Radar signal switching routing system based on FPGA and multichannel optical fiber transmission

Abstract

The utility model relates to a radar signal switching routing system based on FPGA and multichannel optical fiber transmission, belongs to the technical field of radars, and solves the problem of low signal transmission efficiency in the prior art. The system comprises an FPGA (Field Programmable Gate Array), a plurality of optical fiber switching modules, a power supply module and a clock module, each optical fiber switching module comprises a multi-path parallel optical transceiver module and a one-to-many optical fiber switching cable; the multi-path parallel optical transceiver module is connected with the FPGA through a GTH interface; the multi-path parallel optical transceiver module is connected with terminal equipment through a one-to-many optical fiber switching cable; the power module comprises a first power circuit and a second power circuit; the input end of the first power circuit is connected with power supply equipment, and the output end is connected with the power input ends of the plurality of optical fiber conversion modules; the input end of the second power supply circuit is connected with the power supply equipment, and the output end is connected with the power supply input end connection module of the FPGA; and the clock module is connected with the FPGA and the clock signal input end of the multi-path parallel optical transceiver module. And efficient radar signal transmission is realized.

Description

Technical Field

[0001] This utility model relates to the field of radar technology, and in particular to a radar signal switching and routing system based on FPGA and multi-channel optical fiber transmission. Background Technology

[0002] Radar signal processors require adjustments to the algorithms and data streams of each computing module to suit different combat scenarios and technical specifications. In modern radar systems, with ever-increasing demands for target detection accuracy, range, and multi-functionality, the volume and rate of radar signal transmission face significant challenges. Traditional point-to-point signal transmission methods are insufficient to meet the demands for rapid and reliable transmission of large amounts of data. Utility Model Content

[0003] Based on the above analysis, this utility model aims to provide a radar signal switching and routing system based on FPGA and multi-channel optical fiber transmission to solve the problem of low efficiency in existing signal switching systems.

[0004] The objective of this utility model is mainly achieved through the following technical solutions:

[0005] A radar signal switching and routing system based on FPGA and multi-channel optical fiber transmission includes an FPGA, multiple optical fiber adapter modules, a power supply module, and a clock module.

[0006] Each fiber optic adapter module includes a multi-channel parallel optical transceiver module and a one-to-many fiber optic adapter cable.

[0007] The multi-channel parallel optical transceiver module is connected to the FPGA via a GTH interface;

[0008] The multi-channel parallel optical transceiver module is connected to the terminal equipment via a one-to-many fiber optic adapter cable.

[0009] The power module includes a first power circuit and a second power circuit.

[0010] The input terminal of the first power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal of multiple fiber optic conversion modules.

[0011] The input terminal of the second power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal module of the FPGA.

[0012] The clock module is connected to the clock signal input terminals of the FPGA and the multi-channel parallel optical transceiver module.

[0013] Furthermore, the first power supply circuit includes a first power input channel, a second power input channel, a third power input channel, and a fourth power input channel;

[0014] Each power input channel's voltage input pin is connected to a 12V power supply device; each power input channel's voltage input pin is grounded through a first circuit; the first circuit includes four parallel filter capacitors;

[0015] The voltage input pin of each power input channel is grounded through two pull-down resistors connected in series.

[0016] Furthermore, each power input channel includes an operation control input pin, and each operation control input pin is grounded via a pull-down resistor.

[0017] Furthermore, the first power supply circuit includes a first power output channel;

[0018] The first power output channel includes multiple first power output pins; the multiple first power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module through two parallel resistors;

[0019] The plurality of first power output pins are also grounded via a second circuit;

[0020] The second circuit includes two capacitors and one resistor connected in parallel.

[0021] Furthermore, the first power supply circuit also includes a second power output channel;

[0022] The second power output channel includes multiple second power output pins; the multiple second power output pins are uniformly connected to the multiple first power output pins of the first power output channel.

[0023] Furthermore, the first power supply circuit also includes a third power output channel;

[0024] The third power output channel includes multiple third power output pins; the multiple third power output pins are connected to the 1.5V digital power input terminal of the fiber optic conversion module through resistors;

[0025] The plurality of third power output pins are also grounded via a third circuit; the third circuit includes a capacitor and a resistor connected in parallel.

[0026] Furthermore, the first power supply circuit also includes a fourth power output channel;

[0027] The fourth power output channel includes multiple fourth power output pins; the multiple fourth power output pins are connected to the 3.3V digital power input terminal of the fiber optic conversion module through resistors;

[0028] The plurality of fourth power output pins are also grounded via a fourth circuit; the fourth circuit includes a capacitor and a resistor connected in parallel.

[0029] Furthermore, each power output channel includes a feedback pin;

[0030] The feedback pins of both the first power output channel and the second power output channel are grounded through a parallel resistor;

[0031] The feedback pins of both the third and fourth power output channels are grounded through a resistor.

[0032] Furthermore, the voltage input pins of the second power supply circuit are all connected to a 12V power supply device;

[0033] The voltage input pin of the second power supply circuit is also grounded through four parallel capacitors.

[0034] Furthermore, the second power supply circuit includes multiple voltage output pins; each of the multiple voltage output pins is connected to the voltage input terminal of the FPGA through four parallel resistors.

[0035] Compared with existing technologies, this utility model connects different terminal devices together through FPGA and multiple fiber optic adapter modules. Utilizing the high bandwidth, low loss, and electromagnetic interference resistance of fiber optic transmission, multiple signals can be transmitted simultaneously through multi-channel fiber optic transmission, which is no longer a point-to-point method, thereby improving transmission efficiency.

[0036] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages will become apparent from the description or be learned by practicing this invention. The objectives and other advantages of this invention can be realized and obtained from the details specifically pointed out in the text and accompanying drawings. Attached Figure Description

[0037] The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0038] Figure 1 This is a block diagram of a radar signal switching and routing system based on FPGA and multi-channel optical fiber transmission, according to an embodiment of this utility model.

[0039] Figure 2 This is a circuit diagram of the power input channel of the first power supply circuit in this embodiment of the present invention;

[0040] Figure 3 This is a circuit diagram of the power output channel of the first power supply circuit in an embodiment of this utility model.

[0041] Figure 4 This is a circuit diagram of the input terminal of the second power supply circuit according to an embodiment of the present invention;

[0042] Figure 5 This is a circuit diagram of the power output channel of the second power supply circuit in an embodiment of this utility model. Detailed Implementation

[0043] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0044] A specific embodiment of this utility model discloses a radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission, such as... Figure 1 As shown, it includes an FPGA, multiple fiber optic adapter modules, a power supply module, and a clock module.

[0045] Each fiber optic adapter module includes a multi-channel parallel optical transceiver module and a one-to-many fiber optic adapter cable.

[0046] The multi-channel parallel optical transceiver module is connected to the FPGA via a GTH interface;

[0047] The multi-channel parallel optical transceiver module is connected to the terminal equipment via a one-to-many fiber optic adapter cable.

[0048] The power module includes a first power circuit and a second power circuit.

[0049] The input terminal of the first power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal of multiple fiber optic conversion modules.

[0050] The input terminal of the second power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal module of the FPGA.

[0051] The clock module is connected to the clock signal input terminals of the FPGA and the multi-channel parallel optical transceiver module.

[0052] In practice, the terminal equipment may be, for example, a radar signal processing terminal.

[0053] Compared with existing technologies, the radar signal switching and routing system based on FPGA and multi-channel optical fiber transmission provided in this embodiment connects different terminal devices together through FPGA and multiple optical fiber adapter modules. Utilizing the high bandwidth, low loss, and anti-electromagnetic interference characteristics of optical fiber transmission, multiple signals can be transmitted simultaneously through multi-channel optical fiber transmission, which is no longer a point-to-point method, thereby improving transmission efficiency.

[0054] In implementation, the fiber optic adapter module enables the mutual conversion between optical and electrical signals. The module consists of multiple parallel optical transceiver modules and a 1-to-12 fiber optic adapter cable. The multiple parallel optical transceiver modules connect to the FPGA via a GTH interface, while the 1-to-12 fiber optic adapter cable connects to the terminal equipment. Commonly used radar signal processors have 12-channel, 8-channel, and 4-channel parallel optical transceiver modules. By creating 1-to-12 fiber optic adapter cables, flexible connections between the radar signal switching routing system and several terminal modules are achieved, enabling reconfigurable system configuration. For example, a 12-channel parallel optical transceiver module combined with a 1-to-12 fiber optic adapter cable can establish fiber optic communication connections between the radar signal switching routing system and 12 terminal modules.

[0055] In practice, the multi-channel parallel optical transceiver module can be either the high-performance press-fit 12-channel parallel optical transceiver module HTG8518A-MD-024YY-G or HTG8518A-MD-026YY-G from AVIC Optoelectronics.

[0056] In practice, the signal input terminal of the multi-channel parallel optical transceiver module is connected to the GT output terminal of the FPGA, and the signal output terminal of the multi-channel parallel optical transceiver module is connected to the GT input terminal of the FPGA.

[0057] The TX_3V3 and RX_3V3 of the multi-channel parallel optical transceiver module are the power supplies for the transmitting and receiving ends of the optical transceiver module. These two power supplies are generated by the output of the second power supply circuit through a ferrite bead.

[0058] The power module supplies power to the FPGA and the fiber optic adapter module.

[0059] The system also includes a clock module to provide the clock required for the normal operation of the FPGA and the multi-parallel optical transceiver module. In implementation, the CDCM6208 can be used as the clock module.

[0060] During implementation, the FPGA and the fiber optic adapter module require different currents. In order to provide a stable current, the power supply includes a first power supply circuit and a second power supply circuit, which power the fiber optic adapter module and the FPGA, respectively.

[0061] In practice, the first power supply circuit uses the LTM4644DCDC chip.

[0062] The first power supply circuit includes a first power input channel, a second power input channel, a third power input channel, and a fourth power input channel;

[0063] Each power input channel's voltage input pin is connected to a 12V power supply device; each power input channel's voltage input pin is grounded through a first circuit; the first circuit includes four parallel filter capacitors;

[0064] The voltage input pin of each power input channel is grounded through two pull-down resistors connected in series.

[0065] like Figure 2 As shown, the voltage input pin of each power input channel is grounded through parallel capacitors C1709, C1710, C1711, and C1712, thereby filtering the input voltage.

[0066] To enable edge control of each input channel, each power input channel includes a run control input pin (RUN pin), which is grounded via a pull-down resistor. The RUN1 pin of the first power input channel is grounded via resistors R520 and R516 in series. The RUN2 pin of the second power input channel is grounded via resistors R519 and R516 in series. The RUN3 and RUN4 pins of the third and fourth power input channels are both grounded via resistors R1018 and R514 in series.

[0067] The first power supply circuit includes multiple power output channels, providing power to multiple channels.

[0068] Specifically, the first power supply circuit includes a first power supply output channel;

[0069] The first power output channel includes multiple first power output pins; the multiple first power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module through two parallel resistors;

[0070] The plurality of first power output pins are also grounded via a second circuit;

[0071] The second circuit includes two capacitors and one resistor connected in parallel.

[0072] like Figure 3 As shown, the first power output channel includes multiple first power output pins VOUT1_1, VOUT1_2, and VOUT1_3. These multiple first power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module through two parallel resistors X11 and X12.

[0073] To improve output stability, multiple first power output pins are also grounded through a second circuit, which includes two capacitors (C1713, C1714) and a resistor R521 connected in parallel to filter the output voltage.

[0074] In practice, the first power supply circuit also includes a second power output channel;

[0075] The second power output channel includes multiple second power output pins; the multiple second power output pins are uniformly connected to the multiple first power output pins of the first power output channel.

[0076] The multiple second power output pins (VOUT2_1, VOUT2_2, VOUT2_3) of the second power output channel are connected to the multiple first power output pins of the first power output channel, that is, the first power output channel and the second power output channel are connected in parallel.

[0077] In practice, the first power supply circuit also includes a third power output channel;

[0078] The third power output channel includes multiple third power output pins; the multiple third power output pins are connected to the 1.5V digital power input terminal of the fiber optic conversion module through resistor X1;

[0079] The plurality of third power output pins are also grounded via a third circuit; the third circuit includes a capacitor C1715 and a resistor R333 connected in parallel.

[0080] The third power output channel includes multiple third power output pins VOUT3_1, VOUT3_2, and VOUT3_3. These multiple third power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module via resistor X1.

[0081] To improve output stability, the third power supply output pin is also grounded through a third circuit consisting of a parallel capacitor C1715 and a resistor R333, thereby filtering the output voltage.

[0082] In practice, the first power supply circuit also includes a fourth power output channel;

[0083] The fourth power output channel includes multiple fourth power output pins; the multiple fourth power output pins are connected to the 3.3V digital power input terminal of the fiber optic conversion module through resistor X2;

[0084] The plurality of fourth power output pins are also grounded via a fourth circuit; the fourth circuit includes a capacitor C1716 and a resistor R525 connected in parallel.

[0085] The fourth power output channel includes multiple third power output pins VOUT4_1, VOUT4_2, and VOUT4_3. These multiple fourth power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module via resistor X2.

[0086] To improve output stability, the fourth power output pin is also grounded through a fourth circuit consisting of a parallel capacitor C1716 and a resistor R525, thereby filtering the output voltage.

[0087] In practice, each power output channel includes a feedback pin;

[0088] The feedback pins of both the first and second power output channels are grounded through parallel resistors P948 and R949.

[0089] The feedback pins of both the third and fourth power output channels are grounded through a resistor.

[0090] As shown in the figure, the feedback pin FB1 of the first power output channel and the feedback pin FB2 of the second power output channel are both grounded through parallel resistors P948 and R949.

[0091] The feedback pins of the third power output channel are all grounded through resistor R950, and the feedback pins of the fourth power output channel are all grounded through resistor R951. Different voltage values ​​can be output by adjusting the resistance value of the pull-down resistor.

[0092] The second power supply circuit is used to power the FPGA. In implementation, the second power supply circuit uses the LTM4630 power supply chip.

[0093] Specifically, the voltage input pins of the second power supply circuit are all connected to a 12V power supply device;

[0094] The voltage input pin of the second power supply circuit is also grounded through four parallel capacitors.

[0095] like Figure 4 As shown, the voltage input pin of the second power supply circuit is grounded through filter capacitors C1671, C1672, C1673 and C1674.

[0096] Specifically, the second power supply circuit includes multiple voltage output pins; each of the multiple voltage output pins is connected to the voltage input terminal of the FPGA through four parallel resistors.

[0097] like Figure 5 As shown, the second power supply circuit includes two output channels, each of which includes multiple voltage output pins. Each voltage output pin of the second power supply circuit is connected to the voltage input terminal of the FPGA through four parallel resistors X3, X4, X5, and X6.

[0098] To improve the stability of the output voltage, each voltage output pin is also grounded through a fifth circuit.

[0099] The fifth circuit includes five capacitors and one resistor connected in parallel. One of the capacitors is a polarized capacitor, with its positive terminal connected to the voltage output pin of the second power supply circuit and its negative terminal grounded, thereby improving the stability of the output.

[0100] Those skilled in the art will understand that the routing program involved in the FPGA in the above embodiments is a common method in the prior art. Existing routing programs can simply be run in the FPGA, and this invention does not involve any software improvements. This invention only requires connecting the various devices with corresponding functions through the connection relationships given in the embodiments of this invention, without involving any program software improvements. As for the connection methods between the various hardware devices with corresponding functions, these can all be implemented by those skilled in the art using existing technology, and will not be described in detail here.

[0101] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission, characterized in that, Includes FPGA, multiple fiber optic adapter modules, power supply module, and clock module; Each fiber optic adapter module includes a multi-channel parallel optical transceiver module and a one-to-many fiber optic adapter cable. The multi-channel parallel optical transceiver module is connected to the FPGA via a GTH interface; The multi-channel parallel optical transceiver module is connected to the terminal equipment via a one-to-many fiber optic adapter cable. The power module includes a first power circuit and a second power circuit. The input terminal of the first power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal of multiple fiber optic conversion modules. The input terminal of the second power supply circuit is connected to the power supply equipment, and the output terminal is connected to the power input terminal module of the FPGA. The clock module is connected to the clock signal input terminals of the FPGA and the multi-channel parallel optical transceiver module.

2. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 1, characterized in that, The first power supply circuit includes a first power input channel, a second power input channel, a third power input channel, and a fourth power input channel; Each power input channel's voltage input pin is connected to a 12V power supply device; each power input channel's voltage input pin is grounded through a first circuit; the first circuit includes four parallel filter capacitors; The voltage input pin of each power input channel is grounded through two pull-down resistors connected in series.

3. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 2, characterized in that, Each power input channel includes a run control input pin, and each run control input pin is grounded via a pull-down resistor.

4. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 1, characterized in that, The first power supply circuit includes a first power output channel; The first power output channel includes multiple first power output pins; the multiple first power output pins are connected to the 1.5V power input terminal of the fiber optic conversion module through two parallel resistors; The plurality of first power output pins are also grounded via a second circuit; The second circuit includes two capacitors and one resistor connected in parallel.

5. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 4, characterized in that, The first power supply circuit also includes a second power output channel; The second power output channel includes multiple second power output pins; the multiple second power output pins are uniformly connected to the multiple first power output pins of the first power output channel.

6. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 4, characterized in that, The first power supply circuit also includes a third power output channel; The third power output channel includes multiple third power output pins; the multiple third power output pins are connected to the 1.5V digital power input terminal of the fiber optic conversion module through resistors; The plurality of third power output pins are also grounded via a third circuit; the third circuit includes a capacitor and a resistor connected in parallel.

7. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 4, characterized in that, The first power supply circuit also includes a fourth power output channel; The fourth power output channel includes multiple fourth power output pins; the multiple fourth power output pins are connected to the 3.3V digital power input terminal of the fiber optic conversion module through resistors; The plurality of fourth power output pins are also grounded via a fourth circuit; the fourth circuit includes a capacitor and a resistor connected in parallel.

8. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 1, characterized in that, Each power output channel includes a feedback pin; The feedback pins of both the first power output channel and the second power output channel are grounded through a parallel resistor; The feedback pins of both the third and fourth power output channels are grounded through a resistor.

9. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 1, characterized in that, The voltage input pins of the second power supply circuit are all connected to a 12V power supply device; The voltage input pin of the second power supply circuit is also grounded through four parallel capacitors.

10. The radar signal switching and routing system based on FPGA and multi-channel fiber optic transmission according to claim 1, characterized in that, The second power supply circuit includes multiple voltage output pins; each of the multiple voltage output pins is connected to the voltage input terminal of the FPGA through four parallel resistors.

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