CN114459586A - Calibration method of weighing device in refrigerating device and refrigerating device - Google Patents

Abstract

The invention provides a calibration method of a weighing device in a freezing and refrigerating device and a freezing and refrigerating device. The weighing device is used for weighing the storage container provided in the compartment of the freezing and refrigerating device. The calibration method includes: acquiring corresponding weighing results of a weighing device at different temperatures, and obtaining a weighing sequence in which the weighing results vary with temperature; acquiring a preset calibration temperature of the weighing device, and the weighing device is preconfigured to be calibrated The weighing error at the temperature is less than the error threshold; the weighing result of the weighing device at the calibration temperature is determined according to the weighing sequence, and marked as the calibration weight; the weighing results in the weighing sequence and the calibration weight are calculated in turn, The error sequence is obtained; the error sequence is used for fitting calculation to obtain the error function of the weighing result of the weighing device changing with temperature. The calibration method can complete the calibration of the weighing device during the user's use of the freezing and refrigerating device, which saves a lot of calibration time for the manufacturer.

Description

Calibration method of weighing device in freezer and freezer device and freezer and freezer device

technical field

The invention relates to the technical field of weighing device calibration, in particular to a calibration method of a weighing device in a freezing and refrigerating device and a freezing and refrigerating device.

Background technique

Under normal circumstances, the weighing result of the weighing device for the same object will change with the change of temperature. For example, the weighing result of the load cell at low temperature is not the same as the actual weight of the object, and the lower the temperature, the greater the difference between the weighing result of the load cell and the actual weight of the object may be. In addition, different weighing devices may have different results even in the same low temperature environment. If the errors of each weighing device at different temperatures are calibrated before leaving the factory, it will take a lot of time and increase the cost.

SUMMARY OF THE INVENTION

In view of the above problems, the present invention is proposed to provide a method for calibrating a weighing device in a freezer-refrigerator device and a freezer-refrigerator device that overcome the above-mentioned problems or at least partially solve the above-mentioned problems.

An object of the present invention is to improve the efficiency of calibrating weighing devices.

A further object of the present invention is to improve the accuracy of the weighing results of the weighing device.

In particular, the present invention provides a method for calibrating a weighing device in a freezing and refrigerating device, wherein the weighing device is used to weigh a storage container arranged in a compartment of the freezing and refrigerating device, including:

Obtain the corresponding weighing results of the weighing device at different temperatures, and obtain the weighing sequence in which the weighing results change with temperature;

obtaining a preset calibration temperature of the weighing device, where the weighing device is preconfigured so that the weighing error at the calibration temperature is less than an error threshold;

Determine the weighing result of the weighing device at the calibration temperature according to the weighing sequence, and mark it as the calibration weight;

Carry out the error calculation between the weighing results in the weighing sequence and the calibration weight in turn to obtain the error sequence;

The error sequence is used for fitting calculation, and the error function of the weighing result of the weighing device with temperature changes is obtained.

Optionally, the step of acquiring the corresponding weighing results of the weighing device at different temperatures, and obtaining the weighing sequence in which the weighing results vary with temperature further includes:

Acquire the heating event of the refrigerating and refrigerating device, and use the last sampling temperature in the sampling temperature before the heating event as the interruption temperature;

After the heating event, when the temperature of the freezing and refrigerating device drops to the recovery temperature, the corresponding weighing results of the weighing device at different temperatures are continued to be obtained, and the recovery temperature is the same as the interruption temperature.

Optionally, after the step of continuing to obtain the corresponding weighing results of the weighing device under different temperatures, the method further includes:

Determine 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, take each temperature before the interruption temperature and its corresponding weighing result as the first weighing sequence, and take each temperature after the recovery temperature and its corresponding weighing result as the second weighing sequence.

Optionally, the weighing result of the weighing device at the calibration temperature is determined according to the weighing sequence, and the step of marking the calibration weight includes:

Determine the weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and mark it as the calibration weight;

Carry out error calculation between the weighing results in the weighing sequence and the calibration weight in turn, and the obtained error sequence includes:

Perform error calculation on the weighing results in the first weighing sequence and the calibration weight in turn to obtain the first error sequence;

Using the error sequence for fitting calculation, the error function of the weighing result of the weighing device as a function of temperature is obtained, including:

The fitting calculation is performed using the first error sequence to obtain the first error function of the weighing result of the weighing device varying with temperature.

Optionally, after obtaining the first error function, obtain the relative error of the weighing device at the interruption temperature according to the first error function;

Obtain the actual result of the weighing device at the recovery temperature according to the relative error;

Carry out error calculation between the weighing results in the weighing sequence and the calibration weight in turn, and the obtained error sequence includes:

Carry out error calculation between the weighing results in the second weighing sequence and the actual results in turn to obtain the second error sequence;

Using the error sequence for fitting calculation, the error function of the weighing result of the weighing device as a function of temperature is obtained, including:

The fitting calculation is performed using the second error sequence to obtain a second error function of the weighing result of the weighing device varying with temperature.

Optionally, after the step of using the error sequence to perform fitting calculation to obtain an error function of the weighing result of the weighing device varying with temperature, the method includes:

According to the error function, the actual results corresponding to the weighing results of the weighing device at different temperatures are obtained, and the weighing device is made to display the actual results.

Optionally, after the step of performing fitting calculation by using the error sequence to obtain the error function of the weighing result of the weighing device varying with temperature, the method further includes:

Upload the error function to the cloud platform.

Optionally, performing error calculation on the weighing results in the weighing sequence and the calibration weight in turn, and the steps of obtaining the error sequence include:

Judging whether the difference between two adjacent error values in the error sequence is greater than a preset threshold;

If it is greater than that, it is determined that the weighing device is damaged.

Optionally, after determining that the weighing device is damaged, output damage prompt information.

According to another aspect of the present invention, there is also provided a freezing and refrigerating device, comprising:

Storage Room;

storage containers, located in the freezer compartment;

A weighing device is arranged below the storage container;

processor; and

The memory stores a computer program, and when the computer program is executed by the processor, is used to implement any one of the above-mentioned calibration methods of the weighing device in the refrigerating device.

In the method for calibrating a weighing device in a freezing and refrigerating device of the present invention, the corresponding weighing results of the weighing device at different temperatures are obtained, and a weighing sequence in which the weighing results vary with temperature is obtained; the weighing sequence is determined according to the weighing sequence. The weighing result of the device at the calibration temperature is marked as the calibration weight; the error calculation is carried out between the weighing results in the weighing sequence and the calibration weight in turn to obtain the error sequence; the error sequence is used for fitting calculation to obtain the scale of the weighing device. The error function of the weighing result changes with temperature; this calibration method not only improves the measurement accuracy of the weighing device, but also can complete the calibration of the weighing device during the user's use of the refrigeration device, avoiding the need to weigh each weighing device before leaving the factory. The device is calibrated, which saves the manufacturer a lot of calibration time and costs.

Further, when a temperature rise event occurs, when the temperature of the refrigeration device to be refrigerated drops to the recovery temperature, continuing to obtain the corresponding weighing results of the weighing device at different temperatures can reduce the amount of processed data and improve the efficiency of calibration. In addition, when the freezer-refrigerator is opened, the temperature inside it may increase rapidly. When the internal temperature rises rapidly, if the weighing device is not sensitive enough to the temperature, the weighing result of the weighing device in the process of rapid temperature rise cannot reflect the corresponding temperature of the weighing device during the rising process. Therefore, when the temperature of the freezing and refrigerating device drops to the recovery temperature, continuing to obtain the corresponding weighing results of the weighing device at different temperatures can ensure the accuracy of the measurement error.

Further, after the user has picked up and placed the item, the item measured by the weighing device is not the item before the heating event, and the measured weighing result is not the weighing result of the item before the user has picked up and placed. Therefore, in the weighing sequence, the temperatures before the interruption temperature and their corresponding weighing results are taken as the first weighing sequence, and the temperatures after the recovery temperature and their corresponding weighing results are taken as the second weighing sequence. The corresponding weighing results of the items are distinguished, so as to ensure the accuracy of the calculated error and realize the accurate calibration of the weighing device.

The above and other objects, advantages and features of the present invention will be more apparent to those skilled in the art from the following detailed description of the specific embodiments of the present invention in conjunction with the accompanying drawings.

Description of drawings

Hereinafter, some specific embodiments of the present invention will be described in detail by way of example and not limitation with reference to the accompanying drawings. The same reference numbers in the figures designate the same or similar parts or parts. It will be understood by those skilled in the art that the drawings are not necessarily to scale. In the attached picture:

1 is a flowchart of a calibration method of a weighing device in a refrigerating and refrigerating device according to an embodiment of the present invention;

2 is a flowchart of a calibration method for a weighing device in a refrigerating and refrigerating device according to another embodiment of the present invention;

FIG. 3 is a schematic diagram of a freezing and refrigerating apparatus according to an embodiment of the present invention.

Detailed ways

FIG. 1 is a flowchart of a calibration method of a weighing device in a refrigerating and refrigerating device according to an embodiment of the present invention. The freezing and refrigerating device may be a refrigerator, a freezer, or the like. The weighing device may be a weighing sensor. Of course, the weighing device may also be other devices that can be used for weighing, which is not specifically limited in this embodiment of the present invention. The weighing device is used for weighing the storage container provided in the compartment of the freezing and refrigerating device. The compartments of the freezing and refrigerating apparatus may be a freezing compartment, a refrigerating compartment, and the like. The storage container may be a drawer provided inside the compartment. The calibration method can be applied to the refrigerating and refrigerating device after it leaves the factory, for example, to calibrate the weighing device during the user's use of the refrigerating and refrigerating device. Referring to FIG. 1, the calibration method may include the following steps S102 to S110.

Step S102: Acquire corresponding weighing results of the weighing device at different temperatures, and obtain a weighing sequence in which the weighing results vary with temperature. The temperature in this step can generally refer to the initial temperature in the freezing and refrigerating device to the set temperature of the user, and the set temperature is generally -18 degrees Celsius. Of course, the set temperature can also be other temperature values set by the user. The present invention implements The example does not specifically limit this.

Step S104: Acquire a preset calibration temperature of the weighing device, and the weighing device is preconfigured so that the weighing error at the calibration temperature is less than an error threshold. In this step, the preset calibration temperature may be 25 degrees Celsius, or 15 degrees Celsius or other temperatures that make the weighing error less than the error threshold. The error threshold may also be configured according to the actual situation, which is not specifically limited in this embodiment of the present invention.

Step S106: Determine the weighing result of the weighing device at the calibration temperature according to the weighing sequence, and mark it as the calibration weight.

Step S108: Perform error calculation between the weighing results in the weighing sequence and the calibration weight in sequence to obtain an error sequence.

Step S110: Perform fitting calculation using the error sequence to obtain an error function of the weighing result of the weighing device changing with temperature.

In this embodiment, the corresponding weighing results of the weighing device at different temperatures are obtained, and a weighing sequence in which the weighing results vary with temperature is obtained; the weighing results of the weighing device at the calibration temperature are determined according to the weighing sequence, Mark it as the calibration weight; carry out the error calculation between the weighing results in the weighing sequence and the calibration weight in turn to obtain the error sequence; use the error sequence for fitting calculation to obtain the error function of the weighing result of the weighing device changing with temperature; the The calibration method improves the measurement accuracy of the weighing device, and completes the calibration of the weighing device during the user's use of the refrigerating device, avoiding the calibration of each weighing device due to the different errors of each weighing device before leaving the factory. , which saves the manufacturer a lot of calibration time and cost. The above-mentioned error function may be a relative error function.

In an embodiment of the present invention, step S102 may further include acquiring a heating event of the refrigerating and refrigerating device, and using the last sampling temperature among the sampling temperatures before the heating event as the interruption temperature. After the heating event, when the temperature of the freezing and refrigerating device drops to the recovery temperature, continue to obtain the corresponding weighing results of the weighing device at different temperatures. The recovery temperature is the same as the interruption temperature.

In this embodiment, the user may open the freezing and refrigerating device to pick up and place items during the use of the freezing and refrigerating device. Generally, 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, the set temperature of the compartment is generally lower than -10 degrees Celsius, such as -18 degrees Celsius or -15 degrees Celsius or even -20 degrees Celsius. The external temperature of the refrigerating device is generally higher than 10 degrees Celsius, and the external temperature of the refrigerating device can generally refer to the indoor temperature of the user. When the freezer-refrigerator is powered on, assuming that the set temperature is -18 degrees Celsius, and the temperature in the compartment drops to -10 degrees Celsius, for example, the freezer-refrigerator is turned on, and the inside and outside of the freezer-refrigerator are turned on. The temperature difference is large. During the process of taking and placing the storage container items, the internal and external gases of the freezing and refrigerating device are exchanged, and the internal temperature will rise, for example, to -5 degrees Celsius, which is the present embodiment. The referred warming event.

After a temperature rise event occurs, if the weighing results corresponding to the weighing device at different temperatures are still obtained before the temperature drops to the recovery temperature, a large number of repeated temperatures will be obtained and the amount of processed data will be increased. When the temperature of the device drops to the recovery temperature, continuing to obtain the corresponding weighing results of the weighing device at different temperatures can reduce the amount of processed data and improve the efficiency of calibration. In addition, when the freezer-refrigerator is opened, the temperature inside it may increase rapidly. When the temperature inside the refrigerating device rises rapidly, if the weighing device is not sensitive enough to the temperature, the weighing result of the weighing device during the process of rapid temperature rise cannot reflect the temperature of the weighing device during the rising process. Therefore, when the temperature of the freezing and refrigerating device drops to the recovery temperature, continuing to obtain the corresponding weighing results of the weighing device at different temperatures can ensure the accuracy of the measurement error.

In an embodiment of the present invention, after the step of continuing to acquire the weighing results corresponding to the weighing device at different temperatures, the method may further include 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 not, take each temperature before the interruption temperature and its corresponding weighing result as the first weighing sequence, and take each temperature after the recovery temperature and its corresponding weighing result as the second weighing sequence.

In this embodiment, the user may open the freezing and refrigerating device to pick up and place items during the use of the freezing and refrigerating device. After the user has picked up and placed the item, the item measured by the weighing device is not the item before the heating event, and the measured weighing result is not the weighing result of the item before the user has picked up and placed. Therefore, in the weighing sequence, the temperatures before the interruption temperature and their corresponding weighing results are taken as the first weighing sequence, and the temperatures after the recovery temperature and their corresponding weighing results are taken as the second weighing sequence. The corresponding weighing results of the items are distinguished, so as to ensure the accuracy of the calculated error and realize the accurate calibration of the weighing device.

In an embodiment of the present invention, the weighing result of the weighing device at the calibration temperature is determined according to the weighing sequence, and the step of marking the calibration weight may include: determining the weighing device at the calibration temperature according to the first weighing sequence The weighing result is marked as the calibration weight.

Performing error calculation between the weighing results in the weighing sequence and the calibration weight in sequence, and obtaining the error sequence may include: performing error calculation between the weighing results in the first weighing sequence and the calibration weight in sequence to obtain the first error sequence.

Using the error sequence to perform fitting calculation to obtain the error function of the weighing result of the weighing device as a function of temperature may include: using the first error sequence to perform fitting calculation to obtain the first error of the weighing result of the weighing device as a function of temperature function.

After the first error function is obtained, the relative error of the weighing device at the interruption 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.

Performing error calculation between the weighing results in the weighing sequence and the calibration weight in sequence, and obtaining the error sequence may include: performing error calculation between the weighing results in the second weighing sequence and the actual results in sequence to obtain the second error sequence.

Using the error sequence to perform fitting calculation to obtain the error function of the weighing result of the weighing device as a function of temperature may include: using the second error sequence to perform fitting calculation to obtain the second error of the weighing result of the weighing device as a function of temperature function.

In this embodiment, the second weighing sequence and the first weighing sequence are respectively calculated to obtain their respective error sequences and error functions, which can improve the accuracy of error judgment.

In an embodiment of the present invention, after step S110, it may include: obtaining actual results corresponding to the weighing results of the weighing device at different temperatures according to the error function, and causing the weighing device to display the actual results.

In this 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 is made to display the actual results, so that the user can intuitively understand the actual weight measured by the weighing device, Improved user experience.

In an embodiment of the present invention, after step S110, the method may further include: uploading the error function to the cloud platform. Upload the error function of each weighing device to the cloud platform to count the errors of each weighing device.

In one implementation of the present invention, step S102 may include judging whether the difference between two adjacent error values in the error sequence is greater than a preset threshold. If it is greater than that, it is determined that the weighing device is damaged.

In this embodiment, the preset threshold can be configured according to actual needs, which is not specifically limited here. For example, it can be configured according to the size of the calibration weight. The larger the calibration weight, the larger the preset threshold. In the process of obtaining the corresponding weighing results of the weighing device at different temperatures, there is generally no significant difference between the weighing results corresponding to two adjacent temperatures. If the difference between two adjacent error values is greater than a preset threshold, it is determined that the weighing device is damaged, thereby avoiding providing an erroneous weighing result. In the process of judging whether the difference between two adjacent error values is greater than the preset threshold, the weight corresponding to the interrupted temperature and the recovery temperature in the heating event can be regarded as the non-adjacent weight, excluding the possibility of the user picking and placing items , so as to avoid erroneous judgments.

In an implementation of the present invention, after it is determined that the weighing device is damaged, damage prompt information is output. There are various ways of outputting damage prompt information, for example, outputting prompt information to a terminal device bound to the freezing and refrigerating apparatus, or outputting prompt information to a display panel of the freezing and refrigerating apparatus. The terminal device can be a mobile phone, a wearable device, etc.

FIG. 2 is a flowchart of a calibration method of a weighing device in a refrigerating device according to another embodiment of the present invention. Referring to FIG. 2 , the calibration method may generally include the following steps S202 to S224.

Step S202: Acquire corresponding weighing results of the weighing device at different temperatures, and obtain a weighing sequence in which the weighing results vary with temperature.

Step S204: Acquire a temperature rise event of the refrigerating and refrigerating apparatus, and use the last sampling temperature among the sampling temperatures before the temperature rise event as the interruption temperature.

Step S206: After the temperature rise event, when the temperature of the freezing and refrigerating device drops to the recovery temperature, continue to obtain weighing results corresponding to the weighing device at different temperatures, and the recovery temperature is the same as the interruption temperature.

Step S208: Determine 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, return to step S204.

If no, go to step S210: take each temperature and its corresponding weighing result before the interrupted temperature in the weighing sequence as the first weighing sequence, and take each temperature after the recovery temperature and its corresponding weighing result as the second weighing sequence re-sequence.

Step S212: Determine the weighing result of the weighing device at the calibration temperature according to the first weighing sequence, and mark it as the calibration weight.

Step S214: Perform error calculation between the weighing results in the first weighing sequence and the calibration weight in sequence to obtain a first error sequence.

Step S216: Perform fitting calculation using the first error sequence to obtain a first error function of the weighing result of the weighing device changing with temperature.

Step S218: Obtain the relative error of the weighing device at the interruption temperature according to the first error function.

Step S220: Obtain the actual result of the weighing device at the recovery temperature according to the relative error.

Step S222: Perform error calculation between the weighing results in the second weighing sequence and the actual results in sequence to obtain a second error sequence.

Step S224: Perform fitting calculation using the second error sequence to obtain a second error function of the weighing result of the weighing device varying with temperature.

In this embodiment, the errors of each weighing device in a low temperature environment may not be the same. If each weighing device is separately calibrated before leaving the factory, it will take a lot of time. The calibration method not only improves the measurement accuracy of the weighing device, but also completes the calibration of the weighing device during the user's use of the refrigerating and refrigerating device, avoiding the need to calibrate each weighing device before leaving the factory and saving a lot of money for the manufacturer. Calibration time and cost savings. Each temperature after the temperature recovery and its corresponding weighing results are used as the second weighing sequence, and the corresponding weighing results of different items are distinguished, thereby ensuring the accuracy of the calculated error and realizing the accurate calibration of the weighing device.

The present solution is described in detail below with a specific embodiment.

The freezing and refrigerating apparatus may be a refrigerator, the storage compartment may be a refrigerating compartment, and the storage container may be a drawer provided in the refrigerating compartment. After the refrigerator is started, record the corresponding calibrated weight W1 of the weighing device at the calibrated temperature T1. When the temperature drops to the set temperature Tn, the weighing result Wn corresponding to the weighing device. The set temperature Tn is lower than the calibration temperature T1. In the process that the temperature of the refrigerating chamber is lowered from the calibration temperature T1 to the set temperature Tn, the corresponding weighing results of the weighing device at different temperatures can also be obtained. Specifically, for example, the second weighing result W2 corresponding to the second temperature T2; the third weighing result W3 corresponding to the third temperature T3; the fourth weighing result W4 corresponding to the fourth temperature T4, and so on. The second temperature T2 to the fourth temperature T4 are sequentially decreased. The error function is obtained 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 will be described in detail below with another specific embodiment.

The freezing and refrigerating apparatus may be a refrigerator, the storage compartment may be a refrigerating compartment, and the storage container may be a drawer provided in the refrigerating compartment. After the refrigerator is started, record the corresponding calibrated weight W1 of the weighing device at the calibrated temperature T1. When the temperature drops to the set temperature Tn, the weighing result Wn corresponding to the weighing device. The set temperature Tn is lower than the calibration temperature T1. In the process that the temperature of the refrigerating chamber is lowered from the calibration temperature T1 to the set temperature Tn, the corresponding weighing results of the weighing device at different temperatures can also be obtained. Specifically, for example, the second weighing result W2 corresponding to the second temperature T2; the third weighing result W3 corresponding to the third temperature T3; the fourth weighing result W4 corresponding to the fourth temperature T4, and so on.

When the temperature drops to the fourth temperature T4, if the refrigerator is opened, the high temperature gas outside and the low temperature gas in the refrigerating chamber will be exchanged, and the temperature of the refrigerating chamber will increase, that is, a rise event. The fourth temperature T4 may serve as the interruption temperature. Specifically, for example, the temperature is raised to the third temperature T3. After the refrigerator is opened, the user is likely to pick and place items. Therefore, after the temperature rise event, if the temperature drops to the recovery temperature T4*, which is equal to the fourth temperature T4, it is determined that the weighing result W4 corresponding to the recovery temperature T4* * the fourth weighing result W4 corresponding to the interruption temperature T4 are equal. If they are not equal, take the calibration temperature T1 to the interruption temperature T4 and their corresponding weighing results as the first weighing sequence.

And, after the recovery temperature T4*, continue to obtain the fifth weighing result W5 corresponding to the fifth temperature T5; the sixth weighing result W6 corresponding to the sixth temperature T6; the seventh weighing result W7 corresponding to the seventh temperature T7, etc. . The fifth temperature T5 to the seventh temperature T7 are sequentially decreased.

Each temperature between the recovery temperature T4* and the set temperature Tn and its corresponding weighing result are taken as the second weighing sequence.

Then, the first error sequence and the second error sequence are obtained according to the first weighing sequence and the second weighing sequence, respectively, and the first error function and the 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 drops to the recovery temperature T4* equal to the fourth temperature T4 again, in the process of continuing to obtain the weighing result corresponding to the temperature, it is also possible to continue to obtain the temperature rise event and determine when the temperature rise event occurs Whether the user picks up and places the item will not be repeated here.

Referring to FIG. 3 , based on the same concept, the present invention also provides a freezing and refrigerating device 300 . The freezing and refrigerating device 300 may include a storage compartment 301 , a storage container 302 , a weighing device 303 , a processor 304 and a memory 305 . The storage container 302 is located in the storage room 301 , and the weighing device 303 is disposed below the storage container 302 . The memory 305 stores computer programs. When the computer program is executed by the processor 304, it is used to realize the calibration method of the weighing device 303 in the freezing and refrigerating device 300 in any of the above embodiments. The quantity of the weighing device 303 may be one or multiple, which is not specifically limited in the embodiment of the present invention.

The above-mentioned embodiments can be combined arbitrarily. According to any one of the above-mentioned preferred embodiments or a combination of multiple preferred embodiments, the embodiments of the present invention can achieve the following beneficial effects:

The calibration method not only improves the measurement accuracy of the weighing device, but also completes the calibration of the weighing device during the user's use of the refrigerating and refrigerating device, avoiding the need to calibrate each weighing device before leaving the factory and saving a lot of money for the manufacturer. Calibration time and cost savings.

By now, those skilled in the art will recognize that, although various exemplary embodiments of the present invention have been illustrated and described in detail herein, the present invention may still be implemented in accordance with the present disclosure without departing from the spirit and scope of the present invention. The content directly determines or derives many other variations or modifications consistent with the principles of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (10)

1. A method of calibrating a weighing device in a freezer-refrigerator for weighing a storage container disposed in a compartment of the freezer-refrigerator, comprising:

acquiring corresponding weighing results of the weighing device at different temperatures to obtain a weighing sequence of the weighing results along with temperature changes;

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;

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.

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 obtaining the weighing results corresponding to the weighing device at different temperatures and obtaining the weighing sequence of the weighing results along with the temperature change 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;

and 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.

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 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.

4. The method of calibrating a weighing device in a cold storage and freezer unit as claimed in claim 3 wherein

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.

5. The method for calibrating a weighing device in a refrigerating and freezing apparatus according to claim 4, wherein the method for calibrating a weighing device in a refrigerating and freezing apparatus according to the invention

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:

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.

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

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.

7. The method of calibrating a weighing device in a cold storage and freezer unit as claimed in claim 1 wherein

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.

8. 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.

9. The method for calibrating a weighing device in a refrigerated storage unit of claim 8 wherein the method further comprises the step of measuring the weight of the weighing device

And outputting damage prompt information after determining that the weighing device is damaged.

10. 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 1-9 when executed by the processor.

Images