CN212646778U - Indoor display unit of split type intelligent electric energy meter - Google Patents
Indoor display unit of split type intelligent electric energy meter Download PDFInfo
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- CN212646778U CN212646778U CN202020213139.5U CN202020213139U CN212646778U CN 212646778 U CN212646778 U CN 212646778U CN 202020213139 U CN202020213139 U CN 202020213139U CN 212646778 U CN212646778 U CN 212646778U
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Abstract
The utility model provides an indoor display element of split type intelligent electric energy meter, this display element include host computer and auxiliary engine, host computer and auxiliary engine pass through the data line and connect. The utility model discloses to wireless communication modules such as mainstream RF, LORA, only need to regard as the auxiliary engine with the cell-phone adapter, change corresponding communication module on the host computer and be unanimous with the electric energy meter access mode; aiming at different carrier coupling modes of the electric energy meter, the auxiliary machine selects one of two carrier coupling circuits, and the host machine carrier communication modulation and demodulation module is matched with the coupling mode of the electric energy meter, so that the development period is shortened, and the production cost is effectively reduced.
Description
Technical Field
The utility model relates to an intelligent instrument field, concretely relates to indoor display element of split type intelligent electric energy meter.
Background
The traditional indoor display unit comprises an MCU (microprogrammed control Unit), a keyboard, a liquid crystal display and a power carrier module which are connected with the MCU, wherein the power carrier module of the intelligent electric energy meter and the power carrier module of the indoor display unit are connected to a power line, and data transmission is carried out between the metering unit and the indoor display unit in a carrier communication mode.
The indoor display unit integrates the power carrier module, and higher plug-in components such as a coupling transformer, a coupling capacitor and the like are inevitably arranged, so that the whole machine is large in size and inconvenient to operate. In addition, the existing electric energy meters are diversified in form, corresponding access modules need to be replaced for matching with corresponding electric energy meters, various indoor display units are developed, and the development period and the production cost are increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a split type intelligent electric energy meter indoor display element to current indoor display element is bulky, updates problem with high costs. For the condition of diversification of the electric energy meter, when the electric energy meter is accessed in a wired mode, the carrier coupling mode is different, and only the carrier communication modulation and demodulation module of the host needs to be replaced to enable the carrier communication modulation and demodulation module to be consistent with the access mode of the electric energy meter; when the electric energy meter is wirelessly accessed, a universal mobile phone charger is directly configured for a user to serve as a secondary machine, the wireless communication module of the host machine is updated to enable the wireless communication module to be matched with the access mode of the electric energy meter, the updating of the indoor display unit is completed, the development period is shortened, and the production cost is effectively reduced.
The technical scheme of the utility model is that:
a split type intelligent electric energy meter indoor display unit comprises a host and an auxiliary machine, wherein the host and the auxiliary machine are connected through a data line; when the electric meter is accessed in a wireless mode, the auxiliary machine adopts a power adapter and is connected with a live wire L and a zero line N of commercial power; the host comprises an MCU, a keyboard connected with the MCU, a wireless communication module, a liquid crystal display and a power module, wherein the wireless communication module is matched with an electric energy meter in an access mode.
Further, the wireless communication module includes RF, lora and NBlot communication modules.
Further, the power adapter adopts a 5V mobile phone charger.
Further, the size of the mainframe is 4 inches.
A split type intelligent electric energy meter indoor display unit comprises a host and an auxiliary machine, wherein the host and the auxiliary machine are connected through a data line; when the electric meter is accessed in a carrier coupling mode, the auxiliary machine comprises a power supply circuit and a carrier coupling circuit, the inputs of the power supply circuit and the carrier coupling circuit are respectively connected with a live wire L and a zero line N of commercial power, and the outputs of the power supply circuit and the carrier coupling circuit are connected with the host through data lines; the host comprises an MCU, a keyboard connected with the MCU, a carrier communication modulation and demodulation module, a liquid crystal display and a power supply module, wherein the carrier communication modulation and demodulation module is matched with a carrier coupling access mode of the electric energy meter.
Further, the model of the carrier communication modem module is ST 8500.
Furthermore, the power circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of the commercial power, and the step-down transformer outputs 12V power to be supplied to the host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the carrier signal is coupled to a 12V power supply signal and is connected with the host through the same data line.
Furthermore, the power circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of the commercial power, and the step-down transformer outputs 12V power to be supplied to the host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the 12V power supply signal and the carrier coupling signal are respectively connected with the host through data lines.
Further, the size of the mainframe is 4 inches.
The utility model discloses to wireless communication modules such as RF, LORA of mainstream, only need with the cell-phone adapter as the auxiliary engine, change on the host computer corresponding communication module unanimous with electric energy meter access mode can, shortened development time greatly.
The utility model discloses different to electric energy meter carrier coupling mode, one of two kinds of carrier coupling circuit is selected to the auxiliary engine, and host computer carrier communication modem module and electric energy meter coupling mode phase-match have reduced development cycle, effectively reduce manufacturing cost.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 is an application schematic diagram of the indoor display unit of the split intelligent electric energy meter of the present invention.
Fig. 2 is one of the schematic structural diagrams of the present invention.
Fig. 3 is a second schematic structural diagram of the present invention.
Fig. 4 is a schematic structural diagram of the indoor display unit auxiliary machine of the present invention.
Fig. 5 is a second schematic structural diagram of the indoor display unit auxiliary machine of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present invention have been illustrated in the accompanying drawings, it is to be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein.
As shown in fig. 1, the LN line supplies power to the electric load through a load switch inside the smart electric energy meter (metering unit). The indoor display unit secondary machine is connected to the LN line of the electric load end, and the indoor display unit main machine is connected to the secondary machine through the data line. The intelligent electric meter is installed in the distribution box, the auxiliary machine of the indoor display unit of the split intelligent electric meter is installed on the indoor socket of a user, and the main machine transmits carrier coupling signals and power signals through a data line, so that the intelligent electric meter is plug and play and is convenient to charge like a mobile phone.
A display unit in a split type intelligent electric energy meter comprises a main machine and an auxiliary machine, wherein the main machine and the auxiliary machine are connected through a data line; the main machine and the auxiliary machine can supply power mutually, and when an LN line at an electric load end is electrified, a power supply circuit of the auxiliary machine converts 220V alternating current into 12V direct current to supply to the main machine. The host computer keyboard inputs short codes or rechargeable codes, the MCU outputs data to the communication circuit, and the communication circuit transmits the data to the intelligent electric meter through the power line. When the electricity charge of the user is insufficient, the load switch of the intelligent electric meter is cut off, and the LN line at the electricity load end is dead, the battery power supply of the main machine is started to provide temporary power supply for the main machine and the auxiliary machine. And communication with the intelligent electric meter is guaranteed.
As shown in fig. 4, the data line is a 2-core line, and the signal line is coupled to the ground at 12V plus or minus; the method specifically comprises the following steps: when the ammeter is accessed in a carrier coupling mode, the power supply circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of commercial power, and the step-down transformer outputs 12V power to be supplied to a host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the carrier signal is coupled to a 12V power supply signal and is connected with the host through the same data line.
As shown in fig. 5, the data line is a 4-core line including 12V, ground, and signal line positive and negative; the method specifically comprises the following steps: when the ammeter is accessed in a carrier coupling mode, the power supply circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of commercial power, and the step-down transformer outputs 12V power to be supplied to a host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the 12V power supply signal and the carrier coupling signal are respectively connected with the host through data lines.
The indoor display unit host machine only comprises the MCU, the liquid crystal, the backlight, the keyboard, the indicator light, the communication circuit and the battery power supply, and does not comprise a plug-in device which is raised in the coupling circuit, so that the host machine can be light and thin. The data line interface comprises a power line and a coupling signal, and the coupling signal and the power line can be shared.
When the data line interface receives signals, the coupling signals are demodulated through the communication circuit and then are sent to the MCU, and the MCU liquid crystal displays information.
The data line interface sends signals, the MCU lights the backlight, the liquid crystal and the indicator light according to the information read from the keyboard, transmits data to the communication circuit, and the communication circuit modulates and amplifies the data and sends the data to the electric energy meter through the data line interface. When the user arrears to open the brake, the 12V power supply of the data line interface is powered off, the battery power supply is started, one path of power supply is used for MCU to work, and the other path of power supply is used for converting and boosting the voltage to 12V power and supplying the voltage to the carrier coupling circuit.
When the wireless communication module is used, a coupling circuit is not needed, namely, the indoor display unit auxiliary machine can be replaced by a mobile phone charger, and the universality is high.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (9)
1. The utility model provides an indoor display element of split type intelligent ammeter which characterized in that: the display unit comprises a host and an auxiliary machine, wherein the host and the auxiliary machine are connected through a data line; when the electric meter is accessed in a wireless mode, the auxiliary machine adopts a power adapter and is connected with a live wire L and a zero line N of commercial power; the host comprises an MCU, a keyboard connected with the MCU, a wireless communication module, a liquid crystal display and a power module, wherein the wireless communication module is matched with an electric energy meter in an access mode.
2. The indoor display unit of a split intelligent electric energy meter according to claim 1, wherein: the wireless communication modules include RF, lora, and NBlot communication modules.
3. The indoor display unit of a split intelligent electric energy meter according to claim 1, wherein: the power adapter adopts a 5V mobile phone charger.
4. The indoor display unit of a split intelligent electric energy meter according to claim 1, wherein: the mainframe size was 4 inches.
5. The utility model provides an indoor display element of split type intelligent ammeter which characterized in that: the display unit comprises a host and an auxiliary machine, wherein the host and the auxiliary machine are connected through a data line; when the electric meter is accessed in a carrier coupling mode, the auxiliary machine comprises a power supply circuit and a carrier coupling circuit, the inputs of the power supply circuit and the carrier coupling circuit are respectively connected with a live wire L and a zero line N of commercial power, and the outputs of the power supply circuit and the carrier coupling circuit are connected with the host through data lines; the host comprises an MCU, a keyboard connected with the MCU, a carrier communication modulation and demodulation module, a liquid crystal display and a power supply module, wherein the carrier communication modulation and demodulation module is matched with a carrier coupling access mode of the electric energy meter.
6. The indoor display unit of a split intelligent electric energy meter according to claim 5, wherein: the model of the carrier communication modulation and demodulation module is ST 8500.
7. The indoor display unit of a split intelligent electric energy meter according to claim 5, wherein: the power circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of commercial power, and the step-down transformer outputs 12V power to supply to the host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the carrier signal is coupled to a 12V power supply signal and is connected with the host through the same data line.
8. The indoor display unit of a split intelligent electric energy meter according to claim 5, wherein: the power circuit comprises a step-down transformer, the carrier coupling circuit comprises a coupling transformer and a coupling capacitor, the input end of the step-down transformer is connected with a live line L and a zero line N of commercial power, and the step-down transformer outputs 12V power to supply to the host; the input end of the coupling transformer is connected with a live wire L and a zero line N of commercial power, and the output end of the coupling transformer outputs a carrier signal to the host after passing through the coupling capacitor; the 12V power supply signal and the carrier coupling signal are respectively connected with the host through data lines.
9. The indoor display unit of a split intelligent electric energy meter according to claim 5, wherein: the mainframe size was 4 inches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202020213139.5U CN212646778U (en) | 2020-02-26 | 2020-02-26 | Indoor display unit of split type intelligent electric energy meter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020213139.5U CN212646778U (en) | 2020-02-26 | 2020-02-26 | Indoor display unit of split type intelligent electric energy meter |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114510204A (en) * | 2021-12-29 | 2022-05-17 | 宁波三星智能电气有限公司 | Indoor display unit data synchronization method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114510204A (en) * | 2021-12-29 | 2022-05-17 | 宁波三星智能电气有限公司 | Indoor display unit data synchronization method |
| CN114510204B (en) * | 2021-12-29 | 2023-09-01 | 宁波三星智能电气有限公司 | Indoor display unit data synchronization method |
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