CN212301495U - Formaldehyde detection and purification device and indoor formaldehyde intelligent monitoring system - Google Patents
Formaldehyde detection and purification device and indoor formaldehyde intelligent monitoring system Download PDFInfo
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- CN212301495U CN212301495U CN202021168349.3U CN202021168349U CN212301495U CN 212301495 U CN212301495 U CN 212301495U CN 202021168349 U CN202021168349 U CN 202021168349U CN 212301495 U CN212301495 U CN 212301495U
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Abstract
The utility model discloses a formaldehyde detects and purifier and indoor formaldehyde intelligent monitoring system, the device passes through the formaldehyde sensor and realizes the real-time detection to inhaling in the shell formaldehyde content in the gas, and through microprocessor analysis processes, open the air discharge fan in good time, carry out purification treatment to the air through adsorbing filtering component, whole device integrated level is high, the structure is small and exquisite, and can realize formaldehyde detection and get rid of dual function, the function is more perfect, simultaneously can also be through communication chip automatic with data transmission to relevant terminal equipment, it is more convenient that the data upload, intelligent degree is higher. This system links up formaldehyde detection and purifier with user terminal through the server, and the user can the indoor formaldehyde content of remote monitoring to can remote control formaldehyde detection and purifier's working parameter and operating condition, more intelligent efficient has realized the control work to indoor formaldehyde.
Description
Technical Field
The utility model relates to an intelligence house and wireless communication technical field, more specifically the utility model relates to a formaldehyde detects and purifier and indoor formaldehyde intelligent monitoring system that says so.
Background
The formaldehyde is colorless liquid which is easily dissolved in water, has strong volatility and pungent smell, is one of gases which are mainly harmful to human health in indoor air, is mainly derived from building materials, furniture, artificial boards, various adhesive coatings, synthetic textiles and the like, has the maximum allowable concentration of 0.08 mg/cubic meter of formaldehyde in the indoor air, can cause people to feel peculiar smell and uncomfortable feeling when the content of the formaldehyde in the indoor air is 0.30 mg/cubic meter, can stimulate eyes to cause lacrimation when the content of the formaldehyde in the indoor air reaches 0.50 mg/cubic meter, can cause discomfort or pain of throats when the content of the formaldehyde in the indoor air reaches 0.60 mg/cubic meter, can cause nausea, vomiting, cough, chest distress, gasp and even emphysema when the concentration of the formaldehyde in the indoor air is higher, and can cause death when the content of the formaldehyde in the indoor air reaches 30 mg/cubic meter.
Along with the increasing health consciousness of people, a plurality of formaldehyde removing products are produced at the same time, but most of the existing formaldehyde removing products have the following problems:
(1) part of the product technology is not mature enough, the function is still in the propaganda stage, the effect of removing formaldehyde is insubstantial, the formaldehyde can not be removed while the formaldehyde is detected, and the product can not be integrated into the smart home and only can be used as independent equipment.
(2) A few products have a substantial formaldehyde removal effect, but are expensive, most people cannot consume the products in a long-distance real-time manner, the products can only alarm locally, and the data cannot be checked when the users are not at home.
(3) Traditional product volume of getting rid of formaldehyde is too heavy, needs the manual work to detect moreover, and the computer is uploaded to through the storage card to the detected data, and intelligent degree is low, and operating procedure is loaded down with trivial details.
Therefore, it is an urgent need to solve the problem of the art to provide a formaldehyde detection and purification device with complete functions, better formaldehyde removal effect, and capability of implementing remote communication.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a formaldehyde detects and purifier and indoor formaldehyde intelligent monitoring system, the device integrated level is high, remove the formaldehyde effect more excellent, and has communication function, has solved current formaldehyde product function perfect inadequately, bulky and intelligent degree low grade problem.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
on the one hand, the utility model provides a formaldehyde detects and purifier, the device includes: the formaldehyde adsorption device comprises a shell, and a formaldehyde sensor, a microprocessor, a communication chip, an air suction fan, an exhaust fan, a power supply and an adsorption filtering component which are arranged in the shell;
be equipped with induction port and gas vent on the shell, the formaldehyde sensor with the fan of breathing in all sets up in being close to the position of induction port, the air discharge fan is located and is close to the position of gas vent, microprocessor, communication chip and power supply all encapsulate in the shell bottom, adsorb filtering component fixed mounting in the shell middle part, formaldehyde sensor, communication chip, the fan of breathing in, air discharge fan and power supply all with the microprocessor electricity is connected.
The utility model has the advantages that: realize the real-time detection to inhaling formaldehyde content in the shell internal gas through the formaldehyde sensor to through microprocessor analysis processes, open the air discharge fan in good time, carry out purification treatment to the air through adsorption and filtration subassembly, whole device integrated level is high, the structure is small and exquisite, and can realize that formaldehyde detects and gets rid of dual function, the function is more perfect, simultaneously can also be through communication chip automatic with data transmission to relevant terminal equipment, it is more convenient that data upload, intelligent degree is higher.
Further, foretell formaldehyde detection and purifier still includes the display screen, the display screen inlays the dress on the shell, the display screen with microprocessor electricity is connected.
Further, the formaldehyde sensor is a nano zinc oxide formaldehyde sensor. The sensor adopts a domestic pioneer nano zinc oxide formaldehyde sensor, and can more accurately and reliably detect the formaldehyde content in the air.
Further, the microprocessor adopts an ARM processor with a core of Cortex-M3.
Further, the model of the communication chip is CC 2530. The CC2530 chip is a true system-on-chip (SOC) solution for 2.4GHz, IEEE802.15.4, ZigBee, and RF4CE applications that enables the creation of powerful network nodes at very low overall material costs. The CC2530 employs a 2.4-GHz IEEE802.15.4 compliant RF transceiver, low power, microcontroller, 8-KB RAM and many other powerful functions. CC2530 has four different flash versions: CC2530F32, CC2530F64, CC2530F128, CC2530F256 have flash memory of 32KB, 64KB, 128KB, 256KB, respectively. The CC2530 has different modes of operation so that it accommodates systems with ultra-low power requirements. The switching time between the operating modes is short, further ensuring low energy consumption.
Further, adsorption and filtration subassembly includes leading filter screen, rearmounted filter screen and adsorption and filtration core, leading filter screen, rearmounted filter screen and adsorption and filtration core arrange in proper order along gas flow direction, and gaseous warp the great particulate matter of leading filter screen filtering passes through again rearmounted filter screen filtering fine particles passes through again behind the harmful gas including adsorption and filtration core absorption contains formaldehyde, the warp the gas vent is discharged.
On the other hand, the utility model also provides an indoor formaldehyde intelligent monitoring system, this system includes user terminal, server and at least one above-mentioned formaldehyde detection and purification device, user terminal and formaldehyde detection and purification device respectively with server communication connection;
the formaldehyde detection and purification device detects the indoor formaldehyde content in real time through a formaldehyde sensor in the formaldehyde detection and purification device, analyzes and processes the formaldehyde content data through a microprocessor, generates early warning information and starts an exhaust fan when the formaldehyde content exceeds the standard, purifies the indoor air through the adsorption and filtration assembly, and reports the formaldehyde content data and the early warning information to the user terminal through a communication chip through the server; the server is also used for providing information link and data support for the user terminal to realize registration login, set a formaldehyde content threshold value and control the working state function of the formaldehyde detection and purification device.
Further, when a plurality of formaldehyde detection and purification devices are arranged, the system further comprises a ZigBee network coordinator, the formaldehyde detection and purification devices are in communication connection with the ZigBee network coordinator, the ZigBee network coordinator is in communication connection with the server, and the server is in communication connection with the user terminal. The ZigBee network coordinator is the core of the whole ZigBee network, formaldehyde concentration data or other data detected by all terminal nodes (namely formaldehyde detection and purification devices) can be transmitted to the ZigBee network coordinator through the ZigBee wireless network for summarizing, and the ZigBee network coordinator can execute certain functions preset by the system after summarizing.
According to the technical scheme, compare with prior art, the utility model discloses an indoor formaldehyde intelligent monitoring system, this system link up formaldehyde detection and purifier with user terminal through the server, and the user can the interior formaldehyde content of remote monitoring to can remote control formaldehyde detection and purifier's working parameter and operating condition, more intelligent efficient has realized the control work to indoor formaldehyde.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is an exploded view of a part of the structure of a formaldehyde detecting and purifying device provided by the present invention;
FIG. 2 is a schematic view of an electrical connection structure of some devices in the formaldehyde detecting and purifying apparatus according to an embodiment of the present invention;
fig. 3 is a schematic view of the installation positions of the front-mounted filter screen and the display screen in the embodiment of the present invention;
FIG. 4 is a schematic view of the overall structure of the formaldehyde detecting and purifying device according to the embodiment of the present invention;
FIG. 5 is an enlarged schematic view of a part of the structure of the formaldehyde detecting and purifying apparatus according to the embodiment of the present invention;
FIG. 6 is a schematic view of the flow direction of the gas inside the formaldehyde detecting and purifying device according to the embodiment of the present invention;
FIG. 7 is a schematic view of the working principle of the formaldehyde detecting and purifying device in the embodiment of the present invention;
FIG. 8 is a functional schematic diagram of the formaldehyde detecting and purifying device according to the embodiment of the present invention;
fig. 9 is a schematic structural diagram of an indoor formaldehyde intelligent monitoring system provided by the present invention;
fig. 10 is a schematic diagram of a network structure architecture of an indoor formaldehyde intelligent monitoring system according to an embodiment of the present invention;
fig. 11 is the embodiment of the utility model provides an indoor formaldehyde intelligent monitoring system's theory of operation schematic diagram.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
On the one hand, see attached figure 1 and fig. 2, the embodiment of the utility model discloses a formaldehyde detection and purifier, the device includes: the formaldehyde emission device comprises a shell 11, and a formaldehyde sensor 12, a microprocessor 13, a communication chip 14, an air suction fan 15, an exhaust fan 16, a power supply 17 and an adsorption filter assembly 18 which are arranged in the shell 11;
be equipped with induction port and gas vent on the shell 11, formaldehyde sensor 12 and air suction fan 15 all set up in the position that is close to the induction port, the position that is close to the gas vent is located to air discharge fan 16, microprocessor 13, communication chip 14 and power supply 17 all encapsulate in the bottom of shell 11, adsorb filter assembly 18 fixed mounting in the middle part of shell 11, formaldehyde sensor 12, communication chip 14, air suction fan 15, air discharge fan 16 and power supply 17 all are connected with microprocessor 13 electricity.
Preferably, referring to fig. 3 and 4, the formaldehyde detecting and purifying device further includes a display screen 19, the display screen 19 is embedded in the housing 11, and the display screen 19 is electrically connected to the microprocessor 13. Specifically, in this embodiment, the OLED display screen is used, and the user can directly view the formaldehyde content data through the OLED display screen.
Specifically, the formaldehyde sensor 12 is a nano zinc oxide formaldehyde sensor. The sensor adopts a domestic pioneer nano zinc oxide formaldehyde sensor (nano ZnO synthesis, HCHO → CO)2) And in this embodiment, the formaldehyde data is collected uniformly through the nodes.
In particular, the microprocessor 13 employs an ARM processor having a core Cortex-M3. The Cortex-M3 processor occupies a significant position in the embedded field due to its powerful instruction system, high data storage speed, wide application field and flexible development tool. The Cortex-M3 treater is used to get rid of the dependence of traditional formaldehyde detecting system and remove device to PC at one stroke, can be under the prerequisite of low cost, low-power consumption convenient and fast acquire indoor formaldehyde concentration information, and is convenient high-efficient more.
Specifically, the model number of the communication chip 14 is CC 2530. The CC2530 chip is a true system-on-chip (SOC) solution for 2.4GHz, ieee802.15.4, ZigBee, and RF4CE applications that enables the creation of powerful network nodes at very low overall material costs. The CC2530 employs a 2.4-GHz IEEE802.15.4 compliant RF transceiver, low power, microcontroller, 8-KB RAM and many other powerful functions. CC2530 has four different flash versions: CC2530F32, CC2530F64, CC2530F128, CC2530F256 have flash memory of 32KB, 64KB, 128KB, 256KB, respectively. The CC2530 has different modes of operation so that it accommodates systems with ultra-low power requirements. The switching time between the operating modes is short, further ensuring low energy consumption.
Specifically, the power supply 17 selects a rechargeable lithium battery to supply power to the whole device, so as to provide lasting cruising ability, and a charging port can be arranged on the shell to charge the lithium battery.
Specifically, referring to fig. 5 and fig. 6, the adsorption and filtration assembly 18 includes a front filter screen 181, a rear filter screen 182, and an adsorption and filtration core 183, the front filter screen 181, the rear filter screen 182, and the adsorption and filtration core 183 are sequentially arranged along a gas flow direction, the gas is filtered from larger particles by the front filter screen 181, then filtered from fine particles by the rear filter screen 182, and then exhausted from the exhaust port after adsorbing harmful gas including formaldehyde by the adsorption and filtration core 183. In fig. 6, arrows inside the device indicate the flow direction of the gas, two hollow arrows outside the device indicate that the formaldehyde data is displayed through the display screen, and the formaldehyde data is uploaded to the user terminal.
The filter element can be cleaned and replaced after adsorption in the embodiment, the filter element is more energy-saving and environment-friendly, and when the filter element needs to be replaced, the device can display and prompt the filter element to be replaced through the display screen.
Referring to the attached drawings 7 and 8, indoor air enters from an air inlet of the device, a formaldehyde sensor detects the concentration of formaldehyde sucked into the air inlet, and real-time data is monitored through a ZigBee technology, specifically, when the formaldehyde sensor detects that the concentration of formaldehyde in the indoor air reaches a set threshold concentration, a GSM network remote alarm (realized through a communication chip) is performed, an exhaust fan is started simultaneously, air flow flows in a shell of the device, formaldehyde in 10 square meters can be removed to be below 0.05mg/m3 within 5 minutes through an adsorption filtering component, when the concentration of formaldehyde is lower than the set threshold value, the exhaust fan is closed, the device can be automatically opened and closed according to the concentration of formaldehyde or the air pollution degree, wherein, a 1 st stage in the adsorption filtering component adopts a front-arranged filter screen to treat large-particle pollutants, a 2 nd stage adopts an HEPA rear-arranged filter screen to intercept fine particles such as PM2.5, a 3 rd stage adopts novel active carbon with silver ions as a filter core to adsorb harmful gases such as formaldehyde, the filter element can be used circularly after being exposed to the sun.
On the other hand, referring to fig. 9 and fig. 10, the embodiment of the present invention further discloses an indoor formaldehyde intelligent monitoring system, which includes a user terminal 2, a server 3 and at least one formaldehyde detecting and purifying device 1, wherein the user terminal 2 and the formaldehyde detecting and purifying device 1 are respectively in communication connection with the server 3;
the formaldehyde detection and purification device 1 detects the indoor formaldehyde content in real time through a formaldehyde sensor 12 in the device, analyzes and processes the formaldehyde content data through a microprocessor 13, generates early warning information when the formaldehyde content exceeds the standard, starts an exhaust fan 16, purifies the indoor air through an adsorption filtering component 18, and reports the formaldehyde content data and the early warning information to the user terminal 2 through a communication chip 14 through a server 3; the server 3 is also used for providing information link and data support for the functions of realizing registration login, setting a formaldehyde content threshold value and controlling the working state of the formaldehyde detection and purification device 1 of the user terminal 2.
Preferably, when the formaldehyde detection and purification devices 1 are provided with a plurality of formaldehyde detection and purification devices, the system further comprises a ZigBee network coordinator 4, the formaldehyde detection and purification devices 1 are in communication connection with the ZigBee network coordinator 4, the ZigBee network coordinator 4 is in communication connection with the server 3, and the server 3 is in communication connection with the user terminal 2.
Specifically, each formaldehyde detection and purification device 1 is a ZigBee wireless network node, and the networking mode of a plurality of ZigBee wireless network nodes is a mesh type. And other sensing nodes and control nodes except a ZigBee network Coordinator (Coordinator) are all routes (routers). Thus, when one node does not work, other nodes are not affected. Specifically, the control node mentioned herein refers to a microprocessor inside the formaldehyde detecting and purifying device. The routing refers to a routing node (actually, in order to enable the network to have a more flexible routing topology, all nodes in the network may be configured as an FFD, that is, each node may be a terminal node or a routing node, and a node which is started first and responsible for establishing the whole sensing network is a sink node of the ZigBee network).
The user terminal 2 mentioned in this embodiment may be an intelligent terminal device such as a mobile phone and a computer, and specifically, the display of the human-computer interaction interface may be realized through a PC client or a wechat applet.
The embodiment of the utility model provides a system disclosed uses the zigBee technique to communicate, and the zigBee technique is a two-way wireless communication technique closely, low complexity, low-power consumption, low speed, low cost. The wireless data transmission device has the transmission rates of up to 250kbit/s, 20kbit/s and 40kbit/s respectively, and is mainly used for data transmission among various electronic devices with short distance, low power consumption and low transmission rate and typical application of periodic data, intermittent data and low-reaction-time data transmission. The technology starts in 2002, develops rapidly in the last decade, and has wide application prospects in industry and Internet of things. The ZigBee technology can be used for conveniently establishing a family wireless network, the trouble of wiring is saved, a unified standard is formulated for household equipment, and meanwhile, the requirement of attractiveness is met.
Referring to fig. 10 and fig. 11, the general workflow of the above system disclosed by the embodiment of the present invention is as follows:
step 1: a user remotely accesses a server through a monitoring terminal (such as a PC (personal computer) and a mobile phone), the server can send an instruction to an indoor Zigbee wireless network coordinator through a serial port (UATR) according to the requirement of the user, the formaldehyde concentration threshold value set by the formaldehyde detection and purification device can be changed, and the device can be remotely controlled to operate;
step 2: a plurality of formaldehyde detection and purification devices (similar to Zigbee sensor nodes) can be arranged indoors to acquire formaldehyde concentration data of each corner, the formaldehyde concentration data are transmitted to a Zigbee coordinator node through a Zigbee wireless network, the data are transmitted to a server through a serial port (UATR), and finally the sensor data are transmitted to a remote monitoring terminal;
and step 3: the data collected by a sensor in the device can be received by the intelligent monitoring terminal indoors, and the preset threshold value of the indoor formaldehyde concentration in the device can be changed;
and 4, step 4: the device is through the domestic first nanometer zinc oxide formaldehyde sensor (nanometer ZnO is synthetic, HCHC → CO2) formaldehyde concentration in the real-time detection room air, carry out the analysis to formaldehyde concentration through microprocessor, can be when formaldehyde concentration exceeds standard self-starting (open the exhaust fan), carry out purification treatment to room air through the filtration purification subassembly, 1 st level adopts leading filter screen to handle great granule pollutant in the filtration purification subassembly, 2 nd level adopts HEPA postposition filter screen to eliminate PM2.5 and adsorbs smog, 3 rd level adopts taking silver ion zeolite active carbon to adsorb harmful gas such as formaldehyde, and when detecting formaldehyde concentration and being less than preset concentration threshold value, automatic shutdown (close the exhaust fan), thereby make indoor formaldehyde concentration control in a reasonable within range, and show formaldehyde concentration in real time through the display screen.
And 5: when the sensor collects alarm data (such as the concentration of formaldehyde exceeds a preset threshold), an alarm signal is sent to a ZigBee wireless network Coordinator (Coordinator) through a communication chip, then the alarm signal is transmitted to a server in the embedded gateway through a serial port (UATR), and finally the alarm signal is sent to a monitoring terminal (such as a mobile phone of a user) through a GSM network. Specifically, the formaldehyde detection and purification device can be in communication connection with the user terminal through the wireless router.
To sum up, the embodiment of the utility model discloses a formaldehyde detects and purifier and indoor formaldehyde intelligent monitoring system compares with prior art, has following advantage:
1. the device has the functions of formaldehyde detection and air purification, can detect the concentration of formaldehyde in real time, can automatically start to purify air when the concentration of formaldehyde exceeds the standard, ensures that the content of formaldehyde in indoor air is in a normal range, and is more intelligent and efficient;
2. the device has simple and small structure, is convenient to carry, adopts replaceable and cleanable filter elements, and is more energy-saving and environment-friendly.
3. The system can realize the remote monitoring function, and the user can look over indoor formaldehyde concentration, receive early warning information through terminal equipment at any time, can also remote control equipment operating condition, and intelligent degree is higher, and data upload and storage are more convenient.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (8)
1. The utility model provides a formaldehyde detects and purifier which characterized in that includes: the formaldehyde absorption device comprises a shell (11), and a formaldehyde sensor (12), a microprocessor (13), a communication chip (14), an air suction fan (15), an exhaust fan (16), a power supply (17) and an adsorption filtering component (18) which are arranged in the shell (11);
be equipped with induction port and gas vent on shell (11), formaldehyde sensor (12) with fan (15) of breathing in all set up in being close to the position of induction port, exhaust fan (16) are located and are close to the position of gas vent, microprocessor (13), communication chip (14) and power supply (17) all encapsulate in the bottom of shell (11), adsorb filtering component (18) fixed mounting in the middle part of shell (11), formaldehyde sensor (12), communication chip (14), fan (15) of breathing in, exhaust fan (16) and power supply (17) all with microprocessor (13) electricity is connected.
2. A formaldehyde detecting and purifying device according to claim 1, further comprising a display screen (19), wherein the display screen (19) is embedded in the housing (11), and the display screen (19) is electrically connected to the microprocessor (13).
3. The formaldehyde detecting and purifying device according to claim 1, wherein the formaldehyde sensor (12) is a nano zinc oxide formaldehyde sensor.
4. The formaldehyde detection and purification device as claimed in claim 1, wherein the microprocessor (13) employs an ARM processor with core Cortex-M3.
5. The formaldehyde detecting and purifying device as claimed in claim 1, wherein the communication chip (14) is CC 2530.
6. The formaldehyde detection and purification device according to claim 1, wherein the adsorption and filtration component (18) comprises a front filter screen (181), a rear filter screen (182) and an adsorption and filtration core (183), the front filter screen (181), the rear filter screen (182) and the adsorption and filtration core (183) are sequentially arranged along a gas flow direction, gas is filtered from larger particles by the front filter screen (181), fine particles are filtered by the rear filter screen (182), and harmful gas containing formaldehyde is adsorbed by the adsorption and filtration core (183) and then discharged from the gas outlet.
7. An indoor formaldehyde intelligent monitoring system, which is characterized by comprising a user terminal (2), a server (3) and at least one formaldehyde detection and purification device (1) as claimed in any one of claims 1 to 6, wherein the user terminal (2) and the formaldehyde detection and purification device (1) are respectively in communication connection with the server (3);
the formaldehyde detection and purification device (1) detects indoor formaldehyde content in real time through a formaldehyde sensor (12) in the device, analyzes and processes formaldehyde content data through a microprocessor (13), generates early warning information when the formaldehyde content exceeds a standard, starts the exhaust fan (16), purifies indoor air through the adsorption and filtration component (18), and reports the formaldehyde content data and the early warning information to the user terminal (2) through the server (3) through a communication chip (14).
8. The intelligent indoor formaldehyde monitoring system according to claim 7, wherein when a plurality of formaldehyde detecting and purifying devices (1) are provided, the intelligent indoor formaldehyde monitoring system further comprises a ZigBee network coordinator (4), the plurality of formaldehyde detecting and purifying devices (1) are in communication connection with the ZigBee network coordinator (4), the ZigBee network coordinator (4) is in communication connection with the server (3), and the server (3) is in communication connection with the user terminal (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021168349.3U CN212301495U (en) | 2020-06-22 | 2020-06-22 | Formaldehyde detection and purification device and indoor formaldehyde intelligent monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021168349.3U CN212301495U (en) | 2020-06-22 | 2020-06-22 | Formaldehyde detection and purification device and indoor formaldehyde intelligent monitoring system |
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| Publication Number | Publication Date |
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| CN212301495U true CN212301495U (en) | 2021-01-05 |
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| CN202021168349.3U Expired - Fee Related CN212301495U (en) | 2020-06-22 | 2020-06-22 | Formaldehyde detection and purification device and indoor formaldehyde intelligent monitoring system |
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