CN210128963U - Self calibration volatile organic compound's measuring equipment - Google Patents
Self calibration volatile organic compound's measuring equipment Download PDFInfo
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- CN210128963U CN210128963U CN201920905942.2U CN201920905942U CN210128963U CN 210128963 U CN210128963 U CN 210128963U CN 201920905942 U CN201920905942 U CN 201920905942U CN 210128963 U CN210128963 U CN 210128963U
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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
Abstract
The utility model relates to a self calibration volatile organic compounds's measuring equipment. The TVOC sensor comprises an air inlet, a TVOC sensor, a filtering device and a main control module; set up first gas circuit and second gas circuit between air inlet and the TVOC sensor, filter equipment sets up on the second gas circuit, and the air inlet directly links to each other with the TVOC sensor through first gas circuit, and the air inlet links to each other with the TVOC sensor again after passing through filter equipment through the second gas circuit, and host system is used for controlling and switches between first gas circuit and the second gas circuit. The utility model realizes the measurement of volatile organic compounds by arranging two gas paths, and the outside air directly passes through the TVOC sensor through the first gas path; utilize host system to switch the gas circuit, the outside air passes through the second gas circuit, passes through filter equipment earlier, passes through the TVOC sensor again, and filter equipment's purpose filters TVOC and other pollutant, provides the pure air and calibrates for the TVOC sensor, realizes the self calibration of sensor.
Description
Technical Field
The utility model belongs to the technical field of the ambient air detects technique and specifically relates to a measuring equipment of self calibration volatile organic compound.
Background
As is known, volatile organic compounds (TVOC) are volatile organic compounds that are harmful to human bodies, and as socioeconomic rapid development progresses, the problem of organic pollution in ambient air is becoming more serious, and therefore, the TVOC content in air needs to be detected.
At present, the measurement of volatile organic compounds mostly adopts an electronic gas sensor, the gas sensor has the advantages of simple structure, low price and small volume, and is convenient to be made into small-sized portable equipment, but the gas sensor needs to be periodically calibrated at zero point (the sensor is put into pure air or nitrogen for a period of time), and the measurement accuracy is ensured. However, the existing measuring devices mostly use sealed pure air or nitrogen gas pipes to complete the calibration task, and this method is cumbersome to operate, requires manual intervention, and separately purchases pure air or nitrogen calibration pipes.
Therefore, it is necessary to provide a self-calibrated voc measuring device, which can realize the measurement of the voc and periodic self-calibration.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to provide a self-calibrating volatile organic compound measuring device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a measuring device for self calibration of volatile organic compounds comprises an air inlet, a TVOC sensor, a filtering device and a main control module; the air inlet is used for being communicated with external air; set up first gas circuit and second gas circuit between air inlet and the TVOC sensor, filter equipment sets up on the second gas circuit, the air inlet is directly linked together with the TVOC sensor through first gas circuit, the air inlet is linked together with the TVOC sensor again after passing through filter equipment through the second gas circuit, filter equipment is arranged in filtering the volatile organic compound in the air, host system is arranged in controlling and switches between first gas circuit and the second gas circuit, the TVOC sensor is connected with the host system electricity.
Preferably, the air path switching device is further provided with an air inlet port and two air outlet ports; the air inlet port of the air path switching device is communicated with the air inlet; one of them gas outlet port of gas circuit auto-change over device meets and is linked together through first gas circuit directly with the TVOC sensor, another gas outlet port of gas circuit auto-change over device meets and is linked together through second gas circuit and filter equipment and TVOC sensor with the second gas circuit, gas circuit auto-change over device is controlled by host system, host system controls the switching between first gas circuit and the second gas circuit through switching two gas outlet ports.
Preferably, the TVOC sensor further comprises a display module, the display module is electrically connected with the main control module, and the display module is used for displaying the detection result of the TVOC sensor.
Preferably, the display module is a touch screen, and the touch screen is used for realizing human-computer interaction operation of a user.
Preferably, the filter device comprises a filter apparatus removably disposed within the filter device.
Preferably, a clock module is integrated on the main control module, and the main control module periodically switches the first air path and the second air path through the clock module.
Preferably, the system also comprises a wireless communication module, wherein the wireless communication module is electrically connected with the main control module and is used for communicating with a remote terminal.
Preferably, the TVOC sensor employs a metal oxide sensor.
Preferably, the power supply management module is electrically connected with the main control module and the energy storage battery, and is used for converting the input voltage of an external power supply or the energy storage battery into the voltage required by each module and supplying power to each module through the main control module; and meanwhile, the power supply management module is used for charging the energy storage battery.
Preferably, an air exhaust fan is arranged at the air inlet, and the air exhaust fan is controlled by the main control module.
Due to the adoption of the scheme, the utility model realizes the measurement of the volatile organic compounds by arranging the two gas paths, and under the normal use state, the outside air can directly pass through the TVOC sensor through the air inlet and the first gas path; when needing to carry out the calibration, usable host system switches the gas circuit, and the outside air gets into and passes through the second gas circuit behind the air inlet, passes through filter equipment earlier, passes through the TVOC sensor again, and filter equipment's purpose filters TVOC and other pollutant composition in the air, provides pure air and calibrates for the TVOC sensor, consequently, through the periodic switch to first gas circuit and second gas circuit, can realize the self calibration of sensor.
Based on this, its compact structure is reasonable, switches between first gas circuit and the second gas circuit through host system to and filter equipment's cooperation, realizes volatile organic compound's measurement and regular self calibration, need not manual operation, and easy operation is convenient, has very strong practical value and market spreading value.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
As shown in fig. 1, the embodiment of the present invention provides a measuring apparatus for self-calibrating volatile organic compounds, which includes an air inlet 1, a TVOC sensor 2, a filtering device 3 and a main control module 4; the air inlet 1 is used for being communicated with external air; set up first gas circuit 5 and second gas circuit 6 between air inlet 1 and the TVOC sensor 2, filter equipment 3 sets up on second gas circuit 6, air inlet 1 is directly linked together with TVOC sensor 2 through first gas circuit 5, air inlet 1 is linked together with TVOC sensor 2 again after filter equipment 3 through second gas circuit 6, filter equipment 3 is arranged in filtering the volatile organic compound in the air, host system 4 is used for controlling and switches between first gas circuit 5 and the second gas circuit 6, TVOC sensor 2 is connected with host system 4 electricity.
Therefore, through the arrangement of the two gas paths, under a normal use state, outside air can directly pass through the TVOC sensor 2 through the air inlet 1 and the first gas path 5, so that the measurement of the volatile organic compounds is realized; when needing to carry out the calibration, usable host system 4 switches the gas circuit, and outside air gets into and passes through second gas circuit 6 behind the air inlet 1, passes through filter equipment 3 earlier, passes through TVOC sensor 2 again, and filter equipment 3's purpose filters TVOC and other pollutant composition in the air, provides pure air and calibrates for TVOC sensor 2, consequently, through the periodic switching to first gas circuit 5 and second gas circuit 6, can realize the self calibration of sensor. Based on this, its compact structure is reasonable, switches between first gas circuit 5 and the second gas circuit 6 through host system 4 to and filter equipment 3's cooperation, realize volatile organic compound's measurement and regular self calibration, need not manual operation, and easy operation is convenient, has very strong practical value and market spreading value.
In order to facilitate the main control module 4 to switch between the first air path 5 and the second air path 6, as a preferred scheme, the measurement apparatus of this embodiment further includes an air path switching device 7, where the air path switching device 7 has an air inlet port 71 and two air outlet ports 72; the air inlet port 71 of the air path switching device 7 is communicated with the air inlet 1; one of the air outlet ports 72 of the air channel switching device 7 is connected with the first air channel 5 and directly communicated with the TVOC sensor 2 through the first air channel 5, the other air outlet port 72 of the air channel switching device 7 is connected with the second air channel 6 and communicated with the TVOC sensor 2 through the second air channel 6 and the filtering device 3, the air channel switching device 7 is controlled by the main control module 4, and the main control module 4 controls the switching between the first air channel 5 and the second air channel 6 by switching the two air outlet ports 72. Therefore, the air path switching device 7 is arranged to facilitate the connection between the air inlet 1 and the first air path 5 and the second air path 6; meanwhile, the main control module 4 can control the first gas circuit 5 and the second gas circuit 6 to be switched by only periodically controlling the opening and closing of the two gas outlet ports 72 of the gas circuit switching device 7, and the operation is simple and convenient.
Further, the measuring device in this embodiment further includes a display module 8, the display module 8 is electrically connected to the main control module 4, and the display module 8 is configured to display a detection result of the TVOC sensor 2. Therefore, the TVOC sensor 2 can be used for detecting TVOC data in the environment in real time, and the measurement result of the TVOC is displayed in real time through the display module 8.
Further, the display module 8 in this embodiment is a touch screen, and the touch screen is used to implement human-computer interaction operation of a user, where the human-computer interaction operation includes user instruction input, operation interface display, and a measurement result. Therefore, human-computer interaction can be realized by using the touch screen during working, for example, the first air path 5 and the second air path 6 can be manually switched by inputting instructions or displaying an operation interface through a user, so that manual real-time calibration can be carried out. Meanwhile, the touch screen can display the measurement result.
Further, the filter device 3 in the present embodiment includes a filter material detachably provided in the filter device 3. Utilize the dismantled setting of filter equipment for through the system timing settlement, change with the suggestion user, guarantee effectively and keep the effect of filter equipment 3 filtered air.
Further, a clock module is integrated on the main control module 4 in this embodiment, and the main control module 4 periodically switches the first air path 5 and the second air path 6 through the clock module. By means of the arrangement of the clock module, the air passages can be switched at regular time conveniently through corresponding programs, and the filtering device 3 can be replaced at regular time conveniently.
Preferably, the measuring device in this embodiment further includes a wireless communication module 9, the wireless communication module 9 is electrically connected to the main control module 4, the wireless communication module 9 is used for communicating with a remote terminal, and the remote terminal includes a mobile phone, a tablet APP or a computer. And a wireless communication module 9 (such as a wifi or Bluetooth module) is added to communicate with a mobile phone, a tablet or a computer, and the operation and display are carried out through software in the mobile phone, the tablet or the computer so as to carry out remote control on the measuring equipment.
Further, the TVOC sensor 2 in the present embodiment employs a metal oxide sensor, which is a preferred embodiment, but not limited to the metal oxide sensor.
Further, the measurement device in this embodiment further includes a power management module 10 and an energy storage battery 11 (such as a lithium battery), where the power management module 10 is electrically connected to the main control module 4 and the energy storage battery 11, and the power management module 10 is configured to convert an input voltage of an external power supply or the energy storage battery 11 into a voltage required by each module, and supply power to each module through the main control module 4; and the power management module 10 is used for charging the energy storage battery 11. When an external power supply is plugged in, the power management module 10 converts the input voltage of the external power supply into the voltage required by each module, supplies power to each module through the main control module 4, and charges the energy storage battery 11; when the external power supply is not plugged, the power management module 10 converts the input voltage of the energy storage battery 11 into the voltage required by each module, and supplies power to each module through the main control module 4.
Further, an air exhaust fan is disposed at the air inlet 1 in the present embodiment, and the air exhaust fan is controlled by the main control module 4. The work of the air extracting fan is controlled to control whether the outside air enters the measuring equipment or not and the flow rate of the air.
The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent flow changes made by the contents of the specification and the drawings, or directly or indirectly applied to other related technical fields, are included in the same way in the protection scope of the present invention.
Claims (10)
1. A self-calibrating volatile organic compound measuring device, characterized by: the TVOC sensor comprises an air inlet, a TVOC sensor, a filtering device and a main control module; the air inlet is used for being communicated with external air; set up first gas circuit and second gas circuit between air inlet and the TVOC sensor, filter equipment sets up on the second gas circuit, the air inlet is directly linked together with the TVOC sensor through first gas circuit, the air inlet is linked together with the TVOC sensor again after passing through filter equipment through the second gas circuit, filter equipment is arranged in filtering the volatile organic compound in the air, host system is arranged in controlling and switches between first gas circuit and the second gas circuit, the TVOC sensor is connected with the host system electricity.
2. A self-calibrating voc measurement device according to claim 1, wherein: the gas circuit switching device is provided with an air inlet port and two air outlet ports; the air inlet port of the air path switching device is communicated with the air inlet; one of them gas outlet port of gas circuit auto-change over device meets and is linked together through first gas circuit directly with the TVOC sensor, another gas outlet port of gas circuit auto-change over device meets and is linked together through second gas circuit and filter equipment and TVOC sensor with the second gas circuit, gas circuit auto-change over device is controlled by host system, host system controls the switching between first gas circuit and the second gas circuit through switching two gas outlet ports.
3. A self-calibrating voc measurement device according to claim 1, wherein: the TVOC sensor comprises a TVOC sensor body and is characterized by further comprising a display module, wherein the display module is electrically connected with the main control module and used for displaying the detection result of the TVOC sensor.
4. A self-calibrating voc measurement device according to claim 3, wherein: the display module is a touch screen, and the touch screen is used for realizing human-computer interaction operation of a user.
5. A self-calibrating voc measurement device according to claim 1, wherein: the filter device comprises a filter material which is detachably arranged in the filter device.
6. A self-calibrating voc measurement device according to claim 1, wherein: the main control module is integrated with a clock module, and the main control module periodically switches the first air path and the second air path through the clock module.
7. A self-calibrating voc measurement device according to claim 1, wherein: the wireless communication module is electrically connected with the main control module and is used for communicating with a remote terminal.
8. A self-calibrating voc measurement device according to claim 1, wherein: the TVOC sensor adopts a metal oxide sensor.
9. A self-calibrating voc measurement device according to claim 1, wherein: the power management module is respectively electrically connected with the main control module and the energy storage battery, and is used for converting the input voltage of an external power supply or the energy storage battery into the voltage required by each module and supplying power to each module through the main control module; and meanwhile, the power supply management module is used for charging the energy storage battery.
10. A self-calibrating voc measurement device according to claim 1, wherein: an air exhaust fan is arranged at the air inlet and is controlled by the main control module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920905942.2U CN210128963U (en) | 2019-06-14 | 2019-06-14 | Self calibration volatile organic compound's measuring equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920905942.2U CN210128963U (en) | 2019-06-14 | 2019-06-14 | Self calibration volatile organic compound's measuring equipment |
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| CN210128963U true CN210128963U (en) | 2020-03-06 |
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| CN201920905942.2U Active CN210128963U (en) | 2019-06-14 | 2019-06-14 | Self calibration volatile organic compound's measuring equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773832A (en) * | 2020-07-14 | 2020-10-16 | 中煤科工集团重庆研究院有限公司 | Gas pretreatment system with anti-turbulence and calibration functions |
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2019
- 2019-06-14 CN CN201920905942.2U patent/CN210128963U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111773832A (en) * | 2020-07-14 | 2020-10-16 | 中煤科工集团重庆研究院有限公司 | Gas pretreatment system with anti-turbulence and calibration functions |
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