CN201583594U - Single-phase carrier electric energy meter - Google Patents
Single-phase carrier electric energy meter Download PDFInfo
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- CN201583594U CN201583594U CN2009201818765U CN200920181876U CN201583594U CN 201583594 U CN201583594 U CN 201583594U CN 2009201818765 U CN2009201818765 U CN 2009201818765U CN 200920181876 U CN200920181876 U CN 200920181876U CN 201583594 U CN201583594 U CN 201583594U
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- electric energy
- energy meter
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- phase carrier
- control mcu
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Abstract
The utility model discloses a single-phase carrier electric energy meter which comprises a master control MCU, an electric energy metering circuit, a carrier communication module, a working power supply, an LCD display screen, a pulse and a work indication output circuit, a safety certification module, as well as an infrared and RS485 communication interface, and is characterized in that the corresponding functional pins at the outer part of the master control MCU are connected with the electric energy metering circuit, the carrier communication module, the LCD display screen, the pulse and the work indication output circuit, the safety certification module and the infrared and RS485 communication interface. The single-phase carrier electric energy meter also comprises a data storage part which is connected to the corresponding functional pin at the outer part of the master control MCU. The single-phase carrier electric energy meter is applied to a remote concentrated meter reading system, is taken as low-end equipment of a system, and realizes the functions of energy measurement and carrier communication of electric quantity data power wire of a single user. The meter has good reliability, stable performance and good communication capability.
Description
Technical field:
The utility model relates to a kind of electric energy meter, relates in particular to a kind of single-phase carrier electric energy meter.
Background technology:
Present domestic ammeter installation site is than higher, often is locked in the table case, and the user needs cat ladder or opens the table case and just can swipe the card and purchase electricity and check the electricity consumption situation, has brought a lot of inconvenience to the user like this.
Summary of the invention:
The purpose of this utility model is, at above-mentioned shortcoming, provides a kind of single-phase carrier electric energy meter based on carrier wave, infrared and RS485 communication.
The purpose of this utility model is to realize like this, described single-phase carrier electric energy meter, comprise main control MCU, ic for energy metering, carrier communication module, working power, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface, its design feature is for being connected with ic for energy metering, carrier communication module, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface on the outside function corresponding pin of main control MCU.
The purpose of this utility model also can be achieved through the following technical solutions, described single-phase carrier electric energy meter, and its characteristics are for comprising the data storage part, data storage partly is connected on the outside function corresponding pin of main control MCU.Described single-phase carrier electric energy meter, its characteristics are ESAM module or the CPU card that described safety certification module adopts the close SM1 of state.Described single-phase carrier electric energy meter, its characteristics are ESAM module and the CPU card that described safety certification module adopts the close SM1 of state.
The utility model is compared with original electric energy meter has following advantage: single-phase carrier electric energy meter of the present utility model can be applied to remote auto meter reading system, as the low side devices of system, realize the electric energy metrical of unique user, the function of electric quantity data electric line carrier communication.This table reliability, stable performance, communication capacity are good.
1) adopts ESAM encrypting module assurance user profile and purchase electric data security.
2) adopt power line carrier communication, need not set up other circuit, convenient and reliable.Also possess infrared, the RS485 interface is checked meter and the parameter setting.
3) the utility model employing specialized large scale integrated circuit metering rated frequency is the single-phase AC active energy of 50Hz; And utilize low-voltage power line as communication channel, and the power consumption data are uploaded in the power line carrier mode, offer remote auto meter reading system.
4) electronic counting partly adopts ADE7755, and the active energy metering is accurate, and long-term work must adjustment.
5) oppositely electric weight is accumulated to forward, not metering separately.
6) realize centralized automatic meter-reading.
7) can the spread spectrum mode carry out electric line carrier communication: communication context---whole distribute-electricity transformer district.
8) data transmission is accurate, reliable, ability to communicate is strong.
9) have the measuring ability of uncapping, write down last three times time of uncapping and master switch number of times.
Description of drawings:
Fig. 1 is a schematic block circuit diagram of the present utility model.
Embodiment:
Below in conjunction with drawings and Examples the utility model is elaborated:
As shown in Figure 1, single-phase carrier electric energy meter described in the utility model, it comprises main control MCU, ic for energy metering, carrier communication module, working power, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface, and its design feature is for being connected with ic for energy metering, carrier communication module, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface on the outside function corresponding pin of main control MCU.On the outside function corresponding pin of main control MCU, also can be connected with the data storage part.
Concrete each component models and function are as follows:
1) main control MCU: adopt existing commercially available prod, finish power information accumulative total and the calculating such as protocol analysis, electric energy accumulative total, period, rate of DLT645, and detect the work of each module, and can show by LCD.
2) ic for energy metering: adopt CS5464 single-phase electric energy computation chip, calculates forward and reverse meritoriously, forward and reverse idle, measure voltage, live wire, the neutral line current of input, promptly current sample, voltage sample, neutral line current are sampled.Implementation method is as follows:
Respectively voltage signal and current signal are sampled by resistance pressure-dividing network, splitter summation current transformer, deliver to electric energy computation chip, carry out multiplying at the filtering of the inner process of computation chip, difference amplification, A/D conversion and multiplier circuit, finish the instantaneous power of the electric energy that is measured and measure; Again by low-pass filtering and " numeral/frequency " converter, output and the proportional frequency pulse signal of metering electric energy average power, wherein high-frequency impulse output is sent into the main control chip group and is handled.
CS5464 has software calibration function, by simple operations and software processes, can finish calibration, and this can enhance productivity greatly.
3) carrier communication module: adopt existing commercially available prod, this module is finished the transmission of user profile on line of electric force, the protocol analysis of link layer, and meets the communication information of DLT645-2007 agreement fully at last base table.
4) working power: adopt the transformer mode, be input as the line of electric force of 220v, output has three the tunnel, is respectively 5v ,+12v, and+12v supplies with main control part circuit, 485 communication insulating power supplies, electric energy metrical part power supply respectively.
5) LCD display: the power information of difference explicit user and the failure message of ammeter,
6) pulse and work indication output circuit: the output of metrical pulse, operate as normal indication.
7) safety certification module: the ESAM module that adopts the close SM1 of state is or/and the CPU card, user's power information is carried out ciphertext storage and exchange, important parameters such as parameter and important power information that need are made amendment, carry out safety certification, and the normal and illegal wrong situation about doing of record, feed back to main website by carrier wave and CPU subscriber card.
Authentication and authorization between terminal, subscriber card and the ESAM module is to be carried out through specific mathematical operation flow process by the key of the various authorities that treasure in it and SM1 enciphering and deciphering algorithm.
8) data storage part: load or some unessential parameters of storage user's special time are used for the electricity consumption situation in user's the certain hour is analyzed.
9) infrared and RS485 communication interface: except that checking meter by carrier wave, can also by infrared, the RS485 interface is checked meter and the parameter setting.
Single-phase carrier electric energy meter principle of work of the present utility model:
Concrete applicable cases one: concentrator is regularly gathered the power information of electric energy meter by electric line carrier communication, these information are delivered to main website, main website finishes charging, and according to condition judgment whether to user's outage with restore electricity, by advocating to issue to operate a switch and allow to power on to instruct electric energy meter, finish the control of operating a switch and allowing to power on by electric energy meter by concentrator, power line communication.Be the guarantee information transmission safety, the ESAM module that we are embedded in the band close SM1 of state at table is finished the legal identity authentication between concentrator (main website) and the ammeter.Above-mentioned concentrator adopts the carrier wave concentrator, is the product of prior art production.
Concrete applicable cases two: electric power meter end is finished charging, the user supplements with money electric energy meter by user CPU card (long-range sale of electricity terminal), the power information of electric energy meter is regularly gathered by concentrator and main website by electric line carrier communication, and the database information of these information and sale of electricity terminal carried out unified Analysis, the situation of effective monitoring electricity consumption.The information security that relates to of this part is with situation one.Above-mentioned concentrator adopts the carrier wave concentrator, is the product of prior art production.
Claims (4)
1. single-phase carrier electric energy meter, comprise main control MCU, ic for energy metering, carrier communication module, working power, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface, it is characterized in that: on the outside function corresponding pin of main control MCU, be connected with ic for energy metering, carrier communication module, LCD display, pulse and work indication output circuit, safety certification module and infrared and RS485 communication interface.
2. single-phase carrier electric energy meter according to claim 1 is characterized in that: comprise the data storage part, data storage partly is connected on the outside function corresponding pin of main control MCU.
3. single-phase carrier electric energy meter according to claim 1 and 2 is characterized in that: described safety certification module adopts ESAM module or the CPU card of the close SM1 of state.
4. single-phase carrier electric energy meter according to claim 1 and 2 is characterized in that: described safety certification module adopts ESAM module and the CPU card of the close SM1 of state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201818765U CN201583594U (en) | 2009-12-28 | 2009-12-28 | Single-phase carrier electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201818765U CN201583594U (en) | 2009-12-28 | 2009-12-28 | Single-phase carrier electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201583594U true CN201583594U (en) | 2010-09-15 |
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ID=42725599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201818765U Expired - Fee Related CN201583594U (en) | 2009-12-28 | 2009-12-28 | Single-phase carrier electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201583594U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737488A (en) * | 2012-05-05 | 2012-10-17 | 淮南联合大学 | 3G-based single-phase intelligent meter reading network control system |
| CN103267892A (en) * | 2013-05-10 | 2013-08-28 | 浙江恒业电子有限公司 | Single-phase remote charge control electric energy meter |
| CN106952411A (en) * | 2016-12-13 | 2017-07-14 | 浙江恒业电子有限公司 | A kind of single-phase charge-controlled intelligent electric meter |
| CN110927445A (en) * | 2019-11-25 | 2020-03-27 | 国网天津市电力公司电力科学研究院 | Simulation single-phase electric energy meter compatible with narrow-band module and HPLC module full detection |
-
2009
- 2009-12-28 CN CN2009201818765U patent/CN201583594U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102737488A (en) * | 2012-05-05 | 2012-10-17 | 淮南联合大学 | 3G-based single-phase intelligent meter reading network control system |
| CN102737488B (en) * | 2012-05-05 | 2013-11-06 | 淮南联合大学 | 3G-based single-phase intelligent meter reading network control system |
| CN103267892A (en) * | 2013-05-10 | 2013-08-28 | 浙江恒业电子有限公司 | Single-phase remote charge control electric energy meter |
| CN106952411A (en) * | 2016-12-13 | 2017-07-14 | 浙江恒业电子有限公司 | A kind of single-phase charge-controlled intelligent electric meter |
| CN106952411B (en) * | 2016-12-13 | 2022-11-11 | 浙江恒业电子有限公司 | Single-phase cost control intelligent electric energy meter |
| CN110927445A (en) * | 2019-11-25 | 2020-03-27 | 国网天津市电力公司电力科学研究院 | Simulation single-phase electric energy meter compatible with narrow-band module and HPLC module full detection |
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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: 20100915 Termination date: 20141228 |
|
| EXPY | Termination of patent right or utility model |