CN111365786B - Control method of monitoring system comprising air purification and sterilization module - Google Patents

Control method of monitoring system comprising air purification and sterilization module Download PDF

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Publication number
CN111365786B
CN111365786B CN202010148795.6A CN202010148795A CN111365786B CN 111365786 B CN111365786 B CN 111365786B CN 202010148795 A CN202010148795 A CN 202010148795A CN 111365786 B CN111365786 B CN 111365786B
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China
Prior art keywords
gear
concentration
module
differential pressure
rotating speed
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CN202010148795.6A
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CN111365786A (en
Inventor
田旭东
贾磊
樊海彬
张秀平
张伟
王雷
袁旭东
范志超
陈学东
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HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO LTD
Hefei General Machinery Research Institute Co Ltd
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HEFEI GENERAL ENVIRONMENT CONTROL TECHNOLOGY CO LTD
Hefei General Machinery Research Institute Co Ltd
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Publication of CN111365786A publication Critical patent/CN111365786A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F3/00—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
    • F24F3/12—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling
    • F24F3/16—Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems characterised by the treatment of the air otherwise than by heating and cooling by purification, e.g. by filtering; by sterilisation; by ozonisation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F24F11/32—Responding to malfunctions or emergencies
    • F24F11/39—Monitoring filter performance
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/52—Indication arrangements, e.g. displays
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/70—Control systems characterised by their outputs; Constructional details thereof
    • F24F11/72—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure
    • F24F11/74—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity
    • F24F11/77—Control systems characterised by their outputs; Constructional details thereof for controlling the supply of treated air, e.g. its pressure for controlling air flow rate or air velocity by controlling the speed of ventilators
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/10—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering
    • F24F8/108—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by separation, e.g. by filtering using dry filter elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
    • F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
    • F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/20—Humidity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/64—Airborne particle content
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/66—Volatile organic compounds [VOC]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/70—Carbon dioxide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/50—Air quality properties
    • F24F2110/65—Concentration of specific substances or contaminants
    • F24F2110/74—Ozone
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2140/00—Control inputs relating to system states
    • F24F2140/10—Pressure
    • F24F2140/12—Heat-exchange fluid pressure
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
    • Y02B30/70—Efficient control or regulation technologies, e.g. for control of refrigerant flow, motor or heating

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Fluid Mechanics (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The system comprises a control module, a first air purification and sterilization module, a first monitoring module and an early warning module, wherein the first air purification and sterilization module, the first monitoring module and the early warning module are respectively connected with corresponding ports of the control module, the first air purification and sterilization module comprises a first cavity and a plurality of pressure difference sensors which are sequentially arranged in an array mode and are used for measuring the front and rear pressure differences of the processing units, pins corresponding to the control module are connected with the pressure difference sensors, the processing units are detachable, and the contact surface of each layer of processing unit and the cavity is sealed. The application has the advantages that: according to the application, the first air purification and sterilization module, the first monitoring module, the control module and the early warning module are arranged to realize automatic purification and sterilization of air. The differential pressure sensor is used for detecting whether the processing unit needs to be replaced or not, so that the filtering effect is guaranteed, and the first driving corresponding to the first fan is prevented from being burnt.

Description

Control method of monitoring system comprising air purification and sterilization module
Technical Field
The application relates to the technical field of air purification and disinfection, in particular to a control method of a monitoring system comprising an air purification and disinfection module.
Background
Along with the improvement of living standard and environmental pollution, the requirements of people on the environment are improved, and the public environment has great influence on some public places, especially some hospitals, because the hospital patients are more, but the patient bodies are weaker, the requirements on the environment are higher, so the monitoring, early warning and improvement on the environment are the technical problems to be solved urgently.
Disclosure of Invention
In order to realize the monitoring, early warning and improvement of the environment, the application provides a control method of a monitoring system comprising an air purification and sterilization module.
In order to achieve the above purpose, the present application adopts the following technical scheme:
the utility model provides a monitored control system including air purification degerming poison module, includes control module and the first air purification degerming poison module, first monitoring module, the early warning module that is connected respectively with control module corresponds the port, first air purification degerming poison module includes first cavity and array arrangement in proper order at first cavity multilayer processing unit, first monitoring module includes differential pressure sensor around a plurality of measurement processing unit, the pin that control module corresponds is connected with differential pressure sensor, processing unit is detachable form, and every layer of processing unit is sealed form with the contact surface of cavity.
Optimally, the processing unit sequentially comprises a primary filter, an electrostatic unit, an active carbon unit, a high-efficiency filter and an ultraviolet unit from the air inlet to the air outlet, the first air purification and sterilization module further comprises a first fan for driving the cavity to flow from the air inlet to the air outlet, and the control module controls the operation of the first fan and the operation of the ultraviolet unit through controlling the first driving.
Preferably, the differential pressure sensor comprises a first differential pressure sensor, a second differential pressure sensor and a third differential pressure sensor, wherein the first differential pressure sensor is used for detecting the differential pressure before and after the primary filter, the second differential pressure sensor is used for detecting the differential pressure before and after the active carbon unit is filtered, and the third differential pressure sensor is used for detecting the differential pressure before and after the high-efficiency filter.
Preferably, the early warning module comprises a processing unit replacement alarm, and further comprises any one or more of a first fan driving idling alarm, an indoor particle high-concentration alarm, an ozone high-concentration alarm, a carbon dioxide high-concentration alarm, a formaldehyde high-concentration alarm and a VOC high-concentration alarm.
Preferably, the first monitoring module further comprises any one or more of an air pollutant sensor, a particulate matter concentration sensor, an infrared sensor and a temperature and humidity sensor, and the sensor installed on the first monitoring module is arranged corresponding to the alarm in the early warning module.
Preferably, the particulate matter concentration sensor is configured to detect the mass concentration of particles having an aerodynamic equivalent diameter of 0.3 μm to 10 μm when the particulate matter concentration sensor is provided.
Preferably, the first air purification and sterilization module further comprises a humidifier.
Preferably, when the pollutant sensor is provided, the air pollutant sensor comprises a formaldehyde concentration detection part, a carbon dioxide concentration detection part, an ozone detection part and a VOC detection part.
The control method of the monitoring system comprising the air purification and sterilization module is adopted, wherein the first air purification and sterilization module comprises a first fan, and the first monitoring module comprises an air pollutant sensor, a particulate matter concentration sensor and an infrared sensor; the air pollutant sensor comprises a formaldehyde concentration detection part, a carbon dioxide concentration detection part, an ozone detection part and a VOC detection part;
the first fan control logic automatically determines the rotation speed of the first fan under the following conditions:
the system is preset to be in a fourth gear according to the concentration of the particulate matters, the setting values of the fourth gear are sequentially increased, the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotating speed gear of the first fan caused by the fact that the concentration of the actual particulate matters oscillates back and forth between two gears, a return difference function is introduced into program logic, the rotating speed gear is switched when the concentration value of the particulate matters breaks through a gear switching value, if the concentration value of the particulate matters is returned to the concentration range before the original switching after that, the rotating speed is not switched temporarily, and if the absolute value of the return change is larger than a set return difference value, the original gear is switched again, otherwise, the rotating speed is not switched;
the system is preset to be in a fourth gear according to the formaldehyde concentration, the setting values of the fourth gear are sequentially increased, the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the first fan rotating speed gear caused by the fact that the actual formaldehyde concentration oscillates back and forth between two gears, a return difference function is introduced into program logic, when the program detects that the formaldehyde concentration value breaks through a gear switching value, the rotating speed gear is switched, if the formaldehyde concentration value is returned to the original concentration range before switching, the rotating speed is not switched temporarily, and when the absolute value of the return change is larger than a set return difference value, the original gear is switched, otherwise, the rotating speed is not switched;
the system is preset into four gears according to the VOC concentration, the four gear set values are sequentially increased, the super-static rotation speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the first fan rotating speed gear caused by the fact that the actual VOC concentration oscillates back and forth between two gears, a return difference function is introduced into program logic, when the program detects that the VOC concentration value breaks through a gear switching value, the rotating speed gear is switched, if the VOC concentration value is returned to the original concentration range before switching, the rotating speed is not switched temporarily, and when the absolute value of the return change is larger than the set return difference value, the original gear is switched, otherwise, the rotating speed is not switched;
if the three conditions act simultaneously, when the conditions that the rotation speed gears determined by different conditions are inconsistent or even have large difference, the system comprehensively judges the three conditions, and takes the highest rotation speed gear determined by each condition as the final operation rotation speed gear of the first fan.
Preferably, the first air purifying and sterilizing module further comprises an ultraviolet unit, wherein the control logic of the ultraviolet lamp in the ultraviolet unit controls the on and off of the ultraviolet lamp, and the control logic is determined by the following conditions:
setting 1:00-2:00 of the ultraviolet lamp to be automatically started every day, wherein when the infrared sensor detects that a person is indoors, the program automatically limits the starting of the ultraviolet lamp of the ultraviolet unit;
when the system automatically starts the ultraviolet lamp for sterilization, if the ozone concentration in the environment is detected to exceed the upper limit value specified by the standard, the program automatically stops the operation of the ultraviolet lamp.
The application has the advantages that:
(1) According to the application, the first air purification and sterilization module, the first monitoring module, the control module and the early warning module are arranged to realize automatic purification of air. The differential pressure sensor is used for detecting whether the processing unit needs to be replaced or not, so that the filtering effect is guaranteed, and the first driving corresponding to the first fan is prevented from being burnt.
(2) The layer-by-layer arrangement of the processing unit and the arrangement of the ultraviolet unit can ensure the quality of the gas entering the room. The first fan and the first drive gas to enter the room after being processed in the cavity under the control of the control module.
(3) The three differential pressure sensors are used for detecting the states of the corresponding processing units, and whether the corresponding processing units need to be replaced or not is prompted through corresponding alarms.
(4) The air pollutant sensor comprises a formaldehyde concentration detection part, an ozone sensor, a carbon dioxide concentration detection part and a VOC detection part and is used for measuring the concentration of the air pollutant; the particle concentration sensor is used for testing the mass concentration of particles with the aerodynamic equivalent diameter of 0.3-10 mu m, and can simultaneously measure the mass concentrations of PM0.3, PM1.0, PM2.5 and PM 10; the infrared sensor is used for detecting whether personnel exist in the room or not; the temperature and humidity sensor is used for measuring air temperature and humidity parameters; the differential pressure sensor is used for measuring the front-back air pressure difference of the primary filter of the air purification and sterilization toxin removing machine, the front-back air pressure difference of the active carbon unit and the front-back air pressure difference of the high-efficiency filter.
(5) The humidifier is provided for adjusting the humidity of the air delivered into the room.
(6) The present method optimizes the air entering the room.
Drawings
Fig. 1-2 are schematic structural views of the present application.
The meaning of the reference symbols in the figures is as follows:
1-control module
2-first air purification and detoxification Module 20-second air purification and detoxification Module
21-Primary Filter 22-Electrostatic Unit
23-active carbon unit 24-high-efficiency filter 25-ultraviolet unit 26-first fan
3-first monitoring Module 30-second monitoring Module
311-first differential pressure sensor 312-second differential pressure sensor 313-third differential pressure sensor
32-air pollutant sensor 33-infrared sensor 34-temperature and humidity sensor
35-particulate matter concentration sensor
4-early warning module
Detailed Description
As shown in fig. 1, a monitoring system comprising an air purification and sterilization module comprises a control module 1, a first air purification and sterilization module 2, a first monitoring module 3 and an early warning module 4, wherein the first air purification and sterilization module 2, the first monitoring module 3 and the early warning module 4 are respectively connected with corresponding ports of the control module 1.
The first air purification and sterilization module 2 is used for killing bacteria and viruses in the internal air, filtering air pollutants in the air flow and reducing concentration values of various harmful substances. The first monitoring module 3 is used for measuring the concentration value of indoor air pollutants and various parameters, and feeding back the measured parameters to the control module 1 and the early warning module 4.
The first air purification and sterilization module 2 comprises a first cavity and a plurality of pressure difference sensors which are sequentially arranged on the first cavity in an array mode, the first monitoring module 3 comprises a plurality of pressure difference sensors which measure the pressure difference between the front and back of the processing units, pins corresponding to the control module 1 are connected with the pressure difference sensors, the processing units are detachable, and the contact surface of each layer of processing unit and the cavity is sealed. In this embodiment, the contact surface of the processing unit and the cavity is a saw tooth engagement, and the saw tooth surface is further provided with an elastic seal. The differential pressure sensor arrangement may be used to determine whether the corresponding unit needs replacement or cleaning. The first air cleaning and sterilizing module 2 further includes a humidifier.
As shown in fig. 2, the processing unit sequentially comprises a primary filter 21, an electrostatic unit 22, an activated carbon unit 23 and a high-efficiency filter 24 from the air inlet to the air outlet, and an ultraviolet unit 25 is also arranged in the cavity. The first air purifying and sterilizing module 2 further comprises a first fan 26 for driving the cavity to flow from the air inlet to the air outlet, and the control module 1 controls the first fan 26 to operate and controls the ultraviolet unit 25 to operate by controlling the first driving. The control module 1 combines control logic according to the concentration values of harmful substances such as indoor air pollutants collected by the first monitoring module 3, and adjusts working states of the static unit 22, the ultraviolet unit 25 and the first fan 26 so as to realize indoor air purification; the early warning module 4 realizes an early warning protection function according to all the parameters of the indoor air collected by the first monitoring module 3 so as to ensure that the system can run safely and efficiently and facilitate the subsequent use and maintenance of the system.
The differential pressure sensor comprises a first differential pressure sensor 311, a second differential pressure sensor 312 and a third differential pressure sensor 313, wherein the first differential pressure sensor 311 is used for detecting the differential pressure before and after the primary filter 21, the second differential pressure sensor 312 is used for detecting the differential pressure before and after the filtration of the activated carbon unit 23, and the third differential pressure sensor 313 is used for detecting the differential pressure before and after the efficient filter 24.
The first monitoring module 3 further comprises any one or more of an air pollutant sensor 32, a particulate matter concentration sensor 35, an infrared sensor 33 and a temperature and humidity sensor 34, and the sensor installed on the first monitoring module 3 is arranged corresponding to the alarm in the early warning module 4. In this embodiment, the first monitoring module 3 comprises all sensors. Specifically, the air contaminant sensor 32 includes a formaldehyde concentration detection unit, a carbon dioxide concentration detection unit, an ozone detection unit, and a VOC detection unit. The particulate matter concentration sensor 35 is used to detect the mass concentration of particles having an aerodynamic equivalent diameter of 0.3 μm to 10 μm.
The early warning module 4 comprises a processing unit replacement alarm and further comprises any one or more of an idling alarm driven by the first fan 26, an indoor particle high-concentration alarm, an ozone high-concentration alarm, a carbon dioxide high-concentration alarm, a formaldehyde high-concentration alarm and a VOC high-concentration alarm. In the embodiment, all the alarms comprise that all the sensors enter an industrial personal computer through a serial port server in an RS485 communication mode, and the measurement and control software of the industrial personal computer collects, stores and analyzes the data, and displays the processed data in real time.
The control module 1 comprises an industrial personal computer, a touch screen and a serial port server, wherein the industrial personal computer is used for storing data acquired by the first monitoring module 3, starting and adjusting corresponding equipment according to control logic and acquired data, and further controlling the first fan 26 according to fan control logic, controlling the ultraviolet unit 25 according to ultraviolet lamp control logic and controlling the electrostatic unit 22 according to electrostatic unit 22 control logic; the touch screen is used for setting, collecting, displaying and other operations of parameters; the serial port server is used for inputting the data acquired by the first monitoring module 3 into the industrial personal computer in an RS485 communication mode, and inputting control signals of the industrial personal computer into the electrostatic unit 22, the ultraviolet unit 25 and the first fan 26.
The control method of the monitoring system comprises the following steps:
the first fan 26 control logic automatically determines the rotational speed of the first fan 26 by:
the system is preset into four gears according to the concentration of the particulate matters, the four gears are sequentially increased in set value (set value is set through an operation screen), the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear. In order to avoid frequent switching of the rotational speed gear of the first fan 26 caused by the fact that the actual concentration of the particulate matters oscillates back and forth between two gears, a return difference function is introduced in program logic, a specific value of the return difference is set in an operation screen, the rotational speed gear is switched when the concentration value of the particulate matters breaks through a gear switching value, the rotational speed is not switched temporarily after the concentration value of the particulate matters returns to the original concentration range before switching after that, the rotational speed is not switched again after the absolute value of the return change is larger than the set return difference value, and otherwise the rotational speed is not switched.
The system is preset into four gears according to the formaldehyde concentration, the four gears are sequentially increased in set value (set value is set through an operation screen), the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotational speed gear of the first fan 26 caused by the fact that the actual formaldehyde concentration oscillates back and forth between two gears, a return difference function is introduced into program logic, a specific value of the return difference can be set in an operation screen, the rotational speed gear is switched when the program detects that the formaldehyde concentration value breaks through a gear switching value, the rotational speed is not switched temporarily after the formaldehyde concentration value returns to the original concentration range before switching after that, the original gear is switched after the absolute value of the return change is larger than the set return difference value, and otherwise the rotational speed is not switched.
The system is preset into four gears according to the VOC concentration, the four gear set values (set values are set through an operation screen) are sequentially increased, the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotational speed gear of the first fan 26 caused by the fact that the actual VOC concentration oscillates back and forth between two gears, a return difference function is introduced in program logic, a specific value of the return difference can be set in an operation screen, the rotational speed gear is switched when the program detects that the VOC concentration value breaks through the gear switching value, the rotational speed is not switched temporarily after the VOC concentration value returns to the original concentration range before switching after the VOC concentration value is switched, the original gear is switched after the absolute value of the return change is larger than the set return difference value, and otherwise the rotational speed is not switched.
If the above three conditions act simultaneously, the situation that the rotation speed gears determined by different conditions are inconsistent or even have great difference may occur, and in order to avoid the occurrence of the above situations, the system comprehensively determines the above three conditions, and takes the highest one of the rotation speed gears determined by each condition as the final operation rotation speed gear of the first fan 26.
Further, the control logic of the ultraviolet lamp controls the ultraviolet lamp to be turned on and off, and the control logic is determined by the following conditions:
setting 1:00-2:00 to be automatically turned on every day, but when the infrared sensor 33 detects that a person is indoors, the program automatically limits the turning on of the ultraviolet lamp of the ultraviolet unit 25;
when the system automatically starts the ultraviolet lamp for sterilization, if the ozone concentration in the environment is detected to exceed the upper limit value specified by the standard, the program automatically stops the operation of the ultraviolet lamp at the time so as to ensure the cleanliness of the environment quality and the safety of subsequent personnel possibly entering the environment;
further, the control logic of the electrostatic unit 22 controls the on/off of the electrostatic unit 22, which is determined by the following conditions:
when the first fan 26 is started, the electrostatic unit 22 is started; when the system automatically starts the ultraviolet lamp sterilization, if the ozone concentration in the environment is detected to exceed the upper limit value specified by the standard, the program automatically stops the operation of the electrostatic unit 22 at the moment so as to ensure the cleanliness of the environment quality and the safety of personnel possibly entering the environment.
The system can automatically perform acousto-optic early warning when any parameter is higher than the early warning value. The early warning module 4 ensures that the system can run safely and efficiently and provides reference for subsequent use and maintenance.
Further, the idle running warning function includes: the system can collect the ambient temperature in real time, and the temperature between the environments is basically below 35 ℃ and not higher than 43 ℃ because the system is used in indoor environments. In order to prevent forgetting to turn off the system after the system is turned on in a long-false state, the first fan 26 is turned on for a long time to gradually increase the ambient temperature, so that the 43 ℃ is set as a protection value, and if the system records that the system is continuously operated for more than 2 hours and is at least 43 ℃, the system can be automatically stopped to prevent the continuous temperature increase.
Further, the particle high concentration early warning implementation mode is as follows: the system automatically detects the particle concentration of 0.3 mu m,1 mu m,2.5 mu m and 10 mu m, different alarm values are set according to various particle concentrations, and the system sends out early warning reminding when any particle concentration exceeds the corresponding set value.
Further, the implementation mode of the ozone high concentration alarm is as follows: the ozone sensor of the system automatically detects the indoor ozone concentration, and if the indoor ozone concentration exceeds a set value, the system automatically gives out early warning.
Further, the implementation mode of the high-concentration carbon dioxide alarm is as follows: the system monitors the indoor carbon dioxide concentration in real time, and when the concentration exceeds an alarm set value, the system gives an early warning.
Further, the formaldehyde high concentration reminding implementation mode is as follows: the system monitors the indoor formaldehyde concentration in real time, and when the formaldehyde concentration exceeds a set value, the system automatically gives out early warning.
Further, the VOC high concentration alert embodiment is: the system monitors the indoor VOC concentration in real time, and when the VOC concentration exceeds a set value, the system automatically sends out early warning.
Further, each processing unit replacement reminding implementation mode is as follows: when the differential pressure sensor corresponding to the processing unit exceeds a set value, the differential pressure sensor represents that the primary filter 21 is dirty and blocked, and the system automatically sends out early warning to remind the replacement of the primary filter 21.
Optimally, the air inlet is provided with an air return pipeline outlet and a fresh air pipeline outlet, the system further comprises a second fan and a second drive for driving the second fan to move, the system further comprises a second air purification and sterilization module 20 and a second monitoring module 30 which are arranged at the air outlet, and the second air purification and sterilization module 20 and the second monitoring module 30 are identical in structure. The second air purifying and sterilizing module 20, the second monitoring module 30 and the second driver realize data transmission and control through the Bluetooth module and the control module 1. The air inlet and the air outlet are oppositely arranged on different wall surfaces. The arrangement of the fresh air port, the return air port and the air outlet and the arrangement of the second air purifying and sterilizing module 20 and the second monitoring module 30 at the air outlet enable the indoor air to be safely replaced with the outside air. The air inlet and the air outlet are arranged at positions which can ensure that the indoor air is optimized thoroughly. The control module 1 monitors the second air purifying and sterilizing module 20 and the second monitoring module 30, wherein the second air purifying and sterilizing module 20 and the second monitoring module 30 are the same as the first air purifying and sterilizing module and the first monitoring module in the control module 1 and the early warning module 4, and are not described herein. The operation mode of the control module controlling the second air purifying and sterilizing module 20 and the second monitoring module 30 can be controlled according to the set value, and the application does not protect the same.
The above embodiments are merely preferred embodiments of the present application and are not intended to limit the present application, and any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of the present application.

Claims (2)

1. The control method of the monitoring system comprising the air purification and sterilization module is characterized in that the monitoring system comprises a control module (1) and a first air purification and sterilization module (2), a first monitoring module (3) and an early warning module (4) which are respectively connected with corresponding ports of the control module (1), the first air purification and sterilization module (2) comprises a first cavity and a plurality of differential pressure sensors which are sequentially arranged in an array manner in the first cavity, the first monitoring module (3) comprises a plurality of differential pressure sensors which measure the front and rear of the processing units, pins corresponding to the control module (1) are connected with the differential pressure sensors, the processing units are detachable, and the contact surface of each layer of processing unit and the cavity is sealed;
the processing unit sequentially comprises a primary filter (21), an electrostatic unit (22), an active carbon unit (23) and a high-efficiency filter (24) from an air inlet to an air outlet, an ultraviolet unit (25) is arranged in the cavity, the first air purification and sterilization module (2) further comprises a first fan (26) for driving the cavity to flow from the air inlet to the air outlet, and the control module (1) controls the first fan (26) to operate and controls the ultraviolet unit (25) to work by controlling the first driving;
the differential pressure sensor comprises a first differential pressure sensor (311), a second differential pressure sensor (312) and a third differential pressure sensor (313), wherein the first differential pressure sensor (311) is used for detecting the differential pressure before and after the primary filter (21), the second differential pressure sensor (312) is used for detecting the differential pressure before and after the filtration of the activated carbon unit (23), and the third differential pressure sensor (313) is used for detecting the differential pressure before and after the high-efficiency filter (24);
the early warning module (4) comprises a processing unit replacement alarm, and further comprises a first fan (26) driving idling alarm, an indoor particle high-concentration alarm, an ozone high-concentration alarm, a carbon dioxide high-concentration alarm, a formaldehyde high-concentration alarm and a VOC high-concentration alarm;
the first monitoring module (3) further comprises an air pollutant sensor (32), a particulate matter concentration sensor (35), an infrared sensor (33) and a temperature and humidity sensor (34), and the sensor arranged on the first monitoring module (3) is arranged corresponding to the alarm in the early warning module (4);
when a particulate matter concentration sensor (35) is provided, the particulate matter concentration sensor (35) is used for detecting the mass concentration of particles with the aerodynamic equivalent diameter of 0.3-10 mu m;
when a contaminant sensor is provided, the air contaminant sensor (32) includes a formaldehyde concentration detection section, a carbon dioxide concentration detection section, an ozone detection section, a VOC detection section;
the first air purification and sterilization module (2) also comprises a humidifier;
the control method comprises the following steps:
the control logic of the first fan (26) automatically judges the rotating speed of the first fan (26) according to the following conditions:
the system is preset to be in a fourth gear according to the concentration of the particulate matters, the setting values of the fourth gear are sequentially increased, the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotating speed gear of the first fan (26) caused by the fact that the actual concentration of the particulate matters oscillates back and forth between two gears, a return difference function is introduced into program logic, the rotating speed gear is switched when the concentration value of the particulate matters is detected to break through the switching value of the gears, the rotating speed is not switched temporarily after the concentration value of the particulate matters returns to the original concentration range before switching after that, the original gear is switched after the absolute value of the return change is larger than the set return difference value, and otherwise, the rotating speed is not switched;
the system is preset to be in a fourth gear according to the formaldehyde concentration, the setting values of the fourth gear are sequentially increased, the super-static rotating speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotating speed gear of the first fan (26) caused by the fact that the actual formaldehyde concentration oscillates back and forth between two gears, a return difference function is introduced into program logic, when the program detects that the formaldehyde concentration value breaks through a gear switching value, the rotating speed gear is switched, if the formaldehyde concentration value is returned to the original concentration range before switching, the rotating speed is not switched temporarily, and if the absolute value of the return is larger than the set return difference value, the original gear is switched again, otherwise, the rotating speed is not switched;
the system is preset into four gears according to the VOC concentration, the four gear set values are sequentially increased, the super-static rotation speed is used in the first gear, the low speed is used in the second gear, and the medium speed is used in the third gear; high speed is used in fourth gear; in order to avoid frequent switching of the rotating speed gear of the first fan (26) caused by the fact that the actual VOC concentration oscillates back and forth between two gears, a return difference function is introduced into program logic, when the program detects that the VOC concentration value breaks through the gear switching value, the rotating speed gear is switched, if the VOC concentration value is returned to the original concentration range before switching after that, the rotating speed is not switched temporarily, and if the absolute value of the return change is larger than the set return difference value, the original gear is switched again, otherwise, the rotating speed is not switched;
if the three conditions act simultaneously, when the conditions that the rotation speed gears determined by the different conditions are inconsistent or even have large difference, the system comprehensively judges the three conditions, and takes the highest rotation speed gear determined by each condition as the final operation rotation speed gear of the first fan (26).
2. A control method of a monitoring system comprising an air cleaning and sterilizing module according to claim 1, characterized in that the first air cleaning and sterilizing module (2) further comprises an ultraviolet unit (25), the control logic of the ultraviolet lamp in the ultraviolet unit (25) controlling the turning on and off of the ultraviolet lamp, determined by the following conditions:
setting 1:00-2:00 of the ultraviolet lamp to be automatically started every day, wherein when the infrared sensor (33) detects that a person is indoors, the program automatically limits the starting of the ultraviolet lamp of the ultraviolet unit (25);
when the system automatically starts the ultraviolet lamp for sterilization, if the ozone concentration in the environment is detected to exceed the upper limit value specified by the standard, the program automatically stops the operation of the ultraviolet lamp.
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