JP2020136699A5

JP2020136699A5 -

Info

Publication number: JP2020136699A5
Application number: JP2019022994A
Authority: JP
Filing date: 2019-02-12
Publication date: 2022-01-06
Anticipated expiration: 2039-02-12

Description

上述した課題を解決し、目的を達成するために、本発明の通信システムは、親局と、親局と通信線でマルチドロップ接続される複数の子局とを備える。親局は、第１中継子局決定部と、第１中継子局設定部とを備える。第１中継子局決定部は、複数の子局の各々へ個別に問い合わせを行い、問い合わせに対して応答した子局のうち予め設定された条件を満たす子局を第１中継子局に決定する。第１中継子局設定部は、問い合わせに対して応答しない子局である第１子局の情報を含む第１中継設定要求を、第１中継子局決定部によって決定された第１中継子局に対して行う。複数の子局の各々は、記憶部と、中継処理部とを備える。記憶部は、第１中継設定要求が受信された場合に、第１中継設定要求に含まれる第１子局の情報を記憶する。中継処理部は、記憶部に記憶された情報に基づいて、親局と第１子局との間の通信を中継する。 In order to solve the above-mentioned problems and achieve the object, the communication system of the present invention includes a master station and a plurality of slave stations that are multi-drop-connected to the master station by a communication line. The master station includes a first relay slave station determination unit and a first relay slave station setting unit. The first relay slave station determination unit makes inquiries to each of the plurality of slave stations individually, and determines the slave station that meets the preset conditions among the slave stations that responded to the inquiry as the first relay slave station. .. The first relay slave station setting unit receives the first relay setting request including the information of the first slave station, which is a slave station that does not respond to the inquiry, to the first relay slave station determined by the first relay slave station determination unit. To do. Each of the plurality of slave stations includes a storage unit and a relay processing unit. When the first relay setting request is received , the storage unit stores the information of the first slave station included in the first relay setting request. The relay processing unit relays communication between the master station and the first slave station based on the information stored in the storage unit.

Claims

In a communication system including a master station and a plurality of slave stations that are multi-drop connected to the master station by a communication line.
The master station is
The first relay slave station determination unit that individually makes an inquiry to each of the plurality of slave stations and determines the slave station that satisfies the preset conditions among the slave stations that responded to the inquiry as the first relay slave station. When,
A first relay that makes a first relay setting request including information of a first slave station that is a slave station that does not respond to the inquiry to the first relay slave station determined by the first relay slave station determination unit. With a slave station setting unit,
Each of the plurality of slave stations
When the first relay setting request is received, a storage unit that stores information of the first slave station included in the first relay setting request, and a storage unit.
A communication system including a relay processing unit that relays communication between the master station and the first slave station based on the information stored in the storage unit.

Each of the plurality of slave stations
When the first relay setting request is received, the first child makes an inquiry to the first slave station based on the information of the first slave station included in the first relay setting request, and responds to the inquiry. The second relay slave station determination unit that determines the station as the second slave station and determines the second slave station that satisfies the preset conditions among the determined second slave stations as the second relay slave station.
A second relay that makes a second relay setting request including information on the third slave station, which is the first slave station that does not respond to the inquiry, to the second relay slave station determined by the second relay slave station determination unit. The communication system according to claim 1, further comprising a slave station setting unit.

The storage unit is
When the second relay setting request is received, the information of the third slave station included in the second relay setting request is stored.
The relay processing unit
The communication system according to claim 2, wherein the communication between the first relay slave station and the third slave station is relayed based on the information stored in the storage unit.

The response from the slave station to the inquiry contains information on the reception level of the slave station.
The preset conditions are
The communication system according to claim 2 or 3, wherein the reception level condition is included.

The communication system according to claim 4, wherein the reception level condition is the slave station having the lowest reception level among the slave stations having the reception level equal to or higher than the threshold value in response to the inquiry.

The master station is
Notify the slave station of the condition information indicating the condition of the reception level, and
The second relay slave station determination unit is
The communication system according to claim 4 or 5, wherein it is determined whether or not the preset conditions are satisfied based on the condition information notified from the master station.