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Method and device for determining data variance in real time

A technology for determining data and variance, applied in the field of real-time determination of data variance methods and devices, can solve problems such as inability to meet real-time measurement and control, and reduce processing efficiency of real-time measurement and control systems, and achieve the effect of ensuring real-time performance and improving measurement and calculation speed

Pending Publication Date: 2019-07-30
BEIJING INST OF RADIO MEASUREMENT
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Problems solved by technology

[0004] The real-time measurement and control system has high requirements on the time limit and real-time requirements. When the total amount of data in each group is larger, the amount of data processing will also increase, resulting in a decrease in the processing efficiency of the real-time measurement and control system. Unable to meet the needs of real-time measurement and control

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  • Method and device for determining data variance in real time
  • Method and device for determining data variance in real time
  • Method and device for determining data variance in real time

Examples

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Embodiment Construction

[0021] The principles and features of the present invention will be described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0022] The measurement and control system is a system of "measurement" and "control". According to the detection results of the controlled parameters of the controlled object, the controlled object is controlled according to the expected goals.

[0023] For real-time measurement and control systems, it can be applied to systems that focus on detection and control, and can also be applied to systems that focus on detection. For systems that focus on detection, generally, real-time measurement and control systems are used for detection Physical quantities with high performance requirements, such as displacement, liquid level, pressure, speed, torque, flow, temperature, voltage, current, power, resistance, capacitan...

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Abstract

The invention discloses a method and a device for determining data variance in real time, and relates to the field of real-time measurement and control. The method comprises the steps that a to-be-measured target is sampled, m pieces of obtained measurement data are grouped through a sliding window, the window width of the sliding window is n, and the step length of the sliding window is 1;averageEj-1, n and variance Dj-1 of a j-1th group of measurement data are obtained, according to the measurement data, an average value Ej-1, n, variance Dj-1,n and preset inter-class variance recursion formula, the variance Dj and n of the jth group of measurement data are calcualted. The method and the device for determining the data variance in real time provided by the invention are suitable for a real-time measurement and control system, the variance of the current group of measurement data can be quickly derived, and even if the data volume of each group of measurement data is very large, thecalculated amount cannot be increased, so that the measurement and calculation speed of the variance is increased, and the real-time requirement of the real-time measurement and control system is ensured.

Description

technical field [0001] The invention relates to the field of real-time measurement and control, in particular to a method and device for determining data variance in real time. Background technique [0002] In the real-time measurement and control system, after the measurement data is obtained, it is an important process to determine the variance of the measurement data in real time. [0003] The existing method of determining the variance is to calculate the variance through the definition formula. First, the average value of the group of data is calculated by taking the average method, and then the average value is substituted into the variance calculation formula to calculate the variance of the group of data. [0004] The real-time measurement and control system has high requirements on the time limit and real-time requirements. When the total amount of data in each group is larger, the amount of data processing will also increase, resulting in a decrease in the processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/17G06F17/18
CPCG06F17/18G06F17/17
Inventor 谭越魏民
Owner BEIJING INST OF RADIO MEASUREMENT
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