WIRELESS NETWORK SYSTEM
There is introduced a wireless network system which can establish a complicated wireless network without cumbersome tasks. Arranged hierarchically, wireless terminal a is wire-connected to a master apparatus M, and wireless terminals b, c, d, e, f, g, h, and the like are wire-connected to slave apparatuses A, B, C, D, E, F, G, H, I, and the like. Wireless terminal a outputs a command outputted from the master apparatus M to wireless terminals c and the like whose ranks are immediately below that of the wireless terminal a. Wireless terminal c transmits the command directly or indirectly to wireless terminals d and the like whose ranks are immediately below that of the wireless terminal c. Wireless terminal d communicates with slave apparatus B through a wire, and returns a response from the slave apparatus B to the master apparatus M via wireless terminal c and wireless terminal a.
1 . A wireless network system comprising:
a wireless terminal wire-connected to a master apparatus; and
one or more wireless terminals each of which is wire-connected to one or more slave apparatuses,
wherein the master apparatus transmits a command for a specific one of the slave apparatuses to the wireless terminal wire-connected to the master apparatus;
the wireless terminal wire-connected to the master apparatus transmits directly or indirectly to the other wireless terminals a first signal in which ID of the wireless terminal wire-connected to the master apparatus is added to the command from the master apparatus;
the wireless terminals receiving the first signal store the ID included in the first signal, extract the command from the first signal, and output the command to the corresponding slave apparatuses;
the specific slave apparatus performs the command outputted from the wireless terminal wire-connected thereto and returns a response to the wireless terminal wire-connected thereto;
the wireless terminal connected to the specific slave apparatus outputs directly or indirectly the response from the specific slave apparatus to the wireless terminal wire-connected to the master apparatus based on the ID of the first signal; and
the wireless terminal wire-connected to the master apparatus outputs the response to the master apparatus.
2 . The system of claim 1 , wherein the wireless terminal wire-connected to the specific slave apparatus obtains a second signal by adding its own ID to the response outputted from the specific slave apparatus, and outputs directly or indirectly the second signal to the wireless terminal wire-connected to the master apparatus, and
the wireless terminal wire-connected to the master apparatus extracts the response from the second signal, outputs the response to the master apparatus, and stores the ID included in the second signal.
3 . The system of claim 2 , wherein when the wireless terminal wire-connected to the master apparatus fails to receive the second signal, the wireless terminal wire-connected to the master apparatus erases the previously stored ID of the wireless terminal wire-connected to the specific slave apparatus.
4 . A wireless network system comprising:
a single main wireless terminal wire-connected to a master apparatus; and
a plurality of sub wireless terminals each of which is wire-connected to one or more slave apparatuses, the sub wireless terminals performing wireless communications with the main wireless terminal,
wherein the sub wireless terminals are arranged such that their respective ranks are lower than that of the main wireless terminal;
the master apparatus transmits a command for a specific one of the slave apparatuses to the main wireless terminal;
the main wireless terminal transmits directly or indirectly the command outputted from the master apparatus to all the sub wireless terminals;
the sub wireless terminals receiving the command outputs the command to the corresponding slave apparatuses wire-connected thereto;
the specific slave apparatus performs the command outputted from the sub wireless terminal wire-connected thereto and returns a response to the sub wireless terminal wire-connected thereto;
the sub wireless terminal wire-connected to the specific slave apparatus transmits directly or indirectly to the main wireless terminal the response outputted from the specific slave apparatus; and
the main wireless terminal outputs the received response to the master apparatus.
5 . The system of claim 4 , wherein the sub wireless terminal wire-connected to the specific slave apparatus obtains a second signal by adding its own ID to the response outputted from the specific slave apparatus, and transmits the second signal directly or indirectly to the main wireless terminal; and
the main wireless terminal extracts the response from the second signal, outputs the response to the master apparatus, and stores the ID included in the second signal.
6 . The system of claim 5 , wherein when the main wireless terminal fails to receive the second signal from the sub wireless terminals, the main wireless terminal erases the previously stored ID of the wireless terminal wire-connected to the specific slave apparatus.