CN110901706A - Interval responder message triggering method and system - Google Patents
Interval responder message triggering method and system Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
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Abstract
The invention designs a message triggering method of an interval responder, which comprises the following steps: the receiving unit receives and stores message information sent by a station data server; the receiving unit transmits the responder message information corresponding to the interval responder to the vehicle-mounted main control unit to complete the triggering of the interval responder message information; the receiving unit releases all the interval responder message information corresponding to the outbound responder message information. The invention respectively completes the storage of the message information, the triggering of the message information and the release of the message information through the outbound transponder, the interval transponder and the inbound transponder, comprises the line information condition in the wireless network coverage range, ensures the rapid storage and use of the message information, and solves the condition of insufficient internal capacity of the line through the setting of the interval transponder.
Description
Technical Field
The invention belongs to the field of rail transit, and particularly relates to a method and a system for triggering interval responder messages.
Background
A transponder refers to an electronic module capable of transmitting a message reply message. In recent years, due to the rapid development of radio frequency technology, transponders have new meanings and meanings, also called smart tags or labels. The intelligent label is an innovation of a radio frequency label, and consists of a label with viscosity and an ultrathin radio frequency label. The intelligent label combines the advantages of radio frequency technology and convenient and flexible label printing, and the intelligent label with the read-write function can be programmed for multiple times and follows the encoding rule when the label is manufactured initially.
In a station range, by arranging the interval responder group and the reverse interval responder group, when the train head passes through the interval responder or the reverse interval responder, the receiving unit of the vehicle-mounted equipment responder receives and arranges signals of the ground responder, and transmits the arranged information to the vehicle-mounted main control unit. However, the zone transponder or the reverse zone transponder transmits a ground transponder signal to the vehicle-mounted device, and the zone transponder or the reverse zone transponder can only process one-way station line data. And the transponder capacity of the station entrance and the reverse station entrance cannot meet the line data requirement for describing the whole line interval.
Disclosure of Invention
Aiming at the problems, the invention designs an interval responder message triggering method, which comprises the following steps:
the receiving unit receives and stores message information sent by a station data server;
the receiving unit transmits the responder message information corresponding to the interval responder to the vehicle-mounted main control unit to complete the triggering of the interval responder message information;
the receiving unit releases all the interval responder message information corresponding to the outbound responder message information.
Preferably, when the section is the departure direction and the initialization of the temporary speed limit is completed, the station data server broadcasts the message information outwards by adopting wireless broadcasting.
Preferably, the message information includes outbound transponder message information and inter-zone transponder message information;
the outbound responder message information comprises an interval responder linked list information frame.
Preferably, when the train runs in the coverage area of the railway special wireless communication network, the receiving unit periodically receives the message information broadcast by the station data server.
Preferably, the receiving unit performs timeliness detection on the received message information, determines a detection result, and executes the following steps according to the result:
if the message information exceeds the set time from the last updating time, the receiving unit deletes the message information;
and if the message information does not exceed the set time from the last updating time, the receiving unit keeps the message information.
Preferably, the set time is set as the time for performing the timeliness detection on the message information.
Preferably, when the train passes over the outbound transponder, the receiving unit analyzes the information frame of the link table of the interval transponder;
confirming the number of the interval transponders and the serial numbers of the interval transponders in the wireless communication network interval;
the receiving unit stores the interval transponder message information, and when the train runs in a coverage area without a wireless communication network, the interval transponder message information is ensured to be continuously effective.
Preferably, when the train crosses the zone transponder:
if the number of the interval responder is consistent with the number of the interval responder corresponding to the interval responder message stored by the receiving unit;
and the receiving unit transmits the transponder message information corresponding to the interval transponder number to the vehicle-mounted main control unit.
Preferably, when the train crosses the inbound transponder and triggers the inbound transponder message:
and the receiving unit releases all the stored interval linked list information and the interval responder message information.
A message triggering system of an interval responder comprises a receiving module, a triggering module and a releasing module;
the receiving module is used for receiving and storing message information sent by the station data server;
the triggering module is used for the receiving unit to transmit the message information corresponding to the interval responder to the vehicle-mounted main control unit;
the releasing module is used for the receiving unit to release all the interval responder message information corresponding to the interval responder linked list information of the outbound responder message information.
Preferably, the receiving module comprises an aging unit;
the time efficiency unit is used for the receiving unit to perform time efficiency detection on the received message information.
The invention has the technical effects that: the storage of the message information, the triggering of the message information and the release of the message information are respectively completed through the outbound responder, the interval responder and the inbound responder, the state of the line information in the coverage range of a wireless network is included, the rapid storage and the use of the message information are ensured, and the state of insufficient internal capacity of the line is solved through the interval responder.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without creative efforts.
Fig. 1 shows a schematic view of a wireless network coverage of a station interior transponder according to an embodiment of the present invention;
FIG. 2 shows an overall step process diagram of an embodiment of the invention;
fig. 3 shows a schematic diagram of the arrangement of a zone transponder group Q in the prior art;
fig. 4 shows a schematic diagram of the arrangement of the reverse zone transponder group FQ in the related art.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows a schematic diagram of a wireless network coverage area of a transponder in a station according to an embodiment of the present invention. As shown in fig. 1, the railway-dedicated wireless network only covers the station-in-station transponder and the speed-up transponder, but cannot cover the inter-zone transponder.
Meanwhile, the capacity of the inbound/reverse inbound responder cannot meet the requirement for describing line data of the whole line interval, so that the interval responder is used for providing information description for the line data and describing interval line data information for the vehicle-mounted main control unit.
The vehicle-mounted main control unit needs to receive the message information of the interval transponder in the station and trigger the message information of the interval transponder when the vehicle head passes through the interval transponder, so that the triggering of the message information of the interval transponder is completed.
Fig. 2 shows a schematic diagram of the overall step process of an embodiment of the present invention. As shown in fig. 2, the present invention provides a method for triggering an inter-zone responder packet, which comprises the following steps:
the method comprises the following steps: the receiving unit receives and stores message information sent by a station data server;
the present invention is described with an example in which a train operates in a coverage area of a wireless communication network. When the train runs in the coverage area of the wireless communication network and the station data server is in the temporary speed limit initialization state, the station data server broadcasts message information outwards in a railway special wireless broadcast communication mode. Illustratively, the receiving unit is a wireless message receiving unit of a transponder of the vehicle-mounted device.
When the train runs in the coverage area of the railway special wireless communication network, the receiving unit periodically receives the transponder message information in the total station range broadcast by the station data server. The receiving unit periodically receives the messages to ensure the timeliness of the messages of the responder and ensure that the messages of the responder are updated in time when the train is in operation. That is, the station yard situation (e.g., the access condition, the temporary speed limit condition, the block direction, etc.) changes, the transponder message information changes, and the transponder message broadcast by the station data server changes.
After receiving the message information, the receiving unit needs to perform timeliness detection on the message information, judge the detection result, and execute the following steps according to the result:
if the message information exceeds the set time from the last updating time, the receiving unit deletes the message information;
if the message information does not exceed the set time from the last updating time, the receiving unit keeps the message information.
When a train runs in the coverage area of the railway special wireless communication network, the on-board equipment transponder wireless message receiving unit can periodically receive all transponder message information in the total station range broadcasted by the station data server, and at the moment, the received message information needs to be subjected to timeliness detection, so that the message information can be screened.
The screening mode is judged according to the length of the last updating time, wherein the set time is set to be 60s, and when the time from the last updating of the message information by the receiving unit exceeds 60s, the receiving unit deletes the received message information. Limited by the bandwidth of the special wireless communication network, the station data server needs a plurality of cycles to finish broadcasting the message information of the total station transponder, and the message information of the transponder changes along with the change of the station conditions (such as access conditions, temporary speed limit states, section running directions and the like). Therefore, the receiving unit needs to limit the storage time of the message information by setting time, so as to ensure the timeliness of the message of the responder.
When the time from the last time the receiving unit updated the message information does not exceed 60s, the receiving unit maintains the received message information.
When the train head crosses the outbound transponder, the receiving unit analyzes the linked list information frame of the interval transponder. Confirming the number of interval responders and the number of the responders in an interval without the coverage of the special wireless communication network through an interval responder linked list information frame, wherein the interval responder linked list information frame is as follows:
TABLE 1 Interval Transponder Linked List information frame
As shown in table 1, the span responder linked list information frame between the outbound responder and the inbound responder, where the PACKET id of NID _ PACKET is the displacement id of one PACKET, and N _ QJ _ BG indicates the number of span responder groups contained in the span. NID _ C and NID _ C (k) denote zone numbers of zone transponders, and NID _ BG (k) identify transponder group numbers of zone transponders.
When the train head crosses the outbound transponder and the number of the interval transponders in the train running interval is confirmed, the receiving unit stores the received interval transponder message information of the interval. When the train runs in a coverage area without a wireless communication network, the validity of the transponder message information of the storage interval is ensured. For example, when the train operates in an interval without coverage of the wireless communication network, the stored interval transponder message information can completely provide specific conditions in the interval, such as the distance of the next transponder group, the slope change of the line, the specific condition of the line, and the like.
Step two: the receiving unit transmits the message information corresponding to the interval responder message information to the vehicle-mounted main control unit to complete the triggering of the interval responder message information;
when the train head passes over the interval direction transponder, the number of the interval direction transponder is consistent with that of the interval transponder message stored by the receiving unit, and the receiving unit transmits the interval transponder message information to the vehicle-mounted main control unit, so that the triggering of the interval transponder message information is completed. And the vehicle-mounted main control unit updates the data information of the train operation line by triggering the interval responder message.
Illustratively, the triggering process of the message information in the interval direction ensures the quick transmission of the message information of the interval responder. The train operation is controlled by the vehicle-mounted main control unit through the interval transponder message information, at the moment, the train can rapidly update the line data information related to the message information, and the train can be ensured to safely operate in the interval line range without the coverage of the special wireless communication network.
Step three: the receiving unit releases all the message information corresponding to the message information of the outbound transponder;
when the train head passes over the inbound responder and triggers the inbound responder message information, the receiving unit releases all the interval responder linked list information of the stored outbound responder message information and the corresponding interval responder message information.
The receiving unit releases all the interval responder linked list information of the outbound responder message information and the corresponding interval responder message information, so that the single operation of the interval responder message interval stored by the receiving unit is effective, namely, when the train enters the interval again, the historical message information cannot be used, and the train operation safety is guaranteed. Illustratively, when the train head passes over the inbound transponder, the receiving unit needs to release the internally stored interval transponder message information, and it is ensured that the train does not use the historical interval transponder message information when running to the interval again.
The invention also provides a message triggering system of the interval responder, which comprises a receiving module, a triggering module and a releasing module;
the receiving module is used for receiving and storing the responder message information sent by the station server;
the receiving module receives and stores the transponder message information in the total station range, and the transponder message needs to be deleted when the transponder message information is not updated in the set time range. When the train head crosses the outbound transponder, the message information of the interval transponder of the interval in which the train is located is screened, the interval transponder of the whole interval is determined through the information frame of the linked list of the interval transponder, then the message information of the interval transponder is stored, and the timeliness check is not performed on the message of the interval transponder of the interval.
The triggering module is used for the receiving unit to transmit the message information corresponding to the interval responder to the vehicle-mounted main control unit;
the message information of the interval responder can be compared with the number of the interval responder in the line, and the message information of the comparison part is transmitted to the vehicle-mounted main control unit to complete the triggering of the message information of the interval responder.
The release module is used for the receiving unit to release all the message information corresponding to the responder linked list information and the interval responder;
the interval responder message information in the invention can be compared with the interval responder linked list information of the outbound responder message information, thereby releasing the message information of the comparison part in the receiving unit.
Fig. 3 shows a schematic diagram of the arrangement of the zone transponder group Q in the related art. As shown in fig. 3, an approach transponder group JZ and a reverse approach transponder group FJZ are respectively disposed on both sides of the mechanical insulation section, wherein the section transponder group Q is disposed on the line, wherein the distance between the transponder group and the inlet of the closer block section is 200 m. And a section transponder group Q is arranged at an entrance of the block subarea and used for positioning the train and sending line fixed information such as line allowable speed, line gradient, track section, special section and the like to vehicle-mounted equipment for CTCS-2 level train control.
Fig. 4 shows a schematic diagram of the arrangement of a reverse range transponder group FQ of the related art. As shown in fig. 4, when the capacity of the passive transponder for transmitting the reverse line data at the station entrance or the relay station cannot meet the requirement, a reverse interval transponder group FQ is separately provided at the track circuit insulation section entrance for transmitting the reverse line data to the CTCS-2 stage train control on-board device. The range between the two reverse zone transponder groups FQ is not greater than the distance of 3 occlusion zones.
Compared with the prior art, the interval direction message information in the invention can be compared with the interval responder number in the line in the coverage range of the special wireless network, and the message information of the compared part is transmitted to the vehicle-mounted main control unit to complete the triggering of the interval responder message information; the interval responder message information in the invention can be compared with the interval responder linked list information of the outbound responder message information in the line, thereby releasing the message information of the comparison part in the receiving unit. The storage of the message information, the triggering of the message information and the release of the message information are respectively completed through the outbound responder, the interval responder and the inbound responder, the state of the line information in the coverage range of the special wireless network is included, the rapid storage and the use of the message information are ensured, and the state of insufficient capacity in the line is solved through the interval responder.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A message triggering method for an interval responder is characterized by comprising the following steps:
the receiving unit receives and stores message information sent by a station data server;
the receiving unit transmits the responder message information corresponding to the interval responder to the vehicle-mounted main control unit to complete the triggering of the interval responder message information;
the receiving unit releases all the interval responder message information corresponding to the outbound responder message information.
2. The inter-zone transponder message triggering method according to claim 1,
and when the interval is the departure direction and the initialization of the temporary speed limit is completed, the station data server broadcasts the message information outwards by adopting wireless broadcasting.
3. The inter-zone transponder message triggering method according to claim 2,
the message information comprises outbound responder message information and interval responder message information;
the outbound responder message information comprises an interval responder linked list information frame.
4. The inter-zone transponder message triggering method according to claim 3,
and the receiving unit periodically receives the message information broadcast by the station data server when the train runs in the coverage range of the railway special wireless communication network.
5. The inter-zone transponder message triggering method according to claim 4,
the receiving unit carries out timeliness detection on the received message information, judges the detection result and executes the following steps according to the result:
if the message information exceeds the set time from the last updating time, the receiving unit deletes the message information;
and if the message information does not exceed the set time from the last updating time, the receiving unit keeps the message information.
6. The inter-zone transponder message triggering method according to claim 5,
the set time is set as the time for the message information to carry out timeliness detection.
7. The inter-zone transponder message triggering method according to claim 4,
when the train crosses the outbound responder, the receiving unit analyzes the information frame of the link table of the interval responder;
confirming the number of the interval transponders and the serial numbers of the interval transponders in the wireless communication network interval;
the receiving unit stores the interval transponder message information, and when the train runs in a coverage area without a wireless communication network, the interval transponder message information is ensured to be continuously effective.
8. The inter-zone transponder message triggering method according to claim 7,
when the train crosses the section transponder:
if the number of the interval responder is consistent with the number of the interval responder corresponding to the interval responder message stored by the receiving unit;
and the receiving unit transmits the transponder message information corresponding to the interval transponder number to the vehicle-mounted main control unit.
9. The inter-zone transponder message triggering method according to claim 7,
when the train crosses the inbound responder and triggers the inbound responder message:
and the receiving unit releases all the stored interval linked list information and the interval responder message information.
10. An inter-zone responder message triggering system is characterized in that,
the device comprises a receiving module, a triggering module and a releasing module;
the receiving module is used for receiving and storing message information sent by the station data server;
the triggering module is used for the receiving unit to transmit the message information corresponding to the interval responder to the vehicle-mounted main control unit;
the releasing module is used for the receiving unit to release all the interval responder message information corresponding to the interval responder linked list information of the outbound responder message information.
11. The inter-zone transponder message triggering system of claim 10,
the receiving module comprises an aging unit;
the time efficiency unit is used for the receiving unit to perform time efficiency detection on the received message information.
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| CN115871743A (en) * | 2023-03-03 | 2023-03-31 | 北京全路通信信号研究设计院集团有限公司 | Line data processing method, control method and device in ordinary line |
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Application publication date: 20200324 |