JP2009100074A5

JP2009100074A5 -

Info

Publication number: JP2009100074A5
Application number: JP2007267460A
Authority: JP
Filing date: 2007-10-15
Publication date: 2010-07-08
Anticipated expiration: 2027-10-15

Claims

With the parent machine,
A plurality of slave units that perform wireless communication with the master unit,
The transmission path of information in the wireless communication is
It is set to either a transmission path that transmits directly without relaying other slave units, or a transmission path that relays and transmits other slave units,
A telemeter system that transmits measurement data acquired by each of the slave units to the master unit by the wireless communication,
The slave unit determines whether or not wireless communication (referred to as “proximity communication”) between the slave unit and a slave unit or a master unit closest to the upper side is possible,
When the near field communication is not possible, the telemeter system is characterized in that a process of newly establishing another slave unit as a relay unit in the near field communication (referred to as “relay unit new process”) is performed.

The master unit or slave unit is
When a predetermined first telegram is wirelessly received from a slave unit closest to the lower side, a response telegram is returned wirelessly.
The slave is
Whether or not the first telegram is wirelessly transmitted to the parent device or slave device closest to the upper side, and whether or not the response telegram corresponding to the radio transmission is wirelessly received within a predetermined period after the wireless transmission. A first step of detecting;
A second step of repeating the processing of the first step until it is detected that the wireless reception has been made;
In the second step, if it is not detected that the wireless reception has been made even if the processing of the first step is repeated a predetermined number of times, wireless communication with the nearest communication terminal on the upper side is impossible. A third step of determining
The telemeter system according to claim 1, wherein a process including: is executed.

The repeater installation process is as follows:
A slave unit that has determined that wireless communication with the nearest communication terminal on the upper side is not possible (referred to as “target slave unit”)
A new route establishment request message including the ID of the target slave unit and the ID of the master unit or slave unit closest to the upper side of the target slave unit (referred to as “partner ID”) is wirelessly transmitted by broadcast. The telemeter system according to claim 1, further comprising a transmission process.

The slave is
When the new route establishment request message is received,
It is determined whether or not the partner ID included in the new route establishment request message matches the ID of the slave or parent device closest to the host device when viewed from the own device,
4. The telemeter system according to claim 3, wherein, if they coincide with each other, the received new route establishment request message is transferred to a child device or a parent device closest to the host device when viewed from the own device. .

With the parent machine,
A plurality of slave units that perform wireless communication with the master unit,
The transmission path of information in the wireless communication is
A wireless communication system set to any one of a transmission path for directly transmitting without relaying other slave units and a transmission path for relaying and transmitting other slave units,
The slave unit determines whether or not wireless communication (referred to as “proximity communication”) between the slave unit and a slave unit or a master unit closest to the upper side is possible,
A wireless communication system, characterized in that, when the near field communication is not possible, a process of newly establishing another slave unit as a relay unit in the near field communication is performed.