JPS5374899A - Ultrasonic alarm - Google Patents

Ultrasonic alarm

Info

Publication number
JPS5374899A
JPS5374899A JP15406976A JP15406976A JPS5374899A JP S5374899 A JPS5374899 A JP S5374899A JP 15406976 A JP15406976 A JP 15406976A JP 15406976 A JP15406976 A JP 15406976A JP S5374899 A JPS5374899 A JP S5374899A
Authority
JP
Japan
Prior art keywords
ultrasonic alarm
fixed
alarm
ultrasonic
phase
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
JP15406976A
Other languages
English (en)
Inventor
Hiroshi Ohashi
Hironobu Inoue
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Electric Works Co Ltd
Original Assignee
Matsushita Electric Works Ltd
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 by Matsushita Electric Works Ltd filed Critical Matsushita Electric Works Ltd
Priority to JP15406976A priority Critical patent/JPS5374899A/ja
Publication of JPS5374899A publication Critical patent/JPS5374899A/ja
Pending legal-status Critical Current

Links

Landscapes

  • Burglar Alarm Systems (AREA)
  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
JP15406976A 1976-12-15 1976-12-15 Ultrasonic alarm Pending JPS5374899A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15406976A JPS5374899A (en) 1976-12-15 1976-12-15 Ultrasonic alarm

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15406976A JPS5374899A (en) 1976-12-15 1976-12-15 Ultrasonic alarm

Publications (1)

Publication Number Publication Date
JPS5374899A true JPS5374899A (en) 1978-07-03

Family

ID=15576203

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15406976A Pending JPS5374899A (en) 1976-12-15 1976-12-15 Ultrasonic alarm

Country Status (1)

Country Link
JP (1) JPS5374899A (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57161673A (en) * 1981-03-31 1982-10-05 Matsushita Electric Works Ltd Ultrasonic wave pulse doppler type sensor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57161673A (en) * 1981-03-31 1982-10-05 Matsushita Electric Works Ltd Ultrasonic wave pulse doppler type sensor

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