CN220139727U - Multi-channel acoustic array driving device based on LVDS - Google Patents
Multi-channel acoustic array driving device based on LVDS Download PDFInfo
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- CN220139727U CN220139727U CN202320807645.0U CN202320807645U CN220139727U CN 220139727 U CN220139727 U CN 220139727U CN 202320807645 U CN202320807645 U CN 202320807645U CN 220139727 U CN220139727 U CN 220139727U
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- 238000004891 communication Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims description 3
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- 238000005094 computer simulation Methods 0.000 abstract description 2
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Abstract
The utility model relates to a multichannel acoustic array driving device based on LVDS, comprising: the panel of the power amplifier case is provided with a power socket, an input signal interface, an output signal interface and a communication interface; the power amplifier cabinet is internally provided with a power amplifier conditioning circuit board and a main control circuit board which are connected in sequence; the power amplifier conditioning circuit board comprises a program control attenuation circuit and a power amplification circuit, and the main control circuit board comprises a transmission circuit based on LVDS; the LVDS-based transmission circuit comprises a storage circuit, an LVDS transmission circuit and an interface circuit; the main control circuit board is connected with the communication interface, receives the numerical control signal sent by the upper computer through the communication interface and transmits the numerical control signal to the power amplifier conditioning circuit board through the LVDS transmission circuit. The device can realize the dynamic simulation of the signal of the underwater sound source and can be used for carrying out underwater simulation test.
Description
Technical Field
The utility model belongs to the technical field of underwater acoustic signals, and particularly relates to a multichannel acoustic array driving device based on LVDS.
Background
With the development and application of underwater acoustic signal processing technology, acquisition, processing, transmission and detection of underwater acoustic signals are becoming more and more important. The underwater physical parameter measurement and detection can be carried out through the processing of underwater acoustic signals. In the process of carrying out underwater acoustic test, a device for simulating an underwater sound source is needed, and the device can attenuate and amplify multi-channel electric signals in a program-controlled manner, convert the signals into sound signals through a transducer and transmit the sound signals to the outside through an array structure, so that various sound source signals possibly generated underwater are simulated.
Disclosure of Invention
The utility model aims to provide a multi-channel acoustic array driving device based on LVDS.
The technical scheme for solving the problems is as follows: a LVDS-based multi-channel acoustic array driving apparatus, comprising:
the panel of the power amplifier case is provided with a power socket, an input signal interface, an output signal interface and a communication interface;
the power amplifier cabinet is internally provided with a power amplifier conditioning circuit board and a main control circuit board which are connected in sequence;
the power amplifier conditioning circuit board comprises a program control attenuation circuit and a power amplification circuit, and the main control circuit board comprises a transmission circuit based on LVDS;
the power amplifier conditioning circuit board is connected with the input signal interface, receives an analog signal sent by the upper computer through the input signal interface, and transmits the processed signal to the acoustic array through the output interface;
the LVDS-based transmission circuit comprises a storage circuit, an LVDS transmission circuit and an interface circuit;
the main control circuit board is connected with the communication interface, receives the numerical control signal sent by the upper computer through the communication interface and transmits the numerical control signal to the power amplifier conditioning circuit board through the LVDS transmission circuit.
The working principle of the device is as follows: the device receives analog signals and digital control signals generated by the upper computer through simulation, the analog signals are input to a power amplifier conditioning circuit board in a power amplifier cabinet through a cable, the digital control signals are input to the power amplifier conditioning circuit board through a transmission circuit based on LVDS, program-controlled attenuation and power amplification are carried out on the analog signals in the cabinet according to the digital control signals, signals are generated to drive an acoustic array, the acoustic array converts electric signals into acoustic signals and transmits the acoustic signals out, and then the simulation underwater sound source is completed.
According to the scheme, the program-controlled attenuation circuit consists of a two-stage SPI controlled attenuation circuit and a one-stage SPI controlled variable gain circuit, and the power amplification circuit consists of a one-stage voltage amplitude amplification circuit and a one-stage current amplification circuit.
According to the scheme, the power amplifier cabinet is also internally provided with the cooling fan, the power socket and the board guide rail, and the power amplifier conditioning circuit board and the main control circuit board are connected with the bottom plate of the power amplifier cabinet through the board guide rail.
According to the scheme, the power amplification signal conditioning board further comprises a sub-control circuit, and the power amplification signal conditioning board is connected with the main control circuit board through the sub-control circuit.
The device has the beneficial effects that:
1. the device can realize the dynamic simulation of the signal of the underwater sound source and can be used for carrying out underwater simulation test;
2. the device can realize the driving of the multipath acoustic array, each path can independently control the size of the signal, and the multipath signals can be synchronously output.
Drawings
FIG. 1 is a schematic diagram of the structure of an apparatus according to one embodiment of the utility model;
fig. 2 is a schematic circuit configuration of an apparatus according to an embodiment of the present utility model.
Detailed Description
The present utility model will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
As shown in fig. 1, a multi-channel acoustic array driving system based on LVDS, comprising:
the power amplifier case is provided with an upper cover plate 1 and a rear panel 2: the rear panel 2 is provided with a power socket, an input signal interface, an output signal interface and a communication interface;
the power amplifier cabinet is also internally provided with a main cooling fan 3, a power socket 4 and a board guide rail 5: in order to facilitate the insertion and the extraction of the board card, the board card guide rail adopts an aluminum alloy integrated guide rail which is convenient to mount and dismount; the device bottom plate 6 and the device bus bottom plate 7 are 7U in size, and are reinforced by adopting a 3mm thickened PCB (printed circuit board) so as to facilitate the insertion and the extraction of other boards;
the power amplifier cabinet is also internally provided with a bus board connector 8, a device power supply 9 and a backboard fixing beam 10 for fixing the backboard.
The conditioning circuit board is connected with the bottom plate through the board card guide rail, and the analog signal of the upper computer is input to the power amplifier conditioning circuit board through the input signal interface of the rear panel of the device.
The power amplifier conditioning circuit board comprises a program control attenuation circuit and a power amplification circuit, and the main control circuit board comprises a transmission circuit based on LVDS;
the power amplifier conditioning circuit board receives an analog signal sent by the upper computer through the input signal interface and transmits a conditioned signal to the acoustic array through the output interface;
the LVDS-based transmission circuit comprises a storage circuit, an LVDS transmission circuit and an interface circuit;
the main control circuit board is connected with the communication interface, receives the numerical control signal sent by the upper computer through the communication interface and transmits the numerical control signal to the power amplifier conditioning circuit board through the LVDS transmission circuit;
the digital control signal of the upper computer is input to the main control circuit board through the communication interface on the rear panel, and the main control circuit board is also connected with the bottom plate through the guide rail.
The power signal of the power amplifier conditioning circuit board is output to the acoustic array through the connector of the rear panel.
A schematic circuit diagram of a multi-channel acoustic array driving device based on LVDS in this embodiment is shown in FIG. 2.
The whole acoustic driving system mainly comprises 8 power amplifier cabinets, wherein each cabinet comprises 8 power amplifier conditioning circuit boards (4 paths of each cabinet and 32 paths of each cabinet) and a main control circuit board, 9 circuit plugboards and 1 backboard in total, and a front panel, a rear panel, an adapter plate and cabinet structural members;
the power amplification signal conditioning board comprises a sub-control circuit, an attenuation conditioning circuit and a power amplification circuit. The main control board comprises a memory, a transmission circuit and an interface circuit. The power amplifier conditioning board completes the function of carrying out numerical control attenuation or amplification on the analog signals input by the upper computer, and the main control circuit board completes the function of storing and transmitting the digital control signals output by the upper computer. The program-controlled attenuation and amplification are sent to the main control circuit board by the upper computer through Ethernet or RS232 serial port, and are respectively sent to each power amplifier conditioning circuit by the main control circuit board through the sub-control circuit to carry out attenuation and amplification control.
The PS part of the main control circuit board is connected with the gigabit Ethernet PHY, the RSR232 transceiver and the memory chip, the PL part is connected with the custom SPI serial data interface and the digital IO port, wherein the PS part mainly completes the functions of data transmission, parameter power-down storage and the like of the Ethernet and the RS232 interface, the PL part mainly realizes the serial data interface to realize the receiving of the custom SPI interface data from the digital machine, and the interface is finally transmitted in LVDS level; and the data processed by the main control board is issued to the digital interface circuit of the conditioning circuit board through the SPI port at the same time.
The software of the upper computer generates 256 paths of analog signals and digital control signals through analog calculation, the signals are input into 8 cases through cables, program control attenuation and power amplification are carried out on the signals in the cases, 256 paths of signals are generated and used for driving 256 acoustic arrays, and the acoustic arrays convert electric signals into acoustic signals and transmit the acoustic signals to serve as an analog underwater sound source. The transmission of the upper computer digital control signal and the transmission of the internal part SPI signal are based on LVDS level standards.
The device can realize the driving of 256 acoustic arrays, each path can independently control the size of signals, and 256 paths of signals can be synchronously output.
Claims (4)
1. A multi-channel acoustic array driving apparatus based on LVDS, comprising:
the panel of the power amplifier case is provided with a power socket, an input signal interface, an output signal interface and a communication interface;
the power amplifier cabinet is internally provided with a power amplifier conditioning circuit board and a main control circuit board which are connected in sequence;
the power amplifier conditioning circuit board comprises a program control attenuation circuit and a power amplification circuit, and the main control circuit board comprises a transmission circuit based on LVDS;
the power amplifier conditioning circuit board is connected with the input signal interface, receives an analog signal sent by the upper computer through the input signal interface, and transmits the processed signal to the acoustic array through the output interface;
the LVDS-based transmission circuit comprises a storage circuit, an LVDS transmission circuit and an interface circuit;
the main control circuit board is connected with the communication interface, receives the numerical control signal sent by the upper computer through the communication interface and transmits the numerical control signal to the power amplifier conditioning circuit board through the LVDS transmission circuit.
2. The LVDS-based multi-channel acoustic array driving device according to claim 1, wherein the program-controlled attenuation circuit is composed of a two-stage SPI-controlled attenuation circuit and a one-stage SPI-controlled variable gain circuit, and the power amplification circuit is composed of a one-stage voltage amplitude amplification circuit and a one-stage current amplification circuit.
3. The multi-channel acoustic array driving device based on LVDS according to claim 1, wherein a cooling fan, a power socket and a board guide rail are further arranged in the power amplifier case, and the power amplifier conditioning circuit board and the main control circuit board are connected with a bottom plate of the power amplifier case through the board guide rail.
4. The LVDS-based multichannel acoustic array driving device of claim 1, wherein the power amplifier conditioning circuit board further comprises a sub-control circuit, and the power amplifier conditioning circuit board is connected with the main control circuit board through the sub-control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320807645.0U CN220139727U (en) | 2023-04-12 | 2023-04-12 | Multi-channel acoustic array driving device based on LVDS |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320807645.0U CN220139727U (en) | 2023-04-12 | 2023-04-12 | Multi-channel acoustic array driving device based on LVDS |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220139727U true CN220139727U (en) | 2023-12-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320807645.0U Active CN220139727U (en) | 2023-04-12 | 2023-04-12 | Multi-channel acoustic array driving device based on LVDS |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220139727U (en) |
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2023
- 2023-04-12 CN CN202320807645.0U patent/CN220139727U/en active Active
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