CN104394218B - A kind of distributed parallel computing environment that power supply is provided by communication bus - Google Patents
A kind of distributed parallel computing environment that power supply is provided by communication bus Download PDFInfo
- Publication number
- CN104394218B CN104394218B CN201410697886.XA CN201410697886A CN104394218B CN 104394218 B CN104394218 B CN 104394218B CN 201410697886 A CN201410697886 A CN 201410697886A CN 104394218 B CN104394218 B CN 104394218B
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- Prior art keywords
- relay
- power supply
- acquisition module
- buses
- host computer
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Classifications
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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
- H04L12/40045—Details regarding the feeding of energy to the node from the bus
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
Abstract
The present invention proposes a kind of distributed parallel computing environment that power supply is provided by communication bus, which includes RS485 buses（1）, host computer（2）, DC power supply（3）And acquisition module（4）；Using programme-control timesharing switch method, charged using RS485 buses to the super capacitor of all acquisition modules of system, for communication when acquisition module power supply, avoid the dependence to power supply；Alternating current and direct current is not required, without often replacing battery, meets the demand of any environment and occasion；Additional power source is not required, it is not required that using RS485 differential voltages, the quantity using RS485 modules is unrestricted, can support the RS485 bus application systems of most 128 acquisition modules completely.
Description
Technical field
The present invention relates to a kind of distributed parallel computing environment more particularly to a kind of distributions that power supply is provided by communication bus
Acquisition system.
Background technology
There are application, structure chart such as Fig. 1 in many fields currently with the distributed parallel computing environment of RS485 bus designs
It is shown, including RS485 buses, host computer and acquisition module.Its operation principle is：Host computer（Generally use PC machine）Pass through
RS485 sends corresponding address to a certain acquisition module or certain several acquisition module and takes data command, when module's address meets
It is required that when, acquisition module is by multi-channel a/d converter gathered data and passes through RS485 buses to host computer transmission data.So
Will there are it is following the problem of：Each acquisition module is required for a DC power supply, and people also accordingly take following methods
It solves：
1）It using AC power, is converted by power supply, so as to provide direct current supply；
2）It is battery powered；
3）Increase by two direct current supply line power supplies；
4）Using RS485 there are differential voltage, a boosting integrated circuit is recycled to amplify this differential voltage, is supplied
It is used with system；
But above-mentioned solution method can not be applied to some occasions, such as under wild environment, acquisition module does not have nearby
Alternating current, therefore the above method 1）It can not use；If using the above method 2）It is battery powered, cost is higher, Er Qiegeng
Change trouble；Using the above method 3）Increase by two direct current supply line power supplies, in the case that at a distance, considerably increase cost；
And use the above method 4）When, when being connected to multiple acquisition modules in RS485 buses（Most application is all compared more）, can make
It is reduced into differential voltage, influences the correctness of the data using RS485 transmission, when using RS485 buses, number of nodes is for up to
To 128, so method 4）It can not use.
Therefore, the power supply mode for improving the bus distributed acquisition systems of RS485 is applied to place or environmental requirement tool
There is important meaning.The present invention proposes a kind of distributed parallel computing environment that power supply is provided by communication bus, using program control
The method of timesharing switching processed, a relay is set in host computer and acquisition module respectively, for DC power supply and RS485 communication letters
Number switching, realize and charge first with RS485 buses to the super capacitor of all acquisition modules of system, then pass through program control
Host computer processed and all acquisition module precise synchronizations, are acquired by acquisition module and result are uploaded to host computer.
The time control to be charged by program to acquisition module, acquisition module are used for the time of acquisition and each gather mould
Block uploads acquisition information and will be controlled very precisely to host computer etc. successively, so as to improve the efficiency of system；It is accurate synchronous
The information of each acquisition module transmission will not clash when control function is for ensureing to upload.
The content of the invention
The present invention provides a kind of distributed parallel computing environment that power supply is provided by communication bus, the side switched using timesharing
Method sets a relay respectively using in host computer and acquisition module, for the switching of DC power supply and RS485 communication signals,
And store DC power supply electric energy before communication using super capacitor, during communication its can be RS485 buses terminal device（Acquisition
Module）Power supply is provided, acquisition module oneself function of supplying power is realized, additional power source is not required.
To achieve the above object, the technical solution adopted by the present invention is：
The distributed parallel computing environment that the present invention provides power supply by communication bus includes RS485 buses, host computer, direct current
Source and multiple acquisition modules；The host computer includes the first relay, and first relay is used to control RS485 buses
Switching between being connected with the DC power supply and being connected with the RS485 interfaces of the host computer；The acquisition module is also
Including super capacitor, direct current stabilizer, the second relay and isolating diode, the direct current stabilizer, the isolation two
Pole pipe and the super capacitor are sequentially connected；The super capacitor is connected in parallel with the acquisition module；Described
Two relays cooperation, first relay, for control RS485 buses be connected with the direct current stabilizer and with it is described
Switching between the RS485 interfaces connection of acquisition module.
The direct current stabilizer is arranged to the front end of isolating diode, for stablizing the output of the DC power supply
Voltage, the isolating diode are arranged at the front end of the super capacitor, and the electric energy for preventing super capacitor is reversely lost in.
First relay for control the RS485 buses be connected with the DC power supply and with the host computer
RS485 interfaces connection between be switched to：First relay is controlled by an I/O mouth line of the host computer,
Before communication, first relay is switched to be connected with the DC power supply, realizes two differential signals of the RS485 buses
Line connects the positive and negative anodes of the DC power supply；In communication, first relay is switched to be connect with the RS485 of the host computer
Mouth connection realizes that two differential signal lines of the RS485 buses connect the RS485 interfaces of the host computer.
The second relay cooperation, first relay, for RS485 buses to be controlled to connect with direct current stabilizer
Being switched between connecing and being connected with the RS485 interfaces of acquisition module：Second relay is by the one of the acquisition module
Root I/O mouth lines control, and before communication, second relay is switched to be connected with the direct current stabilizer, realizes the direct current
Power supply passes through first relay, the RS485 buses, second relay, the direct current stabilizer and the isolation
Super capacitor described in diode pair charges, meanwhile, can also power to acquisition module makes acquisition module work；In communication, institute
State the second relay and be switched to and be connected with the RS485 interfaces of the acquisition module, realize the host computer by described first after
The communication of electric appliance, the RS485 buses and second relay and the acquisition module.
The host computer has relay control function, can realize and first relay is switched by I/O mouth lines
Control.
The acquisition module has relay control function, can realize and second relay is cut by I/O mouth lines
The control changed.
The acquisition module is several.
Compared with prior art, the invention has the advantages that：
1）The method that acquisition system of the present invention uses programme-control timesharing switching, is adopted using RS485 buses are all to system
Collection module super capacitor charge, for communication when acquisition module power supply, avoid the dependence to power supply.
2）Alternating current and direct current is not required in RS485 of the present invention, without often replacing battery, meets any environment and field
The demand of conjunction.
3）The present invention only needs to serve as direct current supply line and order wire using existing two RS485 bus time-sharings, is not required to
Want additional power source, it is not required that using RS485 differential voltages, the quantity using RS485 modules is unrestricted, can support completely
The RS485 bus application systems of most 128 acquisition modules.
Description of the drawings
Fig. 1 is the structure diagram of the distributed parallel computing environment of prior art RS485 bus designs；
Fig. 2 provides the structure diagram of the distributed parallel computing environment of power supply for the present invention by communication bus.
In figure：1st, RS485 buses, 2, host computer, the 21, first relay, 3, DC power supply, 4, acquisition module, 41, super
Capacitance, 42, direct current stabilizer, the 43, second relay, 5, isolating diode.
Specific embodiment
As shown in Fig. 2, the invention will be further described below in conjunction with the accompanying drawings.
Acquisition system of the present invention includes a host computer（PC machine）2nd, n acquisition module 4（128 can at most be reached）、
DC power supply 3, the first relay 21, the second relay 43, RS485 buses 1, direct current stabilizer 42, super capacitor 41 and isolation
Diode 5.
The DC power supply 3 exports+12V, and acquisition module 4 needs+5V to power, and each acquisition module has 8 A/D interfaces
（16）, each A/D, which is converted, needs 50ms, and RS485 communication baud rates are 9600, and system operation range is 10 minutes.
The course of work of system is：Each is arrived for 10 minutes, and host computer 2 controls the first relay 21, connects DC power supply
3, it is charged 2 minutes to n acquisition module 4 by RS485 buses, when each acquisition module 4 obtains+12V by RS485 buses 1
After direct current ,+5V the working powers of acquisition module needs are converted to by direct current stabilizer 42, while are charged to super capacitor 41；
When acquisition module obtains+5V working powers, startup timer simultaneously proceeds by data acquisition, and collection result deposit is carried
In RAM, 8 road A/D need 8 × 50ms=400ms altogether, far smaller than 2 minutes.2 minute charging time arrived, the control of host computer 2 first
Relay 21 connects RS485 buses 1 to host computer 2（PC machine）Communication interface, each acquisition module 4 is according to the timer of oneself
2 minutes are obtained to information, control relay 43 connects acquisition module 4 and arrives host computer 2（PC machine）Communication interface.In order to ensure
N acquisition module 4 uploads data will not generate conflict in RS485 buses 1, first using broadcast mode, to m acquisition module
4（m≤n）The order of a synchronous receiving data is sent, after each acquisition module 4 receives this order, according to each acquisition module 4
The number order that itself is set, passes sequentially through RS485 buses 1, with the rate of 9600 baud rates, all adopt is uploaded to host computer 2
The data collected.
Time calculates：Each acquisition module 4 has 8 16 A/D converters, altogether 16 bytes of occupancy, baud rate 9600, i.e.,
960 byte per second, 16 byte transmission need altogether<20ms times, 128 acquisition modules need the time altogether<3 seconds.In order to ensure
The reliability of data transmission was spaced, 128 seconds totally between each acquisition module 4 uploads data plus 1 second.Total time<3 points
Clock.
When each 4 timer of acquisition module was by 8 minutes, control relay 43 connects RS485 buses 1 to direct current stabilizer
42, it prepares for next work.
Utilize the present invention, it is only necessary to direct current supply line and order wire are served as using existing two RS485 bus time-sharings, it can
Alternating current and direct current power supply need not be provided to acquisition module 4, battery powered is not required, it is not required that need not be deposited using RS485
In differential voltage, a boosting integrated circuit is recycled to amplify this differential voltage, for acquisition module 4.Particularly apply
Field, no alterating and direct current, the occasion for replacing battery inconvenience.
Claims (6)
1. a kind of distributed parallel computing environment that power supply is provided by communication bus, which is characterized in that the system includes RS485 buses
（1）, host computer（2）, DC power supply（3）And acquisition module（4）；The host computer（2）Including the first relay（21）, institute
State the first relay（21）For controlling RS485 buses（1）In the DC power supply（3）With the host computer（2）RS485
Switching between interface；The acquisition module（4）Further include super capacitor（41）, direct current stabilizer（42）, the second relay
（43）And isolating diode（5）, the direct current stabilizer（42）, described isolating diode（5）With the super capacitor
（41）It is sequentially connected；The super capacitor（41 ）With the acquisition module（4）It is connected in parallel；Second relay
（43）Cooperation first relay（21）, for controlling RS485 buses in the direct current stabilizer（42）With the acquisition
Module（4）RS485 interfaces between switching；
First relay（21）For controlling the RS485 buses（1）With the DC power supply（3）Connection and with institute
State host computer（2）RS485 interfaces connection between be switched to：First relay（21）By the host computer（2）'s
A piece I/O mouth lines control, before communication, first relay（21）It is switched to and the DC power supply（3）Connection is realized
The RS485 buses（1）Two differential signal lines connect the DC power supply（3）Positive and negative anodes；In communication, described the
One relay（21）It is switched to and the host computer（2）RS485 interfaces connection, realize the RS485 buses（1）Two
Differential signal line connects the host computer（2）RS485 interfaces.
2. the distributed parallel computing environment according to claim 1 that power supply is provided by communication bus, it is characterised in that by institute
The direct current stabilizer stated（42）It is arranged at isolating diode（5）Front end, for stablizing the DC power supply（3）Output electricity
Pressure, the isolating diode（5）It is arranged at the super capacitor（41）Front end, for preventing super capacitor（41）Electric energy
Reversely it is lost in.
3. the distributed parallel computing environment that power supply is provided by communication bus according to claim 2, it is characterised in that described
Second relay（43）Cooperation first relay（21）, for controlling RS485 buses（1）With direct current stabilizer
（42）Connection and and acquisition module（3）RS485 interfaces connection between be switched to：Second relay（43）By institute
State the I/O mouth line control of acquisition module, before communication, second relay（43）It is switched to and the DC voltage-stabilizing
Device（42）Connection, realizes the DC power supply（3）Pass through first relay（21）, the RS485 buses, described second
Relay（43）, the direct current stabilizer（42）With the isolating diode（5）To the super capacitor（41）It charges, meanwhile,
It also can be to acquisition module（4）Power supply makes acquisition module work；In communication, second relay（43）Be switched to it is described
Acquisition module（4）RS485 interfaces connection, realize the host computer（2）Pass through first relay（21）, the RS485
Bus and second relay（43）With the acquisition module（4）Communication.
4. the distributed parallel computing environment according to claim 1 that power supply is provided by communication bus, it is characterised in that described
Host computer（2）With relay control function, can realize through I/O mouth lines to first relay（21）The control of switching
System.
5. the distributed parallel computing environment that power supply is provided by communication bus according to claim 3, it is characterised in that described
Acquisition module（4）With relay control function, can realize through I/O mouth lines to second relay（43）Switching
Control.
6. the distributed parallel computing environment that power supply is provided by communication bus according to claim 1 or 3, it is characterised in that
The acquisition module is several.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410697886.XA CN104394218B (en) | 2014-11-28 | 2014-11-28 | A kind of distributed parallel computing environment that power supply is provided by communication bus |
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|---|---|---|---|
| CN201410697886.XA CN104394218B (en) | 2014-11-28 | 2014-11-28 | A kind of distributed parallel computing environment that power supply is provided by communication bus |
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| CN104394218A CN104394218A (en) | 2015-03-04 |
| CN104394218B true CN104394218B (en) | 2018-05-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105352111B (en) * | 2015-10-10 | 2018-09-07 | 珠海格力电器股份有限公司 | Control method, device and air-conditioning mainboard |
| CN110034937A (en) * | 2018-01-12 | 2019-07-19 | 浙江宇视科技有限公司 | A kind of network cable power supply unit and system based on time-sharing multiplex |
| CN111327114B (en) * | 2020-03-11 | 2023-02-03 | 瑞纳智能设备股份有限公司 | MBUS bus power supply system and multi-slave node load balancing method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266434Y (en) * | 2008-10-14 | 2009-07-01 | 浙江大学 | Isolation type bus power supply communication system |
| CN103888332A (en) * | 2014-02-25 | 2014-06-25 | 深圳市瑞雷特电子技术有限公司 | Communication bus and communication nodes |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| EP1316898A3 (en) * | 2001-11-28 | 2004-11-10 | Siemens Aktiengesellschaft | Simple and secure method for locking data sets from CGI scripts |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201266434Y (en) * | 2008-10-14 | 2009-07-01 | 浙江大学 | Isolation type bus power supply communication system |
| CN103888332A (en) * | 2014-02-25 | 2014-06-25 | 深圳市瑞雷特电子技术有限公司 | Communication bus and communication nodes |
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