Railway station route indicator device

Abstract

The invention discloses a railway station route indicator device which comprises a control circuit, a decoding circuit, a driving circuit and an LED display screen, the control circuit is connected with the decoding circuit, the decoding circuit is connected with the driving circuit, and the driving circuit is connected with the LED display screen; in railway engineering, a transmission line and a control circuit can keep the existing mode unchanged, investment is saved to the maximum extent, risks are reduced to the maximum extent, the LED display screen is used, and the problems that a traditional departure indicator is not clear in display, not visual and clear in information transmission and the like are solved by selecting the proper display size, brightness and information expression mode.

Description

Technical Field

[0001] The present invention relates to the technical field of railway signal machines, and in particular to a railway station route indicator device. Background Art

[0002] Signal indicators primarily include route indicators and shunting indicators, which provide auxiliary information for signal display commands for trains and shunting operations. Route indicators are used in conjunction with the main signal display to ensure that train operators clearly understand the direction of travel after the signal is opened.

[0003] Railway signal design specifications stipulate that when the normally lit departure signal machine and departure route and approach signal machine have two or more departure directions and the signal display cannot indicate the approach direction separately, it is advisable to set the approach indicator. The display distance of various indicators shall not be less than 200m. The approach indicator shall light up when the main signal machine is open and meet the needs of distinguishing the departure direction. Figure 1 The figure shows a display combination scheme for the nine-way route indicator of a certain exit signal. The route indicator described in this invention is primarily a departure indicator, which works closely with the signal to provide clear departure signals to the train driver, ensuring that trains can depart safely and accurately according to the predetermined route.

[0004] Departure route indicators are widely used at major stations and hubs. They are particularly useful in areas where multiple lines converge and train density is high. They display the route direction a train should follow when departing, including straight ahead, left turn, or right turn, helping drivers accurately judge and execute departure operations. With the clear instructions from the departure route indicator, trains can complete departure preparations and start in the shortest possible time, thereby improving the operational efficiency of the entire railway system. Departure route indicators work in conjunction with the signal system to ensure that the relevant routes are clear and safe before the train departs.

[0005] Currently, although departure indicators are used to provide departure instructions to drivers, due to their small size and limited brightness, it is difficult for drivers to clearly see the departure indicator display when driving at high speeds or in certain extreme weather conditions (such as heavy fog, heavy rain, etc.) or low light conditions. In addition, when there are many departure gates, different directions are generally indicated by different combinations of departure indicators. Drivers need to understand the meaning of the combination while seeing the indicator clearly, such as Figure 1The display combination shown corresponds to each departure direction, making the information transmission less intuitive and clear. The indoor circuit design of the multi-directional route indicator is complex, requiring the combination of relays in different directions to form a complex circuit to match the light positions of the outdoor indicator, which is difficult to design. It is understood that the indicators in traditional stations are often useless, and drivers prefer to use locomotive signals to determine direction. Therefore, it is necessary to propose a railway departure route indicator device and circuit to overcome the above-mentioned shortcomings. Summary of the Invention

[0006] The present application provides a railway station route indicator device to solve the problems that existing station route signals are inconvenient to observe, the route indicator mechanism is complex when trains depart in multiple directions, and the circuit design is difficult.

[0007] In one embodiment of the present application, a railway station route indicator device is provided, the device comprising a control circuit, a decoding circuit, a driving circuit, and an LED display screen, wherein the control circuit is connected to the decoding circuit, the decoding circuit is connected to the driving circuit, and the driving circuit is connected to the LED display screen;

[0008] The control circuit includes a plurality of directional relays connected to a computer interlocking system, wherein the plurality of directional relays correspond to different departure directions. The computer interlocking system drives the corresponding directional relay to close according to the target departure direction, and the directional relays corresponding to the other departure directions are all in an open state, and the directional relay corresponding to the target departure direction outputs a high-level signal to the decoding circuit;

[0009] The decoding circuit is used to convert the high-level signal output by the directional relay into an electrical signal for LED control and output it to the drive circuit;

[0010] The driving circuit is used to control the LED display screen to display the target departure direction information according to the electrical signal output by the decoding circuit.

[0011] Furthermore, the decoding circuit includes multiple code positions, and different code positions are connected to different directional relays. When the computer interlocking system drives the directional relay corresponding to the target departure direction to be attracted, the front contact of the corresponding directional relay is closed, and the decoder code position connected to the corresponding directional relay is powered on, thereby obtaining a high-level signal corresponding to the target departure direction.

[0012] Furthermore, the decoding circuit includes a logic conversion circuit, and the logic conversion circuit is used to convert the high-level signal of the directional relay into a digital signal.

[0013] Furthermore, the decoding circuit includes a signal acquisition and isolation circuit, which is used to use a photoelectric coupler to achieve electrical isolation between the directional relay level signal and the decoder circuit to avoid electromagnetic interference.

[0014] Furthermore, the driving circuit includes a dimming and color control circuit, which is used to control the brightness by adjusting the pulse width, respectively control the current of the red, green and blue channels, and realize display through PWM duty cycle mixing.

[0015] Furthermore, the driving circuit includes a protection circuit; the protection circuit has built-in overvoltage, undervoltage, overcurrent, and overtemperature protection functions to prevent damage to the LED lamp beads and the driving circuit; a hybrid LED array is used to improve system reliability, and a single point failure does not affect the overall display.

[0016] Furthermore, the LED display screen is arranged on the main signal light including red, yellow and green lights, and the LED screen uses white light to distinguish from the red, yellow and green lights of the main signal light.

[0017] Furthermore, the driving circuit is arranged in the main signal cabinet, and the driving circuit is connected to the LED display screen through the terminal optical cable.

[0018] Furthermore, the LED display screen is arranged above the main signal cabinet, and the display state, brightness and color of the LED display screen are controlled by a driving circuit.

[0019] Furthermore, the device also includes a transmission line, and the driving circuit is connected to a distribution board in a signal machinery room through a cable, and then connected to the decoding circuit through the distribution board.

[0020] The existing departure indicators are small and have limited brightness, making them difficult to observe clearly, and the information transmission is not intuitive and clear. The indoor circuit design of the multi-directional route indicator is complex, and relays in different directions need to be combined to form a complex circuit in order to match the light positions of the outdoor indicator. The circuit design is difficult. The present application provides a railway station route indicator device, which includes a control circuit, a decoding circuit, a drive circuit and an LED display screen. The control circuit is connected to the decoding circuit, the decoding circuit is connected to the drive circuit, and the drive is connected to the LED display screen. In railway engineering, the transmission line and the control circuit can maintain the existing method unchanged, which can save investment and reduce risks to the maximum extent. The use of LED display screens and the selection of appropriate display size, brightness and information expression methods can solve the problems of unclear display and unclear information transmission of traditional departure indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1This is a traditional 9-way departure signal departure indicator light combination diagram;

[0022] Figure 2 A circuit schematic diagram of a railway station route indicator device provided by one embodiment of the present invention;

[0023] Figure 3 It is a simplified diagram of various traditional departure indicators;

[0024] Figure 4 A diagram showing the LED display screen in a railway station route indicator device in an embodiment of the present invention being off.

[0025] Figure 5 A diagram showing the lighting status of an LED display screen in a railway station route indicator device provided by one embodiment of the present invention;

[0026] Figure 6 This is the structural diagram of a low-type three-light position signal light with an LED display;

[0027] Figure 7 This is a schematic diagram showing the connection between a 6-direction decoder and a driver in a railway station route indicator device provided by one embodiment of the present invention;

[0028] Figure 8 A circuit diagram of a direction relay driven by computer system interlocking information in a railway station route indicator device provided by one embodiment of the present invention;

[0029] Figure 9 This is the control circuit diagram of the traditional railway 6-direction departure route signal machine;

[0030] Figure 10 A circuit diagram of the connection between a decoder and a directional relay in a railway station route indicator device provided by one embodiment of the present invention.

[0031] In the picture: 1- low-type three-light signal machine; 2-LED display screen. DETAILED DESCRIPTION

[0032] The present invention will be further described in detail below by means of specific embodiments in conjunction with the accompanying drawings. Similar elements in different embodiments are numbered with associated similar elements. In the following embodiments, many detailed descriptions are provided to enable the present application to be better understood. However, those skilled in the art will readily appreciate that some of the features may be omitted in different circumstances, or may be replaced by other elements, materials, or methods. In some cases, some operations related to the present application are not shown or described in the specification. This is to avoid the core portion of the present application being overwhelmed by excessive descriptions, and for those skilled in the art, it is not necessary to describe these related operations in detail. They will fully understand the related operations based on the description in the specification and the general technical knowledge in the art.

[0033] In addition, the features, operations, or characteristics described in the specification may be combined in any appropriate manner to form various embodiments. Furthermore, the steps or actions in the method description may be reordered or adjusted in a manner readily apparent to those skilled in the art. Therefore, the various sequences in the specification and drawings are provided solely for the purpose of clearly describing a particular embodiment and are not intended to be mandatory, unless otherwise specified.

[0034] The first embodiment of the present invention provides a railway station route indicator device, such as Figure 2 As shown, the device includes a control circuit, a decoding circuit, a driving circuit and an LED display screen. The control circuit is connected to the decoding circuit, the decoding circuit is connected to the driving circuit, and the driving circuit is connected to the LED display screen.

[0035] The control circuit includes a plurality of directional relays connected to a computer interlocking system, wherein the plurality of directional relays correspond to different departure directions. The computer interlocking system drives the corresponding directional relay to close according to the target departure direction, and the directional relays corresponding to the other departure directions are all in an open state, and the directional relay corresponding to the target departure direction outputs a high-level signal to the decoding circuit;

[0036] The decoding circuit is used to convert the high-level signal output by the directional relay into an electrical signal for LED control and output it to the drive circuit;

[0037] The driving circuit is used to control the LED display screen to display the target departure direction information according to the electrical signal output by the decoding circuit;

[0038] The device also includes a transmission line. The driving circuit is connected to a distribution board in a signal machine room through a cable, and is then connected to a decoding circuit through the distribution board.

[0039] 1. LED display

[0040] The outdoor equipment of traditional railway departure route indicators is divided into two types: high column and low column according to the main signal machine. There are many types of indicators in the "Lens-type Color Light Signal Mechanism and Signal Indicator" (TBT 1413-2016), including one-light high column route indicator, two-light high column route indicator, three-light high column route indicator, four-light high column route indicator, six-light high column route indicator, one-light low-type route indicator, two-light low-type route indicator, three-light low-type route indicator, four-light low-type route indicator, and six-light low-type route indicator. Taking the four-display five-light position exit signal as an example, the specific ones are as follows: Figure 3 As shown in the figure, there are 5 types of high column route indicators and 5 types of low type route indicators. There are many types of departure indicators, which are relatively complicated. At the same time, the meaning of the combination light positions is complicated and not clear at a glance.

[0041] The railway departure route indicator of the present invention overcomes the characteristics of traditional indicators with various shapes and complex displays. The outdoor equipment (display device) adopts a high-strength, wind-resistant, impact-resistant and maintenance-free LED screen, such as Figure 4 As shown. The LED size can be adjusted according to the actual situation. It is recommended to use 400mm*380mm (length + width). The LED size must not exceed the railway limit. The LED screen uses white light to distinguish it from the red, yellow and green lights of the main signal lights. The LED screen displays the direction and the name of the departure gate (generally corresponding to the station signal). For example, in Beijing, Figure 5 as shown; or simplified to the name of the departure gate (generally corresponding to the station entrance signal).

[0042] The route indicator in this solution does not change the original main signal light structure. The main signal lights and circuits maintain the existing method. The original multi-light indicator lights are replaced with an integrated LED screen. The display LED screen is set below the main signal machine, and the LED screen bracket is installed on the main signal machine pillar. Figure 6 , Figure 6 The middle LED display screen 2 is arranged on the short three-light position signal machine 1.

[0043] 2. Transmission lines

[0044] The transmission line of the railway departure route indicator of the present invention is consistent with the existing one. The driving device of the display device is transmitted to the distribution board in the signal machine room through the traditional railway cable, and then connected to the decoder through the distribution board. The decoder corresponds one to one with the direction on the driving circuit. For example, the six-direction departure indicator has directions A, B, C, D, E, and F. A 6-core cable is required to connect the decoder to the corresponding direction on the driving circuit. The driving circuit is installed in the signal machine box and connected to the display through the end optical cable, such as Figure 7 shown.

[0045] 3. Control circuit

[0046] The control circuit design of the route indicator of the present invention directly utilizes the computer interlocking system to drive the corresponding directional relays. As many departure gates as there are, so too will the number of directional relays (such as AFJ, BFJ, CFJ, etc., note that AFJ, BFJ, and CFJ correspond to the actual departure gates). The acquisition and drive methods of the existing computer interlocking system remain unchanged, and the computer interlocking system does not need to be modified at all. The circuit diagram of the directional relay driven by the existing computer interlocking system is shown in FIG. Figure 8 As shown in the left figure, when the train needs to depart in direction A, the computer interlocking system will supply 24V power to the AFJ relay to make the AFJ relay absorb. Figure 8 As shown in the figure on the right, when the AFJ relay is attracted, the corresponding front contact of the AFJ relay node is connected. The interlocking collects the 24V power supply connected by the front contact of the AFJ relay terminal 1, and determines that the relay has been attracted, forming a closed information.

[0047] The traditional railway departure route indicator control circuit is relatively complex. Taking the 6-direction departure indicator as an example, different direction relays need to be combined to complete the display of different indicators, such as Figure 9 The circuit design considers six directional relays: AFJ, BFJ, CFJ, DFJ, EFJ, and FFJ, representing the six operating directions. When a train departs in one direction, the directional relay in that direction is energized and activated, while the other directional relays are all in the down state. When a train departs, the exit signal LXJ is activated. At this time, when one directional relay is activated, the other directional relays are down. The specific analysis is as follows:

[0048] (1) When the train is heading in the forward direction of direction A, AFJ is pulled up (↑), and the BFJ, CFJ, DFJ, EFJ, and FFJ relays are all pulled down (↓). LXJF3↑→AFJ3↑, ABQ lights up; LXJF4↑→AFJ4↑, DBQ lights up. The A and D indicators indicate that the train is heading in the direction of A.

[0049] (2) When the train is heading in the direction B, the BFJ is pulled up (indicated by ↑), and the AFJ, CFJ, DFJ, EFJ, and FFJ relays are all pulled down (indicated by ↓). LXJF3↑→AFJ3↓→BFJ3↑, ABQ lights up; LXJF4↑→AFJ4↓→BFJ4↑, BBQ lights up. The A and B indicators indicate that the train is heading in the direction B.

[0050] (3) When the train is heading in the direction of C, CFJ is pulled up (↑), and the BFJ, AFJ, DFJ, EFJ, and FFJ relays are all pulled down (↓). LXJF3↑→AFJ3↓→BFJ3↓→CFJ3↑, ABQ lights up; LXJF4↑→AFJ4↓→BFJ4↓→CFJ4↑, EBQ lights up. The A and E indicators indicate that the train is heading in the direction of C.

[0051] (4) When the train is departing in the D direction, DFJ is energized (↑). The BFJ, CFJ, AFJ, EFJ, and FFJ relays are all de-energized (↓). LXJF3↑→AFJ3↓→BFJ3↓→CFJ3↓→DFJ3↑, and CBQ lights up; LXJF4↑→AFJ4↓→BFJ4↓→CFJ4↓→DFJ4↑, and EBQ lights up. The C and E indicators indicate that the train is departing in the D direction.

[0052] (5) When the train is departing in the E direction, EFJ is energized (↑). The BFJ, CFJ, DFJ, AFJ, and FFJ relays are all de-energized (↓). LXJF3↑→AFJ3↓→BFJ3↓→CFJ3↓→DFJ3↓→EFJ3↑, and BBQ lights up; LXJF4↑→AFJ4↓→BFJ4↓→CFJ4↓→DFJ4↓→EFJ4↑, and CBQ lights up. The B and C indicators indicate that the train is departing in the E direction.

[0053] (6) When the train is departing in the forward direction of F, FFJ is energized (↑). The BFJ, CFJ, DFJ, EFJ, and AFJ relays are all de-energized (↓). LXJF3↑→AFJ3↓→BFJ3↓→CFJ3↓→DFJ3↓→EFJ3↓→FFJ3↑, and CBQ lights up; LXJF4↑→AFJ4↓→BFJ4↓→CFJ4↓→DFJ4↓→EFJ4↓→FFJ4↑, and FBQ lights up. The C and F indicators indicate that the train is departing in the F direction.

[0054] The above is a traditional railway departure route indicator control circuit. Different direction relays light up the indicator lights, and different indicator light groups form the meaning of each direction. The direction relays and indicator lights are not one-to-one corresponding, and the application is relatively cumbersome.

[0055] The present invention's departure route indicator control circuit greatly simplifies the circuit, and the meanings of the direction relay and the indicator light are in a one-to-one correspondence. Figure 10As shown, a set of contacts of a directional relay driven by the computer interlocking system is directly connected to the decoder. Each directional relay has a corresponding decoder code position. The center contact of the directional relay is connected to a 24V power supply, and the front contact is connected to the decoder. For example, when the computer interlocking system drives the AFJ, the front contact of the AFJ closes, powering the decoder code position connected to the AFJ. The decoder receives the corresponding level signal for the start command, and the AFJ indicator light on the decoder illuminates. (Note: The output is high (24V) when the relay is closed and low (0V) when it is open.)

[0056] 4. Decoding circuit

[0057] Converts the relay output switching level signal (closed 24V / disconnected 0V) into a digital signal suitable for LED control, including logic conversion, isolation protection and signal conversion functions.

[0058] (1) Logic conversion: Convert the 24V high level (closed) of the relay into a digital signal "1", and the 0V low level (open) into a "0". If multi-channel control is required, the output channels can be expanded through a decoding chip.

[0059] (2) Signal acquisition and isolation: A photocoupler lamp is used to achieve electrical isolation between the relay level signal and the decoder circuit to avoid electromagnetic interference.

[0060] (3) Signal conversion function: The decoder has different direction signals, such as direction A, direction B, etc., which correspond to the direction of the driving circuit at the other end of the cable.

[0061] 5. Driving circuit

[0062] The drive circuit is installed in the signal cabinet and connected to the LED display via an optical cable at the end. The drive circuit's process is as follows: the drive circuit receives the electrical signal in the corresponding direction, decodes it, and outputs a digital signal. The digital signal is converted into a constant current / constant voltage drive current to control the display status, brightness, and color of the LED.

[0063] (1) Signal reception and processing

[0064] The driver circuit has different direction signals, such as A and B, which correspond to the direction of the decoder at the other end of the cable. For example, when the corresponding direction on the driver circuit receives the electrical signal from the cable, it analyzes the signal and converts it into a digital signal.

[0065] (2) Dimming and color control

[0066] The brightness is controlled by adjusting the pulse width, and the current of the red, green and blue channels are controlled separately, and the display is achieved by mixing the PWM duty cycle.

[0067] (3) Protection mechanism

[0068] Built-in overvoltage, undervoltage, overcurrent and overtemperature protection functions to prevent damage to LED lamp beads and drive circuits.

[0069] The use of hybrid LED arrays (first series and then parallel) improves system reliability and single point failure does not affect the overall display.

[0070] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art can make several simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A railway station route indicator device, characterized in that: The device includes a control circuit, a decoding circuit, a driving circuit and an LED display screen, wherein the control circuit is connected to the decoding circuit, the decoding circuit is connected to the driving circuit, and the driving circuit is connected to the LED display screen; The control circuit includes a plurality of directional relays connected to a computer interlocking system, wherein the plurality of directional relays correspond to different departure directions. The computer interlocking system drives the corresponding directional relay to close according to the target departure direction, and the directional relays corresponding to the other departure directions are all in an open state, and the directional relay corresponding to the target departure direction outputs a high-level signal to the decoding circuit; The decoding circuit is used to convert the high-level signal output by the directional relay into an electrical signal for LED control and output it to the drive circuit; The driving circuit is used to control the LED display screen to display the target departure direction information according to the electrical signal output by the decoding circuit.

2. A railway station route indicator device according to claim 1, characterized in that: The decoding circuit includes multiple code positions, and different code positions are connected to different directional relays. When the computer interlocking system drives the directional relay corresponding to the target departure direction to be attracted, the front contact of the corresponding directional relay is closed, and the decoder code position connected to the corresponding directional relay is powered on, thereby the decoder obtains the high-level signal corresponding to the target departure direction.

3. A railway station route indicator device according to claim 1, characterized in that: The decoding circuit includes a logic conversion circuit, and the logic conversion circuit is used to convert the high-level signal of the directional relay into a digital signal.

4. A railway station route indicator device according to claim 1, characterized in that: The decoding circuit includes a signal acquisition and isolation circuit, which is used to use a photoelectric coupler to achieve electrical isolation between the directional relay level signal and the decoder circuit to avoid electromagnetic interference.

5. A railway station route indicator device according to claim 1, characterized in that: The driving circuit includes a dimming and color control circuit, which is used to control brightness by adjusting pulse width, respectively control the current of red, green and blue channels, and realize display through PWM duty cycle mixing.

6. A railway station route indicator device as claimed in claim 1, characterized in that: The driving circuit includes a protection circuit; the protection circuit has built-in overvoltage, undervoltage, overcurrent, and overtemperature protection functions to prevent damage to the LED lamp beads and the driving circuit; a hybrid LED array is used to improve system reliability, and a single point failure does not affect the overall display.

7. A railway station route indicator device according to claim 1, characterized in that: The LED display screen is arranged on the main signal light including red, yellow and green lights, and the LED screen adopts white light to distinguish from the red, yellow and green lights of the main signal light.

8. A railway station route indicator device as claimed in claim 7, characterized in that: The driving circuit is arranged in the main signal cabinet, and the driving circuit is connected to the LED display screen through the terminal optical cable.

9. A railway station route indicator device as claimed in claim 8, characterized in that: The LED display screen is arranged above the main signal cabinet, and the display state, brightness and color of the LED display screen are controlled by a driving circuit.

10. The railway station route indicator device according to claim 1, characterized in that: The device also includes a transmission line. The driving circuit is connected to a distribution board in a signal machine room through a cable, and is then connected to a decoding circuit through the distribution board.

Images