Fecha de publicación: 30/08/2021 Fuente: Wipo "IOT" PROBLEM TO BE SOLVED: To provide an IoT data transmission system characterized in that even if there is an IoT terminal which cannot be connected to a wireless network, data collected by each IoT terminal is transmitted wirelessly to a server on the network.SOLUTION: The most upstream IoT terminal E15 in daisy chain connection constitutes a network connection terminal. The network connection terminal transmits a packet including data of sensors 21 to 25 to a server 31 by wireless communication with a wireless access point 51 of a network 41 to which the server 31 for collecting data of the sensors 21 to 25 is connected. Further, other IoT terminals B12 to D14 constitute a relay terminal, except for the most downstream and upstream IoT terminals A11 and E15 in the daisy chain connection. The relay terminal adds data of the sensors 21 to 23 of the packets received from the IoT terminals A11 to C13 one downstream of itself in the daisy chain connection to a packet to be transmitted to a destination of destination information of a setting information holding unit 63.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2021,JPO&INPIT