公开(公告)号：US3728026A

公开(公告)日：1973-04-17

申请号：US3728026D

申请日：1971-11-08

Applicant: ASEA AB

Inventor： IDESTROM E ,  LING B ,  PERSSON A

IPC: G01S13/10 ,  G01C3/08

CPC classification number: G01S13/103

Abstract: An arrangement for measuring distance under conditions when disturbances of various types may be expected to occur between the measuring instrument and the object to which the distance is to be measured comprises an emitter unit arranged to emit a series of electro-magnetic pulses in the direction of the object and a receiver unit, which only registers the very first echo from each single pulse emitted, and the echo which of all those registered has covered the longest distance is considered to comprise a measurement of the distance to the object in question.

Abstract translation: 在测量仪器和要测量距离的物体之间可能期望出现各种类型的干扰的条件下测量距离的装置包括：发射器单元，其布置成沿着 对象和接收器单元仅记录从发射的每个单个脉冲中的第一个回波，并且所有记录的那些被覆盖了最长距离的回波被认为包括到所讨论的对象的距离的测量。

公开(公告)号：US3826380A

公开(公告)日：1974-07-30

申请号：US35062373

申请日：1973-04-12

Applicant: ASEA AB

Inventor： LENANDER B ,  LING B

IPC: B66C13/22 ,  B66C1/00 ,  B66C1/10 ,  B66C13/06 ,  B66C19/00

CPC classification number: B66C13/063

Abstract: To determine the deviation of the hoisting device of a crane from a vertical line, a light emitting arrangement is placed on the crane which emits a wide beam of light downwardly. Within this beam, the hook or other hoisting device has an upwardly directed reflector. There is also on the crane a detector unit which receives the light reflected from the reflector and emits a signal which indicates the deviation of the hoisting device from the vertical.

Abstract translation: 为了确定起重机的起重装置与垂直线的偏差，发光装置被放置在起重机上，其向下发射宽光束。 在该梁内，钩或其他提升装置具有向上指向的反射器。 在起重机上还有一个检测器单元，其接收从反射器反射的光并发出指示提升装置与垂直方向偏离的信号。