JPS63163594U

JPS63163594U -

Info

Publication number: JPS63163594U
Application number: JP5376487U
Authority: JP
Priority date: 1987-04-09
Filing date: 1987-04-09
Publication date: 1988-10-25

Description

[Brief explanation of the drawing]

第１図〜第４図はこの考案による侵入検出装置
の一実施例を示す図で、第１図は発信装置のブロ
ツク回路図、第２図はマルチバイブレータの出力
波形図、第３図は受信装置のブロツク回路図、第
４図は信号処理回路の論理回路図、第５図はこの
考案及び従来の侵入検出装置を示す正面図である
。図中、１は発信装置、１ａはエネルギー波（光
線）、３は受信装置、１１〜１４は発振器、１５
はマルチバイブレータ、１６〜１９はゲート回路
、２２は発光ダイオード、２３はホトダイオード
、２５〜２８はフイルタ、２９〜３２はレベル検
出器、３３〜３８はＡＮＤゲートである。なお、
図中同一符号は同一部分を示す。 Figures 1 to 4 are diagrams showing one embodiment of the intrusion detection device according to this invention. Figure 1 is a block circuit diagram of the transmitter, Figure 2 is an output waveform diagram of the multivibrator, and Figure 3 is a receiver. FIG. 4 is a block circuit diagram of the device, FIG. 4 is a logic circuit diagram of a signal processing circuit, and FIG. 5 is a front view showing this invention and a conventional intrusion detection device. In the figure, 1 is a transmitting device, 1a is an energy wave (ray), 3 is a receiving device, 11 to 14 are oscillators, and 15
1 is a multivibrator, 16 to 19 are gate circuits, 22 is a light emitting diode, 23 is a photodiode, 25 to 28 are filters, 29 to 32 are level detectors, and 33 to 38 are AND gates. In addition,
The same reference numerals in the figures indicate the same parts.

Claims

[Claims for Utility Model Registration] (1) Transmission that transmits to a predetermined location an energy wave that contains a predetermined number of frequency components among a plurality of different frequency components and whose combination is repeated in a cycle in which the combination changes sequentially a predetermined number of times. An intrusion detection device comprising: a receiving device that receives the energy wave and emits an output containing each of the frequency components; and a signal processing circuit that emits an abnormal signal based on the frequency components included in the output of the receiving device. (2) The intrusion detection device according to claim 1, wherein the signal processing circuit emits an abnormal signal when all of the plurality of frequency components are not included. (3) The intrusion detection device according to claim 1, wherein the signal processing circuit is configured to generate an abnormal signal when even one of a plurality of frequency components is not included. (4) The intrusion detection device according to claim 1, wherein the signal processing circuit emits an abnormal signal when all of a plurality of frequency components are included.