Manual Cigar Blanks Filling Quality Detection Method and System Based on Microwave Resonance

Abstract

The present invention provides a method and system for detecting the filling quality of hand-rolled cigar embryos based on microwave resonance. The method includes: obtaining the characteristic parameters of the microwave resonator when the embryo passes through the microwave resonator cavity, and calculating to obtain the embryo characteristic parameters; accumulating the embryo characteristic parameters of all measurement units of a single embryo to calculate the overall filling characteristic parameters, and comparing with a first set threshold to judge the overall filling situation of a single embryo and determine whether the quality is qualified; accumulating the embryo characteristic parameters of consecutive set numbers of measurement units in a single embryo to calculate the local filling characteristic parameters, and comparing with a second set threshold to judge the local filling situation of a single embryo and determine whether the quality is qualified. The present invention solves the technical problems of single detection method, poor detection effect and detection affecting the quality of cigarette sticks.

Description

Technical Field

[0001] The present invention relates to the field of cigarette quality detection, and particularly to a method and system for detecting the filling quality of hand-rolled cigar embryos based on microwave resonance. Background Art

[0002] At present, the market of hand-rolled cigars is constantly maturing, and people's demand for hand-rolled cigars is increasing. However, the current detection tools for hand-rolled cigars are relatively backward, the detection efficiency is low, which has a great impact on the quality of hand-rolled cigars, and the development of hand-rolled cigars is severely restricted. When rolling a hand-rolled cigar, according to the length, diameter, shape, etc. of the hand-rolled cigar, the filler tobacco leaves are made into a filler core, and the filler core is wrapped with a cigar wrapper to make a cigar embryo. After the cigar embryo is made, it is necessary to check the uniformity of the filler core filling and the overall filling amount. If it is found that the local or overall filling is too much or too little, it should be corrected in time.

[0003] At present, the detection of the filling quality of hand-rolled cigar embryos mainly depends on the rolling personnel to weigh by hand and press with fingers, and judge by feeling. Therefore, the judgment results of different rolling personnel are different, and the finger pressing process will cause certain damage to the structure of the cigar embryo. Other filling quality detection means are also mostly contact detection, which is easy to cause deformation of the cigar embryo, time-consuming and laborious, with poor effect, low efficiency, and affecting the quality of the cigar embryo.

[0004] The existing patent application document "Cigar cigarette homogenization detection device and detection method based on air flow fluctuation" with publication number CN114813451A includes a sample inlet device, a cigarette fixing device, a sensing device, a suction device and a sample outlet device. Among them, the cigarette fixing device includes a detection channel, a detection seat, a pushing component and a driving component. Sampling doors are respectively arranged on both sides of the detection channel. The pushing component is arranged on the detection channel at the lower part on the same side as the sampling door. The two ends of the detection channel are respectively provided with a first detection seat and a second detection seat, and the driving component can drive the second detection seat to move along the axial direction of the detection channel; the sensing device includes two air flow sensors respectively installed on the first detection seat and the second detection seat; the suction device includes a suction pipe and a suction pump. One end of the suction pipe is connected to the outer end face of the first detection seat, and the other end is connected to the suction pump. This existing technology only reads the pressure values at both ends of the cigar cigarette through the air flow sensor, and calculates the technical air flow pressure difference to obtain the suction resistance value of the cigarette. The detection method adopted by this existing technology is single, and it can only detect the suction resistance value of the cigarette, and cannot detect indexes such as the filling quality of the cigar cigarette. The applicability of this existing technology is poor.

[0005] The existing utility model patent application document "A Microwave Resonator for Density Detection and Moisture Detection" with the publication number CN215640715U includes a main body, a heating device, a temperature measuring device, a transmitter for transmitting microwave signals, and a receiver for receiving microwave signals; a channel for placing the test object and a cavity for microwave resonance are provided in the main body; the cavity is arranged around the channel; the heating end of the heating device, the detection end of the temperature measuring device, the transmitting end of the transmitter, and the receiving end of the receiver are placed in the cavity. From the detailed implementation content of this existing document, although this existing technology uses a microwave resonator, this existing technology only detects the moisture content of cigar tobacco sticks and cannot effectively detect important indicators such as the filling quality of tobacco embryos. At the same time, this existing solution involves, for example, heating devices and temperature measuring devices during detection, and there is a lack of quantitative detection implementation in the detection scheme, and the detection effect and range are restricted. At the same time, the aforementioned existing technologies all require placing the tobacco sticks at specific detection positions. At the same time, their fixing methods and detection operations will have an adverse impact on the quality of the tobacco sticks.

[0006] The existing technology has technical problems such as a single detection method, poor detection effect, and detection affecting the quality of tobacco sticks. Summary of the Invention

[0007] The technical problem to be solved by the present invention is how to solve the technical problems of a single detection method, poor detection effect, and detection affecting the quality of tobacco sticks.

[0008] The present invention solves the above technical problems by adopting the following technical solutions: The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance includes:

[0009] S1. Collect the characteristic parameters of the microwave resonator when the tobacco embryo passes through the microwave resonator, and process them to obtain the characteristic parameters of the tobacco embryo.

[0010] S2. Accumulate the characteristic parameters of the tobacco embryo of a single tobacco embryo passing through all measurement units, process them to obtain the overall filling characteristic parameters, and compare them with the first set threshold interval to judge the overall filling situation data of a single tobacco embryo. Based on this, judge whether the quality of a single tobacco embryo is qualified.

[0011] S3. Continuously process the characteristic parameters of the tobacco embryo of a set number of measurement units in a single tobacco embryo, calculate the local filling characteristic parameters, and compare them with the second set threshold interval to judge the local filling situation data of a single tobacco embryo. Based on this, judge whether the quality of a single tobacco embryo is qualified.

[0012] The present invention utilizes the fact that when the tobacco embryo passes through the microwave resonator, the shift of the resonance frequency and the change of the resonance amplitude can correspond to the filling situation of the cigar core in the tobacco embryo. Through microwave resonance detection, the filling situation of the cigar core in the tobacco embryo can be quickly obtained, and combined with the set threshold, its filling situation can be quickly and accurately detected.

[0013] In a more specific technical solution, step S1 includes:

[0014] S11. Divide each cigarette embryo into multiple measurement units, and respectively obtain the microwave resonator characteristic parameters of each measurement unit;

[0015] S12. Calculate the cigarette embryo characteristic parameters of each measurement unit respectively.

[0016] In a more specific technical solution, step S2 includes:

[0017] S21. Select qualified cigarette embryos, collect the qualified microwave resonator characteristic parameters, and calculate the qualified cigarette embryo characteristic parameters based on them;

[0018] S22. Process the qualified cigarette embryo characteristic parameters, obtain the overall filling characteristic parameters of the qualified cigarette embryos based on them, and calculate the standard deviation of the qualified cigarette embryos;

[0019] S23. Combine the processed standard deviation of the qualified cigarette embryos and the overall filling characteristic parameters of the qualified cigarette embryos, and obtain the first set threshold interval based on them.

[0020] In a more specific technical solution, process the qualified cigarette embryo characteristic parameters according to the following logic to obtain the overall filling characteristic parameters:

[0021]

[0022] In a more specific technical solution, in step S23, use the following logic to process and obtain the first upper threshold and the first lower threshold of the first set threshold interval:

[0023]

[0024]

[0025] In the formula, Q U is the first upper threshold, i is the serial number of the cigarette embryo branch, N is the total number of cigarette embryos, Q i is the overall filling characteristic parameter of each cigarette embryo, σ is the standard deviation of the overall filling characteristic parameter of each cigarette embryo, m is the multiple of the standard deviation, which is a positive number, Q L is the lower threshold, and m' is the multiple of the standard deviation, which is a positive number.

[0026] In view of the problem that the current contact detection of the filling quality of cigarette embryos is likely to damage the cigarette embryos and affect the quality of cigarette embryos, when the cigarette embryos pass through the microwave resonator, the shift of the resonance frequency and the change of the resonance amplitude can correspond to the filling situation of the core in the cigarette embryos. Through microwave resonance detection, the filling situation of the core in the cigarette embryos can be quickly obtained, and the filling situation can be quickly and accurately detected by combining the set threshold.

[0027] In a more specific technical solution, step S2 further includes:

[0028] S201. Obtain the overall filling characteristic parameters of a single cigarette embryo;

[0029] S202. Determine whether the overall filling characteristic parameters fall outside the first set threshold range;

[0030] S203. If so, determine that the overall filling quality of the single cigarette embryo is unqualified;

[0031] S204. If not, determine that the overall filling quality of the single cigarette embryo is qualified.

[0032] In a more specific technical solution, step S3 includes: Combining the standard deviation of the qualified cigarette embryos and the overall filling characteristic parameters of the qualified cigarette embryos to obtain a second set threshold range.

[0033] In a more specific technical solution, the second set threshold range is obtained by the following logic processing:

[0034]

[0035]

[0036] In the formula, Y U is the upper threshold, i is the serial number of the cigarette embryo, N is the total number of cigarette embryos, j is the serial number of the measurement unit, M is the total number of measurement units of each cigarette embryo, Y ij is the detection value of the cigarette embryo characteristic parameter of each measurement unit of each cigarette embryo, σ is the standard deviation of the detection value of the cigarette embryo characteristic parameter of each measurement unit of each cigarette embryo, m is the multiple of the standard deviation, which is a positive number, Y L is the lower threshold, and m' is the multiple of the standard deviation, which is a positive number.

[0037] After obtaining the cigarette embryo characteristic parameters of all measurement units on the whole cigarette embryo, the present invention establishes an evaluation index for overall filling and an evaluation index for local filling, calculates the overall filling characteristic parameters and local filling characteristic parameters of the cigarette embryo based on the cumulative calculation of the measurement units, and combines the indexes to judge the overall filling quality and local filling quality, improving the evaluation system for cigarette embryo quality and effectively improving the detection efficiency.

[0038] In a more specific technical solution, step S3 includes:

[0039] S31. When the local filling characteristic parameter of the current single cigarette embryo is less than the lower limit of the second set threshold range, determine that the local filling quality of the cigarette embryo is too small;

[0040] S32. When the local filling characteristic parameter of a single cigarette embryo is greater than the upper limit of the second set threshold range, determine that the local filling quality of the cigarette embryo is too large.

[0041] In a more specific technical solution, a manual cigar embryo filling quality detection system based on microwave resonance includes:

[0042] A parameter calculation module for collecting the characteristic parameters of the microwave resonator when the embryo passes through the microwave resonator cavity, and processing them to obtain the embryo characteristic parameters;

[0043] A first judgment module that accumulates the embryo characteristic parameters of a single embryo passing through all measurement units, processes them to obtain the overall filling characteristic parameters, and compares them with the first set threshold range to judge the overall filling situation data of a single embryo. Based on this, it determines whether the quality of a single embryo is qualified. The first judgment module is connected to the parameter calculation module;

[0044] A second judgment module that continuously processes the embryo characteristic parameters of a set number of measurement units in a single embryo, calculates the local filling characteristic parameters based on this, and compares them with the second set threshold range to judge the local filling situation data of a single embryo. Based on this, it determines whether the quality of a single embryo is qualified. The second judgment module is connected to the parameter calculation module.

[0045] The present invention has the following advantages compared with the prior art: When the embryo passes through the microwave resonator cavity, the present invention utilizes the correspondence between the shift of the resonance frequency, the change of the resonance amplitude and the filling situation of the core in the embryo. Through microwave resonance detection, the filling situation of the core in the embryo can be quickly obtained, and combined with the set threshold, its filling situation can be quickly and accurately detected.

[0046] Aiming at the problem that the current contact detection of the filling quality of the embryo is easy to damage the embryo and affect the quality of the embryo, when the embryo passes through the microwave resonator cavity, the present invention utilizes the correspondence between the shift of the resonance frequency, the change of the resonance amplitude and the filling situation of the core in the embryo. Through microwave resonance detection, the filling situation of the core in the embryo can be quickly obtained, and combined with the set threshold, its filling situation can be quickly and accurately detected.

[0047] After obtaining the embryo characteristic parameters of all measurement units on the whole embryo, the present invention establishes an evaluation index for overall filling and an evaluation index for local filling, calculates the overall filling characteristic parameters and local filling characteristic parameters of the embryo based on the accumulation of the measurement units, and combines the indexes to judge the overall filling quality and local filling quality, improving the evaluation system for the quality of the embryo and effectively improving the detection efficiency. The present invention solves the technical problems of single detection method, poor detection effect and detection affecting the quality of cigarette sticks in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic flow chart of a method for detecting the filling quality of a manual cigar embryo based on microwave resonance according to Embodiment 1 of the present invention;

[0049] Figure 2 Schematic diagram of the resonance curve comparison between the high-fill part and the low-fill part of the cigar embryo in Embodiment 1 of the present invention

[0050] Figure 3 Schematic connection diagram of the basic module for detecting the filling quality of hand-rolled cigar embryos based on microwave resonance in Embodiment 2 of the present invention

[0051] Figure 4 Schematic diagram of the structure of the microwave measuring instrument in Embodiment 2 of the present invention Specific embodiments

[0052] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0053] Embodiment 1

[0054] As Figure 1 shown, the present invention provides a method for detecting the filling quality of hand-rolled cigar embryos based on microwave resonance, including the following steps:

[0055] S1. Detect the qualified cigar embryos one by one;

[0056] S2. Calculate the overall filling characteristic parameters of each cigar embryo;

[0057] S3. Calculate the first upper limit threshold and the first lower limit threshold;

[0058] S4. Detect the cigar embryos to be inspected one by one;

[0059] S5. Calculate the overall filling characteristic parameters of each cigar embryo;

[0060] S6. Judge the overall filling quality of each cigar embryo;

[0061] S7. Detect the qualified cigar embryos one by one;

[0062] S8. Calculate the second upper limit threshold and the second lower limit threshold;

[0063] S9. Detect the cigar embryos to be inspected one by one;

[0064] S10. Judge the local filling quality of each cigar embryo;

[0065] In this embodiment, the microwave frequency range adopted by the present invention includes, but is not limited to, electromagnetic waves with a frequency range of 300 MHz to 300 GHz (wavelength: 1 mm to 1 m). When encountering metal, they are reflected, and metal cannot absorb or conduct them. For insulating materials such as glass, ceramics, and plastics, microwaves can pass through without consuming energy. For materials containing moisture, when microwaves pass through, part of their energy will be absorbed. In this embodiment, according to the microwave measurement principle and the design principle of the resonant cavity, it can be known that when the structural dimensions of the resonant cavity are fixed, its measurement characteristics are directly reflected as two main parameters: the shift of the resonant frequency and the change of the resonant amplitude caused by the measured sample passing through the resonant cavity. In this embodiment, based on this, the filling condition of the handmade cigar embryo is detected.

[0066] A method for detecting the filling quality of handmade cigar embryos based on microwave resonance, comprising:

[0067] Obtaining the microwave resonant cavity characteristic parameters when the cigar embryo passes through the microwave resonant cavity, and calculating to obtain the cigar embryo characteristic parameters;

[0068] Accumulating the cigar embryo characteristic parameters of all measurement units of a single cigar embryo to calculate the overall filling characteristic parameters, and comparing with the first set threshold to judge the overall filling condition of the single cigar embryo and determine whether the quality is qualified;

[0069] Accumulating the cigar embryo characteristic parameters of a continuous set number of measurement units in a single cigar embryo to calculate the local filling characteristic parameters, and comparing with the second set threshold to judge the local filling condition of the single cigar embryo and determine whether the quality is qualified.

[0070] In this embodiment, for the above method for detecting the filling quality of handmade cigar embryos based on microwave resonance, it specifically includes the following content.

[0071] As Figure 2 shown, taking a length S of 1 mm or less as the measurement unit, using the microwave resonance method to measure the microwave resonant cavity characteristic parameters such as frequency, amplitude, half-power bandwidth, and quality factor when different parts of the cigar embryo pass through the microwave resonant cavity. It is also possible to calculate cigar embryo characteristic parameters such as density based on the microwave resonant cavity characteristic parameters. Hereinafter, it is simply referred to as characteristic parameters. Taking the measurement unit as the unit, with the length as the horizontal axis and the characteristic parameters as the vertical axis, draw the cigar embryo characteristic parameter curve. In the figure, p(f0), f 0 , ω 0 , Q 0 and p(f1), f 1 , ω 1 , Q 1 are respectively the amplitude, resonant frequency, half-power bandwidth, and quality factor of the resonant cavity in the low filling and high filling parts; 1 / 2p(f0), 1 / 2p(f0), f 10 , f 20 and f 11 , f21 They are the amplitudes and frequencies of the left and right half-power points of the resonance curves for the low-fill and high-fill parts, respectively.

[0072] 1 Overall filling quality judgment of tobacco embryos

[0073] 1.1 Use the microwave resonance method to detect qualified tobacco embryos one by one

[0074] Take N (N≥10) qualified tobacco embryos for detection one by one using a microwave resonance cavity, record the detected values Y of the tobacco embryo characteristic parameters, and obtain the detected values Yij of the tobacco embryo characteristic parameters for each measurement unit of each tobacco embryo. i is the serial number of the tobacco embryo branch, a positive integer from 1 to N, and j is the serial number of the measurement unit, a positive integer from 1 to M. M is the number of measurement units included in each tobacco embryo. Assume the length of the tobacco embryo is L, and M = L / S, obtained by the ceiling method for commercial use;

[0075] Taking the measurement unit S as the unit, with the length as the horizontal axis and the characteristic parameter Y as the vertical axis, plot the tobacco embryo characteristic parameter curve;

[0076] 1.2 Calculate the overall filling characteristic parameter of each tobacco embryo

[0077] Let the overall filling characteristic parameter of each tobacco embryo be Q i , then:

[0078]

[0079] 1.3 Calculate the upper threshold Q i and the lower threshold Q U of the overall filling characteristic parameter Q of the tobacco embryo, corresponding to the first upper threshold and the first lower threshold of the first set threshold. L

[0080]

[0081]

[0082] In the formula:

[0083] Q U —— Upper threshold;

[0084] i —— Serial number of the tobacco embryo branch;

[0085] N —— Total number of tobacco embryos;

[0086] Q i —— Overall filling characteristic parameter of each tobacco embryo;

[0087] σ —— Standard deviation of the overall filling characteristic parameter of each tobacco embryo;

[0088] m —— Multiple of the standard deviation, a positive number;

[0089] Q L —— Lower limit threshold;

[0090] m′—— Multiple of standard deviation, which is a positive number.

[0091] The larger the values of m and m′, the greater the allowable fluctuation of the overall filling characteristic parameters of each cigarette blank. The values of m and m′ can be taken according to the quality requirement level.

[0092] 1.4 Detect the cigarette blanks to be inspected one by one using the microwave resonance method

[0093] Take N` cigarette blanks to be inspected and detect them one by one using a microwave resonator cavity. Record the detected values Y` of the cigarette blank characteristic parameters, and obtain the detected values Y` of the cigarette blank characteristic parameters of each measurement unit of each cigarette blank to be inspected ij , where i is the serial number of the cigarette blank, which is a positive integer from 1 to N`, and j is the serial number of the measurement unit, which is a positive integer from 1 to M. M is the number of measurement units included in each cigarette blank. Assuming the length of the cigarette blank is L, M = L / S, obtained by the commercial ceiling method;

[0094] 1.5 Calculate the overall filling characteristic parameters of each cigarette blank

[0095] Let the overall filling characteristic parameter of each cigarette blank be Q` i , then:

[0096]

[0097] 1.6 Judgment of the overall filling quality of each cigarette blank

[0098] If Q` i is greater than or equal to Q L , and less than or equal to Q U , then the overall filling quality of this cigarette blank is qualified;

[0099] If Q` i is greater than Q U , then the overall filling quality of this cigarette blank is too large and unqualified;

[0100] If Q` i is less than Q L , then the overall filling quality of this cigarette blank is too small and unqualified.

[0101] 2 Judgment of the local filling quality of cigarette blanks

[0102] 2.1 Detect the qualified cigarette blanks one by one using the microwave resonance method

[0103] Take N (N is greater than or equal to 10) qualified cigarette blanks and detect them one by one using a microwave resonator cavity. Record the detected values Y of the cigarette blank characteristic parameters, and obtain the detected values Y of the cigarette blank characteristic parameters of each measurement unit of each cigarette blankij where \(i\) is the serial number of the cigarette embryo, which is a positive integer from 1 to \(N\), and \(j\) is the serial number of the measurement unit, which is a positive integer from 1 to \(M\). \(M\) is the number of measurement units included in each cigarette embryo. Assuming the length of the cigarette embryo is \(L\), \(M = L / S\) obtained by the ceiling method in commercial use;

[0104] 2.2 Calculate the local filling characteristic parameter \(Y\) of the cigarette embryo ij The upper threshold \(Y\) U and the lower threshold \(Y\) L , the second upper threshold and the second lower threshold corresponding to the second set threshold.

[0105]

[0106]

[0107] In the formula:

[0108] \(Y\) U —— The upper threshold;

[0109] \(i\) —— The serial number of the cigarette embryo;

[0110] \(N\) —— The total number of cigarette embryos;

[0111] \(j\) —— The serial number of the measurement unit;

[0112] \(M\) —— The total number of measurement units of each cigarette embryo;

[0113] \(Y\) ij —— The detection value of the cigarette embryo characteristic parameter of each measurement unit of each cigarette embryo;

[0114] \(\sigma\) —— The standard deviation of the detection value of the cigarette embryo characteristic parameter of each measurement unit of each cigarette embryo;

[0115] \(m\) —— The multiple of the standard deviation, which is a positive number;

[0116] \(Y\) L —— The lower threshold;

[0117] \(m'\) —— The multiple of the standard deviation, which is a positive number.

[0118] The larger the values of \(m\) and \(m'\), the greater the allowable fluctuation of the overall filling characteristic parameter of each cigarette embryo. The values of \(m\) and \(m'\) can be taken according to the quality requirement level.

[0119] 2.3 Detect each cigarette embryo to be inspected by the microwave resonance method

[0120] Take \(N'\) cigarette embryos to be inspected and detect each one by a microwave resonator cavity, record the detection value \(Y'\) of the cigarette embryo characteristic parameter, and obtain the detection value \(Y'\) of the cigarette embryo characteristic parameter of each measurement unit of each cigarette embryo to be inspected ij, where \(i\) is the serial number of the cigarette embryo branch, which is a positive integer from 1 to \(N'\), \(j\) is the serial number of the measurement unit, which is a positive integer from 1 to \(M\), and \(M\) is the number of measurement units included in each cigarette embryo. Assuming the length of the cigarette embryo is \(L\), \(M = L / S\), obtained by the commercial ceiling method;

[0121] 2.4 Judgment of the local filling quality of each cigarette embryo

[0122] In actual production, it is not required that each measurement unit in the cigarette embryo is qualified, but a certain number of consecutive measurement units are allowed to be unqualified;

[0123] Let:

[0124] \(a\) is the number of consecutive measurement units allowed to be unqualified;

[0125] \(Y'_{imax}\) is the maximum value of the characteristic parameters of all measurement units of the \(i\)-th cigarette embryo;

[0126] \(Y'_{imin}\) is the minimum value of the characteristic parameters of all measurement units of the \(i\)-th cigarette embryo.

[0127] If \(Y'_{imax}\) is less than \(Y\) L , then the filling quality of all measurement units of the \(i\)-th cigarette embryo is unqualified and the filling is less;

[0128] If \(Y'_{imin}\) is greater than \(Y\) U , then the filling quality of all measurement units of the \(i\)-th cigarette embryo is unqualified and the filling is more.

[0129] Taking the measurement unit \(S\) as the length unit, with the length \(L\) as the horizontal axis and the characteristic parameter \(Y\) as the vertical axis, draw the characteristic parameter curve of all measurement units of the cigarette embryo.

[0130] Taking \(Y = Y_U\) as the upper limit boundary line and \(Y = Y\) L as the lower limit boundary line.

[0131] On the characteristic parameter curve of the measurement unit, if there are \(b\) consecutive measurement units with characteristic parameters \(\{Y'\) ij , \(Y'\) ij+1 , \(Y'\) ij+2 ┄ \(Y'\) ij+b \} are all greater than \(Y\) U , and \(b\) is greater than \(a\), then the filling quality of the cigarette embryo of these \(b\) consecutive measurement units is unqualified and the filling is more.

[0132] On the characteristic parameter curve of the measurement unit, if there are \(b\) consecutive measurement units with characteristic parameters \(\{Y'\) ij , \(Y'\) ij+1 , \(Y'\) ij+2 ┄ \(Y'\) ij+b \} are all greater than \(Y\) U , but \(b\) is less than or equal to \(a\), then the filling quality of the cigarette embryo of these \(b\) consecutive measurement units is qualified.

[0133] On the characteristic parameter curve of the measuring unit, if there are b` consecutive characteristic parameters of the measuring unit {Y` ij , Y` ij+1 , Y` ij+2 ┄Y` ij+b} are both less than Y L , and b` is greater than a, then the filling quality of the b` consecutive measurement units is unqualified and the filling is too little.

[0134] On the characteristic parameter curve of the measuring unit, if there are b` consecutive characteristic parameters of the measuring unit {Y` ij , Y` ij+1 , Y` ij+2 ┄Y` ij+b} are both less than Y L , but b` is less than or equal to a, then the filling quality of the b` consecutive measurement units is qualified.

[0135] Example 2

[0136] In another typical embodiment of the present invention, Figure 3 As shown, a handmade cigar embryo filling quality detection system based on microwave resonance is provided.

[0137] The above system includes:

[0138] The parameter calculation module 1 is configured to: obtain characteristic parameters of the microwave resonant cavity when the tobacco embryo passes through the microwave resonant cavity, and calculate and obtain the characteristic parameters of the tobacco embryo;

[0139] The first judgment module 2 is configured to: accumulate the cigarette embryo characteristic parameters of all measurement units of a single cigarette embryo to calculate the overall filling characteristic parameter, and compare it with the first set threshold value to judge the overall filling condition of the single cigarette embryo and determine whether the quality is qualified. The first judgment module is connected to the parameter calculation module;

[0140] The second judgment module 3 is configured to: accumulate the cigarette embryo characteristic parameters of a set number of measurement units in a single cigarette embryo to calculate the local filling characteristic parameters, and compare them with the second set threshold value to judge the local filling situation of the single cigarette embryo and whether the quality is qualified. The second judgment module is connected to the parameter calculation module.

[0141] like Figure 4As shown, in this embodiment, the microwave detector used in a manual cigar embryo filling quality detection system based on microwave resonance further includes: a microwave signal generator 1', a first isolator 2', a second isolator 3', a microwave resonator 4', a detection and amplification circuit 5', and a detection control and data processing system 6'. In this embodiment, the measured cigar embryo 7' enters the microwave resonator 4'. Different filling conditions of the cigar embryo 7' will cause changes in resonance frequency shift, resonance amplitude, etc. Under the control of the detection control system, the change values are sent to the data processing system through the detection and amplification circuit 5'. Through the data processing system, the filling condition of the tobacco core in the embryo can be quickly obtained, and its filling condition can be quickly and accurately detected in combination with the set threshold.

[0142] It can be understood that the working method of the above-mentioned manual cigar embryo filling quality detection system based on microwave resonance is the same as the method for detecting the filling quality of manual cigar embryos based on microwave resonance provided in Embodiment 1. For details, reference can be made to the detailed description in Embodiment 1 above, and it will not be elaborated here.

[0143] In summary, in the present invention, when the embryo passes through the microwave resonator, the shift of the resonance frequency and the change of the resonance amplitude correspond to the filling condition of the tobacco core in the embryo. Through microwave resonance detection, the filling condition of the tobacco core in the embryo can be quickly obtained, and its filling condition can be quickly and accurately detected in combination with the set threshold.

[0144] Aiming at the problem that the current contact detection of the filling quality of cigar embryos is easy to damage the embryos and affect the quality of the embryos, in the present invention, when the embryo passes through the microwave resonator, the shift of the resonance frequency and the change of the resonance amplitude correspond to the filling condition of the tobacco core in the embryo. Through microwave resonance detection, the filling condition of the tobacco core in the embryo can be quickly obtained, and its filling condition can be quickly and accurately detected in combination with the set threshold.

[0145] After obtaining the embryo characteristic parameters of all measurement units on the whole cigar embryo, the present invention establishes an evaluation index for overall filling and an evaluation index for local filling, calculates the overall filling characteristic parameters and local filling characteristic parameters of the cigar embryo based on the cumulative calculation of the measurement units, and judges the overall filling quality and local filling quality in combination with the indexes, improving the evaluation system for the quality of cigar embryos and effectively improving the detection efficiency. The present invention solves the technical problems of single detection method, poor detection effect and detection affecting the quality of cigarette sticks in the prior art.

[0146] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance, characterized in that, the method includes: S1. Collect the microwave resonance cavity characteristic parameters when the tobacco embryo passes through the microwave resonance cavity, and process to obtain the tobacco embryo characteristic parameters; S2. Accumulate the tobacco embryo characteristic parameters of a single tobacco embryo passing through all measurement units, process to obtain the overall filling characteristic parameters, and compare with the first set threshold interval to judge the overall filling situation data of a single tobacco embryo, and determine whether the quality of a single tobacco embryo is qualified; Process the qualified characteristic parameters of the tobacco embryo according to the following logic to obtain the overall filling characteristic parameters: In the formula, Yij is the detection value of the tobacco embryo characteristic parameters of each measurement unit of each tobacco embryo; Use the following logic to process to obtain the first upper threshold and the first lower threshold of the first set threshold interval: Where Q U is the first upper limit threshold, i is the serial number of the cigarette embryo branches, N is the total number of cigarette embryos, Q i is the overall filling characteristic parameter of each cigarette embryo, σ is the standard deviation of the overall filling characteristic parameter of each cigarette embryo, m is the multiple of the standard deviation, which is a positive number, Q L is the first lower limit threshold, m′ is the multiple of the standard deviation, which is a positive number; S3. Continuously process the tobacco embryo characteristic parameters of a set number of measurement units in a single tobacco embryo, calculate the local filling characteristic parameters, and compare with the second set threshold interval to judge the local filling situation data of a single tobacco embryo, and determine whether the quality of a single tobacco embryo is qualified; Process to obtain the second set threshold interval according to the following logic: Where Y U is the upper threshold value, i is the serial number of the cigarette embryo branch, N is the total number of cigarette embryo branches, j is the serial number of the measurement unit, M is the total number of measurement units for each cigarette embryo, Y ij is the detection value of the cigarette embryo characteristic parameter for each measurement unit of each cigarette embryo, σ is the standard deviation of the detection value of the cigarette embryo characteristic parameter for each measurement unit of each cigarette embryo, m is the multiple of the standard deviation, which is a positive number, Y L is the lower threshold value, and m' is the multiple of the standard deviation, which is a positive number.

2. The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance according to claim 1, characterized in that, the step S1 includes: S11. Divide each tobacco embryo into multiple measurement units, and respectively obtain the microwave resonance cavity characteristic parameters of each measurement unit; S12. Calculate the tobacco embryo characteristic parameters of each measurement unit respectively.

3. The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance according to claim 1, characterized in that, the step S2 includes: S21. Select qualified tobacco embryos, collect qualified microwave resonance cavity characteristic parameters, and calculate the qualified characteristic parameters of the tobacco embryos accordingly; S22. Process the qualified characteristic parameters of the tobacco embryo, obtain the overall filling characteristic parameters of the qualified tobacco embryo accordingly, and calculate the standard deviation of the qualified tobacco embryo; S23. Combine and process the standard deviation of the qualified tobacco embryo and the overall filling characteristic parameters of the qualified tobacco embryo to obtain the first set threshold interval accordingly.

4. The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance according to claim 1, characterized in that, the step S2 further includes: S201. Obtain the overall filling characteristic parameters of the single tobacco embryo; S202. Judge whether the overall filling characteristic parameters fall outside the first set threshold interval; S203. If so, determine that the overall filling quality of the single tobacco embryo is unqualified; S204. If not, determine that the overall filling quality of the single tobacco embryo is qualified.

5. The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance according to claim 1, characterized in that, the step S3 includes: Combine and process the standard deviation of the qualified tobacco embryo and the overall filling characteristic parameters of the qualified tobacco embryo to obtain the second set threshold interval accordingly.

6. The method for detecting the filling quality of handmade cigar tobacco embryos based on microwave resonance according to claim 1, characterized in that, the step S3 includes: S31. When the local filling characteristic parameter of the current single cigar embryo is less than the lower limit of the second set threshold range, it is determined that the local filling quality of the cigar embryo is too small; S32. When the local filling characteristic parameter of the single cigar embryo is greater than the upper limit of the second set threshold range, it is determined that the local filling quality of the cigar embryo is too large.

7. A manual cigar embryo filling quality detection system based on microwave resonance, which is used to execute the manual cigar embryo filling quality detection method based on microwave resonance according to any one of the preceding claims 1 to 6, characterized in that, it includes: a parameter calculation module, which is used to collect the microwave resonance cavity characteristic parameters when the cigar embryo passes through the microwave resonance cavity, and process them to obtain the cigar embryo characteristic parameters; a first judgment module, which accumulates the cigar embryo characteristic parameters of a single cigar embryo passing through all measurement units, processes them to obtain the overall filling characteristic parameters, compares them with the first set threshold range, judges the overall filling condition data of the single cigar embryo, and determines whether the quality of the single cigar embryo is qualified. The first judgment module is connected to the parameter calculation module; a second judgment module, which continuously processes the cigar embryo characteristic parameters of a set number of measurement units in the single cigar embryo, calculates the local filling characteristic parameters, compares them with the second set threshold range, judges the local filling condition data of the single cigar embryo, and determines whether the quality of the single cigar embryo is qualified. The second judgment module is connected to the parameter calculation module.

Images