阅读说明：本技术 用于防护机器的光电安全传感器和方法 (Optoelectronic safety sensor and method for safeguarding a machine ) 是由 马库斯·哈姆斯 于 2021-05-20 设计创作，主要内容包括：本申请涉及用于防护机器的光电安全传感器和方法。给出了一种用于防护机器(34)的光电安全传感器(10),具有：光接收器(24),其用于光学检测对象数据；以及控制和评估单元(26),该控制和评估单元被配置用于基于对象数据来决定在机器(34)的周围环境中是否检测到安全关键的对象(36),并且在检测到的情况下触发以安全为导向的响应。在此,控制和评估单元(26)还被配置用于根据先前和/或同时检测到的对象来适配用于决定是否检测到安全关键的对象(36)的标准的灵敏度。(The present application relates to an optoelectronic safety sensor and method for safeguarding a machine. An optoelectronic safety sensor (10) for safeguarding a machine (34) is specified, having: a light receiver (24) for optically detecting object data; and a control and evaluation unit (26) which is configured to decide, on the basis of the object data, whether a safety-critical object (36) is detected in the surroundings of the machine (34), and to trigger a safety-oriented response in the event of detection. The control and evaluation unit (26) is also configured to adapt the sensitivity of the criterion for deciding whether a safety-critical object (36) is detected as a function of previously and/or simultaneously detected objects.)

1. An optoelectronic safety sensor (10) for safeguarding a machine (34) having: a light receiver (24) for optically detecting object data; and a control and evaluation unit (26) which is configured to decide, on the basis of the object data, whether a safety-critical object (36) is detected in the surroundings of the machine (34) and, in the event of detection, to trigger a safety-oriented response,

wherein the control and evaluation unit (26) is further configured for adapting a sensitivity of a criterion for deciding whether a safety-critical object (36) is detected or not depending on previously and/or simultaneously detected objects.

2. The security sensor (10) of claim 1, wherein the control and evaluation unit (26) is configured for evaluating an object intrusion protection zone (30) from the object data for detecting security-critical objects (36).

3. The safety sensor (10) as claimed in claim 1 or 2, wherein the control and evaluation unit (26) is configured for detecting potential safety-critical objects (36) before they are safety-critical based on the object data and using more sensitive criteria in case potential safety-critical objects (36) are detected.

4. The security sensor (10) of claim 3, wherein the control and evaluation unit (26) is configured for detecting the potentially security-critical object (36) on the basis of an evaluation object intruding into a preparation area.

5. The safety sensor (10) as claimed in claim 3 or 4, wherein the control and evaluation unit (26) is configured for detecting the potentially safety-critical object (36) by means of an additional sensor.

6. The safety sensor (10) as claimed in any of the preceding claims, wherein the control and evaluation unit (26) is configured for using more sensitive criteria for at least a period of the clearance period after detection of a safety-critical object (36).

7. The safety sensor (10) according to one of the preceding claims, wherein the control and evaluation unit (26) is configured for using a more sensitive criterion when a disturbance is detected, wherein the disturbance is identified in particular on the basis of overmodulation.

8. The safety sensor (10) according to any one of the preceding claims, wherein the criterion comprises a minimum number of measurement points associated with an object (36).

9. The safety sensor (10) according to any one of the preceding claims, wherein the criterion comprises a minimum size of the object (36).

10. The safety sensor (10) according to any one of the preceding claims, wherein the criterion comprises a number of repeated detections.

11. The safety sensor (10) of any one of the preceding claims, having a safety output (28) to output a binary safety signal indicating whether a safety-critical object (36) is detected.

12. The security sensor (10) of any one of the preceding claims, configured as a 3D camera, in particular a stereo camera or a light time-of-flight camera.

13. A method for safeguarding a machine (34), in which object data are optically detected and evaluated in order to decide whether a safety-critical object (36) is detected in the surroundings of the machine (34) and, in the event of detection, to trigger a safety-oriented response,

wherein the sensitivity of the criterion for deciding whether a safety-critical object (36) is detected is adapted in dependence of previously and/or simultaneously detected objects.