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Light barrier

一种光栅栏、光路的技术，应用在光栅栏领域，能够解决错误反射、安全级别低、范围限制等问题

Active Publication Date: 2009-07-29
MARANTEC ANTRIEB STEUERUNG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of reflective light barrier is easier to install and more cost effective to manufacture, but has a lower level of security due to the possibility of false reflections and thus limits its range

Method used

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  • Light barrier

Examples

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Embodiment Construction

[0028] FIG. 1 shows a schematic diagram of a light barrier according to the invention for monitoring a light path 30 . The base assembly 1 has a first transmitter 2 that emits an optical signal 3 along the light path to be monitored and a first receiver 4 that generates an output signal for control 5 . The base assembly 1 is made as a base device integrating a first transmitter 2 and a first receiver 4 . They thus form a unit.

[0029] Instead of passive reflectors, now, according to the invention, the light barrier of the invention has an active reflector assembly 6 with a second receiver 7 and a second emitter 8, wherein the second receiver 7 is used to receive the optical signal 3 emitted by the first transmitter 2, and the second transmitter 8 is used to transmit a feedback signal 9 according to the received signal. The active reflector assembly 6 also forms a unit in which the second receiver 7 and the second emitter 8 are integrated.

[0030] In the light barrier acco...

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Abstract

The present invention relates to an optical fence for monitoring optical path, having a base assembly with a first emitter for emitting an optical signal and a first receiver for generating an output signal for control. According to the invention, the optical fence is provided with a fed reflector assembly having a second receiver and a second emitter, wherein the second receiver being used for receiving the optical signal emitted by the first emitter, and the second emitter being used for emitting a feedback signal based on the received optical signal.

Description

technical field [0001] The invention relates to a light barrier for monitoring a light path, having a base assembly with a first emitter for emitting a light signal and a first receiver for generating an output signal for control device. In particular the invention relates to light barriers for controlling door drives. Background technique [0002] An object in the monitored light path can be detected by such a light barrier, ie the receiver is used to check whether an object obstructs the light signal emitted by the transmitter. The receiver of the base unit evaluates the radiated light signal and provides a corresponding switching signal at the control output. In this respect, both an operating principle with a static output signal and a dynamic principle are possible. [0003] Known light barriers can be designed as one-way light barriers, wherein a transmitter is arranged on one side of the light path to be monitored and a receiver, which is directly irradiated by the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V8/20
CPCG01V8/22
Inventor 米夏埃尔·赫尔曼
Owner MARANTEC ANTRIEB STEUERUNG
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