JPS6457588U - - Google Patents

Description

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

第１図は従来の装置における焦電型熱線検出素
子の接続図、第２図は第１図の接続素子を用いた
従来の装置の回路図、第３図は本考案実施例の焦
電型熱線検出素子の接続図、第４図は第３図の検
出素子を用いた本考案実施例の回路図、第５図は
第３図第４図の装置における信号波形の一例を示
した図である。なお図において、１，２ならびに
１１〜１４は焦電型熱線検出素子、である。 Fig. 1 is a connection diagram of a pyroelectric heat ray detection element in a conventional device, Fig. 2 is a circuit diagram of a conventional device using the connection element of Fig. 1, and Fig. 3 is a pyroelectric type according to an embodiment of the present invention. A connection diagram of a heat ray detection element, Fig. 4 is a circuit diagram of an embodiment of the present invention using the detection element of Fig. 3, and Fig. 5 is a diagram showing an example of a signal waveform in the device of Figs. 3, 4, and 4. be. In the figure, numerals 1, 2 and 11 to 14 are pyroelectric heat ray detection elements.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 互いに逆極性で直列に接続した２つあての焦電
型熱線検出素子をそれぞれ電界効果型トランジス
タよりなる増幅回路の入力端に接続して２組の熱
線検出回路を構成し、上記２組の熱線検出回路の
出力端を１組の波形検出回路の入力端にそれぞれ
接続すると共に前記２つあての焦電型熱線検出素
子をほぼ同一位置において互いに直交する方向へ
配列して熱線集光レンズの焦点面に配置した熱線
式侵入者感知器。 Two sets of heat ray detection circuits are constructed by connecting two pyroelectric heat ray detection elements connected in series with opposite polarities to the input terminals of an amplifier circuit consisting of a field effect transistor, and The output terminals of the detection circuits are respectively connected to the input terminals of a set of waveform detection circuits, and the two pyroelectric heat ray detection elements are arranged in substantially the same position in mutually orthogonal directions to form the focal point of the heat ray condensing lens. Heat wire intruder detector placed on the surface.