CN111307255A - Weighing method and system of belt scale - Google Patents
Weighing method and system of belt scale Download PDFInfo
- Publication number
- CN111307255A CN111307255A CN202010164431.7A CN202010164431A CN111307255A CN 111307255 A CN111307255 A CN 111307255A CN 202010164431 A CN202010164431 A CN 202010164431A CN 111307255 A CN111307255 A CN 111307255A
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- weighing
- weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
- G01G11/006—Special taring or checking devices therefor
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
- G01G23/012—Testing or calibrating of weighing apparatus with load cells comprising in-build calibration weights
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- General Physics & Mathematics (AREA)
- Control Of Conveyors (AREA)
Abstract
The invention relates to a weighing method and a weighing system of a belt scale. The method comprises the steps of acquiring the length of a conveyor belt of the belt scale; determining a plurality of weighing zones according to the length of the conveyor belt; a pressure sensor is arranged in each weighing area; acquiring the known weight of the known cargo; acquiring the weighing weight of the known goods on each weighing area; determining a weight error value for each of the weighing zones based on each of the weighed weights and the known weight; compensating the corresponding weighing area according to the weight error value, and determining the compensated weighing area; and weighing the goods to be measured according to each compensated weighing area, and determining the weight of the goods to be measured. The invention provides a weighing method and a weighing system of a belt scale, which solve the problem of low weighing precision of the belt scale in the prior art.
Description
Technical Field
The invention relates to the field of belt scale weighing, in particular to a weighing method and a weighing system of a belt scale.
Background
A belt scale refers to an automatic weighing apparatus that continuously weighs bulk materials on a conveyor belt without subdividing the mass or interrupting the movement of the conveyor belt. The electronic belt scale consists of scale frame, speed measuring sensor, high precision weight measuring sensor, belt scale control and display instrument, and can measure solid material continuously and dynamically.
Belt weighers are commonly used for large-scale industrial metering, such as raw material metering of mines, coal, cement, steel and the like, and statistical 'rough metering' of materials in a production process. However, as the requirements for production statistics become more and more accurate, the weighing accuracy requirements for belt weighers also become higher and higher. In the traditional belt weigher weighing method, when materials pass through, the weighing sensors are acted on by the metering carrier rollers through levers when the weights of the materials on the belt conveyor are detected, and a voltage signal proportional to the belt load is generated. The speed sensor is directly connected to the large diameter tacho drum and provides a series of pulses, each pulse representing a belt movement unit, the frequency of the pulses being proportional to the belt speed. The weighing instrument receives signals from the weighing sensor and the speed sensor, and an instantaneous flow value and an accumulated weight value are obtained through integral operation and are respectively displayed. The method only continuously weighs the goods, and does not consider errors of the goods in the transmission process, so that the weighing precision of the belt weigher cannot meet the requirements of people.
Disclosure of Invention
The invention aims to provide a weighing method and a weighing system of a belt scale, which solve the problem of low weighing precision of the belt scale in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
a method of weighing a belt scale, comprising:
acquiring the length of a conveyor belt of a belt scale;
determining a plurality of weighing zones according to the length of the conveyor belt; a pressure sensor is arranged in each weighing area;
acquiring the known weight of the known cargo;
acquiring the weighing weight of the known goods on each weighing area;
determining a weight error value for each of the weighing zones based on each of the weighed weights and the known weight;
compensating the corresponding weighing area according to the weight error value, and determining the compensated weighing area;
and weighing the goods to be measured according to each compensated weighing area, and determining the weight of the goods to be measured.
Optionally, the acquiring the weighing weight of the known cargo on each weighing area specifically includes:
acquiring the conveying speed and the conveying time of the conveying belt;
converting the pressure signal acquired by the pressure sensor of each weighing area into a weight value;
and determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
Optionally, the compensating the corresponding weighing area according to the weight error value, and determining the compensated weighing area specifically includes:
determining weights with corresponding weights according to the weight error values corresponding to the weighing areas;
and compensating the corresponding weighing area by using the weight, and determining the compensated weighing area.
Optionally, the weighing of the goods to be measured in each compensated weighing area is performed to determine the weight of the goods to be measured, which specifically includes:
weighing the goods to be measured according to each compensated weighing area, and determining a plurality of measurement values;
determining an average of a plurality of measurements; the average value is the weight of the goods to be measured.
A weighing system of a belt scale, comprising:
the length acquisition module is used for acquiring the length of a conveyor belt of the belt scale;
the weighing area determining module is used for determining a plurality of weighing areas according to the length of the conveyor belt; a pressure sensor is arranged in each weighing area;
the known weight obtaining module is used for obtaining the known weight of the known goods;
the weighing weight acquisition module is used for acquiring the weighing weight of the known goods on each weighing area;
a weight error value determination module for determining a weight error value for each of the weighing zones based on each of the weighing weights and the known weight;
the compensated weighing area determining module is used for compensating the corresponding weighing area according to the weight error value and determining the compensated weighing area;
and the weight determining module of the goods to be detected is used for weighing the goods to be detected according to each compensated weighing area and determining the weight of the goods to be detected.
Optionally, the weighing weight obtaining module specifically includes:
a transmission data acquisition unit for acquiring a transmission speed and a transmission time of the conveyor belt;
the data conversion unit is used for converting the pressure signals acquired by the pressure sensors in each weighing area into weight values;
and the weighing weight determining unit is used for determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
Optionally, the compensated weighing area determining module specifically includes:
the weight determining unit is used for determining weights with corresponding weights according to the weight error values corresponding to the weighing areas;
and the compensated weighing area determining unit is used for compensating the corresponding weighing area by using the weights and determining the compensated weighing area.
Optionally, the weight determining module for the goods to be tested specifically includes:
the measured value determining unit is used for weighing the goods to be measured according to each compensated weighing area and determining a plurality of measured values;
a weight determination unit for the cargo to be measured for determining an average of the plurality of measurement values; the average value is the weight of the goods to be measured.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
according to the weighing method and the weighing system of the belt scale, the average value of the measured weights determined by the plurality of weighing areas is determined as the weight of the final goods, and errors caused by a single weighing area are reduced. In addition, in order to ensure the weighing precision, each weighing area is subjected to error compensation, namely, each weighing area is subjected to real-time verification, so that the error of goods in the transmission process is avoided, and the weighing precision of the belt scale is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a schematic flow chart of a weighing method of a belt scale according to the present invention;
fig. 2 is a schematic structural diagram of a weighing system of a belt scale according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a weighing method and a weighing system of a belt scale, which solve the problem of low weighing precision of the belt scale in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a schematic flow chart of a weighing method of a belt scale according to the present invention, and as shown in fig. 1, the weighing method of a belt scale according to the present invention includes:
s101, acquiring the length of a conveyor belt of the belt scale.
S102, determining a plurality of weighing areas according to the length of the conveyor belt; and a pressure sensor is arranged in each weighing area.
And S103, acquiring the known weight of the known goods.
And S104, acquiring the weighing weight of the known goods on each weighing area.
And acquiring the conveying speed and the conveying time of the conveying belt.
And converting the pressure signal acquired by the pressure sensor of each weighing area into a weight value.
And determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
S105, determining a weight error value of each weighing area according to each weighing weight and the known weight.
And S106, compensating the corresponding weighing area according to the weight error value, and determining the compensated weighing area.
Determining weights with corresponding weights according to the weight error values corresponding to the weighing areas;
and compensating the corresponding weighing area by using the weight, and determining the compensated weighing area.
S107, weighing the goods to be measured according to each compensated weighing area, and determining the weight of the goods to be measured.
Weighing the goods to be measured according to each compensated weighing area, and determining a plurality of measurement values;
determining an average of a plurality of measurements; the average value is the weight of the goods to be measured.
Fig. 2 is a schematic structural diagram of a weighing system of a belt scale according to the present invention, and as shown in fig. 2, the weighing system of the belt scale includes: a length obtaining module 201, a weighing area determining module 202, a known weight obtaining module 203, a weighing weight obtaining module 204, a weight error value determining module 205, a compensated weighing area determining module 206 and a weight determining module 207 of the goods to be measured.
The length acquiring module 201 is used for acquiring the length of a conveyor belt of the belt scale.
The weighing area determining module 202 is used for determining a plurality of weighing areas according to the length of the conveyor belt; and a pressure sensor is arranged in each weighing area.
The known weight obtaining module 203 is used to obtain the known weight of the known cargo.
The weighing weight obtaining module 204 is configured to obtain a weighing weight of the known cargo on each weighing area.
The weight error value determination module 205 is configured to determine a weight error value for each of the weighing zones based on each of the weighed weights and the known weight.
The compensated weighing zone determining module 206 is configured to compensate the corresponding weighing zone according to the weight error value, and determine the compensated weighing zone.
The weight determining module 207 of the goods to be measured is used for weighing the goods to be measured according to each compensated weighing area and determining the weight of the goods to be measured.
The weighing weight obtaining module 204 specifically includes: a transmission data acquisition unit, a data conversion unit, and a weighing weight determination unit.
The transmission data acquisition unit is used for acquiring the transmission speed and the transmission time of the transmission belt.
The data conversion unit is used for converting the pressure signals collected by the pressure sensors in each weighing area into weight values.
The weighing weight determining unit is used for determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
The compensated weighing region determining module 206 specifically includes: a weight determining unit and a compensated weighing area determining unit.
The weight determining unit is used for determining weights with corresponding weights according to the weight error value corresponding to each weighing area.
And the compensated weighing area determining unit is used for compensating the corresponding weighing area by using the weight to determine the compensated weighing area.
The module 207 for determining the weight of the cargo to be measured specifically includes: a measured value determining unit and a weight determining unit of the goods to be measured.
And the measured value determining unit is used for weighing the goods to be measured according to each compensated weighing area and determining a plurality of measured values.
The weight determining unit of the goods to be measured is used for determining the average value of a plurality of measured values; the average value is the weight of the goods to be measured.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. For the system disclosed by the embodiment, the description is relatively simple because the system corresponds to the method disclosed by the embodiment, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (8)
1. A method of weighing a belt scale, comprising:
acquiring the length of a conveyor belt of a belt scale;
determining a plurality of weighing zones according to the length of the conveyor belt; a pressure sensor is arranged in each weighing area;
acquiring the known weight of the known cargo;
acquiring the weighing weight of the known goods on each weighing area;
determining a weight error value for each of the weighing zones based on each of the weighed weights and the known weight;
compensating the corresponding weighing area according to the weight error value, and determining the compensated weighing area;
and weighing the goods to be measured according to each compensated weighing area, and determining the weight of the goods to be measured.
2. The method of claim 1, wherein said obtaining a weight of said known load on each of said weighing zones comprises:
acquiring the conveying speed and the conveying time of the conveying belt;
converting the pressure signal acquired by the pressure sensor of each weighing area into a weight value;
and determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
3. The method of claim 1, wherein the compensating the corresponding weighing zone according to the weight error value and determining the compensated weighing zone comprises:
determining weights with corresponding weights according to the weight error values corresponding to the weighing areas;
and compensating the corresponding weighing area by using the weight, and determining the compensated weighing area.
4. The method of claim 1, wherein the step of weighing the load according to each compensated weighing region to determine the weight of the load comprises:
weighing the goods to be measured according to each compensated weighing area, and determining a plurality of measurement values;
determining an average of a plurality of measurements; the average value is the weight of the goods to be measured.
5. A weighing system for a belt scale, comprising:
the length acquisition module is used for acquiring the length of a conveyor belt of the belt scale;
the weighing area determining module is used for determining a plurality of weighing areas according to the length of the conveyor belt; a pressure sensor is arranged in each weighing area;
the known weight obtaining module is used for obtaining the known weight of the known goods;
the weighing weight acquisition module is used for acquiring the weighing weight of the known goods on each weighing area;
a weight error value determination module for determining a weight error value for each of the weighing zones based on each of the weighing weights and the known weight;
the compensated weighing area determining module is used for compensating the corresponding weighing area according to the weight error value and determining the compensated weighing area;
and the weight determining module of the goods to be detected is used for weighing the goods to be detected according to each compensated weighing area and determining the weight of the goods to be detected.
6. The weighing system of claim 5, wherein the weigh weight acquisition module specifically comprises:
a transmission data acquisition unit for acquiring a transmission speed and a transmission time of the conveyor belt;
the data conversion unit is used for converting the pressure signals acquired by the pressure sensors in each weighing area into weight values;
and the weighing weight determining unit is used for determining the weighing weight of the known goods on each weighing area according to the weight value, the conveying speed and the conveying time.
7. The weighing system of claim 5, wherein the compensated weighing zone determining module specifically comprises:
the weight determining unit is used for determining weights with corresponding weights according to the weight error values corresponding to the weighing areas;
and the compensated weighing area determining unit is used for compensating the corresponding weighing area by using the weights and determining the compensated weighing area.
8. The weighing system of claim 5, wherein the weight determining module of the cargo to be weighed specifically comprises:
the measured value determining unit is used for weighing the goods to be measured according to each compensated weighing area and determining a plurality of measured values;
a weight determination unit for the cargo to be measured for determining an average of the plurality of measurement values; the average value is the weight of the goods to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164431.7A CN111307255A (en) | 2020-03-11 | 2020-03-11 | Weighing method and system of belt scale |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010164431.7A CN111307255A (en) | 2020-03-11 | 2020-03-11 | Weighing method and system of belt scale |
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| Publication Number | Publication Date |
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| CN111307255A true CN111307255A (en) | 2020-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010164431.7A Pending CN111307255A (en) | 2020-03-11 | 2020-03-11 | Weighing method and system of belt scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118067228A (en) * | 2024-04-25 | 2024-05-24 | 锐马（福建）电气制造有限公司 | Belt scale weighing method based on double weighing data self-matching speed-up |
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2020
- 2020-03-11 CN CN202010164431.7A patent/CN111307255A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2007316029A (en) * | 2006-05-29 | 2007-12-06 | Yamato Scale Co Ltd | Multiple type weight-sorting machine |
| CN101435718A (en) * | 2008-12-22 | 2009-05-20 | 徐州市三原技术产业有限公司 | Multiple-sensor information fusion apperceive compensation method and system of electronic belt weigher |
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| CN102494753A (en) * | 2011-11-25 | 2012-06-13 | 云南建水锰矿有限责任公司 | Method for calibrating electronic belt scale |
| CN104019881A (en) * | 2014-06-20 | 2014-09-03 | 广东中烟工业有限责任公司 | Condition monitoring system for electronic belt scale |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN118067228A (en) * | 2024-04-25 | 2024-05-24 | 锐马（福建）电气制造有限公司 | Belt scale weighing method based on double weighing data self-matching speed-up |
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