JPH02123688U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は本考案の投光器回路構成の一実施例、
第２図は投光器回路各部の信号波形図、第３図は
受光器回路の一実施例の構成を示すブロツク図、
第４図は受光器回路の初段増幅器の回路例、第５
図は受光器回路の電源電圧と検知距離及び消費電
流の関係を示す一実験結果を表したゲラフ、第６
図は従来からの対向型侵入者警報装置の基本構成
図、第７図は従来の投光器回路構成の一実施例、
第８図は従来の投光器の発振信号波形図である。 １……投光器、５……受光器、１４ａ……発振
回路の出力信号、２１……発光ダイオード（ＬＥ
Ｄ）、３０……１０進カウンター、４０……フオ
ト・トランジスタ、４１……増幅回路Ａ、４２…
…帯域通過フイルタ、４３……増幅回路Ｂ、４４
……波形整形回路、４５……検波回路、４６……
出力回路、７０……電源切換回路。 FIG. 1 shows an example of the projector circuit configuration of the present invention.
FIG. 2 is a signal waveform diagram of each part of the emitter circuit, and FIG. 3 is a block diagram showing the configuration of an embodiment of the receiver circuit.
Figure 4 is an example of the circuit of the first stage amplifier of the photoreceiver circuit.
The figure shows the results of an experiment showing the relationship between the power supply voltage, detection distance, and current consumption of the photodetector circuit.
The figure is a basic configuration diagram of a conventional facing-type intruder alarm device, and FIG. 7 is an example of a conventional floodlight circuit configuration.
FIG. 8 is an oscillation signal waveform diagram of a conventional projector. 1... Emitter, 5... Light receiver, 14a... Output signal of oscillation circuit, 21... Light emitting diode (LE
D), 30... Decimal counter, 40... Photo transistor, 41... Amplifier circuit A, 42...
...bandpass filter, 43...amplifier circuit B, 44
... Waveform shaping circuit, 45 ... Detection circuit, 46 ...
Output circuit, 70...Power switching circuit.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 発光素子より発せられる光線、該光線をパルス
ビーム化する投光器と、前記パルスビームを電気
信号に変換する受光素子を備えた受光器、該受光
器と前記投光器間の光線を遮断した場合に警報を
発する侵入者警報装置において、前記投光器の基
準発振パルス信号のパルス間隔を広げる手段と、
前記基準発振パルス信号のパルス幅を狭める手段
とを設けた投光器と、該投光器からの光線を受光
し、電気信号に変換増幅する増幅回路と、該増幅
回路の出力信号の不要成分を除去する帯域通過フ
イルタ回路と、該帯域通過フイルタ回路を通過し
た信号を増幅した後、整形する波形整形回路と、
該波形整形された信号をピーク検波する検回路波
とから構成された受光器、該受光器と前記投光器
の両方、もしくは前記受光器にのみ外部光の明暗
の変化に応動する検知素子、該検知素子の出力信
号により電源電圧を切換える手段とを設けたこと
を特徴とする侵入者警報装置。 A light beam emitted from a light emitting element, a light emitter that converts the light beam into a pulsed beam, a light receiver equipped with a light receiving element that converts the pulsed beam into an electrical signal, and an alarm that is issued when the light beam between the light receiver and the light emitter is interrupted. In an intruder alarm device that emits an intruder alarm, means for increasing the pulse interval of the reference oscillation pulse signal of the floodlight;
a light projector provided with means for narrowing the pulse width of the reference oscillation pulse signal; an amplifier circuit that receives the light beam from the projector, converts it into an electrical signal and amplifies it; and a band that removes unnecessary components of the output signal of the amplifier circuit. a pass filter circuit; a waveform shaping circuit that amplifies and shapes the signal that has passed through the band pass filter circuit;
A light receiver configured with a detector wave that peak-detects the waveform-shaped signal, a detection element that responds to changes in the brightness of external light in both the light receiver and the light emitter, or only in the light receiver, and the detection element. An intruder alarm device comprising means for switching a power supply voltage according to an output signal of the element.