Liquid flow detection sensor

Abstract

The utility model relates to a liquid flow detection sensor. The liquid flow detection sensor is a capacitive detection device with a double-layer structure and comprises an outer layer and an inner layer. The outer layer is an isolation protection layer and comprises an outer layer main body, a terminal die and an inner layer film, and the outer layer is attached to the outer surface of the inner layer; the inner layer is an induction circuit and comprises a first electrode, a second electrode and a wiring terminal, and the inner layer is tightly attached to the outer layer and distributed according to specific arrangement. When liquid flows through the outer layer of the liquid flow detection sensor, the electrical performance between the two electrodes in the inner layer is changed, and the two electrodes in the inner layer detect the electrical variation and calibrate the electrical variation as liquid flow. The liquid flow detection sensor is simple in structure, low in cost, convenient to use, suitable for being used in cooperation with an intelligent urine collector, capable of achieving comprehensive, accurate and objective urination data collection and effective intelligent evaluation of urinary incontinence conditions, high in practicability and good in market popularization prospect.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the medical sensor technical field, concretely relates to a liquid flow detection sensor for intelligent urine collector. BACKGROUND

[0002] With the arrival of the aging population, the number of elderly people is increasing, and the problem of incomplete urination and enuresis is becoming more and more serious with age, seriously affecting the quality of life of the elderly. In addition, for patients who are inconvenient to move, long-term bedridden and do not use catheterization to urinate, there is no good solution to the problem of enuresis.

[0003] Male urinary incontinence is mainly divided into stress urinary incontinence, functional urinary incontinence, overflow urinary incontinence and urgency urinary incontinence. The treatment methods corresponding to different types of urinary incontinence are also different. Clinical patients often show mixed symptoms of multiple types of urinary incontinence, so individual urination needs to be diagnosed and treated. At present, the main way of urinary incontinence assessment is to count the number of urine pads, urine pad weighing and urination diary. However, because patients have different body feelings and different replacement frequencies, the number of urine pads often has a large difference; urine pad weighing is easily affected by evaporation and other factors; urination diary cannot guarantee objectivity and accuracy, and it is difficult to collect comprehensive data.

[0004] The main way of clinical urinary incontinence assessment is to use scales and questionnaires, such as OAB, I-QOL, etc. The disadvantage is that it is too subjective and has low accuracy, and it is difficult for elderly patients with poor understanding ability to obtain accurate and comprehensive clinical data.

[0005] In summary, with the growing demand for urine collectors in the market, there is an urgent need to develop a liquid flow detection sensor suitable for use with a urine collector to achieve comprehensive, accurate and objective urination data collection and effective intelligent assessment of urinary incontinence. INVENTION CONTENTS

[0006] In order to overcome the above-mentioned defects of the existing urination data collection method and urinary incontinence assessment method, the utility model is based on clinical practice and designs a new type of liquid flow detection sensor. The utility model liquid flow detection sensor has the advantages of simple structure, convenient use, comprehensive, accurate and objective urination data collection, effective intelligent assessment of urinary incontinence, good market prospect, and no similar invention or utility model patent application is found through retrieval.

[0007] Specifically, the utility model provides a liquid flow detection sensor, which is a double-layer structure capacitive detection device, comprising: an outer layer 1 and an inner layer 2.

[0008] The outer layer 1 is a protective isolation layer, which is attached to the outer surface of the inner layer 2 to play a protective isolation role.

[0009] The inner layer 2 is an inductive circuit comprising two electrodes, which is closely attached to the outer layer 1 and is arranged in a specific manner.

[0010] When the liquid flows through the outer layer 1 of the liquid flow detection sensor, the electrical properties between the two electrodes in the inner layer 2 change, and the two electrodes in the inner layer 2 detect the amount of electrical change and mark it as the liquid flow.

[0011] Optionally, the outer layer 1 in the liquid flow detection sensor is made of a plastic film.

[0012] Optionally, the outer layer 1 in the liquid flow detection sensor comprises an outer layer body 101, a terminal mold 102 and an inner layer film 103.

[0013] The outer layer body 101 is a PVC insulation layer, which plays a role of fixing and supporting the electrodes.

[0014] The terminal mold 102 is located at the protection position of the terminal.

[0015] The inner layer film 103 is a PVC insulation layer, which plays a role of isolation.

[0016] Optionally, the thickness of the outer layer body 101 and the inner layer film 103 in the liquid flow detection sensor is 0.1 cm.

[0017] Optionally, the inner layer 2 in the liquid flow detection sensor comprises a first electrode 201, a second electrode 202 and a terminal 203.

[0018] The first electrode 201 is a U-shaped electrode, which forms a detection circuit with the second electrode 202.

[0019] The second electrode 202 is a U-shaped electrode, which forms a detection circuit with the first electrode 201.

[0020] The terminal 203 is connected to a microprocessor through a lead wire to realize detection.

[0021] Optionally, the first electrode 201 and the second electrode 202 in the liquid flow detection sensor are both copper electrodes.

[0022] Optionally, the utility model discloses liquid flow detection sensor still includes microprocessor, the microprocessor is given two electrodes with pulse signal to excite, and the voltage between first electrode 201 and second electrode 202 in inner layer 2 changes with excitation time and reaches stable saturation after a certain time, and the voltage variation rate between two electrodes is directly proportional to the liquid coverage amount of flowing.

[0023] In conclusion, the utility model bases on clinical practice, and designs a novel liquid flow detection sensor, and the liquid flow detection sensor is simple in structure, low in cost, convenient to use, is suitable for cooperating with intelligent urine collector, can realize comprehensive, accurate, objective urination data acquisition and effective incontinence condition intelligent evaluation, has higher practicality and good market popularization prospect. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme of the utility model embodiment, the following briefly introduces the drawing needed to be used in embodiment, and obviously, the drawing in the following description is only for the specific embodiment of the utility model, and for the person skilled in the art, can obtain other drawings according to the following drawing without creating the creative labor.

[0025] Figure 1 It is the cross section view of the utility model liquid flow detection sensor.

[0026] Figure 2 It is the top view of the utility model liquid flow detection sensor.

[0027] Figure 3 It is the side view of the utility model liquid flow detection sensor.

[0028] Figure 4 It is the overall appearance schematic diagram of the utility model liquid flow detection sensor product.

[0029] Figure 5 It is the outer layer structure cross section view of the utility model liquid flow detection sensor.

[0030] Figure 6 It is the top view of the outer layer structure of the utility model liquid flow detection sensor.

[0031] Figure 7 It is the side view of the outer layer structure of the utility model liquid flow detection sensor.

[0032] Figure 8 It is the outer layer structure schematic diagram of the utility model liquid flow detection sensor product.

[0033] Figure 9 It is the inner layer structure cross section view of the utility model liquid flow detection sensor.

[0034] Figure 10 It is the top view of the inner layer structure of the liquid flow detection sensor of the utility model.

[0035] Figure 11 It is the side view of the inner layer structure of the liquid flow detection sensor of the utility model.

[0036] Figure 12 It is the schematic diagram of the inner layer structure of the liquid flow detection sensor product of the utility model.

[0037] Reference signs:

[0038] 1-outer layer; 101-outer layer main body; 102-terminal mold; 103-inner layer film; 2-inner layer; 201-first electrode; 202-second electrode; 203-wiring terminal. DETAILED DESCRIPTION

[0039] The technical solutions of the utility model will be described clearly and completely through specific specific examples. Obviously, the described embodiments are only some of the embodiments of the utility model, not all the embodiments. Those skilled in the art can easily understand other advantages of the utility model from the content disclosed in the specification. The utility model can also be implemented or applied through other different specific embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the utility model.

[0040] Before further describing the specific embodiments of the utility model, it should be understood that the protection scope of the utility model is not limited to the following specific embodiments; The terms used in the embodiments of the utility model are for describing the specific embodiments, not for limiting the protection scope of the utility model.

[0041] Unless otherwise defined, all technical and scientific terms used in the utility model have the same meaning as that generally understood by those skilled in the art. In addition to the specific methods, devices, materials used in the embodiments, any method, device and material of the prior art similar or equivalent to the method, device and material described in the embodiments of the utility model can also be used to implement the utility model according to the master of the prior art of those skilled in the art and the description of the utility model.

[0042] In the utility model, all devices and materials can be obtained from commercial channels or commonly used in the industry unless otherwise specified.

[0043] A liquid flow detection sensor

[0044] The purpose of the embodiment is to provide a liquid flow detection sensor which is simple in structure, convenient to use and accurate and reliable.

[0045] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme.

[0046] The liquid flow detection sensor is designed as follows:

[0047] Capacitive detection is adopted, when liquid flows through the liquid flow detection sensor, electrical performance changes are caused, and by detecting the electrical change amount, the liquid flow can be calibrated. Further, by recording the time, duration and flow of liquid flowing through the sensor, the time and urine volume of patient enuresis can be obtained, which is provided for clinical diagnosis and treatment.

[0048] As shown in Figures 1-4 The overall structure of the liquid flow detection sensor includes two parts, an outer layer 1 which is an isolation protection layer and an inner layer 2 which is a sensing circuit.

[0049] (1) Outer layer 1

[0050] The outer layer 1 is made of plastic film, and the outer layer 1 is attached to the outer surface of the inner layer 2 to play an isolation protection role.

[0051] Preferably, as shown in Figures 5-8 The outer layer 1 includes an outer layer body 101, a terminal mold 102 and an inner layer film 103.

[0052] The outer layer body 101 is a PVC insulation layer with a thickness of 0.1 cm, which plays a role of fixing electrodes and supporting.

[0053] The terminal mold 102 is located at the protection of the terminal.

[0054] The inner layer film 103 is a PVC insulation layer with a thickness of 0.1 cm, which plays a role of isolation.

[0055] (2) Inner layer 2

[0056] The inner layer 2 is designed as two electrodes which are closely attached to the outer layer 1 in a specific arrangement and can detect multi-directional liquid contact (flowing through) the outer layer 1. By detecting the capacitance change between the electrodes, the liquid flow can be finally calibrated.

[0057] Preferably, as shown in Figures 9-12 The inner layer 2 includes a first electrode 201, a second electrode 202 and a terminal 203.

[0058] The first electrode 201 is a U-shaped copper electrode, which forms a detection circuit with the second electrode 202.

[0059] The second electrode 202 is a U-shaped copper electrode, which forms a detection circuit with the first electrode 201.

[0060] The terminal 203 is connected to the microprocessor by a lead wire to realize detection.

[0061] The sensor structure and its electrical properties are specifically designed in the application, and when liquid flows through the inner layer film 103, the electrical properties between the first electrode 201 and the second electrode 202 located in the inner layer 2 change.

[0062] The microprocessor system excites the electrodes by a pulse signal, and the voltage between the first electrode 201 and the second electrode 202 in the inner layer 2 changes with the excitation time and reaches a stable saturation after a certain time. The voltage change rate (time to reach stable saturation) on the electrode is proportional to the coverage of the liquid flowing through.

[0063] The coverage of the liquid flowing through can be measured by measuring the voltage change rate (time to reach stable saturation) on the electrode. By accumulating multiple measurements, the liquid flow, flow rate and total flow can be measured. The measurement results can be stored in the microprocessor system and then transmitted to the background server system, so that the data of the patient's enuresis time, flow, frequency, etc. can be recorded and analyzed for clinical diagnosis and treatment decision-making.

[0064] The preferred specific embodiments and examples of the application are described in detail above, but the application is not limited to the above-mentioned embodiments and examples, and various changes can be made within the knowledge of those skilled in the art without departing from the concept of the application.

Claims

1. A liquid flow detecting sensor, characterized by, The liquid flow detection sensor is a double-layer structure capacitive detection device, comprising an outer layer (1) and an inner layer (2); The outer layer (1) is an isolation protective layer, which is attached to the outer surface of the inner layer (2) to play an isolation protection role; The inner layer (2) is a sensing circuit comprising two electrodes, which is closely attached to the outer layer (1) in a specific arrangement; When liquid flows through the outer layer (1) of the liquid flow detection sensor, the electrical properties between the two electrodes in the inner layer (2) change, and the two electrodes in the inner layer (2) detect the amount of electrical change and mark it as liquid flow.

2. The liquid flow detection sensor according to claim 1, wherein The outer layer (1) is made of plastic film.

3. The liquid flow detection sensor according to claim 1, wherein The outer layer (1) comprises an outer layer body (101), a terminal mold (102), and an inner layer film (103); wherein: The outer layer body (101) is a PVC insulation layer, which plays a role in fixing and supporting the electrode; The terminal mold (102) is located at the connection terminal protection position; The inner layer film (103) is a PVC insulation layer, which plays an isolation role.

4. The liquid flow detecting sensor according to claim 3, wherein The thickness of the outer layer body (101) and the inner layer film (103) is 0.1 cm.

5. The liquid flow detection sensor according to claim 1, wherein The inner layer (2) comprises a first electrode (201), a second electrode (202), and a connection terminal (203); wherein: The first electrode (201) is a U-shaped electrode, which forms a detection circuit with the second electrode (202); The second electrode (202) is a U-shaped electrode, which forms a detection circuit with the first electrode (201); The connection terminal (203) is connected to a microprocessor through a lead wire to realize detection.

6. The liquid flow detection sensor according to claim 5, wherein The first electrode (201) and the second electrode (202) are both copper electrodes.

7. The liquid flow detection sensor according to claim 1, wherein The liquid flow detection sensor further comprises a microprocessor, which excites the two electrodes through a pulse signal. The voltage between the first electrode (201) and the second electrode (202) in the inner layer (2) changes with the excitation time and reaches a stable saturation after a certain time. The voltage change rate between the two electrodes is proportional to the liquid coverage amount.

Images