CN203984550U - A kind of control circuit of 3D camera - Google Patents

A kind of control circuit of 3D camera Download PDF

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Publication number
CN203984550U
CN203984550U CN201420439320.2U CN201420439320U CN203984550U CN 203984550 U CN203984550 U CN 203984550U CN 201420439320 U CN201420439320 U CN 201420439320U CN 203984550 U CN203984550 U CN 203984550U
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control unit
unit
camera
control circuit
model
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CN201420439320.2U
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蔡文
曾伟
沈君健
陈中奎
许亮峰
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HANGZHOU GOOD-HOOD TECHNOLOGY Co Ltd
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HANGZHOU GOOD-HOOD TECHNOLOGY Co Ltd
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Abstract

The control circuit of the utility model 3D camera, comprises control unit, image acquisition units, memory cell, clock unit, man-machine interaction unit and Power Management Unit; Described image acquisition units comprises near infrared sensor, image capture controller and at least 2 CMOS cameras, the input of described CMOS camera is connected with the output of described control unit, the control end of described CMOS camera is connected with described control unit, the output of described CMOS camera is connected with the input of described image capture controller, the output of described image capture controller is connected with the input of described control unit, and described near infrared sensor is connected with described control unit.The utility model is dimension information, monochrome information and the range information of capture movement object efficiently.

Description

A kind of control circuit of 3D camera
Technical field
The utility model relates to three-dimensional imaging field, relates in particular to a kind of control circuit of 3D camera.
Background technology
Along with the development of digital image processing techniques and device fabrication level, 3D shows has become the trend that is very popular that shows industry.In recent years, along with the progress of dimension display technologies, the particularly input of a series of products such as 3D TV, 3D game and 3D film, electronic market has started a upsurge about three-dimensional imaging and demonstration, and therefore three-dimensional imaging also becomes the study hotspot in iconology.
But, existing 3D camera is all that the bore hole 3D Display Technique of the image matching technology synthetic based on double image and post lens is confined to use simulation of human body to learn the image of compound stereoscopic, the dimension information of capture movement object, monochrome information and range information efficiently, needing the absolute coordinate of capture movement object and the occasion of monochrome information, the function of common 3D camera is restricted.
Utility model content
Goal of the invention of the present utility model is the limitation that solves above-mentioned existing three-dimensional imaging camera, and a kind of control circuit of 3D camera of dimension information, monochrome information and range information of the object of capture movement is efficiently provided.
The control circuit of a kind of 3D camera of the utility model, comprise the control unit for data processing, for gathering the image acquisition units of image brightness and range data, for the memory cell of access data, be used to control unit that the clock unit of clock signal is provided, for the man-machine interaction unit to control unit transmitting-receiving instruction be the Power Management Unit that above-mentioned all unit power, described control unit is connected with described image acquisition units, memory cell, clock unit and man-machine interaction unit respectively, described image acquisition units comprises near infrared sensor, image capture controller and at least 2 CMOS cameras, the input of described CMOS camera is connected by I2C interface with the output of described control unit, the control end of described CMOS camera is connected with described control unit, the output of described CMOS camera is connected by USB interface with the input of described image capture controller, the output of described image capture controller is connected by USB interface with the input of described control unit, described near infrared sensor is connected with described control unit.
Adopt after above structure, the utility model compared with prior art, has the following advantages:
The control circuit of a kind of 3D camera of the utility model is by the image of at least 2 CMOS camera collection different angles of image acquisition units, the picture of taking using CMOS camera described in one of them is as with reference to basis, find the identical point of other CMOS camera pictures taken, obtain the identical point of the outer surface of the object of different CMOS camera acquisitions, apply the principle of simulation of human body to put into face compound stereoscopic image, and obtain at the same time image luminance information; Unlike the prior art, the utility model combines CMOS camera and near infrared sensor, send modulated near infrared light by described near infrared sensor, meet object back reflection, described near infrared sensor receives after reflected signal, differ from or phase difference by the transmitting of described clock unit compute ray and reflection interval via described control unit, then by the range data that calculates testee of described control unit; The range data that the image of described CMOS camera collection and described near infrared sensor gather is by the calculating of described control unit, obtain the cloud coordinate of testee, described cloud coordinate is absolute coordinate, finally obtains the dimension information of testee by the computing of described control unit.With the work of control unit data processing and the each unit of scheduling, and use storage unit stores data.The utility model is dimension information, monochrome information and the range information of capture movement object efficiently.
As preferably, the control circuit of described 3D camera also comprises wireless communication unit, and described wireless communication unit is connected with described control unit by USB interface.Described radio communication unit provides remote linkage, has greatly improved the mobility and flexibility of 3D camera data, provides convenience to the transmission of data.
As preferably, the model of described wireless communication unit is RT8188 USB-WIFI.Described RT8188 USB-WIFI module is a low-power consumption, and WIFI module that high stability is wireless can support the wireless device of this standard to be connected to each other with other, can set up flexibly WIFI wireless network, and wireless transmission speed is fast.Can carry out expediently the collection/transmission of data in conjunction with far module communication, the applied 3D camera of the utility model is portable movable equipment, the information exchange that 3D camera capture is grasped is crossed WIFI wireless network and is transferred to rapidly on other application apparatuss, is convenient to share at any time, fast processing.
As preferably, described control unit adopts iMAPx820 chip, described iMAP820 integrated chip double-core Cortex-A5, the double-core Mali-400 3D GPU of dominant frequency up to 1.2GHz, the powerful coprocessor such as coding and decoding video, 1,200 ten thousand pixel image processing units of 2D GPU, full HD full format, also provides the numerous Peripheral Interfaces including ADC, DMIC, Ethernet, CAMIF, DTV TS.Described iMAPx820 supports dynamic electric voltage frequency modulation technology (DVFS), can provide longer battery for mobile intelligent terminal, more efficiently, picture output clearly, meets the demand to high-performance, low-Power Multicore application processor.Adopt iMAPx820 chip can regulate and control near infrared sensor, the CMOS first-class multinomial equipment of make a video recording, the image quality of high definition is in reservation simultaneously, more accurately catches monochrome information simultaneously.
As preferably, described memory cell comprises DDR3 internal memory, NANDFLASH internal memory and TF card, and described DDR3 internal memory, NANDFLASH internal memory and TF card are connected with control unit respectively.Described DDR3 internal memory provides higher operation usefulness and lower voltage; The described non-linear macrocell pattern of the inner employing of NANDFLASH internal memory, for the realization of solid-state large-capacity internal memory provides cheap effective solution.The advantages such as it is larger that NANDFLASH memory has capacity, and rewriting speed is fast, are applicable to the storage of mass data; Described TF card is a kind of microminiature card, and this storage card is widely used in mobile phone, MP4, MP3 walkman, PDA palmtop PC.Adopt multi-form internal memory, make described memory cell compatible with mobile device more neatly, the utility model possesses portable performance, makes transmitting data information more convenient.
As preferably, the model of described Power Management Unit is AXP202.Described Power Management Unit has the output of LDO direct current, the output of DC-DC direct current, switch control interface, I2C control unit, GPIO interface; Described I2C control unit is for controlling the electrifying timing sequence of power supply, control unit, clock control cell, image acquisition units are received respectively in the output of LDO direct current, and described control unit, described memory cell and charhing unit are received respectively in the output of DC-DC direct current.Described AXP202 maximum charging current can reach 1.8A for single core lithium battery and need the application of multiple power supplies conversion output, provide be simple and easy to and complete power solution that can flexible configuration.Ideally meet the demand for the power supply of each unit.
As preferably, it is PCF8563 that described clock unit adopts the model of the CMOS real-time timepiece chip of low-power consumption, and described clock unit is communicated by letter with control unit employing common communication protocol I2C, to arrange and to obtain local clock data.The required power consumption of described PCF8563 chip is extremely low, stable performance, the rapidly dimension information of capture movement object, monochrome information and range information.
Brief description of the drawings
Fig. 1 is the circuit structure block diagram of the utility model three-dimensional camera.
Fig. 2 be shown in Fig. 1 in circuit image acquisition units circuit connect block diagram.
Fig. 3 be shown in Fig. 1 in circuit Power Management Unit circuit connect block diagram.
Shown in figure 1, control unit, 2, image acquisition units, 201, near infrared sensor, 202, image capture controller, 203, CMOS camera, 3, memory cell, 4, clock unit, 5, man-machine interaction unit, 6, Power Management Unit, 7, wireless communication unit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1-2, the control circuit of 3D camera comprises the control unit 1 for data processing, for gathering the image acquisition units 2 of image brightness and range data, for the memory cell 3 of access data, be used to control unit 1 that the clock unit 4 of clock signal is provided, for receive and dispatch the man-machine interaction unit 5 of instruction and the Power Management Unit 6 for above-mentioned all unit power supply to control unit 1, described control unit 1 is connected with described image acquisition units 2, memory cell 3, clock unit 4 and man-machine interaction unit 5 respectively, described image acquisition units 2 comprises near infrared sensor 201, image capture controller 202 and at least 2 CMOS cameras 203, the input of described CMOS camera 203 is connected by I2C interface with the output of described control unit 1, the control end of described CMOS camera 203 is connected with described control unit 1, the output of described CMOS camera 203 is connected by USB interface with the input of described image capture controller 202, the output of described image capture controller 202 is connected by USB interface with the input of described control unit 1, described near infrared sensor 201 is connected with described control unit 1.The control circuit of described 3D camera also comprises wireless communication unit 7, and described wireless communication unit 7 is connected with described control unit 1 by USB interface.The model of described wireless communication unit 7 is RT8188 USB-WIFI.The model of described control unit 1 is iMAPx820.Described memory cell 3 comprises DDR3 internal memory, NANDFLASH internal memory and TF card, and described DDR3 internal memory, NANDFLASH internal memory and TF card are electrically connected with control unit 1 respectively.As shown in Figure 3, described Power Management Unit has the output of LDO direct current, the output of DC-DC direct current, switch control interface, I2C control unit, GPIO interface; Described I2C control unit is for controlling the electrifying timing sequence of power supply, control unit, clock control cell, image acquisition units are received respectively in the output of LDO direct current, and described control unit, described memory cell and charhing unit are received respectively in the output of DC-DC direct current.The model of described Power Management Unit 6 is AXP202.The model of described clock unit 4 is PCF8563, and described clock unit 4 interconnects by I2C interface with main control unit.
Power Management Unit 6 described in Power Management Unit circuit connection block diagram shown in Fig. 3 has omitted is connected with other each unit.
The utility model main control unit 1 is used to data processing and other each unit of scheduling controlling.
Launch with the embodiment of control circuit of the 3D camera that adopts 2 CMOS cameras 203 with regard to the utility model below, the utility model can for but be not limited to above-mentioned form.
The utility model discloses a kind of 3D camera based on TOF (Time-of-Flight) technology is a kind of novel, miniaturization stereoscopic imaging apparatus, monochrome information and the range information of seizure dynamic object that can real-time high-efficiency.The control circuit of the utility model 3D camera comprises that 2 for gathering the CMOS camera 203 of image, and described 2 CMOS cameras 203 capture image from the different angles of testee respectively.The picture capturing using the CMOS camera 203 described in one of them is as with reference to picture, find the common ground that picture that other CMOS cameras 203 capture and described reference picture have, obtain the identical point of the outer surface of object, obtain the stereopsis profile of object to put into face, meanwhile and obtain image brightness, send modulated near infrared light by described near infrared sensor 201, meet testee back reflection, described near infrared sensor 201 receives after reflected signal, differ from or phase difference by the 4 compute ray transmittings of described clock unit and reflection interval via described control unit 1, known near-infrared light wavelength and aerial transmission speed, calculate described camera and the range data of testee by time difference and transmission speed by described control unit 1 again, to produce depth information, in addition again in conjunction with the shooting of CMOS camera 203, just the three-D profile of object can be represented to the ground graphics mode of different distance presents with different colours.The range data that the image that described CMOS camera 203 gathers and described near infrared sensor 201 gather, by the calculating of described control unit 1, obtains the absolute coordinate of testee.By described control unit 1 calculation process, can obtain the actual three-dimensional external form of object under test again.Finally calculate dimension information and the positional information of testee.
First manipulate the camera to described image acquisition units 2 and near infrared sensor 201 by control unit 1 by human-computer interaction module and send instruction, after collecting data message, pass through computing and the transfer of control unit 1, the light and shade of the image collecting, dimension information and range information are stored in described memory cell 3 in the lump.By described radio communication unit by the information wireless mode information that transmits and receive data in real time.Described control unit 1 is equipped with multiple interfaces, can realize the perfection docking of plurality of devices.
More specifically, the model of described NANDFLASH internal memory is K9GBG08U0A, and the capacity of NANDFLASH internal memory is 2Gb, and the model of DDR3 internal memory is K4B4G1646D, and the capacity of DDR3 internal memory is 4GB, and the capacity of TF card is 8G.Memory size is enough used for routine, and the internal memory of different-format can meet compatible with conventional mobile device, and transmitting data information is more convenient.
As preferably, described image acquisition units 2 adopts Cypress USB3.0 chip CY3014 transmit image data to control unit 1.
Further, described control unit 1 adopts the microprocessor of main flow, disposal ability is powerful, Resources on Chip is abundant ARM A5 kernel as the control unit 1 of system.And implant the system based on the exploitation of open source linux 3.0.1 operating system, the while integrated function with developing various software expansion tri-dimensional photographing easily, meets the demand of user to tri-dimensional photographing.Described Power Management Unit 6 is AXP202, and Power Management Unit 6 has 5 road LDO direct current outputs, 3 road DC-DC direct current outputs, switch control interface, I2C control unit 1, GPIO interface.Switch control unit 1 is controlled the power supply of whole system, I2C control unit 1 is controlled the electrifying timing sequence of power supply, control unit 1 module, clock module, image capture module are received respectively in 5 road LDO direct current outputs, and data memory module, charhing unit are received respectively in 3 road DC-DC direct current outputs.
In addition, adopt LTW-008RGB-L breath light to drive LP55231, it is electrically connected described control unit 1, is used to indicate the operating state of equipment.
Further, described Power Management Unit 6 is used to unit that required DC power supply is provided, and wherein LDO1 provides the DC power supply of 3.3V/30mA for clock unit 4; Provide direct current 1.2V/2A through DC/DC SY8009ABC for ARM A5 series microprocessor; DC2 partly provides the DC power supply of 1.5V/1.6A for ARM A5 series microprocessor, this DC power supply offers DDR III internal memory simultaneously; LDO2 provides the DC power supply of 2.5V/200mA for ARM A5 series microprocessor; DC3 partly provides the DC power supply of 3.3V/1.2A for NAND FLASH, TF Card, RFDC unit, SPI Flash, USB OTG part.
In addition, this three-dimensional camera also has other expanded function, as micro projection function, image transmission function, share the functions such as three-dimensional body external form with the Internet good friend.The utility model can be widely applied to the fields such as industry, photo studio, education market, personal consumption electron-like.
Below be only described with regard to most preferred embodiment of the present utility model, but can not be interpreted as it is limitations on claims.The utility model is not limited only to above embodiment, and all various variations of doing in the protection range of the utility model independent claims are all in protection range of the present utility model.

Claims (7)

1. the control circuit of a 3D camera, it is characterized in that: comprise the control unit (1) for data processing, for gathering the image acquisition units (2) of image brightness and range data, for the memory cell (3) of access data, be used to control unit (1) that the clock unit (4) of clock signal is provided, for the man-machine interaction unit (5) to control unit (1) transmitting-receiving instruction be the Power Management Unit (6) that above-mentioned all unit power; Described control unit (1) is connected with described image acquisition units (2), memory cell (3), clock unit (4) and man-machine interaction unit (5) respectively;
Described image acquisition units (2) comprises near infrared sensor (201), image capture controller (202) and at least 2 CMOS cameras (203), the input of described CMOS camera (203) is connected by I2C interface with the output of described control unit (1), the control end of described CMOS camera (203) is connected with described control unit (1), the output of described CMOS camera (203) is connected by USB interface with the input of described image capture controller (202), the output of described image capture controller (202) is connected by USB interface with the input of described control unit (1), described near infrared sensor (201) is connected with described control unit (1).
2. the control circuit of a kind of 3D camera according to claim 1, it is characterized in that: the control circuit of described 3D camera also comprises wireless communication unit (7), described wireless communication unit (7) is connected with described control unit (1) by USB interface.
3. the control circuit of a kind of 3D camera according to claim 2, is characterized in that: the model of described wireless communication unit (7) is RT8188 USB-WIFI.
4. the control circuit of a kind of 3D camera according to claim 1, is characterized in that: the model of described control unit (1) is iMAPx820.
5. the control circuit of a kind of 3D camera according to claim 1, it is characterized in that: described memory cell (3) comprises DDR3 internal memory, NANDFLASH internal memory and TF card, described DDR3 internal memory, NANDFLASH internal memory and TF card is electrically connected with control unit (1) respectively.
6. the control circuit of a kind of 3D camera according to claim 1, is characterized in that: the model of described Power Management Unit (6) is AXP202.
7. the control circuit of a kind of 3D camera according to claim 1, is characterized in that: the model of described clock unit (4) is PCF8563, and described clock unit (4) interconnects by I2C interface with main control unit.
CN201420439320.2U 2014-08-06 2014-08-06 A kind of control circuit of 3D camera Active CN203984550U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098867A1 (en) * 2016-11-29 2018-06-07 歌尔科技有限公司 Photographing apparatus and image processing method therefor, and virtual reality device
CN108663682A (en) * 2017-03-28 2018-10-16 比亚迪股份有限公司 Barrier range-measurement system and the vehicle with it and TOF measurement method
CN109751988A (en) * 2019-02-14 2019-05-14 重庆融创视讯科技有限公司 A kind of real-time ice and snow of road based on naked eye 3D technology monitors analyte sensors automatically

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018098867A1 (en) * 2016-11-29 2018-06-07 歌尔科技有限公司 Photographing apparatus and image processing method therefor, and virtual reality device
CN108663682A (en) * 2017-03-28 2018-10-16 比亚迪股份有限公司 Barrier range-measurement system and the vehicle with it and TOF measurement method
CN109751988A (en) * 2019-02-14 2019-05-14 重庆融创视讯科技有限公司 A kind of real-time ice and snow of road based on naked eye 3D technology monitors analyte sensors automatically

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