JPS6488174A - Distance measurement system - Google Patents

Distance measurement system

Info

Publication number
JPS6488174A
JPS6488174A JP24358987A JP24358987A JPS6488174A JP S6488174 A JPS6488174 A JP S6488174A JP 24358987 A JP24358987 A JP 24358987A JP 24358987 A JP24358987 A JP 24358987A JP S6488174 A JPS6488174 A JP S6488174A
Authority
JP
Japan
Prior art keywords
radio wave
side device
wave
counter
distance
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
JP24358987A
Other languages
Japanese (ja)
Inventor
Tadashi Yamanaka
Hiroshi Kokubo
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP24358987A priority Critical patent/JPS6488174A/en
Publication of JPS6488174A publication Critical patent/JPS6488174A/en
Pending legal-status Critical Current

Links

Landscapes

  • Radar Systems Or Details Thereof (AREA)
  • Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)

Abstract

PURPOSE:To accurately measure the distance between two points by sending a radio wave and acoustic wave from a transmission-side device at the same time and measuring the time difference between the radio wave and acoustic wave received by a reception-side device. CONSTITUTION:The transmission-side device 12 is directed to the reception-side device 24 to send the radio wave and acoustic wave at the same time. The device 24 inputs the radio wave to a time difference counter 44 through a radio wave detecting circuit 40 first. The counter 44 is triggered with this signal to begin count clock pulses inputted from a clock pulse generator 45. Then when the ultrasonic wave is inputted to the counter 44 through an ultrasonic wave detecting circuit 42, the current counted value is outputted and displayed as a distance on a distance display part 25 through a display circuit 47. A temperature compensating circuit 48 controls pulse intervals of the clock pulses to compensate temperature variation in propagation speed. Consequently, the influence of a reflecting body is eliminated and a measurement is accurately taken.
JP24358987A 1987-09-30 1987-09-30 Distance measurement system Pending JPS6488174A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24358987A JPS6488174A (en) 1987-09-30 1987-09-30 Distance measurement system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24358987A JPS6488174A (en) 1987-09-30 1987-09-30 Distance measurement system

Publications (1)

Publication Number Publication Date
JPS6488174A true JPS6488174A (en) 1989-04-03

Family

ID=17106067

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24358987A Pending JPS6488174A (en) 1987-09-30 1987-09-30 Distance measurement system

Country Status (1)

Country Link
JP (1) JPS6488174A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003003625A3 (en) * 2001-06-29 2003-10-16 Nokia Corp Wireless communication device and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6222091A (en) * 1985-07-22 1987-01-30 Nippon Kooteingu Kk Distance measuring method
JPS6295479A (en) * 1985-10-22 1987-05-01 Fuji Electric Co Ltd Sound speed compensating method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6222091A (en) * 1985-07-22 1987-01-30 Nippon Kooteingu Kk Distance measuring method
JPS6295479A (en) * 1985-10-22 1987-05-01 Fuji Electric Co Ltd Sound speed compensating method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003003625A3 (en) * 2001-06-29 2003-10-16 Nokia Corp Wireless communication device and method

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