CN104253730A - Method for running communication device - Google Patents
Method for running communication device Download PDFInfo
- Publication number
- CN104253730A CN104253730A CN201410284957.3A CN201410284957A CN104253730A CN 104253730 A CN104253730 A CN 104253730A CN 201410284957 A CN201410284957 A CN 201410284957A CN 104253730 A CN104253730 A CN 104253730A
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- China
- Prior art keywords
- user
- data rate
- communicator
- constructed
- users
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/42—Loop networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/4013—Management of data rate on the bus
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
- H04L12/4035—Bus networks with centralised control, e.g. polling in which slots of a TDMA packet structure are assigned based on a contention resolution carried out at a master unit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Quality & Reliability (AREA)
- Communication Control (AREA)
- Small-Scale Networks (AREA)
Abstract
The invention relates to a method for running a communication device and the communication device. In the method, the function of a transmission host is described. Communication between at least two users (4, 6, 8, 10) in the communication device at one data rate, one user(4, 6, 8, 10) is configured as a host. The users (4, 6, 8, 10) serving as the host dynamically adapts the data rate.
Description
Technical field
The present invention relates to a kind of method of the communicator for running especially annular, communicating with a data rate between users in this communicator.The invention still further relates to such communicator.
Background technology
In the field of automotive engineering, adopt such as SPI(serial peripheral interface (Serial Peripheral Interface) to transmit data between the logic module in control appliance) serial line interface, wherein said logic module can be constructed to integrated circuit (IC, Integrated Circuit).
The user that this standard to describe is constructed to main frame be constructed to two-way between the different user of machine, synchronous with transfer of data that is serial.At this, interface is included in described main frame and one from the circuit of at least three between machine, and this is generally two data circuits and a clock line.When multiple from machine, each in these users all needs additional the choosing or select line of main frame.
SPI interface makes it possible to implement daisy topology or bus topology.Applying in SPI interface with daisy topology, i.e. ring topology, occur the very long stand-by period, this form can not be used efficiently in motor vehicle (Kfz) control appliance for this reason.
Especially it should be noted that in some cases SPI interface be not suitable for the transmission of time critical manipulation signal with the requirement of real time of competent current security critical application (such as ESP).SPI interface is often utilized only also to carry out the exchange of diagnosis and state information.Time critical manipulation signal is generally transferred to the manipulation component of actuator when using timer unit and/or proprietary interface with high expending and/or transmits from the analysis circuit of transducer.
With in bus topology form application SPI interface, the high interference effect obtaining signal integrity worse and worse when higher data rate and cause due to the EMV characteristic of difference.In addition be transmitted with only sending signal and clock signal synchronization, and the phase locked transmission of Received signal strength is owing to more and more may being difficult to development and may causing the mistake in transfer of data from the internal delay time machine when high data rate.
By a kind of known method for realizing communication in ring bus with the minimized stand-by period of publication DE 10 2,010 041 427 A1.In the method, the user of the communicator of the annular of serial and the connected in series of node is thus carried out.The transfer of data wherein can carrying out from user to user with the delay of at least one bit duration, the packet that may comprise message is thus transmitted with the very little stand-by period between users.In the case, arrange a main frame and multiple from machine, wherein packet is transmitted from from machine to from machine, wherein by each address information changing this packet from machine.It is contemplated that equally, without the change situation of each address information from machine, realize communication, its mode is each fixed address obtaining oneself from machine ring.
Summary of the invention
As background, a kind of method and one communicator according to claim 7 with the feature of claim 1 is proposed.Embodiment is obtained by dependent claims and specification.
The method proposed makes it possible to carry out data communication with the data rate of dynamically changeable between at least two users in circular communication device, can maintain the synchronous of communicator and the whole system that is tied to of this communicator thus thus in the state with small data flow energy efficient.One of user is usually constructed to main frame or has host functionalities.Other user is typically used as from machine.
Main frame/from the form of machine representation of concept to the graded manaegment of the access of common resource the communicator comprising multiple user.When multiple user send simultaneously or access resources time, can not transmit.In order to solve this problem, distribute host functionalities to one of user, this user is main frame thus, so other users all are from machine.This main frame has the authority without inviting accessing resource as unique user.This main frame controls thus or arranges access rights.
The feature of the method proposed is, carrys out dynamically adaptive described data rate according to corresponding running status by main frame.
The advantage of described method is in the circular communication device with continuous print transfer of data, especially for the system of energy efficient provides the low power operational mode or running status with little power consumption.Low power operational mode means at this and dynamically changes data rate, namely such as reduces data rate, and does not turn off each user.
The method and apparatus being used for carrying out data communication between the user in circular communication device is especially proposed, as it is such as described in publication DE 10 2,010 041 427 A1.At this, user is with the arranged in form of ring topology, and these users can utilize a small amount of lead-in wire to be connected by point to point connect thus.One of user, such as microcontroller play main frame effect, do not need bus arbitration thus.Be such as a discrete assembly or multiple discrete assembly, such as ASIC from machine, it must be controlled by the logical circuit of such as microcontroller or other ASIC.
Main frame sends continuous print data flow.By the possibility of continuous synchronization, do not need other system clock from machine yet.
According to prior art, data rate was configured before initialization starts in main frame.The maximum data rate of the communication in ring between user is limited to the maximal rate of the slowest user.Can be in operation now and desirably change or adaptation data speed.
The data rate being also referred to as message transmission rate is the data volume via transmission channel in chronomere.
Other advantage of the present invention and configuration are obtained by specification and accompanying drawing.
Should be appreciated that feature that is above-mentioned and that also will set forth with the combination illustrated respectively and with other combination or can not only use individually below, and do not depart from the scope of the present invention.
Accompanying drawing explanation
Fig. 1 illustrates the execution mode of communicator of the present invention with schematic diagram.
Fig. 2 illustrates the possible flow process of method with flow chart.
Embodiment
The present invention schematically shows in the accompanying drawings according to execution mode and is at large described with reference to the accompanying drawings.
The execution mode of the communicator 2 schematically shown in FIG is constructed to annular, and comprises the user that multiple series connection connects successively.Reference numeral 4 represents the first user being used as current hosts, and Reference numeral 6 represents the second user, and Reference numeral 8 represents the 3rd user, and Reference numeral 10 represents the n-th user, and they are interconnected via the fragment 12 of circuit.User 6,8 and 10 is used as from machine.In addition, first user 4 comprises the first digital serial interface 14 for sending packet, and first user 4 utilizes this first digital serial interface according to defining with the top of described circuit or being connected with end.
In addition, the second user 4 comprises the second digital serial interface 16 for receiving packet, and first user 4 utilizes this second digital serial interface 16 according to defining with the end of described circuit or being connected with top.First serial line interface 14 is connected with system clock and watch 18 at this.Second serial line interface 16 is connected with the module 20 for detecting phase angle value.In addition, first user 4 is connected with quartz (controlled) oscillator 22.
User 6,8, and each in 10 has the digital serial interface be constructed to from machine interface 24, and described digital serial interface is connected 12 respectively and connects and be connected with data circuit thus with two.There is connection between two users thus.In addition, each serial is connected from machine interface 24 with clock recovery module 21, can derive local system clock 19 from this clock recovery module.
In order to communicator 2 is provided user 4,6,8 and 10 between communication, to specify from the initial interface 14s of main frame 4 by bit stream 26 from the serial of user 6,8,10 from machine interface 24 to serial from machine interface 24 ground as packet message transfer continuously.When packet arrive last user 6,8,10(this be the n-th user 10) after, this packet is from the end interface 16 being sent to first user 4 from machine interface 24 of last user 10.
Packet is sent to the second user 6 from first user 4, and is sent to user 8 from user 6 successively, user 10 to the last, and is sent to first user 4 from last user 10.All users of packet ergodic communication device 2 thus.Message can be sent at least one user 6,8,10 Frame utilized and comprise the address field with address.Specify that the received address value with the Frame of message to be transmitted is changed fixing value by each user 6,8,10, such as, by subtracting each other or being added, and hand to next user 6,8,10.In the case, address value is changed according to the algorithm set for this reason in an identical manner by each user 6,8,10.In shown communicator 2, user 6,8, and 10 have identical local address.This external all user 6,8, deposits the identical algorithms for communication interface in 10.At this, be only typically identical for the module of interchip communication, user can comprise very different functions in addition.
Present regulation, first user 4 or main frame are designed to be in operation and carry out adaptation to data rate.This can carry out continuously or with the time interval given in advance.
The possible flow process of the method is shown with flow chart in fig. 2.In first step 50, communicate with a data rate in the communicator with multiple user, user's hosted in described multiple user, and other user is used as from machine.In next step 52, Host Detection running status.This running status of system that can be communicator or also have this communicator to be tied to.This running status can be given by the outside parameter of such as external temperature and other environmental condition in principle, but also can come given by the inside parameter of such as energy ezpenditure, used heat etc.The state that running status can also be determined by the specific run situation at communicator or whole system is given.
Now, in next step 54, the adaptation of data rate is carried out by main frame.This can mean: this data rate is reduced or is also enhanced.The record of one or more running status can continuously or with the time interval carry out.The adaptation of data rate can independently to this continuously same or with the time interval carry out.
Claims (9)
1., for running the method for circular communication device (2), in this communicator, occur at least two users (4,6 with a data rate, 8,10) communication between, one of them user (4,6,8,10) be constructed to, by hosted, wherein use this user (4,6 of hosted, 8,10) dynamically adaptive described data rate.
2. method according to claim 1, wherein according to running status dynamically adaptive described data rate.
3. method according to claim 1 and 2, wherein said data rate is reduced.
4. method according to claim 1 and 2, wherein said data rate is enhanced.
5., according to the method one of Claims 1-4 Suo Shu, wherein the adaptation of data rate is carried out continuously.
6. according to the method one of Claims 1-4 Suo Shu, wherein to the adaptation of data rate with the time interval carry out.
7. communicator, its be built as annular and be especially constructed to perform according to the method one of claim 1 to 6 Suo Shu, wherein this communicator (2) comprises at least two users (4,6,8,10), one of them user (4,6,8,10) be constructed to main frame, this user is constructed to dynamically fit in this communicator (2) and carries out the utilized data rate that communicates.
8. communicator according to claim 7, wherein these users (4,6,8,10) are interconnected via point to point connect.
9., according to the communicator one of claim 6 to 8 Suo Shu, this user (4,6,8,10) being wherein constructed to main frame has quartz (controlled) oscillator (22).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013211999.2 | 2013-06-25 | ||
| DE102013211999.2A DE102013211999A1 (en) | 2013-06-25 | 2013-06-25 | Method for operating a communication arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104253730A true CN104253730A (en) | 2014-12-31 |
Family
ID=52106124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410284957.3A Pending CN104253730A (en) | 2013-06-25 | 2014-06-24 | Method for running communication device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN104253730A (en) |
| DE (1) | DE102013211999A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075855A (en) * | 2006-05-19 | 2007-11-21 | 深圳迈瑞生物医疗电子股份有限公司 | Method for automatically adapting series telecommunication between host and different peripheral equipments |
| CN101110818A (en) * | 2007-07-12 | 2008-01-23 | 深圳市融合视讯科技有限公司 | Optimization method facing data protocol of non-connected user |
| US20100158037A1 (en) * | 2007-07-04 | 2010-06-24 | Airbus Deutschland Gmbh | Deterministic communication system |
| CN101989943A (en) * | 2009-07-31 | 2011-03-23 | Abb研究有限公司 | Data transmission in a ring-type communication network |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102010041427A1 (en) | 2010-09-27 | 2012-03-29 | Robert Bosch Gmbh | Method for transmitting data |
-
2013
- 2013-06-25 DE DE102013211999.2A patent/DE102013211999A1/en not_active Withdrawn
-
2014
- 2014-06-24 CN CN201410284957.3A patent/CN104253730A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101075855A (en) * | 2006-05-19 | 2007-11-21 | 深圳迈瑞生物医疗电子股份有限公司 | Method for automatically adapting series telecommunication between host and different peripheral equipments |
| US20100158037A1 (en) * | 2007-07-04 | 2010-06-24 | Airbus Deutschland Gmbh | Deterministic communication system |
| CN101110818A (en) * | 2007-07-12 | 2008-01-23 | 深圳市融合视讯科技有限公司 | Optimization method facing data protocol of non-connected user |
| CN101989943A (en) * | 2009-07-31 | 2011-03-23 | Abb研究有限公司 | Data transmission in a ring-type communication network |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102013211999A1 (en) | 2015-01-08 |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20141231 |
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| RJ01 | Rejection of invention patent application after publication |