CN215812953U - Small-volume prepayment electric energy meter with multiple communication modes - Google Patents
Small-volume prepayment electric energy meter with multiple communication modes Download PDFInfo
- Publication number
- CN215812953U CN215812953U CN202121642897.XU CN202121642897U CN215812953U CN 215812953 U CN215812953 U CN 215812953U CN 202121642897 U CN202121642897 U CN 202121642897U CN 215812953 U CN215812953 U CN 215812953U
- Authority
- CN
- China
- Prior art keywords
- circuit
- electric energy
- energy meter
- soc chip
- small
- 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
Images
Abstract
The utility model provides a small-volume prepayment electric energy meter with multiple communication modes, which comprises a power supply circuit, a sampling single circuit, a main circuit and a liquid crystal screen, wherein the main circuit comprises an SOC chip connected with the sampling circuit and the power supply circuit, the SOC chip is connected with a double wireless communication module, a magnetic latching relay, a copper piece temperature sensor and an ambient temperature sensor, the magnetic latching relay comprises a contact switch and a magnetic circuit, the power supply end of the magnetic circuit is connected with the power supply circuit, the control end of the magnetic circuit is connected with the SOC chip, and the contact switch is connected between the live wire inlet end and the live wire outlet end of the electric meter in series. According to the scheme, the WiFi and Bluetooth dual-mode communication module is adopted, WiFi and Bluetooth communication can be achieved in a smaller space, the SOC chip integrated with the metering function is adopted, and no metering chip is required to be additionally arranged; a small magnetic latching relay is arranged in the magnetic circuit, and 60A heavy current can be switched off; 2 kinds of temperature sensors are arranged in the device, so that the temperature of the copper part and the environment can be monitored in real time.
Description
Technical Field
The utility model belongs to the technical field of electric energy meters, and particularly relates to a small-size prepayment electric energy meter with multiple communication modes.
Background
With the development of economy and science and technology, smart power grids have been widely used in production and life. The intellectualization and miniaturization of the electric energy meter, which is an important component of the intelligent power grid, are always the development direction of the electric power metering industry.
The intellectualization of the electric energy meter is an inevitable requirement of a smart power grid. The electric energy metering equipment is required to have more accurate precision, more complete communication mode and more reliable safety. The implementation of these functions requires more complex hardware circuitry and software routines. Complex hardware circuitry, requiring a more bulky housing to provide the necessary layout space. The popularization of the smart grid is accompanied with the miniaturization requirement of the electric energy meter, so that the smart grid can be applied to various complex environments.
Therefore, the problem of contradiction exists between the intellectualization and the miniaturization of the electric energy meter. The existing electric energy meter can not achieve both the reduction of configuration and simplification of functions to achieve small volume, or the pursuit of sufficient intellectualization and stronger functions by sacrificing small volume.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the problems and provide a small-size prepayment electric energy meter with multiple communication modes.
In order to achieve the purpose, the utility model adopts the following technical scheme:
the utility model provides a little volume prepayment electric energy meter with multiple communication mode, includes power supply circuit, sampling single pass, main circuit and LCD screen, the main circuit including connect in sampling circuit and power supply circuit's SOC chip, the SOC chip be connected with two wireless communication modules, magnetic latching relay, copper spare temperature sensor and ambient temperature sensor, magnetic latching relay includes contact switch and magnetism circuit of inhaling, the power supply end of magnetism circuit connect in power supply circuit, the control end connect in the SOC chip, contact switch establish ties between ammeter live wire inlet wire end and live wire outlet.
In the small-size prepayment electric energy meter with multiple communication modes, the double wireless communication modules are connected to the SOC chip through the universal asynchronous receiving and transmitting transmitter, the copper piece temperature sensor is connected to the SOC chip through the serial communication bus, and the environment temperature sensor is connected to the SOC chip through the single bus.
In the small-size prepaid electric energy meter with multiple communication modes, the dual-wireless communication module is a WiFi & bluetooth dual-mode communication module.
In the small-sized prepaid electric energy meter with multiple communication modes, the electric energy meter shell is also provided with a wireless mode switching button connected with the SOC chip.
In the small-volume prepaid electric energy meter with multiple communication modes, the power supply circuit sequentially comprises a rectifier diode D1, a BUCK circuit and a DC/DC circuit.
In the small-size prepayment electric energy meter with multiple communication modes, the output end of the DC/DC circuit is connected to the SOC chip, the double wireless communication modules, the copper piece temperature sensor and the environment temperature sensor.
In the small-volume prepaid electric energy meter with multiple communication modes, the input end of the DC/DC circuit and the output end of the BUCK circuit are connected with the magnetic attraction circuit of the magnetic latching relay to supply power for the latching relay.
In the small-volume prepaid electric energy meter with multiple communication modes, the contact switch is connected to the SOC chip to feed back the switch state to the SOC chip.
In the small-volume prepayment electric energy meter with various communication modes, the copper part temperature sensor is arranged beside the copper part of the sampling circuit;
the environment temperature sensor is embedded at the lower end of the electric energy meter shell;
and the environment temperature sensor and the copper part temperature sensor are both coupled with the magnetic latching relay.
In the small-volume prepaid electric energy meter with multiple communication modes, a third communication interface is reserved on an outer shell of the electric energy meter and connected to the DC/DC circuit and the SOC chip.
The utility model has the advantages that:
1. by adopting a WiFi & Bluetooth dual-mode communication module, WiFi and Bluetooth communication can be realized in a smaller space;
2. an SOC chip integrated with a metering function is adopted, and no additional metering chip is needed;
3. a small magnetic latching relay is arranged in the magnetic circuit, and 60A heavy current can be switched off;
4. 2 kinds of temperature sensors are arranged in the device, so that the temperature of the copper part and the environment can be monitored in real time.
Drawings
FIG. 1 is a block diagram of the circuit structure of the small volume prepaid electric energy meter with various communication modes according to the present invention;
fig. 2 is a schematic diagram of an appearance structure of a small-sized prepaid electric energy meter with multiple communication modes according to the present invention.
Reference numerals: a power supply circuit 1; sampling a single channel 2; a liquid crystal screen 4; an SOC chip 5; a magnetic latching relay 6; a contact switch 61; a magnetic circuit 62; a dual wireless communication module 7; a live inlet 81; a live outlet 82; a copper piece temperature sensor 9; an ambient temperature sensor 10; a wireless mode switching button 11; a DC/DC circuit 12; a BUCK circuit 13; a third communication interface 14.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the face of the problem that prior art volume and function can't be taken into account, this scheme provides a little volume smart electric meter, and this electric energy meter will measure functions such as function, wiFi communication, bluetooth communication, temperature detection, liquid crystal display, heavy current cut-off, integrate among a section 2P's small-size shell, when realizing powerful function, compromise the miniaturization requirement, are applicable to more intelligent power supply scenes.
As shown in fig. 1-2, the small-volume prepaid electric energy meter with multiple communication modes disclosed in this embodiment includes a power supply circuit 1, a sampling single-path 2, a main circuit and a liquid crystal screen 4, wherein the main circuit includes an SOC chip 5 connected to the sampling circuit 2 and the power supply circuit 1, the SOC chip 5 is connected to a dual wireless communication module 7, a magnetic latching relay 6, a copper temperature sensor 9 and an ambient temperature sensor 10, the magnetic latching relay 6 includes a contact switch 61 and a magnetic circuit 62, a power supply end of the magnetic circuit 62 is connected to the power supply circuit 1, a control end is connected to the SOC chip 5, and the contact switch 61 is connected in series between a live wire inlet 81 and a live wire outlet 82 of the electric meter. The SOC chip 5 outputs an analog PWM wave to control the magnetic latching relay 6 to be switched on and off, when the magnetic latching relay 6 is switched on, the live wire inlet end 81 is switched on with the live wire outlet end 82, and when the magnetic latching relay is switched off, the live wire inlet end 81 is switched off with the live wire outlet end 82. The contact switch 61 is preferably connected to the SOC chip 5 to feed back the switch state to the SOC chip 5.
The scheme abandons the traditional mode of a main chip and a metering chip, optimizes and adopts the SOC chip 5 integrating the metering function and the processing function, simplifies the hardware scheme, and improves the reliability and the operating efficiency. In addition, a magnetic latching relay capable of disconnecting large current is arranged in the scheme, 60A large current can be disconnected, the load capacity of a common family is met, and safe power supply is ensured. When the electric energy meter detects that the power supply is abnormal, the power supply can be quickly cut off through the magnetic latching relay. Meanwhile, when the prepayment cost is insufficient, the power-off function can be realized by controlling the magnetic latching relay, namely, the magnetic latching relay can not only provide the prepayment arrearage power-off function, but also realize the automatic power-off function of abnormal current.
The sampling circuit 2 comprises a voltage sampling circuit and a current sampling circuit, and the voltage sampling circuit and the current sampling circuit respectively input a current signal and a voltage signal into the SOC chip 5 after voltage division through an external resistor.
The power supply circuit 1 is used for externally connecting 220V alternating current voltage, performing half-wave rectification through a rectifying diode D1, converting the alternating current voltage into 12V direct current voltage through a high-voltage BUCK circuit 13, and converting the 12V direct current voltage into 3.3V direct current voltage through a DC/DC circuit 12. The 12V voltage is used for supplying the magnetic field generating means 6 in addition to the DC/DC circuit 12. The 3.3V voltage is simultaneously supplied to the SOC chip 5, the EEPROM (electrified erasable programmable read-only memory), the double wireless communication module 7, the copper piece temperature sensor 9 and the environment temperature sensor 10 for power supply.
The EEPROM and the copper temperature sensor 9 are connected to the SOC chip 5 through a serial communication bus (iicenter-Integrated Circuit).
The dual wireless communication module 7 is connected to the SOC chip 5 through the UART. The UART can convert data to be transmitted between serial communication and parallel communication, and various mode requirements of the scheme of a double-wireless mode are met.
The environment temperature sensor 10 is connected to the SOC chip 5 through the single bus 1-wire, the single bus 1-wire adopts a single signal line, not only transmits clock but also transmits data, and the data transmission is bidirectional, so that the system has the advantages of saving I/O interface lines, being simple in resource structure, low in cost, convenient for bus expansion and maintenance and the like.
Specifically, the dual wireless communication module 7 is a WiFi & bluetooth dual mode communication module. And the electric energy meter shell is also provided with a wireless mode switching button 11 connected with the SOC chip 5. Can switch to only opening wifi through wireless mode switch button 11, only open the bluetooth or all close or all open, can select according to customer's needs. The advantages of energy conservation, interference reduction and the like are achieved. Among the current small-size smart electric meter, because watchcase space restriction, be difficult to 2 kinds of wireless communication modes of compatibility, even can be compatible, also can influence the communication effect because of the mutual interference of signal. This scheme is through adopting the module of wiFi & bluetooth bimodulus communication, and control chip and antenna are shared in wiFi communication and bluetooth communication, when reducing the volume, still solved signal interference's problem.
The copper piece temperature sensor 9 is arranged beside the copper piece of the sampling circuit 2; the environment temperature sensor 10 is embedded at the lower end of the shell of the electric energy meter; the environment temperature sensor 10 and the copper part temperature sensor 9 are both coupled with the magnetic latching relay 6, can monitor the temperature of the copper part and the environment in real time, and can cut off power supply in time by controlling the magnetic latching relay 6 when the environment temperature rises sharply (such as fire) or a circuit fails (such as overload). The shell of the electric energy meter can be further provided with a power-off reason indicating lamp, for example, the power-off reason indicating lamp is red due to high temperature power-off, green due to owing fee power-off, yellow due to excessive current power-off and normal display.
Further, a third communication interface 14 is preferably reserved on the housing of the electric energy meter, and the third communication interface 14 is connected to the DC/DC circuit and the SOC chip 5 and is used for connecting an external communication module to the smart meter. If the two original communication modes can not meet the user requirements, the external communication module can be connected through the third communication interface 14.
The specific embodiments described herein are merely illustrative of the spirit of the utility model. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the utility model as defined in the appended claims.
Although the power supply circuit 1 is used more herein; sampling a single channel 2; a liquid crystal screen 4; an SOC chip 5; a magnetic latching relay 6; a contact switch 61; a magnetic circuit 62; a dual wireless communication module 7; a live inlet 81; a live outlet 82; a copper piece temperature sensor 9; an ambient temperature sensor 10; a wireless mode switching button 11; a DC/DC circuit 12; a BUCK circuit 13; third communication interface 14, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A small-volume prepayment electric energy meter with multiple communication modes comprises a power circuit (1), a sampling single circuit (2), a main circuit and a liquid crystal screen (4), characterized in that the main circuit comprises an SOC chip (5) connected with the sampling circuit (2) and the power circuit (1), the SOC chip (5) is connected with a double wireless communication module (7), a magnetic latching relay (6), a copper piece temperature sensor (9) and an environmental temperature sensor (10), the magnetic latching relay (6) comprises a contact switch (61) and a magnetic circuit (62), the power supply end of the magnetic circuit (62) is connected with the power supply circuit (1), the control end is connected with the SOC chip (5), the contact switch (61) is connected between a live wire inlet end (81) and a live wire outlet end (82) of the electric meter in series.
2. The small-volume prepaid electric energy meter with multiple communication modes according to claim 1, wherein the dual wireless communication module (7) is connected to the SOC chip (5) through a universal asynchronous receiver transmitter, the copper temperature sensor (9) is connected to the SOC chip (5) through a serial communication bus, and the ambient temperature sensor (10) is connected to the SOC chip (5) through a single bus.
3. The small-sized prepaid electric energy meter with multiple communication modes according to claim 2, wherein the dual wireless communication module (7) is a WiFi & bluetooth dual-mode communication module.
4. The small-volume prepaid electric energy meter with multiple communication modes according to claim 3, characterized in that the electric energy meter housing further has a wireless mode switching button (11) connected to the SOC chip (5).
5. The small-volume prepaid electric energy meter with multiple communication modes according to claim 3, characterized in that the power circuit (1) comprises a rectifier diode D1, a BUCK circuit (13) and a DC/DC circuit (12) in sequence.
6. The small-volume prepaid electric energy meter with multiple communication modes according to claim 5, characterized in that the output of the DC/DC circuit is connected to the SOC chip (5), the dual wireless communication module (7), the copper temperature sensor (9) and the ambient temperature sensor (10).
7. The small-volume prepaid electric energy meter with multiple communication modes according to claim 6, characterized in that the input terminal of the DC/DC circuit and the output terminal of the BUCK circuit are connected to the magnetic attraction circuit (62) of the magnetic latching relay (6) to supply power to the latching relay (6).
8. The small-volume prepaid electric energy meter with multiple communication modes according to claim 7, characterized in that the contact switch (61) is connected to the SOC chip (5) to feed back the switch state to the SOC chip (5).
9. The small-volume prepaid electric energy meter with multiple communication modes according to claim 8, characterized in that the copper temperature sensor (9) is placed beside the copper of the sampling circuit (2);
the environment temperature sensor (10) is embedded at the lower end of the electric energy meter shell;
the environment temperature sensor (10) and the copper piece temperature sensor (9) are both coupled with the magnetic latching relay (6).
10. The small-volume prepaid electric energy meter with multiple communication modes according to claim 9, characterized in that a third communication interface (14) is reserved on the electric energy meter housing, and the third communication interface (14) is connected to the DC/DC circuit and the SOC chip (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642897.XU CN215812953U (en) | 2021-07-19 | 2021-07-19 | Small-volume prepayment electric energy meter with multiple communication modes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121642897.XU CN215812953U (en) | 2021-07-19 | 2021-07-19 | Small-volume prepayment electric energy meter with multiple communication modes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215812953U true CN215812953U (en) | 2022-02-11 |
Family
ID=80182944
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121642897.XU Active CN215812953U (en) | 2021-07-19 | 2021-07-19 | Small-volume prepayment electric energy meter with multiple communication modes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215812953U (en) |
-
2021
- 2021-07-19 CN CN202121642897.XU patent/CN215812953U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102236331A (en) | Power monitoring apparatus for household appliance | |
| CN102593951B (en) | Single-user power utilization field intelligent management device with prepayment function | |
| CN204597127U (en) | Close-coupled socket | |
| CN215812953U (en) | Small-volume prepayment electric energy meter with multiple communication modes | |
| CN101561299A (en) | Modularized metering device | |
| CN204886393U (en) | A power control system for intelligent gas meter | |
| CN207743981U (en) | A kind of intelligent domestic gateway | |
| CN106057588B (en) | Air switch, equipment with intelligent measurement and system | |
| CN205319804U (en) | On -off system and electronic equipment | |
| CN209434524U (en) | A kind of intelligent socket | |
| CN107219394B (en) | Electric energy metering system | |
| CN201503447U (en) | Modularly assembled electric power metering device | |
| CN207977780U (en) | Air switch with monitoring and remote control function | |
| CN201397165Y (en) | Multifunctional metering device | |
| CN104577538A (en) | Socket based on ZIGBEE wireless communication and compact socket | |
| CN207198200U (en) | A kind of electric energy metered system and its electric power meter | |
| CN101561300A (en) | Multifunctional metering device | |
| CN206163425U (en) | Take intellectual detection system's air switch , equipment and system | |
| CN201397164Y (en) | Modular metering device for water, electricity or gas | |
| CN201397351Y (en) | Modularized assembled electric power metering device | |
| CN211293061U (en) | External electric power metering device based on LoRaWAN communication of antenna | |
| CN201397350Y (en) | Modularized assembled electric power metering device | |
| CN218240306U (en) | Load state detection circuit, intelligent control device and electronic equipment | |
| CN213041919U (en) | NB-IoT Internet of things electric meter | |
| CN201392365Y (en) | Electricity metering device in modular assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |