Online calibration method for dynamic weighing of production line
A calibration method and dynamic weighing technology, which is applied in the direction of weighing equipment testing/calibration, etc., can solve problems such as measurement system instability, achieve the effect of improving weighing accuracy, weighing accuracy, and eliminating return errors
Inactive Publication Date: 2018-10-02
GUIZHOU UNIV
View PDF4 Cites 6 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The frequent disassembly and assembly of the dynamic weighing instrument during offline inspection brings instability to the measurement system again
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0014] Example 1: A production line dynamic weighing online calibration method, the method is: the dynamic weighing instrument performs online weighing during the continuous transmission of the product, and the directly measured signal data is expressed as a trapezoidal wave-like dynamic process signal . Moreover, due to the mechanical vibration generated by the on-site feeding and sorting device, as well as the influence of the power supply fluctuation and electrical noise of the measurement system, the process signal often contains interference signals of multiple frequencies. On the basis of the spectrum analysis of the measurement signal of the whole system, the present invention adopts the whole period moving average method for filtering processing, and its realization method is: set the data length L of the entire dynamic weighing signal, and take N samples each time as one Queue, perform arithmetic average operation; then take a new data and put it at the end of the queu...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses an online calibration method for dynamic weighing of a production line. The method comprises: collected dynamic data are filtered and arithmetic average operation is carried out by setting the overall dynamic weighing signal data length being L and viewing N sampling values selected each time as one queue; new data are taken and are placed at the queue end, data at the original queue head are abandoned, average filtering is carried out on the new queue to obtain a new filter result, effective value measurement is carried out on the filtered data, and sensitivity calibration calculation is carried out. According to the invention, with the average sample filter mode, interference signals with a plurality of frequencies carried by collected weight signals due to mechanical vibration caused by field feeding and a sorting device, power fluctuation of the measuring system, and electrical noise influence can be eliminated; and the effective weighing measurement voltageis calculated and the weighing precision is improved. Moreover, the return error that may exist in the sensor characteristics of the weight reciprocating changing process can be eliminated.
Description
Technical field [0001] The invention relates to a dynamic weighing online calibration method for a production line, and belongs to the technical field of weighing online calibration methods. Background technique [0002] With the rapid development of modern technology and the improvement of production quality requirements, the "manual inspection" method of "timed out and weighed separately" is gradually replaced by 100% online inspection. Because various factors on the pharmaceutical and food processing production lines have greatly affected the accuracy and stability of the small-range dynamic weighing instrument, it needs to be calibrated regularly. Frequent disassembly and assembly of the dynamic weighing instrument during the offline inspection process once again brought unstable factors to the measurement system. Summary of the invention [0003] The technical problem to be solved by the present invention is to provide an online calibration method for dynamic weighing of a p...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): G01G23/01
CPCG01G23/01
Inventor 葛俊杰何志琴
Owner GUIZHOU UNIV