CLAIMS
1. A wireless communication device constituting a
wireless mesh network with a data collection device
collecting data from a plurality of wireless communication
devices, and transmitting the data to the data collection
device directly or via at least one other wireless
communication device, the wireless communication device
comprising:
a communication quality measurement unit to measure communication quality of a communication path between the own wireless communication device and the other wireless communication device or the data collection device;
a storage unit to störe a measurement result of the communication quality; and
a communication processing unit to generate a notification for requesting installation of a wireless communication device based on the measurement result and transmit the notification to the data collection device.
2. The wireless communication device according to claim 1,
wherein
the communication quality measurement unit periodically measures the communication quality, and
when the number of times the communication quality is equal to or less than a communication quality threshold in a defined period is equal to or greater than an installation request threshold, the communication processing unit generates the notification.
3. The wireless communication device according to claim 1
or 2, wherein

the communication processing unit causes the storage unit to störe Information of the other wireless communication device to be connected or the data collection device together with the measurement result and generates the notification including Information of the wireless communication device to be connected or the data collection device.
4. The wireless communication device according to claim 1,
2, or 3, wherein
the communication processing unit causes the storage unit to störe, in an area of a non-volatile memory thereof, Statistical Information including the measurement result and Information of presence or absence of switching of communication paths together with time Information regarding when the notification is generated, and Outputs the measurement result and the time Information stored in the area of the non-volatile memory to a terminal device capable of communicating with the own wireless communication device.
5. The wireless communication device according to any one
of Claims 1 to 4, comprising a data acquisition unit to be
connected to a sensor to detecting the data, to acquire the
data from the sensor, wherein
the communication processing unit transmits the data acquired by the data acquisition unit to the data collection device directly or via the other wireless communication device.
6. The wireless communication device according to any one
of Claims 1 to 4, comprising a sensor to detect the data,
wherein

the communication processing unit transmits the data detected by the sensor to the data collection device directly or via the other wireless communication device.
7. A data collection device collecting data from the
wireless communication device according to any one of
Claims 1 to 6, the data collection device comprising:
an output unit to Output Information of a notification for requesting installation of a wireless communication device transmitted from the wireless communication device; and
a data collection device side communication processing unit to receive the notification and perform control to output Information of the received notification from the output unit.
8. A wireless communication device installation request
method for a wireless communication device that constitutes
a wireless mesh network with a data collection device
collecting data from a plurality of wireless communication
devices, and transmits the data to the data collection
device directly or via at least one other wireless
communication device, the wireless communication device
installation request method comprising:
a measurement step of measuring communication quality of a communication path between the own wireless communication device and the other wireless communication device or the data collection device;
a storage step of storing a measurement result of the communication quality; and
a request step of, when the number of times the communication quality is equal to or less than a communication quality threshold in a defined period is

equal to or greater than an installation request threshold, generating and transmitting a notification for requesting installation of a wireless communication device.