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Method and device for detecting liquid level as well as negative-pressure wound therapeutic equipment
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A technology of liquid level detection and detection set, applied in measuring devices, lubricating indicating devices, buoy liquid level indicators, etc., can solve problems such as affecting the accuracy of measurement, increasing the cost of equipment use, and increasing the difficulty of processing consumable boxes. The effect of accurate liquid level information and cost reduction
Active Publication Date: 2015-02-04
KUNSHAN VR MEDICAL TECHNOLOGY CO LTD
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Problems solved by technology
[0005] Among them, the built-in detection method needs to place the detection element in the consumable box, which makes the processing of the consumable box more difficult, and also increases the cost of equipment use
In addition, external non-contact measurement methods mainly include light measurement and capacitance measurement. Light measurement is easily disturbed by external light, and capacitance measurement is easily affected by factors such as humidity, which affects the accuracy of measurement.
Method used
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example 1
[0067] Example 1, the step S14 may include the following steps:
[0068] Obtain the length from the identification line to one end of the scale by identifying the position of the identification line;
[0069] According to the ratio of the length from the identification line to one end of the scale to the overall length of the scale, the liquid level information corresponding to the identification line is calculated and obtained.
[0070] For example, in one example, the ratio of the length from the identification line to the scale at the bottom of the scale to the overall length of the scale is 0.4, and the overall scale has 8 scale values, then the liquid level information corresponding to the identification line can be known It is 3.2 scale values (0.4*8).
example 2
[0071] Example two, the step S14 may include the following steps:
[0072] Find and obtain the ruler line closest to the current identification line in the scale ruler;
[0073] Identify the liquid level information of the closest scale line through text recognition;
[0074] Use the liquid level information of the nearest gauge line as the liquid level information of the identification line.
[0075] For example, in an example, if the liquid level information of the closest scale line is 5 scale values, it can be known that the liquid level information corresponding to the identification line is also approximately 5 scale values.
example 3
[0076] Example three, the step S14 may include the following steps:
[0077] Find and obtain the ruler line closest to the current identification line in the scale ruler;
[0078] Identify the liquid level information of the closest scale line through text recognition;
[0079] Determine whether the identification line coincides with the scale line in the scale ruler;
[0080] When the judgment result is that the two coincide, the liquid level information identified by the identification unit is used as the liquid level information of the identification line; when the judgment result is that the two do not overlap, it is determined by the positional relationship between the identification line and its closest scale The liquid level information corresponding to the identification line;
[0081] Specifically, when the judgment result is that the two do not overlap, the step of determining the corresponding liquid level information at the identification line through the positio...
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Abstract
The invention provides a method and a device for detecting a liquid level as well as negative-pressure wound therapeutic equipment. The embodiment of the invention provides the device for detecting the liquid level, which is used for detecting liquid level information of percolate in a liquid collection box. The device for detecting the liquid level comprises an image acquisition unit, an image processing unit and a liquid level acquisition unit, wherein the image acquisition unit is used for photographing a reference picture of the liquid collection box by a photographing device; the image processing unit is used for acquiring an image containing scales and liquid level mark lines according to the reference picture of the liquid collection box; the liquid level acquisition unit is used for determining a scale position corresponding to a recognition line and acquiring the liquid level information of the percolate in the liquid collection box according to the scale position. The embodiment of the invention further accordingly provides the method for detecting the liquid level and the negative-pressure wound therapeutic equipment. According to the embodiment of the invention, the scale position of the percolate in the liquid collection box of the negative-pressure wound therapeutic equipment can be read in a non-contact manner.
Description
technical field [0001] The invention relates to the field of medical equipment, in particular to a liquid level detection method, a device and a negative pressure wound treatment instrument. Background technique [0002] Negative Pressure Wound Therapy (NPWT) is an advanced wound treatment developed in recent years. It mainly promotes wound healing by applying low negative pressure (generally -55mmHg to 175mmHg) to the wound. Specifically, negative pressure attracts the cell membrane, which can expand and distort it. The cell is considered damaged, and the information of damage is transmitted to the nucleus. Through signal conversion, it causes the cell to secrete pre-healing growth factors, including vascular proliferation factors, thereby stimulating tissue Produce more new blood vessels; in addition, negative pressure suction absorbs the exudate from the wound to help establish the liquid balance of the wound; it can also provide a moist environment, remove necrotic tiss...
Claims
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Application Information
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