CN203037738U - Three-phase electric energy meter realized by and based on ADE7755 - Google Patents
Three-phase electric energy meter realized by and based on ADE7755 Download PDFInfo
- Publication number
- CN203037738U CN203037738U CN 201320012426 CN201320012426U CN203037738U CN 203037738 U CN203037738 U CN 203037738U CN 201320012426 CN201320012426 CN 201320012426 CN 201320012426 U CN201320012426 U CN 201320012426U CN 203037738 U CN203037738 U CN 203037738U
- Authority
- CN
- China
- Prior art keywords
- electric energy
- energy meter
- ade7755
- phase
- phase electric
- 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.)
- Expired - Lifetime
Links
Images
Abstract
The utility model provides a three-phase electric energy meter realized by and based on ADE7755, and the electric energy meter comprises three wire inlets, a control module, a sampling module connected with the control module and used for collecting voltage and current signals and calculating the signals to obtain electric energy parameters, a display module for displaying the electric energy parameters and an input module for carrying out switching display of the parameters, wherein the sampling module comprises calculating chips and sensors respectively connected with the calculating chips, the calculating chip is an ADE7755 chip and a number of the calculating chips is 3, the calculating chips and the control module are connected through high speed SPI buses, and the three-phase electric energy meter is provided with a detection device used for detecting three-phase current sizes and outputting open-phase protection signals. The three-phase electric energy meter realized by and based on ADE7755 employs three sheets of the ADE7755 chips to realize detection of the three-phase electricity, a three-phase calculating chip in the prior art is directly replaced, and the three-phase electric energy meter is low in cost and is easy to be promoted.
Description
Technical field
The utility model is specifically related to a kind of three-phase electric energy meter.
Background technology
Three-phase electric energy meter is used for measuring the electric energy of three-phase circuit power supply output (or load consumption).
Because present three-phase electric energy meter adopts the three phase metering chip more, the price height of dedicated three-phase computation chip causes promoting the use of of three-phase electric energy meter difficult.
The utility model content
In order to solve the deficiency of above-mentioned technology, the purpose of this utility model provides a kind of three-phase electric energy meter of realizing based on ADE7755, and it has solved the deficiency that three-phase electric energy meter in the past is difficult to promote the use of.
The technical scheme that its technical matters that solves the utility model adopts is:
A kind of three-phase electric energy meter of realizing based on ADE7755; it comprises 3 incoming lines; control module; be connected with control module; be used for gathering voltage; current signal also calculates the sampling module of electrical energy parameter; be used for showing the display module of electrical energy parameter and be used for carrying out parameter and show the load module that switches; described sampling module comprises computation chip and the sensor that is connected with computation chip respectively; described computation chip is the ADE7755 chip; described computation chip is 3; be connected by the high speed SPI bus between described computation chip and the control module; described three-phase electric energy meter is provided with for detecting the three-phase current size respectively, the pick-up unit of output open-phase protection signal.
Described sensor comprises voltage sensor and current sensor.
Described control module comprises the SH79F166A chip.
Described load module adopts button.
Described display module comprises LCDs.
Described three-phase electric energy meter is provided with communication module, and described communication module adopts the RS485 interface.
The beneficial effects of the utility model are, the utility model adopts 3 ADE7755 to realize the detection of three-phase electricity, directly substitutes existing three phase metering chip, and cost is low, easily promotes.
Description of drawings
Fig. 1 is logical organization synoptic diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further specified:
Referring to Fig. 1; the utility model comprises 3 incoming lines; control module 2; be connected with control module 2; be used for gathering voltage; current signal also calculates the sampling module 1 of electrical energy parameter; be used for showing the display module 3 of electrical energy parameter and be used for carrying out parameter and show the load module 4 that switches; described sampling module 1 comprises computation chip 12 and the sensor 11 that is connected with computation chip 12 respectively; described computation chip 12 is the ADE7755 chip; described computation chip 12 is 3; be connected by the high speed SPI bus between described computation chip 12 and the control module 2; described three-phase electric energy meter is provided with for detecting the three-phase current size respectively; the pick-up unit 6 of output open-phase protection signal; described sensor 11 comprises voltage sensor and current sensor; described control module 2 comprises the SH79F166A chip; described load module 4 adopts button, and described display module 3 comprises LCDs.
Described three-phase electric energy meter is provided with communication module 5, and described communication module 5 adopts the RS485 interface.
The utility model is provided with and is respectively applied to detect the current signal of A phase, B phase, C phase and the sensor 11 of voltage signal, sensor 11 comprises current sensor and voltage sensor, the current signal that sensor 11 is gathered is input to the computation chip 12 that is connected with A phase, B phase, C respectively with voltage signal, described computation chip 12 adopts the ADE7755 chip, and described ADE7755 chip can provide instantaneous active power and the average active power based on bus voltage and electric current calculating.This device standard surpasses the accuracy requirement of IEC61036 standard code.The unique mimic channel that uses in the ADE7755 chip is ADC and reference voltage circuit.All other signals are handled (for example multiplication and filtering) and are all realized at numeric field, the sort signal disposal route can change with environmental baseline and time very on a large scale in excellent stability and precision is provided.Satisfy precision and the request for utilization of three-phase electric energy meter, use the ADE7755 chip simultaneously, its peripheral circuit is simpler, and cost is low, is easy to promote the use of.
The ADE7755 chip calculates instantaneous active power and average active power based on the electric wire voltage and current of input, and this result is input to control module 2, described control module 2 adopts the SH79F166A chip, the SH79F166A chip is that a kind of high speed, high efficiency 8051 can compatible single-chip microcomputer, the SH79F166A chip has kept most of characteristic of standard 8051 chips, these characteristics comprise built-in 256 byte RAM, in addition, SH79F166 is also integrated outside 256 byte RAM, 16 bit timing device/counters (Timer2) that can compatible 8052 chips, this single-chip microcomputer also comprises the 16 K bytes Flash pieces that are suitable for program and data.The active power and the average active power value that are used for 12 outputs of storage computation chip make things convenient for the user to carry out instantaneous active power and the average active power switching demonstration of A phase, B phase, C phase by the button of load module 4.
The utility model is provided with communication module 5, and communication module 5 adopts the RS485 interface, realizes that three-phase electric energy meter is connected with the direct of electric instrument at scene, realizes the data communication of three-phase electric energy meter and remote computer simultaneously by the RS485 interface.
The utility model is provided with pick-up unit 6; this pick-up unit 6 is by detecting the electric current of A phase, B phase, C phase, and when the electric current of arbitrary phase electric current occurred and is 0, it sent open-phase protection signal to external isolating switch; realization is avoided unnecessary power wastage to the dump of three-phase electric energy meter.
The display module 3 that adopts LCDs to constitute, LCDs can realize multidata demonstration, makes things convenient for the user to check several data in same display screen.
Embodiment should not be considered as restriction of the present utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection domain of the present utility model.
Claims (6)
1. three-phase electric energy meter of realizing based on ADE7755; it comprises 3 incoming lines; control module (2); be connected with control module (2); be used for gathering voltage; current signal also calculates the sampling module (1) of electrical energy parameter; be used for showing the display module (3) of electrical energy parameter and be used for carrying out parameter and show the load module (4) that switches; it is characterized in that: described sampling module (1) comprises computation chip (12) and the sensor (11) that is connected with computation chip (12) respectively; described computation chip (12) is the ADE7755 chip; described computation chip (12) is 3; be connected by the high speed SPI bus between described computation chip (12) and the control module (2); described three-phase electric energy meter is provided with for detecting the three-phase current size respectively, the pick-up unit (6) of output open-phase protection signal.
2. the three-phase electric energy meter of realizing based on ADE7755 according to claim 1 is characterized in that described sensor (11) comprises voltage sensor and current sensor.
3. the three-phase electric energy meter of realizing based on ADE7755 according to claim 1 is characterized in that described control module (2) comprises the SH79F166A chip.
4. the three-phase electric energy meter of realizing based on ADE7755 according to claim 1 is characterized in that, described load module (4) adopts the button input pattern.
5. the three-phase electric energy meter of realizing based on ADE7755 according to claim 1 is characterized in that described display module (3) comprises LCDs.
6. the three-phase electric energy meter of realizing based on ADE7755 according to claim 1 is characterized in that described three-phase electric energy meter is provided with communication module (5), and described communication module (5) adopts the RS485 interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320012426 CN203037738U (en) | 2013-01-10 | 2013-01-10 | Three-phase electric energy meter realized by and based on ADE7755 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320012426 CN203037738U (en) | 2013-01-10 | 2013-01-10 | Three-phase electric energy meter realized by and based on ADE7755 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203037738U true CN203037738U (en) | 2013-07-03 |
Family
ID=48689849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320012426 Expired - Lifetime CN203037738U (en) | 2013-01-10 | 2013-01-10 | Three-phase electric energy meter realized by and based on ADE7755 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203037738U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529273A (en) * | 2013-10-22 | 2014-01-22 | 南车株洲电力机车有限公司 | Energy monitoring device of energy storage device of energy-storage electric traction vehicle |
-
2013
- 2013-01-10 CN CN 201320012426 patent/CN203037738U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103529273A (en) * | 2013-10-22 | 2014-01-22 | 南车株洲电力机车有限公司 | Energy monitoring device of energy storage device of energy-storage electric traction vehicle |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201845051U (en) | Three-phase intelligent electric energy meter | |
| CN103207363B (en) | A kind of instrument measuring solar cell parameter | |
| CN101464503A (en) | Electric energy quality monitoring terminal | |
| CN202230155U (en) | Three-phase digital intelligent electric energy quality detection device | |
| CN201215505Y (en) | Digital weighing controller | |
| CN203037738U (en) | Three-phase electric energy meter realized by and based on ADE7755 | |
| CN202794284U (en) | Multifunctional intelligent electric power meter | |
| CN103176022A (en) | Digital multimeter with automatic range conversion function | |
| CN202631627U (en) | Strong electromagnetic field resistant intelligent ammeter | |
| CN202649318U (en) | Multifunctional electric power meter with voltage phase sequence detection function | |
| CN204439682U (en) | A kind of intelligent electric energy meter | |
| CN202916335U (en) | Three-phase current meter based on single-phase metering chip | |
| CN202948052U (en) | Digital voltammeter based on measuring chip | |
| CN202997213U (en) | Multifunctional socket | |
| CN201251607Y (en) | Three-phase intelligent digital display meter hardware system | |
| CN204945213U (en) | A kind of networking multifunction instrument | |
| CN202614844U (en) | Single phase electronic type electric energy meter based on DDS (digital display scope) processor | |
| CN203084075U (en) | Dipolar single-phase multi-functional guide rail type electric energy meter | |
| CN203054121U (en) | Current calibration system for sinusoidal AC motor protector | |
| CN203337730U (en) | Multichannel effective power acquisition instrument | |
| CN205193132U (en) | No line number word storage oscilloscope | |
| CN203643505U (en) | Single-phase intelligent electrical measuring instrument | |
| CN203489973U (en) | Infrared sensing wakeup apparatus | |
| CN209151093U (en) | A kind of power analyzer for photovoltaic generating system | |
| CN203275518U (en) | Intelligent digital indicator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160704 Address after: 337000 Jiangxi city of Pingxiang province Chishan Industrial Park Patentee after: JIANGXI HJATIS POWER INDUSTRY Co.,Ltd. Address before: 325604, Jetta road 84, Liushi Town, Wenzhou, Zhejiang, Yueqing Patentee before: ZHEJIANG HUAJIAN ELECTRONIC TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |