Environment control system and method based on air volume feedback

Abstract

The invention discloses an environment control system and method based on air quantity feedback, and relates to the technical field of ventilation quantity control, the system comprises a controller, an environment parameter acquisition module and a fan, the environment parameter acquisition module and the fan are located in a target space environment, and the environment parameter acquisition module and the fan are both connected with the controller; a unit air valve is mounted on the fan; the unit air valves are used for detecting the actually measured ventilation quantity of the target space environment in real time; the environmental parameter acquisition module is used for acquiring environmental parameters of a target space environment in real time; the controller is used for determining the current required ventilation quantity according to the relation between the environment parameters collected in real time and the ventilation quantity and conducting feedback control on the draught fan according to the current required ventilation quantity and the actually-measured ventilation quantity. The timeliness and accuracy of ventilation quantity control are improved.

Description

Technical Field

[0001] The present application relates to the technical field of ventilation volume control, and in particular to an environmental control system and method based on air volume feedback. Background Art

[0002] At present, the environmental control system of livestock and poultry farming can monitor the temperature, humidity, CO2 concentration and NH3 concentration of livestock and poultry houses, but the air volume of the fan is not detected, which leads to insufficient or excessive ventilation levels, affecting the growth and development of livestock and poultry. Summary of the invention

[0003] The purpose of this application is to provide an environmental control system and method based on air volume feedback to improve the timeliness and accuracy of ventilation volume control.

[0004] To achieve the above objectives, this application provides the following solutions:

[0005] In a first aspect, the present application provides an environment control system based on air volume feedback, comprising: a controller, an environment parameter acquisition module and a fan located in a target space environment, wherein the environment parameter acquisition module and the fan are both connected to the controller; a unit air valve is installed on the fan; the unit air valve is used to detect the measured ventilation volume of the target space environment in real time;

[0006] The environmental parameter acquisition module is used to acquire the environmental parameters of the target space environment in real time;

[0007] The controller is used to determine the current required ventilation volume according to the relationship between the environmental parameters collected in real time and the ventilation volume, and to perform feedback control on the fan according to the current required ventilation volume and the actually measured ventilation volume.

[0008] Optionally, the target space environment is a target livestock and poultry house;

[0009] The environmental parameters include temperature, humidity, CO2 concentration and NH3 concentration; the environmental parameter acquisition module includes a temperature sensor, a humidity sensor, a CO2 sensor and an NH3 sensor; the temperature sensor is used to collect the temperature in the target space environment in real time, the humidity sensor is used to collect the humidity in the target space environment in real time, the CO2 sensor is used to collect the CO2 concentration in the target space environment in real time, and the NH3 sensor is used to collect the NH3 concentration in the target space environment in real time.

[0010] Optionally, the current required ventilation volume is expressed as:

[0011] Q 需求 =Q1+ΔQ Rh +ΔQ CO2 +ΔQ NH3

[0012] Among them, ΔQ Rh =Q Rh -Q1, ΔQ CO2 =Q CO2 -Q1, ΔQ NH3 =Q NH3 -Q1;Q 需求 represents the current required ventilation volume, Q1 is the relationship between temperature and required ventilation volume, Q Rh is the relationship between humidity and required ventilation, Q CO2 is the relationship between CO2 concentration and required ventilation, Q NH3 is the relationship between NH3 concentration and required ventilation volume, ΔQ Rh is the first intermediate parameter, ΔQ CO2 is the second intermediate parameter, ΔQ NH3 is the third intermediate parameter.

[0013] Optionally, the relationship between the temperature and the required ventilation volume is expressed as:

[0014]

[0015] Among them, q min is the minimum ventilation volume for each livestock and poultry, q max is the maximum ventilation volume for each livestock and poultry, Δ temp is the temperature difference range from the minimum ventilation volume to the maximum ventilation volume, n is the number of livestock and poultry, T test is the temperature collected in real time, T set is the temperature setting value;

[0016] The relationship between humidity and required ventilation is expressed as:

[0017]

[0018] Among them, Rh test is the real-time collected humidity, Rh set is the humidity setting value, Δ qRh is the percentage increase of the first ventilation, Δ Rh is the humidity difference range;

[0019] The relationship between the CO2 concentration and the required ventilation volume is expressed as:

[0020]

[0021] Among them, CO2 test is the real-time collected CO2 concentration, CO2 set is the CO2 concentration setting value, Δ CO2 is the CO2 concentration difference range, Δ qCO2 Add percentage for secondary ventilation;

[0022] The relationship between the NH3 concentration and the required ventilation volume is expressed as:

[0023]

[0024] Among them, NH3 test is the real-time collected NH3 concentration, NH3 set is the set value of NH3 concentration, Δ NH3 is the NH3 concentration difference range, Δ qNH3 Increase the percentage for the tertiary ventilation.

[0025] Optionally, the target space environment also includes a humidifying device, a cooling device and a heating device, all of which are connected to the controller. The humidifying device is used to adjust the humidity in the target space environment according to the real-time collected humidity and the humidity setting value, and the cooling device and the heating device are used to adjust the temperature in the target space environment according to the real-time collected temperature and the temperature setting value.

[0026] Optionally, in terms of feedback control of the fan according to the current required ventilation volume and the measured ventilation volume, the controller is specifically used to:

[0027] Calculate the current fan control voltage based on the relationship between the current required ventilation volume, the measured ventilation volume and the fan control voltage;

[0028] Determine whether the current fan control voltage is less than a first set voltage value, and output a first determination result;

[0029] If the first judgment result is yes, the current valve plate opening voltage is calculated according to the relationship between the current required ventilation volume, the measured ventilation volume and the fan valve plate opening, and the current valve plate opening voltage is output to the fan valve plate;

[0030] Determine whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and output a second judgment result;

[0031] If the second judgment result is yes, it is determined that the target space environment is seriously insufficiently ventilated, the control valve plate opening voltage is increased by a second set voltage value, and a serious insufficient ventilation alarm is issued;

[0032] If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time during which the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output a third judgment result;

[0033] If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the control valve plate opening voltage is increased by a second set voltage value;

[0034] If the third judgment result is output as no, then determine whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and output a fourth judgment result;

[0035] If the fourth judgment result is yes, it is determined that the ventilation is excessive, and the control valve plate opening voltage is reduced by a second set voltage value;

[0036] If the fourth judgment result is judged as no, then judging whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and outputting a fifth judgment result;

[0037] If the fifth judgment result is yes, it is determined that the ventilation is normal;

[0038] If the first judgment result is no, the current fan control voltage is output to the fan;

[0039] Determine whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and output a second judgment result;

[0040] If the second judgment result is yes, it is determined that the target space environment is seriously insufficiently ventilated, the current fan control voltage is controlled to increase by a second set voltage value, and a serious insufficient ventilation alarm is issued;

[0041] If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time during which the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output a third judgment result;

[0042] If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the current fan control voltage is controlled to increase the second set voltage value;

[0043] If the third judgment result is output as no, then determine whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and output a fourth judgment result;

[0044] If the fourth judgment result is yes, it is determined that the ventilation is excessive, and the current fan control voltage is controlled to reduce the second set voltage value;

[0045] If the fourth judgment result is judged as no, then judging whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and outputting a fifth judgment result;

[0046] If the fifth judgment result is yes, it is determined that the ventilation is normal.

[0047] Optionally, the controller is also used to issue a fan performance degradation alarm message if the absolute value of the difference between the current required ventilation volume and the measured ventilation volume exceeds a set value.

[0048] Optionally, the air volume feedback-based environmental control system further includes a cloud platform, which is connected to the controller and is used to remotely monitor environmental parameters and measured ventilation volume collected in real time in the target space environment.

[0049] Optionally, the fan is a centrifugal fan.

[0050] In a second aspect, the present application provides an environment control method based on wind volume feedback, wherein the environment control method based on wind volume feedback applies the environment control system based on wind volume feedback, and the environment control method based on wind volume feedback includes:

[0051] The unit air valve detects the measured ventilation volume of the target space environment in real time, and the environmental parameter acquisition module acquires the environmental parameters of the target space environment in real time;

[0052] The controller determines the current required ventilation volume based on the relationship between the real-time collected environmental parameters and the ventilation volume, and performs feedback control on the fan based on the current required ventilation volume and the measured ventilation volume.

[0053] According to the specific embodiments provided in this application, this application discloses the following technical effects:

[0054] The present application provides an environmental control system and method based on air volume feedback, which determines the current required ventilation volume according to the relationship between the environmental parameters collected in real time and the ventilation volume, and performs feedback control on the fan or unit air valve according to the current required ventilation volume and the measured ventilation volume, thereby realizing real-time feedback control of the target space environment, thereby improving the timeliness and accuracy of ventilation volume control. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0056] Figure 1 A schematic diagram of the structure of an environmental control system based on air volume feedback provided in one embodiment of the present application;

[0057] Figure 2A schematic flow chart of an environment control method based on air volume feedback provided in one embodiment of the present application; Figure 3 A flow chart of an environment control method based on air volume feedback is provided as another embodiment of the present application. DETAILED DESCRIPTION

[0058] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0059] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0060] This application provides an environmental control system based on wind volume feedback, such as Figure 1 As shown, an environmental control system based on air volume feedback includes: a controller and an environmental parameter acquisition module and a fan located in a target space environment, wherein the environmental parameter acquisition module and the fan are both connected to the controller; the fan is used for ventilating the target space environment with the outside world, and a unit air valve is installed on the fan; the unit air valve is used for real-time detection of the actual ventilation volume of the target space environment.

[0061] The environmental parameter acquisition module is used to acquire the environmental parameters of the target space environment in real time.

[0062] The controller is used to determine the current required ventilation volume according to the relationship between the environmental parameters collected in real time and the ventilation volume, and to perform feedback control on the fan according to the current required ventilation volume and the actually measured ventilation volume.

[0063] The present application determines the current required ventilation volume based on the relationship between the real-time collected environmental parameters and the ventilation volume, and performs feedback control on the fan or unit air valve according to the current required ventilation volume and the measured ventilation volume, thereby realizing real-time feedback control of the target space environment, thereby improving the timeliness and accuracy of ventilation volume control.

[0064] In an exemplary embodiment, the target space environment is a target livestock and poultry house, the fan is a centrifugal (Electrical Commutation, EC) fan, and the unit air valve is installed at the front end of the centrifugal fan.

[0065] The controller is also used to issue a fan performance degradation alarm message if the absolute value of the difference between the current required ventilation volume and the actual ventilation volume exceeds the set value, thereby achieving early warning of the fan performance and reminding the livestock and poultry house manager to perform maintenance on the air inlet windows and fans.

[0066] The air volume feedback-based environmental control system further includes a farm computer and a cloud platform (data center), the cloud platform is connected to the controller, and the cloud platform is used to remotely monitor the environmental parameters and measured ventilation volume collected in real time in the target space environment. The farm computer can be a personal computer (PC), and the manager can monitor the operation of each target livestock and poultry house through the cloud platform or the farm computer, and provide data support for managers and technicians at all levels.

[0067] The environmental parameters include temperature, humidity, CO2 concentration and NH3 concentration; the environmental parameter acquisition module includes a temperature sensor, a humidity sensor, a CO2 sensor and an NH3 sensor; the temperature sensor is used to collect the temperature in the target space environment in real time, the humidity sensor is used to collect the humidity in the target space environment in real time, the CO2 sensor is used to collect the CO2 concentration in the target space environment in real time, and the NH3 sensor is used to collect the NH3 concentration in the target space environment in real time.

[0068] The current required ventilation volume is expressed as:

[0069] Q 需求 =Q1+ΔQ Rh +ΔQ CO2 +ΔQ NH3

[0070] Among them, ΔQ Rh =Q Rh -Q1, ΔQ CO2 =Q CO2 -Q1, ΔQ NH3 =Q NH3 -Q1;Q 需求 represents the current required ventilation volume, Q1 is the relationship between temperature and required ventilation volume, Q Rh is the relationship between humidity and required ventilation, Q CO2 is the relationship between CO2 concentration and required ventilation, Q NH3 is the relationship between NH3 concentration and required ventilation volume, ΔQ Rh is the first intermediate parameter, ΔQ CO2 is the second intermediate parameter, ΔQ NH3 is the third intermediate parameter.

[0071] The relationship between the temperature and the required ventilation volume is expressed as:

[0072]

[0073] Among them, q min is the minimum ventilation volume for each livestock and poultry, q max is the maximum ventilation volume for each livestock and poultry, Δ temp is the temperature difference range from the minimum ventilation volume to the maximum ventilation volume, n is the number of livestock and poultry, T test is the temperature collected in real time, T set is the temperature setting value;

[0074] The relationship between humidity and required ventilation is expressed as:

[0075]

[0076] Among them, Rh test is the real-time collected humidity (%), Rh set is the humidity setting value (%), Δ qRh is the percentage increase of the first ventilation, Δ Rh is the humidity difference range (%);

[0077] The relationship between the CO2 concentration and the required ventilation volume is expressed as:

[0078]

[0079] Among them, CO2 test is the real-time collected CO2 concentration (ppm), CO2 set is the CO2 concentration setting value (ppm), Δ CO2 is the CO2 concentration difference range (ppm), Δ qCO2 Add percentage for secondary ventilation.

[0080] The relationship between the NH3 concentration and the required ventilation volume is expressed as:

[0081]

[0082] Among them, NH3 test is the real-time collected NH3 concentration (ppm), NH3 set is the NH3 concentration setting value (ppm), Δ NH3 is the NH3 concentration difference range (ppm), Δ qNH3 Increase the percentage for the tertiary ventilation.

[0083] The above-mentioned minimum ventilation volume, maximum ventilation volume, temperature setting value, humidity setting value, CO2 concentration setting value and NH3 concentration setting value can all be set to different values ​​according to the age of livestock and poultry in the target livestock and poultry house.

[0084] The target space environment also includes a ventilation window, a humidifying device, a cooling device and a heating device, all of which are connected to the controller. The humidifying device is used to adjust the humidity in the target space environment according to the real-time collected humidity and the humidity setting value, and the cooling device and the heating device are used to adjust the temperature in the target space environment according to the real-time collected temperature and the temperature setting value. The ventilation window is mainly used for external gas to enter the target space environment, and the fan is mainly used to discharge the gas in the target space environment.

[0085] like Figure 2 As shown, in terms of feedback control of the fan according to the current required ventilation volume and the measured ventilation volume, the controller is specifically used to:

[0086] According to the current required ventilation volume, the measured ventilation volume (Q 实测 ) and the fan control voltage to calculate the current fan control voltage (V 风机 ).

[0087] Determine whether the current fan control voltage is less than a first set voltage value, and output a first determination result.

[0088] If the first judgment result is yes, the current valve plate opening voltage (V 阀板 ), and output the current valve plate opening voltage to the fan valve plate.

[0089] It is determined whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and a second determination result is output.

[0090] If the second judgment result is yes, it is determined that the target space environment is seriously insufficiently ventilated, the control valve plate opening voltage is increased by a second set voltage value, and a serious insufficient ventilation alarm is issued. The second set voltage value is 0.1V.

[0091] If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time when the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output the third judgment result.

[0092] If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the control valve plate opening voltage is increased by a second set voltage value.

[0093] If the third judgment result is output as no, it is determined whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and a fourth judgment result is output.

[0094] If the fourth determination result is yes, it is determined that the ventilation is excessive, and the control valve plate opening voltage is reduced by a second set voltage value.

[0095] If the fourth judgment result is no, then determine whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and output the fifth judgment result.

[0096] If the fifth judgment result is yes, it is determined that the ventilation is normal.

[0097] If the first judgment result is no, the current fan control voltage is output to the fan.

[0098] It is determined whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and a second determination result is output.

[0099] If the second judgment result is yes, it is determined that there is a serious lack of ventilation in the target space environment, the current fan control voltage is controlled to increase the second set voltage value, and a serious lack of ventilation alarm is issued.

[0100] If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time when the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output the third judgment result.

[0101] If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the current fan control voltage is controlled to increase the second set voltage value.

[0102] If the third judgment result is output as no, it is determined whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and a fourth judgment result is output.

[0103] If the fourth judgment result is yes, it is determined that the ventilation is excessive, and the current fan control voltage is controlled to reduce the second set voltage value.

[0104] If the fourth judgment result is no, then determine whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and output the fifth judgment result.

[0105] If the fifth judgment result is yes, it is determined that the ventilation is normal.

[0106] The first set proportional coefficient, the second set proportional coefficient and the third set proportional coefficient are all adjusted according to actual conditions. In a specific implementation, the first set proportional coefficient is 0.8, the second set proportional coefficient is 0.95, and the third set proportional coefficient is 1.05.

[0107] The set time is adjusted according to actual conditions. In a specific implementation, the set time is 5 minutes.

[0108] The second set voltage value is specifically 0.1V, and 0.1V is the gradual change amplitude value when the fan control voltage needs to be changed, so as to avoid a sharp change in ventilation volume and prevent stress reactions in livestock and poultry.

[0109] The first set voltage value is the minimum voltage for the fan to maintain a certain negative pressure. When the current fan control voltage is less than the first set voltage value, the ventilation volume is adjusted by controlling the valve plate opening. When the current fan control voltage is greater than or equal to the first set voltage value, the ventilation volume is adjusted by controlling the fan operating speed, thereby achieving stable and effective minimum ventilation in the target space environment, minimizing the fan energy consumption, avoiding insufficient or excessive ventilation levels, and thus avoiding the impact of ventilation volume on the growth and development of livestock and poultry.

[0110] The measured ventilation volumes in this application are all measured ventilation volumes collected in real time. Figure 2 The air volume of the medium blower is the actual measured ventilation volume.

[0111] The present application realizes real-time detection of the actual ventilation volume of the livestock and poultry house, and then combines other information, through internal calculation and judgment, timely adjusts the fan speed or valve plate opening, changes the ventilation level of the livestock and poultry house, and accurately controls the ventilation level, so that the environment in the house reaches the expected effect, while maintaining stable and effective minimum ventilation.

[0112] Based on the same inventive concept, the embodiment of the present application also provides an environmental control method based on wind volume feedback that applies the above-mentioned environmental control system based on wind volume feedback. The implementation solution provided by the method to solve the problem is similar to the implementation solution recorded in the above-mentioned system, so the specific limitations in one or more embodiments of the environmental control method based on wind volume feedback provided below can refer to the limitations of the environmental control system based on wind volume feedback above, and will not be repeated here.

[0113] In an exemplary embodiment, Figure 3 As shown, an environment control method based on wind volume feedback is provided, the environment control method based on wind volume feedback applies the environment control system based on wind volume feedback, and the environment control method based on wind volume feedback includes:

[0114] Step 101: The unit air valve detects the actual ventilation volume of the target space environment in real time, and the environmental parameter acquisition module acquires the environmental parameters of the target space environment in real time.

[0115] Step 102: The controller determines the current required ventilation volume according to the relationship between the environmental parameters collected in real time and the ventilation volume, and performs feedback control on the fan according to the current required ventilation volume and the measured ventilation volume.

[0116] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. An environmental control system based on air volume feedback, It is characterized in that The air volume feedback-based environmental control system comprises: a controller, an environmental parameter acquisition module and a fan located in the target space environment, wherein the environmental parameter acquisition module and the fan are both connected to the controller; a unit air valve is installed on the fan; and the unit air valve is used to detect the measured ventilation volume of the target space environment in real time; The environmental parameter acquisition module is used to acquire the environmental parameters of the target space environment in real time; The controller is used to determine the current required ventilation volume according to the relationship between the environmental parameters collected in real time and the ventilation volume, and to perform feedback control on the fan according to the current required ventilation volume and the actually measured ventilation volume.

2. The environmental control system based on air volume feedback according to claim 1, It is characterized in that The target space environment is a target livestock and poultry house; The environmental parameters include temperature, humidity, CO 2 concentration and NH 3 The environmental parameter acquisition module includes a temperature sensor, a humidity sensor, a CO 2 Sensors and NH 3 sensor; the temperature sensor is used to collect the temperature in the target space environment in real time, the humidity sensor is used to collect the humidity in the target space environment in real time, the CO 2 The sensor is used to collect the CO in the target space environment in real time. 2 concentration, the NH 3 The sensor is used to collect the NH in the target space environment in real time. 3 concentration.

3. The environmental control system based on wind volume feedback according to claim 2, It is characterized in that The current required ventilation volume is expressed as: Q 需求 =Q 1 +ΔQ Rh +ΔQ CO2 +ΔQ NH3 Among them, ΔQ Rh =Q Rh -Q 1 , ΔQ CO2 =Q CO2 -Q 1 , ΔQ NH3 =Q NH3 -Q 1 ;Q 需求 represents the current required ventilation volume, Q 1 is the relationship between temperature and required ventilation, Q Rh is the relationship between humidity and required ventilation, Q CO2 For CO 2 Relationship between concentration and required ventilation, Q NH3 For NH 3 Relationship between concentration and required ventilation, ΔQ Rh is the first intermediate parameter, ΔQ CO2 is the second intermediate parameter, ΔQ NH3 is the third intermediate parameter.

4. The environmental control system based on wind volume feedback according to claim 3, It is characterized in that The relationship between the temperature and the required ventilation volume is expressed as: Among them, q min is the minimum ventilation volume for each livestock and poultry, q max is the maximum ventilation volume for each livestock and poultry, Δ temp is the temperature difference range from the minimum ventilation volume to the maximum ventilation volume, n is the number of livestock and poultry, T test is the temperature collected in real time, T set is the temperature setting value; The relationship between humidity and required ventilation is expressed as: Among them, Rh test is the real-time collected humidity, Rh set is the humidity setting value, Δ qRh is the percentage increase of the first ventilation, Δ Rh is the humidity difference range; The CO 2 The relationship between concentration and required ventilation is expressed as: Among them, CO2 test The real-time collected CO 2 Concentration, CO2 set For CO 2 Concentration setting value, Δ CO2 For CO 2 Concentration difference range, Δ qCO2 Add percentage for secondary ventilation; The NH 3 The relationship between concentration and required ventilation is expressed as: Among them, NH3 test NH is collected in real time 3 Concentration, NH3 set For NH 3 Concentration setting value, Δ NH3 For NH 3 Concentration difference range, Δ qNH3 Increase the percentage for the tertiary ventilation.

5. The environmental control system based on wind volume feedback according to claim 4, It is characterized in that The target space environment also includes a humidifying device, a cooling device and a heating device, all of which are connected to the controller. The humidifying device is used to adjust the humidity in the target space environment according to the real-time collected humidity and the humidity setting value, and the cooling device and the heating device are used to adjust the temperature in the target space environment according to the real-time collected temperature and the temperature setting value.

6. The environmental control system based on air volume feedback according to claim 1, It is characterized in that In terms of feedback control of the fan according to the current required ventilation volume and the measured ventilation volume, the controller is specifically used to: Calculate the current fan control voltage based on the relationship between the current required ventilation volume, the measured ventilation volume and the fan control voltage; Determine whether the current fan control voltage is less than a first set voltage value, and output a first determination result; If the first judgment result is yes, the current valve plate opening voltage is calculated according to the relationship between the current required ventilation volume, the measured ventilation volume and the fan valve plate opening, and the current valve plate opening voltage is output to the fan valve plate; Determine whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and output a second judgment result; If the second judgment result is yes, it is determined that the target space environment is seriously insufficiently ventilated, the control valve plate opening voltage is increased by a second set voltage value, and a serious insufficient ventilation alarm is issued; If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time during which the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output a third judgment result; If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the control valve plate opening voltage is increased by a second set voltage value; If the third judgment result is output as no, then determine whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and output a fourth judgment result; If the fourth judgment result is yes, it is determined that the ventilation is excessive, and the control valve plate opening voltage is reduced by a second set voltage value; If the fourth judgment result is judged as no, then judging whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and outputting a fifth judgment result; If the fifth judgment result is yes, it is determined that the ventilation is normal; If the first judgment result is no, the current fan control voltage is output to the fan; Determine whether the time during which the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the first set proportional coefficient exceeds the set time, and output a second judgment result; If the second judgment result is yes, it is determined that the target space environment is seriously insufficiently ventilated, the current fan control voltage is controlled to increase by a second set voltage value, and a serious insufficient ventilation alarm is issued; If the second judgment result is no, then determine whether the product of the current required ventilation volume and the second set proportional coefficient is less than the measured ventilation volume, and whether the time during which the measured ventilation volume is less than the product of the current required ventilation volume and the third set proportional coefficient exceeds the set time, and output a third judgment result; If the third judgment result is output as yes, it is determined that the ventilation is insufficient, and the current fan control voltage is controlled to increase the second set voltage value; If the third judgment result is output as no, then determine whether the time during which the measured ventilation volume is greater than the product of the current required ventilation volume and the fourth set proportional coefficient exceeds the set time, and output a fourth judgment result; If the fourth judgment result is yes, it is determined that the ventilation is excessive, and the current fan control voltage is controlled to reduce the second set voltage value; If the fourth judgment result is judged as no, then judging whether the product of the current required ventilation volume and the third set proportional coefficient is less than or equal to the measured ventilation volume, and whether the measured ventilation volume is less than or equal to the product of the current required ventilation volume and the fourth set proportional coefficient, and outputting a fifth judgment result; If the fifth judgment result is yes, it is determined that the ventilation is normal.

7. The environmental control system based on air volume feedback according to claim 1, It is characterized in that The controller is also used to issue a fan performance degradation alarm message if the absolute value of the difference between the current required ventilation volume and the actual measured ventilation volume exceeds a set value.

8. The environmental control system based on wind volume feedback according to claim 1, It is characterized in that The air volume feedback-based environmental control system also includes a cloud platform, which is connected to the controller and is used to remotely monitor the environmental parameters and measured ventilation volume collected in real time in the target space environment.

9. The environmental control system based on wind volume feedback according to claim 1, It is characterized in that The fan is a centrifugal fan.

10. An environmental control method based on air volume feedback, It is characterized in that The environmental control method based on wind volume feedback applies the environmental control system based on wind volume feedback according to any one of claims 1 to 9, and the environmental control method based on wind volume feedback includes: The unit air valve detects the measured ventilation volume of the target space environment in real time, and the environmental parameter acquisition module acquires the environmental parameters of the target space environment in real time; The controller determines the current required ventilation volume based on the relationship between the real-time collected environmental parameters and the ventilation volume, and performs feedback control on the fan based on the current required ventilation volume and the measured ventilation volume.

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