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Hopper scale on-line automatic calibration method based on small number of weights

A technology of automatic calibration and hopper scales, which is applied in the direction of weighing equipment testing/calibration, etc., can solve the problems of uncertain accuracy of full scale or common points, physical injury of personnel carrying weights, and delay in time, so as to avoid personal injury , the results are intuitive and reliable, and the effect of using small effects

Active Publication Date: 2017-06-30
SD STEEL RIZHAO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Problems existing in the calibration of traditional hopper scales with a large range: Problems with manual calibration of traditional hopper scales with a large range: not timely; Or the accuracy of commonly used points is uncertain; the calibration and use process cannot be taken into account; there is a risk of personal injury to the person who manually carries the weight; the calibration cost is high
[0003] Disadvantages of the existing artificial weight calibration technology for hopper scales with a large range: not timely; Cannot take into account; there is a risk of personal injury for those who manually carry the weight; the calibration cost is high

Method used

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  • Hopper scale on-line automatic calibration method based on small number of weights
  • Hopper scale on-line automatic calibration method based on small number of weights

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] according to figure 1 , figure 2 An online automatic calibration method for a hopper based on a small amount of weights is shown, including the following steps:

[0025] Step 1: Test the repeatability with the actual object of 50% of the full scale and the smallest weight such as F which is 0.1 times of the division value e. The specific steps are as follows:

[0026] (1) Put the weighing object greater than 50% of the full scale into the hopper, the scale displays X, and add 0.1e small weights on the hopper one by one until X+e is displayed, at this time the cumulative value of the additional small weights is △ 1. Then release the weighing object and take down the △1 small weight, and return to zero;

[0027] (2) Put the object to be weighed into the hopper again, display X, add small weights of 0.1e on the hopper one by one, until X+e is displayed, at this time the cumulative value of the additional small weights is △2, and return to zero;

[0028] (3) Repeat the ...

Embodiment 2

[0038] according to figure 2 An online automatic calibration method for hoppers based on a small amount of weights is shown. When the hopper scale does not have an automatic control system for feeding fixed value or when there is no time to feed, add a special remote control hopper scale force device, such as above the sensor A gantry is added above the load-bearing ears of the hopper, and a synchronous electric jack is added between the gantry beam and the load-bearing ears as a weight substitute. The two feet of the gantry and the sensor feet are fixed on a platform to achieve calibration Invention purposes other than using the synchronization function.

[0039] The on-line automatic calibration described in the present invention refers to the use of the hopper scale to be weighed or the electric jack as a weight substitute, and the calibration process is carried out simultaneously with the automatic control of the fixed value of normal feeding. A small amount of weight me...

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Abstract

The invention relates to a hopper on-line automatic calibration method based on a small number of weights. The method comprises the steps that 1 the repeatability is tested; 2 the number of times of weight loading and the number of calibration weights are calculated according to the repeatability test result; 3 the number of times of weight loading and the number of calibration weights are set into an online automatic calibration weighing program; 4 according to the number of calibration weights, weights and a lift electric screw push rod thereof are arranged around a hopper scale; 5 a hopper scale on-line automatic calibration system based on a small number of weights is formed; 6 the blanking fixed value automatic control system of a weighed object is converted into an online automatic calibration mode; and 7 if a calibration result is normal, automatically restoring to the fixed value automatic blanking mode is carried out, otherwise repair is prompted to notify a relevant position to change a spare bin. Automatic fast calibration of all hopper scales can be timely realized at the same time. Full range reliable calibration of a small amount of weights is realized. Calibration and use processes are simultaneous and automatic. A calibration process is free of manual participation. The calibration cost is low.

Description

technical field [0001] The invention relates to the field of weighing equipment, in particular to an online automatic calibration method for a hopper scale based on a small amount of weights. Background technique [0002] Problems existing in the calibration of traditional hopper scales with a large range: Problems with manual calibration of traditional hopper scales with a large range: not timely; Or the accuracy of the commonly used points is uncertain; the calibration and the use process cannot be taken into account; there is a risk of personal injury to the person who manually carries the weight; the calibration cost is high. The most similar technical solution to the present invention: calibration technicians manually operate multiple electric screws or electro-hydraulic push rods to add and remove weights, and only calibrate a small part of the full scale equal to the weights. [0003] Disadvantages of the existing artificial weight calibration technology for hopper s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01G23/01
Inventor 王如旭范鹍牛春波
Owner SD STEEL RIZHAO CO LTD
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