A remote led display control system based on gprs
A technology of LED display and control system, applied in static indicators, instruments, etc., can solve the problem of failure to realize large-scale publicity and real-time update of multiple LED displays, small amount of data sent at one time, and single non-Internet of Things. Design and other issues to achieve the effect of reducing laying cost and communication failure rate, fast running speed, and enhancing stability and timeliness
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Embodiment 1
[0036] A remote LED display screen control system based on GPRS, comprising an upper computer control terminal 1, a transfer server 2 and a lower computer LED display screen 3; the upper computer control terminal 1 and the lower computer LED display screen 3 establish a network connection through the transfer server 2; The lower computer LED display screen 3 includes a microcontroller 4 and a data memory 7 connected to the microcontroller 4, a dead point detection module 5, a serial port module 8, a light intensity detection module 10 and an LED display screen 6, and the dead point detection module 5 is connected to the LED display. The display screen 6 and the serial port module 8 are connected to the GPRS module 9; the data of each module is aggregated to the microcontroller 4, and the microcontroller 4 performs unified data processing, and the bad point information of the LED display screen 6 is passed through the microcontroller 4 and the serial port module 8 is sent to the...
Embodiment 2
[0039]As in the GPRS-based remote LED display control system in the above-mentioned embodiment 1, the server software 14 is written based on VC6.0, including dynamic domain name resolution 31, LED online refresh list 32, control terminal online refresh list 33, data transfer 34, intranet Penetration 35, LED login management 36 and control terminal request monitoring 37 seven modules; the function of dynamic domain name resolution 31 is to resolve the fixed domain name to obtain the local IP address; the function of LED online refresh list 32 is to display the online status of the LED display screen in real time; The role of the control terminal online refresh list 33 is to display the online status of the LED display screen in real time; the function of the data transfer 34 is to make the communication data of the control terminal and the LED display screen pass through the server before being forwarded to the other party; the role of the intranet penetration 35 The server is u...
Embodiment 3
[0045] Dead point detection module 5 in above-mentioned embodiment 1 or 2 comprises the high precision sampling resistance 16 that obtains sampling voltage, analog switch 17, differential amplifier I18, A / D converter I19, voltage comparator 20, D / A converter 21 and Data memory 7; the present embodiment adopts sixteen groups of sampling resistors 16 to connect sixteen analog switches 17, the sixteen analog switches 17 connect differential amplifier I18, differential amplifier I18 connects A / D converter I19 and voltage comparator 20, A / D converter 119 connects data memory 7, and data memory 7 connects D / A converter 21, and D / A converter 21 connects voltage comparator 20, and voltage comparator 20 connects microcontroller 4; The dynamic scanning of this display screen The method adopts the combination of the first line and the seventeenth line of the display screen, the combination of the second line and the eighteenth line, and so on. There are 16 groups in total, 16 times of sca...
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