| 摘要 |
Numeric values "a" representing a respective order of transmission by a plurality of transmitting units, and a numeric value N representing the total number of transmitting units, are set for each of the transmitting units. At startup, a transmitting unit 100 for which the numeric value "a" representing the order of transmission of the unit itself has been set to 1 sets a trigger value to N and transmits information about the numeric value "a" of the unit itself and detection information input from a sensor portion; and, when the numeric value N is detected from a received signal, transmits the numeric value "a" of the unit itself and detection information. When a numeric value of a-1 is detected from a received signal, the transmitting unit 100 for which the numeric value "a" representing the order of transmission of the unit itself has been set to a number other than 1 transmits the information of the numeric value "a" of the unit itself and detection information. |
