Control system for mobile lighting equipment and mobile lighting equipment

Abstract

The present invention belongs to the technical field of lighting devices and relates to a control system for a mobile lighting device and the mobile lighting device. A magnetic control trigger unit is provided, which is composed of a magnetic core. The magnetic core has an accommodation space for a wire to pass through. The magnetic core is composed of a first magnetic core and a second magnetic core that are separated from each other. The first magnetic core can move close to the second magnetic core under the action of an external force, so that the inductance of the wire portion located in the accommodation space changes, thereby generating a trigger signal. The magnetic control trigger unit does not need to be in direct electrical contact with a single-chip microcomputer. The closed and expanded states of the first magnetic core and the second magnetic core are used to change the performance of the main power supply line, and the wire performance is changed into inductance. This ensures that when designing the mobile lighting device, the magnetic control trigger unit can control the mobile lighting device without the need for wiring from the single-chip microcomputer like an existing touch switch, and ensures that the installation position of the magnetic control trigger unit on the mobile lighting device will not be restricted.

Description

Technical Field

[0001] The present invention belongs to the technical field of lighting devices and relates to a control system of a mobile lighting device and the mobile lighting device. Background Art

[0002] At present, touch switches are widely used in flashlights. In electronic circuits, touch switches generally refer to electrical contact type touch switches. This type of switch is turned on when pressed and disconnected when released. It has the advantages of fast switching speed, short stroke, and long life, but has weak overcurrent capability. When using a touch switch, the touch switch is directly connected to the microcontroller pin, and the microcontroller detects single-click, double-click, and long-press operations of the touch switch to achieve various output power adjustments.

[0003] Since the tact switch is electrically controlled, it needs to be connected to the microcontroller via two wires. That is, the two legs of the tact switch are connected to a pin of the microcontroller and the GND position in the circuit respectively. In general flashlight applications, the tail has only one electrode (positive or negative of the battery) and cannot be controlled. Therefore, when installing the tact switch on the flashlight, the tact switch must be placed near the microcontroller to achieve electrical connection between the tact switch and the microcontroller, which limits the location of the tact switch on the mobile lighting device during design. Summary of the Invention

[0004] The purpose of the present invention is to address the deficiencies of the prior art and provide a control system for a mobile lighting device and the mobile lighting device thereof, so as to solve the problem that the installation position of the existing tact switch on the mobile lighting device is limited.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A control system for a mobile lighting device comprises: a signal detection unit, a signal conversion unit, an LED drive unit and a magnetic control trigger unit, wherein the magnetic control trigger unit is used to form a trigger signal and send it to the signal detection unit; the signal detection unit is used to receive the trigger signal and send the trigger signal to the signal conversion unit; the signal conversion unit is used to receive the trigger signal and send an adjustment signal for controlling the working state of the mobile lighting device; the LED drive unit is used to receive the adjustment signal sent by the signal conversion unit to adjust the working state of the LED light group of the mobile lighting device; the magnetic control trigger unit comprises: a magnetic core, the magnetic core having an accommodating space for a wire to pass through, the magnetic core comprising a first magnetic core and a second magnetic core separated from each other, and the first magnetic core can move close to the second magnetic core under the action of an external force, so that the inductance of the wire portion located in the accommodating space changes, thereby generating a trigger signal.

[0007] Furthermore, a signal sending unit is further connected between the signal detection unit and the signal magnetic control trigger unit. The signal sending unit includes: a resistor R2, a diode D1, a MOS transistor Q3, and a resistor R9. One end of the resistor R9 is connected to the signal detection unit, and the other end of the resistor R9 is connected to the input end of the diode D1. The output end of the diode D1 is connected to the drain of the MOS transistor Q3, the source of the MOS transistor Q3 is grounded, and the gate of the MOS transistor Q3 is connected to the signal conversion unit. One end of the resistor R9 is connected to the gate of the MOS transistor, and the other end of the resistor R9 is connected to the source of the MOS transistor Q3.

[0008] Furthermore, a protection unit is connected between the signal sending unit and the magnetic control trigger unit. The protection unit includes: a resistor R1 and a TVS tube D2. One end of the resistor R1 is connected to the magnetic control trigger unit, the other end of the resistor R1 is connected to one end of the TVS tube D2, and the other end of the TVS tube D2 is grounded.

[0009] Furthermore, the control system further includes: an isolation unit, which includes: a MOS transistor Q1, a resistor R3, a resistor R4, a MOS transistor Q2, a resistor R5, and a resistor R6. The drain of the MOS transistor Q1 is connected to the signal detection unit, the source of the MOS transistor Q1 is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q1 is connected to the resistor R4, the other end of the resistor R4 is grounded, one end of the resistor R3 is connected to the gate of the MOS transistor Q1, and the other end of the resistor R3 is connected to the signal conversion unit. The drain of the MOS transistor Q2 is connected to the positive terminal V+ of the output voltage, the gate of the MOS transistor Q2 is connected to the resistor R5, the other end of the resistor R5 is grounded, one end of the resistor R6 is connected to the gate of the MOS transistor Q2, and the other end of the resistor R6 is connected to the signal conversion unit.

[0010] Furthermore, the signal detection unit includes: a capacitor C1 and a resistor R8, one end of the resistor C1 is connected to the drain of the MOS tube Q1, the other end of the capacitor C1 is connected to one end of the resistor R8, the other end of the resistor R8 is grounded, and the capacitor C1 and the resistor R8 bracket are further connected to a resistor R7, and the other end of the resistor R7 is connected to the signal conversion unit.

[0011] Furthermore, the signal conversion unit includes: a single chip microcomputer U1, the model of which is PIC16F1823.

[0012] Furthermore, the single chip microcomputer U1 includes: a first digital signal port DATA1, a second digital signal port DATA2 and a third digital signal port DATA3, the first digital signal port DATA1 is connected to the gate of the MOS transistor Q3, the second digital signal port DATA2 is connected to the gate of the MOS transistor Q1, and the third digital signal port DATA3 is connected to the gate of the MOS transistor Q2.

[0013] Furthermore, the LED driving unit includes: a power management chip U2, and the power management chip U2 is connected to a power supply circuit.

[0014] Furthermore, the LED driving unit further includes: an operational amplifier circuit, and the operational amplifier circuit further includes: an amplifier U3.

[0015] The present invention also provides a mobile lighting device, comprising: a main body, on which the control system is provided.

[0016] Beneficial effects of the present invention:

[0017] By setting a magnetic control trigger unit consisting of a magnetic core, the magnetic core has a accommodating space for the wire to pass through, and the magnetic core consists of a first magnetic core and a second magnetic core that are separated from each other, and the first magnetic core can move close to the second magnetic core under the action of an external force, so that the inductance of the wire portion located in the accommodating space changes, thereby generating a trigger signal, so that the magnetic control trigger unit does not need to be in direct electrical contact with the single-chip microcomputer, and the closed and expanded states of the first magnetic core and the second magnetic core are used to change the performance of the main power supply line, and the wire performance is changed into inductance, thereby ensuring that when designing a mobile lighting device, the magnetic control trigger unit can control the mobile lighting device without the need for leads from the single-chip microcomputer like the existing touch switch, and ensuring that the installation position of the magnetic control trigger unit on the mobile lighting device will not be restricted. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Attachment Figure 1 It is a schematic diagram of the principle of the present invention;

[0019] Attachment Figure 2 It is a schematic diagram of the principle of the control and detection unit in the present invention;

[0020] Attachment Figure 3 It is a schematic diagram of the principle of the signal detection unit in the present invention;

[0021] Attachment Figure 4 This is a schematic diagram of the principle of the LED driving unit in the present invention;

[0022] Attachment Figure 5 It is a simplified structural diagram of the magnetic control trigger unit in the present invention.

[0023] Figure symbols: 100 - magnetic core, 110 - first magnetic core, 120 - second magnetic core, 130 - accommodation space. DETAILED DESCRIPTION

[0024] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and are not to be construed as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0027] In the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they may refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0028] Reference Attachment Figure 1 -Attached Figure 5, a control system for a mobile lighting device, comprising: a signal detection unit, a signal conversion unit, an LED driving unit and a magnetic control trigger unit, wherein the magnetic control trigger unit is used to form a trigger signal and send it to the signal detection unit; the signal detection unit is used to receive the trigger signal and send the trigger signal to the signal conversion unit; the signal conversion unit is used to receive the trigger signal and send an adjustment signal for controlling the working state of the mobile lighting device; the LED driving unit is used to receive the adjustment signal sent by the signal conversion unit to adjust the working state of the LED light group of the mobile lighting device; the magnetic control trigger unit comprises: a magnetic core 100, the magnetic core 100 has an accommodating space 130 for the wire to pass through, the magnetic core comprises a first magnetic core 110 and a second magnetic core 120 separated from each other, and the first magnetic core 110 can move close to the second magnetic core 120 under the action of an external force, so that the inductance of the wire part located in the accommodating space 130 changes, thereby generating a trigger signal.

[0029] In one embodiment, the signal conversion unit includes: a single chip microcomputer U1, the model of the single chip microcomputer is PIC16F1823, further, the single chip microcomputer U1 includes: a first digital signal port DATA1, a second digital signal port DATA2 and a third digital signal port DATA3,

[0030] In one embodiment, a signal sending unit is further connected between the signal detection unit and the signal magnetic control trigger unit. The signal sending unit includes: a resistor R2, a diode D1, a MOS transistor Q3, and a resistor R9. One end of the resistor R9 is connected to the signal detection unit, the other end of the resistor R9 is connected to the input end of the diode D1, the output end of the diode D1 is connected to the drain of the MOS transistor Q3, the source of the MOS transistor Q3 is grounded, and the gate of the MOS transistor Q3 is connected to the signal conversion unit. Specifically, the gate of the MOS transistor Q3 is connected to the first digital signal port DATA1, one end of the resistor R9 is connected to the gate of the MOS transistor, and the other end of the resistor R9 is connected to the source of the MOS transistor Q3. In this embodiment, the resistance of the resistor R2 is 2.4R, the model of the diode D1 is SS14, the model of the MOS transistor Q3 is ADN2408, and the resistance of the resistor R9 is 10K.

[0031] In one embodiment, a protection unit is further connected between the signal sending unit and the magnetic control trigger unit. The protection unit includes: a resistor R1 and a TVS tube D2. One end of the resistor R1 is connected to the magnetic control trigger unit, the other end of the resistor R1 is connected to one end of the TVS tube D2, and the other end of the TVS tube D2 is grounded. In this embodiment, the resistance of the resistor R2 is 5.1R, and the model of the TVS tube D2 is SMAJ7.5CA. By connecting R1 and D2 in parallel between BAT+ and GND, the circuit can be protected from overshoot. When the voltage spike or pulse between BAT+ and GND reaches 7.5V in a short period of time, the TVS tube D2 is turned on to release the spike energy to prevent burning other electronic components.

[0032] In one embodiment, the control system further includes: an isolation unit, the isolation unit including: a MOS transistor Q1, a resistor R3, a resistor R4, a MOS transistor Q2, a resistor R5, and a resistor R6, the drain of the MOS transistor Q1 being connected to the signal detection unit, the source of the MOS transistor Q1 being connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q1 being connected to the resistor R4, the other end of the resistor R4 being grounded, one end of the resistor R3 being connected to the gate of the MOS transistor Q1, and the other end of the resistor R3 being connected to the signal conversion unit. Specifically, the other end of the resistor R3 being connected to the second digital signal port DATA2 of the signal conversion unit, the drain of the MOS transistor Q2 being connected to the positive terminal V+ of the output voltage, the gate of the MOS transistor Q2 being connected to the resistor R5, the other end of the resistor R5 being grounded, one end of the resistor R6 being connected to the gate of the MOS transistor Q2, and the other end of the resistor R6 being further connected to the third digital signal port D of the signal conversion unit. ATA3. In this embodiment, the signals of the MOS transistors Q1 and Q2 are both AON2405, the resistance values of the resistors R4 and R5 are both 1k, and the resistance values of the resistors R3 and R6 are both 100R. By arranging the MOS transistors Q1, R3, R4, Q2, R5, and R6, the circuit formed by the MOS transistors Q1, R3, R4, Q2, R5, and R6 can isolate the BAT+ terminal of the power supply from the positive terminal V+ of the output voltage in a short period of time. If the BAT+ terminal of the power supply and the positive terminal V+ of the output voltage are not isolated, the positive terminal V+ of the output voltage will consume a large current from the BAT+ terminal of the power supply, thereby affecting the signal transceiver function of the BAT+ terminal of the power supply on the control and detection unit. In the above embodiment, the magnetic control trigger unit, the signal detection unit, the signal transmission unit, the protection unit, and the isolation unit are connected to form the control and detection unit.

[0033] In one embodiment, the signal detection unit includes: a capacitor C1 and a resistor R8, one end of the resistor C1 is connected to the drain of the MOS tube Q1, the other end of the capacitor C1 is connected to one end of the resistor R8, the other end of the resistor R8 is grounded, the capacitor C1 and the resistor R8 bracket are further connected to a resistor R7, the other end of the resistor R7 is connected to the signal conversion unit, specifically, the other end of the resistor R7 is connected to the No. 10 pin DETECT network port of the single-chip microcomputer U1. In this embodiment, the resistance of the resistor R7 is 10K, and the resistor R7 is connected to the No. 10 pin DETECT network port of the single-chip microcomputer U1. The resistance of resistor R8 is 4.7K, and the capacity of capacitor C1 is 100nF. By connecting capacitor C1 and resistor R8 in series between the BAT+ and GND networks and connecting them to the microcontroller through resistor R7, capacitor C1, resistor R7 and resistor R8 can form a high-pass filter to prevent low-frequency signals from passing through, while high-frequency voltage spikes or pulse signals can pass through smoothly. At the same time, the DC voltage between the BAT+ and GND networks is isolated by capacitor C1, and only high-frequency voltage spikes and pulses can pass through and reach the detection pin of the microcontroller after passing through resistor R7.

[0034] In one embodiment, the LED driving unit includes: a power management chip U2 and an operational amplifier circuit, the power management chip U2 is connected to the power supply circuit, the operational amplifier circuit also includes: an amplifier U3, further, the No. 13 pin VIN of the power management chip U2 is connected to the positive terminal V+ of the output voltage, the No. 13 pin VIN of the power management chip U2 is connected to the positive terminal V+ of the output voltage, and the capacitor C8 and the capacitor C7 are connected in parallel in sequence, and the other ends of the capacitors C7 and C8 are grounded, and the No. 13 pin VIN of the power management chip U2 is also connected to the power management Pin 8 of chip U2 is connected to VIN, pin 5 of power management chip U2 is connected to pin 2 of microcontroller U1 RA5, pin 10 of power management chip U2 GND, pin 11 of power management chip U2 GND and pin 12 of power management chip U2 are all grounded, pin 2 of power management chip U2 OUT is connected to capacitor C4, capacitor C5 and capacitor C6 in parallel and then connected to the positive connection end of LED lamp group, pin 4 of power management chip U2 RAMP is connected to capacitor C3 and then connected to pin 2 of power management chip U2 OUT, pin 1 of power management chip U2 Pin SW is connected to the inductor L1 and then to the input end of the capacitor C4. Pin SW of the power management chip U2 is connected to pin SW of the power management chip U2. Pin FB of the power management chip U2 is connected to the resistor R11 and then to the No. 4 connection end of the amplifier U3. A resistor R13 is also connected between the No. 4 connection end of the amplifier U3 and the resistor R11. The other end of the resistor R13 is grounded. The connection end of the resistor R13 and the resistor R11 is also connected to a resistor R10. The other end of the resistor R10 is connected to the input end of the capacitor C4. The No. 2 connection end of the amplifier U3 is grounded. The connection end is grounded, the No. 1 connection end of the amplifier U3 is connected in series with the resistor R12 and then connected to the negative connection end of the LED lamp group, the No. 5 connection end of the amplifier U3 is connected to the No. 9 pin RC1 of the single-chip microcomputer U1, the No. 5 connection end of the amplifier U3 is connected to the capacitor C9, and the other end of the capacitor C9 is grounded, the No. 3 connection end of the amplifier U3 is connected in sequence with the resistor R15, the capacitor C10, the resistor R16, the resistor R18, and the resistor R17, and then connected to the No. 3 pin RA4 of the single-chip microcomputer U1, and a capacitor C11 is also connected between the resistor R16 and the resistor R18, and the other end of the capacitor C11 is grounded.

[0035] The present invention also provides a mobile lighting device, comprising: a main body, on which the control system is provided.

[0036] Working process: After the mobile lighting device is connected to the power supply, the microcontroller U1 sends a signal through the first digital signal port DATA1 to control the conduction of the MOS tube Q3. The signal frequency is 1KHz and the duty cycle is 0.4% (period is 1ms and the pulse width is 4us). The second digital signal port DATA2 and the third digital signal port DATA3 send signals to control the shutdown of Q1 and Q2. The signal frequency is 1KHz and the pulse width is 12us. In terms of timing, the signal is sent 4us before the first digital signal port DATA1 sends the signal. Therefore, the second digital signal port DATA2 and the third digital signal port DATA3 turn off the MOS tube Q1 and the MOS tube Q2 1000 times per second, and each time lasts 8-10us. , achieving the short-term isolation of the BAT+ terminal of the power supply and the positive terminal V+ of the output voltage. Within this interval, the first digital signal port DATA1 controls the MOS tube Q3 to be turned on for 4us, connecting the BAT+ and GND networks through the MOS tube Q3, resistor R2 and diode D1 to form a current path, which lasts for 3-4us. Due to the influence of the reverse induced electromotive force of the line parasitic inductance, after this duration ends, the BAT+ network will immediately form a reverse induced electromotive force discharge voltage spike relative to GND. Resistor R1 and TVS tube D2 will absorb the excessively prominent part of this spike and clamp the peak to 7.5V. In the detection circuit, capacitor C1 and resistor R8 isolate the DC part of the BAT+ network, and input the AC part of the voltage spike into the microcontroller U1 through resistor R7 and the DETECT network port on pin 10 of the single-product machine U1. When the first magnetic core of the magnetic control trigger unit is pressed, the first magnetic core is closed and in contact with the second magnetic core, and the inductance of the wire part in the accommodation space increases to 2-3uH, so that the magnetic control trigger unit can be equivalent to a 2-3uH inductor LS1. In general, the duration of a single press of the switch is between 100-200ms. During this period, when the first digital signal port DATA1 controls the MOS tube Q3 to turn on, the circuit is equivalent to the BAT+ network through the magnetic control trigger unit, resistor R2, and diode D1 in sequence. , MOS tube Q3 is connected to GND to form a current path, which charges the inductor LS1 and the parasitic inductance of the line within 3-4us. After this duration, the BAT+ network will immediately form a voltage pulse relative to GND, which is generated by the discharge of the induced electromotive force superimposed by the inductor LS1 and the parasitic inductance of the line. After passing through the signal detection circuit, it is input into the pin of the microcontroller U1. The microcontroller U1 determines the duration of this voltage spike through the I / O port interrupt. If the duration is greater than 0.25us and maintains for more than 10 cycles, it is determined whether the first magnetic core has been pressed at this time. If the 10 cycles are all lower than 0.2us, it is determined that the line is naturally turned on and not pressed. When the microcontroller U1 detects a trigger signal, the microcontroller U1 dims the LED drive circuit through the PWM network.

[0037] The embodiment described above is only one of the more preferred specific embodiments of the present invention. Any common changes and substitutions made by those skilled in the art within the scope of the technical solution of the present invention should be included in the protection scope of the present invention.

Claims

1. A control system for mobile lighting equipment, characterized in that: include: A signal detection unit, a signal conversion unit, an LED driving unit, and a magnetic control trigger unit, wherein the magnetic control trigger unit is used to form a trigger signal and send it to the signal detection unit; the signal detection unit is used to receive the trigger signal and send the trigger signal to the signal conversion unit; the signal conversion unit is used to receive the trigger signal and send an adjustment signal for controlling the working state of the mobile lighting device; the LED driving unit is used to receive the adjustment signal sent by the signal conversion unit to adjust the working state of the LED light group of the mobile lighting device; The magnetic control trigger unit includes: a magnetic core, which has a storage space for a wire to pass through. The magnetic core includes a first magnetic core and a second magnetic core that are separated from each other, and the first magnetic core can move close to the second magnetic core under the action of an external force, so that the inductance of the wire portion located in the storage space changes, thereby generating a trigger signal.

2. A control system for mobile lighting equipment according to claim 1, characterized in that: A signal sending unit is further connected between the signal detection unit and the magnetic control trigger unit. The signal sending unit includes: a resistor R2, a diode D1, a MOS transistor Q3, and a resistor R9. One end of the resistor R2 is connected to the signal detection unit, the other end of the resistor R2 is connected to the input end of the diode D1, the output end of the diode D1 is connected to the drain of the MOS transistor Q3, the source of the MOS transistor Q3 is grounded, and the gate of the MOS transistor Q3 is connected to the signal conversion unit. One end of the resistor R9 is connected to the gate of the MOS transistor Q3, and the other end of the resistor R9 is connected to the source of the MOS transistor Q3.

3. The control system of a mobile lighting device according to claim 2, characterized in that: A protection unit is further connected between the signal sending unit and the magnetic control trigger unit. The protection unit includes: a resistor R1 and a TVS tube D2. One end of the resistor R1 is connected to the magnetic control trigger unit, the other end of the resistor R1 is connected to one end of the TVS tube D2, and the other end of the TVS tube D2 is grounded.

4. The control system of a mobile lighting device according to claim 3, characterized in that: The control system further includes: an isolation unit, which includes: a MOS transistor Q1, a resistor R3, a resistor R4, a MOS transistor Q2, a resistor R5, and a resistor R6. The drain of the MOS transistor Q1 is connected to the signal detection unit, the source of the MOS transistor Q1 is connected to the source of the MOS transistor Q2, the gate of the MOS transistor Q1 is connected to the resistor R4, the other end of the resistor R4 is grounded, one end of the resistor R3 is connected to the gate of the MOS transistor Q1, and the other end of the resistor R3 is connected to the signal conversion unit. The drain of the MOS transistor Q2 is connected to the positive terminal V+ of the output voltage, the gate of the MOS transistor Q2 is connected to the resistor R5, the other end of the resistor R5 is grounded, one end of the resistor R6 is connected to the gate of the MOS transistor Q2, and the other end of the resistor R6 is connected to the signal conversion unit.

5. The control system of a mobile lighting device according to claim 4, characterized in that: The signal detection unit includes: a capacitor C1 and a resistor R8, one end of the resistor C1 is connected to the drain of the MOS tube Q1, the other end of the capacitor C1 is connected to one end of the resistor R8, and the other end of the resistor R8 is grounded. A resistor R7 is further connected between the capacitor C1 and the resistor R8, and the other end of the resistor R7 is connected to the signal conversion unit.

6. The control system of a mobile lighting device according to claim 4, characterized in that: The signal conversion unit includes: a single chip microcomputer U1, the model of which is PIC16F1823.

7. A control system for mobile lighting equipment according to claim 6, characterized in that: The single-chip computer U1 includes: a first digital signal port DATA1, a second digital signal port DATA2 and a third digital signal port DATA3. The first digital signal port DATA1 is connected to the gate of the MOS transistor Q3, the second digital signal port DATA2 is connected to the gate of the MOS transistor Q1, and the third digital signal port DATA3 is connected to the gate of the MOS transistor Q2.

8. The control system of a mobile lighting device according to claim 7, characterized in that: The LED driving unit includes: a power management chip U2, and the power management chip U2 is used to connect to the power supply circuit.

9. The control system of a mobile lighting device according to claim 8, characterized in that: The LED driving unit further includes an operational amplifier circuit, and the operational amplifier circuit further includes an amplifier U3.

10. A mobile lighting device, characterized in that: include: A main body, wherein the main body is provided with a control system according to any one of claims 1 to 9.

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