CN117608345B - Constant temperature and humidity controller control method based on projector working environment - Google Patents
Constant temperature and humidity controller control method based on projector working environment Download PDFInfo
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- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D27/00—Simultaneous control of variables covered by two or more of main groups G05D1/00 - G05D25/00
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Abstract
The invention discloses a control method of a constant temperature and humidity controller based on a working environment of a projector, which relates to the technical field of constant temperature and humidity control and comprises the following steps: acquiring the real-time environment temperature and the real-time environment humidity of the projector when the projector works; establishing a humidity change model and a temperature dissipation model; judging whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowable floating value, if so, not performing any treatment, and if not, performing constant humidity operation; judging whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowable floating value, if so, not performing any treatment, and if not, performing constant-temperature operation; establishing an influence model of cooling on humidity; and after the constant temperature operation, performing constant humidity compensation operation. The fresh air humidity at the preset wind speed is calculated through setting, the temperature and the humidity can be adjusted simultaneously, the waiting time is saved, and the adjusted reaction speed can be improved.
Description
Technical Field
The invention relates to the technical field of constant temperature and humidity control, in particular to a constant temperature and humidity controller control method based on a working environment of a projector.
Background
A projector, also called projector, is a device capable of projecting images or videos onto a curtain, and playing corresponding video signals by connecting different interfaces with a computer, a VCD game machine, a DV, etc. Projectors are widely used in homes, offices, schools, and recreational areas. When the projector is used, a large amount of heat can be generated, so that the temperature and the humidity inside the projector change, and the projector cannot maintain constant humidity and temperature for operation. Therefore, constant temperature and humidity control is required for the projector.
Because relative humidity and temperature have very big relevance, under the condition that the humidity of box has not stabilized, relative temperature's adjustment is the unable state always, can't accurately judge current relative temperature, need go to adjust relative temperature after humidity stabilizes, consequently, adjust latency is long, adjust reaction rate and wait to promote, in addition, because humidity and temperature exist the relevance, therefore, when adjusting humidity and temperature, all can influence temperature and humidity, the prior art lacks the compensation adjustment to humidity and temperature, leads to the adjustment to appear the error.
Disclosure of Invention
In order to solve the technical problems, the technical scheme provides a constant temperature and humidity controller control method based on a working environment of a projector, which solves the problems that the relative humidity and the temperature are greatly related, the relative temperature is always adjusted under the condition that the humidity of a box body is not stabilized, the state cannot be determined, the current relative temperature cannot be accurately judged, the relative temperature needs to be adjusted after the humidity is stabilized, the adjustment waiting time is long, the reaction speed needs to be improved, and in addition, the humidity and the temperature are related, the temperature and the humidity are influenced when being adjusted, and the adjustment error occurs due to the fact that the prior art lacks of compensating adjustment of the humidity and the temperature.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a constant temperature and humidity controller control method based on a projector working environment comprises the following steps:
acquiring the humidity and temperature requirements of the working environment of the projector, acquiring a humidity reference value and a temperature reference value, and acquiring a humidity allowed floating value and a temperature allowed floating value of the working environment of the projector;
acquiring the real-time environment temperature and the real-time environment humidity of the projector when the projector works;
establishing a humidity change model and a temperature dissipation model;
judging whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time humidity dissipation speed, calculating to obtain the fresh air humidity under the preset wind speed according to a humidity change model, and performing constant humidity operation on the projector working environment by using the fresh air humidity and the preset wind speed;
judging whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time rising speed of the temperature, calculating to obtain the fresh air temperature at the preset wind speed according to the temperature loss model, and performing constant-temperature operation on the working environment of the projector by using the fresh air temperature and the preset wind speed;
establishing an influence model of cooling on humidity;
if the constant temperature operation is not performed, the humidity compensation is not performed, if the constant temperature operation is performed, after the constant temperature operation, a compensation value for the humidity is obtained according to an influence model of temperature reduction on the humidity, after the compensation value for the humidity is subtracted from the fresh air humidity, the updated fresh air humidity is obtained, and the constant humidity compensation operation is performed on the working environment of the projector according to the updated fresh air humidity and a preset wind speed.
Preferably, the humidity change model establishment includes the following steps:
acquiring an environment temperature range of a projector during working, and equally dividing the environment temperature range to obtain at least one temperature test point;
heating air by using a temperature value of a temperature test point, obtaining initial humidity of the air, obtaining heating time length, and obtaining final humidity of the heated air;
according to the final humidity of the air, the initial humidity of the air and the heating time, calculating the humidity loss speed;
corresponding the temperature value of the temperature test point to the humidity dissipation speed, and fitting to obtain a humidity dissipation fitting function;
acquiring a fresh air humidity range, and equally dividing the fresh air humidity range to obtain at least one humidity test point;
humidifying the air by using the humidity value of the humidity test point to obtain a temperature change value of the air after humidification;
the humidity value of the humidity test point corresponds to the temperature change value of the air, and a humidity influence fitting function is obtained through fitting;
and taking the humidity loss fitting function and the humidity influence fitting function as humidity change models.
Preferably, the establishing the temperature loss model includes the following steps:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point, obtaining the initial temperature of the air, obtaining the cooling time length, and obtaining the final temperature of the cooled air;
according to the initial temperature of the air, the final temperature of the air and the cooling time, calculating to obtain the temperature falling speed;
and (3) corresponding the temperature value of the fresh air temperature point to the temperature falling speed, and fitting to obtain a temperature loss fitting function.
Preferably, the acquiring the real-time humidity dissipation speed includes the following steps:
substituting the real-time environment temperature of the projector in operation into the humidity dissipation fitting function to obtain the real-time humidity dissipation speed.
Preferably, the calculating the fresh air humidity at the preset wind speed according to the humidity change model includes the following steps:
acquiring the real-time environment humidity of the projector during working;
multiplying the real-time humidity dissipation speed by a preset time to obtain a humidity dissipation value after the preset time;
subtracting the humidity loss value from the real-time environment humidity to obtain the environment predicted humidity after the preset time;
subtracting the environment prediction humidity from the humidity reference value to obtain the static fresh air humidity under the static air condition;
acquiring the air volume in the working environment of the projector;
according to the preset wind speed, calculating to obtain the fresh air volume in the preset time;
the value obtained by multiplying the static fresh air humidity by the air volume is divided by the fresh air volume to obtain the fresh air humidity.
Preferably, the real-time rising speed of the acquired temperature includes the steps of:
acquiring the past environment temperature of the working environment of the projector before the preset time, and acquiring the real-time environment temperature of the projector during working;
dividing the difference between the real-time ambient temperature and the past ambient temperature by the preset time to obtain the real-time rising speed of the temperature.
Preferably, the calculating the fresh air temperature at the preset wind speed according to the temperature loss model includes the following steps:
substituting the fresh air humidity into a humidity influence fitting function to obtain a temperature influence value of the humidity on the real-time environment temperature;
subtracting the temperature influence value from the real-time environment temperature to obtain an environment correction temperature;
substituting the real-time rising speed of the temperature into a temperature dissipation fitting function, and reversely solving to obtain the prepared fresh air temperature;
subtracting the temperature reference value from the environment correction temperature to obtain a fresh air temperature offset value;
and subtracting the fresh air temperature offset value from the prepared fresh air temperature to obtain the fresh air temperature.
Preferably, the establishing the influence model of the cooling on the humidity comprises the following steps:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point to obtain the humidity change value of the air after cooling;
and (3) corresponding the temperature value of the fresh air temperature point to the humidity change value of the air, and fitting to obtain a temperature influence fitting function.
Preferably, the obtaining the compensation value for the humidity according to the influence model of the temperature reduction on the humidity includes the following steps:
subtracting the environment correction temperature from the fresh air temperature to obtain a change value of cooling;
substituting the cooled change value into a temperature influence fitting function to obtain a humidity compensation value;
and reducing the humidity compensation value of the fresh air humidity, and replacing the original fresh air humidity with the compensated fresh air humidity to perform constant humidity operation.
Compared with the prior art, the invention has the beneficial effects that:
the fresh air humidity under the preset wind speed is calculated through setting calculation, the fresh air temperature under the preset wind speed is calculated, the influence of the fresh air humidity on the temperature is considered when the fresh air temperature is calculated, the temperature is corrected, the influence model of cooling on the humidity is combined, the humidity is compensated, constant-humidity operation is carried out on the compensated fresh air humidity, the influence of the mutual interference of temperature and humidity adjustment in the adjustment process is avoided, and because the parameters of the whole process are all calculated by various model predictions, the temperature adjustment is carried out again without waiting for the completion of the humidity adjustment, the temperature and the humidity can be adjusted simultaneously, the waiting time is saved, and the reaction speed of adjustment can be improved.
Drawings
FIG. 1 is a schematic flow chart of a control method of a constant temperature and humidity controller based on a working environment of a projector;
FIG. 2 is a schematic flow chart of the humidity change model establishment in the present invention;
FIG. 3 is a schematic diagram of a flow chart for establishing a temperature loss model according to the present invention;
FIG. 4 is a schematic diagram of a fresh air humidity flow calculated at a preset wind speed according to a humidity change model of the present invention;
FIG. 5 is a flow chart of the real-time rise rate of the acquired temperature according to the present invention;
FIG. 6 is a schematic diagram of a fresh air temperature flow calculated at a preset wind speed according to a temperature loss model of the present invention;
FIG. 7 is a schematic flow chart of a process for establishing a model of the influence of cooling on humidity according to the present invention;
FIG. 8 is a flow chart of the method for obtaining the compensation value of the humidity according to the influence model of the temperature reduction on the humidity.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art.
Referring to fig. 1, a method for controlling a constant temperature and humidity controller based on a projector working environment includes:
acquiring the humidity and temperature requirements of the working environment of the projector, acquiring a humidity reference value and a temperature reference value, and acquiring a humidity allowed floating value and a temperature allowed floating value of the working environment of the projector;
acquiring the real-time environment temperature and the real-time environment humidity of the projector when the projector works;
establishing a humidity change model and a temperature dissipation model;
judging whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time humidity dissipation speed, calculating to obtain the fresh air humidity under the preset wind speed according to a humidity change model, and performing constant humidity operation on the projector working environment by using the fresh air humidity and the preset wind speed;
judging whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time rising speed of the temperature, calculating to obtain the fresh air temperature at the preset wind speed according to the temperature loss model, and performing constant-temperature operation on the working environment of the projector by using the fresh air temperature and the preset wind speed;
establishing an influence model of cooling on humidity;
if the constant temperature operation is not performed, the humidity compensation is not performed, if the constant temperature operation is performed, after the constant temperature operation, a compensation value for the humidity is obtained according to an influence model of temperature reduction on the humidity, after the compensation value for the humidity is subtracted from the fresh air humidity, the updated fresh air humidity is obtained, and the constant humidity compensation operation is performed on the working environment of the projector according to the updated fresh air humidity and a preset wind speed.
Referring to fig. 2, the humidity change model is constructed by the steps of:
acquiring an environment temperature range of a projector during working, and equally dividing the environment temperature range to obtain at least one temperature test point;
heating air by using a temperature value of a temperature test point, obtaining initial humidity of the air, obtaining heating time length, and obtaining final humidity of the heated air;
according to the final humidity of the air, the initial humidity of the air and the heating time, calculating the humidity loss speed;
corresponding the temperature value of the temperature test point to the humidity dissipation speed, and fitting to obtain a humidity dissipation fitting function;
acquiring a fresh air humidity range, and equally dividing the fresh air humidity range to obtain at least one humidity test point;
humidifying the air by using the humidity value of the humidity test point to obtain a temperature change value of the air after humidification;
the humidity value of the humidity test point corresponds to the temperature change value of the air, and a humidity influence fitting function is obtained through fitting;
taking the humidity loss fitting function and the humidity influence fitting function as humidity change models;
the humidity change model is used for predicting humidity dissipation speed at different temperatures, so that fresh air humidity for constant humidity operation can be determined according to the humidity dissipation speed;
and according to the humidity influence fitting function, the influence of the fresh air humidity on the temperature is obtained, and then the real-time environment temperature is corrected, so that the environment correction temperature after constant-humidity operation is obtained, and constant-temperature operation is carried out on the basis of the environment correction temperature.
Referring to fig. 3, the temperature loss model is built up by the steps of:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point, obtaining the initial temperature of the air, obtaining the cooling time length, and obtaining the final temperature of the cooled air;
according to the initial temperature of the air, the final temperature of the air and the cooling time, calculating to obtain the temperature falling speed;
the temperature value of the fresh air temperature point corresponds to the temperature falling speed, and a temperature loss fitting function is obtained through fitting;
the temperature loss model is used for calculating the temperature drop speed equal to the real-time rising speed according to the real-time rising speed, wherein the temperature drop speed is the temperature drop effect generated by the temperature of the air of the fresh air.
The method for acquiring the real-time loss speed of the humidity comprises the following steps of:
substituting the real-time environment temperature of the projector in operation into the humidity dissipation fitting function to obtain the real-time humidity dissipation speed.
Referring to fig. 4, according to the humidity variation model, the calculation of the fresh air humidity at the preset wind speed includes the following steps:
acquiring the real-time environment humidity of the projector during working;
multiplying the real-time humidity dissipation speed by a preset time to obtain a humidity dissipation value after the preset time;
subtracting the humidity loss value from the real-time environment humidity to obtain the environment predicted humidity after the preset time;
subtracting the environment prediction humidity from the humidity reference value to obtain the static fresh air humidity under the static air condition;
acquiring the air volume in the working environment of the projector;
according to the preset wind speed, calculating to obtain the fresh air volume in the preset time;
the value obtained by multiplying the static fresh air humidity by the air volume is divided by the fresh air volume to obtain the fresh air humidity;
in the scheme, the preset time is extremely small, and all parameters can be considered to be almost unchanged in the preset time;
when fresh air is supplied, air is non-stationary, so that the humidity is different from the stationary humidity, and under the condition that the humidity is kept unchanged, the air speed is higher, the humidity in the preset time is higher, so that the stationary fresh air humidity needs to be converted, the volume of air in the working environment needs to be increased in the preset time, the corresponding fresh air volume is the fresh air humidity, and the total humidity of the stationary fresh air humidity and the fresh air humidity is equal, so that the volume of the stationary fresh air humidity multiplied by the volume of the air is equal to the volume of the fresh air multiplied by the humidity of the fresh air, and the fresh air humidity can be obtained.
Referring to fig. 5, acquiring the real-time rising speed of the temperature includes the steps of:
acquiring the past environment temperature of the working environment of the projector before the preset time, and acquiring the real-time environment temperature of the projector during working;
dividing the difference between the real-time ambient temperature and the past ambient temperature by the preset time to obtain the real-time rising speed of the temperature.
Referring to fig. 6, according to the temperature loss model, the calculation of the fresh air temperature at the preset wind speed includes the following steps:
substituting the fresh air humidity into a humidity influence fitting function to obtain a temperature influence value of the humidity on the real-time environment temperature;
subtracting the temperature influence value from the real-time environment temperature to obtain an environment correction temperature;
substituting the real-time rising speed of the temperature into a temperature dissipation fitting function, and reversely solving to obtain the prepared fresh air temperature;
subtracting the temperature reference value from the environment correction temperature to obtain a fresh air temperature offset value;
subtracting a fresh air temperature offset value from the prepared fresh air temperature to obtain a fresh air temperature;
the fresh air temperature is reduced as follows: when the fresh air temperature is used for cooling, the fresh air temperature reduces the ambient correction temperature by the fresh air temperature offset value, the ambient correction temperature becomes a temperature reference value, the fresh air temperature is increased to become the prepared fresh air temperature, the prepared fresh air temperature is the temperature reversely solved by a temperature dissipation fitting function, the corresponding temperature dissipation speed is exactly the real-time rising speed of the temperature, and the heating speed of the projector is the real-time rising speed of the temperature, so that the two offset each other, the ambient temperature is changed to the temperature reference value, and meanwhile, the heating generated by the heating of the projector can be eliminated;
there will be some error in the actual adjustment, but the error is within the allowable temperature float.
Referring to fig. 7, the method for establishing the influence model of the temperature reduction on the humidity comprises the following steps:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point to obtain the humidity change value of the air after cooling;
and (3) corresponding the temperature value of the fresh air temperature point to the humidity change value of the air, and fitting to obtain a temperature influence fitting function.
Referring to fig. 8, according to the influence model of temperature reduction on humidity, the acquisition of the compensation value for humidity includes the following steps:
subtracting the environment correction temperature from the fresh air temperature to obtain a change value of cooling;
substituting the cooled change value into a temperature influence fitting function to obtain a humidity compensation value;
reducing the humidity compensation value of the fresh air humidity, and replacing the original fresh air humidity with the compensated fresh air humidity to perform constant humidity operation;
after the temperature is adjusted, the humidity is affected, and after the temperature is reduced, the humidity volatilizes slowly, so that the fresh air humidity needs to be reduced.
The constant temperature and humidity controller control system based on the working environment of the projector is used for realizing the constant temperature and humidity controller control method based on the working environment of the projector, and comprises the following steps:
the data acquisition module acquires a humidity reference value and a temperature reference value, acquires a humidity allowable floating value and a temperature allowable floating value of the working environment of the projector, acquires the real-time environment temperature of the projector during working, and acquires the real-time environment humidity of the projector during working;
the judging module judges whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowed floating value or not and judges whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowed floating value or not;
the model building module is used for building a humidity change model, a temperature dissipation model and a temperature reduction influence model;
the constant-humidity operation module performs constant-humidity operation on the working environment of the projector according to the fresh air humidity and the preset wind speed;
the constant-temperature operation module is used for carrying out constant-temperature operation on the working environment of the projector according to the fresh air temperature and the preset wind speed;
the calculating module calculates fresh air humidity at a preset wind speed, calculates fresh air temperature at the preset wind speed and acquires a compensation value for the humidity;
and the humidity compensation module performs constant humidity compensation operation on the working environment of the projector according to the updated fresh air humidity and the preset wind speed.
The working process of the constant temperature and humidity controller control system based on the working environment of the projector is as follows:
step one: the data acquisition module acquires the humidity and temperature requirements of the working environment of the projector, acquires a humidity reference value and a temperature reference value, and acquires a humidity allowed floating value and a temperature allowed floating value of the working environment of the projector;
step two: the data acquisition module acquires the real-time environment temperature of the projector during operation and acquires the real-time environment humidity of the projector during operation;
step three: the model building module builds a humidity change model and a temperature dissipation model;
step four: the judgment module judges whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowable floating value, if so, no processing is performed, if not, the real-time humidity dissipation speed is obtained, the fresh air humidity under the preset wind speed is calculated by the calculation module according to the humidity change model, and the constant humidity operation module performs constant humidity operation on the projector working environment according to the fresh air humidity and the preset wind speed;
step five: the judging module judges whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowable floating value, if so, no processing is performed, if not, the real-time rising speed of the temperature is obtained, the fresh air temperature under the preset wind speed is calculated by the calculating module according to the temperature dissipation model, and the constant-temperature operation module performs constant-temperature operation on the working environment of the projector according to the fresh air temperature and the preset wind speed;
step six: the model building module builds an influence model of cooling on humidity;
step seven: if the constant temperature operation is not performed, the humidity compensation is not performed, and if the constant temperature operation is performed, after the constant temperature operation, the calculation module obtains a compensation value for the humidity according to an influence model of temperature reduction on the humidity, the updated fresh air humidity is obtained after the compensation value for the humidity is subtracted from the fresh air humidity, and the humidity compensation module performs constant humidity compensation operation on the working environment of the projector according to the updated fresh air humidity and a preset wind speed.
Still further, the present solution also proposes a storage medium having a computer readable program stored thereon, the computer readable program when called executing the above-mentioned control method of the constant temperature and humidity controller based on the working environment of the projector.
It is understood that the storage medium may be a magnetic medium, e.g., floppy disk, hard disk, magnetic tape; optical media such as DVD; or a semiconductor medium such as a solid state disk SolidStateDisk, SSD, etc.
In summary, the invention has the advantages that: the fresh air humidity under the preset wind speed is calculated through setting calculation, the fresh air temperature under the preset wind speed is calculated, the influence of the fresh air humidity on the temperature is considered when the fresh air temperature is calculated, the temperature is corrected, the influence model of cooling on the humidity is combined, the humidity is compensated, constant-humidity operation is carried out on the compensated fresh air humidity, the influence of the mutual interference of temperature and humidity adjustment in the adjustment process is avoided, and because the parameters of the whole process are all calculated by various model predictions, the temperature adjustment is carried out again without waiting for the completion of the humidity adjustment, the temperature and the humidity can be adjusted simultaneously, the waiting time is saved, and the reaction speed of adjustment can be improved.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made therein without departing from the spirit and scope of the invention, which is defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (9)
1. A constant temperature and humidity controller control method based on a projector working environment is characterized by comprising the following steps:
acquiring the humidity and temperature requirements of the working environment of the projector, acquiring a humidity reference value and a temperature reference value, and acquiring a humidity allowed floating value and a temperature allowed floating value of the working environment of the projector;
acquiring the real-time environment temperature and the real-time environment humidity of the projector when the projector works;
establishing a humidity change model and a temperature dissipation model;
judging whether the difference between the real-time environment humidity and the humidity reference value does not exceed the humidity allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time humidity dissipation speed, calculating to obtain the fresh air humidity under the preset wind speed according to a humidity change model, and performing constant humidity operation on the projector working environment by using the fresh air humidity and the preset wind speed;
judging whether the difference between the real-time environment temperature and the temperature reference value does not exceed the temperature allowable floating value, if so, not performing any treatment, otherwise, acquiring the real-time rising speed of the temperature, calculating to obtain the fresh air temperature at the preset wind speed according to the temperature loss model, and performing constant-temperature operation on the working environment of the projector by using the fresh air temperature and the preset wind speed;
establishing an influence model of cooling on humidity;
if the constant temperature operation is not performed, the humidity compensation is not performed, if the constant temperature operation is performed, after the constant temperature operation, a compensation value for the humidity is obtained according to an influence model of temperature reduction on the humidity, after the compensation value for the humidity is subtracted from the fresh air humidity, the updated fresh air humidity is obtained, and the constant humidity compensation operation is performed on the working environment of the projector according to the updated fresh air humidity and a preset wind speed.
2. The method for controlling a constant temperature and humidity controller based on a projector working environment according to claim 1, wherein the establishing a humidity change model comprises the steps of:
acquiring an environment temperature range of a projector during working, and equally dividing the environment temperature range to obtain at least one temperature test point;
heating air by using a temperature value of a temperature test point, obtaining initial humidity of the air, obtaining heating time length, and obtaining final humidity of the heated air;
according to the final humidity of the air, the initial humidity of the air and the heating time, calculating the humidity loss speed;
corresponding the temperature value of the temperature test point to the humidity dissipation speed, and fitting to obtain a humidity dissipation fitting function;
acquiring a fresh air humidity range, and equally dividing the fresh air humidity range to obtain at least one humidity test point;
humidifying the air by using the humidity value of the humidity test point to obtain a temperature change value of the air after humidification;
the humidity value of the humidity test point corresponds to the temperature change value of the air, and a humidity influence fitting function is obtained through fitting;
and taking the humidity loss fitting function and the humidity influence fitting function as humidity change models.
3. The method for controlling a constant temperature and humidity controller based on a working environment of a projector according to claim 2, wherein the step of establishing a temperature loss model comprises the steps of:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point, obtaining the initial temperature of the air, obtaining the cooling time length, and obtaining the final temperature of the cooled air;
according to the initial temperature of the air, the final temperature of the air and the cooling time, calculating to obtain the temperature falling speed;
and (3) corresponding the temperature value of the fresh air temperature point to the temperature falling speed, and fitting to obtain a temperature loss fitting function.
4. A method for controlling a constant temperature and humidity controller based on a projector working environment according to claim 3, wherein the acquiring the real-time dissipation speed of the humidity comprises the steps of:
substituting the real-time environment temperature of the projector in operation into the humidity dissipation fitting function to obtain the real-time humidity dissipation speed.
5. The method for controlling a constant temperature and humidity controller based on a working environment of a projector according to claim 4, wherein the calculating the fresh air humidity at the preset wind speed according to the humidity variation model comprises the following steps:
acquiring the real-time environment humidity of the projector during working;
multiplying the real-time humidity dissipation speed by a preset time to obtain a humidity dissipation value after the preset time;
subtracting the humidity loss value from the real-time environment humidity to obtain the environment predicted humidity after the preset time;
subtracting the environment prediction humidity from the humidity reference value to obtain the static fresh air humidity under the static air condition;
acquiring the air volume in the working environment of the projector;
according to the preset wind speed, calculating to obtain the fresh air volume in the preset time;
the value obtained by multiplying the static fresh air humidity by the air volume is divided by the fresh air volume to obtain the fresh air humidity.
6. The method for controlling a constant temperature and humidity controller based on a projector operation environment according to claim 5, wherein the real-time rising speed of the acquired temperature comprises the steps of:
acquiring the past environment temperature of the working environment of the projector before the preset time, and acquiring the real-time environment temperature of the projector during working;
dividing the difference between the real-time ambient temperature and the past ambient temperature by the preset time to obtain the real-time rising speed of the temperature.
7. The method for controlling a constant temperature and humidity controller based on a working environment of a projector according to claim 6, wherein the calculating the fresh air temperature at the preset wind speed according to the temperature loss model comprises the following steps:
substituting the fresh air humidity into a humidity influence fitting function to obtain a temperature influence value of the humidity on the real-time environment temperature;
subtracting the temperature influence value from the real-time environment temperature to obtain an environment correction temperature;
substituting the real-time rising speed of the temperature into a temperature dissipation fitting function, and reversely solving to obtain the prepared fresh air temperature;
subtracting the temperature reference value from the environment correction temperature to obtain a fresh air temperature offset value;
and subtracting the fresh air temperature offset value from the prepared fresh air temperature to obtain the fresh air temperature.
8. The method for controlling a constant temperature and humidity controller based on a working environment of a projector according to claim 7, wherein the step of establishing a model of the influence of the temperature reduction on the humidity comprises the steps of:
acquiring a fresh air temperature range when the projector works, and equally dividing the fresh air temperature range to obtain at least one fresh air temperature point;
cooling the air by using the temperature value of the fresh air temperature point to obtain the humidity change value of the air after cooling;
and (3) corresponding the temperature value of the fresh air temperature point to the humidity change value of the air, and fitting to obtain a temperature influence fitting function.
9. The method for controlling a constant temperature and humidity controller based on a working environment of a projector according to claim 8, wherein the step of obtaining the compensation value for humidity according to the model of the influence of the temperature reduction on the humidity comprises the steps of:
subtracting the environment correction temperature from the fresh air temperature to obtain a change value of cooling;
substituting the cooled change value into a temperature influence fitting function to obtain a humidity compensation value;
and reducing the humidity compensation value of the fresh air humidity, and replacing the original fresh air humidity with the compensated fresh air humidity to perform constant humidity operation.
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