chiu choi, ph.d., p.e. technical consultant oiml workshop on the metrology of vehicle speed...
TRANSCRIPT
ENFORCEMENT TECHNOLOGIES TESTING PROGRAM
Chiu Choi, Ph.D., P.E.Technical Consultant
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
1
Outline
• Background• DTR radar testing program• Lidar testing program• ATR radar testing program• New testing programs under
development
2OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Background
• IACP oversees and operates the Enforcement Technologies Testing Program
• Funded by the National Highway Traffic Safety Administration (NHTSA)
3OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Background
4OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Manufacturers-- participation in the testing program on a voluntary basis
• All participants are subjected to the same standards
• Their Devices– to be tested to the appropriate published performance specifications
Background
5OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• NHTSA funded the development of the performance specifications. NIST was involved.
• Currently published performance specifications: DTR Radar, Lidar, and ATR Radar
Background
6OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Conforming Products List (CPL)- a list of devices that passed all the tests specified in their corresponding performance specifications
• CPL is maintained by the IACP• CPL is published. Law enforcement
agencies are encourage to purchase devices on the list.
Background
7OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Two laboratories have contracts with IACP to conduct the testing
• Laboratories are evaluated biannually by IACP with observers from external agencies attending lab visits
• Instruments are kept calibrated• Test results properly recorded and
reported
DTR Radar testing program
8OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Speed-measuring Device Performance Specifications: Down-the-road Radar Module, DOT HS 809 812, NHTSA, June 2004.
• Limited to unmodulated CW radars • Operate while moving down the road• Handhelds
DTR Radar testing program
9OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the requirements? §2.1 Manufacturer Provided Equipment §2.2 Manufacturer Provided Information §2.3 Manufacturer Labeling §2.4 Tuning Fork Calibration §2.5 Radar Device Tuning Fork
DTR Radar testing program
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OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§2.6 Microwave Transmission §2.7 Environmental Extremes §2.8 Low Supply Voltage Indicator §2.9 Doppler Audio §2.10 Speed Monitor Alert
DTR Radar testing program
11OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§2.11 Power Surge §2.12 Speed Display §2.13 Conducted Electromagnetic Interference §2.14 Radiated Electromagnetic Interference §2.15 Speed Accuracy: Field Operation
DTR Radar testing program
12OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the tests? §5.1 (Reserved) §5.2 (Reserved) §5.3 Labeling and Operation Tests §5.4 Tuning Fork Calibration Test §5.5 Radar Device Tuning Fork Test
DTR Radar testing program
13OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§5.6 Microwave Transmission Test §5.7 Environmental Tests §5.8 Low Supply Voltage Indicator Test §5.9 Doppler Audio Tests §5.10 Speed Monitor Alert Test
DTR Radar testing program
14OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§5.11 Power Surge Test §5.12 Speed Display Test §5.13 Conducted Electromagnetic
Interference Tests §5.14 Radiated Electromagnetic
Interference Tests §5.15 Speed Accuracy: Field Operation
Tests
DTR Radar testing program
15OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• To get on the CPL – one unit of the model must pass all the tests.
• To stay on the CPL– CPL Stage II testing on the first 200 units ( at least 90% must pass)
• Subsequently 6 units per year subjected to Critical Performance Testing (all units must pass)
DTR Radar testing program
Test Components for CPL Stage II and CPT: • Tuning Fork Calibration• Tuning Fork• Transmission Frequency Stability• Power Density• Low Voltage
16OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
DTR Radar testing program
Test Components for CPL Stage II and CPT: • Doppler Audio• Internal Circuit• Directional (if applicable)• Low and High Speed Display• Radio Frequency Interference
17OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
DTR Radar testing program
On-going efforts of improvements on the performance specfications: • Common output protocol• Common control protocol
18OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Lidar testing program
19
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Speed-measuring Device Performance Specifications: Lidar Module, DOT HS 809 811, NHTSA, June 2004.
• Applicable to laser speed-measuring devices transmitting infrared pulses
• FDA CDRH Class I eye safety• handhelds
Lidar testing program
20
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the requirements? § 2.1 Manufacturer Provided Equipment§ 2.2 Manufacturer Provided Information§ 2.3 Manufacturer Labeling § 2.4 Range Accuracy§ 2.5 Long Range
Lidar testing program
21
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§ 2.6 Beam Characteristics§ 2.7 Environmental Extremes§ 2.8 Low Supply Voltage Indicator§ 2.9 Supply Voltage Tolerance§ 2.10 Speed Display§ 2.11 Speed Accuracy: Laboratory
Simulation
Lidar testing program
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OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§ 2.12 Auxiliary-Equipment Interface§ 2.13 Conducted Electromagnetic
Interference§ 2.14 Radiated Electromagnetic Interference§ 2.15 Speed Accuracy: Field Operation § 2.16 Vehicle Determination (Lidar Systems
Only): Field Operation
Lidar testing program
23OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the tests?§ 5.1 (Reserved)§ 5.2 (Reserved)§ 5.3 Labeling and Operation Tests§ 5.4 Range Accuracy Test§ 5.5 Long-Range Test
Lidar testing program
24OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§ 5.6 Beam Characteristics Test§ 5.7 Environmental Tests§ 5.8 Low Supply Voltage Indicator Test§ 5.9 Supply Voltage Tolerance Tests§ 5.10 Speed Display Tests§ 5.11 Speed Accuracy: Laboratory
Simulation Tests
Lidar testing program
25OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§ 5.12 Auxiliary-Equipment Interface Tests§ 5.13 Conducted Electromagnetic Interference Tests§ 5.14 Radiated Electromagnetic
Interference Tests§ 5.15 Speed Accuracy: Field Operation Tests§ 5.16 Vehicle Determination (Lidar Systems
Only): Field Operation
Lidar testing program
26OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• To get on the CPL- one unit of the model must pass all the tests.
• To stay on the CPL– CPL Stage II testing on the first 100 units ( at least 95% must pass)
• Subsequently, 6 units per year subjected to Critical Performance Testing (all units must pass)
Lidar testing program
Test Components for CPL Stage II and CPT: • Beam Alignment (Horizontal and
Vertical)• Target Discrimination• Range Accuracy• Low Supply Voltage Indicator
27OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Lidar testing program
Test Components for CPL Stage II and CPT: • Supply Voltage Tolerance• Low-Speed and High-Speed Display
Limits (Approaching and Receding)• Speed Accuracy (With and Without
Perturbation)• Pulse Repetition Rate
28OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
ATR Radar testing program
29
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• Speed-measuring Device Performance Specifications: Across-the-road Radar Module, DOT HS 810 845, NHTSA, Oct. 2007.
• Limited to automated, unmodulated CW radars that transmit a microwave beam at a specified angle to the roadway and make allowance for cosine angle effect
ATR Radar testing program
30
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the requirements? §2.1 Manufacturer Provided Equipment§2.2 Manufacturer Provided Information§2.3 Manufacturer Labeling§2.4 Tuning Fork Calibration§2.5 Tuning Fork
ATR Radar testing program
31
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§2.6 Microwave Transmission§2.7 Environmental Extremes§2.8 Low Supply Voltage Indicator§2.9 Doppler Audio§2.10 (Reserved)§2.11 Power Surge§2.12 Speed Display
ATR Radar testing program
32
OIML workshop on the metrology of vehicle speed measurement devicesNIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§2.13 Signal Processing§2.14 (Reserved)§2.15 Conducted Electromagnetic Interference§2.16 Radiated Electromagnetic Interference§2.17 Speed Accuracy: Field Operation§2.18 Vehicle Determination: Field Operation Speed Measurement
ATR Radar testing program
33OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• What are the tests?§5.1 (Reserved)§5.2 (Reserved)§5.3 Manufacturer Labeling tests§5.4 Tuning Fork Calibration tests§5.5 Tuning Fork tests
ATR Radar testing program
34OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§5.6 Microwave Transmission tests§5.7 Environmental Extremes tests§5.8 Low Supply Voltage tests§5.9 Doppler Audio tests§5.10 (Reserved)§5.11 Power Surge tests§5.12 Speed Display tests
ATR Radar testing program
35OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
§5.13 Signal Processing tests §5.14 Reserved§5.15 Conducted Electromagnetic Interference tests§5.16 Radiated Electromagnetic Interference
tests§5.17 Speed Accuracy: Field Operation tests§5.18 Vehicle Determination: Field Operation
ATR Radar testing program
36OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
• To get on the CPL – one unit of the model must pass all the tests.
• To stay on the CPL– CPL Stage II testing on the first 100 units, at least 95% must pass (under review)
• Subsequently 6 units per year subjected to Critical Performance Testing, all units must pass (under review)
ATR Radar testing program
Test Components for CPL Stage II and CPT: • Tuning Fork Calibration• Tuning Fork• Transmission Frequency Stability• Power Density• Low Voltage
37OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
ATR Radar testing program
Test Components for CPL Stage II and CPT: • Doppler Audio• Internal Circuit• Directional (if applicable)• Low and High Speed Display• Radio Frequency Interference
38OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
ATR Radar testing program
• Few ATR radar systems have been tested recently
• Growing interest in developing performance specifications for and testing of automated, modulated radars
39OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Red Light Camera Systems testing program
• Development underway• Red light camera systems performance
specifications approved• RLCS simulator verified• Working on getting the testing to start
as soon as possible
40OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
Other efforts
• Working on the scanning lidar performance specifications
• Interest in distance over time• Interest in improving electromagnetic
interference testing
41OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013
QUESTIONS?
42OIML workshop on the metrology of vehicle speed measurement devices
NIST Headquarters, Gaithersburg, MD ▪ July 16-18, 2013