CN201327505Y - Three-phase electrical parameter signal measuring and processing system - Google Patents
Three-phase electrical parameter signal measuring and processing system Download PDFInfo
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- CN201327505Y CN201327505Y CNU2008202311039U CN200820231103U CN201327505Y CN 201327505 Y CN201327505 Y CN 201327505Y CN U2008202311039 U CNU2008202311039 U CN U2008202311039U CN 200820231103 U CN200820231103 U CN 200820231103U CN 201327505 Y CN201327505 Y CN 201327505Y
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Abstract
The utility model discloses a three-phase electrical parameter signal measuring and processing system. An input terminal is connected with a system power supply circuit. The system power supply circuit is connected with the input ends of a three-phase voltage sample circuit, a three-phase voltage signal filter circuit, a three-phase voltage signal true value arithmetic circuit, a three-phase voltage signal true value isolating output circuit, a three-phase current signal sample circuit, a three-phase current signal filter circuit, a three-phase current signal true value arithmetic circuit and a three-phase current signal true value isolating output circuit by leads. The three-phase voltage signal filter circuit is connected with a frequency signal reshaping output circuit by a lead. The three-phase voltage signal true value isolating output circuit, the three-phase current signal true value isolating output circuit and the frequency signal reshaping output circuit are connected with an output terminal by leads. Compared with the prior art, the three-phase electrical parameter signal measuring and processing system has the characteristics of simple structure, high arithmetic speed and high output precision; original conditioning signals can be input by a data collecting card, so as to provide basis for the digitization of electric parameters.
Description
Technical field
The utility model belongs to the three phase electrical parameters disposal system, particularly a kind of three phase electrical parameters signal measurement and process system.
Background technology
In general uniformity signal treatment technology, the effective value of test cross stream signal in order to try to achieve, most of technician adopt the method for rectifying and wave-filtering, institute's test cross stream signal has been changed into the pulsating direct current signal, after this direct current signal carried out analog to digital conversion, calculate the effective value of original input signal through operational formula.Compare with the present invention, this method and technology link is too much, and the output waveform ripple is bigger, and the operation result error is bigger, can't satisfy the technology occasion that degree of accuracy is had relatively high expectations.The present invention has overcome the shortcoming of similar technology in the past fully, and circuit design is simple, and the output waveform real-time is good, the output accuracy height.It is the electric signal parameter disposal system of the good three-phase of a kind of performance.Simple in structure, degree of accuracy is high
Summary of the invention
The purpose of this utility model provides a kind of simple in structure, computing speed, output accuracy height, and data collecting card is imported original conditioned signal, and a kind of three-phase electric parameter signal measurement and process system of foundation is provided for the electric parameter digitizing.
To achieve these goals, solution of the present invention is: a kind of three phase electrical parameters signal measurement and process system, by input terminal, lead-out terminal, system power supply circuit, three-phase voltage sample circuit, three-phase voltage signal filtering circuit, three-phase voltage signal true value computing circuit, three-phase voltage signal true value spacing output circuit, the three-phase current signal sample circuit, the three-phase current signal filtering circuit, three-phase current signal true value computing circuit, three-phase current signal true value spacing output circuit, frequency signal shaping output circuit is formed.Described input terminal is connected with the system power supply circuit by lead, described system power supply circuit is by lead and three-phase voltage sample circuit, three-phase voltage signal filtering circuit, three-phase voltage signal true value computing circuit, three-phase voltage signal true value spacing output circuit, three-phase current signal sample circuit, and the input end of three-phase current signal filtering circuit, three-phase current signal true value computing circuit, three-phase current signal true value spacing output circuit connects.Described three-phase voltage signal filtering circuit is connected with frequency signal shaping output circuit by lead.Described three-phase voltage signal true value spacing output circuit, three-phase current signal true value spacing output circuit, frequency signal shaping output circuit are connected with lead-out terminal by lead.
The present invention compared with prior art, have simple in structure, fast operation, output accuracy height, data collecting card is imported original conditioned signal, can provide foundation for the electric parameter digitizing.Because what system adopted is real-time mould value computing circuit, so ripple is little on output waveform, pulse free is the accurate foundation of digital AD system input signal.Native system can be under-45 ℃～+ 85 ℃ environment operate as normal, can satisfy the use in industrial environment and the military project environment fully.Native system can also be applied to the electric power virtual instrument system, electric power wireless network kilowatt meter reading-out system, the AD system of also suitable military project, civilian digital displaying meter.The present invention takes to optimize the topological structure wiring on circuit board wiring, make the anti-electromagnetic interference capability of circuit in real work strengthen.
Description of drawings
Fig. 1 is the structural representation of the utility model embodiment.
Embodiment
As shown in Figure 1, a kind of three phase electrical parameters signal measurement and process system, by input terminal 1, system power supply circuit 2, three-phase voltage sample circuit 3, three-phase voltage signal filtering circuit 4, three-phase voltage signal true value computing circuit 5, three-phase voltage signal true value spacing output circuit 6, three-phase current signal sample circuit 7, three-phase current signal filtering circuit 8, three-phase current signal true value computing circuit 9, three-phase current signal true value spacing output circuit 10, frequency signal shaping output circuit 11, lead-out terminal 12 are formed.Described input terminal 1 is connected with system power supply circuit 2 by lead, described system power supply circuit 2 is by lead and three-phase voltage sample circuit 3, three-phase voltage signal filtering circuit 4, three-phase voltage signal true value computing circuit 5, three-phase voltage signal true value spacing output circuit 6, three-phase current signal sample circuit 7, and the input end of three-phase current signal filtering circuit 8, three-phase current signal true value computing circuit 9, three-phase current signal true value spacing output circuit 10 connects.Described three-phase voltage signal filtering circuit 4 is connected with frequency signal shaping output circuit 11 by lead.Described three-phase voltage signal true value spacing output circuit 6, three-phase current signal true value spacing output circuit 10, frequency signal shaping output circuit 11 are connected with lead-out terminal 12 by lead.
Claims (1)
1. three phase electrical parameters signal measurement and process system, by input terminal (1), system power supply circuit (2), three-phase voltage sample circuit (3), three-phase voltage signal filtering circuit (4), three-phase voltage signal true value computing circuit (5), three-phase voltage signal true value spacing output circuit (6), three-phase current signal sample circuit (7), three-phase current signal filtering circuit (8), three-phase current signal true value computing circuit (9), three-phase current signal true value spacing output circuit (10), frequency signal shaping output circuit (11), lead-out terminal (12) is formed, it is characterized in that: described input terminal (1) is connected with system power supply circuit (2) by lead, described system power supply circuit (2) is by lead and three-phase voltage sample circuit (3), three-phase voltage signal filtering circuit (4), three-phase voltage signal true value computing circuit (5), three-phase voltage signal true value spacing output circuit (6), three-phase current signal sample circuit (7), three-phase current signal filtering circuit (8), three-phase current signal true value computing circuit (9), the input end of three-phase current signal true value spacing output circuit (10) connects, described three-phase voltage signal filtering circuit (4) is connected with frequency signal shaping output circuit (11) by lead, described three-phase voltage signal true value spacing output circuit (6), three-phase current signal true value spacing output circuit (10), frequency signal shaping output circuit (11) is connected with lead-out terminal (12) by lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202311039U CN201327505Y (en) | 2008-12-15 | 2008-12-15 | Three-phase electrical parameter signal measuring and processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202311039U CN201327505Y (en) | 2008-12-15 | 2008-12-15 | Three-phase electrical parameter signal measuring and processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201327505Y true CN201327505Y (en) | 2009-10-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202311039U Expired - Fee Related CN201327505Y (en) | 2008-12-15 | 2008-12-15 | Three-phase electrical parameter signal measuring and processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201327505Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103197111A (en) * | 2013-01-06 | 2013-07-10 | 浙江中碳科技有限公司 | Three-phase alternating current comprehensive electric quantity detecting method and detection circuit |
| CN103529266A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Integrated electrical parameter detection circuit for monitoring terminal |
| CN103837728A (en) * | 2012-11-21 | 2014-06-04 | 北京航天正信科技有限公司 | Comprehensive tester for passive three-phase electric parameters |
-
2008
- 2008-12-15 CN CNU2008202311039U patent/CN201327505Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103837728A (en) * | 2012-11-21 | 2014-06-04 | 北京航天正信科技有限公司 | Comprehensive tester for passive three-phase electric parameters |
| CN103197111A (en) * | 2013-01-06 | 2013-07-10 | 浙江中碳科技有限公司 | Three-phase alternating current comprehensive electric quantity detecting method and detection circuit |
| CN103529266A (en) * | 2013-10-12 | 2014-01-22 | 河南开启电力实业有限公司 | Integrated electrical parameter detection circuit for monitoring terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091014 Termination date: 20101215 |