Intelligent patch board circuit and intelligent patch board

Abstract

The embodiment of the utility model provides an intelligent patch board circuit and an intelligent patch board, and belongs to the technical field of patch boards, the intelligent patch board circuit comprises a mains supply interface, an MCU module, a power socket control module, a metering detection module and a power supply module; the commercial power interface comprises an input N end and an input L end; the MCU module is used for remotely communicating with an upper computer, so that a user can remotely control the power socket control module to supply power to electric equipment or cut off power from the electric equipment; the metering detection module is respectively connected with the power socket and the MCU module; the power supply module comprises a first power supply circuit and a second power supply circuit, the first power supply circuit is respectively connected with the commercial power interface, the MCU module and the other end of the coil of the relay, and the second power supply circuit is respectively connected with the commercial power interface and the metering detection module. According to the embodiment of the invention, energy waste can be avoided and potential safety hazards can be reduced.

Description

Technical Field

[0001] This application relates to the field of power strip technology, and more particularly to a smart power strip circuit and a smart power strip. Background Technology

[0002] The power strip includes a power cord, a power cord plug, and multiple sockets, allowing connection to more than one electrical device. The power cord plug connects to the mains power, and the power strip acts as an extension cord for the sockets, enabling one-to-many socket expansion. It can power devices such as computers, hair dryers, fans, and televisions, saving space, expanding socket capacity, and reducing wiring.

[0003] Most power strips on the market today use individual switches. Users press the switch on the power strip to control the power supply and disconnection of household appliances connected to the socket. However, it is common for users to leave their appliances plugged into the power strip when they are away from home, resulting in energy waste, safety hazards, and a negative impact on the user experience.

[0004] Therefore, there is an urgent need to design an intelligent power strip circuit that can avoid energy waste and reduce safety hazards. Utility Model Content

[0005] The purpose of this utility model is to at least solve one of the technical problems existing in the prior art, and to provide an intelligent power strip circuit and an intelligent power strip that can avoid energy waste and reduce safety hazards.

[0006] To achieve the above objectives, in a first aspect, this application proposes an intelligent power strip circuit, comprising: a mains power interface, an MCU module, a power socket control module, a metering and detection module, and a power supply module; the mains power interface includes an input N terminal and an input L terminal; the MCU module is used for remote communication with a host computer; the power socket control module includes a power socket, a relay, and a first MOSFET, the power socket is connected to the input N terminal and the normally closed contact of the relay, the normally open contact of the relay is connected to the input L terminal, one end of the coil of the relay is connected to the collector of the first MOSFET, the emitter of the first MOSFET is grounded, and the base of the first MOSFET is connected to the MCU module; the metering and detection module is connected to the power socket and the MCU module; the power supply module includes a first power supply circuit and a second power supply circuit, the first power supply circuit is connected to the mains power interface, the MCU module, and the other end of the coil of the relay, and the second power supply circuit is connected to the mains power interface and the metering and detection module.

[0007] In some embodiments, the metering and detection module includes a metering and detection chip, a first transient voltage suppression diode, a second transient voltage suppression diode, and a third transient voltage suppression diode. A first port of the metering and detection chip is connected to one end of the power socket and one end of the first transient voltage suppression diode, with the other end of the first transient voltage suppression diode grounded. A second port of the metering and detection chip is connected to the normally open contact of the relay and one end of the second transient voltage suppression diode, with the other end of the second transient voltage suppression diode grounded. A third port of the metering and detection chip is connected to one end of the third transient voltage suppression diode and the second power supply circuit, with the other end of the third transient voltage suppression diode grounded. A fourth, fifth, and sixth port of the metering and detection chip are all connected to the MCU module.

[0008] In some embodiments, the first power supply circuit includes a rectifier bridge, an isolated power module, and a transformer. The AC input terminal of the rectifier bridge is connected to the mains interface. The isolated power module is connected to the first coil of the transformer, the second coil of the transformer, and the positive output terminal of the rectifier bridge. The third coil of the transformer is connected to the MCU module and another coil contact of the relay.

[0009] In some embodiments, the second power supply circuit includes a step-down chip, a first capacitor, a first inductor, and a second inductor. One end of the first inductor is connected to the input L terminal, and the other end of the first inductor is connected to one end of the first capacitor and a first port of the step-down chip. The second port of the step-down chip is connected to one end of the second inductor, and the third port of the step-down chip is connected to the other end of the second inductor and the metering and detection module. The input N terminal and the other end of the first capacitor are grounded.

[0010] In some embodiments, a signal transmission module is further included, the signal transmission module including a first optocoupler, a second optocoupler and a third optocoupler, the first optocoupler being connected to the receiving end of the metering and detection module and the transmitting end of the MCU module, the second optocoupler being connected to the transmitting end of the metering and detection module and the receiving end of the MCU module, and the third optocoupler being connected to the interrupt end of the metering and detection module and the output end of the MCU module.

[0011] In some embodiments, a step-down module is further included, which is connected to the first power supply circuit and the MCU module respectively.

[0012] In some embodiments, a touch switch module is further included, which is connected to the first power supply circuit and the MCU module respectively.

[0013] In some embodiments, an indicator light module is further included, which is connected to the first power supply circuit and the MCU module respectively.

[0014] In some embodiments, the indicator module includes a light-emitting diode module and a second MOSFET. The light-emitting diode module is connected to the first power supply circuit and the collector of the second MOSFET, respectively. The base of the second MOSFET is connected to the MCU module, and the emitter of the second MOSFET is grounded.

[0015] Secondly, embodiments of this application propose an intelligent power strip, including an intelligent power strip circuit as described in any one of the embodiments of the first aspect and a housing, wherein the intelligent power strip circuit is built into the housing.

[0016] According to the embodiments of this utility model, a smart power strip circuit and a smart power strip have at least the following beneficial effects: The MCU module is used for remote communication with a host computer, receiving instructions from the host computer to enable the user to remotely control the power socket control module to supply power or cut off power to the electrical equipment, thereby avoiding energy waste and reducing safety hazards; specifically, the power socket is used to plug in the electrical equipment, one end of the relay coil is connected to the collector of the first MOSFET, the emitter of the first MOSFET is grounded, and the base of the first MOSFET is connected to the MCU module. When the MCU module outputs a high level to the base of the first MOSFET, the first MOSFET is turned on, the voltage at the other end of the relay coil is higher than the voltage at one end of the relay coil, the relay coil is energized, the relay is energized, and the input L terminal of the relay supplies power to the power socket, causing the electrical equipment plugged into the power socket to start working; conversely, when the MCU module... The block outputs a low level to the base of the first MOSFET, turning it off. This de-energizes the relay coil, disconnecting the AC interface from the power socket. The power socket is then de-energized, causing the connected device to stop working. The metering and detection module is connected to both the power socket and the MCU module. It detects the charging voltage and current of the connected device and sends this information to the MCU module. The first power supply circuit is connected to the AC interface, the MCU module, and the other end of the relay coil. It converts the high-voltage AC power from the AC interface into low-voltage DC power for the MCU module and the relay. The second power supply circuit is also connected to the AC interface and the metering and detection module. It converts the high-voltage AC power from the AC interface into low-voltage DC power for the metering and detection module. Attached Figure Description

[0017] The accompanying drawings are provided to further understand the technical solution of this utility model and constitute a part of the specification. They are used together with the embodiments of this utility model to explain the technical solution of this utility model, and do not constitute a limitation on the technical solution of this utility model.

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is a system architecture diagram of an intelligent power strip circuit provided in an embodiment of the present invention;

[0020] Figure 2 This is a schematic diagram illustrating the connection between the power socket control module and the metering detection module in an intelligent power strip circuit provided by this utility model embodiment;

[0021] Figure 3 This is a schematic diagram of a power supply module in an intelligent power strip circuit provided by an embodiment of the present utility model;

[0022] Figure 4 This is a schematic diagram of an MCU module in an intelligent power strip circuit provided by an embodiment of the present invention;

[0023] Figure 5 This is a schematic diagram of a signal transmission module in an intelligent power strip circuit provided by an embodiment of the present invention;

[0024] Figure 6 This is a schematic diagram of a step-down module in an intelligent power strip circuit provided by an embodiment of this utility model;

[0025] Figure 7 This is a schematic diagram of a touch switch module in an intelligent power strip circuit provided by an embodiment of the present invention;

[0026] Figure 8 This is a schematic diagram of an indicator light module in a smart power strip circuit provided by an embodiment of this utility model. Detailed Implementation

[0027] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0028] In the description of this utility model, the use of "first" and "second" is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features or the order of the technical features.

[0029] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0030] Most power strips on the market today use individual switches. Users press the switch on the power strip to control the power supply and disconnection of household appliances connected to the socket. However, it is common for users to leave their appliances plugged into the power strip when they are away from home, resulting in energy waste, safety hazards, and a negative impact on the user experience.

[0031] Based on this, the present invention provides an intelligent power strip circuit and an intelligent power strip, which can avoid energy waste and reduce safety hazards.

[0032] The embodiments of this utility model will be further described below with reference to the accompanying drawings.

[0033] Reference Figure 1 , Figure 2 , Figure 3 as well as Figure 4 In a first aspect, this utility model provides an intelligent power strip circuit, comprising: a mains power interface 100, an MCU module 200, a power socket control module 300, a metering and detection module 400, and a power supply module 500; the mains power interface 100 includes an input N terminal and an input L terminal; the MCU module 200 is used for remote communication with a host computer; the power socket control module 300 includes a power socket 310, a relay K1, and a first MOSFET Q1, the power socket 310 being connected to the input N terminal and the normally closed contact of the relay K1, the normally open contact of the relay K1 being connected to the input L terminal, and the relay K1 being connected to the input L terminal. One end of the coil of 1 is connected to the collector of the first MOSFET Q1, the emitter of the first MOSFET Q1 is grounded, and the base of the first MOSFET Q1 is connected to the MCU module 200; the metering and detection module 400 is connected to the power socket 310 and the MCU module 200 respectively; the power supply module 500 includes a first power supply circuit 510 and a second power supply circuit 520. The first power supply circuit 510 is connected to the mains interface 100, the MCU module 200 and the other end of the coil of the relay K1 respectively, and the second power supply circuit 520 is connected to the mains interface 100 and the metering and detection module 400 respectively.

[0034] It should be noted that when the MCU module 200 receives a power-on command from the host computer, the MCU module 200 outputs a high level to the base of the first MOSFET Q1, thereby causing the relay K1 to supply power to the power socket 310. Furthermore, electrical devices plugged into the power socket 310, such as electric mosquito repellents, table lamps, and electric fans, will be started and operated. When the MCU module 200 receives a power-off command from the host computer, the MCU module 200 outputs a low level to the base of the first MOSFET Q1, causing the first MOSFET Q1 to turn off. This causes the relay K1 to disconnect the connection between the power socket 310 and the mains interface 100, de-energizing the power socket 310. Furthermore, electrical devices plugged into the power socket 310, such as electric mosquito repellents, table lamps, and electric fans, will stop operating. Therefore, even when users are away from home, they can remotely control the power on and off of electrical devices plugged into the power socket 310 at home using a portable host device such as a mobile phone or computer, improving electrical safety and enhancing the user experience.

[0035] Understandably, the host computer can be a mobile phone, computer, or tablet. Taking a mobile phone as an example, the app interface on the phone can set countdown on / off and child lock functions. For example, when the countdown on function is set, when the time reaches 3:00 PM, the app sends the power-on information to the backend server. The server then sends information to the MCU module 200. When the MCU module 200 receives the power-on command from the host computer, it outputs a high level to the base of the first MOSFET Q1, thereby enabling the relay K1 to supply power to the power socket 310. In addition, users can also view the charging power and power consumption of electrical devices on the app interface on the mobile phone, allowing them to monitor the power consumption of electrical devices in real time, identify potential power waste, and adjust their usage habits to reduce unnecessary expenses.

[0036] It should be noted that, referring to Figure 4 The MCU module 200 includes a control chip U1 that integrates WIFI and Bluetooth functions. When the mains power is connected to the mains power interface 100 of the smart power strip circuit, the first power supply circuit 510 powers on the MCU module 200. If the host computer is a mobile phone, the mobile phone APP and Bluetooth are opened. After the MCU module 200 connects to the APP via Bluetooth, it provides a WIFI network to the smart power strip circuit, thereby enabling the MCU module 200 to communicate remotely with the host computer.

[0037] In some embodiments, refer to Figure 2 One end of the power socket 310 is connected to the input N terminal through the first resistor.

[0038] In some embodiments, refer to Figure 2The metering and detection module 400 includes a metering and detection chip U2, a first transient voltage suppression diode TVS1, a second transient voltage suppression diode TVS2, and a third transient voltage suppression diode TVS3. The first port of the metering and detection chip U2 is connected to one end of the power socket 310 and one end of the first transient voltage suppression diode TVS1, and the other end of the first transient voltage suppression diode TVS1 is grounded. The second port of the metering and detection chip U2 is connected to the normally open contact of the relay K1 and one end of the second transient voltage suppression diode TVS2, and the other end of the second transient voltage suppression diode TVS2 is grounded. The third port of the metering and detection chip U2 is connected to one end of the third transient voltage suppression diode TVS3 and the second power supply circuit 520, and the other end of the third transient voltage suppression diode TVS3 is grounded. The fourth, fifth, and sixth ports of the metering and detection chip U2 are all connected to the MCU module 200.

[0039] It should be noted that the first port of the metering and detection chip U2 is connected to one end of the power socket 310, and the second port of the metering and detection chip U2 is connected to the normally open contact of the relay K1. When the MCU module 200 controls the coil of the relay K1 to conduct through the first MOSFET Q1, the metering and detection chip U2 can obtain the voltage and current of the electrical equipment plugged into the power socket 310. The fourth, fifth, and sixth ports of the metering and detection chip U2 are all connected to the MCU module 200 to receive instructions from the MCU module 200 and transmit the obtained voltage and current information to the MCU module 200. The third port of the metering and detection chip U2 is connected to the second power supply circuit 520 to obtain the power provided by the second power supply circuit 520 to maintain normal operation.

[0040] Furthermore, the first transient voltage suppression diode TVS1, the second transient voltage suppression diode TVS2, and the third transient voltage suppression diode TVS3 can protect the metering and detection chip U2 from damage by transient high voltage, which helps to extend the service life of the metering and detection chip U2.

[0041] In some embodiments, refer to Figure 2 The metering and detection module 400 also includes a voltage divider module 410, which includes multiple resistors. The input terminal of the voltage divider module 410 is connected to the normally open contact of the relay K1, the output terminal of the voltage divider module 410 is connected to the second port of the metering and detection chip U2, and the ground terminal of the voltage divider module 410 is grounded.

[0042] In some embodiments, refer to Figure 2The metering and detection module 400 also includes a filter module 420, which consists of resistors and capacitors. The input terminal of the filter module 420 is connected to one end of the power socket 310, and the output terminal of the filter module 420 is connected to the first port of the metering and detection chip U2, thereby reducing the interference of high-frequency signals on the circuit and making the circuit operation more stable.

[0043] In some embodiments, refer to Figure 3 The first power supply circuit 510 includes a rectifier bridge DB1, an isolation power module 511, and a transformer PP1. The AC input terminal of the rectifier bridge DB1 is connected to the mains interface 100. The isolation power module 511 is connected to the first coil of the transformer PP1, the second coil of the transformer PP1, and the positive output terminal of the rectifier bridge DB1. The third coil of the transformer PP1 is connected to the MCU module 200 and another coil contact of the relay K1.

[0044] It should be noted that the AC input terminal of rectifier bridge DB1 is connected to the mains interface 100, that is, the AC input terminal of rectifier bridge DB1 is connected to the input N terminal and the input L terminal respectively. Rectifier bridge DB1 is used to convert the high-voltage AC power provided by the mains into high-voltage DC power. The isolation power module 511 is connected to the first coil of transformer PP1, the second coil of transformer PP1 and the positive output terminal of rectifier bridge DB1 respectively. The high-voltage DC power output of rectifier bridge DB1 and the low-voltage DC power output of transformer PP1 are electrically isolated through the isolation power module 511, which can avoid electric shock accidents caused by high-voltage leakage and prevent circuit damage, improve the safety of circuit operation and the service life of the circuit. The third coil of transformer PP1 is connected to the MCU module 200 and the other coil contact of relay K1 respectively. The low-voltage DC power output of the third coil of transformer PP1 is used by MCU module 200.

[0045] In some embodiments, refer to Figure 3 The isolated power supply module 511 includes an isolated power supply chip U3, resistors, diodes, and capacitors, with the connection relationships of the relevant components as follows: Figure 3 As shown.

[0046] In some embodiments, refer to Figure 3 The second power supply circuit 520 includes a step-down chip U4, a first capacitor C1, a first inductor L1, and a second inductor L2. One end of the first inductor L1 is connected to the input L terminal, and the other end of the first inductor L1 is connected to one end of the first capacitor C1 and the first port of the step-down chip U4. The second port of the step-down chip U4 is connected to one end of the second inductor L2, and the third port of the step-down chip U4 is connected to the other end of the second inductor L2 and the metering and detection module 400. The input N terminal and the other end of the first capacitor C1 are grounded.

[0047] It should be noted that in the second power supply circuit 520, the step-down chip U4 is used to convert the high-voltage AC power supplied by the mains into low-voltage DC power for use by the metering and detection module 400, and the first inductor L1 and the second inductor L2 are used for energy storage.

[0048] It should be noted that the second power supply circuit 520 also includes a fuse F1, which is connected to one end of the first inductor L1 and the input L terminal. The fuse F1 is used to implement overcurrent protection and improve the stability of circuit operation.

[0049] In some embodiments, the second power supply circuit 520 further includes a resistor and a diode, the diode being used to implement reverse protection, wherein the connection relationship of the relevant components is as follows: Figure 3 As shown.

[0050] In some embodiments, refer to Figure 5 It also includes a signal transmission module 600, which includes a first optocoupler U5, a second optocoupler U6, and a third optocoupler U7. The first optocoupler U5 is connected to the receiving end of the metering and detection module 400 and the transmitting end of the MCU module 200, respectively. The second optocoupler U6 is connected to the transmitting end of the metering and detection module 400 and the receiving end of the MCU module 200, respectively. The third optocoupler U7 is connected to the interrupt end of the metering and detection module 400 and the output end of the MCU module 200, respectively.

[0051] It should be noted that the first optocoupler U5 is connected to the receiving end of the metering and detection module 400 and the transmitting end of the MCU module 200, respectively; the second optocoupler U6 is connected to the transmitting end of the metering and detection module 400 and the receiving end of the MCU module 200, respectively, to realize direct communication between the MCU module 200 and the metering and detection module 400; the third optocoupler U7 is connected to the interrupt end of the metering and detection module 400 and the output end of the MCU module 200, respectively, to realize rapid response to external events and improve the reliability of circuit operation.

[0052] In some embodiments, refer to Figure 2 , Figure 5The metering and detection module 400 includes a metering and detection chip U2, a first transient voltage suppression diode TVS1, a second transient voltage suppression diode TVS2, and a third transient voltage suppression diode TVS3. The first port of the metering and detection chip U2 is connected to one end of the power socket 310 and one end of the first transient voltage suppression diode TVS1, with the other end of the first transient voltage suppression diode TVS1 grounded. The second port of the metering and detection chip U2 is connected to the normally open contact of the relay K1 and one end of the second transient voltage suppression diode TVS2, with the other end of the second transient voltage suppression diode TVS2 grounded. The third port of the metering and detection chip U2 is connected to one end of the third transient voltage suppression diode TVS3 and the second transient voltage suppression diode TVS3. The power supply circuit 520 is connected, and the other end of the third transient voltage suppression diode TVS3 is grounded. The fourth, fifth, and sixth ports of the metering and detection chip U2 are connected to the MCU module 200 through the signal transmission module 600. Specifically, the signal transmission module 600 includes a first optocoupler U5, a second optocoupler U6, and a third optocoupler U7. The first optocoupler U5 is connected to the fourth port of the metering and detection chip U2 and the transmitting end of the MCU module 200, respectively. The second optocoupler U6 is connected to the fifth port of the metering and detection chip U2 and the receiving end of the MCU module 200, respectively. The third optocoupler U7 is connected to the sixth port of the metering and detection chip U2 and the output end of the MCU module 200, respectively.

[0053] In some embodiments, refer to Figure 6 It also includes a step-down module 700, which is connected to the first power supply circuit 510 and the MCU module 200 respectively.

[0054] It should be noted that the low-voltage DC output of the first power supply circuit 510 is generally 5V, while the power supply voltage required by the MCU module 200 is generally 3.3V. Therefore, the low-voltage DC output of the first power supply circuit 510 needs to be further reduced to 3.3V by the step-down module 700 before it can be supplied to the MCU module 200.

[0055] In some embodiments, refer to Figure 7 It also includes a touch switch module 800, which is connected to the first power supply circuit 510 and the MCU module 200 respectively.

[0056] Understandably, the touch switch module 800 is connected to the first power supply circuit 510, which outputs low-voltage DC power to the touch switch module 800. The touch switch module 800 is also connected to the MCU module 200. When the touch switch module 800 is triggered to turn on, the MCU module 200 receives the trigger signal and outputs a high level to the base of the first MOSFET Q1, causing the first MOSFET Q1 to conduct. This activates the relay K1, and the AC power interface 100 provides power to the power socket 310, allowing the device plugged into the power socket 310 to start working. Conversely, when the touch switch module 800 is triggered to turn off, the MCU module 200 receives the trigger signal and outputs a low level to the base of the first MOSFET Q1, causing the first MOSFET Q1 to turn off. This disconnects the relay K1 from the AC power interface 100 and the power socket 310, stopping the device plugged into the power socket 310 from working.

[0057] It should be noted that the touch switch module 800 includes a touch chip and a capacitor. Compared with traditional switch buttons, the touch chip eliminates the need for forceful pressing, resulting in a lighter feel. Its touch surface can be completely sealed, making it suitable for humid and oily environments.

[0058] In some embodiments, refer to Figure 8 It also includes an indicator light module 900, which is connected to the first power supply circuit 510 and the MCU module 200 respectively.

[0059] It should be noted that the indicator light module 900 is used to prompt the user that the MCU module 200 is communicating remotely with the host computer. When the MCU module 200 successfully connects wirelessly with the host computer, the MCU module 200 outputs a high level to turn on the indicator light module 900.

[0060] In some embodiments, refer to Figure 8 The indicator module 900 includes a light-emitting diode module 910 and a second MOSFET Q2. The light-emitting diode module 910 is connected to the first power supply circuit 510 and the collector of the second MOSFET Q2, respectively. The base of the second MOSFET Q2 is connected to the MCU module 200, and the emitter of the second MOSFET Q2 is grounded.

[0061] It should be noted that the LED module 910 contains multiple LEDs. After the MCU module 200 successfully connects wirelessly to the host computer, the MCU module 200 outputs a high level to the base of the second MOSFET Q2, causing the second MOSFET Q2 to conduct, which in turn causes the LED to conduct and emit light to alert the user.

[0062] Secondly, embodiments of this application propose an intelligent power strip, including an intelligent power strip circuit as described in any of the embodiments of the first aspect and a housing, wherein the intelligent power strip circuit is built into the housing.

[0063] According to an embodiment of this utility model, an intelligent power strip circuit and an intelligent power strip are provided. The MCU module 200 is used for remote communication with a host computer and receives instructions from the host computer, enabling the user to remotely control the power socket control module 300 to supply power or cut off power to the electrical equipment, thereby avoiding energy waste and reducing safety hazards. Specifically, the power socket 310 is used to plug in the electrical equipment. One end of the coil of the relay K1 is connected to the collector of the first MOSFET Q1, the emitter of the first MOSFET Q1 is grounded, and the base of the first MOSFET Q1 is connected to the MCU module 200. When the MCU module 200 outputs a high level to the base of the first MOSFET Q1, the first MOSFET Q1 is turned on, and the voltage at the other end of the coil of the relay K1 is higher than the voltage at one end of the coil of the relay K1. The coil of the relay K1 is energized, and the relay K1 pulls in its input L terminal to supply power to the power socket 310, causing the electrical equipment plugged into the power socket 310 to start working. Conversely, when the MCU module 200 outputs a low level to the base of the first MOSFET Q1, the first MOSFET Q1 is turned on, and the voltage at the other end of the coil of the relay K1 is higher than the voltage at the other end of the coil of the relay K1. The coil of the relay K1 is energized, and the relay K1 pulls in its input L terminal to supply power to the power socket 310, causing the electrical equipment plugged into the power socket 310 to start working. When S-tube Q1 is cut off, the coil of relay K1 is not energized, and relay K1 disconnects the connection between the mains interface 100 and the power socket 310. The power socket 310 is de-energized, causing the electrical equipment plugged into it to stop working. The metering and detection module 400 is connected to both the power socket 310 and the MCU module 200. The metering and detection module 400 detects the charging voltage and charging current of the electrical equipment plugged into the power socket 310 and sends this information to the MCU module 200. The first power supply circuit 510 is connected to the mains interface 100, the MCU module 200, and the other end of the coil of relay K1. The first power supply circuit 510 converts the high-voltage AC power from the mains interface 100 into low-voltage DC power to supply the MCU module 200 and relay K1. The second power supply circuit 520 is connected to both the mains interface 100 and the metering and detection module 400. The second power supply circuit 520 converts the high-voltage AC power from the mains interface 100 into low-voltage DC power to supply the metering and detection module 400.

[0064] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A smart power strip circuit, characterized in that, include: A mains power interface, which includes an input N terminal and an input L terminal; MCU module, which is used for remote communication with the host computer; A power socket control module includes a power socket, a relay, and a first MOSFET. The power socket is connected to the input N terminal and the normally closed contact of the relay. The normally open contact of the relay is connected to the input L terminal. One end of the relay coil is connected to the collector of the first MOSFET. The emitter of the first MOSFET is grounded. The base of the first MOSFET is connected to the MCU module. A metering and testing module, which is connected to both the power socket and the MCU module; The power supply module includes a first power supply circuit and a second power supply circuit. The first power supply circuit is connected to the mains interface, the MCU module, and the other end of the relay coil, respectively. The second power supply circuit is connected to the mains interface and the metering and detection module, respectively.

2. The intelligent power strip circuit according to claim 1, characterized in that, The metering and detection module includes a metering and detection chip, a first transient voltage suppression diode, a second transient voltage suppression diode, and a third transient voltage suppression diode. The first port of the metering and detection chip is connected to one end of the power socket and one end of the first transient voltage suppression diode, and the other end of the first transient voltage suppression diode is grounded. The second port of the metering and detection chip is connected to the normally open contact of the relay and one end of the second transient voltage suppression diode, and the other end of the second transient voltage suppression diode is grounded. The third port of the metering and detection chip is connected to one end of the third transient voltage suppression diode and the second power supply circuit, and the other end of the third transient voltage suppression diode is grounded. The fourth, fifth, and sixth ports of the metering and detection chip are all connected to the MCU module.

3. The intelligent power strip circuit according to claim 1, characterized in that, The first power supply circuit includes a rectifier bridge, an isolated power supply module, and a transformer. The AC input terminal of the rectifier bridge is connected to the mains interface. The isolated power supply module is connected to the first coil of the transformer, the second coil of the transformer, and the positive output terminal of the rectifier bridge. The third coil of the transformer is connected to the MCU module and another coil contact of the relay.

4. The intelligent power strip circuit according to claim 1, characterized in that, The second power supply circuit includes a step-down chip, a first capacitor, a first inductor, and a second inductor. One end of the first inductor is connected to one end of the first capacitor and the input L terminal, respectively. The other end of the first inductor is connected to the first port of the step-down chip. The second port of the step-down chip is connected to one end of the second inductor. The third port of the step-down chip is connected to the other end of the second inductor and the metering and detection module, respectively. The input N terminal and the other end of the first capacitor are grounded.

5. The intelligent power strip circuit according to claim 1, characterized in that, It also includes a signal transmission module, which includes a first optocoupler, a second optocoupler, and a third optocoupler. The first optocoupler is connected to the receiving end of the metering and detection module and the transmitting end of the MCU module, respectively. The second optocoupler is connected to the transmitting end of the metering and detection module and the receiving end of the MCU module, respectively. The third optocoupler is connected to the interrupt end of the metering and detection module and the output end of the MCU module, respectively.

6. The intelligent power strip circuit according to claim 1, characterized in that, It also includes a step-down module, which is connected to the first power supply circuit and the MCU module respectively.

7. The intelligent power strip circuit according to claim 1, characterized in that, It also includes a touch switch module, which is connected to the first power supply circuit and the MCU module respectively.

8. The intelligent power strip circuit according to claim 1, characterized in that, It also includes an indicator light module, which is connected to the first power supply circuit and the MCU module respectively.

9. The intelligent power strip circuit according to claim 8, characterized in that, The indicator module includes a light-emitting diode module and a second MOSFET. The light-emitting diode module is connected to the first power supply circuit and the collector of the second MOSFET, respectively. The base of the second MOSFET is connected to the MCU module, and the emitter of the second MOSFET is grounded.

10. A smart power strip, characterized in that, It includes the smart power strip circuit and housing as described in any one of claims 1-9, wherein the smart power strip circuit is built into the housing.

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