CN111435584A - Information display lamp and display control device and method thereof - Google Patents
Information display lamp and display control device and method thereof Download PDFInfo
- Publication number
- CN111435584A CN111435584A CN201811586537.5A CN201811586537A CN111435584A CN 111435584 A CN111435584 A CN 111435584A CN 201811586537 A CN201811586537 A CN 201811586537A CN 111435584 A CN111435584 A CN 111435584A
- Authority
- CN
- China
- Prior art keywords
- display lamp
- line
- scanning
- preset
- lamp array
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
Abstract
The application relates to an information display lamp and a display control device and method thereof, when detecting that a preset emergency condition is met, outputting a scanning signal to a display lamp array according to a preset line scanning period, and scanning the display lamp array; and when the preset power-saving lighting condition is detected to be met, adjusting the duty ratio of the scanning signal in the line scanning period to reduce the brightness of the display lamp array. By controlling the duty ratio of the scanning signal in the scanning period, the display lamp array has different display brightness when meeting the emergency condition and meeting the power-saving lighting condition, the brightness of the display lamp array is adjusted, the information display lamp has display brightness change under different conditions, the indicating effect is more obvious, and the use reliability is improved.
Description
Technical Field
The application relates to the technical field of display control, in particular to an information display lamp and a display control device and method thereof.
Background
With the development of society and the continuous progress of science and technology, people pay more and more attention to public safety. The emergency lamp is widely applied to places such as schools, units, communities and the like as an information display lamp, provides guidance for users by displaying related information, such as guidance of escape directions and the like in case of fire, and is used for emergency evacuation indication in fire fighting.
When the traditional information display lamp works, the display lamp is controlled to be lightened through the controller according to the preset brightness. Because the information display lamp is continuously displayed with the same brightness, the indicating effect is poor, and people cannot be effectively guided to evacuate. The traditional information display lamp has the defect of poor use reliability.
Disclosure of Invention
In view of the above, it is desirable to provide an information display lamp with high reliability, and a display control device and method thereof.
A display control apparatus of an information display luminaire, comprising: the line scanning driving circuit is used for connecting a display lamp array of an information display lamp;
the line scanning controller is used for controlling the line scanning driving circuit to output scanning signals to the display lamp array according to a preset line scanning period and scan the display lamp array when detecting that a preset emergency condition is met; and the control circuit is also used for controlling the line scanning driving circuit to adjust the duty ratio of a scanning signal in a line scanning period when the preset electricity-saving lighting condition is detected to be met, so as to reduce the brightness of the display lamp array.
A display control method of an information display lamp comprises the following steps:
when the condition that the preset emergency condition is met is detected, outputting a scanning signal to a display lamp array of an information display lamp according to a preset line scanning period, and scanning the display lamp array;
and when the preset power-saving lighting condition is detected to be met, adjusting the duty ratio of a scanning signal in a line scanning period to reduce the brightness of the display lamp array.
An information display lamp comprises a display lamp array and the display control device.
According to the information display lamp and the display control device and method thereof, when the condition that the information display lamp accords with the preset emergency condition is detected, the scanning signal is output to the display lamp array according to the preset line scanning period, and the display lamp array is scanned; and when the preset power-saving lighting condition is detected to be met, adjusting the duty ratio of the scanning signal in the line scanning period to reduce the brightness of the display lamp array. By controlling the duty ratio of the scanning signal in the scanning period, the display lamp array has different display brightness when meeting the emergency condition and meeting the power-saving lighting condition, the brightness of the display lamp array is adjusted, the information display lamp has display brightness change under different conditions, the indicating effect is more obvious, and the use reliability is improved.
Drawings
FIG. 1 is a block diagram of a display control device of an information display lamp according to an embodiment;
FIG. 2 is a block diagram of a display control device of an information display lamp according to another embodiment;
FIG. 3 is a schematic diagram of a display control device of an information display lamp according to an embodiment;
FIG. 4 is a schematic diagram of the structure of a row scan controller and a row scan driving circuit in one embodiment;
FIG. 5 is a schematic diagram of a column control circuit according to an embodiment;
FIG. 6 is a schematic diagram of a display lamp array according to an embodiment;
FIGS. 7 and 8 are schematic diagrams of brightness adjustment in one embodiment;
FIG. 9 is a schematic diagram of a scan timer interrupt in one embodiment;
fig. 10 is a flowchart of a display control method of an information display lamp according to an embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, a display control device of an information display lamp is provided, and the information display lamp can be an emergency lamp and the like. As shown in fig. 1, the display control apparatus includes a line scan controller 110 and a line scan driving circuit 120, the line scan controller 110 is connected to the line scan driving circuit 120, and the line scan driving circuit 120 is used for connecting a display lamp array 210 of an information display lamp. The line scan controller 110 is configured to control the line scan driving circuit 120 to output a scan signal to the display lamp array 210 according to a preset line scan period to scan the display lamp array 210 when it is detected that the preset emergency condition is met. The line scan controller 110 is further configured to control the line scan driving circuit 120 to adjust a duty ratio of a scan signal in a line scan period to decrease the brightness of the display lamp array 210 when it is detected that the preset power-saving lighting condition is met.
Specifically, when it is required to control the display lamp array 210 of the information display lamp to be turned on, the line scan controller 110 outputs a control instruction to the line scan driving circuit 120 to control the line scan driving circuit 120 to output a scan signal according to a preset line scan period to scan the display lamp array 210, and adjusts the duty ratio of the scan signal in the scan period in combination with the detected satisfied condition to change the brightness of the display lamp array 210. The line scanning period refers to a scanning period for each line of display lamps in the display lamp array 210, and the specific value is not unique and can be adjusted according to actual conditions. The scan signal is transmitted to the display lamp array 210 in the line scan period, and the turn-on time of the display lamp array 210 is controlled in combination with the duty ratio adjustment, thereby realizing the brightness adjustment.
The adjusting of the duty ratio of the scanning signal in the line scanning period to reduce the brightness of the display lamp array 210 means that the ratio of the level controlling the lighting of the display lamps in the corresponding line in the scanning period to the whole scanning period is reduced by performing level control on the output scanning signal, so that the lighting time of the display lamps in each line in the scanning period is reduced, and the brightness of the display lamp array 210 is reduced. The scanning signal output by the line scanning driving circuit 120 may specifically be to control the display lamp to be turned on at a high level and to control the display lamp to be turned off at a low level; the display lamp may be controlled to be turned on at a low level and to be turned off at a high level. In one embodiment, the line scan controller 110 controls the line scan driving circuit 120 to output a low level to turn on the display lamp in the line scan period when it is detected that the preset emergency condition is met, that is, controls the display lamp to turn on in the emergency mode in the whole scan period to highlight the display lamp array 210. When detecting that the preset power-saving lighting condition is met, the line scan controller 110 controls the line scan driving circuit 120 to reduce the proportion of the low level in the scanning period, so that the brightness of the display lamp array 210 is reduced in the power-saving lighting mode, and energy is saved.
The specific contents of the emergency condition and the power-saving lighting condition are not unique and can be set according to actual requirements. In one embodiment, the emergency condition includes receiving an emergency control command and the power saving lighting condition includes receiving a power saving control command. Specifically, the operator may switch the modes of the information display lamp by sending a control command to the line scan controller 110. When the information display lamp needs to be controlled to enter the emergency mode, an operator can send an emergency control instruction to the line scanning controller 110 through the control terminal to control the information display lamp to enter the emergency mode, and the display lamp array 210 highlights. When the information display lamp needs to be controlled to enter the power-saving lighting mode, an operator can send a power-saving control instruction to the line scanning controller 110 through the control terminal to control the information display lamp to enter the power-saving lighting mode, so that the brightness of the display lamp array 210 is reduced. An operator can send a corresponding control instruction according to actual requirements to adjust the mode of controlling the information display lamp, and the operation is simple, convenient and quick.
Further, the control terminal and the line scan controller 110 may communicate in a wired or wireless manner. In one embodiment, the display control device further includes a wireless communication device connected to the line scan controller 110, and the line scan controller 110 receives the control command transmitted by the control terminal through the wireless communication device. The mode of controlling the information display lamp in a wireless mode is controlled, and the operation convenience is further improved.
In another embodiment, the emergency condition comprises detecting a power outage in the power supply network and the power saving ignition condition comprises detecting that the power supply network is not powered down. Specifically, the line scan controller 110 may be connected to a power supply network, which may be powered off when an emergency such as a fire or earthquake occurs. When the power failure of the power supply network is detected, the information display lamp is controlled to enter an emergency mode, and the display lamp array 210 highlights, so that escape guidance is provided for people. When the power supply network is normal, the information display lamp can be controlled to be in the power-saving lighting mode, energy consumption is reduced, and the indicating effect of the information display lamp can be improved through brightness change in different modes.
In the embodiment, the mode switching of the information display lamp is directly carried out according to the power supply state of the power supply network, so that the information display lamp has the function of displaying brightness change under different conditions, and is timely switched into highlight display under emergency conditions to provide guidance for people, and the operation is more reliable.
In another embodiment, the contingency condition comprises the detected ambient temperature being less than a preset temperature threshold and the power saving lighting condition comprises the detected ambient temperature being greater than or equal to the preset temperature threshold. The specific value of the preset temperature threshold is not unique, specifically, the display control device may include a temperature sensor connected to the line scanning controller 110, the temperature sensor detects information to display the ambient temperature of the lamp, generates a sensing signal and sends the sensing signal to the line scanning controller 110, and the line scanning controller 110 obtains the ambient temperature according to the sensing signal. When the ambient temperature is lower than the preset temperature threshold, it may be considered to be at night, the line scanning controller 110 controls the information display lamp to enter the emergency mode, and the display lamp array 210 highlights so that people can clearly see the information displayed by the information display lamp. When the ambient temperature is less than or equal to the preset temperature threshold, it can be considered as being in the daytime, and the line scanning controller 110 controls the information display lamp to be in the power-saving lighting mode, so as to reduce energy consumption.
In the embodiment, the mode switching is performed by sensing the environment information of the information display lamp, so that the display mode can be automatically switched according to the environment, and the operation reliability of the information display lamp can be improved.
When the information display lamp is in different modes, the line scan controller 110 controls the line scan driving circuit 120 to output a scan signal to scan the display lamp array 210. The specific manner of scanning the display lamp array 210 is not limited to one, and may be progressive scanning or interlaced scanning. In one embodiment, the line scan controller 110 controls the line scan driving circuit 120 to interlace the display lamp array 210, so as to ensure that the display lamp array 210 has better display effect.
When it is necessary to control the information display lamp to enter the power-saving lighting mode, the specific way in which the row scan controller 110 controls the row scan driving circuit 120 to adjust the duty ratio of the scan signal in the row scan period is not unique. In one embodiment, the line scan controller 110 controls the line scan driving circuit 120 to adjust the duty ratio of the scan signal in the line scan period according to a preset power-saving brightness threshold when detecting that the preset power-saving lighting condition is met. The specific value of the power saving brightness threshold is not unique, and in one embodiment, the power saving brightness threshold can be set to be one fifth of the brightness of the information display lamp when highlighted in the emergency mode. Specifically, the row scan controller 110 can control the low level of the scan signal output by the row scan driving circuit 120 to account for one fifth of the whole scan period, so that the display lamps in each row of the display lamp array 210 are only lighted within one fifth of the scan period, thereby achieving the purpose of reducing the brightness of the display lamp array 210. Further, in this embodiment, the scanning signal output by the row scanning driving circuit 120 is at a low level for a period of one fifth of the scanning period from the start time of the scanning period. The display control is simple, convenient and reliable by controlling the display lamps of each row to light in the initial time period of the display period.
Further, in one embodiment, the line scan controller 110 is further configured to receive a brightness threshold adjustment instruction, and adjust the power-saving brightness threshold according to the brightness threshold adjustment instruction. Similarly, an operator can also send a brightness threshold adjusting instruction to the line scanning controller 110 through the control terminal to adjust the stored power-saving brightness threshold, so that the operator can change the display brightness of the information display lamp in the power-saving lighting mode according to actual requirements, and the use convenience of the information display lamp is improved.
In another embodiment, the line scan controller 110 controls the line scan driving circuit to adjust the duty ratio of the scan signal in the line scan period according to a preset brightness adjustment amplitude when detecting that the preset power-saving lighting condition is met. Likewise, the specific value of the brightness adjustment amplitude is not unique. When the information display lamp needs to be controlled to enter the power-saving lighting mode, the duty ratio of the scanning signal is changed according to the preset brightness adjusting amplitude, so that the brightness of the display lamp array 210 is reduced. For example, the brightness of the display lamp array 210 may be decreased by decreasing the proportion of the low level of the scanning signal in the scanning period time, and 1/2 or 4/5 of the brightness of the information display lamp in the emergency mode, or the like, as the brightness adjustment range. In addition, the operator can also send a command to the line scan controller 110 to adjust the brightness adjustment range.
In one embodiment, as shown in FIG. 2, the display control apparatus further comprises a column control circuit 130 coupled to the array of display lamps 210. The column control circuit 130 is used for sending data to the display lamp array 210 when the row scanning driving circuit 120 outputs a scanning signal to scan the display lamp array 210. Specifically, the column control circuit 130 controls the on/off of the display lamps in the display lamp array 210 by sending data to the display lamps in the corresponding column in combination with the scan signal output by the row scan driving circuit 120. When the scanning signal output from the row scanning driving circuit 120 scans the display lamps in a certain row, the column control circuit 130 sends data to the display lamps in all columns, so that the display lamps in the row being scanned are fully or partially turned on. After the scanning of the whole display lamp array 210 is completed, the corresponding information such as characters or patterns can be displayed on the display lamp array 210, so as to guide people to escape. Further, as shown in fig. 3, the number of the row scan controller 110, the row scan driving circuit 120 and the column control circuit 130 is not only one, but may be one, or two or more, and is specifically adjusted according to the number of the display lamps in the display lamp array 210.
It is understood that the specific type and structure of the row scan controller 110, the row scan driving circuit 120 and the column control circuit 130 are not unique, and as shown in fig. 4, the row scan controller 110 employs a control chip IC 8. specifically, the control chip IC8 may be a serial-in and parallel-out chip with a model number of 74HC 595. in one embodiment, the row scan driving circuit 120 includes two or more row driving units, and each row driving unit is connected to the row scan controller 110 and respectively connected to the display lamps of the corresponding row in the display lamp array 210. the specific type of the display lamp array 210 is also not unique, and in one embodiment, the display lamp array 210 is a L (ED L light Emitting Diode) matrix.
The type and number of ROW driver units are not exclusive, as shown in fig. 4, a ROW driver unit may specifically include a driver chip IC7, a driver chip IC9, a driver chip IC10 and a driver chip IC11, each driver chip is connected to a controller chip IC8, and each driver chip is connected to two ROWs L ED lamps in L ED matrix, respectively.
It is to be understood that the L ED matrix is not limited to being designed as a matrix of 8 ROWs and 16 columns, as shown in FIG. 6, the L ED matrix is a small matrix of 4X4, and is composed of L0 ED lamps D28-L1 ED D31, L2 ED lamps D63-L3 ED lamps D66, L4 ED lamps D98-L5 ED lamps D101 and L ED lamps D133-L ED 136. the ROWs of the L ED matrix are connected to the ROW scan driver circuit 120 through ports L ED _ ROW 1-L ED _ ROW4, and the columns of the L ED matrix are connected to the column controller circuit 130.4X 4 through ports L ED _ G1-L ED _ G4, and the control steps of the small matrix are as follows:
l ED _ ROW1 voltage is electrified by 5V, and simultaneously L ED _ ROW2, L ED _ ROW3 and L ED _ ROW4 are 0, and data needed by the first ROW is sent to L ED _ G1, L ED _ G2, L ED _ G3 and L ED _ G4.
L ED _ ROW2 voltage is electrified by 5V, and simultaneously L ED _ ROW1, L ED _ ROW3 and L ED _ ROW4 are 0, and data required by the second ROW is sent to L ED _ G1, L ED _ G2, L ED _ G3 and L ED _ G4.
L ED _ ROW3 voltage is electrified by 5V, and simultaneously L ED _ ROW1, L ED _ ROW2 and L ED _ ROW4 are 0, and data needed by the third ROW is sent to L ED _ G1, L ED _ G2, L ED _ G3 and L ED _ G4.
L ED _ ROW4 voltage is electrified by 5V, meanwhile L ED _ ROW1, L ED _ ROW2 and L ED _ ROW3 are 0, and data needed by the fourth ROW is sent to L ED _ G1, L ED _ G2, L ED _ G3 and L ED _ G4.
For the whole L ED matrix, the on-off of each line is controlled by the 74HC595 chips which are connected in parallel respectively to scan the whole screen, in order to achieve good effect, the scanning lines are interlaced, for example, the lines 1,3,5,7,9 are scanned first, and then the lines 2,4,6,8,10 are scanned.
Fig. 7 and 8 show the principle of brightness adjustment, in which a 74HC595 chip adjusts the duty ratio of the scanning signal to change the brightness signal in the scanning period, so as to adjust the brightness, each row of the L ED matrix has a fixed display period, and all the 32 rows are scanned to be one screen scanning period, for example, the scanning period of a row of L ED lamps is 0.5ms, then the time for all the 32 rows to be scanned is 16ms, and the frame frequency is 1000/16 to 62.5 HZ.
The brightness signal is the time for controlling the on-state in each line time of each period, if the scanning period is 0.5ms, all points are lighted, the whole screen is brightest, and if only 0.1ms is lighted in the scanning period of 0.5ms, the brightness is only 1/5. As shown in fig. 8, the time of the scanning period T1 is 0.5ms, and the time of the display time T1 is 0.05ms, the brightness becomes dark. When the 74HC595 chip performs line scanning, a scanning timer interrupt method is adopted, the interrupt time is 100us, and fig. 9 is a schematic diagram of the scanning timer interrupt.
According to the display control device of the information display lamp, the duty ratio of the scanning signal in the scanning period is controlled, so that the display lamp array 210 has different display brightness when meeting the emergency condition and meeting the power-saving lighting condition, the brightness of the display lamp array 210 is adjusted, the information display lamp has display brightness change under different conditions, the indicating effect is more obvious, and the use reliability is improved.
In one embodiment, a display control method of an information display lamp is provided, and the information display lamp can be an emergency lamp and the like. As shown in fig. 10, the method includes:
step S110: when the condition that the preset emergency condition is met is detected, a scanning signal is output to a display lamp array of the information display lamp according to the preset line scanning period, and the display lamp array is scanned.
When the display lamp array of the information display lamp needs to be controlled to be lightened, the control instruction can be output to the line scanning driving circuit through the line scanning controller so as to control the line scanning driving circuit to output a scanning signal according to a preset line scanning period to scan the display lamp array. The line scanning period refers to a scanning period of each line of display lamps in the display lamp array, and specific values are not unique and can be adjusted according to actual conditions. In one embodiment, when the preset emergency condition is detected to be met, the low level is output to enable the display lamp to be lightened in the line scanning period, namely the display lamp is controlled to be lightened in the whole scanning period in the emergency mode, and the display lamp array is highlighted.
Step S120: and when the preset power-saving lighting condition is detected to be met, adjusting the duty ratio of the scanning signal in the line scanning period to reduce the brightness of the display lamp array.
The adjustment of the duty ratio of the scanning signal in the line scanning period to reduce the brightness of the display lamp array means that the proportion of the level for controlling the lighting of the display lamps in the corresponding line in the scanning period to the whole scanning period is reduced by performing level control on the output scanning signal, so that the lighting time of the display lamps in each line in the scanning period is reduced, and the brightness of the display lamp array is reduced. When the condition that the preset electricity-saving lighting condition is met is detected, the proportion of low level in the scanning period is reduced, so that the brightness of the display lamp array is reduced in the electricity-saving lighting mode, and the energy is saved.
The specific contents of the emergency condition and the power-saving lighting condition are not unique and can be set according to actual requirements. In one embodiment, the emergency condition includes receiving an emergency control command and the power saving lighting condition includes receiving a power saving control command. In another embodiment, the emergency condition comprises detecting a power outage in the power supply network and the power saving ignition condition comprises detecting that the power supply network is not powered down. In another embodiment, the contingency condition comprises the detected ambient temperature being less than a preset temperature threshold and the power saving lighting condition comprises the detected ambient temperature being greater than or equal to the preset temperature threshold.
When the information display lamp is in different modes, scanning signals are output to scan the display lamp array. The specific manner of scanning the display lamp array is not limited to one, and the scanning may be progressive scanning or interlaced scanning. In one embodiment, the line scanning controller controls the line scanning driving circuit to perform interlaced scanning on the display lamp array, so as to ensure that the display lamp array has a better display effect.
When it is necessary to control the information display lamp to enter the power-saving lighting mode, the specific way in which the row scan controller controls the row scan driving circuit to adjust the duty ratio of the scan signal in the row scan period is not unique. In one embodiment, step S120 includes: and when the condition that the preset power-saving lighting condition is met is detected, controlling the line scanning driving circuit to adjust the duty ratio of the scanning signal in the line scanning period according to a preset power-saving brightness threshold value. The specific value of the power saving brightness threshold is not unique, and in one embodiment, the power saving brightness threshold can be set to be one fifth of the brightness of the information display lamp when highlighted in the emergency mode. Further, in an embodiment, after the step S120, the method may further include the step of receiving a brightness threshold adjustment instruction, and adjusting the power saving brightness threshold according to the brightness threshold adjustment instruction.
In another embodiment, step S120 includes: and when the preset power-saving lighting condition is detected to be met, controlling the line scanning driving circuit to adjust the duty ratio of the scanning signal in the line scanning period according to the preset brightness adjustment amplitude. Likewise, the specific value of the brightness adjustment amplitude is not unique. When the information display lamp needs to be controlled to enter the power-saving lighting mode, the duty ratio of the scanning signal is changed according to the preset brightness adjusting amplitude, so that the brightness of the display lamp array 210 is reduced.
For specific limitations of the display control method of the information display lamp, reference may be made to the above limitations of the display control device of the information display lamp, and details are not repeated here.
According to the display control method of the information display lamp, the duty ratio of the scanning signal in the scanning period is controlled, so that the display lamp array has different display brightness when meeting the emergency condition and meeting the power-saving lighting condition, the brightness of the display lamp array is adjusted, the information display lamp has display brightness change under different conditions, the indicating effect is more obvious, and the use reliability is improved.
The information display lamp comprises a display lamp array and the display control device, wherein the display lamp array can adopt an L ED matrix.
According to the information display lamp, the duty ratio of the scanning signal in the scanning period is controlled, so that the display lamp array has different display brightness when meeting the emergency condition and meeting the power-saving lighting condition, the brightness of the display lamp array is adjusted, the information display lamp has display brightness change under different conditions, the indicating effect is more obvious, and the use reliability is improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A display control device of an information display lamp, comprising: the line scanning driving circuit is used for connecting a display lamp array of an information display lamp;
the line scanning controller is used for controlling the line scanning driving circuit to output scanning signals to the display lamp array according to a preset line scanning period and scan the display lamp array when detecting that a preset emergency condition is met; and the control circuit is also used for controlling the line scanning driving circuit to adjust the duty ratio of a scanning signal in a line scanning period when the preset electricity-saving lighting condition is detected to be met, so as to reduce the brightness of the display lamp array.
2. The display control apparatus according to claim 1, wherein the emergency condition includes reception of an emergency control instruction, and the power-saving lighting condition includes reception of a power-saving control instruction; or
The emergency condition comprises detecting a power supply network outage, and the power saving lighting condition comprises detecting that the power supply network outage is not powered off; or
The emergency condition includes that the detected ambient temperature is less than a preset temperature threshold, and the power-saving lighting condition includes that the detected ambient temperature is greater than or equal to the preset temperature threshold.
3. The display control apparatus according to claim 1, wherein the line scan controller controls the line scan driving circuit to perform interlaced scanning or progressive scanning on the display lamp array.
4. The display control device according to claim 1, wherein the line scan controller controls the line scan driving circuit to adjust a duty ratio of a scan signal in a line scan period according to a preset power-saving luminance threshold value when it is detected that a preset power-saving lighting condition is met.
5. The display control device according to claim 4, wherein the line scan controller is further configured to receive a brightness threshold adjustment instruction, and adjust the power saving brightness threshold according to the brightness threshold adjustment instruction.
6. The display control device according to claim 1, wherein the line scan controller controls the line scan driving circuit to adjust a duty ratio of the scan signal in a line scan period according to a preset brightness adjustment range when it is detected that a preset power saving lighting condition is met.
7. The display control device according to any one of claims 1 to 6, wherein the line scanning driving circuit includes two or more line driving units, and each line driving unit is connected to the line scanning controller and is respectively connected to the display lamps in a corresponding line of the display lamp array.
8. The display control device according to any one of claims 1 to 6, further comprising a column control circuit connected to the display lamp array.
9. A display control method of an information display lamp is characterized by comprising the following steps:
when the condition that the preset emergency condition is met is detected, outputting a scanning signal to a display lamp array of an information display lamp according to a preset line scanning period, and scanning the display lamp array;
and when the preset power-saving lighting condition is detected to be met, adjusting the duty ratio of a scanning signal in a line scanning period to reduce the brightness of the display lamp array.
10. An information display luminaire comprising an array of display lights and a display control apparatus as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811586537.5A CN111435584A (en) | 2018-12-25 | 2018-12-25 | Information display lamp and display control device and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811586537.5A CN111435584A (en) | 2018-12-25 | 2018-12-25 | Information display lamp and display control device and method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111435584A true CN111435584A (en) | 2020-07-21 |
Family
ID=71579694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811586537.5A Pending CN111435584A (en) | 2018-12-25 | 2018-12-25 | Information display lamp and display control device and method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111435584A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5283197A (en) * | 1975-12-31 | 1977-07-11 | Matsushita Electric Works Ltd | Evacuation guiding lamp |
| CN203118409U (en) * | 2012-10-17 | 2013-08-07 | 南京信息工程大学 | Self-adapting brightness adjusting LED display system |
| CN203193976U (en) * | 2013-04-07 | 2013-09-11 | 浙江科瑞电子科技有限公司 | Fire-fighting evacuation indicating lamp provided with sound-controllable brightness |
| CN104392698A (en) * | 2014-12-17 | 2015-03-04 | 广州新视界光电科技有限公司 | LED display device and LED screen brightness uniformity regulating method |
| CN204375362U (en) * | 2015-01-19 | 2015-06-03 | 湖南汇博电子技术有限公司 | A kind of fire-fighting evacuation pilot lamp |
| KR20150067427A (en) * | 2013-12-10 | 2015-06-18 | 썬메디텍 (주) | Guidance lighting system equipped with emergency exit direction guiding function |
| CN105355152A (en) * | 2014-08-18 | 2016-02-24 | 黄鑫富 | Anti-dazzling intelligent dimming triangular warning board |
| CN205807221U (en) * | 2016-07-08 | 2016-12-14 | 皖西学院 | A kind of rechargeable LED extra exit emergency light |
| CN209418108U (en) * | 2018-12-25 | 2019-09-20 | 湖南汇博电子科技股份有限公司 | Information shows that the display control unit of lamps and lanterns, information show lamps and lanterns |
-
2018
- 2018-12-25 CN CN201811586537.5A patent/CN111435584A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5283197A (en) * | 1975-12-31 | 1977-07-11 | Matsushita Electric Works Ltd | Evacuation guiding lamp |
| CN203118409U (en) * | 2012-10-17 | 2013-08-07 | 南京信息工程大学 | Self-adapting brightness adjusting LED display system |
| CN203193976U (en) * | 2013-04-07 | 2013-09-11 | 浙江科瑞电子科技有限公司 | Fire-fighting evacuation indicating lamp provided with sound-controllable brightness |
| KR20150067427A (en) * | 2013-12-10 | 2015-06-18 | 썬메디텍 (주) | Guidance lighting system equipped with emergency exit direction guiding function |
| CN105355152A (en) * | 2014-08-18 | 2016-02-24 | 黄鑫富 | Anti-dazzling intelligent dimming triangular warning board |
| CN104392698A (en) * | 2014-12-17 | 2015-03-04 | 广州新视界光电科技有限公司 | LED display device and LED screen brightness uniformity regulating method |
| CN204375362U (en) * | 2015-01-19 | 2015-06-03 | 湖南汇博电子技术有限公司 | A kind of fire-fighting evacuation pilot lamp |
| CN205807221U (en) * | 2016-07-08 | 2016-12-14 | 皖西学院 | A kind of rechargeable LED extra exit emergency light |
| CN209418108U (en) * | 2018-12-25 | 2019-09-20 | 湖南汇博电子科技股份有限公司 | Information shows that the display control unit of lamps and lanterns, information show lamps and lanterns |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8884941B2 (en) | Display system and power control method thereof | |
| KR100231505B1 (en) | Pager | |
| EP2453296A1 (en) | Liquid crystal display device | |
| CN212064447U (en) | LED lighting control system of train | |
| CN106713760A (en) | Terminal, and LED lamp control display system and method | |
| CN211240225U (en) | Intelligent atmosphere lamp for electronic screen | |
| CN108382292A (en) | The first car light controller of one kind, car lamp control system and vehicle light control method | |
| JP5630778B2 (en) | Information display device | |
| CN209418108U (en) | Information shows that the display control unit of lamps and lanterns, information show lamps and lanterns | |
| CN209930554U (en) | Information display lamp and information display control device thereof | |
| CN111435584A (en) | Information display lamp and display control device and method thereof | |
| KR101801621B1 (en) | Apparatus for traffic sign using mobile device | |
| CN106791105A (en) | Control the method and mobile terminal of warning light | |
| CN201323695Y (en) | Reading lamp automatic light regulating device | |
| JPH09175232A (en) | Monitoring device for vehicle | |
| CN111372354B (en) | Information display lamp and information display control device and method thereof | |
| CN202905111U (en) | A dynamic taxi indicator using a LED with full dot matrix | |
| JP3139949B2 (en) | Information display device | |
| RU2325704C2 (en) | Method of three-section road traffic light operation | |
| CN211240170U (en) | Sign lamp and display control device thereof | |
| JPH01218130A (en) | Power supply display system for radio equipment | |
| CN110992916B (en) | Display terminal, control method and computer-readable storage medium | |
| NL2030341B1 (en) | Traffic signal lamp capable of intelligently adjusting brightness | |
| CN215182987U (en) | LED brightness control circuit applied to head-up display of agricultural machinery travelling crane | |
| KR100266812B1 (en) | Led driving apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |