CN207115302U - One kind isolation communication backplane - Google Patents
One kind isolation communication backplane Download PDFInfo
- Publication number
- CN207115302U CN207115302U CN201721197799.3U CN201721197799U CN207115302U CN 207115302 U CN207115302 U CN 207115302U CN 201721197799 U CN201721197799 U CN 201721197799U CN 207115302 U CN207115302 U CN 207115302U
- Authority
- CN
- China
- Prior art keywords
- connector
- master controller
- communication
- interfaces
- functional module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Safety Devices In Control Systems (AREA)
Abstract
The utility model discloses one kind to isolate communication backplane, and the communication backplane is provided with master controller connector I, master controller connector II, power input connectors I, power input connectors II, multiple functional module connectors, multiple input and output connectors；Functional module connector corresponds with input and output connector, is connected between master controller connector and power input connectors, between functional module connector and input and output connector by wall outlet connector；Communication backplane is provided with：2 power input interfaces, 2 Host Controler Interfaces, multiple signal input output interfaces, multiple functional module interfaces, solve deficiency of the communication backplane in digital instrument control system of nuclear power plant application, support high-speed communication ability and need to meet multiple systems logical architecture, the cost of control system can be reduced, it is often more important that improve the applicability of system.
Description
Technical field
Nuclear power plant's digitlization instrument control field is the utility model is related to, in particular it relates to a kind of isolation communication backplane.
Background technology
Cabinet equipment coordinates the implementation of communication backplane frequently with multifunction module in industrial control system.It is and this
The communication back of the body is as the bridge for connecting each functional module in implementation, and therefore, the quality of communication backplane directly affects whole control
The performance of system.With the fast development of the communication technology, communication backplane is at high speed (high bandwidth) at present, high reliability, it is low into
Originally, good solution has all been obtained the problem of low error rate etc..Such as utility model patent " 201220540760.8 "《It is high
Speed communication back of the body APSB》Its transmission rate is up to more than 12.5Gbps.However, in increasing Control System Design, according to
The height of the reliability requirement of whole control system, it is proposed that different system logic architectures, such as " two take one ".This promotes
The data transmission rate request of high speed before not only needing to meet in the design carried on the back that communicates, it is also necessary to which it disclosure satisfy that certain system
Logical architecture.In digital instrument control system of nuclear power plant, its different reliability of object that a kind of control system controls according to it will
Ask there is also difference, so that the system logic architecture that its needs meets is also just different.Therefore, according to the design side carried on the back at present
Formula, to meet a kind of application requirement of digital instrument control system of nuclear power plant, a kind of control system need to be equipped with polytype communication
The back of the body.
Utility model content
The utility model provides a kind of isolation communication backplane, and the communication backplane that solves the above problems is in nuclear power plant's digitizer
Deficiency in the application of control system, support high-speed communication ability and need to meet multiple systems logical architecture, control can be reduced
The cost of system, it is often more important that improve the applicability of system.
To realize above-mentioned purpose of utility model, this application provides one kind to isolate communication backplane, is set in the communication backplane
There are master controller connector I, master controller connector II, power input connectors I, power input connectors II, multiple functions
Modular connector, multiple input and output connectors；Functional module connector corresponds with input and output connector, master controller
Pass through wall outlet connector between connector and power input connectors, between functional module connector and input and output connector
Connection；Communication backplane is provided with：It is 2 power input interfaces, 2 Host Controler Interfaces, multiple signal input output interfaces, multiple
Functional module interface.
Further, communication backplane is introduced from outside into two-way by power input connectors I and power input connectors II
Dc source, two-way power supply is respectively allocated to by 2 master controller connectors and multiple functional module connectors by PCB layout
Identical pin on.
Further, communication backplane is provided with toggle switch and completes module slot position with the module cooperation installed in communication backplane
Number, cabinet number, control station station number identification.
Further, master controller connector I and master controller connector II define respectively 14 pairs of LVDS signaling interfaces；
Wherein, the communication link that 12 pairs of LVDS signaling interfaces are used between master controller connector and 12 functional module connectors, its
The communication link that 2 pairs of LVDS signaling interfaces of remaininging are used between 2 master controller connectors；
Each functional module connector definition has 3 pairs of LVDS signaling interfaces to be designated as I #LVDS signaling interfaces, II #LVDS letters respectively
Number interface, III #LVDS signaling interfaces；Wherein, the communication link that III #LVDS interfaces are used between adjacent function modules connector,
I #, II #LVDS interfaces are respectively used to the communication link between master controller connector I, II, and odd number functional module connector
I #LVDS interfaces be connected with master controller connector I, II #LVDS interfaces are connected with master controller connector II；Even number function
I #LVDS interfaces of modular connector are connected with master controller connector II, II #LVDS interfaces and the phase of master controller connector I
Even.
Backboard has 14 slots altogether, and the slot of left and right ends is main controller module (or expansion module) slot, and other 12
Individual slot is functional module slot.Physical isolation between the two parts of left and right, but left and right two parts mirror image is identical.Using the side of isolation
The backboard of one piece of Commonly Used Size is divided into two independent but compatible parts by formula.The part pluggable one respectively of left and right two
Main control module (expansion module) and six functional modules.Because separate between the two parts of left and right but complete mirror image is identical.
Therefore, a backboard can realize a master control cabinet and any combination of an extended housing.Meeting the premise of system requirements
Under significantly saved the space occupancy volume of system.
Further, when the system logic architecture of digital instrument control system of nuclear power plant configures communication construction for list：
Only have a connector to be used in communication backplane master controller connector I and master controller connector II, in addition
One connector is not connected to any module；When using only master controller connector I, master controller connector I and odd number function
II #LVDS interface communication links are in active state on I #LVDS interfaces and even number functional module connector on modular connector；
When using only master controller connector II, master controller connector II and II #LVDS interfaces on odd number functional module connector
Active state is in I #LVDS interface communication links on even number functional module connector.
Further, when the system logic architecture of digital instrument control system of nuclear power plant is from hot backup redundancy communication construction：
Master controller connector I and master controller connector II use simultaneously, and all LVDS interface communications in the back of the body that communicates
Link is in active state；Entered simultaneously between master controller connector I and master controller connector II by data exchange channels
The switching of row main frame or slave is to meet the needs of hot backup redundancy.
Further, when the system logic architecture of digital instrument control system of nuclear power plant is 1oo2D communication constructions：
Master controller connector I and master controller connector II use simultaneously, master controller connector I and odd number function mould
The communication link between communication link, master controller connector II and even number functional module connector between block connector is located
In active state.
Further, functional module is powered, communicated in communication backplane, connector pin used in slot number identification defines
It is identical.
Further, the TX of master controller connector ± be connected to corresponding function modular connector RX ±.
Further, the external interface connector of each connector of communication backplane is the CPCI connections through walls of three types
Device, the CPCI wall outlet connectors connection pin length of three types is different, is respectively：Minute hand, middle pin, hour hand；The network of three kinds of pins
It is respectively defined as：Power supply signal, the interconnection signal that communicates, insert or pull out detection signal；It is long during modules insert
Pin, middle pin, hour hand contact electricity with communication backplane successively, and withdrawal process is opposite.
One or more technical schemes that the application provides, have at least the following technical effects or advantages：
LVDS high-speed communications backboard in the application is completed to be module for power supply, and providing signal input and output for functional module connects
Mouthful, there is provided slot number, cabinet number, control station station number identification function, high-speed communication between module and module is completed, in actual test
Middle differential eye signal quality is good, and Signal Integrity Design is excellent, and module in module long-time communication test with, without packet loss, leading to
Believe the control of residual error rate 10-9Within/h.
Brief description of the drawings
Accompanying drawing described herein is used for providing further understanding the utility model embodiment, forms the one of the application
Part, the restriction to the utility model embodiment is not formed；
Fig. 1 is communication backplane composition connection diagram；
Fig. 2 is input and output connector and functional module connector connection diagram；
Fig. 3 is slot number, cabinet number, station number identification implementation schematic diagram；
Fig. 4 communication back of the body Principle of Communication block diagrams；
Fig. 5 communication back of the body annexations.
Embodiment
The utility model provides a kind of isolation communication backplane, and the communication backplane that solves the above problems is in nuclear power plant's digitizer
Deficiency in the application of control system, support high-speed communication ability and need to meet multiple systems logical architecture, control can be reduced
The cost of system, it is often more important that improve the applicability of system.
In order to be more clearly understood that above-mentioned purpose of the present utility model, feature and advantage, below in conjunction with the accompanying drawings and tool
The utility model is further described in detail body embodiment.It should be noted that in the case where not conflicting mutually,
Feature in embodiments herein and embodiment can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
It is new to be implemented using other different from the other modes in the range of being described herein, therefore, protection of the present utility model
Scope is not limited by following public specific embodiment.
The utility model offer is a kind of not only to have been met the needs of high rate communication ability but also had supported digitlization instrument control system of nuclear power plant
" single configuration " that is commonly used in system, " two take one ", the communication backplane of " hot standby " three kinds of system logic architectures.It is mainly by power input
(12) interface (2), signal input output interface (12), Host Controler Interface (2), functional module interface compositions.It is main
Controller connector I, II and power input connectors I, II；Functional module connector II-Ⅻ and input and output connector II-Ⅻ
Connected respectively by wall outlet connector.Each part connection diagram is as shown in Figure 1.
One kind isolation communication backplane has following function：
1st, to be connected to module for power supply on backboard；
For the communication back of the body originally as passive module, it can be from outside by power input connectors I and power input connectors II
Introduce two-way dc source.Then this two-way power supply is respectively allocated to 2 master controller connectors by the communication back of the body by PCB layout
On the identical pin of 12 functional module connectors, so as to provide power input to be connected to the module of communication back.Two-way
In dc source, when breaking down all the way, power supply can take over its normal work all the way in addition.Design improves system in this
Safety and reliability.
2nd, signal input output interface is provided for functional module；
Communication is carried on the back each functional module connector and is connected with an input and output connector by type connector through walls, such as
Shown in Fig. 2.Therefore, the module of functional module connector is connected to, its input/output signal is relayed to input/output signal company
Connect device.It is for test or more convenient to input/output module loading signal that this causes, improves operability and the practicality of system
Property.Socket is fixed on panel (i.e. wall) and passes through the connector of panel.
3rd, toggle switch and module coordinate completion module slot number, cabinet number, control station station number identification function on backboard；
The utility model is designed in back using drop-down (choosing whether to pull down by toggle switch) may be selected, binding modules
On pull-up design identification function to being plugged in slot number residing for the module of back, cabinet number, control station station number can be achieved.Dial
Code switch (being also DIP switch, toggle switch, overclocking switch, address switch, move with the hand switch, digital switch, thumb-acting switch) is one
Money is used for the address switch of operational control, using 0/1 binary coding principle.Popular say namely a can use hand
The miniature switch stirred.
4th, the high-speed communication function between module and module is completed.
The utility model high-speed communication implementation designs the communication link between groove position using LVDS technologies.Due to
The LVDS amplitudes of oscillation are low, thus switch speed is fast, are adapted to High Speed Transfer.And it is to reach that nuclear power plant's common system logical architecture can be supported
Purpose.The communication back of the body, which uses, is implemented as described below mode：
Communication back of the body Principle of Communication block diagram is as shown in Figure 4.Master controller connector I and master controller connector II define respectively
There are 14 pairs of LVDS signaling interfaces.The wherein 12 pairs communication chains being used between master controller connector and 12 functional module connectors
Road, remaining the 2 pairs communication links being used between 2 master controller connectors.Each functional module connector definition has 3 pairs of LVDS signals
Interface is designated as I #, II #, III # respectively.The communication link that wherein III #LVDS interfaces are used between adjacent function modules connector,
I #, II #LVDS interfaces are respectively used to the communication link between master controller connector I, II, and odd number functional module connector
I #LVDS interfaces be connected with master controller connector I, II #LVDS interfaces are connected with master controller connector II；Even number function
I #LVDS interfaces of modular connector are connected with master controller connector II, II #LVDS interfaces and the phase of master controller connector I
Even.Communication back of the body annexation is as shown in Figure 5.
Digital instrument control system of nuclear power plant common system logical architecture has single configuration, principal and subordinate's hot backup redundancy, 1oo2D communication frame
Structure.It is as follows for three kinds of conventional framework the utility model realization principles：
During selection list configuration communication construction, communication back of the body master controller connector I and master controller connector II are only wherein
One connector is used, and another connector is not connected to any module.It is main when only using master controller connector I
Controller connector I connects with II #LVDS on I #LVDS interfaces on odd number functional module connector and even number functional module connector
Port communications link is in active state.When only using master controller connector II, master controller connector II and odd number work(
Can I #LVDS interface communication links be in and enliven shape on II #LVDS interfaces and even number functional module connector on modular connector
State.
When selecting principal and subordinate's hot backup redundancy communication construction, master controller connector I and master controller connector II use simultaneously,
And all LVDS interface communication links are in active state in the communication back of the body.Master controller connector I connects with master controller simultaneously
The switching of main frame or slave can be carried out between device II at any time by data exchange channels to meet the needs of hot backup redundancy.
When selecting 1oo2D communication constructions, master controller connector I and master controller connector II use simultaneously, but such a
In the case of communication construction, the communication link master controller connection between master controller connector I and odd number functional module connector
Communication link between device II and even number functional module connector is in active state.
In addition to These characteristics, to improve system conformance and module versatility, realize difference in functionality module in each function
Any connection of modular connector position, every functional module is powered, communicated, connector pin used in slot number identification is determined
Justice is identical, and all LVDS signal leads are made to intersect in back, i.e. the TX of master controller connector ± be connected to corresponding function mould
Block connector RX ±, the TX of the RX of master controller connector ± be connected to corresponding function modular connector ±, this interconnection
Mode can realize the uniformity and reliability of intermodule on the premise of system flexibly configurable is ensured with minimum cost, and carry
The compatibility of the slotting module of height.
This method selects the CPCI wall outlet connectors with minute hand, middle pin and hour hand three types to carry on the back each company as communication
Connect the external interface connector of device, by the network of these three pins be respectively defined as power supply () signal, communication interconnection signal, insertion
(or extraction) detection signal.During modules insert, minute hand contacts electricity, followed by middle pin with backboard at first, finally
It is hour hand, withdrawal process then contrast, this makes it possible to by judging the signal condition of hour hand come the state of discrimination module, and
As the controlling switch for turning on or off communication, so as to avoid the false triggering that reception error message is brought, the heat for completing module is inserted
Pull out function.This method has carried out good shielding to LVDS signals simultaneously, beside all LVDS signal pins adjacent pin all by
Be defined as (GND) signal, it is ensured that the area of LVDS signals and its returned signal composition is minimum, improves anti-EMI filter ability, also reduces
To external radiation.The stitch position of power supply signal defines the influence for all having fully taken into account each power supply ripple and noise simultaneously, by line
Ripple and the larger power supply signal of noise are defined on the minute hand away from key signal, while define the minute hand pin near it nearby
For ground.
The utility model is greatly reduced the signals such as reflection, crosstalk and sequential by the lamination and cabling of optimized PCB
Integrity issue.
Fig. 3 illustrates to carry on the back each master controller connector and each functional module connector and each master controller connector and phase
Communication link annexation between adjacent parity function modular connector.
The utility model LVDS high-speed communications back of the body be mainly used as in digital instrument control system of nuclear power plant main controller module and
The communication port of each functional module, and powered for modules, while provide signal input/output switching for each functional module
Mouthful.
Communication back shares 14 modular connectors, and wherein master controller connector I, II can only connect " master controller mould
Block " or " expansion module ", 12 functional module connectors can arbitrarily connection communication module, digital quantity input module, digital quantity it is defeated
Go out the different functional module such as module, Analog input mModule, analog output module.
The LVDS high-speed communications back of the body in the utility model, each function in cabinet is realized for digital instrument control system of nuclear power plant
The function such as point-to-point communication, module for power supply, module by signal input and output between module and main controller module, its LVDS signal
The amplitude of oscillation is low, noise is small, speed is high, long transmission distance, strong antijamming capability cause the very high reliability of the system tool of complexity and can
With property, consider further that Signal Integrity Design so that the number of dropped packets of whole communication system, the bit error rate within tolerance interval,
It is adapted to use in digital instrument control system of nuclear power plant field.
Although having been described for preferred embodiment of the present utility model, those skilled in the art once know substantially
Creative concept, then other change and modification can be made to these embodiments.So appended claims are intended to be construed to wrap
Include preferred embodiment and fall into having altered and changing for the scope of the utility model.
Obviously, those skilled in the art can carry out various changes and modification without departing from this practicality to the utility model
New spirit and scope.So, if these modifications and variations of the present utility model belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to comprising including these changes and modification.
Claims (8)
1. one kind isolation communication backplane, it is characterised in that the communication backplane is provided with master controller connector I, master controller
Connector II, power input connectors I, power input connectors II, multiple functional module connectors, multiple input and output connection
Device；Functional module connector corresponds with input and output connector, between master controller connector and power input connectors,
Connected between functional module connector and input and output connector by wall outlet connector；Communication backplane is provided with：2 power supplys
Input interface, 2 Host Controler Interfaces, multiple signal input output interfaces, multiple functional module interfaces.
2. isolation communication backplane according to claim 1, it is characterised in that communication backplane passes through power input connectors I
Two-way dc source is introduced from outside into power input connectors II, two-way power supply is respectively allocated to by 2 masters by PCB layout
On the identical pin of controller connector and multiple functional module connectors.
3. isolation communication backplane according to claim 1, it is characterised in that communication backplane is provided with toggle switch with communicating
The module installed on backboard, which coordinates, completes module slot number, cabinet number, the identification of control station station number.
4. isolation communication backplane according to claim 1, it is characterised in that communication backplane is provided with physical isolation band will be logical
Letter backboard is divided into left area and right half area, and left area and right half area are equipped with multiple slots, and left area and the right side
Half region is symmetrical.
5. isolation communication backplane according to claim 1, it is characterised in that master controller connector I and master controller connect
Connecing device II and defining respectively has 14 pairs of LVDS signaling interfaces；Wherein, 12 pairs of LVDS signaling interfaces are used for master controller connector and 12
Communication link between individual functional module connector, remaining 2 pairs of LVDS signaling interface is for logical between 2 master controller connectors
Believe link；
The definition of each functional module connector has that 3 pairs of LVDS signaling interfaces are designated as I #LVDS signaling interfaces respectively, II #LVDS signals connect
Mouth, III #LVDS signaling interfaces；Wherein, the communication link that III #LVDS interfaces are used between adjacent function modules connector, I #,
II #LVDS interfaces are respectively used to the communication link between master controller connector I, II, and odd number functional module connector
I #LVDS interfaces are connected with master controller connector I, and II #LVDS interfaces are connected with master controller connector II；Even number function mould
I #LVDS interfaces of block connector are connected with master controller connector II, and II #LVDS interfaces are connected with master controller connector I.
6. isolation communication backplane according to claim 1, it is characterised in that in communication backplane functional module power supply, communication,
Connector pin used in slot number identification defines identical.
7. isolation communication backplane according to claim 5, it is characterised in that the TX of master controller connector ± be connected to pairs
Answer functional module connector RX ±.
8. isolation communication backplane according to claim 1, it is characterised in that the external interface of each connector of communication backplane
Connector is the CPCI wall outlet connectors of three types, and the CPCI wall outlet connectors connection pin length of three types is different, respectively
Successively decrease successively for length：First pin, the second pin, the 3rd pin；The network of three kinds of pins is respectively defined as：Power supply signal, communication are mutual
Connect signal, insert or pull out detection signal；Modules insert during, the first pin, the second pin, the 3rd pin successively with communication
The upper electricity of backboard contact, withdrawal process are opposite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721197799.3U CN207115302U (en) | 2017-09-19 | 2017-09-19 | One kind isolation communication backplane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721197799.3U CN207115302U (en) | 2017-09-19 | 2017-09-19 | One kind isolation communication backplane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207115302U true CN207115302U (en) | 2018-03-16 |
Family
ID=61588389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721197799.3U Active CN207115302U (en) | 2017-09-19 | 2017-09-19 | One kind isolation communication backplane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207115302U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903482A (en) * | 2021-09-30 | 2022-01-07 | 陕西赛普瑞电气有限公司 | Operation display device for nuclear power station |
-
2017
- 2017-09-19 CN CN201721197799.3U patent/CN207115302U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113903482A (en) * | 2021-09-30 | 2022-01-07 | 陕西赛普瑞电气有限公司 | Operation display device for nuclear power station |
| CN113903482B (en) * | 2021-09-30 | 2023-10-13 | 陕西赛普瑞电气有限公司 | Operation display device for nuclear power station |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10198396B2 (en) | Master control board that switches transmission channel to local commissioning serial port of the master control board | |
| CN101436170A (en) | SPI equipment communication circuit | |
| CN102866729A (en) | server cabinet system | |
| CN107301148A (en) | USB Type C interface modular converter, system and connection method | |
| CN107608469A (en) | A kind of LVDS high-speed communications backboard | |
| CN102253914B (en) | Data transmitting and processing method and device and equipment interface | |
| CN111427824B (en) | Serial port communication circuit | |
| CN103729333A (en) | Backplane bus structure sharing multiple channel time slots and implementation method thereof | |
| CN105005545A (en) | Line card serial port switching device and line card serial port switching method | |
| CN1818895A (en) | Parallel and serial comprehensive bus system and data transmitting method | |
| CN111538689B (en) | Multi-channel PCIE (peripheral component interface express) adapter card with two heterogeneous ends | |
| CN207115302U (en) | One kind isolation communication backplane | |
| CN109561032B (en) | Switch module reaches switch including it | |
| CN109147649B (en) | Display screen control card | |
| CN100542082C (en) | A kind of backplate bus multiplexing method and system | |
| CN217037179U (en) | Communication circuit and communication board | |
| CN107908584B (en) | Multi-path RS-485 communication network | |
| CN108733610B (en) | Exchange board and blade server | |
| CN113726580A (en) | 6U-VPX gigabit network module with dual-redundancy switching function for localization | |
| CN105429902A (en) | Double-main-control-board network system | |
| CN202615169U (en) | Bus compatible interface circuit used for keyless entry system | |
| CN218070234U (en) | Communication device, test card and connector | |
| CN215120760U (en) | Asynchronous communication circuit | |
| CN106603310B (en) | Network management interface system and network shunt | |
| CN219891658U (en) | Hybrid communication board card |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210104 Address after: No.3, Hongda South Road, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: CHINA NUCLEAR CONTROL SYSTEM ENGINEERING Co.,Ltd. Address before: 610000, No. three, 28 south section of Ring Road, Chengdu, Sichuan Patentee before: NUCLEAR POWER INSTITUTE OF CHINA |
|
| TR01 | Transfer of patent right |