CN108200349B - POE power supply camera - Google Patents
POE power supply camera Download PDFInfo
- Publication number
- CN108200349B CN108200349B CN201810230027.8A CN201810230027A CN108200349B CN 108200349 B CN108200349 B CN 108200349B CN 201810230027 A CN201810230027 A CN 201810230027A CN 108200349 B CN108200349 B CN 108200349B
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- China
- Prior art keywords
- light source
- power supply
- isolation
- supply circuit
- source device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 230000001502 supplementing effect Effects 0.000 claims abstract description 48
- 238000002955 isolation Methods 0.000 claims abstract description 47
- 238000003384 imaging method Methods 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004880 explosion Methods 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000005286 illumination Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/65—Control of camera operation in relation to power supply
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/10—Current supply arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/50—Reducing energy consumption in communication networks in wire-line communication networks, e.g. low power modes or reduced link rate
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Computer Networks & Wireless Communication (AREA)
- Studio Devices (AREA)
- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The embodiment of the application discloses a POE power supply camera which comprises an isolation device group, a light supplementing light source device, a network interface, an isolation power supply circuit and a non-isolation power supply circuit. The isolation device group comprises a CPU, a photosensitive element, an Ethernet chip and a network transformer, wherein the network transformer is connected with one end of a network interface. The isolation power supply circuit supplies power to the isolation device group, one end of the isolation power supply circuit is connected with the isolation device group, and the other end of the isolation power supply circuit is connected with the network interface. The non-isolated power supply circuit supplies power to the light supplementing light source device, one end of the non-isolated power supply circuit is connected with the light supplementing light source device, and the other end of the non-isolated power supply circuit is connected with the network interface. According to the application, devices such as a CPU (Central processing Unit) are separated by using an isolation power supply circuit, so that the interference of instantaneous heavy current generated by a light supplementing light source device in the explosion process on the circuits such as the CPU is effectively prevented, the running stability of a photosensitive element and the CPU is improved, and the imaging quality of a POE power supply camera is ensured; in addition, the non-isolated power supply circuit is adopted to supply power for the light supplementing light source device, so that the manufacturing cost of the POE power supply camera is reduced.
Description
Technical Field
The invention relates to the technical field of photographic equipment, in particular to a POE power supply camera.
Background
With the rapid development of optical technology and computer network technology, POE (Power Over Ethernet) module is used to supply power to cameras more and more widely.
POE technology is technology that provides dc power to some IP-based terminals (e.g., IP phones, wireless lan access points AP, webcams, etc.) while transmitting data signals to such devices without any modification to the existing ethernet cat.5 wiring infrastructure. The latest standard specifications for simultaneous transmission of data and electric power using existing standard ethernet transmission cables maintain compatibility with existing ethernet systems and users.
When the POE module is utilized to supply power for the camera, the light supplementing light source can generate instantaneous heavy current in the process of flashing light supplementing, so that larger interference is generated to a power supply circuit, the instantaneous drop of the power supply voltage can be caused to cause the resetting of a CPU (Central Processing Unit, a central processing unit), the abnormal sampling of a photosensitive element can be caused due to the unstable power supply, further, the increase of the imaging noise point of a picture is caused, and the imaging effect of the camera is poor.
Disclosure of Invention
The embodiment of the invention aims to provide a POE power supply camera, which improves the stability of a CPU and a photosensitive element, thereby improving the imaging definition and the image resolution of the POE power supply camera.
In order to solve the technical problems, the embodiment of the invention provides the following technical scheme:
The embodiment of the invention provides a POE power supply camera, which comprises:
the device comprises an isolation device group, a light supplementing light source device, a network interface, an isolation power supply circuit and a non-isolation power supply circuit;
The isolation device group comprises a CPU, a photosensitive element, an Ethernet chip and a network transformer, and the network transformer is connected with one end of the network interface;
One end of the isolation power supply circuit is connected with the isolation device group, and the other end of the isolation power supply circuit is connected with the network interface; for powering said set of isolation devices;
One end of the non-isolated power supply circuit is connected with the light supplementing light source device, and the other end of the non-isolated power supply circuit is connected with the network interface; and the light supplementing light source device is used for supplying power to the light supplementing light source device.
Optionally, the method further comprises:
And one end of the light source control switch is connected with the light supplementing light source device, and the other end of the light source control switch is connected with the non-isolated power circuit and is used for conducting closing operation according to instructions sent by the CPU.
Optionally, the light source control switch is a mos tube.
Optionally, the light supplementing light source device is a light source array formed by a plurality of LED light sources.
Optionally, the light supplementing light source device comprises an LED light source array and a capacitor array for providing energy for the LED light source array.
Optionally, the network interface is RJ45 or M12.
Optionally, the lens mount of the POE powered camera is an M12 or CS mount or a C mount.
The embodiment of the invention provides a POE power supply camera, which comprises an isolation device group, a light supplementing light source device, a network interface, an isolation power supply circuit and a non-isolation power supply circuit. The isolation device group comprises a CPU, a photosensitive element, an Ethernet chip and a network transformer, wherein the network transformer is connected with one end of a network interface. The isolation power supply circuit is used for supplying power to the isolation device group, one end of the isolation power supply circuit is connected with the isolation device group, and the other end of the isolation power supply circuit is connected with the network interface. The non-isolated power supply circuit is used for supplying power to the light supplementing light source device, one end of the non-isolated power supply circuit is connected with the light supplementing light source device, and the other end of the non-isolated power supply circuit is connected with the network interface.
According to the technical scheme, the CPU, the photosensitive element, the Ethernet chip and the network transformer of the camera are separated by the isolation power supply circuit, so that the interference of instantaneous heavy current generated by the light supplementing light source device in the explosion process on the circuits such as the CPU and the like is effectively prevented, the running stability of the photosensitive element and the CPU is improved, the imaging quality of the POE power supply camera is ensured, and the imaging definition and the imaging resolution of the POE power supply camera are improved; in addition, the non-isolated power supply circuit is adopted to independently supply power for the circuit in the light supplementing light source device, so that the manufacturing cost and the use cost of the POE power supply camera are greatly reduced.
Drawings
For a clearer description of embodiments of the invention or of the prior art, the drawings that are used in the description of the embodiments or of the prior art will be briefly described, it being apparent that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from them without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a POE powered camera according to an embodiment of the present invention in a specific implementation manner;
Fig. 2 is a block diagram of a POE powered camera according to an embodiment of the present invention in another specific implementation.
Detailed Description
In order to better understand the aspects of the present invention, the present invention will be described in further detail with reference to the accompanying drawings and detailed description. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims and drawings are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements but may include other steps or elements not expressly listed.
Referring to fig. 1, fig. 1 is a block diagram of a POE powered camera according to an embodiment of the present invention.
The POE powered camera may comprise an isolated device group 1, a light supplementing light source device 2, a network interface 3, an isolated power supply circuit 4 and a non-isolated power supply circuit 5.
The isolation device group 1 may include a CPU, a photosensitive element, an ethernet chip, and a network transformer connected to one end of the network interface 3. Of course, the isolation device set 1 may also include other devices in the camera that need to avoid transient high current interference, so as to ensure the stability of the operation of the devices, which is not limited in the present application.
The light supplementing light source device 2 is used for supplementing light when the camera is used for image acquisition, so as to ensure the imaging quality of the image. The types and the number of the light-compensating light sources included in the light-compensating light source device can be selected according to actual application scenes and user requirements, and the application is not limited in any way.
In a specific embodiment, when the infrared light source supplements light, a better image capturing effect can be obtained when the external environment illumination is low, the light supplementing light source device 2 can be a light source array composed of a plurality of infrared light sources and a plurality of visible light sources, wherein the number of the infrared light sources and the number of the visible light sources can be selected according to actual application scenes and user requirements, and the application is not limited in any way. Considering the manufacturing cost of the POE powered camera, the light supplementing light source device may be a light source array composed of a plurality of LED light sources.
Alternatively, the light-compensating light source device 2 may include an LED light source array and a capacitor array for providing energy to the LED light source array, where the number of capacitors included in the capacitor array may be determined according to the number of light sources on the light-compensating light source device 2 and the power of each light source. Of course, other types of energy storage elements are possible, as long as the required amount of lighting is provided for each light source.
Alternatively, the network interface 3 may be an RJ45 or an M12, or may be any other type of network interface, which is not limited in any way by the present application.
Specifically, the POE powered camera may employ an interchangeable lens, and the lens mount may be an M12 or CS mount or a C mount. Of course, other types of lens mounts are possible, and the application is not limited in any way.
The isolation power supply circuit 4 isolates the light supplementing light source device 2 from the isolation device group 1, ensures that the light supplementing light source device 2 and the isolation device group 2 are independently powered, prevents one of the modules from being damaged by high-voltage discharge or other reasons and then being damaged by other modules, and ensures that each module works independently without being interfered, thereby being beneficial to improving the running stability of each device in the isolation device group 1. Specifically, the circuit structure of the isolated power supply circuit 4 can refer to the isolated power supply circuit in the prior art, and the present application is not repeated.
The non-isolated power supply circuit 5 is used for independently supplying power to the light supplementing light source device 2, so that the manufacturing cost of the POE power supply camera can be reduced, and the specific circuit structure of the non-isolated power supply circuit 5 can refer to the isolated power supply circuit in the prior art, and the application is not repeated.
In the technical scheme provided by the embodiment of the invention, the CPU, the photosensitive element, the Ethernet chip and the network transformer of the camera are separated by the isolation power supply circuit, so that the interference of instantaneous heavy current generated by the light supplementing light source device in the explosion process to the circuits such as the CPU and the like is effectively prevented, the running stability of the photosensitive element and the CPU is improved, the imaging quality of the POE power supply camera is ensured, and the imaging definition and the imaging resolution of the POE power supply camera are improved; in addition, the non-isolated power supply circuit is adopted to independently supply power for the circuit in the light supplementing light source device, so that the manufacturing cost and the use cost of the POE power supply camera are greatly reduced.
When the brightness of the shooting environment is large, light supplement can be generally omitted, good shooting effect can be obtained, and when the brightness of the shooting environment is too large, the obtained shooting effect is poor. In view of this, referring to fig. 2, the poe power camera may further include a light source control switch 6, where one end of the light source control switch 6 is connected to the light source device 2, and the other end is connected to the non-isolated power circuit 5.
Alternatively, the light source control switch 6 may be a mos tube, and of course, other types of control switches may be used, which is not limited in any way by the present application.
The light source control switch 6 is of an isolation design, and the light source control switch 6 performs a closing operation according to an instruction sent by the CPU so as to turn on or off the light supplementing light source in the light supplementing light source device 2.
For example, when the brightness of the shooting environment is large, the light compensation may not be performed, and a good shooting effect may be obtained. The CPU determines whether to turn on the light supplementing light source by comparing the relation between the illumination of the current shooting environment of the camera and a preset illumination threshold value. When the illumination intensity of the current shooting environment is smaller than a preset illumination threshold value, the CPU sends an instruction for starting the light supplementing light source device 2 to the light source control switch 6, the light source control switch 6 is closed, the non-isolated power circuit 5 supplies power to the light supplementing light source device 2, and a light source array in the light supplementing light source device 2 is lightened; when the illumination intensity of the current shooting environment is larger than the preset illumination threshold value, when the light source array in the light supplementing light source device 2 is in a lighting state, the CPU sends an instruction for closing the light supplementing light source device 2 to the light source control switch 6, the light source control switch 6 is turned on, the non-isolated power circuit 5 stops supplying power to the light supplementing light source device 2, the light source array is not lighted, and when the light source array is in a non-lighting state, the electric CPU does not perform any operation.
By arranging the light source control switch 6, when the ambient light is insufficient, the CPU controls the switch to be closed, and real-time light supplementing is performed for image acquisition. The imaging effect of the camera is guaranteed, and the power supply energy of the camera can be saved, so that the use cost of a user is reduced.
In this specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, so that the same or similar parts between the embodiments are referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
Those of skill would further appreciate that the elements of the examples described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the elements and steps of the examples have been described generally in terms of functionality in the foregoing description to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present invention.
The POE power supply camera provided by the invention is described in detail above. The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the method of the present invention and its core ideas. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the invention can be made without departing from the principles of the invention and these modifications and adaptations are intended to be within the scope of the invention as defined in the following claims.
Claims (6)
1. A POE powered camera comprising:
The light source control device comprises an isolation device group, a light supplementing light source device, a network interface, an isolation power circuit, a non-isolation power circuit and a light source control switch;
The isolation device group comprises a CPU, a photosensitive element, an Ethernet chip and a network transformer, and the network transformer is connected with one end of the network interface;
One end of the isolation power supply circuit is connected with the isolation device group, and the other end of the isolation power supply circuit is connected with the network interface; for powering said set of isolation devices; the isolation power supply circuit isolates the light supplementing light source device from the isolation device group, so that the light supplementing light source device and the isolation device group are ensured to be independently powered;
One end of the non-isolated power supply circuit is connected with the light supplementing light source device, and the other end of the non-isolated power supply circuit is connected with the network interface; the light supplementing light source device is used for supplying power to the light supplementing light source device;
And one end of the light source control switch is connected with the light supplementing light source device, and the other end of the light source control switch is connected with the non-isolated power circuit and is used for conducting closing operation according to instructions sent by the CPU.
2. The POE powered camera of claim 1, wherein said light source control switch is a mos tube.
3. The POE powered camera as recited in claim 1 wherein said light supplementing light source means is a light source array comprised of a plurality of LED light sources.
4. A POE powered camera as recited in any one of claims 1 to 3 wherein said light supplementing light source means comprises an array of LED light sources and a capacitive array for energizing said array of LED light sources.
5. The POE powered camera of claim 4, wherein said network interface is RJ45 or M12.
6. The POE powered camera as recited in claim 5 wherein the POE powered camera has a lens mount of M12 or CS mount or C mount.
Priority Applications (1)
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CN201810230027.8A CN108200349B (en) | 2018-03-20 | 2018-03-20 | POE power supply camera |
Applications Claiming Priority (1)
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CN201810230027.8A CN108200349B (en) | 2018-03-20 | 2018-03-20 | POE power supply camera |
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CN108200349A CN108200349A (en) | 2018-06-22 |
CN108200349B true CN108200349B (en) | 2024-05-17 |
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CN201810230027.8A Active CN108200349B (en) | 2018-03-20 | 2018-03-20 | POE power supply camera |
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