Traditional LED display screens modify the display information by connecting directly with a computer. Therefore, remote real-time updates of screen information cannot be realized, nor can a networked information distribution system be constructed.
The wireless LED information release system adopts a brand-new way to update the screen information, based on GPRS/CDMA wireless network technology, provides a common RS-232 interface, LED multimedia information display and release system of mobile data transmission platform, in a fixed place, mobile The wireless LED electronic display terminal is installed in the facility to realize the networking control of the LED display. Whether it is an ordinary text bar screen or a large screen graphic screen, remote information can be updated in real time through a wireless information terminal. Regardless of the number of LED displays and the number of them, the system's main control center can accurately and instantly publish the information to one or more specified screens. The wireless LED information release system greatly enhances the flexibility and real-time performance of the LED display as an information display carrier to disseminate information, and it is effective in expanding its application.
Second, the scope of application. As a new information release carrier, wireless LED information release system has a broad market and use, can be widely used in government, commerce, transportation, catering, construction, tourism, sports, transportation and other industries and sectors.
The led display can also be used for independent wireless networking within tourist attractions, group companies, and units to achieve a multi-level, cross-level, and level-shared wireless information distribution system. =
Third, the system structure, ZWINFO remote information release system includes three parts: the center control computer, wireless communication terminal and led display. The system diagram is shown in Figure 1.
Golden Yellow is a ZWINFO information release system product of Shanghai Zhengwei Digital Technology Co., Ltd.
The display screen is set at each remote location where information needs to be released. Each display screen is equipped with an information distribution terminal, and the information distribution terminal communicates with the central computer via SM or GPRS. When using the GPRS method, the terminal is connected to the Internet through GPRS. At the same time, the computer for releasing information is also connected to the INTERNET network through a dedicated line, ISDN, ADSL, dialing, and other methods. Through the Internet connection, the center computer can The centralized data transmission and distribution with various display screens in the form of TCP/IP, regardless of whether the display screens are placed in the same city or in the same area, centralized management of low-cost information can be performed at the management center, and unified management of information distribution can be realized. And maintenance.
The system can facilitate the real-time information release of different regions or numerous display screens.
Fourth, functional characteristics: In addition to the power outside without any wiring, save material and construction costs without time, geographical, climate constraints, the screen can be placed everywhere
Management Center remote information updates without any on-site operation
Remotely modify screen parameters and update screen information
Fast update, you can modify the information at any time, compared with on-site modification has a clear advantage
The information update can be unified for all screen operations as well as for any one or several operations
Low operating costs, no post-use costs compared to manually modified information
Publish software can save published information and publisher information for easy query and easy system maintenance
Unified management and maintenance of all screens improve maintenance efficiency and reduce maintenance costs
The entire system is more controllable and reliable, giving full play to the efficiency and superiority of the system.
Modify the software to provide other needed functions
Fifth, equipment technical parameters
The outline of the ZWINFO telematics terminal is shown in Figure 3.
The interface and parameters of the remote information publishing terminal are as follows:
Power interface: DC 5-16V;
SIM card interface, 3V SIM card;
Antenna interface
LED interface, DB9 female interface;
Input and output control interface, RJ45 interface;
MICPHONE interface;
Power consumption: 0.1-2W.
Asynchronous graphic control card parameters are as follows:
Scope of application monochrome / dual color
Scan duty cycle 1/4
Maximum control point 124K (K=1024)
Horizontal maximum point 1280
Longitudinal maximum 96
Storage capacity standard 512KB (maximum customizable 1MB)
The clock shows
Straddle clock only supports 16 points 1 CK
Clock frequency 11MHz, 5.5M, 3.7M, 2.8M
Field scan frequency >90Hz
Power supply 5V
Six, software description
The ZWINFO remote information publishing system's central management software is the server software that interfaces with monitoring terminals for information release, terminal control, terminal management, and information management.
The central management software runs on the server of the monitoring center. The computer can be connected to the Internet through a variety of ways. The information receiving terminal establishes a TCP connection with the server through the Internet or communicates directly with the GSM SM. At this time, Zhengwei Digital can be used. ZWMODEM-SM wireless messaging terminal.
The central management software mainly completes the management and control functions of multiple display screens and edits and stores the display data. At the same time, remote control and remote data acquisition can be performed on all terminals through this software.
The central management software also completes the storage and management of information, terminal management, and information updates. You can set up regular publishing for information publishing points.
On the same central software, information can be released and status can be controlled for multiple terminals.
Matting Agent For Coil Coatings
Description
1, Coated Aluminum Coil refers to the aluminum
coil through coating and coloring treatment generally includes PE coated
aluminum coil and PVDF coated aluminum coil. Coated aluminum coil is widely
used to manufacture aluminum composite panel, aluminum ceiling, roofing
aluminum veneer, aluminum honeycomb panel, electronic products, etc. Coated Aluminum Coil is the
most popular new material currently. It is especially suitable for interior
decoration and AD boards. It can be classified
matt and glossy according to coating gloss.
2,
Matting Agent specialized used for the matte Coil Coating. It provided high matting
efficiency, excellent coating appearance and better transparency. As well as
low oil absorption, easy dispersion and smoothly touch with minimal impact of
viscosity.
Characters
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1, Highest
matting efficiency: High pore volume
reach to 1.8-2.0 ml/g, and fine control of the particle size and particle
size distribution.
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2, Surface
smoothness and improvement in scratch resistance: These silicas have minimal
effect on the physical properties, allowing development of smooth films with
excellent hand-feel, scratch resistance and stain resistance.
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3, Good Transparency: Products high purity lead the refractive
index inosculate with resin index.
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4, Good Dispersion: This series of products that can easily
decentralized in any paint system, the average high-speed pulsator with 10-20
M/S of the line speed, after 10 minutes can be ok.
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5, Excellent
Hand-feeling: These silicas have minimal effect on the mechanical properties,
allowing development of smooth films with excellent hand-feel, scratch resistance
and stain resistance.
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