Bacteria and bacterial dust detection device

Abstract

The present invention relates to a bacteria and bacterial dust detection device, comprising a plurality of conductive micro-coils, a coil pitch adjustment device, a display terminal, and a controller. The coil pitch adjustment device comprises a linear guide rail, a first slider and a second slider disposed on the linear guide rail, a first insulating connector connected to the first slider, and a second insulating connector connected to the second slider. The first insulating connector is provided with a positive electrode sheet, and the second insulating connector is provided with a negative electrode sheet. The ends of each conductive micro-coil are welded to the positive electrode sheet and the negative electrode sheet, respectively. The controller comprises a processor, a power supply, and an impedance tester. The positive electrode sheet and the negative electrode sheet are respectively electrically connected to the impedance tester for detecting the total impedance value of each conductive micro-coil. The processor can calculate the bacterial concentration value in the current air environment based on the total impedance value of each conductive coil. The present invention can quickly detect the concentration of bacteria and bacterial dust in the air environment.

Description

Technical Field

[0001] The present invention relates to the technical field of detecting bacteria and bacterial dust in the air, and in particular to a detection device capable of quickly detecting the concentration of bacteria and bacterial dust in the air. Background Art

[0002] Bacteria are one of the main groups of organisms, with diameters ranging from 0.5 to 5 μm. Airborne bacteria are often carried on airborne dust particles, which are solid particles with a diameter of less than 10 μm. They can float in the atmosphere for a long time and are sometimes called suspended dust. They are also called inhalable particulate matter, abbreviated as PM10.

[0003] Hospital operating rooms, microbiology laboratories, and other places (hereinafter referred to as sterile places) have high requirements for air quality and regularly monitor and disinfect the concentration of bacteria and bacterial dust in the environment. It should be noted that if disinfection is not carried out before monitoring the concentration of bacteria and bacterial dust in the environment, frequent disinfection may lead to a waste of resources; or if disinfection is not carried out in a timely manner, it may lead to the growth of bacteria and bacterial dust.

[0004] Existing methods for detecting bacterial and bacterial dust concentrations in the environment generally use the plate exposure method: after exposing a nutrient agar plate to a sampling point for 5-30 minutes, the plate is placed in an incubator and incubated for several hours before being tested using a sophisticated microbiological identification instrument. This process is relatively cumbersome and the detection speed is slow (it requires several hours of incubation in an incubator).

[0005] In fact, when conducting microbial testing in the operating rooms and microbiology laboratories of the above-mentioned hospitals, it is not necessary to obtain a very accurate bacteria and bacterial dust concentration value. It is only necessary to detect when the bacteria and bacterial dust concentration value in the environment exceeds a certain preset value to determine the need to disinfect the air environment.

[0006] Based on this, it is necessary to design a bacteria and bacterial dust detection device that can quickly detect the concentration of bacteria and bacterial dust in the air environment. Summary of the Invention

[0007] Therefore, in order to solve the above problems, the present invention proposes a bacteria and bacterial dust detection device, which can quickly detect the concentration of bacteria and bacterial dust in the air environment.

[0008] To achieve the above object, the present invention adopts the following technical solutions:

[0009] A bacteria and bacterial dust detection device is used to detect the bacterial concentration value in the air environment, including multiple conductive micro coils, a coil pitch adjustment device, a display terminal, and a controller;

[0010] The coil pitch adjustment device includes a linear guide rail, a first slider disposed on the linear guide rail and movable left and right along the linear guide rail, a first insulating connector fixedly connected to the first slider, a second slider disposed on the linear guide rail and movable left and right along the linear guide rail, and a second insulating connector fixedly connected to the second slider;

[0011] A positive electrode sheet is provided on the first insulating connector, and a first end of each of the conductive micro-coils is welded to the positive electrode sheet;

[0012] A negative electrode sheet is provided on the second insulating connector, and the second end of each of the conductive micro-coils is welded to the negative electrode sheet;

[0013] The positive electrode sheet and the negative electrode sheet are arranged parallel to each other;

[0014] Adjusting the pitch of each of the conductive micro-coils by adjusting the distance between the first slider and the second slider;

[0015] The controller includes a processor, a power supply, and an impedance tester;

[0016] When bacteria and bacterial dust in the air environment are adsorbed on each of the conductive micro-coils, the total impedance value of each of the conductive micro-coils changes;

[0017] The positive electrode sheet and the negative electrode sheet are respectively electrically connected to an impedance tester for detecting the total impedance value of each conductive micro-coil between the positive electrode sheet and the negative electrode sheet;

[0018] The impedance tester is electrically connected to the processor and transmits the detected total impedance value of each of the conductive micro-coils to the processor;

[0019] The processor pre-establishes a corresponding relationship between the total impedance value of each conductive micro-coil and the bacterial concentration value in the air environment;

[0020] The processor can obtain the bacterial concentration value in the current air environment according to the total impedance value of each conductive coil;

[0021] The power supply is electrically connected to the power supply terminal of the processor to supply power to the processor;

[0022] The display terminal is electrically connected to the processor and is used to display the bacterial concentration value in the current air environment.

[0023] Furthermore, before the pitch of the conductive micro-coil is adjusted by the coil pitch adjustment device, the diameter of the conductive micro-coil is 0.5 μm-15 μm, and the pitch of the conductive micro-coil is 0.05 μm-5 μm;

[0024] The pitch of the conductive microcoil can be adjusted by stretching or compressing the pitch adjusting device.

[0025] Furthermore, it also includes sound and light alarms;

[0026] The sound and light alarm is electrically connected to the processor.

[0027] Furthermore, the controller further includes a communication interface;

[0028] The communication interface is communicatively connected to the processor.

[0029] By adopting the above technical solution, the beneficial effects of the present invention are:

[0030] When using this bacteria and bacterial dust detection device, the pitch of each conductive microcoil can be adjusted according to the size of the bacteria and bacterial dust to be detected, so that the bacteria and bacterial dust to be detected are more easily adsorbed on the conductive microcoil. By adjusting the pitch of the conductive microcoil to a moderate level, the bacteria and bacterial dust to be detected can be adsorbed. When bacteria and bacterial dust in the air environment are adsorbed on each conductive microcoil, the total impedance value of each conductive microcoil changes. The total impedance value of each conductive microcoil is detected by an impedance tester and transmitted to the processor. Therefore, a corresponding relationship between the total impedance value of each conductive microcoil and the bacterial concentration value in the air environment can be pre-established in the processor. The processor derives the bacterial concentration value in the current air environment based on the corresponding total impedance value of each conductive coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural schematic diagram of adjusting the pitch of a conductive micro-coil on a coil pitch adjustment device in embodiment 1 of the present invention.

[0032] Figure 2 1 is a schematic diagram of the state of adjusting the pitch of the conductive micro-coil in the first embodiment of the present invention.

[0033] Figure 3 This is a circuit connection block diagram of embodiment 1 of the present invention.

[0034] Figure 4 It is a cross-sectional view of a coil pitch adjustment device according to a fifth embodiment of the present invention.

[0035] Figure 5 This is a circuit connection block diagram of embodiment 5 of the present invention. DETAILED DESCRIPTION

[0036] The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

[0037] Example 1:

[0038] refer to Figure 1 、 Figure 2 and Figure 3 As shown, this embodiment provides a device for detecting the bacterial concentration in an air environment, comprising: a coil pitch adjustment device 1 , a plurality of conductive micro-coils 2 , a positive electrode sheet 3 , a negative electrode sheet 4 , a controller 5 , a display terminal 6 , and an audible and visual alarm 7 .

[0039] like Figure 1 The coil pitch adjustment device 1 includes a linear guide rail 10, a first slider 11 arranged on the linear guide rail 10 and movable left and right along the linear guide rail, a first insulating connector 13 fixedly connected to the first slider 11, a second slider 12 arranged on the linear guide rail 10 and movable left and right along the linear guide rail 10, and a second insulating connector 14 fixedly connected to the second slider 12.

[0040] The positive electrode sheet 3 is disposed on the first insulating connector 13 , and the first end of each of the conductive micro-coils 2 is welded to the positive electrode sheet 3 .

[0041] The negative electrode sheet 4 is disposed on the second insulating connector 14 , and the second end of each of the conductive micro-coils 2 is welded to the negative electrode sheet 4 .

[0042] The positive electrode sheet 3 and the negative electrode sheet 4 are arranged parallel to each other.

[0043] The pitch of each of the conductive micro-coils 2 is adjusted by adjusting the distance between the first slider 11 and the second slider 12 .

[0044] Before the pitch of the conductive micro-coil 2 is adjusted by the coil pitch adjustment device 1 , the diameter of the conductive micro-coil 2 is 0.5 μm-15 μm, and the pitch of the conductive micro-coil 2 is 0.05 μm-3 μm.

[0045] The diameter and pitch of each of the conductive micro-coils 2 may be the same or different.

[0046] The pitch of the conductive micro-coil 2 can be adjusted by stretching or compressing the coil pitch adjusting device 1 .

[0047] Specifically, when using this microparticle device, the pitch of each conductive microcoil 2 needs to be adjusted according to the size of the bacteria and bacterial dust to be detected, so that the bacteria and bacterial dust to be detected are more easily adsorbed on the conductive microcoil 2. It should be noted that if the pitch of the conductive microcoil 2 is too large or too small, it will not easily adsorb the bacteria and bacterial dust to be detected.

[0048] When bacteria and bacterial dust in the air environment are adsorbed on the conductive micro-coils 2, the total impedance value of the conductive micro-coils 2 changes.

[0049] The controller 5 includes a processor 51 , a power supply 52 , an impedance tester 53 , and a communication interface 54 .

[0050] The processor 51, power supply 52, impedance meter 53, and communication interface 54 are all conventional electronic devices. The positive electrode sheet 3 and the negative electrode sheet 4 are each electrically connected to the impedance meter 53. The impedance meter 53 is used to measure the total impedance of each conductive microcoil 2 between the positive electrode sheet 3 and the negative electrode sheet 4. Preferably, the impedance meter 53 is a WK4100 LCR meter.

[0051] The impedance tester 53 transmits the detected total impedance value of each of the conductive micro-coils 2 to the processor 51 .

[0052] The processor 51 pre-establishes a corresponding relationship between the total impedance value of each conductive micro-coil 2 and the bacterial concentration value in the air environment (this can be achieved by using the present bacteria and bacterial dust detection device as an implementation group and the microbial identification instrument as a control group, and simultaneously detecting multiple groups of bacterial concentration value data in the air environment, and establishing a corresponding relationship between the total resistance of the conductive micro-coil 2 detected by the present bacteria and bacterial dust detection device and the bacterial concentration value in the air environment detected by the microbial identification instrument).

[0053] The processor 51 can obtain the bacterial concentration value in the current air environment according to the total impedance value of each conductive coil 2.

[0054] The power supply 52 is electrically connected to a power supply terminal of the processor 51 to supply power to the processor 51 .

[0055] The display terminal 6 is electrically connected to the processor 51 and is used to display the bacterial concentration value in the current air environment.

[0056] The sound and light alarm 7 is electrically connected to the processor 51. When the bacterial concentration value in the current air environment is detected to exceed a certain threshold (pre-established in the processor 51), the processor 51 controls the sound and light alarm 7 to sound an alarm to prompt the staff to disinfect.

[0057] The communication interface 54 is in communication connection with the processor 51 . The bacteria and bacterial dust detection device can also be connected to a host computer via the communication interface 54 to transmit the detected bacteria concentration value data in the current air environment to the host computer.

[0058] This bacteria and bacterial dust detection device can quickly detect the concentration of bacteria and bacterial dust in the air environment. It should be noted that the bacteria concentration value in the current air environment detected by this bacteria and bacterial dust detection device has errors, but it can be used to roughly detect the bacteria concentration value in the air environment and determine whether the air environment needs to be disinfected. It is practical.

[0059] The preparation method of the conductive microcoil 2 used in this embodiment is as follows: it is synthesized by chemical vapor deposition, using a mixture of titanium carbide and copper-iron alloy as a catalyst, the reaction temperature = 660°C, H2S / 2 = 90sccm (ml / min), C2H2 = 60sccm, H2 = 100sccm, N2 = 100sccm, and the diameter of the obtained single spiral micro-carbon coil is 0.5-2μm, and the pitch size is 0.05μm-0.5μm. The pitch range is controlled by adjusting the raw material concentration and temperature; the pitch is further adjusted by a coil pitch adjustment device. Because of its small size and relatively uniformity, it is suitable for detecting cocci.

[0060] Example 2:

[0061] The conductive microcoil 2 employed in this embodiment is prepared using the same apparatus as in Example 1, using chemical vapor deposition (CVD) with an iron-based alloy catalyst (Fe:Ni:Cr = 8.8:1:0.2). A high-content Ni-Fe alloy catalyst is used to produce a single-helical microcarbon coil 1-2 mm long with a uniform pitch. The coil is heated to 650-750°C, resulting in a diameter of 2-5 μm. The pitch can be controlled by adjusting the raw material concentration and temperature; further adjustment is made using a coil pitch adjustment device. This method is suitable for detecting bacilli. The microcoil produced by this method exhibits high crystallinity, strength, and durability.

[0062] Example 3:

[0063] The conductive microcoil 2 employed in this embodiment was prepared using a chemical vapor deposition method using a Ni-based alloy catalyst and a molecular sieve powder-supported catalyst with a transition metal ratio of Fe:Ni:Cr = 1:8.8:0.2. The reaction temperature was 750–790°C. This yielded a single helical microcarbon coil with a diameter of approximately 10 microns and high elasticity, ranging from 5 to 15 μm. The pitch ranged from 2 μm to 5 μm, controlled by adjusting the raw material concentration and temperature. The pitch was further adjusted using a coil pitch adjustment device. Due to this wide range of sizes, the microcoil is well-suited for detecting bacilli. Due to its high elasticity, the microcoil prepared by this method is easily stretched and therefore more convenient to operate.

[0064] Example 4:

[0065] Using the same apparatus as Example 1, the conductive microcoil 2 employed in this example is a TiN spring fabricated using chemical vapor deposition. A graphite substrate is placed in a reaction vessel, coated with PdCl2 and NiCl2. Ar gas is then filled into the reaction vessel (B). After heating to 1050°C, hydrogen is used as a carrier, and PCl3 (2 mL / min) is introduced. TiCl4 (10 mL / min), acetylene (10 mL / min), and nitrogen (100 mL / min) are then introduced into the reaction vessel (B). After 3 hours, a titanium nitride (TiN) double-helical microspring with a diameter of 2-5 μm and a pitch of 0.5-2 μm is obtained. The pitch range is controlled by adjusting the raw material concentration and temperature; the pitch is further adjusted using a coil pitch adjustment device. Suitable for detecting Helicobacter pylori. Because TiN microcoils have higher conductivity and better electromagnetic properties than carbon microcoils, they offer higher test sensitivity, more stable data, and are also strong and durable.

[0066] Example 5:

[0067] refer to Figure 4 and Figure 5 Based on the above-mentioned embodiment 1, embodiment 2, embodiment 3, embodiment 4, or embodiment 5, this specific embodiment further improves the coil pitch adjustment device 1 as follows:

[0068] The linear guide rail 10 is provided with a mounting groove 100 .

[0069] A first servo stepper motor 17 is mounted on the left side of the mounting slot 100. The main shaft of the servo stepper motor 17 is connected to a lead screw 15. The first slider 11 is a nut. When the first servo stepper motor 17 rotates, the lead screw 15 rotates synchronously. The first slider 11 (the nut) does not rotate, but can move left and right based on the forward and reverse rotation of the first servo stepper motor 17.

[0070] Similarly, a second servo stepper motor 18 is mounted on the left side of the mounting slot 100. The main shaft of the servo stepper motor 18 is connected to a lead screw 16. The second slider 12 uses a nut. When the second servo stepper motor 18 rotates, the lead screw 16 rotates synchronously. The second slider 12 (the nut) does not rotate, but can move left and right according to the forward and reverse rotation of the second servo stepper motor 18.

[0071] The first servo stepping motor 17 and the second servo stepping motor 18 are both existing devices.

[0072] The first servo stepper motor 17 and the second servo stepper motor 18 are electrically connected to the processor 51 respectively. The processor 51 controls the first servo stepper motor 17 and the second servo stepper motor 18 to rotate forward or reverse, thereby adjusting the pitch of each conductive micro coil 2.

[0073] Although the present invention has been particularly shown and described in conjunction with preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made to the present invention without departing from the spirit and scope of the invention as defined in the appended claims, and all such changes are within the scope of protection of the present invention.

Claims

1. A bacteria and bacterial dust detection device for detecting the bacterial concentration in an air environment, characterized by: It includes a plurality of conductive micro coils, a coil pitch adjustment device, a display terminal, and a controller; The coil pitch adjustment device includes a linear guide rail, a first slider disposed on the linear guide rail and movable left and right along the linear guide rail, a first insulating connector fixedly connected to the first slider, a second slider disposed on the linear guide rail and movable left and right along the linear guide rail, and a second insulating connector fixedly connected to the second slider; A positive electrode sheet is provided on the first insulating connector, and a first end of each of the conductive micro-coils is welded to the positive electrode sheet; A negative electrode sheet is provided on the second insulating connector, and the second end of each of the conductive micro-coils is welded to the negative electrode sheet; The positive electrode sheet and the negative electrode sheet are arranged parallel to each other; Adjusting the pitch of each of the conductive micro-coils by adjusting the distance between the first slider and the second slider; The controller includes a processor, a power supply, and an impedance tester; When bacteria and bacterial dust in the air environment are adsorbed on each of the conductive micro-coils, the total impedance value of each of the conductive micro-coils changes; The positive electrode sheet and the negative electrode sheet are respectively electrically connected to an impedance tester for detecting the total impedance value of each conductive micro-coil between the positive electrode sheet and the negative electrode sheet; The impedance tester is electrically connected to the processor and transmits the detected total impedance value of each of the conductive micro-coils to the processor; The processor pre-establishes a corresponding relationship between the total impedance value of each conductive micro-coil and the bacterial concentration value in the air environment; The processor can obtain the bacterial concentration value in the current air environment according to the total impedance value of each conductive coil; The power supply is electrically connected to the power supply terminal of the processor to supply power to the processor; The display terminal is electrically connected to the processor and is used to display the bacterial concentration value in the current air environment.

2. The bacteria and bacterial dust detection device according to claim 1, characterized in that: Before the pitch of the conductive micro-coil is adjusted by the coil pitch adjustment device, the diameter of the conductive micro-coil is 0.5 μm-15 μm, and the pitch of the conductive micro-coil is 0.05 μm-5 μm; The pitch of the conductive microcoil can be adjusted by stretching or compressing the pitch adjusting device.

3. A bacteria and bacterial dust detection device according to claim 1 or 2, characterized in that: Also included are sound and light alarms; The sound and light alarm is electrically connected to the processor.

4. The bacteria and bacterial dust detection device according to claim 3, characterized in that: The controller further includes a communication interface; The communication interface is communicatively connected to the processor.

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