CN102684933A - Time fault monitoring method and system - Google Patents
Time fault monitoring method and system Download PDFInfo
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- CN102684933A CN102684933A CN2011100596961A CN201110059696A CN102684933A CN 102684933 A CN102684933 A CN 102684933A CN 2011100596961 A CN2011100596961 A CN 2011100596961A CN 201110059696 A CN201110059696 A CN 201110059696A CN 102684933 A CN102684933 A CN 102684933A
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Abstract
The invention discloses a time fault monitoring method and a time fault monitoring system. The method comprises the following steps that: a monitored node in a ring network measures own line time delay to a time reference point; the monitored node measures own transmission time for transmitting a unicast peer-to-peer (P2P) time delay test message to the time reference point; and a time fault is monitored according to the line time delay, the transmission time and a preset alarming threshold value. Maintenance efficiency can be improved, and application cost can be lowered.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of time failure monitoring method and system.
Background technology
Precision Time Protocol (Precise Time Protocol abbreviates PTP as) has been stipulated the method for Network Synchronization, and it is through measuring the time synchronized that slaver and master are guaranteed in time-delay.But, in actual engineering, also exist other disturbing factor (asymmetry of for example equipment fault, defective, circuit) can cause the asynchronism(-nization) step of slaver and master.
In the correlation technique, when the time of occurrence fault, can only use global positioning system (Global Position System abbreviates GPS as) receiver to monitor faulty equipment one by one.But this method maintenance efficiency is low, application cost is high.
Summary of the invention
In correlation technique; Use the GPS receiver to monitor faulty equipment one by one, thus the problem that maintenance efficiency is low, application cost is high and propose the present invention, for this reason; Main purpose of the present invention is to provide a kind of time failure monitoring method and system, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of time failure monitoring method is provided.
Time failure monitoring method according to the present invention comprises: the monitored node in the loop network is measured self the circuit delay time to the time reference point; Measure the transmitting time that self clean culture P2P delay test message is sent to time reference; According to circuit delay time, transmitting time and predefined alarming threshold value, monitoring time fault.
Further, measuring self comprises the transmitting time that clean culture P2P delay test message sends to time reference: write down the transmission time stamp that self sends clean culture P2P delay test message to time reference; Confirm that time reference receives the reception time stamp of clean culture P2P delay test message; Calculating the time that transmitting time equals to receive the time stamp indication subtracts the time of sending the time stamp indication.
Further, confirm that the reception time stamp that time reference receives clean culture P2P delay test message comprises: receive response message, wherein comprise the reception time stamp in the response message from time reference; From response message, extract and receive time stamp.
Further, after the response message that receives from time reference, said method also comprises: from response message, extract correction time; Calculating time that transmitting time equals to receive the time stamp indication subtracts time of sending the time stamp indication, correction down time again.
Further, through point-to-point mode, measure self circuit delay time to the time reference point.
Further, according to circuit delay time, transmitting time and predefined alarming threshold value, the monitoring time fault comprises: judge that whether transmitting time subtracts the circuit delay time greater than the alarming threshold value; If judged result is for being then definite life period fault.
Further, along the clockwise direction and the counter clockwise direction of loop network, measure self circuit delay time respectively to the time reference point; Along the clockwise direction and the counter clockwise direction of loop network, measure the transmitting time that self clean culture P2P delay test message is sent to time reference respectively; In the clockwise direction and/or counterclockwise, transmitting time subtracts the circuit delay time greater than the alarming threshold value, confirms clockwise direction and/or counterclockwise goes up the life period fault.
Further, measuring self circuit delay times prior to the time reference point, said method also comprises: in a plurality of nodes in loop network, confirm that a node is as time reference; Confirm that a plurality of nodes other node except that time reference is as monitored node; Each the monitored node that is provided with in the monitored node is carried out the operation of measurement self to the circuit delay time of time reference point.
Further, according to the monitoring result of the monitoring time fault of each monitored node, confirm the monitoring time fault of loop network, wherein the monitoring time fault of loop network comprises one of following: run dead fault, Time Calculation fault, asymmetry fault.
To achieve these goals, according to another aspect of the present invention, a kind of time failure monitoring system is provided.
Time failure Application of Monitoring System according to the present invention is in loop network, and comprising monitored node and time reference, wherein monitored node comprises: first measurement module is used to measure self the circuit delay time to the time reference point; Second measurement module is used to measure the transmitting time that self clean culture P2P delay test message is sent to time reference; The time failure monitoring modular is used for according to circuit delay time, transmitting time and predefined alarming threshold value, monitoring time fault.
The present invention realizes the time failure monitoring through automatic monitoring method, thereby improves maintenance efficiency, reduction application cost.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the sketch map according to the loop network of the embodiment of the invention;
Fig. 2 is the flow chart according to the time failure monitoring method of the embodiment of the invention;
Fig. 3 is the structured flowchart according to the time failure monitoring system of the embodiment of the invention.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
Fig. 1 is the sketch map according to the loop network of the embodiment of the invention, and is as shown in Figure 1, and node 1 is a time reference, and other node (2,3,4,5,6) is monitored node.
Based on the loop network of Fig. 1, the invention provides a kind of time failure monitoring method.Fig. 2 is the flow chart according to the time failure monitoring method of the embodiment of the invention, and is as shown in Figure 2, comprises following step:
Step S202, the monitored node in the loop network is measured self the circuit delay time to the time reference point.
Step S204 measures the transmitting time that self clean culture P2P delay test message is sent to time reference.
Step S206 is according to circuit delay time, transmitting time and predefined alarming threshold value, monitoring time fault.
In the correlation technique, use the GPS receiver to monitor faulty equipment one by one, thereby maintenance efficiency is low, application cost is high.In the embodiment of the invention, realize the time failure monitoring, thereby improve maintenance efficiency, reduction application cost through automatic monitoring method.
Need to prove, in this preferred embodiment, can be the symmetry network at this ring network.
Need to prove that in this preferred embodiment, the non-monitoring node in this ring network can carry out transparent transmission to this clean culture P2P delay test message to be handled.
Preferably, measuring self comprises the transmitting time that clean culture P2P delay test message sends to time reference: write down the transmission time stamp that self sends clean culture P2P delay test message to time reference; Confirm that time reference receives the reception time stamp of clean culture P2P delay test message; Calculating the time that transmitting time equals to receive the time stamp indication subtracts the time of sending the time stamp indication.
Preferably, can write down clockwise direction respectively and anticlockwise transmission time stamp is t3_left and t3_right, and record clockwise direction and anticlockwise reception time stamp are t4_left and t4_right.
Preferably, confirm that the reception time stamp that time reference receives clean culture P2P delay test message comprises: receive response message, wherein comprise the reception time stamp in the response message from time reference; From response message, extract and receive time stamp.
Preferably, after the response message that receives from time reference, said method also comprises: from response message, extract correction time; Calculating time that transmitting time equals to receive the time stamp indication subtracts time of sending the time stamp indication, correction down time again.
Preferably, can write down clockwise direction and anticlockwise correction time respectively is corerect_left and correct_right.
Preferably, through point-to-point mode, measure self circuit delay time to the time reference point.
Preferably, according to circuit delay time, transmitting time and predefined alarming threshold value, the monitoring time fault comprises: judge that whether transmitting time subtracts the circuit delay time greater than the alarming threshold value; If judged result is for being then definite life period fault.
Preferably, calculate according to following formula (1) and formula (2):
Diff_left＝t4_left-t3_left-correct_left-line_delay_left……(1)
Diff_right＝t4_right-t3_right-correct_right-line_delay_right……(2)
Preferably, along the clockwise direction and the counter clockwise direction of loop network, measure self circuit delay time respectively to the time reference point; Along the clockwise direction and the counter clockwise direction of loop network, measure the transmitting time that self clean culture P2P delay test message is sent to time reference respectively; In the clockwise direction and/or counterclockwise, transmitting time subtracts the circuit delay time greater than the alarming threshold value, confirms clockwise direction and/or counterclockwise goes up the life period fault.
Preferably, can write down clockwise direction and anticlockwise circuit delay time respectively is line_delay_left and line_delay_right.
Preferably, measuring self circuit delay times prior to the time reference point, said method also comprises: in a plurality of nodes in loop network, confirm that a node is as time reference; Confirm that a plurality of nodes other node except that time reference is as monitored node; Each the monitored node that is provided with in the monitored node is carried out the operation of measurement self to the circuit delay time of time reference point.
Preferably, monitored node is platform 1588 nodes, and for the clean culture P2P delay test message that non-monitored node is target, it can be transmitted according to TC transparent transmission mode.
In addition, need to prove, all need set up identical testing mechanism the node of all except that time reference in the loop network.
Preferably, according to the monitoring result of the monitoring time fault of each monitored node, confirm the monitoring time fault of loop network, wherein the monitoring time fault of loop network comprises one of following: run dead fault, Time Calculation fault, asymmetry fault.
Be example with monitored node 4 below, the implementation procedure of the embodiment of the invention is described in detail.
Monitored node 4 respectively from about two hoop time references 1 initiate Pdelay circuit delay measurement mechanism, obtain circuit delay time line_delay_left and line_delay_right about respectively.
Monitored node 4 respectively from about two hoop time references 1 send the delay_req message of clean culture, and the transmission time stamp of two ring delay_req about record, t3_left and t3_right.
Monitored node 2, monitored node 3, monitored node 5,6 pairs of delay_req messages of monitored node are made TC and are handled.
Time reference 1 respectively from about two articulatings receive the delay_req message, separately reception time stamp t4_left and t4_right of record, and produce corresponding delay_resp message.
Monitored node 4 respectively from about two articulatings receive the delay_resp message, extract t4_left and t4_right and correct_left and correct_right.
Calculate diff_left and diff_right respectively according to following formula (1) and formula (2) calculating, and determined whether alarm according to alarming threshold.
Diff_left＝t4_left-t3_left-correct_left-line_delay_left……(1)
Diff_right＝t4_right-t3_right-correct_right-line_delay_right……(2)
In like manner, set up identical monitoring at monitored node 2, monitored node 3, monitored node 5, monitored node 6.
Run dead fault if equipment appears in monitored node 3, the webmaster of loop network can be known.
If monitored node 3 life periods are calculated unusual, monitored node 3 alarm possibly occur with monitored node 4.
If have the asymmetry fault between monitored node 2, the monitored node 3, alarm possibly appear in then monitored node 2, monitored node 3 and monitored node 4.
Need to prove; Can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions; And; Though logical order has been shown in flow chart, in some cases, can have carried out step shown or that describe with the order that is different from here.
The embodiment of the invention provides a kind of time failure monitoring system, and this time failure monitoring system can be applied in the loop network, and is used to realize above-mentioned time failure monitoring method.Fig. 3 is the structured flowchart according to the time failure monitoring system of the embodiment of the invention; As shown in Figure 3, comprise monitored node 32 and time reference 34, wherein monitored node 32 comprises first measurement module 322; Second measurement module 324, time failure monitoring modular 326.Be described in detail in the face of its structure down.
Need to prove that the time failure monitoring system of describing among the device embodiment is corresponding to above-mentioned method embodiment, its concrete implementation procedure had been carried out detailed description in method embodiment, repeat no more at this.
In sum, according to the abovementioned embodiments of the present invention, a kind of time failure monitoring method and system are provided.The present invention realizes the time failure monitoring through automatic monitoring method, thereby improves maintenance efficiency, reduction application cost.
Obviously, it is apparent to those skilled in the art that above-mentioned each module of the present invention or each step can realize with the general calculation device; They can concentrate on the single calculation element; Perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element; Thereby; Can they be stored in the storage device and carry out, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize by calculation element.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a time failure monitoring method is characterized in that, comprising:
Monitored node in the loop network is measured self the circuit delay time to the time reference point;
Measure the transmitting time that self the point-to-point P2P delay test of clean culture message is sent to said time reference;
According to said circuit delay time, said transmitting time and predefined alarming threshold value, monitoring time fault.
2. method according to claim 1 is characterized in that, measures self the transmitting time that clean culture P2P delay test message sends to said time reference is comprised:
Write down the transmission time stamp that self sends said clean culture P2P delay test message to said time reference;
Confirm that said time reference receives the reception time stamp of said clean culture P2P delay test message;
Calculating time that said transmitting time equals the indication of said reception time stamp subtracts time of said transmission time stamp indication.
3. method according to claim 2 is characterized in that, confirms that the reception time stamp that said time reference receives said clean culture P2P delay test message comprises:
Receive response message, comprise said reception time stamp in the wherein said response message from said time reference;
From said response message, extract said reception time stamp.
4. method according to claim 2 is characterized in that, after the response message that receives from said time reference, said method also comprises:
From said response message, extract correction time;
Calculating time that said transmitting time equals the indication of said reception time stamp subtracts the time of said transmission time stamp indication, subtracts said correction time again.
5. method according to claim 1 is characterized in that, through point-to-point mode, measures self the circuit delay time to said time reference.
6. method according to claim 1 is characterized in that, according to said circuit delay time, said transmitting time and predefined alarming threshold value, the monitoring time fault comprises:
Judge that whether said transmitting time subtracts the said circuit delay time greater than said alarming threshold value;
If judged result is for being then definite life period fault.
7. according to each described method in the claim 1 to 6, it is characterized in that,
Along the clockwise direction and the counter clockwise direction of said loop network, measure self circuit delay time respectively to said time reference;
Along the clockwise direction and the counter clockwise direction of said loop network, measure the transmitting time that self clean culture P2P delay test message is sent to said time reference respectively;
On said clockwise direction and/or said counter clockwise direction, said transmitting time subtracts the said circuit delay time greater than said alarming threshold value, confirms life period fault on said clockwise direction and/or the said counter clockwise direction.
8. according to each described method in the claim 1 to 6, it is characterized in that measuring self circuit delay times prior to the time reference point, said method also comprises:
In a plurality of nodes in said loop network, confirm that a node is as time reference;
Confirm that said a plurality of node other node except that said time reference is as monitored node;
Each the monitored node that is provided with in the said monitored node is carried out the operation of measurement self to the circuit delay time of time reference point.
9. method according to claim 8; It is characterized in that; Monitoring result according to the monitoring time fault of said each monitored node; Confirm the monitoring time fault of said loop network, it is one of following that the monitoring time fault of wherein said loop network comprises: run dead fault, Time Calculation fault, asymmetry fault.
10. a time failure monitoring system is applied to it is characterized in that in the loop network, comprises monitored node and time reference, and wherein said monitored node comprises:
First measurement module is used to measure self the circuit delay time to the time reference point;
Second measurement module is used to measure the transmitting time that self the point-to-point P2P delay test of clean culture message is sent to said time reference;
The time failure monitoring modular is used for according to said circuit delay time, said transmitting time and predefined alarming threshold value, monitoring time fault.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110059696.1A CN102684933B (en) | 2011-03-11 | 2011-03-11 | Time failure monitoring method and system |
| PCT/CN2011/076729 WO2012122759A1 (en) | 2011-03-11 | 2011-06-30 | Method and system for monitoring time faults |
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| CN201110059696.1A CN102684933B (en) | 2011-03-11 | 2011-03-11 | Time failure monitoring method and system |
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