CN105161041A - Bit-expandable *-shaped nixie tube driving system and digital video parsing system - Google Patents
Bit-expandable *-shaped nixie tube driving system and digital video parsing system Download PDFInfo
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- CN105161041A CN105161041A CN201510543854.9A CN201510543854A CN105161041A CN 105161041 A CN105161041 A CN 105161041A CN 201510543854 A CN201510543854 A CN 201510543854A CN 105161041 A CN105161041 A CN 105161041A
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Abstract
The invention is suitable for the technical field of digital driving, and provides a bit-expandable *-shaped nixie tube driving system. The *-shaped nixie tube driving system comprises a nixie tube module, a driving module, an indicating lamp module, a current enhancement module and a power supply module. The output end of the driving module is connected with the input end of the nixie tube module. The output end of the driving module is connected with the input end of the indicating lamp module. The output end of the driving module is connected with the input end of the current enhancement module. The output end of the current enhancement module is connected with the input end of the nixie tube module. The power supply module is electrically connected with the nixie tube module, the driving module, the indicating lamp module and the current enhancement module A series logic IC is adopted to drive the *-shaped nixie tube so that the structure is simple, cost is reduced, stability and compatibility are enhanced, expandability is high and control logic is simplified.
Description
Technical field
Digital Driving technique field, the field that the present invention relates to, particularly relates to figure place prolongable rice alphanumeric code tube driving system and digital video resolution system.
Background technology
Household electrical appliance often adopt charactron to show its running status, and such as air conditioner often needs charactron to come displays temperature, running status, failure code etc., generally adopts dibit (or multidigit) charactron to show.In prior art, driving circuit and the charactron internal circuit of dibit charactron are more ripe, and Nixie tube drive circuit is made up of anode driving circuit 100, negative electrode driving circuit 200.Wherein: the simulation Darlington transistor that positive C OM1, the COM2 of charactron 300 end be made up of 4 triodes, 8 resistance drives, and needs 2 chip I/O control; Cathode terminal A, B, C, D, E, F, G, DP are driven by ULN2003 chip U2 and triode Q1, execute turntable driving realize by 8 I/O causes for gossip of main control chip U1.Existing Nixie tube drive circuit, cathodic control end takies too many chip I/O mouth resource, and main control chip need select the chip of higher cost, is unfavorable for the cost control of household electrical appliance.
At present, 8bitMCUSTM8S003K3 drives 11 14 sections rice alphanumeric code pipes, has the circuit structure increasing triode to realize for strengthening driving force.
Current single rice alphanumeric code pipe amounts to 14 sections, its predominate architecture as shown in Figure 1, if there is multidigit to show, 14 of then common sections, only increase the driving of position, as the formation of 8, as shown in Figure 2,14 sections of 14 diode common anode [also can be common cathode] used form a position, and figure place more rice alphanumeric code pipe, structure is analogized according to this.
It is 8 alphanumeric code pipes within 4 that Vehicles Collected from Market uses maximum, the structure of all similar CT1642 of drive IC of use.Its essence is that 18 bit serial inputs turn 12 bit parallel bands latch ternary output shift registers, as shown in Figure 3.
At present, not more than 18 bit shift register for driving the integrated IC of multidigit multiple stage display part, drive 14 sections, 8 rice alphanumeric code Guan Ze at least need 24 [driving of 2 containing displaying time] shift registers, even if adopt 2 class CT1642 tandem drives, because CT1642 is without Serial output, cannot meet the demands, and cost is high.That existing patent adopts is the preferred STM8S003K3 of 8bitMCU() drive, but one side MCU cost intensive, and be subject to the quantitative limitation of driving force I/O number, cannot expand the display to multidigit rice alphanumeric code pipe or series connection, then cost is higher.
Summary of the invention
In order to solve the problems of the prior art, the invention provides a kind of figure place prolongable rice alphanumeric code tube driving system.
The present invention realizes like this, a kind of figure place prolongable rice alphanumeric code tube driving system, this meter of alphanumeric code tube driving system comprises charactron module, driver module, indicating lamp module, intensifying current module and supply module, the output terminal of described driver module connects the input end of described charactron module, the output terminal of described driver module connects the input end of described indicating lamp module, the output terminal of described driver module connects the input end of described intensifying current module, the output terminal of described intensifying current module connects the input end of described charactron module, described supply module is electrically connected described charactron module, driver module, indicating lamp module and intensifying current module.
Further technical scheme of the present invention is: this drive system also comprises interface module, described interface module connects described driver module two-way communication, described interface module comprises connection terminal J1 and electric capacity C2,3rd pin of described connection terminal J1 connects the positive pole of described electric capacity C2 and the lead-out terminal 5V of described supply module, the minus earth of described electric capacity C2 respectively.
Further technical scheme of the present invention is: described driver module comprises the first driver element, second driver element and the 3rd driver element, described first driver element, second driver element and the 3rd driver element are connected successively, and described first driver element comprises chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R12 and electric capacity C1, 1st pin of described chip U1 connects one end of described resistance R1, 2nd pin of described chip U1 connects one end of described resistance R2, 3rd pin of described chip U1 connects one end of described resistance R3, 4th pin of described chip U1 connects one end of described resistance R4, 5th pin of described chip U1 connects one end of described resistance R5, 6th pin of described chip U1 connects one end of described resistance R6, 7th pin of described chip U1 connects one end of described resistance R7, 11st pin of described chip U1 connects one end of described resistance R10, 12nd pin of described chip U1 connects one end of described resistance R12, 14th pin of described chip U1 connects one end of described resistance R9, 15th pin of described chip U1 connects one end of described resistance R8, 16th pin of described chip U1 connect respectively supply module lead-out terminal 5V and through described electric capacity C1 ground connection, 10th pin of described chip U1 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U1, the equal ground connection of 8 pin, described second driver element comprises chip U2, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R24 and electric capacity C5, 1st pin of described chip U2 connects one end of described resistance R13, 2nd pin of described chip U2 connects one end of described resistance R14, 3rd pin of described chip U2 connects one end of described resistance R15, 4th pin of described chip U2 connects one end of described resistance R16, 5th pin of described chip U2 connects one end of described resistance R17, 6th pin of described chip U2 connects one end of described resistance R18, 7th pin of described chip U2 connects one end of described resistance R19, 11st pin of described chip U2 connects one end of described resistance R22, 12nd pin of described chip U2 connects one end of described resistance R24, 14th pin of described chip U2 connects one end of described resistance R21, 15th pin of described chip U2 connects one end of described resistance R20, 16th pin of described chip U2 connect respectively supply module lead-out terminal 5V and through described electric capacity C5 ground connection, 10th pin of described chip U2 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U2, the equal ground connection of 8 pin, the other end of described resistance R21 connects the 9th pin of described chip U1, described 3rd driver element comprises chip U3, resistance R60, resistance R59, resistance R61, resistance R62 and electric capacity C7, described chip U3 the 11st pin connects one end of described resistance R60, 12nd pin of described chip U3 connects one end of described resistance R62, 14th pin of described chip U3 connects one end of described resistance R59, 15th pin of described chip U3 connects one end of described resistance R61, 16th pin of described chip U3 connect respectively described supply module lead-out terminal 5V and through described electric capacity C7 ground connection, 10th pin of described chip U3 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U3, the equal ground connection of 8 pin, the other end of described resistance R59 connects the 9th pin of described chip U2.
Further technical scheme of the present invention is: described intensifying current module comprises the first enhancement unit, second enhancement unit, 3rd enhancement unit, 4th enhancement unit, 5th enhancement unit, 6th enhancement unit, 7th enhancement unit and the 8th enhancement unit, described first enhancement unit, second enhancement unit, 3rd enhancement unit, 4th enhancement unit, 5th enhancement unit, 6th enhancement unit, 7th enhancement unit and the 8th enhancement unit be parallel to be arranged and identical, it comprises triode Q1, resistance R76 and resistance R77, the base stage of described triode Q1 connects one end of described resistance R76, the other end of described resistance R76 connects the output terminal of described driver module and one end of resistance R77 respectively, the other end and the emitter of described triode Q1 of described resistance R77 are connected the lead-out terminal 5V of described supply module respectively.
Further technical scheme of the present invention is: described indicating lamp module comprises light emitting diode D6, light emitting diode D5, triode Q24, resistance R93, resistance R91 and resistance 90, the base stage of described triode Q24 connects one end of described resistance R91, the other end of described resistance R91 connects one end of described resistance R93 and the other end of resistance R19 respectively, the other end of described resistance R93 is through described light emitting diode D6 ground connection, the collector of described triode Q24 connects one end of described resistance R90 and the anode of light emitting diode D5 respectively, the other end of described resistance R90 connects the lead-out terminal 5V of described supply module.
Further technical scheme of the present invention is: the chip model that described chip U1, chip U2, chip U3 all adopt is 74HC595.
Further technical scheme of the present invention is: described charactron module comprises 8 rice alphanumeric code pipes and resistance R92, one end of described resistance R92 connects the 24th pin of described 8 rice alphanumeric code pipes, and the other end of described resistance R92 connects the lead-out terminal 5V of described supply module.
Another object of the present invention is to provide a kind of digital video resolution system, described digital video resolution system comprises the rice alphanumeric code tube driving system described in claim 2-7, central processing unit, button detecting unit, video signal unit, interface unit and remote control receiver unit, described rice alphanumeric code tube driving system connects described interface unit two-way communication, described interface unit connects described central processing unit two-way communication, described video signal unit connects described central processing unit two-way communication, the input end of described button detecting unit connects the output terminal of described rice alphanumeric code tube driving system, the output terminal of described remote control receiver unit connects the input end of described interface unit, the output terminal of described button detecting unit connects the input end of described interface unit, described central processing unit, video signal unit and interface unit are electrically connected described supply module respectively.
Further technical scheme of the present invention is: described button detecting unit comprises keyswitch SW1, keyswitch SW2, keyswitch SW3, keyswitch SW4, keyswitch SW5, keyswitch SW6, keyswitch SW7 and resistance RR54, the 2nd of described keyswitch SW1, 4 pin, the 2nd of keyswitch SW2, 4 pin, the 2nd of keyswitch SW3, 4 pin, the 2nd of keyswitch SW4, 4 pin, the 2nd of keyswitch SW5, 4 pin, the 2nd of keyswitch SW6, 4 pin, the 2nd of keyswitch SW7, 4 pin connect respectively described connection terminal J1 the 2nd pin and through described resistance R54 ground connection, the 1st of described keyswitch SW1, 3 pin connect the other end of described resistance R8, the 1st of described keyswitch SW2, 3 pin connect the other end of described resistance R1, the 1st of described keyswitch SW3, 3 pin connect the other end of described resistance R2, the 1st of described keyswitch SW4, 3 pin connect the other end of described resistance R3, the 1st of described keyswitch SW5, 3 pin connect the other end of described resistance R4, the 1st of described keyswitch SW6, 3 pin connect the other end of described resistance R5, the 1st of described keyswitch SW7, 3 pin connect the other end of described resistance R6.
Further technical scheme of the present invention is: described remote control receiver unit comprises remote control reception head U4, resistance R29 and electric capacity C12,1st pin of described remote control reception head U4 connects the positive pole of described electric capacity C12 and one end of resistance R29 respectively, the other end of described resistance R29 connects the lead-out terminal 5V of described supply module, 2nd pin of described remote control reception head U4 and the equal ground connection of negative pole of electric capacity C12, the 2nd pin of described remote control reception head U4 connects the 5th pin of described connection terminal J1.
The invention has the beneficial effects as follows: adopt concatenating logic IC to drive rice alphanumeric code pipe, structure is simple, reduce cost, improve stability with compatible, expansion is strong, and steering logic is simplified.Rice alphanumeric code pipe, generic logic IC and the conventional electric power system that common luminescent pipe diode can be adopted to form carry out the function of real VFD display system, greatly reduce cost.Adopt the mode of shift register to drive numeral method, improve stability with compatible, can expand to more than 8 rice alphanumeric code pipes; Display and button adopt time-multiplexed mode, key number easily extensible; The display of charactron adopts dynamic driving mode, reduces power consumption.
Accompanying drawing explanation
Fig. 1 is the predominate architecture schematic diagram that single rice alphanumeric code pipe amounts to 14 sections;
Fig. 2 is the structural representation of 8 display common sections 14;
Fig. 3 is that 18 bit serial inputs turn 12 bit parallel bands latch ternary output shift register schematic diagram;
Fig. 4 is the electrical schematic diagram of the first driver element that the embodiment of the present invention provides;
Fig. 5 is the electrical schematic diagram of the second driver element that the embodiment of the present invention provides;
Fig. 6 is the electrical schematic diagram of the 3rd driver element that the embodiment of the present invention provides;
Fig. 7 is the electrical schematic diagram of the intensifying current module that the embodiment of the present invention provides;
Fig. 8 is the electrical schematic diagram of the charactron module that the embodiment of the present invention provides;
Fig. 9 is the electrical schematic diagram of the indicating lamp module that the embodiment of the present invention provides;
Figure 10 is the electrical schematic diagram of the interface module that the embodiment of the present invention provides;
Figure 11 is the electrical schematic diagram of the button detecting unit that the embodiment of the present invention provides;
Figure 12 is the electrical schematic diagram of the remote control receiver unit that the embodiment of the present invention provides
Figure 13 is the structured flowchart of the rice alphanumeric code tube driving system that the embodiment of the present invention provides;
Figure 14 is the structured flowchart of the digital video resolution system that the embodiment of the present invention provides.
Embodiment
Fig. 4-10, 13 show figure place provided by the invention prolongable rice alphanumeric code tube driving system, this meter of alphanumeric code tube driving system comprises charactron module, driver module, indicating lamp module, intensifying current module and supply module, the output terminal of described driver module connects the input end of described charactron module, the output terminal of described driver module connects the input end of described indicating lamp module, the output terminal of described driver module connects the input end of described intensifying current module, the output terminal of described intensifying current module connects the input end of described charactron module, described supply module is electrically connected described charactron module, driver module, indicating lamp module and intensifying current module.Adopt concatenating logic IC to drive rice alphanumeric code pipe, structure is simple, reduce cost, improve stability with compatible, expansion is strong, and steering logic is simplified.
This drive system also comprises interface module, described interface module connects described driver module two-way communication, described interface module comprises connection terminal J1 and electric capacity C2,3rd pin of described connection terminal J1 connects the positive pole of described electric capacity C2 and the lead-out terminal 5V of described supply module, the minus earth of described electric capacity C2 respectively.
Described driver module comprises the first driver element, second driver element and the 3rd driver element, described first driver element, second driver element and the 3rd driver element are connected successively, and described first driver element comprises chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R12 and electric capacity C1, 1st pin of described chip U1 connects one end of described resistance R1, 2nd pin of described chip U1 connects one end of described resistance R2, 3rd pin of described chip U1 connects one end of described resistance R3, 4th pin of described chip U1 connects one end of described resistance R4, 5th pin of described chip U1 connects one end of described resistance R5, 6th pin of described chip U1 connects one end of described resistance R6, 7th pin of described chip U1 connects one end of described resistance R7, 11st pin of described chip U1 connects one end of described resistance R10, 12nd pin of described chip U1 connects one end of described resistance R12, 14th pin of described chip U1 connects one end of described resistance R9, 15th pin of described chip U1 connects one end of described resistance R8, 16th pin of described chip U1 connect respectively supply module lead-out terminal 5V and through described electric capacity C1 ground connection, 10th pin of described chip U1 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U1, the equal ground connection of 8 pin, described second driver element comprises chip U2, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R24 and electric capacity C5, 1st pin of described chip U2 connects one end of described resistance R13, 2nd pin of described chip U2 connects one end of described resistance R14, 3rd pin of described chip U2 connects one end of described resistance R15, 4th pin of described chip U2 connects one end of described resistance R16, 5th pin of described chip U2 connects one end of described resistance R17, 6th pin of described chip U2 connects one end of described resistance R18, 7th pin of described chip U2 connects one end of described resistance R19, 11st pin of described chip U2 connects one end of described resistance R22, 12nd pin of described chip U2 connects one end of described resistance R24, 14th pin of described chip U2 connects one end of described resistance R21, 15th pin of described chip U2 connects one end of described resistance R20, 16th pin of described chip U2 connect respectively supply module lead-out terminal 5V and through described electric capacity C5 ground connection, 10th pin of described chip U2 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U2, the equal ground connection of 8 pin, the other end of described resistance R21 connects the 9th pin of described chip U1, described 3rd driver element comprises chip U3, resistance R60, resistance R59, resistance R61, resistance R62 and electric capacity C7, described chip U3 the 11st pin connects one end of described resistance R60, 12nd pin of described chip U3 connects one end of described resistance R62, 14th pin of described chip U3 connects one end of described resistance R59, 15th pin of described chip U3 connects one end of described resistance R61, 16th pin of described chip U3 connect respectively described supply module lead-out terminal 5V and through described electric capacity C7 ground connection, 10th pin of described chip U3 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U3, the equal ground connection of 8 pin, the other end of described resistance R59 connects the 9th pin of described chip U2.
Described intensifying current module comprises the first enhancement unit, the second enhancement unit, the 3rd enhancement unit, the 4th enhancement unit, the 5th enhancement unit, the 6th enhancement unit, the 7th enhancement unit and the 8th enhancement unit, and described first enhancement unit, the second enhancement unit, the 3rd enhancement unit, the 4th enhancement unit, the 5th enhancement unit, the 6th enhancement unit, the 7th enhancement unit and the 8th enhancement unit be parallel to be arranged and identical.
Described first enhancement unit comprises triode Q1, resistance R76 and resistance R77, the base stage of described triode Q1 connects one end of described resistance R76, the other end of described resistance R76 connects the output terminal of described driver module and one end of resistance R77 respectively, and the other end and the emitter of described triode Q1 of described resistance R77 are connected the lead-out terminal 5V of described supply module respectively.
Described second enhancement unit comprises triode Q2, resistance R78 and resistance R79, the base stage of described triode Q2 connects one end of described resistance R78, the other end of described resistance R78 connects the output terminal of described driver module and one end of resistance R79 respectively, and the other end and the emitter of described triode Q2 of described resistance R79 are connected the lead-out terminal 5V of described supply module respectively.
Described 3rd enhancement unit comprises triode Q3, resistance R39 and resistance R40, the base stage of described triode Q3 connects one end of described resistance R39, the other end of described resistance R39 connects the output terminal of described driver module and one end of resistance R40 respectively, and the other end and the emitter of described triode Q3 of described resistance R40 are connected the lead-out terminal 5V of described supply module respectively.
Described 4th enhancement unit comprises triode Q4, resistance R80 and resistance R81, the base stage of described triode Q4 connects one end of described resistance R80, the other end of described resistance 80 connects the output terminal of described driver module and one end of resistance R81 respectively, and the other end and the emitter of described triode Q4 of described resistance R81 are connected the lead-out terminal 5V of described supply module respectively.
Described 5th enhancement unit comprises triode Q5, resistance R82 and resistance R83, the base stage of described triode Q5 connects one end of described resistance R82, the other end of described resistance R82 connects the output terminal of described driver module and one end of resistance R83 respectively, and the other end and the emitter of described triode Q5 of described resistance R83 are connected the lead-out terminal 5V of described supply module respectively.
Described 6th enhancement unit comprises triode Q6, resistance R84 and resistance R85, the base stage of described triode Q6 connects one end of described resistance R84, the other end of described resistance R84 connects the output terminal of described driver module and one end of resistance R85 respectively, and the other end and the emitter of described triode Q6 of described resistance R85 are connected the lead-out terminal 5V of described supply module respectively.
Described 7th enhancement unit comprises triode Q7, resistance R86 and resistance R87, the base stage of described triode Q7 connects one end of described resistance R86, the other end of described resistance R86 connects the output terminal of described driver module and one end of resistance R87 respectively, and the other end and the emitter of described triode Q7 of described resistance R87 are connected the lead-out terminal 5V of described supply module respectively.
Described 8th enhancement unit comprises triode Q8, resistance R88 and resistance R89, the base stage of described triode Q8 connects one end of described resistance R88, the other end of described resistance R88 connects the output terminal of described driver module and one end of resistance R89 respectively, and the other end and the emitter of described triode Q8 of described resistance R89 are connected the lead-out terminal 5V of described supply module respectively.
Described indicating lamp module comprises light emitting diode D6, light emitting diode D5, triode Q24, resistance R93, resistance R91 and resistance 90, the base stage of described triode Q24 connects one end of described resistance R91, the other end of described resistance R91 connects one end of described resistance R93 and the other end of resistance R19 respectively, the other end of described resistance R93 is through described light emitting diode D6 ground connection, the collector of described triode Q24 connects one end of described resistance R90 and the anode of light emitting diode D5 respectively, and the other end of described resistance R90 connects the lead-out terminal 5V of described supply module.
The chip model that described chip U1, chip U2, chip U3 all adopt is 74HC595.
Described charactron module comprises 8 rice alphanumeric code pipes and resistance R92, and one end of described resistance R92 connects the 24th pin of described 8 rice alphanumeric code pipes, and the other end of described resistance R92 connects the lead-out terminal 5V of described supply module.
The display of 8 rice alphanumeric code pipes is driven by the figure place expanding SI PO shift register.
8 rice alphanumeric code pipes, totally 24 pins will control, 14 sections+8+2, and wherein 2 is that the colon of read clock will control, at least 2.
Adopt the logic gate of 74 series to realize.Preferred 74HC595 serial chip, its 8 bit serial inputs, and turns the shift register that parallel band latches ternary output and Serial output.
Wherein 14 for driving 14 sections of meter alphanumeric code pipe, 2 for driving 2 points of clock display, other 8 for driving position.Because the position of 1 charactron is the common pole (i.e. negative electrode or anode) of 14 light emitting diodes, the drive current that needs provide is exactly the electric current of driving 14 diodes, beyond the driving force of 74 logic IC, therefore increase the triode strengthening drive current, what its triode adopted is PNP type triode, and its model is S8550.
The base stage of the output signal control S8550 of 74HC595, the collector of S8550 removes the common anode pin driving rice alphanumeric code pipe.S8550 cut-off during high level, rice alphanumeric code pipe does not show; During low level, make S8550 conducting, collector current is β times [the DC current gain of S8550, representative value is greater than 50 times] of base current, makes the current driving ability of 74HC595 enhance β doubly, can meet the electric current of needs during the display of rice alphanumeric code pipe completely.
Figure 11, 12, 14 show and another object of the present invention is to provide a kind of digital video resolution system, described digital video resolution system comprises the rice alphanumeric code tube driving system described in claim 2-7, central processing unit, button detecting unit, video signal unit, interface unit and remote control receiver unit, described rice alphanumeric code tube driving system connects described interface unit two-way communication, described interface unit connects described central processing unit two-way communication, described video signal unit connects described central processing unit two-way communication, the input end of described button detecting unit connects the output terminal of described rice alphanumeric code tube driving system, the output terminal of described remote control receiver unit connects the input end of described interface unit, the output terminal of described button detecting unit connects the input end of described interface unit, described central processing unit, button detecting unit, video signal unit and interface unit are electrically connected described supply module respectively.
Described button detecting unit comprises keyswitch SW1, keyswitch SW2, keyswitch SW3, keyswitch SW4, keyswitch SW5, keyswitch SW6, keyswitch SW7 and resistance RR54, the 2nd of described keyswitch SW1, 4 pin, the 2nd of keyswitch SW2, 4 pin, the 2nd of keyswitch SW3, 4 pin, the 2nd of keyswitch SW4, 4 pin, the 2nd of keyswitch SW5, 4 pin, the 2nd of keyswitch SW6, 4 pin, the 2nd of keyswitch SW7, 4 pin connect respectively described connection terminal J1 the 2nd pin and through described resistance R54 ground connection, the 1st of described keyswitch SW1, 3 pin connect the other end of described resistance R8, the 1st of described keyswitch SW2, 3 pin connect the other end of described resistance R1, the 1st of described keyswitch SW3, 3 pin connect the other end of described resistance R2, the 1st of described keyswitch SW4, 3 pin connect the other end of described resistance R3, the 1st of described keyswitch SW5, 3 pin connect the other end of described resistance R4, the 1st of described keyswitch SW6, 3 pin connect the other end of described resistance R5, the 1st of described keyswitch SW7, 3 pin connect the other end of described resistance R6.
Described remote control receiver unit comprises remote control reception head U4, resistance R29 and electric capacity C12,1st pin of described remote control reception head U4 connects the positive pole of described electric capacity C12 and one end of resistance R29 respectively, the other end of described resistance R29 connects the lead-out terminal 5V of described supply module, 2nd pin of described remote control reception head U4 and the equal ground connection of negative pole of electric capacity C12, the 2nd pin of described remote control reception head U4 connects the 5th pin of described connection terminal J1.
Remote control reception head U4 can receive the infrared remote-controlled signal that telepilot sends, and the infrared remote-controlled signal as NEC agreement is the modulation signal of 38K carrier wave; And be decoded into the discernible digital signal of central processing unit, export to central processing unit by interface unit, central processing unit response remote controller key instruction, mutual with between finishing equipment and user.
Master control IC(central processing unit) send by clk clock and data data line the shift register (driver module) that the serial data that needs to show forms to 74HC595, after completing the transmission of 24bit data, send STB latching command signals to 74HC595, make the Duan Yuwei removing driving 8 rice alphanumeric code pipes in latches data to tri-state register.The data latched are until before data that next frame will show complete transmission, drive digital-scroll technique always.
The function of button detecting unit has been come by the driving I/O of time division multiplex section, can expand nearly 14 buttons.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a figure place prolongable rice alphanumeric code tube driving system, it is characterized in that: this meter of alphanumeric code tube driving system comprises charactron module, driver module, indicating lamp module, intensifying current module and supply module, the output terminal of described driver module connects the input end of described charactron module, the output terminal of described driver module connects the input end of described indicating lamp module, the output terminal of described driver module connects the input end of described intensifying current module, the output terminal of described intensifying current module connects the input end of described charactron module, described supply module is electrically connected described charactron module, driver module, indicating lamp module and intensifying current module.
2. according to claim 1 meter of alphanumeric code tube driving system, it is characterized in that: this drive system also comprises interface module, described interface module connects described driver module two-way communication, described interface module comprises connection terminal J1 and electric capacity C2,3rd pin of described connection terminal J1 connects the positive pole of described electric capacity C2 and the lead-out terminal 5V of described supply module, the minus earth of described electric capacity C2 respectively.
3. according to claim 2 meter of alphanumeric code tube driving system, it is characterized in that: described driver module comprises the first driver element, second driver element and the 3rd driver element, described first driver element, second driver element and the 3rd driver element are connected successively, described first driver element comprises chip U1, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, resistance R8, resistance R9, resistance R10, resistance R12 and electric capacity C1, 1st pin of described chip U1 connects one end of described resistance R1, 2nd pin of described chip U1 connects one end of described resistance R2, 3rd pin of described chip U1 connects one end of described resistance R3, 4th pin of described chip U1 connects one end of described resistance R4, 5th pin of described chip U1 connects one end of described resistance R5, 6th pin of described chip U1 connects one end of described resistance R6, 7th pin of described chip U1 connects one end of described resistance R7, 11st pin of described chip U1 connects one end of described resistance R10, 12nd pin of described chip U1 connects one end of described resistance R12, 14th pin of described chip U1 connects one end of described resistance R9, 15th pin of described chip U1 connects one end of described resistance R8, 16th pin of described chip U1 connect respectively supply module lead-out terminal 5V and through described electric capacity C1 ground connection, 10th pin of described chip U1 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U1, the equal ground connection of 8 pin, described second driver element comprises chip U2, resistance R13, resistance R14, resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, resistance R20, resistance R21, resistance R22, resistance R24 and electric capacity C5, 1st pin of described chip U2 connects one end of described resistance R13, 2nd pin of described chip U2 connects one end of described resistance R14, 3rd pin of described chip U2 connects one end of described resistance R15, 4th pin of described chip U2 connects one end of described resistance R16, 5th pin of described chip U2 connects one end of described resistance R17, 6th pin of described chip U2 connects one end of described resistance R18, 7th pin of described chip U2 connects one end of described resistance R19, 11st pin of described chip U2 connects one end of described resistance R22, 12nd pin of described chip U2 connects one end of described resistance R24, 14th pin of described chip U2 connects one end of described resistance R21, 15th pin of described chip U2 connects one end of described resistance R20, 16th pin of described chip U2 connect respectively supply module lead-out terminal 5V and through described electric capacity C5 ground connection, 10th pin of described chip U2 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U2, the equal ground connection of 8 pin, the other end of described resistance R21 connects the 9th pin of described chip U1, described 3rd driver element comprises chip U3, resistance R60, resistance R59, resistance R61, resistance R62 and electric capacity C7, described chip U3 the 11st pin connects one end of described resistance R60, 12nd pin of described chip U3 connects one end of described resistance R62, 14th pin of described chip U3 connects one end of described resistance R59, 15th pin of described chip U3 connects one end of described resistance R61, 16th pin of described chip U3 connect respectively described supply module lead-out terminal 5V and through described electric capacity C7 ground connection, 10th pin of described chip U3 connects the lead-out terminal 5V of described supply module, the 13rd of described chip U3, the equal ground connection of 8 pin, the other end of described resistance R59 connects the 9th pin of described chip U2.
4. according to claim 3 meter of alphanumeric code tube driving system, it is characterized in that: described intensifying current module comprises the first enhancement unit, second enhancement unit, 3rd enhancement unit, 4th enhancement unit, 5th enhancement unit, 6th enhancement unit, 7th enhancement unit and the 8th enhancement unit, described first enhancement unit, second enhancement unit, 3rd enhancement unit, 4th enhancement unit, 5th enhancement unit, 6th enhancement unit, 7th enhancement unit and the 8th enhancement unit be parallel to be arranged and identical, it comprises triode Q1, resistance R76 and resistance R77, the base stage of described triode Q1 connects one end of described resistance R76, the other end of described resistance R76 connects the output terminal of described driver module and one end of resistance R77 respectively, the other end and the emitter of described triode Q1 of described resistance R77 are connected the lead-out terminal 5V of described supply module respectively.
5. according to claim 4 meter of alphanumeric code tube driving system, it is characterized in that: described indicating lamp module comprises light emitting diode D6, light emitting diode D5, triode Q24, resistance R93, resistance R91 and resistance 90, the base stage of described triode Q24 connects one end of described resistance R91, the other end of described resistance R91 connects one end of described resistance R93 and the other end of resistance R19 respectively, the other end of described resistance R93 is through described light emitting diode D6 ground connection, the collector of described triode Q24 connects one end of described resistance R90 and the anode of light emitting diode D5 respectively, the other end of described resistance R90 connects the lead-out terminal 5V of described supply module.
6. according to claim 5 meter of alphanumeric code tube driving system, is characterized in that: the chip model that described chip U1, chip U2, chip U3 all adopt is 74HC595.
7. according to claim 6 meter of alphanumeric code tube driving system, it is characterized in that: described charactron module comprises 8 rice alphanumeric code pipes and resistance R92, one end of described resistance R92 connects the 24th pin of described 8 rice alphanumeric code pipes, and the other end of described resistance R92 connects the lead-out terminal 5V of described supply module.
8. a digital video resolution system, it is characterized in that, described digital video resolution system comprises the rice alphanumeric code tube driving system described in claim 2-7, central processing unit, button detecting unit, video signal unit, interface unit and remote control receiver unit, described rice alphanumeric code tube driving system connects described interface unit two-way communication, described interface unit connects described central processing unit two-way communication, described video signal unit connects described central processing unit two-way communication, the input end of described button detecting unit connects the output terminal of described rice alphanumeric code tube driving system, the output terminal of described remote control receiver unit connects the input end of described interface unit, the output terminal of described button detecting unit connects the input end of described interface unit, described central processing unit, video signal unit and interface unit are electrically connected described supply module respectively.
9. digital video resolution system according to claim 8, is characterized in that: described button detecting unit comprises keyswitch SW1, keyswitch SW2, keyswitch SW3, keyswitch SW4, keyswitch SW5, keyswitch SW6, keyswitch SW7 and resistance RR54, the 2nd of described keyswitch SW1, 4 pin, the 2nd of keyswitch SW2, 4 pin, the 2nd of keyswitch SW3, 4 pin, the 2nd of keyswitch SW4, 4 pin, the 2nd of keyswitch SW5, 4 pin, the 2nd of keyswitch SW6, 4 pin, the 2nd of keyswitch SW7, 4 pin connect respectively described connection terminal J1 the 2nd pin and through described resistance R54 ground connection, the 1st of described keyswitch SW1, 3 pin connect the other end of described resistance R8, the 1st of described keyswitch SW2, 3 pin connect the other end of described resistance R1, the 1st of described keyswitch SW3, 3 pin connect the other end of described resistance R2, the 1st of described keyswitch SW4, 3 pin connect the other end of described resistance R3, the 1st of described keyswitch SW5, 3 pin connect the other end of described resistance R4, the 1st of described keyswitch SW6, 3 pin connect the other end of described resistance R5, the 1st of described keyswitch SW7, 3 pin connect the other end of described resistance R6.
10. digital video resolution system according to claim 9, it is characterized in that: described remote control receiver unit comprises remote control reception head U4, resistance R29 and electric capacity C12,1st pin of described remote control reception head U4 connects the positive pole of described electric capacity C12 and one end of resistance R29 respectively, the other end of described resistance R29 connects the lead-out terminal 5V of described supply module, 2nd pin of described remote control reception head U4 and the equal ground connection of negative pole of electric capacity C12, the 2nd pin of described remote control reception head U4 connects the 5th pin of described connection terminal J1.
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Application publication date: 20151216 |