Users Manual

FCC ID: 2ATMB-USD1AZ

Users Manual

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FCCID_4491483

2029 Becker Dr Lawrence, KS 66047 User Manual UAV Radar Altimeter US-D1 FCC Certificate Version D00.02.01 6/24/2019 Proprietary information Page 1

2029 Becker Dr Lawrence, KS 66047 Revision History Version Number Date Authors Notes D00.00.01 Mar 2, 2018 Jin Cheng, Sheen Xiao Draft based on engineering spec and customer requirements D00.00.02 April 10, 2018 Jin Cheng, Sheen Xiao Put customer requirements in development phases D00.00.03 September 10, 2018 Zhenyu Hu Update specs and features. Add data format and communication protocol D00.01.01 October 5, 2018 Andrew Megaris Technical Revision D00.02.00 June 24, 2019 Zhenyu Hu Revision for FCC certificate D00.02.01 October 23, 2019 Andrew Megaris Final FCC Edit Proprietary information Page 2

2029 Becker Dr Lawrence, KS 66047 Proprietary information Page 3

2029 Becker Dr Lawrence, KS 66047 IMPORTANT NOTICE This device complies with Part 15 of the FCC rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that may cause undesired operation. This equipment has been tested and found to comply with the limits for a Class B device (commercial or industrial use), pursuant to Part 15 of FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communication. Operation of this equipment in a residential area is likely to cause harmful interference, in which case the user will be required to correct the interference at his/her own expense. NOTE: ● Only peripherals complying with FCC limits may be attached to this equipment. Operation with non-compliant peripherals or peripherals not recommended by Ainstein. ● Modification of this device may void the user’s authority to operate the equipment ● Maintain 20cm of separation for the device during operation. Proprietary information Page 4

2029 Becker Dr Lawrence, KS 66047 1. Technical Data Table 1: Specifications Starting 24 GHz Frequency Bandwidth 0.25 GHz Minimum Operating 0.5 meters Altitude Maximum Operating 50 meters Altitude Altitude 6.0cm (< 1m), 4.0cm (> 1m) Precision Field of View ​43 ° x 30 ° Interface UART, CAN UART: 82 Hz Update Rate CAN : 86 Hz Supply Voltage 5V~13V DC (5.5V recommended) Power 2W(at 5 Volts DC input) Consumption Operational Temperature -20 °C ~ 65 °C* Range Size 108 x 79 x 20 millimeters Weight 110 grams Environmental IP67(with sealant) Conditions Notes: ● All specs above are measured under the environment of 35 °C temperature, standard atmospheric pressure and humidity, without any Electromagnetic Interference (EMI). ● Operational Temperature Range indicates radar works properly in this range. If operating temperature goes beyond this range, radar might not be accurate and can suffer mechanical damage. ● Radar unit can be shipped with either CAN or UART for it’s output data protocol. ● * Operational Temperature Range is based off of the hardware’s subcomponent specifications. Actual operational testing is still pending. Proprietary information Page 5

2029 Becker Dr Lawrence, KS 66047 2. Data Protocol For US-D1 2.1 UART Data Protocol Specifications ● Baud Rate: 115200 b/s ● Data bit: 8 ● Parity bit: N ● Stop bit: 1 ● Voltage Level: 3.3V A single data packet consists of six(6) bytes. Table 2 defines the packet structure. Table 2: UART Data Packet Definition From US-D1 Altimeter To Receiver Byte Data Note 1 0xFE Packet Head 2 0x02 Version ID 3 0x** Altitude (Least Significant 8 Bits) 4 0x** Altitude (Most Significant 8 Bits) 5 0x** SNR 6 0x** Checksum (see formula below) Notes: ● '*' refers to a variable bit containing dynamic data. ● Altitude: The altitude bytes can be combined (total 16 bits) to represent the altitude information in centimeters. The structure would be: 0x[MSB][LSB], where MSB and LSB are each two hexadecimal numbers (8 bits). ● Checksum: The Checksum Byte could be used in the following: ○ checksum = (Version_ID + Altitude_H + Altitude_L + SNR) & 0xFF ○ If checksum = 1, check passed ○ if checksum = 0, check failed Proprietary information Page 6

2029 Becker Dr Lawrence, KS 66047 2.2 CAN Data Protocol Specifications ● Baud Rate: 1 Mb/s ● Frame ID: customized (Standard Frame, Extended Frame) ● Standard: CAN Protocol 2.0 section A and B, ISO 11898-1:2015,-4 A single data packet uses four bytes of either, a Standard or Extended CAN frame. The type of CAN frame used and CAN ID of the device can be customized. The CAN frame is defined in table 3. Table 3: CAN Frame Data Packet Definition From US-D1 Altimeter To Receiver Byte Data Note StdID 0x*** Standard ID frame EtdID 0x******** Extended ID frame (Default 0x00090002) 1 0x** Altitude (Most Significant 8 Bits) 2 0x** Altitude (Least Significant 8 Bits) 3 0x** SNR(Most Significant 8 Bits) 4 0x** SNR(Least Significant 8 Bits) 5 0x00 (Reserved) 6 0x00 (Reserved) 7 0x00 (Reserved) 8 0x00 (Reserved) Proprietary information Page 7

2029 Becker Dr Lawrence, KS 66047 3. Mechanical Drawing Figure 1: Dimensions of US-D1 (Units: mm) Proprietary information Page 8

2029 Becker Dr Lawrence, KS 66047 4. Field Of View Orientation 5. Hardware Interface Table 4: Data Packet Definition Wire Color UART CAN Black Ground Ground White RX(Radar) CAN_LOW Green TX(Radar) CAN_HI Red Voltage(5~13V) Voltage(5~13V) Proprietary information Page 9

2029 Becker Dr Lawrence, KS 66047 Figure 2: US-D1 Cabling Interface 6. Installation Instructions Mounting Requirements: ● Radar face should be perpendicular to the target that to be measured ● Keep radar face clean, and do not cover it. ● Keep any unexpected objects out of radar’s FoV (Field of View), otherwise it might situate radar’s signal ● No specific requirement for mounting orientation Figure 3: Proper Mounting Example Proprietary information Page 10

2029 Becker Dr Lawrence, KS 66047 Ensure altimeter will not be obstructed by mechanical landing gear! 7. Known Issues US-D1 is currently considered a ‘B-Sample’. Table 5 lists the known issues that will be addressed in future revisions. Table 5: US-D1 Known Issues Issue ID Description Notes Proprietary information Page 11

2029 Becker Dr Lawrence, KS 66047 1 If US-D1 is used outside of its Maximum ● For full confidence, Operational Altitude(Table 1). Inconsistent only consider US-D1’s small readings will be output(See Figure 4 data when used within below). its operating range 2 Altitude data from US-D1 may have various ● No action needed step-size, since some post-processing algorithm is implemented after radar processing, e.g. averaging, filtering. 3 Altitude data from US-D1 may give unexpected ● DO NOT rely on US-D1 or incorrect measurements under operation in in an indoor, tightly an indoor environment. Multipath reflections of enclosed environment the sensor’s radio waves are complicated in enclosed environments and may therefore introduce errors in the radar’s processing. Figure 4: US-D1 Altitude Drop-off Example Proprietary information Page 12

2029 Becker Dr Lawrence, KS 66047 Proprietary information Page 13

2029 Becker Dr Lawrence, KS 66047 8. Contact Us ADDRESS: 2029 Becker Drive, Lawrence, KS 66047 USA EMAIL: Hi@ainstein.ai PHONE: 785-856-0460 Proprietary information Page 14


Document Created: 2019-10-25 22:38:25
Document Modified: 2019-10-25 22:38:25
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