CN216484752U - Miniature electrochemical detection device - Google Patents
Miniature electrochemical detection device Download PDFInfo
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- CN216484752U CN216484752U CN202122347874.2U CN202122347874U CN216484752U CN 216484752 U CN216484752 U CN 216484752U CN 202122347874 U CN202122347874 U CN 202122347874U CN 216484752 U CN216484752 U CN 216484752U
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Abstract
The utility model provides a miniature electrochemical detection device, which comprises a device cover, a sensing unit and a device main body, wherein the sensing unit is arranged on the device cover; the top end of the device main body is provided with a signal spring pin; the sensing unit is used for being placed on the top end of the device main body and abutting against the signal spring needle; the device cover is detachably connected with the device main body; when the device cover is connected with the device main body, the sensing unit and the signal elastic needle are accommodated in the cavity of the device cover, and the sensing unit is elastically abutted against the signal elastic needle; the top end of the device cover is provided with an opening. The front side of the sensing unit of the miniature electrochemical detection device is provided with the sensor for sensing, and the back side of the sensing unit is used for fixing the sensing unit between the device cover and the device main body by applying acting force through the elastic needle, so that the sealing property of the device is enhanced, the sensing unit is convenient to replace, the application scene of the electrochemical detection device is expanded, the detection accuracy is improved, and the service life of the device is prolonged.
Description
Technical Field
The utility model relates to the technical field of electrochemical analysis and detection, in particular to a miniature electrochemical detection device.
Background
The electrochemical detection device has the advantages of small size, low cost, high expansibility and the like in practical application, and can be widely applied to on-site instant diagnosis, environmental monitoring and basic research because the electrochemical detection device can directly generate an electrochemical detection result by measuring an electrical signal. In general, electrochemical sensors in electrochemical detection devices need to be replaced frequently, so that the cost of use can be reduced by designing the sensors and detection circuits separately.
At present, a sensor and the device of the micro electrochemical detection device are usually connected in a plug-in mode, and due to the fact that the size of the device is small and a connecting port is arranged at one end of the sensor, poor contact between modules and incapability of sealing caused by installation size errors easily occur, and accordingly the situation that detection results are inaccurate is caused. In addition, in practical applications, the electrochemical detection device is often required to be placed in a liquid to be detected for electrochemical detection, and an interface module of the device with poor sealing is easily corroded by the immersed liquid to be detected, which greatly affects the service life and the application range of the device.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects that a detachable sensing unit of a miniature electrochemical detection device in the prior art is not easy to seal by using a plug-in interface, so that the detection accuracy is reduced and the service life of the device is prolonged, and provides the miniature electrochemical detection device.
The utility model solves the technical problems through the following technical scheme:
the utility model provides a miniature electrochemical detection device, which comprises a device cover, a sensing unit and a device main body, wherein the sensing unit is arranged on the device cover;
the top end of the device main body is provided with a signal spring needle;
the sensing unit is used for being placed on the top end of the device main body and abutting against the signal elastic needle;
the device cover is detachably connected with the device main body;
when the device cover is connected with the device main body, the sensing unit and the signal elastic needle are accommodated in a cavity of the device cover, and the sensing unit is elastically abutted against the signal elastic needle;
an opening is arranged at the top end of the device cover.
Preferably, a sealing ring is included between the device cover and the sensing unit, the sealing ring being disposed around the contour of the sensing unit.
Preferably, the front surface of the sensing unit is provided with a plurality of sensors; the sensors are in direct contact with the outside through the openings;
the back of the sensing unit is provided with a plurality of signal interfaces, and one or more of the signal interfaces correspond to one or more of the sensors;
the signal interface is elastically abutted with the corresponding signal elastic needle.
Preferably, the number of sensors includes one or more of a temperature sensor, a redox electrode, and a solid-state ion-selective electrode.
Preferably, the top end of the device main body is further provided with a first elastic needle and a second elastic needle;
the back of the sensing unit is also provided with a storage chip interface and an in-place interface;
when the device cover is connected with the device main body, the first elastic needle is elastically abutted to the storage chip interface, and the second elastic needle is elastically abutted to the in-place interface.
Preferably, the top end of the device main body is further provided with a power supply spring pin, and the power supply spring pin is used for connecting a charging device.
Preferably, the micro electrochemical detection device further comprises a cavity.
Preferably, the miniature electrochemical detection device further comprises a motion sensor and a processor;
the motion sensor is used for acquiring the current position information of the miniature electrochemical detection device;
the sensing unit is used for acquiring electrochemical detection information;
the processor is configured to acquire and store the current location information and the electrochemical detection information;
the processor is further configured to generate an electrochemical detection result based on the electrochemical detection information.
Preferably, the miniature electrochemical detection device further comprises a wireless communication module, the wireless communication module is connected with the processor, and the wireless communication module is used for transmitting the current position information, the electrochemical detection information and the electrochemical detection result received from the processor to an external terminal device.
Preferably, the wireless communication module comprises any one or more of a bluetooth module, a Wi-Fi module, a 2G communication module, a 3G communication module, a 4G communication module and a 5G communication module.
The positive progress effects of the utility model are as follows: according to the miniature electrochemical detection device provided by the utility model, the sensing unit is arranged on the front side and the back side, the sensor is arranged on the front side for sensing, and the sensing unit is fixed between the device cover and the device main body by applying acting force through the elastic needle on the back side, so that the sealing property of the device is enhanced, the sensing unit is convenient to replace, the application scene of the electrochemical detection device is expanded, the detection accuracy is improved, and the service life of the device is prolonged.
Drawings
Fig. 1 is a first overall schematic view of a micro electrochemical detection device according to an exemplary embodiment of the present invention.
FIG. 2 is a second overall schematic view of a micro electrochemical detection device according to an exemplary embodiment of the present invention.
Fig. 3 is an exploded view of a micro electrochemical detection device according to an exemplary embodiment of the present invention.
Fig. 4 is a schematic front view of a sensing unit of a micro electrochemical detection device according to an exemplary embodiment of the present invention.
FIG. 5 is a schematic reverse view of a sensing unit of a micro electrochemical detection device according to an exemplary embodiment of the present invention.
FIG. 6 is a schematic diagram of a control circuit of the device body of the micro electrochemical detection device according to an exemplary embodiment of the present invention.
FIG. 7 is a schematic diagram of a power supply pogo pin of a micro electrochemical detection device according to an exemplary embodiment of the utility model.
Detailed Description
The present invention will be more clearly and completely described below in connection with exemplary embodiments thereof and with reference to the accompanying drawings.
The present exemplary embodiment discloses a micro electrochemical detection device, which has an overall capsule shape. As shown in fig. 1 and 2, the device has a diameter of 30mm and a length of 52mm, and can realize multichannel online measurement and analysis of pH, dissolved oxygen, temperature and inorganic salt concentration in a bioreactor, a water body and other scenes.
Specifically, as shown in fig. 3, the micro electrochemical detection device in the present embodiment includes a device cover 1, a sensing unit 2, and a device body 3;
the top end of the device main body 3 is provided with a signal spring needle 31;
the sensing unit 2 is used for being placed on the top end of the device main body 3 and abutting against the signal elastic needle 31;
the device cover 1 is detachably connected with the device body 3;
when the device cover 1 is connected with the device body 3, the sensing unit 2 and the signal elastic needle 31 are accommodated in a cavity of the device cover, and the sensing unit 2 is elastically abutted against the signal elastic needle 31;
the top end of the device cover 1 is provided with an opening.
The sensing unit 2 and the device body 3 of the micro electrochemical detection device are taken as two independent parts which are detachably connected. In other words, in order to realize more types of electrochemical detection, the sensing unit 2 may be integrally replaced as a single component to allow different types of sensors to be installed into the micro electrochemical detection apparatus according to actual needs. Accordingly, the device body 3 can be replaced at any time after being disassembled as a component, thereby improving the overall utilization rate and the service life of the micro electrochemical detection device.
The conventional electrochemical detection device generally uses a plug-in connection between a sensing unit and a device body, and a connection port is arranged at one end of a sensor, so that the problem that the sealing is difficult to perform exists. In addition, since the volume of the micro electrochemical detection device is small, the modules are prone to poor contact and interface damage caused by installation dimension errors, misalignment of the interfaces during operation and the like when the modules are plugged and unplugged at the interfaces.
Based on the need for replacing the sensor unit 2, the signal pogo pin 31 is used in the present embodiment to apply a force to the sensor unit 2 to abut the sensor unit 2 to a corresponding position of the device cover 1, thereby closing a gap between the sensor unit 2 and the device body 3, the device cover 1 due to the connection, instead of the plug-in interface.
Specifically, the outer edge of the sensing unit 2 is provided with a limiting groove corresponding to the top end of the device body 3, and in practical implementation, the sensing unit 2 is connected to the device body 3 only according to the position of the limiting groove, and the signal pogo pin 31 is automatically abutted to the corresponding position of the sensing unit 2. The abutting mode not only effectively reduces the abrasion of the interface part in the plugging and unplugging process and avoids the problems possibly generated in the plugging and unplugging process, but also effectively prevents gas, liquid and the like in the environment from corroding each part of the device after entering the device, and therefore reduces the possible influence on the detection data.
As a preferred embodiment, the device cover 1 comprises a sealing ring 4 between the sensor unit 2, which sealing ring 4 is arranged around the contour of the sensor unit 2. The sealing ring 4 may form a seal at the interface of the sensing unit 2 and the device body 3, further improving the sealing at the device interface. In addition, the connection part between the device body 3 and the device cover 1 is sealed again by adopting a double-layer O-shaped rubber sealing ring 32, so that the protective performance is further improved, and the service life of the device is prolonged.
In addition to applying force, the signal pogo pin 31 at the top end of the device body 3 serves as a connector of the sensing unit 2 to the device body 3 in this embodiment. After abutting against the sensing unit 2, the signal pogo pin 31 can realize connection between the sensing unit 2 and the device body 3, so that reading and transmission of sensor sensing data, electrochemical analysis data, sensing unit chip preset data and the like can be performed between the two.
Because the miniature electrochemical detection device in the embodiment can be directly placed in the bioreactor for use, in order to meet the requirements of sealing and high-temperature sterilization before the use of the bioreactor, the shell of the miniature electrochemical detection device is made of high-temperature resistant materials.
In specific implementation, the whole micro electrochemical detection device is directly placed in an environment to be detected, and the sensing unit 2 directly contacts the environment to be detected through an opening at the top end of the device 1 for sensing.
As a specific embodiment, as shown in fig. 4 and 5, the front surface of the sensing unit 2 is provided with a plurality of sensors; the sensors are in direct contact with the outside through the openings;
the back of the sensing unit 2 is provided with a plurality of signal interfaces 22, one or more of the signal interfaces 22 correspond to one or more of a plurality of sensors;
the signal interface 22 elastically abuts against the corresponding signal pogo pin 31.
In the present embodiment, the sensing unit 2 is provided with a front surface and a back surface, wherein the front surface is provided with a plurality of sensors, and the back surface is provided with signal interfaces 22 corresponding to the sensors.
After the device cover 1 is mounted to the device body 3, the area where the sensor is located directly contacts the environment to be measured through the opening of the device cover 1, and the back surface of the sensing unit 2 and the connection portion of the sensing unit 2 and the device body 3 are sealed from the external environment. Therefore, the contact area of other areas except the sensor area and the external environment can be reduced to the maximum extent, and the device is effectively prevented from being corroded.
The sensing unit 2 in the present embodiment includes, but is not limited to, an electrochemical array sensing chip. In order to enable multi-channel data acquisition of several sensors thereon, one or more of the signal interfaces 22 at the back of the sensing unit 2 correspond to one or more of several sensors at the front of the sensing unit 2 for selective transmission of different sensor sensing data.
In another particular embodiment, the number of sensors includes one or more of a temperature sensor 211, a redox electrode 212, and a solid-state ion-selective electrode 213. The temperature sensor 211 is used for measuring the temperature in the environment to be measured; the redox electrode is used for measuring dissolved oxygen; solid-state ion-selective electrodes for measuring pH and ion concentration, e.g. Ca2+、K+、Na+、Mg2+、NH4 +And the like.
The solid ion selective electrode adopts high-density polymer as an ion selective layer matrix, so that the solid ion selective electrode has higher thermal stability, and the application requirement of high-temperature sterilization is met. The concentration of each ion in a system to be detected is dynamically detected by integrating a plurality of solid ion selective electrodes, and background interference and mutual interference among ions to be detected are eliminated by a data processing module.
It is to be understood that three types of sensors are listed herein, but it is not intended that the types of sensors that may be included be limited thereto. The specific sensor type can be set arbitrarily according to application scenarios and actual requirements, for example, a corresponding sensor for performing electrochemical detection on glucose, lactic acid, and the like can be added.
As a preferred embodiment, the top end of the device main body 3 is further provided with a first elastic needle and a second elastic needle;
the back of the sensing unit 2 is also provided with a memory chip interface 221 and an in-place interface 222;
when the device cover 1 is connected to the device body 3, the first pogo pin elastically abuts against the memory chip interface 221, and the second pogo pin elastically abuts against the site interface 222.
In this embodiment, not only the data transmission using the signal pogo pin 31 but also the realization of different types of functions using a plurality of pogo pins are included. For example, as shown in fig. 6, the device body 3 includes a control circuit, and the control circuit is provided with a multiplexer, a battery interface, a power management chip, an analog front end, a control chip, and a bluetooth module. Different modules of the control circuit are connected to different pogo pins for function control.
Specifically, the first pogo pin abuts against the memory chip interface 221, so that the control chip on the circuit in the device body reads the pre-stored data in the memory chip, or stores the new data into the memory chip; the second elastic pin abuts against the on-site interface 222, so that the corresponding module of the control circuit determines whether the sensing unit 2 is successfully connected to the device body 3. These pogo pins likewise make resilient contact with the sensor unit 2 to improve the tightness at the interface.
As another preferred embodiment, as shown in fig. 7, the top end of the device body 3 is further provided with a power supply latch 33, and the power supply latch 33 is used for connecting an external charging device. In the present embodiment, the device body 3 has a charging set, and the power supply pogo pin 33 can charge the device body 3 when connected to a charging device; the power supply latch 33 also serves as a biasing structure for abutting against the sensing unit 2 when not connected to an external charging device.
It should be understood that the micro electrochemical detection device in the present embodiment may further include more pogo pins to achieve more functions, for example, enabling the control chip to activate the sensor for sensing, etc.
In a preferred embodiment, the micro electrochemical detection device further includes a cavity. The environment to be detected for electrochemical detection is usually various liquid environments, and the density of various liquids is different, so that the position of the device in the liquid is difficult to control. The micro electrochemical detection device provided by the embodiment can enable the device to float upwards or sink through injecting gas/liquid into the cavity or extracting the gas/liquid from the cavity according to an actual application scene, and can better perform electrochemical detection on different positions of liquid to be detected so as to provide a more accurate electrochemical detection result.
In order to better control the position of the micro electrochemical detection device in the environment to be detected, in a preferred mode, the micro electrochemical detection device further comprises a motion sensor and a processor;
the motion sensor is used for acquiring the current position information of the miniature electrochemical detection device;
the sensing unit is used for acquiring electrochemical detection information;
the processor is configured to acquire and store current position information and electrochemical detection information;
the processor is further configured to generate an electrochemical detection result based on the electrochemical detection information.
In this embodiment, a motion sensor is further disposed in the micro electrochemical detection device to measure a specific position of the device in an environment to be measured. The micro electrochemical detection device also directly carries out data acquisition and online data processing in an environment to be detected through the processor.
In another preferred embodiment, the micro electrochemical detection device further includes a wireless communication module, the wireless communication module is connected to the processor, and the wireless communication module is configured to transmit the current position information, the electrochemical detection information, and the electrochemical detection result received from the processor to an external terminal device. The wireless communication module preferably comprises any one or more of a Bluetooth module, a Wi-Fi module, a 2G communication module, a 3G communication module, a 4G communication module and a 5G communication module.
In this embodiment, the micro electrochemical detection device may send the collected data to an external device in real time through the wireless communication module, or perform online analysis of a target system in the device through the processor, and then send the analysis result to the external device through the wireless communication module, so as to realize remote real-time monitoring of the electrochemical detection device.
The miniature electrochemical detection device in this embodiment uses the signal bullet needle to carry out elasticity butt and replace the plug-in type interface between sensing unit and device main part, has realized the replaceable miniature device's of sensing unit interface leakproofness better, has reduced the area of contact of sensor and the material that awaits measuring, has improved electrochemical detection device's detection accuracy and life.
It should be noted that the foregoing embodiments are only used for illustrating the technical solutions of the present invention, and are not limited thereto; although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that changes may be made in the embodiments described above, or equivalents may be substituted for some or all of the features thereof without departing from the scope of the present invention.
Claims (10)
1. A miniature electrochemical detection device is characterized by comprising a device cover, a sensing unit and a device main body;
the top end of the device main body is provided with a signal spring needle;
the sensing unit is used for being placed on the top end of the device main body and abutting against the signal elastic needle;
the device cover is detachably connected with the device main body;
when the device cover is connected with the device main body, the sensing unit and the signal elastic needle are accommodated in a cavity of the device cover, and the sensing unit is elastically abutted against the signal elastic needle;
an opening is arranged at the top end of the device cover.
2. The miniature electrochemical sensing device of claim 1, comprising a sealing ring between said device cover and said sensing unit, said sealing ring being disposed around a contour of said sensing unit.
3. The micro electrochemical detection device according to claim 1, wherein the front surface of the sensing unit is provided with a plurality of sensors; the sensors are in direct contact with the outside through the openings;
the back of the sensing unit is provided with a plurality of signal interfaces, and one or more of the signal interfaces correspond to one or more of the sensors;
the signal interface is elastically abutted with the corresponding signal elastic needle.
4. The miniaturized electrochemical detection device of claim 3, wherein the plurality of sensors comprises one or more of a temperature sensor, a redox electrode, and a solid-state ion-selective electrode.
5. The miniature electrochemical test device according to claim 3, wherein the top end of said device body is further provided with a first pogo pin and a second pogo pin;
the back of the sensing unit is also provided with a storage chip interface and an in-place interface;
when the device cover is connected with the device main body, the first elastic needle is elastically abutted to the storage chip interface, and the second elastic needle is elastically abutted to the in-place interface.
6. The miniature electrochemical detection device of claim 1, wherein the device body further comprises a power supply pogo pin at the top end thereof, the power supply pogo pin being used for connecting a charging device.
7. The miniaturized electrochemical detection device of claim 1 further comprising a cavity.
8. The miniaturized electrochemical detection device of claim 1 further comprising a motion sensor and a processor;
the motion sensor is used for acquiring the current position information of the miniature electrochemical detection device;
the sensing unit is used for acquiring electrochemical detection information;
the processor is configured to acquire and store the current location information and the electrochemical detection information;
the processor is further configured to generate an electrochemical detection result based on the electrochemical detection information.
9. The miniaturized electrochemical detection device of claim 8 further comprising a wireless communication module coupled to the processor, the wireless communication module configured to transmit the current location information, the electrochemical detection information, and the electrochemical detection results received from the processor to an external terminal device.
10. The miniature electrochemical detection device of claim 9, wherein said wireless communication module comprises any one or more of a bluetooth module, a Wi-Fi module, a 2G communication module, a 3G communication module, a 4G communication module, and a 5G communication module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122347874.2U CN216484752U (en) | 2021-09-27 | 2021-09-27 | Miniature electrochemical detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122347874.2U CN216484752U (en) | 2021-09-27 | 2021-09-27 | Miniature electrochemical detection device |
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| Publication Number | Publication Date |
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| CN216484752U true CN216484752U (en) | 2022-05-10 |
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| CN202122347874.2U Active CN216484752U (en) | 2021-09-27 | 2021-09-27 | Miniature electrochemical detection device |
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- 2021-09-27 CN CN202122347874.2U patent/CN216484752U/en active Active
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