CN202334994U - Control circuit board for digital tube display shadowless lamp - Google Patents
Control circuit board for digital tube display shadowless lamp Download PDFInfo
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- CN202334994U CN202334994U CN 201120386758 CN201120386758U CN202334994U CN 202334994 U CN202334994 U CN 202334994U CN 201120386758 CN201120386758 CN 201120386758 CN 201120386758 U CN201120386758 U CN 201120386758U CN 202334994 U CN202334994 U CN 202334994U
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- control circuit
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Abstract
The utility model relates to a control circuit board for a digital tube display shadowless lamp, which comprises an input power supply. The input power supply is connected with a switch control box, a fuse tube 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 the control circuit board through a fence type binding post, the control circuit board is connected with a maim lamp and an auxiliary lamp through fence type binding posts, and the outer surface of the control circuit board is provided with a digital display screen, a main lamp fault alarm indicator, an auxiliary lamp fault alarm indicator, a power supply button, a luminance increasing button and a luminance decreasing button. A resettable fuse, a diode and a voltage reduction resistor are positioned in the control circuit board, wherein the resettable fuse, the diode and the voltage reduction resistor are in series connection at input ends of the fence type binding posts. A main chip, a driving chip and a voltage division resistor are arranged in the control circuit board. The control circuit board for the digital display shadowless lamp has the advantages of being simple in control, visual in gear and capable of reducing heat productivity of chips and prolonging service life.
Description
Technical field:
The charactron that the utility model relates to a kind of power steering stgear shows the shadowless lamp control circuit board.
Background technology:
Existing shadowless lamp control circuit board adopts LED lamppost or liquid crystal display, and gear is not directly perceived, no 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 secondary bulb switch, it is perishable to switch bulb when king light damages; And preheating pooling feature brightness saltus step is obvious; Cause kopiopia easily, thereby master chip adopts current detecting to judge that the quality of bulb automaticallyes switch, control is complicated.
Summary of the invention:
The purpose of the utility model is in order to overcome above deficiency, provides a kind of control to oversimplify, and gear is directly perceived, reduces the chip caloric value, and the charactron that increases the service life shows the shadowless lamp control circuit board.
The purpose of the utility model realizes through following technical scheme: a kind of charactron shows the shadowless lamp control circuit board; Comprise the input power supply; The input power supply is connected with the switch control box; Be provided with the protective tube of protection input power supply between input power supply and the switch control box; The switch control box is connected with control circuit board through the fence type binding post; Control circuit board is connected with main bulb and secondary bulb through the fence type binding post, and 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 increase key, brightness attenuating key, and 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; The be connected in series input of fence type binding post of resettable fuse, diode, dropping resistor; The control circuit intralamellar part also is provided with master chip, chip for driving, divider resistance, when main bulb and secondary bulb operate as normal, through divider resistance the signal that collects is sent to master chip respectively.
The further improvement of the utility model is: key is lowered in brightness and brightness increase key can carry out 10 grades of PWM light modulations; Show 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves respectively at digital display screen; The brightness of A shelves is the brightest; 1 grade of brightness is minimum, and when the brightness gear changed, the gear data deposited master chip internal data store district in.
The further improvement of the utility model is: main bulb damages when not working, and main bulb and secondary bulb automatically switch, and have 1s preheating buffer protection during switching.
The further improvement of the utility model is: when said main bulb damages, and king light fault alarm indicator for displaying, when secondary bulb damaged, secondary lamp failure warning indicator showed.
The utility model compared with prior art has the following advantages:
1, the shadowless lamp control circuit board shows through the energising digital display screen, and is directly perceived, saved conventional power supply energising indication;
2, adopt impulse detection technique to judge the bulb quality, circuit hardware is oversimplified;
3, the shadowless lamp control circuit board is remembered the nearest gear value of preservation automatically, and start can be obtained nearest gear value;
4, master chip adopts the little process chip ATTINY2313 of AVR, and chip for driving adopts chip TC4427, and control is oversimplified;
5, main bulb and secondary bulb automatically switch, and have 1s preheating buffer protection during switching, adopt the low excessive saltus step of bright time-delay not have obvious gear saltus step phenomenon, kopiopia can not occur;
6, input supply terminal series connection dropping resistor, the output pressure reduction of reduction input supply terminal reduces the chip caloric value, increases the service life.
Description of drawings:
Fig. 1 is the structural representation of the utility model;
Label among the figure: 1-input power supply, 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 binding post, 14-resettable fuse, 15-diode, 16-dropping resistor, 17-master chip, 18-chip for driving, 19-divider resistance are lowered in 12-brightness.
Embodiment:
In order to deepen understanding to the utility model, will combine embodiment and accompanying drawing that the utility model is done further to detail below, this embodiment only is used to explain the utility model, does not constitute the qualification to the utility model protection range.
Show a kind of execution mode that the utility model charactron shows the shadowless lamp control circuit board like Fig. 1, comprise input power supply 1, input power supply 1 is connected with switch control box 2; Be provided with the protective tube 3 of protection input power supply 1 between input power supply 1 and the switch control box 2, switch control box 2 is connected with control circuit board 4 through fence type binding post 13, and control circuit board 4 is connected with main bulb 5 and secondary bulb 6 through fence type binding post 13; The outer surface of control circuit board 4 is provided with also that digital display screen 7, king light fault alarm indicating device 8, secondary lamp failure warning indicator 9, power button 10, brightness increase key 11, key 12 is lowered in brightness, and 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, the be connected in series input of fence type binding post 13 of resettable fuse 14, diode 15, dropping resistor 16; Control circuit board 4 inside also are provided with master chip 17, chip for driving 18, divider resistance 19, when main bulb 5 and secondary bulb 6 operate as normal, through divider resistance 19 signal that collects are sent to master chip 17 respectively; Through detect pwm pulse in the cycle having or not of signal judge whether bulb damages; Chip for driving 18 is given the FET drive signal, and when main bulb 5 damaged, king light fault alarm indicating device 8 showed; When secondary bulb 6 damages; Secondary lamp failure warning indicator 9 shows, closes the pwm pulse of PB4 mouth output, opens PD5 mouth pwm pulse; In the 1s that opens; Reduce its frequency, thereby reduce the original intensity of bulb, reach 1s after; Pwm outputs to the gear frequency of setting, operate as normal.
After power button 10 was pressed, master chip 17 was transferred the gear value of last time automatically, and chip for driving 18 is given the FET drive signal; Control main bulb 5 lights with secondary bulb 6, through detecting the gear of button, controls the bright dark of main bulb 5 and secondary bulb 6; Key 12 is lowered in brightness can carry out 10 grades of PWM light modulations with brightness increase key 11; Show 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves respectively 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.
At circuit voltage too high electric current is excessive or the situation of short circuit under, resettable fuse 14 can automatic disconnections, after pending fault disappears, recover operate as normal, reach the purpose of protective circuit.
During because of carelessness with error-polarity connection of power supply, because diode 15 is reverse by effect, electric current can't reverse flow, avoids the damage of chip and circuit.
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 bigger; The chip heating is higher, adopts in the dropping resistor series connection input circuit, can effectively reduce the voltage and current of input circuit; Thereby the chip caloric value is reduced greatly, help the permanent steady operation of chip.
Charactron shows that the shadowless lamp control circuit board has the function of automatic preservation, and nearest gear value is preserved in memory automatically, can obtain automatically after the start, need not manual adjustments to the brightness that needs.Judge with impulse detection technique the quality of bulb circuit hardware to be oversimplified, gear signal shows through digital display screen 7, and is directly perceived, saved conventional power supply energising indication.The input power supply has short circuit, overcurrent protection, has the 24V protection to error-polarity connection, prevents to connect instead, and input power supply series connection power resistor reduces input and output pressure reduction, reduces the chip caloric value, increases the service life.
Claims (4)
1. a charactron shows the shadowless lamp control circuit board; It is characterized in that: comprise input power supply (1); Said input power supply (1) is connected with switch control box (2); Be provided with the protective tube (3) of the said input power supply of protection (1) between said input power supply (1) and the said switch control box (2); Said switch control box (2) is connected with control circuit board (4) through fence type binding post (13); Said control circuit board (4) is connected with main bulb (5) and secondary bulb (6) through fence type binding post (13); The outer surface of said 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 increase key (11), brightness attenuating key (12); Said 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 (16) of step-down current limliting; The be connected in series input of said fence type binding post (13) of said resettable fuse (14), said diode (15), said dropping resistor (16); Said control circuit board (4) inside also is provided with master chip (17), chip for driving (18), divider resistance (19), when said main bulb (5) and said secondary bulb (6) operate as normal, through divider resistance (19) signal that collects is sent to said master chip (17) respectively.
2. show the shadowless lamp control circuit board according to the said charactron of claim 1; It is characterized in that: key (12) is lowered in said brightness and said brightness increase key (11) can carry out 10 grades of PWM light modulations; Show 1 grade, 2 grades, 3 grades, 4 grades, 5 grades, 6 grades, 7 grades, 8 grades, 9 grades, A shelves respectively at said digital display screen (7), the brightness of A shelves is the brightest, and 1 grade of brightness is minimum; When the brightness gear changed, the gear data deposited said master chip 17 internal data store districts in.
3. show the shadowless lamp control circuit board according to claim 1 or 2 said charactrons, it is characterized in that: said main bulb (5) damages when not working, and said main bulb (5) automaticallyes switch with said secondary bulb (6), has 1s preheating buffer protection during switching.
4. show the shadowless lamp control circuit board according to the said charactron of claim 3; It is characterized in that: when said main bulb (5) damages; Said king light fault alarm indicating device (8) shows that when said secondary bulb (6) damaged, said secondary lamp failure warning indicator (9) showed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120386758 CN202334994U (en) | 2011-10-12 | 2011-10-12 | Control circuit board for digital tube display shadowless lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120386758 CN202334994U (en) | 2011-10-12 | 2011-10-12 | Control circuit board for digital tube display shadowless lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202334994U true CN202334994U (en) | 2012-07-11 |
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ID=46446956
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120386758 Expired - Fee Related CN202334994U (en) | 2011-10-12 | 2011-10-12 | Control circuit board for digital tube display shadowless lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202334994U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385750A (en) * | 2016-11-07 | 2017-02-08 | 东南大学 | Intelligent control system for medical halogen shadowless lamp |
-
2011
- 2011-10-12 CN CN 201120386758 patent/CN202334994U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106385750A (en) * | 2016-11-07 | 2017-02-08 | 东南大学 | Intelligent control system for medical halogen shadowless lamp |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120711 Termination date: 20141012 |
|
| EXPY | Termination of patent right or utility model |