Environmental sensing device and application method thereof

A method for measuring environmental condition around crops, comprising:

• burying the environmental sensing device in the soil where the crops grow when planting the crops;
• wherein
• the environmental sensing device comprises:
• a body having an accommodating space inside;
• at least one first conducting unit disposed outside the body;
• at least one second conducting unit disposed outside the body and corresponding to the first conducting unit;
• wherein
• the at least one first conducting unit and the at least one second conducting unit touch the soil where the crops grow;
• an electric measuring unit disposed in the accommodating space for measuring current, voltage, capacitance and temperature of the surrounding environment corresponding to the first conducting unit and the second conducting unit;
• wherein the electric measuring unit further transmits a first signal according to the measurement of the current, voltage, capacitance and temperature of the environment;
• a communication unit disposed in the accommodating space and electrically connected to the processing unit for communicating with an external data processing device;
• a positioning unit disposed in the accommodating space and electrically connected to the processing unit for tracking a location of the environment sensing device;
• a temperature sensing unit disposed in the accommodating space for sensing temperature of the surrounding environment and transmitting a second signal;
• the communication unit transmits a third signal according to the location of the environment sensing device to a database, wherein the database pre-saves worldwide geographic information;
• the database sends the geographic information of the location of the environment sensing device to the communication unit according to the third signal;
• and
• a processing unit disposed in the accommodating space for receiving the first signal and the second signal and calibrating the measurement of the temperature of the surround environment by the second signal;
• and
• wherein the processing unit further calculates soil moisture of the soil where the crops grow according to the environmental data, the measurement of the current, voltage and capacitance of the surrounding environment, the calibrated temperature of the surrounding environment and the geographic information.