CN205622646U - Large -scale road maintaining mechanical network control system - Google Patents

Abstract

The utility model discloses a large -scale road maintaining mechanical network control system, include: 1~n bottom a module, 1~t network module to and 1~m display module, realize the interconnection through fieldbus network between each module. The bottom module is including the power module, pulse identification module, main digital input module, gateway module, main analog input module and the main digital output module that constitute the communication backbone network to and extension module, analog input extension module and digital output extension module are inputed to the digital quantity of constituteing communication IO subnet. Communication IO subnet any one or several kinds of module expand in by main digital input module, gateway module, main analog input module, main digital output module. The utility model discloses can solve that current system expansion input/output point cost is higher, the system network architecture secondary founds complicacy and the not high technical problem of hardware price / performance ratio.

Description

A kind of large-scale maintenance machinery network control system

Technical field

This utility model relates to railway engineering mechanical field, especially relates to a kind of large-scale maintenance machinery based on two-stage CAN network 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 this utility model application for the applicant and south, the Zhuzhou car epoch limited public affairs of electric share Take charge of in application on 03 14th, 2012, and on 04 23rd, 2014 bulletins, notification number was the invention of CN102650878B Patent " a kind of large-scale maintenance machinery dcs and method for designing thereof ".Large-scale maintenance machinery distribution in this patent of invention Formula control system have employed network structure based on primary network station control system, as shown in Figure 1.In fig. 1, one-level net Network control system have employed the bottom module 1 n the bottom module to bottom module n, and from display module 1 to display module M the display module of m, and between modules, use fieldbus to interconnect.Bottom module includes power module, pulse The network control module such as identification module, gateway module and digital quantity input module, Analog input mModule, digital output module. As shown in Figure 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.

Utility model content

In view of this, the purpose of this utility model is to provide a kind of large-scale maintenance machinery network control system, it is possible to solve existing The system extension input and output point that large-scale maintenance machinery network control system exists is relatively costly, system network architecture secondary builds multiple The technical problem that miscellaneous and hardware cost performance is the highest.

In order to realize above-mentioned utility model purpose, this utility model specifically provides a kind of large-scale maintenance machinery network control system Technic relization scheme, a kind of large-scale maintenance machinery network control system, including: the bottom module of 1～n, the network of 1～t Module, and the display module of 1～m, realize interconnection by fieldbus networks between modules.Described bottom module bag Include power module, pulse recognition module, main digital quantity input module, gateway module, main Analog input mModule, main digital quantity Output module, digital quantity input expansion module, analog input expansion module and digital output expansion module.Described power supply mould Block, pulse recognition module, display module, main digital quantity input module, gateway module, main Analog input mModule and main numeral Amount output module composition communication backbone network.Described digital quantity input expansion module, analog input expansion module, digital output Expansion module forms, with mixed-media network modules mixed-media, the I/O subnet that communicates.Described communication I/O subnet is by described main digital quantity input module, gateway Any one or a few module in module, main Analog input mModule, 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 above-mentioned this utility model provides, have the most useful Effect:

(1) this utility model is owing to extending network control module so that two-stage fieldbus networks adds expansion module function, I.e. can the most at any time the input and output point of network control module be extended easily；

(2) the communication backbone network network structure holding of this utility model two-stage CAN network is stablized constant, and the increase and decrease of node can Only communication I/O subnet is carried out, it is to avoid the software modification of master network, reduce producer and the service of user and maintenance cost；

(3) this utility model all comes into operation due to the two-way CAN communication interface of one side master network control module, another Aspect extended network control module cutting partial function and only retain major function, and control strategy, arithmetic, logic etc. are multiple Miscellaneous computing all concentrates on and carries out in the master network control module of this module place I/O Subnetwork connection so that main, extended network control The hardware capabilities of molding block is all not fully exerted, without the idle waste of hardware resource；

(4) this utility model is due to the master network control module that existing size is relatively big, configuration is stronger, has again that size is little, configuration warp The extended network control module that Ji is suitable for so that two-stage CAN network can need to carry out leading according to large-scale maintenance machinery function, The reasonably optimizing collocation of extended 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 this utility model embodiment or technical scheme of the prior art, below will be to embodiment or existing In technology description, the required accompanying drawing used is briefly described.It should be evident that the accompanying drawing in describing below is only this practicality Some novel embodiments, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to Other embodiment is obtained according to these accompanying drawings.

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 this utility model a kind of detailed description of the invention of large-scale maintenance machinery network control system；

Fig. 4 is the system architecture diagram of this utility model a kind of detailed description of the invention of large-scale maintenance machinery network control system；

Fig. 5 is the system structure composition signal of this utility model a kind of detailed description of the invention of large-scale maintenance machinery network control system Figure；

Fig. 6 is the system structure composition signal of this utility model large-scale maintenance machinery network control system another kind detailed description of the invention Figure；

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 this utility model embodiment, technical scheme and advantage clearer, implement below in conjunction with this utility model Accompanying drawing in example, carries out clear, complete description to the technical scheme in this utility model embodiment.Obviously, described reality Executing example is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, All other embodiments that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into this practicality Novel protected scope.

As shown in accompanying drawing 3 to accompanying drawing 6, give the specific embodiment of this utility model large-scale maintenance machinery network control system, The utility model is described in further detail with specific embodiment below in conjunction with the accompanying drawings.

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 this utility model using CAN, but Can also FF, Lonworks, DeviceNet, PROFIBUS, HART, CC-Link, WorldFIP, INTERBUS etc. other Fieldbus completes technical solutions of the utility model as communication bus.

The above-mentioned specific embodiment of this utility model propose a kind of by backbone network and I/O subnet form based on two-stage CAN network Large-scale maintenance machinery network control system, it is achieved that to large-scale maintenance machinery traveling, the decentralised control of operation function.Wherein, main Dry net is made up of master network control module, power module 101, pulse recognition module 102, gateway module 105 etc..I/O subnet It is made up of extended network control module, mixed-media network modules mixed-media 2 etc..This utility model large-scale maintenance machinery network control system is due to existing Size is relatively big and configures powerful master network control module, has again size little and configures economic and practical extended network control module, Solving prior art employing primary network station structure can only be by increasing relatively costly and that volume is bigger analog input, digital quantity The network control modules such as input, digital output extend system input and output point quantity, it is impossible to enter with regard to existing network control module The technical problem of row input and output point extension.This utility model, due to two-level network structure, solves prior art along with network control The increase of molding number of blocks causes communication network structure to change and cause network control module bottom software to need to do more repairing Changing, system network architecture secondary builds and after-sale service becomes the technical problem such as loaded down with trivial details.This utility model can be by existing owing to having The master network control module that interface is extended, solves a part of interface function of network control module in prior art and does not obtain The technical problem used and cause module hardware ability not to be not fully exerted.This utility model is based on two-stage CAN network big Type road maintainance machinery network control system has that capacity of resisting disturbance is strong, fast response time, cost are relatively low, hardware utilization is high, system Flexible configuration, versatility advantages of higher, it is adaptable to all vehicles in large-scale maintenance machinery field.Additionally, main digital quantity input mould The master network control modules such as block 104, main digital output module 107, main Analog input mModule 106 support visual programming skill Art, and expansible communication I/O subnet based on CAN, therefore have the feature that function expansibility is high.Owing to digital quantity is defeated Enter expansion module 110, digital output expansion module 112, analog input expansion module 111 are sent out with network sensor, electronics The communication I/O subnet that the mixed-media network modules mixed-medias 2 such as motivation speed regulator are built into is by main digital quantity input module 104, main digital output mould The master network control module extensions such as block 107, main Analog input mModule 106, the data in communication I/O subnet have passed through major network The filtration of network control module, therefore decreases the data traffic in communication backbone network, reduces the bus occupation rate of communication backbone network, Improve the response time of system.

By implementing the technical scheme of the large-scale maintenance machinery network control system that this utility model specific embodiment describes, it is possible to produce Raw following technique effect:

(1) the large-scale maintenance machinery network control system that this utility model specific embodiment describes controls mould owing to extending network Block so that two-stage fieldbus networks adds expansion module function, i.e. can defeated to network control module the most at any time Enter output point to extend easily；

(2) the large-scale maintenance machinery network control system that this utility model specific embodiment describes uses two-stage CAN network knot 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 major network The software modification of network, reduces producer and the service of user and maintenance cost；

(3) the large-scale maintenance machinery network control system that this utility model specific embodiment describes is due to one side master network control mould The two-way CAN communication interface of block all comes into operation, on the other hand extended network control module cutting partial function and only protect Stay major function, and the complex calculation such as control strategy, arithmetic, logic are all concentrated on and this module place I/O Subnetwork connection Master network control module is carried out so that main, the hardware capabilities of extended network control module is all not fully exerted, and provides without hardware The idle waste in source；

(4) the large-scale maintenance machinery network control system that this utility model specific embodiment describes is owing to existing size is relatively big, configuration Stronger master network control module, has again that size is little, configure economic and practical extended network control module so that two-stage CAN is total Gauze network can need to carry out leading according to large-scale maintenance machinery function, the reasonably optimizing collocation of extended network control module, fully The input cost that product uses is reduced while meeting 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 preferred embodiment of the present utility model, and this utility model is not made any pro forma restriction. Although this utility model discloses as above with preferred embodiment, but is not limited to this utility model.Any it is familiar with this area Technical staff, in the case of without departing from spirit of the present utility model and technical scheme, all may utilize the side of the disclosure above Technical solutions of the utility model are made many possible variations and modification by method and technology contents, or are revised as the equivalence of equivalent variations Embodiment.Therefore, every content without departing from technical solutions of the utility model, according to technical spirit of the present utility model to more than Any simple modification, equivalent, equivalence change and the modification that embodiment is done, all still falls within technical solutions of the utility model and protects The scope protected.

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.