JPH0447793U - - Google Patents
Info
- Publication number
- JPH0447793U JPH0447793U JP8787990U JP8787990U JPH0447793U JP H0447793 U JPH0447793 U JP H0447793U JP 8787990 U JP8787990 U JP 8787990U JP 8787990 U JP8787990 U JP 8787990U JP H0447793 U JPH0447793 U JP H0447793U
- Authority
- JP
- Japan
- Prior art keywords
- signal
- transmitted
- transmitting
- wave
- ultrasonic wave
- 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
Links
- 238000001514 detection method Methods 0.000 claims description 5
- 230000003321 amplification Effects 0.000 claims description 3
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 3
- 230000010355 oscillation Effects 0.000 claims 4
- 230000002159 abnormal effect Effects 0.000 claims 2
- 239000000284 extract Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Burglar Alarm Systems (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
第１図は本考案の超音波警報器を構成している
送波部の機能的構成を示すブロツク図、第２図は
本考案の超音波警報器を構成している受波部の機
能的構成を示すブロツク図である。
１……送波部、２……受波部、１０……送波周
波数選択手段、１１……発振回路、１２……送波
信号増幅手段、１３……送波器、２０……受波器
、２１……受波信号増幅手段、２２……受波周波
数選択手段、２３……利得調整手段、２４……受
波レベル判定手段、２５……検波回路、２６……
ドツプラ波判定手段、２７……警報信号出力手段
、２８……警報手段。
Figure 1 is a block diagram showing the functional configuration of the wave transmitting unit that constitutes the ultrasonic alarm of the present invention, and Figure 2 is a functional block diagram of the wave receiving unit that constitutes the ultrasonic alarm of the present invention. FIG. 2 is a block diagram showing the configuration. DESCRIPTION OF SYMBOLS 1... Wave transmitter, 2... Wave receiver, 10... Wave transmitting frequency selection means, 11... Oscillator circuit, 12... Wave transmitting signal amplification means, 13... Wave transmitter, 20... Wave receiver 21... Received signal amplification means, 22... Received frequency selection means, 23... Gain adjustment means, 24... Received wave level determination means, 25... Detection circuit, 26...
Doppler wave determination means, 27... alarm signal output means, 28... alarm means.
Claims (1)
音波受波部とより構成され、 前記超音波送波部が、送波信号を発する発振回
路と、該発振回路に接続され発生した送波信号を
増幅する送波信号増幅手段と、増幅した送波信号
を送出する送波器とを備え、 前記超音波受波部が、前記送波部によつて送波
される送波信号を受波する受波器と、該受波器が
受波した受波信号を増幅する受波信号増幅手段と
、受波信号の受波レベルが所定レベルの場合に受
波信号から送波信号をカツトしてドツプラ周波数
を抽出する検波回路と、該検波回路に接続されこ
の検波回路によつて抽出されるドツプラ周波数が
侵入者によるものか否かを判定し侵入者によるも
のである場合には異常信号を出力するドツプラ波
判定手段と、該ドツプラ波判定手段が出力する異
常信号が入力すると侵入警報信号を出力する警報
信号出力手段とを備え、 前記発振回路が発する送波信号を選定するため
送波する超音波の周波数の選択を行い得る送波周
波数選択手段を前記発振回路に接続するとともに
、 前記受波部に、前記送波部によつて送出される
超音波の周波数に受波信号の周波数を設定し得る
受波周波数選択手段と、前記受波信号増幅手段に
より増幅された受波信号の受波レベルの調整を行
う利得調整手段と、該利得調整手段により調整さ
れた受波信号が所定の受波レベルに達しているか
否かを判定し受波レベルが所定レベル以下で一定
時間継続する場合には前記警報信号出力手段に異
常信号を出力する受波レベル判定手段を設け、 前記送波部より超音波を警備対象空間に送波し
、移動物体によつて発生するドツプラ周波数を前
記受波部によつて検出し警報信号を出力するとと
もに、前記受波レベル判定手段の出力によつても
警報信号を出力する超音波警報器。[Scope of Claim for Utility Model Registration] Consisting of an ultrasonic wave transmitter and an ultrasonic wave receiver installed in a security target space, the ultrasonic wave transmitter includes an oscillation circuit that emits a transmitted signal, and an ultrasonic wave receiver that A transmitting signal amplifying means connected to an oscillation circuit and amplifying a generated transmitting signal, and a transmitter transmitting the amplified transmitting signal, wherein the ultrasonic receiving section a receiver for receiving a transmitted signal; a received signal amplifying means for amplifying a received signal received by the receiver; A detection circuit that cuts the transmitted signal from the received signal and extracts the Doppler frequency, and a detection circuit that is connected to the detection circuit and determines whether the Doppler frequency extracted by the detection circuit is caused by an intruder. and an alarm signal output means that outputs an intrusion alarm signal when the abnormal signal outputted by the Doppler wave determination means is input, and the oscillation circuit generates an intrusion alarm signal. A transmitting frequency selection means capable of selecting a frequency of the ultrasonic wave to be transmitted in order to select a transmitting signal is connected to the oscillation circuit, and the ultrasonic wave transmitted by the transmitting section is transmitted to the receiving section. Reception frequency selection means capable of setting the frequency of the reception signal to the frequency of the sound wave; gain adjustment means for adjusting the reception level of the reception signal amplified by the reception signal amplification means; and the gain adjustment means. A receiving device that determines whether the received signal adjusted by has reached a predetermined receiving level and outputs an abnormal signal to the alarm signal output means if the received signal level continues for a certain period of time below the predetermined level. Level determination means is provided, the ultrasonic wave is transmitted from the wave transmitter to the security target space, the Doppler frequency generated by the moving object is detected by the wave receiver, and an alarm signal is output, and the receiver An ultrasonic alarm device that outputs an alarm signal based on the output of a wave level determining means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8787990U JP2541456Y2 (en) | 1990-08-24 | 1990-08-24 | Ultrasonic alarm |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8787990U JP2541456Y2 (en) | 1990-08-24 | 1990-08-24 | Ultrasonic alarm |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0447793U true JPH0447793U (en) | 1992-04-23 |
| JP2541456Y2 JP2541456Y2 (en) | 1997-07-16 |
Family
ID=31820624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8787990U Expired - Fee Related JP2541456Y2 (en) | 1990-08-24 | 1990-08-24 | Ultrasonic alarm |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2541456Y2 (en) |
-
1990
- 1990-08-24 JP JP8787990U patent/JP2541456Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2541456Y2 (en) | 1997-07-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |