Under-ice river water flow velocity measuring device and method based on correlation method
A technology of flow velocity measurement and correlation method, which is applied in the direction of measuring device, fluid velocity measurement, velocity/acceleration/impact measurement, etc., and can solve the problems of difficult and accurate measurement of river flow velocity measurement devices
Pending Publication Date: 2021-03-12
JILIN UNIV
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[0005] In view of this, the object of the present invention is to provide a kind of subglacial river water flow velocity measurement device and measurement method based on the correlation method, to solve the problem that the existing river water flow velocity measurement device is difficult to accurately measure on the ice surface
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[0023] The patent of the present invention will be further explained below in conjunction with specific embodiments, but the patent of the present invention is not limited thereto.
[0024] Such as figure 1 , figure 2 As shown, the present invention provides a kind of subglacial river water velocity measuring device based on the correlation method, comprising: a signal receiving device 1 and a host computer 2, wherein the signal receiving device 1 includes an audio sensor module 11 connected in sequence, a belt Pass filter circuit 12, signal protection circuit 13, audio amplifier module 14, analog-to-digital converter 15 and single-chip microcomputer 16, described audio frequency sensing module 11 is two, is placed on the ice surface at intervals along the river water flow direction, is used for collecting The random noise signal generated by the flow of river water under the ice, the random noise signal is transmitted to the single chip microcomputer 16 after band-pass filt...
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The invention discloses an under-ice river water flow velocity measuring device and method based on a correlation method. The measuring device comprises a signal receiving device and an upper computer, and the signal receiving device comprises audio sensing modules, a band-pass filter circuit, a signal protection circuit, an audio amplification module, an analog-digital converter and a single-chipmicrocomputer which are connected in sequence; and the number of the audio sensing modules is two, the audio sensing modules are arranged on the ice surface at intervals in the flowing direction of river water and used for collecting random noise signals generated by flowing of river water under ice, the random noise signals are sequentially subjected to band-pass filtering, signal protection, amplification and analog-digital conversion and then transmitted to the single-chip microcomputer, and the upper computer is connected with the single-chip microcomputer. and is used for receiving the two paths of processed random noise signals and calculating the flow velocity of the under-ice river water. The under-ice river water flow velocity measuring device based on the correlation method is simple in structure, free of influence of parameters such as sound velocity and impurity content in water, high in measuring precision and wide in application range.
Description
technical field [0001] The invention relates to the technical field of water flow velocity measurement, and in particular provides a subglacial river water flow velocity measurement device and a measurement method based on a correlation method. Background technique [0002] With the development of my country's economy and society, the comprehensive utilization of rivers has gradually become an important research topic. Hydrological information is closely related to shipping, water conservancy, ecological and other departments. important. The current meter is an instrument for measuring flow velocity, which is widely used in flow velocity measurement units for professional water conservancy and hydrology research. [0003] There are many methods for measuring river water velocity, among which the suspended paddle velocity measurement method and propagation velocity difference method are widely used. Among them, the suspended paddle measurement method is to probe the measurin...
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IPC IPC(8): G01P5/22
CPCG01P5/22
Inventor 段清明孟宪峰李姗珊赵虎杨超
Owner JILIN UNIV