CN113407571B - Counting method based on weighing principle - Google Patents
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- CN113407571B CN113407571B CN202110735662.3A CN202110735662A CN113407571B CN 113407571 B CN113407571 B CN 113407571B CN 202110735662 A CN202110735662 A CN 202110735662A CN 113407571 B CN113407571 B CN 113407571B
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- G06—COMPUTING; CALCULATING OR COUNTING
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/30—Computing systems specially adapted for manufacturing
Abstract
The invention discloses a counting method based on a weighing principle, belongs to the technical field of data processing, and provides the following scheme: a counting method based on weighing principle, comprising: acquiring the current weight of an article to be detected; constructing an error corresponding table according to the sampling weight and the corresponding quantity sequence of the object to be detected, and constructing a weight difference table according to the current weight and the standard weight of the object to be detected; judging whether the current weight of the object to be detected has intersection in the error corresponding table; if no intersection exists, outputting the quantity corresponding to the current weight according to the weight difference table; if an intersection exists, the number of current weight matches is estimated based on the similarity of the weight-number sequences. According to the technical scheme, the problems of weighing errors and inaccurate counting of the measuring equipment are solved, and the measuring accuracy of the measuring equipment is improved.
Description
Technical Field
The invention relates to the technical field of data processing, in particular to a counting method based on a weighing principle.
Background
At present, in the production process of food, medicines, daily chemicals and the like, the food, the medicines, the daily chemicals and the like are generally required to be weighed and counted; at present, weighing and counting methods generally use manual work or measuring equipment to directly weigh and count, each article with the same specification has the same weight, and when an article to be measured with a certain weight is placed on the measuring equipment, the number of the article to be measured can be calculated by the measuring equipment, so as to obtain the weight and the number of the article to be measured. In the use process of the measuring equipment, due to the change of the environmental temperature or the long-term pressure bearing, the zero point and the linearity of a pressure sensor of the measuring equipment can be changed, so that the weighing of the measuring equipment has errors, and the counting is inaccurate.
In addition, because the objects to be measured with the same specification have certain weight deviation due to production process problems in the production process, when the accumulated weight error of a plurality of objects to be measured reaches the weight of one object to be measured or an integral multiple of the weight of one object to be measured, the total number of the objects to be measured is difficult to calculate.
Disclosure of Invention
The invention mainly aims to provide a counting method based on a weighing principle, which aims to solve the problems of weighing error and inaccurate counting of measuring equipment and improve the measuring accuracy of the measuring equipment.
The basic scheme provided by the invention is as follows:
a counting method based on weighing principle, comprising:
acquiring the current weight of an article to be detected;
constructing an error corresponding table according to the sampling weight and the corresponding quantity sequence of the object to be detected, and constructing a weight difference table according to the current weight and the standard weight of the object to be detected;
judging whether the current weight of the object to be detected has intersection in the error corresponding table or not;
if no intersection exists, outputting the quantity corresponding to the current weight according to the weight difference table;
if an intersection exists, the number of current weight matches is estimated based on the similarity of the weight-number sequences.
The principle and the effect of the basic scheme of the invention are as follows:
when the measuring equipment is used for weighing the objects to be measured, because certain weight deviation exists in the production process problem of the objects to be measured with the same specification in the production process, when the accumulated weight error of a plurality of the objects to be measured reaches the weight of one object to be measured or the integral multiple of the weight of one object to be measured, the total number of the objects to be measured is difficult to calculate; meanwhile, in the use process of a pressure sensor in the measuring equipment, the zero point and linearity of the pressure sensor are changed due to the change of environmental temperature or the long-term pressure bearing, so that the weighing is inaccurate, and the calculated quantity of the objects to be measured is inaccurate.
According to the scheme, an error corresponding table is established according to the sampling weight and the corresponding quantity sequence of the object to be detected, a weight difference table is established according to the current weight and the standard weight of the object to be detected, and then whether intersection exists in the error corresponding table or not is judged; if the current weight of the object to be detected does not have intersection in the error corresponding table, directly outputting the quantity corresponding to the current weight according to the weight difference table; if the current weight of the object to be measured has intersection in the error corresponding table, establishing a weight-quantity sequence, and estimating the number of current weight matches according to the similarity of the weight-quantity sequence, namely estimating the number of current weight matches of the object to be measured according to the similarity interval of the weight of the object to be measured placed on the measuring equipment in the weight-quantity sequence.
Through the construction of the error correspondence table and the weight difference table, and whether the current weight of the object to be detected is judged in the error correspondence table or not, the number of weight matches of the object to be detected is determined, and when the pressure sensor changes linearly or the weights of the objects in different batches of the same specification change, all parameters are automatically adjusted through the scheme, so that the correct change number and the total number of the object to be detected are finally calculated. Meanwhile, through the adjustment of each parameter and estimation matching of the scheme, the problem of errors caused by linear change and zero drift of the pressure sensor can be effectively solved, the problems of errors and inaccurate counting of weighing of the measuring equipment are solved, and the measuring accuracy of the measuring equipment is improved.
Further, the error correspondence table is:
，
wherein N is a sequence of numbers,
for the sampling weight of the item to be examined>
The weight error value of the object to be measured;
the weight difference table is:
wherein, the first and the second end of the pipe are connected with each other,
is the current weight of the item to be measured.
Through the construction of the error correspondence table and the weight difference table, whether the current weight of the object to be detected has intersection in the error correspondence table or not is judged conveniently, and the quantity corresponding to the current weight of the object to be detected can be obtained quickly.
Further, the step of judging whether the current weight of the article to be detected has an intersection in the error correspondence table includes:
judging formula according to intersection
And judging whether the current weight of the object to be detected has intersection in the error corresponding table.
Whether the current weight of the object to be measured has intersection in the error correspondence table is judged through the intersection, so that the problems that the current weight of the object to be measured changes and errors are accumulated continuously are solved, and the measuring accuracy of the measuring equipment is improved.
Further, if there is no intersection, the step of outputting the number corresponding to the current weight according to the weight difference table includes:
if no intersection exists, inquiring the minimum weight value according to the weight difference table;
and the quantity corresponding to the weight minimum value in the weight difference table is the quantity corresponding to the current weight.
And when the current weight of the object to be detected does not have intersection in the error corresponding table, directly inquiring the minimum weight value in the weight difference table so as to directly output the quantity corresponding to the current weight of the object to be detected.
Further, if there is an intersection, the step of estimating the current weight-matched number based on the similarity of the weight-number sequences comprises:
if intersection exists, constructing a weight sequence and a number sequence according to the range of the intersection;
calculating the similarity of the weight sequence and the number sequence;
and estimating the number corresponding to the minimum similarity value, and determining the number matched by the current weight.
And when the current weight of the object to be detected has intersection in the error corresponding table, estimating the quantity corresponding to the minimum similarity value through the calculation of the similarity of the weight sequence and the quantity sequence, thereby realizing the accurate estimation of the quantity of the current weight matching of the object to be detected.
Further, the step of calculating the similarity of the weight sequence and the number sequence comprises:
according to the similarity calculation formula
To the weight sequenceThe similarity of the column and the number sequence is calculated, wherein>
Is a weight sequence, is based on>
Is a number sequence, is->
Is a sequence of weight
Number sequence>
In (b) in the covariance based on the variance of the measured signal in the mean value>
Is a weight sequence>
In (b) based on the variance of (c), in>
As a number sequence>
The variance of (c).
And calculating the similarity of the weight sequence and the quantity sequence by using a similarity calculation formula so as to better estimate the current weight matching quantity of the object to be measured.
Further, the counting method based on the weighing principle further comprises the following steps:
updating the system error according to the number of the current weight matching;
updating the weight sequence and the number sequence after updating the system error;
returning to continuously obtain the current weight of the object to be measured.
The quantity corresponding to the weight of the object to be measured is estimated and matched to update the system error, the weight sequence and the quantity sequence, so that the measuring accuracy of the measuring equipment is improved.
Further, the counting method based on the weighing principle further comprises the following steps:
automatically recording the currently placed object to be tested or the removed object to be tested, and recording the weight error value of the object to be tested;
and substituting the weight error value of the article to be detected into the quantity of the next article to be detected for calculation.
The weight errors of the to-be-measured article added and removed by the currently placed to-be-measured article and the to-be-measured article are automatically recorded, and the error value is substituted into the quantity calculation of the next to-be-measured article, and iteration is continuously performed, so that the linear change in the working process of the measuring device and the system errors caused by the weight errors of different batches of the same specification can be avoided.
Further, the obtaining of the current weight and the current number of the object to be measured specifically includes:
periodically acquiring the current weight detected by the pressure sensor;
and when the pressure variation detected by the pressure sensor is larger than a preset threshold value, judging that the object to be measured on the measuring equipment is placed or removed.
The variable quantity that gathers through pressure sensor just judges to be measured article and places or remove after being greater than predetermineeing the threshold value, can effectually avoid the system error that pressure sensor creep, temperature drift brought like this.
Further, the step of obtaining the current weight and the current number of the to-be-measured object comprises the following steps:
continuously acquiring the sampling weight of the article to be detected for N times to calculate the weight average value of the article to be detected;
and calculating a weight error value according to the maximum sampling weight value and the minimum sampling weight value.
The weight average value and the weight error value of the article to be measured are calculated by continuously obtaining the sampling weight of the article to be measured for many times, and the measuring equipment is initialized, so that the measuring accuracy of the measuring equipment is improved.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a terminal device according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of an embodiment of a counting method based on the weighing principle according to the present invention.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The following is further detailed by way of specific embodiments:
reference numerals in the drawings of the specification include: a processor 1001, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005.
Fig. 1 is a schematic diagram of an internal structure of a terminal device according to an embodiment of the present invention.
It should be noted that fig. 1 is a schematic structural diagram of a hardware operating environment of the terminal device. The terminal equipment of the embodiment of the invention can be terminal equipment such as a PC, a portable computer and the like.
As shown in fig. 1, the terminal device may include: a processor 1001, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. The communication bus 1002 is used for realizing connection and communication among the processor 1001, the user interface 1003, the network interface 1004, and the memory 1005. The user interface 1003 may include a Display screen (Display), an input unit such as a Keyboard (Keyboard), a tablet, a stylus pen, etc., and the optional user interface 1003 may also include a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface (e.g., RJ45 interface), a wireless interface (e.g., WIFI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory such as a disk memory. The memory 1005 may alternatively be a storage device separate from the processor 1001.
Those skilled in the art will appreciate that the terminal device configuration of fig. 1 is not limiting of terminal devices and may include more or fewer components than shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer storage medium, may include therein an operating system, a network communication module, a user interface module, and a distributed task processing program. Among them, the operating system is a program that manages and controls the hardware and software resources of the sample terminal device, a handler that supports distributed tasks, and the execution of other software or programs.
In the terminal apparatus shown in fig. 1, the user interface 1003 is mainly used for data communication with each terminal; the network interface 1004 is mainly used for connecting a background server and performing data communication with the background server; and the processor 1001 may be configured to invoke a counting procedure based on the weighing principle in the memory 1005 and perform the following operations as shown in fig. 2:
s10, acquiring the current weight of an article to be detected;
in this embodiment, the measurement device is initialized, the sampling weight of the article to be measured is continuously obtained K times, so as to calculate the average weight value of the article to be measured, and the weight error value is calculated according to the maximum sampling weight value and the minimum sampling weight value. Specifically, the article to be measured is placed on the measuring equipment, the sampling weight of the article to be measured is continuously obtained for K times, if the sampling weight is less than K times, the sampling weight is continuously obtained, and if the sampling weight is more than K times, the weight average value and the weight error value of the article to be measured are calculated. It is understood that K may be, but is not limited to, 1, 2, 3, 4, 5, etc.
It should be noted that, when K is 3 times, the weights obtained 3 times are W1, W2, and W3, and the average weight of the object to be measured at this time is
The greatest weight value is present among the 3 weights taken>
And a minimum weight value +>
At this time, the weight error value>
。
S20, constructing an error corresponding table according to the sampling weight and the corresponding quantity sequence of the object to be detected, and constructing a weight difference table according to the current weight and the standard weight of the object to be detected;
in this embodiment, according to the current weight, the corresponding number sequence, and the standard weight of the object to be measured, the error correspondence table is constructed as follows:
，/>
；
wherein, N is a number sequence,
for the sampling weight of the item to be examined>
The weight error value of the object to be measured;
the weight difference table constructed was:
(ii) a Wherein it is present>
Is the current weight of the item to be measured. Through the construction of the error correspondence table and the weight difference table, whether the current weight of the object to be detected has intersection in the error correspondence table or not is judged conveniently, and the quantity corresponding to the current weight of the object to be detected can be obtained quickly.
S30, judging whether the current weight of the object to be detected has intersection in the error corresponding table;
particularly, the formula can be judged according to the intersection
And judging whether the current weight of the object to be detected has intersection in the error corresponding table. Whether the current weight of the object to be measured has intersection in the error correspondence table is judged through intersection judgment formula, the problems that the current weight of the object to be measured changes and errors are accumulated continuously are solved, and the measurement of the measuring equipment is improvedAnd (4) accuracy.
Step S40, if no intersection exists, outputting the quantity corresponding to the current weight according to the weight difference table;
and S50, if the intersection exists, estimating the current weight matching number according to the similarity of the weight-number sequence.
In this embodiment, if the current weight of the object to be measured does not have an intersection in the error correspondence table, the number corresponding to the current weight is directly output according to the weight difference table; if the current weight of the object to be measured has intersection in the error correspondence table, establishing a weight-quantity sequence, estimating the quantity of the current weight matching according to the similarity of the weight-quantity sequence, specifically, establishing a weight sequence and a quantity sequence according to the intersection range to calculate the similarity of the weight sequence and the quantity sequence, and estimating the quantity corresponding to the minimum similarity value to match the quantity corresponding to the current weight.
It should be noted that, when the weight of the object to be measured placed on the measuring device is in two or more intervals in the weight-number sequence, the similarity of the weight-number sequence is used to estimate the number of current weight matches of the object to be measured.
In this embodiment, the formula is specifically calculated according to the similarity
Calculating the similarity of said weight sequence and said number sequence, wherein->
Is a weight sequence, is based on>
In the form of a sequence of numbers,
in a weight sequence>
Number sequence>
Is greater than or equal to>
In a weight sequence>
The variance of (a) is calculated,
is a number sequence->
The variance of (c).
Through the construction of the error correspondence table and the weight difference table, and whether the current weight of the object to be detected is judged in the error correspondence table or not, the number of weight matches of the object to be detected is determined, and when the linear change of the pressure sensor or the weight change of objects of the same specification and different batches, all parameters are automatically adjusted through the scheme, so that the correct change number and the total number of the object to be detected are finally calculated. Meanwhile, by adjusting each parameter and estimating and matching, the problems of linear change of the pressure sensor and errors brought by zero drift can be effectively solved, and the measuring accuracy of the measuring equipment is improved.
In one embodiment, according to the error correspondence table:
TABLE 1
If the current weight
The weight difference table is shown in table 2 below:
TABLE 2
In the above examples, the weight sequence
And number sequence>
Can be viewed as two first-in-first-out queues, the final number and corresponding weight calculated each time are placed in the two tables, and if the weight is next obtained, the weight is placed in the weight queue->
Then, assuming the number n1, n2, n3, and, using the similarity of the curves to the weight sequence
And number sequence>
Are compared with a weight sequence>
Most similar number sequence>
Is considered to be the more accurate current quantity.
In one embodiment, the counting method based on the weighing principle further comprises: updating the system error according to the number of the current weight matching; updating the weight sequence and the number sequence after updating the system error; and returning to continuously obtain the current weight of the object to be measured. In particular toIs obtained by updating formula of system error
The system error of the measuring equipment is updated, and the system error, the weight sequence and the number sequence are updated by estimating and matching the number corresponding to the weight of the object to be measured, so that the measuring accuracy of the measuring equipment is improved. Further, updating the system error mainly means that articles of the same batch of specifications are placed, each article has a weight deviation, for example, the weight error is updated each time when the articles to be measured placed for the first time are all 10g, the articles to be measured placed for the second time are all 11g, and the articles to be measured placed for the third time are all 10.5g, and then the latest error is substituted into the calculation of the next error correspondence table, so that the weight value of the articles to be measured in the obtained error correspondence table is closer to the true value. This embodiment has promoted the accuracy to the article measurement that awaits measuring.
The foregoing are embodiments of the present invention and are not intended to limit the scope of the invention to the particular forms or details of the embodiments shown, and are not limited to the details shown, since the modifications and variations will occur to those skilled in the art upon the basis of the present disclosure and the appended claims. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several changes and modifications can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.
Claims (7)
1. A counting method based on a weighing principle is characterized by comprising the following steps:
acquiring the current weight of an article to be detected;
constructing an error corresponding table according to the sampling weight and the corresponding quantity sequence of the object to be detected, and constructing a weight difference table according to the current weight and the standard weight of the object to be detected;
judging whether the current weight of the object to be detected has intersection in the error corresponding table or not;
if no intersection exists, outputting the quantity corresponding to the current weight according to the weight difference table;
if the intersection exists, estimating the number of the current weight matching according to the similarity of the weight-number sequence;
if an intersection exists, the step of estimating the current weight-matched number based on the similarity of the weight-number sequences comprises:
if intersection exists, constructing a weight sequence and a quantity sequence according to the range of the intersection;
calculating the similarity of the weight sequence and the number sequence;
estimating the number corresponding to the minimum similarity value, and determining the number matched with the current weight;
the error correspondence table is:
，
wherein N is a sequence of numbers,
for the sampling weight of the item to be examined>
The weight error value of the object to be measured;
the weight difference table is:
wherein the content of the first and second substances,
the current weight of the object to be measured;
the step of judging whether the current weight of the object to be detected has intersection in the error corresponding table comprises the following steps:
judging formula according to intersection
And judging whether the current weight of the object to be detected has intersection in the error corresponding table.
2. The counting method based on weighing principle of claim 1, wherein if there is no intersection, the step of outputting the number corresponding to the current weight according to the weight difference table comprises:
if no intersection exists, inquiring the minimum weight value according to the weight difference table;
and the quantity corresponding to the weight minimum value in the weight difference table is the quantity corresponding to the current weight.
3. The weighing principle-based counting method of claim 1, wherein the step of calculating the similarity of the weight sequence and the number sequence comprises:
according to the similarity calculation formula
Calculating the similarity of the weight sequence and the number sequence, wherein>
In a sequence of weights->
Is a number sequence, is->
Is a sequence of weight
Number sequence>
In (b) in the covariance based on the variance of the measured signal in the mean value>
Is a weight sequence>
Is greater than or equal to>
Is a number sequence->
The variance of (c).
4. The counting method based on the weighing principle according to claim 1 or 2, further comprising:
updating the system error according to the number of the current weight matching;
updating the weight sequence and the number sequence after updating the system error;
and returning to continuously obtain the current weight of the object to be measured.
5. The counting method based on weighing principle of claim 4, further comprising:
automatically recording the currently placed object to be tested or the removed object to be tested, and recording the weight error value of the object to be tested;
and substituting the weight error value of the article to be measured into the quantity of the article to be measured next time for calculation.
6. The counting method based on the weighing principle as claimed in claim 5, wherein the obtaining of the current weight of the object to be measured is specifically:
periodically acquiring the current weight detected by the pressure sensor;
and when the pressure variation detected by the pressure sensor is larger than a preset threshold value, judging that the object to be measured on the measuring equipment is placed or removed.
7. The counting method based on weighing principle according to claim 1, wherein the step of obtaining the current weight and the current number of the items to be measured is preceded by:
continuously acquiring the sampling weight of the article to be detected for K times to calculate the weight average value of the article to be detected;
and calculating a weight error value according to the maximum sampling weight value and the minimum sampling weight value.
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