CN201859215U - Video signal acquisition and process circuit generally used by wave measuring radar - Google Patents
Video signal acquisition and process circuit generally used by wave measuring radar Download PDFInfo
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- CN201859215U CN201859215U CN2010205644977U CN201020564497U CN201859215U CN 201859215 U CN201859215 U CN 201859215U CN 2010205644977 U CN2010205644977 U CN 2010205644977U CN 201020564497 U CN201020564497 U CN 201020564497U CN 201859215 U CN201859215 U CN 201859215U
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Abstract
The utility model discloses a video signal acquisition and process circuit generally used by a wave measuring radar, which comprises a signal converting module, an AD acquisition module, an FPGA module, a crystal oscillator, an interface converting module and a power supply module, the video signal sequentially passed through the signal converting module and the AD acquisition module and is accessed to the FPGA module, the FPGA module is connected with an interface device by the interface converting module, the crystal oscillator is connected with the AD acquisition module and the FPGA module which is accessed into a kilomega network, the power supply module is connected with the outer power supply so as to provide electricity for the modules. Interface matching and data acquisition can be carried out on various video signals provided by different navigation radar devices by the video signal acquisition and process circuit, so that the practicability of the devices are effectively improved, and the develop and maintenance cost for the wave measuring radar is lowered.
Description
Technical field
The utility model relates to a kind of signal acquisition circuit, relates in particular to a kind of wave observation radar universalization video signal collective treatment circuit, belongs to radar video signal and gathers the field.
Background technology
Wave observation radar be used for to ocean dynamical environments such as wave field around offshore or the marine ship air route and flow field, sea stablize, reliably, in real time, continuous monitoring, in regional marine monitoring technology with wave stream monitoring equipment complementations such as wave buoy, flow measurement instrument (current meter, acoustics ocean current profile instrument (ADCP)) and high-frequency ground wave radars.
In the our times scope, no matter be military wave observation radar or civilian wave observation radar, finalized the design wave observation radar or grinding wave observation radar, substantially all be the development platform by means of various X-band ship-navigation radars, by designing the video signal collection apparatus that is complementary with corresponding navar interface and characteristics of signals, gather offshore or marine ship sea echo data on every side, after carrying out certain digital signal processing, send the data to terminal computer by PCI or other interface and carry out echo demonstration and wave stream inversion procedure, finally form real-time sea environmental information product.
At present domestic simple at the most interface of video signal collective treatment facility that grinds wave observation radar, conversion of signals and Acquisition Circuit are all carried out specialized designs at employed fixedly model navar.Though this specific aim method for designing has simplicity of design, debugs advantage easily, can cause the signal collecting device versatility relatively poor, only can mate the interface and the semaphore request of same producer, same series navigation radar.
The utility model content
The utility model is at the problem of present wave observation radar video signal collection apparatus versatility difference, and proposes a kind of circuit that can carry out acquisition process to the various video signal that the different navigation radar is provided.
The structure of this circuit comprises signal conversion module, AD acquisition module, FPGA module, crystal oscillator, interface modular converter and power module, vision signal is successively by inserting the FPGA module behind signal conversion module, the AD acquisition module, the FPGA module is connected with interfacing equipment by interface modular converter, crystal oscillator connects AD acquisition module and FPGA module respectively, and power module connects external power source and gives above-mentioned all module for power supply respectively.
Described FPGA module connects the gigabit Ethernet network.
Preferably, described AD acquisition module adopts bipolarity AD acquisition chip AD9246.
The utility model can carry out Interface Matching and data acquisition to various video signals such as unidirectional video signal that the different navigation radar equipment provided, multipolarity vision signal, separating video signal, mixed video signals, the interface adaptive faculty of enhancing signal acquiring and processing device and signal compatibility ability, the practicality of effective raising equipment, the development and maintenance cost of reduction wave observation radar.
Description of drawings
Fig. 1 is a circuit module structural representation of the present utility model.
Embodiment
The modular structure of the utility model wave observation radar universalization video signal collective treatment circuit as shown in Figure 1, comprise signal conversion module, AD acquisition module, FPGA module, crystal oscillator, interface modular converter and power module, vision signal is successively by inserting the FPGA module behind signal conversion module, the AD acquisition module, the FPGA module is connected with interfacing equipment by interface modular converter, crystal oscillator connects AD acquisition module and FPGA module respectively, and power module connects external power source and gives above-mentioned all module for power supply respectively.
For realizing technical purpose of the present utility model, need to select the appropriate signal sample frequency.The assembling of carrying wave observation radar because of warship (ship) needs, the navar of its use has nothing in common with each other, the designed minimum fire pulse width of different navars is not quite similar, sample frequency to video signal collection apparatus has different minimum requirements, therefore for adapting to the universalization requirement of collecting device, clock of the present utility model adopts the XOSM-572 of Vishay company, and output frequency is 100MHz.Because of the characteristic of different navar vision signals there are differences, positive video signal is arranged, negative video signal is arranged, the positive negative bipolar vision signal is arranged, the separating video signal is arranged, mixed video signal is also arranged, therefore need to select bipolarity AD chip, consider the requirement of wave observation radar to the data precision simultaneously, the AD acquisition module adopts the AD9246 (14, peak-to-peak value 2V) of AD company in the utility model.Handle and video Data Transmission for realizing radar video signal, need analysis-by-synthesis signal Processing scale, the computational data delivery flow rate, the FPGA module adopts the VIRTEX-5XC5VLX30T FFG665 (available resources: 8 RocketIO, 19200 logical blocks, 32 multipliers, 4 ethernet macs, 160 single-ended or 80 couples of difference IO etc.) of XILINX company in the utility model, can realize that signal processing function can satisfy the data transmission requirement again, the FPGA module inserts the gigabit Ethernet network simultaneously.Because the signal amplitude of different navigation radar is not quite similar, interface shape also has nothing in common with each other, and the unnecessary IO pin that therefore need make full use of FPGA designs the match circuit of multiple signaling interface form.
Several critical design element during this programme is implemented are as follows:
1. with digital storage oscilloscope the vision signal of common navar is tested or vision signal is analyzed according to the Radar Technology handbook.
2. according to the stake resistance requirement of radar video signal, reserve the vision signal stake resistance, vision signal is carried out the amplitude adjustment, send into bipolarity AD chip again by discharge circuit.
3. write VHDL language and realize acquisition controlling and the storage of FPGA the data of AD; The different signal procedure of communication format design at different radars; Design the video decode program of different modes at the mixed video signal of different-format; Design gigabit Ethernet DCP realizes the exchanges data with PC.
Be part of V HDL program below:
M_emac:MyEMAC--kilomega network mapping
port?map(
GMII_CLK125＝＞GMII_CLK125，
GMII_RX_CLK_0＝＞GMII_RX_CLK_0，
clk＝＞clk_xtal，
rx_data0 ＝＞rx_data0，
rx_data1 ＝＞rx_data1，
rx_data10 ＝＞rx_data10，
tx_data(7?downto?0) ＝＞tx_data(15?downto?8)，
tx_data(15?downto?8) ＝＞tx_data(7?downto?0)，
tx_data_en＝＞tx_data_en，
tx_fifo_full＝＞tx_fifo_full
)；
Fangwei:Radar Ant--orientation decoding 1
port?map(
clk＝＞clk_40M，
HD＝＞FW_hd，
BP＝＞FW_br，
Radat_Ant_en＝＞Radat_Ant_en，
count_num＝＞count_num，
total_num＝＞total_num，
FW_OUT＝＞FW_OUT_DATA
)；
Fw_receive:uart_rx--orientation decoding 2
port?map(
clk＝＞clk_xtal，
serial_in＝＞fw_serial_in，
en_16x_baud＝＞baud_16x_38400，
dout＝＞received_data_fw，
data_present＝＞data_valid_fw
)；
Ad_data_save:ad_ram--AD storage
port?map(
addra＝＞ram_addra，
addrb＝＞ram_addrb，
clka＝＞clk_40M，
clkb＝＞clk_xtal，
dina＝＞ad_to_ram_r，--ad_in_i，2?chou?qu
doutb＝＞ram_doutb，
wea＝＞ram_wea
)；
Fir:ad_fir--FIR filtering
port?map(
RFD＝＞open，
RDY＝＞open，
CLK＝＞clk_xtal，
DOUT＝＞ad_data_in，
DIN＝＞ad_data_in_s
)；
Process1:ad process1--video decode 1
portmap(
clk＝＞clk_xtal，
mode＝＞mode_sel，
ad_in＝＞signal_in，
fw_out＝＞received_fw，
trig_out＝＞received_trig，
data＝＞received_data
)；
Process1:ad_process2--video decode 2
port?map(
clk＝＞clk_xtal,
mode＝＞mode_sel,
ad_in＝＞ad_data_in，
fw_out＝＞fw_resut，
trig_out＝＞trig_resut，
data＝＞ad_data_vedio
)；
Claims (4)
1. wave observation radar universalization video signal collective treatment circuit, it is characterized in that: comprise signal conversion module, AD acquisition module, FPGA module, interface modular converter and power module, vision signal is successively by inserting the FPGA module behind signal conversion module, the AD acquisition module, the FPGA module is connected with interfacing equipment by interface modular converter, and power module connects external power source and gives signal conversion module, AD acquisition module, FPGA module and interface modular converter power supply respectively.
2. wave observation radar universalization video signal collective treatment circuit according to claim 1 is characterized in that: also comprise crystal oscillator, crystal oscillator is connected with the FPGA module with the AD acquisition module respectively.
3. wave observation radar universalization video signal collective treatment circuit according to claim 1 is characterized in that: described AD acquisition module adopts bipolarity AD acquisition chip AD9246.
4. wave observation radar universalization video signal collective treatment circuit according to claim 1 is characterized in that: described FPGA module connects gigabit Ethernet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205644977U CN201859215U (en) | 2010-10-18 | 2010-10-18 | Video signal acquisition and process circuit generally used by wave measuring radar |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205644977U CN201859215U (en) | 2010-10-18 | 2010-10-18 | Video signal acquisition and process circuit generally used by wave measuring radar |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859215U true CN201859215U (en) | 2011-06-08 |
Family
ID=44105019
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205644977U Expired - Lifetime CN201859215U (en) | 2010-10-18 | 2010-10-18 | Video signal acquisition and process circuit generally used by wave measuring radar |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859215U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012500A (en) * | 2010-10-18 | 2011-04-13 | 南京鹏力科技有限公司 | Wave-measuring radar universal video signal acquisition processing circuit |
| CN107132517A (en) * | 2017-05-31 | 2017-09-05 | 安徽四创电子股份有限公司 | The general Weather Channel signal processing apparatus of low-altitude surveillance radar and its processing method |
-
2010
- 2010-10-18 CN CN2010205644977U patent/CN201859215U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102012500A (en) * | 2010-10-18 | 2011-04-13 | 南京鹏力科技有限公司 | Wave-measuring radar universal video signal acquisition processing circuit |
| CN107132517A (en) * | 2017-05-31 | 2017-09-05 | 安徽四创电子股份有限公司 | The general Weather Channel signal processing apparatus of low-altitude surveillance radar and its processing method |
| CN107132517B (en) * | 2017-05-31 | 2023-05-02 | 安徽四创电子股份有限公司 | Low-altitude monitoring radar universal weather channel signal processing device and processing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: CSIC PENGLI (NANJING) ATMOSPHERIC AND OCEANIC INFO Free format text: FORMER OWNER: NANJING PRIDE TECHNOLOGY CO., LTD. Effective date: 20120810 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120810 Address after: 211106 Jiangning Province Economic and Technological Development Zone, Jiangsu City, No. Sheng Tai Road, No. 68 Patentee after: China National Offshore Heavy Industries (Nanjing) Co., Ltd. Address before: Shuige Development Zone Jiangning road Nanjing city Jiangsu province 211106 Evergreen Street Patentee before: Nanjing Pride Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110608 |