CN105871673A - Network control system of large road maintenance machine - Google Patents
Network control system of large road maintenance machine Download PDFInfo
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- CN105871673A CN105871673A CN201610341713.3A CN201610341713A CN105871673A CN 105871673 A CN105871673 A CN 105871673A CN 201610341713 A CN201610341713 A CN 201610341713A CN 105871673 A CN105871673 A CN 105871673A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/40006—Architecture of a communication node
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40221—Profibus
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Abstract
The invention discloses a network control system of a large road maintenance machine. The system comprises 1-n bottom modules, 1-t network modules and 1-m display modules, wherein the modules are interconnected through a field bus network; each bottom module comprises a power module, a pulse recognition module, a main digital input module, a gateway module, a main analog input module and a main digital output module which form a communication backbone network as well as a digital input extension module, an analog input extension module and a digital output extension module which form a communication I/O subnetwork. The communication I/O subnetwork is extended by any one or more of the main digital input module, the gateway module, the main analog input module and the main digital output module. The technical problems that the cost of extended input and output points of existing systems is higher, secondary construction of the system network structure is complicated and the cost performance of hardware is low can be solved.
Description
Technical field
The present invention relates to railway engineering mechanical field, especially relate to a kind of large-scale maintenance machinery network based on two-stage CAN network
Control system.
Background technology
As the core technology field of m of w engineering machinery, railway large-scale maintenance machinery electrical system is responsible for the various of full car
Operation and assist control task, be the brain of car load, directly commands the actions such as various operations, traveling and braking.From electrical control
For, it relates to simulate control, digital control, computer software, hardware, and electrical control, laser technology etc. are multiple
Aspect.
In the prior art, immediate with the present patent application for the applicant and Zhuzhou Nancheshidai Electric Co., Ltd in
Application on 03 14th, 2012, and on 04 23rd, 2014 bulletins, notification number was the patent of invention of CN102650878B
" a kind of large-scale maintenance machinery dcs and method for designing thereof ".The distributed control of large-scale maintenance machinery in this patent of invention
System processed have employed network structure based on primary network station control system, as shown in Figure 1.In fig. 1, primary network station control
System processed have employed the bottom module 1 n the bottom module to bottom module n, and from display module 1 to display module m's
M display module, and between modules, use fieldbus to interconnect.Bottom module includes power module, pulse recognition
The network control module such as module, gateway module and digital quantity input module, Analog input mModule, digital output module.As
Shown in accompanying drawing 2, for the principle of compositionality figure of primary network station control system.
Large-scale maintenance machinery Electrical System Network control system of the prior art uses distributed primary network station structure mostly, and it is main
Techniques below defect to be had:
(1) existing control system is owing to system network architecture is once built-up, just cannot not change communication network as required
In the case of carry out input and output point expansion, and can only come by increasing the bigger and relatively costly network control module quantity of volume
Extension input and output point, thus result in product and lack motility, and relatively costly；
(2) existing control system is along with the increase of network control module quantity, and system network architecture also there occurs change so that net
The bottom software of network control module needs to make more amendment, and the secondary of system network architecture builds and after-sale service becomes the most loaded down with trivial details,
Cause and research and develop and being significantly increased of after cost；
(3) in existing control system a part of interface function of network control module only in extension sensor, electronic engine speed governing
Use during device, and the most of the time does not come into operation, and causes the hardware capabilities of module not fully played.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of large-scale maintenance machinery network control system, it is possible to solve existing large-scale
Input and output point is relatively costly in the system extension that road maintainance machinery network control system exists, system network architecture secondary build complicated and
The technical problem that hardware cost performance is the highest.
In order to realize foregoing invention purpose, the present invention specifically provides the technology of a kind of large-scale maintenance machinery network control system and realizes
Scheme, a kind of large-scale maintenance machinery network control system, including: the bottom module of 1～n, the mixed-media network modules mixed-media of 1～t, with
And the display module of 1～m, realize interconnection by fieldbus networks between modules.Described bottom module includes power supply mould
Block, pulse recognition module, main digital quantity input module, gateway module, main Analog input mModule, main digital output module,
Digital quantity input expansion module, analog input expansion module and digital output expansion module.Described power module, pulse are known
Other module, display module, main digital quantity input module, gateway module, main Analog input mModule and main digital output module
Composition communication backbone network.Described digital quantity input expansion module, analog input expansion module, digital output expansion module and
Mixed-media network modules mixed-media composition communication I/O subnet.Described communication I/O subnet is by described main digital quantity input module, gateway module, main mould
Any one or a few module in analog quantity input module, main digital output module is extended.
Preferably, described power module uses insulating power supply, carries for the described bottom module of 5～6 on described fieldbus networks
For DC source.Described pulse recognition module produces synchronization pulse, makes the module in described fieldbus networks realize automatically
Identify.Described display module employing touch screen is as Man Machine Interface, and can store data.
Preferably, described main digital quantity input module includes 8 channel input signal interfaces, and each passage can gather outside 2 tunnels
Low and high level signal, and realize the exchange of Fieldbus Based communication trunk network data by CAN1 communication interface, pass through CAN2
Communication interface extends Fieldbus Based communication I/O subnet, is connected based on RS232 communication protocol by RS232 communication interface
External equipment, and can provide to described external equipment and have the controlled DC field working power of short-circuit protection function.
Preferably, described gateway module provides relaying for described fieldbus networks, for expanding the communication of described communication backbone network
Distance or expand described communication I/O subnet, often has more described in 16 described bottom modules increases by 1 in described communication backbone network
Gateway module.
Preferably, described main Analog input mModule includes 8 channel input signal interfaces, is used for gathering analog input signal,
And realize the exchange of Fieldbus Based communication trunk network data by CAN1 communication interface, extend base by CAN2 communication interface
In the communication I/O subnet of fieldbus, connect external equipment based on RS232 communication protocol by RS232 communication interface, and
DC field working power can be provided to described external equipment.
Preferably, described main digital output module includes 8 multi-channel output signal interfaces, can export and have real-time current monitoring
With high level signal or the pwm pulse signal of overcurrent protection function, and realized Fieldbus Based logical by CAN1 communication interface
Letter backbone network data exchange, is extended Fieldbus Based communication I/O subnet by CAN2 communication interface, is communicated by RS232
Interface connects external equipment based on RS232 communication protocol.
Preferably, described large-scale maintenance machinery network control system also includes network top resistance and network terminal resistance, described net
Network top resistance is connected with the module being positioned at network top, and described network terminal resistance is connected with the module being positioned at the network terminal, institute
State network top resistance, network terminal resistance for eliminating signaling reflex for fieldbus networks.
Preferably, described digital quantity input expansion module includes 8 channel input signal interfaces, and each passage can gather outside 2 tunnels
Portion's low and high level signal, realizes Fieldbus Based communication I/O sub-network data by CAN communication interface and exchanges, and can be outwards
Portion's equipment provides the controlled DC field working power with overcurrent protection function.
Preferably, described analog input expansion module includes 8 channel input signal interfaces, is used for gathering analog input letter
Number, realize Fieldbus Based communication I/O sub-network data by CAN communication interface and exchange, and tool can be provided to external equipment
There is the controlled DC field working power of overcurrent protection function.
Preferably, described digital output expansion module includes 8 multi-channel output signal interfaces, can export and have real-time current prison
Survey the high level signal with overcurrent protection function or pwm pulse signal, and realize Fieldbus Based by CAN communication interface
Communication I/O sub-network data exchange, and the controlled DC field working power with overcurrent protection function can be provided to external equipment.
By implementing the technical scheme of the large-scale maintenance machinery network control system that the invention described above provides, have the advantages that
(1) due to the fact that and extend network control module so that two-stage fieldbus networks adds expansion module function, i.e.
The most at any time the input and output point of network control module can be extended easily；
(2) the communication backbone network network structure holding of two-stage CAN network of the present invention is stablized constant, and the increase and decrease of node can be the most right
Communication I/O subnet is carried out, it is to avoid the software modification of master network, reduces producer and the service of user and maintenance cost；
(3) due to the fact that the two-way CAN communication interface of on the one hand master network control module all comes into operation, on the other hand
Extended network control module cutting partial function and only retain major function, and complicated to control strategy, arithmetic, logic etc. fortune
Calculate all to concentrate on and carry out in the master network control module of this module place I/O Subnetwork connection so that main, extended network controls mould
The hardware capabilities of block is all not fully exerted, without the idle waste of hardware resource；
(4) due to the fact that the master network control module that existing size is relatively big, configuration is stronger, have again that size is little, configuration economy is suitable
Extended network control module so that two-stage CAN network can according to large-scale maintenance machinery function need carry out leading, expanding
The reasonably optimizing collocation of exhibition network control module, reduces the input cost that product uses while fully meeting demand.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or prior art
In description, the required accompanying drawing used is briefly described.It should be evident that the accompanying drawing in describing below is only the one of the present invention
A little embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these
Accompanying drawing obtains other embodiment.
Fig. 1 is the system architecture diagram of prior art large-scale maintenance machinery primary network station Control System NetWork；
Fig. 2 is the system structure composition schematic diagram of prior art large-scale maintenance machinery primary network station Control System NetWork；
Fig. 3 is the structural principle schematic diagram of a kind of detailed description of the invention of large-scale maintenance machinery network control system of the present invention；
Fig. 4 is the system architecture diagram of a kind of detailed description of the invention of large-scale maintenance machinery network control system of the present invention；
Fig. 5 is the system structure composition schematic diagram of a kind of detailed description of the invention of large-scale maintenance machinery network control system of the present invention；
Fig. 6 is the system structure composition schematic diagram of large-scale maintenance machinery network control system another kind detailed description of the invention of the present invention；
In figure: 1-bottom module, 2-mixed-media network modules mixed-media, 101-power module, 102-pulse recognition module, 103-display module,
The main digital quantity input module of 104-, 105-gateway module, the main Analog input mModule of 106-, 107-main digital output module,
108-network top resistance, 109-network terminal resistance, 110-digital quantity input expansion module, 111-analog input expanded mode
Block, 112-digital output expansion module.
Detailed description of the invention
For the sake of quoting and understanding, by the technical term being used below, write a Chinese character in simplified form or abridge and be described below:
The abbreviation of MAIM: main Analog input mModule (Master Analog Input Module), is two-stage fieldbus network
A kind of general module of network communication；
The abbreviation of MDIM: main digital quantity input module (Master Digital Input Module), is two-stage fieldbus network
A kind of general module of network communication；
The abbreviation of MDOM: main digital output module (Master Digital Output Module), is two-stage fieldbus
A kind of general module of network service；
The abbreviation of EAIM: analog input expansion module (Expanded Analog Input Module), is that two-stage is on-the-spot total
A kind of general module of line network service；
The abbreviation of EDIM: digital quantity input expansion module (Expanded Digital Input Module), is that two-stage is on-the-spot total
A kind of general module of line network service；
The abbreviation of EDOM: digital output expansion module (Expanded Digital Output Module), is that two-stage is on-the-spot
A kind of general module of bus network communication；
The abbreviation of PM: power module (Power Module), is a kind of mould providing power supply for other non-electrical module on network
Block；
The abbreviation of DM: display module (Display Module), is a kind of man-machine interaction based on embedded OS programming
Module；
The abbreviation of GM: gateway module (Gateway Module) is a kind of communication distance for extended network or expands subnet
General module；
The abbreviation of CAN: control area net（CAN） (Control Area Network), is a kind of effectively support distributed AC servo system or real-time
The serial communication network controlled；
A kind of serial physical interface standards that RS232: EIA formulates；
The abbreviation of NS: network sensor (Network Sensor), is a kind of sensor supporting CAN communication agreement；
The abbreviation of EMR: electronic engine speed regulator (Electronic Motor Regulator), is generally used for engine speed
Control with distributive value, operating condition monitoring, communication and diagnosis etc.；
Fieldbus: a kind of industry data bus, is bottom data communication network in automatic field.
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, attached below in conjunction with in the embodiment of the present invention
Figure, carries out clear, complete description to the technical scheme in the embodiment of the present invention.Obviously, described embodiment is only this
A part of embodiment of invention rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The all other embodiments obtained under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in accompanying drawing 3 to accompanying drawing 6, give the specific embodiment of large-scale maintenance machinery network control system of the present invention, below
In conjunction with the drawings and specific embodiments, the invention will be further described.
As shown in accompanying drawing 3,4 and 5, the specific embodiment of a kind of large-scale maintenance machinery network control system, including: 1～n
The mixed-media network modules mixed-media 2 of bottom module 1,1～t, and the display module 103 of 1～m, by scene between modules
Bus (CAN) real-time performance interconnects, and wherein, n, t and m are positive integer.Bottom module 1 include power module 101,
Pulse recognition module 102, gateway module 105 and main digital quantity input module 104, main Analog input mModule 106, main numeral
Amount output module 107 master network control module such as grade, and digital quantity input expansion module 110, analog input expansion module 111
With digital output expansion module 112 extended network control module such as grade.Mixed-media network modules mixed-media 2 includes network sensor (NS) and electronics
The third party device of CAN communication supported by engine governors (EMR) etc..Power module 101, pulse recognition module 102,
Display module 103, main digital quantity input module 104, gateway module 105, main Analog input mModule 106 and main digital quantity are defeated
Go out module 107 and form communication backbone network.Digital quantity input expansion module 110, analog input expansion module 111, digital quantity are defeated
Go out expansion module 112 and form, with mixed-media network modules mixed-media 2, the I/O subnet that communicates.Communication I/O subnet by main digital quantity input module 104,
Any one or a few module in gateway module 105, main Analog input mModule 106, main digital output module 107 is carried out
Extension.
Power module 101 uses insulating power supply, provides+24V unidirectional current for 5～6 bottom modules 1 on fieldbus networks
Source.
Pulse recognition module 102 produces the synchronization pulse of 50Hz, makes the module in fieldbus networks realize automatically and identifies.
Display module (DM) 103 employing touch screen is as the Man Machine Interface of system, and can store data.
Main digital quantity input module (MDIM) 104 includes 8 channel input signal interfaces, and each passage can gather outside 2 tunnels
Low and high level signal, supports visual programming technique, and realizes backbone network data based on CAN by CAN1 communication interface
Exchange, by CAN2 communication interface extend communication I/O subnet based on CAN, by RS232 communication interface connect based on
The external equipment of RS232 communication protocol, and the controlled+24V DC field work with short-circuit protection function can be provided to external equipment
Make power supply.
Gateway module (GM) 105 provides relaying for CAN network, for expanding communication distance or the expansion of communication backbone network
Communication I/O subnet, often having more 16 bottom modules 1 in communication backbone network increases by 1 gateway module 105.
Main Analog input mModule (MAIM) 106 includes 8 channel input signal interfaces, be used for gathering ± 10.000V within
Analog input signal, supports visual programming technique, and realizes trunk netting index based on CAN by CAN1 communication interface
According to exchange, extend communication I/O subnet based on CAN by CAN2 communication interface, by RS232 communication interface linker
External equipment in RS232 communication protocol.In addition, each passage can provide ± 10.000V scene work to external equipment
Make power supply, wherein 7～8 passages can realize ± 10.000V or ± 15.000V work on the spot power supply signal output.
Main digital output module (MDOM) 107 includes 8 multi-channel output signal interfaces, supports visual programming technique, energy
Output has real-time current monitoring and the+24V high level signal of overcurrent protection function or pwm pulse signal, and is led to by CAN1
Letter interface realizes backbone network data based on CAN exchange, extends communication based on CAN by CAN2 communication interface
I/O subnet, connects external equipment based on RS232 communication protocol by RS232 communication interface.
Large-scale maintenance machinery network control system also includes network top resistance 108 and network terminal resistance 109, network top electricity
Resistance 108 is connected with the module being positioned at network top, and network terminal resistance 109 is connected with the module being positioned at the network terminal.Network begins
End resistance 108, network terminal resistance 109 are all the resistance of 120 ohm, for eliminating signaling reflex for fieldbus networks.
Digital quantity input expansion module (EDIM) 110 includes 8 channel input signal interfaces, and each passage can gather outside 2 tunnels
Portion's low and high level signal, realizes communication I/O sub-network data based on CAN by CAN communication interface and exchanges, and can be outwards
Portion's equipment provides the controlled+24V DC field working power with overcurrent protection function.
Analog input expansion module (EAIM) 111 includes 8 channel input signal interfaces, be used for gathering ± 10.000V within
Analog input signal, realize communication I/O sub-network data based on CAN by CAN communication interface and exchange, and can be to
External equipment provides the controlled+24V DC field working power with overcurrent protection function.
Digital output expansion module (EDOM) 112 includes 8 multi-channel output signal interfaces, can export and have real-time current prison
Survey+24V the high level signal with overcurrent protection function or pwm pulse signal, and realize total based on CAN by CAN communication interface
The communication I/O sub-network data exchange of line, and the controlled+24V DC field work with overcurrent protection function can be provided to external equipment
Make power supply.
Extended network control module is except can be in addition to being extended master network control module, it is also possible to directly from gateway module 105
Or support to be extended on the equipment of CAN communication.Can by gateway module 105, extended network control module and display module 103
To constitute a simple network control system, as shown in Figure 6.This system can realize gathering the function such as data and control equipment,
And simple in construction, with low cost, can be used for mininet product or remote subnetwork expands.
The specific embodiment of a kind of large-scale maintenance machinery Networked Control System Design based on said system, comprises the following steps:
S101: large-scale maintenance machinery network control system is set out according to vehicle control function to be applied and includes that digital quantity is defeated
Go out signal, digital quantity input signal, analog input signal in interior input/output signal kind and quantity；
S102: according to signal kinds and quantity and display module 103 in signal purposes configuration system, main digital quantity input module 104,
Main digital output module 107, main Analog input mModule 106, digital quantity input expansion module 110, digital output extend
Module 112, the quantity of analog input expansion module 111；
S103: according to display module in system 103, main digital quantity input module 104, main digital output module 107, main mould
Analog quantity input module 106, digital quantity input expansion module 110, digital output expansion module 112, analog input expanded mode
The quantity of the particular number configuration power module 101 of block 111；
S104: according to display module in system 103, main digital quantity input module 104, main digital output module 107, main mould
Analog quantity input module 106, the particular number of power module 101 configure the quantity of gateway module 105；
S105: the digital quantity input signal in system is distributed to main digital quantity input module 104 or digital quantity input expansion module
In 110, the digital output signal in system is distributed to main digital output module 107 or digital output expansion module 112
In, the analog input signal in system is distributed to main Analog input mModule 106 or analog input expansion module 111；
S106: the instrument in system is shown that signal, alarm indication are distributed to display module 103；
S107: write main digital quantity input module 104, main digital output module 107, main Analog input mModule 106 should
By program, it is achieved the logical relation of various input/output；
S108: write the top level application program of display module 103, it is achieved instrument signal and the display of alarm signal；
S109: write the bottom layer application program of display module 103, it is achieved defeated to main digital quantity input module 104, main digital quantity
Go out module 107, main Analog input mModule 106, digital quantity input expansion module 110, digital output expansion module 112 and
The control of analog input expansion module 111 and diagnostic operation.
Technical scheme is introduced as a example by on-scene communication bus by the above-mentioned specific embodiment of the present invention using CAN, but also may be used
With other scenes such as FF, Lonworks, DeviceNet, PROFIBUS, HART, CC-Link, WorldFIP, INTERBUS
Bus completes technical solution of the present invention as communication bus.
The above-mentioned specific embodiment of the present invention propose a kind of by backbone network and I/O subnet form based on two-stage CAN network large-scale
Road maintainance machinery network control system, it is achieved that to large-scale maintenance machinery traveling, the decentralised control of operation function.Wherein, backbone network
It is made up of master network control module, power module 101, pulse recognition module 102, gateway module 105 etc..I/O subnet is by expanding
The exhibition composition such as network control module, mixed-media network modules mixed-media 2.Large-scale maintenance machinery network control system of the present invention is bigger due to existing size
And configure powerful master network control module, there is again size little and configure economic and practical extended network control module, solving existing
Technology is had to use primary network station structure can only to input by analog input, the digital quantity that increase is relatively costly and volume is bigger, count
The network control modules such as word amount output extend system input and output point quantity, it is impossible to carry out inputting defeated with regard to existing network control module
Go out a technical problem for extension.Due to the fact that two-level network structure, solve prior art along with network control module quantity
Increasing and cause communication network structure to change and cause network control module bottom software to need to make more amendment, grid is tied
Structure secondary builds and after-sale service becomes the technical problem such as loaded down with trivial details.Due to the fact that the major network being extended by existing interface
Network control module, solves a part of interface function of network control module in prior art and is not used and cause module hardware
The technical problem that ability is not not fully exerted.Present invention large-scale maintenance machinery based on two-stage CAN network network control system
It is excellent to have that capacity of resisting disturbance is strong, fast response time, cost are relatively low, hardware utilization is high, system flexible configuration, versatility are high etc.
Point, it is adaptable to all vehicles in large-scale maintenance machinery field.Additionally, main digital quantity input module 104, main digital output mould
The master network control modules such as block 107, main Analog input mModule 106 support visual programming technique, and expansible based on CAN
The communication I/O subnet of bus, therefore has the feature that function expansibility is high.Due to digital quantity input expansion module 110, numeral
Amount output expansion module 112, analog input expansion module 111 and the network mould such as network sensor, electronic engine speed regulator
The communication I/O subnet that block 2 is built into is by main digital quantity input module 104, main digital output module 107, main analog input
Module 106 master network control module such as grade extends, and the data in communication I/O subnet have passed through the filtration of master network control module, because of
This decreases the data traffic in communication backbone network, reduces the bus occupation rate of communication backbone network, when improve the response of system
Between.
By implementing the technical scheme of the large-scale maintenance machinery network control system that the specific embodiment of the invention describes, it is possible to produce such as
Lower technique effect:
(1) the large-scale maintenance machinery network control system that the specific embodiment of the invention describes is owing to extending network control module, makes
Two-stage fieldbus networks adds expansion module function, i.e. can input and output to network control module the most at any time
Click on accommodating extension；
(2) the large-scale maintenance machinery network control system that the specific embodiment of the invention describes uses two-stage CAN network structure,
Communication backbone network network structure keeps stablizing constant, and communication I/O subnet can only be carried out by the increase and decrease of node, it is to avoid master network
Software modification, reduces producer and the service of user and maintenance cost；
(3) the large-scale maintenance machinery network control system that the specific embodiment of the invention describes is due to one side master network control module
Two-way CAN communication interface all comes into operation, on the other hand extended network control module cutting partial function and only retain master
Want function, and the complex calculation such as control strategy, arithmetic, logic are all concentrated on and the major network of this module place I/O Subnetwork connection
Network control module is carried out so that main, the hardware capabilities of extended network control module is all not fully exerted, not busy without hardware resource
Put waste；
(4) the large-scale maintenance machinery network control system that the specific embodiment of the invention describes is owing to existing size is relatively big, configuration is stronger
Master network control module, have again that size is little, configure economic and practical extended network control module so that two-stage CAN net
Network can need to carry out leading according to large-scale maintenance machinery function, the reasonably optimizing collocation of extended network control module, is fully meeting
The input cost that product uses is reduced while demand.
In this specification, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is and other embodiments
Difference, between each embodiment, identical similar portion sees mutually.
The above, be only presently preferred embodiments of the present invention, and the present invention not makees any pro forma restriction.Although this
Invention discloses as above with preferred embodiment, but is not limited to the present invention.Any those of ordinary skill in the art,
In the case of the spirit of the present invention and technical scheme, all may utilize the method for the disclosure above and technology contents to this
Bright technical scheme makes many possible variations and modification, or is revised as the Equivalent embodiments of equivalent variations.Therefore, every do not take off
From the content of technical solution of the present invention, the technical spirit of the foundation present invention is to any simple modification made for any of the above embodiments, equivalent
Replace, equivalence changes and modifies, and all still falls within the scope of technical solution of the present invention protection.
Claims (10)
1. a large-scale maintenance machinery network control system, it is characterised in that including: the bottom module (1) of 1～n, 1～
The mixed-media network modules mixed-media (2) of t, and the display module (103) of 1～m, realized by fieldbus networks between modules
Interconnection；Described bottom module (1) include power module (101), pulse recognition module (102), main digital quantity input module (104),
Gateway module (105), main Analog input mModule (106), main digital output module (107), digital quantity input expanding mould
Block (110), analog input expansion module (111) and digital output expansion module (112)；Described power module (101),
Pulse recognition module (102), display module (103), main digital quantity input module (104), gateway module (105), main mould
Analog quantity input module (106) and main digital output module (107) composition communication backbone network；Described digital quantity input expanding mould
Block (110), analog input expansion module (111), digital output expansion module (112) and mixed-media network modules mixed-media (2) composition
Communication I/O subnet；Described communication I/O subnet is by described main digital quantity input module (104), gateway module (105), main mould
Any one or a few module in analog quantity input module (106), main digital output module (107) is extended.
Large-scale maintenance machinery network control system the most according to claim 1, it is characterised in that: described power module (101)
Use insulating power supply, provide DC source for the described bottom module of 5～6 on described fieldbus networks (1)；Described arteries and veins
Rush identification module (102) and produce synchronization pulse, make the module in described fieldbus networks realize automatically and identify；Described aobvious
Show that module (103) uses touch screen as Man Machine Interface, and data can be stored.
Large-scale maintenance machinery network control system the most according to claim 1 and 2, it is characterised in that: described main digital quantity
Input module (104) includes 8 channel input signal interfaces, and each passage can gather the outside low and high level signal in 2 tunnels, and leads to
Cross CAN1 communication interface and realize the exchange of Fieldbus Based communication trunk network data, by the extension of CAN2 communication interface based on existing
The communication I/O subnet of field bus, connects external equipment based on RS232 communication protocol by RS232 communication interface, and can be to
Described external equipment provides the controlled DC field working power with short-circuit protection function.
Large-scale maintenance machinery network control system the most according to claim 3, it is characterised in that: described gateway module (105)
Relaying is provided, for expanding the communication distance of described communication backbone network or expanding described communication I/O for described fieldbus networks
Net, often having more 16 described bottom modules (1) in described communication backbone network increases by 1 described gateway module (105).
5. according to the large-scale maintenance machinery network control system according to any one of claim 1,2 or 4, it is characterised in that:
Described main Analog input mModule (106) includes 8 channel input signal interfaces, is used for gathering analog input signal, and leads to
Cross CAN1 communication interface and realize the exchange of Fieldbus Based communication trunk network data, by the extension of CAN2 communication interface based on existing
The communication I/O subnet of field bus, connects external equipment based on RS232 communication protocol by RS232 communication interface, and can be to
Described external equipment provides DC field working power.
Large-scale maintenance machinery network control system the most according to claim 5, it is characterised in that: described main digital output
Module (107) includes 8 multi-channel output signal interfaces, can export and have real-time current monitoring and the high level of overcurrent protection function
Signal or pwm pulse signal, and realize the exchange of Fieldbus Based communication trunk network data by CAN1 communication interface, pass through
CAN2 communication interface extends Fieldbus Based communication I/O subnet, is connected by RS232 communication interface and communicates based on RS232
The external equipment of agreement.
7. according to the large-scale maintenance machinery network control system according to any one of claim 1,2,4 or 6, it is characterised in that:
Described large-scale maintenance machinery network control system also includes network top resistance (108) and network terminal resistance (109), described net
Network top resistance (108) is connected with the module being positioned at network top, described network terminal resistance (109) be positioned at the network terminal
Module be connected, described network top resistance (108), network terminal resistance (109) for for fieldbus networks eliminate signal
Reflection.
Large-scale maintenance machinery network control system the most according to claim 7, it is characterised in that: the input of described digital quantity is expanded
Exhibition module (110) includes 8 channel input signal interfaces, and each passage can gather the outside low and high level signal in 2 tunnels, passes through
CAN communication interface realizes the exchange of Fieldbus Based communication I/O sub-network data, and can have stream guarantor to external equipment offer
The controlled DC field working power of protective function.
9. according to the large-scale maintenance machinery network control system according to any one of claim 1,2,4,6 or 8, its feature
It is: described analog input expansion module (111) includes 8 channel input signal interfaces, is used for gathering analog input letter
Number, realize Fieldbus Based communication I/O sub-network data by CAN communication interface and exchange, and tool can be provided to external equipment
There is the controlled DC field working power of overcurrent protection function.
Large-scale maintenance machinery network control system the most according to claim 9, it is characterised in that: described digital output
Expansion module (112) includes 8 multi-channel output signal interfaces, can export and have real-time current monitoring and the height of overcurrent protection function
Level signal or pwm pulse signal, and realize the exchange of Fieldbus Based communication I/O sub-network data by CAN communication interface,
And the controlled DC field working power with overcurrent protection function can be provided to external equipment.
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