Indoor air quality monitoring system

Abstract

The utility model discloses an indoor air quality monitoring system, which belongs to the technical field of air quality monitoring and comprises an air quality detector, an air quality display screen and an air quality monitoring host. Environment information can be monitored and displayed in real time through the air quality detector; the air quality display screen can collect and display state information of the air quality detectors and environment information in a current area or a loop in real time, the environment information of all the air quality detectors can be displayed in a user hall in a centralized mode according to user requirements, and the environment information of the floor can also be independently displayed on different floors. And the air quality monitoring host can remotely check the information of all the air quality detectors in real time, so that the inspection personnel can conveniently master the overall environment information, and the time is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of air quality monitoring, in particular to an indoor air quality monitoring system. Background Art

[0002] Indoor environments include offices, hotels, restaurants, shopping malls, wards, nursing homes, kindergartens, teaching buildings, waiting halls (buildings), etc. Indoor air quality greatly affects people's quality of life, health level and production efficiency. On average, more than 80% of a person's time is spent indoors. Therefore, even low-concentration pollutants can have adverse effects on human health after long-term exposure to the human body.

[0003] The air quality monitoring system can obtain environmental information of the monitoring area and link the fresh air equipment to purify the air. However, the existing air quality monitoring system only monitors the air and controls the opening and closing of the air purification equipment according to the results. The display part (structure) of the air quality monitoring system is not eye-catching enough to serve as a reminder to personnel. The system cannot display the air quality in different areas separately and can only display the air quality in the host. Utility Model Content

[0004] The utility model aims at the deficiencies in the prior art and provides an indoor air quality monitoring system.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] An indoor air quality monitoring system comprises an air quality detector, an air quality display screen and an air quality monitoring host;

[0007] The air quality detector is used to detect and display the information value of the environmental information in real time, and compare the information value of the environmental information with a preset threshold value. When the information value of the environmental information exceeds the preset threshold value, the air quality detector sends a first alarm signal to the air quality monitoring host and transmits the air pollution degree data to the air quality display screen. The air pollution degree data is detected by the air quality detector;

[0008] The air quality display screen is used to display the information value of the environmental information detected by each air quality detector in the loop, and transmit the information value of the environmental information to the air quality monitoring host;

[0009] The air quality monitoring host is used to receive environmental information and a first alarm signal sent by an air quality display screen, and is used to centrally display the environmental information and status information of the air quality detectors in each branch circuit. The air quality monitoring host controls the fresh air system for ventilation according to the received first alarm signal, and outputs a second alarm signal.

[0010] Furthermore, the information values ​​of the environmental information include carbon dioxide, PM1.0, PM2.5, PM10, temperature, humidity, formaldehyde, and TVOC.

[0011] Furthermore, the air quality detector includes a single-chip microcomputer, an LCD screen, multiple gas sensors, an infrared receiver, a first communication module and a buzzer; the multiple gas sensors are used to detect the information values ​​of environmental information; the LCD screen is used to display the information values ​​of environmental information; the infrared receiver is used to set the parameters of the air quality detector; the air quality detector is connected to the air quality display screen through the first communication module for data transmission; the LCD screen, multiple gas sensors, infrared receiver, communication module and buzzer are all connected to the single-chip microcomputer.

[0012] Furthermore, the air quality monitoring host includes a human-computer interaction interface, an LED display screen, a second single-chip computer, a wireless module, a second communication module and a switch signal output module; the human-computer interaction interface, the wireless module, the second communication module and the switch signal output module are all connected to the second single-chip computer; the switch signal output module is used to output a passive switch signal to control the start and stop of the fresh air system; the air quality display screen and the air quality monitoring host are connected through the second communication module to realize data transmission.

[0013] Furthermore, the air quality monitoring host also includes an indicator light module, which displays the working status of the entire system.

[0014] Furthermore, the air quality monitoring host also includes a printer, and the printer is connected to the human-computer interaction interface.

[0015] In summary, compared with the prior art, the above technical solution has the following beneficial effects:

[0016] Air quality detectors can monitor and display environmental information in real time; air quality display screens can collect and display the status information of air quality detectors and environmental information in the current area or this loop in real time. Environmental information of all air quality detectors can be displayed in the user hall according to user needs, or environmental information of different floors can be displayed separately. The data will be sent to the air quality monitoring host, which can remotely view the information of all air quality detectors in real time, making it convenient for inspection personnel to grasp the overall environmental information and save time. The air quality detectors, air quality display screens and air quality monitoring hosts communicate using the 485 bus, and the signals are stable and reliable. The standard MODBUS protocol is used to facilitate access to equipment and systems from other manufacturers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the air quality monitoring system according to an embodiment of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of an air quality detector according to an embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the air quality display screen according to an embodiment of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the air quality monitoring host according to an embodiment of the utility model. DETAILED DESCRIPTION

[0021] The principles and features of the present invention are described below in conjunction with all the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0022] The utility model embodiment discloses an indoor air quality monitoring system.

[0023] Reference Figure 1-Figure 4 , an indoor air quality monitoring system, including an air quality detector, an air quality display screen and an air quality monitoring host.

[0024] Air quality detectors can monitor and display environmental information in real time; air quality display screens can collect and display the status information of air quality detectors and environmental information in the current area or this loop in real time. Environmental information of all air quality detectors can be displayed in the user hall according to user needs, or environmental information of different floors can be displayed separately. The data will be sent to the air quality monitoring host, which can remotely view the information of all air quality detectors in real time, making it convenient for inspection personnel to grasp the overall environmental information and save time. The air quality detectors, air quality display screens and air quality monitoring hosts communicate using the 485 bus, and the signals are stable and reliable. The standard MODBUS protocol is used to facilitate access to equipment and systems from other manufacturers.

[0025] The air quality detector is used to detect and display the information value of environmental information in real time. In the embodiment of the utility model, the information value of environmental information is the concentration value of environmental information, and the concentration value of environmental information is compared with a preset threshold value. When the concentration value of environmental information exceeds the preset threshold value, the air quality detector sends a first alarm signal to the air quality monitoring host and transmits the air pollution degree data to the air quality display screen. The air pollution degree data is detected by the air quality detector. The concentration value of environmental information includes the concentration values ​​of carbon dioxide, PM1.0, PM2.5, PM10, temperature, humidity, formaldehyde, and TVOC (volatile organic compounds).

[0026] The air quality detector includes a plurality of gas sensors, which are respectively used to detect the concentration values ​​of the above-mentioned environmental information.

[0027] Reference Figure 2 The air quality detector also includes a single chip microcomputer 1, an LCD screen, an infrared receiver, a first communication module and a buzzer 1; multiple gas sensors are used to detect the concentration value of environmental information; the LCD screen is used to display the concentration value of environmental information; the infrared receiver is used to set the parameters of the air quality detector, such as the detector address number; the air quality detector is connected to the air quality display screen through the first communication module for data transmission; the LCD screen, multiple gas sensors, infrared receiver, communication module (485 communication module) and buzzer 1 are all connected to the single chip microcomputer 1. Among them, the model of the single chip microcomputer 1 is MSP430F4152.

[0028] Reference Figure 3 The air quality display screen is used to display the concentration value of the environmental information detected by each air quality detector in the loop, and transmit the concentration value of the environmental information to the air quality monitoring host. The air quality display screen includes a wireless module (WIFI module), an LED display screen, and a CPU processor. The CPU processor adopts a CortexA7 processor, and adopts serial port isolation, and the communication is stable. The air quality display screen communicates with the air quality detector through the first communication module and collects the concentration value of the environmental information, and transmits the collected concentration value of the environmental information to the air quality monitoring host. And the air quality display screen has an alarm function (buzzer alarm).

[0029] Reference Figure 4 The air quality monitoring host is used to receive the environmental information and the first alarm signal sent by the air quality display screen, and is used to centrally display the environmental information and status information of the air quality detectors in each branch circuit. The air quality monitoring host controls the fresh air system to perform ventilation according to the received first alarm signal, and outputs a second alarm signal. The fresh air system can be a fan.

[0030] The air quality monitoring host includes a human-computer interaction interface, an LED display screen, a second single-chip computer, a wireless module, a second communication module, and a switch signal output module; the human-computer interaction interface, the wireless module, the second communication module, and the switch signal output module are all connected to the second single-chip computer; the switch signal output module is used to output a passive switch signal to control the start and stop of the fresh air system; the air quality display screen and the air quality monitoring host are connected through the second communication module to realize data transmission. The status of the air quality detector and the surrounding environment information can be viewed remotely and in real time through the wireless module (WIFI module). The air quality monitoring host also includes a printer, which is connected to the human-computer interaction interface.

[0031] The human-computer interaction interface can display the status information of the indoor air quality detector and the surrounding environment. When an alarm or communication abnormality occurs, the buzzer will send an alarm signal and the printer will print the alarm information or fault signal.

[0032] Among them, the second single chip microcomputer adopts STM32F107VCT of STMicroelectronics, which communicates with the air quality display screen and the indoor air quality detector through the second communication module (485 communication module).

[0033] The air quality monitoring host also includes an indicator light module, which displays the working status of the entire system.

[0034] It should be noted that the embodiments of the present utility model illustrate the installation requirements of the system by way of example:

[0035] One air quality detector is installed every 50 square meters, two air quality detectors are installed for 50-100 square meters, three air quality detectors are installed for 100-500 square meters, and five or more air quality detectors are installed for 50-1000 square meters. The distribution method is: a single air quality detector should be installed in the central position; within 3 air quality detectors, diagonal deployment is adopted; more than 5 air quality detectors are deployed in plum blossom style. The installation height is: about 1.5 meters from the ground.

[0036] The indoor air quality display screen is generally installed in the lobby on the first floor or near the staircase on each floor. It can be embedded in a box or installed on the wall, about 1.5 meters above the ground.

[0037] The indoor air quality monitoring host is generally installed in the fire control room or duty room. Therefore, the air quality monitoring host also includes a fire power supply for the use of the staff in the fire control room or duty room.

[0038] This system adds an air quality display screen in the area based on the detection of indoor air quality, so that users can more easily grasp the overall environmental information and save time. The display part of the air quality detector is not eye-catching enough to remind people. The addition of an air quality display screen solves the problem that the system cannot display air quality separately in different areas and can only display air quality centrally at the host. It can not only meet the needs of centrally displaying the environmental information of all air quality detectors, but also display the environmental information of different floors separately.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An indoor air quality monitoring system, characterized in that: Including air quality detector, air quality display screen and air quality monitoring host; The air quality detector is used to detect and display the information value of the environmental information in real time, and compare the information value of the environmental information with a preset threshold value. When the information value of the environmental information exceeds the preset threshold value, the air quality detector sends a first alarm signal to the air quality monitoring host and transmits the air pollution degree data to the air quality display screen. The air pollution degree data is detected by the air quality detector; The air quality display screen is used to display the information value of the environmental information detected by each air quality detector in the loop, and transmit the information value of the environmental information to the air quality monitoring host; The air quality monitoring host is used to receive environmental information and a first alarm signal sent by an air quality display screen, and is used to centrally display the environmental information and status information of the air quality detectors in each branch circuit. The air quality monitoring host controls the fresh air system for ventilation according to the received first alarm signal, and outputs a second alarm signal.

2. An indoor air quality monitoring system according to claim 1, characterized in that: The information values ​​of the environmental information include carbon dioxide, PM1.0, PM2.5, PM10, temperature, humidity, formaldehyde and TVOC.

3. An indoor air quality monitoring system according to claim 2, characterized in that: The air quality detector includes a single-chip microcomputer, an LCD screen, multiple gas sensors, an infrared receiver, a first communication module and a buzzer; the multiple gas sensors are used to detect the information values ​​of environmental information; the LCD screen is used to display the information values ​​of environmental information; the infrared receiver is used to set the parameters of the air quality detector; the air quality detector is connected to the air quality display screen through the first communication module for data transmission; the LCD screen, multiple gas sensors, infrared receiver, communication module and buzzer are all connected to the single-chip microcomputer.

4. The indoor air quality monitoring system according to claim 1, characterized in that: The air quality monitoring host includes a human-computer interaction interface, an LED display screen, a second single-chip computer, a wireless module, a second communication module and a switch signal output module; the human-computer interaction interface, the wireless module, the second communication module and the switch signal output module are all connected to the second single-chip computer; the switch signal output module is used to output a passive switch signal to control the start and stop of the fresh air system; the air quality display screen and the air quality monitoring host are connected through the second communication module to realize data transmission.

5. An indoor air quality monitoring system according to claim 4, characterized in that: The air quality monitoring host also includes an indicator light module, which displays the working status of the entire system.

6. An indoor air quality monitoring system according to claim 4, characterized in that: The air quality monitoring host also includes a printer, and the printer is connected to the human-computer interaction interface.

Images