CN114087711A - Method and device for predicting environment humidity and semiconductor dehumidifier - Google Patents

Method and device for predicting environment humidity and semiconductor dehumidifier Download PDF

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Publication number
CN114087711A
CN114087711A CN202111342584.7A CN202111342584A CN114087711A CN 114087711 A CN114087711 A CN 114087711A CN 202111342584 A CN202111342584 A CN 202111342584A CN 114087711 A CN114087711 A CN 114087711A
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humidity
temperature
semiconductor dehumidifier
cold
dehumidifier
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田涛
华洪香
亓军鹏
牛楠楠
张帅
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Gree Electric Appliances Inc of Zhuhai
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/50—Control or safety arrangements characterised by user interfaces or communication
    • F24F11/61—Control or safety arrangements characterised by user interfaces or communication using timers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00—Control or safety arrangements
    • F24F11/62—Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • F24F11/63—Electronic processing
    • F24F11/64—Electronic processing using pre-stored data
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00—Control inputs relating to air properties
    • F24F2110/10—Temperature

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  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
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Abstract

A method for predicting the ambient humidity of a semiconductor dehumidifier is provided, which comprises the following steps: s1: starting the semiconductor dehumidifier, determining the current environment temperature Tr by sampling the temperature of the cold end temperature sensing bulb of the semiconductor dehumidifier, and S2: starting a refrigerating sheet of the semiconductor dehumidifier to obtain a stable temperature value Tc of a cold-end temperature sensing bulb of the semiconductor dehumidifier; s3: according to N humidity curves RH pre-stored in the semiconductor dehumidifier system1～RHNObtaining N stable temperature values Tc corresponding to the cold ends of the refrigerating sheets according to the mapping relation with the front environment temperature Tr1～TcNAnd S4: by comparing Tc with Tc1～TcNTo predict the humidity of the current environment. According to the scheme of the invention, the half can be judgedThe humidity of the environment where the conductor dehumidifier is located can reduce the product development cost aiming at the product with low humidity display precision requirement.

Description

Method and device for predicting environment humidity and semiconductor dehumidifier
Technical Field
The invention relates to the field of intelligent control, in particular to a method and a device for predicting environment humidity and a semiconductor dehumidifier.
Background
In order to save cost to the maximum extent, the existing semiconductor dehumidifier is generally only provided with a cold-end temperature sensing bulb to detect whether a machine has abnormal high-temperature or low-temperature frosting during operation, and cannot detect the environmental humidity. There is a need in the art for a method of predicting ambient humidity from ambient temperature so as to be better able to accommodate product development.
The above information disclosed in the background section is only for further understanding of the background of the invention and therefore it may contain information that does not form the prior art that is already known to a person of ordinary skill in the art.
Disclosure of Invention
The invention provides a method and a device for predicting environment humidity and a semiconductor dehumidifier.
A first aspect of the invention provides a method of predicting ambient humidity, comprising: s1: after the semiconductor dehumidifier is started, the current environment temperature Tr is determined by sampling the temperature of the cold end temperature sensing bulb of the semiconductor dehumidifier, S2: after the refrigerating piece of the semiconductor dehumidifier is started, obtaining a stable temperature value Tc of a cold-end temperature sensing bulb of the semiconductor dehumidifier; s3: according to N humidity curves RH pre-stored in the semiconductor dehumidifier system1～RHNObtaining N stable temperature values Tc corresponding to the cold ends of the refrigerating sheets according to the mapping relation with the front environment temperature Tr1～TcNAnd S4: by comparing Tc with Tc1～TcNTo predict the humidity of the current environment.
According to an embodiment of the invention, the method according to claim 1, wherein in the step S1, after the semiconductor dehumidifier is turned on, and when the fan is running and the cooling fins are not running, the temperature of the cold-end thermal bulb of the semiconductor dehumidifier is taken as the current ambient temperature Tr after a first predetermined time period.
According to an embodiment of the invention, the method according to claim 1, wherein in the step S2, after the semiconductor dehumidifier cold end thermal bulb is started, after a second predetermined time period, the temperature of the semiconductor dehumidifier cold end thermal bulb is determined, and if the temperature change value of the semiconductor dehumidifier cold end thermal bulb is smaller than a preset threshold value in a third subsequent predetermined time period, the temperature of the semiconductor dehumidifier cold end thermal bulb determined after the second predetermined time period is taken as the Tc.
According to an embodiment of the invention, the method of claim 1 wherein in said step S4, if Tc is<Tc1Then the humidity of the current environment is predicted to be RH1(ii) a If Tc>TcNThe humidity of the current environment is predicted to be RHN(ii) a If Tcn-1<Tc<TcnThen the humidity of the current environment is predicted to be RHn-1+(Tc-Tcn-1)/(Tcn-Tcn-1)*(RHn-RHn-1) (ii) a Wherein 1 is<n<N。
According to one embodiment of the invention, among others, RH1Is the minimum humidity curve, RHNThe maximum humidity curve is selected as the lower limit and the upper limit of the environmental humidity in normal use.
According to one embodiment of the invention, the accuracy of the humidity prediction of the current environment is related to the number of pre-stored humidity curves in the semiconductor dehumidifier system.
According to one embodiment of the invention, under the fixed ambient humidity, a fitting curve of the current ambient temperature Tr and the stable temperature value Tc of the cold-end thermal bulb of the semiconductor dehumidifier is close to a first power line segment, which indicates that the result of predicting the ambient humidity is feasible.
A second aspect of the present invention provides an apparatus for predicting ambient humidity, comprising a memory and a processor; the memory is used for storing a computer program; the processor is configured to implement the above-mentioned method when executing the computer program.
A third aspect of the present invention provides a semiconductor dehumidifier, which employs the above method for predicting ambient humidity, or the above apparatus for predicting ambient humidity.
According to the scheme, the temperature data of the cold-end temperature sensing bulb is acquired in a time-sharing manner, the current environment humidity is obtained through calculation according to the humidity curve prestored in the chip, and the use range (such as humidity display, humidity control and the like) of the semiconductor dehumidifier can be expanded; by adopting the scheme of the invention, the humidity of the environment where the semiconductor dehumidifier is positioned can be judged, and the product development cost can be reduced aiming at the product with low humidity display precision requirement.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a graph of a fit of ambient temperature, cold end stable temperature, according to an exemplary embodiment of the present invention.
FIG. 2 is a flow chart of an exemplary method of predicting ambient humidity in accordance with the present invention.
FIG. 3 is a flowchart of an implementation of a scheme for predicting ambient humidity in accordance with an exemplary embodiment of the present invention.
FIG. 4 is a humidity curve diagram of a scheme for predicting ambient humidity in accordance with an exemplary embodiment of the present invention.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
As used herein, the terms "first," "second," and the like may be used to describe elements of exemplary embodiments of the invention. These terms are only used to distinguish one element from another element, and the inherent features or order of the corresponding elements and the like are not limited by the terms. Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms, such as those defined in commonly used dictionaries, are to be interpreted as having a meaning that is consistent with their context in the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
Those skilled in the art will understand that the devices and methods of the present invention described herein and illustrated in the accompanying drawings are non-limiting exemplary embodiments and that the scope of the present invention is defined solely by the claims. Features illustrated or described in connection with one exemplary embodiment may be combined with features of other embodiments. Such modifications and variations are intended to be included within the scope of the present invention.
Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, a detailed description of related known functions or configurations is omitted to avoid unnecessarily obscuring the technical points of the present invention. In addition, the same reference numerals refer to the same circuits, modules or units throughout the description, and repeated descriptions of the same circuits, modules or units are omitted for brevity.
Further, it should be understood that one or more of the following methods or aspects thereof may be performed by at least one control unit or controller. The terms "control unit," "controller," "control module," or "master module" may refer to a hardware device that includes a memory and a processor. The memory or computer-readable storage medium is configured to store program instructions, while the processor is specifically configured to execute the program instructions to perform one or more processes that will be described further below. Moreover, it is to be appreciated that the following methods may be performed by including a processor in conjunction with one or more other components, as will be appreciated by one of ordinary skill in the art.
According to the scheme, the cold-end temperature sensing bulb of the semiconductor dehumidifier is utilized, the environment temperature is collected when the semiconductor refrigeration piece does not work and is stored in the main control chip, after the semiconductor refrigeration piece works and the temperature of the cold-end temperature sensing bulb is stable, the previously stored environment temperature and the cold-end temperature after the refrigeration piece works stably are substituted into a humidity curve prestored in a program to be compared, if the environment temperature is close to the corresponding humidity curve after the environment temperature is equal to the working temperature of the refrigeration piece, the humidity of the environment where the semiconductor dehumidifier is located at the moment can be roughly judged, and products with low humidity display precision requirements can be obtained.
FIG. 1 is a graph of a fit of ambient temperature, cold end stable temperature, according to an exemplary embodiment of the present invention.
As shown in fig. 1, according to one or more embodiments of the present invention, according to the experimental test condition, when different ambient temperatures are tested at 30% humidity (30% RH), the cold end stable temperature of the electronic refrigeration sheet is specifically mapped as in table 1 below, and the ambient temperature and the cold end stable temperature test value are fitted to a curve as shown in fig. 1 (the horizontal axis is the ambient temperature, and the vertical axis is the cold end stable temperature), where the curve is close to a first power line segment y in the form of Ax + b, which illustrates that humidity can be predicted in this way.
TABLE 1
Figure BDA0003352709250000041
Figure BDA0003352709250000051
FIG. 2 is a flow chart of an exemplary method of predicting ambient humidity in accordance with the present invention.
As shown in fig. 2, in step S1, after the semiconductor dehumidifier is turned on, the fan is first started to operate, the cooling fin is not operated, and after time t1, the temperature of the cold-end thermal bulb is sampled and stored in the main control system (or MCU) of the semiconductor dehumidifier as the current ambient temperature Tr.
At step S2, when the semiconductor dehumidifier is started, the cold-end thermal bulb temperature starts to decrease, and the cold-end thermal bulb temperature starts to be determined after time T2, and if the cold-end thermal bulb temperature change is smaller than Δ T within time T3, the cold-end thermal bulb temperature at this time is taken as the cold-end stable temperature Tc of the semiconductor dehumidifier.
At step S3, Tr is substituted into N humidity curves RH prestored in the MCU in sequence1～RHNRespectively calculating the cold-end stable temperature Tc of the refrigeration sheet corresponding to different humidity curves1～TcN,
At step S4, Tc is respectively compared with Tc1～TcNMaking a comparison, e.g. Tc is less than Tc1Then the environmental humidity is predicted to be RH1E.g. Tc is greater than TcNThe humidity is predicted to be RHNIf Tcn-1<Tc<TcnThen the humidity of the current environment is predicted to be RHn-1+(Tc-Tcn-1)/(Tcn-Tcn-1)*(RHn-RHn-1) In which 1 is<n<N。
FIG. 3 is a flowchart of an implementation of a scheme for predicting ambient humidity in accordance with an exemplary embodiment of the present invention.
As shown in fig. 3, (1) after the semiconductor dehumidifier is started, the fan is firstly started to operate, the refrigeration sheet is not operated, the cold-end temperature sensing bulb temperature is restored to the ambient temperature by utilizing the heat dissipation of the fan, after t1 time, the cold-end temperature sensing bulb temperature is sampled and prestored to the MCU as the current ambient temperature Tr, the selection of t1 needs to meet the requirement that the temperature of the cold-side temperature sensing bulb is any temperature because the temperature of the cold side of the refrigeration sheet before the semiconductor dehumidifier is started every time, and after the fan operates for t1 time, the difference between the temperature of the cold-side temperature sensing bulb and the ambient temperature is not more than 1 ℃.
(2) When the refrigerating sheet is electrified and started to work, the temperature of the cold-end temperature sensing package begins to fall, the temperature change trend of the cold end of the refrigerating sheet is that the temperature changes stably after falling first and then the temperature changes stably, the cold-end temperature sensing package temperature Tc begins to be judged after T2 time, if the change of the cold-end temperature sensing package temperature Tc is smaller than delta T within T3 time, the heat exchange of the refrigerating sheet tends to be stable at the moment, and the cold-end temperature sensing package temperature at the moment is taken as the stable temperature Tc of the cold end of the refrigerating sheet.
(3) After the ambient temperature Tr and the cold-end stable temperature Tc of the refrigerating sheet are obtained, the ambient temperature Tr is substituted into N humidity curves y which are A1x + bR and y Anx + bn and prestored in the MCU in sequence, the cold-end stable temperatures Tc1 to Tcn of the refrigerating sheet corresponding to different humidity curves are calculated respectively, and the selection of the number of the humidity curves can be carried out according to the requirements of humidity prediction of different devicesThe flexible selection is required, if the prediction accuracy is required to be higher, the humidity curve needs to be more, and if the prediction accuracy is lower, the humidity curve needs to be less. Minimum humidity curve RH1And maximum humidity curve RHNThe lower and upper limits of the ambient humidity during normal use are selected as much as possible.
(4) Tc and Tc1～TcNBy comparison, if Tc is less than Tc1Then the environmental humidity is predicted to be RH1If Tc is greater than TcNThe humidity is predicted to be RHNIf Tcn-1<Tc<TcnThen, the predicted value of the environmental humidity at this moment satisfies RHn-1<RH<RHnAnd (3) a specific humidity prediction formula:
RHn-1+(Tc-Tcn-1)/(Tcn-Tcn-1)*(RHn-RHn-1) (equation 1).
FIG. 4 is a humidity curve diagram of a scheme for predicting ambient humidity in accordance with an exemplary embodiment of the present invention
As shown in fig. 4, to pre-store four humidity curves (RH)1＝50％、RH2＝60％、RH3＝70％、RH 480%) as an example, the actual humidity is calculated, wherein the x-axis corresponds to the ambient temperature Tr, the Y-axis corresponds to the cold end temperature Tc, the ambient temperatures Tr and Tc are detected according to the steps S1 and S2, Tr is sequentially substituted into four humidity curves to respectively calculate the cold end temperatures Tc corresponding to the four humidity curves1～Tc4Comparison of actual cold end temperature Tc values2(60% humidity Curve)<tc<tc3 (70% humidity curve), the current ambient humidity is 60%<RH<Between 70%, the specific humidity is determined by the prediction formula: RH (relative humidity)n-1+(Tc-Tcn-1)/(Tcn-Tcn-1)*(RHn-RHn-1) Obtaining n is 3.
There is also provided, in accordance with one or more embodiments of the present invention, apparatus for predicting ambient humidity, including a memory and a processor; the memory is used for storing a computer program; the processor is configured to, when executing the computer program, implement the humidity prediction method according to the present invention as described above.
According to one or more embodiments of the invention, there is also provided a semiconductor dehumidifier which adopts the humidity prediction method according to the invention or comprises the device.
According to one or more embodiments of the present invention, the fan blowing time t1, the refrigeration sheet working time t2, and the refrigeration sheet working stability determination time t3 of the present invention may be selected according to different system conditions, and are all within the protection scope of the present patent.
According to one or more embodiments of the invention, the number of humidity curves in the control system can be flexibly selected according to different prediction accuracy requirements, and is within the protection scope of the invention.
According to one or more embodiments of the present invention, the prediction of the humidity value between two humidity curves is only one calculation method listed in the present invention, and may be calculated in other manners.
In accordance with one or more embodiments of the present invention, control logic in methods of the present invention may implement processes such as the flows of the above methods of the present invention using encoded instructions (e.g., computer and/or machine readable instructions) stored on a non-transitory computer and/or machine readable medium (e.g., a hard disk drive, a flash memory, a read-only memory, an optical disk, a digital versatile disk, a cache, a random-access memory, and/or any other storage device or storage disk) in which information is stored for any period of time (e.g., for extended periods of time, permanent, transitory instances, temporary caches, and/or information caches). As used herein, the term "non-transitory computer-readable medium" is expressly defined to include any type of computer-readable storage device and/or storage disk and to exclude propagating signals and to exclude transmission media.
In accordance with one or more embodiments of the present invention, the method of the present invention may be implemented using control circuitry, (control logic, a master control system or control module), which may include one or more processors, or which may internally include a non-transitory computer-readable medium. In particular, the master control system or control module may comprise a microcontroller MCU. The processor implementing the processes of the present method may be such as, but not limited to, one or more single-core or multi-core processors. The processor(s) may include any combination of general-purpose processors and special-purpose processors (e.g., graphics processors, application processors, etc.). The processor may be coupled thereto and/or may include a memory/storage device and may be configured to execute instructions stored in the memory/storage device to implement various applications and/or operating systems running on the controller in accordance with the present invention.
The drawings referred to above and the detailed description of the invention, which are exemplary of the invention, serve to explain the invention without limiting the meaning or scope of the invention as described in the claims. Accordingly, modifications may be readily made by those skilled in the art from the foregoing description. Further, those skilled in the art may delete some of the constituent elements described herein without deteriorating the performance, or may add other constituent elements to improve the performance. Further, the order of the steps of the methods described herein may be varied by one skilled in the art depending on the environment of the process or apparatus. Therefore, the scope of the present invention should be determined not by the embodiments described above but by the claims and their equivalents.
While the invention has been described in connection with what is presently considered to be practical embodiments, it is to be understood that the invention is not to be limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (10)

1. A method for predicting the ambient humidity of a semiconductor dehumidifier comprises the following steps:
s1: starting the semiconductor dehumidifier, determining the current environment temperature Tr by sampling the temperature of the cold end temperature sensing bulb of the semiconductor dehumidifier,
s2: starting a refrigerating sheet of the semiconductor dehumidifier to obtain a stable temperature value Tc of a cold-end temperature sensing bulb of the semiconductor dehumidifier;
s3: according to N humidity curves RH pre-stored in the semiconductor dehumidifier system1～RHNAnd mapping of front ambient temperature TrObtaining N stable temperature values Tc corresponding to the cold end of the refrigerating plate1～TcN，
S4: by comparing Tc with Tc1～TcNTo predict the humidity of the current environment.
2. The method as claimed in claim 1, wherein after the semiconductor dehumidifier is turned on in the step S1, the fan is turned on and the cold plate is not operated, and after the fan is operated for a first predetermined period of time, the temperature of the cold end thermal bulb of the semiconductor dehumidifier is taken as the current ambient temperature Tr.
3. The method of claim 1, wherein in the step S2, after the semiconductor dehumidifier cold end thermal bulb is started, after a second predetermined time period, the temperature of the semiconductor dehumidifier cold end thermal bulb is determined, and if the temperature change value of the semiconductor dehumidifier cold end thermal bulb is less than a preset threshold value in a third subsequent predetermined time period, the temperature of the semiconductor dehumidifier cold end thermal bulb determined after the second predetermined time period is taken as the Tc.
4. The method according to claim 1, wherein in said step S4,
if Tc<Tc1Then the humidity of the current environment is predicted to be RH1；
If Tc>TcNThe humidity of the current environment is predicted to be RHN；
If Tcn-1<Tc<TcnThen the humidity of the current environment is predicted to be RHn-1+(Tc-Tcn-1)/(Tcn-Tcn-1)*(RHn-RHn-1)；
Wherein 1< N < N.
5. The method of claim 1, wherein RH1Is the minimum humidity curve, RHNThe maximum humidity curve is selected as the lower limit and the upper limit of the environmental humidity in normal use.
6. The method of claim 1, wherein the accuracy of the humidity prediction of the current environment is related to the number of pre-stored humidity profiles in the semiconductor dehumidifier system.
7. The method as claimed in claim 1, wherein at a fixed ambient humidity, a fitted curve of a current ambient temperature Tr and a temperature value Tc at which a cold-end thermal bulb of the semiconductor dehumidifier is stable is close to a first power line segment, which indicates that a result of predicting the ambient humidity is feasible.
8. The method of claim 1, wherein t1 is such that at any temperature of the cold side bulb, the temperature of the cold side bulb does not differ from ambient temperature by more than 1 ℃ after the blower has been operating for time t 1.
9. An apparatus for predicting ambient humidity, comprising a memory and a processor;
the memory is used for storing a computer program;
the processor, when executing the computer program, for implementing the method according to any of claims 1-8.
10. A semiconductor dehumidifier employing a method according to any of claims 1 to 7 or comprising an apparatus according to claim 8.
CN202111342584.7A 2021-11-12 2021-11-12 Method and device for predicting environment humidity and semiconductor dehumidifier Pending CN114087711A (en)

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Cited By (1)

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JP2001113939A (en) * 1999-10-19 2001-04-24 Sanden Corp Air conditioner for vehicle
JP2002054834A (en) * 2000-08-08 2002-02-20 Mitsubishi Electric Corp Refrigerating cycle device
JP2006145204A (en) * 2006-02-23 2006-06-08 Daikin Ind Ltd Air conditioner
CN102767071A (en) * 2012-06-27 2012-11-07 海尔集团公司 Control method of heat pump dryer cooling fan and heat pump dryer
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114440396A (en) * 2022-03-18 2022-05-06 珠海格力电器股份有限公司 Control method of semiconductor dehumidifier and semiconductor dehumidifier
CN114440396B (en) * 2022-03-18 2023-04-11 珠海格力电器股份有限公司 Control method of semiconductor dehumidifier and semiconductor dehumidifier

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