CN202856907U - New Network Digital High Speed Dome - Google Patents

Abstract

The utility model provides a novel network digit high-speed ball to it is relatively poor to solve prior art and have image quality, is unfavorable for long distance transmission, can not the problem that high speed cruises, its characterized in that: the camera lens comprises a camera lens, a CCD image sensor, an A/D converter, a coding compression module, a main control chip, a network module, a Flash storage module, an Ram storage module and a holder module, wherein the CCD image sensor is connected with the A/D converter, the A/D converter is connected with the main control chip through the coding compression module, and the main control chip is further connected with the network module, the Flash storage module, the Ram storage module and the holder module. The utility model discloses an event trigger changes resolution ratio, frame rate, reaches and reduces the broadband cost effectively, saves the storage resource, improves the beneficial effect of monitoring efficiency.

Description

New Network Digital High Speed Dome

technical field

The utility model relates to a digital dome camera device, more specifically to a new network digital high-speed dome integrating video compression technology, computer technology, network technology, embedded technology and other advanced technologies.

Background technique

In the traditional CCTV video surveillance, the traditional video signal is an analog signal, and the video signal is usually transmitted by coaxial cable. The image quality of analog surveillance is poor during long-time video recording, and it is not conducive to long-distance transmission and cannot cruise at high speed. To transmit multi-channel video and audio signals in a long-distance, high-definition and synchronous manner, the most economical and feasible method is to digitize the analog signals, compress and encode them, and transmit them using public or dedicated communication lines.

With the rapid development of IC technology and network technology, the existing traditional technology is challenged, and the camera is required to be able to collect and process video information at the front end, and convert it into digital signal for transmission through the network, so as to realize real-time monitoring.

Contents of the invention

The purpose of this utility model is to provide a new type of network digital high-speed dome to solve the problems of poor image quality, unfavorable for long-distance transmission and incapable of high-speed cruise in the prior art. The system makes the video data compressed and encrypted, and sent to the end user through the Internet.

The technical scheme adopted by the utility model is: a new type of network digital high-speed ball, characterized in that: it consists of a lens, a CCD image sensor, an A/D converter, a code compression module, a main control chip, a network module, and a Flash memory module , Ram storage module and PTZ module, CCD image sensor is connected with A/D converter, A/D converter is connected with main control chip through coding compression module, main control chip is also connected with network module, Flash storage module, Ram storage Module and PTZ module connection.

The lens adopts a manual focus lens.

Described CCD image sensor adopts Super CCD image sensor.

The A/D converter adopts an independent A/D module.

The main control chip adopts an embedded chip of an embedded Linux system.

The pan-tilt module is composed of a decoder and a motor, and the motor adopts a precision differential stepping motor.

The network module adopts a standard RJ45 network interface, supports multiple network protocols such as RTP/RTCp, UDP, HTTP, TCP/IP, and PPPOE, and can directly send signals to the Internet.

The utility model adopts an embedded real-time multi-task operating system, and integrates video compression and transmission processing functions on the main control chip. The video camera digitizes the collected video signal and then compresses it, and then transmits it to the network or server after internal processing. Users on the Internet can view the camera images on the Web server through dedicated software or directly with a browser. Authorized users can also control the movement of the camera pan/tilt lens or configure the system. The main features of this monitoring system are: Integrate video compression and processing functions into a small device, which can be directly connected to Ethernet or WAN, to achieve plug-and-play, save all kinds of complicated cables, and easy to install (Only need to set an IP address), the client can watch it with a browser even without using special software.

The utility model has the advantages of: adopting a new three-dimensional positioning method, adopting a new coding compression module and video analysis technology; the new coding module adopts an optimized video coding algorithm based on H.264, and the processing speed is faster and more effective The built-in gimbal adopts "precision differential stepping motor" to realize the fast and accurate positioning and cruising of the high-speed ball; the integrated new video detection technology integrates more abundant trigger events to more accurately and effectively determine the possible behavior And don't miss out. The utility model changes resolution and frame rate through event triggering, thereby effectively reducing broadband costs, saving storage resources, and improving monitoring efficiency.

Description of drawings

Fig. 1 is a circuit connection block diagram of the utility model.

Detailed ways

A new type of network digital high-speed ball, characterized in that: lens 1, CCD image sensor 2, A/D converter 3, encoding compression module 4, main control chip 5, network module 6, Flash storage module 7, Ram storage module 8 and a pan-tilt module 9, the CCD image sensor 2 is connected with the A/D converter 3, the A/D converter 3 is connected with the main control chip 5 through the coding compression module 4, and the main control chip 5 is also connected with the network module 6, Flash The storage module 7, the Ram storage module 8 and the pan-tilt module 9 are connected.

The lens 1 is a manual focus lens.

Described CCD image sensor 2 adopts Super CCD image sensor.

The A/D converter 3 uses an independent A/D module.

The main control chip 5 adopts an embedded chip of an embedded Linux system.

The pan-tilt module 9 is composed of a decoder 10 and a motor 11, and the motor 11 adopts a precision differential stepping motor.

The network module 6 adopts a standard RJ45 network interface, supports multiple network protocols such as RTP/RTCp, UDP, HTTP, TCP/IP, and PPPOE, and can directly send signals to the Internet.

When the utility model machine starts, the main control chip 5 transfers the Linux kernel solidified in the flash memory module 7 into the SDRAM of the system memory, and the system starts from the SDRAM. After the system starts, the main control chip 5 controls the coding compression module 4, the network module 6, the pan-tilt module 9, and the serial interface through the serial interface.

The working process of the system is as follows: After the image signal is collected by the lens 1, the optical signal is converted into an electrical signal by the CCD image sensor 2, and the analog signal is compressed by the A/D converter 3 according to a certain code through the encoder. Next, the network service module sends it to the network according to a certain network protocol, and the main control chip can also receive alarm signals and send out alarm signals, and send out control signals as required.

In this utility model, the built-in platform adopts "precision differential stepping motor" to realize fast and accurate positioning and cruising of the high-speed ball. In order to ensure the heat dissipation of the body, a double fan design is adopted to form air convection. Quick installation design, more convenient installation.

The lens 1 of the utility model adopts a manual zoom lens, and the focal length of the lens can be adjusted according to actual on-site conditions.

The CCD image sensor 2 of the utility model adopts a new type charge coupler Super CCD image sensor, adopts honeycomb-shaped octagonal diodes, the arrangement structure is more compact than that of ordinary CCD, the pixel utilization rate is high, and there is more space for photosensitive diodes. Compared with ordinary CCD, the sensitivity, signal-to-noise ratio and dynamic range are all improved. Using progressive scanning technology, the picture has no smear delay. At the same time, it has the characteristics of high sensitivity, good color reproduction and high signal-to-noise ratio.

The A/D converter 3 of the utility model adopts an independent A/D conversion module, directly converts the optical signal into a digital video signal conforming to the ITU656 standard, and transmits the signal to the encoding compression module, and compresses and encodes according to a certain standard to reduce video frequency. Redundancy of information, using a lower bit rate to realize network transmission and storage of video. The encoding program uses the multimedia video processing tool FFmpeg, which provides a complete set of video recording, conversion and streaming audio and video solutions, including the current leading audio/video encoding library libavcodec, so as to realize MJPEG, MPEG-4, H .264 support. The system supports multi-stream technology, which can generate and transmit multiple streams with different frame rates and resolutions to meet the needs of different users.

The main control chip 5 is responsible for the scheduling of the entire system, coordinates the work between the various modules, and can directly control the encoding and compression module 4 and the network module 6. The network module 6 receives the control command of the main control chip and sends the encoded and compressed video to To the network, or receive control and access commands from the network, to achieve access to the camera, parameter modification and real-time browsing. Embedded Linux operating system is adopted, which integrates self-developed video analysis technology, which can automatically analyze and extract video content, filter useless video information, and automatically trigger events to change the resolution and frame of acceptable video content. rate, and send an alarm message to the client. The use of video analysis technology can greatly reduce storage costs and network bandwidth overhead, and more importantly, improve the level of intelligent monitoring.

The network module 6 adopts a standard RJ45 network interface, which can be easily connected to the Ethernet. In terms of network protocols, it supports TCP/IP, UDP, HTTP, FTP, Telnet, DHCP, NTP, DNS, DDNS, PPPOE and UPNP, etc. The transmission of video data adopts the implementation of the transmission protocol RTP and the real-time transmission control protocol RTCP to realize the real-time transmission control of the video stream code, and adopts the Qos mechanism to ensure that the video transmission bandwidth is at a stable level and more effectively utilize the broadband resources, so as to ensure the quality of video transmission. The control signal is transmitted through the TCP/IP protocol to ensure that the transmission is absolutely reliable, no packet loss, and the corresponding actions are completed.

In addition, the system has an external SD card as a buffer, which can realize the local temporary storage function. When the network module 7 detects a network failure, it can temporarily store the video in the SD card, which will effectively ensure that the video will be saved under temporary network problems. continuity and integrity.

Claims (7)

1. new network digital high-speed ball, formed by camera lens, ccd image sensor, A/D converter, compression coding module, main control chip, mixed-media network modules mixed-media, Flash memory module, Ram memory module and The Cloud Terrace module, it is characterized in that: ccd image sensor is connected with A/D converter, A/D converter is connected with main control chip by the compression coding module, and main control chip also is connected with mixed-media network modules mixed-media, Flash memory module, Ram memory module and The Cloud Terrace module.

2. new network digital high-speed ball according to claim 1 is characterized in that: described camera lens, employing the manual focusing lens.

3. new network digital high-speed ball according to claim 1 is characterized in that: described ccd image sensor employing Super ccd image sensor.

4. new network digital high-speed ball according to claim 1, it is characterized in that: described A/D converter adopts independently A/D module.

5. new network digital high-speed ball according to claim 1 is characterized in that: the embedded chip of described main control chip employing embedded Linux system.

6. network digital clipping the ball according to claim 1, it is characterized in that: described The Cloud Terrace module is comprised of decoder and motor, and motor adopts accurate differential stepping motor.

7. new network digital high-speed ball according to claim 1, it is characterized in that: described mixed-media network modules mixed-media adopts standard RJ45 network interface, support RTP/RTCp, UDP, HTTP, TCP/IP, many kinds of fidonetFidos of PPPOE, can directly send signal to Internet.

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