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Automatic correction method, device and system of sampling signal

An automatic correction and sampling signal technology, which is applied in the general control system, control/regulation system, program control, etc., can solve the problem of low accuracy of sampling data, and achieve the effect of improving efficiency and high accuracy

Inactive Publication Date: 2017-05-24
BEIJING BORGWARD AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, the technical problem to be solved in the present invention is to overcome the defect that the accuracy of sampling data in the prior art is low

Method used

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  • Automatic correction method, device and system of sampling signal
  • Automatic correction method, device and system of sampling signal
  • Automatic correction method, device and system of sampling signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Combine below figure 1 and figure 2 Describe in detail a sampling signal automatic correction method provided by the embodiment of the present invention, which can be executed by the above-mentioned controller 13, such as figure 2 The method shown includes the following steps:

[0027] S1, control the sensor 11 to collect predetermined parameters of the measured object 10 and output a zero-point analog signal (the first analog signal) before the measured object 10 runs, and at this time, the controller 13, the sensor 11, and the analog-to-digital converter 12 are energized and run, and are controlled. The test object 10 is not powered on. At this time, due to the influence of factors such as electromagnetic interference, the zero-point analog signal (the first analog signal) is usually not 0.

[0028]S2, convert the zero-point analog signal (the first analog signal) into the zero-point digital signal (the first digital signal), the zero-point analog signal (the firs...

Embodiment 2

[0044] The following will combine figure 1 and image 3 A detailed description of a sampling signal automatic correction device provided by an embodiment of the present invention, the device includes:

[0045] The first sensing control unit 31 is configured to control the sensor 11 to collect predetermined parameters of the measured object before the measured object 10 runs and output a first analog signal;

[0046] An average offset value calculation unit 32, configured to calculate an average offset value by using a plurality of digital signals converted from the first analog signal;

[0047] The second sensing control unit 33 is configured to control the sensor 11 to collect predetermined parameters of the measured object and output a second analog signal after the measured object 10 runs;

[0048] an input value conversion unit 34, configured to convert the second analog signal into an input value;

[0049] A correction unit 35, configured to calculate an actual input v...

Embodiment 3

[0061] An embodiment of the present invention provides an automatic correction system for sampling signals, such as figure 1 The system shown includes:

[0062] An automatic correction system for sampling signals, characterized in that it includes:

[0063] The sensor 11 is used to collect the output signal of the measured object;

[0064] The controller 13 is configured to perform the following steps:

[0065] Controlling the sensor 11 to collect predetermined parameters of the measured object before the measured object 10 runs and outputting a first analog signal;

[0066] calculating an average offset value by using a plurality of digital signals converted from the first analog signal;

[0067] controlling the sensor to collect predetermined parameters of the measured object and output a second analog signal after the measured object 10 runs;

[0068] converting the second analog signal to an input value;

[0069] An actual input value is calculated using the input val...

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Abstract

The invention provides an automatic correction method, device and system of a sampling signal. The method comprises that a control sensor collects a predetermined parameter of a measured object before operation of the measured object and outputs a first analog signal; the first analog signal is converted to digital signals, and an average deviant is calculated by utilizing the digital signals; the control sensor collects the predetermined parameter of the measured object after operation of the measured object and outputs a second analog signal; the second analog signal is converted into an input value; and a practical input value is calculated via the input value and the average deviant.

Description

technical field [0001] The invention relates to the field of data acquisition of controllers, in particular to a sampling signal automatic correction method, device and system. Background technique [0002] At present, in many control systems such as the vehicle controller and battery management system of electric vehicles, it is required to accurately measure and sample signals, such as the three-phase current signal of the motor, the voltage signal of the battery pack, etc. If the sampling signal error is large, it will affect the working efficiency of the control system. [0003] The controller needs to collect the output signals of the measured object through various sensors. Since the environment of the measured object is relatively complex, for example, its devices or hardware circuits are in the same environment as the measured object, these devices and circuits will Electromagnetic interference is generated on the measured object, especially for the control system t...

Claims

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Application Information

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IPC IPC(8): G05B19/042
CPCG05B19/0425G05B2219/2612
Inventor 熊丽满
Owner BEIJING BORGWARD AUTOMOBILE CO LTD
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