Underwater platform power supply management and control system

Abstract

The invention belongs to the field of power management and control equipment, and particularly relates to an underwater platform power management and control system, which comprises a power conversion circuit, a data processing circuit, a driving circuit and a power output circuit, and is characterized in that the power conversion circuit outputs voltage for maintaining the operation of the management and control system, and the data processing circuit processes and controls signals; the driving circuit sends a driving instruction to the power output circuit according to an instruction of the data processing circuit, and an output end of the power output circuit is electrically connected with underwater platform equipment. Comprising two DC-DC isolation power supply modules K2 and K6 which are respectively connected with a related filter circuit to form a dual-redundancy output circuit, a DC input power supply + 28V is converted into + 5V and + 5V1, and the + 5V voltage is directly reduced to + 3.3 V through a three-terminal regulator K5. According to the invention, the circuit conversion reliability of the product is improved, communication mode redundancy in the scheme is optimized, and the use requirements of underwater platform equipment are better met.

Description

Technical Field

[0001] The present invention belongs to the field of power supply management and control equipment, and specifically refers to an underwater platform power supply management and control system. Background Art

[0002] The task of underwater platform power control is to provide power distribution function for underwater platform system, build a bridge between power supply and electrical appliances, and provide circuit channel for electrical appliances. Since the maintenance and repair of underwater equipment is relatively difficult, the reliability and maintainability of power control system are very important. Existing underwater platform power control equipment generally includes power conversion circuit, data processing circuit, drive circuit and power output circuit. The power conversion circuit outputs the voltage to maintain the operation of the control system. The data processing circuit processes and controls the signal. The drive circuit sends a drive instruction to the power output circuit according to the instruction of the data processing circuit. The output end of the power output circuit is electrically connected to the underwater platform. It has the disadvantages of single communication mode, single output of power conversion circuit, single initial state of power output circuit, etc. It cannot meet the requirements of high redundancy and high reliability of underwater platform power control. Summary of the invention

[0003] The purpose of the present invention is to provide an underwater platform power supply management and control system with high reliability and redundancy in view of the shortcomings of the prior art.

[0004] The technical solution for achieving the above-mentioned purpose includes the following contents.

[0005] A power control system for an underwater platform comprises a power conversion circuit, a data processing circuit, a drive circuit and a power output circuit. The power conversion circuit outputs a voltage for maintaining the operation of the control system. The data processing circuit processes and controls the signal. The drive circuit issues a drive instruction to the power output circuit according to the instruction of the data processing circuit. The output end of the power output circuit is electrically connected to the underwater platform equipment. The power conversion circuit adopts power isolation conversion technology, comprises two DC-DC isolation power modules K2 and K6 respectively connected to relevant filter circuits to form a dual redundant output circuit, converts a DC input power supply +28V into +5V and +5V1, and then directly reduces the +5V voltage to +3.3V through a three-terminal regulator K5.

[0006] Furthermore, the power output circuit includes solid-state relays K2, K3, transistor Q4 and photoelectric coupler Q5, the input end of the photoelectric coupler Q5 is connected to the drive circuit, the output end of the photoelectric coupler Q5 is connected to the input end of the transistor Q4, the output end of the transistor Q4 is connected to an input control end of the solid-state relay K2, and an input control end of the solid-state relay K3 is connected to the drive circuit. The power output circuit is divided into two modes: initial state conduction and initial state cutoff. The initial state conduction mode is realized by the transistor Q4 and photoelectric coupler Q5 of the front-end circuit, and the initial state cutoff mode is mainly realized by controlling the solid-state relay K3 by the drive instruction n given by the drive circuit.

[0007] Furthermore, the data processing circuit includes a single-chip microcomputer K1 and a bus circuit connected to the single-chip microcomputer K1, the bus circuit includes a CAN bus circuit and an RS232 bus circuit, the CAN bus circuit is based on the bxCAN controller that comes with the data processing circuit, and cooperates with the external CAN isolation transceiver module T1 to form a CAN bus network to achieve communication with external devices and real-time data transmission and reception, and the RS232 bus circuit is composed of an RS232 bus transceiver K8 and related circuits, which transmits instructions sent by the host computer to the data processing circuit.

[0008] When the underwater platform power supply management and control system of the present invention is working, the power supply conversion circuit outputs two 5V voltages. As an optimization, the solid-state relay in the power output circuit has two initial states of on and off, which provides one more option than the situation where the initial state of the commonly used solid-state relay is off. The power output circuit also has an anti-reverse function to protect the power supply management and control system from being damaged due to external circuit failure of the device. As an optimization, the bus circuit adopts two communication modes, CAN communication and RS232 communication, and the other communication mode can still be used if one is damaged.

[0009] Compared with the prior art, the underwater platform power supply management and control system of the present invention converts the input power supply +28V into a main and backup dual-channel +5V, thereby improving the reliability of product circuit conversion; in the optimization scheme, the initial on and off states of the solid-state relay used can be arbitrarily configured to complete various logical operations such as signal conduction and prohibition, and to achieve more complex circuit functions according to different requirements; in the optimization scheme, two communication modes are compatible for users to choose, thereby improving communication reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 This is the principle block diagram of the intelligent power supply control device for underwater platforms; Figure 2 This is the power conversion circuit block diagram of the underwater platform intelligent power control device; Figure 3 This is the block diagram of the switch quantity detection circuit of the intelligent power supply control device of the underwater platform; Figure 4 This is the data processing circuit block diagram of the underwater platform intelligent power supply control device; Figure 5 This is the bus circuit block diagram of the underwater platform intelligent power supply control device; Figure 6 This is the block diagram of the driving circuit of the intelligent power supply control device of the underwater platform; Figure 7 This is the power output circuit block diagram of the underwater platform intelligent power supply control device. DETAILED DESCRIPTION

[0011] The present invention is specifically described below with reference to the embodiments.

[0012] See also Figures 1 to 7 , an underwater platform power supply control system, including a power conversion circuit, a data processing circuit, a drive circuit and a power output circuit, the power conversion circuit outputs a voltage to maintain the operation of the control system, the data processing circuit processes and controls the signal, the drive circuit issues a drive instruction to the power output circuit according to the instruction of the data processing circuit, the output end of the power output circuit is electrically connected to the underwater platform equipment, and the power conversion circuit adopts a power isolation conversion technology, see Figure 2 , including two DC-DC isolated power supply modules K2 and K6 connected to relevant filter circuits to form a dual redundant output circuit, converting the DC input power +28V into +5V and +5V1, and then directly reducing the +5V voltage to +3.3V through the three-terminal regulator K5; the power output circuit includes solid-state relays K2, K3, transistor Q4 and photocoupler Q5, see Figure 7 The input ends of the solid-state relays K2 and K3 are connected to the DC input power supply +28V through the voltage-stabilizing diode, the output ends of the solid-state relays K2 and K3 are electrically connected to the underwater platform equipment, the input end of the photoelectric coupler Q5 is connected to the drive circuit, the output end of the photoelectric coupler Q5 is connected to the input end of the transistor Q4, the output end of the transistor Q4 is connected to the control end of the solid-state relay K2, the control end of the solid-state relay K3 is connected to the drive circuit, the power output circuit is divided into two modes: initial state conduction and initial state cutoff. The initial state conduction mode is realized by the transistor Q4 and the photoelectric coupler Q5 of the front-end circuit, and the initial state cutoff mode is mainly realized by the drive instruction n given by the drive circuit to control the solid-state relay K3; see Figure 4 The data processing circuit includes a single chip microcomputer K1 and a bus circuit connected to the single chip microcomputer K1. Figure 5The bus circuit includes a CAN bus circuit and an RS232 bus circuit. The CAN bus circuit is based on the bxCAN controller that comes with the data processing circuit, and cooperates with the external CAN isolation transceiver module T1 to form a CAN bus network to achieve communication with external devices and real-time data transmission and reception. The RS232 bus circuit is composed of an RS232 bus transceiver K8 and related circuits, which transmits the instructions sent by the host computer to the data processing circuit.

[0013] The power conversion circuit of the underwater platform power management and control system of this embodiment outputs two 5V voltages. The initial state of the solid-state relay in the power output circuit is divided into conduction and cutoff, which is one more option than the situation where the initial state of the commonly used solid-state relay is cutoff. The power output circuit also has an anti-reverse function to protect the power management and control system from damage due to external circuit failure of the device; the bus circuit adopts two communication methods CAN communication and RS232 communication, and the other communication method can still be used under the premise of one damage. Obviously, the power management and control system has stronger reliability than the existing technology, and the initial state conduction and cutoff of the solid-state relay used can be arbitrarily configured to complete various logical operations such as signal conduction and prohibition, and realize more complex circuit functions according to different requirements. It is compatible with two communication methods for users to choose, which improves the reliability of system communication, has the advantages of strong reliability and high redundancy, and is more suitable for the use requirements of underwater platform equipment.

Claims

1. An underwater platform power supply control system, comprising a power conversion circuit, a data processing circuit, a drive circuit and a power output circuit, wherein the power conversion circuit outputs a voltage to maintain the operation of the control system, the data processing circuit processes and controls the signal, the drive circuit issues a drive instruction to the power output circuit according to the instruction of the data processing circuit, and the output end of the power output circuit is electrically connected to the underwater platform equipment, characterized in that: The power conversion circuit adopts power isolation conversion technology, including two DC-DC isolation power modules K2 and K6 respectively connected to relevant filter circuits to form a dual redundant output circuit, converting the DC input power +28V into +5V and +5V1, and then directly reducing the +5V voltage to +3.3V through a three-terminal regulator K5.

2. The underwater platform power supply management and control system according to claim 1, characterized in that: The power output circuit includes solid-state relays K2, K3, transistor Q4 and photoelectric coupler Q5. The input end of the photoelectric coupler Q5 is connected to the drive circuit, the output end of the photoelectric coupler Q5 is connected to the input end of the transistor Q4, the output end of the transistor Q4 is connected to the drive end of the solid-state relay K2, and the drive end of the solid-state relay K3 is connected to the drive circuit. The power output circuit is divided into two modes: initial state conduction and initial state cutoff. The initial state conduction mode is realized by the transistor Q4 and photoelectric coupler Q5 of the front-end circuit, and the initial state cutoff mode is mainly realized by controlling the solid-state relay K3 through the drive instruction n given by the drive circuit.

3. The underwater platform power supply management and control system according to claim 1, characterized in that: The data processing circuit includes a single-chip microcomputer K1 and a bus circuit connected to the single-chip microcomputer K1. The bus circuit includes a CAN bus circuit and an RS232 bus circuit. The CAN bus circuit is based on a bxCAN controller provided by the data processing circuit and cooperates with an external CAN isolation transceiver module T1 to form a CAN bus network to realize communication with external devices and receive and send data in real time. The RS232 bus circuit is composed of an RS232 bus transceiver K8 and related circuits to transmit instructions sent by a host computer to the data processing circuit.

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