Universal control module
By integrating components such as the Loongson 2K0300 processor into a general-purpose control module, the problems of large size, high power consumption, and high cost of industrial control equipment are solved. It realizes efficient and easy-to-use integrated system control for small and medium-sized control systems and provides functions close to those of high-end PLCs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-24
- Publication Date
- 2026-03-31
AI Technical Summary
In existing technologies, industrial control equipment suffers from problems such as large size, high power consumption, high cost, and low integration, and its cost-effectiveness is relatively low, especially in small and medium-sized control scenarios.
A general-purpose control module was designed, integrating multiple interfaces and controllers such as Loongson 2K0300 processor, DDR4 memory bus, CAN bus interface, and Ethernet interface. It realizes adaptive Gigabit Ethernet, Ethercat control network and RS485/422 serial bus interface, and provides standardized interfaces and software tools in conjunction with the Linux open source ecosystem.
It achieves the function of a single subsystem in complex integrated control systems, while also independently realizing integrated system control in small and medium-sized control systems. It balances cost and power consumption, provides functions close to those of high-end PLCs, and is highly easy to use and widely applicable, thus lowering the barrier to entry.
Smart Images
Figure CN121763922A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of industrial field control technology, and specifically relates to a general control module. Background Technology
[0002] In fields such as industrial process control and electrical equipment, there are often requirements for control equipment such as Ethernet communication, bus communication, digital signal acquisition / output control, analog signal acquisition, and motor control functions. In the traditional approach, these functions are often implemented by a combination of multiple devices of different types with relatively simple functions or multiple function boards.
[0003] This approach is suitable for applications with high system complexity, but it suffers from problems such as large size, high power consumption, high cost, low integration, and inflexible application. For small and medium-sized control scenarios that are sensitive to factors such as power consumption, cost, and flexibility, using this combination of devices or modules with low integration and single function to achieve control is relatively inefficient. Summary of the Invention
[0004] In response to one or more of the above-mentioned defects or improvement needs of the existing technology, the present invention provides a general control module that can not only perform corresponding functions as a subsystem in a relatively complex integrated control system, but also independently achieve the goal of integrated system control in small and medium-sized control systems, achieving a balance between cost and power consumption, and being simple, easy to use, and highly efficient.
[0005] To achieve the above objectives, the present invention provides a general control module, including a Loongson 2K0300 processor, a DDR4 memory bus, a CAN bus interface, a network PHY chip, an Ethernet interface, an Ethercat slave interface, an Ethercat controller, a network transformer, an RS232 transceiver, a transceiver LTM2881, and an LCD display interface. The Loongson 2K0300 processor includes a memory controller, a CAN controller, an Ethernet controller, and a UART controller. The memory controller is connected to the DDR4 memory bus and is used to connect to the memory; The CAN controller is connected to the CAN bus interface and is used to transmit signals to the CAN bus and receive signals from the CAN bus. The Ethernet controller is connected to the network PHY chip, and the network PHY chip is connected to the Ethernet interface to realize adaptive gigabit Ethernet; The Loongson 2K0300 processor, the Ethercat controller, the network transformer, and the Ethercat slave interface are connected in sequence to connect a single module or one or more slave stations of multiple Ethercats to form a control network. The UART controller is connected to the RS232 transceiver and is used to connect to external devices. The UART controller is connected to the transceiver LTM2881 via UART1 and 2 pins, and the transceiver LTM2881 is equipped with an RS422 / RS485 interface for implementing an RS485 / 422 serial bus interface. The LCD display interface is used to output video signals.
[0006] As a further preferred embodiment of the present invention, it also includes a JTAG interface and a BIOS; The Loongson 2K0300 processor is connected to the JTAG interface, and the JTAG interface is brought out using a header for processor debugging, hardware debugging and software debugging. The Loongson 2K0300 and the BIOS are connected via SPI0 for booting the Loongson 2K0300 processor.
[0007] As a further preferred embodiment of the present invention, it also includes an RTC battery, a USB interface, and an I... 2 C interface and temperature sensor; The Loongson 2K0300 processor includes a built-in RTC, and the RTC battery is electrically connected to the built-in RTC to provide basic time functions, alarm and timer functions, and system management functions. The USB interface is electrically connected to the Loongson 2K0300 processor. The USB interface includes a USB0 interface and a USB1 interface. The USB0 interface is an OTG interface, and the USB1 interface is a host interface. The I 2 The C interface is electrically connected to both the temperature sensor and the Loongson 2K0300 processor to collect ambient temperature data.
[0008] As a further preferred embodiment of the present invention, the Loongson 2K0300 processor includes a 4-bit SDIO0 interface and a 4-bit SDIO1 interface; The 4-bit SDIO0 interface uses eMMC mode and is connected to the eMMC chip to expand hard disk storage. The 4-bit SDIO1 interface connects to the TF card slot, which is used to select different micro SD cards according to actual needs to achieve data storage.
[0009] As a further preferred embodiment of the present invention, it also includes a driver chip, an SPI3 interface, a full-bridge driver circuit, and a current sensor; The PWM output port of the Loongson 2K0300 processor is connected to the SPI3 interface to the driver chip. The driver chip drives the full-bridge drive circuit and is connected to the current sensor to collect phase current for closed-loop control of the brushless DC motor.
[0010] As a further preferred embodiment of the present invention, it also includes an AD conversion chip, a front-end processing circuit, and a sampling resistor; An SPI2 interface is provided between the Loongson 2K0300 processor and the AD conversion chip; The input terminal of the AD conversion chip is connected to the output terminal of the front-end processing circuit for acquiring voltage signals; the output terminal of the sampling resistor is connected to the input terminal of the front-end processing circuit for processing the voltage signals; the sampling resistor is used to convert 8 channels of 4~20mA current signals into 0.4V~2.00V voltage signals.
[0011] As a further preferred embodiment of the present invention, the Loongson 2K0300 processor includes 8 ADC channels, wherein ADC1~ADC4 are connected to the output terminal of operational amplifier AD8512, the output terminal of the voltage divider resistor network is connected to the input terminal of operational amplifier AD8512, and the input terminal of the voltage divider resistor network is used to acquire 4 channels of 20V~30V voltage signals; ADC5~ADC8 are connected to the output terminal of operational amplifier AD8512, the output terminal of the current sensor is connected to the input terminal of operational amplifier AD8512, and the input terminal of the current sensor is used to acquire 4 channels of 4~20mA current signals.
[0012] As a further preferred embodiment of the present invention, the Loongson 2K0300 processor includes 8 GPIO interfaces, which are connected to optocouplers for acquiring 8 passive switching signals.
[0013] As a further preferred embodiment of the present invention, it also includes a level converter and a power electronic switch. The Loongson 2K0300 processor is connected to the level converter through an 8-channel GPIO interface. The output terminal of the level converter is connected to the input terminal of the optocoupler, and the output terminal of the optocoupler is connected to the input terminal of the power electronic switch. The power electronic switch is controlled by 8 channels of 24V@3A switching output signals, and the output circuit has freewheeling and short-circuit protection functions.
[0014] As a further preferred embodiment of the present invention, the optocoupler is MOCD213 and the power electronic switch is BTS462TATMA1.
[0015] In summary, the beneficial effects of the above-described technical solutions conceived by this invention compared with the prior art include: (1) The general control module of the present invention includes a Loongson 2K0300 processor, a DDR4 memory bus, a CAN bus interface, a network PHY chip, an Ethernet interface, an Ethercat slave interface, an Ethercat controller, a network transformer, an RS232 transceiver, a transceiver LTM2881, and an LCD display interface. The Loongson 2K0300 processor includes a memory controller, a CAN controller, an Ethernet controller, and a UART controller. The memory controller is connected to the DDR4 memory bus for connecting to memory. The CAN controller is connected to the CAN bus interface for transmitting signals to and receiving signals from the CAN bus. The Ethernet controller is connected to the network PHY chip, and the network PHY chip is connected to the Ethernet interface for implementing adaptive gigabit Ethernet. The Loongson 2K0300 processor, the Ethercat controller, the network transformer, and the Ethercat slave interface are connected in sequence to connect a single module or one or more slaves of multiple Ethercat devices to form a control network. The UART controller is connected to the RS232 transceiver for connecting external devices. The UART controller is connected to the LTM2881 transceiver via UART1 and 2 pins. The LTM2881 transceiver has RS422 / RS485 interfaces for implementing RS485 / 422 serial bus interfaces. The LCD display interface is used to output video signals. The general-purpose control module provided by this invention can not only perform corresponding functions as a subsystem in relatively complex integrated control systems, but also independently achieve the goal of integrated system control in small and medium-sized control systems, achieving a balance between cost and power consumption, and offering high efficiency and ease of use.
[0016] (2) The universal control module of the present invention has a compact structure, wide applicability, and is easy to use. By covering a variety of interfaces required for industrial control and using the Loongson 2K0300 processor, the control module can not only realize the function of a single subsystem in a relatively complex integrated control system, but also independently achieve the goal of integrated system control in small and medium-sized control systems, achieving a balance between cost and power consumption, and a high efficiency-cost ratio that is simple and easy to use. At the same time, through the various interfaces and controllers in the control module, and combined with the Linux-based open source ecosystem, the universal control module can be extended with different software. Furthermore, through standardized interfaces and software tools, the usage threshold of the universal control module can be significantly reduced, thereby enabling the module to provide functions close to those of a high-end PLC at a moderate cost, while maintaining low power consumption and ease of use, and ensuring the security of the universal control module. It has good prospects for promotion and application value. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the general control module structure in an embodiment of the present invention; Detailed Implementation To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.
[0018] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.
[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0020] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0021] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.
[0022] Example: Please see Figure 1 The general control module in the preferred embodiment of the present invention can not only perform corresponding functions as a subsystem in a relatively complex integrated control system, but also independently achieve the goal of integrated system control in small and medium-sized control systems, achieving a balance between cost and power consumption, and a high efficiency ratio that is simple and easy to use.
[0023] Specifically, such as Figure 1 As shown in the preferred embodiment of this application, the general control module includes a Loongson 2K0300 processor, a DDR4 memory bus, a CAN bus interface, an Ethernet PHY chip, an Ethernet interface, an Ethercat slave interface, an Ethercat controller, a network transformer, an RS232 transceiver, a transceiver LTM2881, and an LCD display interface.
[0024] The Loongson 2K0300 processor includes a memory controller, a CAN controller, an Ethernet controller, and a UART controller. The memory controller connects to the DDR4 memory bus and is used to connect to the memory.
[0025] Preferably, the memory consists of two Loongson DDR4 chips LS6D4323, achieving a total capacity of 1GB of DDR4 memory with a speed of 1600Mbps.
[0026] Furthermore, the CAN controller is connected to the CAN bus interface to transmit signals to and receive signals from the CAN bus.
[0027] Furthermore, the Ethernet controller is connected to the network PHY chip, which in turn is connected to the Ethernet interface to implement adaptive Gigabit Ethernet. Preferably, the Ethernet PHY chip is 88E1111HV.
[0028] More preferably, the Loongson 2K0300 processor, Ethercat controller, network transformer, and Ethercat slave interface are sequentially connected to connect a single module or one or more Ethercat slaves to form a control network. Preferably, the control network is used in Twincat engineering system applications.
[0029] Furthermore, the UART controller is connected to an RS232 transceiver for communicating with external devices. Preferably, the external devices are PLCs, touch screens, instruments, etc.
[0030] Furthermore, the UART controller is connected to the transceiver LTM2881 via UART1 and 2 pins, and the transceiver LTM2881 is equipped with an RS422 / RS485 interface to implement an RS485 / 422 serial bus interface.
[0031] Furthermore, the LTM2881 transceiver is configured to select either RS485 or RS422 interface via software to enable or disable the transmit and receive functions on the LTM2881 transceiver, with a maximum transmission rate of 2Mbps.
[0032] Furthermore, the LCD display interface is used to output video signals.
[0033] Furthermore, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes a JTAG interface. The Loongson 2K0300 processor is connected to the JTAG interface, and the JTAG interface is brought out using a pin header for processor debugging, hardware debugging, and software debugging.
[0034] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes a BIOS, and the Loongson 2K0300 is connected to the BIOS via SPI0 for booting the Loongson 2K0300 processor. Preferably, the BIOS is an SPI FLASH.
[0035] More in detail, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes an RTC battery. The Loongson 2K0300 processor includes a built-in RTC, and the RTC battery is electrically connected to the built-in RTC to provide basic time functions, alarm and timing functions, and system management functions.
[0036] Furthermore, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes a USB interface, which is electrically connected to the Loongson 2K0300 processor. The USB interface includes a USB0 interface and a USB1 interface, where the USB0 interface is an OTG interface and the USB1 interface is a host interface.
[0037] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes I. 2 C interface and temperature sensor, I 2 The Type-C interface is electrically connected to both the temperature sensor and the Loongson 2K0300 processor for collecting ambient temperature data. Preferably, the temperature sensor is a TEMP117.
[0038] Furthermore, such as Figure 1 As shown in the preferred embodiment of this application, the Loongson 2K0300 processor includes a 4-bit SDIO0 interface. The 4-bit SDIO0 interface uses eMMC mode and is connected to an eMMC chip for expanding hard disk storage.
[0039] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the Loongson 2K0300 processor includes a 4-bit SDIO1 interface, which is connected to a TF card slot to select different micro SD cards according to actual needs to achieve data storage.
[0040] More in detail, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes a driver chip, an SPI3 interface, a full-bridge driver circuit, and a current sensor.
[0041] The PWM output port of the Loongson 2K0300 processor is connected to the SPI3 interface to the driver chip. The driver chip drives the full-bridge drive circuit and is connected to the current sensor to collect the phase current for closed-loop control of the brushless DC motor.
[0042] Preferably, the full-bridge drive circuit consists of 6 nMOS transistors and two current sensors.
[0043] More preferably, the nMOS transistor is NTMFS6H801NLT1G, and the current sensor is AD8418AWBRMZ.
[0044] Furthermore, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes an AD conversion chip, a front-end processing circuit, and a sampling resistor. An SPI2 interface is provided between the Loongson 2K0300 processor and the AD conversion chip. The input terminal of the AD conversion chip is connected to the output terminal of the front-end processing circuit for acquiring voltage signals; the output terminal of the sampling resistor is connected to the input terminal of the front-end processing circuit for processing the voltage signals; the sampling resistor is used to convert eight channels of 4~20mA current signals into 0.4V~2.00V voltage signals.
[0045] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the AD conversion chip is ADS8688, the sampling resistor is a 100Ω sampling resistor, and the front-end processing circuit includes an operational amplifier AD8512, an isolation operational amplifier ISO224, and an operational amplifier AD8512 connected in sequence.
[0046] Furthermore, such as Figure 1As shown in the preferred embodiment of this application, the Loongson 2K0300 processor includes 8 ADC channels. ADC1-ADC4 are connected to the output of operational amplifier AD8512, the output of a voltage divider network is connected to the input of operational amplifier AD8512, and the input of the voltage divider network is used to acquire four 20V-30V voltage signals. ADC5-ADC8 are connected to the output of operational amplifier AD8512, and the output of a current sensor is connected to the input of operational amplifier AD8512. The input of the current sensor is used to acquire four 4-20mA current signals.
[0047] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the Loongson 2K0300 processor includes an 8-channel GPIO interface, which is connected to an optocoupler for acquiring 8 channels of passive switching signals.
[0048] Furthermore, such as Figure 1 As shown in the preferred embodiment of this application, the general control module further includes a level converter and a power electronic switch. The Loongson 2K0300 processor is connected to the level converter through an 8-channel GPIO interface. The output terminal of the level converter is connected to the input terminal of the optocoupler, and the output terminal of the optocoupler is connected to the input terminal of the power electronic switch. The power electronic switch is controlled by 8 channels of 24V@3A switching output signals, and the output circuit has freewheeling and short-circuit protection functions.
[0049] More preferably, such as Figure 1 As shown in the preferred embodiment of this application, the optocoupler is MOCD213 and the power electronic switch is BTS462TATMA1.
[0050] Furthermore, in a preferred embodiment of this application, the general-purpose control module uses industrial-grade components, and its operating environment temperature is -40℃ to 70℃.
[0051] More preferably, in the preferred embodiment of this application, the rated operating voltage of the general control module is 24V, and the power consumption is no more than 15W at all temperatures.
[0052] More specifically, in the preferred embodiment of this application, the general control module is a single rectangular printed circuit board with structural dimensions of 240mm in length, 180mm in width, and 25mm in height.
[0053] Furthermore, in a preferred embodiment of this application, the general control module includes separate external interfaces corresponding to power supply and signal, and the external interfaces are connected to corresponding electrical connectors. Preferably, the electrical connectors are J30J series micro rectangular connectors, used to separate the transmission of power supply and signal.
[0054] Furthermore, in a preferred embodiment of this application, the general control module adopts the OpenWrt operating system.
[0055] The general-purpose control module in the preferred embodiment of this invention has a compact structure, wide applicability, and ease of use. By covering multiple interfaces required for industrial control and incorporating the Loongson 2K0300 processor, this control module not only enables the functionality of a single subsystem in complex integrated control systems but also allows for independent system-wide control in small and medium-sized control systems, achieving a balance between cost and power consumption, and offering high efficiency and cost-effectiveness through ease of use. Furthermore, the various interfaces and controllers within the control module, combined with the Linux-based open-source ecosystem, allow for the expansion of different software. Standardized interfaces and software tools significantly lower the barrier to entry for using the general-purpose control module, enabling it to provide near-high-end PLC functionality at a moderate cost while maintaining low power consumption, ease of use, and security. This makes it a promising candidate for widespread adoption and significant application value.
[0056] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A universal control module, characterized by, The Loongson 2K0300 processor, a DDR4 memory bus, a CAN bus interface, a network PHY chip, an Ethernet interface, an Ethercat slave interface, an Ethercat controller, a network transformer, an RS232 transceiver, a transceiver LTM2881, and an LCD display interface are included. The Loongson 2K0300 processor includes a memory controller, a CAN controller, an Ethernet controller, and a UART controller. The memory controller is connected to the DDR4 memory bus for connecting memory. The CAN controller is connected to the CAN bus interface for transmitting signals to the CAN bus and receiving signals in the CAN bus. The Ethernet controller is connected to the network PHY chip, and the network PHY chip is connected to the Ethernet interface for realizing adaptive gigabit Ethernet. The Loongson 2K0300 processor, the Ethercat controller, the network transformer, and the Ethercat slave interface are sequentially connected for connecting a single module, one or more slaves of multiple Ethercats, and building a control network. The UART controller is connected to the RS232 transceiver for connecting external devices. The UART controller is connected to the transceiver LTM2881 through UART1 and UART2 pins, and the transceiver LTM2881 is provided with an RS422 / RS485 interface for realizing an RS485 / 422 serial bus interface. The LCD display interface is used for outputting video signals.
2. The universal control module of claim 1, wherein, A JTAG interface and a BIOS are further included. The Loongson 2K0300 processor is connected to the JTAG interface, and the JTAG interface is led out in the form of a row of pins for processor debugging, hardware debugging, and software debugging. The Loongson 2K0300 processor is connected to the BIOS through SPI0 for starting the Loongson 2K0300 processor.
3. The universal control module of claim 1, wherein, Also included are RTC battery, USB interface, I 2 C interface and temperature sensor; The Loongson 2K0300 processor includes a built-in RTC, and the RTC battery is electrically connected to the built-in RTC for providing time base functions, alarm and timing functions, and system management functions. The USB interface is electrically connected to the Loongson 2K0300 processor, and the USB interface includes a USB0 interface and a USB1 interface. The I 2 The C interface is electrically connected with the temperature sensor and the Loongson 2K0300 processor respectively, and is used for collecting ambient temperature.
4. The universal control module of claim 1, wherein, The Loongson 2K0300 processor includes a 4-bit SDIO0 interface and a 4-bit SDIO1 interface. The 4-bit SDIO0 interface uses an eMMC mode, and the 4-bit SDIO0 interface is connected to an eMMC chip for expanding hard disk storage. The 4-bit SDIO1 interface is connected to a TF card seat for selecting different micro SD cards according to actual needs to realize data storage.
5. The universal control module of any one of claims 1-4, wherein, A drive chip, an SPI3 interface, a full-bridge drive circuit, and a current sensor are further included. The PWM output port of the Loongson 2K0300 processor is connected with a driving chip of an SPI3 interface, the driving chip drives the full-bridge driving circuit, and is connected with the current sensor to collect phase current, for realizing closed-loop control of the direct-current brushless motor.
6. The universal control module of any one of claims 1-4, wherein, An AD conversion chip, a front-end processing circuit and a sampling resistor are further included. An SPI2 is arranged between the Loongson 2K0300 processor and the AD conversion chip. An input end of the AD conversion chip is connected with an output end of the front-end processing circuit, for collecting a voltage signal; an output end of the sampling resistor is connected with an input end of the front-end processing circuit, for processing the voltage signal; and the sampling resistor is used for converting 8-way 4-20mA current signals into 0.4V-2.00V voltage signals.
7. The universal control module of any one of claims 1-4, wherein, The Loongson 2K0300 processor includes 8-way ADC channels, wherein ADC1-ADC4 are connected with an output end of an operational amplifier AD8512, an output end of a voltage dividing resistor network is connected with an input end of the operational amplifier AD8512, and an input end of the voltage dividing resistor network is used for collecting 4-way 20V-30V voltage signals; ADC5-ADC8 are connected with an output end of the operational amplifier AD8512, an output end of a current sensor is connected with an input end of the operational amplifier AD8512, and an input end of the current sensor is used for collecting 4-way 4-20mA current signals.
8. The universal control module of any one of claims 1-4, wherein, The Loongson 2K0300 processor includes 8-way GPIO interfaces, the 8-way GPIO interfaces are connected with optocouplers, and are used for collecting 8-way passive switching values.
9. The universal control module of claim 8, wherein, A level converter and a power electronic switch are further included, the Loongson 2K0300 processor is connected with the level converter through the 8-way GPIO interfaces, an output end of the level converter is connected with an input end of the optocoupler, an output end of the optocoupler is connected with an input end of the power electronic switch, the power electronic switch is controlled through 8-way 24V@3A switching value output signals, and the output circuit has a freewheeling and short-circuit protection function.
10. The universal control module of claim 9, wherein, The optocoupler is MOCD213, and the power electronic switch is BTS462TATMA1.