A particle detection apparatus and cleaning device

Abstract

The embodiment of the application discloses a particle detection device, which is installed on a guide pipe of a cleaning device, and comprises a light emitter, a light receiver, a controller and a light shield; wherein the light emitter and the light receiver are arranged on the outer wall of the guide pipe; the light shield is arranged on the side wall of the guide pipe and is perpendicular to the extension surface of the guide pipe; the controller is connected with the light emitter and the light receiver respectively, and is arranged on the outer side of the guide pipe; the controller is used for controlling the light emitter to emit a light beam and the light receiver to receive part of the light beam passing through the light transmission area of the light shield when the air suction module of the cleaning device is controlled to suck air through the air inlet of the guide pipe and make the air flow along the guide pipe; and the particle information of the particles is determined based on the part of the light beam and the emitted light beam, wherein the light beam in the emitted light beam, except the part of the light beam, is blocked by the particles in the air sucked into the guide pipe and cannot pass through the light transmission area.

Description

Technical Field

[0001] The present application relates to the field of smart home technology, and in particular to a particle detection device and cleaning equipment. Background Art

[0002] With the development of intelligent cleaning technology, cleaning equipment has entered different scenarios such as homes, shopping malls, and factories for cleaning work, greatly reducing the cleaning work of humans.

[0003] In the prior art, dust particle detection in cleaning equipment involves using lasers and lenses to generate parallel light to detect and count dust particles. While this method offers high detection accuracy, the device is bulky and difficult to install within the cleaning equipment's pipes. Therefore, a new particle detection device is urgently needed for cleaning equipment.

[0004] Application Contents

[0005] The embodiments of the present application provide a particle detection device and a cleaning device, which not only simplifies the design structure of the particle detection device, but also improves the signal-to-noise ratio and enhances the accuracy of detection.

[0006] The technical solution of this application is achieved as follows:

[0007] A particle detection device is installed on a conduit of a cleaning device, and includes a light emitter, a light receiver, a controller, and a light shielding sheet; wherein,

[0008] The light emitter and the light receiver are both arranged on the outer wall of the conduit;

[0009] The light shielding sheet is arranged on the side wall of the conduit and is perpendicular to the extension surface of the conduit;

[0010] The controller is connected to the light emitter and the light receiver respectively, and the controller is arranged on the outside of the catheter;

[0011] The controller is used to control the light emitter to emit a light beam and control the light receiver to receive a portion of the light beam that passes through the light-transmitting area of ​​the shading sheet when the air suction module of the cleaning equipment inhales air through the air inlet of the duct and causes the air to flow along the duct; and determine particle information of the particles based on the partial light beam and the emitted light beam, wherein the light beam in the emitted light beam other than the partial light beam is blocked by the particles in the air inhaled into the duct and cannot pass through the light-transmitting area.

[0012] A cleaning device comprises a particle detection device.

[0013] The particle detection device and cleaning device provided in the embodiment of the present application are installed on the duct of the cleaning device, and the particle detection device includes a light emitter, a light receiver, a controller and a light shielding plate; wherein the light emitter and the light receiver are both arranged on the outer wall of the duct; the light shielding plate is arranged on the side wall of the duct and is perpendicular to the extension surface of the duct; the controller is connected to the light emitter and the light receiver respectively, and the controller is arranged on the outside of the duct; the controller is used to control the light emitter to emit a light beam when the suction module of the cleaning device sucks air through the air inlet of the duct and makes the air flow along the duct, and control the light receiver to receive a part of the light beam that passes through the light-transmitting area of ​​the light shielding plate; the particle information of the particles is determined based on the partial light beam and the emitted light beam, Among them, the light beam except for a part of the light beam is blocked by the particles in the air sucked into the conduit and cannot pass through the light-transmitting area; that is, when the particles sucked into the conduit block the emission light beam, only the light beam in the direct part of the light beam that is not blocked by the particles passes through the light-transmitting area of ​​the light-shielding plate arranged in the conduit, that is, the light receiving tube only receives the direct part of the emission light beam that is not blocked by the particles and passes through the light-transmitting area of ​​the light-shielding plate, so as to filter the diffuse reflection signal and the noise signal; in this way, by setting the light-transmitting area of ​​the light-shielding plate, not only the detection and counting of particles can be realized, but also the design structure of the particle detection device is simplified; at the same time, the signal-to-noise ratio of the signal is improved, the detection accuracy is improved, and the production cost is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A structural block diagram of a particle detection device provided in an embodiment of the present application;

[0015] Figure 2A A schematic structural diagram of a particle detection device provided in an embodiment of the present application;

[0016] Figure 2B A schematic structural diagram of another particle detection device provided in an embodiment of the present application;

[0017] Figure 3 A schematic diagram of a particle detection device provided in an embodiment of the present application filtering light through a light-transmitting area of ​​a light-shielding sheet;

[0018] Figure 4 A schematic diagram of changes in photocurrent generated by a light beam in a particle detection device provided in an embodiment of the present application;

[0019] Figure 5 A schematic diagram of another particle detection device provided in an embodiment of the present application filtering light through a light-transmitting area of ​​a light-shielding sheet;

[0020] Figure 6 A schematic structural diagram of a cleaning device provided in an embodiment of the present application;

[0021] Figure 7A A schematic diagram of a cleaning device provided in an embodiment of the present application;

[0022] Figure 7B A schematic diagram of another cleaning device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 this application.

[0024] The terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish between different objects, not to describe a particular order. Furthermore, the terms "including," "having," and any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, product, or apparatus comprising a series of steps or elements is not limited to the listed steps or elements but may optionally include steps or elements not listed, or may optionally include other steps or elements inherent to the process, method, product, or apparatus.

[0025] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0026] The present invention provides a particle detection device. Figure 1 As shown, Figure 1 What is shown is a structural block diagram of a particle detection device, which is installed on a conduit (not shown in the figure) of a cleaning device (not shown in the figure). The particle detection device 10 includes a light emitter 101, a light receiver 102, a controller 103 and a light shielding plate 104.

[0027] Specifically, combined Figure 1 、 Figure 2A and Figure 2B As shown, Figure 2A and Figure 2B : is a schematic structural diagram of a particle detection device 10 according to an embodiment of the present application, wherein:

[0028] The light emitter 101 and the light receiver 102 are both arranged on the outer wall of the conduit 201;

[0029] The light shielding sheet 104 is provided on the side wall of the conduit 201 and is perpendicular to the extension surface of the conduit 201;

[0030] The controller 103 is connected to the light emitter 101 and the light receiver 102 respectively, and the controller 103 is arranged outside the catheter 201;

[0031] The controller 103 is used to control the light emitter 101 to emit a light beam and control the light receiver 102 to receive a portion of the light beam that passes through the light-transmitting area of ​​the shading plate 104 when the air suction module 202 of the cleaning equipment is controlled to inhale air through the air inlet of the duct 201 and make the air flow along the duct 201; determine the particle information of the particles based on the partial light beam and the emitted light beam, wherein the light beam in the emitted light beam other than the partial light beam is blocked by the particles in the air inhaled into the duct 201 and cannot pass through the light-transmitting area.

[0032] In the embodiment of the present application, the light emitter 101 and the light receiver 102 are both disposed on the outer wall of the conduit 201 , and the direction of the light receiver 102 is aligned with the emission direction of the emission light beam of the light emitter 101 .

[0033] In one possible implementation, see Figure 2A As shown, the light emitter 101 is parallel to the first tangent plane of the outer wall and the light receiver 102 is parallel to the second tangent plane of the outer wall, and the light shielding sheet 104 is arranged on the inner side of the conduit 201 and is perpendicular to the extension plane of the conduit 201 and parallel to the first tangent plane or the second tangent plane; Figure 2A As shown, when light emitter 101 emits a first number of light beams in a first direction, when the light beams reach light shielding plate 104, the light-transmitting area of ​​light shielding plate 104 allows the light beams to pass through, while the light-opaque area prevents the light beams from passing through. At this time, the number of partial light beams that pass through the light-transmitting area of ​​light shielding plate 104 is a second number, which is less than the first number. Furthermore, in one feasible scenario, the center position of the first tangent plane between light emitter 101 and the outer wall, the center position of the second tangent plane between light receiver 102 and the outer wall, and the center position of the light-transmitting area of ​​light shielding plate 104 are all on a straight line.

[0034] In another possible implementation, see Figure 2B As shown, the light emitter 101 and the extension surface of the first tangent surface of the outer wall intersect with the light receiver 102 and the extension surface of the second tangent surface of the outer wall, as shown in FIG. Figure 2BAs shown, when light emitter 101 emits a first number of light beams in a first direction, when the light beams reach light shielding plate 104, the light-transmitting area of ​​light shielding plate 104 allows the light beams to pass through, while the light-opaque area prevents the light beams from passing through. At this time, the number of partial light beams that pass through the light-transmitting area of ​​light shielding plate 104 is a third number, which is less than the second number. Furthermore, in one feasible scenario, the center position of the first tangent plane between light emitter 101 and the outer wall, the center position of the second tangent plane between light receiver 102 and the outer wall, and the center position of the light-transmitting area of ​​light shielding plate 104 are all on a straight line.

[0035] In the embodiment of this application, Figure 2A and Figure 2B As shown, the light shielding sheet 104 is arranged inside the conduit 201 and is perpendicular to the extension surface of the conduit 201 .

[0036] In one achievable manner, the light shielding sheet 104 is fixed to the inner side of the conduit 201 by an adhesive material, there is a distance between the light shielding sheet 104 and the conduit 201 , and the light shielding sheet 104 is perpendicular to the extension surface of the conduit 201 .

[0037] In another achievable manner, the light shielding sheet 104 is attached to the inner side of the conduit 201 by adhesive material, that is, there is no distance between the light shielding sheet 104 and the conduit 201 , and the light shielding sheet 104 is perpendicular to the extension surface of the conduit 201 .

[0038] In one achievable manner, the light shielding sheet 104 is fixed to the outside of the conduit 201 by an adhesive material, there is a distance between the light shielding sheet 104 and the conduit 201 , and the light shielding sheet 104 is perpendicular to the extension surface of the conduit 201 .

[0039] In another achievable manner, the light shielding sheet 104 is attached to the outside of the conduit 201 by adhesive material, that is, there is no distance between the light shielding sheet 104 and the conduit 201 , and the light shielding sheet 104 is perpendicular to the extension surface of the conduit 201 .

[0040] In the embodiment of this application, Figure 1 、 Figure 2A and Figure 2B As shown, when the controller 103 controls the air intake module 202 of the cleaning equipment to inhale air through the air inlet of the duct 201 and makes the air flow along the duct 201, it controls the light emitter 101 to emit a light beam, and controls the light receiver 102 to receive a portion of the light beam that passes through the light-transmitting area of ​​the shading plate 104, and determines the particle information of the particles based on the partial light beam and the emitted light beam, wherein the light beam in the emitted light beam except the partial light beam is blocked by the particles in the air inhaled into the duct 201 and cannot pass through the light-transmitting area.

[0041] It should be noted that the air inhaled by the air inlet of the duct 201 through the air inlet module 202 of the cleaning equipment contains particles of different types, regular shapes, sizes and positions. Figure 3 As shown, due to the different shapes and sizes of particles such as small droplets, sewage, and dust, the particles 11 in the air sucked into the duct (not shown) and the irregular surfaces of the particles 12 have a blocking and scattering effect on the emission light beam emitted by the light emitter 101, thereby generating a scattered light beam 13 and a direct light beam 14 that is not blocked by the particles.

[0042] Further, combined with Figure 3 As shown, the light-transmitting area 15 of the shielding sheet 104 filters at least the scattered light beam 13 generated above to obtain a partial light beam, wherein the partial light beam includes a direct light beam, and the controller 103 controls the light receiver 102 to receive the partial light beam.

[0043] In one achievable approach, combining Figure 3 As shown, the light-transmitting area 15 of the shielding sheet 104 filters at least all of the scattered light beams 13 generated above to obtain partial light beams. The controller 103 controls the light receiver 102 to receive the partial light beams, wherein the partial light beams include the direct light beam 14 .

[0044] In another possible implementation, combining Figure 3 As shown, the light-transmitting area 15 of the shielding plate 104 filters the partial scattered light beam 13 in the scattered light beam generated above to obtain a partial light beam, and the controller 103 controls the light receiver 102 to receive the partial light beam, wherein the partial light beam includes the direct light beam 14 and the remaining scattered light beam, and the scattered light beam includes the partial scattered light beam and the remaining scattered light beam.

[0045] From the above, it can be seen that in the embodiment of the present application, through the shielding effect of the shading plate on the scattered light beam, all scattered signals of the scattered light beam are filtered out as much as possible, and only the direct signal of the direct light beam that is not blocked by the particles is retained as much as possible, ensuring that the photocurrent generated by the partial light beam received by the optical receiver only reflects the blocking of the direct light beam by the particles. In this way, by setting the shading plate, the noise signal generated by the scattered light beam is suppressed, and the ratio of the effective signal corresponding to the direct light beam to the noise signal is increased, that is, the signal-to-noise ratio of the particle detection device is improved.

[0046] In other embodiments of the present application, the controller 103 determines the particle information of the particle based on the current amplitude between the photocurrent generated by the partial light beam and the photocurrent generated by the emission light beam.

[0047] In one possible implementation, see Figure 4As shown, the horizontal axis represents time T in milliseconds (ms), and the vertical axis represents the current value I of the photocurrent in milliamperes (mA). Here, the controller detects the first current value I1 of the photocurrent generated by the partial light beam received by the light receiver, and detects the second current value I2 of the photocurrent generated by the emission light beam received by the light receiver that is not blocked and / or scattered by particles in the air. Since the particle size of the particle is directly proportional to the change in the current amplitude, the particle size of the particle is determined based on the difference between the first current value I1 and the second current value I2, wherein the particle information includes the particle size. Here, the particle size of the particle is directly proportional to the difference between the first current value I1 and the second current value. It should be noted that when the emission light beam is blocked by particles, the larger the particle size, the higher the light intensity of the blocked emission light beam, and the greater the attenuation of the photocurrent generated by the light beam received by the light receiver.

[0048] In other embodiments of the present application, when the controller determines the particle size of the particles based on the current amplitude between the photocurrent generated by the partial light beam and the photocurrent generated by the emission light beam, it can also obtain the number of particles passing through the particle detection device within the target time period and determine the particle distribution in the particle detection device.

[0049] In one achievable manner, when the controller determines the particle size of the particles, it counts each particle passing through the particle detection device within a target time period to obtain the number of particles.

[0050] In another achievable embodiment, the controller determines the particle size and, within a target time period, classifies each particle passing through the particle detection device according to a particle size distribution strategy to obtain a particle distribution profile. The distribution strategy may include classifying particles according to different sizes and volumes. For example, within the target time period, the volume of all particles is obtained, and a histogram is plotted based on the volume distribution intervals to obtain the particle distribution profile.

[0051] In other embodiments of the present application, in one case, the light emitter can be an infrared emitter such as an infrared emitting tube, and the corresponding light receiver can be an infrared receiver such as an infrared receiving tube; in another case, the light emitter can also be an LED light source, and correspondingly, the light receiver can be a light source receiver. It is understood that regardless of whether the light emitter is an infrared emitting tube, an LED light source, or other light emitter, the corresponding light receiver can detect particles in the air sucked into the conduit by comparing the intensity of the received partial light beam with the intensity of the transmitted light beam emitted by the light emitter.

[0052] In other embodiments of this application, Figure 2AAs shown, the light emitter 101 is parallel to the first tangent plane of the outer wall, the light receiver 102 is parallel to the second tangent plane of the outer wall, and the light shielding sheet 104 is parallel to the first tangent plane.

[0053] In one achievable approach, combining Figure 2A As shown, the light emitter 101 is parallel to the first tangent plane of the outer wall and the light receiver 102 is parallel to the second tangent plane of the outer wall, and the light shielding sheet 104 is parallel to the first tangent plane; that is, the emission direction of the light emitter 101 located on the outer wall of the conduit 201 passes through the center position of the extension surface of the conduit 201, and the emission direction of the light emitter 101 is aligned with the light receiver 102 located on the outer wall of the conduit 201, and the light shielding sheet 104 is perpendicular to the line between the light emitter 101 and the light receiver 102.

[0054] In other embodiments of the present application, the lines connecting the center position of the light emitter, the center position of the light-transmitting area of ​​the light-shielding plate, and the center position of the light receiver are on the same straight line. The light-shielding plate can be set at any position within the distance threshold range between the light emitter and the light-shielding plate. The light-shielding plate can also be set at any position within the distance threshold range between the light receiver and the light receiver. The distance threshold range is between the first threshold and the second threshold, and the first threshold is less than the second threshold.

[0055] In one possible implementation, see Figure 3 As shown, if the light shielding plate 104 is set at a position within the distance threshold range between the light shielding plate 104 and the light receiver 102, that is, the distance between the position of the light shielding plate 104 and the position of the light receiver 102 is greater than a first threshold value such as 1 mm, and less than a second threshold value such as 10 mm, then the light-transmitting area 15 of the light shielding plate 104 can filter the generated scattered light beam 13, ensuring that the light receiver 102 only receives the unblocked direct light beam 14, or only receives the unblocked direct light beam 14 and a small amount of scattered light beam.

[0056] It should be noted that, see Figure 5 As shown, in one case, the distance between the light shielding sheet 104 and the position of the light receiver 102 is less than a first threshold, such as 1 mm. This means that the light shielding sheet 104 is essentially in contact with the light receiver 102, and the light-transmitting area 15 of the light shielding sheet 104 cannot completely or partially filter the generated scattered light beam 13, thereby failing to improve the signal-to-noise ratio of particle detection. In another case, the distance between the light shielding sheet 104 and the position of the light receiver 102 is greater than a second threshold, such as 10 mm. The light-transmitting area of ​​the light shielding sheet 104 can still filter the generated scattered light beam, ensuring that the light receiver 102 receives only the unobstructed direct light beam, or only the unobstructed direct light beam and a small amount of scattered light beam. However, this configuration wastes space and the photocurrent generated by the direct light beam is attenuated.

[0057] From the above, it can be seen that the particle detection device, by setting the distance between the light shielding plate and the light receiver within the distance threshold range, not only eliminates the influence caused by the change in the distance between the particles and the light emitting tube, but also ensures the accuracy of the photocurrent generated by the direct light beam and improves the signal-to-noise ratio of the particle detection, thereby improving the accuracy of the detected particle information; at the same time, it reduces the utilization rate of space.

[0058] In other embodiments of the present application, in the upper and lower spaces of the three-dimensional space, the first length of the light-transmitting area of ​​the particle detection device is smaller than the second length of the cross section of the emitted light beam in the emission direction.

[0059] In the embodiment of the present application, the three-dimensional space includes three axes, an X-axis, a Y-axis, and a Z-axis, where the X-axis represents the left and right space, the Y-axis represents the front and back space, and the Z-axis represents the top and bottom space.

[0060] In one possible implementation, see Figure 3 As shown, if the direction from the first particle 11 to the second particle 12 is the positive direction of the Z axis in the three-dimensional space, and the direction from the first particle 11 to the second particle 12 is the airflow direction of the particles in the conduit (not shown in the figure), the length of the light-transmitting area 15 in the Z axis direction is determined to be a first length, and the length of the cross-section of the emitted light beam in the emission direction in the Z axis direction is determined to be a second length, and the first length is smaller than the second length.

[0061] In other embodiments of the present application, in the front and rear spaces of the particle detection device in the three-dimensional space, the third length of the light-transmitting area is greater than the first length.

[0062] In one possible implementation, see Figure 3 As shown, if the direction from the first particle 11 to the second particle 12 is the positive direction of the Z axis in the three-dimensional space, and the direction from the first particle 11 to the second particle 12 is the airflow direction of the particles in the duct (not shown in the figure), the length of the light-transmitting area 15 in the Y-axis direction, that is, in the direction perpendicular to the airflow direction, is determined to be the third length, and the third length is greater than the first length.

[0063] In other embodiments of the present application, the third length of the light-transmitting area satisfies the first length threshold range, and the first length satisfies the second length threshold range. For example, the first length threshold range is greater than 5 mm, and the second length threshold range is less than 1 mm.

[0064] In other embodiments of the present application, the ratio of the third length of the light-transmitting region to the first length satisfies a target ratio threshold range to ensure that a direct light beam not blocked by particles can pass through the light-transmitting region and reach the light receiver. For example, the target ratio threshold is 3, i.e., the ratio of the third length of the light-transmitting region to the first length is greater than 3.

[0065] It should be noted that if the light-transmitting area of ​​the light-shielding plate is too small, although part of the light beam received by the light receiving tube is only the direct light beam, and the cleaner the signal corresponding to the direct light beam, the lower the noise, but due to the reduction in the intensity of the transmitted light, the overall signal is reduced, resulting in inaccurate information about the detected particles. If the light-transmitting area is too large, part of the light beam received by the light receiving tube includes not only the direct light beam that is not blocked by the particles, but also the scattered light beam. Although the light intensity corresponding to the direct light beam that is not blocked increases, the noise generated by the scattered light beam also increases, resulting in a decrease in the signal-to-noise ratio of the detection. Therefore, when the third length of the light-transmitting area meets the first length threshold range, the first length meets the second length threshold range, and the ratio between the third length and the first length meets the target ratio threshold, the light-transmitting area determined in this way can not only ensure that the direct light beam that is not blocked by the particles passes through, but also filter out the scattered light beam, thereby improving the accuracy of the detection and improving the signal-to-noise ratio of the detection.

[0066] In other embodiments of the present application, the material of the light-shielding sheet includes a metal material, and the light-transmitting area is the area where the through hole on the light-shielding sheet is located.

[0067] In other embodiments of the present application, the light-shielding sheet includes a flexible circuit board, and the light-transmitting area is the area where the transparent film on the flexible circuit board is located.

[0068] Here, the conductive layer in the flexible circuit board forms the light-shielding area, and the transparent film area forms the light-transmitting area. Due to the presence of the conductive material, static electricity is less likely to accumulate near the slit, and dust is less likely to adhere.

[0069] In one feasible method, when a conductive layer exists on the flexible circuit board, a window is opened on the flexible circuit board, that is, copper is not laid in the light-transmitting area, so that the light-transmitting effect can be achieved.

[0070] The particle detection device provided in the embodiment of the present application is installed on the duct of the cleaning equipment, and the particle detection device includes a light emitter, a light receiver, a controller and a light shielding plate; wherein the light emitter and the light receiver are both arranged on the outer wall of the duct; the light shielding plate is arranged on the side wall of the duct and is perpendicular to the extension surface of the duct; the controller is connected to the light emitter and the light receiver respectively, and the controller is arranged on the outside of the duct; the controller is used to control the light emitter to emit a light beam when the suction module of the cleaning equipment inhales air through the air inlet of the duct and causes the air to flow along the duct, and to control the light receiver to receive a portion of the light beam that passes through the light-transmitting area of ​​the light shielding plate; the particle information of the particles is determined based on the partial light beam and the emitted light beam, wherein, The light beams other than a part of the emission light beam are blocked by the particles in the air sucked into the conduit and cannot pass through the light-transmitting area; that is, when the particles sucked into the conduit block the emission light beam, only the light beams in the direct part of the light beam that are not blocked by the particles pass through the light-transmitting area of ​​the light-shielding plate arranged in the conduit, that is, the light receiving tube only receives the direct part of the emission light beam that is not blocked by the particles and passes through the light-transmitting area of ​​the light-shielding plate, so as to filter the diffuse reflection signal and the noise signal; in this way, by setting the light-transmitting area of ​​the light-shielding plate, not only the detection and counting of particles can be realized, but also the design structure of the particle detection device is simplified; at the same time, the signal-to-noise ratio of the signal is improved, the detection accuracy is improved, and the production cost is reduced.

[0071] The present application provides a cleaning device. Figure 6 As shown, Figure 6 The figure shows a structural block diagram of a cleaning device, wherein the cleaning device 20 includes the particle detection device 10, wherein the cleaning device 20 includes a conduit 201 and an air suction module 202, and the particle detection device 10 includes a light emitter 101, a light receiver 102, a controller 103 and a light shielding sheet 104, wherein,

[0072] The light emitter 101 and the light receiver 102 are both arranged on the outer wall of the conduit 201;

[0073] The light shielding sheet 104 is provided on the side wall of the conduit 201 and is perpendicular to the extension surface of the conduit 201;

[0074] The controller 103 is connected to the light emitter 101 and the light receiver 102 respectively, and the controller 103 is arranged outside the catheter 201;

[0075] The controller 103 is used to control the light emitter 101 to emit a light beam and control the light receiver 102 to receive a portion of the light beam that passes through the light-transmitting area of ​​the shading plate 104 when the suction module 202 of the cleaning device 20 is controlled to inhale air through the air inlet of the duct 201 and make the air flow along the duct 201; determine the particle information of the particles based on the partial light beam and the emitted light beam, wherein the light beam in the emitted light beam other than the partial light beam is blocked by the particles in the air inhaled into the duct 201 and cannot pass through the light-transmitting area.

[0076] It should be noted that, see Figure 7A and Figure 7B As shown, for example, the cleaning device can be Figure 7A A schematic diagram of a morphological structure is shown, and the cleaning device can also be Figure 7B Another schematic diagram of the morphological structure is shown. This application does not specifically limit the morphological structure of the cleaning equipment.

[0077] In other embodiments of this application, Figure 6 As shown, the cleaning device 20 further includes a detection module 203, which is connected to the controller 301;

[0078] The detection module 203 is used to detect the number of particles that block the emission light beam.

[0079] Here, the detection module 203 in the cleaning device 20 counts the number of particles that scatter the emitted light beam within the target time period to obtain the number of particles, so as to provide a dust-full reminder for the particles in the particle container based on the number of particles, and / or provide a replacement reminder for the filtration loss of the filter based on the number of particles.

[0080] In other embodiments of this application, Figure 6 As shown, the cleaning device 20 further includes a particle container 204 and a prompt module 205, wherein,

[0081] The particle container 204 is connected to the gas outlet of the conduit 201;

[0082] The prompt module 205 is connected to the controller 301;

[0083] a particle container 204 for containing particles carried in the inhaled air;

[0084] The controller 301 is further configured to control the prompt module 205 to prompt the particle storage information of the particle container 204 when determining that the quantity meets the target quantity range.

[0085] Here, when the controller 301 determines that the number of particles carried in the inhaled air contained in the particle container 204 meets the target number range, it is determined that the particle container 204 is full of particles. At this time, the controller 301 controls the prompt module 205 to prompt the user that the particles in the particle container 204 are full, and to pour out the particles in the particle container in time or replace the particle container.

[0086] Here, the reminder can be issued through audio and electronic means such as lights and sounds, or the dust full information can be sent to the electronic device used by the user such as a mobile phone, tablet computer, smart watch, etc. through a communication module to realize push reminder.

[0087] In one practicable manner, the particle detection device 10 may be disposed at the air inlet of the conduit 201 in the cleaning device 20 .

[0088] In another feasible manner, the particle detection device 10 may also be disposed at the air outlet of the conduit 201 in the cleaning device 20 .

[0089] In another feasible embodiment, the particle detection device 10 can also be set at any position between the air inlet and the air outlet of the duct 201 in the cleaning equipment 20. The present application does not impose any specific restrictions on the position of the duct 201 in the cleaning equipment 20 where the particle detection device 10 is set.

[0090] In other embodiments of this application, Figure 6 As shown, the cleaning device 20 further includes a filter 206 , which is disposed between the particle container 204 and the air suction module 202 ;

[0091] The filter 206 is used to suck the particles from the air inhalation module 202 into the particle container 204 and prevent the particles from entering the air inhalation module 202;

[0092] The controller 301 is further configured to determine that the quantity detected by the detection module 203 is greater than the target quantity, and control the prompt module 205 to prompt the filter 206 to be replaced.

[0093] Here, when the filter 206 of the cleaning device 20 causes the intake module 202 to absorb particles into the particle container 204 and prevents the particles from entering the intake module 202, the controller 301 determines that the cumulative number of particles detected by the detection module 203 is greater than the target number, and determines that the filter 206 has reached the maximum filtration loss. At this time, the controller 301 controls the prompt module 205 to prompt the replacement of the filter 206 to prevent the intake module 202 from sucking particles into the particle container 204 when the filter 206 has no filtering capacity, and then reaching the intake module 202, affecting the use of the intake module 202.

[0094] It should be noted that, referring to Figure 6 As shown, the controller 301 can be the controller 103 in the particle detection device 10, which controls the suction module 202, the detection module 203, the prompt module 205 and the filter 206 through the controller 103; the controller 301 can also be a controller set in the cleaning equipment 20, which controls the suction module 202, the detection module 203, the prompt module 205 and the filter 206 through the controller in the cleaning equipment 20. This application does not make specific restrictions.

[0095] Here, the reminder can be issued through audio and electronic means such as lights and sounds, or the filter replacement information can be sent to the user's electronic device such as a mobile phone, tablet computer, smart watch, etc. through a communication module to achieve push reminder.

[0096] From the above, it can be seen that adding a particle detection device to the cleaning equipment not only improves the accuracy of particle detection, but also can detect the particle capacity in the particle container in the cleaning equipment based on the particle detection device, and then provide dust full prompts and / or filter replacement prompts based on the particle capacity.

[0097] It should be understood that the “one embodiment” or “an embodiment” or “an embodiment of the present application” or “the aforementioned embodiment” or “some embodiments” or “some implementation methods” mentioned throughout the specification means that the specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, “in one embodiment” or “in an embodiment” or “an embodiment of the present application” or “the aforementioned embodiment” or “some embodiments” or “some implementation methods” appearing throughout the specification do not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application. The serial numbers of the embodiments of the present application mentioned above are for description only and do not represent the advantages and disadvantages of the embodiments.

[0098] In the several embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are merely schematic. For example, the division of units is merely a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling, direct coupling, or communication connection between the components shown or discussed can be through some interfaces, and the indirect coupling or communication connection of devices or units can be electrical, mechanical or other forms.

[0099] The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units; they may be located in one place or distributed across multiple network units; some or all of the units may be selected according to actual needs to achieve the purpose of the scheme of this embodiment.

[0100] In addition, all functional units in the embodiments of the present application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the above-mentioned integrated units can be implemented in the form of hardware or in the form of hardware plus software functional units.

[0101] The features disclosed in the several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0102] Those skilled in the art will understand that all or part of the steps of implementing the above-mentioned method embodiment can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, it executes the steps of the above-mentioned method embodiment; and the aforementioned storage medium includes: mobile storage devices, read-only memories (ROM), magnetic disks or optical disks, and other media that can store program codes.

[0103] Alternatively, if the above-mentioned integrated unit of the present application is implemented in the form of a software function module and sold or used as an independent product, it can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the relevant technology can be embodied in the form of a software product, which is stored in a storage medium and includes a number of instructions for a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the methods of each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as mobile storage devices, ROMs, magnetic disks, or optical disks.

[0104] It is worth noting that the drawings in the embodiments of the present application are only for illustrating the schematic positions of the various components on the terminal device and do not represent the actual positions in the terminal device. The actual positions of the various components or areas may be changed or offset accordingly according to actual conditions (for example, the structure of the terminal device), and the proportions of different parts of the terminal device in the drawings do not represent the actual proportions.

[0105] The above is merely an embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A particle detection device, characterized in that: The particle detection device is installed on the conduit of the cleaning equipment, and the particle detection device includes a light emitter, a light receiver, a controller and a light shielding sheet; wherein, The light emitter and the light receiver are both arranged on the outer wall of the conduit; The light shielding sheet is arranged on the side wall of the conduit and is perpendicular to the extension surface of the conduit; the light shielding sheet is located between the light emitter and the light receiver; when the light beam emitted by the light emitter reaches the light shielding sheet, the light-transmitting area of ​​the light shielding sheet allows the light beam to pass through, and the light-opaque area of ​​the light shielding sheet prevents the light beam from passing through; in the upper and lower spaces of the three-dimensional space, a first length of the light-transmitting area is less than a second length of a cross section of the emitted light beam in the emission direction; in the front and rear spaces of the three-dimensional space, a third length of the light-transmitting area is greater than the first length; and a ratio of the third length of the light-transmitting area to the first length is greater than 3; The controller is connected to the light emitter and the light receiver respectively, and the controller is arranged on the outside of the catheter; The controller is used to control the light emitter to emit a light beam and control the light receiver to receive a portion of the light beam that passes through the light-transmitting area of ​​the shading sheet when the air suction module of the cleaning equipment inhales air through the air inlet of the duct and causes the air to flow along the duct; and determine particle information of the particles based on the partial light beam and the emitted light beam, wherein the light beam in the emitted light beam other than the partial light beam is blocked by the particles in the air inhaled into the duct and cannot pass through the light-transmitting area.

2. The device according to claim 1, characterized in that The light emitter is parallel to a first tangent plane of the outer wall, the light receiver is parallel to a second tangent plane of the outer wall, and the light shielding sheet is parallel to the first tangent plane.

3. The device according to claim 1, characterized in that The material of the light shielding sheet includes a metal material, and the light-transmitting area is the area where the through hole on the light shielding sheet is located.

4. The device according to claim 1, characterized in that The light shielding sheet includes a flexible circuit board, and the light-transmitting area is the area where the transparent film on the flexible circuit board is located.

5. A cleaning device, characterized in that: The cleaning device comprises the particle detection device according to any one of claims 1 to 4.

6. The cleaning device according to claim 5, characterized in that The cleaning device includes a detection module, and the detection module is connected to the controller; The detection module is used to detect the number of particles that block the emission light beam.

7. The cleaning device according to claim 6, characterized in that The cleaning device further comprises a particle container and a prompt module, wherein: The particle container is connected to the air outlet of the conduit; The prompt module is connected to the controller; The particle container is used to contain the particles carried in the inhaled air; The controller is further configured to control the prompt module to prompt the particle storage information of the particle container when determining that the quantity meets the target quantity range.

8. The cleaning device according to claim 7, characterized in that The cleaning device further includes a filter disposed between the particle container and the air suction module; The filter is used to allow the air intake module to absorb the particles into the particle container and prevent the particles from entering the air intake module; The controller is further configured to determine that the quantity detected by the detection module is greater than a target quantity, and control the prompt module to prompt the user to replace the filter.

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