CN205301426U - Intelligent monitoring instrument for mine stray current - Google Patents
Intelligent monitoring instrument for mine stray current Download PDFInfo
- Publication number
- CN205301426U CN205301426U CN201520967836.9U CN201520967836U CN205301426U CN 205301426 U CN205301426 U CN 205301426U CN 201520967836 U CN201520967836 U CN 201520967836U CN 205301426 U CN205301426 U CN 205301426U
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- China
- Prior art keywords
- chip microcomputer
- electrically connected
- electric connection
- current
- intelligent monitoring
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- Expired - Fee Related
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Abstract
The utility model discloses an intelligent monitoring instrument for mine stray current, memory and singlechip electric connection, LCD display screen and singlechip electric connection, three phase voltage and three phase current are all through signal acquisition and treatment circuit and singlechip electric connection, singlechip electric connection has the alarm, singlechip electric connection has wireless communication module, the wireless electric connection of wireless communication module has remote monitoring terminal, singlechip still electric connection has control button and crosses the zero comparator. The utility model discloses a voltage, current signal all adopt current clamp to obtain, the wiring is convenient, rapidly, safe, clear, factor of safety improves greatly, in the middle of the data that detect out the computer software through the built -in directly stored the memory into, remote monitoring terminal through the wireless communication module connection also can monitor the electric current with recording apparatus.
Description
Technical field
The utility model relates to current monitoring technical field, is specially a kind of Intelligent monitoring instrument for mine stray current.
Background technology
All kinds of electric-power metering checkout gears must carry out the first inspection in laboratory according to corresponding detection regulation before installing and using, but in actual field application, only metering device 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, the Voltage Transformer Secondary Circuit Voltage Drop of metering method are excessive, wiring errors, can cause error in dipping excessive, electric quantity loss is serious. The pulse signal of inputting instrument during in the past due to calibration is to obtain by pressing manually switch, can not ensure that electric current output or input that the degree of accuracy of calibration result and calibration measurement stability and electric current and voltage signal are directly connected to calibrated meter by terminal plate or wiring obtain, 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.
Utility model content
The purpose of this utility model is to provide a kind of Intelligent monitoring instrument for mine stray current, to solve the problem proposing in above-mentioned background technology.
For achieving the above object, the utility model provides following solution: a kind of Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, memory, LCD display, three-phase voltage and three-phase current, described power supply and single-chip microcomputer are electrically connected, described memory 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 by signals collecting and treatment circuit and single-chip microcomputer electric connection, 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 button 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 beneficial effects of the utility model are: this Intelligent monitoring instrument for mine stray current, the module that its three-phase current and three-phase voltage gather or process data-signal can be carried out testing to signal, also can deal with the work accordingly to testing result, use the transformer of electric current and voltage by high-speed modular converter, finally the analog signal of three-phase current and three-phase voltage output is converted to for data 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 important data in service, and can realize corresponding moment record, for the system with electric weight monitoring function, can also make point-device calendar, be significant, to the detection of frequency, conventionally use zero passage comparison circuit, the voltage acquisition signal being obtained by upper joint, pass through zero-crossing comparator, voltage signal is shaped as to forward square-wave signal, can calculate the frequency of following the tracks of power system, this square-wave signal is simultaneously as the external interrupt signal of sampling, triggering sampling interrupts, and by the sample frequency calculating sampling cycle, 128 points of the each power frequency period sampling of the utility model, clock circuit is according to the sampling period of calculating, complete the periodic sampling that waits of voltage and current signal, frequency-tracking can effectively be eliminated the spectral aliasing error of Fast Fourier Transform (FFT) (FFT) algorithm, thereby can accurately calculate first-harmonic and each harmonic component, with traditional Intelligent monitoring instrument for mine stray current, voltage of the present utility model, current signal all adopt current clamp to obtain, easy-to-connect, rapid, safety, clear, safety coefficient improves greatly, the data that detect directly store in the middle of internal memory by included computer software, and the remote monitoring terminal connecting by wireless communication module also can be monitored the electric current with recording apparatus.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiment. Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtaining under creative work prerequisite, all belong to the scope of the utility model protection.
Refer to Fig. 1, the utility model provides a kind of technical scheme: a kind of Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, memory, LCD display, three-phase voltage and three-phase current, described power supply and single-chip microcomputer are electrically connected, described memory 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 by signals collecting and treatment circuit and single-chip microcomputer electric connection, the module that its three-phase current and three-phase voltage gather or process data-signal can be carried out testing to signal, also can deal with the work accordingly to testing result, use the transformer of electric current and voltage by high-speed modular converter, finally the analog signal of three-phase current and three-phase voltage output is converted to for data 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 button and zero-crossing comparator, this square-wave signal is simultaneously as the external interrupt signal of sampling, triggering sampling interrupts, and by the sample frequency calculating sampling cycle, 128 points of the each power frequency period sampling of the utility model, clock circuit is according to the sampling period of calculating, complete the periodic sampling that waits of voltage and current signal, frequency-tracking can effectively be eliminated the spectral aliasing error of Fast Fourier Transform (FFT) (FFT) algorithm, thereby can accurately 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 important data in service, and can realize corresponding moment record, for the system with electric weight monitoring function, can also make point-device calendar, be significant, with traditional Intelligent monitoring instrument for mine stray current, voltage of the present utility model, current signal all adopt current clamp to obtain, easy-to-connect, rapid, safety, clear, safety coefficient improves greatly, the data that detect directly store in the middle of internal memory by included computer software, and the remote monitoring terminal connecting by wireless communication module also can be monitored the electric current with recording apparatus.
Although illustrated and described embodiment of the present utility model, for the ordinary skill in the art, be appreciated that in the situation that not departing from principle of the present utility model and spirit and can carry out multiple variation, amendment, replacement and modification to these embodiment, scope of the present utility model is limited by claims and equivalent thereof.
Claims (5)
1. an Intelligent monitoring instrument for mine stray current, comprise power supply, single-chip microcomputer, memory, 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 memory 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 by signals collecting and treatment circuit and single-chip microcomputer electric connection, 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 button 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 |
|---|---|---|---|
| CN201520967836.9U CN205301426U (en) | 2015-11-30 | 2015-11-30 | Intelligent monitoring instrument for mine stray current |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520967836.9U CN205301426U (en) | 2015-11-30 | 2015-11-30 | Intelligent monitoring instrument for mine stray current |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205301426U true CN205301426U (en) | 2016-06-08 |
Family
ID=56462818
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520967836.9U Expired - Fee Related CN205301426U (en) | 2015-11-30 | 2015-11-30 | Intelligent monitoring instrument for mine stray current |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205301426U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403762A (en) * | 2015-11-30 | 2016-03-16 | 重庆金鑫智慧科技有限公司 | Intelligent monitor for mine stray current |
-
2015
- 2015-11-30 CN CN201520967836.9U patent/CN205301426U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105403762A (en) * | 2015-11-30 | 2016-03-16 | 重庆金鑫智慧科技有限公司 | Intelligent monitor for mine stray current |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160608 Termination date: 20181130 |