CN112816479A - Sniffing device and method for testing same - Google Patents

Abstract

The present disclosure relates to a sniffing device and a method for checking the same, wherein the sniffing device comprises: a base (100); and a sniffing assembly (200) movably arranged on the base (100) along a first direction (x), the sniffing assembly (200) comprising a body part (10) and a scent scanning part (20), the scent scanning part (20) movably arranged on the body part (10) along a second direction (y) and a third direction (z), the third direction (z) being perpendicular to the first direction (x) in a horizontal plane, the second direction (y) being a vertical direction; wherein the odor scanning component (20) comprises a sampling component (21), and the sampling component (21) is configured to reach an air-permeable piece (43) on the target object (40) through the movement of at least one of the sniffing assembly (200) and the odor scanning component (20), and to interface with the air-permeable piece (43) for inhalation sampling.

Description

Sniffing device and method for testing same

Technical Field

The present disclosure relates to the field of security inspection technologies, and in particular, to a sniffing device and a method for inspecting the sniffing device.

Background

Conventional customs and inspection and quarantine adopt and sniff the interior smell of target object and carry out safety inspection, and the operation mode that inventor knows at present is, inserts the probe of gas sniffing instrument through artifical manual follow target object crack to gather the interior gas of target object, even need open the target object door when necessary and carry out the sampling of incasement gas. At the moment, customs staff need to open the box manually and insert the probe manually to collect the odor in the target object.

The inspection mode has low efficiency and heavy work, and the contact type inspection mode of personnel has health safety hidden trouble.

Disclosure of Invention

The embodiment of the disclosure provides a sniffing device and an inspection method thereof, which can improve the efficiency of performing smell sniffing inspection on a target object.

According to a first aspect of the present disclosure, there is provided a sniffing device comprising:

a base; and

the sniffing assembly is movably arranged on the base along a first direction and comprises a body part and a smell scanning part, the smell scanning part is movably arranged on the body part along a second direction and a third direction, the third direction is vertical to the first direction in a horizontal plane, and the second direction is a vertical direction;

wherein the odor scanning component comprises a sampling component configured to reach the breathable member on the target by movement of at least one of the sniffing assembly and the odor scanning component and to interface with the breathable member to draw a sample.

In some embodiments, the air-permeable member is disposed on the target on a sidewall facing the sniffing device, and the sampling component is configured to be aligned with the air-permeable member by at least one of movement of the sniffing assembly in a first direction and movement of the odor scanning component in a second direction, and to be moved closer to or farther from the air-permeable member by the odor scanning component in a third direction.

In some embodiments, the sniffing device further comprises:

a first adjustment mechanism configured to move the sniffing component in a first direction;

a second adjustment mechanism configured to move the scent scanning component in a second direction; and

a third adjustment mechanism configured to move the scent scanning component in a third direction.

In some embodiments, the first adjustment mechanism comprises:

a first guide structure provided between the base and the body member and extending in a first direction, each configured to guide movement of the body member; and

a first driving part configured to drive the body part to move.

In some embodiments, the body member includes a support platform, a column secured to the support platform, and a first mounting bracket, the scent scanning member being disposed on the first mounting bracket, the second adjustment mechanism including:

the second driving part is arranged on the first mounting frame;

the first rack is arranged on the upright column along the second direction; and

the first gear is connected with the output shaft of the second driving part and matched with the first rack;

wherein the second driving part is configured to drive the first mounting frame to move along the second direction relative to the upright post through the matching of the first gear and the first rack.

In some embodiments, the body member includes a support platform, a column, a first mounting bracket and a second mounting bracket, the column is fixed to the support platform, the first mounting bracket is movably disposed on the column along the second direction, the scent scanning unit is disposed on the first mounting bracket via the second mounting bracket, and the third adjustment mechanism includes:

the third driving part is arranged on the second mounting rack;

the second rack is arranged on the first mounting frame along the third direction; and

a second gear connected to an output shaft of the third driving member;

wherein the third driving part is configured to drive the second mounting frame to move along the first mounting frame along the third direction through the matching of the second gear and the second rack.

In some embodiments, the sniffing device further comprises:

the running state detection component is arranged on the base and is configured to detect the running speed of the target object and identify the front edge of the target object after the target object enters the detection area; and

and the controller is configured to obtain the spatial position of the air permeable member according to the running speed of the target object and the front edge position of the target object, and advance the sniffing assembly to the area where the air permeable member is located.

In some embodiments, the sniffing device further comprises:

the image acquisition component is arranged on the sniffing assembly and is configured to acquire an image of the breathable piece after the target stops running and the breathable piece enters the shooting area; and

a controller configured to identify a spatial position of the gas permeable member from the image to adjust the sampling component to reach the gas permeable member.

In some embodiments, the sniffing assembly further comprises a secondary positioning mechanism disposed on the odor scanning component and configured to secondarily position the sampling component after reaching the air permeable member and prior to interfacing with the air permeable member.

In some embodiments, the sampling member is positioned above the secondary positioning mechanism in the second direction.

In some embodiments, the object is a container, the container has a sidewall with a plurality of ribs spaced apart along a first direction, each rib extending along a second direction, and the ventilation member is disposed in a groove formed between adjacent ribs;

the secondary positioning mechanism is arranged on the smell scanning component in a swinging mode in the horizontal plane, is telescopic relative to the smell scanning component along the third direction, and is configured to automatically position the sampling component along the first direction by utilizing the guiding effect of two adjacent convex ribs of the air permeable component.

In some embodiments, both sidewalls of a rib are sloped, and the distance between opposing sides of adjacent ribs increases from the bottom of the groove; the secondary positioning mechanism includes:

the positioning frame comprises a first connecting part, a second connecting part and a third connecting part which are arranged in a triangular shape, the first connecting part is connected to the smell scanning component in a swinging mode in a horizontal plane, the second connecting part and the third connecting part are located on one side, away from the body component, of the first connecting part, and the distances between the first connecting part and the second connecting part and between the first connecting part and the third connecting part are equal; and

and the two guide wheels are rotatably arranged on the second connecting part and the third connecting part respectively, and are configured to realize secondary positioning of the sampling part when rolling to the bottom of the groove along the opposite side surfaces of the adjacent convex ridges.

In some embodiments, the sniffing component further comprises a secondary positioning mechanism configured to secondarily position the sampling component; the body part comprises a supporting platform, an upright post, a first mounting frame and a second mounting frame, the upright post is fixed on the supporting platform, the first mounting frame is movably arranged on the upright post along the second direction, and the second mounting frame is movably arranged on the first mounting frame along the third direction;

the odor scanning component further comprises a host part, an installation cylinder and a connecting pipeline, the host part and the installation cylinder are fixed on the second installation frame, the host part is located at the first end of the installation cylinder, the sampling component and the secondary positioning mechanism are installed at the second end of the installation cylinder, and the connecting pipeline is located in the installation cylinder and connects the sampling component with the host part.

In some embodiments, an adjusting seat is arranged in the mounting cylinder, the adjusting seat is arranged in the mounting cylinder and movably arranged along the third direction, and the secondary positioning mechanism and the sampling component are arranged on the adjusting seat.

In some embodiments, the scent scanning component further comprises:

the first elastic element is connected between the sampling component and the adjusting seat and is configured to eject the sampling component in a free state; and/or

And the second elastic element is connected between the secondary positioning mechanism and the adjusting seat and is configured to allow the secondary positioning mechanism to swing in a horizontal plane.

In some embodiments, the odor scanning component further comprises a protective cover that is sleeved outside the sampling component, and the sampling component is telescopically arranged relative to the protective cover and extends out of the protective cover when air suction sampling is required.

In some embodiments, the end of the sampling component is made of a flexible material, and the odor scanning component further comprises:

the pressure detection part is arranged on the sampling part and is configured to detect the pressure between the sampling part and the breathable part; and

a controller configured to stop the sampling part from continuing to move toward the target when the pressure detection value exceeds a preset pressure.

In some embodiments, the sniffing assembly further comprises a magnetic attraction member disposed on the odor scanning member and configured to attract the target object upon the sampling member reaching the position of the vent such that the sampling member interfaces with the vent.

In some embodiments, the sniffing assembly further comprises a cabin and an air conditioning component disposed within the cabin configured to regulate a temperature within the cabin.

According to a second aspect of the present disclosure, there is provided an inspection method for a sniffing device based on the above embodiments, including:

acquiring the spatial position of the air permeable piece;

moving the sampling component to the vent via movement of at least one of the odor scanning component and the sniffing component;

and butting the sampling component with the air permeable member, and performing air suction sampling from the air permeable member so as to enable the odor scanning component to perform gas detection.

In some embodiments, the inspection method further comprises:

detecting the running speed of the target object through a running state detection component, and identifying the front edge of the target object after the target object enters a detection area;

obtaining the space position of the air-permeable piece according to the running speed of the target object and the front edge of the target object;

the sniffing component is moved to the area where the ventilating piece is located in advance.

In some embodiments, the sniffing assembly is provided with an image acquisition component, and the advancing of the sniffing assembly to the region where the breathable member is located comprises:

the sniffing assembly is moved in advance until the breathable piece falls into the shooting area of the image acquisition component.

In some embodiments, obtaining the spatial position of the air permeable member comprises:

the ventilating piece is positioned in a proper shooting area of the image acquisition component by moving the sniffing component, and the image acquisition component is arranged on the sniffing component;

acquiring an image of the air-permeable member by an image acquisition component;

the spatial position of the air-permeable member is identified from the image.

In some embodiments, the method of inspecting further comprises, between the step of bringing the sampling member into contact with the gas permeable member and the step of interfacing with the gas permeable member:

and carrying out secondary positioning on the sampling component through a secondary positioning mechanism, wherein the secondary positioning mechanism is arranged on the odor scanning component.

Based on above-mentioned technical scheme, sniff the subassembly and establish on the base along the first direction is movably, sniff the smell scanning component among the subassembly and locate the body part along the second direction and the third direction is movably, from this, sampling component among the smell scanning component can be through sniffing the removal of subassembly and smell scanning component at least one with the ventilative piece butt joint on the target and inhale the sample. The structure can enable the sampling part to flexibly move to the position of the air permeable part, can improve the efficiency of checking the gas in the target object, can realize automatic checking, is compared with a complex mechanical arm for controlling the sampling part, simplifies the structure of a position adjusting mechanism of the sampling part, has mutually independent movement in three directions of the sampling part, avoids mutual coupling, is easy to control, can enable the sampling part to quickly and accurately reach the air permeable part, and improves the checking efficiency.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the disclosure and together with the description serve to explain the disclosure and not to limit the disclosure. In the drawings:

fig. 1 is a schematic exterior configuration view of some embodiments of sniffing devices of the present disclosure;

FIG. 2 is a schematic diagram of the internal structure of some embodiments of sniffing devices of the present disclosure;

FIG. 3 is an enlarged view of the internal structure of some embodiments of the sniffing assembly of the present disclosure;

FIG. 4 is a schematic structural view of some embodiments of secondary positioning mechanisms of the present disclosure;

FIG. 5 is a schematic view of an installation of some embodiments of the sampling component and secondary positioning mechanism of the present disclosure;

FIG. 6 is a schematic block diagram of some embodiments of sniffing devices of the present disclosure;

fig. 7 is a schematic view of the sniffing device of the present disclosure inspecting a target object.

Detailed Description

The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Aspects so defined may be combined with any other aspect or aspects unless clearly indicated to the contrary. In particular, any feature considered to be preferred or advantageous may be combined with one or more other features considered to be preferred or advantageous.

The terms "first", "second", and the like in the present disclosure are merely for convenience of description to distinguish different constituent elements having the same name, and do not denote a sequential or primary-secondary relationship.

In the description of the present disclosure, the directions or positional relationships indicated by "upper", "lower", "top", "bottom", "front", "rear", "inner" and "outer" and the like are used based on the directions or positional relationships shown in the drawings, and are only for convenience of describing the present disclosure, and do not indicate or imply that the device referred to must have a specific direction, be constructed in a specific direction and be manipulated, and thus, should not be construed as limiting the scope of the present disclosure. As shown in fig. 1, the origin of the coordinate system is o, the first direction x is located in the horizontal plane, the second direction y is the vertical direction, and the third direction z is perpendicular to the first direction x in the horizontal plane.

In the related art, a method and a device for automatically positioning a target ventilation cover and sampling gas are not available. The main problems to be solved by the automatic positioning ventilation cover are as follows: 1. the sampling head needs to be capable of accurately aligning with the target object ventilating cover; 2. the irregular shape and the pattern of the breathable cover are changed, so how the sampling head of the robot adapts to the surface of the target object and is tightly attached to the surface of the target object; 3. the surface of the target object is concave-convex, and the sampling head is difficult to be tightly attached to the ventilation cover.

To solve the above problem, as shown in fig. 1, the present disclosure provides a target object 40 sniffing device, which in some embodiments includes: a base 100 and a sniffing assembly 200. The base 100 can adopt a truss structure, the bottom of the base 100 is fastened with a cement platform through bolts, the base has a leveling structure, and the truss structure can reduce weight, has enough strength and reserves a maintenance space.

The sniffing assembly 200 is movably arranged on the base 100 along a first direction x, the sniffing assembly 200 comprises a body part 10 and a scent scanning part 20, the scent scanning part 20 is movably arranged on the body part 10 along a second direction y and a third direction z.

Wherein the odor scanning component 20 comprises a sampling component 21, the sampling component 21 is configured to reach the air permeable member 43 on the object 40 by movement of at least one of the sniffing assembly 200 and the odor scanning component 20, and to interface with the air permeable member 43 to draw an inhalation sample. After the gas collection is completed, the sampling member 21 is returned to the initial position so as not to damage the sampling member 21 when the target object 40 is removed. The object 40 may be a container, a trunk, a package, or other closed container for accommodating articles, for example, when the object 40 is a container, a closed cavity is formed between the air permeable member 43 and the object 40, and one or more air permeable holes may be formed on the air permeable member 43; when the object 40 is a luggage case, the air-permeable member 43 may be a zipper or the like on the luggage case.

For example, the odor scanning component 20 samples Volatile Organic Compounds (VOCs), and performs qualitative and quantitative analysis and detection on toxic and harmful gases, Volatile hazardous chemicals, odor of animal and plant food products, drugs with certain volatility, chemicals with easy poison control, explosives, and the like by using a mass spectrometry technology, an ion mobility technology, a gas chromatography-ion mobility spectrometry and a combination technology thereof.

In this embodiment, the sampling component can be configured to draw samples by moving at least one of the sniffing assembly and the odor scanning component into docking with the breathable member on the target 40. The structure can enable the sampling part to flexibly move to the position of the air permeable part, can improve the efficiency of checking the gas in the target object 40, can realize automatic checking, is compared with a complex mechanical arm for controlling the sampling part, simplifies the structure of a position adjusting mechanism of the sampling part, has mutually independent movement in three directions of the sampling part, avoids mutual coupling, is easy to control, can enable the sampling part to quickly and accurately reach the air permeable part, and improves the checking efficiency.

Moreover, the base 100 is fixedly arranged, compared with the mode that the sniffing assembly 200 is arranged on the movable vehicle chassis, only the parking position of the target 40 needs to be ensured during inspection, the position relation between the target and the sniffing assembly 200 is easier to ensure, the sampling component and the target 40 are prevented from being difficult to butt joint due to the parking deflection of the sniffing device, and the positioning precision of the sampling component 21 relative to the air permeable component 43 can be improved.

In some embodiments, as shown in fig. 4, the ventilation member 43 is disposed on the side wall of the object 40 near the object 40 sniffing device, for example, the ventilation member 43 may be a ventilation hood having a plurality of ventilation holes. The sampling component 21 is configured to be aligned with the air permeable member 43, i.e. to a position aligned with the air permeable member 43 in a vertical plane, by at least one of a movement of the sniffing assembly 200 in the first direction x and a movement of the odor scanning component 20 in the second direction y; and moved closer to or further from the gas permeable member 43 in the third direction z by the odor scanning component 20 to engage with the gas permeable member 43 for gas collection.

In some embodiments, the target 40 sniffing device further comprises: a first adjustment mechanism configured to move the sniffing assembly 200 in a first direction x; a second adjustment mechanism configured to move the scent scanning unit 20 in a second direction y; and a third adjustment mechanism configured to move the scent scanning unit 20 in a third direction z. Further, the object 40 sniffing device further comprises a controller 90 configured to control the first, second and third adjustment mechanisms to act.

In this embodiment, three independent adjustment mechanisms are used to respectively realize three-axis adjustment of the sampling member 21, so that the position adjustment of the sampling member 21 in three directions can be independent from each other, and the position adjustment efficiency of the sampling member 21 can be improved, thereby improving the efficiency of odor detection on the target object 40.

In some embodiments, as shown in fig. 3, the first adjustment mechanism comprises: a first guide structure and a first drive member 50. Wherein the first guiding structure is provided between the base 100 and the body part 10, and the first guiding structure extends along the first direction x, configured to provide guidance for the movement of the body part 10. A first driving part 50 configured to drive the body part 10 to move in the first direction x. For example, the first driving part 50 includes a motor and a timing belt, and can realize smooth driving, reduce noise, and also realize a large driving force.

This embodiment enables automatic position adjustment of the body part 10 in the first direction x relative to the base 100 by means of the first adjustment mechanism.

Specifically, the first guiding structure includes a first guiding rail 101 and a first guiding portion, the first guiding rail 101 is disposed on the base 100 and extends along the first direction x, the first guiding portion is disposed at the bottom of the body member 10, and the first guiding portion is engaged with the first guiding rail 101 and movably disposed along the first guiding rail 101. Further, the first guiding structure may further comprise a first supporting rail 102 extending along the first direction x and configured to provide support for the body part 10, for example, the first guiding rail 101 is disposed at a middle position of the base 100 along the third direction z, and two first supporting rails 102 are disposed at positions near two ends of the base 100 along the third direction z to provide support for the body part 10.

Alternatively, the first driving part 50 may employ a servo motor, and the first adjusting mechanism may further include a first position sensor to detect whether the body part 10 is moved to the target position, and perform feedback control on the first driving part 50 when the target position is not reached. The first driving part 50 is electrically connected to the controller 90.

This embodiment can improve the stability of the position adjustment of the body part 10 with respect to the base 100 in the first direction x, and allow the body part 10 to run smoothly when running in the first direction x.

In some embodiments, as shown in fig. 2 and 3, the body member 10 includes a supporting platform 11, a column 12 and a first mounting frame 13, the column 12 is fixed on the supporting platform 11, the scent scanning unit 20 is provided on the first mounting frame 13, and the second adjusting mechanism includes: a second driving part 16 provided on the first mounting bracket 13, for example, the second driving part 16 may be a motor; a first rack 121 provided on the column 12 along the second direction y; and a first gear 17 connected to an output shaft of the second driving member 16 and engaged with the first rack 121. Wherein the second driving member 16 is configured to drive the first mounting frame 13 to move along the second direction y relative to the upright 12 through the cooperation of the first gear 17 and the first rack 121.

This embodiment enables automatic position adjustment of the odor scanning unit 20 in the second direction y with respect to the column 12 by the second adjustment mechanism, thereby adjusting the position of the sampling unit 21 in the second direction y to be aligned with the air-permeable member. The cooperation of the first gear 17 and the first rack 121 enables smooth adjustment, and also facilitates accurate control of the amount of adjustment.

Specifically, as shown in fig. 3, the first rack 121 is disposed at a middle position of the column 12 along the third direction z, the output shaft of the second driving member 16 is perpendicular to the surface of the column 12 where the first rack 121 is disposed, and the teeth on the first rack 121 may be disposed at the side along the third direction z. In order to achieve smooth operation of the first support frame 13, the second adjusting mechanism may further include a second guiding structure, the second guiding structure may include at least one set of a second support rail 122 and a second guiding portion, the second support rail 122 and the second guiding portion are matched with each other, the second support rail 122 is disposed on the upright 12 along the second direction y, the second guiding portion is disposed on the first mounting frame 13, and the second guiding portion is movably disposed relative to the second support rail 122. For example, two sets of the second support rails 122 and the second guide portions are respectively provided at positions near both ends of the upright 12 in the third direction z.

Alternatively, the second driving part 16 may employ a servo motor, and the second adjusting mechanism may further include a second position sensor to detect whether the first mounting bracket 13 moves to the target position, and perform feedback control on the second driving part 16 when the target position is not reached. The second drive member 16 is electrically connected to the controller 90.

This embodiment can improve the stability of the scent scanning part 20 in the position adjustment in the second direction y with respect to the body part 10, and the scent scanning part 20 can smoothly run along the configuration y by supporting and guiding the movement of the first mounting frame 12 by the second guide while driving the movement of the first mounting frame 13 by the rack-and-pinion cooperation.

In some embodiments, as shown in fig. 2 and 3, the body member 10 includes a supporting platform 11, a column 12, a first mounting frame 13 and a second mounting frame 14, the column 12 is fixed on the supporting platform 11, the first mounting frame 13 is movably disposed on the column 12 along the second direction y, the scent scanning unit 20 is disposed on the first mounting frame 13 through the second mounting frame 14, and the third adjusting mechanism includes: a third drive member 18, a second rack 131 and a second gear 19. Wherein, the third driving part 18 can adopt a motor and the like and is arranged on the second mounting frame 14; a second rack 131 provided on the first mount 13 along the third direction z; the second gear 19 is connected to the output shaft of the third drive member 18.

Wherein the third driving part 18 is configured to drive the second mounting frame 14 to move along the first mounting frame 13 along the third direction z by the cooperation of the second gear 19 and the second rack 131. The third drive member 18 and the second drive member 16 have output shafts that are aligned and are both disposed along the first direction x.

This embodiment enables automatic position adjustment of the odor scanning component 20 relative to the first mounting frame 13 in the third direction z by the third adjustment mechanism, thereby adjusting the position of the sampling component 21 in the third direction z to be closer to or farther from the gas permeable member. The cooperation of the second rack 131 and the second gear 19 can achieve smooth adjustment, and it is easy to achieve precise control of the amount of adjustment.

Specifically, as shown in fig. 3, the second rack 131 is disposed at the middle position of the upright 12 in the second direction y, the output shaft of the third driving member 18 is perpendicular to the surface of the first mounting bracket 13 on which the second rack 131 is disposed, and the teeth on the second rack 131 may be disposed laterally in the second direction y.

In order to achieve smooth operation of the second mounting frame 14, the third adjusting mechanism may further include a third guiding structure, the third guiding structure may include at least one set of a third supporting rail 132 and a third guiding portion, the third supporting rail 132 is disposed on the first mounting frame 13 along the third direction z, the first mounting frame 13 may be in an inverted T-shaped structure, the third supporting rail 132 is disposed on a transverse portion of the T-shaped structure, and the second driving member 16 is disposed on a vertical portion of the T-shaped structure. The third guide portion is provided on the second mounting frame 14, and the third guide portion is movably disposed with respect to the third support rail 132. For example, two sets of the third support rails 132 and the third guide portions are respectively provided at positions near both ends of the first mounting bracket 13 in the second direction y.

Alternatively, the third driving part 18 may employ a servo motor, and the third adjustment mechanism may further include a third position sensor to detect whether the second mounting bracket 14 is moved to the target position, and to feedback-control the third driving part 18 when the target position is not reached. The third drive member 18 is electrically connected to the controller 90.

This embodiment can improve the stability of the scent scanning unit 20 when adjusting the position of the scent scanning unit with respect to the body unit 10 in the third direction z, and can support and guide the movement of the first mounting frame 12 by the second guide portion while driving the first mounting frame 13 to move by the rack and pinion engagement, so that the scent scanning unit 20 can run smoothly in the third direction z.

In some embodiments, as shown in fig. 6, the object 40 sniffing device further comprises: an operating condition detecting part 60, and a controller 90. Wherein the operation state detection part 60 is provided on the base 100 and configured to detect the operation speed of the object 40 and identify the front edge of the object 40 after the object 40 enters the detection area, for example, the operation state detection part 60 may be an area laser sensor or other sensor capable of detecting the movement state of the object 40. The object 40 may be carried by a truck.

The controller is configured to derive the spatial position of the air-permeable member 43 according to the operation speed of the object 40 and the front edge position of the object 40 when the operation speed position of the object 40 is judged to be zero, and advance the sniffing assembly 200 to the area where the air-permeable member 43 is located.

In this embodiment, since the position of the air-permeable member 43 on the same model of the object 40 is relatively fixed, the general position and the travel locus of the air-permeable member 43 can be determined according to the travel speed of the object 40. By moving the sniffing component 200 along with the movement of the air permeable member 43 in advance, the time spent on moving the sniffing component 200 to the target position after the target 40 stops running can be effectively saved, thereby improving the inspection efficiency of the target 40.

In some embodiments, as shown in fig. 6, the object 40 sniffing device further comprises: an image acquisition component 70 and a controller 90. Wherein, the image capturing component 70 is disposed on the sniffing assembly 200 and configured to capture the image of the air permeable member 43 after the object 40 stops operating and the air permeable member 43 enters the shooting area, for example, the image capturing component 70 may be a shooting camera or the like. The controller 90 is configured to identify the spatial position of the gas permeable member 43 from the image to adjust the sampling member 21 to reach the gas permeable member 43.

This embodiment can accurately position the position of the air permeable member 43 according to the acquired image after the sniffing assembly 200 moves to the area where the air permeable member 43 is located in advance along with the target object 40 and the air permeable member 43 falls into the shooting view of the image acquisition component 70, so that the sampling component 21 is more accurately butted with the air permeable member 43. Through the combination of initial positioning and accurate positioning, the efficiency of odor detection on the target object 40 can be improved, the sampling component 21 can be accurately butted with the breathable piece 43, and the success rate of gas sampling is ensured.

In some embodiments, as shown in fig. 4 and 5, the object 40 sniffing device further comprises a secondary positioning mechanism 30 disposed on the odor scanning component 20 and configured to secondarily position the sampling component 21 after the sampling component 21 reaches the air permeable member 43 and before the sampling component is docked with the air permeable member 43.

According to the embodiment, before the sampling component 21 is in butt joint with the air-permeable piece 43, the sampling component 21 can be accurately positioned again through the secondary positioning 30, the butt joint accuracy of the sampling component 21 and the air-permeable piece 43 is improved, the success rate of gas sampling is improved, and the self-adaptive function within a certain range is achieved on the stop position and the angle change of the target object 40 carried by the truck.

In some embodiments, as shown in fig. 5, the position of the sampling member 21 and the secondary positioning mechanism 30 are fixed relative to each other, and the sampling member 21 is located above the secondary positioning mechanism 30 along the second direction y. Since the air-permeable member 43 on the target is generally located at the upper right corner of the side, positioning of the secondary positioning mechanism 30 below the sampling member 21 is further facilitated.

In some embodiments, the object 40 is a container, the container has a plurality of ribs 41 spaced along the first direction x on the side wall, each rib 41 extends along the second direction y, and the air-permeable members 43 are disposed in the grooves 42 formed between adjacent ribs 41. The secondary positioning mechanism 30 is provided on the odor scanning unit 20 so as to be swingable in a horizontal plane, is extendable and retractable in the third direction z with respect to the odor scanning unit 20, and is configured to automatically position the sampling unit 21 in the first direction x by the guiding action of the two adjacent ribs 41 of the air-permeable member 43.

This embodiment can realize passive location through the cooperation of secondary positioning mechanism 30 with the bead 41 on the target object 40, can realize self-adaptation adjustment location, has saved to set up initiative guiding mechanism, can enough simplify the structure, need not to set up drive part and just can realize automatic positioning, can also adjust according to actual position and angle when target object 40 stops to further improve the location accuracy.

In some embodiments, both sidewalls of ribs 41 are beveled, and the distance between opposing sides of adjacent ribs 41 increases from the bottom of groove 42.

The secondary positioning mechanism 30 includes: a positioning frame 31 including a first connecting portion 311, a second connecting portion 312, and a third connecting portion 313 arranged in a triangle, the first connecting portion 311 being swingably connected to the smell scanning unit 20 in a horizontal plane, the second connecting portion 312 and the third connecting portion 313 being located on a side of the first connecting portion 311 away from the body member 10, and distances between the first connecting portion 311 and the second connecting portion 312 and between the first connecting portion 311 and the third connecting portion 313 being equal; and two guide wheels 32 rotatably mounted to second coupling portion 312 and third coupling portion 313, respectively, two guide wheels 32 being configured to effect a secondary positioning of sampling member 21 while rolling along opposite sides of adjacent ribs 41 to the bottom of groove 42. Wherein a space avoiding the air-permeable member 43 is formed between the second connecting portion 312 and the third connecting portion 313.

Optionally, the distance between the first connection portion 311 and the second connection portion 312 corresponds to the width of the groove bottom in the first direction x, so that the positioning is completed when both guide wheels 32 reach the groove bottom.

The secondary positioning mechanism 30 in this embodiment realizes the positioning of the sampling member 21 by rolling the guide wheels 32 along the side surfaces of the ribs 41, and when the two guide wheels 32 first contact with the two side walls of the two adjacent ribs 41 of the air-permeable member 43 and deflect during the movement of the sampling member 21 toward the air-permeable member 43, the two guide wheels automatically align, and when the two guide wheels 32 reach the groove bottom position shown in fig. 4, the two guide wheels align, so that the sampling member 21 and the air-permeable member 43 can be butted. The mechanism is simple in structure and easy to realize.

In some embodiments, as shown in fig. 5, the sniffing device further comprises a secondary positioning mechanism 30 configured to secondarily position the sampling member 21. The body member 10 comprises a supporting platform 11, a column 12, a first mounting frame 13 and a second mounting frame 14, the column 12 is fixed on the supporting platform 11, the first mounting frame 13 is movably arranged on the column 12 along the second direction y, and the second mounting frame 14 is movably arranged on the first mounting frame 13 along the third direction z.

As shown in fig. 3 and 5, the scent scanning unit 20 further includes a main body portion 15, a mounting cylinder 22, and a connecting line 26. The main body portion 15 and the mounting tube 22 are both fixed to the second mounting frame 14, the mounting tube 22 may be a tubular structure having a rectangular cross section, the main body portion 15 is located at a first end of the mounting tube 22, and the main body portion 15 may include an odor detection component and a control component. Sampling component 21 and secondary positioning mechanism 30 are all installed in the second end of installation section of thick bamboo 22, and connecting line 26 is located installation section of thick bamboo 22, and is connected sampling component 21 with host computer part 15, and connecting line 26 includes trachea and electric wire, and the trachea is used for leading-in host computer part 15 of the gas that will sample component 21 and absorb and carries out detection analysis.

This embodiment enables the main body portion 15 to be located in the area of the body member 10 by providing the mounting cylinder 22, and the sampling member 21 to be extended out of the body member 10 to facilitate gas collection at a predetermined interval from the target 40.

In some embodiments, as shown in fig. 5, an adjusting seat 24 is disposed in the mounting cylinder 22, the adjusting seat 24 is disposed in the mounting cylinder 22 and is movably disposed along the third direction z, and the secondary positioning mechanism 30 and the sampling component 21 are disposed on the adjusting seat 24. The adjusting seat 24 is driven by the fourth driving member 25 to move to adjust the positions of the secondary positioning mechanism 30 and the sampling member 21, so that after the sampling member 21 reaches the air permeable member 43, the position of the sampling member 21 in the third direction z is finely adjusted to more closely abut the sampling member 21 with the air permeable member 43, or slightly recede to adjust when the contact pressure is too large.

In some embodiments, as shown in fig. 5, the scent scanning component 20 can further include: a first elastic element 27, for example a spring, is connected between the sampling member 21 and the adjustment seat 24, configured to eject the sampling member 21 in a free state. This mechanism ensures reliable contact between the sampling member 21 and the air-permeable member 43, and prevents damage to the object by a large force when the sampling member 21 is in contact with the object 40.

In some embodiments, the scent scanning component 20 can further include: a second resilient element 28, such as a spring, is connected between the secondary positioning mechanism 30 and the adjustment block 24 and is configured to allow the secondary positioning mechanism 30 to oscillate in a horizontal plane. This structure can realize the secondary positioning mechanism 30 to beat in the horizontal plane to realize the location.

In some embodiments, as shown in fig. 5, the odor scanning component 20 further comprises a protective cover 23, which is sleeved outside the sampling component 21, and the sampling component 21 is telescopically arranged relative to the protective cover 23 and extends out of the protective cover 23 when inhalation sampling is required.

In this embodiment, the protective cover 23 is provided, so that the sampling member 21 can be retracted into the protective cover 23 when the system is not used for a long time, thereby preventing dust and rain and allowing outdoor use.

In some embodiments, the end of the sampling component 21 is made of flexible material, and the odor scanning component 20 further includes: a pressure detection member 80 provided on the sampling member 21 and configured to detect a pressure between the sampling member 21 and the gas permeable member 43; and a controller 90 configured to stop the sampling part 21 from continuing to move toward the target 40 when the pressure detection value exceeds a preset pressure.

This embodiment enables the contact pressure between the sampling member 21 and the air-permeable member 43 to be controlled within a suitable range, which not only ensures reliable docking for aspiration sampling, but also prevents the sampling member 21 from being damaged by excessive pressure.

In some embodiments, the sniffing assembly 200 further comprises a magnetic attraction member disposed on the odor scanning member 20 and configured to attract the target 40 after the sampling member 21 reaches the position of the air permeable member 43, such that the sampling member 21 interfaces with the air permeable member 43. The magnet may be an electromagnet, and the magnet attraction member is configured to attract the target 40 when energized, so that the sampling member 21 is reliably abutted with the gas permeable member 43 for gas sampling, and is disengaged from the target 40 when de-energized.

For example, the magnet attracting member may be provided above, below, or on both the left and right sides of the sampling member 21. In the case of a container, the magnetic attraction member may be located immediately below the sampling member 21, since the air permeable member 43 is generally located on the side of the container near the upper region.

According to the embodiment, the magnet adsorption part is arranged, so that the sampling part 21 and the air permeable part 43 can be reliably butted for gas sampling, and the sampling part 21 and the air permeable part 43 can be prevented from being separated due to shaking of the target object 40 in the gas sampling process.

In some embodiments, the sniffing assembly 200 further comprises a cabin 201 and an air conditioning component 202, the air conditioning component 202 being disposed within the cabin 201 and being configured to condition a temperature within the cabin 201, which may be air conditioning.

This embodiment can be when sniffing device service environment high temperature or cross the low influence equipment during operation, through air conditioning component 202 with the temperature regulation of cabin 201 to the temperature that is fit for equipment work, can improve sniffing device to service environment's adaptability.

In some embodiments, the sniffing component 200 can further comprise a sloshing sensor configured to detect a sloshing amplitude of the sampling component 21; the control unit 90 is configured to determine whether the detection value of the shake sensor exceeds a preset threshold, and if the shake amplitude exceeds the preset threshold, the sampling unit 21 is moved back to avoid damage to the sampling unit 21 or other components of the sniffing assembly 200 due to the too large shake amplitude of the target 40.

The sniffing device of the embodiment can accurately position the target breathable piece, enables the sampling component 21 to be tightly attached to the breathable piece 43, does not mix air outside the box, and provides a reliable method for sampling diffuse odor inside the box without opening the box.

Secondly, this disclosure also provides an inspection method based on the sniffing device of the above embodiments, in some embodiments, including:

step s110, acquiring a spatial position of the air-permeable member 43;

step s120 of moving the sampling member 21 to the air permeable member 43 by at least one of the scent scanning member 20 and the sniffing assembly 200;

step s130, the sampling unit 21 is abutted against the air-permeable member 43, and air suction sampling is performed from the air-permeable member 43, so that the odor scanning unit 20 performs gas detection.

In this embodiment, the spatial position of the air-permeable member 43 can be obtained after the operation of the target 40 is stopped, and air suction sampling is performed through butt joint, which is beneficial to more accurately determining the spatial position of the air-permeable member 43 on the target 40; or the spatial position of the air-permeable member 43 can be acquired during the operation of the object 40, and the sniffing assembly 200 can perform inhalation sampling during the relative still of the object 40; alternatively, a flexible joint may be provided on the sampling member 21, which allows for positional deviation by deformation of the flexible joint if the sniffing assembly 200 and the target 40 fail to remain relatively stationary.

In this embodiment, the sampling component can move to be in butt joint with the air permeable member on the target 40 to perform air suction sampling through at least one of the sniffing component and the odor scanning component, and the three-axis movement mode can enable the sampling component 21 to flexibly move to the position of the air permeable member, thereby improving the efficiency of checking the gas in the target 40, realizing automatic checking,

in some embodiments, the inspection method further comprises:

step s101, detecting the running speed of the target 40 by the running state detecting part 60, and identifying the front edge of the target 40 after the target 40 enters the detection area;

step s102, obtaining the spatial position of the air-permeable member 43 according to the running speed of the target 40 and the front edge of the target 40;

step s103, the sniffing assembly 200 is advanced to the area where the air permeable member 43 is located.

The above steps are performed by the controller 90. If the spatial position of the air-permeable member 43 is acquired after the operation of the object 40 is stopped and the air-suction sampling is performed by docking, steps s101-s103 may be performed before the operation of the object 40 is stopped.

In this embodiment, since the position of the air-permeable member 43 on the same model of the object 40 is relatively fixed, the general position and the travel locus of the air-permeable member 43 can be determined according to the travel speed of the object 40. By moving the sniffing component 200 along with the movement of the air permeable member 43 in advance, the time spent on moving the sniffing component 200 to the target position after the target 40 stops running can be effectively saved, thereby improving the inspection efficiency of the target 40.

In some embodiments, the image capturing component 70 is disposed on the sniffing assembly 200, and the step s103 of moving the sniffing assembly 200 to the area where the air permeable member 43 is located in advance includes:

step s 103', the sniffing assembly 200 is moved in advance until the air permeable member 43 falls into the photographing region of the image capturing part 70.

In some embodiments, the step s102 of acquiring the spatial position of the air-permeable member 43 includes:

step s102A, the ventilation member 43 is located in a proper shooting area of the image acquisition component 70 by the movement of the sniffing assembly 200, and the image acquisition component 70 is arranged on the sniffing assembly 200;

step s102B, acquiring an image of the air-permeable member 43 by the image acquisition part 70;

step s102C identifies the spatial position of the air-permeable member 43 from the image.

This embodiment enables to recognize the exact spatial position of the air-permeable member 43 by means of the image acquired by the image acquisition part 70 to achieve precise positioning. This embodiment combines with the last embodiment that makes sniffing subassembly 200 move to ventilative piece 43 area in advance, can be after initial positioning, and the accurate positioning that combines realizes that sampling part 21 aligns with ventilative piece 43, can enough improve the efficiency of carrying out the smell inspection to target object 40, can make sampling part 21 accurately dock with ventilative piece 43 again, guarantees the success rate of gas sampling. If the spatial position of the air-permeable member 43 is acquired after the operation of the object 40 is stopped and the air-suction sampling is performed by docking, steps s102A-s102C may be performed in a state where the operation of the object 40 is stopped, to improve the positioning accuracy.

In some embodiments, between bringing the sampling member 21 into abutment with the gas permeable member 43 and the gas permeable member 43, i.e. between step s120 and step s130, the inspection method further comprises:

and step s121, performing secondary positioning on the sampling part 21 through the secondary positioning mechanism 30, wherein the secondary positioning mechanism 30 is arranged on the odor scanning part 20.

According to the embodiment, before the sampling component 21 is in butt joint with the air-permeable piece 43, the sampling component 21 can be accurately positioned again through the secondary positioning 30, the butt joint accuracy of the sampling component 21 and the air-permeable piece 43 is improved, the success rate of gas sampling is improved, and the self-adaptive function within a certain range is achieved on the stop position and the angle change of the target object 40 carried by the truck.

In some embodiments, the sampling component 21 is telescopically arranged relative to the mounting cylinder 22, that is, the sampling component 21 is telescopically extended by the movement of the adjusting seat 24, and after the sampling component 21 reaches the air permeable member 43 in step s120, the detection method may further include:

the sampling member 21 is slightly extended outwardly to securely interface with the venting member 43. This step may be performed after step s 121.

Alternatively, the detection method may further include: when the pressure of the sample member 21 abutting the gas permeable member 43 is excessive, the sample member 21 is slightly retracted inward to maintain the proper pressure of the sample member 21 and the gas permeable member 43.

Based on the above embodiment, the controller 90 may further include a detection guide device, and a specific detection guide method thereof will be described below.

As shown in fig. 7, the operation state detecting member 60 may be an area laser sensor, and is disposed on the base 100 on a side close to the stopper lever 103.

In some embodiments, the area laser sensor may comprise a first area laser sensor and a second area laser sensor, wherein: the scanning surface of the first area laser sensor is a vertical scanning surface, is parallel to the zy plane, and is configured to acquire the side profile information of the object to be examined. The scanning plane of the second area laser sensor is a horizontal scanning plane, parallel to the xy plane, and configured to acquire the position and motion information of the target 40 relative to the sniffing assembly 200, for example, to obtain the real-time position of the target 40.

Further, as shown in fig. 7, the sniffing device of the present disclosure may further include a bar 103 and a traffic light 104, wherein: the bar 103 is configured to fall according to an instruction of the detection guide means in a case where the object 40 enters the passage; the traffic light 104 is configured to light up a red light according to an indication of the detection guide in the case where the object 40 enters the passage.

On this basis, in some embodiments, the detection guide device is configured to acquire the position information of the air-permeable member 43 of the object 40 and control the sampling component 21 of the sniffing assembly 200 to move to the position of the air-permeable member 43 in the case that the object 40 enters the channel G. Meanwhile, the detection guide may receive the image or video information photographed by the image capturing part 70.

The area laser sensor is configured to detect in a state where the target 40 enters the passage G and stops in front of the stopper rod 103, acquire detection information of the target 40, and transmit the detection information of the target 40 to the sniffing component 200. For example, in some embodiments of the present disclosure, as shown in fig. 7, the area laser sensor may be disposed on a side of the base 100 near the bar 103.

On this basis, the detection guide means is configured to determine the leading edge position information of the target object 40 from the detection information of the area laser sensor; determining the position of the air-permeable piece 43 according to the information of the leading edge position of the target 40 and the model of the target 40; and instructs the sniffing assembly 200 to move the sampling member 21 toward the permeable member 43.

In some embodiments, the detection guide device may be further configured to perform a second positioning of the air-permeable member 43 according to the picture of the air-permeable member 43 taken by the image acquisition component 70 and instruct the sniffing assembly 200 to move the sampling component 21 to the position of the air-permeable member 43. The second position may be a fine position.

In some embodiments, the detection guiding device may be further configured to take a picture of the air permeable member 43 taken by the image acquisition component 70 when the air permeable member 43 is present in the range taken by the image acquisition component 70, position the air permeable member 43 through an image recognition algorithm and a proportional-integral-derivative control algorithm, and control the sampling component 21 to be precisely positioned and attached to the air permeable member 43.

In some embodiments, the detection guiding device may be further configured to acquire a picture or a video of the air permeable member 43 taken by the image acquisition component 70, identify the air permeable member 43 in the picture or the video by using an image recognition algorithm, and obtain a pixel coordinate position of the air permeable member 43 in the picture; and calculating the current pixel error by taking the coordinate of the pixel in the center of the picture as a target position, converting the current pixel error into an actual coordinate position by adopting a proportional-integral-derivative control algorithm, and controlling the movement of the sniffing component 200.

In some embodiments, the detection guidance apparatus may be further configured to determine whether the current pixel error is less than a predetermined threshold; under the condition that the current pixel error is not less than a preset threshold value, converting the current pixel error into an actual coordinate position by adopting a proportional-integral-derivative control algorithm, controlling the sniffing assembly 200 to move, and then executing the step of acquiring the picture of the image acquisition component 70 shot by the image acquisition component 70; in the case that the current pixel error is less than the predetermined threshold, it is determined that the image capturing component 70 is aligned with the air permeable member 43, and the sniffing assembly 200 is controlled to move by the first predetermined distance so that the sampling component 21 is aligned with the air permeable member 43. Wherein the first predetermined distance is determined according to the relative position of the image acquisition part 70 and the sampling part 21; the sniffing assembly 200 is controlled to extend a second predetermined distance in the direction of the air permeable member 43 such that the sampling member 21 is attached to the air permeable member 43.

In some embodiments, the functional unit modules described above can be implemented as a general purpose Processor, a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other Programmable Logic device, discrete Gate or transistor Logic, discrete hardware components, or any suitable combination thereof for performing the functions described in this disclosure.

The sniffing device and the inspection method thereof provided by the present disclosure are described in detail above. The principles and embodiments of the present disclosure are explained herein using specific examples, which are set forth only to help understand the method and its core ideas of the present disclosure. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present disclosure without departing from the principle of the present disclosure, and such improvements and modifications also fall within the scope of the claims of the present disclosure.

Claims (24)

1. A sniffing device, comprising:

a base (100); and

a sniffing assembly (200) movably arranged on the base (100) along a first direction (x), the sniffing assembly (200) comprising a body part (10) and a scent scanning part (20), the scent scanning part (20) being movably arranged on the body part (10) along a second direction (y) and a third direction (z), the third direction (z) being perpendicular to the first direction (x) in a horizontal plane, the second direction (y) being a vertical direction;

wherein the scent scanning component (20) comprises a sampling component (21), the sampling component (21) being configured to reach an air permeable member (43) on a target (40) by movement of at least one of the sniffing assembly (200) and the scent scanning component (20) and to interface with the air permeable member (43) for inhalation sampling.

2. The sniffing device according to claim 1, wherein the air permeable member (43) is provided on a side wall of the target object (40) near the sniffing device, the sampling member (21) being configured to be aligned with the air permeable member (43) by at least one of movement of the sniffing assembly (200) in a first direction (x) and movement of the odor scanning member (20) in the second direction (y), and to be moved closer to or further away from the air permeable member (43) by the odor scanning member (20) in the third direction (z).

3. The sniffing device according to claim 1, further comprising:

a first adjustment mechanism configured to move the sniffing assembly (200) in the first direction (x);

a second adjustment mechanism configured to move the scent scanning component (20) in the second direction (y); and

a third adjustment mechanism configured to move the scent scanning component (20) in the third direction (z).

4. The sniffing device of claim 3, wherein the first adjustment mechanism comprises:

a first guiding structure provided between the base (100) and the body part (10) and extending in the first direction (x), respectively configured to provide guidance for the movement of the body part (10); and

a first drive member (50) configured to drive the body member (10) to move.

5. The sniffing device according to claim 3, wherein the body member (10) comprises a support platform (11), a stand (12) and a first mounting bracket (13), the stand (12) being fixed to the support platform (11), the scent scanning member (20) being provided on the first mounting bracket (13), the second adjustment mechanism comprising:

a second drive member (16) provided on the first mounting bracket (13);

-a first rack (121) provided on said upright (12) along said second direction (y); and

a first gear (17) connected to an output shaft of the second drive member (16) and engaged with the first rack (121);

wherein the second drive member (16) is configured to drive the first mounting (13) to move in the second direction (y) relative to the upright (12) by cooperation of the first gear (17) and the first rack (121).

6. The sniffing device according to claim 3, characterized in that the body part (10) comprises a support platform (11), a stand (12), a first mounting frame (13) and a second mounting frame (14), the stand (12) being fixed to the support platform (11), the first mounting frame (13) being movably provided to the stand (12) along the second direction (y), the scent scanning part (20) being provided on the first mounting frame (13) by means of the second mounting frame (14), the third adjustment mechanism comprising:

a third drive member (18) provided on the second mounting bracket (14);

a second rack (131) provided on the first mounting bracket (13) along the third direction (z); and

a second gear (19) connected to an output shaft of the third drive member (18);

wherein the third drive member (18) is configured to drive the second mount (14) to move along the first mount (13) in the third direction (z) by cooperation of the second gear (19) with the second rack (131).

7. The sniffing device according to claim 1, further comprising:

an operation state detection part (60) provided on the base (100), configured to detect an operation speed of the object (40), and recognize a front edge of the object (40) after the object (40) enters a detection area; and

a controller (90) configured to derive a spatial position of the air-permeable member (43) from the operating speed of the object (40) and the front edge position of the object (40) and advance the sniffing assembly (200) to the area where the air-permeable member (43) is located.

8. The sniffing device according to claim 1, further comprising:

an image acquisition component (70) arranged on the sniffing assembly (200) and configured to acquire an image of the air-permeable member (43) after the target object (40) stops running and the air-permeable member (43) enters a shooting area; and

a controller (90) configured to identify a spatial position of the gas permeable member (43) from the image to adjust the sampling component (21) to reach the gas permeable member (43).

9. The sniffing device according to claim 1, wherein the sniffing assembly (200) further comprises a secondary positioning mechanism (30) provided on the odor scanning component (20) configured to secondarily position the sampling component (21) before the sampling component (21) is docked with the air permeable member (43) after reaching the air permeable member (43).

10. Sniffing device according to claim 9,

the sampling member (21) is located above the secondary positioning mechanism (30) in the second direction (y).

11. The sniffing device according to claim 9, characterized in that the object (40) is a container, a plurality of ribs (41) are provided on the side wall of the container at intervals along the first direction (x), each rib (41) extending along the second direction (y), the air permeable members (43) being provided in grooves (42) formed between adjacent ribs (41);

the secondary positioning mechanism (30) is arranged on the smell scanning component (20) in a swinging mode in a horizontal plane, is telescopic relative to the smell scanning component (20) along the third direction (z), and is configured to automatically position the sampling component (21) along the first direction (x) by utilizing the guiding effect of two adjacent convex ribs (41) of the air permeable piece (43).

12. Sniffing device according to claim 11, characterized in that both side walls of said ribs (41) are bevelled and that the distance between opposite sides of adjacent ribs (41) increases from the bottom of said groove (42); the secondary positioning mechanism (30) includes:

a positioning frame (31) including a first connecting portion (311), a second connecting portion (312), and a third connecting portion (313) arranged in a triangle, the first connecting portion (311) being swingably connected to the scent scanning unit (20) in a horizontal plane, the second connecting portion (312) and the third connecting portion (313) being located on a side of the first connecting portion (311) away from the body member (10), and the first connecting portion (311) being equidistant from the second connecting portion (312) and the first connecting portion (311) from the third connecting portion (313); and

two guide wheels (32) rotatably mounted to the second and third coupling portions (312, 313), respectively, the two guide wheels (32) being configured to effect a secondary positioning of the sampling member (21) when rolled along opposite sides of adjacent ribs (41) to the bottom of the recess (42).

13. The sniffing device according to claim 1, characterized in that the odor scanning component (20) further comprises a secondary positioning mechanism (30) configured to secondarily position the sampling component (21); the body part (10) comprises a supporting platform (11), a stand column (12), a first mounting frame (13) and a second mounting frame (14), the stand column (12) is fixed on the supporting platform (11), the first mounting frame (13) is movably arranged on the stand column (12) along the second direction (y), and the second mounting frame (14) is movably arranged on the first mounting frame (13) along the third direction (z);

the odor scanning component (20) further comprises a host part (15), a mounting cylinder (22) and a connecting pipeline (26), wherein the host part (15) and the mounting cylinder (22) are fixed on the second mounting frame (14), the host part (15) is located at the first end of the mounting cylinder (22), the sampling component (21) and the secondary positioning mechanism (30) are mounted at the second end of the mounting cylinder (22), and the connecting pipeline (26) is located in the mounting cylinder (22) and connects the sampling component (21) with the host part (15).

14. Sniffing device according to claim 13, characterized in that an adjustment seat (24) is provided in the mounting cylinder (22), the adjustment seat (24) being provided in the mounting cylinder (22) and being movably arranged in the third direction (z), the secondary positioning mechanism (30) and the sampling member (21) being provided on the adjustment seat (24).

15. The sniffing device according to claim 14, wherein the scent scanning means (20) further comprises:

a first elastic element (27) connected between the sampling member (21) and the adjustment seat (24) and configured to eject the sampling member (21) in a free state; and/or

A second elastic element (28) connected between the secondary positioning mechanism (30) and the adjustment seat (24) and configured to allow the secondary positioning mechanism (30) to swing in a horizontal plane.

16. Sniffing device according to claim 1, characterized in that the odor scanning means (20) further comprises a protective cap (23) which is fitted over the sampling means (21), the sampling means (21) being telescopically arranged relative to the protective cap (23) and extending the protective cap (23) when an inhalation sampling is required.

17. The sniffing device according to claim 1, wherein the end of the sampling member (21) is of a flexible material, the odor scanning member (20) further comprising:

a pressure detection member (80) provided on the sampling member (21) and configured to detect a pressure between the sampling member (21) and the gas permeable member (43); and

a controller (90) configured to stop the sampling part (21) from continuing to move toward the target object (40) when the pressure detection value exceeds a preset pressure.

18. The sniffing device according to claim 1, characterized in that the sniffing assembly (200) further comprises a magnet adsorption member provided on the odor scanning member (20) configured to adsorb to the target (40) after the sampling member (21) reaches the position of the air permeable member (43) so that the sampling member (21) is docked with the air permeable member (43).

19. The sniffing device according to claim 1, wherein the sniffing assembly (200) further comprises a cabin (201) and an air-conditioning component (202), the air-conditioning component (202) being provided within the cabin (201) configured to regulate a temperature within the cabin (201).

20. An inspection method based on the sniffing device as claimed in any one of claims 1 to 19, comprising:

-acquiring the spatial position of said air permeable member (43);

-causing the sampling means (21) to reach the air permeable member (43) by movement of at least one of the odor scanning means (20) and the sniffing assembly (200);

the sampling part (21) is butted with the air permeable member (43), and air suction sampling is carried out from the air permeable member (43), so that the odor scanning part (20) carries out gas detection.

21. The method of inspecting a sniffing device according to claim 20, characterized in that the method of inspection further comprises:

detecting the running speed of the target object (40) through a running state detection part (60), and identifying the front edge of the target object (40) after the target object (40) enters a detection area;

deriving the spatial position of the air-permeable member (43) from the operating speed of the object (40) and the front edge of the object (40);

-advancing the sniffing assembly (200) to the area of the air permeable member (43).

22. Method for the inspection of a sniffing device according to claim 21, characterized in that an image acquisition means (70) is provided on the sniffing assembly (200), the advancing of the sniffing assembly (200) to the area of the air permeable member (43) comprising:

-moving the sniffing assembly (200) in advance until the air permeable member (43) falls into the photographing area of the image acquisition component (70).

23. Method for checking a sniffing device according to claim 20, characterized in that the acquisition of the spatial position of the air permeable member (43) comprises:

the air permeable piece (43) is positioned in a proper shooting area of an image acquisition part (70) through the movement of the sniffing assembly (200), and the image acquisition part (70) is arranged on the sniffing assembly (200);

-acquiring an image of the gas permeable member (43) by means of the image acquisition means (70);

the spatial position of the gas permeable member (43) is identified from the image.

24. Method of checking the sniffing device according to claim 20, characterized in that between the arrival of the sampling member (21) at the air permeable member (43) and the docking with the air permeable member (43), the method of checking further comprises:

and carrying out secondary positioning on the sampling component (21) through a secondary positioning mechanism (30), wherein the secondary positioning mechanism (30) is arranged on the smell scanning component (20).

Images