Factory automatic ventilation equipment and control method

Abstract

The invention discloses factory automatic ventilation equipment and a control method. The factory automatic ventilation equipment comprises a monitoring system and a ventilation system. The monitoring system comprises a plurality of environment sensors distributed in a workshop and used for acquiring distribution data of harmful gas in the workshop; the data acquisition module is connected with each environment sensor and is used for collecting data from the environment sensors and transmitting the data to the ventilation system; the ventilation system comprises an air supply assembly, an air exhaust assembly and a PLC control subsystem. Through cooperative use of the monitoring system and the ventilation system, implementation of various ventilation schemes and an airflow mode formed in the workshop are simulated according to distribution of harmful gas in the workshop, and the ventilation effect of the ventilation schemes is comprehensively evaluated according to the simulated airflow mode. The ventilation scheme with the optimal ventilation effect is selected to generate a PLC control instruction to control the air supply assembly and the air exhaust assembly, excellent ventilation in the workshop is achieved, the effects of low energy consumption and low harmful gas dissipation are achieved, and the body health of workers is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of automation technology, and in particular to factory automation ventilation equipment and a control method. Background Art

[0002] The production process in industrial workshops often emits a large amount of high-concentration pollutant gas and heat, which often leads to serious excess of pollutant content in the production workshop, causing harm to human health. For example, the paint shop uses toluene as a paint thinner, resulting in a toluene concentration of 129.1 mg / m 3 , which is 2.6 times the permissible limit for occupational health. In addition, among the more than 300 harmful gases involved in industrial production processes, more than 90% of the polluted gases have a density greater than that of air at normal temperature and pressure, and a large density range, with the maximum relative density reaching 12.1, all of which are high-density gases.

[0003] Due to the density effect of high-density gases, they tend to settle downwards and enter the breathing zone of personnel in the lower part of the workshop, posing serious threats and hazards to the health of personnel and the safe operation of process equipment.

[0004] The existing ventilation equipment in the factory often only dilutes the harmful gases in the workshop, or discharges the harmful gases at a fixed point. It cannot quickly and completely discharge the harmful gases, and the technicians will still breathe the harmful gases.

[0005] Therefore, it is necessary to provide a factory automation ventilation equipment and a control method to solve the above technical problems. Summary of the invention

[0006] The present invention overcomes the deficiencies of the prior art and provides a factory automation ventilation device and a control method.

[0007] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: a factory automation ventilation equipment, including: a monitoring system and a ventilation system;

[0008] The monitoring system comprises:

[0009] Several environmental sensors distributed in the workshop are used to obtain the distribution data of harmful gases in the workshop;

[0010] A data acquisition module, connected to each of the environmental sensors, for collecting data from the environmental sensors and transmitting the data to the ventilation system;

[0011] The ventilation system includes: an air supply component, an air exhaust component and a PLC control subsystem;

[0012] The PLC control subsystem includes:

[0013] A simulation module receives the harmful gas distribution data from the monitoring system and constructs a workshop ventilation virtual model;

[0014] An analysis module, simulating several ventilation schemes in the workshop ventilation virtual model according to the distribution of harmful gases, and evaluating the ventilation effects of the ventilation schemes;

[0015] The control module is used to apply the ventilation scheme with the best ventilation effect evaluation to the control of the air supply component and the exhaust component.

[0016] In a preferred embodiment of the present invention, the distribution data includes: spatial distribution, concentration and temperature of the harmful gas.

[0017] In a preferred embodiment of the present invention, the environmental sensor comprises: a temperature monitoring unit, a harmful gas concentration monitoring unit and an infrared scanning unit;

[0018] The infrared scanning unit is used to obtain the position and volume image of harmful gases in the workshop.

[0019] In a preferred embodiment of the present invention, the air supply assembly is used to supply air into a workshop, and comprises: a plurality of air outlets, and an air blower disposed in the air outlets, wherein the air blower can adjust the angle and wind speed;

[0020] The exhaust assembly exhausts the gas in the workshop, and includes: a plurality of exhaust ports, and an exhaust fan arranged in the exhaust ports, and the exhaust fan has an adjustable wind speed.

[0021] In a preferred embodiment of the present invention, the construction of the workshop ventilation virtual model includes:

[0022] According to the workshop structure design, the specific location distribution of the air supply components, the exhaust components and the equipment, a geometric model of the workshop is constructed in the fluid simulation software;

[0023] Describing the air flow behavior in the geometric model based on computational fluid dynamics technology, and initializing the velocity field according to the working parameters of the air supply component and the exhaust component;

[0024] The harmful gas distribution data acquired by the monitoring system is mapped into the geometric model, and the concentration of the harmful gas in the local area is adjusted according to the emission rate of the harmful gas to obtain a virtual model of workshop ventilation.

[0025] In a preferred embodiment of the present invention, the analysis module includes:

[0026] The solution library contains several basic ventilation solutions preset based on prior experience;

[0027] The simulation unit matches the corresponding basic ventilation scheme according to the distribution of harmful gases in the workshop ventilation virtual model, fine-tunes the basic ventilation scheme to obtain several simulated ventilation schemes, applies each of the simulated ventilation schemes to the workshop ventilation virtual model, and evaluates the ventilation effect of each of the simulated ventilation schemes.

[0028] In a preferred embodiment of the present invention, the evaluation of the ventilation effect is specifically: evaluating the key performance indicators of each of the simulated ventilation schemes, including: energy consumption, proportion of harmful gas escape, and degree of improvement in air quality.

[0029] A control method for factory automation ventilation equipment, using any factory automation ventilation equipment described in any one of the above, comprises the following steps:

[0030] S1. Build a virtual model of the workshop;

[0031] S2. Use the monitoring system to obtain the distribution data of harmful gases in the workshop;

[0032] S3, mapping the harmful gas distribution data obtained in S2 to the workshop virtual model to construct a workshop ventilation virtual model;

[0033] S4. Simulating several ventilation schemes in the workshop ventilation virtual model, and evaluating the ventilation effects of the ventilation schemes;

[0034] S5. Apply the ventilation scheme with the best ventilation effect evaluation to the control of air supply components and exhaust components.

[0035] In a preferred embodiment of the present invention, the construction of the virtual model of the workshop is specifically: according to the specific location distribution of the workshop structure design, air supply components, exhaust components and equipment, a geometric model of the workshop is constructed in the fluid simulation software.

[0036] In a preferred embodiment of the present invention, in S4, the evaluation of the ventilation effect includes:

[0037] Energy consumption is calculated based on the power factors of the air supply and exhaust components in the simulated ventilation scheme, as well as the operating time;

[0038] The proportion of harmful gas escape is obtained by calculating the concentration and volume of harmful gases invading the working area of ​​personnel after implementing the simulated ventilation plan;

[0039] The degree of improvement in air quality, after a certain period of time, is to compare the differences in air quality data before and after the implementation of the simulated ventilation scheme, including: temperature and concentration of harmful gases;

[0040] The scoring indexes of energy consumption, percentage of harmful gas escape, and degree of air quality improvement are summarized to obtain a comprehensive score for ventilation effect.

[0041] The present invention solves the defects existing in the background technology and has the following beneficial effects:

[0042] (1) The present invention provides a factory automation ventilation device. By using a monitoring system and a ventilation system in coordination, the implementation of various ventilation schemes is simulated according to the distribution of harmful gases in the workshop, and the airflow pattern formed in the workshop is formed. The ventilation effect of the ventilation scheme is comprehensively evaluated according to the simulated airflow pattern, and the ventilation scheme with the best ventilation effect is selected to generate PLC control instructions to control the air supply components and the exhaust components, so as to achieve excellent ventilation in the workshop, achieve the effect of low energy consumption and low harmful gas emission, and ensure the health of the staff.

[0043] (2) In the present invention, when evaluating the ventilation scheme, an evaluation of the proportion of harmful gas escape is introduced. After calculating and implementing the simulated ventilation scheme, the concentration and volume of harmful gases invading the working area of ​​​​the personnel are obtained. The lower the proportion of harmful gas escape, it means that in the simulated ventilation scheme, the coordination of the air supply component and the exhaust component forms a multi-directional enveloping airflow, which envelops the harmful gases in the workshop and guides them to the exhaust port for directional discharge, thereby reducing the diffusion of harmful gases and their heat.

[0044] (3) In the present invention, when evaluating the ventilation effect, energy consumption, the proportion of harmful gas escape and the degree of improvement in air quality are considered respectively, and a weighted summary is performed to obtain a comprehensive score. The larger the value of the comprehensive score, the better the ventilation effect, which can ensure that the ventilation scheme has low energy consumption, low proportion of harmful gas escape and high degree of improvement in air quality. By setting the comprehensive evaluation, the consistency and intuitiveness of the scoring system are ensured, making the goal of optimizing the ventilation scheme clearer and easier to achieve. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work.

[0046] Figure 1 is a structural diagram of a ventilation system according to a preferred embodiment of the present invention;

[0047] Figure 2 2 is a diagram of a control method for a ventilation device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0048] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein. Therefore, the protection scope of the present invention is not limited to the specific embodiments disclosed below.

[0050] like Figure 1 As shown, the present invention provides a factory automation ventilation device, including: a monitoring system and a ventilation system.

[0051] The monitoring system in this embodiment includes: a number of environmental sensors distributed in the workshop to obtain the distribution data of harmful gases in the workshop, the distribution data including: the spatial distribution, concentration and temperature of the harmful gases; a data acquisition module connected to each of the environmental sensors to collect data from the environmental sensors and transmit it to the ventilation system.

[0052] Furthermore, a number of environmental sensors are arranged in a grid pattern or based on the location of key pollution sources in the workshop to cover the entire working area in the workshop. The environmental sensors include: temperature monitoring unit, harmful gas concentration monitoring unit and infrared scanning unit. Among them, the harmful gas concentration monitoring unit is selected according to the actual harmful gas emissions in the workshop. For example, the toluene gas concentration monitoring unit is required in the paint shop. The infrared scanning unit is used to obtain the location of specific gases in the workshop, such as toluene gas, and preferably uses a wavelength of about 2990cm - 1 infrared scanning instrument to obtain the position and volume image of toluene gas.

[0053] The data acquisition module provides standardized interfaces such as Modbus RTU / ASCII / TCP, CANopen, etc., which are connected to various environmental sensors; and supports wired (such as RS485) or wireless (such as Wi-Fi, ZigBee, LoRaWAN) communication methods to send the collected data to the ventilation system.

[0054] The ventilation system in this embodiment includes: an air supply component, an air exhaust component and a PLC control subsystem.

[0055] The air supply component is used to supply air into the workshop, including: a plurality of air supply outlets, and a blower arranged in the air supply outlets. The blower can adjust the angle and wind speed, and adjust the airflow direction and intensity according to the instructions of the PLC control subsystem.

[0056] Furthermore, a plurality of air outlets are arranged in a grid pattern or based on the location of key pollution sources in the workshop, covering the entire working area in the workshop. It is worth noting that the air outlets are away from the location where people operate the machines.

[0057] The exhaust assembly exhausts the gas in the workshop, including harmful gas. The exhaust assembly includes: a plurality of exhaust ports, and an exhaust fan arranged in the exhaust ports. The exhaust fan can adjust the wind speed and adjust the intensity of the exhaust air flow according to the quality of the PLC control subsystem.

[0058] Furthermore, a plurality of exhaust vents are arranged in a grid pattern or based on the location of key pollution sources in the workshop, covering the entire working area in the workshop. It is worth noting that the exhaust vents are far away from the position where personnel operate the machine.

[0059] The PLC control subsystem in this embodiment includes: a simulation module, which receives data from the monitoring system and constructs a virtual model of workshop ventilation; an analysis module, which simulates several ventilation schemes in the virtual model of workshop ventilation according to the distribution of harmful gases, and analyzes the ventilation effects that can be achieved by several ventilation schemes; and a control module, which applies ventilation schemes with low energy consumption and low dissipation ratio to the control of air supply components and exhaust components.

[0060] Specifically, the construction of the workshop ventilation virtual model includes the following steps:

[0061] 1) According to the workshop structure design, the specific location distribution of air supply components, exhaust components and equipment, a geometric model of the workshop is constructed in a fluid simulation software; wherein the fluid simulation software includes but is not limited to tools such as Fluent, OpenFOAM, FLOW-3D or waves2Foam, preferably Fluent. When constructing the geometric model, it is necessary to determine the number, location and size of the air supply and exhaust vents in the workshop, as well as the type and performance parameters of the fan.

[0062] 2) Based on computational fluid dynamics (CFD) technology, the air flow behavior in the geometric model, namely the wind field, is described, and the velocity field is initialized according to the working parameters of the supply fan and exhaust fan to ensure that it is consistent with the actual situation.

[0063] 3) The harmful gas distribution data obtained by the monitoring system is mapped into the geometric model, and the harmful gas concentration in the local area is adjusted according to the emission rate of the harmful gas to obtain a virtual model of workshop ventilation.

[0064] Furthermore, in the virtual model of workshop ventilation, red is used to indicate harmful gases and blue is used to indicate safe gases, and the depth of color is used to visually display the gas concentration.

[0065] Through the above steps, a workshop ventilation virtual model that maps the gas distribution in the workshop can be obtained, which reflects the gas distribution in the workshop in real time. Furthermore, different ventilation schemes are simulated in the workshop ventilation virtual model to predict the ventilation effects that can be achieved, so as to adapt to the optimal ventilation scheme for different harmful gas distributions, so as to achieve the effects of low energy consumption and low harmful gas emission, and ensure the health of the workers.

[0066] The analysis module in this embodiment includes:

[0067] The solution library contains several basic ventilation solutions preset based on prior experience. Each basic ventilation solution includes: the number, position, airflow angle and wind speed setting value of the supply and exhaust fans that are turned on. Each basic ventilation solution targets the distribution of one or more harmful gases.

[0068] The simulation unit matches the corresponding basic ventilation scheme according to the distribution of harmful gases in the workshop ventilation virtual model, and fine-tunes the basic ventilation scheme to obtain several simulated ventilation schemes, each of which is different, but the difference with the basic ventilation scheme is within 5% to 10%. Then, each simulated ventilation scheme is applied to the workshop ventilation virtual model, and the ventilation effect of each simulated ventilation scheme is evaluated.

[0069] The production of several simulated ventilation plans adopts the random sampling method, and each item of the basic ventilation plan is slightly adjusted to generate several different simulated ventilation plans. The difference between each simulated ventilation plan and the basic ventilation plan is maintained within 5% to 10%.

[0070] The evaluation of ventilation effect is as follows:

[0071] The key performance indicators for evaluating each simulated ventilation scheme include: energy consumption, percentage of harmful gas escape, and degree of improvement in air quality. Specifically:

[0072] Energy consumption is calculated based on the power factors of the supply and exhaust components in the simulated ventilation scheme and the operating time.

[0073] The percentage of harmful gas escape is obtained by calculating the concentration and volume of harmful gases invading the working area after implementing the simulated ventilation plan.

[0074] The degree of improvement in air quality, after a certain period of time, compares the differences in air quality data before and after the implementation of the simulated ventilation plan, including: temperature and concentration of harmful gases.

[0075] Furthermore, the performance of the above key performance indicators is summarized to obtain a comprehensive score of the ventilation effect:

[0076] V=w1×E+w2×(1-D)+w3×Q

[0077] Among them, V represents the comprehensive ventilation effect score, E is the energy consumption score, the lower the better, and the value range is [0,1], where 0 represents the highest energy consumption and 1 represents the lowest energy consumption.

[0078] D is the proportion of harmful gas escape, the lower the better, and the value range is [0,1], where 0 means no escape and 1 means complete escape.

[0079] Q is the air quality improvement score, the higher the better, and the value range is [0,1], where 0 indicates no improvement and 1 indicates the greatest improvement.

[0080] w1, w2, and w3 are the weight coefficients of each indicator respectively, w1+w2+w3=1. The weights can be adjusted according to actual needs to reflect the priorities of different aspects.

[0081] It is worth noting that the lower the proportion of harmful gas escape, it shows that in the simulated ventilation scheme, the cooperation of the air supply component and the exhaust component forms a multi-directional enveloping airflow, which wraps up the harmful gas in the workshop and guides it to the exhaust port for directional discharge, reducing the diffusion of harmful gases and their heat.

[0082] Thus, the comprehensive score V of the ventilation effect is obtained. The larger the value of V, the better the ventilation effect, that is, the lower the energy consumption, the lower the proportion of harmful gas escape, and the higher the degree of air quality improvement. The above steps ensure the consistency and intuitiveness of the scoring system, making the goal of optimizing the ventilation plan clearer and easier to achieve.

[0083] The control module generates specific control instructions based on the optimal simulated ventilation plan provided by the analysis module, and converts the abstract parameters in the simulation plan (such as the number of fans, positions, airflow angles, wind speed, etc.) into specific values ​​or states that can be understood by the PLC.

[0084] The present invention provides a factory automation ventilation device, which uses a monitoring system and a ventilation system in coordination, simulates the implementation of various ventilation schemes according to the distribution of harmful gases in a workshop, forms an airflow pattern in the workshop, and comprehensively evaluates the ventilation effects of the ventilation schemes according to the simulated airflow pattern. The ventilation scheme with the best ventilation effect is selected to generate a PLC control instruction to control the air supply component and the exhaust component, thereby achieving excellent ventilation in the workshop, achieving the effect of low energy consumption and low harmful gas emission, and ensuring the health of the staff.

[0085] Furthermore, the invention solves the problem of high energy consumption and harmful gas leakage caused by the fixed ventilation mode in the prior art. This is because sometimes only some machines are running in the workshop, but the ventilation plan is set for all machines, which will cause waste of resources and increase production costs.

[0086] like Figure 2 As shown, the present invention also provides a control method for factory automation ventilation equipment, comprising the following steps:

[0087] S1. Build a virtual model of the workshop;

[0088] S2. Use the monitoring system to obtain the distribution data of harmful gases in the workshop;

[0089] S3, mapping the harmful gas distribution data obtained in S2 to the workshop virtual model, and constructing the workshop ventilation virtual model;

[0090] S4. Simulate several ventilation schemes in the workshop ventilation virtual model and evaluate the ventilation effects of the ventilation schemes;

[0091] S5. Apply the ventilation scheme with the best ventilation effect evaluation to the control of air supply components and exhaust components.

[0092] Furthermore, the construction of the virtual model of the workshop is specifically as follows: according to the specific location distribution of the workshop structure design, air supply components, exhaust components and equipment, a geometric model of the workshop is constructed in the fluid simulation software.

[0093] In step S4, the evaluation of ventilation effect includes:

[0094] Energy consumption is calculated based on the power factors of the air supply and exhaust components in the simulated ventilation scheme, as well as the operating time;

[0095] The proportion of harmful gas escape is obtained by calculating the concentration and volume of harmful gases invading the working area of ​​personnel after implementing the simulated ventilation plan;

[0096] The degree of improvement in air quality, after a certain period of time, is to compare the differences in air quality data before and after the implementation of the simulated ventilation scheme, including: temperature and concentration of harmful gases;

[0097] The energy consumption, percentage of harmful gas emissions, and air quality improvement score are summarized to obtain a comprehensive score for ventilation effect:

[0098] V=w1×E+w2×(1-D)+w3×Q

[0099] Among them, V represents the comprehensive ventilation effect score, E is the energy consumption score, the lower the better, and the value range is [0,1], where 0 represents the highest energy consumption and 1 represents the lowest energy consumption.

[0100] D is the proportion of harmful gas escape, the lower the better, and the value range is [0,1], where 0 means no escape and 1 means complete escape.

[0101] Q is the air quality improvement score, the higher the better, and the value range is [0,1], where 0 indicates no improvement and 1 indicates the greatest improvement.

[0102] w1, w2, and w3 are the weight coefficients of each indicator respectively, w1+w2+w3=1. The weights can be adjusted according to actual needs to reflect the priorities of different aspects.

[0103] The present invention can formulate a ventilation plan with low energy consumption, low harmful gas emission and high air quality improvement according to the real-time production status in the workshop, that is, the distribution of harmful gases obtained by the monitoring system, and realize automatic ventilation adjustment.

[0104] The above is based on the ideal embodiment of the present invention. Through the above description, relevant personnel can make various changes and modifications without departing from the technical concept of the present invention. The technical scope of the present invention is not limited to the content in the specification, and the technical scope must be determined according to the scope of the claims.

Claims

1. A factory automation ventilation device, comprising: Monitoring system and ventilation system, characterized by: The monitoring system comprises: Several environmental sensors distributed in the workshop are used to obtain the distribution data of harmful gases in the workshop; A data acquisition module, connected to each of the environmental sensors, for collecting data from the environmental sensors and transmitting the data to the ventilation system; The ventilation system includes: an air supply component, an air exhaust component and a PLC control subsystem; The PLC control subsystem includes: A simulation module receives the harmful gas distribution data from the monitoring system and constructs a workshop ventilation virtual model; An analysis module, simulating several ventilation schemes in the workshop ventilation virtual model according to the distribution of harmful gases, and evaluating the ventilation effects of the ventilation schemes; The control module is used to apply the ventilation scheme with the best ventilation effect evaluation to the control of the air supply component and the exhaust component.

2. A factory automation ventilation device according to claim 1, characterized in that: The distribution data include: spatial distribution, concentration and temperature of harmful gases.

3. The factory automation ventilation equipment according to claim 1, characterized in that: The environmental sensor includes: a temperature monitoring unit, a harmful gas concentration monitoring unit and an infrared scanning unit; The infrared scanning unit is used to obtain the position and volume image of harmful gases in the workshop.

4. The factory automation ventilation equipment according to claim 1, characterized in that: The air supply assembly is used to supply air into the workshop, and includes: a plurality of air outlets, and an air blower arranged in the air outlets, the air blower being capable of adjusting the angle and wind speed; The exhaust assembly exhausts the gas in the workshop, and includes: a plurality of exhaust ports, and an exhaust fan arranged in the exhaust ports, and the exhaust fan has an adjustable wind speed.

5. The factory automation ventilation equipment according to claim 1, characterized in that: The construction of the workshop ventilation virtual model includes: According to the workshop structure design, the specific location distribution of the air supply components, the exhaust components and the equipment, a geometric model of the workshop is constructed in the fluid simulation software; Describing the air flow behavior in the geometric model based on computational fluid dynamics technology, and initializing the velocity field according to the working parameters of the air supply component and the exhaust component; The harmful gas distribution data acquired by the monitoring system is mapped into the geometric model, and the concentration of the harmful gas in the local area is adjusted according to the emission rate of the harmful gas to obtain a virtual model of workshop ventilation.

6. The factory automation ventilation equipment according to claim 1, characterized in that: The analysis module comprises: The solution library contains several basic ventilation solutions preset based on prior experience; The simulation unit matches the corresponding basic ventilation scheme according to the distribution of harmful gases in the workshop ventilation virtual model, fine-tunes the basic ventilation scheme to obtain several simulated ventilation schemes, applies each of the simulated ventilation schemes to the workshop ventilation virtual model, and evaluates the ventilation effect of each of the simulated ventilation schemes.

7. The factory automation ventilation equipment according to claim 1, characterized in that: The evaluation of ventilation effect is specifically as follows: evaluating the key performance indicators of each simulated ventilation scheme, including: energy consumption, proportion of harmful gas escape, and degree of improvement in air quality.

8. A control method for factory automation ventilation equipment, based on the factory automation ventilation equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Build a virtual model of the workshop; S2. Use the monitoring system to obtain the distribution data of harmful gases in the workshop; S3, mapping the harmful gas distribution data obtained in S2 to the workshop virtual model to construct a workshop ventilation virtual model; S4. Simulating several ventilation schemes in the workshop ventilation virtual model, and evaluating the ventilation effects of the ventilation schemes; S5. Apply the ventilation scheme with the best ventilation effect evaluation to the control of air supply components and exhaust components.

9. A control method for factory automation ventilation equipment according to claim 8, characterized in that: The construction of the workshop virtual model specifically includes: constructing a geometric model of the workshop in fluid simulation software according to the workshop structure design, the specific location distribution of air supply components, exhaust components and equipment.

10. A control method for factory automation ventilation equipment according to claim 8, characterized in that: In S4, the evaluation of ventilation effect includes: Energy consumption is calculated based on the power factors of the air supply and exhaust components in the simulated ventilation scheme, as well as the operating time; The proportion of harmful gas escape is obtained by calculating the concentration and volume of harmful gases invading the working area of ​​personnel after implementing the simulated ventilation plan; The degree of improvement in air quality, after a certain period of time, is to compare the differences in air quality data before and after the implementation of the simulated ventilation scheme, including: temperature and concentration of harmful gases; The scoring indexes of energy consumption, percentage of harmful gas escape, and degree of air quality improvement are summarized to obtain a comprehensive score for ventilation effect.

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