JP6234848B2 - Wireless communication system, wireless communication device, and wireless device - Google Patents

Description

  The present invention relates to a wireless communication system, a wireless communication apparatus, and a wireless device, and can be applied to, for example, a wireless multi-hop network.

  An example of a wireless multi-hop network is a sensor network.

  In a conventional sensor network, the data collection device is cabled to a first wireless device (hereinafter referred to as a wireless master device), and the sensor device is cabled to a second wireless device (hereinafter referred to as a wireless slave device). The data collection device collects and manages measurement data such as power consumption, temperature, and humidity measured by the sensor device via a wireless link (including multi-hop link) between the wireless slave unit and the wireless master unit. (Patent Document 1). In such a conventional system, the wireless master unit analyzes the identifier of the sensor device described in the data read request frame given from the data collection device (hereinafter, this identifier is referred to as a station number), and The data read request frame is transmitted only to the wireless slave device to which the sensor device to which the is assigned is connected. The wireless slave device gives the received data read request frame to the sensor device connected to the wireless slave device, and the sensor device gives the data read response frame including the measurement data to the wireless slave device and transmits it to the wireless master device ( Reply).

  Here, the wireless master device and the wireless slave device perform communication on the wireless multi-hop network using a channel (for example, a frequency band) set in itself. If the channel set for itself is the same as that of the wireless master device, the wireless slave device participates in the network according to a procedure defined by, for example, ZigBee (registered trademark) IP.

  Conventionally, in order for the wireless master device to identify the wireless slave device corresponding to the station number assigned to the sensor device, the system administrator uses an identifier in the network of the wireless slave device (hereinafter, this identifier is referred to as an address). A correspondence table (hereinafter referred to as a station number list) that associates station numbers of sensor devices connected to the wireless slave unit is created and registered in the wireless master unit using a maintenance terminal. For example, according to the station number list, the wireless master device transmits a data read request frame addressed to the station number 01 to the wireless slave device whose address is wxyz, and transmits a data read request frame addressed to the station number 02 to the wireless slave device whose address is opqr. .

  Patent Document 2 describes a technique for assigning a station number from the wireless master device side to a measuring device connected to the wireless slave device.

JP 2009-294721 A JP 2008-227466 A

  However, since the station number list grows in proportion to the number of sensor devices, the creation of the station number list in a large-scale network has been a very troublesome work for the system administrator. In addition, when the system administrator performs the linking operation between the station number of the sensor device and the address of the wireless slave device, there is a possibility that an error may occur in linking the station number of the sensor device and the address of the wireless slave device in a large-scale network. high.

  The technique described in Patent Document 2 is a technique based on the premise that the station number of the sensor device and the address of the wireless slave unit are already associated with each other. Therefore, it will be influenced by the above-mentioned problem. For example, if the station number of the sensor device to be set by the wireless master unit is not correctly associated with the address of the connected wireless slave device, it is incorrect for the sensor device to be set or another sensor device. Station number is set. In order to avoid such inconvenience, the system administrator must carefully create the station number list and check whether it has been created correctly. Will be broken.

  Therefore, a wireless communication system, a wireless communication device, and a wireless communication device that can easily and accurately create and acquire a correspondence relationship between an address that is an identifier of a wireless device and a station number that is an identifier of a data processing device connected to the wireless device. A machine is required.

  In the first aspect of the present invention, the first data processing device connected to the first wireless device transmits the second data to the second data processing device connected to the second wireless device. A station number, which is an identifier of the processing device, is inserted and given to the first wireless device. The first wireless device becomes a transmission destination of transmission data by referring to the built-in station number / address correspondence information. In a wireless communication system that obtains an address of the second wireless device and transmits transmission data toward the second wireless device, (0) To hold the station number / address correspondence information in the first wireless device (1) the first radio unit (1-1) provisional correspondence information acquisition means for acquiring provisional station number / address correspondence information including only a station number without including an address; (1-2) The temporary station number / address correspondence information acquired by the provisional correspondence information acquisition means Temporary correspondence information transmitting means for transmitting to the second radio, and (1-3) when the station number of the second data processing apparatus connected is notified from the second radio Station number corresponding address adding means for adding the address of the second radio device that has been notified as an address corresponding to the notified station number in the station number / address correspondence information of (2) the second radio device Are described in (2-1) provisional correspondence information receiving means for receiving provisional station number / address correspondence information transmitted by the first radio, and (2-2) received provisional station number / address correspondence information. Station number acquisition transmitting means for performing station number confirmation transmission as to whether the station number is assigned to the connected second data processing apparatus, using (2-3) station number confirmation transmission Confirm accordingly When the reply is sent from the second data processing device, the station number of the confirmation transmission is recognized as the station number assigned to the second data processing device to which the connection is made, and the first wireless device is notified of that. (3) The second data processing device confirms whether the station number is assigned to the own device in response to the station number confirmation transmission, and is assigned. In the case of a station number, a station number confirmation response means for sending a confirmation affirmative reply is provided.

  According to a second aspect of the present invention, the first data processing device connected to the first wireless device transmits the second data to the second data processing device connected to the second wireless device. A station number, which is an identifier of the processing device, is inserted and given to the first wireless device. The first wireless device becomes a transmission destination of transmission data by referring to the built-in station number / address correspondence information. Wireless communication having a set of the first wireless device and the first data processing device in a wireless communication system that obtains an address of the second wireless device and transmits transmission data to the second wireless device In the device, (0) In order to cause the first radio to hold the station number / address correspondence information, (1) the first radio includes only the station number without including (1-1) the address. Get temporary correspondence information to obtain temporary station number / address correspondence information (1-2) provisional correspondence information transmitting means for transmitting provisional station number / address correspondence information acquired by the provisional correspondence information acquisition means to the second radio, and (1-3) the second When the station number of the connected second data processing device is notified from the wireless device, the second wireless device that has been notified as the address corresponding to the notified station number in the temporary station number / address correspondence information A station number corresponding address adding means for adding a machine address.

  According to a third aspect of the present invention, the first data processing device connected to the first wireless device transmits the second data to the second data processing device connected to the second wireless device. A station number, which is an identifier of the processing device, is inserted and given to the first wireless device. The first wireless device becomes a transmission destination of transmission data by referring to the built-in station number / address correspondence information. In a radio communication system that obtains an address of the second radio device and transmits transmission data toward the second radio device, in the radio device to which the first radio device corresponds, (0) the station number / address (1) provisional correspondence information acquisition means for obtaining provisional station number / address correspondence information including only a station number without including an address, and (2) the provisional correspondence information acquisition means for obtaining correspondence information by itself. The temporary station number / address correspondence information Temporary correspondence information transmitting means for transmitting to the second wireless device; and (3) a temporary station number / address when the second wireless device is notified of the station number of the connected second data processing device. A station number corresponding address adding means for adding the address of the second wireless device that has been notified as an address corresponding to the notified station number in the correspondence information is provided.

  According to a fourth aspect of the present invention, the first data processing device connected to the first wireless device transmits the second data to the second data processing device connected to the second wireless device. A station number, which is an identifier of the processing device, is inserted and given to the first wireless device. The first wireless device becomes a transmission destination of transmission data by referring to the built-in station number / address correspondence information. Wireless communication having a set of the second wireless device and the second data processing device in a wireless communication system that obtains an address of the second wireless device and transmits transmission data toward the second wireless device In the device, (0) in order to hold the station number / address correspondence information in the first radio unit, (1) the second radio unit (1-1) transmitted by the first radio unit Temporary correspondence information receiving means for receiving temporary station number / address correspondence information; 1-2) The station number described in the received temporary station number / address correspondence information is used as the destination, and the station number confirmation transmission is performed to determine whether the station number is assigned to the connected second data processing apparatus. Station number acquisition transmission means, and (1-3) After the station number confirmation transmission, when there is a confirmation affirmative response from the second data processing device, the second data of the connection destination is the station number of confirmation transmission A station number recognizing / transmitting means for recognizing that the station number is assigned to the processing apparatus and notifying the first radio device to that effect, and (2) the second data processing apparatus transmits a station number confirmation transmission In response to this, a station number confirmation response means is provided for confirming whether the station number is assigned to the own apparatus, and in the case of the assigned station number, a confirmation affirmative reply is provided.

  According to a fifth aspect of the present invention, the first data processing device connected to the first wireless device transmits the second data to the transmission data to the second data processing device connected to the second wireless device. A station number, which is an identifier of the processing device, is inserted and given to the first wireless device. The first wireless device becomes a transmission destination of transmission data by referring to the built-in station number / address correspondence information. In a radio communication system that obtains an address of the second radio device and transmits transmission data toward the second radio device, in the radio device to which the second radio device corresponds, (0) the station number / address In order to hold the correspondence information in the first wireless device, (1) temporary correspondence information receiving means for receiving temporary station number / address correspondence information transmitted by the first wireless device, and (2) the received temporary information The station number described in the station number / address correspondence information And a station number acquisition transmitting means for performing station number confirmation transmission as to whether the station number is assigned to the connected second data processing apparatus, and (3) a confirmation affirmative reply corresponding to the station number confirmation transmission after the station number confirmation transmission Is received from the second data processing apparatus, the station number of the confirmation transmission is recognized as the station number assigned to the second data processing apparatus to which it is connected, and the first radio apparatus is notified accordingly. And a receiving station number recognition / transmission means.

  According to the present invention, station number / address correspondence information can be created and acquired easily and accurately.

1 is a block diagram illustrating an overall configuration of a sensor network (wireless communication system) according to a first embodiment. It is explanatory drawing which shows the structure of the flame | frame exchanged between the data collection device which concerns on 1st Embodiment, and a sensor apparatus. It is explanatory drawing which shows the structure of the station number list | wrist hold | maintained at the wireless main | base station which concerns on 1st Embodiment. 1 is a block diagram illustrating a configuration of a wireless device (wireless master device or wireless slave device) according to a first embodiment. FIG. It is a functional block diagram which shows the functional structure relevant to the station number list preparation of the wireless main | base station which concerns on 1st Embodiment. It is a functional block diagram which shows the functional structure relevant to station number list preparation of the radio | wireless handset which concerns on 1st Embodiment. It is a sequence diagram which shows the automatic preparation operation | movement of the station number list | wrist in the sensor network (wireless communication system) which concerns on 1st Embodiment.

(A) First Embodiment Hereinafter, a first embodiment of a wireless communication system, a wireless communication apparatus, and a wireless device according to the present invention will be described in detail with reference to the drawings. The wireless communication system according to the first embodiment is a sensor network (sensor network system).

(A-1) Configuration of First Embodiment FIG. 1 is a block diagram showing an overall configuration of a sensor network according to the first embodiment.

  In FIG. 1, the sensor network 1 includes a data collection device 2 and a plurality of sensor devices 3, and the data collection device 2 and the sensor device 3 communicate via a wireless multi-hop network 4. The wireless multi-hop network 4 includes a wireless master device 6 connected to the data collection device 2 via a cable 5, and a cable 7 (7-1, 7-2) to the sensor device 3 (3-1, 3-2). ) Is connected to the wireless slave unit 8 (8-1, 8-2).

  The number of each apparatus which comprises the radio | wireless communications system 1 is not limited. FIG. 1 shows a case where there is one data collection device 2 and two sensor devices 3 (3-1, 3-2). The data collection device 2 and the wireless master device 6 may be associated with each other in one-to-one relationship, M-to-one relationship, 1-to-N relationship, or M-to-N relationship, but FIG. A case in which the device 2 and the wireless master device 6 have a one-to-one relationship is shown. Although the sensor device 3 and the wireless slave device 8 may be associated with each other in a one-to-one or M-to-one relationship (other correspondence relationships may be used), FIG. The case where the subunit | mobile_unit 8 has a one-to-one relationship is shown.

  The wireless master device 6 and the wireless slave device 8 correspond to the “radio device” in the name of the invention, and a set of the data collection device 2 and the wireless master device 6 or a set of the sensor device 3 and the wireless slave device 8 This corresponds to “wireless communication apparatus” in the title of the invention.

  The wireless master device 6 and the wireless slave device 8 that are in an end-to-end communication relationship may communicate directly (may communicate in one hop) as long as they are communicable. May be communicated via other wireless devices or other wireless slave devices (communication may be performed with two or more hops). The communication protocol applied to the wireless multi-hop network 4 (which may include a procedure for joining the network) is not limited. For example, a so-called ZigBee IP protocol can be applied as a communication protocol of the wireless multi-hop network 4.

  The types of the cable 5 between the data collection device 2 and the wireless master device 6 and the type of the cable 7 between the sensor device 3 and the wireless slave device 8 are not limited. For example, an RS485 cable can be applied so that various correspondences between the two devices and changes thereof can be easily handled.

  Each sensor device 3 measures a predetermined physical quantity, which will be described later, and transmits it to the data collection device 2 when measurement data is requested from the data collection device 2. The measurement timing by the sensor device 3 is not questioned. For example, the measurement may be performed periodically, or may be performed after measurement data is requested. Moreover, the measurement item (in other words, the mounted sensor) is not limited. As a sensor which sensor device 3 carries, sensors, such as electric power, temperature, humidity, gas concentration, and illuminance, can be mentioned, for example. The number of measurement items is not limited.

  The data collection device 2 collects and manages measurement data acquired by each sensor device 3. The data collection device 2 gives a data read request frame including the station number of the sensor device 3 that is to collect the measurement data to the connected wireless master device 6 and transmits it, and accordingly, the wireless master device 6 has arrived. A data read response frame is taken in. Note that the data collection device 2 may be the highest-level device related to the collection of measurement data, and there is a higher-order device than the data collection device 2, and the measurement data collected by the data collection device 2 with respect to the higher-order device. Or you may make it give the data which processed it.

  When the data read request frame is given from the data collection device 2, the wireless master device 6 accesses the built-in station number list 6T using the station number included in the data read request frame as a key, and the data read request frame Is acquired and the data read request frame is wirelessly transmitted to the wireless slave unit 8 associated with the address. The wireless master device 6 transfers a data read response frame for the data read request frame to the data collection device 2 when the corresponding wireless slave device 3 returns the data read response frame.

  The wireless slave device 8 gives the received data read request frame to the sensor device 3 connected to the wireless slave device 8, and when the data read response frame including the measurement data is given from the sensor device 3, the wireless slave device 8 To send (reply).

  FIG. 2 is an explanatory diagram showing the configuration of a data read request frame and a data read response frame.

  As shown in FIG. 2A, the data read request frame FR1 includes a station number F10 that identifies the sensor device 3 that requests measurement data, a read request code F11 that indicates that the frame is a data read request frame, It includes request data F12 representing measurement data items to be requested (power consumption, temperature, and humidity) and an error check code F13.

  As shown in FIG. 2B, the data read response frame FR2 includes a station number F20 that identifies the sensor device 3 that has transmitted the measurement data, a read response code F21 indicating that the frame is a data read response frame, It includes a response data length F22 representing the data length of measurement data inserted in the current frame, response data F23 which is measurement data inserted in the current frame, and an error check code F24.

  FIG. 3 is an explanatory diagram showing the configuration of the station number list 6T held by the wireless master device 6. As shown in FIG. The station number list 6T describes the pair information of the station number assigned to each sensor device 3 and the address of the wireless slave unit 8 connected to the sensor device 3 as many as the number of sensor devices 3. is there.

  FIG. 4 is a block diagram showing an internal configuration of the wireless master device 6 or the wireless slave device 8.

  Both the wireless master device 6 and the wireless slave device 8 realize a desired function by executing an application program in which a CPU is installed, and have the same configuration except for the application program. . Therefore, FIG. 4 shows the internal configuration without distinguishing the wireless master device 6 or the wireless slave device 8.

  In FIG. 4, a wireless device 10 (wireless master device 6 or wireless slave device 8) includes a wired interface unit (hereinafter referred to as a wired IF unit) 11, a wired / wireless data processing unit 12, and a wireless interface unit (hereinafter referred to as a wireless IF unit). 13).

  The wired IF unit 11 terminates a cable 21 (cable 5 or 7) connected to the corresponding data processing device 20 by the data collection device 2 or the sensor device 3, and the data processing device 20 provided via the cable 21. Is used to receive data transmitted to the data processing device 20 or to send data to the data processing device 20 to the cable 21.

  The wireless IF unit 13 is a network interface for connecting to a facing wireless device via a wireless line. The communication protocol of the wireless IF unit 13 (in other words, the communication protocol of the wireless multihop network 4) is not limited, but the ZigBee IP protocol can be applied as described above. When the ZigBee IP protocol is applied, the wireless IF unit 13 executes a communication protocol having a hierarchical structure as shown in FIG.

  That is, the wireless IF unit 13 includes a physical layer / MAC layer processing unit 131, a 6 Low PAN (IPv6 over Low power Wireless Area Network) processing unit 132, an IPv6 / RPL (Routing Protocol for Low power 13 processing unit). A port layer processing unit 134 and an application layer processing unit 135 are included.

  The physical layer / MAC layer processing unit 131 performs physical layer processing according to IEEE 802.15.4g and MAC layer processing according to IEEE 802.15.4e. The 6 Low PAN processing unit 132 and the IPv6 / RPL processing unit 133 perform network layer processing for realizing an IPv6 network on IEEE 802.15.4. The 6LowPAN processing unit 132 performs processing according to 6LowPAN (for example, header compression and packet division). The IPv6 / RPL processing unit 133 performs processing for realizing multihop routing in IPv6. Description of functions of the transport layer processing unit 134 and the application layer processing unit 135 is omitted.

  The wired / wireless data processing unit 12 executes data processing necessary for the wireless device 10. For example, the wired / wireless data processing unit 12 transmits / receives data (hereinafter also referred to as wired data) to / from the data collection device 2 and data (hereinafter also referred to as wireless data) to / from the sensor device 3. (For example, format conversion) and processing for completing the station number list. In FIG. 4, the wired / wireless data processing unit 12 is written in addition to the application layer processing unit 135 as processing other than the communication application, and a processing unit in which these are combined may be configured.

  The first embodiment is characterized in that the wireless master device 6 and the wireless slave device 8 (and the data collection device 2 and the sensor device 3) cooperate to automatically create the station number list 6T.

  FIG. 5 is a functional block diagram showing a functional configuration related to automatic creation of the station number list 6T of the wireless master device 6, and FIG. 6 shows functional functions related to automatic creation of the station number list 6T of the wireless slave device 8. It is a functional block diagram showing a simple configuration. The automatic creation of the station number list 6T is a function that the wired / wireless data processing unit 12 and the application layer processing unit 135 are in charge of. However, when expressed functionally, it is as shown in FIGS.

  The wireless master device 6 includes a temporary station number list creation unit 20, a temporary station number list transmission unit 21, and a station number corresponding address addition unit 22. The wireless slave device 8 includes a temporary station number list receiving unit 25, a station number acquisition frame transmitting unit 26, and an accommodation station number recognizing / transmitting unit 27.

  The temporary station number list creation unit 20 cooperates with the data collection device 2 to create a station number list (hereinafter referred to as a temporary station number list) that includes only station numbers without including an address.

  The temporary station number list transmission unit 21 transmits the created temporary station number list to the wireless slave device 8.

  When the station number of the connected sensor device 3 is notified from the wireless slave unit 8, the station number corresponding address adding unit 22 notifies the wireless slave unit that has been notified as an address corresponding to the notified station number in the temporary station number list. 8 addresses are added.

  The temporary station number list receiving unit 25 receives and temporarily stores the temporary station number list transmitted by the wireless master device 6.

  The station number acquisition frame transmission unit 26 transmits a command (station number acquisition frame) destined for the station number described in the received temporary station number list to the sensor device 3 connected to itself. The station number acquisition frame transmission unit 26 sequentially transmits the station number acquisition frame for all station numbers in the temporary station number list, instead of the station number as the destination of such a station number acquisition frame.

  When the station number recognition / transmission unit 27 receives a reply command corresponding to the station number acquisition frame within a predetermined time after transmitting the station number acquisition frame, the station number inserted in the station number acquisition frame is the station number assigned to the sensor device 3 of the connection destination. It recognizes that it exists, and notifies that to the wireless master device 6.

  The data collection device 2 and the sensor device 3 in the first embodiment are unlikely to differ from the conventional data collection device and the sensor device, and the functional block diagram is not shown. To clarify.

(A-2) Operation of the First Embodiment Next, an operation for automatically creating a station number list in the sensor network (wireless communication system) 1 of the first embodiment having the above-described configuration will be described with reference to the drawings. explain. FIG. 7 is a sequence diagram showing an operation of automatically creating a station number list in the sensor network 1.

  In addition, when starting the automatic generation operation of the station number list, the data collection device 2 and the wireless master device 6 are already connected via the cable 5, and the sensor device 3 and the wireless slave device 8 are already connected via the cable 7. Need to be connected.

  Further, it is necessary to set a station number acquisition frame for acquiring a station number from the sensor device 3 for the wireless slave unit 8 (S201). For example, a station number acquisition frame may be set (written) in the wireless slave unit 8 at the time of factory shipment. Further, for example, at the site, the wireless slave unit 8 may be turned on for a short period of time and a station number acquisition frame may be set from a maintenance terminal (not shown), and a setting dip switch may be provided on the wireless slave unit 8. It may be provided and set in a power-off state.

  With the station number acquisition frame set for the wireless slave device 8 as described above, an operator such as a system administrator turns on the wireless master device 6 and the data collection device 2 in turn (S202, S203).

  The data collection device 2 transmits a station number notification frame in which one station number is inserted to the wireless base unit 6 after the wireless base unit 6 is started up (S204), and the wireless base unit 6 receives the station number notification frame. Then, the station number inserted from the received station number notification frame is extracted and added to the station number column of the station number list 6T (S205), and then all station numbers managed by the data collection device 2 are added to the station number list 6T. It is determined whether or not it is described (S206), and the above-described steps S204 and S205 are repeated until all the station numbers managed by the data collection device 2 are described in the station number list 6T.

  The station number notification frame may be a dedicated frame or may use another frame. For example, a data read request frame may be used as a station number notification frame. In this case, the wireless master device 6 regards a data read request frame that has arrived without an address described in the station number list 6T as a station number notification frame. You can do that. The wireless master device 6 describes the contents of the format of the station number notification frame (start character code, end character code, station number format, etc.), and extracts the station number from the station number notification frame based on the format contents.

  The wireless master device 6 may automatically determine whether or not all station numbers managed by the data collection device 2 are described in the station number list 6T. It may be performed based on the above. In the former case, for example, the operator sets the number of station numbers in advance in the wireless master unit 6 using the maintenance terminal, and the number added by the wireless master unit 6 to the station number list 6T is set to the set number of station numbers. It may be determined whether it has arrived, and when it arrives, a response indicating that the maintenance terminal has been reached may be given and displayed, or an LED provided in the wireless master device 6 may be turned on. In the latter case, for example, the wireless master device 6 is provided with a display function for the number added to the station number list 6T, or the number added to the station number list 6T is displayed on the maintenance terminal connected to the wireless master device 6. A function may be provided, and the operator may determine whether or not the displayed number matches the number of station numbers.

  The wireless master device 6 may execute to prompt the data collection device 2 to transmit the next station number notification frame, and the operator uses the maintenance terminal or the key input unit of the data collection device 2 or the like. You may execute using.

  In a situation where all the station numbers managed by the data collection device 2 are described in the station number list 6T (that is, a situation where the station number list has become a temporary station number list), the operator turns on the power of the sensor device 3 (S207). 3 is turned on, the wireless slave unit 8 is turned on (S208).

  The wireless slave device 8 starts an initial operation when the power is turned on, and requests the wireless master device 6 for network participation authentication processing (S209). In response to the request, the wireless slave device 6 requests the requested wireless slave device. The device 8 is authenticated, and when the authentication is successful, network participation permission is given to the wireless slave device 8 (S210).

  When the wireless slave device 8 participates in the sensor network 1, the wireless master device 6 transmits the temporary station number list created as described above to the wireless slave device 8 (S211).

  When receiving the station number list from the wireless master unit 6, the wireless slave unit 8 to which the temporary station number list is given is connected to the station number acquisition frame set as described above to each station number on the temporary station number list. When the received station number acquisition frame is addressed to its own device (S212), the sensor device 3 (when the destination station number of the station number acquisition frame matches the station number assigned to the own device). In response to the station number acquisition frame, a station number response frame is returned (S213). The sensor device 3 does not respond to a station number acquisition frame whose destination is a station number other than its own station number.

  When the station number response frame is returned from the sensor device 3 within a predetermined time, the wireless slave device 8 holds the station number of the sensor device 3 connected to the own device (S214).

  After the station number response frame is returned and held as the station number of the sensor device 3 or when the station number response frame is not returned within a predetermined time, the wireless slave unit 8 receives all the station numbers on the temporary station number list. In step S215, it is checked whether the station number acquisition frame has been transmitted (S215). If there is still a station number that has not been transmitted, the process returns to the transmission of a new station number acquisition frame in step S212.

  The station number acquisition frame and the station number response frame may be dedicated frames or may use other frames. For example, a data read request frame may be used as a station number notification frame, and a data read response frame may be used as a station number response frame. Even in such a case, the wireless slave unit 8 and the sensor device 3 recognize that the data read request frame is diverted as the station number notification frame and the data read response frame is diverted as the station number response frame based on the processing stage. can do.

  The wireless slave device 8 sequentially transmits the station number acquisition frames for all the station numbers on the temporary station number list, and when confirming the reply of the station number response frame, all of the stored station numbers of the sensor device 3 connected to the own device Is notified to the wireless master device 6 (S216).

  Upon receiving the notification of the holding station number from the wireless slave unit 8, the wireless master unit 6 describes the address of the wireless slave unit 8 that has transmitted the notification in the address portion of the corresponding station number in the station number list (temporary station number list) 6T ( S217).

  In FIG. 7, only one wireless slave device 8 is described. However, when there are a plurality of wireless slave devices 8, each wireless slave device 8 executes the processing described in FIG.

  The wireless master device 6 receives the notification of the holding station numbers from all the wireless slave devices 8, and additionally writes the addresses corresponding to the station numbers, thereby completing the station number list 6T.

  Although FIG. 7 shows a case where the wireless slave unit 8 and the sensor device 3 correspond one-to-one, the wireless slave unit 8 and the sensor device 3 may correspond one-to-N. In this case, Even so, the station number and the address are appropriately associated with the station number list 6T. In addition, the wireless slave unit 8 will connect any frame that has arrived from the wireless master unit 6 based on the station number held as the station number of the sensor device 3 connected to the own device in the future. Or whether to relay transmission.

(A-3) Effect of the First Embodiment According to the first embodiment, the system administrator or the like does not need to create the completed station number list 6T in advance, and uses the maintenance terminal to The trouble of setting the list 6T in the wireless master device 6 can be omitted. In other words, the system administrator or the like can easily create the station number list 6T by an operation of turning on the power of various devices. Further, according to the first embodiment, the system number can be smoothly operated without causing an error in the contents of the station number list 6T.

(B) Other Embodiments In the description of the first embodiment, various modified embodiments have been referred to. However, modified embodiments as exemplified below can also be cited.

(B-1) In the first embodiment, a case has been shown in which a temporary station number list in which only station numbers are described is also automatically created. The station number list may be generated by setting the master unit and then completing the method by the method described in the first embodiment.

  Also, the station numbers managed by the data collection device are not given to the wireless master device one by one, but the station numbers managed by the data collection device are collectively given to the wireless master device by one communication. You may do it.

(B-2) In the first embodiment, the case where the sensor device that received the station number acquisition frame that is not the destination does not return the station number response frame is shown. You may make it reply to a subunit | mobile_unit.

(B-3) In the first embodiment, the case of individual sending in which the temporary station number list is sent after authentication from the wireless master device to the wireless slave device has been shown. However, for all wireless slave devices that have been authenticated and immediately after authentication, Broadcast transmission may be performed.

(B-4) In the first embodiment, the transmission of station number acquisition frames for all station numbers in the temporary station number list is shown, but the number of sensor devices connected to the wireless slave units is known. In this way, transmission of a new station number acquisition frame may be stopped when the station numbers of all connected sensor devices are recognized.

(B-5) In the first embodiment, a case has been described in which a series of creation operations is terminated when creation of the station number list is completed. It is also possible to confirm the validity of the station number list that has just been created.

(B-6) In the first embodiment, the data collection device and the wireless master device are shown as separate devices, but an integrated device may be used. Similarly, a device in which the wireless slave device and the sensor device are integrated may be used.

  The claims are intended to include such integrated devices.

(B-7) Although the case where the present invention is applied to a sensor network has been described in the first embodiment, the application of the present invention is not limited to this. For example, the present invention can be applied to a network used for various purposes such as human health management (body temperature, blood pressure) and vending machine inventory management.

(B-8) In the first embodiment, an example in which the communication protocol related to the wireless master device or the wireless slave device is the ZigBee IP protocol is shown, but the communication protocol is not limited to this.

(B-9) The wireless master device and the wireless slave device can be configured by hardware, and a part thereof can be realized by software executed by the CPU and the CPU.

  DESCRIPTION OF SYMBOLS 1 ... Sensor network (wireless communication system), 2 ... Data collection device, 3, 3-1, 3-2 ... Sensor device, 4 ... Wireless multi-hop network, 6 ... Wireless main | base station, 8, 8-1, 8- 2 ... Wireless slave unit, 20 ... Temporary station number list creation unit, 21 ... Temporary station number list transmission unit, 22 ... Station number corresponding address addition unit, 25 ... Temporary station number list reception unit, 26 ... Station number acquisition frame transmission unit, 27 ... Accommodating Station number recognition / transmission unit.

Claims (12)

The first data processing device connected to the first radio device transmits the transmission data to the second data processing device connected to the second radio device to the station number which is the identifier of the second data processing device. Is inserted and given to the first radio, and the first radio refers to the built-in station number / address correspondence information, and the second radio that is the transmission destination of the transmission data by radio is referred to. In a wireless communication system that obtains an address and transmits transmission data toward the second wireless device,
In order to hold the station number / address correspondence information in the first radio unit,
The first radio is
Provisional correspondence information acquisition means for acquiring provisional station number / address correspondence information including only a station number without including an address;
Provisional correspondence information transmitting means for transmitting provisional station number / address correspondence information acquired by the provisional correspondence information acquisition means to the second wireless device;
When the station number of the connected second data processing apparatus is notified from the second wireless device, the address has been notified as the address corresponding to the notified station number in the temporary station number / address correspondence information A station number corresponding address adding means for adding the address of the second radio,
The second radio is
Temporary correspondence information receiving means for receiving temporary station number / address correspondence information transmitted by the first wireless device;
A station number acquisition transmission that uses the station number described in the received temporary station number / address correspondence information as a destination and performs station number confirmation transmission as to whether the station number is allocated to the connected second data processing apparatus. Means,
After the station number confirmation transmission, when a confirmation affirmative reply is received from the second data processing apparatus, it is recognized that the station number of the confirmation transmission is the station number assigned to the second data processing apparatus of the connection destination. A station number recognition / transmission means for notifying the first wireless device to that effect,
In response to the station number confirmation transmission, the second data processing apparatus confirms whether the station number is assigned to the own apparatus, and if it is assigned, a station number confirmation response means for sending a confirmation affirmative reply A wireless communication system comprising:   The provisional correspondence information acquisition means extracts a station number from a frame including a station number sequentially transmitted by the first data processing device, forms the provisional station number / address correspondence information, and obtains the provisional station number / address correspondence information. The wireless communication system according to claim 1, wherein the wireless communication system is acquired.   The wireless communication according to claim 1 or 2, wherein the station number acquisition transmission means sequentially performs station number confirmation transmission for all the station numbers described in the received temporary station number / address correspondence information. system. The first data processing device connected to the first radio device transmits the transmission data to the second data processing device connected to the second radio device to the station number which is the identifier of the second data processing device. Is inserted and given to the first radio, and the first radio refers to the built-in station number / address correspondence information, and the second radio that is the transmission destination of the transmission data by radio is referred to. In a wireless communication device having a set of the first wireless device and the first data processing device in a wireless communication system that obtains an address and transmits transmission data toward the second wireless device,
In order to hold the station number / address correspondence information in the first radio unit,
The first radio is
Provisional correspondence information acquisition means for acquiring provisional station number / address correspondence information including only a station number without including an address;
Provisional correspondence information transmitting means for transmitting provisional station number / address correspondence information acquired by the provisional correspondence information acquisition means to the second wireless device;
When the station number of the connected second data processing apparatus is notified from the second wireless device, the address has been notified as the address corresponding to the notified station number in the temporary station number / address correspondence information A wireless communication apparatus comprising: a station number corresponding address adding means for adding an address of a second wireless device.   The provisional correspondence information acquisition means extracts a station number from a frame including a station number sequentially transmitted by the first data processing device, forms the provisional station number / address correspondence information, and obtains the provisional station number / address correspondence information. The wireless communication device according to claim 4, wherein the wireless communication device is acquired. The first data processing device connected to the first radio device transmits the transmission data to the second data processing device connected to the second radio device to the station number which is the identifier of the second data processing device. Is inserted and given to the first radio, and the first radio refers to the built-in station number / address correspondence information, and the second radio that is the transmission destination of the transmission data by radio is referred to. In a wireless communication system that corresponds to the first wireless device in a wireless communication system that obtains an address and transmits transmission data toward the second wireless device,
In order to keep the above station number / address correspondence information
Provisional correspondence information acquisition means for acquiring provisional station number / address correspondence information including only a station number without including an address;
Provisional correspondence information transmitting means for transmitting provisional station number / address correspondence information acquired by the provisional correspondence information acquisition means to the second wireless device;
When the station number of the connected second data processing apparatus is notified from the second wireless device, the address has been notified as the address corresponding to the notified station number in the temporary station number / address correspondence information And a station number corresponding address adding means for adding an address of the second radio.   The provisional correspondence information acquisition means extracts a station number from a frame including a station number sequentially transmitted by the first data processing device, forms the provisional station number / address correspondence information, and obtains the provisional station number / address correspondence information. The wireless device according to claim 6, wherein the wireless device is acquired. The first data processing device connected to the first radio device transmits the transmission data to the second data processing device connected to the second radio device to the station number which is the identifier of the second data processing device. Is inserted and given to the first radio, and the first radio refers to the built-in station number / address correspondence information, and the second radio that is the transmission destination of the transmission data by radio is referred to. In a wireless communication device having a set of the second wireless device and the second data processing device in a wireless communication system that obtains an address and transmits transmission data toward the second wireless device,
In order to hold the station number / address correspondence information in the first radio unit,
The second radio is
Temporary correspondence information receiving means for receiving temporary station number / address correspondence information transmitted by the first wireless device;
A station number acquisition transmission that uses the station number described in the received temporary station number / address correspondence information as a destination and performs station number confirmation transmission as to whether the station number is allocated to the connected second data processing apparatus. Means,
After the station number confirmation transmission, when a confirmation affirmative reply is received from the second data processing apparatus, it is recognized that the station number of the confirmation transmission is the station number assigned to the second data processing apparatus of the connection destination. A station number recognition / transmission means for notifying the first wireless device to that effect,
In response to the station number confirmation transmission, the second data processing apparatus confirms whether the station number is assigned to the own apparatus, and if it is assigned, a station number confirmation response means for sending a confirmation affirmative reply A wireless communication device comprising:   9. The wireless communication apparatus according to claim 8, wherein the station number acquisition transmission unit sequentially performs station number confirmation transmission for all the station numbers described in the received temporary station number / address correspondence information.   The wireless communication device according to claim 8 or 9, wherein the second wireless device and one or a plurality of the second data processing devices are connected via an RS485 cable. The first data processing device connected to the first radio device transmits the transmission data to the second data processing device connected to the second radio device to the station number which is the identifier of the second data processing device. Is inserted and given to the first radio, and the first radio refers to the built-in station number / address correspondence information, and the second radio that is the transmission destination of the transmission data by radio is referred to. In a wireless communication system that corresponds to the second wireless device in a wireless communication system that obtains an address and transmits transmission data toward the second wireless device,
In order to hold the station number / address correspondence information in the first radio unit,
Temporary correspondence information receiving means for receiving temporary station number / address correspondence information transmitted by the first wireless device;
A station number acquisition transmission that uses the station number described in the received temporary station number / address correspondence information as a destination and performs station number confirmation transmission as to whether the station number is allocated to the connected second data processing apparatus. Means,
After the station number confirmation transmission, when a confirmation affirmative reply is received from the second data processing apparatus, it is recognized that the station number of the confirmation transmission is the station number assigned to the second data processing apparatus of the connection destination. And a receiving station number recognizing / transmitting means for notifying the first wireless device to that effect.   The radio apparatus according to claim 11, wherein the station number acquisition transmitting unit sequentially performs station number confirmation transmission for all the station numbers described in the received temporary station number / address correspondence information.

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