专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

2. 发明授权

US4706227A Acoustic obstruction detector and method 失效
标题翻译：声障探测器及方法
公开(公告)号：US4706227A
公开(公告)日：1987-11-10
申请号：US824723
申请日：1986-01-31
申请人： Dale R. DuVall , John E. Bateson , Lew V. Hewitt , David P. Hewitt
发明人： Dale R. DuVall , John E. Bateson , Lew V. Hewitt , David P. Hewitt
IPC分类号： B66B13/26 , E05F15/00 , G01S15/04 , G01S15/18 , G01S9/66
CPC分类号： G01S15/04 , B66B13/26 , E05F15/43 , G01S15/18 , E05F2015/433 , E05Y2900/104
摘要： Obstruction detector apparatus operatively coupled to an automatic electric door operator compares the time span of transmission and receipt of reflected echoes of ultrasonic energy within a door passageway obstruction zone with predetermined time spans in order to prevent door closure under conditions indicating passageway obstruction or system malfunction. Signal generators provide timing signals respectively representative of the anticipated time span of reflected echoes from locations in front of, and beyond, the door jamb opposite the ultrasonic transmitter and receiver transducers for comparison by a relay controller with the time of generation of a signal representing a reflected echo at the transducer receiver, the relay controller appropriately actuating a door operator relay in response to such comparison. Various network portions provide pulse generation to the transmitter, an initial blanking period during which reflected echoes are disregarded, and programmed gain control for electronically shaping an obstruction detection zone to a proximate area of specific interest.
摘要翻译：可操作地耦合到自动电动门操作器的障碍物检测器设备将门禁通道内的超声波能量的反射回波的时间跨度与预定的时间跨度相比较，以便在指示通道阻塞或系统故障的条件下防止门关闭。信号发生器提供定时信号，其分别代表来自与超声波发射器和接收器换能器相对的门侧面之前和之后的位置的反射回波的预期时间间隔，用于由继电器控制器与产生代表在传感器接收器处的反射回波，继电器控制器响应于这种比较，适当地致动门操作器继电器。各种网络部分向发射机提供脉冲产生，忽略反射回波的初始消隐周期，以及用于将障碍物检测区域电子成形到特定关注区域的编程增益控制。

IPRDB

热门服务

关于我们

友情链接

联系方式