JP2013126019A - Communication route setting method for radio communication system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a communication route setting method for a radio communication system which can easily establish a communication route of radio communication performed between a master station and a plurality of slave stations.SOLUTION: A communication route 3a between a master station 1 and five slave stations 2 set in a building 4 is temporarily set and a setting process and a testing process in a repetitive process of test communication are repeated at ten minute intervals between units connected to the communication route 3a among the master station 1 and the respective slave stations 2. After that, a personal computer 3 is connected to the master station 1 to allow the personal computer 3 to acquire the result of the test communication and it is determined whether there is a unit which cannot perform communication between the master station 1 and the respective slave stations 2 on the basis of the acquired result of the test communication. When it is determined that there is a unit which cannot perform communication, a communication route other than the communication route 3a is calculated and displayed. When it is determined that there is no unit which cannot perform communication, the communication route 3a is actually set as the communication route between the master station 1 and the respective slave stations 2.

Description

  The present invention relates to a communication path setting method for a wireless communication system that sets a communication path for wireless communication performed between a master station and a plurality of slave stations provided in a building.

  As one of the prior arts of a communication path setting method of this type of wireless communication system, a sensor terminal arrangement support device for a wireless sensor network constructed by a plurality of sensor terminals relaying communication with each other is known. (For example, refer to Patent Document 1). Each sensor terminal constituting such a wireless sensor network has a wireless function for transmitting and receiving radio waves, a counter function for counting the number of received communication success rate measurement data, and a counting function for counting received electric field strength. ing.

  The above-described sensor terminal arrangement support method for the wireless sensor network of the above-described technology supports all sensor terminals to secure multiple routes by adjusting the position of each sensor terminal in order to construct a stable wireless sensor network. ing. Specifically, in the sensor terminal arrangement support method, a plurality of sensor terminals are installed in the monitoring target area in advance, and each sensor terminal relays communication with each other, thereby collecting a large number of sensor data. A sensor network is temporarily built.

  Then, the received electric field strength and communication success rate of all sensor terminals are measured according to instructions from the monitored base station, and the measured data is collected using the data relay / collection function of each sensor terminal. The measurement data between the sensor terminals is displayed in a matrix based on the above, and a network configuration diagram showing the connection state between the sensor terminals is created and displayed as a route. Accordingly, the user can easily understand the connection status of the wireless sensor network by looking at the network configuration diagram displayed as a route, and can grasp whether all the sensor terminals have secured multiple routes.

  Here, a wireless communication system built in a building or the like includes a master station that transmits and receives radio waves and a plurality of slave stations that transmit and receive radio waves to and from the master station. Some wireless communication is performed between a station and a plurality of slave stations. Even when setting a communication path for wireless communication performed between a master station and each slave station in such a wireless communication system, it is possible to apply the above-described conventional sensor terminal arrangement support device for a wireless sensor network. Conceivable.

JP 2010-45701 A

  However, the sensor terminal arrangement support device of the conventional wireless sensor network disclosed in Patent Document 1 sets a communication path for wireless communication so that each sensor terminal becomes a relay station of another sensor terminal as described above. Therefore, when setting the communication path for wireless communication between the master station and each slave station, install an extra relay station in addition to maintaining the communication function between the master station and each slave station. Therefore, it takes a lot of time to install this relay station. If a communication path for wireless communication performed between the master station and each slave station is set by applying the sensor terminal arrangement support device of the wireless sensor network of the prior art, the master station and a plurality of slave stations Since multiple routes are inevitably formed in each unit, a radio communication system composed of a master station and a plurality of slave stations becomes complicated, and the construction cost of the radio communication system becomes high. As described above, the sensor terminal arrangement support device of the wireless sensor network of the prior art is not suitable for construction of a wireless communication system including a parent station and a plurality of child stations, and between the parent station and the plurality of child stations. There is a demand for a method that can easily construct a communication path for wireless communication to be performed.

  The present invention has been made based on the actual situation of the prior art as described above, and an object thereof is a wireless communication system capable of easily constructing a communication path for wireless communication performed between a master station and a plurality of slave stations. It is to provide a communication path setting method.

  In order to achieve the above object, a communication path setting method of a wireless communication system of the present invention is provided in a building, and a master station that transmits and receives radio waves, and a radio station that transmits and receives radio waves to the master station. In a communication path setting method of a wireless communication system, which is applied to a wireless communication system including a plurality of slave stations that perform transmission and reception and sets a communication path of wireless communication performed between the master station and the plurality of slave stations A first step of temporarily setting communication paths between the master station and the plurality of slave stations, and a unit connected to the communication path temporarily set in the first step among the master station and the plurality of slave stations Acquired in the third step, a second step of performing test communication between the two, a third step of connecting a personal computer to the master station and acquiring the result of the test communication performed in the second step on the personal computer. Based on the results of the test communication When it is determined that there is a unit that cannot communicate in the fourth step, and a fourth step that determines whether there is a unit that cannot communicate between the station and each of the slave stations, it is provisionally set in the first step When a communication path other than the communication path calculated and displayed is determined and there is no unit that cannot communicate in the fourth step, the communication path temporarily set in the first step is determined as the master station and each child. And a fifth step of setting this as a communication path with a station, and the test communication of the second step sets one of the master station and the plurality of slave stations as a radio transmission side unit, A setting step for setting the rest as a radio receiving unit, a testing step for performing test communication between the transmitting unit set in the setting step and each receiving unit, the master station and the plurality of units All of the slave stations are It is characterized in that it comprises the setting step and the testing step to sequentially set a test communication to the machine is carried out and repeating step of repeating at a predetermined time interval.

  In the present invention configured as described above, when setting a communication path for wireless communication performed between a master station and a plurality of slave stations, first, a communication path between the master station and the plurality of slave stations is temporarily set. Next, test communication is performed between the master station and a plurality of slave stations connected to the temporarily set communication path. At this time, one of the master station and the plurality of slave stations is set as a radio transmission side unit, and the rest is set as a radio reception side unit, and the set transmission side unit and each reception side unit are set. Test communication with Unit No. After that, when a predetermined time elapses, another one of the master station and the plurality of slave stations is newly set as a radio transmission side unit, and the rest is set as a radio reception side unit. Test communication is performed between the transmitting machine and each receiving machine. In this way, one of the master station and the plurality of slave stations is selected as a radio transmission device at every predetermined time interval, and all of the master station and the plurality of slave stations are sequentially assigned to the radio transmission device. Test communication is performed until it is set. Accordingly, it is possible to sufficiently check the connection status of wireless communication performed between the master station and each slave station on a communication path temporarily set in advance.

  Next, when the test communication is completed for the temporarily set communication path, a personal computer is connected to the master station, the result of the test communication is acquired in this personal computer, and the master station is obtained based on the acquired test communication result. And there is a unit that cannot communicate with each slave station. At this time, if it is determined that there is a unit that cannot communicate between the master station and each slave station, a communication path other than the temporarily set communication path is calculated and displayed. If it is determined that there is no unit that cannot communicate with each other, the temporary communication path is set as the communication path between the master station and each slave station, so that the master station and each slave can be secured in order to secure the communication path. It is possible to suppress the installation of an extra relay station between stations, and it is possible to easily construct a communication path for wireless communication performed between the master station and a plurality of slave stations.

  In the communication path setting method of the wireless communication system according to the present invention, in the above invention, the fourth step is based on the result of the test communication acquired in the third step, and each unit of the master station and the plurality of slave stations. It is characterized in that whether or not communication is possible is displayed on the personal computer. With this configuration, it is possible to quickly grasp from the screen of the personal computer which communication unit is not connected among the master station and the plurality of slave stations with respect to the communication path temporarily set in the first step. Can do.

  The communication route setting method for a wireless communication system according to the present invention is characterized in that, in the invention, the communication route temporarily set in the first step is set in advance in the personal computer. With this configuration, the location of the master station and multiple slave stations is determined from the building drawings, etc., and the personal computer is set in advance by considering the communication path between the master station and each slave station. When connected to a station, setting of a communication path between the master station and a plurality of slave stations can be started quickly, and work efficiency can be improved.

  In the communication path setting method for a wireless communication system according to the present invention, in the invention, the second step is a step of sending the result of test communication in each test step to the slave station each time the test step is performed in the repetition step. And the result is transmitted to the master station. With this configuration, since the test communication results of each test process are stored in the master station and each slave station, when temporarily setting the communication path between the master station and each slave station in the first process, The result of the test communication can be referred to. Thereby, it is possible to ensure high convenience in setting a communication path for wireless communication performed between the master station and each slave station.

  In the communication path setting method of the wireless communication system of the present invention, after performing test communication between units connected to the communication path temporarily set in the first step among the master station and the plurality of slave stations provided in the building, Based on the result of this test communication, it is determined whether there is a unit that cannot communicate between the master station and each slave station. When it is determined that there is a unit that cannot communicate between the master station and each slave station, a communication path other than the communication path temporarily set in the first step is calculated and displayed. When it is determined that there is no unit that cannot communicate with the station, the communication path is secured by setting the communication path temporarily set in the first step as the communication path between the master station and each slave station. Therefore, it is possible to suppress the installation of an extra relay station between the master station and each slave station, and to easily construct a communication path for wireless communication performed between the master station and a plurality of slave stations. Can do. As a result, the construction cost of the wireless communication system can be reduced without complicating the wireless communication system composed of the master station and the plurality of slave stations.

It is a figure which shows the structure of the radio | wireless communications system with which one Embodiment of the communication path | route setting method concerning this invention is applied. It is a flowchart explaining the structure of one Embodiment of the communication path | route setting method of the radio | wireless communications system which concerns on this invention. It is a figure which shows an example of the communication path temporarily set in the 1st process with which this embodiment shown in FIG. 2 was equipped. It is a figure explaining the test communication of the 2nd process with which this embodiment shown in FIG. 2 was equipped. It is a figure explaining the result of the test communication displayed on a personal computer in the 4th process with which this embodiment shown in FIG. 2 was equipped.

  DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment for implementing a communication path setting method of a wireless communication system according to the present invention will be described based on the drawings.

  An embodiment of a communication path setting method of a wireless communication system according to the present invention is provided in a building 4 as shown in FIG. 1, for example, and is provided in a building 4 and a building 4. Is applied to a wireless communication system including a plurality of slave stations 2 that transmit and receive radio waves. Specifically, in the wireless communication system according to the present embodiment, for example, the building 4 has a three-story structure, and one room is provided on the first floor, two on the second floor, and two on the third floor. . One master station 1 is installed on the first floor of the building 4.

  For example, the master station 1 calculates a plurality of state quantities including the amount of light heat such as the power consumption, the amount of water used, the amount of gas used, etc. of the entire building 4. The slave station 2 measures each of a plurality of state quantities including the amount of light heat such as the power consumption, the amount of water used, and the amount of gas used in each room of the building 4 and transmits the measured state quantities to the master station 1. Yes. Therefore, there are two slave stations 2 in the vicinity of the room on the first floor of the building 4, one in the vicinity of each room on the second floor of the building, and one in the vicinity of each room on the third floor of the building. A total of 2 units are installed.

  Here, for convenience, the unit number is assigned to the master station 1 and the five slave stations 2 of the building 4, for example, the master station 1 on the first floor of the building is the 0th unit, and each slave station 2 is the 1st to 5th unit. To do. In the master station 1 and the five slave stations 2, a communication path for wireless communication is set for transmitting and receiving radio waves between each connected unit as described later. The wireless communication path is set by using a personal computer 3 for performing various settings of the master station 1 and the slave station 2 for maintenance, and connecting the personal computer 3 to the master station 1 when necessary. To do.

  Next, the configuration of an embodiment of the communication path setting method of the wireless communication system described above according to the present embodiment will be described based on the flowchart of FIG.

  In this embodiment, first, the master station 1 is installed on the first floor of the building 4 and the slave station 2 of No. 5 is installed in the vicinity of a measurement point such as a power meter or a water meter near the room on the first floor. Then, the slave station 2 of Unit 2 and the slave station 2 of Unit 3 are installed in the vicinity of the measurement points such as power meters and water meters in the vicinity of each room on the second floor of the building 4, and further on the third floor of the building 4. A slave station 2 of Unit 1 and a slave station 2 of Unit 4 are installed near measurement points such as a power meter and a water meter in the vicinity of each room (step (hereinafter referred to as S) 1).

  The present embodiment includes a first step of temporarily setting communication paths between the master station 1 and the five slave stations 2, and the communication path 3a temporarily set in the first process as shown in FIG. For example, it is preset in the personal computer 3. Specifically, the communication path 3a stored in the personal computer 3 includes a master station 1 of the 0th unit, a slave station 2 of the 1st unit, a slave station 2 of the 2nd unit, a slave station 2 of the 3rd unit, and a slave station of the 5th unit. 2 are connected to each other. Then, the slave station 2 of the fourth machine is connected to the slave station 2 of the first machine.

  For this reason, the master station 1 of Unit 0 performs wireless communication by transmitting and receiving radio waves to and from the slave station 2 of Unit 1, the slave station 2 of Unit 2, the slave station 2 of Unit 3, and the slave station 2 of Unit 5. I have to. In addition, the master station 1 of the No. 0 unit performs radio communication by transmitting and receiving radio waves to and from the slave station 2 of the No. 4 unit via the slave station 2 of the No. 1 unit. Therefore, since the communication path 3a of the wireless communication having such a connection relationship is stored in the personal computer 3, the communication path 3a of the wireless communication is connected by connecting the personal computer 3 to the master station 1 on the first floor of the building 4. Are automatically provisionally set between the master station 1 and each slave station 2 (S2).

  This embodiment includes a second process of performing test communication between the master station 1 and the five slave stations 2 between the units connected to the communication path 3a temporarily set in the first process. The test communication in the second step is a setting step of setting one of the master station 1 and the five slave stations 2 as a unit on the radio wave transmitting side, and setting the rest as a unit on the radio wave receiving side, A test process in which test communication is performed between the transmission-side machine set in the setting process and each reception-side machine, and all of the master station 1 and the five slave stations 2 are sequentially transmitted to the radio-wave transmission side machine. The setting process and the test process include a repetition process that repeats the setting process and the test process every predetermined time interval, for example, every 10 minutes so that the test communication is performed. Furthermore, the second process updates the result of the test communication of each test process at the slave station 2 and transmits the result to the master station 1 every time the test process is performed in the repetition process.

  That is, the sequence of the test communication is the transmission of radio waves performed between the master station 1 of the 0th unit and the slave station 2 of the 1st to 5th units every 10 minutes (N = 0, 1, 2,...) Switching is performed sequentially and continuously as shown in FIG. For example, first, set the master station 1 of unit 0 as the unit on the transmission side of the radio wave, and set the remaining slave units 2 of unit 1-5 as the units of the reception side of the radio wave. Radio waves are transmitted to the slave stations 2 of Units 1-5. At this time, reception / reception of radio waves received by each slave station 2, reception sensitivity, and connection accuracy are measured, and the measurement results are updated by each slave station 2 and the results are transmitted to the master station 1. In FIG. 4, white circles ◯ represent radio wave transmission side units, and black circles ● represent radio wave reception side units.

Here, the reception sensitivity is expressed by the equation (1), and is updated every time a set radio wave receiving side unit receives radio waves from a radio wave transmitting side unit. It should be noted that in order to make the reception sensitivity tolerable to some extent sudden noise, it is calculated using the past reception sensitivity.

In this equation (1), RFN represents the reception sensitivity after update, RFO represents the reception sensitivity before update, and RFW represents the received reception sensitivity.

The connection accuracy is a coefficient, which is expressed by Expression (2), and is calculated and updated every time the set radio wave receiving side unit receives radio waves from the radio wave transmitting side unit. This connection accuracy needs to be calculated so as to be able to determine whether or not continuous communication is possible, in order to cope with fluctuations that occur in the wireless environment.

In this equation (2), LN represents the connection accuracy after the update, LO represents the connection accuracy before the update, and R represents whether reception is possible (1 or 0).

  Next, the slave station 2 of the first unit is set as a radio transmission side unit, and the remaining master station 1 of the zeroth unit and the slave stations 2 of unit 2-5 are set as the radio reception side units. Radio waves are transmitted from the slave station 2 of the unit No. 2 to the master station of the unit 0 and each slave station 2 of the unit 2-5. At this time, the radio wave reception availability, reception sensitivity, and connection accuracy received by the master station 1 of Unit 0 and each slave station 2 of Units 2 to 5 are measured in the same manner as described above, and these measurement results are measured for each slave station. The station 2 updates and transmits the result to the master station 1.

  Next, when 10 minutes have elapsed from the measurement of radio wave reception availability, reception sensitivity, and connection accuracy at the master station 1 of Unit 0 and the slave stations 2 of Units 2 to 5, transmission of radio waves to the slave station 2 of Unit 2 And set the remaining master station 1 of Unit 0, slave station 2 of Unit 1, and slave station 2 of Units 3 to 5 as the receiver of the radio wave reception side. To the master station 1 of the 0th unit, the slave station 2 of the 1st unit, and the slave stations 2 of the 3rd to 5th units. At this time, the reception capability, reception sensitivity, and connection accuracy of radio waves received by the master station 1 of Unit 0, the slave station 2 of Unit 1, and the slave stations 2 of Units 3 to 5 are measured in the same manner as described above. These measurement results are updated in each slave station 2 and the results are transmitted to the master station 1.

  Next, when 10 minutes have elapsed since the measurement of radio wave reception availability, reception sensitivity, and connection accuracy at the master station 1 of Unit 0, the slave station 2 of Unit 1, and the slave stations 2 of Units 3 to 5, Set the slave station 2 of the unit as the transmitter on the radio wave transmission side, and set the remaining master station 1, the slave station 2 of the 1st unit, the slave station 2 of the 2nd unit, and the slave station 2 of the 4th unit 5 The radio is transmitted from the slave station 2 of the third machine to the master station 1 of the zeroth machine, the slave station 2 of the second machine, and each of the slave stations 2 of the fourth and fifth machines. At this time, whether or not the radio wave received by the master station 1, the slave station 2 of the Unit 1, the slave station 2 of the Unit 2, and the slave stations 2 of the Unit 5 and 5, the reception sensitivity, and the connection accuracy are the same as described above. The measurement results are updated by each slave station 2 and the results are transmitted to the master station 1.

  Next, when 10 minutes elapses from the measurement of radio wave reception availability, reception sensitivity, and connection accuracy at the master station 1, the slave station 2, the slave station 2, and the slave stations 2, 4 and 5 Set the slave station 2 of unit 4 as the transmitter on the radio wave transmission side, and set the remaining master station 1 of unit 0, slave station 2 of unit 1-3, and slave station 2 of unit 5 on the radio wave reception side Set to Unit No. 4 to transmit radio waves from Unit 2 slave station 2 to Unit 0 master station 1, Unit 1-3 slave station 2, and Unit 5 slave station 2. At this time, the reception capability, reception sensitivity, and connection accuracy of the radio waves received by the master station 1 of Unit 0, the slave station 2 of Units 1-3, and each slave station 2 of Unit 5 are measured in the same manner as described above. These measurement results are updated in each slave station 2 and the results are transmitted to the master station 1.

  Then, when 10 minutes have passed since the reception of radio waves, the reception sensitivity, and the connection accuracy at the master station 1 of the 0th unit, the slave station 2 of the 1st to 3rd units, and the respective slave stations 2 of the 5th unit, the children of the 5th unit Station 2 is set as the radio transmission side unit, and the remaining master unit 1 of unit 0 and slave units 2 of unit 1 to 4 are set as the reception units of radio waves. Radio waves are transmitted to the master station 1 of the unit No. 1 and each slave station 2 of the unit 1-4. At this time, whether or not the radio wave received by the master station 1 of Unit 0 and each slave station 2 of Units 1 to 4 is received, the reception sensitivity, and the connection accuracy are measured in the same manner as described above, The slave station 2 updates and transmits the result to the master station 1 (S3).

  In the present embodiment, the third step of connecting the personal computer 3 to the master station 1 and acquiring the result of the test communication performed in the second step on the personal computer 3, and the result of the test communication acquired in the third step The fourth step of determining whether there is a machine that cannot communicate between the master station 1 and each slave station 2 based on the above, and the first process when it is determined that there is a machine that cannot communicate in this fourth process When a communication path other than the temporarily set communication path 3a is calculated and displayed in step S4 and it is determined that there is no unit that cannot communicate in the fourth step, the communication path 3a temporarily set in the first step is designated as the master station 1. And a fifth step of performing the main setting as a communication path between each slave station 2.

  Specifically, after the second step is performed in step S3, that is, between the units connected to the communication path 3a temporarily set in the first step among the master station 1 and the five slave stations 2. For example, after about one week has passed, the personal computer 3 is connected to the master station 1 of the first unit, and the information collected in the master station 1 is acquired (S4). After that, from the result of the test communication of the acquired information, the communication path 3a temporarily set in step S2 is displayed by displaying on the personal computer 3 whether or not communication between each of the master station 1 and the five slave stations 2 is possible. Processing is performed (S5), and it is determined whether or not there is a machine that cannot communicate between the master station 1 and each slave station 2 with respect to the communication path 3a (S6).

  At this time, the determination process of the communication path 3a is displayed as the communication path determination 3b on the upper left side of the screen of the personal computer 3 as shown in FIG. 5, for example, and this communication path determination 3b includes the master station 1, each slave station 2, and When communication is possible, the communication path 3a is indicated by a solid line, and when communication is not possible, the communication path 3a is indicated by a dotted line or wirelessly.

  On the lower side of the screen of the personal computer 3, the master station 1 of the 0th unit and the slave station 2 of the 1st to 5th units are displayed in a row as the transmitting side unit. A matrix display 3d is displayed in which the slave stations 2 of No. 1 to No. 5 are arranged in a column as receiving-side machines. In each column of this matrix display 3d, the upper row shows the reception rate of the receiving side's radio waves with respect to the sending side unit, the middle row shows the receiving sensitivity of the receiving side's radio waves with respect to the transmitting side unit, and the lower row shows the sending side's unit. And the connection accuracy between the receiver and the receiver.

  The matrix display 3d indicates a column corresponding to a case where communication can be performed between the unit set on the transmission side and the unit set on the reception side of the master station 1 and each slave station 2, with a thick frame, When communication is not possible between the unit set on the transmission side and the unit set on the reception side, it is indicated in a thin frame. In this embodiment, for example, when the reception rate in each column of the matrix display 3d is 90% or more, the reception sensitivity is −100 dBm or more, and the connection accuracy is 0.7 or more, the unit set on the transmission side and the reception side It is processed as if communication with the set unit is possible, and if any one of these conditions is not met, communication between the unit set on the sending side and the unit set on the receiving side is possible It is to be processed as not.

  In the communication path determination 3b in the present embodiment, the communication path 3a between the master station 1 of the No. 0 unit and the slave station 2 of the No. 1 and 2 units is indicated by a solid line. The slave station 2 can communicate with each other. At this time, in the matrix display 3d, the reception rate of each column of the slave station 2 of the 1st and 2nd units set as the reception-side unit is 98.5 respectively for the 0th master station set as the transmission-side unit. %, 96.5%, 90% or more, reception sensitivity is -94.3 dBm, -84.3 dBm, -100 dBm or more, and connection accuracy is 0.78, 0.88, 0.7 or more, respectively. Each of these fields is displayed with a thick frame.

  Further, in communication path determination 3b, the communication path 3a between the first slave station 2 and the fourth slave station 2 is also indicated by a solid line, so that the first slave station 2 communicates with the fourth slave station 2 mutually. Is possible. At this time, in the matrix display 3d, the reception rate in the column of the slave station 2 of the fourth unit set as the receiver unit of the first slave station 2 set as the transmitter unit of the transmission side is 99.5%, which is 90 %, The reception sensitivity is -84.3 dBm, -100 dBm or more, and the connection accuracy is 0.75, which is 0.7 or more. This field is displayed in a thick frame.

  On the other hand, since the communication path 3a between the master station 1 of unit 0 and the slave station 2 of unit 3 is indicated by a dotted line in the communication path determination 3b, the master station 1 of unit 0 can communicate with the slave station 2 of unit 3 Not. At this time, in the matrix display 3d, the receiving rate in the column of the slave station 2 of the third unit set as the receiving unit is 54.7, which is 90%, with respect to the master station 1 of the 0th unit set as the transmitting unit. Hereinafter, the reception sensitivity is −119.9 dBm to −100 dBm or less, the connection accuracy is 0.43 to 0.7 or less, and none of the above-described conditions is satisfied, and this column is displayed in a narrow frame.

  Further, in the communication path determination 3b, the communication path 3a between the master station 1 of the 0th unit and the slave station 2 of the 5th unit is described wirelessly, so that the master station 1 of the 0th unit can communicate with the slave station 2 of the 5th unit. Not. At this time, in the matrix display 3d, the receiving rate in the column of the slave station 2 of the fifth unit set as the receiving unit is 0% with respect to the master station 1 of the 0th unit set as the transmitting unit. The connection accuracy is “−”, and the master station 1 of the 0th unit has never communicated with the slave station 2 of the 5th unit, and measurement results of reception sensitivity and connection accuracy are not obtained.

  Therefore, in this embodiment, since it is determined that there is a unit that cannot communicate between the master station 1 and each slave station 2 with respect to the communication path 3a in step S6, other than the communication path 3a temporarily set in step S2. Is calculated by a known calculation method, for example, and displayed as the optimum route 3c in the center of the screen of the personal computer 3 (S7). Then, it is determined whether there is a machine that cannot communicate between the master station 1 and each slave station 2 with respect to the optimum route 3c (S8). At this time, if it is determined that there is a unit that cannot communicate between the master station 1 and each slave station 2 with respect to the optimum route 3c, another new slave station is additionally installed in the building 4 as a relay station. Then (S9), the process returns to the operation of step S2.

  In step S6, it is determined that there is no unit that cannot communicate with the communication path 3a between the master station 1 and each slave station 2, that is, the master station 1 can communicate with each of the five slave stations 2. In this case, the communication path 3a is set as the communication path between the master station 1 and each slave station 2, and the communication path of the wireless communication performed between the master station 1 and each slave station 2 in this embodiment is set. Finish the setting. In step S8, it is determined that there is no unit that cannot communicate between the master station 1 and each slave station 2 with respect to the optimum path 3c, that is, the master station 1 can communicate with each of the five slave stations 2. In this case, the optimum path 3c is set as a communication path between the master station 1 and each slave station 2 (S10), and wireless communication performed between the master station 1 and each slave station 2 in the present embodiment is performed. Complete the communication path setting.

  According to the present embodiment configured as described above, when setting a communication path for wireless communication performed between the master station 1 and the five slave stations 2 installed in the building 4, the parent station 1 is set in step S2. After temporarily setting the communication path 3a between the station 1 and each slave station 2, in step S3, test communication is performed between the units connected to the communication path 3a, and the setting process and the test process are repeated in this test communication. By repeating the process every 10 minutes, it is possible to sufficiently check the connection status of the wireless communication performed between the master station 1 and each slave station 2 with respect to the communication path 3a temporarily set in advance.

  If it is determined in step S6 that there is no unit that cannot communicate between the master station 1 and each slave station 2 based on the result of the test communication, the temporarily set communication path 3a is set to the master station 1 and each slave station. Even if it is determined that there is a unit that cannot communicate between the master station 1 and each slave station 2 in step S6, it is temporarily set in step S7. A communication path other than the communication path 3a is calculated as the optimum path 3c, and the optimum path 3c is set as a communication path between the master station 1 and each slave station 2 in step S10, so that the master path can be secured. The installation of an extra relay station between the station 1 and each slave station 2 can be suppressed, and a communication path for wireless communication performed between the master station 1 and the five slave stations 2 can be easily constructed. can do. Thereby, the construction cost of a radio | wireless communications system can be suppressed, without complicating the radio | wireless communications system which consists of the main | base station 1 and the five slave stations 2. FIG.

  Further, according to the present embodiment, the communication path determination 3b and the matrix display 3d are transmitted to the personal computer 3 from the result of the test communication acquired in step S4 to the personal computer 3 as to whether or not communication is possible between each unit. By displaying, from the screen of the personal computer 3, it can be quickly determined which communication unit between the master station 1 and the five slave stations 2 is not connected to the communication path 3a temporarily set in step S2. I can grasp it. Thereby, it is possible to efficiently construct a radio communication system including the master station 1 and the five slave stations 2.

  In this embodiment, since the communication path 3a temporarily set in step S2 is set in the personal computer 3 in advance, when the personal computer 3 is connected to the master station 1, the master station 1 and the five slave stations 2 The communication path can be set up quickly. That is, the structure of the building 4 and the positions of measurement points such as a power meter and a water meter in the vicinity of the room on each floor are grasped in advance by a drawing or the like, or the master station 1 and the slave station 2 set in the past in the building 4 By referring to the communication path with the PC 3 and setting it in the personal computer 3, a result with high reception rate and connection accuracy is obtained between the master station 1 and each slave station 2 in the test communication of the set communication path 3 a. Therefore, it is possible to increase the efficiency of the wireless communication communication path setting operation performed between the master station 1 and each slave station 2.

  Further, in this embodiment, every time the setting process and the test process are repeated every 10 minutes in step S3, the results of the reception rate, the reception sensitivity, and the connection accuracy in the test communication of each test process are obtained for each slave station 2. Since the result is stored in the master station and each slave station 2 by transmitting the result to the master station 1, the communication path 3a between the master station 1 and each slave station 2 is connected to the personal computer. The result can be referred to when temporarily setting to 3. In addition, when the personal computer 3 is connected to the master station 1, the results of the test communication in each test process are automatically taken into the personal computer 3, so that these results can be backed up in the personal computer 3. . Thereby, it is possible to ensure high convenience in setting a communication path for wireless communication performed between the master station 1 and the five slave stations 2.

  In the above-described embodiment, the case where the building 4 has a three-story structure and one master station 1 is installed on the first floor of the building 4 is described. For example, a structure other than a three-story structure may be used, and a plurality of master stations 1 may be installed on other floors of the building 4. In addition, the case where the slave station 2 is installed on the first floor of the building 4, two on the second floor of the building 4, and two on the third floor of the building 4 has been described. For example, a different number of 2 may be installed on each floor of the building 4 as described above. Furthermore, although this embodiment demonstrated the case where the time interval which repeats the setting process and test process in the repetition process of test communication was set to 10 minutes, it is not restricted to this case and a setting process and a test process are repeated. You may set the time interval to perform to other time.

1 Master station 2 Slave station 3 Personal computer 4 Building

Claims (4)

Applied to a wireless communication system provided in a building and transmitting and receiving radio waves, and a plurality of slave stations provided in the building and transmitting and receiving radio waves to and from the parent station, In a communication path setting method of a wireless communication system for setting a communication path of wireless communication performed between the plurality of slave stations,
A first step of temporarily setting communication paths between the master station and the plurality of slave stations;
A second step of performing test communication between units connected to the communication path temporarily set in the first step among the master station and the plurality of slave stations;
A third step of connecting a personal computer to the master station and obtaining the result of the test communication performed in the second step on the personal computer;
A fourth step of determining whether there is a unit that cannot communicate between the master station and each of the slave stations based on the result of the test communication acquired in the third step;
When it is determined that there is a unit that cannot communicate in the fourth step, a communication route other than the communication route temporarily set in the first step is calculated and displayed, and there is no unit that cannot communicate in the fourth step. And a fifth step of permanently setting the communication path temporarily set in the first step as a communication path between the master station and each of the slave stations when determined.
In the test communication of the second step, one of the master station and the plurality of slave stations is set as a radio transmission side unit, and the rest is set as a radio reception side unit. A test process for performing test communication between the transmitting-side machine set in the setting process and each receiving-side machine, and all of the master station and the plurality of slave stations are sequentially set as radio wave transmitting-side machines. A communication path setting method for a wireless communication system, comprising: a step of repeating the setting step and the test step at predetermined time intervals so that test communication is performed. The communication path setting method for a wireless communication system according to claim 1,
In the fourth step, the personal computer displays whether or not communication is possible between each of the master station and the plurality of slave stations from the result of the test communication acquired in the third step. System communication path setting method. The communication path setting method for a wireless communication system according to claim 1 or 2,
A communication path setting method for a wireless communication system, wherein the communication path temporarily set in the first step is set in the personal computer in advance. In the communication path setting method of the radio | wireless communications system of any one of Claim 1 thru | or 3,
The second step is characterized in that each time the test step is performed in the repetition step, the result of test communication of each test step is updated in the slave station and the result is transmitted to the master station. A communication path setting method for a wireless communication system.

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