A kind of remote image Transmission system
Technical field
This utility model is related to field of image transmission, more particularly to a kind of remote image Transmission system.
Background technology
Wireless Image Transmission Systems not only militarily have important purposes, and support, rob in safety monitoring, medical treatment
The civilian basin such as the dangerous disaster relief suffers from being widely applied.At present, high-definition camera and high bandwidth wireless transmission equipment with credit union
It is increasingly becoming the trend of image transmitting.Although wireless network (Wireless Fidelity, WiFi) is based on 802.22b standards, most
Big advantage is that transmission speed is higher, can reach 11Mbps, and effective propagation path is shorter, therefore, the image based on WiFi is passed
The transmission range of defeated system is still limited, and the required distance of image transmitting can not be met in many application scenarios.
The content of the invention
In view of this, the purpose of this utility model is to propose a kind of remote image Transmission system, can not to solve image
The problem of enough long-distance transmissions.
For achieving the above object, this utility model is adopted the following technical scheme that:
This utility model embodiment provides a kind of remote image Transmission system, including:Image information collecting module, company
It is connected to the image information sending module of image information collecting module, and the image information being wirelessly connected with image information sending module
Receiver module, wherein,
Described image information sending module is specifically included:First data converter, the first match circuit, the second matching electricity
Road, first send amplifier, the 3rd match circuit, the first reception amplifier, first switch and first antenna, wherein:
First data converter, be connected with described image information acquisition module, for by composition image and video
Digital signal is converted into radiofrequency signal;
First match circuit, be connected to first data converter and first send amplifier input it
Between, the impedance of the input resistance that the output resistance and described first for realizing first data converter sends amplifier turns
Change, and strengthen the signal intensity of the radiofrequency signal;
The first transmission amplifier is used to strengthen the output of the radiofrequency signal, and its outfan is by the 3rd matching
Circuit is connected with the first switch for control signal transmission, and the 3rd match circuit is used for matching first and sends amplifier
Output impedance, and strengthen the signal intensity of the radiofrequency signal;
The first switch is also connected with the first data converter, for receiving from the first data converter with regard to digital-to-analogue
The control signal of signal transmission, for controlling the opening and closing of first switch;
The first antenna is connected with first switch, for when first switch is opened wirelessly by the radio frequency believe
Number send to image information receiver module, or receive external control signal;
The input of first reception amplifier is connected with first switch, and outfan passes through the second match circuit and first
Data converter connects, for improving gain, and noise-reduction coefficient for the external control signal for receiving;
Second match circuit, for realizing that the output resistance and first data of first reception amplifier turn
The impedance transformation of the input resistance of parallel operation, and strengthen the signal intensity of the external control signal for receiving;
Described image information receiving module is specifically included:Second data converter, the 4th match circuit, the 5th matching electricity
Road, second send amplifier, the 6th match circuit, the second reception amplifier, second switch and the second antenna, wherein:
Second antenna is connected with second switch, for wirelessly receiving from described when second switch is opened
The radiofrequency signal that image information sending module sends;
The input of second reception amplifier is connected with second switch, and outfan passes through the 5th match circuit and second
Data converter connects, for improving gain, and noise-reduction coefficient for the radiofrequency signal for receiving;
5th match circuit, for realizing that the output resistance and second data of second reception amplifier turn
The impedance transformation of the input resistance of parallel operation, and strengthen the signal intensity of the radiofrequency signal for receiving;
Second data converter, is connected with the 5th match circuit and the 4th match circuit, for by institute
State radiofrequency signal and be converted into digital signal;
4th match circuit, be connected to second data converter and second send amplifier input it
Between, for realizing that the second data converter output resistance and described second sends the impedance transformation of amplifier input resistance,
And strengthen the signal intensity of the digital signal;
The second transmission amplifier is used to strengthen the output of the digital signal, and its outfan is by the 6th matching
Circuit is connected with second switch;
6th match circuit is used for matching second and sends the output impedance of amplifier, and strengthens the digital signal
Signal intensity;
The second switch is additionally operable to receive the control signal transmitted with regard to digital and analogue signals from the second data converter, uses
In being turned on and off for control second switch;
Second antenna is additionally operable to send the digital signal when second switch is opened.
Further, first match circuit is specifically included:It is first inductance, the second inductance, the 3rd inductance, the 4th electric
Sense, the first electric capacity, the second electric capacity, the 3rd electric capacity, the 4th electric capacity and the 5th electric capacity, wherein:
The first end of the first data-interface of first data converter and first inductance, first electric capacity
The first end connection of first end and second electric capacity;Second data-interface of first data converter is electric with described second
The first end connection of the first end of sense, the second end of second electric capacity and the 3rd electric capacity;The second of first inductance
Second end of end and second inductance is connected with power supply;The first end of the second end of first electric capacity and the 4th electric capacity and the
The first end connection of four inductance;Second end of the 3rd electric capacity and the first end of the 3rd inductance and five electric capacity described in
First end connects;Second end of the 3rd inductance is connected and is grounded with the second end of the 4th electric capacity;4th inductance
The second end and the 5th electric capacity the second end connection, and with first transmission the data-interface of amplifier first be connected.
4th match circuit is identical with the first match circuit structure.
Further, the 3rd match circuit is specifically included:It is first resistor, the 5th inductance, the 6th electric capacity, the 7th electric
Appearance, the 8th electric capacity, the 9th electric capacity, the tenth electric capacity, the 11st electric capacity, the 12nd electric capacity and the 13rd electric capacity, wherein:
Second data-interface of the first transmission amplifier is connected and is grounded with the first end of the 6th electric capacity;It is described
It is first the 3rd data-interface and the second end of the 6th electric capacity for sending amplifier, the first end of the 7th electric capacity, described
The first end connection of the first end of first resistor and the 8th electric capacity;The second end ground connection of the 7th electric capacity;Described first
The first end of the second end of resistance and the 9th electric capacity, the first end of the 11st electric capacity, the of the 13rd electric capacity
One end and power supply connect;Second end of the 9th electric capacity, the second end of the 11st electric capacity, the of the 13rd electric capacity
Two ends are grounded respectively;Second end of the 8th electric capacity and the first end of the tenth electric capacity and the first end of the 5th inductance
Connection;The second end ground connection of the tenth electric capacity;Second end of the 5th inductance and the first end of the 12nd electric capacity point
It is not connected with the first switch;The second end ground connection of the 12nd electric capacity.
6th match circuit is identical with the 3rd match circuit structure.
Further, second match circuit is specifically included:6th inductance, the 7th inductance, the 14th electric capacity, the 15th
Electric capacity, the 16th electric capacity, the 17th electric capacity and the 18th electric capacity, wherein:
3rd data-interface of first data converter and the first end of the 6th inductance and the 14th electric capacity
First end connects;4th data-interface of first data converter and second end and the described 15th of the 6th inductance
The first end connection of electric capacity;Second end of the 14th electric capacity and the first end and the 17th electric capacity of the 7th inductance
First end connection;Second end of the 15th electric capacity and the first end of the 16th electric capacity and the 18th electric capacity
First end connects;Second end of the 16th electric capacity is connected and is grounded with the second end of the 7th inductance;Described 17th
The second end connection of the second end of electric capacity and the 18th electric capacity, and connect with the data-interface of the first reception amplifier first
Connect.
5th match circuit is identical with the second match circuit structure.
Further, the first antenna and second antenna are ceramic antenna, for the penetration capacity of enhancing signal.
Especially, in described image information sending module, first data converter corresponds to the following circuit of least one set:
First match circuit, the second match circuit, first send amplifier, the 3rd match circuit, the first reception amplifier, first switch
And first antenna;Or
In described image information sending module, second data converter corresponds to the following circuit of least one set:4th
Amplifier, the 6th match circuit, the second reception amplifier, second switch and second are sent with circuit, the 5th match circuit, second
Antenna.
Further, the system also includes:
Mobile terminal, is connected with described image information receiving module by the second antenna wireless, for receiving described image
The image information that information receiving module sends.
The beneficial effects of the utility model are:A kind of remote image Transmission system that this utility model is provided, by choosing
Suitable data converter, signal amplifier and antenna are selected, and the working condition of each device is adjusted using match circuit, realized
The remote high-speed transfer of image, improves the distance of image transmitting.
Description of the drawings
Below exemplary embodiment of the present utility model will be described in detail by referring to accompanying drawing, make the ordinary skill of this area
Personnel become apparent from above-mentioned and other feature and advantage of the present utility model, in accompanying drawing:
Fig. 1 is a kind of structured flowchart of remote image Transmission system that this utility model embodiment one is provided;
Fig. 2 is the electrical block diagram of the image information sending module that this utility model embodiment two is provided.
Specific embodiment
Further illustrate the technical solution of the utility model below in conjunction with the accompanying drawings and by specific embodiment.Can manage
Solution, specific embodiment described herein is used only for explanation this utility model, rather than to restriction of the present utility model.Separately
It is outer also, it should be noted that for the ease of description, illustrate only the part related to this utility model in accompanying drawing and not all knot
Structure.
Embodiment one
Fig. 1 is a kind of structured flowchart of remote image Transmission system that this utility model embodiment one is provided.Such as Fig. 1 institutes
Show, the system includes:Image information collecting module 110, image information sending module 120 and image information receiver module 130, figure
As information acquisition module 110, for gathering image information waiting for transmission;Image information sending module 120, with image information collecting
Module 110 is connected, for image information to be sent to into image information receiver module 130;Image information receiver module 130, with figure
As information sending module 120, wirelessly connection is connected, for receiving the image information of the transmission of image information sending module 120;Wherein:
Image information sending module 120 is specifically included:First data converter 121, the first match circuit 122, first
Send amplifier 123, the 3rd match circuit 124, the second match circuit 125, the first reception amplifier 126, first switch 127 and
One antenna 128;Image information receiver module 130 is specifically included:Second data converter 131, the 4th match circuit 132, second
Send amplifier 133, the 6th match circuit 134, the 5th match circuit 135, the second reception amplifier 136, the and of second switch 137
Second antenna 138, wherein:
First data converter 121, is connected with image information collecting module 110, for the number by image and video is constituted
Word signal is converted into radiofrequency signal;First match circuit 122, is connected to the first data converter 121 and first and sends amplifier
Between 123 input, the output resistance and first for realizing the first data converter 121 sends the input of amplifier 123
The impedance transformation of resistance, and strengthen the signal intensity of the radiofrequency signal;First transmission amplifier 123 is used to strengthen the radio frequency
The output of signal, its outfan is connected by the 3rd match circuit 124 with the first switch 127 for control signal transmission
Connect, the 3rd match circuit 124 is used for matching first and sends the output impedance of amplifier 123, and strengthens the letter of the radiofrequency signal
Number intensity;First switch 127 is also connected with the first data converter 121, for receive from the first data converter 121 with regard to
The control signal of digital and analogue signals transmission, for controlling the opening and closing of first switch;First antenna 128 and first switch 127
Connection, for wirelessly the radiofrequency signal being sent to image information receiver module when first switch 127 is opened
130, or receive external control signal;The input of the first reception amplifier 123 is connected with first switch 127, and outfan leads to
Cross the second match circuit 125 to be connected with the first data converter 121, for improving gain for the external control signal for receiving,
And noise-reduction coefficient;Second match circuit 125, for realizing the output resistance and the first data of the first reception amplifier 126
The impedance transformation of the input resistance of transducer 121, and strengthen the signal intensity of the external control signal for receiving.
Image information receiver module 130 is specifically included:Second data converter 131, the 4th match circuit 132, the 5th
Amplifier 133, the 6th match circuit 134, the second reception amplifier 136, second switch 137 and the are sent with circuit 135, second
Two antennas 138, wherein:
Second antenna 138 is connected with second switch 137, comes for wirelessly receiving when second switch 137 is opened
From the radiofrequency signal that image information sending module 120 sends;The input of the second reception amplifier 136 connects with second switch 137
Connect, outfan is connected by the 5th match circuit 135 with the second data converter 131, for carrying for the radiofrequency signal for receiving
High-gain, and noise-reduction coefficient;5th match circuit 135, for realizing the output resistance and of the second reception amplifier 136
The impedance transformation of the input resistance of two data converters 131, and strengthen the signal intensity of the radiofrequency signal for receiving;Second data
Transducer 131, is connected with the 5th match circuit 135 and the 4th match circuit 132, for radiofrequency signal to be converted into into digital letter
Number;4th match circuit 132, is connected to the second data converter 131 and second and sends between the input of amplifier 133, uses
In realizing that the output resistance of the second data converter 131 and second sends the impedance transformation of the input resistance of amplifier 133, and strengthen number
The signal intensity of word signal;Second transmission amplifier 133 is used to strengthen the output of digital signal, and its outfan passes through the 6th
Match circuit 134 is connected with second switch 137;6th match circuit 134 is used for the output resistance that matching second sends amplifier 133
It is anti-, and strengthen the signal intensity of digital signal;Second switch 137 is additionally operable to receive from the second data converter 131 with regard to number
The control signal of mould signal transmission, for controlling being turned on and off for second switch 137;Second antenna is additionally operable in second switch
137 send digital signal when opening.
Further, remote image Transmission system also includes mobile terminal, with image information receiver module 130 by the
The wireless connection of two antenna 138, for receiving the image information of the transmission of image information receiver module 130.
Image information collecting module 110 using the electronic equipment such as photographic head, video camera or image pick-up card obtain image and
Video information, the first data converter image and video information of acquisition being sent in image information sending module 120
121, the digital signal for constituting image and video is converted to radiofrequency signal by the first data converter 121, by the first matching electricity
The radiofrequency signal is sent to the first transmission amplifier 123 by road 122, and first sends amplifier 123 strengthens the radiofrequency signal of transmission
Signal intensity and output, by improve information quality, improve radio signal transmission distance, afterwards the first data turn
The control of parallel operation 121 first switch 127 is opened, then finally reaches first antenna 128 through first switch 127, and radiofrequency signal is sent out
The second antenna 138 being sent in image information receiver module 130;The second antenna 138 in image information receiver module 130 is received
To the radiofrequency signal that first antenna 128 sends, the control second switch 127 of the second data converter 131 is opened, through second switch
137 reach the second reception amplifier 136, and the second reception amplifier 136 is by improving the gain of radiofrequency signal and reducing radio frequency letter
Number noise coefficient improving the quality of radiofrequency signal, eventually pass the 5th match circuit 135 and reach the second data converter
131 carry out signal conversion, obtain image and video information.
Also, it should be noted that processor is the control centre of whole image Transmission system, the work of whole system is controlled
State, during image transmitting, processor can be to image information collecting module 110, image information sending module 120
Send control instruction.
In a kind of specific embodiment, the remote image Transmission system of the application can apply to unmanned plane shooting
Scene, there is image information collecting module 110 and image information sending module 120 on unmanned plane, additionally, control unmanned plane
Handheld device there is the processor and image information receiver module 130, during operation, can be sent to unmanned plane by handheld device
The control instruction of shooting.Specifically, control instruction, the figure in unmanned plane are sent to unmanned plane by the processor in handheld device
As information sending module 120 receives the control instruction by first antenna 128, via first switch 127, the first reception amplifier
126th, the second match circuit 125, the first data converter 121 reach image information collecting module 110, for controlling image information
Acquisition module 110 carries out image acquisition, then controls the first data converter 121 and the image information for collecting is converted into into radio frequency
Signal, via the first transmission amplifier 123 radiofrequency signal amplification is carried out, while the control first switch of the first data converter 121
127 open, then are sent to image information receiver module 130 by first antenna 128, by image information receiver module 130
Second antenna 138 receives the radiofrequency signal, and controls second switch 137 by the second data converter 131 and open, and connects via second
Receiving amplifier 136 carries out radiofrequency signal amplification, then controls the second data converter 131 radiofrequency signal is converted to into digital signal,
Send amplifier 133, the 6th match circuit 134, the antenna of second switch 137 and second via the 4th match circuit 132, second again
138 send to mobile terminal.In the present embodiment, because above-mentioned match circuit can strengthen the letter of transmitted picture signal
Number intensity, above-mentioned amplifier can improve gain, and noise-reduction coefficient for the picture signal transmitted, it is thereby achieved that figure
As the long-distance transmissions of signal.
Especially, the present embodiment provide remote image Transmission system can independently of video processing procedure and equipment,
Can be additionally used in long-distance transmissions other non-image and video information digital signals.
Preferably, the data converter that the first data converter 121 and the second data converter 131 can be selected can be
The AR9342 of high pass, the chip supports the double MIMO for receiving double 2 × 2 of 2.4G.Maximum supports that the theoretical transmission rate of 300M ensures
Enough bandwidth are supported.
Preferably, the first transmission amplifier 123 and second sends amplifier 133 and can select the SE2576 of skywork, protects
Enough outputs and good signal quality are demonstrate,proved.
Preferably, the first reception amplifier 126 and the second reception amplifier 136 can select the SKY65971 of skywork,
There is provided higher gain and relatively low noise coefficient, make system sensitivity more preferable.
Preferably, first switch 127 and second switch 137 can select the SKY13370 of skywork, there is provided relatively low
Loss and enough isolation, it is ensured that the normal operation of system transmitting-receiving.
Preferably, the antenna 138 of first antenna 128 and second employs the ceramic antenna that distinctive ceramics make, can be with
Targetedly debugged in image information sending module 120 and image information receiver module 130, allow signal to have higher to air
Penetration power.
A kind of remote image Transmission system that the present embodiment is provided, including image information collecting module, image information
Module and image information receiver module are sent, the through-put power of the signal of transmission is strengthened by image information sending module, by figure
As information receiving module provides higher gain and relatively low noise coefficient for the signal for receiving, so as to obtain long-distance transmissions mistake
The clearly image for coming and video information, improve the distance of image transmitting.
Embodiment two
Fig. 2 is the electrical block diagram of the image information sending module that this utility model embodiment two is provided.This enforcement
Example is on the basis of above-described embodiment, to image information sending module specific description have been carried out, as shown in Fig. 2 image letter
Breath sending module 120 is specifically included:First data converter 121, the first match circuit 122, first send amplifier 123, the
Three match circuits 124, the second match circuit 125, the first reception amplifier 126, first switch 127 and first antenna 128, its
In:
First match circuit 122 is specifically included:First inductance L1, the second inductance L2, the 3rd inductance L3, the 4th inductance L4,
First electric capacity C1, the second electric capacity C2, the 3rd electric capacity C3, the 4th electric capacity C4 and the 5th electric capacity C5, wherein:First data converter U1
The first data-interface and the first inductance L1 first end, the first end of the first electric capacity C1 and the second electric capacity C2 first end connect
Connect;The first end of second data-interface of the first data converter U1 and the second inductance L2, second end of the second electric capacity C2 and
The first end connection of three electric capacity C3;Second end of second end of the first inductance L1 and the second inductance L2 is connected with power supply VCC;First
Second end of electric capacity C1 is connected with the first end of the 4th electric capacity C4 and the first end of the 4th inductance L4;Second end of the 3rd electric capacity C3
It is connected with the first end of the 3rd inductance L3 and the first end of the 5th electric capacity C5;Second end of the 3rd inductance L3 is with the 4th electric capacity C4's
Second end connects and is grounded;Second end of the 4th inductance L4 and the second end connection of the 5th electric capacity C5, and send amplification with first
The data-interfaces of device U2 first connect.
3rd match circuit 124 is specifically included:First resistor R1, the 5th inductance L5, the 6th electric capacity C6, the 7th electric capacity C7,
8th electric capacity C8, the 9th electric capacity C9, the tenth electric capacity C10, the 11st electric capacity C11, the 12nd electric capacity C12 and the 13rd electric capacity C13,
Wherein:Second data-interface of the first transmission amplifier U2 is connected and is grounded with the first end of the 6th electric capacity C6;First transmission is put
3rd data-interface of big device U2 and second end of the 6th electric capacity C6, the first end of the 7th electric capacity C7, the first of first resistor R1
The first end of end and the 8th electric capacity C8 connects;The second end ground connection of the 7th electric capacity C7;Second end of first resistor R1 is electric with the 9th
Hold first end, the first end of the 11st electric capacity C11, the first end of the 13rd electric capacity C13 and the power supply VCC connections of C9;9th is electric
Second end of appearance C9, second end of the 11st electric capacity C11, second end of the 13rd electric capacity C13 are grounded respectively;8th electric capacity C8's
Second end is connected with the first end of the tenth electric capacity C10 and the first end of the 5th inductance L5;The second end ground connection of the tenth electric capacity C10;
Second end of the 5th inductance C5 and the first end of the 12nd electric capacity C12 are connected respectively with first switch K1;12nd electric capacity C12's
Second end is grounded.
Second match circuit 125 is specifically included:It is 6th inductance L6, the 7th inductance L7, the 14th electric capacity C14, the 15th electric
Hold C15, the 16th electric capacity C16, the 17th electric capacity C17 and the 18th electric capacity C18, wherein:The 3rd of first data converter U1
Data-interface is connected with the first end of the 6th inductance L6 and the first end of the 14th electric capacity C14;The of first data converter U1
Four data-interfaces are connected with second end of the 6th inductance L6 and the first end of the 15th electric capacity C15;The second of 14th electric capacity C14
End is connected with the first end of the 7th inductance L7 and the first end of the 17th electric capacity C17;Second end and the tenth of the 15th electric capacity C15
The first end of six electric capacity C16 and the first end connection of the 18th electric capacity C18;Second end of the 16th electric capacity C16 and the 7th inductance
Second end of L7 connects and is grounded;The second end connection of second end of the 17th electric capacity C17 and the 18th electric capacity C18, and with the
One the first data-interfaces of reception amplifier U3 connect.
Especially, in image information sending module 120, a correspondence least one set of the first data converter 121 is electric as follows
Road:First match circuit 122, first sends amplifier 123, the 3rd match circuit 124, the second match circuit 125, first and receives
Amplifier 126, first switch 127 and first antenna 128;In fig. 2 only by taking one of which as an example, illustrate that image information sends mould
The circuit structure block diagram of block 120.
In the present embodiment, image information sending module 120 is specifically described and is illustrated, the first match circuit
122, the output resistance and first of realizing the first data converter 121 send the impedance transformation of the input resistance of amplifier 123, real
Existing first data converter 121 and first sends the matching connection of amplifier 123, adjusts the first data converter 121 and first
The working condition of amplifier 123 is sent, makes radiofrequency signal that preferable performance is reached in transmitting procedure, reduce radiofrequency signal in electricity
Loss in the transmitting procedure of road, it is ensured that the output intensity of radiofrequency signal;3rd match circuit 124, adjusts first and sends amplifier
123 output impedance, reduces loss of the radiofrequency signal during circuit transmission;Second match circuit 125, adjusts first and counts
According to transducer 121 input resistance and second send amplifier 133 output resistance impedance transformation, for receive signal provide compared with
High gain, and reduce receiving the noise coefficient of signal, improve signal quality.By the design to match circuit and components and parts
Select, improve the distance of image transmitting.
First match circuit 122, the 3rd match circuit 124 and the second match circuit 125 be according to long-distance transmissions demand,
The result that test of many times debugs out.The present embodiment only gives a kind of possible matching scheme, for partial ohmic, inductance and
The position of electric capacity is exchanged, while changing the function that corresponding parameter is still capable of achieving this circuit, varying circuit here does not do superfluous
State.Every circuit with same principle and analogous circuit structure is drawn on the basis of the present embodiment, with the present embodiment
Belong to same design.
Image information receiver module 130 is identical with the structure of image information sending module 120, and function is close, and here is no longer multiple
State.
Note, above are only preferred embodiment of the present utility model and institute's application technology principle.Those skilled in the art's meeting
Understand, this utility model is not limited to specific embodiment described here, can carry out for a person skilled in the art various bright
Aobvious change, readjust and substitute without departing from protection domain of the present utility model.Therefore, although by above example
This utility model is described in further detail, but this utility model is not limited only to above example, without departing from
In the case that this utility model is conceived, more other Equivalent embodiments can also be included, and scope of the present utility model is by appended
Right determine.