Abstract: The present disclosure provides a terminal, a server, an Internet of Things data transmission method, and a data transmission system, wherein the Internet of Things data transmission method includes following blocks: transmitting data and uniquely corresponding identity information from a terminal used to collect data to a server, and feeding back, at the server, at least one response signal to the terminal in response to the received data and the identity information.

Abstract: A method for calculating areas of farmable land for the working of agricultural machinery, applied in an electronic device, obtains data as to specific locations and data as to time-points of agricultural machinery within a time period when working normally, and processes and cleans the data time-point data to remove data of location and time-points which are time-point data not in a normal operation state because of repeated traverses and time spent in non-operating states. The electronic device clusters and segments the location and time-points data and time-point data distinguishes between time-point data of the agricultural machinery in a normal operation state and data in non-operating or repeating states. The location and time-points time-point data of the agricultural machinery in the normal operation state are retained. The electronic device generates polygons based on the retained time-point data and calculates operable areas according to the polygons.

Abstract: The present disclosure provides a terminal, a server, an Internet of Things data transmission method, and a data transmission system, wherein the Internet of Things data transmission method includes following blocks: transmitting data and uniquely corresponding identity information from a terminal used to collect data to a server, and. feeding back, at the server, at least one response signal to the terminal in response to the received data and the identity information.