CN104880242A

CN104880242A - Calibration device and method of double-loader electronic belt scale

Info

Publication number: CN104880242A
Application number: CN201510347657.XA
Authority: CN
Inventors: 田柏林; 陈建民; 王文清; 任安祥; 李萍; 陈耕; 任凤国; 张春芝; 牛小铁; 颜景刚
Original assignee: BEIJING COAL MINING ELECTRIC EQUIPMENT TECHNICAL DEVELOPMENT Co Ltd; Beijing University of Technology
Current assignee: BEIJING COAL MINING ELECTRIC EQUIPMENT TECHNICAL DEVELOPMENT Co Ltd; Beijing University of Technology
Priority date: 2015-06-19
Filing date: 2015-06-19
Publication date: 2015-09-02
Anticipated expiration: 2035-06-19
Also published as: CN104880242B

Abstract

The invention provides a calibration device and method of a double-loader electronic belt scale. The device comprises a belt, a first loader, a second loader, a speed measuring sensor and a weighing instrument. The first loader comprises a first weighing sensor. The second loader comprises a second weighing sensor. The weighing instrument is electrically connected with the first weighing sensor and the second weighing sensor respectively. A first interface and a second interface of the weighing instrument are respectively used for collecting gravity signals of transmitted materials measured by the first weighing sensor and the second weighing sensor in time intervals such as a preset first time interval, a calibration period and a preset second time interval; a third interface is used for receiving transmission speed signals sent by the speed measuring sensor; and a signal processing unit is used for calculating a second calibration coefficient of the first loader, for calculating a second calibration coefficient so as to finish calibrating the second loader, and for calculating a third calibration coefficient of the first loader so as to finish calibrating the first loader.

Description

Calibration device and method for double-loader electronic belt scale

Technical Field

The embodiment of the invention relates to the technical field of electronic belt weighers, in particular to a calibration device and method of a double-loader electronic belt weigher.

Background

In recent years, the coal mine industry is rapidly developed, in order to avoid hidden dangers of stealing tax evasion and excessive mining and digging to destroy resources, the coal yield of each coal mine is accurately mastered, and a mining industry yield remote tax control system is developed at the right moment. Along with the popularization of the mining industry yield remote tax control system, more and more coal mines adopt an electronic belt scale as a main means of yield measurement.

Although the electronic belt scale has high metering precision, the daily maintenance amount is large, and particularly the calibration work of the electronic belt scale is carried out. In the prior art, a hanging code calibration method, a chain code calibration method, a real object calibration method and a calibration method of a dual-electronic belt scale are mainly adopted to calibrate the electronic belt scale. In the hanging code calibration method, the chain code calibration method and the object calibration method, after the belt is stopped, hanging codes, chain codes or objects are placed on the belt for calibration operation, so that the electronic belt scale has large workload during calibration and seriously influences the production progress.

In order to reduce workload and ensure production progress, a calibration method of a double-electronic belt scale is adopted in the prior art. In the method, two electronic belt scales are arranged on the same belt, each electronic belt scale consists of a loader and a weighing instrument, one electronic belt scale is used as a main scale, and the other electronic belt scale is used as an auxiliary scale. During calibration, scale A is calibrated by scale B, so that the two scales obtain the same accumulated amount in the same time interval. And then, applying weights or materials with known mass on the B scale, completing the calibration of the B scale by taking the accumulated amount of the known mass on the B scale as a reference, and finally completing the calibration of the A scale by the B scale. In the method, when the weight or the material with known mass is applied to the B scale, the weight or the material needs to be loaded at a specified position through a specific weight loading mechanism or a specific material loading mechanism, so that the device required by the method for calibration is complex in structure and high in manufacturing cost, and the maintenance amount of the calibration device of the electronic belt scale is increased.

Disclosure of Invention

The embodiment of the invention provides a calibration device and method for a double-loader electronic belt scale. The device realizes that no weight loading mechanism or material loading mechanism is required to load at a designated position when the electronic belt scale is calibrated, and the device is not stopped when the electronic belt scale is calibrated, so that the production progress is ensured.

The embodiment of the invention provides a calibration device of a double-loader electronic belt scale, which comprises: the device comprises a belt for conveying materials, a first loader, a second loader, a speed measuring sensor for measuring the conveying speed of the belt and a weighing instrument;

the first loader and the second loader are sequentially arranged below the belt along the material conveying direction;

the first loader comprises a first weighing sensor for measuring the gravity above the belt, the second loader comprises a second weighing sensor for measuring the gravity above the belt, and the weighing instrument is electrically connected with the first weighing sensor, the second weighing sensor and the speed measuring sensor respectively;

wherein the weighing instrument comprises: the central control element is electrically connected with the first interface, the second interface, the third interface and the signal processing unit respectively;

the first interface is used for collecting the gravity signal s of the transmission material measured by the first weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_A1i，s_A2i，s_A3i；

The second interface is used for collecting the gravity signal s of the transmission material measured by the second weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_B1i，s_B2i，s_B3iWherein i is a positive integer;

the third interface is used for receiving a transmission speed signal v sent by the speed measurement sensor;

the signal processing unit is used for controlling the central control element according to a preset second valueS collected over a time_A1iS of said s_B1iAnd v, calculating a second calibration coefficient of the first loader

Wherein n is₁Is a positive integer greater than 1, k_A1，U_A0Respectively, the first calibration coefficient, the zero value, k of the first loader_B1，U_B0Respectively a first calibration coefficient and a zero value of the second loader;

the signal processing unit is also used for controlling a central control element according to the k_A2A pre-stored standard loading cumulative quantity M, a pre-stored ith gravity signal s in the M_TiAnd said s collected during a calibration period_A2iS of said s_B2iAnd v, calculating a second calibration coefficient of the second loader

To complete the calibration of the second carrier, wherein n_TIs a positive integer greater than 1;

the signal processing unit is also used for controlling a central control element according to the k_B2And s is collected within a preset second time_A3i，s_B3iAnd v, calculating a third calibration coefficient of the first loader

To complete calibration of the first carrier.

The embodiment of the invention provides a calibration method of a double-loader electronic belt scale, which comprises the following steps:

the weighing instrument respectively collects gravity signals s of materials transmitted on a belt and measured by a first weighing sensor of a first loader at equal time intervals in preset first time through a first interface and a second interface_A1iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B1iReceiving a transmission speed signal v sent by a speed measuring sensor through a third interface, wherein i is a positive integer;

the signal processing unit of the weighing instrument collects s within a preset first time_A1iS of said s_B1iAnd v, calculating a second calibration coefficient of the first loader

the weighing instrument passes through the first interfaceThe second interface collects the gravity signal s of the materials transmitted on the belt measured by the first weighing sensor of the first loader at equal time intervals in the calibration period_A2iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B2i；

The information calculation unit of the weighing instrument is based on the k_A2A pre-stored standard loading cumulative quantity M, a pre-stored ith gravity signal s in the M_TiAnd said s collected during a calibration period_A2iS of said s_B2iAnd v, calculating a second calibration coefficient of the second loader

the weighing instrument collects the gravity signal s of the material transmitted on the belt measured by the first weighing sensor of the first loader at equal time intervals in preset second time through the first interface and the second interface_A3iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B3i；

The signal processing unit of the weighing instrument is based on the k_B2And s is collected within a preset second time_A3i，s_B3iAnd v, calculating a third calibration coefficient of the first loader

To complete calibration of the first carrier.

The embodiment of the invention provides a calibration device and a method for a double-loader electronic belt scale, wherein the device comprises: the device comprises a belt for conveying materials, a first loader, a second loader, a speed measuring sensor for measuring the conveying speed of the belt and a weighing instrument; the first loader and the second loader are sequentially arranged below the belt along the material conveying direction; the first loader comprises a first weighing sensor for measuring the gravity above the belt, the second loader comprises a second weighing sensor for measuring the gravity above the belt, and the weighing instrument is electrically connected with the first weighing sensor, the second weighing sensor and the speed measuring sensor respectively; wherein, the weighing instrument includes: first interface, second interface, third interface, central control element and informationThe signal processing unit is electrically connected with the first interface, the second interface, the third interface and the signal processing unit respectively; a first interface for collecting the gravity signal s of the transmission material measured by the first weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_A1i，s_A2i，s_A3i(ii) a A second interface for collecting the gravity signal s of the transmission material measured by the second weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_B1i，s_B2i，s_B3iWherein i is a positive integer; the third interface is used for receiving a transmission speed signal v sent by the speed measurement sensor; a signal processing unit for acquiring s within a preset first time under the control of the central control element_A1i，s_B1iV, calculating a second calibration coefficient of the first loader

Wherein n is₁Is a positive integer greater than 1, k_A1，U_A0Respectively, the first calibration coefficient, the zero value, k of the first loader_B1，U_B0Respectively a first calibration coefficient and a zero value of the second loader; a signal processing unit for further processing the signal according to k under the control of the central control element_A2A pre-stored standard loading cumulative quantity M, a pre-stored ith gravity signal s in the M_TiAnd s collected during the calibration period_A2i，s_B2iV, calculating a second calibration coefficient of the second loader

To complete the calibration of the second carrier, where n_TIs a positive integer greater than 1; a signal processing unit for further processing the signal according to k under the control of the central control element_B2And s collected within a preset second time_A3i，s_B3iV, calculating a third calibration coefficient of the first loader

To complete the calibration of the first carrier. The device realizes that no weight loading mechanism or material loading mechanism is required to load at a designated position when the electronic belt scale is calibrated, and the device is not stopped when the electronic belt scale is calibrated, so that the production progress is ensured.

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 description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a first structural diagram of a first calibration device of a dual-carrier electronic belt scale according to an embodiment of the present invention;

fig. 2 is a second structural schematic diagram of a first calibration device of the dual-carrier electronic belt scale according to the present invention;

FIG. 3 is a third schematic structural diagram of a first calibration apparatus of a dual-carrier electronic belt scale according to an embodiment of the present invention;

fig. 4 is a flowchart of a first embodiment of a calibration method of the dual-carrier electronic belt scale of the present invention.

Description of the symbols:

1-belt 2-first carrier 21-first load cell

3-second carrier 31-second weighing sensor 4-tacho-sensor

5-weighing instrument 51-first interface 52-second interface

53-third interface 54-central control element 55-signal processing unit

6-material 7-standard chain code 8-driving roller

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. 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.

Fig. 1 is a first structural schematic diagram of a first calibration device of a dual-carrier electronic belt scale according to the present invention, fig. 2 is a second structural schematic diagram of the first calibration device of the dual-carrier electronic belt scale according to the present invention, wherein fig. 1 is a structural schematic diagram of electrical connection of components of the calibration device of the dual-carrier electronic belt scale, and fig. 2 is a structural schematic diagram of mechanical connection and electrical connection of components of the calibration device of the dual-carrier electronic belt scale. As shown in fig. 1 and 2, the calibration apparatus of the dual-carrier electronic belt scale in the present embodiment includes: the device comprises a belt 1 for conveying materials 6, a first loader 2, a second loader 3, a speed measuring sensor 4 for measuring the conveying speed of the belt and a weighing instrument 5.

In this embodiment, the first carrier 2 and the second carrier 3 are sequentially disposed below the belt 1 along the material conveying direction.

In this embodiment, the first carrier 2 includes a first load cell 21 for measuring the gravity above the belt 1, the second carrier 3 includes a second load cell 31 for measuring the gravity above the belt 1, and the weighing instrument 5 is electrically connected to the first load cell 21, the second load cell 31 and the speed sensor 4, respectively.

Wherein, weighing instrument 5 includes: the first interface 51, the second interface 52, the third interface 53, the central control element 54 and the signal processing unit 55, wherein the central control element 54 is electrically connected with the first interface 51, the second interface 52, the third interface 53 and the signal processing unit 55 respectively.

A first interface 51, configured to collect the gravity signal s of the material to be conveyed measured by the first weighing sensor 21 at equal time intervals within a preset first time, a calibration period, and a preset second time_A1i，s_A2i，s_A3i。

A second interface 52, configured to collect the gravity signal s of the transported material measured by the second weighing sensor 31 at equal time intervals within a preset first time, a calibration period, and a preset second time respectively_B1i，s_B2i，s_B3iWherein i is a positive integer.

And the third interface 53 is configured to receive the transmission speed signal v sent by the speed measurement sensor 4.

A signal processing unit 55 for acquiring s according to a preset first time under the control of the central control element 54_A1i，s_B1iV, calculating a second calibration coefficient of the first loader

Wherein n is₁Is a positive integer greater than 1, k_A1，U_A0Respectively, the first calibration coefficient, the zero value, k of the first loader_B1，U_B0Respectively, the first calibration coefficient and the zero value of the second loader.

Information number processing unit 55, also for processing according to k under the control of central control element 54_A2A pre-stored standard loading cumulative quantity M in a calibration period, and an ith gravity signal s in the pre-stored M_TiAnd s collected during the calibration period_A2i，s_B2iV, calculating a second calibration coefficient of the second loader

To complete the calibration of the second carrier, wherein n_TIs a positive integer greater than 1.

A signal processing unit 55, further for controlling the central control element 54 according to k_B2And s collected within a preset second time_A3i，s_B3iV, calculating a third calibration coefficient of the first loader

To complete the calibration of the first carrier.

Specifically, in this embodiment, as shown in fig. 2, in the calibration device of the dual-carrier electronic belt scale, the belt 1 is sleeved on the driving rollers 8 at two ends, and the driving rollers 8 drive the belt to transport the material. First loader 2 and second loader 3 set gradually in belt 1 below along material direction of delivery, and tacho sensor 4 sets up in the belt below to contact with the belt. The first load cell 21 is arranged inside the first carrier 2 and the second load cell 31 is arranged inside the second load cell. The first load cell 21 and the second load cell 31 measure the weight force above the same belt 1.

In this embodiment, the weighing instrument 5 is electrically connected to the first weighing sensor 21 through the first interface 51, the first interface 51 is used to collect the gravity signal of the transported material measured by the first weighing sensor 21 at equal time intervals under the control of the central control element 54, the weighing instrument 5 is electrically connected to the second weighing sensor 31 through the second interface 52, the second interface 52 is used to collect the gravity signal of the transported material measured by the second weighing sensor at equal time intervals under the control of the central control element 54, and the weighing instrument 5 is electrically connected to the speed sensor 4 through the third interface 53. The third interface 53 is used for receiving the transmission speed signal sent by the speed sensor 4 under the control of the central control element 54.

Specifically, in this embodiment, the first interface 51 and the second interface 52 simultaneously acquire the gravity signal s of the conveyed material measured by the first load cell 21 and the second load cell 31 at equal time intervals within a preset first time_A1i，s_B1i. Wherein the preset first time and the time interval can be preset. If the preset first time may be a time required for the belt to run for a full circle when the belt 1 transfers the material or a time required for the belt to run for a preset length, the time interval may be 2 seconds, 4 seconds, or the like, or may be other values, which is not limited in this embodiment.

In the present embodiment, the first and second electrodes are,

s_{A 1 i} = {s_{A 11}, s_{A 12}, s_{A 13}, ..., s_{{Aln}_{1}}} - - - (1)

s_{B 1 i} = {s_{B 11}, s_{B 12}, s_{B 13}, ..., s_{{Bln}_{1}}} - - - (2)

wherein, i is 1,2,3₁Is a positive integer, n₁The number of gravity signals collected by the second load cell 31 in a preset first time period is the number of the first load cell 21.

Specifically, in this embodiment, the first interface 51 and the second interface 52 simultaneously acquire the gravity signal s of the transported material measured by the first weighing sensor 21 and the second weighing sensor 31 at equal time intervals in the calibration period_A2i，s_B2i. Wherein the calibration period is an integral multiple of the time required for the belt 1 to run for a full turn. The time interval may be 2 seconds, 4 seconds, or other values, which is not limited in this embodiment.

In this embodiment, the first interface 51 and the second interface 52 simultaneously collect the first weighing at equal time intervals in the calibration periodGravity signal s of the conveyed material measured by the sensor 21 and the second weighing sensor 31_A2i，s_B2iTime is a gravity signal acquired after a preset first time. Wherein,

s_{A 2 i} = {s_{A 21}, s_{A 22}, s_{A 23}, ..., s_{A 2 n_{T}}} - - - (3)

s_{B 2 i} = {s_{B 21}, s_{B 22}, s_{B 23}, ..., s_{B 2 n_{T}}} - - - (4)

wherein, i is 1,2,3₂Is a positive integer, n_TThe number of gravity signals collected by the first load cell 21 and the second load cell 31 during a calibration period.

Specifically, in this embodiment, the first interface 51 and the second interface 52 simultaneously acquire the gravity signal s of the conveyed material measured by the first load cell 21 and the second load cell 31 at equal time intervals within a preset second time period_A3i，s_B3i. Wherein the preset second time and the time interval can be preset. For example, the preset second time may be a time required for the belt 1 to travel a full circle when transporting the material 6 or a time required for the belt to travel a preset length, and the time interval may be 2 seconds, 4 seconds, etc., or other values, which is not limited in this embodiment.

In this embodiment, the first interface 51 and the second interface 52 simultaneously collect the gravity signal s of the transported material measured by the first weighing sensor 21 and the second weighing sensor 31 at equal time intervals within a preset second time_A3i，s_B3iTime is the gravity signal acquired after the calibration period.

In the present embodiment, the first and second electrodes are,

s_{A 3 i} = {s_{A 31}, s_{A 32}, s_{A 33}, ..., s_{A 3 n_{3}}} - - - (5)

s_{B 3 i} = {s_{B 31}, s_{B 32}, s_{B 33}, ..., s_{B 3 n_{3}}} - - - (6)

wherein, i is 1,2,3₃Is a positive integer, n₃The number of gravity signals collected by the second load cell 31 in the preset second time period is the number of the first load cell 21.

In this embodiment, the first interface 51 and the second interface 52 simultaneously collect the gravity signal s of the transported material measured by the first load cell 21 and the second load cell 31 at equal time intervals within a preset first time period_A1i，s_B1iThen, the signal processing unit 55 of the weighing instrument 5 is used for collecting s according to a preset first time under the control of the central control element 54_A1i，s_B1iV, calculating a second calibration coefficient of the first loader 2

Specifically, in the present embodiment, first, the signal processing unit55 according to s for_A1iV and a first calibration factor k for the first carrier_A1Calculating the first material accumulation amount M of the first carrier_A1. Wherein,

wherein, the first calibration coefficient k of the first loader_A1And the calibration coefficient of the first carrier when the first carrier conveys the materials in the belt at the preset first time is obtained. U shape_A0Is the null value of the first carrier.

Then a signal processing unit 55 for scaling the coefficient k according to the second carrier_B1And s collected within a preset first time_B1iV, calculating the first material cumulant M of the second carrier 3_B1. Wherein,

wherein the first calibration factor k of the second carrier 3_B1And the calibration coefficient of the second carrier when the second carrier conveys the materials in the belt at the preset first time is obtained. U shape_B0Is the null value of the second carrier.

Finally, a signal processing unit 55 for determining a first material accumulation M on the basis of the first carrier_A1And a first material accumulation M of the second carrier_B1Calculating a second calibration coefficient k of the first carrier_A2。

Wherein,

The same belt 1 above the first carrier 2 and the second carrier 3 is conveying the material 6 in a preset first time, and the weighing instrument 5 passes through the material conveying processThe first interface 51 and the second interface 52 respectively collect the gravity signal s of the material conveyed on the belt measured by the first weighing sensor 21 of the first loader 2 at equal time intervals_A1iThe gravity signal s of the material conveyed on the belt measured by the second load cell 31 of the second carrier 3_B1iAnd the transmission speed signals v sent by the speed measuring sensor are received by the third interface 53 to be equal, and if the first loader and the second loader are calibrated loaders, the first material cumulant M of the first loader is calculated_A1And a first material accumulation M of the second carrier_B1In the embodiment, the second carrier is assumed to be a calibrated carrier, and the second calibration coefficient k of the first carrier is determined based on the second carrier_A2。

In this embodiment, the first interface 51 and the second interface 52 are configured to simultaneously acquire the gravity signal s of the transported material measured by the first load cell 21 and the second load cell 31 at equal time intervals in a calibration period after a preset first time_A2i，s_B2iThe signal processing unit 55 is then also arranged to be controlled by the central control element 54 in dependence on k_A2Pre-stored standard loading cumulative quantity M, pre-stored ith gravity signal s in M_TiAnd acquired during a calibration periodV, calculating a second calibration coefficient k of the second loader_B2To complete the calibration of the second carrier, wherein n_TIs a positive integer greater than 1.

Specifically, first, the signal processing unit 55 is configured to process the signal according to s_A2iV and a second calibration factor k for the first carrier_A2Calculating the accumulated amount M of the second material of the first loader in the calibration period_A2。

Wherein,

wherein, the second calibration coefficient k of the first loader_A2The calibration coefficient of the first loader is adjusted by taking the second loader as a reference. n is_TThe number of the gravity signals collected by the first loader in the calibration period is shown.

Then a signal processing unit 55 for processing the signal according to s_B2iGravity signal s in a pre-stored standard loading cumulant M_TiV and a first calibration factor k for the second carrier_B1Calculating the standard loading cumulant M of the second material of the second carrier_B2. Wherein,

in this embodiment, the second material standard loading cumulative amount M_B2Which represents the cumulative total amount of material and standard load collected from the second load cell 31 during a calibration period after a predetermined first time.

Wherein n is_TThe number of the gravity signals collected by the first loader in the calibration period is shown. s_TiThe ith gravity signal in the standard loading accumulated quantity M is prestored for the second carrier in a calibrated state.

Wherein,

s_{T i} = {s_{T 1}, s_{T 2}, s_{T 3}, ..., s_{{Tn}_{T}}} - - - (12)

wherein, i is 1,2,3_TAnd is a positive integer.

Finally, a signal processing unit 55 for determining the cumulative amount M of the second material on the basis of the first carrier 2_A2And the second material standard loading cumulant M of the second loader_B2And the pre-stored standard loading cumulant M and the first calibration coefficient k of the second loader_B1Calculating a second calibration coefficient k of the second carrier_B2To complete calibration of the second carrier.

Wherein,

in this embodiment, the calibration coefficient of the first carrier 2 is adjusted for the first time, that is, the second calibration coefficient k of the first carrier is determined_A2Then, the first load cell 21 of the first carrier 2 and the second load cell 31 of the second carrier 3 measure gravity signals on the same belt within a calibration time, and when the signal processing unit 55 of the weighing instrument 5 calculates the cumulative amounts of the materials, the cumulative amounts of the materials of the first carrier 2 and the second carrier 3 are the same. A signal processing unit 55 for the second carrier3 on the basis of the material accumulation amount, accumulating a standard loading accumulation amount M for the second load carrier, taking the standard loading accumulation amount M as a reference, and calculating a second calibration coefficient k of the second load carrier according to the current first calibration coefficient of the second load carrier_B2A second calibration factor k of the second carrier_B2Namely the calibrated coefficient of the second loader, so as to complete the calibration of the second loader.

In this embodiment, the first interface 51 and the second interface 52 are configured to simultaneously acquire the gravity signal s of the transported material measured by the first load cell 21 and the second load cell 31 at equal time intervals within a second time preset after the calibration period_A3i，s_B3iThe signal processing unit 55 is then also arranged to be controlled by the central control element 54 in dependence on k_B2And s collected within a preset second time_A3i，s_B3iV, calculating a third calibration coefficient of the second loader

To complete calibration of the second carrier.

Specifically, in the present embodiment, first, the signal processing unit 55 is configured to process the signal according to s_A3iV and a second calibration factor k for the first carrier_A3Calculating the accumulated quantity M of the third material of the first loader in a preset second time_A3。

Wherein,

wherein n is₃The number of the gravity signals collected by the first loader in the preset second time is obtained.

Then a signal processing unit 55 for processing the signal according to s_B3iV and a second calibration factor k for the second carrier_B2Calculating the third material accumulation amount M of the second carrier_B3. Wherein,

finally, a signal processing unit 55 for accumulating M according to the third material of the first carrier_A3Second calibration factor k of the first carrier_A2And a second carrierThird material accumulation amount M_B3Calculating a third calibration coefficient k of the first carrier_A3To complete the calibration of the first carrier.

Wherein,

in this embodiment, the first calibration coefficient of the second carrier is adjusted to determine the second calibration coefficient k of the second carrier_B2Then, the second carrier is a calibrated carrier, the gravity signals of the same belt in a preset second time are measured by the first weighing sensor 21 of the first carrier 2 and the second weighing sensor 31 of the second carrier 3, and when the accumulation amount of the material is calculated, the accumulation amount of the material is the same. The signal processing unit 55 calibrates the first carrier based on the third material accumulation amount of the second carrier, calculates a calibration coefficient in a standard state, and calculates a third calibration coefficient k of the first carrier_A3Namely the calibration coefficient after the first loader is calibrated, and the calibration of the first loader is finished.

The calibration device of the electronic belt scale with double loaders provided by the embodiment comprises: the device comprises a belt for conveying materials, a first loader, a second loader, a speed measuring sensor for measuring the conveying speed of the belt and a weighing instrument; the first loader comprises a first weighing sensor for measuring the gravity above the belt, the second loader comprises a second weighing sensor for measuring the gravity above the belt, and the weighing instrument is electrically connected with the first weighing sensor, the second weighing sensor and the speed measuring sensor respectively; wherein, the weighing instrument includes: a first interface, a second interface, a third interface, a central control element and a signal processing unit, wherein the central control element is respectively connected with the first interface and the second interfaceThe interface, the third interface and the signal processing unit are electrically connected; a first interface for collecting the gravity signal s of the transmission material measured by the first weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_A1i，s_A2i，s_A3i(ii) a A second interface for collecting the gravity signal s of the transmission material measured by the second weighing sensor at equal time intervals in a preset first time, a calibration period and a preset second time respectively_B1i，s_B2i，s_B3iWherein i is a positive integer; the third interface is used for receiving a transmission speed signal v sent by the speed measurement sensor; a signal processing unit for acquiring s within a preset first time under the control of the central control element_A1i，s_B1iV, calculating a second calibration coefficient of the first loader

Wherein n is₁Is a positive integer greater than 1, k_A1，U_A0Respectively, the first calibration coefficient, the zero value, k of the first loader_B1，U_B0Respectively a first calibration coefficient and a zero value of the second loader; a signal processing unit for further processing the signal according to k under the control of the central control element_A2Pre-stored standard loading cumulative quantity M, pre-stored ith gravity signal s in M_TiAnd s collected during the calibration period_A2i，s_B2iV, calculating a second calibration coefficient of the second loader

Further, as shown in fig. 3, in this embodiment, the calibration apparatus of the dual-carrier electronic belt scale further includes: standard chain code 7.

Wherein, standard chain sign indicating number 7 sets up on the belt of second loader 3 top, contacts with the belt and belt support frame fixed connection, and weighing instrument 5 still includes: and the memory chip is electrically connected with the central control element 54.

A second interface 52, further used for collecting the gravity signal s of the standard chain code 7 measured by the second weighing sensor 31 at equal time intervals in the initial calibration period_Ti。

Specifically, in the present embodiment, when the dual-carrier electronic belt scale device is first installed, the first carrier 21 and the second carrier 31 both have the initial calibration coefficient k_AT，k_BTThe initial calibration coefficient k_AT，k_BTThe calibration coefficients of the first carrier 2 and the second carrier 3 at the time of factory shipment are obtained.

Set up standard chain sign indicating number 7 on the belt of second loader 3 top, contact with the belt, the belt support frame sets up in the belt below, and is static relatively on ground, with standard chain sign indicating number 7 and belt support frame fixed connection, standard chain sign indicating number 7 can not be to the transmission of belt transmission forward, remains in second loader top all the time. The load cell 31 of the second carrier 3 measures the gravity signal s of the standard chain code 7 in the initial calibration period_TiA second interface 52 of the weighing instrument 5, for collecting the gravity signal s of the standard chain code measured by the second load cell 31 at equal time intervals in the initial calibration period under the control of the central control element 54_Ti。

In this embodiment, the initial calibration period is a calibration period when the calibration coefficient of the second carrier 3 is the initial calibration coefficient, and the time of the initial calibration period is the same as the time of the calibration period after the preset first time.

And the signal processing unit 55 is used for calculating the standard loading cumulant M according to the unit weight L of the standard chain code and the initial calibration periods T and v. Wherein,

M＝L×v×T (18)

after the signal processing unit 55 calculates the standard load cumulative quantity M, the standard load cumulative quantity M and s are added under the control of the central control element 54_TiStoring into a memory chip.

In this embodiment, after the calibration device of the dual-carrier electronic belt scale is installed, the standard loading cumulant M and s of the second carrier are obtained through the standard chain code_TiAnd storing the accumulated quantity M and s, and obtaining the standard loading accumulated quantity M and s of the second loader without loading the accumulated quantity at a specific position by a specific weight loading mechanism or a material loading mechanism in the calibration of the subsequent double-loader electronic belt scale_TiThe calibration device is simple, and only one time of storing the standard loading cumulant M and s_TiThe calibration device has the advantages that multiple times of calibration work are carried out, so that the manufacturing cost of the calibration device is reduced, the maintenance amount of the calibration device of the double-loader electronic belt scale is reduced, and meanwhile, the efficiency of the calibration work is improved.

Further, as shown in fig. 3, in the calibration device of the dual-carrier electronic belt scale provided in this embodiment, the number of the first load cells 21 is at least two, and the number of the second load cells 31 is at least two.

Specifically, the number of the first load cells 21 is at least two, the number of the first interfaces 51 is equal to the number of the first load cells 21, the number of the second load cells 31 is at least two, and the number of the second interfaces 52 is equal to the number of the second load cells 31.

In this embodiment, in the calibration device of the dual-carrier electronic belt scale, the number of the first load cells 21 is at least two, and the number of the second load cells 31 is at least two, and when the signal processing unit 55 calculates each accumulated amount of the first carrier and each accumulated amount of the second carrier, the calculation is more accurate, so that the calculated calibration coefficients of the first carrier and the second carrier are more accurate.

Further, in the dual-carrier electronic belt scale provided by the embodiment, the standard chain weight 7 is fixedly connected with the belt supporting frame through a rope.

In this embodiment, the belt supporting bracket is disposed below the belt and is stationary relative to the ground, after the standard chain code 7 is fixedly connected to the belt supporting frame through a rope, when the standard chain code 7 is placed on the belt above the second carrier, in a state of belt transmission, the standard chain code 7 does not move forward along with the belt and is always kept above the second carrier, so that the signal processing unit 55 collects a gravity signal of the standard chain code of the second weighing sensor 31 of the second carrier 3, and the calculated cumulative amount is the standard loading cumulative amount of the second carrier 3.

In the embodiment, the standard chain code 7 is fixedly connected with the belt supporting frame through the rope, so that the standard chain code is more convenient to fix and is simple and feasible.

Fig. 4 is a flowchart of a first embodiment of a calibration method of the dual-carrier electronic belt scale of the present invention. As shown in fig. 4, the calibration method of the dual-carrier electronic belt scale in this embodiment includes:

101, the weighing instrument 5 collects gravity signals s of materials conveyed on a belt measured by a first weighing sensor 21 of a first loader 2 at equal time intervals in a preset first time through a first interface 51 and a second interface 52 respectively_A1iThe gravity signal s of the material conveyed on the belt measured by the second load cell 31 of the second carrier 3_B1iAnd receives the transmission speed signal v sent by the speed measuring sensor 4 through the third interface 53.

In this embodiment, the material 7 is continuously transported on the same belt 1 above the first carrier 2 and the second carrier 3, and in a preset first time, the weighing instrument 5, under the control of the central control element 54, acquires the gravity signal s of the material transported on the belt 1 measured by the first weighing sensor 21 of the first carrier 2 through the first interface 51 and the second interface 52 at equal time intervals respectively_A1iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B1i。

The preset first time may be time required for the belt 1 to run for a full circle when the belt transmits a material, or time required for the belt to transmit a preset length, which is not limited in this embodiment.

In this embodiment, the gravity signal s of the material conveyed on the belt 1 measured by the first weighing sensor 21 is collected through the first interface 51_A1iAnd the time interval of the second interface 52 is equal to the time interval of the second interface 52 for acquiring the gravity signal s of the material conveyed on the belt measured by the second weighing sensor 31_B1iAre the same. The time interval may be 2s, 4s, etc., or other values, which is not limited in this embodiment.

In this embodiment, the collected gravity signal s_A1iAnd s_B1iCan be expressed by the following formula (1) and formula (2). Wherein, i is 1,2,3₁Is a positive integer

102, the signal processing unit 55 of the weighing instrument 5 collects s according to the preset first time_A1i，s_B1iV, calculating a second calibration coefficient of the first loader 2

In this embodiment, step 102 can be performed in the following three steps.

102a, the signal processing unit 55 of the weighing instrument 5 calibrates the first calibration factor k according to the first carrier_A1And s collected within a predetermined first time_A1iV, calculating the first material cumulant M of the first carrier 2_A1Wherein M is_A1Can be represented by the formula (7).

Wherein, the first calibration coefficient k of the first loader_A1And the calibration coefficient of the first carrier when the first carrier conveys the materials in the belt at the preset first time is obtained.

102b, the signal processing unit 55 of the weighing instrument 5 calibrates the coefficient k according to the first calibration factor of the second carrier_B1And s collected within a preset first time_B1iV, calculating the first material cumulant M of the second carrier 3_B1Wherein M is_B1Can be represented by the formula (8).

Wherein the first calibration factor k of the second carrier 3_B1And the calibration coefficient of the second carrier when the second carrier conveys the materials in the belt at the preset first time is obtained.

102c, the signal processing unit 55 of the weighing instrument 5 accumulates the first material M according to the first material of the first carrier_A1And a first material accumulation M of the second carrier_B1Calculating a second calibration coefficient k of the first carrier_A2. Wherein k is_A2Can be represented by the formula (9).

103, the weighing instrument 5 collects the gravity signal s of the material conveyed on the belt measured by the first weighing sensor 21 of the first loader 2 at equal time intervals in the calibration period through the first interface 51 and the second interface 52_A2iThe gravity signal s of the material conveyed on the belt measured by the second load cell 31 of the second carrier 3_B2i

In this embodiment, the material 7 is continuously transported on the same belt 1 above the first carrier 2 and the second carrier 3, and the weighing meter 5, under the control of the central control element 54, collects the gravity signal s of the material transported on the belt measured by the first load cell 21 of the first carrier 2 at equal time intervals through the first interface 51 and the second interface 52 in a calibration period after a preset first time_A2iThe gravity signal s of the material conveyed on the belt measured by the second load cell 31 of the second carrier 3_B2i。

Wherein the calibration period may be an integer multiple of the time required for the belt 1 to run for one full turn. The gravity signal s of the material conveyed on the belt 1 measured by the first weighing sensor 21 is collected through the first interface 51_A2iAnd the time interval of the second interface 52 is equal to the time interval of the second interface 52 for acquiring the gravity signal s of the material conveyed on the belt measured by the second weighing sensor 31_B2iAre the same. The time interval may be 2s, 4s, etc., or other values, which is not limited in this embodiment.

In this embodiment, the collected gravity signal s_A2iAnd s_B2iCan representIs shown in formula (3) and formula (4).

Step 104, the information calculating unit 55 of the weighing instrument 5 calculates k_A2Pre-stored standard loading cumulative quantity M, pre-stored ith gravity signal s in M_TiAnd s collected during the calibration period_A2i，s_B2iV, calculating a second calibration coefficient of the second loader

To complete the calibration of the second carrier 3, where n_TIs a positive integer greater than 1.

In this embodiment, step 104 can be performed in the following three steps.

104a, the signal processing unit 55 of the weighing instrument 5 calibrates the coefficient k according to the first carrier_A2And s collected during the calibration period_A2iV, calculating the cumulative quantity M of the second material of the first carrier 2_A2Wherein M is_A2Can be expressed as shown in formula (10).

Wherein, the second calibration coefficient k of the first loader_A2The calibration coefficient of the first loader is adjusted by taking the second loader as a reference.

Step 104b, the signal processing unit 55 of the weighing instrument 5 loads the gravity signal s of the accumulated amount M according to the pre-stored standard_TiFirst calibration factor k of the second carrier_B1And s collected during the calibration period_B2iV, calculating the second material standard loading cumulant M of the second loader_B2. Wherein M is_B2Can be expressed as shown in (11).

104c, the signal processing unit 55 of the weighing instrument 5 according to the accumulated amount of the second material of the first carrier, the standard loading accumulated amount of the second material of the second carrier, the pre-stored standard loading accumulated amount M and the first loading accumulated amount of the second carrierCalibration factor k_B1Calculating a second calibration coefficient k of the second carrier_B2To complete calibration of the second carrier. Wherein k is_B2Can be represented by formula (13).

105, the weighing instrument 5 collects the gravity signal s of the material transmitted on the belt measured by the first weighing sensor of the first loader at equal time intervals in a preset second time through the first interface 51 and the second interface 52_A3iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B3i。

In this embodiment, the material 7 is continuously transported on the same belt 1 above the first carrier 2 and the second carrier 3, and the weighing meter 5 collects the gravity signal s of the material transported on the belt measured by the first load cell 21 of the first carrier 2 at equal time intervals through the first interface 51 and the second interface 52 under the control of the central control element 54 within a preset second time period after the calibration period_A2iThe gravity signal s of the material conveyed on the belt measured by the second load cell 31 of the second carrier 3_B2i。

The preset second time may be a time required for the belt 1 to run for a full circle when the belt transmits the material, or a time required for the belt to transmit a preset length, which is not limited in this embodiment.

In this embodiment, the gravity signal s of the material conveyed on the belt 1 measured by the first weighing sensor 21 is collected through the first interface 51_A3iAnd the time interval of the second interface 52 is equal to the time interval of the second interface 52 for acquiring the gravity signal s of the material conveyed on the belt measured by the second weighing sensor 31_B3iAre the same. The time interval may be 2s, 4s, etc., or other values, which is not limited in this embodiment.

In this embodiment, the collected gravity signal s_A3iAnd s_B3iCan be expressed by the following formulas (5) and (6).

Step 106, the signal processing unit 55 of the weighing instrument 5 is based on k_B2And collected during a predetermined second timeV, calculating a third calibration coefficient of the first loader

To complete the calibration of the first carrier.

In this embodiment, step 106 can be performed in the following three steps.

106a, the signal processing unit 55 of the weighing instrument 5 calibrates the coefficient k according to the first carrier_A2And s collected during a predetermined second time_A3iV, calculating the third material cumulant M of the first carrier 2_A3Wherein M is_A3Can be expressed as shown in formula (14).

106b, the signal processing unit 55 of the weighing instrument 5 calibrates the coefficient k according to the second carrier_B2And s collected within a preset second time_B3iV, calculating the third material cumulant M of the second carrier 3_B3Wherein M is_B3Can be represented by the formula (15).

Wherein the second calibration factor k of the second carrier 3_B2And the calibration coefficient of the second loader during the belt conveying of the materials in the preset second time is obtained.

106c, the signal processing unit 55 of the weighing instrument 5 accumulates the third material accumulation amount M according to the first carrier_A3And a third material accumulation amount M of the second carrier_B3Calculating a third calibration coefficient k of the first carrier_A3。k_A3Can be expressed as shown in formula (16).

The calibration method of the dual-carrier electronic belt scale provided by the embodiment is a calibration method based on the calibration device of the dual-carrier electronic belt scale, and the implementation principle and the technical effect are similar, and are not repeated here.

Further, in the calibration method of the dual-carrier electronic belt scale provided in this embodiment, the storing the standard loading cumulative quantity M in step 104 specifically includes:

first, the weighing instrument 5 is initially calibrated via the second interface 52Collecting the gravity signal s of the standard chain code measured by the second weighing sensor at equal time intervals in a fixed period_Ti. Wherein s is_TiCan be represented by the formula (12).

In this embodiment, the initial calibration period is a calibration period under an initial calibration coefficient of the second carrier when the calibration device of the dual-carrier electronic belt scale is installed. The initial calibration period is the same as the subsequent calibration period after the preset first time.

The signal processing unit 55 of the weighing apparatus 5 then calculates the nominal loading cumulative quantity M during the initial calibration period of the second carrier under the control of the central control unit 54.

Specifically, in the present embodiment, the signal processing unit 55 of the weighing instrument 5 calculates the standard loading cumulative quantity M in the initial calibration period according to the unit weight of the standard chain code, the initial calibration period T, ν. Wherein M is represented by formula (18).

Wherein, L represents the unit weight of the standard chain code, the unit is kg/m, T represents the initial calibration period, and v represents the transmission speed signal sent by the speed measurement sensor.

Finally, the weighing instrument stores the standard loading cumulant M and s through a storage chip_Ti。

Further, in this embodiment, the gravity signal s of the transported material measured by the first weighing sensor_A1i，s_A2i，s_A3iRespectively the average value of corresponding gravity signals measured by at least two first weighing sensors and the gravity signal s of the conveyed material measured by a second weighing sensor_B1i，s_B2i，s_B3iAnd gravity signal s of standard chain code_TiRespectively, the average value of the respective gravity signals measured by the at least two second load cells.

In this embodiment, the number of the first load cells 21 is at least two, the number of the second load cells 31 is at least two, and the gravity signal s of the transported material measured by the first load cell 21 is_A1i，s_A2i，s_A3iWhen s is_A1iAverage value, s, of the gravity signals measured by the at least two first weighing sensors 21 collected by the signal processing unit 55 at equal time intervals within a preset first time_A2iIs the average value, s, of the gravity signals measured by the at least two first weighing sensors 21 collected by the signal processing unit 55 at equal time intervals in the calibration period_A3iThe average value of the gravity signals measured by the at least two first weighing sensors collected at equal time intervals in the preset second time is obtained.

In the present embodiment, the gravity signal s of the conveyed material measured by the second load cell 31_B1i，

s_B2i，s_B3iAnd s_TiWhen s is_B1iAverage value, s, of the gravity signals measured by the at least two second load cells 31 collected by the signal processing unit 55 at equal time intervals within a preset first time_B2iAverage value, s, of the gravity signals measured by the at least two second load cells 31 acquired by the signal processing unit 55 at equal time intervals within the calibration period_B3iAverage value, s, of gravity signals measured by at least two second weighing sensors collected at equal time intervals within a preset second time_TiThe average value of the gravity signals measured by the at least two second weighing sensors collected at equal time intervals in the initial calibration period is obtained.

In this embodiment, the gravity signal s of the transmission material measured by the first weighing sensor_A1i，s_A2i，s_A3iIs the average value of at least two first weighing sensors and the gravity signal s of the conveyed material measured by a second weighing sensor_A1i，s_A2i，s_A3iRespectively, the average values of the at least two second load cells. When the signal processing unit 55 calculates each accumulated amount of the first carrier and each accumulated amount of the second carrier, the calculation is more accurate, so that the calculated calibration coefficients of the first carrier and the second carrier are more accurate.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. The utility model provides a calibration device of two loader electronic belt weighers which characterized in that includes: the device comprises a belt for conveying materials, a first loader, a second loader, a speed measuring sensor for measuring the conveying speed of the belt and a weighing instrument;

the signal processing unit is used for acquiring the s within a preset first time under the control of the central control element_A1iS of said s_B1iAnd v, calculating a second calibration coefficient of the first loader

the signal processing unit is also used for controlling the central control elementAccording to said k_B2And s is collected within a preset second time_A3i，s_B3iAnd v, calculating a third calibration coefficient of the first loader

To complete calibration of the first carrier.

2. The apparatus of claim 1, further comprising: standard chain sign indicating number, standard chain sign indicating number set up in on the belt of second loader top, with the belt contact and with belt support frame fixed connection, the weighing instrument still includes: the memory chip is electrically connected with the central control element;

the second interface is further used for collecting the gravity signal s of the standard chain code measured by the second weighing sensor at equal time intervals in an initial calibration period_Ti；

The signal processing unit is further used for calculating a standard loading accumulated quantity M-L x v x T of the second loader in an initial calibration period under the control of the central control element, wherein L represents the unit weight of the standard chain code, and T represents the initial calibration period;

the memory chip is used for storing the M and the s_Ti。

3. The apparatus of claim 2, wherein the first load cells are at least two in number and the second load cells are at least two in number.

4. The apparatus of claim 3, further comprising: the standard chain code is fixedly connected with the belt supporting frame through a rope.

5. A calibration method of a double-loader electronic belt scale is characterized by comprising the following steps:

the weighing instrument respectively collects gravity signals s of materials transmitted on a belt and measured by a first weighing sensor of a first loader at equal time intervals in preset first time through a first interface and a second interface_A1iSecond load cell of a second carrierGravity signal s of material_B1iReceiving a transmission speed signal v sent by a speed measuring sensor through a third interface, wherein i is a positive integer;

the weighing instrument collects the gravity signal s of the material transmitted on the belt measured by the first weighing sensor of the first loader at equal time intervals in the calibration period through the first interface and the second interface_A2iThe gravity signal s of the material transmitted on the belt measured by the second weighing sensor of the second loader_B2i；

To complete calibration of the first carrier.

6. The method according to claim 5, wherein storing the standard load cumulative amount M specifically comprises:

the weighing instrument collects the gravity signal s of the standard chain code measured by the second weighing sensor at equal time intervals in the initial calibration period through the second interface_Ti；

The signal processing unit of the weighing instrument calculates the standard loading cumulant M of the second loader in an initial calibration period, wherein L represents the unit weight of the standard chain code, and T represents the initial calibration period;

the weighing instrument stores the standard loading cumulant M and the standard loading cumulant s through a storage chip_Ti。

7. Method according to claim 6, characterized in that the first load cell measures the gravity signal s of the transported material_A1i，s_A2i，s_A3iRespectively, the average value of corresponding gravity signals measured by at least two first weighing sensors and the gravity signal s of the conveyed material measured by the second weighing sensor_B1i，s_B2i，s_B3iAnd gravity signal s of standard chain code_TiRespectively, the average value of the respective gravity signals measured by the at least two second load cells.