CN204116452U - A kind of measurement mechanism for transmission line of electricity - Google Patents
A kind of measurement mechanism for transmission line of electricity Download PDFInfo
- Publication number
- CN204116452U CN204116452U CN201420568022.3U CN201420568022U CN204116452U CN 204116452 U CN204116452 U CN 204116452U CN 201420568022 U CN201420568022 U CN 201420568022U CN 204116452 U CN204116452 U CN 204116452U
- Authority
- CN
- China
- Prior art keywords
- pin
- connects
- chip microcomputer
- display
- chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005259 measurement Methods 0.000 title claims abstract description 29
- 230000005611 electricity Effects 0.000 title claims abstract description 25
- 230000005540 biological transmission Effects 0.000 title claims abstract description 23
- 239000004973 liquid crystal related substance Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract 1
- 230000006870 function Effects 0.000 description 9
- 238000013461 design Methods 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000018109 developmental process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000002547 anomalous effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000008672 reprogramming Effects 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Abstract
The utility model relates to a kind of measurement mechanism for transmission line of electricity, and described device comprises voltage transformer (VT), current transformer, frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display; Described voltage transformer (VT), current transformer are connected successively with frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display.The utility model proposes on the basis analyzed the current situation of current electric parameter tester, technical scheme in the utility model uses electric parameter measurement principle as theoretical foundation, the data utilizing electric energy metrical part and single-chip microcomputer to gather and process, realize the order that power frequency detects.
Description
Technical field
The utility model relates to a kind of measurement mechanism, specifically relates to a kind of measurement mechanism for transmission line of electricity.
Background technology
Along with developing rapidly of electric power and improving constantly of electric management level, electric system becomes increasingly complex.The progress of industrial expansion, science and technology, power industry is to Large Copacity future development, and enterprise's productive technology management constantly proposes new requirement to industrial electrical accurate-metering, and its energy-saving and cost-reducing be the outstanding feature embodying industrial progress and development level.Improve electric energy effective rate of utilization, comprehensive monitoring and the improvement quality of power supply, proposed new requirement.Realize the comprehensive regulation to the quality of power supply, on-line analysis and the Real-Time Monitoring of the quality of power supply must be realized, to guarantee the quality of power supply.Therefore the electric parameter tester as the indispensable ingredient of electric power management system also plays a part more and more important, but the function singleness of traditional electric parameter tester, can not meet one multiplex, to measure electrical parameters, then need multiple instrument, this causes the waste of equipment on the one hand, is difficult on the other hand ensure synchro measure, brings difficulty to testing and analysis.
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of measurement mechanism for transmission line of electricity, the utility model adopts potential and current transformers to be separated by power frequency electric signal, draw voltage and current respectively, then circuit after filtering, interference is filtered, then voltage and current is sent into energy calculate chip, carry out the calculating of power factor.After obtaining result of calculation, result is delivered in single-chip microcomputer, directly send display after treatment, thus complete design.
The purpose of this utility model adopts following technical proposals to realize:
For a measurement mechanism for transmission line of electricity, its improvements are, described device comprises voltage transformer (VT), current transformer, frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display;
Described voltage transformer (VT), current transformer are connected successively with frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display.
Preferably, described voltage transformer (VT) is HPT205N voltage transformer (VT); Described current transformer is TA5061 current transformer; Described frequency overlapped-resistable filter is the frequency overlapped-resistable filter be made up of C8051F330D and MAX260; Described energy calculate chip is ADE7758 energy calculate chip; Described single-chip microcomputer is AT89C52 single-chip microcomputer; Described display is HC1602 display.
Preferably, described voltage transformer (VT) Ua, N hold connecting circuit+,-pole, VAP end connects the IN end of frequency overlapped-resistable filter.
Preferably, described current transformer IA+, IA-hold connecting circuit+,-pole, IAP end connects the IN end of frequency overlapped-resistable filter.
Preferably, in the frequency overlapped-resistable filter be made up of C8051F330D and MAX260, the IN end of MAX260 connects VAP, IAP of current transformer, voltage transformer (VT), the WR pin of MAX260 connects the P0.5 pin of C8051F330D, and the CLKB pin of MAX260 connects the P0.7 pin of C8051F330D; The OUT end of MAX260 connects DVDD, AVDD pin of energy calculate chip.
Preferably, described energy calculate chip input end connects frequency overlapped-resistable filter, and output terminal connects single-chip microcomputer.
Further, described energy calculate chip DOUT pin connects the P1.4 pin of single-chip microcomputer, and SCLK pin connects the P1.5 pin of single-chip microcomputer, and DIN end connects the P1.6 pin of single-chip microcomputer, and CD end connects the P1.7 pin of single-chip microcomputer.
Further, described single-chip microcomputer goes out end and connects HC1602 liquid crystal display, and single-chip microcomputer P0.0-P0.7 pin connects the DB0-DB7 pin of display, and P2.7 pin connects the RS pin of display, P2.6 pin connects the R/W pin of display, and P2.5 pin connects the E pin of display.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model proposes on the basis analyzed the current situation of current electric parameter tester, and the technical scheme in the utility model uses electric parameter measurement principle as theoretical foundation, utilizes the order that electric energy metrical part and chip microcontroller power frequency detect.
Play an increasingly important role in the power consuming administrative system of society because power frequency detects, its function is also able to variation and expands, due to employing is that single-chip microcomputer is as main control section, its extendability can be utilized, the function of detector is strengthened and perfect, be connected with special medium as by its expansion interface, such as IC-card etc. can realize pre paid functionality, arrange according to the different periods function that different electricity prices can realize multi tariff.Due to the needs of building a conservation-minded society, the advantage of electric parameter tester in power consuming administrative system will be embodied further, and the application of this type of detector will have far-reaching prospect, also has important social effect to its research and design.
Accompanying drawing explanation
A kind of measurement mechanism schematic diagram for transmission line of electricity that Fig. 1 provides for the utility model.
A kind of measurement mechanism voltage transformer circuit figure for transmission line of electricity that Fig. 2 provides for the utility model.
A kind of measurement mechanism current transformer circuit figure for transmission line of electricity that Fig. 3 provides for the utility model.
A kind of measurement mechanism frequency overlapped-resistable filter schematic diagram for transmission line of electricity that Fig. 4 provides for the utility model.
A kind of measurement mechanism energy calculate chip for transmission line of electricity that Fig. 5 provides for the utility model and single-chip microcomputer connection diagram.
A kind of measurement mechanism single-chip microcomputer for transmission line of electricity that Fig. 6 provides for the utility model and display connection diagram.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
A kind of measurement mechanism for transmission line of electricity of the utility model comprises the frequency overlapped-resistable filter 4.ADE7758 energy calculate chip 5.AT89C52 single-chip microcomputer 6.HC1602 display that 1.HPT205N voltage transformer (VT) 2.TA5061 current transformer 3. is made up of C8051F330D and MAX260.
As shown in Figure 1, a kind of measurement mechanism for transmission line of electricity of the utility model is as described below,
1. use HPT205N voltage transformer (VT), TA5061 current transformer connecting circuit, measuring voltage, electric current.
2. use frequency overlapped-resistable filter to connect voltage transformer (VT), current transformer, by undesired signal and noise filtering.
3. use ADE7758 energy calculate chip to connect wave filter, carry out electrical energy parameter calculating.
4. use AT89C52 single-chip microcomputer to connect energy calculate chip, carry out signal transacting.
5. use HC1602 display to connect single-chip microcomputer, the line parameter circuit value (mainly comprising electric energy, power factor etc.) that display measurement calculates.
A kind of measurement mechanism for transmission line of electricity of the utility model specifically connects as follows:
1.HPT205N voltage transformer (VT)
As shown in Figure 2, the power-frequency voltage signal of input is mainly converted to the voltage signal (± 5V) that ADE7758 can measure by HPT205N voltage transformer (VT).Ua, N hold connecting circuit+,-pole, VAP end connect frequency overlapped-resistable filter IN end.
Voltage input end circuit the power-frequency voltage signal of input is converted to the voltage signal (± 5V) that ADE7758 can measure.Be input as example with the board design of A phase voltage, the design of other two-phase input channels is identical.As shown in Figure 3, the voltage transformer (VT) selected is HPT205N to voltage sampling circuit, and input current scope is 0-2mA, and output current scope is 0-2mA.Resistance R4 selects 220, and the electric signal maximal value exported like this is 0.44V, can not more than 0.5V.R1 is 130K.R5 and C1 forms a RC wave filter.
2.TA5061 current transformer
The power frequency current signal of input is mainly converted to the current signal (0.1A) that ADE7758 can measure by TA5061 current transformer.IA+, IA-hold connecting circuit+,-pole, IAP end connect frequency overlapped-resistable filter IN end.
Current channel is inputted by three pairs of differential voltages, improves anti-common mode interference ability.Three pairs of inputs represent A, B, C three-phase respectively.Now for IAP item, as shown in Figure 3, the input of other electric current is identical with it.The mutual inductor CT1 selected is TA5061, its input current 0-500A, output current 0.1A.Current channel IAP, IAN peak signal voltage conversion range of ADE7758 is ± 0.5V.The sample of signal resistance being wherein sent to ADE7758 is two 1.8 resistance R10 and R11 when to export peak signal be 0.1A, outputs signal maximumly to be about 0.36V, can not more than 0.5V.Limiter diode plays a protective role.
3.C8051F330D the frequency overlapped-resistable filter formed with MAX260
The frequency overlapped-resistable filter major function be made up of C8051F330D and MAX260 is filtered interference, noise signal.The IN end of MAX260 connects VAP, IAP of current transformer, voltage transformer (VT), and the WR pin of MAX260 connects the P0.5 pin of C8051F330D, and the CLKB pin of MAX260 connects the P0.7 pin of C8051F330D.The OUT end of MAX260 connects DVDD, AVDD pin of energy calculate chip.
4.ADE7758 energy calculate chip
ADE7758 energy calculate chip functions is that electrical energy parameter calculates.Input end connects frequency overlapped-resistable filter.As shown in Figure 3, energy calculate chip output connects single-chip microcomputer, and DOUT pin connects the P1.4 pin of single-chip microcomputer, and SCLK pin connects the P1.5 pin of single-chip microcomputer, and DIN end connects the P1.6 pin of single-chip microcomputer, and C/S end connects the P1.7 pin of single-chip microcomputer.
ADE7758 is the three-phase electrical energy computation chip of a pinpoint accuracy, with two-way pulse output function and a serial line interface, be integrated with 16,6 tunnel second order ADC analog to digital converter, digital integrator, High Performance DSP, the circuit such as reference circuit and temperature sensor, and allly to gain merit, the idle Signal Processing Element needed with apparent electric energy metrical and the effective value First Astronautic Research Institute for Measurement and Test, in 1000:l dynamic range, error is less than 0.1%, provides meritorious, idle and the data such as apparent electric energy, voltage, current effective value and waveform sampling; Phase three-wire three/three-phase and four-line is compatible.ADE7758 provides system calibration function mutually for each, includes valid value offset calibration, phase alignment, the calibration of power, and DSP inside compensates reactive energy; Independently active energy and reactive energy pulse is provided to export.These functional characteristics greatly reduce the software development workload estimate of MCU, simplify the design difficulty of power measurement new opplication module, full-electronic or real solidification, staticization can be accomplished, to be conducive to improving performance, reduce costs, make electric energy metrical have high precision, high reliability, non-maintaining and bidirectional communication function.
5.AT89C52 single-chip microcomputer
The parameter signal calculated is treated to the displayable signal of display by AT89C52 single-chip microcomputer.Its input end connects ADE7758 energy calculate chip.Output terminal connects HC1602 liquid crystal display, and P0.0-P0.7 pin connects the DB0-DB7 pin of display, and P2.7 pin connects the RS pin of display, and P2.6 pin connects the R/W pin of display, and P2.5 pin connects the E pin of display.
AT89C52 is a kind of 8 single-chip microcomputers of Low Power High Performance, Flash with a 4KB in sheet can compile erasable read only storer online, it have employed the high-density nonvolatile memory technology of CMOS technology and atmel corp, and its output pin and order set and 51 series monolithics compatible.Storer in sheet allows online reprogramming or programmes with conventional programming non-volatile memory device.There is the performance that three grades of program storages are maintained secrecy simultaneously.
6.HC1602 display
Display employing 16 × 2 character mode lcd HC1602, with the interface circuit of single-chip microcomputer, as shown in Figure 6, in figure, C4, C5 are the decoupling capacitor of single-chip microcomputer and Liquid Crystal Module HC1602.DB0 ~ DB7 is the data line of HC1602, connects with P0.0 ~ P0.7 terminal of single-chip microcomputer.R15 is the adjustable potentiometer of resistance, is used for adjusting the contrast of liquid crystal display; When VO terminal voltage-to-ground is 0V, liquid crystal display is the most clear.A, K are power supply terminal and the ground terminal of HC1602 backlight, and wherein power supply terminal A is connected with primary power by wire jumper JP2.JP2 disconnects to reduce watt-hour meter energy consumption under normal circumstances; Close JP2 when electricity quantity inquiring, connect backlight power supply.Display combines with button, is used for realizing the query display of electrical parameter, the display of anomalous event record queries and timing parameter initial value input adjustment result and shows.When not interrupting occurring, carry out total meritorious, capacity of idle power display.Charactes Display is the ASCII character realization of being read in this character by P0 mouth, and ASCII character corresponding for this character is write in the internal register of LCD by P0 mouth.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify to embodiment of the present utility model or equivalent replacement, and not departing from any amendment of the utility model spirit and scope or equivalent replacement, it all should be encompassed in the middle of right of the present utility model.
Claims (8)
1. for a measurement mechanism for transmission line of electricity, it is characterized in that, described device comprises voltage transformer (VT), current transformer, frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display;
Described voltage transformer (VT), current transformer are connected successively with frequency overlapped-resistable filter, energy calculate chip, single-chip microcomputer and display.
2. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, it is characterized in that, described voltage transformer (VT) is HPT205N voltage transformer (VT); Described current transformer is TA5061 current transformer; Described frequency overlapped-resistable filter is the frequency overlapped-resistable filter be made up of C8051F330D and MAX260; Described energy calculate chip is ADE7758 energy calculate chip; Described single-chip microcomputer is AT89C52 single-chip microcomputer; Described display is HC1602 display.
3. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, is characterized in that, described voltage transformer (VT) Ua, N hold connecting circuit+,-pole, VAP end connects the IN end of frequency overlapped-resistable filter.
4. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, is characterized in that, described current transformer IA+, IA-hold connecting circuit+,-pole, IAP end connects the IN end of frequency overlapped-resistable filter.
5. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, it is characterized in that, in the frequency overlapped-resistable filter be made up of C8051F330D and MAX260, the IN end of MAX260 connects VAP, IAP of current transformer, voltage transformer (VT), the WR pin of MAX260 connects the P0.5 pin of C8051F330D, and the CLKB pin of MAX260 connects the P0.7 pin of C8051F330D; The OUT end of MAX260 connects DVDD, AVDD pin of energy calculate chip.
6. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, is characterized in that, described energy calculate chip input end connects frequency overlapped-resistable filter, and output terminal connects single-chip microcomputer.
7. a kind of measurement mechanism for transmission line of electricity as claimed in claim 6, it is characterized in that, described energy calculate chip DOUT pin connects the P1.4 pin of single-chip microcomputer, SCLK pin connects the P1.5 pin of single-chip microcomputer, DIN end connects the P1.6 pin of single-chip microcomputer, and CD end connects the P1.7 pin of single-chip microcomputer.
8. a kind of measurement mechanism for transmission line of electricity as claimed in claim 1, it is characterized in that, described single-chip microcomputer goes out end and connects HC1602 liquid crystal display, single-chip microcomputer P0.0-P0.7 pin connects the DB0-DB7 pin of display, P2.7 pin connects the RS pin of display, P2.6 pin connects the R/W pin of display, and P2.5 pin connects the E pin of display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568022.3U CN204116452U (en) | 2014-09-29 | 2014-09-29 | A kind of measurement mechanism for transmission line of electricity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420568022.3U CN204116452U (en) | 2014-09-29 | 2014-09-29 | A kind of measurement mechanism for transmission line of electricity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204116452U true CN204116452U (en) | 2015-01-21 |
Family
ID=52333748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420568022.3U Active CN204116452U (en) | 2014-09-29 | 2014-09-29 | A kind of measurement mechanism for transmission line of electricity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204116452U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864287A (en) * | 2017-03-01 | 2017-06-20 | 国网上海市电力公司 | A kind of vehicle-mounted mobile charging device |
| CN106885940A (en) * | 2017-03-01 | 2017-06-23 | 国网上海市电力公司 | A kind of ic for energy metering for vehicle-mounted mobile charging device |
| CN107054122A (en) * | 2017-03-01 | 2017-08-18 | 国网上海市电力公司 | A kind of vehicle-mounted mobile charging device monitoring system |
-
2014
- 2014-09-29 CN CN201420568022.3U patent/CN204116452U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106864287A (en) * | 2017-03-01 | 2017-06-20 | 国网上海市电力公司 | A kind of vehicle-mounted mobile charging device |
| CN106885940A (en) * | 2017-03-01 | 2017-06-23 | 国网上海市电力公司 | A kind of ic for energy metering for vehicle-mounted mobile charging device |
| CN107054122A (en) * | 2017-03-01 | 2017-08-18 | 国网上海市电力公司 | A kind of vehicle-mounted mobile charging device monitoring system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202583318U (en) | Three-phase harmonic wave electric energy meter based on ADE7878 chip | |
| CN204514991U (en) | A kind of intelligent electric meter | |
| CN102435838A (en) | Basic electric quantity type energy-efficiency data collecting terminal | |
| CN204008845U (en) | A kind of single-phase electric energy meter metering circuit | |
| CN204116452U (en) | A kind of measurement mechanism for transmission line of electricity | |
| CN105870974B (en) | Distributed photovoltaic grid-connected system electrical parameter bidirectional measurement device | |
| CN101408594A (en) | Device suitable for monitoring direct-current power supply ripple coefficient | |
| CN103163449B (en) | Signal circuit time delay detection system | |
| CN102436733A (en) | Thermotechnical electric quantity type energy efficiency data collecting terminal | |
| CN201311485Y (en) | Ripple factor detecting device adapted to DC power supply | |
| CN106124909A (en) | A kind of electric energy detection metering system | |
| CN204241574U (en) | A kind of power capacitor on-line measurement device | |
| CN202494744U (en) | Device for detecting quality of electric energy | |
| CN204613289U (en) | A kind of intelligent instrument can eliminating high frequency interference | |
| CN205749669U (en) | A kind of three-phase remote bill control intelligent electric energy meter | |
| CN2833607Y (en) | Multifunctional electric energy metering instrument | |
| CN104181488A (en) | AC voltage-resistant testing apparatus | |
| CN203587685U (en) | Voltage-adaptive three-phase multifunctional electric energy meter | |
| CN203275517U (en) | Multifunctional three-phase harmonic wave electric energy meter | |
| CN202693670U (en) | Digital readout network instrument | |
| CN105445545A (en) | IEC62056-standard-based three-phase harmonic fiber electric energy meter | |
| CN202304874U (en) | Thermotechnical type energy efficiency data acquisition terminal | |
| CN201897717U (en) | Portable parallelly connected power filter debug instrument | |
| CN205160469U (en) | A monitor cell for photovoltaic power generation system monitoring devices | |
| CN202421324U (en) | Basic electric quantity type efficiency data acquisition terminal |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |