A multifunctional equipment cabin of a comprehensive pole

Abstract

The application discloses a multifunctional equipment cabin of a comprehensive pole, and belongs to the field of comprehensive poles of street lamps, comprising AC electronic distribution sub-warehouses, edge computing gateway and network distribution sub-warehouses and DC electronic distribution sub-warehouses, sensing sub-warehouses and wiring sub-warehouses which are sequentially arranged from top to bottom, wherein the edge computing gateway and the network distribution sub-warehouses and the DC electronic distribution sub-warehouses are horizontally arranged side by side; the AC electronic distribution sub-warehouses are connected with an external 220V AC power grid as an AC source, and a plurality of rectifier filter circuits are arranged between the AC electronic distribution sub-warehouses and the DC electronic distribution sub-warehouses; a DC-DC converter and a bridgeless PFC power supply circuit are arranged between the AC source and each rectifier filter circuit; and the bridgeless PFC power supply circuit specifically comprises a rectifier module, an SMPS switching power supply module, a bridgeless PFC power module, a synchronous rectification control circuit, a soft start circuit, a low-voltage protection circuit and a PFC control module. According to the application, the functions of the comprehensive pole can be separated, improved and perfected, the utilization rate of the power grid can be improved, and the possibility of interfering with other electrical appliances can be reduced.

Claims

1. A multi-functional equipment compartment for an integrated pole, comprising, from top to bottom, an AC power distribution compartment, an edge computing gateway and network distribution sub-compartment, a DC power distribution compartment, a sensing sub-compartment, and a wiring sub-compartment, wherein, The edge computing gateway is arranged horizontally alongside the network distribution sub-warehouse and the DC power distribution sub-warehouse. The AC power distribution compartment, edge computing gateway, network distribution sub-compartment, DC power distribution compartment, sensor sub-compartment, and wiring sub-compartment are physically isolated from each other; The AC power distribution compartment is connected to an external 220V AC power grid as an AC source, and multiple rectifier and filter circuits are provided between the AC power distribution compartment and the DC power distribution compartment. A DC-DC converter and a bridgeless PFC power supply circuit are provided between the AC source and each rectifier and filter circuit. The bridgeless PFC power supply circuit specifically includes: a rectifier module, an SMPS switching power supply module, a bridgeless PFC power module, a synchronous rectification control circuit, a soft start circuit, a low-voltage protection circuit, and a PFC control module. The rectifier module's input terminal is connected to an AC source, and its output terminal is connected to the SMPS switching power supply module's output terminal. The SMPS switching power supply module's output terminal is connected to the bridgeless PFC power module's input terminal, and the bridgeless PFC power module's output terminal is connected to a DC load. The output terminals of the synchronous rectification control circuit, the soft start circuit, and the low-voltage protection circuit are connected to the SMPS switching power supply module's input terminal, and the bridgeless PFC power module is connected to the PFC control module. Its features are: The low-voltage protection circuit utilizes the latching and comparison functions of the NE555 chip. The input AC source is rectified and filtered before detection. When the voltage at pin 6 of the NE555 chip is greater than the voltage at pin 5, the output becomes low, the optocoupler is powered on, and a signal is sent to the PFC control module to start working. When the voltage at pin 5 is less than 5.2V, the voltage at pin 2 becomes low, and pin 3 outputs a high level to shut down the optocoupler. At this time, the PFC control module is disabled to achieve the purpose of low-voltage protection. The multi-functional equipment compartment also includes a PNN neural network electrical module, which is used to perform fault analysis and prediction based on the current and voltage feedback data of the bridgeless PFC power supply circuit. The PNN neural network electrical module includes an input layer, a pattern layer, a summation layer, and an output layer connected in sequence. The input layer receives values ​​from training samples, which are fault feature data obtained through the PFC control module. The input sample data is converted into feature vectors and then passed to the network. The pattern layer calculates the matching relationship between the input feature vectors and various fault patterns in the training set. The output of each pattern unit in the pattern layer is: ； Among them W i The weights connecting the input layer to the pattern layer are δ, where δ is a smoothing factor and δ=0.

28. The summing layer accumulates the probabilities belonging to a certain class to calculate the estimated probability density function of the fault mode. The output layer receives the probability density functions of each class output from the summing layer, and the class corresponding to the neuron with the largest output probability density function is the fault mode class to be identified.

2. The multifunctional equipment compartment of the integrated pole according to claim 1, characterized in that, The PFC control module includes a PFC controller, and the PFC controller uses the UCC28019 chip.

3. The multifunctional equipment compartment of the integrated pole according to claim 1, characterized in that, The AC power distribution compartment includes a main circuit and three sub-circuits. The main circuit's input terminal is connected to an external 220V AC power grid, and the main circuit's output terminal is connected to the sub-circuit's input terminal. Both the main circuit and the three sub-circuits are equipped with circuit breakers. The AC power on the three sub-circuits can be converted into DC power of different specifications after passing through a DC-DC converter, a bridgeless PFC power supply circuit, and a rectifier and filter circuit, and then supplied to the DC power distribution compartment. The DC power distribution compartment provides DC power of different specifications to the outside world.

4. The multifunctional equipment compartment of the integrated pole according to claim 3, characterized in that, The AC power distribution compartment is equipped with a lightning protection and leakage protection device.

5. The multifunctional equipment compartment of the integrated pole according to claim 1, characterized in that, The sensing sub-compartment is equipped with a light-transmitting medium liquid level monitoring device, a triaxial acceleration monitoring device, and a platinum metal temperature conversion device. The light-transmitting medium liquid level monitoring device is used to monitor and transmit the tilt data of the street lamp, the triaxial acceleration monitoring device is used to monitor and transmit the vibration data of the street lamp, and the platinum metal temperature conversion device is used to monitor and transmit the temperature data inside the multifunctional equipment compartment.

6. The multifunctional equipment compartment of the integrated pole according to claim 1, characterized in that, The wiring sub-compartment is divided into a network wiring area and a power distribution wiring area, and the network wiring area supports fiber optic connections to RJ45, RS485, and RS232.

7. The multifunctional equipment compartment of the integrated pole according to claim 6, characterized in that, The power distribution wiring area includes a DC wiring area and an AC wiring area, which are responsible for DC power distribution wiring and AC power distribution wiring.

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