CN108984458A - A kind of customized serial open bus - Google Patents
A kind of customized serial open bus Download PDFInfo
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- CN108984458A CN108984458A CN201810903646.9A CN201810903646A CN108984458A CN 108984458 A CN108984458 A CN 108984458A CN 201810903646 A CN201810903646 A CN 201810903646A CN 108984458 A CN108984458 A CN 108984458A
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- 238000004458 analytical method Methods 0.000 claims description 4
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- 230000007246 mechanism Effects 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000012545 processing Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 4
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
- G06F13/4282—Bus transfer protocol, e.g. handshake; Synchronisation on a serial bus, e.g. I2C bus, SPI bus
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Abstract
The present invention provides a kind of serial open bus of customized bus architecture, it is related to bus design, open bus of the invention is used to complete the communication between main control module and each functional module, the present invention includes: reset bus, for issuing unified instruction to each module, all modules is made to return to original state value in the same time；Power bus connects to power supply together, for providing required voltage for each module；Network-bus is also used to individually debug certain module for providing network connection for each module；Self-defined bus, for according to demand, corresponding function bus being added.The present invention can be using embedded technology and computer technology as core, self-defined bus is constructed with the high performance device such as DSP, ARM, single-chip microcontroller and FPGA, independence with higher, modules can be according to specific military testing requirement, customized bus architecture, resource is saved, can be by environmental test, while the localization rate of parts and components of equipment can be improved.
Description
Technical field
The present invention relates to bus design, in particular to a kind of customized serial open bus.
Background technique
It has been since Military Electronic Equipment develops test equipment from U.S.'s the 1950s, type is increasing, and correlation is ground
Study carefully work to be also increasingly taken seriously.With the raising of weaponry tactical qualities and internal structure complexity, weaponry
Requirement in research and development, production and use process to mating test equipment is higher and higher.Since the mid-1970s, China is just
Guided missile has carried out the research work of automatic test equipment, by the exploration and practice of decades, develops and fills for army successively
For more set missile integration test equipments.Currently, guided missile test set mostly uses VXI, PXI or LXI bus to realize, wherein with
Vxi bus form is in the majority.But although although the test equipment developed based on vxi bus has powerful test function
And the system integration of data throughout, height, but still there is volumes it is big, weight is big and mobility is poor the problems such as, at this stage
Domestic test equipment classification can be divided into following a few classes.
PXI (PCI Extensions for Instrumentation) bus is the tool proposed by NI company in 1997
There is the instrument bus specification of the features such as open and modularization.It combines the heavily fortified point of the electrical characteristic of pci bus, Compact PCI
Solidity and the mechanical encapsulation characteristic of Eurocard develop into one and are suitable for test, measurement and data acquisition applications
Mechanical, electrical and software specifications.It is compared with the bus transfer rate of vxi bus 40MB/s, PXI is based on mature pci bus
Technology, bus transfer rate are 132MB/s or 264MB/s, have smaller volume and better performance price ratio, at present state
Interior many companies have launched its convenient test equipment based on PXI bus voluntarily developed.Compare typically Beijing
The portable device PS-360 and PXIS-2690P that general China's observing and controlling and Ling Hua science and technology are released.But on the one hand due to being able to satisfy open country
Outer adverse circumstances require and the PXI cabinet of better performances is less；On the other hand compared with vxi bus, PXI bus standard lacks instrument
The generally participation of device field producer, existing PXI module covering surface compare it is relatively narrow, therefore, PXI bus ordnance missile test
The extensive use of equipment, we also need to continue to wait and see.
LXI (LAN Extensions for Instrumentation) bus be 2004 Nian9Yue Agilent companies and
One kind that a new generation that VXI scientific & technical corporation joint is released is constituted based on ethernet technology, by all kinds of middle-size and small-size bus modules
New instrument platform.LXI specification not only has PXI card formula instrument small size, GPIB instrument high-performance and LAN high-speed data and handles up
The features such as, also meet requirement of the instrument to indexs such as timing, triggering and electromagnetic compatibilities.Since LXI is by Ethernet (IEEE-
802.3) it is used as data transmission medium, without using cabinet and expensive cable, the software of standard can be used, thus LXI is being caused
Power also improves the versatility of system speed and software in reducing system dimension and while shorten the system buildup time, for
Family quickly, it is economical and efficiently create and reconfigure test equipment and create great convenience.However the application of LXI bus is big
It focuses mostly in distributed testing occasion, for highly integrated portable device, in spite of good development prospect, but without
It is applied well.
Above-mentioned VXI, PXI, LXI bus etc. although having powerful test function, and has standard of instruments support,
Be be eventually be all commercial bus form, resource distribution and management kernel relative closure will not be completely open to user, in this way
Just it is unfavorable for the fault location and analysis occasion of army's base level military hardware.On the other hand, since guided missile is in army's base level
Test depth it is relatively low, the less-restrictive of testing process, therefore the demand to reference instrument is relatively low；And regulator
The surplus resources of device may then influence the portable and mobility of equipment.
Summary of the invention
In view of the above deficiencies, the present invention provides a kind of serial open bus of customized bus architecture.
Customized serial open bus of the invention, the open bus is for completing main control module and each function mould
Communication between block, the open bus include: that reset bus, power bus, network-bus and one or more are customized
Bus；
Reset bus makes all modules be restored to initial shape in the same time for issuing unified instruction to each module
State value；
Power bus connects to power supply together, for providing required voltage for each module；
Network-bus is also used to individually debug certain module for providing network connection for each module；
Self-defined bus, for according to demand, corresponding function bus being added.
Preferably, the self-defined bus includes:
RS-485 bus, as local bus, for the order and action signal biography between each functional module and main control module
It send；
M-LVDS bus, the high-speed transfer for each intermodular data；
Hard firing line improves the real-time of communication for using hard trigger mechanism.
Preferably, the RS-485 bus includes two-way RS-485 communication interface, wherein all the way for main control module and
To realize the scheduling to each module, another way is used for the passback of test data to realize master for the transmission of each functional module internal command
Control processing, calculating and analysis of the module to test data.
Preferably, the voltage that the power bus provides are as follows:+15V, -15V, 5V, 27V and 56V.
Preferably, the network-bus further includes interchanger, is realized using chip I P178CH and chip 20PT1024X；
Chip I P178CH, for providing the network connection of remote computer and embedded computer and modules；
Chip 20PT1024X, for by IP178CH chip output difference voltage carry out voltage transformation be isolated, be convenient for not
With the network connection of intermodule.
Preferably, the open bus further includes Timing Signal bus, for making each module possess unified clock
To carry out time unification and timing function.
Preferably, the M-LVDS bus realizes that data-driven receives using chip DS91C176.
Above-mentioned technical characteristic may be combined in various suitable ways or be substituted by equivalent technical characteristic, as long as can reach
To the purpose of the present invention.
The beneficial effects of the present invention are, the present invention can using embedded technology and computer technology as core, with DSP,
The high performance device such as ARM, single-chip microcontroller and FPGA constructs self-defined bus, independence with higher, and modules can be according to
Specific military testing requirement, customized bus architecture save resource, can be by environmental test, while equipment can be improved
The localization rate of parts and components.
Detailed description of the invention
Fig. 1 is the schematic illustration of the customized serial open bus in the specific embodiment of the invention.
Fig. 2 is the schematic illustration of 8 port switch mode；
Fig. 3 is chip I P178CH output interface schematic illustration；
Fig. 4 is chip 20PT1024X internal structure chart.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art without creative labor it is obtained it is all its
His embodiment, shall fall within the protection scope of the present invention.
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be further explained below with reference to the attached drawings and specific examples, but not as the limitation of the invention.
Embodiment is described with reference to Fig. 1, the customized serial open bus of one kind described in present embodiment, this implementation
The open bus of mode is used to complete the communication between main control module and each functional module, the main control module of present embodiment
The open bus of present embodiment includes: that reset bus, power bus, network-bus and one or more are made by oneself
Adopted bus；
Reset bus makes all modules be restored to initial shape in the same time for issuing unified instruction to each module
State value postpones with minimum resetting time between module；
Power bus connects to power supply together, for providing required voltage for each module；So power module can mention
For supply voltages all on power bus, power bus and each module make each unit module by the way of direct-connected
Possess identical power supply, be actually allocated to required different voltages on disparate modules, is turned by the supply voltage in each module
Parallel operation part is converted, power bus offer+15V, -15V, 5V, 27V, 56V.
Network-bus is also used to individually debug certain module for providing network connection for each module；
Self-defined bus, for according to demand, corresponding function bus being added.
The composition of self-defined bus is not fixed, other buses can be added according to testing requirement.Therefore, present embodiment
Bus be it is open, this need to provide convenience for the Function Extension in user's later period.
In preferred embodiment, the self-defined bus of present embodiment includes RS-485 bus, M-LVDS bus and hard triggering
Line；RS-485 bus, as local bus, for the order and action signal transmission between each functional module and main control module；
The RS-485 bus of present embodiment uses IL485 as electrical level transferring chip, HDLC protocol, transmission rate setting
For 2Mb/s, 4 frame heads, 4 postambles take 6 line systems, data just, data minus, clock just, clock is negative, Communication Control just, Communication Control
It is negative.M-LVDS bus, the high-speed transfer for each intermodular data；
Present embodiment receives chip using DS91C176 data-driven, which can be to be up to the clock frequency of 100MHz
And the data transmission rate driving of up to 200Mb/s up to 32 loads.Equally use 6 line systems, HDLC protocol, transmission rate setting
For 40Mb/s.
Hard firing line improves the real-time of communication for using hard trigger mechanism.It is higher for certain pairs of requirement of real-time
Application, joined rigid line trigger mechanism in open bus.Other unit modules are requested to cooperate with work using data communication
The mode of work is not obviously able to satisfy to the higher occasion of requirement of real-time.In the present embodiment, 16 hard triggerings are set altogether
Line copes with the higher application of requirement of real-time by this 16 hard firing lines.
In preferred embodiment, RS-485 bus includes two-way RS-485 communication interface, wherein all the way for main control module and
To realize the scheduling to each module, another way is used for the passback of test data to realize master for the transmission of each functional module internal command
Control processing, calculating and analysis of the module to test data.
In preferred embodiment, the network-bus of present embodiment further includes interchanger, using chip I P178CH and chip
20PT1024X is realized；
Chip I P178CH, for providing the network connection of remote computer and embedded computer and modules；
Chip 20PT1024X, for by IP178CH chip output difference voltage carry out voltage transformation be isolated, be convenient for not
With the network connection of intermodule.
Network-bus needs to design interchanger and is forwarded to teledata as exclusive bus.Switch module is direct
Integrated in backboard, the exchanger chip used is IP178CH, and functional characteristics is as follows:
1) router and switch function is supported to configure；
2) MAC Address of 1K is supported；
3) operating mode auto negotiation and port automatic turning are supported；
4) exterior arrangement chip is supported to carry out functional configuration.
There are three types of modes for the functional configuration of chip I P178CH and control: by pull-up or pull down resistor, configuration chip draws
Foot level；By MII/RMII interface, ppu accesses MII register using SMI interface, carries out chip controls and pipe
Reason；By configuring chip EEPROM, chip can read eeprom chip content, register in configuration slice when starting automatically.According to
Exchanger chip IP178CH is configured as 8 port switch mode and is used for remote computer and embedding assembly by actual demand
The network connection of machine and modules.In order to which Function Extension can be mentioned using two panels IP178CH chip by port interconnected
For the network connection on 14 tunnels.Wherein two-way is respectively used to the connection of remote computer and embedded computer, 8 port switch mould
Formula is as shown in Fig. 2, MAC8 is not used.For configuration mode using directly configuring to chip pin, configuration content is as shown in table 1.
Other pins are set as default mode, and chip can be achieved with the function of 8 port switch after energization.
1 port of table configures content
Signal passes through the phy interface input and output of chip I P178CH, in order to make can to interconnect between distinct device, uses
Network transformer carries out differential voltage conversion, while the network equipment can be isolated.Network transformer chip uses
20PT1024X, every transformer support the transmitting-receiving of two road networks.Wherein the design of two-way is as shown in Figure 3.The output of IP178CH chip
Differential voltage on the basis of AVCC, by network transformer 20PT1024X carry out voltage transformation be isolated, transformer export can
Directly it is connected with RJ45 socket, or is connected to other network equipments.Network transformer 20PT1024X internal structure such as Fig. 3
It is shown.
Every monolithic network transformer supports the transmitting-receiving of two-way network signal, and IEEE802.3u and ANSI X3.263 is supported to mark
Standard, symmetrical TX and RX interface support port automatic turning, and transmission rate meets 10/100M Ethernet demand.
In preferred embodiment, open bus further includes Timing Signal bus, for making each module possess unified clock
To carry out time unification and timing function.
Although describing the present invention herein with reference to specific embodiment, it should be understood that, these realities
Apply the example that example is only principles and applications.It should therefore be understood that can be carried out to exemplary embodiment
Many modifications, and can be designed that other arrangements, without departing from spirit of the invention as defined in the appended claims
And range.It should be understood that different appurtenances can be combined by being different from mode described in original claim
Benefit requires and feature described herein.It will also be appreciated that the feature in conjunction with described in separate embodiments can be used
In other described embodiments.
Claims (7)
1. a kind of customized serial open bus, which is characterized in that the open bus is for completing main control module and each
Communication between functional module, the open bus include: reset bus, power bus, network-bus and one or more
Self-defined bus；
Reset bus makes all modules return to original state value in the same time for issuing unified instruction to each module；
Power bus connects to power supply together, for providing required voltage for each module；
Network-bus is also used to individually debug certain module for providing network connection for each module；
Self-defined bus, for according to demand, corresponding function bus being added.
2. the customized serial open bus of one kind according to claim 1, which is characterized in that the self-defined bus packet
It includes:
RS-485 bus, as local bus, for the order and action signal transmission between each functional module and main control module；
M-LVDS bus, the high-speed transfer for each intermodular data；
Hard firing line improves the real-time of communication for using hard trigger mechanism.
3. the customized serial open bus of one kind according to claim 2, which is characterized in that the RS-485 bus packet
Two-way RS-485 communication interface is included, wherein the transmission for main control module and each functional module internal command is all the way to realize to each
The scheduling of module, another way are used for the passback of test data to realize processing, calculating and analysis of the main control module to test data.
4. the customized serial open bus of one kind according to claim 1, which is characterized in that the power bus provides
Voltage are as follows:+15V, -15V, 5V, 27V and 56V.
5. the customized serial open bus of one kind according to claim 1, which is characterized in that the network-bus also wraps
Interchanger is included, is realized using chip I P178CH and chip 20PT1024X；
Chip I P178CH, for providing the network connection of remote computer and embedded computer and modules；
Chip 20PT1024X, for by IP178CH chip output difference voltage carry out voltage transformation be isolated, convenient for different moulds
Network connection between block.
6. the customized serial open bus of one kind according to claim 1, which is characterized in that the open bus is also
Including Timing Signal bus, time unification and timing function are carried out for making each module possess unified clock.
7. the customized serial open bus of one kind according to claim 2, which is characterized in that the M-LVDS bus is adopted
Realize that data-driven receives with chip DS91C176.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903646.9A CN108984458B (en) | 2018-08-09 | 2018-08-09 | Self-defined serial open type bus |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903646.9A CN108984458B (en) | 2018-08-09 | 2018-08-09 | Self-defined serial open type bus |
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| CN108984458A true CN108984458A (en) | 2018-12-11 |
| CN108984458B CN108984458B (en) | 2021-10-29 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993015459A1 (en) * | 1992-02-03 | 1993-08-05 | Micro Industries | Live insertion of computer modules |
| CN1279429A (en) * | 1999-06-23 | 2001-01-10 | 日本电气株式会社 | Circuits and method for making bus reset reliably and irrelevant to length of cable |
| CN1471007A (en) * | 2002-07-26 | 2004-01-28 | 赫扬科技股份有限公司 | USB direct on-line display switching apparatus and method |
| CN101690019A (en) * | 2007-07-06 | 2010-03-31 | 默勒有限公司 | System and method for controlling bus-networked devices via an open field bus |
-
2018
- 2018-08-09 CN CN201810903646.9A patent/CN108984458B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1993015459A1 (en) * | 1992-02-03 | 1993-08-05 | Micro Industries | Live insertion of computer modules |
| CN1279429A (en) * | 1999-06-23 | 2001-01-10 | 日本电气株式会社 | Circuits and method for making bus reset reliably and irrelevant to length of cable |
| CN1471007A (en) * | 2002-07-26 | 2004-01-28 | 赫扬科技股份有限公司 | USB direct on-line display switching apparatus and method |
| CN101690019A (en) * | 2007-07-06 | 2010-03-31 | 默勒有限公司 | System and method for controlling bus-networked devices via an open field bus |
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Denomination of invention: A self-defined serial open bus Effective date of registration: 20230106 Granted publication date: 20211029 Pledgee: Industrial Bank Co.,Ltd. Harbin Branch Pledgor: Harbin nuoxin measurement and Control Technology Co.,Ltd. Registration number: Y2023230000007 |
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Denomination of invention: A custom serial open bus Granted publication date: 20211029 Pledgee: Industrial Bank Co.,Ltd. Harbin Branch Pledgor: Harbin nuoxin measurement and Control Technology Co.,Ltd. Registration number: Y2024230000016 |