Backboard capable of being flexibly configured and suitable for safety automatic device and safety automatic device

Abstract

The invention discloses a back plate capable of being flexibly configured and suitable for a safety automatic device and the safety automatic device, the back plate comprises a back plate body, an information interaction unit and n slots are arranged on the back plate body, and the n slots are used for randomly connecting n function board cards in the safety automatic device; the information interaction unit is internally provided with n communication channels, the same position of each slot is provided with an interface, and the n communication channels are connected with the interfaces in the n slots in a one-to-one correspondence manner; a data packet from the function board card is sent to the information interaction unit through a corresponding communication channel, and the information interaction unit judges the type of the data packet and then sends the data packet to the other one or more function board cards through the other one or more communication channels according to a judgment result. According to the invention, the problem that the position of each functional board card in the case of the traditional automatic safety device is fixed can be effectively solved, the flexible configuration of each functional board card in the case of the automatic safety device is realized, and the adaptability of multi-scene application requirements of the automatic safety device is improved.

Description

Technical Field

[0001] The invention relates to the field of electric power automation, and in particular to a flexibly configurable backplane suitable for a safety automatic device and a safety automatic device. Background Art

[0002] Safety automatic devices are a general term for various automatic devices used to prevent the destruction of power system stability, prevent the expansion of power system accidents, prevent power grid collapse and large-scale power outages, and restore the normal operation of power systems. Its basic hardware is mainly composed of four parts: chassis, power supply, functional board, and backplane. The chassis is the carrier of the safety automatic device, providing protection, fixation, support, etc. for the device; the power supply is used to supply power to the safety automatic device; the functional board is the main body to realize the various functions of the safety automatic device; the backplane provides power supply paths for each functional board and provides channels for information exchange between each functional board.

[0003] As a basic component of the safety automatic device, the backplane should adopt a standardized and flexibly configurable architecture as much as possible to improve the adaptability of the safety automatic device to the multi-scenario application requirements. The positions of the functional boards in the traditional safety automatic device chassis are fixed. In order to realize the different functions of the safety automatic device, there are many backplanes with different connection paths. The existing configurable functional backplanes only support the configuration of some functional boards, and the safety automatic device composed of them cannot adapt to the application requirements of multiple scenarios. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a flexibly configurable backplane and safety automatic device suitable for a safety automatic device, which can effectively solve the problem that the positions of the slots of various functional boards in the chassis of traditional safety automatic devices are fixed or only support arbitrary configuration of some functional boards, and realize the flexible configuration of various functional boards in the chassis of the safety automatic device to meet the needs of multi-scenario applications of the safety automatic device.

[0005] Technical solution: A flexibly configurable backplane for a safety automatic device of the present invention comprises a backplane body, on which an information interaction unit and n slots with the same structure are arranged, and the n slots are used to arbitrarily connect n functional boards in the safety automatic device;

[0006] The information interaction unit is internally provided with n communication channels, and an interface is provided at the same position of each of the n slots, and the n communication channels are connected to the interfaces in the n slots in a one-to-one correspondence;

[0007] The data packet from the functional board is sent to the information interaction unit through the corresponding communication channel. After the information interaction unit determines the type of the data packet, it sends the data packet to the remaining one or more functional boards through the remaining one or more communication channels according to the determination result.

[0008] Furthermore, each of the n slots is connected to a function board among the n function boards.

[0009] Furthermore, a plurality of pins are disposed on each of the n slots.

[0010] Furthermore, more than one group of CAN / FDCAN buses are included; the plurality of pins include at least one group of CAN pins, and each group of CAN pins includes CAN_H and CAN_L;

[0011] Each group of CAN / FDCAN buses in the more than one group of CAN / FDCAN buses connects a group of CAN pins at the same position in each of the n slots.

[0012] Furthermore, more than one group of RS485 buses are included; the plurality of pins include at least one group of RS485 pins, and each group of RS485 pins includes RS485_A and RS485_B;

[0013] Each group of RS485 buses in the more than one group of RS485 buses connects a group of RS485 pins at the same position in each of the n slots.

[0014] Furthermore, a power slot is provided on the backplane body for installing a power module;

[0015] Each of the n slots is provided with a plurality of power pins, the layout of the power pins on all the slots is the same, and the power module is connected to all the power pins of the n slots via a power bus.

[0016] Furthermore, a power pin is provided on the information interaction unit, and the power module is connected to the power pin of the information interaction unit via a power bus.

[0017] Furthermore, the information interaction unit includes a clock module, a function configuration module, an information exchange and forwarding module, and a signal enhancement and interference suppression module; the clock module and the function configuration module are respectively connected to the information exchange and forwarding module, and the information exchange and forwarding module is connected to the signal enhancement and interference suppression module through multiple interfaces.

[0018] Furthermore, the signal enhancement and interference suppression module includes a plurality of network transformers of the same model, and each network transformer is connected to an information exchange and forwarding channel in the information exchange and forwarding module.

[0019] Based on the same inventive concept, a safety automatic device of the present invention includes the above-mentioned back plate.

[0020] Beneficial effects: Compared with the prior art, the significant technical effects of the present invention are as follows:

[0021] The n slots of the present invention can be arbitrarily connected to n functional boards in the safety automatic device, and the functional boards can be arbitrarily inserted, which effectively solves the problem that the positions of the functional board slots in the traditional safety automatic device chassis are fixed or only supports the arbitrary configuration of some functional boards, and realizes the flexible configuration of the functional boards in the safety automatic device chassis and the flexible configuration of the safety automatic device functions, meeting the needs of multi-scenario applications of the safety automatic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a flexibly configurable back plate suitable for a safety automatic device of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the information interaction unit in the present invention;

[0024] Figure 3 It is a working principle diagram of the information interaction unit in the present invention;

[0025] Figure 4 A schematic diagram of the connection between the slot and the function board in the present invention;

[0026] Figure 5 It is a connection diagram of the CAN / FDCAN bus and the RS485 bus in the present invention. DETAILED DESCRIPTION

[0027] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. It will be understood by those skilled in the art that the purposes and advantages that can be achieved with the present invention are not limited to the specific description of the above beneficial effects, and the above and other purposes that can be achieved by the present invention will be more clearly understood based on the following detailed description.

[0028] It should be understood by those skilled in the art that the exemplary components, systems and methods described in conjunction with the embodiments disclosed in the present invention can be implemented in hardware, software or a combination of the two. Whether it is implemented in hardware or software depends on the specific application and design of the technical solution. Professional and technical personnel can use different methods to implement the functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0029] Reference to "embodiments" in the present invention means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0030] Example 1

[0031] like Figure 1 As shown, a flexibly configurable backplane suitable for a safety automatic device of the present invention includes a backplane body, on which an information interaction unit and n slots with the same structure are arranged. N communication channels are arranged inside the information interaction unit, and an interface is arranged at the same position of each of the n slots. The n communication channels are connected to the interfaces in the n slots in a one-to-one correspondence to achieve high-speed, high-bandwidth data exchange and forwarding between the functional boards. The n slots are arranged at intervals on the backplane body. The n slots are used to arbitrarily connect n functional boards in the safety automatic device. In this embodiment, each of the n slots is connected to a functional board among the n functional boards. A power supply slot is arranged on the backplane body for installing a power supply module. A number of pins are arranged on each of the n slots.

[0032] like Figure 5 As shown, more than one CAN / FDCAN bus is also provided on the backplane body; the plurality of pins include at least one CAN pin, each CAN pin includes CAN_H and CAN_L; each CAN / FDCAN bus in more than one CAN / FDCAN bus connects a group of CAN pins at the same position in each of the n slots. If one CAN / FDCAN bus is provided on the backplane body, then one slot has two pins, namely CAN_H and CAN_L; if two CAN / FDCAN buses are provided on the backplane, one slot requires four pins, that is, two groups of CAN pins, each group of CAN pins includes one CAN_H and one CAN_L; and so on. The CAN / FDCAN bus is used to provide a CAN / FDCAN communication circuit for each functional board of the safety automatic device, so as to realize real-time communication and long message communication between each functional board. The number of CAN / FDCAN buses is determined by the function of the safety automatic device.

[0033] like Figure 5As shown, more than one set of RS485 buses are also provided on the backplane body; the plurality of pins include at least one set of RS485 pins, and each set of RS485 pins includes RS485_A and RS485_B. Each set of RS485 buses in more than one set of RS485 buses connects a set of RS485 pins at the same position in each of the n slots. If a set of RS485 buses is provided on the backplane body, then one slot has two pins, namely RS485_A and RS485_B; if two sets of RS485 buses are provided on the backplane, one slot requires four pins, that is, two sets of RS485 pins, and each set of RS485 pins includes one RS485_A and RS485_B; and so on. The RS485 bus is used to provide RS485 communication circuits for each functional board of the safety automatic device, so as to realize multi-node data communication between each functional board. The number of RS485 buses is determined by the function of the safety automatic device.

[0034] Each of the n slots is provided with a plurality of power pins, and the layout of the power pins on all slots is the same. The power module is connected to all the power pins of the n slots through a power bus. The power bus is used to provide a power path for the power board and each functional board, thereby supplying power to each functional board. The information exchange unit is provided with power pins, and the power module is connected to the power pins of the information exchange unit through the power bus.

[0035] In this embodiment, the information exchange unit adopts an Ethernet exchange solution and is configured with 16 Ethernet interfaces, which are respectively connected to 16 slots. There are 2 groups of CAN / FDCAN buses and 6 groups of RS485 buses. The power bus is configured as a +5V DC power path.

[0036] like Figure 2 As shown, the information interaction unit includes a clock module, a function configuration module, an information exchange and forwarding module, a signal enhancement and interference suppression module, and a power supply voltage conversion module. The clock module and the function configuration module are respectively connected to the information exchange and forwarding module, and the information exchange and forwarding module is connected to the signal enhancement and interference suppression module through multiple interfaces. Among them, the signal enhancement and interference suppression module includes multiple network transformers of the same model, and each network transformer is connected to an information exchange and forwarding channel in the information exchange and forwarding module.

[0037] In this embodiment, the clock module uses an active crystal oscillator of model OT322525MJBA4SL to provide a clock signal for the information exchange and forwarding module. The function configuration module uses a pull-up and pull-down resistor configuration, and the pull-up or pull-down resistor is welded according to the configured function. The information exchange and forwarding module uses the RTL8316E Ethernet switching chip, which integrates 16 Ethernet interfaces. The signal enhancement and interference suppression module uses 8 network transformers of model 30-51NL, each of which can be connected to 2 information exchange and forwarding channels. The power supply voltage conversion module uses the SCT2230 chip to convert the +5V DC power supply into a +3.3V DC power supply to power the information interaction unit.

[0038] The data packets from the functional board are sent to the information exchange unit through the corresponding communication channel. After the information exchange unit determines the type of the data packet, it sends the data packet to the remaining one or more functional boards through the remaining one or more communication channels according to the determination result. The details are as follows:

[0039] like Figure 3 As shown, the data packet from the functional board is sent to the communication channel 1 of the information interaction unit through interface 1. The information interaction unit will continuously collect information to establish an address table during operation. When the information interaction unit receives a data packet, it will first confirm whether it is a broadcast data packet. If it is, the data packet will be broadcast to all interfaces. If not, the destination address will be queried in the address table to confirm which interface to send the data packet from. When other functional boards are connected, the information interaction unit can inform the other functional boards of the function of the functional board.

[0040] like Figure 4 As shown, the power board of the power module can convert AC or DC +220V into +5V DC power. The power pins in the power module and the slot provide a +5V DC power path for the DC power supply to power the functional board and the information interaction unit.

[0041] The present invention can effectively solve the problem of fixed positions of various functional boards in a traditional safety automatic device chassis, realize flexible configuration of various functional boards in the safety automatic device chassis, and improve the adaptability of the safety automatic device to multi-scenario application requirements.

[0042] Example 2

[0043] A safety automatic device of the present invention includes the backplane described in Example 1. The safety automatic device can effectively solve the problem of fixing the positions of various functional boards in the chassis of a traditional safety automatic device, realize flexible configuration of various functional boards in the chassis of the safety automatic device, and improve the adaptability of the safety automatic device to multi-scenario application requirements.

Claims

1. A flexibly configurable backplane suitable for a safety automatic device, characterized in that: It includes a backplane body, on which an information interaction unit and n slots with the same structure are arranged, and the n slots are used to arbitrarily connect n functional boards in the safety automatic device; The information interaction unit is internally provided with n communication channels, and an interface is provided at the same position of each of the n slots, and the n communication channels are connected to the interfaces in the n slots in a one-to-one correspondence; The data packet from the functional board is sent to the information interaction unit through the corresponding communication channel. After the information interaction unit determines the type of the data packet, it sends the data packet to the remaining one or more functional boards through the remaining one or more communication channels according to the determination result.

2. The flexibly configurable back panel suitable for a safety automatic device according to claim 1, characterized in that: Each of the n slots is connected to a function board among the n function boards.

3. The flexibly configurable back panel suitable for a safety automatic device according to claim 1, characterized in that: A plurality of pins are disposed on each of the n slots.

4. The flexibly configurable back panel suitable for a safety automatic device according to claim 3, characterized in that: It also includes more than one group of CAN / FDCAN buses; the plurality of pins includes at least one group of CAN pins, and each group of CAN pins includes CAN_H and CAN_L; Each group of CAN / FDCAN buses in the more than one group of CAN / FDCAN buses connects a group of CAN pins at the same position in each of the n slots.

5. The flexibly configurable back panel suitable for a safety automatic device according to claim 3, characterized in that: It also includes more than one group of RS485 buses; the plurality of pins include at least one group of RS485 pins, and each group of RS485 pins includes RS485_A and RS485_B; Each group of RS485 buses in the more than one group of RS485 buses connects a group of RS485 pins at the same position in each of the n slots.

6. The flexibly configurable back panel suitable for a safety automatic device according to claim 1, characterized in that: The backplane body is provided with a power slot for installing a power module; A plurality of power pins are arranged in each of the n slots, the layout of the power pins on all the slots is the same, and the power module is connected to all the power pins of the n slots via a power bus.

7. The flexibly configurable back panel suitable for a safety automatic device according to claim 6, characterized in that: The information interaction unit is provided with a power pin, and the power module is connected to the power pin of the information interaction unit via a power bus.

8. The flexibly configurable back panel suitable for a safety automatic device according to claim 1, characterized in that: The information interaction unit includes a clock module, a function configuration module, an information exchange and forwarding module, and a signal enhancement and interference suppression module; the clock module and the function configuration module are respectively connected to the information exchange and forwarding module, and the information exchange and forwarding module is connected to the signal enhancement and interference suppression module through multiple interfaces.

9. The flexibly configurable back panel suitable for a safety automatic device according to claim 8, characterized in that: The signal enhancement and interference suppression module includes a plurality of network transformers of the same model, each of which is connected to an information exchange and forwarding channel in the information exchange and forwarding module.

10. A safety automatic device, characterized in that: A back plate comprising any one of claims 1 to 9.

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