High-power high-reliability special timing power supply for polar scientific investigation ship computer

Abstract

The invention provides a high-power and high-reliability special timing power supply for a polar scientific investigation ship computer. The high-power and high-reliability special timing power supply comprises a main control circuit, an AC / DC conversion module, a main control board main and standby power supply switching circuit, a shipborne computer main and standby power supply switching circuit, a power distribution circuit, a power supply output and an external ship supply direct-current power supply, by arranging the main control circuit capable of running the Linux operating system, the stability and the reliability of the system are improved, and meanwhile, the occupied space is reduced. By introducing an external ship supply direct-current power supply, an alternating-current and direct-current dual-backup power supply architecture system is realized, and the problem of power supply interruption possibly caused by a single power supply system is effectively avoided. Secondly, the safety and the reliability of power supply are guaranteed by setting real-time on-line monitoring on voltage and current output by power supply; and finally, through sequential control of power-on and power-off of power supply output, timing startup and shutdown operation can be carried out according to a set instruction, and the flexibility of system control is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply, and in particular to a high-power and high-reliability special timing power supply for a computer of a polar research vessel. Background Art

[0002] During polar scientific expeditions, the stable operation of computer systems is crucial to the continuity of scientific expedition missions and the reliability of data. However, in the prior art, there are many deficiencies in using computers with Windows systems as the control core. First, the instability of the Windows system may cause the computer to freeze during long-term operation, thereby interrupting unattended scientific expedition missions. Secondly, the existing solutions usually use an AC to DC power supply system. Once the AC power supply is interrupted, it will seriously affect the continuity of scientific expedition missions and the reliability of data. In addition, Windows computers take up a large space, which is not conducive to the arrangement of more equipment in a limited space. Therefore, there is an urgent need for a high-power, high-reliability dedicated timing power supply that can solve the above problems. Summary of the invention

[0003] In order to solve the above problems existing in the prior art, the present invention provides a high-power and high-reliability special timing power supply for a computer of a polar research vessel.

[0004] The technical problem to be solved by the present invention is achieved through the following technical solutions:

[0005] The present invention provides a high-power and highly reliable special timing power supply for a computer of a polar research ship, comprising: a main control circuit, an AC / DC conversion module, a main control board main and standby power supply switching circuit, a shipboard computer main and standby power supply switching circuit, a power distribution circuit, a power supply output, and an external ship-supplied DC power supply;

[0006] The main control circuit is used to run the Linux operating system, control the power distribution circuit under the Linux operating system to achieve multiple independently controllable power supply outputs, and perform abnormal monitoring of the voltage and current of the power supply output and timing control of power on and off;

[0007] The AC / DC conversion module is used to convert the ship's AC 220V into DC 24V, and provide main power supply for the main control board main and standby power supply switching circuits and the shipboard computer main and standby power supply switching circuits; the main control board main and standby power supply switching circuits and the shipboard computer main and standby power supply switching circuits are also connected to an external ship-supplied DC power supply as a standby power supply;

[0008] The main control board's main and standby power supply switching circuit is used to realize real-time automatic switching of the main and standby power supplies of the main control circuit;

[0009] The main and standby power supply switching circuit of the shipboard computer is used to realize the real-time automatic switching of the main and standby power supply of the power distribution circuit;

[0010] The power distribution circuit is used to receive the timing control instructions of the main control circuit, and control the timing power on and off of the multiple power supply outputs according to the timing control instructions.

[0011] Optionally, the input end of the main control board main and standby power supply switching circuit and the input end of the shipboard computer main and standby power supply switching circuit are both electrically connected to the external ship-supplied DC power supply and the output end of the AC / DC conversion module;

[0012] The input end of the AC / DC conversion module is connected to the external ship-supplied AC 220V power;

[0013] The input end of the main control circuit is connected to the main and standby power supply switching circuit of the main control board;

[0014] The input end of the power distribution circuit is electrically connected to the output end of the main and standby power supply switching circuit of the shipboard computer and the output end of the main control circuit respectively;

[0015] The output end of the power distribution circuit is electrically connected to the multi-channel power supply output.

[0016] Optionally, the high-power and high-reliability dedicated timing power supply for a polar research vessel computer further comprises: an I / V monitoring circuit;

[0017] The input end of the I / V monitoring circuit is electrically connected to the main control circuit; the output end of the I / V monitoring circuit is connected to the multi-channel power supply output;

[0018] The main control circuit monitors the voltage and current of the power supply output for abnormalities based on the I / V monitoring circuit, and controls the power supply output to be powered on and off according to the results of the abnormal monitoring.

[0019] Optionally, the main control circuit uses STM32F407ZGT6 as the main control chip.

[0020] Optionally, the AC / DC conversion module uses a 320W TXLN320-124 industrial power supply.

[0021] Optionally, the main control board's main and standby power supply switching circuit realizes real-time automatic switching of the main and standby power supplies according to the voltage difference between the main power supply and the standby power supply.

[0022] Optionally, the switching process of the main and standby power supply of the main control board main and standby power supply switching circuit includes:

[0023] When the voltage of the main power supply is greater than the voltage of the backup power supply, the main control board main and backup power supply switching circuit adopts the main power supply;

[0024] When the voltage of the backup power supply is greater than the voltage of the main power supply, the main control board main and backup power supply switching circuit uses the backup power supply.

[0025] Optionally, the onboard computer main and standby power supply switching circuit adopts LTC4414 power P-FET controller to perform real-time automatic switching of main and standby power supplies.

[0026] Optionally, the I / V monitoring circuit is provided with: a Hall current sensor and an operational amplifier sampling circuit;

[0027] The Hall current sensor is used to monitor the current information of the power supply output in real time;

[0028] The operational amplifier sampling circuit is used to monitor the voltage information of the power supply output in real time.

[0029] Optionally, the main control circuit is further provided with an RTC clock circuit; the RTC clock circuit is used to provide a time reference for the main control circuit to realize timed power on / off operation.

[0030] The power distribution circuit module, I / V monitoring circuit, RTC clock circuit and main control circuit can also be integrated on one main control board to form a modular design for easy maintenance and upgrading.

[0031] The present invention provides a high-power and highly reliable special timing power supply for a computer on a polar research ship, comprising: a main control circuit, an AC / DC conversion module, a main control board main and standby power supply switching circuit, a ship-borne computer main and standby power supply switching circuit, a power distribution circuit, a power supply output, and an external ship-supplied DC power supply; the main control circuit is used to run a Linux operating system, control the power distribution circuit under the Linux operating system to achieve multi-channel independently controllable power supply output, and perform abnormal monitoring of the voltage and current of the power supply output and timing control of power on and off; the AC / DC conversion module is used to convert the ship-supplied AC 220V It is a DC 24V, and provides the main power supply for the main and standby power supply switching circuits of the main control board and the main and standby power supply switching circuits of the shipboard computer; the main and standby power supply switching circuits of the main control board and the shipboard computer are also connected to the external ship-supplied DC power supply as the backup power supply; the main and standby power supply switching circuit of the main control board is used to realize the real-time automatic switching of the main and standby power supply of the main control circuit; the main and standby power supply switching circuit of the shipboard computer is used to realize the real-time automatic switching of the main and standby power supply of the power distribution circuit; the power distribution circuit is used to receive the timing control instructions of the main control circuit, and control the timing power on and off of the multi-channel power supply output according to the timing control instructions. In the present invention, by setting a main control circuit that can run the Linux operating system, not only the stability and reliability of the system are improved, but also the occupied space is reduced. By introducing an external ship-supplied DC power supply, an AC and DC dual backup power supply architecture system is realized, which effectively avoids the power supply interruption problem that may be caused by a single power supply system. Secondly, by setting real-time online monitoring of the voltage and current of the power supply output, the safety and reliability of the power supply are guaranteed; finally, by controlling the timing of the power on and off of the power supply output, the timed power on and off operation can be performed according to the set instructions, which improves the flexibility of system control.

[0032] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic diagram of the structure of a high-power and highly reliable dedicated timing power supply for a polar research vessel computer provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

[0035] In order to improve the stability and reliability of the computer system of a polar research vessel and reduce the space occupied, an embodiment of the present invention provides a high-power and high-reliability dedicated timing power supply for a computer of a polar research vessel. Figure 1 The present invention provides a schematic diagram of a high-power, high-reliability, dedicated timing power supply for a computer on a polar research vessel. Figure 1 As shown, it includes: a main control circuit, an AC / DC conversion module, a main control board main and standby power supply switching circuit, a shipboard computer main and standby power supply switching circuit, a power distribution circuit, a power supply output and an external ship-supplied DC power supply.

[0036] The main control circuit is used to run the Linux operating system, control the power distribution circuit under the Linux operating system to achieve multiple independently controllable power supply outputs, and perform abnormal monitoring of the voltage and current of the power supply output and timing control of power on and off;

[0037] The AC / DC conversion module is used to convert the ship's AC 220V into DC 24V, and provide main power supply for the main control board main and standby power supply switching circuits and the shipboard computer main and standby power supply switching circuits; the main control board main and standby power supply switching circuits and the shipboard computer main and standby power supply switching circuits are also connected to an external ship-supplied DC power supply as a standby power supply;

[0038] The main control board's main and standby power supply switching circuit is used to realize real-time automatic switching of the main and standby power supplies of the main control circuit;

[0039] The main and standby power supply switching circuit of the shipboard computer is used to realize the real-time automatic switching of the main and standby power supply of the power distribution circuit;

[0040] The power distribution circuit is used to receive the timing control instructions of the main control circuit, and control the timing power on and off of the multiple power supply outputs according to the timing control instructions.

[0041] It should be noted that the external ship-supplied DC power supply generally adopts a stable power supply of DC 28V, and multiple power supply outputs are generally for multiple shipboard computers. The main control circuit also includes a data storage unit for storing preset instructions and monitoring data for subsequent analysis and processing.

[0042] In the embodiment of the present invention, the specific role of the real-time switching strategy of using AC (ship-supplied AC 220V) and DC (external ship-supplied DC power supply) dual-path main and standby power supply is:

[0043] 1. Improve power supply reliability: When the main power supply (whether AC or DC) fails or is interrupted, the system can seamlessly switch to the backup power supply to ensure continuous power supply to the equipment.

[0044] 2. Based on the switching strategy of main and standby power supplies, the downtime of the polar research vessel computer system caused by single power failure is reduced, and the reliability and stability of the overall system are improved.

[0045] 3. Enhanced system fault tolerance: By introducing different power types (AC and DC), the system can cope with more types of power failures, such as AC grid fluctuations, DC power failures, etc. This increases the system's fault tolerance, making the system more robust in the face of complex and changing power supply environments.

[0046] 4. Protect critical equipment: In the event of power fluctuations or interruptions, real-time switching strategies can protect critical equipment from damage, such as onboard computers (power supply output), etc.

[0047] In the specific implementation process, first, the AC / DC conversion unit converts the ship-supplied AC220V into a DC24V output. After the DC24V and the ship-supplied DC28V pass through the main control board main and standby power supply switching circuit, a stable main control power supply is output to power the main control circuit and the I / V monitoring circuit. At the same time, after the DC24V and the ship-supplied DC28V pass through the shipboard computer power supply switching circuit, a stable main power supply is output. Then, the main control circuit module distributes the main power supply into three independently controllable power supply outputs through the power distribution circuit module according to the preset instructions, and performs timed power on and off operations on the three power supply outputs according to the preset time of the RTC clock circuit. During the power supply process, the I / V monitoring circuit module monitors the voltage and current of each of the three power supply outputs in real time online. Once an abnormal voltage and current is detected, a control instruction is immediately issued through the main control circuit module to shut down the power supply output to ensure the safety and reliability of the power supply.

[0048] In addition, the present invention is also provided with a fault alarm module. When the I / V monitoring circuit module detects abnormal voltage and current, an alarm signal can be sent out through the fault alarm module so that timely measures can be taken to deal with the problem.

[0049] Furthermore, the fault alarm module may include: an alarm indicator light, a buzzer, and an alarm signal processing circuit. When the I / V monitoring circuit module detects abnormal voltage and current, an alarm signal is sent out through the main control circuit module. After receiving the alarm signal, the alarm signal processing circuit controls the alarm indicator light to flash and the buzzer to sound an alarm, so as to promptly remind the operator to handle the problem.

[0050] The embodiment of the present invention provides a high-power and highly reliable special timing power supply for polar research ship computers, including: a main control circuit, an AC / DC conversion module, a main control board main and standby power supply switching circuit, a shipboard computer main and standby power supply switching circuit, a power distribution circuit, a power supply output, and an external ship-supplied DC power supply. In the present invention, by setting a main control circuit that can run the Linux operating system, not only the stability and reliability of the system are improved, but also the occupied space is reduced. By introducing an external ship-supplied DC power supply, an AC / DC dual backup power supply architecture system is realized, effectively avoiding the power supply interruption problem that may be caused by a single power supply system. Secondly, by setting real-time online monitoring of the voltage and current of the power supply output, the safety and reliability of the power supply are guaranteed; finally, by controlling the timing of the power on and off of the power supply output, the timed power on and off operation can be performed according to the set instructions, thereby improving the flexibility of system control.

[0051] Furthermore, in the embodiment of the present invention, the power output can be exemplarily set to 3 channels, and each power output corresponds to a shipboard computer.

[0052] Optionally, the input end of the main control board main and standby power supply switching circuit and the input end of the shipboard computer main and standby power supply switching circuit are both electrically connected to the external ship-supplied DC power supply and the output end of the AC / DC conversion module;

[0053] The input end of the AC / DC conversion module is connected to the external ship-supplied AC 220V power;

[0054] The input end of the main control circuit is connected to the main and standby power supply switching circuit of the main control board;

[0055] The input end of the power distribution circuit is electrically connected to the output end of the main and standby power supply switching circuit of the shipboard computer and the output end of the main control circuit respectively;

[0056] The output end of the power distribution circuit is electrically connected to the multi-channel power supply output.

[0057] Optionally, the high-power and high-reliability dedicated timing power supply for a polar research vessel computer further comprises: an I / V monitoring circuit;

[0058] The input end of the I / V monitoring circuit is electrically connected to the main control circuit; the output end of the I / V monitoring circuit is connected to the multi-channel power supply output;

[0059] The main control circuit monitors the voltage and current of the power supply output for abnormalities based on the I / V monitoring circuit, and controls the power supply output to be powered on and off according to the results of the abnormal monitoring.

[0060] It can be understood that, in the embodiment of the present invention, by performing real-time online monitoring of the power supply output, the abnormal power supply channel can be closed and isolated, thereby ensuring the stability, safety and reliability of the power supply of the shipboard computer to the greatest extent.

[0061] Optionally, the main control circuit uses STM32F407ZGT6 as the main control chip.

[0062] Optionally, the AC / DC conversion module uses a 320W TXLN320-124 industrial power supply.

[0063] Optionally, the main control board's main and standby power supply switching circuit realizes real-time automatic switching of the main and standby power supplies according to the voltage difference between the main power supply and the standby power supply.

[0064] Specifically, in the embodiment of the present invention, Schottky diodes may be connected in parallel as a main control board main and standby power supply switching circuit to achieve real-time automatic switching of the main and standby power supplies of the main control board.

[0065] Optionally, the switching process of the main and standby power supply of the main control board main and standby power supply switching circuit includes:

[0066] When the voltage of the main power supply is greater than the voltage of the backup power supply, the main control board main and backup power supply switching circuit adopts the main power supply;

[0067] When the voltage of the backup power supply is greater than the voltage of the main power supply, the main control board main and backup power supply switching circuit uses the backup power supply.

[0068] Optionally, the onboard computer main and standby power supply switching circuit adopts LTC4414 power P-FET controller to perform real-time automatic switching of main and standby power supplies.

[0069] Optionally, the I / V monitoring circuit is provided with: a Hall current sensor and an operational amplifier sampling circuit;

[0070] The Hall current sensor is used to monitor the current information of the power supply output in real time;

[0071] The operational amplifier sampling circuit is used to monitor the voltage information of the power supply output in real time.

[0072] Optionally, the main control circuit is further provided with an RTC clock circuit; the RTC clock circuit is used to provide a time reference for the main control circuit to realize timed power on / off operation.

[0073] Specifically, the RTC clock circuit is usually composed of clock chips, crystal oscillators, storage and other components. The clock chip is the core part of the RTC. It uses the stable frequency signal generated by the crystal oscillator to generate the required clock frequency through frequency division and frequency multiplication circuits. The crystal oscillator has high precision and stability and is a key component to ensure accurate timing of the RTC clock circuit. The storage part is used to save time and date information so that it can be read when needed.

[0074] In the embodiment of the present invention, the main control circuit can communicate with the RTC clock circuit through a communication interface such as I2C, read the current time and set the preset time. When the preset time is reached, the RTC clock circuit triggers an interrupt signal. After receiving the interrupt signal, the main control circuit controls the power distribution circuit module to perform a timed power on / off operation according to a preset instruction.

[0075] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0076] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art can understand and implement other changes of the above disclosed embodiments by viewing the drawings and the disclosed content. In the description of the present invention, the term "comprising" does not exclude other components or steps, "one" or "an" does not exclude multiple situations, and the meaning of "multiple" is two or more, unless otherwise clearly and specifically limited. In addition, certain measures are recorded in different embodiments, but this does not mean that these measures cannot be combined to produce good results.

[0077] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the scope of protection of the present invention.

Claims

1. A high-power, high-reliability, dedicated timing power supply for computers on polar research vessels, characterized in that: include: Main control circuit, AC / DC conversion module, main control board main and standby power supply switching circuit, shipboard computer main and standby power supply switching circuit, power distribution circuit, power supply output and external ship-supplied DC power supply; The main control circuit is used to run the Linux operating system, control the power distribution circuit under the Linux operating system to achieve multiple independently controllable power supply outputs, and perform abnormal monitoring of the voltage and current of the power supply output and timing control of power on and off; The AC / DC conversion module is used to convert the ship-supplied AC 220V into DC 24V, and provide main power supply for the main control board main and standby power supply switching circuits and the ship-borne computer main and standby power supply switching circuits; the main control board main and standby power supply switching circuits and the ship-borne computer main and standby power supply switching circuits are also connected to an external ship-supplied DC power supply as a standby power supply; The main control board main and standby power supply switching circuit is used to realize real-time automatic switching of the main and standby power supplies of the main control circuit; The onboard computer main and standby power supply switching circuit is used to realize real-time automatic switching of the main and standby power supplies of the power distribution circuit; The power distribution circuit is used to receive the timing control instructions of the main control circuit, and control the timing power on and off of the multiple power supply outputs according to the timing control instructions.

2. The high-power and high-reliability dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The input end of the main control board main and standby power supply switching circuit and the input end of the shipboard computer main and standby power supply switching circuit are both electrically connected to the external ship-supplied DC power supply and the output end of the AC / DC conversion module; The input end of the AC / DC conversion module is electrically connected to an external ship-supplied AC 220V; The input end of the main control circuit is connected to the main control board main and standby power supply switching circuit; The input end of the power distribution circuit is electrically connected to the output end of the main and standby power supply switching circuit of the shipboard computer and the output end of the main control circuit respectively; The output end of the power distribution circuit is electrically connected to the multiple power supply outputs.

3. The high-power and high-reliability dedicated timing power supply for polar research ship computers according to claim 1 or 2, characterized in that: The high-power and high-reliability special timing power supply for the computer of the polar research vessel also includes: an I / V monitoring circuit; The input end of the I / V monitoring circuit is electrically connected to the main control circuit; the output end of the I / V monitoring circuit is connected to the multiple power supply outputs; The main control circuit performs abnormal monitoring of the voltage and current of the power supply output based on the I / V monitoring circuit, and performs power on and off control of the power supply output according to the result of the abnormal monitoring.

4. The high-power and high-reliability dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The main control circuit uses STM32F407ZGT6 as the main control chip.

5. The high-power and high-reliability dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The AC / DC conversion module adopts a 320W TXLN320-124 industrial power supply.

6. The high-power and high-reliability dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The main control board main and standby power supply switching circuit realizes real-time automatic switching of the main and standby power supplies according to the voltage difference between the main power supply and the standby power supply.

7. The high-power, high-reliability, dedicated timing power supply for polar research ship computers according to claim 6, characterized in that: The switching process of the main and standby power supply of the main control board main and standby power supply switching circuit includes: When the voltage of the main power supply is greater than the voltage of the backup power supply, the main control board main and backup power supply switching circuit adopts the main power supply; When the voltage of the backup power supply is greater than the voltage of the main power supply, the main control board main-backup power supply switching circuit adopts the backup power supply.

8. The high-power, high-reliability, dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The shipboard computer main and standby power supply switching circuit adopts an LTC4414 power P-FET controller to perform real-time automatic switching of the main and standby power supplies.

9. The high-power, high-reliability, dedicated timing power supply for polar research ship computers according to claim 3, characterized in that: The I / V monitoring circuit is provided with: a Hall current sensor and an operational amplifier sampling circuit; The Hall current sensor is used to monitor the current information of the power supply output in real time; The operational amplifier sampling circuit is used to monitor the voltage information of the power supply output in real time.

10. The high-power, high-reliability, dedicated timing power supply for polar research ship computers according to claim 1, characterized in that: The main control circuit is also provided with an RTC clock circuit; the RTC clock circuit is used to provide a time reference for the main control circuit to realize timed on / off operation.

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