CN101592685A - A kind of method of measuring DC low current signal - Google Patents
A kind of method of measuring DC low current signal Download PDFInfo
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- CN101592685A CN101592685A CNA200910049339XA CN200910049339A CN101592685A CN 101592685 A CN101592685 A CN 101592685A CN A200910049339X A CNA200910049339X A CN A200910049339XA CN 200910049339 A CN200910049339 A CN 200910049339A CN 101592685 A CN101592685 A CN 101592685A
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- signal
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- current signal
- low current
- detection module
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Abstract
The present invention relates to a kind of method of measuring DC low current signal, this method may further comprise the steps: gather current signal by alloy magnet ring punching mode; The signal that collects is delivered to the multivibrator modulation; Detect wherein flip-flop by the direct current detection module; Convert standard analog signal output to by the signal condition output module at last.Compared with prior art, the present invention has realized the measurement of DC low current signal, has improved the accuracy of measuring greatly.
Description
Technical field
The present invention relates to the method that direct current signal is measured, relate in particular to a kind of method of measuring DC low current signal.
Background technology
The tradition dc current measurement adopts Hall element, is applicable to the measurement of big current signal, and the following signal measurement precision of 1A is relatively poor.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the defective that above-mentioned prior art exists, a kind of method of high-precision measuring DC low current signal to be provided.
Purpose of the present invention can be achieved through the following technical solutions: a kind of method of measuring DC low current signal is characterized in that this method may further comprise the steps:
(1) gathers current signal by alloy magnet ring punching mode;
(2) signal that collects is delivered to the multivibrator modulation;
(3) detect wherein flip-flop by the direct current detection module;
(4) convert standard analog signal output to by the signal condition output module at last.
Described multivibrator is connected with the direct current detection module.
Described direct current detection module is connected with the signal condition output module.
Compared with prior art, the present invention has realized the measurement of DC low current signal, has improved the accuracy of measuring greatly.
Description of drawings
Fig. 1 is the structural representation of a kind of measuring DC low current signal device of the present invention.
Embodiment
The present invention will be further described below in conjunction with specific embodiment.
As shown in Figure 1, the invention provides a kind of method of measuring DC low current signal, this method is by alloy magnet ring punching mode collection site DC current, not only realized the high-precision signal collection but also guaranteed the security of on-site signal.The signal that collects is by the modulation of multivibrator, detects wherein flip-flop via the direct current detection module, converts standard analog signal output to by the signal condition output module at last.Its main hardware that relates to comprises: multivibrator 1, direct current detection module 2, signal condition output module 3.Multivibrator 1, direct current detection module 2, signal condition output module 3 connect successively.The present invention has realized the high-acruracy survey of railway DC low current.
Claims (3)
1. the method for a measuring DC low current signal is characterized in that, this method may further comprise the steps:
(1) gathers current signal by alloy magnet ring punching mode;
(2) signal that collects is delivered to the multivibrator modulation;
(3) detect wherein flip-flop by the direct current detection module;
(4) convert standard analog signal output to by the signal condition output module at last.
2. the method for a kind of measuring DC low current signal according to claim 1 is characterized in that, described multivibrator is connected with the direct current detection module.
3. the method for a kind of measuring DC low current signal according to claim 1 is characterized in that, described direct current detection module is connected with the signal condition output module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910049339XA CN101592685A (en) | 2009-04-15 | 2009-04-15 | A kind of method of measuring DC low current signal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA200910049339XA CN101592685A (en) | 2009-04-15 | 2009-04-15 | A kind of method of measuring DC low current signal |
Publications (1)
| Publication Number | Publication Date |
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| CN101592685A true CN101592685A (en) | 2009-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA200910049339XA Pending CN101592685A (en) | 2009-04-15 | 2009-04-15 | A kind of method of measuring DC low current signal |
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| CN (1) | CN101592685A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854366A (en) * | 2012-09-12 | 2013-01-02 | 西安交通大学 | Low current measuring device and low current measuring method in direct-current power distribution and consumption system |
-
2009
- 2009-04-15 CN CNA200910049339XA patent/CN101592685A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102854366A (en) * | 2012-09-12 | 2013-01-02 | 西安交通大学 | Low current measuring device and low current measuring method in direct-current power distribution and consumption system |
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Open date: 20091202 |