TRAIN DEPARTURE PROCEDURE BASED ON AUTHORIZATION TO DRIVE BY SIGHT

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit, in particular to a method and system for departure based on on sight mode authorization.BACKGROUND

[0002] In the prior art, the following two manners are usually adopted for departure: (1) departure in a human responsible manner by a driver: in the field of urban rail transit, the driver directly observes a display of a ground signal to drive a train to operate at a low speed, initial positioning of the train is completed after the train passes a ground balise, and then the conditions for acquiring a subsequent movement authority are met.

[0003] On general-speed railways, the driver first inputs station and track information by means of a man-machine interface to complete a rough positioning record of the train, thereby facilitating on-board equipment performing line data initialization; and then the driver directly observes the display of the ground signal to drive the train to operate at a low speed, initial positioning of the train is completed after the train passes the ground signal, and then a train operation monitoring and recording function is available.

[0004] (2) departure by on-board safety equipment reading ground track circuit code sending information: in the field of high-speed railways in China, regardless of CTCS-3 level lines or CTCS-2 level lines, at a departure station of the train, the train is required to depart in a partial monitoring mode at CTCS-2 level. In such mode, after the on-board equipment reads track code sending authority information, a ceiling speed monitoring line with the speed limit being 45 Km / h is generated, the train is allowed to advance, but the train is not informed of how far it can go. When line conditions change, a track circuit will provide prohibition information, and then the on-board equipment directly brake and stop the train. Therefore, the solution is equivalent to informing the train of two-dimensional information on signal development and shutdown, initial positioning of the train is completed after the train passes the ground balise, and then the conditions for acquiring the subsequent movement authority are met.

[0005] Thus, when the train departs, the on-board equipment will be powered on to start operation. Since the train is still at rest, accurate and safe initial positioning information cannot be acquired, data information of ahead lines cannot be acquired, it is also hard for ground control equipment to send an effective movement authority to inform the departure direction of the train.SUMMARY

[0006] The present application aims to provide a method and system for departure based on visual authorizatior, which is generally known as "On Sight Mode" authorization, but is referred to synonymously hereinafter as visual authorization.

[0007] . Visual authorization with departure authority conditions is transmitted by means of train-ground wireless communication, thereby monitoring the safe operation of a train by means of on-board equipment.

[0008] In order to achieve the above purpose, the present application provides the method for departure based on visual authorization defined in the appended independent claim 1.

[0009] Further, the determining, by means of a radio block center system according to current situations, whether visual authorization can be carried out may comprise receiving, by means of the radio block center system, a position report sent by the on-board equipment in the visual mode; or receiving, by means of the radio block center system, information sent by external equipment or determining, according to internal logic, that a latest visual authorization range is changed.

[0010] Further, states of the visual mode may comprise an authorized state and an unauthorized state; and the state of the visual mode is displayed by means of a man-machine interface of the on-board equipment.

[0011] Further, the visual authorization instruction may comprise a visual authorization message M2 and a balise list packet under visual authorization; the visual authorization message is authorization based on a monitoring distance, and the monitoring distance is an allowable operation distance range for the train; if the train is allowed to depart, the monitoring distance is greater than 0 m; the balise list packet under visual authorization is a passing balise group list within a monitoring distance range; and the on-board equipment calculates a speed monitoring curve of the train according to an endpoint of the monitoring distance.

[0012] Further, the balise group list may be as follows: when the train is only roughly positioned and the monitoring distance under visual authorization is greater than 0 m, the balise group list comprises: a track positioning balise, a departure direction outbound balise, and all physical and virtual balise groups within the range of a departure route and a departure section; when the train is precisely positioned by means of a last related balise group (LRBG) and the monitoring distance under visual authorization is greater than 0 m, the balise group list comprises: all physical and virtual balise groups within the range from a current position of the train to a departure section; and when the monitoring distance under visual authorization of the train is 0 m, the balise group list is an empty list.

[0013] Further, monitoring, by means of the on-board equipment according to the visual authorization instruction, the train in real time may comprise if the train crosses a visual authorization endpoint, triggering emergency braking, enabling an overrunning mode, and implementing overrunning protection, wherein the visual authorization endpoint is the endpoint of the monitoring distance of the train; if the train is not allowed to depart, enabling the monitoring distance of the train to be 0 m, that is, the visual authorization endpoint is a nose position of the train; for a balise group existing in the balise list packet, the train normally passing the balise group in a passing process; for a balise group which does not exist in the balise list packet, triggering, by means of the train, emergency braking, enabling the overrunning mode, and implementing overrunning protection; when the on-board equipment does not receive the balise list packet sent by the radio block center system, the train being capable of passing all the balise groups on the way; and when the balise list packet sent by the radio block center system and received by the on-board equipment is empty, the train being incapable of passing any balise group.

[0014] Further, the if the train is not allowed to depart, enabling the monitoring distance of the train to be 0 m may comprise : when the train is in a stopped state, not triggering braking; and when the train is in an operation state, triggering braking, and enabling the overrunning mode.

[0015] Further, the monitoring, by means of the on-board equipment according to the visual authorization instruction, the train in real time may further comprise s: if the visual authorization message received by the on-board equipment is not updated after a predetermined time, triggering service braking for stop; after the train is stopped, resetting, by means of the on-board equipment, the authorized monitoring distance to be 0 m, and clearing the balise list packet; and switching the train from the authorized state of the visual mode to the unauthorized state for advancing.

[0016] Further, calculating, by means of the radio block center system, the monitoring distance range under visual authorization may further comprise: binding, by means of the radio block center system, a departure route associated with an outbound signal according to the train departure information, calculating the monitoring distance under visual authorization, and confirming whether the train departure information is wrong, wherein the monitoring distance under visual authorization is the sum of the lengths of the departure route and a departure section.

[0017] Further, the monitoring distance calculated by the radio block center system may be 0 m in any one of the following situations: interlocking equipment for the radio block center system and the station where the train is located is interrupted; the state of an axle counter between stations is an "occupied" state, and the radio block center system determines, according to internal logic, that a hidden train enters a section; a plurality of train positioning data are detected to be bound to the same departure route; a track state described in departure position information of the train is a non-occupied state; a departure route signal corresponding to a track where the train is located is closed; and a track outbound position described in the train departure information and initial positioning information of the train are not in the same track departure port direction.

[0018] The present application has the technical effects and advantages as follows: 1. in the present application, the function of safe checking the train departure information input by a driver is implemented by means of the ground equipment radio block center system without the specific position of the train, and visual authorization authority information is generated automatically in real time in combination with ahead departure route conditions, thereby providing same to the on-board safety equipment through a train-ground wireless channel so as to monitor the operation of the train; and the on-board equipment is responsible for monitoring the allowable safe driving distance of the train according to the visual authorization authority information, thereby effectively guaranteeing the safety and high efficiency of departure without relying on ground trackside equipment (including track circuits and ground signals), and facilitating engineering construction and reducing maintenance requirements; 2. in the present application, departure authority information does not use track circuit information and the ground signal display manner, so that no complex track circuit information encoding logic control function is needed, and the present application is also easily adapted to urban rails or overseas railways which implement train occupancy inspection in an axle counting manner, better facilitates engineering construction and reducing the maintenance requirements, and has the wider applicability; and 3. the present application is implemented on the basis of a train-ground wireless communication system architecture, can be implemented in most existing train control systems by means of software adaptation without hardware modification, and has the wide easiness in implementation.

[0019] Other features and advantages of the present application will be described in the following specification, and some will become obvious in the specification, or will be understood by implementing the present application. The purposes and other advantages of the present application can be achieved and obtained by means of the structures pointed out in the specification, the claims and the drawings.BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to explain technical solutions in embodiments of the present application more clearly, drawings needed in descriptions of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following descriptions are some embodiments of the present application, and for those of ordinary skill in the art, other drawings can be obtained according to these accompanying drawings without involving any inventive effort. FIG. 1 is a flow chart of steps of a method for departure based on visual authorization in an embodiment of the present application; and FIG 2 is a structure diagram of a system for departure based on visual authorization in an embodiment of the present application. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The technical solutions in embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of embodiments of the present application, not all of them. On the basis of the embodiments of the present application, other embodiments can be obtained by those of ordinary skill in the art

[0022] The scope of protection of the present application is defined by the appended claims.

[0023] In order to overcome the defects in the prior art, for a starting train, an embodiment of the present application discloses a method for departure based on visual authorization, as shown in FIG. 1, includes the following steps: determining, by means of a radio block center system according to current situations, whether visual authorization can be carried out; when the radio block center system is capable of generating a visual authorization instruction, sending, by means of the radio block center system, the visual authorization instruction to on-board equipment through a train-ground wireless channel; and receiving, by means of the on-board equipment, the visual authorization instruction, and monitoring safe operation of a train according to a visual mode.

[0024] The radio block center system determines, according to the current situations, whether visual authorization can be carried out, and the current situations include any one of the following situations: the radio block center system receives train departure information and a movement authority request sent by the on-board equipment; the radio block center system receives a position report sent by the on-board equipment in the visual mode; and the radio block center system receives information sent by external equipment or determines, according to internal logic, that a latest visual authorization range is changed.

[0025] Considering that there are different driving requirements at different use places of the visual mode, the visual mode is divided into an "authorized state" and an "unauthorized state" by an ATP.

[0026] The "authorized state" is applied to authorization and overrunning protection of the starting train under departure based on visual authorization on a track under normal conditions; and the "unauthorized state" is applied to track departure in special situations such as train-ground communication failures and the like or visual advancing in non-track areas such as station throats, intervals lines and the like.

[0027] The current operation state of the visual mode is displayed to a driver by means of a man-machine interface of the on-board equipment in real time, that is, the unauthorized state of the "visual" mode is marked with a yellow bottom border, and the authorized state is marked without a bottom border.

[0028] In the authorized state of the visual mode: when departure route information is open, the man-machine interface displays the visual mode in the authorized state and the maximum allowable speed of 20 Km / h, which means that the driver can control the train to operate to a target stop point at the allowable speed; and when the departure route information is closed, the man-machine interface displays the visual mode in the authorized state and an allowable speed of 0 Km / h, which means prohibition of movement of the train.

[0029] In the unauthorized state of the visual mode: the man-machine interface displays the visual mode in the unauthorized state and a fixed allowable speed, which means that the driver can continue to advance after carrying out confirmation once every time the driver controls the train to operate by a certain distance (for example, 200 m) or for a certain time (for example, 60 s).

[0030] In some specific embodiments, the on-board equipment of the starting train is powered on to be in a standby mode, and the train has no position at the beginning. Before the visual mode of the train is enabled, an on-board equipment startup process, a train integrity inspection operation process, input of the train departure information and confirmation of a visual mode authorization authority condition need to be completed sequentially; and when the nose of train is located on a station track, the driver inputs, by means of the man-machine interface of the on-board equipment, the train departure information, including a station name, a track number and a selected departure direction.

[0031] An electronic map is downloaded in the on-board equipment in advance, and an electronic map document defines the following associated information, as shown in Table 1: Table 1Station Name Pinyin InitialsStation NameStation No.Track No.Mapping Track No. (Internal Line Allocation on Electronic Map)Departure DirectionOutbound Balise No.RQRuoqiang Station066-1-021G3UpOutbound balise No. 1DownOutbound balise No. 2H1G1UpOutbound balise No. 3DownOutbound balise No. 4

[0032] The train departure information being input by means of the man-machine interface of the on-board equipment includes the following operations: inputting, by the driver on the man-machine interface, name pinyin information of a station where the train is located, searching, by means of the on-board equipment by the aid of the electronic map, the name pinyin information to acquire related station name information of the train for display, and confirming the related station name information of the train; and inputting, by the driver, a track number and a departure direction of the train on the man-machine interface, acquiring, by means of the on-board equipment through automatic mapping of the electronic map, outbound balise number information of the train, and forming a train rough positioning information CTCS-136 packet, wherein the format of the packet can be adjusted in a customized manner; and the specific definitions of the format of the packet are as shown in Table 2. Table 2 S / NVariable NameBitDescriptionValueNID_PACKET9Information packet identification code136L_PACKET13Information packet bit45NID_C10Area No.Determined according to train control engineering data sheetNID_BG14Outbound balise group No.Determined according to train control engineering data sheet

[0033] After the train departure information is input, the driver presses a "startup" button, and then the on-board equipment can be triggered to send the movement authority request and the train rough positioning information to the radio block center system (by means of M132+P0+CTCS136); when a departure route signal is open, the radio block center system sends the visual authorization instruction to the on-board equipment; and after the on-board equipment receives the visual authorization instruction, the man-machine interface of the on-board equipment prompts, by means of a text or voice, the driver to confirm that the train is switched to the visual mode, and after the driver carries out the confirmation, the train enables the authorized state of the visual mode.

[0034] In some specific embodiments, the visual authorization instruction is composed of a monitoring distance allowing the train to move and a passing balise list. In the present application, reference is made to ETCS train-ground communication language definitions, and a visual authorization message M2 and a balise list packet under visual authorization are selected to constitute the visual authorization.

[0035] The visual authorization message is authorization based on the monitoring distance, and the monitoring distance is an allowable operation distance range for the train; if the train is allowed to depart, the monitoring distance is greater than 0 m; and the on-board equipment calculates a speed monitoring curve of the train according to an endpoint of the monitoring distance.

[0036] The slope data is calculated by default as per the most unfavorable slope of -6‰. The balise list packet under visual authorization is a passing balise group list within a monitoring distance range; and the balise group list is as follows: when the train is only roughly positioned and the monitoring distance under visual authorization is greater than 0 m, the balise group list includes: a track positioning balise, a departure direction outbound balise, and all physical and virtual balise groups within the range of a departure route and a departure section; when the train is precisely positioned by means of an LRBG and the monitoring distance under visual authorization is greater than 0 m, the balise group list includes: all physical and virtual balise groups within the range from a current position of the train to a departure section; and when the monitoring distance under visual authorization of the train is 0 m, the balise group list is an empty list.

[0037] In some specific embodiments, monitoring, by means of the on-board equipment according to the visual authorization instruction, the train in real time includes: if the train crosses a visual authorization endpoint, triggering emergency braking, enabling an overrunning mode, and implementing overrunning protection, wherein the visual authorization endpoint is the endpoint of the monitoring distance of the train; if the train is not allowed to depart, enabling the monitoring distance of the train to be 0 m, that is, the visual authorization endpoint is a nose position of the train; when the train is in a stopped state, not triggering braking; when the train is in an operation state, triggering braking, and enabling the overrunning mode; for a balise group existing in the balise list packet, the train normally passing the balise group in a passing process; for a balise group which does not exist in the balise list packet, triggering, by means of the train, emergency braking, enabling the overrunning mode, and implementing overrunning protection; when the on-board equipment does not receive the balise list packet sent by the radio block center system, the train being capable of passing all the balise groups on the way; and when the balise list packet sent by the radio block center system and received by the on-board equipment is empty, the train being incapable of passing any balise group.

[0038] In some specific embodiments, the monitoring, by means of the on-board equipment according to the visual authorization instruction, the train in real time further includes: if the visual authorization message received by the on-board equipment is not updated after a predetermined time (for example, 30 s), triggering service braking for stop; after the train is stopped, resetting, by means of the on-board equipment, the authorized monitoring distance to be 0 m, and clearing the balise list packet; and the driver pressing a "visual" button to switch the train from the authorized state of the visual mode to the unauthorized state so as to drive the train forward.

[0039] In some specific embodiments, calculating in real time and providing, by means of the radio block center system, the monitoring distance range under visual authorization to the on-board equipment includes: binding, by means of the radio block center system, a departure route associated with an outbound signal according to the train departure information, calculating the monitoring distance under visual authorization, and confirming whether the train departure information is wrong, wherein the monitoring distance under visual authorization is the sum of the lengths of the departure route and a departure section.

[0040] The monitoring distance calculated by the radio block center system is 0 m in any one of the following situations: interlocking equipment for the radio block center system and the station where the train is located is interrupted; the state of an axle counter between stations is an "occupied" state, and the radio block center system determines, according to internal logic, that a hidden train enters a section; a plurality of train positioning data are detected to be bound to the same departure route, thereby preventing the driver from inputting the incorrect departure information; a track state described in departure position information of the train is a non-occupied state, thereby preventing the driver from inputting the incorrect departure information; a departure route signal corresponding to a track where the train is located is closed; and a track outbound position described in the train departure information and initial positioning information of the train are not in the same track departure port direction, thereby preventing the driver from inputting the incorrect departure information.

[0041] On the basis of the same inventive concept, the present application provides a system for departure based on visual authorization, as shown in FIG 2, including a radio block center system and on-board equipment of a train, wherein the radio block center system is configured to receive train departure information and a movement authority request sent by the on-board equipment, and to generate a visual authorization instruction and send the visual authorization instruction to the on-board equipment when a departure route signal is open; and the on-board equipment is configured to receive the visual authorization instruction, and to monitor safe operation of the train according to a visual mode.

[0042] With regard to the system in the above embodiment, the specific manners in which various unit modules execute operations are described in detail in the embodiments related to the method, and will not be described in detail here.

[0043] In the present application, the function of safe checking the train departure information input by the driver is implemented by means of the ground equipment radio block center system without the specific position of the train, and visual authorization authority information is generated automatically in real time in combination with ahead departure route conditions, thereby providing same to the on-board safety equipment through the train-ground wireless channel so as to monitor the operation of the train. The on-board equipment is responsible for monitoring the allowable safe driving distance of the train according to the visual authorization authority information, thereby effectively guaranteeing the safety and high efficiency of departure without relying on ground trackside equipment (including track circuits and ground signals), and facilitating engineering construction and reducing maintenance requirements.

[0044] Finally, it should be noted that the above description is only for illustrating the preferred embodiments of the present application, and is not intended to limit the present application; although the present application is illustrated in detail with reference to the above-mentioned embodiments, those skill in the art can still amend the technical solutions recited in the above-mentioned embodiments, or perform equivalent substitutions on part of the technical features thereof. The scope of protection of the present application is not limited by the described embodiments but is defined by the appended claims.

Claims

1. A method for departure based on On Sight Mode authorization instruction, comprising: determining, by means of a radio block center system according to current situations, whether On Sight Mode authorization instruction can be carried out; when the radio block center system has determined that On Sight Mode authorization can be carried out, generating the On Sight Mode authorization instruction and sending the On Sight Mode authorization instruction to an on-board equipment, and receiving, by means of the on-board equipment, the On Sight Mode authorization instruction, and monitoring, by means of the on-board equipment, safe operation of a train according to an On Sight Mode; before the On Sight Mode of the train is enabled, an on-board equipment startup process, a train integrity inspection operation process, input of train departure information, and confirmation of an On Sight Mode authorization authority condition, are completed sequentially; wherein the train departure information is input by means of a man-machine interface of the on-board equipment, and the input comprises: inputting, on the man-machine interface, name pinyin information of a station where the train is located, searching, by means of the on-board equipment by the aid of an electronic map, the name pinyin information to acquire related station name information of the train, and confirming the related station name information of the train; and inputting a track number and a departure direction of the train on the man-machine interface, acquiring, by means of the on-board equipment through the aid of the electronic map, outbound balise number information of the train, and forming a train rough positioning information packet; after the train departure information is input, a movement authority request and the train rough positioning information packet are sent to the radio block center system by means of the on-board equipment; wherein the radio block center system determines that On Sight Mode authorization can be carried out and sends the On Sight Mode authorization instruction to the on-board equipment, when a departure route signal is indicating that the departure route is open; and after the on-board equipment receives the On Sight Mode authorization instruction, the train enables an authorized state of the On Sight Mode by means of confirmation; wherein the determining, by means of a radio block center system according to current situations, whether On Sight Mode authorization instruction can be carried out comprises: receiving, by means of the radio block center system, train departure information and a movement authority request sent by the on-board equipment, and when departure route information is indicating that the departure route is open, generating and sending, by means of the radio block center system, the On Sight Mode authorization instruction to the on-board equipment.

2. The method according to claim 1, wherein the determining, by means of a radio block center system according to current situations, whether On Sight Mode authorization instruction can be carried out further comprises: receiving, by means of the radio block center system, a position report sent by the on-board equipment in the On Sight Mode; or receiving, by means of the radio block center system, information sent by external equipment or determining, according to internal logic, that a latest On Sight Mode authorization range is changed.

3. The method according to claim 1, wherein states of the On Sight Mode comprise an authorized state and an unauthorized state; and the state of the On Sight Mode is displayed by means of a man-machine interface of the on-board equipment.

4. The method according to claim 1, wherein the On Sight Mode authorization instruction comprises a On Sight Mode authorization message M2 and a balise list packet under On Sight Mode authorization; the On Sight Mode authorization message is authorization based on a monitoring distance, and the monitoring distance is an allowable operation distance range for the train; if the train is allowed to depart, the monitoring distance is greater than 0 m; the balise list packet under On Sight Mode authorization is a passing balise group list within a monitoring distance range; and the on-board equipment calculates a speed monitoring curve of the train according to an endpoint of the monitoring distance.

5. The method according to claim 4, wherein the balise group list is as follows: when the train is only roughly positioned and the monitoring distance under On Sight Mode authorization is greater than 0 m, the balise group list comprises: a track positioning balise, a departure direction outbound balise, and all physical and virtual balise groups within the range of a departure route and a departure section; when the train is precisely positioned by means of a last related balise group (LRBG) and the monitoring distance under On Sight Mode authorization is greater than 0 m, the balise group list comprises: all physical and virtual balise groups within the range from a current position of the train to a departure section; and when the monitoring distance under On Sight Mode authorization of the train is 0 m, the balise group list is an empty list.

6. The method according to claim 4, wherein monitoring, by means of the on-board equipment according to the On Sight Mode authorization instruction, the train in real time comprises: if the train crosses a On Sight Mode authorization endpoint, triggering emergency braking, enabling an overrunning mode, and implementing overrunning protection, wherein the On Sight Mode authorization endpoint is the endpoint of the monitoring distance of the train; if the train is not allowed to depart, enabling the monitoring distance of the train to be 0 m, that is, the On Sight Mode authorization endpoint is a nose position of the train; for a balise group existing in the balise list packet, the train normally passing the balise group in a passing process; for a balise group which does not exist in the balise list packet, triggering, by means of the train, emergency braking, enabling the overrunning mode, and implementing overrunning protection; when the on-board equipment does not receive the balise list packet sent by the radio block center system, the train being capable of passing all the balise groups on the way; and when the balise list packet sent by the radio block center system and received by the on-board equipment is empty, the train being incapable of passing any balise group.

7. The method according to claim 6, wherein the if the train is not allowed to depart, enabling the monitoring distance of the train to be 0 m comprises: when the train is in a stopped state, not triggering braking; and when the train is in an operation state, triggering braking, and enabling the overrunning mode.

8. The method according to claim 6, wherein the monitoring, by means of the on-board equipment according to the On Sight Mode authorization instruction, the train in real time further comprises: if the On Sight Mode authorization message received by the on-board equipment is not updated after a predetermined time, triggering service braking for stop; after the train is stopped, resetting, by means of the on-board equipment, the authorized monitoring distance to be 0 m, and clearing the balise list packet; and switching the train from the authorized state of the On Sight Mode to the unauthorized state for advancing.

9. The method according to claim 2 or 4, wherein calculating, by means of the radio block center system, the monitoring distance range under On Sight Mode authorization comprises: binding, by means of the radio block center system, a departure route associated with an outbound signal according to the train departure information, calculating the monitoring distance under On Sight Mode authorization, and confirming whether the train departure information is wrong, wherein the monitoring distance under On Sight Mode authorization is the sum of the lengths of the departure route and a departure section.

10. The method according to claim 9, wherein the monitoring distance calculated by the radio block center system is 0 m in any one of the following situations: interlocking equipment for the radio block center system and the station where the train is located is interrupted; the state of an axle counter between stations is an "occupied" state, and the radio block center system determines, according to internal logic, that a hidden train enters a section; a plurality of train positioning data are detected to be bound to the same departure route; a track state described in departure position information of the train is a non-occupied state; a departure route signal corresponding to a track where the train is located is closed; and a track outbound position described in the train departure information and initial positioning information of the train are not in the same track departure port direction.