Intelligent lamp post power supply device

Abstract

The utility model aims to provide the intelligent lamp post power supply device which is simple in structure and can provide various voltages for equipment to use. The intelligent lamp post power supply device comprises a circuit breaker (1) connected to a mains supply, a three-phase intelligent electric meter (2) for metering electricity, measuring electric energy parameters and remotely controlling, an MCU (3) for setting the intelligent lamp post power supply device, a communication interface (4) connected with the MCU (3) and a power supply interface (5) connected with the communication interface (4), wherein the three-phase intelligent electric meter (2) is provided with at least one user interface (21) which is in communication connection with a background power grid system; the MCU (3) is connected with a plurality of BUCK circuits (31), the plurality of BUCK circuits (31) respectively output at least one 12V direct-current power supply, at least one 24V direct-current power supply, at least one 48V direct-current power supply and at least one adjustable direct-current power supply with the voltage range of 5-12V, and the MCU (3) is provided with a peripheral circuit. The utility model relates to the technical field of power supplies.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply, in particular to an intelligent lamp pole power supply device. Background Art

[0002] With the development of IoT technology, smart streetlights are becoming increasingly common. Smart streetlights require smart light boxes installed on light poles. These smart light boxes require multiple devices to monitor various parameters for intelligent and, ultimately, remote control of the streetlights. To achieve this, a power supply is required to power each device and monitor its power consumption. In existing technology, this typically involves a smart meter. However, with increasing demands for intelligent control, refined management of individual electrical devices is required to manage power consumption and, in turn, implement intelligent control to achieve low power consumption and high-precision control. Utility Model Content

[0003] In view of the deficiencies in the prior art, the present invention proposes an intelligent lamp pole power supply device with a simple structure and capable of providing multiple voltages for use by equipment.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: an intelligent light pole power supply device, comprising

[0005] The circuit breaker connected to the mains power supply,

[0006] A three-phase smart meter that measures electricity consumption, energy parameters, and is remotely controlled. The three-phase smart meter is provided with at least one user interface that communicates with the backend power grid system.

[0007] MCU for setting up the smart light pole power supply unit,

[0008] a communication interface connected to the MCU,

[0009] The MCU is connected to a plurality of BUCK circuits, which respectively output at least one 12V DC power supply, at least one 24V DC power supply, at least one 48V DC power supply, and at least one adjustable DC power supply with a voltage range of 5 to 12V.

[0010] The MCU is provided with peripheral circuits.

[0011] The MCU is connected to seven BUCK circuits, three of which output 12V DC power, two output 24V DC power, one output 48V DC power, and one output adjustable DC power with a voltage range of 5 to 12V.

[0012] The circuit breaker is connected to an overcurrent and overtemperature protection circuit and a leakage protection circuit, and is also connected to a lightning protection device.

[0013] The communication interface is an Ethernet interface and / or an RS485 interface.

[0014] The peripheral circuits provided by the MCU include an MCU power supply circuit, a BUCK output status monitoring and control circuit, a temperature and humidity monitoring circuit, a data storage circuit, and a 485 communication circuit.

[0015] After the AC power is input, it is filtered and rectified by the EMI circuit, then rectified into DC by the rectifier bridge, and then input into the PFC circuit for power factor correction. The PFC circuit is connected to the LLC conversion circuit to achieve 48V output. At the same time, the PFC circuit is connected to the flyback conversion circuit to achieve 12V output. The 48V output supplies power to all the BUCK circuits, and the 12V output supplies power to the MCU through the MCU power supply circuit.

[0016] The BUCK circuit consists of a power management chip, two MOS tubes and their peripheral circuits.

[0017] The MCU is selected from a single chip microcomputer with a model of LQFP48.

[0018] The three-phase smart meter adopts an LQFP44 model. The three-phase smart meter is provided with two user interfaces, which are composed of a signal isolation circuit and a MOS rectifier circuit. The three-phase smart meter is connected to a three-way electric energy metering circuit.

[0019] The beneficial effects of the present invention are as follows: in the present invention, by accessing the mains, the input electrical energy is processed and converted into direct current, and then a plurality of BUCK circuits are set to realize multiple voltage power outputs, thereby meeting the power needs of various devices in the smart lamp pole box, and the multi-channel user interface set by the three-phase smart meter can meet the power consumption detection and equipment operation control of the smart lamp pole box, and the remote meter reading function is used to realize automatic meter reading operations, which greatly reduces the labor intensity of the staff. The present invention has a simple structure and a reasonable layout, and integrates multiple devices in one smart lamp pole box, which also relatively reduces the cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a principle block diagram of the utility model;

[0021] Figure 2 is a circuit schematic diagram of the EMI circuit;

[0022] Figure 3 is a circuit schematic diagram of the PFC circuit;

[0023] Figure 4 is a circuit schematic diagram of the flyback conversion circuit;

[0024] Figure 5 is a circuit schematic diagram of the first part of the main circuit of the LLC conversion circuit;

[0025] Figure 6 is a circuit schematic diagram of the second part of the main circuit of the LLC conversion circuit;

[0026] Figure 7 This is the schematic diagram of the self-powered circuit of the power chip in the MCU peripheral circuit;

[0027] Figure 8 is a circuit schematic diagram of the first part of the BUCK circuit;

[0028] Figure 9 is a circuit schematic diagram of the second part of the BUCK circuit;

[0029] Figure 10 is a circuit schematic diagram of the third part of the BUCK circuit;

[0030] Figure 11 is a circuit schematic diagram of the fourth part of the BUCK circuit;

[0031] Figure 12 is a circuit schematic diagram of the fifth part of the BUCK circuit;

[0032] Figure 13 is a circuit schematic diagram of the sixth part of the BUCK circuit;

[0033] Figure 14 is a circuit schematic diagram of the seventh part of the BUCK circuit;

[0034] Figure 15 It is a circuit schematic diagram of the controller part of the MCU;

[0035] Figure 16 This is the circuit schematic diagram of the MCU power supply circuit;

[0036] Figure 17 1 is a circuit schematic diagram of the temperature and humidity detection circuit;

[0037] Figure 18 is a circuit schematic diagram of the data storage circuit;

[0038] Figure 19 It is the circuit schematic diagram of the 485 communication circuit;

[0039] Figure 20 is a circuit schematic diagram of the output state detection and control circuit;

[0040] Figure 21 is a circuit schematic diagram of the first part of the three-phase smart meter;

[0041] Figure 22 is a circuit schematic diagram of the second part of the three-phase smart meter;

[0042] Figure 23 is a circuit schematic diagram of the third part of the three-phase smart meter;

[0043] Figure 24 It is a circuit schematic diagram of the fourth part of the three-phase smart meter. DETAILED DESCRIPTION

[0044] like Figures 1 to 24 As shown, the intelligent lamp pole power supply device 10 of the present invention includes

[0045] Circuit breaker 1 connected to the mains power supply,

[0046] A three-phase smart meter 2 for electricity metering, electric energy parameter measurement and remote control is provided. The three-phase smart meter 2 is provided with at least one user interface 21, which is connected to the backend power grid system for communication.

[0047] MCU3 for setting the intelligent light pole power supply unit,

[0048] The communication interface 4 connected to the MCU 3,

[0049] The MCU 3 is connected to a plurality of BUCK circuits 31, which respectively output at least one 12V DC power supply, at least one 24V DC power supply, at least one 48V DC power supply, and at least one adjustable DC power supply with a voltage range of 5 to 12V.

[0050] The MCU3 is provided with peripheral circuits, specifically, the peripheral circuits include a temperature and humidity detection circuit, an MCU power supply circuit, a data storage circuit, a 485 communication circuit, and an output state detection and control circuit.

[0051] Specifically, the MCU3 is connected to seven BUCK circuits 31, of which three output 12V DC power, two output 24V DC power, one output 48V DC power, and one outputs an adjustable DC power with a voltage range of 5 to 12V. The circuit breaker 1 is connected to an overcurrent and overtemperature protection circuit 11 and a leakage protection circuit 12, and the circuit breaker 1 is also connected to a lightning protection device 13. The communication interface 4 is an Ethernet interface 41 and / or an RS485 interface 42. The peripheral circuits set up in the MCU3 include an MCU power supply circuit 32, a BUCK output status monitoring and control circuit 33, a temperature and humidity monitoring circuit 34, a data storage circuit 35 and a 485 communication circuit, and the 485 communication circuit is connected to the Ethernet interface 41 and / or the RS485 interface 42.

[0052] After the mains power is input, it is filtered and rectified by the EMI circuit, then rectified into DC by the rectifier bridge BD1. This is then input into the PFC circuit for power factor correction. The PFC circuit is connected to the LLC conversion circuit to achieve a 48V output. Simultaneously, the PFC circuit is connected to the flyback conversion circuit to achieve a 12V output. The 48V output powers all the buck circuits 31, and the 12V output powers the MCU 3 through the MCU power supply circuit. The buck circuit consists of a power management chip, two MOS transistors, and their peripheral circuits. The MCU 3 is selected from a single-chip microcomputer model LQFP48. The three-phase smart meter 2 uses an LQFP44 meter model and is equipped with two user interfaces 21, each consisting of a signal isolation circuit and a MOS rectifier circuit. The three-phase smart meter 2 is connected to three energy metering circuits.

[0053] This intelligent light pole power supply box features lightning protection, leakage protection, AC metering, DC output overcurrent protection, high DC output overvoltage protection, DC output short-circuit protection, RS485 communication, Ethernet communication, temperature and humidity monitoring, remote on / off control, and data and exception reporting. It provides independent metering for two AC channels, with Ethernet and RS485 access to parameters such as voltage, current, and active power. The MCU reads the voltage of each of the seven DC output channels in real time. When the voltage exceeds or falls below 10% of the set rated value, the MCU reports and shuts down the output of the relevant channel (controlling the EN function terminal of the DC power supply).

[0054] The above description is only the optimal solution embodiment of the present invention and is not intended to limit the present invention. Various modifications or replacements of the present invention made by those skilled in the art without departing from the essence and protection scope of the present invention should also be within the scope of protection of the present invention.

Claims

1. An intelligent lamp pole power supply device, characterized by: The intelligent lamp pole power supply device includes Circuit breaker (1) connected to the mains power supply, A three-phase smart meter (2) for performing electricity metering, electric energy parameter measurement, and remote control, wherein the three-phase smart meter (2) is provided with at least one user interface (21), and the user interface (21) is communicatively connected to a backend power grid system. MCU (3) for setting the intelligent light pole power supply unit, a communication interface (4) connected to the MCU (3), The MCU (3) is connected to a plurality of BUCK circuits (31), and the plurality of BUCK circuits (31) respectively output at least one 12V DC power supply, at least one 24V DC power supply, at least one 48V DC power supply, and at least one adjustable DC power supply with a voltage range of 5 to 12V. The MCU (3) is provided with peripheral circuits.

2. The intelligent lamp pole power supply device according to claim 1, characterized in that: The MCU (3) is connected to seven BUCK circuits (31), three of which output 12V DC power, two output 24V DC power, one output 48V DC power, and one output adjustable DC power with a voltage range of 5 to 12V.

3. The intelligent lamp pole power supply device according to claim 1, characterized in that: The circuit breaker (1) is connected to an overcurrent and overtemperature protection circuit (11) and a leakage protection circuit (12), and the circuit breaker (1) is also connected to a lightning protection device (13).

4. The intelligent lamp pole power supply device according to claim 1, characterized in that: The communication interface (4) is an Ethernet interface (41) and / or an RS485 interface (42).

5. The intelligent lamp pole power supply device according to claim 1, characterized in that: The peripheral circuits provided in the MCU (3) include an MCU power supply circuit (32), a BUCK output state monitoring and control circuit (33), a temperature and humidity monitoring circuit (34), a data storage circuit (35), and a 485 communication circuit.

6. The intelligent lamp pole power supply device according to claim 1, characterized in that: After the mains power is input, the input is filtered and rectified by the EMI circuit, and then rectified into direct current by the rectifier bridge (BD1), and then input into the PFC circuit for power factor correction. The PFC circuit is connected to the LLC conversion circuit to achieve a 48V output. At the same time, the PFC circuit is connected to the flyback conversion circuit to achieve a 12V output. The 48V output supplies power to all the BUCK circuits (31), and the 12V output supplies power to the MCU (3) through the MCU power supply circuit.

7. The intelligent lamp pole power supply device according to claim 1, characterized in that: The BUCK circuit consists of a power management chip, two MOS tubes and their peripheral circuits.

8. The intelligent lamp pole power supply device according to claim 1, characterized in that: The MCU (3) is selected from a single chip microcomputer of the LQFP48 model.

9. The intelligent lamp pole power supply device according to claim 1, characterized in that: The three-phase smart meter (2) adopts a meter of model LQFP44. The three-phase smart meter (2) is provided with two user interfaces (21). The user interfaces (21) are composed of a signal isolation circuit and a MOS rectifier circuit. The three-phase smart meter (2) is connected to three electric energy metering circuits.

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