Abstract: Based on the analysis of the status quo and development trend of enterprise TV monitoring system, the application of TV monitoring system using optical fiber transmission in the second refinery of Anyang Iron and Steel Co., Ltd. is introduced.
Keywords: enterprise TV; monitoring system; optical fiber; research
This article refers to the address: http://
O Introduction Enterprise TV monitoring system is the perfect combination of TV monitoring system and digital video network monitoring system. It embodies the perfect combination of modern video technology, modern electronic technology, modern communication technology, modern control technology and modern computer technology. It is used to improve the on-site management of enterprises, improve product quality, strengthen safety production prevention, guarantee the property and personal safety, and create extremely favorable conditions for enterprises to achieve modern management.
The second refining and rolling mill of Anyang Iron and Steel Co., Ltd. is the landmark project of the “three-step†development plan of the group company. The equipment level is domestically leading and the electrical control level is first-class in the world. Every corner of the rolling mill production line is the key target of safety precaution. Angang No. 2 Refining and Rolling Mill adheres to the principle of “safety first, prevention firstâ€, formulates and adopts safe and effective preventive measures, and strengthens the safety management of key parts and dangerous workplaces. Comprehensive safety production monitoring of steelmaking and rolling mill production lines, enabling safety management personnel and operators to timely solve problems or hidden dangers, and timely handle, solve problems or promptly remind the site staff in the operation room and dispatching room. And the operator to prevent accidents from happening.
1 Composition and principle of enterprise TV monitoring system
1.1 System Composition The enterprise TV monitoring system is mainly composed of the front end part, the management control equipment, the terminal display equipment and the signal transmission system.
(1) The front-end equipment of the system consists of a color CCD camera, a lens, a pan/tilt, a decoder, a camera cover, and the like.
(2) The management control device is composed of an operation room signal controller, a central signal controller, a central matrix, and a smart keyboard.
(3) The terminal display device is constituted by a CRT of a monitor and a computer.
(4) The system uses coaxial cable or fiber to transmit video and data signals.
1.2 Working principle of the system 1.2.1 Working principle of the video system: The camera converts the light signal of the scene into an electrical signal, and the signal conversion by the optical transceiver is transmitted from the transmission cable to the control room, through the video distributor, a set of outputs The access matrix switcher controls the video output of the monitor, and the other group accesses the hard disk recorder and sends it to the local area network for remote operation monitoring.
1.2.2 Control system working principle: The control system is a device that controls the video signal of the whole system and the action of the camera and the pan/tilt. It consists of system software, intelligent keyboard, optical transceiver, hard disk recorder, video matrix switcher, and signal. Expander, decoder, zoom lens and optical cable, keyboard communication bus cable, control bus cable, PTZ lens control bus cable.
The role of the control system is:
(1) Set the video image display and switching, such as displaying any fixed point or system loop image on any monitor; setting the cycle sequence and time interval.
(2) Power supply to the camera, up and down rotation of the pan/tilt, zooming of the zoom lens, aperture size, selection control of the focus, and detection of the working condition.
2 The status of enterprise TV monitoring system The enterprise TV monitoring system is currently developing a networked video surveillance system, also known as IP surveillance system, which first appeared in 2001. The networked video surveillance system was designed from the outset for use in a network environment, so it overcomes the shortcomings of DVR/NVR not being able to obtain video information over the network. Users can view, record and use any computer on the network. Manage real-time video information. Fully digital system, based on the standard TCP/IP protocol, can be transmitted over LAN, wireless network, Internet, and the control area greatly exceeds the previous two generations of systems: it uses an open architecture, and can be used with access control, alarm, patrol, voice Seamless integration of MIS and other systems: It is based on embedded technology, with stable performance, no need for special management, greatly improved flexibility, and any combination of monitoring scenarios can be implemented.
In actual production applications, corporate TV surveillance systems often have such problems: video surveillance system failures, resulting in monitoring distortion, this problem often makes managers and maintenance personnel a big headache. At present, such phenomena are widespread in domestic corporate TV monitoring systems. In order to solve this problem, we require our maintenance and research personnel to sum up experience to optimize the system. Most of the improvement process needs to find the reason from the transmission mode. In this respect, the optical fiber is superior to the coaxial cable.
3 Angang Second Refining and Milling Plant adopts optical transmission TV monitoring system
3.1 TV monitoring system of Angang No. 2 Refining and Rolling Mill The monitoring center of this system is located in the dispatching room of the factory center. The central dispatching room has a video wall consisting of 12 34-inch color monitors. Scalable SJCl2824 large video matrix switcher with a 16-channel video input board and two 8-channel video output boards. Therefore, this video matrix switcher is equipped with 16 video inputs and 16 channels of video output. The maximum input of a single box can reach 128 channels, and the maximum video output can reach 24 channels. It is a set of extremely large scale matrix switching. Control system equipment. The image of the TV monitoring system can be digitally compressed by the embedded digital hard disk recorder and then connected to the MIS network via the network interface RJ45.
The remote end of the system is the remote monitoring required by each operating room of the production line. The remote video signal is transmitted to the central dispatching room through the video optical transceiver. At the same time, each pair of optical transceivers has a reverse control signal channel to realize the central control matrix switching of the dispatching room. The action control of the pan/tilt and lens of the remote camera. The system has a total of 108 Japanese Panasonic color CCD cameras at the front end. Schematic diagram of the structure of a TV monitoring system using optical fiber transmission (Figure 1):
3.2 Advantages of optical fiber transmission system The transmission part refers to the transmission of image signals. The flow of video signals flows from the camera at the front of the system to the control center of the digital monitoring system. According to the actual situation on the site, the optical cable is used for transmission. The distribution distance of the plant area is relatively scattered, and the distance between east and west is far. The transmission of optical cable can avoid the video attenuation caused by the general cable transmission, so that the image displayed by the terminal is clearer. The transmitting end of the video optical transceiver is arranged at the front end of the monitoring point. The video optical transceiver receiving end, the video optical transceiver transmitting end and the video optical transceiver receiving end synchronously transmit the multi-channel real-time video signal through the optical cable, and the optical transceiver can be applied to various harsh environments, and is an ideal choice for the monitoring system application. The plug-and-play design makes installation extremely easy and requires no electrical or optical adjustments. The optical transceiver is equipped with LEDs for each independent channel's power and video status indicators to monitor the system's uptime.
The optical fiber transmission system is mainly composed of three parts: a light source (optical transmitter), a transmission medium, and a detector (optical receiver). The work of the light source and the detector is completed by the optical transceiver, and the main function of the digital optical transceiver is to realize the conversion of electricity, light and electricity.
As a transmission medium, optical fiber has low signal transmission loss and long transmission distance, and adopts single-mode optical fiber. The TV signal has a wide frequency band, and it is very difficult to transmit over long distances. The optical signal is transmitted by optical fiber to ensure high-distance transmission over long distances. Debbie, no high frequency compensation, which is unmatched by conventional cables; strong anti-interference, no electromagnetic radiation, no signal leakage, no grounding and short circuit problems, low system power consumption; long fiber transmission life.
3.3 System functions and characteristics Industrial TV digital video network monitoring system is an important part of the safety production prevention system. It has advanced technology, strict monitoring, and strong ability to provide timely and accurate storage information and linkage with other prevention systems. It can not only monitor the real-time monitoring of the monitoring site, but also clearly record the monitoring content through various storage media for easy access. Its characteristics are that it uses a series of high-tech technologies such as multi-information collection, transmission, monitoring, recording, management and integration.
(1) The monitoring system realizes on-site multi-screen real-time monitoring and real-time visual and audio hard disk recording. The video saving time can be designed according to customer requirements. On-site monitoring can achieve real-time video and audio synchronization of 25 frames / sec, using MPEG-4 video and audio hardware compression, image preview monitoring resolution of 704 × 576 pixels or more, video resolution of 352 × 288 pixels or more.
(2) The video storage device adopts a hard disk recorder, and the hard disk space is huge, realizing mass storage. When the hard disk recording storage file is full, the system can automatically prompt and automatically replace the oldest recorded video file to realize loop recording. At the same time, the important video files can be automatically or manually locked to prevent automatic deletion when the hard disk is full.
(3) With dynamic monitoring alarm recording function, the sensitivity is adjustable, the recording duration is adjustable, each image supports multiple partition detection, and when the video alarm is triggered, the content can be pre-recorded 60 seconds before the trigger (pre-recording time adjustable) To make the video content complete.
(4) The system has a white check function, and the system automatically alarms when the video source is lost. With image capture, printing capabilities. It has password protection to prevent illegal modification of system settings.
(5) The system image resource is compressed into a digital image signal transmitted through the intra-plant local area network, which is convenient for managers at all levels to watch at any time.
(6) Image display mode: It can be pre-set according to management needs. Each monitor can perform fixed-point display or 4-screen, 9-screen, 16-screen display on any camera. At the same time, each monitor can be used for all cameras or parts. The camera image is automatically cycled, and the 16-channel DVR playback signal display image signal can also be displayed at the same time.
(7) The system has an image programmable function, and the related buttons on the operation control keyboard can conveniently set the content and time of the image cycle switching on each monitor, and the automatic cycle display time can be adjusted within 1-30 seconds.
4 Development Trend With the rapid development of science and technology, some new technologies and new technologies have been applied to enterprise TV monitoring systems, and the original single-function TV monitoring system has been developed into a comprehensive and advanced technology composite monitoring system. In particular, the application of single-chip microprocessors, large-scale integrated circuits, and computer multimedia technologies has made television monitoring systems a big step toward integration, intelligence, digitization, and networking. At present, the most representative is the integrated integrated multimedia monitoring system. The so-called integrated integrated multimedia monitoring system is a comprehensive application of 3C (Contro1-one control, Communication-communication, Computer-computer) technology, with industrial control computer as the core. The special equipment separated from each other in the traditional TV monitoring system is integrated into the expansion slot of the computer in the form of a computer standard bus board, sharing the software and hardware resources of the computer, and performing various functions under the control and management of the multimedia monitoring software. . The system has high degree of integration and standardization, and is easy to manage and maintain; all Chinese operation interface, friendly man-machine interface, easy to operate, easy to learn and use; strong system compatibility, easy to upgrade; powerful and powerful, wide range of applications. Switching, displaying and compressing storage, reading and printing of any combination of video images and audio; simple setting and arming of arming and disarming; with alarm plan prompt, automatic display of alarm area plane and alarm point, complete alarm data record; A variety of alarm processing technology; system equipment configuration flexibility, easy to set; front-end equipment lens / PTZ long-distance remote control; hierarchical management, self-prevention, full-featured, safe and reliable.
5 Conclusion The TV monitoring system using optical fiber transmission has been used in the production line of the second refining and rolling mill of Anyang Iron and Steel Co., Ltd., and the current image is clear, concentrated, stable, with good effect, high reliability and low failure rate, and has achieved satisfactory results.
Due to the continuous improvement of the level of production management automation, especially for industries with many monitoring targets, wide areas and scattered monitoring points, the requirements for centralized monitoring of remote real-time images are becoming more and more urgent. At the same time, with the continuous promotion of optical communication technology, it provides a good opportunity for remote real-time high-definition TV monitoring system. At the same time, it also provides a perfect communication line for long-distance and ultra-long-distance transmission.
The utility model discloses an Electronic Cigarette with atomizer oil core separation structure, which comprises a atomizer assembly and a battery assembly; The utility model has the advantages of reasonable structure design and high practicability. During operation, because the oil storage tank of the atomizer is completely sealed and the oil guide material is completely isolated from the oil guide material, the oil guide material will never contact with the oil guide material in the storage process
Advantages:
Oil core separation, Mesh removable heating core, Ultra quiet design,100% oil leakage free, Excellent taste, Cost far less than the industry price.
A variety of colors and finishing are available, can be adjusted according to your market needs.
Oil Coil Separation Pod Patent,Oil Coil Separetion Vape Pod Oem,Innovated Vape Products Oem,Oil Coil Separation Vape Products Oem
Shenzhen MASON VAP Technology Co., Ltd. , https://www.e-cigarettefactory.com