JP2007020343A - Operation recoding system for rolling stock - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technology that can be of help in the investigation of abnormal states, including an accident that occurs inside a rolling stock, by comparing the data indicating the operation state of the rolling stock with voices uttered in the rolling stock. <P>SOLUTION: This operation recoding system, a system mounted inside the rolling stock, is provided with an operation state obtaining portion that obtains the operation state of the rolling stock, a recording portion that records the operation state data obtained by the operation state obtaining portion with time data into a first recording medium having portability, a voice input portion for inputting voices generated inside the railway car, and a voice-recording portion that records voices inputted from the voice input portion with time data into a second recording medium having portability. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an operation recording system used in a railway vehicle such as a train or a train.

For railway vehicles such as trains, trains, etc., the travel status (distance information) of the railway vehicle, the time at that point (time information), and the travel distance (distance) from the starting station, etc. Information), a device or a device for measuring and recording the time transition (speed information) of the traveling speed and the like.

  Some railway vehicles are equipped with an inter-crew communication device for communication between crew members (for example, between a driver and a conductor). The inter-crew communication device includes a handset installed in a crew room (driver's room, conductor's cabin) and a voice line connecting the handset, and the crew can make a voice call using the device.

  Some railcars are equipped with an emergency notification device for passengers to notify crew members of emergency situations in the event of any emergency in a passenger cabin. The emergency call device includes an emergency call device installed in the cabin and an emergency reception device installed in the crew room. Passengers and crew can make emergency calls through the emergency call device and emergency reception device. it can.

  In addition, for railway vehicles, the crew's broadcast audio is sent from the crew room to the cabin, and the in-car broadcast device that broadcasts the broadcast voice in the cabin, operation guidance for passengers, opening and closing of doors (doors), etc. Some of them are equipped with an automatic broadcasting device that automatically broadcasts broadcast contents recorded in advance for in-car broadcast in the car according to the operation of the railway vehicle.

  Furthermore, some railcars are equipped with a radio communication device for communication between an operation commander of a driving command station installed on the ground and a crew member on board the railway vehicle.

  When an abnormal situation occurs in a railway vehicle and an accident occurs, conventionally, the driving state at the time of the accident was estimated from the above-mentioned point information, time information, distance information, speed information, etc., and the cause was investigated. . However, there are cases where it is difficult to know the factors that led to the driving state from only these driving conditions.

  On the other hand, there is no one that records the voice generated in the vehicle in the railway vehicle, such as the inter-crew communication device, the emergency notification device, the in-vehicle broadcasting device, and the automatic broadcasting device, which are mounted on the above-described railway vehicle.

  The present invention has been made in view of the above circumstances, and by investigating information indicating the operation state of a railway vehicle and sound generated in the railway vehicle, investigation of an abnormal situation such as an accident occurred in the railway vehicle. The purpose is to provide technology that can help.

  The present invention employs the following configuration in order to achieve the above-described object.

That is, the present invention is an operation recording system mounted in a railway vehicle,
An operation state acquisition unit for acquiring the operation state of the railway vehicle;
A recording unit that records the operation state information acquired by the operation state acquisition unit together with time information in a first recording medium;
A voice input unit for inputting voice generated in the railway vehicle;
A railway vehicle operation recording system comprising: a sound recording unit that records sound input from the sound input unit together with time information on the first recording medium or the second recording medium.

  The first and second recording media are preferably portable. The first recording medium and the second recording medium may be the same type or different types.

  The present invention is characterized in that the operation state acquisition unit acquires at least one of speed information, travel distance information, and travel point information of a railway vehicle.

  The present invention is characterized in that the operation state acquisition unit acquires at least one of information related to opening / closing of a door of a railway vehicle and operation information of an emergency brake.

  According to the present invention, the recording unit is configured to make a call voice made by using the inter-crew communication device for performing a communication call between crew members mounted on the railway vehicle, and passengers mounted on the rail vehicle are Call voice made using an emergency call device for contacting a vehicle, Call voice made using a radio device for a crew member of the railway vehicle to talk to personnel on the ground equipment, It records at least one of in-car broadcast sound using the in-car broadcast apparatus and sound picked up by a microphone installed in the railway vehicle.

The present invention further includes a control unit that, when detecting the recording and recording stop conditions, stops the recording and recording operations by the recording unit and the recording unit after elapse of a predetermined time,
When the recording unit and the recording unit start recording and recording operations under predetermined conditions, the recording unit and the recording unit continuously perform the recording and recording operations until the recording and recording operations are stopped based on the control by the control unit. And

In the present invention, the operation recording system operates by receiving power from a vehicle power source,
When the power supply from the vehicle power supply is stopped, it further includes a backup power supply that supplies operation power to the operation recording system instead of the vehicle power supply,
The backup power supply supplies power for continuing recording and recording operations to the recording unit and the recording unit for at least a predetermined period after the power supply is stopped,
When the recording unit and the recording unit start recording and recording operations under a predetermined condition, the recording unit and the recording unit continuously perform the recording and recording operations until power supply from the vehicle power source and the backup power source is stopped. .

In the present invention, the recording unit comprises:
Multiple recording / playback units prepared for multiple audio channels;
And a diagnostic unit for diagnosing whether or not each recording / reproducing unit normally performs a recording / reproducing operation.

In the present invention, the diagnostic unit comprises:
A test sound source that outputs test sound; and
The control of causing the test voice to be recorded in one of the plurality of recording / playback units at the first timing and playing back the test voice recorded on the recording / playback unit at the second timing thereafter, A recording / playback control unit for each of a plurality of recording / playback units;
A determination unit that compares the test sound reproduced by each recording / playback unit with the test sound from the test sound source, and determines whether the two are the same or different;
A diagnostic result output unit for outputting information indicating that the recording / playback unit is abnormal when the two are different;
It is characterized by including.

In the present invention, the diagnostic unit comprises:
A test sound source that outputs test sound; and
In the first timing, the test audio from the test sound source is recorded in the first recording / playback unit group when the plurality of recording / playback units are divided into the first and second recording / playback unit groups, Then, at the second timing, the test sound recorded in the first recording / playback unit group is played back, and the test sound from the test sound source is recorded in the second recording / playback unit group. And a recording / playback control unit for playing back the test voice recorded in the second recording / playback unit group at a third timing thereafter,
Test audio reproduced from the recording / playback units included in the first recording / playback unit group at the second timing and included in the second recording / playback unit group at the third timing A determination unit for comparing each of the test sound reproduced from the recording / playback unit and the test sound from the test sound source to determine whether or not both are the same;
And a diagnostic result output unit for outputting information indicating that the recording / reproducing unit is abnormal when a determination result that the two are different is obtained.

The present invention also provides a mounting portion for the first and second recording media according to claim 1,
A reading unit that reads time information and operation state information from the first recording medium attached to the attachment unit, and reads time information and audio information from the second recording medium;
Based on the time information, operation state information, and audio information read from the reading unit, the transition of the operation state based on the operation state information and the audio waveform based on the audio information are shown along the time axis. A screen information generator for generating operation record screen information;
A display control unit for displaying an operation record screen based on the operation record screen information on a display device;
A reproduction processing unit for reproducing audio based on the audio information;
An audio output unit for outputting the audio reproduced by the reproduction processing unit,
The display control unit is an information processing apparatus that displays an indicator corresponding to a reproduction position of audio information by the reproduction processing unit in association with a time axis of the operation recording screen.

  In addition, the present invention provides an automatic broadcast apparatus, an automatic train stop apparatus (ATS), an automatic train control apparatus (ATC), an automatic train operation apparatus (ATO), a train information management apparatus (Train Information) having a railway vehicle operation recording system. Management System).

  According to the present invention, a technology capable of helping to investigate an abnormal situation such as an accident that has occurred in a railway vehicle by comparing information indicating the operation state of the railway vehicle with audio generated in the railway vehicle. Can be provided.

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

<Data recorder>
FIG. 1 is a block diagram of equipment related to voice in a train mounted on a railway vehicle. FIG. 1 shows a railway vehicle in which a plurality of connected vehicles form one train. In the example shown in FIG. 1, the knitting is configured such that leading cars arranged at both ends of the knitting are connected in series so as to sandwich one or more intermediate cars.

  In the example shown in FIG. 1, each leading car has a crew room and a guest room, and the intermediate car has a guest room. Each crew room is provided with a driver's cab, and the crew room of the head car that is the head in the traveling direction of the railway vehicle is the driver's room, and the crew room of the head car that is the tail is the conductor room. In FIG. 1, the crew room on the left side of the page is the driver's cab, and the crew room on the right side is the conductor's room. Such a railway vehicle includes an in-car broadcast device 1, an inter-crew communication device 2, an emergency notification device 3, and an automatic broadcast device 4.

  The in-car broadcast device 1 is a device for broadcasting various types of guidance, boarding / exiting promotion, door opening / closing notices, etc. to passengers in the passenger cabin according to the operating state of the railway vehicle. The in-car broadcast device 1 is configured as follows. Each crew room is provided with a microphone 11 and a control amplifier 12 to which the microphone 11 is connected and which amplifies broadcasting sound. On the other hand, each cabin is provided with an output amplifier 13 and an in-vehicle speaker 14 connected to the output amplifier 13.

  Each control amplifier 12 and each output amplifier 13 are connected by a voice line 15 using a lead-through line laid between a plurality of vehicles. Also, each control amplifier 12 and each output amplifier 13 are connected by a broadcast control line 16 for setting each output amplifier 13 in an operating state.

  For example, when in-car broadcast is performed from the conductor compartment, the microphone 11 and the control amplifier 12 in the conductor compartment are turned on, and the output amplifier 13 in the required passenger compartment is turned on through the broadcast control line 16. Thereafter, when sound is input from the microphone 11, the sound reaches the output amplifier 13 of each cabin through the sound line 15, is amplified by the output amplifier 13 in the on state, and then is output from the vehicle speaker.

  The inter-crew communication device 2 is a device used for business communication calls between crew members such as a driver and a conductor. The inter-crew communication device 2 is configured as follows. That is, a communication device 21 including a handset is installed in the crew room. When the intermediate vehicle has a conductor's compartment, the communication device 21 is also installed in the conductor's compartment. The communication devices 2 are connected by a voice line 22 for communication calls between crew members using a lead-through line between vehicles.

For example, when business communication is performed between the driver and the conductor located in the crew room of each leading vehicle, one of the driver and the conductor (for example, the conductor) hooks up the handset of the communication device 21. Then, a ringing tone sounds at the communication device 21 on the other side (driver). When the driver hooks off the handset in response to this, the voice line between the two communication devices 21 is opened. In this state, the driver and the conductor can send voice to the other party via the voice line 22 and can make a call (business communication).

  The emergency call device 3 is a device for a passenger to contact a crew member (emergency call between the passenger and the crew member) when an emergency or abnormal situation occurs in a cabin. The emergency call device 3 is configured as follows. In each guest room, an emergency call device 31 operated by a passenger is set. The emergency call device 31 includes an emergency contact push button, a microphone, and a speaker.

  On the other hand, an emergency call receiver 32 is installed in the crew room, and a handset 33 is connected to the emergency call receiver 32. Each emergency call device 31 and each emergency call receiver 32 are connected by a voice line 34 and a plurality of control lines (not shown).

  When a passenger in a certain cabin reports an emergency situation to the crew, the passenger presses the push button of the emergency call device 31. Then, an emergency call signal is transmitted to the crew room through one of the control lines, and a lamp provided in the emergency call receiver 32 is turned on or a buzzer sounds. In response to this, when the crew member picks up the handset 33 (hooks up), the voice line 34 is opened, and the microphone and speaker of the emergency call device 31 on the passenger side are turned on. Thus, the passenger can transmit the voice to the crew by inputting the voice from the microphone, and can hear the voice of the crew, etc. from the speaker.

  The automatic broadcast device 4 includes an automatic broadcast unit (broadcast card) 41. The automatic broadcasting unit 41 includes a memory that records programs and data, a processor that executes the programs recorded in the memory, an input / output interface, and the like.

  In the memory, audio data for automatic broadcasting (broadcast data: broadcast text), automatic guidance broadcasting (for example, departure broadcasting, arrival warning broadcasting, arrival broadcasting, transfer guidance broadcasting, etc.), CM (advertisement) broadcasting, door Audio data such as door opening / closing caution broadcasts that are broadcast with opening and closing, boarding / exiting promotion broadcasts that prompt passengers to get on and off, emergency brake broadcasts that are broadcast when an emergency brake is applied when the vehicle speed is above a predetermined speed (for example, 20 km or more) Is stored.

  The automatic broadcasting device 4 has one or more terminals for inputting railway vehicle operation state information, and the vehicle speed, travel distance, travel point, door state, emergency brake operation state, etc. are operated through this terminal. State information is entered. The program selects and reproduces voice data corresponding to the input operation state information, and connects to the above-described in-car broadcast voice line 15. Further, the necessary output amplifier 13 is turned on through the control line 16. As a result, the automatic broadcast sound is output (broadcast) from the in-vehicle speaker 14 in an appropriate cabin. It is also possible to configure the operation monitoring device 8 in the crew room so that various operation information including automatic broadcast activation conditions can be automatically set. In this case, the input of the operation state information described above can be omitted.

  Each crew member room is provided with a wireless device 5 for making a business communication call between a railway vehicle and a ground facility (for example, a railway vehicle operation command center). The wireless device 5 has at least a receiving line 51 from the receiving antenna, and can listen to the voice from the receiving line 51 in the crew room.

  In at least one of the crew cabins, a data recorder 100 is installed as a railway vehicle operation recording system according to the present invention. The data recorder 100 operates by receiving power supply from the vehicle power source. Further, the data recorder 100 is input with operation state information obtained from various devices mounted on the railway vehicle.

Further, the data recorder 100 includes in-car broadcast voice from the above-described voice lines 15, 22, 34, 51, communication calls between crew members, emergency calls, voice / voice information (voice information) between command centers, and a crew room. And a plurality of terminals (input units) for inputting sound from the microphone 7 that is always on during operation. The data recorder 6 records and records the driving state information and the voice information in synchronization.

  FIG. 2 is a diagram showing a configuration example of the data recorder 100 shown in FIG. In FIG. 2, the data recorder 100 is roughly divided into a data recording unit 110 (corresponding to a recording unit) that records the above-described operation state information, and a voice recording unit 120 (corresponding to a recording unit) that records the above-described audio information. An amplifier 130 that amplifies various sounds (audio signals) recorded by the audio recording unit 120, a control unit 140 that controls the operation of the data recording unit 110 and the audio recording unit 120, and an operation in each of these units And a power supply unit 150 that supplies electric power.

  The data recorder 100 has a terminal (connector) TP for receiving power from a vehicle power supply (DC 100 V or DC 24 V). The electric power from the vehicle power supply input to the terminal TP is input to the power supply unit 150.

  The power supply unit 150 includes a changeover switch 151 between DC 100V and DC 24V. When the changeover switch 151 selects DC 24V, the DC 24V power from the vehicle power supply is input to the control board 141 constituting the control unit 140 via the backflow prevention diode 152. On the other hand, when the changeover switch 151 selects DC100V, DC100V electric power from the vehicle power supply is provided at the subsequent stage of the changeover switch 151, and converts a DC100V to DC24V (DC-DC converter). ) 153.

The 24 VDC power output from the DC-DC converter 153 is input to a constant voltage power supply circuit (AVR) 155 provided at the subsequent stage through a backflow preventing diode 154. The AVR 155 also receives DC 24V power that has passed through the diode 152. The AVR 155 includes each unit of the data recorder 100 (data recording unit 110, audio recording unit 120).
, Amplifying unit 130, control unit 140, etc.) are provided with a stable operating voltage.

Furthermore, the power supply unit 150 includes a backup battery (
Secondary battery) 156. The secondary battery 156 is configured to be charged by receiving an output from the AVR 155, and is configured to discharge when power supply from the AVR 155 is stopped.

Due to the discharge, the power from the secondary battery 156 is replaced with each unit (data recording unit 11 instead of the vehicle power source).
0, audio recording unit 120, etc.). And when the discharge of the secondary battery 156 is completed,
The data recording unit 110 and the voice recording unit 120 stop the recording and recording operations when the operation power supply is stopped. The capacity of the secondary battery 156 is configured such that power supply is continued for at least a predetermined period (for example, several seconds to several minutes) after the output of the AVR 155 is stopped (power supply from the vehicle power supply is stopped). The

  The control unit 140 includes a radio clock unit 142, a contact unit 143, a speed detection unit 144, a failure detection unit 145, a recording stop activation unit 146, a power interruption detection unit 147, and a main control on the control board 141. A unit (MCU) 148 is mounted.

  The radio timepiece unit 142 detects time information (year / month / day / hour / minute / second) input from the radio timepiece antenna unit 201 installed in the railway vehicle to the data recorder 100 through the terminal TC1. The detected time information is given to the MCU 148.

The contact unit 143 detects a contact signal from the railway vehicle input via the terminal TC2. Here, the contact unit 143 has a plurality of channels (for example, 2) for obtaining a contact signal.
4). Each channel is connected with an analog or digital signal indicating vehicle operation state information (including vehicle state information) as a contact signal. For example, as the vehicle operation state information, various operation state information serving as the activation conditions for the above-described automatic broadcasting device are input. Each contact signal is input to the MCU 148.

That is, as the operation status information, the sea / mountain door opening / closing information on which side of the sea side door or the mountain side door is opened / closed, and the passenger is notified by voice of which door is opened prior to the door opening operation (for example, There is door opening notice command information such as “Please be careful that this door opens”, door closing command information for signaling the passenger with a chime when the door closes, and boarding / exiting promotion information that prompts passengers to get on and off.

Information indicating the state of each door and information indicating the operation state of the emergency brake are also added to one of the contact signals. Furthermore, an acceleration sensor that detects the acceleration of the railway vehicle, an inclination sensor that detects the inclination of the railway vehicle, and a fire sensor that detects a fire of the railway vehicle (
Various sensor output signals for detecting an abnormality in the railway vehicle mounted on the railway vehicle indicating the state of the vehicle such as a temperature sensor can be connected to the contact unit 143 as a contact signal. Multiple channels are assigned for each piece of information (including sensor output).

  The speed detection unit 144 receives an output signal from the tacho generator (TG) input into the data recorder 100 from the terminal TC3. The speed detection unit 144 calculates the traveling speed (vehicle speed) of the railway vehicle based on the output signal from the tacho generator. The calculated traveling speed is input to the MCU 148.

The failure detection unit 145 receives failure detection signals from the data recording unit 110 and the audio recording unit 120, respectively. The failure detection unit 145 is connected to a failure display LED (light emitting diode) 202 (which may be a lamp), a failure buzzer 203, and a buzzer stop switch 204.

  The LED 202 includes a data recording board 111 constituting the data recording unit 110 and a plurality of LEDs prepared for each of the plurality of sound recording boards 121 constituting the sound recording unit 120. The failure detection unit 145 identifies a failed board from the content of the failure detection signal, and lights an LED corresponding to this board. At this time, the failure detection unit 145 sounds the failure buzzer 203 to notify the failure. When the buzzer stop switch 204 is activated in response to this sounding, the failure detection unit 145 stops the sounding of the failure buzzer 203.

  The recording stop activation unit 146 provides a recording end control signal to the data recording unit 110 and the audio recording unit 120 when detecting a stop condition of recording and recording operations by the data recording unit 110 and the audio recording unit 120. The recording stop activation unit 146 is connected to a recording stop switch operated by a crew member. When the recording stop switch is turned on, the recording stop activation unit 146 detects this as a stop condition.

  The recording stop activation unit 146 receives a recording stop instruction from the MCU 148 when an abnormal sensor value is detected in the MCU 148. The recording stop activation unit 146 detects reception of this recording stop instruction as a stop condition.

  The power interruption detection unit 147 monitors the electric power from the vehicle power source that is input from the power supply unit 150 to the control unit 140. The power interruption detection unit 147 determines that the power supply from the vehicle power supply has been stopped when the power from the power supply unit 150 drops below a threshold, and sends a recording end control signal to the data recording unit 110 and the audio recording unit 120. give.

  The MCU 148 includes a memory in which a program and data are recorded, a processor that executes the program, an input / output interface, and the like. The MCU 148 performs the following operation according to a program executed by the processor.

  The MCU 148 inputs time information obtained from the radio clock unit 142 to the audio recording unit 120. This time information is input to each sound recording board 121 constituting the sound recording unit 120.

Further, the MCU 148 calculates the travel distance from the time information and the vehicle speed (speed information) obtained by the speed detection unit 144. Then, the MCU 148 gives the time information, the speed information, and the contact signal (contact information: operation state information and state information) obtained by the contact unit 143 to the data recording unit 110. At this time, the MCU 148 may determine the travel point of the railway vehicle from the travel distance and the point information (prepared in advance) and give it as one piece of contact information. Moreover, you may make it utilize the information obtained from the GPS apparatus (not shown) mounted in the railway vehicle for the travel point.

The data recording unit 110 has a configuration as shown in FIG. 3 mounted on a data recording board 111. As shown in FIG. 3, the data recording board 111 has a mounting portion for a portable recording medium MD as a first recording medium (for example, a semiconductor memory excellent in earthquake resistance such as compact flash (registered trademark)). 1111, a writing / reading unit 1112 for writing data to and reading data from the recording medium MD mounted on the mounting unit 1111, and a file to be written by the writing / reading unit 1112 And a buffer 1114 for accumulating time / speed / distance / contact point information from the control unit 140.

  The mounting portion 1111 includes a slot into which the recording medium MD is inserted and a connector provided in the slot. By connecting the recording medium MD to the connector, the writing / reading unit 1112 and the recording medium MD are electrically connected.

The file generation unit 1113 generates a divided file in which time / speed / distance and contact information (hereinafter referred to as “operation information”) are divided every predetermined time (for example, 1 minute). File generator 1
When operation information for a predetermined time is accumulated in the buffer 1114, the operation 113 reads the operation information and generates a data file of operation information having a predetermined format. At this time, the file generation unit 1113 gives a title (name) to the data file. Here, the time based on the time information can be given as the name.

  The file generation unit 1113 gives the created data file to the writing / reading unit 1112. The writing / reading unit 1112 includes a driver circuit for the recording medium MD, and writes the data file obtained from the file generation unit 1113 to the recording medium MD.

  In addition, the writing / reading unit 1112 performs sequential and endless recording on the recording medium MD. That is, the writing / reading unit 1112 writes the data file in order from the head or tail address of the recording medium MD, for example. Thereafter, when the data file cannot be written any more, the writing / reading unit 1112 again writes the data file in order from the head or tail address.

  As described above, when the recording medium MD is filled with the data file, the writing / reading unit 1112 performs overwriting in order from the oldest at the time of recording. As a result, the operation information from the time point when the recording is stopped to the time point that is a certain time (maximum recording time of the recording medium MD) is recorded in the recording medium MD. Therefore, the data file before and after the occurrence of an abnormal situation can be easily specified by tracing the data file from the latest recorded one.

  The data file creation and writing operations described above are performed in accordance with a recording start / end control signal provided from the control unit 140. That is, when a recording start control signal is input from the control unit 140, the above-described data file creation and writing operations are started. On the other hand, when the recording end control signal is input from the control unit 140, the data file creation and writing operations are stopped.

  When the power supply is started, the data recording board 111 checks whether or not the writing process to the recording medium MD is properly performed. Therefore, the data recording board 111 is provided with an operation check unit 1115.

  The operation check unit 1115 includes a memory that stores test data, and a comparison unit that compares the result of reading by the writing / reading unit 1112 and the test data. The operation check unit 1115 is configured to start when power supply is started.

  When activated, the operation check unit 1115 first writes test data into the buffer 1114. Next, the operation check unit 1115 gives an instruction to the file generation unit 1113 to read the test data and generate a file. Further, the operation check unit 1115 gives an instruction to the write / read unit 1112 to write a data file at a predetermined address of the recording medium MD. Thereby, the file generation unit 1113 generates a data file of test data, and the writing / reading unit 1112 writes the data file at a predetermined address of the recording medium MD.

  Next, the operation check unit 1115 gives an instruction to the writing / reading unit 1112 to read the data file from a predetermined address of the recording medium MD, and receives the corresponding data file from the writing / reading unit 1112. The operation check unit 1115 extracts test data included therein. Subsequently, the operation check unit 1115 compares the extracted test data with the test data stored in the memory, and determines whether or not they are the same.

At this time, if a mismatched portion is detected between the data read result and the test data (if they are different), the operation check unit 1115 is placed on the data recording board 111 (including the recording medium MD). Judge that there is a failure. Then, the operation check unit 1115
A failure detection signal is sent to the control unit 140.

On the other hand, when the test data read from the recording medium MD completely matches the test data in the memory, the operation check unit 1115 ends the process (stops the operation). In this case, a response to the control unit 140 is not performed. Control unit 140 (M of control unit 140
The CU 148) sends a recording start control signal to the data recording board 111 on the assumption that the data recording board 111 is normal if no failure detection signal is transmitted within a predetermined time after the power is turned on. As a result, the data recording board 111 starts the operation information recording operation. Note that the test data file written in the recording medium MD is erased by overwriting.

  In this way, when power supply from the vehicle power supply is started, self-diagnosis processing (operation check) is performed on the data recording board 111, and if there is a failure, this is notified to the control unit 140, The crew is notified by the LED 202 and the buzzer 203.

  Returning to FIG. 2, the amplifying unit 130 includes a number of amplifiers corresponding to the audio channels prepared in the data recorder 100. In this example, the data recorder 100 has a signal line connected to the voice line 15, an input terminal T 1 connected to the voice line 15 via a signal line, an input terminal T 2 connected to the voice line 22 via a signal line, and the voice line 34. The input terminal T3 connected via the signal line, the input terminal T4 connected via the signal line to the reception line 51, and the input terminal T5 connected to the microphone 7.

  The amplifying unit 130 includes amplifiers A1 to A5 connected to the input terminals T1 to T5, respectively. The amplifier A1 amplifies in-car broadcast sound input from the input terminal T1. A voice channel CH1 is assigned to the in-car broadcast voice. The amplifier A2 amplifies the inter-crew communication call voice input from the input terminal T2. A voice channel CH2 is assigned to the crew call communication voice.

  The amplifier A3 amplifies the emergency call voice input from the input terminal T3. A voice channel CH3 is assigned to the emergency call voice. The amplifier A4 amplifies the voice on the radio apparatus reception line input from the input terminal T4. A voice channel CH4 is assigned to this voice. The amplifier A5 amplifies the sound collected by the microphone 7. A voice channel CH5 is assigned to this voice.

The audio recording unit 120 includes a plurality (here, 5) of audio recording boards 121 (recording / reproducing units) prepared for the audio channels CH1 to CH5. The output terminals of the amplifiers A1 to A5 are connected to the input terminals of the corresponding audio recording board 121. The audio recording unit 120 records the audio of each audio channel on a different recording medium.

FIG. 4 is a diagram illustrating a configuration example of each audio recording board 121. In FIG. 4, the plurality of audio recording boards 121 have the same configuration. The audio recording board 121 has a mounting portion 1211 for a portable recording medium MS (for example, a semiconductor memory having excellent earthquake resistance such as Compact Flash (registered trademark)) as a second recording medium.

  The audio recording board 121 includes a demodulator 1212 that performs demodulation processing on the audio signal from the corresponding amplifier, an A / D converter 1213 that converts the demodulated audio signal into audio digital data, and audio digital data. A file generation unit 1215 that generates an audio file, and a writing / reading unit 1216 that writes an audio file to the recording medium MS attached to the attachment unit 1211 and reads out the audio file from the recording medium MS. .

  Furthermore, the audio recording board 121 outputs a sound based on the audio data generated by the reproduction unit 1217 and the reproduction unit 1217 that performs reproduction processing (audio data generation) on the audio file read by the writing / reading unit 1216. A sound control unit (sound mechanism) 1218 that outputs sound, and a speaker 1219 that outputs a sound signal from the sound control unit 1218.

  The recording medium MS has a storage capacity considering the maximum recording time. For example, when a compact flash (registered trademark) memory is applied as the recording medium MS, recording of up to about 4 hours is possible by applying a 192 MB memory. In addition, when a 1 GB CompactFlash (registered trademark) memory is applied, recording of up to about 24 hours is possible.

  Further, the mounting portion 1211 can be configured by a slot into which the recording medium MS is inserted, a connector provided in the slot, and the like. The recording medium MS attached to the attachment unit 1211 is connected to the writing / reading unit 1216.

The audio recording board 121 stores the audio digital data (audio data) from the A / D converter 1213 in the buffer 1214, and the file generation unit 1215 divides the audio data every predetermined time unit (for example, 1 minute). Create an audio file.

  When the audio data for a unit time is accumulated in the buffer 1214, the file generation unit 1215 reads the audio data from the buffer 1215, and creates an audio file for the audio data. At this time, the audio file is created in a format reproducible on an information processing apparatus such as a personal computer. For example, on the information processing apparatus, an audio file is created in a data format that can be converted into a reproducible data format using data format conversion software.

At this time, the file generation unit 1215 adds a time (time stamp) based on the time information received from the control unit 140 to the audio file as an audio file name. As a result, an audio file having the same name as the data file is generated. The data file and audio file having the same name store operation information and audio information within the same unit time, respectively.

  When the creation of the audio file is completed, the file generation unit 1215 outputs the audio file to the writing / reading unit 1216.

  The writing / reading unit 1216 performs an operation based on a recording / playback signal input to the audio recording board. That is, the writing / reading unit 1216 writes the audio file input from the file generation unit 1215 to the recording medium MS as a recording mode operation while the recording signal is supplied. On the other hand, the write / read unit 1216 reads the audio file from the recording medium MS and supplies it to the playback unit 1217 as a playback mode operation while the playback signal is being supplied.

  The reproduction unit 1217 extracts audio data from the audio file, reproduces an audio signal corresponding to the audio data, and inputs the audio signal to the audio control unit 1218. The sound control unit 1218 generates and amplifies sound based on the sound signal (sound data) using a sound source included in the sound control unit 1218 and outputs the sound. The sound output from the sound control unit 1218 is output from the speaker 1219.

  In addition, the writing / reading unit 1216 performs sequential and endless recording on the recording medium MS in the recording mode. That is, the writing / reading unit 1216 writes the audio file sequentially from the head or tail address of the recording medium MS, for example. Thereafter, when the audio file cannot be written any more, the writing / reading unit 1216 writes the audio file again in order from the head or tail address.

  As described above, when the recording medium MS is filled with the audio file, the writing / reading unit 1216 performs overwriting in order from the oldest at the time of recording. As a result, sound is recorded on the recording medium MS up to a time point that is a certain time (maximum recording time of the recording medium MS) from when recording is stopped. Therefore, the audio files before and after the occurrence of an abnormal situation can be easily identified by tracing the audio file from the latest recorded one.

  The voice recording unit 120 has a self-diagnosis function of each voice recording board 121. FIG. 5 is a diagram illustrating a configuration example for self-diagnosis of the voice recording unit 120. FIG. 6 is an explanatory diagram of the self-diagnosis method. FIG. 7 is a time chart showing an example of the self-diagnosis process.

  As shown in FIG. 5, the audio recording unit 120 is configured as follows. A plurality of audio recording boards 121 corresponding to the audio channels CH1 to CH5 are arranged in parallel via a set of switches arranged on the input side and the output side thereof. Further, a test audio signal (test signal) from the test sound source 122 is input to an arbitrary audio recording board 121 via an on-side input side switch and recorded.

The test sound source 122 is connected to the waveform detection unit 124 via the signal line 123. The waveform detection unit 124 receives a test signal from the test sound source 122 (voice recording board 121).
(Sounds recorded at) are detected. In addition, the test signal (reproduction signal) output from each audio recording board 121 is detected by the waveform detection unit 125 through an on-state switch. The output terminals of the waveform detection units 124 and 125 are compared by a comparator (exclusive OR (XOR) circuit) 126, and the comparison result (output signal) of the comparator 126 is input to the self-diagnosis control unit 127. .

The self-diagnosis control unit 127 outputs / stops the test signal from the test sound source 122, turns on / off the switches SW1 to SW10 provided on both sides of each sound recording board 121, and records / outputs each sound recording board 121. While controlling the reproduction mode setting, the audio recording board normal / abnormal judgment and failure detection output based on the comparison result from the comparator 126 are performed.

  As the test signal, for example, a tone signal having a predetermined frequency and period T as shown in the upper part of FIG. 6 is used. In FIG. 5, when only the switches SW1 and SW2 are on, the test signal from the test sound source 122 is input to the waveform detection unit 124 through the signal line 123, and the audio of the audio channel CH1 through the switch SW1. The data is input to the recording board 121 and recorded. When the voice recording board 121 reproduces the recorded test signal, the reproduced signal of the test signal recorded previously is input to the waveform detector 125 through the switch SW2. That is, at the positions (A), (B), and (C) shown in FIG. 5, a signal waveform as shown in the upper part of FIG. 6 appears.

  Each waveform detection unit 124 and 125 detects a signal of one cycle including a square wave as shown in the middle part of FIG. As described above, it is preferable that the waveform from which the test signal is detected be a combination of a voiced section and a silent section.

Then, a square wave signal as shown in the lower part of FIG. 6 is input to the comparator 126 from the waveform detectors 124 and 125, and comparison processing is performed. The lower part of FIG. 6 shows (D) and (
The waveform that appears as the position E) (the output signals of the waveform detectors 124 and 125) is shown. Comparator 1
26 compares the input test signal and the reproduction signal in phase, and if both are the same, outputs “0” as the comparison result signal, and if they are not the same (if they are different), 1 ″ is output as a comparison result signal.

  When the self-diagnosis control unit 127 receives the comparison result signal “0”, the self-diagnosis control unit 127 determines that the audio recording board 121 that has output the reproduction signal that is the basis of the comparison result is normal. On the other hand, when the comparison result signal “1” is received, it is determined that the audio recording board 121 that outputs the reproduction signal that is the basis of the comparison result is abnormal (failure). If it is determined that there is an abnormality (failure), the self-diagnosis control unit 127 outputs a failure detection signal indicating a failure of the voice recording board 121. This failure detection signal is given to the control unit 140.

  FIG. 7 is a time chart showing an example of the self-diagnosis process. In this example, the normality of the corresponding audio recording board 121 is determined in order from the audio channel CH1. The self-diagnosis process shown in FIG. 7 includes phases F1 to F6. The self-diagnosis process is started, for example, with the start of power supply (power-on) to the voice recording unit 120 as a trigger.

  It is assumed that the switches SW1 to SW10 are all in an OFF state at the start time (first timing) of the process (phase F1). When the self-diagnosis process is started, the self-diagnosis control unit 127 turns on the switch SW1 and sets the voice recording board 121 (referred to as board 121A) of the voice channel CH1 to the recording mode (giving a recording control signal). ). Thereby, in the phase F1, the test signal from the test sound source 122 is recorded by the board 121A.

  At the start time (second timing) of the next phase F2, the switch SW1 is turned off and the switches SW2 and SW3 are turned on. Also, the board 121A is switched to the playback mode, and the audio recording board 121 (referred to as board 121B) of the audio channel CH2 is set to the recording mode. Thereby, in phase F2, the reproduction signal of the board 121A and the test signal are compared, and at the same time, the test signal is recorded on the board 121B through the switch SW3.

In the next phase F3, the switches SW2 and SW3 are turned off and the switches SW4 and SW5 are turned on. Also, the board 121B is switched to the playback mode, and the audio recording board 121 (referred to as board 121C) of the audio channel CH3 is set to the recording mode. Thereby, in phase F3, the reproduction signal of the board 121B and the test signal are compared, and at the same time, the test signal is recorded on the board 121C through the switch SW5.

  In the next phase F4, the switches SW4 and SW5 are turned off and the switches SW6 and SW7 are turned on. Further, the board 121C is switched to the reproduction mode, and the audio recording board 121 (referred to as board 121D) of the audio channel CH4 is set to the recording mode. Thereby, in the phase F4, the reproduction signal of the board 121C and the test signal are compared, and at the same time, the test signal is recorded on the board 121D through the switch SW7.

  In the next phase F5, the switches SW6 and SW7 are turned off, and the switches SW8 and SW9 are turned on. Also, the board 121D is switched to the playback mode, and the audio recording board 121 (referred to as board 121E) of the audio channel CH5 is set to the recording mode. Thereby, in phase F5, the reproduction signal of the board 121D and the test signal are compared, and at the same time, the test signal is recorded on the board 121E through the switch SW9.

  In the next phase F6, the switches SW8 and SW9 are turned off and the switch SW10 is turned on. Further, the board 121E is switched to the reproduction mode. Thereby, in phase F6, the reproduction signal of the board 121E and the test signal are compared. When phase F6 ends, switch SW10 is turned off.

  According to such processing, the self-diagnosis control unit 127 determines the normality of the boards 121A, 121B, 121C, 121D, and 121E based on the comparison results in the phases F2, F3, F4, F5, and F6, respectively. Can do. If it is determined that there is an abnormality (failure), a failure detection signal including identification information of the corresponding board 121 can be sent to the control unit 140.

  As described above, in the phases F2 to F5, the number of phases (processing time) necessary for self-diagnosis is shortened by simultaneously recording and reproducing. In other words, on the premise that the playback signal and the recording signal are the same, the waveform at the time of recording is played back, and by comparing the playback waveform with the recording waveform to the next audio channel, the self-diagnostic time can be set for each board. Compared to recording and playback, it is shortened to about ½.

  Instead of the configuration example related to the self-diagnosis shown in FIG. 5, a configuration example as shown in FIG. 8 can be applied. FIG. 8 is a diagram illustrating another configuration example of the self-diagnosis function. In FIG. 8, the voice channels CH1 to CH5 are classified into two groups. In this example, the voice channels CH1, CH3, and CH5 are classified into the first group, and the voice channels CH2 and CH4 are classified into the second group.

  The test sound source 122 is connected to the input terminals of the boards 121A, 121C, and 121E corresponding to the first group of audio channels via the switch SW11. The test sound source 122 is connected to the input terminals of the boards 121B and 121D corresponding to the second group of audio channels via the switch SW12. Further, the test sound source 122 is connected to the waveform detection unit 124.

Further, waveform detectors 125A to 125E prepared for each board (channel) are connected to output terminals of the boards 121A to 121E. Further, comparators (XOR) 126A to 126E prepared for each board (channel) are provided, and each of the comparators 126A to 126E has a waveform detected by the waveform detector 124 and a corresponding waveform detector (125A to 125A to 126A). The reproduction waveform from any one of 125E) is compared, and the comparison result is input in parallel to the self-diagnosis control unit 127A.

  The principle of the self-diagnosis method is the same as that of the configuration example shown in FIG. 5 as shown in FIG. FIG. 9 is a time chart for explaining a self-diagnosis method using the configuration example of FIG. In FIG. 9, at the start of phase F1 (first timing), switch S11 is turned on and switch S12 is turned off. Also, the boards 121A, 121C and 121E belonging to the first group are set to the recording mode. As a result, the test signal from the test sound source 122 is recorded by the boards 121A, 121C, and 121E.

  At the start time (second timing) of the next phase F2, the switch S11 is turned off, the switch SW12 is turned on, the board belonging to the first group is set to the reproduction mode, and the board belonging to the second group 121B and 121D are set to the recording mode.

  As a result, the test signal is recorded on the board belonging to the second group, the reproduction signal of the test signal output from the board belonging to the first group, and the test signal from the test sound source 122 (recorded on the second group). Comparison with the test signal to be performed is performed.

  At the start time (third timing) of the next phase F3, the switch S12 is turned off, and the boards belonging to the second group are set to the reproduction mode. Thereby, the reproduction signal of the test signal output from the board belonging to the second group is compared with the test signal output from the test sound source 122, respectively.

  The self-diagnosis control unit 127A receives in parallel the comparison result signals from the comparators 126A, 126C, and 126E corresponding to the first group obtained by the first group regeneration operation in the phase F2.

  The self-diagnosis control unit 127A receives in parallel the comparison result signals from the comparators 126B and 126D corresponding to the second group obtained by the second group regeneration operation in the phase F3.

  If any of the comparison result signals indicates a comparison result indicating that the signal waveforms are different, the self-diagnosis control unit 127A indicates that the board corresponding to the comparator that outputs the comparison result signal is abnormal (failure). The failure detection signal shown is output to the control unit 140.

  According to the configuration example and method illustrated in FIGS. 8 and 9, the number of phases required for self-diagnosis can be halved compared to the configuration example and method illustrated in FIGS. 5 and 7. Note that the test signal recorded on the recording medium MS is erased by overwriting.

  The failure detection signal is input to the failure detection unit 145 of the control board 141 (FIG. 2). Then, the failure detection unit 145 turns on the LED in the corresponding failure display LED 202 and sounds the failure buzzer 203 based on the board identification information included in the failure detection signal.

  As a result, if there is an abnormality (failure) in each board when the data recorder 100 is turned on, that fact is transmitted to the crew. Normally, the data recorder 100 is turned on before starting operation. Therefore, the crew can know the failure of the data recorder 100 before the operation starts.

The failure detection unit 145 has a timer that waits for reception of failure detection signals from the data recording unit 110 and the audio recording unit 120, and waits for reception of the failure detection signal until the timer expires. If the failure detection signal is not input when the timer expires, the data recording unit 110 and the audio recording unit 120 are assumed to be normal, and the fact is transmitted to the MCU 148. Then, the MCU 148 gives a recording start control signal to the data recording unit 110 and the voice recording unit 120, and starts data recording and voice recording with these.

  Incidentally, the MCU 148 has a threshold value for determining whether or not various sensor outputs (sensor values) input as contact signals indicate a normal range. For example, when the sensor values of the acceleration sensor, the inclination sensor, and the fire sensor (temperature sensor) are values indicating an abnormality exceeding a threshold value, it is determined that an abnormal situation has occurred in the railway vehicle. In this case, the MCU 148 notifies the recording stop activation unit 146 of the occurrence of an abnormal situation.

  When the recording stop activation unit 146 receives the notification from the MCU 148 as a stop condition, the recording stop activation unit 146 starts a timer (provided by the recording stop activation unit 146) that measures a predetermined time (for example, several seconds to several minutes). When the timer expires, the recording stop activation unit 146 transmits a recording end control signal to the data recording unit 110 and the audio recording unit 120. When receiving the recording end control signal, the data recording unit 110 and the audio recording unit 120 end the recording and recording operations. Even when the recording stop switch is manually turned on by a crew member, the recording stop activation unit 146 performs the same operation using this as a stop condition.

  The power-off detection unit 147 has a timer similar to that of the recording stop activation unit 146, and starts the timer when detecting the stop of power supply from the vehicle power supply. When a predetermined time has elapsed and the timer has expired, a recording end control signal is transmitted to the data recording unit 110 and the audio recording unit 120. As a result, the data recording unit 110 and the audio recording unit 120 end the recording and recording operations.

  Thus, according to the data recorder 100, the recording and recording operations are stopped after the elapse of a predetermined time after the abnormal situation that has occurred in the railway vehicle is detected. As a result, when investigating the cause of an abnormal situation, it is possible to easily find a file before and after the occurrence of the abnormal situation by conducting a retrospective investigation in order from the file stored and recorded last.

In the embodiment described above, analog or digital signals representing various events serving as activation conditions for the automatic broadcast apparatus are captured as one of the contact signals (contact information (operation status information)). For example, various signals indicating the operating state of the automatic train stop device (ATS) (for example, a signal related to color recognition of a traffic light, an instruction speed corresponding to the color of the traffic light, or a red signal It is possible to take in as a contact signal and record it on the recording medium MD as operation status information). It is.

  Further, not only the ATS, but also a signal indicating an operation state of an automatic train control device (ATC), an automatic train operation device (ATO), a train information management device (TIMS), etc. is captured as a contact signal and recorded on the recording medium MD. It is possible to configure. Further, the data recorder 100 can be incorporated as a part of an automatic broadcast device, ATS, ATC, ATO, train information management device. For example, when it is configured integrally with an automatic broadcast device, it is possible to share the start condition input part to the automatic broadcast device and the contact condition input part to the data recorder, thereby reducing the number of parts. it can.

In the above-described embodiment, (1) in-car broadcast sound (including automatic broadcast), (2) crew crew contact voice, (3) emergency call voice, (4) wireless contact transmission / reception voice, and (5) crew cabin voice. (Sound collected by the microphone 7) is recorded on an individual recording medium MS as a separate channel. However, it is possible to reduce the number of audio channels (required number of recording media) by collecting the audios (1) to (5).

For example, the voice channel and the recording medium MS can be combined into one. That is, (5) The crew cabin sound is always picked up, and for the sounds of (1) to (4), the corresponding device is detected by detecting the activation condition (pressurization or contact condition) of the corresponding device. When it is activated, it may be recorded on the same channel in a manner superimposed on the cabin cabin sound. At this time, (1) the in-vehicle broadcast sound (including automatic broadcast) may be recorded at a lower level than the crew cabin sound.

  Specifically, for example, a configuration between the amplification unit 130 and the audio recording unit 120 of the data recorder 100 illustrated in FIG. 2 is configured as illustrated in FIG. In the example shown in FIG. 10, switches S1 to S4 are provided for connecting the output signals of the amplifiers A1 to A4 to the output terminal of the amplifier A5 by the on operation. On / off control of the switches S1 to S4 is performed by the control unit 140.

The control unit 140 is configured to capture the start condition signal (start signal) of the in-car broadcast device (automatic broadcast device), the inter-crew communication device, the emergency notification device, and the wireless device from the control line of these devices, and the start is detected. A switch provided after the amplifier corresponding to the selected device is turned on. On the other hand, the audio recording unit 120 has one audio recording board 121 corresponding to the audio channel CH1. Then, the gain of the amplifier A1 corresponding to the in-car broadcast device is set to be smaller than that of the amplifier A5 (corresponding to the crew cabin sound).

  Thereby, the number of parts can be reduced. As a self-diagnosis in this case, the same operation as the diagnosis for the board 121A in the phase F1 and the phase F2 in the self-diagnosis method shown in FIG. 7 is performed. By adopting such a configuration, the number of parts of the data recorder is reduced, so that downsizing and cost reduction can be achieved.

  Further, the operation state information and the sound information may be recorded and recorded on the same recording medium. The recording media MD and MS may be different types.

<Information processing device>
FIG. 11 is a diagram illustrating a configuration example of an information processing apparatus (for example, a personal computer) applicable to reproduction of operation information and voice information recorded and recorded by the data recorder 100. In FIG. 11, an information processing apparatus 250 includes a CPU 251, a main memory (MM: RAM) 252, a hard disk (HD: including a hard disk drive (HDD)) 253, and a recording medium that are connected to each other via a bus. MD drive device 254, a plurality of drive devices 255 for recording medium MS, display control unit 256, input device interface (
I / F) 257 and a voice control unit (sound mechanism (sound chip)) 258.

The drive device 254 has a mounting portion (including a slot and a connector) for a recording medium MD on which operation information is recorded. The drive device 255 has a mounting portion (including a slot and a connector) for a recording medium MS on which audio information of each audio channel is recorded. Further, a display device (display) 259 is connected to the display control unit 256. An input device 260 is connected to the I / F 257. The input device 260 includes a keyboard (KBD) 261 and a pointing device (PD: mouse, etc.) 262. A plurality of speakers 263 are connected to the audio control unit 258.

  The HD 253 stores information recorded on the recording media MD and MS on a display device, and stores a program for reproducing audio based on audio information. The HD 253 stores various data used when executing the program. For example, the HD 253 stores screen data (image data) for generating an operation recording screen displayed on the display device 259.

  As the drive device 254 and the drive device 255, those having the same configuration can be applied as long as the recording media MD and MS are the same type of recording media. At this time, the mounting positions of the recording media MD and MS are not limited. The drive device 255 is prepared according to the number of audio channels used by the user.

  The CPU 251 functions as an operation recording screen generation device and an audio playback device by executing a program stored in the HD 253. When starting the processing, the CPU 251 first causes the display device 259 to display a data and audio file designation screen. Files recorded on the recording media MD and MS can be specified by specifying a file name or a time range. The user designates a file using the input device 260.

  When a file is specified, the CPU 254 reads a file that matches the specification from the recording media MD and MS mounted in the drive devices 254 and 255 to the MM 252. When a file name is designated, a file having the file name is read from the recording media MD and MS. On the other hand, when the time range is designated, all the files belonging to the time range are read from the recording media MD and MS. Here, since the file names of the data file and the voice file are times corresponding to the data or the voice, the data file and the voice file at the time belonging to the specified time range are read out.

  In the file designation screen, the user can designate a voice channel (voice). When the audio channel is designated, only the audio file corresponding to the designated audio channel is read from the corresponding recording medium MS. In this case, for example, the audio file name is created by the data recorder 100 in a format in which time and audio channel identification information are combined. The CPU 251 can identify the audio file by referring to the audio channel identification information included in the audio file name, and obtain a desired audio file.

When the CPU 251 reads the file into the MM 252, the CPU 251 performs operation recording screen creation processing. That is, the CPU 251 performs the following creation process when the corresponding data file and audio file are read out by designating the file name. The CPU 251 analyzes the data file, and based on the speed, distance, and contact information included in the data file, changes over time (
Create a graph showing temporal transitions).

  Further, the CPU 251 analyzes the audio file and generates a graph showing the audio signal included in the audio file along the time axis. Then, the CPU 251 uses the screen data to create an operation record screen that is displayed in a state where the created speed, distance, contact information, and voice information graphs are synchronized along the time axis. At this time, the time according to the time information is added to the graph.

  When a plurality of files are specified for data and audio files, a graph is created by connecting graphs for each information created from each file in time series. When the creation of the operation record screen is completed, the CPU 251 gives a display command for displaying the operation record screen to the display control unit 256. The display control unit 256 causes the display device 259 to display an operation record screen according to the command.

FIG. 12 is a diagram illustrating a display example of an operation record screen displayed on the display screen of the display device 259. In FIG. 12, the operation record screen shows the time transition of distance information, speed information, and contact information (here, emergency brake information as an example) based on the data file in order from the top along the time axis that proceeds from left to right. Is displayed. Further, on the lower side of the emergency brake information, in order from the top, the cabin cabin voice (the collected voice of the microphone 7 (voice channel CH5)), the crew call communication voice (voice channel CH2), the emergency call voice (voice channel CH3) ), A graph showing the audio signal of in-car broadcast (including automatic broadcast) audio (audio channel CH1) is displayed.

On the upper side of the graph, the time (time stamp) given as the file name is displayed as time information. In addition, a line that runs through the graph (perpendicular to the time axis) indicates a range (unit time: time interval) recorded in one file. In the example of FIG. 11, operation information and voice information of time intervals t1 to t6 obtained from six data and voice files are shown.

  In the example shown in FIG. 12, in the time interval t1, it can be easily recognized that the in-car broadcast indicating the departure is performed in accordance with the departure of the railway vehicle. Further, it can be recognized from the graph of the voice channel CH3 that the emergency call operation (emergency call) has been performed over the time interval t3 to t3. And it can recognize from the graph of emergency brake information that the emergency brake was applied over the time interval t4 to t5.

  Further, it can be recognized from the graph of the audio channel CH1 that the in-car broadcast according to the operation of the emergency brake has been performed. Further, it can be recognized that the communication call between crew members was performed in the time interval t5 in connection with the emergency brake operation. In addition, it is possible to recognize that the in-vehicle broadcast (microphone interrupt broadcast) explaining the circumstances of applying the emergency brake was performed in the time interval t5.

  Then, deceleration is performed as the station approaches, and it can be recognized from the graph of the speed information and the voice channel CH1 that the pre-arrival broadcast and the automatic broadcast of the arrival broadcast are performed accordingly.

  As described above, the temporal transition between the operation information and the voice information is displayed in synchronization, so that it is possible to accurately and easily recognize or estimate an event that has occurred in the vehicle during the operation of the railway vehicle. For example, it can be easily estimated that the operation of the emergency brake was performed based on the emergency notification. Further, it can be recognized that the automatic broadcasting apparatus is operating properly in accordance with the departure, emergency brake operation, deceleration, and arrival (stop) of the railway vehicle. Moreover, it can be estimated that the crew member explained the cause of the emergency brake operation to the passenger about the waveform of the in-car broadcast at the location not corresponding to the start condition of the automatic broadcast.

  A reproduction start button (not shown) is provided on the operation record screen. When the playback button is pressed, the CPU 251 performs playback processing on the audio file and provides the audio data to the audio control unit 258. The sound control unit 258 reproduces sound based on the sound data from a sound source provided in the sound control unit 258 and transmits the sound to the speaker 263. As a result, reproduced sound is output from the speaker.

At the time of audio reproduction, an indicator (in this example, an arrow symbol) 264 arranged on the time axis of the operation recording screen moves on the time axis according to the reproduction time (in this example, left to right). As a result, the user can recognize the point in time of the reproduced sound and can know the contents of the sound waveform that appears on the screen. Thus, the operation state (operation status) can be properly recognized or estimated. Here, when the audio control unit 258 can reproduce the audio of a plurality of audio channels at the same time, Can be output simultaneously (in parallel). It is also possible to prepare a voice channel selection button on the operation record screen and listen to the voice for each voice channel.

FIG. 13 shows a display example of the reverse calculation display about the recording stop distance. When specifying a file, the user specifies a file within a specified time range from the most recent record ("reverse display specification"
Can be called). In this case, the CPU 251 generates and displays an operation record screen based on a file in a range that goes back for a predetermined period from the time of recording stop as shown in FIG. In this case, as the distance information, the distance traveled in the reverse direction is displayed with the recording stop time as a reference (starting point 0).

By enabling such display designation (reverse display designation), when the data recorder 100 detects an abnormal situation of the railway vehicle and stops recording and recording, the recording and recording are performed when the cause is investigated. It is possible to easily visually check the operation state in a range that is traced back for a predetermined period after the stop of the vehicle (for example, a range that is assumed to include a portion that is considered to be an abnormal situation). Furthermore, since the distance is displayed in reverse calculation starting from the time of recording and recording stop, it is possible to easily grasp what happened at which point.

  In the above description, the drive devices 254 and 255 function as a reading unit of the present invention, the CPU 251 functions as a screen information generation unit, the CPU 251 and the audio control unit 258 function as a reproduction processing unit, and the speaker 263 as an audio output unit. Function as.

  In the example shown in FIGS. 11 to 13, an example in which only the emergency brake information is applied as the contact information is shown. It is possible to display all or part of the contact information acquired by the data recorder 100 on this operation record screen.

It is a figure which shows the structural example of the in-vehicle broadcast apparatus, the crew member communication apparatus, emergency call apparatus, radio | wireless apparatus, and automatic broadcast apparatus which were mounted in the rail vehicle. It is a figure which shows the structural example of the data recorder as an operation recording system of this invention. It is a figure which shows the structural example of the data recording board shown in FIG. It is a figure which shows the structural example of the audio | voice recording board shown in FIG. It is a figure which shows the structure (diagnosis part) which concerns on the self-diagnosis of the audio | voice recording part shown in FIG. It is a figure which shows the principle of the self-diagnosis in the structure shown in FIG. It is a time chart which shows the self-diagnosis method in the structure shown in FIG. It is a figure which shows the other structure (diagnosis part) which concerns on the self-diagnosis of the audio | voice recording part shown in FIG. It is a time chart which shows the self-diagnosis method in the structure shown in FIG. FIG. 6 is a diagram showing a configuration example when the number of audio channels is reduced as a modification of the data recorder shown in FIG. 2. It is a figure which shows the structural example of the information processing apparatus applied in order to display and reproduce | regenerate the operation information and audio | voice information which were recorded with the data recorder which concerns on this invention. It is a figure which shows the example of a display of the operation record screen displayed on a display apparatus by the information processing apparatus shown in FIG. It is a figure which shows the other example of a display of the operation record screen displayed on a display apparatus by the information processing apparatus shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Car broadcast apparatus 2 ... Inter-crew communication apparatus 3 ... Emergency call apparatus 4 ... Automatic broadcast apparatus 5 ... Wireless apparatus 7 ... Microphone 100 ... Data recorder 110 ... Data recording part (recording part)
120: Voice recording unit (recording unit)
121 ... Voice recording board (recording / playback unit)
130 ... amplification unit 140 ... control unit (operation state acquisition unit)
150 ... Power supply unit 156 ... Backup battery (backup power supply)
250: Information processing device 251: CPU
254, 255 ... Drive device

Claims (15)

An operation record system installed in a railway vehicle,
An operation state acquisition unit for acquiring the operation state of the railway vehicle;
A recording unit that records the operation state information acquired by the operation state acquisition unit together with time information in a first recording medium;
A voice input unit for inputting voice generated in the railway vehicle;
A railway vehicle operation recording system, comprising: a sound recording unit that records sound input from the sound input unit together with time information on the first recording medium or the second recording medium. 2. The railway vehicle operation recording system according to claim 1, wherein the operation state acquisition unit acquires at least one of speed information, travel distance information, and travel point information of the railway vehicle. 3. The railway vehicle operation recording system according to claim 1, wherein the operation state acquisition unit acquires at least one of information relating to opening / closing of a railcar door and emergency brake operation information. The recording unit is a voice for a call made by using an inter-crew communication device for performing a communication call between crew members mounted on the railway vehicle, and a passenger mounted on the rail vehicle makes an emergency call to the crew member. Call voice made using the emergency call device, Call voice made using a radio device for a crew member of the railway vehicle to talk to personnel on the ground equipment, In-car broadcast device mounted on the railway vehicle The operation record of the railway vehicle according to any one of claims 1 to 3, wherein at least one of an in-car broadcast sound using a sound and a sound collected by a microphone installed in the railway vehicle is recorded. system. When detecting the recording and recording stop condition, further includes a control unit for stopping the recording and recording operation by the recording unit and the recording unit after a predetermined time,
When the recording unit and the recording unit start recording and recording operations under predetermined conditions, the recording unit and the recording unit continuously perform the recording and recording operations until the recording and recording operations are stopped based on the control by the control unit. The operation record system for railway vehicles according to any one of claims 1 to 4. The operation recording system operates by receiving power from a vehicle power source,
When the power supply from the vehicle power supply is stopped, it further includes a backup power supply that supplies operation power to the operation recording system instead of the vehicle power supply,
The backup power supply supplies power for continuing recording and recording operations to the recording unit and the recording unit for at least a predetermined period after the power supply is stopped,
When the recording unit and the recording unit start recording and recording operations under a predetermined condition, the recording unit and the recording unit continuously perform the recording and recording operations until power supply from the vehicle power source and the backup power source is stopped. The operation record system of a railway vehicle according to any one of claims 1 to 5. The recording unit is
Multiple recording / playback units prepared for multiple audio channels;
The railway vehicle operation recording system according to claim 1, further comprising: a diagnosis unit that diagnoses whether each recording / reproducing unit normally performs a recording / reproducing operation. The diagnostic unit
A test sound source that outputs test sound; and
The control of causing the test voice to be recorded in one of the plurality of recording / playback units at the first timing and playing back the test voice recorded on the recording / playback unit at the second timing thereafter, A recording / playback control unit for each of a plurality of recording / playback units;
A determination unit that compares the test sound reproduced by each recording / playback unit with the test sound from the test sound source, and determines whether the two are the same or different;
A diagnostic result output unit for outputting information indicating that the recording / playback unit is abnormal when the two are different;
The railway vehicle operation recording system according to claim 7, further comprising: The diagnostic unit
A test sound source that outputs test sound; and
In the first timing, the test audio from the test sound source is recorded in the first recording / playback unit group when the plurality of recording / playback units are divided into the first and second recording / playback unit groups, Then, at the second timing, the test sound recorded in the first recording / playback unit group is played back, and the test sound from the test sound source is recorded in the second recording / playback unit group. And a recording / playback control unit for playing back the test voice recorded in the second recording / playback unit group at a third timing thereafter,
Test audio reproduced from the recording / playback units included in the first recording / playback unit group at the second timing and included in the second recording / playback unit group at the third timing A determination unit for comparing each of the test sound reproduced from the recording / playback unit and the test sound from the test sound source to determine whether or not both are the same;
The railway vehicle according to claim 7, further comprising: a diagnosis result output unit that outputs information indicating that the recording / playback unit is abnormal when a determination result that the two are different is obtained. Navigation record system. A mounting portion for the first and second recording media according to claim 1;
A reading unit that reads time information and operation state information from the first recording medium attached to the attachment unit, and reads time information and audio information from the second recording medium;
Based on the time information, operation state information, and audio information read from the reading unit, the transition of the operation state based on the operation state information and the audio waveform based on the audio information are shown along the time axis. A screen information generator for generating operation record screen information;
A display control unit for displaying an operation record screen based on the operation record screen information on a display device;
A reproduction processing unit for reproducing audio based on the audio information;
An audio output unit for outputting the audio reproduced by the reproduction processing unit,
The information processing apparatus, wherein the display control unit displays an indicator corresponding to a reproduction position of audio information by the reproduction processing unit in association with a time axis of the operation recording screen.   An automatic broadcast apparatus comprising the railway vehicle operation recording system according to claim 1.   The automatic train stop apparatus provided with the operation recording system of the rail vehicle in any one of Claims 1-9.   The automatic train control apparatus provided with the operation recording system of the railway vehicle in any one of Claims 1-9. An automatic train driving apparatus comprising the railway vehicle operation recording system according to claim 1.   The train information management apparatus provided with the operation recording system of the rail vehicle in any one of Claims 1-9.

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