A rapid testing system and method for chloride ion content in marine atmospheric environment

Abstract

The present invention discloses a rapid test system and method for chloride ion content in a marine atmosphere environment, including a chloride ion detection chamber, a laser emission module, a photodetector, a potential sensor, a potential measuring element and an MCU microprocessor; the chloride ion detection chamber has an air inlet and an air outlet for the circulation of the marine atmosphere inside; the laser emission module emits laser into the chloride ion detection chamber; the photodetector receives the laser passing through the chloride ion detection chamber, and outputs a signal of the content of total salt particles in the marine atmosphere to the MCU microprocessor; the potential sensor contacts the marine atmosphere coming out of the air outlet to generate a response, and is electrically connected to the potential measuring element, and the response potential of the potential sensor is measured by the potential measuring element, and transmitted to the MCU microprocessor. The circuit structure of the device of the present invention is simple, and it is easy to obtain output data, and it can quickly obtain multi-parameter data reflecting the chloride ion content in the marine atmosphere, and further realize the test of the chloride ion content in the marine atmosphere.

Description

Technical Field

[0001] The invention belongs to the technical field of atmospheric environment testing, and relates to a system and method for quickly testing chloride ion content in a marine atmospheric environment. Background Art

[0002] The marine atmosphere contains a large amount of chloride ions, which are highly corrosive to metal materials. Therefore, it is very important to test the chloride ion content in the marine atmosphere. The "gauze method" specified in GB / T19292.3 is currently a commonly used method for testing the chloride ion deposition rate in the atmospheric environment. For example, CN 110726596A discloses a method for collecting chloride ions in the atmospheric environment. This application collects chloride ions in the atmosphere in different directions by placing a collection gauze on a cylindrical frame with four hollow sides. Further analysis of the chloride ions on the gauze can obtain the deposition rate of chloride ions within a certain period. The existing "gauze method" tests the cumulative deposition rate of chloride ions within a certain period, and cannot provide real-time monitoring of the transient content of chloride ions in the marine atmosphere.

[0003] Therefore, it is a technical problem that needs to be solved urgently by those skilled in the art to provide a testing system and method with a simple structure that can quickly monitor the transient content of chloride ions in the marine atmospheric environment in real time. Summary of the invention

[0004] In view of the above research status and existing problems, the present invention provides a rapid testing system and method for chloride ion content in a marine atmospheric environment. The device circuit structure is simple, and it is easy to obtain output data, and can quickly obtain multi-parameter data reflecting the chloride ion content in the marine atmospheric environment.

[0005] To achieve the above purpose, the specific plan is as follows:

[0006] A rapid testing system for chloride ion content in a marine atmospheric environment, comprising a chloride ion detection chamber, a laser emission module, a photoelectric detector, a potential sensor, a potential measuring element and an MCU microprocessor;

[0007] The chloride ion detection chamber has an air inlet and an air outlet for the circulation of marine atmosphere inside;

[0008] The laser emitting module emits laser into the chloride ion detection chamber;

[0009] The photoelectric detector receives the laser light passing through the chloride ion detection chamber, and outputs a signal of the content of total salt particles in the marine atmosphere to the MCU microprocessor;

[0010] The potential sensor contacts the ocean atmosphere coming out of the air outlet to generate a response and is electrically connected to the potential measuring element. The response potential of the potential sensor is measured by the potential measuring element and transmitted to the MCU microprocessor.

[0011] Preferably, the photodetector is electrically connected to the MCU microprocessor via a filtering and amplifying circuit.

[0012] Preferably, the laser emission module is electrically connected to a laser control circuit, and the laser control circuit is also electrically connected to the MCU microprocessor.

[0013] Preferably, a humidity sensor is provided in the chloride ion detection chamber for obtaining the humidity value of the ocean atmosphere in the chloride ion detection chamber and transmitting it to the MCU microprocessor.

[0014] Preferably, a fan is provided at the air outlet, and the direction of ambient air circulation is from the air inlet to the air outlet.

[0015] Preferably, the MCU microprocessor is connected to a data output interface.

[0016] Preferably, the potential sensor only produces a potential response to chloride ions.

[0017] Preferably, the reference electrode of the potential sensor is a solid reference electrode, including but not limited to Ag / AgCl electrode, Cu / CuSO4 electrode or polymer electrode, etc.; the response electrode is a stable metal or alloy, including but not limited to Zn, Al or stainless steel, etc.

[0018] The present invention also provides a method for quickly testing the chloride ion content in a marine atmospheric environment, comprising the following steps:

[0019] S1. Under the action of the fan, the ocean atmosphere enters the chloride ion detection chamber;

[0020] S2, the laser emission module is started to emit laser into the chloride ion detection chamber; at the same time, the photoelectric detector is started, the photoelectric detector receives the laser passing through the chloride ion detection chamber, and detects the content of total salt particles C in the marine atmosphere. T ;

[0021] S3, the ocean atmosphere coming out of the chloride ion detection chamber passes through the potential sensor, the potential sensor responds to the chloride ions, and the potential E is measured by the potential measuring element x ;

[0022] S4, according to the content of total salt particles C T and potential E x Process and output the chloride ion concentration value.

[0023] Preferably, in S4,

[0024] The formula for calculating chloride ion concentration is:

[0025] C RH=a|E0 / E x |C T +b

[0026] Where: C RH is the actual chloride ion concentration under humidity RH; E x is the test potential of the potential sensor under humidity RH; E0 is the monitoring potential of the potential sensor in a clean atmosphere; C T is the total salt particle content detected in the marine atmosphere; a and b are coefficients.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] The present invention obtains multi-parameter values ​​that can characterize the chloride ion content in the marine atmosphere by irradiating the marine atmosphere with laser. The system has a simple structure and intuitive output of electrical data, which is convenient for the operator to perform subsequent processing on the chloride ion detection, and further realizes real-time monitoring of the transient content of chloride ions in the marine atmosphere. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work.

[0030] Figure 1 It is a structural block diagram of the rapid testing system for chloride ion content in marine atmospheric environment of the present invention;

[0031] Figure 2 It is a schematic diagram of fitting of the chloride ion concentration calculation coefficient of the present invention;

[0032] Figure 3 It is a schematic diagram of the structure of the potential sensor of the present invention. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] See the instruction manual Figure 1The structural block diagram of the rapid test system for chloride ion content in marine atmospheric environment shown in the figure includes a chloride ion detection chamber 3, a laser emission module 2, a photoelectric detector 11, a potential sensor 4, a potential measuring element 9 and an MCU microprocessor 8; the chloride ion detection chamber 3 has an air inlet and an air outlet for the circulation of marine atmosphere inside; the laser emission module 2 emits laser into the chloride ion detection chamber 3; a photoelectric detector 11 is installed outside the chloride ion detection chamber 3, and the photoelectric detector 11 receives the projected laser through a window on the side wall of the chloride ion detection chamber 3, and is electrically connected to the MCU microprocessor 8 through a filter amplifier circuit 12, and the filter amplifier circuit 12 is electrically connected to the MCU microprocessor 8. The circuit 12 filters out the invalid electrical signals received from the photodetector 11 and amplifies the valid signals. A general filtering and amplifying circuit can be selected to output the signal of the total salt particle content in the marine atmosphere to the MCU microprocessor 8; the potential sensor 4 contacts the marine atmosphere coming out of the air outlet to generate a response, and is electrically connected to the potential measuring element 9. The response potential of the potential sensor 4 is measured by the potential measuring element 9 and transmitted to the MCU microprocessor 8. The potential measuring element can be a potentiometer. The MCU microprocessor is connected to a data output interface 7, which is transmitted to the network or PC through the data output interface 7 for further processing.

[0035] The laser emitting module 2 is electrically connected to a laser control circuit 1, and the laser control circuit 1 is also electrically connected to an MCU microprocessor 8. The laser control circuit 1 is used to control the laser emitting module 2 to emit laser light.

[0036] A humidity sensor 10 may be provided in the chloride ion detection chamber 3 to obtain the humidity value of the marine atmosphere in the chloride ion detection chamber 3 and transmit it to the MCU microprocessor 8, which is helpful for subsequent data analysis and comparison.

[0037] A fan 5 is provided at the air outlet of the chloride ion detection chamber 3, and the ambient air flows in the direction from the air inlet to the air outlet. The fan 5 is connected to the MUC microprocessor 8 through a fan control circuit 6, which is used to control the speed and start and stop of the fan 5.

[0038] See the instruction manual Figure 3, which is a schematic diagram of the potential sensor structure provided in this embodiment. The potential sensor includes a filamentary reference electrode 41 and a sheet-like response electrode 42, which are alternately arranged at intervals and then sealed in a PVC sleeve 44 with an epoxy resin 43; all filamentary reference electrodes 41 are connected in parallel, and all sheet-like response electrodes 42 are connected in parallel. When the potential sensor contacts a marine atmosphere with a certain humidity, a water molecule film will be formed on the surface of the potential sensor, and a potential difference will be generated between the reference electrode and the response electrode, and the potential difference is related to the humidity of the marine atmosphere and the chloride ion content in the marine atmosphere. The potential sensor 4 only generates a potential response to chloride ions. The reference electrode of the potential sensor 4 is a solid reference electrode, including an Ag / AgCl electrode, a Cu / CuSO4 electrode or a high molecular polymer electrode; the response electrode is a stable metal or alloy, including Zn, Al or stainless steel.

[0039] The parallel reference electrode output leads and the parallel response electrode output leads are connected to the potential measuring element 9 as positive and negative signal lines. The potential measuring element 9 measures the output potential difference of the potential sensor 4. The potential measuring element 9 outputs a digital signal to the MCU microprocessor 8.

[0040] The test method of the rapid test system for chloride ion content in marine atmospheric environment provided in this embodiment comprises the following steps:

[0041] S1, under the action of the fan, the ocean atmosphere enters the chloride ion detection chamber 3;

[0042] S2, the laser emission module 2 is started to emit laser into the chloride ion detection chamber 3; at the same time, the photoelectric detector is started, the photoelectric detector receives the laser passing through the chloride ion detection chamber 3, and detects the content of total salt particles C in the marine atmosphere. T and transmit the detection result to the MCU microprocessor 8;

[0043] S3, the ocean atmosphere coming out of the chloride ion detection chamber 3 passes through the potential sensor 4, the potential sensor 4 responds to the chloride ions, and the potential E is measured by the potential measuring element x ;

[0044] S4, according to the content of total salt particles C T and potential E x Process and output the chloride ion concentration value.

[0045] The formula for calculating chloride ion concentration is:

[0046] C RH =a|E0 / E x |C T +b

[0047] Where: C RHis the actual chloride ion concentration under humidity RH; E x is the test potential of the potential sensor under humidity RH; E0 is the monitoring potential of the potential sensor in a clean atmosphere, and its value is related to the potential sensor model and can be obtained by testing in the laboratory; C T is the total salt particle content in the detected marine atmosphere; a and b are coefficients, whose values ​​are related to the potentiometric sensor model and can be obtained by calculation using standard environment.

[0048] The MCU microprocessor 8 automatically calculates the actual chloride ion concentration according to the above formula, and then transmits it to the network or PC through the data output interface for further processing.

[0049] See attached Figure 2 , different concentrations of C were prepared in the laboratory RH Chloride ion atmosphere; test the monitoring potential E0 of the potential sensor in a clean atmosphere and the monitoring potential E0 in a chloride ion atmosphere x 、Total salt particle content in the marine atmosphere C T ; C RH is the vertical axis, |E0 / E x |C T A linear fit is performed on the horizontal axis, and a=1.15, b=-421.9 are obtained, which has a good fit.

[0050] The above is a detailed introduction to a system and method for rapid testing chloride ion content in a marine atmospheric environment provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scopes. In summary, the content of this specification should not be understood as limiting the present invention.

[0051] In this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprise", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

Claims

1. A rapid testing system for chloride ion content in marine atmospheric environment, characterized in that: It comprises a chloride ion detection chamber (3), a laser emission module (2), a photoelectric detector (11), a potential sensor (4), a potential measuring element (9) and an MCU microprocessor (8); The chloride ion detection chamber (3) has an air inlet and an air outlet for the ocean atmosphere to circulate inside; The laser emitting module (2) emits laser light into the chloride ion detection chamber (3); The photoelectric detector (11) receives the laser light passing through the chloride ion detection chamber (3) and outputs a signal C of the content of total salt particles in the marine atmosphere. T To the MCU microprocessor (8); The potential sensor (4) contacts the ocean atmosphere coming out of the air outlet, a fan is provided at the air outlet, and the ambient atmosphere flows in a direction from the air inlet to the air outlet. The potential sensor (4) only generates a potential response to chloride ions and is electrically connected to the potential measuring element (9). The response potential E of the potential sensor (4) is measured by the potential measuring element (9). x , transmitted to the MCU microprocessor (8); the rapid testing system for chloride ion content in the marine atmospheric environment is used to perform the following steps: S1. Under the action of a fan, the marine atmosphere enters the chloride ion detection chamber (3). A humidity sensor (10) is provided in the chloride ion detection chamber (3) for obtaining the humidity value of the marine atmosphere in the chloride ion detection chamber (3) and transmitting the humidity value to the MCU microprocessor (8); S2, the laser emission module (2) is started to emit laser light into the chloride ion detection chamber (3); at the same time, the photoelectric detector is started to receive the laser light passing through the chloride ion detection chamber (3) and detect the content C of total salt particles in the marine atmosphere. T ; S3, the ocean atmosphere coming out of the chloride ion detection chamber (3) passes through the potential sensor (4), the potential sensor (4) generates a potential response to the chloride ions, and the potential E is measured by the potential measuring element x ; S4, according to the content of total salt particles C T and potential E x Process and output chloride ion concentration value; The formula for calculating chloride ion concentration is: C RH =a|E0 / E x |C T +b Where: C RH is the actual chloride ion concentration under humidity RH; E x is the test potential of the potential sensor under humidity RH; E0 is the monitoring potential of the potential sensor in a clean atmosphere; C T is the total salt particle content detected in the marine atmosphere; a and b are coefficients.

2. A rapid testing system for chloride ion content in marine atmosphere environment according to claim 1, characterized in that: The photodetector (11) is electrically connected to the MCU microprocessor (8) via a filter amplifier circuit (12).

3. A rapid testing system for chloride ion content in marine atmospheric environment according to claim 1, characterized in that: The laser emission module (2) is electrically connected to a laser control circuit (1), and the laser control circuit (1) is also electrically connected to the MCU microprocessor (8).

4. A rapid testing system for chloride ion content in marine atmosphere environment according to claim 1, characterized in that: The MCU microprocessor is connected with a data output interface.

5. A rapid testing system for chloride ion content in marine atmosphere environment according to claim 1, characterized in that: The reference electrode of the potential sensor (4) is a solid-state reference electrode, including an Ag / AgCl electrode, a Cu / CuSO4 electrode or a high molecular polymer electrode; the response electrode is a stable metal or alloy.

6. A rapid testing system for chloride ion content in marine atmosphere environment according to claim 1, characterized in that: The reference electrode of the potential sensor (4) is a solid-state reference electrode, and the response electrode comprises Zn, Al or stainless steel.

7. A method for testing a rapid test system for chloride ion content in a marine atmosphere according to any one of claims 1 to 6, characterized in that: The steps include: S1. Under the action of the fan, the ocean atmosphere enters the chloride ion detection chamber (3); S2, the laser emission module (2) is started to emit laser light into the chloride ion detection chamber (3); at the same time, the photoelectric detector is started to receive the laser light passing through the chloride ion detection chamber (3) and detect the content C of total salt particles in the marine atmosphere. T ; S3, the ocean atmosphere coming out of the chloride ion detection chamber (3) passes through the potential sensor (4), the potential sensor (4) generates a potential response to the chloride ions, and the potential E is measured by the potential measuring element x ; S4, according to the content of total salt particles C T and potential E x Process and output the chloride ion concentration value.

8. The testing method according to claim 7, characterized in that: In S4, The formula for calculating chloride ion concentration is: C RH =a|E0 / E x |C T +b Where: C RH is the actual chloride ion concentration under humidity RH; E x is the test potential of the potential sensor under humidity RH; E0 is the monitoring potential of the potential sensor in a clean atmosphere; C T is the total salt particle content detected in the marine atmosphere; a and b are coefficients.

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