Control circuit for marine power supply system
By introducing a voltage divider and current limiting unit and a filter capacitor into the power supply system, electromagnetic induction current is eliminated, the problem of abnormal LED flickering is solved, and the effects of stable power supply status display and extended LED life are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-26
- Publication Date
- 2026-04-14
AI Technical Summary
In traditional marine power supply systems, the control circuit is integrated into the power supply circuit. The LED lights flicker abnormally under the influence of electromagnetic induction current, making it impossible to accurately display the power supply system status, affecting the operator's use and reducing the lifespan of the LED lights.
A voltage divider and current limiting unit and a filter capacitor are introduced between the power supply status indicator and the ground power control system. Electromagnetic induced current is eliminated by RJ23 series metal film resistors and monolithic capacitors, and the components are protected by heat shrink tubing and epoxy resin.
It achieves stable display of power supply system status, eliminates the influence of electromagnetic induction current, extends the lifespan of LED lights, and improves the stability of control circuit.
Smart Images
Figure CN121863590A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of marine power supply system technology, and discloses a control circuit for marine power supply systems. Background Technology
[0002] With the rise of maritime warfare, shipboard aircraft power supply systems have become widely used. Traditional shipboard power supply systems mostly consist only of power supply circuits, and operators cannot observe the system's operational status from the aircraft, presenting certain ergonomic shortcomings.
[0003] In newly developed marine power supply systems, the control circuit is integrated into the power supply circuit, and the LED indicator for the control circuit is integrated into the power plug housing to display the operating status of the power supply system, facilitating daily use by operators. However, during operation, especially when the power supply system is switched on or off, or when the current increases or decreases, electromagnetic induction current is generated and enters the control circuit, causing the LED indicator on the plug to flicker abnormally. This makes it impossible to confirm the operating status of the power supply system, affecting operator use and also reducing the lifespan of the LED indicator. Summary of the Invention
[0004] The purpose of this invention is to provide a control circuit for a marine power supply system, which can display the working status of the marine power supply system and improve the stability and service life of the control circuit.
[0005] To achieve the above-mentioned technical effects, the technical solution adopted by the present invention is as follows: A control circuit for a marine power supply system, comprising: A power status indicator light is installed in the aircraft-side power supply plug; the two ends of the power status indicator light are connected to the ground power control system via control lines; the power status indicator light is used to display the working status of the marine power supply system corresponding to the aircraft-side power supply plug. The voltage divider and current limiting unit has one end connected in series with the power supply status indicator light, and the other end connected to the ground power control system via a control line. A filter capacitor C is connected in parallel with the power supply status indicator light, and one end of the filter capacitor C is connected in series with the voltage divider and current limiting unit. The other end of the filter capacitor C is connected to the ground power control system through a control line.
[0006] Furthermore, the power supply status indicator is an LED light.
[0007] Furthermore, the voltage divider and current limiting unit includes a first resistor R1 and a second resistor R2. The first resistor R1 and the second resistor R2 are connected in series. The first resistor R1 is connected to the ground power control system through a control line, and the second resistor R2 is connected in series with the LED light.
[0008] Furthermore, one end of the filter capacitor C is connected to the connection point between the first resistor R1 and the second resistor R2, and the other end of the filter capacitor C is connected to the ground power control system through a control line.
[0009] Furthermore, both the first resistor R1 and the second resistor R2 are RJ23 series metal film resistors.
[0010] Furthermore, the filter capacitor C is a monolithic capacitor.
[0011] Furthermore, it also includes heat shrink tubing, which wraps the first resistor R1, the second resistor R2, and the filter capacitor C.
[0012] Furthermore, the heat shrink tubing is filled with J206 epoxy resin.
[0013] Compared with the prior art, the beneficial effects of this invention are: This invention can display the working status of the marine power supply system through the control circuit. At the same time, by adding resistors and capacitors to the control circuit, the electromagnetic induction current generated by the power supply circuit in the control circuit can be eliminated, thereby improving the stability of the control circuit and extending its service life. Attached Figure Description
[0014] Figure 1 This is a circuit diagram of the control circuit for a marine power supply system according to the present invention; Figure 2 This is an electrical schematic diagram of the control circuit for a marine power supply system according to the present invention; Among them, 1-power supply status indicator light, 2-aircraft end power supply plug. Detailed Implementation
[0015] The present invention will now be described in further detail with reference to the embodiments and accompanying drawings. However, this should not be construed as limiting the scope of the above-described subject matter of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.
[0016] See Figure 1 and Figure 2 This invention provides a control circuit for a marine power supply system. The control circuit is installed in the marine power supply system to display the operating status of the system. Simultaneously, resistors and capacitors are added to the control circuit to eliminate electromagnetic induction currents generated by the power supply circuit within the control circuit, ensuring stable operation and extending the service life of the control circuit. The marine power supply system is a ground-based power supply system for ships.
[0017] The control circuit includes a power supply status indicator light 1, a voltage divider and current limiting unit, and a filter capacitor C. The power supply status indicator light 1 is an LED light, with both ends connected to the ground power control system via control lines. The LED light is a monochrome metal indicator socket integrated into the housing of the aircraft-side power supply plug 2, used to display the operating status of the power supply system. The aircraft-side power supply plug is connected to the ground power supply system via a power supply line. Both the ground power supply system and the ground power control system are existing systems on the ship. In use, the aircraft-side power supply plug 2 is equipped with two control circuits, each integrating a green LED and a red LED. Both control circuits are connected to the ground power control system. When the ground power supply system is supplying power, the ground power control system controls the green LED to illuminate; when the ground power supply system is not operating, the ground power control system controls the red LED to illuminate.
[0018] The voltage divider and current limiting unit includes a first resistor R1 and a second resistor R2, which are connected in series. The first resistor R1 is connected to the ground power control system via a control line, and the second resistor R2 is connected in series with the LED light. Both the first resistor R1 and the second resistor R2 are RJ23 series metal film resistors, which serve as voltage dividers and also limit the current in the control circuit to prevent damage to components such as the LED light due to excessive voltage or current in the control circuit.
[0019] The filter capacitor C is a monolithic capacitor, which serves to block DC and pass AC. One end of the filter capacitor C is connected to the junction point between the first resistor R1 and the second resistor R2, and the other end of the filter capacitor C is connected to the ground power control system via a control line. For a stable DC control signal, the capacitor is essentially an open circuit after charging, preventing the DC component from passing through. For the electromagnetic induced current generated when the power supply circuit is switched on and off, this current has a certain frequency, which allows the capacitor to form a circuit, thus bypassing it and filtering out the electromagnetic induced current. This prevents the LED lights in the control circuit from flickering due to the electromagnetic induced current, extending the lifespan of the LED lights.
[0020] The control circuit of this invention uses a relatively small conductor cross-sectional area (1.5 mm²). 2 Furthermore, it is integrated with the power supply circuit in the same plug, and the power supply circuit uses a larger wire cross-sectional area (60mm²). 2 Therefore, the components in the control circuit of this invention are easily damaged. Thus, this invention wraps heat-shrink tubing around the first resistor R1, the second resistor R2, and the filter capacitor C and performs blow-shrink protection. Then, J206 epoxy resin is used for potting protection inside the heat-shrink tubing. The potting area must cover the solder joints of the components to improve the reliability of the control circuit.
[0021] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.
Claims
1. A control circuit for a marine power supply system, characterized in that, include: Power supply status indicator (1), wherein the power supply status indicator (1) is installed in the power supply plug at the aircraft end; The two ends of the power supply status indicator (1) are connected to the ground power control system via control lines; the power supply status indicator (1) is used to display the working status of the marine power supply system corresponding to the aircraft power supply plug (2); The voltage divider and current limiting unit is connected in series with the power supply status indicator (1) at one end and connected to the ground power control system through a control line at the other end. The filter capacitor C is connected in parallel with the power supply status indicator (1), and one end of the filter capacitor C is connected in series with the voltage divider and current limiting unit. The other end of the filter capacitor C is connected to the ground power control system through a control line.
2. The control circuit according to claim 1, characterized in that, The power supply status indicator (1) is an LED light.
3. The control circuit according to claim 2, characterized in that, The voltage divider and current limiting unit includes a first resistor R1 and a second resistor R2. The first resistor R1 and the second resistor R2 are connected in series. The first resistor R1 is connected to the ground power control system through a control line, and the second resistor R2 is connected in series with the LED light.
4. The control circuit according to claim 3, characterized in that, One end of the filter capacitor C is connected to the connection point between the first resistor R1 and the second resistor R2, and the other end of the filter capacitor C is connected to the ground power control system through a control line.
5. The control circuit according to claim 4, characterized in that, The first resistor R1 and the second resistor R2 are both RJ23 series metal film resistors.
6. The control circuit according to claim 5, characterized in that, The filter capacitor C is a monolithic capacitor.
7. The control circuit according to claim 6, characterized in that, It also includes heat shrink tubing, which wraps the first resistor R1, the second resistor R2 and the filter capacitor C.
8. The control circuit according to claim 7, characterized in that, The heat shrink tubing is filled with J206 epoxy resin.