AGD331 INTRODUCTION In-Sign Radar Traffic Detector PRODUCT AND TECHNOLOGY 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 offers an accurate speed measurement while discriminating between advancing and receding traffic.
In sign radar/12V / 24.125GHz / RS232 / Low-Speed/ No connection cables (FCC) 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.
55mm 65mm provide optimum radar performance. In the instance of different thickness front panel materials, customers are advised to contact AGD systems for further information and technical Holes 4mmØ 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.
Only when the target reaches 80 metres will the detection be reported, allowing for accurate actuation of the sign at the correct range. Maximum Range 180m Dual Lane Detection 25m Minimum Range 16m AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
The FETs are protected by overvoltage circuitry so the outputs are rated at: Max Voltage 15V 331 CURRENT Max Current 50mA All connections should be made to the unit before applying power. 65mA - AGD330 AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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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 Yellow Orange AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
Up to 10m 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. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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 AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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0 speed as the unit exits detect state after holdtime has expired *Zerospeed=1 enables the output of 0 speed Note: 1 mph = 1.6093 kph AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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*OUT3 = detect, 4, 160, 180, Mode = detect / disabled A<CR> Low speed threshold 4kph 159kph High speed threshold 5kph 160kph Maximum range 180m *OUT3 = disabled Direction = A / R / B AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
Will disable FET output 1 from operation in RS232 mode. However, the output can still be set using SW1 and SW3. Example: *OUT2=count<CR> Will enable the count function on FET output 2 only, and will also provide a count data line in the RS232 output. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
35ms ‘Pulse’ = 1 advancing target counted this frame 55ms ‘Pulse’ = 1 receding target counted this frame 75ms ‘Pulse’ = 1 advancing AND 1 receding target counted this frame Count Accuracy Free flow, moderate and heavy flow studies have returned an average accuracy of >93%. If using a low speed variant and looking at slow moving traffic, the accuracy will be reduced depending upon variables such as gaps between vehicles. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
DYNAMIC FRAME RATE ADDITIONAL MAX DELAY TIME (SECONDS) TYPICAL CURRENT CONSUMPTION @12V (MA) Standard Rate *DFR=2 (Default) 10.5 *DFR=5 *DFR=10 *DFR=20 *DFR=20 *DFR=10 *DFR=5 *DFR=2 Standard Rate Seconds FIRMWARE UPDATE The 331 radar is designed to be re-flashable with firmware updates. Please contact AGD technical support for further instruction. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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On = Count on switched output 2 (advancing targets only) Off = Output 2 disabled *Note - These switch values are ignored if SW1 and SW3 are both set to zero enabling RS232 configuration of settings AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
2 outside of the designated values are made via the RS232 connection. RS232 mode. Switches inoperable Please note: If using a low-speed variant 331 you will have to connect via RS232 to adjust the speed below 11kph AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
16-50 m 16-100 m to switched output 1 and 2 outside of the designated values are made via the RS232 connection. 16-60 m 16-120 m 16-70 m 16-180 m RS-232 16-80 m User Selectable AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
The operational voltage supply range for the radar is 5.5 to 15Vdc (nominal 12Vdc). It is possible, especially in solar & battery based installations that the voltage supply level can fall outside the specified limits. Operation of the radar is not guaranteed outside these limits and incorrect operation can be manifest in an erratic or flashing LED state. Please check the voltage supply and reconnect the radar. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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RS 232 link which will enable new functions as they are available. There is no requirement for the customer to return the hardware to AGD for upgrade. I have set the detection range to 100m but motorbikes are only detected at 75m, why is this? The signal a vehicle generates is proportional to the size of its radar cross-section (reflecting area).
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The speed measurement algorithm in the 331 radar is a cut-down version of the speed measurement algorithm used in high grade speed enforcement radars manufactured by AGD. The 331 radar outputs the speed of the target to the nearest integer. It is rounded to the nearest integer from a calculation of more significant figures. Each radar is calibrated with a tolerance of +/-3kph...
Licence required for use Frequency allocated but EIRP too high It is important to note that this table is updated from time to time. Please contact AGD for latest information if your intended country of use is not currently represented.
• KPH or MPH via RS232 the right to change their specification or design without • Full configuration of all parameters via RS232 notice. EN 301 489, EN 50293, EN 300 440, FCC CFR47 Part 15.245, RoHS Approvals RSS-210, AS/NZS 4268 COMPLIANT Restriction on Hazardous Substances AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
20cm of the body. • The transmitter must not be co-located or operating in conjunction with any other antenna or transmitter. • C hanges or modifications not expressly approved by AGD Systems Ltd could void the user’s authority to operate the equipment. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
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Regulations 2017 (SI2017/1206) There is no restrictions of use within any EU Member state for this product. This product is Receiver Category 2. Indicates compliance with all applicable Australian ACMA technical standards and associated record- keeping (including testing) arrangements. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
It is considered to be good practice not to subject humans to radiation levels higher than is necessary. In a works environment where multiple equipment on soak test are to be encountered then it is considered good practice to contain the equipment in an appropriate enclosure lined with radar absorbing material. AGD331 | IN-SIGN RADAR CROSSING DETECTOR...
Warranty All AGD products are covered by a 12 month return to factory warranty. Products falling outside this period may be returned to AGD Systems for: evaluation, repair, update or re-calibration, any of which may be chargeable.
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