Les systèmes d'affichage à grand écran-sont largement utilisés dans les communications, l'énergie électrique et les organisations de commandement militaire. Ils jouent un rôle important dans la fourniture d'informations partagées, l'aide à la décision et l'affichage de la situation. Ce qui suit présente les grands principes et les précautions à prendre lors de la conception de systèmes d'affichage à grand écran-et de la sélection d'équipements .
Le système d'affichage à grand écran-est un système interactif multimédia qui intègre une variété d'informations de réception, de traitement et d'affichage, ainsi que plusieurs types d'opérations et de contrôle du personnel. Il implique diverses questions techniques de son et lumière, implique également la gestion et la coordination des services concernés, et est indissociable de la structure globale de la salle d'exposition. , Nous devons nous concentrer sur la demande, la planification globale et l'utilisation d'une technologie d'intégration complète pour obtenir les résultats souhaités.
1. Main functions and requirements
The design of the large-screen display system must first put forward requirements. The following are the main functions and requirements for general use.
The information receiving system must not only receive VGA, RGB, and network computer information, but also receive broadband voice and video signals, and can perform appropriate information conversion as needed.
The information display system can publish shared information in the form of multimedia, and can display situation, text, tables and video image information in different modes and according to divided areas. Requires clear situation display, high resolution, clear and stable text and image display.
Preview, camera and switch To ensure the accuracy and quality of the projected display information, the system must have a preview function for pre-review of the image. Cameras should be installed in the display hall to extract video images of the work of the management and control organization. The system should have a switching display function to meet the needs of multi-channel information display.
The video teleconference system can use monitoring, preview, switching, communication and terminal control equipment to maintain video contact with relevant parties, and video teleconferences can be held at any time.
The control mode system allows leaders, business staff, and security personnel to switch on and off the large screen, open windows, select source, project display, adjust audio and lighting, etc., by means of centralized control, mobile control, and authorized control.
L'optimisation et la conception du système en fonction de la configuration standard de l'équipement sont compliquées, le signal du câble est varié, la technologie d'installation et les conditions environnementales sont élevées, et le câblage technique et l'installation de l'équipement doivent être effectués conformément à la normalisation de la ligne de la machine, à la compatibilité électromagnétique. standards et les exigences d'installation d'un grand-écran pour assurer le fonctionnement stable à long-terme du système .
2. System layout
1. Basic layout
The available layout schemes of the large-screen display system are: cinema type, round table meeting type, lecture classroom type, and linear type.
Le grand écran dans la disposition du théâtre est à l'avant de la salle d'affichage, le siège du chef est au centre, le siège du vendeur est situé à l'avant et à l'arrière ou des deux côtés du chef, et le personnel de soutien technique est dans le spécial salle de contrôle derrière le chef pour faciliter l'observation et le contrôle de l'affichage sur grand écran. . Les sièges d'observation sont dans la rangée arrière ou à l'extérieur, et leurs visites ou observations n'affecteront pas le travail normal. Cette disposition place chaque siège dans la meilleure position de visualisation du grand écran autant que possible, ce qui est propice à l'expansion des sièges. Il peut accueillir plus de personnes et convient à un système de gestion pour une prise de décision décentralisée-. Par conséquent, la taille de l'écran peut être plus grande et plus d'un, et il peut être agencé de manière centralisée. Devant. Mais cette disposition n'est pas propice aux conversations entre les dirigeants et les autres membres.
The round table conference layout can have three screens. The main screen is located at one end of the round table, and the auxiliary screens are located on both sides of the main screen. The angle between the screens depends on the number of people. The leaders are located at the other end of the round table and are in the best viewing position. The salesmen or decision-making assistant leaders are located on both sides of the round table, mainly watching the screen on the front of the seat. This structure is helpful for leaders to watch the big screen and discuss with other members, but it is not conducive to assist decision-making leaders to watch other screens. It needs to be solved by reasonably dividing the display area and content.
The large screen with a lecture hall layout is located right in the front. Various types of personnel are arranged in a ladder-like position according to their importance to normal work. The main decision-making leaders are in the best viewing position of the large screen, followed by the rest. Between the seats and the screen, place a speaking platform for speakers. This layout is suitable for management organizations that have a large number of leaders and observers, and rely entirely on the information provided by the large screen to make decisions. The linear layout of the large screen is straight or curved. The large screen is divided into several areas according to departments, directions or tasks. The relevant leaders are located in the best viewing positions of the corresponding areas and perform management functions independently of each other. In this layout, the large screen on the front of each decision maker or a group of decision makers is specially set up for it to display the information that is most concerned about. It is suitable for management and control institutions that focus on flat decentralized decision-making.
2. The layout of the projection display device
Projection display equipment includes projectors, controllers, source machines, information receiving and format conversion equipment. These equipment are large in number and volume, with close physical connections. The basic requirements of the layout are concealment, reliability, and easy operation and maintenance.
Projection is divided into front projection and rear projection. The front-projected light passes through the display hall and projects information onto the screen. Orthographic projection obtains a larger orthographic projection format by increasing the range of light rays, which is suitable for single-screen stand-alone occasions with larger screen size requirements, thereby reducing equipment and reducing costs. However, the height of the orthographic projection to the objects in the display hall There are restrictions, and the intensity of the light will attenuate with the extension of the projection distance, which reduces the brightness of the screen. The method of superimposing two projectors or reducing the brightness of the hall lighting is commonly used to increase the relative brightness of the projection display.
Rear projection is generally used in a short{{0}}range environment. In order to increase the size of the projection display, a wide-angle lens or a multi-projector splicing scheme can be used. The performance of the lens is usually expressed by the ratio of the range to the screen width, and the selection range can be from 0.88:1 to 7:1. The wide-angle lens only needs a short range to obtain a larger display format. However, compared with splicing with multiple projectors, in order to achieve the same brightness, a projector with a wide-angle lens is required to have a higher light source power, and the larger the screen, the more obvious the solar effect. Therefore, for a single screen with a larger screen, the splicing structure tends to be adopted. The splicing projector is fixed on a special rack behind the scenes, and the controller, source machine, information receiving and format conversion equipment are located at both ends of the scene or under the rack of the projector on the first floor, so as not to affect the normal projection display conditions To perform maintenance operations.
3. Display the equipment and layout of the control room
La salle de contrôle de l'affichage est généralement située à l'arrière de la salle d'exposition, séparée de la salle par-une vitre unidirectionnelle, et il y a des trous sonores sur la vitre, de sorte que le personnel d'assistance technique puisse directement observer et entendre le personnel et équipement dans le hall d'affichage, afin de trouver et de répondre aux utilisateurs à temps Rapport, support technique et dépannage en temps opportun.
