Flexible control device

Abstract

The utility model relates to a flexible control device which is arranged between terminal equipment and external equipment and used for receiving a control instruction sent by the terminal equipment in a power line carrier communication mode, analyzing the control instruction, sending the control instruction to external equipment in a serial port communication mode and returning data sent by the external equipment to the terminal equipment. The flexible control device comprises an MCU module, a carrier communication module and a serial port communication module; the MCU module communicates with terminal equipment through the carrier communication module; the MCU module communicates with external equipment through the serial port communication module; the carrier communication module is used for carrying out power line carrier communication with terminal equipment; the MCU module is used for analyzing the received control instruction; and the serial port communication module is used for sending the analyzed control instruction to external equipment to realize remote flexible control. According to the utility model, the external communication interface is added on the basis of a carrier communication function and is connected and communicated with the external equipment, and remote flexible regulation and control of the terminal equipment to the external equipment are realized in cooperation with carrier communication.

Description

Technical Field

[0001] The utility model belongs to the technical field of power line broadband carrier communication, and in particular relates to a flexible control device. Background Art

[0002] The increasing use of power line carrier communication technology has significant economic benefits and promotional value. my country's low-voltage power grid is complex, facing significant signal attenuation and numerous interference noise sources. A device that enables flexible remote control of external devices by terminal devices through carrier communication is needed. Utility Model Content

[0003] The purpose of the utility model is to provide a flexible control device that interacts with a terminal through power line carrier communication and directly interacts with an external device through serial port communication, thereby realizing remote flexible control of the terminal on its external device.

[0004] The utility model provides a flexible control device, which is arranged between a terminal device and an external device, and is used to receive control instructions sent by the terminal device via power line carrier communication, analyze and send them to the external device via serial port communication, and transmit data sent by the external device back to the terminal device;

[0005] The flexible control device includes an MCU module, a carrier communication module, and a serial communication module;

[0006] The MCU module communicates with the terminal device through the carrier communication module;

[0007] The MCU module communicates with the external device via the serial communication module;

[0008] The carrier communication module is used to perform power line carrier communication with the terminal device;

[0009] The MCU module is used to parse the received control instructions;

[0010] The serial communication module is used to send the parsed control instructions to the external device, so as to perform remote flexible control on the external device.

[0011] Furthermore, the carrier communication module includes a transmitting amplifier circuit, a receiving filter circuit and a coupling transformer, the transmitting amplifier circuit and the receiving filter circuit are connected to the MCU module, and the coupling transformer is connected to the transmitting amplifier circuit, the receiving filter circuit and the terminal device;

[0012] The transmitting amplifier circuit is used to amplify and drive the transmitting signal;

[0013] The coupling transformer is used to couple the signal transmitted by the power line;

[0014] The receiving filter circuit is used to filter the signal coupled from the power line and remove the stray signal.

[0015] Furthermore, the device also includes a power supply module, which is connected to the MCU module, adopts single-phase power supply and full-bridge rectification, and uses large-capacity capacitors to perform ripple operation to ensure normal power supply voltage.

[0016] Furthermore, the device also includes a data storage module, which is connected to the MCU module and uses an SPI interface for data transmission.

[0017] Furthermore, the device also includes an LED indicator light module, which is connected to the MCU module and is used to display the operating status of the flexible control device.

[0018] Furthermore, the device also includes a debugging interface module, which is connected to the MCU module and is used for software debugging and product maintenance and upgrading.

[0019] Furthermore, the serial communication module adopts two-way serial communication to carry out joint control of external devices, and its interface adopts an anti-hot plug structure.

[0020] Furthermore, the MCU module adopts the HiSilicon Hi3911 chip.

[0021] With the above solution, through the flexible control device, an external communication interface is added on the basis of the carrier communication function to connect and communicate with the external device, and the remote flexible control of the terminal device to the external device is realized in conjunction with the carrier communication.

[0022] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention and to implement it according to the contents of the specification, the following is a detailed description of the preferred embodiments of the present invention in conjunction with the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a layout diagram of the flexible control device of the utility model;

[0024] Figure 2 This is an application scenario diagram of the flexible control device of the utility model;

[0025] Figure 3 This is another application scenario diagram of the flexible control device of the utility model;

[0026] Figure 4 This is a schematic structural diagram of the flexible control device of the present utility model;

[0027] Figure 5 This is the principle diagram of the carrier communication module of this utility model. DETAILED DESCRIPTION

[0028] The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0029] Ginseng Figure 1 、 Figure 4 As shown, this embodiment provides a flexible control device, which is arranged between a terminal device and an external device, and is used to receive a control instruction sent by the terminal device through a power line carrier communication method, and send it to the external device through a serial port communication method after parsing, and transmit the data sent by the external device back to the terminal device; the flexible control device includes an MCU module, a carrier communication module, and a serial port communication module; the MCU module communicates with the terminal device through the carrier communication module; the MCU module communicates with the external device through the serial port communication module; the carrier communication module is used to perform power line carrier communication with the terminal device; the MCU module is used to parse the received control instruction; the serial port communication module is used to send the parsed control instruction to the external device, so as to perform remote flexible control of the external device.

[0030] Ginseng Figure 2 As shown, in one application scenario, the flexible control device is connected to the on-site platform environment, and remote reading, data reporting and remote control of the boiler controller are realized.

[0031] Ginseng Figure 3 As shown, in another application scenario, the flexible control device is connected to the on-site platform environment to realize remote reading, data reporting and remote control of the inverter.

[0032] The flexible control device has functions such as low-voltage power line carrier communication, data storage, and management control. Its main functional features are as follows:

[0033] The uplink supports carrier communication, adopts OFDM technology, and the subcarrier supports BPSK, QPSK, 8QAM, 16QAM, and 64QAM modulation modes;

[0034] The downlink supports 2-way serial port communication for connecting to other devices for joint control;

[0035] Support query and reporting of running data and reporting of power outage and restoration events;

[0036] Use single-phase wiring and power supply;

[0037] The product adopts a guide rail structure and is recommended for use indoors, in distribution cabinets, and other scenarios where waterproofing is not required.

[0038] This flexible control device is a terminal product suitable for power line broadband carrier communications. It fully adapts to the environment of my country's power grid and utilizes advanced modulation technology to achieve bidirectional, high-speed, and stable data transmission on power lines, resolving key technical issues in low-voltage power line communications. The flexible control device interacts with the terminal via power line carrier communications and directly with external devices via serial communication, enabling remote and flexible control of the terminal's external devices without any impact on the devices, allowing them to operate independently.

[0039] Ginseng Figure 5 As shown, the carrier communication module includes a transmitting amplifier circuit, a receiving filter circuit and a coupling transformer. The transmitting amplifier circuit and the receiving filter circuit are connected to the MCU module, and the coupling transformer is connected to the transmitting amplifier circuit, the receiving filter circuit and the terminal device; the transmitting amplifier circuit is used to amplify and drive the transmitting signal to increase the transmission distance; the coupling transformer is used to couple the signal transmitted on the power line; the receiving filter circuit is used to filter the signal coupled from the power line, remove the stray signal, and ensure that the effective signal is demodulated.

[0040] The transmit amplifier circuit must offer high performance, with adjustable transmit power and gain. The amplifier itself must suppress spurious harmonics to prevent interference with other devices. The receive filter circuit utilizes a multi-order bandpass filter design to filter out signal noise outside the carrier operating frequency band.

[0041] In this embodiment, the device also includes a power supply module, which is connected to the MCU module and uses single-phase power supply and full-bridge rectification. It utilizes large-capacity capacitors for ripple operation to ensure normal supply voltage. To meet size requirements, this design uses single-phase power supply. To meet the power requirements of the circuit and output the supply voltage as required to ensure normal operation of the equipment, this power supply circuit design uses full-bridge rectification and utilizes large-capacity capacitors for ripple operation to ensure normal supply voltage. Considering power efficiency, a transformer solution is used to convert 220V AC to 12V DC power, and then convert the 12V power supply to each module.

[0042] Considering that the MCU is powered by 3V3 and 1V2, a DC-DC chip is used for power conversion. The 12V to 3V3 voltage conversion provides system power, and the 3V3 to 1V2 voltage conversion provides power for some MCU circuits. The 3V3 is converted to 2V5 output through an LDO to provide the supercapacitor charging voltage.

[0043] Among them, the 12V TO 3V3 power supply circuit uses ETA2845S2G, which is a synchronous buck converter with a wide voltage input of 5V-38V and an output current of 0.4A.

[0044] The 3V3 TO 1V2 power supply circuit uses ETA3406S2F, which is a DCDC voltage converter with a voltage input of 2.6V-5.5V and a maximum output current of 1.2A.

[0045] The 3V3 to 2V5 power supply circuit uses ETA5050V0S2F, which is an LDO power supply chip with a maximum voltage input of 8V and an output current of 0.5A.

[0046] In this embodiment, the device also includes a data storage module, which is connected to the MCU module. To ensure that data is not lost after power failure and to achieve long-term storage, a data storage chip (FLASH) is added to the design and uses an SPI interface for data transmission.

[0047] In this embodiment, the device further includes an LED indicator light module, which is connected to the MCU module and is used to display the operating status of the flexible control device.

[0048] In this embodiment, the device further includes a debugging interface module, which is connected to the MCU module and is used for software debugging and product maintenance and upgrading.

[0049] In this embodiment, the serial communication module uses two serial communication channels to perform joint control of external devices, and its interface adopts a hot-swappable structure to ensure that the connection or disconnection of external devices will not cause damage to the device and will not affect the normal operation of the device.

[0050] In this embodiment, the MCU module uses the HiSilicon Hi3911 chip to complete the modulation and demodulation of the carrier signal and the communication protocol work, which meets the stability of power line data transmission and ensures that the circuit design is simple and easy.

[0051] The above description is only a preferred embodiment of the present invention and does not limit the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A flexible control device, characterized in that: It is located between the terminal device and the external device, and is used to receive control instructions sent by the terminal device via power line carrier communication, parse and send them to the external device via serial port communication, and transmit data sent by the external device back to the terminal device; The flexible control device includes an MCU module, a carrier communication module, and a serial communication module; The MCU module communicates with the terminal device through the carrier communication module; The MCU module communicates with the external device via the serial communication module; The carrier communication module is used to perform power line carrier communication with the terminal device; The MCU module is used to parse the received control instructions; The serial communication module is used to send the parsed control instructions to the external device, so as to perform remote flexible control on the external device.

2. The flexible control device according to claim 1, characterized in that: The carrier communication module includes a transmitting amplifier circuit, a receiving filter circuit and a coupling transformer, the transmitting amplifier circuit and the receiving filter circuit are connected to the MCU module, and the coupling transformer is connected to the transmitting amplifier circuit, the receiving filter circuit and the terminal device; The transmitting amplifier circuit is used to amplify and drive the transmitting signal; The coupling transformer is used to couple the signal transmitted by the power line; The receiving filter circuit is used to filter the signal coupled from the power line and remove the stray signal.

3. The flexible control device according to claim 2, characterized in that: It also includes a power supply module, which is connected to the MCU module, adopts single-phase power supply and full-bridge rectification, and uses large-capacity capacitors for ripple operation to ensure normal power supply voltage.

4. The flexible control device according to claim 3, characterized in that: It also includes a data storage module, which is connected to the MCU module and uses an SPI interface for data transmission.

5. The flexible control device according to claim 4, characterized in that: It also includes an LED indicator light module, which is connected to the MCU module and is used to display the operating status of the flexible control device.

6. The flexible control device according to claim 5, characterized in that: It also includes a debugging interface module, which is connected to the MCU module and is used for software debugging and product maintenance and upgrading.

7. The flexible control device according to claim 1, characterized in that: The serial communication module adopts two-way serial communication to carry out joint control of external devices, and its interface adopts an anti-hot plug structure.

8. The flexible control device according to claim 1, characterized in that: The MCU module uses the HiSilicon Hi3911 chip.

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