Novel distribution box controller

Abstract

The utility model relates to the technical field of distribution box control, and specifically discloses a novel distribution box controller comprising a controller body which is provided with a circuit board and a display screen electrically connected with the circuit board. The circuit board comprises an ACDC power conversion circuit, a zero-cross detection circuit, a DCDC power conversion circuit, an RJ45 Ethernet circuit, a temperature and humidity sensor interface circuit, a switching value detection circuit, a relay output control circuit, a buzzer circuit, a wireless remote control circuit, an indicating lamp circuit and an MCU circuit. The ACDC power conversion circuit, the zero cross detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching value detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit are electrically connected with the MCU circuit. The system is high in integration level, reduces the cost, does not need programming, is free of electromagnetic interference through the ACDC power conversion circuit, and prevents the power circuit from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model relates to distribution box control technical field, especially in a kind of novel distribution box controller. BACKGROUND

[0002] Distribution box is according to electrical wiring requirements, switchgear, measuring instrument, protection appliance and auxiliary equipment are assembled in closed or semi-closed metal cabinet or screen, constitute low-voltage distribution box, when normal operation, it can be assisted by hand or automatic switch to connect or break circuit, when fault or not normal operation, it is assisted by protection appliance to cut off circuit or alarm.And distribution box controller is a kind of power distribution and control equipment for electrical equipment in power system, it is mainly responsible for distributing electric energy from main power supply to each electrical equipment, and centralized control and management, controller is mainly suitable for small display screen power supply control, also suitable for school, factory and other power supply purposes.

[0003] Through the retrieval, patent application No. CN202320719002.0 Chinese utility model patent discloses a kind of controller of distribution box, belong to distribution box control technical field, including controller shell, controller shell is by mounting seat and cover body composition, mounting seat is provided with control component group, control component group includes input terminal, current transformer, output disconnecting switch, output terminal, power switch, communication serial port and system control mainboard.The controller designed in the utility model adopts soft control, and the same power distribution box appearance size can be to ultra-thin specification, save space, adopt soft control protection on-off function, durable, not subject to mechanical breaking number of life and electrical on-off number of life limit, can realize manual, automatic, timing switch, central control, wireless remote control multiple control methods, software setting can be set on distribution cabinet panel, also can be set remotely on computer, remote monitoring, distribution box serial port 232 data transmission, also can be through 485 acquisition and data transmission.

[0004] And as patent application No. CN202320758099.6 Chinese utility model patent discloses a kind of distribution box centralized controller, including shell and mounting plate, the control circuit board is fixed in the shell, the wiring hole connected with control circuit board is opened in the outer wall of the shell, the surrounding plate for clamping shell is fixed on the upper surface of the mounting plate, the clamping hole is opened in the both sides of the surrounding plate, the clamping structure connected with clamping hole is equipped on the both sides of the bottom end of the shell, the top end of the shell is designed as open.The utility model, shell, mounting plate, surrounding plate and clamping structure are arranged, the shell can be quickly fixed in the surrounding plate interior by clamping structure, if control circuit board in the shell interior fails, the shell can be quickly disassembled, facilitate overhaul.Secondly, the top cover of the top end of the shell is fixed by compression structure, sealing ring is arranged between the top cover and the shell, which can improve the sealing property of the shell interior and increase the waterproof and dustproof performance of the controller.

[0005] The existing power distribution box controller can meet the basic use requirements, but it uses a traditional PLC controller, which is expensive, and the PLC controller needs to be programmed according to the specific use scene before use as a general device. Although the PLC controller has good expandability, it needs to be equipped with accessories to realize various functions, which is complex to assemble and tedious to wire, and is easily affected by electromagnetic interference of various electrical equipment. When the voltage is too high, the power circuit is easily damaged. The utility model discloses a novel power distribution box controller, which can realize centralized control of the working state of each functional circuit through an MCU circuit, has high integration, reduces cost, does not need programming, and avoids damage to the power circuit through an ACDC power conversion circuit.

[0006] The utility model discloses a novel power distribution box controller, which can realize centralized control of the working state of each functional circuit through an MCU circuit, has high integration, reduces cost, does not need programming, and avoids damage to the power circuit through an ACDC power conversion circuit.

[0007] In order to solve the above technical problems, the technical scheme of the utility model is as follows:

[0008] A novel power distribution box controller, comprising a controller body, a circuit board and a display screen electrically connected to the circuit board are arranged on the controller body, the circuit board comprises an ACDC power conversion circuit, a zero-crossing detection circuit, a DCDC power conversion circuit, an RJ45 Ethernet circuit, a temperature and humidity sensor interface circuit, a switching value detection circuit, a relay output control circuit, a buzzer circuit, a wireless remote control circuit, an indicator lamp circuit and an MCU circuit, and the ACDC power conversion circuit, the zero-crossing detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching value detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit are electrically connected to the MCU circuit.

[0009] Preferably, the ACDC power conversion circuit comprises a power interface J1, a thermistor R19, a common-mode choke coil L6, a capacitor CX1, a power conversion chip U1, a diode D4 and a fuse F1, the thermistor R19 is connected with the power interface J1, the capacitor CX1 and the common-mode choke coil L6 respectively, the common-mode choke coil L6 is connected with the power interface J1, the capacitor CX1 and the power conversion chip U1 respectively, and the diode D4 is connected with the power conversion chip U1 and the fuse F1 respectively.

[0010] Preferably, the MCU circuit comprises a single-chip microcomputer chip U15, an interface P9, a crystal oscillator X2 and a battery BT1, and the interface P9, the crystal oscillator X2 and the battery BT1 are connected with the single-chip microcomputer chip U15.

[0011] Preferably, the circuit board further comprises an RS485 communication circuit, the RS485 communication circuit comprising an RS485 chip U10, a resistor R37, a resistor R44, a voltage stabilizing tube V1, a voltage stabilizing tube V2, a voltage stabilizing tube V3, a resistor RT1 and a resistor RT2, the RS485 chip U10 being connected with the single-chip microcomputer chip U15, the resistor R37, the resistor R44, the voltage stabilizing tube V1, the voltage stabilizing tube V2, the voltage stabilizing tube V3, the resistor RT1 and the resistor RT2 respectively.

[0012] Preferably, the DCDC power conversion circuit comprises a diode D7, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a diode D3, an inductor L2, a power conversion chip U2 and a power conversion chip U4, the power conversion chip U4 being connected with the power conversion chip U2, a fuse F1, the diode D7, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the capacitor C15, the diode D3 and the inductor L2 respectively, and the power conversion chip U2 being connected with the single-chip microcomputer chip U15.

[0013] Preferably, the zero-crossing detection circuit comprises an optocoupler U13, a resistor R10, a resistor R11, a resistor R4, a diode D2, a triode Q1, a resistor R8 and a capacitor C45, the optocoupler U13 being connected with the resistor R13, the diode D2, the resistor R4 and the triode Q1 respectively, and the triode being connected with the resistor R8, the capacitor C45 and the single-chip microcomputer chip U15 respectively.

[0014] Preferably, the RJ45 Ethernet circuit comprises an Ethernet communication chip U9, a network port J2, a crystal oscillator X1 and a resistor R33, the single-chip microcomputer chip U15, the network port J2, the crystal oscillator X1 and the resistor R33 being connected with the Ethernet communication chip U9.

[0015] Preferably, the temperature and humidity sensor interface circuit comprises a temperature and humidity sensor interface P5, a temperature and humidity sensor and a resistor R2, the temperature and humidity sensor interface P5 being connected with the single-chip microcomputer chip U15 and the resistor R2 respectively; the on-off quantity detection circuit comprises a dry contact switch, a smoke sensor interface P2, an optocoupler U3, an optocoupler U5 and an optocoupler U11, the optocoupler U3 and the optocoupler U4 being connected with the dry contact switch and the single-chip microcomputer chip U15 respectively, and the optocoupler U11 being connected with the single-chip microcomputer chip U15 and the smoke sensor interface P2 respectively.

[0016] Preferably, the relay output control circuit comprises a relay K1, a relay K2, a relay K3, a relay K4, a relay K5, a relay K6, a relay K7, a relay K8, a relay drive chip U6 and a plurality of output interfaces, the relay drive chip U6 is connected with the single-chip microcomputer chip U15, the relay K1, the relay K2, the relay K3, the relay K4, the relay K5, the relay K6, the relay K7, the relay K8 respectively; the buzzer circuit comprises a buzzer B1, a triode Q2, a resistor R58 and a resistor R64, the buzzer B1 is connected with the resistor R58, the triode Q2 and the resistor R64 respectively, and the resistor R64 is connected with the single-chip microcomputer chip U15; the wireless remote control circuit comprises a radio frequency interface PF1, a remote controller chip U8, a crystal oscillator X3 and an inductor L5, and the remote controller chip U8 is connected with the radio frequency interface PF1, the crystal oscillator X3 and the inductor L5 respectively.

[0017] Preferably, the indicator lamp circuit comprises a plurality of indicator lamp resistors and a plurality of light emitting diodes, and the indicator lamp resistors are connected with the single-chip microcomputer chip U15 and the light emitting diodes.

[0018] With the above technical scheme, the novel distribution box controller has the following beneficial effects: the controller body in the distribution box controller is provided with a circuit board and a display screen electrically connected with the circuit board, the ACDC power conversion circuit, the zero-crossing detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching value detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit in the circuit board are electrically connected with an MCU circuit, the working states of various functional circuits are controlled by the MCU circuit, the integration degree is high, a distribution box controller integrates network communication, RS485 communication, wireless remote control and other functions, a PLC controller is not needed, the cost is reduced, programming is not needed, the usability is high, the maintainability is good, and the ACDC power conversion circuit can be prevented from electromagnetic interference, the power circuit can be protected from being damaged when the voltage is too high. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a perspective view of the utility model;

[0020] Figure 2 It is another perspective view of the utility model from another angle;

[0021] Figure 3 It is a circuit principle diagram of the ACDC power conversion circuit, the zero-crossing detection circuit and the DCDC power conversion circuit in the utility model;

[0022] Figure 4The circuit principle diagram of the RJ45 Ethernet circuit in the utility model;

[0023] Figure 5 The circuit principle diagram of the temperature and humidity sensor interface circuit, the on-off quantity detection circuit and the RS485 circuit in the utility model;

[0024] Figure 6 The circuit principle diagram of the relay output control circuit, the buzzer circuit and the wireless remote control circuit in the utility model;

[0025] Figure 7 The circuit principle diagram of the indicating lamp circuit in the utility model;

[0026] Figure 8 The circuit principle diagram of the MCU circuit in the utility model;

[0027] In the figure, 1 is a controller body, and 2 is a display screen. DETAILED DESCRIPTION

[0028] The specific embodiments of the utility model will be further described in combination with the accompanying drawings. It should be noted that the description of these embodiments is used to help understand the utility model, but does not constitute a limitation on the utility model. In addition, the technical features involved in each embodiment of the utility model described below can be combined with each other as long as they do not conflict with each other.

[0029] In the description of the utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0030] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the utility model, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0031] As Figures 1-3As shown, the novel distribution box controller includes a controller body 1, which is provided with a circuit board and a display screen 2 electrically connected with the circuit board. The circuit board includes an ACDC power conversion circuit, a zero-crossing detection circuit, a DCDC power conversion circuit, an RJ45 Ethernet circuit, a temperature and humidity sensor interface circuit, a switching value detection circuit, a relay output control circuit, a buzzer circuit, a wireless remote control circuit, an indicator lamp circuit and an MCU circuit. The ACDC power conversion circuit, the zero-crossing detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching value detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit are electrically connected with the MCU circuit. It can be understood that the controller body 1 includes a controller shell and the like, and the display screen can be a general LED display screen and the like.

[0032] Specifically, the ACDC power conversion circuit includes a power interface J1, a thermistor R19, a common-mode choke coil L6, a capacitor CX1, a power conversion chip U1, a diode D4 and a fuse F1. The thermistor R19 is connected with the power interface J1, the capacitor CX1 and the common-mode choke coil L6 respectively. The common-mode choke coil L6 is connected with the power interface J1, the capacitor CX1 and the power conversion chip U1 respectively. The diode D4 is connected with the power conversion chip U1 and the fuse F1 respectively. The power interface J1 is connected with an external input power supply. The power conversion chip U1 adopts an HLK-10M12 chip. It can be understood that the ACDC power conversion circuit converts alternating current 220V strong current into direct current 12V to supply power to the equipment. The front end of the ACDC power conversion circuit adopts an EMC protection circuit and an overvoltage protection circuit composed of a composite PTC thermistor (R19), a safety capacitor (CX1) and a common-mode choke coil (L6) to avoid the strong current pulse interference on the equipment power supply and ensure that the equipment will not be damaged when the voltage of 380V is mistakenly connected.

[0033] Specifically, the MCU circuit includes a single-chip microcomputer chip U15, an interface P9, a crystal oscillator X2 and a battery BT1. The interface P9, the crystal oscillator X2 and the battery BT1 are connected with the single-chip microcomputer chip U15. It can be understood that the single-chip microcomputer chip U15 adopts an AT32f415CBT7 chip as a logic processor of the entire distribution box controller to realize the logic functions of network communication control, data storage, switching value detection, relay control, timing control, wireless remote control and the like.

[0034] Specifically, the circuit board further comprises an RS485 communication circuit, which comprises an RS485 chip U10, a resistor R37, a resistor R44, a voltage stabilizing tube V1, a voltage stabilizing tube V2, a voltage stabilizing tube V3, a resistor RT1 and a resistor RT2. The RS485 chip U10 is connected with the single-chip microcomputer chip U15, the resistor R37, the resistor R44, the voltage stabilizing tube V1, the voltage stabilizing tube V2, the voltage stabilizing tube V3, the resistor RT1 and the resistor RT2 respectively. The RS485 chip U10 adopts a BL3085 chip. It can be understood that the RS485 bus interface is widely used in industrial fields. Through the RS485 circuit, the UART serial port of the MCU (i.e. the single-chip microcomputer chip U15) is converted into an RS485 signal to realize communication with a central control host or a central control screen. The TVS anti-static surge and overcurrent protection circuit composed of RT1, RT2, V1, V2 and V3 avoids damage to the circuit caused by external interference signals. The UART serial port is connected with the MCU (U15).

[0035] Specifically, the DCDC power conversion circuit comprises a diode D7, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a diode D3, an inductor L2, a power conversion chip U2 and a power conversion chip U4. The power conversion chip U4 is connected with the power conversion chip U2, a fuse F1, the diode D7, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the capacitor C15, the diode D3 and the inductor L2 respectively. The power conversion chip U2 is connected with the single-chip microcomputer chip U15. It can be understood that the power conversion chip U2 adopts a BL1117-33CX chip, and the power conversion chip U4 adopts an XL1509-5.0E1 chip. The DCDC power conversion circuit supports dual power supply. One of the dual power supply is converted from 220V to 12V, and the other is 12V supplied by external access. The DCDC power circuit is composed of the power chip conversion U4 and the resistance and capacitance elements C11, C12, D3, L2, C13, etc. to convert 12V power supply into 5V. The 5V power supply is converted into 3.3V power supply by U2 to provide for internal circuit.

[0036] Specifically, the zero-crossing detection circuit includes optocoupler U13, resistor R10, resistor R11, resistor R4, diode D2, transistor Q1, resistor R8, and capacitor C45, the optocoupler U13 is connected with the resistor R13, diode D2, resistor R4 and transistor Q1 respectively, the transistor is connected with the resistor R8, capacitor C45 and single-chip microcomputer chip U15 respectively, the optocoupler U13 adopts EL817 optocoupler. It can be understood that the 220V front-end acquisition circuit composed of resistors R10, R11, R13, optocoupler U13 and diode D2 converts the 220V alternating signal into a direct current pulse signal. Then pass through the shaping filter circuit composed of transistor Q1, resistors R4, R8 and capacitor C45. Finally, the shaped waveform is output to MCU (U15) for detecting the zero point of the external 220V alternating current, realizing the control of the on-off of the relay at the zero point, and achieving the protection of the relay contact. At the same time, the zero-point on-off can reduce electromagnetic interference and improve the stability of the equipment operation. Through the connection of ordinary IO and MCU, the 220V alternating waveform is detected.

[0037] Specifically, the RJ45 Ethernet circuit includes Ethernet communication chip U9, network port J2, crystal oscillator X1 and resistor R33, the single-chip microcomputer chip U15, network port J2, crystal oscillator X1 and resistor R33 are connected with the Ethernet communication chip U9, and the Ethernet communication chip U9 adopts W5500 chip. It can be understood that W5500 is an embedded Ethernet controller chip integrating a complete hardware TCP / IP protocol stack, integrating 10 / 100M Ethernet PHY supporting automatic negotiation. Communicate with the host MCU (U15) through the high-speed SPI interface, which is used to realize the wired Ethernet communication capability of the device, so as to have the ability to access local area network or wide area network, realize remote control and management.

[0038] Specifically, the temperature and humidity sensor interface circuit includes temperature and humidity sensor interface P5, temperature and humidity sensor and resistor R2, the temperature and humidity sensor interface P5 is connected with the single-chip microcomputer chip U15 and resistor R2 respectively, and the model of the temperature and humidity sensor adopts AHT20. It can be understood that AHT20 is a digital temperature and humidity sensor, which communicates with the host MUC (U15) through I2C interface (i.e. temperature and humidity sensor interface P5). Realize the real-time collection and monitoring of the environment temperature and humidity.

[0039] Specifically, the switch quantity detection circuit includes a dry contact switch, a smoke sensor interface P2, optocouplers U3 and U5, and an optocoupler U11, the optocouplers U3 and U4 are connected with the dry contact switch and the single-chip microcomputer chip U15 respectively, and the optocoupler U11 is connected with the single-chip microcomputer chip U15 and the smoke sensor interface P2 respectively. It can be understood that the switch quantity detection circuit is used for detecting external switch quantity signals, supports switch quantity signal detection within a voltage of 36V, supports dry node and PNP wet node signal detection, and isolates external switch signals and internal circuits through optocouplers EL817 (U6, etc.) to avoid external interference signals from being conducted to internal control circuits. It is used for detecting external switches and smoke sensor states and is connected with common IO and the MCU (U15).

[0040] Specifically, the relay output control circuit includes relays K1, K2, K3, K4, K5, K6, K7, K8, a relay driving chip U6, and a plurality of output interfaces, the relay driving chip U6 is connected with the single-chip microcomputer chip U15, the relays K1, K2, K3, K4, K5, K6, K7, and K8 respectively. It can be understood that the relay driving chip U6 adopts a ULN2003A chip, the MCU (U15) drives the relays K1-K8 through the U6 driving chip to realize on-off control of 8 relays. Since the controller needs to adapt to power supply control of different powers, from several tens to several hundred KW power distribution boxes, the specifications and quantities of the matched AC contactors are different. The controller controls external AC contactors through internal relays K1-K8, so the relays K1-K8 select high-performance relays HF32FV-16 that support high inrush current. The relays support a TV-10 inrush level, and have better performance than general TV-5 relays.

[0041] Specifically, the buzzer circuit includes a buzzer B1, a transistor Q2, a resistor R58, and a resistor R64, the buzzer B1 is connected with the resistor R58, the transistor Q2, and the resistor R64 respectively, and the resistor R64 is connected with the single-chip microcomputer chip U15; the wireless remote control circuit includes a radio frequency interface PF1, a remote controller chip U8, a crystal oscillator X3, and an inductor L5, the remote controller chip U8 is connected with the radio frequency interface PF1, the crystal oscillator X3, and the inductor L5 respectively. It can be understood that the buzzer control realizes on-off control of the buzzer B1 and is used for voice prompt during abnormal alarm. It is connected with common IO and the MCU; the remote controller chip U8 adopts an LR670 chip, and the wireless remote control receiving circuit is a 315Mhz wireless remote control receiving circuit composed of elements such as the chip U8 (LR670), X3, C41, L4, C40, and L5. It is used for receiving control signals of a wireless remote controller and realizes wireless remote control. It is connected with common IO and the MCU.

[0042] Specifically, the indicator lamp circuit comprises a plurality of indicator lamp resistors and a plurality of light emitting diodes, the indicator lamp resistors are connected with the single-chip microcomputer chip U15 and the light emitting diodes respectively, and the light emitting diodes comprise light emitting diodes D5, D9, D10, D11, D13, D15-D25.

[0043] It can be understood that the power distribution box controller has the following advantages due to the reasonable design and unique structure.

[0044] 1. High ease of use: no programming is required, and the factory program can meet the functional requirements of most power distribution boxes. Only simple settings are required to achieve remote control, timing control and environmental monitoring functions.

[0045] 2. High integration: a power distribution box controller integrates network communication, RS485 communication, wireless remote control, manual control, timing control, remote control, environmental temperature and humidity, and smoke fire monitoring functions.

[0046] 3. Good maintainability: according to the assembly production process of the power distribution box, the interfaces of the controller are mostly plug-in type, which speeds up the assembly of the power distribution box and also facilitates subsequent replacement of accessories, such as AC contactors, which are used frequently and cannot be used for a long time.

[0047] 4. Higher reliability: the power distribution box controller is mainly used to control the LED display screen power switch, the display screen power has large harmonic components and voltage fluctuations, and the power supply of the power distribution box controller is generally connected to the household line of three-phase power, which is easily affected by electromagnetic interference of various electrical equipment. The power distribution box controller adds a filter circuit and a common mode suppression circuit to the input power supply circuit. At the same time, in order to avoid high voltage or incorrect 330V voltage during installation, a composite PTC thermistor is added to the circuit, which can protect the power supply circuit from being damaged when the voltage is too high. Dual power supply design, after the AC 220V power supply is damaged due to other reasons, the equipment can still be powered by a DC 12V power adapter. It ensures that the main power supply can be quickly switched to the standby power supply in case of abnormality

[0048] The embodiments of the utility model are described in detail in combination with the drawings, but the utility model is not limited to the described embodiments. For those skilled in the art, various changes, modifications, replacements and modifications can be made to these embodiments without departing from the principles and spirits of the utility model, and still fall within the protection scope of the utility model.

Claims

1. A novel distribution box controller, comprising a controller body, wherein a circuit board and a display screen electrically connected with the circuit board are arranged on the controller body, characterized in that: The circuit board comprises an ACDC power conversion circuit, a zero-crossing detection circuit, a DCDC power conversion circuit, an RJ45 Ethernet circuit, a temperature and humidity sensor interface circuit, a switching quantity detection circuit, a relay output control circuit, a buzzer circuit, a wireless remote control circuit, an indicator lamp circuit and an MCU circuit, and the ACDC power conversion circuit, the zero-crossing detection circuit, the DCDC power conversion circuit, the RJ45 Ethernet circuit, the temperature and humidity sensor interface circuit, the switching quantity detection circuit, the relay output control circuit, the buzzer circuit, the wireless remote control circuit and the indicator lamp circuit are electrically connected with the MCU circuit.

2. The new type of electrical distribution box controller according to claim 1, characterized in that: The ACDC power conversion circuit comprises a power interface J1, a thermistor R19, a common-mode suppression coil L6, a capacitor CX1, a power conversion chip U1, a diode D4 and a fuse F1, the thermistor R19 is connected with the power interface J1, the capacitor CX1 and the common-mode suppression coil L6 respectively, the common-mode suppression coil L6 is connected with the power interface J1, the capacitor CX1 and the power conversion chip U1 respectively, and the diode D4 is connected with the power conversion chip U1 and the fuse F1 respectively.

3. The new type of electrical box controller of claim 1, wherein: The MCU circuit comprises a single-chip microcomputer chip U15, an interface P9, a crystal oscillator X2 and a battery BT1, and the interface P9, the crystal oscillator X2 and the battery BT1 are connected with the single-chip microcomputer chip U15.

4. The new type of electrical distribution box controller according to claim 3, characterized in that: The circuit board further comprises an RS485 communication circuit, and the RS485 communication circuit comprises an RS485 chip U10, a resistor R37, a resistor R44, a voltage stabilizing tube V1, a voltage stabilizing tube V2, a voltage stabilizing tube V3, a resistor RT1 and a resistor RT2, and the RS485 chip U10 is connected with the single-chip microcomputer chip U15, the resistor R37, the resistor R44, the voltage stabilizing tube V1, the voltage stabilizing tube V2, the voltage stabilizing tube V3, the resistor RT1 and the resistor RT2 respectively.

5. The new type of electrical distribution box controller according to claim 3, characterized in that: The DCDC power conversion circuit comprises a diode D7, a capacitor C11, a capacitor C12, a capacitor C13, a capacitor C14, a capacitor C15, a diode D3, an inductor L2, a power conversion chip U2 and a power conversion chip U4, the power conversion chip U4 is connected with the power conversion chip U2, the fuse F1, the diode D7, the capacitor C11, the capacitor C12, the capacitor C13, the capacitor C14, the capacitor C15, the diode D3 and the inductor L2 respectively, and the power conversion chip U2 is connected with the single-chip microcomputer chip U15.

6. The new type of electrical distribution box controller of claim 3, wherein: The zero-crossing detection circuit comprises an optocoupler U13, a resistor R10, a resistor R11, a resistor R4, a diode D2, a triode Q1, a resistor R8 and a capacitor C45, the optocoupler U13 is connected with the resistor R13, the diode D2, the resistor R4 and the triode Q1 respectively, and the triode is connected with the resistor R8, the capacitor C45 and the single-chip microcomputer chip U15 respectively.

7. The new type of electrical distribution box controller of claim 3, wherein: The RJ45 Ethernet circuit comprises an Ethernet communication chip U9, a network port J2, a crystal oscillator X1 and a resistor R33, and the single-chip microcomputer chip U15, the network port J2, the crystal oscillator X1 and the resistor R33 are connected with the Ethernet communication chip U9.

8. The new type of electrical distribution box controller of claim 3, wherein: The temperature and humidity sensor interface circuit includes a temperature and humidity sensor interface P5, a temperature and humidity sensor and a resistor R2, the temperature and humidity sensor interface P5 is connected with the single-chip microcomputer chip U15 and the resistor R2 respectively; the on-off quantity detection circuit includes a dry contact switch, a smoke sensor interface P2, a photo-coupler U3, a photo-coupler U5 and a photo-coupler U11, the photo-coupler U3 and the photo-coupler U4 are connected with the dry contact switch and the single-chip microcomputer chip U15 respectively, the photo-coupler U11 is connected with the single-chip microcomputer chip U15 and the smoke sensor interface P2 respectively.

9. The new type of electrical distribution box controller of claim 3, wherein: The relay output control circuit includes a relay K1, a relay K2, a relay K3, a relay K4, a relay K5, a relay K6, a relay K7, a relay K8, a relay drive chip U6 and a plurality of output interfaces, the relay drive chip U6 is connected with the single-chip microcomputer chip U15, the relay K1, the relay K2, the relay K3, the relay K4, the relay K5, the relay K6, the relay K7 and the relay K8 respectively; the buzzer circuit includes a buzzer B1, a triode Q2, a resistor R58 and a resistor R64, the buzzer B1 is connected with the resistor R58, the triode Q2 and the resistor R64 respectively, the resistor R64 is connected with the single-chip microcomputer chip U15; the wireless remote control circuit includes a radio frequency interface PF1, a remote controller chip U8, a crystal oscillator X3 and an inductor L5, the remote controller chip U8 is connected with the radio frequency interface PF1, the crystal oscillator X3 and the inductor L5 respectively.

10. The new type of electrical distribution box controller of claim 3, wherein: The indicating lamp circuit includes a plurality of indicating lamp resistors and a plurality of light emitting diodes, the indicating lamp resistors are connected with the single-chip microcomputer chip U15 and the light emitting diodes respectively.

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