CN103888332B - A kind of communication bus and communication node - Google Patents
A kind of communication bus and communication node Download PDFInfo
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- CN103888332B CN103888332B CN201410064992.4A CN201410064992A CN103888332B CN 103888332 B CN103888332 B CN 103888332B CN 201410064992 A CN201410064992 A CN 201410064992A CN 103888332 B CN103888332 B CN 103888332B
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Abstract
Embodiments of the invention provide a kind of communication bus and communication node, are related to the communications field, the communication section of extended serial port communication bus can be counted in the case where ensureing communicating requirement, simplify the construction of bus.The communication bus includes the communication node being connected on communication bus, the bus power source for connecting the cable of each communication node and operating voltage being provided for bus, and also includes：Processor, the data that data input pin is received are received for timing according to the first output end of main, the voltage of the second output end of main and bus of each communication node on communication bus, it is determined whether the supply voltage of adjustment communication bus；Regulated power supply, for exporting offset voltage to adjust the supply voltage of communication bus.The present invention is used for serial communication.
Description
Technical field
The present invention relates to the communications field, more particularly to a kind of communication bus and communication node.
Background technology
Modern industry electronic product is largely designed using rack, machine frame formula mechanism, and standardization is realized in part, such as tight
Gather type PCI platforms（Compact Peripheral Component Interconnect, CPCI）.Veneer in machine frame passes through
Backplane communication bus is communicated, and completes data exchange and control function, and section communication bus has formed standard, such as EIA/
TIA422-B.These communication bus typically use some commercial transceiving chips, 75176 chips of such as Texas Instruments, these
Chip is using fixed working power, and the communication point of the bus constituted is no more than 32.
The raising required with products application, communication section points may need to reach 512, existing serial communication bus
With commercial chip shortcoming substantially, when the communication node of one section of serial communication bus is close maximum 32, often there is communication and be stranded
Difficult the problem of, it is impossible to meet the requirement of communication.In the prior art, if communication section points are accomplished by increasing repeater more than 32
Serial communication bus is extended, repeater can connect two sections of serial communication buses to reach expanding communication node
The purpose of number and communication distance, but the communication section that can be extended by increasing the method for repeater counts also very limited, and
And because increase repeater make it that the construction of communication bus is complicated.
The content of the invention
Embodiments of the invention provide a kind of communication bus and communication node, are carried out by the power supply to serial communication bus
Improve, the function to communication node is improved, can in the case where ensureing communicating requirement extended serial port communication bus it is logical
Believe nodes, simplify the construction of bus.
To reach above-mentioned purpose, embodiments of the invention are adopted the following technical scheme that：
In a first aspect, embodiments of the invention provide a kind of communication bus, including it is connected to logical on the communication bus
Letter node, the bus power source for connecting the cable of each communication node and operating voltage being provided for the bus, it is described logical
Letter bus also includes：
Processor, for timing according to the first output end of main of each communication node on the communication bus, second
The voltage and bus of output end of main receive the data that data input pin is received, it is determined whether the power supply of the adjustment communication bus
Voltage；
Regulated power supply, for exporting offset voltage to adjust the supply voltage of the communication bus.
Second aspect, embodiments of the invention provide a kind of communication node, including bus sends data input pin, bus and connect
Receive data input pin, power input, power ground end, the first output end of main and the second output end of main, the communication section
Point also includes：
Processor, for timing according to first output end of main, the voltage of second output end of main and described
Bus receives the data that data input pin is received, it is determined whether the voltage of the adjustment power input；
Regulated power supply, for exporting offset voltage to adjust the voltage of the power input.
The third aspect, embodiments of the invention also provide a kind of communication bus, and the communication bus includes：
Any one communication node described in second aspect, connects the cable of each communication node and leads to be described
Believe that bus provides the bus power source of operating voltage.
Embodiments of the invention provide a kind of communication bus, including the communication node, even being connected on the communication bus
Connect the cable of each communication node and the bus power source of operating voltage is provided for the bus, the communication bus is also wrapped
Include：Processor, it is defeated according to the first output end of main of each communication node on the communication bus, the second bus for timing
The voltage and bus for going out end receive the data that data input pin is received, it is determined whether the supply voltage of the adjustment communication bus；
Regulated power supply, for exporting offset voltage to adjust the supply voltage of the communication bus.The feelings of communicating requirement can ensured
The communication section points of extended serial port communication bus, simplify the construction of bus under condition.A kind of communication node, including bus hair are also provided
Data input pin, bus is sent to receive data input pin, power input, power ground end, the first output end of main and second total
Line output terminal, the communication node also includes：Processor, for timing according to first output end of main, described second total
The voltage of line output terminal and the bus receive the data that data input pin is received, it is determined whether the adjustment power input
Voltage；Regulated power supply, for exporting offset voltage to adjust the voltage of the power input.Also provide in addition a kind of based on institute
State the communication bus of communication node.In such manner, it is possible to ensure communicating requirement in the case of extended serial port communication bus communication section
Points, simplify the construction of bus.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is the structural representation of communication bus of the prior art；
A kind of structural representation for communication bus that Fig. 2 provides for embodiments of the invention；
A kind of structural representation of the processor for communication bus that Fig. 3 provides for embodiments of the invention；
Fig. 4 is the structural representation of communication node of the prior art；
A kind of structural representation for communication node that Fig. 5 provides for embodiments of the invention；
A kind of structural representation of the processor for communication node that Fig. 6 provides for embodiments of the invention；
The structural representation for another communication bus that Fig. 7 provides for embodiments of the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Before communication bus provided in an embodiment of the present invention is introduced, simple Jie first is done to communication bus of the prior art
Continue, Fig. 1 is the structural representation of communication bus of the prior art.
Embodiments of the invention provide a kind of communication bus 00, including be connected on communication bus communication node, connection
The cable of each communication node and the bus power source that operating voltage is provided for bus, as shown in Fig. 2 communication bus 00 is also wrapped
Include：
Processor 10, for timing according to the first output end of main of each communication node on communication bus, second total
The voltage and bus of line output terminal receive the data that data input pin is received, it is determined whether the power supply electricity of adjustment communication bus 00
Pressure.
Regulated power supply 20, for exporting offset voltage to adjust the supply voltage of communication bus 00.
Optionally, as shown in figure 3, processor 10 also includes：
Collecting unit 11, the first output end of main of each communication node on timing acquiring communication bus, second
The voltage and bus of output end of main receive the data that data input pin is received.
Judging unit 12, the first output end of main for each communication node according to the timing acquiring of collecting unit 11,
The voltage and bus of second output end of main receive the data that data input pin is received, and judge whether to need to adjust communication bus 00
Supply voltage.
Indicating member 13, the voltage for if desired adjusting power input, then to regulated power supply 20 send indicate message with
Regulated power supply 20 is set to export offset voltage to adjust the supply voltage of communication bus 00.
Optionally, judging unit 12 can be specifically for：
Judge the first output end of main of each communication node on the communication bus 00 of the timing acquiring of collecting unit 11
Whether the voltage of voltage and the second output end of main meets the first preparatory condition and the bus of each communication node receives data
Whether the bit error rate for the data that input is received meets the second preparatory condition；
If the voltage of the first output end of main of any communication node of communication bus 00 and the electricity of the second output end of main
The bit error rate that pressure is unsatisfactory for the data of the bus reception data input pin reception of the first preparatory condition or any communication node is discontented with
The second preparatory condition of foot, it is determined that need to adjust the supply voltage of communication bus 00；
If the voltage of the first output end of main of each communication node of communication bus 00 and the electricity of the second output end of main
Pressure meets the first preparatory condition, and the bus of each communication node receives the bit error rates of the data that data input pin is received and meets the
Two preparatory conditions, it is determined that the supply voltage of communication bus 00 need not be adjusted.
Optionally, the first preparatory condition includes：The voltage of first output end of main of communication node and the second bus are exported
The poor absolute value of the voltage at end is more than the first predetermined threshold value；Second preparatory condition includes：The bus of communication node receives data
The bit error rate for the data that input is received is less than the second predetermined threshold value.
In order that those skilled in the art can be more clearly understood that communication bus provided in an embodiment of the present invention, show below
The communication bus to embodiments of the invention offer of example property is described in detail：
Assuming that the first predetermined threshold value is 2, the second predetermined threshold value is 0.3, to each communication node data acquisition bus output terminals A
Voltage, output end of main B voltage and bus receive the data that data input pin is received, to the communication node that collects
Output end of main A voltage and the output end of main B collected voltage calculate the absolute value of voltage difference, if the absolute value
Think to meet the first preparatory condition more than 2；If the bus of the communication node collected receives data input pin and received
The bit error rates of data think to meet the second preparatory condition less than 0.3.
If the output end of main A collected of each communication node voltage, output end of main B electricity on communication bus 00
The data that pressure and bus receive data input pin reception meet the first preparatory condition and the second preparatory condition simultaneously, then can be true
Surely the supply voltage of communication bus 00 need not be adjusted；
If the output end of main A collected of any communication node voltage, output end of main B electricity on communication bus 00
The data that pressure and bus receive data input pin reception are unsatisfactory for the first preparatory condition or the second preparatory condition, then can determine
Need the supply voltage of adjustment communication node 00.
If it is determined that needing to adjust the supply voltage of communication node, indicating member 13 can send to regulated power supply 20 and indicate
Message, wherein, indicate that the magnitude of voltage that regulated power supply 20 needs the offset voltage of output can be included in message, regulated power supply 20 is received
The offset voltage of needs is exported after to the instruction message to be overlapped to cause communication bus with the supply voltage of communication bus 00
00 meets communicating requirement.Wherein, the power input of different communication nodes needs the magnitude of voltage compensated to be different, adjustable electric
The offset voltage value that source 20 exports maximum is adjusted to the supply voltage of communication bus 00.
It should be noted that the output end of main of each communication node on the timing acquiring communication bus 00 of collecting unit 11
A, output end of main B voltage and bus receive the data that data input pin OUT is received, and judging unit 12 is according to collecting unit
Output end of main A, output end of main B voltage and the bus of each communication node of 11 collections receive data input pin OUT and connect
The data of receipts, the first preparatory condition and the second preparatory condition judge whether to need to adjust the supply voltage of communication bus 00.
Because, in practice, it can select to complete communication using appropriate number of communication node as needed, and
The quantity of communication node is related to the magnitude of voltage for the offset voltage that regulated power supply 20 is exported, and being counted when communication section increases or subtract
Need to recalculate after few and obtain the offset voltage value that regulated power supply 20 needs to export, therefore, it is necessary to which timing acquiring communication is total
Output end of main A, output end of main B voltage and the bus of each communication node of line 00 receive data input pin OUT and connect
The data of receipts, judge whether to need the supply voltage of adjustment communication bus 00 and if necessary to adjust according to collection to data
Supply voltage, which is further calculated, obtains the offset voltage value that regulated power supply 20 needs to export, and wherein timing comes as needed
Set, if it is not that very frequently, timing can be set into longer to adjust in practice using the number of times of communication node number,
Such as 10 minutes, if adjustment is very frequent using the number of times of communication node number in practice, timing can be set short by one
A bit, such as 1 minute.The selection of timing is not construed as limiting in the present invention.
Embodiments of the invention provide a kind of communication bus, including the communication node that is connected on communication bus, connection are each
The cable of individual communication node and the bus power source that operating voltage is provided for bus, communication bus also include：Processor, for fixed
When according to the first output end of main, the voltage of the second output end of main and bus of each communication node on communication bus receive
The data that data input pin is received, it is determined whether the supply voltage of adjustment communication bus；Regulated power supply, for exporting offset voltage
To adjust the supply voltage of communication bus.In such manner, it is possible in the case where ensureing communicating requirement extended serial port communication bus it is logical
Believe nodes, simplify the construction of bus.
Before communication node provided in an embodiment of the present invention is introduced, first to the communication node of communication bus of the prior art
Simple introduction is done, as shown in figure 4, communication node of the prior art includes：Bus sends data input pin IN, bus and receives number
According to input OUT, power input V+, power ground end GND, output end of main A and output end of main B.
Embodiments of the invention provide a kind of communication node 50, including bus sends data input pin, bus and receives data
Input, power input, power ground end, the first output end of main and the second output end of main, as shown in figure 5, also including：
Processor unit 51, connects for timing according to the first output end of main, the voltage of the second output end of main and bus
Receive the data that data input pin is received, it is determined whether the voltage of adjustment power input.
Regulated power supply 52, for exporting offset voltage to adjust the voltage of power input.
Optionally, as shown in fig. 6, the processor 51 also includes：
Collecting unit 511, voltage, the voltage of the second output end of main for the output end of main of timing acquiring first and total
Line receives the data that data input pin is received.
Judging unit 512, it is voltage for the first output end of main according to the timing acquiring of collecting unit 111, second total
The data that the voltage and bus of line output terminal receive data input pin reception judge whether the voltage for needing to adjust power input.
Indicating member 513, the voltage for if desired adjusting power input, then to regulated power supply 52 send indicate message with
Regulated power supply 52 is set to export offset voltage to adjust the voltage of power input.
Optionally, judging unit 512 specifically for：
Judging the voltage of the voltage and the second output end of main of the first output end of main of the timing acquiring of collecting unit 511 is
Whether the no bit error rate for meeting the data that the first preparatory condition and bus receive data input pin reception meets the second default bar
Part；
If the voltage of the voltage of the first output end of main and the second output end of main is unsatisfactory for the first preparatory condition or bus
The bit error rate for receiving the data that data input pin is received is unsatisfactory for the second preparatory condition, it is determined that need to adjust power input
Voltage；
If the voltage of the voltage of the first output end of main and the second output end of main meets the first preparatory condition, and bus connects
The bit error rate for receiving the data that data input pin is received meets the second preparatory condition, it is determined that need not adjust the electricity of power input
Pressure.
Optionally, the first preparatory condition includes：The voltage of the voltage of first output end of main and the second output end of main
The absolute value of difference is more than the first predetermined threshold value；Second preparatory condition includes：Bus receives the mistake for the data that data input pin is received
Code check is less than the second predetermined threshold value.
In order that those skilled in the art can be more clearly understood that communication node provided in an embodiment of the present invention, show below
The communication node to embodiments of the invention offer of example property is described in detail：
Assuming that the first predetermined threshold value is 2, the second predetermined threshold value is 0.3, to the output end of main A voltage that collects with adopting
The output end of main B collected voltage calculates the absolute value of voltage difference, thinks to meet first pre- if the absolute value is more than 2
If condition；Data acquisition bus receives the data that data input pin is received, if the bus of the communication node 50 collected receives number
Think to meet the second preparatory condition less than 0.3 according to the bit error rate of the input OUT data received.
If the output end of main A collected voltage, output end of main B voltage and bus receive data input termination
The data of receipts meet the first preparatory condition and the second preparatory condition simultaneously, then can determine that the electricity of communication node 50 need not be adjusted
The voltage of source input；
If the output end of main A collected voltage, output end of main B voltage and bus receive data input termination
The data of receipts are unsatisfactory for the first preparatory condition or the second preparatory condition, then can determine that the power supply for needing to adjust communication node 50 is defeated
Enter the voltage at end.
If it is determined that needing to adjust the voltage of the power input of communication node, indicating member 513 is sent out to regulated power supply 52
Instruction message is sent, wherein, indicate that the magnitude of voltage that regulated power supply 52 needs the offset voltage of output, adjustable electric can be included in message
Source 52 receive exported after the instruction message needs offset voltage be loaded into the power input of communication node 50 with cause communication
Node 50 meets communicating requirement.
It should be noted that output end of main A, the output end of main B electricity of the timing acquiring communication node 50 of processor 51
Pressure and bus receive the data that data input pin OUT is received, and pre- according to the data collected, the first preparatory condition and second
If condition judges whether to need to adjust the voltage of the power input of communication node 50.
Because, in practice, it can as needed select to complete communication using appropriate number of communication node 50, lead to
The magnitude of voltage for the offset voltage that the regulated power supply 52 of the quantity of the communication node 50 used during letter and communication node 50 is exported is phase
Close, need processor 51 to recalculate after communication section, which is counted, to be increased or decreased and obtain the compensation that regulated power supply 52 needs to export
Magnitude of voltage, therefore, it is necessary to which the output end of main A of timing acquiring communication node 50, output end of main B voltage and bus connect
The data that data input pin OUT is received are received, are judged whether to need to adjust the power input of communication node 50 according to the data collected
The voltage at end and if desired adjust further to calculate and obtain required offset voltage.Wherein timing is set as needed
Put, if it is not that very frequently, timing can be set into longer to adjust in practice using the number of times of the number of communication node 50,
Such as 10 minutes, if adjustment is very frequent using the number of times of the number of communication node 50 in practice, timing can be set short
Some, such as 1 minute.The selection of timing is not construed as limiting in the present invention.
A kind of communication node of embodiments of the invention offer, including bus transmission data input pin, bus reception data are defeated
Enter end, power input, power ground end, the first output end of main and the second output end of main, in addition to：Processor, is used for
Timing receives the data that data input pin is received according to the first output end of main, the voltage of the second output end of main and bus, really
The fixed voltage for whether adjusting power input；Regulated power supply, for exporting offset voltage to adjust the voltage of power input.Energy
The communication section points of enough extended serial port communication bus in the case where ensureing communicating requirement, simplify the construction of bus.
Embodiments of the invention also provide a kind of communication bus 70, as shown in fig. 7, the communication bus 70 includes：Communication section
50 are put, the bus power source of operating voltage is provided for the communication bus and connects the cable of each communication node 50.
Embodiments of the invention provide a kind of communication bus, and the communication bus includes：Communication node, carry for the communication bus
The cable of bus power source and connection communication node for operating voltage.Wherein, communication node includes bus transmission data input
End, bus receive data input pin, power input, power ground end, the first output end of main and the second output end of main, also
Including：Processor, data input is received for timing according to the first output end of main, the voltage of the second output end of main and bus
Hold the data received, it is determined whether the voltage of adjustment power input；Regulated power supply, for exporting offset voltage to adjust power supply
The voltage of input.In such manner, it is possible to which the communication section of extended serial port communication bus is counted in the case where ensureing communicating requirement, simplify
The construction of bus.
Through the above description of the embodiments, it is apparent to those skilled in the art that, for description
It is convenient and succinct, can as needed will be upper only with the division progress of above-mentioned each functional module for example, in practical application
State function distribution to be completed by different functional modules, i.e., the internal structure of device is divided into different functional modules, to complete
All or part of function described above.
Each functional unit in each embodiment of the invention can be integrated in a processing unit or each
The independent physics of unit includes, can also two or more units it is integrated in a unit.Above-mentioned integrated unit both may be used
To be realized in the form of hardware, it would however also be possible to employ hardware adds the form of SFU software functional unit to realize.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, technical scheme is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment（Can be personal computer, server, or network equipment etc.）Or processor（processor）Perform the present invention each
The all or part of step of embodiment methods described.And foregoing storage medium includes：USB flash disk, mobile hard disk, read-only storage
（ROM, Read-Only Memory）, random access memory（RAM, Random Access Memory）, magnetic disc or CD
Etc. it is various can be with the medium of store program codes.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (9)
1. a kind of serial communication bus, including be connected in the serial communication bus communication node, to connect each described logical
Believe the cable of node and the bus power source of operating voltage is provided for the bus, it is characterised in that the serial communication bus
Also include：
Processor, for timing according to the first output end of main of each communication node in the serial communication bus, second
The voltage and bus of output end of main receive the bit error rate for the data that data input pin is received, it is determined whether the adjustment serial ports leads to
Believe the supply voltage of bus；
Regulated power supply, one end is connected with the processor, and the other end is connected with each communication node respectively, for for each logical
Letter node exports offset voltage to adjust the supply voltage of the serial communication bus.
2. serial communication bus according to claim 1, it is characterised in that the processor includes：
Collecting unit, the first bus for each communication node described in timing acquiring in serial communication bus is exported
End, the voltage of the second output end of main and bus receive the data that data input pin is received；
Judging unit, the first output end of main for each communication node according to the collecting unit timing acquiring,
The voltage and bus of second output end of main receive the bit error rate for the data that data input pin is received, and judge whether to need to adjust institute
State the supply voltage of serial communication bus；
Indicating member, the voltage for if desired adjusting the power input, then to the regulated power supply send indicate message with
The regulated power supply is set to export the offset voltage to adjust the supply voltage of the serial communication bus.
3. serial communication bus according to claim 2, it is characterised in that the judging unit specifically for：
Judge the first bus of each communication node in the serial communication bus of the collecting unit timing acquiring
Whether the voltage of the voltage of output end and the second output end of main meets the first preparatory condition and each communication node
Whether the bit error rate that bus receives the data that data input pin is received meets the second preparatory condition；
If the voltage of the first output end of main of any communication node of the serial communication bus and the second output end of main
Voltage is unsatisfactory for the error code of the data of the bus reception data input pin reception of the first preparatory condition or any communication node
Rate is unsatisfactory for second preparatory condition, it is determined that need to adjust the supply voltage of the serial communication bus；
If the voltage of the first output end of main of each communication node of the serial communication bus and the second output end of main
Voltage meets first preparatory condition, and the bus of each communication node receives the mistakes of the data that data input pin is received
Code check meets second preparatory condition, it is determined that need not adjust the supply voltage of the serial communication bus.
4. serial communication bus according to claim 3, it is characterised in that first preparatory condition includes：It is described logical
Believe that the poor absolute value of the voltage of the first output end of main of node and the voltage of the second output end of main is more than the first default threshold
Value；Second preparatory condition includes：The bit error rate that the bus of the communication node receives the data that data input pin is received is small
In the second predetermined threshold value.
5. a kind of communication node, sends data input pin, bus and receives data input applied to serial communication bus, including bus
End, power input, power ground end, the first output end of main and the second output end of main, it is characterised in that the communication section
Point also includes：
Processor, for timing according to first output end of main, the voltage of second output end of main and the bus
Receive the bit error rate for the data that data input pin is received, it is determined whether the voltage of the adjustment power input；
Regulated power supply, one end is connected with the processor, and the other end is connected with each communication node respectively, for for each logical
Letter node exports offset voltage to adjust the voltage of the power input.
6. communication node according to claim 5, it is characterised in that the processor unit includes：
Collecting unit, for the voltage of the first output end of main described in timing acquiring, the voltage of second output end of main and
The bus receives the data that data input pin is received；
Judging unit, voltage for first output end of main according to the collecting unit timing acquiring, described second
The voltage of output end of main and the bus receive the bit error rate for the data that data input pin is received, and judge whether to need to adjust institute
State the voltage of power input；
Indicating member, the voltage for if desired adjusting the power input, then to the regulated power supply send indicate message with
The regulated power supply is set to export the offset voltage to adjust the voltage of the power input.
7. communication node according to claim 6, it is characterised in that the judging unit specifically for：
Judge the voltage and second output end of main of first output end of main of the collecting unit timing acquiring
Whether the bit error rate whether voltage meets the data that the first preparatory condition and the bus receive data input pin reception meets
Second preparatory condition；
If the voltage of the voltage of first output end of main and second output end of main is unsatisfactory for the described first default bar
The bit error rate that part or the bus receive the data that data input pin is received is unsatisfactory for second preparatory condition, it is determined that need
Adjust the voltage of the power input；
If the voltage of the voltage of first output end of main and second output end of main meets first preparatory condition,
The bit error rate for receiving the data that data input pin is received with the bus meets second preparatory condition, it is determined that need not adjust
The voltage of the whole power input.
8. communication node according to claim 7, it is characterised in that first preparatory condition includes：Described first is total
The poor absolute value of the voltage of line output terminal and the voltage of second output end of main is more than the first predetermined threshold value；Described second
Preparatory condition includes：The bit error rate that the bus receives the data that data input pin is received is less than the second predetermined threshold value.
9. a kind of serial communication bus, it is characterised in that the serial communication bus includes：
Communication node as described in claim 5 to 8 any one, connect each as described in communication node cable and be described
Serial communication bus provides the bus power source of operating voltage.
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| CN201410064992.4A CN103888332B (en) | 2014-02-25 | 2014-02-25 | A kind of communication bus and communication node |
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| CN201410064992.4A CN103888332B (en) | 2014-02-25 | 2014-02-25 | A kind of communication bus and communication node |
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| US9876857B2 (en) * | 2014-08-27 | 2018-01-23 | Hyundai Motor Company | Operation method of communication node in network |
| CN104394218B (en) * | 2014-11-28 | 2018-05-22 | 东南大学 | A kind of distributed parallel computing environment that power supply is provided by communication bus |
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| CN1794738A (en) * | 2005-11-09 | 2006-06-28 | 杭州华为三康技术有限公司 | Feeding circuit, method of providing different feed voltage and front end feed device |
| CN101404604A (en) * | 2008-11-03 | 2009-04-08 | 浪潮电子信息产业股份有限公司 | 485 bus type monitoring system and its high extendibility method |
| CN103597781A (en) * | 2011-06-15 | 2014-02-19 | 奥斯兰姆施尔凡尼亚公司 | System bus with variable output power supply |
-
2014
- 2014-02-25 CN CN201410064992.4A patent/CN103888332B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998037642A1 (en) * | 1997-02-21 | 1998-08-27 | Mecel Ab | Method and arrangement for combined data and power distribution using a communication bus |
| CN1459906A (en) * | 2002-05-22 | 2003-12-03 | 上海贝尔有限公司 | New distribution type power supply system |
| CN1794738A (en) * | 2005-11-09 | 2006-06-28 | 杭州华为三康技术有限公司 | Feeding circuit, method of providing different feed voltage and front end feed device |
| CN101404604A (en) * | 2008-11-03 | 2009-04-08 | 浪潮电子信息产业股份有限公司 | 485 bus type monitoring system and its high extendibility method |
| CN103597781A (en) * | 2011-06-15 | 2014-02-19 | 奥斯兰姆施尔凡尼亚公司 | System bus with variable output power supply |
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|---|---|
| CN103888332A (en) | 2014-06-25 |
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