CN210923461U - Ozone concentration monitoring device - Google Patents
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- CN210923461U CN210923461U CN201921319839.6U CN201921319839U CN210923461U CN 210923461 U CN210923461 U CN 210923461U CN 201921319839 U CN201921319839 U CN 201921319839U CN 210923461 U CN210923461 U CN 210923461U
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Abstract
The utility model provides a monitoring devices of ozone concentration. The ozone concentration detection device comprises: a pipeline; the electromagnetic valve is connected with the pipeline and used for controlling the flow of the gas to be detected so as to set a first period and a second period; the ozone washing unit is connected with the pipeline and the electromagnetic valve, and is used for washing the ozone in the gas to be detected in the first period to obtain the gas to be detected after the ozone is washed; the sensing unit is connected with the pipeline, senses the gas to be detected after the ozone removal in the first period to obtain a first sensing value, and senses the gas to be detected in the second period to obtain a second sensing value; and the data processing unit is connected with the sensing unit and calculates the concentration of the ozone in the gas to be detected according to the first sensing value, the second sensing value and a preset ratio relation. According to the utility model provides a monitoring devices of ozone concentration, simple structure, easy and simple to handle, with low costs, precision height, stability height, good reliability.
Description
Technical Field
The utility model belongs to the technical field of atmospheric particulates monitoring, a ozone concentration monitoring is related to, especially relate to the monitoring devices of ozone concentration.
Background
Ozone has strong disinfecting, bleaching and deodorizing properties and is widely used in daily life, but ozone is also a substance polluting the environment, and therefore, it is necessary to monitor the concentration of ozone, for example, the concentration of ozone in the atmosphere. Most of the existing ozone concentration monitoring devices mainly measure through an ultraviolet absorption method, however, the monitoring devices are easily affected by ultraviolet light in the outdoor environment, so that the monitoring devices are often used indoors, in addition, the ozone concentration is monitored through an ultraviolet absorption principle, gas data information after gas and ozone are washed away is generally collected through two sensing units, and the ozone concentration in the gas is calculated through a ratio value. Therefore, it is very important to provide an ozone concentration monitoring device with simple operation, low cost, high precision, high stability and strong reliability.
SUMMERY OF THE UTILITY MODEL
In view of the above shortcomings of the prior art, an object of the present invention is to provide a monitoring device for ozone concentration, which is used to solve the problems of large error, inaccuracy and low stability of ozone concentration detection in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a monitoring device for ozone concentration, the monitoring device comprising: the pipeline contains a gas to be measured; the electromagnetic valve is connected with the pipeline and used for controlling the flow of the gas to be detected so as to set a first period and a second period; the ozone washing unit is connected with the pipeline and the electromagnetic valve, and is used for washing the ozone in the gas to be detected in the first period to obtain the gas to be detected after the ozone is washed; the sensing unit is connected with the pipeline, senses the gas to be detected after the ozone removal in the first period to obtain a first sensing value, and senses the gas to be detected in the second period to obtain a second sensing value; and the data processing unit is connected with the sensing unit and calculates the concentration of the ozone in the gas to be detected according to the first sensing value, the second sensing value and a preset ratio relation.
In an embodiment of the present disclosure, the sensing unit includes: a sensing chamber connected to the conduit;
the ultraviolet light source is positioned at one end of the sensing chamber and irradiates the gas to be detected;
the first photoelectric sensing unit is positioned at the other end of the sensing chamber, receives the gas to be detected and the ultraviolet light signal of the gas to be detected after the ozone is removed and outputs the ultraviolet light signal as an electric signal;
and the first photoelectric sensing unit is connected with the data processing unit through the circuit sensing unit and used for calculating the concentration of ozone in the gas to be detected.
The utility model discloses an in the embodiment, monitoring devices still includes: a light focusing device positioned between the ultraviolet light source and the sensing chamber.
In an embodiment of the present disclosure, the sensing unit further includes: the light splitting device is positioned between the light condensing device and the sensing chamber and forms a plurality of ultraviolet light paths; and the second photoelectric sensing unit is connected with the circuit sensing unit and the light splitting device.
In an embodiment of the present disclosure, the first photo-sensing unit and the second photo-sensing unit are the same or different silicon photodiodes.
In one embodiment of the present disclosure, the light sensing area of the silicon photodiode is 6-13 mm.
In one embodiment of the present disclosure, the sensing chamber inner wall has a reflective film.
In one embodiment of the present disclosure, the reflective film is a single-layer or multi-layer composite resin polymer.
In an embodiment of the present disclosure, the solenoid valve is a 3-way solenoid valve.
To sum up, the utility model provides a monitoring device of ozone concentration. According to the utility model provides a monitoring devices of ozone concentration utilizes the monitoring method that the difference calculated, in the cycle of difference, will await measuring gas and ozone wash the gas that awaits measuring after removing and send to same sensing unit to eliminate the error that exists such as sensing unit, machine and surrounding environment, especially under the unstable condition of external environment, can obtain accurate, stable ozone concentration measurement data. Furthermore, this the utility model discloses a monitoring method is simple, convenient operation. Other features, benefits and advantages will be apparent from the disclosure including the description and claims detailed herein.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the device for monitoring ozone concentration according to the present invention.
FIG. 2 is a schematic structural diagram of an embodiment of an ozone scrubbing unit in an ozone concentration monitoring device according to the present invention.
FIG. 3 is a cross-sectional view of the A-A side of the ozone scrubbing unit of FIG. 2.
Fig. 4 is a schematic structural diagram of a sensing chamber in the ozone concentration monitoring device according to the present invention.
FIG. 5 is a schematic cross-sectional view of the sensing chamber according to FIG. 4.
Fig. 6 is a schematic structural view of still another embodiment of the device for monitoring ozone concentration according to the present invention.
Figure 7 is a schematic flow diagram of a method for monitoring ozone concentration according to the present invention.
Detailed Description
The following description is provided for illustrative purposes, and other advantages and features of the present invention will become apparent to those skilled in the art from the following detailed description.
It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limit conditions that the present invention can be implemented, so that the present invention has no technical essential meaning, and any structure modification, ratio relationship change or size adjustment should still fall within the scope that the technical content disclosed in the present invention can cover without affecting the function that the present invention can produce and the purpose that the present invention can achieve. Meanwhile, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description, and are not intended to limit the scope of the present invention, and changes or adjustments of the relative relationship thereof may be made without substantial technical changes, and the present invention is also regarded as the scope of the present invention.
Referring to fig. 1 to 7, the present invention provides an ozone concentration monitoring device 100. Pollutants such as NOx or hydrocarbons discharged from factories, offices and automobiles generate photochemical oxidants mainly containing strong oxide substances such as ozone when irradiated with solar light, and cause pollution when discharged into the air, causing environmental impact. Therefore, the measuring bureaus in various regions set observation points in a plurality of regional ranges so as to accurately research the gas concentration in the environment. The utility model provides an ozone concentration monitoring devices 100 can be used for indoor air quality to detect, can also be used to experiment industrial park, the ozone detection in the open-air atmosphere, in addition, ozone concentration monitoring devices 100 can also be used to the ozone research, for example the disinfection of hand-held device, medical accessory, hospital's waste water is handled, and landscape water, lake water remove algae, decoloration are handled, detect and judge effective input volume etc. that have the ozone of strong oxidizing property.
Referring to fig. 1, the present invention provides a monitoring device 100 for ozone concentration, which comprises a box 1, an air inlet unit 2, an exhaust unit 3, a pipeline 4, a solenoid valve 5, an ozone washing unit 6, a sensing unit 7, and a data processing unit 8.
Referring to fig. 1, the box 1 is a housing with sufficient strength and rigidity and has a receiving space, the box 1 may be, for example, a cast steel box or a steel plate welded box, but not limited thereto, and the box 1 may also be made of other materials, such as a plastic box. In order to facilitate the installation and the disassembly of devices, the box body 1 can be formed by detachable plates, and the plates are spliced by bolts, clamping pieces and the like.
Referring to fig. 1, the gas inlet unit 2 is located on a surface of the box 1, the gas inlet unit 2 is used for introducing the gas to be measured into a sensing component in the box 1 for measurement, and the gas inlet unit 2 includes a gas inlet 21, such as a rubber tube.
Referring to fig. 1, the exhaust unit 3 is located on the surface of the box 1, and the exhaust unit 3 is used for exhausting the tested gas. In a specific embodiment of the present disclosure, the exhaust unit 3 includes a pump 31 and an exhaust port 32, the pump 31 is located between the surface of the box 1 and the exhaust port 32, further, the exhaust unit 3 further includes a flow meter (not shown in the figure) for displaying the flow rate, the ozone concentration monitoring device 100 pumps the whole system through the pump 31, so that the gas to be tested flows and is discharged outside the box 1 according to the preset direction and the constant flow rate, for example, 2-6L/min, for example, 2L/min, thereby completing the test operation.
Referring to fig. 1, the pipe 4 is located inside the box 1, the gas inlet unit 2 and the gas outlet unit 3 respectively penetrate through the box 1 and are connected to two ends of the pipe 4, so that the pipe 4 has the gas to be measured flowing therein, and the pipe 4 is connected to the sensing unit 7 as described above in detail below.
Referring to fig. 1, the solenoid valve 5 is connected to the pipe 4 and electrically connected to the power source. Specifically, the valve pipe of the electromagnetic valve 5 is connected with the pipeline 4, and the flow rate of the gas to be detected flowing in the pipeline 4 can be controlled to set a first period and a second period, so that the strength of the gas to be detected is sensed to be different in different periods, and the gas to be detected is based on Lambert-Beer lawCalculating the ozone concentration in the gas. Specifically, when an ultraviolet beam with a certain intensity and a central wavelength of 240-260nm passes through the mixed gas containing ozone, the incident light intensity I0The relationship between the intensity of emergent light I and the intensity of emergent light I conforms to the following formula:
I＝I0 (-kcl)(1)
wherein k is the absorption coefficient of ozone gas; c is the ozone concentration; l is the length of the sensing chamber. According to the obtained incident light intensity I0And calculating the concentration c of the ozone according to the emergent light intensity I of the ultraviolet light source after penetrating through the ozone.
Referring to fig. 1, the solenoid valve 5 may be, for example, a two-way solenoid valve, a three-way solenoid valve, or a four-way solenoid valve. The utility model discloses a concrete implementation mode, solenoid valve 5 is three way solenoid valve, solenoid valve 5 is including first route 51, second route 52, third route 53, and solenoid valve 5 first route 51 of switching and second route 52 in turn to and the state of opening between first route 51 and third route 53, and solenoid valve 5 carries out the cycle switch through controlling the switching of its coil break-make electric control gas between two routes.
Referring to fig. 1, during the measurement operation, when the power is turned on, the valve is opened, the first passage 51 and the second passage 52 are kept open, the first passage 51 and the third passage 53 are kept closed, the gas to be measured in the pipeline 4 is subjected to ozone cleaning by the ozone cleaning unit 6 as described in detail below, when the electromagnetic valve 5 is turned off, the first passage 51 and the second passage 52 are kept closed, the first passage 51 and the third passage 53 are kept open, a first period is formed, the gas to be measured after ozone cleaning is sent to the sensing unit 7 for sensing, and a first sensing value, namely, the incident light intensity I is obtained0. When the electromagnetic valve 5 is powered off, the firstThe first passage 51 and the second passage 52 are kept in a closed state, the first passage 51 and the third passage 53 are kept in an open state, a second period is formed at the moment, the gas to be detected in the pipeline 4 directly enters the sensing unit 7 for sensing, a second sensing value, namely the emergent light intensity I is obtained, and the ozone concentration in the gas is calculated. The three-way electromagnetic valve 5 makes the utility model have 1.5 times of one period as the other period, and the ozone can be fully removed in the period.
Referring to fig. 1, the ozone scrubbing unit 6 is disposed in the housing 1, and is connected to the pipe 4 and the solenoid valve 5. Specifically, one end of the ozone washing unit 6 is connected to the air inlet unit 2 through a pipe 4, and the other end is connected to a valve pipe of the electromagnetic valve 5 through a pipe 4. In a period formed by the control of the electromagnetic valve 5, the gas to be measured passes through the ozone washing unit 6.
Referring to fig. 2 to 3, the ozone removing unit 6 is a box with outlets at two ends. The shape of the ozone scrubbing unit 6 is not particularly required, and may be, for example, circular, square or other shapes. The ozone washing unit 6 comprises an accommodating cavity 61 and an ozone washing sheet 62 arranged in the accommodating cavity 61, the ozone washing sheet 62 is, for example, a metal wire mesh with an ozone washing layer loaded on the surface, the ozone washing layer is, for example, a copper oxide and manganese oxide titanium coating, and catalyzes and oxidizes ozone in the ozone-containing gas, and in addition, the ozone washing sheet 62 has, for example, a cylindrical metal wire mesh with a diameter of 5-50mm and a thickness of 5-15mm, and can, for example, be matched with the size of the accommodating cavity 61. Of course, the washing sheet 62 may be formed of a plurality of stacked circular wire nets, and is not particularly limited as long as it has a certain thickness and diameter and can filter and wash ozone from gas having a certain ozone content. Through the structure of the washing unit 6, the ozone in the gas to be detected can be fully removed, and then the incident light intensity I when the gas to be detected does not contain ozone can be obtained0. It should be understood that the construction of the ozone scrubbing unit as exemplified herein is a specific embodiment. Other structures can be selected and designed according to actual requirements, and are not limited to the structures.
Referring back to fig. 1, the sensing unit 7 is located in the box 1, and is connected to the pipeline 4 for performing a testing operation. The sensing unit 7 includes a sensing chamber 71, an ultraviolet light source 72, a first photo sensing unit 73, and a circuit sensing unit 74.
Referring to fig. 1 and 4, the sensing chamber 71 is located in the box body 1, and two ends of the sensing chamber 71 correspond to the ultraviolet light source 72 and the first photoelectric sensing unit 73, respectively. The sensing chamber 71 may be a glass tube with smooth surface, good light reflection performance and no absorption of ultraviolet light, such as a teflon tube. In order to enable the ozone concentration monitoring apparatus 100 to obtain reliable test data in the outdoor atmospheric environment, please refer to the schematic cross-sectional view of the sensing chamber 71 shown in fig. 5, wherein the inner wall of the sensing chamber 71 has a reflective film 711, which enhances the reflection of the ultraviolet light source 72 of the sensing unit 7 in the sensing chamber 71, reduces the light loss error caused by light absorption, and improves the accuracy of the test result. The material of the reflective film 711 may be, for example, a single-layer or multi-layer composite resin polymer, and the surface thereof may have inorganic particles, such as titanium dioxide, with a particle diameter of, for example, 0.1 μm to 1 μm. The reflective film 711 has excellent light reflectivity in a wavelength range of 400nm to 420 nm. In addition, the outer wall of the sensing chamber 71 may have a dark opaque film 712 to reduce the effect of the ultraviolet light in the surrounding environment on the measurement system.
Referring back to fig. 1, the ultraviolet light source 72 is disposed in the housing, and the ultraviolet light source 72 is, for example, a 250nm UV-LED lamp. In a specific embodiment of the present invention, the ultraviolet light source 72 is the ultraviolet light source after focusing, specifically, the focusing device 721 is installed at the front end of the sensing chamber 71, the focusing device 721 is composed of, for example, a plano-convex cylindrical lens and a micro-distance adjusting stage with high transmittance to ultraviolet light, the diffused ultraviolet light is converged into parallel ultraviolet light to irradiate the gas to be measured, and the sensitivity of the detection is improved.
Referring to fig. 1, the first photoelectric sensing unit 73 is disposed in the box 1, and is configured to receive the gas to be detected and the ultraviolet light signal of the gas to be detected after the ozone is removed, and output the ultraviolet light signal as an electrical signal. Specifically, one end of the first photoelectric sensing unit 73 is connected to the sensing chamber 72, and the other end is connected to the circuit sensing unit 74.
The first photo-sensing unit 73 may be, for example, a photodiode, a photo-sensing area of the photodiode is strictly controlled to obtain an accurate ozone concentration, for example, a photodiode with a photo-sensing area in a range of "6-13 mm" may be selected, when the photo-sensing area is higher than "13 mm", the photo-sensing area is too large, the capacitance is too large, output noise of the capacitance to a circuit is large, response speed is limited, measurement is slow, and a measurement error occurs, when the photo-sensing area is lower than "6 mm", the photo-sensing area is too small, a light spot is too small, an ultraviolet light beam cannot be completely obtained, and sensitivity is too low, accurate data cannot be obtained, so that a silicon photodiode with a photo-sensing area in the above range may obtain an ideal detection range without affecting stability of a measurement system, and obtain a reliable test result.
The silicon photodiode, in one embodiment of the present disclosure, may be available, for example, from the model S1226 silicon photodiode of the japan hamamatsu photonics corporation.
Referring to fig. 1, a circuit sensing unit 74 is located in the box 1, one end of the circuit sensing unit 74 is connected to the first photoelectric sensing unit 73, and the other end is connected to the data processing unit 8, the circuit sensing unit 74 is, for example, an amplifier, and an amplifying circuit, and is configured to perform differential amplification circuit processing on an electrical signal measured by the first photoelectric sensing unit 73, so as to amplify a difference value between an ultraviolet light intensity and the signal light, and thus, calculate the ozone concentration in the gas.
During the measurement operation, under the control of the solenoid valve 5, in a first period, the gas to be measured after ozone removal enters the sensing chamber 71, the ultraviolet light source 72 irradiates the gas to be measured after ozone removal in the sensing chamber 71, and outputs a first electrical signal through the first sensing unit 73 and the circuit sensing unit 74, and after the first electrical signal is collected by the data processing unit 8 as described above and described in detail below, a first sensing value is obtained, and in a second period, the gas to be measured directly enters the sensing chamber 71, the ultraviolet light source 72 irradiates the gas to be measured after ozone removal in the sensing chamber 71, and outputs a second electrical signal through the first sensing unit 73 and the circuit sensing unit 74, and after the second electrical signal is collected by the data processing unit 8 as described above and described in detail below, a second sensing value is obtained.
The utility model discloses in the measurement process, light source fluctuation and loss, power noise, sensing device itself include electric capacity, dark current etc. and form the noise, lead to measuring the deviation, the utility model discloses in through will forming incident light intensity I through the process0The gas to be tested after ozone removal and the gas to be tested forming the emergent light intensity I are sensed by the same sensing unit, errors of the instrument in the measuring process are eliminated in a difference mode, reliable test data are provided, and particularly, the reliable test data can be obtained for monitoring the concentration of low-concentration ozone, for example, the concentration of the ozone ranges from 0ppb to 10 ppb.
Referring to fig. 1, the data processing unit 8, such as, but not limited to, a desktop or laptop computer, a notebook computer, an ultra-thin pen, a tablet computer, a small pen, or other terminal processing device, is electrically connected to the sensing unit 7, and a predetermined ratio relationship, i.e., the ozone concentration c ═ Ln (I/I), is stored in the data processing unit 80) And/kl. Specifically, in an embodiment of the present disclosure, the data processing unit 8 is connected to the circuit sensing unit 74, and receives the first sensing value, i.e. the incident light intensity I, from the sensing unit 70And a second sensing value, i.e. the intensity of the emergent light I, calculating the concentration of ozone in the gas to be measured according to the measurement data of the first sensing value and the second sensing value, and displaying the concentration on the data processing unit 8.
Specifically, the data processing unit 8 includes a collector, a processor, a memory, and a display; the input end of the collector is connected with the output end of the circuit sensing unit 74, the electric signal of the sensing unit 7 is collected, the output end of the collector is connected with the input end of the processor, and the processed measurement data is stored in the first memory through the output end of the processor; the memory is connected with the display and displays the measuring result.
Referring to fig. 6, in another embodiment of the present disclosure, the sensing unit may further include a light splitting device 75 and a second photoelectric sensing unit 76. Specifically, a light splitting device 75, such as a beam splitter, is located between the light focusing device 721 and the sensing chamber 71 for forming a plurality of ultraviolet light paths. The second photoelectric sensing unit 76 is disposed inside the box body 1 and connected to the circuit sensing unit 74, and the second photoelectric sensing unit 76 is configured to receive an ultraviolet light signal of an ultraviolet light source in the ultraviolet light paths and output the ultraviolet light signal as an electrical signal, so as to obtain a third sensing value and detect stability of the ultraviolet light source. The second photo-sensing unit 76 and the first photo-sensing unit 73 may be, for example, the same or different silicon photodiodes.
Before or during the measurement operation, the light splitting device 9 splits the ultraviolet light source 71 into two light paths, for example, one light path passes through the sensing chamber 71, irradiates the gas to be measured and the gas to be measured after the ozone is removed, respectively obtains a first electrical signal and a second electrical signal through the first photoelectric sensing unit 73 and the sensing circuit 74, and calculates the ozone concentration through the data processing unit 8. The other optical path obtains a third electrical signal through the second photoelectric sensing unit 76 and the sensing circuit 74, and the data processing unit 8 calculates the third sensing value. The light splitting device 75 and the second photoelectric sensing unit 76 are used for controlling the light source to have smaller fluctuation, directly detecting the light source, and controlling the power of the light source by, for example, a constant current method, the third sensing value is a current value, and the data processing unit 8 adjusts the third sensing value to be always stabilized within a certain range through, for example, PID algorithm control, so that the light source is stabilized.
Referring to fig. 6, the monitoring device for ozone concentration 100 further includes a pressure and temperature measuring device 9 connected to the sensing chamber 71, wherein the pressure and temperature measuring device 9 includes a pressure sensor (not shown) and a temperature sensor (not shown) for sensing the pressure and temperature changes of the gas to be measured.
Figure 7 shows a flow chart of a monitoring method for ozone concentration of the present invention. The method for monitoring the concentration of ozone comprises the step 501-504 for measuring the concentration of gaseous ozone.
To sum up, the utility model discloses various shortcomings in the prior art have effectively been overcome and high industry value has. The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (7)
1. An ozone concentration monitoring device, comprising:
the pipeline contains a gas to be measured;
the electromagnetic valve is connected with the pipeline and used for controlling the flow of the gas to be detected so as to set a first period and a second period;
the ozone washing unit is connected with the pipeline and the electromagnetic valve, and is used for washing the ozone in the gas to be detected in the first period to obtain the gas to be detected after the ozone is washed;
the sensing unit is connected with the pipeline, senses the gas to be detected after the ozone removal in the first period to obtain a first sensing value, and senses the gas to be detected in the second period to obtain a second sensing value;
and the data processing unit is connected with the sensing unit and calculates the concentration of the ozone in the gas to be detected according to the first sensing value, the second sensing value and a preset ratio relation.
2. The apparatus for monitoring ozone concentration according to claim 1, wherein the sensing unit comprises:
a sensing chamber connected to the conduit;
the ultraviolet light source is positioned at one end of the sensing chamber and irradiates the gas to be detected;
the first photoelectric sensing unit is positioned at the other end of the sensing chamber, receives the gas to be detected and the ultraviolet light signal of the gas to be detected after the ozone is removed and outputs the ultraviolet light signal as an electric signal;
and the first photoelectric sensing unit is connected with the data processing unit through the circuit sensing unit and used for calculating the concentration of ozone in the gas to be detected.
3. The apparatus for monitoring ozone concentration according to claim 2, further comprising: a light focusing device positioned between the ultraviolet light source and the sensing chamber.
4. The apparatus for monitoring ozone concentration according to claim 3, wherein the sensing unit further comprises:
the light splitting device is positioned between the light condensing device and the sensing chamber and forms a plurality of ultraviolet light paths;
and the second photoelectric sensing unit is connected with the circuit sensing unit and the light splitting device.
5. The apparatus of claim 4, wherein the first photo-sensing unit and the second photo-sensing unit are the same or different silicon photodiodes.
6. The apparatus for monitoring ozone concentration according to claim 5, wherein the silicon photodiode has a light sensing area of 6-13 mm.
7. The apparatus according to claim 6, wherein the inner wall of the sensing chamber has a reflective film.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455734A (en) * | 2019-08-14 | 2019-11-15 | 合肥福瞳光电科技有限公司 | The monitoring method and its monitoring device of ozone concentration |
| CN112255187A (en) * | 2020-10-14 | 2021-01-22 | 合肥福瞳光电科技有限公司 | Ozone on-line measuring system |
| CN114354527A (en) * | 2022-01-14 | 2022-04-15 | 张全星 | Detection module of ozone concentration analyzer |
-
2019
- 2019-08-14 CN CN201921319839.6U patent/CN210923461U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110455734A (en) * | 2019-08-14 | 2019-11-15 | 合肥福瞳光电科技有限公司 | The monitoring method and its monitoring device of ozone concentration |
| CN112255187A (en) * | 2020-10-14 | 2021-01-22 | 合肥福瞳光电科技有限公司 | Ozone on-line measuring system |
| CN114354527A (en) * | 2022-01-14 | 2022-04-15 | 张全星 | Detection module of ozone concentration analyzer |
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