| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a fuel consumption amount estimation system, car sharing system, portable terminal, fuel consumption amount estimation method and program capable of billing under an accurate fuel consumption amount in a car sharing and capable of executing and operating at a low cost.SOLUTION: This invention comprises a portable terminal and a management server. The portable terminal collects acoustic signal within a vehicle and transmits the collected acoustic signal to the management server. The management server receives the collected acoustic signal within the vehicle, performs an acoustic analysis on the basis of feature of engine sound from the received acoustic signal within the vehicle, extracts an engine speed, performs an acoustic analysis about a frequency range of the extracted engine speed, a frequency deviation and a sound pressure level so as to estimate an accelerator opening degree. Then, the extracted engine speed and the estimated accelerator opening degree are integrated in time series, a coefficient is multiplied to convert a fuel consumption amount.</p> |
