Processing methods, devices, and electronic equipment for particulate matter sensors

Abstract

This invention provides a method, apparatus, and electronic device for processing particulate matter sensors, applied to a particulate matter sensor processing system. The system includes a detection pipeline and a zeroing pipeline. The method includes: switching the optical path of the particulate matter sensor via a roller; using a diaphragm pump to pass detection gas discharged from an exhaust pipe through the detection pipeline, performing a detection operation based on the switched optical path of the particulate matter sensor; and using the diaphragm pump to pass outdoor air through the zeroing pipeline, performing a zeroing operation based on the switched optical path of the particulate matter sensor. This improves the fault tolerance of the particulate matter sensor after a single failure, extends its service life, and reduces its maintenance costs.

Description

Technical Field

[0001] This invention relates to the field of sensor technology, and in particular to a processing method, apparatus, and electronic device for a particulate matter sensor. Background Technology

[0002] A particulate matter sensor is a device that uses the principle of light scattering to detect particulate matter in air. Particulate matter sensors are generally exposed to the polluted gas being measured. In this case, particulate matter will usually remain on the surface of the laser tube and receiver of the particulate matter sensor. Excessive particulate matter will reduce the detection accuracy of the particulate matter sensor and affect its service life. Especially in the detection of emissions from catering fumes, aerosols and other particulate matter are more likely to adhere to the surface of the laser tube and receiver, thereby increasing the maintenance cost of the particulate matter sensor and reducing its lifespan.

[0003] Therefore, existing particulate matter sensors suffer from problems such as susceptibility to particulate matter contamination, high maintenance costs, and short service life. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a method, apparatus and electronic device for processing particulate matter sensors, so as to reduce the maintenance cost of particulate matter sensors and increase the life of particulate matter sensors.

[0005] In a first aspect, embodiments of the present invention provide a method for processing a particulate matter sensor, applied to a particulate matter sensor processing system. The particulate matter sensor processing system includes: a detection pipeline and a zeroing pipeline. The detection pipeline includes: a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, and a detection air valve connected in sequence, the detection air valve being connected to an external exhaust duct. The zeroing pipeline includes: a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, a second high-efficiency filter, and a zeroing air valve connected in sequence, the zeroing air valve being connected to outdoor air. The method includes: switching the optical path of the particulate matter sensor using a roller set on the particulate matter sensor; passing the detection gas discharged from the exhaust duct through the detection pipeline based on the diaphragm air pump, and performing a detection operation based on the switched optical path of the particulate matter sensor; and passing outdoor air through the zeroing pipeline based on the diaphragm air pump, and performing a zeroing operation based on the switched optical path of the particulate matter sensor.

[0006] In an optional embodiment of this application, the particulate sensor includes: a through tube, a spool, a laser tube, and a receiver; the spool is disposed on the surface of the laser tube and the receiver, and the laser tube and the receiver form an optical path through a through hole.

[0007] In an optional embodiment of this application, the above method further includes: cleaning the particles in the laser tube and receiver using a reel set by the particulate sensor after the detection operation or zeroing operation is completed.

[0008] In an optional embodiment of this application, the aforementioned roll is a flexible cotton roll.

[0009] In optional embodiments of this application, the particulate sensor includes: a first laser tube, a second laser tube, a first receiver, and a second receiver; the method further includes: when the particulate concentration determined based on the optical path of the first laser tube and the first receiver drifts, cleaning the particulate matter in the first laser tube and the first receiver using a roller disposed on the surface of the first laser tube and the first receiver, and exposing the through holes disposed on the second laser tube and the second receiver; or; when the particulate concentration determined based on the optical path of the second laser tube and the second receiver drifts, cleaning the particulate matter in the second laser tube and the second receiver using a roller disposed on the surface of the second laser tube and the second receiver, and exposing the through holes disposed on the first laser tube and the first receiver.

[0010] In an optional embodiment of this application, the particulate sensor includes a laser tube and a receiver, wherein the laser tube and the receiver are arranged vertically.

[0011] In an optional embodiment of this application, the above-mentioned zeroing operation includes: determining the current zeroing value of the target laser tube and the target receiver; wherein the target laser tube and the target receiver are respectively: a first laser tube and a first receiver, or a second laser tube and a second receiver; if the target laser tube and the target receiver are being zeroed for the first time, the current zeroing value is used as the initial zeroing value of the target laser tube and the target receiver; and switching the target laser tube and the target receiver.

[0012] In an optional embodiment of this application, the above-mentioned zeroing operation further includes: if the target laser tube and the target receiver are not zeroed for the first time, determining the absolute value of the difference between the current zeroing value and the initial zeroing value of the target laser tube and the target receiver; if the absolute value is greater than a preset drift threshold, cleaning the contaminants in the target laser tube and the target receiver using a scroll provided on the surface of the target laser tube and the target receiver; switching the target laser tube and the target receiver; if the absolute value is less than or equal to the drift threshold, ending the detection operation.

[0013] In optional embodiments of this application, the above detection operation includes: determining the detection values ​​of the target laser tube and the target receiver; and determining the concentration values ​​of the target laser tube and the target receiver based on the detection values ​​of the target laser tube and the target receiver, the initial zeroing value, and the current zeroing value.

[0014] In an optional embodiment of this application, the concentration values ​​of the target laser tube and the target receiver are determined based on the detection values, the initial zeroing value, and the current zeroing value using the following formula: ρ = ρ 测 +(ρ 0x -ρ 出x ); where ρ is the concentration value of the target laser tube and the target receiver, ρ测 ρ represents the detection values ​​of the target laser tube and the target receiver. 0x ρ is the current zeroing value for the target laser tube and the target receiver. 出x This is the initial zeroing value for the target laser tube and the target receiver.

[0015] In an optional embodiment of this application, the above method further includes: determining the number of cycles of the optical path of the laser tube and the receiver; if the number of cycles is greater than a preset number of cycles threshold, performing a zeroing operation.

[0016] Secondly, embodiments of the present invention also provide a particulate matter sensor processing device, applied to a particulate matter sensor processing system. The particulate matter sensor processing system includes: a detection pipeline and a zeroing pipeline. The detection pipeline includes: a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, and a detection air valve connected in sequence, with the detection air valve connected to an external exhaust duct. The zeroing pipeline includes: a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, a second high-efficiency filter, and a zeroing air valve connected in sequence, with the zeroing air valve connected to outdoor air. The device includes: an optical path switching module, used to switch the optical path of the particulate matter sensor via a roller set on the particulate matter sensor; a detection operation execution module, used to perform a detection operation based on the switched optical path of the particulate matter sensor by passing the detection gas discharged from the exhaust duct through the detection pipeline using the diaphragm air pump; and a zeroing operation execution module, used to perform a zeroing operation based on the switched optical path of the particulate matter sensor by passing outdoor air through the zeroing pipeline using the diaphragm air pump.

[0017] Thirdly, embodiments of the present invention also provide an electronic device, including a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the above-described particulate matter sensor processing method.

[0018] Fourthly, embodiments of the present invention also provide a computer-readable storage medium storing computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the above-described particulate matter sensor processing method.

[0019] The embodiments of the present invention bring the following beneficial effects:

[0020] This invention provides a processing method, apparatus, and electronic device for a particulate matter sensor. The device allows switching the optical path of the particulate matter sensor via a roller mechanism. A diaphragm air pump drives the detection gas discharged from the exhaust duct through the detection pipeline, and a detection operation is performed based on the switched optical path of the particulate matter sensor. The diaphragm air pump also drives outdoor air through a zeroing pipeline, and a zeroing operation is performed based on the switched optical path of the particulate matter sensor. This improves the fault tolerance of the particulate matter sensor after a single failure, extends its service life, and reduces its maintenance costs.

[0021] Other features and advantages of this disclosure will be set forth in the following description, or some features and advantages may be inferred from the description or determined without doubt, or may be learned by practicing the techniques described above.

[0022] To make the above-mentioned objects, features and advantages of this disclosure more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of a particulate matter sensor processing system provided in an embodiment of the present invention;

[0025] Figure 2 A flowchart illustrating a particulate matter sensor processing method provided in an embodiment of the present invention;

[0026] Figure 3 A flowchart of another particulate matter sensor processing method provided in an embodiment of the present invention;

[0027] Figure 4 A schematic diagram of a particulate matter sensor provided in an embodiment of the present invention;

[0028] Figure 5 This is a schematic diagram illustrating the zeroing and detection operations of a particulate matter sensor according to an embodiment of the present invention.

[0029] Figure 6 A schematic diagram of another particulate sensor provided in an embodiment of the present invention;

[0030] Figure 7A schematic diagram of the processing device for a particulate matter sensor provided in an embodiment of the present invention;

[0031] Figure 8 This is a schematic diagram of the structure of an electronic device provided in an embodiment of the present invention.

[0032] Icons: 1-Laser tube; 2-Receiver; 3-Through tube; 4-Roller; 5-Drive shaft; 6-Flexible cotton; 7-Through hole; 71-Optical path switching module; 72-Detection operation execution module; 73-Zeroing operation execution module; 100-Memory; 101-Processor; 102-Bus; 103-Communication interface. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0034] Currently, particulate matter sensors are devices that use the principle of light scattering to detect particulate matter in air. Particulate matter sensors are generally exposed to the polluted gas being measured. In particular, particulate matter will generally remain on the surface of the laser tube and receiver of the particulate matter sensor. Excessive particulate matter will lead to a decrease in the detection accuracy of the particulate matter sensor and affect its service life. Especially in the detection of restaurant fumes, aerosols and other particulate matter are more likely to adhere to the surface of the laser tube and receiver, thereby increasing the maintenance cost of the particulate matter sensor and reducing its lifespan.

[0035] Therefore, existing particulate matter sensors suffer from susceptibility to particulate matter contamination, high maintenance costs, and short service life. Based on this, embodiments of the present invention provide a method, apparatus, and electronic device for processing particulate matter sensors.

[0036] To facilitate understanding of this embodiment, a processing method for a particulate matter sensor disclosed in this embodiment will be described in detail first. Specifically, a self-cleaning particulate matter sensor and a concentration calculation method for the self-cleaning particulate matter sensor are provided, which can improve the fault tolerance of the particulate matter sensor after a single failure, extend the service life of the particulate matter sensor, and reduce the later maintenance cost of the particulate matter sensor.

[0037] Example 1:

[0038] This invention provides a processing method for a particulate matter sensor, applicable to a particulate matter sensor processing system. See [link to relevant documentation]. Figure 1The diagram shows a processing system for a particulate matter sensor. The system includes a detection pipeline and a zeroing pipeline. The detection pipeline includes a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, and a detection air valve connected in sequence. The detection air valve is connected to an external smoke exhaust duct. The zeroing pipeline includes a diaphragm air pump, a first high-efficiency filter, a particulate matter sensor, a second high-efficiency filter, and a zeroing air valve connected in sequence. The zeroing air valve is connected to outdoor air.

[0039] Based on the above description, see Figure 2 The flowchart shown illustrates a particulate matter sensor processing method, which includes the following steps:

[0040] Step S202: Switch the optical path of the particulate sensor by using the roller set by the particulate sensor.

[0041] Existing particulate matter sensors suffer from susceptibility to particulate matter contamination, high maintenance costs, and short lifespans. If a particulate matter sensor has only one optical path, contamination of that path will affect its operation. Therefore, this embodiment allows for multiple optical path connections, which are switched via a roller mounted on the particulate matter sensor.

[0042] In this embodiment, a flexible cotton roll, similar to a film roll, can be installed on the surface of the laser tube and receiver of the particulate sensor. The flexible cotton roll is used to clean contaminants from the surfaces of the two transceiver devices. The operation of the roll switches the optical path of the particulate sensor, enabling the two optical paths to work alternately. This improves the fault tolerance of the particulate sensor after a single failure, extends the service life of the particulate sensor, and reduces the later maintenance cost of the particulate sensor.

[0043] Step S204: The detection gas discharged from the exhaust pipe is driven through the detection pipeline by the diaphragm air pump, and the detection operation is performed based on the optical path of the switched particulate matter sensor.

[0044] like Figure 1 As shown, in this embodiment, the detection operation can be performed using a particulate matter sensor. During the detection operation, the detection gas can be propelled along the pipeline sequentially through the detection air valve, the optical path of the switched particulate matter sensor, the first high-efficiency filter, and the diaphragm pump via a diaphragm air pump.

[0045] Step S206: Based on the diaphragm air pump, outdoor air is passed through the zeroing pipeline, and the zeroing operation is performed based on the optical path of the switched particulate matter sensor.

[0046] like Figure 1As shown, in this embodiment, a zeroing operation can also be performed using a particulate matter sensor. During the zeroing operation, outdoor air can be sequentially passed through a zeroing valve, a second high-efficiency filter, the optical path of the switched particulate matter sensor, the first high-efficiency filter, and the diaphragm pump via a diaphragm pump.

[0047] This invention provides a method for processing particulate matter sensors. The method involves switching the optical path of the particulate matter sensor via a roller mechanism; using a diaphragm pump to pass detection gas from an exhaust duct through a detection pipeline, and performing a detection operation based on the switched optical path of the particulate matter sensor; and using the diaphragm pump to pass outdoor air through a zeroing pipeline, and performing a zeroing operation based on the switched optical path of the particulate matter sensor. This method improves the fault tolerance of the particulate matter sensor after a single failure, extends its service life, and reduces its maintenance costs.

[0048] Example 2:

[0049] This embodiment provides another processing method for particulate matter sensors, which is implemented based on the above embodiment, such as... Figure 3 The flowchart illustrates another particulate matter sensor processing method. The particulate matter sensor processing method in this embodiment includes the following steps:

[0050] Step S302: Switch the optical path of the particulate sensor by using the roller set by the particulate sensor.

[0051] Step S304: The detection gas discharged from the exhaust pipe is passed through the detection pipeline by the diaphragm air pump, and the detection operation is performed based on the optical path of the switched particulate matter sensor.

[0052] Step S306: Based on the diaphragm air pump, outdoor air is passed through the zeroing pipeline, and the zeroing operation is performed based on the optical path of the switched particulate matter sensor.

[0053] Step S308: After the detection operation or zeroing operation is completed, the particulate matter in the laser tube and receiver is cleaned by the roller set by the particulate matter sensor.

[0054] Specifically, the particulate sensor in this embodiment includes: a through tube, a spool, a laser tube, and a receiver; the spool is disposed on the surface of the laser tube and the receiver, and the laser tube and the receiver form an optical path through the through hole.

[0055] In this embodiment, a roll (which can be a flexible cotton roll) can be set on the surface of the laser tube and receiver of the particulate sensor, similar to a film roll. The flexible cotton roll is used to clean the contaminants on the surface of the two transceivers. The operation of the roll switches the optical path of the particulate sensor, so as to realize the alternating operation of the two optical paths.

[0056] First, taking a particulate matter sensor consisting of two sets of laser tubes and a receiver as an example, please refer to... Figure 4 The diagram shows a particulate matter sensor, which includes: laser tubes 1 (referred to as the first laser tube and the second laser tube, respectively) and receivers 2 (referred to as the first receiver and the second receiver, respectively). Furthermore, the particulate matter sensor also includes: a through tube 3, a reel 4, and a drive shaft 5. In this embodiment, the reel 4 can be a flexible cotton 6 reel, positioned in the optical path between the two sets of laser tubes 1 and receivers 2, and has through holes 7.

[0057] Specifically, in this embodiment, the particles in the laser tube and receiver can be cleaned by the following steps: when the particle concentration determined based on the optical path of the first laser tube and the first receiver drifts, the particles in the first laser tube and the first receiver are cleaned by a roller provided on the surface of the first laser tube and the first receiver, and the through holes provided in the second laser tube and the second receiver are exposed; or; when the particle concentration determined based on the optical path of the second laser tube and the second receiver drifts, the particles in the second laser tube and the second receiver are cleaned by a roller provided on the surface of the second laser tube and the second receiver, and the through holes provided in the first laser tube and the first receiver are exposed.

[0058] like Figure 4 As shown, when the particulate sensor is working, it can acquire the particulate concentration in the optical path of the first laser tube and the first receiver. The second laser tube and the second receiver are covered with flexible cotton. After the value of the particulate concentration in the optical path of the first laser tube and the first receiver drifts (too high or too low), the roller is activated, and the first laser tube and the first receiver are covered by the rolled-out flexible cotton (the flexible cotton simultaneously wipes away surface dirt), exposing the through holes of the second laser tube and the second receiver. Afterwards, the optical path of the second laser tube and the second receiver can be used for detection or zeroing operations to acquire the particulate concentration in the optical path of the second laser tube and the second receiver; this process is repeated, switching back and forth.

[0059] Specifically, the zeroing operation in this embodiment may include: determining the current zeroing value of the target laser tube and the target receiver; wherein the target laser tube and the target receiver are respectively: a first laser tube and a first receiver, or a second laser tube and a second receiver; if the target laser tube and the target receiver are being zeroed for the first time, the current zeroing value is used as the initial zeroing value of the target laser tube and the target receiver; and switching the target laser tube and the target receiver.

[0060] Based on the operating characteristics of the particulate sensor provided in this embodiment, the particle concentration in the testing pathway can be more stably measured, reducing numerical errors caused by sensor contamination. (See also...) Figure 5The diagram shows a zeroing and detection operation of a particulate matter sensor.

[0061] like Figure 5 As shown, after the particulate sensor is powered on, x = 1 and I = 0 are set, where x represents the x-th group of laser tubes and receivers (i.e., the target laser tube and the target receiver), and I is the number of exchanges between the two groups of laser tubes and receivers.

[0062] Determine if n = 0, where n = 0 indicates the particulate sensor is undergoing its first zeroing, and n = 1 indicates it is not undergoing its first zeroing. Each particulate sensor undergoes its first zeroing at the factory. After the first zeroing, n = 1. After replacing the particulate sensor, n can be set to 0, and the first zeroing can be performed again.

[0063] If n = 0, then determine the current zero-calibration value ρ. 0x As the first zero-calibration value ρ 出x Then start the scroll to wipe the xth group of laser tubes and receivers. At this time, the other group of laser tubes and receivers will be exposed, that is, switch the target laser tube and target receiver.

[0064] Then, the initial zeroing of another set of laser tubes and receivers can be performed. For example... Figure 5 As shown, it can be determined whether x = 2. If it is, x = 1; otherwise, x = 2. The zero-calibration value ρ of the x-th group (i.e., another group of standard laser tubes and laser tubes) can be obtained. 0x Check if n = 0. If n = 0, mark the other set of laser tubes and the current zeroing value ρ of the laser tubes. 0x As the first zero-calibration value ρ 出x And mark n as 1, indicating that the factory zeroing values ​​of the two sets of laser tubes and the laser tubes have been set.

[0065] In addition, the zeroing operation in this embodiment may also include: if the target laser tube and the target receiver are not zeroing for the first time, determining the absolute value of the difference between the current zeroing value and the initial zeroing value of the target laser tube and the target receiver; if the absolute value is greater than a preset drift threshold, cleaning the particulate matter in the target laser tube and the target receiver using a scroll provided on the surface of the target laser tube and the target receiver; switching the target laser tube and the target receiver; if the absolute value is less than or equal to the drift threshold, ending the detection operation.

[0066] like Figure 5 As shown, if n=1 (i.e. the target laser tube and the target receiver are not zeroed for the first time), the number of exchanges is incremented by 1; it is then determined whether I>L, where L represents the cumulative life cycle of the particulate matter sensor. I>L indicates that the particulate matter sensor is faulty and needs to be replaced with a new particulate matter sensor. If I≤L, it indicates that the particulate matter sensor has not reached its life cycle, and the process returns to the step of determining whether n=0.

[0067] like Figure 5 As shown, if n=1, we can determine whether |ρ 0x -ρ 出x |>ρ 飘 , where ρ 0x ρ is the current zero-calibration value. 出x For the initial zeroing value, ρ 飘 The set limit for zero-point drift (i.e., drift threshold).

[0068] If the absolute value is greater than the preset drift threshold, the contaminants in the target laser tube and target receiver are cleaned, and the two sets of laser tubes and receivers are swapped. For example: the contaminants in the target laser tube and target receiver are cleaned using a scroll set on the surface of the target laser tube and target receiver; the target laser tube and target receiver are switched. If the absolute value is less than or equal to the drift threshold, the zeroing air valve is closed, the detection air valve is opened, and the detection cycle count m is set to 0.

[0069] Specifically, the detection operation in this embodiment may include: determining the detection values ​​of the target laser tube and the target receiver; and determining the concentration values ​​of the target laser tube and the target receiver based on the detection values ​​of the target laser tube and the target receiver, the initial zeroing value, and the current zeroing value.

[0070] like Figure 5 As shown, the concentration values ​​of the target laser tube and the target receiver can be determined using the following formula based on the detection values ​​of the target laser tube and the target receiver, the initial zeroing value, and the current zeroing value: ρ = ρ 测 +(ρ 0x -ρ 出x ); where ρ is the concentration value of the target laser tube and the target receiver, ρ 测 ρ represents the detection values ​​of the target laser tube and the target receiver. 0x ρ is the current zeroing value for the target laser tube and the target receiver. 出x This is the initial zeroing value for the target laser tube and the target receiver.

[0071] For example, the detection value ρ of the target laser tube can be obtained. 测 Calculate the concentration values ​​ρ = ρ_target laser tube and target receiver. 测 +(ρ 0x -ρ 出x Subsequently, this embodiment can determine the number of cycles in the optical path of the laser tube and the receiver; if the number of cycles is greater than a preset number of cycles threshold, a zeroing operation is performed.

[0072] For example, the detection cycle count m can be incremented by 1 to determine if m > a preset cycle count threshold M, where M represents the pre-set limit for the detection cycle. If m ≤ M, the detection value of the target laser tube can be periodically reacquired; if m > M, the zeroing operation can be re-executed.

[0073] The method provided in this embodiment of the invention can avoid the inability to accurately obtain the detection concentration when a single set of laser tubes and receivers fails, and can also extend the service life of the sensor. The application of the scroll can clean the contamination on the surface of the laser tubes and receivers.

[0074] In addition, a single-roll particulate sensor can also be set in this embodiment. For example, the particulate sensor includes a laser tube and a receiver, with the laser tube and receiver arranged vertically.

[0075] See Figure 6 The diagram shows another particulate sensor. This particulate sensor adopts a single-spindle design, perpendicular to the airflow direction of the pipe, which can reduce the structure of the device and facilitate the maintenance of the particulate sensor.

[0076] This invention provides a particulate sensor with a self-cleaning roll structure, which can improve the surface contamination resistance of the particulate sensor components, extend the service life of the particulate sensor, and reduce the later maintenance costs of the particulate sensor.

[0077] This invention provides a processing method for a dual-channel alternating particulate matter sensor, which can improve the fault tolerance capability after a single group of the particulate matter sensor fails, extend the service life of the particulate matter sensor, and reduce the later maintenance cost of the particulate matter sensor.

[0078] Example 3:

[0079] Corresponding to the above method embodiments, this invention provides a particulate matter sensor processing device, applied to a particulate matter sensor processing system. The particulate matter sensor processing system includes: a detection pipeline and a zeroing pipeline. The detection pipeline includes: a diaphragm air pump, a first high-efficiency filter element, a particulate matter sensor, and a detection air valve connected in sequence, with the detection air valve connected to an external smoke exhaust pipe. The zeroing pipeline includes: a diaphragm air pump, a first high-efficiency filter element, a particulate matter sensor, a second high-efficiency filter element, and a zeroing air valve connected in sequence, with the zeroing air valve connected to outdoor air.

[0080] Based on the above description, see Figure 7 The diagram shows a structural schematic of a particulate matter sensor processing device, which includes:

[0081] The optical path switching module 71 is used to switch the optical path of the particulate sensor via a reel set by the particulate sensor.

[0082] The detection operation execution module 72 is used to perform detection operations based on the optical path of the switched particulate matter sensor by passing the detection gas discharged from the exhaust pipe through the detection pipeline using the diaphragm air pump.

[0083] Zeroing operation execution module 73 is used to perform zeroing operation based on the optical path of the switched particulate matter sensor, by using a diaphragm air pump to pass outdoor air through the zeroing pipeline.

[0084] This invention provides a processing device for a particulate matter sensor. The device allows switching the optical path of the particulate matter sensor via a roller mechanism. A diaphragm air pump drives the detection gas discharged from the exhaust duct through the detection pipeline, and a detection operation is performed based on the switched optical path of the particulate matter sensor. Additionally, the diaphragm air pump drives outdoor air through a zeroing pipeline, and a zeroing operation is performed based on the switched optical path of the particulate matter sensor. This improves the fault tolerance of the particulate matter sensor after a single failure, extends its service life, and reduces its maintenance costs.

[0085] The particulate sensor described above includes: a through tube, a spool, a laser tube, and a receiver; the spool is disposed on the surface of the laser tube and the receiver, and the laser tube and the receiver form an optical path through the through hole.

[0086] The aforementioned device also includes a particulate matter cleaning module, used to clean particulate matter from the laser tube and receiver using a reel set by the particulate matter sensor after the detection or zeroing operation is completed.

[0087] The aforementioned roll is a flexible cotton roll.

[0088] The aforementioned particulate matter sensor includes: a first laser tube, a second laser tube, a first receiver, and a second receiver; the aforementioned device further includes: a laser tube and a laser tube switching module, used to clean the particulate matter in the first laser tube and the first receiver by means of a scroll provided on the surface of the first laser tube and the first receiver, and to expose the through holes provided in the second laser tube and the second receiver, when the particulate matter concentration determined based on the optical path of the second laser tube and the second receiver drifts; or; to clean the particulate matter in the second laser tube and the second receiver by means of a scroll provided on the surface of the second laser tube and the second receiver, and to expose the through holes provided in the first laser tube and the first receiver, when the particulate matter concentration determined based on the optical path of the second laser tube and the second receiver drifts.

[0089] The particulate matter sensor described above includes a laser tube and a receiver, with the laser tube and receiver arranged vertically.

[0090] The above zeroing operation includes: determining the current zeroing value of the target laser tube and the target receiver; wherein the target laser tube and the target receiver are respectively: a first laser tube and a first receiver, or a second laser tube and a second receiver; if the target laser tube and the target receiver are being zeroed for the first time, the current zeroing value is used as the initial zeroing value of the target laser tube and the target receiver; and switching the target laser tube and the target receiver.

[0091] The above-mentioned zeroing operation also includes: if the target laser tube and target receiver are not zeroed for the first time, determining the absolute value of the difference between the current zeroing value and the initial zeroing value of the target laser tube and target receiver; if the absolute value is greater than the preset drift threshold, cleaning the contaminants in the target laser tube and target receiver using a scroll set on the surface of the target laser tube and target receiver; switching the target laser tube and target receiver; if the absolute value is less than or equal to the drift threshold, ending the detection operation.

[0092] The above detection operations include: determining the detection values ​​of the target laser tube and the target receiver; and determining the concentration values ​​of the target laser tube and the target receiver based on the detection values ​​of the target laser tube and the target receiver, the initial zeroing value, and the current zeroing value.

[0093] The concentration values ​​of the target laser tube and target receiver are determined using the following formula based on the detection values ​​of the target laser tube and target receiver, the initial zeroing value, and the current zeroing value: ρ = ρ 测 +(ρ 0x -ρ 出x ); where ρ is the concentration value of the target laser tube and the target receiver, ρ 测 ρ represents the detection values ​​of the target laser tube and the target receiver. 0x ρ is the current zeroing value for the target laser tube and the target receiver. 出x This is the initial zeroing value for the target laser tube and the target receiver.

[0094] The above-mentioned device also includes: a cycle count processing module, used to determine the cycle count of the optical path between the laser tube and the receiver; if the cycle count is greater than a preset cycle count threshold, a zeroing operation is performed.

[0095] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the particulate matter sensor processing device described above can be referred to the corresponding process in the embodiments of the particulate matter sensor processing method described above, and will not be repeated here.

[0096] Example 4:

[0097] This invention also provides an electronic device for operating the above-described particulate matter sensor processing method; see [link to related documentation]. Figure 8The diagram shows the structure of an electronic device, which includes a memory 100 and a processor 101. The memory 100 stores one or more computer instructions, which are executed by the processor 101 to implement the above-mentioned particulate matter sensor processing method.

[0098] Furthermore, Figure 8 The electronic device shown also includes a bus 102 and a communication interface 103, with the processor 101, the communication interface 103 and the memory 100 connected via the bus 102.

[0099] The memory 100 may include high-speed random access memory (RAM) or non-volatile memory, such as at least one disk storage device. Communication between this system network element and at least one other network element is achieved through at least one communication interface 103 (which can be wired or wireless), such as the Internet, wide area network, local area network, or metropolitan area network. The bus 102 may be an ISA bus, PCI bus, or EISA bus, etc. The bus can be divided into address bus, data bus, control bus, etc. For ease of representation, Figure 8 The symbol is represented by a single double-headed arrow, but this does not mean that there is only one bus or one type of bus.

[0100] Processor 101 may be an integrated circuit chip with signal processing capabilities. In implementation, each step of the above method can be completed by the integrated logic circuitry in the hardware of processor 101 or by instructions in software form. Processor 101 can be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), etc.; it can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this invention. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this invention can be directly manifested as execution by a hardware decoding processor, or execution by a combination of hardware and software modules in the decoding processor. The software module can reside in a readily available storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, or registers. This storage medium is located in memory 100, and processor 101 reads information from memory 100 and, in conjunction with its hardware, completes the steps of the method described in the foregoing embodiments.

[0101] This invention also provides a computer-readable storage medium storing computer-executable instructions. When these computer-executable instructions are called and executed by a processor, they cause the processor to implement the above-described particulate matter sensor processing method. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0102] The particulate matter sensor processing method, apparatus, electronic device, and readable storage medium provided in the embodiments of the present invention include a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the preceding method embodiments. For specific implementation, please refer to the method embodiments, which will not be repeated here.

[0103] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and / or device described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0104] Furthermore, in the description of the embodiments of the present invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention based on the specific circumstances.

[0105] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, essentially, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0106] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0107] Finally, it should be noted that the above-described embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the technical scope disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A processing method for a particulate matter sensor, characterized in that, A processing system for a particulate matter sensor, comprising: a detection pipeline and a zeroing pipeline; the detection pipeline comprising: a diaphragm air pump, a first high-efficiency filter, the particulate matter sensor, and a detection air valve connected in sequence, the detection air valve being connected to an external smoke exhaust duct; the zeroing pipeline comprising: the diaphragm air pump, the first high-efficiency filter, the particulate matter sensor, a second high-efficiency filter, and a zeroing air valve connected in sequence, the zeroing air valve being connected to outdoor air; the method comprising: The optical path of the particulate sensor is switched by a scroll mechanism; wherein the particulate sensor has multiple preset optical paths. The detection gas discharged from the exhaust pipe is driven by the diaphragm air pump through the detection pipeline, and the detection operation is performed based on the optical path of the switched particulate matter sensor. The outdoor air is passed through the zeroing pipeline by the diaphragm air pump, and the zeroing operation is performed based on the optical path of the switched particulate matter sensor. The particulate sensor includes: a through tube, a spool, a laser tube, and a receiver; the spool is disposed on the surface of the laser tube and the receiver, and the laser tube and the receiver form the optical path through a through hole; The method further includes: after the detection operation or the zeroing operation is completed, starting the roller of the particulate sensor, the laser tube and the receiver are covered by the rolled-out flexible cotton to clean the particulate matter in the laser tube and the receiver, and exposing the through holes of the laser tube and the receiver.

2. The method according to claim 1, characterized in that, The roll is a flexible cotton roll.

3. The method according to claim 1, characterized in that, The particulate sensor includes: a first laser tube, a second laser tube, a first receiver, and a second receiver; the method further includes: When the particle concentration determined based on the optical path of the first laser tube and the first receiver drifts, the rollers on the surfaces of the first laser tube and the first receiver are activated. The first laser tube and the first receiver are covered by the rolled-out flexible cotton to clean the particles in the first laser tube and the first receiver, and the through holes of the second laser tube and the second receiver are exposed. Alternatively; when the particle concentration determined based on the optical path of the second laser tube and the second receiver drifts, the rollers provided on the surfaces of the second laser tube and the second receiver are activated, and the second laser tube and the second receiver are covered by the rolled-out flexible cotton to clean the particles in the second laser tube and the second receiver, and the through holes provided in the first laser tube and the first receiver are exposed.

4. The method according to claim 2, characterized in that, The particulate sensor includes a laser tube and a receiver, wherein the laser tube and the receiver are arranged vertically.

5. The method according to claim 3, characterized in that, The zeroing operation includes: Determine the current zeroing values ​​of the target laser tube and the target receiver; wherein the target laser tube and the target receiver are respectively: the first laser tube and the first receiver, or the second laser tube and the second receiver; If the target laser tube and the target receiver are being zeroed for the first time, the current zeroing value is used as the initial zeroing value for the target laser tube and the target receiver. Switch the target laser tube and the target receiver.

6. The method according to claim 5, characterized in that, The zeroing operation also includes: If the target laser tube and the target receiver are not being zeroed for the first time, determine the absolute value of the difference between the current zero value and the initial zero value of the target laser tube and the target receiver; If the absolute value is greater than a preset drift threshold, the particles in the target laser tube and the target receiver are cleaned by a scroll provided on the surface of the target laser tube and the target receiver; the target laser tube and the target receiver are then switched. If the absolute value is less than or equal to the drift threshold, the detection operation ends.

7. The method according to claim 5, characterized in that, The detection operation includes: Determine the detection values ​​of the target laser tube and the target receiver; The concentration values ​​of the target laser tube and the target receiver are determined based on the detection values, the initial zeroing value, and the current zeroing value.

8. The method according to claim 7, characterized in that, The concentration values ​​of the target laser tube and the target receiver are determined using the following formula based on the detection values, initial zeroing value, and current zeroing value: p=p 测 +(r 0x -r 出x ); Where ρ represents the concentration values ​​of the target laser tube and the target receiver. 测 ρ represents the detection values ​​of the target laser tube and the target receiver. 0x ρ is the current zeroing value for the target laser tube and the target receiver. 出x This is the initial zeroing value for the target laser tube and the target receiver.

9. The method according to claim 1, characterized in that, The method further includes: Determine the number of cycles in the optical path of the laser tube and the receiver; If the number of cycles exceeds a preset threshold, a zeroing operation is performed.

10. A processing device for a particulate matter sensor, characterized in that, A processing system for a particulate matter sensor, comprising: a detection pipeline and a zeroing pipeline; the detection pipeline comprising: a diaphragm air pump, a first high-efficiency filter, the particulate matter sensor, and a detection air valve connected in sequence, the detection air valve being connected to an external smoke exhaust duct; the zeroing pipeline comprising: the diaphragm air pump, the first high-efficiency filter, the particulate matter sensor, a second high-efficiency filter, and a zeroing air valve connected in sequence, the zeroing air valve being connected to outdoor air; the device comprising: The optical path switching module is used to switch the optical path of the particulate sensor via a scroll provided with the particulate sensor; wherein the particulate sensor has multiple optical path presets. The detection operation execution module is used to perform a detection operation based on the optical path of the switched particulate matter sensor, by passing the detection gas discharged from the exhaust pipe through the detection pipeline using the diaphragm air pump. The zeroing operation execution module is used to perform a zeroing operation based on the switched optical path of the particulate matter sensor by passing outdoor air through the zeroing pipeline using the diaphragm air pump. The particulate sensor includes: a through tube, a spool, a laser tube, and a receiver; the spool is disposed on the surface of the laser tube and the receiver, and the laser tube and the receiver form the optical path through a through hole; The device also includes a particulate matter cleaning module, which is used to start the roller of the particulate matter sensor after the detection operation or the zeroing operation is completed. The laser tube and the receiver are covered by the rolled-out flexible cotton to clean the particulate matter in the laser tube and the receiver, and expose the through holes of the laser tube and the receiver.

11. An electronic device, characterized in that, The device includes a processor and a memory, the memory storing computer-executable instructions that can be executed by the processor, the processor executing the computer-executable instructions to implement the particulate sensor processing method according to any one of claims 1 to 9.

12. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when invoked and executed by a processor, cause the processor to implement the particulate matter sensor processing method according to any one of claims 1 to 9.

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