CN113419030A - Carbon emission measurement and analysis device - Google Patents

Carbon emission measurement and analysis device Download PDF

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Publication number
CN113419030A
CN113419030A CN202110240181.5A CN202110240181A CN113419030A CN 113419030 A CN113419030 A CN 113419030A CN 202110240181 A CN202110240181 A CN 202110240181A CN 113419030 A CN113419030 A CN 113419030A
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fixedly connected
processor
casing
flow sensor
sealing plate
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陈光玖
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/0004—Gaseous mixtures, e.g. polluted air
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/34—Purifying; Cleaning
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/40—Concentrating samples
    • G01N1/4077—Concentrating samples by other techniques involving separation of suspended solids
    • G01N2001/4088—Concentrating samples by other techniques involving separation of suspended solids filtration

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  • General Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
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  • Food Science & Technology (AREA)
  • Combustion & Propulsion (AREA)
  • Fluid Mechanics (AREA)
  • Biomedical Technology (AREA)
  • Molecular Biology (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

The invention discloses a carbon emission measurement and analysis device which comprises a shell, wherein the top of the shell is fixedly connected with a threaded pipe, the inner cavity of the threaded pipe is in threaded connection with an air inlet pipe, two sides of the top of the inner cavity of the shell are fixedly connected with support frames, and the bottom of each support frame is fixedly connected with a suction fan. According to the invention, through the matched use of the air inlet pipe, the support frame, the suction fan, the one-way air inlet valve, the first sealing plate, the air flow sensor, the second sealing plate, the third sealing plate, the carbon monoxide flow sensor, the carbon dioxide flow sensor, the one-way exhaust valve, the storage battery, the circuit board, the USB interface, the charging interface, the networking module, the processor, the storage module, the signal transceiving module, the filter, the display screen and the control key, the portable purpose can be realized, the sampling is not needed, the carbon emission can be detected anytime and anywhere, the detection efficiency is improved, and great convenience is brought to the detection work.

Description

Carbon emission measurement and analysis device
Technical Field
The invention relates to the technical field of air detection, in particular to a carbon emission measurement and analysis device.
Background
Carbon emissions are a general or short term for greenhouse gas emissions, the most predominant gas in greenhouse gases is carbon dioxide, and carbon is therefore used to represent greenhouse gases; the carbon emission calculation is mainly divided into an individual scale, a product scale and an enterprise scale; the individual carbon footprint is used for measuring the carbon emission generated by all activities in the daily life of an individual and is the refinement of the carbon footprint under the individual scale; the product carbon footprint is mainly used for calculating the emission of greenhouse gases of commodities and services in the whole life cycle, relates to the whole life cycle of products, is one of the most main scales of the current carbon emission calculation, and is compared with the enterprise (organization) carbon footprint, including the emission of greenhouse gases caused by non-productive activities; its volume of current carbon emission measurement analytical equipment is great, and is not portable, can not carry out comprehensive detection to the air, can only carry out sample detection to reduce detection efficiency, brought very big inconvenience for detection achievement.
Disclosure of Invention
The invention aims to provide a carbon emission metering and analyzing device which has the advantage of convenience in use and solves the problems that the existing carbon emission metering and analyzing device is large in size, inconvenient to carry, incapable of comprehensively detecting air and only capable of sampling and detecting, so that the detection efficiency is reduced and great inconvenience is brought to detection work.
In order to achieve the purpose, the invention provides the following technical scheme: a carbon emission measurement and analysis device comprises a shell, wherein a threaded pipe is fixedly connected to the top of the shell, an air inlet pipe is in threaded connection with the inner cavity of the threaded pipe, support frames are fixedly connected to both sides of the top of the inner cavity of the shell, a suction fan is fixedly connected to the bottom of each support frame, a one-way air inlet valve is arranged in the inner cavity of the shell and below the suction fan, first sealing plates are fixedly connected to the tops of both sides of the one-way air inlet valve, one side, away from the one-way air inlet valve, of each first sealing plate is fixedly connected with the inner wall of the shell, an air flow sensor is communicated with the bottom of each one-way air inlet valve, second sealing plates are fixedly connected to the bottoms of both sides of the air flow sensor, one side, away from the air flow sensor, of each second sealing plate is fixedly connected with the inner wall of the shell, and a third sealing plate is fixedly connected to the bottom of the inner cavity of the shell, a carbon monoxide flow sensor and a carbon dioxide flow sensor are respectively and fixedly connected with the two sides of the inner cavity of the shell and above the third sealing plate, a one-way exhaust valve is communicated with the back surface of the shell and above the third sealing plate, a storage battery is fixedly connected with the bottom of the inner cavity of the shell, a circuit board is fixedly connected with the back surface of the inner cavity of the shell and above the storage battery through bolts, the top and the bottom of the left side of the surface of the circuit board are respectively and fixedly connected with a USB interface and a charging interface, the right side of the charging interface is electrically connected with the storage battery through a lead, a networking module is fixedly connected with the right side of the surface of the circuit board, the top and the bottom of the left side of the networking module are respectively and fixedly connected with a processor and a storage module, and the left sides of the surface of the circuit board and the processor and the storage module are respectively and fixedly connected with a signal transceiver module and a filter, the top of the surface of the shell is fixedly connected with a display screen, and the bottom of the surface of the shell is fixedly connected with a control key;
the input end of the processor is unidirectionally and electrically connected with the output end of the storage battery, the input end of the storage battery is unidirectionally and electrically connected with the output end of the charging interface, the processor is electrically connected with the USB interface in a bidirectional way, the processor is electrically connected with the storage module in a bidirectional way, the processor is electrically connected with the networking module in a bidirectional way, the output end of the processor is electrically connected with the input end of the filter in a unidirectional way, the output end of the filter is unidirectionally and electrically connected with the input end of the signal transceiver module, the processor is bidirectionally and electrically connected with the signal transceiver module, the input end of the signal transceiver module is respectively and unidirectionally electrically connected with the output ends of the air flow sensor, the carbon monoxide flow sensor and the carbon dioxide flow sensor, the output end of the processor is electrically connected with the input end of the display screen in a one-way mode, and the input end of the processor is electrically connected with the output end of the control key in a one-way mode.
Preferably, an air inlet hole is formed in the axis of the top of the shell and communicated with the threaded pipe.
Preferably, the top of the air inlet pipe is bonded with a dust screen through an adhesive, and the cross section of the air inlet pipe is in a horn shape.
Preferably, the top on the right side of the shell is fixedly connected with a hanging ring, and the surface of the hanging ring is fixedly connected with a hanging rope.
Preferably, four corners of the back of the shell are fixedly connected with rubber pads, and anti-skid grains are arranged on the back of the rubber pads.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through the matched use of the air inlet pipe, the support frame, the suction fan, the one-way air inlet valve, the first sealing plate, the air flow sensor, the second sealing plate, the third sealing plate, the carbon monoxide flow sensor, the carbon dioxide flow sensor, the one-way exhaust valve, the storage battery, the circuit board, the USB interface, the charging interface, the networking module, the processor, the storage module, the signal transceiving module, the filter, the display screen and the control key, the portable purpose can be realized, the sampling is not needed, the carbon emission can be detected anytime and anywhere, the detection efficiency is improved, and great convenience is brought to the detection work.
2. According to the invention, the air inlet holes are formed, so that the air inlet work can be better ensured, the detection work can be ensured, large particles in the air can be filtered by arranging the dustproof net, the detection work can be better ensured, the equipment can be better carried by arranging the hanging ring and the hanging rope, the detection work can be better ensured, the equipment can be protected in a buffering manner by arranging the rubber pad, and the service life of the equipment is prolonged.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic front view of the structure of the present invention;
fig. 3 is a schematic diagram of the system of the present invention.
In the figure: 1. a housing; 2. a threaded pipe; 3. an air inlet pipe; 4. a support frame; 5. a suction fan; 6. a one-way intake valve; 7. a first sealing plate; 8. an air flow sensor; 9. a second sealing plate; 10. a third sealing plate; 11. a carbon monoxide flow sensor; 12. a carbon dioxide flow sensor; 13. a one-way exhaust valve; 14. a storage battery; 15. a circuit board; 16. a USB interface; 17. a charging interface; 18. a networking module; 19. a processor; 20. a storage module; 21. a signal transceiving module; 22. a filter; 23. a display screen; 24. a control key; 25. a dust screen; 26. hanging a ring; 27. and (7) hanging a rope.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The components of the present invention are all standard components or components known to those skilled in the art, and the structure and principle thereof can be known to those skilled in the art through technical manuals or through routine experimentation.
Referring to fig. 1-3, a carbon emission measurement and analysis device comprises a housing 1, a hanging ring 26 fixedly connected to the top of the right side of the housing 1, a hanging rope 27 fixedly connected to the surface of the hanging ring 26, the device can be better carried by arranging the hanging ring 26 and the hanging rope 27, the detection work can be better guaranteed, rubber pads are fixedly connected to four corners of the back of the housing 1, anti-skid patterns are arranged on the back of the rubber pads, the device can be protected by buffering by arranging the rubber pads, the service life of the device is prolonged, a threaded pipe 2 is fixedly connected to the top of the housing 1, an air inlet hole is formed in the axis of the top of the housing 1 and communicated with the threaded pipe 2, the air inlet work can be better guaranteed by arranging the air inlet hole, the detection work can be guaranteed, an air inlet pipe 3 is in threaded connection with the inner cavity of the threaded pipe 2, a dust screen 25 is bonded to the top of the air inlet pipe 3 through an adhesive, the cross section of the air inlet pipe 3 is horn-shaped, large particles in the air can be filtered by arranging a dust screen 25, the detection work is better ensured to be carried out, both sides of the top of an inner cavity of the shell 1 are fixedly connected with supporting frames 4, the bottom of the supporting frame 4 is fixedly connected with a suction fan 5, an one-way air inlet valve 6 is arranged in the inner cavity of the shell 1 and below the suction fan 5, the tops of both sides of the one-way air inlet valve 6 are fixedly connected with first sealing plates 7, one sides of the first sealing plates 7, far away from the one-way air inlet valve 6, are fixedly connected with the inner wall of the shell 1, the bottom of the one-way air inlet valve 6 is communicated with an air flow sensor 8, the bottoms of both sides of the air flow sensor 8 are fixedly connected with second sealing plates 9, one sides of the second sealing plates 9, far away from the air flow sensor 8, are fixedly connected with the inner wall of the shell 1, and the bottom of the inner cavity of the shell 1 is fixedly connected with third sealing plates 10, a carbon monoxide flow sensor 11 and a carbon dioxide flow sensor 12 are respectively and fixedly connected with the two sides of the inner cavity of the shell 1 and above the third sealing plate 10, a one-way exhaust valve 13 is communicated with the back of the shell 1 and above the third sealing plate 10, a storage battery 14 is fixedly connected with the bottom of the inner cavity of the shell 1, a circuit board 15 is fixedly connected with the back of the inner cavity of the shell 1 and above the storage battery 14 through bolts, the top and the bottom of the left side of the surface of the circuit board 15 are respectively and fixedly connected with a USB interface 16 and a charging interface 17, the right side of the charging interface 17 is electrically connected with the storage battery 14 through a lead, a networking module 18 is fixedly connected with the right side of the surface of the circuit board 15, a processor 19 and a storage module 20 are respectively and fixedly connected with the top and the bottom of the surface of the circuit board 15 and on the left side of the processor 19 and the storage module 20, and a signal transceiver module 21 and a filter 22 are respectively and fixedly connected with the left side of the surface of the circuit board 15 and on the processor 19 and the left side of the storage module 20, the top of the surface of the shell 1 is fixedly connected with a display screen 23, and the bottom of the surface of the shell 1 is fixedly connected with a control key 24;
the input end of the processor 19 is unidirectionally electrically connected with the output end of the storage battery 14, the input end of the storage battery 14 is unidirectionally electrically connected with the output end of the charging interface 17, the processor 19 is bidirectionally electrically connected with the USB interface 16, the processor 19 is bidirectionally electrically connected with the storage module 20, the processor 19 is bidirectionally electrically connected with the networking module 18, the output end of the processor 19 is unidirectionally electrically connected with the input end of the filter 22, the output end of the filter 22 is unidirectionally electrically connected with the input end of the signal transceiver module 21, the processor 19 is bidirectionally electrically connected with the signal transceiver module 21, the input end of the signal transceiver module 21 is unidirectionally electrically connected with the output ends of the air flow sensor 8, the carbon monoxide flow sensor 11 and the carbon dioxide flow sensor 12 respectively, the output end of the processor 19 is unidirectionally electrically connected with the input end of the display screen 23, and the input end of the processor 19 is unidirectionally electrically connected with the output end of the control key 24, through the air-supply line 3, support frame 4, suction fan 5, one-way admission valve 6, first closing plate 7, air mass flow sensor 8, second closing plate 9, third closing plate 10, carbon monoxide flow sensor 11, carbon dioxide flow sensor 12, one-way discharge valve 13, battery 14, circuit board 15, USB interface 16, interface 17 charges, networking module 18, treater 19, storage module 20, signal transceiver module 21, wave filter 22, display screen 23 and control button 24's cooperation is used, can realize portable's purpose, do not need the sample, the detection of carrying out carbon emission that can be anytime and anywhere, detection efficiency is improved, bring very big facility for detection work.
The control circuit of the present invention can be implemented by simple programming by those skilled in the art, which is common knowledge in the art, and the present invention is mainly used to protect mechanical devices, so the present invention does not explain the control manner and circuit connection in detail.
When the device is used, the device is opened, then the work of the suction fan 5 is controlled through the processor 19, the suction fan 5 works to generate suction force to enable air to enter an inner cavity of the device, the air enters an inner cavity of the air flow sensor 8 through the one-way air inlet valve 6, the entering air flow is detected through the air flow sensor 8, then the carbon content in the air with the flow measured is detected through the carbon monoxide flow sensor 11 and the carbon dioxide flow sensor 12, the calculation is carried out through the processor 19, the detection result is displayed through the display screen 23, and the detected air is discharged by opening the one-way exhaust valve 13.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (5)

1.一种碳排放计量分析装置，包括外壳（1），其特征在于：所述外壳（1）的顶部固定连接有螺纹管（2），所述螺纹管（2）的内腔螺纹连接有进风管（3），所述外壳（1）内腔顶部的两侧均固定连接有支撑架（4），所述支撑架（4）的底部固定连接有吸风机（5），所述外壳（1）的内腔且位于吸风机（5）的下方设置有单向进气阀（6），所述单向进气阀（6）的两侧的顶部均固定连接有第一密封板（7），所述第一密封板（7）远离单向进气阀（6）的一侧与外壳（1）的内壁固定连接，所述单向进气阀（6）的底部连通有空气流量传感器（8），所述空气流量传感器（8）两侧的底部均固定连接有第二密封板（9），所述第二密封板（9）远离空气流量传感器（8）的一侧与外壳（1）的内壁固定连接，所述外壳（1）内腔的底部固定连接有第三密封板（10），所述外壳（1）内腔的两侧且位于第三密封板（10）的上方分别固定连接有一氧化碳流量传感器（11）和二氧化碳流量传感器（12），所述外壳（1）的背面且位于第三密封板（10）的上方连通有单向排气阀（13），所述外壳（1）内腔的底部固定连接有蓄电池（14），所述外壳（1）内腔的背面且位于蓄电池（14）的上方通过螺栓固定连接有电路板（15），所述电路板（15）表面左侧的顶部和底部分别固定连接有USB接口（16）和充电接口（17），所述充电接口（17）的右侧通过导线与蓄电池（14）电性连接，所述电路板（15）表面的右侧固定连接有联网模块（18），所述电路板（15）的表面且位于联网模块（18）左侧的顶部和底部分别固定连接有处理器（19）和存储模块（20），所述电路板（15）的表面且位于处理器（19）和存储模块（20）的左侧分别固定连接有信号收发模块（21）和滤波器（22），所述外壳（1）表面的顶部固定连接有显示屏（23），所述外壳（1）表面的底部固定连接有控制按键（24）；1. A carbon emission measurement and analysis device, comprising a casing (1), characterized in that: a threaded pipe (2) is fixedly connected to the top of the casing (1), and an inner cavity of the threaded pipe (2) is threadedly connected with a threaded pipe (2). The air inlet pipe (3), the two sides of the top of the inner cavity of the casing (1) are fixedly connected with a support frame (4), and the bottom of the support frame (4) is fixedly connected with a suction fan (5). The inner cavity of (1) and below the suction fan (5) is provided with a one-way intake valve (6), the tops of both sides of the one-way intake valve (6) are fixedly connected with a first sealing plate ( 7), the side of the first sealing plate (7) away from the one-way intake valve (6) is fixedly connected with the inner wall of the housing (1), and the bottom of the one-way intake valve (6) is connected with the air flow A sensor (8), the bottoms of both sides of the air flow sensor (8) are fixedly connected with a second sealing plate (9), the side of the second sealing plate (9) away from the air flow sensor (8) and the casing The inner wall of (1) is fixedly connected, the bottom of the inner cavity of the casing (1) is fixedly connected with a third sealing plate (10), and both sides of the inner cavity of the outer casing (1) are located at the bottom of the third sealing plate (10). A carbon monoxide flow sensor (11) and a carbon dioxide flow sensor (12) are respectively fixedly connected above, and a one-way exhaust valve (13) is communicated with the back of the casing (1) and is located above the third sealing plate (10), so A battery (14) is fixedly connected to the bottom of the inner cavity of the casing (1), and a circuit board (15) is fixedly connected to the back of the inner cavity of the casing (1) and located above the battery (14) by bolts. (15) The top and bottom of the left side of the surface are respectively fixedly connected with a USB interface (16) and a charging interface (17), and the right side of the charging interface (17) is electrically connected to the battery (14) through wires, and the circuit A networking module (18) is fixedly connected to the right side of the surface of the board (15), and a processor (19) and a storage device are fixedly connected to the top and bottom of the surface of the circuit board (15) and located on the left side of the networking module (18), respectively. A module (20), a signal transceiver module (21) and a filter (22) are fixedly connected to the surface of the circuit board (15) and located on the left side of the processor (19) and the storage module (20), respectively, and the housing (1) A display screen (23) is fixedly connected to the top of the surface, and a control button (24) is fixedly connected to the bottom of the surface of the casing (1); 所述处理器（19）的输入端与蓄电池（14）的输出端单向电性连接，所述蓄电池（14）的输入端与充电接口（17）的输出端单向电性连接，所述处理器（19）与USB接口（16）双向电性连接，所述处理器（19）与存储模块（20）双向电性连接，所述处理器（19）与联网模块（18）双向电性连接，所述处理器（19）的输出端与滤波器（22）的输入端单向电性连接，所述滤波器（22）的输出端与信号收发模块（21）的输入端单向电性连接，所述处理器（19）与信号收发模块（21）双向电性连接，所述信号收发模块（21）的输入端分别与空气流量传感器（8）、一氧化碳流量传感器（11）和二氧化碳流量传感器（12）的输出端单向电性连接，所述处理器（19）的输出端与显示屏（23）的输入端单向电性连接，所述处理器（19）的输入端与控制按键（24）的输出端单向电性连接。The input end of the processor (19) is unidirectionally electrically connected to the output end of the battery (14), and the input end of the battery (14) is unidirectionally electrically connected to the output end of the charging interface (17). The processor (19) is electrically bidirectionally connected to the USB interface (16), the processor (19) is electrically bidirectionally connected to the storage module (20), and the processor (19) is electrically bidirectionally connected to the networking module (18). connection, the output end of the processor (19) is unidirectionally electrically connected to the input end of the filter (22), and the output end of the filter (22) is unidirectionally electrically connected to the input end of the signal transceiver module (21). The processor (19) is electrically connected in both directions with the signal transceiver module (21), and the input ends of the signal transceiver module (21) are respectively connected with the air flow sensor (8), the carbon monoxide flow sensor (11) and the carbon dioxide The output end of the flow sensor (12) is unidirectionally electrically connected, the output end of the processor (19) is unidirectionally electrically connected to the input end of the display screen (23), and the input end of the processor (19) is electrically connected to the The output end of the control button (24) is electrically connected in one direction. 2.根据权利要求1所述的一种碳排放计量分析装置，其特征在于：所述外壳（1）顶部的轴心处开设有进风孔，进风孔与螺纹管（2）连通。2 . The carbon emission measurement and analysis device according to claim 1 , wherein an air inlet hole is opened at the axial center of the top of the casing ( 1 ), and the air inlet hole is communicated with the threaded pipe ( 2 ). 3 . 3.根据权利要求1所述的一种碳排放计量分析装置，其特征在于：所述进风管（3）的顶部通过粘合剂粘结有防尘网（25），所述进风管（3）的横截面为喇叭形。3. A carbon emission measurement and analysis device according to claim 1, characterized in that: the top of the air inlet pipe (3) is bonded with a dust filter (25) through an adhesive, and the air inlet pipe The cross section of (3) is flared. 4.根据权利要求1所述的一种碳排放计量分析装置，其特征在于：所述外壳（1）右侧的顶部固定连接有挂环（26），所述挂环（26）的表面固定连接有挂绳（27）。The carbon emission measurement and analysis device according to claim 1, characterized in that: a hanging ring (26) is fixedly connected to the top of the right side of the casing (1), and the surface of the hanging ring (26) is fixed A lanyard (27) is attached. 5.根据权利要求1所述的一种碳排放计量分析装置，其特征在于：所述外壳（1）背面的四角均固定连接有橡胶垫，橡胶垫的背面设置有防滑纹。5 . The carbon emission measurement and analysis device according to claim 1 , wherein the four corners of the back of the casing ( 1 ) are fixedly connected with rubber pads, and the back of the rubber pad is provided with anti-skid patterns. 6 .
CN202110240181.5A 2021-03-04 2021-03-04 Carbon emission measurement and analysis device Pending CN113419030A (en)

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CN202110240181.5A CN113419030A (en) 2021-03-04 2021-03-04 Carbon emission measurement and analysis device

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Application publication date: 20210921