JPS6483177A - Ultrasonic warning device - Google Patents
Ultrasonic warning deviceInfo
- Publication number
- JPS6483177A JPS6483177A JP24153887A JP24153887A JPS6483177A JP S6483177 A JPS6483177 A JP S6483177A JP 24153887 A JP24153887 A JP 24153887A JP 24153887 A JP24153887 A JP 24153887A JP S6483177 A JPS6483177 A JP S6483177A
- Authority
- JP
- Japan
- Prior art keywords
- receiver
- abnormality
- detouring
- wave signal
- transmitter
- 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
Links
Landscapes
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Abstract
PURPOSE:To obtain a highly reliable warning device against disturbance and the like from the outside by judging abnormality from the change of a received wave signal directly input into a receiver through detouring from a transmitter. CONSTITUTION:A transmitter 1 transmits an ultrasonic wave P of fixed frequency in a warning area and a receiver 2 receives a reflected wave from the warning area. An object detection means 3 detects a moving object on the basis of a Doppler component contained in a received wave signal received by the receiver 2. An abnormality judgement means 4 pulsatorily transmitts an ultrasonic wave from the transmitter 1 and judges outer abnormality of a warning device on the basis of a received wave signal obtained by receiving a detouring wave of an ultrasonic wave by the receiver 2. Further, a switching means 5 is changed over the connection of the detection means 3, the judgement means 4, the transmitter 1, and the receiver 2, and an object detecting mode and an abnormality judging mode are selected. In other words, the abnormality in the circumference to the warning device can be judged by monitoring whether the amplitude level of a detouring received wave signal is higher than a set point, and whether the length of a detouring received wave signal is within a set time.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24153887A JPS6483177A (en) | 1987-09-26 | 1987-09-26 | Ultrasonic warning device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24153887A JPS6483177A (en) | 1987-09-26 | 1987-09-26 | Ultrasonic warning device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6483177A true JPS6483177A (en) | 1989-03-28 |
Family
ID=17075843
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24153887A Pending JPS6483177A (en) | 1987-09-26 | 1987-09-26 | Ultrasonic warning device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6483177A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006003124A (en) * | 2004-06-15 | 2006-01-05 | Nippon Soken Inc | Ultrasonic sensor device |
-
1987
- 1987-09-26 JP JP24153887A patent/JPS6483177A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2006003124A (en) * | 2004-06-15 | 2006-01-05 | Nippon Soken Inc | Ultrasonic sensor device |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4700569A (en) | Method and arrangement for signal transmission in ultrasonic echo sounding systems | |
NZ329317A (en) | Air detector having an ultrasonic transmitter, an ultrasonic receiver, a circuit means and means for determining whether received signal is indicative of air in the liquid | |
EP0708019A3 (en) | Surface condition sensing system | |
GB0021648D0 (en) | Apparatus and method for interrogating a passive sensor | |
CA2187844A1 (en) | Device for Monitoring a Predetermined Level of a Liquid in a Container | |
US5768939A (en) | Method and apparatus for acoustic level measurements | |
CA2031453A1 (en) | Device for level gauging with microwaves | |
US3932870A (en) | On-line test circuit for intrusion alarm systems | |
CA2204907A1 (en) | Feed waste detector | |
WO1990013076A3 (en) | A detection system for locating aircraft | |
NZ333002A (en) | Ultrasonic Doppler speed measurement | |
JPS6483177A (en) | Ultrasonic warning device | |
SE9601831D0 (en) | Method and apparatus for detecting bubbles | |
JPH02223884A (en) | Moving object detecting device | |
JPS5748676A (en) | Specific fish detector | |
JPS5793271A (en) | Trouble detector in ultrasonic device | |
JPS5722576A (en) | Ultrasonic type vehicle speed measuring apparatus | |
JPS56153268A (en) | Distance measuring device | |
Regtien et al. | A low-cost sonar system for object identification. | |
JP2676533B2 (en) | Doppler sensor | |
JPS6484190A (en) | Method and apparatus for monitoring in-pile condition | |
JPS54108599A (en) | Detecting method for kind of vehicle using microprocessor | |
JPS54119953A (en) | Ultrasonic wave detection type kalman vortex flow meter | |
JPS57175442A (en) | Obstacle indicator for vehicle | |
JPH02223886A (en) | Moving object detecting device |