Koncepcija ir klasifikacija diapazono ieškikliai
A rangefinder is a type of trajectory estimation instrument used to measure target distance, shake the table/oscillator, and perform trajectory estimation. There are many forms of rangefinders, paprastai a long cilindrinis device consisting of an objektyvas lens, an okuliaras, and a ranging knob, used to measure the distance of a target.
Ultragarsas nuotolio ieškiklis
Ultragarsinis diapazono ieškiklis priemonės the charakteristikos of ultrasonic waves reflected back from obstacles. The ultrasonic transmitter emits ultrasonic waves in a certain direction and starts time at the same time. The ultrasonic waves propagate in the air and immediately return when encountering obstacles. The ultrasonic receiver immediately interrupts time upon gavimas reflected waves. Pagal Nuolat Aptikimas The Echo Reflected By Obstacles after wave emission, the time difference T between transmitting ultrasonic waves and gavimas echoes is išmatuotas, ir tada the distance L is calculated.
Ultrasonic rangefinder, due to the significant influence of the surround environment on ultrasonic waves, generally has a relatetively short measurement distance and low measurement accuracy. At present, the scope of use is not very broad, but the price is relate low, paprastai a keli šimtas juanis.
Infraraudonųjų spindulių nuotolio ieškiklis
An instrumentas kad naudoja moduliuotas infraraudonųjų spindulių šviesa for tikslus atstumas matavimas, su a diapazonu paprastai iš 1-5 kilometrai. The principle of non diffusion in infrared propagation is utilized: because the refractive index of infrared is labai small when it pass through other substances, long-distance rangefinders will consider infrared radiation, and the propagation of infrared radiation takes time. Kada infraraudonųjų spindulių spinduliuotė is spinduliuota nuo the rangefinder and encounters a reflector, it is reflected back and received by the rangefinder, and then the distance can be calculated based on the time it takes for infrared radiation to be emitted and received, as well as propagation speed of infrared radiation
The privalumai of infrared ranging are cheap, easy to implement, and safe, but the distests are low accuracy, short distance, and poor directionality.
