An embedded master chip-based power universal platform

Abstract

The utility model relates to electric power field, concretely is a kind of electric power general platform based on embedded main control chip. Including core module, communication module and function module, core module includes main control chip I and solidified serial ports, network port, CAN port, SPI port and inlet / outlet, communication module includes main control chip II and solidified interface, expansion interface, reserved interface connected with main control chip II, solidified interface includes network port, CAN port and serial ports, expansion interface includes analog quantity acquisition interface, inlet / outlet, state indicating port, reserved interface includes digital communication power supply interface and serial ports, function module includes analog quantity acquisition circuit, inlet circuit, outlet circuit and state indicating circuit;Analog quantity acquisition circuit, inlet circuit, outlet circuit and state indicating circuit are connected to core module or communication module.The utility model can reduce the space occupied, and through modularization design and port solidification, improve expandability and development efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power, specifically a general power platform based on an embedded main control chip. Background Technology

[0002] In the power sector, it is necessary to monitor the operating status of numerous power devices. This naturally requires collecting and transmitting the operating status parameters (current, voltage, etc.) of these devices, and then feeding back control commands to them. Monitoring systems are generally based on embedded main control chips. Currently, in embedded product development, hardware and software designs are mostly customized, lacking versatility, resulting in long development cycles and high costs. In existing technologies, some manufacturers have attempted to improve versatility through standardized interface designs, but the following problems still exist: the core board size is too large, making it difficult to adapt to the needs of compact devices; interfaces between modules are not standardized, resulting in poor scalability; and low efficiency due to repetitive development of underlying drivers.

[0003] A certain manufacturer uses a Cortex-M4 core board with peripheral modules, but the core board is large (80mm×60mm) and the port functions are not fixed, so the driver still needs to be redesigned for different applications. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a general-purpose power platform based on an embedded main control chip, a miniaturized core module to reduce space occupation, and improved scalability and development efficiency through modular design and port solidification.

[0005] To solve the aforementioned technical problem, the present invention adopts the following technical solution: a general-purpose power platform based on an embedded main control chip, comprising a core module, a communication module, and a functional module. The core module includes a main control chip I, which is connected to a fixed serial port, network port, CAN port, SPI port, and input / output ports. The communication module includes a main control chip II and fixed interfaces, expansion interfaces, and reserved interfaces connected to the main control chip II. The fixed interfaces include a network port, CAN port, and serial port. The expansion interfaces include an analog signal acquisition interface, input / output ports, and a status indicator port. The reserved interfaces include a digital communication power supply interface and a serial port. The functional module includes an analog signal acquisition circuit, an input circuit, an output circuit, and a status indicator circuit. The analog signal acquisition circuit, input circuit, output circuit, and status indicator circuit are connected to the core module or the communication module.

[0006] Furthermore, the core module is set on the core board, the communication module is set on the communication board, the analog signal acquisition circuit is set on the acquisition board, the input and output circuits are set on the input / output board, and the status indicator circuit is set on the status indicator board. The core board, communication board, acquisition board, input / output board, and status indicator board are connected by plug-in connection.

[0007] Furthermore, the analog signal acquisition circuit includes an AD conversion chip. The input terminal of the AD conversion chip is connected to the analog signal acquisition sensor, and the output terminal of the AD conversion chip is connected to the SPI port of the core module or the analog signal acquisition interface of the communication module.

[0008] Furthermore, the input circuit includes a TVS diode and an optocoupler. One end of the TVS diode is connected to the negative terminal of the input terminal, and the other end of the TVS diode is connected to the positive terminal of the input terminal. Pin 1 of the optocoupler is connected to the positive terminal of the input terminal through a current-limiting resistor. Pin 3 of the optocoupler is connected to the positive terminal of the input terminal. The positive and negative terminals of the input terminal are connected to the input acquisition device. Pin 6 of the optocoupler is connected to the input port of the core module or the communication module.

[0009] Furthermore, the output circuit includes a signal amplifier and a relay. The input terminal of the signal amplifier is connected to the output port of the core module or communication module. The output terminal of the signal amplifier is connected to the relay through a protection diode. The coil output terminal of the relay is connected to the output terminal of the signal amplifier and the positive terminal of the protection diode. The coil input terminal of the relay is connected to the +5V power supply and the negative terminal of the protection diode. The safety contact input terminal and safety contact output terminal of the relay are the positive and negative output terminals of the output circuit, respectively.

[0010] Furthermore, the core module also includes a memory, a watchdog circuit, and a clock circuit.

[0011] The beneficial effects of this utility model are as follows: This utility model adopts a modular design by combining a core module, a communication module, and a functional module. It can expand peripheral circuits and port to different baseboards to meet the functional requirements of power smart terminal products such as data sampling, input / output, status display, and communication, thereby improving the system's flexibility and scalability. By bringing out the I / O port functions of the core module and fixing them, driver development is reduced and development efficiency is improved.

[0012] This invention develops a universal power platform based on an embedded main control chip, which solidifies the core module port functions, facilitates the development of general-purpose library programs, reduces the cost of repetitive design of core components, and improves development efficiency. The universal platform adopts a modular design, allowing for peripheral circuit expansion and porting to different baseboards to meet the functional requirements of different application scenarios, improving system flexibility and scalability, and meeting the functional requirements of various products. In the future, mass production and maintenance costs of related products can be reduced. The construction of the universal platform solves the problems currently prevalent in product development, such as long development cycles, poor market fit (only meeting single needs), and low levels of generalization and platformization. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the core module. Figure 2 This is a block diagram of the communication module. Figure 3 This is the circuit schematic of the analog signal acquisition module; Figure 4 This is the schematic diagram of the input circuit; Figure 5 This is the schematic diagram of the circuit. Detailed Implementation

[0014] The present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0015] Example 1 This utility model provides a general-purpose power platform based on an embedded main control chip. This platform adopts a modular design approach, covering various product functional requirements. Based on the characteristics of embedded products, it uses a combination of a core module, a communication module, and functional modules for its general-purpose platform design. The core module uses a Cortex-M4 series controller as the main control chip I, integrating common resources such as on-chip storage, watchdog timer, and real-time clock. Some I / O ports of the main control chip I are embedded as serial ports (USART*4), Ethernet ports (RJ45), CAN ports (CAN), SPI ports (analog signal acquisition), and input / output ports (KI*12 / KO*12) and are brought out externally. The communication module uses DC24V power supply and has one Ethernet port (RJ45), one CAN port (CAN), and four serial ports (RS). The module uses 485*3 and RS232 as fixed interfaces, and has expansion interfaces such as analog signal acquisition (SPI2), input / output (KI*8+DO*8), and status indication (LED). It also reserves DC5V and serial communication ports to realize digital communication function expansion. The functional module includes analog signal acquisition circuit, input circuit, output circuit and status indication circuit. Depending on the application scenario, the analog signal acquisition circuit, input circuit, output circuit and status indication circuit are connected to the core module or communication module.

[0016] In this embodiment, the core module is mounted on the core board, the communication module is mounted on the communication board, the analog signal acquisition circuit is mounted on the acquisition board, the input and output circuits are mounted on the input / output board, and the status indicator circuit is mounted on the status indicator board. The core board, communication board, acquisition board, input / output board, and status indicator board are connected via plug-in connections. These connections include horn-shaped flexible flat cables, pin connectors, and green terminal blocks. Modular design and plug-in connections effectively reduce the size of the core module, fixed ports improve scalability and development efficiency, and standardized interfaces reduce the cost of repetitive hardware design.

[0017] like Figure 1As shown, the core module includes a main control chip I, model GD32F407. The main control chip I is connected to a pre-installed serial port T, Ethernet port, CAN port, SPI port, and I / O pins. The core module uses a plug-in design, fixed to the functional modules via two dual-row 18-pin connectors. The core module integrates common resources such as storage, watchdog timer, and real-time clock, and pre-installs the serial port, Ethernet port, CAN port, SPI port, and I / O pins. Through port function pre-installation, the underlying driver design is pre-installed, meeting the application development requirements based on a general-purpose platform. The overall size of the core module is 60mm*46mm, which is more than one-third smaller than a conventional core board.

[0018] like Figure 2 As shown, the communication module includes a main control chip II and fixed interfaces, expansion interfaces, and reserved interfaces connected to the main control chip II. The fixed interfaces include a network port, a CAN port, and a serial port. The expansion interfaces include an analog signal acquisition interface, an input / output port, and a status indicator port. The reserved interfaces include a digital communication power supply interface and a serial port. In this embodiment, the main control chip II is model GD32F407. The communication module is powered by DC24V and has one network port, one CAN port, and four serial communication ports, meeting the communication needs of conventional products. It has expansion module interfaces for analog signal acquisition, input / output, and status indication, and reserves DC5V and serial communication ports, enabling module cascading and expansion functions.

[0019] The functional module includes analog signal acquisition circuit, input circuit, output circuit and status indication circuit; depending on the application scenario, the analog signal acquisition circuit, input circuit, output circuit and status indication circuit are connected to the core module or communication module.

[0020] like Figure 3 As shown, the analog signal acquisition circuit includes an AD conversion chip. The input of the AD conversion chip is connected to the analog signal acquisition sensor, and the output of the AD conversion chip is connected to the SPI port of the core module or the analog signal acquisition interface of the communication module. In this embodiment, the AD conversion chip used is the Analog Devices (ADI) AD7606 chip. This chip uses a single 5V power supply, has 8 channels of 16-bit synchronous sampling input, a maximum sampling frequency of 200kSPS, and can process ±10V and ±5V true bipolar signals. The module uses the AD chip to synchronously monitor 8 channels of analog signals, sets the ±5V signal input, the sampling frequency to 20k, and uses the SPI interface to read the sampling data of 6 channels. Pin 8 of the AD7606 chip is the range pin. Pulling this pin low means the range of the AD conversion chip is ±5V, and pulling this pin high means the range of the AD conversion chip is ±10V. In this embodiment, this pin is grounded, i.e., pulled low, with a range of 5V.

[0021] The analog signal acquisition circuit connects to the communication module via a terminal plug-in method to realize 8-channel analog signal acquisition function, which is compatible with sensor signals of different ranges and different signal forms (current, voltage).

[0022] like Figure 4 As shown, the input circuit includes a TVS diode D30 and an optocoupler TLP127. The optocoupler TLP127 provides signal isolation, and the TVS diode D30 provides interference suppression. One end of the TVS diode D30 is connected to the negative input terminal K1_G, and the other end of the TVS diode D30 is connected to the positive input terminal K1+. Pin 1 of the optocoupler TLP127 is connected to the positive input terminal K1+ via a current-limiting resistor R157 and an inductor L1. Pin 3 of the optocoupler TLP127 is connected to the positive input terminal K1+. The positive input terminal K1+ and the negative input terminal K1_G are connected to the input acquisition device. Pin 6 of the optocoupler serves as the output terminal and is connected to the input port of the core module or the communication module.

[0023] like Figure 5 As shown, the output circuit includes a signal amplifier KP4010S and an Omron G6D relay G6D_1A_ASI. The input terminal of the signal amplifier KP4010S is connected to the output port DO1 of the core module or communication module. The output terminal of the signal amplifier KP4010S is connected to the coil output terminal of the relay G6D_1A_ASI through a protection diode D19. The coil output terminal of the relay is connected to the output terminal of the signal amplifier and the positive terminal of the protection diode D19. The coil input terminal of the relay is connected to the +5V power supply and the negative terminal of the protection diode D19. The safety contact input terminal K_in and the safety contact output terminal K_out of the relay are the positive output terminal DO1+ and the negative output terminal DO1- of the output circuit, respectively.

[0024] In this embodiment, the input and output circuits are mounted on an input / output board, which is the same size as the communication board and is stacked on top of it. This reduces the board's footprint and enables 6-channel signal input and 6-channel relay output functionality. The number 6 is a specific value in this embodiment; in other embodiments, the number of input and output circuits can be variable.

[0025] The status indicator circuit integrates 7 sets of LED indicators, which are connected to the function module via an 8-pin flat cable with horn-shaped terminals, enabling power supply and 6-channel operation status indication functions.

[0026] The above description is only the basic principle and preferred embodiment of this utility model. Improvements and substitutions made by those skilled in the art based on this utility model are within the protection scope of this utility model.

Claims

1. A general-purpose power platform based on an embedded main control chip, characterized in that: It includes a core module, a communication module, and a functional module. The core module includes a main control chip I, which is connected to a fixed serial port, network port, CAN port, SPI port, and input / output ports. The communication module includes a main control chip II and fixed interfaces, expansion interfaces, and reserved interfaces connected to the main control chip II. The fixed interfaces include a network port, a CAN port, and a serial port. The expansion interfaces include an analog signal acquisition interface, input / output ports, and a status indicator port. The reserved interfaces include a digital communication power supply interface and a serial port. The functional module includes an analog signal acquisition circuit, an input circuit, an output circuit, and a status indicator circuit. The analog signal acquisition circuit, input circuit, output circuit, and status indicator circuit are connected to the core module or the communication module.

2. The general-purpose power platform based on an embedded main control chip according to claim 1, characterized in that: The core module is located on the core board, the communication module is located on the communication board, the analog signal acquisition circuit is located on the acquisition board, the input and output circuits are located on the input / output board, and the status indicator circuit is located on the status indicator board. The core board, communication board, acquisition board, input / output board, and status indicator board are connected by plug-in connection.

3. The general-purpose power platform based on an embedded main control chip according to claim 1, characterized in that: The analog signal acquisition circuit includes an AD conversion chip. The input terminal of the AD conversion chip is connected to the analog signal acquisition sensor, and the output terminal of the AD conversion chip is connected to the SPI port of the core module or the analog signal acquisition interface of the communication module.

4. The general-purpose power platform based on an embedded main control chip according to claim 1, characterized in that: The input circuit includes a TVS diode and an optocoupler. One end of the TVS diode is connected to the negative terminal of the input terminal, and the other end of the TVS diode is connected to the positive terminal of the input terminal. Pin 1 of the optocoupler is connected to the positive terminal of the input terminal through a current-limiting resistor. Pin 3 of the optocoupler is connected to the positive terminal of the input terminal. The positive and negative terminals of the input terminal are connected to the input acquisition device. Pin 6 of the optocoupler is connected to the input port of the core module or the communication module.

5. The general-purpose power platform based on an embedded main control chip according to claim 1, characterized in that: The output circuit includes a signal amplifier and a relay. The input terminal of the signal amplifier is connected to the output port of the core module or communication module. The output terminal of the signal amplifier is connected to the relay through a protection diode. The coil output terminal of the relay is connected to the output terminal of the signal amplifier and the positive terminal of the protection diode. The coil input terminal of the relay is connected to the +5V power supply and the negative terminal of the protection diode. The safety contact input terminal and safety contact output terminal of the relay are the positive and negative output terminals of the output circuit, respectively.

6. The general-purpose power platform based on an embedded main control chip according to claim 1, characterized in that: The core module also includes a memory, a watchdog circuit, and a clock circuit.

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