Dual lamp control device and video camera

Abstract

The utility model discloses a kind of dual-lamp control device and camera equipment.The dual-lamp control device includes control chip, sensing module, first light module and second light module;The sensing module is electrically connected with the control chip, for outputting sensing signal to the control chip;The first light module includes first drive circuit and first lamp group, and the first drive circuit is electrically connected with the control chip and the first lamp group;The second light module includes second drive circuit and second lamp group, and the second drive circuit is electrically connected with the control chip and the second lamp group;The control chip is electrically connected with the first drive circuit and the second drive circuit.Solve the problem that in prior art, in low-light environment, lighting effect guarantee and equipment power consumption control are difficult to take into account.

Description

Technical Field

[0001] This utility model relates to the field of circuit control, and in particular to a dual-lamp control device and a camera device. Background Technology

[0002] In nighttime scenarios, existing camera solutions suffer from the following technical contradictions: Lights off mode: Although it can achieve the lowest power consumption, in completely dark environments such as remote mountain villages where there is no moonlight or streetlights, the camera equipment cannot obtain the required image effect due to the lack of basic lighting, resulting in black and white videos that cannot reflect the equipment's extreme black light performance advantage, which has obvious technical defects. Full light mode: While it can ensure image quality, the power consumption of the lights increases significantly, which is seriously inconsistent with the low power consumption design requirements of the AOV system.

[0003] Therefore, existing technologies face the challenge of balancing lighting performance with power consumption control in low-light environments. Utility Model Content

[0004] This utility model provides a dual-lamp control device and a camera to solve the problem in the prior art of balancing lighting effect and power consumption control in low-light environments.

[0005] A dual-lamp control device includes a control chip, a sensing module, a first lamp module, and a second lamp module; The sensing module is electrically connected to the control chip and is used to output sensing signals to the control chip; The first lighting module includes a first driving circuit and a first lamp group, wherein the first driving circuit is electrically connected to the control chip and the first lamp group; The second lighting module includes a second driving circuit and a second lamp group, wherein the second driving circuit is electrically connected to the control chip and the second lamp group; The control chip is electrically connected to the first driving circuit and the second driving circuit, and is used to control the first driving circuit or the second driving circuit to work according to the sensing signal, wherein the driving current of the first driving circuit is less than the driving current of the second driving circuit.

[0006] Preferably, the sensing module includes: A light sensing circuit, comprising a light-sensitive acquisition unit, a signal conditioning unit, an analog-to-digital converter chip, and a comparator connected in sequence, wherein the output terminal of the comparator is electrically connected to the second signal input terminal of the control chip; The photosensitive acquisition unit is a photoresistor or a photodiode; The signal conditioning unit includes an operational amplifier and a filter capacitor; The analog-to-digital converter chip is used to convert the ambient light signal after signal conditioning unit into digital light data and transmit it to the comparator; The comparator is used to compare digital illumination data with an illumination threshold. When the digital illumination data is greater than the illumination threshold, a high-level signal is output to the control chip. When the digital illumination data is less than the illumination threshold, a low-level signal is output to the control chip.

[0007] Preferably, the sensing module further includes: An event detection circuit includes a target detection unit, a signal processing unit, and a determination output unit that are connected in sequence. The output terminal of the determination output unit is electrically connected to the third signal input terminal of the control chip. The target detection unit is an infrared sensor or an image sensor; The signal processing unit includes a signal amplification circuit and a filtering circuit; The determination output unit is a comparator or logic chip. It determines whether a preset event has occurred based on the signal processed by the signal processing unit. When the preset event is detected, it outputs a low-level signal to the control chip. When the preset event is not detected, it outputs a high-level signal to the control chip.

[0008] Preferably, the control chip has a built-in signal analysis module, which is composed of hardware logic circuits and is electrically connected to the control terminals of the first driving circuit and the second driving circuit. When the control chip receives a low-level signal from the light-sensing circuit and a high-level signal from the event detection circuit, the signal parsing module outputs a first control signal to the first driving circuit to control the first driving circuit to turn on. When the control chip receives a low-level signal from the light sensing circuit and a low-level signal from the event detection circuit, the signal parsing module outputs a second control signal to the second driving circuit to control the second driving circuit to turn on. When the control chip receives a high-level signal from the light-sensing circuit, the signal analysis module outputs a third control signal to the first and second drive circuits, controlling both drive circuits to turn off.

[0009] Preferably, the driving current of the first driving circuit and the driving current of the second driving circuit are both constant currents.

[0010] Preferably, the driving current of the first driving circuit is a constant current, and the driving current of the second driving circuit is a variable current.

[0011] Preferably, the first driving circuit includes a constant current module, a current limiting resistor, and a sensing control switch; The power input terminal of the constant current module is connected to a DC power supply, and the current output terminal is connected to the anode of the first lamp group through a current-limiting resistor. The enable terminal of the constant current module is electrically connected to one end of the inductive control switch, and the other end of the inductive control switch is electrically connected to the output terminal of the control chip. The grounding terminal of the inductive control switch is grounded through a pull-down resistor.

[0012] Preferably, the brightness of the first lamp group when it is working is less than the minimum brightness of the second lamp group when it is working.

[0013] Preferably, the control chip includes: The clock unit has its signal output terminal electrically connected to the timing control terminal of the second driving circuit.

[0014] A camera device comprising a dual-lamp control device as described in any of the preceding claims.

[0015] The aforementioned dual-lamp control device and camera equipment utilize a sensor module that outputs a sensor signal to a control chip, which then selectively drives the two lamp modules. This design allows the device to dynamically adjust the lighting mode based on environmental changes (such as the presence of human activity or object movement): in low light conditions with no special requirements, only the low-power first lamp module is activated; when a scene requiring enhanced lighting is detected, it automatically switches to the high-brightness second lamp module. Through precise triggering of the sensor signal, intelligent control that minimizes energy consumption unless absolutely necessary is achieved, ensuring lighting performance in critical scenarios while minimizing unnecessary power consumption. Therefore, it solves the problem in existing technologies where balancing lighting performance and power consumption control in low-light environments is difficult. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of a dual-lamp control device in one embodiment of the present invention. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0019] It should be understood that this invention can be embodied in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, providing these embodiments will make the disclosure thorough and complete, and will fully convey the scope of this invention to those skilled in the art.

[0020] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the invention. When used herein, the singular forms “a,” “an,” and “the” are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the terms “comprising” and / or “including,” when used in this specification, identify the presence of the stated features, integers, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups. When used herein, the term “and / or” includes any and all combinations of the associated listed items.

[0021] To fully understand this utility model, detailed structures and steps will be presented in the following description to illustrate the technical solution proposed by this utility model. Preferred embodiments of this utility model are described in detail below; however, in addition to these detailed descriptions, this utility model may have other embodiments.

[0022] This utility model embodiment provides a dual-lamp control device, such as... Figure 1 As shown, the components are: control chip B, sensor module A, first lighting module C1, and second lighting module C2. The sensing module A is electrically connected to the control chip B and is used to output sensing signals to the control chip B; The first lighting module C1 includes a first driving circuit D1 and a first lamp group E1. The first driving circuit D1 is electrically connected to the control chip B and the first lamp group E1. The second lighting module C2 includes a second driving circuit D2 and a second lamp group E2. The second driving circuit D2 is electrically connected to the control chip B and the second lamp group E2. The control chip B is electrically connected to the first drive circuit D1 and the second drive circuit D2, and is used to control the first drive circuit D1 or the second drive circuit D2 to work according to the sensing signal. The drive current of the first drive circuit D1 is less than the drive current of the second drive circuit D2.

[0023] The core function of the sensing module A is to collect external environmental information and convert it into electrical signals (sensing signals) to transmit to the control chip B. Specifically, it may include a light sensor (to detect ambient brightness), a motion sensor (to detect events such as object movement and human activity), etc., to provide a basis for decision-making for lighting control by sensing changes in the environment.

[0024] The control chip B performs the core control functions: it receives the sensing signals output by the sensing module A, analyzes and judges them; and sends control commands to the first driving circuit D1 or the second driving circuit D2 according to preset logic to determine which group of lighting modules to activate. Essentially, it achieves precise conversion between "sensing signal → lighting mode" through circuit logic or program settings.

[0025] The first lighting module C1 consists of a first driving circuit D1 and a first lamp group E1, and is a "low-power lighting unit": the first driving circuit D1 is responsible for providing a stable driving current to the first lamp group E1, and the current value is less than that of the second driving circuit D2; the first lamp group E1 can be composed of low-power light sources such as LEDs, which emit low-brightness light under low current driving to meet basic lighting needs (such as nighttime constant light indication, weak ambient light supplement).

[0026] The second lighting module C2 consists of a second driving circuit D2 and a second lamp group E2, and is a "high-brightness lighting unit": the second driving circuit D2 has an output current greater than that of the first driving circuit D1, which can provide sufficient power for high-power light sources; the second lamp group E2 can be composed of high-brightness LEDs or other strong light sources, and can achieve high-brightness lighting (such as strong light supplementation when an event is triggered, or large-area lighting) under high current drive.

[0027] The aforementioned dual-lamp control device uses a sensing module to output a sensing signal to a control chip, which then selectively drives the two lighting modules. This design allows the device to dynamically adjust the lighting mode based on environmental changes (such as the presence of people or moving objects): in low light conditions with no special needs, only the low-power first lighting module is activated; when a scene requiring enhanced lighting is detected, it automatically switches to the high-brightness second lighting module. Through precise triggering of the sensing signal, intelligent control that minimizes energy consumption unless absolutely necessary is achieved, ensuring lighting performance in critical scenarios while minimizing unnecessary power consumption. Therefore, it solves the problem in existing technologies where balancing lighting performance and power consumption control in low-light environments is difficult.

[0028] In some embodiments, the sensing module includes: a light sensing circuit, which includes a photosensitive acquisition unit, a signal conditioning unit, an analog-to-digital converter chip, and a comparator connected in sequence, with the output terminal of the comparator electrically connected to a first signal input terminal of a control chip; the photosensitive acquisition unit is a photoresistor or a photodiode; the signal conditioning unit includes an operational amplifier and a filter capacitor; the analog-to-digital converter chip is used to convert the ambient light signal after passing through the signal conditioning unit into digital light data and transmit it to the comparator; the comparator is used to compare the digital light data with a light threshold, and when the digital light data is greater than the light threshold, it outputs a high-level signal to the control chip, and when the digital light data is less than the light threshold, it outputs a low-level signal to the control chip.

[0029] The light sensing circuit consists of a photosensitive acquisition unit, a signal conditioning unit, an analog-to-digital converter chip, and a comparator connected in sequence. Each part implements a specific function through hardware. If a photosensitive acquisition unit uses a photoresistor, its resistance value will change with the ambient light intensity, converting the light signal into an electrical signal (analog voltage).

[0030] The operational amplifier in the signal conditioning unit amplifies weak electrical signals (e.g., amplifying a mV-level signal to a V-level signal), and the filter capacitor (e.g., a 10μF electrolytic capacitor) filters out environmental noise.

[0031] The analog-to-digital converter chip converts the amplified electrical signal into digital light data (e.g., 8-bit binary number, corresponding to a voltage range of 0~5V).

[0032] The comparator has a preset illumination threshold (e.g., a digital value corresponding to 300 lux). It compares the input digital illumination data with this threshold. If the value is lower than the threshold, it outputs a low level; otherwise, it outputs a high level. This level signal is directly transmitted to the pin of the control chip.

[0033] In some embodiments, the sensing module further includes an event detection circuit, which includes a target detection unit, a signal processing unit, and a determination output unit connected in sequence. The output terminal of the determination output unit is electrically connected to the second signal input terminal of the control chip. The target detection unit is an infrared sensor or an image sensor. The signal processing unit includes a signal amplification circuit and a filtering circuit. The determination output unit is a comparator or a logic chip that determines whether a preset event has occurred based on the signal processed by the signal processing unit. When a preset event is detected, a low-level signal is output to the control chip, and when no preset event is detected, a high-level signal is output to the control chip.

[0034] The event detection circuit consists of a target detection unit, a signal processing unit, and a decision output unit connected in sequence. It is used to detect whether a preset event has occurred, and the event detection is implemented in hardware. If the target detection unit uses an infrared sensor, it can detect infrared radiation emitted by the human body and output a weak pulse signal; if it uses an image sensor, it can output an electrical signal containing the target's features through optical imaging.

[0035] In the signal processing unit, signal amplification circuits (such as transistor amplifier circuits) enhance weak signals, and filtering circuits (such as RC low-pass filters) remove high-frequency interference to ensure signal stability.

[0036] The output unit can be a comparator, which can set a signal amplitude threshold (e.g., when a human body is detected, the signal amplitude exceeds 0.5V) and output a low level, indicating that a preset event has occurred. If it is a logic chip (e.g., Schmitt trigger + RC circuit), it can be determined by a combination of amplitude threshold + time threshold + signal shaping logic, which is suitable for complex events (e.g., "a valid human body approaching without interference"). The judgment rules for its preset events are completely fixed in the hardware circuit structure.

[0037] In addition, an AI recognition chip can be integrated into the event detection circuit. Its input is connected to the signal processing unit to receive pre-processed signals (such as amplified and filtered human infrared signals, sound signals, etc.), and its output is connected to the judgment output unit to transmit the analysis results (such as "human movement" or "not a preset event") to the judgment unit as the core basis for the final judgment. The core function of the AI ​​recognition chip is to intelligently interpret signals through an internally preset deep learning model, breaking through the limitations of traditional "threshold comparison" and thus accurately distinguishing preset events.

[0038] In some embodiments, the control chip has a built-in signal analysis module, which is composed of hardware logic circuits and is electrically connected to the control terminals of the first driving circuit and the second driving circuit. When the control chip receives a low-level signal from the light sensing circuit and a high-level signal from the event detection circuit, the signal parsing module outputs a first control signal to the first driving circuit to control the first driving circuit to turn on. When the control chip receives a low-level signal from the light sensing circuit and a low-level signal from the event detection circuit, the signal parsing module outputs a second control signal to the second driving circuit to control the second driving circuit to turn on. When the control chip receives a high-level signal from the light-sensing circuit, the signal analysis module outputs a third control signal to the first and second drive circuits, controlling both drive circuits to turn off.

[0039] The sensing module comprises two core sub-circuits: a light sensing circuit, which collects ambient light intensity in real time (converting it into "ambient light data," such as brightness values), to determine whether lighting needs to be turned on (e.g., supplemental lighting is needed at night when it's dim, but not during the day when there's sufficient light); and an event detection circuit, which monitors for the occurrence of "preset events" (such as human movement, object approach, sound triggering, etc., the specific event being defined according to the application scenario), to determine whether lighting needs to be enhanced (e.g., brightness needs to be increased when someone passes by, and maintained at a low brightness when no one is present). The signal analysis module uses the level signals output by the light sensing circuit and the event detection circuit to determine whether lighting needs to be turned on and whether enhanced lighting is needed.

[0040] In some embodiments, the driving current of the first driving circuit and the driving current of the second driving circuit are both constant currents.

[0041] The current values ​​of the two drive circuits are preset (with the first current < the second current). The control chip only needs to select which circuit to start via a switching signal (on / off), without needing to adjust the current magnitude in real time. This "fixed current + switching control" mode reduces the computational load on the control chip, simplifies circuit design, and improves the reliability of the device.

[0042] In some embodiments, the driving current of the first driving circuit is a constant current, and the driving current of the second driving circuit is a variable current.

[0043] Based on dual-lamp control, the high-brightness lighting mode is flexibly optimized, which not only retains the stability of the low-power mode, but also improves the scene adaptability of the high-brightness mode.

[0044] The first driving circuit (constant current) outputs a fixed current value (e.g., fixed at 60mA), unaffected by changes in the lamp group load (e.g., LED aging, temperature fluctuations) or slight fluctuations in the power supply voltage, providing stable low-brightness lighting only for the first lamp group.

[0045] The core function of the first light group is "low-power basic lighting" (such as a faint, constant light when no one is around at night). It does not require changes in brightness, and the fixed small current avoids the extra energy consumption caused by current fluctuations (such as redundant power consumption caused by fluctuating current). It precisely matches the needs of low-power scenarios. Moreover, when light sources such as LEDs work under a constant small current, they heat up evenly and decay slowly, which can avoid local overheating or sudden changes in brightness caused by current fluctuations, and significantly improve the service life of the first light group.

[0046] The output current of the second drive circuit (variable current) can be dynamically adjusted within a preset range (e.g., 100mA~500mA). The control chip can change its current magnitude through instructions according to actual scene requirements (e.g., event type, environmental brightness details), thereby adjusting the brightness of the second lamp group.

[0047] The core function of the second light group is "high-brightness illumination when an event is triggered" (such as when someone approaches or when monitoring and recording are required). Since scene requirements vary, the variable current design solves the problem that "a single high-brightness setting cannot adapt to multiple scenes." For example, when "human movement at a distance" is detected, a larger current (e.g., 500mA) is output to achieve wide-area strong light coverage; when "human movement at close range" is detected, a smaller current (e.g., 200mA) is output to avoid glare and reduce energy consumption. Furthermore, even in "low-light environments," there may be differences such as "weak moonlight" or "starlight." The variable current can fine-tune the brightness according to the actual darkness (e.g., 300mA under moonlight, 500mA in complete darkness), ensuring both imaging / illumination effects and avoiding excessive power consumption.

[0048] To achieve variable current control of the second drive circuit, the detected preset events can be classified in the event detection circuit. The output unit determines the level signal of different ranges according to the preset events of different levels. When the light sensing circuit outputs a low level signal to the control chip (i.e., the digital light data is less than the light threshold, that is, the light conditions are poor), the control chip can control the second drive circuit to output different levels of drive current according to the level signal of different ranges output by the event detection circuit.

[0049] In some embodiments, the first driving circuit includes a constant current module, a current-limiting resistor, and a sensing control switch; the power input terminal of the constant current module is connected to a DC power supply, and the current output terminal is electrically connected to the anode of the first lamp group through the current-limiting resistor; the enable terminal of the constant current module is electrically connected to one end of the sensing control switch, and the other end of the sensing control switch is electrically connected to the output terminal of the control chip; the ground terminal of the sensing control switch is grounded through a pull-down resistor.

[0050] In some embodiments, the brightness of the first lamp group when it is working is less than the minimum brightness of the second lamp group when it is working.

[0051] "The brightness of the first light group when it is working is less than the minimum brightness of the second light group when it is working," meaning that the brightness ranges of the two do not overlap, and there is a clear division between the "low brightness range" and the "high brightness range." The brightness of the first lamp group is always in the "low brightness range" (e.g., 1-10 lumens). Regardless of whether its working state is stable (e.g., fixed brightness under constant current drive), its maximum brightness will not exceed the "minimum brightness threshold" of the second lamp group. The brightness of the second lamp group is always in the "high brightness range" (e.g., 20-100 lumens). Even when working in the minimum output state (e.g., the brightness corresponding to the minimum current under variable current drive), its brightness is higher than the maximum brightness of the first lamp group.

[0052] The core function of the first light group is "low-power basic lighting" (such as a faint, constant light when no one is around at night, meeting the basic requirement of "just enough light"). The core function of the second light group is "high-brightness functional lighting" (such as strong supplementary lighting when an event is triggered, meeting the requirement of "seeing details clearly"). If the brightness of the two overlaps (e.g., the first light group has a maximum of 15 lumens, and the second light group has a minimum of 10 lumens), a situation may arise where "the brightness of the first light group is close to the minimum value of the second light group"—in which case it is impossible to intuitively distinguish the modes by brightness, and it may also lead to "the power consumption of the low-power mode being close to that of the high-brightness mode" (violating the original intention of low-power design), or "the minimum brightness of the high-brightness mode being insufficient" (failing to meet functional requirements). Setting the brightness of the first light group when it is working < the minimum brightness of the second light group when it is working makes the functional boundaries of the two modes completely clear, avoiding the contradictions caused by functional overlap.

[0053] In some embodiments, the control chip includes a clock unit, the signal output terminal of which is electrically connected to the timing control terminal of the second driving circuit.

[0054] The clock unit is the time reference source inside the control chip. Its core function is to generate stable and accurate periodic electrical signals (such as pulse signals) and transmit them to the "timing control terminal" of the second drive circuit through the signal output terminal.

[0055] Reference timing refers to a clock signal with a fixed frequency (such as 1MHz or 10kHz) and duty cycle, which provides a time reference for the current output, state switching and other operations of the second drive circuit.

[0056] The clock unit is directly electrically connected to the timing control terminal of the second drive circuit to ensure that the timing signal is transmitted without delay or distortion.

[0057] As the core module of high-brightness lighting (especially when using a variable current design), the stability and adjustment accuracy of the current output of the second driving circuit depend on strict timing control. The role of the clock unit is reflected in the following aspects: To ensure precise adjustment of the variable current, if the second drive circuit uses PWM (Pulse Width Modulation) to regulate the current (controlling the average current by changing the duty cycle of the pulse signal), the clock unit provides a reference timing that serves as the frequency reference for the PWM signal. The clock frequency determines the period of the PWM signal, ensuring stable pulse frequency (avoiding a decrease in current regulation accuracy due to frequency fluctuations). The control chip calculates different duty cycles based on the reference timing (e.g., a 30% duty cycle corresponds to 30μs on and 70μs off), making the brightness adjustment of the second lamp group more precise (e.g., a smooth transition from 20 lumens to 80 lumens).

[0058] To achieve controllable timing of event response, when a preset event (such as human movement) is detected, the second driving circuit needs to work according to the preset logic (such as "continuously bright for 5 seconds after triggering, then delaying to turn off"). The reference timing provided by the clock unit is used for: precise timing (such as the duration of 5 seconds is achieved by counting clock pulses, and counting 50 million pulses at a 10MHz clock is 0.5 seconds); and controlling the timing of state switching (such as "delaying to turn off for 3 seconds after the event ends", the delay time is accumulated by the clock unit to avoid functional failure caused by turning off too early or too late).

[0059] To enhance the circuit's anti-interference capability, the second drive circuit operates under high current (compared to the first drive circuit), making it susceptible to power supply noise and electromagnetic interference, which can lead to timing disorders in the internal circuitry (such as unstable turn-on / turn-off times of the switching transistors). The stable reference timing provided by the clock unit ensures that critical operations of the drive circuit (such as current sampling and feedback adjustment) are strictly synchronized with the reference clock, reducing timing deviations caused by interference and ensuring stable output current (such as avoiding brightness flickering due to timing disorders).

[0060] In one embodiment, a camera device is provided, the camera device including a dual-lamp control device as described in any of the preceding claims.

[0061] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A dual-lamp control device, characterized in that, Includes a control chip, a sensor module, a first lighting module, and a second lighting module; The sensing module is electrically connected to the control chip and is used to output sensing signals to the control chip; The first lighting module includes a first driving circuit and a first lamp group, wherein the first driving circuit is electrically connected to the control chip and the first lamp group; The second lighting module includes a second driving circuit and a second lamp group, wherein the second driving circuit is electrically connected to the control chip and the second lamp group; The control chip is electrically connected to the first driving circuit and the second driving circuit, and is used to control the first driving circuit or the second driving circuit to work according to the sensing signal, wherein the driving current of the first driving circuit is less than the driving current of the second driving circuit.

2. The dual-lamp control device according to claim 1, characterized in that, The sensing module includes: A light sensing circuit, comprising a light-sensitive acquisition unit, a signal conditioning unit, an analog-to-digital converter chip, and a comparator connected in sequence, wherein the output terminal of the comparator is electrically connected to the first signal input terminal of the control chip; The photosensitive acquisition unit is a photoresistor or a photodiode; The signal conditioning unit includes an operational amplifier and a filter capacitor; The analog-to-digital converter chip is used to convert the signal after signal conditioning unit into digital illumination data and transmit it to the comparator; The comparator is used to compare digital illumination data with an illumination threshold. When the digital illumination data is greater than the illumination threshold, a high-level signal is output to the control chip. When the digital illumination data is less than the illumination threshold, a low-level signal is output to the control chip.

3. The dual-lamp control device according to claim 2, characterized in that, The sensing module also includes: An event detection circuit, comprising a target detection unit, a signal processing unit, and a determination output unit connected in sequence, wherein the output terminal of the determination output unit is electrically connected to the second signal input terminal of the control chip; The target detection unit is an infrared sensor or an image sensor; The signal processing unit includes a signal amplification circuit and a filtering circuit; The determination output unit is a comparator or logic chip. It determines whether a preset event has occurred based on the signal processed by the signal processing unit. When the preset event is detected, it outputs a low-level signal to the control chip. When the preset event is not detected, it outputs a high-level signal to the control chip.

4. The dual-lamp control device according to claim 3, characterized in that, The control chip has a built-in signal analysis module, which is composed of hardware logic circuits and is electrically connected to the control terminals of the first driving circuit and the second driving circuit. When the control chip receives a low-level signal from the light-sensing circuit and a high-level signal from the event detection circuit, the signal parsing module outputs a first control signal to the first driving circuit to control the first driving circuit to turn on. When the control chip receives a low-level signal from the light sensing circuit and a low-level signal from the event detection circuit, the signal parsing module outputs a second control signal to the second driving circuit to control the second driving circuit to turn on. When the control chip receives a high-level signal from the light-sensing circuit, the signal analysis module outputs a third control signal to the first drive circuit and the second drive circuit, controlling both the first drive circuit and the second drive circuit to be turned off.

5. The dual-lamp control device according to claim 1, characterized in that, The driving current of the first driving circuit and the driving current of the second driving circuit are both constant currents.

6. The dual-lamp control device according to claim 1, characterized in that, The driving current of the first driving circuit is a constant current, and the driving current of the second driving circuit is a variable current.

7. The dual-lamp control device according to claim 2, characterized in that, The first driving circuit includes a constant current module, a current limiting resistor, and a sensing control switch; The power input terminal of the constant current module is connected to a DC power supply, and the current output terminal is connected to the anode of the first lamp group through a current-limiting resistor. The enable terminal of the constant current module is electrically connected to one end of the inductive control switch, and the other end of the inductive control switch is electrically connected to the output terminal of the control chip. The grounding terminal of the inductive control switch is grounded through a pull-down resistor.

8. The dual-lamp control device according to claim 1, characterized in that, The brightness of the first lamp group when it is working is less than the minimum brightness of the second lamp group when it is working.

9. The dual-lamp control device according to claim 1, characterized in that, The control chip includes: The clock unit has its signal output terminal electrically connected to the timing control terminal of the second driving circuit.

10. A camera device, characterized in that, Includes the dual-lamp control device as described in any one of claims 1-9.

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