Liquid measurement apparatus, tanks, vehicles and fuel measurements

The present invention provides a liquid metering device types, fuel tank, vehicle, and fuel quantity measuring method, the liquid measurement apparatus comprising: an optical signal transmitter, an optical transmitter for transmitting a signal to the liquid reservoir tank measuring light; a reflective structure disposed in the tank the bottom, the reflective structure for reflecting light entering the liquid within the signal; a receiver, a receiver for receiving reflected by the reflective structure and the optical signal refracted from the liquid; a processor connected to the receiver, the processor in accordance with the reflected and determining the amount of structure of the reflective liquid reservoir tank reflects the optical signal from the liquid. Provided by the present invention can solve the technical solution of the prior art the measurement result is not accurate.