Omron Corporation

Yuki Inoue

Ryota Yamada

Hajime Umeki

Yusuke Yamaji

Hiroshi Sameshima

Ryota Akai

Soji Ohmae

Yasushi Kawashima

Tomohiro Ozaki

A radio communication system includes: slave devices which repetitively transmit, a plurality of times, a radio signal with a prescribed frequency that includes device identification information during a radio communication with a master device; a master device which generates communication situation information including a reception success rate and received signal strength of a radio signal during each radio communication from each slave device; and a failure factor estimation apparatus which, based on communication situation information with respect to a plurality of radio communications including a radio communication in which a communication failure of the received signal strength is lower than prescribed strength and/or the reception success rate is lower than a prescribed rate has occurred, generates and outputs failure factor presentation information indicating a failure inducer estimated to have induced the communication failure and an estimation result of a position of the failure inducer.

Radio communication system and non-transitory computer-readable storage medium

A module transmits send information to be processed by an information processing apparatus along a transmission path on which the information processing apparatus is present. When the send information is sent in accordance with predetermined sending parameters, if a sending failure in which a sending completion state of the send information cannot be confirmed occurs, a part or all of the sending parameters used for sending of the send information with respect to which the sending failure has occurred are changed, and the send information is resent in accordance with the sending parameters after the changing. Then, the predetermined sending parameter changed between the occurrence of the sending failure and confirmation of the sending completion state of the resent send information, and resend result information related to a send result corresponding to the changed predetermined sending parameter are acquired and sent toward a predetermined processing apparatus.

Transmission module, information transmission network system, information transmission method, information transmission program

A sink node forming a sensor network system with one or more sensor nodes includes a communication time period allocation means for allocating, to a target sensor node, a communication time period for measurement information transmission by the target sensor node, to not overlap a communication time period for measurement information transmission by a node related to a wireless communication environment between the target sensor node and sink node, concerning measurement information transmission by a sensor target sensor node other than the target sensor node among the one or more sensor nodes. The communication time period allocation means adjusts a communication time period allocated for subsequent measurement information to be transmitted by the target sensor node, based on a predetermined wireless communication parameter related to the wireless communication environment between the target sensor node and sink node, concerning measurement information transmission by the target sensor node.

Sink node, sensor network system, information collection method, and information collection program

When a status of communication between a first transmission module and a second transmission module that is located downstream of the first transmission module on a predetermined transmission path is output, received signal strength information is output for each piece of send target information in order of transmission, and regarding this output, an interval between output of received signal strength information associated with send target information transmitted immediately before transmission of one piece of send target information and output of received signal strength information associated with the one piece of send target information corresponds to a transmission period of the one piece of send target information from the first transmission module to the second transmission module. This makes it easy to grasp a status of communication between arbitrary transmission modules in a network in which information is transmitted sequentially via a plurality of transmission modules along a predetermined transmission path.

Growing community of inventors

Sakai, Japan

Yuki Inoue