Distance measurement method, system and device
A technology for distance measurement and processing equipment, applied in the field of distance measurement, can solve problems such as difficulty in determining the distance of the target to be detected, and achieve the effect of improving measurement accuracy
Pending Publication Date: 2021-01-22
AOCHENG INFORMATION TECH (SHANGHAI) CO LTD
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[0003] However, in the actual ranging process, multiple peak positions may appear in the histogram or the determined peak position may also be generated by other interference signals, resulting in the time-of-flight determined based on the peak position not being the photon from emission to reception. Accurate time-of-flight, making it difficult to determine the distance to the target to be detected
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[0058] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments without these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
[0059] It should be understood that when used in this specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude one or more other Presence or addition of features, wholes, steps, operations, elements, components and / or collections thereof.
[0060] It should...
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The invention is suitable for the technical field of distance measurement, and provides a distance measurement method, which comprises the steps of obtaining a photon emission signal and a photon reflection signal, acquiring flight time of photons from emission to reception according to the photon emission signal and the photon reflection signal, and generating a target histogram according to theflight time, obtaining an initial peak value position in the target histogram, if the initial peak value position meets a preset screening condition, judging that the initial peak value position is areal peak value position, and acquiring time information corresponding to the real peak position, and calculating distance information of a to-be-measured target according to the time information. According to the scheme, the processing equipment judges the initial peak value position, judges whether any initial peak value position in the target histogram is a real peak value position or not, eliminates noise data, calculates the distance information of the target based on the real peak value position, and effectively improves the measurement precision of the system.
Description
technical field [0001] The present application belongs to the technical field of distance measurement, and in particular relates to a distance measurement method, system and equipment. Background technique [0002] Using the principle of time of flight (TOF, Time of Flight) can measure the distance of the target to obtain a depth image containing the depth value of the target, and the distance measurement system based on the principle of time of flight has been widely used in consumer electronics, unmanned vehicles, etc. field. When calculating the distance of the target to be detected, the transmitter emits a pulsed beam to irradiate the target field of view and the collector collects the reflected beam, calculates the time-of-flight of the beam from emission to reflection, and uses the time-of-flight as the address for accessing the corresponding memory. Multiple measurements are input into the memory to construct a histogram, the peak position in the histogram is further...
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Login to View More IPC IPC(8): G01S17/10G01S7/4865
CPCG01S17/10G01S7/4865
Inventor 金宇梅小露
Owner AOCHENG INFORMATION TECH (SHANGHAI) CO LTD