CN101312527A - Wireless camera terminal, wireless monitoring terminal and wireless monitoring system - Google Patents
Wireless camera terminal, wireless monitoring terminal and wireless monitoring system Download PDFInfo
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Abstract
The invention discloses a wireless camera terminal, a wireless monitoring terminal and a wireless monitoring system. The wireless camera terminal comprises an image sensor for generating an analogue signal image drawing a scene aimed and exposed by the wireless camera terminal and converting analogue and digit, an image processor for processing the digital data image and an image wireless emitter for segmenting and packaging the digit data image and loading the data packet on wireless wave to be sent out. The image wireless emitter adopts short range wireless transmission technique. The image sensor, the image processor and the image wireless emitter are physically independent with each other. Compared with the prior art, the invention adopts a short range wireless communication module, to realize direct wireless video communication between the image wireless emitter and the image wireless receiver in short range.
Description
[technical field]
The present invention relates to the monitoring field, particularly wireless camera terminal, wireless monitoring terminal and wireless supervisory control system.
[background technology]
Along with Development of Multimedia Technology, multimedia monitor system is used in fields such as safety precaution, remote monitoring, remote teaching, teleconference, remote demonstration, community service more and more, and big effect is focused in performance.At present, in most of units and the local system that monitors in real time by transmission of video or audio frequency of having realized, for example the office building of corresponding supervisory control system has been installed, has perhaps been had the biotope of fine safety management system at some, or even in some private residences etc.
Existing supervisory control system mainly is divided into simulation monitoring and digital supervision, simulation monitoring is an analog signal owing to what adopt, has the circuit exclusivity, the occupied bandwidth height, it is point-to-point technology, transmission range is near, and manageability is poor, poor image quality, do not have intelligent, the application scenario is little, narrow range, shortcoming such as locality is strong, yet the characteristics of digital supervision are: adopt digital coding, reduce occupied bandwidth greatly, the image quality height, storage takes up room and reduces, monitor message can send by network, real-time, easy to use, therefore replaced by digital supervision just gradually.
In order to guarantee enough bandwidth, existing digital supervision generally all is to adopt wire transmission, and promptly camera is transferred to monitor terminal for monitoring by cable with picture.In addition, existing digital supervision generally all is the centralized management technology of just using, and promptly a total Surveillance center is monitoring dozens of or up to a hundred cameras.Above-mentioned this digital supervision mode has following shortcoming, and first, camera is that wired mode is set up, install, safeguard, change is all inconvenient, the camera place of setting up also is subjected to the restriction of all geographical conditions in addition.
In addition, along with the development of internet, also used based on the digital monitor system of the Internet.For instance, a camera can be inserted the Internet, to Surveillance center, such design can make monitoring break away from the restriction of region to the view data that camera photographs via internet transmission.Yet still there is certain defective in this Internet digital monitor system, first, camera has to be erected near the internet interface; The second, camera needs wired connection to remaining between the internet interface; Three, can not be applicable to the place of access failure internet.
In addition, along with the 3G development of wireless communication devices, make that the realization based on the digital monitor system of 3G network becomes possibility.For instance, a camera can be linked to each other with the mobile communication terminal with 3G communication function, the camera shot image data is sent to monitor terminal by 3G network.Yet also there is certain defective in this 3G communication network digital monitor system, first, to set up 3G communication network cost very huge; The second, the expansion that the area coverage of 3G communication network can only be slowly is even the 3G communication network still has most of place not to be capped in the time of very ripe; Three, the monitoring operation cost by the 3G communication network can be very high, can not satisfy popular needs.
Therefore, demand proposing a kind of installation, wireless supervisory control system easy to use, with low cost urgently.
[summary of the invention]
The object of the present invention is to provide wireless camera terminal, wireless monitoring terminal and wireless supervisory control system, it has mobility advantage strong, easy to install and use, with low cost.
According to an aspect of the present invention, the invention provides a kind of wireless camera terminal, it comprises: imageing sensor is used for producing the analog signal image of describing this scene when it aims at scene exposure, and described analog signal image is carried out generating image digital data after the analog-to-digital conversion; Image processor is used for described image digital data is handled; The image wireless reflector is used for launching cutting apart packing from the image digital data of image processor and packet being loaded on the radio wave; What wherein said image wireless reflector adopted is the short range wireless transmission technology, and described imageing sensor, image processor and image wireless reflector are physically independent modules.
Further, described short range wireless transmission technology is a 2.4G frequency range Radio Transmission Technology.
Further, all added frame head and postamble sign in every frame image data, described image wireless reflector is also together put into packet with frame head and postamble when a frame image data being cut apart packing.
Further, after the postamble data are put into a packet, as this packet still less than, then the remaining bit in this packet is mended 0 or 1.
Further, described image processor comprises: graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI), described graphics processing unit is used for the image digital data from imageing sensor is comprised the image processing of image format conversion, image compression, and described direct store access controller will be carried to Serial Peripheral Interface (SPI) through the view data of overcompression according to the SPI agreement.
According to a further aspect in the invention, the invention provides a kind of monitor terminal, it comprises: the image wireless receiver is used to receive image data packets; Image processor is used to receive described image data packets and packet is spliced into complete two field picture, afterwards described two field picture is carried out image processing; Image display, the two field picture that is used to receive from image processor shows; What wherein said image wireless receiver adopted is the short range wireless transmission technology, and described image display, image processor and image wireless receiver are physically independent modules.
Further, described short range wireless transmission technology is a 2.4G frequency range Radio Transmission Technology.
Further, described image processor splices by frame head in the recognition image packet and postamble and finishes the complete view data of a frame.
Further, when recognizing the postamble sign, the remaining data of postamble back all is rejected in this packet.
Further, described image processor comprises graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI), described direct store access controller is carried to graphics processing unit with the image data packets that the image wireless receiver transfers to Serial Peripheral Interface (SPI), and described graphics processing unit comprises the image processing of decompression to the whole frame image.
According to a further aspect in the invention, the invention provides a kind of wireless supervisory control system, it comprises: wireless camera terminal and wireless monitoring terminal.Described wireless camera terminal, it comprises: imageing sensor is used for producing the analog signal image of describing this scene when it aims at scene exposure, and described analog signal image is carried out generating image digital data after the analog-to-digital conversion; Image processor is used for described image digital data is handled; The image wireless reflector is used for launching cutting apart packing from the image digital data of image processor and packet being loaded on the radio wave; What wherein said image wireless reflector adopted is the short range wireless transmission technology, and described imageing sensor, image processor and image wireless reflector are physically independent modules.Described wireless monitoring terminal, it comprises: the image wireless receiver is used to receive image data packets; Image processor is used to receive described image data packets and packet is spliced into complete two field picture, afterwards described two field picture is carried out image processing; Image display, the two field picture that is used to receive from image processor shows; What wherein said image wireless receiver adopted is the short range wireless transmission technology, and described image display, image processor and image wireless receiver are physically independent modules.
Technical solution of the present invention is compared with existing scheme, by adopting the short-distance wireless communication module, makes image wireless reflector and image wireless receiver can realize direct wireless video communication in short distance.In addition, owing to be based on according to the video flowing design whole system framework of serving as theme, described imageing sensor, image processor and image wireless reflector all are three integrated circuits independently mutually, the video flowing of corresponding video flowing obtains, handles and send respectively, described imageing sensor, image processor and image wireless reflector also are independently three integrated circuits, reception, processing and the demonstrations of corresponding video flowing respectively mutually.Like this, when each product development or renewal, the product that can adopt any similar functions is as an integrated circuit among the present invention.Like this, when each product development or renewal, it is just passable only to need to upgrade above-mentioned six functional modules, and the new product that each functional module can be had similar functions substitutes.
[description of drawings]
Fig. 1 is the block diagram of an embodiment of wireless supervisory control system of the present invention;
Fig. 2 A is the functional-block diagram of the multimedia processor in the wireless camera terminal in the wireless supervisory control system of the present invention;
Fig. 2 B is the functional-block diagram of the multimedia processor in the wireless monitoring terminal in the wireless supervisory control system of the present invention.
[embodiment]
Below in conjunction with accompanying drawing the specific embodiment of the invention is described.
In one embodiment, the invention provides a kind of wireless supervisory control system 10, as shown in Figure 1, described wireless supervisory control system 10 includes wireless camera terminal 100 and wireless monitoring terminal 200, described unlimited camera shooting terminal 100 directly carries out the wireless video communication with wireless monitoring terminal, between the two without any the relaying communication apparatus.Usually, wireless camera terminal 100 can corresponding wireless monitoring terminal 200, also can corresponding several wireless monitoring terminals 200.Same, described wireless monitoring terminal 200 can corresponding wireless camera terminal 100, also can corresponding several wireless camera terminals 100.Like this, no matter in which kind of place, which kind of environment, the distance that needs only wireless monitoring terminal 200 and wireless camera terminal 100 is in preset range, and both just can directly carry out video communication, and do not need to rely on any trunking, network etc.
Described wireless camera terminal 100 includes imageing sensor 120, image processor 140 and image wireless reflector 160.Described imageing sensor 120 is used for producing the analog signal image of describing this scene when it aims at scene exposure, then described analog signal image is carried out generating image digital data after the analog-to-digital conversion.Described imageing sensor 120 can be the COMS imageing sensor, also can be ccd image sensor.Described image processor 140 is used for described image digital data is handled, and image digital data is transferred to described image wireless reflector 160 after will handling.The described image digital data that described image wireless reflector 160 will receive is cut apart packing and packet is loaded on the radio wave and launches.Wherein said image wireless reflector 160 is to adopt 2.4G frequency range short range wireless transmission technology, and its transmission range generally can be greater than 100 less than 1 km.In the prior art, described 2.4G short-distance wireless reflector generally is only applicable to the wireless transmission of audio frequency, such as being used for the wireless short-distance intercom.In order to make its transmission that can be applicable to video data, every frame image data that described image wireless reflector 160 sends all has been added into frame head and postamble sign, and frame head means the beginning of a frame image data, and postamble means the end of a frame image data.Described image wireless reflector 160 is also together put into packet with frame head and postamble when a frame image data being cut apart packing.If after the postamble data are put into a packet, this packet still less than, then the remaining bit in this packet is mended 0 or 1.
Described wireless monitoring terminal 200 includes image wireless receiver 260, image processor 240 and image display 220.Described image wireless receiver 260 receives the view data of described image wireless reflector 160 emissions, and the continuous images data in the packet are sent to image processor 240, is spliced into complete two field picture by image processor 240.Described image processor 240 can be discerned described frame head and how several packet data splicings be become the complete view data of a frame with postamble with definite.When recognizing the postamble sign, the remaining data of postamble back all is rejected in this packet.Described image wireless receiver 260 is corresponding with described image wireless reflector 160, also is to adopt 2.4G short range wireless transmission technology.Described image processor 240 is used for the described image digital data that receives is handled, and image digital data is transferred to described image display 220 after will handling.Described image display 220 can be an analog display unit, and this moment, it can be used for described image digital data being converted to analog image by digital to analog converter and showing.Described image display 220 can be a numeric display unit also, and such as LCD display, this moment, it can directly show described image digital data.
Owing to adopted 2.4G short range wireless transmission technology, make between camera shooting terminal among the present invention and the monitor terminal and need just can not realize between the two direct video communication by any trunking or network.Brought a lot of convenience not only for people's production, life, make that also the operation cost of supervisory control system is very low, all have competitiveness than each other various monitor mode in the prior art, practicality is more intense.In addition, though wireless transmission distance is shorter, this does not hinder the competitiveness of this monitor mode in some application.In addition, owing to be the 2.4G wireless communication mode, the communication bandwidth also can satisfy general image transmission fully, is the image of SIF such as image, and that transmission speed generally can reach for 12 frame/seconds.
Described wireless supervisory control system 10 can be used for various monitoring and use.With the nurse child be example come to the wireless supervisory control system among the present invention should be used for explain, in can installing wireless camera terminal 100 between child's Yu prefabricated house, to take child's active situation, the caregiver then can carry wireless monitoring terminal 200 and do some other thing, can youngster such as mentioning neighbour's's seat, go to buy vegetables near food market, once or the like to activity downstairs, the caregiver can be at any time according to wireless monitoring terminal supervision child's active situation.
In one embodiment, described image processor 140 comprises graphics processing unit 142, direct store access controller (Direct Memory Access Controller, be called for short dma controller) 144 and Serial Peripheral Interface (SPI) 146 (Serial Peripheral Interface is called for short SPI).Described graphics processing unit 142 is used for the image digital data from imageing sensor is carried out image processing, wherein can comprise image processing such as gain adjustment, white balance adjustment, image format conversion, the detection of bad point, compensating bad point, image compression.Described dma controller 144 will be carried to Serial Peripheral Interface (SPI) 146 through the view data of overcompression according to the SPI agreement, and described image wireless reflector 160 is from the reception view data of Serial Peripheral Interface (SPI) 146.Because described dma controller 144 is by hard-wired, can alleviate the burden of microcontroller in the described image processor 140 so on the one hand, also improve the transporting velocity and the stability of view data on the other hand, satisfied the bandwidth of 2.4G short-distance wireless reflector.When not introducing dma controller, be to be carried to Serial Peripheral Interface (SPI) 146 through the view data of overcompression according to the SPI agreement by software, the mode of this software control, microcontroller participates in constantly in the described image processor 140 of needs on the one hand, and the transporting velocity of view data and stability also can be relatively poor on the other hand.
Same, described image processor 240 also comprises graphics processing unit 242, direct store access controller 244 and Serial Peripheral Interface (SPI) 246.Described direct store access controller 244 is carried to graphics processing unit 242 with the view data that image wireless receiver 260 transfers to Serial Peripheral Interface (SPI) 246.Send to image-display units 220 after the image processing such as 242 pairs of images of described graphics processing unit decompress.
In addition, be to serve as theme among the present invention according to video flowing, cast aside concrete device, design whole system framework.The imageing sensor 120 of described wireless camera terminal 100, image processor 140 and image wireless reflector 160 are physically independently three functional modules or integrated circuit mutually, the three phases of corresponding video flowing respectively, i.e. the obtaining of video flowing, the processing of video flowing and the transmission of video flowing.Herein physically be meant that independently each module all is a relatively independent physics integral body mutually, such as image processor 120 is chip pieces, and the image wireless reflector is other chip piece.The imageing sensor 220 of described wireless camera terminal 200, image processor 240 and image wireless reflector 260 also are physically independently three functional modules or integrated circuit mutually, the three phases of the corresponding video flowing of difference, i.e. the demonstration of the processing of the reception of video flowing, video flowing and video flowing.Like this, when each product development or renewal, it is just passable only to need to upgrade above-mentioned six functional modules, the new product that each functional module can be had similar functions substitutes, such as can arbitrarily adopting any a image sensor chip popular on the market to replace old image sensor chip, also can adopt any a image wireless emitter chip popular on the market to replace old image wireless emitter chip.Then, how to cooperate, realize implementation procedure, fast the release design and the product of high-quality from integral body to part according to the interface of the characteristics of concrete chip design various piece.
Be understandable that, for those of ordinary skills, can be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, and all these changes or replacement all should belong to the protection range of the appended claim of the present invention.
Claims (14)
1, a kind of wireless camera terminal is characterized in that it comprises:
Imageing sensor is used for producing the analog signal image of describing this scene when it aims at scene exposure, and described analog signal image is carried out generating image digital data after the analog-to-digital conversion;
Image processor is used for described image digital data is handled;
The image wireless reflector is used for launching cutting apart packing from the image digital data of image processor and packet being loaded on the radio wave; What wherein said image wireless reflector adopted is the short range wireless transmission technology, and described imageing sensor, image processor and image wireless reflector are physically independent modules.
2, wireless camera terminal as claimed in claim 1 is characterized in that: described short range wireless transmission technology is a 2.4G frequency range Radio Transmission Technology.
3, wireless camera terminal as claimed in claim 1, it is characterized in that: in every frame image data, all added frame head and postamble sign, described image wireless reflector is also together put into packet with frame head and postamble when a frame image data being cut apart packing.
4, wireless camera terminal as claimed in claim 3 is characterized in that: after the postamble data are put into a packet, as this packet still less than, then the remaining bit in this packet is mended 0 or 1.
5, wireless camera terminal as claimed in claim 1, it is characterized in that: described image processor comprises: graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI),
Described graphics processing unit is used for the image digital data from imageing sensor is comprised the image processing of image format conversion, image compression, and described direct store access controller will be carried to Serial Peripheral Interface (SPI) through the view data of overcompression according to the SPI agreement.
6, a kind of monitor terminal is characterized in that, it comprises:
The image wireless receiver is used to receive image data packets;
Image processor is used to receive described image data packets and packet is spliced into complete two field picture, afterwards described two field picture is carried out image processing;
Image display, the two field picture that is used to receive from image processor shows; Wherein
What described image wireless receiver adopted is the short range wireless transmission technology, and described image display, image processor and image wireless receiver are physically independent modules.
7, wireless monitoring terminal as claimed in claim 6 is characterized in that: described short range wireless transmission technology is a 2.4G frequency range Radio Transmission Technology.
8, wireless monitoring terminal as claimed in claim 6 is characterized in that: described image processor splices by frame head in the recognition image packet and postamble finishes the complete view data of a frame.
9, wireless monitoring terminal as claimed in claim 8 is characterized in that: when recognizing the postamble sign, the remaining data of postamble back all is rejected in this packet.
10, wireless monitoring terminal as claimed in claim 6 is characterized in that: described image processor comprises graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI),
Described direct store access controller is carried to graphics processing unit with the image data packets that the image wireless receiver transfers to Serial Peripheral Interface (SPI), and described graphics processing unit comprises the image processing of decompression to the whole frame image.
11, a kind of wireless supervisory control system is characterized in that, it comprises:
The wireless camera terminal, it comprises:
Imageing sensor is used for producing the analog signal image of describing this scene when it aims at scene exposure, and described analog signal image is carried out generating image digital data after the analog-to-digital conversion;
Image processor is used for described image digital data is handled;
The image wireless reflector is used for launching cutting apart packing from the image digital data of image processor and packet being loaded on the radio wave; What wherein said image wireless reflector adopted is the short range wireless transmission technology, and described imageing sensor, image processor and image wireless reflector are physically independent modules;
Wireless monitoring terminal, it comprises:
The image wireless receiver is used to receive image data packets;
Image processor is used to receive described image data packets and packet is spliced into complete two field picture, afterwards described two field picture is carried out image processing;
Image display, the two field picture that is used to receive from image processor shows; What wherein said image wireless receiver adopted is the short range wireless transmission technology, and described image display, image processor and image wireless receiver are physically independent modules.
12, wireless supervisory control system as claimed in claim 11 is characterized in that: described short range wireless transmission technology is a 2.4G frequency range Radio Transmission Technology.
13, wireless supervisory control system as claimed in claim 11, it is characterized in that: in every frame image data, all added frame head and postamble sign, described image wireless reflector is also together put into packet with frame head and postamble when a frame image data being cut apart packing;
The image processor of described monitor terminal splices by frame head in the recognition image packet and postamble finishes the complete view data of a frame.
14, wireless supervisory control system as claimed in claim 11 is characterized in that:
The image processor of described wireless camera terminal comprises: graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI), described graphics processing unit is used for the image digital data from imageing sensor is comprised the image processing of image format conversion, image compression, and described direct store access controller will be carried to Serial Peripheral Interface (SPI) through the view data of overcompression according to the SPI agreement;
The image processor of described wireless monitoring terminal comprises graphics processing unit, direct store access controller and Serial Peripheral Interface (SPI), described direct store access controller is carried to graphics processing unit with the image data packets that the image wireless receiver transfers to Serial Peripheral Interface (SPI), and described graphics processing unit comprises the image processing of decompression to the whole frame image.
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| CN 200810116609 CN101312527A (en) | 2008-07-14 | 2008-07-14 | Wireless camera terminal, wireless monitoring terminal and wireless monitoring system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101815216A (en) * | 2010-03-03 | 2010-08-25 | 宁波大学 | Anti-noise wireless multimedia broadcasting signal transmission method |
| CN101853559A (en) * | 2010-06-22 | 2010-10-06 | 南昌市恒鑫电子技术有限公司 | 3G whole-process compound wireless intelligent mobile video monitoring alarm |
| CN101888643A (en) * | 2010-06-04 | 2010-11-17 | 青岛易特优电子有限公司 | Tunnel mobile wireless communication system |
| CN101950489A (en) * | 2009-07-08 | 2011-01-19 | 瑞萨电子株式会社 | Bus location indicating method, bus video acquiring method and video delivery method |
| CN103106638A (en) * | 2011-11-14 | 2013-05-15 | 辉达公司 | Graphic processing device for real-time image processing |
| CN103313134A (en) * | 2012-03-08 | 2013-09-18 | 三星电子株式会社 | Image processing apparatus and method for processing image thereof |
| CN103533299A (en) * | 2013-09-23 | 2014-01-22 | 北京矿冶研究总院 | High-reliability mine image transmission emergency rescue system |
| CN110248038A (en) * | 2019-06-05 | 2019-09-17 | 广东工业大学 | A kind of image transfer method and system based on WIFI |
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2008
- 2008-07-14 CN CN 200810116609 patent/CN101312527A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101950489A (en) * | 2009-07-08 | 2011-01-19 | 瑞萨电子株式会社 | Bus location indicating method, bus video acquiring method and video delivery method |
| CN101815216A (en) * | 2010-03-03 | 2010-08-25 | 宁波大学 | Anti-noise wireless multimedia broadcasting signal transmission method |
| CN101815216B (en) * | 2010-03-03 | 2011-10-26 | 宁波大学 | Anti-noise wireless multimedia broadcasting signal transmission method |
| CN101888643A (en) * | 2010-06-04 | 2010-11-17 | 青岛易特优电子有限公司 | Tunnel mobile wireless communication system |
| CN101853559A (en) * | 2010-06-22 | 2010-10-06 | 南昌市恒鑫电子技术有限公司 | 3G whole-process compound wireless intelligent mobile video monitoring alarm |
| CN103106638A (en) * | 2011-11-14 | 2013-05-15 | 辉达公司 | Graphic processing device for real-time image processing |
| US9508109B2 (en) | 2011-11-14 | 2016-11-29 | Nvidia Corporation | Graphics processing |
| CN103313134A (en) * | 2012-03-08 | 2013-09-18 | 三星电子株式会社 | Image processing apparatus and method for processing image thereof |
| CN103533299A (en) * | 2013-09-23 | 2014-01-22 | 北京矿冶研究总院 | High-reliability mine image transmission emergency rescue system |
| CN110248038A (en) * | 2019-06-05 | 2019-09-17 | 广东工业大学 | A kind of image transfer method and system based on WIFI |
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