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JPS57197926A - Ultrasonic sense switch device - Google Patents

Ultrasonic sense switch device

Info

Publication number
JPS57197926A
JPS57197926A JP8366481A JP8366481A JPS57197926A JP S57197926 A JPS57197926 A JP S57197926A JP 8366481 A JP8366481 A JP 8366481A JP 8366481 A JP8366481 A JP 8366481A JP S57197926 A JPS57197926 A JP S57197926A
Authority
JP
Japan
Prior art keywords
foot
ultrasonic
warmer frame
wave
comparator
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
JP8366481A
Other languages
Japanese (ja)
Other versions
JPH0226824B2 (en
Inventor
Takeshi Kuriyama
Takashi Ikehara
Akira Kurita
Takashi Miyahara
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.)
Sharp Corp
Original Assignee
Sharp Corp
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 Sharp Corp filed Critical Sharp Corp
Priority to JP8366481A priority Critical patent/JPS57197926A/en
Publication of JPS57197926A publication Critical patent/JPS57197926A/en
Publication of JPH0226824B2 publication Critical patent/JPH0226824B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/945—Proximity switches

Landscapes

  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
  • Burglar Alarm Systems (AREA)
  • Electronic Switches (AREA)

Abstract

PURPOSE:To detect a moving body over a wide range by receiving a scattered and radiated ultrasonic wave, and discriminating it by comparison with a reference voltage. CONSTITUTION:The ultrasonic wave from an ultrasonic-wave transmitter 1 driven by a driving circuit 3 is scattered and radiated by a horn 2 for scattering ultrasonic waves. When there is some object in a foot-warmer frame, a standing wave is generated and received by a receiver 4. The output of the receiver 4 is passed through an amplifier 6 and a detector 7, and differentiated by a resistance R1 and a capacitor C and then applied to a comparator 8. The output of the comparator 8 turns on a switching transistor 10 through a mono- stable circuit 9 to connect a power source 13 to the heater 14 in the foot-warmer frame. When the body in the foot-warmer frame 5 moves, the standing wave varies, so the power source of the foot-warmer frame 5 is turned on.
JP8366481A 1981-05-30 1981-05-30 Ultrasonic sense switch device Granted JPS57197926A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8366481A JPS57197926A (en) 1981-05-30 1981-05-30 Ultrasonic sense switch device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8366481A JPS57197926A (en) 1981-05-30 1981-05-30 Ultrasonic sense switch device

Publications (2)

Publication Number Publication Date
JPS57197926A true JPS57197926A (en) 1982-12-04
JPH0226824B2 JPH0226824B2 (en) 1990-06-13

Family

ID=13808720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8366481A Granted JPS57197926A (en) 1981-05-30 1981-05-30 Ultrasonic sense switch device

Country Status (1)

Country Link
JP (1) JPS57197926A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517590A (en) * 2009-02-11 2012-08-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Motion detection system and method with null points

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152146A (en) * 1976-06-14 1977-12-17 Matsushita Electric Works Ltd Multistage amplifier circuit
JPS5610593A (en) * 1979-06-28 1981-02-03 Chevron Res Lubricant oil composition containing molybdenum compound and production thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52152146A (en) * 1976-06-14 1977-12-17 Matsushita Electric Works Ltd Multistage amplifier circuit
JPS5610593A (en) * 1979-06-28 1981-02-03 Chevron Res Lubricant oil composition containing molybdenum compound and production thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012517590A (en) * 2009-02-11 2012-08-02 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Motion detection system and method with null points

Also Published As

Publication number Publication date
JPH0226824B2 (en) 1990-06-13

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