CN115656424A - Air quality perception monitoring and early warning system - Google Patents
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Abstract
The invention discloses an air quality perception monitoring and early warning system which comprises an air quality perception monitoring sensor instrument, a cloud server and a liquid crystal display module, wherein the air quality perception monitoring sensor instrument is installed in an indoor scene and comprises a plurality of groups of sensor modules, an MCU (microprogrammed control unit) and a wireless communication module, and the plurality of groups of sensor modules comprise CO 2 The system can detect and display various real-time data of temperature, humidity, formaldehyde and PM2.5, the system collects indoor temperature and humidity, formaldehyde content and PM2.5 content through the built sensor elements and displays the collected data in real time, in addition, the collected data is compared with a setting value set in the cloud server, and when the data is not suitable, the collected data is compared with the setting value set in the cloud serverAnd sending an alarm prompt in the standard time, taking measures in time and recording the visual presentation of data within a certain time.
Description
Technical Field
The invention relates to the technical fields of sensing, information acquisition, monitoring, early warning and the like of different gas components in air, in particular to an air quality sensing monitoring and early warning system.
Background
Along with the development of society and the great improvement of human living standard, the quality of household environment is a focus of attention, and the data such as temperature and humidity, the content of PM2.5 which can be inhaled particles, the content of harmful gas and the like in household life are most concerned because of being closely related to health.
According to related data, the health of a human body is greatly influenced by a temperature and humidity environment, the human body feels most comfortable when the temperature is controlled to be 17-26 ℃ and the humidity is controlled to be 43-67% RH in a daily household, and the human body organs, particularly a respiratory system, of the human body can be greatly damaged when the human body lives in an air environment with the humidity lower than 43-RH for a long time, the PM2.5 has small particle size, large area and strong activity, is easy to be accompanied by toxic and harmful substances, has long retention time in the atmosphere and long conveying distance, so the influence on the health of the human body and the quality of the atmospheric environment is larger, the formaldehyde is a novel household pollution source caused by excessive decoration materials in recent years, is colorless, has pungent smell, can damage cell proteins of the human body after the respiratory system enters the human body, and further causes great damage to the organs, particularly the respiratory system and the nervous system of the human body.
For the newly released 'indoor air quality standard', the standard strictly defines various standards of home environment quality, particularly defines the content health standard of each pollution source, and provides scientific reference for identifying the home environment quality of residents, in recent years, the pollution of the external environment is more serious, and people increasingly desire to meet the basic work and life indoors and provide a safe, comfortable and warm environment for the people.
At present, similar air quality monitoring and early warning device are more in the market, however all have the commonality problem:
(1) The format and the interactive flow of the information frame are not clear, the frame structure used for each important information interaction step is not clearly defined, and messy codes and error codes are easy to occur in frequent information interaction between the air quality monitoring terminal and the cloud server, so that the system has no specificity, effectiveness and practicability;
(2) The information acquisition and communication density is not adjustable, the energy consumption is high, the same transmission speed is adopted for frequent information exchange, the sensing result of high acquisition density when the sensing result exceeds the monitoring threshold value cannot be obtained in time, and unnecessary energy consumption is caused.
Disclosure of Invention
The invention aims to provide an air quality perception monitoring and early warning system, which aims to solve the problems of unclear information frame format and interaction flow, non-adjustable information acquisition and communication density and high energy consumption in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme: the air quality perception monitoring and early warning system comprises an air quality perception monitoring sensor instrument, a cloud server and a liquid crystal display module which are installed in an indoor scene, wherein the air quality perception monitoring sensor instrument comprises a plurality of groups of sensor modules, a MCU (micro control unit) and a wireless communication module, and the sensor modules comprise a CO 2 The system comprises a concentration sensor, a PM2.5 sensor, a PM10 sensor, a formaldehyde sensor, a VOCs sensor, a temperature and humidity sensor and a particulate matter sensor, wherein the output ends of a plurality of groups of sensor modules are in one-way electric connection with the input end of an MCU (microprogrammed control unit), the output end of the MCU is in interactive electric connection with a data acquisition module, the output end of the data acquisition module is in interactive electric connection with the input end of a wireless communication module, the output end of the wireless communication module is in one-way electric connection with the input end of a liquid crystal display module, and the output end of the wireless communication module is in interactive electric connection with the input end of a cloud server; the cloud server is used for receiving and processing air quality data information monitored by the air quality perception monitoring sensor instrument, packaging related information into an operation state data request packet, receiving the operation state data request packet from the wireless communication module by the terminal, and returning the operation state data response packet and data by the terminalReceiving the return packet, and storing and analyzing the return packet; the wireless communication module is provided with a high-speed transmission mode and a common transmission mode at the same time; the cloud server acquires a data request packet from wireless communication of an air quality sensing and monitoring sensor instrument, calculates and processes data through a model, packages a calculation and processing result into a data return packet, returns the data return packet to the liquid crystal display module to push warning information, and reminds a user of timely making a protective measure; the cloud server receives a data request packet of an air quality perception monitoring sensor instrument transmitted by the wireless communication module, real-time data of air quality is compared with standard air quality data in the cloud server, an analysis result is packaged into an air quality data response packet, the air quality perception monitoring sensor instrument can send an air quality data statistics request packet to the cloud server, the air quality perception monitoring sensor instrument needs to automatically send monitoring data to the cloud server once after a time period w, an initial default value of the time period w is stored in the MCU, and a user can perform custom modification.
Preferably, the air quality data statistics request packet specifically comprises a packet header 1, a serial number 2, a state information code 3, a terminal identification code 4, an air quality code number 5, an air quality code number 6, a detector position code 7, a data transmission time code 8 and a packet tail 9; the system comprises a packet header 1, a serial number 2, a state information code 3, a terminal identification code 4, an air quality code number 5, an air quality code number 6, a detector position code 7, a data sending time code 8 and a packet tail 9, wherein the packet header 1 is used for indicating the beginning of a data packet, the serial number 2 is used for counting monitoring data packets, the state information code 3 is used for indicating the function of the data packet, the terminal identification code 4 is generated by a cloud server, the air quality code number 5 and the air quality code number 6 are respectively used for indicating the number of monitoring types and corresponding monitoring type numbers, the detector position code 7 is used for indicating the position information of a detector, the data sending time code 8 is used for indicating the data sending time of the current monitor, and the packet tail 9 is used for indicating the end of the data packet.
Preferably, the air quality data response packet specifically comprises a packet header 1, a serial number 2, a status information code 3, a terminal identification code 4, a corresponding response name 13 of an air type, whether an alarm scheme 14 is provided for different air types, normal data 15, whether the air quality data response packet is successful 16, and a packet tail 9; the corresponding response name 13 of the air type is obtained by the cloud server according to specific monitoring data sent by the terminal, the alarm or not scheme 14 of different air types is a result obtained by matching and comparing the terminal according to a health range, the normal data 15 is used for indicating that the cloud terminal is according to the compared health range, and the success or failure 16 is used for indicating that the terminal is successful in sending a data packet.
Preferably, the MCU adopts an Italian semiconductor STM 32F103VCT6 chip, the temperature and humidity sensor adopts a ZSO3 sensor, and the CO adopts a CO sensor 2 The concentration sensor adopts an MH-Z19B sensor, and the VOCs sensor adopts a ZP-16 sensor.
Preferably, the working processes of air quality information acquisition, communication and alarm are as follows:
s1, detecting the concentration of different air components in the current environment by using a plurality of groups of sensor modules, and obtaining the serial numbers of different sensor monitoring instruments through mac addresses as the detection numbers of the different instruments;
s2, a time interval period t for detecting air quality is set on an MCU of the air quality sensing and monitoring sensor instrument, the wireless communication module sends an instruction to the air detector through a UART serial port in the same line, the air detector returns currently detected air quality data after receiving the instruction and returns the currently detected air quality data to the wireless communication module in a hexadecimal format, and data are transmitted to a cloud server through the wireless communication module every time t;
and S3, the cloud server receives the data sent by the terminal and starts to analyze and process the data. Comparing the detected current quality with a safe gas quality range, if the data is not correct or the air quality lasting for a period of time is not in the safe range, collecting and processing the data which is not in the safe range by the rear end in time, and returning the data to the liquid crystal display module;
and S4, receiving the display data and the alarm data of the cloud server through the wireless communication module, decoding the display data and the alarm data, displaying the decoded result through the liquid crystal display module, and giving an alarm prompt in time if alarm information exists.
Preferably, in S1, the specific steps include:
firstly, cleaning an instrument probe of an air quality perception monitoring sensor instrument in a well-ventilated outdoor environment;
step two, pressing a zero setting key after 20 minutes to carry out zero setting;
thirdly, placing the adjusted instrument at an indoor position to be monitored;
fourthly, opening the air quality sensing and monitoring sensor instrument to wait for a period of time, and enabling the multiple groups of sensor modules to start working;
and fifthly, the air quality perception monitoring sensor instrument displays the monitored information on an instrument display screen at intervals.
Preferably, in S2, the specific steps include:
step one, data transmission is started;
secondly, connecting the wireless communication module with WiFi;
thirdly, reading a predicted time period t from the MCU;
fourthly, sending a command 55 CD 47 00 00 00 00 00 00 00 00 00 01 69D 0A to the air quality perception monitoring sensor instrument through a UART serial port in the same row, returning to 40 in normal confirmation, returning to 40 in error, and returning to 30 in error, wherein AA 00 00 FF 00 \ 8230, and 10A in nx00 CheckSum CheckSum 0D;
fifthly, calculating the running time difference between the current time and the last time, judging whether the time difference is larger than a period t, if so, sending the detected data to a rear end, and sending the detected data to a cloud server by a wireless transmission module in a common transmission mode and recording the time; if not, executing the sixth step;
sixthly, judging whether the user closes the air detection transmission interruption or not, and if the user closes the air detection transmission interruption, finishing data transmission; if not, executing the fourth step;
and step seven, finishing data transmission.
Preferably, in S3, the specific steps include:
firstly, starting analysis processing of data;
secondly, the cloud server receives a data packet sent by an air quality perception monitoring sensor instrument terminal;
thirdly, processing the received data and comparing the data with a safety range, if the data is in the safety range, giving no prompt, and if the data is not in the safety range, giving an alarm and a text prompt on a background display screen through a liquid crystal display module;
and fourthly, finishing data processing.
Compared with the prior art, the invention has the beneficial effects that:
1. the system can detect and display various real-time data of temperature, humidity, formaldehyde and PM2.5 by arranging an air quality sensing and monitoring sensor instrument, a cloud server, a liquid crystal display module, a wireless communication module and a data acquisition module, and mainly comprises a sensor temperature and humidity acquisition part, a sensor gas acquisition part, an A/D (analog/digital) conversion part, an LCD (liquid crystal display) part, an audible and visual alarm part and the like by taking an ESP (electronic stability program) 32 single chip microcomputer as a communication core.
Drawings
FIG. 1 is a schematic diagram of the structure of the air quality sensing, monitoring and early warning system according to the present invention;
fig. 2 is a working flow chart of the vehicle-mounted terminal of the air quality perception monitoring and early warning system of the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-2, the present invention provides a technical solution: the air quality perception monitoring and early warning system comprises an air quality perception monitoring sensor instrument, a cloud server and a liquid crystal display module, wherein the air quality perception monitoring sensor instrument is installed in an indoor scene and comprises a plurality of groups of sensor modules, an MCU (microprogrammed control unit) and a wireless communication module, and the plurality of groups of sensor modules comprise a CO 2 The system comprises a concentration sensor, a PM2.5 sensor, a PM10 sensor, a formaldehyde sensor, a VOCs sensor, a temperature and humidity sensor and a particulate matter sensor, wherein the output ends of a plurality of groups of sensor modules are in one-way electric connection with the input end of an MCU (microprogrammed control Unit), the output end of the MCU is in interactive electric connection with a data acquisition module, the output end of the data acquisition module is in interactive electric connection with the input end of a wireless communication module, the output end of the wireless communication module is in one-way electric connection with the input end of a liquid crystal display module, and the output end of the wireless communication module is in interactive electric connection with the input end of a cloud server; the cloud server is used for receiving and processing air quality data information monitored by the air quality perception monitoring sensor instrument, packaging related information into an operation state data request packet, receiving the operation state data request packet from the wireless communication module by the terminal, and storing and analyzing an operation state data response packet and a data receiving return packet returned by the terminal; the wireless communication module has a high-speed transmission mode and a common transmission mode at the same time; the cloud server acquires a data request packet from the air quality perception monitoring sensor instrument in wireless communication, calculates and processes data through a model, packages a calculation processing result into a data return packet, returns the data return packet to the liquid crystal display module to push warning information, and reminds a user of making a protective measure in time; the cloud server receives a data request packet transmitted by the wireless communication module and used for the air quality real-time data and the standard air quality data in the cloud serverThe system mainly comprises a sensor temperature and humidity acquisition part, a sensor gas acquisition part, an analog/digital (A/D) conversion part, an LCD (liquid crystal display), an acousto-optic alarm part and the like, and is characterized in that the acquired data is compared with a setting value set inside the cloud server, when the data does not meet the standard, a protection measure is taken in time, the personal health is recorded, the data within a certain time is displayed, the whole system is highly safe and has no hidden danger, and the like.
Example 2
Referring to fig. 1-2, the present invention provides a technical solution: the air quality perception monitoring and early warning system comprises an air quality perception monitoring sensor instrument, a cloud server and a liquid crystal display module, wherein the air quality perception monitoring sensor instrument is installed in an indoor scene and comprises a plurality of groups of sensor modules, an MCU (microprogrammed control unit) and a wireless communication module, and the plurality of groups of sensor modules comprise a CO 2 The sensor comprises a concentration sensor, a PM2.5 sensor, a PM10 sensor, a formaldehyde sensor, a VOCs sensor, a temperature and humidity sensor and a particulate matter sensor, wherein the MCU adopts an Italian semiconductor STM 32F103VCT6 chip, the temperature and humidity sensor adopts a ZSO3 sensor and a CO sensor 2 The concentration sensor adopts an MH-Z19B sensor, the VOCs sensor adopts a ZP-16 sensor, the output ends of a plurality of groups of sensor modules are electrically connected with the input end of the MCU in a one-way manner, and the output end of the MCU is electrically connected with a data acquisition module in an interactive mannerThe output end of the data acquisition module is interactively and electrically connected with the input end of the wireless communication module, the output end of the wireless communication module is unidirectionally and electrically connected with the input end of the liquid crystal display module, and the output end of the wireless communication module is interactively and electrically connected with the input end of the cloud server; the cloud server is used for receiving and processing air quality data information monitored by the air quality sensing and monitoring sensor instrument, packaging related information into an operation state data request packet, receiving the operation state data request packet from the wireless communication module by the terminal, and storing and analyzing an operation state data response packet and a data receiving return packet returned by the terminal; the wireless communication module has a high-speed transmission mode and a common transmission mode at the same time; the cloud server acquires a data request packet from the air quality sensing and monitoring sensor instrument in wireless communication, calculates and processes the data through a model, is convenient for intelligently analyzing potential dangers existing in the air quality, namely timely adjustment required to be made, packages a calculation processing result into a data return packet, returns the data return packet to the liquid crystal display module to push warning information, and reminds a user of timely making protective measures; the cloud server receives a data request packet transmitted by the wireless communication module and used for comparing real-time air quality data with standard air quality data in the cloud server, and encapsulates an analysis result into an air quality data response packet, so that reminding and character alarm can be conveniently carried out on gas which is not in a safety range on a front-end visual interface; air quality perception monitoring sensor instrument can send air quality data statistics to the high in the clouds server and ask for the package, air quality perception monitoring sensor instrument needs to pass time period w and sends once monitoring data to the high in the clouds server automatically, and the initial default of time period w is stored in MCU, and the user can self-defined modification, be convenient for the high in the clouds server to obtain current air quality through these data contrast, return the result to the user, through setting up air quality perception monitoring sensor instrument, the high in the clouds server, the liquid crystal display module, wireless communication module and data acquisition module, can detect and demonstrate the temperature, humidity, formaldehyde, PM2.5 each item real-time data, this system uses ESP32 singlechip as the high in the performance liquid crystal display (ESP) singlechipThe communication core mainly comprises a sensor temperature and humidity acquisition part, a sensor gas acquisition part, an analog/digital (A/D) conversion part, an LCD liquid crystal display part, an audible and visual alarm part and the like, the system acquires indoor temperature and humidity, formaldehyde content and PM2.5 content through a built sensor element and displays the acquired data in real time, in addition, the acquired data are compared with a setting value set inside a cloud server, an alarm prompt is sent when the data are not in a standard, measures are taken in time to protect personal health, and data within a certain time are recorded for visual presentation, so that the whole system has the characteristics of accurate monitoring data, quick response, no potential safety hazard, strong practicability and the like.
The air quality data statistics request packet specifically comprises a packet header 1, a serial number 2, a state information code 3, a terminal identity identification code 4, an air quality code number 5, an air quality code number 6, a detector position code 7, a data sending time code 8 and a packet tail 9; the packet header 1 is used for indicating the beginning of a data packet, different types of data packets have different packet headers so as to distinguish the data packets, the serial number 2 is used for counting monitoring data packets, the state information code 3 is used for indicating the function of the data packet, different types of data packets have different state information codes, the terminal identification code 4 is generated by a cloud server and used for identifying the terminal identity, the air quality code number 5 and the air quality code number 6 are respectively used for indicating the number of monitoring types and the corresponding monitoring type numbers thereof, the detector position code 7 is used for indicating the position information of a detector, the data sending time code 8 is used for indicating the data sending time of the current monitor, and the packet tail 9 is used for indicating the end of the data packet.
The air quality data response packet is composed of a packet header 1, a serial number 2, a state information code 3, a terminal identification code 4, a corresponding response name 13 of an air type, a scheme 14 of whether the air type is an alarm or not, normal data 15, whether the air type is a success or not 16 and a packet tail 9; the corresponding response name 13 of the air type is obtained by the cloud server according to specific monitoring data sent by the terminal, the alarm or not scheme 14 of different air types is the result obtained by matching and comparing the terminal according to the health range, and the normal data 15 is used for indicating whether the cloud terminal successfully sends a data packet or not according to the compared health range and the normal data 16 is used for indicating whether the terminal successfully sends the data packet or not.
Wherein, the head and the tail of the packet are composed of special key characters and are used for distinguishing data packets; the serial number occupies two bytes, is increased from zero, returns to zero after being accumulated to the maximum value of 0xFFFF, and is used for counting the data packets; the terminal identity identification code is generated by the cloud server and is used for identifying the terminal identity; the number of the air quality codes and the number of the air quality codes are respectively used for representing the number of the monitored air type codes and the corresponding type numbers, and the numbers are divided when a plurality of fault codes exist; the detector position code is used for representing the current geographic position of the detector; the successful data segment can be used to determine whether the diagnostic transmission was successful, where 00 indicates failure and 01 indicates success.
Table 1 acceptance of data response packets
The terminal management platform and the air detector main control chip are organically combined through the wireless communication module to achieve receiving and returning of data, the cloud server receives code information monitored by the air detector sensor module, stores the code information to the cloud and conducts analysis processing, and sends a response data packet to the air detector main control chip, after the cloud receives the monitoring data packet, the cloud processes and analyzes the data and sends a corresponding response data packet to the terminal, and as shown in the following table 2, the terminal management platform is composed of a packet head, a stream number, a state information code, a terminal identification code, a concentration value of PM2.5, a concentration value of PM10, a formaldehyde concentration, a VOCs concentration, a CO concentration, a concentration value of PM10, a formaldehyde concentration and a CO concentration 2 Concentration, humiture, detector battery state, detector battery power, 0.3um particulate matter number, 0.5um particulate matter number, 1um particulate matter number, 2.5um particulate matter number, 5um particulate matter number, 10um particulate matter number, detector position, whether succeed and the package tail constitutes. Specific fault response packages such asTable 2 below shows:
table 2 running status response packet
When data is successfully sent to the server terminal, the terminal sends an operation state data response packet to the detector main control chip, the data packet consists of a packet head, a serial number, a state information code, a terminal identification code, whether the data is successful or not and a packet tail, and the data packet comprises a state message code of corresponding data.
Table 3 run state data response packet
The user can adjust the interval function of data receiving according to the terminal display, the terminal automatically returns data once every 6 minutes in the mode, and the user can know the current monitoring air type, concentration, safety range value, whether the current monitoring air is in the safety range, monitoring time, monitoring place and other data through the function. The cloud end can visually display the data on the front-end display screen, so that a user can know the air quality more intuitively.
Table 4 air composition data statistics request packet
TABLE 5 air composition data statistics response packet
The working processes of air quality information acquisition, communication and alarm are as follows:
s1, detecting the concentration of different air components in the current environment by using a plurality of groups of sensor modules, and obtaining the serial numbers of different sensor monitoring instruments through mac addresses as the detection numbers of the different instruments; the method comprises the following specific steps:
firstly, cleaning an instrument probe of an air quality perception monitoring sensor instrument in a well-ventilated outdoor environment;
step two, pressing a zero setting key after 20 minutes to carry out zero setting;
thirdly, placing the adjusted instrument at an indoor position to be monitored;
fourthly, opening the air quality sensing and monitoring sensor instrument to wait for a period of time, and enabling the multiple groups of sensor modules to start working;
and fifthly, displaying the monitored information on an instrument display screen at intervals by the air quality perception monitoring sensor instrument.
S2, a time interval period t for detecting air quality is set on an MCU of the air quality sensing and monitoring sensor instrument, the wireless communication module sends an instruction to the air detector through a UART serial port in the same line, the air detector returns currently detected air quality data after receiving the instruction and returns the currently detected air quality data to the wireless communication module in a hexadecimal format, and data are transmitted to a cloud server through the wireless communication module every time t; the method comprises the following specific steps:
step one, data transmission is started;
secondly, connecting the wireless communication module with WiFi;
thirdly, reading a predicted time period t from the MCU;
fourthly, sending a command 55 CD 47 00 00 00 00 00 00 00 00 00 01 69D 0A to the air quality perception monitoring sensor instrument through a UART serial port in the same row, returning to 40 in normal confirmation, returning to 40 in error, and returning to 30 in error, wherein AA 00 00 FF 00 \ 8230, and 10A in nx00 CheckSum CheckSum 0D;
fifthly, calculating the running time difference between the current time and the last time, judging whether the time difference is larger than a period t, if so, sending the detected data to a rear end, and sending the detected data to a cloud server by a wireless transmission module in a common transmission mode and recording the time; if not, executing the sixth step;
sixthly, judging whether the user closes the air detection transmission interruption or not, and if the user closes the air detection transmission interruption, finishing data transmission; if not, executing the fourth step;
and step seven, finishing data transmission.
And S3, the cloud server receives the data sent by the terminal and starts to analyze and process the data. Comparing the detected current quality with a safe gas quality range, if the data is not correct or the air quality lasting for a period of time is not in the safe range, collecting and processing the data which is not in the safe range by the rear end in time, and returning the data to the liquid crystal display module; the method comprises the following specific steps:
firstly, starting analysis processing of data;
secondly, the cloud server receives a data packet sent by an air quality perception monitoring sensor instrument terminal;
thirdly, processing the received data and comparing the data with a safety range, if the data is in the safety range, giving no prompt, and if the data is not in the safety range, giving an alarm and a text prompt on a background display screen through a liquid crystal display module;
and fourthly, finishing data processing.
And S4, receiving the display data and the alarm data of the cloud server through the wireless communication module, decoding the display data and the alarm data, displaying the decoded result through the liquid crystal display module, and giving an alarm prompt in time if alarm information exists.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. The utility model provides an air quality perception monitoring and early warning system, is including installing in air quality perception monitoring sensor instrument, high in the clouds server and the liquid crystal display module of indoor scene, its characterized in that: the air quality perception monitoring sensor instrument comprises a plurality of groups of sensor modules, an MCU (microprogrammed control Unit) and a wireless communication module, wherein the plurality of groups of sensor modules comprise CO 2 The system comprises a concentration sensor, a PM2.5 sensor, a PM10 sensor, a formaldehyde sensor, a VOCs sensor, a temperature and humidity sensor and a particulate matter sensor, wherein the output ends of a plurality of groups of sensor modules are in one-way electric connection with the input end of an MCU (microprogrammed control unit), the output end of the MCU is in interactive electric connection with a data acquisition module, the output end of the data acquisition module is in interactive electric connection with the input end of a wireless communication module, the output end of the wireless communication module is in one-way electric connection with the input end of a liquid crystal display module, and the output end of the wireless communication module is in interactive electric connection with the input end of a cloud server;
the cloud server is used for receiving and processing air quality data information monitored by the air quality perception monitoring sensor instrument, packaging related information into an operation state data request packet, receiving the operation state data request packet from the wireless communication module by the terminal, and storing and analyzing an operation state data response packet and a data receiving return packet returned by the terminal;
the wireless communication module is provided with a high-speed transmission mode and a common transmission mode at the same time;
the cloud server acquires a data request packet from the air quality perception monitoring sensor instrument in wireless communication, calculates and processes data through a model, packages a calculation processing result into a data return packet, returns the data return packet to the liquid crystal display module to push warning information, and reminds a user to take protective measures in time;
the cloud server receives a data request packet transmitted by the wireless communication module and used for sensing and monitoring the air quality of the sensor instrument, the real-time data of the air quality is compared with standard air quality data in the cloud server, and an analysis result is packaged into an air quality data response packet;
the air quality perception monitoring sensor instrument can send air quality data statistics request package to the high in the clouds server, the air quality perception monitoring sensor instrument needs to automatically send once monitoring data to the high in the clouds server through time cycle w, and the initial default of time cycle w is stored in MCU, and the user can carry out custom modification.
2. The air quality perception monitoring and early warning system of claim 1, wherein: the air quality data statistics request packet specifically comprises a packet header 1, a serial number 2, a state information code 3, a terminal identity identification code 4, an air quality code number 5, an air quality code number 6, a detector position code 7, a data sending time code 8 and a packet tail 9;
the system comprises a packet header 1, a serial number 2, a state information code 3, a terminal identification code 4, an air quality code number 5, an air quality code number 6, a detector position code 7, a data sending time code 8 and a packet tail 9, wherein the packet header 1 is used for indicating the beginning of a data packet, the serial number 2 is used for counting a monitoring data packet, the state information code 3 is used for indicating the function of the data packet, the terminal identification code 4 is generated by a cloud server, the air quality code number 5 and the air quality code number 6 are respectively used for indicating the number of monitoring types and corresponding monitoring type numbers, the detector position code 7 is used for indicating the position information of a current detector, the data sending time code 8 is used for indicating the data sending time of the current monitor, and the packet tail 9 is used for indicating the end of the data packet.
3. The air quality perception monitoring and early warning system of claim 1, wherein: the air quality data response packet is composed of a packet header 1, a serial number 2, a state information code 3, a terminal identification code 4, a corresponding response name 13 of an air type, a scheme 14 of whether the air type is an alarm or not, normal data 15, whether the air type is a success or not 16 and a packet tail 9;
the corresponding response name 13 of the air type is obtained by the cloud server according to specific monitoring data sent by the terminal, the alarm or not scheme 14 of different air types is a result obtained by matching and comparing the terminal according to a health range, the normal data 15 is used for indicating that the cloud terminal compares the health range, and the success or failure 16 is used for indicating that the terminal successfully sends a data packet.
4. The air quality perception monitoring and early warning system of claim 1, wherein: the MCU adopts an Italian semiconductor STM 32F103VCT6 chip, the temperature and humidity sensor adopts a ZSO3 sensor, and the CO adopts a CO 2 The concentration sensor adopts an MH-Z19B sensor, and the VOCs sensor adopts a ZP-16 sensor.
5. The air quality perception monitoring and early warning system of claim 1, wherein: the working processes of air quality information acquisition, communication and alarm are as follows:
s1, detecting the concentration of different air components in the current environment by using a plurality of groups of sensor modules, and obtaining the serial numbers of different sensor monitoring instruments through mac addresses as the detection numbers of the different instruments;
s2, a time interval period t for detecting air quality is set on an MCU of the air quality sensing and monitoring sensor instrument, the wireless communication module sends an instruction to the air detector through a UART serial port in the same line, the air detector returns currently detected air quality data after receiving the instruction and returns the currently detected air quality data to the wireless communication module in a hexadecimal format, and data are transmitted to a cloud server through the wireless communication module every time t;
and S3, the cloud server receives the data sent by the terminal and starts to analyze and process the data. Comparing the detected current quality with a safe gas quality range, if the data is not correct or the air quality lasting for a period of time is not in the safe range, collecting and processing the data which is not in the safe range by the rear end in time, and returning the data to the liquid crystal display module;
and S4, receiving the display data and the alarm data of the cloud server through the wireless communication module, decoding the display data and the alarm data, displaying the decoded result through the liquid crystal display module, and giving an alarm prompt in time if alarm information exists.
6. The air quality perception monitoring and early warning system of claim 5, wherein: in S1, the specific steps include:
firstly, cleaning an instrument probe of an air quality perception monitoring sensor instrument in a well-ventilated outdoor environment;
step two, pressing a zero setting key after 20 minutes to carry out zero setting;
thirdly, placing the adjusted instrument at an indoor position to be monitored;
fourthly, opening the air quality sensing and monitoring sensor instrument to wait for a period of time, and enabling the multiple groups of sensor modules to start working;
and fifthly, displaying the monitored information on an instrument display screen at intervals by the air quality perception monitoring sensor instrument.
7. The air quality perception monitoring and early warning system of claim 5, wherein: in S2, the specific steps include:
step one, data transmission is started;
secondly, connecting the wireless communication module with WiFi;
thirdly, reading the predicted time period t from the MCU;
fourthly, sending a command 55 CD 47 00 00 00 00 00 00 00 00 00 01 69D 0A to the air quality perception monitoring sensor instrument through a UART serial port in the same row, returning to 40 in normal confirmation, returning to 40 in error, and returning to 30 in error, wherein AA 00 00 FF 00 \ 8230, and 10A in nx00 CheckSum CheckSum 0D;
fifthly, calculating the running time difference between the current time and the last time, judging whether the time difference is greater than a period t, if so, sending the detected data to a rear end, and sending the detected data to a cloud server by a wireless transmission module in a common transmission mode and recording the time; if not, executing the sixth step;
sixthly, judging whether the user closes the air detection transmission interruption or not, and if the user closes the air detection transmission interruption, finishing data transmission; if not, executing the fourth step;
and step seven, finishing data transmission.
8. The air quality perception monitoring and early warning system of claim 5, wherein: in S3, the specific steps include:
firstly, starting analysis processing of data;
secondly, the cloud server receives a data packet sent by an air quality perception monitoring sensor instrument terminal;
thirdly, processing the received data and comparing the data with a safety range, if the data is in the safety range, giving no prompt, and if the data is not in the safety range, giving an alarm and a text prompt on a background display screen through a liquid crystal display module;
and fourthly, finishing data processing.
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