CN115297026B - Communication system and detection method thereof - Google Patents
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- 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
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Abstract
The invention provides a communication system and a detection method thereof, wherein the communication system comprises a control device and a controlled device communicated with the control device, and the detection method is applied to the control device side and comprises the following steps: detecting a timing control signal, wherein the timing control signal comprises a plurality of repeated and continuous repeated units; transmitting first data to the controlled device based on the detected data that the drawn waveform is consistent with the waveform in the repeating unit; and determining a detection result according to a matching result of the first data and the second data fed back by the controlled equipment.
Description
Technical Field
The invention relates to the technical field of communication control, in particular to a communication system and a detection method thereof.
Background
In the related art, most of the tests of the communication system are verification tests in the initial stage of the construction of the communication system, that is, judging whether the communication system can communicate.
However, as the communication system is used and operated, the communication system may fail, so that in order to timely find an abnormality in the communication system, a long-term uninterrupted test is required for communication of the communication system, so that a communication failure is timely found, and the failure is timely adjusted, and a long-term uninterrupted test cannot be implemented by a verification test in an initial stage of construction of the communication system in the present stage.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art or related art.
To this end, a first aspect of the present invention is to provide a detection method of a communication system.
A second aspect of the present invention is to provide a communication system.
In view of this, according to a first aspect of the present invention, there is provided a detection method of a communication system including a control device and a controlled device in communication with the control device, the detection method being applied to a control device side, comprising: detecting a timing control signal, wherein the timing control signal comprises a plurality of repeated and continuous repeated units; transmitting first data to the controlled device based on the detected data that the drawn waveform is consistent with the waveform in the repeating unit; and determining a detection result according to a matching result of the first data and the second data fed back by the controlled equipment.
The technical scheme of the application provides a detection method of a communication system, and the communication system can be tested for a long time by running the detection method, so that the determination of whether the communication system is stable for a long time or not is realized.
In the technical scheme, the fault detection in the communication system is realized, and meanwhile, the fault in the communication system can be found in time, so that the fault in the communication system is convenient to maintain, and the influence of the fault of the communication system on the use of the system is reduced.
In addition, the detection method of the communication system provided by the application has the following additional technical characteristics.
In the above technical solution, further includes: starting timing based on the detected data that the drawn waveform is consistent with the waveform in the repeating unit; and receiving the second data under the condition that the timing duration does not reach the first duration.
In this solution, it is defined that the control device is able to receive the second data within a reserved time window, i.e. the time from the start of the timing to the time duration reaching the first time duration in the above. The communication system test is standardized due to the setting of the first duration, so that the detection method has reusability, and different use scenes are adapted.
In any of the above technical solutions, the method further includes: and matching the first data with the second data in a second time period after the timing time period reaches the first time period so as to determine a matching result.
In the technical scheme, a time window is divided for matching between the first data and the second data, wherein the equipment with the second duration provides comparison time for comparing the first data with the second data, so that the test of the communication system can complete the comparison within the second duration, and the division of the time window enables the communication test to be more standardized, and avoids the disorder of the communication test under the long-term test.
In any of the above technical solutions, the method further includes: acquiring historical communication data of the control equipment and the controlled equipment, wherein the historical communication data comprises a first moment when the control equipment sends first data to the controlled equipment and a second moment when the controlled equipment feeds back second data to the control equipment; determining the waiting time length of the control equipment according to the first time and the second time; and determining a first duration according to the waiting duration.
In the technical scheme, the first time length is determined according to the waiting time length, namely, a determination basis of the first time length is provided, and in the process, the reasonability of the value of the first time length is improved.
The waiting time length is determined based on the historical communication data, so that the first time length can be dynamically adjusted according to the historical communication data, and the reliability of the communication test is improved.
In any of the above solutions, the first period is longer than the waiting period.
In the technical scheme, the first time length is limited to be longer than the waiting time length, so that the control equipment can be ensured to have enough time to receive the second data fed back by the controlled equipment before data matching is performed, meanwhile, the occurrence probability that the control equipment receives the second data after the first time length is reduced, and the reliability of communication test is improved.
In any of the above solutions, the duration of each repeating unit is a third duration, where the third duration is greater than a sum of the first duration and the second duration.
In the technical scheme, the third time length is larger than the sum value of the first time length and the second time length so as to realize one communication test in the time length corresponding to each repeating unit, and because the third time length is larger than the sum value of the first time length and the second time length, namely the third time length minus the first time length and the second time length, the third time length is still larger than zero, a part of time length is remained after each test so as to distinguish the front communication test and the rear communication test, the probability of confusion between the two tests is reduced, and the reliability of long-term test of the communication system is ensured.
In any of the above technical solutions, the first data is transformed once every fourth time interval, and the first data is transformed according to a preset waveform; wherein the fourth time period is equal to the time period of each repeating unit.
In the technical scheme, the first data is limited to change along with time change, and because the first data is changed once every fourth time interval, the first data can be ensured to be unchanged when in each communication test, and the detection result is determined by using the matching result of the first data and the second data under the communication test.
Because the first data in each communication test is continuously changed, overlapping of two adjacent communication tests can be avoided, and the accuracy of the test is further affected.
In any of the above technical solutions, determining a detection result according to a matching result of the first data and the second data fed back by the controlled device specifically includes: determining a communication anomaly based on the first data not matching the second data; and outputting statistical information of communication abnormality.
In the technical scheme, when the first data and the second data are not matched, the second data are considered to be the data which the controlled equipment should feed back when the control equipment sends to the controlled equipment, and obviously, in the case, the communication between the control equipment and the controlled equipment is abnormal, at this time, the statistical information of the communication abnormality is output, so that maintenance personnel can maintain the communication abnormality according to the statistical information, and the influence of the communication abnormality on the communication is reduced.
In any of the above embodiments, the statistical information includes at least one of: the time information of occurrence of communication abnormality, the accumulated times of occurrence of communication abnormality after the communication system is started up, and the accumulated times of occurrence of communication abnormality after the communication system is used up.
In the technical scheme, the content contained in the statistical information is specifically provided, wherein under the condition that the statistical information contains the time information of occurrence of communication abnormality, maintenance personnel can directly position the position of occurrence of the communication abnormality according to the statistical information, so that targeted maintenance is realized.
In the technical scheme, the statistical information comprises the accumulated times of communication abnormality after the communication system is started up, so that the fault statistical condition of the communication system can be known, and similarly, the maintenance personnel can evaluate the health state of the communication system under the condition that the statistical information comprises the accumulated times of the communication abnormality after the communication system is used up.
In any of the above solutions, the control device includes: a programmable logic controller.
According to a second aspect of the present invention, there is provided a communication system comprising a control device and a controlled device in communication with the control device for implementing a detection method of a communication system as described above.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The foregoing and/or additional aspects and advantages of the invention will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:
Fig. 1 shows one of flow diagrams of a detection method of a communication system in an embodiment of the present invention;
FIG. 2 shows a schematic diagram of a test between a control device and a controlled device in an embodiment of the invention;
FIG. 3 is a schematic diagram showing a timing control square wave, a data change period, and a data comparison timing in an embodiment of the present invention;
FIG. 4 is a second flow chart of a detection method of the communication system according to the embodiment of the invention;
fig. 5 shows a schematic diagram of a triangular wave in an embodiment of the invention.
Detailed Description
So that the manner in which the above recited aspects, features and advantages of the present application can be understood in detail, a more particular description of the application, briefly summarized below, may be had by reference to the appended drawings. It should be noted that, without conflict, the embodiments of the present application and features in the embodiments may be combined with each other.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Communication systems and detection methods thereof according to some embodiments of the present invention are described below with reference to fig. 1 to 5.
In one embodiment of the present application, as shown in fig. 1, there is provided a detection method of a communication system including a control device and a controlled device in communication with the control device, the detection method being applied to a control device side, wherein the detection method includes:
Step 102, detecting a time sequence control signal, wherein the time sequence control signal comprises a plurality of repeated and continuous repeated units;
104, transmitting first data to the controlled device based on that the waveform drawn by the detected data is consistent with the waveform in the repeating unit;
and step 106, determining a detection result according to the matching result of the first data and the second data fed back by the controlled equipment.
The embodiment of the application provides a detection method of a communication system, and the communication system can be tested for a long time by running the detection method, so that the determination of whether the communication system is reliable in long-term stability or not is realized.
In the embodiment, the fault detection in the communication system is realized, and meanwhile, the fault in the communication system can be found in time, so that the fault in the communication system is convenient to maintain, and the influence of the fault of the communication system on the use of the system is reduced.
In one embodiment, a control device may be understood as a device for performing control, i.e. a device for controlling the operation of a controlled device, and correspondingly a controlled device, i.e. a device under control, as opposed to a control device, in one embodiment the control device and the controlled device may replace identities, e.g. the controlled device is transformed into a control device, the control device is transformed into a controlled device.
For example, the control device may be an upper computer, and the controlled device may be an execution terminal, where the execution terminal may be selected according to actual needs, such as selecting a programmable logic controller, a touch screen, a frequency converter, a servo controller, a robot, and the like.
In the above embodiment, the timing control signal is composed of a plurality of repeated and continuous repeated units, and based on this, each repeated unit can be used as a trigger condition for one communication system test, that is, each repeated unit performs one communication test. The time sequence control signal can be continued in a time length, so that the embodiment of the application can realize long-term test of the communication system.
In the above embodiment, in the testing process of the communication system, the control device sends the first data to the controlled device, and under the condition that the communication is normal, the controlled device feeds back the second data to the control device, if the fed back second data is matched with the sent first data, it can be determined that the communication between the control device and the controlled device is normal, otherwise, the communication between the control device and the controlled device is abnormal, based on which the single test of the communication system can be implemented.
In the above embodiment, the waveforms drawn by the detected data are compared with the waveforms in the repeating units, if the waveforms are consistent, the triggering condition of the communication system test is considered to be satisfied, so that the communication test is executed once, and the accuracy of the communication system test is improved by the arrangement of the comparison of the waveforms.
In one embodiment, the waveform in the repeating unit may be changed from a low level signal to a high level signal, or may be changed from a high level signal to a low level signal, or may be changed from a low level signal to a high level signal, wherein the waveform in the repeating unit may be selected according to the actual use requirement, and is not limited herein.
In addition, the detection method of the communication system provided by the application has the following additional technical characteristics.
In the above embodiment, further comprising: starting timing based on the detected data that the drawn waveform is consistent with the waveform in the repeating unit; and receiving the second data under the condition that the timing duration does not reach the first duration.
In this embodiment it is defined that the control device is able to receive the second data within a reserved time window, i.e. the time from the start of the timing to the time duration reaching the first time duration in the above. The communication system test is standardized due to the setting of the first duration, so that the detection method has reusability, and different use scenes are adapted.
In one embodiment, the first time length may be adjusted according to actual usage requirements, so that the test scheme is ductile, and thus adapts to different usage scenarios to the greatest extent.
In addition, the first time length is adjustable, so that the detection method is not limited to a specific use scene, and can realize multiple paths of parallel and nested use, thereby realizing the test of a more complex system.
In any of the foregoing embodiments, further comprising: and matching the first data with the second data in a second time period after the timing time period reaches the first time period so as to determine a matching result.
In this embodiment, a time window is divided for matching between the first data and the second data, where the device of the second duration provides a comparison time for comparing between the first data and the second data, so that the test of the communication system can complete the comparison within the second duration, and the division of the time window makes the communication test more standardized, and avoids the disorder of the communication test under the long-term test.
In one embodiment, the second duration may be adjusted according to actual usage requirements, so that the test scheme is ductile, and thus adapts to different usage scenarios to the greatest extent.
In any of the foregoing embodiments, further comprising: acquiring historical communication data of the control equipment and the controlled equipment, wherein the historical communication data comprises a first moment when the control equipment sends first data to the controlled equipment and a second moment when the controlled equipment feeds back second data to the control equipment; determining the waiting time length of the control equipment according to the first time and the second time; and determining a first duration according to the waiting duration.
In this embodiment, the first time length is determined according to the waiting time length, that is, a basis for determining the first time length is given, and in this process, the reasonability of the value of the first time length is improved.
The waiting time length is determined based on the historical communication data, so that the first time length can be dynamically adjusted according to the historical communication data, and the reliability of the communication test is improved.
Specifically, considering that the test of the communication system includes both transmission of data and reception of data, by defining that the history communication data includes a first time when the first data is transmitted and a second time when the second data is received, a time period required for the control device to transmit the first data to receive the second data, that is, a waiting time period in the above, is determined so as to determine the first time period according to the waiting time period, based on the first time period and the second time period.
In one embodiment, the waiting period is the difference between the second time and the first time.
In one embodiment, where the historical communication data includes a plurality of communications, the wait time is the maximum difference in the plurality of communications.
In any of the above embodiments, the first time period is greater than the waiting time period.
In this embodiment, by defining the first time period to be longer than the waiting time period, so as to ensure that the control device has enough time to receive the second data fed back by the controlled device before performing data matching, at the same time, the probability that the control device receives the second data only after the first time period is reduced, and the reliability of the communication test is improved.
In any of the foregoing embodiments, the duration of each repeating unit is a third duration, wherein the third duration is greater than a sum of the first duration and the second duration.
In this embodiment, by defining the third time period to be greater than the sum of the first time period and the second time period so as to implement a communication test in the time period corresponding to each repeating unit, since the third time period is greater than the sum of the first time period and the second time period, that is, the third time period minus the first time period and the second time period, the third time period is still greater than zero, so that after each test, a part of time period remains, so as to distinguish between two communication tests, the probability of confusion between the two tests is reduced, and the reliability of the long-term test of the communication system is ensured.
In any of the above embodiments, the first data is transformed once every fourth time interval, and the first data is transformed according to a preset waveform; wherein the fourth time period is equal to the time period of the repeating unit.
In this embodiment, it is defined that the first data changes with time, and since the first data changes once every fourth period, it is ensured that the first data is unchanged at each communication test, and thus the detection result is determined by using the matching result of the first data and the second data under the communication test.
Because the first data in each communication test is continuously changed, overlapping of two adjacent communication tests can be avoided, and the accuracy of the test is further affected.
In one embodiment, the preset waveform may be selected according to practical needs, such as triangular wave, sine wave, square wave, oblique wave, etc.
In one embodiment, the preset waveform may be a continuous and repeated waveform such that the first data periodically varies according to the preset waveform.
In one embodiment, the first data in the preset waveform fluctuates between a maximum value and a minimum value.
In any of the foregoing embodiments, determining a detection result according to a matching result of the first data and second data fed back by the controlled device specifically includes: determining a communication anomaly based on the first data not matching the second data; and outputting statistical information of communication abnormality.
In this embodiment, when the first data and the second data are not matched, it is considered that the second data is not the first data that the control device should feed back when sending to the controlled device, and obviously, in this case, the communication between the control device and the controlled device is abnormal, at this time, by outputting the statistical information of the communication abnormality, so that the maintainer can maintain the communication abnormality according to the statistical information, and the influence of the communication abnormality on the communication is reduced.
In one embodiment, the first data and the second data may be data that occurs in pairs, such as when the first data is "1234", the second data is "4321", or when the first data is "4321", the second data is "1234", and a mismatch is considered if the first data and the second data do not occur in pairs.
In one embodiment, the first data and the second data may be the same data, for example, when the first data is "1", the second data is "1", or when the first data is "0", the second data is "0", and when the first data and the second data are the same data, the matching is considered, whereas when the first data and the second data are not the same data, the matching is considered.
In any of the above embodiments, the statistical information includes at least one of: the time information of occurrence of communication abnormality, the accumulated times of occurrence of communication abnormality after the communication system is started up, and the accumulated times of occurrence of communication abnormality after the communication system is used up.
In this embodiment, the content included in the statistical information is specifically given, where in the case where the statistical information includes time information about occurrence of a communication abnormality, so that a maintainer can directly locate the location of occurrence of the communication abnormality according to the statistical information, to achieve targeted maintenance.
In this embodiment, the statistics information includes the accumulated number of times of occurrence of communication abnormality after the communication system is self-started so as to be able to know the fault statistics condition of the communication system, and similarly, the maintenance personnel can evaluate the health state of the communication system when the statistics information includes the accumulated number of times of occurrence of communication abnormality after the communication system is self-used.
In any of the above embodiments, the control apparatus includes: a programmable logic controller.
In one embodiment, as shown in fig. 2, the control device 202 performs instruction output to the controlled device 204, and after waiting for a time T0, the controlled device 204 feeds back input to implement one communication test.
The waiting time T0 is a time dynamic time difference between the feedback input and the command output, that is, a time difference between the first time and the second time.
In one embodiment, as shown in fig. 3, the timing control signal is a timing control square wave, where the time T is a third duration in the present application, the time period T1 is a first duration in the present application, the time period T2 is a second duration in the present application, and the time period T3 is a time T-time period T1-time period T2.
In one embodiment, the control device has a control program, a data change period program, and a data timing comparison program disposed thereon for timing control waveforms (also timing control signals).
In one embodiment, as shown in fig. 4, the detection method of the communication system includes:
step 402, a control program of the timing control waveform triggers the timing control waveform;
step 404, a data change cycle program is used to trigger a change of the first data;
Step 406, the first data is sent to the controlled device, and the second data fed back by the controlled device is received, wherein the time difference is waiting time T0;
step 408, the data timing comparison program is used for triggering the waiting time T1 to count;
step 410, waiting time T1;
step 412, the waiting period T1 ends, and the waiting period T1 is greater than the waiting period T0;
Step 414, determining whether the first data and the second data match in the time period T2, and if yes, executing step 416; if the determination result is negative, go to step 416;
Step 416, outputting a test result;
Step 418 waits for the start of a new test period within time period T3.
The control program of the timing control waveform is used as a fixed precise period control timing, and the moment of the rising edge or the falling edge of the square wave signal is used as a starting signal of a cyclic test, so that the simultaneous timing operation of the trigger time T and the trigger time T1 is synchronously performed. Data change period, also time T: the moment the square wave signal changes from the falling edge triggers the data source to change once and the data source remains stable from changing again during time T.
Specifically, the time period T1 is set to be a filtering time, i.e. a filtering time waiting for feedback in place, so as to wait for the completion of the loop-closed device feedback input and command output cycle.
The waiting time T0 is a real dynamic time difference between the time of the feedback input and the instruction output, and is a real time of the device for completing the periodic read-write of one closed loop, so the waiting time T0, i.e. the filtering time, is required to be set in the program, and the waiting time T0 can be set to be a time period t1=1.5×the waiting time T0 according to the practical effect time T1.
In one embodiment, as shown in fig. 5, the preset waveform is a triangular wave in which the data values periodically vary between Min minimum and Max maximum, and are cyclically reciprocated.
In this embodiment, the present invention has the following advantages:
(1) The automatic test is realized through the computer program code, the requirement of long-term stability automatic test is met, unattended operation, periodic diagnosis and error timely notification are realized, and therefore, the core program code is provided for constructing a stable and reliable test platform.
(2) The invention realizes the long-term continuous uninterrupted cycle automatic test through the control time sequence management, and can meet the long-term stability test problem of long-term day, month and even year span.
(3) The invention solves the problems of the management of the data feedback filtering time period, the data source and the feedback comparison time period by the sectional management of the time periods in different time periods by means of sectional management of the time periods.
(4) The invention can record the number of errors and the time of errors, and long-term operation without error can prove the long-term operation reliability of the equipment.
(5) The invention is a general test method, which can be used together in a superposition way, namely, a plurality of different test cycles are used simultaneously, thus solving the parallel automatic test problem under the actual complex system.
(6) The invention is a general class test method, which can be nested together for use, i.e. a method of nesting a plurality of small test cycles inside a large test cycle is used to realize the automatic test problem under a more complex system.
(7) The time T, the time period T1, the time period T2 and the time period T3 are set by human beings through computer programs, and parameters can be modified according to the implementation test requirements.
In one embodiment, the present invention provides a communication system including a control device and a controlled device in communication with the control device, for use in the detection method of the communication system as in the above embodiment.
In the above-described embodiments, the control device communicates with the controlled device via the industrial bus.
In the description of the present invention, the term "plurality" means two or more, unless explicitly defined otherwise, the orientation or positional relationship indicated by the terms "upper", "lower", etc. are based on the orientation or positional relationship shown in the drawings, merely for convenience of description of the present invention and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention; the terms "coupled," "mounted," "secured," and the like are to be construed broadly, and may be fixedly coupled, detachably coupled, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present invention, the terms "one embodiment," "some embodiments," "particular embodiments," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A detection method of a communication system including a control device and a controlled device in communication with the control device, the detection method being applied to the control device side, comprising:
detecting a timing control signal comprising a plurality of repeating and consecutive repeating units;
Taking each repeating unit as a triggering condition of a communication system test, carrying out a communication test on each repeating unit, and transmitting first data to the controlled equipment based on that the waveform drawn by the detected data is consistent with the waveform in the repeating unit;
Determining a detection result according to a matching result of the first data and the second data fed back by the controlled equipment;
starting timing based on the detected data that the drawn waveform corresponds to the waveform in the repeating unit;
and receiving the second data under the condition that the timing duration does not reach the first duration.
2. The method for detecting a communication system according to claim 1, further comprising:
and in a second time period after the timing time period reaches the first time period, matching the first data with the second data to determine the matching result.
3. The method for detecting a communication system according to claim 1, further comprising:
Acquiring historical communication data of the control equipment and the controlled equipment, wherein the historical communication data comprises a first moment when the control equipment sends the first data to the controlled equipment and a second moment when the controlled equipment feeds back the second data to the control equipment;
determining the waiting time length of the control equipment according to the first time and the second time;
and determining the first duration according to the waiting duration.
4. A method of detecting a communication system according to claim 3, wherein the first time period is longer than the waiting time period.
5. The method for detecting a communication system according to claim 2, wherein,
The duration of each repeating unit is a third duration, wherein the third duration is greater than the sum of the first duration and the second duration.
6. The method according to any one of claims 1 to 5, wherein the first data is transformed according to a preset waveform once every fourth time period;
Wherein the fourth time period is equal to the time period of the repeating unit.
7. The method for detecting a communication system according to any one of claims 1 to 5, wherein determining a detection result according to a matching result of the first data and second data fed back by the controlled device specifically includes:
Determining a communication anomaly based on the first data not matching the second data;
And outputting statistical information of communication abnormality.
8. The method of claim 7, wherein the statistical information comprises at least one of:
the method comprises the steps of time information of occurrence of communication abnormality, accumulated times of occurrence of communication abnormality after the communication system is started, and accumulated times of occurrence of communication abnormality after the communication system is used.
9. The detection method of a communication system according to any one of claims 1 to 5, characterized in that the control device includes: a programmable logic controller.
10. A communication system comprising a control device and a controlled device in communication with the control device, characterized by a detection method for implementing the communication system of any of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211048510.7A CN115297026B (en) | 2022-08-29 | 2022-08-29 | Communication system and detection method thereof |
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