(i) Terms and Definitions
This standard defines five specific terms: video pedestrian detector, number of pedestrians, directional pedestrian count, pedestrian waiting time, and overlimit pedestrian warning.
(ii) Technical Requirements
1. Outdoor environmental conditions requirements: The ambient temperature during operation, the temperature that can be tolerated when not in use, relative humidity, atmospheric pressure, environmental brightness, and visibility.
2. Functional and performance requirements: A road traffic video pedestrian detector should at least have waiting area pedestrian detection function and crosswalk pedestrian detection function.
3. Electrical safety performance requirements: Power adaptability requirements, insulation resistance, electrical strength, environmental adaptability requirements.
4. Environmental adaptability requirements: Low temperature performance, low temperature endurance, high temperature performance, high temperature endurance, thermal shock endurance, wet heat endurance, mechanical vibration endurance, protection rating, appearance and components of the detector.
(iii) Test Methods
This standard specifies test method content including test conditions, handling of test results, relative error of test accuracy, functional and performance tests, electrical safety performance tests, environmental adaptability tests.
(iv) Inspection Rules
Detector inspection is divided into type testing and factory testing. Only after passing type testing can mass production commence. Type testing is generally organized by a national statutory quality supervision agency. Factory testing is conducted according to Table 1 by the product manufacturer's quality inspection department; upon successful testing, a certificate of qualification should be issued before the detector can leave the factory.
(v) Identification, Packaging, Transportation and Storage
1. Identification: The identification of the detector should use nameplates or direct painting/stamping methods. Identifications need to be clear, easily recognizable, and resistant to fading or peeling due to environmental changes. Packaging storage identification should comply with GB/T 191 regulations, including patterns such as "moisture protection" and "handle with care", which should also be printed on the detector's packaging box.
2. Packaging: The exterior package of products is recommended to use corrugated cardboard boxes; inside it should use polyurethane foam board or plastic foam for cushioning; the packaging needs to be strong, reliable, adaptable to common transportation and handling equipment.
3. Transportation: Packaged detectors can be transported using conventional transport tools; during transportation and handling, they should avoid violent vibrations, rain exposure, sun exposure, contact with corrosive gases and mechanical damage.
4. Storage: Detectors should be stored in environments with temperatures ranging from -10℃ to 55℃, relative humidity less than 90%, protected from rain exposure, free of corrosive gases. The warehouse storing detectors should be clean, ventilated, dry, without acid, alkali or corrosive gases; there should be no strong mechanical vibrations or magnetic fields around the detector. The height of wooden pads laid under stacked detectors should not be less than 100mm. Chemical substances and damp items should not be stored in the same warehouse with the products. Products should maintain a distance of at least 0.5m from walls, and a minimum distance of 1m from heating equipment.