CN2879202Y - Electric power measuring meter - Google Patents
Electric power measuring meter Download PDFInfo
- Publication number
- CN2879202Y CN2879202Y CN 200620080696 CN200620080696U CN2879202Y CN 2879202 Y CN2879202 Y CN 2879202Y CN 200620080696 CN200620080696 CN 200620080696 CN 200620080696 U CN200620080696 U CN 200620080696U CN 2879202 Y CN2879202 Y CN 2879202Y
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- chip microcomputer
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Abstract
The utility model is an electricity measuring meter, equipped with a single plate machine. The measured current is directed to the input terminal of the single plate machine after undergoing synchronous rectification, operational amplification, AD conversion, whereas the measured voltage is directed to the input terminal of the single machine after undergoing voltage measurement, operational amplification, AD conversion; the 220V AC supply goes through frequency sampling circuit and is input to the input end of the single plate machine, and the time reset circuit is input to the input end of the single plate machine, the output terminal of the single plate machine connects with the indicating circuit via a drive circuit and an alarming circuit.
Description
Technical field
The utility model relates to a kind of power measure meters.
Background technology
Mostly existing power measure meters is to show a kind of electric weight, only has more single function.Test various electric weight in the use if desired, need to install a plurality of electric quantity test tables, inconvenient first, second increase expense.
Summary of the invention
The purpose of this utility model is that a kind of power measure meters will be provided, have multi-functional high brightness digital power instrument such as detect that electric current, voltage, frequency, phase shortage are reported to the police, memory service time, dynamic figure show, can finish the multiple functions such as measurement, time memory, phase shortage warning of electric weight.Can be widely used in the measurement and the analysis of generator, the multiple electrical parameter of electric power networks, be the supporting ideal product of the mechanical, electrical power network automatically of generation current.
The utility model is to constitute like this, it is provided with single-chip microcomputer, and tested electric current is connected to the input end of single-chip microcomputer, tested voltage are input to single-chip microcomputer through voltage detecting, computing amplification, AD conversion input end through synchronous rectification, computing amplification, AD conversion again after the current transformer conversion; The alternating current 220V power supply is through the input end of frequency sampling circuit input single-chip microcomputer, the input end that the time clear circuit is input to single-chip microcomputer, and the output terminal of single-chip microcomputer is connected to warning circuit through the output terminal that driving circuit is connected to display circuit, single-chip microcomputer.
Above-mentioned display circuit is a fluorescent display screen.
Above-mentioned current sampling circuit is a current transformer.
Than existing electric instrument, remarkable advantage of the present utility model is: have multiple power measurement function, thereby help the use of various occasions.
Below in conjunction with drawings and Examples the utility model is specifically described.
Description of drawings
Fig. 1 is a schematic block circuit diagram of the present utility model.
Embodiment
With reference to Fig. 1, it is provided with single-chip microcomputer the utility model, and tested electric current is connected to the input end of single-chip microcomputer, tested voltage are input to single-chip microcomputer through voltage detecting, computing amplification, AD conversion input end through synchronous rectification, computing amplification, AD conversion; The alternating current 220V power supply is imported tested electric current through the frequency sampling circuit and be connected to the input end of single-chip microcomputer, tested voltage are input to single-chip microcomputer through voltage detecting, computing amplification, AD conversion input end through synchronous rectification, computing amplification, AD conversion again after the current transformer conversion; The alternating current 220V power supply is through the input end of frequency sampling circuit input single-chip microcomputer, the input end that the time clear circuit is input to single-chip microcomputer, and the output terminal of single-chip microcomputer is connected to warning circuit through the output terminal that driving circuit is connected to display circuit, single-chip microcomputer.
The principle of work of the utility model embodiment is described below:
The tested electric current of single-phase or three-phase is after the current transformer conversion, and through synchronous rectification, computing amplification, AD conversion input single-chip microcomputer, single-chip microcomputer shows the current value of input again on fluorescent display screen again.Same reason, parameters of electric power such as tested voltage, frequency also show on video screen again.
Multi-functional high brightness digital power instrument such as the utlity model has and detect that electric current, voltage, frequency, phase shortage are reported to the police, memory service time, dynamic figure show can be finished the multiple functions such as measurement, time memory, phase shortage warning of electric weight.Being widely used in the measurement and the analysis of generator, the multiple electrical parameter of electric power networks, is the supporting ideal product of the mechanical, electrical power network automatically of generation current.Its parameter is as follows:
Input voltage: AC 0---500V
Input current: AC 0---500A (three-phase current every 5 seconds by automatically switch showing mutually, single-phasely do not switch)
Time memory: H 0---9999 hours
Frequency: 40---65HZ ± 1%
Impedance: greater than 200K
Error: ± 1%
Can be used for single-phase, three-phase and four-line
This product is a fluorescence digital color display screen: the upper left side is to show time memory, and intermediate symbols is electric power, genset, start indication, and the upper right side is that frequency shows.
The lower left is that phase current shows, shows by automaticallying switch mutually every 5 seconds, does not single-phasely switch.For being used for generator or electrical network 220V or 380V voltage, input shows that report to the police for phase shortage in the right side, the bottom right is single-phase or the three-phase indication in the middle of following.
Be that recording unit is brought into use the time time memory, and this time can't remove.
It is novel, and is economical and practical, reasonable in design, and its market outlook are considerable.
Claims (3)
1, a kind of power measure meters, it is characterized in that: be provided with single-chip microcomputer, tested electric current is connected to the input end of single-chip microcomputer, tested voltage are input to single-chip microcomputer through voltage detecting, computing amplification, AD conversion input end through synchronous rectification, computing amplification, AD conversion again after the current transformer conversion; The alternating current 220V power supply is through the input end of frequency sampling circuit input single-chip microcomputer, the input end that the time clear circuit is input to single-chip microcomputer, and the output terminal of single-chip microcomputer is connected to warning circuit through the output terminal that driving circuit is connected to display circuit, single-chip microcomputer.
2, a kind of power measure meters according to claim 1, it is characterized in that: described display circuit is a fluorescent display screen.
3, a kind of power measure meters according to claim 1, it is characterized in that: described current sampling circuit is a current transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080696 CN2879202Y (en) | 2006-01-24 | 2006-01-24 | Electric power measuring meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080696 CN2879202Y (en) | 2006-01-24 | 2006-01-24 | Electric power measuring meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2879202Y true CN2879202Y (en) | 2007-03-14 |
Family
ID=37861622
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080696 Expired - Fee Related CN2879202Y (en) | 2006-01-24 | 2006-01-24 | Electric power measuring meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2879202Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439614A (en) * | 2013-09-03 | 2013-12-11 | 苏州太谷电力股份有限公司 | Electric power monitoring device and monitoring method |
| CN103472285A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal current detector |
| WO2019119918A1 (en) * | 2017-12-19 | 2019-06-27 | 中车大连电力牵引研发中心有限公司 | Wireless monitoring system |
-
2006
- 2006-01-24 CN CN 200620080696 patent/CN2879202Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103439614A (en) * | 2013-09-03 | 2013-12-11 | 苏州太谷电力股份有限公司 | Electric power monitoring device and monitoring method |
| CN103472285A (en) * | 2013-09-30 | 2013-12-25 | 常熟市明阳电器安装工程有限公司 | Electrical appliance abnormal current detector |
| WO2019119918A1 (en) * | 2017-12-19 | 2019-06-27 | 中车大连电力牵引研发中心有限公司 | Wireless monitoring system |
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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 |
Granted publication date: 20070314 Termination date: 20150124 |
|
| EXPY | Termination of patent right or utility model |