KR102019382B1 - 거리 검출 센서 및 그것의 동작 방법 - Google Patents
거리 검출 센서 및 그것의 동작 방법 Download PDFInfo
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/32—Systems determining position data of a target for measuring distance only using transmission of continuous waves, whether amplitude-, frequency-, or phase-modulated, or unmodulated
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/46—Indirect determination of position data
- G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D18/00—Testing or calibrating apparatus or arrangements provided for in groups G01D1/00 - G01D15/00
- G01D18/002—Automatic recalibration
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- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/02—Means for indicating or recording specially adapted for thermometers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
- G01S17/10—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves
- G01S17/14—Systems determining position data of a target for measuring distance only using transmission of interrupted, pulse-modulated waves wherein a voltage or current pulse is initiated and terminated in accordance with the pulse transmission and echo reception respectively, e.g. using counters
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/4808—Evaluating distance, position or velocity data
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
- G01S7/4861—Circuits for detection, sampling, integration or read-out
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/483—Details of pulse systems
- G01S7/486—Receivers
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO 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
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/48—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S17/00
- G01S7/497—Means for monitoring or calibrating
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/45—Differential amplifiers
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- Electromagnetism (AREA)
- Power Engineering (AREA)
- Optical Radar Systems And Details Thereof (AREA)
Abstract
Description
도 1은 본 발명의 실시 예에 따른 거리 검출 센서를 예시적으로 보여주는 블록도이다.
도 2는 본 발명의 실시 예에 따른 시간 디지털 변환기에서 TOF를 감지하는 방법을 예시적으로 보여주는 타이밍도 이다.
도3는 본 발명의 실시 예에 따른 비교기 통과 전과 통과 후의 타이밍을 예시적으로 보여주는 도면이다.
도 4는 본 발명의 실시 예에 따른 디지털 신호 처리기에서 검출신호의 피크 시간을 계산하는 과정을 보여주는 도면이다.
도 5는 본 발명의 실시 예에 따른 거리 검출 센서의 동작 방법을 예시적으로 보여주는 도면이다.
110: 전류 전압 변환기
120: 증폭기
130: 비교기
140: 기준값 선택기
150: 타임 디지털 변환기
160: 온도 센서
170: 디지털 신호 처리기
Claims (14)
- 타겟으로부터 반사된 검출신호에 대응하는 전류를 전압으로 변환하는 전류 전압 변환기;
상기 변환된 전압을 증폭하는 증폭기;
상기 증폭기의 출력값과 기준값을 비교함으로써 수신 펄스를 발생하는 비교기;
복수의 기준값들 중에서 어느 하나를 상기 기준값으로 선택하는 기준값 선택기; 및
상기 비교기로부터 출력된 수신 펄스에 응답하여 TOF(time-of-flight) 시간을 계산하는 시간 디지털 변환기를 포함하고,
상기 기준값 선택기는 연속적인 수신 펄스들의 각각에 대응하는 서로 다른 기준값들을 연속적으로 변경하되, 이전 수신 펄스의 폴링 시점에서 기준값을 변경하는 거리 검출 센서. - 제 1 항에 있어서,
상기 검출신호를 발생하는 감광 소자를 더 포함하는 거리 검출 센서. - 제 1 항에 있어서,
상기 전류 전압 변환기는 트랜스임피던스 증폭기(trans impedance amplifier)를 포함하는 거리 검출 센서. - 제 1 항에 있어서,
상기 전류 전압 변환기의 입력단과 출력단 사이에 병렬 연결된 캐패시터 및 저항을 더 포함하는 거리 검출 센서. - 제 1 항에 있어서,
상기 시간 디지털 변환기는 송신 펄스와 수신 펄스 사이를 카운팅하는 카운터를 포함하는 거리 검출 센서. - 제 5 항에 있어서,
상기 카운터는 상기 송신 펄스의 라이징 시점부터 상기 수신 펄스의 라이징 시점까지를 카운팅하는 거리 검출 센서. - 삭제
- 제 1 항에 있어서,
상기 연속적인 수신 펄스들에 대응하는 연속적인 송신 펄스들이 상기 타겟으로 전송되고,
상기 연속적인 송신 펄스들은 3개 이상인 거리 검출 센서. - 제 1 항에 있어서,
상기 연속적인 송신 펄스들의 각각에 대응하는 TOF 시간들을 계산 및 저장하는 디지털 신호 처리기를 더 포함하는 거리 검출 센서. - 제 9 항에 있어서,
상기 디지털 신호 처리기는, 상기 TOF 시간들로부터 피크 시간을 계산하고, 상기 피크 시간을 이용하여 타겟까지의 거리를 계산하는 거리 검출 센서. - 제 9 항에 있어서,
온도를 측정하는 온도 센서를 더 포함하고,
상기 디지털 신호 처리기는 상기 온도를 이용하여 상기 거리를 보상하는 거리 검출 센서. - 거리 검출 센서의 동작 방법에 있어서:
연속적인 송신 펄스들을 타겟으로 전송하는 단계;
상기 송신 펄스들의 각각에 대응하는 기준값을 변경하는 단계;
상기 변경된 기준값에 따라 상기 송신 펄스들의 각각에 대응하는 신호를 연속적으로 수신하는 단계;
상기 송신 펄스들의 각각에 대응하는 수신된 수신 펄스들로부터 TOF(time-of-flight) 피크 시간을 계산하는 단계; 및
상기 TOF 피크 시간으로부터 상기 타겟까지의 거리를 계산하는 단계를 포함하고,
상기 기준값을 변경하는 단계는, 이전 수신 펄스의 폴링 시점에서 기준값을 변경하는 것을 특징으로 하는 방법. - 제 12 항에 있어서,
상기 송신 펄스들의 각각에 대응하는 검출신호들을 감광 소자로부터 수신하는 단계;
상기 수신된 검출신호들의 각각에 대응하는 전류를 전압으로 변환하는 단계; 및
상기 변환된 전압들을 증폭시키는 단계를 더 포함하는 방법. - 제 12 항에 있어서,
온도를 측정하는 단계; 및
상기 측정된 온도에 따라 상기 거리를 보상하는 단계를 더 포함하는 방법.
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KR1020170127671A KR102019382B1 (ko) | 2017-09-29 | 2017-09-29 | 거리 검출 센서 및 그것의 동작 방법 |
US16/033,737 US11255968B2 (en) | 2017-09-29 | 2018-07-12 | Distance detection sensor and operating method thereof |
DE102018117259.1A DE102018117259A1 (de) | 2017-09-29 | 2018-07-17 | Abstandserfassungssensor und verfahren zum betreiben eines derartigen sensors |
CN201810833703.0A CN109581401B (zh) | 2017-09-29 | 2018-07-26 | 距离检测传感器及其工作方法 |
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DE102019207741A1 (de) * | 2019-05-27 | 2020-12-03 | Infineon Technologies Ag | Ein LIDAR-System, ein Verfahren für ein LIDAR-System und ein Empfänger für ein LIDAR-System mit ersten und zweiten Umwandlungselementen |
KR102242503B1 (ko) * | 2020-01-17 | 2021-04-19 | 한국항공대학교산학협력단 | 고정밀 옵셋 보정 비교기 및 이를 포함하는 라이다 시스템 |
KR102575734B1 (ko) * | 2021-02-25 | 2023-09-08 | 현대자동차주식회사 | 광검출기의 신호레벨 추정 장치 및 그 방법 |
KR102610763B1 (ko) * | 2021-02-26 | 2023-12-07 | 현대자동차주식회사 | 라이다 잡음 제거 장치 및 그 방법 |
CN118519125B (zh) * | 2024-07-19 | 2024-12-03 | 惟太科技(苏州)有限公司 | 飞行时间光电接收系统及光电接收信号处理方法 |
CN118971847A (zh) * | 2024-10-16 | 2024-11-15 | 杭州宇称电子技术有限公司 | 多阈值比较tdc集成电路、控制方法及其激光雷达 |
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