Method and device for reducing power consumption of signal processing unit of acoustic Doppler current profiler

Abstract

The invention discloses a method and a device for reducing power consumption of a signal processing unit of an acoustic Doppler current profiler. The device comprises a slave processor, a master processor, a power supply module, a communication module, a signal acquisition module, a control signal module and a storage module, wherein the slave processor controls power-on and power-off states of an electrifying module and the master processor of the signal processing unit according to a set working time point. The master processor needing massive data processing works intermittently, and only the slave processor with ultra-low power consumption works in idle time not reaching the set working time point. The slave processor is interrupted and awakened by the master processor, so that the energy-saving effect is realized. According to the invention, in consideration of the characteristics of large data size and discrete data processing time points of the signal processing unit of the acoustic Doppler current profiler, the working time periods of the master and slave processors are sequentially separated so as to guarantee the real time property of data processing. The method and the device have the advantages of effectively controlling heat dissipation, improving work stability and reliability of the signal processing unit and achieving an energy saving effect to enable the acoustic Doppler current profiler to work for a long time with power supply from a mobile battery.

Description

technical field [0001] The invention relates to digital signal processing technology and ultrasonic technology, in particular to a method and device for reducing power consumption of a signal processing unit of a flow velocity profiler. Background technique [0002] In the hydrological survey of rivers, the measurement of flow velocity is a very important task. In the past, single-point flow meters (such as mechanical flow meters, electrical connection flow meters, etc.) were generally used to measure the flow of each vertical line one by one. Measure the flow velocity at a point, and then convert the flow rate of the entire section according to the flow velocity area method. Although the measurement accuracy of this test method can meet the requirements of the hydrological test specification, it takes a long time and has a large work intensity, which are its great disadvantages. [0003] Acoustic Doppler Velocity Profiler (ADCP for short) uses the acoustic Doppler effect to...

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Problems solved by technology

[0005] The present invention overcomes the defect of high power consumption of the signal processing unit of the current velocity profiler, and proposes a method and device for reducing the power consumption of the signal processing unit of the current velocity profiler, so as to solve the problem of low utilization rate of the signal processing unit of the existing current velocity profiler. The problem of large waste of energy consumption

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