CN114735051A - Train station platform carriage location and display system - Google Patents
Train station platform carriage location and display system Download PDFInfo
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- CN114735051A CN114735051A CN202210510416.2A CN202210510416A CN114735051A CN 114735051 A CN114735051 A CN 114735051A CN 202210510416 A CN202210510416 A CN 202210510416A CN 114735051 A CN114735051 A CN 114735051A
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- 238000004891 communication Methods 0.000 claims abstract description 35
- 238000005516 engineering process Methods 0.000 abstract description 6
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- 238000005259 measurement Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 6
- 238000009940 knitting Methods 0.000 description 4
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention relates to a train station carriage positioning and display system, which comprises not less than 3 positioning base stations arranged at intervals, positioning beacons arranged in each carriage of a train and display units arranged at each station, wherein the positioning base stations perform ranging, data processing and communication work by utilizing a built-in antenna, a millimeter wave ranging communication unit, a Bluetooth ranging communication unit, a high-precision clock and an MCU processing unit. The invention provides a distance measuring, positioning and communication system using millimeter wave and Bluetooth technology, which can realize accurate measurement of the relative distance and position between a train carriage and a platform, can uniquely and obviously mark the carriage position, and effectively solves the problem that a passenger cannot conveniently find the carriage because a color code marking system is adopted to display the carriage position at present.
Description
Technical Field
The invention relates to the technical field of railways, in particular to a train station platform carriage positioning and displaying system.
Background
The train stations have more trains coming and going every day, one platform often sends and receives trains in different directions, and due to the fact that the sequencing of carriages in different directions is different. At the same time, the train consist may have both 8 and 16 knots. Thus, the location of the "landmark" on the station changes. Generally, blue means 16-node grouping forward knitting, yellow means 16-node grouping backward knitting, green means 8-node grouping forward knitting, and purple means 8-node grouping backward knitting. But the passenger is not aware of this information accurately.
The general passenger has two modes of finding the passenger compartment:
the method comprises the following steps: and according to the instruction, the passenger goes to the corresponding platform position of the passenger compartment for waiting, and then the passenger needs to wait according to the following three steps:
firstly, looking at train number information displayed on a large screen in a waiting room, and searching for a landmark color corresponding to the train number taken; then, the user goes to the carriage corresponding to the purchased ticket by looking at the guide display board on the platform; then finding the position according to the prompt, such as: and searching the carriage number according to the color of the landmark corresponding to the riding times displayed on the large screen.
The second method comprises the following steps: when a train enters a station and stops, the train is directly found according to the carriage number of the carriage door opening mark. This method may take a long time because it is necessary to find at least two consecutive cars to know which direction the own car is in. If the time is urgent, the vehicle gets on from the nearest compartment first, and then is found on the vehicle according to the number of the compartments on the compartment.
No matter which mode above, all directly perceived succinct inadequately, extravagant passenger's time also causes a lot of passenger confusion simultaneously, finds wrong carriage, in the age that the high-speed railway is leading to informationization, intellectuality, needs a more simple and convenient, audio-visual identification system.
Disclosure of Invention
The invention provides a train station platform carriage positioning and displaying system, which aims to solve the problems that the position identification of a train station platform carriage is not clear and passengers are confused in finding the carriage.
The invention discloses a train station car positioning and display system, which comprises not less than 3 positioning base stations arranged at intervals, positioning beacons arranged in each car of a train, a display unit arranged at each station and a train customer service server, wherein the positioning base stations, the positioning beacons, the display unit and the train customer service server are connected through a communication network.
The positioning base station transmits radio waves by using an antenna to communicate with a positioning beacon positioned in a train compartment, measures the time of flight (TOF) of a wireless signal and the signal sensitivity (RSSI) of millimeter waves and Bluetooth by using a high-precision clock, and calculates the distance between the base station and the compartment. The number of the positioning base stations is not less than 3, and the train customer service server accurately judges the positions of the positioning beacons by utilizing the principle of triangulation positioning. The positioning base station is deployed on the platform, and can be suspended or buried.
The positioning beacon of each carriage arranged on the train is bound with the number information of the carriage, the positioning beacon transmits radio information in real time and carries out data interaction with the positioning base station, and the positioning base station calculates the distance between the positioning beacon and the positioning base station by measuring the TOF and RSSI data of each positioning beacon. The plurality of positioning base stations simultaneously calculate the distance of the beacon, so that the relative position and the traveling speed of the positioning beacon are calculated, and the position of the carriage where the positioning beacon is located can be positioned in real time.
And the display unit arranged at each platform is used for dynamically displaying the carriage number in real time. Preferably, the display unit is hung right above the platform position corresponding to one doorway of each carriage when the train stops. Preferably, the display screen type is an LED display screen.
The positioning beacon is arranged on each carriage, can work independently and can also be communicated with a carriage display screen to display the position information in real time when the station is entered. The positioning beacon can also provide real-time position change information of the train and the platform to a train master control computer by accessing a train communication link so as to realize automatic station entering and stopping of the train.
The train customer service server is an upper computer of the MCU processing unit of the positioning base station, can be a server of a station, and can also be an independent computer.
Furthermore, the number of the positioning base stations is at least more than 3, the positioning base stations can exist independently, and the positioning base stations and a display unit can share one physical protection shell, so that system installation and maintenance are facilitated.
Furthermore, the train station platform carriage positioning and displaying system also comprises passenger moving end equipment which is connected with the positioning base station through Bluetooth. The Bluetooth ranging communication unit of the positioning base station can send real-time carriage position information to passenger mobile terminal equipment by utilizing the Bluetooth communication technology and the direct communication capability of the passenger mobile terminal equipment, so that the real-time reminding function is realized.
The passenger mobile terminal equipment can communicate with the train customer service server through a communication network. The passenger mobile terminal equipment can access the train customer service server through the WeChat applet or APP to obtain the information of train number and carriage position.
Furthermore, the train station carriage positioning and displaying system also comprises a train master control computer which is communicated with the positioning beacon through a communication network. When a train enters a station, the positioning beacon transmits real-time accurate position information of the train relative to the station to a train master control computer by utilizing information broadcasting of the millimeter wave distance measuring communication unit and the Bluetooth distance measuring communication unit so as to realize accurate stop of the train.
The invention provides a distance measuring, positioning and communication system using millimeter wave integrated Bluetooth technology, which can accurately measure the relative distance and position between a train carriage and a platform, can uniquely and obviously mark the carriage position, and effectively solves the problem that a passenger cannot conveniently search the carriage because a color code marking system is adopted to display the carriage position at present.
The millimeter wave has a ranging function accurate to centimeter level and has high-speed communication capability. Bluetooth AOD, AOA function are united to the millimeter wave and compound range finding and directional location are carried out, can dual check-up for the location is faster, more accurate.
The invention has the advantages of foresight, expansibility, real-time positioning and centimeter-level accurate distance measurement technology, can support the arrival and stop of automatic train driving, provides technical support for automatic driving and realizes double functions.
Drawings
FIG. 1 is a schematic diagram showing the connection of the components of the system of the present invention.
Fig. 2 is a schematic diagram of triangulation.
Fig. 3 is a schematic structural diagram of a point location base station and a display unit sharing a physical protective shell.
Detailed Description
The invention is further illustrated by the following figures and examples.
Example one
FIG. 1 is a schematic diagram showing the connection of the components of the system according to this embodiment. The train station car positioning and display system comprises not less than 3 positioning base stations arranged at intervals, positioning beacons arranged in each car of a train, a display unit arranged in each station and a train customer service server, wherein the positioning base stations, the positioning beacons, the display unit and the train customer service server are connected through a communication network.
The positioning base station adopts a high-precision clock to calculate the two-way transmission time of signals between the positioning base station and the train carriage so as to measure the distance between the positioning base station and the train carriage. Namely, the TOF ranging method belongs to a two-way ranging technology, and mainly utilizes the time of flight of a signal back and forth between two asynchronous transceivers (transceivers) or signal reflecting surfaces to measure the distance between nodes. The distance measurement is carried out on the train carriage through more than 3 base stations, and the relative position information of the carriage is calculated by using a triangulation method.
The distance measurement formula between the station base station and the vehicle beacon is as follows:
TOF=RBTT/2=(RTOB-RBAT)/2
D=TOF*c
after a T0 data packet is sent from a first positioning base station (R1) to a positioning Beacon (Beacon) for receiving, a T1 data packet is automatically forwarded to R1, the total time RTOB from the T0 data sending of R1 to the T1 data receiving is subtracted by the transit time RBAT of the Beacon, and the transit time RBAT is the air flight time RBTT of the radio signal.
The division of the total time of flight RBTT by 2 is the time of flight TOF between R1 and Beacon, which is multiplied by the velocity (c =299792458 m/s) to yield the distance D between the two points.
Real Time Location systems (rtls) are a positioning means based on radio signals. In a positioning system distributed with a plurality of fixed base stations, if the distance between a label to be positioned and each base station is obtained through a wireless ranging technology, the position of the label can be calculated.
Fig. 2 is a schematic diagram of triangulation location based on a wireless TOF ranging technique, which includes a Beacon to be located, and a first positioning base station (R1), a second positioning base station (R2), and a third positioning base station (R3) distributed nearby, where TOF ranging can be used to determine a distance DR1 from the Beacon to R1, a distance DR2 from R2, and a distance DR3 from R3, where R1, R2, and R3 are used as centers of circles, and DR1, DR2, and DR3 are used as radii to make circles, and an intersection point of 3 circles is calculated as a position where the Beacon is located, so as to implement real-time location of the Beacon.
Fig. 3 is a schematic structural diagram of a point location base station and a display unit sharing a physical protective shell in this embodiment. The system comprises an antenna 11, a millimeter wave ranging communication unit 12, a Bluetooth ranging communication unit 13, a high-precision clock 14, an MCU processing unit 15 and a display unit 20.
The train station platform carriage positioning and displaying system of the embodiment further comprises passenger moving end equipment which is communicated with the positioning base station through a Bluetooth communication module. The positioning base station directly transmits the information of the train number and the carriage position to the passenger mobile terminal equipment through the information broadcast of the Bluetooth ranging communication unit, so that the real-time reminding function is realized.
The working process of the embodiment is as follows:
(1) when a train enters a station, a positioning beacon arranged in a train carriage enters the identification range of a positioning base station, the positioning base station sends clock synchronization information to the positioning beacon, and the positioning beacon receives the information and returns the information.
(2) The millimeter wave ranging communication unit of the positioning base station fuses the Bluetooth ranging communication unit to synchronously work, and the distance between the positioning base station and the positioning beacon is measured. And information is transmitted and received between the positioning base station and the positioning beacon through the millimeter wave ranging communication unit and the Bluetooth ranging communication unit.
(3) And the positioning base station sends the position information data obtained by ranging to the train customer service server, and the train customer service server calculates the accurate position of the positioning beacon according to the position data of the same positioning beacon returned by at least 3 positioning base stations and feeds back the information to the positioning base stations.
(4) And when the positioning base station identifies that the position of the positioning beacon does not change any more within the set time, the carriage number information contained in the positioning beacon is sent to the corresponding display unit through Bluetooth information broadcasting. The display unit displays the corresponding car number information.
(5) The positioning base station broadcasts the carriage number information of each positioning beacon through the Bluetooth ranging communication unit, and the passenger mobile terminal equipment receives the information through the Bluetooth module.
Example two
On the basis of the first embodiment, the embodiment further comprises a train master control computer which is communicated with the positioning beacon through a communication network.
In this embodiment, when a train enters a station, the positioning beacon transmits real-time accurate position information of the train relative to the station to the train main control computer by using the information broadcast of the bluetooth ranging communication unit, so as to realize accurate stop of the train.
The working flow of this embodiment is:
(1) when a train enters a station, a positioning beacon arranged in a train carriage enters the identification range of a positioning base station, the positioning base station sends clock synchronization information to the positioning beacon, and the positioning beacon receives the information and returns the information.
(2) The millimeter wave ranging communication unit of the positioning base station fuses the Bluetooth ranging communication unit to synchronously work, and the distance between the positioning base station and the positioning beacon is measured. And information is transmitted and received between the positioning base station and the positioning beacon through the millimeter wave ranging communication unit and the Bluetooth ranging communication unit.
(3) And the positioning base station sends the position information data obtained by ranging to the train customer service server, and the train customer service server calculates the accurate position of each positioning beacon according to the position data of the same positioning beacon returned by at least 3 positioning base stations and feeds back the information to the positioning base stations.
(4) And the positioning base station feeds back the position information of the positioning beacon to the positioning beacon.
(5) The positioning beacon sends the position information to a train main control computer, and the train main control computer accurately controls the parking speed according to preset information so as to realize accurate parking.
(6) And when the positioning base station identifies that the position of the positioning beacon does not change any more within the set time, the carriage number information contained in the positioning beacon is sent to the corresponding display unit through Bluetooth information broadcasting. And a display screen of the display unit displays corresponding carriage number information.
(7) The positioning base station broadcasts the carriage number information of each positioning beacon through the Bluetooth ranging communication unit, and the passenger mobile terminal equipment receives the information through the Bluetooth module.
It should be noted that, in the above description of the workflow, the workflow is divided into steps for easy understanding, and in practical applications, the data processing time or the information transmission time only differs between the steps, the interval time is very short, and the time difference between the steps may be imperceptible to a human.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the essential principle of the invention, and the scope of the invention should be considered as the protection scope of the present invention.
Claims (7)
1. A train station car positioning and display system comprises at least 3 positioning base stations arranged at intervals, positioning beacons arranged in each car of a train, a display unit arranged in each platform and a train customer service server, wherein the positioning base stations, the positioning beacons, the display unit and the train customer service server are connected through a communication network.
2. The train station car positioning and display system of claim 1, further comprising a train master computer connected to the positioning beacon via a communications network.
3. The train station car positioning and display system of claim 1, wherein the positioning base station is in a buried configuration.
4. The train station car positioning and display system of claim 1, wherein the positioning base station is integrated within a physically protected enclosure of the display unit.
5. The train station car positioning and display system of claim 4, wherein said display unit is of the suspended type.
6. The train station car positioning and display system of claim 1 or 2, further comprising a passenger mobile terminal connected to the positioning base station via bluetooth.
7. The train station car positioning and display system of claim 6, wherein the passenger mobile terminal device is connected to the train service server through a communication network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510416.2A CN114735051A (en) | 2022-05-12 | 2022-05-12 | Train station platform carriage location and display system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210510416.2A CN114735051A (en) | 2022-05-12 | 2022-05-12 | Train station platform carriage location and display system |
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| Publication Number | Publication Date |
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| CN114735051A true CN114735051A (en) | 2022-07-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210510416.2A Pending CN114735051A (en) | 2022-05-12 | 2022-05-12 | Train station platform carriage location and display system |
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| CN (1) | CN114735051A (en) |
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- 2022-05-12 CN CN202210510416.2A patent/CN114735051A/en active Pending
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