CN114255603B - LED display screen display method, control device and system applied to traffic - Google Patents
LED display screen display method, control device and system applied to traffic Download PDFInfo
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- CN114255603B CN114255603B CN202111643408.7A CN202111643408A CN114255603B CN 114255603 B CN114255603 B CN 114255603B CN 202111643408 A CN202111643408 A CN 202111643408A CN 114255603 B CN114255603 B CN 114255603B
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- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
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- 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]
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Abstract
The invention relates to the technical field of road traffic display, and particularly discloses a display method, a control device and a system of an LED display screen applied to traffic, wherein the method comprises the following steps: presetting and storing a program to be displayed by an LED display screen; acquiring a traffic pulse signal; analyzing the traffic pulse signals, obtaining the channel quantity information, the channel number information and the signal type in the traffic pulse signals, and matching with the program names; matching corresponding program content according to the program name, and generating a display control instruction for displaying the program content; and sending the display control instruction to the LED display screen. According to the invention, the content to be displayed by the LED display screen can be rapidly determined, so that the LED display screen can synchronously display the prompt content when the traffic light correspondingly displays the traffic pulse signal, a driver can prepare in advance according to the content displayed by the LED, the driving experience of the driver is improved, and the traffic efficiency is also improved.
Description
Technical Field
The invention relates to the technical field of road traffic display, in particular to a display method, a control device and a system of an LED display screen applied to traffic.
Background
In order to further improve the traffic order of the motor vehicle, at present, an LED display screen is arranged at a traffic intersection to display some text prompt information, so that the motor vehicle driver is prompted to drive, wait or stop in combination with the state of a traffic light, for example, the following indication effects are achieved: when the direct-drive lamp in the north-south direction lights a green light, the left-turn lamp is a red light, the LED display screen in the north-south direction displays that a left-turn vehicle enters a waiting area, the direct-drive lamp in the east-west direction and the left-turn lamp are both lighted the red light, the LED display screen in the east-west direction displays that a traffic police reminds attention to traffic safety, and when the direct-drive lamp in the north-south direction lights the red light, the left-turn lamp is a green light, the LED display screen in the north-south direction displays that the traffic police reminds attention to traffic safety, the direct-drive lamp in the east-west direction and the left-turn lamp are both lighted the red light, and the LED display screen in the east-west direction displays that an executive vehicle enters the waiting area.
The realization of the process needs to analyze and identify the pulse signal of the traffic light through the playing box, but the information interaction between the playing box and the traffic light in the prior art has a plurality of barriers, and particularly for multipath signals, the problem is particularly obvious, the situation that the updating speed of the display content of the LED display screen is slow or the display content is not directly displayed often occurs, and under the application scene, the judgment of a vehicle owner can be influenced, so that corresponding preparation cannot be made in advance.
Therefore, a new solution to the above-mentioned problems is needed for those skilled in the art.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a display method, a control device and a system for an LED display screen applied to traffic.
The invention discloses a display method of an LED display screen applied to traffic, which comprises the following steps:
presetting and storing a program to be displayed by an LED display screen; the program comprises a program name and program content, wherein the program name comprises channel number information, channel number information and signal types;
acquiring a traffic pulse signal;
analyzing the traffic pulse signals, obtaining the channel quantity information, the channel number information and the signal type in the traffic pulse signals, and matching with the program names;
matching corresponding program content according to the program name, and generating a display control instruction for displaying the program content;
and sending the display control instruction to the LED display screen.
Further, the program name includes channel number information, channel number information and signal type, and is:
the program names include a program name x_0 and a program name x_1 when the number of channels is 1; x is the channel number, the matched traffic pulse signal is red light when the signal type is 0, and the matched traffic pulse signal is green light when the signal type is 1.
Further, the program name also comprises a program name X_2 when the number of channels is 1, and the matched traffic pulse signal is a yellow light in a set time period after the green light is ended when the signal type is 2.
Further, the program name includes channel number information, channel number information and signal type, and is:
the program names include a program name xy_00, a program name xy_01, a program name xy_10, and a program name xy_11 when the number of channels is 2; x and Y are the channel numbers of two channels respectively, the traffic pulse signal matched when the signal type is 00 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 01 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 10 is that the straight running light of the side direction is on the green light, the traffic pulse signal matched when the signal type is 11 is that the straight running light of the side direction is on the green light, and the left turning light of the side direction is on the green light.
Further, matching corresponding program content according to the program name, and generating a display control instruction for displaying the program content, including:
and according to the program name XY_00, the program name XY_01, the program name XY_10 and the program name XY_11, the program content of the LED display screen on the side and the program content of the LED display screen on the opposite side are matched, and display control instructions of the LED display screen on the side and the LED display screen on the opposite side are respectively generated.
Further, the program content of the LED display screen on the side with the matched program name XY_00 is "traffic police reminds attention to traffic safety", and the program content of the LED display screen on the opposite side with the matched program name is "straight vehicles enter a waiting area" or "left-turning vehicles enter the waiting area";
the program content of the LED display screen on the side matched with the program name XY_01 is that a straight vehicle enters a waiting area, and the program content of the LED display screen on the opposite side matched with the program name XY_01 is that traffic police reminds attention to traffic safety;
the program content of the LED display screen on the side matched with the program name XY_10 is that a left-turning vehicle enters a waiting area, and the program content of the LED display screen on the opposite side matched with the program name XY_10 is that traffic police reminds attention to traffic safety;
the matched side LED display screen of the program name XY_11 has no program content, and the matched side LED display screen has no program content.
Further, obtaining and analyzing a program to be displayed by a preset LED display screen, including:
determining a playing box number index from the program name;
uploading the playing box number index to a database;
adding a playing box number update notification logic, registering a ContentObserver in a communication function, and monitoring the updating of the stored playing box number index in a database; the stored playing box number is obtained by storing the playing box number index through a field with the newly added key being index_key in the database.
The invention also comprises an LED display screen display control device applied to traffic, wherein the display control device comprises a program preset module, a traffic pulse signal acquisition module, a program name matching module and a display control instruction generation module, wherein:
the program presetting module is connected with the program name matching module and is used for presetting and storing programs to be displayed by the LED display screen; the program comprises a program name and program content, wherein the program name comprises channel number information, channel number information and signal types;
the traffic pulse signal acquisition module is connected with the program name matching module and is used for acquiring traffic pulse signals;
the program name matching module is connected with the program presetting module, the traffic pulse signal acquisition module and the display control instruction generation module, and is used for analyzing the traffic pulse signal, acquiring the channel number information, the channel number information and the signal type in the traffic pulse signal and matching with the program name;
the display control instruction generation module is connected with the program name matching module and is used for matching corresponding program contents according to the program names and generating display control instructions for displaying the program contents; and sending the display control instruction to the LED display screen.
The invention also comprises an LED display screen display system applied to traffic, wherein the display system comprises the display control device according to claim 8, a traffic signal and a plurality of LED display screens, and the display system comprises the traffic signal and a plurality of LED display screens, wherein:
the traffic signal machine is in communication connection with the display control device and is used for generating traffic pulse signals;
the display control device is in communication connection with the LED display screen and the traffic signal machine, and is used for acquiring traffic pulse signals, generating display control instructions for displaying corresponding program contents and sending the display control instructions to the LED display screen;
the LED display screen is in communication connection with the display control device and is used for carrying out corresponding display according to the display control instruction.
Further, the display system also comprises a TCP client, the TCP client is in communication connection with the traffic signal machine and the display control device, and the TCP client is used for receiving and analyzing traffic pulse signals of the traffic signal machine and judging program contents corresponding to the next state according to the change rule of traffic pulse information;
the display control device generates a display control instruction corresponding to the program content in the next state of the traffic pulse signal according to the judging result of the TCP client.
According to the display method, the control device and the system for the LED display screen, which are applied to traffic, through presetting programs to be displayed on the LED display screen, the display control instructions can be quickly matched with traffic pulse signals, so that the corresponding display control instructions are generated and are displayed by the LED display screen, the content to be displayed on the LED display screen can be quickly determined no matter whether the channels are one-channel or multi-channel, the LED display screen can synchronously display prompt content when traffic signals are correspondingly displayed on the traffic lamp, a driver can prepare in advance according to the content displayed by the LED display screen, driving experience of the driver is improved, and traffic efficiency is also improved.
Drawings
For a clearer description of embodiments of the invention or of solutions in the prior art, the drawings which are used in the description of the embodiments or of the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of a display method of an LED display screen applied to traffic according to an embodiment of the present invention;
FIG. 2 is a flow chart of steps of a display method of an LED display screen for traffic according to another embodiment of the present invention;
FIG. 3 is a structural diagram of a display control device of an LED display screen applied to traffic according to an embodiment of the present invention;
FIG. 4 is a block diagram of an LED display system for traffic according to an embodiment of the present invention;
fig. 5 is a structural diagram of an LED display system for traffic according to another embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
The embodiment of the invention provides a display method of an LED display screen applied to traffic, as shown in fig. 1, comprising the following steps:
step S10: presetting and storing programs to be displayed by the LED display screen.
The program includes a program name and a program content, and the program name includes channel number information, channel number information and a signal type. The embodiment of the invention is provided with two implementation modes, one is a single-channel mode, and the other is a multi-channel mode. The method comprises the following steps:
the program names include a program name x_0 and a program name x_1 when the number of channels is 1; x is the channel number, the matched traffic pulse signal is red light when the signal type is 0, and the matched traffic pulse signal is green light when the signal type is 1.
Preferably, the program name further comprises a program name X_2 when the number of channels is 1, and the matched traffic pulse signal is a yellow light in a set time period after the green light is ended when the signal type is 2.
In this embodiment, "X" in the program name indicates that the number of channels is one, and also indicates that the number of channels is X, where the value of X may be from 0 to F (hexadecimal numbers, corresponding to 1 to 16 decimal numbers), and one channel number corresponds to one lamp.
In the multi-channel mode, taking a dual channel as an example:
the program names include a program name xy_00, a program name xy_01, a program name xy_10, and a program name xy_11 when the number of channels is 2; x and Y are channel numbers of two channels respectively, the matched traffic pulse signal is that one lamp is lighted red light and the other lamp is lighted red light when the signal type is 00, the matched traffic pulse signal is that one lamp is lighted red light and the other lamp is lighted green light when the signal type is 01, the matched traffic pulse signal is that one lamp is lighted green light and the other lamp is lighted red light when the signal type is 10, and the matched traffic pulse signal is that one lamp is lighted green light and the other lamp is lighted green light when the signal type is 11.
In this embodiment, "X" and "Y" in the program name indicate that the number of channels is two, and also indicate that the numbers of the two channels are X and Y, respectively, where the values of X and Y can be from 0 to F (hexadecimal numbers, corresponding to decimal numbers of 1 to 16), one channel number corresponds to one lamp, and two channel numbers correspond to two lamps, and two channels in this embodiment correspond to the present side straight lamp and the opposite side left turn lamp, respectively. The relationship between the "present side" and the "opposite side" in this embodiment can be understood as corresponding to the "east-west lane direction: the present side, "the north-south lane direction" corresponds to the "opposite side", or "the north-south lane direction" corresponds to the "present side", and "the east-west lane direction" corresponds to the "opposite side", both of which may be the corresponding modes, without affecting the logic of the subsequent embodiments.
Step S20: and acquiring a traffic pulse signal.
The traffic pulse signal is responded by a traffic light (or signal light), and the green light, the red light or the yellow light is correspondingly turned on. The traffic pulse signal of the embodiment is sent by the traffic signal machine controlling the signal lamp, and the execution main body of the method of the embodiment of the invention is a playing box controlling the display of the LED display screen, so that the playing box is in communication connection with the traffic signal machine, and the traffic signal machine can acquire the traffic pulse signal when sending the traffic pulse signal.
The traffic pulse signal is understood as a signal with a signal value of 0 or 1, the signal 1 is used for indicating that the green light is on, and the signal 0 is used for indicating that the red light is on.
Step S30: analyzing the traffic pulse signal, acquiring the channel quantity information, the channel number information and the signal type in the traffic pulse signal, and matching with the program name.
Because the traffic pulse signal is a signal with a value of 0 or 1, the signal 1 is used for indicating that the green light is on, and the signal 0 is used for indicating that the red light is on. Therefore, under the single channel in the embodiment of step S10, the program name x_0 and the program name x_1 are respectively matched with red light illumination and green light illumination, under the double channel, the program name xy_00 is matched with red light illumination of the side and red light illumination of the opposite side, the program name xy_01 is matched with red light illumination of the side and green light illumination of the opposite side, the program name xy_10 is matched with green light illumination of the side and red light illumination of the opposite side, and the program name xy_11 is matched with green light illumination of the side and green light illumination of the opposite side.
The embodiment of the invention does not particularly limit whether the lamps corresponding to the single channel and the multiple channels are straight lamps or left turn lamps, and one implementation mode is as follows:
under the single-channel mode, setting a channel number X to correspond to the straight line lamp at the side, if the channel number X is matched with the program name X_0 according to the traffic pulse signal, the straight line lamp at the side is lighted to be red, and if the channel number X is matched with the program name X_1 according to the traffic pulse signal, the straight line lamp at the side is lighted to be green; setting a channel number X to correspond to the left turn lamp of the side, if the channel number X is matched with the program name X_0 according to the traffic pulse signal, the left turn lamp of the side is turned on, and if the channel number X is matched with the program name X_1 according to the traffic pulse signal, the left turn lamp of the side is turned on to turn on a green lamp; the signal number X may correspond to a side lamp in addition to the present side lamp, and is not listed here.
Under the double-channel mode, setting a channel number X corresponding to the straight running lamp on the side, and setting a channel number Y corresponding to the left turning lamp on the side, wherein the channel number Y is matched with the program name XY_00 according to the traffic pulse signal, so that the straight running lamp on the side is lighted to be red, and the left turning lamp on the side is lighted to be red; according to the program name XY_01 matched by the traffic pulse signal, the straight running lamp at the side is lightened to a red lamp, and the left turning lamp at the opposite side is lightened to a green lamp; according to the program name XY_10 matched by the traffic pulse signal, the direct running lamp at the side is lightened to a green lamp, and the left turning lamp at the opposite side is lightened to a red lamp; and according to the program name XY_11 matched by the traffic pulse signal, the straight running lamp at the side is turned on to light a green lamp, and the left turning lamp at the opposite side is turned on to light a green lamp.
Step S40: and matching corresponding program contents according to the program names, and generating a display control instruction for displaying the program contents.
In the embodiment of the dual-channel mode, the channel number X corresponds to the present side straight running lamp, the channel number Y corresponds to the opposite side left turning lamp, and the step is to match the program content of the present side LED display screen and the program content of the opposite side LED display screen according to the program name xy_00, the program name xy_01, the program name xy_10 and the program name xy_11, and generate the display control instructions of the present side LED display screen and the opposite side LED display screen respectively.
In combination with traffic rules, in the embodiment of the dual channel mode, where the channel number X corresponds to the home side straight running light and the channel number Y corresponds to the side left turn light, this step will generate the following display control instructions:
the program content of the LED display screen on the side, matched with the program name XY_00, is "traffic police reminds attention to traffic safety", and the program content of the LED display screen on the opposite side, matched with the program name XY_00, is "straight vehicles enter a waiting area" or "left-turning vehicles enter the waiting area". The traffic pulse signal mode comprises two conditions: 1. when the side straight running lamp and the opposite side left turning lamp are both lighted with red light, the side left turning lamp is lighted with green light and the opposite side straight running lamp is lighted with red light, at this time, the program content of the LED display screen at the side is that traffic police reminds attention to traffic safety, and the program content of the LED display screen at the opposite side is that the straight running vehicle enters a waiting area; 2. when the side straight running lamp and the opposite side left turning lamp are both lighted with red light, the side left turning lamp is lighted with red light and the opposite side straight running lamp is lighted with green light, at this time, the program content of the LED display screen at the side is traffic police reminding attention to traffic safety, and the program content of the LED display screen at the opposite side is that the left turning vehicle enters the waiting area.
The program content of the matched side LED display screen of the program name XY_01 is that a straight vehicle enters a waiting area, and the program content of the matched side LED display screen is that a traffic police reminds attention to traffic safety.
The program content of the LED display screen on the side matched with the program name XY_10 is that a left-turning vehicle enters a waiting area, and the program content of the LED display screen on the opposite side matched with the program name XY_10 is that traffic police reminds attention to traffic safety.
The matched side LED display screen of the program name XY_11 has no program content, and the matched side LED display screen has no program content.
Step S50: and sending the display control instruction to the LED display screen.
The playing box sends a display control instruction to the LED display screen, and the LED display screen correspondingly displays the display control instruction to remind a driver to make preparations in advance.
Specifically, in step S10, a program to be displayed on a preset LED display screen is obtained and parsed, as shown in fig. 2, including:
step S101: the playing box number index is determined from the program name.
The playing box number index is set by the channel number, and the playing box number is included in the program names. When the program name is resolved, if the resolution is successful, step S102 is executed, and if the resolution is failed, no action is taken.
Step S102: and uploading the playing box number index to a database.
And saving the playing box number index by newly adding a field with the key being index_key in the database.
Step S103: and adding a playing box number update notification logic, and registering a ContentObserver in a communication function to monitor the updating of the stored playing box number index in the database.
And adding a playing box number updating notification logic in the playing box, attempting to analyze the playing box number from the program name when each program is played, uploading the playing box number to a database for updating if the program name is analyzed, and monitoring whether the playing box number stored in the database is updated or not.
The embodiment of the invention also comprises an LED display screen display control device applied to traffic, as shown in fig. 3, the display control device 100 comprises a program preset module 101, a traffic pulse signal acquisition module 102, a program name matching module 103 and a display control instruction generation module 104, wherein:
the program presetting module 101 is connected with the program name matching module 103, and the program presetting module 101 is used for presetting and storing programs to be displayed by the LED display screen; the program comprises a program name and program content, wherein the program name comprises channel number information, channel number information and signal types;
the traffic pulse signal acquisition module 102 is connected with the program name matching module 103, and the traffic pulse signal acquisition module 102 is used for acquiring a traffic pulse signal;
the program name matching module 103 is connected with the program presetting module 101, the traffic pulse signal acquisition module 102 and the display control instruction generation module 104, and the program name matching module 103 is used for analyzing the traffic pulse signal, acquiring the channel number information, the channel number information and the signal type in the traffic pulse signal and matching with the program name;
the display control instruction generating module 104 is connected with the program name matching module 103, and the display control instruction generating module 104 is used for matching corresponding program contents according to the program names and generating display control instructions for displaying the program contents; and sending the display control instruction to the LED display screen.
The display control device 100 according to the embodiment of the present invention can correspondingly implement its functions by the playing box, and specifically for the display control method, the following steps are implemented:
step S10: presetting and storing programs to be displayed by the LED display screen.
The program includes a program name and a program content, and the program name includes channel number information, channel number information and a signal type.
Step S20: and acquiring a traffic pulse signal.
Step S30: analyzing the traffic pulse signals, obtaining the channel quantity information, the channel number information and the signal type in the traffic pulse signals, and matching with the program names.
Step S40: and matching corresponding program contents according to the program names, and generating a display control instruction for displaying the program contents.
Step S50: and sending the display control instruction to the LED display screen.
For the description of the above steps, reference may be made to the foregoing related embodiments of the display control method, which are not described herein.
The embodiment of the invention also includes a display system of an LED display screen applied to traffic, as shown in fig. 4, the display system includes the display control device 100 of the above embodiment, and further includes a traffic signal 200 and a plurality of LED display screens 300, where:
the traffic signal machine 200 is in communication connection with the display control device 100, and the traffic signal machine 200 is used for generating a traffic pulse signal;
the display control device 100 is in communication connection with the LED display screen 300 and the traffic signal machine 200, and the display control device 100 is used for acquiring traffic pulse signals, generating display control instructions for displaying corresponding program contents and sending the display control instructions to the LED display screen;
the LED display screen 300 is in communication connection with the display control device 100, and the LED display screen 300 is used for carrying out corresponding display according to the display control instruction.
The embodiment does not need to describe how to generate the display control instruction for displaying the corresponding program content after the traffic pulse signal is acquired, and the display control instruction can be obtained according to the foregoing embodiment of the display control method and the embodiment of the display control device 100.
Specifically, the display system of the embodiment of the present invention further includes a TCP client 400, as shown in fig. 5, where the TCP client 400 is in communication connection with the traffic signal 200 and the display control device 100, and the TCP client 400 is configured to collect and parse a traffic pulse signal of the traffic signal 200, and determine, according to a change rule of traffic pulse information, a program content corresponding to a next state; the display control device 100 generates a display control instruction corresponding to the program content in the next state of the traffic pulse signal according to the determination result of the TCP client 400.
According to the LED display screen display method, the control device and the system for traffic, disclosed by the embodiment of the invention, through presetting programs to be displayed on the LED display screen, the programs can be quickly matched with traffic pulse signals, so that corresponding display control instructions are generated and are displayed by the LED display screen, the content to be displayed on the LED display screen can be quickly determined no matter whether the channels are one-channel or multi-channel, the prompt content can be synchronously displayed on the LED display screen when traffic signals are correspondingly displayed on the traffic light, a driver can prepare in advance according to the content displayed by the LED display screen, the driving experience of the driver is improved, and the traffic efficiency is also improved.
The invention has been further described with reference to specific embodiments, but it should be understood that the detailed description is not to be construed as limiting the spirit and scope of the invention, but rather as providing those skilled in the art with the benefit of this disclosure with the benefit of their various modifications to the described embodiments.
Claims (8)
1. The LED display screen display method applied to traffic is characterized by comprising the following steps of:
presetting and storing a program to be displayed by an LED display screen; the program comprises a program name and program content, wherein the program name comprises channel number information, channel number information and signal types;
acquiring a traffic pulse signal;
analyzing the traffic pulse signal, acquiring channel quantity information, channel number information and signal type in the traffic pulse signal, and matching with the program name;
matching corresponding program contents according to the program names, and generating a display control instruction for displaying the program contents;
transmitting the display control instruction to an LED display screen;
the program name contains channel number information, channel number information and signal types, and is:
the program names comprise a program name X_0 and a program name X_1 when the number of channels is 1; x is a channel number, the matched traffic pulse signal is red light when the signal type is 0, and the matched traffic pulse signal is green light when the signal type is 1;
or, the program names include a program name xy_00, a program name xy_01, a program name xy_10 and a program name xy_11 when the number of channels is 2; x and Y are the channel numbers of two channels respectively, the traffic pulse signal matched when the signal type is 00 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 01 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 10 is that the straight running light of the side direction is on the green light, the traffic pulse signal matched when the signal type is 11 is that the straight running light of the side direction is on the green light, and the left turning light of the side direction is on the green light.
2. The LED display screen display method for traffic according to claim 1, wherein the program name further comprises a program name x_2 when the number of channels is 1, and the matched traffic pulse signal is a yellow light within a set time period after the green light ends when the signal type is 2.
3. The LED display screen display method for traffic according to claim 1, wherein said matching the corresponding program content according to the program name and generating the display control instruction for displaying the program content comprises:
and according to the program names XY_00, XY_01, XY_10 and XY_11, the program content of the LED display screen on the side and the program content of the LED display screen on the opposite side are matched, and display control instructions of the LED display screen on the side and the LED display screen on the opposite side are respectively generated.
4. The method for displaying an LED display screen for traffic according to claim 3,
the program content of the LED display screen on the side, matched with the program name XY_00, is that traffic police reminds attention to traffic safety, and the program content of the LED display screen on the opposite side, matched with the program name XY_00, is that a straight vehicle enters a waiting area or a left-turning vehicle enters the waiting area;
program content of the matched side LED display screen of the program name XY_01 is that a straight vehicle enters a waiting area, and program content of the matched side LED display screen of the program name XY_01 is that traffic police reminds attention to traffic safety;
the program content of the LED display screen on the side matched with the program name XY_10 is that a left-turning vehicle enters a waiting area, and the program content of the LED display screen on the opposite side matched with the program name XY_10 is that traffic police reminds attention to traffic safety;
the matched side LED display screen of the program name XY_11 has no program content, and the matched side LED display screen has no program content.
5. The method for displaying an LED display screen for traffic according to claim 1, wherein the steps of obtaining and analyzing a program to be displayed by a preset LED display screen comprise:
determining a playing box number index from the program name;
uploading the playing box number index to a database;
adding a playing box number update notification logic, registering a ContentObserver in a communication function, and monitoring the updating of the stored playing box number index in a database; the stored playing box number index is obtained by storing the playing box number index through a field with a newly added key being index_key in the database.
6. The utility model provides a be applied to LED display screen display control device of traffic, its characterized in that, display control device includes program preset module, traffic pulse signal acquisition module, program name matching module, display control instruction generation module, wherein:
the program presetting module is connected with the program name matching module and is used for presetting and storing programs to be displayed by the LED display screen; the program comprises a program name and program content, wherein the program name comprises channel number information, channel number information and signal types;
the traffic pulse signal acquisition module is connected with the program name matching module and is used for acquiring traffic pulse signals;
the program name matching module is connected with the program presetting module, the traffic pulse signal acquisition module and the display control instruction generation module, and is used for analyzing the traffic pulse signal, acquiring channel number information, channel number information and signal type in the traffic pulse signal and matching with the program name;
the display control instruction generating module is connected with the program name matching module and is used for matching corresponding program contents according to the program names and generating display control instructions for displaying the program contents; and sending the display control instruction to an LED display screen;
the program name contains channel number information, channel number information and signal types, and is:
the program names comprise a program name X_0 and a program name X_1 when the number of channels is 1; x is a channel number, the matched traffic pulse signal is red light when the signal type is 0, and the matched traffic pulse signal is green light when the signal type is 1;
or, the program names include a program name xy_00, a program name xy_01, a program name xy_10 and a program name xy_11 when the number of channels is 2; x and Y are the channel numbers of two channels respectively, the traffic pulse signal matched when the signal type is 00 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 01 is that the straight running light of the side direction is on the red light, the traffic pulse signal matched when the signal type is 10 is that the straight running light of the side direction is on the green light, the traffic pulse signal matched when the signal type is 11 is that the straight running light of the side direction is on the green light, and the left turning light of the side direction is on the green light.
7. The LED display screen display system applied to traffic, characterized in that the display system comprises the display control device according to claim 6, further comprises a traffic signal and a plurality of LED display screens, wherein:
the traffic signal machine is in communication connection with the display control device and is used for generating traffic pulse signals;
the display control device is in communication connection with the LED display screen and the traffic signal machine, and is used for acquiring the traffic pulse signal, generating a display control instruction for displaying corresponding program content and sending the display control instruction to the LED display screen;
the LED display screen is in communication connection with the display control device and is used for carrying out corresponding display according to the display control instruction.
8. The LED display system for traffic according to claim 7, further comprising a TCP client, wherein the TCP client is communicatively connected to the traffic signal and the display control device, and the TCP client is configured to collect and parse a traffic pulse signal of the traffic signal, and determine a program content corresponding to a next state according to a change rule of traffic pulse information;
and the display control device generates a display control instruction of corresponding program content in the next state of the traffic pulse signal according to the judging result of the TCP client.
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