A lighting device control circuit, control method, and lighting device

Abstract

The application provides a lighting device control circuit, a control method and a lighting device, which are applied to the technical field of intelligent traffic, the circuit is provided with a first light collection device and a sound collection device, light brightness is collected through the first light collection device, and environmental sound is collected through the sound collection device, in the case that the light brightness meets a first preset condition and the environmental sound meets a second preset condition, a second switch is controlled to be closed, so that a driving circuit of the lighting device is powered on and drives a light source in the lighting device to work, through the lighting device control circuit, the environmental light brightness and the environmental sound can be comprehensively considered, compared with the control mode of controlling the lighting device to work according to fixed time in the prior art, the application can more flexibly adapt to environmental changes, realizes the control of the lighting device according to the environmental changes, and further improves the lighting effect.

Description

Technical Field

[0001] This invention relates to the field of intelligent transportation technology, and in particular to a lighting device control circuit, control method, and lighting device. Background Technology

[0002] In real life, most roads are equipped with lighting devices on both sides to provide illumination for drivers at night or in other environments with insufficient light, improve visibility in the driving environment, and enhance driving safety.

[0003] To save energy consumed by lighting devices, on-time and off-time are usually set. When the on-time is reached, the lighting device is controlled to work, and when the off-time is reached, the lighting device is controlled to turn off.

[0004] However, controlling lighting devices according to fixed on / off times is difficult to meet the needs of changing environments in practical applications. For example, in cloudy or rainy weather when visibility is low, or in autumn and winter when daylight hours are shorter, controlling the lighting devices according to the set on / off times will obviously fail to provide effective illumination and may even reduce driving safety. Summary of the Invention

[0005] This invention provides a lighting device control circuit, control method, and lighting device, which controls the lighting device according to environmental changes to improve the lighting effect.

[0006] To achieve the above objectives, the technical solution provided in this application is as follows:

[0007] In a first aspect, the present invention provides a lighting device control circuit, comprising: a first light-collecting device, a sound-collecting device, a first switch, a second switch, and a controller, wherein...

[0008] The power input terminal of the first light-collecting device is connected to the first power supply, and the signal output terminal of the first light-collecting device is connected to the first signal acquisition terminal of the controller.

[0009] The input terminal of the first switch is connected to the second power supply, the output terminal of the first switch is connected to the power input terminal of the sound acquisition device, and the control terminal of the first switch is connected to the first control signal output terminal of the controller.

[0010] The signal output terminal of the sound acquisition device is connected to the second signal acquisition terminal of the controller;

[0011] The input terminal of the second switch is connected to the third power supply, the output terminal of the second switch is connected to the drive terminal of the driving circuit of the lighting device, and the control terminal of the second switch is connected to the second control signal output terminal of the controller.

[0012] The controller is used to control the second switch to close when the light brightness fed back by the first light acquisition device meets a first preset condition and the ambient sound fed back by the sound acquisition device meets a second preset condition, so as to power on the driving circuit and drive the light source to work.

[0013] Optionally, the lighting device control circuit provided in the first aspect of the present invention further includes: a third switch and a second light-collecting device, wherein,

[0014] The input terminal of the third switch is connected to the fourth power supply, the output terminal of the third switch is connected to the power input terminal of the second light acquisition device, and the control terminal of the third switch is connected to the third control signal output terminal of the controller.

[0015] The signal output terminal of the second light acquisition device is connected to the third signal acquisition terminal of the controller.

[0016] Optionally, the first switch, the second switch, and the third switch are switches with the same circuit structure, each switch comprising: a first switching transistor, a second switching transistor, and a first resistor, wherein,

[0017] One end of the first resistor is connected to the corresponding power supply, and the other end of the first resistor is grounded through the first switching transistor.

[0018] The control terminal of the first switching transistor serves as the control terminal of the corresponding switch.

[0019] The input terminal of the second switching transistor serves as the input terminal of the corresponding switch, the output terminal of the second switching transistor serves as the output terminal of the corresponding switch, and the control terminal of the second switching transistor is connected to the series connection point of the first resistor and the first switching transistor.

[0020] Optionally, the switch further includes: an input filtering circuit, the input filtering circuit including a second resistor and a first capacitor, wherein,

[0021] One end of the second resistor serves as the control terminal of the corresponding switch, and the other end of the second resistor is grounded through the first capacitor;

[0022] The control terminal of the first switching transistor is connected to the series connection point of the second resistor and the first capacitor.

[0023] Optionally, the switch further includes: an output filter capacitor, wherein,

[0024] One end of the output filter capacitor is connected to the output terminal of the corresponding switch, and the other end of the output filter capacitor is grounded.

[0025] Optionally, the switch further includes a soft-start circuit, which includes a third resistor and a second capacitor, wherein...

[0026] One end of the second capacitor is connected to the input terminal of the corresponding switch, and the other end of the second capacitor is connected to the series connection point of the first switch and the first resistor via the third resistor.

[0027] The control terminal of the second switch is connected to the series connection point of the third resistor and the second capacitor.

[0028] In a second aspect, the present invention provides a lighting device control method, applied to a controller in a lighting device control circuit according to any one of the first aspects of the present invention, the method comprising:

[0029] Obtain light intensity;

[0030] If the light intensity meets the first preset condition, the first switch in the control circuit of the lighting device is closed, and ambient sound is acquired.

[0031] If the ambient sound meets the second preset condition, the second switch in the control circuit of the lighting device is closed to power on the driving circuit of the lighting device and drive the light source to work.

[0032] Optionally, if the lighting device control circuit includes a third switch and a second light-collecting device, the step of acquiring light brightness includes:

[0033] Obtain the first light intensity fed back by the first light acquisition device in the control circuit of the lighting device;

[0034] If the brightness of the first light source is less than the first light source brightness threshold, the third switch in the control circuit of the lighting device is closed, and the second light source brightness fed back by the second light source acquisition device in the control circuit of the lighting device is obtained.

[0035] Optionally, if the ambient sound meets the second preset condition, controlling the second switch in the lighting device control circuit to close includes:

[0036] The second light intensity fed back by the second light acquisition device is obtained again;

[0037] If the brightness of the second light source is greater than the second light source brightness threshold, the ambient sound fed back by the sound acquisition device will be acquired again.

[0038] If the ambient sound obtained again is greater than the preset sound threshold, the second switch in the control circuit of the lighting device is closed.

[0039] Thirdly, the present invention provides a lighting device, comprising: a light source, a driving circuit, and a lighting device control circuit as described in any one of the first aspects of the present invention, wherein...

[0040] The light source is electrically connected to the driving circuit and is used for illumination under the drive of the driving circuit;

[0041] The driving end of the driving circuit is connected to the control end of the second switch in the lighting device control circuit.

[0042] The lighting device control circuit provided by this invention includes a first light-collecting device and a sound-collecting device. The first light-collecting device collects light intensity, and the sound-collecting device collects ambient sound. When the light intensity meets a first preset condition and the ambient sound meets a second preset condition, a second switch is closed, energizing the driving circuit of the lighting device and driving the light source in the lighting device to work. The lighting device control circuit provided by this invention can comprehensively consider ambient light intensity and ambient sound. Compared with the existing control method of controlling the lighting device to work according to a fixed time, it can more flexibly adapt to environmental changes, realize the control of the lighting device according to environmental changes, and thus improve the lighting effect. Attached Figure Description

[0043] To more clearly illustrate the technical solutions within the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a circuit topology diagram of a lighting device control circuit provided in an embodiment of the present invention;

[0045] Figure 2 This is a circuit topology diagram of another lighting device control circuit provided in an embodiment of the present invention;

[0046] Figure 3 This is a flowchart of a lighting device control method provided in an embodiment of the present invention;

[0047] Figure 4 This is a flowchart of another lighting device control method provided in an embodiment of the present invention. Detailed Implementation

[0048] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0049] Optional, see Figure 1 , Figure 1 This is a circuit topology diagram of a lighting device control circuit provided in an embodiment of the present invention. The lighting device control circuit provided in this embodiment of the present invention may include: a first light-collecting device, a sound-collecting device, a first switch, a second switch, and a controller, wherein...

[0050] The power input terminal of the first light-gathering device is connected to the first power supply Vcc1, and the signal output terminal of the first light-gathering device is connected to the first signal acquisition terminal I1 of the controller. In use, the first light-gathering device is used to collect light intensity and feed back the corresponding light intensity data to the controller, providing basic data for the controller's control process.

[0051] The input terminal of the first switch is connected to the second power supply Vcc2, the output terminal of the first switch is connected to the power input terminal of the sound acquisition device, and the control terminal of the first switch is connected to the first control signal output terminal O1 of the controller. The signal output terminal of the sound acquisition device is connected to the second signal acquisition terminal I2 of the controller. In use, the controller can output a control signal to the control terminal of the first switch according to preset control signal output conditions to control the working state of the first switch, thereby controlling the working state of the sound acquisition device. Specifically, when the controller outputs a control signal to close the first switch, the second power supply Vcc2 is connected to the power input terminal of the sound acquisition device, the sound acquisition device is powered on and begins to work, collecting ambient sound and feeding back the collected ambient sound to the controller through the second signal acquisition terminal I2; correspondingly, when the controller outputs a control signal to open the first switch, the second power supply Vcc2 is disconnected from the power input terminal of the sound acquisition device, and the sound acquisition device loses power and stops working.

[0052] Optionally, the sources of ambient sounds collected by the sound acquisition device will vary depending on the environment in which the lighting device is used. For example, when the lighting device is used as a street light, the ambient sounds collected by the sound acquisition device should at least include tire noise and horn sounds from vehicles passing by the street light, as well as sounds made by pedestrians, bicycles, electric vehicles, and other traffic participants passing by the street light. It is conceivable that when the sound acquisition device is used to collect the sounds of pedestrians, bicycles, and electric vehicles passing by, to improve the sound acquisition effect, the sound acquisition device can be directly installed on the ground, street light poles, roadside railings, etc.

[0053] As for the specific selection of the sound acquisition device, one or more microphones can be used. Of course, other devices that can achieve sound acquisition function in the existing technology are also optional, which will not be elaborated here.

[0054] The input terminal of the second switch is connected to the third power supply Vcc3, and the output terminal of the second switch is connected to the drive terminal of the lighting device's drive circuit. Simultaneously, the control terminal of the second switch is connected to the second control signal output terminal 02 of the controller. The controller can control the operating state of the second switch through the second control signal output terminal 02, thereby controlling the on / off state of the light source, i.e., controlling the operating state of the lighting device. Specifically, when the light brightness fed back by the first light acquisition device meets the first preset condition (e.g., the light brightness is less than the first light brightness threshold), the controller controls the first switch to close, energizing the sound acquisition device and feeding back ambient sound to the controller. When the ambient sound fed back by the sound acquisition device meets the second preset condition (e.g., the ambient sound is greater than the preset sound threshold), the controller controls the second switch to close, connecting the third power supply Vcc3 to the lighting device's drive circuit, energizing the drive circuit and driving the light source in the lighting device.

[0055] Correspondingly, if the light brightness fed back by the first light acquisition device does not meet the first preset condition, the controller controls the first switch to open, the sound acquisition device cannot be connected to the second power supply Vcc2 and cannot acquire ambient sound, the controller then controls the second switch to open, the driving circuit of the lighting device loses power, and the light source of the lighting device works.

[0056] Alternatively, if the light intensity fed back by the first light acquisition device meets the first preset condition, the controller controls the first switch to close, the sound acquisition device is powered on and works, and feeds back the ambient sound to the controller. If the ambient sound does not meet the second preset condition, the controller will also control the second switch to open, the driving circuit of the lighting device cannot establish a connection with the third power supply Vcc3, and the light source of the lighting device cannot work.

[0057] Optionally, the control signals output by the controller to the first switch and the second switch can be selected according to the specific switch circuit configuration.

[0058] It is conceivable that in practical applications, the power supply connected to the first light-collecting device, the first switch, the second switch, and the lighting device driving circuit can be connected to the same power supply, or it can be connected to different power supplies, as long as the above working process can be achieved. The different names used in this embodiment are only for the purpose of clearly explaining the connection relationship of the control circuit.

[0059] In summary, the lighting device control circuit provided in this embodiment of the invention includes a first light-collecting device and a sound-collecting device. The first light-collecting device collects light intensity, and the sound-collecting device collects ambient sound. When the light intensity meets a first preset condition and the ambient sound meets a second preset condition, the second switch is closed, energizing the driving circuit of the lighting device and driving the light source in the lighting device to work. The lighting device control circuit provided in this embodiment of the invention can comprehensively consider ambient light intensity and ambient sound. Compared with the existing control method of controlling the lighting device to work according to a fixed time, it can more flexibly adapt to environmental changes, realize the control of the lighting device according to environmental changes, and thus improve the lighting effect.

[0060] Optional, Figure 1 The illustrated embodiment also shows optional circuit structures for the first switch and the second switch, such as... Figure 1 As shown, the first switch and the second switch are switches with the same circuit structure. Each switch includes: a first switching transistor Q1, a second switching transistor Q2, and a first resistor R1.

[0061] One end of the first resistor R1 is connected to the second power supply Vcc2, and the other end of the first resistor R1 is grounded through the first switch Q1. The control terminal of the first switch Q1 serves as the control terminal of the corresponding switch (here, the first switch or the second switch). The input terminal of the second switch Q2 serves as the input terminal of the corresponding switch and is connected to the second power supply Vcc2. The output terminal of the second switch Q2 serves as the output terminal of the corresponding switch. The control terminal of the second switch Q2 is connected to the series connection point of the first resistor R1 and the first switch Q1.

[0062] Specifically, for the first switch, the control terminal of the first switch transistor Q1 is connected to the first control signal output terminal 01 of the controller, and the output terminal of the second switch transistor Q2 is connected to the power input terminal of the sound acquisition device; for the second switch, the control terminal of the first switch transistor Q1 is connected to the second control signal output terminal 02 of the controller, and the output terminal of the second switch transistor Q2 is connected to the drive terminal of the driving circuit of the lighting device.

[0063] for Figure 1Regarding the circuit structure of the first and second switches shown, when the control signal output by the controller is high, the first switch Q1 is turned on, which in turn controls the second switch Q2 to be turned on, so that the power supply is connected to the power input terminal of the drive circuit or the sound acquisition device; when the control signal output by the controller is low, both the first switch Q1 and the second switch Q2 are in the off state.

[0064] Optional, Figure 1 The first switch and the second switch shown in the embodiment further include an input filter circuit, which includes a second resistor R2 and a first capacitor C1.

[0065] When the first and second switches include input filtering circuits, one end of the second resistor R2 serves as the control terminal of the corresponding switch and is connected to the control signal output terminal of the controller. The other end of the second resistor R2 is grounded via the first capacitor C1. The control terminal of the first switching transistor Q1 is connected to the series connection point of the second resistor R2 and the first capacitor C1. By setting up the input filtering circuit, the control signal output by the controller can be filtered to remove high-frequency noise that may be present in the control signal, ensuring that the first and second switches do not malfunction.

[0066] Optional, Figure 1 In the illustrated embodiment, both the first switch and the second switch further include an output filter capacitor C2. One end of the output filter capacitor C2 is connected to the output terminal of the corresponding switch, specifically, to the output terminal of the second switch Q2, and the other end of the output filter capacitor C2 is grounded. The output filter capacitor C2 filters the control signals output by the first switch and the second switch, preventing malfunctions in subsequent circuits.

[0067] Optional, Figure 1 The first switch and the second switch shown in the embodiment both further include a soft-start circuit. The soft-start circuit includes a third resistor R3 and a second capacitor C3.

[0068] When the first and second switches include a soft-start circuit, one end of the second capacitor C3 is connected to the input terminal of the corresponding switch, and the other end of the second capacitor C3 is connected via the third resistor R3 to the series connection point of the first switch Q1 and the first resistor R1. The control terminal of the second switch Q2 is connected to the series connection point of the third resistor R3 and the second capacitor C3. That is, the third resistor R3 is connected in series between the control terminal of the second switch Q2 and the output terminal of the first switch Q1, while one end of the second capacitor C3 is connected to the input terminal of the corresponding switch, and the other end of the second capacitor C3 is connected to the output terminal of the first switch Q1 (i.e., the series connection point of the first switch Q1 and the third resistor R3). The soft-start circuit protects the second switch Q2 in the corresponding switch during power-on.

[0069] In practical applications, especially when the lighting device is used as a street light, there is a scenario where, at night or in rainy weather, the light intensity detected by the first light sensor is lower than a certain threshold. The controller then closes the first switch, and the sound acquisition device begins collecting ambient sound. However, if there is significant ambient noise, such as wind, when no vehicles are passing by, the sound acquisition device may detect ambient noise levels exceeding a preset threshold. This could cause the controller to malfunction, closing the second switch and turning on the lighting device. This is particularly problematic at night when it is windy; the lighting device might remain on continuously, which is clearly energy-inefficient.

[0070] To address the above problems, embodiments of the present invention also provide another lighting device control circuit; optionally, see [link to relevant documentation]. Figure 2 , Figure 2 This is a circuit topology diagram of another lighting device control circuit provided in an embodiment of the present invention. The circuit topology is... Figure 1 Based on the embodiment shown, a third switch and a second light-collecting device are also included.

[0071] Specifically, the input terminal of the third switch is connected to the fourth power supply Vcc4, the output terminal of the third switch is connected to the power input terminal of the second light acquisition device, the control terminal of the third switch is connected to the third control signal output terminal O3 of the controller, and the signal output terminal of the second light acquisition device is connected to the third signal acquisition terminal I3 of the controller.

[0072] Optionally, in this embodiment of the invention, the first light-collecting device can be oriented towards the sky to collect ambient light intensity, and the second light-collecting device can be oriented towards the direction from which vehicles are approaching on the road to detect vehicle lights. The location of the sound-collecting device is as described above and will not be repeated here.

[0073] Optionally, both the first and second light-collecting devices can be light sensors. Of course, the first and second light-collecting devices can use the same type of light sensor or different types of light sensors; this invention does not limit this.

[0074] It should be noted that the circuit structure of the third switch is exactly the same as that of the first and second switches. The optional configuration of the third switch can be implemented by referring to the above-mentioned construction method of the first and second switches, which will not be repeated here.

[0075] The following is combined with Figure 2 The topology diagram of the control circuit shown illustrates the control process of the lighting device control circuit provided in this embodiment of the invention:

[0076] The first light-collecting device collects ambient light. When the controller determines that the brightness of the first light-collecting device is less than the first light-collecting brightness threshold, the controller first controls the third switch to close, and the second light-collecting device starts to work, collecting vehicle lights. If the brightness of the second light-collecting device is greater than the second light-collecting brightness threshold, the controller controls the first switch to close, and the sound-collecting device is powered on to collect ambient sound. When the ambient sound collected by the sound-collecting device is greater than the preset sound threshold, the controller controls the second switch to close, thereby powering on the lighting device to provide illumination for passing vehicles.

[0077] Correspondingly, if any of the above three conditions are not met, the controller will not control the lighting device to work.

[0078] The lighting device control circuit provided by the embodiments of the present invention not only considers the ambient light brightness and ambient sound, but also the brightness of vehicle headlights. Only when the dual conditions of insufficient ambient light and the approach of a vehicle are met, and further judgment is made based on ambient sound, will the lighting device be controlled to work. This can effectively improve the accuracy of the lighting device control process and achieve the purpose of saving energy.

[0079] Combination Figure 1 The illustrated embodiments and Figure 2 As shown in the embodiments, it should be noted that the first preset condition described in the embodiments of the present invention varies depending on the applicable control circuit. Specifically, for Figure 1 In the illustrated embodiment, the first preset condition is that the brightness of the first light source fed back by the first light-collecting device is less than a first light-brightness threshold; for Figure 2 In the illustrated embodiment, the first preset condition is that the brightness of the first light source fed back by the first light-collecting device is less than a first light-brightness threshold, and the brightness of the second light source fed back by the second light-collecting device is greater than a second light-brightness threshold. In actual use, this can be set according to the specific circuit results.

[0080] The lighting device control method provided by the embodiments of the present invention is described below. The lighting device control method provided by the embodiments of the present invention is applied to the lighting device control circuit provided in any of the above embodiments, specifically, it applies the controller in the lighting device control circuit.

[0081] Optional, see Figure 3 , Figure 3 This is a flowchart of a lighting device control method provided in an embodiment of the present invention. The flow of the control method provided in this embodiment may include:

[0082] S100, obtains light brightness.

[0083] After the controller and the first light-collecting device in the control circuit are powered on, the controller can obtain the light brightness through the first light-collecting device.

[0084] S110: Determine whether the light brightness meets the first preset condition. If yes, execute S120; otherwise, return to S100.

[0085] Optionally, the control logic presets a first light brightness threshold. If the light brightness fed back by the first light acquisition device is less than the first light brightness threshold, it is determined that the first preset condition is met, and S120 is executed. Conversely, if the light brightness fed back by the first light acquisition device is not less than the first light brightness threshold, it returns to execute S100 and continues to acquire light brightness.

[0086] S120, the first switch in the control circuit of the lighting device is closed, and ambient sound is acquired.

[0087] Under the condition that the first preset condition is met, the first switch can be closed to turn on the sound acquisition device and acquire ambient sound.

[0088] S130: Determine whether the ambient sound meets the second preset condition. If yes, execute S140; otherwise, return to execute S120.

[0089] After the sound acquisition device starts working, if the acquired ambient sound is greater than the preset sound threshold, it is determined that the second preset condition is met, and S140 is executed; otherwise, it returns to execute S120 to continue acquiring ambient sound.

[0090] S140, the second switch in the control circuit of the lighting device is closed to power on the drive circuit of the lighting device and drive the light source to work.

[0091] When the second preset condition is met, the controller can close the second switch, connecting the driving circuit of the lighting device to the power supply, thereby driving the light source in the lighting device to work and provide lighting.

[0092] In summary, the lighting device control method provided by the embodiments of the present invention comprehensively considers ambient light brightness and ambient sound. The lighting device will only be controlled to work when the light brightness meets the first preset condition and the ambient sound meets the second preset condition. Compared with the control method of controlling the lighting device to work according to a fixed time in the prior art, it can more flexibly adapt to environmental changes, realize the control of the lighting device according to environmental changes, and thus improve the lighting effect.

[0093] Optional, for Figure 2 The embodiment shown provides a control circuit for a lighting device control circuit. This embodiment also provides another control method for a lighting device control circuit. See [link to previous document]. Figure 4 , Figure 4 This is a flowchart of another lighting device control method provided in an embodiment of the present invention, which may include:

[0094] S200, Obtain the first light intensity fed back by the first light acquisition device in the lighting device control circuit.

[0095] After the controller and the first light-collecting device in the control circuit are powered on, the controller can obtain the first light brightness through the first light-collecting device.

[0096] S210: Determine whether the brightness of the first light source is less than the first light source brightness threshold. If yes, execute S220; otherwise, return to execute S200.

[0097] Optionally, the control logic presets a first light brightness threshold. If the first light brightness is less than the first light brightness threshold, it means that the ambient light is insufficient, possibly at night or in other situations that may reduce the ambient light. In this case, S120 is executed. Conversely, if the first light brightness fed back by the first light acquisition device is not less than the first light brightness threshold, then return to execute S200 and continue to acquire the first light brightness.

[0098] S220, the third switch in the control circuit of the lighting device is closed, and the second light intensity fed back by the second light acquisition device in the control circuit of the lighting device is obtained.

[0099] When the first light intensity is less than the first light intensity threshold, the third switch is closed, the second light acquisition device starts to work, and the controller obtains the second light intensity fed back by the second light acquisition device in the lighting device control circuit.

[0100] S230: Determine whether the brightness of the second light is greater than the second light brightness threshold. If yes, execute S240; otherwise, return to execute S220.

[0101] Optionally, the control logic presets a second light brightness threshold. If the second light brightness is greater than the second light brightness threshold, it indicates that a vehicle may be approaching on the road, and in this case, S240 is executed. Conversely, if the second light brightness fed back by the second light acquisition device is not greater than the second light brightness threshold, then return to execute S220 and continue to acquire the second light brightness.

[0102] S240, the first switch in the control circuit of the lighting device is closed, and ambient sound is acquired.

[0103] When the brightness of the first light source is less than the first light source brightness threshold and the brightness of the second light source is greater than the second light source brightness threshold, the first switch can be closed to activate the sound acquisition device and acquire ambient sound.

[0104] S250: Determine whether the ambient sound meets the second preset condition. If yes, execute S260; otherwise, return to execute S240.

[0105] After the sound acquisition device starts working, if the acquired ambient sound is greater than the preset sound threshold, it is determined that the second preset condition is met, and S260 is executed; otherwise, it returns to execute S240 to continue acquiring ambient sound.

[0106] S260, the second switch in the control circuit of the lighting device is closed to power on the drive circuit of the lighting device and drive the light source to work.

[0107] When the second preset condition is met, the controller can close the second switch, connecting the driving circuit of the lighting device to the power supply, thereby driving the light source in the lighting device to work and provide lighting.

[0108] In summary, the lighting device control method provided by the embodiments of the present invention not only considers ambient light brightness and ambient sound, but also takes into account the brightness of vehicle headlights. The lighting device is only controlled to work when both the ambient light and the approaching vehicle conditions are met, and further judgment is made based on ambient sound. This can effectively improve the accuracy of the lighting device control process and achieve the goal of saving energy.

[0109] It is conceivable that, in the embodiments of the present invention, the first preset condition is specifically: the brightness of the first light source fed back by the first light source acquisition device is less than the first light source brightness threshold, and the brightness of the second light source fed back by the second light source acquisition device is greater than the second light source brightness threshold.

[0110] Optionally, to further improve the accuracy of the control process, the process of controlling the closing of the second switch can be further optimized after executing S250 and determining that the ambient sound meets the second preset condition.

[0111] Specifically, after determining that the ambient sound meets the second preset condition, the second light intensity fed back by the second light acquisition device is acquired again after a preset delay. If the acquired second light intensity is still greater than the second light intensity threshold, the ambient sound fed back by the sound acquisition device is acquired again. If the acquired ambient sound is greater than the preset sound threshold, the second switch in the lighting device control circuit is finally closed, and the lighting device starts working.

[0112] Optionally, embodiments of the present invention also provide a lighting device, including: a light source, a driving circuit, and a lighting device control circuit provided in any of the above embodiments, wherein,

[0113] The light source is electrically connected to the driving circuit and is used for illumination under the drive of the driving circuit;

[0114] The driving end of the driving circuit is connected to the control end of the second switch in the lighting device control circuit.

[0115] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0116] Those skilled in the art will further recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both. To clearly illustrate the interchangeability of hardware and software, the components and steps of the various examples have been generally described in terms of functionality in the foregoing description. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementations should not be considered beyond the scope of this invention.

[0117] The steps of the methods or algorithms described in conjunction with the embodiments disclosed herein can be implemented directly by hardware, a software module executed by a processor, or a combination of both. The software module can be located in random access memory (RAM), main memory, read-only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or any other form of storage medium known in the art.

[0118] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the core spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A lighting device control circuit, characterized in that, include: The system comprises a first light-gathering device, a sound-gathering device, a first switch, a second switch, a controller, a third switch, and a second light-gathering device. The power input terminal of the first light-collecting device is connected to a first power source, and the signal output terminal of the first light-collecting device is connected to the first signal acquisition terminal of the controller; the first light-collecting device faces the sky and is used to collect ambient light brightness. The input terminal of the first switch is connected to the second power supply, the output terminal of the first switch is connected to the power input terminal of the sound acquisition device, and the control terminal of the first switch is connected to the first control signal output terminal of the controller. The signal output terminal of the sound acquisition device is connected to the second signal acquisition terminal of the controller; The input terminal of the second switch is connected to the third power supply, the output terminal of the second switch is connected to the drive terminal of the driving circuit of the lighting device, and the control terminal of the second switch is connected to the second control signal output terminal of the controller. The input terminal of the third switch is connected to the fourth power supply, the output terminal of the third switch is connected to the power input terminal of the second light-collecting device, and the control terminal of the third switch is connected to the third control signal output terminal of the controller; the signal output terminal of the second light-collecting device is connected to the third signal acquisition terminal of the controller; the second light-collecting device faces the direction of road vehicle travel and is used to detect vehicle lights; The controller is configured to close the third switch when the light intensity reported by the first light acquisition device is less than a first light intensity threshold, and to close the first switch when the light intensity reported by the second light acquisition device is greater than a second light intensity threshold. If the ambient sound reported by the sound acquisition device meets a second preset condition, and after a preset time delay, the controller re-acquires the ambient sound reported by the sound acquisition device if the light intensity reported by the second light acquisition device is still greater than the second light intensity threshold. If the re-acquired ambient sound reported by the sound acquisition device meets a preset sound threshold, the controller controls the second switch to close, thereby powering on the driving circuit and driving the light source to operate.

2. The lighting device control circuit according to claim 1, characterized in that, The first switch, the second switch, and the third switch are switches with the same circuit structure. Each switch includes a first switching transistor, a second switching transistor, and a first resistor. One end of the first resistor is connected to the corresponding power supply, and the other end of the first resistor is grounded through the first switching transistor. The control terminal of the first switching transistor serves as the control terminal of the corresponding switch. The input terminal of the second switching transistor serves as the input terminal of the corresponding switch, the output terminal of the second switching transistor serves as the output terminal of the corresponding switch, and the control terminal of the second switching transistor is connected to the series connection point of the first resistor and the first switching transistor.

3. The lighting device control circuit according to claim 2, characterized in that, The switch further includes: an input filtering circuit, which comprises a second resistor and a first capacitor, wherein... One end of the second resistor serves as the control terminal of the corresponding switch, and the other end of the second resistor is grounded through the first capacitor; The control terminal of the first switching transistor is connected to the series connection point of the second resistor and the first capacitor.

4. The lighting device control circuit according to claim 2, characterized in that, The switch further includes: an output filter capacitor, wherein... One end of the output filter capacitor is connected to the output terminal of the corresponding switch, and the other end of the output filter capacitor is grounded.

5. The lighting device control circuit according to claim 2, characterized in that, The switch further includes a soft-start circuit, which comprises a third resistor and a second capacitor, wherein... One end of the second capacitor is connected to the input terminal of the corresponding switch, and the other end of the second capacitor is connected to the series connection point of the first switch and the first resistor via the third resistor. The control terminal of the second switch is connected to the series connection point of the third resistor and the second capacitor.

6. A method for controlling a lighting device, characterized in that, The method, applied to a controller in a lighting device control circuit according to any one of claims 1-5, comprises: The first light intensity fed back by the first light-collecting device in the lighting device control circuit is obtained; the first light-collecting device is oriented towards the sky and is used to collect ambient light intensity. If the brightness of the first light source is less than the first light source brightness threshold, the third switch in the lighting device control circuit is closed. If the brightness of the light source fed back by the second light source in the lighting device control circuit is greater than the second light source brightness threshold, the first switch in the lighting control circuit is closed, and ambient sound is acquired. The second light source is oriented towards the driving pattern of vehicles on the road to detect vehicle lights. If the ambient sound meets the second preset condition, after a preset time delay, when the light brightness fed back by the second light acquisition device is still greater than the second light brightness threshold, the ambient sound fed back by the sound acquisition device is acquired again. If the ambient sound fed back by the sound acquisition device again meets the preset sound threshold, the second switch in the lighting device control circuit is controlled to close, so that the driving circuit of the lighting device is powered on and the light source is driven to work.

7. A lighting device, characterized in that, include: The light source, the driving circuit, and the lighting device control circuit according to any one of claims 1-5, wherein, The light source is electrically connected to the driving circuit and is used for illumination under the drive of the driving circuit; The driving end of the driving circuit is connected to the control end of the second switch in the lighting device control circuit.

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