CN215833970U - Face detection recognition circuit, device and face entrance guard control device - Google Patents
Face detection recognition circuit, device and face entrance guard control device Download PDFInfo
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- CN215833970U CN215833970U CN202121785690.8U CN202121785690U CN215833970U CN 215833970 U CN215833970 U CN 215833970U CN 202121785690 U CN202121785690 U CN 202121785690U CN 215833970 U CN215833970 U CN 215833970U
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Abstract
The utility model provides a face detection recognition circuit, a face detection recognition device and a face access control device, wherein the face detection recognition circuit comprises an adapter interface, an image sensor, a power management circuit and a video processing unit, the power management circuit acquires a power supply through the adapter interface and converts the power supply to provide a working power supply, the image sensor is used for acquiring image information, the video processing unit carries out face recognition according to the image information, the video processing unit is a movidius computing chip, and compared with chips based on an ARM series, the movidius computing chip has the advantages of being fast in starting and low in power consumption, and therefore recognition efficiency is improved.
Description
Technical Field
The utility model belongs to the technical field of face recognition, and particularly relates to a face detection recognition circuit, a face detection recognition device and a face access control device.
Background
In recent years, with the development of the internet of things, the application of face detection and recognition gradually enters daily life, and various household intelligent and security devices are popularized. The development of face detection and identification is also continuously updated, the devices such as access control, door lock, channel and the like are gradually transited to the application of the face from biological identification such as card swiping, fingerprint, iris, finger vein and the like, and the face mode and the user experience are continuously improved. The mode of the intelligent equipment is also continuously upgraded, the original contact mode is developed into the existing non-contact mode, the actual application of the intelligent equipment puts great requirements on the speed precision of face recognition and the like, and new requirements on the size and the adaptability of the intelligent equipment are also put forward.
The traditional face recognition equipment adopts traditional chips based on ARM series, and has the defects of high power consumption, low starting speed and low recognition efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a face detection and recognition circuit, which aims to solve the problems of high power consumption and low recognition efficiency of the traditional face recognition equipment.
The first aspect of the embodiment of the utility model provides a face detection and recognition circuit, which comprises an adapter interface, an image sensor, a power management circuit and a video processing unit;
the power management circuit is electrically connected with the image sensor, the adapter interface and the video processing unit respectively, and the video processing unit is also electrically connected with the image sensor and the adapter interface respectively;
the power management circuit is used for acquiring a power supply through an adapter interface and converting and outputting a working power supply to the image sensor and the video processing unit;
the image sensor is used for collecting image information and feeding the image information back to the video processing unit;
and the video processing unit is used for carrying out face detection and identification according to the video processing unit and feeding back detection information to a terminal through the adapter interface, wherein the video processing unit is a movidius computing chip.
In one embodiment, the adapter interface, the image sensor, the power management circuit and the video processing unit are integrally disposed on the same circuit board.
In one embodiment, the image sensor is a CMOS sensor.
In one embodiment, the CMOS sensor is model OV 2718.
In one embodiment, the power management circuit includes a plurality of DC/DC conversion circuits electrically connected to the adapter interface, the image sensor and the video processing unit, and a plurality of LDO conversion circuits electrically connected to the adapter interface, the image sensor and the video processing unit.
In one embodiment, the power management circuit is a power management chip.
In one embodiment, the adapter interface is a USB interface.
In one embodiment, the USB interface model is USB2.0 or USB 3.0.
A second aspect of the embodiments of the present invention provides a face detection and recognition apparatus, including the face detection and recognition circuit described above.
The third aspect of the embodiment of the utility model provides a face access control device, which comprises an access control device and the face detection and recognition device, wherein the access control device is electrically connected with the face detection and recognition device.
The embodiment of the utility model adopts the adapter interface, the image sensor, the power management circuit and the video processing unit to form the face detection recognition circuit, wherein the power management circuit obtains a power supply through the adapter interface and converts the power supply to provide a working power supply, the image sensor is used for obtaining image information, the video processing unit carries out face recognition according to the image information, the video processing unit is a movidius computing chip, and compared with chips based on an ARM series, the movidius computing chip has the characteristics of quick start and low power consumption, so that the recognition efficiency is improved.
Drawings
Fig. 1 is a schematic diagram of a first structure of a face detection and recognition circuit according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a second structure of the face detection and recognition circuit according to the embodiment of the present invention;
fig. 3 is a schematic diagram of a second structure of the face detection and recognition circuit according to the embodiment of the present invention;
fig. 4 is a schematic structural diagram of a face access control device according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, 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 merely illustrative of the utility model and are not intended to limit the utility model.
Furthermore, 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. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
The first aspect of the embodiment of the utility model provides a face detection and identification circuit.
As shown in fig. 1, fig. 1 is a schematic diagram of a first structure of a face detection and recognition circuit according to an embodiment of the present invention, in this embodiment, the face detection and recognition circuit includes an adapter interface 10, an image sensor 30, a power management circuit 20, and a video processing unit 40;
the power management circuit 20 is electrically connected to the image sensor 30, the adapter interface 10 and the video processing unit 40, and the video processing unit 40 is also electrically connected to the image sensor 30 and the adapter interface 10;
a power management circuit 20 for obtaining a power supply through the adapter interface 10 and converting and outputting a working power to the image sensor 30 and the video processing unit 40;
the image sensor 30 is used for collecting image information and feeding the image information back to the video processing unit 40;
and the video processing unit 40 is used for performing face detection recognition according to the video processing unit 40 and feeding back detection information to the terminal through the adapter interface 10, wherein the video processing unit 40 is a movidius computing chip U4.
In this embodiment, the adapter interface 10 is used to connect a terminal, the terminal may be a notebook, a computer, a monitoring device, etc., when the adapter interface 10 is connected with the terminal, the power supply provided by the terminal is obtained, and meanwhile, a communication connection with the terminal is established, the power management circuit 20 implements a power conversion function, performs power conversion such as voltage boosting, voltage stabilizing, filtering, etc. on the power supply input by the adapter interface 10, and outputs a working power supply of a voltage class required by the image sensor 30 and the video processing unit 40, and the image sensor 30 and the video processing unit 40 implement a face detection and recognition function, wherein the image sensor 30 utilizes a photoelectric conversion function of a photoelectric device to convert an optical image on a photosensitive surface into an electrical signal in a corresponding proportional relation with the optical image and feed back the electrical signal to the video processing unit 40, and the video processing unit 40 performs face detection and recognition on the collected image information, and feeds back the detection information to the terminal through the adapter interface 10 so that the terminal can acquire the detection information and perform secondary use.
Among other things, video processing unit 40 employs movidius computing chip U4, which has 12 programmable cores, an Image Signal Processor (ISP) and hardware accelerators, with ultra-high computing bandwidth. The method has the advantages that the computing performance of more than 1TFLOPs is provided, compared with an ARM (advanced RISC machine) common embedded chip, various deep learning algorithms can be operated simultaneously, the programmable vector VLIW processor provided by the main chip can optimize data localization, an embedded platform is utilized, powerful user experience is realized, pure front-end local computing can be realized, cloud computing resources are not needed, the acquired data are subjected to face detection and recognition, meanwhile, the power consumption of the product is as low as 3w, and the requirement of ultra-low power consumption of a client is met.
Through adopting movidius to calculate chip U4, have quick start (being less than 1.5S), the AI vision calculation module that possesses multiple visual identification algorithm ability, local calculation has, low-power consumption, high performance, small-size, dispose simple characteristics, can support many people face detection and tracking simultaneously, face image snapshot and local face identification etc. have realized face detection identification circuit' S functional diversity, can be used to unmanned business surpass, automatic vending, intelligent commercial display, face verification, face snapshot, the face entrance guard, scenes such as intelligent robot.
The Image sensor 30 is mainly divided into three types, namely, a CCD (Charge Coupled Device), a CMOS (Complementary Metal Oxide Semiconductor), and a CIS (Contact Image sensor), which can be selected according to the performance such as resolution and power consumption, in one embodiment, as shown in fig. 2 or 3, the Image sensor 30 is a CMOS sensor U3, and compared with a CCD sensor, the CMOS sensor U3 has lower power consumption, so as to further achieve the purpose of low power consumption of the face detection circuit, meanwhile, the type of the CMOS sensor U3 can be selected according to the requirement, and in one embodiment, the type of the CMOS sensor U3 is OV 2718.
The adapter interface 10 may be designed according to the type of the terminal, in one embodiment, as shown in fig. 2 or fig. 3, the adapter interface 10 is a USB interface U1, and meanwhile, the USB interface U1 may be specifically selected according to the specific interface type requirement, and in one embodiment, the USB interface U1 is USB2.0 or USB3.0 in model.
The power conversion circuit can select different types of conversion circuits according to the requirement, such as one or more of the DC/DC conversion circuit 21, the LDO voltage stabilizing circuit, and the power conversion chip, and particularly, according to the requirement, in one embodiment, as shown in fig. 2, the power management circuit 20 includes a multi-way DC/DC conversion circuit 21 and a multi-way LDO conversion circuit 22, the multi-way DC/DC conversion circuit 21 is electrically connected to the adapter interface 10, the image sensor 30, and the video processing unit 40, respectively, the multi-way LDO conversion circuit 22 is electrically connected to the adapter interface 10, the image sensor 30, and the video processing unit 40, respectively, and the image sensor 30 and the video processing unit 40 obtain the working power of different voltage levels through the multi-way DC/DC conversion circuit 21 and the multi-way LDO conversion circuit 22 to implement the power-on operation, in one embodiment, the DC/DC conversion circuit 21 is provided with three paths, and the LDO conversion circuit 22 is provided with two paths.
In another embodiment, as shown in fig. 3, the power management circuit 20 is a power management chip U2, and the power management chip U2 is internally integrated with the multiple DC/DC converter circuit 21 and the multiple LDO converter circuit 22.
The embodiment of the utility model adopts the adapter interface 10, the image sensor 30, the power management circuit 20 and the video processing unit 40 to form a face detection recognition circuit, wherein the power management circuit 20 obtains a power supply through the adapter interface 10 and converts the power supply to provide a working power supply, the image sensor 30 is used for obtaining image information, the video processing unit 40 performs face recognition according to the image information, the video processing unit 40 is a movidia calculating chip U4, and compared with chips based on an ARM series, the movidia calculating chip U4 has the characteristics of quick start and low power consumption, so that the recognition efficiency is improved.
Further, in order to simplify the circuit structure, in one embodiment, the adapter interface 10, the image sensor 30, the power management circuit 20 and the video processing unit 40 are integrated on the same circuit board, so as to reduce the size of the face detection and recognition circuit, thereby facilitating the rapid integration of users.
The present invention further provides a face detection and recognition apparatus 100, wherein the face detection and recognition apparatus 100 includes a face detection and recognition circuit, the specific structure of the face detection and recognition circuit refers to the above embodiments, and the face access control apparatus 200 adopts all technical solutions of all the above embodiments, so that the face access control apparatus at least has all the beneficial effects brought by the technical solutions of the above embodiments, and details are not repeated herein.
As shown in fig. 4, the present invention further provides a face access control device 200, where the face access control device 200 includes an access control device 200 and a face detection recognition device 100, and the specific structure of the face detection recognition device 100 refers to the above embodiments, and since the face access control device 200 adopts all the technical solutions of all the above embodiments, at least all the beneficial effects brought by the technical solutions of the above embodiments are achieved, and no further description is provided here. The access control device 200 is electrically connected to the face detection and recognition device 100.
In this embodiment, the access control device 200 is connected to the adapter interface 10 in the face detection and recognition device 100 to provide a power supply and perform information interaction, and the access control device 200 obtains the face detection information output by the access control device 200 to implement access control management.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present invention, and are intended to be included within the scope of the present invention.
Claims (10)
1. A face detection recognition circuit is characterized by comprising an adapter interface, an image sensor, a power management circuit and a video processing unit;
the power management circuit is electrically connected with the image sensor, the adapter interface and the video processing unit respectively, and the video processing unit is also electrically connected with the image sensor and the adapter interface respectively;
the power management circuit is used for acquiring a power supply through an adapter interface and converting and outputting a working power supply to the image sensor and the video processing unit;
the image sensor is used for collecting image information and feeding the image information back to the video processing unit;
and the video processing unit is used for carrying out face detection and identification according to the video processing unit and feeding back detection information to a terminal through the adapter interface, wherein the video processing unit is a movidius computing chip.
2. The face detection recognition circuit of claim 1, wherein the adapter interface, the image sensor, the power management circuit, and the video processing unit are integrally disposed on a same circuit board.
3. The face detection recognition circuit of claim 2, wherein the image sensor is a CMOS sensor.
4. The face detection recognition circuit of claim 3, wherein the CMOS sensor is of type OV 2718.
5. The face detection and recognition circuit of any one of claims 1 to 4, wherein the power management circuit comprises a plurality of DC/DC conversion circuits and a plurality of LDO conversion circuits, the plurality of DC/DC conversion circuits are electrically connected to the adapter interface, the image sensor and the video processing unit respectively, and the plurality of LDO conversion circuits are electrically connected to the adapter interface, the image sensor and the video processing unit respectively.
6. The face detection and recognition circuit as claimed in any one of claims 1 to 4, wherein the power management circuit is a power management chip.
7. The face detection recognition circuit of claim 6, wherein the adapter interface is a USB interface.
8. The face detection and recognition circuit of claim 7, wherein the USB interface model is USB2.0 or USB 3.0.
9. A face detection and recognition device, comprising the face detection and recognition circuit according to any one of claims 1 to 8.
10. A face access control device, characterized in that, include access control device and according to claim 9 face detection recognition device, access control device with face detection recognition device electric connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785690.8U CN215833970U (en) | 2021-08-02 | 2021-08-02 | Face detection recognition circuit, device and face entrance guard control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121785690.8U CN215833970U (en) | 2021-08-02 | 2021-08-02 | Face detection recognition circuit, device and face entrance guard control device |
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| Publication Number | Publication Date |
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| CN215833970U true CN215833970U (en) | 2022-02-15 |
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| CN202121785690.8U Active CN215833970U (en) | 2021-08-02 | 2021-08-02 | Face detection recognition circuit, device and face entrance guard control device |
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| CN (1) | CN215833970U (en) |
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