JP6178192B2 - Closing device - Google Patents

Description

The present invention relates to a closed Seok device.

  Conventionally, a base radio type train control device is known as one of special automatic closing devices (electronic code check type). This type of base radio type train control device is a train between a ground radio network in units of one station and an on-board device mounted on each train traveling on the route at each station scattered on the route. The train operation is managed by wirelessly transmitting information on the train. As for the above-described wireless transmission technology for information on trains, for example, those disclosed in Patent Documents 1 and 2 are known.

  The technology disclosed in Patent Document 1 has a plurality of base stations that are connected to a plurality of command consoles in a wired manner to transmit and receive signals, and wirelessly send signals to trains from any one of these base stations It is a train radio system that transmits and receives. When the base station constituting the train wireless system of Patent Document 1 wirelessly transmits a signal to the train, a tone signal adding means for adding a tone signal to be transmitted together with the signal to the head of the transmission signal, and a tone for the received signal A discriminating means for discriminating whether or not a signal is added; and a control means for performing control to prevent the received signal from being transmitted to the command console when it is discriminated that a tone signal is added to the received signal by the discriminating means; It has. That is, the train radio system of Patent Document 1 adds a tone signal to the head of a transmission signal in order to avoid radio communication with another system.

  On the other hand, Patent Document 2 discloses an on-vehicle device that is mounted on a vehicle and performs communication using radio waves loaded with data with a base station. The on-board device of Patent Document 2 detects a radio wave from a base station, detects a reception level of the detected radio wave, a radio wave detection unit that specifies a position coordinate of the vehicle, and a radio wave detection unit. A position coordinate acquisition means for acquiring a position coordinate of a base station from which radio waves are detected, a communication means for performing communication using radio waves loaded with data between a base station from which radio waves are detected by the radio wave detection means, and a position By comparing the position coordinates of the vehicle specified by the coordinate specifying means with the position coordinates of the base station acquired by the position coordinate acquiring means, the base station where the radio wave is detected by the radio wave detecting means exists within a predetermined distance of the vehicle. For each base station, from among the base stations determined to be within a predetermined distance of the vehicle, select a base station having a detected radio wave reception level greater than a predetermined value and control the communication means. And And a communication control means for attempting to communicate with the-option base stations. That is, the on-board device of Patent Document 2 selects a base station to communicate based on the reception level and position coordinate information.

  By the way, in this kind of base wireless train control device, since the frequency of the ground radio network is different between adjacent stations, even if the synchronization signal (entry signal) wirelessly transmitted from the ground radio network is overreached, there is a problem. It does not occur.

  On the other hand, an on-board device for a train traveling on a route must be capable of wireless communication with the ground wireless network of all stations on the route. As a result, for example, on the upper side of the vehicle, the entry signal to the terrestrial wireless network of the next station (next station) that arrives next is preceded by the entry signal to the terrestrial wireless network of the next arrival station (next station). When an overreach call arrives, there is a problem that wireless communication is performed with the next station instead of the next station. In this way, when the on-board device wirelessly communicates with the next station instead of the next station, there is a problem that hinders the operation of the own train or the operation of other trains.

  Furthermore, there is a problem in that it is not possible to positively eliminate the signal arrival at the next station in a situation where both the signal at the next station to be received and the signal at the next station that should not be received can be received.

Japanese Patent Laid-Open No. 10-285101 JP 2010-288153 A

An object of the present invention is to provide a closed-law device Ru bovine prevent a communication error due to overreach incoming.

  In order to solve the above-described problem, the ground device according to the present invention is installed at each station and wirelessly transmits an entry signal to the terrestrial wireless network constructed at each station with a station number unique to the installed station.

  The ground device according to the present invention is combined with an on-vehicle device to constitute a closing device. That is, the closing device according to the present invention includes the above-described ground device and the on-board device, and the ground device wirelessly transmits the entry signal to the on-board device, and the on-board device has the station number information of each station. And when the station number attached | subjected to the received said entry signal and the station number information of a destination station correspond, it enters into the ground radio network of a destination station.

  As described above, according to the configuration of the ground device according to the present invention and the blocking device using the ground device, when the ground device is combined with the on-board device, the on-board device side adds the received entry signal. It is possible to determine whether or not the intrusion signal is an overreach incoming call based on the received station number. Therefore, it is possible to provide a ground device capable of avoiding erroneous communication due to overreach incoming, and a blocking device using the ground device.

  Specifically, the on-board device constituting the closing device according to the present invention has station number information of each station, and the station number attached to the received entry signal matches the station number information of the target station. Since entering the terrestrial wireless network of the destination station, erroneous communication due to overreach incoming calls can be avoided.

  Furthermore, regarding a preferable aspect of the closing apparatus according to the present invention, the ground apparatus wirelessly transmits the exit signal indicating the communication end information with the terrestrial wireless network constructed at each station with a station number unique to the installed station. . The on-board device has station number information of each station, and when the station number attached to the received exit signal matches the station number information of the departure station, the on-board device cuts off communication with the terrestrial wireless network of the departure station. .

  According to the above-described structure, the communication with the terrestrial wireless network of the departure station that does not need to continue communication is blocked based on the station number attached to the received exit signal, thereby receiving overreach from the departure station. Miscommunication can be avoided.

Above As mentioned, according to the present invention, it is possible to provide a avoiding the Hare Ru closed-law device communication error due to overreach incoming.

  Other objects, configurations and advantages of the present invention will be described in more detail with reference to the accompanying drawings. The accompanying drawings are merely examples.

It is a figure which shows typically the blocking apparatus which concerns on embodiment of this invention. It is a flowchart of the communication processing of the blocking apparatus which concerns on embodiment of this invention. It is a figure which shows typically the communication processing of the blocking apparatus which concerns on embodiment of this invention. It is a figure which shows typically the communication processing of the blocking apparatus which concerns on embodiment of this invention.

  1 to 4, the same reference numerals indicate the same or corresponding parts. The closing device shown in FIGS. 1 to 4 is a base wireless train control device known as one of special automatic closing devices (electronic code check type), and includes a ground device 1 and an on-vehicle device 2. Since these are components well known in the art, the basic configuration that this type of closure device should have will be briefly described.

  The ground device 1 has a ground radio device 10. The terrestrial radio apparatus 10 is installed at each station, and includes a synchronization signal (entry signal s1) for entering a terrestrial radio network constructed for each installed station, and radio communication with the terrestrial radio network. A unique number (station number) is assigned to each installed station to each of the exit signals s2 including information indicating that the operation is to be terminated, and wirelessly transmitted to the vehicle upper side.

  The on-vehicle device 2 includes an on-vehicle wireless device 20, a database unit 21, and a signal processing unit 22. The on-board wireless device 20 is installed in each train 3 traveling on the track, and wirelessly communicates with the ground wireless device 10 installed at each station, and enters and exits signals s1 and s2. Receive.

  The database unit 21 has all the station numbers unique to each station as station number information. On the other hand, the signal processing unit 22 has a station number information matching function. That is, the signal processing unit 22 compares the station number received by the on-board wireless device 20 and attached to the entry signal s1 supplied from the on-board wireless device 20 with the station number information stored in the database unit 21. When the station number attached to the entry signal s1 matches the station number of a desired station, for example, the station number of a station that is to be subjected to wireless communication such as the next arrival station (next station B), the next station B Information required for operation management of the train 3 such as the identification number (vehicle equipment ID) of the on-board device 2 mounted on each train 3 with the terrestrial wireless device 10. Send and receive.

  Similarly, the signal processing unit 22 collates the station number attached to the exit signal s2 supplied through the on-board wireless device 20 with the station number information stored in the database unit 21, and attaches it to the exit signal s2. When the station number and the station number of the desired station, such as the departure station (A), do not need communication with the terrestrial wireless network and the station number of the station that should be blocked, the communication is cut off. Then, a transition is made to the next entry signal reception waiting state (synchronization acquisition mode).

  The communication process of the closing apparatus in FIG. 1 will be further described with reference to FIGS. Note that the alternate long and short dash line shown in FIGS. 3 and 4 schematically shows the area where incoming signal s1 (and outgoing signal s2) can be received.

  First, in the communication process of the closing apparatus shown in FIGS. 1 to 4, as a prerequisite, a process of assigning a train number based on the vehicle-mounted device ID is performed. The assignment of the vehicle-mounted device ID and the train number is performed by a push button provided in the on-board device 2 of the train 3. By assigning the vehicle-mounted device ID and the train number, operation management of each train 3 such as route setting and block setting is performed. On the other hand, when canceling the assignment between the vehicle-mounted device ID and the train number, such as canceling the course (returning the course), it is performed by a push button provided separately from the assignment. As described above, except for the case of canceling the route once set, at the departure station A (see FIG. 3), the wireless communication between the ground device 1 and the on-board device 2 is usually completed when the closing setting is completed. Is no longer needed.

  Next, at the departure station A in FIG. 3, the on-board device 2 mounted on the train 3 receives a departure request signal from the ground radio device 10. Specifically, the on-board wireless device 20 has an operation unit (not shown), and starts communication with the terrestrial wireless device 10 based on a command from the operation unit. By the above-described operation, communication with the ground wireless network of departure station A is interrupted, departure from departure station A (see FIG. 4), and synchronous acquisition that invalidates incoming signals other than entry signal s1 of next station B Mode (see FIG. 2).

  More specifically, the ground radio apparatus 10 of the departure station A adds the station number of the station A to the exit signal s2, and wirelessly transmits it to the upper side of the vehicle. The on-board radio device 20 receives the departure signal s2 of the departure station A, and the signal processing unit 22 includes a station number of the departure station A attached to the departure signal s2 supplied through the on-board wireless device 20, and a database unit. The station number information stored in 21 is collated, and when they match, the communication with the terrestrial radio network of the departure station A is cut off and the next station B enters the synchronization acquisition mode of the entry signal s1. The on-board device 2 writes the exit signal s2 of the station A into the memory and does not start the wireless communication even if the entry signal s1 is received from a station other than the next station B, and the synchronization acquisition mode is continued.

  The condition for deleting the departure signal s2 of the departure station A from the memory is to enter the ground wireless network of the next station B (condition 1), press the push button of the on-board device 2 (condition 2), It is conceivable to turn off the power of the device 2 (condition 3). For example, when the route is restored, communication between the ground radio device 10 and the on-board device 2 is necessary even after the route is set. Condition 2 is satisfied, and the entry signal s1 of the departure station A becomes valid. As a result, it is possible to re-enter the terrestrial wireless network of the departure station A and perform wireless data transmission / reception. On the other hand, when the exit signal s2 does not exist in the memory, such as at the first departure, since the entry signal s1 from any station is valid, the crew member confirms the station number displayed on the on-board device 2 so that it is overloaded. It is possible to determine whether there is an incoming reach.

  Next, regarding the start of wireless communication with the next station B, as shown in FIG. 4, the on-board device 2 of the train 3 receives the entry signal s1 from the ground radio device 10 of the next station B, and the next station B Upon receipt of the entry signal s1 of B, the signal processing unit 22 compares the station number of the station B attached to the entry signal s1 with the station number information of the station B stored in the database unit 21, and the two match. Then, the terrestrial radio network of the next station B is entered, and transmission / reception of information necessary for operation management of the train 3 is started with the terrestrial radio network of the station B. Thereby, when there is an incoming signal s1 that has arrived from a place other than the next station B, for example, an incoming signal s1 to which the station number of the departure station A is attached or an incoming signal s1 to which the station number of the next station C is attached. In this case, it becomes possible not to enter the ground radio network of the station A or the station C.

  Whether the entry signal s1 is the next station B is determined by using the station number database unit 21 in the on-board device 2 and the station number stored in the entry signal s1 and the driving direction of the train 3 by a push button. It is done by collation. Usually, the push button is divided into two, one for each vertical line in the traveling direction F of the train 3.

  By the way, as already described, this type of terrestrial wireless network is independent of each other between adjacent stations, specifically between stations AB and between stations BC by changing the frequency between adjacent stations. doing. On the other hand, the on-board device 2 of the train 3 traveling on the route must enter the ground wireless network of all stations A to C existing on the route and perform wireless communication. As a result, when the entry signal s1 to the terrestrial radio network of the next station C adjacent to the next station B arrives overreach before the entry signal s1 to the terrestrial radio network of the desired station (for example, the next station B). Conventionally, wireless communication is performed not with the next station B but with the station C one after another, causing a problem that hinders the operation of the own train 3 and the operation of the other trains 3.

  Furthermore, since it is possible to receive both the entry signal s1 of the next station B and the entry signal s1 of the station C one after another, an overreach incoming call has occurred, and the on-board wireless device 20 is connected to a plurality of stations. When entering the state of receiving the entry signal s1, wireless communication is performed with the station C that previously received the entry signal s1. As a result, there arises a problem that, for example, overreach incoming of the entry signal s1 of the station C one after another cannot be positively or actively excluded.

  On the other hand, the closing device of FIGS. 1 to 4 includes a ground device 1, and the ground device 1 is installed at each station, and an entry signal s1 to the terrestrial wireless network constructed at each station A to C A radio station with a unique station number is transmitted. According to this configuration, the on-board device 2 side can determine whether or not the entry signal s1 is an overreach incoming call based on the station number assigned to the received entry signal s1. And the on-board apparatus 2 which comprises a blocking apparatus has station number information of each station (A-C), and the station number attached | subjected to the received entry signal s1 and the station number information of the destination station corresponded. When entering the terrestrial wireless network of the destination station, erroneous communication due to overreach incoming calls can be avoided.

  Further, the ground device 1 wirelessly transmits an exit signal s2 indicating communication end information with the terrestrial wireless network constructed at each station (A to C) with a station number unique to the installed station. The onboard device 2 has station number information of each station. When the station number attached to the received exit signal s2 matches the station number information of the departure station, the onboard device 2 communicates with the terrestrial wireless network of the departure station. Cut off.

  According to the above-described structure, communication with a terrestrial wireless network of a station that does not need to continue communication (for example, departure station A) is actively or actively blocked based on the station number added to the received exit signal s2. By doing so, it is possible to avoid erroneous communication due to overreach incoming from the departure station A (see FIG. 4).

  The advantages of the closing device described with reference to FIGS. 1 to 4 are particularly noticeable in rural traffic lines.

  Although the contents of the present invention have been specifically described above with reference to the preferred embodiments, it is obvious that those skilled in the art can take various modifications based on the basic technical idea and teachings of the present invention. It is.

1 Ground device 2 On-vehicle device S1 Entry signal S2 Exit signal

Claims (4)

An on-vehicle device and a ground device that transmits an entry signal or an exit signal to a terrestrial wireless network constructed at each station to the on-vehicle device,
When the on-board device receives the exit signal, the on-board device cuts off the terrestrial wireless network communication with the ground device from which the exit signal is transmitted, and enables the arrival of the entry signal to which a desired station number is assigned in advance. apparatus. The closing apparatus according to claim 1, wherein the on- board device is configured such that when the station number attached to the exit signal of the departure station matches the station number information of the departure station, the departure station A blocking device that cuts off communication with the terrestrial wireless network and shifts to the next station entry waiting state for entry signals. The closing device according to claim 1 or 2 ,
The ground apparatus, wirelessly transmits a pre-Symbol entry signal on the vehicle device,
The on-board device has station number information of each station, and when the station number attached to the received entry signal matches the station number information of the destination station, the terrestrial radio network of the destination station A closing device to enter. A closing device according to any one of claims 1 to 3 ,
The ground device, the front Symbol entry signal, and wirelessly transmits the exit signal on the vehicle device,
The on-board device has station number information of each station, and when the station number attached to the received entry signal matches the station number information of the destination station, the terrestrial radio network of the destination station A closing device that shuts off communication with the terrestrial wireless network of the departure station when the station number attached to the exit signal matches the station number information of the departure station.