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Electronic belt scale linear compensation method

An electronic belt scale and linear compensation technology, applied to measuring devices, instruments, weighing, etc., can solve the problems of poor weighing accuracy, inconvenience, and time-consuming calibration, and achieve the effect of accurate measurement values

Inactive Publication Date: 2014-07-02
SAIMO ELECTRIC
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Problems solved by technology

At present, the current technology to solve this problem adopts multi-point material calibration of 80%, 60%, and 40% of the maximum material volume conveyed between the maximum material volume and the minimum material volume. Due to the time-consuming multi-point material calibration on site , inconvenient, high cost and difficult to carry out, resulting in poor weighing accuracy during operation when the amount of conveyed material changes

Method used

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  • Electronic belt scale linear compensation method

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Effect test

Embodiment example

[0020] Test conditions: belt width: 1000mm; belt speed: 2.0 m / s;

[0021] Maximum material flow: 1000t / h

[0022] Step 1: Under the operating condition of material flow rate of 1000t / h, the weight difference rate of the material obtained by the weighing carrier is as follows:

[0023] Rear weighing carrier 1: The force value of the carrier is a kg

[0024] Front weighing carrier 2: The force value of the carrier is b kg

[0025] The difference c = the force of the rear carrier 1 - the force of the front carrier 2, that is: a-b=c kg

[0026] The maximum material flow difference rate d=c / a, at this time, the span calibration number is A.

[0027] Step 2: Under the condition of no-load operation, the weighing carrier measures the difference rate of the belt weight under the empty belt:

[0028] Rear weighing carrier 1: The load on the carrier is e kg

[0029] Front weighing carrier 2: The load on the carrier is f kg

[0030] The difference g = the fo...

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Abstract

The invention discloses an electronic belt scale linear compensation method. Two sets of independent weighing loaders arranged on a belt conveyor are utilized for measuring the stress difference value rates under the maximum conveying material quantity, and measuring the linear error of the stress difference value rates of the loaders under the no-load condition, the measured range linear error of an electronic belt scale from the no load to the full load is corrected, the belt scale can eliminate the systematic linear error caused by the conveyor belt in the whole weighing range, and therefore the accurate metering numerical value can be obtained. The method is simple, convenient to implement, low in cost and easy to achieve in engineering.

Description

technical field [0001] The invention relates to a linear compensation method for an electronic belt scale, belonging to the technical field of dynamic weighing. Background technique [0002] The weighing working principle of the belt scale is that the material to be weighed passes through the belt on the belt conveyor and then weighed again. The tension of the belt and the softness of the belt directly affect the weighing result. In particular, the belt tension and the hardness of the belt also change when the amount of conveying material is large or the amount of material being conveyed is small. These factors have an impact on the weighing accuracy when the amount of conveyed material changes. At present, the current technology to solve this problem adopts the multi-point material calibration of 80%, 60% and 40% of the maximum conveyed material amount between the maximum conveyed material amount and the minimum conveyed material amount. Due to the time-consuming on-site mu...

Claims

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Application Information

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IPC IPC(8): G01G11/00G01G23/01
Inventor 厉达何福胜张兴国
Owner SAIMO ELECTRIC
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