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TDC-based false target supplement system

A false target and pin technology, applied in the field of time-to-digital converters, can solve problems such as the inability to achieve accurate measurement of single target and multiple target measurements, the inability of TDC chips to respond, etc., to achieve fast signal response time, stable signal output, The effect of reducing errors

Pending Publication Date: 2022-07-01
BEIJING ORIENTAL SHARP LASER TECH
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AI Technical Summary

Problems solved by technology

However, in the multi-target measurement mode, if only a single target is returned, the TDC chip cannot respond, and accurate measurement of single and multiple targets cannot be achieved

Method used

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  • TDC-based false target supplement system

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Embodiment Construction

[0029] In order to make those skilled in the art better understand the technical solutions of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0030] Embodiments of the present invention provide a TDC-based false target supplementation system, such as figure 1 As shown, it includes a photoelectric acquisition circuit module 1, which is used to send sampling signals to the logic gate circuit module and the TDC circuit module;

[0031] The timer circuit module 2 is used to send a continuous pulse signal to the logic gate circuit module; the pulse signal sent by the timer circuit module is a square wave.

[0032] The logic gate circuit module 3 is used to supplement the target quantity of the return signal by using the sampling signal and the pulse signal, and then send the supplemented signal to the TDC circuit module; the logic gate circuit module adopts an OR gate, and uses th...

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Abstract

The invention provides a TDC-based false target supplement system, and the system comprises a photoelectric collection circuit module which is used for transmitting sampling signals to a logic gate circuit module and a TDC circuit module; the timer circuit module is used for sending continuous pulse signals to the logic gate circuit module; the logic gate circuit module is used for supplementing the target number of the echo signals by using the sampling signals and the pulse signals, and then sending the supplemented echo signals to the TDC circuit module; and the TDC circuit module is used for receiving signals sent by the logic gate circuit module and the photoelectric acquisition circuit module. According to the invention, under the condition that a real target is not influenced, the echo signal returned by the target is supplemented, so that the TDC chip can acquire the set target number, and multi-target distance calculation is carried out.

Description

technical field [0001] The invention belongs to the field of time-to-digital converters (TDC), and in particular relates to a false target supplement system based on TDC. Background technique [0002] The method of using TDC chip to obtain target distance information is more and more widely used, especially in the field of ranging, the light-emitting time is used as the start of time calculation, the echo signal of the first target is used as the stop time, and the two The time difference between the moments is the flight time of light, and the distance can be obtained according to the flight time. This method is widely used in the field of ranging. [0003] Patents 201420829174.4 and 20192007354.0 provide application solutions in connection methods, ranging methods, and error calculation. However, this patent is mainly aimed at the TDC chip in the multi-target measurement mode, the single target is supplemented with multi-target, and does not affect the multi-target rangi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S17/08G01S7/48
CPCG01S17/08G01S7/48
Inventor 唐瑛邓明发
Owner BEIJING ORIENTAL SHARP LASER TECH
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