CN106961582A - Wireless consecutive image Transmission system based on ZigBee - Google Patents
Wireless consecutive image Transmission system based on ZigBee Download PDFInfo
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- CN106961582A CN106961582A CN201710176947.1A CN201710176947A CN106961582A CN 106961582 A CN106961582 A CN 106961582A CN 201710176947 A CN201710176947 A CN 201710176947A CN 106961582 A CN106961582 A CN 106961582A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/18—Self-organising networks, e.g. ad-hoc networks or sensor networks
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Abstract
The invention provides a kind of wireless consecutive image Transmission system based on ZigBee, including host computer application subsystem, aggregation node subsystem, image sensor subsystem, the host computer subsystem is connected with aggregation node subsystem, aggregation node subsystem and image transducer subsystem wireless connection, the aggregation node subsystem and image transducer subsystem include wireless communication module, described image sensor subsystem also includes camera module, is connected between the host computer subsystem and aggregation node subsystem by serial ports.Compared with prior art, the wireless consecutive image Transmission system based on ZigBee that the present invention is provided, can adapt to longer transmission range, is not easily susceptible to the influence of image pixel size, transmission range, picture quality is higher, the frame per second of consecutive image is also higher.
Description
Technical field
The present invention relates to a kind of wireless consecutive image Transmission system based on ZigBee, belong to radio communication and image neck
Domain.
Background technology
ZigBee is a kind of emerging short distance, low rate radio network technique, and it is one group and is based on IEEE802.15.4
What wireless standard was developed, about the technical standard in terms of networking, safety and application software, it is mainly suitable for being used to automatically control
And remote control field, various equipment can be embedded in.
ZigBee technologies have following features：
1st, high reliability：Using csma/conflict avoidance (Carrier Sense Multiple Access
With Collision Avoidance, CSMA/CA) technology avoid send data when competition and conflict；Use band response
Transmission means and retransmission mechanism；Ensure data using CRC (Cyclical Redundancy Check, CRC)
Correctness.
2nd, low-power consumption：It is tens milliwatts under terminal equipment in communication state, is tens microwatts under sleep pattern.Treated in low power consumption
2 No. 5 dry cells of section can support that 1 node works 6 months~24 months under machine pattern.
3rd, it is inexpensive：ZigBee chip costs only have two dollars or so, and ZigBee agreements exempt from patent fee.
4th, high security：ZigBee provide three-level safe mode, including without security settings, use Access Control inventory
Prevent from illegally obtaining data and using Advanced Encryption Standard (Advanced Encryption Standard with 128-
Bit key, AES-128) symmetric cryptography, flexibly to determine its security attribute.
5th, time delay is short：Communication delay and the time delay activated from resting state are all very short, and typical search equipment delay is
30ms, the time delay of dormancy activation is 15ms, and the time delay of vehicular equipment channel access is 15ms.
6th, network capacity is big：Each ZigBee networks can at most support 65535 equipment.
Relative to existing various wireless communication technologys, the characteristics of ZigBee technologies have low-power consumption and low cost is adapted to
In the carrying less business of data traffic.
ZigBee appliance protocol stack system structures schematic diagram is as shown in figure 1, with reference to open system interconnection (Open System
Interconnect, OSI) model, application layer (Application Layer, APL), Internet are followed successively by from top to bottom
(Network Layer, NWK), MAC layer (Medium Access Layer, MAC) and physical layer (Physical
Layer, PHY), wherein application layer is by application (at most 240), ZigBee device objects (ZigBee Device
Object, ZDO) and application support sublayer (Application Support Sub-layer, APS) composition.Additionally formulate
Secure Service layer, is that NWK and APS provide security service.
The control application and the Internet of Things correlation of transducing signal transmission that ZigBee is very suitable under low data rate are answered
With under the effort of scholars and engineers and technicians, by development for many years, ZigBee technology has gradually moved towards actual and answered
Field, a main standard as short range wireless transmission, and towards miniaturization, multifunction, intellectuality, low work(
The direction of consumption is developed.
The initial purpose of ZigBee technology development is not for transmitting the multimedia messages such as voice, image and video, passing
The ZigBee technology of system is that simple environmental data (such as temperature, humidity, light intensity are realized on the Node of energy critical constraints
Deng) collection, transmission and handle.But with the continuous lifting of environment comprehensive monitoring demand, people are more in the urgent need to transmission
Data volume, such as voice, image, video information, to realize finer environmental monitoring, do not have such as in mountain area, mine
The place of public network signal is also required to be operated between personnel when necessary, it is necessary to real-time data acquisition and environmental monitoring
Contact.
The content of the invention
In view of in place of above-mentioned the deficiencies in the prior art, it is an object of the invention to provide a kind of wirelessly connecting based on ZigBee
Continuous image delivering system, including including host computer application subsystem, aggregation node subsystem, image sensor subsystem, it is described
Host computer subsystem is connected with aggregation node subsystem, aggregation node subsystem and image transducer subsystem wireless connection, institute
Stating aggregation node subsystem and image transducer subsystem includes wireless communication module, and described image sensor subsystem is also wrapped
Camera module is included, is connected between the host computer subsystem and aggregation node subsystem by serial ports.
It is preferred that, above-mentioned host computer subsystem realize host computer initialization of (a) serial ports, instruction send, data receiver and inspection with
And image is preserved, host computer is connected with aggregation node by serial ports, is sent and instructed to aggregation node by RS-232 serial ports.
It is preferred that, above-mentioned aggregation node subsystem realizes that aggregation node initialization, data receiver and data are sent；Convergence section
Point initialization includes protocol stack initialization and the initialization of wireless communication module peripheral circuit；Data receiver includes wireless receiving
The data sent from imaging sensor node, and the instruction from host computer is received by serial ports；Data, which are sent, includes wireless hair
Send instruction to give imaging sensor multi-node wireless communication module, and host computer is sent data to by serial ports.
It is preferred that, above-mentioned image transducer subsystem includes imaging sensor node initializing, data receiver and data hair
Send；Imaging sensor node initializing refers to protocol stack initialization and the initialization of radio communication peripheral circuit；Data receiver bag
The instruction that wireless receiving is sent from aggregation node is included, and the data from camera are received by serial ports；Data, which are sent, to be included
Wireless transmission data send instructions to camera to aggregation node, and by serial ports.
It is preferred that, above-mentioned host computer application subsystem includes serial communication modular and image storage module.Serial communication mould
Block includes initialization serial ports, and the initialization of control camera and the order taken pictures are sent to aggregation node by RS-232 Serial Port Lines
Frame, while also to receive camera acknowledgement frame and the image data frame from aggregation node.Image storage module by image with
JPEG file formats are saved in disk file system.
It is preferred that, aggregation node realizes relay forwarding in above-mentioned aggregation node subsystem, and host computer passes through RS-232 serial ports
Line sends the initialization of control camera and the command frame taken pictures to aggregation node, and aggregation node forwards command frame with not accepting or rejecting
Give imaging sensor node；Aggregation node receives the acknowledgement frame and image data frame that imaging sensor node wireless is sent, and sentences
The type of disconnected frame, frame head if image data frame, is then removed, be forwarded to payload by RS-232 Serial Port Lines upper
Machine, if other kinds of data frame, then be forwarded directly to host computer.When receiving image data frame, aggregation node will also
Judge whether the image data frame received is last frame.
Compared with prior art, the wireless consecutive image Transmission system based on ZigBee that provides of the present invention, can adapt to compared with
Long transmission range, is not easily susceptible to the influence of image pixel size, transmission range, and picture quality is higher, the frame per second of consecutive image
Also it is higher.
Brief description of the drawings
Fig. 1 is Zigbee protocol stack architectural schematic；
Fig. 2 is the wireless consecutive image Transmission system schematic diagram of the invention based on ZigBee；
Fig. 3 is the wireless consecutive image Transmission system operating diagram of the invention based on ZigBee；
Fig. 4 is the wireless consecutive image Transmission system host computer workflow schematic diagram of the invention based on ZigBee；
Fig. 5 is the wireless consecutive image Transmission system aggregation node workflow schematic diagram of the invention based on ZigBee；
Fig. 6 is the wireless consecutive image Transmission system imaging sensor node workflow schematic diagram of the invention based on ZigBee.
Embodiment
The present invention provides a kind of wireless consecutive image Transmission system based on ZigBee, to make the purpose of the present invention, technology
Scheme and effect are clearer, clear and definite, and the present invention is described in more detail for the embodiment that develops simultaneously referring to the drawings.It should manage
Solution, specific embodiment described herein only to explain the present invention, is not intended to limit the present invention.
As shown in Fig. 2 the wireless consecutive image Transmission system based on ZigBee that the present invention is provided, including：
Host computer subsystem：Preserved including host computer initialization of (a) serial ports, instruction transmission, data receiver and inspection and image.On
Position machine is connected with aggregation node by serial ports, by RS-232 serial ports to aggregation node transmission instruction, such as reset instruction, is set
Picture compression rate instruction of taking pictures is put, reads and claps image data instruction etc., the confirmation command from aggregation node is received and examine
Data and view data, and view data is preserved, mainly realize camera initialization and camera camera function.
Wireless communication module in aggregation node：Sent including aggregation node initialization, data receiver and data.Convergence section
Point initialization refers to protocol stack initialization and the initialization of radio communication peripheral circuit.Data receiver comes from including wireless receiving
The data that imaging sensor node is sent, and the instruction from host computer is received by serial ports.Data, which are sent, includes wireless transmission
Instruct and give imaging sensor multi-node wireless communication module, and host computer is sent data to by serial ports.
Wireless communication module in imaging sensor node subsystem：Including imaging sensor node initializing, data receiver
Sent with data.It is initial with wireless communication module peripheral circuit that imaging sensor node initializing refers to that protocol stack is initialized
Change；Data receiver includes the instruction that wireless receiving is sent from aggregation node, and receives the data from camera by serial ports；
Data transmission includes wireless transmission data and sends instructions to camera to aggregation node, and by serial ports.
Modules in consecutive image Transmission system need with other modules mutually coordinated, the systems soft ware work in sequential
Make schematic diagram as shown in Figure 3.
User can be sent instruction by host computer application software and go to control the serial port baud rate of camera, gather image
Size and compression ratio, the quantity continuously taken pictures etc., can be preserved with JPEG form in upper computer end and clap image.Host computer
Application software flow chart is as shown in Figure 4.
The whole intercommunication without consecutive image Transmission system, is all carried out according to frame structure.Host computer is to communication protocols
View is defined, and one has three kinds of frame structures：Command frame, acknowledgement frame and image data frame.
Acknowledgement frame represents the reply data that camera is returned after the camera instruction of host computer transmission is received.Host computer
Receive after acknowledgement frame, acknowledgement frame is tested, if correctly, continued executing with, if mistake, resend corresponding
Command frame.
Host computer application software is made up of two parts：Serial communication modular and image storage module.Serial communication modular bag
Initialization serial ports is included, the initialization of control camera and the command frame taken pictures are sent to aggregation node by RS-232 Serial Port Lines, together
When also to receive camera acknowledgement frame and image data frame from aggregation node.Image storage module is by image with JPEG texts
Part form is saved in disk file system.
Aggregation node in the entire system, plays the role of relay forwarding.Host computer is sent by RS-232 Serial Port Lines
The initialization of control camera and the command frame taken pictures are to aggregation node, and command frame is transmitted to image with not accepting or rejecting by aggregation node
Sensor node；Acknowledgement frame and image data frame that aggregation node reception imaging sensor node wireless is sent, and judgment frame
Type, if image data frame, then removes frame head, payload is forwarded into host computer by RS-232 Serial Port Lines, such as
Fruit is other kinds of data frame, then is forwarded directly to host computer.When receiving image data frame, aggregation node will also judge to connect
Whether the image data frame received is last frame.Aggregation node software flow pattern is as shown in Figure 5.
The concrete operations flow of imaging sensor node is as follows：Imaging sensor node power-up initializing, receives convergence section
The command frame of point wireless transmission, parses and peels off frame head part, camera is sent to by serial ports, to camera initialization and week
Carry out IMAQ to phase property.Wireless communication module reads the view data that camera is collected by serial ports, often from camera
100 bytes are received, an image data frame are just encapsulated as, frame head represents whether this image data frame is last frame.Figure
As the wireless communication module of sensor node has often encapsulated an image data frame, aggregation node is just wirelessly sent to immediately
Wireless communication module.The software flow pattern of imaging sensor node is as shown in Figure 6.
Be experimentally confirmed, the wireless consecutive image Transmission system based on ZigBee that provides of the present invention, can adapt to compared with
Long transmission range, is not easily susceptible to the influence of image pixel size, transmission range, and picture quality is higher, the frame per second of consecutive image
Also it is higher.
It is understood that for those of ordinary skills, can be with technique according to the invention scheme and its invention structure
Think of is subject to equivalent or change, and all these changes or replacement should all belong to the protection model of appended claims of the invention
Enclose.
Claims (6)
1. a kind of wireless consecutive image Transmission system based on ZigBee, it is characterised in that：The system includes host computer application
Subsystem, aggregation node subsystem, image sensor subsystem, the host computer subsystem are connected with aggregation node subsystem,
Aggregation node subsystem and image transducer subsystem wireless connection, the aggregation node subsystem and image transducer subsystem
Include wireless communication module, described image sensor subsystem also includes camera module, and the host computer subsystem is with converging
Connected between poly- node subsystem by serial ports.
2. the wireless consecutive image Transmission system as claimed in claim 1 based on ZigBee, it is characterised in that：The host computer
Subsystem realizes that host computer initialization of (a) serial ports, instruction transmission, data receiver and inspection and image are preserved, and host computer is saved with convergence
Point is connected by serial ports, is sent and instructed to aggregation node by RS-232 serial ports.
3. the wireless consecutive image Transmission system as claimed in claim 1 based on ZigBee, it is characterised in that：The convergence section
Point subsystem realizes that aggregation node initialization, data receiver and data are sent；Aggregation node initialization includes protocol stack initialization
With the initialization of wireless communication module peripheral circuit；Data receiver includes the number that wireless receiving is sent from imaging sensor node
According to, and pass through instruction of the serial ports reception from host computer；Data send include wireless transmission instruct to imaging sensor node without
Line communication module, and host computer is sent data to by serial ports.
4. the wireless consecutive image Transmission system as claimed in claim 1 based on ZigBee, it is characterised in that：Described image is passed
Sensor subsystem includes imaging sensor node initializing, data receiver and data and sent；Imaging sensor node initializing is
Refer to protocol stack initialization and the initialization of radio communication peripheral circuit；Data receiver includes wireless receiving and sent from aggregation node
Instruction, and pass through serial ports receive the data from camera；Data, which are sent, includes wireless transmission data to aggregation node, and logical
Cross serial ports and send instructions to camera.
5. the wireless consecutive image Transmission system based on ZigBee as described in one of claim 1-4, it is characterised in that：It is described
Host computer application subsystem includes serial communication modular and image storage module；
Serial communication modular includes initialization serial ports, and sending control camera to aggregation node by RS-232 Serial Port Lines initializes
With the command frame taken pictures, while also to receive camera acknowledgement frame and the image data frame from aggregation node；
Image is saved in disk file system by image storage module with JPEG file formats.
6. the wireless consecutive image Transmission system based on ZigBee as described in one of claim 1-4, it is characterised in that：It is described
Aggregation node realizes relay forwarding in aggregation node subsystem, and it is initial that host computer sends control camera by RS-232 Serial Port Lines
Change and the command frame taken pictures is to aggregation node, command frame is transmitted to imaging sensor node with not accepting or rejecting by aggregation node；Converge
Poly- node receives the acknowledgement frame and image data frame that imaging sensor node wireless is sent, and the type of judgment frame, if figure
As data frame, then frame head is removed, payload is forwarded to by host computer by RS-232 Serial Port Lines, if other kinds of
Data frame, then be forwarded directly to host computer；
When receiving image data frame, aggregation node will also judge whether the image data frame received is last frame.
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| CN201710176947.1A CN106961582A (en) | 2017-03-22 | 2017-03-22 | Wireless consecutive image Transmission system based on ZigBee |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710176947.1A CN106961582A (en) | 2017-03-22 | 2017-03-22 | Wireless consecutive image Transmission system based on ZigBee |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107509219A (en) * | 2017-08-28 | 2017-12-22 | 四川长虹电器股份有限公司 | It is a kind of based on the ZigBee data package parsing methods for reporting and submitting data characteristicses |
| CN107911657A (en) * | 2017-11-17 | 2018-04-13 | 苏州合利美电子科技有限公司 | A kind of cmos image remote monitoring system based on sensor network |
| CN108063913A (en) * | 2017-11-17 | 2018-05-22 | 苏州合利美电子科技有限公司 | A kind of remote monitoring system based on CMOS |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488105A (en) * | 2015-08-27 | 2017-03-08 | 江西恒盛晶微技术有限公司 | A kind of image transmitting instrument of NEXT series of products |
-
2017
- 2017-03-22 CN CN201710176947.1A patent/CN106961582A/en not_active Withdrawn
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488105A (en) * | 2015-08-27 | 2017-03-08 | 江西恒盛晶微技术有限公司 | A kind of image transmitting instrument of NEXT series of products |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107509219A (en) * | 2017-08-28 | 2017-12-22 | 四川长虹电器股份有限公司 | It is a kind of based on the ZigBee data package parsing methods for reporting and submitting data characteristicses |
| CN107911657A (en) * | 2017-11-17 | 2018-04-13 | 苏州合利美电子科技有限公司 | A kind of cmos image remote monitoring system based on sensor network |
| CN108063913A (en) * | 2017-11-17 | 2018-05-22 | 苏州合利美电子科技有限公司 | A kind of remote monitoring system based on CMOS |
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