CN206542442U - A kind of signal access device for railway dispatching system - Google Patents
A kind of signal access device for railway dispatching system Download PDFInfo
- Publication number
- CN206542442U CN206542442U CN201720322405.6U CN201720322405U CN206542442U CN 206542442 U CN206542442 U CN 206542442U CN 201720322405 U CN201720322405 U CN 201720322405U CN 206542442 U CN206542442 U CN 206542442U
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- data
- scheduling
- chip
- railway dispatching
- dispatching system
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- Computer And Data Communications (AREA)
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Abstract
The utility model discloses a kind of signal access device for railway dispatching system, it is connected by analog-to-digital conversion module with scheduling signals generating means, and the scheduling signals that scheduling signals generating means are exported are converted to scheduling data；It is connected by protocol converter with analog-to-digital conversion module, the scheduling data conversion that analog-to-digital conversion module is exported is into network data, host computer obtains the network data of protocol converter output by being connected with protocol converter, and gives railway dispatching server by network data transmission by LAN.Therefore, the utility model enables railway dispatching system directly to obtain the scheduling signals of each website by the way that the scheduling signals transmitted with high speed serialization SPI protocol are converted into network data.
Description
Technical field
The utility model is related to railway dispatching technical field, and more particularly to a kind of signal for railway dispatching system is accessed
Device.
Background technology
In railway dispatching system, scheduling signals are converted into data signal by modulus conversion chip and follow high speed serialization
SPI protocol is transmitted in circuit, the characteristics of SPI protocol has high speed, good reliability, but presence cannot directly access ether
The limitation of net.With the development of network technology, railway dispatching system is gradually increased to the demand of network, SPI serial protocols this
Planting limitation, just more utility model shows.Therefore, railway dispatching signal can be linked into the device of network in the urgent need to a kind of, made
The scheduling signals for being stored in each website can not directly be got by obtaining railway dispatching system.
Utility model content
The purpose of this utility model is：When solving existing scheduling signals with the transmission of high speed serialization SPI protocol, it is impossible to connect
Enter Ethernet, cause railway dispatching system can not directly obtain the technical problem of scheduling signals of each website.
In order to realize above-mentioned utility model purpose, the utility model provides following technical scheme：
A kind of signal access device for railway dispatching system, it include analog-to-digital conversion module, protocol converter and on
Position machine；Also, the analog-to-digital conversion module is connected with scheduling signals generating means, and the scheduling signals generating means are exported
Scheduling signals be converted to scheduling data；The protocol converter is connected with the analog-to-digital conversion module, and the modulus is turned
Change the mold block output the scheduling data conversion into network data, the host computer by being connected with the protocol converter, and
The network data of the protocol converter output is obtained, and railway dispatching server is given by network data transmission by LAN；
Wherein, the protocol converter includes central processing unit, network card chip, PHY chip and exchange chip；Wherein, institute
Central processing unit is stated to parse the scheduling data of outside input and obtain data message, and by data bus transmission to institute
State network card chip；The data message is packaged into network data and incited somebody to action by the network card chip according to the Ethernet protocol of setting
The network data transmission gives the PHY chip, and the PHY chip is connected to institute by connected Ethernet electrical interface
State the port of host computer；Also, the central processing unit is connected by two I/O mouthfuls with the exchange chip, one of I/O
Mouth is used for the data flow path that the PHY chip is configured by the exchange chip, and another I/O mouthfuls is used to be the exchange core
Piece provides clock signal.
According to a kind of specific embodiment, in the signal access device of the present utility model for railway dispatching system,
The protocol converter also includes DB26 interfaces and differential conversion circuit, and the DB26 interfaces pass the scheduling data of outside input
It is defeated by the differential conversion circuit, differential signal is converted into Transistor-Transistor Logic level signal by the differential conversion circuit, and by TTL signal
Export to the central processing unit.
According to a kind of specific embodiment, in the signal access device of the present utility model for railway dispatching system,
The central processing unit has a SPI interface and RS485 interfaces, the DB26 interfaces include two SPI differential lines pair and one
RS485 differential lines pair.
According to a kind of specific embodiment, in the signal access device of the present utility model for railway dispatching system,
One isolation circuit is set between the network card chip and the PHY chip, and the isolation circuit is made up of transformer.
Compared with prior art, the beneficial effects of the utility model：Letter of the present utility model for railway dispatching system
In number access device, it is connected by analog-to-digital conversion module with scheduling signals generating means, and scheduling signals generating means are exported
Scheduling signals be converted to scheduling data；It is connected again by protocol converter with analog-to-digital conversion module, and by analog-to-digital conversion module
The scheduling data conversion of output is into network data, and host computer obtains protocol converter output by being connected with protocol converter
Network data, and give railway dispatching server by network data transmission by LAN.Therefore, the utility model is by will be with
The scheduling signals of high speed serialization SPI protocol transmission are converted into network data, railway dispatching system is directly obtained each
The scheduling signals of website.
Brief description of the drawings：
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the structural representation of protocol converter of the present utility model.
Embodiment
The utility model is described in further detail with reference to test example and embodiment.But should not be by this
The scope for being interpreted as the above-mentioned theme of the utility model is only limitted to following embodiment, all to be realized based on the utility model content
Technology belongs to scope of the present utility model.
Structural representation of the present utility model with reference to shown in Fig. 1；Wherein, it is of the present utility model to be used for railway dispatching system
Signal access device include analog-to-digital conversion module, protocol converter and host computer.Also, analog-to-digital conversion module and scheduling signals
Generating means are connected, and the scheduling signals that scheduling signals generating means are exported are converted to scheduling data.Protocol converter and modulus
Modular converter is connected, and the scheduling data conversion that analog-to-digital conversion module is exported is into network data.Host computer by with protocol conversion
Device is connected, and obtains the network data of protocol converter output, and is taken network data transmission to railway dispatching by LAN
Business device.
Therefore, the utility model is made by the way that the scheduling signals transmitted with high speed serialization SPI protocol are converted into network data
Railway dispatching system can directly obtain the scheduling signals of each website.
The structural representation of protocol converter of the present utility model with reference to shown in Fig. 2；Wherein, the association in the utility model
Discussing converter includes central processing unit, network card chip, PHY chip and exchange chip.Specifically, central processing unit is to outside input
Scheduling data parsed and obtain data message, and by data bus transmission to network card chip；Network card chip is according to setting
Fixed Ethernet protocol, is packaged into network data and by network data transmission to PHY chip, PHY chip passes through by data message
Connected Ethernet electrical interface and the port for being connected to host computer；Also, central processing unit is by two I/O mouthfuls with exchanging
Chip is connected, and one of I/O mouthfuls is used for the data flow path by exchange chip configuration PHY chip, and another I/O mouthfuls is used for
Clock signal is provided for exchange chip.
Also, protocol converter of the present utility model is made up of core board and bottom plate, central processing is provided with core board
Device, network card chip, differential conversion circuit and DB26 interfaces.PHY chip, exchange chip and and PHY chip are provided with bottom plate
Two Ethernet electrical interfaces of connection, two optical modules being connected with exchange chip.
Specifically, the port that central processing unit receives scheduling data sets DB26 interfaces and differential conversion circuit.Wherein,
DB26 interfaces are by the schedule data transmission of outside input to differential conversion circuit, and differential signal is converted into by differential conversion circuit
Transistor-Transistor Logic level signal, and TTL signal is exported to central processing unit.When implementing, central processing unit has SPI interface and RS485
Interface, DB26 interfaces include two SPI differential lines pair and a RS485 differential lines pair.
Meanwhile, an isolation circuit is set between network card chip and PHY chip, and the isolation circuit is made up of transformer, used
Irreversible infringement is caused to protocol converter in the mutation of anti-stop signal.
Claims (4)
1. a kind of signal access device for railway dispatching system, it is characterised in that including analog-to-digital conversion module, protocol conversion
Device and host computer；Also, the analog-to-digital conversion module is connected with scheduling signals generating means, and the scheduling signals are generated into dress
The scheduling signals for putting output are converted to scheduling data；The protocol converter is connected with the analog-to-digital conversion module, and will be described
The scheduling data conversion of analog-to-digital conversion module output is into network data, and the host computer with the protocol converter by connecting
Connect, and obtain the network data of the protocol converter output, and taken network data transmission to railway dispatching by LAN
Business device；
Wherein, the protocol converter includes central processing unit, network card chip, PHY chip and exchange chip；Wherein, in described
Central processor is parsed to the scheduling data of outside input and obtains data message, and gives the net by data bus transmission
The core of the card piece；The data message is packaged into network data and by described in by the network card chip according to the Ethernet protocol of setting
Network data transmission gives the PHY chip, and the PHY chip is connected on described by connected Ethernet electrical interface
The port of position machine；Also, the central processing unit is connected by two I/O mouthfuls with the exchange chip, one of I/O mouthfuls of use
In the data flow path that the PHY chip is configured by the exchange chip, another I/O mouthfuls is used to carry for the exchange chip
For clock signal.
2. it is used for the signal access device of railway dispatching system as claimed in claim 1, it is characterised in that the protocol conversion
Device also includes DB26 interfaces and differential conversion circuit, and the schedule data transmission of outside input is given the difference by the DB26 interfaces
Differential signal is converted into Transistor-Transistor Logic level signal by change-over circuit, the differential conversion circuit, and TTL signal is exported in described
Central processor.
3. it is used for the signal access device of railway dispatching system as claimed in claim 2, it is characterised in that the center processing
Utensil has SPI interface and RS485 interfaces, and the DB26 interfaces include two SPI differential lines pair and a RS485 differential lines
It is right.
4. the signal access device for railway dispatching system as described in one of claims 1 to 3, it is characterised in that described
One isolation circuit is set between network card chip and the PHY chip, and the isolation circuit is made up of transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322405.6U CN206542442U (en) | 2017-03-30 | 2017-03-30 | A kind of signal access device for railway dispatching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720322405.6U CN206542442U (en) | 2017-03-30 | 2017-03-30 | A kind of signal access device for railway dispatching system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206542442U true CN206542442U (en) | 2017-10-03 |
Family
ID=59942749
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720322405.6U Expired - Fee Related CN206542442U (en) | 2017-03-30 | 2017-03-30 | A kind of signal access device for railway dispatching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206542442U (en) |
-
2017
- 2017-03-30 CN CN201720322405.6U patent/CN206542442U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171003 Termination date: 20180330 |
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| CF01 | Termination of patent right due to non-payment of annual fee |