CN114444418A - Multi-channel high-precision digital analog hybrid module based on high-speed digital circuit - Google Patents
Multi-channel high-precision digital analog hybrid module based on high-speed digital circuit Download PDFInfo
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- CN114444418A CN114444418A CN202111645610.3A CN202111645610A CN114444418A CN 114444418 A CN114444418 A CN 114444418A CN 202111645610 A CN202111645610 A CN 202111645610A CN 114444418 A CN114444418 A CN 114444418A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/32—Circuit design at the digital level
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
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- G06F30/30—Circuit design
- G06F30/32—Circuit design at the digital level
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- G06F30/3308—Design verification, e.g. functional simulation or model checking using simulation
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Abstract
The invention relates to the technical field of sonar signal processing, in particular to a high-speed digital circuit-based multi-channel high-precision digital-analog hybrid module which comprises a main control unit, a digital-analog conversion unit and a system power supply, wherein the main control unit comprises a main control function circuit, a DDR3SDRAM storage circuit, a network switch, a gigabit Ethernet interface circuit and a clock function circuit, the digital-analog conversion unit comprises a logic unit function circuit, a digital-analog conversion function circuit, an operational amplification function circuit and an analog signal interface, and the system power supply provides various power supplies required by the circuits of the module.
Description
Technical Field
The invention relates to the technical field of sonar signal processing, in particular to a multi-channel high-precision digital analog hybrid module based on a high-speed digital circuit.
Background
The sonar signal processor is mainly responsible for receiving buoy original sound data sent by the buoy receiver or the remote data acquisition unit, processing the signal and processing the information, outputting a processing result to the sonar display control processor for display, simultaneously sending front-end data to the module through the gigabit Ethernet interface, completing the receiving and exchanging of network data and the sending of related commands by the module, and simultaneously outputting multi-channel differential analog signals for a rear-end listening station and a data recording station to use.
According to project requirements, a module with a network switching function and used for outputting multi-channel high-precision differential analog signals needs to be developed.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a multi-channel high-precision digital-analog hybrid module based on a high-speed digital circuit.
In order to achieve the purpose, the invention provides the following technical scheme: a multi-channel high-precision digital-analog hybrid module based on high-speed digital circuit comprises a main control unit, a digital-analog conversion unit and a system power supply,
the main control unit comprises a main control function module, a storage module, a network switch, a gigabit Ethernet interface module and a clock function module, wherein the storage module and the network switch are respectively in communication connection with the main control function module;
the digital-to-analog conversion unit comprises a logic unit function module, a digital-to-analog conversion function module, an operational amplification function module and an analog signal interface, wherein the digital-to-analog conversion function module is connected with the logic unit function module;
the system power supply is used for supplying power to the main control unit and the digital-to-analog conversion unit.
Preferably, the memory module is a DDR3SDRAM memory function circuit.
Preferably, the main control function module adopts a DDR3 standard interface, and the main control function module communicates with the DDR3SDRAM storage function module through a DDR3 standard interface.
Preferably, the data transmission between the master control function module and the gigabit ethernet interface module is standard gigabit ethernet electrical interface data transmission.
Preferably, the main control function module and the logic unit function module are interconnected and communicated through an enhanced local bus.
Preferably, the digital-to-analog conversion functional module is a digital-to-analog conversion chip, and the resolution of the digital-to-analog conversion chip is 16 bits.
Preferably, the analog signal interface outputs a differential signal.
Compared with the prior art, the invention has the beneficial effects that: in the technical scheme of the invention, the provided multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit has the characteristics of convenient interface, strong data processing capacity, more output analog signal channels, high precision and the like. The main control unit with the main control function uses P2020 as a main chip, the chip has high working main frequency, rich interfaces and stable performance, can be suitable for severe environments, and a module provides a gigabit Ethernet electrical interface, runs a TCP/IP protocol and can be conveniently connected with other equipment; the digital-to-analog conversion unit with the digital-to-analog conversion function uses the FPGA as a logic control chip, is flexible, convenient, stable and reliable, adopts a high-resolution digital-to-analog conversion chip and a high-performance two-stage operational amplifier, and finally realizes multi-channel high-precision differential signal output by analog signals, and the output signals have strong anti-interference capability.
Drawings
FIG. 1 is a block diagram of a modular system configuration of the present invention;
FIG. 2 is a block diagram of a block data flow of the present invention;
in the figure: A. a main control unit; B. a digital-to-analog conversion unit; C. a system power supply;
1. a master control function circuit; 2. a storage circuit; 3. a network switch; 4. gigabit ethernet network interface circuitry; 5. gigabit ethernet interfaces; 6. a clock function circuit; 7. a logic cell function circuit; 8. a digital-to-analog conversion function circuit; 9. an operational amplification function circuit; 10. an analog signal interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 to 2, the present invention provides a technical solution: a multi-channel high-precision digital-analog hybrid module based on high-speed digital circuit comprises a main control unit, a digital-analog conversion unit and a system power supply,
the main control function circuit adopts P2020 as a main chip, the chip is a dual-core processor adopting a PowerPC architecture, the working main frequency is high, the interface resources are rich, and 3 gigabit Ethernet interfaces can be provided. The front-end network data is communicated with the P2020 through a gigabit Ethernet exchange chip, and the transmission of gigabit network data is realized by adopting a standard TCP/IP protocol. The digital-to-analog conversion unit adopts the FPGA as a logic control chip, the FPGA has rich pin resources and has the advantages of flexibility and convenience, universal parallel data are directly converted into serial data which are sent to a serial digital-to-analog conversion chip, and signal mode conversion and level conversion are carried out on the serial data through a rear-end two-stage operational amplification circuit.
The main control unit comprises a main control function module, a storage module, a network switch, a gigabit Ethernet interface module and a clock function module, wherein the storage module and the network switch are respectively in communication connection with the main control function module;
the storage module is a DDR3SDRAM storage function circuit.
The main control function module adopts a DDR3 standard interface, communicates with a DDR3SDRAM storage function module through a DDR3 standard interface, adopts DDR3SDRAM with higher data bandwidth, higher working frequency and lower power consumption for ensuring that a CPU can stably run at a high speed and higher data storage speed, and has 64bit wide.
When data comes in from the outside, the gigabit Ethernet interface receives the relevant data, enters the CPU through the network switch, performs data unpacking processing, and writes the data into the corresponding address space of the DDR3SDRAM to perform caching.
The digital-to-analog conversion unit comprises a logic unit function module, a digital-to-analog conversion function module, an operational amplification function module and an analog signal interface, wherein the digital-to-analog conversion function module is connected with the logic unit function module;
the FPGA in the logic unit functional circuit adopts a device of Xilinx company, the CPU sends data cached in DDR3SDRAM to the FPGA, the FPGA completes the data receiving and format conversion processing and then transmits the data to a digital-to-analog conversion chip, and the rear end of the digital-to-analog conversion chip adopts a two-stage amplifying circuit to output signals.
In order to ensure that the operational amplifier circuit can realize multi-channel analog signal output by using fewer devices, the operational amplifier circuit is realized by adopting a high-performance operational amplifier and a processing mode of a plurality of loads.
The system power supply is used for supplying power to the main control unit and the digital-to-analog conversion unit.
And standard gigabit Ethernet electrical interface data transmission is performed between the master control function module and the gigabit Ethernet interface module, so that the universality of an external network interface is ensured.
The main control function module and the logic unit function module are interconnected and communicated through an enhanced local bus, so that sufficient data bandwidth is ensured between the CPU and the FPGA.
The digital-to-analog conversion function module is a digital-to-analog conversion chip, the resolution ratio of the digital-to-analog conversion chip is 16 bits, the digital-to-analog conversion circuit can output high-precision analog signals, a high-precision serial digital-to-analog conversion device with the resolution ratio of 16 bits is adopted, a low-noise power supply chip is adopted, and measures such as filtering are adopted at the output end of an analog power supply.
The analog signal interface outputs differential signals, so that the analog signals output by the module are enhanced to have stronger anti-interference capability and can effectively inhibit EMI, and the output signals are converted into differential signals to be output by adopting a single-ended-to-differential operational amplifier.
In order to shorten the development period and ensure the flexibility and reliability of software development, the CPU-based operating system adopts embedded Linux, has good stability and reliable safety, provides driving support for various interfaces such as network and storage, and is convenient for developers to develop software.
According to the technical scheme, the interconnection relationship is established between the main control chip in the main control function circuit and the network switch and between the main control chip in the main control function circuit and the DDR3SDRAM storage circuit, so that gigabit Ethernet data from the outside enters the CPU after passing through the network switch, is stored in the corresponding address space of the DDR3SDRAM after being analyzed and processed by the CPU, and the interconnection relationship is established between the main control CPU in the main control function circuit and the control chip FPGA in the logic unit function circuit, so that the data of the CPU can be transmitted to the FPGA through the enhanced local bus in a certain time sequence and format.
Furthermore, the FPGA in the logic unit circuit adopts a device of xilinx corporation, and runs a relevant code for data reception and digital-to-analog conversion on the FPGA, so that the data is sent to the digital-to-analog conversion chip in a standard format.
Furthermore, in order to realize high-precision digital-to-analog conversion, a single-channel digital-to-analog conversion chip adopts a high-precision device with the resolution of 16bit, adopts a low-noise power supply chip, and adopts measures such as filtering and the like at the output end of an analog power supply.
Furthermore, in order to enhance the driving capability of the analog signal, the operational amplifier adopts a device of saint pont wei company, and realizes multi-channel conversion by using a multi-channel load processing mode.
Furthermore, in order to enhance the anti-interference capability of the analog signal output by the module and effectively inhibit EMI, the analog signal interface is realized by adopting a chip with a single-end-to-differential function.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides a high-speed digital circuit based on multichannel high accuracy digital simulation mixes module which characterized in that: comprises a main control unit, a digital-to-analog conversion unit and a system power supply,
the main control unit comprises a main control function module, a storage module, a network switch, a gigabit Ethernet interface module and a clock function module, wherein the storage module and the network switch are respectively in communication connection with the main control function module;
the digital-to-analog conversion unit comprises a logic unit function module, a digital-to-analog conversion function module, an operational amplification function module and an analog signal interface, wherein the digital-to-analog conversion function module is connected with the logic unit function module;
the system power supply is used for supplying power to the main control unit and the digital-to-analog conversion unit.
2. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit of claim 1, wherein: the storage module is a DDR3SDRAM storage function circuit.
3. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit as claimed in claim 2, wherein: the main control function module adopts a DDR3 standard interface, and communicates with the DDR3SDRAM storage function module through the DDR3 standard interface.
4. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit according to claim 1, characterized in that: and the master control function module and the gigabit Ethernet interface module are in standard gigabit Ethernet electrical interface data transmission.
5. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit of claim 1, wherein: the main control function module and the logic unit function module are communicated with each other through an enhanced local bus.
6. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit of claim 1, wherein: the digital-to-analog conversion functional module is a digital-to-analog conversion chip, and the resolution of the digital-to-analog conversion chip is 16 bits.
7. The multi-channel high-precision digital-analog hybrid module based on the high-speed digital circuit of claim 1, wherein: the analog signal interface outputs a differential signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645610.3A CN114444418A (en) | 2021-12-30 | 2021-12-30 | Multi-channel high-precision digital analog hybrid module based on high-speed digital circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111645610.3A CN114444418A (en) | 2021-12-30 | 2021-12-30 | Multi-channel high-precision digital analog hybrid module based on high-speed digital circuit |
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| Publication Number | Publication Date |
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| CN114444418A true CN114444418A (en) | 2022-05-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111645610.3A Pending CN114444418A (en) | 2021-12-30 | 2021-12-30 | Multi-channel high-precision digital analog hybrid module based on high-speed digital circuit |
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2021
- 2021-12-30 CN CN202111645610.3A patent/CN114444418A/en active Pending
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