JP4141380B2 - Polling method and polling system for mobile station apparatus - Google Patents

Description

  The present invention relates to a polling method and system for a mobile station device mounted on a railway vehicle located in an operation management section of a base station device.

Conventionally, an induction wireless communication method has been widely used as a communication method for connecting between ground facilities such as an operation command center and railway vehicles (trains, trains, trains, monorails, etc .: hereinafter simply referred to as “vehicles”). The guided radio communication system includes an operation command center device, a base station device, and a guide line as ground equipment, and a mobile station device including a mobile station on-board antenna as on-vehicle equipment. The guide line is provided along a track on which the vehicle travels, and is divided into sections by a predetermined unit (for example, a substation or a station), and at least one base station apparatus is installed for each section.

  A signal such as voice from the command center apparatus is modulated into a high-frequency signal having an induction radio frequency by the base station apparatus, and electromagnetically radiated from an induction line located in the operation management section of the base station apparatus. This high-frequency signal is received by the receiving antenna of the railway vehicle located on the track in the operation management section by inductive coupling and demodulated by the mobile station device. On the other hand, a signal such as voice input to the mobile station apparatus is modulated into a high-frequency signal having an induction radio frequency by the mobile station apparatus, electromagnetically radiated from the transmission antenna, and received by the induction line. Thereafter, the signal from the mobile station apparatus is received by the base station apparatus, demodulated, and transmitted to the command station apparatus. Using such communication equipment, call voices, emergency alerts, and the like are transmitted between the command center and the vehicle.

  Communication from the mobile station apparatus to the command station apparatus is performed in a format in which the mobile station apparatus responds to polling from the base station apparatus. Specifically, the base station device transmits a polling signal for all railway vehicles scheduled to travel in the operation management section to the guide line provided in the operation management section in a time division manner. When the mobile station apparatus receives a polling signal addressed to its own vehicle, the mobile station apparatus returns a response signal to the polling signal. At this time, if an event such as a call transmission or emergency alert occurs in the own vehicle, the mobile station device transmits data indicating the occurrence of the event (event Data) to the base station apparatus side. With such a configuration, it is possible to prevent contention between mobile station apparatuses.

  Further, the base station device side recognizes that the vehicle is present in the operation management section by receiving a response signal to the polling signal, and the command station device is based on such recognition. Information related to events (emergency calls, in-car broadcasts) was sent to the vehicle.

  In the above-described prior art, one cycle is that a polling signal for all vehicles traveling in the operation management section is serially transmitted in a time division manner, and this one cycle is repeated. For this reason, if the number of vehicles increases, the polling interval for each vehicle will become longer. For example, when 0.5 seconds are required for polling per vehicle, assuming that the number of vehicles (knitting) traveling in the operation management section of the entire line is 100, 50 seconds are required for one cycle.

  Thus, when the polling interval becomes long, the mobile station device of each vehicle must wait until the next polling even if event data to be transmitted immediately occurs, and the event data can be smoothly transmitted to the command station device. Could not be transmitted to.

  Further, as described above, the base station device side recognizes the vehicle existing in the operation management section by polling. A longer polling interval means a longer period for detecting the presence of a specific vehicle, so it takes time to recognize the presence of the vehicle and there is a possibility that information transmission to the vehicle will be delayed. It was.

  One of the objects of the present invention is that even if the total number of vehicles (knitting) traveling in the operation management section of the base station device increases, data related to events from the vehicles existing in the operation management section can be smoothly smoothed. It is to provide a technique that can be transmitted to the base station apparatus side.

  In addition, one of the objects of the present invention is to provide a technology that can recognize vehicles existing in the operation management section at an early stage even if the total number of vehicles (knitting) traveling in the operation management section increases. is there.

The present invention employs the following configuration in order to solve the above-described problems. That is, in the present invention, the base station device transmits a polling signal to its own operation management section assigned to the track on which the railway vehicle travels, and is mounted on the railway vehicle that travels on the track in the operation management section. A polling method for a mobile station apparatus of a base station apparatus that receives a response signal to the polling signal from a mobile station apparatus,
The base station device is
The number (N + 1) of polling signals obtained by adding 1 to the maximum number N (N is a natural number) of railway vehicles that are scheduled to exist simultaneously in the operation management section is sequentially transmitted to the operation management section. Repeat this as one cycle,
If the number of identification information registered in the storage device in which the identification information of the railway vehicles existing in the operation management section is stored at the start of one cycle is 0, one arbitrary railway in the cycle A polling signal (X) for the vehicle and N dummy polling signals (Y) are transmitted to the operation management section,
When a response signal including identification information of a railway vehicle on which the mobile station device is mounted is received from the mobile station device that has received the polling signal (X), the identification information is registered in the storage device. If the number of identification information registered in the storage device is not 0 and less than the maximum number N at the start of one cycle thereafter, each having identification information registered in the storage device Identification information registered in the storage device by transmitting a polling signal addressed to the railway vehicle, one polling signal (X), and the dummy polling signal (Y) to the operation management section in the cycle. Is equal to the maximum number N, a polling signal addressed to each railway vehicle having identification information registered in the storage device and one polling signal (X) are included in the cycle. There comprises transmitting to the operation management section by.

According to the present invention, by receiving a response signal to the polling signal (X), the railway vehicle existing in the operation management section is recognized, and a polling signal addressed to this vehicle is transmitted. Therefore, the number of polling signals to be transmitted in one cycle (the number of polling signal transmissions) can be reduced as compared with the conventional technique in which polling signals for all vehicles traveling (passing) in the operation management section are cyclically transmitted. it can. This allows the polling interval for each vehicle to be
It can be made constant regardless of the number of railway vehicles traveling in the operation management section. Therefore, each railway vehicle can smoothly transmit data and signals to the base station apparatus side. Moreover, the base station apparatus side can manage that the railway vehicle has disappeared from the operation management section.

  Preferably, when the base station apparatus of the present invention fails to receive a response signal to a polling signal addressed to a certain railway vehicle over a predetermined number of cycles, the identification information of the railway vehicle is stored from the storage device. delete. In this way, railway vehicles that are no longer in the operation management section can be excluded from polling targets.

  Preferably, the base station apparatus according to the present invention performs polling in the order of a polling signal addressed to each railway vehicle stored in the storage device, the polling signal (X), and the dummy polling signal (Y). Send a signal. If it does in this way, a polling signal can be given preferentially with respect to the rail vehicle which exists in an operation management section in each cycle.

  Preferably, when a plurality of pieces of identification information are registered in the storage device, the base station device of the present invention transmits a polling signal addressed to each rail vehicle in the registration order. In this way, it is possible to transmit a polling signal addressed to each railway vehicle in the order of recognition on the base station device side (the order in which the railway vehicle enters the operation management section). Moreover, it becomes possible to recognize at an early stage that the railway vehicle is no longer in the operation management section.

  Also preferably, the base station apparatus of the present invention directs the identification information of the railway vehicle registered in the storage device to an adjacent base station apparatus that manages the next operation management section adjacent to its own operation management section. Transmitted through the command station apparatus, and the adjacent base station apparatus performs this identification before the railway vehicle having the identification information transmitted from the base station apparatus through the command station apparatus enters its own operation management section. A polling signal addressed to a railway vehicle having information is transmitted to its own operation management section. In this way, it is possible to wait for the rail vehicle to enter from the previous operation management section in the next operation management section.

In addition, the present invention is a base station apparatus that transmits a polling signal to an operation management section and receives a response signal to the polling signal from a mobile station apparatus mounted on a railway vehicle traveling on a track in the operation management section. There,
A storage device for storing identification information of railway vehicles existing in the operation management section;
A transmission device for transmitting a polling signal to the operation management section;
A receiving device that receives a response signal from the mobile station device that has received the polling signal;
A control device,
The controller is
The operation management section sequentially receives a number (N + 1) of polling signals obtained by adding 1 to the maximum number N (N is a natural number) of railway vehicles that are scheduled to exist simultaneously on the tracks in the operation management section at a predetermined timing. The process of transmitting to the transmitter via the transmitter is repeated as one cycle,
At the start of one cycle, if the number of identification information registered in the storage device that refers to the storage device and stores the identification information of railway vehicles existing in the operation management section is zero, in that cycle A process of transmitting a polling signal (X) for one arbitrary railway vehicle and N dummy polling signals (Y) to the operation management section in the cycle;
When the response signal including the identification information of the railway vehicle on which the mobile station device is mounted is received from the mobile station device that has received the polling signal (X), the identification information Is registered in the storage device, and if the number of identification information registered in the storage device is not 0 and less than the maximum number N at the start of one cycle thereafter, it is registered in the storage device. A polling signal addressed to each railway vehicle having identification information, one polling signal (X), and the dummy polling signal (Y) are transmitted to the operation management section in the cycle and registered in the storage device. If the number of identification information being recorded is equal to the maximum number N, a polling signal addressed to each railway vehicle having identification information registered in the storage device and one polling signal (X) are associated with each other. Transmitted to the traffic control period in the cycle,
It can be specified as a base station device. This base station apparatus can be configured to have the same characteristics as the polling method described above.

According to the present invention, even if the total number of vehicles (knitting) traveling in the operation management section of the base station apparatus increases, data related to events from the vehicles existing in the operation management section is smoothly transmitted to the base station apparatus. Can be transmitted to the side.

  Further, according to the present invention, even if the total number of vehicles (knitting) traveling in the operation management section increases, it is possible to recognize the vehicle existing in the operation management section at an early stage.

  Embodiments of the present invention will be described below with reference to the drawings. The configuration described in the embodiment is an exemplification, and the present invention is not limited to the configuration of the embodiment.

  FIG. 1 shows an example of a guided radio communication system that connects a command center apparatus 10 and a mobile station apparatus 40 mounted on a vehicle (knitting) 2 traveling on a railroad track 1 to which the present invention is applied. Yes. In FIG. 1, a guided radio communication system includes a command station apparatus 10, a plurality (n: n is a natural number) of base station apparatuses 20 (20-1, 20-2,... 20-n), a base station apparatus. It comprises a ground facility including a guide wire 32 connected to a station device via a coupler, and an on-vehicle facility including a mobile station device 40 mounted on the vehicle 2.

  The guide wire 32 is provided along the line 1 and is divided into sections by providing a termination coupler 33 or a line coupler 34 at the terminal end according to a predetermined unit (station, substation). At least one base station apparatus 20 is connected to each other via a coupler 31. In the example illustrated in FIG. 1, each divided section is defined as an operation management section (base station area) 1 to n, and one base station device 20 is provided for each operation management section. Each base station apparatus 20 is connected to the command center apparatus 10 via a communication line.

  The command station apparatus 10 includes an operation management apparatus that manages and manages each operation management section. As the operation management apparatus, an operation panel unit 16 for an operator to operate the command station apparatus 10 and an operation by the operation panel unit 16 are performed. The control unit 15 that controls the operation of the command center apparatus 10 according to the above, an interface unit 17 that transmits and receives data and signals, a microphone 13 and a transmission amplifier 14, a reception amplifier 12 and a monitor speaker 11 are provided. .

  The audio signal input from the microphone 13 is amplified by the transmission amplifier 14 and transmitted to the base station apparatus 20 corresponding to the transmission destination via the interface unit 17 in accordance with the control content of the control unit 15. The audio signal received by the interface unit 17 is amplified by the reception amplifier 12 and output from the monitor speaker 11. A signal received by the interface unit 17 is input to the control unit 15, and the control unit 15 causes a display device (not shown) of the operation panel unit 16 to display information based on the signal.

  The control unit 15 is mainly configured with an auxiliary memory including a CPU, a main memory, and a non-volatile storage device, and loads various programs stored in the auxiliary memory into the main memory and executes them. The operation of the command center apparatus 10 and the operation of each base station apparatus 20 are controlled.

Each base station device 20 has the same configuration, an interface unit 21 connected to the command center device 10 via a communication line, and a control device 22 that performs processing related to polling (the storage device and the control of the present invention). Device), transmission amplifier 23, call transmitter 24, emergency transmitter 25 (corresponding to the transmission device of the present invention), control unit 27 for controlling the entire base station device 20, and call receiver. 28, an emergency receiver 29 (corresponding to the receiving apparatus of the present invention), and a receiver amplifier 30.

  A call signal from the command center apparatus 10 is received by the interface unit 21, amplified by the transmission amplifier 23, and modulated by the call transmitter 24 to a high-frequency signal S 1 having an induction radio frequency, and a coupler 31 and a line coupler 34. Is input to the guide wire 32 through the guide wire 32 and electromagnetically radiated from the guide wire 32.

Further, an emergency signal or a data signal (for example, a polling signal (also referred to as a poll signal)) from the command station apparatus 10 or the control apparatus 22 is amplified as necessary, modulated into a high-frequency signal by the transmitter 25, and the coupler 31. The signal is input to the guide wire 32 via the line coupler 34 and is electromagnetically radiated from the guide wire 32.

On the other hand, the high frequency signal S2 from the mobile station apparatus 40 received by inductive coupling on the induction line 32 is input to the base station apparatus 20 via the line coupler 34 and the coupler 31, and the high frequency signal S2 is a call voice signal. If the signal is modulated, it is received and demodulated by the call receiver 28, amplified by the amplifier 30, and transmitted to the command station apparatus 10 via the interface unit 21. Further, if the high-frequency signal S2 is an emergency signal or a data signal (for example, a response data or event generation data signal for a pole signal), it is received by the emergency receiver 29 and input to the control device 22 and the amplifier 30. The signal amplified by the amplifier 30 is transmitted from the interface unit 21 to the command center apparatus 10.

  The mobile station device 40 is a train radio mobile station device that receives a high-frequency signal S1 from the control unit 41 that performs processing related to polling and processing related to event transmission and reception and the induction wire 32 by inductive coupling, and a high-frequency signal. A transmission / reception antenna 42 that transmits S2 toward the guide wire 32, a transmission unit 43 that amplifies the signal from the control unit 41 and modulates the signal to a high-frequency signal S2, and a high-frequency signal S1 received by the antenna 42 And a receiving unit 44 provided to the control unit 41.

The control unit 41 is configured mainly with a CPU, a main memory, and an auxiliary memory, and performs a process related to polling from the base station apparatus 20 by executing a program stored in the auxiliary memory. That is, when the control unit 41 receives a pole signal from the reception unit 44, the control unit 41 determines whether or not to respond to the pole signal, and in the case of responding, the identification information (train number:
A response signal including the information stored in advance in the auxiliary memory constituting the control unit 41 is generated and provided to the transmission unit 43.

The control unit 41 is connected to an input device and an output device of the mobile station device 40 (not shown), and when an event (call, emergency alert, etc.) input via the input device is input, Assuming that an event has occurred, event occurrence data (event data) is transmitted at a predetermined timing (within the reception time prepared on the base station device 20 side) triggered by transmitting a response signal. Moreover, when the control part 41 receives the data and information which concern on the event from the command station apparatus 10 from the receiving part 44, the information which concerns on these is output to an output device as needed, and it alert | reports to the crew of a vehicle To do.

  The mobile station device 40 can transmit signals and data to the command center device 10 by responding to polling (data transmission request) from the base station device 20 in the operation management section in which the host vehicle (formation) is traveling. it can. Moreover, the base station apparatus 20 can recognize that the vehicle (composition) exists in its own operation management section by receiving a response signal to the polling signal (pole signal), and the command station apparatus 10 can The vehicle (organization) existing in each operation management section can be recognized.

  When the own vehicle enters each operation management section due to the traveling of the own vehicle, the mobile station device 40 of each vehicle operates from the guide line 32 provided in the operation management section while traveling in the operation management section. It is possible to receive a poll signal from the base station apparatus 20 that manages the management section. The operation management section 1 of the base station device 20-1 is adjacent to the garage of vehicles, and each vehicle (knitting) coming out of the garage enters.

Hereinafter, processing related to polling will be described in detail. FIG. 2 is a diagram illustrating an example of poll signal transmission processing by the base station device 20-1, and FIG. 3 is a diagram illustrating an example of a management table 22 A managed by the control device 22. FIG. 4 is a diagram illustrating an example of response signal reception processing by the base station device 20-1, and FIG. 5 is a diagram illustrating an example of a management table 15A managed by the control unit 15 of the command center device 10. . FIG. 6 is a diagram illustrating an example of a train number reception process performed by the adjacent base station device, and FIG. 7 is a diagram illustrating an example of a poll signal transmission process performed by the adjacent base station device.

  The control device 22 of each base station device 20 is mainly configured with an auxiliary memory composed of a CPU, a main memory, and a nonvolatile memory device, and loads various programs stored in the auxiliary memory into the main memory. By executing, control related to polling is performed. The control device 22 can also be configured as a dedicated hardware chip configured with an electronic circuit or the like.

  For example, the control device 22 periodically and repeatedly transmits a pole signal based on an HDLC procedure (High-level Data Link Control procedure) to the guide line 32 in the operation management section. At this time, the control device 22 serially time-divides N + 1 pole signals obtained by adding 1 to the maximum number N (N is a natural number) of vehicles (knitting) that are scheduled to exist simultaneously in the operation management section. Transmission is a one-cycle process, and this one cycle is repeated. The contents of each poll signal transmitted in one cycle are controlled according to the registered contents of the management table 22A prepared on the non-volatile storage device constituting the control device 22. In this example, the maximum number N = 3.

As shown in FIG. 3, the management table 22A is composed of a plurality of records including an operating train number (hereinafter sometimes simply referred to as “train number”), the number of no-responses, and a flag (0/1). . The driving train number is identification information of the vehicle (formation). The operating train number may also be referred to as “train number” or “operation number”. The identification information may be any name and expression method as long as it can identify the railway vehicle (formation).

  The number of times of no response is the number of times of no response to the pole signal. The flag is a flag for controlling non-transmission (“0”) / transmission (“1”) of the pole signal for the corresponding operation train number. However, the flag is used in base stations after the base station device 20-2 and is not used in the base station device 20-1.

  Although not shown in the figure, the management table 22A is also configured to register the registration time of train numbers, and the registration order of train numbers from the registration time to the management table 22A is specified. It is configured.

  As shown in the example of FIG. 2, the control device 22 of the base station device 20-1 refers to the management table 22A at the start of one cycle (step S01), and the number of train numbers registered in the management table 22A. It is determined whether M (M is a natural number) is 0 (step S02). At this time, if the train number registration number M is 0 (S02; YES), the process proceeds to step S04. If not (S02; NO), the process proceeds to step S03.

In step S04, assuming that there is no vehicle (knitting) present in the operation management section 1, the control device 22 performs N + 1 = 4 polling with the fixed patterns (X), (Y), (Y), (Y). Data is created and the process proceeds to step S07.

  Here, the pole signal (X) is a pole signal addressed to an arbitrary vehicle (composition), and the mobile station device 40 does not transmit a response signal for a predetermined time (for example, 10 seconds). It is configured to respond to signal (X).

Further, the mobile station device 40 is configured not to respond to the poll signal (X) received thereafter when responding to the poll signal (X) in the current operation management section. For example, the mobile station device 40 controls a flag indicating whether or not there is a response to the poll signal (X) for each operation management section (for example, when the mobile station device 40 responds to the poll signal (X), the flag is turned on. This can be realized by not responding to the pole signal (X) while the signal is on.

The pole signal (Y) is a dummy pole signal.
Even if Y) is received, it does not respond. The dummy pole signal is prepared for securing one cycle time even when there is no vehicle to be polled.

In step S03, the control device 22 determines whether or not the train number registration number M is 0 <M <N (step S03). At this time, if the number M of train numbers is 0 <M <N (S03; Y
ES), the process proceeds to step S05; otherwise (S03; NO), the process proceeds to step S05.
Proceed to 06.

  In step S05, the control device 22 creates polling data based on the train number and the patterns (X) and (Y). That is, the control device 22 generates N + 1 pole signals including a pole signal addressed to each registered train number, a pole signal (X), and one or two dummy pole signals (Y). At this time, the number of pole signals (X) is 1 regardless of the number of registered train numbers. The number of dummy pole signals (Y) varies according to the train number registration number M, and (N−M) pole signals (Y) are generated.

  In step S06, the control device 22 creates polling data based on the train number and the X pattern. That is, the control device 22 generates N + 1 pole signals including a pole signal addressed to each registered train number and a pole signal (X).

In step S07, the control device 22 performs transmission processing of the polling data created in each of steps S04, S05, and S06. That is, N + 1 pole signals related to the train numbers, X and Y are sent in series in a time division manner. At this time, each pole signal is transmitted in the order of train number, (X), (Y). That is, in the transmission process through step S04, each poll signal is transmitted in the order of (X), (Y), (Y), (Y). Further, in the transmission process through step S05, train numbers A, (X), (Y), (Y), or train numbers “A”, train numbers “B”, (X), (Y) in this order. A poll signal is transmitted. Further, in the transmission process after step S06, the pole signals are transmitted in the order of train number “A”, train number “B”, train number “C”, (Y).
Here, train numbers are assigned to train numbers “A”, “B”, and “C” in the order of registration in the management table 22A.

  For example, 0.5 seconds is set as the transmission period of the poll signal. Therefore, the control device 22 transmits a poll signal every 0.5 seconds in one cycle, and repeats such processing with 0.5 × (N + 1) = 2 seconds as one cycle. Thereby, a pole signal is transmitted to a specific vehicle (composition) at a cycle of 2 seconds.

  Each pole signal is input from the control device 22 to the transmitter 26, modulated into a high-frequency signal S 1, and electromagnetically radiated from the induction wire 32 through the coupler 31 and the line coupler 32. In this way, the poll signal from the base station device 20-1 is transmitted to the operation management section 1. At this time, if there is a vehicle (knitting) in the operation management section 1, a pole signal is received by the mobile station device 40 of the vehicle (knitting) in the operation management section 1.

When the received poll signal is addressed to the own vehicle and the response signal is not transmitted for a predetermined time (for example, 10 seconds), the control unit 41 of the mobile station apparatus 40 A response signal to the signal (X) is transmitted. When the response signal is transmitted from the control unit 41, the response signal is input to the control device 22 via the transmission unit 43, the antenna 42, the guide wire 32, the line coupler 34, the coupler 31, and the receiver 29. .

The control device 22 of the base station device 20-1 is configured to perform reception processing as shown in the example of FIG. 4 for each poll signal. As shown in FIG. 4, the control device 22 waits for a response signal for each poll signal (S11), and the waiting time times out (S11).
If a response signal is received before (S12; YES) (S11; YES), the process proceeds to step S13.

  In step S13, the control device 22 refers to the management table 22A to determine whether or not the same train number has already been registered. If it has been registered (S13; YES), the process proceeds to step S16, so If not (S13; NO), the process proceeds to step S14. In step S14, the control device 22 registers the train number included in the response signal in the management table 22A, and advances the process to step S15.

  In step S15, the control device 22 transmits the train number registered in the management table 22A in step S14 toward the adjacent base station (base station device 20-2) (S15). Such a train number is transmitted to the control unit 15 of the command center apparatus 10 via the interface unit 21, and is notified from the control unit 15 to the base station apparatus 20-2 corresponding to the adjacent base station apparatus.

In step S <b> 16, the control device 22 performs an event reception process from the mobile station device 40. That is, the control device 22 prepares an event occurrence data reception time from the mobile station device 40 that has transmitted the response signal, receives event occurrence data that arrives within this reception time, and sends it to the command center device 10 as necessary. Notice. Thereafter, the control device 22 ends the reception process for the poll signal. On the other hand, when the reception time of the response signal has timed out (S12; YES), the control device 22 adds 1 to the number of corresponding no-responses in the management table 22A (step S17).

  Subsequently, the control device 22 determines whether or not the non-response count has reached a predetermined number (for example, 3) or more (step S18). At this time, when the number of non-responses exceeds a predetermined number (S18; YES), the control device 22 deletes the train number whose number of non-responses exceeds the predetermined number from the management table 22A (step S19). . At this time, the control device 22 notifies the command station device 10 of the deleted train number (step S20). When the number of non-responses is less than the predetermined number (S18; NO) and when the process of step S20 ends, the control device 22 ends the reception process.

  As described above, the train number registration and deletion process for the management table 22A is performed, whereby the vehicles existing in the operation management section 1 are managed. Then, the contents (pattern) of the poll signal in one cycle are changed based on the contents registered in the management table 22A. The command station apparatus 10 is also notified that the train number has been deleted from the management table 22A.

In the process shown in FIG. 2, a new vehicle enters the operation management section 1 after it is detected in the operation management section 1 that a certain vehicle has exited the operation management section 1 (no response three times). It is assumed that On the other hand, a certain vehicle actually leaves the operation management section 1, but before the base station device 20-1 detects no response of the vehicle three times, a new vehicle enters the operation management section 1. It is possible to enter. In order for the base station device 20 to detect the presence of such a vehicle, the number of transmissions of the poll signal in one cycle is N + 1, and the poll signal (X) is transmitted. When a new vehicle responds to the pole signal (X) and before no response is detected three times for a certain train number, the management table 22A actually contains the operation management section 1
The number of vehicles existing in the vehicle is 3, but four train numbers are registered. In this case, the control device 22 can generate polling data addressed to the four train numbers in accordance with the registered contents of the management table 22A, and transmit each poll signal in one cycle. Thereafter, when no response is detected three times, in the next cycle, the pole signal (X) is transmitted instead of the pole signal addressed to the train number that has not responded three times.

By the way, the contents of the management table 22A in each base station apparatus 20 are notified to the control unit 15 of the command station apparatus 10 and managed by the management table 15A that the control unit 15 has. As shown in FIG. 5, the management table 15 </ b> A is configured by a set of tables (15 </ b> A <b> 1 to 15 </ b> An) similar to the management table 22 </ b> A possessed by each base station device 20. In accordance with the management table 15A (train number registration, change, deletion, flag control), train numbers are managed, and a copy of the management table 22 of each base station apparatus 20 is provided as the management table 15A. Has been.

Specifically, when the control unit 15 receives a train number from each base station device 20, the control unit 15 sends the train number (for example, “A”) to the received base station device (for example, the base station device 20-1). The train number “A” registered in the management table (for example, 15A1, 15A2) for the adjacent base station device (for example, the base station device 20-2) for the base station device and registered in the management table 15A2 for the adjacent base station device. Is turned off (“0”). Furthermore, the control unit 15 notifies the train number “A” and the flag-off command to the base station device 20-2 corresponding to the adjacent base station device.

  Then, when the adjacent base station apparatus (base station apparatus 20-2) receives the train number “A” and the flag-off command as shown in FIG. 6 (step S21), the same train number “ It is determined whether or not “A” exists (step S22). If not, the notified train number “A” is registered in the management table 22A (step S23), and the flag for the train number “A” is turned off (“0”). ") Is set (step S24).

After that, when receiving a notification of the second train number (for example, “B”) from the base station device 20-1, the control unit 15 stores the next train number “in the management tables 15A1 and 15A2.
B ”is registered, the flag for the train number“ A ”in the management table 15A2 is turned on (“ 1 ”), and the flag for the train number“ B ”is turned off. 20-2 is notified of the flag on command of train number “A”, the train number “B”, and this flag off command, and the control device 22 of the base station device 20-2 receives the notification and manages it. Referring to the table 22A, the flag for the train number “A” is turned on, the train number “B” is registered, and the flag is turned off. When the train number indicating that the vehicle of 2) has entered the previous operation management section (in this case, the operation management section 1) is received from the previous base station device, the adjacent base station device of the base station device (No. 1 here Next) command the adjacent base station device to turn on the flag for the train number that entered the management range, and the adjacent base station device enters the operation management section of the adjacent base station device. Even if not, a pole signal addressed to the train number is transmitted to the operation management section, and the vehicle enters a state of waiting for a vehicle having the train number to enter.

  That is, the control unit 22 of the base station device 20-2 corresponding to the adjacent base station device performs polling processing as shown in FIG. 7 under the control of the flag for such a train number. That is, the control device 22 of the base station device 20-2 creates polling data similar to that shown in FIG. 2 for the flag-on train number registered in the management table 22A, and performs transmission processing thereof.

Further, the control device 22 of the base station device 20-2 performs a response signal reception process as shown in FIG. However, when the control device 22 of the base station device 20-2 first receives a response signal of a pole signal to a flag-on train number, the control device 22 notifies the control unit 15 of the command center device 10 of the train number. In response to this, the control unit 15 uses the adjacent base station device (
Here, the train number and flag-off command are notified to the base station apparatus 20-3). The base station device 20-3 performs the same operation as the base station device 20-2, and before the vehicle enters its own operation management section, the base station device 20-3 operates its own pole signal addressed to the train number of the vehicle. Send to the management section. In this way, polling for a certain train number is performed seamlessly across the operation management section.

  In addition, when a pole signal addressed to the train number of the vehicle is transmitted to the operation management section prior to the entry of the vehicle, the response to the pole signal is three times or more until a response signal is received once from the vehicle. Even if not, the train number is not deleted from the management table 22A. Such control can be realized as follows, for example. That is, each base station apparatus 20 after the base station apparatus 20-2 sets another flag (referred to as “deletion prevention flag”) when the polling signal transmission / non-transmission flag of the management table 22A is turned on. turn on. While this deletion prevention flag is on, the train number is not deleted even if the number of no-responses is 3 or more. And when the response signal with respect to the train number is received, a deletion prevention flag is turned off. While the deletion prevention flag is off, the train number is deleted when the non-response count becomes 3 or more. In this way, it is possible to prevent the train number from being deleted when the number of non-responses with respect to the pole signal for standby becomes equal to or greater than a predetermined number.

  FIG. 8 is a diagram illustrating an operation status of a vehicle (composition) that is a target of the above-described polling process, and FIG. 9 is a diagram illustrating an example of polling based on the above-described polling process. As shown in FIG. 8, the operation management section 1 of the base station device 20-1 starts from the first departure station, and the vehicle (organization) from the garage (the left side of the page of FIG. 8) meets the departure time, It is in a state of entering on the track 1 of the operation management section 1 in order.

For example, the first vehicle (train number 01: “train 01”) enters the operation management section 1 at time T1, and the next vehicle (train number 02: “train 02”) enters the operation management section at time T2. 1 enters the operation management section 1 at time T3 and the next vehicle of train 02 (train number 05: “train 05”), and at time T4, the next vehicle of train 05 (train number 04: “ Organization 0
4 ”) and the formation 01 enters the next operation management section 2.

When there is no vehicle in the operation management section 1, the base station device 20-1 uses the poles based on the fixed patterns (X), (Y), (Y), (Y) for the operation management section 1 Send the signal repeatedly. The base station apparatus 20-2 also repeatedly transmits a poll signal based on the fixed pattern (FIG. 9 (a)).

  Thereafter, at time T1, when the train 01 enters the operation management section 1, the mobile station device 40 of the train 01 sends a response signal including its own train number “01” to the pole signal (X). It transmits to the station apparatus 20-1. When the base station apparatus 20-1 receives the train number “01” included in the response signal, the base station apparatus 20-1 registers the train number “01” in the management table 22A and notifies the command center apparatus 10 of it.

As a result, the base station apparatus 20-1 starts the poll signal in the pattern of “01”, (X), (Y), (Y) including the poll signal addressed to the train number “01” from the next cycle. Send. On the other hand, the base station apparatus 20-2 registers the train number “01” from the command center apparatus 10, but since the flag is off, the base station apparatus 20-2 continues to transmit a fixed pattern pole signal (FIG. 9B).

  Thereafter, at time T2, when the train 02 enters the operation management section 1, the mobile station device 40 of the train 02 responds to the pole signal (X) from the base station device 20-1, and the train number “ A response signal including 02 ″ is transmitted to the base station apparatus 20-1. When the base station device 20-1 receives the train number “02” included in the response signal, the base station device 20-1 registers the train number “02” in the management table 22A and notifies the command center device 10 of it.

As a result, the base station apparatus 20-1 starts the pattern “01”, “02”, (X), (Y) including the pole signal addressed to the train numbers “01” and “02” from the next cycle. Then, a poll signal is transmitted. On the other hand, the base station device 20-2 registers the train number “02” in accordance with the notification from the command center device 10 (flag off) and turns on the flag of the train number “01”. From the next cycle, “01”, (X), (Y), (Y) pole signals are transmitted, and the organization 0
It will be in the state which waits for 1 to enter the operation management area 2 (FIG.9 (c)).

  Thereafter, at time T3, when the train 05 enters the operation management section 1, the mobile station device 40 of the train 05 responds to the pole signal (X) from the base station device 20-1 with its own train number “ A response signal including 05 ″ is transmitted to the base station apparatus 20-1. When the base station apparatus 20-1 receives the train number “05” included in the response signal, the base station apparatus 20-1 registers the train number “05” in the management table 22A and notifies the command center apparatus 10 of it.

Thereby, the base station apparatus 20-1 starts the train numbers “01”, “02” from the next cycle.
The base station apparatus 20-2 transmits the poll signal in the pattern of “01”, “02”, “05”, (X) including the poll signal addressed to “05” and “05”. In accordance with the notification from the apparatus 10, the train number “05” is registered (flag off), and the flag of the train number “02” is turned on. From the next cycle, “01”, “02”, (X), (Y) becomes a state of transmitting a pole signal, and waits for the formation 02 to enter the operation management section 2 (FIG. 9 (d)).

  After that, when the train 01 comes out of the operation management section 1 and enters the operation management section 2, the base station device 20-1 cannot receive a response signal from the composition 01. When the base station apparatus 20-1 continuously detects no response to the pole signal addressed to the set 01 three times, it is assumed that the set 01 has left the operation management section 1, and the train number “01” is received from the management table 22A. delete. At this time, if the train 04 has not entered the operation management section, a pole signal is transmitted from the base station apparatus 20-1 in a pattern of “02”, “05”, (X), (Y).

Thereafter, at time T4, when the train 04 enters the operation management section 1, the base station device 20-1 determines the train number “04” based on the response signal from the train 04 in response to the pole signal (X). Is registered in the management table 22A and notified to the command center apparatus 10. As a result, the base station apparatus 20-1 enters a state of transmitting a poll signal in the pattern of “02”, “05”, “04”, (X) from the next cycle (FIG. 9 (e)). At this time, if the train 01 is still present in the operation management section 2, the base station device 20-2 transmits a pole signal in a pattern of “01”, “02”, “05”, (X). Thereafter, such processing is continuously performed.

  In addition, the control part 41 of each mobile station apparatus 40 transmits the response signal with respect to a pole signal, and when an event (call transmission, emergency report, emergency report, deadman, etc.) has occurred in the own vehicle. Then, event occurrence data indicating the occurrence of the event is generated, and the event occurrence data is transmitted at a reception time prepared in advance by the base station apparatus 20. The event occurrence data is transmitted to the command center apparatus 10 via the base station apparatus 20.

Moreover, in the command center apparatus 10, the control part 15 exists in each operation management area by registering and deleting the train number with respect to each table 15A1-15An of the management table 15A according to the notification from each base station apparatus 20. Can recognize the train number. The contents of recognition can be displayed on a display device included in the operation panel unit 16. The operator of the command center apparatus 10 can transmit an event (transmission, emergency call, etc.) to a specific vehicle as necessary according to the display contents.

  In addition, the example shown in FIG. 8 showed the example of the single line. In the case of double lines, separate guide lines and base station apparatuses are prepared for the uplink and the downlink, respectively, and polling as described above is performed individually for the uplink and the downlink.

[Action / Effect]
According to the embodiment, the number of poll signals transmitted in one cycle (the number of transmissions of poll signals, that is, the number of polling) is the operation management section regardless of the number of vehicles (knitting) passing through the operation management section. The maximum number (N + 1) of vehicles (knitting) that exist at the same time. For this reason, it is prevented that a polling interval becomes long with the number of vehicles. Therefore, the mobile station device 40 of each vehicle existing in the operation management section can smoothly transmit data and signals to the command center device 10. Moreover, the base station apparatus side can recognize the vehicle which exists in the operation management area at an early stage.

  In the above-described embodiment, the example in which the polling method according to the present invention is applied to a guided radio communication system in which a base station device and a mobile station device communicate via a guided radio channel has been described. However, the present invention can be applied to train radio including this induction radio communication. For example, information may be exchanged between the base station device and the mobile device by train wave radio (SR) as train radio. In this case, instead of the guide wire 32 shown in FIG. 1, a coaxial cable is arranged so as to be pulled out from the base station apparatus 20, a transmission / reception antenna connected to the coaxial cable, and a mobile station apparatus provided on the railway vehicle side. Radio waves are transmitted / received to / from a transmitting / receiving antenna connected to the.

FIG. 1 is a diagram illustrating an example of a guided radio communication system that connects a command center device and a base station device, and a mobile station device mounted on a vehicle (knitting) traveling on a railroad track. FIG. 2 is a diagram illustrating an example of polling signal transmission processing by the base station apparatus. FIG. 3 is a diagram illustrating an example of a management table managed by the control apparatus of the base station apparatus. FIG. 4 is a diagram illustrating an example of response signal reception processing by the base station apparatus. FIG. 5 is a diagram illustrating an example of a management table managed by the control unit of the command center apparatus. FIG. 6 is a diagram illustrating an example of a train number reception process performed by an adjacent base station device. FIG. 7 is a diagram illustrating an example of a poll signal transmission process performed by an adjacent base station apparatus. FIG. 8 is a diagram illustrating an operation status of a vehicle (knitting) that is a target of processing related to polling. FIG. 9 is a diagram illustrating a polling signal pattern based on polling processing and the contents of a management table in an adjacent base station apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Command station apparatus 15 Control part 15A Management table 20 Base station apparatus 22 Control apparatus 22A Management table 26 Transmitter 29 Receiver 40 Mobile station apparatus

Claims (8)

The base station device transmits a polling signal to its own operation management section assigned to the track on which the railway vehicle travels, and from the mobile station device mounted on the railway vehicle traveling on the track in this operation management section. A polling method for a mobile station device that receives a response signal to the polling signal,
The base station device is
The number (N + 1) of polling signals obtained by adding 1 to the maximum number N (N is a natural number) of railway vehicles that are scheduled to exist simultaneously in the operation management section is sequentially transmitted to the operation management section. Repeat this as one cycle,
If the number of identification information registered in the storage device in which the identification information of the railway vehicles existing in the operation management section is stored at the start of one cycle is 0, one arbitrary railway in the cycle A polling signal (X) for the vehicle and N dummy polling signals (Y) are transmitted to the operation management section,
When a response signal including identification information of a railway vehicle on which the mobile station device is mounted is received from the mobile station device that has received the polling signal (X), the identification information is registered in the storage device. If the number of identification information registered in the storage device is not 0 and less than the maximum number N at the start of one cycle thereafter, each having identification information registered in the storage device Identification information registered in the storage device by transmitting a polling signal addressed to the railway vehicle, one polling signal (X), and the dummy polling signal (Y) to the operation management section in the cycle. Is equal to the maximum number N, a polling signal addressed to each railway vehicle having identification information registered in the storage device and one polling signal (X) are included in the cycle. Polling method for the mobile station apparatus of the base station apparatus includes transmitting to the operation management section by household. If the base station device fails to receive a response signal to a polling signal addressed to a certain railway vehicle over a predetermined number of cycles, the base station device further deletes the identification information of the railway vehicle from the storage device. The polling method according to claim 1. The base station apparatus transmits polling signals in order of a polling signal addressed to each railway vehicle stored in the storage device, the polling signal (X), and the dummy polling signal (Y). Or the polling method of 2 description. The polling according to any one of claims 1 to 3, wherein, when a plurality of pieces of identification information are registered in the storage device, the base station device transmits a polling signal addressed to each railway vehicle in the order of registration. Method. The base station device sends the identification information of the railway vehicle registered in the storage device to an adjacent base station device that manages the next operation management section adjacent to its own operation management section via the command center apparatus. Send
The adjacent base station device is addressed to the rail vehicle having the identification information before the rail vehicle having the identification information transmitted from the base station device via the command center device enters its own operation management section. The polling method according to claim 1, further comprising transmitting a polling signal to its own operation management section. A polling system for a mobile station apparatus that transmits a polling signal to an operation management section and receives a response signal to the polling signal from a mobile station apparatus mounted on a railway vehicle traveling on a track in the operation management section,
A storage device for storing identification information of railway vehicles existing in the operation management section;
A transmission device for transmitting a polling signal to the operation management section;
A receiving device that receives a response signal from the mobile station device that has received the polling signal;
A control device,
The controller is
The operation management section sequentially receives a number (N + 1) of polling signals obtained by adding 1 to the maximum number N (N is a natural number) of railway vehicles that are scheduled to exist simultaneously on the tracks in the operation management section at a predetermined timing. The process of transmitting to the transmitter via the transmitter is repeated as one cycle,
At the start of one cycle, if the number of identification information registered in the storage device that refers to the storage device and stores the identification information of railway vehicles existing in the operation management section is zero, in that cycle A process of transmitting a polling signal (X) for one arbitrary railway vehicle and N dummy polling signals (Y) to the operation management section in the cycle;
When the response signal including the identification information of the railway vehicle on which the mobile station device is mounted is received from the mobile station device that has received the polling signal (X), the identification information Is registered in the storage device, and if the number of identification information registered in the storage device is not 0 and less than the maximum number N at the start of one cycle thereafter, it is registered in the storage device. A polling signal addressed to each railway vehicle having identification information, one polling signal (X), and the dummy polling signal (Y) are transmitted to the operation management section in the cycle and registered in the storage device. If the number of identification information being recorded is equal to the maximum number N, a polling signal addressed to each railway vehicle having identification information registered in the storage device and one polling signal (X) are associated with each other. Transmitted to the traffic control period in the cycle,
Polling system for mobile station equipment. The control device further includes deleting the identification information of the railway vehicle from the storage device when a response signal to a polling signal addressed to a certain railway vehicle cannot be received over a predetermined number of cycles. The polling system according to claim 6. The said control apparatus notifies the command center apparatus in order to transmit the identification information of the railway vehicle registered into the said memory | storage device to the adjacent management apparatus which manages the adjacent operation management area of the said operation management area. 8. The polling system according to 6 or 7.

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