A marine fishery multi-spectral lamp control system and method

Abstract

This invention discloses a control system and method for multispectral marine fishing lights, including a centralized power supply module and a light source array module. The centralized power supply module further includes a multi-circuit power distribution unit and several charging units. The charging units are grouped and controlled for current sharing via a CAN bus. The multi-circuit power distribution unit automatically shares current to the array circuits. The lights communicate with an RS-485 bus network to obtain dimming commands and execute multispectral PWM dimming based on these commands. Centralized AC-DC conversion followed by constant power driving by the charging units significantly reduces the size, weight, and heat dissipation pressure of a single lamp, significantly improves overall power conversion efficiency, and eliminates low power factor and harmonic interference problems on the AC side. Independent power distribution and automatic current sharing operation for each circuit greatly improve overall reliability and fault tolerance. Multispectral PWM power constraint control enables precise multispectral regulation; under any dimming strategy, the total power will not exceed the heat dissipation constraint, preventing overheating and damage.

Description

Technical Field

[0001] This invention relates to the field of lighting control and marine lighting technology, and in particular to a control system and method for multispectral marine fishing lighting. Background Technology

[0002] Fish-attracting lights are the core equipment for light-attracting fishing. They emit light of specific wavelengths and intensities to attract phototactic fish (such as squid and saury). The combination of light wavelengths, light intensity, and illumination range directly affect the fishing efficiency. Therefore, there are corresponding requirements for the performance of fish-attracting lights, such as their spectrum, power, and beam angle.

[0003] Currently, most fish-attracting lights are powered by the AC output from the marine engine. Each fish-attracting light has a built-in AC-DC conversion module to convert the AC power to DC power to drive the LED light source. This results in a large size and weight of the light body. At the same time, the heat generated by the AC-DC conversion module and the LED light source is superimposed, leading to high heat dissipation pressure and affecting the lifespan of the fish-attracting light. When a fishing boat is equipped with dozens or even hundreds of fish-attracting lights, the parallel connection of multiple lights leads to a low power factor and severe harmonic interference on the AC side. In addition, each AC-DC conversion module has conversion losses, resulting in low overall power efficiency.

[0004] In addition, in terms of overall management, existing fish-attracting lamp dimming solutions typically only support single-channel brightness adjustment for all fish-attracting lamps, lacking independent and precise control over the multispectral range. Furthermore, the dimming process does not take heat dissipation constraints into account, posing a risk of overheating and damage. Summary of the Invention

[0005] Embodiment 1 of the present invention discloses a marine fishing multispectral lighting control system, specifically including: Centralized power supply module and light source array module; The centralized power supply module converts the AC power of the marine engine into DC power. The centralized power supply module also includes a multi-circuit power distribution unit and several charging units operating in parallel. The light source array module is composed of several array circuits, and several lamps are connected in parallel in each array circuit. The charging units perform group current sharing control based on the CAN bus, and the charging units automatically supply power to each array circuit through the multi-circuit power distribution unit. Each of the lamps is connected to an RS-485 bus communication network to obtain dimming commands, and each of the lamps has at least two light-emitting units with different spectra; The dimming command includes PWM duty cycle signals corresponding to different spectra, and multispectral PWM dimming is performed on the light source array module based on the dimming command; For any of the light-emitting units, there exists PWM_n = D_total × [D_n × (P_n / ΣP)]; Wherein, PWM_n represents the PWM output duty cycle of the nth spectral channel corresponding to the light-emitting unit, D_total represents the total dimming value, P_n represents the rated maximum power of the nth spectral channel corresponding to the light-emitting unit, and ΣP is the sum of the maximum power of all spectral channels.

[0006] As an optional implementation, each of the charging units is grouped based on the CAN bus, and automatic current sharing control is performed on the array circuits in the same group.

[0007] As an optional implementation, when any lamp in the array circuit fails, automatic current sharing control is triggered for the remaining normally operating lamps.

[0008] As an optional implementation, based on the spectral information contained in the production information of the lamp and the corresponding arrangement order, the spectral channel corresponding to each light-emitting unit in the lamp is mapped to the PWM output port corresponding to the RS-485 bus communication network; And, the lamps are assembled according to the arrangement order.

[0009] As an optional implementation, a unique code is generated for each lamp; Based on the unique code and test data of the lamp, generate an outbound QR code; Scan the outbound QR code to specify the installation information for the lamp corresponding to the outbound QR code.

[0010] As an optional implementation, the charging unit has a rated efficiency greater than 95%, a constant power output voltage range of DC300V-DC1000V, an input-side total harmonic distortion of no more than 5%, and a power factor of no less than 0.99. A single charging unit can support the parallel operation of no more than 60 lamps.

[0011] As an optional implementation, a continuous zoom component is assembled on the light source array module; The continuous zoom assembly is used to drive the lens assembly to move along the optical axis to change the distance between the lens assembly and the lamp, thereby adjusting the beam angle of the emitted beam.

[0012] As an optional implementation, the target angle signal in the dimming command is read, the target angle signal is converted into the target pulse count of the stepper motor in the continuous zoom component, and then written into the register of the stepper motor before starting operation.

[0013] As an optional implementation, when a dimming command indicating shutdown is received, the current operating parameters of the light source array module are recorded, and a memory command is generated based on the operating parameters; When the light source array module receives power, it is driven to run based on the operating parameters corresponding to the memory instruction.

[0014] Embodiment 2 of the present invention discloses a method for controlling multispectral lighting fixtures for marine fishing, characterized in that it includes: It acquires AC power from the marine engine and converts it to DC power. The DC power is then used to supply power to each lamp in parallel via the bus, and group current sharing control is performed via the CAN bus. Receive dimming command; Multispectral PWM dimming is performed on each of the lamps based on the dimming command; Focusing control is executed based on the dimming command.

[0015] Compared with the prior art, this embodiment has the following beneficial effects: 1. The AC-DC conversion is performed centrally and then the constant power is transmitted to each lamp by the charging unit to drive the lamp. The size, weight and heat dissipation pressure of a single lamp are significantly reduced, the overall power conversion efficiency is significantly improved, and the problems of low power factor and harmonic interference on the AC side are eliminated.

[0016] 2. Each circuit has independent power distribution and automatic current sharing operation, which greatly improves the overall reliability and fault tolerance.

[0017] 3. Implement multispectral PWM power constraint control to achieve precise control of the multispectral spectrum. This ensures that the total power will not exceed the heat dissipation constraint under any dimming strategy, thus avoiding overheating and damage. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this embodiment, the accompanying drawings used in the embodiment will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the system structure of a marine fishery multispectral lighting control system disclosed in Embodiment 1; Figure 2 This is a schematic diagram illustrating the principle of dynamic mapping of PWM ports in a marine fishery multispectral lighting control system disclosed in Embodiment 1; Figure 3 This is a schematic diagram of the workflow of a marine fishery multispectral lighting control method disclosed in Embodiment 2. Detailed Implementation

[0020] The technical solutions in this embodiment will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Example 1 Please see Figures 1-2 This embodiment discloses a marine fishing multispectral lighting control system, comprising: Centralized power supply module and light source array module; The centralized power supply module converts the AC power to DC power for marine engines; The centralized power supply module also includes a multi-circuit power distribution unit and several charging units operating in parallel; The light source array module consists of several array circuits, and several lamps are connected in parallel in each array circuit. Several charging units perform group current sharing control based on the CAN bus, and the charging unit automatically supplies power to each array circuit through a multi-circuit power distribution unit. Each luminaire is connected to an RS-485 bus communication network to obtain dimming commands, and each luminaire has at least two light-emitting units with different spectra; The dimming command contains PWM duty cycle signals corresponding to different spectra, and multispectral PWM dimming is performed on the light source array module based on the dimming command; For any light-emitting unit, there exists PWM_n = D_total × [D_n × (P_n / ΣP)]; Wherein, PWM_n represents the PWM output duty cycle of the nth spectral channel corresponding to the light-emitting unit, D_total represents the total dimming value, P_n represents the rated maximum power of the nth spectral channel corresponding to the light-emitting unit, and ΣP is the sum of the maximum power of all spectral channels.

[0022] Here are two multispectral dimming solutions: A. Full spectrum fully open: The total dimming value is 90%, and the individual dimming value for each spectrum is 100%.

[0023] The sum of the power of each spectrum = 1000 + 500 + 300 = 1800.

[0024] PWM_W = 90% × [100% × (1000 / 1800)] = 50% (output voltage 2.5V).

[0025] PWM_H = 90% × [100% × (500 / 1800)] = 25% (output voltage 1.25V).

[0026] PWM_C = 90% × [100% × (300 / 1800)] = 15% (output voltage 0.75V).

[0027] Verification: The sum of the output voltages 2.5 + 1.25 + 0.75 = 4.5V ≤ VCC = 5V, which is within the limit.

[0028] B. Darkening of some spectra: Total dimming value 90%, white light 100%, yellow light 50%, cyan light 50%.

[0029] PWM_W = 90% × [100% × (1000 / 1800)] = 50% (output voltage 2.5V).

[0030] PWM_H = 90% × [50% × (500 / 1800)] = 12.5% ​​(output voltage 0.625V).

[0031] PWM_C = 90% × [50% × (300 / 1800)] = 7.5% (output voltage 0.375V).

[0032] In this embodiment, the centralized power supply module directly converts the AC power of the marine engine into DC power, eliminating the need to assemble an independent AC-DC conversion module in each lamp, thus significantly reducing the size, weight, and heat dissipation pressure of a single lamp.

[0033] DC power is transmitted at constant power from the charging unit to drive each lamp, significantly improving the overall power conversion efficiency and eliminating the problems of low power factor and harmonic interference on the AC side.

[0034] Here, the AC input of the charging unit is three-phase 304VAC to 485VAC (output from the marine engine), which is filtered by EMI, rectified, power factor correction (PFC) and DC-DC converted to output constant voltage and constant current DC power.

[0035] As an optional implementation, the charging unit has a rated efficiency greater than 95%, a constant power output voltage range of DC300V-DC1000V, an input-side total harmonic distortion of no more than 5%, and a power factor of no less than 0.99. A single charging unit can support the parallel operation of up to 60 lamps.

[0036] Based on this, safety protection features such as built-in overvoltage protection, overcurrent protection, overtemperature protection, and short-circuit protection circuits can be achieved using a centralized power supply module.

[0037] Furthermore, each array circuit is independently powered based on its corresponding charging unit, and operates with automatic current sharing, which greatly improves the overall reliability and fault tolerance.

[0038] In addition, multispectral PWM power constraint control is implemented for each light-emitting unit in the lamp to achieve precise control of the multispectral spectrum. This ensures that the total power will not exceed the heat dissipation constraint under any dimming strategy, thus avoiding overheating damage.

[0039] Specifically, for the various possible light spectra (such as white light W, yellow light H, cyan light C, red light R, green light G, blue light B, etc.), independent PWM duty cycle control is performed for each.

[0040] Furthermore, based on (P_n / ΣP), the independent dimming value of a single light-emitting unit is normalized and weighted to ensure that the sum of the actual output power of each lamp in the light source array module will never exceed the product of the total dimming value and the rated total power, thus achieving total power limitation under heat dissipation constraints.

[0041] As an optional implementation, each charging unit is grouped based on the CAN bus, and automatic current sharing control is performed on the array circuits in the same group.

[0042] As an optional implementation, when any lamp in the array circuit fails, automatic current sharing control is triggered for the remaining normally operating lamps.

[0043] Here, automatic current sharing control can not only improve the stability and reliability of the system under normal use and ensure that the luminous efficacy of each lamp is consistent, but also measure voltage and current fluctuations when a lamp fails. Based on this, it can trigger automatic current sharing control for the lamp that fails and the lamp that is operating normally, so as to avoid a single faulty lamp from affecting the operation of the array and thus achieve fault self-healing.

[0044] As an optional implementation, based on the spectral information and corresponding arrangement order contained in the lamp's production information, the spectral channel corresponding to each light-emitting unit in the lamp is mapped to the PWM output port corresponding to the RS-485 bus communication network. And, assembling the lamps based on the arrangement order.

[0045] Specifically, the production information of the luminaire includes the sequential arrangement of spectral information (e.g., from left to right).

[0046] During the lamp production and testing phase, the system automatically maps the corresponding spectral channels to the output ports of PWM1, PWM2, PWM3, etc., according to the left-to-right order of the spectral information in the production information, and then connects them to the first, second, and third layers of the LED board on the lamp in the same order.

[0047] Therefore, the same hardware platform can flexibly adapt to lamps with different spectral configurations without modifying the hardware wiring, significantly improving production efficiency and eliminating the need to re-identify and allocate during each assembly and wiring process.

[0048] As an optional implementation, a unique code is generated for each lamp; Generate an outbound QR code based on the unique code and test data of the lamp; Scan the outbound QR code to specify the installation information for the corresponding lighting fixture.

[0049] Specifically, the coding rule for lighting fixtures is a multi-segment combination code, with each field connected by a separator "-", which includes the brand code, operation method code (fishing F / netting D / boating W / living L), rated power code, rated voltage code, spectrum and power parameters, luminous angle code, production date, and serial number of the day.

[0050] When it is installed in a specific area on the ship, its outbound QR code and installation information are further associated and stored.

[0051] The coding rule for installation information is: operation mode code + installation location code (left L / right R / forward F / stern T / underwater U) + serial number, which is used to identify the installation location of the lights on the hull.

[0052] Accordingly, the entire chain of production, sales and installation of lighting fixtures can be coded and recorded, and the relevant records can also be used to perform specified dimming control and can be digitally traced.

[0053] As an optional implementation, a continuous zoom component is assembled on the light source array module; The continuous zoom assembly is used to drive the lens assembly to move along the optical axis, thereby changing the distance between the lens assembly and the luminaire and adjusting the beam angle of the emitted beam.

[0054] Here, the continuous zoom component can use a stepper motor as a power source, and drive multiple lens components to move synchronously along the optical axis through mechanical synchronization mechanisms such as cams and slides, thereby changing the distance between the lens components and the lamp and thus realizing continuous adjustment of the beam angle.

[0055] As an optional implementation, the target angle signal in the dimming command is read, the target angle signal is converted into the target pulse number of the stepper motor in the continuous zoom component, and then written into the stepper motor register before starting operation.

[0056] Here, the Modbus RTU protocol register definition can be as follows: Address 0x0001 (read / write) Target position pulse count, range 0 to 65535; Address 0x0002 (read / write) Running speed pulses / second, range 1 to 10000; Address 0x0003 (read / write) Acceleration pulses / second², range 1 to 1000; Address 0x0004 (read-only) Running status, 0 = idle, 1 = running, 2 = fault, 3 = returning to zero; Address 0x0005 (read-only) Current position pulse count; Address 0x0006 (read / write) Control command, 0 = stop, 1 = start, 2 = returning to zero, 3 = emergency stop.

[0057] The system power-on initialization process is as follows: Power on → Main unit sends zero return command → Motor touches limit switch → Establishes mechanical origin → Reports readiness → Waits for focus / light adjustment command.

[0058] Focusing process: The host calculates the number of pulses corresponding to the target angle → writes to the target position register → writes the control command to start → polls the status register until completion (or reports an error when it exceeds the time limit).

[0059] Accordingly, the continuous zoom component drives the lens component to achieve focusing of the light beam emitted by the lamp, ensuring accurate response to the user's needs for the beam projection angle and projection range.

[0060] As an optional implementation, when a dimming command indicating shutdown is received, the current operating parameters of the light source array module are recorded, and a memory command is generated based on the operating parameters; When the light source array module receives power, it is driven to run based on the operating parameters corresponding to the memorized instructions.

[0061] Here, operating parameters, including spectrum, power, and beam angle, are recorded and generated into memory commands before being turned off, thus enabling memory startup. This eliminates the need to readjust all the lights on the ship every time it is turned on, significantly improving the efficiency and convenience of light-induced fishing.

[0062] Understandably, the dimming command is issued by a host computer (such as a smartphone, tablet, or console). This computer can visualize and map the light source array modules installed on the fishing boat into different zones, such as bow, stern, port, starboard, and underwater. It can also display the working status of each light in each zone in real time and support operations such as switching on / off, brightness adjustment, independent spectrum selection, precise percentage adjustment, and beam angle control. At the same time, it can detect the operating status of each light (voltage, current, power, temperature, fan speed, etc.).

[0063] Compared with the prior art, this embodiment has the following beneficial effects: 1. The AC-DC conversion is performed centrally and then the constant power is transmitted to each lamp by the charging unit to drive the lamp. The size, weight and heat dissipation pressure of a single lamp are significantly reduced, the overall power conversion efficiency is significantly improved, and the problems of low power factor and harmonic interference on the AC side are eliminated.

[0064] 2. Each circuit has independent power distribution and automatic current sharing operation, which greatly improves the overall reliability and fault tolerance.

[0065] 3. Implement multispectral PWM power constraint control to achieve precise control of the multispectral spectrum. This ensures that the total power will not exceed the heat dissipation constraint under any dimming strategy, thus avoiding overheating and damage.

[0066] Example 2 Please see Figure 3 This embodiment discloses a method for controlling multispectral marine fishing lights, characterized by comprising: It acquires AC power from the marine engine and converts it to DC power. The DC power is then used to supply power to each lamp in parallel via the bus, and group current sharing control is performed via the CAN bus. Receive dimming command; Multispectral PWM dimming is performed on each of the aforementioned luminaires based on dimming commands; Focusing control is executed based on dimming commands.

Claims

1. A control system for marine fishing multispectral lighting, characterized in that, include: Centralized power supply module and light source array module; The centralized power supply module converts the AC power of the marine engine into DC power. The centralized power supply module also includes a multi-circuit power distribution unit and several charging units operating in parallel. The light source array module is composed of several array circuits, and several lamps are connected in parallel in each array circuit. The charging units perform group current sharing control based on the CAN bus, and the charging units automatically supply power to each array circuit through the multi-circuit power distribution unit. Each of the lamps is connected to an RS-485 bus communication network to obtain dimming commands, and each of the lamps has at least two light-emitting units with different spectra; The dimming command includes PWM duty cycle signals corresponding to different spectra, and multispectral PWM dimming is performed on the light source array module based on the dimming command; For any of the light-emitting units, there exists PWM_n = D_total × [D_n × (P_n / ΣP)]; Wherein, PWM_n represents the PWM output duty cycle of the nth spectral channel corresponding to the light-emitting unit, D_total represents the total dimming value, P_n represents the rated maximum power of the nth spectral channel corresponding to the light-emitting unit, and ΣP is the sum of the maximum power of all spectral channels.

2. The marine fishing multispectral lighting control system according to claim 1, characterized in that, include: Each charging unit is grouped based on the CAN bus, and automatic current sharing control is performed on the array circuits within the same group.

3. A marine fishing multispectral lighting control system according to claim 2, characterized in that, include: When any lamp in the array circuit fails, automatic current sharing control is triggered for the remaining normally operating lamps.

4. A marine fishing multispectral lighting control system according to claim 1, characterized in that, include: Based on the spectral information and corresponding arrangement order contained in the production information of the lamp, the spectral channel corresponding to each light-emitting unit in the lamp is mapped to the PWM output port corresponding to the RS-485 bus communication network; And, the lamps are assembled according to the arrangement order.

5. A marine fishing multispectral lighting control system according to claim 4, characterized in that, include: Generate a unique code for each lamp; Based on the unique code and test data of the lamp, generate an outbound QR code; Scan the outbound QR code to specify the installation information for the lamp corresponding to the outbound QR code.

6. A marine fishing multispectral lighting control system according to claim 1, characterized in that, include: The rated efficiency of the charging unit is greater than 95%, the constant power output voltage range is DC300V-DC1000V, the total harmonic distortion on the input side is not higher than 5%, and the power factor is not lower than 0.

99. A single charging unit can support the parallel operation of no more than 60 lamps.

7. A marine fishing multispectral lighting control system according to claim 1, characterized in that, include: A continuous zoom component is assembled for the light source array module; The continuous zoom assembly is used to drive the lens assembly to move along the optical axis to change the distance between the lens assembly and the lamp, thereby adjusting the beam angle of the emitted beam.

8. A marine fishing multispectral lighting control system according to claim 7, characterized in that, include: The target angle signal in the dimming command is read, the target angle signal is converted into the target pulse count of the stepper motor in the continuous zoom component, and then written into the register of the stepper motor before starting operation.

9. A marine fishing multispectral lighting control system according to claim 7, characterized in that, include: When a dimming command indicating shutdown is received, the current operating parameters of the light source array module are recorded, and a memory command is generated based on the operating parameters; When the light source array module receives power, it is driven to run based on the operating parameters corresponding to the memory instruction.

10. A method for controlling multispectral lighting fixtures for marine fishing, characterized in that, include: It acquires AC power from the marine engine and converts it to DC power. The DC power is then used to supply power to each lamp in parallel via the bus, and group current sharing control is performed via the CAN bus. Receive dimming command; Multispectral PWM dimming is performed on each of the lamps based on the dimming command; Focusing control is executed based on the dimming command.

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