CN111025938A - Embedded vehicle fault diagnosis system - Google Patents
Embedded vehicle fault diagnosis system Download PDFInfo
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- CN111025938A CN111025938A CN201911164297.4A CN201911164297A CN111025938A CN 111025938 A CN111025938 A CN 111025938A CN 201911164297 A CN201911164297 A CN 201911164297A CN 111025938 A CN111025938 A CN 111025938A
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- electric spark
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- 238000003745 diagnosis Methods 0.000 title claims abstract description 42
- 238000010892 electric spark Methods 0.000 claims abstract description 23
- 238000001514 detection method Methods 0.000 claims abstract description 17
- 230000003993 interaction Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims description 27
- 238000004458 analytical method Methods 0.000 claims description 8
- 239000000523 sample Substances 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 5
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000002950 deficient Effects 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 238000009434 installation Methods 0.000 abstract 1
- 238000004092 self-diagnosis Methods 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000008439 repair process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000840 electrochemical analysis Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000001745 non-dispersive infrared spectroscopy Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
Abstract
The invention belongs to the technical field of vehicle fault diagnosis, and particularly relates to an embedded vehicle fault diagnosis system which comprises a human-computer interaction terminal, a controller, a signal transmitter and a detection instrument, wherein the human-computer interaction terminal is connected with the controller, the controller is connected with the signal transmitter, the signal transmitter is connected with the detection instrument, the detection instrument comprises an unloaded dynamometer, a diagnosis analyzer, a tail gas detector, an electric spark detector, an air cylinder air tightness detector, an air cylinder pressure gauge and an automobile vibration tachometer, and by means of embedded installation of a plurality of vehicle fault detection devices, real-time fault diagnosis of a vehicle is realized, and diagnosis information is output to the human-computer interaction terminal, so that manual operation is reduced, and use and self-diagnosis are facilitated.
Description
Technical Field
The invention relates to the technical field of vehicle fault diagnosis, in particular to an embedded vehicle fault diagnosis system.
Background
When diagnosing a vehicle fault, diagnostic parameters are often used to characterize the technical state of the vehicle assembly and structure, such as operating process parameters of the vehicle and state parameters of the associated operating process. These parameters are physical quantities (such as vibrations, noise, temperature, vacuum, power, cylinder compression pressure, etc.) and chemical quantities (such as exhaust gas components, lubricating oil impurity components, etc.). These diagnostic parameters can vary in correspondence with the changing technical conditions of the vehicle and are highly reliable, sensitive and implementable. In order to quantitatively evaluate these parameters, it is necessary to establish diagnostic parameter standards such as national standards for automobile driving safety and emissions, manufacturer's recommended standards relating to technical conditions, and local and enterprise standards suitable for various regions and use conditions.
The basic methods for diagnosing the automobile fault include two methods: one is manual diagnostics, and the other is instrumental diagnostics. The manual diagnosis is mainly based on practical experience and knowledge of diagnosticians, and by means of simple tools, by means of sense means such as eye observation, ear listening, hand modeling and the like, the technical conditions of the automobile are judged while examination, test and analysis are carried out. The method is simple, convenient and intuitive, and is also the basis for establishing a knowledge base of a modern fault diagnosis expert system. The instrument and equipment diagnosis method is to use universal or special instrument and equipment to detect automobile assembly and mechanism and provide quantitative basis for analyzing automobile technological state and judging fault. Some instruments and equipment adopting a computer to control or configure a fault diagnosis expert system can automatically complete the testing, analysis, judgment and processing decision of the technical condition diagnosis parameters of the automobile. The instrument and equipment diagnosis method is objective, quantitative and fast in detection speed, and the development and application of the automobile diagnosis technology are promoted. In the diagnosis practice, the two methods are often combined for use, firstly, a diagnostician inquires about the fault condition of a driver, visually inspects the vehicle, preliminarily judges the fault according to experience, and then further screens and identifies by using a diagnostic instrument and equipment to finally confirm the fault.
The existing large-scale fault diagnosis system is an external instrument and is not provided with a device embedded in a vehicle, so that when a large vehicle fault occurs, the vehicle needs to be moved to a professional detection point for detection, the repair time of the vehicle is too long, and the use is not facilitated.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
The present invention has been made in view of the above and/or other problems occurring in the conventional vehicle fault diagnosis system.
Therefore, an object of the present invention is to provide an embedded vehicle fault diagnosis system, which can be embedded in a vehicle to perform real-time diagnosis of vehicle parts, reduce the number of times of point detection diagnosis, and is convenient to use.
To solve the above technical problem, according to an aspect of the present invention, the present invention provides the following technical solutions:
the utility model provides an embedded vehicle failure diagnosis system, includes human-computer interaction terminal, controller, signal transmitter and detecting instrument, the human-computer interaction terminal is connected with the controller, the controller is connected with signal transmitter, signal transmitter is connected with detecting instrument, detecting instrument includes no load dynamometer, diagnostic analysis appearance, tail gas detector, electric spark detector, cylinder gas tightness detector, cylinder pressure gauge and car vibrations tachometer.
As a preferable aspect of the embedded vehicle fault diagnosis system according to the present invention, wherein: the no-load dynamometer is installed at the power output end of an automobile engine.
As a preferable aspect of the embedded vehicle fault diagnosis system according to the present invention, wherein: the tail gas analyzer is arranged at an exhaust port of an automobile, and the testing principle of the tail gas analyzer is a non-light-splitting infrared ray analysis principle.
As a preferable aspect of the embedded vehicle fault diagnosis system according to the present invention, wherein: the automobile vibration tachometer is arranged on an engine, and the operation method of the automobile vibration tachometer comprises the following steps:
the method comprises the following steps: mounting the automobile vibration tachometer outside the engine;
step two: connecting the power clamp with an external power supply, and connecting the signal wire with the controller;
step three: selecting the number of cylinders and the number of strokes of the engine through a controller;
step four: starting the engine, and controlling the measurement of the automobile vibration tachometer by the controller;
step five: and the measured data is output to the man-machine interaction terminal through the signal transmitter.
As a preferable aspect of the embedded vehicle fault diagnosis system according to the present invention, wherein: the cylinder pressure gauge is arranged at the position of a spark plug of a cylinder, and the using method of the cylinder pressure gauge comprises the following steps:
the method comprises the following steps: starting the engine and operating to a normal working temperature;
step two: the controller controls the crankshaft to rotate for 3-5s, so that the engine is kept at 150-;
step three: the air cylinder pressure gauge outputs the detection information to the controller, and the controller outputs the received air cylinder compression pressure to the man-machine interaction terminal.
As a preferable aspect of the embedded vehicle fault diagnosis system according to the present invention, wherein: the electric spark detector is arranged on the metal base material, and the using method of the electric spark detector comprises the following steps:
the method comprises the following steps: the electric spark detector is connected with the controller;
step two: the controller controls the electric spark detector to start, and a probe on the electric spark detector sends out high-voltage direct current;
step three: when the probe passes through the defective coating surface, the electric spark detector gives an alarm and outputs a signal to the controller.
Compared with the prior art: the existing large-scale fault diagnosis system is an external instrument and is not provided with a device embedded in a vehicle, when a large vehicle fault occurs, the vehicle needs to be moved to a professional detection point for detection, the vehicle repair time is too long, and the vehicle fault diagnosis system is not beneficial to use.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise. Wherein:
fig. 1 is a schematic system structure diagram of an embedded vehicle fault diagnosis system according to the present invention.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The invention provides an embedded vehicle fault diagnosis system, please refer to fig. 1, which comprises a human-computer interaction terminal, a controller, a signal emitter and a detection instrument, wherein the human-computer interaction terminal is connected with the controller, the controller is connected with the signal emitter, the signal emitter is connected with the detection instrument, and the detection instrument comprises an unloaded dynamometer, a diagnosis analyzer, a tail gas detector, an electric spark detector, an air cylinder air tightness detector, an air cylinder pressure gauge and an automobile vibration tachometer.
Referring to fig. 1 again, the no-load dynamometer is installed at the power output end of an automobile engine, and specifically, the no-load dynamometer is used for measuring the power of the engine, when the no-load dynamometer is used, the engine is heated to a normal temperature, then the engine is extinguished, the no-load dynamometer is connected with a power supply and preheated, the no-load dynamometer is checked and adjusted to be normal, a clip of a rotating speed sensor is connected with an ignition coil of a distributor in parallel, an ignition switch is turned on, after all measuring instruments are ready, an engine accelerator is stepped to the bottom, an indicator lamp on the no-load dynamometer is sequentially flashed, the engine is automatically extinguished, the maximum power of the engine generated at the moment is repeatedly tested for 2-5 times according to the same method, and an.
Referring to fig. 1 again, the exhaust gas analyzer is installed at the exhaust port of the automobile, and the testing principle of the exhaust gas analyzer is a non-spectroscopic infrared analysis principle, specifically, the analysis method is that gas molecules composed of multiple atoms absorb infrared light energy in a certain specific wavelength range in direct proportion to the gas concentration, so as to work, and the infrared light energy is used for measuring the concentrations of HC, CO2 and O2 in the exhaust gas discharged from the gasoline engine of the automobile. The HC, CO and CO2 are detected by advanced NDIR non-spectroscopic infrared analysis technology, and the O2 is detected by the latest electrochemical analysis technology.
Referring again to fig. 1, the vehicle vibration tachometer is mounted on the engine, and the operation method of the vehicle vibration tachometer is as follows:
the method comprises the following steps: mounting the automobile vibration tachometer outside the engine;
step two: connecting the power clamp with an external power supply, and connecting the signal wire with the controller;
step three: selecting the number of cylinders and the number of strokes of the engine through a controller;
step four: starting the engine, and controlling the measurement of the automobile vibration tachometer by the controller;
step five: and the measured data is output to the man-machine interaction terminal through the signal transmitter.
Referring again to fig. 1, the cylinder pressure gauge is installed at the position of the spark plug of the cylinder, and the cylinder pressure gauge is used as follows:
the method comprises the following steps: starting the engine and operating to a normal working temperature;
step two: the controller controls the crankshaft to rotate for 3-5s, so that the engine is kept at 150-;
step three: the air cylinder pressure gauge outputs the detection information to the controller, and the controller outputs the received air cylinder compression pressure to the man-machine interaction terminal.
Referring to fig. 1 again, the electric spark detector is installed on the metal substrate, and the use method of the electric spark detector is as follows:
the method comprises the following steps: the electric spark detector is connected with the controller;
step two: the controller controls the electric spark detector to start, and a probe on the electric spark detector sends out high-voltage direct current;
step three: when the probe passes through the defective coating surface, the electric spark detector gives an alarm and outputs a signal to the controller.
In the specific use process, the diagnosis information generated by the no-load dynamometer, the diagnosis analyzer, the tail gas detector, the electric spark detector, the cylinder air tightness detector, the cylinder pressure gauge and the automobile vibration tachometer is output to the controller through the signal transmitter, and the controller outputs the electric signal to the man-machine interaction terminal, so that the purpose of checking fault diagnosis in real time is realized.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (6)
1. An embedded vehicle fault diagnosis system, characterized by: including human-computer interaction terminal, controller, signal transmitter and detecting instrument, the human-computer interaction terminal is connected with the controller, the controller is connected with signal transmitter, signal transmitter is connected with detecting instrument, detecting instrument includes no load dynamometer, diagnostic analyzer, tail gas detection appearance, electric spark detector, cylinder gas tightness detector, cylinder pressure gauge and car vibrations tachometer.
2. The embedded vehicle fault diagnosis system according to claim 1, characterized in that: the no-load dynamometer is installed at the power output end of an automobile engine.
3. The embedded vehicle fault diagnosis system according to claim 1, characterized in that: the tail gas analyzer is arranged at an exhaust port of an automobile, and the testing principle of the tail gas analyzer is a non-light-splitting infrared ray analysis principle.
4. The embedded vehicle fault diagnosis system according to claim 1, characterized in that: the automobile vibration tachometer is arranged on an engine, and the operation method of the automobile vibration tachometer comprises the following steps:
the method comprises the following steps: mounting the automobile vibration tachometer outside the engine;
step two: connecting the power clamp with an external power supply, and connecting the signal wire with the controller;
step three: selecting the number of cylinders and the number of strokes of the engine through a controller;
step four: starting the engine, and controlling the measurement of the automobile vibration tachometer by the controller;
step five: and the measured data is output to the man-machine interaction terminal through the signal transmitter.
5. The embedded vehicle fault diagnosis system according to claim 1, characterized in that: the cylinder pressure gauge is arranged at the position of a spark plug of a cylinder, and the using method of the cylinder pressure gauge comprises the following steps:
the method comprises the following steps: starting the engine and operating to a normal working temperature;
step two: the controller controls the crankshaft to rotate for 3-5s, so that the engine is kept at 150-;
step three: the air cylinder pressure gauge outputs the detection information to the controller, and the controller outputs the received air cylinder compression pressure to the man-machine interaction terminal.
6. The embedded vehicle fault diagnosis system according to claim 1, characterized in that: the electric spark detector is arranged on the metal base material, and the using method of the electric spark detector comprises the following steps:
the method comprises the following steps: the electric spark detector is connected with the controller;
step two: the controller controls the electric spark detector to start, and a probe on the electric spark detector sends out high-voltage direct current;
step three: when the probe passes through the defective coating surface, the electric spark detector gives an alarm and outputs a signal to the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164297.4A CN111025938A (en) | 2019-11-25 | 2019-11-25 | Embedded vehicle fault diagnosis system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911164297.4A CN111025938A (en) | 2019-11-25 | 2019-11-25 | Embedded vehicle fault diagnosis system |
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| CN111025938A true CN111025938A (en) | 2020-04-17 |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101135276A (en) * | 2006-08-31 | 2008-03-05 | 本田技研工业株式会社 | In-cylinder pressure detection device and method for internal combustion engine |
| CN101286067A (en) * | 2008-05-22 | 2008-10-15 | 杨思念 | Vehicle mounted type automobile fault diagnostic apparatus |
| CN202472410U (en) * | 2011-12-27 | 2012-10-03 | 厦门雅迅网络股份有限公司 | Automobile OBD fault diagnostic device based on wireless technology |
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| CN204374225U (en) * | 2015-01-20 | 2015-06-03 | 上海艾梦电子科技有限公司 | A kind of vibration tachometer |
| CN206974957U (en) * | 2017-07-27 | 2018-02-06 | 济宁鲁科检测器材有限公司 | Electric spark detector |
| CN208953953U (en) * | 2018-09-20 | 2019-06-07 | 山西成功汽车制造有限公司 | A kind of integrated automobile trouble-shooter |
| CN109976315A (en) * | 2019-04-25 | 2019-07-05 | 琼台师范学院 | A kind of embedded vehicle fault diagnosis system |
-
2019
- 2019-11-25 CN CN201911164297.4A patent/CN111025938A/en active Pending
Patent Citations (8)
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|---|---|---|---|---|
| CN101135276A (en) * | 2006-08-31 | 2008-03-05 | 本田技研工业株式会社 | In-cylinder pressure detection device and method for internal combustion engine |
| CN101286067A (en) * | 2008-05-22 | 2008-10-15 | 杨思念 | Vehicle mounted type automobile fault diagnostic apparatus |
| CN202472410U (en) * | 2011-12-27 | 2012-10-03 | 厦门雅迅网络股份有限公司 | Automobile OBD fault diagnostic device based on wireless technology |
| CN202853908U (en) * | 2012-11-15 | 2013-04-03 | 惠州市车仆电子科技有限公司 | Vehicle-mounted fault-diagnosing instrument |
| CN204374225U (en) * | 2015-01-20 | 2015-06-03 | 上海艾梦电子科技有限公司 | A kind of vibration tachometer |
| CN206974957U (en) * | 2017-07-27 | 2018-02-06 | 济宁鲁科检测器材有限公司 | Electric spark detector |
| CN208953953U (en) * | 2018-09-20 | 2019-06-07 | 山西成功汽车制造有限公司 | A kind of integrated automobile trouble-shooter |
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| Title |
|---|
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