

[0005] To achieve the above-mentioned objectives, a first aspect of an embodiment of the present application provides a seat information display system, the system comprising a seat information access point module, a seat display gateway module, and a seat information display module, the seat information display module comprising a display control unit, a display power supply filtering and protection unit, and a lighting display unit:

[0006] The seat information access point module is electrically connected to the seat display gateway module;

[0007] The seat display gateway module is electrically connected to the display control unit;

[0008] The display power supply filtering and protection unit is electrically connected to the display control unit and the lighting display unit;

[0009] The display power supply filtering and protection unit is used to filter out interfering electrical signals and supply power to the lighting display unit.

[0010] In some embodiments, the display power supply filtering and protection unit includes a first surge and pulse protection unit, a filtering and anti-interference unit, an anti-reverse connection unit, and a filtering loop unit;

[0011] The display control unit is electrically connected to the first surge protection and pulse protection unit;

[0012] The first surge and pulse protection unit, the filtering and anti-interference unit, the anti-reverse connection unit, and the filtering circuit unit are electrically connected in sequence;

[0013] The filter circuit unit is electrically connected to the lighting display unit;

[0014] Among them, the first surge and pulse protection unit is used to short-circuit the surge or pulse signal to the ground, the filtering anti-interference unit and the filtering loop unit are used to filter out ripple interference signals, and the anti-reverse connection unit is used to ensure unidirectional current flow.

[0015] In some embodiments, the first surge and pulse protection unit includes a first fuse and a clamping diode, the filtering and anti-interference unit includes a first inductor, a first capacitor and a second capacitor, the anti-reverse connection unit includes an anti-reverse connection diode, and the filtering circuit unit includes at least two first filtering capacitors;

[0016] The first fuse is electrically connected to the clamping diode and the first inductor, and the clamping diode is grounded;

[0017] The first inductor is electrically connected to the first capacitor, the second capacitor and the anti-reverse connection diode;

[0018] The anti-reverse connection diode is electrically connected to at least two of the first filter capacitors, and any two of the first filter capacitors are connected in parallel.

[0019] In some embodiments, the lighting display unit includes a seat row number display unit and a ticket status display unit;

[0020] The seat number display unit includes at least two LED lamp beads and a fixing plate, and at least two LED lamp beads are evenly arranged on the fixing plate; each of the LED lamp beads is electrically connected to the display power filter protection unit;

[0021] The ticketing status display unit is electrically connected to the display power filter protection unit;

[0022] Wherein, the ticket status display unit is used to display the lighting status corresponding to the ticket information.

[0023] In some embodiments, the lighting display unit further includes a display lens and a light homogenizing plate;

[0024] The display lens is fitted with the light-distributing plate, and there is a spacing distance between the display lens and each of the LED lamp beads;

[0025] Seat information is printed on the surface of the display lens and the lens area corresponding to the seat number display unit, and the light averaging plate is used to average the light emitted by each of the LED lamp beads.

[0026] In some embodiments, the spacing distance between the display lens and each of the LED lamp beads ranges from 4 to 6 mm.

[0027] In some embodiments, the seat information access point module comprises an access point mainboard chip and an access point power filtering protection unit.

[0028] The access point power filtering protection unit comprises a second surge and pulse protection unit, a first common mode filtering unit, and a second differential mode filtering unit.

[0029] The second surge and pulse protection unit, the first common mode filtering unit, and the second differential mode filtering unit are electrically connected in sequence.

[0030] The second differential mode filtering unit is electrically connected to the access point mainboard chip.

[0031] The second surge and pulse protection unit is used to short-circuit surge or pulse signals to the ground, the first common mode filtering unit is used to filter common mode ripple interference signals, and the second differential mode filtering unit is used to filter differential mode ripple interference signals to supply power to the access point mainboard chip.

[0032] In some embodiments, the second surge and pulse protection unit comprises a second fuse, a first voltage-dependent resistor, a thermistor, and a rectifier diode, the first common mode filtering unit comprises a first common mode inductor and a third capacitor, and the second differential mode filtering unit comprises a second common mode inductor and a fourth capacitor.

[0033] The second fuse is electrically connected to the first voltage-dependent resistor and the thermistor, the thermistor is electrically connected to the rectifier diode, the rectifier diode is electrically connected to the first common mode inductor, and the first common mode inductor, the third capacitor, the second common mode inductor are all connected in parallel with the fourth capacitor.

[0034] In some embodiments, the seat display gateway module comprises a gateway control chip and a gateway power filtering protection unit.

[0035] The gateway power filtering protection unit is electrically connected to the gateway control chip, and the gateway power filtering protection unit is used to filter ripple interference signals and supply power to the gateway control chip.

[0036] The gateway power filtering protection unit comprises a third fuse, a fourth fuse, a lightning protection tube, a second voltage-dependent resistor, a fifth capacitor, a sixth capacitor, a first MOS tube, a voltage stabilizing diode, a third common mode inductor, a seventh capacitor, a fourth common mode inductor, and an eighth capacitor.

[0037] The third fuse is electrically connected to the fourth fuse, the lightning protection tube and the fifth capacitor, the lightning protection tube is electrically connected to the second varistor, the second varistor is electrically connected to the sixth capacitor and the first MOS tube, the first MOS tube is electrically connected to the voltage-stabilizing diode, the voltage-stabilizing diode is electrically connected to the third common-mode inductor, and the third common-mode inductor, the seventh capacitor and the fourth common-mode inductor are all connected in parallel with the eighth capacitor.

[0038] To achieve the above-mentioned purpose, a second aspect of an embodiment of the present application proposes an EMU, which includes a carriage, and the carriage is provided with the system described in the above-mentioned first aspect.

[0039] The seat information display system and EMU proposed in this application filter out interfering electrical signals through a display power supply filtering protection unit, provide a stable power supply for the lighting display unit, avoid interference to the seat information display system, and ensure that the system can operate stably in various electromagnetic environments (such as the environment during the operation of the EMU), thereby improving the stability and reliability of the seat information display system and thus improving the display quality of the seat information display system. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 This is a module block diagram of the seat information display system provided by an embodiment of the present application;

[0041] Figure 2 This is a system topology diagram of the seat information display system provided by an embodiment of the present application.

[0042] Figure 3 This is a circuit schematic diagram of a display power supply filtering protection unit provided in one embodiment of the present application;

[0043] Figure 4 This is a module block diagram of a seat information display module provided in one embodiment of the present application;

[0044] Figure 5 This is a schematic diagram of a specific implementation of a seat information display module provided in one embodiment of the present application;

[0045] Figure 6 This is a structural diagram of a seat information display module provided in one embodiment of the present application;

[0046] Figure 7 This is a circuit diagram of an access point power supply filtering and protection unit provided in one embodiment of the present application;

[0047] Figure 8 This is a circuit schematic diagram of a gateway power supply filtering protection unit provided in one embodiment of the present application.

[0048] Reference numerals: 100, seat information access point module; 200, seat display gateway module; 300, seat information display module; 110, second surge and pulse protection unit; 120, first common mode filter unit; 130, second differential mode filter unit; 310, display control unit; 320, display power supply filter protection unit; 330, lighting display unit; 321, first surge and pulse protection unit; 322, filter and anti-interference unit; 323, anti-reverse connection unit; 324, filter circuit unit; 331, seat number display unit; 332, ticket sales status display unit;

[0049] First fuse F1; clamping diode TVS1; first inductor L1; first capacitor C1; second capacitor C2; anti-reverse polarity diode D1; second fuse F2; first varistor RV1; thermistor PCT1; rectifier diode D2; first common-mode inductor LC1; third capacitor C3; second common-mode inductor LC2; fourth capacitor C4; third fuse F3; fourth fuse F4; lightning arrester FR1; second varistor RV2; fifth capacitor C5; sixth capacitor C6; first MOS transistor Q1; voltage regulator diode D3; third common-mode inductor LC3; seventh capacitor C7; fourth common-mode inductor LC4; eighth capacitor C8. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0051] It should be noted that although the device schematics illustrate functional module divisions and the flowcharts illustrate logical sequences, in certain circumstances, the steps shown or described may be performed in a sequence that differs from the module divisions in the device or the sequence in the flowcharts. The terms "first," "second," and so on, in the specification, claims, and drawings, are used to distinguish similar items and are not necessarily used to describe a specific sequence or precedence.

[0052] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used herein are for the purpose of describing the embodiments of this application only and are not intended to limit this application.

[0053] First, let’s analyze some of the terms used in this application:

[0054] EMU (High-Speed ​​Train): also known as EMU train, is a type of modern train, consisting of several powered vehicles (EMU) and non-powered carriages (non-powered carriages).

[0055] The Passenger Information System (PIS) is a service system used in rail transit vehicles (such as subways and light rail) that provides passengers with train operation information. The PIS typically stores information such as train arrival and departure times, and vehicle operating status.

[0056] Transient Voltage Suppressor (TVS diode): Transient voltage suppressor diode, also known as clamping diode, is mainly used to absorb surge voltage and transient voltage in the circuit to protect electronic components from damage by high-energy pulses.

[0057] A reverse polarity diode, also known as an anti-reverse diode, is an electronic component used to prevent reverse current flow in a circuit. When the current in a circuit is in the wrong direction, the anti-reverse diode can stop the current from flowing, thereby improving the circuit's safety.

[0058] GSM-R (Global System for Mobile Communications-Railway) is a digital wireless communication system built on GSM (Global System for Mobile Communications) technology and specifically used for railway communications.

[0059] Screen printing, also known as silk screen printing, is a porous printing method. In screen printing, ink is transferred through the mesh of a screen printing plate. The mesh allows the ink to pass through the image area, while the non-image area is impermeable, thus achieving printing. Silk screen printing can be used on a variety of materials, including plastic, metal, and glass. For example, a specific text or pattern can be printed on the surface of a lens.

[0060] The seat information display system and EMU provided in the embodiments of the present application are specifically illustrated through the following embodiments. First, the seat information display system in the embodiments of the present application is described.

[0061] It should be noted that in each specific embodiment of the present application, when it comes to the need to perform relevant processing based on data related to the user's identity or characteristics, such as user information, user behavior data, user historical data, and user location information, the user's permission or consent will be obtained first, and the collection, use, and processing of such data will comply with relevant laws, regulations, and standards. In addition, when the embodiment of the present application needs to obtain the user's sensitive personal information, the user's separate permission or consent will be obtained through a pop-up window or by jumping to a confirmation page. After clearly obtaining the user's separate permission or consent, the necessary user-related data for the normal operation of the embodiment of the present application will be obtained.

[0062] Figure 1 This is an optional module block diagram of the seat information display system provided in an embodiment of the present application. The seat information display system includes a seat information access point module 100, a seat display gateway module 200, and a seat information display module 300. The seat information display module 300 includes a display control unit 310, a display power supply filtering and protection unit 320, and a lighting display unit 330.

[0063] The seat information access point module 100 is electrically connected to the seat display gateway module 200;

[0064] The seat display gateway module 200 is electrically connected to the display control unit 310;

[0065] The display power supply filtering and protection unit 320 is electrically connected to the display control unit 310 and the lighting display unit 330;

[0066] The display power supply filtering and protection unit 320 is used to filter out interfering electrical signals and provide power to the lighting display unit 330 .

[0067] The beneficial effects of the embodiments of the present application include but are not limited to: filtering out interfering electrical signals through the display power supply filtering protection unit 320, providing a stable power supply for the lighting display unit 330, avoiding interference to the seat information display system, ensuring that the system can operate stably in various electromagnetic environments (such as the environment during the operation of the EMU), improving the stability and reliability of the seat information display system, and thus improving the display quality of the seat information display system.

[0068] It should be noted that the seat information access point module 100 is used to obtain ticket information, for example, from the PIS system (onboard passenger information system). The seat display gateway module 200 is used to send the ticket information to the seat information display module 300. Specifically, the ticket information may include one or more of the following: seat number, seat status (e.g., sold, unsold), time, train information (e.g., train number), car information, station information, upcoming stops, a list of stops corresponding to the current train, etc.

[0069] like Figure 2 As shown, in some embodiments, the seat information display system further includes an antenna, such as a 3G / 4G antenna. In one embodiment, the antenna is communicatively connected to a ground base station, and requests the PI S system via Ethernet to obtain ticket information for the stations that the current train passes through on that day. In another embodiment, the antenna can obtain ticket information from a ground ticket information server. Ticket information can also be obtained in other ways, not limited to these. At the same time, the seat information access point module 100 sends the ticket information to the seat display gateway module 200 of each carriage via the Ethernet bus. In another embodiment, as Figure 2 As shown, each carriage is provided with a seat display gateway module 200. For example, if there are three carriages, there are three seat display gateway modules 200. Each seat display gateway module 200 is connected to at least two seat information display modules 300, and each seat information display module 300 corresponds to one seat. The seat display gateway module 200 is used to send the ticket information to the seat information display module 300 corresponding to the seat according to the seat corresponding to the ticket information, so that the information of each seat can be displayed in a targeted manner. It should be noted that the seat display gateway module 200 and the seat information display module 300 can be connected by RS485 bus communication.

[0070] In some embodiments, it should be noted that the current seat information display system cannot display passenger boarding information. For example, the current seat information display system only displays the seat number and cannot reflect whether the seat has been reserved by the passenger, such as whether the seat has been sold. Taking the above problems into consideration, the seat information display system of the embodiment of the present application also includes: a route station judgment module, which is communicatively connected to the seat information access point module 100, and the route station judgment module is used to judge whether the EMU has arrived at the station. When the EMU arrives at the station, the seat information access point module 100 obtains the ticket information at the current moment, so that the display control unit 310 can update the display status of the lighting display unit 330 according to the above ticket information, thereby achieving accurate and timely updating of the display status corresponding to the ticket information, so that the lighting display unit 330 of each seat can display the status of the seat in real time, such as whether the ticket for the seat has been sold within a specific time period. In summary, the embodiment of the present application not only improves the display quality of the seat information display system, but also can display seat information in real time.

[0071] In some embodiments, the seat information access point module 100 has a network upgrade and maintenance function, allowing it to upgrade and maintain its own applications and download logs through a network interface. The seat information access point module 100 can store logs for a period of time, such as 15 days, which can be used to record device startup status, network connection status, upgrade and maintenance information, etc.

[0072] See also Figure 2 and Figure 3 In some embodiments, the display power supply filtering and protection unit 320 includes a first surge and pulse protection unit 321 , a filtering and anti-interference unit 322 , an anti-reverse connection unit 323 , and a filtering circuit unit 324 ;

[0073] The display control unit 310 is electrically connected to the first surge and pulse protection unit 321;

[0074] The first surge and pulse protection unit 321, the filtering and anti-interference unit 322, the anti-reverse connection unit 323, and the filtering circuit unit 324 are electrically connected in sequence;

[0075] The filter circuit unit 324 is electrically connected to the lighting display unit 330;

[0076] Among them, the first surge and pulse protection unit 321 is used to short-circuit the surge or pulse signal to the ground, the filtering and anti-interference unit 322 and the filtering loop unit 324 are used to filter out the ripple interference signal, and the anti-reverse connection unit 323 is used to ensure the unidirectional flow of current.

[0077] The advantage of this embodiment is that the display power supply filtering protection unit 320 is formed by the first surge and pulse protection unit 321, the filtering and anti-interference unit 322, the anti-reverse connection unit 323 and the filtering circuit unit 324, which can prevent surge signals or strong pulse signals from damaging the lighting display unit 330, thereby realizing the power supply filtering protection function of the seat information display system.

[0078] See also Figure 3 In some embodiments, the first surge and pulse protection unit 321 includes a first fuse F1 and a clamping diode TVS1, the filtering and anti-interference unit 322 includes a first inductor L1, a first capacitor C1 and a second capacitor C2, the anti-reverse connection unit 323 includes an anti-reverse connection diode D1, and the filtering circuit unit 324 includes at least two first filter capacitors;

[0079] The first fuse F1 is electrically connected to the clamping diode TVS1 and the first inductor L1, and the clamping diode TVS1 is grounded;

[0080] The first inductor L1 is electrically connected to the first capacitor C1, the second capacitor C2 and the anti-reverse connection diode D1;

[0081] The anti-reverse connection diode D1 is electrically connected to at least two first filter capacitors, and any two first filter capacitors are connected in parallel.

[0082] The embodiment has the advantages that the first anti-surge and pulse unit 321 is composed of the first fuse F1 and the clamping diode TVS1, so as to short-circuit the surge or strong pulse signal to the ground. The filter anti-interference unit 322 is composed of the first inductor L1, the first capacitor C1 and the second capacitor C2, so as to filter out the ripple interference signal. The anti-reverse connection unit 323 is composed of the anti-reverse connection diode D1, so as to ensure the unidirectional flow of the current. The filter loop unit 324 is composed of at least two first filter capacitors, so as to further filter out the ripple interference signal of the current passing through the anti-reverse connection diode D1, realize the anti-electromagnetic interference function of the seat information display module 300, ensure that the seat information display system meets the electromagnetic compatibility requirement, and improve the display quality of the seat information display system.

[0083] It should be noted that, in Figure 3 VIN_24V represents the voltage input by the display control unit 310. VCC_+24V represents the output 24V voltage, and VCC_10V represents the output 10V voltage, both of which can be used to connect the lighting display unit 330. The output voltage of the display control unit 310 can also be set and adjusted according to the requirements, such as 9.5V, which is not limited in the embodiment of the application. The filter loop unit 324 includes capacitors C55, C57, C66, C67, C11, C15 and C10. The display power filter protection unit 320 can also include other diodes, capacitors and resistors, which are not limited.

[0084] Please refer to Figure 4 In some embodiments, the lighting display unit 330 includes a seat row number display unit 331 and a ticket selling state display unit 332.

[0085] The seat row number display unit 331 includes at least two LED lamp beads and a fixed plate, and the at least two LED lamp beads are evenly arranged on the fixed plate. Each LED lamp bead is electrically connected to the display power filter protection unit 320.

[0086] The ticket selling state display unit 332 is electrically connected to the display power filter protection unit 320.

[0087] The ticket selling state display unit 332 is used to display the light state corresponding to the ticket selling information.

[0088] The embodiment has the advantages that by evenly arranging the LED lamp beads on the fixed plate, the heat dissipation area is increased, and the problem of brightness attenuation caused by heating of the LED lamp beads is avoided, so as to prolong the service life of the lighting display unit 330 and improve the display quality.

[0089] It is understandable that the fixed plate and the LED lamp beads on it together constitute the backlight source. The seat information displays in current EMUs will dim after a period of use. The reason is generally due to the high heat generated by the integrated backlight source used in the seat information displays (such as the side-emitting LED light guide plate). For example, the number of LED lamp beads in current seat information displays is relatively small (for example, 10), which generates high heat in high brightness mode, ages quickly, and will experience brightness decay with long-term use.

[0090] In an embodiment of the present application, considering the high heat generation of the integrated backlight source, the individual LED lamp beads are evenly arranged on the fixed plate. This planar layout of the LED lamp beads increases the heat dissipation area, thereby preventing brightness decay in the seat number display unit 331, further improving the display quality of the seat information display system and extending its service life. In another embodiment, the number of LED lamp beads can also be set to a preset number, such as 42. By increasing the number of LED lamp beads, the load of each LED lamp bead is reduced, and the load of each LED lamp bead is effectively balanced, avoiding the situation where some lamp beads overheat while others are underworking, reducing the concentrated generation of heat, and reducing overall heat dissipation to avoid the problem of brightness decay caused by heating and aging of the LED lamp beads, thereby increasing the brightness of the seat information display. It can be seen that the embodiment of the present application improves the display quality of the seat information display system by balancing the load of the LED lamp beads and / or increasing the heat dissipation area. It can be understood that balancing the load of each LED lamp bead means that at least one of the current, voltage, and power of each lamp bead is equal.

[0091] It is understood that the display control unit 310 can independently control the seat row number display unit 331 and the ticket status display unit 332. By independently controlling each of the above display units, the flexibility and universality of the seat information display module 300 are improved.

[0092] See also Figure 5In some embodiments, the blue background area represents the seat row number display unit 331 and its corresponding display lens area; the black background area represents the ticket status display unit 332 and its corresponding display lens area. The LEDs in the seat row number display unit 331 are white LEDs to provide white backlighting. The ticket status display unit 332 includes three different colored LEDs, each corresponding to a ticket status reflected by the ticket information. For example, the ticket status display unit 332 includes a red LED, a yellow LED, and a green LED. The red LED indicates sold, the yellow LED indicates pre-sold, and the green LED indicates unsold. It should be understood that if the ticket information indicates that the seat has been sold and the train has arrived at or departed from the passenger's boarding station, the ticket status is sold, indicating that the passenger has purchased the ticket and boarded the train. If the ticket information indicates that the seat has been sold and the train has not yet arrived at the passenger's boarding station, the ticket status is pre-sold, indicating that the passenger has purchased the ticket but has not boarded the train. Different colors of light indicate different ticketing statuses, and the corresponding relationship is clear, which avoids misunderstandings by passengers and improves the intuitiveness of the ticketing status display unit 332. It is understood that one or more LED lamp beads of the same color can be provided, for example, four red LEDs are provided, and this embodiment of the application is not limited to this.

[0093] See also Figure 6In some embodiments, in the seat information display module 300, the display control unit 310 can be a control chip, specifically an STM32F103 control chip. There can be two display power supply filtering and protection units 320, each for converting 24V DC power to 9.5V DC power to power the LED lamp beads. One display power supply filtering and protection unit 320 is electrically connected to the seat row number display unit 331, and the other display power supply filtering and protection unit 320 is electrically connected to the ticket status display unit 332, which is the three-color LED shown in the figure, such as the red, yellow, and green LEDs mentioned above. The seat information display module 300 may also include a voltage conversion circuit and a digital dial switch. Both the voltage conversion circuit and the digital dial switch are electrically connected to the display control unit 310. The voltage conversion circuit is used to convert 24V DC power to 5V DC power to power the display control unit 310. The display control unit 310 sets the seat ID via the digital dial switch and receives ticket information via the RS485 chip. The display control unit 310 controls the ticket status display unit 332 to display the ticket status based on the ticket information corresponding to the seat ID. Furthermore, the display control unit 310 can adjust the supply voltage of the LED lamps by outputting PWM (pulse width modulation) signals with different duty cycles, thereby adjusting the brightness of the seat row display unit 331 and / or the ticket status display unit 332 to suit the train's environmental requirements. For example, 10 brightness levels can be set. The brightness value corresponding to the brightness level 1 is 434cd / ㎡ (candela per square meter), the brightness value corresponding to the brightness level 2 is 736cd / ㎡, the brightness value corresponding to the brightness level 3 is 937cd / ㎡, the brightness value corresponding to the brightness level 4 is 1090cd / ㎡, the brightness value corresponding to the brightness level 5 is 1220cd / ㎡, the brightness value corresponding to the brightness level 6 is 1323cd / ㎡, the brightness value corresponding to the brightness level 7 is 1443cd / ㎡, the brightness value corresponding to the brightness level 8 is 1554cd / ㎡, the brightness value corresponding to the brightness level 9 is 1674cd / ㎡, and the brightness value corresponding to the brightness level 10 is 1778cd / ㎡. Specifically, the brightness of the LED lamp beads can be measured multiple times using a illuminometer, and the average value of the multiple measurements can be calculated and rounded off to obtain the above brightness value. Alternatively, the brightness value and its corresponding brightness level can be set according to demand.

[0094] In some embodiments, the lighting display unit 330 further includes a display lens and a light averaging plate (not shown in the figure);

[0095] The display lens is fitted with the diffuser, and there is a distance between the display lens and each LED lamp bead;

[0096] The surface of the lens area corresponding to the display lens and the seat number display unit 331 is printed with seat information, and the light-homogenizing plate is used to homogenize the light emitted by each LED lamp bead.

[0097] The advantage of this embodiment is that, in order to address the problem of uneven brightness of the lighting display unit 330, a light-emitting plate is used to evenly distribute the light emitted by each LED lamp bead, converting the point light source into a uniform surface light source, ensuring that each part of the display lens can be evenly illuminated, and can display seat information and ticket status more clearly, thereby improving the display quality of the lighting display unit 330 and enhancing the visual comfort of passengers.

[0098] Specifically, the seat information printed on the display lens may include the seat sequence number (such as rows 1 to 17), seat number (A, B, C, D or F), and window position. Figure 5 As shown, the seat information indicates row 12, and seat A is by the window.

[0099] It is understandable that due to the use of multiple LED lamp beads in a planar layout and the fact that the distance between the LED lamp beads and the display lens is usually close, the scattering angle of the light emitted by the LED lamp beads is small, and light spots or shadows may appear, resulting in uneven brightness. For example, passengers may see the projections of individual LED lamp beads on the display lens, affecting the display effect. To address the problem of uneven brightness, the embodiment of the present application uses a light-distributing plate to distribute the light, so that the light from the LED lamp beads is transmitted through the light-distributing plate, ensuring that there are no light spots under visual conditions on the lighting display unit 330, thereby improving the display effect of the lighting display unit 330.

[0100] In some embodiments, the display lens is parallel to the fixing plate so that the distance between each LED lamp bead on the fixing plate and the display lens is the same, so that the light of each LED lamp bead can be evenly transmitted through the display lens and the light-distributing plate, thereby improving the light-distributing effect.

[0101] It's understandable that there's also a distance between the diffuser and each LED. Since the display lens fits snugly against the diffuser, and both are relatively thin, the distance between the display lens and the LED can be roughly considered the same as the distance between the diffuser and the LED. Diffusers with different scattering effects can be replaced to accommodate different distances.

[0102] It is understandable that the seat information can be printed on the surface of the display lens by silk screen printing.

[0103] In some embodiments, the display lens can be a PC (Po lycarbonate, polycarbonate) lens. The PC lens is a lens of thermoplastic material. The PC lens is light in weight and has good impact resistance and is not easy to break. It can be understood that the display lens is prone to be bumped, which makes it difficult for the display lens to clearly display information. For example, on a motor train or other public transport, the lighting display unit 330 is usually installed above the seat or on the wall beside the luggage rack to facilitate passengers to view the seat information on the display lens of the lighting display unit 330. However, as passengers need to place luggage on the luggage rack, the display lens may be bumped, causing damage to the display lens. In view of the above problems, the PC lens with good impact resistance is used as the display lens, which can effectively prevent the display lens from being scratched or damaged, and improve the safety and reliability of the lighting display unit 330. In another embodiment, the PC lens can be windowed to make its surface smoother and more transparent, improve the light transmittance of the PC lens, and make the light of the LED lamp beads uniformly pass through the PC lens, avoiding the generation of light spots and shadows, and further improving the display quality of the lighting display unit 330.

[0104] In some embodiments, the spacing distance between the display lens and each LED lamp bead is in the range of 4 to 6 millimeters.

[0105] The advantage of this embodiment is that the spacing distance between the display lens and each LED lamp bead is set to 4 to 6 millimeters to ensure that the light uniformizing plate has a better light uniformizing effect on the LED lamp beads.

[0106] Specifically, the spacing distance between the display lens and each LED lamp bead can be 8 millimeters (mm).

[0107] Please refer to Figure 1 and Figure 7 In some embodiments, the seat information access point module 100 includes an access point mainboard chip (not shown in the figure) and an access point power filtering protection unit (not shown in the figure);

[0108] The access point power filtering protection unit includes a second anti-surge and pulse unit 110, a first common mode filter unit 120, and a second differential mode filter unit 130;

[0109] The second anti-surge and pulse unit 110, the first common mode filter unit 120, and the second differential mode filter unit 130 are electrically connected in sequence;

[0110] The second differential mode filter unit 130 is electrically connected to the access point mainboard chip;

[0111] The second surge and pulse protection unit 110 is used to short-circuit surge or pulse signals to ground, the first-level common-mode filter unit 120 is used to filter out common-mode ripple interference signals, and the second-level differential-mode filter unit 130 is used to filter out differential-mode ripple interference signals to supply power to the access point motherboard chip.

[0112] The advantage of this embodiment is that the surge or pulse signal is short-circuited to the ground through the second surge and pulse protection unit 110, the common-mode ripple interference signal is filtered out through the first-level common-mode filter unit 120, and the differential-mode ripple interference signal is filtered out through the second-level differential-mode filter unit 130, thereby providing a stable power supply to the access point motherboard chip and improving the stability and reliability of the seat information display system.

[0113] See also Figure 7 In some embodiments, the second surge and pulse protection unit 110 includes a second fuse F2, a first varistor RV1, a thermistor PCT1, and a rectifier diode D2; the first common-mode filter unit 120 includes a first common-mode inductor LC1 and a third capacitor C3; and the second differential-mode filter unit 130 includes a second common-mode inductor LC2 and a fourth capacitor C4.

[0114] The second fuse F2 is electrically connected to the first varistor RV1 and the thermistor PCT1, the thermistor PCT1 is electrically connected to the rectifier diode D2, the rectifier diode D2 is electrically connected to the first common-mode inductor LC1, and the first common-mode inductor LC1, the third capacitor C3, and the second common-mode inductor LC2 are all connected in parallel with the fourth capacitor C4.

[0115] The advantage of this embodiment is that the second surge and pulse protection unit 110, consisting of the second fuse F2, the first varistor RV1, the thermistor PCT1, and the rectifier diode D2, short-circuits surge or strong pulse signals to ground. The remaining relatively weak pulse current is further weakened by the thermistor PCT1 before entering the rectifier diode D2. The first common-mode inductor LC1 and the third capacitor C3 form the first common-mode filter unit 120, which filters out common-mode ripple interference signals in the circuit. The second common-mode inductor LC2 and the fourth capacitor C4 form the second differential-mode filter unit 130, which filters out differential-mode ripple interference signals in the circuit. This implements the electromagnetic interference protection function of the seat information access point module 100, further improving the display quality of the seat information display system.

[0116] It should be noted that in Figure 7In the embodiment, the interface J1 represents a first input voltage interface for connecting an input power supply, such as an input voltage of 110V can be obtained. The access point power supply filtering protection unit can further include a voltage conversion chip U7, such as converting the voltage to 12V. VCC_12V represents an output voltage interface of the access point power supply filtering protection unit, for outputting a voltage of 12V to supply power to the access point mainboard chip. The access point power supply filtering protection unit can further include other electronic elements such as capacitors and resistors, without limitation.

[0117] Please refer to Figure 8 In some embodiments, the seat display gateway module 200 includes a gateway control chip (not shown in the figure) and a gateway power supply filtering protection unit (not shown in the figure);

[0118] The gateway power supply filtering protection unit is electrically connected to the gateway control chip, and is used to filter out ripple interference signals and supply power to the gateway control chip;

[0119] The gateway power supply filtering protection unit includes a third fuse F3, a fourth fuse F4, a lightning protection tube FR1, a second voltage-dependent resistor RV2, a fifth capacitor C5, a sixth capacitor C6, a first MOS tube Q1, a voltage stabilizing diode D3, a third common mode inductor LC3, a seventh capacitor C7, a fourth common mode inductor LC4, and an eighth capacitor C8;

[0120] The third fuse F3 is electrically connected to the fourth fuse F4, the lightning protection tube FR1, and the fifth capacitor C5. The lightning protection tube FR1 is electrically connected to the second voltage-dependent resistor RV2. The second voltage-dependent resistor RV2 is electrically connected to the sixth capacitor C6 and the first MOS tube Q1. The first MOS tube Q1 is electrically connected to the voltage stabilizing diode D3. The voltage stabilizing diode D3 is electrically connected to the third common mode inductor LC3. The third common mode inductor LC3, the seventh capacitor C7, the fourth common mode inductor LC4, and the eighth capacitor C8 are all connected in parallel.

[0121] The advantage of this embodiment is that the loop composed of the third fuse F3, the fourth fuse F4, the lightning protection tube FR1, the second voltage-dependent resistor RV2, the fifth capacitor C5, and the sixth capacitor C6 can short-circuit strong pulse signals to the ground. The circuit composed of the first MOS tube Q1 and the voltage stabilizing diode D3 can ensure unidirectional current flow and prevent reverse connection. The circuit composed of the third common mode inductor LC3 and the seventh capacitor C7 can filter out common mode ripple interference signals. The circuit composed of the fourth common mode inductor LC4 and the eighth capacitor C8 can filter out differential mode ripple interference signals. It can be seen that the gateway power supply filtering protection unit can avoid electromagnetic interference, further improving the stability and reliability of the seat information display system.

[0122] Understandably, EMUs may encounter interference from extreme weather conditions, such as thunderstorms, during operation, potentially damaging the circuits in the seat information display system and preventing the system from properly displaying seat information. To address this issue, a lightning arrester FR1 is incorporated into the gateway power supply filter protection unit. This ensures that the seat display gateway module 200 can properly forward data or information when the EMU is operating in lightning weather, preventing lightning from affecting the seat information display system and improving its safety.

[0123] It should be noted that in Figure 8 In the figure, interface J2 represents the second input voltage interface, used to connect to an input power source, for example, 110V input voltage. 110V+ represents the positive power output terminal, and 110V- represents the negative power output terminal. Both can be connected to the gateway control chip to provide power. Alternatively, if needed, the positive and negative power output terminals can be electrically connected to a voltage conversion chip to use the converted voltage to power the gateway control chip.

[0124] like Figure 8 As shown, in some embodiments, the gateway power supply filter protection unit further includes a resistor R36 and a filter capacitor C15. After the fifth capacitor C5 and the sixth capacitor C6 short-circuit the strong pulse signal to ground, the remaining relatively weak pulse current passes through the resistor R36 and the filter capacitor C15, thereby further filtering out and weakening the ripple interference in the circuit. The gateway power supply filter protection unit may also include other electronic components such as capacitors and resistors, without limitation.

[0125] An embodiment of the present application also provides an EMU, which includes a carriage, and the carriage is provided with the above-mentioned seat information display system.

[0126] The specific implementation of this EMU is basically the same as the specific embodiment of the above-mentioned seat information display system, and will not be repeated here.

[0127] It should be noted that the electronic components, software tools or components not produced by our company that appear in the embodiments of this application are merely examples and do not represent actual use.

[0128] The embodiments described in the embodiments of this application are intended to more clearly illustrate the technical solutions of the embodiments of this application and do not constitute a limitation on the technical solutions provided by the embodiments of this application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of this application are also applicable to similar technical problems.

[0129] Those skilled in the art will understand that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0130] The device embodiments described above are merely illustrative. The units described as separate components may or may not be physically separate, i.e., they may be located in one place or distributed across multiple network units. Some or all of the modules may be selected based on actual needs to achieve the objectives of this embodiment.

[0131] Those skilled in the art will appreciate that all or some of the steps in the methods, systems, and functional modules / units in the devices disclosed above may be implemented as software, firmware, hardware, or appropriate combinations thereof.

[0132] The terms "first", "second", "third", "fourth", etc. (if any) in the specification of the present application and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0133] It should be understood that in this application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "At least one of the following items" or similar expressions refers to any combination of these items, including any combination of single items or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0134] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are merely illustrative, for example, the division of the above units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. The coupling or direct coupling or communication connection between the units or components shown or discussed can be indirect coupling or communication connection through some interfaces, apparatuses or units, and can be electrical, mechanical or other forms.

[0135] The units described above as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, i.e., they can be located in one place or distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0136] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit. The integrated unit can be realized in the form of hardware or in the form of a software functional unit.

[0137] If the integrated unit is realized in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the part of the prior art that makes a contribution or the whole or part of the technical solutions can be embodied in the form of a software product, which is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the method of each embodiment of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various program storage media.

[0138] The preferred embodiments of the embodiments of the present application are described above with reference to the accompanying drawings, but this does not limit the scope of the rights of the embodiments of the present application. Any modifications, equivalent replacements and improvements made by those skilled in the art without departing from the scope and essence of the embodiments of the present application shall be within the scope of the rights of the embodiments of the present application.

Claims

1. A seat information display system, characterized in that: The system includes a seat information access point module, a seat display gateway module and a seat information display module. The seat information display module includes a display control unit, a display power supply filtering protection unit and a lighting display unit. The seat information access point module is electrically connected to the seat display gateway module; The seat display gateway module is electrically connected to the display control unit; The display power supply filtering and protection unit is electrically connected to the display control unit and the lighting display unit; The display power supply filtering and protection unit is used to filter out interfering electrical signals and supply power to the lighting display unit.

2. The system according to claim 1, wherein: The display power supply filtering and protection unit includes a first surge and pulse protection unit, a filtering and anti-interference unit, an anti-reverse connection unit and a filtering circuit unit; The display control unit is electrically connected to the first surge protection and pulse protection unit; The first surge and pulse protection unit, the filtering and anti-interference unit, the anti-reverse connection unit, and the filtering circuit unit are electrically connected in sequence; The filter circuit unit is electrically connected to the lighting display unit; Among them, the first surge and pulse protection unit is used to short-circuit the surge or pulse signal to the ground, the filtering anti-interference unit and the filtering loop unit are used to filter out ripple interference signals, and the anti-reverse connection unit is used to ensure unidirectional current flow.

3. The system according to claim 2, characterized in that The first surge and pulse protection unit includes a first fuse and a clamping diode, the filtering and anti-interference unit includes a first inductor, a first capacitor and a second capacitor, the anti-reverse connection unit includes an anti-reverse connection diode, and the filtering circuit unit includes at least two first filtering capacitors; The first fuse is electrically connected to the clamping diode and the first inductor, and the clamping diode is grounded; The first inductor is electrically connected to the first capacitor, the second capacitor and the anti-reverse connection diode; The anti-reverse connection diode is electrically connected to at least two of the first filter capacitors, and any two of the first filter capacitors are connected in parallel.

4. The system according to any one of claims 1 to 3, characterized in that The lighting display unit includes a seat number display unit and a ticket status display unit; The seat number display unit includes at least two LED lamp beads and a fixing plate, and at least two LED lamp beads are evenly arranged on the fixing plate; each of the LED lamp beads is electrically connected to the display power filter protection unit; The ticketing status display unit is electrically connected to the display power filter protection unit; Wherein, the ticket status display unit is used to display the lighting status corresponding to the ticket information.

5. The system according to claim 4, characterized in that The lighting display unit also includes a display lens and a light-distributing plate; The display lens is fitted with the light-distributing plate, and there is a spacing distance between the display lens and each of the LED lamp beads; Seat information is printed on the surface of the display lens and the lens area corresponding to the seat number display unit, and the light averaging plate is used to average the light emitted by each of the LED lamp beads.

6. The system according to claim 5, characterized in that The distance between the display lens and each of the LED lamp beads ranges from 4 to 6 mm.

7. The system according to any one of claims 1 to 3, characterized in that The seat information access point module includes an access point mainboard chip and an access point power supply filtering and protection unit; The access point power supply filtering and protection unit includes a second surge and pulse protection unit, a first-level common-mode filtering unit and a second-level differential-mode filtering unit; The second surge and pulse protection unit, the first-level common-mode filter unit and the second-level differential-mode filter unit are electrically connected in sequence; The secondary differential mode filtering unit is electrically connected to the access point mainboard chip; The second surge and pulse protection unit is used to short-circuit the surge or pulse signal to the ground, the first-level common-mode filter unit is used to filter out the common-mode ripple interference signal, and the second-level differential-mode filter unit is used to filter out the differential-mode ripple interference signal to supply power to the access point motherboard chip.

8. The system according to claim 7, characterized in that The second surge and pulse protection unit includes a second fuse, a first varistor, a thermistor and a rectifier diode, the first common-mode filter unit includes a first common-mode inductor and a third capacitor, and the second differential-mode filter unit includes a second common-mode inductor and a fourth capacitor; The second fuse is electrically connected to the first varistor and the thermistor, the thermistor is electrically connected to the rectifier diode, the rectifier diode is electrically connected to the first common-mode inductor, and the first common-mode inductor, the third capacitor, and the second common-mode inductor are all connected in parallel with the fourth capacitor.

9. The system according to any one of claims 1 to 3, characterized in that The seat display gateway module includes a gateway control chip and a gateway power filter protection unit; The gateway power supply filtering and protection unit is electrically connected to the gateway control chip, and the gateway power supply filtering and protection unit is used to filter out ripple interference signals and supply power to the gateway control chip; The gateway power supply filter protection unit includes a third fuse, a fourth fuse, a lightning protection tube, a second varistor, a fifth capacitor, a sixth capacitor, a first MOS tube, a voltage regulator diode, a third common-mode inductor, a seventh capacitor, a fourth common-mode inductor and an eighth capacitor; The third fuse is electrically connected to the fourth fuse, the lightning protection tube and the fifth capacitor, the lightning protection tube is electrically connected to the second varistor, the second varistor is electrically connected to the sixth capacitor and the first MOS tube, the first MOS tube is electrically connected to the voltage-stabilizing diode, the voltage-stabilizing diode is electrically connected to the third common-mode inductor, and the third common-mode inductor, the seventh capacitor and the fourth common-mode inductor are all connected in parallel with the eighth capacitor.

10. An EMU, characterized in that: The EMU includes a carriage, and the carriage is provided with the system according to any one of claims 1 to 9.

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