CN101643075B - Control method for monitoring information congestion by facing to rail traffic station - Google Patents
Control method for monitoring information congestion by facing to rail traffic station Download PDFInfo
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- CN101643075B CN101643075B CN2009100542343A CN200910054234A CN101643075B CN 101643075 B CN101643075 B CN 101643075B CN 2009100542343 A CN2009100542343 A CN 2009100542343A CN 200910054234 A CN200910054234 A CN 200910054234A CN 101643075 B CN101643075 B CN 101643075B
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Abstract
The invention relates to a control method for monitoring information congestion by facing to a rail traffic station, comprising the following steps: field equipment data is abstracted to be monitor analogue quantity, monitor switch quantity, control analogue quantity and control switch quantity, which are endowed with different priority levels, and a high priority is distributed to an application with higher Qos requirement, vice versa, a low priority is distributed to application with lower Qos requirement; an independent control information queue and a monitor information queue are adopted, and are respectively a switch quantity information queue and an analogue quantity information queue; a length-time segment dispatching algorithm based on a strategy is operated; and different business information is distributed to queues with different priority levels, proper key parameters of the length-time segment dispatching algorithm based on the strategy are selected, and QoS control based on the strategy is realized. The invention has the advantages that under the condition of a limited bandwidth, the control method ensures both priority treatment of key data and the fairness of data treatment, and efficiently avoids data congestion.
Description
Technical field
The present invention relates to field of track traffic, relate in particular to a kind of towards the congested control method of rail transit station equipment monitor message.
Background technology
Fast development along with urban track traffic, the monitored object of station equipment monitored control system is more and more, generally comprises: ventilation and air conditioning system, supply and drain water system, power and lighting system, escalator, vertical lift system, gate control system, screen door, closed guard gate, anti-flood etc.
Accordingly, the station equipment monitored control system is also increasing to the quantity of information of the collection of field apparatus and control, various data be aggregated in the monitored control system process and the monitored control system transmitting control commands in the process of bottom equipment, all might be because data congestion causes crucial device control instruction can't in time transmit with alarm message.
How under limited bandwidth condition, guarantee in time assigning of crucial control command,, become a problem demanding prompt solution with in time reporting of equipment alarm information.
Summary of the invention
Purpose of the present invention is exactly in order to overcome the defective that above-mentioned prior art exists, to provide a kind of high-efficiency reliable towards the congested control method of rail transit station equipment monitor message.
Purpose of the present invention can be achieved through the following technical solutions: a kind ofly it is characterized in that towards the congested control method of rail transit station equipment monitor message this method comprises:
(1) with field equipment data abstract be monitor analogue quantity, monitoring switching value and control analog quantity, master cock amount, and give different priority levels, the application higher to qos requirement distributes high priority, otherwise then distributes low priority;
(2) adopt independently control information formation and monitoring information formation, control information formation simultaneously and monitoring information formation are divided into switching value message queue and analog quantity information formation again separately;
(3) operation is based on length-time period dispatching algorithm (the Policy-based Length﹠amp of strategy; DurationQueuing abbreviates the PLDQ algorithm as);
(4) the different business information distribution is arrived other formation of different priorities, and select the key parameter of suitable length-time period dispatching algorithm, realize QoS control based on strategy based on strategy.
Described control information formation is in order to storage equipment control command relevant information, and described monitoring information formation is in order to storage equipment state, warning relevant information.
Described length based on strategy-time period dispatching algorithm comprises:
A. establishing i is the formation sequence number, i=1, and 2,3,4......, wherein numeral is more little, represents queue priority high more;
B.Lm is the specified queue length of formation i, and its length of different queue can be different;
C.Lr is that formation i does not dispatch preceding actual length;
D.Lmin is the minimum value of the Lm of formation i and formation (i+1);
E.r is the thresholding ratio that queue priority is adjusted;
F.q is for heightening the message length ratio of time priority query, q=(1-r);
G.t is waiting time, and after the elapsed time t, inferior priority query begins the message priority of this formation is heightened during promptly from high-priority queue transmission beginning;
H. choose current highest-priority queue, promptly the highest the and Lr of priority begins message transmission, the transmission t time greater than 0 formation;
I. all formation execution priorities are adjusted:
If formation i is not that the Lr/Lm of sky and formation i is less than r, the Lr/Lm of formation simultaneously (i+1) is not less than r, then formation (i+1) is the message group of Lmin*q with the q parameter from formation head intercepted length, and the priority of heightening this message group is i, the message after heightening is put into the tail of the queue of formation i and is waited for; And return step G.
Compared with prior art, advantage of the present invention is by introduce the PLDQ algorithm in the processing of rail transit station equipment monitor message, according to different control policies to the processing of classifying of the Information Monitoring of field apparatus and control command, under limited bandwidth condition, both guaranteed the priority processing of critical data, guarantee the fairness of data handing again, effectively avoided data congestion, assisted making station control in time to obtain field device failure state and relevant device control command.
The specific embodiment
The present invention will be further described below in conjunction with specific embodiment.
The jamming control method of the station equipment monitor message that the present invention relates to, its groundwork principle is to classify at different on-the-spot I/O information, equipment state and device control order that priority processing is reported to the police and is correlated with.
Specifically, the station equipment monitored control system can be divided into rigid line I/O interface, low rate asynchronous serial communication interface and network interface with the interface type of the system or equipment of being monitored.
(1) rigid line I/O interface: adopt on-off signal to come the state of indication equipment or the interface shape of control command, two kinds of switching value output and switching value inputs are arranged usually;
(2) low rate asynchronous serial communication interface: adopt RS485, RS422 or the interface standard realization of RS232 and the information transfer of equipment and system;
(3) network interface: the information transfer that adopts ethernet technology realization and equipment and system.
According to different data flows, the exchange message of these three kinds of interface types can be divided into monitoring information and control information again.
Wherein, monitoring information sends to the station equipment monitored control system by field apparatus, and control information sends to field apparatus by the station equipment monitored control system.
According to different data types, monitoring information and control information can be divided into analog quantity and switching value again.See accompanying drawing 1.
This method with field equipment data abstract be monitor analogue quantity, monitoring switching value and control analog quantity, master cock amount, and give different priority levels.The application higher to those qos requirements distributes high priority, otherwise then distributes low priority.
This method adopts independently control information formation (storage equipment control command relevant information) and monitoring information formation (storage equipment state, warning relevant information), and control information formation simultaneously and monitoring information formation are divided into switching value message queue and analog quantity information formation again separately.As accompanying drawing 1:
This method has been analyzed the merits and faults of PQ algorithm and QLT algorithm, from reliability of data transmission and fairness, has proposed length-time period dispatching algorithm (the Policy-based Length﹠amp based on strategy; DurationQueuing abbreviates the PLDQ algorithm as), be described below:
If i is formation sequence number (i=1,2,3,4......, wherein numeral is more little, represents the queue priority high more).
Lm is the specified queue length of formation i, and its length of different queue may be different;
Lr is that formation i does not dispatch preceding actual length;
Lmin is the minimum value of the Lm of formation i and formation (i+1);
R is the thresholding ratio that queue priority is adjusted;
Q is for heightening the message length ratio of time priority query, q=(1-r);
T is waiting time, and after the elapsed time t, inferior priority query begins the message priority of this formation is heightened during promptly from high-priority queue transmission beginning
Algorithm principle:
Step 1, choose current highest-priority queue (be the highest and Lr of priority greater than 0 formation) beginning message transmission, transmission t time.
Step 2, all formation execution priorities are adjusted:
If formation i is not that the Lr/Lm of sky and formation i is less than r, the Lr/Lm of formation simultaneously (i+1) is not less than r, then formation (i+1) is the message group of Lmin*q with the q parameter from formation head intercepted length, and the priority of heightening this message group is i, the message after heightening is put into the tail of the queue of formation i and is waited for; Enter step 1.
This method is passed through the different business information distribution is arrived other formation of different priorities, and selects the key parameter of suitable PLDQ algorithm, realizes the QoS control based on strategy.
For example, at the preferential QoS control policy of monitoring, the priority of monitoring information formation is higher than the control information formation.At the preferential QoS control policy of control, the priority of control information formation is higher than the monitoring information formation.
By parameters such as different Lm, r, t are set, also can realize different QoS control policies simultaneously.For example the setting of t coefficient is short more, and the setting of r coefficient is high more, and the high priority message response time is also short more.
Claims (3)
1. one kind towards the congested control method of rail transit station equipment monitor message, it is characterized in that this method comprises:
(1) with field equipment data abstract be monitor analogue quantity, monitoring switching value and control analog quantity, master cock amount, and give different priority levels, the application higher to qos requirement distributes high priority, otherwise then distributes low priority;
(2) adopt independently control information formation and monitoring information formation, control information formation simultaneously and monitoring information formation are divided into switching value message queue and analog quantity information formation again separately;
(3) operation is based on the length-time period dispatching algorithm of strategy;
(4) the different business information distribution is arrived other formation of different priorities, and select the key parameter of suitable length-time period dispatching algorithm, realize QoS control based on strategy based on strategy.
2. according to claim 1 a kind of towards the congested control method of rail transit station equipment monitor message, it is characterized in that, described control information formation is in order to storage equipment control command relevant information, and described monitoring information formation is in order to storage equipment state, warning relevant information.
3. according to claim 1ly a kind ofly it is characterized in that towards the congested control method of rail transit station equipment monitor message described length based on strategy-time period dispatching algorithm comprises:
A. establishing i is the formation sequence number, i=1, and 2,3,4......, wherein numeral is more little, represents queue priority high more;
B.Lm is the specified queue length of formation i, and its length of different queue can be different;
C.Lr is that formation i does not dispatch preceding actual length;
D.Lmin is the minimum value of the Lm of formation i and formation (i+1);
E.r is the thresholding ratio that queue priority is adjusted;
F.q is for heightening the message length ratio of time priority query, q=(1-r);
G.t is waiting time, and after the elapsed time t, inferior priority query begins the message priority of this formation is heightened during promptly from high-priority queue transmission beginning;
H. choose current highest-priority queue, promptly the highest the and Lr of priority begins message transmission, the transmission t time greater than 0 formation;
I. all formation execution priorities are adjusted:
If formation i is not that the Lr/Lm of sky and formation i is less than r, the Lr/Lm of formation simultaneously (i+1) is not less than r, then formation (i+1) is the message group of Lmin*q with the q parameter from formation head intercepted length, and the priority of heightening this message group is i, the message group after heightening is put into the tail of the queue of formation i and is waited for; And return step G.
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| CN2009100542343A CN101643075B (en) | 2009-06-30 | 2009-06-30 | Control method for monitoring information congestion by facing to rail traffic station |
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| CN2009100542343A CN101643075B (en) | 2009-06-30 | 2009-06-30 | Control method for monitoring information congestion by facing to rail traffic station |
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| CN101643075B true CN101643075B (en) | 2011-08-31 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101905704B (en) * | 2010-08-04 | 2012-03-14 | 北京全路通信信号研究设计院有限公司 | Method, equipment and system for monitoring railway equipment |
| CN102285364B (en) * | 2011-05-05 | 2013-10-23 | 西安理工大学 | Distributed train concurrent dispatching method based on train priorities |
| CN103412992B (en) * | 2013-08-05 | 2016-04-06 | 卡斯柯信号有限公司 | A kind of random screening dispatching method for emulation testing |
| CN104917585B (en) * | 2014-03-10 | 2019-02-26 | 华为技术有限公司 | Message interaction method and device |
| CN110171446B (en) * | 2019-05-29 | 2021-08-10 | 北京隆普智能科技有限公司 | Subway pipeline system and anti-collision optimization method thereof |
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| CN1274222A (en) * | 1999-05-12 | 2000-11-22 | 日本电气株式会社 | Method for control jam in asynchronous transmitting mode exchanging system |
| CN1301001A (en) * | 1999-12-23 | 2001-06-27 | 李善伯 | Method for realizing vehicles running on highway in queue mode |
| CN1929452A (en) * | 2006-09-20 | 2007-03-14 | 华为技术有限公司 | Method and device for flux plastic |
| EP1887742A1 (en) * | 2006-08-09 | 2008-02-13 | Alcatel Lucent | System and process for QOS-based packet scheduling |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1274222A (en) * | 1999-05-12 | 2000-11-22 | 日本电气株式会社 | Method for control jam in asynchronous transmitting mode exchanging system |
| CN1301001A (en) * | 1999-12-23 | 2001-06-27 | 李善伯 | Method for realizing vehicles running on highway in queue mode |
| EP1887742A1 (en) * | 2006-08-09 | 2008-02-13 | Alcatel Lucent | System and process for QOS-based packet scheduling |
| CN1929452A (en) * | 2006-09-20 | 2007-03-14 | 华为技术有限公司 | Method and device for flux plastic |
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