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A microwave solid flowmeter detection system and device

A solid flowmeter and detection system technology, which is applied in the direction of measuring devices, liquid/fluid solid measurement, measurement flow/mass flow, etc., can solve the problems of inaccurate detection, poor operability, and low sensitivity of solid flowmeters, and achieve optimization Delivery system and combustion conditions, stable quality, high sensitivity effect

Active Publication Date: 2020-02-18
傅古月
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the defects of inaccurate detection, low sensitivity, poor real-time performance and poor operability of the above-mentioned solid flowmeter, and provide a microwave solid flowmeter detection system and device. By setting FPGA and phase-locked loop, the flow information is realized. Accurate measurement and monitoring, high sensitivity, strong anti-interference ability, easy to control, real-time monitoring of solid transportation

Method used

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  • A microwave solid flowmeter detection system and device
  • A microwave solid flowmeter detection system and device
  • A microwave solid flowmeter detection system and device

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Embodiment 1

[0030] A microwave solid flowmeter detection system: including three independent Doppler echo acquisition modules, a sensing board, a conversion board, and a host computer. The sensing board includes an A / D analog-to-digital conversion module, a filter down-sampling module, and three An FPGA signal processing system, RS485 communication module.

[0031] The FPGA signal processing system is used for the conversion of time domain and frequency domain signals, smoothing processing of speed, constant false alarm processing and flow value statistics. The I and Q analog signals containing Doppler information collected by the high-precision chip are converted into digital signals, which are used as the signal source of the FPGA digital signal processing system. The conversion board is used to convert the digital signal into a current signal for current output as a signal source of the display device. Three FPGA signal processing modules are connected to the conversion board through ...

Embodiment 2

[0034] A microwave solid flowmeter detection device: including a sensor body, an electrical box, and a host computer, characterized in that the electrical box contains a conversion board, the sensor body is connected to three probes, arranged in a horizontal ring array, and the flowmeter probes are fixed on the waiting Measure the solid flow on the wall of the pipeline, install it obliquely, and the angle between the probe and the solid flow direction is 45°. By adjusting the angle between the probe and the solid flow direction, the microwave field is controlled, the effective collection area of ​​the solid fluid and the microwave field is maximized, and the echo is reduced. The interference of the wave reflection signal on the phase-locked loop improves the accuracy of Doppler echo acquisition. The probes collect Doppler echo signals separately without interfering with each other. Each probe corresponds to an independent signal processor, and the processed signals are collected...

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Abstract

The invention relates to a detection system and device for microwave solid flow. The system comprises a Doppler echo collection module, a sensing plate, a conversion plate and an upper computer. The system is characterized in that the sensing plate comprises an A / D (analog-digital) conversion module, a filter downsampling module and an FPGA signal processing system; the conversion plate is used for converting digital signals into current signals, and the current is output and used as a signal source of a display device. By adopting the detection method, signals of a microwave solid flow meterare processed, the functions of all the modules are integrally designed, the signals are subjected to smoothing and constant false alarm processing through the FPGA multiple times, the defects of a traditional flow meter are overcome, accurate measurement and monitoring of flow information are achieved, the sensitivity is high, the anti-interference capacity is high, the device is easy to control,and free falling, dilute phase conveying and concentrated phase conveying can be monitored in real time.

Description

technical field [0001] The invention belongs to the technical field of solid flow meters, and in particular relates to a microwave solid flow detection system and device, which can be used for flow solid monitoring in many industries such as metallurgy, environmental protection, pulp and paper, ore, nuclear power, and chemical industry. Background technique [0002] On-line accurate measurement of flow has always been a difficult point in the development of flowmeters, and it is also one of the difficulties in industrial measurement parameters. Traditional flowmeter detection methods have problems such as demanding detection scenarios, high manufacturing costs, and difficult evaluation of real-time measurement accuracy. With the development of the economy and the improvement of the industrial level, the quantitative feeding and batching of solids, granules, powders and other materials have become the key to industrial process control. In recent years, with the rapid developm...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F1/66
CPCG01F1/663
Inventor 傅古月
Owner 傅古月