AGD 331 User manual

PRODUCT MANUAL
© AGD Systems Limited 2019 Doc. Ref 331 PM ISS8
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR

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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
INTRODUCTION
Product & technology 3
Key features 3
Typical applications 3
Product overview image 4
Product variants 4
Product overview 4
INSTALLATION
Radar mounting 5
Radar installation - range 6
SYSTEM HARDWARE OVERVIEW
Power & communications 7-8
RADAR COMMANDS & CONFIGURATION
Radar command overview 9
Command list 10-11
Output configuration string 12
RS232 output message 13
Radar count output 14
Firmware update 15
Dynamic Frame Rate 15
Dip switch SW2 configuration 16
Dip switch SW1 configuration 17
Rotary switch SW3 configuration 18
HELP
Troubleshooting 19-21
RADAR CHARACTERISTICS
General 22
Antenna plots 23
Frequency variants 24
TECHNICAL SPECIFICATIONS
Product specification 25
MANUFACTURING TEST PROCESS
Ariel Test Equipment 26
CERTIFICATION 27
END OF LIFE - DISPOSAL INSTRUCTIONS (EOL) 28
IMPORTANT SAFETY INFORMATION
Safety precautions 29
Low power non-ionising radio transmission
and safety 30
DISCLAIMER 32
Warranty 32
Contact Details 32
Setup
SIMPLE MECHANICAL SWITCH SET-UP
safer, greener, more eicient
Table of Contents

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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
The 331 detector is a true ranging FMCW radar
designed for OEM integration into Vehicle
Actuated Sign (VAS) applications.
Operating in the 24GHz K-band, the 331 oers an
accurate speed measurement while discriminating
between advancing and receding traic.
Technical advancements allow for extremely
low power consumption while maintaining vehicle
detection distances up to 180 metres.
Introduction
PRODUCT & TECHNOLOGY
KEY FEATURES
• Target speeds reported based upon multiple configurable parameters
• Range to target up to 180 metres
• Speed measurement 11kph – 160kph
• Bi-directional discrimination
• Dynamic frame rate for further reduction in power consumption (Patent pending)
• Two independent FET switched outputs
• RS232 serial communications for configuration and data output
• Simple set-up option using rotary switches
TYPICAL APPLICATIONS
Sign Activation - Speed Sign Activation - Warning

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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
Introduction
PRODUCT OVERVIEW
The 331 radar is a ground-up development by AGD using the latest power saving radar technology. The heart of
the radar’s design is a unique pulsed, frequency modulated transceiver linked to a 32bit ARM Cortex processor.
This helps deliver market leading radar performance while maintaining extremely low power usage.
Traditional Continuous Wave (CW) Doppler radars for sign driving applications have no ranging capability.
The 331 contains filter-down technology from AGD enforcement products, this furnishes the radar with a full
multi-target acquisition platform, accurate range measurement, and adjustable output rate of targets. To the
VAS designer, this simply means the system power is more eiciently managed by the ability to select the area of
interest accurately (regardless of vehicle size).
Designed to be simple to use and quickly deployed into the end users sign solution, the 331 range and low speed
can be set-up and adjusted via rotary and dip switches conveniently located on the rear of the unit. Additional
parameters are accessible via an RS232 serial interface. Utilising the same compact form factor as the AGD 330
radar, the 331 radar oers a direct physical retrofit solution, for those wishing to add more functionality.
PRODUCT OVERVIEW IMAGE
Power-up and output
detect LED
Power input, RS232
and switched output
connections
Switch 1
(Low speed threshold)
Switch 3 (Range)
Switches 2 (DIP)
* SW1 and SW3 can only be used to set the low speed threshold and range on switched output 1
PRODUCT VARIANTS
Product No. Description
331-102-000 In sign radar/12V/24.2GHz/RS232/No connection cables
331-103-000 In sign radar/12V/24.125GHz/RS232/No connection cables (FCC)

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IN-SIGN RADAR TRAFFIC DETECTOR
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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
Installation
RADAR MOUNTING
Installation of the radar within the sign should be in
accordance with the table below which specifies the
spacing (D) of the radar module PCB assembly from the
inside front surface of the sign. These measurements
are based upon a typical polycarbonate fascia and have
been tested to provide optimum radar performance.
In the instance of dierent thickness front panel
materials, customers are advised to contact AGD systems
for further information and technical support.
Standard fixing of the radar module is based upon a set
of four mounting holes with the dimensions shown in
the diagram on the right.
The recommended material situated in front of the 331 is 4mm thick polycarbonate.
The relatively wide beam profile of the 331 ensures good detection coverage of single or dual lane approaches
with relatively little adjustment of the sign in relation to the direction of approaching targets.
The recommended mounting height of the radar within the sign is between 2-5 meters with the optimum
being 3 metres.
D=15mm 72mm
62mm
55mm
Holes 4mmØ
65mm
The radars planar antenna
should be 90
0
to the road
surface, inclines in the
road surface should be
catered for by adjusting
the 331 radars mounting
angle.
Front screen material thickness Recommended Spacing D Comments
0.5mm 15mm +/- 1mm Spacing for 0.5mm material is not critical
1.0mm 15mm +/- 1mm
2.0mm 15mm +/- 1mm
3.0mm 15mm +/- 1mm
4.0mm 15mm +/- 1mm Spacing for 4mm material is not critical
5.0mm 15mm +/- 1mm
6.0mm 15mm +/- 1mm

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IN-SIGN RADAR TRAFFIC DETECTOR
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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
Installation
RADAR INSTALLATION - RANGE
The 331 is a true ranging radar that allows the user to select at what range the radar needs to start reporting on
tracked targets.
Each target needs to return suicient signal in order for the radar to track its range. A target returns signal
related to its Radar Cross Section (RCS) which is in part related to the reflecting area of the target. Targets that
have a larger RCS will return a higher signal than those with a smaller RCS.
For example: If the detection range is set at 80 metres then all targets that have enough reflective power before
this point will be tracked. Only when the target reaches 80 metres will detection occur, allowing for accurate
actuation of the sign at the correct range.
Maximum
Range 180m
Dual Lane
Detection 25m
Minimum
Range 16m

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IN-SIGN RADAR TRAFFIC DETECTOR
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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
System Hardware Overview
POWER & COMMUNICATIONS
Terminal Connections
Pin No. Function Power Off Power On - No Detect Power On - Detect
1 +5.5 to 15Vdc - - -
2 0Vdc / RS232 GND / Switched GND - - -
3 RS232 TX - - -
4 RS232 RX - - -
5 Switched Output 1 (FET1) N/O N/O N/C
6 Switched Output 2 (FET2) N/O N/O N/C
7 0Vdc / RS232 GND / Switched GND - - -
Power
The radar is powered using a DC voltage in the range
of 5.5 – 15Vdc. The power is applied to terminals 1 and 2
located at the bottom of the radar.
Power consumption whilst detecting 15mA @ 12V
Power consumption whilst not detecting with default dynamic
frame rate set 10.5mA @12V (see page 15 for further detail)
* Please note that terminal 2 and 7 also serves as the
RS232 GND connection and the 0V potential
for FET 1 and 2 switched outputs.
Power-Up Sequence
Upon initialisation from power-up or *REBOOT! the LED will
flash five times to indicate the radar has powered-up correctly.
FET Switched Outputs
The switched outputs are driven via Field Eect Transistors (FET) that are
biased toward 0V. All external equipment should be connected to the same 0V.
When the FET is low impedance (<25Ω), the host equipment will be at the same potential as 0V.
When the FET is high impedance (>100kΩ), this will be the same as an open switch.
The field eect transistors are rated at:
Max Voltage 15V
Max Current 50mA
*All connections should be made to the unit before applying power.
15mA
5.5 6 8 10 12 14 15
331 CURRENT
Supply voltage (v)
Supply current (mA)
30
28
26
24
22
20
18
16
14
12
10
9
8
5.5 6 8 10 12 14 15
331 CURRENT
Supply voltage (v)
Supply current (mA)
70
65
60
55
50
45
40
35
30
25
20
15
10
5
15mA
65mA - AGD330
FIG 1: SUPPLY CURRENT VS. SUPPLY VOLTAGE
KEY:
___
Detect
___
Non Detect (default DFR)

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IN-SIGN RADAR TRAFFIC DETECTOR
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IN-SIGN RADAR TRAFFIC DETECTOR
AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
System Hardware Overview
POWER & COMMUNICATIONS
RS232 UART Interface
A UART interface is provided that uses RS232 voltage levels on the terminal connector:
Default UART Settings
Communications can be established with the 331 Radar using MS-226 (FTDI USB-232 converter) cable assembly
(pictured) supplied separately. The wire ends should be connected as follows:
FTDI Wire Colour 331 Terminal Connection Function
Black 2 or 7 Ov
Yellow 3 TXD
Orange 4 RXD
Parameter Settings
Baud rate 115200
Data bits 8
Parity None
Stop bits 1
Flow control (handshaking) None
Transmit delay 0

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IN-SIGN RADAR TRAFFIC DETECTOR
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IN-SIGN RADAR TRAFFIC DETECTOR
Radar Commands and Configuration
RADAR COMMAND OVERVIEW
Commands can be used to control the operation of radar. These are sent over the RS232 UART Link.
Commands are immediately followed by an operator that indicates the required action. Not all the operators
are supported for all commands. Where an operator is used and it is not supported the radar will respond with
warning message. The table shows the commands used by the radar.
Operator Operation
= Set a parameter to a value e.g. *LS=50<CR>
? Respond with value or values
^ Set default value for parameter
$ Provide help on the command
! Do something e.g. *REBOOT! Reboots the radar
Command Operators
Where a command is used to enquire or set a radar parameter the radar will respond in a set way. The radar
will respond with a hash, #, followed by the command name, operator used and then the value of parameter or
parameters.
For example
*DIR=A<CR> Radar responds with #DIR=A<CR>
*DIR?<CR> Radar responds with #DIR?A<CR>
Communication Tasks
The operation of the 331 radar has been optimised as a low power device with minimal processing overhead.
It is good practice to not ‘overrun’ the communication line with repeated send commands when the radar is
operational.
Command requests to store settings are written to EEPROM each time they are sent from the host system,
repeated sending of commands will erode the lifetime capacity of the radars non-volatile memory.

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IN-SIGN RADAR TRAFFIC DETECTOR
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AGD 331
IN-SIGN RADAR TRAFFIC DETECTOR
Radar Commands and Configuration
COMMAND LIST
Command Suffixes Description Default Lower
Limit
Upper
Limit
Comments
AGD -Shows detector type & version
information
---Reports radar model and
version information
*BAUD ?
=
^
$
Baud rate for RS232 115200 9600 115200 9600 or 115200
*note - the customers selected
baud rate is always reported at
115200 on start up
*COUNTDIR ?
=
^
$
Enquire / set the direction of vehicle count A--A = Advancing
R = Receding
B = Bi-Directional
*DEFAULTS !
$
Set all radar parameters to their default
values
----
*DEFAULTSTATS !
$
Resets the number of target detections as
reported by *STATUS? command
----
*DFR ?
=
^
Dynamic frame rate.
When set to a value >1, if the radar does
not detect a potential target it will not
transmit again for the set number of
frames
2020 This is used to further reduce
power consumption. See
page 15.
*HELP ?
$
!
Displays all user commands ----
*HOLDTIME ?
=
^
$
The time the switched output is held on
after the target has left the detection zone
setting global to both outputs
500 10 2000 Values are in milliseconds
*LED ?
=
^
$
Enquire / set the operation of the LED on
the rear of the unit.
ON OFF ON *LED=0 turns off LED
*LED=1 turns on LED and
mimics *OUT1 on LED
Off will help lower the current
consumption
*MM ?
^
$
=
Targets reporting method
1 = Fastest target
2 = Oldest valid tracked target
3 = Average Speed of oldest tracked target
213-
*MONITOR ?
=
^
$
Switched output 1 will produce a constant
demand if no target is seen for the
duration of the monitor time
0072 Hours where 0 is off
*MS ?
=
^
$
Message type
02 = dd(10fps)
06 = *Sddd (10 fps)
09 = *Sddd (5fps)
12 = ddd,D Where D is A for advancing and
R is for receding
12 02 12 -