CN207150724U - Intelligent ccd image sensor on-chip system - Google Patents

Intelligent ccd image sensor on-chip system Download PDF

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Publication number
CN207150724U
CN207150724U CN201721260964.5U CN201721260964U CN207150724U CN 207150724 U CN207150724 U CN 207150724U CN 201721260964 U CN201721260964 U CN 201721260964U CN 207150724 U CN207150724 U CN 207150724U
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China
Prior art keywords
circuit
image sensor
ccd image
chip system
signal processing
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Expired - Fee Related
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CN201721260964.5U
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Chinese (zh)
Inventor
谢智峰
王家园
吕莉
赵嘉
曾任贤
张�浩
樊棠怀
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Nanchang Institute of Technology
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Nanchang Institute of Technology
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Priority to CN201721260964.5U priority Critical patent/CN207150724U/en
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Abstract

The utility model is related to a kind of intelligent ccd image sensor on-chip system includes：Some imaging systems, the output signal of each imaging system is all connected with the respective input of multichannel analog switch, the multichannel analog switch is suitable to the output signal for switching each imaging system, to be inputted through AD Acquisition Circuit to digital signal processing circuit to be converted into digital image data；The digital signal processing circuit is suitable to digital image data being converted into rgb signal；And the control terminal of the control output end connecting multi-channel analog switch of the digital signal processing circuit, selected with switching channel.

Description

Intelligent ccd image sensor on-chip system
Technical field
The utility model belongs to infrared imaging field, and in particular to a kind of intelligent ccd image sensor on-chip system.
Background technology
With the development of intelligent video analysis technology, the scale of monitoring system is just in rapid growth.
Occur utilizing on-chip system in the prior art（SoC：System-on-a-chip）Carry out video frequency signal processing Technical scheme, but imaging system and the one-to-one carry out Computer Vision of on-chip system are also only limitted in the prior art.
Therefore, if can design a kind of on-chip system can handle the video signal of multiple imaging systems collection being capable of pole Big raising hardware integration degree, reduce production cost.
Utility model content
The purpose of this utility model is to provide a kind of intelligent ccd image sensor on-chip system, and it is multiple that it is suitable to processing The video signal of imaging system collection.
In order to solve the above-mentioned technical problem, the utility model provides a kind of intelligent ccd image sensor on-chip system, Including：
Some imaging systems, the output signal of each imaging system are all connected with the respective input of multichannel analog switch, The multichannel analog switch is suitable to the output signal for switching each imaging system, to be inputted through AD Acquisition Circuit to data signal Circuit is managed to be converted into digital image data；The digital signal processing circuit is suitable to digital image data being converted into RGB letters Number；And the control terminal of the control output end connecting multi-channel analog switch of the digital signal processing circuit, with switching channel Selection.
Further, the AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Wherein The modulate circuit includes：Second order RC lowpass filter, the operational amplifier being connected with the second order RC lowpass filter；The fortune Calculate the input end of analog signal of the output end connection AD conversion chip of amplifier.
Further, the operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And
The output end of the in-phase proportion computing circuit connects two high-frequency diodes；Wherein
The anode of first high-frequency diode is connected with the output end of in-phase proportion computing circuit, its negative electrode and power end phase Even；And
The negative electrode of second high-frequency diode is connected with the output end of in-phase proportion computing circuit, its anode and ground connection.
Further, the AD conversion chip includes：The analog signal being connected with the output end of in-phase proportion computing circuit is defeated Enter end, and bias reference voltage input, i.e. VREF ends and VINB ends；The VREF ends and VINB ends are connected with a VINB values Control circuit, to control the input voltage at VINB ends.
Further, the VINB duty control circuits include：Partial pressure conditioned circuit, partial pressure electricity is obtained from the partial pressure conditioned circuit The voltage follower of pressure value.
Further, the control terminal of the digital signal processing circuit connects a sequence circuit；Fitted by the sequence circuit In providing corresponding time sequence signal for AD conversion chip and/or CCD photosurfaces.
Further, the digital signal processing circuit is also associated with USB communication interface circuits；Connect by USB communications Mouth circuit is suitable to send digital image data to PC.
The beneficial effects of the utility model are, intelligent ccd image sensor on-chip system of the present utility model its can The video signal of multiple imaging systems collection is handled, reduces the hardware cost of SoC systems, has that system cost is low, power consumption It is low, the advantages of integrated level is high.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is the theory diagram of intelligent ccd image sensor on-chip system of the present utility model；
Fig. 2 is the circuit theory diagrams of modulate circuit of the present utility model；
Fig. 3 is the circuit theory diagrams of VINB duty control circuits of the present utility model.
Embodiment
The utility model is described in further detail presently in connection with accompanying drawing.These accompanying drawings are simplified schematic diagram, Only illustrate basic structure of the present utility model in a schematic way, therefore it only shows the composition relevant with the utility model.
Embodiment
Fig. 1 is the theory diagram of intelligent ccd image sensor on-chip system of the present utility model；
Fig. 1 is referred to, present embodiments provides a kind of intelligent ccd image sensor on-chip system, including：Some imagings System, the output signal of each imaging system are all connected with the respective input of multichannel analog switch, and the multichannel analog is opened The output signal for being suitable to switch each imaging system is closed, to be inputted through AD Acquisition Circuit to digital signal processing circuit to be converted into counting Word view data；The digital signal processing circuit is suitable to digital image data being converted into rgb signal；And the numeral letter The control terminal of the control output end connecting multi-channel analog switch of number process circuit, is selected with switching channel.
The digital signal processing circuit, multichannel analog switch, AD Acquisition Circuit can be integrated in SoC on-chip systems In, the digital signal processing circuit can be, but not limited to use DSP Processor, the multichannel analog switch can with but it is unlimited In using the path analoging switch of MPC508AU 8.Imaging system include filter plate and and camera lens, camera lens include eyeglass and aperture, and For gathering the CCD photosurfaces of object image；The CCD photosurfaces are suitable to the output signal of output imaging system.
A kind of preferred embodiment as AD Acquisition Circuit.
Fig. 2 is the circuit theory diagrams of modulate circuit of the present utility model；
As shown in Fig. 2 the AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Its Described in modulate circuit include：Second order RC lowpass filter, the operational amplifier being connected with the second order RC lowpass filter；It is described The input end of analog signal of the output end connection AD conversion chip of operational amplifier.
Further, the operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And institute The output end for stating in-phase proportion computing circuit connects two high-frequency diodes；Wherein the first high-frequency diode D1 anode is the same as with compared with The output end of example computing circuit is connected, and its negative electrode is connected with power end；And second high-frequency diode D2 negative electrode with compared with The output end of example computing circuit is connected, its anode and ground connection.
Master clock frequency is set in the design as 5MHz, the frequency and master clock of the analog signal of this CCD photosurfaces output Frequency is identical, and 5MHz.In order to ensure CCD photosurface analog output signals after low pass filter it is undistorted, will filter Device cut-off frequency is arranged to 5 times i.e. 25MHz of simulation output frequency, thus in low pass filter resistance R34 and resistance R35 resistance Value is 2.4, and electric capacity C66 and electric capacity C67 are 1nF.To the analog signal after LPF first with accurate partial pressure electricity Resistance is adjusted to the half of original signal voltage swing, then carries out twice of amplification with operational amplifier, recently enters in AD conversion chip Sampling.Operational amplifier can improve the driving force of signal.Ensure that operational amplifier output analog signal is undistorted, computing The bandwidth of amplifier have to be larger than the bandwidth of its input signal.
Operational amplifier uses the inexpensive operational amplifier A D8602 of ADI companies；AD conversion chip is suitable to use AD9240。
The AD conversion chip includes：The input end of analog signal being connected with the output end of in-phase proportion computing circuit, i.e., VINA ends；And bias reference voltage input, i.e. VREF ends and VINB ends；The VREF ends and VINB ends are connected with a VINB Duty control circuit, to control the input voltage at VINB ends.AD9240 can adjust VREF ends and VINB by external reference voltage The value at end adjusts the scope at its simulation input VINA ends.Peripheral circuit on AD9240 specifically may refer to the skill of the chip Art handbook.
Fig. 3 is the circuit theory diagrams of VINB duty control circuits of the present utility model.
The VINB duty control circuits include：Partial pressure conditioned circuit, branch pressure voltage value is obtained from the partial pressure conditioned circuit Voltage follower.
Wherein, the magnitude of voltage at the VREF ends is determined by the power supply module of this intelligent ccd image sensor on-chip system； VINB values are controlled by the VINB duty control circuits；The integrated operational amplifier of the voltage follower is suitable to use LMV358.
In figure, VCC_5V REF, VCC_5VA come to power supply module.
The control terminal of the digital signal processing circuit connects a sequence circuit；AD is suitable for by the sequence circuit to turn Change chip and/or CCD photosurfaces provide corresponding time sequence signal.
The sequence circuit can use the Cyclone IV Series FPGA chips EP4CE30F23C8 of altera corp To realize, there is provided the control signal of AD conversion chip, can also be using FPGA chips EP4CE30F23C8 simultaneously as data signal Process circuit uses, to improve the degree of integration of whole circuit.
The digital signal processing circuit is also associated with USB communication interface circuits；Fitted by the USB communication interface circuits Sent in by digital image data to PC.
The USB communication interface circuits can be, but not limited to use USB2.0 or USB3.0.
Using it is above-mentioned according to desirable embodiment of the present utility model as enlightenment, pass through above-mentioned description, related work people Member can carry out various changes and amendments in the range of without departing from this item utility model technological thought completely.This item is real The content being not limited to new technical scope on specification, it is necessary to which its technology is determined according to right Property scope.

Claims (7)

  1. A kind of 1. intelligent ccd image sensor on-chip system, it is characterised in that including：
    Some imaging systems, the output signal of each imaging system is all connected with the respective input of multichannel analog switch, described Multichannel analog switch is suitable to the output signal for switching each imaging system, to be inputted through AD Acquisition Circuit to Digital Signal Processing electricity Road is to be converted into digital image data；
    The digital signal processing circuit is suitable to digital image data being converted into rgb signal；And
    The control terminal of the control output end connecting multi-channel analog switch of the digital signal processing circuit, is selected with switching channel Select.
  2. 2. intelligent ccd image sensor on-chip system according to claim 1, it is characterised in that
    The AD Acquisition Circuit includes：Modulate circuit, the AD conversion chip being connected with the modulate circuit；Wherein
    The modulate circuit includes：Second order RC lowpass filter, the operational amplifier being connected with the second order RC lowpass filter；
    The input end of analog signal of the output end connection AD conversion chip of the operational amplifier.
  3. 3. intelligent ccd image sensor on-chip system according to claim 2, it is characterised in that
    The operational amplifier uses in-phase proportion computing circuit, and its multiplication factor is not less than 2 times；And
    The output end of the in-phase proportion computing circuit connects two high-frequency diodes；Wherein
    The anode of first high-frequency diode is connected with the output end of in-phase proportion computing circuit, and its negative electrode is connected with power end；With And
    The negative electrode of second high-frequency diode is connected with the output end of in-phase proportion computing circuit, its anode and ground connection.
  4. 4. intelligent ccd image sensor on-chip system according to claim 3, it is characterised in that
    The AD conversion chip includes：The input end of analog signal being connected with the output end of in-phase proportion computing circuit, and
    Bias reference voltage input, i.e. VREF ends and VINB ends；
    The VREF ends and VINB ends are connected with a VINB duty control circuits, to control the input voltage at VINB ends.
  5. 5. intelligent ccd image sensor on-chip system according to claim 4, it is characterised in that
    The VINB duty control circuits include：Partial pressure conditioned circuit, the voltage of branch pressure voltage value is obtained from the partial pressure conditioned circuit Follower.
  6. 6. intelligent ccd image sensor on-chip system according to claim 5, it is characterised in that
    The control terminal of the digital signal processing circuit connects a sequence circuit；
    AD conversion chip is suitable for by the sequence circuit and/or CCD photosurfaces provide corresponding time sequence signal.
  7. 7. intelligent ccd image sensor on-chip system according to claim 1, it is characterised in that
    The digital signal processing circuit is also associated with USB communication interface circuits；
    It is suitable to send digital image data to PC by the USB communication interface circuits.
CN201721260964.5U 2017-09-28 2017-09-28 Intelligent ccd image sensor on-chip system Expired - Fee Related CN207150724U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201721260964.5U CN207150724U (en) 2017-09-28 2017-09-28 Intelligent ccd image sensor on-chip system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201721260964.5U CN207150724U (en) 2017-09-28 2017-09-28 Intelligent ccd image sensor on-chip system

Publications (1)

Publication Number Publication Date
CN207150724U true CN207150724U (en) 2018-03-27

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113110237A (en) * 2021-05-12 2021-07-13 杭州仁牧科技有限公司 Multichannel high-speed signal acquisition system based on big data and processing method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113110237A (en) * 2021-05-12 2021-07-13 杭州仁牧科技有限公司 Multichannel high-speed signal acquisition system based on big data and processing method thereof

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Granted publication date: 20180327

Termination date: 20190928