CN110223630A - A kind of LED caption machine - Google Patents
A kind of LED caption machine Download PDFInfo
- Publication number
- CN110223630A CN110223630A CN201910614472.9A CN201910614472A CN110223630A CN 110223630 A CN110223630 A CN 110223630A CN 201910614472 A CN201910614472 A CN 201910614472A CN 110223630 A CN110223630 A CN 110223630A
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- Prior art keywords
- led
- power supply
- circuit board
- control circuit
- light intensity
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- 230000007613 environmental effect Effects 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 230000005540 biological transmission Effects 0.000 claims description 4
- 230000001052 transient effect Effects 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 230000001681 protective effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 description 9
- 230000006870 function Effects 0.000 description 7
- 230000003071 parasitic effect Effects 0.000 description 4
- 230000001629 suppression Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011889 copper foil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/06—Adjustment of display parameters
- G09G2320/0626—Adjustment of display parameters for control of overall brightness
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
This application discloses a kind of LED caption machines, it include framework, the LED display being installed in framework and be located at the intracorporal control circuit board of frame and power supply device, control circuit board drives the LED display work for controlling, power supply device is used to power for LED display and control circuit board, the photosensitive sensor for detecting environmental light intensity is provided in framework, dimming unit is provided in control circuit board, the environmental light intensity that dimming unit is used to detect according to photosensitive sensor carries out brightness adjustment to LED display.Photosensitive sensor by the way that dimming unit is arranged in LED caption machine and for detecting environmental light intensity makes the brightness of LED caption machine that can change with environmental light intensity and adjust, avoids in use since constant the may cause human eye of caption machine brightness does not accommodate damage.
Description
Technical field
The application belongs to technical field of LED display, in particular to a kind of LED caption machine.
Background technique
LED caption machine, which is widely used in studio hall, concert, arenas, theater, cinema, museum etc., need to carry out text
And the place that subtitle is shown.In the application, brightness cannot change with luminous environment and change existing LED caption machine, be easy to make
At human eye discomfort, or even damage, such as in theater, performance starts rear Interior Illumination Environment by bright dimmed, if caption machine is still
Original brightness is maintained, then be easy to cause the discomfort and damage of spectators' eyes.
Summary of the invention
One of technical problems to be solved in this application are to provide a kind of LED caption machine, can be carried out according to environmental light intensity bright
Degree adjustment, the discomfort of the human eye to avoid caused by.
In order to solve the above-mentioned technical problem, embodiments herein provides a kind of LED caption machine, including framework, is installed with
LED display in the framework and it is located at the intracorporal control circuit board of the frame and power supply device, the control circuit
Plate drives the LED display work for controlling, and the power supply device is used to supply for the LED display and control circuit board
Electricity is provided with the photosensitive sensor for detecting environmental light intensity in the framework, it is single that light modulation is provided in the control circuit board
Member, the environmental light intensity that the dimming unit is used to be detected according to the photosensitive sensor carry out brightness to the LED display
Adjustment.
Optionally, the dimming unit includes,
Analog to digital conversion circuit, the environmental light intensity for detecting the photosensitive sensor are converted to light intensity digital quantity；
Controller, for being generated according to the light intensity digital quantity and exporting dim signal；
D/A converting circuit for generating light intensity driving current based on the dim signal, and is transmitted to the LED
Display screen, to realize brightness adjustment.
Optionally, the power supply device includes Switching Power Supply.
Optionally, Anti-surging device is provided between the ac input end and the earth of the Switching Power Supply.
Optionally, the Anti-surging device includes Transient Suppression Diode.
Optionally, the outer layer of the switch transformer of the Switching Power Supply has copper foil-clad, and connects the earth to prevent surge
Invasion.
Optionally, the input port of the logic control chip of the Switching Power Supply is serially connected with protective resistance, touches to prevent
It sends out latch and surge destroys.
Optionally, temperature sensor and humidity sensor, the temperature sensor and humidity are additionally provided in the framework
Sensor is electrically connected with the control circuit board.
Optionally, the control circuit board is communicatively coupled by data line and outside control computer, to receive
Caption data simultaneously drives LED display progress captioning synchronization to show.
Optionally, the data line includes RS485 transmission line.
Compared with prior art, one or more embodiments in above scheme can have following advantage or beneficial to effect
Fruit:
Photosensitive sensor of the application by the way that dimming unit is arranged in LED caption machine and for detecting environmental light intensity, makes
The brightness of LED caption machine can change with environmental light intensity and be adjusted, and avoiding in use may lead since caption machine brightness is constant
The human eye of cause does not accommodate damage.And Anti-surging measure is taken in the power supply device of caption machine, caption machine is improved in severe ring
Functional reliability under border.
Other advantages, target and the feature of the application will be illustrated in the following description to a certain extent, and
And to a certain extent, based on will be apparent to those skilled in the art to investigating hereafter, Huo Zheke
To be instructed from the practice of the application.An object of the application and other advantages can be wanted by following specification, right
Specifically noted structure is sought in book and attached drawing to be achieved and obtained.
Detailed description of the invention
Attached drawing is used to provide to the technical solution of the application or further understanding for the prior art, and constitutes specification
A part.Wherein, the attached drawing for expressing the embodiment of the present application is used to explain the technical side of the application together with embodiments herein
Case, but do not constitute the limitation to technical scheme.
Fig. 1 is the appearance diagram according to the LED caption machine of one embodiment of the application；
Fig. 2 is each component connection schematic diagram according to the LED caption machine of one embodiment of the application.
In figure, 1- framework；2-LED display screen；3- control circuit board；4- power supply device；5- photosensitive sensor；6- light modulation is single
Member.
Specific embodiment
Presently filed embodiment is described in detail below with reference to accompanying drawings and embodiments, how the application is applied whereby
Technological means solves technical problem, and the realization process for reaching relevant art effect can fully understand and implement.This Shen
Please each feature in embodiment and embodiment, can be combined with each other under the premise of not colliding, be formed by technical solution
Within the scope of protection of this application.
As depicted in figs. 1 and 2, a kind of LED caption machine provided herein, including framework 1, is installed in framework 1
LED display 2 and be located at the intracorporal control circuit board 3 of frame and power supply device 4, control circuit board 3 for control driving LED
Display screen 2 works, and power supply device 4 is used to power for LED display 2 and control circuit board 3, is provided in framework for detecting ring
The photosensitive sensor 5 of border light intensity, dimming unit 6 is provided in control circuit board 3, and dimming unit 6 is used for according to photosensitive sensor 5
The environmental light intensity detected carries out brightness adjustment to LED display 2.
Photosensitive sensor of the application by the way that dimming unit is arranged in LED caption machine and for detecting environmental light intensity, makes
The brightness of LED caption machine can change with environmental light intensity and be adjusted, and avoiding in use may lead since caption machine brightness is constant
The human eye of cause does not accommodate damage.
In a specific embodiment, dimming unit 6 includes analog to digital conversion circuit, controller and D/A converting circuit.
Wherein, analog to digital conversion circuit, the environmental light intensity for detecting photosensitive sensor are converted to light intensity digital quantity；The mould
The digital I/O port of the output connection controller of number conversion circuit, is transferred to controller for the light intensity digital quantity after conversion；Control
Device processed, for generating and exporting dim signal according to the light intensity digital quantity received, dim signal is transferred to digital-to-analogue conversion electricity
Road, D/A converting circuit is based on the dim signal and generates light intensity driving current, and is transmitted to LED display, bright to realize
Degree adjustment.
In the above process, dim signal is generated according to the light intensity digital quantity received, environment light prepared in advance can be used
It is by force suitable for the relation curve of brightness with human eye to be to realize.
In the embodiment, power supply device 4 uses Switching Power Supply, for example, by using input are as follows: AC15V--300V is exported and is
DC5V, the AC/DC Switching Power Supply of precision 1%.
And in order to guarantee the functional reliability of caption machine in the presence of a harsh environment, Switching Power Supply is taken in the application multinomial
Anti-surging measure.
Specifically, including the setting Anti-surging device between the ac input end and the earth of Switching Power Supply.Here the earth
Refer to the PE line of caption machine power supply, and Transient Suppression Diode (TVS) can be used in Anti-surging device, varistor (MOV) or aerating
Body discharge tube (GDT/SPG).
As a preference, Anti-surging device uses Transient Suppression Diode (TVS) in the present embodiment, it can be in 8-12
Millisecond absorbs up to thousands of watts of surge power, and late-class circuit in Switching Power Supply is protected not to be damaged, and then guarantees whole word
The functional reliability of curtain machine.
Further include the outer layer progress copper foil-clad in the switch transformer of Switching Power Supply, and copper foil is connected into the earth, to
Prevent surge from invading.
It further include the input port of the logic control chip of Switching Power Supply being concatenated into protective resistance, such as concatenate the left side 100 Ω
Right resistance, to prevent trigger latch and surge from destroying.
Latch-up refers to the intrinsic parasitic bipolar transistor of cmos device (also known as parasitic silicon-controlled, abbreviation SCR) quilt
Triggering and conducting forms the access of low impedance heavy current between power supply and ground, causes device can not work normally, or even burn device
The phenomenon that part.There are the various pieces in cmos device for this parasitic bipolar transistor, including input, output end, inside are instead
Phase device etc..When external interference noise, which makes some parasitic transistor be triggered, to be connected, it is possible to induce latch, this external interference
Noise is often random, such as the surge pulse of power supply, static discharge, radiation.Under the premise of not influencing signal quality,
Logic chip input port concatenates 100 Ω or so resistance, can prevent trigger latch, chip is protected not destroyed by surge.
In the embodiment, control circuit board 2 is communicatively coupled by data line and outside control computer, to receive
Caption data simultaneously drives LED display progress captioning synchronization to show.
Specifically, in control computer end, proprietary video jukebox software is broadcast after being loaded into video file and subtitle file
It puts, video flowing is transferred to video display apparatus by video card output port, and subtitle of the subtitle in video jukebox software simultaneously
Window carries out drafting and shows, passes through under data line by intercepting to the subtitle of display, and by the caption data of interception
The control circuit board of caption machine is passed to, so that control circuit board carries out subtitle according to obtained caption data driving LED display
Display.
As a specific implementation manner, RS485 transmission line can be used in the data line for being used for transmission caption data.
In this embodiment, temperature sensor and humidity sensor are additionally provided in framework 1, temperature sensor and humidity pass
Sensor is electrically connected with control circuit board.Temperature sensor and humidity sensor are respectively used to the epidemic disaster of detection indoor environment,
To be shown when caption machine is without Subtitle Demonstration to the real time humiture information of environment, the function of caption machine is increased
Property.
It is understood that same or similar part can mutually refer in the various embodiments described above, in some embodiments
Unspecified content may refer to the same or similar content in other embodiments.
It should be noted that term " first ", " second " etc. are used for description purposes only in the description of the present application, without
It can be interpreted as indication or suggestion relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
Refer at least two.
Any process described otherwise above or method description are construed as in flow chart or herein, and expression includes
It is one or more for realizing specific logical function or process the step of executable instruction code module, segment or portion
Point, and the range of the preferred embodiment of the application includes other realization, wherein can not press shown or discussed suitable
Sequence, including according to related function by it is basic simultaneously in the way of or in the opposite order, Lai Zhihang function, this should be by the application
Embodiment person of ordinary skill in the field understood.
It should be appreciated that each section of the application can be realized with hardware, software, firmware or their combination.Above-mentioned
In embodiment, software that multiple steps or method can be executed in memory and by suitable instruction execution system with storage
Or firmware is realized.It, and in another embodiment, can be under well known in the art for example, if realized with hardware
Any one of column technology or their combination are realized: having a logic gates for realizing logic function to data-signal
Discrete logic, with suitable combinational logic gate circuit specific integrated circuit, programmable gate array (PGA), scene
Programmable gate array (FPGA) etc..
Those skilled in the art are understood that realize all or part of step that above-described embodiment method carries
It suddenly is that relevant hardware can be instructed to complete by program, the program can store in a kind of computer-readable storage medium
In matter, which when being executed, includes the steps that one or a combination set of embodiment of the method.
It, can also be in addition, can integrate in a processing module in each functional unit in each embodiment of the application
It is that each unit physically exists alone, can also be integrated in two or more units in a module.Above-mentioned integrated mould
Block both can take the form of hardware realization, can also be realized in the form of software function module.The integrated module is such as
Fruit is realized and when sold or used as an independent product in the form of software function module, also can store in a computer
In read/write memory medium.
Storage medium mentioned above can be read-only memory, disk or CD etc..
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is contained at least one embodiment or example of the application.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
Although embodiments herein has been shown and described above, it is to be understood that above-described embodiment is example
Property, it should not be understood as the limitation to the application, those skilled in the art within the scope of application can be to above-mentioned
Embodiment is changed, modifies, replacement and variant.
Claims (10)
1. a kind of LED caption machine, including framework, the LED display being installed in the framework and to be located at the frame intracorporal
Control circuit board and power supply device, the control circuit board drive the LED display work, the power supply device for controlling
For powering for the LED display and control circuit board, which is characterized in that be provided in the framework for detecting environment light
Strong photosensitive sensor, dimming unit is provided in the control circuit board, and the dimming unit is used for according to the photosensitive biography
The environmental light intensity that sensor detects carries out brightness adjustment to the LED display.
2. LED caption machine according to claim 1, which is characterized in that the dimming unit includes,
Analog to digital conversion circuit, the environmental light intensity for detecting the photosensitive sensor are converted to light intensity digital quantity；
Controller, for being generated according to the light intensity digital quantity and exporting dim signal；
D/A converting circuit for generating light intensity driving current based on the dim signal, and is transmitted to the LED and shows
Screen, to realize brightness adjustment.
3. LED caption machine according to claim 1, which is characterized in that the power supply device includes Switching Power Supply.
4. LED caption machine according to claim 3, which is characterized in that the ac input end and the earth of the Switching Power Supply
Between be provided with Anti-surging device.
5. LED caption machine according to claim 4, which is characterized in that the Anti-surging device includes that transient state inhibits two poles
Pipe.
6. LED caption machine according to claim 3, which is characterized in that the outer layer of the switch transformer of the Switching Power Supply
There is copper foil-clad, and connects the earth to prevent surge from invading.
7. LED caption machine according to claim 3, which is characterized in that the logic control chip of the Switching Power Supply it is defeated
Inbound port is serially connected with protective resistance, to prevent trigger latch and surge from destroying.
8. LED caption machine according to claim 1, which is characterized in that be additionally provided in the framework temperature sensor and
Humidity sensor, the temperature sensor and humidity sensor are electrically connected with the control circuit board.
9. LED caption machine according to claim 1, which is characterized in that the control circuit board by data line with
Outside control computer is communicatively coupled, and is shown with receiving caption data and LED display being driven to carry out captioning synchronization.
10. LED caption machine according to claim 9, which is characterized in that the data line includes RS485 transmission line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614472.9A CN110223630A (en) | 2019-07-09 | 2019-07-09 | A kind of LED caption machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910614472.9A CN110223630A (en) | 2019-07-09 | 2019-07-09 | A kind of LED caption machine |
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| Publication Number | Publication Date |
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| CN110223630A true CN110223630A (en) | 2019-09-10 |
Family
ID=67813015
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| CN201910614472.9A Pending CN110223630A (en) | 2019-07-09 | 2019-07-09 | A kind of LED caption machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2033935U (en) * | 1988-08-18 | 1989-03-08 | 山西省合成材料舞台美术研究所 | Subtitles showing device controlled by micro-computer |
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| CN205680350U (en) * | 2016-06-03 | 2016-11-09 | 石其顺 | A kind of electronic calendar with information reminding display function |
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| CN108447440A (en) * | 2018-03-05 | 2018-08-24 | 江苏威尔曼科技有限公司 | A kind of matrix display and its control method of adaption brightness |
| CN108811243A (en) * | 2018-06-06 | 2018-11-13 | 无锡华兆泓光电科技有限公司 | A kind of intelligent Anti-surging LED lamp driver of farm |
| CN209993328U (en) * | 2019-07-09 | 2020-01-24 | 北京颐景丰科技有限公司 | LED caption machine |
-
2019
- 2019-07-09 CN CN201910614472.9A patent/CN110223630A/en active Pending
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