CN102395232B - Shadowless lamp control wiring board for nixie tube display - Google Patents
Shadowless lamp control wiring board for nixie tube display Download PDFInfo
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- CN102395232B CN102395232B CN 201110308056 CN201110308056A CN102395232B CN 102395232 B CN102395232 B CN 102395232B CN 201110308056 CN201110308056 CN 201110308056 CN 201110308056 A CN201110308056 A CN 201110308056A CN 102395232 B CN102395232 B CN 102395232B
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Abstract
The invention discloses a shadowless lamp control wiring board for nixie tube display. The shadowless lamp control wiring board comprises an input power supply that is connected with a switch control box; a protective tube that is used for protecting the input power supply is arranged between the input power supply and the switch control box; the switch control box is connected with a control circuit board through a fence type binding terminal; and the control circuit board is connected with a main bulb and an auxiliary bulb through the fence type binding terminal. Besides, a digital display screen, a main bulb failure alarm indicator, an auxiliary bulb failure alarm indicator, a power supply button, a brightness increasing key, and a brightness reduction key are arranged at the external surface of the control circuit board; a self-recovery fuse, a diode, and a voltage dropping resistor are arranged inside the control circuit board; and the self-recovery fuse, the diode, and the voltage dropping resistor are in series connection with an input terminal of the fence type binding terminal; and moreover, a main chip, a driving chip and a voltage divider resistor are also arranged inside the control circuit board. According to the invention, the shadowless lamp control wiring board has advantages of simplified control, visual shift, reduction on chip caloric power and increase of service life.
Description
technical field:
The present invention relates to a kind of shadowless lamp control wiring board for nixie tube display of power steering stgear.
background technology:
existing shadowless lamp control circuit board adopts LED lamppost or liquid crystal display, gear is not directly perceived, without the brightness memory function, the brightness that each start all needs manual adjustments to arrive needs, bulb without preheating buffering when start or main bulb and the switching of secondary bulb, when king light damages, the switching bulb is perishable, and preheating pooling feature brightness saltus step is obvious, easily cause kopiopia, thereby master chip adopts the quality of current detecting judgement bulb to automatically switch, and controls complicated.
summary of the invention:
The objective of the invention is in order to overcome above deficiency, provide a kind of control to oversimplify, gear is directly perceived, reduces the chip caloric value, the shadowless lamp control wiring board for nixie tube display increased the service life.
Purpose of the present invention is achieved through the following technical solutions: a kind of shadowless lamp control wiring board for nixie tube display, comprise input power, input power is connected with switch control box, be provided with the protective tube of protection input power between input power and switch control box, switch control box is connected with control circuit board by fence type connecting terminal, control circuit board is connected with main bulb and secondary bulb by fence type connecting terminal, the outer surface of control circuit board also is provided with digital display screen, king light fault alarm indicating device, secondary lamp failure warning indicator, power button, brightness increases key, key is lowered in brightness, the control circuit intralamellar part is provided with the resettable fuse of protective circuit, the diode of protection error-polarity connection, the dropping resistor of step-down current limliting, resettable fuse, diode, dropping resistor is connected in series the input of fence type connecting terminal, the control circuit intralamellar part also is provided with master chip, drive chip, divider resistance, when main bulb and the normal operation of secondary bulb, by divider resistance, the signal collected is sent to master chip respectively, by detect pwm pulse in the cycle having or not of signal judge whether bulb damages, drive chip to drive signal to field effect transistor.
Further improvement of the present invention is: key is lowered in brightness and brightness increase key can carry out 10 grades of PWM light modulations, show respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves at digital display screen, the brightness of A shelves is the brightest, 1 grade of brightness is minimum, when the brightness gear changes, the gear data deposit master chip internal data store district in.
Further improvement of the present invention is: when main bulb damages and not to work, main bulb and the automatic switchover of secondary bulb, during switching with 1s preheating buffer protection.
Further improvement of the present invention is: when described main bulb damages, and king light fault alarm indicator for displaying, when secondary bulb-damage, secondary lamp failure warning indicator shows.
Further improvement of the present invention is: resettable fuse protection overtension electric current is excessive or short-circuit conditions under circuit.
Further improvement of the present invention is: diode carries out oppositely when error-polarity connection of power supply can't reverse flow by, circuit, avoids chip and circuit to damage.
Further improvement of the present invention is: the input of the described fence type connecting terminal of dropping resistor series connection access, the voltage and current of reduction input circuit, reduce the chip caloric value.
The present invention compared with prior art has the following advantages:
1, the shadowless lamp control circuit board shows by the energising digital display screen, directly perceived, saved conventional power supply energising indication;
2, adopt impulse detection technique judgement bulb quality, circuit hardware is oversimplified;
3, shadowless lamp control circuit board automatic Memory is preserved nearest gear value, and start can be obtained nearest gear value;
4, master chip adopts AVR micro-chip processor ATTINY2313, drives chip to adopt chip TC4427, controls and oversimplifies;
5, main bulb and secondary bulb automatically switch, and during switching, with 1s preheating buffer protection, adopt the low excessive saltus step of bright time delay without obvious gear saltus step phenomenon, not there will be kopiopia;
6, input supply terminal series connection dropping resistor, the output pressure reduction of reduction input supply terminal, reduce the chip caloric value, increases the service life.
the accompanying drawing explanation:
Fig. 1 is structural representation of the present invention;
Number in the figure: 1-input power, 2-switch control box, 3-protective tube, 4-control circuit board, 5-main bulb, the secondary bulb of 6-, 7-digital display screen, 8-king light fault alarm indicating device, the secondary lamp failure warning indicator of 9-, 10-power button, 11-brightness increase key, key, 13-fence type connecting terminal, 14-resettable fuse, 15-diode, 16-dropping resistor, 17-master chip, 18-driving chip, 19-divider resistance are lowered in 12-brightness.
embodiment:
in order to deepen the understanding of the present invention, below in conjunction with embodiment and accompanying drawing, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
As Fig. 1 shows a kind of execution mode of shadowless lamp control wiring board for nixie tube display of the present invention, comprise input power 1, input power 1 is connected with switch control box 2, be provided with the protective tube 3 of protection input power 1 between input power 1 and switch control box 2, switch control box 2 is connected with control circuit board 4 by fence type connecting terminal 13, control circuit board 4 is connected with main bulb 5 and secondary bulb 6 by fence type connecting terminal 13, the outer surface of control circuit board 4 also is provided with digital display screen 7, king light fault alarm indicating device 8, secondary lamp failure warning indicator 9, power button 10, brightness increases key 11, key 12 is lowered in brightness, control circuit board 4 inside are provided with the resettable fuse 14 of protective circuit, the diode 15 of protection error-polarity connection, the dropping resistor 16 of step-down current limliting, resettable fuse 14, diode 15, dropping resistor 16 is connected in series the input of fence type connecting terminal 13, control circuit board 4 inside also are provided with master chip 17, drive chip 18, divider resistance 19, when main bulb 5 and 6 normal operation of secondary bulb, by divider resistance 19, the signal collected is sent to master chip 17 respectively, by detect pwm pulse in the cycle having or not of signal judge whether bulb damages, drive chip 18 to drive signal to field effect transistor, when main bulb 5 damages, king light fault alarm indicating device 8 shows, when secondary bulb 6 damages, secondary lamp failure warning indicator 9 shows, close the pwm pulse of PB4 mouth output, open PD5 mouth pwm pulse, in the 1s opened, reduce its frequency, thereby reduce the original intensity of bulb, after reaching 1s, pwm outputs to the gear frequency of setting, normal operation.
After power button 10 is pressed, master chip 17 is transferred the gear value of last time automatically, drive chip 18 to drive signal to field effect transistor, control main bulb 5 and secondary bulb 6 and light, by detecting the gear of button, control the bright dark of main bulb 5 and secondary bulb 6, key 12 is lowered in brightness and brightness increase key 11 can carry out 10 grades of PWM light modulations, show respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves at digital display screen 7, the brightness of A shelves is the brightest, and 1 grade of brightness is minimum; When the brightness gear changes, deposit the gear data in master chip 17 internal data store districts.
Master chip 17 adopts AVR micro-chip processor ATTINY2313, drives chip 18 to adopt chip TC4427, controls and oversimplifies
.
Main bulb 5 damages while not working; main bulb 5 automatically switches with secondary bulb 6, while automatically switching with secondary bulb 6 with the start of 1s preheating buffer protection or main bulb 5 during switching, 1s preheating buffer protection is arranged; adopt the low excessive saltus step of bright time delay without obvious gear saltus step phenomenon, do not cause kopiopia.
In the situation that circuit voltage is too high or electric current is excessive or short circuit, resettable fuse 14 meeting automatic disconnections, after pending fault disappears, recover normal operation, reaches the purpose of protective circuit.
During because of carelessness by error-polarity connection of power supply, due to the reverse cut-off effect of diode 15, electric current can't reverse flow, avoids chip and circuit to damage.
Dropping resistor 16 plays the effect of step-down current limliting in circuit, because input pickup resistance is 24V, output resistance is 5V, pressure reduction is larger, the chip heating is higher, adopts in dropping resistor series connection input circuit, can effectively reduce the voltage and current of input circuit, thereby the chip caloric value is reduced greatly, be conducive to the permanent steady operation of chip.
Shadowless lamp control wiring board for nixie tube display has the function of automatic preservation, and automatic Memory is preserved nearest gear value, but automatic acquisition after start arrives the brightness needed without manual adjustments.By the quality of impulse detection technique judgement bulb, circuit hardware is oversimplified, gear signal shows by digital display screen 7, intuitively, has saved conventional power supply energising indication.Input power, with short circuit, overcurrent protection, with the 24V protection to error-polarity connection, prevents from connecing instead, and input power series connection power resistor, reduce input and output pressure reduction, reduces the chip caloric value, increases the service life.
Claims (7)
1. a shadowless lamp control wiring board for nixie tube display, it is characterized in that: comprise input power (1), described input power (1) is connected with switch control box (2), be provided with the protective tube (3) of the described input power of protection (1) between described input power (1) and described switch control box (2), described switch control box (2) is connected with control circuit board (4) by fence type connecting terminal (13), described control circuit board (4) is connected with main bulb (5) and secondary bulb (6) by fence type connecting terminal (13), the outer surface of described control circuit board (4) also is provided with digital display screen (7), king light fault alarm indicating device (8), secondary lamp failure warning indicator (9), power button (10), brightness increases key (11), key (12) is lowered in brightness, described control circuit board (4) inside is provided with the resettable fuse (14) of protective circuit, the diode (15) of protection error-polarity connection, the dropping resistor of step-down current limliting (16), described resettable fuse (14), described diode (15), be connected to again the input of described fence type connecting terminal (13) after described dropping resistor (16) three series connection, described control circuit board (4) inside also is provided with master chip (17), drive chip (18), divider resistance (19), when described main bulb (5) and described secondary bulb (6) normal operation, by divider resistance (19), the signal collected is sent to described master chip (17) respectively, by detect pwm pulse in the cycle having or not of signal judge whether bulb damages, described driving chip (18) drives signal to field effect transistor.
2. shadowless lamp control wiring board for nixie tube display according to claim 1, it is characterized in that: key (12) is lowered in described brightness and described brightness increase key (11) can carry out 10 grades of PWM light modulations, show respectively 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves at described digital display screen (7), the brightness of A shelves is the brightest, 1 grade of brightness is minimum, when the brightness gear changes, the gear data deposit described master chip 17 internal data store districts in.
3. according to the described shadowless lamp control wiring board for nixie tube display of claim 1 or 2, it is characterized in that: when described main bulb (5) damages and not work, described main bulb (5) automatically switches with described secondary bulb (6), during switching with 1s preheating buffer protection.
4. shadowless lamp control wiring board for nixie tube display according to claim 3, it is characterized in that: when described main bulb (5) damages, described king light fault alarm indicating device (8) demonstration, when described secondary bulb (6) damages, described secondary lamp failure warning indicator (9) shows.
5. shadowless lamp control wiring board for nixie tube display according to claim 4 is characterized in that: described resettable fuse (14) protection overtension electric current is excessive or short-circuit conditions under circuit.
6. shadowless lamp control wiring board for nixie tube display according to claim 5, it is characterized in that: described diode (15) oppositely ends when error-polarity connection of power supply, and electric current can't reverse flow, avoids chip and circuit to damage.
7. shadowless lamp control wiring board for nixie tube display according to claim 6 is characterized in that: the input of described dropping resistor (16) the series connection described fence type connecting terminal of access (13), reduce the voltage and current of input circuit, and reduce the chip caloric value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 201110308056 CN102395232B (en) | 2011-10-12 | 2011-10-12 | Shadowless lamp control wiring board for nixie tube display |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110308056 CN102395232B (en) | 2011-10-12 | 2011-10-12 | Shadowless lamp control wiring board for nixie tube display |
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| CN102395232A CN102395232A (en) | 2012-03-28 |
| CN102395232B true CN102395232B (en) | 2013-12-18 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104244536B (en) * | 2014-09-30 | 2016-06-08 | 南通医疗器械有限公司 | A kind of numeral method LED operation shadowless lamp digital light-adjusting circuit |
| CN104754831A (en) * | 2015-03-30 | 2015-07-01 | 无锡中新绿能科技有限公司 | Intelligent film viewing illuminator |
| CN105042534A (en) * | 2015-07-20 | 2015-11-11 | 南通医疗器械有限公司 | Anti-fault operation shadowless lamp power supply system |
| CN106385750B (en) * | 2016-11-07 | 2019-03-12 | 东南大学 | A kind of medical halogen shadowless lamp intelligence control system |
| CN108333973B (en) * | 2018-03-06 | 2020-06-02 | 北京小米移动软件有限公司 | Electronic device, control method and device thereof, and machine-readable storage medium |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163200Y (en) * | 2008-02-22 | 2008-12-10 | 重庆信睿科技有限公司 | Survey instrument display panel of digital optical grating combination type diesel engine |
| CN101858537A (en) * | 2010-05-06 | 2010-10-13 | 南京航空航天大学 | 5D digital LED operation shadowless lamp and working method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101084201B1 (en) * | 2010-05-13 | 2011-11-17 | 삼성모바일디스플레이주식회사 | An liquid crystal display device |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201163200Y (en) * | 2008-02-22 | 2008-12-10 | 重庆信睿科技有限公司 | Survey instrument display panel of digital optical grating combination type diesel engine |
| CN101858537A (en) * | 2010-05-06 | 2010-10-13 | 南京航空航天大学 | 5D digital LED operation shadowless lamp and working method thereof |
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| CN102395232A (en) | 2012-03-28 |
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