CN103888332A - Communication bus and communication nodes - Google Patents
Communication bus and communication nodes Download PDFInfo
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- CN103888332A CN103888332A CN201410064992.4A CN201410064992A CN103888332A CN 103888332 A CN103888332 A CN 103888332A CN 201410064992 A CN201410064992 A CN 201410064992A CN 103888332 A CN103888332 A CN 103888332A
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Abstract
The embodiment of the invention provides a communication bus and communication nodes, and relates to the field of communications. The number of the communication nodes of the serial port bus can be expanded and the structure of the bus can be simplified on the condition that communication requirements are guaranteed. The communication bus comprises the communication nodes connected to the communication bus, cables connecting all the communication nodes and a bus power source which provides working voltage for the bus, and further comprises a processor and an adjustable power source, wherein the processor is used for regularly determining whether to adjust the power supply voltage of the communication bus or not according to voltage of the first bus output end of each communication node on the communication bus and voltage of the second bus output end of each communication node on the communication bus, and the adjustable power source is ued for outputting compensation voltage so as to adjust the power supply voltage of the communication bus. The communication bus and the communication nodes are used for serial communications.
Description
Technical field
The present invention relates to the communications field, relate in particular to a kind of communication bus and communication node.
Background technology
Modern industry electronic product adopts rack, machine frame formula mechanism design in a large number, and part realizes standardization, as compact PCI platform (Compact Peripheral Component Interconnect, CPCI).Veneer in machine frame communicates by backboard communication bus, completes exchanges data and controls function, and part communication bus has formed standard, as EIA/TIA422-B.These communication buss generally adopt some commercial transceiving chips, and as 75176 chips of Texas Instruments, these chips adopt steady job power supply, and the communication point of the bus forming can not exceed 32.
Along with the raising of product application requirements, communication section is counted may need to reach 512, and existing serial communication bus and commercial chip shortcoming are obvious, in the time that the communication node of one section of serial communication bus approaches maximum 32, often there is the problem of difficult communication, can not meet the requirement of communication.In prior art, if communication section is counted and is exceeded 32 and just need to increase repeater serial communication bus is expanded, repeater can couple together two sections of serial communication buses to reach the object of expanding communication nodes and communication distance, but it is also very limited that the communication section that can expand by the method for increase repeater is counted, and because increase repeater makes the complex structure of communication bus.
Summary of the invention
Embodiments of the invention provide a kind of communication bus and communication node, by the power supply of serial communication bus is improved, function to communication node is improved, and can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplifies the structure of bus.
For achieving the above object, embodiments of the invention adopt following technical scheme:
First aspect, embodiments of the invention provide a kind of communication bus, comprise the communication node that is connected on described communication bus, connect the cable of communication node described in each and for described bus provides the bus power source of operating voltage, described communication bus also comprises:
Processor, receives according to the voltage of the first output end of main of the each communication node on described communication bus, the second output end of main and bus the data that data input pin receives for timing, determines whether to adjust the supply power voltage of described communication bus;
Regulated power supply, for exporting bucking voltage to adjust the supply power voltage of described communication bus.
Second aspect, embodiments of the invention provide a kind of communication node, comprise that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, and described communication node also comprises:
Processor, receives according to the voltage of described the first output end of main, described the second output end of main and described bus the data that data input pin receives for timing, determines whether to adjust the voltage of described power input;
Regulated power supply, for exporting bucking voltage to adjust the voltage of described power input.
The third aspect, embodiments of the invention also provide a kind of communication bus, and described communication bus comprises:
Any one communication node described in second aspect, connects the cable of communication node described in each and provides the bus power source of operating voltage for described communication bus.
Embodiments of the invention provide a kind of communication bus, comprise the communication node that is connected on described communication bus, connect the cable of communication node described in each and provide the bus power source of operating voltage for described bus, described communication bus also comprises: processor, receive according to the voltage of the first output end of main of the each communication node on described communication bus, the second output end of main and bus the data that data input pin receives for timing, determine whether to adjust the supply power voltage of described communication bus; Regulated power supply, for exporting bucking voltage to adjust the supply power voltage of described communication bus.Can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplify the structure of bus.A kind of communication node is also provided, comprise that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, described communication node also comprises: processor, receive according to the voltage of described the first output end of main, described the second output end of main and described bus the data that data input pin receives for timing, determine whether to adjust the voltage of described power input; Regulated power supply, for exporting bucking voltage to adjust the voltage of described power input.A kind of communication bus based on described communication node is also provided in addition.Like this, can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplify the structure of bus.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, to the accompanying drawing of required use in embodiment or description of the Prior Art be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of communication bus of the prior art;
The structural representation of a kind of communication bus that Fig. 2 provides for embodiments of the invention;
The structural representation of the processor of a kind of communication bus that Fig. 3 provides for embodiments of the invention;
Fig. 4 is the structural representation of communication node of the prior art;
The structural representation of a kind of communication node that Fig. 5 provides for embodiments of the invention;
The structural representation of the processor of a kind of communication node that Fig. 6 provides for embodiments of the invention;
The structural representation of the another kind of 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 clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Introducing before the communication bus that the embodiment of the present invention provides, first communication bus of the prior art is done to simple introduction, the structural representation that Fig. 1 is communication bus of the prior art.
Embodiments of the invention provide a kind of communication bus 00, comprise the communication node that is connected on communication bus, connect the cable of each communication node and for bus provides the bus power source of operating voltage, as shown in Figure 2, communication bus 00 also comprises:
Regulated power supply 20, for exporting bucking voltage to adjust the supply power voltage of communication bus 00.
Optionally, as shown in Figure 3, processor 10 also comprises:
Collecting unit 11, receives for the first output end of main of the each communication node on timing acquiring communication bus, voltage and the bus of the second output end of main the data that data input pin receives.
Judging unit 12, for receiving according to the voltage of the first output end of main of each communication node of collecting unit 11 timing acquiring, the second output end of main and bus the data that data input pin receives, judges whether to adjust the supply power voltage of communication bus 00.
Indicating member 13, for if desired adjusting the voltage of power supply input, sends Indication message so that regulated power supply 20 is exported bucking voltage to adjust the supply power voltage of communication bus 00 to regulated power supply 20.
Optionally, judging unit 12 can be specifically for:
Judge whether the voltage of the first output end of main of the each communication node on the communication bus 00 of collecting unit 11 timing acquiring and the voltage of the second output end of main meet the error rate that the first bus pre-conditioned and each communication node receives the data that data input pin receives and whether meet second pre-conditioned;
If the voltage of the first output end of main of arbitrary communication node of communication bus 00 and the voltage of the second output end of main do not meet the error rate that the bus of first pre-conditioned or arbitrary communication node receives the data that data input pin receives and do not meet second pre-conditionedly, determine the supply power voltage that need to adjust communication bus 00;
If it is first pre-conditioned that the voltage of the first output end of main of each communication node of communication bus 00 and the voltage of the second output end of main meet, it is second pre-conditioned that the error rate that receives the data that data input pin receives with the bus of each communication node meets, and determines the supply power voltage that does not need to adjust communication bus 00.
Optionally, the first pre-conditioned comprising: the absolute value of the difference of the voltage of the first output end of main of communication node and the voltage of the second output end of main is greater than the first predetermined threshold value; The second pre-conditioned comprising: the error rate that the bus of communication node receives the data of data input pin reception is less than the second predetermined threshold value.
In order to make those skilled in the art can more clearly understand the communication bus that the embodiment of the present invention provides, below the exemplary communication bus that embodiments of the invention are provided be elaborated:
Suppose that the first predetermined threshold value is 2, the second predetermined threshold value is 0.3, voltage to each communication node data acquisition bus output terminals A, the voltage of output end of main B and bus receive the data that data input pin receives, the voltage of the voltage of output end of main A to this communication node collecting and the output end of main B collecting calculates the absolute value of voltage difference, if this absolute value is greater than 2, think meet first pre-conditioned; Be less than 0.3 if the bus of this communication node collecting receives the error rate of the data that receive of data input pin, think meet second pre-conditioned.
If the voltage of the voltage of the output end of main A collecting of each communication node, output end of main B and bus receive data that data input pin receives and meet first pre-conditionedly and second pre-conditioned on communication bus 00 simultaneously, can determine the supply power voltage that does not need to adjust communication bus 00;
If the voltage of the voltage of the output end of main A collecting of arbitrary communication node, output end of main B and bus receive data that data input pin receives and do not meet first pre-conditionedly or second pre-conditioned on communication bus 00, can determine the supply power voltage that need to adjust communication node 00.
If determine the supply power voltage that need to adjust communication node, indicating member 13 can send Indication message to regulated power supply 20, wherein, in Indication message, can comprise the magnitude of voltage of the bucking voltage of regulated power supply 20 needs outputs, regulated power supply 20 receives that output needs after this Indication message bucking voltage and the supply power voltage of communication bus 00 superpose to make communication bus 00 to meet communicating requirement.Wherein, the magnitude of voltage that the power input of different communication nodes need to compensate is different, and regulated power supply 20 is exported maximum bucking voltage value the supply power voltage of communication bus 00 is adjusted.
It should be noted that, the voltage of output end of main A, the output end of main B of the each communication node on collecting unit 11 timing acquiring communication buss 00 and bus receive the data that data input pin OUT receives, and the output end of main A of each communication node that judging unit 12 gathers according to collecting unit 11, the voltage of output end of main B and bus receive data, first pre-conditioned and the second pre-conditioned supply power voltage that judges whether to adjust communication bus 00 that data input pin OUT receives.
This be because, in practice, the communication node of choice for use suitable quantity completes communication as required, and the magnitude of voltage of the bucking voltage that the quantity of communication node is exported to regulated power supply 20 is relevant, after counting increase or minimizing, communication section needs to recalculate the bucking voltage value that obtains regulated power supply 20 needs outputs, therefore, be necessary the output end of main A of each communication node of timing acquiring communication bus 00, the voltage of output end of main B and bus receive the data that data input pin OUT receives, if judge whether to adjust the supply power voltage of communication bus 00 and need to adjust supply power voltage to calculate further the bucking voltage value that regulated power supply 20 needs output to data according to what gather, wherein timing arranges as required, if it is not very frequent adjusting in reality and using the number of times of communication node number, timing can be arranged longer, such as 10 minutes, use the number of times of communication node number very frequent if adjusted in reality, timing can be arranged shorter, such as 1 minute.Choosing in the present invention of timing is not construed as limiting.
Embodiments of the invention provide a kind of communication bus, comprise the communication node that is connected on communication bus, connect the cable of each communication node and provide the bus power source of operating voltage for bus, communication bus also comprises: processor, receive according to the voltage of the first output end of main of the each communication node on communication bus, the second output end of main and bus the data that data input pin receives for timing, determine whether to adjust the supply power voltage of communication bus; Regulated power supply, for exporting bucking voltage to adjust the supply power voltage of communication bus.Like this, can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplify the structure of bus.
Introducing before the communication node that the embodiment of the present invention provides, first the communication node of communication bus of the prior art is done to simple introduction, as shown in Figure 4, communication node of the prior art comprises: bus sends data input pin IN, bus receives data input pin 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, comprise that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, as shown in Figure 5, also comprise:
Regulated power supply 52, for exporting bucking voltage to adjust the voltage of power input.
Optionally, as shown in Figure 6, this processor 51 also comprises:
Collecting unit 511, receives for the voltage of timing acquiring the first output end of main, voltage and the bus of the second output end of main the data that data input pin receives.
Indicating member 513, for if desired adjusting the voltage of power supply input, sends Indication message so that regulated power supply 52 is exported bucking voltage to adjust the voltage of power input to regulated power supply 52.
Optionally, judging unit 512 specifically for:
Judge whether the voltage of the first output end of main of collecting unit 511 timing acquiring and the voltage of the second output end of main meet the error rate that the first pre-conditioned and bus receives the data that data input pin receives and whether meet second pre-conditioned;
If the voltage of the voltage of the first output end of main and the second output end of main does not meet the error rate that the first pre-conditioned or bus receives the data that data input pin receives and do not meet second pre-conditionedly, determine the voltage that need to adjust power input;
If it is first pre-conditioned that the voltage of the voltage of the first output end of main and the second output end of main meets, and the bus error rate that receives the data that data input pin receives meets second pre-conditionedly, determines the voltage that does not need to adjust power input.
Optionally, the first pre-conditioned comprising: the absolute value of the difference of the voltage of the voltage of the first output end of main and the second output end of main is greater than the first predetermined threshold value; The second pre-conditioned comprising: the error rate that bus receives the data of data input pin reception is less than the second predetermined threshold value.
In order to make those skilled in the art can more clearly understand the communication node that the embodiment of the present invention provides, below the exemplary communication node that embodiments of the invention are provided be elaborated:
Suppose that the first predetermined threshold value is that 2, the second predetermined threshold value are 0.3, the voltage of the output end of main A collecting and the voltage of the output end of main B that collects calculated to the absolute value of voltage difference, if this absolute value is greater than 2, think meet first pre-conditioned; Data acquisition bus receives the data that data input pin receives, and is less than 0.3 if the bus of this communication node 50 collecting receives the error rate of the data that data input pin OUT receives, think meet second pre-conditioned.
If the voltage of the output end of main A collecting, the voltage of output end of main B and bus receive data that data input pin receives and meet first pre-conditionedly and second pre-conditioned simultaneously, can determine the voltage that does not need the power input of adjusting communication node 50;
If the voltage of the output end of main A collecting, the voltage of output end of main B and bus receive data that data input pin receives and do not meet first pre-conditionedly or second pre-conditioned, can determine the voltage of the power input that need to adjust communication node 50.
If determine the voltage of the power input that need to adjust communication node, indicating member 513 sends Indication message to regulated power supply 52, wherein, in Indication message, can comprise the magnitude of voltage of the bucking voltage of regulated power supply 52 needs outputs, regulated power supply 52 receives that power input that output needs after this Indication message bucking voltage is loaded into communication node 50 is to make communication node 50 meet communicating requirement.
It should be noted that, the voltage of output end of main A, the output end of main B of processor 51 timing acquiring communication nodes 50 and bus receive the data that data input pin OUT receives, and according to the data that collect, first pre-conditioned and the second pre-conditioned voltage that judges whether the power input that need to adjust communication node 50.
This be because, in practice, the communication node 50 of choice for use suitable quantity completes communication as required, the quantity of the communication node 50 using when communication is relevant to the magnitude of voltage of the bucking voltage that the regulated power supply 52 of communication node 50 is exported, after communication section is counted increase or minimizing, need processor 51 to recalculate and obtain the bucking voltage value that regulated power supply 52 needs are exported, therefore, be necessary the output end of main A of timing acquiring communication node 50, the voltage of output end of main B and bus receive the data that data input pin OUT receives, judge whether to adjust the voltage of communication node 50 power inputs and if desired adjust and calculate further required bucking voltage according to the data that collect.Wherein timing arranges as required, if it is not very frequent adjusting in reality and using the number of times of communication node 50 numbers, timing can be arranged longer, such as 10 minutes, use the number of times of communication node 50 numbers very frequent if adjusted in reality, timing can be arranged shorter, such as 1 minute.Choosing in the present invention of timing is not construed as limiting.
Embodiments of the invention provide a kind of communication node, comprise that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, also comprise: processor, receive according to the voltage of the first output end of main, the second output end of main and bus the data that data input pin receives for timing, determine whether to adjust the voltage of power input; Regulated power supply, for exporting bucking voltage to adjust the voltage of power input.Can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplify the structure of bus.
Embodiments of the invention also provide a kind of communication bus 70, and as shown in Figure 7, this communication bus 70 comprises: communication node 50, the bus power source of operating voltage is provided and connects the cable of each communication node 50 for this communication bus.
Embodiments of the invention provide a kind of communication bus, and this communication bus comprises: communication node, the bus power source of operating voltage is provided and connects the cable of communication node for this communication bus.Wherein, communication node comprises that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, also comprise: processor, receive according to the voltage of the first output end of main, the second output end of main and bus the data that data input pin receives for timing, determine whether to adjust the voltage of power input; Regulated power supply, for exporting bucking voltage to adjust the voltage of power input.Like this, can in the situation that guaranteeing communicating requirement, count by the communication section of extended serial port communication bus, simplify the structure of bus.
Through the above description of the embodiments, those skilled in the art can be well understood to, for convenience and simplicity of description, only be illustrated with the division of above-mentioned each functional module, in practical application, can above-mentioned functions be distributed and completed by different functional modules as required, be divided into different functional modules by the internal structure of device, to complete all or part of function described above.
Each functional unit in each embodiment of the present invention can be integrated in a processing unit, can be also that the independent physics of unit comprises, also can be integrated in a unit two or more unit.Above-mentioned integrated unit both can adopt the form of hardware to realize, and the form that also can adopt hardware to add SFU software functional unit realizes.
If described integrated unit is realized and during as production marketing independently or use, can be stored in a computer read/write memory medium using the form of SFU software functional unit.Based on such understanding, the all or part of of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprise that some instructions (can be personal computers in order to make a computer equipment, server, or the network equipment etc.) or processor (processor) carry out all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: various media that can be program code stored such as USB flash disk, portable hard drive, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disc or CDs.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, any be familiar with those skilled in the art the present invention disclose technical scope in; can expect easily changing or replacing, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (9)
1. a communication bus, comprises the communication node that is connected on described communication bus, connects the cable of communication node described in each and for described bus provides the bus power source of operating voltage, it is characterized in that, described communication bus also comprises:
Processor, receives according to the voltage of the first output end of main of the each communication node on described communication bus, the second output end of main and bus the data that data input pin receives for timing, determines whether to adjust the supply power voltage of described communication bus;
Regulated power supply, for exporting bucking voltage to adjust the supply power voltage of described communication bus.
2. communication bus according to claim 1, is characterized in that, described processor comprises:
Collecting unit, receives for the first output end of main of the described each communication node on communication bus described in timing acquiring, voltage and the bus of the second output end of main the data that data input pin receives;
Judging unit, for receiving according to the voltage of the first output end of main of described each communication node of described collecting unit timing acquiring, the second output end of main and bus the data that data input pin receives, judge whether to adjust the supply power voltage of described communication bus;
Indicating member, for if desired adjusting the voltage of described power supply input, sends Indication message so that described regulated power supply is exported described bucking voltage to adjust the supply power voltage of described communication bus to described regulated power supply.
3. communication bus according to claim 2, is characterized in that, described judging unit specifically for:
Judge whether the voltage of the first output end of main of the described each communication node on the described communication bus of described collecting unit timing acquiring and the voltage of the second output end of main meet the error rate that the first bus pre-conditioned and described each communication node receives the data that data input pin receives and whether meet second pre-conditioned;
If the voltage of the first output end of main of arbitrary communication node of described communication bus and the voltage of the second output end of main do not meet the error rate that the bus of first pre-conditioned or described arbitrary communication node receives the data that data input pin receives and do not meet described second pre-conditionedly, determine the supply power voltage that need to adjust described communication bus;
If the voltage of the first output end of main of each communication node of described communication bus and the voltage of the second output end of main meet described first pre-conditioned, the error rate that receives the data that data input pin receives with the bus of described each communication node meets described second pre-conditioned, determines the supply power voltage that does not need to adjust described communication bus.
4. communication bus according to claim 3, is characterized in that, described the first pre-conditioned comprising: the absolute value of the difference of the voltage of the first output end of main of described communication node and the voltage of the second output end of main is greater than the first predetermined threshold value; Described the second pre-conditioned comprising: the error rate that the bus of described communication node receives the data of data input pin reception is less than the second predetermined threshold value.
5. a communication node, comprises that bus sends data input pin, bus receives data input pin, power input, power ground end, the first output end of main and the second output end of main, it is characterized in that, described communication node also comprises:
Processor, receives according to the voltage of described the first output end of main, described the second output end of main and described bus the data that data input pin receives for timing, determines whether to adjust the voltage of described power input;
Regulated power supply, for exporting bucking voltage to adjust the voltage of described power input.
6. communication node according to claim 5, is characterized in that, described processor unit comprises:
Collecting unit, receives for voltage and the described bus of the voltage of the first output end of main described in timing acquiring, described the second output end of main the data that data input pin receives;
Judging unit, for judging whether to adjust the voltage of described power input according to the data of the voltage of the voltage of described first output end of main of described collecting unit timing acquiring, described the second output end of main and the reception of described bus reception data input pin;
Indicating member, for if desired adjusting the voltage of described power supply input, sends Indication message so that described regulated power supply is exported described bucking voltage to adjust the voltage of described power input to described regulated power supply.
7. communication node according to claim 6, is characterized in that, described judging unit specifically for:
Judge whether the voltage of described the first output end of main of described collecting unit timing acquiring and the voltage of described the second output end of main meet the error rate that the first pre-conditioned and described bus receives the data that data input pin receives and whether meet second pre-conditioned;
If the voltage of the voltage of described the first output end of main and described the second output end of main does not meet the error rate that described the first pre-conditioned or described bus receives the data that data input pin receives and do not meet described second pre-conditionedly, determine the voltage that need to adjust described power input;
If the voltage of the voltage of described the first output end of main and described the second output end of main meets described first pre-conditioned, the error rate that receives the data that data input pin receives with described bus meets described second pre-conditioned, determines the voltage that does not need to adjust described power input.
8. communication node according to claim 7, is characterized in that, described the first pre-conditioned comprising: the absolute value of the difference of the voltage of the voltage of described the first output end of main and described the second output end of main is greater than the first predetermined threshold value; Described the second pre-conditioned comprising: the error rate that described bus receives the data of data input pin reception is less than the second predetermined threshold value.
9. a communication bus, is characterized in that, described communication bus comprises:
Communication node as described in claim 5 to 8 any one, connect the cable of communication node as described in each and for as described in communication bus the bus power source of operating voltage is provided.
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| CN105388858A (en) * | 2014-08-27 | 2016-03-09 | 现代自动车株式会社 | Operation method of communication node in network |
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| CN103888332B (en) | 2017-11-07 |
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