CN115372427A - Dual-mode wireless connection portable detection device - Google Patents
Dual-mode wireless connection portable detection device Download PDFInfo
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- CN115372427A CN115372427A CN202210816907.XA CN202210816907A CN115372427A CN 115372427 A CN115372427 A CN 115372427A CN 202210816907 A CN202210816907 A CN 202210816907A CN 115372427 A CN115372427 A CN 115372427A
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- module
- potentiostat
- central processing
- processing unit
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a portable detection device with dual-mode wireless connection, which comprises: central processing unit, man-machine interaction module, wireless communication module, the potentiostat module, power management module, global positioning navigation, bluetooth and narrowband thing networking function have rationally been made up, possess abundant wireless connection mode, the change over switch of multichannel has been designed, to the potentiostat timesharing multiplexing, the analytical technique of application cyclic voltammetry and differential pulse voltammetry, realized under the short distance with the cell-phone, the data interaction of computer and the high in the clouds data upload function under the wide range, the integrality and the independence of electrochemistry measurement have been ensured, a long continuation of the journey is provided, small size, low cost, the portable electrochemistry analysis platform of high accuracy.
Description
Technical Field
The invention relates to the field of electrochemical detection equipment, in particular to portable detection equipment with a dual-mode wireless connection.
Background
With the rapid development of nano materials, sensor preparation processes and electronic technologies, sensors and detection equipment based on electrochemical analysis are gradually miniaturized, and the realization of an instant detection scene is greatly promoted in the fields of medical health, environmental monitoring, food analysis and the like. At the field testing end, portable and small volume electrochemical analytical devices are becoming an important platform.
At present, in order to meet the demands for field testing in different fields, portable testing devices based on electrochemical analysis techniques are being developed in large quantities. Michael DM Dryden et al designed an open source potentiostat specifically designed for laboratories, designed with analytical techniques such as cyclic voltammetry, square wave voltammetry, and specifically provided with picoampere current measurement capability, and operated by connecting to a dedicated software running on a notebook via a USB. An open-source general radio chemical detector is described in the work of Alar Ainla et al, which can be powered by a rechargeable battery, is connected with a smart phone through low-power Bluetooth, can control equipment and visualize measurement results at the smart phone end, and completes the function of sending data to the cloud end by means of the smart phone.
The data interaction modes used by the two electrochemical analysis platforms are relatively limited, the universal serial bus and the Bluetooth mode can only realize short-distance connection with the data presentation platform, and the equipment has no independent data interaction capability in a wider range. Meanwhile, the equipment can operate and remotely access data only by the participation of a smart phone or a computer, so that unnecessary troubles are brought to field detection with certain independence. In the design, the control of electrode waveforms is realized in an interactive mode of a microcontroller and an external digital/analog conversion chip, the manufacturing cost is increased, the space required by device placement is increased, most portable electrochemical equipment only has one electrode interface, and when a large amount of target objects are analyzed, the electrodes need to be frequently replaced or the requirement for analyzing the target objects by using a plurality of electrode arrays cannot be met.
Disclosure of Invention
The invention discloses a dual-mode wireless connection portable detection device aiming at the problems in the prior art, and solves the defects that the existing electrochemical detection platform cannot be independently used as a sensing node of a wireless detection network, cannot carry out field analysis and cannot drive an electrode array by applying analysis technologies of cyclic voltammetry and differential pulse voltammetry.
The technical scheme adopted for realizing the invention is as follows: a dual mode, wirelessly connected, portable sensing device, comprising: the device comprises a central processing unit 1, a man-machine interaction module 2, a wireless communication module 3, a potentiostat module 4, a power management module 5 and a global positioning navigation system 6, wherein an analog-digital converter 11 and a digital-analog converter 12 are arranged in the central processing unit 1, the analog-digital converter 11 is electrically connected with the potentiostat module 4, the digital-analog converter 12 is electrically connected with the potentiostat module 4, the man-machine interaction module 2 is connected with the central processing unit 1 through an input signal, and the wireless communication module 3 comprises: the low-power-consumption Bluetooth module 31 and the narrow-band Internet of things module 32, the central processing unit 1 is connected with the low-power-consumption Bluetooth module 31 through signals, the narrow-band Internet of things module 32 is connected with the central processing unit 1 through signals, the power management module 5 is electrically connected with the central processing unit 1, the man-machine interaction module 2, the wireless communication module 3, the potentiostat module 4 and the global positioning navigation system 6 respectively, and the central processing unit 1 is connected with the global positioning navigation system 6 through signals.
Further, a key input module 21, a display panel 22 and an indicator lamp 23 are arranged in the human-computer interaction module 2, the key input module 21 is electrically connected with the display panel 22, and the indicator lamp 23 is electrically connected with the display panel 22.
Further, the potentiostat module 4 comprises: the device comprises an active filter unit 41, a three-electrode potentiostat 42 and a multi-channel selector 43, wherein an analog/digital converter 11 of the central processing unit 1 is electrically connected with the three-electrode potentiostat 42, the three-electrode potentiostat 42 converts a current signal into a voltage signal through a transimpedance amplifier, the active filter unit 41 is electrically connected with the three-electrode potentiostat 42, the active filter unit 41 generates different excitation potentials, and the three-electrode potentiostat 42 is electrically connected with the multi-channel selector 43.
Further, the multi-channel selector 43 is electrically connected to the four screen-printed electrode insertion grooves by using four channels, respectively.
Further, the power management module 5 includes: the lithium battery 51 is electrically connected with the central processing unit 1, and the voltage reference 52 is electrically connected with the analog/digital converter 11 and the digital/analog converter 12 respectively.
The beneficial effects of the portable detection equipment with dual-mode wireless connection provided by the invention are as follows:
1. a portable detection device with dual-mode wireless connection reasonably combines functions of Bluetooth and a narrow-band Internet of things, has rich wireless connection modes, realizes data interaction with a mobile phone and a computer at a short distance and a cloud data uploading function at a wide range, and plays a role in field detection scene as an independent device;
2. a portable detection device with double modes and wireless connection is provided with a multi-channel selector switch, realizes time division multiplexing of a constant potential meter, provides convenience for detection of a large number of sensors and an array sensor, and provides a portable electrochemical analysis platform with long endurance, small volume, low cost and high precision;
3. a dual-mode wireless connection portable detection device is a software framework which is strong in expansibility and complete in packaging structure, provides convenience in software design for development of similar functions, simultaneously has a good man-machine interaction interface, and ensures the integrity and independence of electrochemical measurement of user operation equipment.
Drawings
FIG. 1 is a block diagram of the structural design of a dual mode wirelessly connected portable sensing device;
FIG. 2 is a three-dimensional schematic diagram of a dual mode wirelessly connected portable sensing device;
in the figure: 1. the system comprises a Central Processing Unit (CPU), 11 an analog-to-digital converter, 12 a digital-to-analog converter, 2 a human-computer interaction module, 21 a key input module, 22 a display panel, 23 an indicator light, 3 a wireless communication module, 31 a low-power consumption Bluetooth module, 32 a narrow-band Internet of things module, 4 a potentiostat module, 41 a source filter unit, 42 a three-electrode potentiostat, 43 a multi-channel selector, 5 a power management module, 51 a lithium battery, 52 a voltage reference, 6 a global positioning navigation system and 7 an equipment shell.
Detailed Description
The present invention will be described in further detail with reference to the accompanying fig. 1-2 and the specific embodiments described herein, which are provided for illustration only and are not intended to limit the invention.
As shown in fig. 1, the portable dual-mode wirelessly connected detection device includes a human-computer interaction module 2, a wireless communication module 3, a potentiostat module 4, a power management module 5, a global positioning navigation system 6 and a central processing unit 1, wherein the human-computer interaction module 2 is connected with the central processing unit 1 and is used for outputting user input parameters and prompt information, the central processing unit 1 processes input signals to transmit response instructions, the central processing unit 1 controls an analog-to-digital converter 12 to output specified potentials to drive the potentiostat module 4, data collected by the potentiostat module 4 is read by the central processing unit 1 through an analog-to-digital conversion module 11, the data is transmitted through the wireless communication module 3, data of the global positioning navigation system 6 is also processed by the central processing unit 1, and the power management module 5 manages charging and discharging of a battery and a power supply of the whole hardware system.
The human-computer interaction interface 2 comprises: the input device comprises keys, and a light and sound output assembly consisting of a passive buzzer, an OLED display panel and LED lamp beads, wherein an OLED display panel 22 is used as a device for graphic display at a man-machine interaction interface 2, the display panel 22 is connected with a bus interface of a central processing unit 1, an LED is arranged as an indicator lamp 23 of the running and working state of a system, a buzzer is used for sound reminding, the key input module 21 is formed by independent keys, and the on-off state of the key module is acquired through an input pin of the central processing unit 1.
The wireless communication method 3 includes: the low-power Bluetooth module 31 is connected with the central processing unit 1 through a serial interface, so that data can be transmitted through; narrowband thing networking module 32 is connected with SMB interface and patch antenna and active GPS big dipper dual-frenquency antenna, and data are mutual through asynchronous serial interface and central processing unit 1, and low-power consumption bluetooth module 31 can be closely with data transmission to personal computer and smart mobile phone, and narrowband thing networking module 32 is in the high in the clouds server with the long-range transmission of data.
The potentiostat module 4 is used for realizing an electrochemical analysis method based on a three-electrode system, and comprises a plurality of units which can form potential control and current detection, the design of a plurality of channels is realized by using a multiplexer to control and realize that different electrode channels are connected into the potentiostat module, and an active filtering unit 41 in the potentiostat module 4 is a four-order Chebyshev active low-pass filter formed by an operational amplifier. The central processing unit 1 is connected with the source filter unit 41, different excitation potentials are generated through the channel, the three-electrode potentiostat 42 keeps the potentials constant through the operational amplifier, a current signal is converted into a voltage signal through the transimpedance amplifier, and the voltage signal is connected with an analog-to-digital conversion channel of the central processing unit 1 to acquire current information; the 3 electrodes of the three-electrode potentiostat 42 are connected to a multichannel selector 43. The multi-channel selector 43 uses four channels to connect with four screen-printed electrode slots respectively, so as to realize electrochemical detection of the four sensors by the device.
The device uses a power management module 5, a polymer lithium battery management module realizes the charging protection of a lithium battery 51, a green light is turned on to indicate that the battery is charged completely, and a red light is turned on to indicate that the battery is being charged; the low dropout linear regulator provides a stable voltage reference 52 for the entire system and provides an analog portion of the reference level in the cpu 1.
As shown in fig. 2, the area of the casing 7 of the device is 10cm × 7cm, the screen-printed electrode is inserted into the electrode slot, the user can drop the solution to be monitored on the screen-printed electrode for analysis, the device is connected with a computer through bluetooth, the detection data is transmitted to the computer, and the current progress of electrochemical analysis is displayed on the display panel 22.
The module is a product sold in the market in the prior art, and the central processing unit is a model STM32F103RCT6; the low-power-consumption Bluetooth module adopts a model CH9140; the narrowband Internet of things and the global positioning navigation module adopt a model BC20.
A usage flow of a dual-mode wireless connected portable detection device is as follows:
1. connecting a screen printing electrode in the electrode slot of the invention, and then dripping a solution to be detected to the screen printing electrode;
2. the invention sets the method and parameters to be used by key operation. The information is fed back to the user through the display panel;
3. then starting a method for analysis;
4. the analyzed data is transmitted to a smart phone or a personal computer through Bluetooth for storage and visualization, and meanwhile, the data can be uploaded to a cloud server through an NB-IoT network for storage;
5. the operation is now complete.
While the foregoing is directed to the preferred form of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made therein without departing from the spirit and scope of the invention.
Claims (5)
1. A dual mode, wirelessly connected portable sensing device, comprising: central processing unit (1), man-machine interaction module (2), wireless communication module (3), potentiostat module (4), power management module (5), global positioning navigation (6), central processing unit (1) in set up analog-to-digital converter (11) and digital-to-analog converter (12), analog-to-digital converter (11) be connected with potentiostat module (4) electricity, digital-to-analog converter (12) be connected with potentiostat module (4) electricity, man-machine interaction module (2) pass through input signal connection central processing unit (1), wireless communication module (3) include: the low-power-consumption Bluetooth module (31) and the narrowband Internet of things module (32), the central processing unit (1) use the signal to connect the low-power-consumption Bluetooth module (31), the narrowband Internet of things module (32) use the signal to connect the central processing unit (1), the power management module (5) are respectively electrically connected with the central processing unit (1), the man-machine interaction module (2), the wireless communication module (3), the potentiostat module (4) and the global positioning navigation system (6), and the central processing unit (1) use the signal to connect the global positioning navigation system (6).
2. A dual mode, wirelessly connected, portable sensing device as defined in claim 1, wherein a key input module (21), a display panel (22), and an indicator light (23) are disposed within said human-computer interaction module (2), said key input module (21) being electrically connected to said display panel (22), said indicator light (23) being electrically connected to said display panel (22).
3. A dual mode wirelessly connected portable sensing device according to claim 1, wherein the potentiostat module (4) comprises: the device comprises an active filter unit (41), a three-electrode potentiostat (42) and a multi-channel selector (43), wherein an analog/digital converter (11) of the central processing unit (1) is electrically connected with the three-electrode potentiostat (42), the three-electrode potentiostat (42) converts a current signal into a voltage signal through a transimpedance amplifier, the active filter unit (41) is electrically connected with the three-electrode potentiostat (42), the active filter unit (41) generates different excitation potentials, and the three-electrode potentiostat (42) is electrically connected with the multi-channel selector (43).
4. A dual-mode wirelessly connected portable sensing device as defined in claim 3 wherein said multi-channel selector (43) is electrically connected to four screen printed electrode slots using four channels, respectively.
5. A dual mode wirelessly connected portable sensing device as defined in claim 1, wherein said power management module (5) comprises: the lithium battery (51) is electrically connected with the central processing unit (1), and the voltage reference (52) is electrically connected with the analog-digital converter (11) and the digital-analog converter (12) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210816907.XA CN115372427A (en) | 2022-07-12 | 2022-07-12 | Dual-mode wireless connection portable detection device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210816907.XA CN115372427A (en) | 2022-07-12 | 2022-07-12 | Dual-mode wireless connection portable detection device |
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| CN115372427A true CN115372427A (en) | 2022-11-22 |
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| CN202210816907.XA Pending CN115372427A (en) | 2022-07-12 | 2022-07-12 | Dual-mode wireless connection portable detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115980163A (en) * | 2023-03-17 | 2023-04-18 | 武汉理工大学 | Portable tumor DNA electrochemiluminescence detection device and method |
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2022
- 2022-07-12 CN CN202210816907.XA patent/CN115372427A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115980163A (en) * | 2023-03-17 | 2023-04-18 | 武汉理工大学 | Portable tumor DNA electrochemiluminescence detection device and method |
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