JP2012029159A - Wireless communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To automatically set a master-slave relation in both a slave unit side and a master unit side while the slave unit side takes the initiative in setting the master-slave relation.SOLUTION: A slave unit 1 transmits a transmission message M1 including all master unit IDs stored in a master unit information storage part 1H, own ID, and measurement data to a master unit 2. The master unit 2 transmits a master-slave relation settable notification A to the slave unit 1, if own master unit ID is not included in the transmission message M1 from the slave unit 1 and if a slave unit data storage part 2G has an unoccupied area. The slave unit 1 receives the master-slave relation settable notification A and, if the master unit information storage part 1H has an unoccupied area, stores a master ID attached to the master-slave relation settable notification A in the unoccupied area. Then the slave unit 1 transmits a master-slave relation setting notification B to the master unit 2 which is a transmission source of the master-slave relation settable notification A. The master unit 2 stores a slave unit ID attached to the master-slave relation setting notification B in the unoccupied area in the slave unit data storage part 2G.

Description

  The present invention relates to a wireless communication system that transmits and receives messages between a parent device and a child device having a bidirectional communication function.

  Conventionally, in a building having a large space, many facilities such as air conditioning equipment, crime prevention equipment, and lighting equipment are installed in the building. For these facilities, control devices (control devices for air conditioning, crime prevention, lighting, etc.) for operating the facilities appropriately or efficiently are provided. Many sensors are installed to sense and send information necessary to execute the control.

  Previously, these facilities, control devices, and sensors were all connected by wire, but in recent years, wireless communication technology has been developed, reducing the labor of wiring connections, and adding equipment after installation on site or In particular, a method of wirelessly connecting a control device and a sensor (wireless communication method) has been rapidly spreading so that the change can be flexibly dealt with.

  When a wireless communication system such as that described above is adopted in a building having a large space, a wireless control device that is a receiver that receives sensing information of a wireless sensor, and a transmitter that transmits the sensing information to the wireless control device. Since there are many wireless sensors, a wireless control device and a wireless sensor that transmit and receive each other are defined before operation, and a parent-child connection relationship between the wireless control device and the wireless sensor (hereinafter referred to as a parent-child relationship). Also called). That is, it is necessary to determine the connection relationship between the parent device and the child device that transmit and receive each other with the wireless control device as the parent device and the wireless sensor as the child device.

  The parent device can set a parent-child relationship with only one child device, or can set a parent-child relationship with a plurality of child devices in parallel, but can set a parent-child relationship with itself. The maximum number of possible slave units is determined in advance. In addition, it is possible for a slave unit to set a parent-child relationship with only one master unit, or to set a parent-child relationship in parallel with multiple master units, but it is possible to set a parent-child relationship with itself. The maximum number of possible master units is predetermined.

  Conventionally, the setting work of the parent-child relationship between the parent machine and the child machine has relied on humans, and if there are many parent machines and child machines at the site, the setting and changing work of the parent-child relationship is cumbersome and artificial. There were many cases where a parent-child relationship was set or changed by mistake.

  Once the parent-child relationship is set, the parent-child relationship is maintained unless it is reset. For this reason, for example, a slave set with a parent-child relationship breaks down and communication is disabled, the slave is carried outside the communication range, or a communication obstacle is placed between the master and slave. When communication is disabled, the sensing information of the slave unit is not received by the master unit, which causes a problem that the master unit cannot perform appropriate control. Furthermore, if such a communication-disabled parent-child relationship setting is left unattended, there will be a problem if the number of child devices that can be set with a parent-child relationship is reduced and a child device is added later. Occurs.

  On the other hand, in Japanese Patent Laid-Open No. 2004-228867, a master unit designating unit for designating a master unit, a test start unit for instructing a test start, and a test start are designated by the master unit designating unit. The parent-child relationship that sets the parent device that is the test target of the communication test as the connection destination, and the communication means that performs the communication test for this test target and the communication test result is good And a means for automatically making the change. This makes it easy to set and change the parent-child relationship.

  On the other hand, in Patent Document 2, in a wireless communication system including a slave unit that transmits data wirelessly and a master unit that receives transmission data from the slave unit, self-identification information is added to the slave unit. The data transmission means for periodically transmitting data is provided, and at least the identification information of the slave unit and the slave unit are stored as a storage area for the slave unit information in which the connection relationship between the parent and the child is set in the master unit. Slave device data storage area having a maximum number of slave devices capable of setting a parent-child relationship with the slave device data storage area in which transmission data is recorded, and data receiving means for receiving transmission data from the slave device The identification information reading means for reading the identification information added to the transmission data from the slave unit received by the data receiving means, and the identification information read by the identification information reading means If there is an empty area that is not recorded in the machine data storage area and in which the information of the child machine is not yet recorded in the child machine data storage area, it is listed as one of the remaining empty areas. The parent-child relationship automatic setting means for setting the parent-child relationship with the child device by recording the identification information from the child device, and the identification information in which the identification information confirmed by the identification information reading means is recorded in the child device data storage area In this case, transmission data recording means for recording transmission data from the slave unit is provided in the slave unit data storage area in which the identification information is recorded. As a result, the parent-child relationship with the child device is automatically set in the parent device up to the maximum number of child devices that can set the parent-child relationship with itself without bothering the user.

JP 2004-357254 A JP 2009-246869 A

  However, in the method disclosed in Patent Document 1 described above, the parent-child relationship cannot be set or changed unless the user operates the parent device designation unit and the test start unit of the child device. In other words, the method disclosed in Patent Document 1 is a semi-automatic method, and cannot be said to be a complete automatic method.

  Further, in the method disclosed in Patent Document 1 described above, if the user does not notice that communication between the parent device and the child device in which the parent-child relationship is set is disabled, the parent-child relationship that cannot be communicated as it is. The problem that the margin of the number of slave units that can set the parent-child relationship is reduced is not solved.

  On the other hand, the method shown in Patent Document 2 is excellent in that the problem in Patent Document 1 can be solved. However, in the method disclosed in Patent Document 2, since the slave unit can transmit but cannot receive, the parent-child relationship is set by the master unit. In a building monitoring system or an air conditioning control system in a large-scale space, the number of slave units is usually overwhelmingly larger than the number of master units (several times the number of master units). Further, the slave unit cannot establish a parent-child relationship with the set maximum number of parent units, and the parent-child relationship must be adjusted on the master unit side. For this reason, in the method disclosed in Patent Document 2, when the parent-child relationship is to be set all at once in the initial stage, the load on the parent device side is significantly increased.

  Further, in the method disclosed in Patent Document 2, the set parent-child relationship is stored only on the parent device side, and the child device side recognizes which parent device has a parent-child relationship set with itself. I can't. For this reason, in the unlikely event that the parent-child relationship information stored on the parent device side is lost, it is difficult to restore the parent-child relationship.

  In addition, if multiple parent devices back up and hold the parent-child relationship information of other parent devices, even if the parent-child relationship information of one parent device disappears, the parent and child that are backed up to another parent device Although it can be easily restored by reading the related information, the capacity of the storage unit of the parent device is increased.

  The present invention has been made in order to solve such problems. The purpose of the present invention is to set the parent-child relationship at the initiative of the slave unit and to establish the parent-child relationship on both the slave unit side and the master unit side. It is an object of the present invention to provide a wireless communication system that can automatically set the value.

  In order to achieve such an object, the present invention provides a wireless communication system in which a message is transmitted and received between a parent device having a bidirectional communication function and a child device. Maximum number of master units that can set a parent-child relationship with at least a master unit information storage area in which identification information of the master unit is stored as a storage area for information on the master unit for which a relationship (parent-child relationship) is set And a transmission message transmission means for periodically transmitting a transmission message including the identification information of all the parent devices stored in the parent device information storage area, its own identification information, and transmission data. The child unit data storage area in which at least the identification information of the child device and the transmission data from the child device are stored is stored as the child device information storage area in which the parent-child relationship is set in the parent device. Included in the slave unit data storage means having the maximum number of slave units that can be set to be connected, the transmission message receiving means for receiving a transmission message from the slave unit, and the received transmission message from the slave unit If the identification information of the parent device is not included in the identification information of the parent device, there is an empty area in which the child device information is not stored in the child device data storage area If there is an empty area, set the parent-child relationship that the parent-child relationship can be set by adding its own identification information to the child device that is the source of the received transmission message And a parent-child relationship setting enable notification transmitting means for transmitting the enable notification.

  In the present invention, the child device is provided with parent device information storage means having a parent device information storage area for the maximum number of parent devices that can set a parent-child relationship with itself. For example, when the maximum number of parent devices that can set a parent-child relationship with itself is two, the parent device information storage means has two parent device information storage areas PAR1 and PAR2. The parent device information storage areas PAR1 and PAR2 are empty areas in which information on the parent device is not yet stored in an initial state (for example, factory shipment state).

  The master unit is provided with slave unit data storage means having a slave unit data storage area for the maximum number of slave units that can set a parent-child relationship with itself. For example, when the maximum number of slave units that can set a parent-child relationship with itself is three, the slave unit data storage means has three slave unit data storage areas CAR1, CAR2, and CAR3. The slave unit data storage areas CAR1, CAR2, and CAR3 are empty areas in which the slave unit information is not yet stored in the initial state (for example, factory shipment state).

  Here, the slave unit is C1, the master unit is P1, P2, P3, and the slave unit C1 includes the identification information of all the master units stored in the master unit information storage area, its own identification information, and transmission data. Assume that a transmission message M1 is transmitted and the transmission message M1 is received by the parent devices P1, P2, and P3. When receiving the transmission message M1 from the child device C1, the parent devices P1, P2, P3 check the identification information of the parent device included in the transmission message M1, and the identification information of the parent device is included in the identification information of the parent device P1, P2, P3. Is not included, it is checked whether or not there is an empty area in the handset data storage area. Here, if there is an empty area in the child device data storage area, the parent devices P1, P2, and P3 determine that the parent-child relationship with the child device C1 can be set, and address the self device to the child device C1. Identification information # P1, # P2, # P3 is added, and parent-child relationship setting availability notifications A1, A2, A3 are transmitted.

  In the present invention, as a configuration for performing processing after transmission of a parent-child relationship setting availability notification from the parent device, for example, when the parent device receives a parent-child relationship setting possibility notification addressed to itself from the parent device, It is checked whether or not there is an empty area in which information of the parent device is not stored in the information storage area. If there is an empty area, it is added to the parent-child relationship setting availability notification received in one of the empty areas. The identification information of the parent device is stored, and the parent-child relationship setting notification for notifying the setting of the parent-child relationship on the child device side is transmitted to the parent device that is the transmission source of the parent-child relationship setting notification When a parent-child relationship setting means is provided and the parent device receives a parent-child relationship setting notification addressed to itself from the child device, the received parent-child relationship setting is set in one of the empty areas of the child device information storage area. Identification information of the slave unit added to the notification It is conceivable to provide a base-side child relationship setting means for storing.

  In such a configuration, in the slave unit C1, for example, when the master unit information storage areas PAR1, PAR2 are empty areas, the parent-child relationship setting notifications A1, A2, A3 are sent from the master units P1, P2, P3. When sent, any two of the parent machine identification information # P1, # P2, # P3 added to the sent parent-child relationship setting notification A1, A2, A3 are sent to the empty area PAR1, It will be stored in PAR2. For example, parent-child relationship setting possible notifications A1, A2 having good communication quality at the time of reception are selected, and parent device identification information # P1, # 2 added to the selected parent-child relationship setting possible notifications A1, A2 P2 is stored in the parent device information storage areas PAR1 and PAR2. As a result, the parent-child relationship with the parent devices P1 and P2 is automatically set on the child device C1 side. In this case, parent-child relationship setting notifications B1, B2 are sent from the child device C1 to the parent devices P1, P2 to notify the setting of the parent-child relationship on the child device side to the parent devices P1, P2, and the parent device P1. , P2 of the slave unit data storage area (empty area), the identification information # C1 of the slave unit C1 is stored. Thereby, after the parent-child relationship between the child device C1 and the parent devices P1 and P2 is determined under the initiative of the child device, not only the child device C1 side but also the parent-child relationship with the child device C1 on the parent devices P1 and P2 side. Is automatically set.

  According to the present invention, a master unit information storage unit having a master unit information storage area for the maximum number of master units that can set a parent-child relationship with the slave unit is stored in the master unit information storage area. It is possible to set up a parent-child relationship with the parent device by providing a transmission message transmission means that periodically transmits a transmission message including identification information of all the parent devices, self-identification information and transmission data. There is provided a slave unit data storage means having a slave unit data storage area for the maximum number of slave units. The master unit checks the identification information of the master unit included in the transmission message from the slave unit. If the identification information of the parent device does not include the identification information of its own parent device, it is checked whether there is an empty area in the child device data storage area. If there is an empty area, the child device that is the transmission source of the transmission message Your identification information to In addition, the parent-child relationship setting availability notification is sent, so for example, the parent-child relationship setting availability notification sent from the parent device is selected according to the communication quality at the time of reception and added to the selected parent-child relationship setting availability notification The identification information of the parent device is stored in the parent device information storage area (empty area) on the child device side, while the identification information of the child device is sent to the parent device that is the transmission source of the selected parent-child relationship setting notification. The slave unit data storage area (empty area) stores the identification information of the slave unit, so that the parent-child relationship is set by the slave unit, and the parent-child relationship is established on both the slave unit side and the parent unit side. Can be set automatically.

It is a figure which shows the principal part of one Embodiment of the radio | wireless communications system which concerns on this invention. It is a figure which shows schematic structure of the subunit | mobile_unit in this radio | wireless communications system. It is a figure which shows schematic structure of the main | base station in this radio | wireless communications system. It is a flowchart which shows the main processing operation | movement which CPU of the subunit | mobile_unit in this radio | wireless communications system performs. It is a flowchart which shows the main processing operation which CPU of the main | base station in this radio | wireless communications system performs. It is a flowchart of the parent-child relationship setting routine in FIG. It is a flowchart of the parent-child relationship setting change routine in FIG. It is a flowchart which shows the monitoring process of the registered main | base station timeout counter which CPU of the subunit | mobile_unit in this radio | wireless communications system performs regularly. It is a flowchart which shows the monitoring process of the registered subunit | mobile_unit timeout counter which CPU of the main | base station in this radio | wireless communications system performs regularly. It is a figure for demonstrating the automatic setting of the parent-child relationship between the subunit | mobile_unit and a main | base station in this radio | wireless communications system. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is explanatory drawing following FIG. It is a figure which shows the characteristic functional block structure of the subunit | mobile_unit in this radio | wireless communications system. It is a figure which shows the characteristic functional block structure of the main | base station in this radio | wireless communications system.

  Hereinafter, the present invention will be described in detail with reference to the drawings. FIG. 1 is a diagram showing a main part of an embodiment of a radio communication system according to the present invention.

  In the figure, 1 (1-1) is a slave unit and 2 (2-1, 2-2, 2-3) is a master unit. The handset 1-1 has a handset ID “100001” set as its own identification information. Base unit IDs “010001”, “010010”, and “010011” are set as identification information of the base units 2-1, 2-2, and 2-3.

  In this wireless communication system, it is assumed that the child device 1 can simultaneously establish a parent-child relationship with a plurality of parent devices 2. That is, it is assumed that the child device 1-1 can not only establish a parent-child relationship with the parent device 2-1, but also simultaneously establish a parent-child relationship with the parent device 2-2 and the parent device 2-3. In this example, only one slave unit 1 is shown, but there are a plurality of similar slave units 1.

  In this example, in order to simplify the description, the maximum number N of parent devices that can simultaneously establish a parent-child relationship with the child device 1 is two. Of course, the parent device 2 can simultaneously establish a parent-child relationship with a plurality of child devices 1, but the maximum number M of child devices that can simultaneously establish a parent-child relationship with the parent device 2 is three.

  In this wireless communication system, the handset 1 is a wireless sensor such as a temperature sensor or a humidity sensor, and has a bidirectional communication function. FIG. 2 shows a schematic configuration of the slave unit 1. The slave unit 1 includes a CPU 1A, a ROM 1B, a sensing unit 1C, a communication control unit 1D, a transmission unit 1E, a reception unit 1F, a slave unit ID storage unit 1G, a master unit information storage unit 1H, and a parent candidate. A list storage unit 1I and a registered parent device timeout counter TA (TA1, TA2) are provided. The identification information (child device ID) of the child device 1 is stored in the child device ID storage unit 1G. The CPU 1A operates according to a program stored in the ROM 1B.

  In the child device 1, the parent device information storage unit 1H is a storage area for information on the parent device in which the parent-child relationship is set, and the identification information (parent device ID) of the parent device and the later described from the parent device. It has a parent device information storage area PAR in which the communication quality (radio wave intensity) at the time of reception of the parent-child relationship setting availability notification and the reception time of the parent-child relationship setting availability notification are stored as one set.

  The number of parent device information storage areas PAR corresponds to the maximum number N of parent devices that can set a parent-child relationship with itself. In this example, since the maximum number N of parent devices that can set a parent-child relationship with the self is two, the parent device information storage area PAR is set to two, PAR1 and PAR2. . Further, the parent device information storage areas PAR1 and PAR2 are empty areas in which information on the parent device is not yet stored in the initial state (factory shipment state).

  The parent candidate list storage unit 1I has, as parent device candidates (parent candidates) capable of setting a parent-child relationship with itself, identification information (parent device ID) of the parent device and a parent-child relationship setting notification from the parent device Has a parent candidate list LST in which the communication quality (the radio wave intensity) at the time of reception and the reception time of the notification that the parent-child relationship can be set are written as one set. The parent candidate list LST is in an initial state (factory shipment state) in which the parent candidate information is not yet stored.

  The registered parent device timeout counter TA1 is provided as a timeout counter corresponding to the parent device (first registered parent device) whose parent device information is stored in the parent device information storage area PAR1. The timeout counter TA2 is provided as a timeout counter corresponding to the parent device (second registered parent device) whose parent device information is stored in the parent device information storage area PAR2.

  In this wireless communication system, the base unit 2 is a wireless control device for air conditioning and crime prevention, and has a bidirectional communication function. FIG. 3 shows a schematic configuration of base unit 2. Base unit 2 includes CPU 2A, ROM 2B, communication control unit 2C, transmission unit 2D, reception unit 2E, base unit ID storage unit 2F, slave unit data storage unit 2G, and registered slave unit timeout counter TB. (TB1, TB2, TB3). The identification information (parent device ID) of the parent device 2 is stored in the parent device ID storage unit 2F. The CPU 2A operates according to a program stored in the ROM 2B.

  In the parent device 2, the child device data storage unit 2G has, as a storage area for information on the child device in which the parent-child relationship is set, identification information (child device ID) of the child device, measurement data from the child device, It has a handset data storage area CAR in which the communication quality (radio wave intensity) when receiving the measurement data and the reception time of the measurement data are stored as one set.

  The number of child device data storage areas CAR corresponds to the maximum number M of child devices that can set a parent-child relationship with itself. In this example, since the maximum number M of slave units that can set a parent-child relationship with the self is set to three, the slave unit data storage area CAR corresponds to three of CAR1, CAR2, and CAR3. Has been. In addition, the slave unit data storage areas CAR1, CAR2, and CAR3 are empty areas in which slave unit information is not yet stored in the initial state (factory shipment state).

  The registered child device timeout counter TB1 is provided as a timeout counter corresponding to the child device (first registered child device) in which information on the child device is stored in the child device information storage area CAR1, and the registered child device time-out counter TB1. The counter TB2 is provided as a timeout counter corresponding to the slave unit (second registered slave unit) whose slave unit information is stored in the slave unit information storage area CAR2, and the registered slave unit timeout counter TB3 is the slave unit information. It is provided as a time-out counter corresponding to the slave unit (registered third slave unit) in which information on the slave unit is stored in the storage area CAR3.

  Next, with respect to operations unique to the present embodiment in this wireless communication system, the base unit information storage unit 1H of the base unit 1 and the base unit data storage unit of the base unit 2 will be described with reference to the flowcharts shown in FIGS. A description will be given by taking as an example the rise from the initial state of 2G.

  4 is a flowchart showing a main processing operation executed by the CPU 1A of the child device 1, FIG. 5 is a flowchart showing a main processing operation executed by the CPU 2A of the parent device 2, and FIG. 6 is a parent-child relationship setting routine in FIG. FIG. 7 is a flowchart of the parent-child relationship setting change routine in FIG. FIG. 8 is a flowchart showing a monitoring process of a registered parent device timeout counter periodically executed by the CPU 1A of the child device 1. FIG. 9 shows a registered child device timeout counter periodically executed by the CPU 2A of the parent device 2. It is a flowchart which shows the monitoring process.

[Automatic setting of parent-child relationship between handset 1-1 and base 2-1.]
[Send message transmission from slave unit]
When the transmission period of measurement data comes (FIG. 4: YES in step S101), the slave unit 1-1 transmits a transmission message M1 including its own ID, the registered master unit ID, and the measurement data to the master unit 2. (See step S102, FIG. 10).

  In this case, the slave unit 1-1 reads the slave unit ID “100001” stored in the slave unit ID storage unit 1G as information included in the transmission message M1, and stores it in the master unit information storage unit 1H. All the parent device IDs that have been registered are read out as registered parent device IDs, but since they are in the initial state, the parent device ID is not yet stored in the parent device information storage unit 1H. For this reason, the slave unit 1-1 makes the write spaces SP1 and SP2 of the registered master unit ID in the transmission format blank, and transmits a transmission message M1 including the read slave unit ID “100001” and measurement data. To do.

  Then, the counting operation of the registered parent device timeout counter TA is started (step S103), and after waiting for reception for a predetermined time (step S104), the presence / absence of reception from the parent device 2 is confirmed (step S105). In this case, since the master unit ID is not yet stored in the master unit information storage unit 1H, that is, there is no registered master unit, the count of the registered master unit timeout counter TA in step 103 is actually performed. No action is taken.

[Notification that parent-child relationship can be set from the parent device to the child device]
When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-1 is addressed to itself. It is checked whether or not (step S203). In this case, since the transmission message M1 does not include its own ID, that is, since its own ID is not written in the spaces SP1 and SP2 in the transmission format, it is determined that it is not addressed to itself.

  When base unit 2-1 determines that transmission message M1 is not addressed to itself (NO in step S203), base unit 2-1 checks whether there is an empty area in which handset information is not written in handset data storage unit 2G. (Step S204). In this case, the slave unit data storage area CAR of the slave unit data storage unit 2G is all empty.

  As a result, the base unit 2-1 determines that there is an empty area in the handset data storage unit 2G (YES in step S204), and sends its own ID to the handset 1-1 that is the transmission source of the transmission message M1. And a parent-child relationship setting notification A1 indicating that the parent-child relationship can be set is transmitted (step S205).

  Similarly to the parent device 2-1, the parent devices 2-2 and 2-3 determine that there is an empty area in the child device data storage unit 2G when the transmission message M1 is sent from the child device 1-1. Then, addressed to the slave unit 1-1 that is the transmission source of the message M1, the self ID is added, and parent-child relationship setting availability notifications A2 and A3 to the effect that the parent-child relationship can be set are transmitted.

[Creating a parent candidate list on the handset]
The slave unit 1-1 continues to confirm reception from the master unit 2 for a predetermined time (step S105), and during this period, the parent-child relationship setting notification A1 is received from the master units 2-1, 2-2, 2-3. , A2 and A3 are sent (YES in step 105, “parent-child relationship setting availability notification” in step S106), the communication quality (radio wave intensity) upon reception of the parent-child relationship setting availability notifications A1, A2 and A3 is indicated. Measurement is performed, and the reception time is given together with the parent device ID added to the parent-child relationship setting availability notifications A1, A2, A3, and added to the parent candidate list LST as parent device candidate information (step S107).

[Confirmation of empty area of base unit information storage]
And the subunit | mobile_unit 1-1 continues the confirmation of reception from the main | base station 2 for a fixed time (it is YES of step S108), and there exists an empty area in which the information of the main | base station is not written in the main | base station information storage part 1H It is checked whether or not to perform (step S109). In this case, the parent device information storage area PAR of the parent device information storage unit 1H is all an empty area (initial state).

[Setting the parent-child relationship on the slave unit (registration)]
Thereby, the child device 1-1 determines that there is an empty area in the parent device information storage unit 1H (YES in step S109), and performs a parent-child relationship setting process (step S110). In this parent-child relationship setting process, the child device 1-1 selects the parent device X having the best communication quality from the parent candidate list LST (FIG. 6: step S301), and information on the selected parent device X (parent device). ID, communication quality, and reception time) are stored in the empty area of the parent device information storage unit 1H (step S302). Then, a parent-child relationship setting notification in which the child device ID and the parent device ID of the parent device X are added is transmitted to the parent device X (step S303).

  In the case of the example shown in FIG. 10, the child device 1-1 selects the parent device 2-1 (parent device ID “010001”) as the parent device X having the best communication quality from the parent candidate list LST, that is, the communication quality. The parent device 2-1 that has transmitted the best parent-child relationship setting notification A1 is selected, and the information (parent device ID, communication quality, reception time) of the selected parent device 2-1 is stored in the parent device information storage unit 1H. Store in the parent device information storage area PAR1 (empty area). As a result, the parent-child relationship with the parent device 2-1 is set (registered) on the child device 1-1 side. And the subunit | mobile_unit 1-1 addresses the setting of the parent-child relationship in the subunit | mobile_unit 1-1 side to the main | base station 2-1 of the transmission origin of the parent-child relationship setting possible notification A1. A parent-child relationship setting notification B1 is transmitted.

[Setting the parent-child relationship on the parent machine (registration)]
When the parent device 2-1 receives the parent-child relationship setting notification B 1 addressed to itself from the child device 1-1 (FIG. 5: “parent-child relationship setting notification” in step S 202, YES in step S 209), the child device data storage unit In the 2G child device data storage area CAR1 (empty area), the child device ID of the child device 1-1 added to the received parent-child relationship setting notification B1 is stored (step S210). As a result, after the parent-child relationship between the child device 1-1 and the parent device 2-1 is determined under the initiative of the child device, the child device 1 is not only on the child device 1-1 side but also on the parent device 2-1 side. The parent-child relationship with -1 is set (registered).

[Data communication between slave unit 1-1 and parent unit 2-1 for which a parent-child relationship is set]
When the transmission period of measurement data comes (FIG. 4: YES in step S101), the slave unit 1-1 transmits a transmission message M1 including its own ID, the registered master unit ID, and the measurement data to the master unit 2. (See step S102, FIG. 11).

  In this case, the slave unit 1-1 reads the slave unit ID “100001” stored in the slave unit ID storage unit 1G as its own ID, and is stored in the base unit information storage area PAR1 of the base unit information storage unit 1H. The parent device ID “010001” is read out as a registered parent device ID, and a transmission message M1 including the read child device ID “100001”, the registered parent device ID “010001” and measurement data is transmitted.

  Then, the count operation of the registered parent device timeout counter TA1 is started (step S103), and after waiting for reception for a certain time (step S104), the presence / absence of reception from the parent device 2 is confirmed (step S105).

  When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-1 is addressed to itself. It is checked whether or not (step S203). In this case, since the transmission message M1 includes its own ID, it is determined that it is addressed to itself.

  When the base unit 2-1 determines that the transmission message M1 from the sub unit 1-1 is addressed to itself (YES in step S203), the base unit 2-1 fetches the measurement data included in the transmission message M1 and takes the measurement The data is written in the slave unit data storage area CAR1 in which the slave unit ID “100001” of the slave unit 1-1 is stored together with the communication quality (radio wave intensity) and the reception time when receiving the measurement data (step S206). ).

  Then, base unit 2-1 starts the counting operation of registered slave unit timeout counter TB 1 (step S 207), and adds its own ID to transmission unit slave unit 1-1 of transmission message M 1. Then, a reception confirmation response C1 notifying that the measurement data has been taken in is transmitted (step S208).

  When the child device 1-1 receives the reception confirmation response C1 from the parent device 2-1 (YES in step S105, “reception confirmation response” in step S106), the child device 1-1 counts the registered parent device timeout counter TA1 started in step 103. The count operation is reset (step S112).

[Automatic setting of parent-child relationship between handset 1-1 and base 2-2]
When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-2 sends the transmission message M1 to itself. It is checked whether or not (step S203). In this case, the base message ID “010001” is included in the transmission message M1, but since it is not its own ID, it is determined that it is not addressed to itself.

  If base unit 2-2 determines that transmission message M1 is not addressed to itself (NO in step S203), base unit 2-2 checks whether there is an empty area in which handset information is not written in handset data storage unit 2G. (Step S204). In this case, the slave unit data storage area CAR of the slave unit data storage unit 2G is all empty.

  Thereby, the base unit 2-2 determines that there is an empty area in the handset data storage unit 2G (YES in step S204), and is addressed to the handset 1-1 that is the transmission source of the transmission message M1. And a parent-child relationship setting notification A2 indicating that the parent-child relationship can be set is transmitted (step S205).

  Similarly to the base unit 2-2, when the transmission message M1 is sent from the handset 1-1, the base unit 2-3 determines that there is an empty area in the handset data storage unit 2G, and the message M1. Is sent to the child device 1-1 of the transmission source, and a parent-child relationship setting notification A3 is transmitted to the effect that the parent-child relationship can be set.

[Creating a parent candidate list on the handset]
The slave unit 1-1 continues the confirmation of reception from the master unit 2 for a predetermined time (step S105), and during this time, the master unit 2-2 and 2-3 send notifications A2 and A3 indicating that the parent-child relationship can be set When it is received (YES in step 105, “parent-child relationship setting possible notification” in step S106), the communication quality (radio wave intensity) at the time of reception of the parent-child relationship setting possible notifications A2 and A3 is measured, and the parent-child relationship can be set. The reception time is attached together with the parent device ID added to the notifications A2 and A3, and the information is added to the parent candidate list LST as parent device candidate information (step S107).

[Confirmation of empty area of base unit information storage]
And the subunit | mobile_unit 1-1 continues the confirmation of reception from the main | base station 2 for a fixed time (it is YES of step S108), and there exists an empty area in which the information of the main | base station is not written in the main | base station information storage part 1H It is checked whether or not to perform (step S109). In this case, although the parent device information is written in the parent device information storage area PAR1 of the parent device information storage unit 1H, the parent device information is not written in the parent device information storage area PAR2, and the empty area It is said that.

[Setting the parent-child relationship on the slave unit (registration)]
Thereby, the child device 1-1 determines that there is an empty area in the parent device information storage unit 1H (YES in step S109), and performs a parent-child relationship setting process (step S110). In this parent-child relationship setting process, the child device 1-1 selects the parent device X having the best communication quality from the parent candidate list LST (FIG. 6: step S301), and information on the selected parent device X (parent device). ID, communication quality, and reception time) are stored in the empty area of the parent device information storage unit 1H (step S302). Then, a parent-child relationship setting notification in which the child device ID and the parent device X ID are added is transmitted to the parent device X (step S303).

  In the case of the example shown in FIG. 11, the child device 1-1 selects the parent device 2-2 (parent device ID “010010”) as the parent device X having the best communication quality from the parent candidate list LST, that is, the communication quality. The parent device 2-2 that has transmitted the best parent-child relationship setting notification A2 is selected, and information (parent device ID, communication quality, reception time) of the selected parent device 2-2 is stored in the parent device information storage unit 1H. The information is stored in the parent device information storage area PAR2 (see FIG. 12). As a result, the parent-child relationship with the parent device 2-2 is set (registered) on the child device 1-1 side. Then, the child device 1-1 adds its own ID to the parent device 2-2 that is the transmission source of the parent-child relationship setting enable notification A2, and notifies the setting of the parent-child relationship on the child device 1-1 side. A parent-child relationship setting notification B2 is transmitted.

[Setting the parent-child relationship on the parent machine (registration)]
When the parent device 2-2 receives the parent-child relationship setting notification B2 addressed to itself from the child device 1-1 (FIG. 5: “parent-child relationship setting notification” in step S202, YES in step S209), the child device data storage unit In the 2G child device data storage area CAR1 (empty area), the child device ID of the child device 1-1 added to the received parent-child relationship setting notification B2 is stored (step S210). Accordingly, after the parent-child relationship between the child device 1-1 and the parent device 2-2 is determined under the initiative of the child device, the child device 1 is not only on the child device 1-1 side but also on the parent device 2-2 side. The parent-child relationship with -1 is set (registered).

[Data communication between slave unit 1-1 and parent units 2-1 and 2-2 in which a parent-child relationship is set]
When the transmission period of measurement data comes (FIG. 4: YES in step S101), the slave unit 1-1 transmits a transmission message M1 including its own ID, the registered master unit ID, and the measurement data to the master unit 2. (See step S102, FIG. 13).

  In this case, the slave unit 1-1 reads the slave unit ID “100001” stored in the slave unit ID storage unit 1G as its own ID, and is stored in the base unit information storage area PAR1 of the base unit information storage unit 1H. The parent device ID “010001” and the parent device ID “010010” stored in the parent device information storage area PAR2 are read as registered parent device IDs, and the read child device ID “100001” and the registered parent device ID are read. A transmission message M1 including machine IDs “010001”, “010010” and measurement data is transmitted.

  Then, the counting operation of the registered parent device time-out counters TA1 and TA2 is started (step S103). After waiting for reception for a predetermined time (step S104), the presence / absence of reception from the parent device 2 is confirmed (step S105). .

  When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-1 is addressed to itself. It is checked whether or not (step S203). In this case, since the transmission message M1 includes its own ID, it is determined that it is addressed to itself.

  When the base unit 2-1 determines that the transmission message M1 from the sub unit 1-1 is addressed to itself (YES in step S203), the base unit 2-1 fetches the measurement data included in the transmission message M1 and takes the measurement The data is written (overwritten) in the child device data storage area CAR1 in which the child device ID “100001” of the child device 1-1 is stored together with the communication quality (the radio wave intensity) and the reception time when the measurement data is received. (Step S206).

  The master unit 2-1 starts (restarts) the counting operation of the registered slave unit timeout counter TB1 (step S207), and sends it to the slave unit 1-1 as the transmission source of the transmission message M1. An ID is added and a reception confirmation response C1 notifying that the measurement data has been taken in is transmitted (step S208).

  When the child device 1-1 receives the reception confirmation response C1 from the parent device 2-1 (YES in step S105, “reception confirmation response” in step S106), the child device 1-1 counts the registered parent device timeout counter TA1 started in step 103. The count operation is reset (step S112).

  When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-2 sends the transmission message M1 to itself. It is checked whether or not (step S203). In this case, since the transmission message M1 includes its own ID, it is determined that it is addressed to itself.

  When the base unit 2-2 determines that the transmission message M1 from the slave unit 1-1 is addressed to itself (YES in step S203), the base unit 2-2 takes in the measurement data included in the transmission message M1 and takes the measurement The data is written in the slave unit data storage area CAR1 in which the slave unit ID “100001” of the slave unit 1-1 is stored together with the communication quality (radio wave intensity) and the reception time when receiving the measurement data (step S206). ).

  Then, base unit 2-2 starts counting operation of registered slave unit timeout counter TB1 (step S207), and adds its own ID to transmission unit slave unit 1-1 of transmission message M1. Then, a reception confirmation response C2 notifying that the measurement data has been taken in is transmitted (step S208).

  When the child device 1-1 receives the reception confirmation response C2 from the parent device 2-2 (YES in step S105, “reception confirmation response” in step S106), the child device 1-1 sets the registered parent device timeout counter TA2 started in step 103. The count operation is reset (step S112).

[Automatic setting of parent-child relationship between child device 1-1 and parent device 2-3 (change of parent-child relationship setting)]
When the transmission message M1 is sent from the child device 1-1 (FIG. 5: YES in step S201, “transmission message” in step S202), the parent device 2-3 is addressed to itself. It is checked whether or not (step S203). In this case, although the base message IDs “010001” and “010010” are included in the transmission message M1, it is determined that it is not addressed to itself because it is not its own ID.

  If base unit 2-3 determines that transmission message M1 is not addressed to itself (NO in step S203), base unit 2-3 checks whether there is an empty area in which handset information is not written in handset data storage unit 2G. (Step S204). In this case, the slave unit data storage area CAR of the slave unit data storage unit 2G is all empty.

  As a result, the base unit 2-3 determines that there is an empty area in the handset data storage unit 2G (YES in step S204), and addresses itself to the handset 1-1 that is the transmission source of the transmission message M1. And a parent-child relationship setting notification A3 indicating that the parent-child relationship can be set is transmitted (step S205).

[Creating a parent candidate list on the handset]
The slave unit 1-1 continues to confirm reception from the master unit 2 for a certain period of time (step S105), and when a parent-child relationship setting possibility notification A3 is sent from the master unit 2-3 during this period (step S105) 105, “parent-child relationship setting possible notification” in step S106), communication quality (radio wave intensity) upon reception of the parent-child relationship setting possible notification A3 is measured, and the parent added to the parent-child relationship setting possible notification A3 A reception time is added together with the machine ID and added to the parent candidate list LST (step S107).

[Confirmation of empty area of base unit information storage]
And the subunit | mobile_unit 1-1 continues the confirmation of reception from the main | base station 2 for a fixed time (it is YES of step S108), and there exists an empty area in which the information of the main | base station is not written in the main | base station information storage part 1H It is checked whether or not to perform (step S109). In this case, parent device information is written in both the parent device information storage areas PAR1 and PAR2 of the parent device information storage unit 1H, and there is no empty area in the parent device information storage unit 1H.

[Change of parent-child relationship setting on slave unit]
Thereby, the child device 1-1 determines that there is no empty area in the parent device information storage unit 1H (NO in step S109), and performs a parent-child relationship setting change process (step S111). In the parent-child relationship setting change process, the child device 1-1 selects the parent device X having the best communication quality from the parent candidate list LST (FIG. 7: step S401), and is set in the parent device information storage unit 1H. The parent device Y having the worst communication quality is selected from the existing parent devices (step S402), and the communication quality Q (X) of the parent device X is compared with the communication quality Q (Y) of the parent device Y (step S403). .

  Based on the comparison result, if communication quality Q (X) of base unit X is better than communication quality Q (Y) of base unit Y (YES in step S404), it is determined that the replacement condition is satisfied. The information of the parent device Y is deleted from the parent device information storage unit 1H, and the information of the parent device X (parent device ID, communication quality, reception time) is stored instead (step S405). Then, a parent-child relationship setting notification in which the child device ID and the parent device X ID are added is transmitted to the parent device X (step S406). If communication quality Q (X) of base unit X is not better than communication quality Q (Y) of base unit Y (NO in step S404), the process is terminated.

  In the case of the example shown in FIG. 13, the slave unit 1-1 selects the master unit 2-3 (master unit ID “010011”) as the master unit X having the best communication quality from the parent candidate list LST, that is, the parent-child relationship The parent device 2-3 that has transmitted the settable notification A3 is selected, and the parent device 2-2 (parent device ID) is selected as the parent device Y having the worst communication quality from the parent devices set in the parent device information storage unit 1H. “010010”) is selected, that is, the parent device 2-2 that has transmitted the parent-child relationship setting possible notification A2 at the time of registration is selected, and the communication quality when the parent-child relationship setting available notification A3 is received and the parent-child relationship setting possible notification A2 is received Compare the communication quality.

  In this case, since the communication quality at the time of receiving the parent-child relationship setting notification A3 is better than the communication quality at the time of receiving the parent-child relationship setting notification A2, the handset 1-1 determines that the replacement condition is satisfied, The information of the parent device 2-2 stored in the parent device information storage area PAR2 of the parent device information storage unit 1H is deleted, and instead of the information of the parent device 2-3 (parent device ID, communication quality, reception time) Is stored (see FIG. 14). As a result, the parent-child relationship with the parent device 2-3 is changed and set (registered) on the child device 1-1 side. Then, the child device 1-1 sends its own ID to the parent device 2-3 that is the transmission source of the parent-child relationship setting enable notification A3, and notifies the setting of the parent-child relationship on the child device 1-1 side. A parent-child relationship setting notification B3 is transmitted.

[Setting the parent-child relationship on the parent machine (registration)]
When the parent device 2-3 receives the parent-child relationship setting notification B3 addressed to itself from the child device 1-1 (FIG. 5: “parent-child relationship setting notification” in step S202, YES in step S209), the child device data storage unit In the 2G child device data storage area CAR1 (empty area), the child device ID of the child device 1-1 added to the received parent-child relationship setting notification B3 is stored (step S210). As a result, after the parent-child relationship between the child device 1-1 and the parent device 2-3 is determined under the initiative of the child device, not only the child device 1-1 side but also the child device 1-side is provided on the parent device 2-3 side. The parent-child relationship with 1 is set (registered).

[Automatic cancellation of parent-child relationship with the slave unit on the master unit side]
When the parent-child relationship with the parent device 2-2 is canceled on the child device 1-1 side, the parent device ID “010010” of the parent device 2-2 is included in the transmission message M1 received by the parent device 2-2. It is not included (see FIG. 15). For this reason, the master unit 2-2 cannot capture the measurement data included in the transmission message M1 from the slave unit 1-1, and the registered slave unit timeout counter TB1 started when the previous measurement data is fetched is stored in the master unit 2-2. Timeout.

  The parent device 2-2 monitors the operation of the registered child device timeout counter TB (TB1, TB2, TB3) according to the flowchart shown in FIG. 9 (step S601), and the registered child device timeout counter TB1 times out. Is confirmed (YES in step S602), the slave unit information stored in the slave unit data storage area CAR1 corresponding to the registered slave unit timeout counter TB1 is deleted (step S603).

  Accordingly, when the parent-child relationship with the parent device 2-2 is canceled on the child device 1-1 side, the parent-child relationship with the child device 1-1 is automatically canceled also on the parent device 2-2 side. Become. In this case, since the parent-child relationship with the child device 1-1 remains on the parent device 2-2 side for a while after the parent-child relationship is deleted on the child device 1-1 side, it is inconvenient. There may be cases. In view of this, a notification to cancel the parent-child relationship may be transmitted from the child device 1-1 to the parent device 2-2 that has deleted the parent-child relationship.

[Automatic cancellation of parent-child relationship with the parent device on the child device side]
In FIG. 13, each time the slave unit 1-1 transmits the transmission message M1, the slave unit 1-1 starts the registered master unit timeout counters TA1 and TA2, and receives reception confirmation responses C1 and C2 from the master units 2-1 and 2-2. When it is returned, the count operation of the registered parent device timeout counters TA1 and TA2 is reset. Here, for example, if the reception confirmation response C1 is not returned from the parent device 2-1, the count operation of the registered parent device timeout counter TA1 is not reset, and time-out occurs.

  The slave unit 1-1 monitors the operation of the registered master unit timeout counter TA (TA1, TA2) according to the flowchart shown in FIG. 8 (step S501), and confirms the timeout of the registered master unit timeout counter TA1. If so (YES in step S502), the parent device information stored in the parent device information storage area PAR1 corresponding to the registered parent device timeout counter TA1 is deleted (step S503).

  As a result, when the reception confirmation response C1 is not sent from the parent device 2-1 due to a communication failure or the like, the parent-child relationship with the parent device 2-1 is automatically canceled on the child device 1-1 side. . In this case, if the parent-child relationship with the parent device 2-1 is canceled on the child device 1-1 side, the parent device ID of the parent device 2-1 is not included in the transmission message M1, so the parent device 2- The registered child device timeout counter TB1 on the first side times out, and the parent-child relationship with the child device 1-1 is automatically canceled on the parent device 2-1 side. Further, since the setting information of the parent-child relationship is deleted on the side of the child device 1-1, the resetting of the parent-child relationship is automatically prompted.

  Similarly, for example, when the slave unit 1-1 is carried outside the communication range and the reception confirmation responses C1 and C2 from the master units 2-1 and 2-2 cannot be confirmed, the same applies. The parent-child relationship with the parent devices 2-1 and 2-2 is automatically canceled on the child device 1-1 side. Further, in this case, since the parent devices 2-1 and 2-2 cannot take in the transmission message M1 including the measurement data from the child device 1-1, the child devices on the parent devices 2-1 and 2-2 side as well. The parent-child relationship with 1-1 is automatically canceled.

  As can be seen from the above description, according to the present embodiment, since the setting of the parent-child relationship is performed on the initiative of the child device side, when trying to set the parent-child relationship all at once, the load on the parent device side is remarkably high. It can be avoided that it becomes high. That is, since the parent device 2 determines which parent device 2 and the parent-child relationship are set, the parent device 2 determines which parent device 2 sets the parent-child relationship by communicating between the parent devices 2. There is no need to do so, and the load on the base unit 2 side is reduced.

  In addition, according to the present embodiment, since the parent-child relationship is automatically set on both the child device side and the parent device side, even if the parent-child relationship information stored on the parent device 2 side is lost, Further, even when the parent-child relationship information stored on the side of the child device 1 is lost, it is possible to restore the parent-child relationship before the loss using the parent-child relationship information remaining in either one.

  In the above-described embodiment, the maximum number N of parent devices that can set the parent-child relationship of the child device 1 is two, and the maximum number of child devices that can set the parent-child relationship of the parent device 2 is as follows. Although the number M is three, it goes without saying that the maximum number N and M can be set freely. For example, if the maximum number N is set to 1 in the slave unit 1, it is possible to prohibit the parent-child relationship from being established simultaneously with the plurality of master units 2. That is, only one parent device information storage area PAR of the parent device information storage unit 1H in the child device 1 is used, and a type in which the child device can not set a parent-child relationship simultaneously with a plurality of parent devices (parent-child relationship duplication NG Type).

  Further, in the above-described embodiment, on the handset 1 side, for example, when the base unit information storage areas PAR1 and PAR2 of the base unit information storage unit 1H are empty areas, the best communication quality is obtained from the parent candidate list LST. Only one parent device X is selected and the information of the parent device X is stored in the parent device information storage area PAR1 of the parent device information storage unit 1H. It is also possible to select one and store the information of the two selected master units at once in the base unit information storage areas PAR1 and PAR2 of the base unit information storage unit 1H. Further, instead of the communication quality, the parent device information may be stored in the parent device information storage areas PAR1 and PAR2 of the parent device information storage unit 1H in the order in which the parent-child relationship setting availability notification is sent.

  Further, in the above-described embodiment, when there is no empty area in the parent device information storage unit 1H in the child device 1, the change condition is set as the communication quality, and the setting change of the parent device 2 and the parent-child relationship with better communication quality is performed. However, for example, the priority order may be set for the master unit 2 so that the parent-child relationship with the master unit 2 having a higher priority order is changed. By setting the replacement condition as communication quality, the stability of wireless communication is improved. By setting the replacement condition as a priority order, a parent-child relationship is automatically set preferentially for a more important parent machine. In addition, when there is no empty area in the parent device information storage unit 1H, the change of the parent-child relationship setting is performed for the replacement candidate parent device and the deletion candidate parent device not for each one, but for each plurality. You may do it.

  Further, in the above-described embodiment, when there is no empty area in the parent device information storage unit 1H in the child device 1, the parent-child relationship setting change is automatically performed. However, the parent-child relationship automatic setting change is performed. You may make it not perform. That is, in the child device 1, when the number of registered parent devices reaches the maximum number N, the registration of the parent device may be closed at that time, and the setting change of the parent-child relationship thereafter may be prohibited.

  For example, in the parent device 2, in the transmission message M1 from the child device 1, the parent device ID writing spaces SP1 and SP2 are checked in the parent device 2, and all of the writing spaces SP1 and SP2 are parented. When the machine ID is written, it can be realized by not sending a parent-child relationship setting possible notification from the parent machine 2 to the child machine 1. In this way, since the parent candidate list LST is not created in the child device 1, setting change of the parent-child relationship with respect to the parent device information storage unit 1H is prohibited.

  In the above-described embodiment, after the parent device 1 side sets (registers) the parent-child relationship, the parent-child relationship setting notification is transmitted to the parent device 2 side. The parent-child relationship is set (registered) to finish the process, but the parent-child relationship is determined for the parent device 2 that is determined to be set on the child device 1 side without immediately setting the parent-child relationship on the child device 1 side. After sending the settable notification and setting (registering) the parent-child relationship on the parent device 2 side that has received it, the parent-child relationship setting notification is sent to the child device 1 side. A parent-child relationship with the parent device 2 may be set (registered).

  The processing operations described above are performed as processing operations according to the programs of the CPU 1A in the slave unit 1 and the CPU 2A in the master unit 2. As a characteristic functional block for realizing this processing operation, the slave unit 1 is shown in FIG. As shown, a transmission message including all the parent device IDs stored in the parent device information storage area PAR of the parent device information storage unit 1H, the self ID stored in the child device ID storage unit 1G, and transmission data. When the transmission message transmission unit 11 that periodically transmits M and the parent-child relationship setting possibility notification A addressed to itself from the parent device 2 are received, the parent device information storage area PAR of the parent device information storage unit 1H It is checked whether or not there is an empty area in which the parent machine ID is not stored. If there is an empty area, it is added to the parent-child relationship setting availability notification A received in one of the empty areas. Information on the parent device including the parent device ID (parent device ID, communication quality, reception time) is stored, and the child device is added with its own ID addressed to the parent device 2 that is the transmission source of the parent-child relationship setting notification A A slave unit-side parent-child relationship setting unit 12 that transmits a parent-child relationship setting notification B that notifies the setting of the parent-child relationship on one side.

  Further, when the slave unit 1 receives the parent-child relationship setting enable notification A addressed to itself from the master unit 2, the master unit information is stored in the master unit information storage area PAR of the master unit information storage unit 1H. If there is no empty area, it is determined based on the communication quality whether one of the parent device information storage areas PAR can be used as an empty area. If it is determined that the information can be used as an area, the information of the parent device stored in the area is deleted and the parent device ID including the parent device ID added to the received parent / child relationship setting notification A is received. Information (base unit ID, communication quality, reception time) is stored, and the parent-child relationship on the handset side is set by adding its own ID to the base unit 2 that is the transmission source of the parent-child relationship setting enable notification A Slave unit that transmits parent-child relationship setting notification B Even if a predetermined time elapses after transmission of the parent-child relationship automatic change unit 14 and the transmission message M, a reception confirmation response C from the parent device 2 whose parent device ID is stored in the parent device information storage area PAR is sent. If not received, the parent device side parent-child relationship deleting unit 14 for deleting the parent device information stored in the parent device information storage area PAR is provided.

  Further, as shown in FIG. 17, the master unit 2 includes a transmission message receiving unit 21 that receives a transmission message M from the slave unit 1 and a received child unit as characteristic functional blocks that realize the processing operations described above. The base unit ID included in the transmission message M from the unit 1 is checked, and when the base unit ID does not include its own base unit ID, it is stored in the handset unit data storage area CAR of the handset unit data storage unit 2G. It is checked whether or not there is an empty area in which information of the slave unit is not stored. If there is an empty area, its own ID is added to the slave unit 1 that is the transmission source of the received transmission message M. If a parent-child relationship setting notification unit 22 that transmits a parent-child relationship setting notification A indicating that the parent-child relationship can be set, and a parent-child relationship setting notification B addressed to itself from the child device 1 are received, Slave unit of machine data storage unit 2G One of the empty area of over data storage area CAR, and a base-side child relationship setting unit 23 for storing the ID of the slave unit added to the parent-child relationship setting notification B received.

  In addition, the base unit 2 checks the base unit ID included in the received transmission message M from the mobile unit 1, and if the base unit ID includes its own ID, The included child device ID is checked, and if this child device ID is stored in the child device information storage area CAR, the transmission data included in the transmission message M is stored in the child device information storage area CAR. A reception confirmation response transmission unit 24 for transmitting a reception confirmation response C to the transmission source child device 1 of the transmission message M by adding its own ID, and transmission data from the child device 1 in the child device information storage area If the next transmission data to be stored in the child device information storage area CAR is not sent to the child device information storage area CAR even after a predetermined time has elapsed after being stored in the CAR, information on the child device stored in the child device information storage area is stored. Delete And a base-side parent-child relationship deleting section 25.

  The wireless communication system of the present invention is equipped with various facilities such as air conditioning equipment, crime prevention equipment, and lighting equipment as a wireless communication system that transmits and receives messages between a parent device and a child device having a bidirectional communication function. It can be used in buildings with large spaces.

  1 (1-1) ... Slave unit, 1A ... CPU, 1B ... ROM, 1C ... Sensing unit, 1D ... Communication control unit, 1E ... Sending unit, 1F ... Receiving unit, 1G ... Slave unit ID storage unit, 1H ... Parent Machine information storage unit, 1I: Parent candidate list storage unit, TA (TA1, TA2) ... Registered parent machine timeout counter, CAR (CAR1, CAR2, CAR3) ... Slave unit data storage area, 2 (2-1, 2- 2, 2-3) ... master unit, 2A ... CPU, 2B ... ROM, 2C ... communication control unit, 2D ... transmission unit, 2E ... reception unit, 2F ... master unit ID storage unit, 2G ... slave unit data storage unit, TB (TB1, TB2, TB3) ... registered child device timeout counter, PAR (PAR1, PAR2) ... parent device information storage area, LST ... parent candidate list, 11 ... transmission message transmission unit, 12 ... child device side parent-child relationship setting Part 13 Automatic change section, 14 ... Slave unit side parent-child relationship deletion unit, 21 ... Transmission message reception unit, 22 ... Parent-child relationship setting enable notification unit, 23 ... Master unit side parent-child relationship setting unit, 24 ... Reception confirmation response transmission unit, 25 … Parent-side parent-child relationship deletion part.

Claims (6)

In a wireless communication system that transmits and receives messages between a parent device and a child device having a bidirectional communication function,
The slave is
A parent device capable of setting a connection relationship between a parent and a child in a parent device information storage area in which at least identification information of the parent device is stored as a storage area of information on the parent device in which a connection relationship between the self and the parent and child is set A master unit information storage means having the maximum number of units,
Transmission message transmission means for periodically transmitting a transmission message including identification information of all the parent devices stored in the parent device information storage area, self identification information, and transmission data;
The base unit is
As the storage area for the slave unit information in which the connection relationship between the self and the parent is set, at least the slave unit data storage area for storing the identification information of the slave unit and the transmission data from the slave unit is set as the connection relationship between the self and the parent A handset data storage means having the maximum number of handset units capable of,
A transmission message receiving means for receiving a transmission message from the slave unit;
The identification information of the parent device included in the received transmission message from the child device is checked, and when the identification information of the parent device is not included in the identification information of the parent device, the child device data storage It is checked whether or not there is an empty area in which no slave information is stored in the area. If there is an empty area, the identification information of itself is addressed to the slave that is the transmission source of the received transmission message. And a parent-child relationship setting enable notification transmission means for transmitting a parent-child relationship setting enable notification indicating that the parent-child connection relationship can be set. The wireless communication system according to claim 1, wherein
The slave is
If a parent-child relationship setting possible notification addressed to itself is received from the parent device, it is checked whether there is an empty area in which information on the parent device is not stored in the parent device information storage area. Is stored in one of the empty areas, the identification information of the parent device added to the received notification that the parent-child relationship can be set is stored. A slave unit side parent-child relationship setting means for transmitting a parent-child relationship setting notification for adding identification information to notify the setting of the parent-child connection relationship on the slave unit side,
The base unit is
When the parent-child relationship setting notification addressed to itself is received from the child device, the identification information of the child device added to the received parent-child relationship setting notification is added to one of the empty areas of the child device information storage area. A wireless communication system comprising a parent device-side parent-child relationship setting means for storing. The wireless communication system according to claim 1, wherein
The base unit is
If the identification information of the parent device included in the received transmission message from the child device is checked and the identification information of the parent device is included in the identification information of the parent device, it is included in the transmission message. If the identification information of the slave unit is stored in the slave unit information storage area, the transmission data included in the transmission message is stored in the slave unit information storage area. And a reception confirmation response transmission means for transmitting a reception confirmation response by adding its own identification information to the slave unit that is the transmission source of the transmission message,
After storing the transmission data from the slave unit in the slave unit information storage area, if the next transmission data to be stored in the slave unit information storage area is not sent even after a predetermined time has passed, the slave unit information A parent device side parent-child relationship deleting means for deleting information of the child device stored in the storage area,
The slave is
When the reception confirmation response is not sent from the parent device whose identification information is stored in the parent device information storage area even after a predetermined time has elapsed after the transmission message is transmitted, the parent device information storage area A wireless communication system, comprising: a slave unit-side parent-child relationship deleting unit that deletes information on the master unit stored in the base station. The wireless communication system according to claim 1, wherein
The slave is
If a parent-child relationship setting possible notification addressed to itself is received from the parent device, it is checked whether there is an empty area in which no parent device information is stored in the parent device information storage area. If it does not exist, it is determined whether one of the parent device information storage areas can be used as an empty area based on information indicating a predetermined replacement condition, and it is determined that it can be used as an empty area. In this case, the base unit information stored in the area is deleted, the base unit identification information added to the received parent-child relationship settable notification is stored, and the transmission source of the parent-child relationship settable notification is stored. A slave-side parent-child relationship automatic change means for sending a parent-child relationship setting notification for notifying that a parent-child connection relationship on the slave device side is set by adding its own identification information to the parent device,
The base unit is
When the parent-child relationship setting notification addressed to itself is received from the child device, the identification information of the child device added to the received parent-child relationship setting notification is added to one of the empty areas of the child device information storage area. A wireless communication system comprising a parent device-side parent-child relationship setting means for storing. The wireless communication system according to claim 4, wherein
The slave-side parent-child relationship automatic changing means is:
Whether or not one of the parent device information storage areas can be used as an empty area based on information indicating communication quality at the time of reception of the received parent-child relationship setting availability notification as information indicating the predetermined replacement condition A wireless communication system characterized by determining whether or not. The wireless communication system according to claim 5, wherein
The base unit information storage means
In the parent device information storage area, as the information of the parent device, at least the communication quality at the time of reception of the parent device identification information and the parent-child relationship setting possible notification from the parent device,
The slave-side parent-child relationship automatic changing means is:
Of the parent device information storage area, the area with the worst communication quality stored is selected as a usable empty area candidate, and the parent-child relationship setting with the best communication quality among the received parent-child relationship setting notification is received. The notification is selected as a parent-child relationship setting available notification from the replacement candidate parent device, and the communication quality of the parent-child relationship setting available notification from the replacement candidate parent device is better than the communication quality stored in the empty area candidates. In this case, it is determined that the predetermined replacement condition is satisfied, and information on the parent device stored in the empty area candidate is deleted and added to the parent-child relationship setting notification from the replacement candidate parent device. A wireless communication system characterized by storing at least the communication quality at the time of receiving the identification information of the parent device and the notification that the parent-child relationship can be set.

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