JPH0449890U - - Google Patents

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Publication number
JPH0449890U
JPH0449890U JP9154190U JP9154190U JPH0449890U JP H0449890 U JPH0449890 U JP H0449890U JP 9154190 U JP9154190 U JP 9154190U JP 9154190 U JP9154190 U JP 9154190U JP H0449890 U JPH0449890 U JP H0449890U
Authority
JP
Japan
Prior art keywords
circuit
laser
drive
measuring device
stc
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP9154190U
Other languages
Japanese (ja)
Other versions
JP2520410Y2 (en
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=31827277&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=JPH0449890(U) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed filed Critical
Priority to JP1990091541U priority Critical patent/JP2520410Y2/en
Publication of JPH0449890U publication Critical patent/JPH0449890U/ja
Application granted granted Critical
Publication of JP2520410Y2 publication Critical patent/JP2520410Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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  • Optical Radar Systems And Details Thereof (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案にかかる測距装置の一具体例を
示すブロツクダイアグラムである。第２図は従来
に於ける測距装置の例を示すブロツクダイアグラ
ムである。第３図は変化しきい値信号の波形と受
信信号のノイズとの関係を示す図である。第４図
は本考案に於ける各構成要部の波形を示す図であ
る。 １……レーザダイオード駆動回路、２……レー
ザダイオード、３……Ｏ．Ｓ．Ｍ．回路、４……
コンデンサ、５，７……可変抵抗、６……ＦＥＴ
トランジスタ、８……コンパレータ、９……受信
回路、１０……微分回路、２０……マイクロコン
ピユータ。 FIG. 1 is a block diagram showing a specific example of a distance measuring device according to the present invention. FIG. 2 is a block diagram showing an example of a conventional distance measuring device. FIG. 3 is a diagram showing the relationship between the waveform of the changing threshold signal and the noise of the received signal. FIG. 4 is a diagram showing waveforms of each main component in the present invention. 1... Laser diode drive circuit, 2... Laser diode, 3... O. S. M. Circuit, 4...
Capacitor, 5, 7...variable resistor, 6...FET
Transistor, 8...Comparator, 9...Receiving circuit, 10...Differentiating circuit, 20...Microcomputer.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] レーザ送受信信号の時間差により、ターゲツト
迄の距離を測定するに際し、該レーザを送信直後
の所定の時間内に発生するノイズをカツトする為
、しきい値を変化させるしきい値信号を発生させ
るＳＴＣ回路（センシテイビテイータイムコント
ロール回路）を用いた測距装置に於いて、該レー
ザ信号発生回路の駆動回路を駆動させるトリガー
回路を設け、該トリガー回路の出力を該ＳＴＣ回
路の駆動回路に入力した事を特徴とする測距装置
。 An STC circuit that generates a threshold signal that changes the threshold value in order to cut out noise that occurs within a predetermined time immediately after transmitting the laser when measuring the distance to the target based on the time difference between the laser transmission and reception signals. (Sensitivity Time Control Circuit) In a distance measuring device using a sensitivity time control circuit, a trigger circuit is provided to drive the drive circuit of the laser signal generation circuit, and the output of the trigger circuit is input to the drive circuit of the STC circuit. A distance measuring device featuring:
JP1990091541U 1990-09-03 1990-09-03 Ranging device Expired - Lifetime JP2520410Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1990091541U JP2520410Y2 (en) 1990-09-03 1990-09-03 Ranging device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1990091541U JP2520410Y2 (en) 1990-09-03 1990-09-03 Ranging device

Publications (2)

Publication Number Publication Date
JPH0449890U true JPH0449890U (en) 1992-04-27
JP2520410Y2 JP2520410Y2 (en) 1996-12-18

Family

ID=31827277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1990091541U Expired - Lifetime JP2520410Y2 (en) 1990-09-03 1990-09-03 Ranging device

Country Status (1)

Country Link
JP (1) JP2520410Y2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005024536A (en) * 2003-07-01 2005-01-27 Ashu Kogaku Kofun Yugenkoshi Method and system for light signal reception
JP2014059223A (en) * 2012-09-18 2014-04-03 Denso Corp Optical radar device

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184985A (en) * 1980-10-07 1982-11-13 Nec Corp Photo-detecting circuit for laser distance measuring device
JPS5987383A (en) * 1982-11-11 1984-05-19 Nec Corp Light receiving circuit of laser range finder
JPS59142488A (en) * 1983-02-02 1984-08-15 Nissan Motor Co Ltd Optical radar equipment
JPH01197684A (en) * 1988-02-02 1989-08-09 Fujitsu Ten Ltd Distance measuring equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57184985A (en) * 1980-10-07 1982-11-13 Nec Corp Photo-detecting circuit for laser distance measuring device
JPS5987383A (en) * 1982-11-11 1984-05-19 Nec Corp Light receiving circuit of laser range finder
JPS59142488A (en) * 1983-02-02 1984-08-15 Nissan Motor Co Ltd Optical radar equipment
JPH01197684A (en) * 1988-02-02 1989-08-09 Fujitsu Ten Ltd Distance measuring equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005024536A (en) * 2003-07-01 2005-01-27 Ashu Kogaku Kofun Yugenkoshi Method and system for light signal reception
JP2014059223A (en) * 2012-09-18 2014-04-03 Denso Corp Optical radar device

Also Published As

Publication number Publication date
JP2520410Y2 (en) 1996-12-18

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