Air flow rate measuring device and air flow rate measuring method

An air flow rate measurement method performed by an air flow rate measurement device including an air flow rate detection device which detects an air flow rate of an air flow moving in a pipe and a calculation unit, the method comprising:

• performing a process of causing the air flow rate detection device to detect the air flow rate and generate an input signal corresponding to the air flow rate;
• and
• performing a process of causing the calculation unit to determine whether the air flow is a laminar flow or a turbulent flow based on the input signal and output a result of calculation using an output result obtained by performing proportional calculation on the input signal when it is determined that the air flow is a laminar flow or a result of calculation using an output result obtained by performing square calculation on the input signal when it is determined that the air flow is a turbulent flow as an output signal corresponding to the air flow rate.