ISO—11783-9-Tractor-ecuTractors and machinery for

文件名称: ISO—11783-9-Tractor-ecu

所属分类: 嵌入式

开发工具:

文件大小: 361kb

下载次数: 0

上传时间: 2019-03-04

提供者: mr_***

下载 (361kb)

不能下载？报告错误

详细说明：Tractors and machinery for agriculture and forestry — Serial control and communications data network —Tractor ECUlsO117839:2002(E Contents Page Foreword Introduction Scope…… Normative references……, 3 Description and specifications.m.. 3.1 3.2 Functions and parameter repackaging 3.3 Identity association........ ■D1日国面面量D 3.4 Classification and minimum supported message sets 222336 3.5 Control of lighting......... ■■国看■,重 3.6 Control of ecu pwr and pwr 3.7 safe- mode operation… 画面面面面E 9 Bibliography…………,… 1重重 11 o Iso 2002- All rights reserved lsO117839:2002(E) Foreword I So(the International Organization for Standardization is a worldwide federation of national standards bodies(Iso member bodies). The work of preparing International Standards is normally carried out through iso technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee International organizations governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC)on all matters of electrotechnical standardization International standards are drafted in accordance with the rules given in the iso/Ec directives, Part 3 The main task of technical committees is to prepare International Standards Draft International Standards adopted by the technical committees are circulated to the member bodies for voting Publication as an International Standard requires approval by at least 75 of the member bodies casting a vote Iso 11783-9 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry, Subcommittee SC 19, Agricultura/ electronics Iso 11783 consists of the following parts, under the general title Tractors and machinery for agriculture and forestry- Serial control and communications data network Part 1: Genera standard for mobile data communication Part 2: Physical layer Part 3: Data link layer Part 4: Network layer Part 5: Network management Part 6: virtual terminal Part 7: Implement messages application layer Part 8: Power train messages - Part 9 Tractor EcU Part 10: Task controller and management information system data interchange Part 11: Data dictionary o Iso 2002-All rights reserved lsO117839:2002(E Introduction Parts 1 to 11 of ISO 11783 specify a communications system for agricultural equipment based on the CAN 2.0 B [1 protocol. SAE J 1939 [2] documents, on which parts of ISo 11783 are based, were developed jointly for use in truck and bus applications and for construction and agriculture applications. Joint documents were completed to allow electronic units that meet the truck and bus SAE J1939 specifications to be used by agricultural and forestry equipment with minimal changes. General information on Iso 11783 is to be found in ISO 11783-1 The purpose of Iso 11783 is to provide an open, interconnected system for on-board electronic systems. It is intended to enable electronic control units (ECUs) to communicate with each other, providing a standardized system The International Organization for Standardization(Iso)draws attention to the fact that it is claimed that compliance with this part of iso 11783 may involve the use of a patent concerning the controller area network (CAN) protocol referred to throughout the document so takes no position concerning the evidence, validity and scope of this patent The holder of this patent has assured iso that he is willing to negotiate licences under reasonable and non- discriminatory terms and conditions with applicants throughout the world. In this respect, the statement of the holder of this patent right is registered with ISo. Information may be obtained from Robert bosch gmbh Wernerstrasse 51 Postfach 30 02 20 D-70442 Stuttgart-Feuerbach Germany Attention is drawn to the possibility that some of the elements of this part of iso 11783 may be the subject of patent rights other than that those identified above. Iso shall not be held responsible for identifying any or all such patent rights o Iso 2002- All rights reserved INTERNATIONAL STANDARD lso117839:2002(E) Tractors and machinery for agriculture and forestry -serial control and communications data network Part 9: Tractor ECU 1 Scope This part of iso 11783 specifies a serial data network for control and communications on forestry or agricultural tractors and mounted, semi-mounted, towed or self-propelled implements. Its purpose is to standardize the method and format of transfer of data between sensor, actuators, control elements, and information-storage and -display units, whether mounted on, or part of, the tractor or implement. This part of iso 11783 describes the tractor ECU the electronic control unit that provides the gateway between the network 's tractor and implement buses, as well as performing other functions NOTE The tractor ECU is also the node that represents the tractor, or analogous functions within self-propelled machines for functions such as the virtual terminal on the implement bus 2 Normative references The following normative documents contain provisions which, through reference in this text, constitute provisions of this part of Iso 11783 For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of iso 11783 are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of Iso and IEc maintain registers of currently valid International Standards ISO 11783-1: 1), Tractors and machinery for agriculture and forestry- Serial control and communications data network- Part 1: Genera standard for mobile data communication ISo 11783-2, Tractors and machinery for agriculture and forestry- Serial control and communications data network- Part 2 Physica/ layer ISo 11783-4: 2001, Tractors and machinery for agriculture and forestry-- Serial control and communications data network- Part 4: Network layer ISo 11783-5, Tractors and machinery for agriculture and forestry- Serial control and communications data network- Part 5: Network management IS0 11783-7-1), Tractors and machinery for agriculture and forestry- Serial control and communications data network- Part 7: Implement messages application layer ISo 11783-8-1), Tractors and machinery for agriculture and forestry Serial control and communications data network- Part 8: Power train messages ISo 11786, Agricultura/ tractors and machinery Tractor-mounted sensor interface- Specifications To be published o Iso 2002- All rights reserved lsO117839:2002(E) 3 Description and specifications 3.1 Nodes 3.1.1 General On a system with an Iso 11783 network, the tractor ECU functions as the gateway (see iso 11783-4)between the tractor and implement buses The tractor ECU shall have at least one node for connection to the implement bus. However, when the tractor has both an implement and a tractor bus, the tractor eCu shall have at least two nodes -the tractor ECU implement bus node and the tractor ecu tractor bus node 3.1.2 Node referencing For communication network references to either of a tractor ecus nodes port/node 1 shall be used as the implement bus node, port/node 2 shall be used as the tractor bus node, where a tractor bus is installed See Iso 11783-4: 2001, Figure 1 3.1.3 Node physical layer The implement bus node of the tractor ECU shall be designed so that it can connect to the physical layer specified in ISo 11783-2. The tractor bus node may connect to another physical layer, but the Iso 11783 physical layer is recommended NOTE Throughout this part of iso 11783, it is assumed that both nodes have been designed for the iso 11783 physical layer 3.2 Functions and parameter repackaging 3.2.1 General As the ECu (electronic control unit) representing the tractor and its messages on the implement bus, the tractor ECU is responsible for the communications between the tractor and the other ecus on that bus to this end it must appear to the system to be the same as any other ECu on the implement bus. Particularly important is that the tractor's access to the virtual terminal (vt)be identical to that of any other implement. The tractor EC is also responsible, as part of its network interconnection functions, for converting to and from any implement bus process data and tractor bus messages with appropriate parameters, in order that the tractor can operate on a process data message in a classification-appropriate manner 3.2.2 Messages from tractor bus to implement bus The tractor ECU shall collect from the tractor bus or directly wired sensors such as those specified in ISo 11786 all information contained within the messages identified by a particular classification. It shall then redirect these messages on the implement bus using its own specific source address SA),while establishing specific destinations for specific messages. When the tractor ECu places requested information on the implement bus, it should use the global destination in order to reduce bandwidth in cases where there are multiple requests for the same information (and also reduce filter database requirements in the tractor ECU) 3.2.3 Messages from implement bus to tractor bus The tractor ECU shall receive from the implement bus all messages designed to control tractor functions, including process data, as appropriate for the classification o Iso 2002-All rights reserved lsO117839:2002(E The tractor ECU shall then parse these messages in a manner appropriate to the tractor design It shall then redirect them, globally or to the specific controlling destinations, on the tractor bus and using its own specifiC SA 3.2.4 Messages from tractor ECU to implement bus The tractor ECU may originate destination-specific messages on the implement bus representing the tractor as any other implement ECU EXAMPLE Placing a tractor performance screen on the v 3.3 Identity association Tractors shall have the same access to implement bus services(e. g. VT, task controllers, management computer gateway) as that possessed by the implements. To avoid these services requiring two different network drivers, one for implements and another for tractors, the grouping as members of the tractor set of the ECUs on the tractor bus shall be structured by the tractor ECU analogous to the grouping of the ECUs by an implement controller or a working set master 3. 4 Classification and minimum supported message sets 3.4.1 General For the identification of a tractor on the implement bus by tractor ECU NAME, see iso 11783-1; for NamE fields see|sO11783-5 3.4.2 Tractor-implement interface classifications 3. 4.2.1 General a tractor class defines a minimum set of messages a tractor ECU is able to provide on the implement bus to connected implements. There are three main tractor-implement interface classes for a tractor with an iso 11783 bus system To enable it to use a specific numbered classification, the tractor ECU shall acknowledge all the messages in each of the three classes of interface given in 3.4.2.2 to 3.4.2. 4. a tractor may maintain a classification when a required feature is physically missing from the tractor (i.e. if a rear hitch or Pto is not installed); the tractor ECU shall respond with message parameters set to not available"for those parameters associated with the missing features. If the data or controls required to produce the messages are missing when the feature is installed, the tractor shall be classified at the classification of the provided messages and not that of the installed features with any of the numbered classifications. These shall be appended as follows. eatures may be used in conjunction In addition, lettered addenda addressing groupings of messages related to fea class xN tractor class xf tractor where x is the class number, and n and f represent navigational and front-mounted implement messages respectively(see 3.4.2.5 and 3.4. 2.6) The tractor manufacturer may provide additional messages without providing the complete set of messages of the next highest class of tractor ECU. Connected implement ECUs can query the tractor ECu to determine the classification and the functions provided, using a tractor facilities message(see ISo 11783-7) o Iso 2002- All rights reserved lsO117839:2002(E) 3.4.2.2 Tractor-implement interface-Class a tractor with a class 1 tractor-implement interface has a simple network-supporting ECU that provides the basic tractor internal measurements given in ISo 11786. By allowing the connection of existing sensors to a simple network-connected ECU, use of this class of interface enables tractor manufacturers to become quickly ISO-conformant. However, it should not be used for new tractor designs The minimum set of information shall include power management and lighting The tractor with this ECU supports the following parameters, which are specified in iso 11783-7, except for engine speed, specified in ISo 11783-8 a) Power management key switch state maximum time of tractor power; maintain power reques b) Speed information wheel-based implement speed ground-based implement speed; engine speed: message transmission rate shall be 100 ms c)Hitch Information rear hitch position rear implement in-work indication d) pto(power take-off)information rear Pto output shaft speed rear PTO output shaft engagement e) Lighting left-turn signal lights right-turn signal lights marker light left stop light right stop light implement rear work light f) Language-specific parameter storage in tractor ECU, VT or both o Iso 2002-All rights reserved

(系统自动生成,下载前可以参看下载内容)