Acuity AccuRange AR1000, Руководство пользователя

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AR1000 User’s Manual
Rev 1.7 1/10
4
2. General Description
The AR1000H is a laser diode based distance measurement sensor for ranges up to 118 feet (30m) on
regular surfaces and up to 500 feet (150 m) using a reflective target. The accuracy is generally
specified with a linearity of +/- 0.08 inches (2mm). Linearity will vary depending on temperature and
surface reflectivity of the target surface. The AR1000H unit version has an on-board heater for cold
use in cold environments.
± 2 mm for white surfaces, (+15 °C ... +30 °C)
± 3 mm for natural surfaces, (+15 °C ... +30 °C)
± 4 mm at 0.1 ... 0.5 m range in DS mode, (+15 °C ... +30 °C)
± 5 mm over full temperature range (-40 °C ... +50 °C)
2.1. Principles of Operation
The AR1000H uses the time of flight of light to measure distance. The laser beam is projected
from the housing’s aperture and shines on a target surface, where it creates a small spot. From
there the laser light is scattered in all directions. A collection lens is located in the sensor to the
side of the laser aperture. It collects a portion of the reflected light, which is focused on a
photodetector and converted to an electrical signal. The signal is amplified and symbolizes a shift
in phase. This phase is compared to a reference signal to determine the amount of shift and hence
a change in distance..
2.2. Mechanical Dimensions
The following diagram shows the mechanical dimensions for the small AR1000. The sensor has
four 6.6 mm holes on the side flanges for mounting to a fixture. The cable is for power and all
communication (serial, analog, trigger, power, etc.). It is a 12-pin M18 flange-mount connector
(Binder series 723). The outer case of the sensor is extruded aluminum with powder-coated paint
for corrosion resistance.