CN211652666U - Sensor module - Google Patents
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- CN211652666U CN211652666U CN202020075106.9U CN202020075106U CN211652666U CN 211652666 U CN211652666 U CN 211652666U CN 202020075106 U CN202020075106 U CN 202020075106U CN 211652666 U CN211652666 U CN 211652666U
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Abstract
The utility model provides a sensor module. A sensor module, comprising: a main body portion having at least one liquid flow path; the substrate is detachably covered on the main body part and seals the liquid flow path, the substrate is provided with a detection unit, at least one part of the detection unit extends into the liquid flow path for detection, and the detection unit is provided with a plurality of reaction electrodes for detecting different substances. The utility model provides an among the prior art compound sensor have the problem that manufacturing cost is high.
Description
Technical Field
The utility model relates to an electrochemical sensor equipment technical field particularly, relates to a sensor module.
Background
The concentration of various substances in human blood influences the realization of various functions in the human body, directly reflects the health level of the human body, provides basis for the diagnosis of patients by detecting the concentration of various substances, and a plurality of substances can be measured by an electrochemical sensor.
The existing electrochemical sensor has the advantages that all parameters are independent, when a plurality of parameters are tested, a plurality of sensor modules are required to be assembled together, each sensor module is provided with a sealing ring, a liquid path is formed through the sealing ring during assembly, and the design is troublesome for a user and is easy to cause liquid leakage of the liquid path due to assembly errors. For the composite sensor module capable of testing a plurality of parameters, a plurality of manufactured sensor modules are integrated, so that the production process is complex, time and labor are consumed, and the production cost is high.
That is to say, the composite sensor in the prior art has the problem of high production cost.
SUMMERY OF THE UTILITY MODEL
A primary object of the present invention is to provide a sensor module to solve the problem of high production cost of the compound sensor in the prior art.
In order to achieve the above object, according to an aspect of the present invention, there is provided a sensor module including: a main body portion having at least one liquid flow path; the substrate is detachably covered on the main body part and seals the liquid flow path, the substrate is provided with a detection unit, at least one part of the detection unit extends into the liquid flow path for detection, and the detection unit is provided with a plurality of reaction electrodes for detecting different substances.
Further, the main body portion includes: a housing having a receiving groove; and the connecting plate is arranged in the accommodating groove and provided with a liquid flow path, and the substrate is attached to the connecting plate to seal the liquid flow path.
Furthermore, the shell is made of hard glue plastic materials, and the connecting plate is made of soft glue plastic materials.
Further, the connecting plate includes that the liquid way connects, and the liquid way connects for a plurality ofly, and a plurality of liquid way connect and are located the both ends of liquid flow path respectively, and the liquid way connects the tank bottom that can pass the holding tank and stretch out.
Furthermore, the shell is provided with a limiting cylinder extending outwards, and the liquid path joint penetrates through the groove bottom of the accommodating groove and extends into the limiting cylinder.
Further, the shell has the stabilizer blade that outwards stretches out, and the stabilizer blade is a plurality of, and a plurality of stabilizer blades set up around the circumference interval of shell, and the length that the stabilizer blade stretches out is greater than the length that spacing section of thick bamboo stretches out.
Further, the cell wall of holding tank has the buckle with the base plate lock, and the buckle is a plurality of, and a plurality of buckles set up around the circumference interval of holding tank.
Furthermore, the tank bottom of holding tank has dodges the hole, dodges the hole and the extending direction of liquid flow path is the same, and dodges the hole and establishes with the connecting plate interval.
Further, the plurality of reaction electrodes includes at least one reference electrode and at least two experimental electrodes, and the experimental electrodes detect different substances.
Further, when the liquid flow paths are multiple, one end of each liquid flow path is communicated to form an outflow end, and at least one liquid flow path is a reference flow path and at least another liquid flow path is an experiment flow path.
Further, the plurality of reaction electrodes includes at least one reference electrode and at least two experiment electrodes, the reference electrode extends into the reference flow path, and the experiment electrode extends into the experiment flow path.
Further, the substrate further includes: a base plate; the insulating layer, the insulating layer sets up on the bottom plate, and at least a part of detecting element sets up on the insulating layer.
Further, the detection unit includes: a plurality of reaction electrodes arranged at intervals in the insulating layer, the reaction electrodes being in contact with the liquid in the liquid flow path; the plurality of leads are arranged in one-to-one correspondence with the reaction electrodes, and one end of each lead is connected with the reaction electrodes; and a plurality of contacts are arranged, the contacts and the reaction electrodes are arranged in a one-to-one correspondence manner, and the other end of each wire is connected with the contacts.
Furthermore, the avoidance hole of the main body part is arranged corresponding to the contact so as to expose the contact.
Further, each reaction electrode is coated with a different sensitive film to detect the concentration of different substances in the liquid flow path.
By applying the technical scheme of the utility model, the sensor module comprises a main body part and a substrate, wherein the main body part is provided with at least one liquid flow path; the substrate is detachably covered on the main body part and seals the liquid flow path, the substrate is provided with a detection unit, at least one part of the detection unit extends into the liquid flow path for detection, and the detection unit is provided with a plurality of reaction electrodes for detecting different substances.
The liquid flow path is arranged on the main body part, so that blood can flow in the liquid flow path, and the substrate cover is arranged on the main body part to seal the liquid flow path, so that the liquid flow path forms a closed space, the liquid in the liquid flow path is prevented from flowing out of the sensor module, and the working stability of the liquid flow path is improved. The detection unit detects the content of the substance in the liquid so that the sensor module realizes the measurement function. The setting of a plurality of reaction electrodes for detecting element can be simultaneously to the content of a plurality of materials of liquid detection, has realized that a sensor module just can measure the content of multiple material, and the preparation of the sensor module of being convenient for has reduced the cost of labor.
Drawings
The accompanying drawings, which form a part of the present application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 shows a schematic view of the overall structure of a sensor module according to an alternative embodiment of the invention; and
FIG. 2 shows an exploded view of FIG. 1;
FIG. 3 shows an exploded view of the body portion of FIG. 2;
FIG. 4 shows a schematic view of the structure of the substrate of FIG. 2;
fig. 5 shows an exploded view of fig. 4.
Wherein the figures include the following reference numerals:
10. a main body portion; 11. a liquid flow path; 12. a housing; 121. accommodating grooves; 122. a limiting cylinder; 123. a support leg; 124. buckling; 125. avoiding holes; 13. a connecting plate; 131. a liquid path joint; 20. a substrate; 21. a reaction electrode; 211. a reference electrode; 212. an experimental electrode; 22. a base plate; 23. an insulating layer; 24. a wire; 25. and (4) a contact.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
In the present application, where the contrary is not intended, the use of directional words such as "upper, lower, top and bottom" is generally with respect to the orientation shown in the drawings, or with respect to the component itself in the vertical, perpendicular or gravitational direction; likewise, for ease of understanding and description, "inner and outer" refer to the inner and outer relative to the profile of the components themselves, but the above directional words are not intended to limit the invention.
In order to solve the problem that compound sensor has high production cost among the prior art, the utility model provides a sensor module.
As shown in fig. 1 to 5, the sensor module includes a main body portion 10 and a substrate 20, the main body portion 10 having at least one liquid flow path 11; the substrate 20 is detachably provided on the main body 10, and the substrate 20 seals the liquid flow path 11, and the substrate 20 has a detection unit, at least a part of which protrudes into the liquid flow path 11 for detection, and the detection unit has a plurality of reaction electrodes 21 for detecting different substances.
By providing the liquid channel 11 on the main body 10 to allow blood to flow in the liquid channel 11, and providing the substrate 20 on the main body 10 to seal the liquid channel 11, the liquid channel 11 forms a closed space, so that the liquid in the liquid channel is prevented from flowing out of the sensor module, and the stability of the operation of the liquid channel 11 is increased. The detection unit detects the content of the substance in the liquid so that the sensor module realizes the measurement function. The arrangement of the plurality of reaction electrodes 21 enables the detection unit to detect the content of various substances in one liquid at the same time, so that the content of various substances can be measured by one sensor module, the sensor module is convenient to manufacture, and the labor cost is reduced.
As shown in fig. 3, the main body portion 10 includes a housing 12 and a connecting plate 13, the housing 12 having a receiving groove 121; the connection plate 13 is mounted in the accommodation groove 121, the connection plate 13 has the liquid flow path 11, and the substrate 20 is attached to the connection plate 13 to seal the liquid flow path 11. By providing the main body portion 10 in two parts, the substrate 20 can be sealed at the opening of the housing groove 121, and the liquid flow path 11 is sealed, so that the liquid flow path 11 is ensured to be airtight. The arrangement of the accommodation groove 121 provides a placement space for the connection plate 13.
Specifically, the housing 12 is made of a hard plastic material, and the connecting plate 13 is made of a soft plastic material. The shell 12 is made of ebonite plastic material so that the shell 12 has certain hardness, is not easy to deform to ensure that the sensor module can work stably, and can protect the connecting plate 13. The connecting plate 13 is made of soft plastic material, so that the connecting plate 13 has a certain deformation amount, and after the substrate 20 is mounted on the shell 12, the connecting plate 13 and the substrate 20 are in interference fit, so that the tightness between the substrate 20 and the liquid flow path 11 is ensured, the liquid leakage phenomenon of the liquid flow path 11 is avoided, and the working stability of the sensor module is improved.
The housing 12 has the characteristics of impact resistance and high mechanical strength to support the sensor module, and the hard rubber plastic material can be acrylic, polycarbonate, polypropylene and the like. The connection plate 13 has a suitable flexibility to generate a certain amount of deformation to contact the substrate 20 to seal the liquid flow path 11, and the flexible plastic material may be polyurethane, rubber, or the like.
As shown in fig. 3, the connection plate 13 includes a plurality of liquid path joints 131, the liquid path joints 131 are respectively located at both ends of the liquid flow path 11, and the liquid path joints 131 can protrude through the groove bottoms of the accommodation grooves 121. The liquid path joint 131 is arranged to enable the liquid flow path 11 to be connected with other equipment, so that liquid enters the liquid flow path 11 through other equipment, and the measurement function of the sensor module is realized. The liquid path joints 131 function to enable the liquid in the liquid flow paths 11 to flow, and the liquid flows into the liquid flow paths 11 from one of the liquid path joints 131 and flows out from the liquid path joint 131 at the other end of the liquid flow paths 11 to enable the liquid in the liquid flow paths 11 to flow out. This arrangement allows fluid to be placed in the fluid flow path 11 or the test fluid to be replaced.
As shown in fig. 1, the housing 12 has a limiting cylinder 122 protruding outward, and the liquid path joint 131 penetrates through the groove bottom of the receiving groove 121 and protrudes into the limiting cylinder 122. The arrangement of the limiting cylinder 122 can limit the liquid path joint 131, and the liquid path joint 131 is prevented from shaking, so that the liquid path joint 131 works stably. Because the liquid path joint 131 is soft material, it is difficult to dock with other equipment, and the setting of spacing section of thick bamboo 122 can play the effect of location to be convenient for the butt joint of liquid path joint 131 with other equipment, be convenient for the installation between sensor module and other equipment.
As shown in fig. 1, the housing 12 has a plurality of legs 123 extending outward, the plurality of legs 123 are spaced around the circumference of the housing 12, and the length of the legs 123 is greater than the length of the limiting cylinder 122. The feet 123 are arranged so that at least a portion of the housing 12 is spaced from the surface to be placed by a certain air gap to ensure a stable connection between the sensor module and other equipment. And a plurality of legs 123 spaced around the periphery of the housing 12 can stably support the sensor module on a flat surface.
As shown in fig. 2 and 3, the groove wall of the accommodating groove 121 has a plurality of snaps 124 that snap to the substrate 20, and the plurality of snaps 124 are arranged at intervals around the circumferential direction of the accommodating groove 121. The snap 124 is provided to detachably mount the substrate 20 and the receiving groove 121, and the snap 124 directly engages with the edge of the top surface of the substrate 20.
It should be noted that the connecting plate 13 is slightly lower than the latch 124 to ensure that the base plate 20 is attached to the housing 12 and the base plate 20 is attached to the connecting plate 13.
As shown in fig. 1 to 3, the groove bottom of the accommodating groove 121 has a relief hole 125, the extension direction of the relief hole 125 is the same as that of the liquid flow path 11, and the relief hole 125 and the connecting plate 13 are spaced apart from each other. The avoiding holes 125 are spaced apart from the connecting plate 13 such that the avoiding holes 125 correspond to the contacts 25 on the substrate 20, thereby facilitating other structures to pass through the avoiding holes 125 to be matched with the contacts 25.
As shown in fig. 4, the plurality of reaction electrodes 21 includes at least one reference electrode 211 and at least two experiment electrodes 212, and the experiment electrodes 212 detect different substances. The reference electrode 211 and the experiment electrode 212 form a reference therebetween, so that the experiment electrode 212 can accurately measure.
As shown in fig. 3, when the liquid flow paths 11 are plural, one end of each liquid flow path 11 is connected to form an outflow end, at least one liquid flow path 11 is a reference flow path, and at least another liquid flow path 11 is an experimental flow path. The liquid in the reference flow path is a reference liquid, and the liquid in the experiment flow path is a test liquid.
Alternatively, the fluid to be tested may be blood.
As shown in fig. 4, the plurality of reaction electrodes 21 includes at least one reference electrode 211 and at least two experiment electrodes 212, the reference electrode 211 extends into the reference flow path, and the experiment electrodes 212 extend into the experiment flow path. Reference electrode 211 measures the substance of the reference fluid in the reference flow path, while test electrode 212 extends into the test flow path to contact the fluid to be tested for measurement.
In another embodiment, not shown, the liquid flow path 11 is a single one, and the reference electrode 211 and the test electrode 212 both extend into the liquid flow path 11, and the liquid in the liquid flow path 11 is the liquid to be tested. And the liquid measured by the reference electrode 211 at this time comes from the inside of the reference electrode 211 instead of the liquid to be measured, so that the reference electrode 211 forms a reference with the experimental electrode 212.
As shown in fig. 4, the substrate 20 further includes a base plate 22 and an insulating layer 23, the insulating layer 23 is disposed on the base plate 22, and at least a portion of the sensing unit is disposed on the insulating layer 23. The insulating layer 23 is formed by printing the insulating paste on the base plate 22 by screen printing, so that the plurality of reaction electrodes 21 can be prevented from conducting electricity with each other due to the aqueous solution contained in the liquid path, and the stability of the operation of the reaction electrodes 21 is increased.
The insulating layer 23 may be a single layer of material or may be the same material as the base plate 22.
As shown in fig. 4 and 5, the detecting unit includes a plurality of reaction electrodes 21, a lead wire 24, and a contact 25, the plurality of reaction electrodes 21 are disposed at intervals in an insulating layer 23, and the reaction electrodes 21 are in contact with the liquid in the liquid flow path 11; the number of the leads 24 is multiple, the leads 24 are arranged in one-to-one correspondence with the reaction electrodes 21, and one end of each lead 24 is connected with the reaction electrode 21; the number of the contacts 25 is plural, the plural contacts 25 are provided in one-to-one correspondence with the reaction electrodes 21, and the other end of each lead 24 is connected to the contact 25. The contact 25 plays a role of connecting with an external circuit, and the reaction electrode 21 is connected with the contact 25 through the lead 24, so that the result measured by the reaction electrode 21 is fed back to the external circuit. The contacts 25, the wires 24 and the reaction electrodes 21 are connected in a one-to-one correspondence so that one reaction electrode 21 detects one substance and is fed back to an external circuit separately. The reaction electrode 21, the lead 24 and the contact 25 are formed by printing conductive silver paste on the base plate 22 by means of screen printing.
Note that in the present application, the contact 25 is located outside the insulating layer 23, and the reaction electrode 21 is printed on the insulating layer 23.
Specifically, the escape hole 125 of the main body 10 is provided corresponding to the contact 25 so that the contact 25 is exposed. The arrangement of the avoiding hole 125 provides an avoiding space for the external circuit, so that the external circuit can contact with the contact 25 to realize electrical connection, thereby transmitting data to the external circuit.
Alternatively, each of the reaction electrodes 21 is coated with a different sensitive film to detect the concentration of a different substance in the liquid flow path 11. Different reaction electrodes 21 are plated with different sensitive films, and different sensitive films can penetrate different substances, so that each reaction electrode 21 can detect the concentration of different substances.
The substance detectable by the reaction electrode 21 may be potassium, sodium, calcium, chlorine, carbon dioxide, glucose, lactic acid, urea nitrogen, or the like.
In the present application, the reaction electrode 21 is treated with an oxidant (e.g., chromic acid solution) to generate a silver chloride layer, and then coated with a solid electrolyte layer and a sensitive membrane to form an electrochemical sensor, where the sensitive membrane is a selective permeable membrane for reference, potassium, sodium, calcium, chloride, and PH ions.
A manufacturing method of a sensor module, the manufacturing method manufacturing the sensor module, the manufacturing method comprising: integrally injection-molding a shell 12 of the sensor module and a connecting plate 13 of the sensor module by using a double-color injection mold; printing conductive silver paste on the bottom plate 22 of the sensor module by adopting screen printing to form a detection unit of the sensor module; the reaction electrode 21 of the detection unit is processed by an oxidant to form a silver oxide layer; coating a solid electrolyte layer and a sensitive film on the reaction electrode 21; an insulating layer 23 of the sensor module is formed by printing an insulating material on the base plate 22 to form the substrate 20 of the sensor module.
Two different plastics are injected and molded together by the double-color injection molding grinding tool to form the main body part 10, so that the shell 12 and the connecting plate 13 are integrally formed and are not easy to separate, and the shell 12 and the connecting plate 13 are convenient to manufacture. The solid electrolyte is coated on the reaction electrode 21 without filling the reaction electrode 21 with a liquid, reducing the size of the reaction electrode 21 and facilitating the integration of the reaction electrode 21 on the base plate 22.
Compared with the existing electrochemical sensor, the utility model discloses forming base plate 20 with the integration of a plurality of different electrochemical sensors on bottom plate 22, only needing to press base plate 20 and main part 10 together when the equipment just accomplished sensor module's preparation. Meanwhile, the main body part 10 is formed by injecting the hard plastic and the soft plastic through a double-color injection mold, and the main body part 10 has the characteristics of two plastics, so that the sensor module can be supported and protected, and a sealed liquid path can be formed between the sensor module and the substrate 20. The sensor module is produced by adopting the process, so that time and labor are saved, and the cost is reduced.
It is obvious that the above described embodiments are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular is intended to include the plural unless the context clearly dictates otherwise, and it should be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of features, steps, operations, devices, components, and/or combinations thereof.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are capable of operation in sequences other than those illustrated or described herein.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A sensor module, comprising:
a main body part (10), the main body part (10) having at least one liquid flow path (11);
the substrate (20), the base plate (20) is detachably arranged on the main body part (10) in a covering mode, the base plate (20) seals the liquid flow path (11), the base plate (20) is provided with a detection unit, at least one part of the detection unit extends into the liquid flow path (11) to carry out detection, and the detection unit is provided with a plurality of reaction electrodes (21) to detect different substances.
2. The sensor module according to claim 1, characterized in that the main body portion (10) comprises:
an outer case (12), the outer case (12) having a receiving groove (121);
a connection plate (13), the connection plate (13) being mounted in the accommodation groove (121), the connection plate (13) having the liquid flow path (11), the substrate (20) being disposed in abutment with the connection plate (13) to seal the liquid flow path (11).
3. Sensor module according to claim 2, in which the housing (12) is made of a hard plastic material and the connection plate (13) is made of a soft plastic material.
4. The sensor module according to claim 2, wherein the connection plate (13) includes a plurality of liquid path joints (131), the liquid path joints (131) are respectively located at both ends of the liquid flow path (11), and the liquid path joints (131) can protrude through the bottom of the groove of the accommodation groove (121).
5. The sensor module according to claim 4, characterized in that the housing (12) has an outwardly projecting limiting cylinder (122), the liquid connection (131) projecting through a groove base of the accommodating groove (121) into the limiting cylinder (122).
6. The sensor module according to claim 5, wherein the housing (12) has a plurality of legs (123) extending outwardly, the plurality of legs (123) being spaced apart around the circumference of the housing (12), the legs (123) extending a length greater than the length of the restraining canister (122).
7. The sensor module according to claim 2, wherein a groove wall of the receiving groove (121) has a plurality of snaps (124) that snap to the substrate (20), the plurality of snaps (124) being arranged at intervals around a circumference of the receiving groove (121).
8. The sensor module according to claim 2, wherein the groove bottom of the accommodating groove (121) has a relief hole (125), the extension direction of the relief hole (125) and the liquid flow path (11) is the same, and the relief hole (125) and the connecting plate (13) are spaced apart.
9. The sensor module according to any one of claims 1 to 8, wherein the plurality of reaction electrodes (21) comprises at least one reference electrode (211) and at least two test electrodes (212), the test electrodes (212) detecting different substances.
10. The sensor module according to any one of claims 1 to 8, wherein when the liquid flow paths (11) are plural, one end of each of the liquid flow paths (11) is communicated to form an outflow end, and at least one of the liquid flow paths (11) is a reference flow path and at least another one of the liquid flow paths (11) is an experimental flow path.
11. The sensor module according to claim 10, wherein the plurality of reaction electrodes (21) comprises at least one reference electrode (211) and at least two experiment electrodes (212), the reference electrode (211) extending into the reference flow path and the experiment electrodes (212) extending into the experiment flow path.
12. The sensor module according to any one of claims 1 to 8, characterized in that the substrate (20) further comprises:
a base plate (22);
an insulating layer (23), the insulating layer (23) being disposed on the base plate (22), at least a portion of the detection unit being disposed on the insulating layer (23).
13. The sensor module of claim 12, wherein the detection unit comprises:
the reaction electrodes (21), a plurality of the reaction electrodes (21) are arranged in the insulating layer (23) at intervals, and the reaction electrodes (21) are in contact with the liquid in the liquid flow path (11);
the number of the leads (24) is multiple, the leads (24) and the reaction electrodes (21) are arranged in a one-to-one correspondence manner, and one end of each lead (24) is connected with the reaction electrode (21);
the number of the contacts (25) is multiple, the contacts (25) and the reaction electrodes (21) are arranged in a one-to-one correspondence mode, and the other end of each lead (24) is connected with the contacts (25).
14. The sensor module according to claim 13, characterized in that the relief holes (125) of the main body (10) are arranged in correspondence with the contacts (25) so as to expose the contacts (25).
15. The sensor module according to any one of claims 1 to 8, wherein each of the reaction electrodes (21) is coated with a different sensitive film to detect the concentration of a different substance in the liquid flow path (11).
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