CN109005089A - A kind of network node response Time delay measurement method of non-intervention type - Google Patents
A kind of network node response Time delay measurement method of non-intervention type Download PDFInfo
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- CN109005089A CN109005089A CN201811299064.0A CN201811299064A CN109005089A CN 109005089 A CN109005089 A CN 109005089A CN 201811299064 A CN201811299064 A CN 201811299064A CN 109005089 A CN109005089 A CN 109005089A
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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
- H04L43/0852—Delays
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Abstract
The present invention relates to measurement method and device fields, disclose a kind of network node response Time delay measurement method of non-intervention type, the test device uses external, and test packet is uploaded to examining system according to the setting period by test device, and sends finish time start-up study timer in message；After examining system receives the message that test device is uploaded, operation needed for executing simultaneously issues timing stopping message；After test device receives the stopping timing message that examining system issues, stop delay timer, and the response delay of examining system is calculated.In the control system based on industrial network, the response delay of network node sending and receiving data has significant impact to the performance of control system, the delay is difficult to accurately measure, traditional implantation software mode meeting occupying system resources, it is difficult to accurately reflect system actual performance and measurement accuracy is low.The invention avoids the uncertain factors introduced in installation test software measurement, realize the composite measurement to system response delay.
Description
Technical field
The survey of measurement method and device field of the present invention more particularly to network-termination device to the network message response time
Amount.
Background technique
In the control system based on industrial network, network node sending and receiving data responds delay to the performance of control system
With significant impact, which contains interrupt response time, and the data transmit-receive time, protocol stack handles time etc., with node
Hardware composition it is closely related with software configuration, it is difficult to accurately measure.The measurement of response delay at present is mostly by node
The mode of implantation software carries out, however is implanted into software running process meeting occupying system resources, it is difficult to it is true to accurately reflect system performance
Truth condition, and measurement accuracy is low, it is difficult to meet demand.
Summary of the invention
In view of the above deficiencies, the invention proposes a kind of network nodes of non-intervention type to respond Time delay measurement method, realizes
Accurate measurement to system data receive-after-transmit time delay.
The present invention is achieved by the following technical solutions: a kind of measurement side of the network node response delay of non-intervention type
Method, the test device use external, and test packet is uploaded to examining system according to the setting period by test device, and is being reported
Text sends finish time start-up study timer；After examining system receives the message that test device is uploaded, fortune needed for executing
It calculates and issues timing and stop message；After test device receives the stopping timing message that examining system issues, stop delay timing
Device, and the response delay of examining system is calculated.The above process is repeated according to the setting period, to obtain examining system
Comprehensive delay statistical result, including maximum delay value, minimum delay value, average delay value, delay value variance etc..
As a preferred embodiment, the test device can seal delay value and statistical result according to scheduled communication protocol
It puts into test packet and is uploaded to examining system, counted, analyzed and achieved by examining system.Control based on network system at present
Main controlled node majority in system is implemented using industrial computer, therefore is more convenient for after delay data is uploaded to industrial computer
Statistical analysis and visual presentation.
As a preferred embodiment, the cycle time that the test device uploads test packet can be according to the property of examining system
It can be carried out setting, to guarantee to improve testing efficiency under the premise of meeting test request.It, can be with for high-performance computer
The efficiency of the raising test in period is uploaded by shortening.System lower for performance then needs that longer communication cycle is arranged, with
Anti- locking system can not respond test packet.
As a preferred embodiment, the test device can be based on FPGA (Field Programmable Gate
Array) or embedded microprocessor is realized.To obtain higher temporal resolution and accuracy of timekeeping.
It is carried out the beneficial effects of the present invention are: Time delay measurement mode of the present invention is avoided by installation test software
The uncertain factor introduced is measured, realizes and treats system break response, network data transmitting-receiving, protocol stack processing, computing load
Etc. the composite measurement of multiple links delay, statistical result can be flexibly presented, and can be according to examining system real response
Performance carries out the setting of communication cycle, meets the real-time performance requirement of different levels.Data are being carried out using FPGA hardware logic
When the transmitting-receiving of packet and Time delay measurement, the temporal resolution of nanosecond can be obtained.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of the network node response Time delay measurement method of non-intervention type of the present invention；
Fig. 2 is a kind of network node response Time delay measurement method testing process timing diagram of non-intervention type of the present invention.
It is marked in each attached drawing as follows: 1, examining system；2, test device；3, test packet upload procedure；4, timing stops
Only message issues process.
Specific embodiment
Below by embodiment and its attached drawing, the present invention is described in further detail.
Please refer to Fig. 1 and Fig. 2, a kind of measurement method of the network node response delay of non-intervention type, the test device 2
Using external, test packet is uploaded to examining system 1 according to the setting period by test device 2, and at the end of message is sent
Carve start-up study timer；After examining system 1 receives the message that test device 2 is uploaded, operation needed for executing simultaneously issues meter
When stop message；After test device 2 receives the stopping timing message that examining system 1 issues, stop delay timer, and calculate
Obtain the response delay of examining system 1.The above process is repeated according to the setting period, to obtain the synthesis of examining system 1
Be delayed statistical result, including maximum delay value, minimum delay value, average delay value, delay value variance etc..
As a preferred embodiment, the test device 2 can by delay value and statistical result according to scheduled communication protocol
It is encapsulated into test packet and is uploaded to examining system 1, counted, analyzed and is achieved by examining system 1.Networking control at present
Main controlled node majority in system processed is implemented using industrial computer, therefore delay data is uploaded to after industrial computer more
Convenient for statisticalling analyze and visualizing.
As a preferred embodiment, the cycle time that the test device 2 uploads test packet can be according to examining system 1
Performance is configured, to guarantee to improve testing efficiency under the premise of meeting test request.It, can for high-performance computer
To upload the efficiency of the raising test in period by shortening.System lower for performance then needs that longer communication cycle is arranged,
Test packet can not be responded to prevent locking system.
As a preferred embodiment, the test device 2 can be based on FPGA (Field Programmable Gate
Array) or embedded microprocessor is realized.To obtain higher temporal resolution and accuracy of timekeeping.
Below by the specific steps of practical operation 1. to 6. further explanation:
1. test starts, examining system 1 sends Initial message to test device, will be set as test periodT。
2. after test device 2 receives Initial message, starting periodic communication and the period according to settingTMessage is uploaded,
Test packet upload procedure 3 in as Fig. 2.
3. test device 2 is sent completely in the message of upload starts high-resolution timer constantly.
4. examining system 1 receives and parses through message, complete to issue destination address after data operation as test device physics
The timing of address stops message, and as Fig. 2 timing stopping message issuing process 4.
5. 2 online analyzing of test device to the message from examining system 1, determines the message to stop after response message
Timing obtains the delay value in Fig. 1Δk, then data transmission and parsing time are subtracted according to Ethernet transmission rateT f , and most
1 response time of examining system is obtained in Fig. 1 eventuallyΔT k =Δk -2T f 。
6. 4. 5. repeating step can be realized to 1 maximum delay value of examining system, minimum delay value, when average delay value
Between statistics, to obtain assessment to its real-time response performance.
What has been described above is only a preferred embodiment of the present invention.It should be pointed out that for those of ordinary skill in the art
For, without departing from the principle of the present invention, it can also be altered or modified in specific embodiment and with above making, this
It also should be regarded as belonging to the scope of protection of the present invention a bit.
Claims (4)
1. a kind of network node of non-intervention type responds Time delay measurement method, it is characterised in that: the test device is using external
Formula, test packet is uploaded to examining system according to the setting period by test device, and sends finish time start-up study in message
Timer；After examining system receives the message that test device is uploaded, operation needed for executing simultaneously issues timing stopping message；It surveys
Trial assembly is set receive the stopping timing message that examining system issues after, stop delay timer, and examining system be calculated
Response delay.
2. a kind of network node of non-intervention type according to claim 1 responds Time delay measurement method, it is characterised in that: institute
Stating test device can be encapsulated into delay value and statistical result in test packet and be uploaded to be measured according to scheduled communication protocol
System is counted by examining system, analyzed and is achieved.
3. a kind of network node of non-intervention type according to claim 1 responds Time delay measurement method, it is characterised in that: institute
The cycle time for stating test device upload test packet can be configured according to the performance of examining system, to guarantee meeting test
Testing efficiency is improved under the premise of it is required that.
4. a kind of network node of non-intervention type according to claim 1 responds Time delay measurement method, it is characterised in that: institute
Stating test device can be realized based on FPGA (Field Programmable Gate Array) or embedded microprocessor.
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| CN201811299064.0A CN109005089A (en) | 2018-11-02 | 2018-11-02 | A kind of network node response Time delay measurement method of non-intervention type |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110426180A (en) * | 2019-08-05 | 2019-11-08 | 浙江大学 | A kind of three-dimensional scenic drafting delay measurement system and method based on high-speed line scanning |
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| CN101197737A (en) * | 2008-01-09 | 2008-06-11 | 中兴通讯股份有限公司 | Measuring apparatus and measuring method for IPTV access network |
| CN102316357A (en) * | 2011-09-09 | 2012-01-11 | 华南理工大学 | Non-intrusive single-ended acquired video end-to-end time delay measuring method and device |
| CN106027334A (en) * | 2016-07-04 | 2016-10-12 | 贵州电网有限责任公司电力科学研究院 | Handheld switch message transmission delay test device and test method |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101022374A (en) * | 2007-03-06 | 2007-08-22 | 中兴通讯股份有限公司 | Method and system for on-line testing data network quality |
| CN101197737A (en) * | 2008-01-09 | 2008-06-11 | 中兴通讯股份有限公司 | Measuring apparatus and measuring method for IPTV access network |
| CN102316357A (en) * | 2011-09-09 | 2012-01-11 | 华南理工大学 | Non-intrusive single-ended acquired video end-to-end time delay measuring method and device |
| CN106027334A (en) * | 2016-07-04 | 2016-10-12 | 贵州电网有限责任公司电力科学研究院 | Handheld switch message transmission delay test device and test method |
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| CN110426180A (en) * | 2019-08-05 | 2019-11-08 | 浙江大学 | A kind of three-dimensional scenic drafting delay measurement system and method based on high-speed line scanning |
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Application publication date: 20181214 |