CN109001156B - TDLAS-based sealed bottle/tank water vapor detection device and detection method thereof - Google Patents

TDLAS-based sealed bottle/tank water vapor detection device and detection method thereof Download PDF

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Publication number
CN109001156B
CN109001156B CN201810999739.6A CN201810999739A CN109001156B CN 109001156 B CN109001156 B CN 109001156B CN 201810999739 A CN201810999739 A CN 201810999739A CN 109001156 B CN109001156 B CN 109001156B
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sealed bottle
assembly line
product
tank assembly
bottle
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CN109001156A (en
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汪聪
黄安贻
张洁
周斌
钱进
李锋
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Wuhan Accuracy Photoelectric Automatic Control Co ltd
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Wuhan Accuracy Photoelectric Automatic Control Co ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/25Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • G01N21/31Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
    • G01N21/39Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry using tunable lasers
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N2201/00Features of devices classified in G01N21/00
    • G01N2201/06Illumination; Optics
    • G01N2201/061Sources
    • G01N2201/06113Coherent sources; lasers

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Optics & Photonics (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Examining Or Testing Airtightness (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention discloses a TDLAS-based sealed bottle/tank water vapor detection device, which comprises a sealed bottle/tank assembly line, wherein a laser emission device and a laser receiving device are respectively arranged at two sides of the sealed bottle/tank assembly line; the number of the laser emitting devices and the number of the laser receiving devices are several; the laser emission devices are uniformly distributed along the length direction of the sealed bottle/tank assembly line, and each laser emission device corresponds to one laser receiving device; each laser receiving device is connected to the signal input end of the microcontroller through a signal wire; and a defective product removing device is further arranged outside the sealed bottle/tank assembly line and is electrically connected with the signal output end of the microcontroller. The invention realizes the accurate detection of the oxygen and water vapor content in the sealed bottle/tank, and has higher detection accuracy and smaller error rate.

Description

TDLAS-based sealed bottle/tank water vapor detection device and detection method thereof
Technical Field
The invention relates to the technical field of package detection, in particular to a TDLAS-based sealed bottle/tank water vapor detection device and a detection method thereof.
Background
In the production packaging of the industries of food, medicine, chemical industry and the like, after the product is sealed, the content of oxygen and water vapor in the sealed bottle/can is detected to ensure that the content of the oxygen and the water vapor in the sealed bottle/can meets the standard requirement.
In the conventional detection method, the detection is generally performed by a gas detector, but the gas detector is in direct contact with air, and the content of oxygen and water vapor in the air is very high, which has a great influence on the accuracy of the detection. In order to realize accurate detection of the content of oxygen and water vapor in the sealed bottle/can, the company provides a TDLAS-based sealed bottle/can water vapor detection device.
Summary of the invention
In order to solve the technical problems, the invention provides a TDLAS-based sealed bottling/can water vapor detection device and a detection method thereof.
The technical scheme adopted by the invention is as follows:
a TDLAS-based sealed bottle/tank water vapor detection device comprises a sealed bottle/tank assembly line, wherein a laser emission device and a laser receiving device are respectively arranged at two sides of the sealed bottle/tank assembly line; the number of the laser emitting devices and the number of the laser receiving devices are several; the laser emission devices are uniformly distributed along the length direction of the sealed bottle/tank assembly line, and each laser emission device corresponds to one laser receiving device; each laser receiving device is connected to the signal input end of the microcontroller through a signal wire; and a defective product removing device is further arranged outside the sealed bottle/tank assembly line and is electrically connected with the signal output end of the microcontroller.
As the preference of this embodiment, sealed bottle/jar assembly line is U type structure, a plurality of laser emitter even distribution is in the outside of U type sealed bottle/jar assembly line, and a plurality of laser receiving arrangement sets up in the inboard of U type sealed bottle/jar assembly line, unqualified products rejection unit installs the inboard at U type sealed bottle/jar assembly line.
As the preference of this embodiment, be equipped with the product on two straight line assembly lines of U type sealed bottle/jar assembly line and advance to examine mouthful and go out to examine mouthful respectively, be equipped with the disqualified product and stack the district in the position that is close to the product and go out to examine mouthful on U type sealed bottle/jar assembly line, disqualified product removing devices set up in the inboard of U type sealed bottle/jar assembly line and be close to disqualified product and stack the district.
As a preferable mode of the embodiment, the bottom of each laser emitting device is provided with a mounting column with adjustable height; the laser receiving devices are arranged on the mounting columns with adjustable heights.
As a preference of the present embodiment, the microcontroller comprises a data processing unit, a data storage unit, a data analysis unit and a motor drive unit;
the data processing unit is used for sequentially transmitting the data returned by the laser receiving device according to a calculation formula:calculating average +.>And average +.>Sending the data to a data analysis unit;
the data storage unit is used for storing the standard value of the oxygen and water vapor content in the vacuumized sealed bottle/tank to be filled
The data analysis unit is used for analyzing the obtained detection dataAnd standard value->In contrast, when->If so, judging that the product is a defective product; when->If so, judging that the product is qualified;
the motor driving unit is used for driving the unqualified product removing device to operate.
As the preferable mode of the embodiment, the microcontroller adopts an embedded controller, and can be an ARKA-2004 type controller or an LK14-12/90 type controller.
The embodiment of the invention also provides a method for detecting the water and gas content in the sealed bottle/tank, which comprises the following steps:
s1, placing a sealed bottle/tank to be tested on a sealed bottle/tank assembly line from a product inlet, and entering a detection area along with the operation of the sealed bottle/tank assembly line;
s2, sequentially passing through a plurality of groups of detection devices arranged on a sealing bottle/tank assembly line, obtaining a group of measured values after each group of detection devices pass through, and immediately transmitting the measured data values to a data processing unit by the detection devices;
s3, after the data processing unit processes a plurality of groups of data, an average value of the water and gas content in the sealed bottle/tank to be detected is obtainedAnd average +.>Transmitting to a data analysis unit;
s4, the data analysis unit averagesStandard value in data storage unit->Making a comparison determination whenIf so, judging that the product is a defective product; when->If so, judging that the product is qualified;
s5, if the sealed bottle to be detected is judged to be unqualified, pushing the sealed bottle to a stacking area of unqualified products by an unqualified product removing device, and entering an unqualified product area; if the sealed bottle to be tested is judged to be qualified, the unqualified product removing device does not act, and the sealed bottle to be tested continuously enters the qualified product area from the product outlet along the current assembly line.
Compared with the prior art, the invention has the beneficial effects that:
1. the TDLAS-based sealed bottle/tank water vapor detection device utilizes the laser detection technology, and sets a plurality of groups of laser emission devices and laser receiving devices on two sides of a sealed bottle/tank assembly line respectively, wherein each group of laser emission devices and each group of laser receiving devices can measure the content data of oxygen and water vapor in one group of sealed bottles/tanks, average values are obtained through the plurality of groups of measurement data, the content data of the oxygen and the water vapor in the sealed bottles/tanks are obtained, and the average value content data are compared with preset standards to determine whether the content of the oxygen and the water vapor in the sealed bottles/tanks is qualified or not, so that the data are more accurate and the error rate is lower.
2. According to the invention, the measured value of the vacuum bottle in the air is used as a standard contrast value, so that the influence of water gas in the air on the measured data is eliminated, the detection equipment and the optical path of the device are unchanged, and the measurement deviation caused by equipment replacement is avoided.
Drawings
FIG. 1 is a schematic diagram of a TDLAS-based sealed bottle/can moisture detection apparatus of the present invention;
FIG. 2 is a schematic block diagram of a TDLAS-based sealed bottle/can moisture detection apparatus of the present invention;
fig. 3 is a flowchart of the operation of the TDLAS based sealed bottle/canister moisture detection apparatus of the present invention.
The figure shows: 1. the sealing bottle/tank assembly line, 2, a laser emitting device, 3, a laser emitting device, 4, a mounting column, 5, a reject removing device, 6, a microcontroller, 61, a data processing unit, 62, a data storage unit, 63, a data analysis unit, 64, a motor driving unit, 7, a product inlet and a product outlet, 8, a product outlet, 9 and a reject stacking area.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1 to 2, an embodiment of the present invention provides a TDLAS-based sealed bottle/tank moisture detection device, which specifically includes a sealed bottle/tank assembly line 1, and a laser emitting device 2 and a laser receiving device 3 are respectively disposed on two sides of the sealed bottle/tank assembly line 1. In this embodiment, the laser emitting device 2 and the laser receiving device 3 are all a plurality of, and a plurality of laser emitting devices 2 are evenly arranged along the length direction of the sealed bottle/jar assembly line 1, and the bottom of each laser emitting device 2 is all equipped with the installation post 4 of height-adjustable, and a plurality of laser receiving device 3 is all installed on the installation post 4 of height-adjustable, and every laser emitting device 2 all corresponds with a laser receiving device 3, and the height-adjustable of installation post 4 can be according to the size adjustment height of sealed bottle that awaits measuring, installs a plurality of laser receiving device 3 on a height-adjustable installation post 4, and the direction that every laser receiving device 3 was installed all corresponds with its corresponding laser emitting device 2. In this embodiment, each laser emitting device 2 has a corresponding laser receiving device 3, and the corresponding laser emitting device 2 and the corresponding laser receiving device 3 form a group of oxygen and water vapor content detecting devices. In this embodiment, there are 5 groups of detection devices (each group of detection devices includes one laser emitting device 2 and one corresponding laser receiving device 3), and it is of course possible to increase or decrease according to practical situations. Each laser receiving device 4 is connected to a signal input of the microcontroller 6 via a signal line. A reject removing device 5 is further provided outside the sealed bottle/tank line 1, and in this embodiment, the reject removing device 5 may be a movable mechanical arm or a mechanical gripper or an intelligent robot, or the like. The defective products are removed by electrically connecting the defective product removing device 5 with the signal output end of the microcontroller 6.
Referring to fig. 1, in this embodiment, a sealed bottle/tank assembly line 1 is in a U-shaped structure, laser emitting devices 2 are uniformly distributed on the outer side of the U-shaped sealed bottle/tank assembly line 1, and a plurality of laser receiving devices 2 are disposed on the inner side of the U-shaped sealed bottle/tank assembly line 1, wherein a reject removing device 5 is also mounted on the inner side of the U-shaped sealed bottle/tank assembly line 1. In this embodiment, five laser emission devices 2 are disposed along the outer side of the U-shaped sealed bottle/tank assembly line 1, specifically, one laser emission device 2 is disposed at the arc elbow of the U-shaped sealed bottle/tank assembly line 1, and two laser emission devices 2 are disposed on each of two straight line segment assembly lines on two sides of the arc elbow. Five laser receiving devices 3 are arranged on the inner side of the U-shaped sealed bottle/tank assembly line 1, and the five laser receiving devices 3 are all arranged on the same mounting column 4 with adjustable height, wherein the mounting column 4 with adjustable height is arranged on the inner side of an arc-shaped elbow of the U-shaped sealed bottle/tank assembly line 1. The two straight line assembly lines of the U-shaped sealed bottle/tank assembly line 1 are respectively provided with a product inlet 7 and a product outlet 8, a defective product stacking area 9 is arranged at a position, close to the product outlet 8, on the U-shaped sealed bottle/tank assembly line 1, and a defective product removing device 5 is arranged at a position, close to the defective product stacking area 9, on the inner side of the U-shaped sealed bottle/tank assembly line 1. When the sealed bottle to be tested is judged to be a qualified product, the unqualified product removing device 5 does not act, and the sealed bottle to be tested continuously enters the product outlet 8 along the current assembly line; when the sealed bottle to be tested is judged as a defective product, the defective product removing device 5 moves the sealed bottle to be tested to the defective product stacking area 9.
Referring to fig. 2, in the present embodiment, the microcontroller 6 includes a data processing unit 61, a data storage unit 62, a data analysis unit 63, and a motor driving unit 64; wherein, the data processing unit 61 sends the data returned by the laser receiving device according to the sequence and the calculation formula:calculating average +.>And average +.>To the data analysis unit 63;the data storage unit 62 is used for storing standard values of oxygen and water vapor contents in the vacuumized sealed bottle/tank to be filled>The data analysis unit 63 is used for analyzing the obtained detection data +.>And standard value->In contrast, when->If so, judging that the product is a defective product; when->If so, judging that the product is qualified; the motor driving unit 64 is used for driving the mechanical arm 5 to operate. In this embodiment, the microcontroller 6 is an embedded controller, which may be an ACRS-CON-A type controller.
In this embodiment, each group of detection devices respectively measures content data a of oxygen and water vapor content in a group of sealed bottles/cans according to the running sequence of the sealed bottles/cans in a pipeline, and according to a calculation formula:(in this example, n=5) calculate the average +.>Namely the content value of the gas to be measured in the sealed bottle/tank.
In this embodiment, a plurality of (in this embodiment, 20) vacuumized sealed bottles to be filled are randomly extracted as samples, and are placed on a U-shaped sealed bottle/tank assembly line 1 to be detected by a detection device, and the content of the samples is averaged to obtainWill->As a standard value.
Referring to fig. 3, the embodiment of the invention further provides a method for detecting the water and gas content in a sealed bottle/can, which specifically comprises the following steps:
the sealed bottle/can to be tested is put on the sealed bottle/can pipeline 1 from the product inlet 7, enters a detection area along with the operation of the sealed bottle/can pipeline, sequentially passes through five groups of detection devices (each group of detection devices comprises a laser emitting device 2 and a laser receiving device 3 corresponding to the laser emitting device), and obtains measured values, wherein each laser receiving device 3 immediately transmits the measured data values to the data processing unit 61 through a signal line, and the data processing unit 61 processes the average value of the five groups of dataTo the data analysis unit 63, the data analysis unit 63 will obtain an average value +.>Standard value stored in the data storage unit 62 +.>Make a comparison decision when->If so, judging that the product is a defective product; when->If so, judging that the product is qualified; if the sealed bottle to be detected is judged to be unqualified, the motor driving unit 64 starts the unqualified product removing device 5 to push the sealed bottle to the unqualified product stacking area 9 and enter the unqualified product area; if it is determined that the sealed bottle to be tested is acceptable, the reject removing device 5 is not operated, and the sealed bottle to be tested continues to enter the acceptable product region (in the figure) from the product outlet 8 along the current flow lineNot labeled).
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (3)

1. TDLAS-based sealed bottle/tank water vapor detection device is characterized in that: the device comprises a sealed bottle/tank assembly line, wherein a laser emitting device and a laser receiving device are respectively arranged at two sides of the sealed bottle/tank assembly line; the number of the laser emitting devices and the number of the laser receiving devices are several; the laser emission devices are uniformly distributed along the length direction of the sealed bottle/tank assembly line, and each laser emission device corresponds to one laser receiving device; each laser receiving device is connected to the signal input end of the microcontroller through a signal wire; a defective product removing device is further arranged outside the sealed bottle/tank assembly line, and the defective product removing device is electrically connected with a signal output end of the microcontroller;
the sealing bottle/tank assembly line is of a U-shaped structure, a plurality of laser emission devices are uniformly distributed on the outer side of the U-shaped sealing bottle/tank assembly line, a plurality of laser receiving devices are arranged on the inner side of the U-shaped sealing bottle/tank assembly line, and the defective product removing device is arranged on the inner side of the U-shaped sealing bottle/tank assembly line;
the two straight line assembly lines of the U-shaped sealed bottle/tank assembly line are respectively provided with a product inlet and a product outlet, a defective product stacking area is arranged at a position, close to the product outlet, on the U-shaped sealed bottle/tank assembly line, and the defective product removing device is arranged at a position, close to the defective product stacking area, on the inner side of the U-shaped sealed bottle/tank assembly line;
the bottom of each laser emission device is provided with a mounting column with adjustable height; the laser receiving devices are arranged on a mounting column with adjustable height;
the microcontroller includes data processingThe device comprises a unit, a data storage unit, a data analysis unit and a motor driving unit; the data processing unit is used for sequentially transmitting the data returned by the laser receiving device according to a calculation formula:calculating average +.>And average +.>Sending the data to a data analysis unit;
the data storage unit is used for storing the standard value of the oxygen and water vapor content in the vacuumized sealed bottle/tank to be filled
The data analysis unit is used for analyzing the obtained detection dataAnd standard value->In contrast, when->If so, judging that the product is a defective product; when->If so, judging that the product is qualified;
the motor driving unit is used for driving the unqualified product removing device to operate.
2. The TDLAS based sealed bottle/canister moisture detection apparatus of claim 1, wherein: the microcontroller adopts an embedded controller, and can be an ACRS-CON-A type controller.
3. A method for detecting the moisture content in a sealed bottle/can, which adopts the TDLAS-based sealed bottle/can moisture detection device as claimed in any one of claims 1-2; the method is characterized by comprising the following steps of:
s1, placing a sealed bottle/tank to be tested on a sealed bottle/tank assembly line from a product inlet, and entering a detection area along with the operation of the sealed bottle/tank assembly line;
s2, sequentially passing through a plurality of groups of detection devices arranged on a sealing bottle/tank assembly line, obtaining a group of measured values after each group of detection devices pass through, and immediately transmitting the measured data values to a data processing unit by the detection devices;
s3, after the data processing unit processes a plurality of groups of data, an average value of the water and gas content in the sealed bottle/tank to be detected is obtainedAnd average +.>Transmitting to a data analysis unit;
s4, the data analysis unit averagesStandard value in data storage unit->Make a comparison decision when->If so, judging that the product is a defective product; when->If so, judging that the product is qualified;
s5, if the sealed bottle to be detected is judged to be unqualified, pushing the sealed bottle to a stacking area of unqualified products by an unqualified product removing device, and entering an unqualified product area; if the sealed bottle to be tested is judged to be qualified, the unqualified product removing device does not act, and the sealed bottle to be tested continuously enters the qualified product area from the product outlet along the current assembly line.
CN201810999739.6A 2018-08-30 2018-08-30 TDLAS-based sealed bottle/tank water vapor detection device and detection method thereof Active CN109001156B (en)

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CN109738392B (en) * 2019-01-29 2021-03-02 中南大学 Compressed sensing reconstruction method and system for TDLAS (tunable diode laser absorption Spectroscopy) online detection of oxygen concentration in bottle
CN115265927B (en) * 2022-09-26 2022-12-23 南京旭奥科技有限公司 Container sealing detection method and detection device

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CN208888134U (en) * 2018-08-30 2019-05-21 武汉阿卡瑞思光电自控有限公司 A kind of air-tight bottle based on TDLAS/tank aqueous vapor detection device

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