Water level flow sensor, water level flow monitoring system and water level flow monitoring method
A flow sensor and flow monitoring technology, applied in the direction of measuring flow/mass flow, liquid/fluid solid measurement, liquid level indicator for physical variable measurement, etc., can solve the inconvenience of automatic transmission of digital and graphic information, water level flow rate rate work The problem of large quantity and unguaranteed measurement accuracy can achieve the effect of facilitating real-time observation, saving manpower, and being easy to popularize and use.
Inactive Publication Date: 2018-05-18
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology
Although it is simple and easy to use hydraulic structures to measure water, the error is relatively large. In addition, due to the aging, deformation, and erosion of hydraulic structures, the measurement accuracy is not guaranteed.
Using special water measuring equipment and facilities to measure water, the construction cost of the facilities is high, and the water flow in the channel has a great impact on the observation accuracy, such as sedimentation, floating objects, etc.; and the calibration of the water level and flow is a large workload, which is not easy to implement Automatic transfer of numerical and graphic information
Method used
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Embodiment 1
[0033] Embodiment 1: a kind of water level flow sensor, see Figure 1 to Figure 4 , including a water level detection rod, the water level detection rod includes a housing 4, and a plurality of contacts for connecting with an external circuit (circuit board 2) are provided at an equidistant distance of 2.0 mm on the outer surface of the housing 4 along its axis direction 3. The contact 3 is a stainless steel screw, and the screw cap on the stainless steel screw is set on the outer surface of the housing 4, such as figure 1shown in . The water level flow sensor also includes a multi-way voltage comparison circuit correspondingly connected to the above-mentioned contact 3, a multi-way selection circuit correspondingly connected to the multi-way voltage comparison circuit and used to receive the output voltage of the multi-way voltage comparison circuit, and a multi-way selection circuit for receiving the output voltage of the multi-way voltage comparison circuit. The main contr...
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The present invention aims to provide a water level and flow sensor, a water level and flow monitoring system and a water level and flow monitoring method that can accurately and quickly measure water level and flow, have a long service life and work stably. The detection rod, the multi-channel voltage comparison circuit connected with the contacts, the multiple-channel selection circuit correspondingly connected with the multiple-channel voltage comparison circuit, the main control circuit receiving the output signal of the multiple-channel selection circuit, and the data transmission output connected with the main control circuit circuit; the water level flow monitoring system includes a host computer, the above-mentioned water level flow sensor, and the water level flow sensor is connected to the host computer via a RS‑232 / RS‑485 converter. Continuously monitor the water level and flow in the channel, and display the results on the digital tube and the upper computer.
Description
technical field [0001] The invention relates to the field of water level and flow monitoring, in particular to a water level and flow sensor for detecting flow, a water level and flow monitoring system and a water level and flow monitoring method. Background technique [0002] At present, my country is a country with a large water shortage, and agricultural irrigation water accounts for more than 60% of my country's total water consumption. Therefore, realizing precise irrigation for agriculture to save agricultural water resources is a very urgent requirement for farmland irrigation. A major move for continued development. [0003] At present, water measurement methods commonly used in irrigation areas include flow meter water measurement, hydraulic building water measurement, special water measurement equipment water measurement, etc. Among them, flow meter water measurement is mainly based on the flow velocity area method. Although the measurement accuracy is high, the pri...
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IPC IPC(8): G01F23/22G01F1/00
Inventor 周振民周科王学超
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER