立體車庫翻譯及原文(編輯修改稿)
2024-12-06 23:05 本頁面
【文章內(nèi)容簡介】 SRP automation system will evolve as each year passes. No matter which automation technologies are deployed, one important system ponent is to rapidly identify either the vehicle or the driver. Once a unique identification number is known, then centralized control and billing can occur. TRANSPONDERS Transponders are now mon in the Bay Area, used in the FasTrack electronic bridge toll collection system. One vendor provides credit cardsized, batteryfree variants of the bridge toll transponders. These cost $22 apiece, read at slower speeds than 25 mph, and are well suited for parking lot operation. RADIO FREQUENCY IDENTIFICATION (RF ID) RFID tags are small radio tags that may be attached to a vehicle. They operate in the same manner as cellular phone WiFi or Bluetooth identification. The current disadvantages of RF ID are cost, sensitivity to radio frequency interference, and possible confusion between two approaching vehicles. The emerging RF ID industry is working hard to address these disadvantages. The industry39。s stated objective is to lower the cost of RF ID to the point where individual clothing items may be tagged and tracked. Currently “passive tags,” tags without batteries, can be purchased for $2 in large volumes, and readers procured for $2,000 (plus mounting and power). Such passive tags may be read from a distance of 5 feet or less, so should be reliable in parking gate configurations. RF ID can offer accurate read reliability upwards of %. LICENSE PLATE RECOGNITION (LPR) LPR technology uses image processing to identify vehicles by their license plate numbers. A personal puter with a frame grabber card connects to video cameras focused on license plates. Once a video image is captured, algorithms detect the edges of the plate and then extract numbers and letters from within this area. In California, about ten percent of cars do not have front bumper plates, so LPR systems must scan rear bumpers. LPR systems often capture images and illuminate bumpers using the infrared spectrum, to prove high accuracy during night time and overcast conditions. Outofstate and dirty plates tend to frustrate these systems. For maintenance, video camera lenses require periodic cleaning. POLICY OPTIONS Parking automation provides many possibilities to reward or penalize different behaviors. Automation also allows a high level of flexibility, where differing policies may be implemented at different parking lots and land uses. For instance, carpools and vanpools could receive preferential treatment. For instance, a TMA policy might provide carpools with free parking, waiving the $ per day charge. For tightsupply applications, NextSpace could prioritize convenient spaces for carpools and employees, guiding solo drivers to less desirable lots. Likewise, the TMA could decide to discourage midday cold start trips (when the vehicle sits for more than one
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