CN211045905U

CN211045905U - Electronic interface equipment with master parallel mode

Info

Publication number: CN211045905U
Application number: CN201922088857.4U
Authority: CN
Inventors: 张健; 黄彦东; 李润雷; 赵一鹏; 王婧; 温情
Original assignee: Shanghai Railway Communication Co Ltd
Current assignee: Shanghai Railway Communication Co Ltd
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-07-17
Anticipated expiration: 2029-11-28

Abstract

The utility model relates to an electronic interface equipment who possesses owner and mode is connected with meter axle equipment and interlocking equipment, contains two at least electronic interface units, and every electronic interface unit contains main control subunit, network module, network control subunit, input/output gating subunit, FPGA control subunit, district section collection subunit and district section drive output subunit, network control subunit be connected respectively with main control subunit and network module, input/output gating subunit be connected respectively with main control subunit and FPGA control subunit, district section drive output subunit and district section collection subunit connect FPGA control subunit respectively, each electronic interface unit's network control subunit is parallelly connected, district section collection subunit is parallelly connected, district section drive output subunit is parallelly connected. Compared with the prior art, the utility model discloses under main mode, the duplex can carry out incessant switching in succession, guarantees that equipment normally works.

Description

Electronic interface equipment with master parallel mode

Technical Field

The utility model relates to an electronic interface equipment in railway signal field especially relates to an electronic interface equipment who possesses owner and mode.

Background

The axle counting equipment is installed on stations at two ends of a railway, the passing number of wheel pairs of the train is detected by using sensors installed on steel rails, and three states of whether a track section is free, occupied or interfered are represented by microcomputer calculation. In other words, a railway signaling device capable of detecting the passage of a wheel. The interlocking device is a device for controlling turnouts, access routes and signals of a station and realizing an interlocking relationship between the turnouts, the access routes and the signals.

At present, most of domestic axle counting systems output track section occupation checking results in a relay driving mode, and an interlocking system acquires section occupation information by acquiring relay states; and the foreign branch axle counting system cancels the intermediate link of the relay, and realizes the communication mode connection of the axle counting system and the interlocking system.

The axle counting electronic interface unit is used as a communication interface of the axle counting system and the all-electronic interlocking equipment and plays a role of converting the relay interface into the communication interface. The axle counting electronic interface unit connects the single boards inserted into the box through the motherboard inside the box. The single board of the axle counting electronic interface comprises a power supply board, a power supply back board, a main control back board, an input/output back board and a switching board.

The electronic interface equipment can be connected with a plurality of axle counting devices, collects the section states output by the axle counting host, packages the section states and sends the section states to the interlock, receives the reset and pre-reset commands sent by the interlock, and sends the commands to the corresponding axle counting devices. The electronic interface equipment can replace the original relay mode and finish information interaction between the axle counting equipment and the interlocking equipment in a communication mode.

The axle counting electronic interface device in the prior art comprises two systems, the device determines respective main and standby states of the two systems according to a configuration port, a power-on sequence and the like after being powered on, the two systems are responsible for managing the states of the two systems in a main and standby mode through a state management unit, only one system is a main system, the main system and the standby system simultaneously receive a command sent by interlocking, the main system executes the command, the standby system does not execute the command, the main system uploads effective data to the interlocking system, the standby system does not upload the effective data to the interlocking system, and only uploads channel check data. When the external main/standby system configuration input is automatic, the main system enters a fault state, the standby system is automatically switched to the main system, and the main system is executed.

The disadvantages of this device are: the main-standby mode axle counting electronic interface device requires that two systems can not work in the main system at the same time, wherein one system is a standby system, the system outputs invalid information for a long time, does not execute an interlocking sending command, and only when the main system enters a fault state, the standby system can be switched to the main system, so that the utilization rate of equipment is low; if the backup system is erroneously switched to the primary system, the interlock system may be affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing an electronic interface equipment who possesses owner and mode in order to overcome the defect that above-mentioned prior art exists and guarantee safe and reliable communication between interlocking and the axle counting equipment.

The purpose of the utility model can be realized through the following technical scheme:

the electronic interface equipment with the master combination mode is connected with axle counting equipment and interlocking equipment and comprises at least two electronic interface units, wherein each electronic interface unit comprises a master control subunit, a network module, a network control subunit, an input/output gating subunit, an FPGA (field programmable gate array) control subunit, a section acquisition subunit and a section driving output subunit, the network control subunit is respectively connected with the master control subunit and the network module, the input/output gating subunit is respectively connected with the master control subunit and the FPGA control subunit, the section driving output subunit and the section acquisition subunit are respectively connected with the FPGA control subunit, the network control subunits of the electronic interface units are connected in parallel, the section acquisition subunits are connected in parallel, and the section driving output subunits are connected in parallel.

The network module comprises an Ethernet control chip, a configuration circuit and an RJ45 interface.

The network control subunit comprises an ARM chip, a configuration circuit, an MAC address memory and a CF card memory.

The main control subunit comprises an ARM chip, a configuration circuit and a serial port communication circuit.

The input and output gating subunit is a decoder circuit.

The FPGA control subunit comprises an FPGA chip and a peripheral circuit.

The section acquisition subunit comprises an acquisition circuit, an acquisition control circuit and an acquisition protection circuit.

The section driving output subunit comprises a dynamic driving output circuit, a relay combination circuit and a return detection circuit.

The equipment also comprises a fault alarm module which is respectively connected with the main control subunit and the section driving output subunit.

Compared with the prior art, the utility model has the advantages of it is following:

(1) the system comprises at least two electronic interface units, wherein the two electronic interface units are not connected with each other, the drive output is parallel, the acquisition ends are parallel, the communication sections are parallel, the system can work in a master parallel mode, and the two units can perform continuous and uninterrupted switching to ensure the normal work of equipment.

(2) The relay working mode before the interlocking and axle counting device can be replaced.

Drawings

Fig. 1 is a schematic structural diagram of an electrical interface unit according to the present embodiment.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.

Examples

An electronic interface device with a master-slave mode, which is connected with an axle counting device and an interlocking device, comprises at least two electronic interface units, as shown in fig. 1, each electronic interface unit includes two main control subunits 1, two network modules 2, one network control subunit 3, one input/output gating subunit 4, two FPGA control subunits 5, a plurality of segment acquisition subunits 6, and a plurality of segment driving output subunits 7, the network control subunit 3 is connected to the main control subunit 1 and the network module 2, the input/output gating subunit 4 is connected to the main control subunit 1 and the FPGA control subunit 5, the segment driving output subunit 7 and the segment acquisition subunit 6 are connected to the corresponding FPGA control subunit 5, the network control subunits 3 of each electronic interface unit are connected in parallel, the segment acquisition subunits 6 are connected in parallel, and the segment driving output subunits 7 are connected in parallel.

The network module 2 includes an ethernet control chip, configuration circuitry and an RJ45 interface.

The network control subunit 3 includes an ARM chip and a configuration circuit of NXP corporation, an MAC address memory, and a CF card memory.

The main control subunit 1 comprises an ARM chip, a configuration circuit and a serial communication circuit of an NXP company.

The input-output strobe subunit 4 is a decoder circuit.

The FPGA control subunit 5 includes an FPGA chip and peripheral circuits.

The section acquisition subunit 6 comprises an acquisition circuit, an acquisition control circuit and an acquisition protection circuit.

The section driving output subunit 7 comprises a dynamic driving output circuit, a relay combination circuit and a return detection circuit.

The device also comprises a fault alarm module which is respectively connected with the main control subunit 1 and the section driving output subunit 7.

The electronic interface subunit receives the section driving command sent by interlocking through the two network modules 2, the network control subunit 3 sends the received section driving command to the two main control subunits 1, the two main control subunits 1 respectively analyze the command, according to the command analysis result, the two FPGA control subunits 5 are respectively controlled through the input and output gating subunit 4, and the section driving output subunit 7 acts to complete section driving output. Meanwhile, the two main control subunits 1 respectively control the corresponding FPGA control subunits 5 to carry out recheck on the section drive output result, the recheck result is incorrect, and the section drive output is cut off through a fault alarm module.

The electronic interface subunit dynamically acquires the section state output by the axle counting through the section acquisition subunit 6, under the condition that the acquisition channel of the detection section is normal, the two FPGA control subunits 5 upload the acquisition section state to the corresponding main control subunit 1, the two main control subunits 1 interact the acquired result to each other, the two main control subunits 1 compare the interactive acquisition result of each other with the acquisition result of the self, the acquisition result is inconsistent, the section driving output is cut off through the fault alarm module, and the section acquisition result is stopped being sent to the interlock; the acquisition results are consistent, the two main control subunits 1 respectively pack the section states acquired by the two main control subunits, and pack data according to protocol requirements, the two main control subunits 11 respectively upload odd bytes and even bytes after being packed to the network control subunit 3, and the network control subunit 3 sequentially packs the odd bytes and the even bytes and then sends the odd bytes and the even bytes to the interlocking equipment through the two network modules 2.

Claims

1. The electronic interface equipment with the master combination mode is connected with axle counting equipment and interlocking equipment and is characterized by comprising at least two electronic interface units, wherein each electronic interface unit comprises a master control subunit, a network module, a network control subunit, an input/output gating subunit, an FPGA (field programmable gate array) control subunit, a section acquisition subunit and a section driving output subunit, the network control subunit is respectively connected with the master control subunit and the network module, the input/output gating subunit is respectively connected with the master control subunit and the FPGA control subunit, the section driving output subunit and the section acquisition subunit are respectively connected with the FPGA control subunit, the network control subunits of the electronic interface units are connected in parallel, the section acquisition subunits are connected in parallel, and the section driving output subunits are connected in parallel.

2. The electrical interface device of claim 1, wherein the network module comprises an ethernet control chip, a configuration circuit, and an RJ45 interface.

3. The electrical interface device of claim 1, wherein the network control subunit comprises an ARM chip and configuration circuit, a MAC address memory and a CF card memory.

4. The electrical interface device of claim 1, wherein the master control subunit comprises an ARM chip, a configuration circuit, and a serial communication circuit.

5. The electrical interface device of claim 1, wherein said input-output strobe subunit is a decoder circuit.

6. The electrical interface device with master-slave mode as claimed in claim 1, wherein said FPGA control subunit comprises an FPGA chip and peripheral circuits.

7. The electrical interface device of claim 1, wherein said segment acquisition subunit comprises an acquisition circuit, an acquisition control circuit, and an acquisition protection circuit.

8. The electrical interface device with master-slave mode as claimed in claim 1, wherein said segment driving output subunit comprises a dynamic driving output circuit, a relay combination circuit and a back-check circuit.

9. The electrical interface device with master combination mode as claimed in claim 1, further comprising a fault alarm module connected to the master control subunit and the segment drive output subunit respectively.