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TABLE OF CONTENTS INTRODUCTION Product & technology Key features Typical applications Product overview 3 3 4 4 RADAR CHARACTERISTICS Radar antenna Operating frequency band and power Frequency modulation RADAR PERFORMANCE INSTALLATION 5 5 6 7 Radar installation and alignment 8 SYSTEM HARDWARE OVERVIEW System hardware overview RS422 serial interface Connector Connector mating cable Power supply 9 10 10 10 10 SOFTWARE FUNCTIONALITY Overview 12 RADAR COMMANDS Radar Command Overview Command Opera
INTRODUCTION PRODUCT & TECHNOLOGY 317 This product has been designed specifically to measure the speed and range of passing vehicles in multiple lanes. The radar is able to track up to ten target signals in either approaching or receding directions (limited to 5 targets in each direction when using bi-directional mode). The 317 radar is a frequency modulated continuous wave, FMCW, radar that operates in the 24GHz band.
INTRODUCTION TYPICAL APPLICATIONS Speed enforcement radar traffic detection - receding Speed enforcement radar traffic detection - receding PRODUCT OVERVIEW Mounting points Indicator LED Data connector 4
RADAR CHARACTERISTICS The radar has been designed to have a specific set of functional characteristics which make it suitable for range & speed measurements of multiple targets.
RADAR CHARACTERISTICS FREQUENCY MODULATION The radar is an FMCW radar where the Frequency Modulation (FM) characteristics give the radar a transmit bandwidth of 44MHz. The FM is such that it is symmetric about the centre frequency of the band it is operating in. The change in transmit bandwidth with temperature is measured to be typically 30KHz/˚C. The stability of the bandwidth over time is anticipated being better than 3% in the first year and lower for each subsequent year.
RADAR PERFORMANCE RADAR PERFORMANCE Signal to Noise (Detection Range) A series of radar techniques have been used in the 317 to maximise the signal to noise ratio for a given target. The range performance of the 317 is tested at manufacture by simulation over the range 6 to 70m. Range Measurement The range resolution is largely a function of the bandwidth. The range is reported in units of metres. The range of a target is reported to the nearest 0.1m.
INSTALLATION RADAR INSTALLATION & ALIGNMENT For best detection performance the radar must be setup correctly. Failure to do so can result in inaccurate or false detections. 7º System Integration Radars are supplied factory programmed to be used for a specific mounting angle, usually to 22 degrees. This angle is the angle the radar points across the road from the direction of the road (see diagram). The command *ANGLE may be used to query or set the angle.
SYSTEM HARDWARE OVERVIEW SYSTEM HARDWARE OVERVIEW Target Simulator Microwave Transceiver Amplifiers & Signal Conditioning Modulation Analogue to Digital Converter RS422 Digital Signal Processor 9
SYSTEM HARDWARE OVERVIEW RS422 SERIAL INTERFACE A UART interface is provided that uses RS422 voltage levels on the communications connector. At power-on a Boot-loader program is executed and uses a fixed Baud rate of 115200,N,8,1. The Boot-loader executes the main application code which uses a default baud rate for of 460800 8 data bits with odd parity. The Baud rate of the application code may be changed using the *BAUD command to speeds of up to 921600.
SYSTEM HARDWARE OVERVIEW RS422 SERIAL INTERFACE (CONTINUED) 317 Connection Details RS422 CONNECTOR CONNECTIONS Cable colour Description 1 White 422 Rx A non-inverting input to 317 2 Brown 422 Rx B inverting input to 317 3 Green 422 Tx Z inverting output from 317 4 Yellow 422 Tx Y non-inverting output from 317 5 Grey 0v DC 6 Pink +12v DC 7 Blue n/c 8 Shield n/c Pin No Power supply The radar is powered using a DC voltage in the range of 10.8 to 16 Volts.
SOFTWARE FUNCTIONALITY OVERVIEW At power-on the 317 radar executes a Boot-loader program which communicates at a fixed Baud rate of 115200, no parity, 8 data bits and 1 stop bit over the RS422 interface. The Boot-loader provides facilities for erasing the Flash and updating the firmware. The 317 radar uses a real time operating system and is continuously performing a number of tasks simultaneously using a time multiplexing method.
RADAR COMMANDS RADAR COMMAND OVERVIEW Commands are used to control the operation of the radar. These are sent over the RS422 UART link. Commands are immediately followed by an operator that indicates the required action. Not all operators are supported for all commands. Where an operator is used and it is not supported the radar will respond with a warning message. The table shows the operators that are used by the radar. Operator Operation = Set something to a value e.g.
RADAR COMMANDS RADAR COMMAND LIST Command Type Function AGD *ANGLE *BAUD ?/= ?/= Default Value Min Value Provides the firmware version Enquire / set the radar mounting angle 22.0 Enquire / set the BAUD rate of the radar. baud The programmed value is stored in 460800 non-volatile memory and is used the next time the radar is powered on. *BAUD=,, , e.g.
RADAR COMMANDS *TS COMMAND & HARDWARE SELF-TEST The radar has a built in hardware based target simulator. This command is used to perform a self-test using this built in target simulation hardware. There are twelve targets that maybe simulated in either receding or approaching directions *TS=, The format of the command is: The target parameters for each target are shown in the table below.
RADAR COMMANDS *TS COMMAND & HARDWARE SELF-TEST (CONTINUED) When in Advance Mode the radar will only accept and report simulated targets that are advancing. If a recede simulated target is requested the radar processing will reject the target as ‘wrong direction’ and only the #TS:COMPLETE message will be sent as confirmation that the simulation has been completed. When in Recede mode vice versa.
MESSAGE FORMATS TARGET DETECT MESSAGE Target Detect Message This message is sent after the radar has established that a vehicle has entered the radar’s beam. The numbers above the boxes in the diagram below indicate how many bytes are used for each field.
MESSAGE FORMATS RADAR EVENT MESSAGES Heart Beat message This message is sent each time the heart period expires. The heart beat message period is controlled using the *HBP command. The heart beat period is measured in seconds.
MESSAGE FORMATS UPDATING APPLICATION CODE The 317 contains Bootloader firmware resident in Non-volatile memory which allows the main application firmware to be updated over the RS422 port. The Bootloader firmware is completely independent from the main application so it is always possible to re-load code. • Configure a terminal communications port to a baud rate of 115200, No Parity, 8 data bits and 1 stop bit.
MESSAGE FORMATS UPDATING APPLICATION CODE • Send the application file (MI-144-x.agd) over the port. AGD recommends inserting a delay of 1ms between each line as shown in the following screen-shot File to Codeload 1mS delay • The Bootloader responds with #DATA=DATAOK for each line of the file.
MESSAGE FORMATS UPDATING APPLICATION CODE • Change the BAUD rate for the main application to 460800, ODD parity, 8 data bits and 1 stop bit (if using RealTerm you need to hit the ‘Change’ button after changing the settings.
ANTENNA PLOTS Power (dB) ANTENNA PLOTS ___ Horizontal Beam Pattern ___ Vertical Beam Pattern Angle (Degrees) 22
LABELS The 317 radar is supplied with a series of labels on the radar and on the packaging to satisfy various legislative requirements. The following are the main labels: Product Packaging Demonstrates compliance with the European Radio Eqipment Directive 2014/53/EU. There are no restrictions of use within any EU Member state for this product.
TECHNICAL SPECIFICATIONS 50mm 140mm 140mm 115mm 115mm SPECIFICATIONS Technology FMCW Radar Radiated Power <100mW EIRP Centre Frequency 24.125GHz Bandwidth 44MHz Range 6 to 70m Mounting Flange fixing (4 x M4) Mounting Height 1 - 3m nominal Speed Range 12 to 300 kph Weight 0.7 Kg nominal Housing Material UV Stable Polycarbonate Housing Finish Self coated black Sealing IP66 Operating Temperature -20°C to +60°C Power 2.7W at 12V dc Power Supply 10.
TEST & CALIBRATION DEDICATED TEST EQUIPMENT The key test functions performed by Hyperion to Certify the premium performance of the 317 are: • True range simulation of target • Target speed and direction simulation at a given range • Radar target processing optimisation • Transmitted radar frequency modulation measurement • Verification of interface and communication protocols • Test cycle time of 9 minutes 25
MANUFACTURING TEST PROCESS TEST EQUIPMENT: HYPERION TM INTELLIGENT DETECTION SYSTEMS PRODUCT TEST: 315 | 316 | 317 | 318 | 331 | 335 | 336 | 342 TEST FUNCTION: • True range simulation of target • Radar target processing optimisation • Test cycle time 9 minutes • Verification of communication protocols TEST EQUIPMENT: HYPERION HYPERION was designed and developed by AGD Systems TM INTELLIGENT DETECTION SYSTEMS PRODUCT TEST: 315 | 316 | 317 | 318 | 331 | 335 | 336 | 342 TEST FUNCTION: • True rang
END OF LIFE – DISPOSAL INSTRUCTIONS (EOL) AGD317 RADAR TRAFFIC DETECTOR Item 1 Qty 1 2 3 4 5 6 7 8 4 4 4 1 2 1 1 Material Electronic Assembly - Mixed metal+ printed circuit board Steel Brass Vulcanised Fibre Printed Circuit Board Nylon Printed Circuit Board Polycarbonate Item 9 10 11 12 13 14 15 16 Qty 1 4 4 1 1 4 1 1 Material Cable Assembly - Mixed Metal + PVC Stainless Steel Brass Polycarbonate Polycarbonate Steel Neoprene Nickel Silver • • • • • Reuse / Recycle Separate & Recycle Downcycle Haz
IMPORTANT SAFETY PRECAUTIONS All work must be performed in accordance with company working practices, in-line with adequate risk assessments. Only skilled and instructed persons should carry out work with the product. Experience and safety procedures in the following areas may be relevant: • Working with mains power • Working with modern electronic/electrical equipment • Working at height • Working at the roadside or highways 1.
IMPORTANT IMPORTANT INFORMATION Low Power Non-Ionising Radio Transmission and Safety Concern has been expressed in some quarters that low power radio frequency transmission may constitute a health hazard. The transmission characteristics of low power radio devices is a highly regulated environment for the assurance of safe use. There are strict limits on continuous emission power levels and these are reflected in the testing specifications that the products are approved to.
CERTIFICATION
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DISCLAIMER While we (AGD Systems) endeavour to keep the information in this manual correct at the time of print, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the information, products, services, or related graphics contained herein for any purpose. Any reliance you place on such information is therefore strictly at your own risk.
