CN102111609A

CN102111609A - Monitoring system

Info

Publication number: CN102111609A
Application number: CN2009103124471A
Authority: CN
Inventors: 谢明志
Original assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Current assignee: Hongfujin Precision Industry Shenzhen Co Ltd; Hon Hai Precision Industry Co Ltd
Priority date: 2009-12-28
Filing date: 2009-12-28
Publication date: 2011-06-29

Abstract

A monitoring system, comprising a plurality of data acquisition devices and a monitoring host connected to the plurality of data acquisition devices through a network cable suitable for long-distance transmission, each data acquisition device includes a video interception device, an image compression coding device, a first CPU, a memory, a first network transmission data conversion device, a first decoder, a first microcontroller, a first digital-to-analog converter, a first transformer and a first network The connection device, the monitoring host includes a second network connection device, a second transformer, a second digital-to-analog converter, a second decoder, a second microcontroller, a second network transmission data conversion device and a The second CPU, the video interception device processes the collected video signal and transmits it to the monitoring host through the network transmission line for display. The monitoring system of the invention has a wide range of space.

Description

Supervisory control system

Technical field

The present invention relates to a kind of supervisory control system.

Background technology

At present, by various data acquisition equipments for example the supervisory control system that is connected to form by twisted-pair feeder of web camera and monitoring host computer obtained using widely.This supervisory control system has the big advantage of monitor data amount, and each web camera all is provided with IP (Internet Protocol, a procotol) address independently.Like this, the user just can connect the image that corresponding video camera also can watch video camera to take by the IP address that obtains video camera at the monitoring host computer end.But owing to link to each other by twisted-pair feeder between the web camera of this supervisory control system and the monitoring host computer, the transmission range of twisted-pair feeder is very limited, makes this supervisory control system to use in limited spatial dimension thus.

Summary of the invention

In view of above content, be necessary to provide a kind of usage space scope wide supervisory control system.

A kind of supervisory control system, comprise the monitoring host computer that plurality of data collecting device and links to each other by the network connection that is applicable to long Distance Transmission with described plurality of data collecting device, each data acquisition equipment comprises a video intercepting equipment, one image compression coding device, one the one CPU, one memory, one first transmitted data on network conversion equipment, one first decoder, one first microcontroller, one first digital to analog converter, one first transformer and one first network access device, monitoring host computer comprises one second network access device, one second transformer, one second digital to analog converter, one second decoder, one second microcontroller, one second transmitted data on network conversion equipment and one the 2nd CPU, described video intercepting equipment is used to gather vision signal, described image compression coding device compresses described vision signal, be stored in the described memory by a described CPU, the first transmitted data on network conversion equipment is converted to the physical layer transmission signal that is suitable for the twisted-pair feeder transmission with the vision signal of compression, described first decoder is low-frequency pulse signal with the physical layer transmission conversion of signals under the control of described first microcontroller, described first digital to analog converter is converted to low-frequency pulse signal and is transferred to first transformer after the analog signal and carries out sending to described monitoring host computer by described first network access device and described network connection after the voltage transitions, described second transformer of described monitoring host computer receives the analog signal that data acquisition equipment sends by described second network access device, and described analog signal carried out being sent to described second digital to analog converter after the voltage transitions, the analog signal conversion of described second digital to analog converter after with voltage transitions is low-frequency pulse signal, described second decoder is converted to the physical layer transmission signal that is suitable for the twisted-pair feeder transmission with low-frequency pulse signal under the control of described second microcontroller, the physical layer transmission conversion of signals that the described second transmitted data on network conversion equipment will be suitable for the twisted-pair feeder transmission is that vision signal shows under the control of described the 2nd CPU.

Supervisory control system of the present invention is gathered vision signal in real time by video intercepting equipment, through the image compression coding device, first decoder, first digital to analog converter and first transformer are handled the back and are sent to described monitoring host computer by described first network access device and the network connection that is suitable for long Distance Transmission, second transformer of described monitoring host computer receives the analog signal that data acquisition equipment sends by described second network access device, successively by second digital to analog converter, second decoder, the second transmitted data on network conversion equipment is handled the back and is shown under the control of described the 2nd CPU.Supervisory control system of the present invention is undertaken can making video intercepting equipment that the vision signal of gathering is transferred to monitoring host computer at a distance after the signal processing by relevant device.

Description of drawings

Fig. 1 is the Organization Chart of the better embodiment of supervisory control system of the present invention.

Fig. 2 is the block diagram that the data acquisition equipment of Fig. 1 links to each other with monitoring host computer.

The main element symbol description

Data acquisition equipment	10
		Coaxial cable	20
Monitoring host computer	30
		Video intercepting equipment	102
The image compression coding device	104
		The one CPU	106
Memory	108
		The first transmitted data on network conversion equipment	110
First decoder	112
		First microcontroller	114
First digital to analog converter	116
		First transformer	118
First network access device	120
		Second network access device	302
Second transformer	304
		Second digital to analog converter	306
Second decoder	308
		Second microcontroller	310
The second transmitted data on network conversion equipment	312
		The 2nd CPU	314

Embodiment

Please common reference Fig. 1 and Fig. 2, first better embodiment of supervisory control system of the present invention comprise plurality of data collecting device 10 and one with network connection such as coaxial cable 20 monitoring host computer 30 that link to each other of described plurality of data collecting device 10 by being applicable to long Distance Transmission.Thereby the long data acquisition equipment 10 of supervisory control system of the present invention that makes of the transmission range of coaxial cable 20 can be transferred to monitoring host computer 30 at a distance by long coaxial cable 20.In the present embodiment, described plurality of data collecting device 10 is network camera.In other embodiments, also can adopt other to be fit to the network connection of long Distance Transmission.

Each data acquisition equipment 10 comprises a video intercepting equipment 102, an image compression coding device 104, one the one CPU (Central Processing Unit, central processing unit), 106, one memory 108, one first transmitted data on network conversion equipment 110, one first decoder 112, one first microcontroller 114, one first digital to analog converter 116, one first transformer 118 and one first network access device 120.Described video intercepting equipment 102, image compression coding device 104, a CPU 106, the first transmitted data on network conversion equipment 110, first decoder 112, first digital to analog converter 116, first transformer 118 and first network access device 120 connect in regular turn in turn, the one CPU 106 also links to each other with memory 108, first decoder 112 also links to each other with first microcontroller 114, and first network access device 120 links to each other with monitoring host computer 30 by coaxial cable 20.

Monitoring host computer 30 comprises one second network access device 302, one second transformer 304, one second digital to analog converter 306, one second decoder 308, one second microcontroller 310, one second transmitted data on network conversion equipment 312 and one the 2nd CPU314.Described second network access device 302, second transformer 304, second digital to analog converter 306, second decoder 308, the second transmitted data on network conversion equipment 312 and the 2nd CPU 314 connect in regular turn in turn.Second decoder 308 also links to each other with second microcontroller 310, and second network access device 302 links to each other with first network access device 120 by coaxial cable 20.In the present embodiment, described first and second network access device 120,302 is coaxial cable connector, video intercepting equipment 102 is one to comprise the equipment of CMOS/CCD (Complementary Metal Oxide Semiconductor/Charge-coupled Device, complementary metal oxide semiconductors (CMOS)/charge coupled cell).First and second decoder 112,308 is a VDSLDMT (Very-high-bit-rate Digital Subscriber Loop Discrete Multitone, ultrahigh speed number loop Discrete Multitone technology) equipment, first and second digital to analog converter 116,306 is an AFE (Analog Front End, an AFE (analog front end)) element.

Described video intercepting equipment 102 is used to gather vision signal, for example the vision signal of the image correspondence of video intercepting equipment 102 shootings.Image compression coding device 104 compresses the vision signal that video intercepting equipment 102 is gathered, and is stored in the memory 108 by a CPU 106.Compressed format can adopt MPEG/MJPEG forms such as (Moving Pictures ExpertsGroup/Motion Joint Photographic Experts Group, dynamic image expert groups/associating dynamic image expert group).The first transmitted data on network conversion equipment 110 reads the compression data that is stored in the memory 108 and the compression data that reads is converted to the physical layer transmission signal that is suitable for the twisted-pair feeder transmission.First decoder 112 is low-frequency pulse signal with the physical layer transmission conversion of signals under the control of first microcontroller 114.First digital to analog converter 116 is converted to low-frequency pulse signal and is transferred to first transformer 118 after the analog signal and carries out after the voltage transitions by first network access device 120 and be applicable to that the coaxial cable 20 of long-distance transmissions sends to monitoring host computer 30.

Second transformer 304 of monitoring host computer 30 receives the analog signal that data acquisition equipment 10 sends by second network access device 302, and this analog signal is carried out being sent to second digital to analog converter 306 after the voltage transitions.Second digital to analog converter 306 is low-frequency pulse signal with the analog signal conversion after the voltage transitions.Second decoder 308 is converted to low-frequency pulse signal the physical layer transmission signal that is suitable for the twisted-pair feeder transmission under the control of second microcontroller 310.The physical layer transmission conversion of signals that the second transmitted data on network conversion equipment 312 will be suitable for the twisted-pair feeder transmission is that vision signal is being presented at the image of watching video intercepting equipment 102 to take for the user on the display under the control of the 2nd CPU 314.

Supervisory control system of the present invention just can realize that by changing the internal structure of data acquisition equipment 10 and monitoring host computer 30 data acquisition equipment 10 utilizes coaxial cable 20 to be transferred to corresponding monitoring host computer 30 at a distance and carries out the image that display video intercepting equipment 102 is taken.And the framework of this supervisory control system is simple, applicability is strong.

Claims

1. A monitoring system, comprising some data acquisition devices and a monitoring host connected to said plurality of data acquisition devices by a network connection line suitable for long-distance transmission, each data acquisition device includes a video capture device, an image Compression encoder, a first CPU, a memory, a first network transmission data conversion equipment, a first decoder, a first microcontroller, a first digital-to-analog converter, a first transformer and a first A network connection device, the monitoring host includes a second network connection device, a second transformer, a second digital-to-analog converter, a second decoder, a second microcontroller, and a second network transmission data conversion device And a second CPU, the video interception device is used to collect video signals, the image compression encoder compresses the video signals, stores them in the memory through the first CPU, and converts the first network transmission data The device converts the compressed video signal into a physical layer transmission signal suitable for twisted pair transmission, and the first decoder converts the physical layer transmission signal into a low-frequency pulse signal under the control of the first microcontroller , the first digital-to-analog converter converts the low-frequency pulse signal into an analog signal, then transmits it to the first transformer for voltage conversion, and then sends it to the monitoring host through the first network connection device and the network connection line, The second transformer of the monitoring host receives the analog signal sent by the data acquisition device through the second network connection device, and performs voltage conversion on the analog signal and transmits it to the second digital-to-analog converter, so The second digital-to-analog converter converts the voltage-converted analog signal into a low-frequency pulse signal, and the second decoder converts the low-frequency pulse signal into a pulse signal suitable for For the physical layer transmission signal transmitted by twisted pair, the second network transmission data conversion device converts the physical layer transmission signal suitable for twisted pair transmission into a video signal and displays it under the control of the second CPU.

2. The monitoring system according to claim 1, characterized in that: said data collection devices are network cameras.

3. The monitoring system according to claim 1, wherein the network connection line is a coaxial cable.

4. The monitoring system according to claim 3, wherein the first and second network connection devices are coaxial cable connectors.

5. monitoring system as claimed in claim 1, is characterized in that: described video interception device is a device that comprises CMOS or CCD, and described first and second decoder is a VDSL DMT device, and described first and the second digital-to-analog converter is an AFE element.