CN212433263U

CN212433263U - Single-phase intelligent electric energy meter for monitoring UPS power supply

Info

Publication number: CN212433263U
Application number: CN202021184775.6U
Authority: CN
Inventors: 吴超; 袁耀祖; 马涛; 张兴兵; 康振兴; 尹永理; 张斌
Original assignee: Ante Meter Group Co ltd
Current assignee: Ante Meter Group Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2021-01-29
Anticipated expiration: 2030-06-23

Abstract

The utility model discloses a single-phase intelligent electric energy meter for monitoring UPS power supply, which has the technical scheme key points that the single-phase intelligent electric energy meter comprises an electric energy meter body, wherein a UPS power supply operation module connected with the UPS power supply, a UPS power supply monitoring module connected with the UPS power supply operation module, a main control MCU module connected with the UPS power supply monitoring module, an NB-IoT remote communication module and a local maintenance module which are respectively connected with the main control MCU module are arranged in the electric energy meter shell; the UPS power supply monitoring module comprises a metering monitoring module and a UPS operation information interaction module. The utility model aims to monitor UPS power in service behavior, acquire UPS power operation information simultaneously, carry out local maintenance through bluetooth or infrared mode, improved work efficiency, measurement accuracy is high, stability is good, the overload capacity is strong, the reliability is high, remove the thing networking through NB-IoT and monitor data and report and copy, the network deployment is simple and convenient, communication rate is high, the distance is far away, can provide advanced, reliable measuring tool for the electric power department.

Description

Single-phase intelligent electric energy meter for monitoring UPS power supply

Technical Field

The utility model relates to an electric energy meter technical field, more specifically the saying so, it relates to a single-phase intelligent electric energy meter for monitoring of UPS power.

Background

An electric energy meter is an instrument for measuring electric energy, also called watt-hour meter, fire meter, electric energy meter, kilowatt-hour meter, and refers to an instrument for measuring various electric quantities. An electric energy meter is a meter for measuring the consumption of electric energy by electric equipment. According to the phase fraction, the electric energy meter is divided into a single-phase electric energy meter and a three-phase electric energy meter. At present, manufacturers for producing electronic electric energy meters are numerous and have different advantages, household users are basically single-phase meters, and industrial power users are generally three-phase electric energy meters.

At present, in order to ensure the stability of power supply, a UPS (uninterruptible power supply) is used, when the mains supply input is normal, the UPS stabilizes the mains supply and supplies the regulated mains supply to a load for use, and the UPS is an alternating current type voltage stabilizer and also charges a battery in the device; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies the direct current electric energy of the battery to the load by a method of switching and converting the inverter to continuously supply 220V alternating current to the load, so that the load keeps normal work and the software and hardware of the load are protected from being damaged. UPS devices typically provide protection against either excessive voltage or insufficient voltage. At present, a monitoring scheme for the UPS is that a short-distance copying controller monitors, and a set of unified system equipment does not exist to finish remote monitoring, so that monitoring and regulation are inconvenient.

Disclosure of Invention

The utility model aims to the deficiencies in the prior art exist, the utility model aims to provide a single-phase intelligent ammeter for monitoring of UPS power, monitor UPS power in service behavior, acquire UPS power operation information simultaneously, carry out local maintenance through bluetooth or infrared mode, work efficiency is improved, measurement accuracy is high, good stability, overload capacity is strong, the reliability is high, it reports and reads to remove the thing networking through NB-IoT and carry out monitoring data, the network deployment is simple and convenient, communication rate is high, the distance is far away, can provide advanced, reliable measuring tool for the electric power department.

In order to achieve the above purpose, the utility model provides a following technical scheme:

a single-phase intelligent electric energy meter for monitoring a UPS (uninterrupted Power supply) power supply comprises an electric energy meter body, wherein a UPS power supply operation module connected to the UPS power supply, a UPS power supply monitoring module connected to the UPS power supply operation module, a main control MCU (microprogrammed control unit) module connected to the UPS power supply monitoring module, an NB-IoT (NB-IoT) remote communication module and a local maintenance module which are respectively connected to the main control MCU module are arranged in an electric energy meter shell;

the UPS power supply monitoring module comprises a metering monitoring module and a UPS operation information interaction module which are respectively connected with the UPS power supply operation module,

the signal output end of the metering monitoring module is connected with the signal input end of the main control MCU module and is used for monitoring the power utilization information of the UPS and transmitting the power utilization signal to the main control MCU module;

the signal output end of the UPS operation information interaction module is connected to the signal input end of the main control MCU module and is used for acquiring interaction information of the UPS power supply operation module and transmitting an interaction signal to the main control MCU module;

the main control MCU module is used for receiving the power utilization information and the interaction information of the UPS power supply monitoring module and processing the power utilization information and the interaction information into UPS power supply monitoring data for output;

the data communication end of the NB-IoT remote communication module is connected with and communicates with an I/O end of the main control MCU module, UPS power supply monitoring data are received by the NB-IoT remote communication module and output to an external server, and the regular reporting and the remote data acquisition of the UPS power supply monitoring data are realized;

the output end of the local maintenance module is connected with an I/O end of the main control MCU module, information of an external communication channel is transmitted to the main control MCU through the local maintenance module, and local interaction is carried out on the information and the UPS power supply monitoring module.

Preferably, the data input end of the metering monitoring module is respectively connected with a UPS voltage sampling module and a UPS current sampling module, and data acquisition and output of the UPS power supply operation module are carried out through the UPS voltage sampling module and the UPS current sampling module.

Preferably, the UPS power supply operation module includes a voltage stabilizing module and a voltage reduction conversion module, an input end of the voltage stabilizing module is connected to an output end of the UPS power supply, an output end of the voltage stabilizing module is connected to an output port of the voltage stabilizing power supply, an input end of the voltage reduction conversion module is connected to an output port of the voltage stabilizing power supply, and an output end of the voltage reduction conversion module is connected to an output port.

Preferably, the local maintenance module is composed of any one or a combination of several of Wi-Fi, a Bluetooth wireless communication module and an infrared communicator.

Preferably, the bluetooth wireless communication module includes bluetooth chip and LDO voltage adjustment module, UPS power module operation module's output is connected to LDO voltage adjustment module's power input end, bluetooth chip's an IO end is connected to LDO voltage adjustment module's output, a IO end of master control MCU module is connected to bluetooth chip's signal transmission end, bluetooth chip is the bluetooth chip module of UA287QBLE model.

Preferably, the UPS operation information interaction module comprises an RS-485 interface chip and an RS-485 communication line, a signal transmission end of the RS-485 interface chip is connected with an I/O end of the main control MCU module, a power input end of the RS-485 interface chip is connected with an output end of the UPS power supply operation module, and the RS-485 interface chip is an RS-485 interface chip module of HD588EESA model.

Preferably, the master control MCU module is connected with a relay driver chip, the power input end of the relay driver chip is connected with the output end of the UPS power module, the control end of the relay driver chip is connected with an I/O end of the master control MCU module, and the relay driver chip is a relay of BL8023D model.

Preferably, the output end of the metering monitoring module is connected with an LCD module.

Preferably, the NB-IoT remote communication module includes an NB-IoT chip and a communication module weak current module.

Preferably, the master control MCU module is an MCU chip of RN8213 type.

The utility model has the advantages of that:

the utility model discloses a single-phase power supply monitoring function is used for monitoring UPS power supply operation operating condition and power consumption information, through the new generation wireless communication technique of narrowband thing networking NB-IoT, with information on-line transmission to the high in the clouds, realizes the real-time supervision equipment operational aspect.

The USP is an uninterruptible power supply containing an energy storage device, and is mainly used for providing uninterruptible power supply for equipment with higher requirements on stability of part of power supplies.

A metering monitoring module: monitoring UPS power consumption information, main data collection includes: voltage, current, power, etc.; UPS operation information interaction module: UPS power supply information is collected through an RS485 communication channel; a local maintenance module: an external communication channel can be provided to perform local interaction with the UPS power supply monitoring module for daily maintenance; a remote communication module: and a wide area NB-IoT internet of things communication network is adopted to realize the regular reporting or remote data acquisition of the UPS power supply monitoring data.

Drawings

FIG. 1: is a schematic block diagram of a UPS power supply monitoring module of the utility model;

FIG. 2: is a circuit schematic diagram of the main control MCU module of the utility model;

FIG. 3: is a circuit schematic diagram of the UPS power supply module of the utility model;

FIG. 4: is a circuit schematic diagram of the bluetooth wireless communication module of the utility model;

FIG. 5: is a circuit schematic diagram of the UPS operation information interaction module of the utility model;

FIG. 6: is a circuit schematic diagram of the relay of the utility model;

FIG. 7: is a circuit schematic diagram of the metering monitoring module of the utility model;

FIG. 8: is a circuit schematic diagram of the LCD module of the present invention;

FIG. 9: is a circuit schematic diagram of the NB-IoT chip of the present invention;

FIG. 10: is a circuit schematic diagram of the communication module weak current module of the utility model;

FIG. 11: is a circuit schematic diagram of the UPS current sampling module of the utility model;

FIG. 12: is a circuit schematic diagram of the UPS voltage sampling module of the utility model;

FIG. 13: is a circuit schematic diagram of the circulation display switch of the utility model;

FIG. 14: is a circuit schematic diagram of the program module of the present invention;

FIG. 15: is a schematic diagram of the operation flow of the UPS power supply system of the utility model;

in the figure: 1. a main control MCU module; 2. a metering monitoring module; 3. an NB-IoT remote communication module; 4. a local maintenance module; 5. the UPS operation information interaction module; 6. a UPS voltage sampling module; 7. a UPS current sampling module; 8. a UPS power supply operation module; 9. a voltage stabilization module; 10. the voltage reduction conversion module, 11 and the Bluetooth chip; 12. an LDO voltage adjustment module; 13. an RS-485 interface chip; 14. a relay driver chip; 15. an LCD chip.

Detailed Description

Referring to fig. 1 to 15, a single-phase intelligent electric energy meter for monitoring a UPS power supply according to the present embodiment includes an electric energy meter body, and a UPS power supply operation module 8 connected to a UPS power supply, a UPS power supply monitoring module connected to the UPS power supply operation module 8, a main control MCU module 1 connected to the UPS power supply monitoring module, an NB-IoT remote communication module 3 and a local maintenance module 4 connected to the main control MCU module 1, respectively, are disposed in the electric energy meter housing; the UPS power supply monitoring module comprises a metering monitoring module 2 and a UPS operation information interaction module 5 which are respectively connected to a UPS power supply operation module 8, wherein the signal output end of the metering monitoring module 2 is connected to the signal input end of the main control MCU module 1 and is used for monitoring the power utilization information of the UPS power supply and transmitting the power utilization signal to the main control MCU module 1; the signal output end of the UPS operation information interaction module 5 is connected to the signal input end of the main control MCU module 1 and is used for acquiring interaction information of the UPS power supply operation module 8 and transmitting an interaction signal to the main control MCU module 1; the main control MCU module 1 is used for receiving the power utilization information and the interaction information of the UPS power monitoring module and processing the information into UPS power monitoring data for output; the data communication end of the NB-IoT remote communication module 3 is connected with and communicates with an I/O end of the main control MCU module 1, UPS power supply monitoring data is received by the NB-IoT remote communication module 3 and output to an external server, and the regular reporting and the remote data acquisition of the UPS power supply monitoring data are realized; the output end of the local maintenance module 4 is connected with an I/O end of the main control MCU module 1, information of an external communication channel is transmitted to the main control MCU through the local maintenance module 4, and local interaction is carried out between the local maintenance module 4 and the UPS power supply monitoring module.

The data input end of the metering monitoring module 2 is respectively connected with a UPS voltage sampling module 6 and a UPS current sampling module 7, and data acquisition and output of the UPS power supply operation module 8 are carried out through the UPS voltage sampling module 6 and the UPS current sampling module 7.

The utility model discloses in, UPS power monitoring module is used for monitoring UPS power module's running operating condition and power consumption information, through the new generation wireless communication technique of narrowband thing networking NB-IoT, with information through last transmission to high in the clouds, the real-time supervision equipment behavior.

The metering monitoring module 2: monitoring UPS power module power consumption information, main data collection includes: the input and transmission of information such as voltage, current, power and the like are carried out through the UPS voltage acquisition module 6 and the UPS current sampling module 7.

The UPS operation information interaction module 5: and collecting the interaction information of the UPS power supply operation module 8.

Local maintenance module 4: the wireless copper core wire module capable of providing an external communication channel is locally interacted with the UPS power supply monitoring module for daily maintenance.

A remote communication module: and a wide area NB-IoT internet of things communication network is adopted to realize the regular reporting or remote data acquisition of the UPS power supply monitoring data.

The UPS power supply operation module 8 comprises a voltage stabilizing module 9 and a voltage reduction conversion module 10, wherein the input end of the voltage stabilizing module 9 is connected with the UPS power supply, the output end of the voltage stabilizing module 9 is connected with a voltage stabilizing power supply output port, the input end of the voltage reduction conversion module 10 is connected with the voltage stabilizing power supply output port, and the output end of the voltage reduction conversion module is connected with a voltage reduction power supply output.

In the present invention, the UPS power operation module 8 includes a first bidirectional zener diode, two zener diodes, a DM8231T zener module, an iron core coil, a TPS54231 buck conversion module, two diodes, four polar capacitors, an inductance coil, and twelve non-polar capacitors, wherein the anode of the first zener diode is connected to the UPS power source, and the cathode of the first zener diode is connected to the SW port of the DM8231T zener module; the output end of the first voltage stabilizing diode is respectively connected with 1 polar capacitor and a non-polar capacitor in parallel, one end of the first bidirectional voltage stabilizing diode is connected with a mains supply, and the other end of the first bidirectional voltage stabilizing diode is grounded; the input port of the iron core coil is connected with a GND port of the DM8231T voltage stabilizing module, the output ports are respectively connected with a voltage stabilizing power output port (V12) and a VIN port of the TPS54231 voltage reduction conversion module, the output end of the iron core coil is respectively connected with 2 polar capacitors and non-polar capacitors in parallel, the anode of the second voltage stabilizing diode is connected with the GND port of the TPS54231 voltage reduction conversion module, and the cathode of the second voltage stabilizing diode is connected with the input port of the inductance coil; the output port of the inductance coil is connected to a voltage reduction power output port (VCU); the output end of the DM8231T voltage stabilizing module is respectively connected with 2 nonpolar capacitors in parallel, and the VDD port and the GND port of the DM8231T voltage stabilizing module are respectively connected with the cathode of a diode; the output end of the inductance coil is respectively connected with 1 polar capacitor and a non-polar capacitor in parallel; the SS port of the TPS54231 buck conversion module is connected with a non-polar capacitor; a non-polar capacitor is connected in parallel between the VIN port and the EN port of the TPS54231 buck conversion module; the COMP port of the TPS54231 buck conversion module is connected with 2 nonpolar capacitors in parallel; and a non-polar capacitor is connected in parallel between the BOOT port and the PH port of the TPS54231 buck conversion module.

In the invention, when the small switch is turned on, the current of the UPS is input into the UPS operation module 8, and the DM8231T voltage stabilization module 9 in the UPS operation module 8 automatically adjusts the voltage of the current after receiving the current signal, thereby keeping outputting stable voltage. The stabilized voltage is input into the TPS54231 buck conversion module 10, and the voltage is reduced by the TPS54231 buck conversion module 10, so that the finally output voltage reaches the stabilized 3.6V and is output from the buck power output port (VCU). And a regulated power supply output port (12V) is arranged at the output end of the DM8231T voltage-stabilizing module 9, so that other modules needing the voltage can be connected through a lead, and the output of two signals of a power supply is realized.

The local maintenance module 4 is composed of any one or a combination of several of Wi-Fi, a Bluetooth wireless communication module and an infrared communicator.

Bluetooth wireless communication module includes bluetooth chip 11 and LDO voltage adjustment module 12, UPS power module's output is connected to LDO voltage adjustment module 12's power input end, bluetooth chip 11's an IO end is connected to LDO voltage adjustment module 12's output, bluetooth chip 11's signal transmission end is connected an IO end of master control MCU module 1, bluetooth chip 11 is the bluetooth chip module of UA287QBLE model.

In the utility model, the bluetooth wireless communication comprises a bluetooth chip 11 with model number UA28QBLE, an LDO voltage adjusting module 12 with model number XC6209F392MR, a second FET, a third FET and 5 nonpolar capacitors, the VIN port of the LDO voltage adjusting module is connected with the VCU of the UPS POWER supply module and is connected with 2 nonpolar capacitors in parallel, the CE port is connected with the POWER EN port of the master MCU module, the VOUT port is respectively connected with the P00 port, the VCC port, the P20/UART _ TX port and the P21/UART _ RX port of the bluetooth chip 11 and is connected with 3 nonpolar capacitors in parallel, the TXD receiving port of the master MCU module 1 is connected with the P20/UART _ TX port of the bluetooth chip 11, the second FET is connected between the two ports, the RXD sending port of the master MCU module 1 is connected with the P21/UART _ RX port of the bluetooth chip 11, a third field effect tube is connected between the two ports.

The utility model discloses in, carry out the long-range interaction of signal through the bluetooth passageway with another equipment and electric energy meter, when another equipment needs carry out the parameter setting to the electric energy meter, convey the parameter signal to bluetooth chip 11 through the bluetooth on, bluetooth chip 11 is with parameter signal transmission to master control MCU module 1, master control MCU module 1 handles, and master control MCU module 1 also can convey the parameter signal that can regulate and control to bluetooth chip 11, bluetooth chip 11 is again with on another equipment of signal transmission, the staff can carry out convenient supervision when the installation like this, also make things convenient for long-range setting of carrying out the parameter.

The UPS operation information interaction module 5 comprises an RS-485 interface chip 13 and an RS-485 communication line, wherein a signal transmission end of the RS-485 interface chip 13 is connected with an I/O end of the main control MCU module 1, a power input end of the RS-485 interface chip 13 is connected with an output end of the UPS power supply operation module, and the RS-485 interface chip 13 is an RS-485 interface chip module of HD588EESA model.

The utility model discloses in, UPS operation information interaction module 5 includes RS-485 interface chip 13, the second bidirectional voltage regulator diode, first field effect transistor, PTC positive temperature thermistor and a nonpolar electric capacity, UPS power supply operation module 8's step-down power supply output port defeated (VCU) is all connected to RS-485 interface chip 13's VCC port and A port, the one end of the second bidirectional voltage regulator diode connect RS-485 interface chip 13's B port communication wiring end, RS-485 interface chip 13's A port communication wiring end is connected to the other end, the setting of the second bidirectional voltage regulator diode can reach directional voltage's effect, reaches steady voltage's effect, can the electronic components in the protection circuit, prevents that it from being punctured by the high current. The output end of the PTC positive temperature thermistor is connected with the A port communication wiring end of the RS-485 interface chip 13, in a stable circuit, the PTC positive temperature thermistor is equivalent to a lead, when a temporary pulse signal is met, the PTC resistance value is increased rapidly, and the circuit is equivalent to an open circuit; when the pulse signal leaves, the current is reduced, the resistance value of the PTC positive temperature thermistor is reduced, the circuit is recovered to be normal, and the function of protecting the circuit is achieved in the circuit. The drain electrode of the first field effect tube is connected with the RE port of the RS-485 interface chip, the grid electrode of the first field effect tube is connected with the TXD485 interface, the TXD485 port is connected with the P27/RX3 port of the main control MCU module, the RO port of the RS-485 interface chip 13 is connected with the RXD485 interface, the RXD485 interface is connected with the P26/RX3 port of the main control MCU module, and the VCC port of the RS-485 interface chip 13 is connected with a non-polar capacitor.

The utility model discloses in, UPS operation information interaction module 5 is the information of gathering UPS power operation through RS485 communication channel, UPS power module's step-down power output port (VCU) provides the signal of telecommunication for RS-485 interface chip 13, RS-485 interface chip 13 carries the RXD485 interface with signal, carry main control MCU module 1 in at last, carry out signal processing, carry RS-485 interface chip 13 in through the TXD495 interface with the signal of power handled, carry the signal of power after handling again and show and control on another equipment, reach UPS information interaction effect.

The master control MCU module 1 is connected with a relay drive chip 14, the power input end of the relay drive chip 14 is connected with the output end of the UPS power supply module, the control end of the relay drive chip 14 is connected with an I/O end of the master control MCU module, and the relay drive chip 14 is a relay of BL8023D model.

The utility model discloses in, RELAY driver chip 14's B input port connection RELAY ON interface, A input port connection RELAY OFF interface, constant voltage power supply output port (12V) are connected to the VIN port, and the red line of wire jumper cap 8 is connected to the OB output port, and the black line of wire jumper cap 8 is connected to the OA output port. When the input end A is 1, the input end B is 0, the OA output end is 1 and the OB output end is 0, the relay is in a switching-off state; when the input end A is 0, the input end B is 1, the output end OA is 0 and the output end OB is 1, the relay is in a closing state; when the input end A is 0, the input end B is 0, the OA output end is high-resistance, and the OB output end is high-resistance, the relay is in a holding state; the input end A is 1, the input end B is 1, the OA output end is high resistance, and when the OB output end is high resistance, the relay is in a holding state, so that the functions of circuit switching, automatic adjustment and safety protection in the circuit are achieved.

The output end of the metering monitoring module 2 is connected with an LCD module.

The utility model discloses in, the LCD module includes that the model is YSF 20-01's LCD chip 15, and the drive interface of LCD chip 15 is connected with SEG interface and COM interface respectively, SEG interface connection and COM interface are connected respectively in the IO port of measurement monitoring module 2, and the display screen who connects the LCD chip like this can show information data, carries out the interaction of information.

The NB-IoT remote communication module 3 comprises an NB-IoT chip and a communication module weak current module.

The utility model discloses in, the weak current module of communication module includes the weak current interface of communication module and the circuit of 6 optoelectronic couplers of connecting the interface respectively, and wherein 2 outputs are connected master control MCU module 1's input, and the output of master control MCU module is connected to 4 inputs in addition, and is known for this technical field personnel.

The main control MCU module 1 is an MCU chip with RN8213 model.

Through the technical field, the UPS power supply and the commercial power are communicated, after the electric energy meter enters into work, the system is configured through the local maintenance module 4, if the system parameter configuration is abnormal, parameter initialization is carried out, otherwise, the UPS power supply monitoring system is entered, the metering monitoring module carries out timing metering quantity acquisition, the UPS operation information interaction module carries out timing UPS information acquisition, the acquired data and information are respectively transmitted to the main control MCU module, the main control MCU module carries out processing and then transmits the processed data to the local communication monitoring module, and then transmits the processed data to the remote communication module for detection, whether the electric energy meter is powered down or not is detected, if the monitoring is powered down, the regular metering parameter acquisition stage is returned, thereby the circulation of the operation of the UPS power supply monitoring system is carried out, otherwise, the system enters into a.

Functional characteristics

Measurement monitoring function: gather the power consumption information of UPS power monitoring module:

instantaneously acquiring data: voltage, current, active power, power factor;

accumulating the collected data: active electric energy;

data acquisition frequency: the data reporting frequency (the minimum unit is minute) can be set, and the cloud system can actively collect data according to needs (without time limit).

UPS operation information acquisition function: the UPS power supply working operation information is collected through a 485 channel:

I/P voltage: UPS input voltage

I/P fault voltage: UPS power input fault voltage

O/P voltage: UPS output voltage

O/P load UPS power output load

I/P frequency: UPS power supply input frequency

Voltage of battery

Temperature of

Fault information

The local maintenance function: the device is used for routine operation maintenance, parameter setting, installation and debugging of the UPS power supply monitoring module.

Remote communication function: and performing data interaction with the system in an NB-IoT mobile Internet of things communication mode.

Collecting data communication: and the LWM2M communication protocol is adopted, the NB-IoT southbound communication network is used for transmitting the module information to the mobile ONENET platform, and the operation state and the operation information of the UPS are transmitted to the local server through the northbound component, so that the remote data acquisition interaction is completed.

Remote parameter setting: and adjusting the operation parameters of the UPS power supply monitoring module in a remote mode according to the actual use condition.

Data type

UPS power supply operation information and metering monitoring information

Metering monitoring module 2 attribute information (number, mounting position, etc.)

Metering monitoring module 2 parameter configuration information (reporting period)

NB communication module communication parameters (platform connection mode, IMEI/IMSI, etc.)

The protocol is defined according to the 645-plus 2007 standard format

Technical index

Reference voltage: 220V

Rated current: 5 (60) A

Accuracy grade: active 2 stage

Rated frequency: 50Hz

Electrical parameter

Working power supply

DC 32-64V

Climatic conditions

Normal operating temperature	-25℃~+60℃
		Ultimate operating temperature	-40℃~+70℃
Storage and transportation temperature	-40℃~+70℃
		Storage and working temperatures	Annual average of 75%

The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.

Claims

1. The utility model provides a single-phase intelligent ammeter for monitoring of UPS power, includes the electric energy meter body, its characterized in that: a UPS power supply operation module (8) connected to a UPS power supply, a UPS power supply monitoring module connected to the UPS power supply operation module (8), a main control MCU module (1) connected to the UPS power supply monitoring module, an NB-IoT remote communication module (3) and a local maintenance module (4) which are respectively connected to the main control MCU module (1) are arranged in the electric energy meter shell;

the UPS power supply monitoring module comprises a metering monitoring module (2) and a UPS operation information interaction module (5) which are respectively connected with the UPS power supply operation module (8),

the signal output end of the metering monitoring module (2) is connected to the signal input end of the main control MCU module (1) and is used for monitoring the power utilization information of the UPS and transmitting the power utilization signal to the main control MCU module (1);

the signal output end of the UPS operation information interaction module (5) is connected to the signal input end of the main control MCU module (1) and is used for collecting interaction information of the UPS power supply operation module (8) and transmitting an interaction signal to the main control MCU module (1);

the master control MCU module (1) is used for receiving the power utilization information and the interaction information of the UPS power monitoring module and processing the power utilization information and the interaction information into UPS power monitoring data for output;

the data communication end of the NB-IoT remote communication module (3) is connected with an I/O end of the main control MCU module (1) for communication, UPS power supply monitoring data are received through the NB-IoT remote communication module (3) and output to an external server, and the regular reporting and the remote data acquisition of the UPS power supply monitoring data are realized;

the output end of the local maintenance module (4) is connected with an I/O end of the main control MCU module (1), information of an external communication channel is transmitted to the main control MCU through the local maintenance module (4), and local interaction is carried out on the information and the UPS power supply monitoring module.

2. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the data input end of the metering monitoring module (2) is connected with a UPS voltage sampling module (6) and a UPS current sampling module (7) respectively, and data acquisition and output of the UPS power supply operation module (8) are carried out through the UPS voltage sampling module (6) and the UPS current sampling module (7).

3. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the UPS power supply operation module (8) comprises a voltage stabilizing module (9) and a voltage reduction conversion module (10), the input end of the voltage stabilizing module (9) is connected with the output end of the UPS power supply, the output end of the voltage stabilizing module is connected with a voltage stabilizing power supply output port, the input end of the voltage reduction conversion module (10) is connected with the voltage stabilizing power supply output port, and the output end of the voltage reduction conversion module is connected with a voltage reduction power supply output.

4. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the local maintenance module (4) is composed of any one or a combination of several of Wi-Fi, a Bluetooth wireless communication module and an infrared communicator.

5. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 4, wherein: bluetooth wireless communication module includes bluetooth chip (11) and LDO voltage adjustment module (12), the output of UPS power module operation module is connected to the power input end of LDO voltage adjustment module (12), an IO end of bluetooth chip (11) is connected to the output of LDO voltage adjustment module (12), an IO end of master control MCU module (1) is connected to the signal transmission end of bluetooth chip (11), bluetooth chip (11) are the bluetooth chip (11) module of UA287QBLE model.

6. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the UPS operation information interaction module (5) comprises an RS-485 interface chip (13) and an RS-485 communication line, the signal transmission end of the RS-485 interface chip (13) is connected with an I/O end of the master control MCU module (1), the power input end of the RS-485 interface chip (13) is connected with the output end of the UPS power supply operation module, and the RS-485 interface chip (13) is an RS-485 interface chip (13) module of an HD588EESA model.

7. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the master control MCU module (1) is connected with relay drive chip (14), the output of UPS power module operation module is connected to the power input of relay drive chip (14), the IO end of master control MCU module (1) is connected to the control end of relay drive chip (14), relay drive chip (14) is the relay of BL8023D model.

8. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the output end of the metering monitoring module (2) is connected with an LCD module.

9. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the NB-IoT remote communication module (3) comprises an NB-IoT chip and a communication module weak current module.

10. The single-phase intelligent electric energy meter for monitoring the UPS according to claim 1, characterized in that: the main control MCU module (1) is an MCU chip of RN8213 type.