CN101183503A - Temperature compensation means for LED display and control method thereof - Google Patents
Temperature compensation means for LED display and control method thereof Download PDFInfo
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- CN101183503A CN101183503A CNA2007101251844A CN200710125184A CN101183503A CN 101183503 A CN101183503 A CN 101183503A CN A2007101251844 A CNA2007101251844 A CN A2007101251844A CN 200710125184 A CN200710125184 A CN 200710125184A CN 101183503 A CN101183503 A CN 101183503A
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Abstract
The invention relates to a temperature-compensating device and a control method for LED display, which comprises a terminal equipment with video source information, a video controller and an LED display screen; wherein the LED display screen comprises a plurality display units and each display unit is provided with a receiving card. The receiving card comprises a power module, a main control module and a network module, which are connected with each other. The address judgment, forward process, decoding and playing operations of the video information is completed by the main control module. The invention is characterized in that a temperature monitoring module and an electric heating plate are arranged in the receiving card; wherein the temperature monitoring module is connected with the electric heating plate between the power module and the main control module, the network module. The temperature state of the receiving card is monitored by the temperature monitoring module; the power supply close-open of the main control module and the network module from the power module, and the start of the electric heating plate for heating the receiving card are controlled according to the temperature state of the receiving card. The invention has the advantages of no selecting limitation to system design and high functional reliability.
Description
Technical field
The present invention relates to control, relate in particular to a kind of LED of being used for temperature displayed compensation system and control method thereof.
Background technology
Existing LED display can be divided into indoor LED display, semi-outdoor LED display and outdoor LED display screen according to the environment for use difference, its system architecture generally as shown in Figure 1, comprise terminal device 1, Video Controller 2 and a LED display 3 that comprises video source information, comprise a plurality of display units 31 in the LED display 3, a receiving card 30 is set in each display unit 31, terminal device 1 transmits video information by the receiving card 30 of Video Controller 2 in LED display 3, interconnect between the receiving card 30, finish video playback.
At some cold district, for example, place such as Northeast China and Russia, the temperature in winter is generally all in subzero, this may produce harmful effect for semi-outdoor LED display and outdoor LED display screen, comprise power module 301A, main control module 302A and mixed-media network modules mixed-media 303A in the receiving card 30 as shown in Figure 2, and interconnect, power module 301A provides working power to main control module 302A and mixed-media network modules mixed-media 303A, mixed-media network modules mixed-media 303A is between receiving card 30 and the Video Controller 2, and the data communication interface between the receiving card 30; Main control module 302A finishes the address of video information and judges, transmits processing, decoding, play operation, and wherein main control module 302A, mixed-media network modules mixed-media 303A etc. adopt integrated circuit (IC) chip.
General integrated circuit (IC) chip can be divided into three kinds of business level, technical grade and army grades according to working temperature: during the temperature range of business level 0 ℃～70 ℃, technical grade is-40 ℃～85 ℃, and army grade is-55 ℃～125 ℃.The selection of integrated circuit (IC) chip is just selected in business level and technical grade for general company.If common commercial level chip, when the ultra-specification scope is used chip, just might produce the part key function module and can't work or operate abnormal phenomenon, that is to say, at cold district, because temperature is extremely low, may cause main control module 302A and mixed-media network modules mixed-media 303A job insecurity in the receiving card 30.
Can depend on and use the technical grade chip though solve the low temperature problem, have 2 problems for the application of technical grade chip:
One, the price of technical grade chip is than the price height of business level chip.
Two, some technical grade chip is difficult for buying.
Therefore, just be easy to generate the puzzlement of system design selection, thereby cause the limitation of system design.
Summary of the invention
The object of the present invention is to provide a kind of LED of being used for temperature displayed compensation system and control method thereof,, cause the circumscribed defective of system design to overcome the puzzlement that is easy to generate the system design selection in the prior art.
The LED temperature displayed compensation system that is used for of the present invention, comprise a terminal device that comprises video source information, Video Controller and LED display, comprise a plurality of display units in the described LED display, a receiving card is set in each display unit, described terminal device transmits video information by the receiving card of Video Controller in LED display, interconnect between the receiving card, finish video playback, comprise power module in the described receiving card, main control module and mixed-media network modules mixed-media, and interconnect, wherein
Described power module provides working power to main control module and mixed-media network modules mixed-media;
Described mixed-media network modules mixed-media is between receiving card and the Video Controller, and the data communication interface between the receiving card;
Described main control module is finished the address of video information and is judged, transmits processing, decoding, play operation;
It is characterized in that: monitoring temperature module and electric heating sheets are set in the described receiving card, described monitoring temperature module is connected between power module and main control module, the mixed-media network modules mixed-media, and be connected with electric heating sheets, the state of temperature of this this receiving card of monitoring temperature module monitors, and according to the on/off of described state of temperature control electric power source pair of module main control module, mixed-media network modules mixed-media, and the control electric heating sheets is to the startup of receiving card heating.
Described monitoring temperature module comprises temperature detection chip, main control chip and first relay switch, second relay switch, wherein,
Described main control chip links to each other respectively with power module, temperature detection chip, first relay switch, second relay switch;
First relay switch is connected between power module and the electric heating sheets, and second relay switch is connected between power module and main control module, the mixed-media network modules mixed-media;
The temperature value of temperature detection chip detection receiving card, detected temperature value is passed to main control chip, main control chip is compared the temperature value received with a temperature threshold of setting, correspondingly control being alternately closed or disconnecting of first relay switch, second relay switch.
Described monitoring temperature module adopts technical grade chip or device.
Described temperature detection chip adopts the DS18B20 chip of Dalas, and main control chip adopts the AT89S51 chip, and first relay switch, second relay switch adopt ALD105 model relay.
The PCB circuit board top of receiving card is laid, is pasted on to described electric heating sheets.
Described electric heating sheets is the silicon rubber electric heating sheets that the Alloy Foil of employing nickel alloy is carried out etching and processing, and the film thickness of this silicon rubber electric heating sheets is 1mm～2mm.
Described main control module and mixed-media network modules mixed-media adopt the business level chip.
The LED temperature displayed compensating control method that is used for of the present invention adopts following steps:
A, receiving card power on, and power module starts;
B, monitoring temperature module start the state of temperature of this receiving card of monitoring;
C, monitoring temperature module are controlled the on/off of electric power source pair of module main control module, mixed-media network modules mixed-media according to described state of temperature, and control the startup of electric heating sheets to the receiving card heating.
Described step C comprises the steps:
C1, main control chip receive the temperature value of receiving card;
C2, main control chip are compared the temperature value of receiving with a temperature threshold of setting, carry out following operation:
C21, if temperature value is lower than temperature threshold, closed first relay switch, electric heating sheets start heating; Simultaneously, disconnect second relay switch, return step C2;
C22 otherwise, continue following steps C3;
C3, disconnection first relay switch; Simultaneously, closed second relay switch is communicated with the passage between power module and main control module, the mixed-media network modules mixed-media.
Also comprise the steps D after the described step C:
D, terminal device transmit video information by Video Controller to receiving card, finish video playback.
Beneficial effect of the present invention is: in the present invention, monitoring temperature module and electric heating sheets are set in the receiving card, the monitoring temperature module is connected in power module and main control module, between the mixed-media network modules mixed-media, and be connected with electric heating sheets, the state of temperature of this this receiving card of monitoring temperature module monitors, and according to state of temperature control electric power source pair of module main control module, the on/off of mixed-media network modules mixed-media, and the control electric heating sheets is to the startup of receiving card heating, like this, even if at cold district, by electric heating sheets receiving card is heated, avoid the ultra-specification scope to use the situation of chip, can guarantee no matter main control module and mixed-media network modules mixed-media in the receiving card are to adopt technical grade chip or business level chip, can realize stably working, therefore, the present invention for the selection of system design (as the main control module, the key function module that mixed-media network modules mixed-media is such) there is not limitation.
In the present invention, the monitoring temperature module adopts technical grade chip or device, for example, temperature detection chip wherein adopts the DS18B20 chip of Dalas, main control chip adopts the AT89S51 chip, and first relay switch, second relay switch adopt ALD105 model relay, can guarantee monitoring temperature module operate as normal under low temperature environment, thereby can guarantee the startup of receiving card among the present invention effectively, further improve functional reliability of the present invention.
In the present invention, main control module and mixed-media network modules mixed-media adopt the business level chip, can make the present invention keep the low cost of trying one's best effectively.
Description of drawings
Fig. 1 is a LED display system architecture synoptic diagram in the prior art;
Fig. 2 is a receiving card inner structure synoptic diagram in the prior art;
Fig. 3 is a LED display system architecture synoptic diagram of the present invention;
Fig. 4 is a receiving card inner structure synoptic diagram of the present invention;
Fig. 5 is a basic controlling flow process synoptic diagram of the present invention;
Fig. 6 is the concrete control flow synoptic diagram of the present invention.
Embodiment
With embodiment the present invention is described in further detail with reference to the accompanying drawings below:
According to Fig. 3, the present invention includes terminal device 1, Video Controller 2 and a LED display 3 that comprises video source information, comprise a plurality of display units 31 in the LED display 3, a receiving card 30 is set in each display unit 31, terminal device 1 transmits video information by the receiving card 30 of Video Controller 2 in LED display 3, interconnect between the receiving card 30, finish video playback.
As shown in Figure 4, comprise power module 301, main control module 302, mixed-media network modules mixed-media 303, monitoring temperature module 304, electric heating sheets 305 in the receiving card 30, monitoring temperature module 304 is connected between power module 301 and main control module 302, the mixed-media network modules mixed-media 303, and is connected with electric heating sheets 305.
As shown in Figure 4, power module 301 provides working power to main control module 302, mixed-media network modules mixed-media 303 and monitoring temperature module 304, and in the present invention, power module 301 can adopt the technical grade chip, as LT3501 chip and LT3506 chip.
As shown in Figure 4, mixed-media network modules mixed-media 303 is between receiving card 30 and the Video Controller 2, and the data communication interface between the receiving card 30.
As shown in Figure 4, main control module 302 is finished the address of video information and is judged, transmits processing, decoding, play operation.
In the present invention, main control module 302 and mixed-media network modules mixed-media 303 adopt the business level chip, and wherein, main control module 302 adopts the EP3C10F256C8 chip of ALTERA, and mixed-media network modules mixed-media 303 adopts RTL8212 kilomega network phy chip.
As shown in Figure 4, monitoring temperature module 304 is monitored the state of temperature of these receiving cards 30, and controls the on/off of 301 pairs of main control modules 302 of power module, mixed-media network modules mixed-media 303 according to state of temperature, and controls the startup that 305 pairs of receiving cards of electric heating sheets 30 heat.
Particularly, as shown in Figure 4, monitoring temperature module 304 comprises temperature detection chip 3040, main control chip 3041 and first relay switch 3042, second relay switch 3043.
As shown in Figure 4, main control chip 3041 links to each other respectively with power module 301, temperature detection chip 3040, first relay switch 3042, second relay switch 3043.
As shown in Figure 4, first relay switch 3042 is connected between power module 301 and the electric heating sheets 305, and second relay switch 3043 is connected between power module 301 and main control module 302, the mixed-media network modules mixed-media 303.
In the present invention, the PCB circuit board top of receiving card 30 is laid, is pasted on to electric heating sheets 305, electric heating sheets 305 carries out the silicon rubber electric heating sheets of etching and processing for the Alloy Foil that adopts nickel alloy, the film thickness of this silicon rubber electric heating sheets is 1mm～2mm, insulation course wherein is composited by silicon rubber and glass fabric, have high insulating property, voltage breakdown can reach 20～50KV/mm.The heater element heating power that the Alloy Foil of nickel alloy is carried out etching and processing can reach 2.1W/cm
2, heat very even.
The minimum heatproof of silicon rubber electric heating sheets can reach subzero 60 ℃, and maximum operation (service) temperature is below 250 ℃, operating voltage can according to receiving card require tailored range at 3V～220V, thereby make its application very extensive.The silicon rubber electric heating sheets has good flexibility, can with the PCB circuit board of receiving card 30 between closely contact fully, like this, just can allow heat be delivered to receiving card 30 any required places, this silicon rubber electric heating sheets can be made into different shape size (as circle, ellipse, vertebra shape etc.) according to the needs of receiving card 30, can be attached to fully on the PCB circuit board of receiving card 30, also chip can be exposed and be attached to other position of PCB circuit board.
The installation of silicon rubber electric boiling plate can be passed through vulcanized rubber at room temperature, and sulfuration is installed, and also can install according to the actual hole that requires, or with tying the installation of watchman's wooden clapper form, this to those skilled in the art, can not need to pay creative work can implement, and repeats no more herein.
As shown in Figure 4, temperature detection chip 3040 detects the temperature value of receiving card 30, detected temperature value is passed to main control chip 3041, main control chip 3041 is compared the temperature value received with a temperature threshold of setting, correspondingly control being alternately closed or disconnecting of first relay switch 3042, second relay switch 3043.
In the present invention, functional module in the monitoring temperature module 304 adopts technical grade chip or device, wherein, temperature detection chip 3040 adopts the DS18B20 chip of Dalas, main control chip 3041 adopts the AT89S51 chip, and first relay switch 3042, second relay switch 3043 adopt ALD105 model relay.
As shown in Figure 4 and Figure 5, basic controlling flow process of the present invention is as follows:
1, receiving card 30 powers on, and power module 301 starts.
2, monitoring temperature module 304 starts the state of temperature of monitoring this receiving card 30.
3, monitoring temperature module 304 is controlled the on/off of 301 pairs of main control modules 302 of power module, mixed-media network modules mixed-media 303 according to state of temperature, and controls the startup that 305 pairs of receiving cards of electric heating sheets 30 heat.
As Fig. 4 and shown in Figure 6, the concrete control flow of the present invention is as follows:
1) receiving card 30 powers on, and power module 301 starts.
2) temperature detection chip 3040 detects the temperature value of receiving card 30, and detected temperature value is passed to main control chip 3041.
3) main control chip 3041 receives the temperature value of receiving card 30.
4) main control chip 3041 is compared a temperature value and the temperature threshold (for example, 0 ℃) of setting received, and carries out following operation:
41) if temperature value is lower than temperature threshold, closed first relay switch 3042, electric heating sheets 305 starts heating; Simultaneously, (maintenance) disconnects second relay switch 3043, returns step 4).
42) otherwise, continue following steps 5).
5) disconnect first relay switch 3042, electric heating sheets 305 stops heating; Simultaneously, closed second relay switch 3043 is communicated with the passage between power module 301 and main control module 302, the mixed-media network modules mixed-media 303, and at this moment, main control module 302 and mixed-media network modules mixed-media 303 can begin operate as normal.
6) terminal device 1 transmits video information by Video Controller 2 to receiving card 30, finishes video playback.
The present invention as shown in table 1 below and prior art are for the cost contrast of comparable functional module chip between receiving card 30 Typical Disposition, and the above, as can be seen, remove power module 301A/301 between the two and adopt identical chips, in two of mixed-media network modules mixed-media 303A/303 and main control module 302A/302, because the present invention adopted the business level chip, can save about 5.5 dollars, therefrom can obtain following some:
(1) the present invention compared with prior art, although mixed-media network modules mixed-media 303 of the present invention and main control module 302 have adopted the business level chip, because can be by 30 heating of 305 pairs of receiving cards of electric heating sheets, reached the result of use of whole employing technical grade chips, yet, there is not limitation in the present invention for the selection (key function module as main control module 302, mixed-media network modules mixed-media 303) of system design, make system design simplify, having improved the replaceable of functional module chip must property, and this makes that also follow-up maintenance of the present invention is more convenient.
(2) the present invention compared with prior art, though the present invention has set up monitoring temperature module 304 and electric heating sheets 305, but because mixed-media network modules mixed-media 303 and main control module 302 are adopted the business level chip, this raising for total cost of the present invention has produced one and has liquidated to disappear and use instead, can make the present invention keep the low cost of trying one's best effectively, thereby make the present invention obtain the good ratio of performance to price.
(3) in the present invention, except power module 301 and monitoring temperature module 304 adopt the technical grade chip, other chip all can adopt the business level chip, thereby the present invention still can normally be started under subzero 40 ℃ situation.
| Mixed-media network modules mixed- |
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| Model | Reference price | Model | Reference price | Model | Reference price | ||
| Prior art | BCM5345 (technical grade) | 7± | The EP3C10F256I8 of ALTERA (technical grade) | 12± | LT3501/LT3506 (technical grade) | \ | The unit of value: dollar |
| The present invention | RTL8212 (business level) | 3.5± | The EP3C10F256C8 of ALTERA (business level) | 10± | LT3501/LT3506 (technical grade) | \ | The unit of value: dollar |
Table 1
In sum, although basic structure of the present invention, principle and control flow pass through the foregoing description with concrete elaboration, under the prerequisite that does not break away from main idea of the present invention, according to above-described inspiration, those of ordinary skills can not need to pay creative work can implement multiple conversion or alternative or array configuration, repeats no more herein.
Claims (10)
1. one kind is used for LED temperature displayed compensation system, comprise a terminal device that comprises video source information, Video Controller and LED display, comprise a plurality of display units in the described LED display, a receiving card is set in each display unit, described terminal device transmits video information by the receiving card of Video Controller in LED display, interconnect between the receiving card, finish video playback, comprise power module in the described receiving card, main control module and mixed-media network modules mixed-media, and interconnect, wherein
Described power module provides working power to main control module and mixed-media network modules mixed-media;
Described mixed-media network modules mixed-media is between receiving card and the Video Controller, and the data communication interface between the receiving card;
Described main control module is finished the address of video information and is judged, transmits processing, decoding, play operation;
It is characterized in that: monitoring temperature module and electric heating sheets are set in the described receiving card, described monitoring temperature module is connected between power module and main control module, the mixed-media network modules mixed-media, and be connected with electric heating sheets, the state of temperature of this this receiving card of monitoring temperature module monitors, and according to the on/off of described state of temperature control electric power source pair of module main control module, mixed-media network modules mixed-media, and the control electric heating sheets is to the startup of receiving card heating.
2. the LED temperature displayed compensation system that is used for according to claim 1 is characterized in that:
Described monitoring temperature module comprises temperature detection chip, main control chip and first relay switch, second relay switch, wherein,
Described main control chip links to each other respectively with power module, temperature detection chip, first relay switch, second relay switch;
First relay switch is connected between power module and the electric heating sheets, and second relay switch is connected between power module and main control module, the mixed-media network modules mixed-media;
The temperature value of temperature detection chip detection receiving card, detected temperature value is passed to main control chip, main control chip is compared the temperature value received with a temperature threshold of setting, correspondingly control being alternately closed or disconnecting of first relay switch, second relay switch.
3. the LED temperature displayed compensation system that is used for according to claim 2 is characterized in that: described monitoring temperature module adopts technical grade chip or device.
4. the LED temperature displayed compensation system that is used for according to claim 3, it is characterized in that: described temperature detection chip adopts the DS18B20 chip of Dalas, main control chip adopts the AT89S51 chip, and first relay switch, second relay switch adopt ALD105 model relay.
5. according to any described LED temperature displayed compensation system that is used among the claim 1-4, it is characterized in that: the PCB circuit board top of receiving card is laid, is pasted on to described electric heating sheets.
6. the LED temperature displayed compensation system that is used for according to claim 5 is characterized in that:
Described electric heating sheets is the silicon rubber electric heating sheets that the Alloy Foil of employing nickel alloy is carried out etching and processing, and the film thickness of this silicon rubber electric heating sheets is 1mm～2mm.
7. according to any described LED temperature displayed compensation system that is used among the claim 1-4, it is characterized in that: described main control module and mixed-media network modules mixed-media adopt the business level chip.
8. one kind is used for LED temperature displayed compensating control method, it is characterized in that: it adopts following steps:
A, receiving card power on, and power module starts;
B, monitoring temperature module start the state of temperature of this receiving card of monitoring;
C, monitoring temperature module are controlled the on/off of electric power source pair of module main control module, mixed-media network modules mixed-media according to described state of temperature, and control the startup of electric heating sheets to the receiving card heating.
9. the LED temperature displayed compensating control method that is used for according to claim 8, it is characterized in that: described step C comprises the steps:
C1, main control chip receive the temperature value of receiving card;
C2, main control chip are compared the temperature value of receiving with a temperature threshold of setting, carry out the operation down as X:
C21, if temperature value is lower than temperature threshold, closed first relay switch, electric heating sheets start heating; Simultaneously, disconnect second relay switch, return step C2;
C22 otherwise, continue following steps C3;
C3, disconnection first relay switch; Simultaneously, closed second relay switch is communicated with the passage between power module and main control module, the mixed-media network modules mixed-media.
10. any described LED temperature displayed compensating control method that is used for according to Claim 8-9 is characterized in that: also comprise the steps D after the described step C:
D, terminal device transmit video information by Video Controller to receiving card, finish video playback.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101251844A CN100524394C (en) | 2007-12-20 | 2007-12-20 | Temperature compensation means for LED display and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101251844A CN100524394C (en) | 2007-12-20 | 2007-12-20 | Temperature compensation means for LED display and control method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN101183503A true CN101183503A (en) | 2008-05-21 |
| CN100524394C CN100524394C (en) | 2009-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101251844A Expired - Fee Related CN100524394C (en) | 2007-12-20 | 2007-12-20 | Temperature compensation means for LED display and control method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582177A (en) * | 2015-01-04 | 2015-04-29 | 哈尔滨天宝石墨科技发展有限公司 | Method for controlling cold area LED lamp with heating and cooling functions |
| CN104898741A (en) * | 2015-06-24 | 2015-09-09 | 合肥鑫晟光电科技有限公司 | Display device |
| CN106251801A (en) * | 2016-08-09 | 2016-12-21 | 上海展荟诗实业有限公司 | A kind of RGB scalable color light emitting device drive system and method |
| CN111739460A (en) * | 2019-03-19 | 2020-10-02 | 西安诺瓦电子科技有限公司 | Display control device and display system |
| CN114302527A (en) * | 2021-12-23 | 2022-04-08 | 固安翌光科技有限公司 | OLED light-emitting device and control method thereof |
-
2007
- 2007-12-20 CN CNB2007101251844A patent/CN100524394C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104582177A (en) * | 2015-01-04 | 2015-04-29 | 哈尔滨天宝石墨科技发展有限公司 | Method for controlling cold area LED lamp with heating and cooling functions |
| CN104898741A (en) * | 2015-06-24 | 2015-09-09 | 合肥鑫晟光电科技有限公司 | Display device |
| CN106251801A (en) * | 2016-08-09 | 2016-12-21 | 上海展荟诗实业有限公司 | A kind of RGB scalable color light emitting device drive system and method |
| CN111739460A (en) * | 2019-03-19 | 2020-10-02 | 西安诺瓦电子科技有限公司 | Display control device and display system |
| CN114302527A (en) * | 2021-12-23 | 2022-04-08 | 固安翌光科技有限公司 | OLED light-emitting device and control method thereof |
| CN114302527B (en) * | 2021-12-23 | 2023-09-01 | 固安翌光科技有限公司 | OLED light-emitting device and control method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100524394C (en) | 2009-08-05 |
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Owner name: SHENZHEN ALTO ELECTRONICS COMPANY LTD. Free format text: FORMER NAME: SHENZHEN ALTO ELECTRONICS CO., LTD. |
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Address after: 518057 T2 A6-B, South District, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee after: Shenzhen Aoto Electronics Co., Ltd. Address before: 518057 T2 A6-B, South District, Nanshan District hi tech Industrial Park, Guangdong, Shenzhen Patentee before: Autuo Electronics Co., Ltd., Shenzhen City |
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Granted publication date: 20090805 Termination date: 20171220 |