Smartmicro TRUGRD Bedienungsanleitung

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 1 of 14 IFebruary 8, 2021

Project Documentation | TRUGRD Stream User Manual

Project Number:

...

SMS Project Number:

Project Title:

TRUGRD Stream User Manual

Keyw ord( s) :

TRUGRD Stream, radar, sensor

Date:

February 8, 2021

Document:

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx

Version:

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 2 of 14 IFebruary 8, 2021

1 Contents

1Contents.................................................................................................................... 2

2Abbreviations............................................................................................................. 3

3Introduction............................................................................................................... 4

4General description .................................................................................................... 5

4.1 Sensor description................................................................................................ 5

4.2 Transmit Signal.................................................................................................... 5

4.3 General Performance Data.................................................................................... 5

4.4 Software and Firmware Version ............................................................................ 6

5Hardware .................................................................................................................. 7

5.1 TRUGRD Stream Sensor View ............................................................................... 7

5.2 Sensor Dimensions............................................................................................... 8

6Cables and Connectors ............................................................................................... 9

6.1 Sensor connector ................................................................................................. 9

6.2 CAN data interface ............................................................................................... 9

6.3 CAN-Settings ..................................................................................................... 10

6.4 RS485 data interface.......................................................................................... 11

7Designated Use........................................................................................................ 12

8Compliance.............................................................................................................. 13

8.1 Declaration of Conformity for USA....................................................................... 13

8.1.1 FCC-Label.................................................................................................... 13

8.2 Declaration of Conformity for Canada .................................................................. 14

8.2.1 Declaration of Conformity in English.............................................................. 14

8.2.2 Déclaration de conformité en francais ........................................................... 14

8.2.3 Industry Canada (IC) Label........................................................................... 14

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2 Abbreviations

ADC Analog-to-Digital Converter

AFE Analog Front-End

CAN Controller Area Network

DSP Digital Signal Processing; Digital Signal Processor

EEPROM Electrically Erasable Programmable Read-only Memory

FMCW Frequency Modulated Continuous Wave

GPIO General Purpose Input Output

MMI C Monolithic Microwave I ntegrated Circuit

RAM Random Access Memory

RS485 Physical communication layer standard EI A RS-485

SPI Serial Peripheral Interface

SOC System on Chip

UMRR Universal Medium-Range Radar

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 4 of 14 IFebruary 8, 2021

3 I ntroduction

This document is a short documentation of the general purpose universal medium range

radar (UMRR) TRUGRD Stream sensor with type 48 antenna.

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4 General description

4.1 Sensor description

The main task of the UMRR is the detection of any reflectors in the field of view, to measure

the distance, the relative speed and the angle to the shortest reflector (and to other reflectors),

to detect motion and to track (filter) the results over time.

For this general purpose measurement application, range and relative radial speed and the

angle value of each reflector inside the antenna beam are measured and the results are

reported via the communication links cycle by cycle.

4.2 Transmit Signal

The UMRR transmit frequency is in the 24 GHz I SM band (24000 MHz to 24250 MHz) and the

used bandwidth is smaller than 250MHz.

Antenna type 48 consists of 2 TX antennas with same antenna characteristics but different

center position on the board and 8 uniform RX antennas. The TX antenna have a 3dB antenna

beam width of + -34° in azimuth and + -6,5° in elevation. The 8 RX antennas have a 3dB

antenna beam width of + -25° in azimuth and + -7° in elevation. Highest TX antenna sidelobe:

@+ 74°, highest RX sidelobe at + -50°.

Note: max. Gain for TX antenna at azimuth angle + -22°, elevation angle 0°. The RX antennas

have max. gain at boresight.

Gain RX: 11.1 dBi.

The device uses different FMCW transmit signal waveforms for distance and speed

measurement.

4.3 General Performance Data

After power up or reset, the sensor readings are within specified performance within < 30

seconds. I n Table 4-1 the general performance data is given.

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 6 of 14 IFebruary 8, 2021

Table 4-1: General performance data

Environmental

Ambient Temperature

-34 ... + 74

degree C

Shock

100

grms

Vibration

grms

67I

Pressure / Transport

altitude

0…10.000

Mechanical

Weight

1580

Dimensions

See 5.2

Housing Identification

Antenna Identification

DSP Board Identification

General

Power Supply

7 ... 32I I

12II I

V DC

Frequency Band

24.0…24.25

GHz

Bandwidth

< 250

MHz

Max. Average Transmit

Power (EI RP)

< 12.7

dBm

Interfaces

CAN V2.0b

RS485 full duplex

10/ 100 Ethernet

Connector

12 Pin plug Hirose LF10WBRB-12PD

CAN,

Power,

RS485,

Eth.

IIP 67 only when connector or cap attached.

II measured at connector, min. voltage slew rate 500V/ s or max. voltage rise time 15ms; supply source impedance

0.5Ohms.

III Typical value 9W @20°C, may slightly increase over temperature.

4.4 Soft ware and Firmw are Version

The software in the TRUGRD Stream has the version 6.

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 7 of 14 IFebruary 8, 2021

5 Hardware

5.1 TRUGRD Stream Sensor View

An example picture of a TRUGRD Stream sensor is shown in the figures below.

Figure 5-1: Housing of TRUGRD Stream front

Figure 5-2: Housing of TRUGRD Stream rear

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 8 of 14 IFebruary 8, 2021

5.2 Sensor Dimensions

All values given in mm.

Figure 5- 3: Dimensions of TRUGRD Stream Sensor

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 9 of 14 IFebruary 8, 2021

6 Cables and Connectors

6.1 Sensor connector

The sensor connector is a 12-pin male (plug) circular bayonet type connector (water proof

IP67, series LF10WBRB-12PD, manufacturer Hirose, Japan). A female counterpart (socket),

e.g. LF10WBP-12S, is used to connect to the sensor. The pin numbering of the socket is shown

in Figure 6-1 the pin description is given in Table 6-1.

Figure 6- 1: View on solder cup side of socket ( rear view of female counterpart to be connected to

sensor)

Table 6-1: Sensor connector pin out model

Pin No.

Function

Wire Color

( MEDI type

# KU110C12J002)

SENSOR_ETH_TX1_P

gray / red

SENSOR_ETH_TX1_N

red / blue

SENSOR_RS485_RX_N

pink

SENSOR_RS485_RX_P

gray

SENSOR_RS485_TX_N

brown

SENSOR_RS485_TX_P

white

External GND

blue

V_SUPPLY

red

SENSOR_ETH_TX2_N

black

SENSOR_ETH_TX2_P

purple

CAN_H

green

CAN_L

yellow

Please note that in the standard configuration the sensor has 120 Ohms resistor on board (CAN

bus termination between CAN_L and CAN_H).

For the RS485 data interface there is a 120 Ohms resistor on board of the sensor.

A number of cable sets for initial operation and test purposes are offered by Smartmicro, to

deliver a fast set-up of a sensor system. Among those preconfigured ready-to-run cables as

well as cable stumps (pig tail cables or various lengths) which carry the connector on one side

and open wires on the other.

6.2 CAN data interface

This specification gives a detailed description of the CAN data communication used in the

TRUGRD_Stream_User_Manual_USA_CAN_200MHz.docx Version 1 IPage 10 of 14 IFebruary 8, 2021

UMRR based systems on the sensor CAN. The UMRR is compliant with CAN 2.0B standard.

CAN is a very robust full duplex bidirectional interface.

6.3 CAN-Settings

Baud Rate: 500 kBit/ s or lower

Tseg1: 8

Tseg2: 7

Tsjw: 2 (SJW: synchronization jump width)

Above values for CAN bit timing are illustrated in Figure 6-2 used in the UMRR radar sensor

(note: the CAN module is integrated in the DSP). For comparison purposes, in Figure 6-3 the

CAN bit timing as defined by the CAN protocol is shown.

The CAN bit timing parts as defined by the CAN protocol (Figure 6-3) can be described as

follows:

•Sync: This part of bit time is used to synchronize the various nodes on the bus. An

edge is expected to lie within this segment. For the UMRR sensor, this segment is

always 1 TIME QUANTUM (TQ).

•Prop: This part of the bit time is used to compensate for the physical delay times

within the network. It is twice the sum of the signal’s propagation time on the bus

line, the input comparator delay, and the output driver delay. For the UMRR sensor,

this segment is programmable from 1 to 8 TIME QUANTA (TQ).

•Phase 1: This phase is used to compensate for positive edge phase error. For the

UMRR sensor, this segment is programmable from 1 to 8 TIME QUANTA (TQ) and

can be lengthened by resynchronization.

•Phase 2: This phase is used to compensate for negative edge phase error. For the

UMRR sensor, this segment is programmable from 2 to 8 TIME QUANTA (TQ) and

can be shortened by resynchronization.

Figure 6-2: CAN bit timing for UMRR sensor

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