CN114459586B - Method for calibrating a weighing device in a freezer and refrigerator and freezer and refrigerator - Google Patents
Method for calibrating a weighing device in a freezer and refrigerator and freezer and refrigerator Download PDFInfo
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- CN114459586B CN114459586B CN202011239839.2A CN202011239839A CN114459586B CN 114459586 B CN114459586 B CN 114459586B CN 202011239839 A CN202011239839 A CN 202011239839A CN 114459586 B CN114459586 B CN 114459586B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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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
- F25D23/00—General constructional features
- F25D23/12—Arrangements of compartments additional to cooling compartments; Combinations of refrigerators with other equipment, e.g. stove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
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Abstract
The invention provides a method for calibrating a weighing device in a freezing and refrigerating device and the freezing and refrigerating device. The weighing device is used for weighing the storage container arranged in the compartment of the freezing and refrigerating device. The calibration method comprises the following steps: acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results changing along with the temperature; acquiring a preset calibration temperature of a weighing device, wherein the weighing device is pre-configured to have a weighing error smaller than an error threshold value at the calibration temperature; determining a weighing result of the weighing device at the calibration temperature according to the weighing sequence, and recording the weighing result as the calibration weight; sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence; and performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the temperature change. The calibration method can finish the calibration of the weighing device in the process that a user uses the freezing and refrigerating device, and saves a large amount of calibration time of manufacturers.
Description
Technical Field
The invention relates to the technical field of weighing device calibration, in particular to a method for calibrating a weighing device in a freezing and refrigerating device and the freezing and refrigerating device.
Background
Generally, the weighing result of the weighing device on the same object changes along with the change of the temperature. For example, the weighing sensor may not weigh the object the same as the actual weight of the object at low temperatures, and the lower the temperature, the greater the difference between the weighing sensor and the actual weight of the object may be. In addition, different weighing devices may suffer from different consequences even in the same low temperature environment. If the errors of each weighing device at different temperatures are calibrated before leaving the factory, a large amount of time needs to be consumed, and the cost is increased.
Disclosure of Invention
In view of the above problems, the present invention has been made to provide a method of calibrating a weighing device in a freezer and a refrigerator that overcomes or at least partially solves the above problems.
It is an object of the present invention to improve the efficiency of calibrating weighing devices.
A further object of the invention is to improve the accuracy of the weighing result of the weighing device.
In particular, the present invention provides a method for calibrating a weighing device in a refrigerating and freezing apparatus, the weighing device being used for weighing a storage container disposed in a compartment of the refrigerating and freezing apparatus, comprising:
acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results changing along with the temperature;
acquiring a preset calibration temperature of a weighing device, wherein the weighing device is pre-configured to have a weighing error smaller than an error threshold value at the calibration temperature;
determining a weighing result of the weighing device at the calibration temperature according to the weighing sequence, and recording the weighing result as the calibration weight;
sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence;
and performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the temperature change.
Optionally, the step of obtaining weighing results corresponding to the weighing apparatus at different temperatures and obtaining a weighing sequence of the weighing results varying with the temperature further includes:
acquiring a temperature rise event of the freezing and refrigerating device, and taking the last sampling temperature in the sampling temperatures before the temperature rise event as an interrupt temperature;
and after the temperature rise event, when the temperature of the freezing and refrigerating device is reduced to the recovery temperature, continuously acquiring the weighing results corresponding to the weighing device at different temperatures, wherein the recovery temperature is the same as the interruption temperature.
Optionally, after the step of continuously acquiring the weighing results of the weighing device at different temperatures, the method further comprises:
judging whether the weighing result of the weighing device corresponding to the recovery temperature is equal to the weighing result corresponding to the interruption temperature or not;
if not, taking each temperature before the interrupt temperature and the corresponding weighing result in the weighing sequence as a first weighing sequence, and taking each temperature after the recovery temperature and the corresponding weighing result as a second weighing sequence.
Optionally, a weighing result of the weighing apparatus at the calibration temperature is determined according to the weighing sequence, and the step of recording as the calibration weight includes:
determining a weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and recording the weighing result as the calibration weight;
and sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence comprises the following steps:
sequentially carrying out error calculation on the weighing results in the first weighing sequence and the calibration weight to obtain a first error sequence;
performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the temperature change, wherein the error function comprises the following steps:
and performing fitting calculation by using the first error sequence to obtain a first error function of the weighing result of the weighing device along with the temperature change.
Optionally, after obtaining the first error function, obtaining a relative error of the weighing device at the interrupt temperature according to the first error function;
obtaining an actual result of the weighing device at the recovery temperature according to the relative error;
and sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence comprises the following steps:
carrying out error calculation on the weighing results in the second weighing sequence and actual results in sequence to obtain a second error sequence;
performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the change of the temperature, wherein the error function comprises the following steps:
and performing fitting calculation by using the second error sequence to obtain a second error function of the weighing result of the weighing device along with the temperature change.
Optionally, after the step of performing a fitting calculation using the error sequence to obtain an error function of the weighing result of the weighing apparatus with respect to temperature variation, the method includes:
and obtaining actual results corresponding to weighing results of the weighing device at different temperatures according to the error function, and enabling the weighing device to display the actual results.
Optionally, after the step of performing fitting calculation using the error sequence to obtain an error function of the weighing result of the weighing apparatus with temperature variation, the method further includes:
and uploading the error function to a cloud platform.
Optionally, the step of sequentially performing error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence includes:
judging whether the difference value between two adjacent error values in the error sequence is greater than a preset threshold value or not;
and if so, determining that the weighing device is damaged.
Optionally, a damage prompt is output after determining that the weighing apparatus is damaged.
According to another aspect of the present invention, there is also provided a freezing and refrigerating apparatus comprising:
a storage chamber;
a storage container located in the freezing chamber;
the weighing device is arranged below the storage container;
a processor; and
and a memory storing a computer program for implementing any one of the above-described methods of calibrating a weighing device in a freezer-refrigerator when the computer program is executed by the processor.
In the calibration method of the weighing device in the freezing and refrigerating device, weighing results corresponding to the weighing device at different temperatures are obtained, and a weighing sequence of the weighing results changing along with the temperature is obtained; determining a weighing result of the weighing device at a calibration temperature according to the weighing sequence, and recording the weighing result as a calibration weight; sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence; fitting calculation is carried out by using the error sequence to obtain an error function of a weighing result of the weighing device along with temperature change; the calibration method improves the measurement accuracy of the weighing device, and can also finish the calibration of the weighing device in the process that a user uses the freezing and refrigerating device, thereby avoiding the calibration of each weighing device before leaving a factory, saving a large amount of calibration time of manufacturers and saving the cost.
Furthermore, after a temperature rise event occurs, when the temperature of the device to be refrigerated is reduced to the recovery temperature, the weighing results corresponding to the weighing device at different temperatures are continuously obtained, so that the processed data volume can be reduced, and the calibration efficiency is improved. In addition, when the freezer-refrigerator is turned on, a relatively rapid rise in temperature may occur within the freezer-refrigerator. When the temperature in the refrigerator rises faster, if the weighing device is not sensitive enough to the temperature, the weighing result of the weighing device in the process of quickly rising the temperature cannot reflect the error corresponding to the temperature in the process of rising the weighing device, so that when the temperature of the refrigerator is reduced to the recovery temperature, the weighing result corresponding to the weighing device at different temperatures is continuously obtained, and the accuracy of the measured error can be ensured.
Further, after the user takes and puts the article, the article measured by the weighing device is not the article before the temperature rise event, and the measured weighing result is not the weighing result of the article before the user takes and puts. Therefore, each temperature before the interruption temperature and the corresponding weighing result in the weighing sequence are used as a first weighing sequence, each temperature after the recovery temperature and the corresponding weighing result are used as a second weighing sequence, and the weighing results corresponding to different articles are distinguished, so that the accuracy of the calculated error is ensured, and the weighing device is accurately calibrated.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily to scale. In the drawings:
FIG. 1 is a flow chart of a method of calibrating a weighing device in a refrigerated and frozen storage unit according to one embodiment of the present invention;
FIG. 2 is a flow chart of a method of calibrating a weighing device in a refrigerated storage unit according to another embodiment of the present invention;
figure 3 is a schematic diagram of a cold storage appliance according to one embodiment of the present invention.
Detailed Description
Fig. 1 is a flow chart of a method of calibrating a weighing device in a refrigerated and frozen storage unit according to one embodiment of the invention. The freezing and refrigerating device can be a refrigerator, an ice chest and the like. The weighing device may be a weighing sensor, and of course, the weighing device may also be other devices that can be used for weighing, and the embodiment of the present invention is not particularly limited thereto. The weighing device is used for weighing the storage container arranged in the compartment of the freezing and refrigerating device. The compartment of the freezing and refrigerating device can be a freezing chamber, a refrigerating chamber and the like. The storage container may be a drawer provided inside the compartment. The calibration method can be applied to the calibration of the weighing device after the factory shipment of the refrigerating and freezing device, for example, during the process of using the refrigerating and freezing device by a user. Referring to fig. 1, the calibration method may include the following steps S102 to S110.
Step S102: and acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results along with temperature changes. The temperature in this step may generally refer to an initial temperature in the freezing and refrigerating apparatus to a set temperature of a user, where the set temperature is generally-18 degrees celsius, and of course, the set temperature may also be another temperature value set by the user, which is not specifically limited in this embodiment of the present invention.
Step S104: a preset calibration temperature of the weighing device is obtained, and the weighing device is pre-configured to have a weighing error smaller than an error threshold value at the calibration temperature. In this step, the preset calibration temperature may be 25 degrees celsius, or 15 degrees celsius, or other temperature that makes the weighing error smaller than the error threshold. The error threshold may also be configured according to actual situations, which is not specifically limited in the embodiment of the present invention.
Step S106: and determining a weighing result of the weighing device at the calibration temperature according to the weighing sequence, and recording the weighing result as the calibration weight.
Step S108: and sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence.
Step S110: and performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the temperature change.
In the embodiment, weighing results corresponding to the weighing device at different temperatures are obtained, and a weighing sequence of the weighing results changing along with the temperature is obtained; determining a weighing result of the weighing device at the calibration temperature according to the weighing sequence, and recording the weighing result as the calibration weight; sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence; fitting calculation is carried out by using the error sequence to obtain an error function of a weighing result of the weighing device along with temperature change; the calibration method improves the accuracy of the measurement of the weighing devices, and completes the calibration of the weighing devices in the process that a user uses the freezing and refrigerating device, thereby avoiding the calibration of each weighing device due to different errors of each weighing device before leaving a factory, saving a large amount of calibration time of manufacturers and saving the cost. The error function described above may be a relative error function.
In an embodiment of the present invention, step S102 may further include acquiring a warming event of the freezer-refrigerator, and using the last sampling temperature of the sampling temperatures before the warming event as the interrupt temperature. And after the temperature rise event, when the temperature of the freezing and refrigerating device is reduced to the recovery temperature, continuously acquiring the corresponding weighing results of the weighing device at different temperatures. The recovery temperature is the same as the interrupt temperature.
In this embodiment, a user may open the freezer-refrigerator to access the articles during use of the freezer-refrigerator. In general, the set temperature in the compartment of the freezer-refrigerator is significantly lower than the outside temperature. For example, when the compartment is a freezer compartment, the temperature setting for the compartment will typically be below-10 degrees celsius, such as-18 degrees celsius or-15 degrees celsius or even-20 degrees celsius. The outside temperature of the freezer-refrigerator will typically be above 10 degrees celsius and the outside temperature of the freezer-refrigerator may typically refer to the temperature of the user's room. After the freezing and refrigerating device is powered on and started, if the set temperature is-18 ℃, in the process of temperature reduction in the compartment, for example, the temperature is reduced to-10 ℃, the freezing and refrigerating device is turned on at this time, the temperature difference between the inside and the outside of the freezing and refrigerating device is large, and when a user takes and places articles in the storage container, gas inside and outside the freezing and refrigerating device exchanges, and the temperature inside the freezing and refrigerating device rises to-5 ℃, for example, namely, the temperature rise event referred to in this embodiment occurs.
After the temperature rise event occurs, if the weighing results corresponding to the weighing device at different temperatures are still continuously obtained before the temperature is reduced to the recovery temperature, a large amount of repeated temperatures can be obtained, and the processed data volume is increased. In addition, when the freezer-refrigerator is turned on, a relatively rapid rise in temperature may occur within the freezer-refrigerator. When the temperature in the freezing and refrigerating device rises faster, if the weighing device is not sensitive enough to the temperature, the weighing result of the weighing device in the process of the temperature rising fast cannot reflect the error corresponding to the temperature in the rising process of the weighing device, therefore, when the temperature of the freezing and refrigerating device is reduced to the recovery temperature, the accuracy of the measured error can be ensured by continuously acquiring the weighing result corresponding to the weighing device at different temperatures.
In an embodiment of the present invention, after the step of continuously obtaining the weighing results corresponding to the weighing devices at different temperatures, it may further be determined whether the weighing result of the weighing device corresponding to the recovery temperature is equal to the weighing result corresponding to the interruption temperature. If not, taking each temperature before the interrupt temperature and the corresponding weighing result in the weighing sequence as a first weighing sequence, and taking each temperature after the recovery temperature and the corresponding weighing result as a second weighing sequence.
In this embodiment, a user may open the freezer-refrigerator to access the articles during use of the freezer-refrigerator. After the user takes and puts the item, the item measured by the weighing device is not the item before the temperature rise event, and the measured weighing result is not the weighing result of the item before the user takes and puts. Therefore, each temperature before the interruption temperature and the corresponding weighing result in the weighing sequence are used as a first weighing sequence, each temperature after the recovery temperature and the corresponding weighing result are used as a second weighing sequence, and the weighing results corresponding to different articles are distinguished, so that the accuracy of the calculated error is ensured, and the weighing device is accurately calibrated.
In an embodiment of the present invention, the determination of the weighing result of the weighing apparatus at the calibration temperature according to the weighing sequence may include: and determining a weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and recording the weighing result as the calibration weight.
And sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence can comprise: and sequentially carrying out error calculation on the weighing results in the first weighing sequence and the calibration weight to obtain a first error sequence.
Using the error sequence to perform a fitting calculation to obtain an error function of the weighing result of the weighing apparatus with respect to temperature variation may include: and performing fitting calculation by using the first error sequence to obtain a first error function of the weighing result of the weighing device along with the temperature change.
After the first error function is obtained, the relative error of the weighing device at the interrupt temperature is obtained according to the first error function. Then, the actual result of the weighing device at the recovery temperature is obtained according to the relative error.
And sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence can comprise: and sequentially carrying out error calculation on the weighing results in the second weighing sequence and the actual results to obtain a second error sequence.
Performing a fitting calculation using the error sequence to obtain an error function of the weighing result of the weighing apparatus with respect to temperature variation may include: and performing fitting calculation by using the second error sequence to obtain a second error function of the weighing result of the weighing device along with the temperature change.
In this embodiment, the second weighing sequence and the first weighing sequence are respectively calculated to obtain respective error sequences and error functions, so that the accuracy of error judgment can be improved.
In an embodiment of the present invention, after step S110, the method may include: and obtaining actual results corresponding to the weighing results of the weighing device at different temperatures according to the error function, and enabling the weighing device to display the actual results.
In the step, the actual results corresponding to the weighing results of the weighing device at different temperatures are obtained according to the error function, and the weighing device displays the actual results, so that the user can know the actual weight measured by the weighing device very intuitively, and the user experience is improved.
In an embodiment of the present invention, after step S110, the method may further include: and uploading the error function to a cloud platform. And uploading the error function of each weighing device to the cloud platform so as to count the errors of the weighing devices.
In one embodiment of the present invention, step S102 may include determining whether a difference between two adjacent error values in the error sequence is greater than a preset threshold. And if so, determining that the weighing device is damaged.
In this embodiment, the preset threshold may be configured according to actual needs, and is not specifically limited herein, for example, the preset threshold may be configured according to a size of the calibration weight, and the larger the calibration weight is, the larger the preset threshold is. In the process of obtaining the weighing results corresponding to the weighing devices at different temperatures, the weighing results corresponding to two adjacent temperatures generally do not have a large difference. And if the difference value between the two adjacent error values is greater than the preset threshold value, determining that the weighing device is damaged, thereby avoiding providing a wrong weighing result. In the process of judging whether the difference value between the two adjacent error values is larger than the preset threshold value, the weights corresponding to the interruption temperature and the recovery temperature in the heating event can be used as non-adjacent weights, the possibility of taking and placing articles by a user is eliminated, and therefore the wrong judgment is avoided.
In one embodiment of the invention, a damage prompt is output after the weighing apparatus is determined to be damaged. The damage prompt message may be output in various ways, for example, the damage prompt message is output to a terminal device bound to the refrigerating and freezing apparatus, or the damage prompt message is output to a display panel of the refrigerating and freezing apparatus. The terminal equipment can be a mobile phone, wearable equipment and the like.
Fig. 2 is a flow chart of a method of calibrating a weighing device in a refrigerated and frozen storage unit according to another embodiment of the invention. Referring to fig. 2, the calibration method may generally include the following steps S202 to S224.
Step S202: and acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results changing along with the temperature.
Step S204: and acquiring a temperature rise event of the freezing and refrigerating device, and taking the last sampling temperature in the sampling temperatures before the temperature rise event as an interrupt temperature.
Step S206: and after the temperature rise event, when the temperature of the freezing and refrigerating device is reduced to the recovery temperature, continuously acquiring the weighing results corresponding to the weighing device at different temperatures, wherein the recovery temperature is the same as the interruption temperature.
Step S208: and judging whether the weighing result of the weighing device corresponding to the recovery temperature is equal to the weighing result corresponding to the interruption temperature.
If yes, the process returns to step S204.
If not, go to step S210: and taking each temperature before the interruption temperature and a weighing result corresponding to the temperature before the interruption temperature in the weighing sequence as a first weighing sequence, and taking each temperature after the recovery temperature and a weighing result corresponding to the temperature after the recovery temperature as a second weighing sequence.
Step S212: and determining a weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and recording the weighing result as the calibration weight.
Step S214: and sequentially carrying out error calculation on the weighing results in the first weighing sequence and the calibration weight to obtain a first error sequence.
Step S216: and performing fitting calculation by using the first error sequence to obtain a first error function of the weighing result of the weighing device along with the temperature change.
Step S218: the relative error of the weighing device at the interrupt temperature is obtained from the first error function.
Step S220: and obtaining the actual result of the weighing device at the recovery temperature according to the relative error.
Step S222: and sequentially carrying out error calculation on the weighing results in the second weighing sequence and the actual results to obtain a second error sequence.
Step S224: and performing fitting calculation by using the second error sequence to obtain a second error function of the weighing result of the weighing device along with the temperature change.
In this embodiment, errors of the weighing devices in a low-temperature environment may be different, and a lot of time is consumed if the weighing devices are respectively verified before shipment. The calibration method improves the measurement accuracy of the weighing device, can also finish the calibration of the weighing device in the process that a user uses the freezing and refrigerating device, avoids the calibration of each weighing device before leaving a factory, saves a large amount of calibration time of a manufacturer, and saves the cost. And taking each temperature after the temperature is recovered and the corresponding weighing result thereof as a second weighing sequence, and distinguishing the weighing results corresponding to different articles, thereby ensuring the accuracy of the calculated error and realizing the accurate calibration of the weighing device.
The present invention will be described in detail with reference to a specific embodiment.
The freezing and refrigerating device can be a refrigerator, the storage chamber can be a refrigerating chamber, and the storage container can be a drawer arranged in the refrigerating chamber. And after the refrigerator is started, recording the corresponding calibration weight W1 of the weighing device at the calibration temperature T1. When the temperature is reduced to the set temperature Tn, the weighing device weighs the result Wn correspondingly. The set temperature Tn is less than the calibration temperature T1. In the process that the temperature of the refrigerating chamber is reduced to the set temperature Tn from the calibration temperature T1, the corresponding weighing results of the weighing device at different temperatures can be obtained. Specifically, for example, the second weighing result W2 corresponding to the second temperature T2; a third weighing result W3 corresponding to the third temperature T3; fourth weighing result W4 corresponding to fourth temperature T4, etc. The second temperature T2 to the fourth temperature T4 decrease in sequence. And obtaining an error function according to the temperature change from the calibration temperature T1 to the set temperature Tn and the change from the calibration weight W1 to the weighing result Wn. The error function may be a relative error function.
The present solution is described in detail below with reference to another embodiment.
The freezing and refrigerating device can be a refrigerator, the storage chamber can be a refrigerating chamber, and the storage container can be a drawer arranged in the refrigerating chamber. And after the refrigerator is started, recording the corresponding calibration weight W1 of the weighing device at the calibration temperature T1. When the temperature is reduced to the set temperature Tn, the weighing device weighs the result Wn correspondingly. The set temperature Tn is less than the calibration temperature T1. In the process that the temperature of the refrigerating chamber is reduced to the set temperature Tn from the calibration temperature T1, the corresponding weighing results of the weighing device at different temperatures can be obtained. Specifically, for example, the second weighing result W2 corresponding to the second temperature T2; a third weighing result W3 corresponding to the third temperature T3; fourth weighing result W4 corresponding to fourth temperature T4, etc.
When the temperature drops to the fourth temperature T4, if the refrigerator is opened, high-temperature outside air is exchanged with low-temperature outside air in the refrigerating compartment, and the temperature of the refrigerating compartment rises, i.e., a rising event occurs. The fourth temperature T4 may be used as the interrupt temperature. Specifically, for example, the temperature is increased to the third temperature T3. After the refrigerator is opened, the user is likely to take and put the articles. Therefore, after the temperature increase event, when the temperature is decreased again to the recovery temperature T4 equal to the fourth temperature T4, it is determined whether the weighing result W4 corresponding to the recovery temperature T4 is equal to the fourth weighing result W4 corresponding to the interruption temperature T4. And if not, taking the calibration temperature T1 to the interruption temperature T4 and the corresponding weighing result as a first weighing sequence.
After the temperature T4 is recovered, continuously acquiring a fifth weighing result W5 corresponding to the fifth temperature T5; a sixth weighing result W6 corresponding to the sixth temperature T6; a seventh weighing result W7 corresponding to the seventh temperature T7, etc. The fifth temperature T5 to the seventh temperature T7 decrease in order.
And taking each temperature between the recovery temperature T4 and the set temperature Tn and the corresponding weighing result as a second weighing sequence.
And then, a first error sequence and a second error sequence are obtained according to the first weighing sequence and the second weighing sequence respectively, and a first error function and a second error function are obtained according to the first error sequence and the second error sequence.
Of course, after the temperature rise event, when the temperature is decreased to the recovery temperature T4 equal to the fourth temperature T4 again, in the process of continuously obtaining the weighing result corresponding to the temperature, the temperature rise event may be continuously obtained, and whether the user takes and places the article when the temperature rise event occurs may also be determined, which is not described again here.
Referring to fig. 3, based on the same concept, the invention also provides a freezing and refrigerating device 300. The freezer-refrigerator 300 may include a storage compartment 301, a storage container 302, a weighing device 303, a processor 304, and a memory 305. Wherein the storage container 302 is positioned in the storage chamber 301, and the weighing device 303 is arranged below the storage container 302. The memory 305 stores a computer program. The computer program is adapted to be executed by the processor 304 to implement the method of calibrating the weighing device 303 in the cold storage device 300 according to any of the embodiments described above. The number of the weighing devices 303 may be 1, or may be plural, and this is not specifically limited in the embodiment of the present invention.
The above embodiments can be combined arbitrarily, and according to any one of the above preferred embodiments or a combination of multiple preferred embodiments, the embodiments of the present invention can achieve the following beneficial effects:
the calibration method improves the measurement accuracy of the weighing device, and can also finish the calibration of the weighing device in the process that a user uses the freezing and refrigerating device, thereby avoiding the calibration of each weighing device before leaving a factory, saving a large amount of calibration time of manufacturers and saving the cost.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (8)
1. A method of calibrating a weighing device in a refrigeration chiller for weighing a storage container disposed in a compartment of the refrigeration chiller, comprising:
acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results changing along with the temperature; the temperature refers to the initial temperature in the freezing and refrigerating device to the set temperature of a user;
acquiring a preset calibration temperature of the weighing device, wherein the weighing device is pre-configured to have a weighing error smaller than an error threshold value at the calibration temperature;
determining a weighing result of the weighing device at the calibration temperature according to the weighing sequence, and recording the weighing result as a calibration weight;
sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence;
fitting calculation is carried out by using the error sequence to obtain an error function of the weighing result of the weighing device along with temperature change;
wherein, the step of obtaining the weighing results corresponding to the weighing device at different temperatures and obtaining the weighing sequence of the weighing results changing with the temperature further comprises:
acquiring a temperature rise event of the freezing and refrigerating device, and taking the last sampling temperature in the sampling temperatures before the temperature rise event as an interrupt temperature;
after the temperature rise event, when the temperature of the freezing and refrigerating device is reduced to a recovery temperature, continuously acquiring weighing results corresponding to the weighing device at different temperatures, wherein the recovery temperature is the same as the interruption temperature;
after the step of continuously acquiring the weighing results corresponding to the weighing devices at different temperatures, the method further comprises the following steps:
judging whether the weighing result of the weighing device corresponding to the recovery temperature is equal to the weighing result corresponding to the interruption temperature or not;
if not, taking each temperature before the interruption temperature and the corresponding weighing result in the weighing sequence as a first weighing sequence, and taking each temperature after the recovery temperature and the corresponding weighing result as a second weighing sequence.
2. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 1, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
The step of determining the weighing result of the weighing device at the calibration temperature according to the weighing sequence and recording the weighing result as the calibration weight comprises the following steps:
determining a weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and recording the weighing result as a calibration weight;
and sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence comprises:
sequentially carrying out error calculation on the weighing results in the first weighing sequence and the calibration weight to obtain a first error sequence;
performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the change of the temperature, wherein the error function comprises the following steps:
and performing fitting calculation by using the first error sequence to obtain a first error function of the weighing result of the weighing device along with the temperature change.
3. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 2, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
After the first error function is obtained, obtaining the relative error of the weighing device at the interruption temperature according to the first error function;
obtaining an actual result of the weighing device at the recovery temperature according to the relative error;
and sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence, wherein the error sequence comprises the following steps:
carrying out error calculation on the weighing results in the second weighing sequence and the actual results in sequence to obtain a second error sequence;
performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the change of the temperature, wherein the error function comprises the following steps:
and performing fitting calculation by using the second error sequence to obtain a second error function of the weighing result of the weighing device along with the temperature change.
4. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 1, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
After the step of performing fitting calculation by using the error sequence to obtain an error function of the weighing result of the weighing device along with the change of the temperature, the method comprises the following steps:
and obtaining actual results corresponding to weighing results of the weighing device at different temperatures according to the error function, and enabling the weighing device to display the actual results.
5. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 1, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
After the step of performing fitting calculation by using the error sequence to obtain an error function of a weighing result of the weighing device along with temperature change, the method further comprises the following steps:
and uploading the error function to a cloud platform.
6. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 1, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
The step of sequentially carrying out error calculation on the weighing results in the weighing sequence and the calibration weight to obtain an error sequence comprises the following steps:
judging whether the difference value between two adjacent error values in the error sequence is greater than a preset threshold value or not;
and if so, determining that the weighing device is damaged.
7. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 6, wherein the method comprises the step of measuring the weight of the weighing device in the refrigerating and freezing apparatus
And outputting damage prompt information after determining that the weighing device is damaged.
8. A cold storage unit comprising:
a storage chamber;
a storage container located in the freezing chamber;
the weighing device is arranged below the storage container;
a processor; and
a memory storing a computer program for implementing a method of calibrating a weighing device in a cold storage device according to any one of claims 1-7 when executed by the processor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011239839.2A CN114459586B (en) | 2020-11-09 | 2020-11-09 | Method for calibrating a weighing device in a freezer and refrigerator and freezer and refrigerator |
| PCT/CN2021/127659 WO2022095806A1 (en) | 2020-11-09 | 2021-10-29 | Calibration method for weighing device in freezing and refrigerating device, and freezing and refrigerating device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011239839.2A CN114459586B (en) | 2020-11-09 | 2020-11-09 | Method for calibrating a weighing device in a freezer and refrigerator and freezer and refrigerator |
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| CN114459586A CN114459586A (en) | 2022-05-10 |
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| WO (1) | WO2022095806A1 (en) |
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| CN114459586A (en) | 2022-05-10 |
| WO2022095806A1 (en) | 2022-05-12 |
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