EP3729860A1 - Dispositif de supervision de défauts d'organe(s) esclave(s) pour un organe maître d'un réseau multiplexé - Google Patents
Dispositif de supervision de défauts d'organe(s) esclave(s) pour un organe maître d'un réseau multiplexéInfo
- Publication number
- EP3729860A1 EP3729860A1 EP18833467.6A EP18833467A EP3729860A1 EP 3729860 A1 EP3729860 A1 EP 3729860A1 EP 18833467 A EP18833467 A EP 18833467A EP 3729860 A1 EP3729860 A1 EP 3729860A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- oej
- slave
- master
- counter
- slave member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W24/00—Supervisory, monitoring or testing arrangements
- H04W24/08—Testing, supervising or monitoring using real traffic
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L12/403—Bus networks with centralised control, e.g. polling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40234—Local Interconnect Network LIN
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40208—Bus networks characterized by the use of a particular bus standard
- H04L2012/40241—Flexray
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
- H04L2012/40267—Bus for use in transportation systems
- H04L2012/40273—Bus for use in transportation systems the transportation system being a vehicle
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/005—Moving wireless networks
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W84/20—Leader-follower arrangements
Definitions
- the invention relates to multiplexed communication networks adapted to the transmission of data frames between a master member and at least one slave member in time slots defined in at least one programming table, and more specifically the supervision of the operation of the slave members. such networks.
- LIN Local Interconnect Network
- FLEXRAY a master member and at least one slave member are arranged so as to exchange data frames in one another. time slots that are defined in at least one scheduling table (or "schedule table"). As a result, these networks are sometimes called deterministic.
- the master unit transmits frames of data called "write frames", composed of a header (or “ header ”) and a message, while each slave organ transmits frames of read data (or” read frames "), composed of a header sent by the master member in a write frame and a message (answer).
- write frames composed of a header (or " header ")
- read frames composed of a header sent by the master member in a write frame and a message (answer).
- the standards of the multiplexed networks defined above do not define a mechanism for signaling a fault on a slave member resulting in the absence of reception by the master member of reading frames that it should have addressed to it in response to his writing frames. In other words, there is no mechanism to diagnose the transmission link of these multiplexed networks, which makes it difficult, if not impossible, to locate in an after-sales service the potential failures related to slave organs.
- the invention is therefore particularly intended to improve the situation.
- a supervisory device intended to equip a master member of a multiplexed communication network adapted to the transmission of data frames between the master member and at least one slave member in time slots defined in at least one a programming table.
- This counter mechanism c (j) advantageously makes it possible to supervise all the slave organs, and more precisely to determine who has a fault.
- the supervision device according to the invention may comprise other characteristics that can be taken separately or in combination, and in particular:
- its analysis means may consider that there is a confirmed fault of a slave member when the counter c (j) associated with the latter reaches the maximum value in the first predefined time interval, after starting from a value minimal;
- its analysis means can decrement by one unit the current value of the counter c (j) associated with a slave member each time the master member receives a read frame from this slave member while the parameter p (j ) associated with it is in its first state, and may consider that a no fault of a slave member is confirmed when the counter c (j) associated with the latter reaches a minimum value in a second predefined time interval;
- its analysis means can consider that a failure of a slave member is confirmed when the counter c (j) associated with the latter reaches the minimum value in the second predefined time interval, after starting from the maximum value ;
- the second predefined time interval may be equal to the first predefined time interval
- its analysis means may not act on the current value of the counter c (j) associated with a slave member when the parameter p (j) associated with the latter is in a second state representative of the non-declaration of physical presence of this slave organ on the network;
- storage means may comprise storage means storing a value representative of a confirmed default of a slave member each time the analysis means consider that there exists such a confirmed defect.
- the invention also proposes a master member, on the one hand, intended to form part of a multiplexed communication network adapted to the transmission of data frames between the master member and at least one slave member in time slots defined in at least one programming table, and, on the other hand, comprising a supervision device of the type of that presented above.
- the invention also proposes a vehicle, possibly of automobile type and comprising, on the one hand, a multiplexed communication network, comprising at least one slave element and adapted to the transmission of data frames in time slots defined in at least one programming table, and, secondly, a master member of the type shown above and connected to the communication network.
- the invention is particularly well suited, although not exclusively, in the case where the communication network is of LIN or FLEXRAY type.
- Figure 1 schematically and functionally illustrates a vehicle comprising a communication network to which are connected a master member, equipped with a supervision device according to the invention , and three slave organs.
- the object of the invention is in particular to propose a supervision device DS intended to equip a master device OM capable of being connected to a multiplexed RC communication network adapted to the transmission of data frames between this master device OM and at least one device slave OEj in time slots defined in at least one so-called transverse programming table.
- the master member OM and the slave members OEj are intended to be connected to a LIN multiplexed RC communication network ("Local Interconnect Network").
- the invention is not limited to this type of multiplexed communication network.
- the invention relates to any multiplexed communication network adapted to the transmission of data frames between a master member and at least one slave member in time slots defined in at least one programming table.
- the multiplexed RC communication network could be of the FLEXRAY type, for example.
- the RC communication network is intended to be installed in a motor vehicle V, such as a car.
- V motor vehicle
- the invention is not limited to this application. It concerns any system, installation or apparatus that may comprise at least one multiplexed communication network adapted to the transmission of data frames between a master member and at least one slave member in time slots defined in at least one transverse programming table. . It therefore particularly concerns vehicles, whether terrestrial, maritime (or fluvial), or aerial, satellites, facilities, possibly of industrial type, and buildings.
- FIG. 1 shows schematically a vehicle V comprising a nonlimiting example of a multiplexed RC communication network.
- the master organ OM and the slave organs OEj can be of any type, as long as they are involved in the acquisition or use of data.
- they can be chosen from a multimedia computer or a sensor or an actuator or a screen (possibly tactile).
- the master device OM and the slave devices OEj transmit frames of data in time slots (or slots) that are predefined in at least one transverse programming table, known only by the master device OM.
- the master unit OM comprises in particular an interface line IL which is adapted to be connected to the bus of the network RC, and a microcontroller MC which is connected to the line interface IL.
- the master unit OM transmits frames of data called write (or write frames), composed of a header (or header) and a message, while each slave member OEj transmits so-called read frames, composed of a header sent by the master unit OM in a write frame and a frame message (answer).
- write or write frames
- read frames composed of a header sent by the master unit OM in a write frame and a frame message (answer).
- the invention proposes to equip the master device OM with a supervision device DS intended to supervise the operation of each slave device OEj with which it must exchange data frames.
- a supervision device DS comprises at least MA analysis means. As illustrated without limitation, it is for example part of the microcontroller MC. But, it could also be connected to this MC microcontroller.
- the analysis means MA are arranged to place in a first state a parameter p (j) which is associated with a slave member OEj whenever the latter (OEj) is declared physically present on the network RC.
- a slave member OEj is declared physically present on the network RC when the OM master member transmits (in a write frame) a header requiring a read frame.
- each slave organ OEj has a parameter p (j) associated with it.
- the first state of a parameter p (j) is a value equal to one (1). But it could also be a value equal to zero (0), for example.
- the analysis means MA are arranged to increment by one unit ("+1") a current value of a counter c (j) which is associated with a slave member OEj whenever the OM master member does not receive a read frame (required) of this slave member OEj while the parameter p (j) associated with the latter (OEj) is in its first state.
- each slave member OEj has a counter c (j) which is associated with it in addition to its parameter p (j).
- the analysis means MA are arranged so as to consider that there exists a confirmed fault of a slave member OEj when the counter c (j) associated with the latter (OEj) reaches a maximum value Cmax in a first interval of time it1 predefined.
- a first interval of time it1 predefined For example, what triggers the start of this first time interval it1 is the fact that the master member OM does not receive a read frame of the slave member OEj in response to its writing frame in the slot predefined time.
- the duration of the first time interval it1 is not necessarily a fixed value. It is even better to take into account all the situations that it is included in a range of values [tm1, tm2j.
- the analysis means MA will observe whether a counter c (j) reaches its maximum value Cmax between the times tm1 and tm2 referenced to the beginning of the first time interval it1 in progress. For example, we can choose tm1 equal to 1, 6 seconds and tm2 equal to 2.4 seconds.
- this maximum value Cmax can be between 200 and 255.
- the analysis means MA consider that there is a confirmed fault of a slave member OEj when the counter c (j) associated with the latter OEj reaches the maximum value Cmax in the first predefined time interval it1, after to have started from a minimum value Cmin. This more restrictive option ensures that the defect is permanent and not temporary.
- this minimum value Cmin may be zero (0). But this is not obligatory.
- the analysis means MA can also be arranged to decrement by a unit ("-1") the current value of the counter c (j) which is associated with a slave member OEj whenever the OM master member receives a reading frame of this slave member OEj while the parameter p (j) associated with the latter (OEj) is in its first state.
- the analysis means MA consider that a failure of a slave member OEj is confirmed when the counter c (j) which is associated with the latter (OEj) reaches the minimum value Cmin in a second interval of time it2 predefined.
- each slave member OEj which has no defect, at least temporarily. It will be understood that if it is possible to decrement a counter c (j) it is because it had previously been incremented and therefore the slave organ OEj had presented a defect at least temporarily, but not necessarily confirmed.
- the duration of the second time interval it2 is not necessarily a fixed value. It is even better to take into account all situations that it is in a range of values [tm3, tm4j. In other words, the analysis means MA will observe if a counter c (j) reaches its minimum value Cmin between the times tm3 and tm4 referenced with respect to the beginning of the second time interval it2 in progress.
- the second predefined time interval it2 may, for example, be equal to the first predefined time interval it1. But this is not obligatory.
- the analysis means MA consider that a failure of a slave member OEj is confirmed when the counter c (j) associated with the latter OEj reaches the minimum value Cmin in the second predefined time interval it2, after leaving the maximum value Cmax.
- This more restrictive option makes it possible to guarantee that a slave organ OEj which had a confirmed defect no longer has any defect.
- the analysis means MA may also be arranged so as not to act on the current value of the counter c (j) which is associated with a slave member OEj when the parameter p (j) associated with the latter (OEj) is in a second state which is representative of the non-declaration of physical presence of this slave organ OEj on the network RC. Indeed, in this situation the problem is on the side of the master organ OM (which has not transmitted its read frame), and therefore it would be useless to wait for a read frame from a slave organ OEj during its time slot (or slot) predefined in the programming table, even though this slave member OEj has not received a read frame of the master member OM.
- the second state of a parameter p (j) is a value equal to zero (0). But it could also be a value equal to one (1), for example. It is in any case different from the value of the first state.
- the supervision device DS may also comprise, as illustrated without limitation in FIG. 1, storage means MS responsible for storing a value which is representative of a confirmed fault of a slave member OEj whenever the MA analytical means consider that there is such a confirmed defect.
- storage means MS responsible for storing a value which is representative of a confirmed fault of a slave member OEj whenever the MA analytical means consider that there is such a confirmed defect.
- These storage means MS may, for example, be in the form of a memory, possibly of software type.
- the storage means MS could also be adapted to store a value that is representative of a confirmed end of fault each time the means of analysis MA consider (or determine) that a lack of a fault of a slave organ OEj is confirmed.
- reading the contents of the storage means MS by means of the analysis (or diagnostic) equipment can make it possible to draw attention to a slave member OEj having a suspicious behavior.
- analysis means MA may, for example, be made in the form of software modules (or computer or "software”) stored in a memory of the OM master member, for example microcontroller MC. But in a variant they could be made in the form of a combination of electronic circuits (or “hardware") and software modules, as is for example the case of an integrated circuit type FPGA ("Field Programmable Gaste Array ”) or ASIC (specialized circuit).
- the analysis means MA preferably reinitialize each value of a counter c (j) associated with a slave device OEj with respect to the value Cmin. which existed a confirmed absence of defect at the end of its last operation (that is to say before it stops feeding), or at the value Cmax each value of a counter c (j) associated to a slave organ OEj for which there existed a defect confirmed at the end of its last operation.
- This option is intended not to immediately confirm a fault during startup if the value representative of this confirmed defect had been stored before the end of the last operation of the OM master member.
- the supervision of the slave members is independent of the configuration of the system comprising the communication network (for example a vehicle). This results from the fact that we are concerned only with the slave organs that are physically present (that is to say, that respond to the headings transmitted to them by the master organ in its writing frames). Consequently, this makes it possible to limit the software diversity in the master organs. In addition, the invention does not induce additional equipment costs.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Small-Scale Networks (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR1762797A FR3076161B1 (fr) | 2017-12-21 | 2017-12-21 | Dispositif de supervision de defauts d’organe(s) esclave(s) pour un organe maitre d’un reseau multiplexe. |
| PCT/FR2018/053181 WO2019122589A1 (fr) | 2017-12-21 | 2018-12-11 | Dispositif de supervision de défauts d'organe(s) esclave(s) pour un organe maître d'un réseau multiplexé |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3729860A1 true EP3729860A1 (fr) | 2020-10-28 |
Family
ID=62067626
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18833467.6A Ceased EP3729860A1 (fr) | 2017-12-21 | 2018-12-11 | Dispositif de supervision de défauts d'organe(s) esclave(s) pour un organe maître d'un réseau multiplexé |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP3729860A1 (fr) |
| CN (1) | CN111512663B (fr) |
| FR (1) | FR3076161B1 (fr) |
| WO (1) | WO2019122589A1 (fr) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT202000004978A1 (it) | 2020-03-09 | 2021-09-09 | Stmicroelectronics Application Gmbh | Dispositivo elettronico, sistema e veicolo corrispondenti |
| FR3149155B1 (fr) * | 2023-05-23 | 2026-02-27 | Psa Automobiles Sa | Procédé d’auto-adressage sécurisé d’organes esclaves dans un réseau lin |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04100441A (ja) * | 1990-08-20 | 1992-04-02 | Fujitsu Ltd | 通信障害処理方式 |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6159941A (ja) * | 1984-08-30 | 1986-03-27 | Fujitsu Ltd | マルチドロツプ接続端末制御方式 |
| JPH09205687A (ja) * | 1995-11-22 | 1997-08-05 | Meidensha Corp | 遠方監視制御装置の詳細情報伝送方法およびデータ送信失敗検出方法およびフレーム長選定用の回線診断方法およびフレーム長切替方法 |
| US6307835B1 (en) * | 1998-07-10 | 2001-10-23 | Stmicroelectronics, Inc. | Method and apparatus for controlling data flow in data communication networks |
| US7570614B2 (en) * | 2001-01-25 | 2009-08-04 | Bandspeed, Inc. | Approach for managing communications channels based on performance |
| CN100484006C (zh) * | 2004-02-04 | 2009-04-29 | 华为技术有限公司 | 服务通用分组无线业务支持节点对计费网关的管理方法 |
| US7508757B2 (en) * | 2004-10-15 | 2009-03-24 | Alcatel Lucent | Network with MAC table overflow protection |
| DE102006032217A1 (de) * | 2006-07-12 | 2008-01-24 | Robert Bosch Gmbh | Verfahren zum Betreiben eines LIN-Busses |
| JP4519159B2 (ja) * | 2007-07-12 | 2010-08-04 | 株式会社日立製作所 | パケット転送装置及びパケット転送方法 |
| DE602008001243D1 (de) * | 2008-03-10 | 2010-06-24 | Delphi Tech Inc | Störungserkennung und Isolierung eines nachgeschalteten Highspeed-CAN-Netzes |
| JP4581037B2 (ja) * | 2008-07-10 | 2010-11-17 | 国立大学法人名古屋大学 | 中継装置、通信システム及び通信方法 |
| FR2941117B1 (fr) * | 2009-01-15 | 2011-02-11 | Peugeot Citroen Automobiles Sa | Procede et dispositif de controle du reveil, d'organes appartenant a au moins un reseau multiplexe, par comptage de reveils intempestifs |
| JP5240345B2 (ja) * | 2011-11-04 | 2013-07-17 | パナソニック株式会社 | 無線通信装置 |
| FR3010205B1 (fr) * | 2013-08-30 | 2015-08-28 | Peugeot Citroen Automobiles Sa | Procede et dispositif de controle de la transmission de trames de reponse, issues d'organes esclaves appartenant a un reseau lin, a un reseau d'un autre type |
| KR101589224B1 (ko) * | 2014-12-16 | 2016-01-27 | 현대자동차주식회사 | Lin 통신 시스템 및 방법, 그리고 이를 실행하는 컴퓨터 판독 가능한 기록매체 |
| FR3038407B1 (fr) * | 2015-07-02 | 2017-07-21 | Peugeot Citroen Automobiles Sa | Organe maitre a moyens d’analyse de defaut de la couche physique d’un reseau video bidirectionnel |
| FR3043516B1 (fr) * | 2015-11-05 | 2017-12-08 | Peugeot Citroen Automobiles Sa | Procede d’identification du type et du debit d’organe esclave par un organe maitre dans un reseau de communication multiplexe lin |
| FR3051576B1 (fr) * | 2016-05-20 | 2019-06-14 | Peugeot Citroen Automobiles Sa | Reseau multiplexe avec gestion de perte de trame d’etat. |
-
2017
- 2017-12-21 FR FR1762797A patent/FR3076161B1/fr active Active
-
2018
- 2018-12-11 EP EP18833467.6A patent/EP3729860A1/fr not_active Ceased
- 2018-12-11 WO PCT/FR2018/053181 patent/WO2019122589A1/fr not_active Ceased
- 2018-12-11 CN CN201880083254.0A patent/CN111512663B/zh active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04100441A (ja) * | 1990-08-20 | 1992-04-02 | Fujitsu Ltd | 通信障害処理方式 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111512663B (zh) | 2024-05-14 |
| CN111512663A (zh) | 2020-08-07 |
| FR3076161A1 (fr) | 2019-06-28 |
| FR3076161B1 (fr) | 2019-11-15 |
| WO2019122589A1 (fr) | 2019-06-27 |
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