CN110943868A - Method and system for increasing periodic communication robustness - Google Patents
Method and system for increasing periodic communication robustness Download PDFInfo
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- CN110943868A CN110943868A CN201911278582.9A CN201911278582A CN110943868A CN 110943868 A CN110943868 A CN 110943868A CN 201911278582 A CN201911278582 A CN 201911278582A CN 110943868 A CN110943868 A CN 110943868A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
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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
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0823—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability
- H04L41/0836—Configuration setting characterised by the purposes of a change of settings, e.g. optimising configuration for enhancing reliability to enhance reliability, e.g. reduce downtime
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
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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
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40215—Controller Area Network CAN
Abstract
The invention belongs to the technical field of data communication, and particularly relates to a method and a system for increasing periodic communication robustness, wherein the method for increasing the periodic communication robustness comprises the following steps: initially configuring a communication parameter value and starting communication; performing error detection and state switching on communication; and updating the application interface according to the communication state after detection and state switching, thereby improving the environment adaptability of communication, greatly resisting accidental interference, enhancing the system robustness and improving the fault tolerance of communication error detection and state switching.
Description
Technical Field
The invention belongs to the technical field of data communication, and particularly relates to a method and a system for increasing periodic communication robustness.
Background
Process data transmission in industrial field bus communication is characterized in that device data communication is periodically carried out, wherein the roles of a communication master device and a communication slave device are included, and a communication process is controlled by the communication master device. As shown in fig. 1, a communication device software program often includes a communication module and an application module that work together to implement device functionality.
The fieldbus communication line is often susceptible to external interference, which results in abnormal communication, and when the communication module detects that communication is unavailable, the application module loses the function related to the communication data (depending on the role of the communication data in the application module, the function of the device is affected to different degrees, and even the loss of the whole function of the device may be caused). However, external disturbances on the fieldbus communication lines may be brief, and communication may be unavailable or brief, but conventional communication modules may cause the full functionality of the device to be lost when they detect the unavailability of communication.
Therefore, in view of the above technical problems, it is desirable to design a new method and system for increasing the robustness of periodic communication.
Disclosure of Invention
The invention aims to provide a method and a system for increasing periodic communication robustness.
In order to solve the above technical problem, the present invention provides a method for increasing periodic communication robustness, comprising:
initially configuring a communication parameter value and starting communication;
performing error detection and state switching on communication; and
and updating the application interface according to the communication state after detection and state switching.
Further, the method for initially configuring the communication parameter value and initiating communication includes:
initial values of the respective communication parameters are configured according to the communication characteristics, and communication is started when a communication cycle is reached.
Further, the method for error detection and state switching of communication comprises:
switching the communication state to a corresponding communication state based on the current communication state and error detection, i.e.
When F is 1 and M > R1, switch to F ═ 0;
when F is 0 and M > (R1+ R2), switch to F ═ 1;
when F is 0 and C > G, switch to F ═ 1;
wherein, F is a communication identifier, 1 is normal communication, 0 is label reduction communication, and-1 is communication error; m is the difference of sending or receiving correct counting; c is the correct continuous times of sending or receiving; r1 is response overtime or error, executing label reduction, and the unit is cycle number; r2 is response overtime or error, reports error, and the unit to be reset is the number of cycles; g is that response has no overtime or error, and the response is recovered to normal, and the unit is the number of cycles;
an error is reported when F is-1 and communication is stopped.
Further, the method for switching to the label reduction communication comprises the following steps:
adjusting the value of the corresponding communication parameter to a corresponding parameter value during the label reduction communication according to the communication characteristics;
the method for recovering the normal communication state comprises the following steps:
and restoring the value of the corresponding communication parameter to the initial value according to the communication characteristic.
Further, the method for updating the application interface according to the communication state after detection and state switching comprises the following steps:
configuring the respective parameter values of the application interface in dependence on the communication status, i.e.
And configuring corresponding parameter values of the application interface according to the values of the communication parameters in the normal communication or the standard-reducing communication or the communication error state.
Further, the method for increasing the robustness of periodic communication further comprises:
restarting communication after stopping communication, i.e.
When the value of the communication parameter is modified, initially configuring a communication parameter value according to the modified value of the communication parameter, and starting communication;
when the value of the communication parameter is not modified, the communication parameter value is initially configured and communication is initiated.
Further, the method for increasing the robustness of periodic communication further comprises:
adjusting communication parameters and restarting the communication, i.e.
And when the communication characteristics are modified, modifying the corresponding communication parameters according to the communication characteristics, and configuring new initial values according to the new communication parameters to restart the communication.
In another aspect, the present invention further provides a system for increasing robustness of periodic communication, including:
a communication module and an application module;
the communication module and the application module are suitable for transmitting data;
the communication module includes:
the configuration submodule is used for initially configuring communication parameter values and starting communication;
the detection submodule is used for carrying out error detection on communication;
the adjusting submodule switches the communication state;
the interface submodule updates the application interface according to the communication state after detection and state switching;
the restarting submodule restarts the communication after stopping the communication; and
and modifying the submodule, adjusting communication parameters and restarting communication.
Further, the system for increasing the robustness of periodic communication is suitable for increasing the robustness of periodic communication by adopting the method for increasing the robustness of periodic communication.
The invention has the advantages that the communication parameter value is initially configured and the communication is started; detecting and switching states of communication; and updating the application interface according to the communication after error detection and state switching, thereby improving the environment adaptability of communication, greatly resisting accidental interference, enhancing the system robustness and improving the fault tolerance of communication error detection and state switching.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic block diagram of a prior art communication device software program;
FIG. 2 is a flow chart of a method of increasing periodic communication robustness in accordance with the present invention;
FIG. 3 is a schematic diagram of a method of increasing periodic communication robustness in accordance with the present invention;
FIG. 4 is a schematic diagram of state switching in accordance with the present invention;
FIG. 5 is a flow chart of error detection in accordance with the present invention;
FIG. 6 is a flow chart of state switching in accordance with the present invention;
fig. 7 is a flow chart of adjusting communication parameters in accordance with the present invention;
fig. 8 is a functional block diagram of a system for increasing periodic communication robustness in accordance with the present invention.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Fig. 2 is a flow chart of a method of increasing periodic communication robustness in accordance with the present invention.
As shown in fig. 2, the present embodiment 1 provides a method for increasing robustness of periodic communication, including: initially configuring a communication parameter value and starting communication; performing error detection and state switching on communication; and updating the application interface according to the communication state after detection and state switching, thereby improving the environment adaptability of communication, greatly resisting accidental interference, enhancing the system robustness and improving the fault tolerance of communication error detection and state switching.
In this embodiment, the method for initially configuring a communication parameter value and initiating communication includes: configuring initial values of corresponding communication parameters according to the communication characteristics, starting communication when a communication period is reached, and continuing the communication; for example, in the case of CAN communication, the communication parameter is a transmission cycle, a frame length (a transmission frame length, a reception frame length), and the like, and the initial value in the case of CAN communication may be: the transmission period is 50ms, the length of a sending frame is 8, and the length of a receiving frame is 8; in the case of SPI communication, the communication parameters include a transmission period, a transmission length, a transmission frequency, and the like, and the initial value in the SPI communication may be: transmission period 50ms, transmission length 32 bytes, transmission frequency 1000kbps, and reception length fixed 2 bytes.
FIG. 3 is a schematic diagram of a method of increasing periodic communication robustness in accordance with the present invention;
FIG. 4 is a schematic diagram of state switching in accordance with the present invention;
fig. 5 is a flow chart of error detection in accordance with the present invention.
As shown in fig. 3, 4, and 5, in this embodiment, the method for performing error detection and state switching on communication includes: switching the communication state to a corresponding communication state based on the current communication state and error detection, i.e.
When F is 1 and M > R1 (a down-standard communication condition, i.e., normal communication, communication continues for an error period), switching to F ═ 0 (switching to down-standard communication);
when F is 0 and M > (R1+ R2) (a communication condition is stopped, that is, communication continues to be erroneous while communication is down-scaled), switching to F-1 (switching to communication error);
when F is 0 and C > G (normal communication condition, i.e., when down-standard communication is performed, communication continues for a normal period of time), switching to F ═ 1 (switching to normal communication);
wherein, F is a communication identifier, 1 is normal communication, 0 is label reduction communication, and-1 is communication error; m is the difference of sending or receiving correct counting; c is the correct continuous times of sending or receiving; r1 is response overtime or error, executing label reduction, and the unit is cycle number; r2 is response overtime or error, reports error, and the unit to be reset is the number of cycles; g is that response has no overtime or error, and the response is recovered to normal, and the unit is the number of cycles; when F is-1, reporting an error and stopping communication; the communication process is divided into normal communication and standard reduction communication, certain errors are allowed to exist, standard reduction communication is allowed, fault tolerance is enhanced, and communication robustness is improved; the communication process error detection and judgment are carried out, the 2-level judgment is adopted (except for carrying out error detection during normal communication and carrying out error detection again during standard reduction communication), the normal communication and the standard reduction communication states are respectively treated, and the sensitivity of the error judgment is reduced; by adding the standard-dropping communication function, a communication error is detected in a standard communication state (normal communication), the standard-dropping configuration is executed without judging the communication error, and communication is still performed (standard-dropping communication is performed); when the communication state is degraded, the communication error is still detected, the communication error is given, and the communication is stopped; when the standard lowering communication state is not generated, the communication error is switched back to the normal communication state; the communication can be prevented from being influenced by accidental interference, and the working capacity of the field equipment is ensured as much as possible.
Fig. 6 is a flow chart of state switching according to the present invention.
As shown in fig. 6, in this embodiment, the method for switching to the label reduction communication includes: adjusting the value of the corresponding communication parameter to the corresponding parameter value during the label-reducing communication according to the communication characteristics (label-reducing communication parameters, for example, when CAN communication is performed, the parameter value corresponding to the label-reducing communication CAN be 100ms of transmission cycle, 4 of transmission frame length and 4 of receiving frame length; the parameter value corresponding to the label-reducing communication CAN be 100ms of transmission cycle, 16 bytes of transmission length, 100kbps of transmission frequency and 2 bytes of receiving length fixed) during SPI communication; the method for recovering the normal communication state comprises the following steps: restoring the value of the corresponding communication parameter to an initial value (normal communication parameter) according to the communication characteristic; the communication configuration can be changed (the value of the communication parameter is adjusted), the communication configuration is dynamically changed, and the flexibility of communication is improved.
In this embodiment, the method for updating an application interface according to state communication after detection and state switching includes: and configuring the corresponding parameter values of the application interfaces according to the communication states (normal communication, standard reduction communication and communication error), namely configuring the corresponding parameter values of the application interfaces according to the values of the communication parameters in the normal communication or standard reduction communication or communication error states.
In this embodiment, the method for increasing the robustness of periodic communication further includes: restarting communication after stopping communication, namely when the value of the communication parameter is modified, initially configuring the value of the communication parameter according to the modified value of the communication parameter, and starting communication; when the value of the communication parameter is not modified, the communication parameter value is initially configured and communication is initiated.
Fig. 7 is a flow chart of adjusting communication parameters in accordance with the present invention;
as shown in fig. 7, in this embodiment, the method for increasing the robustness of periodic communication further includes: and adjusting communication parameters and restarting communication, namely modifying corresponding communication parameters according to the communication characteristics when the communication characteristics are modified, and configuring new initial values according to the new communication parameters to restart communication (for example, when the CAN communication is modified into SPI communication, the original communication parameters of the CAN communication are transmission cycles, frame lengths and the like, the communication parameters are modified into communication parameters of the SPI communication, such as transmission cycles, transmission lengths, transmission frequencies and the like, and the communication is restarted according to the modified parameters and is kept in communication).
In the present embodiment, CAN communication and SPI communication are explained as examples, that is
CAN communication:
setting a communication identifier as F (when F is 1: normal communication, 0: denormal communication, -1: communication error) (F is initially 1);
[ communication parameters: transmission period, frame length
The transmission period is S (unit: millisecond; normal communication: 50 ms; standard reduction communication 100 ms);
sending a frame ID number of D1 (normal communication 0x11: frame length 8; standard reduction communication 0x12: frame length 4);
receiving a frame ID number of D2 (normal communication 0x21: frame length 8; standard reduction communication 0x22: frame length 4);
[ judgment parameters ]
In response to the timeout/error, a denormalization R1 (unit: number of cycles; e.g., constant value 4) is performed;
responding to timeout/error, reporting error, waiting to reset R2 (unit: number of cycles; e.g. constant value 4);
responding no time-out/error, recovering normal G (unit: cycle number; such as fixed value 8);
[ Process variables ]
The correct count difference M for transmission/reception (obtained by transmission/reception statistics and reception check judgment);
the number of correct consecutive times of transmission/reception C (unit: number of cycles);
then:
when M is greater than 1, C is cleared;
when M is less than or equal to 1 and correct 1 frame is received, C accumulates 1;
when F is 1 and M > R1, F is 0 (changing the value of F to 0);
when F is 0, and M > (R1+ R2), F ═ 1;
when F is 0, and C > G, F ═ 1;
when F is 0, D1 ═ 0x 12; d2 ═ 0x 22; s is 100;
when F is 1, D1 ═ 0x 11; d2 ═ 0x 21; s-50.
SPI communication:
setting a communication identifier as F (when F is 1: normal communication, 0: denormal communication, -1: communication error) (F is initially 1);
[ communication parameters: transmission period, transmission length, transmission frequency ];
when the transmission period is F, the transmission period is S (unit: millisecond; normal communication 50 ms; standard reduction communication 100 ms);
when the transmission length F is L1 (unit: byte; 32 bytes for normal communication; 16 bytes for beacon drop communication);
when the reception length F is L2 (unit: byte; fixed 2 bytes);
when F is V (unit: bps; normal communication 1000 kbps; standard-reduced communication 100 kbps);
[ judgment parameters ]
In response to the timeout/error, a denormalization R1 (unit: number of cycles; e.g., constant value 4) is performed;
responding to timeout/error, reporting error, waiting to reset R2 (unit: number of cycles; e.g. constant value 4);
responding no time-out/error, recovering normal G (unit: cycle number; such as fixed value 8);
[ Process variables ]
The correct count difference M for transmission/reception (obtained by transmission/reception statistics and reception check judgment);
the number of correct consecutive times of transmission/reception C (unit: number of cycles);
then:
when M is greater than 1, C is cleared;
when M is less than or equal to 1 and correct 1 frame is received, C accumulates 1;
when F is 1, and M > R1, F is 0;
when F is 0, and M > (R1+ R2), F ═ 1;
when F is 0, and C > G, F ═ 1;
when F is 0, S is 100; l1 ═ 16; v is 100;
when F is 1, S is 50; l1 ═ 32; v1000.
In this embodiment, a fault handling model may be constructed:
transmitting/receiving correct counting difference M;
the number of correct consecutive transmission/reception times C;
when M is greater than 1, C is cleared;
when M is less than or equal to 1 and correct 1 frame is received, C accumulates 1;
normal/denormal conversion model:
the communication identifier is F (when F is 1: normal communication, 0: denormal communication, -1: communication error) (F is initially 1);
in response to the timeout/error, a denormalization R1 (unit: number of cycles; e.g., constant value 4) is performed;
responding to timeout/error, reporting error, waiting to reset R2 (unit: number of cycles; e.g. constant value 4);
responding no time-out/error, recovering normal G (unit: cycle number; such as fixed value 8);
when F is 1, and M > R1, F is 0;
when F is 0, and M > (R1+ R2), F ═ 1;
when F is 0, and C > G, F ═ 1;
the communication parameters may be defined in terms of various communication characteristics.
Example 2
Fig. 8 is a functional block diagram of a system for increasing periodic communication robustness in accordance with the present invention.
As shown in fig. 8, based on embodiment 1, this embodiment 2 further provides a system for increasing robustness of periodic communication, including: a communication module and an application module; the communication module and the application module are suitable for transmitting data; the communication module includes: the configuration submodule is used for initially configuring communication parameter values and starting communication; the detection submodule is used for carrying out error detection on communication; the adjusting submodule switches the communication state; the interface submodule updates the application interface according to the communication state after detection and state switching; the restarting submodule restarts the communication after stopping the communication; modifying the submodule, adjusting the communication parameters and restarting the communication; and the data transmission is realized by connecting the application interface with the application module.
In this embodiment, the system for increasing the robustness of periodic communication is suitable for increasing the robustness of periodic communication by using the method for increasing the robustness of periodic communication described in embodiment 1.
In summary, the communication parameter value is initially configured, and communication is started; detecting and switching states of communication; and updating the application interface according to the communication after error detection and state switching, thereby improving the environment adaptability of communication, greatly resisting accidental interference, enhancing the system robustness and improving the fault tolerance of communication error detection and state switching.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. A method for increasing robustness of periodic communications, comprising:
initially configuring a communication parameter value and starting communication;
performing error detection and state switching on communication; and
and updating the application interface according to the communication state after detection and state switching.
2. The method for increasing robustness of periodic communications of claim 1,
the method for initially configuring the communication parameter value and starting communication comprises the following steps:
initial values of the respective communication parameters are configured according to the communication characteristics, and communication is started when a communication cycle is reached.
3. The method for increasing robustness of periodic communications according to claim 2,
the method for error detection and state switching of communication comprises the following steps:
switching the communication state to a corresponding communication state based on the current communication state and error detection, i.e.
When F is 1 and M > R1, switch to F ═ 0;
when F is 0 and M > (R1+ R2), switch to F ═ 1;
when F is 0 and C > G, switch to F ═ 1;
wherein, F is a communication identifier, 1 is normal communication, 0 is label reduction communication, and-1 is communication error; m is the difference of sending or receiving correct counting; c is the correct continuous times of sending or receiving; r1 is response overtime or error, executing label reduction, and the unit is cycle number; r2 is response overtime or error, reports error, waits to reset, and the unit is cycle number; g is that response has no overtime or error, and the response is recovered to normal, and the unit is the number of cycles;
an error is reported when F is-1 and communication is stopped.
4. The method for increasing robustness of periodic communications according to claim 3,
the method for switching to the label lowering communication comprises the following steps:
adjusting the value of the corresponding communication parameter to a corresponding parameter value during the label reduction communication according to the communication characteristics;
the method for recovering the normal communication state comprises the following steps:
and restoring the value of the corresponding communication parameter to the initial value according to the communication characteristic.
5. The method for increasing robustness of periodic communications according to claim 4,
the method for updating the application interface according to the communication state after detection and state switching comprises the following steps:
configuring the respective parameter values of the application interface in dependence on the communication status, i.e.
And configuring corresponding parameter values of the application interface according to the values of the communication parameters in the normal communication or the standard-reducing communication or the communication error state.
6. The method for increasing robustness of periodic communications according to claim 5,
the method for increasing the robustness of periodic communication further comprises the following steps:
restarting communication after stopping communication, i.e.
When the value of the communication parameter is modified, initially configuring a communication parameter value according to the modified value of the communication parameter, and starting communication;
when the value of the communication parameter is not modified, the communication parameter value is initially configured and communication is initiated.
7. The method for increasing robustness of periodic communications of claim 6,
the method for increasing the robustness of periodic communication further comprises the following steps:
adjusting communication parameters and restarting the communication, i.e.
And when the communication characteristics are modified, modifying the corresponding communication parameters according to the communication characteristics, and configuring new initial values according to the new communication parameters to restart the communication.
8. A system for increasing robustness of periodic communications, comprising:
a communication module and an application module;
the communication module and the application module are suitable for transmitting data;
the communication module includes:
the configuration submodule is used for initially configuring communication parameter values and starting communication;
the detection submodule is used for carrying out error detection on communication;
the adjusting submodule switches the communication state;
the interface submodule updates the application interface according to the communication state after detection and state switching;
the restarting submodule restarts the communication after stopping the communication; and
and modifying the submodule, adjusting communication parameters and restarting communication.
9. The system for increasing robustness of periodic communications according to claim 8,
the system for increasing the robustness of periodic communication is suitable for achieving the increased robustness of periodic communication by adopting the method for increasing the robustness of periodic communication as set forth in any one of claims 1 to 7.
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| US20110206042A1 (en) * | 2010-02-23 | 2011-08-25 | Moshe Tarrab | Systems and methods for implementing a high throughput mode for a moca device |
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