Cigarette detection device and method

Abstract

The invention provides a cigarette detection device which is used for detecting combustion indexes of cigarettes, and the detection device comprises a clamping mechanism which comprises a clamping end and a suction end, the clamping end is used for clamping a filter tip section of the cigarettes, and the suction end is provided with a connector communicated with the filter tip section; the smoking unit comprises an air suction end, the air suction end is communicated with the connector, and the smoking unit is used for smoking the cigarette; the tracking detection mechanism is arranged on at least one side of the clamping mechanism, the tracking detection mechanism comprises a detection end, the detection end can reciprocate in the length direction of the cigarette, and the detection end faces a combustion cone of the cigarette; the control system is electrically connected with the smoking unit and the tracking detection mechanism, and the control system is used for controlling the smoking unit to smoke the cigarettes and controlling the tracking detection mechanism to track and detect the combustion cone when the smoking unit smokes the cigarettes. The cigarette burning and smoking detection efficiency can be improved, and the detection accuracy is enhanced. The invention further provides a detection method.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cigarette detection, in particular to a cigarette detection device and method. BACKGROUND

[0002] Cigarette combustion is a complex physical and chemical process. Different brands and styles of cigarettes have great differences in various indicators during the combustion process. By detecting various indicators during the combustion process of cigarettes, the cigarette factory can guide the improvement of the cigarette process. The detection indicators usually include the combustion cone temperature curve, dynamic resistance, smoke temperature, combustion rate and ash length. In the prior art, the operator uses naked eye observation and manual measurement to record various detection indicators in multiple times. There are problems of inaccurate measurement and strong subjectivity, low measurement efficiency and poor accuracy. SUMMARY

[0003] The purpose of the present application is to solve the technical problems of low efficiency and poor accuracy of cigarette combustion detection. The present application provides a cigarette detection device and method, which can improve the efficiency of cigarette combustion detection and enhance the detection accuracy.

[0004] To solve the above technical problems, the embodiment of the present application provides a cigarette detection device for detecting the combustion indicators of cigarettes, which comprises:

[0005] A clamping mechanism comprising a clamping end and a suction end, the clamping end is used to clamp the filter segment of the cigarette, and the suction end is provided with an interface in communication with the filter segment;

[0006] A suction unit comprising an air suction end, the air suction end is in communication with the interface, and the suction unit is used to suck the cigarette;

[0007] A tracking detection mechanism is arranged on at least one side of the clamping mechanism, the tracking detection mechanism comprises a detection end, the detection end can reciprocate along the length direction of the cigarette, and the detection end faces the combustion cone of the cigarette;

[0008] A control system electrically connected with the suction unit and the tracking detection mechanism, the control system is used to control the suction unit to suck the cigarette, and control the tracking detection mechanism to track and detect the combustion cone when the suction unit sucks the cigarette.

[0009] Optionally, the tracking detection mechanism comprises a temperature detection mechanism and an ash holding detection mechanism, the detection end comprises a first detection end and a second detection end; the temperature detection mechanism is arranged on the first side of the clamping mechanism, the first detection end is arranged on the temperature detection mechanism, and the first detection end is used to detect the temperature of the combustion cone; the ash holding detection mechanism is arranged on the second side of the clamping mechanism, the second detection end is arranged on the ash holding detection mechanism, and the second detection end is used to detect the ash length of the cigarette.

[0010] Optionally, the temperature detection mechanism comprises:

[0011] The first walking mechanism is arranged on the first side of the clamping mechanism and extends along the length direction, and a first sliding block is arranged on the first walking mechanism and can move back and forth along the length direction;

[0012] The thermal imager is arranged on the first sliding block, and the thermal imager comprises a first detection end and a screen, the first detection end is used for detecting the temperature of the burning cone, and the screen is used for displaying the thermal image of the burning cone;

[0013] The first walking mechanism and the thermal imager are both electrically connected with the control system, the control system can control the first walking mechanism to drive the thermal imager to move, so that the thermal image of the burning cone is displayed in the center area of the screen, and the temperature of the burning cone is counted and a temperature curve is generated.

[0014] Optionally, the ash holding detection mechanism comprises:

[0015] The second walking mechanism is arranged on the second side of the clamping mechanism and extends along the length direction, and a second sliding block is arranged on the second walking mechanism and can move back and forth along the length direction;

[0016] The high-speed camera is arranged on the second sliding block, and the high-speed camera comprises a second detection end, which is used for capturing the image of the cigarette;

[0017] The second walking mechanism and the high-speed camera are both electrically connected with the control system, the control system can control the second walking mechanism to operate synchronously with the first walking mechanism, so that the second detection end keeps facing the burning cone; and control the high-speed camera to start photographing before the cigarette is ignited and stop photographing after the ash of the cigarette falls; and calculate the ash holding length of the cigarette according to the image of the cigarette.

[0018] Optionally, the first walking mechanism comprises:

[0019] A support, an upper surface of the support is provided with a through slot extending along the length direction;

[0020] A lead screw is arranged inside the support and extends along the length direction;

[0021] The first sliding block comprises a mounting portion and a connecting portion arranged in sequence from top to bottom, the mounting portion is located above the support, and the thermal imager is detachably connected with the mounting portion; the connecting portion extends to the inside of the support through the through slot, a threaded hole extending along the length direction is arranged at the lower end of the connecting portion, and the threaded hole is threadedly matched with the lead screw;

[0022] A stepping motor is connected with the lead screw at the driving end, and the stepping motor is used for driving the lead screw to rotate; the stepping motor is electrically connected with the control system;

[0023] The thermal imager can output an adjustment signal when the thermal image of the combustion cone deviates from the central area. When the control system receives the adjustment signal, it can control the stepper motor to move the thermal imager toward the direction of cigarette combustion, so that the thermal image of the combustion cone enters the central area.

[0024] Optionally, the structure of the second traveling mechanism is the same as that of the first traveling mechanism, the structure of the second slider is the same as that of the first slider, and the mounting part of the high-speed camera and the second slider are detachably connected.

[0025] Optionally, it also includes a baffle, which is disposed between the thermal imager and the cigarette, and the baffle has a strip-shaped hole extending along the length direction; along the direction perpendicular to the baffle, the projection of the cigarette falls into the strip-shaped hole; the surface of the baffle facing the first detection end is coated with a black light-absorbing coating.

[0026] Optionally, the minimum distance between the first detection end and the baffle is 3 to 8 mm, and the minimum distance between the baffle and the cigarette is 5 to 15 mm.

[0027] Optionally, it also includes an ignition mechanism disposed near the tobacco end of the cigarette, the ignition mechanism comprising:

[0028] The cylinder has its driving end facing the tobacco end;

[0029] The soldering iron is located on the drive end of the cylinder, which is used to drive the soldering iron to contact the tobacco end.

[0030] Both the cylinder and the soldering iron are electrically connected to the control system. The control system can control the soldering iron to be energized and control the cylinder to drive the soldering iron to contact the tobacco end for a preset duration.

[0031] Optionally, an infrared temperature sensor is provided above the clamping mechanism. The detection end of the infrared temperature sensor faces the connection between the filter section and the tobacco section of the cigarette. The infrared temperature sensor is electrically connected to the control system. The infrared temperature sensor can output a stop signal when the temperature at the connection is greater than or equal to a preset temperature. When the control system receives the stop signal, it can control the suction unit to stop suction and control the first and second traveling mechanisms to stop running.

[0032] Optionally, the clamping mechanism includes:

[0033] The base has a through hole that runs through it along its length. The end of the through hole away from the cigarette has an interface, and the end of the through hole near the cigarette has a cigarette-receiving hole that communicates with the interface. The cigarette-receiving hole is used to insert the cigarette.

[0034] A vent is provided on the base. The vent extends radially along the through hole. The first end of the vent is connected to the suction hole, and the second end of the vent is connected to the flame-retardant gas source.

[0035] A solenoid valve is installed between the second end of the vent and the flame-retardant gas source. The solenoid valve is electrically connected to the control system. When the control system receives a shutdown signal, it can control the solenoid valve to open for a preset time to deliver flame-retardant gas to the combustion cone.

[0036] Optionally, a suction pipe is provided between the suction unit and the interface, and a differential pressure sensor is provided on the suction pipe to detect the suction resistance of the cigarette.

[0037] Embodiments of the present invention also provide a detection method for any of the aforementioned detection devices, the detection method comprising:

[0038] The suction unit is activated to draw in the cigarette, and the suction resistance of the cigarette is detected from downstream of the interface.

[0039] Control the operation of the tracking and detection mechanism so that the detection end is facing the tobacco end of the cigarette;

[0040] Light the cigarette and control the tracking and detection mechanism to move along the direction of the cigarette's combustion, keeping the detection end facing the cigarette's combustion cone for detection.

[0041] Optionally, the action of igniting the cigarette is performed by an ignition mechanism, which includes an electric soldering iron and a cylinder; the detection method also includes controlling the electric soldering iron to be energized and preheated while starting the suction unit; when the cigarette is ignited, the cylinder drives the preheated electric soldering iron to move, so that the contact time between the electric soldering iron and the tobacco end of the cigarette reaches a preset duration.

[0042] Optionally, the detection end includes a thermal imager and a high-speed camera respectively located on both sides of the cigarette; the detection method also includes:

[0043] Before the soldering iron ignites the cigarette, control the high-speed camera to start taking images of the cigarette;

[0044] After the cigarette is lit by the soldering iron, the thermal imager is controlled to detect the temperature of the combustion cone. The thermal imager and the high-speed camera are controlled to move along the direction of the cigarette's combustion, so that the thermal image of the combustion cone is kept in the center area of ​​the screen, and the high-speed camera captures the combustion cone.

[0045] During the cigarette combustion process, a high-speed camera continuously captures images of the cigarette and determines whether the cigarette ash has fallen. If so, the camera stops capturing images and calculates the ash holding length of the cigarette based on the images captured by the high-speed camera.

[0046] Optionally, the method for determining whether cigarette ash has fallen includes: detecting whether the color of the pixel at the front end of the combustion cone in the cigarette image changes from gray to the background color; if so, it is determined that the ash has fallen.

[0047] Optionally, methods for calculating the ash holding length of cigarettes based on images captured by a high-speed camera include:

[0048] retrieve the image of the cigarette before it is lit from the high-speed camera, and calculate the length of the tobacco segment of the cigarette;

[0049] retrieve the image of the cigarette after the ash falls from the high-speed camera, and calculate the length of the remaining part of the tobacco segment of the cigarette;

[0050] calculate the difference between the length of the tobacco segment and the length of the remaining part, which is the ash retention length.

[0051] Optionally, the cigarette detection device further comprises:

[0052] acquire the temperature value at the joint between the tobacco segment and the filter segment of the cigarette;

[0053] determine whether the temperature value is greater than or equal to a preset temperature;

[0054] if yes, introduce a fire-retardant gas into the interface, and control the tracking detection mechanism and the puffing unit to stop running.

[0055] Compared with the prior art, the present application has the following beneficial effects:

[0056] The embodiment of the present application realizes automatic real-time detection of the burning cone by setting the puffing unit to puff the cigarette and controlling the tracking detection mechanism to run along the length direction of the cigarette so that the detection end always faces the burning cone. Compared with the prior art, which detects various indexes of the cigarette in multiple times by manual observation and manual measurement, the embodiment of the present application overcomes the problems of low detection efficiency and poor accuracy in the prior art, improves the detection efficiency of the cigarette, and enhances the detection accuracy. BRIEF DESCRIPTION OF DRAWINGS

[0057] Figure 1 Fig. 1 shows the overall structure view of the cigarette detection device provided by an embodiment of the present application;

[0058] Figure 2 Fig. 2 shows the cross-sectional view of the clamping mechanism provided by an embodiment of the present application;

[0059] Figure 3 Fig. 3 shows the structure view of the ignition mechanism provided by an embodiment of the present application;

[0060] Figure 4 Fig. 4 shows the structure schematic view of the temperature detection mechanism provided by an embodiment of the present application;

[0061] Figure 5 Fig. 5 shows the structure schematic view of the ash retention detection mechanism provided by an embodiment of the present application;

[0062] Figure 6 Fig. 6 shows the flowchart of the detection method provided by an embodiment of the present application.

[0063] REFERENCE SIGNS:

[0064] 1. Cigarette, 2. Clamping mechanism, 3. Clamping end, 4. Suction end, 5. Filter segment, 6. Interface, 7. Suction unit, 8. Suction end, 9. Tracking detection mechanism, 10. Temperature detection mechanism, 11. Ash holding detection mechanism, 12. First detection end, 13. Second detection end, 14. First walking mechanism, 15. Thermal imager, 16. First sliding block, 17. Second walking mechanism, 18. Second sliding block, 19. High-speed camera, 20. Bracket, 21. Screw rod, 22. Mounting portion, 23. Connecting portion, 24. Threaded hole, 25. Stepping motor, 26. Baffle, 27. Bar-shaped hole, 28. Ignition mechanism, 29. Cylinder, 30. Electric iron, 31. Infrared temperature sensor, 32. Base, 33. Vent hole, 34. Through hole, 35. Suction hole, 36. Cigarette holding hole, 37. Suction pipeline, 38. Differential pressure sensor, 39. Thermocouple, 40. Piston syringe, 41. Stepping drive mechanism. DETAILED DESCRIPTION

[0065] The present application will be described with respect to particular embodiments, and with reference to certain drawings, but the application is not limited thereto but only by the claims. The drawings described are only schematic and are non-limiting. In the drawings, the size of some of the elements can be exaggerated relative to others for illustrating the application particularly clearly. The same reference signs refer to similar elements throughout the description. While the application has been illustrated and described in detail in the drawings and the foregoing description, such illustration and description are to be considered illustrative or exemplary and not restrictive. The application is not limited to the disclosed embodiments. Other potential embodiments and variations are possible as readily apparent to those having ordinary skill in the art and depending on the particular requirements. In particular, the scope of the application is defined by the claims.

[0066] It should be noted that in the description of the application the same or similar components have the same reference numerals and letters, and thus, once a component is defined in one drawing, it is not necessary to further define and explain it in the subsequent drawings.

[0067] In the description of the present embodiments, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is usually placed, and are only for the convenience of describing the application and simplifying the description, and thus cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus cannot be understood as limiting the application.

[0068] The terms "first", "second", etc. are only used for differentiation in description, and cannot be understood as indicating or implying relative importance.

[0069] In the description of the embodiments, it should also be noted that unless specifically defined and limited otherwise, the terms "set", "connected", "connection" should be interpreted broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected; can be mechanical connection, can also be electrical connection; can be directly connected, can also be indirectly connected through an intermediate medium, can be internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments can be understood according to the specific circumstances.

[0070] In order to make the purpose, technical scheme and advantages of the present application clearer, the embodiments of the present application will be further described in detail below with reference to the drawings.

[0071] Reference Figure 1 and Figure 2 The embodiments of the present application provide a cigarette detection device for detecting the combustion index of a cigarette 1, the detection device comprising a clamping mechanism 2, a suction unit 7, a tracking detection mechanism 9 and a control system. The clamping mechanism 2 comprises a clamping end 3 and a suction end 4, the clamping end 3 is used to clamp the filter segment 5 of the cigarette 1, and the suction end 4 is provided with an interface 6 in communication with the filter segment 5. The suction unit 7 comprises an air suction end 8, the air suction end 8 is in communication with the interface 6, and the suction unit 7 is used to suck the cigarette 1. The tracking detection mechanism 9 is arranged on at least one side of the clamping mechanism 2, the tracking detection mechanism 9 comprises a detection end, the detection end can reciprocate along the length direction of the cigarette 1 (indicated by the X direction in the figure) and faces the combustion cone of the cigarette 1. The control system is electrically connected with the suction unit 7 and the tracking detection mechanism 9, and the control system is used to control the suction unit 7 to suck the cigarette 1, and control the tracking detection mechanism 9 to track and detect the combustion cone when the suction unit 7 sucks the cigarette 1. Figure 1 and Figure 2 The above technical scheme is adopted, the suction unit 7 is used to suck the cigarette 1, and the tracking detection mechanism 9 is controlled to run along the X direction of the cigarette 1, so that the detection end faces the combustion cone of the cigarette 1, thereby realizing automatic real-time detection of the combustion cone. Compared with the manual observation and manual measurement in the prior art, the embodiments of the present application automatically control the detection end to face the combustion cone of the cigarette 1, reduce the detection error caused by the difficulty in controlling the detection distance during manual detection of the combustion cone, overcome the problems of low detection efficiency and poor accuracy in the prior art, improve the detection efficiency of the cigarette 1, and enhance the detection accuracy.

[0072] The above technical scheme is adopted, the suction unit 7 is used to suck the cigarette 1, and the tracking detection mechanism 9 is controlled to run along the X direction of the cigarette 1, so that the detection end faces the combustion cone of the cigarette 1, thereby realizing automatic real-time detection of the combustion cone. Compared with the manual observation and manual measurement in the prior art, the embodiments of the present application automatically control the detection end to face the combustion cone of the cigarette 1, reduce the detection error caused by the difficulty in controlling the detection distance during manual detection of the combustion cone, overcome the problems of low detection efficiency and poor accuracy in the prior art, improve the detection efficiency of the cigarette 1, and enhance the detection accuracy.

[0073] Further, the tracking detection mechanism 9 comprises a temperature detection mechanism 10 and a ash holding detection mechanism 11, and the detection end comprises a first detection end 12 and a second detection end 13. The first detection end 12 is arranged on the temperature detection mechanism 10 and is used for detecting the temperature of the burning cone; the second detection end 13 is arranged on the ash holding detection mechanism 11 and is used for detecting the ash holding length of the cigarette 1. In some embodiments, the temperature detection mechanism 10 and the ash holding detection mechanism 11 are arranged on the same side of the clamping mechanism 2, and the tracking detection mechanism 9 further comprises a walking mechanism, the temperature detection mechanism 10 and the clamping mechanism 2 are arranged on the same walking mechanism, and the walking mechanism is used to drive the temperature detection mechanism 10 and the ash holding detection mechanism 11 to move along the direction in which the cigarette 1 is burned at the same time, so that the first detection end 12 and the second detection end 13 keep facing the burning cone of the cigarette 1, thereby improving the detection accuracy.

[0074] In some other embodiments of the present application, as shown in Figure 1 , the temperature detection mechanism 10 is arranged on the first side of the clamping mechanism 2 along the Y direction in Figure 1 , and the ash holding detection mechanism 11 is arranged on the second side of the clamping mechanism 2 along the Y direction in Figure 1 . The temperature detection mechanism 10 comprises a first walking mechanism 14 and a thermal imager 15. The first walking mechanism 14 is arranged on the first side of the clamping mechanism 2 and extends along the X direction, as shown in Figure 1 , a first sliding block 16 is arranged on the first walking mechanism 14, and the first sliding block 16 can reciprocate along the length direction. The thermal imager 15 is arranged on the first sliding block 16, and the thermal imager 15 comprises the first detection end 12 and a screen, the first detection end 12 is used for detecting the temperature of the burning cone, and the screen is used for displaying the thermal image of the burning cone. The first walking mechanism 14 and the thermal imager 15 are electrically connected with the control system, the control system can control the first walking mechanism 14 to drive the thermal imager 15 to move, so that the thermal image of the burning cone is displayed in the center area of the screen, and the temperature of the burning cone is counted and a temperature curve is generated. Specifically, refer to Figure 1 and Figure 4, the first walking mechanism 14 includes a bracket 20, a lead screw 21, a first sliding block 16 and a stepping motor 25. Among them, the upper surface of the bracket 20 is provided with a through slot extending along the X direction. The lead screw 21 is arranged inside the bracket 20 and extends along the X direction. The first sliding block 16 includes a mounting portion 22 and a connecting portion 23 arranged in sequence from top to bottom, the mounting portion 22 is located above the bracket 20, and the thermal imager 15 is detachably connected with the mounting portion 22; the connecting portion 23 extends to the inside of the bracket 20 through the through slot, and the lower end of the connecting portion 23 is provided with a threaded hole 24 extending along the X direction, and the threaded hole 24 is threadedly connected with the lead screw 21. Specifically, the control system can output a pulse signal, after the first walking mechanism 14 receives the pulse signal, the driving end thereof rotates by a fixed angle to drive the lead screw 21 to rotate and push the first sliding block 16 to move. The driving end of the stepping motor 25 is connected with the lead screw 21, and the stepping motor 25 is used to drive the lead screw 21 to rotate; the stepping motor 25 is electrically connected with the control system. The thermal imager 15 can output an adjustment signal when the thermal image of the combustion cone deviates from the central region, and the control system can control the stepping motor 25 to operate when receiving the adjustment signal to drive the thermal imager 15 to move towards the direction in which the cigarette 1 is burned, so that the thermal image of the combustion cone enters the central region, preventing the thermal image of the combustion cone from falling outside the screen, and facilitating the operator to observe the thermal image in real time.

[0075] Further, with reference to Figure 1 and Figure 5 , the ash holding detection mechanism 11 includes a second walking mechanism 17 and a high-speed camera 19. Among them, the second walking mechanism 17 is arranged on the second side of the clamping mechanism 2 and extends along the X direction, and the second walking mechanism 17 is provided with a second sliding block 18 which can move back and forth along the X direction. The high-speed camera 19 is arranged on the second sliding block 18, and the high-speed camera 19 includes a second detection end 13 for capturing the image of the cigarette 1. The second walking mechanism 17 and the high-speed camera 19 are electrically connected with the control system, and the control system can control the second walking mechanism 17 to operate synchronously with the first walking mechanism 14. So that the second detection end 13 keeps facing the combustion cone; and the control system can control the high-speed camera 19 to start shooting before the cigarette 1 is lit, and to stop shooting after the cigarette 1 drops ash; and calculate the ash holding length of the cigarette 1 according to the image of the cigarette 1. Specifically, the structure of the second walking mechanism 17 is the same as that of the first walking mechanism 14, the second sliding block 18 has the same structure as the first sliding block 16, and the high-speed camera 19 is detachably connected with the mounting portion 22 of the second sliding block 18. The second walking mechanism 17 is electrically connected with the control system, and the signal input end of the second walking mechanism 17 is electrically connected with the signal input end of the first walking mechanism 14, so that the second walking mechanism 17 can receive the pulse signal output by the control system to operate synchronously with the first walking mechanism 14, so that the high-speed camera 19 can move with the cigarette 1.

[0076] Further, as Figure 1As shown, the suction unit 7 comprises a piston syringe 40 and a step-by-step driving mechanism 41 for driving the piston syringe 40 to step-by-step inhale to simulate the process of smoking in the human mouth. Specifically, the burning-in speed of the cigarette 1, the smoke temperature, the burning cone temperature, and the dynamic resistance are all average values of step-by-step puffing detection. The burning cone temperature includes the highest temperature and the smoldering temperature during each puffing, and the smoldering temperature is the average value of the temperature of the burning cone at 15 seconds, 30 seconds and 45 seconds after each puffing. The burning rate is the ratio of the length of the tobacco segment before the cigarette 1 is ignited to the time taken for the tobacco segment to burn out. The dynamic resistance includes the maximum average resistance and the full-range average resistance, the maximum average resistance is the average value of the maximum resistance of the cigarette 1 in each puffing, and the maximum resistance represents the strongest suction resistance when the smoker is puffing. The full-range average resistance is the average value of the resistance at the preset time between each adjacent two puffs of the cigarette 1, and the full-range average resistance represents the comfort of the smoker during the process of puffing the cigarette 1.

[0077] Further, as shown in Figure 1 Further, as shown in

[0078] Further, as shown in Figure 1 and Figure 3 Further, as shown in

[0079] Further, as shown in Figure 1As shown, the clamping mechanism 2 is provided with an infrared temperature sensor 31 above, the detection end of the infrared temperature sensor 31 is directed to the connection between the filter segment 5 and the tobacco segment of the cigarette 1, the infrared temperature sensor 31 is electrically connected with the control system, the infrared temperature detector can output a stop signal when the temperature at the connection is greater than or equal to a preset temperature, the control system can control the suction unit 7 to stop suction and the first walking mechanism 14 and the second walking mechanism 17 to stop running when receiving the stop signal. When the temperature at the connection is greater than or equal to the preset temperature, it indicates that the tobacco segment has approached the burnout, at this time, stopping suction can reduce the oxygen entering the combustion cone, promote the combustion cone to extinguish, prevent the combustion cone from igniting the filter stick of the cigarette, and avoid the pollution gas generated by the burning of the filter stick from mixing with the smoke to affect the detection result.

[0080] Further, as shown in the drawings, Figure 2 The clamping mechanism 2 includes a base 32, the base 32 is provided with a through hole 34 penetrating itself along the X direction, one end of the through hole 34 away from the cigarette 1 is provided with an interface 6, and the other end of the through hole 34 close to the cigarette 1 is provided with a cigarette receiving hole 36 in communication with the interface 6. The cigarette receiving hole 36 is used for inserting the cigarette 1; the base 32 is further provided with an air passage hole 33 extending along the radial direction of the through hole 34, a first end of the air passage hole 33 is in communication with the suction hole 35, and a second end of the air passage hole 33 is in communication with a fire-retardant gas source. An electromagnetic valve is arranged between the second end of the air passage hole 33 and the fire-retardant gas source, the electromagnetic valve is electrically connected with the control system, and the control system can control the electromagnetic valve to open for a preset time length to deliver fire-retardant gas to the combustion cone when receiving the stop signal, so as to isolate the combustion cone from oxygen, promote the combustion cone to extinguish, avoid the combustion cone from igniting the filter stick to release pollution gas, and prevent the filter stick from burning to affect the detection result.

[0081] Further, as shown in the drawings, Figure 2 A temperature measuring hole is arranged on the side wall of the base 32, a thermocouple 39 is arranged in the temperature measuring hole, the temperature measuring hole is in communication with the cigarette receiving hole 36, and the detection end of the thermocouple 39 is inserted into the cigarette receiving hole 36 through the temperature measuring hole to detect the temperature of the smoke generated by the cigarette 1. The thermocouple 39 is electrically connected with the control system, the control system can receive the temperature data output by the thermocouple 39, and draw a temperature curve of the smoke temperature over time according to the temperature data.

[0082] Further, as shown in the drawings, Figure 1 A suction pipe 37 is arranged between the suction unit 7 and the interface 6, and a differential pressure sensor 38 is arranged on the suction pipe 37, the differential pressure sensor 38 is used for detecting the suction resistance of the cigarette 1. The differential pressure sensor 38 is electrically connected with the control system, and the control system can receive the suction resistance data output by the differential pressure sensor 38 and draw a change curve of the suction resistance over time according to the suction resistance data.

[0083] The embodiments of the present application also provide a detection method for the foregoing cigarette detection device, as shown in the drawings, Figure 6As shown, comprising:

[0084] Step S1: start the suction unit 7 to suck the cigarette 1, and detect the suction resistance of the cigarette 1 from the downstream of the interface 6, i.e. the static suction resistance before the cigarette 1 is lit;

[0085] Step S2: control the tracking detection mechanism 9 to operate, so that the detection end faces the tobacco end of the cigarette 1, and the tracking detection mechanism 9 can be ready for detection before the cigarette 1 is lit;

[0086] Step S3: light the cigarette 1, control the tracking detection mechanism 9 to move along the direction of the cigarette 1 burning, so that the detection end keeps facing the burning cone of the cigarette 1 for detection, and keeps a fixed distance between the detection end and the burning cone.

[0087] Further, the action of lighting the cigarette 1 is performed by the ignition mechanism 28, which includes an electric iron 30 and a cylinder 29; the detection method further comprises:

[0088] Start the suction unit 7 while controlling the electric iron 30 to be powered and preheated;

[0089] When the cigarette 1 is lit, the preheated electric iron 30 is moved by the cylinder 29, so that the electric iron 30 contacts the tobacco end of the cigarette 1 for a preset time. Specifically, the preset time is 30 seconds to make the tobacco end burn sufficiently,

[0090] Further, the detection end includes a thermal imager 15 and a high-speed camera 19 respectively arranged on both sides of the cigarette 1; as Figure 6 As shown, the detection method further comprises:

[0091] Before the electric iron 30 lights the cigarette 1, control the high-speed camera 19 to start shooting the image of the cigarette 1;

[0092] After the electric iron 30 lights the cigarette 1, control the thermal imager 15 to detect the temperature of the burning cone, and control the thermal imager 15 and the high-speed camera 19 to move along the direction of the cigarette 1 burning, so that the thermal image of the burning cone keeps in the center area of the screen, and the high-speed camera 19 shoots the burning cone;

[0093] During the burning process of the cigarette 1, the high-speed camera 19 continuously shoots the image of the cigarette 1, and judges whether the cigarette ash of the cigarette 1 falls or not, if yes, controls the high-speed camera 19 to stop shooting, and calculates the ash holding length of the cigarette 1 according to the image shot by the high-speed camera 19.

[0094] Further, the method of judging whether the cigarette ash of the cigarette 1 falls or not comprises: detecting whether the color of the pixel point at the front end of the burning cone in the image of the cigarette 1 changes from the cigarette ash color to the background color; if yes, it is judged that the cigarette ash has fallen.

[0095] Further, the method for calculating the length of the ash holding of the cigarette 1 according to the image taken by the high-speed camera 19 comprises:

[0096] The image of the cigarette 1 before being ignited is called from the high-speed camera 19, and the length of the tobacco segment of the cigarette 1 is calculated;

[0097] The image of the cigarette 1 after the ash falling is called from the high-speed camera 19, and the length of the remaining part of the tobacco segment of the cigarette 1 is calculated; the difference between the length of the tobacco segment and the length of the remaining part is the length of the ash holding.

[0098] Further, the detection method further comprises the method for extinguishing the cigarette 1, as shown in Figure 6 Specifically, as shown in

[0099] The temperature value of the joint between the tobacco segment and the filter segment 5 of the cigarette 1 is obtained;

[0100] It is judged whether the temperature value is greater than or equal to the preset temperature;

[0101] If yes, the fire-retardant gas is introduced into the interface 6, and the tracking detection mechanism 9 and the suction unit 7 are controlled to stop running.

[0102] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is intended to be illustrative only and not restrictive of the present application. Changes can be made by those skilled in the art, which fall in the spirit of the application, including simple substitutions of elements or equivalents thereof, without departing from the scope of the present application.

Claims

1. A cigarette detection device for detecting combustion indicators of cigarettes, characterized in that, The detection device comprises: a clamping mechanism comprising a clamping end and a suction end, the clamping end being used for clamping a filter segment of the cigarette, and the suction end being provided with an interface in communication with the filter segment; a suction unit comprising an air suction end in communication with the interface, the suction unit being used for sucking the cigarette; a tracking detection mechanism provided on at least one side of the clamping mechanism, the tracking detection mechanism comprising a detection end, the detection end being capable of reciprocating along a length direction of the cigarette and facing a burning cone of the cigarette; a control system electrically connected with the suction unit and the tracking detection mechanism, the control system being used for controlling the suction unit to suck the cigarette, and controlling the tracking detection mechanism to track and detect the burning cone when the suction unit sucks the cigarette.

2. The cigarette detection device of claim 1, wherein, The tracking detection mechanism comprises a temperature detection mechanism and an ash holding detection mechanism, and the detection end comprises a first detection end and a second detection end; the temperature detection mechanism is provided on a first side of the clamping mechanism, the first detection end is provided on the temperature detection mechanism, and the first detection end is used for detecting a temperature of the burning cone; the ash holding detection mechanism is provided on a second side of the clamping mechanism, the second detection end is provided on the ash holding detection mechanism, and the second detection end is used for detecting an ash holding length of the cigarette.

3. The cigarette detection device of claim 2, wherein, The temperature detection mechanism comprises: a first walking mechanism provided on the first side of the clamping mechanism and extending along the length direction, the first walking mechanism being provided with a first sliding block capable of reciprocating along the length direction; a thermal imager provided on the first sliding block, the thermal imager comprising the first detection end and a screen, the first detection end being used for detecting the temperature of the burning cone, and the screen being used for displaying a thermal image of the burning cone; the first walking mechanism and the thermal imager are both electrically connected with the control system, the control system being capable of controlling the first walking mechanism to drive the thermal imager to move, so that the thermal image of the burning cone is displayed in a central region of the screen, and the temperature of the burning cone is counted and a temperature curve is generated.

4. The cigarette detection device of claim 3, wherein, The ash holding detection mechanism comprises: a second walking mechanism provided on the second side of the clamping mechanism and extending along the length direction, the second walking mechanism being provided with a second sliding block capable of reciprocating along the length direction; a high-speed camera provided on the second sliding block, the high-speed camera comprising the second detection end, the second detection end being used for capturing an image of the cigarette; the second walking mechanism and the high-speed camera are both electrically connected with the control system, the control system being capable of controlling the second walking mechanism to synchronously operate with the first walking mechanism, so that the second detection end keeps facing the burning cone; and controlling the high-speed camera to start photographing before the cigarette is ignited and to stop photographing after the cigarette ash falls; and calculating the ash holding length of the cigarette according to the image of the cigarette.

5. The cigarette detection device of claim 4, wherein, The first walking mechanism comprises: a support provided with a through slot extending along the length direction on an upper surface of the support; A screw rod is arranged inside the bracket and extends along the length direction; The first slider comprises a mounting portion and a connecting portion arranged in sequence from top to bottom, the mounting portion is located above the bracket, and the thermal imager is detachably connected with the mounting portion; the connecting portion extends to the inside of the bracket through the through slot, the lower end of the connecting portion is provided with a threaded hole extending along the length direction, and the threaded hole is threadedly connected with the screw rod; A stepping motor is connected with the driving end of the screw rod, and the stepping motor is used to drive the screw rod to rotate; the stepping motor is electrically connected with the control system; The thermal imager can output an adjusting signal when the thermal image of the combustion cone deviates from the central area, and the control system can control the stepping motor to operate to drive the thermal imager to move towards the direction in which the cigarette is burnt, so that the thermal image of the combustion cone enters the central area.

6. The cigarette detection device of claim 5, wherein, The second walking mechanism has the same structure as the first walking mechanism, the second slider has the same structure as the first slider, and the high-speed camera is detachably connected with the mounting portion of the second slider.

7. The cigarette detection device of claim 6, wherein, A baffle is arranged between the thermal imager and the cigarette, the baffle is provided with a strip-shaped hole extending along the length direction, the projection of the cigarette falls into the strip-shaped hole in a direction perpendicular to the baffle, and the surface of the baffle facing the first detection end is coated with a black light-absorbing coating.

8. The cigarette detection device of claim 7, wherein, The minimum distance between the first detection end and the baffle is 3-8 mm, and the minimum distance between the baffle and the cigarette is 5-15 mm.

9. The cigarette detection device of claim 8, wherein, An ignition mechanism is arranged near the tobacco end of the cigarette, and the ignition mechanism comprises: A cylinder, the driving end of which faces the tobacco end; An electric soldering iron is arranged on the driving end of the cylinder, and the cylinder is used to drive the electric soldering iron to contact the tobacco end; The cylinder and the electric soldering iron are electrically connected with the control system, the control system can control the electric soldering iron to be electrified and control the cylinder to drive the electric soldering iron to contact the tobacco end for a preset time length.

10. The cigarette detection device of claim 9, wherein, An infrared temperature sensor is arranged above the clamping mechanism, the detection end of the infrared temperature sensor faces the connection between the filter segment and the tobacco segment of the cigarette, the infrared temperature sensor is electrically connected with the control system, the infrared temperature sensor can output a shutdown signal when the temperature at the connection is greater than or equal to a preset temperature, and the control system can control the suction unit to stop suction and control the first walking mechanism and the second walking mechanism to stop running when the shutdown signal is received.

11. The cigarette detection device of claim 10, wherein, The clamping mechanism comprises: A base is provided with a through hole extending through itself along the length direction, one end of the through hole away from the cigarette is provided with the interface, and the other end of the through hole near the cigarette is provided with a tobacco receiving hole connected with the interface; the tobacco receiving hole is used to insert the cigarette; An air hole is arranged on the base, the air hole extends along the radial direction of the through hole, a first end of the air hole is connected with the suction hole, and a second end of the air hole is connected with a fire-retardant gas source. A solenoid valve is arranged between the second end of the vent hole and the fire-retardant gas source, and the solenoid valve is electrically connected to the control system, which can control the solenoid valve to open for a preset time length to deliver fire-retardant gas to the combustion cone when the shutdown signal is received.

12. The cigarette detection device of claim 11, wherein, A suction pipe is arranged between the suction unit and the interface, and a differential pressure sensor is arranged on the suction pipe to detect the suction resistance of the cigarette.

13. A detection method for the cigarette detection device according to any one of claims 1 to 12, characterized by, The detection method comprises: starting the suction unit to suck the cigarette and detecting the suction resistance of the cigarette downstream of the interface; controlling the tracking detection mechanism to operate so that the detection end faces the tobacco end of the cigarette; igniting the cigarette and controlling the tracking detection mechanism to move in the direction of the combustion of the cigarette so that the detection end faces the combustion cone of the cigarette for detection.

14. The method of claim 13, wherein the detecting is performed by a method selected from the group consisting of mass spectrometry, nuclear magnetic resonance, and chromatography. The ignition mechanism comprises an electric iron and a gas cylinder; the detection method further comprises starting the suction unit and controlling the electric iron to be powered and preheated, and after the preheating is completed, controlling the gas cylinder to move the electric iron so that the electric iron contacts the tobacco end of the cigarette for a preset time length to ignite the cigarette.

15. The method of claim 14, wherein the detecting is performed by a method selected from the group consisting of mass spectrometry, nuclear magnetic resonance, and chromatography. The detection end comprises a thermal imager and a high-speed camera arranged on both sides of the cigarette respectively; the detection method further comprises: controlling the high-speed camera to capture the image of the cigarette before the cigarette is ignited; controlling the thermal imager to detect the temperature of the combustion cone after the cigarette is ignited, and controlling the thermal imager and the high-speed camera to move in the direction of the combustion of the cigarette so that the thermal image of the combustion cone is kept in the center area of the screen of the thermal imager and the high-speed camera captures the combustion cone; during the combustion of the cigarette, the high-speed camera continuously captures the image of the cigarette and judges whether the cigarette ash has fallen, if so, controls the high-speed camera to stop capturing, and calculates the ash retention length of the cigarette according to the image captured by the high-speed camera.

16. The detection method as described in claim 15, characterized in that, The method for judging whether the cigarette ash has fallen comprises: detecting whether the color of the pixel point at the front end of the combustion cone in the image of the cigarette changes from ash color to background color; if so, it is judged that the ash has fallen.

17. The detection method as described in claim 16, characterized in that, The method for calculating the ash retention length of the cigarette according to the image captured by the high-speed camera comprises: calling the image of the cigarette before being ignited from the high-speed camera to calculate the length of the tobacco segment of the cigarette; calling the image of the cigarette after the ash falls from the high-speed camera to calculate the length of the remaining part of the tobacco segment of the cigarette; calculating the difference between the lengths of the tobacco segment and the remaining part, which is the ash retention length.

18. The detection method as described in claim 17, characterized in that, It further comprises: obtaining the temperature value at the connection between the tobacco segment and the filter segment of the cigarette; judging whether the temperature value is greater than or equal to a preset temperature; if so, delivering fire-retardant gas into the interface; and controlling the tracking detection mechanism and the suction unit to stop operating.

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