Particle concentration monitoring method, device, equipment and storage medium

Abstract

The present application relates to a particle concentration monitoring method, device, equipment and storage medium, which includes obtaining a particle value once per second and storing the obtained particle value; recording the current time in seconds starting from the time when the particle value is first obtained; moving the current time forward to the first time, defining the time period from the first time to the current time as the first time period, and recording the sum of the particle values ​​stored in the first time period as the first value; moving the current time forward to the second time and the third time respectively, defining the time period from the third time to the second time as the second time period, and recording the sum of the particle values ​​stored in the second time period as the second value; calculating the concentration of the measured particle every second according to the first value and the second value updated in seconds. The present application has the effect of quickly obtaining the concentration of the measured particle.

Description

Technical Field

[0001] The present application relates to the technical field of particle concentration detection, and in particular to a particle concentration monitoring method, device, equipment and storage medium. Background Art

[0002] Monitoring of particulate dust is an important part of dust control.

[0003] The traditional method for monitoring particle concentration usually involves obtaining the number of radiation particles A within the preset time Q before sampling in a certain hour, and obtaining the number of radiation particles B within the preset time P after sampling in the same hour; wherein the number of radiation particles A is the number of radiation particles deposited on the particle sensor filter paper within the preset time Q before sampling; the number of radiation particles B is the number of radiation particles deposited on the particle sensor filter paper within the preset time P after sampling; Q = P. The concentration of particulate dust is calculated based on the number of radiation particles A and the number of radiation particles B. Therefore, it can be seen that the traditional method can only produce a concentration result in one hour, with a long waiting time and low sensitivity, and cannot detect changes in particle concentration in a short period of time. Summary of the invention

[0004] In order to quickly obtain the concentration of measured particulate matter, the present application provides a particulate matter concentration monitoring method, device, equipment and storage medium.

[0005] In the first aspect, the present application provides a method for monitoring particulate matter concentration, which adopts the following technical solution:

[0006] A method for monitoring particle concentration, comprising:

[0007] Obtain a particle value once per second and store the obtained particle value; wherein the particle value is the value of the number of radioactive particles deposited on the particle sensor filter paper within one second;

[0008] Starting from the time when the particle value is first obtained, the current time is recorded in seconds;

[0009] Moving the current time forward to a first time, defining a time period from the first time to the current time as a first time period, and recording a sum of particle values ​​stored in the first time period as a first value;

[0010] The current time is moved forward to a second time and a third time respectively, a time period from the third time to the second time is defined as a second time period, and a sum of the particle values ​​stored in the second time period is recorded as a second value;

[0011] Calculate the concentration of the measured particulate matter every second according to the first value and the second value updated every second;

[0012] The first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period.

[0013] By adopting the above technical solution, as the real time passes, the current time is updated once per second, and correspondingly, the first value and / or the second value is also updated once per second, so that the concentration of the measured particles can be obtained once per second. In this way, the time for obtaining the concentration of the measured particles is greatly reduced, the waiting time is short, the sensitivity is high, and the concentration changes of the measured particles in a short period of time can be detected.

[0014] Preferably, before the current time is moved forward to the second time and the third time respectively, the time period from the third time to the second time is defined as the second time period, and the sum of the particle values ​​stored in the second time period is recorded as the second value, the method further includes:

[0015] Determine whether the current time is equal to a first threshold value X;

[0016] If so, the current time is moved forward to the first time, the second time and the third time respectively.

[0017] Preferably, after the current time is equal to the first threshold value X, the method further includes:

[0018] Determine whether the current time is greater than the first threshold X and not greater than the second threshold Y;

[0019] If so, then every time the current time increases by one second, the second time also increases by one second, and the first time and the third time remain unchanged.

[0020] Preferably, after the current time is greater than the first threshold value X and not greater than the second threshold value Y, the method further includes:

[0021] Determine whether the current time is greater than the second threshold value Y and not greater than a third threshold value Z;

[0022] If so, then every time the current time increases by one second, the first time also increases by one second, and the second time and the third time remain unchanged.

[0023] Preferably, after the current time is greater than the second threshold value Y and not greater than the third threshold value Z, the method further includes:

[0024] Determine whether the current time is greater than the third threshold Z;

[0025] If so, every time the current time increases by one second, the first time, the second time and the third time all increase by one second.

[0026] Preferably, obtaining a particle value once per second and storing the obtained particle value comprises:

[0027] When the current time is not greater than the third threshold value Z, the obtained particle values ​​are sequentially stored in storage units of the storage space, the storage space is composed of N storage units, each storage unit can store a particle value, wherein Z=Ns;

[0028] When the current time is greater than the third threshold value Z, the acquired particle values ​​are stored cyclically starting from the first storage unit, and the original particle values ​​in the storage units are sequentially overwritten.

[0029] Preferably, the first time period and the second time period are not less than a preset time.

[0030] By adopting the above technical solution, the longer the time range of the first time period and the second time period is, the more particle values ​​are contained in the first time period and the second time period, and the concentration of the measured particulate matter calculated using the first value I1 and the second value I2 is more accurate.

[0031] In a second aspect, the present application provides a device for monitoring particle concentration, which adopts the following technical solution:

[0032] A particle concentration monitoring device, comprising:

[0033] An acquisition module, used to acquire a particle value once per second and store the acquired particle value; wherein the particle value is a value of the number of radioactive particles deposited on the particle sensor filter paper within one second;

[0034] A recording module, used to record the current time in seconds starting from the time when the particle value is first obtained;

[0035] A first definition module, used for moving the current time forward to a first time, defining a time period from the first time to the current time as a first time period, and recording a sum of particle values ​​stored in the first time period as a first value;

[0036] A second definition module is used to move the current time forward to a second time and a third time respectively, define the time period from the third time to the second time as a second time period, and record the sum of the particle values ​​stored in the second time period as a second value; and

[0037] A calculation module, calculating the concentration of the measured particulate matter once every second according to the first value and the second value updated every second;

[0038] The first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period.

[0039] In a third aspect, the present application provides a computer device, which adopts the following technical solution:

[0040] A computer device comprises a memory and a processor, wherein the memory stores a computer program that can be loaded by the processor and executes the particulate matter concentration monitoring method described in any one of the first aspects.

[0041] In a fourth aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0042] A computer-readable storage medium stores a computer program that can be loaded by a processor and execute the particulate matter concentration monitoring method described in any one of the first aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 It is a flow chart of the particulate matter concentration monitoring method provided in the embodiment of the present application.

[0044] Figure 2 This is a schematic diagram of the collection time period when the current time is 900s provided in an embodiment of the present application.

[0045] Figure 3 This is a schematic diagram of the storage space when the current time is 900s provided in an embodiment of the present application.

[0046] Figure 4 This is a schematic diagram of the collection time period when the current time is 1200s provided in an embodiment of the present application.

[0047] Figure 5 This is a schematic diagram of the storage space when the current time is 1200s provided in an embodiment of the present application.

[0048] Figure 6 This is a schematic diagram of the collection time period when the current time is 3600s provided in an embodiment of the present application.

[0049] Figure 7 This is a schematic diagram of the storage space when the current time is 3600s provided in an embodiment of the present application.

[0050] Figure 8 This is a schematic diagram of the collection time period when the current time is 3900s provided in an embodiment of the present application.

[0051] Fig. 9 This is a schematic diagram of the storage space when the current time is 3900s provided in an embodiment of the present application.

[0052] Fig.10 It is a structural block diagram of the particle concentration monitoring device provided in an embodiment of the present application.

[0053] Fig.11 It is a schematic diagram of the structure of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application.

[0055] This embodiment provides a method for monitoring particle concentration. Figure 1 As shown, the main process of the method is described as follows (steps S101 to S105):

[0056] Step S101: Obtain a particle value once per second and store the obtained particle value; wherein the particle value is the value of the number of radioactive particles deposited on the particle sensor filter paper within one second.

[0057] In this embodiment, the radioactive source releases radioactive particles, and the released radioactive particles are deposited on the filter paper of the particle sensor. The number of radioactive particles deposited on the filter paper within one second is obtained, and the number is recorded as the particle value, so as to calculate the concentration of the measured particles in the subsequent process. In this embodiment, C-14 (carbon-14) is used as the β-ray radiation source; glass fiber paper tape is used as the filter paper, and the particles are collected by a flow pump, and the flow rate is controlled to 16.67L / min. The collected particles are dusted and deposited on the filter paper.

[0058] The obtained particle value is stored in a storage unit of the storage space, wherein the storage space is composed of N storage units, and each storage unit can store a particle value.

[0059] Step S102: starting from the time when the particle value is first obtained, the current time is recorded in seconds.

[0060] The time of first obtaining the particle value is defined as the 0th second, and the current time is recorded in seconds starting from the 0th second. The first obtained particle value is the value of the number of radioactive particles deposited on the particle sensor filter paper from the 0th second to the 1st second.

[0061] When the current time is equal to 1 second, the first particle value is obtained, when the current time is equal to 2 seconds, the second particle value is obtained, and when the current time is equal to T seconds, the Tth particle value is obtained, where T is a positive number.

[0062] Step S103: Shift the current time forward to the first time, define the time period from the first time to the current time as the first time period, and record the sum of the particle values ​​stored in the first time period as the first value.

[0063] Step S104: Shift the current time forward to the second time and the third time respectively, define the time period from the third time to the second time as the second time period, and record the sum of the particle values ​​stored in the second time period as the second value.

[0064] Step S105: Calculate the concentration of the measured particulate matter every second based on the first value and the second value updated by seconds; wherein the first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period.

[0065] In this embodiment, the calculation formula for the measured particle concentration is:

[0066]

[0067] Wherein, C is the concentration of the measured particles, which can be the measured dust concentration; A is the area of ​​the dust deposition region on the filter paper, which is 1.13 cm in this embodiment. 2 ; u is the mass absorption coefficient, which is 0.29 cm in this embodiment 2 / mg; Q is the sampling flow rate, which is 16.67L / min in this embodiment; Δt is the time interval between the calculation of the first value and the second value.

[0068] like Figure 2 As shown, the current time is defined as T, the first time is defined as T1, the second time is defined as T2, and the third time is defined as T3; the first time period is defined as t A , the second time period is defined as t B ; The first numerical value is defined as I1, and the second numerical value is defined as I2.

[0069] When the current time T is equal to the first threshold value X, the current time T starts to be moved forward to the first time T1, the second time T2 and the third time T3 respectively.

[0070] For example, the initial value of the first time T1 is defined as the 600th second, the initial value of the second time T2 is defined as the 300th second, and the initial value of the third time T3 is defined as the 0th second. When the current time T is equal to the first threshold value X, if X = 900s, then the first time period t A is (600s, 900s], the second time period t B is (0s, 300s].

[0071] It is worth noting that the first time period t ADoes not include the first time T1, but includes the current time T, the second time period t B The third time T3 is not included, but the second time T2 is included.

[0072] like Figure 3 As shown, in this embodiment, the number of storage units N is set to 3600. When the current time T is 900s, the first value I1 is the sum of the particle values ​​stored in the storage units between the 601st and 900th (including the 601st and 900th storage units), and the second value I2 is the sum of the particle values ​​stored in the storage units between the 1st and 300th (including the 1st and 300th storage units).

[0073] It is worth noting that the first time period t A and the second time period t B In this embodiment, the preset time is set to 300s, so that the first time period t A and the second time period t B The time range is long enough, the first time period t A and the second time period t B The particle values ​​contained therein are sufficient, so that the concentration of the measured particulate matter calculated by the first value I1 and the second value I2 is more accurate.

[0074] When the current time T is greater than the first threshold X and not greater than the second threshold Y, every time the current time T increases by one second, the first time T1 and the third time T3 remain unchanged, and the second time T2 increases by one second.

[0075] like Figure 4 As shown, assuming that Y=1200s, when the current time T is 1200s, the first time T1 is still the 600th second, the second time T2 increases to the 600th second, and the third time T3 is still the 0th second. The first time period t A is (600s, 1200s], the second time period t B is (0s, 600s].

[0076] like Figure 5 As shown, when the current time T is 1200s, the first value I1 is the sum of the particle values ​​stored in the storage units between the 601st and 1200th (including the 601st and 1200th storage units), and the second value I2 is the sum of the particle values ​​stored in the storage units between the 1st and 600th (including the 1st and 600th storage units).

[0077] When the current time T is greater than the second threshold value Y and not greater than the third threshold value Z, every time the current time T increases by one second, the second time T2 and the third time T3 remain unchanged, and the first time T1 increases by one second.

[0078] like Figure 6 As shown, assuming that Z=3600s, when the current time T is 3600s, the first time T1 increases to the 3000th second, the second time T2 is the 600th second, the third time T3 is the 0th second, and the first time period t A is (3000s, 3600s], the second time period t B is (0s, 600s].

[0079] like Figure 7 As shown, when the current time T is 3600s, the first value I1 is the sum of the particle values ​​stored in the storage units between the 3001st and 3600th (including the 3001st and 3600th storage units), and the second value I2 is the sum of the particle values ​​stored in the storage units between the 1st and 600th (including the 1st and 600th storage units).

[0080] When the current time is greater than the third threshold Z, every time the current time T increases by one second, the first time T1 , the second time T2 , and the third time T3 all increase by one second.

[0081] like Figure 8 As shown, when the current time T is 3900s, the first time T1 is 3300s, the second time T2 is 900s, and the third time T3 is 300s. The first time period t A is (3300s, 3900s], the second time period t B is (300s, 900s].

[0082] In summary, when the current time T is not greater than the third threshold value Z, the obtained particle values ​​are stored in the storage units of the storage space in sequence. Since Z = Ns, when the current time T is equal to the third threshold value Z, the storage space is full. The particle values ​​obtained when the current time T is greater than the third threshold value Z are stored cyclically starting from the first storage unit, and the original particle values ​​in the storage units are overwritten in sequence.

[0083] like Fig. 9As shown, when the current time T is 3900s, the first value I1 is the sum of the particle values ​​stored in the storage units between the 3301st and 3600th and between the 1st and 300th (including the 3301st storage unit, the 3600th storage unit, the 1st storage unit and the 300th storage unit), and the second value I2 is the sum of the particle values ​​stored in the storage units between the 301st and 900th (including the 301st storage unit and the 900th storage unit).

[0084] For multiple particle values, the shorter the interval between their acquisition times, the higher the similarity of the particle values. Therefore, the first time period t A and the second time period t B The smaller the time difference between them, the time difference refers to the difference between T1 and T2.

[0085] In the process that the current time T changes from being equal to the second threshold value Y to being equal to the third threshold value Z, the first time period t A and the second time period t B The time difference between them gradually increases, making the first value I1 and the second value I2 obtained at this stage more representative, so that the concentration of the measured particles calculated by the first value I1 and the second value I2 is more accurate. It is worth noting that when the current time T is greater than the third threshold Z, the first time period t A and the second time period t B The time difference between them is not changing.

[0086] In order to better implement the above method, an embodiment of the present application also provides a particulate matter concentration monitoring device, which can be specifically integrated into a computer device, such as a terminal or server. The terminal can include but is not limited to mobile phones, tablet computers or desktop computers.

[0087] Fig.10 A structural block diagram of a particle concentration monitoring device provided in an embodiment of the present application, such as Fig.10 As shown, the device mainly includes:

[0088] The acquisition module 201 is used to acquire a particle value once per second and store the acquired particle value; wherein the particle value is the value of the number of radioactive particles deposited on the filter paper of the particle sensor within one second;

[0089] Recording module 202, used to record the current time in seconds starting from the time when the particle value is first obtained;

[0090] A first definition module 203 is used to move the current time forward to a first time, define a time period from the first time to the current time as a first time period, and record the sum of the particle values ​​stored in the first time period as a first value;

[0091] The second definition module 204 is used to move the current time forward to the second time and the third time respectively, define the time period from the third time to the second time as the second time period, and record the sum of the particle values ​​stored in the second time period as the second value; and

[0092] A calculation module 205, configured to calculate the concentration of the measured particulate matter once every second according to the first value and the second value updated every second;

[0093] Among them, the first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period.

[0094] The various variations and specific examples of the methods provided in the above embodiments are also applicable to the particulate matter concentration monitoring device of the present embodiment. Through the above detailed description of the particulate matter concentration monitoring method, those skilled in the art can clearly know the implementation method of the particulate matter concentration monitoring device in the present embodiment. For the sake of brevity of the specification, it will not be described in detail here.

[0095] In order to better execute the program of the above method, the embodiment of the present application also provides a computer device, such as Fig.11 As shown, the computer device 300 includes a memory 301 and a processor 302 .

[0096] Computer device 300 may be implemented in various forms, including devices such as mobile phones, tablet computers, PDAs, laptop computers, and desktop computers.

[0097] The memory 301 may be used to store instructions, programs, codes, code sets or instruction sets. The memory 301 may include a program storage area and a data storage area, wherein the program storage area may store instructions for implementing an operating system, instructions for at least one function (such as calculating the concentration of measured particulate matter according to a first value and a second value, etc.), and instructions for implementing the particulate matter concentration monitoring method provided in the above embodiment, etc.; the data storage area may store data involved in the particulate matter concentration monitoring method provided in the above embodiment, etc.

[0098] The processor 302 may include one or more processing cores. The processor 302 calls the data stored in the memory 301 by running or executing the instructions, programs, code sets or instruction sets stored in the memory 301, and performs various functions and processes data of the present application. The processor 302 may be at least one of an application-specific integrated circuit (ASIC), a digital signal processor (DSP), a digital signal processing device (DSPD), a programmable logic device (PLD), a field programmable gate array (FPGA), a central processing unit (CPU), a controller, a microcontroller and a microprocessor. It is understandable that for different devices, the electronic device used to implement the above-mentioned processor 302 function can also be other, and the embodiment of the present application is not specifically limited.

[0099] The present application embodiment provides a computer-readable storage medium, for example, including: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and other media that can store program codes. The computer-readable storage medium stores a computer program that can be loaded by a processor and execute the particle concentration monitoring method of the above embodiment.

[0100] The specific embodiments of the present application are merely explanations of the present application and are not limitations of the present application. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, as long as they are within the scope of the claims of the present application, they are protected by the patent law.

[0101] In addition, the term "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article, unless otherwise specified, generally means that the associated objects before and after are in an "or" relationship.

Claims

1. A method for monitoring particle concentration, characterized in that: include: Obtain a particle value once per second and store the obtained particle value; wherein the particle value is the value of the number of radioactive particles deposited on the particle sensor filter paper within one second; Starting from the time when the particle value is first obtained, the current time is recorded in seconds; Moving the current time forward to a first time, defining a time period from the first time to the current time as a first time period, and recording a sum of particle values ​​stored in the first time period as a first value; Determine whether the current time is equal to a first threshold value X; If yes, the current time is moved forward to the first time, the second time and the third time respectively, the time period from the third time to the second time is defined as the second time period, and the sum of the particle values ​​stored in the second time period is recorded as the second value, wherein the first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period; Determine whether the current time is greater than the first threshold X and not greater than the second threshold Y; If yes, then the second time will increase by one second each time the current time increases, and the first time and the third time remain unchanged; Determine whether the current time is greater than the second threshold value Y and not greater than a third threshold value Z; If yes, then every time the current time increases by one second, the first time also increases by one second, and the second time and the third time remain unchanged; Determine whether the current time is greater than the third threshold Z; If yes, then every time the current time increases by one second, the first time, the second time and the third time all increase by one second; The obtained particle values ​​are stored cyclically starting from the first storage unit, and the original particle values ​​in the storage units are sequentially overwritten; When the current time is not greater than the third threshold value Z, the obtained particle value is sequentially stored in the storage units of the storage space, the storage space is composed of N storage units, each storage unit can store a particle value, wherein Z=N; The current time is moved forward to a second time and a third time respectively, a time period from the third time to the second time is defined as a second time period, and a sum of the particle values ​​stored in the second time period is recorded as a second value; According to the first value and the second value updated every second, the concentration of the measured particles is calculated every second. The concentration calculation formula of the measured particles is: , where C is the concentration of the measured particles, A is the area of ​​dust deposition on the filter paper, u is the mass absorption coefficient, Q is the sampling flow rate, and A time interval between the first value and the second value is calculated.

2. The method according to claim 1, characterized in that The first time period and the second time period are not less than a preset time.

3. A particle concentration monitoring device, used to implement a particle concentration monitoring method according to claim 1, characterized in that: include: An acquisition module, used to acquire a particle value once per second and store the acquired particle value; wherein the particle value is a value of the number of radioactive particles deposited on the particle sensor filter paper within one second; A recording module, used to record the current time in seconds starting from the time when the particle value is first obtained; A first definition module, used for moving the current time forward to a first time, defining a time period from the first time to the current time as a first time period, and recording a sum of particle values ​​stored in the first time period as a first value; A second definition module is used to move the current time forward to a second time and a third time respectively, define the time period from the third time to the second time as a second time period, and record the sum of the particle values ​​stored in the second time period as a second value; and A calculation module, calculating the concentration of the measured particulate matter once every second according to the first value and the second value updated every second; The first time is not less than the second time, the second time is greater than the third time, and the first time period is equal to the second time period.

4. A computer device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program which can be loaded by the processor and executes the method according to any one of claims 1 to 2.

5. A computer-readable storage medium, characterized in that: A computer program is stored which can be loaded by a processor and execute the method as claimed in any one of claims 1 to 2.

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