CN210775318U - Flexible three-electrode sodium ion detection device - Google Patents
Flexible three-electrode sodium ion detection device Download PDFInfo
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- CN210775318U CN210775318U CN201921571791.8U CN201921571791U CN210775318U CN 210775318 U CN210775318 U CN 210775318U CN 201921571791 U CN201921571791 U CN 201921571791U CN 210775318 U CN210775318 U CN 210775318U
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Abstract
The utility model discloses a flexible three-electrode sodium ion detection device, the device include flexible three-electrode sodium ion detection sensor, signal processing module, data display module and power module. Equivalent resistance linearly related to the concentration of sodium ions is formed in the flexible three-electrode sodium ion detection sensor, and detection signals corresponding to different sodium ion concentrations can be output; the signal processing module consists of a Venturi oscillation conversion circuit and a waveform shaping circuit, and can convert a detection signal into a sine wave and then convert the sine wave into a square wave signal; the data display module is composed of a single chip microcomputer and a mobile terminal, the single chip microcomputer is provided with a nixie tube display circuit and a Bluetooth data sending circuit, the frequency of the square wave signal can be converted into corresponding sodium ion concentration, and the sodium ion concentration is displayed on the nixie tube and the mobile terminal. The utility model discloses prepare the electrode on flexible substrate (preferably but not limited to the poly terephthalic acid plastics PET), low in manufacturing cost, light in weight, sensitivity are high.
Description
Technical Field
The utility model relates to an electronic equipment for sodium ion content testing, especially a flexible three-electrode sodium ion detection device.
Background
The intake of sodium ions has important significance for maintaining normal physiological functions of human bodies, but the intake of sodium ions is not excessive, the world health organization recommends that the daily intake of sodium ions of human bodies is not more than 1700 mg, and the intake of excessive sodium ions can have adverse effects on the aspects of human body metabolism and the like. Therefore, it is necessary to monitor the intake of sodium ions. The flexible sodium ion detection system is convenient for monitor the sodium ion content of human body intake every day to carry out real-time data display on mobile terminal (cell-phone) through bluetooth module, avoid appearing the too much or not enough condition of intake of sodium ion, help people's more healthy life.
The patent application No. CN 201410606969.3 discloses a sodium ion sensor and a manufacturing method thereof, wherein the sodium ion sensor identifies sodium ions by a circuit composed of a substrate, a first sodium ion selective electrode, a second sodium ion selective electrode and a salt bridge. The invention discloses an all-solid-state potassium ion sensor with application number of CN 201010193003.3 and a preparation method thereof, wherein a substrate, a potassium ion selective electrode and an external reference electrode are used for detecting potassium ions. In the existing technical scheme about ion detection, metal ion detection is mainly realized by preparing an ion selective electrode, the types of detection sensors for sodium ions are few, and the concentration of the sodium ions cannot be quantitatively determined. In addition, the existing sodium ion detection device has a complex structure, cannot simultaneously display the concentration of sodium ions in a detected solution, and is not visual in data display. More importantly, a flexible sodium ion detection device is not available in the market at present.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flexible three-electrode sodium ion detection device can real-time detection sodium ion content and accomplish the demonstration of testing data. The flexible three-electrode sodium ion detection sensor in the device forms an equivalent resistor with the resistance value changing along with the change of the concentration of sodium ions to be detected, and transmits a detection signal to the signal processing module; the signal processing module converts the input signal into a square wave signal and transmits the square wave signal to the data display module; the data display module converts the square wave signal into a concentration value of the sodium ion solution to be detected, and displays the concentration value on the nixie tube and the mobile terminal to complete data analysis and display; the power supply module supplies power for the flexible three-electrode sodium ion sensor, the signal processing module and the data display module.
Realize the utility model discloses the concrete technical scheme of purpose is:
a flexible three-electrode sodium ion detection device is characterized in that: the device comprises a flexible three-electrode sodium ion detection sensor, a signal processing module, a data display module and a power supply module, wherein the flexible three-electrode sodium ion detection sensor, the signal processing module and the data display module are sequentially connected, and the power supply module is respectively connected with the flexible three-electrode sodium ion detection sensor, the signal processing module and the data display module; wherein:
the three-electrode sodium ion detection sensor takes a flexible material as a substrate, the thickness of the substrate is 40-60 microns, and a three-electrode sodium ion detection circuit is arranged on the substrate;
the signal processing module comprises a Venturi oscillation circuit and a waveform shaping circuit, and the Venturi oscillation circuit is connected with the waveform shaping circuit;
the data display module consists of a single chip microcomputer and a mobile terminal, and the single chip microcomputer is provided with a nixie tube display circuit and a Bluetooth data transmitting circuit; a digital-to-analog conversion module is arranged in the singlechip.
The three-electrode sodium ion detection circuit consists of a lead, a left electrode, a right electrode and a middle electrode, and the connection mode is as follows: the three electrodes, namely a left electrode, a middle electrode and a right electrode, are sequentially arranged on a flexible substrate at intervals in parallel, the middle electrode, the left electrode and the right electrode respectively form two current loops through sodium ion solution to form two equivalent resistors, the resistance value of the equivalent resistors changes along with the concentration of sodium ions, so that a three-electrode sodium ion detection circuit generates detection signals corresponding to different sodium ion concentrations, one end of the middle electrode is connected with a power supply module through a lead, one ends of the left electrode and the right electrode are connected with each other, and the other ends of the middle electrode and the left electrode and the right electrode are connected with the input end of a Venturi oscillation circuit in a.
The Venturi oscillation circuit converts a detection signal input by the three-electrode sodium ion detection sensor into a sine wave signal, and then transmits the sine wave signal to the input end of the waveform shaping circuit.
The waveform shaping circuit converts sine wave signals output by the Venturi oscillation circuit into square wave signals, and the output end of the waveform shaping circuit is connected with a signal input serial port of a single chip microcomputer in the data display module, so that the single chip microcomputer can complete data analysis and display by utilizing the square wave signals.
The flexible material is PET, PDMS, PI or PEN (preferably but not limited to PET).
The utility model has the advantages that:
the utility model discloses its simple structure only utilizes the linear relation between sodium ion concentration and the circuit equivalent resistance to prepare flexible three-electrode sodium ion detection sensor, principle and simple manufacture, and its flexible substrate flexible, quality are light, can laminate human oral cavity skin or tooth surface, conveniently carry, and the user can be more convenient carry on the detection of sodium ion content in the food, the utility model discloses the real-time data display on mobile terminal still can be accomplished through the bluetooth module that carries on.
Drawings
FIG. 1 is a block diagram of the present invention;
fig. 2 is a schematic structural view of the flexible three-electrode sodium ion detection sensor of the present invention;
FIG. 3 is a graph showing the relationship between the equivalent parallel resistance and the sodium ion concentration formed by the three-electrode sodium ion detection circuit.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
Examples
Referring to fig. 1, the utility model discloses a flexible three electrode sodium ion detection sensor 1, signal processing module 2, data display module 3 and power module 4, flexible three electrode sodium ion detection sensor 1, signal processing module 2, data display module 3 link to each other in proper order, and power module 4 connects flexible three electrode sodium ion detection sensor 1, signal processing module 2 and data display module 3 respectively. The signal processing module 2 comprises a Venturi oscillation circuit 5 and a waveform shaping circuit 6; the data display module 3 comprises a singlechip 7 and a mobile terminal 8, and a nixie tube display circuit 9 and a Bluetooth data transmitting circuit 10 are carried on the singlechip 7; a digital-to-analog conversion module is arranged in the singlechip.
Referring to fig. 2, the flexible three-electrode sodium ion detection sensor of the present invention is composed of a flexible substrate 11 (preferably, but not limited to, PET), a left electrode 12 (preferably, but not limited to, a silver electrode), a right electrode 13 (preferably, but not limited to, a silver electrode), a middle electrode 14 (preferably, but not limited to, a silver electrode), a lead 15, a lead 16, a lead 17, and a lead 18. The flexible substrate 11 is arranged at the bottommost layer, the left electrode 12, the middle electrode 14 and the right electrode 13 are sequentially arranged on the flexible substrate in parallel at intervals, and the left electrode and the right electrode are connected through a lead 15. The other end of the middle electrode 14 is connected with a power supply module through a lead 16; the other ends of the left electrode 12 and the right electrode 13 are respectively connected with the signal processing module through a lead 17 and a lead 18 to complete the acquisition of initial data.
The utility model discloses the working process does:
the flexible three-electrode sodium ion detection sensor is immersed in a sodium ion solution to be detected, so that the middle electrode is communicated with the left electrode and the right electrode through the sodium ion solution to form an equivalent resistance, and the equivalent resistance value can be changed along with the concentration of the sodium ion solution to be detected, so that a detection signal is changed; the detection signal is input into a Venturi oscillation circuit in the signal processing module through a lead between the left electrode and the right electrode and the signal processing module, processed into a sine wave signal and transmitted to a waveform shaping circuit; the waveform shaping circuit converts an input sine wave signal into a square wave signal and transmits the square wave signal into a single chip microcomputer in the data display module through a data receiving serial port; the singlechip is internally provided with a digital-to-analog conversion module for converting square wave signals into sodium ion concentration values, the sodium ion concentration values in the sodium ion solution to be detected are obtained through the digital-to-analog conversion module, the sodium ion concentration can be displayed on a nixie tube display circuit carried by the singlechip, and sodium ion concentration data can be wirelessly transmitted to the mobile terminal through a Bluetooth data transmitting circuit carried by the singlechip, so that the detection and data display of the sodium ion solution to be detected are completed.
Referring to fig. 3, the middle electrode of the flexible three-electrode sodium ion detection sensor, the left electrode and the right electrode are communicated through sodium ion solution and form two equivalent resistances with the change of the sodium ion concentration, and an obvious linear relation exists between the equivalent parallel resistance Rw of the two equivalent resistances and the sodium ion concentration. Four tests were performed on the equivalent parallel resistance Rw when the sodium ion concentration was 6%, 12%, 18%, and are respectively labeled as control 1-control 4, and a graph was plotted with the resistance value of the equivalent parallel resistance Rw as the vertical axis and the sodium ion concentration S% as the horizontal axis according to the measured data. As can be seen from fig. 3, when the concentration of sodium ions in the solution increases, the parallel equivalent resistance Rw decreases, the parallel equivalent resistance has a good linear relationship with the concentration of sodium ions, and the equivalent parallel resistance Rw and the linear relationship can be used to obtain the corresponding concentration of sodium ions in the solution to be measured.
Claims (4)
1. A flexible three-electrode sodium ion detection device is characterized by comprising a flexible three-electrode sodium ion detection sensor, a signal processing module, a data display module and a power supply module, wherein the flexible three-electrode sodium ion detection sensor, the signal processing module and the data display module are sequentially connected, and the power supply module is respectively connected with the flexible three-electrode sodium ion detection sensor, the signal processing module and the data display module; wherein:
the three-electrode sodium ion detection sensor takes a flexible material as a substrate, and a three-electrode sodium ion detection circuit is arranged on the substrate; wherein the thickness of the substrate is 40-60 microns;
the signal processing module comprises a Venturi oscillation circuit and a waveform shaping circuit, and the Venturi oscillation circuit is connected with the waveform shaping circuit;
the data display module consists of a single chip microcomputer and a mobile terminal, and the single chip microcomputer is provided with a nixie tube display circuit and a Bluetooth data transmitting circuit; a digital-to-analog conversion module is arranged in the singlechip.
2. The flexible three-electrode sodium ion detection device according to claim 1, wherein the three-electrode sodium ion detection circuit is composed of a lead, a left electrode, a right electrode and a middle electrode, the left electrode and the right electrode respectively form two current loops through sodium ion solution to form two equivalent resistors, one end of the middle electrode is connected with the power supply module through the lead, one ends of the left electrode and the right electrode are connected with each other, and the other end of the middle electrode is connected with an input end of a Venturi oscillation circuit in the signal processing module.
3. The flexible three-electrode sodium ion detection device according to claim 1, wherein an output end of the Venturi oscillation circuit is connected with an input end of the waveform shaping circuit.
4. The flexible three-electrode sodium ion detection device according to claim 1, wherein an output end of the waveform shaping circuit is connected with a signal input serial port of a single chip microcomputer in the data display module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921571791.8U CN210775318U (en) | 2019-09-20 | 2019-09-20 | Flexible three-electrode sodium ion detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921571791.8U CN210775318U (en) | 2019-09-20 | 2019-09-20 | Flexible three-electrode sodium ion detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596221A (en) * | 2019-09-20 | 2019-12-20 | 华东师范大学 | Flexible three-electrode sodium ion detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596221A (en) * | 2019-09-20 | 2019-12-20 | 华东师范大学 | Flexible three-electrode sodium ion detection device |
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