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A technology of communication devices and relay devices, which is applied in the direction of transmission systems, electrical components, instruments, etc., and can solve problems such as uneven communication traffic
Inactive Publication Date: 2015-04-01
MITSUBISHI ELECTRIC CORP
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[0014] In addition, in the automatic meter inspection system for smart meters, there are times when there is a lot of traffic and times when there is little, and there is a feature that the traffic is not uniform.
Method used
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Embodiment approach 1
[0069] In this embodiment, an automatic meter look-up system for smart meters will be described.
[0070] In this embodiment, the message transmitting and receiving device installed at the center judges the progress of the message communication, and outputs an instruction to adjust the priority to the relay device.
[0071] Then, the relay device adjusts the priority according to the instruction from the message sending and receiving device.
[0072] Through these steps, effective and extremely fine-grained priority control is possible.
[0073] figure 1 It is a schematic diagram of the smart meter automatic meter inspection system of this embodiment.
[0074] exist figure 1 In the automatic meter look-up system for smart meters, smart meters 40, relay devices 30, message sending and receiving devices 20, and application server devices 10 are connected through a tree-structured network.
[0075] The smart meter 40 measures the consumption of electricity, gas, tap water, et...
Embodiment approach 2
[0376] In Embodiment 1, when the message transmission / reception apparatus 20 transmits a priority adjustment message to a some relay apparatus 30, it transmits a priority adjustment message to all the relay apparatuses 30 at the same timing.
[0377] In this embodiment, the operation of the priority adjustment unit 242 to adjust the order of sending priority adjustment messages to the relay device 30 according to the performance and load status of the relay device 30 will be described.
[0378] The configuration of the message transmitting and receiving device 20 of this embodiment is, for example, figure 2 As shown, the structure of the relay device 30 in this embodiment is, for example, image 3 shown.
[0379] In addition, in the present embodiment, in the message transmission / reception device 20 , the priority adjustment unit 242 determines the processing load for processing the downlink message and the uplink message for each relay device 30 .
[0380] Then, the priori...
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Abstract
A relay device (30) receives downstream messages to be sent to a smart meter, stores the received downstream messages, selects, on the basis of the levels of priority of the downstream messages, a high-priority downstream message to be sent to the smart meter with priority among the stored downstream messages, and sends the high-priority downstream message to the smart meter. A message transmission unit (21) sends a downstream message for which a level of priority has been specified, to the relay device (30). A priority level adjustment section (242) specifies an extraction condition used to extract a downstream message for which the level of priority is to be adjusted. The priority level adjustment section (242) also extracts a downstream message that satisfies the extraction condition, and generates a priority level adjustment message that instructs the relay device (30) to select a high-priority downstream message with a level of priority different from the level of priority already set for the extracted downstream message being given to the extracted downstream message. The message transmission unit (21) sends the priority level adjustment message to the relay device (30).
Description
technical field [0001] The present invention relates to a communication system for transmitting and receiving messages with a plurality of terminal devices. [0002] The present invention relates to, for example, an intelligent instrument automatic meter look-up system for sending and receiving messages with a plurality of intelligent instruments. Background technique [0003] The introduction of smart meter automatic meter inspection systems for electricity, gas, tap water, etc. using smart meters (hereinafter also simply referred to as "meters") is progressing in various countries. [0004] In the automatic meter look-up system for smart meters, smart meters, relay devices, message sending and receiving devices, and application server devices are connected through a tree-structured network. [0005] Smart meters consist of several million or more, relay devices consist of thousands to tens of thousands, message sending and receiving devices consist of several to ten, and ...
Claims
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