JPS57113383A - Apparatus for detecting living thing - Google Patents
Apparatus for detecting living thingInfo
- Publication number
- JPS57113383A JPS57113383A JP56000844A JP84481A JPS57113383A JP S57113383 A JPS57113383 A JP S57113383A JP 56000844 A JP56000844 A JP 56000844A JP 84481 A JP84481 A JP 84481A JP S57113383 A JPS57113383 A JP S57113383A
- Authority
- JP
- Japan
- Prior art keywords
- spacing
- living thing
- output
- sounds
- 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.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V1/00—Seismology; Seismic or acoustic prospecting or detecting
- G01V1/001—Acoustic presence detection
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Geology (AREA)
- Remote Sensing (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
PURPOSE:To make possible forming a judgement on whether a living thing such as a human being exists or not within a room by a method wherein sound in the room is picked up by a microphone and spacing between sounds is measured. CONSTITUTION:A sound picked up by a microphone 1 is amplified by an amplifier 2, made to pass through a filter 3 capable of absorbing the noise of the amplifier 2 itself, compared by a comparator 4 in terms of voltage, and outputted as a pulse when its voltage exceeds a certain level. The output is inputted to the reset terminal of a counter 5, which recounts the time starting with 0 by means of an internal oscillator each time the output pulse is generated. Therefore, when the spacing between sounds, that is, the spacing between the output pulses of the comparator 4 is shorter than the set time, a man is judged to be found.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56000844A JPS57113383A (en) | 1981-01-06 | 1981-01-06 | Apparatus for detecting living thing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP56000844A JPS57113383A (en) | 1981-01-06 | 1981-01-06 | Apparatus for detecting living thing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS57113383A true JPS57113383A (en) | 1982-07-14 |
Family
ID=11484932
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP56000844A Pending JPS57113383A (en) | 1981-01-06 | 1981-01-06 | Apparatus for detecting living thing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57113383A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58218828A (en) * | 1982-06-15 | 1983-12-20 | ナシヨナル・テクニカル・システムズ | Electronically operating device used for automatically deenergizing power utilization facility |
| JPH029891U (en) * | 1988-07-01 | 1990-01-22 |
-
1981
- 1981-01-06 JP JP56000844A patent/JPS57113383A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58218828A (en) * | 1982-06-15 | 1983-12-20 | ナシヨナル・テクニカル・システムズ | Electronically operating device used for automatically deenergizing power utilization facility |
| JPH029891U (en) * | 1988-07-01 | 1990-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0243439A1 (en) | A device for preventing of snoring | |
| DE3167427D1 (en) | Actuation device for an acoustic emission measuring system using the detection of the background noise | |
| SE8201598L (en) | DEVICE FOR REDUCING THE SOUND IN A SOUND SIGNAL | |
| GB1522608A (en) | Apparatus for and method of pulse-echo examination | |
| JPS57113383A (en) | Apparatus for detecting living thing | |
| Møhl et al. | Detection of sonar signals in the presence of pulses of masking noise by the echolocating bat, Eptesicus fuscus | |
| Trémolières et al. | A multi‐parametric study of impact noise‐induced TTS | |
| JPS5681063A (en) | Spark monitoring device for current collector | |
| DE3534277A1 (en) | Apparatus and method for the purpose of monitoring rooms and buildings with the aid of infrasound | |
| FR2369746A1 (en) | Optical smoke detector using pulsed light beam detector - has triggered monostable system and filter circuit to suppress noise | |
| JPS5784378A (en) | Method of measuring distance with supersonic wave in flowing fluid | |
| SU659947A1 (en) | Device for registering crack formation processes by acoustic emission technique | |
| JPS5558850A (en) | Detector for specific signal | |
| JPS5569064A (en) | Testing method for pulsating noise | |
| JPS5576973A (en) | Alarm sound generator | |
| JPS5916376B2 (en) | Ultrasonic switch noise removal circuit | |
| Krasnegor et al. | THE EVALUATION AND CONTROL OF ACOUSTICAL STANDING WAVES 1 | |
| GB1605185A (en) | Sensing arrangements | |
| JPS5487902A (en) | Cavitation supervisory system | |
| SU1067430A1 (en) | Acoustic emission device | |
| JPS5470881A (en) | Flaw generation monitor of member | |
| SU534687A1 (en) | Device for monitoring products by acoustic emission | |
| Garcia et al. | Action potential tuning curves recorded with a derived response technique | |
| Inamura et al. | Evidence for a tight blood‐labyrinth barrier | |
| FR2453603A1 (en) | Trap for small animals - has ultrasonic generator producing high pitched noise similar to that made by young of species and has anti-rodent powder |