{"title":"一种用于远距离飞行时间照相机的高背景光减法电路","authors":"C. Anand, K. Jainwal, M. Sarkar","doi":"10.1109/APCCAS.2016.7804010","DOIUrl":null,"url":null,"abstract":"In this paper, a background light subtraction circuit is presented for a long range time-of-flight camera in outdoor applications. A low (de)modulation frequency is used for long range estimation, which saturates the photodiode due to integration of high-intensity background light. Therefore, long range cameras are generally limited to indoor applications. In this work, a circuit is proposed to subtract up to 120 klx BGL for 1.07–9.65 m distance. A (de)modulation frequency of 2.33 MHz with 33 % duty-cycle is used. The measurement results show a range resolution of 1.49 cm and 65 cm for 1.07 m and 9.65 m distance, respectively at 120 klx background light. The circuit is fabricated and characterized in UMC 180 nm technology.","PeriodicalId":6495,"journal":{"name":"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","volume":"125 1","pages":"487-490"},"PeriodicalIF":0.0000,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":"{\"title\":\"A high background light subtraction circuit for long range time-of-flight cameras\",\"authors\":\"C. Anand, K. Jainwal, M. Sarkar\",\"doi\":\"10.1109/APCCAS.2016.7804010\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In this paper, a background light subtraction circuit is presented for a long range time-of-flight camera in outdoor applications. A low (de)modulation frequency is used for long range estimation, which saturates the photodiode due to integration of high-intensity background light. Therefore, long range cameras are generally limited to indoor applications. In this work, a circuit is proposed to subtract up to 120 klx BGL for 1.07–9.65 m distance. A (de)modulation frequency of 2.33 MHz with 33 % duty-cycle is used. The measurement results show a range resolution of 1.49 cm and 65 cm for 1.07 m and 9.65 m distance, respectively at 120 klx background light. The circuit is fabricated and characterized in UMC 180 nm technology.\",\"PeriodicalId\":6495,\"journal\":{\"name\":\"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)\",\"volume\":\"125 1\",\"pages\":\"487-490\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2016-10-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"3\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1109/APCCAS.2016.7804010\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCCAS.2016.7804010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A high background light subtraction circuit for long range time-of-flight cameras
In this paper, a background light subtraction circuit is presented for a long range time-of-flight camera in outdoor applications. A low (de)modulation frequency is used for long range estimation, which saturates the photodiode due to integration of high-intensity background light. Therefore, long range cameras are generally limited to indoor applications. In this work, a circuit is proposed to subtract up to 120 klx BGL for 1.07–9.65 m distance. A (de)modulation frequency of 2.33 MHz with 33 % duty-cycle is used. The measurement results show a range resolution of 1.49 cm and 65 cm for 1.07 m and 9.65 m distance, respectively at 120 klx background light. The circuit is fabricated and characterized in UMC 180 nm technology.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
