CN105403762A - Intelligent monitor for mine stray current - Google Patents
Intelligent monitor for mine stray current Download PDFInfo
- Publication number
- CN105403762A CN105403762A CN201510850393.XA CN201510850393A CN105403762A CN 105403762 A CN105403762 A CN 105403762A CN 201510850393 A CN201510850393 A CN 201510850393A CN 105403762 A CN105403762 A CN 105403762A
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- chip microcomputer
- electrically connected
- current
- electrically
- communication module
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Abstract
Disclosed in the invention is an intelligent monitor for a mine stray current. A storage device is connected with a single-chip microcomputer electrically; and an LCD display screen is connected with the single-chip microcomputer electrically. A three-phase voltage and a three-phase current are connected with the single-chip microcomputer electrically by a signal collection and processing circuit. The single-chip microcomputer is connected with an alarm device and a wireless communication module electrically; and the wireless communication module is connected with a remote monitoring terminal electrically. Besides, the single-chip microcomputer is also connected a control button and a zero-crossing comparator electrically. According to the invention, a voltage signal and a current signal are obtained by a current clamp; wiring becomes convenient, rapid, safe and clear; and the safety factor is substantially improved. Detected date are stored into an internal memory directly by internally attached computer software; and the remote monitoring terminal connected by the wireless communication module also can monitor and record an instrument current.
Description
Technical field
The present invention relates to current monitoring technique field, be specially a kind of Intelligent monitoring instrument for mine stray current.
Background technology
All kinds of electric-power metering pick-up unit must carry out laboratory head inspection according to the corresponding regulation that detects before installing and using, but in actual field application, only measuring apparatus itself accurately might not finally ensure the accurate of electric-power metering.In actual moving process, due to reasons such as unreasonable, the change of the method for operation of metering method, Voltage Transformer Secondary Circuit Voltage Drop are excessive, wiring errors, error in dipping can be caused excessive, and electric quantity loss is serious.In the past because the pulse signal of input instrument during calibration obtains by pressing switch manually, the accuracy of calibration result and calibration measurement stability can not be ensured and the electric current that electric current and voltage signal are directly connected to calibrated meter by terminal block or wiring exports or input end obtains, make wiring loaded down with trivial details, and easily because wiring error causes accident, cause calibration personnel personal injury and economic loss to detect data and also need artificial pointwise record, labor intensive resource.
Summary of the invention
The object of the present invention is to provide a kind of Intelligent monitoring instrument for mine stray current, to solve the problem proposed in above-mentioned background technology.
For achieving the above object, the invention provides following solution: a kind of Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, storer, LCD display, three-phase voltage and three-phase current, described power supply and single-chip microcomputer are electrically connected, described storer and single-chip microcomputer are electrically connected, described LCD display and single-chip microcomputer are electrically connected, described three-phase voltage and three-phase current are all electrically connected by Signal acquiring and processing circuit and single-chip microcomputer, described single-chip microcomputer is electrically connected with alarm, described single-chip microcomputer is electrically connected with wireless communication module, described wireless communication module is wireless is electrically connected with remote monitoring terminal, described single-chip microcomputer is also electrically connected with control knob and zero-crossing comparator.
Preferably, described single-chip microcomputer is also electrically connected with printer.
Preferably, described single-chip microcomputer is also electrically connected with clock circuit.
Preferably, described single-chip microcomputer is also electrically connected with reset circuit.
Preferably, described single-chip microcomputer is also electrically connected with crystal oscillating circuit.
Compared with prior art, the invention has the beneficial effects as follows: this Intelligent monitoring instrument for mine stray current, the module that its three-phase current and three-phase voltage gather data-signal or process can carry out testing to signal, also can deal with the work accordingly to testing result, use the mutual inductor of electric current and voltage by high-speed modular converter, finally the simulating signal that three-phase current and three-phase voltage export is converted in order to digital signal, its crystal circuit and clock circuit can improve the stable of single-chip microcomputer, crystal oscillating circuit can provide basic clock signal for system, its clock circuit not only can register system run in important data, and corresponding moment record can be realized, for the system with electricity monitoring function, point-device calendar can also be made, be significant, to the detection of frequency, usual use Zero-cross comparator circuit, the voltage acquisition signal obtained by upper joint, pass through zero-crossing comparator, voltage signal is shaped as forward square-wave signal, the frequency of following the tracks of electric system can be calculated, this square-wave signal is simultaneously as the external interrupt signal of sampling, trigger Sampling interrupt, and by the sample frequency calculating sampling cycle, the each power frequency period of the present invention is sampled 128 points, clock circuit is according to the sampling period calculated, what complete voltage and current signal waits periodic sampling, frequency-tracking effectively can eliminate the spectral aliasing error of Fast Fourier Transform (FFT) (FFT) algorithm, thus accurately can calculate first-harmonic and each harmonic component, with traditional Intelligent monitoring instrument for mine stray current, voltage of the present invention, current signal all adopt current clamp to obtain, easy-to-connect, rapidly, safety, to understand, safety coefficient improves greatly, the data detected directly are stored in the middle of internal memory by included computer software, and the remote monitoring terminal connected by wireless communication module also can monitor the electric current with recorder.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Refer to Fig. 1, the invention provides a kind of technical scheme: a kind of Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, storer, LCD display, three-phase voltage and three-phase current, described power supply and single-chip microcomputer are electrically connected, described storer and single-chip microcomputer are electrically connected, described LCD display and single-chip microcomputer are electrically connected, described three-phase voltage and three-phase current are all electrically connected by Signal acquiring and processing circuit and single-chip microcomputer, the module that its three-phase current and three-phase voltage gather data-signal or process can carry out testing to signal, also can deal with the work accordingly to testing result, use the mutual inductor of electric current and voltage by high-speed modular converter, finally the simulating signal that three-phase current and three-phase voltage export is converted in order to digital signal, described single-chip microcomputer is electrically connected with alarm, described single-chip microcomputer is electrically connected with wireless communication module, described wireless communication module is wireless is electrically connected with remote monitoring terminal, described single-chip microcomputer is also electrically connected with control knob and zero-crossing comparator, this square-wave signal is simultaneously as the external interrupt signal of sampling, trigger Sampling interrupt, and by the sample frequency calculating sampling cycle, the each power frequency period of the present invention is sampled 128 points, clock circuit is according to the sampling period calculated, what complete voltage and current signal waits periodic sampling, frequency-tracking effectively can eliminate the spectral aliasing error of Fast Fourier Transform (FFT) (FFT) algorithm, thus accurately can calculate first-harmonic and each harmonic component, described single-chip microcomputer is also electrically connected with printer, described single-chip microcomputer is also electrically connected with clock circuit, described single-chip microcomputer is also electrically connected with reset circuit, described single-chip microcomputer is also electrically connected with crystal oscillating circuit, its crystal circuit and clock circuit can improve the stable of single-chip microcomputer, crystal oscillating circuit can provide basic clock signal for system, its clock circuit not only can register system run in important data, and corresponding moment record can be realized, for the system with electricity monitoring function, point-device calendar can also be made, be significant, with traditional Intelligent monitoring instrument for mine stray current, voltage of the present invention, current signal all adopt current clamp to obtain, easy-to-connect, rapidly, safety, to understand, safety coefficient improves greatly, the data detected directly are stored in the middle of internal memory by included computer software, and the remote monitoring terminal connected by wireless communication module also can monitor the electric current with recorder.
Although illustrate and describe embodiments of the invention, for the ordinary skill in the art, be appreciated that and can carry out multiple change, amendment, replacement and modification to these embodiments without departing from the principles and spirit of the present invention, scope of the present invention is by claims and equivalents thereof.
Claims (5)
1. an Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, storer, LCD display, three-phase voltage and three-phase current, described power supply and single-chip microcomputer are electrically connected, it is characterized in that: described storer and single-chip microcomputer are electrically connected, described LCD display and single-chip microcomputer are electrically connected, described three-phase voltage and three-phase current are all electrically connected by Signal acquiring and processing circuit and single-chip microcomputer, described single-chip microcomputer is electrically connected with alarm, described single-chip microcomputer is electrically connected with wireless communication module, described wireless communication module is wireless is electrically connected with remote monitoring terminal, described single-chip microcomputer is also electrically connected with control knob and zero-crossing comparator.
2. a kind of Intelligent monitoring instrument for mine stray current according to claim 1, is characterized in that: described single-chip microcomputer is also electrically connected with printer.
3. a kind of Intelligent monitoring instrument for mine stray current according to claim 1, is characterized in that: described single-chip microcomputer is also electrically connected with clock circuit.
4. a kind of Intelligent monitoring instrument for mine stray current according to claim 1, is characterized in that: described single-chip microcomputer is also electrically connected with reset circuit.
5. a kind of Intelligent monitoring instrument for mine stray current according to claim 1, is characterized in that: described single-chip microcomputer is also electrically connected with crystal oscillating circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850393.XA CN105403762A (en) | 2015-11-30 | 2015-11-30 | Intelligent monitor for mine stray current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510850393.XA CN105403762A (en) | 2015-11-30 | 2015-11-30 | Intelligent monitor for mine stray current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105403762A true CN105403762A (en) | 2016-03-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510850393.XA Pending CN105403762A (en) | 2015-11-30 | 2015-11-30 | Intelligent monitor for mine stray current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105403762A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018552A (en) * | 1998-06-30 | 2000-01-18 | Mitsubishi Heavy Ind Ltd | Plasma arc type melting furnace |
| CN201162544Y (en) * | 2008-03-01 | 2008-12-10 | 吴元峰 | Intelligent monitoring instrument for mine stray current |
| JP2009244123A (en) * | 2008-03-31 | 2009-10-22 | Jfe Engineering Corp | Method and apparatus for monitoring damage on coating of underground pipe |
| CN202870150U (en) * | 2012-10-23 | 2013-04-10 | 徐州矿一自动化科技有限公司 | Stray current tester |
| CN205301426U (en) * | 2015-11-30 | 2016-06-08 | 重庆金鑫智慧科技有限公司 | Intelligent monitoring instrument for mine stray current |
-
2015
- 2015-11-30 CN CN201510850393.XA patent/CN105403762A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000018552A (en) * | 1998-06-30 | 2000-01-18 | Mitsubishi Heavy Ind Ltd | Plasma arc type melting furnace |
| CN201162544Y (en) * | 2008-03-01 | 2008-12-10 | 吴元峰 | Intelligent monitoring instrument for mine stray current |
| JP2009244123A (en) * | 2008-03-31 | 2009-10-22 | Jfe Engineering Corp | Method and apparatus for monitoring damage on coating of underground pipe |
| CN202870150U (en) * | 2012-10-23 | 2013-04-10 | 徐州矿一自动化科技有限公司 | Stray current tester |
| CN205301426U (en) * | 2015-11-30 | 2016-06-08 | 重庆金鑫智慧科技有限公司 | Intelligent monitoring instrument for mine stray current |
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Application publication date: 20160316 |
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| RJ01 | Rejection of invention patent application after publication |