A comprehensive interface circuit for shunting protection

Abstract

This application discloses a comprehensive interface circuit for shunting protection, including a main control unit, a printer driver unit, a 485 communication unit, and a CAN communication unit. The printer driver unit includes an RS232 debugging subunit and an RS232 driver subunit connecting the main control unit and the printer. The 485 communication unit includes a first 485 transceiver subunit connecting the main control unit to the RS485 bus and a second 485 transceiver subunit connecting the main control unit to at least one CIR interface and a TAX interface. The CAN communication unit includes a first CAN transceiver subunit connecting the main control unit to the CAN bus and a second CAN transceiver subunit connecting the main control unit to the CAN interface. By configuring the printer driver unit, the 485 communication unit, and the CAN communication unit, and by specifically designing the connection method, the circuit realizes the functions of CIR, TAX, CAN, and printing, thus comprehensively implementing shunting protection functions.

Description

Technical Field

[0001] This application relates to the field of train control technology, and in particular to a shunting protection integrated interface circuit. Background Technology

[0002] Currently, the integrated interface circuit for shunting protection used in shunting auxiliary protection devices is generally based on the x86 architecture WinXP system. It mainly has functions such as 4G dial-up Internet access, positioning information processing, communication with other boards, and communication with the back-end system. It is an important component of shunting auxiliary protection devices.

[0003] There are currently various integrated interface circuits for shunting protection. Due to the different configurations of chips, architectures, and plug-ins, the products have inconsistent functions and poor compatibility. In particular, for circuit boards with special communication structures, it is impossible to achieve universality between products, and maintenance is also inconvenient. Summary of the Invention

[0004] This application provides a shunting protection integrated interface circuit to solve the problem of poor compatibility of shunting protection integrated interface circuits.

[0005] To achieve the above objectives, in one embodiment, a shunting protection integrated interface circuit is provided, comprising: a main control unit, a printer driver unit, a 485 communication unit, and a CAN communication unit;

[0006] The print drive unit includes an RS232 debugging subunit and an RS232 driver subunit. The RS232 debugging subunit and the RS232 driver subunit are respectively connected to the main control unit. The other end of the RS232 driver subunit is used to connect to the printer.

[0007] The 485 communication unit includes a first 485 transceiver subunit and a second 485 transceiver subunit. One end of the first 485 transceiver subunit is used to connect to the RS485 bus and the other end is connected to the main control unit. One end of the second 485 transceiver subunit is connected to the main control unit and the other end is isolated to at least one CIR interface and one TAX interface.

[0008] The CAN communication unit includes a first CAN transceiver subunit and a second CAN transceiver subunit. One end of the first CAN transceiver subunit is connected to the CAN bus, and the other end is connected to the main control unit. One end of the second CAN transceiver subunit is connected to the main control unit, and the other end is connected to at least one CAN interface through isolation.

[0009] In one embodiment, it further includes: an Ethernet unit and an Ethernet switch unit, one end of the Ethernet unit being connected to the main control unit, and the other end of the Ethernet unit being connected to the Ethernet switch unit.

[0010] In one embodiment, the Ethernet unit includes a first Ethernet sub-unit, and the Ethernet switch unit includes a first input terminal, a first output terminal, and a second output terminal;

[0011] The first Ethernet subunit includes an RC output branch connected to the first input terminal. The first output terminal is isolated and connected to a first ETH interface. The second output terminal is isolated and connected to a second ETH interface. The first input terminal is connected to the first output terminal and the second output terminal respectively. A 0-ohm resistor is connected in parallel on the connection line between the first output terminal and the second output terminal.

[0012] In one embodiment, the Ethernet unit further includes a second Ethernet subunit, the second Ethernet subunit including a capacitor output branch and a resistor output branch, and the Ethernet switch unit further includes a second input terminal, a third input terminal and a third output terminal, the capacitor output branch being connected to the second input terminal, the resistor output branch being connected to the third input terminal, and the third output terminal being isolated and connected to a third ETH interface.

[0013] In one embodiment, the first CAN transceiver subunit includes a first CAN line and a second CAN line, each CAN line being connected to the main control unit and the CAN bus, and both the first CAN line and the second CAN line using the MCP25625T-E / ML chip;

[0014] The second CAN transceiver subunit includes a third CAN line and a fourth CAN line. The third CAN line connects the main control unit to a CAN interface, and the fourth CAN line connects the main control unit to another CAN interface. Both the third and fourth CAN lines use the ADM3053BRWZ chip.

[0015] In one embodiment, the first 485 transceiver subunit includes a MAX13488EESA+ chip circuit. The RO port and DI port of the MAX13488EESA+ chip circuit are respectively connected to the first 485 receiver and the first 485 transmitter of the main control unit. The positive and negative lines of the MAX13488EESA+ chip circuit are connected to the RS485 bus.

[0016] In one embodiment, the second 485 transceiver subunit includes a first 485 line, a second 485 line, and a third 485 line. One end of the first 485 line, the second 485 line, and the third 485 line are all connected to the main control unit, and the other end of the first 485 line, the second 485 line, and the third 485 line are respectively connected to the first CIR interface, the second CIR interface, and the TAX interface.

[0017] The ADM2687EBRIZ chip is used on the first 485 line, the second 485 line and the third 485 line.

[0018] In one embodiment, the main control unit is an STM32F437 chip.

[0019] The aforementioned integrated interface circuit for shunting protection includes a main control unit, a printer driver unit, a 485 communication unit, and a CAN communication unit. The printer driver unit includes an RS232 debugging subunit and an RS232 driver subunit, both connected to the main control unit. The other end of the RS232 driver subunit is used to connect to a printer. The 485 communication unit includes a first 485 transceiver subunit and a second 485 transceiver subunit. One end of the first 485 transceiver subunit is connected to an RS485 bus, and the other end is connected to the main control unit. One end of the second 485 transceiver subunit is connected to the main control unit, and the other end is isolated from at least one CIR interface and one TAX interface. The CAN communication unit includes a first CAN transceiver subunit and a second CAN transceiver subunit. One end of the first CAN transceiver subunit is connected to a CAN bus, and the other end is connected to the main control unit. One end of the second CAN transceiver subunit is connected to the main control unit, and the other end is isolated from at least one CAN interface. By setting up a printing driver unit, a 485 communication unit, and a CAN communication unit, and by designing the specific connection method, the functions of CIR, TAX, CAN, and printing are realized. This circuit structure comprehensively realizes the shunting protection function. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a general block diagram of the shunting protection integrated interface circuit in one embodiment of this application;

[0022] Figure 2 This is a circuit connection diagram of the Ethernet unit in one embodiment of this application;

[0023] Figure 3 This is a circuit connection diagram of an Ethernet switch unit in one embodiment of this application;

[0024] Figure 4 This is a circuit connection diagram of the CAN communication unit in one embodiment of this application;

[0025] Figure 5 This is a circuit connection diagram of the 485 communication unit in one embodiment of this application;

[0026] Figure 6 This is a circuit connection diagram of the printing drive unit in one embodiment of this application. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be understood that the invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, for clarity, the dimensions and relative dimensions of layers and regions may be exaggerated. The same reference numerals denote the same elements throughout.

[0029] It should be understood that when an element or layer is referred to as "on," "adjacent to," "connected to," or "coupled to" other elements or layers, it may be directly on, adjacent to, connected to, or coupled to other elements or layers, or there may be intervening elements or layers. Conversely, when an element is referred to as "directly on," "directly adjacent to," "directly connected to," or "directly coupled to" other elements or layers, there are no intervening elements or layers. It should be understood that although the terms first, second, third, etc., may be used to describe various elements, components, areas, layers, and / or portions, these elements, components, areas, layers, and / or portions should not be limited by these terms. These terms are only used to distinguish one element, component, area, layer, or portion from another element, component, area, layer, or portion. Therefore, without departing from the teachings of this invention, the first element, component, area, layer, or portion discussed below may be referred to as the second element, component, area, layer, or portion.

[0030] Spatial relation terms such as “below,” “under,” “below,” “under,” “above,” “above,” etc., are used herein for convenience of description to describe the relationship between one element or feature shown in the figure and other elements or features. It should be understood that, in addition to the orientation shown in the figure, spatial relation terms are intended to also include different orientations of the device in use and operation. For example, if the device in the figure is flipped, then the element or feature described as “below,” “under,” or “below” other elements or features will be oriented “above” other elements or features. Therefore, the exemplary terms “below” and “under” can include both above and below orientations. The device may be otherwise oriented (rotated 90 degrees or otherwise) and the spatial descriptive terms used herein will be interpreted accordingly.

[0031] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0032] To fully understand this invention, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this invention. Preferred embodiments of the invention are described in detail below; however, in addition to these detailed descriptions, the invention may have other embodiments.

[0033] In one embodiment, such as Figure 1The diagram shown is an overall block diagram of a shunting protection integrated interface circuit provided in this application. This integrated interface circuit for shunting protection includes: a main control unit, a printer driver unit, a 485 communication unit, and a CAN communication unit. The printer driver unit includes an RS232 debugging subunit and an RS232 driver subunit, both connected to the main control unit. The other end of the RS232 driver subunit is used to connect to a printer. The 485 communication unit includes a first 485 transceiver subunit and a second 485 transceiver subunit. One end of the first 485 transceiver subunit is connected to an RS485 bus, and the other end is connected to the main control unit. One end of the second 485 transceiver subunit is connected to the main control unit, and the other end is isolated from at least one CIR interface and one TAX interface. The CAN communication unit includes a first CAN transceiver subunit and a second CAN transceiver subunit. One end of the first CAN transceiver subunit is connected to a CAN bus, and the other end is connected to the main control unit. One end of the second CAN transceiver subunit is connected to the main control unit, and the other end is isolated from at least one CAN interface.

[0034] Among them, the Cab Integrated Radio (CIR) can communicate with the locomotive through this CIR interface, and the Comprehensive Supervisor for Locomotive Safety Information (TSI) can communicate with the locomotive through this TAX interface.

[0035] In one embodiment, the main control unit is an STM32F437 chip.

[0036] like Figure 2 and 3 The diagram shown is a circuit connection diagram of the Ethernet unit and the Ethernet switch unit provided in this application. In one embodiment, it further includes an Ethernet unit and an Ethernet switch unit, wherein one end of the Ethernet unit is connected to the main control unit and the other end of the Ethernet unit is connected to the Ethernet switch unit.

[0037] In one embodiment, the Ethernet unit includes a first Ethernet sub-unit, and the Ethernet switch unit includes a first input terminal, a first output terminal, and a second output terminal;

[0038] The first Ethernet subunit includes an RC output branch connected to the first input terminal. The first output terminal is isolated and connected to a first ETH interface. The second output terminal is isolated and connected to a second ETH interface. The first input terminal is connected to the first output terminal and the second output terminal respectively. A 0-ohm resistor is connected in parallel on the connection line between the first output terminal and the second output terminal.

[0039] In one embodiment, the Ethernet unit further includes a second Ethernet subunit, the second Ethernet subunit including a capacitor output branch and a resistor output branch, and the Ethernet switch unit further includes a second input terminal, a third input terminal and a third output terminal, the capacitor output branch being connected to the second input terminal, the resistor output branch being connected to the third input terminal, and the third output terminal being isolated and connected to a third ETH interface.

[0040] like Figure 4 The diagram shown is a circuit connection diagram of the CAN communication unit provided in this application. In one embodiment, the first CAN transceiver subunit includes a first CAN line and a second CAN line. Each CAN line is connected to the main control unit and the CAN bus. Both the first CAN line and the second CAN line use the MCP25625T-E / ML chip.

[0041] The second CAN transceiver subunit includes a third CAN line and a fourth CAN line. The third CAN line connects the main control unit to a CAN interface, and the fourth CAN line connects the main control unit to another CAN interface. Both the third and fourth CAN lines use the ADM3053BRWZ chip.

[0042] like Figure 5 The diagram shown is a circuit connection diagram of the 485 communication unit provided in this application. In one embodiment, the first 485 transceiver subunit includes a MAX13488EESA+ chip circuit. The RO port and DI port of the MAX13488EESA+ chip circuit are respectively connected to the first 485 receiving end and the first 485 transmitting end of the main control unit. The positive and negative lines of the MAX13488EESA+ chip circuit are connected to the RS485 bus.

[0043] In one embodiment, the second 485 transceiver subunit includes a first 485 line, a second 485 line, and a third 485 line. One end of the first 485 line, the second 485 line, and the third 485 line are all connected to the main control unit, and the other end of the first 485 line, the second 485 line, and the third 485 line are respectively connected to the first CIR interface, the second CIR interface, and the TAX interface.

[0044] The ADM2687EBRIZ chip is used on the first 485 line, the second 485 line and the third 485 line.

[0045] like Figure 6 The diagram shown is a circuit connection diagram of the print driver unit provided in this application, in which the chip and connection lines are configured to realize the functions of debugging and print driving.

[0046] The above-described embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.

Claims

1. A shunting protection integrated interface circuit, characterized in that, include: Main control unit, printer driver unit, 485 communication unit and CAN communication unit; The print drive unit includes an RS232 debugging subunit and an RS232 driver subunit. The RS232 debugging subunit and the RS232 driver subunit are respectively connected to the main control unit. The other end of the RS232 driver subunit is used to connect to the printer. The 485 communication unit includes a first 485 transceiver subunit and a second 485 transceiver subunit. One end of the first 485 transceiver subunit is used to connect to the RS485 bus and the other end is connected to the main control unit. One end of the second 485 transceiver subunit is connected to the main control unit and the other end is isolated to at least one CIR interface and one TAX interface. The CAN communication unit includes a first CAN transceiver subunit and a second CAN transceiver subunit. One end of the first CAN transceiver subunit is connected to the CAN bus, and the other end is connected to the main control unit. One end of the second CAN transceiver subunit is connected to the main control unit, and the other end is connected to at least one CAN interface through isolation.

2. The shunting protection integrated interface circuit according to claim 1, characterized in that, Also includes: The system includes an Ethernet unit and an Ethernet switch unit, wherein one end of the Ethernet unit is connected to the main control unit and the other end of the Ethernet unit is connected to the Ethernet switch unit.

3. The shunting protection integrated interface circuit according to claim 2, characterized in that, The Ethernet unit includes a first Ethernet subunit, and the Ethernet switch unit includes a first input terminal, a first output terminal, and a second output terminal. The first Ethernet subunit includes an RC output branch connected to the first input terminal. The first output terminal is isolated and connected to a first ETH interface. The second output terminal is isolated and connected to a second ETH interface. The first input terminal is connected to the first output terminal and the second output terminal respectively. A 0-ohm resistor is connected in parallel on the connection line between the first output terminal and the second output terminal.

4. The shunting protection integrated interface circuit according to claim 3, characterized in that, The Ethernet unit further includes a second Ethernet subunit, which includes a capacitor output branch and a resistor output branch. The Ethernet switch unit further includes a second input terminal, a third input terminal, and a third output terminal. The capacitor output branch is connected to the second input terminal, the resistor output branch is connected to the third input terminal, and the third output terminal is isolated and connected to a third ETH interface.

5. The shunting protection integrated interface circuit according to claim 1, characterized in that, The first CAN transceiver subunit includes a first CAN line and a second CAN line. Each CAN line is connected to the main control unit and the CAN bus. Both the first CAN line and the second CAN line use the MCP25625T-E / ML chip. The second CAN transceiver subunit includes a third CAN line and a fourth CAN line. The third CAN line connects the main control unit to a CAN interface, and the fourth CAN line connects the main control unit to another CAN interface. Both the third and fourth CAN lines use the ADM3053BRWZ chip.

6. The shunting protection integrated interface circuit according to claim 1, characterized in that, The first 485 transceiver subunit includes a MAX13488EESA+ chip circuit. The RO port and DI port of the MAX13488EESA+ chip circuit are respectively connected to the first 485 receiver and the first 485 transmitter of the main control unit. The positive and negative lines of the MAX13488EESA+ chip circuit are connected to the RS485 bus.

7. The shunting protection integrated interface circuit according to claim 1, characterized in that, The second 485 transceiver subunit includes a first 485 line, a second 485 line, and a third 485 line. One end of the first 485 line, the second 485 line, and the third 485 line are all connected to the main control unit, and the other end of the first 485 line, the second 485 line, and the third 485 line are respectively connected to the first CIR interface, the second CIR interface, and the TAX interface. The ADM2687EBRIZ chip is used on the first 485 line, the second 485 line and the third 485 line.

8. The shunting protection integrated interface circuit according to any one of claims 1 to 7, characterized in that, The main control unit is an STM32F437 chip.

Images