Power supply module circuit of underwater acoustic signal processor

Abstract

The utility model belongs to the technical field of power supply circuits, and discloses a power supply module circuit of an underwater acoustic signal processor, which is characterized in that a connector communicated with an external power supply circuit is embedded in the upper surface of an interface power supply board; a power conversion circuit is integrated on the surface of the interface power panel and comprises a 14V output circuit, a 5.5 V output circuit, a 3.3 V output circuit and a 12V output circuit; the interface power supply board is integrated with a protection circuit, and the protection circuit comprises a short circuit protection circuit, an overcurrent protection circuit, a high temperature protection circuit and an anti-reverse connection protection circuit. The power conversion circuit comprises various output circuits of 14V, 5.5 V, 3.3 V, 12V and the like, so that the power supply requirements of different circuits and assemblies in the underwater acoustic signal processor can be met. And each circuit has specific voltage output, so that each part in the equipment can be ensured to obtain correct and stable power supply.

Description

Technical Field

[0001] The utility model belongs to the technical field of power supply circuits, and in particular relates to a power supply module circuit of an underwater acoustic signal processor. Background Art

[0002] The power module circuit is a key component of the underwater acoustic signal processor. The working environment of the underwater acoustic signal processor is usually complex, especially in the underwater environment, which is affected by various physical and chemical factors, including temperature, pressure, salinity, and underwater biological activities. These factors may cause problems such as high noise in the power circuit, unstable power supply, and reduced electrical performance of the interface, which in turn affects the overall performance of the underwater acoustic signal processor. Therefore, the power module circuit needs to have high stability and reliability to ensure that the underwater acoustic signal processor can work normally in various harsh environments.

[0003] The problems and defects of the power module circuit of the underwater acoustic signal processor in the prior art are:

[0004] 1. Usually, the power circuit and the interface circuit are separated, which makes the connection part susceptible to corrosion and loosening when working underwater;

[0005] Second, using a single power conversion chip, the power supply step-down conversion efficiency and power supply self-noise control cannot be taken into account at the same time. Utility Model Content

[0006] In order to overcome the problems existing in the related art, the disclosed embodiment of the utility model provides a power module circuit of an underwater acoustic signal processor.

[0007] The technical solution of the utility model is as follows:

[0008] A power module circuit of an underwater acoustic signal processor is provided with: an interface power board;

[0009] The upper surface of the interface power board is embedded with a connector connected to an external power supply circuit;

[0010] The interface power board surface is integrated with a DC power conversion circuit consisting of a switching power chip, and the power conversion circuit includes a 14V output circuit, a 5.5V output circuit, a 3.3V output circuit and a 12V output circuit.

[0011] In one embodiment, the interface power board is integrated with a protection circuit, and the protection circuit includes a short circuit protection circuit, an overcurrent protection circuit, a high temperature protection circuit and an anti-reverse connection protection circuit.

[0012] In one embodiment, the interface power board is connected to an external power supply using a J30-25ZKN connector and is connected to a signal acquisition terminal of an underwater acoustic signal processor using a J30-15ZKN connector, and both sets of connectors are metal reinforced.

[0013] In one embodiment, the power conversion circuit uses a low-noise TPS54540 switching power supply chip.

[0014] In combination with all the above technical solutions, the beneficial effects of the utility model are as follows:

[0015] The power conversion circuit in the utility model includes multiple output circuits such as 14V, 5.5V, 3.3V and 12V, which can meet the power supply requirements of different circuits and components in the underwater acoustic signal processor. Each circuit has a specific voltage output, which can ensure that each part of the device can get a correct and stable power supply.

[0016] The interface power board in the utility model integrates multiple protection circuits, including short circuit protection, overcurrent protection, high temperature protection and reverse connection protection. These protection measures can respond quickly when an abnormality occurs in the power circuit, cut off the power supply or adjust the current, thereby preventing dangerous situations such as equipment damage or fire.

[0017] The utility model adopts TPS54540 switching power supply chip and low noise LDO power supply chip, so that the power conversion efficiency is high and the output is stable. The switching power supply chip has the characteristics of fast response and efficient conversion, while the low noise LDO power supply chip can ensure the output voltage is stable and the noise is low.

[0018] The design of the entire power module circuit in the utility model is concise and clear, and the connector on the interface power board can be easily connected to the external power supply circuit, so that the power module is easy to integrate into the underwater acoustic signal processor. At the same time, the modular design also makes maintenance and replacement easier.

[0019] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] Figure 1 It is a schematic diagram of the topological structure of the power module circuit of the underwater acoustic signal processor provided by the embodiment of the utility model;

[0022] Figure 2This is a connection schematic diagram of the TPS54540 switching power supply chip provided by the embodiment of the utility model;

[0023] Figure 3 It is a connection principle diagram of the J30-15ZKN connector provided by an embodiment of the utility model;

[0024] Figure 4 It is a connection principle diagram of the J30-25ZKN connector provided by an embodiment of the utility model;

[0025] Figure 5 It is a schematic diagram of connecting a main control expansion board provided in an embodiment of the utility model. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model is described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the utility model. However, the utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the utility model, so the utility model is not limited by the specific implementation disclosed below.

[0027] The interface power board in the power module circuit of the underwater acoustic signal processor provided by the embodiment of the utility model has a connector connected to the external power supply circuit embedded on the surface, and at the same time, corresponding power conversion circuits are integrated according to the voltage and current requirements of different functional modules, and corresponding protection circuits are also integrated to ensure the stability of the power conversion circuit functions;

[0028] like Figure 1 As shown, the surface of the interface power board is integrated with a DC power conversion circuit consisting of a switching power chip. The power conversion circuit includes a 14V output circuit, a 5.5V output circuit, a 3.3V output circuit and a 12V output circuit, supports an input voltage of 4.5 to 42V, a maximum operating current of 5A, and a power conversion efficiency of up to 93%.

[0029] like Figure 2-Figure 5 As shown, the power conversion module circuit is built based on the step-down chips TPS54540 and LGS5148. The platform input power is connected to the input pin and enable pin of the chip respectively, and the output pins output the corresponding conversion voltage respectively. The remaining pins of the chip are connected as shown in the schematic diagram according to the circuit design requirements.

[0030] Preferably, the interface power board in the embodiment of the utility model is integrated with a protection circuit, which includes a short-circuit protection circuit, an overcurrent protection circuit, a high-temperature protection circuit and an anti-reverse connection protection circuit.

[0031] Preferably, the interface power board in the embodiment of the utility model adopts a J30-25ZKN connector to connect to an external power supply, and adopts a J30-15ZKN connector to connect to the signal acquisition end of the underwater acoustic signal processor. Both sets of connectors are metal reinforced and their performance meets the requirements of "GJB2446".

[0032] The power conversion circuit in the utility model adopts low-noise TPS54540 and LGS5148 switching power supply chips, both of which have the advantages of high switching efficiency, stable performance, and high cost performance. The platform power supply is divided into two paths and input to TPS54540 and LGS5148 respectively. When the input voltage is 28V, after passing through the TPS54540 device, 5.5V (conversion efficiency 85%) is output, and 3.3V (conversion efficiency 80%) is led out from the main control processing module; after passing through the LGS5148 device, 14V (conversion efficiency 90%) is output. After passing through the low-noise TL1963A LDO chip 78L12, 0.2A low-noise constant current output (power supply noise ≤ 40uV) is achieved.

[0033] The power module circuit provided by the embodiment of the utility model is a single +12V power supply for the hydrophone. The +12V power supply for the vector hydrophone is realized by +14V through the LDO power chip 78L12. The output ripple is 80uV in the frequency range of 10Hz to 100kHz, and the conversion efficiency is 86%.

[0034] The +5V power supply for the vector hydrophone and the amplifier and filter circuits is realized by +5.5V through the LDO power supply chip SGM2028-ADJ. The output ripple is 30uV in the frequency range of 10Hz to 100kHz, and the conversion efficiency is 91%.

[0035] The +3.3V power supply of the ADC sampling circuit is realized by +5.5V through the LDO power chip ME6301-3.3, with an output ripple of 10uV in the frequency range of 10Hz to 100kHz and a conversion efficiency of 60%.

[0036] The working principle of the utility model is as follows: the external power supply is connected to the power module through the J30-25ZKN connector on the interface power board, and the power conversion circuit starts to work. When the external power input is 28V, the input voltage is converted into 5.5V and 14V respectively through the TPS54540 and LGS5148 chips, wherein the output 14V passes through the LDO constant current power chip 78L12 to achieve a 12V low-noise constant current regulated output for the hydrophone, which can effectively suppress power supply interference and improve the signal-to-noise ratio of the hydrophone; the output 5.5V is used to power the acquisition module and the main control processing module respectively, wherein the 5.5V output is converted by the main control processing module LDO chip ME6301-3.3 to output 3.3V to power the ADC sampling circuit, and the output is converted by the LDO power chip SGM2028-ADJ to output 5V to power the vector hydrophone and the amplification and filtering circuits.

[0037] In order to ensure the stable and safe operation of the entire power module circuit, the utility model also integrates a protection circuit, including a short circuit protection circuit, an overcurrent protection circuit, a high temperature protection circuit and an anti-reverse connection protection circuit. The protection circuit continuously monitors the working status of the power module, including parameters such as current, voltage and temperature. If the protection circuit detects an abnormal situation (such as short circuit, overcurrent, high temperature or reverse connection), it will immediately trigger corresponding protection measures, such as cutting off the power supply or adjusting the current, to prevent equipment damage or danger. Under normal working conditions, the power module continuously and stably outputs electrical energy at the required voltage level to ensure the stable operation of the underwater acoustic signal processor.

[0038] In the description of the present invention, unless otherwise specified, "multiple" means two or more; the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third" and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0039] The above description is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited thereto. Any modification, equivalent substitution and improvement made by any technician familiar with the technical field within the technical scope disclosed by the present invention and within the spirit and principle of the present invention shall be covered by the protection scope of the present invention.

Claims

1. A power module circuit of an underwater acoustic signal processor, characterized in that: The circuit comprises an interface power board, on the upper surface of which a connector connected to an external power supply circuit is embedded; The interface power board surface is integrated with a DC power conversion circuit consisting of a switching power chip, and the power conversion circuit includes a 14V output circuit, a 5.5V output circuit, a 3.3V output circuit and a 12V output circuit.

2. The power module circuit of the underwater acoustic signal processor according to claim 1, characterized in that: The interface power board is integrated with a protection circuit, which includes a short circuit protection circuit, an overcurrent protection circuit, a high temperature protection circuit and an anti-reverse connection protection circuit.

3. The power module circuit of the underwater acoustic signal processor according to claim 1, characterized in that: The interface power board is connected to the external power supply using a J30-25ZKN connector, and is connected to the signal acquisition end of the underwater acoustic signal processor using a J30-15ZKN connector. Both sets of connectors are metal reinforced.

4. The power module circuit of the underwater acoustic signal processor according to claim 1, characterized in that: The power conversion circuit adopts the low-noise TPS54540 switching power supply chip.

Images