A multi-mode collection and multi-purpose hydrological cable channel current measurement device and method

Abstract

The invention discloses a multi-mode and multi-purpose hydrological cableway flow measuring device and method, which is composed of a self-power generation system, a water quality self-test system, a self-warning system, and a signal self-transmission system. Use Fourier transform infrared spectroscopy to detect self-collected water samples to realize real-time observation of the water quality of the measured section; cooperate with the improved current meter to install the armature winding to form the bearing of the motor rotor and install the iron core and stator winding to form the motor The shaft sleeve of the stator realizes the self-power generation function between the stator and the rotor under the action of excitation; it cooperates with the wireless electromagnetic sensor to realize the normal transmission and storage of data when the wired data transmission fails. The present invention can be widely used in the flow measurement process of the cable channel of various hydrological stations, and realizes self-generating flow measurement, self-monitoring water quality status, and self-transmission flow rate in emergency situations (such as power supply equipment water damage, sudden power failure, etc.) And water quality signal data, self-warning multi-mode, multi-angle, multi-functional purposes.

Description

technical field [0001] The invention relates to a multi-mode and multi-purpose hydrological cableway flow measuring device and method, belonging to the field of hydrological instruments. Background technique [0002] There are many methods of flow measurement involved in the process of hydrological testing, and there are mainly two methods of flow measurement: first, mechanical flow measurement, including conventional propeller (or cup) type current meter flow measurement, mechanical rotor flow meter flow measurement, etc. ; Second, automatic flow measurement, including Doppler flow meter flow measurement, electromagnetic flow meter flow measurement, acoustic point flow meter flow measurement, radio current flow meter flow measurement, optical current flow meter flow measurement, etc. [0003] Velocity and discharge measurement is an indispensable part of the basic data of hydrological model tests, and the above two types of flow measurement methods also have various shortco...

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Problems solved by technology

This requires a certain number of transmission cables to be arranged. In addition, when the transmission distance is relatively long, the signal attenuation is serious and the data error rate is relatively high. To ensure the validity of the data, it is necessary to add auxiliary equipment to effectively amplify the signal; the mechanical rotor flow meter , this kind of flow meter has defects such as narrow speed measurement range, high starting flow speed, inability to measure weak flow, fear of floating objects such as sediment, water plants, damage to flow field, easy damage of sensor, low measurement accuracy, and failure to meet the needs of long-term automatic monitoring. The Doppler flowmeter uses an ultrasonic transducer to detect the flow velocity with ultrasonic waves. Although the accuracy is high, the cost is high; the electromagnetic flowmeter uses the principle of electromagnetic induction to measure the conductive fluid according to the electromotive force generated when the conductive fluid passes through an external magnetic field. Flow, used for indirect measurement of flow velocity, has the problem of low measurement efficiency

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