The invention relates to a device, a
system and a method of taxi charging. The method comprises the following steps of: current geographical position information at predetermined intervals is obtained; the accelerations in X, Y and Z axes of a vehicle are measured, and
vehicle acceleration information is obtained; a
cloud server obtains each parameter from a preset
database; and according to the geographical position information, the
vehicle acceleration information and each parameter, the paying amount is obtained by adopting a preset
algorithm. Calculation parameters related to the invention are all obtained by automatic calculation of a cloud
system and a control module, and the mileage of a
taximeter is prevented from being manually adjusted; the
vehicle driving mileage is obtained by a geographical
positioning system, and the
vehicle driving time and stop moments are precisely calculated by the acceleration measuring technology, so that the obtained mileage is more precise. The
cloud server obtains high-instantaneity data in real time such as the current
fuel oil price, the blocking index of a driving
route and the empty vehicle index of a destination, so that the finally obtained paying amount is enabled to more accurately and reasonably reflect the cost and the value of the service.