CN209823854U - Monitoring camera device - Google Patents
Monitoring camera device Download PDFInfo
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- CN209823854U CN209823854U CN201822088515.8U CN201822088515U CN209823854U CN 209823854 U CN209823854 U CN 209823854U CN 201822088515 U CN201822088515 U CN 201822088515U CN 209823854 U CN209823854 U CN 209823854U
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Abstract
The utility model is suitable for a control technical field provides a monitoring camera device, including camera lens subassembly, sensor module and infrared selection module, the selection subassembly in the infrared selection module drives visible light band pass filter and two band pass filters and removes to make one of them remove to sensor module's the place ahead, two band pass filters allow the fractional waveband of visible light wave band and infrared light wave band to pass through. The utility model discloses a selection subassembly is to the selection of visible light band pass filter and double band pass filter, can only make visible light get into sensor assembly, it disturbs its color reducing power to avoid infrared ray etc. outside the visible light, also can select to make the fractional wave band in visible light and the infrared light wave band get into, sensor assembly can utilize more light, improve the formation of image effect, filter out undesirable some infrared interference light, avoided disturbing light too much to cause the excessive and image of light filling to expose to the sun the problem.
Description
Technical Field
The utility model belongs to the technical field of the control, in particular to monitoring camera device.
Background
At present, with the complex application of security protection environment, a plurality of (different angles of) infrared cameras can be installed in single space, and in the low light level environment, each camera can automatically turn on the required light source along with the low ambient brightness that the photoresistor detected. Because the light bands of supplementary lighting required by different infrared cameras are possibly different, if a camera needs 850nm infrared light, and if a camera needs 940nm infrared light, the camera which originally only wants to obtain 850nm (or 940nm) band infrared light is mixed with 940nm (or 850nm) interference light. The traditional infrared camera is not provided with the treatment of night vision filtering interference light, so that the SENSOR (image SENSOR) of the camera receives the interference light, and when the interference light is strong, the problem of image overexposure is caused by excessive supplementary lighting.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a monitoring camera device aims at solving different cameras and causes the technical problem who receives interference light because of required light filling wave band is different.
The utility model discloses a realize like this, a surveillance camera device, include:
a lens assembly;
the sensor assembly is arranged behind the lens assembly; and
the infrared selection module comprises a visible light band-pass filter, a double band-pass filter and a selection assembly, wherein the selection assembly is used for driving the visible light band-pass filter and the double band-pass filter to move according to the ambient illumination condition so as to enable the visible light band-pass filter or the double band-pass filter to move to the front of the sensor assembly; the dual band pass filter allows visible light bands and partial infrared light bands to pass through.
In one embodiment, the dual band-pass filter allows infrared light in the visible light band and with the wavelength of 800nm to 900nm to pass through.
In one embodiment, the dual band-pass filter allows visible light and infrared light with a wavelength of 900nm to 1000nm to pass through.
In an embodiment, the monitoring camera apparatus further includes an ambient light illuminance detection module, the selection module includes a control element and a moving element, the ambient light illuminance detection module is configured to detect an ambient light illuminance value, and the control element controls the moving element according to the detected ambient light illuminance value.
In one embodiment, the control element controls the moving element according to a first threshold value detected by the ambient light illuminance detection assembly, so that the dual bandpass filter moves to the front of the sensor assembly; the control element controls the moving element according to a second threshold value detected by the ambient light illuminance detection assembly, so that the visible light bandpass filter moves to the front of the sensor assembly; the first threshold is less than a second threshold.
In an embodiment, the monitoring camera device further includes a light supplement lamp assembly, the light supplement lamp assembly is turned on according to the first threshold detected by the ambient light illuminance detection assembly, and the light supplement lamp assembly is turned off according to the second threshold detected by the ambient light illuminance detection assembly.
In one embodiment, the first threshold is 3 to 4LUX, and the second threshold is 4.5 to 5.5 LUX.
In one embodiment, the ambient light illuminance detection assembly includes a set of photodiodes, and the photodiodes are connected to the fill light assembly and the selection assembly simultaneously.
In one embodiment, the ambient light illuminance detection module includes two sets of identical photodiodes, one of the photodiodes is connected to the fill light module, and the other photodiode is connected to the selection module.
In one embodiment, the control element is a microcontroller including an input end and an output end, the input end receives an input signal which is a current signal from the ambient light illumination value detected by the ambient light illumination detection assembly, and the output end is connected to the moving assembly; the moving assembly is a micro-motor.
The utility model provides a monitoring camera device, its beneficial effect lies in:
because the selection component in the infrared selection module can drive the visible light band-pass filter and the double band-pass filter to move, so that any one of the visible light band-pass filter and the double band-pass filter can move to the front of the sensor component, the double band-pass filter allows a visible light band and a part of an infrared light band to pass through, under the environment with sufficient natural light rays, the visible light band-pass filter can be selected to only allow visible light to enter the sensor component, infrared rays and the like except the visible light can be prevented from entering the sensor component to interfere the color reduction capability of the sensor component, under the environment with insufficient natural light rays, the double band-pass filter can be selected to allow visible light and a part of infrared light bands to enter, the sensor component can utilize more light rays, the imaging effect is improved, the infrared band entering the sensor component is narrower, and an undesired part of the infrared interference light rays can be filtered out, the problems of excessive supplementary lighting and overexposure of images caused by excessive interference light are avoided.
Drawings
Fig. 1 is a schematic structural diagram of a monitoring camera device according to an embodiment of the present invention;
fig. 2 and fig. 3 are schematic diagrams illustrating selection of a visible band-pass filter and a dual band-pass filter of a monitoring camera device according to an embodiment of the present invention;
fig. 4 is a spectral characteristic diagram of a visible light bandpass filter of a monitoring camera device according to an embodiment of the present invention;
fig. 5 is a graph of spectral characteristics of a dual bandpass filter of a monitoring camera device according to an embodiment of the present invention;
fig. 6 is a logic diagram for selecting an operating state of the monitoring camera device according to the embodiment of the present invention.
The designations in the figures mean:
the monitoring camera device 100, the housing 1, the lens assembly 2, the sensor assembly 3, the visible light band-pass filter 41, the dual band-pass filter 42, the selection assembly 43, the control element 431, the moving element 432, the fixed frame 433, the ambient light illuminance detection assembly 5 and the light supplement lamp assembly 6.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly or indirectly secured to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "upper", "lower", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description, but do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the patent. The terms "first", "second" and "first" are used merely for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. The meaning of "plurality" is two or more unless specifically limited otherwise.
In order to explain the technical solution of the present invention, the following detailed description is made with reference to the specific drawings and examples.
Referring to fig. 1 to 4, the monitoring camera device 100 of the present invention includes a housing 1 and a lens assembly 2, a sensor assembly 3 and an infrared selection module disposed inside the housing 1, wherein the sensor assembly 3 is disposed at the rear of the lens assembly 2 for receiving the optical signal from the lens assembly 2 and converting the optical signal into an electrical signal, so as to save and transmit the monitoring image. The infrared selection module comprises a visible light band-pass filter 41, a dual band-pass filter 42 and a selection assembly 43, the visible light band-pass filter 41 and the dual band-pass filter 42 are located between the lens assembly 2 and the sensor assembly 3, and the selection assembly 43 drives the visible light band-pass filter 41 and the dual band-pass filter 42 to move according to the ambient light condition, so that the visible light band-pass filter 41 or the dual band-pass filter 42 moves to the front of the sensor assembly 3, and light reaching the sensor assembly 3 is filtered. The visible light band pass filter 41 allows the visible light band to pass through, and the dual band pass filter 42 allows the visible light band and a part of the infrared light band to pass through.
The embodiment of the utility model provides a monitoring camera device 100, through the setting of infrared selection module, it selects subassembly 43 can drive visible light band pass filter 41 and two band pass filters 42 to remove according to the ambient light condition, so that one of them removes to sensor component 3's the place ahead in visible light band pass filter 41 and two band pass filters 42, two band pass filters 42 allow visible light wave band and partial infrared light wave band to pass through, under the environment that natural light is sufficient, can select visible light band pass filter 41 only to make visible light get into sensor component 3, avoid infrared ray etc. outside the visible light to get into sensor component 3 and disturb its color restorability; under the insufficient environment of natural light (ambient light) light, can select two band-pass filter 42 to make visible light and partial infrared light wave band get into, sensor module 3 can utilize more light, improves the formation of image effect, and the infrared wave band that enters into sensor module 3 is narrower, can filter the infrared interference light of undesirable some, has avoided the interference light too much, too strong to cause the light filling excessive and then the problem of image overexposure.
As shown in fig. 1, the monitoring camera device 100 further includes a light supplement lamp assembly 6 for turning on the lens assembly 2 to supplement light in a time period when the illuminance of natural light is insufficient, such as at night. In this embodiment, the fill-in light assembly 6 includes a plurality of light emitting elements, and the light emitting elements emit full-band light, i.e., white light, including a visible light band and an infrared light band, so that the fill-in light can be performed by simultaneously using visible light and part of infrared light in a period of insufficient ambient light.
Referring to fig. 1, the selecting assembly 43 includes a control element 431 and a moving element 432, the control element 431 is used for controlling the moving element 432, and may trigger the control of the moving element 432 according to a certain trigger signal or a certain trigger action, and the moving element 432 is used for driving the visible light band-pass filter 41 and the dual band-pass filter 42 to move.
For example, referring to fig. 2 and 3, the visible band pass filter 41 and the dual band pass filter 42 are disposed on a fixed frame 433 in a side-by-side manner, and the moving element 432 may be a micro-motor connected to the fixed frame 433, and the micro-motor drives the fixed frame 433 to move. The visible band pass filter 41 and the dual band pass filter 42 may be respectively disposed on a fixed frame, and may be moved to the front of the sensor unit 3 in other manners such as a common or individual pendulum movement, an individual telescopic movement, and the like, and are selected as necessary and not particularly limited.
The control element 431 may be a Microcontroller Unit (MCU) or a single chip microcomputer, and includes an input end and an output end, where the input end receives a trigger signal as an input signal and outputs a corresponding output signal to the micro-motor according to the input signal, and the micro-motor drives the fixed frame 433 to move forward or backward, such as left and right in fig. 2 and 3.
Specifically, the control of the moving element 432 by the control element 431 is triggered by the ambient light illuminance value as a trigger signal, so that the monitoring and imaging apparatus 100 of the present embodiment further includes an ambient light illuminance detection unit 5 disposed outside the housing 1 for detecting the ambient light illuminance value, and the control of the moving element 432 by the control element 431 can be triggered according to the detected ambient light illuminance value.
The ambient light level detecting assembly 5 includes a photodiode, which generates a photocurrent when being irradiated by ambient light, and generates different photocurrents at different light intensities, so that the photocurrent of the photodiode can be used as a trigger signal for the control element 431 to trigger the moving element 432. Of course, the photodiode detects the illuminance value of visible light.
Specifically, a first threshold of an ambient light illuminance value is given, where the first threshold indicates that the illuminance of ambient light is insufficient at this time, the fill-in light assembly 6 needs to be turned on, and light entering the sensor assembly 3 needs to be selected after the fill-in light assembly 6 is turned on; and a second threshold value, which indicates that the ambient light illumination is sufficient at this time and the light supplement lamp assembly 6 does not need to be turned on. The second threshold is greater than the first threshold.
When the illuminance value of the ambient light received by the photodiode is equal to the first threshold, a first photocurrent corresponding to the first threshold is generated, the first photocurrent is input to the input end of the single chip microcomputer, and the single chip microcomputer outputs a corresponding control signal to the micro-motor according to the magnitude of the first photocurrent, so that the micro-motor drives the fixed frame 433 to move, and the double bandpass filter 42 is moved to the front of the sensor assembly 3. On the contrary, when the illuminance value of the ambient light received by the photodiode is equal to the second threshold, a second photocurrent corresponding to the second threshold is generated and input to the input end of the single chip microcomputer, the single chip microcomputer outputs a corresponding control signal to the micro-current according to the magnitude of the second photocurrent, and the micro-current drives the fixed frame 433 to move so as to move the visible light bandpass filter 41 to the front of the sensor assembly 3. Between the first threshold and the second threshold, control element 431 is maintained in a state of hysteresis, with no movement of the micromotor and of fixed frame 433.
The fill-in light module 6 is also connected to the ambient light illumination detection module 5, and is turned on according to the first threshold and turned off according to the second threshold.
Optionally, one or two sets of photodiodes may be included in the ambient light illuminance detection assembly 5, and each set may further include one or more photodiodes.
For a set of photodiodes, the photodiodes may be simultaneously connected to the fill-in light assembly 6 and the control element 431, and signals of photocurrent generated by the set of photodiodes are simultaneously input to the control element 431 and the fill-in light assembly 6, so that the control element 431 can control the moving element 432 to trigger and synchronize with the on/off of the fill-in light assembly 6. For two sets of photodiodes, one of the two sets of photodiodes is connected to the fill-in light assembly 6 and is used for controlling the fill-in light assembly 6 to be turned on or off, the other set of photodiode is connected to the control element 431 and is used for triggering the control element 431, the two sets of photodiodes are the same and can generate the same first photocurrent and the same second photocurrent under the same first threshold value and the same second threshold value, and the control triggering of the moving element 432 by the control element 431 and the switching synchronization of the fill-in light assembly 6 can also be realized.
In one embodiment, the first threshold may be 3 to 4LUX, such as 3.5LUX, and the second threshold may be 4.5 to 5.5LUX, such as 5 LUX. The first threshold and the second threshold are relatively low, so that the light supplementing lamp assembly 6 and the infrared selection module are turned on and off in the natural light environment at relatively later time periods in a day, the monitoring camera device 100 can shoot pictures under the natural light for a longer time, the proportion of color reduction pictures is improved, the resolution of the monitoring pictures is facilitated, and the monitoring effect is improved. Of course, the first threshold and the second threshold may be set to other specific values according to the specific use environment of the monitoring camera device 100, and are not limited thereto.
Referring to fig. 4, the visible light filter allows the visible light band of 380nm to 760nm to pass through, and the infrared light above 760nm cannot pass through. Under the condition of visible light, infrared light is stray light for the camera monitoring device, and the infrared light cannot enter the camera monitoring device, so that the definition of monitoring camera shooting can be ensured, the color reducibility of a color reduction picture is improved, and the monitoring picture with low color cast is obtained.
The dual-band pass filter 42 allows a partial band of the infrared band to pass through while passing through a visible light band of 380nm to 760nm, where the partial band may be infrared light with a wavelength of 800nm to 900nm or infrared light with a wavelength of 900nm to 1000nm, so as to meet the light supplement requirements of different monitoring cameras 100.
Referring to fig. 5, taking the infrared light with a wavelength of 800nm to 900nm as an example, the transmittance of the dual band-pass filter 42 for the infrared light with a wavelength of 810nm to 890nm is greater than 90%, and more preferably greater than 95%. Also, it is noted that the above references to "passing" may refer to a light transmittance of greater than 90%, and even greater than 95%.
Referring to fig. 6, the whole monitoring camera device 100 is turned on, the ambient light illuminance detection module 5 detects an illuminance value of ambient light, and the control unit 431 controls the movement of the moving unit 432 according to the illuminance value of the ambient light detected by the ambient light illuminance detection module 5. When the ambient illuminance value is greater than or equal to 5LUX, the fill-in light assembly 6 is kept not turned on, and the moving element 432 drives the visible light band-pass filter 41 to move to the front of the sensor assembly 3; when the ambient illuminance value is less than or equal to 3.5LUX, the fill-in light assembly 6 is turned on, and the moving element 432 drives the dual-bandpass filter 42 to move to the front of the sensor assembly 3.
When the monitoring camera device 100 is turned on all day long, the ambient light illuminance value changes cyclically, when the ambient light illuminance value is less than or equal to 3.5LUX, the light supplement lamp assembly 6 is turned on, and the moving element 432 drives the dual bandpass filter 42 to move to the front of the sensor assembly 3, when the ambient light illuminance value is greater than 3.5LUX and less than 5LUX, the states of the light supplement lamp assembly 6 being turned on and the dual bandpass filter 42 being located in front of the sensor assembly 3 are still kept unchanged, and when the ambient light illuminance value reaches 5LUX, the states of the light supplement lamp assembly 6 being turned off and the visible bandpass filter 41 being located in front of the sensor assembly 3 are switched. And vice versa, will not be described in detail.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A monitoring camera apparatus, comprising:
a lens assembly;
the sensor assembly is arranged behind the lens assembly; and
the infrared selection module comprises a visible light band-pass filter, a double band-pass filter and a selection assembly, wherein the selection assembly is used for driving the visible light band-pass filter and the double band-pass filter to move according to the ambient illumination condition so as to enable the visible light band-pass filter or the double band-pass filter to move to the front of the sensor assembly; the double-band-pass filter allows a visible light wave band and a part of infrared light wave band to pass;
the monitoring camera device further comprises an ambient light illumination detection assembly, the selection assembly comprises a control element and a moving element, the ambient light illumination detection assembly is used for detecting an ambient light illumination value, and the control element controls the moving element according to the detected ambient light illumination value;
the control element is a microcontroller and comprises an input end and an output end, the input signal received by the input end is a current signal which is from the ambient light illumination value detected by the ambient light illumination detection assembly and corresponds to the ambient light illumination value, and the output end is connected to the mobile element; the moving element is a micromotor;
the visible light band-pass filter and the double band-pass filter are arranged on a fixed frame side by side, and the movable element drives the fixed frame to move; or the visible light band-pass filter and the double band-pass filter are respectively arranged on a fixed frame, and the moving element drives the two fixed frames to move so as to carry out common pendulum movement, independent pendulum movement or independent telescopic movement.
2. The monitoring camera device according to claim 1, wherein the dual band pass filter allows infrared light in a visible light band and having a wavelength of 800nm to 900nm to pass therethrough.
3. The monitoring camera device according to claim 1, wherein the dual band pass filter allows infrared light in a visible light band and having a wavelength of 900nm to 1000nm to pass therethrough.
4. The monitoring camera device according to claim 1, wherein the control unit controls the moving unit to move the dual bandpass filter to the front of the sensor unit according to a first threshold value detected by the ambient light illuminance detection unit; the control element controls the moving element according to a second threshold value detected by the ambient light illuminance detection assembly, so that the visible light bandpass filter moves to the front of the sensor assembly; the first threshold is less than a second threshold.
5. The surveillance camera device as claimed in claim 4, further comprising a fill-in light assembly, wherein the fill-in light assembly is turned on according to the first threshold detected by the ambient light illuminance detection assembly, and the fill-in light assembly is turned off according to the second threshold detected by the ambient light illuminance detection assembly.
6. The monitoring camera device according to claim 4 or 5, wherein the first threshold value is 3 to 4LUX, and the second threshold value is 4.5 to 5.5 LUX.
7. The surveillance camera device of claim 5, wherein the ambient light level detection assembly comprises a set of photodiodes, the photodiodes being connected to both the fill-in light assembly and the selection assembly.
8. The surveillance camera device of claim 7, wherein the ambient light level detection assembly comprises two identical sets of photodiodes, one of the sets of photodiodes being connected to the fill-in light assembly and the other set of photodiodes being connected to the selection assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822088515.8U CN209823854U (en) | 2018-12-12 | 2018-12-12 | Monitoring camera device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201822088515.8U CN209823854U (en) | 2018-12-12 | 2018-12-12 | Monitoring camera device |
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| CN209823854U true CN209823854U (en) | 2019-12-20 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111710061A (en) * | 2020-06-28 | 2020-09-25 | 北京嘀嘀无限科技发展有限公司 | Image acquisition system, method, device and storage medium |
| CN113378599A (en) * | 2020-02-25 | 2021-09-10 | 北京小米移动软件有限公司 | Optical fingerprint device, electronic equipment, brightness control method and device |
| CN113691730A (en) * | 2021-09-03 | 2021-11-23 | 浙江宇视科技有限公司 | Task switching control method and device for camera, medium and electronic equipment |
| CN115356843A (en) * | 2022-08-17 | 2022-11-18 | 烟台艾睿光电科技有限公司 | Day and night telescope |
-
2018
- 2018-12-12 CN CN201822088515.8U patent/CN209823854U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113378599A (en) * | 2020-02-25 | 2021-09-10 | 北京小米移动软件有限公司 | Optical fingerprint device, electronic equipment, brightness control method and device |
| CN111710061A (en) * | 2020-06-28 | 2020-09-25 | 北京嘀嘀无限科技发展有限公司 | Image acquisition system, method, device and storage medium |
| CN113691730A (en) * | 2021-09-03 | 2021-11-23 | 浙江宇视科技有限公司 | Task switching control method and device for camera, medium and electronic equipment |
| CN113691730B (en) * | 2021-09-03 | 2023-05-26 | 浙江宇视科技有限公司 | Task switching control method and device of camera, medium and electronic equipment |
| CN115356843A (en) * | 2022-08-17 | 2022-11-18 | 烟台艾睿光电科技有限公司 | Day and night telescope |
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