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Device and method for monitoring a moving body in a detection area

A technology for detecting areas and moving objects, which is applied to measuring devices, devices using optical methods, optical devices, etc., can solve the problems of reduced monitoring performance, great effort for monitoring devices, and inability to detect objects being put down or taken away. To achieve the effect of improving quality

Inactive Publication Date: 2018-03-20
DENSO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0011] However, in the configuration of Patent Document 1, it is necessary to register the background data in advance, and it is necessary to update the background data when a new object is brought in, when the arrangement is changed, etc.
In this case, if the background data is not updated, newly acquired objects and objects whose arrangement has been changed will always be detected as abnormal, resulting in a decrease in monitoring performance, and the background data itself used as a reference is different from the actual situation, so it cannot be Detecting an object being put down or taken away
In other words, in order to respond to the need to detect putting down and taking away, it is necessary to always keep the background data up-to-date, and there is a problem that it takes a lot of effort to operate the monitoring device.
In addition, in a configuration like Patent Document 2, there is no documented detection object except for moving objects, so it cannot meet the demand for detection of putting down and taking away

Method used

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  • Device and method for monitoring a moving body in a detection area
  • Device and method for monitoring a moving body in a detection area
  • Device and method for monitoring a moving body in a detection area

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no. 1 Embodiment approach

[0045] Below, refer to Figure 1 to Figure 9 The first embodiment of the present invention will be described.

[0046] Such as figure 1 As shown, the area sensor device 1 constituting the monitoring device of this embodiment is figure 1 Objects are detected by scanning the scan region R0 in the direction of the indicated arrow S, and a detection region R1 to be monitored is set in the scan region R0. in the figure 1, for example, the mark P1(t1) attached to the moving body MA indicates that the object is detected at the position P1 at the time t1, and the figure 1 In the case of , it is shown that the mobile body MA is detected at the positions P1 to P7 at times t1 to t7, respectively. Hereinafter, for convenience, for example, an object detected at a position P1 at time t1 is referred to as an object of P1(t1). in addition, figure 1 The object MS shown represents an object (for example an obstacle) which is fixedly arranged in the detection range R1.

[0047] Such as ...

no. 2 Embodiment approach

[0078] Below, refer to Figure 10 to Figure 13 A second embodiment of the present invention will be described. In addition, the configuration of the area sensor device is the same as that of the first embodiment.

[0079] The area sensor device 1 of the second embodiment executes Figure 10 Intrusion detection processing shown. exist Figure 10 In the case of the intrusion detection processing, steps F1 to F6 are the same as Figure 4 Steps A1 to A6 correspond to each other, detailed description is omitted, but after starting object detection (F1), starting moving object detection (F2), starting moving object detection (F3), reading moving object information (F4), and judging whether there is The moving object (F5), when the moving object exists (F5: Yes), when the detection result of the moving object is output (F6), the composite detection process is executed (F7). This composite detection processing is processing capable of detecting both putting down and taking away o...

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Abstract

In the monitoring device (1), an object in a detection area is detected by an optical sensor (13), and the moving speed and moving direction of the object are calculated according to the time change of the position information of the object. Furthermore, an object satisfying a predetermined movement condition is determined as a moving object. Thereby, the intrusion of the moving body into the detection area is detected. In the monitoring device, the judging unit (10e) further judges whether or not an object is detected within a range (post-passage detection range) set including the vicinity of a position where the detected moving object has passed. Furthermore, when an object is detected within the range, it is judged by the judging unit whether the object stays at the position for more than a predetermined judging period. The judgment result is output by the output unit (12).

Description

technical field [0001] The present invention relates to a device and a method for monitoring a moving body in a detection area, and more particularly to a device and a method for monitoring a moving body in a detection area using an optical sensor. Background technique [0002] In recent years, there has been a very high demand for monitoring the behavior of moving objects and the like in a desired detection area (or monitoring area) and the conditions in the area. Conventionally, various systems are known as a system responsible for this monitoring. [0003] For example, a system described in Patent Document 1 is known as a method for detecting the intrusion of a moving body into a detection area. In this system, in order to eliminate obstacles in the detection area, obstacles are registered in advance as background data, and the intrusion of a moving object is detected based on the difference between the measurement data obtained by scanning the detection area and the bac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08B13/184
CPCG01S17/42G08B13/187G01S17/58G01P13/045G01P3/36G01B11/00
Inventor 泷口昌宏岩崎哲也
Owner DENSO CORP