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すなわち、図１の（ａ）において、連結された第１車両Ｔ１乃至第４車両Ｔ４である鉄道車両に対して、第１車両Ｔ１において、撮像装置１−１〜撮像装置１−４と、表示装置Ｈ１と、管理装置Ｋと、管理装置Ｋに接続された車両装置９と、スイッチ部Ｗ１と、を備え、撮像装置１−１〜撮像装置１−４、管理装置Ｋおよび表示装置Ｈ１はそれぞれスイッチ部Ｗ１と接続されている。 That is, in FIG. 1A, with respect to the railway vehicles that are the connected first vehicle T1 to fourth vehicle T4, in the first vehicle T1, the imaging devices 1-1 to 1-4 are displayed. The apparatus H1, the management apparatus K, the vehicle apparatus 9 connected to the management apparatus K, and the switch part W1 are provided, and the imaging apparatus 1-1 to the imaging apparatus 1-4, the management apparatus K, and the display apparatus H1 are each It is connected to the switch part W1.
同様に、第４車両Ｔ４において、撮像装置４−１〜撮像装置４−４と、表示装置Ｈ２と、スイッチ部Ｗ４とを備え、撮像装置４−１〜撮像装置４−４および表示装置Ｈ２はそれぞれスイッチ部Ｗ４と接続されている。これらの第４車両Ｔ４の撮像装置４−１〜撮像装置４−４と表示装置Ｈ２は、同様に、例えば１９２．１６８．１．０／２４のネットワークグループにて一意にＩＰアドレスが割り付けられている。 Similarly, the fourth vehicle T4 includes an imaging device 4-1 to an imaging device 4-4, a display device H2, and a switch unit W4. The imaging device 4-1 to the imaging device 4-4 and the display device H2 include each that is connected to the switch portion W4. Similarly, the image pickup device 4-1 to the image pickup device 4-4 and the display device H2 of the fourth vehicle T4 are assigned IP addresses uniquely in, for example, a network group of 192.168.1.0/24. Yes.
そのための記録方式として、イベント（アラーム）記録方式というものがある。例えば、撮像装置は、通常時は低フレームレートで撮像しておき、ドアが開閉したという情報を通知されることにより、その時のみ高フレームレートで映像記録する。この方式を用いれば、人物等の出入りがあった時の事象等の、イベントのあった時のみ映像を記録し、何も変化が無い場合には映像を記録しないという様に、限られた記録容量を効率的に使用して記録できる As a recording method therefor, there is an event (alarm) recording method. For example, the imaging equipment, the normal advance by imaging at a low frame rate, by the door is notified of the information that has been opened and closed, to the video recording at a high frame rate only at that time. Using this method, of events such as when there is out of such as a person, to record only the video of the time for which the event, nothing if the change is not as it does not record the video, was limited Can record using the recording capacity efficiently
これらステップＳ１８からステップＳ２０までの撮像装置１−３が取得した映像データを他の撮像装置１−２に送信して代わりに記録してもらう処理は、撮像装置１−２の記録予約領域が満杯になるまで継続される。図１２に示す様に、イベント通知Ｓ２１および、Ｓ２２と同様の映像データ送信処理の後、映像データおよびコマンドを受信した撮像装置１−２は、自機の記録予約領域に受信した映像データを記録し、記録予約領域の空き容量を確認し、無しまたは少ないと判断すると、空き容量が無しまたは少ないことを映像データの記録が正常に完了したことと共に撮像装置１−３に通知する（ステップＳ２３）。このときの状態が図９に示してある。この通知に基づき、撮像装置１−３は、映像データ送信先である撮像装置を先のステップ１５で決定した優先順位に従って、次に優先順位の高い撮像装置１−１に変更する（ステップＳ２４）。 In the process of transmitting the video data acquired by the imaging device 1-3 from step S18 to step S20 to the other imaging device 1-2 and recording it instead, the recording reservation area of the imaging device 1-2 is full. Continue until As shown in FIG. 12, the event notification S21 and, after the same image data transmission processing S 22, the imaging device 1-2 that has received the image data and commands, the video data received in the recording reservation area of its own Recording and checking the free space in the reserved recording area, and determining that there is no or little free space, notifies the image pickup apparatus 1-3 that the free space is free or small and that the recording of video data has been normally completed (step S23). ). The state at this time is shown in FIG. Based on this notification, the imaging device 1-3 changes the imaging device that is the video data transmission destination to the imaging device 1-1 having the next highest priority according to the priority order determined in the previous step 15 (step S24). .
再び列車内のドア２３開閉のイベントを検出またはイベント情報を受信すると（ステップＳ２５）、優先順位に基づいて、２番目に優先順位の高い撮像装置１−１に対して、取
得した映像データと映像データを記録予約領域Ａに記録させるコマンドを送信する（ステップＳ２６）。撮像装置１−１は、撮像装置１−３から映像データとコマンドを受信すると、撮像装置１−３からの映像データを自機の記録媒体に設定した記録予約領域Ａに記録し、記録後の空き容量を確認して、映像データの記録が正常に完了したことを撮像装置１−３に返信する（ステップＳ２７）。このとき、撮像装置１−１は、ドア２２の開閉等のイベント情報基づいて、自機の取得した映像データを自機の記録媒体に記録している。
Again receives the detection or event information door 23 opening and closing events in the train (step S25), and based on the priority, for the second priority high imaging device 1 1, acquired video data and video A command for recording data in the recording reservation area A is transmitted (step S26). Upon receiving the video data and the command from the imaging device 1-3, the imaging device 1-1 records the video data from the imaging device 1-3 in the recording reservation area A set in the recording medium of the own device, and after recording The free capacity is confirmed, and the fact that the recording of the video data has been normally completed is returned to the imaging device 1-3 (step S27). At this time, the imaging device 1-1 records the video data acquired by the own device on the recording medium of the own device based on event information such as opening / closing of the door 22.
これらステップＳ２５からステップＳ２７までの撮像装置１−３が取得した映像データを他の撮像装置１−１に送信して代わりに記録してもらう処理は、上述の撮像装置１−２の場合と同様に、撮像装置１−１の記録予約領域が満杯になるまで継続される。これらの動作が繰り返される中で、撮像装置１−１は、記録予約領域の空き容量を確認し、無しまたは少ないと判断すると、空き容量が無しまたは少ないことを映像データの記録が正常に完了したことと共に撮像装置１−３に通知する。このときの状態が図１０に示してある。この通知に基づき、撮像装置１−３は、映像データ送信先である撮像装置を先のステップ１５で決定した優先順位に従って、次に優先順位の高い撮像装置に変更する。 The process of transmitting the video data acquired by the imaging device 1-3 from step S25 to step S27 to the other imaging device 1-1 and recording it instead is the same as in the case of the imaging device 1-2 described above. Until the recording reservation area of the image capturing apparatus 1-1 is full. Among these operations are repeated, the imaging apparatus 1 1 checks the free capacity of the recording reservation area, when it is determined that no or fewer, recording of the video data that free space without or less was successful At the same time, the imaging apparatus 1-3 is notified. The state at this time is shown in FIG. Based on this notification, the imaging device 1-3 changes the imaging device as the video data transmission destination to the imaging device with the next highest priority according to the priority order determined in the previous step 15.
ここで、ステップＳ１５における各々の撮像装置の状態の分析と記録予定の算出方法について、図８を用いて詳細に説明する。
まず、記録媒体に記録されていた記録開始日時および記録量から、対象撮像装置の平均記録量を算出し、記録媒体の空き容量がより多く平均記録量がより少ない撮像装置から順に優先順位を設定していく。そして、各撮像装置の記憶媒体の空き容量および各撮像装置の平均記録量から記録予定を算出する。
Here, the method of analyzing the state of each imaging apparatus and calculating the recording schedule in step S15 will be described in detail with reference to FIG.
First, the average recording amount of the target imaging device is calculated from the recording start date and time and the recording amount recorded on the recording medium, and the priority order is set in order from the imaging device with the larger free space on the recording medium and the smaller average recording amount. I will do it. Then, to calculate the scheduled recording from the average recording amount of free capacity you and the imaging devices of the storage medium of the imaging devices.
（第３実施形態）
上述した実施形態においては、主に撮像装置がグルーピングに基づいて記録予定と優先順位を求めていたが、本実施形態では、管理装置Ｋが記録予定を求めて全体を管理する。すなわち、実施形態１で撮像装置が他の撮像装置に対して空き容量を確認して記録予約領域を設定し優先順位を決定する処理を、管理装置Ｋが実行する。図１を用いて以下に詳細に説明するが、構成としては上述した実施形態と同様であるため省略する。管理装置Ｋと各装置が通信する際にはスイッチ部Ｗを介して信号がやり取りするが、それぞれ最初の１度だけスイッチを介することを説明し、その後はスイッチを介することは前提としてその説明は省略する。また、ここでは、第１車両の撮像装置１−１、第２車両の撮像装置２−２、第３車両の撮像装置３−３、第４車両の撮像装置４−４（第１グループとし、本実施形態ではこのグループを例に説明する）といった様に、各車両から１台ずつそれぞれ異なる位置に設置された撮像装置の纏まりでグルーピングされたこととする。また、記録量は撮像装置１−１、撮像装置２−２、撮像装置３−３、撮像装置４−４の順に多いものとする。
(Third embodiment)
In the above-described embodiment, the imaging apparatus mainly obtains the recording schedule and the priority order based on the grouping. However, in this embodiment, the management apparatus K obtains the recording schedule and manages the whole. That is, in the first embodiment, the management apparatus K executes a process in which the imaging apparatus confirms a free capacity with respect to other imaging apparatuses, sets a recording reservation area, and determines a priority order. Although described in detail below with reference to FIG. 1, the configuration is the same as that of the above-described embodiment, and is omitted. When the management apparatus K communicates with each apparatus, signals are exchanged via the switch unit W. However, it is explained that each time the switch is passed through the switch once, and after that, the explanation is based on the premise that the switch is passed through the switch. Omitted. Further, here, the imaging device 1-1 of the first vehicle, the imaging device 2-2 of the second vehicle, the imaging device 3-3 of the third vehicle, the imaging device 4-4 of the fourth vehicle (the first group, In the present embodiment, this group will be described as an example), and it is assumed that grouping is performed by a group of imaging devices installed one by one from each vehicle. The recording amount shall often in the order of the image capture device 1-1, the imaging device 2-2, an imaging device 3 -3, an imaging device 4-4.
具体的には、管理装置Ｋは、各撮像装置の記録状態を監視する中で、撮像装置１−１の空き容量が少なくなってきたら、他の撮像装置の記録状況と平均使用量に基づいて記録予定を求め、優先順位を決定する。このとき、優先順位は、記録量の少ない撮像装置４−４、撮像装置３−３、撮像装置２−２の順となる。また、管理装置Ｋは、撮像装置４−４、撮像装置３−３、撮像装置２−２に対して、記録予約領域を設定する様にコマンドを送信し、撮像装置４−４、撮像装置３−３、撮像装置２−２はコマンドに従って自機の記録領域に記録予約領域を設定する。そして、撮像装置１−１の空き容量に余裕がなくなったら、管理装置Ｋは撮像装置１−１に対して、映像データを優先順位の１番高い撮像装置４−４に送信する様にコマンドを送信する。撮像装置１−１は、コマンドに従って撮像装置４−４に映像データを送信し、撮像装置４−４は自機の記録予約領域に受信した撮像装置１−１の映像データを記録する。 Specifically, the management device K monitors the recording state of each imaging device, and if the free space of the imaging device 1-1 decreases, the management device K is based on the recording status and average usage of other imaging devices. Find the record schedule and determine the priority. At this time, priority, recording a small amount of the imaging device 4-4, the imaging device 3-3, the order of the imaging device 2-2. Further, the management apparatus K includes an imaging device 4-4, the imaging device 3-3, to the imaging apparatus 2 -2, sends a command so as to set a recording reservation area, the imaging device 4-4, an imaging device 3 -3, an imaging apparatus 2 -2 sets the recording reservation area in the recording area of its own in accordance with the command. When there is no more free space in the imaging device 1-1, the management device K issues a command to the imaging device 1-1 so as to transmit the video data to the imaging device 4-4 having the highest priority. Send. The imaging device 1-1 transmits video data to the imaging device 4-4 according to the command, and the imaging device 4-4 records the received video data of the imaging device 1-1 in the recording reservation area of the own device.
具体的には、さらに撮像装置２−２の空き容量が少なくなってきたら、さらに他の撮像装置の記録状況と平均使用量に基づいて記録予定を求める。また、管理装置Ｋは、撮像装置３−３に対して、撮像装置１−１用の記録予約領域を平均使用量などに基づいて削除または縮小して撮像装置２−２用の記録予約領域を設定する様にコマンドを送信し、撮像装置３−３はコマンドに従って自機の記録領域に記録予約領域を設定し直す。そして、撮像装置２−２の空き容量に余裕がなくなったら、管理装置Ｋは撮像装置２−２に対して、映像データを撮像装置３−３に送信する様にコマンドを送信する。撮像装置２−２は、コマンドに従って撮像装置３−３に映像データを送信し、撮像装置３−３は自機の記録予約領域に受信した撮像装置２−２の映像データを記録する。このとき、撮像装置４−４は撮像装置１−１の映像データを代替して記録しているため、撮像装置２−２の映像データを代替して記録する対象とはしないが、グループ内の撮像装置の数が多くて他に代替して記録可能な撮像装置がある場合には、記録予約領域を設定し、優先順位を再度決定する。 Specifically, when the free space of the imaging device 2-2 further decreases, a recording schedule is obtained based on the recording status and average usage of another imaging device. In addition, the management apparatus K deletes or reduces the recording reservation area for the imaging apparatus 1-1 based on the average usage amount or the like with respect to the imaging apparatus 3-3, and sets the recording reservation area for the imaging apparatus 2-2. The command is transmitted so as to set, and the imaging device 3-3 resets the recording reservation area in its own recording area in accordance with the command. Then, when no more available to the free space of the image pickup device 2-2, the management device K is the imaging device 2 - to two, the video data capturing apparatus 3 - sends a command so as to send to 3. The imaging device 2 - 2, the image pickup apparatus 3 according to the command - to send the video data to 3, the imaging device 3 - 3 imaging apparatus 2 receives the recording reservation area of its own - recording the video data 2. At this time, since the imaging device 4-4 records the video data of the imaging device 1-1 as a substitute, the imaging device 4-4 does not record the video data of the imaging device 2-2 as a substitute. In the case where there are a large number of imaging devices and there are other imaging devices that can be recorded instead, a recording reservation area is set and the priority order is determined again .
Claims (13)
前記映像信号に所定の映像処理を施し映像データを出力する映像処理部と、
映像データを記録する記録部と、
他の複数の撮像装置と通信する通信部と、
各部を制御する制御部と、を備え、
前記制御部は、前記記録部の空き容量に余裕がなくなると、他の複数の撮像装置の記録部の空き容量を確認し、前記他の複数の撮像装置の記録部の現在までの平均記録量と現在の空き容量に基づいて記録予約領域を算出し、前記記録予約領域のサイズが大きい順に前記他の複数の撮像装置に対して優先順位を設定し、前記他の複数の撮像装置の中で最も優先順位の高い前記他の撮像装置の記録部の空き容量の一部に自機の映像データを記録するための前記記録予約領域を設定し、前記他の撮像装置に対して映像データを送信することを特徴とする撮像装置。 An image sensor that images a subject and outputs a video signal;
A video processing unit that performs predetermined video processing on the video signal and outputs video data;
A recording unit for recording video data;
A communication unit that communicates with other imaging devices ;
A control unit for controlling each unit,
When there is no more free space in the recording unit, the control unit checks the free space in the recording units of the other plurality of imaging devices, and the average recording amount of the recording units of the other imaging devices up to the present And calculating a recording reservation area based on the current free space, setting priorities for the other imaging devices in descending order of the size of the recording reservation area, and among the other imaging devices. The recording reservation area for recording the video data of the own device is set in a part of the free space of the recording unit of the other imaging device having the highest priority , and the video data is transmitted to the other imaging device. An imaging apparatus characterized by:
前記複数の撮像装置の各記録部の空き容量を監視し、制御する管理装置と、がネットワークを介して接続され、
前記管理装置は、記録部を備える複数の撮像装置の記録部の記録状態を監視し、記録部の空き容量に余裕がない前記撮像装置があると、他の複数の撮像装置の記録部の空き容量を確認し、前記他の複数の撮像装置の記録部の現在までの平均記録量と現在の空き容量に基づいて記録予約領域を算出し、前記記録予約領域のサイズが大きい順に前記他の複数の撮像装置に対して優先順位を設定し、前記他の複数の撮像装置の中で最も優先順位の高い前記他の撮像装置の記録部の空き容量の一部に前記記録部の空き容量に余裕がない撮像装置の映像データを記録するための前記記録予約領域を設定し、前記記録部の空き容量に余裕がない撮像装置が映像データを前記最も優先順位の高い他の撮像装置に対して送信させるように制御することを特徴とする映像監視システム。 An image sensor that images a subject and outputs a video signal, a video processing unit that performs predetermined video processing on the video signal and outputs video data, a recording unit that records video data, and a communication that communicates with an external device A plurality of imaging devices, and a control unit that controls each unit;
A management device that monitors and controls the free capacity of each recording unit of the plurality of imaging devices is connected via a network,
The management device monitors a recording state of a recording unit of a plurality of imaging devices provided with a recording unit, and if there is the imaging device in which there is not enough free space in the recording unit, the recording unit of other imaging devices Confirm the capacity, calculate the recording reservation area based on the current recording capacity and the current free capacity of the recording units of the other imaging devices, and calculate the other recording areas in descending order of the size of the recording reservation area. Priorities are set for the other imaging devices, and a part of the free space of the recording unit of the other imaging device having the highest priority among the plurality of other imaging devices has a margin in the free space of the recording unit. The recording reservation area for recording the video data of the imaging device having no recording is set, and the imaging device having no free space in the recording unit transmits the video data to the other imaging device with the highest priority. and wherein the controller controls so as to That the video surveillance system.
前記管理装置は、列車のいずれかの車両に備えられ、The management device is provided in any vehicle of a train,
前記管理装置は、車両ごとに前記複数の撮像装置をグループ分けすることを特徴とする請求項１１に記載の映像監視システム。The video monitoring system according to claim 11, wherein the management device groups the plurality of imaging devices for each vehicle.
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| US9794524B2 (en) | 2013-01-10 | 2017-10-17 | Mitsubishi Electric Corporation | In-vehicle monitoring system and in-vehicle monitoring method |
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