JPS6372687U - - Google Patents

Description

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

第１図は本考案の一実施例に係る超音波警報装
置の回路構成を示す図、第２図及び第３図はタイ
ムチヤート、第４図は警報装置における検知信号
と受波検出信号の一般的な関係を示す図、第５図
は本考案の警報装置における検知信号と受波検出
信号の関係を示す図である。 ２……超音波送波回路、１６……超音波受波回
路、２６……直接波禁止回路、３４……検知信号
発生回路、４４……切換スイツチ、４６……第１
ゲート回路、４８……警報回路、５０……距離設
定信号発生回路、６０……第２ゲート回路、６２
……表示回路。 Fig. 1 is a diagram showing the circuit configuration of an ultrasonic alarm device according to an embodiment of the present invention, Figs. 2 and 3 are time charts, and Fig. 4 is a general diagram of the detection signal and reception detection signal in the alarm device. FIG. 5 is a diagram showing the relationship between the detection signal and the reception detection signal in the alarm device of the present invention. 2... Ultrasonic wave transmitting circuit, 16... Ultrasonic wave receiving circuit, 26... Direct wave prohibition circuit, 34... Detection signal generation circuit, 44... Changeover switch, 46... First
Gate circuit, 48... Alarm circuit, 50... Distance setting signal generation circuit, 60... Second gate circuit, 62
...Display circuit.

Claims (1)

【実用新案登録請求の範囲】 一定周期毎に超音波を送波する超音波回路と、 該超音波送波回路より送波された超音波の反射
波を受波して受波検出信号を出力する超音波受波
回路と、 前記受波検出信号の入力によつて警報動作を行
なう警報回路と、 前記超音波の送波時から外部操作によつが設定
される時間の経過後に一定時間幅の険知信号を出
力する検知信号発生回路と、 前記検知信号の出力期間中は前記受波検出信号
の前記警報回路への入力を禁止する第１ゲート回
路と、 前記受波検出信号の入力によつて明示動作を行
なう表示回路と、 前記検知信号の出力開始時から設定時間経過後
に該検知信号の出力時間幅より短い時間幅の距離
設定信号を出力する距離設定信号発生回路と、 前記距離設定信号の出力期間中は前記受波検出
信号の前記表示回路への入力を禁止する第２ゲー
ト回路と、 外部切換操作により前記第１ゲート回路か第２
ゲート回路のいずれか一方を常時前記受波検出信
号を禁止する禁止信号を出力する切換スイツチと
、 を有することを特徴とする超音波警報装置。[Scope of claim for utility model registration] An ultrasonic circuit that transmits ultrasonic waves at regular intervals, and receives reflected waves of the ultrasonic waves transmitted from the ultrasonic wave transmitting circuit and outputs a reception detection signal. an alarm circuit that performs an alarm operation in response to the input of the reception detection signal; and an alarm circuit that performs an alarm operation in response to input of the reception detection signal; a detection signal generation circuit that outputs an alarm signal; a first gate circuit that prohibits input of the reception detection signal to the alarm circuit during the output period of the detection signal; a display circuit that performs a clear operation when the detection signal is output; a distance setting signal generation circuit that outputs a distance setting signal having a time width shorter than the output time width of the detection signal after a set time has elapsed from the start of outputting the detection signal; and the distance setting signal a second gate circuit that prohibits input of the received wave detection signal to the display circuit during the output period; and a second gate circuit that prohibits input of the received wave detection signal to the display circuit;
An ultrasonic alarm device comprising: a changeover switch that outputs an inhibition signal that always inhibits one of the gate circuits from receiving the reception detection signal.