Control system of multifunctional camping lamp

Abstract

The invention discloses a control system of a multifunctional camping lamp. The control system comprises a side lamp control module, a top lamp control module and a master control module. The ceiling lamp control module comprises a touch circuit, a warm light LED circuit and an RGB unit. The master control module comprises a central processing unit and a power supply management unit, and the central processing unit is connected with a key unit, a CPU power supply unit, a lamp panel interface unit and an LED driving unit. The camping lamp has the advantages that the camping lamp is provided with four modes including the warm light illumination mode, the fireplace lamp mode, the star observation lamp mode and the rainbow mode, the four modes can be circularly switched, the brightness of the camping lamp is uniform, light spots are greatly reduced, the direct-current voltage is stable, meanwhile, the temperature of a power source can be detected, the temperature can be reliably and stably detected, and the service life of the camping lamp is prolonged. Accurate temperature data are provided for the system, corresponding safety measures can be taken according to the detected temperature, the service life of the multifunctional camping lamp is prolonged, and the safety of the multifunctional camping lamp is improved.

Description

Technical Field

[0001] The invention discloses a control system for a multifunctional camping lamp, and belongs to the technical field of electronic control systems. Background Art

[0002] With the improvement of people's living standards, the most basic food, clothing, housing and transportation can no longer meet people's pursuit of quality of life. Nowadays, people pay more and more attention to a healthy lifestyle and are more actively involved in physical exercise. Camping can be used as a form of leisure and exercise, so it is loved by many people, especially young people.

[0003] In order to make camping go smoothly and safely, a camping light is essential. A camping light is a movable lighting tool that provides lighting, scares away wild animals, indicates the location of the camp, etc.

[0004] Existing camping lights have the following disadvantages: 1. Existing camping lights have poor anti-interference capabilities, which makes the brightness of the camping lights uneven and prone to light spots, resulting in a poor user experience; 2. Existing camping lights have the disadvantage of unstable power supply, which will lead to unstable brightness and flickering of the camping lights. At the same time, the existing technology does not set power supply temperature detection, and cannot take corresponding safety measures in time when the power supply temperature is too high, which reduces the service life and safety of the camping lights; 3. Existing camping lights are not equipped with a battery protection module and cannot provide overcharge, over-discharge, overcurrent and load short-circuit protection. Summary of the invention

[0005] The technical problem to be solved by the present invention is to provide a control system for a multifunctional camping lamp in view of the above shortcomings. The control system has four modes, namely warm light lighting mode, fireplace light mode, stargazing light mode and rainbow mode. The four modes can be switched cyclically. The brightness of the camping lamp is uniform, which greatly reduces the appearance of light spots. The DC voltage is stable. At the same time, the power supply temperature can be detected, and the temperature can be detected reliably and stably to provide accurate temperature data for the system. Corresponding safety measures can be taken according to the detected temperature, thereby improving the service life and safety of the multifunctional camping lamp.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions: A control system for a multifunctional camping light, comprising a side light control module, a top light control module and a master control module; The ceiling light control module includes a touch circuit, a warm light LED circuit and an RGB unit; The master control module comprises a central processing unit and a power management unit, wherein the central processing unit is connected with a key unit, a CPU power supply unit, a light board interface unit and an LED driving unit.

[0007] Further, the touch circuit includes a chip U6, a power filter module, an interface connection module, and a touch sensing module. The model of the chip U6 is A101C. Pin 5 of the chip U6 is connected to one end of a resistor R5 and one end of a capacitor C2. Pin 6 of the chip U6 is connected to one end of a capacitor C1. The other end of the capacitor C2 and the other end of the capacitor C1 are grounded. The other end of the resistor R5 is connected to pin 3 of the interface U5 and one end of a resistor R6. The other end of the resistor R6 is connected to pin 1 of the chip U6. Pin 3 of the chip U6 is connected to one end of a resistor R7. The other end of the resistor R7 is connected to one end of a capacitor C3 and a touch spring U7. The other end of the capacitor C3 is grounded. The warm light LED circuit includes a plurality of groups of series-connected light emitting diodes and resistors arranged in parallel, the free ends of the light emitting diodes are connected to the VCC_G power supply, the free ends of the resistors are connected to the VCC_RGB power supply, and the warm light LED circuit receives the side light board signal and power supply, and as an extension of the side light board, is integrated with the side light board for control; The RGB unit includes a plurality of RGB lamp beads. The DOU end and the DIN end of two adjacent RGB lamp beads are connected. The VDD end of the RGB lamp bead is connected to the VCC_RGB power supply. It receives the serial signal line and power supply of the side light board. As an extension of the side light board, it is integrated with the side light board for control.

[0008] Furthermore, the side light control module includes several groups of series-connected light-emitting diodes and resistors arranged in parallel, the free ends of the light-emitting diodes are connected to the VCC_G power supply, the free ends of the resistors are connected to the VCC_RGB power supply, and the side light control module also includes several capacitors arranged in parallel, one end of the capacitor is connected to the VCC_RGB power supply, and the other end of the capacitor is grounded; the side light control module also includes several RGB lamp beads, the DOU end and DIN end of two adjacent RGB lamp beads are connected, the VDD end of the RGB lamp bead is connected to the VCC_RGB power supply, and the RGB lamp beads adopt a serial matrix layout.

[0009] Further, the central processing unit includes a chip U2, the model of the chip U2 is ESP32-S3R8, and the chip U2 is connected to a power supply filtering and decoupling module and a reset and key input module; the power supply filtering and decoupling module is that the 2nd and 3rd pins of the chip U2 are connected to one end of a capacitor C122 and one end of an inductor L3, the other end of the capacitor C122 is grounded, the other end of the inductor L3 is connected to one end of a capacitor C121 and one end of a capacitor C120, and connected to a 3.3V power supply, the other end of the capacitor C121 and the other end of the capacitor C120 are grounded, the reset and key input module is that the 4th pin of the chip U2 is connected to one end of a resistor R1, one end of a capacitor C107 and one end of a key SW4, the other end of the resistor R1 is connected to one end of a capacitor C105 and one end of a capacitor C106, and connected to 3.3V, the other end of the capacitor C105 and the other end of the capacitor C106 are grounded, and the other end of the capacitor C107 and the other end of the key SW4 are grounded; The chip U2 is connected to a clock oscillation module to provide a stable working clock signal for the chip U2. When the power is turned on, the crystal oscillator U4 starts to oscillate and generates a stable clock signal. This signal is further stabilized and transmitted to pins 54 and 53 of the chip U2 through the resonance of the inductor L2 and the capacitors C116 and C117. The chip U2 synchronizes internal operations according to the clock signal. The clock oscillation module is that pin 54 of the chip U2 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to one end of the capacitor C116 and pin 1 of the crystal oscillator U4, and the other end of the capacitor C116 is grounded. Pin 53 of the chip U2 is connected to pin 3 of the crystal oscillator U4 and one end of the capacitor C117. The other end of the capacitor C117 is grounded, and pins 2 and 4 of the crystal oscillator U4 are grounded.

[0010] Furthermore, the central processing unit also includes a storage chip U3, which is a storage interface module, providing an interface for data storage and reading for the central processing unit (chip U2). Pin 1 of the storage chip U3 is connected to pin 32 of the chip U2, pin 2 of the storage chip U3 is connected to pin 34 of the chip U2 through a resistor, pin 3 of the storage chip U3 is connected to pin 31 of the chip U2 through a resistor, pin 5 of the storage chip U3 is connected to pin 35 of the chip U2 through a resistor, pin 6 of the storage chip U3 is connected to pin 33 of the chip U2 through a resistor, and pin 7 of the storage chip U3 is connected to pin 30 of the chip U2 through a resistor.

[0011] Further, the power management unit includes a chip U27, and the chip U27 is connected to an energy storage filter unit and a power supply temperature detection module. The energy storage filter unit is that pins 2 to 6 of the chip U27 are connected to one end of a resistor R99, one end of an inductor L1 and one end of a capacitor C4, and the other end of the capacitor C4 is connected to pin 7 of the chip U27, the other end of the resistor R99 is connected to one end of a capacitor C5, and the other end of the capacitor C5 is grounded, and the other end of the inductor L1 is connected to one end of a capacitor C1 and one end of a capacitor C2, and connected to the positive electrode B+ of the battery, and the power supply temperature detection module is that the other end of the capacitor C1 and the other end of the capacitor C2 are connected to one end of a thermistor R98 and one end of a capacitor C3, and the other end of the thermistor R98 and the other end of the capacitor C3 are connected to pin 18 of the chip U27; The chip U27 is also connected to a power supply and ground connection module, a dual-channel MOS tube control module, and a Type-C interface connection module. Pins 29 to 33 of the chip U27 are connected to one end of a capacitor C11, one end of a capacitor C12, one end of a capacitor C13, one end of a resistor R103, and one end of a capacitor C14. The other end of the capacitor C11, the other end of the capacitor C12, and the other end of the capacitor C13 are grounded. The other end of the resistor R103 and the other end of the capacitor C14 are connected to pin 27 of the chip U27, one end of a capacitor C15, one end of a capacitor C16, pins 2 and 5 of the dual-channel MOS tube Q1, pins 2 and 5 of the dual-channel MOS tube Q2, and pins 9 and Pin 13, Pin 6 and Pin 4 of the dual-channel MOS tube Q1 are connected to Pin 36 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q1 are connected to one end of capacitor C17 and Pin 10 of chip U27, and connected to 5V, and the other end of capacitor C17 is grounded, Pin 4 and Pin 6 of the dual-channel MOS tube Q2 are connected to Pin 38 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q2 are connected to one end of capacitor C18, Pin 12 of chip U27, Pin 2 and Pin 5 of Type-C interface U35, Pin 3 of Type-C interface U35 is connected to Pin 40 of chip U27, and Pin 4 of Type-C interface U35 is connected to Pin 41 of chip U27.

[0012] Furthermore, the power management unit also includes chip U28, chip U29 and chip U30. The models of chip U28, chip U29 and chip U30 are MW9608. Pin 1 of chip U28 is connected to one end of capacitor C100 and one end of resistor R104. The other end of capacitor C100 is connected to chip U28 and pins 2 and 3, and connected to the negative electrode of the battery BAT-. The other end of resistor R104 is connected to the positive electrode B+ of the battery. Pin 1 of chip U29 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U29 are connected to the negative electrode of the battery BAT-. Pin 1 of chip U30 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U30 are connected to the negative electrode of the battery BAT-.

[0013] Further, the key unit includes a touch key interface C_KEY, pin 1 of the touch key interface C_KEY is connected to one end of a resistor R116 and to a 3.3V power supply, and the other end of the resistor R116 is connected to pin 27 of the chip U2 and pin 2 of the touch key interface C_KEY; The key unit also includes a key SW5, pin 3 of which is connected to pin 9 of chip U2, one end of resistor R113 and one end of capacitor C109, the other end of resistor R113 is connected to 3.3V, the other end of capacitor C109 and pin 1 of key SW5 are grounded, the key unit also includes a key SW2, pin 3 of which is connected to pin 10 of chip U2, one end of resistor R114 and one end of capacitor C110, the other end of resistor R114 is connected to 3.3V, the other end of capacitor C110 and pin 1 of key SW2 are grounded, the key unit also includes a key SW3, pin 3 of key SW3 is connected to pin 11 of chip U2, one end of resistor R115 and one end of capacitor C111, the other end of resistor R115 is connected to 3.3V, the other end of capacitor C111 and pin 1 of key SW3 are grounded.

[0014] Furthermore, the CPU power supply unit includes a chip U36, the model of chip U36 is iSGM2019-3.3YN5G / TR, pins 1 and 3 of chip U36 are connected to one end of capacitor C112 and to the B+ power supply, the other end of capacitor C112 is grounded, pin 5 of chip U36 is connected to one end of capacitor C113 and one end of capacitor C114 and to 3.3V, the other end of capacitor C113 and the other end of capacitor C114 are grounded.

[0015] Furthermore, the LED driving unit includes a MOS tube Q10, wherein the 4th and 6th pins of the MOS tube Q10 are connected to one end of a resistor R91 and one end of a resistor R90, the other end of the resistor R91 is grounded, and the other end of the resistor R90 is connected to an LED_S power supply, the 2nd and 5th pins of the MOS tube Q10 are connected to one end of a resistor U33, and the other end of the resistor U33 is connected to a VLED_G power supply, the MOS tube Q10 receives a CPU control signal to control the brightness of the LED lamp group, U33 is a current limiting resistor, R91 is a pull-down resistor, and R90 is a series resistor.

[0016] The present invention adopts the above technical solution, and has the following technical effects compared with the prior art: The control system of the multifunctional camping lamp described in the present invention is provided with four modes, namely warm light lighting mode, fireplace light mode, stargazing light mode and rainbow mode. The four modes can be switched cyclically. The control system is provided with a filtering circuit, so that the brightness of the camping lamp is uniform, which greatly reduces the occurrence of light spots.

[0017] The control system of the multifunctional camping lamp described in the present invention is provided with an energy storage filter circuit, which can be used to limit current, assist in voltage stabilization, and make the DC voltage more stable. At the same time, it can detect the power supply temperature, can reliably and stably detect the temperature, and provide accurate temperature data for the system. Corresponding safety measures can be taken according to the detected temperature, thereby improving the service life and safety of the multifunctional camping lamp.

[0018] The control system of the multifunctional camping lamp described in the present invention adopts a dual-channel MOS tube to control the power on and off of the Type-C interface and the lamp board. Compared with the traditional mechanical switch, this design has faster switching time and convenient control; longer life; lower loss; smaller size and almost no noise.

[0019] The control system of the multifunctional camping lamp described in the present invention is provided with a battery protection module, which can realize overcharge, over-discharge, overcurrent and load short-circuit protection, etc. The accurate overcharge detection voltage ensures safety and full charging, and the low standby current consumes very little current from the battery during storage, realizing battery reverse connection protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the specific embodiments or the description of the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn according to the actual scale.

[0021] Figure 1 It is a structural block diagram of the master control module of the present invention; Figure 2 is a circuit diagram of a touch circuit of the present invention; Figure 3 is a circuit diagram of the warm light LED circuit of the present invention; Figure 4 A circuit diagram of an RGB unit of the present invention; Figure 5 is a circuit diagram of a side light control module of the present invention; Figure 6 A circuit diagram of a central processing unit of the present invention; Figure 7 is a circuit diagram of a power management unit of the present invention; Figure 8 A circuit diagram of a CPU power supply unit of the present invention; Fig. 9 is a circuit diagram of a light board interface unit of the present invention; Fig.10 and Fig.11 A circuit diagram of a key unit of the present invention; Fig.12 FIG. 4 is a circuit diagram of an LED driving unit of the present invention. DETAILED DESCRIPTION

[0022] Embodiment, a control system of a multifunctional camping light, comprises a side light control module, a top light control module and a master control module.

[0023] like Figure 2As shown, the ceiling light control module includes a touch circuit, which includes a chip U6, a power filter module, an interface connection module, and a touch sensing module. The model of the chip U6 is A101C, and pin 5 of the chip U6 is connected to one end of a resistor R5 and one end of a capacitor C2, and pin 6 of the chip U6 is connected to one end of a capacitor C1. The other end of the capacitor C2 and the other end of the capacitor C1 are grounded, and the other end of the resistor R5 is connected to pin 3 of the interface U5 and one end of the resistor R6. The other end of the resistor R6 is connected to pin 1 of the chip U6, and pin 3 of the chip U6 is connected to one end of a resistor R7. The other end of the resistor R7 is connected to one end of a capacitor C3 and a touch spring U7, and the other end of the capacitor C3 is grounded.

[0024] Chip U6 is a low-power, highly anti-interference single-channel touch-sensing chip. Chip U6 is combined with resistors and capacitors to achieve automatic sensitivity correction, reduce system complexity and improve stability. It has an embedded common-mode interference removal circuit and built-in button U7 de-bouncing. No external software is required for de-bouncing. It has a fast response speed and can press more than 20 buttons per second.

[0025] like Figure 3 As shown, the ceiling light control module also includes a warm light LED circuit, which includes several groups of series light emitting diodes and resistors arranged in parallel. The free end of the light emitting diode is connected to the VCC_G power supply, and the free end of the resistor is connected to the VCC_RGB power supply. The warm light LED circuit receives the side light board signal and power supply, and as an extension of the side light board, is integrated with the side light board in control.

[0026] like Figure 4 As shown, the ceiling light control module also includes an RGB unit, which includes a number of RGB lamp beads. The DOU end and DIN end of two adjacent RGB lamp beads are connected, and the VDD end of the RGB lamp bead is connected to the VCC_RGB power supply, which receives the serial signal line and power supply of the side light board. As an extension of the side light board, it is integrated with the side light board for control.

[0027] like Figure 5 As shown, the side light control module includes several groups of series-connected light-emitting diodes and resistors arranged in parallel, the free end of the light-emitting diode is connected to the VCC_G power supply, the free end of the resistor is connected to the VCC_RGB power supply, and the side light control module also includes several capacitors arranged in parallel, one end of the capacitor is connected to the VCC_RGB power supply, and the other end of the capacitor is grounded, which serves as an energy storage filter circuit to improve the power supply quality and protect other components in the circuit, and can absorb power supply fluctuations and release corresponding electrical energy to maintain the stability of the power supply; the side light control module also includes several RGB lamp beads, the DOU end and DIN end of two adjacent RGB lamp beads are connected, the VDD end of the RGB lamp bead is connected to the VCC_RGB power supply, and the RGB lamp beads adopt a serial matrix layout to make the brightness uniform, greatly reduce the appearance of light spots, and the light group can be communicated and controlled through a signal line, saving resource waste.

[0028] like Figure 1 As shown, the master control module includes a central processing unit and a power management unit, and the central processing unit is connected to a button unit, a CPU power supply unit, a light board interface unit and an LED driving unit.

[0029] like Figure 6 As shown, the central processing unit includes a chip U2, and the model of the chip U2 is ESP32-S3R8. The chip U2 is connected to a power supply filtering and decoupling module and a reset and key input module; the power supply filtering and decoupling module is that pins 2 and 3 of the chip U2 are connected to one end of a capacitor C122 and one end of an inductor L3, the other end of the capacitor C122 is grounded, the other end of the inductor L3 is connected to one end of a capacitor C121 and one end of a capacitor C120, and are connected to a 3.3V power supply, and the other ends of the capacitor C121 and the other ends of the capacitor C120 are grounded; the reset and key input module is that pin 4 of the chip U2 is connected to one end of a resistor R1, one end of a capacitor C107 and one end of a key SW4, the other end of the resistor R1 is connected to one end of a capacitor C105 and one end of a capacitor C106, and are connected to 3.3V, the other ends of the capacitor C105 and the other ends of the capacitor C106 are grounded, and the other ends of the capacitor C107 and the other ends of the key SW4 are grounded.

[0030] The chip U2 is connected to a clock oscillation module to provide a stable working clock signal for the chip U2. When the power is turned on, the crystal oscillator U4 starts to oscillate and generates a stable clock signal. This signal is further stabilized and transmitted to pins 54 and 53 of the chip U2 through the resonance of the inductor L2 and the capacitors C116 and C117. The chip U2 synchronizes internal operations according to the clock signal. The clock oscillation module is that pin 54 of the chip U2 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to one end of the capacitor C116 and pin 1 of the crystal oscillator U4, and the other end of the capacitor C116 is grounded. Pin 53 of the chip U2 is connected to pin 3 of the crystal oscillator U4 and one end of the capacitor C117. The other end of the capacitor C117 is grounded, and pins 2 and 4 of the crystal oscillator U4 are grounded.

[0031] The central processing unit also includes a storage chip U3, which is a storage interface module, providing an interface for data storage and reading for the central processing unit (chip U2). Pin 1 of the storage chip U3 is connected to pin 32 of chip U2, pin 2 of the storage chip U3 is connected to pin 34 of chip U2 through a resistor, pin 3 of the storage chip U3 is connected to pin 31 of chip U2 through a resistor, pin 5 of the storage chip U3 is connected to pin 35 of chip U2 through a resistor, pin 6 of the storage chip U3 is connected to pin 33 of chip U2 through a resistor, and pin 7 of the storage chip U3 is connected to pin 30 of chip U2 through a resistor.

[0032] like Figure 7As shown, the power management unit includes a chip U27, and the chip U27 is connected to an energy storage filter unit and a power supply temperature detection module. The energy storage filter unit is a chip U27 whose 2nd to 6th pins are connected to one end of a resistor R99, one end of an inductor L1 and one end of a capacitor C4, and the other end of the capacitor C4 is connected to the 7th pin of the chip U27. The other end of the resistor R99 is connected to one end of a capacitor C5, and the other end of the capacitor C5 is grounded. The other end of the inductor L1 is connected to one end of the capacitor C1 and one end of the capacitor C2, and is connected to the positive electrode B+ of the battery. The power supply temperature detection module is a chip U27 whose other ends are connected to one end of a thermistor R98 and one end of a capacitor C3. The other end of the thermistor R98 and the other end of the capacitor C3 are connected to the 18th pin of the chip U27. C1 and C2 form an energy storage filter unit, L1 is a power inductor, and C5 and R99 are an RC filter circuit. The resistance value of the power inductor is small, so it can be used to limit the current and assist in voltage regulation to make the DC voltage more stable. The RC absorption circuit (also called the RC buffer circuit) can be used to improve the voltage and current waveforms that power electronic devices are subjected to when they are turned on and off. The power supply temperature detection module composed of the thermistor group and the filter capacitor C3 can reliably and stably detect the temperature and provide the system with accurate temperature data so that corresponding safety measures can be taken.

[0033] The chip U27 is also connected to a power supply and ground connection module, a dual-channel MOS tube control module, and a Type-C interface connection module. Pins 29 to 33 of the chip U27 are connected to one end of a capacitor C11, one end of a capacitor C12, one end of a capacitor C13, one end of a resistor R103, and one end of a capacitor C14. The other end of the capacitor C11, the other end of the capacitor C12, and the other end of the capacitor C13 are grounded. The other end of the resistor R103 and the other end of the capacitor C14 are connected to pin 27 of the chip U27, one end of a capacitor C15, one end of a capacitor C16, pins 2 and 5 of the dual-channel MOS tube Q1, pins 2 and 5 of the dual-channel MOS tube Q2, and pins 9 and Pin 13, Pin 6 and Pin 4 of the dual-channel MOS tube Q1 are connected to Pin 36 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q1 are connected to one end of capacitor C17 and Pin 10 of chip U27, and connected to 5V, and the other end of capacitor C17 is grounded, Pin 4 and Pin 6 of the dual-channel MOS tube Q2 are connected to Pin 38 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q2 are connected to one end of capacitor C18 and Pin 12 of chip U27, Pin 2 and Pin 5 of Type-C interface U35, Pin 3 of Type-C interface U35 is connected to Pin 40 of chip U27, and Pin 4 of Type-C interface U35 is connected to Pin 41 of chip U27.

[0034] C11, C12, C13, C15, and C16 are charge-discharge output filter energy storage capacitors that stabilize output and enhance anti-interference capabilities. Q1 and Q2 are dual-channel MOS tubes that control the power on and off of the Type-C interface and the light board. Compared with traditional mechanical switches, this design has faster switching time and is easier to control; it has a longer lifespan; lower loss; a smaller size, and almost no noise.

[0035] The power management unit also includes chip U28, chip U29 and chip U30. The models of chip U28, chip U29 and chip U30 are MW9608. Pin 1 of chip U28 is connected to one end of capacitor C100 and one end of resistor R104. The other end of capacitor C100 is connected to chip U28 and pins 2 and 3, and connected to the negative electrode BAT- of the battery. The other end of resistor R104 is connected to the positive electrode B+ of the battery. Pin 1 of chip U29 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U29 are connected to the negative electrode BAT- of the battery. Pin 1 of chip U30 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U30 are connected to the negative electrode BAT- of the battery.

[0036] This part is the battery protection module, which prevents battery short circuit, over discharge, over charge and other functions. R104 and C100 are the driving circuits; this module can realize over charge, over discharge, over current and load short circuit protection, etc. The precise over charge detection voltage ensures safety and full charge, and the low standby current consumes very little current from the battery during storage, realizing battery reverse connection protection.

[0037] like Fig.10 As shown, the key unit includes a touch key interface C_KEY, pin 1 of the touch key interface C_KEY is connected to one end of a resistor R116 and to a 3.3V power supply, and the other end of the resistor R116 is connected to pin 27 of the chip U2 and pin 2 of the touch key interface C_KEY.

[0038] like Fig.11As shown, the key unit also includes a key SW5, pin 3 of the key SW5 is connected to pin 9 of the chip U2, one end of the resistor R113 and one end of the capacitor C109, the other end of the resistor R113 is connected to 3.3V, the other end of the capacitor C109 and pin 1 of the key SW5 are grounded, the key unit also includes a key SW2, pin 3 of the key SW2 is connected to pin 10 of the chip U2, one end of the resistor R114 and one end of the capacitor C110, the other end of the resistor R114 is connected to 3.3V, the other end of the capacitor C110 and pin 1 of the key SW2 are grounded, the key unit also includes a key SW3, pin 3 of the key SW3 is connected to pin 11 of the chip U2, one end of the resistor R115 and one end of the capacitor C111, the other end of the resistor R115 is connected to 3.3V, the other end of the capacitor C111 and pin 1 of the key SW3 are grounded, R113, C109, R114, C110, R115, C111 are RC filter circuits to remove key jitter.

[0039] like Figure 8 As shown, the CPU power supply unit includes a chip U36, the model of the chip U36 is iSGM2019-3.3YN5G / TR, the pins 1 and 3 of the chip U36 are connected to one end of a capacitor C112, and connected to the B+ power supply, the other end of the capacitor C112 is grounded, the pin 5 of the chip U36 is connected to one end of a capacitor C113 and one end of a capacitor C114, and connected to 3.3V, the other end of the capacitor C113 and the other end of the capacitor C114 are grounded, this part provides a 3.3V power supply for the central processing unit, directly draws power from the battery protection end, and can achieve low power standby.

[0040] like Fig. 9 As shown, the light board interface unit includes an interface LIGHT, pin 1 of the interface LIGHT is connected to one end of a capacitor C108 and one end of a capacitor C115, and is connected to 5V, pin 3 of the interface LIGHT, the other end of the capacitor C108 and the other end of the capacitor C115 are grounded, pin 2 of the interface LIGHT is connected to pin 12 of the chip U2, and pin 4 of the interface LIGHT is connected to the VLED_G power supply.

[0041] like Fig.12 As shown, the LED driving unit includes a MOS tube Q10, and the 4th and 6th pins of the MOS tube Q10 are connected to one end of a resistor R91 and one end of a resistor R90, the other end of the resistor R91 is grounded, and the other end of the resistor R90 is connected to the LED_S power supply, the 2nd and 5th pins of the MOS tube Q10 are connected to one end of a resistor U33, and the other end of the resistor U33 is connected to the VLED_G power supply, the MOS tube Q10 receives a CPU control signal to control the brightness of the LED lamp group, U33 is a current limiting resistor, R91 is a pull-down resistor, and R90 is a series resistor.

[0042] A method for implementing a control system of a multifunctional camping light comprises the following steps: Mode switching steps: The control system is equipped with four modes for switching: warm light lighting mode, fireplace light mode, flashing mode, stargazing light mode, and rainbow mode. When the mode is switched, the central processing unit obtains a switching signal, and the central processing unit determines the switching mode, power on and off, and changes the brightness according to the current state.

[0043] The warm light lighting mode is that the central processing unit controls the monochromatic LED lamp pin to output a pulse signal, controls its on and off and brightness change through the MOS tube, controls the RGB_S pin of the central processing unit to output a pulse signal of the agreed protocol, and realizes the adjustment of the color, brightness and saturation of the serially controlled RGB lamp beads, which can simulate the warm light effect and achieve the effect of lighting without being dazzling.

[0044] In the fireplace light mode, the central processing unit controls the single-color LED to turn off and controls the RGB lamp beads to simulate the effect of fireplace flames.

[0045] The flickering mode is a method in which the central processing unit obtains random numbers and converts the random numbers into changes in the brightness of the light to simulate the effect of the flickering candlelight.

[0046] The stargazing light mode is that the central processing unit controls the RGB lamp beads to adjust the colors to simulate the environmental effect of thinking and creation.

[0047] The rainbow mode is that the central processing unit controls the color and brightness of the RGB lamp beads, and realizes the visual rainbow water flow mode by changing the color value of the next RGB lamp bead in real time.

[0048] In the off state, single-touch the top touch button to turn on the device. The default warm light lighting high brightness mode is selected. Single-touch the touch button to cycle through the warm light mode, fireplace light mode, stargazing light mode, etc.; long-press the touch button to smoothly adjust the brightness, and release it to select the current brightness. A single long press can only increase / decrease the brightness.

[0049] In the off state, click the bottom power on / off button to turn on the computer. The default warm light lighting mode is high brightness. Click this button again to turn off the computer.

[0050] When the device is powered on, click the mode cycle button to switch modes, and the sequence is warm light mode - fireplace light mode - stargazing light mode - warm light mode - ...

[0051] When the device is powered on, in any mode, long press the bottom brightness adjustment button to smoothly adjust the brightness. Release it to select the current brightness. A single long press can only increase / decrease the brightness.

[0052] When the device is powered on or within 5 seconds after being powered off, press the brightness adjustment button - mode adjustment button - brightness adjustment button - mode adjustment button in sequence to enter the hidden rainbow mode.

[0053] Power and status signal processing steps: The central processing unit sends a power and status information acquisition instruction to the power management unit. After receiving the instruction, the power management unit sends the corresponding information to the central processing unit according to the agreed protocol. The central processing unit indicates the current power and status through the status indicator light based on the feedback information.

[0054] Steps for listening to data in sleep state: listen to charging signal in shutdown state, wake up from sleep state at fixed period, indicate charging if in charging state, otherwise continue to sleep.

[0055] Battery reminder steps: obtain and compare battery information. When the battery reaches the preset value, the device will flash with a breathing light to remind you if the device is turned on.

[0056] Indicates the power on / off status. It is always on when powered on and off when powered off.

[0057] When charging, the indicator backlight is in a breathing state, and it will be on when fully charged. The indicator light will only show the charging status.

[0058] When the battery is low (≤10%), the backlight will flash quickly to remind you to charge. After the device is turned off, it will flash for 5 seconds and then go out.

[0059] When the power is on, when the battery reaches 10%, the overall light will flash once; when the battery continues to reach 5%, the light will flash twice to indicate that the battery is too low.

[0060] The description of the present invention is given for the purpose of illustration and description, and is not intended to be exhaustive or to limit the invention to the disclosed form. Many modifications and variations will be apparent to those of ordinary skill in the art. The embodiments are selected and described in order to better illustrate the principles and practical applications of the present invention and to enable those of ordinary skill in the art to understand the present invention and thereby design various embodiments with various modifications suitable for particular uses.

Claims

1. A control system for a multifunctional camping light, characterized in that: It includes side light control module, ceiling light control module and master control module; The ceiling light control module includes a touch circuit, a warm light LED circuit and an RGB unit; The master control module comprises a central processing unit and a power management unit, wherein the central processing unit is connected with a key unit, a CPU power supply unit, a light board interface unit and an LED driving unit.

2. A control system for a multifunctional camping light as claimed in claim 1, characterized in that: The touch circuit includes a chip U6, a power filter module, an interface connection module, and a touch sensing module. The model of the chip U6 is A101C. Pin 5 of the chip U6 is connected to one end of a resistor R5 and one end of a capacitor C2. Pin 6 of the chip U6 is connected to one end of a capacitor C1. The other end of the capacitor C2 and the other end of the capacitor C1 are grounded. The other end of the resistor R5 is connected to pin 3 of the interface U5 and one end of a resistor R6. The other end of the resistor R6 is connected to pin 1 of the chip U6. Pin 3 of the chip U6 is connected to one end of a resistor R7. The other end of the resistor R7 is connected to one end of a capacitor C3 and a touch spring U7. The other end of the capacitor C3 is grounded. The warm light LED circuit includes a plurality of groups of series-connected light emitting diodes and resistors arranged in parallel, the free ends of the light emitting diodes are connected to the VCC_G power supply, the free ends of the resistors are connected to the VCC_RGB power supply, and the warm light LED circuit receives the side light board signal and power supply, and as an extension of the side light board, is integrated with the side light board for control; The RGB unit includes a plurality of RGB lamp beads. The DOU end and the DIN end of two adjacent RGB lamp beads are connected. The VDD end of the RGB lamp bead is connected to the VCC_RGB power supply. It receives the serial signal line and power supply of the side light board. As an extension of the side light board, it is integrated with the side light board for control.

3. A control system for a multifunctional camping light as claimed in claim 1, characterized in that: The side light control module includes several groups of series-connected light-emitting diodes and resistors arranged in parallel, the free ends of the light-emitting diodes are connected to the VCC_G power supply, and the free ends of the resistors are connected to the VCC_RGB power supply. The side light control module also includes several capacitors arranged in parallel, one end of the capacitor is connected to the VCC_RGB power supply, and the other end of the capacitor is grounded; the side light control module also includes several RGB lamp beads, the DOU end and the DIN end of two adjacent RGB lamp beads are connected, the VDD end of the RGB lamp beads is connected to the VCC_RGB power supply, and the RGB lamp beads adopt a serial matrix layout.

4. A control system for a multifunctional camping light as claimed in claim 1, characterized in that: The central processing unit includes a chip U2, the model of which is ESP32-S3R8. The chip U2 is connected to a power supply filtering and decoupling module and a reset and key input module; the power supply filtering and decoupling module is that the 2nd and 3rd pins of the chip U2 are connected to one end of a capacitor C122 and one end of an inductor L3, the other end of the capacitor C122 is grounded, the other end of the inductor L3 is connected to one end of a capacitor C121 and one end of a capacitor C120, and are connected to a 3.3V power supply, the other end of the capacitor C121 and the other end of the capacitor C120 are grounded, the reset and key input module is that the 4th pin of the chip U2 is connected to one end of a resistor R1, one end of a capacitor C107 and one end of a key SW4, the other end of the resistor R1 is connected to one end of a capacitor C105 and one end of a capacitor C106, and are connected to 3.3V, the other end of the capacitor C105 and the other end of the capacitor C106 are grounded, and the other end of the capacitor C107 and the other end of the key SW4 are grounded; The chip U2 is connected to a clock oscillation module to provide a stable working clock signal for the chip U2. When the power is turned on, the crystal oscillator U4 starts to oscillate and generates a stable clock signal. This signal is further stabilized and transmitted to pins 54 and 53 of the chip U2 through the resonance of the inductor L2 and the capacitors C116 and C117. The chip U2 synchronizes internal operations according to the clock signal. The clock oscillation module is that pin 54 of the chip U2 is connected to one end of the inductor L2, the other end of the inductor L2 is connected to one end of the capacitor C116 and pin 1 of the crystal oscillator U4, and the other end of the capacitor C116 is grounded. Pin 53 of the chip U2 is connected to pin 3 of the crystal oscillator U4 and one end of the capacitor C117. The other end of the capacitor C117 is grounded, and pins 2 and 4 of the crystal oscillator U4 are grounded.

5. The control system of a multifunctional camping light as claimed in claim 1, characterized in that: The central processing unit also includes a storage chip U3, which is a storage interface module, providing an interface for data storage and reading for the central processing unit (chip U2). Pin 1 of the storage chip U3 is connected to pin 32 of the chip U2, pin 2 of the storage chip U3 is connected to pin 34 of the chip U2 through a resistor, pin 3 of the storage chip U3 is connected to pin 31 of the chip U2 through a resistor, pin 5 of the storage chip U3 is connected to pin 35 of the chip U2 through a resistor, pin 6 of the storage chip U3 is connected to pin 33 of the chip U2 through a resistor, and pin 7 of the storage chip U3 is connected to pin 30 of the chip U2 through a resistor.

6. A control system for a multifunctional camping light as claimed in claim 1, characterized in that: The power management unit includes a chip U27, and the chip U27 is connected to an energy storage filter unit and a power supply temperature detection module. The energy storage filter unit is that pins 2 to 6 of the chip U27 are connected to one end of a resistor R99, one end of an inductor L1 and one end of a capacitor C4, and the other end of the capacitor C4 is connected to pin 7 of the chip U27, the other end of the resistor R99 is connected to one end of a capacitor C5, and the other end of the capacitor C5 is grounded, and the other end of the inductor L1 is connected to one end of a capacitor C1 and one end of a capacitor C2, and connected to the positive electrode B+ of the battery, and the power supply temperature detection module is that the other end of the capacitor C1 and the other end of the capacitor C2 are connected to one end of a thermistor R98 and one end of a capacitor C3, and the other end of the thermistor R98 and the other end of the capacitor C3 are connected to pin 18 of the chip U27; The chip U27 is also connected to a power supply and ground connection module, a dual-channel MOS tube control module, and a Type-C interface connection module. Pins 29 to 33 of the chip U27 are connected to one end of a capacitor C11, one end of a capacitor C12, one end of a capacitor C13, one end of a resistor R103, and one end of a capacitor C14. The other end of the capacitor C11, the other end of the capacitor C12, and the other end of the capacitor C13 are grounded. The other end of the resistor R103 and the other end of the capacitor C14 are connected to pin 27 of the chip U27, one end of a capacitor C15, one end of a capacitor C16, pins 2 and 5 of the dual-channel MOS tube Q1, pins 2 and 5 of the dual-channel MOS tube Q2, and pins 9 and Pin 13, Pin 6 and Pin 4 of the dual-channel MOS tube Q1 are connected to Pin 36 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q1 are connected to one end of capacitor C17 and Pin 10 of chip U27, and connected to 5V, and the other end of capacitor C17 is grounded, Pin 4 and Pin 6 of the dual-channel MOS tube Q2 are connected to Pin 38 of chip U27, Pin 1 and Pin 3 of the dual-channel MOS tube Q2 are connected to one end of capacitor C18, Pin 12 of chip U27, Pin 2 and Pin 5 of Type-C interface U35, Pin 3 of Type-C interface U35 is connected to Pin 40 of chip U27, and Pin 4 of Type-C interface U35 is connected to Pin 41 of chip U27.

7. The control system of a multifunctional camping light according to claim 1, characterized in that: The power management unit also includes chip U28, chip U29 and chip U30. The models of chip U28, chip U29 and chip U30 are MW9608. Pin 1 of chip U28 is connected to one end of capacitor C100 and one end of resistor R104. The other end of capacitor C100 is connected to chip U28 and pins 2 and 3, and connected to the negative electrode BAT- of the battery. The other end of resistor R104 is connected to the positive electrode B+ of the battery. Pin 1 of chip U29 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U29 are connected to the negative electrode BAT- of the battery. Pin 1 of chip U30 is connected to pin 1 of chip U28, and pins 2 and 3 of chip U30 are connected to the negative electrode BAT- of the battery.

8. The control system of a multifunctional camping light as claimed in claim 1, characterized in that: The key unit includes a touch key interface C_KEY, wherein pin 1 of the touch key interface C_KEY is connected to one end of a resistor R116 and to a 3.3V power supply, and the other end of the resistor R116 is connected to pin 27 of the chip U2 and pin 2 of the touch key interface C_KEY; The key unit also includes a key SW5, pin 3 of which is connected to pin 9 of chip U2, one end of resistor R113 and one end of capacitor C109, the other end of resistor R113 is connected to 3.3V, the other end of capacitor C109 and pin 1 of key SW5 are grounded, the key unit also includes a key SW2, pin 3 of which is connected to pin 10 of chip U2, one end of resistor R114 and one end of capacitor C110, the other end of resistor R114 is connected to 3.3V, the other end of capacitor C110 and pin 1 of key SW2 are grounded, the key unit also includes a key SW3, pin 3 of key SW3 is connected to pin 11 of chip U2, one end of resistor R115 and one end of capacitor C111, the other end of resistor R115 is connected to 3.3V, the other end of capacitor C111 and pin 1 of key SW3 are grounded.

9. The control system of a multifunctional camping light according to claim 1, characterized in that: The CPU power supply unit includes a chip U36, the model of which is iSGM2019-3.3YN5G / TR. Pins 1 and 3 of chip U36 are connected to one end of capacitor C112 and to the B+ power supply, and the other end of capacitor C112 is grounded. Pin 5 of chip U36 is connected to one end of capacitor C113 and one end of capacitor C114 and to 3.3V, and the other end of capacitor C113 and the other end of capacitor C114 are grounded.

10. The control system of a multifunctional camping light according to claim 1, characterized in that: The LED driving unit includes a MOS tube Q10, wherein the 4th and 6th pins of the MOS tube Q10 are connected to one end of a resistor R91 and one end of a resistor R90, the other end of the resistor R91 is grounded, and the other end of the resistor R90 is connected to an LED_S power supply, the 2nd and 5th pins of the MOS tube Q10 are connected to one end of a resistor U33, and the other end of the resistor U33 is connected to a VLED_G power supply, the MOS tube Q10 receives a CPU control signal to control the brightness of the LED lamp group, U33 is a current limiting resistor, R91 is a pull-down resistor, and R90 is a series resistor.

Images