JPH0247590U - - Google Patents

Info

Publication number
JPH0247590U
JPH0247590U JP12650688U JP12650688U JPH0247590U JP H0247590 U JPH0247590 U JP H0247590U JP 12650688 U JP12650688 U JP 12650688U JP 12650688 U JP12650688 U JP 12650688U JP H0247590 U JPH0247590 U JP H0247590U
Authority
JP
Japan
Prior art keywords
room
output
threshold value
signal
frequency shift
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.)
Pending
Application number
JP12650688U
Other languages
English (en)
Japanese (ja)
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
Application filed filed Critical
Priority to JP12650688U priority Critical patent/JPH0247590U/ja
Publication of JPH0247590U publication Critical patent/JPH0247590U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP12650688U 1988-09-27 1988-09-27 Pending JPH0247590U (en:Method)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12650688U JPH0247590U (en:Method) 1988-09-27 1988-09-27

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12650688U JPH0247590U (en:Method) 1988-09-27 1988-09-27

Publications (1)

Publication Number Publication Date
JPH0247590U true JPH0247590U (en:Method) 1990-03-30

Family

ID=31378089

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12650688U Pending JPH0247590U (en:Method) 1988-09-27 1988-09-27

Country Status (1)

Country Link
JP (1) JPH0247590U (en:Method)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842187A (en:Method) * 1971-10-08 1973-06-19
JPS59202083A (ja) * 1983-04-30 1984-11-15 Nippon Arefu:Kk 超音波警報装置
JPS61246686A (ja) * 1985-04-24 1986-11-01 Matsushita Electric Works Ltd 移動物体検知装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4842187A (en:Method) * 1971-10-08 1973-06-19
JPS59202083A (ja) * 1983-04-30 1984-11-15 Nippon Arefu:Kk 超音波警報装置
JPS61246686A (ja) * 1985-04-24 1986-11-01 Matsushita Electric Works Ltd 移動物体検知装置

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