CN204807694U - Signal processing extension - Google Patents

Abstract

The utility model discloses a signal processing extension belongs to the sonar field. Signal processing extension includes: the box, electric connector, connector mounting panel, prefiltering board, automatic gain control enlarge the board, board, drive and control panel, the low voltage power supply board, DSP board, AD board, DA board and computer motherboard are enlargied to the buffering, wherein, the box includes right side board, wind channel board, apron, baffle no. 1, installing frame, baffle no. 2, lower plate, left side board and heat conduction pad. Signal processing extension is small, and processing technology controls easily, and the radiating effect is good, and work efficiency is high, the machine stable performance.

Description

A signal processing extension

technical field

The utility model relates to a signal processing extension, which belongs to the field of sonar.

Background technique

The receiver for receiving signals in the sonar field includes a signal processing extension. The electrical connector of the existing signal processing extension is arranged at the rear, which makes the depth direction of the signal processing extension larger, which in turn affects the cabinet size of the receiver. The overall volume of the receiver is relatively large. And the signal processing sub-unit is welded by aluminum plate. Since the angle requirements between the surfaces must be vertical or parallel during welding, a lot of tooling is required to ensure the dimensional accuracy of the box. In addition, the welding process will cause shrinkage, bending, and distortion. And other deformation, which affects the dimensional accuracy of the box, and the welding process is difficult to control, and the quality is difficult to guarantee. In addition, the sealing groove between the existing signal processing extension cabinet and the panel and backboard is provided on the cabinet, which is difficult to process.

Contents of the invention

In view of this, the purpose of this utility model is to provide a signal processing sub-machine, which is small in size, easy to control the processing technology, good in heat dissipation effect, high in working efficiency and stable in machine performance.

The purpose of this utility model is achieved by the following technical solutions:

A signal processing extension, including: a box body, an electrical connector, a connector mounting board, a pre-filter board, an automatic gain control amplifier board, a buffer amplifier board, a drive and control board, a low-voltage power supply board, and a DSP board (digital signal processing board) board), AD board (analog-to-digital conversion board), DA board (digital-to-analog conversion board), and computer motherboard;

Among them, the box body includes the right side plate, the air duct plate, the first cover plate, the first partition plate, the installation frame, the second partition plate, the lower bottom plate, the left side plate and the thermal pad;

The left side panel, the right side panel and the partition one are fixed vertically on the lower bottom plate, the height of the right side panel and the partition is the same, and the height of the left side panel is lower than the height of the right side panel and the partition one; the cover panel one is fixed on the right The side plate and the upper end of the partition one, the lower bottom plate, the right side board, the partition one and the cover plate one enclose a cavity one; the left side of the installation frame is fixed on the top of the left side board, the right side is fixed on the partition one, and the installation frame Parallel to the lower base plate, the lower base plate, the left side plate, the partition plate and the installation frame form the cavity two;

There are positioning grooves on the upper surface of the middle and lower bottom plate of the cavity, and the lower surface of the cover plate is provided with positioning grooves corresponding to the upper surface of the lower bottom plate; except for a pair of positioning grooves adjacent to the right side plate, each pair of positioning grooves Adjacent positions are equipped with air duct boards perpendicular to the lower bottom plate; low-voltage power supply board, DSP board 1, DSP board 2, AD board, DA board and computer main board are installed in the positioning slot of cavity 1 in sequence from left to right ; The rear part of cavity one is equipped with a bus bottom plate; low-voltage power supply board, DSP board one, DSP board two, AD board, DA board and adjacent air duct boards are respectively provided with heat conduction pads; low-voltage power supply board, DSP board one , DSP board 2, AD board, and DA board are respectively in contact with one side of the heat conduction pad, and the other side of the heat conduction pad is in contact with the air duct plate;

There is a partition 2 fixed in the horizontal direction in the second cavity, and the second partition divides the second cavity into upper and lower two cavities; the upper surface of the lower bottom plate in the lower cavity is provided with a positioning groove, and the lower surface of the second partition is provided with a The positioning slots corresponding to the upper surface of the lower base plate; the pre-filter board 1, the pre-filter board 2, the automatic gain control amplifier board, the buffer amplifier board and the drive and control board are installed in the positioning slots of the lower cavity in sequence from left to right ;The upper cavity is used for wiring arrangement of electrical connector and pre-filter board 1, pre-filter board 2, automatic gain control amplifier board, buffer amplifier board, drive and control board;

A fan is installed on the top of the cover plate, and a fan cover is installed outside the fan; a connector mounting plate is installed on the installation frame, and an electrical connector is installed on the connector mounting plate; Peripheral equipment console assembly;

The front and rear of the box are respectively equipped with a panel and a backboard that match the box;

Low-voltage power supply board, DSP board 1, DSP board 2, AD board, DA board, computer main board, and bus bottom board are electrically connected to each other; pre-filter board 1, pre-filter board 2, automatic gain control amplifier board, buffer amplifier board , the driver and the control board, the bus backplane and the electrical connector are electrically connected to each other.

Preferably, handles are respectively provided on the left side panel, the right side panel and the cover panel of the box body.

Preferably, one end of the positioning groove in the box body is provided with a chamfer.

Preferably, slide rails are provided under the lower bottom plate of the box body.

Preferably, the right side plate, the first cover plate, the first partition plate, the installation frame, the second partition plate, the lower base plate and the left side plate, and the panel and the back plate are connected by screws and pins in the box body.

Preferably, the panel and the back panel are respectively provided with sealing grooves for sealing with the box body.

Preferably, the air duct plate is composed of a base plate and a cover plate 2, the upper surface of the base plate is processed with a rectangular through groove, the cover plate 2 covers the rectangular through groove of the base plate, the cover plate 2 is fixedly connected to the upper surface of the base plate, and the rectangular through groove The groove is perpendicular to the lower bottom plate of the box body, and the through groove on the base plate forms an air duct.

working principle

The bus backplane provides installation slots for all boards, power transmission, PCI bus protocol and high-speed signal transmission;

The low-voltage power board provides DC power to all power boards;

As the bus control terminal, the main board of the computer loads programs for the DSP board, AD board, and DA board, manages the human-computer interaction interface, and completes the collection, coding and display of manual input;

The AD board converts multiple analog signals into digital signals, implements data encoding through software, and distributes the data to the relevant processing chips of the DSP board through the high-speed LINK interface;

The DSP board includes multiple high-performance DSPs, running algorithm software core programs, and completing digital signal processing;

The DA board converts the digital signal processed by the DSP board through software to adjust the characteristics of the analog signal, converts it into multiple analog signals, and sends the signal to the buffer amplifier board;

The drive and control board complete the collection and display of the whole machine status, and realize the detection of the whole machine status and fault feedback through the IO connection with the bus backplane;

The pre-filter board performs out-of-band filtering on the amplified hydrophone analog signal to retain the effective in-band signal;

The automatic gain control amplifier board normalizes the amplitude of the filtered signal to ensure that the signal amplitude is relatively consistent, and sends the normalized analog signal to the AD board;

The buffer amplifier board amplifies the signal of the microphone and sends the signal to the AD board; at the same time, it amplifies the output signal of the DA separately and sends it to the transmitter and speaker to realize the transmission and listening of communication signals. Beneficial effect

(1) The signal processing extension described in the utility model has a ladder-like box as a whole, and the electrical connector is installed above the cavity with a low height, so that the overall volume of the signal processing extension becomes smaller.

(2) Right side plate, cover plate one, partition one, mounting frame, partition two, lower base plate and left side plate in the box body, and are connected by screws and pins between the panel and the backboard, which solves the problem of prior art The problem of deformation caused by welding is solved, and the dimensional accuracy can be better controlled, and the quality is guaranteed.

(3) The front panel and the back panel are respectively provided with sealing grooves for sealing with the box body, which reduces the difficulty of processing.

(4) The positioning grooves in cavity one and cavity two are provided with chamfers, which can play a guiding role.

(5) There is a slide rail under the cabinet, which is convenient for installation and protects the bottom surface.

(6) There are heat conduction pads between cavity 1, medium and low voltage power supply board, DSP board 1, DSP board 2, AD board, DA board and adjacent air duct boards. The computer main board is adjacent to the right side board, and the heat dissipation method For conduction heat dissipation; a fan is installed on the top of the cover plate, and the heat dissipation method is forced air cooling; in addition, the heat generated by various circuit boards and power supply boards is emitted in the form of radiation, which belongs to radiation heat dissipation; the signal described in the utility model The processing extension integrates three heat dissipation methods of conduction heat dissipation, forced air cooling and radiation heat dissipation, with good heat dissipation effect, high work efficiency and stable machine performance.

Description of drawings

Fig. 1 is a schematic diagram of the internal assembly structure of the signal processing extension described in the present invention;

Fig. 2 is the structural representation of the signal processing cabinet described in the utility model;

Fig. 3 is a cross-sectional top view of the air duct of the signal processing extension unit of the present invention.

In the figure, 1—box body, 2—fan cover, 3—electrical connector, 4—connector mounting plate, 5—pre-filter board 1, 6—pre-filter board 2, 7—automatic gain control amplifier board, 8—buffer amplifier board, 9—drive and control board, 10—low voltage power supply board, 11—DSP board 1, 12—DSP board 2, 13—AD board, 14—DA board, 15—computer main board, 16—slide rail , 17—pin shaft, 18—right side plate, 19—air duct plate, 20—cover plate 1, 21—partition plate 1, 22—installation frame, 23—partition plate 2, 24—left side plate, 25—bottom Bottom plate, 26—thermal conduction pad, 27—substrate, 28—cover plate two.

Detailed ways

The utility model will be described in detail below in conjunction with the accompanying drawings and specific embodiments, but is not limited thereto.

Example 1

As shown in Figure 1, a signal processing extension includes: a box body 1, an electrical connector 3, a connector mounting board 4, a pre-filter board, an automatic gain control amplifier board 7, a buffer amplifier board 8, and a drive and control board 9. Low-voltage power supply board 10, DSP board (digital signal processing board), AD board 13 (analog-to-digital conversion board), DA board 14 (digital-to-analog conversion board), and computer motherboard 15;

Among them, the box body 1 includes a right side plate 18, an air duct plate 19, a cover plate 20, a partition plate 21, an installation frame 22, a partition plate 2 23, a lower bottom plate 25, a left side plate 24 and a thermal pad 26; as shown in the figure 2 shown.

Left side plate 24, right side plate 18 and dividing plate one 21 are vertically fixed on the lower base plate 25, and the height of right side plate 18 and dividing plate is identical, and the height of left side plate 24 is lower than right side plate 18 and dividing plate one 21. Height; cover plate one 20 is fixed on right side plate 18 and partition plate one 21 upper ends, and lower bottom plate 25, right side plate 18, partition plate one 21 and cover plate one 20 enclose cavity one; Mounting frame 22 left side is fixed on The upper end of the left side plate 24, the right side is fixed on the partition one 21, the installation frame 22 is parallel to the lower base plate 25, the lower base plate 25, the left side plate 24, the partition plate, and the installation frame 22 form a cavity two;

A positioning groove is provided on the upper surface of the middle and lower bottom plate 25 of the cavity body, and a positioning groove corresponding to the upper surface of the lower bottom plate 25 is provided on the lower surface of the cover plate 20; except for a pair of positioning grooves adjacent to the right side plate 18, The position adjacent to each pair of positioning slots is equipped with an air duct plate 19 perpendicular to the lower base plate 25; low-voltage power supply board 10, DSP board one 11, DSP board two 12, AD board 13, DA board 14 and computer main board 15 in sequence Installed in the positioning slot of cavity one; the rear part of cavity one is equipped with bus base plate; low-voltage power supply board 10, DSP board one 11, DSP board two 12, AD board 13, DA board 14 and the adjacent air duct board 19 There are heat conduction pads 26 between them; the low-voltage power supply board 10, DSP board one 11, DSP board two 12, AD board 13, and DA board 14 are respectively in contact with one side of the heat conduction pad 26, and the other side of the heat conduction pad 26 is in contact with the air duct plate. 19 contacts;

In the second cavity, a partition 22 is fixed in the horizontal direction, and the second partition 23 divides the second cavity into upper and lower chambers; the upper surface of the lower bottom plate 25 in the lower cavity is provided with a positioning groove, and the second partition 23 The surface is provided with positioning grooves corresponding to the upper surface of the lower base plate 25; the pre-filter board 1 5, the pre-filter board 2 6, the automatic gain control amplifier board 7, the buffer amplifier board 8 and the drive and control board 9 from left to The right is installed in the positioning slot of the lower cavity in turn; the upper cavity is used for the electrical connector 3 and the pre-filter board 1 5, the pre-filter board 2 6, the automatic gain control amplifier board 7, the buffer amplifier board 8, the drive and control The wiring layout of board 9;

A fan is installed above the cover plate 120, and a fan cover 2 is arranged on the outside of the fan; a connector mounting plate 4 is installed on the installation frame 22, and an electrical connector 3 is housed on the connector mounting plate 4; pin shafts 17 are installed on the outside of the right side plate 18 , the pin shaft 17 is used for the assembly of the box body 1 and the peripheral equipment console;

The front and rear of the cabinet 1 are respectively equipped with a panel and a backboard that match the cabinet 1;

Low-voltage power supply board 10, DSP board one 11, DSP board two 12, AD board 13, DA board 14, computer main board 15, bus bottom board are electrically connected to each other; pre-filter board one 5, pre-filter board two 6, automatic The gain control amplifier board 7 , the buffer amplifier board 8 , the drive and control board 9 , the bus backplane and the electrical connector 3 are electrically connected to each other.

Preferably, handles are respectively provided on the left side panel 24 , the right side panel 18 and the first cover panel 20 of the box body 1 .

Preferably, one end of the positioning groove in the box body 1 is provided with a chamfer.

Preferably, a slide rail 16 is provided under the bottom plate 25 of the box body 1 .

Preferably, right side plate 18, cover plate one 20, dividing plate one 21, mounting frame 22, dividing plate two 23, lower bottom plate 25 and left side plate 24 in the box body 1, as well as between the panel and the backboard by screws and Pin connection.

Preferably, the front panel and the back panel are respectively provided with sealing grooves for sealing with the box body 1 .

Preferably, the air channel plate 19 is composed of a base plate 27 and a second cover plate 28, the upper surface of the base plate 28 is processed with a rectangular through groove, the second cover plate 28 is fixedly connected to the upper surface of the base plate 27, and the rectangular through groove is perpendicular to the box body 1 The lower base plate 25, the through groove on the base plate 27 forms air channel.

The utility model includes but is not limited to the above embodiments, and any equivalent replacement or partial improvement under the principle of the spirit of the utility model will be considered within the protection scope of the utility model.

Claims (9)

1. A signal processing extension, characterized in that, said signal processing extension comprises: casing (1), electrical connector (3), connector mounting plate (4), pre-filter board, automatic gain control amplifier board (7), buffer amplifier board (8), drive and control board (9), low-voltage power supply board (10), DSP board, AD board (13), DA board (14), and computer motherboard (15); Wherein, The box body (1) includes a right side plate (18), an air channel plate (19), a cover plate one (20), a dividing plate one (21), an installation frame (22), a dividing plate two (23), a lower base plate ( 25), the left side plate (24) and the heat conduction pad (26); Left side plate (24), right side plate (18) and dividing plate one (21) are vertically fixed on the lower base plate (25), and the height of right side plate (18) and dividing plate is identical, and the height of left side plate (24) Lower than the height of right side plate (18) and partition one (21); (18), clapboard one (21) and cover plate one (20) enclose cavity one; the left side of the installation frame (22) is fixed on the upper end of the left side plate (24), and the right side is fixed on the clapboard one (21) On the top, the installation frame (22) is parallel to the lower base plate (25), and the lower base plate (25), the left side plate (24), the partition plate, and the installation frame (22) form a cavity two; The upper surface of cavity one middle and lower base plate (25) is provided with positioning groove, and the lower surface of cover plate one (20) is provided with the positioning groove corresponding to the upper surface of lower base plate (25) one by one; Outside the adjacent pair of positioning grooves, the position adjacent to each pair of positioning grooves is equipped with an air duct plate (19) perpendicular to the lower base plate (25); low-voltage power supply board (10), DSP board one (11), DSP Board two (12), AD board (13), DA board (14) and computer main board (15) are installed in the positioning groove of chamber one from left to right; Thermal pads (26) are respectively provided between the board (10), DSP board one (11), DSP board two (12), AD board (13), DA board (14) and the adjacent air duct board (19) ; Low-voltage power supply board (10), DSP board one (11), DSP board two (12), AD board (13), DA board (14) contact with heat conduction pad (26) one side respectively, heat conduction pad (26) another One side is in contact with the air channel plate (19); The second partition plate (23) is fixed horizontally in the second cavity, and the second partition board (23) divides the second cavity into upper and lower two cavities; the upper surface of the lower bottom plate (25) in the lower cavity is provided with a positioning groove , the lower surface of the partition plate two (23) is provided with positioning grooves corresponding to the upper surface of the lower base plate (25); the pre-filter plate one (5), the pre-filter plate two (6), the automatic gain control amplifier plate ( 7), the buffer amplifier board (8) and the driving and control board (9) are installed in the positioning groove of the lower cavity in sequence from left to right; A fan is installed at the position above the cover plate one (20) corresponding to the air channel plate (19) of the cavity, and a fan cover (2) is arranged on the outside of the fan; a connector mounting plate (4) is installed on the mounting frame (22) , the connector mounting plate (4) is equipped with an electrical connector (3); The front and back of the box body (1) are respectively equipped with a panel and a backboard matched with the box body (1). 2. A kind of signal processing extension according to claim 1, characterized in that, said low-voltage power supply board (10), DSP board one (11), DSP board two (12), AD board (13), DA board (14), the computer main board (15), and the bus backplane are electrically connected to each other; pre-filter board one (5), pre-filter board two (6), automatic gain control amplifier board (7), buffer amplifier board (8 ), the driver and the control board (9), the bus backplane and the electrical connector (3) are electrically connected to each other. 3. A signal processing extension according to claim 1, characterized in that, the left side plate (24), the right side plate (18) and the cover plate one (20) of the box body (1) are respectively provided with handle. 4. A signal processing extension according to claim 1, characterized in that one end of the positioning groove in the box (1) is provided with a chamfer. 5. A signal processing extension according to claim 1, characterized in that, the right side plate (18), cover plate one (20), partition plate one (21), installation frame (22), dividing plate two (23), lower bottom plate (25) and left side plate (24), and be connected by screw and pin between the panel and the backboard. 6. A signal processing extension according to claim 1, characterized in that a pin shaft (17) is installed on the outside of the right side plate (18). 7. A signal processing extension according to claim 1, characterized in that said front panel and back panel are respectively provided with sealing grooves matching with the box body (1). 8. A signal processing extension according to claim 1, characterized in that a slide rail (16) is provided under the lower bottom plate (25) of the box body (1). 9. A kind of signal processing extension according to claim 1, is characterized in that, described air duct plate (19) is made up of base plate (27) and cover plate two (28), and the upper surface of base plate (28) is processed with Rectangular through groove, the second cover plate (28) is fixedly connected to the upper surface of the base plate (27), and the through groove on the base plate (27) forms an air duct.