CN211405485U

CN211405485U - Wisdom electrical power generating system with many shunt control and charges of electricity measurement function

Info

Publication number: CN211405485U
Application number: CN202020471855.3U
Authority: CN
Inventors: 郑清秋; 张晨波; 唐金锐; 周玲; 杨均剑
Original assignee: Luoyu Energy Technology Guangdong Co ltd
Current assignee: Luoyu Energy Technology Guangdong Co ltd
Priority date: 2020-04-03
Filing date: 2020-04-03
Publication date: 2020-09-01
Anticipated expiration: 2030-04-03

Abstract

The invention relates to the technical field of intelligent electric poles, in particular to an intelligent power supply system with multi-branch control and electric charge metering functions. The device comprises an upper computer, a control device and a power supply device, wherein the power supply device is used for processing 220V power grid voltage and providing output of various voltage levels through a plurality of branches, and any one of the plurality of branches is provided with a metering detection device and a switch device; the metering detection device is used for collecting power, voltage, current, power consumption and leakage flow data of the load equipment when the corresponding branch works normally, and the switch device is used for realizing the on-off of the corresponding branch; the control device is used for receiving and processing the data collected by the metering detection device and controlling the on-off state of the switching device; the upper computer is used for receiving the data uploaded by the control device and issuing a control instruction to the control device. The intelligent electric pole can be better applied to the intelligent electric pole.

Description

Wisdom electrical power generating system with many shunt control and charges of electricity measurement function

Technical Field

The invention relates to the technical field of intelligent electric poles, in particular to an intelligent power supply system with multi-branch control and electric charge metering functions.

Background

The intelligent electric pole is also called a multifunctional intelligent pole or an intelligent pole tower, is networked with a system platform through various mounted devices, and can provide a series of functions such as intelligent lighting, video monitoring, traffic guidance, traffic monitoring, environment monitoring, 5G communication, information publishing, public broadcasting, public WLAN, emergency help seeking and the like. The bottom of the smart pole is usually provided with an equipment bay, which provides a dedicated chassis for distribution, communication and monitoring services for various types of equipment mounted thereon.

Can carry the equipment of multiple different functions on the wisdom pole, and these equipment generally all belong to different use units, so need measure respectively the charges of electricity. However, if the mode that all the devices are connected with the electric meter respectively is adopted, the strong current is put on the rod, so that the life safety of pedestrians can be endangered; and when a fault occurs on a certain line, it is difficult to determine the specific fault line, so that the maintenance difficulty is increased.

In addition, various devices with different functions mounted on the intelligent electric pole often need different levels of voltage, such as 220VAC, 48VDC, 24VDC, 12VDC and other voltage levels, and power supply devices for the intelligent electric pole are not available in the current market.

The device can realize commercial power input and multi-path 48V direct current power output, is provided with a shunt electric energy metering module which can realize six-shunt electric energy metering, and uploads related electric energy data to a power environment monitoring host through an RS485 communication module; although it can realize simple many shunts direct current energy measurement, nevertheless can't export many voltage levels, and does not have circuit protection device and circuit, can't satisfy the complex environment of wisdom pole, can't guarantee the power consumption safety.

In the patent with chinese patent publication No. CN206685898U, a shunt-metering dc power distribution device is proposed, which has an ac input end connected to an ac power supply and a dc input end connected to a dc power supply, where the ac input end is converted into dc power by an ac/dc conversion module, and then is connected to a dc distribution module with a circuit of the dc input end, the dc distribution module is connected to a multi-path dc output line, the dc output line is connected in series with a shunt-metering module, the shunt-metering module is connected to a data acquisition device, and then transmits data to a remote operation monitoring system by a wireless network transmission module; although the device can realize shunt output and metering of multiple voltage grades, no remote control means is used for assisting maintenance, and when a line fault occurs, the whole line can be disconnected and maintained.

Chinese patent publication No. CN207021906U proposes a power supply device having outputs of various voltage levels. The multiple DC voltage grades are integrated into an integrated DC power supply. The method for realizing multi-level voltage output of the power supply device comprises the steps that AC/DC and DC/DC realize voltage level conversion, and then the output of different voltage levels is realized by connecting a plurality of direct current or alternating current busbars with a load; although it can realize the output of the multiple voltage class of multichannel, nevertheless do not have measurement, monitoring, protection device, can't satisfy the complex environment of multi-functional smart pole, can't ensure the power consumption safety, mainly embody following several: 1. the power output uses the female row, can't avoid because the short circuit problem that rainwater invaded and leads to. 2. And a detection protection device is not provided, a line with a problem cannot be disconnected in time, and once a fault occurs, the whole power supply cannot supply power. 3. The device has no electric energy metering equipment, and can not carry out shunt metering on the devices of a plurality of different manufacturers on the multifunctional intelligent rod.

The Chinese patent publication No. CN102064704B proposes a power supply control method and device with single-circuit multi-voltage output, the device mentioned in the patent document can meet the voltage requirements required by different loads, and solve the problems that a plurality of power supplies are required to output different voltages or the power supplies are made into multi-path output and selectively supply power to the loads through control conversion; although it has solved the problem that different voltage class power output satisfied different loads power supplies, can't satisfy the condition that a plurality of mount equipment need the power supply simultaneously on the multi-functional wisdom pole, and the device that this patent relates can't satisfy measurement, monitoring and protect function at the required each equipment power supply line of wisdom pole.

Disclosure of Invention

The present invention provides an intelligent power system with multi-branch control and electricity charge metering that overcomes some or all of the deficiencies of the prior art.

The intelligent power supply system with the multi-branch control and electric charge metering functions comprises an upper computer, a control device and a power supply device, wherein the power supply device is used for processing 220V power grid voltage and providing output of multiple voltage levels through multiple branches, and a metering detection device and a switch device are arranged at any position of the multiple branches; the metering detection device is used for collecting power, voltage, current, power consumption and leakage flow data of the load equipment when the corresponding branch works normally, and the switch device is used for realizing the on-off of the corresponding branch; the control device is used for receiving and processing the data collected by the metering detection device and controlling the on-off state of the switching device; the upper computer is used for receiving the data uploaded by the control device and issuing a control instruction to the control device.

Through the power supply system, the output of multiple voltage levels can be provided by arranging the multiple branches, so that the requirement of the equipment loaded on the intelligent electric pole on the multi-voltage-level output can be met. And because each branch is provided with a metering detection device, the electricity consumption of each branch can be metered and charged independently.

In addition, the metering detection device can also monitor the operating parameters of each branch circuit simultaneously, and the control device can disconnect the corresponding branch circuit in time when each branch circuit is in an abnormal condition through the matching with the corresponding switch device, so that the functions of leakage current protection, overload protection, overvoltage protection and the like are better realized; this not only can fix a position the problem sooner and then supplementary maintenance personal solve the problem fast, but also makes can not influence the normal operating of all the other branches when certain branch appears unusually.

Meanwhile, data such as power, voltage, current, power consumption, leakage current and the like of the load equipment collected by the metering detection device when the corresponding branch works normally can be uploaded to the upper computer through the control device, so that abnormal data can be better provided, and maintenance work of maintenance personnel is assisted.

In addition, because the on-off state of the switch device can be controlled by the control device, the switch device can be controlled by the control device when the corresponding branch circuit is abnormal, and the control of the switch device can be realized by sending an instruction to the control device through the upper computer, so that the remote management of each device loaded on the intelligent electric pole can be better realized. The control device can actively disconnect the shunt when a certain shunt fails, so that the influence of the shunt on other shunts can be better avoided, and the upper computer can remotely control the switch device to disconnect the switch device when the certain shunt is defaulted and conduct the switch device after related expenses are paid.

Preferably, the control device comprises an MCU unit, a power supply unit, a storage unit and a communication unit, wherein the MCU unit is used for realizing a data processing function, the power supply unit is used for realizing a power supply function, the storage unit is used for realizing a data storage function, and the communication unit is used for realizing a communication function between the control device and the upper computer;

the data processing of the MCU unit comprises the steps of processing data collected by the metering detection device, uploading electric quantity data of corresponding branches to the upper computer through the communication unit, sending a control instruction to the switching device to realize disconnection of the corresponding branches when the corresponding branch parameters are abnormal, and receiving the control instruction of the upper computer to realize on-off control of any switching device.

In the invention, the monitoring and control of the power supply device can be better realized through the arrangement of the control device.

Preferably, the MCU unit comprises a control chip, and the model of the control chip is STM32F103VET 6. Therefore, the method is convenient to realize.

Preferably, the power supply unit includes a first voltage conversion chip for converting a +24V voltage into a +5V voltage and a second voltage conversion chip for converting the +5V voltage into a +3.3V voltage; the model of the first voltage conversion chip is LM2596SX-5.0/NOPB, and the model of the second voltage conversion chip is AMS 1117-3.3.

In the invention, the +24V voltage can be preferably converted into the +3.3V voltage through the first voltage conversion chip and the second voltage conversion chip, so that the power supply to the control device can be preferably realized.

Preferably, the power supply unit further comprises a charging circuit and a rechargeable battery, and a battery interface for accessing the rechargeable battery is arranged at the charging circuit; the charging circuit comprises a battery charging chip, the input of the battery charging chip is connected with the output voltage of a first voltage conversion chip, and the output end of the first voltage conversion chip is connected with the positive electrode of the rechargeable battery through a battery interface so as to charge the rechargeable battery; a schottky diode with the model number of SS34 is arranged at the input end of the second voltage conversion chip, the input end of the battery charging chip U8 is connected to the anode of the schottky diode, and the anode of the rechargeable battery is connected to the cathode of the schottky diode through a battery interface P7.

In the invention, by arranging the charging circuit and the rechargeable battery, when voltage is output at the first DC/DC converter, the power supply of the control device can be provided by a power supply branch formed by the first voltage conversion chip and the second voltage conversion chip, and meanwhile, the output at the first voltage conversion chip can charge the rechargeable battery through the charging circuit; when no voltage output exists at the first DC/DC converter, the power supply of the control device can be provided through a power supply branch formed by the rechargeable battery and the second voltage conversion chip, so that the standby operation of the control device is better ensured.

Preferably, the storage unit comprises an EEPROM memory and a Flash memory, the EEPROM memory comprises an EEPROM memory chip with the model number AT24C256C-SSHL-T, and the Flash memory comprises a Flash memory chip with the model number W25Q128 JVSSIQTR. So that the storage of data can be preferably achieved.

Preferably, the control device further comprises a temperature detection unit and a cooling fan, wherein the temperature detection unit is used for acquiring the ambient temperature of the control device in real time, and the cooling fan is used for realizing air cooling and cooling of the control device; the data processing of the MCU unit also comprises the processing of the environmental temperature detected by the temperature detection unit and the control of the operation of the heat dissipation fan when the environmental temperature exceeds a set threshold value so as to realize the heat dissipation of the control device. Thereby being capable of better realizing the cooling of the ambient temperature.

Preferably, the communication unit comprises a 485 communication unit and an Ethernet communication unit, wherein the 485 communication unit comprises a 485 communication chip with the model number SP3485EN-L/TR, and the Ethernet communication unit comprises an Ethernet control chip with the model number W5500 and an RJ45 module with the model number RJ45_ HR 911105A. Therefore, communication between the control device and the upper computer can be preferably realized.

Drawings

Fig. 1 is a block diagram schematically illustrating a power supply system in embodiment 1;

FIG. 2 is a block diagram schematically showing a power supply device according to embodiment 1;

FIG. 3 is a block diagram schematically showing a control apparatus in embodiment 1;

FIG. 4 is a circuit diagram of an MCU unit in embodiment 1;

FIG. 5 is a circuit diagram of an MCU unit in embodiment 1;

fig. 6 is a circuit diagram of a reset circuit in embodiment 1;

fig. 7 is a circuit diagram of an LSE crystal oscillator circuit in embodiment 1;

fig. 8 is a circuit diagram of a capacitive filter circuit in embodiment 1;

fig. 9 is a circuit diagram of a power indicator circuit in embodiment 1;

fig. 10 is a circuit diagram of an SWD interface circuit in embodiment 1;

fig. 11 is a circuit diagram of a reserved serial port interface circuit in embodiment 1;

fig. 12 is a circuit diagram of a power supply unit in embodiment 1;

fig. 13 is a circuit diagram of a charging circuit in embodiment 1;

FIG. 14 is a circuit diagram of an EEPROM memory in embodiment 1;

FIG. 15 is a circuit diagram of a Flash memory in embodiment 1;

fig. 16 is a circuit diagram of the temperature sensor in embodiment 1;

fig. 17 is a circuit diagram of a radiator fan drive circuit in embodiment 1;

fig. 18 is a circuit diagram of a 485 communication unit in embodiment 1;

fig. 19 is a circuit diagram of an ethernet communication unit in embodiment 1;

fig. 20 is a circuit diagram of an RJ45 module in embodiment 1;

fig. 21 is a circuit diagram of an ac metering monitoring circuit in embodiment 1;

fig. 22 is a circuit diagram of a digital isolation chip and its peripheral circuits in embodiment 1;

fig. 23 is a circuit diagram of a relay and a relay drive circuit in embodiment 1;

fig. 24 is a circuit diagram of a dc meter monitoring circuit in embodiment 1;

fig. 25 is a circuit diagram of a medium current MOS transistor control circuit in embodiment 1;

fig. 26 is a circuit diagram of a medium current MOS transistor control circuit in embodiment 1;

fig. 27 is a circuit diagram of a metering power supply unit in embodiment 1.

Detailed Description

For a further understanding of the invention, reference should be made to the following detailed description taken in conjunction with the accompanying drawings and examples. It is to be understood that the examples are illustrative of the invention and not limiting.

Example 1

As shown in fig. 1, the present embodiment provides a power supply system for a smart pole, which includes an upper computer, a control device and a power supply device, wherein the power supply device is configured to process a 220V grid voltage and provide outputs of multiple voltage levels through multiple branches, and any one of the multiple branches is provided with a metering detection device and a switch device; the metering detection device is used for collecting power, voltage, current, power consumption and leakage flow data of the load equipment when the corresponding branch works normally, and the switch device is used for realizing the on-off of the corresponding branch; the control device is used for receiving and processing the data collected by the metering detection device and controlling the on-off state of the switching device; the upper computer is used for receiving the data uploaded by the control device and issuing a control instruction to the control device.

Make through the electrical power generating system of this embodiment, it can provide the output of multiple voltage class through setting up a plurality of branches, so can satisfy the demand that the equipment that loads on the wisdom pole was equipped to output of many voltage classes. And because each branch is provided with a metering detection device, the electricity consumption of each branch can be metered and charged independently.

Referring to fig. 2, the power supply apparatus includes a total volume meter and an air switch sequentially connected to a 220V power grid, and the plurality of branches include an ac branch and a dc branch; the alternating current branch is used for being connected into a 220V alternating current load, the metering detection device at the alternating current branch comprises an alternating current metering monitoring circuit, the switching device at the alternating current branch comprises an intelligent air switch, and the alternating current metering monitoring circuit and the intelligent air switch are sequentially arranged between the air switch and the load.

An AC/DC converter is connected to the air switch and is used for converting 220V power grid voltage into 48V direct current voltage; the AC/DC converter is connected with a first DC/DC converter and a second DC/DC converter, the first DC/DC converter is used for converting the 48V direct current voltage output by the AC/DC converter into 24V direct current voltage, and the second DC/DC converter is used for converting the 48V direct current voltage output by the AC/DC converter into 12V direct current voltage.

The direct current branch comprises a 48V direct current branch connected into the AC/DC converter, a 24V direct current branch connected into the first DC/DC converter and a 12V direct current branch connected into the second DC/DC converter; the 48V direct current branch is used for accessing a 48V direct current load, the 24V direct current branch is used for accessing a 24V direct current load, and the 12V direct current branch is used for accessing a 12V direct current load; the metering detection device at the direct current branch comprises a direct current metering monitoring circuit, and the switching device at the direct current branch comprises an MOS (metal oxide semiconductor) tube controller.

In the embodiment, alternating current and direct current voltages can be output by designing the alternating current branch and the direct current branch, so that the output requirements of different voltage types can be met; by designing the 48V direct current branch, the 24V direct current branch and the 12V direct current branch, the requirements of different voltage grade outputs of direct current power supply can be better met; through the aforesaid, can satisfy the power consumption demand of the different mounting apparatus of wisdom pole department respectively better, and realized the unified access of the power of mounting apparatus on the wisdom pole, unified management, measurement and remote control function along separate routes better.

In this embodiment, through designing total volume ware and air switch, can realize the holistic monitoring of power and protection better, total volume ware can adopt current smart electric meter, and it is conventional device with air switch, does not give any unnecessary details in this embodiment.

In this embodiment, two 220V ac branches are provided, and the maximum load power designed for each 220V ac branch is 1100 w. Therefore, the power supply of the alternating current load mounted on the intelligent electric pole can be better met.

In this embodiment, the rated power of the AC/DC converter is 1500W, the rated power of the first DC/DC converter is 300W, and the rated power of the second DC/DC converter is 500W; two 48V direct current branches are arranged, wherein the load power of one branch is designed to be 600-; two 24V direct current branches are arranged, and the maximum load power of each branch is designed to be 150W; the 12V direct current branches are provided with 8 branches, and the branch comprises two branches with the designed maximum load power of 120W, one branch with the designed maximum load power of 36W, one branch with the designed maximum load power of 30W, two branches with the designed maximum load power of 20W, and two branches with the designed maximum load power of 15W.

Through the design of the power, the synchronous output of the multi-path multi-voltage-level power supply can be better realized, and the power supply has better load carrying capacity.

The AC/DC converter with the rated power of 1500W is adopted, so that the AC/DC converter can be preferably used as a total power supply of all direct current branches.

It should be understood that the AC/DC converter, the first DC/DC converter and the second DC/DC converter in this embodiment are all standard devices, and those skilled in the art can know what kind of converter should be selected after knowing the required rated power, input voltage and output voltage, and the present embodiment is not limited to the specific type used.

In this embodiment, the intelligent air switch used at the 220V ac branch can be an existing intelligent air switch, and the air switch can be turned on and off by an instruction of the control device.

Referring to fig. 3, the control device includes an MCU unit, a power supply unit, a storage unit, a temperature detection unit, a heat dissipation fan, and a communication unit. The MCU unit is used for realizing a data processing function, the power supply unit is used for realizing a power supply function, the storage unit is used for realizing a data storage function, the temperature detection unit is used for acquiring the ambient temperature of the control device in real time, the cooling fan is used for realizing air cooling and heat dissipation of the control device, and the communication unit is used for realizing the communication function of the control device and an upper computer;

the data processing of the MCU unit comprises the steps of processing the environment temperature detected by the temperature detection unit, controlling the operation of a cooling fan to realize the cooling of the control device when the environment temperature exceeds a set threshold value, processing the data collected by the metering detection device (comprising an alternating current metering monitoring circuit and a direct current metering monitoring circuit), uploading the electric quantity data of the corresponding branch to the upper computer through the communication unit, sending a control instruction to the switching device (comprising an intelligent air switch and an MOS (metal oxide semiconductor) tube controller) to realize the disconnection of the corresponding branch when the corresponding branch parameter is abnormal, and receiving the control instruction of the upper computer to realize the on-off control of any switching device (comprising the intelligent air switch and the MOS tube controller).

In this embodiment, the monitoring and control of the power supply device can be preferably realized by the arrangement of the control device.

Referring to fig. 4 and 5, the MCU unit includes a control chip and an MCU peripheral circuit, the model of the control chip is STM32F103VET6, and the MCU peripheral circuit includes a reset circuit, an LSE crystal oscillator circuit, a capacitor filter circuit, a power indicator circuit, an SWD interface circuit, and a reserved serial interface circuit.

Referring to fig. 6, a circuit diagram of a reset circuit is shown, the reset circuit is connected to a reset pin (pin 14) of the control chip, and is used for generating a reset signal.

Referring to fig. 7, the frequency of the LSE crystal oscillator circuit is 32.768KHz, and the LSE crystal oscillator circuit is connected to

pins

8 and 9 of the control chip, and is used as a clock source.

As shown in fig. 8, the capacitor filter circuit includes a capacitor connected between the power supply terminal (VCC) and the ground terminal (GND) of the chip, and is used for filtering the power supply voltage.

As shown in fig. 9, the power indicator circuit includes 4 light emitting diodes (D1, D2, D3, D4) connected in parallel, and one end of each of the light emitting diodes (D1, D2, D3, D4) is connected to the power supply terminal (VCC) of the chip; the light emitting diode D1 is a blue light emitting diode, the light emitting diodes D2 and D3 are green light emitting diodes, and the light emitting diode D4 is a red light emitting diode; the other end of the light emitting diode D1 is connected to a ground terminal (GND) through a resistor R1, the light emitting diodes D2, D3 and D4 are connected to pins 60, 61 and 62 of the control chip through resistors R2, R4 and R5, respectively, and the resistances of the resistors R1, R2, R4 and R5 are all 2K Ω.

Referring to fig. 10, a circuit diagram of the SWD interface circuit is shown, in which a data port (MCU _ SWDIO) and a clock port (MCU _ SWCLK) are respectively connected to pins 72 and 76 of the control chip, which are used to provide a debug interface.

Referring to fig. 11, the circuit diagram of the reserved serial port interface circuit in this embodiment has 2 reserved serial ports, in which the data input ports (UART2_ RX and UART4_ RX) are respectively connected to

pins

26 and 79 of the control chip, and the data output ports (UART2_ TX and UART4_ TX) are respectively connected to

pins

25 and 78 of the control chip, and are used to provide a spare serial port interface.

As shown in fig. 12, the power supply unit includes a first voltage conversion chip U6 and a second voltage conversion chip U7, an input voltage of the first voltage conversion chip U6 is connected to an output voltage of the first DC/DC converter, and the first voltage conversion chip U6 is configured to convert a +24V voltage output by the first DC/DC converter into a +5V voltage; the input voltage of the second voltage conversion chip U7 is connected to the output voltage of the first voltage conversion chip U6, and the second voltage conversion chip U7 is used for converting the +5V voltage of the output of the first voltage conversion chip U6 into +3.3V voltage, thereby serving as a chip power supply terminal (VCC) of the control chip.

In this embodiment, the first voltage conversion chip U6 and the second voltage conversion chip U7 can preferably convert the +24V voltage output by the first DC/DC converter into a +3.3V voltage, so that the control device can be preferably powered.

The model of the first voltage conversion chip U6 is LM2596SX-5.0/NOPB, and the model of the second voltage conversion chip U7 is AMS 1117-3.3.

As shown in fig. 13, the power supply unit further includes a charging circuit and a rechargeable battery, and the charging circuit is provided with a battery interface P7 for accessing the rechargeable battery; the charging circuit comprises a battery charging chip U8, the input of the battery charging chip U8 is connected to the output voltage of a first voltage conversion chip U6, and the output end of the first voltage conversion chip U6 is connected to the anode of the rechargeable battery through a battery interface P7 to charge the rechargeable battery. The input end of the second voltage conversion chip U7 is provided with a Schottky diode with the model SS34, the input end of the battery charging chip U8 is connected to the anode of the Schottky diode, and the anode of the rechargeable battery is connected to the cathode of the Schottky diode through a battery interface P7.

In the embodiment, the charging circuit and the rechargeable battery are arranged, so that when there is a voltage output at the first DC/DC converter, the power supply of the control device can be provided through the power supply branch formed by the first voltage conversion chip U6 and the second voltage conversion chip U7, and at the same time, the output at the first voltage conversion chip U6 can charge the rechargeable battery through the charging circuit; when no voltage output exists at the first DC/DC converter, the power supply of the control device can be provided through the power supply branch formed by the rechargeable battery and the second voltage conversion chip U7, so that the standby operation of the control device is preferably ensured.

The model of the battery charging chip U8 is HX 4054A.

In this embodiment, the storage unit includes an EEPROM memory and a Flash memory, so that data can be preferably stored.

Referring to fig. 14, the EEPROM memory comprises an EEPROM memory chip with model number AT24C256C-SSHL-T, a control line SCL _ EEPROM of the EEPROM memory chip is connected to a pin 92 of the control chip, and a data line SDA _ EEPROM of the EEPROM memory chip is connected to a pin 93 of the control chip.

Referring to fig. 15, the Flash memory includes a Flash memory chip of W25Q128 jvsitgr type, and the Flash memory chip is connected to the control chip through the SPI interface.

In this embodiment, the temperature detection unit includes a temperature sensor, the model of the temperature sensor is SHT10 or DHT11, and the temperature sensor is connected to the control chip through a serial interface.

Referring to fig. 16, it is a circuit diagram of the temperature sensor with model SHT10, wherein the DATE pin and SCK pin of the temperature sensor are connected to pins 48 and 47 of the control chip, respectively.

In this embodiment, the pins 81-88, the pins 55-59 and the pins 63-64 of the control chip are all used as data output ports for outputting control signals.

As shown in fig. 17, the cooling fan includes a cooling fan driving circuit, a control interface of the cooling fan driving circuit is connected to the data output port of the control chip, and the cooling fan is connected to the cooling fan driving circuit.

In this embodiment, the communication unit includes a 485 communication unit and an ethernet communication unit. Therefore, data communication between the upper computer and the control device can be realized in a bus and Ethernet mode.

Referring to fig. 18, the 485 communication unit includes a 485 communication chip with model number SP3485EN-L/TR, pin 1 of the 485 communication chip is connected to pin 69 of the control chip, pins 2 and 3 of the 485 communication chip are connected to pin 67 of the control chip, and pin 4 of the 485 communication chip is connected to pin 68 of the control chip.

As shown in fig. 19 and 20, the ethernet communication unit includes an ethernet control chip with a model W5500 and an RJ45 module with a model RJ45_ HR911105A, wherein the ethernet control chip is connected to the control chip through the SPI interface.

As shown in fig. 21 and 22, the alternating current metering monitoring circuit includes an electric energy metering chip with a model number HLW8112 and a digital isolation chip with a model number NSI8141W, and the electric energy metering chip, the digital isolation chip and the control chip are all communicated through SPI interfaces.

In the alternating current measurement monitoring circuit, a channel A of the electric energy measurement chip is connected to a load circuit through a sampling resistor (not shown), namely an end A _ LoadCurrent + 'and an end A _ LoadCurrent-' are respectively connected to two ends of the sampling resistor, and the sampling resistor is connected to the load circuit in series, so that the detection of power, voltage, current and electricity consumption of load equipment at the load circuit can be better realized, and the functions of overload protection, overvoltage protection, electricity consumption collection and the like can be better realized through the processing of collected data by a control device and the control of a switch device.

In the alternating current metering monitoring circuit, a channel B of the electric energy metering chip is connected into a load circuit through a current transformer (not shown in the figure), namely a terminal B _ LoadCurrent + 'and a terminal B _ LoadCurrent-' are connected into the current transformer, so that the detection of leakage current of the load circuit can be better realized, and the leakage protection can be better realized by processing acquired data by a control device and controlling a switch device. Through designing earth leakage protection, can in time break off corresponding branch road when certain branch road takes place because the device short circuit scheduling problem that leads to like external environment, prevent the phenomenon of "tripping in batches".

In the alternating current measurement monitoring circuit, a pin 5(VP pin) of the electric energy measurement chip is connected to the load circuit through the ground current sampling circuit, so that the insulation of the branch circuit can be better monitored, and the corresponding branch circuit can be timely disconnected when the control device detects that the branch circuit is not insulated from the ground, so that the safety of electric equipment can be better guaranteed. The ground current sampling circuit comprises a resistor R5, a resistor R6 and a capacitor C7, wherein the resistance value of the resistor R5 is 1M omega and is connected in series between the pin 5 of the electric energy metering chip and the voltage output end of the corresponding branch, and the resistor R6 (the resistance value is 1K omega) and the capacitor C7 (the capacitance value is 33nF) are arranged between the pin 5 of the electric energy metering chip and the ground terminal.

In this embodiment, the sampling resistor is a constantan wire resistor.

Referring to fig. 23, the intelligent air switch can be composed of a relay and a relay driving circuit, a control signal input end of the relay driving circuit is connected to a data output port of a control chip, wherein the type of the relay can be G5NB-1A-EDC 5. Therefore, the on-off control of the alternating current branch can be better realized.

As shown in fig. 24, the dc metering monitoring circuit includes an electric energy metering chip of the type HLW8112, and the electric energy metering chip communicates with the control chip through an SPI interface.

In the direct current metering monitoring circuit, the functions to be realized at the A channel, the B channel and the pin 5 of the electric energy metering chip are the same and the same effect is achieved.

In the dc metering monitoring circuit, the ground current sampling circuit connected to the pin 5 of the power metering chip only includes a resistor R11 (with a resistance of 1K Ω) and a capacitor C17 (with a capacitance of 33nF) between the pin 5 and the ground.

As shown in fig. 25 and 26, the MOS transistor controller includes two kinds, one is a high-current MOS transistor control circuit, and the other is a medium-current MOS transistor control circuit. The control signal input end of the high-current MOS tube control circuit and the medium-current MOS tube control circuit is connected to the data output port of the control chip, and the high-current MOS tube control circuit and the medium-current MOS tube control circuit are different in designed working current.

In this embodiment, the dc branches with maximum load powers of 36W, 30W, 20W, and 15W are designed to use the medium current MOS transistor control circuit, and the other dc branches use the large current MOS transistor control circuits.

In the large-current MOS tube control circuit, the resistor R15 is used as a discharge resistor to discharge a small amount of static electricity of G-S, so that malfunction of the MOS tube is prevented, even the MOS tube is broken down, and the equivalent capacitance between G and S electrodes of the MOS tube generates high voltage as long as a small amount of static electricity exists, so that the MOS tube is protected.

In the medium-current MOS tube control circuit, the resistor R18 is used as a discharge resistor to discharge a small amount of static electricity of G-S, so that malfunction of the MOS tube is prevented, even the MOS tube is broken down, and the equivalent capacitance between G and S electrodes of the MOS tube generates high voltage as long as a small amount of static electricity exists, so that the MOS tube is protected.

Referring to fig. 27, chip power supply in the ac metering and monitoring circuit and the dc metering and monitoring circuit is implemented by a metering and power supplying unit. The metering power supply unit comprises a metering power supply chip with the model number of MP150, and an air switch is connected to the input end of the metering power supply chip and used for converting 220V alternating current into available chip power supply voltage. Therefore, the power supply to the alternating current metering monitoring circuit and the direct current metering monitoring circuit can be better realized.

The present invention and its embodiments have been described above schematically, without limitation, and what is shown in the drawings is only one of the embodiments of the present invention, and the actual structure is not limited thereto. Therefore, if the person skilled in the art receives the teaching, without departing from the spirit of the invention, the person skilled in the art shall not inventively design the similar structural modes and embodiments to the technical solution, but shall fall within the scope of the invention.

Claims

1. The utility model provides an intelligence electrical power generating system with many branch control and charges of electricity measurement function which characterized in that: the device comprises an upper computer, a control device and a power supply device, wherein the power supply device is used for processing 220V power grid voltage and providing output of various voltage grades through a plurality of branches, and any one of the plurality of branches is provided with a metering detection device and a switch device; the metering detection device is used for collecting power, voltage, current, power consumption and leakage flow data of the load equipment when the corresponding branch works normally, and the switch device is used for realizing the on-off of the corresponding branch; the control device is used for receiving and processing the data collected by the metering detection device and controlling the on-off state of the switching device; the upper computer is used for receiving the data uploaded by the control device and issuing a control instruction to the control device.

2. The intelligent power system of claim 1, wherein: the control device comprises an MCU unit, a power supply unit, a storage unit and a communication unit, wherein the MCU unit is used for realizing a data processing function, the power supply unit is used for realizing a power supply function, the storage unit is used for realizing a data storage function, and the communication unit is used for realizing a communication function between the control device and an upper computer;

3. The intelligent power system of claim 2, wherein: the MCU unit comprises a control chip, and the model of the control chip is STM32F103VET 6.

4. The intelligent power system of claim 2, wherein: the power supply unit comprises a first voltage conversion chip and a second voltage conversion chip, wherein the first voltage conversion chip is used for converting +24V voltage into +5V voltage, and the second voltage conversion chip is used for converting the +5V voltage into +3.3V voltage; the model of the first voltage conversion chip is LM2596SX-5.0/NOPB, and the model of the second voltage conversion chip is AMS 1117-3.3.

5. The intelligent power system of claim 4, wherein: the power supply unit also comprises a charging circuit and a rechargeable battery, and a battery interface for accessing the rechargeable battery is arranged at the charging circuit; the charging circuit comprises a battery charging chip, the input of the battery charging chip is connected with the output voltage of a first voltage conversion chip, and the output end of the first voltage conversion chip is connected with the positive electrode of the rechargeable battery through a battery interface so as to charge the rechargeable battery; a schottky diode with the model number of SS34 is arranged at the input end of the second voltage conversion chip, the input end of the battery charging chip U8 is connected to the anode of the schottky diode, and the anode of the rechargeable battery is connected to the cathode of the schottky diode through a battery interface P7.

6. The intelligent power system of claim 2, wherein: the storage unit comprises an EEPROM memory and a Flash memory, the EEPROM memory comprises an EEPROM memory chip with the model of AT24C256C-SSHL-T, and the Flash memory comprises a Flash memory chip with the model of W25Q128 JVSSIQTR.

7. The intelligent power system of claim 2, wherein: the control device also comprises a temperature detection unit and a cooling fan, wherein the temperature detection unit is used for acquiring the ambient temperature at the control device in real time, and the cooling fan is used for realizing air cooling and heat dissipation at the control device; the data processing of the MCU unit also comprises the processing of the environmental temperature detected by the temperature detection unit and the control of the operation of the heat dissipation fan when the environmental temperature exceeds a set threshold value so as to realize the heat dissipation of the control device.

8. The intelligent power system of claim 2, wherein: the communication unit comprises a 485 communication unit and an Ethernet communication unit, wherein the 485 communication unit comprises a 485 communication chip with the model number of SP3485EN-L/TR, and the Ethernet communication unit comprises an Ethernet control chip with the model number of W5500 and an RJ45 module with the model number of RJ45_ HR 911105A.