Ultrasonic micro-flow detecting device
A detection device, micro-flow technology, applied in the direction of measuring device, flow monitor, measuring flow/mass flow, etc., to avoid corrosion and blockage, significant use, and avoid secondary pollution.
Inactive Publication Date: 2014-08-06
胡达广
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Problems solved by technology
It is difficult for ordinary flowmeters to measure it
As a result, this aspect is still a blank
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[0013] The ultrasonic signal processing circuit described here refers to a circuit device that can convert the ultrasonic electric signal of the water drop echo output by the ultrasonic receiving head into an electric signal that can be recognized by the single-chip microcomputer. Whenever a water drop flows through the ultrasonic probe, the ultrasonic receiving head will receive the ultrasonic echo of the water drop, and the ultrasonic receiving head will output the electric signal of the echo. Since the signal is very weak and cannot be recognized by the single-chip microcomputer, it needs to be processed by a series of programs such as amplification by the ultrasonic signal processing circuit to become a signal that the single-chip microcomputer can recognize. It enables the microcontroller to identify the flow of each drop of water. The ultrasonic signal processing circuits that can be used in the present invention have various forms, and they can have different structures ...
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The invention provides an ultrasonic micro-flow detecting device and belongs to the field of the micro-flow detecting technology. In order to detect the micro-flow of liquid under the premise that the monitored liquid does not directly flow through a flow measuring device, measures taken in the ultrasonic micro-flow detecting device are as follows: an ultrasonic probe is mounted on one side of a drip cylinder, the ultrasonic probe comprises an ultrasonic emitting probe and an ultrasonic receiving probe, the ultrasonic emitting probe is connected with an ultrasonic signal generator, the ultrasonic receiving probe is connected with an ultrasonic signal processing circuit which is connected with a single-chip microcomputer, and the single-chip microcomputer is connected with a display screen. The ultrasonic micro-flow detecting device has the advantages that due to the fact that liquid drip information is read with the ultrasonic technology, non-contact of the detected liquid is achieved in the liquid flow detecting process. In other words, under the situation that the liquid does not need to make direct contact with the detecting device and still circulates in an own pipeline, the micro-flow of the liquid can be detected out. Thus, secondary pollution brought to the detected liquid can be avoided.
Description
technical field [0001] The invention belongs to the field of micro flow detection technology. Background technique [0002] In many technical fields such as industrial automatic control, medical treatment, laboratory, etc., it is necessary to detect and control the flow of micro-flow liquid. However, because it is a micro-flow, its flow rate is very slow, the flow rate per unit time is very small, and its flow force is not even enough to drive the instrument. Therefore, it is almost impossible to accurately detect and measure by conventional means. In some special occasions, such as the field of medical technology, it is necessary to detect and measure the micro-flow medicinal liquid for precise manual or automatic control. However, the flowmeters used in the prior art are not only unable to measure the micro-flow rate of the liquid medicine, but also require the liquid medicine to be measured to flow through the flowmeter. This is not allowed for medical drugs, because ...
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IPC IPC(8): G01F1/66A61M5/172
Inventor 胡达广
Owner 胡达广