JP2012151623A - Radio relay device having supervision function for other radio relay device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a technology capable of confirming in a multi-hop data relay that information transmitted from an information center is displayed at a local device locally connected to a relay device, without dispatching a maintenance person.SOLUTION: If a radio relay device 1 receives relay data including an emergency broadcast distributed from an information center 4, the radio relay device 1 relays the relay data to a neighbor radio relay device and then determines if the relay data is for a local device connected to the neighbor radio relay device (hereinafter referred as neighbor local device) or not. Then, if the relay data is for the neighbor local device, the radio relay device 1 refers to a local device control content table 1060, controls a local device connected to own radio relay device according to the data type for the neighbor local device contained in the relay data, and transmits local data obtained from the local device to the information center 4.

Description

  The present invention relates to a radio relay apparatus constituting a radio relay network that relays data in a multi-hop manner between a plurality of radio relay apparatuses.

  Relay device and communication for relaying data between long-distance communication devices by performing multi-stage relaying (multi-hop type) of data using a wireless communication method such as a wireless LAN (Local Area Network) that has a relatively short reach of radio waves A technique related to the method is known (for example, Patent Document 1).

  A conventional multi-hop relay device is a destination communication device (hereinafter referred to as a local device) in which relay data from a source communication device or a previous relay device is locally connected to the next relay device or relay device. ), And it was not possible to confirm whether or not the local device is actually operating.

  As a technique for solving this problem, a technique for remotely maintaining an emergency call device installed in a remote place is known (for example, Patent Document 2). In the technology of Patent Document 2, when there is an abnormality in the emergency call device, the device is notified to the periphery of the device using a display device connected to the device.

JP 2005-191922 A JP-A-10-162279

  However, since the technology of Patent Document 2 reports an abnormality using a display device connected to its own device, the maintenance person must make an emergency call to confirm that the device installed at a remote location is reporting an abnormality. I had to go to the place where the device was installed.

  The present invention has been made in view of the above problems, and an object of the present invention is to display information transmitted from an information center by a local device locally connected to a relay device in multi-hop data relay. This is to provide a technology that can confirm that the maintenance person does not ask.

  In order to solve the above-described problem, the present invention is a wireless relay device that constitutes a wireless relay network that relays data in a multi-hop manner between a plurality of wireless relay devices, and is received by wireless communication from another wireless relay device Wireless relay means for transmitting data to the other wireless relay apparatus and another wireless relay apparatus by wireless communication and relaying the data, and one or more local devices locally connected to the own wireless relay apparatus, wired or wirelessly Local communication means for sending and receiving, local equipment control means for controlling the local equipment, destination information extraction means for extracting a destination of data received from another wireless relay device, and the extracted destination is adjacent to the own wireless relay device An adjacent local device address determining means for determining whether or not the adjacent local device is connected to another wireless relay device, and the adjacent local device Data type determination means for determining whether the data addressed to the device is a predetermined data type or information relating to the transmission source, and the adjacent local device and the local wireless relay device and the locally connected local device, Received from the local device control content storage means for storing the content for controlling the local device connected to the own wireless relay device for the data type determined by the data type determination means, and received from the local device connected to the own wireless relay device Local data relay means for relaying the local data to another wireless relay device by wireless communication, and the data type determining means is information related to a predetermined data type or transmission source for data addressed to the adjacent local device If it is determined that the local data relay means refers to the local device control content storage means, A local device connected to the relay device is controlled, and the local data relay means transmits data from the local device connected to the own wireless relay device to the adjacent local device to which the wireless relay device relays data. As a destination, and relay to another wireless relay device in the next stage.

  According to the present invention, when various data are relayed to other relay devices in a multi-hop manner with other relay devices, and a predetermined operation is instructed from a transmission source to a local device connected to the relay device in an emergency. Since the relay device in the preceding stage of the relay device automatically detects the operation of the local device and notifies the transmission source of the predetermined operation, the maintenance person determines whether or not the intended operation of the transmission source is realized. It can be confirmed even if you don't hesitate.

1 is an overall configuration diagram of a wireless relay system according to an embodiment of the present invention. It is a functional block block diagram of a radio relay apparatus. It is the figure which represented typically the transmission destination table memorize | stored in the transmission destination memory | storage part. It is the figure which represented typically the local apparatus control content table memorize | stored in the local apparatus control content storage part. 4 is an operation flowchart of the wireless relay device 1. It is an operation | movement sequence diagram when the relay data which instruct | indicates the broadcast of emergency information to the local apparatus (speaker) is sent from the information center.

  Hereinafter, as an embodiment of the present invention, data is transmitted in a multi-hop manner between a data center and various data input / output devices such as voice data and sensor data distributed over a wide range via a plurality of wireless relay devices. An example of a relaying wireless relay network will be described in detail with reference to the drawings.

  FIG. 1 is an overall configuration diagram of a wireless relay system according to an embodiment of the present invention.

  Reference numeral 1 denotes a wireless relay device according to the present invention (hereinafter also abbreviated as the present device), and this device 1 wirelessly relays in n units to constitute a multi-hop wireless relay network.

  Each of the wireless relay devices 1 is distributed at an interval equal to or shorter than the reach of a radio wave (for example, 100 m) with respect to an adjacent wireless relay device, and data (hereinafter referred to as a relay) between adjacent wireless relay devices. Data).

  Reference numeral 2 denotes various local devices locally connected to the wireless relay device 1. The local devices include a sound collecting microphone 2-1a, a monitor camera 2-1b, a speaker 2-2a, a display device 2-2b, and the like. is there.

  Reference numeral 4 denotes an information center that distributes or collects various data, and distributes or collects emergency information.

  The information center 4 instructs the operations of the various local devices 2 and sends the relay data including the operations of the predetermined local devices 2 to the wireless relay device 1. When the relay data is received from the wireless relay device 1, the reception result is stored.

  For example, it is assumed that relay data instructing emergency information broadcasting (for example, tsunami generation) is transmitted from the information center 4 to the local device (speaker) 2-2a connected to the wireless relay device 1-2. Then, the wireless relay device 1 transmits the relay data via a plurality of wireless relay devices in the direction of Center to End (downward). If the wireless relay device 1-1 that has received the relay data determines that the relay data is addressed to the speaker 2-2a, the relay data is relayed to the wireless relay device 1-2, and the wireless relay device 1-2 that receives the relay data receives the relay data. The speaker 2-2a is activated to broadcast emergency information.

  At this time, the wireless relay device 1-1 transmits the relay data, activates the local device (sound collecting microphone) 2-1a connected to the own device, and records the voice transmitted by the local device (speaker) 2-2a. The recorded voice data is sent to the information center 4 as relay data.

  Here, when the relay data sent from the information center 4 is broadcast of emergency information to the display device 2-2b, the wireless relay device 1-1 activates the local device (monitor camera) 2-1b. Then, the monitor camera 2-1b is imaged in the direction of the display device 2-2b.

  FIG. 2 is a functional block configuration diagram of the wireless relay device 1.

  The other wireless relay device communication unit 101 performs wireless communication with another adjacent wireless relay device.

  The data relay control unit 102 performs overall relay data control in conjunction with the other wireless relay device communication unit 101. When the data relay control unit 102 receives the relay data from the other wireless relay device communication unit 101, the data relay control unit 102 stores the received relay data in the relay data temporary storage unit 103.

  Further, the data relay control unit 102 relays the relay data to the adjacent lower radio relay device 1 via the other radio relay device communication unit 101 in response to an instruction from the transmission destination determination unit 104 or to the local connection control unit 109. Relay to the adjacent radio relay apparatus 1 via the relay or other radio relay apparatus communication unit 101.

  Further, when the data relay control unit 102 receives the relay data from the relay data generation / transmission unit 111, the data relay control unit 102 relays the data to the adjacent upper radio relay device 1 via the other radio relay device communication unit 101.

  The relay data temporary storage unit 103 temporarily stores the received relay data.

  The transmission destination determination unit 104 determines a relay destination by referring to the transmission destination table of the transmission destination storage unit 105 when the relay data is temporarily stored in the relay data temporary storage unit 103, and the data relay control unit according to the determination result 102 is instructed to the relay destination of the relay data.

  The transmission destination storage unit 105 stores a transmission destination table 1050.

  FIG. 3 is a diagram schematically showing the transmission destination table 1050 stored in the transmission destination storage unit 105.

  Next, a specific operation of the transmission destination determination unit 104 will be described with reference to the transmission destination table 1050 in FIG.

  As shown in the figure, the transmission destination table 1050 includes a transmission destination field 1051 that is the ID of the transmission destination local device 2 included in the header information of the relay data, and a relay destination field 1052 that is the address of the wireless relay device 2. Consists of

  When the relay data is temporarily stored, the transmission destination determination unit 104 extracts the transmission destination and searches for an ID that matches the transmission destination field 1051 of the transmission destination table. When a matching ID is detected, the transmission destination determination unit 104 refers to the corresponding relay destination field 1052 and instructs the data relay control unit 102 to relay to the relay destination. In addition, the transmission destination determination unit 104 is connected to the wireless relay device 1 adjacent to the local device control content determination unit 107 when the matching ID is addressed to the local device 2 connected to the adjacent wireless relay device 1. A command for controlling the local device 2 (hereinafter referred to as data type) is passed.

  The local device control content storage unit 106 stores a local device control content table 1060.

  When the data type is passed, the local device control content determination unit 107 refers to the local device control content storage table 107 to determine the local device control content, and determines the local device control content to the monitor start instruction unit 108 according to the determination result. Specify the control details.

  FIG. 4 is a diagram schematically showing a local device control content table 1060 stored in the local device control content storage unit 106.

  Next, a specific operation of the transmission destination determination unit 106 will be described with reference to the local device control content table 1060 in FIG.

  As illustrated, the transmission destination table 1060 includes a data type field 1061 included in the data type, a local device field 1062 connected to the own wireless relay device, and a local device connected to the own wireless relay device. Is composed of a control content field 1063.

  The local device control content determination unit 107 extracts the data type of the data type, and searches for a local device that matches the field 1062 of the local device to be controlled in the local device control content table.

  If there is a matching local device, the local device control content determination unit 107 refers to the corresponding local device control content field 1063 and instructs the monitor start instruction unit 108 about the control content to the local device. In response to an instruction from the local device control content determination unit 107, the monitor start instruction unit 108 instructs the local device 2 connected to the own wireless relay device to start monitoring such as sound collection or imaging.

  The local device control unit 109 controls the local device connected to the own wireless relay device in accordance with an instruction from the monitor start instruction unit 108.

  The local data receiving unit 110 receives local data from a local device connected to the own wireless relay device.

  The relay data generation / transmission unit 111 generates relay data addressed to the information center 4 based on the received local data, and transmits it to the data relay control unit 102.

  FIG. 5 is an operation flowchart of the wireless relay device 1. Hereinafter, an operation flow of the apparatus 1 will be described.

  This flow is executed every time the device 1 receives relay data from another wireless relay device 1 to which the other wireless relay device communication unit 101 is adjacent (S401).

  When the relay data is received (S401, YES), the data relay control unit 102 stores the received relay data in the relay data temporary storage unit 103 (S402). The transmission destination determination unit 104 extracts a transmission destination based on the stored relay data and refers to the transmission destination table 1050 (S403).

  The destination is determined from the referenced destination table, and it is determined whether the destination is addressed to the adjacent local device, other local device, the local device, or the information center (S404).

  When the transmission destination is addressed to the adjacent local device (S404, addressed to the adjacent local device), the relay data is transmitted to the lower wireless relay device (S405).

  The local device control content determination unit 107 extracts the data type included in the relay data, refers to the local device control content table 1060 (S406), and if there is a matching data type (S407, Yes), the data type is set as the data type. The corresponding control target local device control content is selected and instructed to the monitor start instruction unit 108 (S408).

  The local device control unit 109 controls the local device 2 connected to the own wireless relay device in accordance with an instruction from the monitor start instruction unit 108 (S409). The local data receiving unit 109 receives local data from the local device 2 connected to the own wireless relay device 1 and transmits it to the relay data generating / transmitting unit 111 (S410).

  The relay data generation / transmission unit 111 generates relay data addressed to the information center 4 based on the received local data (S411), and transmits it to the data relay control unit 102.

  The data relay control unit 102 that has received the relay data transmits the relay data to the information center 4 through the other wireless relay device communication unit 101 (S412), and ends this flow. If there is no matching data type (S407, No), this flow ends without doing anything.

  When the transmission destination is addressed to another local device (S404, addressed to another local device), the received relay data is relayed to the lower wireless relay device (S413).

  When the transmission destination is addressed to the local device (S404, addressed to the local device), the local device 2 connected to the local wireless relay device is controlled according to the data type included in the relay data (S414). .

  When the transmission destination is addressed to the information center (S404, addressed to the information center), the received relay data is transmitted to the upper wireless relay device (S415).

  FIG. 6 is an operation sequence diagram when relay data instructing broadcast of emergency information is sent from the center device 4 to the local device (speaker) 2-2a.

  When relay data including a voice broadcast instruction for emergency broadcasting is transmitted from the center apparatus 4 to the radio relay apparatus 1-2, and the radio relay apparatus 1-1 receives the relay data via the plurality of radio relay apparatuses 1. (S501) The received relay data is temporarily stored (S502). Then, it is determined whether or not the received relay data is addressed to an adjacent local device, and if the transmission destination is determined to be addressed to an adjacent local device (S503), the stored relay data is relayed to the wireless relay device 1-2 (S504). ).

  The wireless relay device 1-2 that has received the relay data performs voice output control of the connected local device 2-2a (speaker) according to the data type included in the relay data (S505). As a result, the local device 2-2a (speaker) starts emergency broadcasting (S509).

  In step 504, when relay data is relayed to the wireless relay device 1-2, the wireless relay device 1-1 extracts the data type and refers to the local device to be controlled corresponding to the data type from the local device control content table 1060. Then, the local device to be controlled corresponding to the data type is selected, and the local device control content corresponding to the data type is transmitted to the monitor start instruction unit 108 (S506). The monitor start instruction unit 108 controls the local device to be controlled in conjunction with the local device control unit 109 (S507). The local device 2-1a (sound collecting microphone) instructed to start monitoring starts collecting sound (S508).

  When the emergency broadcast sound (S510) broadcast from the local device 2-2a is collected by the local device 2-1a (microphone), it is transmitted to the wireless relay device 1-1 as local data (S511). The wireless relay device 1-1 that has received the local data generates relay data addressed to the information center 4 (S512), and transmits the relay data to the upper wireless relay device (S513).

  The embodiments of the present invention have been described above.

  According to the present invention, when the wireless relay device 1 receives relay data including an emergency broadcast distributed from the information center 4, the wireless relay device 1 relays the relay data to the adjacent wireless relay device and connects to the adjacent wireless relay device. It is determined whether the relay data is addressed. If the relay data is addressed to a local device connected to the adjacent wireless relay device, the local control content table 1060 is referred to, and the data type corresponding to the data addressed to the local device connected to the adjacent wireless relay device is included in the relay data. To control the local device connected to its own wireless relay device.

  When the local device connected to the adjacent wireless relay device displays the emergency broadcast, the local device connected to the own wireless relay device acquires local data including the operation displaying the emergency broadcast, and relays based on the local data Data is generated and transmitted to the information center 4 via another wireless relay device.

  Therefore, according to the present invention, when the information center 4 starts emergency broadcasting, the emergency data displayed on the wireless relay device 1 adjacent to the wireless relay device connected to the local device to which the emergency data is transmitted is relayed. Since it is automatically transmitted as data, it is not necessary for the maintenance person to visit the site to check whether or not the emergency broadcast is displayed.

DESCRIPTION OF SYMBOLS 1 ... Wireless relay apparatus 2 ... Various local devices 4 ... Information center 101 ... Other wireless relay apparatus communication part 102 ... Data relay control part 103 ... Relay data temporary storage part 104 ... Transmission destination determination unit 105 ... transmission destination storage unit 106 ... local device control content storage unit 107 ... local device control content determination unit 108 ... monitor start instruction unit 109 ... local device control unit 110 ... Local data receiver 111 ... Relay data generator / transmitter

Claims (1)

A wireless relay device constituting a wireless relay network that relays data in a multi-hop manner between a plurality of wireless relay devices,
Wireless relay means for relaying data by transmitting data received from another wireless relay device by wireless communication to another wireless relay device different from the other wireless relay device;
Local communication means for exchanging data by wire or wireless with one or more local devices locally connected to the own wireless relay device;
Local device control means for controlling the local device;
Destination information extraction means for extracting a destination of data received from another wireless relay device;
Adjacent local device address determination means for determining whether the extracted destination is an adjacent local device connected to another wireless relay device adjacent to the own wireless relay device;
Data type determination means for determining whether the data addressed to the adjacent local device is information relating to a predetermined data type or transmission source;
Stores the contents for controlling the local device connected to the local wireless relay device for the data type determined by the data type determining means in cooperation with the adjacent local device, the local wireless relay device and the locally connected local device Local device control content storage means,
Local data relay means for relaying local data received from a local device connected to the own wireless relay device to another wireless relay device by wireless communication,
When the data type determination means determines that the data addressed to the adjacent local device is information related to a predetermined data type or transmission source,
The local data relay unit controls the local device connected to the own radio relay device with reference to the local device control content storage unit, and the local data relay unit receives from the local device connected to the own radio relay device. A wireless relay device having a monitoring function of another wireless relay device, wherein the wireless relay device relays the data to the other wireless relay device of the next stage using the transmission source of the data addressed to the adjacent local device relayed by the wireless relay means as a destination.

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