Measurement system, measurement method, and computer program

A measurement method using a measurement system that includes a first sensor connected to the measurement system, a second sensor connected to the measurement system, at least one processor, and at least one memory, the first sensor measuring a measurement target and outputting a measured value of a predetermined physical quantity, the second sensor outputting a result of measurement of the measurement target, namely, a measured value of same type as the predetermined physical quantity and being to be newly installed for maintenance purposes,

• the measurement method comprising:
• causing the memory to store first calibration data and an estimation model, the first calibration data relating to the first sensor and indicating a relation between the measured value and a value of the predetermined physical quantity, the estimation model being used to grasp a state of the measurement target according to the value of the predetermined physical quantity, the first calibration data indicating the value of the predetermined physical quantity that is generated by using a first measured value obtained when a known standard sample is measured by the first sensor;
• and
• causing the processor to perform steps comprising
• (1) acquiring the first measured value from the first sensor and a second measured value from the second sensor, the first and second measured values being obtained when the measurement target is measured by the first and second sensors at a predetermined time,
• wherein, the predetermined physical quantity represents a concentration of each of a plurality of types of gas, and
• the first sensor and the second sensor are odor sensors that respectively include a plurality of sensor elements configured to output independent measured values;
• (2) converting the first measured value to the value of the predetermined physical quantity by use of the first calibration data,
• (3) calculating second calibration data for the second sensor from the second measured value and the value of the predetermined physical quantity obtained in step (2),
• (4) converting the second measured value to the value of the predetermined physical quantity by use of the second calibration data, and
• (5) detecting the state of the measurement target by use of the estimation model and the value of the predetermined physical quantity obtained in step (4), and
• (6) disconnecting the first sensor from the measurement system upon completion of step (5).

A non-transitory computer-readable medium upon which is embodied instructions which, when executed by a processor, cause the processor to perform a measurement method using a measurement system that includes a first sensor connected to the measurement system, a second sensor connected to the measurement system, at least one processor, and at least one memory, the first sensor measuring a measurement target and outputting a measured value of a predetermined physical quantity, the second sensor outputting a result of measurement of the measurement target, namely, a measured value of same type as the predetermined physical quantity and being to be newly installed for maintenance purposes,

• the measurement method comprising:
• storing first calibration data and an estimation model, the first calibration data relating to the first sensor and indicating a relation between the measured value and a value of the predetermined physical quantity, the estimation model being used to grasp a state of the measurement target according to the value of the predetermined physical quantity, the first calibration data indicating the value of the predetermined physical quantity that is generated by using a first measured value obtained when a known standard sample is measured by the first sensor;
• acquiring the first measured value from the first sensor and a second measured value from the second sensor, the first and second measured values being obtained when the measurement target is measured by the first and second sensors at a predetermined time,
• wherein, the predetermined physical quantity represents a concentration of each of a plurality of types of gas, and
• the first sensor and the second sensor are odor sensors that respectively include a plurality of sensor elements configured to output independent measured values;
• converting the first measured value to the value of the predetermined physical quantity by use of the first calibration data;
• calculating second calibration data for the second sensor from the second measured value and the value of the predetermined physical quantity obtained in said step of converting the first measured value;
• converting the second measured value to the value of the predetermined physical quantity by use of the second calibration data;
• and
• detecting the state of the measurement target by use of the estimation model and the value of the predetermined physical quantity obtained in said step of converting the second measured value, and
• disconnecting the first senor from the measurement system upon completion of the detecting the state of the measurement target.