Patent ID: 11961150
Assignee: SICHUAN FORESTRY AND GRASSLAND INVESTIGATION AND PLANNING INSTITUTE
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 6:
7. The national forest resources continuous inventory sample plot monitoring method according to claim 5, wherein specific operation steps in step (2) are as follows:
(2.1) regularly starting the communication relay apparatus according to a set wake-up time, and accessing the network server on the server side through the base station, to obtain next wake-up time and wake-up duration;
(2.2) regularly starting the tree diameter measuring sensor according to the set wake-up time, and measuring the sample tree to be measured to obtain a measured diameter value and a tilt sensor value;
(2.3) in response to the tilt sensor value exceeding a specified threshold, determining that the current sample tree is a fallen tree, and updating the tally type to be a fallen tree;
(2.4) reading diameter changes of the sample tree in a continuous period, and updating the tally type to be a dead standing tree when the diameter of the sample tree is constant or regularly reduced beyond a predetermined interval;
(2.5) connecting the tree diameter measuring sensor with the communication relay apparatus to transmit information about the diameter of the standing tree, a type of the standing tree, and battery capacity;
(2.6) performing clock synchronization on the tree diameter measuring sensor and the communication relay apparatus to obtain next wake-up time and wake-up duration, and entering a dormant status after success;
(2.7) receiving, by the communication value relay apparatus, data from the tree diameter measuring sensor for storing, computing a difference from the previous measured data, and returning a difference result according to a coding order of the tree diameter measuring sensor; and
(2.8) returning, by the communication relay apparatus, the stored information to a communication receiving apparatus through the base station, and summarizing the information into the network server on the platform layer.