System for estimating amount of absorbed carbon dioxide and method for estimating amount of absorbed carbon dioxide

A carbon dioxide absorption estimation system comprising a sensor terminal, a server, and an output device,

• wherein the sensor terminal comprises:
• a sensor for measuring a plurality of mutually-differing types of environmental information related to a field in which it is installed;
• a storage unit for storing corresponding relationships between respective environmental information and carbon dioxide (CO2) absorption amount for the plurality of types of environmental information;
• a CO2 absorption amount acquisition unit for acquiring a plurality of CO2 absorption amounts with reference to the corresponding relationships corresponding to each type of measured environmental information;
• and
• a minimum value selection unit for comparing the plurality of acquired CO2 absorption amounts and selects a minimum value as an estimated value,
• wherein the server comprises a transmission/reception unit for receiving information regarding the estimated value from the sensor terminal and transmits the information regarding the estimated value to the output device,
• wherein the output device comprises a display unit for displaying the information related to the estimated value,
• wherein the storage unit stores a corresponding relationship defined for each type of plant for a ground surface temperature-CO2 absorption amount corresponding relationship between a ground surface temperature and the CO2 absorption amount and a solar radiation amount-CO2 absorption amount corresponding relationship between the solar radiation amount and the CO2 absorption amount, and
• wherein the CO2 absorption amount acquisition unit references the corresponding relationships in accordance with the plant cultivated in the field where the sensor is installed.

A carbon dioxide absorption amount estimation method, comprising:

• measuring, by a sensor terminal, a plurality of types of mutually-differing environmental information related to a field provided with a sensor terminal, wherein the environmental information includes ground surface temperature, solar radiation amount, air temperature, and relative humidity;
• receiving, by a server, the plurality of types of environmental information from the sensor terminal;
• referring, by the server, to a corresponding relationship between each of the plurality of types of environmental information and carbon dioxide (CO2) absorption amounts stored in advance in a storage device, for each of the received environmental information to acquire a plurality of CO2 absorption amounts;
• comparing, by the server, the plurality of acquired CO2 absorption amounts with each other and selects a minimum value as an estimated value;
• transmitting, by the server, information regarding the estimated value to an output device;
• displaying, by the output device, the information regarding the estimated value;
• storing, by the server, a corresponding relationship defined for each type of plant for a ground surface temperature-CO2 absorption amount corresponding relationship between the ground surface temperature and the CO2 absorption amount and a solar radiation amount-CO2 absorption amount corresponding relationship between the solar radiation amount and the CO2 absorption amount;
• and
• referring, by the server, the corresponding relationships in accordance with the plant cultivated in the field where the sensor is installed.

A carbon dioxide absorption amount estimation method, comprising:

• obtaining a sensor ID, which is identification information for identifying a sensor terminal, a temperature of a field, solar radiation information regarding an amount of solar radiation emitted onto a field, temperature information regarding a temperature of the field, and humidity information regarding a humidity of the field;
• determining a type of plants cultivated in the field based on the obtained sensor ID;
• calculating vapor pressure deficit information of the field based on the temperature information and the humidity information;
• calculating a temperature-based estimated value based on the temperature information by converting the temperature to temperature-CO2 absorption amount corresponding relationship data of the plant type, a solar radiation amount-based estimated value based on the solar radiation information by converting the solar radiation amount to the solar radiation amount-CO2 absorption amount corresponding relationship data of the plant type, and a vapor pressure deficit-based estimated value based on the vapor pressure deficit information by converting the vapor pressure deficit to the vapor pressure deficit-CO2 absorption amount corresponding relationship data of the plant type, which are estimated values of an absorption amount of carbon dioxide per unit time of the field;
• and
• selecting a minimum value obtained by comparing the temperature-based estimated value, the solar radiation amount-based estimated value, and the vapor pressure deficit-based estimated value with each other as an estimated value of the absorption amount of carbon dioxide of the field.