CN112072413A - A smart power cord plug - Google Patents

Abstract

The invention provides an intelligent power cord plug. The AC/DC power supply chip is connected to the 220V commercial power supply to generate the power supply DC 5V. The power supply DC 5V is converted into the power supply DC 3.3V through the voltage regulator chip, and the MCU is integrated with a voltage , Current sampling module, voltage and current sampling module is used to collect voltage and current information of AC 220V AC in real time, backlight, infrared emission module, EEPROM memory, key input module and WIFI communication module are all connected to MCU, power supply DC 5V and The backlight source, the infrared emission module and the EEPROM memory are connected to provide power. The power supply DC 3.3V is connected to the key input module and the WIFI communication module to provide power. The electrical equipment body is provided with an infrared receiving module that matches the infrared transmitting module. , the WIFI communication module is connected to the cloud server. The invention reversely controls the electrical equipment through the infrared emission module, saves the on-off control structure in the smart plug, and the plug is more intelligent and miniaturized.

Description

A smart power cord plug

technical field

The invention relates to the technical field of smart home control, in particular to an intelligent power cord plug.

Background technique

In recent years, with the development of the country's advocacy of green new energy and the 5G Internet of Things, many smart home devices use functions such as low energy consumption, wireless network control, and remote monitoring. The mains electricity currently used in my country is 220V/50Hz alternating current. For many smart home manufacturers in this market, many smart sockets with power metering and remote control have been developed. The socket is plugged into the mains socket, and then the household equipment The power plug is inserted into the smart socket. The disadvantage of this method is that the space used is large, and the connection places are prone to poor contact. At present, there is no smart power monitoring plug with a high degree of integration on the market.

In the power calculation, this ordinary meter can meet the calculation of the electricity consumption of the whole family, but it cannot be completely accurate to the electricity consumption of each electric device. Even if the socket with power metering is used, it cannot be monitored and controlled remotely. Big data preservation record analysis. Users cannot know whether the equipment can meet the national energy efficiency standards and whether it meets the requirements of green energy conservation advocated by the state.

Most of the smart sockets on the market are customized for a certain household equipment. If there are many household equipment used in the family, you need to purchase the corresponding smart sockets. The cost is high, the socket space is limited, the use cannot be unified, and it is not easy to manage. And remote monitoring, need to use different mobile phone software for login query.

Based on this, there is an urgent need for a smart power cord plug based on big data management that can be remotely operated and locally monitored.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention aims to provide an intelligent power cord plug, which integrates each module into the plug, monitors various parameters of the electrical equipment through the plug that comes with the electrical equipment, and can adjust the reverse control through the plug. Electric equipment, to achieve remote intelligent monitoring and control of electric equipment.

In order to achieve the above object, the technical scheme of the present invention is achieved in this way:

An intelligent power cord plug relates to an electrical equipment body, and is characterized in that it includes a plug body connected to the electrical equipment body and a cloud server, and an AC/DC power supply chip, a voltage regulator chip, and an MCU are installed in the plug body. , infrared emission module, EEPROM memory, backlight, WIFI communication module and key input module, the AC/DC power supply chip is connected with the mains 220V AC to generate the power supply DC 5V, and the power supply DC 5V is converted by the voltage regulator chip into The power supply is DC 3.3V, and the MCU is integrated with a voltage and current sampling module. The voltage and current sampling module is used to collect the voltage and current information of the 220V AC power supply in real time. The backlight, infrared emission module, EEPROM memory, The key input module and the WIFI communication module are both connected to the MCU, the DC 5V power supply is connected to the backlight, the infrared emission module and the EEPROM memory for providing power, and the DC 3.3V power supply is connected to the key input module and the WIFI communication module for A power supply is provided, an infrared receiving module matched with an infrared transmitting module is arranged in the body of the electrical device, and the WIFI communication module is connected to a cloud server.

Further, it also includes a mobile terminal and a PC terminal, and the mobile terminal and the PC terminal are both connected to the cloud server or the mobile terminal and the PC terminal are directly connected to the WIFI communication module.

Further, the AC/DC power supply chip and the voltage regulator chip are integrated into a power supply circuit board, and the MCU, infrared emission module, EEPROM memory, backlight source, WIFI communication module and key input module are integrated into a control board.

Further, the power circuit board is inserted into the plastic part of the lower shell of the plug body according to the position of the mains plug hole, and is fastened with a buckle; The upper control board is inserted into the position, and the upper control board is clamped by the upper shell fastener of the plug body.

Further, the upper shell and the lower shell are integrated by ultrasonic welding.

In order to achieve the above purpose, the present invention also provides an intelligent power cord plug, which relates to an electrical device body, including a plug body connected to the electrical device body and a cloud server, and an AC/DC power chip is installed in the plug body. , voltage regulator chip, metering chip, infrared emission module, WIFI communication module and key input module, the AC/DC power supply chip is connected with the mains 220V AC to generate the power supply DC 5V, and the power supply DC 5V is converted by the voltage regulator chip The power supply is 3.3V DC. The metering chip is used to collect the voltage and current information of the 220V AC power supply in real time. The infrared emission module, the key input module and the metering chip are all connected to the WIFI communication module. The power supply DC 5V is connected to the infrared The transmitting module is connected to provide power, and the DC 3.3V power supply is connected to the key input module, the WIFI communication module and the metering chip to provide power. The electrical equipment body is provided with an infrared receiving module that matches the infrared transmitting module. , the WIFI communication module is connected with the cloud server.

Further, it also includes a mobile terminal and a PC terminal, and the mobile terminal and the PC terminal are both connected to the cloud server or the mobile terminal and the PC terminal are directly connected to the WIFI communication module.

Further, it also includes a two-color indicator light, the power supply DC 5V is connected to the two-color indicator light to provide power, and the two-color indicator light is connected to the WIFI communication module to display the WIFI connection status information.

Further, the AC/DC power supply chip, voltage regulator chip, metering chip, infrared emission module, WIFI communication module and key input module are integrated into a power supply circuit board.

Further, the power circuit board is inserted into the plastic part of the lower shell of the plug body according to the position of the mains plug hole, and is fastened with a buckle; The plastic parts are clamped by the upper shell clips of the plug body, and the upper shell and the lower shell are integrated by ultrasonic welding

Beneficial effects: the present invention is an intelligent power cord plug with a high degree of integration, the use state of the electrical equipment is reversely controlled through the infrared emission module, the structure of controlling on-off in the intelligent plug is omitted, and the use space of the intelligent socket of the present invention is small. , you can check the power consumption and various parameter information of the electrical equipment at any time through the mobile phone, and store the relevant power consumption information through the cloud server, which is convenient to call at any time.

Description of drawings

The accompanying drawings constituting a part of the present invention are used to provide further understanding of the present invention, and the exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the attached image:

Fig. 1 is the functional structure schematic diagram (liquid crystal version) of the smart power cord plug described in Embodiment 1 of the present invention;

2 is a schematic diagram of the functional structure of the smart power cord plug according to Embodiment 2 of the present invention (non-liquid crystal version);

3 is a schematic diagram (liquid crystal version) of the disassembly and assembly structure of the smart power cord plug according to Embodiment 1 of the present invention;

4 is a schematic diagram of the disassembly and assembly structure of the smart power cord plug according to Embodiment 2 of the present invention (non-liquid crystal version);

5 is a schematic diagram (liquid crystal version) of the overall structure of the smart power cord plug according to Embodiment 1 of the present invention;

FIG. 6 is a schematic diagram of the overall structure of the smart power cord plug according to Embodiment 2 of the present invention (non-liquid crystal version).

Detailed ways

It should be noted that the embodiments of the present invention and the features of the embodiments may be combined with each other under the condition of no conflict.

The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

Example 1

See Figures 1, 3, and 5: an intelligent power cord plug, involving an electrical device body, including a plug body connected to the electrical device body and a cloud server, the plug body is equipped with an AC/DC power supply chip, a stable voltage chip, MCU, infrared emission module, EEPROM memory, backlight source, WIFI communication module and key input module, the AC/DC power chip is connected with the mains 220V AC to generate the power DC 5V, and the power DC 5V is stabilized The voltage chip is converted into a power supply of DC 3.3V, the MCU is integrated with a voltage and current sampling module, and the voltage and current sampling module is used to collect the voltage and current information of the 220V AC power supply in real time. , EEPROM memory, key input module and WIFI communication module are all connected to MCU, the power supply DC 5V is connected to the backlight, infrared emission module and EEPROM memory to provide power, the power supply DC 3.3V is connected to the key input module, WIFI communication The modules are connected to provide power, the electrical equipment body is provided with an infrared receiving module matched with the infrared transmitting module, and the WIFI communication module is connected to the cloud server.

It should be noted that the smart plug of the liquid crystal version in this embodiment omits the relevant control modules for controlling the on-off of the plug, and achieves the miniaturization of the space of the plug body, such as a relay module. In this embodiment, an infrared emission module is used in the body of the electrical equipment Therefore, in this embodiment, the mobile terminal or PC terminal can directly send control commands to the WIFI communication module, and the MCU can control the infrared transmitter module to send control signals, so as to establish a control connection with the electrical equipment, which can achieve Change the current operating status of the electrical equipment (mode, wind speed, heating, on-off, etc.).

It can be understood that, the LCD version of the smart power plug in this embodiment stores the relevant monitoring information of the smart plug through the cloud server. In addition, the current monitoring information is displayed in real time through the LCD backlight, and the control command can be directly input through the key input module to control the power consumption. The device can input control commands through the mobile terminal or PC terminal connected to the WIFI communication module, and the control methods are diversified; in this embodiment, various power consumptions of the electrical equipment stored on the cloud server can be viewed in real time through the mobile terminal and the PC terminal. Information parameter situation.

In a specific implementation, this embodiment can monitor the current/voltage/power/power factor/accumulated electricity/carbon dioxide emissions and other values of the electrical equipment in real time; the calculation formula of carbon dioxide and carbon dioxide emissions: in household electricity, the carbon dioxide emissions (kg ) is equal to the degree of electricity consumption multiplied by 0.785, carbon dioxide emission (unit: Kg) = current (unit: A) * voltage (unit: V) / 1000 * time (unit: h) * 0.785. Power factor refers to the ratio of the active power to the apparent power of the AC circuit. Under a certain voltage and power of user electrical equipment, the higher the value, the better the benefit, and the more fully the power generation equipment can be used. At present, the power factor regulation in China must be between 0.9 and 1 inductive. Chip models: ①, power conversion chip AC/DC OB2222M (Angbao)②, 3.3V voltage regulator chip LM1117 (ST)③, MCU chip ATT7039 (Juquan Optoelectronics)④, WIFI module ML-M02N (Hangzhou Miaolian) ⑤, charged erasable programmable read-only memory AT24C02 (Atmel) ⑥, infrared emission tube TSAL6100 (VISHAY).

Preferably, it also includes a mobile terminal and a PC terminal, and the mobile terminal and the PC terminal are both connected to the cloud server or the mobile terminal and the PC terminal are directly connected to the WIFI communication module.

Referring to Figure 3: In a specific example, the AC/DC power supply chip and the voltage regulator chip are integrated into the power supply circuit board 1, the MCU, the infrared emission module, the EEPROM memory, the backlight source, the WIFI communication module and the key input module Integrated into a control board 2, the power circuit board 1 is inserted into the plastic part of the lower shell 3 of the plug body according to the position of the mains plug hole, and is fastened with a clip; the power circuit board 1 is plugged into the power cord to connect terminal, and insert the upper control board 2 at the pin position, the upper control board 2 is clamped by the upper shell 4 of the plug body, and the upper shell 4 and the lower shell 3 are welded by ultrasonic welding. one.

The plug of this embodiment is simple in structure, reasonable in space utilization, and convenient in installation.

Example 2

Referring to Figures 2, 4, and 6: an intelligent power cord plug, involving an electrical device body, including a plug body connected to the electrical device body and a cloud server, and an AC/DC power supply chip, stable Voltage chip, metering chip, infrared emission module, WIFI communication module and key input module, the AC/DC power chip is connected with the mains 220V AC to generate the power DC 5V, and the power DC 5V is converted into a power supply through the voltage regulator chip DC 3.3V, the metering chip is used to collect the voltage and current information of AC 220V AC in real time, the infrared emission module, key input module and metering chip are all connected with the WIFI communication module, and the power supply DC 5V is connected to the infrared emission module Connected to provide power, the power supply DC 3.3V is connected to the key input module, the WIFI communication module and the metering chip to provide power, the electrical equipment body is provided with an infrared receiving module matching the infrared transmitting module, so The WIFI communication module is connected with the cloud server.

It should be noted that the beneficial effects of this embodiment are basically the same as those of Embodiment 1. The difference is that this embodiment uses a metering chip to monitor information such as voltage and current, and cancels the liquid crystal display screen and the MCU module. For example, directly connect the WIFI communication module through the mobile terminal, send control commands through the infrared emission module to control the corresponding electrical equipment; or input the control commands through key input.

In a specific implementation, this embodiment can monitor the current/voltage/power/power factor/accumulated electricity/carbon dioxide emissions and other values of the electrical equipment in real time; the calculation formula of carbon dioxide and carbon dioxide emissions: in household electricity, the carbon dioxide emissions (kg ) is equal to the degree of electricity consumption multiplied by 0.785, carbon dioxide emission (unit: Kg) = current (unit: A) * voltage (unit: V) / 1000 * time (unit: h) * 0.785. Power factor refers to the ratio of the active power to the apparent power of the AC circuit. Under a certain voltage and power of user electrical equipment, the higher the value, the better the benefit, and the more fully the power generation equipment can be used. At present, the power factor regulation in China must be between 0.9 and 1 inductive. Chip models: ①, power conversion chip AC/DC OB2222M (Angbao)②, 3.3V voltage regulator chip LM1117 (ST)③, voltage and current measurement chip BL0739 (Belling)④, WIFI module and main MCU ML-M02N ( Hangzhou Miaolian) ⑤, infrared emission tube TSAL6100 (VISHAY).

Preferably, it also includes a mobile terminal and a PC terminal, and the mobile terminal and the PC terminal are both connected to the cloud server or the mobile terminal and the PC terminal are directly connected to the WIFI communication module.

Preferably, it also includes a two-color indicator light, the power supply DC 5V is connected to the two-color indicator light to provide power, and the two-color indicator light is connected to the WIFI communication module to display the WIFI connection status information.

In this embodiment, the connection status of the WIFI communication module can be checked at any time through the two-color indicator light. For example, when the indicator light is red, it proves that the WIFI connection is not successful, and when the indicator light is green, it proves that the WIFI connection is successful.

Referring to FIG. 4: In a specific example, the AC/DC power supply chip, voltage regulator chip, metering chip, infrared emission module, WIFI communication module and key input module are integrated into a power supply circuit board 1, and the power supply circuit board 1 Insert into the lower shell 3 plastic part of the plug body according to the position of the mains plug hole, and fasten it with a clip; the power circuit board 1 is plugged into the power cable connection terminal, and the lower shell 3 plastic part passes through the plug The upper shell 4 of the main body is clamped tightly by the fastener, and the upper shell 4 and the lower shell 3 are integrated by ultrasonic welding.

In this embodiment, the circuit control board is eliminated, the plug structure is simpler, the space utilization is reasonable, and the installation is convenient.

The hardware function principle of the present invention is introduced: 1. The AC/DC switching power supply uses a non-isolation scheme to convert 220V alternating current into 5V (300mA) direct current through the AC/DC power supply chip. The output mainly supplies power to EEPROM memory, liquid crystal backlight (liquid crystal version) , 3.3V voltage regulator chip, infrared emission tube, distribution network indicator (non-LCD version), touch buttons, 3.3V voltage regulator chip mainly supplies power to the main control chip (LCD version), WiFi module, single-phase metering chip (non-LCD version) LCD version); 2. The current sampling passes the voltage differential signal of the manganin sampling resistor to the ADC sampling chip, and the current current value is calculated by the software to achieve real-time monitoring of the current consumption current of the current electrical equipment; 3. The voltage sampling is performed by a large power The resistance is divided in series to obtain the differential signal between the voltage value and the digital ground, and the ADC sampling chip calculates the current voltage value, so as to achieve real-time monitoring of the input voltage of the current electrical equipment; ④. Key input to query all the currently measured parameters (LCD version), and can also perform functions such as WiFi module network configuration/self-check; ⑤, WiFi communication module is a WiFi dedicated chip and MCU serial communication to transmit monitoring parameters to the data cloud, and then It is remotely displayed by the mobile phone APP, and the data is transmitted to the cloud for storage to form a background data report; ⑥, LCD version: the main chip control mainly includes the drive part of the LCD display, the output of the infrared emission tube, the current sampling value, the voltage sampling value, and the button input. , WiFi communication data, LCD backlight control, EEPROM data storage; ⑦, non-LCD version: the main logic is controlled by the chip in the WiFi module, mainly including infrared emission tube output, current sampling, voltage sampling, key input, WiFi data communication; ⑧. The infrared emission output is to output the frequency infrared control signal of 37.9KHz. When the mobile phone is remotely controlled, it is sent to the WiFi module through the APP operation command, and the control command is transmitted to the MCU or WiFi module to directly control the infrared emission tube to send out the corresponding infrared control signal. The power cord As long as there is an infrared receiver on the connected device, it can receive the control signal code sent by the power plug to change the current operating state (mode, wind speed, heating, etc.) of the electrical equipment. ⑨. At present, users choose four specifications: 10A/250V (with or without LCD) and 16A/250V (with or without LCD). There are many adapter ports for electrical equipment and strong selectivity.

The software functions and control principles of the present invention are introduced: 1. LCD version: double-click the button, when one or two digits of the LCD digital area flashes and displays "NE", the WIFI module enters the network distribution mode, and returns to normal display after flashing every 1 second for 15 seconds. When connected to the router, the wifi indicator icon is off; when connected to the router but not connected to the server, the wifi indicator flashes every 1 second; when the router and server are connected, the wifi indicator icon is always on; The current input voltage, click the button to display circularly: voltage→current→power→power factor→cumulative power→frequency→CO ² displacement, the units corresponding to different parameters also change with the function; long press the button, 3 seconds after power-on Release, the main board enters the self-test mode, send the "production test" command in the protocol, when the value of "WIFI production test signal notification" is 0002 from the main board, the WIFI indicator icon on the LCD screen is always on, and when it is 00 01, the LCD screen The WIFI indicator icon flashes, when 00 00, the WIFI indicator icon on the LCD screen does not light; for non-LCD version: double-click the button, the WIFI module enters the network configuration mode, the green light flashes at an interval of 0.5 seconds and then returns to normal display after 15 seconds, if it is not connected to the router, the wifi The indicator icon does not light up, if it is connected to the router but not connected to the server, the wifi green indicator flashes every 1 second, and the wifi green indicator light is always on when the router and server are connected. ②. Use the wifi communication protocol to transmit the detected data to the wifi module through the serial port, and then transmit it to the cloud through the wifi module and transmit it to the mobile APP and PC through the cloud. The APP can check the real-time voltage, current, Frequency, power, electricity, carbon dioxide emissions and other information can form a bar graph of electricity consumption, and other information can form a corresponding report in the background of the PC for users to log in and check at any time. ③. At present, all versions support infrared emission control module. The APP software control interface sends the control signal to the cloud through the mobile phone, and then sends the control signal to the wifi module through the cloud, and transmits it to the MCU through the serial port. The MCU or wifi module chip software passes the timing When the device is turned on and off, the control signal of 37.9KHz frequency is sent to the electrical equipment.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (10)

1. An intelligent power cord plug, relating to an electrical equipment body, characterized in that it includes a plug body and a cloud server that are connected to the electrical equipment body, and an AC/DC power supply chip, a voltage regulator chip are installed in the plug body , MCU, infrared emission module, EEPROM memory, backlight, WIFI communication module and key input module, the AC/DC power chip is connected with the mains 220V AC to generate the power DC 5V, and the power DC 5V passes through the voltage regulator chip It is converted into a power supply of 3.3V DC, and the MCU is integrated with a voltage and current sampling module. The voltage and current sampling module is used to collect the voltage and current information of the 220V AC power supply in real time. The backlight source, infrared emission module, EEPROM The memory, the key input module and the WIFI communication module are all connected to the MCU, the DC 5V power supply is connected to the backlight, the infrared emission module and the EEPROM memory for providing power, and the DC 3.3V power supply is connected to the key input module and the WIFI communication module It is used to provide power, the body of the electrical equipment is provided with an infrared receiving module matched with the infrared transmitting module, and the WIFI communication module is connected to the cloud server. 2. The smart power cord plug according to claim 1, further comprising a mobile terminal and a PC terminal, the mobile terminal and the PC terminal are both connected to a cloud server or the mobile terminal and the PC terminal communicate directly with WIFI modules are connected. 3. The intelligent power cord plug according to claim 1, wherein the AC/DC power supply chip and the voltage regulator chip are integrated into a power supply circuit board (1), the MCU, the infrared emission module, the EEPROM memory, the backlight The source, the WIFI communication module and the key input module are integrated into a control board (2). 4. The intelligent power cord plug according to claim 3, characterized in that the power circuit board (1) is inserted into the plastic part of the lower shell (3) of the plug body according to the position of the mains plug hole, and is inserted into the plastic part of the lower shell (3) of the plug body with a card The fastener is fastened; the power supply circuit board (1) is plugged into the power cord connection terminal, and the upper control board (2) is inserted at the pin position, and the upper control board (2) passes through the upper shell of the plug body. (4) The clip is clamped tightly. 5 . The smart power cord plug according to claim 4 , wherein the upper shell ( 4 ) and the lower shell ( 3 ) are integrated by ultrasonic welding. 6 . 6. An intelligent power cord plug, which relates to an electrical device body, characterized in that it comprises a plug body connected to the electrical device body and a cloud server, and an AC/DC power supply chip and a voltage regulator chip are installed in the plug body. , metering chip, infrared emission module, WIFI communication module and key input module, the AC/DC power supply chip is connected with the mains 220V AC to generate the power supply DC 5V, and the power supply DC 5V is converted into the power supply DC 3.3 through the voltage regulator chip V, the metering chip is used to collect the voltage and current information of AC 220V AC in real time, the infrared emission module, the key input module and the metering chip are all connected with the WIFI communication module, and the DC 5V power supply is connected with the infrared emission module for use In order to provide power, the power supply DC 3.3V is connected with the key input module, the WIFI communication module and the metering chip to provide power. The communication module is connected with the cloud server. 7. The smart power cord plug according to claim 6, further comprising a mobile terminal and a PC terminal, the mobile terminal and the PC terminal are both connected to a cloud server or the mobile terminal and the PC terminal communicate directly with WIFI modules are connected. 8 . The smart power cord plug according to claim 6 , further comprising a two-color indicator light, the power supply DC 5V is connected to the two-color indicator light for providing power, and the two-color indicator light is connected to the WIFI communication module for use. 9 . to display WIFI connection status information. 9. The smart power cord plug according to claim 6, wherein the AC/DC power supply chip, voltage regulator chip, metering chip, infrared emission module, WIFI communication module and key input module are integrated into a power supply circuit board ( 1). 10. The intelligent power cord plug according to claim 9, characterized in that the power circuit board (1) is inserted into the plastic part of the lower shell (3) of the plug body according to the position of the mains plug hole, and is inserted into the plastic part of the lower shell (3) of the plug body, The fasteners are fastened; the power supply circuit board (1) is plugged into the power cord connection terminals, the plastic parts of the lower case (3) are fastened by the fasteners of the upper case (4) of the plug body, and the upper case (4) is fastened. 4) It is integrated with the lower shell (3) by ultrasonic welding.

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