CN103389727A - Vehicle micro diagnosis device and vehicle diagnosis method - Google Patents
Vehicle micro diagnosis device and vehicle diagnosis method Download PDFInfo
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- CN103389727A CN103389727A CN2013103060866A CN201310306086A CN103389727A CN 103389727 A CN103389727 A CN 103389727A CN 2013103060866 A CN2013103060866 A CN 2013103060866A CN 201310306086 A CN201310306086 A CN 201310306086A CN 103389727 A CN103389727 A CN 103389727A
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Abstract
The invention discloses a vehicle micro diagnosis device which is connected with vehicle general OBD interfaces, so as to communicate with vehicle computers. The vehicle micro diagnosis device comprises a detection module, a monitor module, a storage module and a feedback module, wherein the detection module is used for determining the state of a vehicle according to the detected pressure drop of the vehicle; the monitor module is used for obtaining the vehicle data, which is corresponded with the state of the vehicle, after the detection module determines the state of the vehicle; the storage module is used for analyzing and processing the vehicle data when the vehicle data obtained by the monitor module is sent to the storage module; the feedback module is used for feedback the analyzed and processed vehicle data to the vehicle computer and sending corresponding control command, so as to realize corresponding controlling of vehicle electrical appliance.
Description
Technical field
The present invention relates to field of automobile control; Particularly, the vehicle diagnosis method that relates to the miniature diagnostic device of a kind of automobile and utilize the miniature diagnostic device of this automobile to carry out.
Background technology
Before the sixties in 20th century, the automotive interior gasoline injection system, reach other and control function by means of the mechanical hook-up realization, and complex structure is expensive, multiplex in luxury models and racing car.After the sixties in 20th century, due to the fast development of electronic technology be subjected to the impact of Abgasgesetz, make electronic gasoline injection (EFI) technology and control system obtain further development.Automobile no longer only, by the control of machinery, can be controlled by vehicle interior automobile computer (ECU) automatically, and each electric elements on automobile are all to control computer (ECU) by each different sensor and automobile to be connected.Therefore, whether the state of each components and parts of understanding that automobile computer can be promptly and accurately breaks down, and also can effectively control all parts action on automobile.
automobile computer (ECU) can be stored state and the failure message of all elements of controlling, and vehicle part is controlled promptly and accurately, externally it provides the interface of a standard, it is the OBD diagnose interface, be mainly used in the communication in automotive interior information and the external world, current vehicle maintenance and repair enterprise communicate by letter with automobile computer (ECU) by instrumentation (being automobile decoder) real-time dynamic information that obtains vehicle and the static failure message and process to become through decoding and can allow word and the numeral that the people identifies show of being mainly used in, the specialized maintenance personnel carry out the discriminatory analysis vehicle to the information of reading and whether have fault, there is fault in any parts.Vehicle ECU breaks down while maybe needing to upgrade, and also can use instrumentation (being automobile decoder) to be connected with automobile computer and to realize that ECU again writes with a brush dipped in Chinese ink and upgrades by the OBD interface.
Because current all special inspecting equipments all only are used for maintenance company, strongly professional, narrow application range.Like this, on automobile, the OBD diagnose interface of standard configuration only, for detection of the use of maintenance, does not fully excavate out for its potentiality.
Fig. 1 shows of the prior art and the diagnose connector schematic diagram vehicle harness link.As shown in Figure 1, the OBD diagnose interface is a universal international standard interface, and current all new productions vehicle (gasoline car, diesel oil heavy goods vehicles) has out all become standard configuration, and the shape size size is all identical, amount to 16 stitch, wherein 16 stitch are defined as follows:
PIN 1---SAE J2411, GM single wire CAN; Single line CAN-the BUS of General Corporation
PIN 2---ISO11519 (Bus+) (SAE J1850), and No. 10 pin use simultaneously, 41.6Kbps PWM width modulation
PIN 3---Chrysler, CCD+ (not OBD); Chrysler makes CCD-BUS netting twine H line;
PIN 4---ground, chassis Chassis ground
PIN 5---Signal ground logically
PIN 6---ISO15765-4; CAN-BUS high speed diagnostics lines (H line), 250/500Kbit/s
PIN 7---KWP1281 or KWP2000 Protocol diagnostic line (K line), baud rate 10400
PIN 8---and ignition switch has been opened electric IG+; Ignition switch ON/OFF state recognition purposes;
PIN 9---when No. 7 pin are inconvenient, enable * KWP1281 or KWP2000 Protocol diagnostic line (K line) baud rate is 10400
PIN 10---ISO11519-4 (Bus-) (SAE J1850), and No. 2 pin use simultaneously, 41.6Kbps PWM width modulation
PIN 11---Chrysler, CCD-(not OBD); Chrysler CCD-BUS netting twine L line
PIN 12---and K line manufacturing plant keeps use
PIN 13---and K line manufacturing plant keeps use
PIN 14---ISO15765-4; CAN-BUS high speed diagnostics lines (L line), 250/500kbps/s
PIN 15---enables when the not enough or control module of KWP1281 or KWP2000 Protocol diagnostic line (K line) 7PIN is too much.
For standard OBD interface, diagnostic equipment enterprise (demoder producer) all must follow international diagnostic criteria just can set up communication with automobile, makes various general or special purpose maintenance devices, uses while being mainly used in the repairing of maintenance company.
, along with the fast development of automotive engineering and improving constantly of people's awareness of safety, by the vehicle diagnosis seat, can excavate the new application that much is conducive to traffic safety.Fully the vehicle diagnosis technology specialty is turned to civil nature, allow diagnostic techniques can better be car owner's service.
Vehicle safety is the topic of being concerned about most for each car owner, and still, for ordinary populace, the vehicle of purchase is the home-use car in 100,000 left and right mostly, like this, for the function that automatically latches that just has in some luxury cars, can't realize on common vehicle.And these functions, for the vehicle of having bought, auto vendor can't carry out upgrading to vehicle again, realizes such function.
For a lot of car owners, functional requirement to this piece is very urgent, all wish to dispose such function on oneself car, because this function is extremely important for the safety of vehicle, such as vehicle is when waiting red light, if the car non-locking door, the stranger just can arbitrarily pull open car door the article in vehicle are plundered, thereby property and personal safety are caused damage.
Along with the fast development of automotive electronic technology, electronic gasoline injection (EFI) technology and control system have been obtained at present.Automobile is the control of machinery no longer just, can automatically be controlled by vehicle interior automobile computer (ECU), and each electric elements on automobile, all control computer (ECU) by each different sensor and automobile and be connected.Automobile computer can be promptly and accurately the state of each components and parts of understanding, also can effectively control the action of all parts on automobile.Standard OBD interface is unique interface of automobile computer foreign exchanges, by the OBD interface, can monitor or control the state of each electronic component of vehicle.
According to the market demand, on the basis of vehicle diagnosis, current design one cover micromodule equipment, only need the simple OBD diagnose interface that inserts the car gage configuration, can monitor the vehicle current state, thereby realize automatically latching, the function of auto-unlocking.
On this basis, need to carry out the micro processing to separate diagnostic instrument (being automobile decoder) now, and on this basis, increase remote control function, just can realize the target of people's car unification.
Summary of the invention
In order to overcome above-mentioned defect, realize the expansion by the plug-in function of OBD interface, the invention provides the miniature diagnostic device of a kind of automobile, the miniature diagnostic device of described automobile is connected with Universal automobile OBD interface, thereby with automobile computer, carry out communication, the miniature diagnostic device of described automobile comprises: detection module, and described detection module is for detection of the pressure drop of automobile and according to the automobile pressure drop that detects, determine vehicle condition; Intercept module, the described module of intercepting is used for intercepting and the corresponding vehicle data of vehicle-state; Memory module, described memory module is carried out analyzing and processing according to described the module described vehicle data that listens to and the vehicle condition of determining of intercepting to described vehicle data; And feedback module, the vehicle data of described feedback module after with analyzing and processing feeds back to automobile computer, so that automobile computer sends corresponding control command, thereby realizes corresponding control to car electrics.
In addition, the miniature diagnostic device of this automobile also comprises remote control module, and described remote control module has communication module, and described communication module will be from the vehicle data transmission after the processing of described memory module to user or server; Preferably, the miniature diagnostic device of described automobile also comprises the first plate and the second plate that is connected by row's pin, described detection module, intercept module, memory module and feedback module and be arranged on described the first plate, described remote control module is arranged on described the second plate; More preferably, the remote control module on described the second plate is connected by described row's pin with the memory module on described the first plate.
Preferably, described memory module comprises analysis module, and described storage module stores has standard information, intercept the vehicle data that module listens to and be sent to memory module by described, and by the standard information with storing in memory module, compare, and by described analysis module, being analyzed, thereby the vehicle data after the acquisition analyzing and processing.
Preferably, described vehicle data comprises at least a in the following information relevant to vehicle: the status information of vehicle electric element, mileage, voltage, oil consumption or the speed of a motor vehicle; Preferably, the status information of described vehicle electric element comprises at least a in the information of following vehicle electric element equipment: headlight, lampet, interior light, car door do not close lifting or the luggage case of warning, vehicle window.
The miniature diagnostic device of automobile of the present invention also comprises for the SIM card socket that inserts SIM card, thereby makes the miniature diagnostic device of described automobile realize long-range SMS alarm service by SIM card.
Preferably, described when intercepting module and intercepting work, intercept the data that module can the real-time sense vehicle; Preferably, when described detection module detects vehicle and is in transport condition, and described when intercepting module and listening to Vehicle Speed and surpass 15km/h, described feedback module can be to the car door operation that automatically latches; When intercepting module and listening to Vehicle Speed and be 0, car door can not opened automatically when described, and when the described module of intercepting listens to the driver and extracts key or driver's side car door opening, described feedback module can be controlled other car door opening.
According to a further aspect in the invention, provide a kind of vehicle diagnosis method, said method comprising the steps of: utilized the miniature diagnostic device of automobile to use general international standard agreement and OBD interface to carry out communication, thereby obtain vehicle data; The miniature diagnostic device of described automobile comprises: detection module, intercept module, memory module and feedback module, the miniature diagnostic device of described automobile has following job step: described detection module detects the pressure drop of automobile and according to the automobile pressure drop that detects, determines vehicle condition; Utilize the described module of intercepting to intercept and the corresponding vehicle data of vehicle-state; To intercept the described vehicle data that module listens to and be sent to described memory module by described, thereby make described memory module carry out analyzing and processing according to the vehicle data that listens to and the vehicle-state determined to described vehicle data; Vehicle data after processing by analysis is sent to described feedback module, and by described feedback module, by Universal automobile OBD interface, feeds back to automobile computer, and automobile computer sends corresponding control command according to the vehicle data of feedback.
In addition, also comprise and utilize remote control module to carry out the telecommunication transmission according to vehicle diagnosis method of the present invention, described remote control module has communication module and antenna, and wherein said communication module is used for needing the data that send pass to the client or upload onto the server; Preferably, the miniature diagnostic device of described automobile comprises for the SIM card socket that inserts SIM card, thereby makes the miniature diagnostic device of described automobile realize long-range SMS alarm service by SIM card.
Preferably, described memory module comprises analysis module, and described storage module stores has standard information, when work, be sent to memory module by described vehicle data of intercepting the module acquisition, and by the standard information with storing in memory module, compare, analyzed by described analysis module, thus the vehicle data after the acquisition analyzing and processing; Preferably, described when intercepting module and intercepting work, intercept the data that module can the real-time sense vehicle.
The miniature diagnostic device of automobile of the present invention is simple in structure, and is easy to use, and function diversification can the Real-time Obtaining various information relevant with vehicle electric element, and can realize long-range data transmission, meets and automatically controls and the demand of Long-distance Control.
Description of drawings
Fig. 1 is the diagnose connector schematic diagram of vehicle harness link of the prior art.
Fig. 2 is the stereographic map according to the miniature diagnostic device of automobile of the embodiment of the present invention.
Fig. 3 A is the face upwarding stereogram according to the first half shells of the miniature diagnostic device of automobile of the embodiment of the present invention.
Fig. 3 B is the top perspective view according to the first half shells of the miniature diagnostic device of automobile of the embodiment of the present invention.
Fig. 3 C is the stereographic map according to the second half shells of the miniature diagnostic device of automobile of the embodiment of the present invention.
Fig. 4 is the fundamental diagram according to the miniature diagnostic device of automobile of the embodiment of the present invention.
Fig. 5 is the schematic diagram that diagnostic device miniature according to the automobile of the embodiment of the present invention is used for obtaining emission information.
Embodiment
Further describe embodiments of the invention below in conjunction with accompanying drawing.
Fig. 2 shows the stereographic map of the miniature diagnostic device of automobile of the embodiment of the present invention.As shown in Figure 2, the physical dimension of the miniature diagnostic device of this automobile size is (the wide * of long * is high): 50mm*33mm*28mm, and due to the relation that the standard diagnostics seat of car is put, the size of the miniature diagnostic device of this automobile meets international standard.If the size of the miniature diagnostic device of this automobile is slightly larger than above-mentioned size, the miniature diagnostic device of this automobile can't normally be inserted in some vehicles.In addition, the 16PIN male of the miniature diagnostic device of automobile is also to carry out molded mould by the international standard size.
As shown in Figure 2, the miniature diagnostic device of this automobile has 16 stitch, corresponding one by one with the standard OBD interface of automobile, exactly this micro device directly is inserted on the vehicle diagnosis seat and gets final product with the connected mode of automobile, it is exactly a miniature automobile computer checkout equipment, can in time understand the running status of vehicle, and according to the present situation of vehicle, some elements of doing automatically vehicle carry out certain operations.
Its power supply mode is directly from power taking on diagnose connector, because this interface is an international standard interface, strict wiring definition is arranged, the #16 pin is the positive pole of automobile power source, the #4 pin is the negative pole of automobile power source, so after this micromodule equipment inserted the vehicle diagnosis seat, vehicle accumulator just can be powered to it automatically, solves its permanent electric problem., from inserting the vehicle diagnosis seat, after self check, can enter the life's work state.
Fig. 3 A-3C shows the stereographic map of the housing of the miniature diagnostic device of automobile in Fig. 2.Wherein Fig. 3 A is the face upwarding stereogram according to the first half shells of the miniature diagnostic device of automobile of the embodiment of the present invention; Fig. 3 B is the top perspective view according to the first half shells of the miniature diagnostic device of automobile of the embodiment of the present invention; Fig. 3 C is the stereographic map according to the second half shells of the miniature diagnostic device of automobile of the embodiment of the present invention.
As shown in Fig. 3 A-3C, the miniature diagnostic device of automobile comprises housing, the first plate and the second plate (not shown).Housing has the first half shells and the second half shells, and the first half shells are provided with row's pin (16 stitch), and an end of row's pin stretches out the first half shells and can be inserted in automobile OBD interface, the second half shells can with described the first half shell dismounting ground combinations.The first plate is accommodated between described upper casing and described lower casing, wherein, is provided with on described the first plate: detection module, and this detection module is determined vehicle condition according to the automobile pressure drop that detects; Intercept module, this is intercepted module and is connected with Universal automobile OBD interface, intercepts module and can intercept and the corresponding vehicle data of vehicle-state; Memory module, memory module is connected with the described module of intercepting, this memory module according to intercept vehicle data that module listens to and definite vehicle condition vehicle data is carried out analyzing and processing; And feedback module, one end of feedback module is connected with memory module, the other end is connected with Universal automobile OBD interface, vehicle data after processing by analysis is sent to feedback module, and by feedback module, by Universal automobile OBD interface, feeding back to automobile computer, automobile computer sends corresponding control command according to the vehicle data of feedback.
Can be with detection module, to intercept module, memory module and feedback module integrated as diagnostic module.
The miniature diagnostic device of this automobile can also comprise the second plate, and this second plate is provided with remote control module, is mainly used in carrying out remote data transmission with user or server.The second plate also is accommodated in described enclosure interior and is arranged on described the first plate top, and the second plate is connected by row's pin with described the first plate.
Particularly, the memory module on the remote control module on the second plate and the first plate can be connected by row's pin, and like this, the vehicle data after the analyzing and processing that can obtain from memory module is sent to remote control module.Remote control module has communication module, and described communication module will be from the vehicle data transmission of described memory module to user or server.
Particularly, communication module comprises GPSR/GSM module, SIM card seat and antenna.Antenna determines power and the stability of the signal of remote control module.Communication module can send to the data (as warning message) that needs send the user or upload onto the server by wireless module (antenna) very first time.Can keep being connected between vehicle and server by communication module, and from diagnostic module, obtaining vehicle data, be uploaded to server, thereby meet the demand of Long-distance Control.
In addition, as shown in Figure 3 C, the sidepiece of the second half shells is provided with the SIM card socket, is provided with sim card socket on the second plate, like this, common SIM card can be inserted on sim card socket by socket, thereby can provide the remote short messages alert service for the user.This SIM card can be any existing SIM card, as long as it possesses the function that can receive and dispatch note.
Certainly, the present invention is not limited to this, and housing can be integrative-structure, and the position relationship of the first plate and the second plate can change, and even diagnostic module and remote control module also can be arranged on identical plate, as long as can realize function separately.
Diagnostic module and remote control module preferably have plate-like form, but the invention is not restricted to this, and they also can have any other shape.Be the first plate and the normal electricity of the second Plate supplying (being permanent power supply (12V)) by automobile storage battery, and can guarantee that this diagnostic module and remote control module are under normal electricity condition, thereby can keep this data to connect always.In addition, it is the same with the network connection of mobile phone that the data of module connect, in case occur that suspension can give network automatically for change.
Fig. 4 shows the fundamental diagram according to the miniature diagnostic device of automobile of the embodiment of the present invention.As shown in Figure 4, automotive interior adopts the network layout pattern of CAN bus, has the different automobile computer of a lot of pieces in automobile, and these automobile computers are interrelated by the form of bus.The miniature diagnostic device of automobile is connected with Universal automobile OBD interface, in order to can carry out communication with these automobile computers.Here, the communications protocol of using when the miniature diagnostic device of automobile is connected with Universal automobile OBD interface mainly comprises the following protocol type that meets general international standard, as: ISO9141-2, SAE J1850VPW, ISO14230-4KWP2000, SAE J1850PWM, ISO15765-4CANBUS etc., then by the mode of up and down contact pin, realize passing mutually with the data of diagnostic device.
As shown in Figure 4, in automotive diagnostic system, detection module can detect automotive voltage and according to the automobile pressure drop that detects, determine vehicle condition; After determining vehicle condition, intercept module and intercept and the corresponding vehicle data of vehicle-state, and the vehicle data that will listen to is sent to memory module; File and the reference data etc. of having program stored therein in memory module also has analysis module, and like this, memory module can be carried out analyzing and processing to the vehicle data from intercepting module, thereby obtains the data message after analyzing and processing; Vehicle data after these analyzing and processing can be fed back to automobile computer and send corresponding control command by feedback module, thereby realizes the corresponding control to car electrics.Vehicle data after these analyzing and processing also can directly be sent to remote control module, in order to upload onto the server or directly send to the user.
Here, diagnostic module is mainly used in the control section of vehicle, can control the electric equipments such as car door, lock; And remote control module is mainly used in the remote data transmission with user and/or server.
Below will principle of work according to the automotive diagnostic system of the embodiment of the present invention be described by several exemplary embodiments.
The miniature diagnostic device of automobile and car carry out communication, and realize the conversion of communication modes by the above-mentioned agreement that meets general international standard, then set up by serial line interface and the miniature diagnostic device of automobile between data pass mutually, thereby can listen to the various data relevant with vehicle by intercepting module, after these data are sent to processor, can be by the memory module in processor to these data analysis, thereby understand for example status information of vehicle electric element, mileage, the relevant information of voltage, oil consumption etc. vehicle.
One of major function of diagnostic device be exactly to be utilized and to be intercepted module and intercept these car datas, and by program, these car datas is processed, and sends necessary control command, realizes the control to vehicle electric element.
For example, in the process of Vehicle Driving Cycle, intercept the data of module meeting real-time sense vehicle, when the travel speed that listens to vehicle surpasses 15km/h, intercept module and these data will be sent to memory module, with the reference data that is stored in memory module, compare, obtain corresponding control command, the operation thereby the automatic electric control door lock to vehicle of meeting latches, can well guarantee occupant's safety and the safety of finance like this; When the speed of a motor vehicle is 0, car door can not opened automatically, at this moment diagnostic device can be intercepted the driver and whether extracted car key and open driver's side car door (other car door opening not impact), extracted key or opened driver's side car door (these two conditions meet and get final product) if listen to the driver, other car door also can be opened simultaneously automatically.
By to the intercepting of car status information, after listening to the driver and extracting car key and opening car door again during closed door, then, by after detecting, according to actual conditions, car door is automatically latched, operation is carried out automatically rising in the vehicle window family.
Particularly, miniature checkout equipment can be intercepted the various data on automobile bus automatically, and data are carried out filter analysis, when listening to that car key is closed and after the driver leaves vehicle, when listening to vehicle window and not closing, miniature diagnostic device can rise the window instruction to what automobile computer (ECU) sent vehicle window, and the window of completing vehicle rises operation, thereby realizes the effective control to vehicle window.
In addition, by intercepting the pattern that module intercepts in diagnostic module, pulled out key and left vehicle when finding vehicle drivers, and after the time delay of controlling by time module, the mode that sends order by active again detects the electric equipment of vehicle, comprise: headlight, lampet, interior light, car door do not close warning, Sorte Nula etc., in case find the situation that these parts are not closed, can be converted to testing result by remote control module the form of word, and be to remind to the long-range transmission note of user.
The miniature diagnostic device of automobile after the various data that automatically listen on automobile bus, can carry out filter analysis to data.When listening to that car key is closed and after the driver leaves vehicle, the miniature diagnostic device of automobile can be detected the vitals of vehicle the very first time, such as car door, headlight, skylight, body light light etc. are various current consuming apparatus arranged, accurately to understand various device, whether be in closed condition., if these equipment are in closed condition, do not carry out SMS alarm; If there is equipment to be in the power consumption state, after having intercepted, the very first time informs that with the form of note which electric equipment of car owner do not cut out by the communication module on the miniature diagnostic device of automobile.Like this, the miniature diagnostic device of automobile can be informed car owner's warning message of being correlated with in time, avoids vehicle the situation that due to power consumption, can't start to occur.
By intercepting module and can also listen to the data of user's remote controller in diagnostic device, by analysis module, analyzing and processing is carried out in the order that telepilot sends, according to analysis result, the vehicle window family is operated, thereby control the lifting of the window of vehicle by remote controller.Do not rise if the user finds vehicle window when leaving car, or wanted to allow vehicle window first open ventilation before entering vehicle, can effectively control by remote controller, but the most basic be to control by automotive diagnostic system.
In addition, this detection module can also judge the state of vehicle.Because vehicle exists the very large opering characteristic of electric apparatus to have very large difference in running status and halted state, all intercepting all set up on the basis of formerly determining vehicle-state, in order to judge that this vehicle belongs to running status or halted state, need a good detection mode, now this detection method done following statement:
All communication pins of diagnostic device are all to design according to international standard, and because vehicle is constant voltage source, 16 pin are anodal, and 4 pin are negative analysing, and device is powered.But, because automobile storage battery is also connecting other electric equipment in car.In the moment of vehicle launch, have a pressure drop, and in the vehicle operating process, also have such pressure drop process, now in the following way, realize the accurate judgement whether vehicle is started or stopped.
Micro device uses the STM32 control chip, modulus (A/D) converter that this built-in chip type is one 12, can gather external voltage signal, and convert thereof into digital signal, control chip just can be calculated the magnitude of voltage that collects at present by the digital signal that collects.Under the vehicle parking state, it is a constant magnitude of voltage, generally at 12V between 13V, in automotive ignition moment, can drive other multiple electric equipment due to engine start, the electric current that this process need is larger, thus have very large pressure drop in engine start moment battery voltage, more than generally reaching 2V.During engine start, engine can the interior generator rotation of driving automobile be the storage battery charging, and this moment, battery voltage can rise to 13V between 14V.In the conversion by voltage signal, real-time carry out data sampling, if find that there is pressure drop, and circulation detects voltage,, if wherein exist higher than the above voltage of 13V, proves that one is directly subordinate to starting state; , if also there is pressure drop phenomena midway, can judge to filter by state., with same reason, can judge whether vehicle stops.
particularly, as front with reference to as described in Fig. 2, the miniature diagnostic device of this automobile has 16 stitch, its power supply mode is directly from power taking on diagnose connector, because this interface is an international standard interface, strict wiring definition is arranged, the #16 pin is the positive pole of automobile power source, the #4 pin is the negative pole of automobile power source, after so this micromodule equipment inserts the vehicle diagnosis seat, the electricity of vehicle accumulator is just directly guided to device interior, power pins equipment for equipment has been done independent processing, the real-time voltage to power module detects, the change in voltage that any one is trickle, capital makes a record.
For vehicle power supply voltage, originally be a constant voltage, but,, because vehicle need to drive various electric equipments, need storage battery to power during startup and realize the igniting of engine, so can there be certain pressure drop in vehicle motor ignition point battery voltage, the time of this pressure drop is very short, belong to a millisecond rank, by to this Millisecond other pressure drop do corresponding judgement, namely can accurately understand the vehicle launch time of moment.But, in the Vehicle Driving Cycle process,, due to operating habit and road conditions, also can there is such pressure drop phenomena, so, need to filter this pressure drop after vehicle launch, real realize the vehicle launch time judgement of moment.
This micro device is by to effectively the reading of voltage, and recycling software carries out filter analysis to the slight change of voltage, has really realized the accurate judgement that starts each time.
Can accurately judge the state of vehicle by the method, can accurately understand the start-up time of vehicle, the number of starts, working time, for Automobile Enterprises provides valid data, and provide guarantee for intercepting module in the accuracy of follow-up interception data.
In addition, this diagnostic device can also comprise test module, and this test module can be worked in combination with remote control module.Particularly, test module can pass through the vehicle-mounted OBD system acquisition failure message relevant with discharging, and remote control module can send to failure message on server.Detection to failure message is the core of vehicle diagnosis, and this detection module compliant with various protocols can be tested all vehicles that meets the OBD agreement the most accurately.This improvement for vehicle exhaust has effect very much.
Fig. 5 has shown that diagnostic device miniature according to the automobile of the embodiment of the present invention is used for obtaining the schematic diagram of emission information.
As shown in Figure 5, this diagnostic device has 16 stitch, corresponding one by one with the standard OBD interface of automobile, exactly this micromodule equipment directly is inserted on the vehicle diagnosis seat and gets final product with the connected mode of automobile, it can understand the failure message relevant with vehicular discharge the very first time.And, this diagnostic device also has the GSM communication module, this miniature diagnostic device can initiatively send note or by server, inform car owner's relevant information, and the car owner also can login application software and obtain relevant information or send the detection instruction to micro device from server.
Vehicle diagnosing apparatus is intercepted by detection, and all communication datas are analyzed, and in the situation that the trouble light (MIL) of vehicle lights, can judge accurately that the discharging of vehicle exceeds standard, and that must and advance keeps in repair.In the situation that failure classes light, how many kilometers of vehicle operating, whether carried out clear code operations and can be recorded to timely on automobile computer and by this equipment and upload to Surveillance center, thereby realized that Surveillance center finds when this type of fault appears in vehicle in time to remind, warn the car owner or take other to miss.
miniature diagnostic device is installed on automobile OBD diagnosis joint, be connected with vehicle-mounted OBD system, the Real-Time Monitoring engine, catalytic converter, grain catcher, lambda sensor, emission control systems, fuel system, a plurality of systems such as EGR and parts, simultaneously to these data analysis, data under these data and normal condition are compared, when finding data exception, automatic analysis goes out those parts of vehicle and breaks down whether can affect exhaust emissions, when the discovery meeting exerts an influence to exhaust emissions, can be with the VIN of vehicle (identification of the vehicle) code, license plate number, automatically upload onto the server with the discharging relevant information such as diagnostic trouble code that exceed standard, can be for the monitoring of traffic control department, send simultaneously the fault note to car owner's mobile phone, remind the car owner to keep in repair, if the car owner is not maintenance at the appointed time, traffic control department can carry out corresponding punishment to it.
Just outer user also can initiatively detect vehicle by sending the micro device application software that note or use be arranged in mobile phone, miniature diagnostic device diagnosis report can be reported to server or the note form be returned to user mobile phone.
In the above-described embodiments, the basis that all technology realize is all on the OBD joint, realizes effective expansion of plug-in function, and in the process that realizes, the effective voltage detecting technology of employing, guaranteed authenticity and the accuracy of subsequent result.Rise window about shaking control, fall window, start the function that latches, unblanks etc., implementation method has a variety of,, for auto vendor, can adopt the control circuit of automotive interior to realize, but different to these functions of car of same level.Automotive interior can be realized this function by adopting different electrical control modules, but realize by OBD interface external hanging type automobile function expansion pattern really seldom.The maximum characteristics of this invention are exactly the largest extension that the external hanging type micromodule is realized the vehicle service function, are car owner's service.
It should be noted that finally, above embodiment is only in order to describe technical scheme of the present invention rather than the present technique method is limited, the present invention can extend to other modification, variation, application and embodiment in application, and therefore thinks that all such modifications, variation, application, embodiment are in spirit of the present invention and teachings.
Claims (10)
1. miniature diagnostic device of automobile, the miniature diagnostic device of described automobile is connected with Universal automobile OBD interface, thereby with automobile computer, carries out communication, and the miniature diagnostic device of described automobile comprises:
Detection module, described detection module is for detection of the pressure drop of automobile and according to the automobile pressure drop that detects, determine vehicle condition;
Intercept module, the described module of intercepting is used for intercepting and the corresponding vehicle data of vehicle-state;
Memory module, described memory module is carried out analyzing and processing according to described the module described vehicle data that listens to and the vehicle condition of determining of intercepting to described vehicle data; With
Feedback module, the described feedback module vehicle data after with analyzing and processing feeds back to automobile computer, so that automobile computer sends corresponding control command, thereby realizes corresponding control to car electrics.
2. the miniature diagnostic device of automobile according to claim 1, also comprise remote control module, and described remote control module has communication module, and described communication module will be from the vehicle data transmission after the processing of described memory module to user or server; Preferably, the miniature diagnostic device of described automobile comprises by row's pin the first plate and the second plate that are connected, described detection module, intercepts module, memory module and feedback module and is arranged on described the first plate, and described remote control module is arranged on described the second plate; More preferably, the remote control module on described the second plate is connected by described row's pin with the memory module on described the first plate.
3. the miniature diagnostic device of automobile according to claim 1, wherein said memory module comprises analysis module, and described storage module stores has standard information, intercept the vehicle data that module listens to and be sent to memory module by described, and by the standard information with storing in memory module, compare, and by described analysis module, being analyzed, thereby the vehicle data after the acquisition analyzing and processing.
4. the miniature diagnostic device of automobile according to claim 1, wherein said vehicle data comprise at least a in the following information relevant to vehicle: the status information of vehicle electric element, mileage, voltage, oil consumption or the speed of a motor vehicle; Preferably, the status information of described vehicle electric element comprises at least a in the information of following vehicle electric element equipment: headlight, lampet, interior light, car door do not close lifting or the luggage case of warning, vehicle window.
5. the miniature diagnostic device of automobile according to claim 1, also comprise for the SIM card socket that inserts SIM card, thereby make the miniature diagnostic device of described automobile realize long-range SMS alarm service by SIM card.
6. the miniature diagnostic device of automobile according to claim 1,, wherein described when intercepting module and intercepting work, intercept the data that module can the real-time sense vehicle; Preferably, when described detection module detects vehicle and is in transport condition, and described when intercepting module and listening to Vehicle Speed and surpass 15km/h, described feedback module can be to the car door operation that automatically latches; When intercepting module and listening to Vehicle Speed and be 0, car door can not opened automatically when described, and when the described module of intercepting listens to the driver and extracts key or driver's side car door opening, described feedback module can be controlled other car door opening.
7. vehicle diagnosis method said method comprising the steps of:
Utilize the miniature diagnostic device of automobile to use general international standard agreement and OBD interface to carry out communication, thereby obtain vehicle data; The miniature diagnostic device of described automobile comprises: detection module, intercept module, memory module and feedback module, the miniature diagnostic device of described automobile has following job step:
Described detection module detects the pressure drop of automobile and according to the automobile pressure drop that detects, determines vehicle condition;
Utilize the described module of intercepting to intercept and the corresponding vehicle data of vehicle-state;
To intercept the described vehicle data that module listens to and be sent to described memory module by described, thereby make described memory module carry out analyzing and processing according to the vehicle data that listens to and the vehicle-state determined to described vehicle data; With
Vehicle data after processing by analysis is sent to described feedback module, and by described feedback module, by Universal automobile OBD interface, feeds back to automobile computer, and automobile computer sends corresponding control command according to the vehicle data of feedback.
8. vehicle diagnosis method according to claim 7, also comprise and utilize remote control module to carry out the telecommunication transmission, described remote control module has communication module and antenna, and wherein said communication module is used for needing the data that send pass to the client or upload onto the server; Preferably, the miniature diagnostic device of described automobile comprises for the SIM card socket that inserts SIM card, thereby makes the miniature diagnostic device of described automobile realize long-range SMS alarm service by SIM card.
9. vehicle diagnosis method according to claim 7, wherein said memory module comprises analysis module, and described storage module stores has standard information, when work, be sent to memory module by described vehicle data of intercepting the module acquisition, and by the standard information with storing in memory module, compare, analyzed by described analysis module, thus the vehicle data after the acquisition analyzing and processing; Preferably, described when intercepting module and intercepting work, intercept the data that module can the real-time sense vehicle.
10. the miniature diagnostic device of automobile according to claim 7, wherein said vehicle data comprise at least a in the following information relevant to vehicle: the status information of vehicle electric element, mileage, voltage, oil consumption or the speed of a motor vehicle; Preferably, the status information of described vehicle electric element comprises at least a in the information of following vehicle electric element equipment: headlight, lampet, interior light, car door do not close lifting or the luggage case of warning, vehicle window.
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