CN216082920U - Can promote electric energy meter of hotel guest room power saving - Google Patents

Abstract

The utility model relates to an electric energy meter capable of promoting the electricity saving of hotel rooms, which is characterized in that: the device comprises a single chip microcomputer circuit, a red-yellow-green three-color backlight LCD display circuit, a high-speed power line carrier module circuit, a metering circuit, a power supply circuit and a memory circuit, wherein the single chip microcomputer circuit is electrically connected with the red-yellow-green three-color backlight LCD display circuit, the high-speed power line carrier module circuit, the metering circuit, the power supply circuit and the memory circuit respectively. The novel guest room power utilization system has the advantages of reasonable structure and reliable performance, and can guide guests in guest rooms to safely and reasonably use power.

Description

Can promote electric energy meter of hotel guest room power saving

Technical Field

The utility model belongs to the field of smart power grids, and relates to an electric energy meter capable of promoting hotel guest rooms to save electricity.

Background

With the development of the intelligent power grid, reasonable power utilization of users is guided by price factors, so that the effects of cutting peaks and filling valleys to stabilize the power grid can be achieved, and the energy-saving purpose of sustainable development can be achieved. At present, most hotel rooms are in a power utilization management mode that a room card is inserted for power supply when a guest enters the room, and the card is pulled out for power failure when the guest leaves the room. Along with the flourishing development of tourism industry, more and more tourists of self-driving travel, bicycle riding, these tourists all carry not few storage electric energy and equip: charger, accumulator, battery, vehicle emergency power supply, etc. Once the electric energy stored in the equipment is used up, most people can choose to stay in the hotel for a rest day, the main purpose of the equipment is to charge the equipment for storing the electric energy, and even more guests can charge a plurality of equipment for storing the electric energy at the same time by the aid of the plug row. For a hotel, due to the long-time access of high-power equipment, the high power consumption is generated, and the operation cost of the hotel is increased; due to long-time high-power work, the electric wires of the hotel rooms are in a long-time heavy-current state, and fire hazards exist; the existing equipment for storing electric energy is mainly a lithium battery pack basically, and accidents such as spontaneous combustion, explosion and the like also occur in the charging process of the lithium battery of the electric vehicle. The hotel is a place with dense personnel, and once a certain device for storing electric energy is spontaneously combusted and exploded during charging, the hotel can bring fatal potential safety hazard to the whole hotel. In the prior art, a hotel cannot master the electricity utilization condition of a guest in a room, and some guests can shield a large-capacity electric energy storage device in advance to avoid inspection even if the guests find abnormal knock in. So far, no literature report and practical application of an electric energy meter related to the utility model and capable of promoting electricity saving of hotel rooms is available.

Disclosure of Invention

The utility model aims to solve the technical problem of overcoming the defects of the prior art and provides an electric energy meter capable of promoting the electricity conservation of hotel rooms. The novel guest room power utilization system has the advantages of reasonable structure and reliable performance, and can guide guests in guest rooms to safely and reasonably use power.

The technical scheme for solving the technical problem is that the electric energy meter capable of promoting the electricity saving of hotel rooms is characterized in that: the device comprises a single chip microcomputer circuit, a red-yellow-green three-color backlight LCD display circuit, a high-speed power line carrier module circuit, a metering circuit, a power supply circuit and a memory circuit, wherein the single chip microcomputer circuit is electrically connected with the red-yellow-green three-color backlight LCD display circuit, the high-speed power line carrier module circuit, the metering circuit, the power supply circuit and the memory circuit respectively.

The singlechip circuit includes: the chip U1, crystal oscillator X1, resistor R8 and capacitor C9-C11, the chip U1 is connected with crystal oscillator X1, resistor R8 and capacitor C9-C11.

The red, yellow and green backlight LCD display circuit comprises: the LED display screen comprises an LCD display screen LCD1, resistors R13-R21, triodes T2-T4 and light emitting diodes LED1-LED3, wherein the LCD display screen LCD1 is connected with the resistors R13-R15, the triodes T2 and the light emitting diodes LED1 to form a red backlight LCD display; the LCD1 is connected with the resistors R16-R18, the triode T3 and the light emitting diode LED2 to form a yellow backlight LCD; the LCD screen LCD1 is connected with the resistors R19-R21, the triode T3 and the light emitting diode LED3 to form a green backlight LCD.

The high-speed power line carrier module circuit includes: the high-speed power line carrier module U2, resistance R1, R2, R3, R4, R5, R6 and R7, the high-speed power line carrier module U2 is connected with the resistance R1, R2, R3, R4, R5, R6 and R7.

The metering circuit comprises: the voltage sampling circuit comprises a metering chip U7, resistors R22-R28, R33-R45, a manganin shunt R46, capacitors C13, C14, C17-C24, optical couplers D8-D10 and a crystal oscillator X2, wherein the metering circuit U7 is electrically connected with the resistors R33-R39 and C17, and the U7 of the metering circuit is electrically connected with the resistor R40 and the capacitor C18 to form the voltage sampling circuit; the metering circuit U7 is electrically connected with a manganin shunt R46, resistors R25-R28, capacitors C13 and C14 to form a current sampling circuit; the metering circuit U7 is electrically connected with the resistor 41 and the capacitors C19-C21 to form a reference voltage power supply circuit; the U7 crystal oscillator X2 and the capacitors 23 and C24 of the circuit are connected to the U7 ports 1 and 16 of the volume circuit to form a clock circuit; the metering circuit U7 is electrically connected with the resistors R22-R24 and the optocoupler D8 to form an electric energy pulse output circuit; the metering circuit U7 is electrically connected with the resistors R44 and R45, the capacitor C22 and the optocoupler D9 to form a serial port data receiving circuit; the resistors R42 and R43, the optocoupler D10 and a chip U1 of the single chip microcomputer circuit are electrically connected to form a serial port data sending circuit, and the metering circuit U7 sends response data to the single chip microcomputer circuit U1 through the serial port data sending circuit according to a received control command.

The power supply circuit comprises: the circuit comprises a voltage dependent resistor RV1, a composite thermistor PT1, a transformer T1, voltage regulators U3-U5, capacitors C1-C8 and diodes D1-D7, wherein the voltage dependent resistor RV1, the composite thermistor PT1, the transformer T1, the voltage regulators U3-U5, the capacitors C1-C8 and the diodes D1-D7 are connected.

The memory circuit comprises: the memory chip U6, resistance R9, R10, electric capacity C12, the memory chip U6, resistance R9, R10, electric capacity C12 link.

The model of the chip U1 of the single chip microcomputer circuit is FM 3318.

The electric energy meter capable of promoting the hotel rooms to save electricity is arranged in a hotel room corridor and is close to the room doors, one electric energy meter is arranged at each room door, a power line is used as a communication medium, wiring is not needed, display is visual and simple, electric energy data and real-time power consumed during the room opening and the room check-in period of guests can be measured, a large-capacity storage is arranged in the electric energy meter, and electricity utilization records exceeding the power limit value can be stored: the number of times the power limit is exceeded, and the power consumed during the power limit is exceeded, are recorded. Hotel staff can directly see the real-time electricity consumption and real-time power value of the corresponding guest room through the LCD display of the electric energy surface plate in the corridor; through the different colours that the LCD display of electric energy surface board is shaded, can judge whether the current power consumption condition in the guest room is normal: the backlight is turned off to indicate that no power is used, the backlight is green to indicate that the power consumption is low, the backlight is yellow to indicate that the current power is high, and the backlight is red to indicate that the power consumption is high and the power is over-limit. Once the backlight is red and bright, customer service personnel are needed to contact the guest to reduce the power consumption, if the guest is not in the room, the guest needs to enter the room for treatment, and hidden troubles are eliminated in the sprouts. The limit values of each level of power can be set by a foreground or a guest room management department by issuing a setting command through a power line by a computer. When a guest transacts a check-in procedure, a specified guest room electric quantity zero clearing instruction is issued by a foreground computer, an electric energy meter of a specified room receives a master station command through a built-in high-speed power line carrier module circuit through a power line, and then electric quantity zero clearing operation is started, so that the electric quantity is metered from 0.00kWh after the guest transacts. When a guest leaves a room for settlement, a foreground computer issues a command for reading the electric quantity of the specified guest room, an electric energy meter of the specified room receives the reading command of a master station through a built-in high-speed power line carrier module circuit through a power line, and then the electric energy and the over-power limit value generated during the guest's stay are recorded and sent to the hotel foreground computer. According to the related policies of the hotel, the hotel front desk staff can make up the electric charge loss of the hotel aiming at the electricity utilization condition during the guest check-in period, or thank the guest to save electricity, or increase the excess electric charge due to the larger electric energy consumption. Therefore, reasonable electricity consumption can be easily guided to guests through the price lever, charging service can be provided for the guests who really have the needs, the hotel can reasonably increase income while the needs of the guests are met, better service is achieved, and win-win of the hotel and the guests is realized. Has the advantages of reasonable structure and reliable performance.

Drawings

FIG. 1 is a schematic view of an electric energy meter for saving electricity in hotel rooms according to the present invention;

FIG. 2 is a schematic block diagram of an electric energy meter for saving electricity in hotel rooms, according to the present invention;

FIG. 3 is a schematic diagram of a circuit of the chip in FIG. 2;

FIG. 4 is a schematic diagram of a red-yellow-green backlight LCD circuit of FIG. 2;

FIG. 5 is a schematic circuit diagram of the high speed power line carrier module of FIG. 2;

FIG. 6 is a schematic diagram of the metering circuit of FIG. 2;

FIG. 7 is a schematic diagram of the power circuit of FIG. 2;

fig. 8 is a schematic diagram of the memory circuit of fig. 2.

Detailed Description

The following provides a detailed description of an electric energy meter capable of promoting electricity saving of hotel rooms, which is provided by the utility model, by using the accompanying drawings and the embodiment.

Referring to fig. 1, the electric energy meter capable of promoting the electricity saving of hotel rooms of the utility model comprises a panel 1 and an LCD display screen 2.

Referring to fig. 2, the electric energy meter capable of promoting the electricity saving of hotel guest rooms comprises a single chip microcomputer circuit, a red-yellow-green three-color backlight LCD display circuit, a high-speed power line carrier module circuit, a metering circuit, a power supply circuit and a storage circuit, wherein the single chip microcomputer circuit is respectively and electrically connected with the red-yellow-green three-color backlight LCD display circuit, the high-speed power line carrier module circuit, the metering circuit, the power supply circuit and the storage circuit.

Referring to fig. 1-8, the electric energy meter capable of promoting electricity conservation of hotel rooms comprises a single chip microcomputer circuit, wherein the single chip microcomputer circuit comprises a chip U1, a crystal oscillator X1, a resistor R8 and capacitors C9, C10 and C11 which are connected. The red, yellow and green backlight LCD display circuit comprises an LCD display screen LCD1, resistors R13, R14, R15, R16, R17, R18, R19, R20, R21, triodes T2, T3 and T4, a light-emitting diode LED1, an LED2 and an LED3 which are connected, wherein the LCD display screen LCD1 is connected with the resistors R13-R15, the triode T2 and the light-emitting diode LED1 to form a red backlight LCD display; the LCD1 is connected with the resistors R16-R18, the triode T3 and the light emitting diode LED2 to form a yellow backlight LCD; the LCD screen LCD1 is connected with the resistors R19-R21, the triode T3 and the light emitting diode LED3 to form a green backlight LCD. The high-speed power line carrier module circuit comprises a high-speed power line carrier module U2, and resistors R1, R2, R3, R4, R5, R6 and R7 are connected. The metering circuit comprises a metering chip U7, resistors R22, R23, R24, R25, R26, R27, R28, R33, R34, R35, R36, R37, R38, R39, R40, R41, R42, R43, R44 and R45, a manganese copper shunt R46, capacitors C13, C14, C17, C18, C19, C20, C21, C22, C23 and C24, optical couplers D8, D9 and D10, and a crystal oscillator X2 which are connected. The power supply circuit comprises a voltage dependent resistor RV1, a composite thermistor PT1, a transformer T1, voltage regulators U3, U4 and U5, capacitors C1, C2, C3, C4, C5, C6, C7 and C8, and diodes D1, D2, D3, D4, D5, D6 and D7 which are connected. The memory circuit comprises a memory chip U6, resistors R9 and R10 and a capacitor C12 which are connected. The model of the chip U1 of the single chip microcomputer circuit is FM 3318.

Referring to fig. 3, a chip U1 of the one-chip microcomputer circuit adopts FM3318 of shanghai compound denier microelectronics, after each power-on, the calibration parameters stored in a memory circuit U6 are automatically sent to a U7 of the metering circuit through a JL _ TX port, the calibration parameters of the metering chip are configured, and then the current electric quantity data stored in the memory circuit U6 is read into a RAM, so that the start-up operation is completed. And then entering a main cycle working mode, sending a reading real-time power and a current new metering electric energy command to the metering circuit through the JL _ TX port every second, receiving current real-time power data and new electric energy data returned by the metering circuit through the JL _ RX port, finishing the accumulation work of electric energy, and controlling the current real-time power and the power consumption to be displayed on an LCD1 display screen of the red-yellow-green backlight LCD display circuit through an LCD driver arranged in the single chip microcomputer. Meanwhile, according to the magnitude of real-time power, the real-time power is compared with the power limit values of all built-in levels, and then the single chip microcomputer circuit U1 controls the three backlight control circuits through the three ports LCD-LED1, LCD-LED2 and LCD-LED3, so that the lighting effect of the red, yellow and green LCD backlight indicator lamps is achieved. Once a guest transacts a check-in and check-out procedure in the foreground, a foreground customer service worker issues a designated guest room electric quantity zero clearing instruction through a computer, the instruction message is transmitted to an electric energy meter of the designated guest room through a power line, is detected and identified by a high-speed power line carrier module circuit in the electric energy meter and is transmitted to a single chip microcomputer circuit U1, the single chip microcomputer U1 analyzes the instruction message, after the electric quantity zero clearing instruction is verified, electric quantity data in an RAM and a memory are cleared, and the electric energy meter starts to accumulate electric quantity again from 0.00 kWh. During guest's check-in, hotel guest room service personnel just can see the power consumption and the real-time power of guest room through the LCD display screen of electric energy meter in the corridor, judge guest's power consumption condition through LCD display's the color of being shaded directly perceivedly: the backlight is off, which indicates that the guest does not use electricity; the backlight green represents that the guest uses electricity with low power consumption; the backlight yellow indicates that the current power consumption of the guest is larger; the backlit red indicates that the guest is in an over-power limit power usage. Once the backlight is red and bright, customer service personnel are needed to contact the guest to reduce the power consumption, if the guest is not in the room, the guest needs to enter the room for treatment, and hidden dangers are eliminated in the sprouts. The power limit value of the guest room can be set independently by a foreground or a guest room management department by sending a setting command by a computer, and the set power limit value is stored in a memory circuit U6 in the electric energy meter, so that different limit values can be set according to the electric wires and power supply conditions of different guest rooms. When a guest leaves a room for settlement, a foreground customer service worker issues a command for reading the electric quantity of a specified guest room through a computer, via a power line, an electric energy meter of the specified room decodes a reading command message from the power line through a built-in high-speed power line carrier module circuit and sends the reading command message to the single chip microcomputer U1, and the single chip microcomputer U1 responds to a command request, and sends electric energy data and power overrun recorded data during the guest's stay period to a hotel foreground computer from the power line via the high-speed power line carrier module circuit. The hotel reception desk staff can make different dispositions according to the copied electricity consumption and power overrun record and the hotel policy aiming at the electricity consumption behavior of guests during check-in: or thank you the behavior of saving electricity and give a small gift; or the excess electric charge is increased due to larger electric energy consumption, so that the electric charge loss of the hotel is made up. The program in the single chip microcomputer circuit chip U1 controls the operation of the whole electric energy meter.

Referring to fig. 4, the LCD1 is an LCD display screen, and its 6 COM ports COM0, … and COM5 are connected to the corresponding LCD driving COM port of the one-chip circuit U1, and its 23 SEG ports SEG0, … and SEG22 are connected to the corresponding LCD driving SEG port of the one-chip circuit U1, and its operation display effect is shown in fig. 1. The LCD screen LCD1 is connected with the resistors R13-R15, the triode T2 and the light emitting diode LED1 to form a red backlight LCD, and the U1 of the single chip microcomputer circuit directly controls the backlight of the LCD to be lightened into a red effect through the port LCD-LED 1; the LCD display screen LCD1 is connected with a resistor R16-R18, a triode T3 and a light emitting diode LED2 to form a yellow backlight LCD, and the U1 of the single chip microcomputer circuit directly controls the backlight of the LCD to be lightened into a yellow effect through a port LCD-LED 2; the LCD screen LCD1 is connected with the resistor R19-R21, the triode T3 and the light emitting diode LED3 to form a green backlight LCD, and the U1 of the single chip microcomputer circuit directly controls the backlight of the LCD to be lightened into a green effect through the port LCD-LED 3.

Referring to fig. 5, the high-speed power line carrier module circuit constantly detects the power line carrier signals of the signal coupling interfaces AGND and N, demodulates the signals once receiving the carrier signals from the front desk or the guest room management department, and transmits the demodulated command message to the port PLC _ RXD of the single chip microcomputer U1 through the resistor R1 by the port 8 of the high-speed power line carrier module, and transmits the demodulated command message to the U1 of the single chip microcomputer circuit, thereby completing the receiving work of the remote command. When the chip U1 of the single chip circuit responds to the command message, the response message data to be sent is sent to the port PLC _ TXD and then sent to the receiving port 5 of the high-speed power line carrier module U2 through the resistor R4, the high-speed power line carrier module U2 modulates the received signal, and the signal is coupled to the power line through the ports AGND and N to complete the sending work of the power line carrier command response message. Wherein the U1 of the single chip circuit is connected to the port 6 of the high speed power line carrier module U2 through the resistor R3 through the port PLC _ SET, the high speed power line carrier module U2 can be controlled to enter a settable state or to exit the settable state. Wherein the U1 of the one-chip microcomputer circuit is connected to the port 4 of the high-speed power line carrier module U2 through the resistor R5 by the port PLC _ RST, the high-speed power line carrier module U2 can be controlled to enter the reset state or exit the reset state. Wherein the port 3 of the high-speed power line carrier module U2 is connected to the port PLC _ STA of the U1 of the single chip circuit via the resistor R6, the busy and the idle of the working state of the high-speed power line carrier module U2 can be transmitted to the U1 of the single chip circuit, so as to facilitate better cooperative work.

Referring to fig. 6, a port N is connected to a U7 port 9 of the metering circuit via resistors R33, R34, R35, R36, R37, R38, R39, and C17, and a resistor R40 and a capacitor C18 are connected to a U7 port 10 of the metering circuit, which together constitute a voltage sampling circuit. The current sampling circuit is formed by connecting ports PHASE IN and PHASE OUT to U7 ports 5 and 6 of the metering circuit through a manganin shunt R46, resistors R25, R26, R27 and R28 and capacitors C13 and C14. The resistor 41 and the capacitors C19, C20 and C21 are connected to the U7 port 11 of the metering circuit to form a reference voltage supply circuit. The clock circuit is formed by connecting a crystal oscillator X2 and capacitors 23 and C24 to U7 ports 1 and 16 of the volume circuit. The U7 port 2 of the metering circuit sends the active energy pulse generated by metering to the JL _ ACTIVEP port of the U1 of the single chip microcomputer circuit through the resistors R24, R22, R23 and the optical coupler D8 to form an energy pulse output circuit for adjusting factory errors. The resistors R44 and R45, the capacitor C22 and the optocoupler D9 are connected to the U7 port 13 of the metering circuit to form a serial port data receiving circuit, and the U1 of the single chip microcomputer circuit can send a control instruction to the U7 of the metering circuit through the port JL _ TX. The resistors R42 and R43 and the optocoupler D10 are connected to a U1 port JL _ RX of the single chip microcomputer circuit to form a serial port data transmitting circuit, and the U7 of the metering circuit transmits response data to the U1 of the single chip microcomputer circuit through the serial port data transmitting circuit according to a received control command.

Referring to fig. 7, after a 220V power supply is connected to a power supply circuit, a protection circuit is formed by a voltage dependent resistor RV1 and a composite thermistor PT1, and then the voltage is transformed by a transformer T1 to be 2-path output, wherein one path of output is output to voltage regulators U3 and U4 after rectification and filtering through diodes D1, D2, D3 and D4 and capacitors C1 and C3. Voltage is stabilized by a voltage stabilizer U3, and filtered by a capacitor C2 and then output to a ZB12V power supply port to supply power to a high-speed power line carrier module circuit; the voltage is regulated by a voltage regulator U4, a diode D5, capacitors C4 and C5, and the regulated and filtered voltage is isolated and output to a VDD port by a diode D6 to supply power for a digital circuit. The other output is isolated by a diode D7, filtered by capacitors C6 and C7, stabilized by a voltage stabilizer U5, filtered by a capacitor C8 and output to an AVCC power port to supply power for an analog circuit.

Referring to fig. 8, the memory is connected to the U1 of the single chip circuit through the ports SCL and SDA using the AT24C 512. The method is used for saving equipment information such as meter calibration parameters and communication addresses which leave a factory, and also saving current electric quantity data and all electric quantity zero clearing records and power overrun records in operation. These records can be queried by computers of management departments in a power line carrier manner.

All electronic components of the electric energy meter capable of promoting electricity conservation of hotel rooms are commercially available products.

The description of the present invention is not intended to be exhaustive or to limit the scope of the claims, and those skilled in the art will be able to conceive of other substantially equivalent alternatives, without inventive step, based on the teachings of the embodiments of the present invention, within the scope of the present invention.

Claims (8)

1. The utility model provides a can promote electric energy meter of hotel guest room power saving, characterized by: the device comprises a single chip microcomputer circuit, a red-yellow-green three-color backlight LCD display circuit, a high-speed power line carrier module circuit, a metering circuit, a power supply circuit and a memory circuit, wherein the single chip microcomputer circuit is electrically connected with the red-yellow-green three-color backlight LCD display circuit, the high-speed power line carrier module circuit, the metering circuit, the power supply circuit and the memory circuit respectively.

2. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the singlechip circuit includes: the chip U1, crystal oscillator X1, resistor R8 and capacitor C9-C11, the chip U1 is connected with crystal oscillator X1, resistor R8 and capacitor C9-C11.

3. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the red-yellow-green three-color backlight LCD circuit comprises: the LED display screen comprises an LCD display screen LCD1, resistors R13-R21, triodes T2-T4 and light emitting diodes LED1-LED3, wherein the LCD display screen LCD1 is connected with the resistors R13-R15, the triodes T2 and the light emitting diodes LED1 to form a red backlight LCD display; the LCD1 is connected with the resistors R16-R18, the triode T3 and the light emitting diode LED2 to form a yellow backlight LCD; the LCD screen LCD1 is connected with the resistors R19-R21, the triode T3 and the light emitting diode LED3 to form a green backlight LCD.

4. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the high-speed power line carrier module circuit includes: the high-speed power line carrier module U2, resistance R1, R2, R3, R4, R5, R6 and R7, the high-speed power line carrier module U2 is connected with the resistance R1, R2, R3, R4, R5, R6 and R7.

5. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the metering circuit includes: the voltage sampling circuit comprises a metering chip U7, resistors R22-R28, R33-R45, a manganin shunt R46, capacitors C13, C14, C17-C24, optical couplers D8-D10 and a crystal oscillator X2, wherein the metering circuit U7 is electrically connected with the resistors R33-R39 and C17, and the U7 of the metering circuit is electrically connected with the resistor R40 and the capacitor C18 to form the voltage sampling circuit; the metering circuit U7 is electrically connected with a manganin shunt R46, resistors R25-R28, capacitors C13 and C14 to form a current sampling circuit; the metering circuit U7 is electrically connected with the resistor 41 and the capacitors C19-C21 to form a reference voltage power supply circuit; the U7 crystal oscillator X2 and the capacitors 23 and C24 of the circuit are connected to the U7 ports 1 and 16 of the volume circuit to form a clock circuit; the metering circuit U7 is electrically connected with the resistors R22-R24 and the optocoupler D8 to form an electric energy pulse output circuit; the metering circuit U7 is electrically connected with the resistors R44 and R45, the capacitor C22 and the optocoupler D9 to form a serial port data receiving circuit; the resistors R42 and R43, the optocoupler D10 and a chip U1 of the single chip microcomputer circuit are electrically connected to form a serial port data sending circuit, and the metering circuit U7 sends response data to the single chip microcomputer circuit U1 through the serial port data sending circuit according to a received control command.

6. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the power supply circuit includes: the circuit comprises a voltage dependent resistor RV1, a composite thermistor PT1, a transformer T1, voltage regulators U3-U5, capacitors C1-C8 and diodes D1-D7, wherein the voltage dependent resistor RV1, the composite thermistor PT1, the transformer T1, the voltage regulators U3-U5, the capacitors C1-C8 and the diodes D1-D7 are connected.

7. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1, which is characterized in that: the memory circuit includes: the memory chip U6, resistance R9, R10, electric capacity C12, the memory chip U6, resistance R9, R10, electric capacity C12 link.

8. The electric energy meter capable of promoting electricity conservation of hotel rooms according to claim 1 or 2, characterized in that: the model of the chip U1 of the single chip microcomputer circuit is FM 3318.

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