Power distribution and starting method for electric equipment of unmanned underwater vehicle

Abstract

The invention provides a power supply distribution and starting method for electric equipment of an underwater unmanned vehicle, and the method comprises the steps: connecting power equipment with a power supply distribution unit which comprises a time-delay relay, a plurality of DC contactors, and a current-limiting resistor; after the power supply distribution unit receives a soft start instruction of the power equipment, the time delay relay and the first direct current contactor are closed, so that the power supply supplies power to the power equipment through the first direct current contactor and the current limiting resistor; after the time delay relay completes the time delay of a preset time, a second direct current contactor is closed, so that a power supply supplies power to the power equipment through the second direct current contactor without passing through the current-limiting resistor; the instrument equipment is connected with the instrument power supply distribution unit, through the scheme of the instrument power supply distribution unit, isolation conversion and voltage stabilization control of an instrument power supply are achieved, and the power supply reliability of the instrument power utilization equipment is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of electrical technology for underwater unmanned vehicles, and particularly relates to a power distribution and startup method for electrical equipment used in underwater unmanned vehicles. Background Art

[0002] In order to complete its mission, an underwater unmanned vehicle needs to carry various electrical equipment, and each piece of equipment cooperates with the vehicle to achieve different functions. When multiple electrical equipment are carried on an underwater unmanned vehicle, it is very difficult to unify the power supply voltage levels. At the same time, when each electrical equipment is powered on, due to the same power supply connection head, it is easy to cause interference to other electrical equipment.

[0003] In addition, in order to meet the requirements of underwater navigation speed, an underwater unmanned vehicle often needs to carry a high-power propulsion motor. When the motor is powered on instantaneously, due to the excessive impact current, it is easy to cause motor protection or impact damage to the motor. Summary of the Invention

[0004] In view of this, the present invention provides a power distribution and startup method for electrical equipment used in underwater unmanned vehicles, including the following steps:

[0005] Connect the power equipment to the power supply distribution unit for power equipment, and the power supply distribution unit for power equipment includes a time-delay relay, a plurality of DC contactors, and a current-limiting resistor;

[0006] After the power supply distribution unit for power equipment receives the soft startup instruction of the power equipment, close the time-delay relay and the first DC contactor, so that the power supply powers the power equipment through the first DC contactor and the current-limiting resistor;

[0007] After the time-delay relay completes the preset time delay, close the second DC contactor, so that the power supply powers the power equipment through the second DC contactor without passing through the current-limiting resistor.

[0008] Particularly, the coil of the time-delay relay is connected in parallel with the coil of the first DC contactor; the coil of the second DC contactor is connected in series with the contact of the time-delay relay.

[0009] Particularly, the time delay of the time-delay relay is 3 seconds.

[0010] Particularly, the resistance value of the current-limiting resistor is 50 ohms.

[0011] Connect the instrument equipment to the power supply distribution unit for instrument equipment, and the power supply distribution unit for instrument equipment includes a plurality of DC / DC conversion modules and a plurality of relays;

[0012] Use the plurality of DC / DC conversion modules to isolate, convert, and regulate the input instrument power supply for output;

[0013] By controlling the on / off states of the multiple relays, the regulated instrument power supply is distributed and output to the corresponding multiple instrument electrical devices.

[0014] Specifically, in this method, the number of the multiple relays is the same as the number of the multiple instrument electrical devices, and each relay controls the power supply of one instrument electrical device.

[0015] Beneficial effects:

[0016] Through the instrument power supply distribution unit solution of the present invention, isolation conversion and regulated control of the instrument power supply are achieved, improving the power supply reliability of the instrument electrical devices.

[0017] By using multi-channel relay control, precise control of the power supply to different instrument devices is achieved.

[0018] The regulated power supply output can reduce the failure rate of the instrument devices and extend the service life.

[0019] The power supplies between different instruments are relatively isolated, reducing electromagnetic interference and improving signal quality.

[0020] Through the power equipment soft start control solution of the present invention, the current-limiting resistor protects against the instantaneous impact when high-power equipment is powered on. And the delay control ensures full-power supply after the bus capacitor is pre-charged.

[0021] Through the soft start of the power equipment, mechanical stress and electromagnetic stress are greatly reduced, the service life of the power equipment is extended, and the reliability of the power system is improved. Description of the Drawings

[0022] Figure 1 It is a schematic diagram of the power supply distribution and start method for the electrical devices of the underwater unmanned vehicle proposed by the present invention;

[0023] Figure 2 It is a circuit schematic diagram of the power supply distribution and start method for the electrical devices of the underwater unmanned vehicle proposed by the present invention. Detailed Embodiments

[0024] The following combines the drawings and gives embodiments to describe the present invention in detail.

[0025] The present invention provides a power supply distribution and start method for the electrical devices of an underwater unmanned vehicle.

[0026] In this method, the system power supply is distributed. After receiving the control instruction from the central controller, power-on and power-off control of each electrical device is performed. The power supply distribution unit is divided into an instrument power supply distribution unit 1 and a power power supply distribution unit 2, and the schematic diagram of the method is as Figure 1As shown in the figure. Among them, the instrument and equipment are connected to the instrument power distribution unit, and the instrument power distribution unit includes multiple DC / DC conversion modules and multiple relays. The power equipment is connected to the power supply distribution unit, and the power supply distribution unit includes a time-delay relay, multiple DC contactors, and current-limiting resistors; the circuit schematic diagram is as shown in Figure 2 shown

[0027] The instrument power distribution unit distributes the instrument power provided by the system power supply through the DC / DC power supply according to the number and power consumption requirements of the electrical equipment, isolates and stabilizes the output. After each output is connected in series to the relay, it is connected to the electrical equipment. When receiving the power-on instruction of a certain electrical equipment sent by the central processor, it controls the relay of the electrical equipment to act and delivers the power distributed by the DC / DC power supply to the electrical equipment.

[0028] After the power supply distribution unit for power equipment receives the soft start instruction of the power equipment, it closes the time-delay relay and the first DC contactor, so that the power supply powers the power equipment through the first DC contactor and the current-limiting resistor; the power supply distribution unit for power equipment connects the coil K3A of the time-delay relay K3 in parallel with the coil K4A of the DC contactor K4. The coil K5A of the DC contactor K5 is connected in series with the contact K3B of the time-delay relay and then in parallel with K3A. The contact K4B of the DC contactor K4 is connected in series with the current-limiting resistor R1 and then in parallel with the contact K5B of the DC contactor K5. The resistance value is selected according to the actual situation of the electrical equipment. In this embodiment, the resistance value is 50 ohms. When receiving the power-on instruction sent by the central processor, the coil K3A of the time-delay relay K3 is turned on, and the coil K4A of the DC contactor K4 is turned on, and then the contact K4B of K4 is turned on. The power supply passes through the loop of K4B and supplies power to the electrical equipment after passing through the current-limiting resistor.

[0029] After the time-delay relay completes the delay of the preset time, it closes the second DC contactor, so that the power supply powers the power equipment through the second DC contactor without passing through the current-limiting resistor. The contact K3B of K3 will close 3 seconds after K3 is turned on. The delay time is selected according to the actual situation of the electrical equipment. In this embodiment, the delay time is 3 seconds. When K3B is closed, the coil K5A of the DC contactor K5 is turned on, and then the contact K5B of K5 is turned on. After the loop of K5B is turned on, the power supply can supply power to the electrical equipment normally through this loop, thus realizing the process of soft starting and power-on of high-power electrical equipment.

[0030] A power supply distribution and control method for electrical equipment applicable to an underwater unmanned vehicle provided by the present invention isolates and stabilizes the control of the instrument power supply and then outputs it to the instrument electrical equipment, and controls the power supply for the power equipment with time delay soft start and then outputs it to the power electrical equipment, improving the reliability of the use of the electrical equipment and prolonging the service life of the equipment.

[0031] In summary, the above are only the preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0032] For those skilled in the art, it is obvious that the embodiments of the present invention are not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the embodiments of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the embodiments of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included within the embodiments of the present invention. Any reference signs in the claims should not be construed as limiting the claimed rights. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. The multiple units, modules or devices stated in the system, apparatus or terminal claims can also be implemented by the same unit, module or device through software or hardware. First, second, etc. are used to denote names and do not denote any particular order.

[0033] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the embodiments of the present invention and not to limit them. Although the embodiments of the present invention have been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that modifications or equivalent replacements of the technical solutions of the embodiments of the present invention should not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A power distribution and startup method for electrical equipment of an underwater unmanned vehicle, characterized in that, It includes the following steps: Connect the power equipment to the power supply distribution unit, and the power supply distribution unit includes a time-delay relay, a plurality of DC contactors, and a current-limiting resistor; After the power supply distribution unit receives the soft start instruction of the power equipment, close the time-delay relay and the first DC contactor, so that the power supply supplies power to the power equipment through the first DC contactor and the current-limiting resistor; After the time-delay relay completes the delay of the preset time, close the second DC contactor, so that the power supply supplies power to the power equipment through the second DC contactor without passing through the current-limiting resistor.

2. The power distribution and startup method for the electrical equipment of an underwater unmanned vehicle according to claim 1, characterized in that The coil of the time-delay relay is connected in parallel with the coil of the first DC contactor; the coil of the second DC contactor is connected in series with the contact of the time-delay relay.

3. The power supply distribution and start method for the electrical equipment of an underwater unmanned vehicle according to claim 1, wherein the delay time of the time-delay relay is 3 seconds.

4. The power distribution and startup method for the electrical equipment of an underwater unmanned vehicle according to claim 1, characterized in that, The resistance value of the current-limiting resistor is 50 ohms.

5. The power distribution and startup method for the electrical equipment of an underwater unmanned vehicle according to claim 1, characterized in that, Connect the instrument equipment to the instrument power supply distribution unit, and the instrument power supply distribution unit includes a plurality of DC / DC conversion modules and a plurality of relays; Use the plurality of DC / DC conversion modules to isolate and convert the input instrument power supply and output it with a stable voltage; By controlling the on and off of the plurality of relays, distribute and output the regulated instrument power supply to the corresponding plurality of instrument electrical equipment.

6. The power distribution and startup method for the electrical equipment of an underwater unmanned vehicle according to claim 3, characterized in that, In this method, the number of the plurality of relays is the same as the number of the plurality of instrument electrical equipment, and each relay controls the power supply of one instrument electrical equipment.

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