Use Case #1-A Social Discovery With DASH7 Hillary 7 mutual friends Listening to “The Rushing Wind” by Enation DASH7 Can Broadcast to Hundreds of People At The Same Time ... (WiFi and Bluetooth Cannot)www.blackbird420.com
Many Other Use Cases!• Employee Tracking • Animal tracking • Oil & Gas Supply Chains• Hazardous Materials Tracking • Lumber supply chains • Construction Tools Tracking• Anti-theft tags • Pandemic support • Home Healthcare• IT asset tracking • Yard management • Patient/infant tracking• Contactless payments • Warehouse management • Bridge, Tunnel Stress Monitoring• Vehicle tracking • Digital signage • Many more ...
Maintaining Privacy With DASH7• Not too different from WiFi or BT• DASH7 can be “invisible”• Supports AES-128 in MAC• Supports other public/private key exchange in Network Layer• Independent of NFC security settings
DASH7 & Smartphones DASH7 uses the same antenna & (basically) the same silicon as NFC, apart from a single analog circuitNFC and DASH7 Today Next Gen NFC Chips NFC operates at 13.56 MHz worldwide DASH7 operates at the 32nd harmonic above 13.56 MHz DASH7 operates at 433.92 MHz worldwide (13.56 x 32 = 433.92) Non-integrated Solution: 3 chips + passives, 1 antenna ll r ly a d Integrated Solution: nea r, an 1 chip + passives, 1 antenna by rie loyed s car s s g dep irele ndor n w e bei set, sale v s nd Ci f NF or ha oint o j p ma No Additional Radio Required Blackbird Conﬁdential 14
NFC + DASH7 Combo Chip ConceptDASH7 can be added to an NFC chipset & solution with minimal additionsModern RF interface chipsets areprimarily digital.DASH7 uses GFSK modulation, 13.56 MHzwhich is similar to NFC modulation. NFC Capacitive Match- Digital blocks remain intactIn concept, adding DASH7 to NFC is accomplished byadding an Integer-N PLL and a small number of analogswitches.- Integer-N PLL for 13.56 MHz input with: Divider Ref = 128, Multiplier N = 4096 ± 7- Analog switches to tune antenna at 13.56 or 433 NFC + 13.56 MHz Cap- DASH7 uses much less output power than NFC DASH7 Match 433 MHz Cap433 MHz DASH7 spectrum is low enough and narrow Extensionenough that normal SiO2 fabrication is OK.
The Power Scale DASH7 is an aggressively low-power technologyBackground Upper limit for Running Running RF energy energy harvesting 3G Modem iMac Li-Thionyl Upper limit for Running Running self-discharge Multiyear battery GPS chip laptop BLE Bluetooth Bluetooth Slave Slave Master 802.15.4 802.15.4 802.15.4 802.11 Endpoint Coord. Gateway Device DASH7 DASH7 DASH7 Endpoint Subctrlr Gateway 0 - 1 µW 1 - 10 µW 10 - 100 µW 0.1 - 1 mW 1 - 10 mW 10 - 100 mW 0.1 - 1 W 1 - 10 W 10 - 100 W
The Power Scale Typical DASH7 apps have low-latency, ad-hoc requirements and 10-10000 uW power limits Target Range for “Always-On” HandsetTarget Range for Apps BluetoothRemote Devices BLE Bluetooth Slave (“Widgets”) Slave Master 802.15.4 802.15.4 802.15.4 802.11 Endpoint Coord. Gateway Device DASH7 DASH7 DASH7 Endpoint Subctrlr Gateway0 - 1 µW 1 - 10 µW 10 - 100 µW 0.1 - 1 mW 1 - 10 mW 10 - 100 mW 0.1 - 1 W 1 - 10 W 10 - 100 W
Typical Active-Mode Power Usage in DASH7 and NFCAdvanced chipsets and duty-cycling can reduce power in either case DASH7 NFC Powered-Master/ ~200 mW / 0 mW N/A Unpowered-Slave (~10 cm) Powered-Master/ ~30mW / ~30mW ~60 mW / ~60 mW Powered-Slave (~200m) (~2m) Data Rate 28 - 200 kbps 106 - 424 kbps (inverse packet length)
Duty Cycling Reduces Power, Increases LatencyDuty cycling is practical, though, because DASH7 has ad-hoc “wakeup” features RX/TX Power (3V, 0dBm) Examples Mature Silicon 45mW / 45mW TI CC430 State of the Art Silicon 9mW / 14mW Energy Micro Prototype Next-gen Research 1mW / 8 mW (contact Blackbird) At 100% Duty Cycle, power-usage is dependent on the chip technology Typ. Duty Cycle Worst-Case Latency Base Power (mature) Remote Sensor 0.05% 2s 30 µW “Always-on” Listen 5% 25 ms 2.25 mW Extreme-Heavy Use 20% 10 ms 9 mW At reduced duty cycles, latency is 5 ms + approximate inverse of the 1ms duty