CN105675304A - Automobile engine on-line monitoring system - Google Patents
Automobile engine on-line monitoring system Download PDFInfo
- Publication number
- CN105675304A CN105675304A CN201610005650.4A CN201610005650A CN105675304A CN 105675304 A CN105675304 A CN 105675304A CN 201610005650 A CN201610005650 A CN 201610005650A CN 105675304 A CN105675304 A CN 105675304A
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- module
- automobile engine
- automobile
- line monitoring
- monitoring system
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/10—Testing internal-combustion engines by monitoring exhaust gases or combustion flame
- G01M15/102—Testing internal-combustion engines by monitoring exhaust gases or combustion flame by monitoring exhaust gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
Abstract
The application discloses an automobile engine on-line monitoring system. The system comprises: a data acquisition module, a data processing module, an exhaust fluctuation signal database, a mode recognition module, an analog digital converter, a control module, a circular linked list, a memory module, and a diagnosis module. According to the application, the bus technique is interconnected with engine integrated controller and other automobile electronic control systems to form a unit of an automobile internal network; the system can act as a powerful tool for optimizing control of engines; the system can be also applied to engines of other types and in different application occasions by software transportation; the system interface type can be set according to requirements so that the system has stronger versatility. The system has long-term application prospect in failure diagnosis and optimizing control of internal combustion engines, and in noise control for automobile engines.
Description
Technical field
The application belongs to automobile monitoring field, specifically, relates to a kind of automobile engine on-line monitoring system.
Background technology
Automobile engine is sufficiently complex mechanical, electrical, a liquid system, it is made up of two great institutions (toggle, valve actuating mechanism) and five big systems (fuel supply system, cooling system, lube system, igniting system, startup system), its fault is also of a great variety, relation between phenomenon of the failure and reason is also numerous and complicated, it may be possible to the relation of one-to-many, many-one or multi-to-multi. Different faults shows in a different manner, therefore, selects which type of detection object, detects which parameter, and how to carry out that signal analysis processes with data be the subject matter to solve of condition monitoring and fault diagnosis.
Traditional engine performance detection is the duty to each system of electromotor, static state and dynamic parameter such as igniting, oil spout, electric-control system and sensing element and air inlet system and exhaust system and machine work state etc. are analyzed, and judge for engine condition and fault diagnosis provides scientific basis.
Along with popularizing of automobile, the development of automotive electronic technology, utilizing the duty that automobile engine monitored in real time by electronic equipment is an inexorable trend. Because the quality of automobile engine working condition is directly connected to the efficiency of electromotor and the pollution level problem of aerofluxus; And the operating mode before monitoring engine breakdown in time is safeguarded by the reasonable maintaining of electromotor or even vehicle safety travel has important meaning.
Summary of the invention
In view of this, technical problems to be solved in this application are existing test point and the too much problem of monitoring variable.
In order to solve above-mentioned technical problem, this application discloses a kind of automobile engine on-line monitoring system, including:
Data acquisition module, including for electromotor in the course of the work gather aerofluxus fluctuation signal sensor;
Data processing module, is connected with described data acquisition module, described data acquisition module is exported signal and processes, and separates or extract characteristic quantity as characteristic parameter or critical parameter;
Aerofluxus fluctuation signal data base, is connected with described data processing module, including the electromotor critical parameter at the aerofluxus fluctuation signal of normal condition;
Pattern recognition module, is connected with the signal output part of described aerofluxus fluctuation signal data base and described data processing module respectively, by the described critical parameter of relatively described characteristic parameter and described aerofluxus fluctuation signal data base, draws result of determination;
Analog to digital converter, is connected with described pattern recognition module;
Control module, be connected with described analog to digital converter and described pattern recognition module respectively, by the supply voltage of a described analog to digital converter automobile of reading per second; Control to coordinate whole system work, and be responsible for exporting described result of determination;
Circular linked list, is connected with described control module, according to the order of time, stores described supply voltage;
Memory module, is connected with described circular linked list, calculates and record ignition voltage and the extinction voltage of automobile engine;
Diagnostic module, is connected with described memory module, utilizes the ignition voltage of described automobile engine, extinction voltage and current supply voltage, the state of current automobile engine is judged, and provides described supply voltage.
Further, described pattern recognition module also includes fault detection module, in corresponding described aerofluxus fluctuation signal data base, also includes the electromotor critical parameter at the aerofluxus fluctuation signal of different faults state; Described fault detection module is used for judging breakdown in the motor type.
Further, the outfan of described pattern recognition module is further connected with the memory module for storing the aerofluxus fluctuation signal data that cannot detect fault type.
Further, described sensor is pressure transducer.
Further, described sensor is positioned at the inner side of automobile exhaust pipeline.
Further, described sensor is arranged at the middle part inside automobile exhaust pipeline or the end inside discharge duct, and the inner side of this discharge duct is provided with noise reducer, before or after described pressure transducer is positioned at noise reducer.
Further, the signal of described pressure transducer collection is exhaust pressure wave.
Further, the outfan of described control module is further connected with alarm module and expands interface.
Further, described expansion interface includes making system be connected with automotive interior control system man-machine interface and/or the EBI with remote diagnostic center communication.
Compared with prior art, the application can obtain and include techniques below effect:
1) system is by other Auto Electronic Controlled System interconnection such as bussing technique and car-engine integrated control devices, becomes a unit of automotive interior net;
2) system acts not only as the powerful that engine optimization controls, and could be applicable to by software transplanting, for other type of electromotor and different application occasion;
3) system interface type can be arranged by demand, so that the versatility of system is higher, has long-range application prospect in the noise control of the fault diagnosis of internal combustion engine, optimal control and automobile engine.
4) the accurate accuracy judged, decreases the cost of design and use simultaneously; It addition, it does not need the support of automobile vendor or manufacturer's vehicle, thus meeting the versatility of the described engine state monitor method based on automotive voltage.
Certainly, the arbitrary product implementing the application must be not necessarily required to reach all the above technique effect simultaneously.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing further understanding of the present application, constitutes the part of the application, and the schematic description and description of the application is used for explaining the application, is not intended that the improper restriction to the application. In the accompanying drawings:
Fig. 1 is the schematic diagram of the automobile engine on-line monitoring system of the embodiment of the present application.
Detailed description of the invention
Describe presently filed embodiment in detail below in conjunction with drawings and Examples, thereby the application how application technology means are solved technical problem and reaches the process that realizes of technology effect and can fully understand and implement according to this.
This application discloses a kind of automobile engine on-line monitoring system, as it is shown in figure 1, include:
Data acquisition module 100: include for electromotor in the course of the work gather aerofluxus fluctuation signal sensor 110;
Data processing module 200: be connected with described data acquisition module 100, exports signal to described data acquisition module 100 and processes, and separates or extract characteristic quantity as characteristic parameter or critical parameter;
Aerofluxus fluctuation signal data base 300: be connected with described data processing module 200, including the electromotor critical parameter at the aerofluxus fluctuation signal of normal condition;
Pattern recognition module 400: be connected with the signal output part of aerofluxus fluctuation signal data base 300 and data processing module 200 respectively, by the critical parameter of comparative feature parameter and aerofluxus fluctuation signal data base, draws result of determination;
Analog to digital converter 500: be connected with described pattern recognition module 400;
Control module 600: be connected with described analog to digital converter 500 and pattern recognition module 400 respectively, by the supply voltage of described analog to digital converter 400 automobile of reading per second; Control to coordinate whole system work, and be responsible for output result of determination;
Circular linked list 700: be connected with described control module 600, according to the order of time, stores described supply voltage;
Memory module 800: be connected with described circular linked list 700, calculates and records ignition voltage and the extinction voltage of automobile engine;
Diagnostic module 900: be connected with described memory module 800, utilizes the ignition voltage of automobile engine, extinction voltage and current supply voltage, the state of current automobile engine is judged, and provides described supply voltage.
In the present embodiment, described pattern recognition module 400 also includes fault detection module 410, in corresponding aerofluxus fluctuation signal data base 300, also includes the electromotor critical parameter at the aerofluxus fluctuation signal of different faults state; Fault detection module is used for judging breakdown in the motor type. The outfan of described pattern recognition module 400 is further connected with the memory module 420 for storing the aerofluxus fluctuation signal data that cannot detect fault type.
In the present embodiment, described sensor 110 is pressure transducer; Described sensor 110 is positioned at the inner side of automobile exhaust pipeline; Described sensor 110 is arranged at the middle part inside automobile exhaust pipeline or the end inside discharge duct, and the inner side of this discharge duct is provided with noise reducer, before or after pressure transducer is positioned at noise reducer; The signal of described pressure transducer collection is exhaust pressure wave.
It is furthermore preferred that the outfan of described control module 600 is further connected with alarm module 610 and expands interface 620; Man-machine interface that described expansion interface 620 includes making system be connected with automotive interior control system and/or the EBI with remote diagnostic center communication.
When specifically applying, described pressure transducer gathers the exhaust pressure wave of electromotor normal condition and the exhaust pressure wave of each cylinder misfire malfunction respectively, is used for setting up described pressure at expulsion fluctuation frequency spectrum storehouse. When the engine is running, described pressure transducer gathers electromotor exhaust pressure wave in running, first, exhaust pressure wave is sent in described data acquisition module 100 and carries out signal processing, the initial pressure signal of telecommunication that described pressure transducer is collected its be converted into the easy-to-handle signal of telecommunication and export in described data processing module. Secondly, signal carries out spectrum component process in described data processing module 200, after being converted by signal and sampled, extracts characteristic quantity as characteristic parameter, sends into described pattern recognition module 400 and described fault detection module 410. Again, the critical parameter of the normal condition in frequency spectrum storehouse that fluctuated by comparative feature parameter and described aerofluxus surge pressure, described pattern recognition module 400 finds that characteristic parameter and critical parameter do not correspond, therefore, it is determined that electromotor exists fault. Now start complex patterns identification process, namely the exhaust pressure wave collected in running is carried out further signal spectrum and become divisional processing, extract malfunction characteristic parameter. Then, in described fault detection module 410, malfunction characteristic parameter is compared one by one with the characteristic parameter of each cylinder misfire malfunction in described pressure at expulsion fluctuation frequency spectrum storehouse, find that malfunction characteristic parameter is consistent with 3# cylinder misfire fault, now judge that engine cylinder exists misfire fault. Finally, result of determination is exported in described control module 600, the alarm device that the outfan of described control module 600 is connected to sends warning, and by the man-machine interface being connected to the outfan of engine control module 600 and the control system of automotive interior, controls parking of automobile.
Due to different automobile current generators with battery tension is variant and in running car, electromotor provides electric current and actually used curent change, the method of simple judgment threshold can not judge engine condition, so by described memory module 800, adopt Memory algorithm, utilize voltage jump when the most obvious also the most regular igniting in change in voltage, record prefiring voltage and later voltage of lighting a fire, it is used for determining next time flame-out voltage, it is described more accurate based on the engine state monitor method of automotive voltage to make with this, versatility is higher.
Described utilizing the ignition voltage of automobile engine, extinction voltage and current supply voltage, the concrete steps that the state of current automobile engine is judged include: current supply voltage and described extinction voltage are compared; If current supply voltage less than described extinction voltage plus described igniting time voltage difference 25 percent, and 25 percent of voltage difference when 20 supply voltages are both less than described extinction voltage plus described igniting afterwards, then judge that current time is as engine misses state; If being unsatisfactory for the condition of flameout state, namely it is judged as that electromotor is in fired state.
A kind of automobile engine on-line monitoring system that the application provides, by other Auto Electronic Controlled System interconnection such as bussing technique and car-engine integrated control devices, becomes a unit of automotive interior net; System acts not only as the powerful that engine optimization controls, and also can fit by software transplanting, for other type of electromotor and different application occasion; System interface type can be arranged by demand, so that the versatility of system is higher, has long-range application prospect in the noise control of the fault diagnosis of internal combustion engine, optimal control and automobile engine; The accurately accuracy that judges, decreases the cost of design and use simultaneously; It addition, it does not need the support of automobile vendor or manufacturer's vehicle, thus meeting the versatility of the described engine state monitor method based on automotive voltage.
It can further be stated that, term " includes ", " comprising " or its any other variant are intended to comprising of nonexcludability, so that include the commodity of a series of key element or system not only includes those key elements, but also include other key elements being not expressly set out, or also include the key element intrinsic for this commodity or system. When there is no more restriction, statement " including ... " key element limited, it is not excluded that there is also other identical element in the commodity including described key element or system.
Described above illustrate and describes some preferred embodiments of the application, but as previously mentioned, it is to be understood that the application is not limited to form disclosed herein, it is not to be taken as the eliminating to other embodiments, and can be used for other combinations various, amendment and environment, and in application contemplated scope described herein, can be modified by the technology of above-mentioned instruction or association area or knowledge. And the change that those skilled in the art carry out and change are without departing from spirit and scope, then all should in the protection domain of the application claims.
Claims (9)
1. an automobile engine on-line monitoring system, it is characterised in that including:
Data acquisition module, including for electromotor in the course of the work gather aerofluxus fluctuation signal sensor;
Data processing module, is connected with described data acquisition module, described data acquisition module is exported signal and processes, and separates or extract characteristic quantity as characteristic parameter or critical parameter;
Aerofluxus fluctuation signal data base, is connected with described data processing module, including the electromotor critical parameter at the aerofluxus fluctuation signal of normal condition;
Pattern recognition module, is connected with the signal output part of described aerofluxus fluctuation signal data base and described data processing module respectively, by the described critical parameter of relatively described characteristic parameter and described aerofluxus fluctuation signal data base, draws result of determination;
Analog to digital converter, is connected with described pattern recognition module;
Control module, be connected with described analog to digital converter and described pattern recognition module respectively, by the supply voltage of a described analog to digital converter automobile of reading per second; Control to coordinate whole system work, and be responsible for exporting described result of determination;
Circular linked list, is connected with described control module, according to the order of time, stores described supply voltage;
Memory module, is connected with described circular linked list, calculates and record ignition voltage and the extinction voltage of automobile engine;
Diagnostic module, is connected with described memory module, utilizes the ignition voltage of described automobile engine, extinction voltage and current supply voltage, the state of current automobile engine is judged, and provides described supply voltage.
2. automobile engine on-line monitoring system as claimed in claim 1, it is characterized in that, described pattern recognition module also includes fault detection module, in corresponding described aerofluxus fluctuation signal data base, also includes the electromotor critical parameter at the aerofluxus fluctuation signal of different faults state; Described fault detection module is used for judging breakdown in the motor type.
3. automobile engine on-line monitoring system as claimed in claim 2, it is characterised in that the outfan of described pattern recognition module is further connected with the memory module for storing the aerofluxus fluctuation signal data that cannot detect fault type.
4. automobile engine on-line monitoring system as claimed in claim 3, it is characterised in that described sensor is pressure transducer.
5. automobile engine on-line monitoring system as claimed in claim 4, it is characterised in that described sensor is positioned at the inner side of automobile exhaust pipeline.
6. automobile engine on-line monitoring system as claimed in claim 5, it is characterized in that, described sensor is arranged at the middle part inside automobile exhaust pipeline or the end inside discharge duct, and the inner side of this discharge duct is provided with noise reducer, before or after described pressure transducer is positioned at noise reducer.
7. automobile engine on-line monitoring system as claimed in claim 6, it is characterised in that the signal of described pressure transducer collection is exhaust pressure wave.
8. automobile engine on-line monitoring system as claimed in claim 7, it is characterised in that the outfan of described control module is further connected with alarm module and expands interface.
9. automobile engine on-line monitoring system as claimed in claim 8, it is characterised in that man-machine interface that described expansion interface includes making system be connected with automotive interior control system and/or the EBI with remote diagnostic center communication.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610005650.4A CN105675304A (en) | 2016-01-04 | 2016-01-04 | Automobile engine on-line monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610005650.4A CN105675304A (en) | 2016-01-04 | 2016-01-04 | Automobile engine on-line monitoring system |
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| CN105675304A true CN105675304A (en) | 2016-06-15 |
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Cited By (5)
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| CN108303262A (en) * | 2018-01-19 | 2018-07-20 | 南京世界村汽车动力有限公司 | A kind of automobile engine on-line monitoring and fault diagnosis system |
| CN111324057A (en) * | 2019-12-03 | 2020-06-23 | 中国人民解放军陆军装甲兵学院士官学校 | Monitoring system and monitoring method based on digital monitoring of heavy vehicle engine |
| CN111740888A (en) * | 2020-05-14 | 2020-10-02 | 深圳市元征科技股份有限公司 | Ignition signal synchronization method and related equipment |
| CN113375949A (en) * | 2021-07-22 | 2021-09-10 | 深圳丰汇汽车电子有限公司 | Automobile fault diagnosis assembly |
| CN113779328A (en) * | 2021-08-11 | 2021-12-10 | 邹平市供电有限公司 | Power supply monitoring data integration processing method, system, terminal and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113779328A (en) * | 2021-08-11 | 2021-12-10 | 邹平市供电有限公司 | Power supply monitoring data integration processing method, system, terminal and storage medium |
| CN113779328B (en) * | 2021-08-11 | 2023-10-31 | 邹平市供电有限公司 | Power supply monitoring data integration processing method, system, terminal and storage medium |
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