Correction method for balance point error of non-scale static track

Abstract

The invention relates to a weighing table-free static rail balance point error correcting method. The method comprises the following steps of finding characteristic points of a load vehicle during weighing in a weighing effective area; acquiring small combination sum value of AD code output by each group of sensor of the load vehicle at each characteristic point and at a weighing effective area center point, and calculating the total sum value of the AD code output by all groups of sensors of the load vehicle at the center point; respectively substituting the values into a correction calculation formula to calculate a correction factor; when the load vehicle weighs at any position in the weighing effective area on the rail, obtaining the total sum correction value of the AD code output by all groups of sensors through the correction calculation formula. The rail balance weighing value is approximate to an ideal weighing straight line by the correction factor and the correction formula, so that the rail balance weighing precision is improved; a potentiometer is not required to be connected in series, and the sensors are not required to be manually debugged one by one and are automatically debugged by software, so that adjustment is convenient to perform, time and labor are saved, and the intelligence degree is high.

Description

technical field [0001] The invention relates to a static rail scale without a scale, in particular to a method for correcting the force point error of a static rail without a scale to improve the weighing accuracy of the static rail scale without a scale. Background technique [0002] Track scales have a long history of development, but in the past people put more energy on the research of dynamic track scales, and lack of in-depth research on static track scales; however, static track scales are also a very important branch of track scales, especially in metallurgy, A large number of static track scales are used in the internal settlement of chemical enterprises. [0003] Static track scales can be divided into two categories in terms of structure, one is platform-type track scales, and the other is platform-less track scales. The scale-type static rail scale has high weighing accuracy, but the construction is complicated and the cost is high; the non-scale static rail sca...

AI Technical Summary

Problems solved by technology

[0006] The invention mainly solves the technical problem that the load vehicle parks in the weighing area of ​​the static rail scale, and the weight deviation of different weighing points is large, and the error exceeds the maximum allowable error range. The required measurement accuracy, and the technical problem of time-consuming and laborious adjustment; provides a method for correcting the error of the scale-free static rail balance point, which does not require a potentiometer to be connected in series with the sensor excitation voltage of the static rail scale, and does not require manual debugging by the staff. By introducing the correction coefficient, the software automatically adjusts the weighing value when the load vehicle is parked at different parking positions in the static rail scale weighing area, which is convenient to adjust, saves time and effort, greatly reduces the weighing error, and ensures the weighing of each weighing point The error is less than the maximum allowable error, improving the weighing accuracy of the track scale

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