1. An environment control system based on indoor air quality comprises an air supply pipeline (S4), an air conditioning treatment device (S1), an air return pipeline (S5) and an air conditioning fresh air system (S6), wherein the air supply pipeline (S4) and the air return pipeline (S5) are connected with the air conditioning treatment device (S1); the method is characterized in that: the TVOC purifying device (S3) is arranged in the air supply pipeline (S4), the PM2.5 filtering device (S2) is arranged in the air return pipeline (S5), the environment controller is installed in an air-conditioned room, a chip of the environment controller is connected with a built-in sensor, and the sensor comprises a temperature and humidity sensor, a carbon dioxide sensor, a TVOC sensor and a PM2.5 concentration sensor; the temperature and humidity control wire group (A) is connected with the air conditioning processing equipment (S1) and the chip; a filter device control line set (B) connecting the PM2.5 filter arrangement (S2) and the chip; an air cleaning device control line group (C) connecting the TVOC cleaning device (S3) and the chip; and the carbon dioxide control wire group (D) is connected with the chip and the air-conditioning fresh air system.

2. An indoor air quality-based environmental control system according to claim 1, wherein: the environment controller comprises a liquid crystal display panel (1), an operation button, a panel cover (10), a bottom plate cover (11), a chip unit box (12), a top air hole (14), a bottom air hole (15), an external wiring terminal (16) and a network cable interface (17); the operating button and the liquid crystal display panel (1) are positioned on the same panel cover (10); the top air hole (14) and the bottom air hole (15) are respectively positioned at the top and the bottom of the environment controller, and the chip unit box (12) is positioned inside the environment controller; the external wiring terminal (16) and the network cable interface (17) are positioned on the bottom plate cover (11); the sensor is connected with the chip in the chip unit box (12); the chip is used for completing calculation, display, setting and regulation of indoor temperature and humidity, carbon dioxide concentration, pollutant concentration and PM2.5 concentration.

3. An indoor air quality-based environmental control system according to claim 2, wherein: the operation button comprises an operation switch button (2); a fan operating button (3); a temperature and humidity operation button (4); a contaminant concentration operation button (5); a carbon dioxide concentration operating button (6) and a PM2.5 concentration operating button (7).

4. An indoor air quality-based environmental control system according to claim 3, wherein: the operation buttons further include an increase operation button (8) and a decrease operation button (9).

5. An indoor air quality-based environmental control system according to claim 2, 3 or 4, wherein: and a plurality of screw holes and wire pressing holes (18) of the external wiring terminals (16) are reserved at the bottom of the chip unit box (12) and are connected with an external power supply cable.

Background

With the general improvement of living standard, the requirements of people on the environment are higher and higher based on the health requirements. According to relevant literature survey, about 70% -80% of the time of human beings is indoor activity. Therefore, the indoor environment quality is an important factor affecting the physical and mental health of people.

Currently, the indoor environment controller is a display, regulation and control device based on temperature as a single variable, and is called a temperature controller for short in the industry and in the market. However, the indoor temperature is only one dimension of the indoor environment quality, and the requirement of people on the indoor environment quality cannot be met only by monitoring and controlling the temperature under the background that people pay more and more attention to the indoor environment health, especially in public buildings such as offices, businesses and hotels.

The main aspects affecting the indoor environment quality are light environment, sound environment, heat and humidity environment, indoor air quality and the like. Especially for the display, monitoring and regulation of hot and humid environment and indoor air quality, the existing temperature controller can not meet the requirements.

Disclosure of Invention

The invention provides an environment control system based on indoor air quality, which is used for displaying, monitoring and regulating environment control related to indoor air quality and integrates thermal environment and air CO related to air temperature₂The air quality related display, monitoring and regulation technology comprises the following steps of displaying, monitoring and regulating the air quality related to concentration, pollutant concentration, particulate matter PM2.5 concentration and the like.

The technical scheme is as follows: an environment control system based on indoor air quality comprises an air supply pipeline, air-conditioning treatment equipment, an air return pipeline and an air-conditioning fresh air system, wherein the air supply pipeline and the air return pipeline are connected with the air-conditioning treatment equipment; the TVOC purifying device is arranged in the air supply pipeline, the PM2.5 filtering device is arranged in the air return pipeline, the environment controller is arranged in an air-conditioned room, a chip of the environment controller is connected with a built-in sensor, and the sensor comprises a temperature and humidity sensor, a carbon dioxide sensor, a TVOC sensor and a PM2.5 concentration sensor; the temperature and humidity control line set is connected with the air conditioner processing equipment and the chip; the filtering equipment control line set is connected with the PM2.5 filtering device and the chip; the air purification equipment control line set is connected with the TVOC purification device and the chip; the carbon dioxide control line set is connected with the chip and the air conditioner fresh air system.

Based on the technical characteristics: the environment controller comprises a liquid crystal display panel, an operation button, a panel cover, a bottom plate cover, a chip unit box, a top air hole, a bottom air hole, an external wiring terminal and a network cable interface; the operation button and the liquid crystal display panel are positioned on the same panel cover; the top air hole and the bottom air hole are respectively positioned at the top and the bottom of the environment controller, and the chip unit box is positioned inside the environment controller; the external wiring terminal and the network cable interface are positioned on the bottom plate cover; the sensor is connected with the chip in the chip unit box; the chip is used for completing calculation, display, setting and regulation of indoor temperature and humidity, carbon dioxide concentration, pollutant concentration and PM2.5 concentration.

Based on the technical characteristics: the operation button comprises an operation switch button; a fan operating button; a temperature and humidity operation button; a contaminant concentration operating button; a carbon dioxide concentration operation button and a PM2.5 concentration operation button.

Based on the technical characteristics: the operation buttons further include an increase operation button and a decrease operation button.

Based on the technical characteristics: and the bottom of the chip unit box is provided with a plurality of screw holes and wire pressing holes of external wiring terminals and is connected with an external power supply cable.

The main aspects affecting the indoor environment quality are light environment, sound environment, heat and humidity environment, indoor air quality and the like. The patent is irrelevant to indoor light environment and sound environment, but is an environment controller for displaying, monitoring and regulating and controlling the indoor air qualityI.e. integration of thermal environment related to air temperature, with CO in air₂The air quality related display, monitoring and regulation technology patents such as concentration, pollutant concentration and particulate matter PM2.5 concentration.

The environment controller comprises a liquid crystal display panel and an operation button, and a chip, a temperature and humidity sensor, a carbon dioxide sensor and a TVOC (transient voltage over current) sensor, namely a pollutant concentration sensor and a PM2.5 concentration sensor are contained in the environment controller. Meanwhile, the environment controller is provided with a mounting hole of a standard wiring bottom box, and installation and use in engineering are provided.

Temperature and humidity sensor, TVOC sensor, carbon oxide sensor, PM2.5 concentration sensor, temperature value, indoor pollutant TVOC (such as formaldehyde), CO, etc₂And the concentration value of the indoor particulate matter PM2.5 is converted into an electric signal and is input into a chip of the controller, the electric signal is converted through software or a program arranged in the chip to obtain a monitoring value, and the monitoring value is used for controlling external related air treatment equipment by sending an instruction to achieve the control purpose.

The liquid crystal display panel and the operation buttons of the environment controller can display the indoor air quality condition in real time, and create conditions for setting personalized standards and local operation for indoor personnel to realize man-machine information exchange. Indoor personnel can set indoor air quality standards to be achieved according to subjective feelings, outdoor environment conditions and the like. After receiving the command through the operation of personnel on the panel, the chip of the environmental controller carries out the regulation and control of external respectively relevant air treatment equipment according to the measured feedback data of the respective sensors of temperature, humidity, pollutant, carbon dioxide and PM2.5, namely the regulation and control are carried out through the air conditioning treatment equipment, the PM2.5 filtering device, the TVOC purifying device and the air conditioning treatment equipment.

Drawings

Fig. 1 is a schematic diagram of system control wiring in an indoor air quality-based environmental control system.

FIG. 2 is a top view of the environmental controller of the present invention.

Fig. 3 is a front view of the environmental controller of the present invention.

FIG. 4 is a bottom view of the environmental controller of the present invention.

Fig. 5 is a right side view of the environmental controller of the present invention.

Fig. 6 is a rear view of the environmental controller of the present invention.

The reference numbers in the figures denote:

air conditioning treatment equipment S1, PM2.5 filtering device S2, TVOC purification device S3, air supply pipeline S4, return air pipeline S5, air conditioning fresh air system S6, air conditioning room S7 and room ceiling S8.

The device comprises a liquid crystal display panel 1, an operation switch button 2, a fan operation button 3, a temperature and humidity operation button 4, a pollutant concentration operation button 5, a carbon dioxide concentration operation button 6, a PM2.5 concentration operation button 7, a temperature increase operation button 8, a temperature decrease operation button 9, a panel cover 10, a bottom plate cover 11, a chip unit box 12, a mounting hole 13, a top air hole 14, a bottom air hole 15, an external wiring terminal 16 and a network cable interface 17.

Detailed Description

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings. These embodiments are merely illustrative of the present invention and are not intended to limit the present invention.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

As shown in fig. 1, in the environment control system based on indoor air quality, an air supply pipeline S4, an air conditioning processing device S1, a return air pipeline S5 and an air conditioning fresh air system S6 are arranged in a suspended ceiling S8, and the air supply pipeline S4 and the return air pipeline S5 are connected with the air conditioning processing device S1; the TVOC purifying device S3 is disposed in the air supply duct S4, the PM2.5 filtering device S2 is disposed in the air return duct S5, the environment controller is installed in the air-conditioned room S7, and the chip of the environment controller is connected to the built-in sensor.

The sensor includes temperature and humidity sensor, carbon dioxide sensor, TVOC sensor, PM2.5 concentration sensor.

The chip of the environment controller is connected to the controller of the air conditioning processing equipment S1 through the temperature and humidity control wire group A, and the purposes of corresponding state display, parameter setting, operation regulation control of the on-off, fan operation, temperature and the like of the air conditioning processing equipment are achieved.

The chip of the environment controller is connected to the controller of the PM2.5 filtering device S2 through the filtering device control line group B, and the purposes of starting and stopping functions and state display of the PM2.5 filtering device S2 for room air supply/return are achieved.

The chip of the environment controller is connected to the controller of the TVOC purifying device S3 through the air purifying device control wire group C, and the purposes of starting and stopping functions and state display of the air conditioning processing device S1 for returning air to the room are achieved.

The chip of the environment controller is connected with an air-conditioning fresh air system S6 through a carbon dioxide control wire group D. The air-conditioning fresh air system S6 is an air-conditioning system of the existing configuration of the whole building, the external intelligent system of the whole building realizes communication (for example, BA system), the command of the indoor carbon dioxide concentration on the fresh air quantity requirement of the air-conditioning fresh air system S6 is sent out through data interaction, and the air-conditioning fresh air system S6 of the whole building is instructed to adjust the fresh air supply quantity to meet the carbon dioxide concentration requirement of the room.

The conventional temperature sensor employs a glass liquid thermometer method, a digital display thermometer method, which is selected in view of economy and practicality.

Conventional humidity sensors employ an aeration psychrometric method, a hair hygrometer method, a lithium chloride hygrometer method, and the like, and the lithium chloride hygrometer method is selected in view of economy and practicality.

Conventional carbon dioxide sensors employ a non-spectroscopic infrared gas analysis method, a gas chromatography method, a volumetric drop method, and the like, and the non-spectroscopic infrared gas analysis method is selected in view of economy and practicality.

According to the invention, the concentration sensor of the TVOC (such as formaldehyde) pollutant adopts a high-sensitivity electrochemical sensor principle, and combines a single chip microcomputer technology and a network communication technology to collect an air sample in a detection place, so that the sensor obtains different potential signals due to different concentrations of the TVOC pollutant, and the TVOC concentration can be displayed by processing the signals. The concentration of the TVOC contaminant in the air is analyzed by detecting the TVOC contaminant in the air, followed by high precision detection.

The PM2.5 concentration sensor adopts a light scattering principle, an infrared light emitting diode and a phototransistor are arranged at the opposite corners in the sensor, the optical axes of the infrared light emitting diode and the phototransistor are intersected, when airflow with dust passes through the intersected area of the optical axes, the dust reflects infrared light, and the reflected light intensity is in direct proportion to the dust concentration. Conventional PM2.5 concentration sensors employ an optical infrared method and a turbidity method, a laser method and a particle counting method, a Beta ray method, a micro-oscillation balance method, a weight method, and the like, and the optical infrared method is selected in view of economy and practicality.

The environment controller of the invention has the principle that signals of a temperature and humidity sensor, a PM2.5 concentration sensor, a TVOC sensor and the like are detected, weak signals of the sensors are amplified and preprocessed through a signal operational amplifier, external noise signal interference is eliminated through a filter circuit, the driving capability and the anti-interference capability of the signals are enhanced, the signal input condition of A/D conversion is met, the resolution and the measurement precision are improved, and meanwhile, circuits such as isolation and protection are used for avoiding damages to internal devices of a module caused by abnormal phenomena such as overpressure and the like which may occur in an input circuit. Then through A/D collection, and adopting high-precision CPU to process and calculate, then converting into pollutant concentration value, and displaying on liquid crystal screen.

The environment controller of the invention also has the function of realizing the communication information transmission of the network interface through the temperature and humidity sensor, the carbon dioxide sensor, the TVOC sensor and the PM2.5 concentration sensor which are arranged in the controller, the circuit control integrated mainboard, the core component of the control chip unit and the connecting line group of the controllers such as the external air processing equipment, the filtering device and the like, thereby achieving the aims of displaying, setting, adjusting and controlling the parameters related to the air quality and realizing the purpose of man-machine information exchange.

As shown in fig. 2 to 6, an environmental controller of an environmental control system based on indoor air quality, which adopts a standard panel size, can also customize the panel size in a range of 1.0m to 1.5m ground clearance height according to the installation of a finishing work. Leaving mounting holes 13.

The environment controller realizes an information display function through the liquid crystal panel 1. The environment controller provides information through the operation buttons on the panel cover 10 and by means of the liquid crystal display panel 1, and the indoor air quality setting and operation functions are completed.

The operation buttons comprise an operation switch button 2, a fan operation button 3, a temperature and humidity operation button 4, a pollutant concentration operation button 5 and a carbon dioxide concentration operation button 6; PM2.5 concentration operation button 7; adding an operation button 8; the operation buttons 9 are reduced.

The bottom plate cover 11 and the chip unit box 12 of the environmental controller are connected in an integrated manner. In the space enclosed by the panel cover 10 and the bottom plate cover 11, a temperature and humidity sensor, a carbon dioxide sensor, a TVOC sensor, a PM2.5 concentration sensor and a circuit control integrated mainboard for connecting the sensor and a chip in the chip unit box 12 are arranged. There are top air holes 14 and bottom air holes 15 at the top and bottom of the environmental controller, so that the space for installing the sensor, i.e. the space enclosed by the panel cover 10 and the bottom plate cover 11, can communicate with the room air, so that the sensor can work normally. The environmental controller completes the functions of calculating, displaying, setting and adjusting the indoor temperature, the carbon dioxide concentration, the pollutant concentration and the PM2.5 concentration through the chip in the chip unit box 12. The bottom of the chip unit box 12 of the environmental controller is provided with a plurality of screw holes and wire pressing holes 18 of external wiring terminals 16, which can be connected with cables for external power supply and the like. The bottom of the chip unit box 12 of the environmental controller is also provided with a network cable interface 17 so as to realize communication and information transmission with the outside.

The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.