CN208953006U - A kind of ambient air quality monitoring device - Google Patents
A kind of ambient air quality monitoring device Download PDFInfo
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- CN208953006U CN208953006U CN201821504834.6U CN201821504834U CN208953006U CN 208953006 U CN208953006 U CN 208953006U CN 201821504834 U CN201821504834 U CN 201821504834U CN 208953006 U CN208953006 U CN 208953006U
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- sensor
- cylinder
- collection tube
- air
- detection
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Abstract
The utility model relates to a kind of ambient air quality monitoring device, including detection shell, hand-held part, air detection cylinder and collection tube are equipped in detection shell；Detection shell is far from being fixed with hollow hydraulic cylinder in the end of hand-held part, the hollow position that collection tube is inserted in hollow hydraulic cylinder is connect with hollow hydraulic cylinder, the center line of collection tube is located on the same line with air detection cylinder center line, and dust filter screen is provided in air detection cylinder one end in the collection tube, the TVOC sensor, carbon dioxide sensor, formaldehyde sensor, Temperature Humidity Sensor is embedded in respectively on the inner wall of air detection cylinder, structure is simple, the air of sealing space can be acquired, improve the rate of monitoring, while reducing use cost, the dust used for a long time is avoided to cover, causing monitoring data to occur, error is biggish to be happened, effectively raise the data of monitoring.
Description
Technical field
The utility model belongs to environmentally friendly science and technology field, further relates to a kind of ambient air quality monitoring device.
Background technique
Air quality is related to the health of people, and existing air monitering is usually the matter for monitoring outdoor air
Amount, structure is complicated, has a single function, somewhat expensive.
For the problems of above-mentioned, Chinese patent 201620139372.7 discloses a kind of ambient air monitoring dress
It sets, comprising: box body, box cover, rotary fixed bracket, PCB circuit board, WiFi module, PM2.5 sensor, TVOC sensor, dioxy
Change carbon sensor, formaldehyde sensor, temperature sensor, humidity sensor, mini-fan, RJ45 network mouth, DC12V base pad；
The box body and box cover cooperate, and rotary fixed bracket is set on box cover；PCB circuit board, WiFi module, PM2.5 sensor,
TVOC sensor, carbon dioxide sensor, formaldehyde sensor, temperature sensor, humidity sensor, mini-fan, RJ45 network
Mouth is set in box body；The PCB circuit board is separately connected WiFi module, PM2.5 sensor, TVOC sensor, carbon dioxide
Sensor, formaldehyde sensor, temperature sensor, humidity sensor, mini-fan, RJ45 network mouth.It can be seen that disclosed ring
Border air monitoring device can be monitored a variety of data, solve the problems, such as that presently, there are but this air detecting devices
During long-term practical, sensor is impacted because containing a large amount of dust in air, sensor is caused to monitor
Data inaccuracy, application condition is big, while when acquiring air, can not be to some closed spaces progress adopting at any time
Collection.
Utility model content
In order to overcome the disadvantages of the above prior art, the purpose of the utility model is to provide a kind of structure is simple, Neng Goutong
Cross equipped with telescopic head collection tube stretched to the space of sealing carry out the acquisition of air, while effectively raising the standard of monitoring
The ambient air quality monitoring device of true property.
In order to achieve the above objectives, the utility model uses following technical scheme, a kind of ambient air quality monitoring device, packet
Include PCB circuit board, WiFi module, communication module, PM. sensor, TVOC sensor, carbon dioxide sensor, formaldehyde sensor,
Temperature Humidity Sensor, the PM. sensor, TVOC sensor, carbon dioxide sensor, formaldehyde sensor and temperature and humidity sensing
Device is electrically connected with the CPU processor in PCB circuit board respectively, the WiFi module, communication module be located in PCB circuit board with
CPU processor electrical connection；Further include detection shell, the hand-held part below detection shell is set, is set in the detection shell
There are air detection cylinder and collection tube；The detection shell is described far from being fixed with hollow hydraulic cylinder in the end of hand-held part
Collection tube be inserted in the hollow position of hollow hydraulic cylinder and connect with hollow hydraulic cylinder, and collection tube is driven by hollow hydraulic cylinder
It carries out doing stretching motion in the end of acquisition shell, center line and the air detection cylinder center line of the collection tube are located at same
On straight line, and the collection tube enters in air detection cylinder when shrinking；The PM. sensor is arranged in collection tube
It is interior, and dust filter screen, the TVOC sensor, carbon dioxide are provided in air detection cylinder one end in the collection tube
Sensor, formaldehyde sensor, Temperature Humidity Sensor are embedded in respectively on the inner wall of air detection cylinder, and TVOC sensor, dioxy
Change carbon sensor, formaldehyde sensor, Temperature Humidity Sensor end to air detection cylinder inner wall distance be less than acquire drum outer wall
The distance between air detection cylinder inner wall, the detection shell are fixedly connected with extraction fan close to the end of hand-held part；
The inner cavity of hand-held part is divided into battery installation cavity and control panel installation cavity by the demarcation plate being equipped in the hand-held part,
The PCB circuit board is fixedly mounted in control panel installation cavity, and the battery installed in the battery installation cavity passes through hand-held
The switch button of portion side installation is connected to hollow hydraulic electric cylinders, extraction fan and PCB circuit board respectively.
The detection shell includes intermediate cylinder, is threadedly attached in the front cover of intermediate cylinder side and is threaded in
Between the cylinder other side rear cover, the intermediate cylinder close to installation hollow hydraulic cylinder one end inside be fixed with a baffle ring, it is described
Hollow hydraulic cylinder be fixed in the cavity formed between front cover and baffle ring；The extraction fan is fixedly connected on the end face of rear cover
On.
The air detection cylinder is fixedly connected in intermediate cylinder by sealing ring, and the end of the air detection cylinder extends
Into rear cover, for the collection tube when shrinking, the end of collection tube passes through front cover and baffle ring extends in intermediate cylinder.
The collection tube is connected with closing door far from the end of air detection cylinder.
The closing door includes the first door leaf and the second door leaf, and first door leaf and the second door leaf pass through connecting shaft
Connection, and the both ends of the connecting shaft are separately fixed on the center of collection tube end two sides, are led on first door leaf
It crosses screw and is fixedly connected with the first hinge, the second hinge is fixedly connected with by screw on second door leaf, described
One hinge and the second hinge are flexibly connected by shaft, and are arranged with torsional spring in the shaft, and one end of the torsional spring is pressed in the first conjunction
On page, the other end is pressed on the second hinge；First hinge and the second hinge is located at the interior of the first door leaf and the second door leaf
Side.
The air detection cylinder is fixed with cleaning filtration screen of air in the end of rear cover.
The end of the battery installation cavity is connected with buckle closure.
The beneficial effects of the utility model are: structure is simple, when being acquired to sealing space, collection tube can be reached close
It closes in space and carries out the acquisition of air, avoid people from entering in confined space, the personnel being monitored are caused with the injury of body,
It is able to carry out quick acquisition during acquisition simultaneously, and then is quickly obtained detection data, improves the rate of monitoring,
It avoids simultaneously and whole device is fixedly mounted in the space to be acquired, it, can be to dress while reducing use cost
Sensor in setting is protected, and the dust used for a long time is avoided to cover, and causes monitoring data that the biggish feelings of error occur
Condition occurs, and effectively raises the data of monitoring.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of Section A-A in the utility model；
Fig. 3 is that block diagram is electrically connected in the utility model.
In figure: 1.PCB circuit board；2.CPU processor；3.WiFi module；4. communication module；5.TVOC sensor；6. two
Aoxidize carbon sensor；7. formaldehyde sensor；8. Temperature Humidity Sensor；9.PM2.5 sensor；10. intermediate cylinder；11. front cover；12.
Rear cover；13. hollow hydraulic cylinder；14. collection tube；15. air detection cylinder；16. extraction fan；17. dust filter screen；18. hand-held part；
19. demarcation plate；20. control panel installation cavity；21. battery installation cavity；22. battery；23. closing door；24. buckle closure；25. switch is pressed
Button；26. baffle ring；27. cleaning filtration screen of air；28. sealing ring；231. first door leafs；232. second door leafs；233. connecting shaft；
234. screw；235. first hinges；236. second hinges；237. shaft；238. torsional spring.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawings and examples.
In the description of the present invention, it should be understood that term " center ", "upper", "lower", "front", "rear",
The orientation or positional relationship of the instructions such as "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is based on attached drawing institute
The orientation or positional relationship shown, is merely for convenience of describing the present invention and simplifying the description, rather than indication or suggestion is signified
Device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as to this is practical
Novel limitation.
Term " first ", " second " be used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance or
Implicitly indicate the quantity of indicated technical characteristic." first " is defined as a result, the feature of " second " can be expressed or imply
Ground includes one or more of the features；In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two
It is a or more than two.
Embodiment 1
A kind of ambient air quality monitoring device, including PCB circuit board 1, WiFi module 3, communication module 4, PM2.5 sensing
Device 9, TVOC sensor 5, carbon dioxide sensor 6, formaldehyde sensor 7, Temperature Humidity Sensor 8, the PM2.5 sensor 9,
TVOC sensor 5, carbon dioxide sensor 6, formaldehyde sensor 7 and Temperature Humidity Sensor 8 respectively with the CPU in PCB circuit board 1
Processor 2 is electrically connected, and the WiFi module 3, communication module 4 are located in PCB circuit board 1 and are electrically connected with CPU processor 2；Knot
Chinese patent 201620139372.7 disclosed in Fig. 3 and background technique is closed it is known that the PM2.5 center sensor has
A hole can allow air to flow freely over, directional transmissions LED light, judge ash by the light after detection dust in air refraction
The content of dirt, such as: very thin particle cigarette, smog, dust；TVOC sensor monitors indoor such as perfume, with odorous article
Washing article, decoration material come out smell；Carbon dioxide sensor breathes generation carbon dioxide for monitoring indoor people；
Formaldehyde sensor is for monitoring furniture paint containing formaldehyde, dyestuff, and the Temperature Humidity Sensor is for detecting indoor humidity
And temperature conditions, the data that particularly above-mentioned all sensors monitor pass through WIFI module after can handling by CPU
It is connect with communication module with cell phone application, realizes display and control program nearby, it can also be by cell phone application to the number monitored
According to preview is carried out, record, while the detection module in the present embodiment can also be replaced as needed, woth no need to detect two
Formaldehyde sensor can be changed to sulfur dioxide detection sensor by the concentration of sulfur oxide, and so on；Because of each mould in application
Connection relationship between block be all using technology disclosed in existing and Chinese patent 201620139372.7, therefore it is right at this
Its detailed structure be not described in detail.
On the basis of this disclosure, the present embodiment further includes detection shell as shown in Figure 1, and setting is below detection shell
Hand-held part 18, air detection cylinder 15 and collection tube 14 are equipped in the detection shell；The detection shell is far from hand-held
Be fixed with hollow hydraulic cylinder 13 in the end in portion 18, the collection tube 14 be inserted in the hollow position of hollow hydraulic cylinder 13 with
Hollow hydraulic cylinder 13 connects, and drives collection tube 14 to carry out doing flexible fortune in the end of acquisition shell by hollow hydraulic cylinder 13
Dynamic, center line and 15 center line of air detection cylinder of the collection tube 14 are located on the same line, and the collection tube
14 enter in air detection cylinder 15 when shrinking；The PM2.5 sensor 9 is arranged in collection tube 14, and in the acquisition
Cylinder 14 is provided with dust filter screen 17, the TVOC sensor 5, carbon dioxide sensor in 15 one end of air detection cylinder
6, formaldehyde sensor 7, Temperature Humidity Sensor 8 are embedded in respectively on the inner wall of air detection cylinder 15, and TVOC sensor 5, dioxy
Change carbon sensor 6, formaldehyde sensor 7, Temperature Humidity Sensor 8 end to 15 inner wall of air detection cylinder distance less than collection tube
The distance between 14 outer walls and 15 inner wall of air detection cylinder, it can be ensured that when collection tube 14 bounces back, collection tube can be normal
It enters in air detection cylinder 15, additionally it is possible to sensor will be protected, and avoid when not in use, contacting with air；It is described
Detection shell be fixedly connected with extraction fan 16 close to the end of hand-held part 18；
The inner cavity of hand-held part 18 is divided into battery installation cavity 21 and control by the demarcation plate 19 being equipped in the hand-held part 18
Plate installation cavity 20, the PCB circuit board 1 are fixedly mounted in control panel installation cavity 20, peace in the battery installation cavity 21
The battery 22 of dress by 18 side of hand-held part install switch button 25 respectively with hollow hydraulic electric cylinders 13, extraction fan 16 and PCB
Circuit board 1 is connected to.
The hollow hydraulic cylinder 13 pushes collection tube 14 to carry out stretching motion, when needing to be acquired detection to air
When, hollow hydraulic cylinder 13 releases collection tube 14 from detection shell, is acquired to air, and the extraction fan 16 can incite somebody to action
The air in environment that collection tube 14 protrudes into, which is pumped into collection tube 14, completes acquisition, is needing to carry out air to sealed environment to adopt
When collection, it is only necessary to look for a hole identical with 14 diameter of collection tube, guarantee that collection tube can extend into sealed environment, solve
It has determined when being monitored at present to sealed environment, has been merely able to first to will test device and is pre-installed in and detected in sealed environment
Defect can be monitored at any time, the cost of less detection, while carry out exhausting acquisition by extraction fan 16, accelerated and adopted
The rate of collection improves the rate of detection；The PM2.5 sensor 9 mainly adopts the PM2.5 entered in device
Collection is monitored by PM2.5 sensor 9, the air after the completion of detecting passes through ash first when air enters collection tube 14
Dirt filter screen 17 is filtered, which is mainly filtered dust granule, will not influence other in air to be examined
The numerical value of survey enters in detection cylinder 15 by filtered air, enters in detection cylinder 15, leads to by filtered air
TVOC sensor 5, carbon dioxide sensor 6, formaldehyde sensor 7 and Temperature Humidity Sensor 8 is crossed to detect its other parameters,
And the data that will test are sent to CPU processor and perform corresponding processing, which is to pass through
After PM2.5 filter screen, the dust in air can effectively be filtered, avoid for a long time use, the dust in air and
Particle adheres on sensor, and there are error, the situation for detecting inaccuracy occurs the data for causing sensor to monitor；
The hand-held part 18 of connection is convenient to hold device, and specific shape is similar to the shape of rifle, the hand-held part 18
It is integrated with detection shell, the battery being equipped with can provide power supply for the component of required electricity consumption in the device, specifically need
When using the device, hand pushes switch button 25, and extraction fan and hollow hydraulic cylinder are opened, and hollow hydraulic cylinder will acquire
Cylinder is released to detection shell, and the air in environment is pumped into collection tube and is acquired by extraction fan, while the battery is PCB electricity
Road plate is powered, and all modules are started to work, and is acquired processing to air, and the data after acquisition are sent to CPU
Processing module is handled, and the data after the completion of handling are sent in the APP of mobile phone terminal by wifi module or communication module
The record and analysis, the communication module for carrying out data can make one of 2G/3G/4G.
Further, convenient that maintenance or more sliding carried out to the component in whole device, during the detection shell includes
Between cylinder 10, the front cover 11 for being threadedly attached in 10 side of intermediate cylinder and the rear cover 12 for being threaded in 10 other side of intermediate cylinder,
The intermediate cylinder 10 is fixed with a baffle ring 26, the hollow hydraulic cylinder inside one end of installation hollow hydraulic cylinder 13
13 are fixed in the cavity formed between front cover 11 and baffle ring 26；The extraction fan 16 is fixedly connected on the end face of rear cover 12
On.The baffle ring 26 is structure as a whole with intermediate cylinder 10, and intermediate cylinder 10 is structure as a whole with hand-held part 18, during installation, will
The hollow hydraulic cylinder 13 for being equipped with collection tube is put into the intermediate cylinder of 26 side of baffle ring, and front cover 11 is then sequentially passed through acquisition
Cylinder is fixedly connected with intermediate cylinder, and hollow hydraulic cylinder 13 is mounted in intermediate cylinder, the extraction fan 16 by rear cover and
Intermediate cylinder is attached.
Further, for more convenient installation and leakproofness, the air detection cylinder 15 is solid by sealing ring 28
Surely it is connected between in cylinder 10, and the end of the air detection cylinder 15 extends in rear cover 12, the collection tube 14 is being shunk
When, the end of collection tube 14 passes through front cover 11 and baffle ring 26 extends in intermediate cylinder 10.During installation the outer diameter of sealing ring 28 with
The internal diameter of intermediate cylinder 10 is fixedly connected, and then air acquisition pipe 15 is pressed into sealing ring 28, is achieved a fixed connection, and facilitates dress
It unloads
Further, it in order to guarantee the protection to whole device, avoids during not using, air enters
In device, in device sensor and filter screen damage or premature filter screen made to reach load, the acquisition
14 ends far from air detection cylinder 15 of cylinder are connected with closing door 23.
Particularly closing door 23 as described in Figure 2 include the first door leaf 231 and the second door leaf 232, described first
Page 231 and the second door leaf 232 are connected by connecting shaft 233, and the both ends of the connecting shaft 233 are separately fixed at 14 end of collection tube
On the center of two sides, first hinge 235 is fixedly connected with by screw 234 on first door leaf 231, described the
Second hinge 236 is fixedly connected with by screw 234 on two door leafs 232, first hinge 235 and the second hinge 236 are logical
The flexible connection of shaft 237 is crossed, and is arranged with torsional spring 238 in the shaft 237, one end of the torsional spring 238 is pressed in the first hinge 235
On, the other end is pressed on the second hinge 236；First hinge 235 and the second hinge 236 is located at the first door leaf 231 and
The inside of two door leafs 232.At work, extraction fan carry out exhausting when, under the action of air-flow, closing door 23 open, air into
Enter and be monitored into device, made when extraction fan stops working, under the action of torsional spring, the first door leaf and the second door leaf are pushed
It is closed, avoids air and enter in device, effectively device is protected.
Further, in order to guarantee that the air detected will not be discharged without passing through processing, outside air is caused
Pollution, the air detection cylinder 15 are fixed with cleaning filtration screen of air 27 in the end of rear cover 12, the air cleaning
Filter screen 27 mainly absorbs the harmful substances such as formaldehyde, the sulfur dioxide contained in air.
Further, in order to guarantee at any time to replace battery, the end activity of the battery installation cavity 21 connects
It is connected to buckle closure 24.
Above embodiments are only to the utility model for example, not constituting to the protection scope of the utility model
Limitation, all designs the same or similar with the utility model belong within the protection scope of the utility model.
Claims (7)
1. a kind of ambient air quality monitoring device, including PCB circuit board (1), WiFi module (3), communication module (4), PM2.5
Sensor (9), TVOC sensor (5), carbon dioxide sensor (6), formaldehyde sensor (7), Temperature Humidity Sensor (8), it is described
PM2.5 sensor (9), TVOC sensor (5), carbon dioxide sensor (6), formaldehyde sensor (7) and Temperature Humidity Sensor
(8) it is electrically connected respectively with the CPU processor (2) on PCB circuit board (1), the WiFi module (3), communication module (4) are located at
It is electrically connected in PCB circuit board (1) with CPU processor (2)；It is characterized in that, further including detection shell, it is arranged in the case where detecting shell
The hand-held part (18) of side, the detection shell is interior to be equipped with air detection cylinder (15) and collection tube (14)；The detection shell
It is fixed with hollow hydraulic cylinder (13) in end far from hand-held part (18), the collection tube (14) is inserted in hollow hydraulic cylinder
(13) hollow position is connect with hollow hydraulic cylinder (13), and drives collection tube (14) adopting by hollow hydraulic cylinder (13)
Stretching motion is done in the end of collection shell, and center line and air detection cylinder (15) center line of the collection tube (14) are located at same
On straight line, and the collection tube (14) enters in air detection cylinder (15) when shrinking；The PM2.5 sensor
(9) setting is provided with dust filtering in collection tube (14), and in the collection tube (14) in air detection cylinder (15) one end
Net (17), the TVOC sensor (5), carbon dioxide sensor (6), formaldehyde sensor (7), Temperature Humidity Sensor (8) point
It is not embedded on the inner wall of air detection cylinder (15), and TVOC sensor (5), carbon dioxide sensor (6), formaldehyde sensor
(7), the distance of the end of Temperature Humidity Sensor (8) to air detection cylinder (15) inner wall is less than collection tube (14) outer wall and air is examined
The distance between cylinder (15) inner wall is surveyed, the detection shell is fixedly connected with extraction fan close to the end of hand-held part (18)
(16)；
The demarcation plate (19) being equipped in the hand-held part (18) by the inner cavity of hand-held part (18) be divided into battery installation cavity (21) and
Control panel installation cavity (20), the PCB circuit board (1) are fixedly mounted in control panel installation cavity (20), the battery peace
Behave affectedly switch button (25) that battery (22) for installing in (21) is installed by hand-held part (18) side respectively with hollow hydraulic cylinder
(13), extraction fan (16) is connected to PCB circuit board (1).
2. a kind of ambient air quality monitoring device according to claim 1, which is characterized in that the detection shell packet
Intermediate cylinder (10) are included, the front cover (11) of intermediate cylinder (10) side is threadedly attached in and to be threaded in intermediate cylinder (10) another
The rear cover (12) of side, the intermediate cylinder (10) are fixed with a baffle ring inside one end of installation hollow hydraulic cylinder (13)
(26), the hollow hydraulic cylinder (13) is fixed in the cavity formed between front cover (11) and baffle ring (26)；The exhausting
Fan (16) is fixedly connected on the end face of rear cover (12).
3. a kind of ambient air quality monitoring device according to claim 2, which is characterized in that the air detection cylinder
(15) it is fixedly connected in intermediate cylinder (10) by sealing ring (28), and the end of the air detection cylinder (15) extends to rear cover
(12) in, for the collection tube (14) when shrinking, the end of collection tube (14) passes through front cover (11) and baffle ring (26) extends to
In intermediate cylinder (10).
4. a kind of ambient air quality monitoring device according to claim 2, which is characterized in that the collection tube (14)
End far from air detection cylinder (15) is connected with closing door (23).
5. a kind of ambient air quality monitoring device according to claim 4, which is characterized in that the closing door (23)
Including the first door leaf (231) and the second door leaf (232), first door leaf (231) and the second door leaf (232) pass through connecting shaft
(233) it connects, and the both ends of the connecting shaft (233) are separately fixed on the center of collection tube (14) end two sides, it is described
The first door leaf (231) on be fixedly connected with the first hinge (235) by screw (234), lead on second door leaf (232)
It crosses screw (234) to be fixedly connected with the second hinge (236), first hinge (235) and the second hinge (236) pass through shaft
(237) it is flexibly connected, and is arranged with torsional spring (238) in the shaft (237), one end of the torsional spring (238) is pressed in the first hinge
(235) on, the other end is pressed on the second hinge (236)；First hinge (235) and the second hinge (236) is located at first
The inside of door leaf (231) and the second door leaf (232).
6. a kind of ambient air quality monitoring device according to claim 2, which is characterized in that the air detection cylinder
(15) cleaning filtration screen of air (27) are fixed in the end of rear cover (12).
7. a kind of ambient air quality monitoring device according to claim 1, which is characterized in that the battery installation cavity
(21) end is connected with buckle closure (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821504834.6U CN208953006U (en) | 2018-09-14 | 2018-09-14 | A kind of ambient air quality monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821504834.6U CN208953006U (en) | 2018-09-14 | 2018-09-14 | A kind of ambient air quality monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208953006U true CN208953006U (en) | 2019-06-07 |
Family
ID=66737967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821504834.6U Expired - Fee Related CN208953006U (en) | 2018-09-14 | 2018-09-14 | A kind of ambient air quality monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208953006U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060042A (en) * | 2018-09-14 | 2018-12-21 | 陕西众策网络科技发展有限公司 | A kind of ambient air quality monitoring device |
| CN110136397A (en) * | 2019-06-15 | 2019-08-16 | 徐州恒宝安全设备有限公司 | A kind of formaldehyde pernicious gas intelligent testing and warning system |
-
2018
- 2018-09-14 CN CN201821504834.6U patent/CN208953006U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060042A (en) * | 2018-09-14 | 2018-12-21 | 陕西众策网络科技发展有限公司 | A kind of ambient air quality monitoring device |
| CN110136397A (en) * | 2019-06-15 | 2019-08-16 | 徐州恒宝安全设备有限公司 | A kind of formaldehyde pernicious gas intelligent testing and warning system |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190607 Termination date: 20210914 |
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| CF01 | Termination of patent right due to non-payment of annual fee |