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1. WO2020061970 - RANGING DEVICE AND MOBILE PLATFORM

Publication Number WO/2020/061970
Publication Date 02.04.2020
International Application No. PCT/CN2018/108153
International Filing Date 27.09.2018
IPC
G01S 7/486 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
483Details of pulse systems
486Receivers
G01S 7/489 2006.01
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/, G01S15/, G01S17/127
48of systems according to group G01S17/58
483Details of pulse systems
486Receivers
489Gain of receiver varied automatically during pulse-recurrence period
H03G 11/02 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
11Limiting amplitude; Limiting rate of change of amplitude
02by means of diodes
H03G 3/00 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers
CPC
G01S 7/486
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
483Details of pulse systems
486Receivers
G01S 7/489
GPHYSICS
01MEASURING; TESTING
SRADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
48of systems according to group G01S17/00
483Details of pulse systems
486Receivers
489Gain of receiver varied automatically during pulse-recurrence period
H03G 11/02
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
11Limiting amplitude; Limiting rate of change of amplitude ; ; Clipping in general
02by means of diodes
H03G 3/00
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
GCONTROL OF AMPLIFICATION
3Gain control in amplifiers or frequency changers ; without distortion of the input signal
Applicants
  • 深圳市大疆创新科技有限公司 SZ DJI TECHNOLOGY CO., LTD. [CN]/[CN]
Inventors
  • 刘祥 LIU, Xiang
  • 洪小平 HONG, Xiaoping
Agents
  • 北京市磐华律师事务所 P. C. & ASSOCIATES
Priority Data
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) RANGING DEVICE AND MOBILE PLATFORM
(FR) DISPOSITIF DE TÉLÉMÉTRIE ET PLATEFORME MOBILE
(ZH) 一种测距装置及移动平台
Abstract
(EN)
A ranging device (100) comprises: a transmission circuit (110), used to transmit a light pulse sequence; a photoelectric conversion circuit (120), used to sequentially receive light pulse signals acquired by an object reflecting multiple light pulses in the light pulse sequence transmitted by the transmission circuit, and to sequentially convert the multiple received light pulse signals into electrical pulse signals; and an amplification circuit, comprising an operational amplifier (21) and a clamping circuit. The clamping circuit is connected to an input end and an output end of the operational amplifier (21), and is for sequentially clamping the multiple electrical pulse signals. The multiple clamped electrical pulse signals are sequentially input to a circuit of the operational amplifier (21) for amplification. The clamping circuit is used to cause the magnitudes of the multiple electrical pulse signals to be within a certain range, such that a reference voltage of the clamping circuit of the amplification circuit is dynamically adjusted according to energy of the input signal, thereby achieving a better clamping effect, and preventing saturated output of the circuit of the operational amplifier (21).
(FR)
L'invention concerne un dispositif de télémétrie (100) comprenant : un circuit de transmission (110), utilisé pour transmettre une séquence d'impulsions lumineuses ; un circuit de conversion photoélectrique (120), utilisé pour recevoir séquentiellement des signaux d'impulsion de lumière acquis par un objet reflétant de multiples impulsions de lumière dans la séquence d'impulsions de lumière transmise par le circuit de transmission, et permettant de convertir séquentiellement les multiples signaux d'impulsion de lumière reçus en signaux d'impulsion électrique ; et un circuit d'amplification, comprenant un amplificateur opérationnel (21) et un circuit de calage. Le circuit de calage est connecté à une extrémité d'entrée et à une extrémité de sortie de l'amplificateur opérationnel (21), et sert à caler séquentiellement les multiples signaux d'impulsions électriques. Les multiples signaux d'impulsions électriques calés sont séquentiellement entrés dans un circuit de l'amplificateur opérationnel (21) pour amplification. Le circuit de calage est utilisé pour amener les amplitudes des multiples signaux d'impulsions électriques à se s'inscrire dans une certaine plage, de telle sorte qu'une tension de référence du circuit de calage du circuit d'amplification soit réglée dynamiquement en fonction de l'énergie du signal d'entrée, ce qui permet d'obtenir un meilleur effet de calage, et d'empêcher une sortie saturée du circuit de l'amplificateur opérationnel (21).
(ZH)
一种测距装置(100),包括:发射电路(110),用于出射光脉冲序列;光电转换电路(120),用于依次接收该发射电路出射的光脉冲序列中的多个光脉冲分别经物体反射回的光脉冲信号,以及将接收的多个光脉冲信号依次转换成电脉冲信号;放大电路,包括运算放大器(21)和钳位电路;该钳位电路分别与运算放大器(21)的输入端和输出端连接,用于依次对该多个电脉冲信号进行钳位,该多个电脉冲信号经过钳位后依次输入至运算放大器(21)电路进行放大,其中,该钳位电路用于使得该多个电脉冲信号的大小位于一定范围内,从而可以实现放大电路的钳位电路的参考电压根据输入信号的能量进行动态调整,起到更强的钳制作用,以防止该运算放大器(21)电路饱和输出。
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