KR20050039780A - A system for measuring the flow rate of ringer solution using a mehtod of image signal processing - Google Patents

A system for measuring the flow rate of ringer solution using a mehtod of image signal processing Download PDF

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KR20050039780A
KR20050039780A KR1020050020773A KR20050020773A KR20050039780A KR 20050039780 A KR20050039780 A KR 20050039780A KR 1020050020773 A KR1020050020773 A KR 1020050020773A KR 20050020773 A KR20050020773 A KR 20050020773A KR 20050039780 A KR20050039780 A KR 20050039780A
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ringer
image sensor
light emitting
signal processing
focus lens
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KR100664644B1 (en
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강주완
강상욱
노병국
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강주완
강상욱
노병국
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    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C9/00Stools for specified purposes
    • A47C9/002Stools for specified purposes with exercising means or having special therapeutic or ergonomic effects
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C7/00Parts, details, or accessories of chairs or stools
    • A47C7/50Supports for the feet or the legs coupled to fixed parts of the chair
    • A47C7/506Supports for the feet or the legs coupled to fixed parts of the chair of adjustable type
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F5/00Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/01Orthopaedic devices, e.g. splints, casts or braces

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  • Health & Medical Sciences (AREA)
  • Vascular Medicine (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nursing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Measuring Volume Flow (AREA)

Abstract

본 발명은 정맥 주사시 링거액이 환자 혈관 속으로 주입되는 속도를 모니터링하여 경보 신호를 사용자에게 통보해주는 장치에 관한 것으로, 점적 챔버(drip chamber)의 투명한 외각에 CCD 이미지 센서(charge-coupled device image sensor), 초점 렌즈(foucsing lens), 발광 다이오드(LED)를 부착한 다음, CCD 이미지 센서에서 발생하는 전기 신호를 분석하여 링거액 방울의 낙하 시간 간격 및 방울의 용적을 측정하기 위한 시스템에 관한 것이다.The present invention relates to a device that monitors the rate at which Ringer's fluid is injected into a patient's blood vessel during intravenous injection and notifies a user of an alarm signal. The CCD image sensor is provided on a transparent outer surface of a drip chamber. ), A focal lens, and a light emitting diode (LED) are attached, and then the electrical signal generated by the CCD image sensor is analyzed to measure the drop time interval and the volume of the drop of the Ringer's solution.

Description

영상 신호 처리를 이용한 링거액 유량 측정 시스템{A system for measuring the flow rate of Ringer solution using a mehtod of Image Signal Processing}A system for measuring the flow rate of Ringer solution using a mehtod of Image Signal Processing}

본 발명은 점적 챔버에서 낙하하는 링거액 방울을 감지하여 소리나 빛과 같은 경보 신호를 이용하여 환자에게 링거액 주입 상태에 대한 다양한 정보를 제공해주는 링거액 주입 상태 모니터링 장치에 관한 것이다.The present invention relates to a Ringer's fluid injection state monitoring device that detects Ringer's fluid drops falling from the drip chamber and provides a variety of information on the state of the Ringer's fluid injection state to the patient using an alarm signal such as sound or light.

종래의 링거액 주입 상태 모니터링 장치로는,As a conventional ringer liquid injection state monitoring device,

광센서를 감지 수단으로 이용하는 장치는 광센서의 조도 변화를 감지하는 방식으로 링거액의 색상, 투명도, 주변의 밝기에 영향을 받고, 링거액 내부에 전극을 삽입시켜 전류를 감지토록 하는 장치는 이물질, 세균 등의 오염에 노출되고, 정전용량센서를 사용하는 방식은 고감도 센싱 능력을 구현하기 위해선 제작 비용이 너무 많이 들고 부피가 커지는 단점이 있다.The device using the optical sensor as a sensing means detects the change in illuminance of the optical sensor and is affected by the color, transparency, and brightness of the Ringer's solution. Exposed to pollution, such as using a capacitive sensor has a disadvantage in that the manufacturing cost is too high and bulky to implement a high sensitivity sensing capability.

따라서, 본 발명은 상술한 바와 같은 종래의 링거액 주입 상태 모니터링 장치들의 문제점을 해결하기 위해 안출된 것으로,Therefore, the present invention has been made to solve the problems of the conventional ringer liquid injection state monitoring apparatus as described above,

본 고안의 목적은 링거액의 종류 및 주변 밝기에 영향을 덜 받고 오염의 염려가 전혀 없으며 소형이면서 제작 비용이 적게 드는 링거액 주입 상태 모니터링 장치를 제공하는 데에 있으며, 이하 첨부된 도면에 의거 본 발명의 구성 및 작용을 상세히 설명하면 다음과 같다. An object of the present invention is to provide a ringer liquid injection state monitoring device that is less affected by the type of ringer liquid and ambient brightness, there is no concern about contamination, and is small and low in manufacturing cost, and according to the accompanying drawings of the present invention The configuration and operation will be described in detail as follows.

본 발명에서 예시되는 실시 예 1은 도 1에서 도시된 바와 같이, 점적 챔버(5) 외각에 설치된 CCD 이미지 센서(1), 초점 렌즈(2), 발광 다이오드(3)로 구성되어지며, 링거액 방울(4)이 CCD 이미지 센서(1)와 발광 다이오드(3) 사이를 통과하게 되면 방울의 이미지는 초점 렌즈(2)를 통해 CCD 이미지 센서(1)에 촬상(撮像)된다. 촬상된 이미지는 디지털 신호 처리 장치(7)에 의해 전기 신호로 변환되어지게 되며 마이크로프로세서(8)는 전기 신호를 분석하여 링거액 방울의 낙하 시간 간격 및 방울의 용적을 계산한다. Embodiment 1 illustrated in the present invention, as shown in FIG. When (4) passes between the CCD image sensor 1 and the light emitting diode 3, the image of the drop is captured by the CCD image sensor 1 through the focus lens 2. The captured image is converted into an electrical signal by the digital signal processing device 7 and the microprocessor 8 analyzes the electrical signal to calculate the drop time interval and the volume of the drop of the Ringer's solution.

도 2는 가로 세로 각각 6 픽셀(pixels)의 총 36 픽셀을 가진 CCD 이미지 센서를 사용했을때, 링거액 방울이 이미지 센서를 통과하는 동안에 방울이 이미지 센서에 촬상되는 모습을 예시로 보여준다. 도 2의 A는 링거액 방울이 이미지 센서(1)와 발광 다이오드(3) 사이를 진입하기 시작하는 시점의 이미지 센서 픽셀들의 촬상 상태를 보여주며, 방울이 이미지 센서 앞을 거의 통과하게 되면 I와 같은 픽셀 촬상 상태가 나타나게 된다. CCD 이미지 센서의 픽셀에 촬상되는 방울 이미지의 형상 및 위치에 따라 이미지 센서에서 발생하는 전기 신호의 특성이 달라지기 때문에, 이러한 변동 전기 신호를 마이크로프로세서(8)로 분석하여 방울의 낙하 시간 간격과 방울의 용적을 계산하게 된다.FIG. 2 shows an example in which the droplets are captured by the image sensor while the Ringer's droplet passes through the image sensor when using a CCD image sensor having a total of 36 pixels of 6 pixels each. FIG. 2A shows the imaging state of the image sensor pixels at the time when the ringer liquid droplet starts to enter between the image sensor 1 and the light emitting diode 3, and when the droplet passes almost in front of the image sensor, pixel imaging as I The status will appear. Since the characteristics of the electrical signal generated by the image sensor vary depending on the shape and position of the drop image captured on the pixel of the CCD image sensor, the fluctuation time and the drop time interval of the drop are analyzed by the microprocessor 8. Calculate the volume of.

본 발명에서 예시되는 실시 예 2는 도 3에서 도시된 바와 같이, 튜브의 외각에 CCD 이미지 센서(1), 초점 렌즈(2), 발광 다이오드(3)을 설치하여, 튜브 속을 흐르는 링거액의 이미지를 이미지 센서에 촬상되도록 하여, 상기 실시 예 1과 같은 방식으로 촬상된 이미지를 디지털 신호 처리 장치(7)로 분석하여 링거액 유속을 마이크로프로세서(8)에 의해 계산하는 방안을 보여준다. In Example 2 illustrated in the present invention, as shown in FIG. 3, the CCD image sensor 1, the focus lens 2, and the light emitting diode 3 are installed on the outer surface of the tube, so that the image of the Ringer's liquid flowing through the tube. The image sensor captured by the image sensor in the same manner as in the first embodiment is analyzed by the digital signal processing apparatus 7 to calculate the ringer liquid flow rate by the microprocessor 8.

본 발명에서 예시되는 실시 예 3은 도 4에서 도시된 바와 같이, 점적 챔버의 외각에 반사 거울(12)을 설치하여 발광다이오드(3)의 빛이 거울(12)에 반사된 후 이미지 센서(1)에 도달하도록 하는 방안을 보여준다.As illustrated in FIG. 4, the third exemplary embodiment of the present invention installs a reflecting mirror 12 at an outer surface of the dropping chamber so that the light of the light emitting diode 3 is reflected on the mirror 12 and then the image sensor 1. Shows how to reach).

이상과 같이 본 발명에 의하면 링거액 방울의 낙하 시간 간격 및 용적을 측정하는 방법에 의해 링거액의 주입 속도 및 주입량을 계산할 수 있으므로,As described above, according to the present invention, the injection speed and the injection amount of the Ringer's solution can be calculated by the method of measuring the drop time interval and the volume of the Ringer's liquid drop.

환자의 이동 중에 발생하는 원치 않는 링거액 주입 속도의 변화를 감지하여 경보 신호를 환자에게 통보할 수 있으며,It can detect the unwanted change in Ringer's fluid infusion rate during the patient's movement and notify the patient of the alarm signal.

원하는 만큼의 링거액이 주입되었을 때 경보 신호를 환자에게 보낼 줄 수 있으며,It can alert the patient when the amount of Ringer's solution is given.

링거액이 모두 소진되었을때 이를 경보 신호로 환자에게 통보해 줄 수 있는 효과가 제공된다.When the Ringer's fluid is used up, it is possible to notify the patient by an alarm signal.

도 1은 본 발명의 실시 예 1에 따른 링거액 유량 측정 시스템 개략도,1 is a schematic diagram of a Ringer's fluid flow rate measuring system according to Embodiment 1 of the present invention;

도 2는 도 1의 이미지 센서의 픽셀에 촬상되는 링거액 방울 이미지 변화 경향을 보여주는 예시도,FIG. 2 is an exemplary view showing a tendency of a Ringer's droplet image image picked up to a pixel of the image sensor of FIG. 1;

도 3은 본 발명의 실시 예 2에 따른 링거액 유량 측정 시스템 개략도,3 is a schematic diagram of a Ringer's fluid flow rate measuring system according to Embodiment 2 of the present invention;

도 4는 본 발명의 실시 예 3에 따른 링거액 유량 측정 시스템 개략도이다.4 is a schematic diagram of a Ringer's fluid flow rate measuring system according to Embodiment 3 of the present invention.

Claims (3)

점적 챔버(5) 또는 튜브(10)의 외각에 설치된 CCD 이미지 센서(1), 초점렌즈(2), 발광 다이오드(3)와;A CCD image sensor 1, a focus lens 2, and a light emitting diode 3 provided on an outer surface of the drop chamber 5 or the tube 10; 상기 이미지 센서(1)에 포착되는 이미지를 디지털 신호 처리를 하여 전기 신호를 변환하는 디지털 신호 처리 장치(7)와;A digital signal processing device (7) for converting an electrical signal by performing digital signal processing on the image captured by the image sensor (1); 상기 전기 신호를 분석하여 점적 챔버 속에서 낙하하는 링거액 방울의 낙하 시간 간격과 용적을 계산하거나, 튜브 속을 흐르는 링거액의 유속을 계산하기 위한 마이크로 프로세서(8)로 이루어 지는 것을 특징으로 하는 링거액 주입 상태 모니터링 장치. Ringer's fluid injection state characterized in that it consists of a microprocessor (8) for analyzing the electrical signal to calculate the falling time interval and volume of Ringer's fluid drops falling in the drip chamber, or to calculate the flow rate of Ringer's fluid flowing through the tube. Monitoring device. 제 1 항에 있어서,The method of claim 1, 이미지 센서(1)와 초점 렌즈(2)를 튜명한 튜브(10)의 한쪽 편에 일렬로 설치하고, 발광 다이오드(3)는 이미지 센서 및 초점 렌즈의 아래 부분에 설치하여, 발광 다이오드에서 나오는 빛이 튜브에 반사된 후 초점 렌즈를 통과하여 이미지 센서에 도달하도록 하는 것을 특징으로 하는 링거액 주입 상태 모니터링 장치. The image sensor 1 and the focus lens 2 are arranged in one side of the transparent tube 10, and the light emitting diodes 3 are installed in the lower part of the image sensor and the focus lens, so that the light emitted from the light emitting diodes can be And a ringer fluid injection state monitoring device, which is reflected by the tube and passes through the focus lens to reach the image sensor. 제 1 항에 있어서,The method of claim 1, 이미지 센서(1)와 발광 다이오드(3)를 점적 챔버의 같은 편에 설치하는 대신에, 그 반대편에 반사 거울(12)을 설치하여 발광 다이오드의 빛이 거울에 반사된 후 이미지 센서에 도달되도록 하는 것을 특징으로 하는 링거액 주입 상태 모니터링 장치. Instead of installing the image sensor 1 and the light emitting diode 3 on the same side of the drip chamber, a reflecting mirror 12 is provided on the opposite side to reach the image sensor after the light of the light emitting diode is reflected off the mirror. Ringer's fluid injection state monitoring device, characterized in that.
KR1020050020773A 2005-03-12 2005-03-12 A system for measuring the flow rate of Ringer solution using a mehtod of Image Signal Processing KR100664644B1 (en)

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