Sealing integrity detection system and method for sealed bottle

Abstract

The invention provides a sealing integrity detection system and method for a sealed bottle, and the method comprises the steps: transmitting a first laser beam to a collimator through an optical fiber after a controller receives a trigger signal; the collimator corrects the first laser beam and emits an obtained second laser beam to the to-be-detected sealed bottle so as to transmit a laser signal to the signal receiving unit through the to-be-detected sealed bottle; the signal receiving unit outputs a first signal according to the laser signal and sends the first signal to the controller so as to output a second signal through the controller and send the second signal to the upper computer; the upper computer calculates the first gas content in the sealed bottle to be detected according to the second signal, compares the first gas content with the preset standard gas content, and determines the sealing integrity detection result of the sealed bottle to be detected according to the obtained comparison result. According to the system, the sealing integrity of the to-be-detected sealing bottle can be detected online without damaging the to-be-detected sealing bottle, and full detection of sealing bottle products produced by a production line can be realized.

Description

Technical Field

[0001] The present invention relates to the technical field of seal integrity detection, and in particular to a seal integrity detection system and method for a sealed bottle. Background Art

[0002] At present, for vials or ampoules used for drug packaging, when testing the sealing of vials or ampoules that require nitrogen filling or vacuum packaging, a destructive method is generally used, that is, the package is broken and the gas is extracted, and the gas is input into the sensor measurement cavity for spectral measurement or physical and chemical measurement to analyze the gas components. By comparing the gas component content of the standard sample, it is determined whether the drug packaging is leaking. This method requires destroying the drug packaging to measure the gas inside the drug packaging, and the destructive measurement method can only be used for sampling detection. It takes a long time to extract the gas for measurement, and it is difficult to conduct a full inspection of the products produced on the production line. Summary of the invention

[0003] The purpose of the present invention is to provide a sealing integrity detection system and method for sealed bottles, so as to complete online detection of the sealing integrity of sealed bottles and realize full inspection of sealed bottle products produced by the production line.

[0004] The present invention provides a sealing integrity detection system for a sealed bottle, the system comprising: a controller, a collimator, a signal receiving unit and a host computer; the controller is used to emit a first laser beam after receiving a trigger signal, and transmit the first laser beam to the collimator through an optical fiber; the collimator is used to correct the first laser beam, and emit a second laser beam obtained after the correction to the sealed bottle to be tested, so as to transmit a laser signal to the signal receiving unit through the sealed bottle to be tested; the signal receiving unit is used to output a first signal according to the laser signal, send the first signal to the controller, process the first signal through the controller, output a second signal, and send the second signal to the host computer; the host computer is used to calculate the first gas content in the sealed bottle to be tested according to the second signal, compare the first gas content with a preset standard gas content, obtain a comparison result, and determine the sealing integrity detection result of the sealed bottle to be tested according to the comparison result.

[0005] Furthermore, the controller includes: a trigger sensor, a signal conditioning module and a laser that are communicatively connected in sequence; the laser is communicatively connected to the collimator via an optical fiber; the trigger sensor is used to output a first control signal to the signal conditioning module after receiving a trigger signal; the signal conditioning module is used to output a laser emission signal according to the first control signal; and the laser is used to emit a first laser beam according to the laser emission signal.

[0006] Furthermore, the controller also includes: a signal amplifier and a communication module; the signal amplifier is communicatively connected to the signal receiving unit; the communication module is communicatively connected to the host computer; the signal amplifier is used to amplify the first signal to obtain a second signal, and send the second signal to the host computer through the communication module.

[0007] Furthermore, the host computer is used for: receiving multiple second signals within a preset test time window, processing the multiple second signals separately according to a preset processing method, and obtaining multiple third signals; performing numerical fitting on the multiple third signals to obtain fitting results; and calculating the first gas content in the sealed bottle to be tested according to the fitting results.

[0008] Furthermore, the preset processing method includes at least one of the following: demodulation processing, filtering processing and smoothing processing.

[0009] Furthermore, the upper computer is also used to: if the comparison result indicates that the deviation value between the first gas content and the standard gas content exceeds the preset threshold range, determine that there is a leakage in the sealed bottle to be tested; if the comparison result indicates that the deviation value between the first gas content and the standard gas content does not exceed the preset threshold range, determine that there is no leakage in the sealed bottle to be tested.

[0010] Furthermore, the system also includes a sorting module; the sorting module is used for: when the sealed bottle to be tested is moved to a preset rejection position, if the sealed bottle to be tested has a leak, the sealed bottle to be tested is rejected according to a preset rejection method; if the sealed bottle to be tested has no leak, the sealed bottle to be tested is allowed to pass.

[0011] Furthermore, the preset rejection methods include: blowing method, striking method or guiding diversion method.

[0012] Furthermore, the system also includes: a display module; the display module is used to display the sealing integrity test result of the sealed bottle to be tested.

[0013] The present invention provides a method for detecting the sealing integrity of a sealed bottle, the method comprising: after receiving a trigger signal, the controller emits a first laser beam, and transmits the first laser beam to a collimator through an optical fiber; the collimator corrects the first laser beam, and shoots a second laser beam obtained after the correction to the sealed bottle to be tested, so as to transmit a laser signal to a signal receiving unit through the sealed bottle to be tested; the signal receiving unit outputs a first signal according to the laser signal, and sends the first signal to the controller, processes the first signal through the controller, outputs a second signal, and sends the second signal to a host computer; the host computer calculates a first gas content in the sealed bottle to be tested according to the second signal, compares the first gas content with a preset standard gas content, obtains a comparison result, and determines a sealing integrity detection result of the sealed bottle to be tested according to the comparison result.

[0014] The sealing integrity detection system and method of the sealed bottle provided by the present invention, the controller is used to emit a first laser beam after receiving a trigger signal, and transmit the first laser beam to a collimator through an optical fiber; the collimator is used to correct the first laser beam, and shoot the second laser beam obtained after correction to the sealed bottle to be tested, so as to transmit a laser signal to a signal receiving unit through the sealed bottle to be tested; the signal receiving unit is used to output a first signal according to the laser signal, send the first signal to the controller, process the first signal through the controller, output a second signal, and send the second signal to a host computer; the host computer is used to calculate the first gas content in the sealed bottle to be tested according to the second signal, compare the first gas content with the preset standard gas content, obtain a comparison result, and determine the sealing integrity detection result of the sealed bottle to be tested according to the comparison result. The system can complete online detection of the sealing integrity of the sealed bottle to be tested without destroying the sealed bottle to be tested, and can achieve full inspection of the sealed bottle products produced by the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 A schematic diagram of a sealing integrity detection system for a sealed bottle provided by an embodiment of the present invention; Figure 2 A schematic diagram of another sealed bottle sealing integrity detection system provided by an embodiment of the present invention; Figure 3 A flow chart of a method for detecting the sealing integrity of a sealed bottle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0017] The technical solution of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] When testing the sealing of vials or ampoules that require nitrogen filling or vacuum packaging, the relevant technology needs to destroy the drug packaging to measure the gas inside the drug packaging, and the destructive measurement method can only be used for sampling detection, and it is impossible to achieve 100% full inspection; in addition, the long time required for gas extraction measurement also restricts the possibility of online full inspection of the product. Based on this, the embodiment of the present invention provides a sealing integrity detection system and method for sealed bottles, which can be applied to applications that require the sealing integrity of sealed bottles to be detected.

[0019] To facilitate understanding of this embodiment, a sealing integrity detection system for a sealed bottle disclosed in an embodiment of the present invention is first introduced. Figure 1 As shown, the system includes: a controller 10, a collimator 11, a signal receiving unit 12 and a host computer 13; The controller 10 is used to emit a first laser beam after receiving a trigger signal, and transmit the first laser beam to the collimator 11 through the optical fiber; the collimator 11 is used to correct the first laser beam, and emit the second laser beam obtained after the correction to the sealed bottle to be tested, so as to transmit the laser signal to the signal receiving unit 12 through the sealed bottle to be tested; the above-mentioned trigger signal can be used to indicate that the sealed bottle to be tested has reached a preset designated position; the sealed bottle to be tested can be a vial or ampoule bottle for packaging medicines, etc.; in actual implementation, when the controller 10 receives the above-mentioned trigger signal, it can be determined that the sealed bottle to be tested has reached the designated position. At this time, the first laser beam can be controlled to be emitted and transmitted to the collimator 11 through the optical fiber. The collimator 11 is an optical element for input and output of an optical fiber communication optical device, which can transmit the optical fiber out The divergent light is converted into parallel light by a convex lens in front, so that the first laser beam can be corrected and the corrected second laser beam is directed to the sealed bottle to be tested. In practical applications, in order to ensure the consistency of the results, the detection position of the sealed bottle to be tested is usually fixed, that is, for different sealed bottles to be tested, the second laser beam is directed to the same detection position. For example, taking the sealed bottle to be tested as a vial of packaged medicine as an example, the detection position may be the area above the medicine in the vial, etc. Since the detection position is not blocked by the medicine, the second laser beam can pass through the sealed bottle to be tested, and the gas filled in the sealed bottle to be tested usually absorbs or reflects the second laser beam, causing the light intensity of the second laser beam to change, thereby obtaining a laser signal; the obtained laser signal can be emitted to the signal receiving unit 12.

[0020] The signal receiving unit 12 is used to output a first signal according to the laser signal, send the first signal to the controller 10, process the first signal through the controller 10, output a second signal, and send the second signal to the host computer 13; in actual implementation, the signal receiving unit 12 can convert the received laser signal into a first signal, which is usually an analog electrical signal, and send the first signal to the controller 10. The controller 10 can demodulate, amplify, and other processes on the first signal, output a second signal, and send the second signal to the host computer 13.

[0021] The host computer 13 is used to calculate the first gas content in the sealed bottle to be tested according to the second signal, compare the first gas content with a preset standard gas content to obtain a comparison result, and determine the sealing integrity test result of the sealed bottle to be tested according to the comparison result. The above-mentioned first gas content may include only the gas content of one gas, or may include the gas content of multiple gases. For example, if the sealed bottle to be tested is filled with nitrogen and the sealed bottle to be tested is completely sealed, the first gas content may be the gas content of nitrogen; if the sealed bottle to be tested leaks, the first gas content may include the gas content of nitrogen, the gas content of oxygen, etc.; the above-mentioned standard gas content is usually a predetermined gas content value, which indicates the gas content inside the sealed bottle to be tested when it is completely sealed; in actual implementation, the upper computer 13 can deduce the first gas content in the sealed bottle to be tested based on the received second signal, and compare it with the preset standard gas content. The sealing integrity of the sealed bottle to be tested can be evaluated based on the comparison result. For example, the deviation value between the first gas content and the corresponding standard gas content can be calculated. If the deviation value exceeds the preset threshold range, it can be considered that there is a leak in the sealed bottle to be tested. At this time, you can continue to check whether the sealed bottle to be tested is damaged.

[0022] In the sealing integrity detection system for the above-mentioned sealed bottle, the controller 10 is used to emit a first laser beam after receiving a trigger signal, and transmit the first laser beam to the collimator 11 through an optical fiber; the collimator 11 is used to correct the first laser beam, and shoot the second laser beam obtained after correction to the sealed bottle to be tested, so as to transmit a laser signal to the signal receiving unit 12 through the sealed bottle to be tested; the signal receiving unit 12 is used to output a first signal according to the laser signal, send the first signal to the controller 10, and the controller 10 processes the first signal, outputs a second signal, and sends the second signal to the host computer 13; the host computer 13 is used to calculate the first gas content in the sealed bottle to be tested according to the second signal, compare the first gas content with the preset standard gas content, obtain a comparison result, and determine the sealing integrity detection result of the sealed bottle to be tested according to the comparison result. The system can complete online detection of the sealing integrity of the sealed bottle to be tested without destroying the sealed bottle to be tested, and can realize full inspection of the sealed bottle products produced by the production line.

[0023] Further, such as Figure 2 A schematic diagram of another sealing integrity detection system for sealed bottles is shown, wherein the controller 10 comprises: a trigger sensor 101, a signal conditioning module 102 and a laser 103 which are communicatively connected in sequence; the laser 103 is communicatively connected to the collimator 11 via an optical fiber; the trigger sensor 101 is used for outputting a first control signal to the signal conditioning module 102 upon receiving a trigger signal; the signal conditioning module 102 is used for outputting a laser emission signal according to the first control signal; the laser 103 is used for emitting a first laser beam according to the laser emission signal.

[0024] In actual implementation, the trigger sensor 101 can select a suitable triggering method according to actual needs, for example, a mechanical triggering method (for example, the sealed bottle to be tested triggers the limit switch, etc.), a photoelectric induction triggering method (for example, the sealed bottle to be tested blocks the light, etc.) or an internal program triggering method (for example, the logic controller 10 automatically triggers by controlling the position of the sealed bottle to be tested, etc.); in actual implementation, in order to ensure the accuracy of the detection result, the trigger sensor 101 can be used to receive the above trigger signal. For example, when the sealed bottle to be tested triggers the limit switch, a trigger signal is issued, and the trigger sensor 101 can collect the trigger signal, and at this time, a first control signal can be output to the signal conditioning module 102. The signal conditioning module 102 can generate a laser emission signal according to the first control signal, and the laser emission signal can be used to instruct the laser 103 to emit a first laser beam; after receiving the laser emission signal, the laser 103 can emit a first laser beam. Usually, the laser 103 can emit a narrow-band first laser beam to the detection position of the sealed bottle to be tested through a tunable function. Further, such as Figure 2 As shown, the controller 10 also includes: a signal amplifier 104 and a communication module 105; the signal amplifier 104 is communicatively connected to the signal receiving unit 12; the communication module 105 is communicatively connected to the host computer 13; the signal amplifier 104 is used to amplify the first signal to obtain a second signal, and send the second signal to the host computer 13 through the communication module 105.

[0025] The signal amplifier 104 can receive the first signal from the signal receiving unit 12 , and amplify the first signal to improve the communication quality, and transmit the obtained second signal to the host computer 13 through the communication module 105 .

[0026] Furthermore, the host computer 13 is used for: the host computer 13 is used for receiving multiple second signals within a preset test time window, and processing the multiple second signals respectively according to a preset processing method to obtain multiple third signals; performing numerical fitting on the multiple third signals to obtain fitting results; and calculating the first gas content in the sealed bottle to be tested according to the fitting results.

[0027] The duration corresponding to the above-mentioned preset test time window is adjustable, and can be set according to actual needs. For example, it can be a period of time corresponding to the detection of a moving sealed bottle from the beginning to the completion of the detection, etc.; the above-mentioned preset processing method includes at least one of the following: demodulation processing, filtering processing and smoothing processing. Of course, other processing methods can also be used according to actual needs; wherein, demodulation processing is the process of recovering the signal from the modulated signal carrying the signal; filtering processing is the operation of filtering out the frequency of a specific band in the second signal, which can suppress and prevent interference; smoothing processing can be understood as a processing method that reduces the intensity of noise in the signal to make it smoother; in actual implementation, the first laser beam can also be encoded and conditioned by the signal conditioning module 102. In this case, the upper computer 13 needs to demodulate the received second signal; within the preset test time window, the upper computer 13 can obtain multiple second signals. After processing each second signal separately according to the preset processing method, multiple corresponding third signals can be obtained. Through numerical fitting, the fitting result can be obtained, and then the first gas content in the sealed bottle to be tested is determined; for example, taking oxygen as an example, the upper The bit machine 13 can first demodulate the acquired multiple second signals, and then perform filtering processing to reduce the random interference problem caused by the unevenness or uneven thickness of the sealed bottle to be tested. The filtered signal can also be downsampled according to the needs to reduce the signal processing load, and finally obtain multiple third signals. The multiple third signals can be fitted to obtain a fitting curve. According to the maximum value and slope of the fitting curve, the extreme point corresponding to the weakest oxygen signal when the sealed bottle to be tested moves through can be found. According to the extreme point, the signal of the adjacent preset time period is selected. The preset time period is usually less than the preset test time window. For example, the signal of the preset time period centered on the extreme point can be selected, and the average value of the multiple signals corresponding to the preset time period is calculated. The average value is used as the measurement value of oxygen in the sealed bottle to be tested, and the calibration values ​​corresponding to the preset different oxygen contents are obtained. For example, the first calibration value corresponds to the oxygen content of 1%, and the second calibration value corresponds to the oxygen content of 2%. According to the calculated oxygen measurement value and the calibration values ​​corresponding to different oxygen contents, the output value of the oxygen content in the sealed bottle to be tested (corresponding to the above-mentioned first gas content) can be approximately fitted.

[0028] In practical applications, different gas molecules will show specific spectral absorption characteristics. For example, taking oxygen as an example, after a pulsed laser beam of a certain frequency is emitted, when it irradiates oxygen molecules, it will produce obvious reflection or absorption of the laser of a specific frequency. By analyzing the intensity of the laser light of a specific frequency, the amount of oxygen analysis can be obtained.

[0029] The general spectrum processing process can also include the following processing processes: baseline correction, noise reduction, normalization, standard normal variable transformation, derivative spectrum processing, deconvolution processing, etc. The following is a brief description of each processing process: 1. Baseline Correction: Remove baseline offset or drift caused by the instrument, sample container or other factors to ensure that the spectrum reflects the characteristics of the sample itself.

[0030] 2. Noise Reduction: Use various filtering techniques such as moving average, Savitzky-Golay filtering, wavelet transform, etc. to reduce random noise in spectral data.

[0031] 3. Normalization: Adjusting the intensity ratio of the spectrum to the same level facilitates comparison between data. Commonly used methods include vector normalization, maximum normalization, norm normalization, etc.

[0032] 4. Standard Normal Variate (SNV): used to correct scattering effects and perform spectral correction.

[0033] 5. Derivative Spectroscopy: It can highlight the details of the spectral curve by calculating the first, second or higher order derivatives, which helps to separate overlapping peaks and eliminate the influence of baseline drift.

[0034] 6. Deconvolution: It is a mathematical process used to separate overlapping signals in a spectrum to obtain clearer peak information.

[0035] Furthermore, the host computer 13 is also used to: if the comparison result indicates that the deviation value between the first gas content and the standard gas content exceeds the preset threshold range, determine that there is a leakage in the sealed bottle to be tested; if the comparison result indicates that the deviation value between the first gas content and the standard gas content does not exceed the preset threshold range, determine that there is no leakage in the sealed bottle to be tested.

[0036] The above-mentioned preset threshold range can be set according to actual needs; in actual implementation, the upper computer 13 can calculate the deviation value between the first gas content and the standard gas content. If the deviation value exceeds the preset threshold range, for example, the nitrogen content is much lower than the corresponding standard nitrogen content, it can be considered that there is a leak in the sealed bottle to be tested, and it is necessary to check whether the sealed bottle to be tested is broken; if the deviation value does not exceed the preset threshold range, for example, the nitrogen content is slightly lower than the corresponding standard nitrogen content, but is within the allowable range, it can be considered that there is no leakage in the sealed bottle to be tested, and the sealing integrity of the sealed bottle to be tested meets the requirements.

[0037] Furthermore, the system also includes a sorting module; the sorting module is used for: when the sealed bottle to be tested is moved to a preset rejection position, if the sealed bottle to be tested has a leak, the sealed bottle to be tested is rejected according to a preset rejection method; if the sealed bottle to be tested has no leak, the sealed bottle to be tested is allowed to pass.

[0038] The above-mentioned rejection position can be understood as the position corresponding to the rejection of defective products on the production line; the above-mentioned preset rejection methods include: blowing method, striking method or guided diversion method; among them, the blowing method can be understood as a method of rejecting defective products by gas blowing; the striking method can be understood as a method of rejecting defective products by using a preset striker; the above-mentioned guided diversion method can be understood as a method of diverting defective products to another production line branch to separate defective products from qualified products. In actual implementation, after the full inspection of the product, the elimination of defective products is one of the important means to fully play the role of online full inspection. In actual applications, the sealed bottles to be tested on the production line pass through the inspection position in sequence through the assembly line. Before the designated sealed bottle to be tested reaches the rejection position, the sealing integrity test result corresponding to the designated sealed bottle to be tested will be calculated and stored in advance. It should be noted that the sealing integrity test result of each sealed bottle to be tested on the production line will be stored in sequence according to the order of product incoming materials. When the designated sealed bottle to be tested arrives at the rejection position, the sorting module can read the sealing integrity test result of the designated sealed bottle to be tested. If the sealing integrity test result indicates that the designated sealed bottle to be tested has a leak, the designated sealed bottle to be tested can be automatically rejected according to the preset rejection method. If the sealing integrity test result indicates that the designated sealed bottle to be tested does not have a leak, the designated sealed bottle to be tested can be released normally.

[0039] Usually, the seal integrity test results of the sealed bottle to be tested will be recorded in the database. When the seal integrity test result indicates that there is no leakage in the sealed bottle to be tested, it can be represented by "OK"; when the seal integrity test result indicates that there is leakage in the sealed bottle to be tested, it can be represented by "NG"; the seal integrity test results saved in the database usually need to comply with data integrity, data uniqueness and non-tamperability requirements.

[0040] Furthermore, the system further comprises: a display module 14; the display module 14 is used to display the sealing integrity test result of the sealed bottle to be tested. Figure 2 As shown, the display module 14 is usually connected to the upper computer 13 for communication. The display module 14 can be a display screen, etc. In actual implementation, after the upper computer 13 determines the sealing integrity test result of the sealed bottle to be tested, the sealing integrity test result can be displayed through the display module 14, which is more convenient for users to view and take corresponding measures according to the sealing integrity test result.

[0041] In addition, regular calibration of the above-mentioned sealing integrity detection system is a necessary way to ensure the accuracy of the detection. Standard samples with different standard gas contents are continuously passed through the detection position, and the measured values ​​of different gas contents are measured. The measured values ​​and actual values ​​of different standard gas contents are used for parameter fitting to minimize the deviation between the measured values ​​and the actual values. The specific fitting method can refer to the relevant technology and will not be repeated here.

[0042] The above-mentioned sealed bottle seal integrity detection system measures the gas components in the drug packaging by passing a programmable laser beam through the detection position of the sealed bottle to be tested, detecting the absorption and reflection of the spectrum by the gas in the drug packaging, and judging whether the sealed bottle is leaking based on the difference in gas component content with the standard sample. The system can achieve 100% online measurement of the seal integrity of nitrogen-filled or vacuum-packaged drugs through a non-destructive gas spectrum laser rapid detection method, avoiding the full quality inspection of products that cannot be achieved by sampling methods.

[0043] In addition, the corresponding detection equipment of the system is small in size and can be directly installed on the packaging line or light inspection machine to achieve equipment integration, conduct real-time monitoring of the production process and online alarm and removal of defective products, avoiding the waste of products caused by continuous production of defective products.

[0044] When the sealed bottle passes the preset designated position, the continuous sampling is triggered synchronously to measure the gas cavity part of the packaging bottle head and analyze the gas content components in the packaging. During the analysis process, the data is filtered by sliding and false points to eliminate the interference of reflection and refraction of the laser beam passing through the glass packaging container on the measurement value to a great extent. The system does not need to use vacuum or nitrogen to purge the peripheral area of ​​the measurement target. By improving the detection method, the detection speed is increased to meet the production requirements of the production line.

[0045] The embodiment of the present invention also provides a method for detecting the sealing integrity of a sealed bottle, such as Figure 3 As shown, the method includes: Step S302, after receiving the trigger signal, the controller emits a first laser beam and transmits the first laser beam to the collimator through the optical fiber; Step S304, the collimator calibrates the first laser beam, and directs the calibrated second laser beam toward the sealed bottle to be tested, so as to transmit a laser signal to the signal receiving unit through the sealed bottle to be tested; Step S306, the signal receiving unit outputs a first signal according to the laser signal, sends the first signal to the controller, processes the first signal through the controller, outputs a second signal, and sends the second signal to the host computer; Step S308, the host computer calculates the first gas content in the sealed bottle to be tested according to the second signal, compares the first gas content with a preset standard gas content to obtain a comparison result, and determines the sealing integrity test result of the sealed bottle to be tested according to the comparison result.

[0046] The above-mentioned sealed bottle sealing integrity detection method can complete the online detection of the sealing integrity of the sealed bottle to be detected without destroying the sealed bottle to be detected, and can realize the full inspection of the sealed bottle products produced by the production line.

[0047] Finally, it should be noted that 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sealing integrity detection system for a sealed bottle, characterized in that: The system comprises: a controller, a collimator, a signal receiving unit and a host computer; The controller is used to emit a first laser beam upon receiving a trigger signal, and transmit the first laser beam to a collimator via an optical fiber; The collimator is used to calibrate the first laser beam, and direct the second laser beam obtained after the calibration toward the sealed bottle to be tested, so as to transmit the laser signal to the signal receiving unit through the sealed bottle to be tested; The signal receiving unit is used to output a first signal according to the laser signal, send the first signal to the controller, process the first signal through the controller, output a second signal, and send the second signal to the host computer; The host computer is used to calculate the first gas content in the sealed bottle to be tested according to the second signal, compare the first gas content with a preset standard gas content to obtain a comparison result, and determine the sealing integrity test result of the sealed bottle to be tested according to the comparison result.

2. The system according to claim 1, characterized in that The controller comprises: a trigger sensor, a signal conditioning module and a laser which are communicatively connected in sequence; the laser is communicatively connected to the collimator via an optical fiber; The trigger sensor is used to output a first control signal to the signal conditioning module after receiving a trigger signal; The signal conditioning module is used to output a laser emission signal according to the first control signal; The laser is used to emit a first laser beam according to the laser emission signal.

3. The system according to claim 1, characterized in that The controller further comprises: a signal amplifier and a communication module; the signal amplifier is communicatively connected to the signal receiving unit; the communication module is communicatively connected to the host computer; The signal amplifier is used to amplify the first signal to obtain a second signal, and send the second signal to the host computer through the communication module.

4. The system according to claim 1, characterized in that The host computer is used for: The host computer is used to receive a plurality of second signals within a preset test time window, and process the plurality of second signals respectively according to a preset processing method to obtain a plurality of third signals; Performing numerical fitting on the plurality of third signals to obtain fitting results; The first gas content in the sealed bottle to be tested is calculated according to the fitting result.

5. The system according to claim 4, characterized in that The preset processing method includes at least one of the following: demodulation processing, filtering processing and smoothing processing.

6. The system according to claim 1, characterized in that The host computer is also used for: If the comparison result indicates that the deviation between the first gas content and the standard gas content exceeds a preset threshold range, it is determined that the sealed bottle to be tested has a leak; If the comparison result indicates that the deviation value between the first gas content and the standard gas content does not exceed the preset threshold range, it is determined that there is no leakage in the sealed bottle to be tested.

7. The system according to claim 1, characterized in that The system further comprises a sorting module; the sorting module is used for: When the sealed bottle to be tested is moved to the preset rejection position, if the sealed bottle to be tested has leakage, the sealed bottle to be tested is rejected according to the preset rejection method; If there is no leakage in the sealed bottle to be tested, the sealed bottle to be tested is allowed to pass through.

8. The system according to claim 7, characterized in that The preset rejection methods include: blowing method, striking method or guiding diversion method.

9. The system according to claim 1, characterized in that The system further comprises: a display module; The display module is used to display the sealing integrity test result of the sealed bottle to be tested.

10. A method for detecting the sealing integrity of a sealed bottle, characterized in that: The method comprises: After receiving the trigger signal, the controller emits a first laser beam and transmits the first laser beam to the collimator through the optical fiber; The collimator corrects the first laser beam, and directs the corrected second laser beam toward the sealed bottle to be tested, so as to transmit a laser signal to the signal receiving unit through the sealed bottle to be tested; The signal receiving unit outputs a first signal according to the laser signal, sends the first signal to the controller, processes the first signal through the controller, outputs a second signal, and sends the second signal to the host computer; The host computer calculates the first gas content in the sealed bottle to be tested according to the second signal, compares the first gas content with a preset standard gas content to obtain a comparison result, and determines a sealing integrity test result of the sealed bottle to be tested according to the comparison result.

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