Structure for detecting conductivity of sample at low cost

Abstract

The utility model relates to the technical field of medical detection corollary equipment, in particular to a low-cost structure for detecting the conductivity of a sample. Comprising a control module and an auxiliary module, the auxiliary module comprises a circuit board, a cable and an insulating rubber hose, the whole structure can reduce the number of parts, a conductivity cell, used for measuring the conductivity of a sample, of a sample collection section can achieve a transparent pipeline structure, cost reduction is facilitated, and the two ends are further directly connected in a sleeve mode; and finally, circuit board parts are used for connecting the electrode connectors at the two ends of the conductance cell, so that the circuit board parts can be used as series connection pieces of the whole conductivity detection structure, effective conductive connection between detection signals at the two ends of the conductance cell and a detection upper computer during detection can be ensured, the detection effect is improved, and the detection efficiency is improved in the use process. The cost can be reduced, and a better test effect can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of medical detection supporting equipment, in particular to a structure for detecting the conductivity of a detection sample at low cost. Background Art

[0002] Urine test is one of the three routine items in modern medical clinical tests. An automatic urine formed element analyzer is used to automatically identify or manually assist in identifying the formed elements in urine, and the identification results are used to automatically identify or manually assist in identifying the diagnosis and differential diagnosis of kidney and urinary tract diseases, and the judgment of the severity and prognosis of diseases. The automatic urine formed element analyzer mainly includes a conductivity sensor module, a liquid path module, an optical module, a mechanical module, a circuit control module, analysis and processing software, a display module, a printing module, etc. Among them, the conductivity sensor structure module for detecting the fluid is the main core of the equipment measurement and test data. At present, most of the conductivity sensor structures are manual temperature compensation and immersing two electrodes into the fluid to be measured, and integrating two electrodes into the fluid to be measured. The disadvantage of the former is that the temperature coefficient cannot be set, and the disadvantage of the latter is that when foreign substances adhere to the electrode surface or the electrode surface is corroded, an error in the measured value caused by a change in the polarization capacitance will occur. Neither of them is very suitable in terms of safety, environmental protection, structure and installation in modern technology.

[0003] Some other conductivity sensor structures are made by machining expensive parts into parts. For example, the signal collection metal ends at both ends use expensive conductive metal materials and the middle insulating materials are machined. Limited by the limited sample volume, the pipeline diameter requirement is very small, only 0.8 - 1.2 mm, and the processing difficulty is high and the cost is high. To ensure the effective connection and sealing between the electrode end and the middle non-metallic material, it is necessary to use thread fitting and sealing glue to ensure firm connection and sealing, resulting in complex assembly, high difficulty and high cost. Therefore, it can be seen from the combination of the three that such structures have extremely high costs.

[0004] In view of the above situation, the purpose of this application is to provide a structure for detecting the conductivity of a detection sample at low cost, which is simple, reliable and low-cost. Content of the Utility Model

[0005] The purpose of the utility model is to provide a structure for detecting the conductivity of a detection sample at low cost, which can reduce costs and obtain better test effects during use.

[0006] To achieve the above purpose, the utility model provides a structure for detecting the conductivity of a detection sample at low cost, including a control module and also including an auxiliary module;

[0007] The auxiliary module includes a circuit board, a cable, and an insulating rubber tube. The circuit board is electrically connected to the control module. The cable is respectively connected to the control module and the output connector of the circuit board. The insulating rubber tube is arranged on one side of the electrode device, and the electrode device is fixed on both sides of the circuit board.

[0008] Among them, the circuit board is a printed circuit board.

[0009] Among them, the electrode device includes a first electrode head and a second electrode head. The first electrode head and the second electrode head are respectively attached to both ends of the circuit board. The areas of the fixed contact surfaces between the first electrode head and the second electrode head and the circuit board are respectively covered with copper metal. The first electrode head and the second electrode head are respectively detachably connected to the insulating rubber tube.

[0010] Among them, through holes are respectively arranged in the middle of the first electrode head and the second electrode head, and there is a flat surface on the outside.

[0011] Among them, seamless steel pipes are respectively arranged in the through holes in the middle of the first electrode head and the second electrode head.

[0012] For a low-cost structure for detecting the conductivity of a sample in the present utility model, the circuit board is electrically connected to the control module, the cable is respectively connected to the control module and the output connector of the circuit board, the insulating rubber tube is arranged on one side of the electrode device, and the electrode device is fixed on both sides of the circuit board. The overall structure of this application can reduce the number of parts. The conductance cell for measuring the conductivity of the sample in the sample collection section can achieve a transparent pipeline structure, which is conducive to cost reduction. Further, the two ends are directly connected by a casing method, and the production assembly and maintenance are simple. Finally, this application uses the circuit board parts to connect the electrode joints at both ends of the conductance cell, which can not only be used as a series component of the entire conductivity detection structure, but also ensure the effective electrical connection between the detection signals at both ends of the conductance cell and the detection host computer during detection, which is conducive to improving the detection effect. Furthermore, during the use process, cost reduction can be achieved and better test results can be obtained. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0014] Figure 1 It is the overall structure schematic diagram of the low-cost structure for detecting the conductivity of a sample in the present utility model.

[0015] Figure 2 It is the cross-sectional view of the first electrode head of the present utility model.

[0016] Figure 3 It is the working principle diagram of the low-cost structure for detecting the conductivity of a sample in the present utility model.

[0017] In the figure: 101 - control module, 102 - circuit board, 103 - cable, 104 - insulating rubber tube, 105 - circuit board output connector, 106 - first electrode head, 107 - second electrode head. Detailed implementation manners

[0018] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0019] As Figures 1 to 3 shown, wherein Figure 1 is a schematic diagram of the overall structure of the structure for detecting the conductivity of a sample at low cost, Figure 2 is a cross-sectional view of the first electrode head 106, Figure 3 is a working principle diagram of the structure for detecting the conductivity of a sample at low cost. The present invention provides a structure for detecting the conductivity of a sample at low cost, including a control module 101 and an auxiliary module. The auxiliary module includes a circuit board 102, a cable 103, and an insulating rubber tube 104. The electrode device includes a first electrode head 106 and a second electrode head 107. Through the foregoing solution, during the use process, the cost can be reduced and a better test effect can be obtained. It can be understood that the foregoing solution can reduce the cost and improve the detection effect.

[0020] In this embodiment, the control module 101 is used for data processing operations and display.

[0021] Among them, the circuit board 102 is electrically connected to the control module 101. The cable 103 is respectively connected to the control module 101 and the circuit board output connector 105. The insulating rubber tube 104 is arranged on one side of the electrode device. The electrode device is fixed on both sides of the circuit board 102. The circuit board output connector 105 is arranged on the circuit board 102. One end of the cable 103 is electrically connected to the control module 101, and the other end is electrically connected to the circuit board output connector 105. The electrode device is fixed on both sides of the circuit board 102 for realizing the installation and fixation of the insulating rubber tube 104. The insulating rubber tube 104 is a transparent tube.

[0022] Secondly, the circuit board 102 is a printed circuit board. The circuit board 102 is made of a printed circuit board to realize structural optimization. It only consists of the circuit output connector 105 and the substrate, without other redundant components.

[0023] Then, the electrode device includes a first electrode head 106 and a second electrode head 107. The first electrode head 106 and the second electrode head 107 are respectively pressed against both ends of the circuit board 102. The fixed contact surface areas of the first electrode head 106 and the second electrode head 107 with the circuit board 102 are respectively coated with copper metal. The first electrode head 106 and the second electrode head 107 are respectively detachably connected to the insulating rubber tube 104. When the first electrode head 106 and the second electrode head 107 are installed, they are pressed against both ends of the circuit board 102 and are installed by welding or screw fastening, and then electrical connection is achieved. The fixed contact surface areas of the circuit board 102 with the first electrode head 106 and the second electrode head 107 are coated with copper metal with good conductivity. The contact surfaces of the first electrode head 106 and the second electrode head 107 with the circuit board 102 are processed into planes to ensure that they can be closely attached to the copper-clad surface of the circuit board 102 to ensure good electrical conductivity. The copper-clad areas at both ends of the circuit board 102 are not electrically connected to each other but are respectively connected to the connector pins on the circuit board 102. The output connector 105 of the circuit board conducts the AC frequency conversion signal of the control module 101 controlled by conductivity through the cable 103 to the sample conductivity cell liquid flow through the first electrode head 106 and the second electrode head 107. The electrical signal generated after passing through the conductivity cell liquid flow transmits the collected information to an external control circuit calculator. Finally, after program logic operation and corresponding processing and conversion, the detection result is output and can be presented through a human-machine interface.

[0024] Further, through holes are respectively provided in the middle of the first electrode head 106 and the second electrode head 107, and there are flat surfaces on the outside. The through holes provided in the middle of the first electrode head 106 and the second electrode head 107 are both circular.

[0025] Finally, seamless steel pipes are respectively provided in the through holes in the middle of the first electrode head 106 and the second electrode head 107. The middle parts of the first electrode head 106 and the second electrode head 107 are through holes, and there are flat surfaces on the outside. A section of seamless steel pipe is passed through the middle through holes. Laser welding is used to connect the steel pipe to the external parts of the first electrode head 106 and the second electrode head 107 and ensure good electrical conductivity. The two ends of the steel pipe can be quickly connected to the insulating rubber tube 104 in the liquid path pipeline. After the first electrode head 106 and the second electrode head 107 are fixed to the circuit board 102, the insulating rubber tube 104 is respectively sleeved on the steel pipes of the first electrode head 106 and the second electrode head 107 to ensure that the sample liquid can be smoothly connected to the separated electrode joint steel pipe to ensure the integrity of the overall liquid path. The inner hole cavity part of the middle insulating rubber tube 104 is used for the sample conductivity cell for measurement.

[0026] When using the present utility model to achieve cost reduction and obtain better test results, during measurement, the circuit board output connector 105 conducts the AC variable frequency signal of the control module 101 controlled by the conductivity program to the sample conductance cell liquid flow through the cable 103, the first electrode head 106 and the second electrode head 107. The electrical signal generated after passing through the conductance cell liquid flow transmits the collected information to an external control circuit calculator, and finally, after program logic operation and corresponding processing and conversion, the detection result is output and can be presented through the human-machine interface. Further, the circuit board 102 adopts a printed circuit board to optimize the structure. It is only composed of the circuit output connector 105 and the substrate, without other redundant components, so that the overall structure can reduce the number of parts. Then, the conductance cell for collecting the sample segment to measure the sample conductivity can achieve a transparent pipeline structure through the insulating rubber tube 104, which is beneficial to cost reduction. Further, both ends of the insulating rubber tube 104 are directly connected in a sleeve manner, and the production assembly and maintenance are simple. Finally, in this application, the circuit board 102 connects the electrode connectors at both ends of the conductance cell, which can not only be used as a series component of the entire conductivity detection structure but also ensure an effective conductive connection between the detection signals at both ends of the conductance cell and the detection host computer during detection, which is beneficial to improving the detection effect. Furthermore, during the use process, cost reduction can be achieved and better test results can be obtained.

[0027] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. A structure for low-cost detection of the conductivity of a sample, including a control module, characterized in that, it further includes an auxiliary module; The auxiliary module includes a circuit board, a cable, and an insulating rubber tube. The circuit board is electrically connected to the control module. The cable is respectively connected to the control module and the output connector of the circuit board. The insulating rubber tube is arranged on one side of the electrode device, and the electrode device is fixed on both sides of the circuit board.

2. The structure for low-cost detection of the conductivity of a sample according to claim 1, characterized in that, the circuit board is a printed circuit board.

3. The structure for low-cost detection of the conductivity of a sample according to claim 1, characterized in that, the electrode device includes a first electrode head and a second electrode head. The first electrode head and the second electrode head are respectively closely attached to both ends of the circuit board. The areas of the fixed contact surfaces of the first electrode head and the second electrode head with the circuit board are respectively covered with copper metal. The first electrode head and the second electrode head are respectively detachably connected to the insulating rubber tube.

4. The structure for low-cost detection of the conductivity of a sample according to claim 3, characterized in that, through holes are respectively arranged in the middle of the first electrode head and the second electrode head, and there are flat surfaces on the outside.

5. The structure for low-cost detection of the conductivity of a sample according to claim 4, characterized in that, seamless steel pipes are respectively arranged in the through holes in the middle of the first electrode head and the second electrode head.

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