CN217656685U - Vehicle-mounted in-cabin monitoring camera - Google Patents

Abstract

The utility model relates to a vehicle-mounted in-cabin surveillance camera head, its technical scheme main points are: the method comprises the following steps: the device comprises an image sensor, a light supplement lamp module, an image processing module, a PWM (pulse-width modulation) control module, a POC (power over coax) power supply module and a DC/DC (direct current/direct current) converter, wherein the image processing module is used for receiving a signal fed back by the image sensor and outputting a light supplement control signal according to the fed-back signal; the image sensor is electrically connected with the image processing module; the image processing module is electrically connected with the PWM control module; the PWM control module is electrically connected with the light supplementing lamp module; the POC power supply module is electrically connected with the image processing module and the DC/DC converter respectively; the DC/DC converter is electrically connected with the light supplementing lamp module; the method and the device have the effect of automatically switching the output color image or black and white image according to the ambient brightness.

Description

Vehicle-mounted in-cabin monitoring camera

Technical Field

The utility model relates to a first technical field of surveillance camera, more specifically say, it relates to a vehicle-mounted in-cabin surveillance camera head.

Background

The vehicle-mounted intra-cabin monitoring camera is usually arranged in a vehicle cabin and is used for acquiring video images in the vehicle cabin so as to monitor the inside of the vehicle cabin.

At night or under the condition that ambient brightness is low, light is supplemented through infrared light, a clear video image can be obtained by a black-and-white image output by a monitoring camera in a vehicle-mounted cabin, a better video image can be obtained by a color image output by the monitoring camera in the vehicle-mounted cabin under the condition of daytime or high ambient brightness, but the current monitoring camera in the vehicle-mounted cabin is difficult to automatically switch and output the color image or the black-and-white image.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide an on-vehicle in-cabin surveillance camera head has the function advantage of realizing the automatic switch-over of output color image or black and white image according to ambient brightness.

The above technical purpose of the present invention can be achieved by the following technical solutions:

an on-vehicle in-cabin surveillance camera head, includes: the device comprises an image sensor, a light supplement lamp module, an image processing module, a PWM (pulse-width modulation) control module, a POC (point-to-point) power supply module and a DC/DC (direct current/direct current) converter, wherein the image processing module is used for receiving a signal fed back by the image sensor and outputting a light supplement control signal according to the fed-back signal, the PWM control module is used for receiving the light supplement control signal and controlling the light supplement lamp module according to the light supplement control signal, the POC power supply module is used for supplying power to the light supplement lamp and the image processing module, and the DC/DC converter is used for reducing the voltage output by the POC power supply module to the light supplement lamp;

the image sensor is electrically connected with the image processing module; the image processing module is electrically connected with the PWM control module; the PWM control module is electrically connected with the light supplementing lamp module; the POC power supply module is electrically connected with the image processing module and the DC/DC converter respectively; and the DC/DC converter is electrically connected with the light supplementing lamp module.

Optionally, the image processing module is further configured to output a video signal according to a signal fed back by the image sensor; and the image processing module transmits the video signal to a POC power supply module through an LVDS signal.

Optionally, the light supplement lamp module includes: the LED driving circuit comprises an LED driving circuit and a plurality of infrared light emitting diodes; the PWM control module and the DC/DC converter are electrically connected with the LED drive circuit; a plurality of infrared light-emitting diodes are connected in series to form a lamp string circuit; the input end of the lamp string circuit is electrically connected with the LED driving circuit, and the output end of the lamp string circuit is grounded.

Optionally, the method further includes: the lamp comprises a protective shell, a first connecting plate, a second connecting plate and a lamp panel; the lamp panel, the first connecting plate and the second connecting plate are sequentially arranged in the protective shell; the light supplement lamp module is arranged on the lamp panel; the POC power supply module and the DC/DC converter are both arranged on the first connecting plate; the second connecting plate is provided with a lens shell which sequentially penetrates through the first connecting plate, the lamp panel and the protective shell; the image sensor is arranged in the lens shell; the image processing module and the PWM control module are both arranged on the second connecting plate.

Optionally, the protective casing includes: a front cover and a rear cover; a panel is arranged on the front cover; the front cover and the rear cover are detachably connected to form an accommodating cavity; the first connecting plate, the second connecting plate and the lamp panel are all arranged in the accommodating cavity; the lamp panel is arranged close to the front cover; the rear cover is provided with a first through hole for the POC power supply module to extend out.

Optionally, the rear cover is provided with an installation frame fixedly connected with the inner wall of the vehicle cabin; and the mounting frame is provided with a second through hole for the POC power supply module to extend out.

Optionally, the mounting bracket includes: the fixing plate, the first connecting block and the second connecting block; the first connecting block is obliquely arranged at one end of the fixing plate; the second connecting block is obliquely arranged at the other end of the fixing plate; the fixed plate is fixedly connected with the rear cover; the second through hole is formed in the fixing plate.

To sum up, the utility model discloses following beneficial effect has: can select output color image or black and white image according to ambient brightness, realize color and black and white image automatic switch-over, still through the setting of PWM control module and light filling lamp module, can carry out the light filling automatically according to ambient brightness, and the light filling lamp module also adopts POC power module to supply power, has further reduced outside power supply pencil, practices thrift the cost.

Drawings

FIG. 1 is a schematic diagram of the circuit connection of the present invention;

fig. 2 is a schematic circuit connection diagram of the lamp string circuit according to the present invention;

fig. 3 is a schematic view of the overall structure of the present invention;

fig. 4 is an exploded view of the present invention;

fig. 5 is a schematic view of another aspect of the present invention.

In the figure: 1. an image sensor; 2. a light supplement lamp module; 21. an LED drive circuit; 22. a lamp string circuit; 3. an image processing module; 4. a PWM control module; 5. a POC power supply module; 6. A DC/DC converter; 7. a protective shell; 71. a panel; 72. a front cover; 73. a rear cover; 8. a first connecting plate; 9. a second connecting plate; 91. a lens housing; 10. a lamp panel; 11. a mounting frame; 111. a fixing plate; 112. a first connection block; 113. and a second connecting block.

Detailed Description

In order to make the objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The present invention will be described in detail with reference to the accompanying drawings and examples.

The utility model provides a vehicle-mounted in-cabin surveillance camera head, as shown in figure 1, include: the system comprises an image sensor 1, a light supplement lamp module 2, an image processing module 3 for receiving a signal fed back by the image sensor 1 and outputting a light supplement control signal and a color/black and white image according to the fed back signal, a PWM control module 4 for receiving the light supplement control signal and controlling the light supplement lamp module 2 according to the light supplement control signal, a POC power supply module 5 for supplying power to the light supplement lamp and the image processing module 3, and a DC/DC converter 6 for reducing the voltage output by the POC power supply module 5 to the light supplement lamp, wherein the DC/DC converter 6 is used for converting direct current into direct current and plays a role in reducing voltage in the application;

the image sensor 1 is electrically connected with the image processing module 3; the image processing module 3 is electrically connected with the PWM control module 4; the PWM control module 4 is electrically connected with the light supplementing lamp module 2; the POC power supply module 5 is respectively and electrically connected with the image processing module 3 and the DC/DC converter 6; the DC/DC converter 6 is electrically connected with the light supplement lamp module 2.

In practical application, the image sensor 1 is configured to detect ambient brightness and detect image information of a shot picture, the image processing module 3 processes the image information of the shot picture to obtain a video signal, and outputs a color image by default, the image processing module 3 outputs a black-and-white image when the ambient brightness (i.e., a signal fed back by the image sensor 1) detected by the image sensor 1 is lower than a preset threshold, if the ambient brightness is lower than the preset threshold in the daytime, the image processing module 3 outputs a video signal of the color image, and outputs a video signal of the black-and-white image at night or in a dark place, the image processing module 3 outputs different fill light control signals when the ambient brightness is lower than the preset threshold and when the ambient brightness is not lower than the preset threshold, the PWM control module 4 receives a corresponding fill light control signal and outputs a PWM signal according to the fill light control signal to drive the fill light module 2 to fill light, wherein a function of the image processing module 3 can be implemented by a single chip microcomputer.

Further, the image processing module 3 is further configured to output a video signal according to a signal fed back by the image sensor 1; the image processing module 3 transmits the video signal to the POC power supply module 5 through an LVDS signal.

POC Power module 5 accessible in this application adopts POC's mode Power supply, and wherein, POC (Power Over Coaxia) is based on coaxial video, coaxial control, the superimposed technique of Power. In the coaxial cable transmission, video signals, coaxial signals and power supply are transmitted, i.e. the signals of video, coaxial and the like are combined with the power supply and transmitted on the same axis. Therefore, the video signal can be transmitted to the POC power supply module 5 through the LVDS signal, the POC power supply module 5 can transmit the video signal to the processor for processing the video signal, wherein the processor can adopt chips such as a single chip microcomputer and the like, the power is supplied through the coaxial POC, the coaxial cable can transmit the video signal and the power supply, the external power supply wire harness is reduced, and the cost is saved.

Further, as shown in fig. 2, the fill light module 2 includes: an LED drive circuit 21 and a plurality of infrared light emitting diodes; the PWM control module and the DC/DC converter are both electrically connected with the LED drive circuit 21; a plurality of infrared light-emitting diodes are connected in series to form a lamp string circuit 22; the input end of the lamp string circuit 22 is electrically connected to the LED driving circuit 21, and the output end is grounded, that is, the anode of the first infrared diode L1 is electrically connected to the LED driving circuit 21, the cathode of the first infrared diode L1 is electrically connected to the anode of the second infrared diode, the cathode of the second infrared diode L is electrically connected to the third infrared diode, and so on until the cathode of the last infrared diode LN is grounded.

Specifically, in the present application, the LED driving circuit 21 employs a Boost-type LED driving chip to adjust the brightness of the infrared light emitting diode in the lamp string circuit 22, and the Boost-type LED driving chip mainly plays a role of boosting, and can adjust the duty ratio according to the PWM signal to change the current of the lamp string circuit 22, so as to adjust the brightness of the infrared light emitting diode in the lamp string circuit 22. Through the setting of infrared emitting diode for this application can send infrared light when ambient brightness is lower, with the clear black and white image of output under ambient brightness's lower condition.

Further, as shown in fig. 3 and 4, the method further includes: the lamp comprises a protective shell 7, a first connecting plate 8, a second connecting plate 9 and a lamp panel 10; the lamp panel 10, the first connecting plate 8 and the second connecting plate 9 are sequentially arranged in the protective shell 7; the LED driving circuit 21 and all the infrared light emitting diodes are arranged on the lamp panel 10; the POC power supply module 5 and the DC/DC converter 6 are both arranged on the first connecting plate 8; the second connecting plate 9 is provided with a lens shell 91 which sequentially penetrates through the first connecting plate 8, the lamp panel 10 and the protective shell 7, and the lens shell 91 is made of transparent materials, such as glass; the image sensor 1 is arranged in a lens housing 91; the image processing module 3 and the PWM control module 4 are both disposed on the second connection board 9.

In practical application, this application mainly used gathers the video image in the car cabin, through setting up protective housing 7 in the car cabin, run through first connecting plate 8, lamp plate 10 and protective housing 7 in proper order through lens shell 91 for the picture in the car cabin can be gathered to image sensor 1 that sets up in lens shell 91, through the setting of protective housing 7, strengthened the protection to image sensor 1, image processing module 3, PWM control module 4, POC power module 5, DC/DC converter 6, LED drive circuit 21 and infrared emitting diode.

Further, as shown in fig. 3 and 4, the protective case 7 includes: a front cover 72 and a rear cover 73; the front cover 72 is provided with a panel 71; the front cover 72 and the rear cover 73 are detachably connected to form an accommodating cavity; the first connecting plate 8, the second connecting plate 9 and the lamp panel 10 are all arranged in the accommodating cavity; the lamp panel 10 is arranged close to the front cover 72; the lens housing 91 penetrates through the lamp panel 10 and then sequentially penetrates through the front cover 72 and the panel 71; the rear cover 73 is provided with a first through hole for extending the POC power supply module 5.

Specifically, be close to protecgulum 72 through lamp plate 10 and set up, the infrared diode on the lamp plate 10 of being convenient for carries out infrared light filling to image sensor 1 in the camera lens shell 91, and is close to protecgulum 72, is convenient for go up the lamp plate 10 the long-lived heat transfer of infrared diode for protecgulum 72, and the heat dissipation of the lamp plate 10 of being convenient for, through the setting of first through-hole, the POC power module 5 of being convenient for stretches out the back and is connected with the treater electricity.

Further, as shown in fig. 4 and 5, the rear cover 73 is provided with a mounting bracket 11 for fixedly connecting with the inner wall of the vehicle cabin; and a second through hole for the POC power supply module 5 to extend out is formed in the mounting frame 11. Through the setting of mounting bracket 11, be convenient for set up protective housing 7 in the cabin, through the setting of second through-hole for can pass mounting bracket 11 behind the POC power module 5 who passes back cover 73, the POC power module 5 of being convenient for is connected with the treater electricity.

Further, as shown in fig. 5, the mounting bracket 11 includes: a fixing plate 111, a first connection block 112, and a second connection block 113; the first connecting block 112 is obliquely arranged at one end of the fixing plate 111; the second connecting block 113 is obliquely arranged at the other end of the fixing plate 111; the fixing plate 111 is fixedly connected with the rear cover 73; the second through hole is formed in the fixing plate 111.

Specifically, the fixing plate 111 is connected to the rear cover 73 via a first bolt, and the first connecting block 112 and the second connecting block 113 are provided with mounting holes, so that the fixing plate is connected to the inner wall of the cabin via the second bolt, and the mounting frame 11 is inclined to the inner wall of the cabin via the first connecting block 112 and the second connecting block 113, so that the mounting frame 11 can be more adapted to the inside of the cabin.

The utility model discloses an on-vehicle in-cabin surveillance camera head can select output color image or black and white image according to ambient brightness, has realized color and black and white image automatic switch-over, still through PWM control module 4 and light filling lamp module 2's setting, can carry out the light filling according to ambient brightness is automatic, and light filling lamp module 2 also adopts POC power module 5 to supply power, has further reduced outside power supply pencil, practices thrift the cost.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (7)

1. The utility model provides a vehicle-mounted in-cabin surveillance camera head which characterized in that includes: the system comprises an image sensor, a light supplement lamp module, an image processing module, a PWM control module, a POC power supply module and a DC/DC converter, wherein the image processing module is used for receiving a signal fed back by the image sensor and outputting a light supplement control signal according to the fed-back signal;

the image sensor is electrically connected with the image processing module; the image processing module is electrically connected with the PWM control module; the PWM control module is electrically connected with the light supplementing lamp module; the POC power supply module is electrically connected with the image processing module and the DC/DC converter respectively; and the DC/DC converter is electrically connected with the light supplement lamp module.

2. The vehicle-mounted in-cabin monitoring camera according to claim 1, wherein the image processing module is further configured to output a video signal according to a signal fed back by the image sensor; and the image processing module transmits the video signal to a POC power supply module through an LVDS signal.

3. The on-vehicle in-cabin surveillance camera head of claim 1, characterized in that, the light filling lamp module includes: the LED driving circuit comprises an LED driving circuit and a plurality of infrared light emitting diodes; the PWM control module and the DC/DC converter are electrically connected with the LED drive circuit; a plurality of infrared light-emitting diodes are connected in series to form a lamp string circuit; the input end of the lamp string circuit is electrically connected with the LED driving circuit, and the output end of the lamp string circuit is grounded.

4. The on-board intra-cabin surveillance camera of claim 1, further comprising: the lamp panel comprises a protective shell, a first connecting plate, a second connecting plate and a lamp panel; the lamp panel, the first connecting plate and the second connecting plate are sequentially arranged in the protective shell; the light supplement lamp module is arranged on the lamp panel; the POC power supply module and the DC/DC converter are both arranged on the first connecting plate; the second connecting plate is provided with a lens shell which sequentially penetrates through the first connecting plate, the lamp panel and the protective shell; the image sensor is arranged in the lens shell; the image processing module and the PWM control module are both arranged on the second connecting plate.

5. The vehicle-mounted intra-cabin monitoring camera of claim 4, wherein the protective housing comprises: a front cover and a rear cover; a panel is arranged on the front cover; the front cover and the rear cover are detachably connected to form an accommodating cavity; the first connecting plate, the second connecting plate and the lamp panel are all arranged in the accommodating cavity; the lamp panel is arranged close to the front cover; the rear cover is provided with a first through hole for the POC power supply module to extend out.

6. The vehicle-mounted in-cabin monitoring camera according to claim 5, wherein a mounting rack for fixedly connecting with an inner wall of a vehicle cabin is arranged on the rear cover; and the mounting frame is provided with a second through hole for the POC power supply module to extend out.

7. The vehicle-mounted intra-cabin monitoring camera of claim 6, wherein the mounting bracket comprises: the fixing plate, the first connecting block and the second connecting block; the first connecting block is obliquely arranged at one end of the fixing plate; the second connecting block is obliquely arranged at the other end of the fixing plate; the fixing plate is fixedly connected with the rear cover; the second through hole is formed in the fixing plate.

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