CN2710974Y - Expansible IC card type vehicle-carried multi-functional words picture electronic displaying screen controlled by switch - Google Patents

Abstract

The utility model relates to an expansible IC card type vehicle-carried multi-functional word and picture electronic displaying screen controlled by a switch. The utility model comprises a displaying screen and a control switch box. The utility model has the functions of automatic display of the vehicle states of right and left turning, braking, backing, etc, dynamic display of pictures and words, automatic reception of anti-theft alarming signals or distance measuring alarming signals, hidden alarming against the hijack, etc, and uses a control switch and a matching IC card to change the displaying effect and contents. The circuit design comprises a single-chip control circuit, a displaying drive circuit, an IC card socket circuit, a switch and vehicle state signal input circuit, a switching power supply circuit, an EMI filtering circuit, a status indicator circuit of the control switch, an automatic start-up circuit for anti-theft alarming signals, etc. The structure is designed as a rotating shaft manner which can freely regulate the angle of elevation, with a rubber sealing ring, a front casing, a filter glass, a displaying plate, an IC card base board, a back casing and an IC card base arranged in the front-to-back order, and with an upper casing, a rubber mat, screw bolts and a base arranged in the top-to-bottom order.

Description

The extendible IC-card formula Vehicular multifunctional graph display screen of switch control

Technical field

The utility model relates to a kind of vehicle-mounted picture and text electronic read out instrument of the extendible storage IC-card by switch control, can substitute products such as existing traffic allowance poster and automobile high-mount stop lamp, high-order steering indicating light, high-order ornament lamp, and have the function of automatic access car alarm alerting signal or automobile apomecometer alerting signal, be held as a hostage hidden warning function and other additional functioies.

Background technology

At present, the structure of known automobile high-mount stop lamp, high-order steering indicating light, decoration taillight is to add that by filament lamp, halide torch, electricity-saving lamp or many light-emitting diode series connection circuit and corresponding current-limiting circuit detail assemblys such as supporting reflection shield, shell form.There are the following problems for the said goods: can only finish specific simple function; Decorative effect is poor; Power consumption is big, efficient is low: the power of many products is more than 20 watts, and some product power-efficient is lower than 50%, and load is too heavy with respect to the feed circuit of automotive battery; The power input voltage narrow range, many products can only be worked under the single power supply voltage about 12 volts or about 24 volts, and power supply voltage variation can influence its display effect even can't normal operation; Displaying contents is not directly perceived, and can't show that picture-character information especially can't dynamically show can self-defining picture-character information.

In addition, automobile in use often need be puted up some word contents on vehicle body, such as: fresh driver is often puted up " Getting Started, please assist me in any way you can "; New car need be puted up " break-in period "; The barrier parking need be puted up " temporary term stop; please detour " or printed words such as " break down maintenances; please detour " for some reason on express highway, civilized terms such as " please remain a safe distance behind the car in front " in addition commonly used, " asking the civilization driving ", some personalized posters or advertising poster traffic allowance in addition.These traffic allowances exist following problem: displaying contents and outward appearance are lack of standardization, the traffic allowance that has even can stop back car driver's sight line; Can't realize that dynamic demonstration, flicker show, the change color shows that display effect is relatively poor; Can only be used for showing that night, display effect was poor, and is not eye-catching daytime.

Present car alarm product exists can only audible alarm, the problem of alarm display intuitively can't be provided simultaneously, when a lot of cars of parking area are parked in a time-out, the crowd noted and the position of locating alarming vehicle intuitively near identical alarm sound can't cause apace.

Present automobile range finding annunciator product exists equally can only audible alarm or can only report to the police and point out safety to Ben Che driver, can't alarm intuitively is provided for simultaneously contiguous vehicle, reminds it to remain a safe distance behind the car in front.

In addition, along with the increase of automobile pollution, rob car, rob incident such as car and also happen occasionally, people need a kind of device that can hidden warning urgently, are letting alone under offender's the prerequisite, send the warning distress signals.

For solving the variety of problems that above product exists, simultaneously also in order to satisfy current social informatization, diversification, personalized consumption demand, the utility model proposes a kind of switch control can extension storage formula IC-card vehicle-mounted picture and text electronic read out instrument.

Summary of the invention

For solving the following technical matters that existing automobile high-mount stop lamp, high-order steering indicating light, high-order ornament lamp product exist: function singleness, demonstration and decorative effect are poor, the power line voltage input range is narrow, power consumption big, the power supply service efficiency is low, displaying contents is directly perceived, can't dynamically show can self-defining picture-character information etc. problem; Simultaneously for solving the following technical matters that the traffic allowance poster exists: displaying contents and outward appearance are lack of standardization, display effect is poor, show problems such as not eye-catching night; The utility model provides a kind of vehicle-mounted picture and text electronic read out instrument of the extendible storage IC-card by switch control, form by read-out and master cock box, the read-out shell filling has the external IC-card seat that prevents dust, be designed to adjust the turning cylinder mode at the read-out elevation angle on the structure, this device provides the function of automatic access car alarm alerting signal or automobile apomecometer alerting signal, be held as a hostage hidden warning function and other additional functioies simultaneously except that the basic function that can realize the said goods.Use master cock and supporting IC-card can change and expand its display effect and displaying contents.

Two housings of design are respectively read-out housing and master cock box housing on the utility model physical construction; Adopt display panel, IC-card seat board and three discrete schemes of wiring board of key-board on the circuit structure, display panel and IC-card seat board are installed in the read-out housing; Key-board is installed in the master cock box housing.Adopt cable connection between the wiring board and between wiring board and the automobile circuit.Do the technical scheme explanation with regard to circuit and two aspects of mechanical mechanism respectively below.

One. circuit structure and annexation technical scheme:

Include control circuit and demonstration and driving circuit on the display panel.Control circuit adopts the address bus of 51 serial compatible micro controller systems, the extended mode of data bus in the design.Adopting the 78E58 micro controller system is main control CPU, 813L is a watchdog chip, 74HC245 is a bus driver, 74HC373 is the low order address latch, the 29C040FLASH memory device is as the data memory that extends out character library, and the 62256RAM memory device is as extending out data memory, and 74HC157 is the incoming signal gate, MC34063 is a DC-DC Switching Power Supply control chip, adopts common mode inductance, chemical capacitor, magnetic bead to form power supply EMI input filter circuit.Demonstration and driving circuit adopt 74HC154 to select decoder for row, TIP127 Darlington aerotron is the row driving tube, and 74HC138 is the column selection decoder, and 74HC373 is the row latch, 74HC245 is a row driver, adopts the LED lattice module (N=8 or 16) of N * N to be spliced into screen.Expand corresponding row latch, row driver and led module in proportion according to needed Chinese character and color sum and can realize many Chinese characters screens and three looks screen, color line screen.

Element circuit annexation on the display panel is: the 36-43 pin of U1 W78E58 (P0 mouth) is as data bus, and 24-31 pin (P2 mouth) is as the high address bus; The A mouth end of bus driver U33 74HC245 and B mouth end are connected respectively on the P0 mouth and system data bus of U1; Low address signal is latched by U4 74HC373, i.e. the D mouth welding system data bus of U4, and the Q mouth connects the low order address line, and 11 pin connect the 33 pin ale signal lines of U1; The A wire of the A mouth connected system of U29 W29C040, the P4 mouth of U1, the P4 mouth of U1 be as the highest addresses line of U29, QD mouth connected system data line, and 24 pin meet the reading signal lines RD of micro controller system; The reading signal lines RD that the A wire of the A mouth connected system of U2462256, the data line of D mouth welding system, 22 pin connect micro controller system, the write signal line WR that 27 pin connect micro controller system; 2-5 (P1.0-P1.3) pin of U1 W78E58 micro controller system meets the 20-23 (A of U2 74HC154, B, C, D) pin is as line scanning source code line, 1-11 after the U2 decoding output, 13-17 pin 200 ohmages of connecting respectively connect the base stage of T1-T26 Darlington transistor driving circuit, the collecting electrode of Islington tube drive circuit connects the horizontal scanning line of display module, U2374HC138 connects the A wire decoding back of U1 and exports gating U6-U13 totally 8 74HC373 data latches, the output of U6-U13 respectively by U14-U21 totally 8 74HC245 bus drivers drive as column scan line 51 ohmages of connecting respectively and connect the column scan line of display module, the bus addressing mode service data latch of employing micro controller system carries out column scan and the IO mouth scans the compound scan mode that line scanning is carried out in external decoder output, has realized the function that dynamic scan LED screen shows; U3 74HC157 input end 2,3,5,6,10,11,13,14 pin connect driving states signaling conversion circuit and key-board signal input circuit, and its mouth 4,7,9,12 pin connect the 6-9 pin of U1, realize gathering the function of incoming signal; Output strobe pin 1 pin of U3 connects 14 (P3.2) pin of U1, output pin 4,7,9,12 pin of U3 connect the 6-9 pin of U1, U100 74HC04 selects pin as the 22 pin sheets that its output pin 2 pin of address strobe decision circuit meet U29, the P3.4 of U1 is connected clock and the data-signal of 6 and 5 pin of U6IC deck as IC-card with the P3.5 pin, emulation I2C bus timing scheme, the function of realization reading and writing IC card; The P3.3 pin of U1 connects the deck contact, and whether the monitoring IC-card is online, and 11 pin of U1 connect 6 pin of U22, and as removing the house dog pin, reset pin 10 pin connect 7 pin of U22; Normal usage when all the other pins of U1 all extend out use according to micro controller system is used, read signal (19 pin), write signal (18 pin), reset signal (10 pin), PSEN (32 pin), ALE (33 pin), EA (35 pin) and crystal oscillator pin (20-21 pin), its circuit connecting relation is seen shown in Figure 7; Switch power supply route Switching Power Supply control chip U5 3M03A and other peripheral cells constitute, wherein M1 IRF9540 is as expanding the stream pipe, its grid level connects 1 pin of U5, source class meets its L1 220uH/3A and makes energy storage inductor, leak 7 pin that level meets U5, D1 MBR1045 connects the source class of M1 as its K level of flywheel diode, its A level ground connection, C40 220uF/35V connects+12V and ground wire as input filter capacitor, C38, C39 220uF/16V, L2 4.7uH/3A connects VCC and ground wire as output filter circuit, C41 470Pf connects 3 pin and the ground wire of U5 as self-oscillation electric capacity, R98 3.6K, R99 1.2K connects VCC and ground wire respectively as the 5 pin other ends of feedback sampling circuit one termination U5.The P1 of display panel meets the P1 of IC-card seat board; P2 meets the P7 of key-board or connects and left and rightly turns to, brakes and move backward indicator light switch; P3 connects key-board P5 or registration mark light switch.

The P7 of key-board meets the P2 of display panel, be defined as left and rightly turn to, brake and astern signal line; Its P8 connects and left and rightly turns to, brakes and move backward indicator light switch; Its P1 meets the P6 of display panel, is defined as the switch state signal line of multiple custom features such as flash appeal, safe term, animation effect, burglar alarm access, the access of range finding alarm; Its P3 grounding jumper; Its P4 takes over control and steals the output of annunciator contact or connect the contact output of range finding annunciator, can set by the break-make of setting J1 and J2 and insert passive often opening or the active signal of often opening, and circuit layout is for opening the read-out switch automatically when this road signal is effective; Its P5 meets the P3 of display panel, is defined as power lead and ground wire; Its P6 connects registration mark light switch or storage battery, defines same P5; The functional definition of switch S 1, S2, S3 is that flash appeal, safe term, animation effect master cock also can be defined as other functions, and S4 is the read-out source switch.

The P1 of IC-card seat board meets the P1 of display panel, is defined as power lead, ground wire, IC-card presence detection line, I2C clock line and data line.

Three. physical construction and annexation technical scheme:

Read-out housing and master cock box housing have been designed on the physical construction.The read-out housing is installed in automobile high-mount stop lamp position, and master cock box housing is installed on the auto meter panel.The technical scheme of two kinds of housings is described respectively below.

Read-out housing technologies scheme:

The read-out housing is divided into upper shell and base two large divisions, and wiring board is installed in the upper shell the inside; Design has mounting hole on the base, is used on car body fixedly read-out.Adopt the mode of turning cylinder to link between the upper shell of read-out housing and the base, can upper shell and base be fixed together by the tight screw of the hinge that screws turning cylinder two ends relative angle as required, in the bound fraction design of turning cylinder rubber pad be arranged for increasing friction force.

The structure of upper shell: upper shell comprises rubber seal, front case, filter glass, rear housing, dustproof five parts of IC-card seat of external.The rubber seal of frame type is embedded in the frame type groove around the positive viewing area of front case, and mounted seal ring can expose front case surface 2 millimeter, and filter glass is installed in the front case, and behind filter glass fixing display panel; On the rear housing design have the mounting hole that the IC-card seat is installed, anti-IC-card come off positive stop strip, connection terminal perforate, reserve infrared remote control filter window and relay indicating light LED perforate, be installed on the rear housing after having welded the deck plate on the IC-card seat.Mounted upper shell spatially is rubber seal, front case, filter glass, display panel, deck plate, rear housing, the dustproof IC-card seat of external in the past backward successively in proper order.

The assembling mode of upper shell: at first filter glass is sticked in the front case with glue, use thread-forming screw that display panel is fixed in the front case then, the deck plate is welded on the external IC-card seat afterwards, re-use the back that screw is installed in deck rear housing, bayonet socket upwards, use the P1 of five cable connection mainboards and the P1 of deck plate, use thread-forming screw that rear housing and front case are fixed together at last.The wiring hole of reserving on the rear housing can expose the connection terminal of correspondence position on the display panel.

The mounting means of read-out housing: use thread-forming screw that base is fixed on high-mount stop lamp position on the car body, the angle of regulating between upper shell and the base makes the rubber seal on the upper shell front panel be close to vehicle rear window glass to obtain outward appearance display effect preferably, use glue that the vehicle rear window interior surfaces of glass is pasted in the rubber seal sealing of upper shell, fixing read-out by the tight screw of hinge that screws on the turning cylinder with after mixing up angle.After connecting external wire at last.

Master cock box housing technologies scheme:

Master cock box housing is divided into front case and bonnet two parts, and the positive design of front case has switch hole, exposes cooresponding switch on the key-board, and key-board is fixed on the front case by the screw on the switch; Design has wiring hole and mounting hole on the bonnet, uses thread-forming screw by mounting hole bonnet to be fixed on the front case.The master cock box housing that installs wiring board spatially is front case, key-board, bonnet in the past backward successively in proper order.

The mounting means of master cock box housing: at first use the check screw on the switch that key-board is fixed on the front case, use thread-forming screw that bonnet is installed on the front case afterwards, the wiring hole of reserving on the bonnet this moment can expose the connection terminal of correspondence position on the key-board.At last, connect external wire after, use thread-forming screw master cock box housing to be fixed on gauge panel position on the car body by the mounting hole on the bonnet.

The beneficial effects of the utility model are, solved that function singleness, demonstration and decorative effect that existing automobile high-mount stop lamp, high-order steering indicating light, high-order ornament lamp product exist are poor, the power line voltage input range is narrow, power consumption big, the power supply service efficiency is low, displaying contents is directly perceived, can't dynamically show can self-defining picture-character information etc. problem, also solved the displaying contents that the traffic allowance poster exists simultaneously and outward appearance is lack of standardization, display effect is poor, show problems such as not eye-catching night.This apparatus function is abundant, except that the basic function that can realize the said goods, also has the function of automatic access car alarm alerting signal or automobile apomecometer alerting signal, be held as a hostage hidden warning function and other additional functioies.The utlity model has outward appearance standard, feature richness, intuitive display is eye-catching, the power line voltage input range is wide, the high and low power consumption of power supply service efficiency, install to regulate simple, displaying contents and display effect can use master cock and supporting IC-card to change and advantage such as expansion.Can satisfy the consumption demand of current social informatization, diversification, personalization.

The concrete technique effect of this read-out is:

Automatically picture and text display automobile left and right turn to, brake, running state such as reversing;

2. can show picture-character information automatically, content displayed can be the promotional content of fixing (for example: contents such as " please maintain safe distance "), it also can be the content that is stored in the supporting IC-card, change different IC-cards just can change displaying contents (for example: can store in the IC-card " Getting Started, please assist me in any way you can! ", civilized term or other personalized promotional content such as " new car break-in, please assist me in any way you can ");

3. can switch the content that shows fixing promotional content or IC-card storage by operation particular switch control display screen;

4. can whether adopt dynamic display effect by operation particular switch control display screen, rolling about read-out provides, scroll-up/down, about replace, replace up and down, kind of dynamic display types surplus blanking, the flicker etc. ten word for word, the dynamical fashion of displaying contents can adopt system default value also can freely be defined in the IC-card;

5. can show as " this car is held as a hostage, and please report to the police by the operation particular switch! " etc. distress signals, when vehicle is in danger, send alerting signal in hidden mode;

6. corresponding on off state indicator lamp of each switch on the key-board provides operational feedback demonstration intuitively to prevent maloperation;

7. can insert the alerting signal of car alarm automatically, read-out Auto Power On after receiving alerting signal, and show automatically as " warning! Someone steals car! " wait the picture and text alarm message; Also can insert the automotive distance-measuring radar alerting signal automatically, after receiving alerting signal automatically rearwards adjacent vehicle show that " spacing is near excessively! Please remain a safe distance behind the car in front! " wait the picture and text shows signal.This warning acceptor circuit design of read-out has wire jumper can set passive often the opening or the active alerting signal of often opening two types of reception for, guarantees compatible multiple car alarm and automobile range finding annunciator;

8. the displaying contents priority is as follows: kidnap to report to the police, anti-theft alarm, range finding is reported to the police, reversing, brake, about turn to the content of storing in the IC-card, fixedly promotional content.The content of high priority preferentially shows;

9. as adopting three look display modules or color display module, then the color of its graph-text content can change according to driving states, as when left rotaring signal is effective, the left-hand rotation arrow of Alternation Display yellow and " left-hand rotation " printed words, when brake signal is effective, read-out Alternation Display red colored lamp is all lighted and " brake " printed words, shows green picture-character information when normally driving a vehicle;

10. adopt DC-DC Switching Power Supply design plan, guaranteed read-out can be in 10 volts～30 volts wide power input voltage range normal operation, improved power-efficient greater than 80%, reduced system power dissipation simultaneously;

11. the design of the driving states signal receiving circuit of read-out has wire jumper, can set the signal compatibility 12V and the 24V of reception, guarantees that this read-out can be applied in the automobile of multiple model;

12. read-out design has the hardware watchdog circuit, the software design has software to run to fly trap, guarantees that read-out can smooth operation;

13. read-out is placed with common mode inductance, magnetic bead and large bulk capacitance at the power import place, all is placed with decoupling capacitance in addition near each integrated circuit, guarantees that system has good electromagnetic compatibility and other mobile unit can not interfere with each other;

14. the utility model design has the product of multiple model, for example the size according to the screen dot matrix can be divided into 16 * 16 dot matrix screen, 32 * 16 dot matrix screen and 64 * 16 dot matrix screens etc., glow color according to the display module that adopts can be divided into monochromatic screen, three looks screen and color line screen etc., can satisfy the demand of user's variation, personalization.

15. the read-out housing structure is designed to adjust the turning cylinder mode at the read-out elevation angle, the design of turning cylinder two ends has rubber pad and the tight screw of hinge, and installation is regulated simple and convenient.

16. have the anti-IC-card positive stop strip that comes off in the read-out housing structure design, can prevent effectively that IC-card comes off in the driving process of jolting.

17. the design of read-out housing structure is gone up and in the front rubber seal is installed, and closely sticks on during installation on the vehicle window, can increase the firm degree that read-out is installed, and guarantees good display effect simultaneously.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is the facing of the utility model read-out housing, backsight, side-looking and birds-eye view;

Fig. 2 is the application side view and the read-out turning cylinder disassembly diagram of read-out housing;

Fig. 3 is the disassembly diagram of read-out upper shell;

Fig. 4 is the longitudinal diagram of read-out housing;

Fig. 5 is the facing of the utility model master cock box housing, backsight, birds-eye view, side-looking and longitudinal diagram;

Fig. 6 is the installation wiring schematic diagram of read-out and master cock box;

Fig. 7 is the control circuit schematic diagram of the utility model display panel;

Fig. 8 is the demonstration and the driving circuit schematic diagram of the utility model display panel;

Fig. 9 is the schematic circuit diagram of the utility model key-board and IC-card seat board;

The front elevation of 1-1. read-out housing among Fig. 1; 1-2. the lateral plan of read-out housing; 1-3. the back view of read-out housing; 1-4. the birds-eye view of read-out housing.Wherein mark 1. upper shells, 2. base, 3. front case, 4. rear housing, 5. filter glass, 6. rubber seal, 7. the dustproof IC-card seat of external, 8. anti-IC-card come off positive stop strip, 9. connection terminal, 10. turning cylinder cuts with scissors tight screw, 11. rubber pads, 12. relay indicating light holes, 13. infrared remote control filter window, 14. the fixing thread-forming screw of rear housing, 15. fixedly the order of read-out attack screw, the 16.IC card.

Application side view when 2-1. is adjusted into 45 degree angles with the upper shell of read-out and base among Fig. 2; Fig. 2-2 is a part scheme drawing after the read-out turning cylinder is disassembled to 2-5,2-2. upper shell wherein, and 2-3. rubber pad, 2-4. cut with scissors tight screw, the 2-5. base.

Among Fig. 3 the part scheme drawing after the read-out upper shell is disassembled, 3-1. front case wherein, 3-2. rubber seal, 3-3. rear housing, 3-4. filter glass, the 3-5. external IC-card seat that prevents dust.Wherein mark 17.IC deck mounting hole, 18.IC deck wiring hole, 19. rear housing mounting holes, 20. connection terminal holes.

The profile position scheme drawing of 4-1. read-out housing is vertically cut open along long and short dash line among Fig. 4, the longitudinal diagram of 4-2. read-out housing; Wherein mark the connecting cable between 21.IC deck and the display panel, the 22.LED display module, 23. circuit plates, 24.IC deck wiring board, all the other marks are with the explanation of above-mentioned Fig. 1 to Fig. 3.

The front elevation of 5-1. master cock box housing among Fig. 5; 5-2. the back view of master cock box housing; 5-3. the birds-eye view of master cock box housing; 5-4. the lateral plan of master cock box housing; 5-5. the longitudinal diagram of master cock box housing.Wherein mark 25. master cock box bonnets, 26. master cock box front cases, 27. on off state indicator lamps, 28. switch, 29. master cock box self-tapping screw mounting holes, 30. key-board connection terminals, 31. master cock box bonnet self-tapping screw mounting hole, 32. switching circuit plates.

6-1. read-out and the scheme of installation of master cock box on automobile among Fig. 6; 6-2. the master cock box is installed in local enlarged diagram on the instrument face plate; 6-3. read-out is installed in the local enlarged diagram of vehicle rear window.Wherein mark 33. car bodies, 34. glasss for vehicle window, 35. car alarms or apomecometer, 36. master cock boxes, 37. read-outs, 38. leads, 39. storage batterys, 40. car lights.

U1 78E58 micro controller system among Fig. 7, U33 74HC245, U4 74HC373, U23 74HC138, U29 29C040, U24 62256, U2 74HC154, U3 74HC157, U5 MC34063, U22 813L.

U6, U7 74HC373 among Fig. 8, U14, U15 74HC245, T1-T16 TIP127, LED1-LED4 8 * 8LED module.

9-1. key-board schematic circuit diagram among Fig. 9,9-2.IC deck plate schematic circuit diagram.

The specific embodiment

In Fig. 1, the facing of read-out housing, backsight, side-looking and birds-eye view are provided.The read-out housing is divided into upper shell (1) and base (2) two large divisions, and design has four mounting holes (15) on the base, is used on car body fixedly read-out.Upper shell is made up of front case (3) and rear housing (4), and sealing rubber ring (6) and filter glass (5) are installed on the front case, and display panel also is installed in the front case in addition.The dustproof IC-card seat (7) of external is installed on the rear housing, design have anti-IC-card come off positive stop strip (8), connection terminal perforate (9), reserve infrared remote control filter window (13), work LED light hole (12) and four rear housing mounting holes (14).Housing and base adopt the mode of turning cylinder to link, and by the tight screw of the hinge that screws the turning cylinder two ends (10) relative angle as required upper shell and base are fixed together, and in the bound fraction design of turning cylinder rubber pad (11) are arranged for increasing friction force.

In Fig. 2, the application side view when 2-1. provides the turning cylinder with the upper shell of read-out and base to be adjusted into miter angle; Fig. 2-2 is a part scheme drawing after the read-out turning cylinder is disassembled to 2-5,2-2. upper shell wherein, and 2-3. rubber pad, 2-4. cut with scissors tight screw, the 2-5. base.

In Fig. 3, be the part scheme drawing after the read-out upper shell is disassembled, 3-1. front case wherein, 3-2. rubber seal, 3-3. rear housing, 3-4. filter glass, the 3-5. external IC-card seat that prevents dust.The assembling mode of upper shell is: at first sealing rubber ring (6) is embedded in the frame type groove all around of the positive viewing area of front case (3), cements with glue.Filter glass (5) is sticked in the front case, use thread-forming screw that display panel is fixed in the front case then, the deck plate is welded on the IC-card seat (7) afterwards, re-use the back that screw is installed in deck rear housing (4), bayonet socket upwards, use the P1 of five cable connection mainboards and the P1 of deck plate, use thread-forming screw that rear housing and front case are fixed together at last.Relay indicating light can be exposed in relay indicating light hole on the rear housing, and the connection terminal of correspondence position on the display panel can be exposed in the connection terminal hole.

In Fig. 4, the longitudinal diagram of read-out housing is provided, rubber seal (6) is embedded in the frame type groove all around of the positive viewing area of front case (3), and mounted seal ring exposes front case surface 2 millimeter; Filter glass (5) is installed in the front case; Behind filter glass, use thread-forming screw to be fixed with display panel (23); Having welded deck plate (24) on the IC-card seat (7) is installed on the rear housing (4) afterwards; Mounted upper shell (1) is rubber seal, front case, filter glass, display panel, deck plate, rear housing, IC-card seat structurally in the past backward successively in proper order; Mounted read-out is the tight screw of upper shell, rubber pad and hinge, base from the top down successively in proper order structurally.

In Fig. 5, the facing of master cock box housing, backsight, birds-eye view, side-looking and longitudinal diagram are provided.Master cock box housing is divided into front case (26) and bonnet (25) two parts, and the positive design of front case perforate is exposed key-board (32) and gone up cooresponding switch (28) and on off state indicator lamp (27), and key-board is fixed on the front case by the screw on the switch; Design has wiring hole (30) and mounting hole (29) and (31) on the bonnet, uses thread-forming screw by mounting hole bonnet to be fixed on the front case, the master cock box is fixed on the car body.The assembling mode of master cock box housing: at first use the check screw on the switch that key-board is fixed on the front case, use thread-forming screw that bonnet is installed on the front case afterwards, the wiring hole of reserving on the bonnet this moment can expose the connection terminal of correspondence position on the key-board.The master cock box housing that assembles structurally is followed successively by front case, key-board, bonnet in the past backward in proper order.

In Fig. 6, provide read-out and master cock box to be installed on the instrument face plate and read-out is installed in local enlarged diagram on the vehicle rear window at the scheme of installation on the automobile, master cock box.The mounting means of read-out: the angle of regulating between upper shell (1) and the base (2) makes the rubber seal (6) on the upper shell front panel be close to glass for vehicle window (34) upward to obtain outward appearance display effect preferably, use thread-forming screw that base is fixed on high-mount stop lamp position on the car body, use glue that the vehicle rear window interior surfaces of glass is pasted in the rubber seal sealing of upper shell, screw hinge tight screw (10) fixed bias circuit angle.At last, connect external wire; The mounting means of master cock box: after connecting external wire, use thread-forming screw master cock box housing to be fixed on gauge panel position on the car body by the mounting hole on the bonnet (25).

In Fig. 7, be the schematic diagram of display panel control circuit.Use the address bus of 51 serial compatible micro controller systems, the extended mode circuit of data bus.Adopting U1 78E58 micro controller system is main control CPU, U33 74HC245 is a bus driver, U4 74HC373 is the low order address latch, U23 74HC138 is the column selection decoder, U29 29C040FLASH memory device is as the data memory that extends out character library, U24 62256 RAM memory devices are as extending out data memory, U2 74HC154 selects decoder for row, U3 74HC157 is the incoming signal gate, U5 MC34063 is the Switching Power Supply control chip, and U22 813L is a watchdog chip, T17, L3, L4, C28, C29 forms the EMI input filter circuit, M1 IRF9340 metal-oxide-semiconductor is for expanding the stream pipe, and D1 MBR1045 is a flywheel diode.Working process: data, read switch state and the driving states incoming signal that reads IC-card carried out in the micro controller system circulation, determines mode of operation and real content, tasks such as dynamic scan read-out according to parameter of setting in the IC-card or incoming signal.Wherein definite displaying contents need be searched character library, puts in order out and wants content displayed to write the RAM buffer memory.The display method of dynamic scan: type matrix of certain row is write corresponding column register one by one, this row of gating then, blanking after the time-delay, gating next line in the same way again, circulation is carried out and is got final product.

In Fig. 8, be the schematic diagram of read-out demonstration and driving circuit.U6, U7 74HC373 are the row latch, and U14, U1574HC245 are row driver, and T1-T16 TIP127 is 16 capable driving tubes, and LED1-LED4 is 48 * 8 a led module.For reducing the length clarity, this figure has only exemplified the demonstration and the driving circuit of a monochromatic Chinese word character dot matrix screen (16 * 16 dot matrix screen), only need expand corresponding row latch, row driver and led module in proportion according to needed Chinese character and color sum and can realize for many Chinese character screens and three looks screen, color line screen.

In Fig. 9,9-1 is the schematic diagram of key-board, and its P7 meets the P2 of display panel, be defined as left and rightly turn to, brake and astern signal line; Its P8 connects and left and rightly turns to, brakes and move backward indicator light switch; Its P1 meets the P6 of display panel, is defined as the switch state signal line of multiple custom features such as flash appeal, safe term, animation effect, burglar alarm access, the access of range finding alarm; Its P3 power connection ground wire; Its P4 takes over control and steals the output of annunciator contact or connect the output of range only radar alarm actuating contact, can set by the break-make of setting J1 and J2 and insert passive often opening or the active signal of often opening, and circuit layout is for opening the read-out switch automatically when this road signal is effective; Its P5 meets the P3 of display panel, is defined as power lead and ground wire; Its P6 connects registration mark light switch or storage battery, defines same P5; The function of switch S 1, S2, S3 can freely define, and S4 is the read-out source switch.9-2 is the schematic diagram of IC-card seat board, and its P1 meets the P1 of display panel, is defined as power lead, ground wire, IC-card presence detection line, I2C clock line and data line.

Claims (7)

1. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control, form by read-out and master cock box, read-out comprises several N * N point matrix LED display module and driving circuit thereof, it is characterized by: read-out is controlled by single chip circuit, has the IC-card interface circuit, the FLASH memory device, data memory RAM, the low order address latch, bus driver, row gated decoder and line-scanning drive circuit, the row gated decoder, row display data latch and column scan driving circuit, switch and driving states signal input circuit, above circuit is connected to the IO mouth of micro controller system, on address bus and the data bus, signal input part is connected the master cock that carries and the left side of automobile, right steering, brake, on the reversing indicator light switch, read-out also has watchdog circuit, the DC-DC switching power circuit, the EMI electric source filter circuit, insert car alarm alerting signal automatic boot circuit; Master cock has cooresponding status indicator lamp.

2. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1, it is characterized by: its N * N point matrix LED display module can be monochrome, three looks or colored module, can realize the read-out of different demonstration scales and display effect according to needed Chinese character and color sum extension columns latch, row driver and display module.

3. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1, it is characterized by: the supporting shell filling of read-out has the external IC-card seat that prevents dust, the Position Design of inserting IC-card has the anti-IC-card positive stop strip that comes off, the positive design of read-out has rubber seal, unit design becomes can freely adjust the turning cylinder mode at the read-out elevation angle, the design of turning cylinder two ends has rubber pad and the tight screw of hinge, read-out is a rubber seal structurally in the past backward successively in proper order, front case, filter glass, the circuit plate, IC-card seat wiring board, rear housing, the IC-card seat, order is a upper shell successively from the top down, rubber pad and the tight screw of hinge, base.

4. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1 is characterized by: its master cock box housing structurally is front case, key-board, bonnet in the past backward successively in proper order.

5. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1 is characterized by: its auto alarm signal receiving circuit can be set for and receive passive often opening or the active alerting signal of often opening two types.

6. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1 is characterized by: its driving states signal receiving circuit can be set for and receive 12V signal and 24V signal.

7. the extendible IC-card formula Vehicular multifunctional graph display screen of switch control according to claim 1 is characterized by: its supporting use memory-type IC-card, IC-card storage displaying contents and display effect parameter.

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