JPS649389A - Ultrasonic distance measuring device - Google Patents

Ultrasonic distance measuring device

Info

Publication number
JPS649389A
JPS649389A JP16497687A JP16497687A JPS649389A JP S649389 A JPS649389 A JP S649389A JP 16497687 A JP16497687 A JP 16497687A JP 16497687 A JP16497687 A JP 16497687A JP S649389 A JPS649389 A JP S649389A
Authority
JP
Japan
Prior art keywords
receiving
level
distance measuring
ground
detecting
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
JP16497687A
Other languages
Japanese (ja)
Inventor
Katsuya Usui
Suezo Ueda
Original Assignee
Kubota 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 Kubota Ltd filed Critical Kubota Ltd
Priority to JP16497687A priority Critical patent/JPS649389A/en
Publication of JPS649389A publication Critical patent/JPS649389A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To enable exact distance measuring by deciding whether or not the levels of receiving signals corresponding to respective thresholds of predeterminated plural stages are high and detecting the receiving time at which the highest levels of the receiving signals are received. CONSTITUTION:A distance measuring device is composed of a sensor body 4 attached to a reaping part and a control device H as main parts. The body 4 is composed of an transmitter 4a by which a ultrasonic wave is intermittently transmitted to the ground surface as a measuring object and a receiver 4b by which the reflected ultrasonic wave from the ground surface is received and a receiving signal P of the level according to the strength thereof is output. The control device H gives a transmitting instruction to the transmitter 4a at prescribed intervals and measures the time of reflecting ultrasonic wave transmitting to receiving in accordance with the level of the receiving signal P of the receiver 4b as a distance up to the ground surface, and a receiving detecting means 100 decides whether or not the level of the receiving signal P corresponding to respective thresholds V1-Vn of predeterminated plural stages is high and is formed of detecting the time at which the highest level of the receiving signal P is received.
JP16497687A 1987-06-30 1987-06-30 Ultrasonic distance measuring device Pending JPS649389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16497687A JPS649389A (en) 1987-06-30 1987-06-30 Ultrasonic distance measuring device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16497687A JPS649389A (en) 1987-06-30 1987-06-30 Ultrasonic distance measuring device

Publications (1)

Publication Number Publication Date
JPS649389A true JPS649389A (en) 1989-01-12

Family

ID=15803466

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16497687A Pending JPS649389A (en) 1987-06-30 1987-06-30 Ultrasonic distance measuring device

Country Status (1)

Country Link
JP (1) JPS649389A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104569956A (en) * 2013-10-12 2015-04-29 中兴通讯股份有限公司 Distance measuring method and device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104569956A (en) * 2013-10-12 2015-04-29 中兴通讯股份有限公司 Distance measuring method and device
CN104569956B (en) * 2013-10-12 2018-05-04 中兴通讯股份有限公司 A kind of distance measuring method and equipment

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