Power supply device for laser inertial navigation equipment of naval vessel

Abstract

The invention discloses a naval vessel laser inertial navigation equipment power supply device, and relates to the technical field of military affairs, the naval vessel laser inertial navigation equipment power supply device comprises a power supply case, a UPS power supply module is arranged in the power supply case, and the UPS power supply module is switched to a battery mode to supply power to a servo power supply module, an inertial power supply module, an excitation power supply module and a programmable power supply module when external power is cut off; through reasonable configuration of filtering parameters in a plurality of output filtering units, power supply ripples are reduced, the protection capability on power supply switch noise and electromagnetic interference is enhanced, the power supply output performance quality is optimized, the servo power supply module carries out redundancy design on power supply output, the reliability of a single machine is improved, and the reliability of the single machine is improved. Two circuits which are identical in composition are connected in parallel and jointly act on an output port, when one circuit breaks down, stable operation of equipment can be guaranteed, and the excitation power supply module generates stable sine waves through a Wien bridge oscillation circuit which is jointly composed of two power amplifiers, so that the power supply device can stably work with loads for a long time.

Description

Technical Field

[0001] The invention relates to the field of military technology, in particular to a power supply device for ship laser inertial navigation equipment. Background Art

[0002] The background of the power supply unit of ship laser inertial navigation equipment lies in the increasing demand of modern navy for high-precision navigation systems. Laser inertial navigation technology provides accurate position information by combining inertial sensors and laser ranging to ensure the navigation safety of ships in complex sea conditions. As the core component of the navigation system, the stability and reliability of the power supply unit directly affect the navigation accuracy and the overall performance of the system. Therefore, the development of efficient and stable power supply units is of great significance to improving the combat capability and autonomous navigation level of ships. At the same time, it also promotes the advancement of navigation technology and promotes the modernization of naval equipment.

[0003] If the existing ship laser inertial navigation equipment power supply device is under extreme temperature, humidity or marine climate conditions, it will make it difficult to maintain stable power supply performance. When external power is lost, the power supply device is difficult to provide long-term uninterrupted power supply under high load conditions. At the same time, electromagnetic interference inside or outside the ship can easily affect the power supply signal, causing output fluctuations. Therefore, it is necessary to provide a ship laser inertial navigation equipment power supply device to solve the above-mentioned problems. Summary of the invention

[0004] In order to solve the above technical problems, a power supply device for ship laser inertial navigation equipment is provided. This technical solution solves the problem proposed in the above background technology that the existing power supply device for ship laser inertial navigation equipment will be difficult to maintain stable power supply performance under extreme temperature, humidity or marine climate conditions. When external power is lost, the power supply device is difficult to provide long-term uninterrupted power supply under high load conditions. At the same time, electromagnetic interference inside or outside the ship can easily affect the power supply signal, resulting in output fluctuations.

[0005] In order to achieve the above purpose, the technical solution adopted by the present invention is: The power supply device of ship laser inertial navigation equipment includes: A power supply chassis, wherein a UPS power supply module is arranged inside the power supply chassis; UPS power module, the UPS power module switches to battery mode to supply power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module when the external power is disconnected, and the UPS power module receives AC220V filtered by a filter from the outside when the external power is connected, and supplies power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module; An excitation power supply module receives a DC voltage output by a UPS power supply module. The DC voltage is filtered by a third input filter unit and connected to two isolated DC-DC circuits respectively. The two isolated DC-DC circuits form a third DC-DC unit. The DC28V output from both ends of the third DC-DC unit is connected in series and filtered to obtain DC±28V. The DC±28V is connected to a Wien bridge oscillation circuit for processing to obtain AC36V, which is then output by the third external output unit.

[0006] In an optional embodiment, the input end of the servo power module receives the DC27V outputted by the output end of the UPS power module, and inputs the received DC27V into the first input filter unit for filtering, inputs the filtered DC27V into the first DC-DC unit for boosting to obtain DC28V, and the first DC-DC unit transmits the boosted DC28V to the first output filter unit for filtering, and transmits the filtered current to the first external output unit; The inertial power module receives the DC27V output by the UPS power module and filters it through the second input filter unit. The filtered DC27V is input into the second DC-DC unit to obtain DC24V. The DC24V is filtered by the second output filter unit and then output by the second external output unit. The second input filter unit and the second DC-DC unit are composed of two parallel filter circuits and DC-DC circuits, and the filter circuit and the DC-DC circuit are connected in series.

[0007] In an optional embodiment, the program-controlled power supply module includes a program-controlled submodule and a power supply submodule, and the power supply submodule is composed of a fourth input filter unit, a fourth DC-DC unit, a fourth output filter unit and a fourth external output unit; The power submodule consists of an auxiliary power supply unit, an isolation voltage acquisition unit, an MCU control unit, a digital isolation unit and an RS422 isolation unit. The isolation voltage acquisition unit is provided with a first isolation voltage acquisition circuit, a second isolation voltage acquisition circuit, a third isolation voltage acquisition circuit, a fourth isolation voltage acquisition circuit and a fifth isolation voltage acquisition circuit.

[0008] In an optional embodiment, the power submodule is connected to the DC27V output by the UPS power module, and the DC27V output by the UPS power module is respectively connected to the fourth input filter unit, the fourth input filter unit and the fourth output filter unit are both composed of two filter circuits, and the fourth DC-DC unit is composed of two DC-DC circuits; the fourth output filter unit and the fourth external output unit are composed; Among them, the DC27V output by the UPS power module is filtered by the fourth input filter unit and then connected to the fourth DC-DC unit for processing to obtain DC24V, and the processed DC24V is input into the fourth output filter unit. The DC27V output by the UPS power module is also input into the auxiliary power supply unit through a filter circuit.

[0009] In an optional embodiment, the auxiliary power supply unit supplies power to the MCU control unit, the first isolation voltage acquisition circuit, the second isolation voltage acquisition circuit, the third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit; Among them, the isolated voltage acquisition circuit is composed of an isolated power supply, an isolated voltage sampling circuit and an operational amplifier circuit. The isolated power supply outputs DC3.3V and inputs the isolated voltage sampling circuit. The analog voltage signal generated by the isolated voltage sampling circuit is input into the operational amplifier circuit, and the operational amplifier circuit converts the analog voltage signal into a digital signal for output.

[0010] In an optional embodiment, the first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are connected to the two DC24V output by the fourth output filter unit through the fourth external output unit, and the digital signals output by the first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are commonly connected to the MCU control unit.

[0011] In an optional embodiment, the third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit are respectively connected to the DC28V output of the servo power module, the DC24V output of the inertial power module and the AC36V output of the excitation power module.

[0012] In an optional embodiment, the MCU control unit is electrically connected to the digital isolation unit and the RS422 isolation unit, respectively, and the MCU control unit communicates with the outside via RS422 through the RS422 isolation unit according to the technical protocol, receives instructions to control the on and off of the external power supply, and the MCU control unit controls two LED lights through the digital isolation unit to display the on and off of the external power supply.

[0013] In an optional embodiment, the UPS power supply module is composed of an input protection unit, a lightning spike suppression unit, a fifth input filter unit, a surge suppression unit, an AC-DC unit, a fifth DC-DC unit, a fifth output filter unit, a fifth external output unit, a charging unit, a battery unit and a discharge unit; When the external power supply is connected, the UPS power supply module receives the external input AC220V through the input protection unit, and the input protection unit sequentially passes the AC220V through the lightning spike suppression unit, the fifth input filter unit, the surge suppression unit, the AC-DC unit and the fifth DC-DC unit; During normal operation, the fifth DC-DC unit supplies power to the load and charges the battery unit through the charging unit.

[0014] In an optional embodiment, when the external power source is disconnected or the AC-DC unit fails, the battery unit supplies power to the load through the discharge unit.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The power supply device for ship laser inertial navigation equipment proposed in this scheme reduces power ripple, enhances the protection capability against power switch noise and electromagnetic interference, and optimizes the power output performance quality through the reasonable configuration of the filtering parameters in multiple output filtering units. The servo power supply module has a redundant design for the power output to improve the reliability of the single machine. Two circuits of the same composition are connected in parallel to the output port. When a circuit fails, the equipment can be guaranteed to run smoothly. The excitation power supply module generates a stable sine wave by using a Wien bridge oscillation circuit composed of two power amplifiers, so that the power supply device can work stably with load for a long time and the functional performance is normal. The programmable submodule part of the programmable power module collects the voltage parameters output by the servo power module, inertial power module and excitation power module. The sampling circuit is also fully isolated to reduce the risk of interference of each power supply to the control circuit. The collected voltage data communicates with the outside via RS422 according to the technical protocol, and receives instructions to control the on and off of the power supply. The programmable submodule is fully isolated, ESD protected and electromagnetic compatibility designed to enhance the anti-interference ability of the programmable power module. When working normally, the DC-DC module is used to power the load, and the charging circuit is used to charge the battery. When the AC input is disconnected or the AC-DC circuit fails, the battery is used to power the load. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a functional block diagram of the power supply device for ship laser inertial navigation equipment proposed by the present invention; Figure 2 It is a principle block diagram of the UPS power module in the present invention; Figure 3 is a principle block diagram of the servo power module in the present invention; Figure 4 It is a principle block diagram of the inertial power module in the present invention; Figure 5It is a principle block diagram of the excitation power supply module in the present invention; Figure 6 It is a principle block diagram of the programmable power supply module in the present invention; Figure 7 is a circuit schematic diagram of the output filter unit in the present invention; Figure 8 is a circuit schematic diagram of the servo power module in the present invention; Fig. 9 and Fig.10 The combination is a circuit schematic diagram of the excitation power supply module in the present invention. DETAILED DESCRIPTION

[0017] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0018] Reference Figure 1 - Fig.10 As shown, the power supply device of the ship laser inertial navigation equipment includes: A power supply chassis, wherein a UPS power supply module is provided inside the power supply chassis; UPS power module: when the external power is disconnected, the UPS power module switches to battery mode to supply power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module; when the external power is connected, the UPS power module receives AC220V filtered by the filter and supplies power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module; A servo power module, wherein the input end of the servo power module receives the DC27V outputted by the output end of the UPS power module, and inputs the received DC27V into the first input filter unit for filtering, and inputs the filtered DC27V into the first DC-DC unit for boosting to obtain DC28V, and the first DC-DC unit transmits the boosted DC28V to the first output filter unit for filtering, and transmits the filtered current to the first external output unit; Specifically, the servo power module integrates input undervoltage protection, output overvoltage, overcurrent, short circuit protection and overtemperature protection, with an MTBF of no less than 600,000 hours. It supports wide-range input, with an input voltage range of DC9V-DC40V. When the input voltage is lower than DC8V, the module is shut down. The rated output voltage of the module is DC28V, and it supports a voltage adjustment range of -20%~+10%. Through remote compensation design, the output adjustable range is DC22.4V-30.8V. Through the reasonable configuration of filter device parameters, the power ripple is reduced, the protection against power switch noise and electromagnetic interference is enhanced, and the power output performance quality is optimized. The composition structure of the inertial power module is similar to that of the servo power module, and the difference lies in the output connection method. The inertial power module receives the DC27V output by the UPS power module and filters it through the second input filter unit. The filtered DC27V is input into the second DC-DC unit to obtain DC24V. The DC24V is filtered by the second output filter unit and then output by the second external output unit. The second input filter unit and the second DC-DC unit are composed of two parallel filter circuits and DC-DC circuits, and the filter circuit and the DC-DC circuit are connected in series.

[0019] Furthermore, the output requirement of the inertial power module is 24V / 100W. The design adopts two isolated DC-DC circuits in parallel, in which the output of the inertial power module is redundantly designed. Two circuits of the same composition in the second DC-DC unit are connected in parallel to the output port. When a circuit fails, the equipment can run smoothly. The filter circuit uses mature filter design, and common-mode inductors, common-mode capacitors, and differential-mode capacitors are used to design filter circuits at the input and output ends. Through the reasonable configuration of filter device parameters, the power ripple is reduced, the protection against power switching noise and electromagnetic interference is enhanced, and the power output performance quality is optimized.

[0020] Furthermore, the excitation power module receives the DC voltage output by the UPS power module. The DC voltage is filtered by the third input filter unit and then connected to two isolated DC-DC circuits respectively. The two isolated DC-DC circuits constitute a third DC-DC unit. The DC28V output from both ends of the third DC-DC unit are connected in series and filtered to obtain DC±28V. The DC±28V is connected to the Wien bridge oscillation circuit for processing to obtain AC36V, which is then output by the third external output unit.

[0021] Specifically, the excitation power module adopts a mature solution, using a linear power amplifier and a Wien bridge oscillator circuit to achieve DC-AC conversion. The output of the excitation power module is an AC36V / 400Hz sine wave, and a Wien bridge oscillator circuit is used to generate a sine wave output. The core of the Wien bridge oscillator circuit is a linear power amplifier. By using a Wien bridge oscillator circuit composed of two power amplifiers, a stable sine wave is generated. This design has been verified by experiments and can work stably under load for a long time with normal functional performance. The Wien bridge oscillator circuit requires positive and negative power supplies (±28V) and uses two isolated DC-DC circuits. The output side of the circuit is connected in series, and the middle series point is used as a reference ground to obtain a ±28V power supply.

[0022] Further, the programmable power supply module includes a programmable submodule and a power supply submodule, and the power supply submodule is composed of a fourth input filter unit, a fourth DC-DC unit, a fourth output filter unit and a fourth external output unit; The power submodule consists of an auxiliary power supply unit, an isolation voltage acquisition unit, an MCU control unit, a digital isolation unit and an RS422 isolation unit. The isolation voltage acquisition unit is provided with a first isolation voltage acquisition circuit, a second isolation voltage acquisition circuit, a third isolation voltage acquisition circuit, a fourth isolation voltage acquisition circuit and a fifth isolation voltage acquisition circuit.

[0023] In this solution, the programmable power supply module consists of two parts: a programmable sub-module and a power sub-module. The power sub-module is mainly composed of an input filter circuit, a DC-DC module, and an output filter circuit. The filter circuit uses common-mode inductors, common-mode capacitors, and differential-mode capacitors to design filter circuits at the input and output ends. Through the reasonable configuration of filter device parameters, the power supply ripple is reduced, the protection capability against power switching noise and electromagnetic interference is enhanced, and the power supply output performance quality is optimized. Some circuits of the programmable sub-module collect the voltage parameters output by the servo power module, the inertial power module, and the excitation power module. The sampling circuit is also fully isolated to reduce the risk of interference of each power module to the programmable sub-module. The collected voltage data communicates with the outside via RS422 according to the technical protocol, and receives instructions to control the on and off of the power supply. The programmable sub-module is fully isolated, ESD protected, and electromagnetic compatibility designed to enhance the anti-interference capability of the programmable power module.

[0024] Further, the power submodule is connected to the DC27V output by the UPS power module, and the DC27V output by the UPS power module is respectively connected to the fourth input filter unit, the fourth input filter unit and the fourth output filter unit are both composed of two filter circuits, and the fourth DC-DC unit is composed of two DC-DC circuits; the fourth output filter unit and the fourth external output unit are composed; Among them, the DC27V output by the UPS power module is filtered by the fourth input filter unit and then connected to the fourth DC-DC unit for processing to obtain DC24V, and the processed DC24V is input into the fourth output filter unit. The DC27V output by the UPS power module is also input into the auxiliary power unit through a filter circuit.

[0025] Further, the auxiliary power supply unit supplies power to the MCU control unit, the first isolation voltage acquisition circuit, the second isolation voltage acquisition circuit, the third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit; Among them, the isolated voltage acquisition circuit consists of an isolated power supply, an isolated voltage sampling circuit and an operational amplifier circuit. The isolated power supply outputs DC3.3V and inputs the isolated voltage sampling circuit. The analog voltage signal generated by the isolated voltage sampling circuit is input into the operational amplifier circuit, and the operational amplifier circuit converts the analog voltage signal into a digital signal for output.

[0026] Furthermore, the first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are connected to the fourth output filter unit and the two DC24V output by the fourth external output unit, and the digital signals output by the first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are connected to the MCU control unit together.

[0027] Furthermore, the third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit are respectively connected to the DC28V output of the servo power module, the DC24V output of the inertial power module and the AC36V output of the excitation power module.

[0028] Furthermore, the MCU control unit is electrically connected to the digital isolation unit and the RS422 isolation unit respectively, and the MCU control unit communicates with the outside via RS422 through the RS422 isolation unit according to the technical protocol, receives instructions to control the on and off of the external power supply, and the MCU control unit controls two LED lights through the digital isolation unit to display the on and off of the external power supply.

[0029] Further, the UPS power module is composed of an input protection unit, a lightning spike suppression unit, a fifth input filter unit, a surge suppression unit, an AC-DC unit, a fifth DC-DC unit, a fifth output filter unit, a fifth external output unit, a charging unit, a battery unit and a discharge unit; When the external power supply is connected, the UPS power module receives the external input AC220V through the input protection unit, and the input protection unit sequentially passes the AC220V through the lightning spike suppression unit, the fifth input filter unit, the surge suppression unit, the AC-DC unit and the fifth DC-DC unit; During normal operation, the fifth DC-DC unit supplies power to the load and charges the battery unit through the charging unit.

[0030] Furthermore, when the external power source is disconnected or the AC-DC unit fails, the battery unit supplies power to the load through the discharge unit.

[0031] Specifically, when an abnormality occurs in the UPS power module, in order to protect the core components from damage, a fuse is set at the input end of the fifth DC-DC unit, and a varistor is designed for the surge suppression unit. The varistor is a voltage-limiting protection device. By utilizing the nonlinear characteristics of the varistor, when an overvoltage appears between the two poles of the varistor, the varistor can clamp the voltage at a relatively fixed voltage value, thereby protecting the subsequent circuit. A 620V-385V-4.5Ka varistor can be selected for protection, and a bidirectional TVS tube is designed at the AC input end to suppress the spike interference of the AC power grid.

[0032] Reference Figure 7As shown, both AC input power and DC input power use switching power supply modules. Switching power supply modules have the advantages of small size, high power density, and input-output isolation. However, the switching power supply module will have switching noise and ripple voltage of different amplitudes on the output DC voltage, which needs to be suppressed by external measures. The usual filtering measures are mainly electrolytic capacitors, multilayer ceramic capacitors and Y capacitors. Through the use and test of other projects in the early stage, common-mode inductors have a better effect on suppressing common-mode interference signals. The use of π-type filtering circuit can suppress the ripple voltage and noise of the switching power supply to within 0.5% of the output voltage, which can meet the requirements specified in the technical agreement.

[0033] In summary, the advantages of the present invention are: after the AC input enters the power supply device, it is first filtered by the filter, and then directly supplies power to the UPS power supply after leaving the filter. The UPS completes the AC-DC conversion and uninterruptible power supply functions. The DC power converted by the UPS is used to supply power to the servo power supply, inertial power supply, excitation power supply and program-controlled power supply. The UPS power supply has an uninterruptible power supply function. When the external 220V power supply is disconnected, the internal battery of the UPS can maintain uninterruptible power supply for a certain period of time.

[0034] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A power supply device for ship laser inertial navigation equipment, characterized in that: include: A power supply chassis, wherein a UPS power supply module is arranged inside the power supply chassis; UPS power module, the UPS power module switches to battery mode to supply power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module when the external power is disconnected, and the UPS power module receives AC220V filtered by a filter from the outside when the external power is connected, and supplies power to the servo power module, the inertial power module, the excitation power module and the program-controlled power module; An excitation power supply module receives a DC voltage output by a UPS power supply module. The DC voltage is filtered by a third input filter unit and connected to two isolated DC-DC circuits respectively. The two isolated DC-DC circuits form a third DC-DC unit. The DC28V output from both ends of the third DC-DC unit is connected in series and filtered to obtain DC±28V. The DC±28V is connected to a Wien bridge oscillation circuit for processing to obtain AC36V, which is then output by the third external output unit.

2. The power supply device for ship laser inertial navigation equipment according to claim 1, characterized in that: The input end of the servo power module receives the DC27V outputted by the output end of the UPS power module, and inputs the received DC27V into the first input filter unit for filtering, and inputs the filtered DC27V into the first DC-DC unit for boosting to obtain DC28V, and the first DC-DC unit transmits the boosted DC28V to the first output filter unit for filtering, and transmits the filtered current to the first external output unit; The inertial power module receives the DC28V output by the UPS power module and filters it through the second input filter unit. The filtered DC27V is input into the second DC-DC unit to obtain DC24V. The DC24V is filtered by the second output filter unit and then output by the second external output unit. The second input filter unit and the second DC-DC unit are composed of two parallel filter circuits and DC-DC circuits, and the filter circuit and the DC-DC circuit are connected in series.

3. The power supply device for ship laser inertial navigation equipment according to claim 2 is characterized in that: The program-controlled power supply module includes a program-controlled submodule and a power supply submodule, and the power supply submodule is composed of a fourth input filter unit, a fourth DC-DC unit, a fourth output filter unit and a fourth external output unit; The power submodule consists of an auxiliary power supply unit, an isolation voltage acquisition unit, an MCU control unit, a digital isolation unit and an RS422 isolation unit. The isolation voltage acquisition unit is provided with a first isolation voltage acquisition circuit, a second isolation voltage acquisition circuit, a third isolation voltage acquisition circuit, a fourth isolation voltage acquisition circuit and a fifth isolation voltage acquisition circuit.

4. The power supply device for ship laser inertial navigation equipment according to claim 3 is characterized in that: The power submodule is connected to the DC27V output by the UPS power module, and the DC27V output by the UPS power module is respectively connected to the fourth input filter unit, the fourth input filter unit and the fourth output filter unit are both composed of two filter circuits, and the fourth DC-DC unit is composed of two DC-DC circuits; The fourth output filter unit and the fourth external output unit are composed; Among them, the DC27V output by the UPS power module is filtered by the fourth input filter unit and then connected to the fourth DC-DC unit for processing to obtain DC24V, and the processed DC24V is input into the fourth output filter unit. The DC27V output by the UPS power module is also input into the auxiliary power supply unit through a filter circuit.

5. The power supply device for ship laser inertial navigation equipment according to claim 4, characterized in that: The auxiliary power supply unit supplies power to the MCU control unit, the first isolation voltage acquisition circuit, the second isolation voltage acquisition circuit, the third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit; Among them, the isolated voltage acquisition circuit is composed of an isolated power supply, an isolated voltage sampling circuit and an operational amplifier circuit. The isolated power supply outputs DC3.3V and inputs the isolated voltage sampling circuit. The analog voltage signal generated by the isolated voltage sampling circuit is input into the operational amplifier circuit, and the operational amplifier circuit converts the analog voltage signal into a digital signal for output.

6. The power supply device for ship laser inertial navigation equipment according to claim 5, characterized in that: The first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are connected to the two DC24V output by the fourth output filter unit through the fourth external output unit, and the digital signals output by the first isolation voltage acquisition circuit and the second isolation voltage acquisition circuit are commonly connected to the MCU control unit.

7. The power supply device for ship laser inertial navigation equipment according to claim 6, characterized in that: The third isolation voltage acquisition circuit, the fourth isolation voltage acquisition circuit and the fifth isolation voltage acquisition circuit are respectively connected to the DC28V output of the servo power module, the DC24V output of the inertial power module and the AC36V output of the excitation power module.

8. The power supply device for ship laser inertial navigation equipment according to claim 7, characterized in that: The MCU control unit is electrically connected to the digital isolation unit and the RS422 isolation unit respectively, and the MCU control unit communicates with the outside via RS422 through the RS422 isolation unit according to the technical protocol, receives instructions to control the on and off of the external power supply, and the MCU control unit controls two LED lights through the digital isolation unit to display the on and off of the external power supply.

9. The power supply device for ship laser inertial navigation equipment according to claim 8, characterized in that: The UPS power supply module is composed of an input protection unit, a lightning spike suppression unit, a fifth input filter unit, a surge suppression unit, an AC-DC unit, a fifth DC-DC unit, a fifth output filter unit, a fifth external output unit, a charging unit, a battery unit and a discharge unit; When the external power supply is connected, the UPS power supply module receives the external input AC220V through the input protection unit, and the input protection unit sequentially passes the AC220V through the lightning spike suppression unit, the fifth input filter unit, the surge suppression unit, the AC-DC unit and the fifth DC-DC unit; During normal operation, the fifth DC-DC unit supplies power to the load and charges the battery unit through the charging unit.

10. The power supply device for ship laser inertial navigation equipment according to claim 9, characterized in that: When the external power source is disconnected or the AC-DC unit fails, the battery unit supplies power to the load through the discharge unit.

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