In the study, we developed a flowmeter to be mounted on fishing vessels to measure their fuel consumption in the sea, and evaluated the performance of the flowmeter under the dynamic conditions of a fishing vessel. In order to analyze the dynamic behavior of the fishing vessel in the sea, dynamic motions (pitch and heave) based on the speed of the fishing vessel were obtained through simulation and field test. In the presence of vibration, the uncertainty of the ultrasonic flowmeter increased from 0.12% to 0.5%. The measurement error of the ultrasonic flowmeter also increased from 0.5% up to 2% when dynamic behavior motions (pitch and heave) increased with the speed of the fishing vessel. The results confirmed that the measurement errors of ultrasonic flowmeter were consistent at the same flow rate and speed of the fishing vessel in the dynamic test bed and sea field test. Additionally, to confirm the long-term stability of the developed flowmeter, a long-term test of the flowmeter was performed for three days in actual fishing conditions. The results indicated that the ultrasonic flowmeter developed in the study can measure the fuel consumption of an actual fishing vessel. To the best of the authors’ knowledge, this is the first study to measure the fuel consumption in the sea via mounting a flowmeter on an actual fishing vessel.

在这项研究中，我们开发了一种安装在渔船上的流量计，以测量其在海上的燃料消耗，并评估了渔船在动态条件下的流量计性能。为了分析渔船在海上的动态行为，通过模拟和现场试验获得了基于渔船速度的动态运动（俯仰和升沉）。在存在振动的情况下，超声波流量计的不确定度从0.12％增加到0.5％。当动态行为运动（俯仰和升沉）随着渔船速度的增加而增加时，超声波流量计的测量误差也从0.5％增加到2％。结果证实，在动态试验台和海域试验中，在相同流速和渔船速度的情况下，超声波流量计的测量误差是一致的。另外，为了确认所开发流量计的长期稳定性，在实际捕鱼条件下对流量计进行了为期三天的长期测试。结果表明，研究中开发的超声波流量计可以测量实际渔船的燃料消耗。据作者所知，这是第一个通过将流量计安装在实际渔船上来测量海上燃油消耗的研究。结果表明，研究中开发的超声波流量计可以测量实际渔船的燃料消耗。据作者所知，这是第一个通过将流量计安装在实际渔船上来测量海上燃油消耗的研究。结果表明，研究中开发的超声波流量计可以测量实际渔船的燃料消耗。据作者所知，这是第一个通过将流量计安装在实际渔船上来测量海上燃油消耗的研究。