Localized CAN communication device capable of realizing conversion and expansion of various signals

Abstract

The utility model relates to a localized CAN (Controller Area Network) communication device capable of realizing conversion and expansion of various signals, which comprises a CAN communication module used for data processing and external communication; the switching value input module is used for receiving a switching value signal; the analog quantity input module is used for collecting analog quantity signals; and the bus processing module is used for performing CAN communication connection on the CAN communication module, the switching value input module and the analog quantity input module. According to hardware design, each communication interface carries out analysis, forwarding and the like through a main control chip KF32A152MQV, conversion of various signals is achieved, the integration degree is high, the autonomous controllable degree is greatly improved, and the requirements of various industries are effectively met.

Description

Technical Field

[0001] The utility model relates to CAN communication design, in particular to a CAN communication device capable of realizing multiple signal conversion and expansion. Technical Background

[0002] In systems based on CAN communication, the main problems in CAN external communication design are as follows: 1) The signal conversion based on CAN communication is relatively simple and the integration is not high; 2) The design based on CAN integrated communication has a low degree of autonomy and controllability. Utility Model Content

[0003] In view of this, the utility model provides a domestically produced CAN communication device that can realize multiple signal conversion and expansion. In the hardware design, each communication interface is parsed and forwarded through the main control chip KF32A152MQV, realizing multiple signal conversions, with high integration, greatly improving the degree of independent control, and effectively meeting the needs of various industries.

[0004] The specific technical solutions are as follows:

[0005] A domestically produced CAN communication device capable of realizing multiple signal conversion and expansion includes a CAN communication module for data processing and external communication; a switch input module for receiving switch signals; an analog input module for collecting analog signals; and a bus processing module for connecting the CAN communication module, the switch input module, and the analog input module for CAN communication.

[0006] Furthermore, the data processing of the CAN communication module includes mutual conversion between the CAN protocol and the RS485 protocol.

[0007] Furthermore, the switch input module has a photoelectric isolation circuit.

[0008] Furthermore, the analog input module uses the CL1606 chip.

[0009] Furthermore, the analog input module has an isolation circuit.

[0010] Furthermore, the CAN communication module and the bus processing module are implemented by the KF32A152 microcontroller.

[0011] Beneficial effects

[0012] A domestically produced CAN communication design that can realize multiple signal conversion and expansion can achieve the following beneficial results:

[0013] 1) Mainly used for signal acquisition of switching and analog quantities, processing and calculation of data, and finally communicating with external devices through rich CAN and RS-485 interfaces, with multiple signal conversions and high integration

[0014] 2) The use of domestic components has greatly improved the degree of independent control.

[0015] 3) The utility model is easy to use and effectively meets the needs of various industries. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 KF32A152 MCU functional logic block diagram

[0017] Figure 2 Schematic diagram of multiple signal conversion based on CAN communication design for this utility model

[0018] Figure 3 This is the circuit principle block diagram of this utility model DETAILED DESCRIPTION

[0019] A domestically produced CAN communication device capable of performing multiple signal conversion and expansion includes: a) a CAN communication module for data processing and external communication; b) a switch input module for processing 32-channel switch input signals, having a photoelectric isolation function, and outputting signals externally through the CAN communication module; c) an analog input module using a domestically produced ARM general-purpose microcontroller as the core processing unit, capable of processing 16-channel analog input signals, having an isolation circuit, and outputting signals externally through the CAN communication module; and d) a bus processing module for connecting the above three modules for CAN communication.

[0020] Analog and switch cards communicate via CAN and can also convert control commands into analog or digital signal outputs;

[0021] The CAN module uses the core interconnect CL1606 chip for analog quantity acquisition; the analog quantity and switch quantity use domestic ARM general-purpose microcontrollers as the core processing units, which can process analog quantity and switch quantity input signals and output signals to the outside through the CAN communication interface;

[0022] The present invention will be described in detail below with reference to the accompanying drawings.

[0023] This embodiment provides a localized CAN communication design implementation solution that can realize multiple signal conversion and expansion. The solution includes the following contents:

[0024] like Figure 1As shown, the CAN module uses the core interconnect CL1606 chip for analog data acquisition. This chip features a second-order anti-aliasing filter, a track-and-hold amplifier, a 16-bit charge redistribution successive approximation analog-to-digital converter (ADC), and flexible digital filters. Data processing and external communication are primarily implemented using the KF32A152 microcontroller, a microcontroller developed based on the KF32 core architecture. The KF32 is a high-performance processor core with a 32-bit three-stage pipeline and an efficient mixed 16-bit / 32-bit instruction set, enabling efficient data processing and boasting a rich set of on-chip communication peripherals. Each communication interface is parsed and forwarded by the master control chip, the KF32A152MQV. The CANCM V1.0 program, based on the KF32A152MQV platform, provides operation functions for seven CAN channels and two RS485 channels, as well as CAN fault diagnosis functions. Data transmission and reception for the seven CAN channels and two RS485 channels is handled via interrupts, rather than status queries.

[0025] like Figure 2 As shown in the figure, analog quantity and switch quantity respectively use domestic ARM general-purpose microcontrollers as core processing units, which can process analog quantity and switch quantity input signals, output signals to the outside through the CAN communication interface, and collect signals from sensors and actuators (including digital signals, analog signals, etc.) and output them.

Claims

1. A domestically produced CAN communication device capable of realizing multiple signal conversion and expansion, characterized by: Includes CAN communication module for data processing and external communication; Switching quantity input module, used for receiving switching quantity signals; Analog input module, used to collect analog signals; The bus processing module is used to connect the CAN communication module, the switch input module and the analog input module for CAN communication.

2. The domestically produced CAN communication device capable of realizing multiple signal conversion and expansion according to claim 1, characterized in that: The data processing of the CAN communication module includes the mutual conversion between the CAN protocol and the RS485 protocol.

3. The domestically produced CAN communication device capable of realizing multiple signal conversion and expansion according to claim 1, characterized in that: The switch input module has a photoelectric isolation circuit.

4. The domestically produced CAN communication device capable of realizing multiple signal conversion and expansion according to claim 1, characterized in that: The analog input module uses the CL1606 chip.

5. The domestically produced CAN communication device capable of realizing multiple signal conversion and expansion according to claim 1, characterized in that: The analog input module has an isolation circuit.

6. A domestically produced CAN communication device capable of realizing multiple signal conversion and expansion according to any one of claims 1 to 5, characterized in that: The CAN communication module and bus processing module are implemented by the KF32A152 microcontroller.

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