CN106772090B - The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell - Google Patents
The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell Download PDFInfo
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- CN106772090B CN106772090B CN201611237505.5A CN201611237505A CN106772090B CN 106772090 B CN106772090 B CN 106772090B CN 201611237505 A CN201611237505 A CN 201611237505A CN 106772090 B CN106772090 B CN 106772090B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/367—Software therefor, e.g. for battery testing using modelling or look-up tables
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/382—Arrangements for monitoring battery or accumulator variables, e.g. SoC
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Abstract
The invention discloses the Analysis of Networking method of Monitored System of Industrial Storage Cell and Analysis of Networking systems, which comprises calculates acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of different network construction forms；The Monitored System of Industrial Storage Cell of above-mentioned different network construction forms is tested, the acquisition module joint number maximum value of test is obtained；Acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form is compared with the acquisition module joint number maximum value of test；When the error of the acquisition module joint number maximum value of calculating and the acquisition module joint number maximum value of test is within default error threshold, networking joint number searches the network construction form of Monitored System of Industrial Storage Cell corresponding to the smallest calculated acquisition module joint number maximum value of difference therewith according to demand.This method does not have to carry out test verifying in large quantities, reduces Networking Design cost using the acquisition module joint number maximum value of calculating as the theoretical foundation for the Monitored System of Industrial Storage Cell for designing new network construction form.
Description
Technical field
The present invention relates to the networkings of the technical field of Monitored System of Industrial Storage Cell more particularly to Monitored System of Industrial Storage Cell point
Analysis method and Analysis of Networking system.
Background technique
Monitored System of Industrial Storage Cell, which is mainly realized, monitors the battery-operated situation in data center machine room in real time, packet
The case where including battery voltage, temperature, internal resistance and battery current size.Monitored System of Industrial Storage Cell is mainly by XBM-R2100
Accumulator internal resistance acquisition module, XBM-G2100 intelligent gateway module and XBM-I2100 battery pack current acquisition module three parts structure
At.Existing Monitored System of Industrial Storage Cell is an intelligent gateway module, several current acquisition modules and internal resistance acquisition module
Network construction form, ideally, the acquisition module joint number maximum value which can access are 192.Acquisition module joint number is maximum
192 section of value, limits the promotion of Monitored System of Industrial Storage Cell networking performance.New group need to be carried out by increasing acquisition module joint number maximum value
The design of the Monitored System of Industrial Storage Cell of web form；And existing Networking Design does not have theoretical foundation, can only largely be tested into
Row verifying, carries out the higher cost of experiment test.
Therefore, the existing technology needs to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the above drawbacks of the prior art, providing accumulator monitoring system
The Analysis of Networking method and Analysis of Networking system of system are solved test to Design of battery monitor system in the prior art and be tested
The technical issues of higher cost of card.
The technical proposal for solving the technical problem of the invention is as follows:
A kind of Analysis of Networking method of ice storing time system, wherein the described method includes:
Step A, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of different network construction forms is calculated；
Step B, the Monitored System of Industrial Storage Cell of above-mentioned different network construction forms is tested, obtains the acquisition module section of test
Number maximum value；
Step C, it by acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form and surveys
The acquisition module joint number maximum value of examination is compared；
Step D, when the error of the acquisition module joint number maximum value of calculating and the acquisition module joint number maximum value of test is pre-
If when within error threshold, networking joint number searches the smallest calculated acquisition module joint number maximum value of difference therewith according to demand
The network construction form of corresponding Monitored System of Industrial Storage Cell.
The Analysis of Networking method of the ice storing time system, wherein the step A is specifically included:
A1, the Monitored System of Industrial Storage Cell for choosing several network construction forms；
A2, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of each network construction form is calculated.
The Analysis of Networking method of the Monitored System of Industrial Storage Cell, wherein the step A1 is specifically included:
A11, acquisition module node voltage formula is calculated according to the Monitored System of Industrial Storage Cell of existing network construction form, and analyze
Acquisition module node voltage minimum value influences the acquisition module joint number maximum value of Monitored System of Industrial Storage Cell out；
A12, determine that the parameter for influencing node voltage minimum value is acquisition module according to acquisition module node voltage formula
Number n, conducting electric current Ix, communication line equivalent resistance Rc；
A13, the network construction form that Monitored System of Industrial Storage Cell is determined by adjusting above three parameter.
The Analysis of Networking method of the Monitored System of Industrial Storage Cell, wherein by increasing system boxcar, adjust the first electricity
It hinders, the resistance value of 3rd resistor, adjusts the impedance of communication line to adjust the parameter.
The Analysis of Networking method of the ice storing time system, wherein when the Monitored System of Industrial Storage Cell is using intelligence
When gateway network construction form, system acquisition module joint number maximum value is limited to node minimum voltage；When the Monitored System of Industrial Storage Cell
Select an intelligent gateway add a system boxcar network construction form when, system acquisition module joint number maximum value be limited to be
System performance loop total current.
The Analysis of Networking method of the ice storing time system, wherein when the Monitored System of Industrial Storage Cell selects one
When intelligent gateway adds the network construction form of a system boxcar, the number of system acquisition module isCircuit total current
IbFor the current-carrying capacity of communication line in system, system acquisition module joint number maximum value is limited to selected communication line model.
The Analysis of Networking method of the ice storing time system, wherein the acquisition module joint number maximum value and survey of calculating
For the error of the acquisition module joint number maximum value of examination within default error threshold, presetting error threshold is 3%.
A kind of Analysis of Networking system of ice storing time system, wherein the system comprises:
Maximum value calculation module, acquisition module joint number is most in the Monitored System of Industrial Storage Cell for calculating different network construction forms
Big value；
Maximum value test module tests for the Monitored System of Industrial Storage Cell to above-mentioned different network construction forms, obtains and survey
The acquisition module joint number maximum value of examination；
Comparison module, for acquisition module joint number calculated in the Monitored System of Industrial Storage Cell of same network construction form is maximum
Value is compared with the acquisition module joint number maximum value of test；
Network construction form searching module, for working as the acquisition module joint number of the acquisition module joint number maximum value and test that calculate most
When the error range being worth greatly is within preset range, networking joint number searches the smallest acquisition module joint number of difference therewith according to demand
The network construction form of Monitored System of Industrial Storage Cell corresponding to maximum value.
The Analysis of Networking system of the ice storing time system, wherein the maximum value calculation module specifically includes:
Network construction form selection unit, for choosing the Monitored System of Industrial Storage Cell of several network construction forms；
Computing unit, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell for calculating each network construction form.
The Monitored System of Industrial Storage Cell Analysis of Networking system, wherein the network construction form selection unit specifically includes:
Subelement is analyzed, for calculating acquisition module node voltage according to the Monitored System of Industrial Storage Cell of existing network construction form
Formula, and analyze the acquisition module joint number maximum value of acquisition module node voltage minimum value influence Monitored System of Industrial Storage Cell；
Parameter determines subelement, influences node voltage minimum value for determining according to acquisition module node voltage formula
Parameter is number n, the conducting electric current I of acquisition modulex, communication line equivalent resistance Rc；
Subelement is chosen, for choosing the network construction form of Monitored System of Industrial Storage Cell by adjusting above three parameter.
The present invention provides the Analysis of Networking method of Monitored System of Industrial Storage Cell, when calculated acquisition module section in this method
The error of the acquisition module joint number maximum value of maximum value and test is counted when presetting within error threshold, according to demand networking joint number
The network construction form for searching Monitored System of Industrial Storage Cell corresponding to the smallest acquisition module joint number maximum value of difference therewith, by calculating
Theoretical foundation of the acquisition module joint number maximum value as the Monitored System of Industrial Storage Cell for designing new network construction form does not have to carry out a large amount of
Ground test verifying, reduces Networking Design cost.
Detailed description of the invention
Fig. 1 is the flow chart of Monitored System of Industrial Storage Cell Analysis of Networking method of the invention.
Fig. 2 a is the first equivalent circuit diagram on RX_O communication line of the invention.
Fig. 2 b is the second equivalent circuit diagram on RX_O communication line of the invention.
Fig. 2 c is the third equivalent circuit diagram on RX_O communication line of the invention.
Fig. 3 is the scatter plot of the node voltage of a-th of acquisition module of the invention.
Fig. 4 is the circuit diagram of RBUS communication bus of the invention.
Fig. 5 is optocoupler current-limiting resistance and rising edge failing edge time graph of the invention.
Fig. 6 is Monitored System of Industrial Storage Cell resistance parameter combinatory analysis table of the invention.
Fig. 7 is Monitored System of Industrial Storage Cell communication line impedance parameter analytical table of the invention.
Fig. 8 is Monitored System of Industrial Storage Cell network construction form one of the invention.
Fig. 9 is Monitored System of Industrial Storage Cell network construction form two of the invention.
Figure 10 is pair of Monitored System of Industrial Storage Cell acquisition module joint number maximum value theory analysis and actual measurement test of the invention
Compare table.
Figure 11 is the structural block diagram of the Analysis of Networking system of Monitored System of Industrial Storage Cell of the invention.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer and more explicit, right as follows in conjunction with drawings and embodiments
The present invention is further described.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and do not have to
It is of the invention in limiting.
The acquisition module joint number maximum value of existing Monitored System of Industrial Storage Cell limits networking performance, and acquisition module joint number
Maximum value is limited by the network construction form of Monitored System of Industrial Storage Cell again.By the networking for selecting suitable Monitored System of Industrial Storage Cell
Form can further promote networking performance.The present invention by comparing the acquisition module joint number calculated in Monitored System of Industrial Storage Cell most
The big acquisition module joint number maximum value being worth with test obtains the two error very little, and searching demand networking joint number, difference is minimum therewith
Calculating acquisition module joint number maximum value corresponding to Monitored System of Industrial Storage Cell network construction form.
Referring to Figure 1, Fig. 1 is the flow chart of the Analysis of Networking method of Monitored System of Industrial Storage Cell of the invention, specific steps
It is as follows:
Step A, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of different network construction forms is calculated；
Step B, the Monitored System of Industrial Storage Cell of above-mentioned different network construction forms is tested, obtains the acquisition module section of test
Number maximum value；
Step C, it by acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form and surveys
The acquisition module joint number maximum value of examination is compared；
Step D, when the error of calculated acquisition module joint number maximum value and the acquisition module joint number maximum value of test exists
When within default error threshold, networking joint number is searched corresponding to the smallest acquisition module joint number maximum value of difference therewith according to demand
Monitored System of Industrial Storage Cell network construction form.
Monitored System of Industrial Storage Cell by choosing different network construction forms is acquired the calculating of module joint number maximum value, institute
Step A is stated to specifically include:
Step 11, the Monitored System of Industrial Storage Cell for choosing several network construction forms.
Existing accumulator monitoring product sets ice storing time system group network form according to product field application scene,
For the network construction form of an intelligent gateway module, several current acquisition modules and electrical resistance collection module.The accumulator monitoring system
The key component circuit of system is an intelligent gateway module, n current acquisition module and electrical resistance collection module.To existing electric power storage
Pond monitoring system is analyzed, and the influence ginseng for influencing acquisition module joint number maximum value in existing Monitored System of Industrial Storage Cell is analyzed
The network construction form of Monitored System of Industrial Storage Cell is arranged according to the adjusting of affecting parameters for number.
Acquisition module node voltage formula is calculated according to the Monitored System of Industrial Storage Cell of existing network construction form, and analyzes and adopts
Collect the acquisition module joint number maximum value of Module nodes voltage minimum influence Monitored System of Industrial Storage Cell.To the Monitored System of Industrial Storage Cell
Key component circuit simplified, Monitored System of Industrial Storage Cell is reduced to the equivalent circuit on RX_O communication line.All modules
In the state of working normally, Monitored System of Industrial Storage Cell is reduced to the equivalent circuit on RX_O communication line, as shown in Figure 2 a, is
The first equivalent circuit diagram on RX_O communication line of the invention, Rc are the equivalent resistance of communication line, and Rx is each acquisition module
Equivalent resistance, V1-Vn are the practical voltage for accessing each acquisition module, and n is the quantity of acquisition module in equivalent current.The acquisition
The series resistance that resistance is made of fuse and first resistor R37 or fuse and second resistance R38 in module, in acquisition module
Selected fuse resistance Rf1 Ω of ≈, due to R37 >=Rf, R38 >=Rf, thus, it is believed that R37 ≈ RxOr R38 ≈ Rx。
As shown in Figure 2 b, be the second equivalent circuit diagram on further RX_O communication line of the invention, by Fig. 2 b it is found that
Ideally, V1=Vn, V2=Vn-1 ... ..., Va=Vn-a+1, wherein a is a-th of acquisition module, andIt can
Further, the equivalent circuit diagram on RX_O communication line is simplified, is on RX_O communication line of the invention as shown in Figure 2 c
Third equivalent circuit diagram.It is analyzed by Fig. 2 c it is found that under optical coupling secondary edges saturation conduction state, if flowing through the equivalent electricity of acquisition module
The electric current for hindering Rx is ix, then first acquisition module node voltage beSecond acquisition module section
Putting voltage isVBUS0Voltage is accessed for entire communication line, n is accumulator monitoring system
The joint number of acquisition module, i in systemxFor the electric current for flowing through acquisition module equivalent resistance Rx, Rc is the equivalent resistance of communication line.
A-th of acquisition module node voltage are as follows:
Further formula 1 can be simplified are as follows:
A and V are drawn out according to formula 2aBetween scatter plot, as shown in figure 3, be a-th of acquisition module section of the invention
The scatter plot of point voltage.From the figure 3, it may be seen that when a closer toThen VaIt is smaller, it is when acquisition module deviates intelligent gateway module
Interface is remoter, then the node voltage value of its acquisition is smaller.
The further circuit map analysis for passing through RBUS communication bus, Fig. 4 are the electricity of the RBUS communication bus in the present invention
Lu Tu derives the minimum value of the acquisition module node voltage in existing Monitored System of Industrial Storage Cell in conjunction with the circuit diagram.
In Monitored System of Industrial Storage Cell, when intelligent gateway module receives automatic addressing, the temperature inquiry, voltage of host computer
After the instructions such as inquiry, internal resistance inquiry and electric current inquiry, corresponding instruction can be broadcasted to communication line, is showed in RBUS bus at this time
There is the variation of low and high level for RX_O.
When RX_O is high level (12V), greater than the maximum threshold voltage 2.5V of metal-oxide-semiconductor, metal-oxide-semiconductor Q7 saturation conduction, MOS
The drain current of pipe Q7VBUS=12V, R38=100K Ω, then Id=0.12mA, at this point, optocoupler
PS2701 does not work.
When RX_O is low level (0V), at this point, metal-oxide-semiconductor Q7 is not turned on, if VBUS is greater than the maximum threshold voltage of metal-oxide-semiconductor
2.5V, then metal-oxide-semiconductor Q6 saturation conduction, optocoupler PS2701 work.The primary current of optocoupler PS2701R37=2.2K Ω, Vf=1.1V.Optocoupler drives primary side light emitting diode by primary current, in turn
Control the working condition of secondary side phototriode.
When the level on RX_O communication line is high level, in formula 2When on RX_O communication line
When level is low level, in formula 2In this system design circuit, V is takenf=1.1V, due to R37
Much smaller than R38, therefore, IdMuch smaller than i, when there is low level on RX_O communication line, meet the acquisition module of system normal communication
Node voltage VaMinimum value limits the maximum value of Monitored System of Industrial Storage Cell acquisition module joint number.
In conjunction with Fig. 4, the Monitored System of Industrial Storage Cell acquisition module node voltage minimum value of existing network construction form is calculated.Secondary marginal ray
The conducting electric current size i of quick triodecRelated with the working condition of phototriode, the working condition of phototriode includes full
With state and magnifying state.And primary current i influences the working condition of secondary side phototriode, primary side pair side directly drives pass
Connection is current transfer ratio CTR.
Ic0For the maximum conducting electric current of secondary side phototriode.As iCTR >=Ic0When, phototriode working condition is
Saturation state, phototriode is fully on, the conducting electric current size of secondary side phototriodeBecause
The voltage of RXD is 0V, thenAs iCTR < Ic0When, phototriode working condition is magnifying state, photosensitive three pole
Manage fully on, the conducting electric current size i of secondary side phototriodec=iCTR.
According to DC electrical characteristic it is found that secondary side conduction voltage drop maintains 0.8V or less and could be identified as by single-chip microcontroller pin
Low level is then identified as high level higher than 2V；If being in a uncertain state between 0.8V-2V.Make be
System realizes normal communication, and according to the requirement of TTL fiduciary level, input low level should be less than 1.2V.It is RXD≤1.2V, according toObtain RXD=VDD-ic×R36<=1.2V.In the circuit of this system, VDD=5V, R36=1K Ω,
It can then derive
By consulting PS2701 databook, the current transfer ratio curve graph of the optocoupler is obtained, primary current is in 3- at this time
The section 4mA, takes CTR=115%, obtains
According to the formula of primary currentDerive VBUS >=Vf+ 3.3 × R37, wherein Vf=
1.1V, R37=2.2K Ω, and then obtain the minimum value V of VBUS in theoretically this systemf+ i × R37=1.1+3.3*2.2=
8.37V。
In optocoupler work, and when metal-oxide-semiconductor Q6 saturation conduction, the minimum amount of voltage that of VBUS is Va, by primary side pair
Side relationship analysis takes Va=8.37V, wherein VBUS0=12V.The communication line of the 28AWG used in this system, 400mm, inquiry
The communication line resistance R of 400mm long can be obtained in " AWG current-carrying capacity inquiry table "c0=0.0908 Ω, then Rc=0.1816 Ω.AndIt enables(n is odd number) obtains n=191 by formula 2；It enables(n is even
Number), n=192 is obtained by formula 2, n is the number of acquisition module in Monitored System of Industrial Storage Cell.Comprehensive analysis, in existing system, 1
The system of intelligent gateway module, most multipotency connect 192 acquisition modules.
Determine that the parameter for influencing node voltage minimum value is of acquisition module according to acquisition module node voltage formula
Number n, conducting electric current Ix, communication line equivalent resistance Rc；By formula 2 it is found that
Number n, the conducting electric current i of acquisition modulex, communication line equivalent resistance RcThe node voltage that three parameters influence acquisition module is minimum
Value.
The network construction form of Monitored System of Industrial Storage Cell is determined by adjusting above three parameter.On in Monitored System of Industrial Storage Cell
It states three parameters to be adjusted, the node voltage for obtaining smaller acquisition module can then access more acquisition moulds in systems
Block, and being capable of normal communication.Main method of adjustment is that increase system boxcar, adjusting resistance values and replacement are more low-impedance
Communication line.It is individually analyzed in terms of three separately below.
A, increase system boxcar, make Monitored System of Industrial Storage Cell with multilink circuit form networking.
Increase system boxcar makes monitoring system with multilink circuit form networking, is increased by increasing system boxcar
Influence the number n of the acquisition module of system communication minimum node voltage.System group network joint number is at 192 or so, the prior art
In have reached the acquisition module joint number maximum value of Monitored System of Industrial Storage Cell, limit the further of Monitored System of Industrial Storage Cell performance
It is promoted.The quantity of Monitored System of Industrial Storage Cell acquisition module, system conversion can be increased in the system by increasing system boxcar
The practical connection separation of box is obtained by surveying.
B, first resistor, the resistance value of 3rd resistor are adjusted, two resistance values is calculated and combines carried out group-net communication
The quantity of maximum acquisition module analyzes the relationship between the quantity and resistance value of maximum acquisition module；
When the level on RX_O communication line is low level,Increase the resistance of first resistor R37
It is worth, then ixReduce, increases the communication allowance of system.If access acquisition module node voltage down to Q6 saturation conduction voltage,
It is Va=2.5V.If system remains to normal communication, with maximum communication acquisition module n >=192 calculating, as a≤96, lead to
Cross the available i of formula 2x≤11.24mA.11.24mA is the maximum current flowed through in each module in group network system,Obtain R37 >=0.97K Ω.Take the current transfer ratio CTR=135%, i of optocouplerx×
CTR=ic, and VDD-ic× R36=1.2, to obtain 3rd resistor R36 >=0.25K Ω.In conjunction with current system communication
Baud rate 9600bps analysis, period are T=104 μ s, only meet t when rising time, failing edge timer≤ 52 μ s and
tfThe system could normally identify high level when≤52 μ s, bent by the optocoupler current-limiting resistance of Fig. 5 and rising edge failing edge time
Line obtains 3rd resistor R36 while should meet R36≤3K Ω.At this point, according to VDD-ic× R36 >=0, derives ic≥
1.67mA, by consulting the current transfer ratio curve graph of optocoupler in PS2701 databook, CTR=90% is obtained
ByDerive R37≤5.89K Ω.
Adjust ixSize first resistor R37 and first resistor R36 should be made to meet
Common fixed carbon resister resistance value has 1K Ω, 1.2K Ω, 1.4K Ω, 1.5K Ω, 1.6K Ω, 1.8K within the scope of 1K Ω -6.5K Ω
Ω、2KΩ、2.2KΩ、2.4KΩ、2.7KΩ、3KΩ、3.2KΩ、3.3KΩ、3.6KΩ、3.9KΩ、4.3KΩ、4.7KΩ、
5.1KΩ、5.6KΩ。
First resistor R37 takes respectively: 2.2K Ω, 2.4K Ω, 2.7K Ω, 3K Ω, 3.2K Ω, 3.3K Ω, 3.6K Ω, 3.9K
Ω、4.3KΩ、4.7KΩ、5.1KΩ、5.6KΩ。
3rd resistor R36 takes respectively: 1K Ω, 1.2K Ω, 1.4K Ω, 1.5K Ω, 1.6K Ω, 1.8K Ω, 2K Ω, 2.2K
Ω,2.4KΩ,2.7KΩ,3KΩ；
According to relational expression in system,According to the first resistor R37 of selection,
The various combination of 3rd resistor R36 resistance, calculate can group-net communication acquisition module joint number maximum value.Such as Fig. 6 institute
Show, for Monitored System of Industrial Storage Cell resistance parameter combinatory analysis table in the present invention, according to table, theory calculates two limits of simple adjustment
Leakage resistance parameter is possible to realize 300 module networkings together.
C, the impedance of communication line is adjusted, the relationship between the quantity of maximum acquisition module and the impedance of communication line is analyzed.
The prior art selects 28AWG, the communication line of 400mm, and the impedance of the communication line is Rc=0.1816 Ω；And 26AWG,
The impedance of the communication line of 400mm is Rc=0.1024 Ω.Equally, according to the relational expression in system, as shown in Figure 7, it can be deduced that
Monitored System of Industrial Storage Cell communication line impedance parameter analytical table.According to the analytical table it is found that reducing the impedance of communication line can increase
The quantity of maximum acquisition module, the networking performance of lifting system.
Step 12 specifically includes: calculating acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of each network construction form.
When Monitored System of Industrial Storage Cell uses intelligent gateway network construction form, system maximum data acquisition module networking joint number is limited to node
Minimum voltage can pass through
Relational expression calculates the maximum value of system group network acquisition module joint number.
Such as: a gateway module, R36=1K Ω, R37=2.2K Ω are used, communication line is 28AWG communication line.According to
The minimum voltage V of optocoupler primary side pair frontier juncture system analysis egressa=8.37V can calculate accumulator monitoring system according to above formula
The maximum value of the system group network acquisition module joint number of system is 192.
When Monitored System of Industrial Storage Cell selects an intelligent gateway to add the network construction form of a system boxcar, system is most
Big data acquisition module networking joint number is limited to system performance loop total current.When system group network carries out automatic addressing, circuit is total
Electric current is Ia=50% × ix×n；When system normal communication, circuit total current Ib=50% × Ia.It obtainsTheoretical
The maximum value of system group network joint number can be calculated by the formula.
The output electric current I=4.2A specification of 12V Switching Power Supply used, takes 70% current margin I1=on gateway module
4.2*70%=2.94A.RJ11 terminal maximum carrying capacity I2=1.5A used in gateway module.The maximum carrying capacity of communication line can
With by inquiry " AWG current-carrying capacity inquiry table ", it is found that the maximum carrying capacity of 28AWG communication line is I3=0.362A, 26AWG is communicated
The maximum carrying capacity of line is I4=0.577A, and the maximum carrying capacity of 24AWG communication line is I5=0.921A.Circuit total current IbChoosing
Take the smallest current value in system, due to I1 > I2 > I5 > I4 > I3, in the system current-carrying capacity of communication line be in whole system most
Low current value, therefore, system group network joint number maximum value are limited to selected communication line model.
For example, add the network construction form of a system boxcar using an intelligent gateway module, R36=1K Ω, R37=2.2K
Ω, communication line are 28AWG communication line.At this point, Ib=I3=0.362A,Then n
=292.
It is above-mentioned to be merely given as two examples, it is not limited to the network construction form of above two Monitored System of Industrial Storage Cell, it can
According to the network construction form of the various combination of system boxcar, resistance and communication line type progress Monitored System of Industrial Storage Cell
It determines.
Step S2 is specifically included: being tested the Monitored System of Industrial Storage Cell of above-mentioned different network construction forms, is obtained test
Acquisition module joint number maximum value.It is only tested below by the Monitored System of Industrial Storage Cell of three kinds of network construction forms:
The first situation, 300 section accumulator internal resistance acquisition module+1 system of gateway module+1 boxcar+28AWG are logical
Believe line+R36 (1K Ω)+R37 (2.2K Ω)；
+ 1 second situation, 252 section accumulator internal resistance acquisition module gateway module+28AWG communication line+R36 (2.2K
Ω)+R37(3.3KΩ)；
The third situation ,+1 gateway module+26AWG communication line+R36 (1K Ω) of 251 section accumulator internal resistance acquisition module+
R37(2.2KΩ)；
The Monitored System of Industrial Storage Cell of the various network construction forms of selection is analyzed:
Actual test is carried out to the Monitored System of Industrial Storage Cell network construction form that the first situation is chosen.Increase system in systems
Boxcar, specific connection structure is as shown in figure 8, Fig. 8 is Monitored System of Industrial Storage Cell network construction form of the invention.It is by increasing
System boxcar increases the number n for influencing the acquisition module of the minimum node voltage of system communication.To the acquisition module of the system into
Row automatic addressing, battery calibration software successfully complete the addressing of 300 internal resistance acquisition modules and 1 current acquisition module,
It is communicated on computer room bodyguard normal.Test instruction is sent to the acquisition module in system, can normally obtain acquisition data.System carries out
When data acquire, RX_O, RXD, VBUS, PS2701+ of the 37th, 76, No. 115 acquisition module of grasping system are distinguished by oscillograph
Waveform diagram.When theoretically three nodes carry out data communication, minimum node voltage is respectively V37 reasons=10.1V, V76 reasons=9.4V,
V115 reasons=10.1V.
On No. 37 acquisition module, when receiving low level, the minimum test voltage of node is V37 survey=8.8V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1V, and PS2701- point minimum voltage is 0V, shows optical coupler
Part pair side is in magnifying state.RXD minimum voltage is 240mV, and communication is in normal condition.
On No. 76 acquisition module, when receiving low level, the minimum test voltage of node is V76 survey=7.8V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows optocoupler
Device pair side is in magnifying state.RXD minimum voltage is 560mV, and communication is in normal condition.
On No. 115 acquisition module, when receiving low level, the minimum test voltage of node is V115 survey=9V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows optocoupler
Device pair side is in magnifying state.RXD minimum voltage is 160mV, and communication is in normal condition.
Actual test is carried out to the Monitored System of Industrial Storage Cell network construction form that second situation is chosen.The network construction form with it is existing
Technology is identical, only has adjusted the resistance of R36, R37 of accumulator internal resistance acquisition module, the acquisition mould which can access
Block joint number standard theory maximum value is 258.Take R36=2.2K Ω, R37=3.3K Ω.According to the actual networking of progress shown in Fig. 9
Test, Fig. 9 is Monitored System of Industrial Storage Cell network construction form two of the invention.Automatic addressing, battery are carried out to system acquisition module
Calibration software successfully completes 252 internal resistance acquisition module addressings, communicates on computer room bodyguard normal.To the acquisition module in system
Test instruction is sent, acquisition data can be normally obtained.When system carries out data acquisition, pass through oscillograph grasping system the 5th, the
126, RX_O, RXD, VBUS, PS2701+ waveform diagram of No. 248 acquisition module.Theoretically three nodes carry out data communication
When, minimum node voltage is respectively V5 reasons=11.628V, V126 reasons=7.2V, V248 reasons=11.628V.
On No. 5 acquisition module, when receiving low level, the minimum test voltage of node is V5 survey=11.8V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows optocoupler
Device pair side is in magnifying state.RXD minimum voltage is 160mV, and communication is in normal condition.
On No. 126 acquisition module, when receiving low level, the minimum test voltage of node is V126 survey=5.8V, with
Calculated value is close.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows light
Coupling device pair side is in magnifying state.RXD minimum voltage is 1.76V, and 1.76V is uncertain in one between 0.8V-2V
State, communication is in normal condition when RXD minimum voltage is 1.76V in test.
On No. 248 acquisition module, when receiving low level, the minimum test voltage of node is V248 survey=11V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows optocoupler
Device pair side is in magnifying state.RXD minimum voltage is 160mV, and communication is in normal condition.
Actual test is carried out to the Monitored System of Industrial Storage Cell network construction form that the third situation is chosen.The network construction form with it is existing
Technology is identical, and the resistance of R36, R37 of accumulator internal resistance acquisition module remain unchanged, and system communications line is changed to 26AWG,
The acquisition module joint number standard theory maximum value that the system can access is 256.According to the actual networking test of progress shown in Fig. 9,
Fig. 9 is Monitored System of Industrial Storage Cell network construction form two of the invention.Automatic addressing is carried out to system acquisition module, battery calibration is soft
Part successfully completes 251 internal resistance acquisition module addressings, communicates on computer room bodyguard normal.Acquisition module in system is sent and is surveyed
Examination instruction can normally obtain acquisition data.When system carries out data acquisition, pass through oscillograph grasping system the 63rd, the 126th, the
RX_O, RXD, VBUS, PS2701+ waveform diagram of No. 189 acquisition modules.It is minimum when theoretically three nodes carry out data communication
Node voltage is respectively V63 reasons=8.98V, V126 reasons=7.97V, V189 reasons=8.98V.
On No. 63 acquisition module, when receiving low level, the minimum test voltage of node is V63 survey=8.4V, with reason
It is close by calculated value.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows optocoupler
Device pair side is in magnifying state.RXD minimum voltage is 240mV, and communication is in normal condition.
On No. 126 acquisition module, when receiving low level, the minimum test voltage of node is V126 survey=7.2V, with
Calculated value is close.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows light
Coupling device pair side is in magnifying state.RXD minimum voltage is 1V, and communication is in normal condition.
On No. 189 acquisition module, when receiving low level, the minimum test voltage of node is V189 survey=8.4V, with
Calculated value is close.The PS2701+ point minimum voltage of optocoupler is 1.2V, and PS2701- point minimum voltage is 0V, shows light
Coupling device pair side is in magnifying state.RXD minimum voltage is 240mV, and communication is in normal condition.
The Monitored System of Industrial Storage Cell of examples detailed above network construction form is able to achieve normal communication, only lists in the present invention
Partial example is not limited to the Monitored System of Industrial Storage Cell of above-mentioned network construction form.
Acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form is adopted with what is tested
Collection module joint number maximum value is compared；When calculated acquisition module joint number maximum value and the acquisition module joint number of test are maximum
When the error of value is within default error threshold, networking joint number searches the smallest calculated acquisition mould of difference therewith according to demand
The network construction form of Monitored System of Industrial Storage Cell corresponding to block joint number maximum value.
Step S3 is specifically included: most by acquisition module joint number calculated in the Monitored System of Industrial Storage Cell of same network construction form
Big value is compared with the acquisition module joint number maximum value of test.By the group net form of the Monitored System of Industrial Storage Cell of various various combinations
The maximum value of the system group network acquisition module joint number of the theoretical calculation and actual test of formula is summarized analysis.As shown in Figure 10,
For the maximum value theory of system group network acquisition module joint number provided by the invention and the comparison table of actual measurement.
The test carried out in table to the Monitored System of Industrial Storage Cell of five kinds of network construction forms is verified.
First network construction form are as follows: 1 gateway module+28AWG communication line+R36 (1K Ω)+R37 (2.2K Ω).What is calculated adopts
Collecting module joint number maximum value is 192；The acquisition module joint number maximum value of test is 187；The two error is 2.6%.
Second network construction form are as follows: 1 gateway module+28AWG communication line+R36 (2.2K Ω)+R37 (3.3K Ω).It calculates
Acquisition module joint number maximum value is 258；The acquisition module joint number maximum value of test is 252；The two error is 2.3%.
Third network construction form are as follows:+1 system interconnecting device+28AWG communication line+R36 (1K Ω)+R37 of 1 gateway module
(2.2KΩ).The acquisition module joint number maximum value of calculating is 292；The acquisition module joint number maximum value of test is 300；The two error
It is 2.7%.
4th network construction form are as follows: 1 gateway module+26AWG communication line+R36 (1K Ω)+R37 (2.2K Ω).What is calculated adopts
Collecting module joint number maximum value is 256；The acquisition module joint number maximum value of test is 251；The two error is 2.0%.
5th network construction form are as follows: 1 gateway module+26AWG communication line+R36 (2.2K Ω)+R37 (3.3K Ω).It calculates
Acquisition module joint number maximum value is 345；The acquisition module joint number maximum value of test is 345；The two error is 0.
The error threshold of the acquisition module joint number maximum value of the acquisition module joint number maximum value and test of preset calculating is
3%.By above-mentioned comparative analysis, very small difference is only existed between the system maximum networking joint number of theoretical calculation and actual measurement,
According to the error of both comparison tables less than 3%, within default error threshold.
Step S4 is specifically included: when the acquisition module joint number maximum value of the acquisition module joint number maximum value and test of calculating
When error is within default error threshold, networking joint number searches the smallest calculated acquisition module section of difference therewith according to demand
The network construction form of Monitored System of Industrial Storage Cell corresponding to number maximum value.Therefore, the acquisition module joint number maximum value of calculating can be made
For the theoretical foundation of the Monitored System of Industrial Storage Cell of the new network construction form of design.
Analysis of Networking method based on above-mentioned Monitored System of Industrial Storage Cell, the present invention also provides the groups of Monitored System of Industrial Storage Cell
Net analysis system.It as shown in figure 11, is the structural block diagram of the Analysis of Networking system of Monitored System of Industrial Storage Cell of the invention.The system
System includes:
Maximum value calculation module 100, acquisition module section in the Monitored System of Industrial Storage Cell for calculating different network construction forms
Number maximum value；Maximum value test module 200 is tested for the Monitored System of Industrial Storage Cell to above-mentioned different network construction forms, is obtained
Take the acquisition module joint number maximum value of test；Comparison module 300, for the Monitored System of Industrial Storage Cell of same network construction form to be fallen into a trap
The acquisition module joint number maximum value of calculating is compared with the acquisition module joint number maximum value of test；Network construction form searching module
400, for being missed when the error of calculated acquisition module joint number maximum value and the acquisition module joint number maximum value of test default
When within poor threshold value, networking joint number searches electric power storage corresponding to the smallest acquisition module joint number maximum value of difference therewith according to demand
The network construction form of pond monitoring system.
The maximum value calculation module 100 specifically includes:
Network construction form selection unit, for choosing the Monitored System of Industrial Storage Cell of several network construction forms；
Computing unit, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell for calculating each network construction form.
The network construction form selection unit specifically includes:
Subelement is analyzed, for calculating acquisition module node voltage according to the Monitored System of Industrial Storage Cell of existing network construction form
Formula, and analyze the acquisition module joint number maximum value of acquisition module node voltage minimum value influence Monitored System of Industrial Storage Cell；
Parameter determines subelement, influences node voltage minimum value for determining according to acquisition module node voltage formula
Parameter is number n, the conducting electric current I of acquisition modulex, communication line equivalent resistance Rc；
Subelement is chosen, for choosing the network construction form of Monitored System of Industrial Storage Cell by adjusting above three parameter.
In conclusion the present invention provides the Analysis of Networking method of Monitored System of Industrial Storage Cell and Analysis of Networking system, the party
When the error range of calculated acquisition module joint number maximum value and the acquisition module joint number maximum value of test is in default model in method
When within enclosing, networking joint number searches the prison of battery corresponding to the smallest acquisition module joint number maximum value of difference therewith according to demand
The network construction form of examining system, using the acquisition module joint number maximum value of calculating as the accumulator monitoring system for designing new network construction form
The theoretical foundation of system does not have to carry out test verifying in large quantities, reduces Networking Design cost.
Certainly, those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method,
It is that related hardware (such as processor, controller etc.) can be instructed to complete by computer program, the program can store
In a computer-readable storage medium, which may include the process such as above-mentioned each method embodiment when being executed.Its
Described in storage medium can be for memory, magnetic disk, CD etc..
It should be understood that the application of the present invention is not limited to the above for those of ordinary skills can
With improvement or transformation based on the above description, wanted for example, all these modifications and variations all should belong to right appended by the present invention
The protection scope asked.
Claims (10)
1. a kind of Analysis of Networking method of Monitored System of Industrial Storage Cell, which is characterized in that the described method includes:
Step A, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of different network construction forms is calculated；
Step B, the Monitored System of Industrial Storage Cell of above-mentioned different network construction forms is tested, obtains the acquisition module joint number of test most
Big value；
Step C, by acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form and test
Acquisition module joint number maximum value is compared；
Step D, when the error of the acquisition module joint number maximum value of calculating and the acquisition module joint number maximum value of test is missed default
When within poor threshold value, it is right to search the smallest calculated acquisition module joint number maximum value institute of difference therewith for networking joint number according to demand
The network construction form for the Monitored System of Industrial Storage Cell answered.
2. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 1, which is characterized in that the step A tool
Body includes:
A1, the Monitored System of Industrial Storage Cell for choosing several network construction forms；
A2, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell of each network construction form is calculated.
3. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 2, which is characterized in that the step A1 tool
Body includes:
A11, acquisition module node voltage formula is calculated according to the Monitored System of Industrial Storage Cell of existing network construction form, and analyze and adopt
Collect the acquisition module joint number maximum value of Module nodes voltage minimum influence Monitored System of Industrial Storage Cell；
A12, determine that the parameter for influencing node voltage minimum value is of acquisition module according to acquisition module node voltage formula
Number n, conducting electric current Ix, communication line equivalent resistance Rc；
A13, the network construction form that Monitored System of Industrial Storage Cell is determined by adjusting above three parameter.
4. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 3, which is characterized in that by increasing system
Boxcar adjusts first resistor, the resistance value of 3rd resistor, adjusts the impedance of communication line to adjust the parameter.
5. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 2, which is characterized in that when the battery
When monitoring system uses intelligent gateway network construction form, system acquisition module joint number maximum value is limited to node minimum voltage；Work as institute
When stating the network construction form that Monitored System of Industrial Storage Cell selects an intelligent gateway plus a system boxcar, system acquisition module section
Number maximum value is limited to system performance loop total current.
6. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 5, which is characterized in that when the battery
When monitoring system selects an intelligent gateway to add the network construction form of a system boxcar, the number of system acquisition module is, circuit total currentFor the current-carrying capacity of communication line in system, system acquisition module joint number maximum value is limited to selected
Communication line model.
7. the Analysis of Networking method of Monitored System of Industrial Storage Cell according to claim 1, which is characterized in that the acquisition mould of calculating
Within default error threshold, default error threshold is the error of block joint number maximum value and the acquisition module joint number maximum value of test
3%。
8. a kind of Analysis of Networking system of Monitored System of Industrial Storage Cell, which is characterized in that the system comprises:
Maximum value calculation module, acquisition module joint number is maximum in the Monitored System of Industrial Storage Cell for calculating different network construction forms
Value；
Maximum value test module tests for the Monitored System of Industrial Storage Cell to above-mentioned different network construction forms, obtains test
Acquisition module joint number maximum value；
Comparison module, for by acquisition module joint number maximum value calculated in the Monitored System of Industrial Storage Cell of same network construction form with
The acquisition module joint number maximum value of test is compared；
Network construction form searching module, for the acquisition module joint number maximum value when the acquisition module joint number maximum value and test that calculate
Error range within preset range when, it is maximum to search the smallest acquisition module joint number of difference therewith for networking joint number according to demand
The network construction form of the corresponding Monitored System of Industrial Storage Cell of value.
9. the Analysis of Networking system of Monitored System of Industrial Storage Cell according to claim 8, which is characterized in that the maximum value meter
Module is calculated to specifically include:
Network construction form selection unit, for choosing the Monitored System of Industrial Storage Cell of several network construction forms；
Computing unit, acquisition module joint number maximum value in the Monitored System of Industrial Storage Cell for calculating each network construction form.
10. the Analysis of Networking system of Monitored System of Industrial Storage Cell according to claim 9, which is characterized in that described group of net form
Formula selection unit specifically includes:
Subelement is analyzed, it is public for calculating acquisition module node voltage according to the Monitored System of Industrial Storage Cell of existing network construction form
Formula, and analyze the acquisition module joint number maximum value of acquisition module node voltage minimum value influence Monitored System of Industrial Storage Cell；
Parameter determines subelement, for determining the parameter of influence node voltage minimum value according to acquisition module node voltage formula
Number n, conducting electric current I for acquisition modulex, communication line equivalent resistance Rc；
Subelement is chosen, for choosing the network construction form of Monitored System of Industrial Storage Cell by adjusting above three parameter.
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