CN111238624A - Object weight measuring method, weighing device and readable storage medium - Google Patents
Object weight measuring method, weighing device and readable storage medium Download PDFInfo
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- CN111238624A CN111238624A CN202010108077.6A CN202010108077A CN111238624A CN 111238624 A CN111238624 A CN 111238624A CN 202010108077 A CN202010108077 A CN 202010108077A CN 111238624 A CN111238624 A CN 111238624A
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- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
Abstract
The application provides a method for measuring the weight of an object, a weighing device and a readable storage medium, wherein the measuring method comprises the following steps: determining a weighing error rate based on the no-load weight of the weighing device when the object to be weighed is not placed and a preset standard no-load weight; determining the weight of the object to be weighed based on the total weighing weight and the no-load weight when the object to be weighed is placed; determining a conversion parameter between the weighing object weight and the actual object weight of the object to be weighed corresponding to the target error rate value range to which the weighing error rate belongs; and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient. Therefore, the conversion relation between the weighing weight of the object to be weighed and the actual weight can be determined in a targeted manner during weighing, the weighing weight is calibrated according to the conversion relation, the object weight is obtained, and the accuracy of measuring the object weight of the object to be weighed is improved.
Description
Technical Field
The present disclosure relates to the field of measurement and calibration technologies, and in particular, to a method for measuring a weight of an object, a weighing apparatus, and a readable storage medium.
Background
When the weight of an object is weighed, the electronic scale needs to be used for weighing, a core device of the electronic scale is the weighing sensor, a certain error exists between most of the weighing sensors and the actual weight of the object during weighing, and the error calibration needs to be carried out on the weighing sensors of the electronic scale before weighing.
At present, the calibration of the weighing error is to calibrate the electronic scale once according to the weighing of an object with known weight before the electronic scale is used for the first time, determine the error of the electronic scale, and calculate the actual weight of the object to be measured according to a first error rate in the subsequent measurement process.
Disclosure of Invention
In view of the above, an object of the present invention is to provide a method for measuring an object weight, a weighing apparatus, and a readable storage medium, wherein a weighing error rate of the weighing apparatus and a conversion coefficient corresponding to the weighing error rate are determined according to an empty weight when an object to be weighed is not placed in the weighing apparatus, a conversion relation between a weighed weight of the object to be weighed and an actual weight during the weighing can be specifically determined, and the weighed weight is calibrated according to the conversion relation to obtain the object weight, which is helpful for improving the accuracy of measuring the object weight of the object to be weighed.
The embodiment of the application provides a method for measuring the weight of an object, which is applied to a weighing device and comprises the following steps:
determining a weighing error rate of the weighing device based on a no-load weight obtained by weighing by the weighing device when an object to be weighed is not placed and a preset standard no-load weight;
determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight;
determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range;
and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Further, before determining a weighing error rate of the weighing apparatus based on an empty weight weighed by the weighing apparatus when the object to be weighed is not placed and a preset standard empty weight, the measuring method further includes:
acquiring the measured no-load weight weighed by the weighing device when an object to be weighed is not placed;
and detecting whether the measured no-load weight is greater than a preset weight threshold, and if so, determining that the measured no-load weight is the no-load weight weighed by the weighing device when the object to be weighed is not placed in the weighing device.
Further, the weighing object weight of the object to be weighed is determined by:
acquiring a preset interference weight coefficient, and determining a sum value between the no-load weight and the interference weight coefficient;
detecting whether the weighed total weight is greater than a sum of the unloaded weight and the disturbance weight coefficient;
and if the weighing total weight is larger than the sum of the no-load weight and the interference weight coefficient, determining that the difference value between the weight of the weighing object and the no-load weight is the weight of the weighing object of the object to be weighed.
Further, the weighing error rate value range comprises one of an adjusted error rate value range and a non-adjusted error rate value range.
Further, when the target error rate value range includes the adjustment error rate value range, determining the object weight of the object to be weighed according to the following formula:
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, weight _ ratio is the correction coefficient, weight _ mappi is the no-load weight, and X is the conversion parameter.
Further, when the target error rate value range includes a non-adjustment error rate value range, determining the object weight of the object to be weighed by the following formula:
weight＝weight_food×weight_ratio；
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, and weight _ ratio is the correction coefficient.
An embodiment of the present application further provides a weighing apparatus, the weighing apparatus includes:
the weighing error rate determining module is used for determining the weighing error rate of the weighing device based on the no-load weight obtained by weighing by the weighing device when the object to be weighed is not placed and the preset standard no-load weight;
the weighing object weight determining module is used for determining the weighing object weight of the object to be weighed based on the weighing total weight weighed by the weighing device when the object to be weighed is placed in and the no-load weight;
the conversion parameter determination module is used for determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range;
and the object weight determining module is used for determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Further, the weighing apparatus further comprises an empty weight determination module, wherein the empty weight determination module is configured to:
acquiring the measured no-load weight weighed by the weighing device when an object to be weighed is not placed;
and detecting whether the measured no-load weight is greater than a preset weight threshold, and if so, determining that the measured no-load weight is the no-load weight weighed by the weighing device when the object to be weighed is not placed in the weighing device.
Further, the weighing object weight determining module is configured to determine the weighing object weight of the object to be weighed according to the total weighing weight weighed by the weighing device when the object to be weighed is placed in the weighing device and the empty load weight, and according to the following steps:
acquiring a preset interference weight coefficient, and determining a sum value between the no-load weight and the interference weight coefficient;
detecting whether the measured total weight is greater than a sum of the empty weight and the disturbance weight coefficient;
and if the total measured weight is greater than the sum of the no-load weight and the interference weight coefficient, determining the difference between the weight of the measured object and the no-load weight as the weight of the measured object of the object to be weighed.
Further, when the target error rate value range includes an adjusted error rate value range, the object weight determining module is configured to determine the object weight of the object to be weighed based on the empty weight, the weighed object weight, the conversion parameter, and a preset correction coefficient, and is configured to determine the object weight of the object to be weighed according to the following formula:
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, weight _ ratio is the correction coefficient, weight _ mappi is the no-load weight, and X is the conversion parameter.
Further, when the target error rate value range includes a non-adjustment error rate value range, the object weight determining module is configured to determine the object weight of the object to be weighed according to the following formula when determining the object weight of the object to be weighed based on the empty weight, the weighed object weight, the conversion parameter, and a preset correction coefficient:
weight＝weight_food×weight_ratio；
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, and weight _ ratio is the correction coefficient.
An embodiment of the present application further provides an electronic device, including: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating via the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the method of measuring the weight of an object as described above.
Embodiments of the present application also provide a computer-readable storage medium, on which a computer program is stored, where the computer program is executed by a processor to perform the steps of the method for measuring the weight of an object as described above.
According to the method for measuring the weight of the object, the weighing device and the readable storage medium, the weighing error rate of the weighing device is determined based on the no-load weight obtained by weighing by the weighing device when the object to be weighed is not placed and the preset standard no-load weight; determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight; determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range; and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Thus, according to the no-load weight when the object to be weighed is not placed in the weighing device and the preset standard no-load weight, the weighing error rate of the weighing device is determined, meanwhile, the weighing total weight weighed by the weighing device when the object to be weighed is placed in the weighing device is obtained, so that the weighing object weight of the object to be weighed is obtained, and then the conversion parameter between the weighing object weight of the object to be weighed corresponding to the target error rate value range to which the weighing error rate belongs and the actual object weight of the object to be weighed is determined. The conversion relation between the weighing weight and the actual weight of the object to be weighed can be determined in a targeted manner during the weighing, the weighing weight is calibrated according to the conversion relation, the object weight is obtained, and the accuracy of measuring the object weight of the object to be weighed is improved.
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.
Fig. 1 is a flowchart of a method for measuring a weight of an object according to an embodiment of the present disclosure;
FIG. 2 is a flow chart of a method for measuring the weight of an object according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a weighing apparatus according to an embodiment of the present disclosure;
fig. 4 is a second schematic structural view of a weighing apparatus according to an embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. Every other embodiment that can be obtained by a person skilled in the art without making creative efforts based on the embodiments of the present application falls within the protection scope of the present application.
First, an application scenario to which the present application is applicable will be described. The method can be applied to the technical field of measurement and correction, the weight of an object can be measured possibly in daily life or production operation, so that the proper application of the object can be ensured, in the measurement process, the measurement is required to be carried out through a weighing device such as an electronic scale, the core device of the electronic scale in the weighing process is a weighing sensor, each weighing sensor has certain weighing error due to the reasons of the production and manufacturing process and the like, in order to measure the weight of the object accurately as much as possible, an error rate needs to be determined, and the weight of the object is determined according to the error rate.
According to research, at present, the electronic scale is calibrated once according to the weighing of an object with known weight before the electronic scale is used for the first time, the error of the electronic scale is determined, and the actual weight of the object to be measured is calculated according to the first error rate in the subsequent measuring process.
Based on this, the embodiment of the application provides a method for measuring the weight of an object, which determines the weighing error rate of the weighing device and the conversion coefficient corresponding to the weighing error rate according to the empty load weight when the object to be weighed is not placed in the weighing device, and can pertinently determine the conversion relation between the weighing weight and the actual weight of the object to be weighed when the object to be weighed is weighed, so that the weighing weight is calibrated to obtain the weight of the object, and the method is helpful for improving the accuracy of measuring the weight of the object to be weighed.
Referring to fig. 1, fig. 1 is a flowchart illustrating a method for measuring a weight of an object according to an embodiment of the present disclosure. As shown in fig. 1, a method for measuring a weight of an object provided in an embodiment of the present application includes:
In this step, when no object is placed on the weighing device, the weighing device also measures a weight value when the weighing device is powered on, the weight value is the weight of the electronic scale, namely the no-load weight of the weighing device, determines the standard no-load weight of the standard weighing device when no object is placed in the weighing device, and compares the no-load weight with the standard no-load weight to determine the weighing error rate of the weighing device.
Here, the standard weighing device may be a calibrated weighing device, the measurement error of which is in a negligible range, i.e. the weight measured by the standard weighing device can be approximately considered as the actual weight of the object.
Here, the weighing device has a load cell embedded inside, which is actually a device that converts a mass signal into a measurable electrical signal output.
Here, the weight error rate of the load cell is obtained by subtracting the empty weight from the standard empty weight and multiplying the difference by 100%, for example, the empty weight measured by the load cell is 4.5kg, the standard empty weight of the standard cell is 4.49kg, it can be known that the empty weight is 0.01kg more than the standard empty weight, and then multiplying by 100%, the weight error rate of the load cell is 1%.
And 102, determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed in and the no-load weight.
In this step, when an object to be measured is placed in, the weighing device measures a total weighing weight, where the measured total weighing weight includes an object weight of the placed object to be weighed and an empty weight, the empty weight is subtracted from the total weighing weight, and a difference between the two weights is determined as a weighed object weight of the object to be weighed.
In order to explain the weighing principle of the electronic scale by taking the weighing device as a weighing sensor and taking the special chip HX711 of the electronic scale as an example, the determination of the total weighing weight is determined by a program in a chip included in the electronic scale, firstly, the range of the weighing sensor needs to be determined, the full-range output voltage is the excitation voltage and the sensitivity is 1mv/v, and for example, the power supply voltage is 5v multiplied by the sensitivity, 1.0mv/v and the full-range is 5 mv. Equivalent to 5mV voltage generated when 5Kg of gravity is generated; as HX711 has 128 times signal gain, 5mv of voltage can be amplified by 128 times, then 24bit analog-to-digital conversion (AD) conversion values are sampled and output, and 24bit data are read out by the single chip microcomputer through a specified time sequence. HX711 can generate VAVDD and AGND voltages,calculated VAVDD is 4.3 v. The maximum output voltage of the sensor of 5Kg under the power supply voltage of 4.3V is 4.3V 1 mv/V4.3 mv, and after 128 times of amplification, the maximum voltage is 4.3mv 128 550.4 mv. The maximum 24-bit digital value obtained by AD conversion is 550.4mv 2242147483, assuming that the gravity is Akg, the measured AD value is y, the sensor output of 5kg, the voltage sent to the AD module is Akg × 4.3mv/5 kg-0.86 AmV, after 128 times gain, 110.08AmV, and the signal is converted into a 24-bit digital signal 429496.7296 a. Approximately, a ═ y/4.3 g.
In the step, according to the influence degree of different error rates on the actual weight of the object, a plurality of weighing error rate value ranges are divided, a target error rate value range to which the weighing error rate calculated in the step 101 belongs is determined, and a conversion parameter between the weight of the object to be weighed and the actual weight of the object to be weighed is determined according to a parameter corresponding to the target error rate value range.
Here, the weighing error rate value range includes an adjusted error rate value range and a non-adjusted error rate value range, where the adjusted error rate value range means that when the weighing error rate is within the adjusted error rate value range, the error cannot be ignored, which affects the measurement of the electronic scale on the weight of the object, and therefore, the error must be corrected.
A large number of test experiments show that the error of the weighing sensor and the tare weight of the weighing sensor have a certain nonlinear relation, and the difference of tare weight expressions is different in the errors in different ranges. Therefore, the corresponding weighing data can be corrected according to the errors in different ranges.
Here, the determination of the target error rate value range to which the weighing error rate belongs is determined based on a start weighing error rate and an end weighing error rate for each weighing error rate value range, the weighing error rate being greater than the start weighing error rate and less than the end weighing error rate of the target error rate value range.
Here, the conversion between the measured object weight and the actual object weight of the object to be weighed is calculated by the same calculation formula, but different conversion parameters are corresponded to different weighing error rate value ranges, and a final calculation formula needs to be determined according to the weighing error rate value range.
And 104, determining the weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
In this step, the empty weight, the measured object weight, the conversion parameter, and a preset correction coefficient are substituted into the calculation formula of the conversion parameter determined in step 104, so as to determine the actual object weight of the object to be weighed.
Here, the correction coefficient is a correction coefficient determined based on the range of the load cell, and the correction coefficients for different ranges are different, for example, the correction coefficient for a load cell with a range of 1kg is 2.324, and the correction coefficient for a load cell with a range of 2kg is 2.862.
According to the method for measuring the weight of the object, provided by the embodiment of the application, the weighing error rate of the weighing device is determined based on the no-load weight obtained by weighing by the weighing device when the object to be weighed is not placed and the preset standard no-load weight; determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight; determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range; and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Thus, according to the no-load weight when the object to be weighed is not placed in the weighing device and the preset standard no-load weight, the weighing error rate of the weighing device is determined, meanwhile, the weighing total weight weighed by the weighing device when the object to be weighed is placed in the weighing device is obtained, so that the weighing object weight of the object to be weighed is obtained, and then the conversion parameter between the weighing object weight of the object to be weighed corresponding to the target error rate value range to which the weighing error rate belongs and the actual object weight of the object to be weighed is determined. The conversion relation between the weighing weight and the actual weight of the object to be weighed can be determined in a targeted manner during the weighing, the weighing weight is calibrated according to the conversion relation, the object weight is obtained, and the accuracy of measuring the object weight of the object to be weighed is improved.
Referring to fig. 2, fig. 2 is a flowchart of a method for measuring a weight of an object according to another embodiment of the present application. As shown in fig. 2, a method for measuring a weight of an object provided in an embodiment of the present application includes:
In the step, when the weighing device does not detect that an object to be measured exists, the weighing device is embedded in the weighing device and is powered on, and a weight of the weighing device can be automatically acquired and displayed.
In this step, it is detected whether the measured empty load weight obtained in step 201 is greater than a preset weight threshold, and if it is determined that the measured empty load weight is greater than the preset weight threshold, it is indicated that the measured empty load weight obtained at the present stage is valid, and the measured empty load weight is determined as the empty load weight weighed by the weighing apparatus when the object to be weighed is not placed in the empty load weight.
Here, the preset weight threshold may be set to 0, that is, when the object to be weighed is not placed, the weighing apparatus is considered to be an empty weight weighed by the weighing apparatus as long as the weighing apparatus measures the weight value.
And step 203, determining the weighing error rate of the weighing device based on the empty load weight obtained by weighing by the weighing device when the object to be weighed is not placed and the preset standard empty load weight.
And 204, determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed in and the no-load weight.
And step 206, determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
The descriptions of step S203 to step S206 may refer to the descriptions of step S101 to step S104, and the same technical effects can be achieved, which is not described in detail herein.
Further, the weighing object weight of the object to be weighed is determined by: acquiring a preset interference weight coefficient, and determining a sum value between the no-load weight and the interference weight coefficient; detecting whether the weighed total weight is greater than a sum of the unloaded weight and the disturbance weight coefficient; and if the weighing total weight is larger than the sum of the no-load weight and the interference weight coefficient, determining that the difference value between the weight of the weighing object and the no-load weight is the weight of the weighing object of the object to be weighed.
In the step, a preset interference weight coefficient is obtained, the sum value between the no-load weight and the interference weight coefficient is calculated, and whether the weighing total weight weighed by the weighing device is greater than the sum value between the no-load weight and the interference weight coefficient is detected; and if the total weighing weight is larger than the sum of the no-load weight and the interference weight coefficient, the object to be weighed is actually put into the weighing device, and the weight of the object to be weighed is obtained by subtracting the no-load weight from the total weighing weight.
Here, the disturbance weight coefficient is set to avoid the influence of the object remaining in the last weighing process or the weighing apparatus itself on the weighing process, and may be the minimum weight of the object to be weighed, and the disturbance weight coefficient is set to prevent the weighing disturbance of the object not to be measured on the weighing apparatus, and reduce the ineffective weighing in the weighing process.
Further, when the target error rate value range includes the adjustment error rate value range, determining the object weight of the object to be weighed according to the following formula:
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, weight _ ratio is the correction coefficient, weight _ mappi is the no-load weight, and X is the conversion parameter.
Here, the constant 32973 in the formula is a constant value which is obtained by a weighing experiment during weighing for a plurality of weighing apparatuses of the same type and which most enhances the adjustment effect.
Here, the conversion parameter X is determined based on a weighing error of the weighing device, and for example, when a weighing error rate is (1%, 1.5%), the conversion parameter X may be 180, and when the weighing error rate exceeds 0.5%, the conversion parameter X may be 280.
Further, when the target error rate value range includes a non-adjustment error rate value range, determining the object weight of the object to be weighed by the following formula:
weight＝weight_food×weight_ratio；
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, and weight _ ratio is the correction coefficient.
Here, when the range of the target error rate to which the weighing error rate belongs is a range in which error adjustment is not required, that is, an error within the range is acceptable, then the empty weight and the conversion coefficient of the weighing device are not required, and the weight of the weighing object can be obtained by multiplying the error by the correction coefficient of the weighing device.
Corresponding to the above example, when the weighing error rate is (-0.5%, 1%), no correction by the empty weight of the weighing device and the conversion factor is required.
According to the method for measuring the weight of the object, the no-load weight measured by the weighing device when the object to be weighed is not placed is obtained; detecting whether the measured no-load weight is greater than a preset weight threshold, and if the measured no-load weight is greater than the preset weight threshold, determining that the measured no-load weight is the no-load weight weighed by the weighing device when an object to be weighed is not placed in the weighing device; determining a weighing error rate of the weighing device based on a no-load weight obtained by weighing by the weighing device when an object to be weighed is not placed and a preset standard no-load weight; determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight; determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range; and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Thus, according to the no-load weight when the object to be weighed is not placed in the weighing device and the preset standard no-load weight, the weighing error rate of the weighing device is determined, meanwhile, the weighing total weight weighed by the weighing device when the object to be weighed is placed in the weighing device is obtained, so that the weighing object weight of the object to be weighed is obtained, and then the conversion parameter between the weighing object weight of the object to be weighed corresponding to the target error rate value range to which the weighing error rate belongs and the actual object weight of the object to be weighed is determined. The conversion relation between the weighing weight and the actual weight of the object to be weighed can be determined in a targeted manner during the weighing, the weighing weight is calibrated according to the conversion relation, the object weight is obtained, and the accuracy of measuring the object weight of the object to be weighed is improved.
Referring to fig. 3 and 4, fig. 3 is a first schematic structural diagram of a weighing apparatus according to an embodiment of the present disclosure, and fig. 4 is a second schematic structural diagram of the weighing apparatus according to the embodiment of the present disclosure. As shown in fig. 3, the weighing device 300 includes:
a weighing error rate determining module 310, configured to determine a weighing error rate of the weighing apparatus based on an empty weight weighed by the weighing apparatus when no object to be weighed is placed and a preset standard empty weight.
A weighing object weight determining module 320, configured to determine a weighing object weight of the object to be weighed based on the total weighing weight weighed by the weighing apparatus when the object to be weighed is placed in, and the empty weight.
The conversion parameter determining module 330 is configured to determine, according to a plurality of preset weighing error rate value ranges and the preset weighing error rate, a target error rate value range to which the weighing error rate belongs, and determine a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, where the target error rate value range corresponds to the weighing object weight.
And an object weight determining module 340, configured to determine the object weight of the object to be weighed based on the empty weight, the weighed object weight, the conversion parameter, and a preset correction coefficient.
Further, as shown in fig. 4, the weighing apparatus 300 further includes an empty weight determining module 350, wherein the empty weight determining module 350 is configured to:
acquiring the measured no-load weight weighed by the weighing device when an object to be weighed is not placed;
and detecting whether the measured no-load weight is greater than a preset weight threshold, and if so, determining that the measured no-load weight is the no-load weight weighed by the weighing device when the object to be weighed is not placed in the weighing device.
Further, the weighing object weight determining module 320 is configured to determine the weighing object weight of the object to be weighed by the weighing apparatus when determining the weighing object weight of the object to be weighed based on the total weighing weight weighed by the weighing apparatus when the object to be weighed is placed and the empty weight, by:
acquiring a preset interference weight coefficient, and determining a sum value between the no-load weight and the interference weight coefficient;
detecting whether the measured total weight is greater than a sum of the empty weight and the disturbance weight coefficient;
and if the total measured weight is greater than the sum of the no-load weight and the interference weight coefficient, determining the difference between the weight of the measured object and the no-load weight as the weight of the measured object of the object to be weighed.
Further, when the target error rate value range includes the adjustment error rate value range, the object weight determining module 340, when configured to determine the object weight of the object to be weighed based on the empty weight, the weighed object weight, the conversion parameter and the preset correction coefficient, is configured to determine the object weight of the object to be weighed by the following formula:
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, weight _ ratio is the correction coefficient, weight _ mappi is the no-load weight, and X is the conversion parameter.
Further, when the target error rate value range includes a non-adjusted error rate value range, the object weight determining module 340, when configured to determine the object weight of the object to be weighed based on the empty weight, the weighed object weight, the conversion parameter and a preset correction coefficient, is configured to determine the object weight of the object to be weighed by the following formula:
weight＝weight_food×weight_ratio；
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, and weight _ ratio is the correction coefficient.
The weighing device provided by the embodiment of the application determines the weighing error rate of the weighing device based on the no-load weight obtained by weighing by the weighing device when an object to be weighed is not placed and the preset standard no-load weight; determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight; determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range; and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
Thus, according to the no-load weight when the object to be weighed is not placed in the weighing device and the preset standard no-load weight, the weighing error rate of the weighing device is determined, meanwhile, the weighing total weight weighed by the weighing device when the object to be weighed is placed in the weighing device is obtained, so that the weighing object weight of the object to be weighed is obtained, and then the conversion parameter between the weighing object weight of the object to be weighed corresponding to the target error rate value range to which the weighing error rate belongs and the actual object weight of the object to be weighed is determined. The conversion relation between the weighing weight and the actual weight of the object to be weighed can be determined in a targeted manner during the weighing, the weighing weight is calibrated according to the conversion relation, the object weight is obtained, and the accuracy of measuring the object weight of the object to be weighed is improved.
Referring to fig. 5, fig. 5 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure. As shown in fig. 5, the electronic device 500 includes a processor 510, a memory 520, and a bus 530.
The memory 520 stores machine-readable instructions executable by the processor 510, when the electronic device 500 runs, the processor 510 communicates with the memory 520 through the bus 530, and when the machine-readable instructions are executed by the processor 510, the steps of the method for measuring the weight of the object in the embodiment of the method shown in fig. 1 and fig. 2 may be performed.
An embodiment of the present application further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method for measuring the weight of the object in the method embodiments shown in fig. 1 and fig. 2 may be executed.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. The above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one logical division, and there may be other divisions when actually implemented, and for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some communication interfaces, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer-readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present application, and are used for illustrating the technical solutions of the present application, but not limiting the same, and the scope of the present application is not limited thereto, and although the present application is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope disclosed in the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the exemplary embodiments of the present application, and are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A method for measuring the weight of an object, which is applied to a weighing device, comprises the following steps:
determining a weighing error rate of the weighing device based on a no-load weight obtained by weighing by the weighing device when an object to be weighed is not placed and a preset standard no-load weight;
determining the weight of the object to be weighed based on the total weighing weight weighed by the weighing device when the object to be weighed is placed and the no-load weight;
determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range;
and determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
2. The measuring method according to claim 1, wherein before determining a weighing error rate of the weighing apparatus based on an empty weight weighed by the weighing apparatus when no object to be weighed is placed and a preset standard empty weight, the measuring method further comprises:
acquiring the measured no-load weight weighed by the weighing device when an object to be weighed is not placed;
and detecting whether the measured no-load weight is greater than a preset weight threshold, and if so, determining that the measured no-load weight is the no-load weight weighed by the weighing device when the object to be weighed is not placed in the weighing device.
3. A measuring method according to claim 1, characterized in that the weighing object weight of the object to be weighed is determined by:
acquiring a preset interference weight coefficient, and determining a sum value between the no-load weight and the interference weight coefficient;
detecting whether the weighed total weight is greater than a sum of the unloaded weight and the disturbance weight coefficient;
and if the weighing total weight is larger than the sum of the no-load weight and the interference weight coefficient, determining that the difference value between the weight of the weighing object and the no-load weight is the weight of the weighing object of the object to be weighed.
4. The measurement method of claim 1, wherein the weighing error rate value range comprises one of an adjusted error rate value range and a non-adjusted error rate value range.
5. The measuring method according to claim 4, wherein when the target error rate value range includes an adjusted error rate value range, determining the object weight of the object to be weighed by the following formula:
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, weight _ ratio is the correction coefficient, weight _ mappi is the no-load weight, and X is the conversion parameter.
6. The measurement method according to claim 4, wherein when the target error rate value range includes a non-adjusted error rate value range, determining the object weight of the object to be weighed by the following formula:
weight＝weight_food×weight_ratio；
wherein, weight is the actual object weight of the object to be weighed, weight _ food is the measured object weight, and weight _ ratio is the correction coefficient.
7. A weighing apparatus, characterized in that the weighing apparatus comprises:
the weighing error rate determining module is used for determining the weighing error rate of the weighing device based on the no-load weight obtained by weighing by the weighing device when the object to be weighed is not placed and the preset standard no-load weight;
the weighing object weight determining module is used for determining the weighing object weight of the object to be weighed based on the weighing total weight weighed by the weighing device when the object to be weighed is placed in and the no-load weight;
the conversion parameter determination module is used for determining a target error rate value range to which the weighing error rate belongs according to a plurality of preset weighing error rate value ranges and the weighing error rate, and determining a conversion parameter between the weighing object weight of the object to be weighed and the actual object weight of the object to be weighed, wherein the conversion parameter corresponds to the target error rate value range;
and the object weight determining module is used for determining the object weight of the object to be weighed based on the no-load weight, the weight of the weighed object, the conversion parameter and a preset correction coefficient.
8. The weighing apparatus of claim 7, further comprising an empty weight determination module to:
acquiring the measured no-load weight weighed by the weighing device when an object to be weighed is not placed;
and detecting whether the measured no-load weight is greater than a preset weight threshold, and if so, determining that the measured no-load weight is the no-load weight weighed by the weighing device when the object to be weighed is not placed in the weighing device.
9. An electronic device, comprising: a processor, a memory and a bus, the memory storing machine-readable instructions executable by the processor, the processor and the memory communicating over the bus when the electronic device is operating, the machine-readable instructions when executed by the processor performing the steps of the method of measuring the weight of an object according to any one of claims 1 to 6.
10. A computer-readable storage medium, characterized in that a computer program is stored on the computer-readable storage medium, which computer program, when being executed by a processor, performs the steps of the method for measuring the weight of an object according to any one of claims 1 to 6.
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| CN114383357A (en) * | 2020-10-21 | 2022-04-22 | 青岛海尔电冰箱有限公司 | Refrigerator testing method and refrigerator |
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