CN201886052U - Split-type single-phase electric energy meter - Google Patents
Split-type single-phase electric energy meter Download PDFInfo
- Publication number
- CN201886052U CN201886052U CN2010206516317U CN201020651631U CN201886052U CN 201886052 U CN201886052 U CN 201886052U CN 2010206516317 U CN2010206516317 U CN 2010206516317U CN 201020651631 U CN201020651631 U CN 201020651631U CN 201886052 U CN201886052 U CN 201886052U
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- display device
- electric energy
- energy meter
- communication interface
- user
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Abstract
The utility model discloses a split-type single-phase electric energy meter, which comprises a metering device and a display device, wherein the metering device is installed in an outdoor distribution box, the display device is installed in a user room, an RS485 communication interface is provided by the metering device to be communicated with the display device, meanwhile, a direct-current power supply is also provided by the RS485 communication interface to supply electricity for the display device, and the RS485 communication interface provided by the metering device is directly connected to the display device through a four-core telephone wire. In the utility model, because the metering device and the display device of the electric energy meter are separated, the metering device is installed in the outdoor distribution box for centralized management, and the display device is installed in the user room, a user can not directly contact the metering device of the electric energy meter, accordingly electricity-stealing phenomena are reduced, the user can purchase the electricity and inquire the data through the display device installed in the room, and the operation of the user for the electric energy meter is facilitated.
Description
Technical field
The utility model relates to a kind of split type single-phase electric energy meter.
Background technology
The electric energy meter that provides in the market is the electric energy meter that integrates information demonstration, electric energy metrical, purchases electric data processing, yet present residential building generally is that electric energy meter is installed on centralized management in the unified panel box (or switchgear building), this way to manage is purchased electricity etc. to the user and has been caused certain inconvenience, and is prone to stealing electricity phenomenon.
The utility model content
The purpose of this utility model is to provide a kind of and can reduces the stealing electricity phenomenon generation and make things convenient for the user to purchase the split type single-phase electric energy meter of electricity and data query.
This split type single-phase electric energy meter that the utility model provides, comprise measuring apparatus and display device, described measuring apparatus is installed in the distributed board outdoor, and described display device is installed on the user within doors, and described measuring apparatus provides one road RS485 communication interface and described display device to communicate.
Described RS485 communication interface also provides No. one direct supply to power to described display device simultaneously.The RS485 communication interface that described measuring apparatus provides directly is connected to described display device by the four-core telephone wire.
The utility model is owing to separate the measuring apparatus of electric energy meter and display device, measuring apparatus is loaded in the distributed board outdoor manages concentratedly, and display device is installed on the user within doors, make the user can not directly contact the measuring apparatus of electric energy meter, thereby reduced the generation of stealing electricity phenomenon, and the user can purchase electricity and data query by the display device that is installed within doors, has made things convenient for the operation of user to electric energy meter.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is the DC power-supply circuit and the RS485 communication interface circuit figure of display device power supply for the utility model measuring apparatus.
Fig. 3 is the power circuit diagram of the utility model display device.
Embodiment
Fig. 1 is a theory diagram of the present utility model, comprise measuring apparatus and display device, measuring apparatus is installed in the distributed board outdoor, measuring apparatus is responsible for electric energy metrical and load control, display device is installed on the user within doors, display device is responsible for showing the data of measuring apparatus, measuring apparatus provides one road RS485 communication interface and display device to communicate, the RS485 communication interface also provides No. one direct supply to power to display device simultaneously, and the RS485 communication interface that measuring apparatus provides directly is connected to display device by the four-core telephone wire.
Fig. 2 is the DC power-supply circuit and the RS485 communication interface circuit figure of display device power supply for the utility model measuring apparatus, wherein VOUT is DC 10 ~ 28V, and diode D803, capacitor C 805, Transient Suppression Diode TVS802, Transient Suppression Diode TVS803, thermistor RT800, voltage dependent resistor (VDR) RV800 has formed the DC power-supply circuit of anti-external attack, this DC power-supply circuit is powered to display device, wherein, thermistor RT800 is used to prevent external circuit short circuit or overload, voltage dependent resistor (VDR) RV800 is used to suppress the spiking introduced by order wire, and diode D803, Transient Suppression Diode TVS802, Transient Suppression Diode TVS803 is used to prevent that outside misconnection from going into power supply and damaging front stage circuits.CN800 among the figure is the RS485 communication interface, and this communication interface directly is connected to display device by the four-core telephone wire.
Fig. 3 is the power circuit diagram of the utility model display device, wherein+CVCC is direct supply that measuring apparatus provided, and voltage dependent resistor (VDR) RV901 is used to suppress the spiking introduced by order wire, magnetic bead LB901, LB902 is used to suppress clutter interference, and thermistor RT903, voltage stabilizing diode D904, voltage stabilizing diode D905 and diode D903 have formed overcurrent and overvoltage protection circuit, behind the power supply process overcurrent and overvoltage protection circuit that measuring apparatus provides, again by electrochemical capacitor C911, capacitor C 912 filtering, and carry out the voltage stabilizing noise reduction process by late-class circuit, give the chip microprocessor and telecommunication circuit (the RS485 telecommunication circuit of the standard) power supply thereof of display device.
Claims (3)
1. split type single-phase electric energy meter, comprise measuring apparatus and display device, it is characterized in that described measuring apparatus is installed in the distributed board outdoor, described display device is installed on the user within doors, and described measuring apparatus provides one road RS485 communication interface and described display device to communicate.
2. split type single-phase electric energy meter according to claim 1 is characterized in that described RS485 communication interface also provides No. one direct supply to power to described display device simultaneously.
3. split type single-phase electric energy meter according to claim 1 is characterized in that the RS485 communication interface that described measuring apparatus provides directly is connected to described display device by the four-core telephone wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206516317U CN201886052U (en) | 2010-12-10 | 2010-12-10 | Split-type single-phase electric energy meter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206516317U CN201886052U (en) | 2010-12-10 | 2010-12-10 | Split-type single-phase electric energy meter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201886052U true CN201886052U (en) | 2011-06-29 |
Family
ID=44183599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206516317U Expired - Lifetime CN201886052U (en) | 2010-12-10 | 2010-12-10 | Split-type single-phase electric energy meter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201886052U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782565A (en) * | 2019-11-07 | 2020-02-11 | 上海庆科信息技术有限公司 | Wireless identification fingerprint device and intelligent lock equipment |
| CN113054723A (en) * | 2021-04-30 | 2021-06-29 | 上海器外文化科技有限公司 | Electric screwdriver and charging circuit thereof |
-
2010
- 2010-12-10 CN CN2010206516317U patent/CN201886052U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110782565A (en) * | 2019-11-07 | 2020-02-11 | 上海庆科信息技术有限公司 | Wireless identification fingerprint device and intelligent lock equipment |
| CN113054723A (en) * | 2021-04-30 | 2021-06-29 | 上海器外文化科技有限公司 | Electric screwdriver and charging circuit thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110629 |
|
| CX01 | Expiry of patent term |