CN101110132A - Vehicle mounted fault diagnosis device - Google Patents
Vehicle mounted fault diagnosis device Download PDFInfo
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- CN101110132A CN101110132A CNA200710029761XA CN200710029761A CN101110132A CN 101110132 A CN101110132 A CN 101110132A CN A200710029761X A CNA200710029761X A CN A200710029761XA CN 200710029761 A CN200710029761 A CN 200710029761A CN 101110132 A CN101110132 A CN 101110132A
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 39
- 238000004891 communication Methods 0.000 claims description 29
- 238000012545 processing Methods 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 230000003534 oscillatory effect Effects 0.000 claims description 4
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000010365 information processing Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The invention discloses a car vehicle failure diagnosis device, which comprises a vehicle diagnosis seat, a vehicle diagnosis circuit installed on the diagnosis seat, a vehicle ECU and a car GPS device. The technical proposal of the invention is characterized in that: the vehicle diagnosis circuit is connected to the vehicle ECU; a wireless radiofrequency module is positioned respectively on the vehicle diagnosis circuit and the car GPS device to connect them. Therefore, the invention enables drivers to get information of vehicle status and take countermeasures according to actual failure condition, thus effectively preventing potential safety loopholes to drivers due to system failure during the running.
Description
Technical field
The present invention relates to automotive field, more particularly relate to the failure diagnosis apparatus of automobile.
Background technology
Along with development of electronic technology, modern automobile is developed to comprehensive Electronic Control direction by original mechanical manual control, motor car engine not only, and the chassis system also realizes automatically controlledization, at present, the general ECU (Electrical Control Unit) (ECU) that adopts some in the automobile, for the convenience of producing and keeping in repair, car manufactures has added special communication interface (or being referred to as the vehicle diagnosis interface) in these have the automobile of ECU, by the vehicle diagnosis interface, utilize the outside specialized equipment that is called as demoder to diagnose to automobile, this demoder is by the automobile interface circuit, microprocessor, data display screen and keyboard are imported four parts, and all concentrate in the demoder, wherein automobile interface circuit and microprocessor have constituted the Control on Communication part of auto communication, microprocessor is finished the information processing function simultaneously, keyboard is used for input decoder user's various control informations, display screen is used for the information after the display process, and intuitively show with Chinese character and graphics mode, also can carry out complete detection automatically to the different system test point of automobile, but because this device structure complexity, cost an arm and a leg, only be applicable to automobile inspection scene or auto repair workshop, and in vehicle-mounted automatic checkout equipment, generally comprise and be arranged at sensor and the channel interface circuit thereof that the automobile corresponding site is formed the technology status monitoring assembly, sound circuit, power amplification circuit and loudspeaker, when monitoring out multiple incipient fault when jeopardizing the traffic safety situation, can order broadcast the caution voice one by one, accomplish not report by mistake, do not fail to report yet, but lack the system that shows and store the details of fault, can only when breaking down, just send by car prompting, make the people can not be in time or before car breaks down, grasp the situation of car, take appropriate measures according to the concrete condition of fault.
Summary of the invention
Purpose of the present invention is exactly that provide for the deficiency that solves prior art a kind of can not only in time detect and the fault of each system of display automobile and the vehicle mounted fault diagnosis device that combines together with automobile.
The present invention adopts following technical solution to realize above-mentioned purpose: a kind of vehicle mounted fault diagnosis device, comprise the vehicle diagnosis seat and be installed in vehicle diagnosis circuit on this diagnose connector, ECU, automobile GPS navigation equipment are set on the automobile, it is characterized in that, described vehicle diagnosis circuit connects automobile ECU, is respectively equipped with wireless radio frequency modules on vehicle diagnosis seat and the automobile GPS navigation equipment and passes through this module radio communication to connect.
As further specifying of such scheme, described wireless radio frequency modules comprises oscillatory circuit, control circuit and microprocessing unit, wireless radio frequency modules on vehicle diagnosis seat and the automobile GPS navigation equipment is equipped with transmission end and receiving end, this receiving end comprises demodulator circuit, communication interface and CPU (central processing unit), demodulator circuit connects the microprocessor of single-chip microcomputer, microprocessor connects communication interface, and communication interface is connected with CPU (central processing unit).
Described single-chip microcomputer adopts STC89C516RD+, and its inside has the program's memory space of 64M byte.
Be distributed with a plurality of sensors and actuating unit in the described automobile ECU, the automobile ECU internal memory contains the failure code of each systems such as engine system, air bag system, automatic gear-box system and anti-lock braking system.
Described automobile GPS navigation equipment comprises microprocessor, LCD, memory and auxiliary circuit, is provided with the code translator of automobile ECU failure code in this equipment auxiliary circuit.
Automatic alarm system is set, the navigator external buzzer on the described automobile GPS navigation equipment.
The function that the present invention adopts above-mentioned technical solution to realize: the On-Board Diagnostics (OBD) functional module is installed on the vehicle diagnosis seat, provide 4 big functions: one, read the failure code of each system of automobile ECU stored, and failure condition is sent and is presented on the host display with wireless mode by diagnostic module.Two, remove the failure logging that is stored in the automobile ECU.Three, read some real-time working parameters of engine, as coolant temperature etc.Four, has the failure logging query function, for motor vehicle repair provides reference.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is a circuit frame principle figure of the present invention;
Fig. 3 is a circuit frame principle figure of the present invention;
Fig. 4 is a circuit theory synoptic diagram of the present invention.
Embodiment
Embodiment 1
As Fig. 1～shown in Figure 4, a kind of automobile failure diagnosis device of the present invention, comprise the vehicle diagnosis seat and be installed in vehicle diagnosis circuit on this diagnose connector, ECU is set on the automobile, automobile GPS navigation equipment, automobile GPS navigation equipment comprises microprocessor, LCD, memory and auxiliary circuit, be provided with the code translator of automobile ECU failure code in this equipment auxiliary circuit, the vehicle diagnosis circuit connects automobile ECU, be respectively equipped with wireless radio frequency modules on vehicle diagnosis seat and the automobile GPS navigation equipment and be interconnected by this module, wireless radio frequency modules comprises oscillatory circuit, control circuit and microprocessing unit, this oscillatory circuit is by transistor, resistance, electric capacity, inductance, change-over switch, and assembly such as quartz (controlled) oscillator connects to form, wireless radio frequency modules on vehicle diagnosis seat and the automobile GPS navigation equipment is equipped with transmission end and receiving end, this receiving end comprises demodulator circuit, communication interface and CPU (central processing unit), demodulator circuit connects the microprocessor of single-chip microcomputer, the present embodiment single-chip microcomputer adopts STC89C516RD+, its inside has the program's memory space of 64M byte, microprocessor connects communication interface, communication interface is connected with CPU (central processing unit), on this automobile GPS navigation equipment automatic alarm system is set, navigator external buzzer and display screen, the ECU internal memory contains the failure code of each system, before automobile breaks down, diagnostic module reads the failure code of each system that stores in the automobile ECU, and send out with the form of wireless transmission packet failure code by wireless radio frequency modules, to receive corresponding packet by the functional module on the navigation product handles through Single Chip Microcomputer (SCM) system, transfer WINCE system communication on serial ports RS232 level and the navigator to, this system will decode corresponding detailed trouble information automatically in the failure information database of having deposited, and on host display, show, the car owner can inquire about vehicle condition by entering system, in time understand the basic condition of each system of automobile, easy to use.
Embodiment 2
Present embodiment place different from the embodiment described above is, described automobile GPS navigation equipment and vehicle diagnosis seat connect the infrared communications set with infrared modulation and demodulation function, this device is connected with the infrared communication controller, the failure code of each system that stores in this controller and the ECU is connected by the microprocessor of infrared communication controller automobile GPS navigation equipment, and adopt the data transmission line TXD of asynchronism transceiver (UART) interface and Data Receiving line RXD signal wire to be used for receiving and sending data between infrared communication controller and the microprocessor, the infrared communication controller is transported to infrared communications set with the infrared communication data stream that produces by cable, by infrared communications set data are carried out infrared modulation and demodulation, form with infrared light sends to automobile GPS navigation equipment with data again, and automobile GPS navigation equipment self also sends to automobile ECU by infrared communications set with data, realizes bidirectional data communication.
In the use, earlier the vehicle diagnosis seat is connected on the automobile ECU, and respectively with vehicle diagnosis seat and the external infrared communication module of car navigation device, after diagnose connector reads the failure code of each system that stores in the ECU, launch by infrared communication module, and receive and to handle through Single Chip Microcomputer (SCM) system by being connected infrared communication module on the car navigation device, transfer WINCE system communication on serial ports RS232 level and the navigator to, and automatic decoding goes out corresponding detailed trouble information, shows on display screen.
The present invention is not limited to the foregoing description, can do suitable modification to the foregoing description as those of ordinary skill in the art, and single-chip microcomputer can also be taked other microprocessor except adopting STC89C516RD+ simultaneously, and the present invention does not do detailed description at this.
Claims (6)
1. vehicle mounted fault diagnosis device, comprise the vehicle diagnosis seat and be installed in the vehicle diagnosis circuit that connects the power output end of automobile on this diagnose connector, ECU, automobile GPS navigation equipment are set on the automobile, it is characterized in that, described vehicle diagnosis circuit connects automobile ECU, is respectively equipped with wireless radio frequency modules on vehicle diagnosis circuit and the automobile GPS navigation equipment and passes through this module radio communication to connect.
2. a kind of vehicle mounted fault diagnosis device according to claim 1, it is characterized in that, described wireless radio frequency modules comprises oscillatory circuit, control circuit and microprocessing unit, wireless radio frequency modules on vehicle diagnosis seat and the automobile GPS navigation equipment is equipped with transmission end and receiving end, this receiving end comprises demodulator circuit, communication interface and CPU (central processing unit), demodulator circuit connects the microprocessor of single-chip microcomputer, and microprocessor connects communication interface, and communication interface is connected with CPU (central processing unit).
3. a kind of vehicle mounted fault diagnosis device according to claim 2 is characterized in that, described single-chip microcomputer adopts STC89C516RD+, and its inside has the program's memory space of 64M byte.
4. a kind of vehicle mounted fault diagnosis device according to claim 1 and 2, it is characterized in that, be distributed with a plurality of sensors and actuating unit in the described automobile ECU, the automobile ECU internal memory contains the failure code of each systems such as engine system, air bag system, automatic gear-box system and anti-lock braking system.
5. a kind of vehicle mounted fault diagnosis device according to claim 1 and 2, it is characterized in that, described automobile GPS navigation equipment comprises microprocessor, LCD, memory and auxiliary circuit, is provided with the code translator of automobile ECU failure code in this equipment auxiliary circuit.
6. a kind of vehicle mounted fault diagnosis device according to claim 1 is characterized in that, automatic alarm system is set, the navigator external buzzer on the described automobile GPS navigation equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710029761XA CN101110132B (en) | 2007-08-17 | 2007-08-17 | Vehicle mounted fault diagnosis device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710029761XA CN101110132B (en) | 2007-08-17 | 2007-08-17 | Vehicle mounted fault diagnosis device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101110132A true CN101110132A (en) | 2008-01-23 |
| CN101110132B CN101110132B (en) | 2011-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710029761XA Expired - Fee Related CN101110132B (en) | 2007-08-17 | 2007-08-17 | Vehicle mounted fault diagnosis device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515682A (en) * | 2013-09-27 | 2015-04-15 | 贵州詹阳动力重工有限公司 | Electrically controlled engine fault code reading method and device |
| CN104516347A (en) * | 2013-10-03 | 2015-04-15 | 通用汽车环球科技运作有限责任公司 | Vehicle location and fault diagnostic systems and methods |
| CN110045712A (en) * | 2019-03-06 | 2019-07-23 | 吉利汽车研究院（宁波）有限公司 | A kind of controller failure processing method, device and terminal |
| CN112363488A (en) * | 2020-12-07 | 2021-02-12 | 东风柳州汽车有限公司 | Vehicle fault processing system and method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2880555Y (en) * | 2006-01-07 | 2007-03-21 | 魏基洋 | Tyre air pressure temp. intelligent monitoring system with driving recording function |
| CN2916744Y (en) * | 2006-03-01 | 2007-06-27 | 上海燃料电池汽车动力系统有限公司 | Onboard network and remote wireless communication-based onboard device |
-
2007
- 2007-08-17 CN CN200710029761XA patent/CN101110132B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104515682A (en) * | 2013-09-27 | 2015-04-15 | 贵州詹阳动力重工有限公司 | Electrically controlled engine fault code reading method and device |
| CN104516347A (en) * | 2013-10-03 | 2015-04-15 | 通用汽车环球科技运作有限责任公司 | Vehicle location and fault diagnostic systems and methods |
| CN110045712A (en) * | 2019-03-06 | 2019-07-23 | 吉利汽车研究院（宁波）有限公司 | A kind of controller failure processing method, device and terminal |
| CN112363488A (en) * | 2020-12-07 | 2021-02-12 | 东风柳州汽车有限公司 | Vehicle fault processing system and method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101110132B (en) | 2011-11-23 |
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Assignee: Jiangxi Good Helper Electronic Technology Co., Ltd. Assignor: Coagent Electronic S & T Co., Ltd. Contract record no.: 2012440000011 Denomination of invention: Vehicle mounted fault diagnosis device Granted publication date: 20111123 License type: Exclusive License Open date: 20080123 Record date: 20120117 |
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