JP2008061079A - Wireless system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a wireless system which can improve communication reliability by using sub-wireless stations to share control processing conventionally processed by a parent wireless station so that a communication load for the parent wireless station can be reduced and a wireless channel can be assigned to a number of sub-parent wireless stations for a child wireless station to enable communication even when there are many child wireless stations. <P>SOLUTION: In the wireless system, the sub-parent wireless station 15 is arranged between a contact device or meter-connected child wireless station 13 and the parent wireless station 12. The parent wireless station 12 communicates with a center unit 11 and the sub-parent wireless station 15 and the child wireless station 13 communicates with the sub-parent wireless station 15. The parent wireless station 12 manages the sub-parent wireless station 15 and performs data transfer to/from the sub-parent wireless station 15 so that batch communication can be performed by the sub-parent wireless station 15 to read the meter of the child wireless station 13. The sub-parent wireless station 15 divides and manages the child wireless station 13 in a communication range, arranges data from the child wireless station 13 and then sends it to the parent wireless station 12. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a radio system, and in particular, a plurality of sub-master radio devices are provided between a master radio device and a slave radio device, the master radio device communicates with a center device and a sub-master radio device, and contacts devices and meters are connected. The present invention relates to a radio system in which a slave radio communicates with a sub-master radio.

In the communication between the main radio and the sub radio, if the distance between each other is long and accurate communication is not possible due to the reflection of the radio from the building or the influence of noise, etc., a repeater was put in between (patented) Reference 1).
JP 2006-48459 A

  In the case of a repeater, just send and receive information from the master radio to the slave radio as it is, and the master radio is compatible with the center unit, with the repeater, with the slave radio, etc. Complex processing is required.

  In the present invention, a secondary master radio is provided between a master radio and a slave radio, the master radio communicates with a center device and a plurality of secondary master radios, and a slave radio connected with a contact device or meter is a secondary radio. Since the wireless system communicates with the parent wireless device, even if the number of child wireless devices becomes enormous, the processing conventionally controlled by the parent wireless device is divided into multiple sub wireless devices. The purpose is to improve communication reliability by reducing the burden of communication processing and enabling communication by changing the radio channel to a plurality of sub-master radios for one slave radio.

  In order to solve the above-described problems, the present invention provides a plurality of sub-master radio devices between a slave radio device and a master radio device to which contact devices or meters are connected, and the master radio device includes a center device and the sub-master device. In the wireless system in which the slave radio communicates with the sub-master radio, the master radio manages the sub-master radio, and transmits and receives data to and from the sub-master radio. The sub-master radio is provided with means for collectively performing communication such as meter reading of the slave radio, and each of the plurality of sub-master radios is capable of communicating with all the slave radios. A wireless system comprising means for dividing and managing, and means for organizing data from a managed child radio and transmitting data to the parent radio.

  Further, the present invention provides a plurality of sub-master radios between a slave radio and a master radio connected to a contact device or meter, the master radio communicates with a center device and the sub-master radio, In a radio system in which a slave radio communicates with the sub-master radio, the master radio manages the sub-master radio, and transmits / receives data to / from the sub-master radio to the sub-master radio. A unit for performing communication such as meter reading of a slave unit radio at a time, and the plurality of sub-master radios each manage the slave radio units in duplicate, and one sub-master radio The device organizes the data from the managed slave radio device and information on whether or not communication with the slave radio device has been established, transmits the data to the master radio device, and manages the slave radio devices with which communication was possible The other sub-master radios are instructed by the master radio to change the management of the slave radios. Only in a radio system comprising means for communicating with slave radios said one sub-master radios could not communicate.

  Then, the present invention provides a plurality of sub-master radios between a slave radio and a master radio connected to a contact device or meter, the master radio communicates with a center device and the sub-master radio, In a radio system in which a slave radio communicates with the sub-master radio, when the slave radio transmits data upon activation from the contact device or meter, if data transmission to the sub-master radio fails, another slave radio When it becomes possible to receive data transmission from the sub-master radio that has failed due to a noise environment or the like due to transmission from the center device and data transmission to the sub-master radio, a preset high priority sub-device is received. A wireless system including means for making a call to a parent wireless device.

  Further, according to the present invention, the master radio that communicates with the center apparatus manages a plurality of sub-master radios, and the slave radio managed by the sub-master radio is changed by data transmission / reception depending on the success or failure of communication. And a means for communicating with the sub-master radio on a channel different from the radio channel used by the slave radio.

  Further, according to the present invention, the sub-master radio manages a plurality of sub-radio devices, and means for transmitting communication information with the sub-radio devices to the master radio device, and wireless between the master radio device and the sub-radio devices. And a means for communicating by changing channels.

  The present invention is a radio system in which the slave radio includes means for communicating with a plurality of sub-master radios and means for communicating by changing the radio channel for each sub-master radio.

  The conventional radio system uses a repeater, and simply transmits / receives information from the master radio to the slave radio as it is. The master radio, on the other hand, is compatible with the center device, compatible with the repeater, Complicated processing such as correspondence with a radio device has been required. However, in the present invention, a sub master radio device is provided between a master radio device and a slave radio device, and the master radio device has a center device and a plurality of sub radio devices. A wireless system that communicates with a master radio and a slave radio connected to a contact device or meter communicates with a sub-master radio. Even if the number of slave radios becomes enormous, the master radio is controlled in the past. Since the processing that has been performed is divided into a plurality of sub-radio devices, the communication processing load of the parent radio device is reduced, and communication is performed by changing the radio channel to a plurality of sub-radio devices for one sub-radio device. By making it possible, communication reliability can be improved.

The best mode for carrying out the present invention will be described.
First, a conventional wireless system will be described. FIG. 1 shows a conventional radio system, in which 11 is a center device, 12 is a master radio, 13 is a slave radio, and 14 is a repeater. FIG. 2 is an operation flowchart in the case where the number of slave radio devices 13 is two in the radio system configured as shown in FIG. Wireless transmission is performed from the parent wireless device 12 to the relay device 14 (step S11). The repeater 14 determines whether or not to transmit the data as it is to the child wireless device 1 according to the instruction from the parent wireless device 12, and if it is correct, transmits it to the child wireless device 1 (step S12). The slave radio device 1 performs meter reading according to the data received from the relay device 14 and returns a response to the relay device 14 (step S13). Depending on the data, processing such as returning the setting data of the slave radio may be performed without performing meter reading. The slave radio device 2 performs the same processing and returns a response to the relay device 14 (step S14). The relay device 14 wirelessly transmits the data received from the child wireless devices 1 and 2 to the parent wireless device 12 as it is (step S15). The master wireless device 12 wirelessly receives from the relay device 14 and transmits it to the center device 11 (step S16).

  In the conventional wireless system, as the number of slave wireless devices 13 increases, the number of communication reciprocations between the master wireless device 12 and the slave wireless device 13 increases, and if the relay device 14 is used, the communication time becomes longer. . The communication between the parent radio device 12 and the center device 11 may be not only wireless communication but also communication using a wired telephone line.

<First Embodiment>
A first embodiment of the present invention will be described. FIG. 3 is a configuration diagram of the wireless system according to the present embodiment. The sub-master radio device A15a and the sub-master radio device B15b are provided, and each manages the group A child radio devices 1 to 4 or the group B child radio devices 5 to 8 in a range in which radio communication is possible. .

  FIG. 4 is an operation flowchart of the wireless system according to the first embodiment. Wireless transmission is performed from the parent wireless device 12 to each sub-parent wireless device 15 (step S21). Each sub-master radio 15a, 15b requests meter reading from the subordinate radio 13 in charge when meter reading is performed collectively for the sub-radio 13 being managed (not when the collective meter-reading is completed) (step S22). A telegram is wirelessly transmitted (step S23). Each slave radio 13 performs meter reading (step S24). When the slave wireless device 13 acquires the meter reading data, the slave wireless device 13 wirelessly transmits it to one sub-master wireless device 15 registered in advance (step S25), and returns to step S22. Each sub-master radio 15 completes the data received from each sub-radio 13 after completing the batch meter reading (step S22) (step S26). The data arrangement is, for example, adding a meter reading value if the meter reading can be performed for each ID obtained by subtracting the common number from the ID number or ID number of each slave wireless device 13, and a time value confirming no response if there is no response. The sub master radio 15 wirelessly transmits the arranged data to the master radio 12 (step S27). The master radio device 12 waits until it is wirelessly received from all the sub-master radio devices 15a and 15b (step S28). When data is received from all the sub-master radio devices 15a and 15b, it transmits it to the center device 11 (step S29). Depending on a command from the center apparatus 11, it is possible to transmit to the center apparatus 11 only by wireless reception from a specific sub-master radio 15.

<Second Embodiment>
A second embodiment of the present invention will be described. FIG. 5 is a configuration diagram of the wireless system according to the present embodiment. FIG. 6 is an operation flowchart of the wireless system according to the second embodiment. The sub-master radio A15a is wirelessly transmitted from the master radio 12 to each sub-master radio 15 (step S31). When the sub-master radio A15a performs meter reading on the slave radios 1 to 8 being managed at once (collective meter reading). (Not finished) (step S32), wirelessly transmits a telegram requesting meter reading to the slave radio devices 1-8 (step S33), and each slave radio device 1-8 performs meter reading (step S34). When the meter reading data is acquired, the slave radio devices 1 to 8 wirelessly transmit to one pre-registered sub master radio device A15a (step S35) and return to step S32. When the collective meter reading is completed (step S32), the sub master radio device 15a arranges the data received from each of the sub radio devices 1 to 8 (step S36). The sub-master radio A15a wirelessly transmits the organized data to the master radio 12 (step S37), and the master radio 12 waits until it is radio-received from all the sub-master radios 15 (step S38). The master radio device 12 determines whether there is a non-response child radio device 13 based on the data from all the sub-master radio devices 15 (step S39). If there is a non-response child parent radio device 13, instead of the sub-parent radio device A 15 a that has managed the child radio device 13, another sub-parent radio device B 15 b that manages the non-response child radio device 13 is selected, Wireless transmission is performed (step S40). FIG. 7 is a wireless system showing how communication is switched. The other sub-master radio B15b changes the radio channel to the slave radio 13 that has not responded, for example, changes from channel 3 to channel 6, and performs radio transmission (step S41). When the master radio device 12 can acquire data from all the slave radio devices 13, the master radio device 12 transmits the data to the center device 11 (step S42).

  In addition, when data transmission to the sub-master radio device 15 fails when the slave radio device 13 is activated by activation from the contact device or meter, the radio channel is changed to another sub-master radio device 15 to transmit the data. To be able to. There are several options for switching communication to another sub-master radio 15, such as switching when data transmission fails once, or switching when data transmission is repeated several times and fails. When the data transmission from the sub-master radio 15 that has failed due to noise environment or the like due to the transmission from the center apparatus 11 can be received, the sub-master radio 15 having a higher priority set in advance is connected to the sub-master radio 15. Transmission from the wireless device 13 can be performed.

FIG. 6 is a configuration explanatory diagram of a conventional wireless system. Explanatory drawing of the operation | movement flowchart by the conventional radio | wireless system. 1 is a configuration explanatory diagram of a wireless system according to a first embodiment. FIG. Explanatory drawing of the operation | movement flowchart of the radio | wireless system of 1st Embodiment. FIG. 3 is a configuration explanatory diagram of a wireless system according to a second embodiment. Explanatory drawing of the operation | movement flowchart of the radio | wireless system of 2nd Embodiment. FIG. 6 is a configuration explanatory diagram of a communication switching wireless system according to a second embodiment.

Explanation of symbols

11 Center device 12 Master radio 13 Slave radio 14 Repeater 15 Sub master radio

Claims (6)

A plurality of sub-master radios are provided between a slave radio unit and a master radio unit to which a contact device or meter is connected. The master radio unit communicates with a center device and the sub-master radio unit. In the wireless system that communicates with the parent wireless device,
The master radio unit manages the sub master radio unit, and causes the sub master radio unit to collectively perform communication such as meter reading of the slave unit radio by transmitting and receiving data to and from the sub master radio unit With
Each of the plurality of sub-master radios divides and manages all the slave radios within a communicable range, organizes data from the managed slave radios, and sends data to the master radio A wireless system comprising: means for transmitting. A plurality of sub-master radios are provided between a slave radio unit and a master radio unit to which a contact device or meter is connected. The master radio unit communicates with a center device and the sub-master radio unit. In the wireless system that communicates with the parent wireless device,
The master radio unit manages the sub master radio unit, and causes the sub master radio unit to collectively perform communication such as meter reading of the slave unit radio by transmitting and receiving data to and from the sub master radio unit With
Each of the plurality of sub-master radios manages the slave radio units in an overlapping manner, and one sub-master radio unit is capable of communicating data from the managed slave radio units and communicating with the slave radio units. It is provided with a means for organizing information on whether or not it has been transmitted, transmitting data to the parent radio device, and managing the child radio devices with which communication was possible. A wireless system comprising: means for communicating with a child wireless device that has not been able to communicate with the one sub-parent wireless device in response to a management change command. A plurality of sub-master radios are provided between a slave radio unit and a master radio unit to which a contact device or meter is connected. The master radio unit communicates with a center device and the sub-master radio unit. In the wireless system that communicates with the parent wireless device,
If the data transmission to the sub-master radio device fails when the slave radio device is activated by the activation from the contact device or meter, the sub-radio device transmits data to another sub-master radio device and the transmission from the center device When the data transmission from the secondary master radio device that has failed due to the noise environment or the like can be received, a means for making a call to the secondary master radio device having a high priority set in advance is provided. A wireless system characterized by that.   The master radio that communicates with the center apparatus manages a plurality of secondary master radios, and means for changing the slave radio managed by the secondary master radio by data transmission / reception according to success or failure of communication, The wireless system according to any one of claims 1, 2, and 3, further comprising means for communicating with the sub-parent wireless device on a channel different from the wireless channel used by the device.   The secondary master radio manages a plurality of slave radios, and communicates by changing the radio channel between the master radio and the slave radio, and means for transmitting communication information with the slave radio to the master radio The wireless system according to any one of claims 1, 2, and 3 comprising means.   The radio system according to claim 2 or 3, wherein the slave radio includes means for communicating with a plurality of sub-master radios, and means for performing communication by changing a radio channel for each sub-master radio.