CN202205091U

CN202205091U - Hand-held diesel engine fault diagnostic instrument

Info

Publication number: CN202205091U
Application number: CN2011202927146U
Authority: CN
Inventors: 杨卫平; 雷军; 陈志娟; 阳俊; 胡友耀; 李金广; 章明; 王梦华; 王建华; 刘泉
Original assignee: First Tractor Co Ltd
Current assignee: First Tractor Co Ltd
Priority date: 2011-08-12
Filing date: 2011-08-12
Publication date: 2012-04-25
Anticipated expiration: 2021-08-12

Abstract

A hand-held diesel engine fault diagnostic instrument comprises: a main protocol chip module, a power supply conversion module, a single-chip microcomputer module, a serial port bus module, an LCD (Liquid Crystal Display) module, a control panel module and a bus communication module; wherein an electric control unit to be diagnosed inputs fault information to the main protocol chip module through the bus communication module, then the main protocol chip module sends a processed signal to a monitoring computer through the serial port bus module, at the same time, the main protocol chip module is connected with the single-chip microcomputer module; the single-chip microcomputer module is not only connected with the monitoring computer through the serial port bus module, but also connected with the LCD module; the single-chip microcomputer module is connected with the LCD module and the control panel module; and the power supply conversion module is connected with the main protocol chip module, the single-chip microcomputer module and the electric control unit to be diagnosed. The hand-held diesel engine fault diagnostic instrument of the utility model can quickly realize fault diagnosis for the electric control unit of the diesel engine, can support a plurality of communication protocols, and may have strong universality and function expansibility.

Description

Hand-held diesel engine failure diagnosis appearance

Technical field

The utility model belongs to instrument field, relates to a kind of hand-held diesel engine failure diagnosis appearance.

Background technology

Along with fast development, the widespread use of new and high technology and the improving constantly of electronic degree of Domestic Automotive Industry, also increasingly high to the requirement of vehicle detection and diagnosis.The leap that detects, diagnoses modern Artificial Intelligence Instrument to detect, diagnose from the dependence experience has been experienced in the development of vehicle detection, diagnostic techniques.For the detection and the diagnosis of increasingly sophisticated vehicle electrically controlling system, adopt failure diagnostic apparatus (being commonly called as demoder) just to seem extremely important.

The utility model content

The purpose of the utility model be to provide a kind of efficient and convenient, integrated level is high, perfect in shape and function, expandability is strong, antijamming capability the is strong hand-held diesel engine failure diagnosis appearance that is used for diesel electric-controlled system fault diagnosis.

The utility model can adopt following technical scheme to achieve the above object: a kind of hand-held diesel engine failure diagnosis appearance comprises: master agreement chip module, power transfer module, one-chip computer module, serial bus module, LCD LCD MODULE, control panel module, bus communication module; ECU to be diagnosed is input to the master agreement chip module to failure message through bus communication module; The master agreement chip module is sent into monitoring computer to the signal after handling through the serial bus module; The master agreement chip module links to each other with one-chip computer module simultaneously; One-chip computer module both linked to each other with monitoring computer through the serial bus module; Link to each other with the LCD LCD MODULE again, one-chip computer module links to each other with the control panel module with the LCD LCD MODULE, and power transfer module connects master agreement chip module, one-chip computer module and ECU to be diagnosed.

The utility model can reach following good effect: can realize quickly and easily the diesel-engine road vehicle ECU is carried out fault diagnosis through the hand-held failure diagnostic apparatus; Have good stable property and on-the-spot anti-interference; The testing result good reproducibility; Support multiple kinds, have stronger versatility, and very strong function expansibility is arranged.

Description of drawings

Fig. 1 is the structural representation block diagram of hand-held diesel engine failure diagnosis appearance.

Embodiment:

As shown in Figure 1, system mainly is made up of following components: master agreement chip module 1, power transfer module 2, one-chip computer module 3, serial bus module 4, LCD LCD MODULE 5, control panel module 6, bus communication module 7.ECU 8 to be diagnosed is input to master agreement chip module 1 to failure message through bus communication module 7; Master agreement chip module 1 is sent into monitoring computer 9 to the signal after handling through serial bus module 4; Master agreement chip module 1 also can link to each other with one-chip computer module 3 simultaneously; One-chip computer module 3 links to each other with monitoring computer 9 on the one hand through serial bus module 4 and downloads; Link to each other with LCD LCD MODULE 5 on the one hand and carry out serial port drive; One-chip computer module 3 directly links to each other with control panel module 6 with LCD LCD MODULE 5 and drives and control, and power transfer module 2 connects master agreement chip module 1, one-chip computer module 3 and ECU 8 to be diagnosed.

When diagnosing, power transfer module 2 is mainly master agreement chip module 1 and one-chip computer module 3 power supplies after obtaining the power supply input and carry out voltage transitions from ECU to be diagnosed 8.ECU 8 to be diagnosed can be that CAN bus, K line or J1850 transmission fault sign indicating number are to master agreement chip module 1 through three kinds of bus communication modes; Master agreement chip module 1 can use two kinds of pattern outputs to show DTC; A kind of link to each other to come through serial bus module 4 and monitoring computer 9 directly carry out fault diagnosis operation, another kind ofly drive LCD LCD MODULE 5 and the 6 convenient operations such as reading, reset that realize DTCs of control panel module through one-chip computer module 3.Wherein the type of drive of LCD LCD MODULE 5 can adopt the parallel port directly to drive or carry out serial port drive through serial communication module 4.

Claims

1. a hand-held diesel engine failure diagnosis appearance comprises: master agreement chip module (1), power transfer module (2), one-chip computer module (3), serial bus module (4), LCD LCD MODULE (5), control panel module (6), bus communication module (7); It is characterized in that: ECU to be diagnosed (8) is input to master agreement chip module (1) to failure message through bus communication module (7); Master agreement chip module (1) is sent into monitoring computer (9) to the signal after handling through serial bus module (4); Master agreement chip module (1) links to each other with one-chip computer module (3) simultaneously; One-chip computer module (3) both linked to each other with monitoring computer (9) through serial bus module (4); Link to each other with LCD LCD MODULE (5) again; One-chip computer module (3) links to each other with control panel module (6) with LCD LCD MODULE (5), and power transfer module (2) connects master agreement chip module (1), one-chip computer module (3) and ECU (8) to be diagnosed.