CN111935368B

CN111935368B - Camera with built-in infrared lamp and white light lamp

Info

Publication number: CN111935368B
Application number: CN201910395841.XA
Authority: CN
Inventors: 董挺挺; 洪德斌; 谷利飞
Original assignee: Hangzhou Hikvision Digital Technology Co Ltd
Current assignee: Hangzhou Hikvision Digital Technology Co Ltd
Priority date: 2019-05-13
Filing date: 2019-05-13
Publication date: 2022-05-03
Anticipated expiration: 2039-05-13
Also published as: CN111935368A

Abstract

The camera with the built-in infrared lamp and white light lamp provided by the embodiment of the invention comprises: the infrared lamp and the white light lamp are respectively connected with the processor chip; the processor chip is used for detecting the brightness parameter of the current environment according to the image of the current monitoring scene, and controlling the infrared lamp to be started when the brightness parameter of the current environment does not meet the preset condition; and after the infrared lamp is controlled to be started, the white light lamp is controlled to be started when the current monitoring scene needs to be subjected to target recognition according to the image of the current monitoring scene. The camera of this embodiment, processor chip can carry out the light filling control to infrared lamp and white light lamp according to current monitoring scene, realizes that infrared lamp and white light lamp mix the light filling, for infrared light filling alone or white light filling alone, has improved the light filling effect. In addition, because the light supplement control is carried out on the infrared lamp and the white light lamp by using one processor chip, the hardware cost is saved.

Description

Camera with built-in infrared lamp and white light lamp

Technical Field

The embodiment of the invention relates to the technical field of video monitoring, in particular to a camera with built-in infrared lamps and white light lamps.

Background

At present, in a video monitoring scene, a light supplement lamp is generally needed to supplement light for a low-illumination environment so as to enhance the picture monitoring effect.

In the prior art, a network CAMERA (IP CAMERA, IPC) is usually a white light type or an infrared type. A white light lamp is arranged in the network camera of the white light machine type, and when shooting is needed in a low-illumination environment, light supplement is carried out through the white light lamp. The infrared lamp is arranged in the infrared type network camera, and when shooting is needed in a low-illumination environment, light supplement is carried out through the infrared lamp.

However, the above-mentioned network camera adopts an infrared lamp or a white light lamp alone for light supplement, so that the light supplement effect is not good.

Disclosure of Invention

The embodiment of the invention provides a camera with an infrared lamp and a white light lamp arranged inside, so as to improve the light supplementing effect.

The embodiment of the invention provides a camera with an internal infrared lamp and a built-in white light lamp, which comprises: the LED lamp comprises a processor chip, an infrared lamp and a white light lamp, wherein the processor chip is respectively connected with the infrared lamp and the white light lamp;

the processor chip is used for detecting the brightness parameter of the current environment according to the image of the current monitoring scene, and controlling the infrared lamp to be turned on when the brightness parameter of the current environment does not meet a preset condition, wherein the preset condition is a brightness condition required to be met by an image recognition algorithm;

and the processor chip is also used for controlling the white light lamp to be started when the current monitoring scene needs to be subjected to target identification according to the image of the current monitoring scene after the infrared lamp is controlled to be started.

Optionally, the processor chip is further configured to perform target identification processing on the image of the current monitoring scene after controlling the white light to be turned on, and determine whether the target is identified within a preset duration according to an image identification result, control the white light to be turned off if the target is not identified within the preset duration, and control the infrared light to be turned off if the target is identified within the preset duration.

Optionally, the camera further includes an infrared driving circuit and a white light driving circuit, the first PWM interface of the processor chip is connected to the infrared driving circuit, the infrared driving circuit is connected to the infrared lamp, the second PWM interface of the processor chip is connected to the white light driving circuit, and the white light driving circuit is connected to the white light lamp;

the infrared driving circuit is used for converting a first PWM signal which is output by the processor chip through the first PWM interface and is used for controlling the infrared lamp into driving current of the infrared lamp; the white light driving circuit is used for converting a second PWM signal which is output by the processor chip through the second PWM interface and is used for controlling the white light lamp into driving current of the white light lamp.

Optionally, the infrared lamp includes a far-infrared lamp and a near-infrared lamp, the white light lamp includes a far-white light lamp and a near-white light lamp, the number of the infrared driving circuits is two, and the number of the white light driving circuits is two;

the first PWM interface of the processor chip is respectively connected with the two infrared driving circuits, one of the infrared driving circuits is connected with the far infrared lamp, and the other infrared driving circuit is connected with the near infrared lamp;

the second PWM interface of the processor chip is respectively connected with the two white light driving circuits, wherein one white light driving circuit is connected with the white far light, and the other white light driving circuit is connected with the white near light.

Optionally, the infrared driving circuit or the white light driving circuit includes: the circuit comprises a driving chip, an input circuit, an output circuit and a feedback circuit;

the input circuit is connected with a control input port of the driving chip, the input end of the output circuit is connected with an output port of the driving chip, and the feedback circuit is respectively connected with the output end of the output circuit and a feedback port of the driving chip;

the input circuit is used for detecting the first PWM signal or the second PWM signal output by the processor chip, the driving chip is used for converting the first PWM signal or the second PWM signal into a driving current, the output circuit is used for outputting the driving current, and the feedback circuit is used for adjusting the magnitude of the driving current.

Optionally, the feedback circuit includes a sampling resistor, a filter capacitor, and at least one adjusting resistor;

a feedback port of the driving chip is respectively connected with a first end of the sampling resistor and a first end of the filter capacitor, an output end of the output circuit is respectively connected with a first end of the at least one adjusting resistor after being connected in series and a second end of the sampling resistor, and the second end of the at least one adjusting resistor after being connected in series and the second end of the filter capacitor are both grounded; the at least one adjusting resistor is used for adjusting the magnitude of the driving current.

Optionally, the input circuit includes a first selection resistor and a second selection resistor, a first end of the first selection resistor is connected to the first PWM interface, a first end of the second selection resistor is connected to the second PWM interface, and a second end of the first selection resistor and a second end of the second selection resistor are both connected to the control input port of the driver chip.

Optionally, the output circuit includes a power inductor and at least one filter capacitor, a first end of the power inductor is connected to the output port of the driver chip, and a second end of the power inductor is connected to the at least one filter capacitor, respectively.

Optionally, the infrared driving circuit or the white light driving circuit further includes: the power supply circuit is connected with a power supply input port of the driving chip, and the current stabilizing circuit is respectively connected with a starting port and an output port of the driving chip;

the power supply circuit includes: the power supply is connected with the at least one filter capacitor, and the at least one filter capacitor is also connected with a power input port of the driving chip;

the current stabilizing circuit includes: the first end of the first capacitor is connected with the starting port of the driving chip, the second end of the first capacitor is connected with the output port of the driving chip, and the second end of the first capacitor is sequentially connected with the resistor and the second capacitor.

Optionally, the camera further includes a lamp panel, two high beam lamp cups and two low beam lamp cups are arranged on the lamp panel, the high beam lamp cups and the low beam lamp cups are arranged up and down along a vertical direction, and the high beam lamp cups are located above the low beam lamp cups;

each far-light lamp cup is internally provided with one far-infrared lamp and one far-white light lamp, the far-infrared lamps and the far-white light lamps are vertically arranged, and the far-infrared lamps are positioned above the far-white light lamps;

each dipped headlight cup is internally provided with one infrared dipped headlight and one white light dipped headlight, the infrared dipped headlights and the white light dipped headlights are vertically arranged, and the infrared dipped headlights are positioned above the white light dipped headlights.

The camera with the built-in infrared lamp and the built-in white light lamp provided by the embodiment comprises: the LED lamp comprises a processor chip, an infrared lamp and a white light lamp, wherein the processor chip is respectively connected with the infrared lamp and the white light lamp; the processor chip is used for detecting the brightness parameter of the current environment according to the image of the current monitoring scene, and controlling the infrared lamp to be started when the brightness parameter of the current environment does not meet the preset condition; and after the infrared lamp is controlled to be started, controlling the white light lamp to be started when the current monitoring scene needs to be subjected to target recognition according to the image of the current monitoring scene. The camera of this embodiment has built-in infrared lamp and white light lamp, and the treater chip can carry out the light filling control to infrared lamp and white light lamp according to current monitoring scene, realizes that infrared lamp and white light lamp mix the light filling, for infrared light filling alone or white light filling alone, has improved the light filling effect. In addition, because the light supplement control is carried out on the infrared lamp and the white light lamp by using one processor chip, the hardware cost is saved.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a camera according to an embodiment of the present invention;

fig. 2 is a schematic flow chart of hybrid supplementary lighting control performed by the camera according to the embodiment of the present invention;

fig. 3 is a schematic structural diagram of a camera according to another embodiment of the present invention;

fig. 4 is a schematic structural diagram of a driving circuit according to an embodiment of the invention;

fig. 5 is a schematic structural diagram of a driving circuit according to another embodiment of the invention;

fig. 6 is a schematic layout diagram of an infrared lamp and a white light lamp according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a light supplement circuit of a light supplement lamp in a camera according to an embodiment of the present invention;

FIG. 8 is a schematic diagram of a single row 8-core interface provided by an embodiment of the present invention;

fig. 9 is a schematic diagram of a hardware architecture of a camera according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "first," "second," "third," "fourth," and the like in the description and in the claims, as well as in the drawings, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Currently, a network CAMERA (IP CAMERA, IPC) is generally a white light type or an infrared type. A white light lamp is arranged in the network camera of the white light machine type, and when shooting is needed in a low-illumination environment, light supplement is carried out through the white light lamp. The infrared lamp is arranged in the infrared type network camera, and when shooting is needed in a low-illumination environment, light supplement is carried out through the infrared lamp.

The applicant found in the course of research that: when the infrared lamp is used alone for light supplement, red explosion is easy to generate, and the sight lines of pedestrians and vehicles are affected; when the white light lamp is used alone for light compensation, the phenomenon of dazzling of light can occur, and the sight lines of pedestrians and vehicles can also be influenced. Therefore, an infrared lamp or a white light lamp is independently adopted for light supplement, so that the light supplement effect is not ideal, and potential safety hazards exist.

In some scenes, in order to ensure the video monitoring effect, an infrared lamp and a white light lamp are required to be used for light supplement. In this scenario, a user needs to purchase the infrared light supplement device and the white light supplement device respectively, and use different controllers to control the infrared light supplement device and the white light supplement device respectively, so that the cost of the user is increased.

In order to solve at least one of the above problems, embodiments of the present invention provide a camera with an infrared lamp and a white light lamp built therein. In the camera provided by the embodiment of the invention, the processor chip is respectively connected with the built-in infrared lamp and the built-in white light lamp, and the processor chip respectively controls the infrared lamp and the white light lamp, so that the infrared lamp and the white light lamp are mixed for light supplement, the light supplement effect is improved, and meanwhile, the user cost can be reduced.

The technical solution of the present invention will be described in detail below with specific examples. The following several specific embodiments may be combined with each other, and details of the same or similar concepts or processes may not be repeated in some embodiments.

Fig. 1 is a schematic structural diagram of a camera according to an embodiment of the present invention. As shown in fig. 1, the camera of the present embodiment includes: a processor chip 10, an infrared lamp 20 and a white light lamp 30.

As shown in fig. 1, the processor chip 10 is connected to the infrared lamp 20 and the white light lamp 30, respectively. The processor chip 10 is configured to detect a brightness parameter of a current environment according to an image of a current monitored scene, and control the infrared lamp 20 to turn on when the brightness parameter of the current environment does not meet a preset condition. The processor chip 10 is further configured to control the white light lamp 30 to turn on when it is determined that the target identification needs to be performed on the current monitored scene according to the image of the current monitored scene after the infrared lamp 20 is controlled to turn on.

The camera of this embodiment incorporates an infrared lamp and a white light lamp. Among them, the infrared lamp refers to a light source emitting infrared rays. The infrared lamp may in particular be an infrared far lamp and/or an infrared near lamp. The infrared lamp may also be embodied as a Light-Emitting Diode (LED) lamp. The white light lamp in the present embodiment refers to a light source that emits visible light. The white-light lamp may in particular be a white-light high beam and/or a white-light low beam. The white light lamp may also be embodied as a white LED lamp. White light lamps may also be referred to as warm light lamps.

In this embodiment, there may be a plurality of infrared lamps 20, and a plurality of white light lamps. The processor chip 10 controls the turning on of all the infrared lamps 20 and the white light lamps 30.

Specifically, the processor chip 10 determines a light supplement scheme suitable for the current environment according to the current monitoring scene. The light supplement scheme specifically comprises: the light supplement is not carried out, the infrared lamp is used independently for light supplement, the white light lamp is used independently for light supplement, and the infrared lamp and the white light lamp are used for mixed light supplement.

In this embodiment, the processor chip 10 may determine a specific light supplement scheme according to an actual situation of a current monitoring scene. Exemplarily, in a first monitoring scene, a single infrared lamp is adopted for light supplement; in a second monitoring scene, a single white light lamp is adopted for light supplement; and under a third monitoring scene, performing mixed light supplement by using an infrared lamp and a white light lamp.

It can be understood that, when a single infrared lamp is used for light compensation or a single white light lamp is used for light compensation, the method is similar to the existing infrared machine type or white light machine type, and details are not described in this embodiment. This embodiment focuses on the scheme of performing hybrid fill-in using an infrared lamp and a white light lamp.

Specifically, the processor chip 10 detects the brightness parameter of the current environment according to the image of the current monitored scene. And when the brightness parameter of the current environment does not meet the preset condition, the processor chip 10 controls the infrared lamp 20 to be started. After the infrared lamp 20 is controlled to be turned on, the processor chip 10 controls the white light lamp 30 to be turned on when it is determined that the target identification needs to be performed on the current monitored scene according to the image of the current monitored scene.

Wherein the preset conditions are as follows: and carrying out the brightness condition required to be met by the image recognition algorithm. It can be understood that the camera monitors a scene in a video, and needs to identify an image of the current monitored scene. If the brightness parameter of the current environment does not meet the brightness condition required by the image recognition algorithm, it indicates that the brightness of the current environment is poor, and the camera may not be able to perform image recognition on the current monitored scene.

In this embodiment, when detecting that the brightness of the current environment is poor, the processor chip controls the infrared lamp to be turned on, so that the infrared lamp supplements light to the current monitoring scene. It can be understood that the infrared lamp provides illumination by utilizing the spectrum of near-infrared wavelength which can not be sensed by human eyes, and the infrared supplementary lighting has the advantages of good concealment, high luminous efficiency and the like. In the embodiment, when the poor brightness of the current environment is detected, the infrared lamp is started preferentially to supplement light, the brightness of the monitored scene is increased, interference to human eyes is reduced as much as possible, and the light supplement effect is improved.

Further, when a camera monitors a scene in a video, and a target is detected to enter the monitored scene, target identification is usually required. If the brightness of the monitored scene is low, the accuracy of the target recognition result may be affected. In this embodiment, after opening the infrared lamp, if according to the image of current monitoring scene, when confirming that need carry out target identification to current monitoring scene, the white light lamp of treater chip still control is opened, and at this moment, infrared lamp and white light lamp mix the light filling to optimize the light filling effect, improve the rate of accuracy of target identification result. It can be understood that when it is determined that the target identification of the current monitoring scene is not required, the white light lamp does not need to be turned on, so that energy consumption is saved.

In this embodiment, the infrared lamp and the white light lamp are controlled by the same processor chip. Therefore, on the basis of the existing infrared light supplementing device and white light supplementing device, the infrared lamp and the white light lamp can be respectively controlled without adding an additional processor chip, and hardware cost is saved.

Fig. 2 is a schematic flow chart of performing hybrid fill-in control by the camera according to the embodiment of the present invention. The hybrid light compensation control process of the present embodiment may be executed by the processor chip in fig. 1. As shown in fig. 2, the control process of the camera for performing the hybrid fill-in light includes:

s201: and detecting the brightness parameter of the current environment according to the image of the current monitoring scene.

The brightness parameter of the current environment may include one or more parameters. The brightness parameter of the current environment indicates the lighting situation of the current environment.

S202: and judging whether the brightness parameter of the current environment meets a preset condition, if so, executing S203, and if not, executing S204.

S203: and controlling the infrared lamp to be turned off.

S204: and controlling the infrared lamp to be started.

S205: and judging whether the target identification needs to be carried out on the current monitoring scene or not according to the image of the current monitoring scene, if so, executing S206, and if not, returning to execute S201.

Illustratively, the camera detects whether a human face or a license plate enters a monitoring range according to an image of a current monitoring scene, if so, the current monitoring scene is determined to be required to be subjected to target recognition, and if not, the current monitoring scene is not required to be subjected to target recognition.

S206: and controlling the white light lamp to be started.

S207: and carrying out target identification processing on the image of the current monitoring scene to obtain an image identification result.

Specifically, an image processing algorithm is used for identifying the target in the image.

S208: and judging whether the target is recognized within a preset time length according to the image recognition result, if so, executing S203, and if not, executing S209.

S209: and controlling the white light lamp to be turned off.

In this embodiment, after the processor chip controls the white light lamp to be turned on, the processor chip performs target recognition processing on an image of a current monitoring scene, and determines whether a target is recognized within a preset duration according to an image recognition result, if the target is not recognized within the preset duration, the white light lamp is controlled to be turned off, and if the target is recognized within the preset duration, the infrared lamp is controlled to be turned off.

Specifically, under the condition that target identification is required, after the white light lamp is turned on, the camera performs target identification on the acquired image by adopting an image processing algorithm to obtain a target identification result. If the camera does not recognize the target within the preset time length, the target recognition is completed in the current round or the recognition difficulty exceeds the capability range of the camera, so that the white light lamp is controlled to be turned off, and the camera enters a low power consumption mode. And simultaneously starting a new round of control flow. The preset duration can be set according to actual conditions. Illustratively, the preset time period is 5 minutes.

In this embodiment, under the low light level environment, the camera controls the infrared lamp to open earlier, then when confirming that target recognition needs to be carried out, opens the white light lamp again, that is to say, under the condition that target recognition needs to be carried out, mixes the light filling by infrared lamp and white light lamp, optimizes the light filling effect. Under the condition that target identification is not needed, the white light lamp does not need to be started, and therefore energy consumption can be saved to the maximum extent.

Further, when infrared lamp and white light lamp mix the light filling in this embodiment, the treater chip can also control the luminance of infrared lamp and white light lamp respectively for the light filling effect reaches the optimum. In one possible embodiment, the brightness of the white light lamp is set to not more than 10% at maximum in the hybrid fill-in mode. When the infrared lamp and the white light lamp are simultaneously lighted, the red light is covered, soft warm light is seen by naked eyes, and the light supplementing effect in the target identification application is greatly improved.

The camera of the present embodiment includes: the LED lamp comprises a processor chip, an infrared lamp and a white light lamp, wherein the processor chip is respectively connected with the infrared lamp and the white light lamp; the processor chip is used for detecting the brightness parameter of the current environment according to the image of the current monitoring scene, and controlling the infrared lamp to be started when the brightness parameter of the current environment does not meet the preset condition; and after the infrared lamp is controlled to be started, controlling the white light lamp to be started when the current monitoring scene needs to be subjected to target recognition according to the image of the current monitoring scene. The camera of this embodiment has built-in infrared lamp and white light lamp, and the treater chip can carry out the light filling control to infrared lamp and white light lamp according to current monitoring scene, realizes that infrared lamp and white light lamp mix the light filling, for infrared light filling alone or white light filling alone, has improved the light filling effect. In addition, because the light supplement control is carried out on the infrared lamp and the white light lamp by using one processor chip, the hardware cost is saved.

Fig. 3 is a schematic structural diagram of a camera according to another embodiment of the present invention. On the basis of the embodiment shown in fig. 1, as shown in fig. 3, the camera of this embodiment may further include: an infrared drive circuit 40 and a white light drive circuit 50.

The first PWM interface of the processor chip 10 is connected with the infrared driving circuit 40, the infrared driving circuit 40 is connected with the infrared lamp 20, the second PWM interface of the processor chip 10 is connected with the white light driving circuit 50, and the white light driving circuit 50 is connected with the white light lamp 30.

The infrared driving circuit 40 is configured to convert a first PWM signal, which is output by the processor chip 10 through the first PWM interface and is used for controlling the infrared lamp 20, into a driving current of the infrared lamp 20; the white light driving circuit 50 is configured to convert the second PWM signal, which is output by the processor chip 10 through the second PWM interface and is used to control the white light lamp 30, into a driving current of the white light lamp 30.

Illustratively, when the processor chip determines that the infrared lamp needs to be controlled to be turned on or off, the processor chip generates a first PWM signal and outputs the first PWM signal to the infrared driving circuit. And then, the infrared driving circuit converts the first PWM signal into the driving current of the infrared lamp so as to drive the infrared lamp to be turned on or turned off. When the processor chip determines that the white light lamp needs to be controlled to be turned on or turned off, the processor chip generates a second PWM signal and outputs the second PWM signal to the white light driving circuit. And then, the white light driving circuit converts the second PWM signal into the driving current of the white light lamp so as to drive the white light lamp to be switched on or switched off.

In a possible implementation manner, as shown in fig. 3, in the camera of this embodiment, the infrared lamp 20 includes an far-infrared lamp 21 and a near-infrared lamp 22, the white light lamp 30 includes a far-white lamp 31 and a near-white lamp 32, the number of the infrared driving circuits 40 is two, and the number of the white driving circuits 50 is two.

As shown in fig. 3, the first PWM interface of the processor chip 10 is respectively connected to two infrared driving circuits 40, wherein one of the infrared driving circuits 40 is connected to the far infrared lamp 21, and the other infrared driving circuit 40 is connected to the near infrared lamp 22. The second PWM interface of the processor chip 10 is connected to two white light driving circuits 50, respectively, wherein one of the white light driving circuits 50 is connected to the far-reaching white light lamp 31, and the other white light driving circuit 50 is connected to the near-reaching white light lamp 32.

It is understood that the illumination intensity of the far lamp is higher than that of the near lamp, and the illumination range of the far lamp is larger than that of the near lamp. In this embodiment, the infrared lamp includes far-infrared lamp and near-infrared lamp, and the white light lamp includes far-white light lamp and near-white light lamp for the camera of this embodiment can satisfy the light filling requirement of different environment.

In the present embodiment, the specific number of the far-infrared lamp 21, the near-infrared lamp 22, the far-white lamp 31, and the near-white lamp 32 is not particularly limited, and may be one or more.

Fig. 3 illustrates a case where the number of the infrared far-light 21, the infrared near-light 22, the white far-light 31, and the white near-light 32 is 2.

In consideration of the limited driving capability of the driving chip in each driving circuit, in the present embodiment, different infrared driving circuits 40 are used for driving the far infrared lamp 21 and the near infrared lamp 22, respectively, and different white driving circuits 50 are used for driving the far white lamp 31 and the near white lamp 32, respectively. Therefore, four driving circuits in total, i.e., two infrared driving circuits and two white driving circuits, are required in this embodiment. The processor chip controls the four driving circuits through the first PWM interface and the second PWM interface, so that light supplement control of the infrared lamp and the white light lamp is achieved, and circuit complexity is reduced.

In this embodiment, the processor chip realizes the light filling control of far infrared lamp and near infrared lamp through the infrared drive circuit of difference, realizes the light filling control of far white light lamp and near white light lamp through the white light drive circuit of difference for it is more nimble to mix light filling control. For example, in some scenarios, an infrared far-reaching lamp and a white light far-reaching lamp may be used for mixed light supplement; in other scenes, an infrared near lamp and a white near lamp can be adopted for mixed light supplement; in still other scenes, an infrared near lamp and a white far lamp can be adopted for mixed light supplement; in still other scenes, an infrared far-reaching lamp and a white near-reaching lamp can be used for mixed light supplement.

In the above embodiments, the infrared driving circuit and the white light driving circuit may have the same or similar structures. The structure of the driving circuit is described in detail below with reference to specific embodiments. The driving circuit described in this embodiment can be used as both an infrared driving circuit and a white light driving circuit.

Fig. 4 is a schematic structural diagram of a driving circuit according to an embodiment of the present invention. As shown in fig. 4, the driving circuit includes: a driver chip 41, an input circuit 42, an output circuit 43, and a feedback circuit 44.

The input circuit 42 is connected to a control input port of the driver chip 41, the output circuit 43 is connected to an output port of the driver chip 41, and the feedback circuit 44 is connected to an output terminal of the output circuit 43 and a feedback port of the driver chip 41, respectively.

The input circuit 42 is configured to detect the first PWM signal or the second PWM signal output by the processor chip 10, the driving chip 41 is configured to convert the first PWM signal or the second PWM signal into a driving current, the output circuit 43 is configured to output the driving current, and the feedback circuit 44 is configured to adjust the magnitude of the driving current.

It can be understood that when the driving circuit of the present embodiment is used as an infrared driving circuit, the control input terminal of the input circuit 42 is connected to the first PWM interface of the processor chip 10, and the output terminal of the output circuit 43 is connected to the infrared lamp. When the driving circuit of the present embodiment is used as a white light driving circuit, the control input terminal of the input circuit 42 is connected to the second PWM interface of the system on chip, and the output terminal of the output circuit 43 is connected to the white light.

The driving chip 41 in fig. 4 is configured to convert the first PWM signal or the second PWM signal output by the processor chip 10 into a driving current, and perform light supplement control on the infrared lamp or the white light lamp through the driving current. It should be noted that, in practical applications, the driving chip 41 may be a driving chip in the prior art.

A specific driving circuit is described as an example. Fig. 5 is a schematic structural diagram of a driving circuit according to another embodiment of the present invention.

As shown IN fig. 5, the driving chip UW6 includes 6 pin ports, i.e., IN, PWM, GND, BOOT, SW, FB, wherein the IN port is used for connecting a power supply. The PWM port is used for being connected with the input circuit and receiving the PWM signal output by the processor chip through the input circuit. Wherein, FAR _ IR _ PWM is a PWM signal of a white light lamp, NEAR _ IR _ PWM is a PWM signal of an infrared lamp. The GND port is used for grounding, and the SW interface is used for connecting an output circuit and outputting the converted driving current to an infrared lamp or a white light lamp. The FB port is used for connecting a feedback circuit.

In one possible implementation, as shown in fig. 5, the feedback circuit includes a sampling resistor R593, a filter capacitor C616, and at least one adjusting resistor. Two cases of adjusting the resistance are illustrated in fig. 5, R1330 and R1341, respectively.

A feedback port FB of the driving chip is respectively connected with a first end of the sampling resistor R593 and a first end of the filter capacitor C616, a first end of the adjusting resistor R1330 and the adjusting resistor R1341 after being connected in series is respectively connected with an output end of the output circuit and a second end of the sampling resistor R593, and a second end of the adjusting resistor R1330 and the adjusting resistor R1341 after being connected in series and a second end of the filter capacitor C616 are both grounded; the adjusting resistors R1330 and R1341 are used for adjusting the magnitude of the driving current.

In a possible implementation manner, as shown in fig. 5, the input circuit includes a first selection resistor RS2323 and a second selection resistor RS2322, a first end of the first selection resistor RS2323 is connected to the first PWM interface, a first end of the second selection resistor RS2322 is connected to the second PWM interface, and a second end of the first selection resistor RS2323 and a second end of the second selection resistor RS2322 are both connected to the control input port PWM of the driver chip.

In one possible implementation, the output circuit includes a power inductor L2 and at least one filter capacitor. The case of two filter capacitances, C617 and CD13, respectively, is illustrated in fig. 5. A first end of the power inductor L2 is connected to the output port SW of the driver chip, and a second end of the power inductor L2 is connected to the filter capacitors C617 and CD13, respectively.

In one possible implementation, as shown in fig. 5, the infrared driving circuit or the white light driving circuit in this embodiment may further include: the power supply circuit is connected with a power input port IN of the driving chip, and the current stabilizing circuit is respectively connected with a start port BOOT and an output port SW of the driving chip.

The power supply circuit includes: a power supply and at least one filter capacitor. The case of two filter capacitances, C614 and C615, respectively, is illustrated in fig. 5. The power supply is respectively connected with the filter capacitors C614 and C615, and the filter capacitors C614 and C615 are also connected with a power input port IN of the driving chip.

The current stabilizing circuit includes: the driving circuit comprises a first capacitor C613, a second capacitor C621 and a resistor R600, wherein a first end of the first capacitor C613 is connected with a start port BOOT of the driving chip, a second end of the first capacitor C613 is connected with an output port SW of the driving chip, and a second end of the first capacitor C613 is further connected with the resistor R600 and the second capacitor C621 in sequence.

As shown in fig. 5, the output terminals LED1+ and LED 1-of the driving circuit are driving signals, and when the driving circuit is an infrared driving circuit, the output terminals LED1+ and LED 1-are respectively connected to the positive and negative electrodes of the infrared lamp. When the driving circuit is a white light driving circuit, the output end LED1+ and the output end LED 1-are respectively connected to the anode and the cathode of the white light lamp.

In this embodiment, the driving circuit controls the magnitude of the driving current by the PWM duty ratio. In the specific implementation process, the maximum driving current output by the infrared driving circuit and the white light driving circuit can be adjusted according to actual conditions, so that the light supplementing effect is optimized.

In one possible embodiment, the maximum driving current of the infrared driving circuit is 800mA, and the maximum driving current of the white driving circuit is 100 mA. The embodiment can ensure that the white light lamp is not dazzling, the optical effect of the mixed supplementary lighting is the best, and the energy consumption can be saved.

On the basis of the above embodiments, in order to further optimize the hybrid light supplement effect, the present embodiment further provides a layout scheme of the infrared lamps and the white light lamps.

Fig. 6 is a schematic layout diagram of an infrared lamp and a white light lamp according to an embodiment of the present invention. As shown in fig. 6, the camera of the present embodiment further includes: a lamp panel 70, wherein the lamp panel 70 is provided with two high beam lamp cups 71 and two low beam lamp cups 72.

As shown in fig. 6, the high beam cup 71 and the low beam cup 72 are vertically arranged, and the high beam cup 72 is located above the low beam cup 72.

Further, one infrared far light 21 and one white light far light 31 are arranged in each far light cup 71, the infrared far light 21 and the white light far light 31 are vertically arranged in each far light cup 71, and the infrared far light 21 is located above the white light far light 31.

One of the infrared near lamps 22 and one of the white near lamps 32 are disposed within each of the low beam cups 72. In each of the dipped headlight cups 72, the infrared near light 22 and the white near light 32 are vertically arranged one above the other, and the infrared near light 22 is located above the white near light 32.

In this embodiment, the infrared lamp and the white light lamp are vertically arranged in each lamp cup. The 'infrared lamp and the white light lamp are vertically arranged in the vertical direction' means that the infrared lamp and the white light lamp are vertically arranged in the vertical direction in the working process of the light supplement lamp. The infrared lamp is positioned above the white light lamp, so that a light supplementing visual angle is expanded in the horizontal direction, and the light supplementing angle is controlled in the vertical direction, so that the infrared lamp is not blocked by the light shield and cannot be reflected; in addition, the infrared lamp and the white light lamp are tightly attached in the lamp cup, so that the arrangement space of the lamp panel is saved, and seamless switching can be realized in the aspect of monitoring vision; furthermore, in practical use, human eyes observe the camera from bottom to top, so that infrared light can be effectively shielded by soft white light, and user experience is optimized.

Fig. 7 is a schematic diagram of a fill-in circuit of a fill-in light in a camera according to an embodiment of the present invention. As shown in fig. 7, U1, U2, U3, and U4 are LED devices, each of which includes a white light lamp and an infrared lamp. That is, one LED device is disposed in each lamp cup shown in fig. 6.

As shown in fig. 7, each component includes 6 pins. Taking U1 as an example, pin 2, pin 3, pin 4, and pin 5 are driving signal pins, and pin 6 and pin 1 are heat-dissipating pad pins. As shown in fig. 7, the 4 LED components share 8 driving signals, which are LED1+, LED1-, LED2+, LED2-, LED3+, LED3-, LED4+, and LED 4-. The 8-channel driving signals can be connected with the processor chip through a single-row 8-core interface. Illustratively, fig. 8 is a schematic diagram of a single row 8-core interface provided by an embodiment of the present invention. The connection of the processor chip and the lamp panel can be realized through a single-row 8-core interface as shown in fig. 8.

Fig. 9 is a schematic diagram of a hardware architecture of a camera according to an embodiment of the present invention. Referring to fig. 9, the hardware architecture of the camera mainly includes: digital Signal Processing (DSP) mainboard, equipment front end board, lamp plate and SD cardboard.

Optionally, the DSP motherboard is provided with a processor chip, a DC-DC module, an audio circuit, a 485 circuit, an alarm circuit, a video filter, a network communication chip, and the like. The camera of the embodiment adopts DC12V to supply power, converts the power into voltages of 5V, 3.3V, 1.8V, 1.35V, 1.2V, 1.1V and the like required by the platform through the DCDC converter, and completes the power-on of the platform by controlling the power-on time sequence through the enabling of the signal. After the platform system is started, relevant parameters are configured on the bottom layer, and control over a SENSOR board, a lens, a network and the like is completed.

The PWM0 interface of processor chip is connected with two infrared drive circuits, and one of them infrared drive circuit is connected with the infrared far lamp on the lamp plate, and another infrared drive circuit is connected with the infrared near lamp on the lamp plate. The PWM1 interface of the processor chip is connected with two white light drive circuits, one of which is connected with a white light far lamp on the lamp panel, and the other is connected with a white light near lamp on the lamp panel.

The front end plate mainly comprises an image SENSOR SENSOR plate, and when the SENSOR plate is exposed to collect images, an infrared lamp and a white light lamp on the lamp plate are used for mixed light supplement.

It should be noted that in this embodiment, the camera is not limited to the device included in fig. 9, and in practical applications, it may further include other devices, for example, a heating module, etc., which may be determined according to practical situations, and is not limited herein.

In the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; may be mechanically coupled, may be electrically coupled or may be in communication with each other; either directly or indirectly through intervening media, such as through internal communication or through an interaction between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the embodiments of the present invention, it should be understood that the terms "inner side wall", "bottom end", "outer side wall", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description of the embodiments of the present invention, it should be understood that the terms "center", "length", "width", "thickness", "top end", "bottom end", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "inner", "outer", "axial", "circumferential", etc., are used to indicate an orientation or positional relationship based on that shown in the drawings, merely to facilitate the description of the present invention and to simplify the description, and are not intended to indicate or imply that the position or element referred to must have a particular orientation, be of particular construction and operation, and therefore, are not to be construed as limiting the present invention.

Those of ordinary skill in the art will understand that: all or a portion of the steps of implementing the above-described method embodiments may be performed by hardware associated with program instructions. The program may be stored in a computer-readable storage medium. When executed, the program performs steps comprising the method embodiments described above; and the aforementioned storage medium includes: various media that can store program codes, such as ROM, RAM, magnetic or optical disks.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A camera with built-in infrared lamp and white light lamp is characterized by comprising: the LED lamp comprises a processor chip, an infrared lamp and a white light lamp, wherein the processor chip is respectively connected with the infrared lamp and the white light lamp;

after controlling the infrared lamp to turn on, the processor chip is further configured to:

according to the image of the current monitoring scene, when the target identification of the current monitoring scene is determined to be needed, the white light lamp is controlled to be started, so that mixed light supplement is carried out through the infrared lamp and the white light lamp;

and judging whether the target is identified within a preset time length according to the target identification result, and controlling the white light lamp to be turned off if the target is not identified within the preset time length.

2. The camera of claim 1, wherein the infrared light is controlled to turn off if a target is identified within a preset time period.

3. The camera according to claim 1 or 2, further comprising an infrared driving circuit and a white light driving circuit, wherein the first PWM interface of the processor chip is connected to the infrared driving circuit, the infrared driving circuit is connected to the infrared lamp, the second PWM interface of the processor chip is connected to the white light driving circuit, and the white light driving circuit is connected to the white light lamp;

the infrared driving circuit is used for converting a first PWM signal which is output by the processor chip through a first PWM interface and is used for controlling the infrared lamp into driving current of the infrared lamp; the white light driving circuit is used for converting a second PWM signal which is output by the processor chip through the second PWM interface and is used for controlling the white light lamp into driving current of the white light lamp.

4. The camera according to claim 3, wherein the infrared lamps include far infrared lamps and near infrared lamps, the white light lamps include far white light lamps and near white light lamps, the number of the infrared driving circuits is two, and the number of the white light driving circuits is two;

5. The camera of claim 4, wherein the infrared drive circuit or the white light drive circuit comprises: the circuit comprises a driving chip, an input circuit, an output circuit and a feedback circuit;

6. The camera of claim 5, wherein the feedback circuit comprises a sampling resistor, a filter capacitor, and at least one adjusting resistor;

7. The camera according to claim 5, wherein the input circuit comprises a first selection resistor and a second selection resistor, a first terminal of the first selection resistor is connected to the first PWM interface, a first terminal of the second selection resistor is connected to the second PWM interface, and a second terminal of the first selection resistor and a second terminal of the second selection resistor are both connected to the control input port of the driver chip.

8. The camera according to claim 5, wherein the output circuit comprises a power inductor and at least one filter capacitor, a first terminal of the power inductor is connected to the output port of the driver chip, and a second terminal of the power inductor is connected to the at least one filter capacitor respectively.

9. The camera of claim 5, wherein the infrared drive circuit or the white light drive circuit further comprises: the power supply circuit is connected with a power supply input port of the driving chip, and the current stabilizing circuit is respectively connected with a starting port and an output port of the driving chip;

10. The camera according to claim 4, further comprising a lamp panel, wherein two high beam light cups and two low beam light cups are disposed on the lamp panel, the high beam light cups and the low beam light cups are vertically arranged, and the high beam light cups are located above the low beam light cups;