Pulse and phase integrated laser distance measurement device

Abstract

The invention discloses a pulse and phase integrated laser distance measurement device. The device comprises a control unit, a pulse driving unit, a laser emitter, a laser receiver, a beam splitter prism, a display unit, an ocular lens, a photoelectric converter, an operational amplifier A, a PIN detector, an operational amplifier B, a double-path high-speed comparator and a pulse timing unit. A laser generator emits pulse laser, the pulse laser is reflected to the beam splitter prism through a to-be-measured target, one path is incident to the ocular lens, the other path is incident to the laser receiver, and the photoelectric converter is connected with the double-path high-speed comparator through the operational amplifier A; the laser generator emits pulse laser to be incident to the PIN detector, the PIN detector is connected with the double-path high-speed comparator through the operational amplifier B, the double-path high-speed comparator is connected with the pulse timing unit, and the pulse timing unit is connected with the control unit. According to the invention, a pulse distance measurement and phase distance measurement combined mode is adopted, so that the product can accurately measure far and near distances and is convenient to operate and simple to use.

Description

technical field [0001] The invention relates to a laser distance measuring device, in particular to a pulse and phase integrated laser distance measuring device. Background technique [0002] The common laser range finder can measure long distance, generally can measure one thousand to two thousand meters, or even farther, and also can measure short distance, generally within tens of meters, and also within a few meters, laser range finder is commonly used The ranging principle includes pulse ranging, phase ranging and triangulation ranging, etc. Pulse ranging uses the propagation time of transmitted light and received light to calculate the detection distance. The phase difference that occurs when propagating in space is used to detect the distance. The triangulation method uses the geometric principle of light to calculate the detection distance according to the position of the light spot reflected back by the measured object on the photosensitive element. In actual use, ...

AI Technical Summary

Problems solved by technology

In actual use, different distance measurement products are selected according to different application requirements, but it is impossible to realize the distance measurement requirements of a product for long and short distances

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