阅读说明：本技术 在线式烟支通风度检测系统 (Online cigarette ventilation degree detection system ) 是由 梅林� 梅笑雨 于 2021-09-06 设计创作，主要内容包括：本发明公开了一种在线式烟支通风度检测系统,首次在烟支通风度检测和控制过程中,引入了统计学参数,并将其用于对打孔机的聚焦装置的焦距进行调节,所获得的平均值评估参数应用于对打孔机的激光能量进行调节控制。如此的设置,从而避免了因单支烟支通风度检测值的正常波动对控制系统稳定性造成的不良影响,同样避免了因烟支拨转的摆动、激光能量的波动所造成单支烟支通风度检测值的波动对控制系统稳定性造成的不良影响,实现有效、稳定、自动化的闭环调节和控制。(The invention discloses an online cigarette ventilation detection system, which introduces statistical parameters in the cigarette ventilation detection and control process for the first time, and uses the statistical parameters to adjust the focal length of a focusing device of a puncher, and the obtained average evaluation parameters are applied to adjusting and controlling the laser energy of the puncher. The arrangement is adopted, so that the adverse effect on the stability of the control system caused by the normal fluctuation of the ventilation degree detection value of the single cigarette is avoided, the adverse effect on the stability of the control system caused by the fluctuation of the ventilation degree detection value of the single cigarette caused by the fluctuation of the dialing of the cigarette and the fluctuation of laser energy is also avoided, and effective, stable and automatic closed-loop regulation and control are realized.)

1. The utility model provides an online cigarette ventilation degree detecting system which characterized in that: the method comprises the following steps:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the cigarette rejecting unit is used for rejecting cigarettes with unqualified ventilation detection data according to an electric signal sent by the online cigarette ventilation detection device or the online laser drilling device;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the on-line cigarette ventilation degree detection device and the cigarette rejection unit are respectively connected with the on-line laser drilling device through data line communication to transmit response clock/response pulse and data.

2. An online cigarette ventilation degree control system which characterized in that: the method comprises the following steps:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the on-line cigarette ventilation degree detection device is connected with the on-line laser drilling device through data line communication to transmit response clock/response pulse and detection data.

3. The online cigarette ventilation degree detection system according to claim 1 or 2, characterized in that: the synchronous signal is formed by machine clock pulse sent by a cigarette making machine, cigarette in-place pulse sent by a control unit of a laser drilling device, or cigarette in-place pulse detected by an independent sensor.

4. The online cigarette ventilation degree detection system according to claim 1, characterized in that: the ventilation degree detection device comprises a ventilation degree detection device, or a ventilation degree detection device formed by a ventilation degree unit and an air-tightness air leakage detection unit, or a ventilation degree detection device formed by a ventilation degree unit and a suction resistance detection unit, or a ventilation degree detection device formed by a ventilation degree unit, an air-tightness air leakage unit and a suction resistance detection unit.

5. The online cigarette ventilation degree detection system according to claim 1 or 3, characterized in that: the on-line cigarette ventilation degree detection device also comprises a matched operation control unit which calculates the ventilation degree and evaluation parameters through a built-in algorithm; the evaluation parameters include the results and data of statistical and alignment operations as recited in claim 9.

6. The online cigarette ventilation degree detection system according to claim 1, characterized in that: the rejecting detection sensor is positioned at the downstream of the rejecting unit and sends pulse signals to detect gaps of cigarette conveying flows formed after the cigarettes are rejected.

7. The online cigarette ventilation degree detection system according to claim 1, characterized in that: a cigarette ventilation degree detection device and online laser perforating device between communication data line include: the data bus is responsible for transmitting ventilation degree and evaluation parameters, the response clock transmission line transmits response pulses between the operation control unit and the control unit of the punching device, and the data bus comprises a data bus of a TCP/IP (transmission control protocol/Internet protocol) and CAN (controller area network) bus protocol of an operation network protocol.

8. The online cigarette ventilation degree detection system according to claim 7, characterized in that: the response pulse comprises a response clock pulse sequence or a single response pulse; when: the operation control unit sends a response clock pulse sequence or a single response pulse, and after receiving the response pulse, the control unit starts to receive the ventilation degree and the evaluation parameters through the bus and carries out corresponding operation; when: when the operation control unit does not send out the response clock pulse, the control unit does not receive the bus data, thereby reducing the workload of the control unit.

9. An online cigarette ventilation evaluation parameter calculation method is characterized by comprising the following steps: which comprises the following steps:

and (3) statistical operation:

GVi the ventilation degree of the current cigarette, including the ventilation degree of all cigarettes passing through the measuring device except the value of the removed cigarette due to air leakage:

GVi average value = ∑ (GV 1+ - + DVn)/n, namely the average value after the ventilation values of the front n cigarettes are summed, and calculating standard deviation SD and coefficient of variation CV% (namely relative deviation);

and (3) comparison operation:

GVi absolute value of instantaneous deviation between ventilation degree of current cigarette and GV set value, including ventilation degree of all cigarettes passing through measuring device:

GVi instantaneous offset = | G Vi-GV setting |;

GVi deviation V between mean and GV setting:

GVi mean deviation = (GVi mean-GV set) = V;

wherein: n: setting the average value of the sampled cigarettes; GVi: a current ventilation degree detection value; GV setting: setting the ventilation degree of the cigarettes; mean value of GV: average value of n cigarette ventilation GVi; p: a set number of allowable instantaneous deviations; p2: adjusting the stable area; SD, standard deviation, and allowable set value SD; CV: coefficient of variation, allowed set value is cv; t0: the puncture time adjusts the cardinality.

10. The method for automatically calculating the ventilation degree of the online cigarette according to claim 5, wherein the method comprises the following steps: p is set to be 2.5; p2 was set to 1.5; sd is set to 0.5-2.5 or 1.5; cv was set at 4% -15% or 10%; t0 is set to 0.2-0.5 microseconds.

11. An online cigarette ventilation degree detection method is characterized by comprising the following steps: when the ventilation degree detection device is only provided with the ventilation degree unit, the following method is selected:

or providing constant air pressure at the cigarette ignition end, forming constant air flow through the microporous nozzle, arranging a pressure sensor P2 at the filter tip to detect residual air pressure, and calculating to obtain the numerical value of cigarette suction resistance and cigarette ventilation = K1 × P2, wherein K1 is an adjusting coefficient and is determined according to different cigarette processes and materials;

or pressure sensors P1 and P2 are arranged at the cigarette ignition end and the filter tip end at the same time, and the numerical value = K2 (P1-P2) of the cigarette suction resistance and the cigarette ventilation degree is formed after calculation, wherein K2 is an adjusting coefficient and is determined according to different cigarette processes and materials;

the micropore nozzle is arranged between the air outlet end of the constant-pressure air supply and the air inlet end of the detection unit, and the constant-pressure air flow is converted into the constant-flow air flow by utilizing the large air resistance formed by micropores, so that the fluctuation of detection data caused by cigarette switching of the air supply air flow is reduced, and the diameter of each micropore is 0.12-2 mm.

12. An online cigarette ventilation degree detection method is characterized by comprising the following steps: the ventilation degree detection device is formed by combining a ventilation degree detection unit and an air tightness air leakage detection unit, the cigarette ventilation degree detection unit is used for detecting the air tightness air leakage of cigarettes while detecting the ventilation degree of the cigarettes, and the numerical value of the ventilation degree is corrected by using the numerical value of the air tightness air leakage, so that the accuracy of the numerical value of the cigarette ventilation degree detection is improved;

at the moment, if the cigarette air tightness and air leakage detection unit finds that the cigarette has air tightness and air leakage, the operation control unit sends out a corresponding rejection signal of the cigarette, and after the cigarette is rejected, the obtained cigarette ventilation degree data is deleted without entering into statistical operation, so that the influence of the deviation ventilation degree of the air-leaking cigarette on the normal cigarette data is reduced.

13. An online cigarette ventilation degree detection method is characterized by comprising the following steps: the ventilation degree detection device is formed by combining a ventilation degree detection unit and a suction resistance detection unit, and is characterized in that the suction resistance detection unit is used for detecting the open type suction resistance PD value of a cigarette while the cigarette ventilation degree detection unit detects the ventilation degree of the cigarette, and the PD value suction resistance value is used for correcting the ventilation degree value, so that the accuracy of the cigarette ventilation degree detection value is improved;

the cigarette ventilation detection value = K3 (P1-P2-PD), wherein K3 is an adjusting coefficient and is determined according to different cigarette processes and materials.

14. An online cigarette automatic eliminating and ventilation degree automatic adjusting control method is characterized in that: data obtained using the calculation method of claim 10 and performing the steps of:

when G Vi is temporally deviated, i.e., | (GVi-GV setting) | > P,

the arithmetic control unit or the control unit of the punching device sends out a rejecting pulse to trigger the cigarette rejecting unit, so that the cigarettes with the instantaneous deviation exceeding the allowable deviation P are rejected; after the cigarette is removed, the detection data G Vi still participates in statistical operation;

when: when the standard deviation SD is larger than SD or the coefficient of variation CV% > CV%, a signal for adjusting the focal length of the perforating focusing device is sent out;

when: a standard deviation SD < SD and a coefficient of variation CV% < CV%,

if | (GVi mean-GV set) | ≦ P2: no NOP was performed;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) >0, the arithmetic control unit or the control unit of the punch apparatus signals that the punch time is decreased by a base T0;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) <0, the arithmetic control unit or the control unit of the punch apparatus signals that the punching time is increased by one base T0.

15. An on-line cigarette rejecting and checking method is characterized in that: the method comprises the following steps: the rejecting detection sensor detects gaps of cigarette conveying streams formed after the rejected cigarettes are rejected, and if gaps occur in the cigarette streams corresponding to the positions of the rejected cigarettes, the cigarettes are rejected; if no gap is formed in the position corresponding to the removed cigarette in the cigarette branch, the cigarette is not removed or the failure is removed, and the checking function of the removing unit is formed.

The technical field is as follows:

the invention belongs to the technical field of cigarette production, and particularly relates to an online cigarette ventilation degree detection system.

Background art:

for an old PROTOS70 cigarette making and tipping machine set, after the online laser drilling machine is installed, the cigarette ventilation degree detection and elimination functions are not provided for the machine equipment, so that the stability of the cigarette quality is influenced, and the application of the online laser drilling machine is limited.

Although some new-type domestic equipment of the PROTOS cigarette making machine set has the functions of detecting and eliminating the on-line ventilation degree, the closed-loop control and adjustment of the on-line ventilation degree of the cigarettes are not realized all the time.

According to the requirement of conventional closed-loop feedback control, the numerical value of the current cigarette ventilation degree acquired by the online ventilation degree detection device is fed back to the perforating machine to form a closed-loop feedback control loop for controlling the cigarette ventilation degree, and the control and regulation functions of the online cigarette ventilation degree can be expected to be realized.

However, because a plurality of intermediate transmission drums exist between the detection drum where the cigarette ventilation degree detection device is located and the punching drum where the punching device is located, a long time delay exists between the ventilation degree of the current cigarette obtained by the detection device and the ventilation degree of the cigarette formed by actual punching; in addition, the influences of factors such as fluctuation of laser beam energy, fluctuation of rolling positions when cigarettes are punched, fluctuation of speed of a cigarette making machine and the like exist, effective feedback control cannot be formed between conventional ventilation degree detection and ventilation degree setting, and often, the feedback control is difficult to form a stable closed-loop system, and even larger fluctuation of actual ventilation degree values of the cigarettes can be caused, which is also the reason that the cigarette ventilation degree detection cannot form closed-loop feedback and automatic control with punching work of a punching machine all the time, and no equipment for forming closed-loop control by the cigarette ventilation degree detection and the punching machine exists in the world at present.

The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.

The invention content is as follows:

the invention aims to provide an online cigarette ventilation degree detection system, so that the defects in the prior art are overcome.

In order to achieve the above object, the present invention provides an online cigarette ventilation degree detection system, comprising:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the cigarette rejecting unit is used for rejecting cigarettes with unqualified ventilation detection data according to an electric signal sent by the online cigarette ventilation detection device or the online laser drilling device;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the on-line cigarette ventilation degree detection device and the cigarette rejection unit are respectively connected with the on-line laser drilling device through data line communication to transmit synchronous signals and data.

An online cigarette ventilation control system includes:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the online cigarette ventilation degree detection device is in communication connection with the online laser drilling device through a data line to transmit synchronous signals and detection data.

The online laser drilling device controls the output energy of the laser light source according to the average value of the detection data fed back by the online cigarette ventilation degree detection device, and the purpose of stabilizing the average value of the cigarette ventilation degree detection data is achieved.

Preferably, in the above technical scheme, the synchronization signal is composed of a machine clock pulse sent by the cigarette making machine, a cigarette in-place pulse sent by the control unit of the laser drilling device, or a cigarette in-place pulse detected by an independent sensor.

Preferably, in the above technical solution, the online cigarette ventilation degree detection device is selected from the following combinations: the device comprises a ventilation degree or/and air tightness detection device, a ventilation degree or/and suction resistance detection device and a ventilation degree and air leakage and suction resistance detection device.

Preferably, in the above technical scheme, the online cigarette ventilation degree detection device further comprises a matched operation control unit, which calculates the ventilation degree and the evaluation parameters by a built-in algorithm; the evaluation parameters include the results and data of statistical operations and comparison operations as described below.

Preferably, in the above technical scheme, the rejecting detection sensor is located at the downstream of the rejecting unit and sends a pulse signal to detect gaps of cigarette conveying flows formed after the rejected cigarettes are rejected.

Preferably, among the above-mentioned technical scheme, a cigarette ventilation degree detection device and the communication data line between the online laser perforating device include: the data bus is responsible for transmitting ventilation degree and evaluation parameters, the response clock transmission line transmits response pulses between the operation control unit and the control unit of the punching device, and the data bus comprises a data bus running a network protocol such as TCP/IP and a bus running a CAN protocol, preferably a CAN bus.

Preferably, in the above technical solution, the response pulse includes a response clock pulse sequence or a single response pulse;

when: the operation control unit sends a response clock pulse sequence or a single response pulse, and after receiving the response pulse, the control unit starts to receive the ventilation degree and the evaluation parameters through the bus and carries out corresponding operation;

when: when the operation control unit does not send out response clock pulse, the control unit does not receive bus data, thereby reducing the workload of the control unit

An online cigarette ventilation evaluation parameter calculation method comprises the following steps:

and (3) statistical operation:

GVi the ventilation degree of the current cigarette, including the ventilation degree of all cigarettes passing through the measuring device:

GVi average value = ∑ (GV 1[ U1] DVn)/n, namely the average value of the ventilation degree of the front n cigarettes, and calculating standard deviation SD and coefficient of variation CV% (namely relative deviation);

and (3) comparison operation:

GVi absolute value of instantaneous deviation between ventilation degree of current cigarette and GV set value, including ventilation degree of all cigarettes passing through measuring device:

GVi instantaneous offset = | G Vi-GV setting |;

GVi deviation V between mean and GV setting:

GVi mean deviation = (GVi mean-GV set) = V;

wherein: n: setting the average value of the sampled cigarettes; GVi: a current ventilation degree detection value; GV setting: setting the ventilation degree of the cigarettes; mean value of GV: average value of n cigarette ventilation GVi; p: a set number of allowable instantaneous deviations; p2: adjusting the stable area; SD, standard deviation, and allowable set value SD; CV: coefficient of variation, allowed set value is cv; t0: the puncture time adjusts the cardinality.

Preferably, in the above technical solution, P is set to 2.5; p2 was set to 1.5; sd is set to 0.5-2.5 or 1.5; cv was set at 4% -15% or 10%; t0 is set to 0.2-0.5 microseconds.

According to the online cigarette ventilation degree detection method, when the ventilation degree detection device is only provided with a ventilation degree unit, the following method is selected:

or providing constant air pressure at the cigarette ignition end, forming constant air flow through the microporous nozzle, arranging a pressure sensor P2 at the filter tip to detect residual air pressure, and calculating to obtain the numerical value of cigarette suction resistance and cigarette ventilation = K1 × P2, wherein K1 is an adjusting coefficient and is determined according to different cigarette processes and materials;

or pressure sensors P1 and P2 are arranged at the cigarette ignition end and the filter tip end at the same time, and the numerical value = K2 (P1-P2) of the cigarette suction resistance and the cigarette ventilation degree is formed after calculation, wherein K2 is an adjusting coefficient and is determined according to different cigarette processes and materials;

the micropore nozzle is arranged between the air outlet end of the constant-pressure air supply and the air inlet end of the detection unit, and the constant-pressure air flow is converted into the constant-flow air flow by utilizing the large air resistance formed by micropores, so that the fluctuation of detection data caused by cigarette switching of the air supply air flow is reduced, and the diameter of each micropore is 0.12-2 mm.

The on-line cigarette ventilation degree detection method is characterized in that a ventilation degree detection device is formed by combining a ventilation degree detection unit and an air tightness air leakage detection unit, the cigarette ventilation degree detection unit detects the air tightness air leakage of a cigarette by using the cigarette air tightness air leakage detection unit while detecting the cigarette ventilation degree, and the air tightness air leakage numerical value is used for correcting the ventilation degree numerical value so as to increase the accuracy of the cigarette ventilation degree detection numerical value;

at the moment, if the cigarette air tightness and air leakage detection unit finds that the cigarette has air tightness and air leakage, the operation control unit sends out a corresponding rejection signal of the cigarette, and after the cigarette is rejected, the obtained cigarette ventilation degree data is deleted without entering into statistical operation, so that the influence of the deviation ventilation degree of the air-leaking cigarette on the normal cigarette data is reduced.

The on-line cigarette ventilation degree detection method is characterized in that a ventilation degree detection device is formed by combining a ventilation degree detection unit and a suction resistance detection unit, the cigarette ventilation degree detection unit detects the open type suction resistance PD value of a cigarette by using the suction resistance detection unit while detecting the cigarette ventilation degree, and corrects the ventilation degree value by using the PD value suction resistance value, so that the accuracy of the cigarette ventilation degree detection value is improved;

the cigarette ventilation detection value = K3 (P1-P2-PD), wherein K3 is an adjusting coefficient and is determined according to different cigarette processes and materials.

An online automatic cigarette rejecting and ventilation degree adjusting and controlling method adopts the data obtained by the calculating method and carries out the following steps:

when G Vi has an instantaneous deviation, namely | (GVi-GV set) | > P, the operation control unit or the control unit of the punching device sends out a removal pulse to trigger the cigarette removal unit, so that cigarettes with the instantaneous deviation exceeding the allowable deviation P are removed;

when: when the standard deviation SD is larger than SD or the coefficient of variation CV% > CV%, a signal for adjusting the focal length of the perforating focusing device is sent out;

when: a standard deviation SD < SD and a coefficient of variation CV% < CV%,

if | (GVi mean-GV set) | ≦ P2: no NOP was performed;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) >0, the arithmetic control unit or the control unit of the punch apparatus signals that the punch time is decreased by a base T0;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) <0, the arithmetic control unit or the control unit of the punch apparatus signals that the punching time is increased by a base number T0;

an on-line cigarette rejecting and checking method comprises the following steps: the rejecting detection sensor detects gaps of cigarette conveying streams formed after the rejected cigarettes are rejected, and if gaps occur in the cigarette streams corresponding to the positions of the rejected cigarettes, the cigarettes are rejected; if no gap is formed in the position corresponding to the removed cigarette in the cigarette branch, the cigarette is not removed or the failure is removed, and the checking function of the removing unit is formed.

Compared with the prior art, the invention has the following beneficial effects:

the invention overcomes the problems and the defects of the conventional feedback system, and the parameter values of the average ventilation degree of the cigarettes meeting a certain condition number are used as closed-loop feedback signals to realize the requirement of stabilizing the control of the ventilation degree of the cigarettes.

Description of the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a draft calculation and control flow;

FIG. 3 is a schematic diagram of the rejection principle;

FIG. 4 is a schematic diagram of a culling verification principle;

FIG. 5 is a schematic view of an answer communication;

FIG. 6 is a ventilation detecting unit;

FIG. 7 is a microporous constant flow nozzle;

FIG. 8 is a combination of a ventilation unit and an airtight leakage unit;

FIG. 9 is a flowchart illustrating the operation of the combination of the ventilation unit and the airtight leakage unit;

fig. 10 is a combination of a suction resistance unit and a ventilation degree unit.

The specific implementation mode is as follows:

the following detailed description of specific embodiments of the invention is provided, but it should be understood that the scope of the invention is not limited to the specific embodiments.

Throughout the specification and claims, unless explicitly stated otherwise, the word "comprise", or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

An online cigarette ventilation detection system, comprising:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the cigarette rejecting unit is used for rejecting cigarettes with unqualified ventilation detection data according to an electric signal sent by the online cigarette ventilation detection device or the online laser drilling device;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the on-line cigarette ventilation degree detection device and the cigarette rejection unit are respectively connected with the on-line laser drilling device through data line communication to transmit synchronous signals and data.

An online cigarette ventilation control system includes:

the on-line cigarette ventilation degree detection device detects the ventilation degree value of each cigarette under the coordination of the synchronous signals;

the online laser drilling device is used for drilling the cigarettes to form the cigarettes with certain ventilation degree;

the online cigarette ventilation degree detection device is in communication connection with the online laser drilling device through a data line to transmit synchronous signals and detection data.

The online laser drilling device controls the output energy of the laser light source according to the average value of the detection data fed back by the online cigarette ventilation degree detection device, and the purpose of stabilizing the average value of the cigarette ventilation degree detection data is achieved.

Preferably, in the above technical scheme, the synchronization signal is composed of a machine clock pulse sent by the cigarette making machine, a cigarette in-place pulse sent by the control unit of the laser drilling device, or a cigarette in-place pulse detected by an independent sensor.

Preferably, in the above technical solution, the online cigarette ventilation degree detection device is selected from the following combinations: the device comprises a ventilation degree or/and air tightness detection device, a ventilation degree or/and suction resistance detection device and a ventilation degree and air leakage and suction resistance detection device.

Preferably, in the above technical scheme, the online cigarette ventilation degree detection device further comprises a matched operation control unit, which calculates the ventilation degree and the evaluation parameters by a built-in algorithm; the evaluation parameters include the results and data of statistical operations and comparison operations as described below.

Preferably, in the above technical scheme, the rejecting detection sensor is located at the downstream of the rejecting unit and sends a pulse signal to detect gaps of cigarette conveying flows formed after the rejected cigarettes are rejected.

Preferably, among the above-mentioned technical scheme, a cigarette ventilation degree detection device and the communication data line between the online laser perforating device include: the data bus is responsible for transmitting ventilation degree and evaluation parameters, the response clock transmission line transmits response pulses between the operation control unit and the control unit of the punching device, and the data bus comprises a data bus running a network protocol such as TCP/IP and a bus running a CAN protocol, preferably a CAN bus.

Preferably, in the above technical solution, the response pulse includes a response clock pulse sequence or a single response pulse;

when: the operation control unit sends a response clock pulse sequence or a single response pulse, and after receiving the response pulse, the control unit starts to receive the ventilation degree and the evaluation parameters through the bus and carries out corresponding operation;

when: when the operation control unit does not send out response clock pulse, the control unit does not receive bus data, thereby reducing the workload of the control unit

An online cigarette ventilation evaluation parameter calculation method comprises the following steps:

and (3) statistical operation:

GVi the ventilation degree of the current cigarette, including the ventilation degree of all cigarettes passing through the measuring device:

GVi average value = ∑ (GV 1[ U2] DVn)/n, namely the average value of the ventilation degree of the front n cigarettes, and calculating standard deviation SD and coefficient of variation CV% (namely relative deviation);

and (3) comparison operation:

GVi absolute value of instantaneous deviation between ventilation degree of current cigarette and GV set value, including ventilation degree of all cigarettes passing through measuring device:

GVi instantaneous offset = | G Vi-GV setting |;

GVi deviation V between mean and GV setting:

GVi mean deviation = (GVi mean-GV set) = V;

wherein: n: setting the average value of the sampled cigarettes; GVi: a current ventilation degree detection value; GV setting: setting the ventilation degree of the cigarettes; mean value of GV: average value of n cigarette ventilation GVi; p: a set number of allowable instantaneous deviations; p2: adjusting the stable area; SD, standard deviation, and allowable set value SD; CV: coefficient of variation, allowed set value is cv; t0: the puncture time adjusts the cardinality.

Preferably, in the above technical solution, P is set to 2.5; p2 was set to 1.5; sd is set to 0.5-2.5 or 1.5; cv was set at 4% -15% or 10%; t0 is set to 0.2-0.5 microseconds.

An online automatic cigarette rejecting and ventilation degree adjusting and controlling method adopts the data obtained by the calculating method and carries out the following steps:

when G Vi has an instantaneous deviation, namely | (GVi-GV set) | > P, the operation control unit or the control unit of the punching device sends out a removal pulse to trigger the cigarette removal unit, so that cigarettes with the instantaneous deviation exceeding the allowable deviation P are removed;

when: when the standard deviation SD is larger than SD or the coefficient of variation CV% > CV%, a signal for adjusting the focal length of the perforating focusing device is sent out;

when: a standard deviation SD < SD and a coefficient of variation CV% < CV%,

if | (GVi mean-GV set) | ≦ P2: no NOP was performed;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) >0, the arithmetic control unit or the control unit of the punch apparatus signals that the punch time is decreased by a base T0;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) <0, the arithmetic control unit or the control unit of the punch apparatus signals that the punching time is increased by a base number T0;

an on-line cigarette rejecting and checking method comprises the following steps: the rejecting detection sensor detects gaps of cigarette conveying streams formed after the rejected cigarettes are rejected, and if gaps occur in the cigarette streams corresponding to the positions of the rejected cigarettes, the cigarettes are rejected; if no gap is formed in the position corresponding to the removed cigarette in the cigarette branch, the cigarette is not removed or the failure is removed, and the checking function of the removing unit is formed.

The present application is further described with reference to the accompanying drawings in which:

an online cigarette ventilation degree detection system comprises: the system comprises a synchronous signal, an online cigarette ventilation degree (including ventilation degree or/and air leakage detection, ventilation degree or/and suction resistance detection, ventilation degree or/and air density detection, ventilation degree, air leakage, air density and suction resistance detection) detection device, a matched operation control unit, a cigarette rejecting unit, a rejecting detection sensor, a data transmission line (including a protocol-based data bus or an independent data transmission line), and an online cigarette laser punching device, which comprises a focusing unit and a control unit.

1. The on-line cigarette ventilation degree (including ventilation degree or/and air leakage detection, ventilation degree or/and suction resistance detection, ventilation degree or/and air density detection, ventilation degree and air leakage and air density detection and suction resistance detection) detection device detects the ventilation degree value GVi of each cigarette under the coordination of synchronous signals, and the operation control unit performs the following steps or flow operations on the ventilation degree values of n cigarettes:

wherein:

n: setting the average value of the sampled cigarettes;

GVi: a current ventilation degree detection value;

GV setting: setting the ventilation degree of the cigarettes;

mean value of GV: average value of n cigarette ventilation GVi;

p: a set number of allowable instantaneous deviations, preferably 2.5;

p2: adjusting the stability zone, preferably 1.5;

SD, standard deviation, allowed setting value SD, 0.5-2.5, preferably 1.5;

CV: coefficient of variation, allowed to be set at cv, 4% to 15%, preferably 10%;

t0: the punching time adjusting base number is preferably set to be 0.2-0.5 microseconds;

which comprises the following steps:

carrying out statistical calculation:

GVi average ventilation degree of current n cigarettes:

GVi mean value = ∑ (GV 1+ - + DVn)/n,

the standard deviation SD is calculated and,

calculating coefficient of variation CV% (i.e. relative deviation);

GVi mean, Standard Deviation SD, coefficient of variation CV% (i.e., relative Deviation) are all statistical terms, and the so-called Standard Deviation SD (Std Dev) Standard Deviation is the arithmetic square root of the variance, which reflects the degree of dispersion of a GVi data set.

The coefficient of variation CV = (standard deviation SD/GVi mean) × 100%, which is also referred to as standard deviation rate, indicates the relative degree of fluctuation.

Comparison operation:

g Vi is the absolute value of the instantaneous deviation between the current cigarette ventilation degree and the GV set value:

GVi instantaneous offset = | G Vi-GV set |,

GVi deviation V between average value of cigarette ventilation and GV set value:

GVi mean deviation = (GVi mean-GV set) = V.

Operation action:

3.1 when: g Vi instantaneous deviation, namely | (GVi-GV set) | > P, the arithmetic control unit or the control unit of the punching device sends out a removal pulse to trigger the cigarette removal unit, so that cigarettes with the instantaneous deviation exceeding the allowable deviation P are removed;

3.2 when: when the standard deviation SD is larger than SD and is preferably 1.5, or the coefficient of variation CV% > CV% is preferably 10%, a signal for adjusting the focal length of the perforating focusing device is sent;

3.3 when: when the standard deviation SD < SD is preferably 1.5 and the coefficient of variation CV% < CV% is preferably 10%,

if | (GVi mean-GV set) | ≦ P2: no NOP was performed;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) >0, the arithmetic control unit or the control unit of the punch apparatus signals that the punch time is decreased by a base T0;

if | (GVi mean-GV setting) | > P2 and (GVi mean-GV setting-P2) <0, the arithmetic control unit or the control unit of the punch apparatus signals that the punching time is increased by a base number T0;

the online cigarette ventilation degree detection device is matched with an operation control unit, a cigarette rejection unit and a rejection detection sensor, and has the function of checking the certificate of the rejection unit; the rejecting detection sensor is positioned at the downstream of the rejecting unit and detects gaps of the cigarette conveying flow formed after the rejected cigarettes are rejected, and if gaps appear at positions corresponding to the rejected cigarettes in the cigarette flow, the cigarettes are rejected; if no gap is formed in the position corresponding to the removed cigarette in the cigarette branch, the cigarette is not removed or the failure is removed, and the checking function of the removing unit is formed.

An online cigarette ventilation degree detection method, as shown in fig. 6 and 7, when the ventilation degree detection device is only provided with a ventilation degree unit, the following method is selected:

or providing constant air pressure at the cigarette ignition end, forming constant air flow through the microporous nozzle, arranging a pressure sensor P2 at the filter tip to detect residual air pressure, and calculating to obtain the numerical value of cigarette suction resistance and cigarette ventilation = K1 × P2, wherein K1 is an adjusting coefficient and is determined according to different cigarette processes and materials;

or pressure sensors P1 and P2 are arranged at the cigarette ignition end and the filter tip end at the same time, and the numerical value = K2 (P1-P2) of the cigarette suction resistance and the cigarette ventilation degree is formed after calculation, wherein K2 is an adjusting coefficient and is determined according to different cigarette processes and materials;

the micropore nozzle is arranged between the air outlet end of the constant-pressure air supply and the air inlet end of the detection unit, and the constant-pressure air flow is converted into the constant-flow air flow by utilizing the large air resistance formed by micropores, so that the fluctuation of detection data caused by cigarette switching of the air supply air flow is reduced, and the diameter of each micropore is 0.12-2 mm.

An online cigarette ventilation degree detection method is shown in figures 8 and 9, wherein a ventilation degree detection device is formed by combining a ventilation degree detection unit and an air tightness air leakage detection unit, the cigarette ventilation degree detection unit detects the air tightness air leakage of a cigarette by using the cigarette air tightness air leakage detection unit while detecting the cigarette ventilation degree, and the value of the ventilation degree is corrected by using the air tightness air leakage value, so that the accuracy of the cigarette ventilation degree detection value is improved;

an online cigarette ventilation degree detection method is characterized in that a ventilation degree detection device is formed by combining a ventilation degree detection unit and a suction resistance detection unit, the cigarette ventilation degree detection unit detects the open type suction resistance PD value of a cigarette by using the suction resistance detection unit while detecting the cigarette ventilation degree, and corrects the ventilation degree value by using the PD value suction resistance value, so that the accuracy of the cigarette ventilation degree detection value is improved;

the cigarette ventilation detection value = K3 (P1-P2-PD), wherein K3 is an adjusting coefficient and is determined according to different cigarette processes and materials.

After the implementation of the patent scheme, the concept of statistical evaluation parameters (mean value, standard deviation and coefficient of variation) is introduced into the cigarette ventilation degree detection and control process for the first time, the obtained standard deviation and coefficient of variation evaluation parameters are used for adjusting the focal length of the focusing device of the drilling machine, and the obtained mean evaluation parameters are applied to adjusting and controlling the laser energy of the drilling machine. The arrangement is adopted, so that the adverse effect on the stability of the control system caused by the normal fluctuation of the ventilation degree detection value of the single cigarette is avoided, the adverse effect on the stability of the control system caused by the fluctuation of the ventilation degree detection value of the single cigarette caused by the fluctuation of the dialing of the cigarette and the fluctuation of laser energy is also avoided, and effective, stable and automatic closed-loop regulation and control are realized.

The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.