Laser ranging device and method and electronic equipment

Abstract

The embodiment of the invention provides a laser ranging device and method and electronic equipment. The laser ranging device comprises a control module, a state detection module, a transmitting module, a timing module and a receiving module. The state detection module prohibits sending of a starting pulse signal to the timing module when determining that the timing module is in a non-stop timingstate, the timing module performs timing according to the starting pulse signal and a stop pulse signal to obtain a timing value, and the control module determines a predicted distance value between atarget object and the laser ranging device according to the timing value. The state detection module is arranged, therefore, the state detection module determines whether to restart the timing moduleor not according to the state of the timing module after receiving the initial pulse signal each time, the situation that the timing module is restarted according to the initial pulse signal before photons return when the target object is far can be avoided, a distance value with a large error is obtained, and the measurement accuracy is improved.

Description

technical field [0001] The invention relates to the technical field of electronic equipment, in particular to a laser distance measuring device, method and electronic equipment. Background technique [0002] Laser ranging is widely used in electronic equipment to measure the distance between the target object and the electronic equipment, and assist the electronic equipment to realize various functions to meet the different needs of users. [0003] The principle of laser ranging is that the photon is sent to the target object through the transmitting module, and the photon is reflected by the target object and received by the receiving module, and the difference between the time point corresponding to the received photon and the time point corresponding to the emitted photon is used as the flight time of the photon , taking half of the product of the speed of light and the flight time as the distance between the target object and the electronic device. In order to obtain a ...

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a laser ranging device, method and electronic equipment, which can solve the problem of inaccurate measurement distance when the target object is far away in the existing laser ranging process

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