JP6268075B2 - Railroad crossing breakage detection device - Google Patents

Description

  The present invention relates to a level crossing breakage breakage detection device that detects breakage of a breakage bar included in a level crossing breaker.

  Railroad crossing barriers installed at railroad crossings (roads) where a railroad and a road cross each other are usually provided with a barrier for blocking road traffic when the train passes. The barrier fence is designed to block and open the road by turning around the support point of the railroad crossing barrier (block release), but when the barrier rod starts to descend, It may break.

  Conventionally, the occurrence of breakage of such barriers has been generally recognized by notifications from train drivers, passersby, and the like. However, it is desirable to recognize the breakage of the barrier as soon as possible.

  In Japanese Patent Application Laid-Open No. 2007-320454, a transmitting means for transmitting a pulse-like vibration wave signal to the inside of the barrier rod and provided at the tip of the barrier rod is provided at the base end portion of the barrier rod. A crossing breakage breakage breakage detecting device comprising a reflection means for reflecting the vibration wave signal and a reception means for receiving the vibration wave signal, and detecting breakage of the breakage bar based on a reception result of the reception means. The vibration wave signal immediately before the end of the measurement time period that is predetermined according to the time from when the transmitted vibration wave signal is reflected by the reflection means and received by the reception means is A crossing breakage breakage breakage characterized by having a detecting means for measuring a breakage of the breakage bar by measuring a continuous no-reception time in which the state of no reception continues continuously and the continuous no-reception time exceeds a set time Detection Location is disclosed.

JP 2007-320454 A

  An object of the present invention is to provide a level crossing breakage breakage detection device capable of automatically detecting breakage of a breakage bar included in a level crossing breaker.

  A crossing breakage breakage detecting device according to the present invention is a crossing breakage breakage detecting device for detecting breakage of a breakage provided in a crossing breaker, and a child machine mounted on a front end side of the breaker and the child Based on a notification from the machine, and a master unit that determines whether or not the breakage of the barrier rod has occurred. When the slave unit detects a change in the tilt state of the barrier rod, the slave unit notifies the parent machine of the tilt state. And the master unit determines whether or not a tilt state notification associated with the change is received from the slave unit when the lifting / lowering state of the level crossing barrier is changed, and the tilt state is determined from the slave unit. When the notification is not received, it is determined that a breakage has occurred in the shut-off cage to which the slave unit is attached.

  In this case, the master unit may determine whether or not the breaker bar breaks when the railroad crossing breaker shifts from the lowered state to the raised state.

  Further, in the above case, the slave unit further periodically transmits a periodic notification to the master unit, and the master unit further receives the regular notification from the slave unit regularly. If the periodic notification is not regularly received from the slave unit, it may be determined that an abnormality has occurred in the slave unit.

  In the above case, a plurality of slave units may be provided.

  A slave unit according to the present invention is a slave unit for a level crossing breaker breakage detecting device mounted on the front end side of a breaker fence to be detected for breakage, and an inclination for detecting a change in the tilt state of the breaker fence A state detection unit and a transmission processing unit that transmits a tilt state notification to a parent machine when a change in the tilt state is detected by the tilt state detection unit.

  In this case, the transmission processing unit may transmit an inclination state notification to the parent device at least one of when the state of inclination of the barrier rod is changed to the vertical state and when changed to the horizontal state. Good.

  In the above case, the transmission processing unit may further periodically transmit a periodic notification to the parent device.

  The parent device according to the present invention is a parent device for a railroad crossing breakage breakage detection device, and receives a tilt time notification from a slave device, and a reception time management unit that manages the time when the tilt status notification is received from the slave device. In response, the reception processing unit that stores the time at which the notification of the inclination state is received in the reception time management unit, and the interrupting device to which the slave unit is attached based on the reception time that is stored in the reception time management unit. And a breakage determination unit for determining whether or not breakage has occurred.

  In this case, the breakage determination unit stores, in the reception time management unit, whether or not an inclination state notification accompanying the change is received from the slave unit when the lifting state of the crossing barrier is changed. When the determination is made based on the reception time and the notification of the tilt state is not received from the slave unit, it may be determined that a breakage has occurred in the blocking rod on which the slave unit is mounted. Furthermore, when the breakage determination unit detects that the lifting / lowering state of the level crossing breaker has changed based on a signal indicating the lifting / lowering state of the level crossing breaker, the breakage determination unit falls within a predetermined time range based on the time corresponding to the change. In addition, it is determined whether or not the tilt state notification is received from the slave unit, and if the tilt state notification is not received from the slave unit within the predetermined time range, It may be determined that a breakage has occurred.

  In the above case, the breakage determination unit may determine whether or not a breakage has occurred in the barrier when the crossing barrier is shifted from the lowered state to the raised state.

  In the above case, the reception time management unit further manages the time when the regular notification is received from the slave unit, and the reception processing unit receives the regular notification when the regular notification is received from the slave unit. A slave unit failure determination is performed to store the received time in the reception time management unit and determine whether or not an abnormality has occurred in the slave unit based on the reception time of the periodic notification stored in the reception time management unit You may make it further provide a part.

  In this case, the slave unit failure determination unit determines whether or not the periodic notification is periodically received from the slave unit based on the reception time of the periodic notification stored in the reception time management unit, If the periodic notification is not received regularly from the machine, it may be determined that an abnormality has occurred in the child machine.

  According to the present invention, it is possible to provide a railroad crossing breakage breakage detection device capable of automatically detecting breakage of a breakage bar.

It is a figure for demonstrating the structure of the railroad crossing breakage breakage detection apparatus 100 by this invention. It is FIG. (1) for demonstrating the outline | summary of the interruption breakage breakage detection method in the level crossing breakage breakage detection apparatus. It is FIG. (2) for demonstrating the outline | summary of the interruption breakage breakage detection method in the level crossing breakage breakage detection apparatus. It is a figure for demonstrating the hardware constitutions of the subunit | mobile_unit 110. FIG. It is a figure for demonstrating the function structure (software structure) of the subunit | mobile_unit 110. FIG. It is a figure for demonstrating the structure of the transmission data transmitted to the main | base station 120 from the subunit | mobile_unit 110. FIG. It is a flowchart for demonstrating the flow of a process in the subunit | mobile_unit 110. It is a figure for demonstrating the hardware constitutions of the main | base station 120. FIG. FIG. 3 is a diagram for describing a functional configuration (software configuration) of base unit 120. It is a figure for demonstrating the structure of the reception time management table 930. FIG. 5 is a flowchart (No. 1) for explaining the flow of processing in base unit 120; 12 is a flowchart (No. 2) for describing the flow of processing in base unit 120;

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  A railroad crossing breakage breakage detecting device according to the present invention is composed of a child machine and a parent machine, and the presence or absence of breakage of the breakage bar depending on the presence or absence of notification from the child machine provided to the breaker provided in the crossing breaker Is detected.

  In addition, the embodiment described below is configured to detect breakage of a plurality of barrier rods. There are usually two or four level crossing barriers for each level crossing because one or two level crossing barriers are installed on both sides of the line across the line. Become. The embodiment described below is configured to be able to detect breakage of a barrier bar provided in a total of four level crossing alarms arranged on both sides of a track.

  FIG. 1 is a diagram for explaining a configuration of a crossing breakage breakage detecting device according to the present invention.

  As shown in the figure, a crossing breakage breakage detecting device 100 according to the present invention is composed of a plurality of (four in this embodiment) slave units 110 (110a to 110d) and a single master unit 120. ing.

  The slave unit 110 is used by being attached to a breaker to be detected for breakage. The slave unit 110 monitors the inclination state of the breaker and when the inclined state changes, Notification (inclination state notification) is performed. In the present embodiment, the slave unit 110 is attached to the front end portion of the blocking rod, so that the blocking rod changes from a horizontal state (a state where the blocking rod is completely lowered) to a vertical state (a state where the blocking rod is completely raised). When the transition is made, and when the transition is made from the vertical state to the horizontal state, a tilt state notification is sent to the parent device 120. In the present embodiment, the tilt state notification is performed when the slave unit 110 transmits predetermined data to the master unit 120 by wireless communication.

  The master unit 120 is used, for example, installed in a railroad crossing equipment box provided near each railroad crossing, and is a breakage detection target based on a tilt state notification from the slave unit 110. Judgment is made on whether or not a flaw is broken. In the present embodiment, the master unit 120 monitors the lifting / lowering state of the level crossing breaker based on the breaker lifting / lowering state signal output from the level crossing breaker, and the lifting / lowering state of the level crossing breaker is in the lowered state (blocking state). When the state shifts to the lifted state (opened state), the presence or absence of breakage of each barrier rod is determined depending on whether or not each slave unit 110 has a tilt state notification accompanying the shift.

  2 and 3 are diagrams for explaining an outline of a breaking breakage detection method in the crossing breaking breakage detection device 100. FIG. FIG. 2 shows a state in which the breaking of the breaking bar has not occurred, and FIG. 3 shows a state in which the breaking of the breaking bar has occurred. FIGS. 2 (a) and 3 (a) show the state when the railroad crossing breaker (barrier) is completely lowered, and FIGS. 2 (b) and 3 (b) show the railroad crossing, respectively. The state when the breaker is released when the breaker (breaker) is completely raised is shown.

  As shown in FIG. 2, in a state where the breaker bar 210 is not broken, when the crossing barrier 200 is completely lowered, the barrier bar 210 is directed horizontally, and the crossing barrier 200 is completely closed. When rising, the blocking rod 210 is directed vertically. That is, every time the railroad crossing breaker 200 repeats the ascending operation and the descending operation, the transition state of the barrier bar 210 from the horizontal state to the vertical state and the transition from the vertical state to the horizontal state are repeated. As a result, the inclination state of the slave unit 110 attached to the barrier bar 210 also changes as the level crossing barrier 200 moves up and down.

  On the other hand, as shown in FIG. 3, in a state where the breaker bar 210 is broken, the distal end side portion 211 of the breaker bar attached with the slave unit 110 is separated from the base end side portion 212, and the level crossing is blocked. Even if the machine 200 is moved up and down, the tilt state does not change. As a result, the tilting state of the slave unit 110 attached to the barrier bar 210 does not change even if the ascending or descending operation of the crossing barrier 200 is performed.

  The railroad crossing breakage breakage detecting device 100 utilizes the fact that when the breakage of the crossing breaker 210 occurs, even if the crossing breaker 220 performs an ascending operation or a descending operation, the tilt state of the slave unit 110 does not change. Thus, the occurrence of breakage of the blocking rod 210 is detected. More specifically, first, when the slave unit 110 detects a change in the tilt state associated with the rising and lowering of the barrier rod 210, the slave unit 110 sends a tilt state notification to the master unit 120. On the other hand, when the main unit 120 monitors the elevation state of the level crossing barrier 220 and detects that the elevation state of the level crossing barrier 220 has changed, whether or not the tilt state notification associated with the change has been received from the slave unit 110 is determined. If the notification of the tilt state is not received, it is determined that breakage has occurred in the blocking rod 210.

  Next, the detail of the subunit | mobile_unit 110 and the main | base station 120 which comprise the railroad crossing interruption breakage detection apparatus 100 is demonstrated.

  First, details of the slave unit 110 will be described.

  FIG. 4 is a diagram for explaining the hardware configuration of the slave unit 110.

  As shown in the figure, the slave unit 110 includes a CPU (microcontroller) 111, a tilt state detection unit 112, a wireless communication unit 113, and a solar cell unit 114.

  The CPU 111 is for controlling the operation of the slave unit 110 and includes a memory (ROM 115 and RAM 116) and a timer 117 inside. The CPU 111 implements various functions of the slave unit 110 by executing a program recorded in advance in the internal ROM 115. In addition, the CPU 111 uses the timer 117 to perform time management for periodic notification (described later).

  The inclination state detection part 112 is for detecting the inclination state of the barrier with the handset 110 attached thereto. In the present embodiment, the tilt state detection unit 112 is configured by a ball-type tilt switch. For example, when the barrier rod with the slave unit 110 attached is in a horizontal state, a signal representing a digital value “0” is output. In the case of the output and when the breaking bar with the slave unit 110 attached is in a vertical state, a signal representing a digital value “1” is output. The output signal of the tilt state detection unit 112 is connected to a digital input terminal (digital input port) of the CPU 111. The CPU 111 reads the output signal of the tilt state detection unit 112 and the state of the output signal of the tilt state detection unit 112 It is configured to be able to confirm. By checking the state of the output signal of the tilt state detection unit 112, the CPU 111 can check the tilt state of the barrier rod detected by the tilt state detection unit 112.

  The wireless communication unit 113 is for performing wireless communication with the parent device 120. In the present embodiment, the wireless communication unit 113 is configured by a wireless communication module for ZigBee (registered trademark), and is appropriately electrically connected to the CPU 111.

  The solar cell unit 114 is for supplying electric power necessary for the operation of the slave unit 110. In the present embodiment, since the solar cell is used, it is possible to operate the slave unit 110 without requiring external power supply. That is, no wiring for power supply is required, and the handset 110 can be easily attached to the shut-off cage. Furthermore, compared with the case of using a dry battery or the like, it is not necessary to replace the battery when the battery runs out, so that maintenance work can be reduced. In this embodiment, when the subunit | mobile_unit 110 is mounted | worn with the interruption | blocking gutter, it is comprised so that the light-receiving surface of the solar cell part 114 may be exposed in the front end side end surface of a interruption | blocking gutter.

  FIG. 5 is a diagram for explaining a functional configuration (software configuration) of the slave unit 110.

  As shown in the figure, handset 110 includes a tilt state acquisition unit 510, a time management unit 520, a notification necessity determination unit 530, and a transmission processing unit 540. Each of the units 510 to 540 is basically realized by the CPU 111 executing a program recorded in advance in the internal ROM 115.

  The inclination state acquisition unit 510 is for acquiring the inclination state of the barrier rod. In the present embodiment, the tilt state acquisition unit 510 reads the output signal from the tilt state detection unit 112 to acquire the tilt state of the barrier rod. That is, by reading the value of the digital input port of the CPU 111 to which the output signal of the tilt state detection unit 112 is connected, the tilt state of the barrier rod is acquired. The inclination state acquisition unit 510 repeats acquisition of the inclination state of the barrier rod at an appropriate frequency.

  The time management unit 520 performs time management for performing periodic notification to the parent device 120. More specifically, the time management unit 520 sets a regular notification flag (sets the value of the regular notification flag to “1”) every time a predetermined time has elapsed. The periodic notification flag indicates whether or not periodic notification is necessary. When the flag is “1”, the periodic notification is necessary. When the flag is “0”, the periodic notification is not necessary. As will be described later, when a periodic notification is made, the periodic notification flag is cleared (the value of the periodic notification flag is set to “0”). The value of the regular notification flag is stored in a predetermined area secured on the RAM 116 inside the CPU 111, for example. In the present embodiment, the time management unit 320 is realized by the CPU 111 using the internal timer 117.

  The notification necessity determination unit 530 determines whether or not to notify the parent device 120 based on the inclination state of the barrier rod acquired by the inclination state acquisition unit 510, the periodic notification flag, and the like. Specifically, first, it is determined whether or not to notify the parent device 120 depending on whether or not the inclination state of the barrier rod has changed. That is, it is determined that notification (inclination state notification) to base unit 120 is performed when the state of inclination of the barrier rod changes from the horizontal state to the vertical state and when the state changes from the vertical state to the horizontal state. Whether or not the inclination state of the barrier rod has changed is determined by comparing the inclination state of the barrier rod acquired by the inclination state acquisition unit 510 with the inclination state flag to determine whether or not they are different. . The inclination state flag indicates the inclination state of the barrier rod previously acquired by the inclination state acquisition unit 510, and the value of the inclination state flag is, for example, in a predetermined area secured on the RAM 116 inside the CPU 111. Remembered. The value of the slope state flag is appropriately updated to the value of the slope state (the slope state after the change) of the barrier rod acquired this time when there is a change in the slope state of the barrier rod.

  Further, the notification necessity determination unit 530 also determines whether or not to notify the parent device 120 depending on whether or not the regular notification flag is set. That is, when the regular notification flag is set, it is determined that notification (periodic notification) to the parent device 120 is necessary. Details of the processing in the notification necessity determination unit 530 will be described later.

  The transmission processing unit 540 is for transmitting transmission data for performing a predetermined notification to the parent device 120 to the parent device 120. More specifically, the transmission processing unit 540 controls the wireless communication unit 113 to transmit the tilt state notification transmission data and the regular notification transmission data to the parent device 120.

  FIG. 6 is a diagram for explaining a configuration of transmission data transmitted from the slave unit 110 to the master unit 120.

  As shown in the figure, the transmission data 600 transmitted from the slave unit 110 to the master unit 120 includes a slave unit ID 610, a regular notification flag 620, and a tilt state flag 630.

  The slave unit ID 610 is information for identifying each slave unit 110. By including the child device ID 610 in the transmission data 600, the parent device 120 that has received the transmission data 600 can determine from which child device 110 the transmission data 600 is transmitted. It becomes. In the present embodiment, a 64-bit IEEE address uniquely assigned to each ZigBee wireless communication module included in each slave unit 110 is used as the slave unit ID.

  The regular notification flag 620 indicates whether or not the transmission data 600 is for regular notification. By including the periodic notification flag 620 in the transmission data 600, the master unit 120 that has received the transmission data 600 can determine whether or not the transmission data 600 is transmission data for periodic notification. Become. That is, if the value of the regular notification flag 620 is “1”, the transmission data 600 including the regular notification flag 620 is transmission data for regular notification, and if the value of the regular notification flag 620 is “0”. The transmission data 600 including the regular notification flag 620 is not regular transmission data (inclination state notification transmission data).

  The tilt state flag 630 indicates the type of tilt state notification. When the transmission data 600 includes the inclination state flag 630 (and the regular notification flag 620), the base unit 120 that has received the transmission data 600 can change the transmission data 600 from the horizontal state to the vertical state. It is possible to discriminate whether the inclination state notification (vertical transition notification) associated with the transition to the state or the inclination state notification (horizontal transition notification) associated with the transition state of the barrier rod from the vertical state to the horizontal state. . That is, if the value of the tilt state flag 630 is “1” (and the value of the regular notification flag 620 is “0”), the transmission data 600 including the tilt state flag 630 (and the regular notification flag 620) is vertical. If it is a transition notification and the value of the tilt state flag 630 is “0” (and the value of the regular notification flag 620 is “0”), the transmission data 600 including the tilt state flag 630 (and the regular notification flag 620). Is a horizontal transition notification.

  FIG. 7 is a flowchart for explaining the flow of processing in slave unit 110.

  As shown in the figure, first, the time management unit 520 determines whether or not a fixed time that defines the interval (cycle) of regular notifications has elapsed (S701). As a result of the determination, if the predetermined time has elapsed (S701: Yes), the periodical notification flag is set by the time management unit 520 (S702). Then, the time management unit 520 starts counting the predetermined time again. On the other hand, if the predetermined time has not elapsed (S701: No), the process proceeds to the next process.

  Next, the notification necessity determination unit 530 determines whether or not the inclination state of the barrier rod has changed (S703). That is, whether or not there is a change in the inclination state of the barrier rod by comparing the current inclination state acquired via the inclination state acquisition unit 510 with the inclination state flag indicating the previously acquired inclination state. Determined. Note that the value of the tilt state flag is initialized to an appropriate value (for example, “0”) when the slave unit 110 starts operating.

  As a result of the determination, if there is a change in the inclination state of the barrier rod (S703: Yes), it is determined that the inclination state notification to the main unit 120 is necessary. First, the value of the inclination flag is acquired this time. (S704). Then, transmission data for inclining state notification is transmitted to the parent device 120 by the transmission processing unit 540 (S705). Thereafter, the process returns to S701 described above, and the processes after S701 are repeated.

  On the other hand, when there is no change in the slope state of the barrier rod (S703: No), the notification necessity determination unit 530 determines whether or not the regular notification flag is set (S706). As a result of the determination, if the regular notification flag is set (S706: Yes), that is, if the value of the regular notification flag is “1”, it is determined that the regular notification is necessary, and the transmission processing unit 540 Transmission data for regular notification is transmitted to the parent device 120 (S707). Then, the regular notification flag is cleared (S708), and then the process returns to S701 described above, and the processes after S701 are repeated.

  On the other hand, when the periodic notification flag is not set (S706: No), that is, when the value of the periodic notification flag is “0”, it is determined that the periodic notification is unnecessary, and the processing of S701 described above is performed again. Returning to step S701, the processes in and after S701 are repeated.

  By performing the processing as described above, the slave unit 110 can send a tilt state notification and a regular notification to the master unit 120.

  Next, details of base unit 120 will be described.

  FIG. 8 is a diagram for explaining a hardware configuration of base unit 120.

  As shown in the figure, base unit 120 includes a CPU (microcontroller) 121, an external condition input unit 122, a wireless communication unit 123, and a detection result output unit 124.

  The CPU 121 is for controlling the operation of the parent device 120 and includes a memory (ROM 125 and RAM 126) and a timer 127 inside. The CPU 121 implements various functions of the parent device 120 by executing a program recorded in advance in the internal ROM 125. In addition, the CPU 121 uses the timer 127 to manage the time when the notification from the slave unit 110 is received.

  The external condition input unit 122 is for taking in an external signal for controlling the breaking / breaking breakage detection operation of the master unit 120, and is configured by a photocoupler or the like. In this embodiment, the breaker lifting / lowering state signal can be input as an external signal for controlling the breakage breakage detection operation.

  The breaker lifting / lowering state signal is a signal indicating the lifting / lowering state of the railroad crossing breaker (breaking fence) (for example, rising or falling). Based on the status signal, the process of determining whether or not a breakage breakage has occurred is started. In this embodiment, a signal (breaker lowering signal) indicating that the level crossing barrier is completely lowered is input as the breaker lifting state signal. In general, the control system of a level crossing breaker outputs a signal indicating that the level crossing breaker has been completely lowered (breaker down signal). As a control for level crossing blocking reaction lights (crossing action reaction lights) to inform train operators that the descent has been completed for all level crossing breakers and as a noise countermeasure for residents along the line, a warning is issued after all level crossing breakers have been lowered It is used to control a level crossing alarm to automatically reduce the volume of sound. In this embodiment, the breakage breakage detection operation is controlled using a breaker descent signal output from the control system of the crossing breaker.

  The wireless communication unit 123 is for performing wireless communication with the slave unit 110. In the present embodiment, the wireless communication unit 123 is configured by a wireless communication module for ZigBee and is electrically connected to the CPU 121 as appropriate.

  The detection result output unit 124 outputs a signal for notifying an external monitoring device or the like that a breakage of the blocking rod has occurred, and is configured by a relay or the like. Specifically, the detection result output unit 124 outputs a breakage detection signal indicating that the breakage of the barrier rod has been detected. Further, as will be described later, the master unit 120 in this embodiment also detects a fault of each slave unit 110, and the detection result output unit 124 also has a slave unit fault detection signal indicating that a slave unit fault has been detected. Output.

  FIG. 9 is a diagram for explaining a functional configuration (software configuration) of base unit 120.

  As shown in the figure, base unit 120 includes a reception processing unit 910, a time management unit 920, a reception time management table 930, a breakage determination unit 940, and a slave unit failure determination unit 950. Each unit 910, 920, 940, and 950 is basically realized by the CPU 121 executing a program recorded in advance in the internal ROM 125. The reception time management table 930 is provided in a predetermined area secured on the RAM 126 in the CPU 121.

  The reception processing unit 910 is for receiving transmission data transmitted by the slave unit 110. Specifically, the reception processing unit 910 controls the wireless communication unit 123 to receive transmission data transmitted by the slave unit 110. Further, when receiving predetermined transmission data from the slave unit 110, the reception processing unit 910 acquires the time when the transmission data is received from the time management unit 920 and stores it in the reception time management table 930. Details of the processing in the reception processing unit 910 will be described later.

  The time management unit 920 appropriately manages the time and provides the current time to the reception processing unit 910 and the like. In the present embodiment, the time management unit 920 is realized by the CPU 121 using the internal timer 127, and uses the elapsed time from the time when the time management unit 920 is activated as the time.

  The reception time management table 930 manages the time at which predetermined transmission data from the slave unit 110 is received (reception time management unit). In the present embodiment, the reception time management table 930 manages reception times of three types of transmission data sent from each slave unit 110. Details of the reception time management table 930 will be described later.

  The breakage determination unit 940 determines whether breakage of the breaker has occurred based on the breaker lifting state signal input via the external condition input unit 122 and the information stored in the reception time management table 930. Is to discriminate. That is, when the breakage determination unit 940 detects that the level crossing barrier is completely lifted based on the breaker lifting / lowering state signal (breaker lowering signal), the breakage determination unit 940 checks the information stored in the reception time management table 930. Then, it is confirmed whether or not an inclination state notification accompanying the ascent (transition from the horizontal state to the vertical state) is received from each slave unit 110. Then, when there is a slave unit 110 that has not received the notification of the tilt state, it is determined that a breakage has occurred in the blocking cage on which the slave unit 110 is attached. And the detection result output part 124 is controlled, and the breakage detection signal which shows having detected the breakage generation | occurrence | production of the breaking rod is output outside. Details of the processing in the breakage determination unit 930 will be described later.

  The slave unit defect determination unit 950 determines whether or not each slave unit 110 is operating normally based on information stored in the reception time management table 930. That is, the slave unit defect determination unit 950 periodically checks the information stored in the reception time management table 930, and periodically receives transmission data for regular notification from each slave unit 110. The slave unit 110 that does not regularly receive the transmission data for periodic notification is determined to have some abnormality. And the detection result output part 124 is controlled, and the subunit | mobile_unit defect detection signal which shows having detected the malfunction of the subunit | mobile_unit 110 is output outside. Details of processing in the slave unit defect determination unit 950 will be described later.

  FIG. 10 is a diagram for explaining the configuration of the reception time management table 930.

  As shown in the figure, the reception time management table 930 includes a “child device number” field 931, a “child device ID” field 932, a “periodic notification reception time” field 933, and a “vertical shift notification reception time” field. 934 and a “horizontal shift notification reception time” field 935.

  The “child device number” field 931 stores information (number) for distinguishing the child device 110 managed by the parent device 120 in the parent device 120. In this embodiment, in order to manage four slave units 110, numbers "1" to "4" are stored as shown in FIG.

  The “slave unit ID” field 932 stores information for identifying a notification (send source of notification) from each slave unit 110. In this embodiment, the 64-bit IEEE address uniquely assigned to each ZigBee wireless communication module included in each slave unit 110 is “slave unit ID” as information for identifying the notification from each slave unit 110. Stored in field 932. When starting to use the railroad crossing breakage breakage detection device 100, in order to form a network (in this embodiment, ZigBee PAN) for communication between the slave unit 110 and the master unit 120, It is necessary to register the slave unit 110 participating in the network in the master unit 120. At this time, the IEEE address notified from each slave unit 110 is stored in the corresponding location of the “slave unit ID” field 932. become.

  The “periodic notification reception time” field 933 stores the (most recent) time at which the periodic notification is received from each slave unit 110. The “periodic notification reception time” field 933 is updated each time reception data for regular notification is received from each slave unit 110.

  The “vertical shift notification reception time” field 934 stores the (most recent) time at which a tilt state notification (vertical shift notification) for notifying that each of the slave units 110 has shifted to the vertical state has been received. . The “vertical shift notification reception time” field 934 is updated each time a vertical shift notification is received from each slave unit 110.

  The “horizontal transition notification reception time” field 935 stores the (most recent) time at which an inclination state notification (horizontal transition notification) for notifying that the barrier rod has shifted to the horizontal state is received from each slave unit 110. . The “horizontal shift notification reception time” field 935 is updated each time a horizontal shift notification is received from each slave unit 110.

  11 and 12 are flowcharts for explaining the flow of processing in base unit 120. FIG. 11 shows a flow of processing executed when predetermined transmission data is received from the slave unit 110, and FIG. 12 shows a flow of processing for detecting the slave unit failure and breakage.

  First, the process shown in FIG. 11 will be described.

  When the predetermined transmission data from the slave unit 110 is received, the current time is first acquired from the time management unit 920 by the reception processing unit 910 as shown in the figure (S1101).

  Next, it is determined whether or not the transmission data received from the slave unit 110 is for periodic notification (S1102). That is, it is determined whether or not the value of the regular notification flag included in the transmission data is “1”.

  As a result of determination, when the transmission data received from the slave unit 110 is for periodic notification (S1102: Yes), that is, when the value of the periodic notification flag included in the transmission data is “1” The time acquired from the time management unit 920 is stored in the corresponding part of the “periodic notification reception time” field 933 of the reception time management table 930 (S1103). That is, based on the child device ID included in the transmission data, it is stored in a location corresponding to the child device ID in the “periodic notification reception time” field 933.

  On the other hand, when the transmission data received from the slave unit 110 is not for periodic notification (S1102: No), that is, when the value of the periodic notification flag included in the transmission data is “0”, Subsequently, it is determined whether or not the transmission data is for vertical transition notification (S1104). That is, it is determined whether or not the value of the tilt state flag included in the transmission data is “1”.

  As a result of the determination, if the transmission data received from the slave unit 110 is for vertical shift notification (S1104: Yes), that is, the value of the tilt state flag included in the transmission data is “1”. In this case, the time acquired from the time management unit 920 is stored in the corresponding place in the “vertical shift notification reception time” field 934 of the reception time management table 930 (S1105). That is, based on the child device ID included in the transmission data, it is stored in a location corresponding to the child device ID in the “vertical shift notification reception time” field 934.

  On the other hand, when the transmission data received from the slave unit 110 is not for the vertical shift notification (S1104: No), that is, when the value of the tilt state flag included in the transmission data is “0”. The time acquired from the time management unit 920 is stored in the corresponding place in the “horizontal shift notification reception time” field 935 of the reception time management table 930 (S1106). That is, based on the slave unit ID included in the transmission data, it is stored in the location corresponding to the slave unit ID in the “horizontal shift notification reception time” field 935.

  When the predetermined transmission data is received from the slave unit 110, the above processing is repeated, whereby the reception time management table 930 stores the (most recent) reception time of the predetermined transmission data. Become.

  Next, the process shown in FIG. 12 will be described. The processing shown in the figure is continuously executed after the master unit 120 starts operation.

  As shown in the figure, first, the slave unit defect determination unit 550 determines whether or not a regular notification from each slave unit 110 is received (S1201). That is, the periodical notification reception time from each slave unit 110 stored in the reception time management table 930 is compared with the current time acquired from the time management unit 920, and within a predetermined time range (the predetermined time of the current time). It is determined whether or not a periodic notification is received from each slave unit 110 between before the time and the current time. For example, the difference between the current time and each periodic notification reception time stored in the reception time management table 930 is calculated, and if the difference is less than a predetermined threshold, it is determined that the periodic notification is received. If the difference is greater than or equal to a predetermined threshold, it is determined that the periodic notification has not been received.

  As a result of the determination, if there is a slave unit 110 that has not received the periodic notification (S1201: No), it is determined that some abnormality has occurred for the slave unit 110, and the detection result output unit 124 is controlled. Then, a slave unit failure detection signal for notifying the outside of the slave unit 110 is output to the outside (S1202).

  On the other hand, if regular notifications have been received from all the slave units 110 (S1201: Yes), it is determined that each slave unit 110 is operating normally, and the process proceeds to the next process.

  Next, it is discriminate | determined by the breakage discrimination | determination part 940 whether the raising / lowering state of the level crossing barrier was changed (S1203). That is, the value of the circuit breaker up / down state signal (the circuit breaker down signal) is read, and the current value of the circuit breaker up / down state signal is compared with the circuit breaker up / down state flag indicating the value of the previously read circuit breaker up / down state signal. To determine whether there is a difference between the two. The value of the breaker up / down state flag is stored, for example, in a predetermined area provided on the RAM 126 in the CPU 121. Note that the value of the breaker ascending / descending state flag is initialized to an appropriate value (for example, “0”) when the operation of the parent device 120 is started.

  Furthermore, in the present embodiment, when the level crossing barrier is moved from the lowered state to the raised state, breakage detection processing of the barrier bar is performed. That is, in the process of S1203, the breakage determination unit 540 determines whether or not the level crossing breaker has started to shift from the lowered state to the raised state based on the value of the breaker lowering signal, and the level crossing breaker is in the raised state. When it is detected that the transition to the above has started, the breakage detection processing for the barrier bar is started after waiting for the level crossing barrier to rise completely (in the process of S1204 described later). As described above, in the present embodiment, since the breaker lowering signal (the signal indicating that the level crossing breaker is completely lowered) is used as the breaker raising / lowering state signal, When the value shifts from “1” (value indicating that the level crossing barrier is completely lowered) to “0” (value indicating that the level crossing barrier is not fully lowered), It is determined that has started to shift from the lowered state to the raised state.

  In principle, the present invention can also be configured to perform breakage detection processing of the barrier when the railroad crossing breaker shifts from the raised state to the lowered state. However, in this case, for example, when the fall of the barrier rod is temporarily obstructed by a car or a person and the transition to the horizontal state of the barrier rod is delayed, the inclination state notification from the slave unit 110 is a predetermined time. There is a possibility that the main unit 120 does not reach within the range, and as a result, the main unit 120 may erroneously detect that the breakage of the blocking bar has occurred. On the other hand, if the crossing breaker is moved from the lowered state to the raised state as in this embodiment, the possibility of such a false detection can be easily eliminated by performing breakage detection processing of the barrier bar. be able to.

  As a result of the determination, if there is a change in the raising / lowering state of the level crossing barrier (S1203: Yes), that is, when the level crossing barrier starts to shift from the lowered state to the raised state, the level crossing barrier is then raised. It is determined whether or not a predetermined time has elapsed since the start of the transition to the state (S1204). As a result of the determination, if the predetermined time has not elapsed (S1204: No), the determination processing S1204 is repeated until the predetermined time has elapsed. As described above, the waiting time elapses before actually starting the breakage detection processing of the barrier rod is a certain time (for example, about 5 seconds) until the barrier rod shifts from the horizontal state to the vertical state. What is necessary, and with the change in the inclination state of the barrier rod, the slave unit 110 detects the change in the inclination state of the barrier rod and transmits the inclination state notification, and the inclination information notification is received by the parent device 120. Since a certain amount of time is required until this time, the master unit 120 waits for the barrier rods to rise completely and secures time for the master unit 120 to reliably receive the tilt state notification from each slave unit 110. It is.

  Next, it is discriminate | determined by the break determination part 940 whether the inclination state notification is received from each subunit | mobile_unit 110 (S1205). That is, the vertical transition notification reception time from each slave unit 110 stored in the reception time management table 930 is compared with the current time acquired from the time management unit 920, so that it is within a predetermined time range (the current time It is determined whether or not a vertical shift notification is received from each slave unit 110 between a predetermined time and the current time. For example, if a difference between the current time and each vertical shift notification reception time stored in the reception time management table 930 is calculated and the difference is less than a predetermined threshold, the vertical shift notification is received. If the difference is greater than or equal to a predetermined threshold, it is determined that the vertical transition notification has not been received.

  As a result of the determination, if there is a slave unit 110 that has not received the tilt state notification (S1205: No), it is determined that the breaker has been broken for the shut-off device to which the slave unit 110 is attached, and is detected. The result output unit 124 is controlled, and a breakage detection signal for notifying the outside of the occurrence of breakage of breakage is output to the outside (S1206).

  On the other hand, when the inclination state notifications have been received from all the slave units 110 (S1205: Yes), it is determined that no breakage of the blocking rod has occurred, and the process returns to the above-described processing of S1201 again. The following process is repeated. Moreover, also when there is no change in the raising / lowering state of a level crossing barrier (S1203: No), it returns to the process of S1201 mentioned above again, and the process after S1201 is repeated.

  By performing the processing as described above, the parent device 120 can detect the failure of the child device and the occurrence of breakage of the barrier.

  As described above, according to the above-described railroad crossing breakage breakage detecting device 100, occurrence of a breakage breakage breakage can be automatically detected. In addition, since the occurrence of abnormality of the child device 110 itself is separately detected using the periodic notification by the child device 110, there is no inclination state notification from the child device 110 due to abnormality of the child device 110 itself. In this case, it is possible to prevent erroneous detection of occurrence of breakage breakage.

  As mentioned above, although embodiment of this invention has been described, it cannot be overemphasized that embodiment of this invention is not restricted above. For example, in the embodiment described above, the slave unit 110 transmits both the vertical shift notification and the horizontal shift notification to the master unit 120 as the tilt state notification. It is also conceivable that only one of the vertical transition notification and the horizontal transition notification is transmitted corresponding to the above.

100 Railroad crossing breakage breakage detection device 110, 110a to 110d Slave unit 111 CPU (microcontroller)
112 Inclination state detection unit 113 Wireless communication unit 114 Solar cell unit 115 ROM
116 RAM
117 Timer 120 Master 121 CPU (Microcontroller)
122 External condition input unit 123 Wireless communication unit 124 Detection result output unit 125 ROM
126 RAM
127 Timer 200 Railroad crossing breaker 210 Block bar 211 Front end side portion 212 Base end side portion 510 Inclination state acquisition unit 520 Time management unit 530 Notification necessity determination unit 540 Transmission processing unit 600 Transmission data 610 Child machine ID
620 Periodic notification flag 630 Inclination state flag 910 Reception processing unit 920 Time management unit 930 Reception time management table 931 Slave unit number field 932 Slave unit ID field 933 Periodic notification reception time field 934 Vertical transition notification reception time field 935 Horizontal transition notification reception time Field 940 Breakage determination unit 950 Slave unit defect determination unit

Claims (14)

A level crossing breakage breakage detection device for detecting breakage of a breakage bar included in a level crossing breaker,
A handset attached to the front end side of the blocking cage;
Based on the notification from the slave unit, comprising a master unit that determines whether or not the breakage of the barrier rod has occurred,
The slave is
When detecting a change in the inclination state of the barrier rod, an inclination state notification is transmitted to the base unit,
The base unit is
When the lifting / lowering state of the railroad crossing barrier changes, it is determined whether or not a tilt state notification accompanying the change is received from the slave unit, and if the tilt state notification is not received from the slave unit A railroad crossing breakage breakage detecting device, characterized in that it is determined that breakage has occurred in the breakage tackle to which the slave unit is attached. The level crossing breakage breakage detecting device according to claim 1, wherein the master unit determines whether or not the breakage of the breakage bar has occurred when the crossing breaker has shifted from a lowered state to an elevated state. The slave unit further periodically transmits a periodic notification to the master unit,
The master unit further determines whether or not the periodic notification is periodically received from the slave unit, and if the periodic notification is not regularly received from the slave unit, It is judged that abnormality has occurred, The level crossing interruption breakage detection device according to claim 1 or 2. In order to be able to detect the breakage of a plurality of barriers, equipped with a plurality of the slave units ,
The railroad crossing breakage breakage detection device according to any one of claims 1 to 3 , wherein each child device is attached to each of the plurality of breakage rods. A slave for a level crossing breakage breakage detecting device attached to the front end side of a breakage fence to be broken,
An inclination state detector for detecting a change in the inclination state of the barrier rod;
A slave unit comprising: a transmission processing unit that transmits a tilt state notification to a master unit when a change in tilt state is detected by the tilt state detection unit. The tilt state detection unit includes a tilt switch.
The cordless handset according to claim 5 characterized by things. The transmission processing unit transmits the tilt state notification to the parent device at least when the tilt state of the barrier rod shifts to a vertical state or a horizontal state. Or the subunit | mobile_unit of 6 . The slave unit according to any one of claims 5 to 7, wherein the transmission processing unit further periodically transmits a periodic notification to the master unit. A parent machine for a crossing breakage breakage detection device according to any one of claims 1 to 4 ,
A reception time management unit that manages the time when the tilt state notification is received from the slave unit;
A reception processing unit that stores the time when the tilt state notification is received in the reception time management unit when the tilt state notification is received from the slave unit;
A master unit, comprising: a breakage determination unit that determines whether or not a breakage has occurred in the breaker with the slave unit attached based on the reception time stored in the reception time management unit . The breakage determination unit
When the lifting / lowering state of the crossing barrier is changed, it is determined based on the reception time stored in the reception time management unit whether or not the inclination state notification accompanying the change is received from the child device,
10. The master unit according to claim 9 , wherein when the notification of the tilt state is not received from the slave unit, it is determined that a breakage has occurred in the blocking rod on which the slave unit is attached. The breakage determination unit
When it is detected that the lifting / lowering state of the level crossing barrier has changed based on a signal indicating the level of the level crossing barrier, the slave unit notifies the inclination state within a predetermined time range based on the time corresponding to the change. To determine whether or not
11. The device according to claim 10 , wherein when the notification of the tilt state is not received from the slave unit within the predetermined time range, it is determined that the breakage is generated in the blocking bar to which the slave unit is attached. Parent machine. The breakage determination unit
The master unit according to claim 10 or 11 , wherein when the railroad crossing breaker shifts from the lowered state to the raised state, it is determined whether or not the breaker is broken. The reception time management unit further manages the time when the periodic notification is received from the slave unit,
The reception processing unit stores the time at which the periodic notification is received in the reception time management unit when the periodic notification is received from the slave unit,
Based on the reception time of the stored periodically notifies the reception time management unit, according to claim 9, characterized in that abnormality in the child device further comprising a slave unit malfunction determination part that determines whether or not occurred The parent machine according to any one of to 12 . The slave unit defect determination unit
Whether to periodically receive a periodic notification from the slave unit, based on the reception time of the periodic notification stored in the reception time management unit,
14. The master unit according to claim 13 , wherein when a regular notification is not regularly received from the slave unit, it is determined that an abnormality has occurred in the slave unit.

Images