ISUAL Sprite Imager Electronic Design Stewart Harris NCKU
- Slides: 31
ISUAL Sprite Imager Electronic Design Stewart Harris NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris
Outline • Imager Circuit and Electronics Design • Electronics Design and Fabrication Status NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 2
Imager Electronics Locations MCP HV Supply Front End Electronics (FEC) Phosphor HV Supply Filter Wheel Motor Filter Wheel Position Sensor NCKU UCB Tohoku CDR 9 Jul 2001 Daylight Sensor Electrical Board Sprite Imager S. Harris 3
Imager Electrical Block Diagram MCP HVPS Intensifier CCD Front End Electronics J 2 J 4 Phosphor HVPS J 3 TEC Stim LED Day-Light Sensor Photocathode Power Supply Filter Wheel Motor Driver Filter Wheel Position Sensor NCKU UCB Tohoku Imager Electrical Board J 1 CDR 9 Jul 2001 Sprite Imager Heater and Thermistor Circuits not shown S. Harris 4
Imager Connector Locator J 3 MCP High Voltage J 4 Phosphor High Voltage J 1 Imager Electrical Board NCKU UCB Tohoku CDR 9 Jul 2001 J 2 Front End Electronics Sprite Imager S. Harris 5
Image Intensifier Interface Image Intensifier - 25 mm J 4 - 9 pin J 3 - 9 pin MCP-Out -1 k. V HV Supply Phosphor (Anode -6 k. V) HV Supply MCP-In GND Photocathode Power Supply GATE FEC Connector Imager Electrical Board J 1 - 44 pin NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 6
Imager Electrical Board Functions • Connections – Thermistors • • • TEC hot side Lens (front and rear) Filter Wheel Filter Motor Daylight Sensor Survival (spacecraft) • Active Electronics – Photocathode Power Supply • On/off control • Gate control from FEC – Filter Wheel Motor Driver • Stepper motor (2 phases) • Position indicators (2 bits) – Heater Circuits • Lens (front and rear) • Filter Wheel • Survival (spacecraft) Interface Ref Doc: 8439 -A 4 F – Thermoelectric Cooler (TEC) • Power controlled from AEP – Stim Source NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 7
Motor Controller Schematic NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 8
Photocathode Power Supply NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 9
Daylight Sensor Electronics • Specifications – – – Purpose: Control HV Power Supplies On/Off Number of Channels: 2 Sensor: 2 x UDT PIN-44 DPI (per Channel) Spectral band: 420 - 780 nm Field of View: 2π Threshold current: 4 n. A (sum of 2 photodiodes) (1 E 6 photons/pixel/sec on Imager) – Range of detection: 0. 1 to 1000 n. A – Output: 0 to 5 V NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 10
Daylight Sensor Schematic One Channel Shown NCKU UCB Tohoku CDR 9 Jul 2001 Ref schematic: 8798 -O 9 A Sprite Imager S. Harris 11
Daylight Sensor Circuit Performance NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 12
Temperature Stability - Daylight Sensor Circuit NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 13
Front End Electronics Interface Images are transferred to the AEP in data frames, each frame is 128 lines x 512 pixels • Data[0. . 11] – 12 bits per pixel • Pixel. Clock (PIXCLK) – pixel data strobe • Frame. Valid (FRMV) – indicates duration of frame • Line. Valid (LINV) – indicates duration of line – used only during test • Busy (BUSY) – signals start of EXP • Acquire (ACQ) – enables modes • Event Trigger (ETRIG) – signals Spite Event • Command. Data (CDI) – serial data interface for upload of camera parameters • Voltage. Monitor (MON) – switched analog output • Power – dc voltages Interface Ref Doc: 8652 -X 7 A NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 14
Front End Electronics Block Diagram J 2 NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 15
CCD Bias Design NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 16
Clock Driver Design NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 17
Analog Data Chain Buffer Preamp/Clamp OS 1 Correlated Double Sampling (CDS) ADC RLOAD MUX CCD Buffer RS-422 Drivers Preamp/Clamp OS 2 Correlated Double Sampling (CDS) ADC RLOAD CCD Board Driver Board 8559 -O 9 8560 -O 9 NCKU UCB Tohoku CDR 9 Jul 2001 Analog Processor Board 8562 -O 9 Sprite Imager S. Harris 18
Preamp Design NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 19
CDS Design NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 20
Digital Control NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 21
Power Supply Design NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 22
Image Readout Order CCD array is illustrated showing the order in which pixels are transferred from Imager to AEP Line 1 2 127 128 1 513 509 1021 3 515 64513 64515 65027 511 1023 512 1024 510 4 516 1022 65021 65023 65024 65022 65533 65535 65536 65534 2 514 64516 64514 65028 65026 1. Each cell represents one pixel 2. Since the CCD is read from two outputs, the image is split in the middle NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 23
Data Transfer Timing Line Timing Tframe = 9. 6 ms Tline = 75 s Pixel Timing Tpixel = 125 ns N > 512 NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 24
Imager Electronics Design Status • Breadboard fabrication and testing complete • Detailed design Completed – FEC Electronics Design Completed – Imager Electrical Board Design Completed – Daylight Sensor Design Completed NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 25
FEC Breadboard A breadboard version of the FEC electronics was built to test the design of clock drivers, preamps, correlated double sample (CDS) circuitry and 12 -bit A/D conversion. NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 26
Breadboard Camera Measurements • Operating Parameters Master clock: 22. 5 MHz Pixel clock: 7. 5 MHz Line clock: 340 k. Hz • Measured system gain 29 e-/ADU • Measured readout noise < 50 e- rms • CCD full well ~ 120, 000 e- • Dynamic range > 2400: 1 NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 27
Breadboard Camera Image NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 28
ETU Imager Fabrication Status • Assembly of ETU Imager – FEC PC board fabrication status: • All boards assembled and tested – Imager Electrical board fabrication status: • Board etch is in process – Daylight Sensor board fabrication status: • Board is assembled and tested – Mechanical parts fabrication status: • Machining/fabrication is in process – Electrical / Electronic (EE) Parts status • see next page – Optics Parts status • see next page NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 29
EE Parts and Optics Status NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 30
The End NCKU UCB Tohoku CDR 9 Jul 2001 Sprite Imager S. Harris 31
- Harris & harris digital design and computer architecture
- Ncku
- Ncku ranking
- Ncku ee
- Zoe fluorescent cell imager
- Ftk properties
- Photosystems
- Lightning imager
- Oxygen forensic
- Is the electronic exchange of money or scrip
- Electronic news gathering and electronic field production
- Obey your thirst slogan
- Packing sprite atlases
- How to make snake on scratch
- Scratch control pico
- Jump over it game
- Scratch tank game
- Construct 2 platform game tutorial
- Sprite red bull
- Pygame.sprite.collide_rect
- What is a sprite
- Fungsi sound pada scratch
- How to make a ball game on scratch
- Sprite lfs
- Harry potter sprite for scratch
- Scratch witch sprite
- Sprite sword
- Severe pong game cards
- Scratch "direction of sprite" block
- Sprite acronym history
- Pregunta 6
- Interface scratch