CN112816273A - Gas rapid sampling processing air chamber - Google Patents
Gas rapid sampling processing air chamber Download PDFInfo
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- CN112816273A CN112816273A CN202011605402.6A CN202011605402A CN112816273A CN 112816273 A CN112816273 A CN 112816273A CN 202011605402 A CN202011605402 A CN 202011605402A CN 112816273 A CN112816273 A CN 112816273A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/02—Devices for withdrawing samples
- G01N1/22—Devices for withdrawing samples in the gaseous state
- G01N1/24—Suction devices
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention relates to the technical field of gas collection and signal processing, and discloses a gas rapid sampling processing gas chamber which comprises a gas chamber body, wherein a sampling cavity is formed in the gas chamber body, the sampling cavity is connected with a fixed cavity, a gas sensor is fixedly arranged in the fixed cavity, a control circuit board is fixed on the gas chamber body and comprises a signal processing module and a main control module which are connected together, the gas sensor is electrically connected with the signal processing module, and the signal processing module processes and converts an analog signal collected by the gas sensor into a digital signal and amplifies the digital signal and then sends the digital signal to the main control module; the device realizes the whole process of gas acquisition, signal processing and signal interaction with monitoring equipment to be detected by combining the control circuit board with the gas chamber body; and can finish the processing of the sampled signal fast; meanwhile, the collection cavity and the air passage are respectively arranged in the air chamber body, so that collection can be completed quickly; meanwhile, the temperature control module keeps the air chamber body at a constant temperature, so that the acquired data is more accurate.
Description
Technical Field
The invention relates to the technical field of gas acquisition and signal processing, in particular to a gas rapid sampling processing chamber.
Background
Along with environmental problem's is more and more serious, environmental improvement receives people's attention with monitoring more and more, all kinds of environmental monitoring equipment are in due transit, wherein correspond atmospheric gas's collection and real-time supervision equipment also a lot, different monitoring equipment adopts different air chambers to arrange different sensor and sampling circuit again, current air chamber only is to single monitoring equipment, can not adapt the monitoring equipment of the majority, and can't carry out quick sampling and processing of gas sampling signal.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a gas rapid sampling processing gas chamber.
In order to achieve the above purpose, the invention provides the following technical scheme:
the utility model provides a gaseous quick sampling processing air chamber, includes the air chamber body, the sampling chamber has been seted up on the air chamber body, the sampling chamber is connected with fixed chamber, fixed intracavity is fixed and is provided with a plurality of gas sensor, be fixed with control circuit board on the air chamber body, last signal processing module and the host system including linking together of control circuit board, gas sensor with the signal processing module electricity is connected, signal processing module will analog signal processing who gas sensor gathered is converted into digital signal and enlargies the back and sends for host system, host system includes main operation chip.
In the present invention, preferably, the control circuit board further includes a temperature control module, and the temperature control module is connected to the main control module and is configured to control the temperature of the air chamber body to be constant.
In the present invention, preferably, the signal processing module includes a first processing circuit group, a second processing circuit group and a third processing circuit group, the first processing circuit group is connected to the first gas sensor, the second processing circuit group is connected to the second gas sensor, and the third processing circuit group is used for connecting the third gas sensor.
In the present invention, preferably, the first processing circuit group includes a switch circuit and a signal filter circuit, the switch circuit is connected between the pin 1 of the first gas sensor and the main control module, and the signal filter circuit is connected between the pin 2 of the first gas sensor and the main control module.
In the present invention, preferably, the switch circuit includes a switch tube, a gate of the switch tube is connected to pin No. 62 of the main operation chip of the main control module, a source of the switch tube is connected to voltage, and a drain of the switch tube is connected to pin No. 1 of the first gas sensor.
In the present invention, preferably, the second processing circuit group includes a negative feedback circuit and a secondary amplification circuit, the negative feedback circuit is connected between the pin 1 and the pin 3 of the second gas sensor, and the pin 2 is connected to the main operation chip through the secondary amplification circuit.
In the present invention, it is preferable that the third processing circuit group includes an amplifier circuit connected between the pins No. 3 and No. 4 of the third gas sensor and the main operation chip.
In the present invention, preferably, the control circuit board further includes a communication module, and the communication module is connected to the main operation chip and is used for data communication between the main control module and an external device.
In the invention, preferably, an air passage is further formed in the air chamber body, the air passage is sequentially communicated with the sampling cavity, and the air passage is communicated with the gas to be detected.
In the invention, preferably, polytetrafluoroethylene coatings are fixedly arranged on the outer sides of the inner walls of the air passage and the sampling cavity.
Compared with the prior art, the invention has the beneficial effects that:
the device realizes the whole process of the acquisition, signal processing and signal interaction with monitoring equipment of the gas to be detected by combining the control circuit board with the gas chamber body, and can realize the use requirements of various monitoring equipment by arranging different gas sensors; the gas chamber body is internally provided with the acquisition cavity and the gas channel communicated with the acquisition cavity, and the gas channel is along the airflow direction, so that the gas to be detected can be quickly filled in the gas channel and the acquisition cavity, the original air can be smoothly discharged, and the gas sensor can quickly finish acquisition; the temperature control module that sets up simultaneously can control the temperature of air chamber body, makes it keep under invariable temperature for data collection is more accurate.
Drawings
FIG. 1 is a block diagram of a gas chamber for rapid sampling and processing of gas according to the present invention.
FIG. 2 is a circuit diagram of a main control module of a gas rapid sampling processing chamber according to the present invention.
FIG. 3 is a first processing circuit diagram of a gas rapid sampling process chamber according to the present invention.
FIG. 4 is a second processing circuit diagram of a gas rapid sampling process chamber according to the present invention.
FIG. 5 is a third processing circuit diagram of a gas rapid sampling process chamber according to the present invention.
FIG. 6 is a circuit diagram of a communication module of a gas rapid sampling processing chamber according to the present invention.
FIG. 7 is a circuit diagram of a power supply module of a gas rapid sampling process chamber according to the present invention.
FIG. 8 is a circuit diagram of a temperature control module of a gas chamber for rapid gas sampling according to the present invention
FIG. 9 is a schematic diagram of a gas chamber for rapid gas sampling processing according to the present invention.
FIG. 10 is a schematic cross-sectional view of a chamber body of a rapid gas sampling process chamber according to the present invention.
In the drawings: 1-air chamber body, 11-fixed cavity, 12-sampling cavity, 13-air passage, 14-sealing plate, 15-bottom plate, 16-external joint, 17-sealing ring and 2-control circuit board.
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.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 2, a preferred embodiment of the present invention provides a gas rapid sampling processing gas chamber, which is mainly used on an environment monitoring device, is connected with a gas pump, and is used for introducing a gas to be detected into the gas chamber, sampling components in the gas to be detected by a gas sensor, processing a sampling signal, and sending the processed sampling signal to a processing unit of the environment monitoring device, wherein the gas chamber can rapidly complete sampling and signal primary processing of the gas to be detected to be sent to the environment monitoring device connected with the gas chamber, and comprises a gas chamber body 1, a sampling cavity 12 is formed on the gas chamber body 1, a fixed cavity 11 is connected above the sampling cavity 12, a plurality of gas sensors are fixedly arranged in the fixed cavity 11, a control circuit board 2 is fixed on the gas chamber body 1, the control circuit board 2 comprises a signal processing module and a main control module which are connected together, and the gas sensors are electrically connected with, the signal processing module processes and converts analog signals collected by the gas sensor into digital signals, amplifies the digital signals and sends the digital signals to the main control module, and the main control module comprises a main operation chip U3.
It is specific, let in the sampling chamber 12 of air chamber body 1 and wait to detect gaseous, be provided with gas sensor above sampling chamber 12, gas sensor fixes in fixed chamber 11, the circuit board of gas sensor top and 2 electric connection of control circuit board on the air chamber body 1, send the signal processing module on the control circuit board 2 with sampling signal, signal processing module sends for host system after the analog signal processing who gathers gas sensor converts digital signal and enlargies, host system saves and sends for monitoring facilities again after handling, thereby the collection has been accomplished, the overall process of processing to sending, gas sensor wherein can be changed according to the demand, thereby all kinds of environmental monitoring equipment of adaptation, the flexibility ratio is high.
As shown in fig. 8, in the present embodiment, the control circuit board 2 further includes a temperature control module, and the temperature control module is connected to the main control module and is used for controlling the temperature of the gas chamber body 1 to be constant.
Specifically, the temperature control module comprises a heating control circuit and a cooling control circuit, the heating control circuit comprises an operational amplifier U4, a pin 3 of the operational amplifier U4 is connected with a pin 21 of a main operational chip U3 through a resistor R34, the pin 21 and a resistor R34 are grounded through a resistor R36, a pin 2 is connected with a pin 1 through a resistor R32, the pin 1 is output and connected to an interface J1, the interface J1 is connected with a heating assembly, the heating assembly is arranged around the air chamber body 1 in actual use and used for heating, the pin 8 is connected with a 3.3V power supply, a connection point of the 3.3V power supply and the pin 8 is grounded through a capacitor C13, the pin 4 is grounded, the main operational chip U3 outputs a signal to the operational amplifier U4, and the signal is amplified by the operational amplifier U4 and then is output to the heating assembly for heating; the cooling control circuit comprises an operational amplifier U5, a pin No. 3 of the operational amplifier U5 is connected with a pin No. 20 of a main operational chip U3, and is grounded through a capacitor C32, a pin No. 2 of the operational amplifier U5 is grounded through a resistor R40, and is connected with a pin No. 1 through a resistor R38, the pin No. 1 is output and connected with an interface Pump1, a pin No. 8 is connected with a 7.3V power supply, the 7.3V power supply is grounded through a connecting capacitor C15, the interface Pump1 is used for connecting a refrigerating assembly, the refrigerating assembly is arranged around the air chamber body 1 when in use and is used for cooling the air chamber body 1, the heating assembly and the refrigerating assembly adopt the existing products, and therefore the details are omitted.
Referring to fig. 3 to 5, in this embodiment, the signal processing module includes a first processing circuit group, a second processing circuit group and a third processing circuit group, the first processing circuit group is connected to the first gas sensor, the second processing circuit group is connected to the second gas sensor for collecting ammonia and hydrogen sulfide, the third processing circuit group is used to connect the third gas sensor for collecting air quality, the first gas sensor adopts a PID sensor and is mainly used to collect VOC values of the gas to be detected, the second gas sensor adopts a constant point position electrolytic sensor and is used to collect ammonia values, the second gas sensor is used to collect hydrogen sulfide values, the third gas sensor adopts a TGS2602 series sensor and is mainly used to collect gas comprehensive scores, and data of multiple sensors can be synchronously processed and transmitted by each sensor matching with a proper signal processing circuit, the signal transmission efficiency is high.
In this embodiment, the first processing circuit group includes a switch circuit and a signal filter circuit, the switch circuit is connected between the pin 1 of the first gas sensor and the main control module, and the signal filter circuit is connected between the pin 2 of the first gas sensor and the main operation chip U3 of the main control module.
Specifically, the switch circuit includes a switch tube Q2, a gate of the switch tube Q2 is connected to pin 62 of a main operation chip U3 of the main control module, a source is connected to a 5V power supply, a drain is connected to pin 1 of the first gas sensor, the switch circuit is mainly used for controlling the first gas sensor by the main operation chip U3, when the first gas sensor needs to work, pin 62 of the main operation chip U3 outputs a high level signal to the switch tube Q2, so that the switch tube Q2 is turned on, a power port of pin 1 of the first gas sensor is connected to the 5V power supply, the first gas sensor is powered on to start working, a sampling signal is input to pin 23 of the main operation chip U3 through a signal filter circuit by an output end of pin 2 of the sampling signal filter circuit, wherein the signal filter circuit includes a protection resistor R110, the protection resistor R110 is connected between pin 2 of the first gas sensor and pin 23 of the main operation chip U3, the circuit also comprises a resistance-capacitance filter circuit, the resistance-capacitance filter circuit is connected between the No. 23 pin of the main operation chip U3 and the resistor R110, signal filtering is realized mainly through the grounding of a parallel circuit of the capacitor C48 and the resistor R115, and the stability of the input signal to the main operation chip U3 is ensured.
In this embodiment, the second processing circuit group includes a negative feedback circuit and a secondary amplifier circuit (detailed description), a negative feedback circuit is connected between the pin No. 1 and the pin No. 3 of the second gas sensor, and the pin No. 2 is connected to the main operation chip U3 through the secondary amplifier circuit.
Specifically, the second processing circuit group is arranged according to the number of the second gas sensors which are mainly arranged according to the components to be collected, when the values of hydrogen sulfide and ammonia in the gas to be detected need to be collected, two second gas sensors are arranged and are simultaneously connected with two groups of second processing circuit groups, because the constant point electrolysis type sensor is adopted, a negative feedback circuit is connected between the No. 1 pin and the No. 3 pin, the negative feedback circuit comprises an operational amplifier U9A, the No. 2 pin of the operational amplifier U9A is connected with a resistor R65, the other end of the resistor R65 is connected with the No. 1 pin through a capacitor C35, meanwhile, the pin 1 of the second gas sensor is connected through a resistor R64, the pin 3 of the operational amplifier U9A is connected with reference voltage, the pin 1 is connected with the pin 3 of the second gas sensor through a resistor R70, and the output end of the pin 2 of the second gas sensor is connected with the pin 25 of the main operational chip U3 after being connected with the secondary amplification circuit.
Further, the second-stage amplifying circuit comprises an operational amplifier U8A and an operational amplifier U8B, a pin 6 of the operational amplifier U8B is connected with the second gas sensor through a resistor R66, the pin 6 is connected with a pin 7 through a parallel circuit of a resistor R59 and a capacitor C36, the pin 6 is also connected with a reference voltage through a resistor R58, the pin 7 is connected with a pin 3 of the operational amplifier U8A through a resistor R71, a pin 1 output of the operational amplifier U8A is connected with the main operational chip through a resistor R72, a pin 2 is connected with a voltage end through a resistor R78 and a resistor R77, a pin 4 of the operational amplifier U8B and a pin 4 of the operational amplifier U8A are grounded, and a parallel circuit between the resistor R72 and the main operational chip through a resistor R76 and a capacitor C39 is grounded.
In the present embodiment, the third processing circuit group includes an amplifier circuit connected between the pins No. 3 and No. 4 of the third gas sensor and the main arithmetic chip.
Specifically, the third processing circuit group is provided with three groups, which can be connected according to the number of the third gas sensors in practical use, and the extra third processing circuit group is used as a backup circuit group, and the other two groups are connected with the same as the third processing circuit group by using one group of the third processing circuit group, so that details are omitted, wherein the third processing circuit group comprises a socket TGS1, a socket TGS1 is used for connecting each pin of the third gas sensors, an amplifying circuit is used for inputting and inputting the data into a main operational chip U3, the amplifying circuit comprises an operational amplifier U11A and an operational amplifier U11B, a pin 3 of the operational amplifier U11A is a pin 2 of a pin TGS1, a pin 2 of the socket TGS1 is further grounded through a sliding rheostat RV1 and a resistor R73, a pin 8 of the operational amplifier U11A is connected with a 5V power supply, a pin 2 of the operational amplifier U11A is connected with a pin 1 through a resistor R55, and a pin 1 is also connected with a pin 1 of the operational amplifier U11B through a resistor R38, the No. 5 pin of the operational amplifier U11B is connected with a 5V power supply through a resistor R79 and is grounded through a resistor R80, the No. 6 pin is connected with the No. 7 pin through a resistor R56, the output of the No. 7 pin is connected with the No. 16 pin of the main operational chip U3, and the No. 4 pin is grounded.
In this embodiment, the control circuit board 2 further includes a communication module, and the communication module is connected to the main computing chip U3 and is used for data communication between the main control module and the external device.
As shown in fig. 6, specifically, the communication module includes a communication chip U2, the communication chip U2 employs a chip of SP3485EN-L/TR series, pin nos. 1 and 4 of the communication chip are connected with pin nos. 42 and 43 of the main operation chip U3 for data interaction, pin nos. 6 and 7 of the communication chip are connected to an external port through an isolation circuit, the external port is connected to an environment monitoring device through a cable, the isolation circuit includes three double-breakdown diodes D6, D7 and D11, the isolation circuit is used for voltage stabilization to protect the communication chip U2 from breakdown, and the communication module realizes data communication between the main operation chip U3 and the environment monitoring device.
As shown in fig. 7, in this embodiment, the control circuit board 2 further includes a power module, the power module includes a protection circuit, a 12V to 7.3V circuit, a 7.3V to 3.3V circuit, and a 7.3V to 5V circuit, the protection circuit includes a fuse F1 and a diode D1 connected in series between the 12V power supplies, and is used to protect the control circuit board 2 from stable power supply and reverse connection, and the 12V to 7.3V circuit, the 7.3V to 3.3V circuit, and the 7.3V to 5V circuit are used to perform voltage conversion to realize power supply to each module chip.
As shown in fig. 9 and 10, in the present embodiment, an air passage 13 is further formed in the air chamber body 1, the air passage 13 is sequentially communicated with the sampling cavity 12, and the air passage 13 is used for communicating with the gas to be measured.
Specifically, the air chamber body 1 is sequentially provided with a fixed cavity 11, a sampling cavity 12 and an air passage 13 from top to bottom, the fixed cavity 11 and the sampling cavity 12 are cylindrical and coaxially arranged, the inner diameter of the sampling cavity 12 is smaller than that of the fixed cavity 11, a groove is arranged on the outer side of the joint of the fixed cavity 11 and the collecting cavity 12, a sealing ring 17 is arranged in the groove, the air passage 13 sequentially penetrates through all the sampling cavities 12 according to the position of the sampling cavity 12, the end part of the air passage 13 is respectively connected with an outer joint 16, one side of the air chamber body 1, which is provided with the air passage 13, is also connected with a sealing plate 14 and a bottom plate 15, the bottom plate 15 and the sealing plate 14 are fixed on the lower bottom surface of the air chamber body 1 by screws, the sealing plate 14 adopts a fluorine rubber plate for increasing the sealing performance of the air chamber body 1, so as to reduce the contact area with the gas to be detected and prevent the adhesion of the gas to be detected from influencing the sampling result; the gas sensor is respectively embedded into the fixed cavity 11, the detection part of the gas sensor is connected with the sampling cavity 12, the outer ring of the detection part is connected with the sealing ring 17, the sealing ring 17 is made of fluorine rubber, so that the sealing performance of the sampling cavity 12 is ensured, the sealing ring 17 is placed in the groove and is less in contact with gas to be detected, the influence of gas adsorption on a sampling result is avoided, meanwhile, the gas sensor is fixed through a screw, the model of the gas sensor can be selected according to actual requirements for installation, the gas sensor can be replaced according to different scenes, the flexibility is high, the practicability is high, and the gas sensor and the sampling cavity are connected; when using, one of them external joint 16 connects the air pump, another is for waiting to detect gaseous air inlet, the gas that awaits measuring gets into air flue 13 from the air inlet through the effect of air pump, and be full of each sampling chamber 12 in proper order, thereby gas sensor gathers the composition content of each difference in the gas that awaits measuring, air flue 13 and sampling chamber 12 set up and can make the gas that awaits measuring be full of rapidly and carry out abundant contact with gas sensor, be favorable to gas sensor's collection, and air flue 13's setting can be changed the gas in gas flue 13 and the sampling chamber 12 when detecting the beginning, it waits to detect gas to change into, be favorable to the accuracy of gas sensor data collection.
In this embodiment, air flue 13, sampling chamber 12 inner wall and fixed chamber 11 outside are equipped with the polytetrafluoroethylene coating, and the polytetrafluoroethylene coating is used for reducing the adsorptivity of air chamber body to the gas that awaits measuring, and data are more accurate when measuring low concentration gas.
The working principle is as follows:
the air chamber body is arranged on an environment monitoring device, a required gas sensor is arranged in a fixed cavity 11, a control circuit board 2 is electrically connected with the gas sensor, the control circuit board 2 is in communication connection with the environment monitoring device, an external joint 16 is connected with an air pump, when the air pump works, gas to be detected is pumped into an air passage 13 and then is filled in a whole sampling cavity 12, the gas sensor collects gas components to be detected and sends collected signals to the control circuit board 2, firstly, analog signals are processed and converted into digital signals through a signal processing module respectively and then are amplified and sent to a main control module, a main operation chip U3 of the main control module stores and processes the signals and then sends the signals to the monitoring device through the communication module, so that the whole process from collection and processing to sending is completed, the gas sensor can be replaced according to requirements, and is adapted to various environment monitoring devices, the flexibility is high, and the whole process from gas collection to subsequent processing and sending can be rapidly completed.
The above description is intended to describe in detail the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the claims of the present invention, and all equivalent changes and modifications made within the technical spirit of the present invention should fall within the scope of the claims of the present invention.
Claims (10)
1. The utility model provides a gaseous quick sampling processing air chamber, its characterized in that, includes the air chamber body, the sampling chamber has been seted up on the air chamber body, the sampling chamber is connected with fixed chamber, fixed intracavity is fixed and is provided with a plurality of gas sensor, be fixed with control circuit board on the air chamber body, last signal processing module and the host system including linking together of control circuit board, gas sensor with the signal processing module electricity is connected, signal processing module will analog signal processing who gas sensor gathered is sent for after the digital signal is enlargied main control module, main control module includes main operation chip.
2. The gas chamber of claim 1, wherein the control circuit board further comprises a temperature control module, and the temperature control module is connected to the main control module and used for controlling the temperature of the gas chamber body to be constant.
3. The gas rapid sampling processing gas chamber of claim 1, wherein the signal processing module comprises a first processing circuit group, a second processing circuit group and a third processing circuit group, the first processing circuit group is connected with the first gas sensor, the second processing circuit group is connected with the second gas sensor, and the third processing circuit group is used for connecting with the third gas sensor.
4. The gas rapid sampling processing chamber according to claim 3, wherein the first processing circuit group comprises a switch circuit and a signal filter circuit, the switch circuit is connected between the pin 1 of the first gas sensor and the main control module, and the signal filter circuit is connected between the pin 2 of the first gas sensor and the main control module.
5. The gas chamber of claim 4, wherein the switching circuit comprises a switching tube, a gate of the switching tube is connected to pin 62 of the main computing chip of the main control module, a source of the switching tube is connected to a voltage, and a drain of the switching tube is connected to pin 1 of the first gas sensor.
6. The gas chamber of claim 5, wherein the second processing circuit group comprises a negative feedback circuit and a second-stage amplification circuit, the negative feedback circuit is connected between the pin 1 and the pin 3 of the second gas sensor, and the pin 2 is connected with the main operation chip through the second-stage amplification circuit.
7. The gas rapid sampling processing gas chamber of claim 3, wherein the third processing circuit group comprises an amplifying circuit, and the amplifying circuit is connected between the pins 3 and 4 of the third gas sensor and the main operation chip.
8. The gas chamber of claim 5, wherein the control circuit board further comprises a communication module, and the communication module is connected to the main computing chip and is used for data communication between the main control module and an external device.
9. The gas chamber for rapidly sampling and processing gas as claimed in claim 1, wherein a gas passage is further formed in the gas chamber body, the gas passage is sequentially communicated with the sampling cavity, and the gas passage is used for communicating with gas to be detected.
10. The gas chamber of claim 9, wherein the inner wall of the gas passage and the sampling cavity is coated with teflon.
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Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223783A (en) * | 1992-05-01 | 1993-06-29 | Willis Technologies International, Inc. | Method and device for detecting reducing gas using semiconductor gas sensor |
| JP2007047104A (en) * | 2005-08-12 | 2007-02-22 | Japan Atomic Energy Agency | Method and apparatus for measuring 14co2 flux by using flowing-gas technique |
| US20100206042A1 (en) * | 2009-02-18 | 2010-08-19 | W R Systems, Ltd. | Emissions Monitoring Apparatus, System, and Method |
| US20100313963A1 (en) * | 2007-11-13 | 2010-12-16 | Ruskinn Life Sciences Limited | Gas mixer and sampler system for a controlled atmosphere laboratory chamber |
| US20120247182A1 (en) * | 2011-03-29 | 2012-10-04 | Patti Lynn Nelson | Mobile scent tester |
| CN103487403A (en) * | 2013-10-14 | 2014-01-01 | 北京信息科技大学 | Fiber bragg grating combined optical fiber laser gas detection system with reference cavity compensation |
| CN203745367U (en) * | 2013-12-10 | 2014-07-30 | 六安职业技术学院 | Intelligent pork freshness detector |
| CN104535531A (en) * | 2014-12-15 | 2015-04-22 | 北京航天易联科技发展有限公司 | Handheld laser gas concentration monitor and control method thereof |
| CN104568829A (en) * | 2013-10-14 | 2015-04-29 | 北京信息科技大学 | Gas detection system using fiber laser with function of active feedback compensation of reference cavity |
| CN105784433A (en) * | 2016-03-08 | 2016-07-20 | 浙江大学 | Parallel collection device for VOCs and EBCs in exhaled air from human body |
| CN106289887A (en) * | 2016-08-10 | 2017-01-04 | 天津大学 | A kind of bionical method of sampling respiration of Electronic Nose |
| CN207636554U (en) * | 2017-09-13 | 2018-07-20 | 中国科学院地理科学与资源研究所 | Sensor-based debirs treatment facility stench monitors system |
| CN209027988U (en) * | 2018-10-25 | 2019-06-25 | 南京信息工程大学 | A kind of infrared gas sensor with temperature control system |
| CN110967286A (en) * | 2019-12-30 | 2020-04-07 | 天津智易时代科技发展有限公司 | Oil smoke probe |
| CN110987541A (en) * | 2019-11-29 | 2020-04-10 | 天津智易时代科技发展有限公司 | Gas sampling device and method |
| CN211402291U (en) * | 2019-09-26 | 2020-09-01 | 河北华清环境科技集团股份有限公司 | Foul gas on-line monitoring appearance |
-
2020
- 2020-12-30 CN CN202011605402.6A patent/CN112816273B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5223783A (en) * | 1992-05-01 | 1993-06-29 | Willis Technologies International, Inc. | Method and device for detecting reducing gas using semiconductor gas sensor |
| JP2007047104A (en) * | 2005-08-12 | 2007-02-22 | Japan Atomic Energy Agency | Method and apparatus for measuring 14co2 flux by using flowing-gas technique |
| US20100313963A1 (en) * | 2007-11-13 | 2010-12-16 | Ruskinn Life Sciences Limited | Gas mixer and sampler system for a controlled atmosphere laboratory chamber |
| US20100206042A1 (en) * | 2009-02-18 | 2010-08-19 | W R Systems, Ltd. | Emissions Monitoring Apparatus, System, and Method |
| US20120247182A1 (en) * | 2011-03-29 | 2012-10-04 | Patti Lynn Nelson | Mobile scent tester |
| CN104568829A (en) * | 2013-10-14 | 2015-04-29 | 北京信息科技大学 | Gas detection system using fiber laser with function of active feedback compensation of reference cavity |
| CN103487403A (en) * | 2013-10-14 | 2014-01-01 | 北京信息科技大学 | Fiber bragg grating combined optical fiber laser gas detection system with reference cavity compensation |
| CN203745367U (en) * | 2013-12-10 | 2014-07-30 | 六安职业技术学院 | Intelligent pork freshness detector |
| CN104535531A (en) * | 2014-12-15 | 2015-04-22 | 北京航天易联科技发展有限公司 | Handheld laser gas concentration monitor and control method thereof |
| CN105784433A (en) * | 2016-03-08 | 2016-07-20 | 浙江大学 | Parallel collection device for VOCs and EBCs in exhaled air from human body |
| CN106289887A (en) * | 2016-08-10 | 2017-01-04 | 天津大学 | A kind of bionical method of sampling respiration of Electronic Nose |
| CN207636554U (en) * | 2017-09-13 | 2018-07-20 | 中国科学院地理科学与资源研究所 | Sensor-based debirs treatment facility stench monitors system |
| CN209027988U (en) * | 2018-10-25 | 2019-06-25 | 南京信息工程大学 | A kind of infrared gas sensor with temperature control system |
| CN211402291U (en) * | 2019-09-26 | 2020-09-01 | 河北华清环境科技集团股份有限公司 | Foul gas on-line monitoring appearance |
| CN110987541A (en) * | 2019-11-29 | 2020-04-10 | 天津智易时代科技发展有限公司 | Gas sampling device and method |
| CN110967286A (en) * | 2019-12-30 | 2020-04-07 | 天津智易时代科技发展有限公司 | Oil smoke probe |
Non-Patent Citations (2)
| Title |
|---|
| 张学典: "基于ＳＴＭ３２的CO2 浓度探测系统研究", 《软件导刊》 * |
| 李晶,刘洪波,梁元凤,陈涛: "应用分子扩散法测定沈阳市环境空气中的二氧化氮 ———监测结果分析评价", 《辽宁城乡环境科技》 * |
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