CN2304906Y - Automobile fault alarming indicator for various languages for display - Google Patents

Abstract

The utility model relates to an automobile fault alarming indicator for various languages for displaying. A microcomputer 151 of a computer control board 15 in a body 1 of the utility model is connected with an ROM152 written with characters, database and relevant software programs, an RAM 153, a signal collecting circuit 154 and a display driving circuit 155 through three bus lines 158. The signal collecting circuit 154 is connected with a signal controlling and scanning circuit 222 and is also connected with a car diagnosing seat 8 through a detecting plug 223 of an interface device 2. The utility model can be manufactured according to various types of cars, and only the software programs need to be changed. The utility model can diagnose the fault and the hidden trouble of each large system of the cars and use various languages selected in advance to display, and has the advantages of small size, light weight, simple operation and superior cost performance.

Description

The Motor Maintenance failure warning apparatus that shows planted in optional literary composition

The utility model relates to electronic technology and is used for Motor Maintenance maintenance and safe driving, particularly relates to micro-computer technology and patrols data acquisition, information processing (comprising failure message and numerical analysis) and the demonstration thereof that the slowdown monitoring switch scanning technique is applied to many kind cars of each car system of Europe, the U.S. and Asia.

High-grade slightly car in the modern international automobile industry, all employing electromechanical integration high-and-new science and technology in its engine (ENG), automatic transimission (A/T), anti-lock braking system (ABS) and air bag systems such as (SRS).Several covers even tens cover computer control panels and corresponding sensor circuit thereof are installed on a car.Be implemented in the vehicle ' each system's control and detection of dynamic.Driver's seat or engine room at each car are equipped with diagnose connector or the flash of light transmitter of gathering failure message and numerical value.Automobile is before doing than the travelling of long way journey.The product of available a kind of being called " Motor Maintenance trouble shooting device " reads information from described diagnose connector or flash of light transmitter.Check voluntarily that by the person for driving a car automobile has not potential faults.Prevent in the driving way.Particularly on highway, break down and cause trouble and worries.U.S. Sheng Puluo (Sunpro) company and Ai Tefang (Actvon) company.And German boss (Bosch) company is that several vehicles of U.S.'s Ford (Ford), general (GM) and French Reynolds companies such as (Renault) are made and sold above-mentioned trouble shooting device, the commission merchant of these car types in service after sale also all to customer recommendation described " Motor Maintenance trouble shooting device ".Thereby make this series products in very great demand.Especially be subjected to the woman's bicycle the elderly that advocates peace and like that the international market is enormously potential.The above-mentioned prior art products that is used for Motor Maintenance, it is simple in structure.There is not appliance computer and LCD (liquid crystal display) technology.Can not automation collection information.Its defective can be reduced following 3 points: 1. use universal logic circuit IC (integrated circuit) chip.Do not believe affected part reason and storage function.Failure message is told the operator by the different flashing mode of light emitting diode.And can only the read the code value but and do not know the fault content.Must check again that also the instructions appendix just understands the description of fault content; 2. can't utilize programmed control to form a plurality of switching value signals, control and patrol slowdown monitoring switch scanning.Thereby can only examine a certain system that surveys automobile, normally only detect single ENG (engine) system.And there is not explanatory note to show; 3. only be fit to the very slow occasion of automobile fault information transfer rate.If send several information a second, the flicker of light emitting diode is read with regard to being difficult to allow the people with the naked eye discern so.The failure message transfer rate of in fact contemporary many cars is all quite high.

The purpose of this utility model is to avoid above-mentioned the deficiencies in the prior art part and proposes a kind of use single chip microcomputer and LCD technology.Use produces a plurality of switching value signals under software program control, and so as to control with patrol the acquisition technique of slowdown monitoring switch scanning, gather, store and handle thereby realize the vehicle failure letter suffered from automatically, and with the Motor Maintenance failure warning apparatus of liquid crystal display.For satisfying different regions, world user's needs, the get on the car demonstration of failure message of LCD screen can be selected not identical text kind arbitrarily, comprises with Chinese and with foreign languages such as English, method, moral, day, Russia, Spain, Italy and Korea showing.This need change in it character repertoire and relevant software programs among PROM (reprom) and can accomplish before described caution instrument dispatches from the factory.Patrol the slowdown monitoring switch scanning technique owing to adopt.Can comprise ENG (engine), A/T (automatic gear-box), ABS (preventing the locking brake gear), SRS (air bag), A/C (air governor) and ADS (suspension suspension system) to each big system in the automobile.All realize detecting automatically.The purpose of this utility model can be by realizing by the following technical solutions: design and produce a kind of optional literary composition and plant the Motor Maintenance failure warning apparatus that shows.Comprise body and interface arrangement, there is display screen in the surperficial central authorities of body.The next door and below be the simple key dish.The computer control panel is housed in the body, and the plug end of its connecting interface device, this plug end are inserted by configuration information transmission channel reading of data in the diagnose connector of maintenance automobile.Microcomputer in the body on the computer control panel connects the ROM (ROM (read-only memory)) that writes character, data bank and relevant software programs by A (address), D (data), C (control) three buses.Connect RAM (read/writable memory device), information acquisition circuit and display driver circuit.Microcomputer is directly done scanning sequence control to keypad, and connects display screen via driving circuit.The synchronous signal Acquisition Circuit connects signal controlling and sweep circuit again.And plug connects the car diagnose connector more after testing.

The drawing of accompanying drawing is described as follows: Fig. 1 is the schematic appearance of the utility model failure warning apparatus; The physical concept that Fig. 2 is to use described caution instrument to do the vehicle failure test is described block scheme; Fig. 3 is the logic block-diagram of the thick reason circuit of the utility model caution instrument; Fig. 4 is the outline flowchart of the used computer software function module of the utility model caution instrument; Fig. 5 is electrical schematic diagram, outward appearance sketch and diagnose connector 8 synoptic diagram of position onboard of the described caution instrument interface arrangement 2 that is exclusively used in Toyota sedan system; Fig. 6 is electrical schematic diagram and described sketch and the synoptic diagram that is exclusively used in the interface arrangement 2 of benz car system; Fig. 7 is electrical schematic diagram and described sketch and the synoptic diagram that is exclusively used in the interface arrangement 2 of Lexus car system; Fig. 8 is electrical schematic diagram and described sketch and the synoptic diagram that is exclusively used in the interface arrangement 2 of Mazda car system.

Be described in further detail below in conjunction with the most preferred embodiment shown in each accompanying drawing: for satisfying the needs of the higher class car of maintaining.Make car owner or person for driving a car do long-distance travel or on before the highway.Can be convenient, clearly the standing state of each big system of own automobile and the fault or the potential faults of existence are learnt in test.The utility model provides a kind of optional literary composition to plant the Motor Maintenance failure warning apparatus that shows.As shown in Figure 1.Comprise body 1 and interface arrangement 2.There is display screen 13 in the surperficial central authorities of body 1.The next door and below be simple key dish 14.Computer control panel 15 is housed, the plug end 22 of its connecting interface device 2 in the body 1.This plug end 22 is inserted by configuration information transmission channel reading of data in the diagnose connector 8 of maintenance automobile.Fig. 2 briefly describes with a succession of little square frame and uses this caution instrument to examine the physical concept of survey do vehicle failure.Computer control panel 15 in the described caution instrument body 1.See Fig. 3, the microcomputer 151 on it connects the ROM152 that writes character, data bank and relevant software programs by A (address), D (data), C (control) three buses 158.Connect RAM153, information acquisition circuit 154 and display driver circuit 155.Microcomputer 151 is directly done scanning sequence control to keypad 14.And via driving circuit 155 connection display screens 13.Synchronous signal Acquisition Circuit 154 connects signal controlling and sweep circuit 222 again.And plug 223 connects car diagnose connector 8 more after testing.Computer control panel 15 and interface arrangement plug end 22 used+12 volt power supplys are introduced from this diagnose connector 8.Described control panel 15 and plug end 22.Its circuit structure belongs to prior art.Used components and parts are buied from market, see the inventory that this instructions end is attached.The utility model caution instrument is for different car types.Benz (Benz), Toyota (Toyota), Lincoln (Lincoln).The circuit structure of its computer control panel 15 is identical.But must abide by the failure message feature, data layout, transfer rate of this manufacturer respectively and predetermined data collection communication agreement separately, design software function program and related data, database.They are solidificated among the ROM152 on the control panel 15.They pass through the system bus (A, D, C three buses) of microcomputer 151 under CPU (central processing unit) control.The operation function running program.In fact, be rewriting program convenience, the PROM that are to use of the ROM152 on the control panel 15 more.Especially E ²PROM (electric erasable electricallyalterablereadonlymemory).By being connected the information acquisition circuit 154 on the bus 158.And interface arrangement plug end 22.Transmitted communication link with setting up data between the diagnosis car.On Fig. 3.The RAM153 that connects on the bus 158 is as the data buffer in the program run.Simple key dish 14 is by the keyboard scan programmed control of microcomputer 151.Realize person-machine dialogue.Comprise Yes (affirmation) key, No (negating) key and Up (on) (↑), Down (descending) (↓) change the screen key.Car is being looked into as fault when examining.Microcomputer 151 provides system and function selecting menu and help information to car owner or person for driving a car by display driver circuit 155 on LCDs 13, demonstration fault in back is looked into and examined the result again.Caution car owner or person for driving a car.Inform which position of this car is badly in need of maintaining, maintenance.The car of the higher class of the various trades mark all is provided with Computerized monitor system in car.Running status in order to systems such as monitoring, control ENG (engine), A/T (wheel box), ABS (anti-lock brake), SRS (air bag), A/C (air governor) and instrument panels.Code implication and data information load mode are described according to oneself company standard failure definition by each manufacturer.The utility model caution instrument will be surveyed automobile read failure information and data from being examined.Must abide by the respectively standard of this manufacturer, the design specialized interface circuit collects information according to the respectively data transfer rate and the communications protocol of this manufacturer, again according to the standard of this manufacturer's definition respectively.Abide by its data layout.The implication of decipher failure-description code shows the fault content description with Chinese or optional a certain foreign language at last on display screen 13.The physical concept of this process is described clear with a succession of little square frame on Fig. 2.Described function is then realized by the software function module that the utility model writes among the ROM152.Its concise and to the point flow process is seen Fig. 4.The utility model caution instrument is at each tame manufacturer, for example a car system of Germany's benz, Japanese Toyota, U.S.'s Ford.Specialized designs is made.So do not needed to select car system during the design software functional module.As shown in Figure 4, finish initialization, parameter setting and self check after the start, enter test macro immediately and select.After system is selected.For example select test ABS (anti-lock braking system).What follow is that test function is selected, and alternative have: one. test failure, two. and read failure content, three. heavily read diagnostic trouble code, four. remove diagnostic trouble code.Can see the design of the utility model fault diagnosis software modular program.The tree data modular structure is arranged.The utility model caution instrument is for different manufacturers and the different interface arrangement 2 of different car system's palpus uses.See Fig. 5 to Fig. 8.The plug end 22 of this interface arrangement 2 comprises signal controlling and sweep circuit 222 and test plug 223.Circuit 222 comprises a binary channels or multichannel analog switch N again at least.Its input pin A, B, C or A, B, C, D are through interface cable 21 attachment plugs 26.In order to introduce three or four switching variables.Can produce eight passages or 16 channel selecting.Be respectively and examined the failure message delivery outlet configuration information transmission link of surveying the systems such as ENG, A/T, ABS, A/C and ADS on the car diagnose connector 8.Plug end 22 at some car system.Its circuit 222 comprises that also transistor switching circuit is used for inverting buffer.The collector of described each transistor V or base stage are connected to corresponding each contact pin of test plug (223).At this moment the information acquisition circuit 154 on the computer control panel 15 is via the interface cable 21 of connector 16,26 and interface arrangement 2.Be connected with sweep circuit 222 with the signal controlling in the plug end 22.Certainly, also this failure message pre-process of plug end 22 and the function of conversion switch can be merged design on computer control panel 15.So.Just direct connection of signal acquisition circuit 154 on this control panel 15 is positioned on the same control panel 15.But signal controlling on another little printed circuit board (PCB) and sweep circuit 222.And then through connector and cable joint detection plug 223.In this case, the plug end 22 of interface arrangement 2 only is that one or two is exclusively used in the test plug 223 that a certain car is.Sometimes even can also adopt plain mode.The plug end 22 that is interface arrangement 2 is two or three Probing pens (pin).By read failure information in the corresponding jack of manually-operated insertion car diagnose connector 8.The utility model is the interface arrangement 2 that car designs and produces for each car, its switching value signal controlling and patrol and survey scanning electrical schematic diagram, schematic appearance and car diagnose connector 8 locations drawing and be showed in Fig. 5 to Fig. 8.Wherein Fig. 5 is the most preferred embodiment that is used for Toyota sedan system.8 core cables 21 connect computer control panel 15 by connector 26,16.See Fig. 1 and Fig. 3.Provide input pin A, B, the C of three switching value signal to eight tunnels analogy switch N1 to patrol survey scanning.Eight channel selecting of its generation can constitute transmission link at each system information on the diagnose connector 8 respectively.In the present embodiment.7 pin output " request the sends data " order of connector 26.By transistor V1 inverting buffer.Deliver to diagnose connector 8 again.6 pin of connector 26 are information transmission enabling signals.8 pin are to receive the information input terminal mouth.The most preferred embodiment of car system of being used to run quickly is seen Fig. 6, and 8 core cables 21 connect computer control panels 15.Provide input port A, B, C, the D of four switching variables to ten, six tunnels analogy switch N2 to patrol survey scanning, produce 16 channel selecting, can realize that to the benz car be that 16 systems make fault diagnosis, the good vehicle of caution car owner's maintenance.Reach safety and go out the car purpose.2 pin of connector 26 connect the INH end of analog switch N2 among the figure, and INH=0 is a duty, and INH=1 is an illegal state.8 pin of connector 26 are to receive the information input terminal mouth.The most preferred embodiment that is used for Lexus (Lexus) car system is seen Fig. 7, and 8 core cables 21 connect computer control panel 15, and 3,4,5 pin of connector 26 connect A, B, the C input end of two eight tunnels analogy switch N3, N4 simultaneously.Export eight tunnel " request sends data " order by N3, selecting the Lexus car by N4 is that corresponding eight of car is treated examining system.The communication link that configuration information transmits.Through 8 pin of connector 26, with the failure message input computer control panel 15 that receives.Finish information processing.The most preferred embodiment that is used for Mazda (Mazda) car system is seen Fig. 8, and 3,4,5 pin of its connector 26 connect A, B, the C port of two eight tunnels analogy switch N5, N6 simultaneously, is exported " request sends data " order of eight paths by N5.Each transistor V2～V6 selects corresponding eight special examining systems as inverter buffer by N6.8 pin through connector 26 are sent to computer control panel 15 with failure message.Use the utility model caution instrument to carry out as follows: 1. car is under surveying car at follow-up, taking the caution instrument that aims at this car system design " sits in the right seat ", it for example is Lexus car system, then must use the Lexus car is failure warning apparatus, its interface arrangement plug end 22 is inserted the diagnose connector 8 below the driver's seat front panel in the car, see Fig. 7, described caution instrument promptly obtains+12 volts of power supplys from diagnose connector 8 and supplies with; 2. described caution instrument begins to enter initialization, parameter setting and self-check program, and screen 13 shows the test macro selection.By ↑ (on), ↓ (descending) key is selected wants test macro, presses acknowledgement key again.Screen 13 shows the test function selection, sees Fig. 4.As select the Read fault sign indicating number, and then to warn instrument and enter detecting operation program car to be measured, diagnostic result shows on screen 13, buys car in installments main or the person for driving a car reads.The car that the utility model failure warning apparatus can be used for maintaining comprises: 1. European car is: benz (Benz), rich and powerful people (Volvo), popular (Volkswagen), Audi (Audi), BMW (BMW); 2. U.S. vehicle is: general (GM), Ford (Ford), Chrysler (Chrysler); 3. Asia car system: the Lexus (Lexus) of Japan, Mazda (Mazda), Toyota (Toyota), daily output (Nissan), Honda (Honda), Mitsubishi (Mitsubishi), big sending out, and the modern times of Korea S (Hyundai), Daewoo (Daewoo) etc.; 4. domestic car: Audi, popular Santana 2000, little red flag.Compare with prior art, the outstanding advantage of the utility model caution instrument is: 1. can make special-purpose failure warning apparatus at the various style car ranges of all manufacturers produce of world market, structure is basic identical, need only change software program; 2. can examine for many positions of car and survey fault and potential faults, comprise each big system such as engine, wheel box, anti-lock brake, air bag; 3. screen directly shows the fault content description with Chinese or with selected in advance a kind of foreign language, and is simple and clear; 4. small volume and less weight, simple to operate, easily-learned easily mastered.Be fit to car owner or driver and check, examine the use of survey car whenever and wherever possible; 5. the ratio of performance to price is superior.The used electronic devices and components inventory of each most preferred embodiment of the utility model is as follows: drawing reference numeral components and parts title model manufacturer or circuit symbol 151 single chip microcomputer 80C31,80C32 Intel 152 ROM (read-only memory) PROM27C20 NEC.

PROM27C40 Intel

E ²PROM?28FO10

28F,O20 153 read/writable memory device 62256 Intel,

MOTOROLA 154 information acquisition circuit 74HC259 NEC.

74LS273 Intel

GAL18CV8 155 display driver circuit 82C55 MOTOROLA 13 LCD MODULE 100 * 32 dot patterns do not limit V1～V6 transistor 4401 and do not limit N1.N3～N6 eight tunnels analogy switches 4051 and do not limit N2 16 tunnels analogy switches 4067 and do not limit

Claims (5)

1. the Motor Maintenance failure warning apparatus that shows planted in an optional literary composition, comprises body (1) and interface arrangement (2); There is display screen (13) in the surperficial central authorities of body (1), the next door and below be simple key dish (14), computer control panel (15) is housed in the body (1).The plug end (22) of its connecting interface device (2).This plug end (22) is inserted by formation letter in the diagnose connector (8) of maintenance automobile and is suffered from the transmission channel reading of data.It is characterized in that:

Microcomputer (151) on the interior computer control panel of body (1) (15) connects the ROM (ROM (read-only memory)) (152) that writes character, data bank and relevant software programs by A (address), D (data), C (control) three buses (158).Connect RAM (read/writable memory device) (153), information acquisition circuit (154) and display driver circuit (155).Microcomputer (151) is directly done scanning sequence control to keypad (14).And via driving circuit (155) connection display screen (13); Synchronous signal Acquisition Circuit (154) connects signal controlling and sweep circuit (222) again.And plug (223) connects car diagnose connector (8) more after testing.

2. plant the Motor Maintenance failure warning apparatus that shows according to the described optional literary composition of claim 1, it is characterized in that: the plug end (22) of interface arrangement (2) comprises signal controlling and sweep circuit (222) and test plug (223).Circuit (222) comprises a binary channels or multichannel analog switch N again at least.Its input pin A, B, C or A, B, C, D are through interface cable (21) attachment plug (26); Plug end (22) at some car system.Its circuit (222) comprises that also transistor switching circuit is used for inverting buffer.The collector of described each transistor V or base stage are connected to corresponding each contact pin of test plug (223).

3. plant the Motor Maintenance failure warning apparatus that shows according to claim 1 and 2 described optional literary compositions.It is characterized in that: the information acquisition circuit (154) on the computer control panel (15) is via the interface cable (21) of connector (16,26) and interface arrangement (2).Signal controlling and sweep circuit (222) in the attachment plug end (22).

4. plant the Motor Maintenance failure warning apparatus that shows according to the described optional literary composition of claim 1.It is characterized in that: the plug end (22) of interface arrangement (2) only is that one or two is exclusively used in the test plug (223) that a certain car is.

5. plant the Motor Maintenance failure warning apparatus that shows according to claim 1 and 4 described optional literary compositions.It is characterized in that: the signal acquisition circuit (154) on the computer control panel (15) directly connection is positioned on the same control panel (15).But signal controlling on another little printed circuit board (PCB) and sweep circuit (222).And then through connector and cable joint detection plug (223).

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