CN114935238A - Intelligent monitoring and calibrating system for refrigerator temperature acquisition - Google Patents
Intelligent monitoring and calibrating system for refrigerator temperature acquisition Download PDFInfo
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- CN114935238A CN114935238A CN202210193772.6A CN202210193772A CN114935238A CN 114935238 A CN114935238 A CN 114935238A CN 202210193772 A CN202210193772 A CN 202210193772A CN 114935238 A CN114935238 A CN 114935238A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/003—Arrangement or mounting of control or safety devices for movable devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D29/00—Arrangement or mounting of control or safety devices
- F25D29/008—Alarm devices
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2400/00—General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
- F25D2400/36—Visual displays
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/02—Timing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2600/00—Control issues
- F25D2600/06—Controlling according to a predetermined profile
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D2700/00—Means for sensing or measuring; Sensors therefor
- F25D2700/12—Sensors measuring the inside temperature
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- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- General Engineering & Computer Science (AREA)
- Devices That Are Associated With Refrigeration Equipment (AREA)
Abstract
The invention relates to an intelligent monitoring and calibrating system for refrigerator temperature acquisition, which comprises a central processor control module, a temperature data storage unit, an intelligent temperature sensor acquisition module, an emergency battery unit, a fault detection module, an alarm module and a display unit, wherein all the modules are mutually connected with all the units, and the central processor control module is connected with a refrigerator refrigerating system. The central processing unit control module detects temperature data of different positions by the N intelligent temperature sensors of each box body, compares and analyzes the temperature data to judge the loss value of the current temperature and the preset temperature, selects the working mode of a certain box body in the current state in the current refrigerator, judges whether the certain intelligent temperature sensor is normal or not by comparing the historical temperature out-of-tolerance ratio of relative time points, and realizes intelligent calibration of temperature acquisition.
Description
Technical Field
The invention relates to the technical field of intelligent monitoring and calibration for refrigerator temperature acquisition, in particular to an intelligent monitoring and calibration system for refrigerator temperature acquisition.
Background
The refrigerator temperature control system is a control system which automatically controls the start and stop of a refrigeration compressor within a certain temperature difference range according to the temperature requirement of the refrigerator, so that the temperature in the refrigerator is kept within a given value range. The temperature control systems of the refrigerator which are common in the market at present are divided into two types, wherein one type is a purely mechanical type temperature control system for manually adjusting the temperature, and the other type is an electronic type temperature control system for automatically adjusting the temperature.
The pure mechanical temperature control system is troublesome to operate and not intelligent enough due to manual adjustment, while the electronic temperature control system is intelligent enough but affected by gradual aging of the temperature detection sensor, so that certain deviation exists in the control of the temperature inside the refrigerator, the temperature deviation is increased year by year, and the storage quality of stored articles inside the refrigerator is reduced year by year.
Chinese patent publication No.: CN 101408775B. A temperature control method for refrigerator is disclosed. And correcting the temperature in the box body by using the deviation between the acquired environment temperature and the environment temperature calculated by the user set temperature and the user set temperature. And determining whether the refrigeration system is started to refrigerate the box body or not by judging whether the sum of the acquired temperature in the box body and the set temperature correction parameter is greater than the set temperature or not. The temperature detection device in the box is arranged at the position with the height ranging from 1/3 to 1/2 in the box, and the box comprises a refrigerating chamber, a temperature changing chamber and a freezing chamber. The invention patent considers that the patent solves the problem of inaccurate internal temperature of the refrigerator body, and can improve the refrigeration efficiency of the refrigerator and reduce energy consumption.
The invention almost fixes the position of the temperature detecting device, and the judgment result still has certain error due to too few collected judgment conditions, and the internal temperature is not very accurate because the external conditions still have much influence and interference on the box body.
Disclosure of Invention
Therefore, the invention provides an intelligent monitoring and calibrating system for refrigerator temperature acquisition, which is used for solving the problem that the storage quality of stored articles in a refrigerator is reduced year by year due to the gradual aging influence of a temperature detection sensor in the prior art.
In order to achieve the above object, the present invention provides an intelligent monitoring and calibration system for refrigerator temperature acquisition, comprising,
and the central processor control module is used for coordinating the mutual work of other modules, receiving signals fed back by other modules and obtaining a solution of the current condition through intelligent judgment.
The temperature data storage unit is used for storing historical temperature data.
The intelligent temperature sensor acquisition module is used for setting intelligent real-time low-temperature-resistant temperature sensors with corresponding quantity according to the size of the internal space of the refrigerator, acquiring current temperature data of multiple batches and sending the current temperature data to the central processor control module.
The emergency battery unit is provided with a current sensor and a voltage sensor at a refrigerator power supply, judges whether the refrigerator is in a power-off state at present, starts a standby battery to carry out emergency power supply on all module equipment of the intelligent monitoring and calibration system for temperature acquisition of the refrigerator under the power-off condition, charges the standby battery under the normal power supply condition, and adopts a rechargeable large-capacity battery.
And the fault detection module is used for performing fault detection on all intelligent temperature sensors according to historical temperature data stored in the temperature data storage unit, judging whether a certain intelligent temperature sensor has a fault or not, and informing the central processing unit control module of performing alarm processing.
And the alarm module prompts a user which equipment possibly has faults or problems aiming at the signals sent by the central processing unit control module and sends an alarm.
The refrigerator comprises an external display unit, wherein a liquid crystal touch panel and a liquid crystal display screen are arranged outside a refrigerator shell, the liquid crystal touch panel is used for setting the temperature inside the refrigerator according to the actual requirement of a user, and the liquid crystal display screen is used for displaying the current temperature state and the temporary state information of the refrigerator.
The intelligent temperature sensor comprises a central processor control module, a temperature data storage unit, an intelligent temperature sensor acquisition module, an emergency battery unit, a fault detection module, an alarm module and a display unit which are connected with one another, wherein the central processor control module is connected with a refrigerator refrigerating system.
Two operation modes are arranged in the central processing unit control module, are respectively a power supply mode and a battery supply mode, and respectively have two state modes under the two operation modes, namely a refrigerator door closing state mode and a refrigerator door opening state mode.
And the central processor control module makes corresponding actions corresponding to the corresponding judgment according to different operation modes and different state modes.
Under the power supply mode of the running mode power supply, when the state mode is the refrigerator door closing state mode, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be A seconds once,
under the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processor control module controls the data acquisition cycle of the intelligent temperature sensor acquisition module to be once every B seconds,
under the battery power supply mode of the operation mode, when the state mode is the refrigerator door closing state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every A + B seconds,
under the battery power supply mode of the operation mode, when the state mode is the refrigerator door opening state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every A seconds,
wherein, A is more than B, and A, B is a positive integer.
And when a certain state mode in a certain current power supply operation mode is set, the acquisition period is once every O seconds, wherein O is A, B, A + B.
N intelligent temperature sensors are arranged in a certain box body in the refrigerator, the names of the intelligent temperature sensors are a first temperature sensor N1, a second temperature sensor N2, third temperature sensors N3 and … … and an nth temperature sensor Nn, and N is a positive integer.
For the ith temperature sensor Ni, at the temperature T set by the user, the historical temperature data stored by the temperature data storage unit is Ni 1 、Ni 2 、Ni 3 、……、Ni T-1 、Ni T ，Ni T The data is Ni current temperature data, and T is the number of historical temperature data.
The current average temperature of a certain box body in the refrigerator is
The central processor control module controls the refrigerator refrigerating system to work according to the temperature T set by a user, the allowable deviation range of the temperature of a certain box body in the refrigerator is a set value T, and T is less than 1. When the current average temperature of a certain box body in the refrigerator exceeds T + T, the central processing unit control module controls the refrigerator refrigerating system to work at low power, and when the current average temperature of a certain box body in the refrigerator reaches T-T, the central processing unit control module controls the refrigerator refrigerating system to be standby.
Under the power supply mode of the running mode power supply, when the state mode is the refrigerator door closing state mode, the central processing unit control module judges the work of each module and unit according to the comparison between the current average temperature value of a certain refrigerator body in the refrigerator and the current user set value T.
When in use
The central processor control module controls the low-power operation of the refrigeration system of the refrigerator when any Ni works T When the temperature is less than or equal to T-T, the central processor control module controls the refrigeration system of the refrigerator to pause, namely, a certain box body in the refrigerator is put into high-temperature articles to be cooled, so that the temperature difference of each temperature sensor is large, the temperature sensor needs to be stood for a period of time to wait for the articles to carry out heat transfer, and when any Ni is in use T T-T is not more than three times continuously to form a temperature comparison result of the central processing unit control module in the data acquisition period of the intelligent temperature sensor acquisition module, then the central processing unit control module controls the alarm module to give an alarm, and the temperature of a certain area of a certain box body in the refrigerator is determined to be out of control at the moment, so that the problem that the refrigerator door is not closed tightly or the refrigerator shell is sealed can be caused.
When in use
Then inThe central processor control module controls the refrigerator refrigerating system to pause.
When in use
Then, the central processor control module respectively calculates the historical Ni of the intelligent temperature sensor Ni in a certain period according to x pieces of historical data of each intelligent temperature sensor with the most similar time to the currently acquired temperature data T Curve F (Ni) x )，Ni x ＝Ni T-x 、Ni T-(x-1) 、Ni T-(x-2) 、……、Ni T-(x-x) And history Ni of all intelligent temperature sensing T Curve F (Ni) x ) Before comparison, whether the data of each intelligent temperature sensor is normal or not is monitored.
When in use
When any Ni is present T More than or equal to T + T becomes the temperature comparison result of the central processor control module in the data acquisition period O of the intelligent temperature sensor acquisition module, and Ni is T The central processing unit control module controls the alarm module to give an alarm to prompt a user that the temperature of a certain area of a certain box body in the refrigerator is out of control. If this Ni is present T If the temperature sensors are different intelligent temperature sensors, the CPU control module judges that a high-temperature object is newly added in a certain box body of the refrigerator, temporarily suspends the work of a refrigeration system of the refrigerator, and waits for
And (4) the situation occurs and a corresponding countermeasure is taken.
If any T + T > Ni T If the temperature is more than T-T, the central processing unit control module judges that the temperature in the refrigerator is normal at the moment. The central processing unit control module is used for sensing all the history Ni of the intelligent temperature T Curve F (Ni) x ) Amplitude comparison is carried out, and if all curves integrally go upward, the central processing unit control module calculates all curves F (Ni) x ) The reasonable uplink amplitude rate is set to be H ℃/min, and any curve F (Ni) x ) If curve F (Ni) is equal to Hi x ) If the ascending amplitude rate Hi is larger than H, the central processor control module judges that high-temperature articles are newly added in the refrigerator. If curve F (Ni) x ) The uplink amplitude rate Hi is more than H and becomes a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) And if the comparison result is positive, the central processor control module controls the alarm module to give an alarm to prompt a user that the temperature loss of one box body in the refrigerator is abnormal, and the user is asked to check and detect the refrigerator at the first time. If curve F (Ni) x ) And the ascending amplitude rate Hi is less than or equal to H, the central processor control module judges that the internal temperature of the refrigerator is normal at the moment.
Under the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module pauses the work of the refrigerator refrigerating system, only controls the data acquisition period of the intelligent temperature sensor acquisition module, the acquisition period is once every B seconds, and the judgment result of the central processing unit control module is Ni acquired by the intelligent temperature sensor acquisition module to obtain all the intelligent temperature sensors T The current average temperature of a certain box body in the refrigerator is compared with the set temperature T of the user, namely,
and is
Or the opening time of the refrigerator door exceeds S seconds, and S is a positive integer.
The central processing unit control module controls the alarm module to give an alarm to prompt a user that the opening time of the refrigerator door is too long and the temperature loss of a certain box body in the refrigerator is too large.
Under the battery power supply mode of the operation mode, when the state mode is the refrigerator door closing state mode, the emergency battery unit judges that the emergency battery unit is currently in the power-off state, and the standby battery is started to collect all the modules of the intelligent monitoring and calibration system for the refrigerator temperatureThe equipment supplies power in an emergency mode, the central processing unit control module informs the central processing unit control module to judge that the power supply of the refrigerator is powered off at the moment, the refrigeration system of the refrigerator cannot be started to work, and each module is controlled to work in a power-saving mode, namely, the intelligent temperature sensor acquisition module controls the data acquisition period of the intelligent temperature sensor acquisition module to be prolonged to A + B seconds once, and if the curve F (Ni) is formed at the moment x ) The uplink amplitude rate Hi is higher than H and is continuously changed into a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) And if the comparison result is obtained, the central processing unit control module controls the alarm module to give an alarm to prompt a user that the temperature loss of one box body in the refrigerator is abnormal, and the user is asked to check the refrigerator sealing at the first time. If curve F (Ni) x ) And the uplink amplitude rate Hi is less than or equal to H, the central processor control module judges that the refrigerator is normally sealed at the moment, and the temperature of a certain box body in the refrigerator is normal.
Under the battery power supply mode of the operation mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module controls the intelligent temperature sensor acquisition module to control the data acquisition period of the intelligent temperature sensor acquisition module to be prolonged to A seconds for one time, and the central processing unit control module judges that the result is Ni acquired by the intelligent temperature sensor acquisition module to all the intelligent temperature sensors T The current average temperature of a certain box body in the refrigerator is compared with the set temperature T of the user, namely,
and is
Or the opening time of the refrigerator door exceeds
Second, S is a positive integer.
The central processing unit control module controls the alarm module to give an alarm to prompt a user that the opening time of the refrigerator door is too long and the temperature loss of a certain box body in the refrigerator is too large.
If the central processing unit control module determines that the refrigerator door opening state mode is just switched to the refrigerator door closing state mode, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be adjusted from the current period O seconds to O seconds once
Once per second, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module according to the loss ratio of the average value of the measured temperature data to the set temperature T
The total acquisition time of one second and the working strength of a refrigeration system of the refrigerator are set to J > K, and J, K is a positive integer.
If it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is J multiplied by O seconds, and the high-power work of the refrigerator refrigerating system is controlled, namely, the high-density long-time acquisition and detection temperature and the high-power refrigeration are carried out.
If it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is K multiplied by O seconds, and the refrigerator refrigerating system is controlled to work at low power, namely, the temperature is acquired and detected at high density for short time, and the refrigerating is carried out at low power.
If it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is O seconds, and the low-power operation of the refrigerator refrigerating system is controlled, namely the low-density short-time acquisition detection temperature and the low-power refrigeration are carried out.
The temperature data storage unit stores historical temperature values Ni corresponding to all intelligent temperature sensors, wherein the historical temperature values Ni are generated by historical temperature data detected by any intelligent temperature sensor and do not have alarm prompts before and after door opening T ' and historical temperature Curve F (Ni) x ) ', and recording the relative time point of each data, the central processor control module will history temperature value Ni every 24h T ' and historical temperature Curve F (Ni) x ) ' with the current temperature value Ni T And temperature curve F (Ni) x ) Comparing the temperature difference, and setting the temperature value Ni T And Ni T A reasonable difference of' is Ni T D Setting the temperature curve F (Ni) x ) And F (Ni) x ) A reasonable difference of' is F (Ni) x ) D When the average value of the temperature of a certain box body in the refrigerator is in a normal state, the central processing unit control module compares the historical temperature value, the historical temperature curve, the current temperature value and the temperature difference value of the current historical temperature curve with the reasonable difference value, and judges whether the intelligent temperature sensor possibly breaks down at present. Let U be a positive integer.
When the relative time points are consistent, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
And when the temperature sensor is in failure, the central processing unit control module judges that the same Ni temperature sensor is likely to be in failure or the refrigerator shell is likely to be in failure, and informs the alarm module to give an alarm to prompt a user that a certain temperature sensor is likely to be in failure.
When relative timeIn a uniform manner, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
And then the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points are consistent, Ni T -Ni T ′≤Ni T D And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points are consistent, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
And when the temperature sensor is in failure, the central processing unit control module judges that the same Ni temperature sensor is likely to be in failure or the refrigerator shell is likely to be in failure, and informs the alarm module to give an alarm to prompt a user that a certain temperature sensor is likely to be in failure.
When the relative time points coincide, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points coincide, F (Nix) -F (Nix) ≦ F (Ni) x ) D And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
The external display unit is arranged outside the refrigerator shell, the external display unit is provided with a liquid crystal touch panel and a liquid crystal display screen, the liquid crystal touch panel is provided with a plurality of blocks which respectively display different box body temperatures, different box bodies comprise but not limited to a box body A, a box body B and a box body C, the temperature of different box bodies in the refrigerator can be manually adjusted by a user according to actual requirements, the initial temperature is respectively set to be 0 ℃, the liquid crystal display screen is used for displaying the temperature state of a certain box body in the refrigerator at present, and the temperature state displayed by the box body with the problem in the alarm state flickers and gives out alarm sound.
Compared with the prior art, the invention has the advantages that the central processing unit control module detects the temperatures of different positions by using the N intelligent temperature sensors of each box body, judges the current temperature and the preset temperature loss value one by one and judges the working mode of a certain box body in the current state in the current refrigerator one by using the detected temperature data of different positions one by one and in a sequence one by one, and the working mode comprises but is not limited to changing the period of temperature data collected by the intelligent temperature sensors and changing the working power of a refrigerating system of the refrigerator.
The temperature of a certain box body in the refrigerator is more accurate and controllable, and the temperature from the surface to the body can be ensured in the temperature calibration process from the point to the surface.
The central processor control module judges whether a certain intelligent temperature sensor is in an abnormal working state or whether the refrigerator shell is in a problem or not by utilizing the historical temperature over-differential ratio and the relative time point.
The refrigerator is more intelligent, low in demand, low in energy consumption and high in demand and energy efficiency, adjustment can be better made at any time according to the current state of a certain box body in the refrigerator, the current problems can be simply judged, a user is informed to contact a manufacturer to maintain as soon as possible, and the service life of the refrigerator is prolonged.
Drawings
FIG. 1 is a schematic connection diagram of an intelligent monitoring and calibration system for collecting refrigerator temperature according to the present invention;
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention provides an intelligent monitoring and calibrating system for collecting refrigerator temperature, comprising,
and the central processor control module is used for coordinating the mutual work of other modules, receiving signals fed back by other modules and obtaining a solution of the current condition through intelligent judgment.
The temperature data storage unit is used for storing historical temperature data.
The intelligent temperature sensor acquisition module is used for setting intelligent real-time low-temperature-resistant temperature sensors with corresponding quantity according to the size of the internal space of the refrigerator, acquiring current temperature data of multiple batches and sending the current temperature data to the central processor control module.
The emergency battery unit is provided with a current sensor and a voltage sensor at a refrigerator power supply, judges whether the refrigerator is in a power-off state at present, starts a standby battery to carry out emergency power supply on all module equipment of the intelligent monitoring and calibration system for temperature acquisition of the refrigerator under the power-off condition, charges the standby battery under the normal power supply condition, and adopts a rechargeable large-capacity battery.
And the fault detection module is used for performing fault detection on all intelligent temperature sensors according to historical temperature data stored in the temperature data storage unit, judging whether a certain intelligent temperature sensor has a fault or not, and informing the central processing unit control module of performing alarm processing.
And the alarm module prompts a user which equipment possibly has faults or problems aiming at the signals sent by the central processing unit control module and sends an alarm.
The refrigerator comprises an external display unit, wherein a liquid crystal touch panel and a liquid crystal display screen are arranged outside a refrigerator shell, the liquid crystal touch panel is used for setting the temperature inside the refrigerator according to the actual requirement of a user, and the liquid crystal display screen is used for displaying the current refrigerator temperature state and temporary state information.
The intelligent temperature sensor comprises a central processor control module, a temperature data storage unit, an intelligent temperature sensor acquisition module, an emergency battery unit, a fault detection module, an alarm module and a display unit which are connected with one another, wherein the central processor control module is connected with a refrigerator refrigerating system.
Two operation modes are arranged in the central processing unit control module, namely a power supply mode and a battery supply mode, and the two operation modes respectively have two state modes, namely a refrigerator door closing state mode and a refrigerator door opening state mode.
And the central processor control module makes corresponding actions corresponding to the corresponding judgment according to different operation modes and different state modes.
Under the power supply mode of the running mode and when the state mode is the refrigerator door closing state mode, the central processor control module controls the data acquisition cycle of the intelligent temperature sensor acquisition module to be once every A seconds,
under the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every B seconds,
under the battery power supply mode of the operation mode and when the state mode is the refrigerator door closed state mode, the central processor control module controls the data acquisition cycle of the intelligent temperature sensor acquisition module to be once every A + B seconds,
under the battery power supply mode of the operation mode and when the state mode is the refrigerator door opening state mode, the central processor control module controls the data acquisition cycle of the intelligent temperature sensor acquisition module to be once every A seconds,
wherein, A is more than B, and A, B is a positive integer.
And when a certain state mode in a certain current power supply operation mode is set, the acquisition period is once every O seconds, wherein O is A, B, A + B.
The method is characterized in that N intelligent temperature sensors are arranged in a certain box body in the refrigerator according to the arrangement density of cubic decimeters, at least N intelligent temperature sensors are guaranteed to be arranged in each cubic meter, the total number of the intelligent temperature sensors in the certain box body in the refrigerator is N, the names of the intelligent temperature sensors are a first temperature sensor N1, a second temperature sensor N2, a third temperature sensor N3, a third temperature sensor … … and an nth temperature sensor Nn, and N is a positive number.
For the ith temperature sensor Ni, at the temperature T set by the user, the historical temperature data stored by the temperature data storage unit is Ni 1 、Ni 2 、Ni 3 、……、Ni T-1 、Ni T ，Ni T The current temperature data is Ni, and T is the number of historical temperature data.
The current average temperature of a certain box body in the refrigerator is
The central processor control module controls the refrigerator refrigerating system to work according to the temperature T set by a user, the allowable deviation range of the temperature of a certain box body in the refrigerator is a set value T, and T is less than 1. When the current average temperature of a certain box body in the refrigerator exceeds T + T, the central processing unit control module controls the low-power operation of the refrigeration system of the refrigerator, and when the current average temperature of a certain box body in the refrigerator reaches T-T, the central processing unit control module controls the standby state of the refrigeration system of the refrigerator.
Under the power supply mode of the running mode power supply, when the state mode is the refrigerator door closing state mode, the central processing unit control module judges the work of each module and unit according to the comparison between the current average temperature value of a certain refrigerator body in the refrigerator and the current user set value T.
When in use
The central processor control module controls the low-power operation of the refrigeration system of the refrigerator when any Ni works T When the temperature is less than or equal to T-T, the central processor control module controls the refrigeration system of the refrigerator to pause working, and when any Ni exists T And continuously obtaining a temperature comparison result of the central processing unit control module in the data acquisition period of the intelligent temperature sensor acquisition module by the central processing unit control module for more than or equal to T-T three times, and controlling the alarm module to give an alarm by the central processing unit control module to judge that the temperature of a certain area of a certain box body in the refrigerator is out of control at the moment.
When in use
The central processor control module controls the refrigerator refrigeration system to pause.
When in use
Then the central processor control module respectively calculates the historical Ni of the intelligent temperature sensor Ni in a certain period according to x pieces of historical data of each intelligent temperature sensor with the time closest to the currently acquired temperature data T Curve F (Ni) x )，Ni x ＝Ni T-x 、Ni T-(x-1) 、Ni T-(x-2) 、……、Ni T-(x-x) And history of all intelligent temperature sensing Ni T Curve F (Ni) x ) Before comparison, whether the data of each intelligent temperature sensor is normal or not is monitored.
If any one of Ni T More than or equal to T + T becomes the temperature comparison result of the central processor control module in the data acquisition period O of the intelligent temperature sensor acquisition module, and Ni is T Is the same asAnd the intelligent temperature sensor controls the alarm module to give an alarm by the central processing unit control module so as to prompt a user that the temperature of a certain area of a certain box body in the refrigerator is out of control. If this Ni is present T If the temperature sensors are different intelligent temperature sensors, the CPU control module judges that a high-temperature object is newly added in a certain box body of the refrigerator, temporarily suspends the work of a refrigeration system of the refrigerator, and waits for
And the situation occurs and a corresponding countermeasure is taken.
If any T + T > Ni T If the temperature is more than T-T, the central processing unit control module judges that the temperature in the refrigerator is normal at the moment. The central processing unit control module is used for sensing all the history Ni of the intelligent temperature T Curve F (Ni) x ) Amplitude comparison is carried out, and if all curves integrally go upward, the central processing unit control module calculates all curves F (Ni) x ) The reasonable uplink amplitude rate is set to be H ℃/min, and any curve F (Ni) x ) Has an uplink amplitude rate of Hi, if curve F (Ni) x ) If the ascending amplitude rate Hi is larger than H, the central processor control module judges that high-temperature articles are newly added in the refrigerator. If curve F (Ni) x ) The uplink amplitude rate Hi is more than H and becomes a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) And if the comparison result is positive, the central processor control module controls the alarm module to give an alarm to prompt a user that the temperature loss of one box body in the refrigerator is abnormal, and the user is asked to check and detect the refrigerator at the first time. If curve F (Ni) x ) And the ascending amplitude rate Hi is less than or equal to H, the central processor control module judges that the internal temperature of the refrigerator is normal at the moment.
Under the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module pauses the work of the refrigerator refrigerating system, only controls the data acquisition period of the intelligent temperature sensor acquisition module, the acquisition period is once every B seconds, and the judgment result of the central processing unit control module is Ni acquired by the intelligent temperature sensor acquisition module to obtain all the intelligent temperature sensors T Value and calculated current of certain box body in refrigeratorThe comparison of the average temperature with the user-set temperature T, i.e.,
and is provided with
Or the opening time of the refrigerator door exceeds S seconds, and S is a positive integer.
The central processing unit control module controls the alarm module to give an alarm to prompt a user that the opening time of the refrigerator door is too long and the temperature loss of a certain box body in the refrigerator is too large.
Under the battery power supply mode of the operation mode, when the state mode is a refrigerator door closing state mode, the emergency battery unit judges that the refrigerator is in a power-off state at present, the standby battery is started to supply power to all module devices of the intelligent refrigerator temperature acquisition monitoring and calibration system in an emergency mode, the central processing unit control module is informed, the central processing unit control module judges that the power supply of the refrigerator is powered off at the moment, the refrigerator refrigeration system cannot be started to work, each module is controlled to work in a power-saving mode, namely, the data acquisition period of the intelligent temperature sensor acquisition module controlled by the intelligent temperature sensor acquisition module is prolonged to one time in A + B seconds, if the curve F (Ni) at the moment is obtained (Ni x ) The uplink amplitude rate Hi is higher than H and is continuously changed into a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) And if the comparison result is obtained, the central processing unit control module controls the alarm module to give an alarm to prompt a user that the temperature loss of one box body in the refrigerator is abnormal, and the user is asked to check the refrigerator sealing at the first time. If curve F (Ni) x ) The ascending amplitude rate Hi is less than or equal to H, the central processor control module judges that the refrigerator is normally sealed at the moment, and the temperature of a certain box body in the refrigerator is normal.
Under the battery power supply mode of the running mode and when the state mode is the refrigerator door opening state mode, the central processing unit control module controls the intelligent temperature sensor acquisition module to control the data acquisition period of the intelligent temperature sensor acquisition moduleThe time is prolonged to A seconds, and the central processing unit control module judges that the result is Ni acquired by the intelligent temperature sensor acquisition module to all the intelligent temperature sensors T The current average temperature of a certain box body in the refrigerator is compared with the set temperature T of the user, namely,
and is
Or the opening time of the refrigerator door exceeds
Second, S is a positive integer.
The central processing unit control module controls the alarm module to give an alarm to prompt a user that the opening time of the refrigerator door is too long and the temperature loss of a certain box body in the refrigerator is too large.
If the central processing unit control module determines that the refrigerator door opening state mode is just switched to the refrigerator door closing state mode, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be adjusted from the current period O seconds to O seconds once
Once per second, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module according to the loss ratio of the average value of the measured temperature data to the set temperature T
Setting J to be more than K and J, K to be a positive integer according to the total acquisition time of one second and the working strength of a refrigeration system of the refrigerator.
If it is
The control module of the central processing unit controls the intelligent temperatureData acquisition period of acquisition module of degree sensor
The total acquisition time of one second is J multiplied by O seconds, and the high-power work of the refrigerator refrigerating system is controlled, namely, the high-density long-time acquisition and detection temperature and the high-power refrigeration are carried out.
If it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is K multiplied by O seconds, and the low-power operation of the refrigerator refrigerating system is controlled, namely, the high-density short-time acquisition detection temperature and the low-power refrigeration are carried out.
If it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is O seconds, and the low-power operation of the refrigerator refrigerating system is controlled, namely the low-density short-time acquisition detection temperature and the low-power refrigeration are carried out.
The temperature data storage unit stores historical temperature values Ni corresponding to all intelligent temperature sensors, wherein the historical temperature values Ni are generated by historical temperature data detected by any intelligent temperature sensor and do not have alarm prompts before and after door opening T ' and historical temperature Curve F (Ni) x ) ', and recording the relative time point of each data, the central processor control module will record the historical temperature value Ni every 24h T ' and historical temperature Curve F (Ni) x ) ' with the current temperature value Ni T And temperature curve F (Ni) x ) Comparing the temperature difference and setting the temperature value Ni T And Ni T A reasonable difference of' is Ni T D Setting the temperature curve F (Ni) x ) And F (Ni) x ) A reasonable difference of' is F (Ni) x ) D When the average value of the temperature of a certain box body in the refrigerator is in a normal state, the central processing unit control module compares the historical temperature value, the historical temperature curve, the current temperature value and the temperature difference value of the current historical temperature curve with the reasonable difference value, and judges whether the intelligent temperature sensor possibly breaks down at present. Let U be a positive integer.
When the relative time points are consistent, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
And when the temperature sensor is in failure, the central processing unit control module judges that the same Ni temperature sensor is likely to be in failure or the refrigerator shell is likely to be in failure, and informs the alarm module to give an alarm to prompt a user that a certain temperature sensor is likely to be in failure.
When the relative time points are consistent, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points are consistent, Ni T -Ni T ′≤Ni T D And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points are consistent, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
And then the central processor control module judges that the same Ni temperature sensor possibly fails or the tightness of the refrigerator shell possibly fails, and informs the alarm module to give an alarm to prompt a user that a certain temperature sensor possibly fails.
When the relative time points are consistent, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
When the relative time points coincide, F (Nix) -F (Nix) ≦ F (Ni) x ) D And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
The external display unit is arranged outside the refrigerator shell, the external display unit is provided with a liquid crystal touch panel and a liquid crystal display screen, the liquid crystal touch panel is provided with a plurality of blocks which respectively display different box body temperatures, different box bodies comprise but not limited to a box body A, a box body B and a box body C, the temperature of different box bodies in the refrigerator can be manually adjusted by a user according to actual requirements, the initial temperature is respectively set to be 0 ℃, the liquid crystal display screen is used for displaying the temperature state of a certain box body in the refrigerator at present, and the temperature state displayed by the box body with the problem in the alarm state flickers and gives out alarm sound.
Compared with the prior art, the invention has the advantages that the N intelligent temperature sensors of each box body are used for detecting the temperatures of different positions, the central processor control module judges the current temperature and the preset temperature loss value one by one and one by several rows by utilizing the detected temperature data of different positions so as to judge the working mode of one box body in the current state in the current refrigerator, and the working mode comprises but is not limited to changing the period of the temperature data collected by the intelligent temperature sensors and changing the working power of a refrigeration system of the refrigerator.
The temperature of a certain box body in the refrigerator is more accurate and controllable, namely from point to surface and from surface to body.
The central processor control module judges whether a certain intelligent temperature sensor is in an abnormal working state or whether the refrigerator shell is in a problem or not by utilizing the historical temperature over-differential ratio and the relative time point.
The refrigerator is more intelligent, low in demand, low in energy consumption and high in demand and energy efficiency, adjustment can be better made at any time according to the current state of a certain box body in the refrigerator, the current problems can be simply judged, a user is informed to contact a manufacturer to maintain as soon as possible, and the service life of the refrigerator is prolonged.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is apparent to those skilled in the art that the scope of the present invention is not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can be within the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The invention provides an intelligent monitoring and calibrating system for refrigerator temperature acquisition, which is characterized by comprising,
the temperature data storage unit is used for storing historical temperature data;
the intelligent temperature sensor acquisition module is connected with the temperature data storage unit and consists of a plurality of low-temperature-resistant intelligent temperature sensors, and the number of the low-temperature-resistant intelligent temperature sensors is determined by the size of a certain box body space in the refrigerator;
the fault detection module is connected with the temperature data storage unit and is used for detecting the working state of each low-temperature-resistant intelligent temperature sensor;
the alarm module is connected with the fault detection module and used for sending an alarm to prompt the real-time state of the refrigerator;
the external display unit is connected with the alarm module, arranged outside the refrigerator shell and provided with a liquid crystal touch panel and a liquid crystal display screen for displaying current temperature information;
the emergency battery unit is connected with the intelligent temperature sensor acquisition module, the external display unit, the alarm module, the fault detection module and the temperature data storage unit, is arranged at a refrigerator power supply, is provided with a current sensor and a voltage sensor and is used for monitoring whether the refrigerator power supply is electrified or not;
the central processor control module is connected with the temperature data storage unit, the emergency battery unit, the fault detection module, the alarm module and the external display unit, and is used for coordinating the mutual work of other modules, receiving the information fed back by other modules in real time and commanding the work of other modules or units according to an intelligent judgment result;
the central processor control module is connected with a refrigerator refrigerating system;
the central processor control module is internally provided with two operation modes, namely a power supply mode and a battery supply mode, wherein the two operation modes respectively have two state modes, namely a refrigerator door closing state mode and a refrigerator door opening state mode;
the central processor control module judges that the intelligent temperature sensor acquisition module carries out contrastive analysis and judgment on temperature data of different positions detected by a plurality of intelligent temperature sensors of each box body under a certain current running state according to four running states respectively corresponding to two set running modes and two state modes, and obtains a corresponding processing method according to contrastive analysis and judgment results.
2. The intelligent monitoring and calibrating system for refrigerator temperature acquisition according to claim 1, wherein a power supply mode, a battery supply mode, a refrigerator door closed state mode and a refrigerator door open state mode are arranged in the central processor control module, and data acquisition cycles corresponding to different power supply modes and different state modes are different;
under the power supply mode of the running mode power supply, when the state mode is the refrigerator door closing state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every A seconds,
under the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every B seconds,
under the battery power supply mode of the operation mode and when the state mode is the refrigerator door closing state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every A + B seconds,
under the battery power supply mode of the operation mode and when the state mode is the refrigerator door opening state mode, the central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be once every A seconds,
wherein, A is more than B, and A, B is a positive integer;
when the power supply running mode is in a certain state mode, the acquisition period is once every O seconds, wherein O is A, B, A + B;
n low-temperature-resistant intelligent temperature sensors are arranged in a certain box body in the refrigerator, the names of the low-temperature-resistant intelligent temperature sensors are a first temperature sensor N1, a second temperature sensor N2, third temperature sensors N3 and N … … and an N temperature sensor N, N is a positive integer;
for the ith temperature sensor Ni, when the set temperature is T, the historical temperature data stored by the temperature data storage unit is Ni 1 、Ni 2 、Ni 3 、……、Ni T-1 、Ni T Wherein Ni T The current temperature data of Ni is T, the number of historical temperature data is 1,2,. n;
the current average temperature of a certain box body in the refrigerator is G,
the central processor control module controls a refrigeration system of the refrigerator to work according to a set temperature T, the allowable deviation range of the temperature of a certain box body in the refrigerator is a set value T, and T is less than 1;
and the central processor control module compares the current average temperature G with T + T and T-T to adjust the running state of the refrigerator.
3. The intelligent monitoring and calibration system for refrigerator temperature collection according to claim 2,
the central processor control module makes corresponding judgment corresponding actions according to the current temperature in a power supply mode and a refrigerator door closing state mode;
under the power supply mode of the running mode power supply, when the state mode is the refrigerator door closing state mode, the central processing unit control module judges the work of each module and unit according to the comparison between the current average temperature value of a certain refrigerator body in the refrigerator and the current user set value T;
when G is larger than or equal to T + T, the central processor control module controls the low-power work of the refrigerator refrigerating system;
when G is more than or equal to T + T and any NiT is less than or equal to T-T, the central processor control module controls the refrigerator refrigerating system to pause;
when G is larger than or equal to T + T, if any T-T which is larger than or equal to NiT and is larger than or equal to T-T is continuously obtained three times as a temperature comparison result of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module, the central processor control module controls the alarm module to give an alarm, and the temperature of a certain area of a certain box body in the refrigerator is judged to be out of control at the moment;
when G is less than or equal to T-T, the central processor control module controls the refrigerator refrigerating system to pause;
when T + T is more than G and more than T-T, the central processor control module respectively calculates the historical Ni of the intelligent temperature sensor Ni in a certain period according to x pieces of historical data of each intelligent temperature sensor, which are closest to the currently acquired temperature data in time T Curve F (Ni) x )，Ni x ＝Ni T-x 、Ni T-(x-1) 、Ni T-(x-2) 、……、Ni T-(x-x) And history Ni of all low temperature resistant intelligent temperature sensors T CurveF(Ni x ) Before comparison, monitoring whether the data of each low-temperature-resistant intelligent temperature sensor is normal;
when T + T > G > T-T, any Ni, if present T More than or equal to T + T becomes the temperature comparison result of the central processor control module in the data acquisition period O of the intelligent temperature sensor acquisition module, and Ni is T If the temperature sensors are the same intelligent temperature sensor, the central processor control module controls the alarm module to give an alarm to prompt a user that the temperature of a certain area of a certain box body in the refrigerator is out of control; if this Ni is present T If the temperature sensors are different intelligent temperature sensors, the central processor control module judges that a high-temperature article is newly added to a certain box body of the refrigerator, temporarily stops the work of a refrigerating system of the refrigerator, waits for the occurrence of the condition G which is more than or equal to T + T and takes corresponding counter measures;
when T + T > G > T-T, if any T + T > Ni T If the temperature is higher than T-T, the central processor control module judges that the temperature in the refrigerator is normal at the moment;
when T + T > G > T-T, and T + T > Ni T When the temperature is more than T-T, the central processing unit control module enables all the history Ni of intelligent temperature sensing to be processed T Curve F (Ni) x ) Amplitude comparison is carried out, and if all curves integrally go upward, the central processing unit control module calculates all curves F (Ni) x ) The reasonable uplink amplitude rate is set to be H, and any curve F (Ni) x ) The uplink amplitude rate of (c) is Hi,
if curve F (Ni) x ) If the uplink amplitude rate Hi is greater than H, the central processor control module judges that high-temperature articles are newly added to the refrigerator;
if curve F (Ni) x ) The uplink amplitude rate Hi is more than H and becomes a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) If the comparison result is positive, the central processing unit control module controls the alarm module to give an alarm to prompt a user that the temperature loss of one box body in the refrigerator is abnormal, and the user needs to check and detect at the first time;
if curve F (Ni) x ) The uplink amplitude rate Hi is less than or equal to H, the central processor control module judges that the inside of the refrigerator is at the momentThe temperature is normal.
4. The intelligent monitoring and calibration system for the temperature acquisition of the refrigerator according to claim 2, wherein the central processor control module makes corresponding actions corresponding to the corresponding determinations according to the current temperature in a power supply mode in an operation mode and an opening state mode of the refrigerator door;
in the power supply mode of the running mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module suspends the work of a refrigerator refrigerating system, only controls the data acquisition period of the intelligent temperature sensor acquisition module, the acquisition period is once every B seconds, and when the central processing unit control module judges that the result is Ni acquired by the intelligent temperature sensor acquisition module to all the intelligent temperature sensors T Comparing the calculated current average temperature of a certain box body in the refrigerator with the set temperature T of a user, namely G is more than T, and
or the opening time of the refrigerator door exceeds S seconds, wherein S is a positive integer;
the central processing unit control module controls the alarm module to give an alarm.
5. The intelligent monitoring and calibration system for refrigerator temperature acquisition according to claim 2, wherein the central processor control module makes corresponding actions corresponding to the corresponding determinations according to the current temperature in the battery power supply mode and the refrigerator door closed state mode;
under the battery power supply mode of the operation mode, when the state mode is a refrigerator door closing state mode, the emergency battery unit judges that the refrigerator is in a power-off state at present, a standby battery is started to supply power to all module equipment of the intelligent temperature acquisition monitoring and calibration system of the refrigerator in an emergency mode, and the central processor control module is informed, judges that the power supply of the refrigerator is powered off at the moment, the refrigeration system of the refrigerator cannot be started to work, and controls all the modules to work in a power-saving mode, namely the intelligent temperature sensor acquisition module controls the data acquisition period of the intelligent temperature sensor acquisition module to be prolonged to one time of A + B seconds;
the central processing unit control module is used for sensing all the history Ni of the intelligent temperature T Curve F (Ni) x ) Amplitude comparison is carried out, and if all curves integrally go upward, the central processing unit control module calculates all curves F (Ni) x ) The reasonable uplink amplitude rate is set to be H, and any curve F (Ni) x ) The uplink amplitude rate of (c) is Hi,
if the curve F (Ni) is present x ) The uplink amplitude rate Hi is more than H and becomes a temperature curve F (Ni) of the central processor control module in the data acquisition period of the intelligent temperature sensor acquisition module x ) If the comparison result is positive, the central processing unit control module controls the alarm module to give an alarm, the temperature loss of one box body in the refrigerator is abnormal, and the refrigerator sealing needs to be detected;
if curve F (Ni) x ) And the uplink amplitude rate Hi is less than or equal to H, the central processor control module judges that the refrigerator is normally sealed at the moment and the temperature of a certain box body in the refrigerator is normal.
6. The intelligent monitoring and calibration system for the temperature acquisition of the refrigerator according to claim 2, wherein the central processor control module makes corresponding actions corresponding to the corresponding determinations according to the current temperature in a battery power supply mode and a refrigerator door opening state mode;
under the battery power supply mode in the operation mode, when the state mode is the refrigerator door opening state mode, the central processing unit control module controls the intelligent temperature sensor acquisition module to control the data acquisition period of the intelligent temperature sensor acquisition module to be prolonged to A seconds for once, and when the central processing unit control module judges that the result is that the Ni of all intelligent temperature sensors is acquired by the intelligent temperature sensor acquisition module T Comparing the calculated current average temperature of a certain box body in the refrigerator with the set temperature T of a user, namely G is more than T, and
or the opening time of the refrigerator door exceeds
Second, S is a positive integer.
The central processing unit control module controls the alarm module to give an alarm.
7. The intelligent monitoring and calibration system for the refrigerator temperature acquisition according to claim 2, wherein the central processor control module makes corresponding actions corresponding to corresponding determinations according to the current temperature under the condition that different operation modes and different state modes are switched with each other;
if the central processing unit control module determines that the refrigerator door opening state mode is just switched to the refrigerator door closing state mode, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module to be adjusted from the current period O seconds to the current period O seconds once
Once every second, the central processing unit control module controls the data acquisition period of the intelligent temperature sensor acquisition module according to the loss ratio of the average value of the measured temperature data to the set temperature T
Setting J to be more than K and J, K to be a positive integer according to the total acquisition time of one second and the working strength of a refrigeration system of the refrigerator;
if it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total collecting time of one second is J multiplied by O seconds, and the refrigeration of the refrigerator is controlledThe system works at high power, namely, the temperature is acquired and detected at high density for a long time, and the system is refrigerated at high power;
if it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is K multiplied by O seconds, and a refrigerator refrigerating system is controlled to work at low power, namely, the temperature is acquired and detected at high density for short time, and the refrigerating is carried out at low power;
if it is
The central processor control module controls the data acquisition period of the intelligent temperature sensor acquisition module
The total acquisition time of one second is O seconds, and the low-power operation of the refrigerator refrigerating system is controlled, namely the low-density short-time acquisition detection temperature and the low-power refrigeration are carried out.
8. The intelligent refrigerator temperature collection monitoring and calibration system of claim 3, wherein a comparison value of historical temperature data stored in the temperature data storage unit and current temperature data is used to determine whether the current intelligent temperature sensor or the refrigerator shell has a problem in sealing performance,
the temperature data storage unit stores all historical temperature data detected by any intelligent temperature sensor without alarm prompt before and after door opening, historical temperature value NiT ' corresponding to each intelligent temperature sensor and historical temperature curve F (Nix) ', and records the relative time point of each data, the central processor control module compares the historical temperature value NiT ' and the historical temperature curve F (Nix) ' with the current temperature value NiT and the temperature curve F (Nix) at every 24h, the reasonable difference value of the temperature values NiT and NiT ' is NiTD, the reasonable difference value of the temperature curves F (Nix) and F (Nix) is F (Nix) D, and when the average value of the temperature of a certain box body in the refrigerator is in a normal state, the central processor control module enables the historical temperature value, the historical temperature curve and the current temperature value to be in a normal state, And comparing the temperature difference value of the current historical temperature curve with the reasonable difference value, and judging whether the intelligent temperature sensor possibly fails at present. Let U be a positive integer.
9. The intelligent refrigerator temperature acquisition monitoring and calibration system of claim 8, comprising a method for judging whether the current intelligent temperature sensor or the refrigerator shell has a problem in tightness by the central processor control module according to a comparison value of historical temperature data stored in the temperature data storage unit and current temperature data;
when the relative time points are consistent, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
When the temperature sensor is in failure, the central processing unit control module judges that the same Ni temperature sensor is likely to be in failure or the refrigerator shell is likely to be in failure, and informs the alarm module to give an alarm to prompt a user that a certain temperature sensor is likely to be in failure;
when the relative time points are consistent, Ni T -Ni T ′＞Ni T D And the temperature out-of-tolerance ratio
If so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the refrigerator shell has no problem in sealing performance;
when the relative time points are consistent, Ni T -Ni T ′≤Ni T D When the temperature sensor is in failure, the central processor control module judges that the same Ni temperature sensor is not in failure or the refrigerator shell is sealedNo problems occur;
when the relative time points are consistent, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
If so, the central processor control module judges that the same Ni temperature sensor possibly fails or the refrigerator shell is possibly in a problem of sealing performance, and informs an alarm module to give an alarm;
when the relative time points are consistent, F (Nix) -F (Nix)' > F (Ni) x ) D And the temperature out-of-tolerance ratio
If so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the refrigerator shell has no problem in sealing performance;
when the relative time points coincide, F (Nix) -F (Nix) ≦ F (Ni) x ) D And if so, the central processor control module judges that the same Ni temperature sensor does not have a fault or the tightness of the refrigerator shell does not have a problem.
10. The intelligent monitoring and calibration system for the refrigerator temperature acquisition according to claim 1, wherein the external display unit is arranged outside the refrigerator shell, the external display unit comprises a liquid crystal touch panel and a liquid crystal display screen, the liquid crystal touch panel comprises a plurality of liquid crystal touch panels which respectively display different refrigerator body temperatures, the different refrigerator bodies comprise but are not limited to a refrigerator body A, a refrigerator body B and a refrigerator body C, the different refrigerator body temperatures inside the refrigerator are adjusted according to actual requirements, the initial temperatures are respectively set to be 0 ℃, the liquid crystal display screen is used for displaying the temperature state of one refrigerator body inside the refrigerator at present, and the temperature state displayed by the problem refrigerator body flickers and gives an alarm sound in the alarm state.
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| CN114935238B (en) | 2022-12-23 |
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