CN104580919B - A kind of image detection device - Google Patents
A kind of image detection device Download PDFInfo
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Abstract
The present invention discloses a kind of image detection device comprising opens short-circuit detecting module, parallel port transmission board, Image-capturing platform, current detection module.This is opened short-circuit detecting module and opens short circuit for detecting in the state of being not powered on the chip pin of the camera for the camera of the Image-capturing platform that connects, this is opened short-circuit detecting module and is connected with the fpga chip one in parallel port transmission board, be acquired and analyze by the AD data of one split short circuit of fpga chip, at the same fpga chip one control when opening short-circuit detecting camera with the mainboard of Image-capturing platform ground be isolated and short circuit.The current detection module is respectively cooperating with the optional switch chip of four independences built in four using four Current Voltage detection chips and realizes that four tunnels are independently-powered, and four road power supply circuits of the current detection module are directed to the measurement that four-way power supply AF, AVDD, DOVDD, DVDD that the camera of the Image-capturing platform needs do four ranges respectively.
Description
Technical field
Technical field of image detection more particularly to a kind of image detection device of the present invention and product.
Background technology
Applied to mobile phone, vehicle-mounted, safety-security area camera product image detection device, for the camera product of insertion
In the state of being not powered on, the short circuit of opening of detection chip pin is needed, is avoided that under product short-circuit conditions and powers in this way, to product
It is damaged with mainboard, while can also intercept such bad products.The design of the power supply circuit of image detection device is also outstanding
To be important, the four-way power supply precision that the camera (such as camera product) of general pattern acquisition platform needs is not high.How to design
A higher image detection device of camera power supply precision, becomes a great problem and difficult point of this field R ＆ D design personnel.
Invention content
For overcome the deficiencies in the prior art, the present invention provides a kind of image detection device, for the camera being inserted into
Product detection chip pin in the state of being not powered on opens short circuit, avoids powering under product short-circuit conditions, to product and mainboard
It damages, while can also intercept such bad products, while possessing 4 ranges of high-precision, four tunnels of the product that can focus camera shooting are only
Vertical power supply.
The technical solution adopted by the present invention to solve the technical problems is：A kind of image detection device comprising open short circuit
Detection module, parallel port transmission board, Image-capturing platform, current detection module；This open short-circuit detecting module for for connect
The camera of the Image-capturing platform detect in the state of being not powered on the chip pin of the camera and open short circuit, this opens short
The fpga chip one that road detection module and the parallel port are transmitted in board is connected, by the AD data of one split short circuit of fpga chip into
Row acquire simultaneously analyze, while fpga chip one control when opening short-circuit detecting camera with the mainboard of the Image-capturing platform
Isolation and short circuit；The current detection module is respectively cooperating with built in four that four independences can using four Current Voltage detection chips
Switch chip is selected to realize that four tunnels are independently-powered, four road power supply circuits of the current detection module are directed to the Image Acquisition and put down respectively
Four-way power supply AF, AVDD, DOVDD, DVDD that the camera of platform needs do the measurement of four ranges；This opens the use of short-circuit detecting module
2 optional switch chip combination Design of A/D Converter；2 optional switch chips are ADG706 chips：U6、U7；Analog-to-digital conversion
Device is AD7477AAKSZ-500RL7 chips：U5；The electrical connection of U5, U6, U7 are as shown in the table：
| Network label | U6 | U7 | U5 |
| VCC | 1 | 1 | 1 |
| AFS | 4 | 25 | - |
| DVDDS | 5 | 24 | - |
| DOVDDS | 6 | 23 | - |
| AVDDS | 7 | 22 | - |
| VPPS | 8 | 21 | - |
| GND | 12,27 | 12,27,28 | 2 |
| B3 | 14 | - | - |
| B2 | 15 | - | - |
| B1 | 16 | - | - |
| B0 | 17 | - | - |
| OS_EN | 18 | 18 | - |
| SGND | 19 | 10 | - |
| S_MCLK1 | 20 | 9 | - |
| S_MCLK2 | 21 | 8 | - |
| S_RST | 22 | 7 | - |
| S_PWDN | 23 | 6 | - |
| S_SCL | 24 | 5 | - |
| S_SDA | 25 | 4 | - |
| TEST | 28 | - | 3 |
| AD_CS# | - | - | 6 |
| AD_D | - | - | 5 |
| AD_CLK | - | 14 | 4 |
| A3 | - | 15 | - |
| A2 | - | 16 | - |
| A1 | - | 17 | - |
| A0 | - | 18 | - |
In U5, pin 3 is via resistance R90 electrical grounds；In U6, pin 1 is electric respectively via capacitance C40, capacitance C41
Property ground connection, pin 28 meets power supply VCC via resistance R9；In U7, pin 1 distinguishes electrical ground via capacitance C38, capacitance C39
As being further improved for said program, IN220A chips are respectively adopted in four Current Voltage detection chips：U20、U22、U24、
U27；The optional switch ADG811-YRU chips of built-in four independences are respectively adopted in four optional switch chips of independence built in four：
U21、U23、U25、U26。
Preferably, such as following table institute of the electrical connection between four IN220A chips and four ADG811-YRU chips
Show：
Further, in U20, pin 6 is via capacitance C164 electrical grounds, and pin 9 is via resistance R43 connection power supplys
DVDD1, pin 10 is via resistance R33 connection power supply DVDD, and pin 10 is also via capacitance C161 connections pin 9；In U22,
Pin 6 is via capacitance C165 electrical grounds, and pin 9 is via resistance R44 connection power supply DODD1, and pin 10 is via resistance R38 connections
Power supply DODD, and pin 10 is also via capacitance C162 connections pin 9；In U24, pin 6 draws via capacitance C171 electrical grounds
Foot 9 is via resistance R55 connection power supply AVDD1, and pin 10 is via resistance R47 connection power supply AVDD, and pin 10 is also via capacitance
C168 connections pin 9；In U27, pin 6 via capacitance C172 electrical grounds, pin 9 via resistance R56 connection power supply AF1,
Pin 10 is via resistance R48 connection power supply AF, and pin 10 is also via capacitance C167 connections pin 9；In U21, pin 2 via
Resistance R35 connection power supply DVDD1, pin 7 connect power supply via resistance R37 connection power supply DVDD1, pin 10 via resistance 34
DVDD1, pin 13 connect power supply V33 and via capacitance C164 electrical grounds, and pin 15 is via resistance R36 connection power supplys DVDD1；
In U23, pin 2 is passed through via resistance R42 connection power supply DODD1, pin 7 via resistance R39 connection power supply DODD1, pin 10
Power supply DODD1 is connected by resistance 40, pin 13 connects power supply V33 and via capacitance C166 electrical grounds, and pin 15 is via resistance
R41 connection power supplys DODD1；In U25, pin 2 is via resistance R51 connection power supply AVDD1, and pin 7 is via resistance R49 connection electricity
Source AVDD1, pin 10 connect power supply AVDD1 via resistance 50, and pin 13 connects power supply V33 and is electrically connected with via capacitance C169
Ground, pin 15 is via resistance R45 connection power supplys AVDD1；In U26, pin 2 is passed through via resistance R54 connection power supply AF1, pin 7
By resistance R53 connection power supply AF1, pin 10 connects power supply AF1 via resistance 52, and pin 13 connects power supply V33 and via capacitance
C170 electrical grounds, pin 15 is via resistance R46 connection power supplys AF1.
The image detection device of the present invention has the short-circuit OPEN SHAORT detection functions of opening for camera product, and
Hot drawing plugging function is added by software optimization, four-way power supply (AF power supplies, AVDD, DOVDD, DVDD) automatically powers off when plug product
Upper Electricity Functional；Meanwhile four road power supply circuits of current detection module are directed to the phase of Image-capturing platform (Part IV) respectively
Four-way power supply AF, AVDD, DOVDD, DVDD that machine (such as camera product) needs do the measurements of four ranges, precision up to 1uA,
Therefore possess the four tunnels power supply standalone feature for the product camera shooting that can focus of 4 ranges of high-precision.
Description of the drawings
Fig. 1 is the modular structure schematic diagram of the image detection device of the present invention.
Fig. 2 is the electrical connection schematic diagram of fpga chip one in Fig. 1.
Fig. 3 is the electrical connection schematic diagram of MC20901 chips one in Fig. 1.
Fig. 4 is the electrical connection schematic diagram of MC20901 chips two in Fig. 1.
Fig. 5 is the current detection module structural schematic diagram of image detection device of the present invention.
Fig. 6 is that the electrical connection of four Current Voltage detection chip IC IN220A of current detection module in Fig. 5 shows
It is intended to.
Fig. 7 is the electricity of the optional switch chip IC ADG811-YRU of four independences built in four of current detection module in Fig. 5
Property connection relationship diagram.
Fig. 8 is the electrical connection signal of the critical piece for opening short-circuit detecting module of image detection device of the present invention
Figure.
Fig. 9 is the modular structure schematic diagram of the Image-capturing platform of image detection device of the present invention.
Figure 10 is the software architecture schematic diagram that image detection device of the present invention uses.
Figure 11 is the data statistics flow signal for the data statistics data digging method that image detection device of the present invention uses
Figure.
Figure 12 is the data digging flow signal for the data statistics data digging method that image detection device of the present invention uses
Figure.
Figure 13 is the stereoscopic schematic diagram of the board shell of image detection device of the present invention.
Specific implementation mode
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
The 8lane MIPI decoding USB3.0 image detection devices of embedding data statistical Data Mining are a kind of applied to hand
Machine, vehicle-mounted, safety-security area camera product image detection device, are mainly made of following six part.Each section is set
All there is respective characteristic in meter scheme, while can also respectively form independent product, and maintenance is safeguarded, using being all very convenient.
1) first part supports 1lane mipi, 2lane based on xilinx Spartan FPGA exploitation designs
MIPI, 4lane MIPI, 8LANE MIPI (double 4LANE mipi synchronize) MIPI decode and synchronize into 8/16 and oral instructions
Input board card.
2) second part, four tunnels for the product camera shooting that can focus for possessing 4 ranges of high-precision are examined for electrically independent electric current
Survey module.
3) Part III opens short-circuit detecting module.Short-circuit OPEN SHAORT detection functions are opened for camera product,
And hot drawing plugging function is added by software optimization, four-way power supply (AF power supplies, AVDD, DOVDD, DVDD) is from dynamic circuit breaker when plug product
Electricity Functional on electricity.
4) Part IV, based on Cypress 3014 and xilinx Spartan FPGA exploitations, valid data transmission efficiency
Reach the USB3.0 Image-capturing platforms of 3.7Gbps.The platform be directed to picture frame before with postamble be embedded in frame before postamble synchronizing signal,
Host computer constantly detects the frame head and postamble of image data, avoids the processing of wrong frame, the wrong data processing of image data, and carries
For two-way, per road, a variety of Sensor reference frequencies provide, a variety of I2C communication patterns supplies of two-way, a variety of Sensor power supplys and control
Signal.
5) Part V, the software architecture based on QT/C++ for product testing type includes auto-focusing (AF), automatic
Focusing, the burning of the positions AF, automatic exposure (AE), the embedding datas statistical Data Mining function such as automatic white flat horizontal (AWB).For
MTF, SFR, dirty point hinder the scheduling algorithms such as point, stain (Blemish), ColorUniform, SNR, optical center detection based on different PC
Cpu instruction collection SSE4.1, SSE4.2, SSE2, SSE3 dynamics are optimized using instruction set.
6) Part VI, board shell, using fan-free heat dissipation technology, device case towards high-speed motion apparatus, for
It is designed using non-threaded outside USB3.0 interface hulls.
Referring to Fig. 1, transmission board in parallel port includes mainly fpga chip one (such as FPGAXC6SLX45), 2 MC20901 cores
Piece (such as MC20901TQLMP-48), camera (Camera) driving unit.It transmits board and uses xilinx in parallel port
Spartan6XC6SLX45FPGA exploitation designs, using I2C (Inter-Integrated Circuit, bus), by I2C,
Double camera parallel port, GPIO mouthfuls be connected with Image-capturing platform.Camera driving unit is assigned by the I2C and is instructed and by this
The MIPI signals of the GPIO mouthfuls of cameras by the Image-capturing platform are passed to two MC20901 chips, and MC20901 chips are by signal
One receivable LVDS signals of fpga chip are converted into, fpga chip one possesses row by decoding IP kernel and being decoded into LVDS signals
The image data of synchronizing signal, then the image data Synchronous fluorimetry for the simultaneously image data of port transmission 16 or 8 and is passed through
Level conversion IC is exported to double parallel ports Camera and is transmitted to Image-capturing platform.The GPIO mouthfuls can be double 40 pins (PIN) insert rows.Figure
As acquisition platform realizes control using fpga chip two (xilinx Spartan6XC6SLX45FPGA exploitations design can also be used)
System.
It is the electrical connection schematic diagram of fpga chip one incorporated by reference to Fig. 2, Fig. 3 and Fig. 4, wherein Fig. 2；2 MC20901
Chip is MC20901 chips one and MC20901 chips two, and Fig. 3, Fig. 4 are respectively MC20901 chips one and MC20901 chips two
Electrical connection schematic diagram.The connection relation of fpga chip one and 2 MC20901 chips is as shown in table 1, table 2, table 3.
The pin and its network label of table 1FPGA chips one
The pin and its network label of table 2MC20901 chips one
The pin and its network label of table 3MC20901 chips two
In conclusion the electrical connection between fpga chip one and 2 MC20901 chips is as shown in table 4 below.
Transmit the electrical connection of board in 4 parallel port of table
In MC20901 chips one, pin 45 connects power Vcc one, is also connect via capacitance C85 ground connection, via capacitance C86
Ground；Pin 15 connects power Vcc one, is also grounded via capacitance C87 ground connection, via capacitance C88；32 power Vcc two of pin, also passes through
It is grounded by capacitance C67 ground connection, via capacitance C68.
In MC20901 chips two, pin 45 connects power Vcc one, is also connect via capacitance C62 ground connection, via capacitance C63
Ground；Pin 15 connects power Vcc one, is also grounded via capacitance C64 ground connection, via capacitance C65；32 power Vcc two of pin, also passes through
It is grounded by capacitance C60 ground connection, via capacitance C61.
Image detection device of the present invention, the parallel port transmission board used are based on xilinx Spartan FPGA exploitations and set
Meter can support 1lane mipi, 2lane MIPI, 4lane MIPI, 8LANE MIPI (double 4LANE mipi are synchronized) MIPI solutions
Code is simultaneously synchronous at 8/16.
Referring to Fig. 5, current detection module (for second part) is using four IN220A points of Current Voltage detection chip IC
Not Pei He the optional switch chip IC ADG811-YRU of four independences built in four realize that four tunnels are independently-powered.Current detection module
Four road power supply circuits be directed to respectively Image-capturing platform (Part IV) camera (such as camera product) need four tunnels
Power supply AF, AVDD, DOVDD, DVDD do the measurement of four ranges, and precision is up to 1uA.Current detection module uses four electric current electricity
Detection chip IC IN220A are pressed to realize that four tunnels are independently-powered.Four Current Voltage detection chip IC IN220A by I2C (such as
SDA and SCL) it is connected with the fpga chip two (i.e. xilinx Spartan6XC6SLX45FPGA) of Image-capturing platform.IC
IN220A refers to IN220A chips.Therefore current detection module possesses 4 ranges of high-precision, four tunnels of the product that can focus camera shooting independently supply
Electricity.
It is that four Current Voltage detection chip IC IN220A and four independences built in four are optional incorporated by reference to Fig. 6, Fig. 7
The electrical connection schematic diagram of switch chip IC ADG811-YRU, IC ADG811-YRU refer to ADG811-YRU chips.Four
Current Voltage detection chip IC IN220A are respectively U20, U22, U24, U27, the optional switch chip IC of four independences built in four
ADG811-YRU is respectively U21, U23, U25, U26, and the electrical connection between them is as shown in table 4.
The electrical connection of 4 current detection module of table
Wherein, according to popular understanding, V33 is expressed as the power supply of 33V, and GND is expressed as ground, and IN1~IN16 indicates defeated respectively
Enter to connect the corresponding output of fpga chip two for controlling U21, U23, U25, U26.
In U20, pin 6 is via capacitance C164 electrical grounds, and pin 9 is via resistance R43 connection power supply DVDD1, pin
10 via resistance R33 connection power supply DVDD, and pin 10 is also via capacitance C161 connections pin 9.
In U22, pin 6 is via capacitance C165 electrical grounds, and pin 9 is via resistance R44 connection power supply DODD1, pin
10 via resistance R38 connection power supply DODD, and pin 10 is also via capacitance C162 connections pin 9.
In U24, pin 6 is via capacitance C171 electrical grounds, and pin 9 is via resistance R55 connection power supply AVDD1, pin
10 via resistance R47 connection power supply AVDD, and pin 10 is also via capacitance C168 connections pin 9.
In U27, pin 6 is via capacitance C172 electrical grounds, and pin 9 is via resistance R56 connection power supply AF1, pin 10
Via resistance R48 connection power supply AF, and pin 10 is also via capacitance C167 connections pin 9.
In U21, pin 2 via resistance R35 connection power supply DVDD1, pin 7 via resistance R37 connection power supply DVDD1,
Pin 10 connects power supply DVDD1 via resistance 34, and pin 13 connects power supply V33 and via capacitance C164 electrical grounds, pin 15
Via resistance R36 connection power supplys DVDD1.
In U23, pin 2 via resistance R42 connection power supply DODD1, pin 7 via resistance R39 connection power supply DODD1,
Pin 10 connects power supply DODD1 via resistance 40, and pin 13 connects power supply V33 and via capacitance C166 electrical grounds, pin 15
Via resistance R41 connection power supplys DODD1.
In U25, pin 2 via resistance R51 connection power supply AVDD1, pin 7 via resistance R49 connection power supply AVDD1,
Pin 10 connects power supply AVDD1 via resistance 50, and pin 13 connects power supply V33 and via capacitance C169 electrical grounds, pin 15
Via resistance R45 connection power supplys AVDD1.
In U26, pin 2 is via resistance R54 connection power supply AF1, and pin 7 is via resistance R53 connection power supply AF1, pin
10 connect power supply AF1 via resistance 52, and pin 13 connects power supply V33 and via capacitance C170 electrical grounds, and pin 15 is via electricity
Hinder R46 connection power supplys AF1.
Core is detected in the state of being not powered on referring to Fig. 8, opening short-circuit detecting module and can be directed to the camera product being inserted into
Piece pin opens short circuit, avoids powering under product short-circuit conditions, be damaged to product and mainboard, at the same can also intercept it is such not
Good product.It opens short-circuit detecting module with the fpga chip one in parallel port transmission board to be connected, passes through one split short circuit of fpga chip
AD data be acquired and analyze, while the control of fpga chip one is isolated with mainboard ground to camera when opening short-circuit detecting
With the disconnection and connection of the Signal Products and receiving terminal such as short circuit and PWDN, RESET, I2C.
It opens short-circuit detecting module and combines analog-digital converter using 2 optional switch chips (ADG706 chips)
(AD7477AAKSZ-500RL7 chips) design is realized.2 ADG706 chips are U6, U7, AD7477AAKSZ-500RL7 chips
For U5, the connection relation between them is as shown in table 5.
Table 5 opens the electrical connection of short-circuit detecting module
Wherein, in U5, pin 3 is via resistance R90 electrical grounds.
In U6, pin 1 distinguishes electrical ground via capacitance C40, capacitance C41, and pin 28 connects power supply via resistance R9
VCC。
In U7, pin 1 distinguishes electrical ground via capacitance C38, capacitance C39.
Referring to Fig. 9, Image-capturing platform as entire platform PC and parallel port transmission board, current detection module and
The maincenter plate for opening the data transmission of short-circuit detecting module not only provides voltage module (its of the different cameras of polymorphic type
Middle AVDD supports 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 0V；DOVDD supports 3.3V, 2.8V, 2.5V, 1.8V, 1.5V, 0V；
DVDD provides 3.3V, 2.8V, 1.8V, 1.5V, 1.2V, 0V) and support per road independence power down function, provide duplexing multiple types
I2C communication patterns (8 bit address, 8 place value, 8 bit address, 16 place value, 16 bit address, 8 place value, 16 bit address, 16 place value, 16 ground
32 place value of location, 32 address, 32 place value etc.)；Provide multi-frequency camera product supply when kind (6.25M, 12.5M, 25M,
50M)；Support the software exchange of PWDN and RESET.The major function of the Image-capturing platform will control signal and picture signal with
The interaction of PC main programs.
Referring to Fig. 10, software architecture is to establish on the basis of PC, transmits board with parallel port, current detection module, opens
The primary control program that short-circuit detecting module, Image-capturing platform interact, is connected by the line of USB3.0 with Part IV.PC is responsible for connecing
Processing image data is received, characteristics of image is extracted, judges the work such as properties of product；Possess preferable human-computer interaction interface simultaneously, controls
The sequential of making sheet card and product, the transmission of control parallel port board, current detection module, to open short-circuit detecting module, Image Acquisition flat
The work etc. of platform (being respectively first part, second part, Part III, Part IV), and it is embedded in Database Unit, it gathers around
Have to the characteristic extraction of historical product, analysis, data mining duty.
The data statistics data digging method that software architecture uses is as shown in FIG. 11 and 12.First：Conventional 6 steps are completed certainly
Dynamic exposure (AE).1 is please referred to Fig.1, database is set, if dryed product is written in database ((refers to the image detection dress of the present invention
Set)) data, such as record 1000 product data.What the data of each product were such to：1, A products are tested；2, extraction A productions
Initial luminance data of the product under light source；3, control A products do automatic exposure (as completed automatic exposure using conventional 6 steps), reach
To object brightness, product register when extracting the target of A products, that is to say, that the register of extraction A products product at this time；4, will
Initial luminance data and AE complete product register information data-in library when object brightness.
Later, in follow-up test product, 2 are please referred to Fig.1, such as product B to be measured, you can 2 steps complete AE, obtain product B
Current light source initial luminance data searches for database, does Data Matching, data mining processing, is believed according to the original intensity of product B
Breath finds the product register to match in the database, by this product register (the product register of product in database)
Product B to be measured is written, then finely tunes AE.AE actions can be completed in two steps in this way：Database is formed by data statistics, then in data
Data mining in library.
The data statistics data digging method can be designed to that following data statistics data are dug in Software Module Design
Dig device：The data statistics data mining device includes data statistics module and data-mining module.
Data statistics module is used to form database by data statistics comprising initial luminance data acquiring unit one,
Product register acquiring unit two, recording unit.Initial luminance data acquiring unit one is for extracting test product under light source
Initial luminance data；Product register acquiring unit two does automatic exposure (as used conventional 6 steps complete for controlling test product
At automatic exposure), reach object brightness, product register when extracting the target of test product, that is to say, that extraction test product
The register of product at this time；Recording unit is used to complete initial luminance data and AE product register information when object brightness
Data-in library.At least 1000 test products are counted repeatedly.
Data-mining module goes out the product register that product to be measured needs for data mining in the database comprising
Initial luminance data acquiring unit two, search unit, product register acquiring unit two, writing unit, fine-adjusting unit.It is initial bright
Degree information acquisition unit two is used to obtain the current light source initial luminance data of product to be measured；Search unit is for searching for data
Library, does Data Matching, data mining processing, and product register acquiring unit two is used for the initial luminance data according to product to be measured
The product register to match is found in the database；Writing unit is used for this product register (product in database
Product register) write-in product to be measured, fine-adjusting unit, which is used to start product to be measured according to the product register of write-in, finely tunes AE.
The data statistics data digging method that software architecture uses, when the test product in early period, according to original intensity
Information is established after the database of product register, and just the test of convenient follow-up trial product to be measured, improves testing efficiency.
Board shell using aluminum alloy casing, belongs to mechanism design as shown in figure 13, is especially set for the whole board of protection
Meter.Shell includes the upper casing 18 being fastened togather up and down and lower casing 17.Transmit the calorific value of board and Image-capturing platform in parallel port
Higher fpga chip is directly connected with shell by radiating silica gel sheet, and USB3.0 lines are to avoid and equipment height with board interface
Shaking is generated when movement, transmitting board with parallel port by an accessory 15 is connected, and accessory 15 is for fixing USB3.0 lines and and oral instructions
The interface section of input board card.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement etc., should all be included in the protection scope of the present invention made by within refreshing and principle.
Claims (4)
1. a kind of image detection device comprising open short-circuit detecting module, parallel port transmission board, Image-capturing platform, electric current inspection
Survey module；It is characterized in that：This opens short-circuit detecting module for not leading to for the camera of the Image-capturing platform that connects
That the chip pin of the camera is detected in the state of electricity opens short circuit, this is opened in short-circuit detecting module and parallel port transmission board
Fpga chip one is connected, and is acquired and analyzes by the AD data of one split short circuit of fpga chip, while fpga chip one is controlled
System when opening short-circuit detecting camera with the mainboard of Image-capturing platform ground be isolated and short circuit；The current detection module is adopted
It is respectively cooperating with the optional switch chip of four independences built in four with four Current Voltage detection chips and realizes that four tunnels are independently-powered, it should
Four road power supply circuits of current detection module be directed to respectively the Image-capturing platform camera need four-way power supply AF,
AVDD, DOVDD, DVDD do the measurement of four ranges；This is opened short-circuit detecting module and is turned using 2 optional switch chip combination moduluses
Exchanger design；2 optional switch chips are ADG706 chips：U6、U7；Analog-digital converter is AD7477AAKSZ-500RL7 cores
Piece：U5；Wherein, the electrical connection of the pin of U5, U6, U7 is as shown in the table：
In U5, pin 3 is via resistance R90 electrical grounds；In U6, pin 1 is electrically connected with respectively via capacitance C40, capacitance C41
Ground, pin 28 meet power supply VCC via resistance R9；In U7, pin 1 distinguishes electrical ground via capacitance C38, capacitance C39.
2. image detection device according to claim 1, it is characterised in that：Four Current Voltage detection chips are respectively adopted
IN220A chips：U20、U22、U24、U27；Built-in four independences are respectively adopted in four optional switch chips of independence built in four can
Select switch ADG811-YRU chips：U21、U23、U25、U26.
3. image detection device according to claim 2, it is characterised in that：Four IN220A chips and four ADG811-
The electrical connection of pin between YRU chips is as shown in the table：
4. image detection device according to claim 3, it is characterised in that：In U20, pin 6 is via capacitance C164 electricity
Property ground connection, pin 9 via resistance R43 connection power supply DVDD1, pin 10 via resistance R33 connection power supply DVDD, and pin 10 and also
Via capacitance C161 connections pin 9；In U22, pin 6 is via capacitance C165 electrical grounds, and pin 9 is via resistance R44 connections
Power supply DODD1, pin 10 is via resistance R38 connection power supply DODD, and pin 10 is also via capacitance C162 connections pin 9；In U24
In, pin 6 is via capacitance C171 electrical grounds, and pin 9 is via resistance R55 connection power supply AVDD1, and pin 10 is via resistance R47
Power supply AVDD is connected, and pin 10 is also via capacitance C168 connections pin 9；In U27, pin 6 is electrically connected with via capacitance C172
Ground, pin 9 is via resistance R56 connection power supply AF1, and pin 10 is via resistance R48 connection power supply AF, and pin 10 is also via capacitance
C167 connections pin 9；In U21, pin 2 is via resistance R35 connection power supply DVDD1, and pin 7 is via resistance R37 connection power supplys
DVDD1, pin 10 connect power supply DVDD1 via resistance 34, and pin 13 connects power supply V33 and via capacitance C164 electrical grounds,
Pin 15 is via resistance R36 connection power supplys DVDD1；In U23, pin 2 is passed through via resistance R42 connection power supply DODD1, pin 7
By resistance R39 connection power supply DODD1, pin 10 connects power supply DODD1 via resistance 40, pin 13 connect power supply V33 and via
Capacitance C166 electrical grounds, pin 15 is via resistance R41 connection power supplys DODD1；In U25, pin 2 is via resistance R51 connections
Power supply AVDD1, pin 7 connect power supply AVDD1, pin 13 via resistance R49 connection power supply AVDD1, pin 10 via resistance 50
It connects power supply V33 and via capacitance C169 electrical grounds, pin 15 is via resistance R45 connection power supplys AVDD1；In U26, pin
2 connect power supply via resistance R53 connection power supply AF1, pin 10 via resistance R54 connection power supply AF1, pin 7 via resistance 52
AF1, pin 13 connect power supply V33 and via capacitance C170 electrical grounds, and pin 15 is via resistance R46 connection power supplys AF1.
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| CN105823956A (en) * | 2016-03-16 | 2016-08-03 | 昆山软龙格自动化技术有限公司 | IC open/short test system integrated in USB3.0 test card |
| CN107197238A (en) * | 2017-07-06 | 2017-09-22 | 杭州柴滕自动化科技有限公司 | One kind takes the photograph IMAQ test device based on FPGA pairs |
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| JP2007202067A (en) * | 2006-01-30 | 2007-08-09 | Fujifilm Corp | Solid-state imaging apparatus and digital camera |
| CN202818516U (en) * | 2011-12-09 | 2013-03-20 | 信利光电(汕尾)有限公司 | Camera module image function detection apparatus and system possessing the apparatus |
| CN103455132A (en) * | 2013-08-20 | 2013-12-18 | 西安电子科技大学 | Embedded system power consumption estimation method based on hardware performance counter |
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