CN108174061A - A kind of small-sized integrated rigid flexible system imaging circuit - Google Patents
A kind of small-sized integrated rigid flexible system imaging circuit Download PDFInfo
- Publication number
- CN108174061A CN108174061A CN201711318025.6A CN201711318025A CN108174061A CN 108174061 A CN108174061 A CN 108174061A CN 201711318025 A CN201711318025 A CN 201711318025A CN 108174061 A CN108174061 A CN 108174061A
- Authority
- CN
- China
- Prior art keywords
- circuit
- digiboard
- small
- power panel
- sized integrated
- 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.)
- Pending
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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
- H04N23/50—Constructional details
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
- H04N25/70—SSIS architectures; Circuits associated therewith
- H04N25/71—Charge-coupled device [CCD] sensors; Charge-transfer registers specially adapted for CCD sensors
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K1/00—Printed circuits
- H05K1/02—Details
- H05K1/14—Structural association of two or more printed circuits
- H05K1/147—Structural association of two or more printed circuits at least one of the printed circuits being bent or folded, e.g. by using a flexible printed circuit
Abstract
The invention belongs to visual light imaging technical fields, and in particular to a kind of small-sized integrated rigid flexible system imaging circuit.Including imaging plate, digiboard, power panel and interface board；Imaging plate, digiboard, power panel and interface board are rigid hard circuit board, are flexibly connected between imaging plate and digiboard, are flexibly connected between digiboard and power panel, are flexibly connected between power panel and interface board.The flexible connection is using the bending design of two-layer flexible S types, and two layers of conductive copper centre is dielectric polyimide class base material, and outer layer presses two cover films or welding resistance, and stratum is coordinated to design.The present invention replaces cable or winding displacement with flexible PCB, it is effectively improved visual light imaging device EMC designs, real-time, the reliability of signal transmission between raising plate, system is avoided to be total to earth signal crosstalk etc., the environmental suitability of equipment is improved, realizes the integrated of visual light imaging device, miniaturization, modularized design.
Description
Technical field
The invention belongs to visual light imaging technical fields, and in particular to a kind of small-sized integrated rigid flexible system imaging electricity
Road.
Background technology
It is highly integrated with the development of the miniaturization of electronic product, lightweight and multifunction, particularly semiconductor chip
Change the rapid development with high I/O numbers, lead to encapsulation technology to wafer-level package (CSP) and flip chip bonding encapsulation (Flip-chip) hair
Exhibition causes the variation of the Manufacturing Technology for PCB property changed, many new subjects is proposed to PCB industry.Simultaneously as
The made rapid progress of PCB technologies provides necessary condition to this electronic product to the lighter method development of smaller.Flexible PCB
It is one of current most important interconnection technique, from simple toy to having it in the electronic product of mobile phone, computer and complexity
Using.
Miniaturization, lightweight become the inexorable trend of visual light imaging device.Visual light imaging device is mainly by optics
Imaging system, ccd image sensor, imaging circuit and ontology casing composition.Wherein ccd image sensor, for receiving optics
The target information that imaging system obtains, is converted into detectable electric signal.Imaging circuit provides the bias voltage of sensor, driving
Clock and peripheral circuit, and signal processing, output image data are carried out to the analog voltage signal of sensor output.Have with
The installation interface of optical-mechanical system, can real time imagery and transmission data image signal, and complete and the communication and control of external system
Work processed.
In visual light imaging device, presence signal interconnection transmission, existing design largely use cable between each circuit
Or winding displacement mating connector mode is attached, and circuit board size space is caused to become larger, and increases crosstalk and spoke between signal wire
It penetrates, simultaneously because connector stitch is influenced there are the difference that parasitic inductance leads to interconnection ground impedance in various boards subsystem
Circuit board and the EMC of complete machine designs, making output image, there are noises and interference.
Invention content
The purpose of the present invention is to provide a kind of small-sized integrated rigid flexible system imaging circuits, and electricity is replaced with flexible PCB
Cable or winding displacement, be effectively improved visual light imaging device EMC design, improve plate between signal transmission real-time, reliability, avoid be
Altogether earth signal crosstalk etc. improves the environmental suitability of equipment, realizes the integrated of visual light imaging device, miniaturization, mould
Blockization designs.
In order to achieve the above objectives, the technical solution used in the present invention is：
A kind of small-sized integrated rigid flexible system imaging circuit, including imaging plate, digiboard, power panel and interface board；Into
As plate, digiboard, power panel and interface board are rigid hard circuit board, it is flexibly connected between imaging plate and digiboard, digiboard
It is flexibly connected between power panel, is flexibly connected between power panel and interface board.
Using the bending design of two-layer flexible S types, two layers of conductive copper centre is dielectric polyimide for the flexible connection
Class base material, outer layer presses two cover films or welding resistance, and stratum is coordinated to design.
The imaging plate includes ccd image sensor and driving and biasing circuit, and driving is schemed with biasing circuit to CCD
Bias voltage and driver' s timing as necessary to sensor provides its normal work make the sensitivity member on ccd image sensor defeated
The analog electrical signal gone out normally can be exported and be ultimately imaged.
The ccd image sensor is 5,000,000 pixels, and pixel dimension is 4.8um × 4.8um；The imaging plate
Temperature collecting module selects DS18B20 chips.
The digiboard includes FPGA, power supply circuit, reference voltage circuit, storage circuit and peripheral circuit；FPGA pairs
Data image signal carries out image procossing, is adjusted including image enhancement, brightness regulation, time for exposure and image parameter calculates, supplied
Circuit provides each road operating voltage for FPGA, and reference voltage circuit provides reference voltage for device chip on digiboard, storage
Circuit is used for storage running program and parameter, and peripheral circuit is the Peripheral clock and configuration circuit of FPGA.
The main control chip of the digiboard selects altera corp's Cyclone Series FPGAs -- and 5CEBA4U15 stores core
Piece selects the DDR2SDRAM--MT47H64M16HR-25E of Micron companies, and FLASH storage chips select ST companies
M25P16-VMN3TP。
The power panel is DC/DC translation circuits, and effect is that 12V DC power supply is converted into imaging plate and digiboard
High quality power supply needed for internal each section circuit, including 1.0V, 1.8V and 3.3V.
The chip that the power panel uses for LTC3624IDD, LTC1963ES8-1.8, LTC3612IDD,
LTC1763ES。
The interface board sends out digital picture according to the Cameralink of Medium forms, completes to accordingly sending core
The driving of piece further includes RS422 serial communication circuits.
The Camerlink picture signals driving chip is DS90CR285MT, and RS422 serial port chips are
MAX3071ESE, external connector J30J-31TJL.
Having the beneficial effect that acquired by the present invention：
According to the working characteristics of ccd image sensor and small-sized integrated mentality of designing, body construction size, peace are being taken into account
Under the requirement of dress mode, cancel mutual contact mode between the plate of original connector and cable, ensure the anti-interference of signal acquisition transmission
And reliability, the bending lamination of imaging electronics board compact and reasonable is installed, improves the integrated level of imaging device, realizes integration
While design, light and small is achieved the effect that.
(1) it can control electric parameter.Compared with cable conductor, flexible connection mode can control line width, line by design
Away from, parameters such as line thickness, dielectric thickness, dielectric constant, so as to reach the characteristics such as controlling feature impedance, delay and attenuation.It enhances
The reliability of signal transmission between imaging electronics board improves the picture quality and antijamming capability of digital video.
(2) flexible connection of visible light imaging circuit is realized, bent, solid wiring reduces circuit space, has
Excellent electric characteristic, it is seen that photoimaging equipment realizes densification, miniaturization, integration.
Description of the drawings
Fig. 1 is small-sized integrated rigid flexible system imaging circuit block diagram；
Fig. 2 is imaging plate layout；
Fig. 3 is digiboard layout；
Fig. 4 is power panel layout；
Fig. 5 is interface board layout.
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1, small-sized integrated rigid flexible system imaging circuit of the present invention includes imaging plate, digiboard, electricity
Source plate, interface board；Imaging plate, digiboard, power panel and interface board are rigid hard circuit board, between imaging plate and digiboard
Flexible connection, is flexibly connected between digiboard and power panel, is flexibly connected between power panel and interface board.The flexible connection is equal
It being designed using two-layer flexible, is dielectric polyimide class base material among two layers of conductive copper, outer layer presses two cover films or welding resistance,
And stratum is coordinated to design, power supply noise and crosstalk are effectively reduced, good ground reference planes are provided for circuit system.
As shown in Fig. 2, the core devices of imaging plate be ccd image sensor and ccd image sensor driving with partially
Circuits.Bias voltage and driver' s timing necessary to driving provides its normal work with biasing circuit to ccd image sensor,
So as to which the analog electrical signal for enabling the sensitivity member output on ccd image sensor is normally exported and is ultimately imaged, it is CCD figures
As sensor and the bridge of electrical signal processing component, as the most prime of entire circuit part, directly sensed with ccd image
Device connects, and the quality of performance directly determines the overall performance index of system, while also determine the safety that sensor uses
Property.Imaging plate core devices are ccd image sensors, positioned at circuit board center, 5,000,000 pixels (2048 × 2592), as
Elemental size 4.8um × 4.8um, temperature collecting module select chip be DS18B20, to complete the measurement of real time temperature and
The peripheral driver power supply chip of ccd image sensor.
As shown in figure 3, the core devices of digiboard are FPGA, further include the power supply circuit of FPGA, reference voltage circuit,
DDR2 and FLASH storage circuits and peripheral circuit.Power supply circuit provides each road operating voltage for FPGA, and reference voltage circuit is number
Device chip provides reference voltage on letter stencil, and storage circuit is used for storage running program and parameter, and peripheral circuit is the outer of FPGA
Enclose clock and configuration circuit.Digiboard main control chip selects altera corp's Cyclone Series FPGAs -- 5CEBA4U15.Storage
Chip selects the DDR2SDRAM--MT47H64M16HR-25E of Micron companies.FLASH storage chips select ST companies
M25P16-VMN3TP。
As shown in figure 4, power panel is mainly DC/DC translation circuits, effect is that the 12V DC power supply that will totally provide turns
High quality power supply of the imaging plate needed for each section circuit inside digiboard is changed into, including 1.0V, 1.8V and 3.3V.1.0V it is
The core operational voltage of FPGA, 1.8V and 3.3.V are that FPGA and remaining functional circuit provide power supply, and power panel is with the envelope of LT companies
It fills based on chip compact in size, it is higher including the equal energy conversion efficiency of DC/DC, LDO, it is stable and reliable in work, occupy circuit
Plate suqare is small.The chip of use has LTC3624IDD, LTC1963ES8-1.8, LTC3612IDD, LTC1763ES.
As shown in figure 5, interface board mainly sends out digital picture according to the Cameralink of Medium forms, completion pair
The corresponding driving of transmission chip and RS422 serial communication circuits.Camerlink picture signal driving chips are
DS90CR285MT, RS422 serial port chip are MAX3071ESE, external connector J30J-31TJL.
Since visual light imaging device has many input/output interfaces, when complete machine assembles, circuit board arrangement not only only takes up
One face needs to carry out the organic interconnection of lamination bending, ensures the flow direction of data and the stability of signal.Flexible PCB can be
Two-dimensional design, so as to carry out three-dimensional installation.Flexible connection between four pieces of circuit boards, is bent using S types, and planar design becomes
Three-dimensional stack-design effectively reduces installation dimension and space.
Ccd image sensor receives the target optical signal of external optical system acquisition, the sensitivity on ccd image sensor
Optical signal is turned detectable electric signal, the voltage signal that ccd image sensor exports is amplified and level magnitudes tune by member
Reason under the clock signal control of FPGA, according to the form of standard, gives the electric signal transmission to FPGA processing units, then right
Data image signal carries out a series of image procossing, and image enhancement, brightness regulation, time for exposure are adjusted, and image parameter calculates,
Data image signal after the completion of processing is exported, while can pass through by image-driven chip in the form of Cameralink
RS422 serial line interfaces complete circuit system and carry out parameter regulation and control.
Claims (10)
1. a kind of small-sized integrated rigid flexible system imaging circuit, it is characterised in that：Including imaging plate, digiboard, power panel and
Interface board；Imaging plate, digiboard, power panel and interface board are rigid hard circuit board, flexible between imaging plate and digiboard to connect
It connects, is flexibly connected between digiboard and power panel, is flexibly connected between power panel and interface board.
2. small-sized integrated rigid flexible system imaging circuit according to claim 1, it is characterised in that：The flexibility is even
It connects using the bending design of two-layer flexible S types, two layers of conductive copper centre is dielectric polyimide class base material, and outer layer presses two and covers
Epiphragma or welding resistance, and stratum is coordinated to design.
3. small-sized integrated rigid flexible system imaging circuit according to claim 1, it is characterised in that：The imaging plate
Including ccd image sensor and driving and biasing circuit, driving provides its normal work with biasing circuit to ccd image sensor
Bias voltage necessary to work and driver' s timing enable the analog electrical signal that the sensitivity member on ccd image sensor exports just
Often export and be ultimately imaged.
4. small-sized integrated rigid flexible system imaging circuit according to claim 3, it is characterised in that：The CCD figures
Picture sensor is 5,000,000 pixels, and pixel dimension is 4.8um × 4.8um；The temperature collecting module of the imaging plate is selected
DS18B20 chips.
5. small-sized integrated rigid flexible system imaging circuit according to claim 1, it is characterised in that：The digiboard
Including FPGA, power supply circuit, reference voltage circuit, storage circuit and peripheral circuit；FPGA carries out image to data image signal
Processing adjusts including image enhancement, brightness regulation, time for exposure and image parameter calculates, and power supply circuit provides each road for FPGA
Operating voltage, reference voltage circuit provide reference voltage for device chip on digiboard, and storage circuit is used for storage running program
With parameter, peripheral circuit is the Peripheral clock and configuration circuit of FPGA.
6. small-sized integrated rigid flexible system imaging circuit according to claim 5, it is characterised in that：The digiboard
Main control chip select altera corp Cyclone Series FPGAs -- 5CEBA4U15, storage chip select Micron companies
DDR2SDRAM--MT47H64M16HR-25E, FLASH storage chip select the M25P16-VMN3TP of ST companies.
7. small-sized integrated rigid flexible system imaging circuit according to claim 1, it is characterised in that：The power panel
For DC/DC translation circuits, effect is that 12V DC power supply is converted into inside imaging plate and digiboard needed for each section circuit
High quality power supply, including 1.0V, 1.8V and 3.3V.
8. small-sized integrated rigid flexible system imaging circuit according to claim 7, it is characterised in that：The power panel
The chip used is LTC3624IDD, LTC1963ES8-1.8, LTC3612IDD, LTC1763ES.
9. small-sized integrated rigid flexible system imaging circuit according to claim 1, it is characterised in that：The interface board
Digital picture according to the Cameralink of Medium forms is sent out, the driving to corresponding transmission chip is completed, further includes RS422
Serial communication circuit.
10. small-sized integrated rigid flexible system imaging circuit according to claim 9, it is characterised in that：Described
Camerlink picture signals driving chip is DS90CR285MT, and RS422 serial port chips are MAX3071ESE, and external connector is
J30J-31TJL。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711318025.6A CN108174061A (en) | 2017-12-12 | 2017-12-12 | A kind of small-sized integrated rigid flexible system imaging circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711318025.6A CN108174061A (en) | 2017-12-12 | 2017-12-12 | A kind of small-sized integrated rigid flexible system imaging circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108174061A true CN108174061A (en) | 2018-06-15 |
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ID=62525019
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711318025.6A Pending CN108174061A (en) | 2017-12-12 | 2017-12-12 | A kind of small-sized integrated rigid flexible system imaging circuit |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905618A (en) * | 2019-03-26 | 2019-06-18 | 中国科学院长春光学精密机械与物理研究所 | The design method of sandwich imaging unit structure and the positive sample of a step |
| CN110475428A (en) * | 2019-08-15 | 2019-11-19 | 深圳市华宇精琢科技有限公司 | A kind of display screen transmits pcb board without cable power supply and signal |
| CN113660403A (en) * | 2021-08-23 | 2021-11-16 | 长春理工大学 | Satellite-borne ultra-miniature monitoring camera |
| CN116017122A (en) * | 2023-03-22 | 2023-04-25 | 中国科学院长春光学精密机械与物理研究所 | Imaging movement circuit of low-light digital sighting telescope and sighting telescope |
| CN117022659A (en) * | 2023-10-09 | 2023-11-10 | 长春通视光电技术股份有限公司 | Rigid-flexible combination plate applied to photoelectric pod |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109905618A (en) * | 2019-03-26 | 2019-06-18 | 中国科学院长春光学精密机械与物理研究所 | The design method of sandwich imaging unit structure and the positive sample of a step |
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| CN113660403A (en) * | 2021-08-23 | 2021-11-16 | 长春理工大学 | Satellite-borne ultra-miniature monitoring camera |
| CN116017122A (en) * | 2023-03-22 | 2023-04-25 | 中国科学院长春光学精密机械与物理研究所 | Imaging movement circuit of low-light digital sighting telescope and sighting telescope |
| CN117022659A (en) * | 2023-10-09 | 2023-11-10 | 长春通视光电技术股份有限公司 | Rigid-flexible combination plate applied to photoelectric pod |
| CN117022659B (en) * | 2023-10-09 | 2024-03-08 | 长春通视光电技术股份有限公司 | Rigid-flexible combination plate applied to photoelectric pod |
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Application publication date: 20180615 |
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| RJ01 | Rejection of invention patent application after publication |