CN102518173A - CAN (Controller Area Network) bus fault diagnostic equipment for excavator - Google Patents

CAN (Controller Area Network) bus fault diagnostic equipment for excavator Download PDF

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Publication number
CN102518173A
CN102518173A CN2011104056290A CN201110405629A CN102518173A CN 102518173 A CN102518173 A CN 102518173A CN 2011104056290 A CN2011104056290 A CN 2011104056290A CN 201110405629 A CN201110405629 A CN 201110405629A CN 102518173 A CN102518173 A CN 102518173A
Authority
CN
China
Prior art keywords
display screen
excavator
stranded wire
controller
bus
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.)
Pending
Application number
CN2011104056290A
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Chinese (zh)
Inventor
封迎春
吕启峰
汪春晖
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sany Heavy Machinery Ltd
Original Assignee
Sany Heavy Machinery Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sany Heavy Machinery Ltd filed Critical Sany Heavy Machinery Ltd
Priority to CN2011104056290A priority Critical patent/CN102518173A/en
Priority to PCT/CN2012/074385 priority patent/WO2013082914A1/en
Publication of CN102518173A publication Critical patent/CN102518173A/en
Pending legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/20—Drives; Control devices
    • E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
    • E02F9/2095—Control of electric, electro-mechanical or mechanical equipment not otherwise provided for, e.g. ventilators, electro-driven fans
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/26—Indicating devices
    • E02F9/267—Diagnosing or detecting failure of vehicles
    • E02F9/268—Diagnosing or detecting failure of vehicles with failure correction follow-up actions

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Component Parts Of Construction Machinery (AREA)

Abstract

The invention provides CAN (Controller Area Network) bus fault diagnostic equipment for an excavator. A CAN bus comprises double stranded wires which respectively are a CAN-H stranded wire and a CAN-L stranded wire. The CAN bus fault diagnostic equipment is characterized by comprising a first indicating lamp, a second indicating lamp, a display screen, a controller and a plurality of resistors, wherein one end of the first indicating lamp is grounded and the other end of the first indicating lamp is connected with the CAN-H stranded wire; one end of the second indicating lamp is grounded and the other end of the second indicating lamp is connected with the CAN-L stranded wire; a grounding terminal of the display screen is grounded; a CAN-H input end of the display screen is connected with the CAN-H stranded wire; a CAN-L input end of the display screen is connected with the CAN-L stranded wire; a grounding terminal of the controller is grounded; a CAN-H input end of the controller is connected with the CAN-H stranded wire; a CAN-L input end of the controller is connected with the CAN-L stranded wire; and a plurality of resistors are arranged between the CAN-H stranded wire and the CAN-L stranded wire. According to the invention, the communication state of the CAN bus can be directly judged by the simple and practical indicating lamps without other any detection equipment so as to provide the visual judgment basis for the routine inspection before the excavator operates and also provide the basis for overhauling when the communication is abnormal.

Description

A kind of excavator CAN bus failure diagnostic device
Technical field
The present invention relates to a kind of bus failure detection technique, relate in particular to a kind of excavator CAN bus failure diagnostic device.
Background technology
At present, originally only be widely used on the excavator in the CAN mechanics of communication of using on the automobile, particularly large-tonnage, have on the excavator of a plurality of controls, displaing core.
The CAN mechanics of communication this as the control system saves of excavator wire harness, provide convenience, but also often because CAN communication itself, causes the excavator can't operate as normal unusually.
One Chinese patent application number provides a kind of scheme of the Sequenced Flashing Light System based on the CAN bus for the open file of CN200920247781.But its maintenance still is not very convenient.
A kind of diagnostic method to CAN communication itself is provided, promptly causes the diagnostic method of communication abnormality just to seem particularly important by CAN line fault.
Summary of the invention
The objective of the invention is to solve the inconvenient deficiency of maintenance in the prior art, can need not other any checkout equipments, just can directly judge CAN bus communication state with the maintenance that realizes the CAN bus failure.
Based on above-mentioned purpose, the present invention discloses a kind of excavator CAN bus failure diagnostic device, and said CAN bus is a twisted-pair feeder, is respectively CAN-H and CAN-L, and wherein, said diagnostic device comprises:
First indicator lamp, an end ground connection, the other end connects CAN-H;
Second indicator lamp, an end ground connection, the other end connects CAN-L;
Display screen, the earth terminal ground connection of said display screen, the CAN-H input of said display screen connects CAN-H, and the CAN-L input of said display screen connects CAN-L;
Controller, the earth terminal ground connection of said controller, the CAN-H input of said controller connects CAN-H, and the CAN-L input of said display screen connects CAN-L;
Be provided with some resistance between said CAN-H and the CAN-L.
Above-mentioned excavator CAN bus failure diagnostic device wherein, also comprises the GPS device, the earth terminal ground connection of said GPS device, and the CAN-H input of said GPS device connects CAN-H, and the CAN-L input of said GPS device connects CAN-L.
Above-mentioned excavator CAN bus failure diagnostic device, wherein, the operating voltage of said display screen, controller and GPS device is 24V.
Above-mentioned excavator CAN bus failure diagnostic device, wherein, the span of the voltage-to-ground of said CAN-H and CAN-L is between-3～32V.
Above-mentioned excavator CAN bus failure diagnostic device, wherein, said first indicator lamp is a red led.
Above-mentioned excavator CAN bus failure diagnostic device, wherein, said second indicator lamp is a green indicating lamp.
The present invention need not other any checkout equipments through simple and practical indicator lamp, just can directly judge CAN bus communication state, for the routine inspection before the operation digging machine provides basis for estimation intuitively, also is that the maintenance when communication abnormality occurring provides basis for estimation.
Description of drawings
Through reading the detailed description of non-limiting example being done with reference to following accompanying drawing, it is more obvious that the present invention and characteristic thereof, profile and advantage will become.Mark identical in whole accompanying drawings is indicated identical part.Painstakingly proportionally do not draw accompanying drawing, focus on illustrating purport of the present invention.In the accompanying drawings, for cheer and bright, the part parts have been amplified.
Fig. 1 shows according to of the present invention, a kind of excavator CAN bus failure diagnostic device structural representation.
The specific embodiment
Below in conjunction with the accompanying drawing and the specific embodiment the present invention is further elaborated.The specific embodiment described herein only is used to explain the present invention, and is not used in qualification protection scope of the present invention.
With reference to a kind of excavator CAN bus failure diagnostic device shown in the figure 1, the CAN bus is a twisted-pair feeder, is respectively CAN-H and CAN-L, among Fig. 1, and the first indicator lamp L1, an end ground connection, the other end connects CAN-H;
The second indicator lamp L2, an end ground connection, the other end connects CAN-L;
Display screen 101, the earth terminal ground connection of display screen 101, the CAN-H input of display screen 101 connects CAN-H, and the CAN-L input of display screen 101 connects CAN-L;
Controller 102, the earth terminal ground connection of controller 102, the CAN-H input of controller 102 connects CAN-H, and the CAN-L input of display screen 101 connects CAN-L;
Be provided with some resistance between CAN-H and the CAN-L, two resistance be shown among Fig. 1 be respectively R1 and R2.
In a preference, also comprise GPS device 103, the earth terminal ground connection of GPS device 103, the CAN-H input of GPS device 103 connects CAN-H, and the CAN-L input of GPS device 103 connects CAN-L.
In a specific embodiment, the operating voltage of display screen 101, controller 102 and GPS device 103 is 24V.
Further, the span of the voltage-to-ground of CAN-H and CAN-L is between-3～32V.
In order to play the alarm booster action, the first indicator lamp L1 is a red led.
On the other hand, the second indicator lamp L2 is a green indicating lamp.
Using when of the present invention, the problem that two circuits possibly run into has:
1 CAN-H breaks off
2 CAN-L breaks off
3 CAN-H and power supply short circuit
4 CAN-L and power supply short circuit
5 CAN-H and ground short circuit
6 CAN-L and ground short circuit
7 CAN-H and CAN-L short circuit
Under "on" position: as break down 1,2,5,6, then indicator lamp can not lighted;
As break down 3,4, then indicator lamp can be very bright;
As break down 7, then two indicator lamp brightness are identical.
In display screen, increase the additional alarm function, when the CAN bus occurs when unusual, two malfunction indicator lamp are sent alarm signal, and display screen shows 1～No. 7 warning details simultaneously, and reminds operator to carry out the line related maintenance.
It will be appreciated by those skilled in the art that display screen increases relevant warning function, the magnitude of voltage that is input as CAN-H and CAN-L of display screen is output as failure code 1～No. 7.Therefore display screen warning input is to realize through different wire harness with the indicator lamp warning function, if an inefficacy also has another one work.
Those skilled in the art combine prior art and the foregoing description can realize said variant, and such variant does not influence flesh and blood of the present invention, does not repeat them here.
More than preferred embodiment of the present invention is described.It will be appreciated that the present invention is not limited to above-mentioned specific implementations, equipment of wherein not describing in detail to the greatest extent and structure are construed as with the common mode in this area to be implemented; Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention; Or being revised as the equivalent embodiment of equivalent variations, this does not influence flesh and blood of the present invention.Therefore, every content that does not break away from technical scheme of the present invention, all still belongs in the scope of technical scheme protection of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.

Claims (6)

1. excavator CAN bus failure diagnostic device, said CAN bus is a twisted-pair feeder, is respectively CAN-H and CAN-L, it is characterized in that, said diagnostic device comprises:
First indicator lamp, an end ground connection, the other end connects CAN-H;
Second indicator lamp, an end ground connection, the other end connects CAN-L;
Display screen, the earth terminal ground connection of said display screen, the CAN-H input of said display screen connects CAN-H, and the CAN-L input of said display screen connects CAN-L;
Controller, the earth terminal ground connection of said controller, the CAN-H input of said controller connects CAN-H, and the CAN-L input of said display screen connects CAN-L;
Be provided with some resistance between said CAN-H and the CAN-L.
2. excavator CAN bus failure diagnostic device according to claim 1; It is characterized in that, also comprise the GPS device, the earth terminal ground connection of said GPS device; The CAN-H input of said GPS device connects CAN-H, and the CAN-L input of said GPS device connects CAN-L.
3. excavator CAN bus failure diagnostic device according to claim 2 is characterized in that the operating voltage of said display screen, controller and GPS device is 24V.
4. excavator CAN bus failure diagnostic device according to claim 1 is characterized in that the span of the voltage-to-ground of said CAN-H and CAN-L is between-3～32V.
5. excavator CAN bus failure diagnostic device according to claim 1 is characterized in that said first indicator lamp is a red led.
6. excavator CAN bus failure diagnostic device according to claim 1 is characterized in that said second indicator lamp is a green indicating lamp.
CN2011104056290A 2011-12-08 2011-12-08 CAN (Controller Area Network) bus fault diagnostic equipment for excavator Pending CN102518173A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN2011104056290A CN102518173A (en) 2011-12-08 2011-12-08 CAN (Controller Area Network) bus fault diagnostic equipment for excavator
PCT/CN2012/074385 WO2013082914A1 (en) 2011-12-08 2012-04-19 Excavator can bus trouble-shooting device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011104056290A CN102518173A (en) 2011-12-08 2011-12-08 CAN (Controller Area Network) bus fault diagnostic equipment for excavator

Publications (1)

Publication Number Publication Date
CN102518173A true CN102518173A (en) 2012-06-27

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CN2011104056290A Pending CN102518173A (en) 2011-12-08 2011-12-08 CAN (Controller Area Network) bus fault diagnostic equipment for excavator

Country Status (2)

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CN (1) CN102518173A (en)
WO (1) WO2013082914A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103422525A (en) * 2013-08-24 2013-12-04 烟台兴业机械股份有限公司 Fault intelligent diagnosing and monitoring system for underground scraper
CN105182151A (en) * 2014-05-27 2015-12-23 通用汽车环球科技运作有限责任公司 Vmethod and apparatus for open-wire fault detection and diagnosis in a controller area network
CN113431126A (en) * 2021-06-25 2021-09-24 铜陵有色金属集团股份有限公司 Remote control system and method for underground carry scraper
CN113911920A (en) * 2021-10-14 2022-01-11 上海振华重工(集团)股份有限公司 CAN touch screen integrated controller applied to double-box lifting appliance

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* Cited by examiner, † Cited by third party
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CN107861457B (en) * 2017-11-08 2023-08-01 江苏驷博电气有限公司 Programmable logic control module
US11422182B2 (en) 2020-03-29 2022-08-23 Maxim Integrated Products, Inc. Systems and methods for fault detection and reporting through serial interface transceivers

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JP2008111269A (en) * 2006-10-30 2008-05-15 Komatsu Ltd Image display system
CN201495572U (en) * 2009-06-25 2010-06-02 徐州徐挖约翰迪尔机械制造有限公司 Electronic monitoring device for wheeled excavators
CN101824831A (en) * 2010-04-16 2010-09-08 山推工程机械股份有限公司 Automatic fault diagnosis system of bulldozer
CN101881035A (en) * 2010-06-25 2010-11-10 三一重机有限公司 Alarm control system and method for fuel oil system of excavator

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JP4539947B2 (en) * 2001-08-03 2010-09-08 日立建機株式会社 Warning control device for construction machinery
CN101883146A (en) * 2010-06-30 2010-11-10 三一重机有限公司 Remote fault diagnosis method for digging machine
CN201857630U (en) * 2010-10-28 2011-06-08 三一重机有限公司 Fault diagnosis system for excavator

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Publication number Priority date Publication date Assignee Title
CN2820965Y (en) * 2005-09-23 2006-09-27 天津工程机械研究院 Monitoring and fault diagnostic device for bulldozer
JP2008111269A (en) * 2006-10-30 2008-05-15 Komatsu Ltd Image display system
CN201495572U (en) * 2009-06-25 2010-06-02 徐州徐挖约翰迪尔机械制造有限公司 Electronic monitoring device for wheeled excavators
CN101824831A (en) * 2010-04-16 2010-09-08 山推工程机械股份有限公司 Automatic fault diagnosis system of bulldozer
CN101881035A (en) * 2010-06-25 2010-11-10 三一重机有限公司 Alarm control system and method for fuel oil system of excavator

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103422525A (en) * 2013-08-24 2013-12-04 烟台兴业机械股份有限公司 Fault intelligent diagnosing and monitoring system for underground scraper
CN103422525B (en) * 2013-08-24 2015-11-18 烟台兴业机械股份有限公司 The intelligent fault diagnosis surveillance of underground carry scraper
CN105182151A (en) * 2014-05-27 2015-12-23 通用汽车环球科技运作有限责任公司 Vmethod and apparatus for open-wire fault detection and diagnosis in a controller area network
CN105182151B (en) * 2014-05-27 2018-10-09 通用汽车环球科技运作有限责任公司 Method and apparatus for the breaking line fault detect and diagnose in controller local area network
CN113431126A (en) * 2021-06-25 2021-09-24 铜陵有色金属集团股份有限公司 Remote control system and method for underground carry scraper
CN113911920A (en) * 2021-10-14 2022-01-11 上海振华重工(集团)股份有限公司 CAN touch screen integrated controller applied to double-box lifting appliance
CN113911920B (en) * 2021-10-14 2024-01-23 上海振华重工(集团)股份有限公司 CAN touch screen integrated controller applied to double-box lifting appliance

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Application publication date: 20120627