CN112014436A - Anti-virus wearable device capable of alarming - Google Patents

Anti-virus wearable device capable of alarming Download PDF

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CN112014436A
CN112014436A CN202010895438.6A CN202010895438A CN112014436A CN 112014436 A CN112014436 A CN 112014436A CN 202010895438 A CN202010895438 A CN 202010895438A CN 112014436 A CN112014436 A CN 112014436A
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signal
virus
detection
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input end
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唐文帅
唐永红
黄雄文
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Guilin Shiruide Technology Development Co ltd
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Guilin Shiruide Technology Development Co ltd
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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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • G01N27/07—Construction of measuring vessels; Electrodes therefor
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
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    • C12M1/24—Apparatus for enzymology or microbiology tube or bottle type
    • C—CHEMISTRY; METALLURGY
    • C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M1/00—Apparatus for enzymology or microbiology
    • C12M1/34—Measuring or testing with condition measuring or sensing means, e.g. colony counters
    • 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
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    • G01N27/04—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid
    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • 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
    • G01N27/02—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
    • G01N27/226—Construction of measuring vessels; Electrodes therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
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    • G08B21/24—Reminder alarms, e.g. anti-loss alarms
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B7/00—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00
    • G08B7/06—Signalling systems according to more than one of groups G08B3/00 - G08B6/00; Personal calling systems according to more than one of groups G08B3/00 - G08B6/00 using electric transmission, e.g. involving audible and visible signalling through the use of sound and light sources

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Abstract

The invention discloses an anti-virus wearable device capable of alarming, which is provided with a virus alarming device consisting of a signal generator, more than one detection bottle, a signal filter, a signal rectifier, a signal amplifier, a controller and an alarm. The detection bottle is fixed on the outer side of the anti-virus wearing equipment, namely the side which is contacted with the virus; the signal generator, the signal filter, the signal rectifier, the signal amplifier, the controller and the alarm are arranged in the closed shell; the output end of the signal generator is connected with the input end of the detection bottle; the output end of the detection bottle is connected with the input end of the signal filter, the output end of the signal filter is connected with the input end of the signal rectifier, the output end of the signal rectifier is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the controller, and the output end of the controller is connected with the input end of the alarm. The invention has the characteristics of small volume, light weight, convenient integrated disassembly and assembly and short detection period.

Description

Anti-virus wearable device capable of alarming
Technical Field
The invention relates to the technical field of wearable equipment, in particular to anti-virus wearable equipment capable of alarming.
Background
The existing anti-virus wearing equipment (such as protective clothing, a mask or goggles and the like) only isolates viruses from users from the physical layer, and achieves the purpose of protection through isolation and filtration. However, if the user wears the anti-virus wearing apparatus for a long time in a space filled with viruses, the viruses tend to adhere to the anti-virus wearing apparatus and even survive on the anti-virus wearing apparatus. When the anti-virus wearing equipment infected by virus is put on or taken off, the user can easily contact the virus carelessly, and the due efficacy of the anti-virus wearing equipment is lost. Moreover, some anti-virus wearing devices that are not infected by viruses can be reused in some non-important occasions (such as common civil occasions), and if the anti-virus wearing devices are worn once and discarded, the precious anti-virus wearing devices are wasted.
Disclosure of Invention
The invention aims to solve the problem that the existing anti-virus wearing equipment cannot remind whether a user is infected with virus or not, so that the user is in contact with the virus or the anti-virus wearing equipment is wasted when putting on or taking off the anti-virus wearing equipment, and provides the anti-virus wearing equipment capable of alarming.
In order to solve the problems, the invention is realized by the following technical scheme:
an anti-virus wearable device capable of alarming comprises an anti-virus wearable device, wherein a virus alarming device is arranged on the anti-virus wearable device; the virus alarm device comprises a signal generator, more than one detection bottle, a signal filter, a signal rectifier, a signal amplifier, a controller and an alarm; the detection bottle is fixed on the outer side of the anti-virus wearing equipment, namely the side contacting with the virus; each detection bottle consists of a bottle body, an air inlet pipe, two detection electrodes and a detection solution; the bottle body is a hollow closed cavity, and detection solution is contained in the bottle body; two detection electrodes are simultaneously soaked in the detection solution and are arranged at intervals; one detection electrode is led out of the bottle body through a signal lead-out wire and forms an input end of the detection bottle; the other detection electrode is led out of the bottle body through a signal lead-out wire and forms an output end of the detection bottle; the air inlet pipe is arranged on the bottle body in a penetrating way, one end of the air inlet pipe extends into the detection solution in the bottle body, and the other end of the air inlet pipe extends out of the bottle body; the signal generator, the signal filter, the signal rectifier, the signal amplifier, the controller and the alarm are arranged in a closed shell; the output end of the signal generator is connected with the input end of the detection bottle; the output end of the detection bottle is connected with the input end of the signal filter, the output end of the signal filter is connected with the input end of the signal rectifier, the output end of the signal rectifier is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the controller, and the output end of the controller is connected with the input end of the alarm.
In the above scheme, when the number of detection bottles is more than 2, these detection bottles adopt the distributed fixed different positions of anti-virus wearing equipment.
In the scheme, the detection electrode is a silver electrode with a silver chloride coating, and the detection solution is a potassium chloride solution.
In the above scheme, the signal generator is a periodic triangular wave signal generator or a differential square wave signal generator.
In the above scheme, the signal filter is a chebyshev I-type band-pass filter implemented by a microstrip line. The Chebyshev I-type band-pass filter comprises 5 inductors L1-L5 and 5 capacitors C1-C5; one end of the inductor L1, one end of the inductor L2 and one end of the capacitor C1 are connected to form an input end of the signal filter; the other end of the inductor L2 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with one ends of an inductor L3, an inductor L4 and a capacitor C3; the other end of the inductor L4 is connected with one end of the capacitor C4, and the other end of the capacitor C4 is connected with one ends of the inductor L5 and the capacitor C5 to form the output end of the signal filter; the other ends of the inductor L1, the capacitor C1, the inductor L3, the capacitor C2, the inductor L5 and the capacitor C5 are grounded.
In the scheme, the signal rectifier consists of an amplifying circuit, a multiplying circuit and a low-pass filter circuit; the input end of the amplifying circuit forms the input end of the signal rectifier; the output end of the amplifying circuit is connected with one input end of the multiplying circuit, and the other input end of the multiplying circuit is connected with the output end of the signal generator; the output end of the multiplication circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit forms the output end of the signal rectifier.
In the scheme, the signal amplifier is a second-order differential amplification circuit constructed by 7 MOS transistors M1-M7; the grid of the MOS transistor M1 forms the negative input end V of the signal amplifiernThe gate of the MOS transistor M2 forms the positive input terminal V of the signal amplifierpThe source electrode of the MOS transistor M1 and the source electrode of the MOS transistor M2 are connected with the drain electrode of the MOS transistor M7; the drain electrode of the MOS tube M1 is connected with the drain electrode of the MOS tube M3, the grid electrode of the MOS tube M3 and the grid electrode of the MOS tube M4; the drain electrode of the MOS tube M2 is connected with the drain electrode of the MOS tube M4 and the grid electrode of the MOS tube M5; the source electrode of the MOS transistor M3, the source electrode of the MOS transistor M4 and the source electrode of the MOS transistor M5 are connected; the drain electrode of the MOS transistor M5 is connected with the drain electrode of the MOS transistor M6 to form the output end V of the signal amplifierout(ii) a The gate of the MOS transistor M6 is connected with a bias voltage VG6(ii) a The gate of the MOS transistor M7 is connected with another bias voltage VG7(ii) a The sources of the MOS transistors M6 and M7 are grounded.
Compared with the prior art, the invention has the following characteristics:
1. the invention overcomes the defects that the existing virus detection instrument has larger volume and low integration level and is not suitable for being worn on the body, and has the characteristics of small volume, light weight and convenient integration and disassembly, thereby being an intelligent wearable device;
2. the invention overcomes the defects that the prior virus detection means has longer period and needs a certain time to obtain the detection result, and the detection time period is shorter.
Drawings
Fig. 1 is a schematic block diagram of a virus alarm device of an alarm-enabled anti-virus wearable device.
Fig. 2 is a schematic block diagram of a periodic triangular wave signal generator.
Fig. 3(a) shows an excitation signal of the periodic triangular wave signal generator.
Fig. 3(b) shows the corresponding signals of the periodic triangular wave signal generator.
Fig. 4 shows the excitation signal of a differential square-wave signal generator.
Fig. 5 is a schematic structural diagram of the detection bottle. Reference numbers in the figures: 1. the device comprises a bottle body, a gas inlet pipe, a detection electrode, a detection solution, a signal outgoing line and a detection electrode, wherein the bottle body 2 is provided with a gas inlet pipe 3; 6. the swing lever is reset.
Fig. 6 is a working principle diagram of the detection bottle.
Fig. 7 is a schematic diagram of a signal filter.
Fig. 8 is a schematic diagram of a signal rectifier.
Fig. 9 is a schematic diagram of a signal amplifier.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings in conjunction with specific examples.
An anti-virus wearable device capable of alarming is composed of an anti-virus wearable device and a virus alarming device arranged on the anti-virus wearable device. The virus alarm device consists of a signal generator, more than one detection bottle, a signal filter, a signal rectifier, a signal amplifier, a controller and an alarm, and is shown in figure 1. The detection vial is fixed on the outside of the anti-virus wearing device, i.e., on the side in contact with the virus. Each detection bottle comprises a bottle body 1, an air inlet pipe 2, two detection electrodes 3 and a detection solution 4. The bottle body 1 is a hollow closed cavity, and the detection solution 4 is contained in the bottle body 1. The two detection electrodes 3 are simultaneously soaked in the detection solution 4 and are arranged at intervals. One piece of detection electrode 3 is led out of the bottle body 1 through a signal lead-out wire 5 and forms the input end of the detection bottle. The other detecting electrode 3 is led out of the bottle body 1 through a signal leading-out wire 5 and forms the output end of the detecting bottle. The air inlet pipe 2 is arranged on the bottle body 1 in a penetrating way, one end of the air inlet pipe is positioned in the detection solution 4 in the bottle body 1, and the other end of the air inlet pipe is positioned outside the bottle body 1. The signal generator, the signal filter, the signal rectifier, the signal amplifier, the controller and the alarm are arranged in the closed shell. The output end of the signal generator is connected with the input end of the detection bottle. The output end of the detection bottle is connected with the input end of the signal filter, the output end of the signal filter is connected with the input end of the signal rectifier, the output end of the signal rectifier is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the controller, and the output end of the controller is connected with the input end of the alarm.
1) Signal generator
The signal generator is used as a servo element and periodically sends an electrical excitation signal with a certain frequency to the detection bottle under the control of the microcontroller. The signal generator provides an excitation signal for measuring the electrical properties of the solution, and such excitation signals can be of many kinds. In the invention, the adopted signal generator is a periodic triangular wave signal generator or a differential square wave signal generator.
(1) Periodic triangular wave signal generator
Referring to fig. 2, the periodic triangular wave signal generator is mainly composed of an integrator. The inverting input terminal of the integrator is connected with the output terminal of the integrator through a capacitor, and the non-inverting input terminal of the integrator is grounded. The inverting input of the integrator is connected via a resistor to 3 different input signals, namely a + Vref voltage signal, a-Vref voltage signal and a 0V voltage signal. The switching of these 3 signals is controlled by a sequential logic CLK to control the rising and falling edge times. The integrator obtains a triangular wave by integrating two voltage signals (+ Vref voltage signal and-Vref voltage signal) having the same magnitude and opposite directions. The voltage of 0V is used for calibration of the signal generator. The output terminal of the integrator outputs a triangular wave signal Vt. The excitation signal from the periodic triangular wave generator is a triangular wave signal characterized by a rising edge, a falling edge, and peaks at the intersection of the rising and falling edges, as shown in fig. 3 (a). When the triangular wave signal is loaded on the detection solution 4 through the detection electrode 3, the detection solution 4 will generate a voltage-current hysteresis curve as shown in fig. 3(b), and output via another detection electrode 3, thereby achieving the purpose of measurement. The periodic triangular wave signal generator has the characteristic of simple structure, thereby being easier to integrate.
(2) Differential square wave signal generator
The excitation signal generated by the differential square-wave signal generator is shown in fig. 4, and although it is more complex than the triangular signal, it has the advantage that the complex square-wave signal can have better resolution for detecting the electrical characteristics of the solution 4. From the perspective of analog signals, the generation of a differential square wave signal is achieved by a superposition of a square wave signal and a step signal. From a digital signal perspective, the differential square wave signal requires a sufficient number of bit levels to achieve.
2) Detection bottle
The detection bottle contains the detection solution 4, the detection solution 4 has certain electrical characteristics under the excitation of the signal generator, and when air with virus is sucked into the detection bottle, the electrical characteristics of the detection solution 4 of the detection bottle are changed, so that a response signal is generated and output to the signal filter. Can make the air admission detect the bottle through compressed air, can utilize miniature turbine for example with the leading-in detection bottle of ambient air to improve the detection effect of virus. The detection bottle is embedded in a protective device at each important contact site of the body, such as the outside of a mask, gloves or protective clothing. When the quantity of detecting the bottle is more than 2, these detect the bottle and adopt the distributed to fix in the different positions department of antivirus wearing equipment, detect the bottle and should be convenient for dismouting to reuse, and the circuit that goes into and out to detect the bottle is bound next to the shin.
The test vial needs to meet several criteria: the ideal electrical characteristics of the detection bottle, such as the impedance, etc., should be only related to the solution itself, and not related to the environmental temperature, time variation, etc., i.e., the properties must be stable. ② the electrode should have electrochemical corrosion resistance, if the electrode and the solution produce electrochemical reaction, the detection will have deviation. Since the solution is integrated into wearing devices such as masks, gloves, protective clothing, etc., the solution should be non-toxic or low-toxic. Based on the above criteria, the detection electrode 3 of the detection bottle is a silver (Ag) electrode with a silver chloride (AgCl) coating, and the detection solution 4 is a potassium chloride (KCl) solution.
In order to prolong the service time of the detection bottle, the invention uses 2 detection bottles which are overlapped together as shown in figure 5, namely, the detection bottle is formed by combining a first detection bottle and a second detection bottle. Under initial condition, first detection bottle is located the upper strata, and the second detects the bottle and is located the lower floor, utilizes first detection bottle to realize detecting. At this time, the detection electrode 3 of the first detection vial positioned on the upper layer enters the detection solution 4 and is in an operating state; the detection electrode 3 of the second detection bottle positioned at the lower layer does not invade into the detection solution 4 and is in a non-operating state; air is introduced into the upper bottle body 1 from the air inlet pipe 2 of the first detection bottle positioned at the upper layer. After the first detection bottle that is located the upper strata has detected the virus and has existed, manual or controller control setting is detected the reset rotary rod 6 between bottle and the lower floor detection bottle and is rotated 180 degrees from top to bottom whole detection bottle, makes first detection bottle be located the lower floor promptly, and the second detects the bottle and is located the upper strata, utilizes the second to detect the bottle and realizes detecting. At this time, the detection electrode 3 of the second detection vial positioned on the upper layer enters the detection solution 4 and is in an operating state; the detection electrode 3 of the first detection bottle positioned at the lower layer does not invade into the detection solution 4 and is in a non-operating state; air is introduced into the upper bottle body 1 from the air inlet pipe 2 of the second detection bottle positioned at the upper layer.
Since the virus carries a biological signal, the biological signal needs to be converted into an electrical signal in some way, which is convenient for further processing. As shown in fig. 6, after the virus enters the solution, it is decomposed into characteristic molecules of the virus in the solution. The virus decomposition can be achieved by external stimulation or by adding a decomposition liquid (e.g. a biologically active enzyme) to the solution. In aqueous solution, the characteristic molecules of the virus hydrate into corresponding positive and negative ions. According to the Grahame model and the Nernst-Planck model, the solution has macroscopic capacitance and resistance, and the capacitance and resistance are related to the types of positive and negative ions decomposed by viruses. The capacitance and resistance of the solution can be measured electrically, for example by a Wheatstone bridge method or a phase-locked amplification method.
3) Signal filter
The signal filter is used for filtering the electrical noise in the response signal output by the detection bottle, wherein the frequency band of the signal filter is consistent with the frequency band of the signal generator. Considering that a measurement signal for measuring impedance is a high-frequency signal and a light weight requirement is required as a wearable device, the signal filter is a Chebyshev I-type band-pass filter and is realized by a microstrip line. The Chebyshev I-type band-pass filter, as shown in FIG. 7, includes 5 inductors L1-L5 and 5 capacitors C1-C5. One end of the inductor L1, one end of the inductor L2 and one end of the capacitor C1 are connected to form an input end of the signal filter. The other end of the inductor L2 is connected to one end of the capacitor C2, and the other end of the capacitor C2 is connected to one ends of the inductor L3, the inductor L4 and the capacitor C3. The other end of the inductor L4 is connected to one end of the capacitor C4, and the other end of the capacitor C4 is connected to one end of the inductor L5 and one end of the capacitor C5 to form the output end of the signal filter. The other ends of the inductor L1, the capacitor C1, the inductor L3, the capacitor C2, the inductor L5 and the capacitor C5 are grounded. The microstrip line is adopted to realize capacitance and inductance in the Chebyshev I-type band-pass filter, and the size of the microstrip line is in millimeter (mm) level, so that the device is convenient to integrate on the wearable device.
4) Signal rectifier
The signal rectifier is used for converting the filtered alternating current signal into a direct current signal. The principle of the signal rectifier is shown in fig. 8, and it mainly consists of an amplifying circuit, a multiplying circuit and a low-pass filtering circuit. The input end of the amplifying circuit forms the input end of the signal rectifier and is connected with the output end of the signal filter. The output end of the amplifying circuit is connected with one input end of the multiplying circuit, and the other input end of the multiplying circuit is connected with the output end of the signal generator. The output end of the multiplication circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit forms the output end of the signal rectifier and is connected with the input end of the signal amplifier. The invention realizes the rectification of the signal by using a signal rectifier with a phase-locked structure, wherein Y omega is the impedance of the solution, and the impedance characteristic of the solution is changed before and after the solution is contacted with the virus. After the phase-locked structure, the output is the real part of the impedance, and for the imaginary part of the impedance, a signal branch is added, and the phase shift is performed on the branch by 90 degrees, so that the imaginary part of the impedance is obtained.
5) Signal amplifier
Since the signal rectifier outputs a dc component, a differential amplifier circuit is needed to amplify the dc component to better suppress the common mode. The signal amplifier is a second-order differential amplification circuit constructed by 7 MOS transistors M1-M7, as shown in FIG. 9. The grid of the MOS transistor M1 forms the negative input end V of the signal amplifiernThe gate of the MOS transistor M2 forms the positive input terminal V of the signal amplifierpThe source of MOS transistor M1 and the source of MOS transistor M2 are connected to the drain of MOS transistor M7. The drain of MOS transistor M1 is connected to the drain of MOS transistor M3, the gate of MOS transistor M3 and the gate of MOS transistor M4. The drain of MOS transistor M2 is connected to the drain of MOS transistor M4 and the gate of MOS transistor M5. The source electrode of the MOS transistor M3, the source electrode of the MOS transistor M4 and the source electrode of the MOS transistor M5 are connected. The drain electrode of the MOS transistor M5 is connected with the drain electrode of the MOS transistor M6 to form the output end V of the signal amplifierout. The gate of the MOS transistor M6 is connected with a bias voltage VG6So that M6 functions as a current source. The gate of the MOS transistor M7 is connected with another bias voltage VG7Making M7 the current source of the second order amplification circuit. The sources of the MOS transistors M6 and M7 are grounded.
The MOS transistors M1 and M2 function as signal input MOS pairs (input pair), the MOS transistors M3 and M4 function as current mirrors, the MOS transistor M5 is a second-order differential amplification MOS transistor, and the MOS transistors M6 and M7 function as current sources, wherein the MOS transistor M6 is a first-order amplification current source, and the MOS transistor M7 is a second-order amplification current source. MOS transistor M1-M2-M3-M4-M7 realizes a differential amplifier circuit of a first order, and MOS transistor M5-M6 realizes an amplifier circuit of a second order.
6) Controller
The controller receives the electrical signal amplified by the signal amplifier and judges whether the signal is a virus signal or not by comparing the signal. The controller grasps the logical relationship between the individual elements, for example, the detection device stands by when stationary and detects without interruption when moving. The controller stores the electrical characteristics of the virus, and when the electrical characteristics of the detection bottle are detected to be matched with the characteristics of the virus, the controller controls the alarm element to give an alarm, records time and even places, and resets the detection bottle to wait for the next measurement.
In addition, the controller controls the operation of the modules for coordination. Firstly, the switch and the operation frequency band of the signal generator are controlled, and the frequency band of the signal filter is controlled at the same time, so that the frequency band of the signal filter is consistent with that of the signal generator, and noise parts of other frequency spectrums can be filtered conveniently. Second, the signal change in the test vial is monitored and compared to a pre-stored electrical signal of the virus solution (e.g., resistance and/or capacitance of the virus solution). When the signal is found to be identical, the signal is sent to the alarm, and the alarm can remind a user that the virus is detected by sounding a buzzer or lighting an LED lamp. While recording the current time location and generating a time node record. Finally, it will also reset the test vial and other various components so that the test vial and other components can be tested again.
7) Alarm device
The alarm is in charge of giving an alarm to the user, and can remind the user of paying attention by lighting the LED lamp and sounding the buzzer.
The working process of the invention is as follows:
the signal generator sends out a low-voltage alternating voltage signal with a certain frequency, and the low-voltage alternating voltage signal is led to the anode of the detection bottle, namely one detection electrode 3 through a signal lead-out wire 5.
The test vial holds a test solution 4 and has certain electrical properties, which are macroscopically represented by the resistance and/or capacitance of the solution. In this case, the resistance and/or capacitance of the solution can be detected by using two detection electrodes 3 immersed in the detection solution 4. After viruses are mixed in the detection bottle, the viruses can hydrolyze to form ions with certain components in water, and the conductivity of the solution can be changed by the anions and the cations, so that the resistance of the solution is changed. Under the condition of external alternating current, the anions and the cations can generate electrophoresis effect, so that the capacitance of the solution on the macroscopic scale is changed. Because the change of the electrical characteristics of the solution is different due to different anions and cations, whether the ions in the detection solution are the target ions or not can be judged by comparison, and therefore the fact that viruses enter the solution and corresponding ions are hydrolyzed is judged. The value of the resistance and/or capacitance of the solution to be measured can be measured by inserting a negative and positive electrode into the solution and applying a low voltage alternating current that can be modulated in frequency. The specific method is bridge type measuring method, 4-wire current method, phase locking measuring method, etc., and the obtained resistance and/or capacitance value can be led out to a signal filter through a cathode of the detection bottle, namely another detection electrode 3, via a signal leading-out wire 5, and then processed in the next step.
After the electrical signal is led out, the electrical signal needs to be filtered by a signal filter to filter noise, and the filtering frequency band of the signal filter needs to be consistent with the frequency band of the signal generator. And then, preprocessing the acquired signals to convert the electrical characteristics into electrical signals which can be identified by the microcontroller, namely, rectifying the signals through a signal rectifier, amplifying the signals by using a signal amplification circuit, and then sending the signals to the controller.
The microcontroller judges whether the virus is in the detection bottle or not by comparing the obtained electrical characteristics with the stored characteristics of the virus. For example, the microcontroller detects that the resistance and/or capacitance values of the solution match the stored characteristics, indicating that ions hydrolyzed by the virus are present in the solution, indicating that the virus has entered the test vial. If the microcontroller judges that the signals are consistent and detects that the virus exists in the bottle, the microcontroller performs the following operations: firstly, the micro controller can send a signal to an alarm element, and light an LED lamp or start a buzzer for alarming. Secondly, the microcontroller records the time and even the place at the moment, so that the depth detection of the place can be conveniently carried out by other equipment. Finally, the microcontroller resets the virus detection bottle, so that the detection device can detect viruses at other places again.
The invention utilizes the novel sensor to monitor the chemical performance characteristics of the virus, adopts an electrochemical method, and the detected substance is a solution containing ions, and once the chemical performance of the virus is detected, an alarm is given to remind a user of wearing equipment which needs to be used with special attention, and the wearing equipment is immediately treated after the protective article is taken off, so that the alarm and the real effective protective effect can be achieved.
It should be noted that, although the above-mentioned embodiments of the present invention are illustrative, the present invention is not limited thereto, and thus the present invention is not limited to the above-mentioned embodiments. Other embodiments, which can be made by those skilled in the art in light of the teachings of the present invention, are considered to be within the scope of the present invention without departing from its principles.

Claims (8)

1. An anti-virus wearable device capable of alarming comprises an anti-virus wearable device and is characterized in that a virus alarming device is arranged on the anti-virus wearable device; the virus alarm device comprises a signal generator, at least one detection bottle, a signal filter, a signal rectifier, a signal amplifier, a controller and an alarm;
the detection bottle is fixed on the outer side of the anti-virus wearing equipment, namely the side which is contacted with the virus; each detection bottle consists of a bottle body (1), an air inlet pipe (2), two detection electrodes (3) and a detection solution (4); the bottle body (1) is a hollow closed cavity, and the bottle body (1) is filled with a detection solution (4); two detection electrodes (3) are simultaneously soaked in the detection solution (4) and are arranged at intervals; a detection electrode (3) is led out of the bottle body (1) through a signal lead-out wire (5) and forms the input end of the detection bottle; the other detection electrode (3) is led out of the bottle body (1) through a signal lead-out wire (5) and forms the output end of the detection bottle; the air inlet pipe (2) is arranged on the bottle body (1) in a penetrating way, one end of the air inlet pipe extends into the detection solution (4) in the bottle body (1), and the other end of the air inlet pipe extends out of the bottle body (1);
the signal generator, the signal filter, the signal rectifier, the signal amplifier, the controller and the alarm are arranged in a closed shell; the output end of the signal generator is connected with the input end of the detection bottle; the output end of the detection bottle is connected with the input end of the signal filter, the output end of the signal filter is connected with the input end of the signal rectifier, the output end of the signal rectifier is connected with the input end of the signal amplifier, the output end of the signal amplifier is connected with the input end of the controller, and the output end of the controller is connected with the input end of the alarm.
2. The anti-virus wearable device capable of alarming as claimed in claim 1, wherein when the number of the detection bottles is more than 2, the detection bottles are fixed at different positions of the anti-virus wearable device in a distributed manner.
3. The anti-virus wearable device capable of alarming as claimed in claim 1 or 2, wherein the detection electrode (3) is a silver electrode with a silver chloride coating, and the detection solution (4) is a potassium chloride solution.
4. The anti-virus wearable device capable of alarming as claimed in claim 1, wherein the signal generator is a periodic triangular wave signal generator or a differential square wave signal generator.
5. The anti-virus wearable device capable of alarming as claimed in claim 1, wherein the signal filter is a chebyshev I-type band-pass filter implemented by a microstrip line.
6. The anti-virus wearable device capable of alarming as claimed in claim 5, wherein the Chebyshev I-type band-pass filter comprises 5 inductors L1-L5 and 5 capacitors C1-C5; one end of the inductor L1, one end of the inductor L2 and one end of the capacitor C1 are connected to form an input end of the signal filter; the other end of the inductor L2 is connected with one end of a capacitor C2, and the other end of the capacitor C2 is connected with one ends of an inductor L3, an inductor L4 and a capacitor C3; the other end of the inductor L4 is connected with one end of the capacitor C4, and the other end of the capacitor C4 is connected with one ends of the inductor L5 and the capacitor C5 to form the output end of the signal filter; the other ends of the inductor L1, the capacitor C1, the inductor L3, the capacitor C2, the inductor L5 and the capacitor C5 are grounded.
7. The anti-virus wearable device capable of alarming as claimed in claim 1, wherein the signal rectifier is composed of an amplifying circuit, a multiplying circuit and a low-pass filtering circuit; the input end of the amplifying circuit forms the input end of the signal rectifier; the output end of the amplifying circuit is connected with one input end of the multiplying circuit, and the other input end of the multiplying circuit is connected with the output end of the signal generator; the output end of the multiplication circuit is connected with the input end of the low-pass filter circuit, and the output end of the low-pass filter circuit forms the output end of the signal rectifier.
8. The anti-virus wearable device capable of alarming as claimed in claim 1, wherein the signal amplifier is a second-order differential amplification circuit constructed by 7 MOS transistors M1-M7; the grid of the MOS transistor M1 forms the negative input end V of the signal amplifiernThe gate of the MOS transistor M2 forms the positive input terminal V of the signal amplifierpThe source electrode of the MOS transistor M1 and the source electrode of the MOS transistor M2 are connected with the drain electrode of the MOS transistor M7; the drain electrode of the MOS tube M1 is connected with the drain electrode of the MOS tube M3, the grid electrode of the MOS tube M3 and the grid electrode of the MOS tube M4; the drain electrode of the MOS tube M2 is connected with the drain electrode of the MOS tube M4 and the grid electrode of the MOS tube M5; the source electrode of the MOS transistor M3, the source electrode of the MOS transistor M4 and the source electrode of the MOS transistor M5 are connected; the drain electrode of the MOS transistor M5 is connected with the drain electrode of the MOS transistor M6 to form the output end V of the signal amplifierout(ii) a The gate of the MOS transistor M6 is connected with a bias voltage VG6(ii) a The gate of the MOS transistor M7 is connected with another bias voltage VG7(ii) a The sources of the MOS transistors M6 and M7 are grounded.
CN202010895438.6A 2020-08-31 2020-08-31 Anti-virus wearable device capable of alarming Pending CN112014436A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010895438.6A CN112014436A (en) 2020-08-31 2020-08-31 Anti-virus wearable device capable of alarming

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010895438.6A CN112014436A (en) 2020-08-31 2020-08-31 Anti-virus wearable device capable of alarming

Publications (1)

Publication Number Publication Date
CN112014436A true CN112014436A (en) 2020-12-01

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Country Status (1)

Country Link
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