阅读说明：本技术 列车门与屏蔽门空隙异物检测系统和方法 (Train door and shield door gap foreign matter detection system and method ) 是由 阳召成 吕长伟 孙皓 程忠阳 于 2019-11-01 设计创作，主要内容包括：本发明实施例公开了一种列车门与屏蔽门空隙异物检测系统和方法,所述系统包括：图像获取模块用于实时获取列车门与屏蔽门空隙的图像；数据传输模块用于将图像获取模块的图像传输到异物检测模块,数据传输模块采用光纤链路传输方式；异物检测模块用于根据图像获取模块获取的图像对列车门与屏蔽门空隙进行异物检测。实现了列车门与屏蔽门空隙的异物检测,图像获取模块能够扫描到列车门与屏蔽门空隙的整个区域,对于列车门与屏蔽门空隙出现体积较小的异物也能够检测出来,提高了异物检测的可靠性；数据传输模块采用光纤链路传输方式,使得列车门与屏蔽门空隙异物检测系统抗干扰能力强,网络可靠性高,数据传输质量好。(The embodiment of the invention discloses a train door and shield door gap foreign matter detection system and a method, wherein the system comprises: the image acquisition module is used for acquiring an image of a gap between the train door and the shielding door in real time; the data transmission module is used for transmitting the image of the image acquisition module to the foreign matter detection module, and adopts an optical fiber link transmission mode; the foreign matter detection module is used for detecting foreign matters in the gap between the train door and the shielding door according to the image acquired by the image acquisition module. The foreign matter detection of the gap between the train door and the shielding door is realized, the image acquisition module can scan the whole area of the gap between the train door and the shielding door, and the foreign matter with smaller volume appearing in the gap between the train door and the shielding door can be detected, so that the reliability of the foreign matter detection is improved; the data transmission module adopts an optical fiber link transmission mode, so that the foreign matter detection system in the gap between the train door and the shielding door has strong anti-interference capability, high network reliability and good data transmission quality.)

1. The utility model provides a train door and shield door space foreign matter detecting system which characterized in that includes: the system comprises an image acquisition module, a data transmission module and a foreign matter detection module;

the image acquisition module is used for acquiring an image of a gap between the train door and the shielding door in real time;

the data transmission module is used for transmitting the image of the image acquisition module to the foreign matter detection module, and adopts an optical fiber link transmission mode;

the foreign matter detection module is used for detecting foreign matters in the gap between the train door and the shielding door according to the image acquired by the image acquisition module.

2. The system of claim 1, wherein the foreign object detection module comprises:

the background modeling unit is used for establishing a background image template according to a background image acquired by the image acquisition module within first preset time;

and the foreign matter detection unit is used for detecting foreign matters in the image to be detected acquired by the image acquisition module within second preset time according to the background image template.

3. The system of claim 2, wherein the context modeling unit is specifically configured to:

determining whether a door opening signal is detected;

and if the door opening signal is detected, establishing a background image template according to the background image acquired by the image acquisition module within the first preset time.

4. The system of claim 2, wherein the foreign object detection unit is specifically configured to:

determining whether a train shielding door is closed;

and if the train shielding door is closed, carrying out foreign matter detection on the image to be detected acquired by the image acquisition module within second preset time according to the background image template.

5. The system of claim 1, wherein the image acquisition module comprises a plurality of cameras, the cameras being positioned above the train screen door.

6. The system of claim 1, further comprising a storage module for storing the image acquired by the image acquisition module in real time and the detection result of the foreign object detection module.

7. A train door and shield door gap foreign matter detection method is characterized by comprising the following steps:

the image acquisition module acquires an image of a gap between the train door and the shielding door in real time;

transmitting the image to a foreign matter detection module in a fiber link transmission mode;

and the foreign matter detection module detects foreign matters in the gap between the train door and the shielding door according to the image.

8. The method of claim 7, wherein detecting the foreign object in the train door and screen door gap based on the image comprises:

establishing a background image template according to a background image within a first preset time;

and carrying out foreign matter detection on the image to be detected acquired within second preset time according to the background image template.

9. The method of claim 8, wherein the creating the background image template according to the background image within the first preset time comprises:

determining whether a door opening signal is detected;

and if the door opening signal is detected, establishing a background image template according to the background image within the first preset time.

10. The method of claim 8, wherein the detecting the foreign object on the image to be detected acquired within the second preset time according to the background image template comprises:

determining whether a train shielding door is closed;

and if the train shielding door is closed, carrying out foreign matter detection on the image to be detected acquired within the second preset time according to the background image template.

Technical Field

The embodiment of the invention relates to the field of train safety, in particular to a train door and shield door gap foreign matter detection system and method.

Background

A screen door is usually provided between the train door and the platform of the subway to prevent passengers from accidentally falling onto the subway train track. The train door has the advantages that due to the existence of the gap, when a train door closing signal is sent out by the train and the train door warning lamp is on, the situation that bodies or objects are clamped easily occurs when passengers get on or off the train due to the fact that the gap is formed between the train door and the shielding door, and great danger can be brought to train operation and passenger safety if a trainee does not notice the situation at the moment.

In order to prevent people or articles from being clamped, an infrared transmitting device and an infrared receiving device are usually installed between two doors of a train carriage, so that an infrared light curtain is formed between the two doors, and if the infrared receiving device does not receive a signal sent by the infrared transmitting device, the existence of a foreign matter between the two doors is indicated. However, this detection method cannot detect the presence of a foreign object having a small volume, such as a small backpack or an umbrella, and this detection method can only detect whether there is a foreign object between two doors of a carriage, and cannot detect whether there is a foreign object between a train door and a screen door.

Disclosure of Invention

In view of this, embodiments of the present invention provide a system and a method for detecting a foreign object in a gap between a train door and a shield door, so as to improve the reliability of detecting the foreign object in the gap between the train door and the shield door.

In a first aspect, an embodiment of the present invention provides a train door and shield door gap foreign object detection system, including: the system comprises an image acquisition module, a data transmission module and a foreign matter detection module;

the image acquisition module is used for acquiring an image of a gap between the train door and the shielding door in real time;

the data transmission module is used for transmitting the image of the image acquisition module to the foreign matter detection module, and adopts an optical fiber link transmission mode;

the foreign matter detection module is used for detecting foreign matters in the gap between the train door and the shielding door according to the image acquired by the image acquisition module.

Further, the foreign matter detection module includes:

the background modeling unit is used for establishing a background image template according to a background image acquired by the image acquisition module within first preset time;

and the foreign matter detection unit is used for detecting foreign matters in the image to be detected acquired by the image acquisition module within second preset time according to the background image template.

Further, the background modeling unit is specifically configured to:

determining whether a door opening signal is detected;

and if the door opening signal is detected, establishing a background image template according to the background image acquired by the image acquisition module within the first preset time.

Further, the foreign object detection unit is specifically configured to:

determining whether a train shielding door is closed;

and if the train shielding door is closed, carrying out foreign matter detection on the image to be detected acquired by the image acquisition module within second preset time according to the background image template.

Further, the image acquisition module comprises a plurality of cameras, and the cameras are arranged above the train shielding door.

The device further comprises a storage module, wherein the storage module is used for storing the image acquired by the image acquisition module in real time and the detection result of the foreign matter detection module.

In a second aspect, an embodiment of the present invention provides a method for detecting a foreign object in a gap between a train door and a shield door, including:

the image acquisition module acquires an image of a gap between the train door and the shielding door in real time;

transmitting the image to a foreign matter detection module in a fiber link transmission mode;

and the foreign matter detection module detects foreign matters in the gap between the train door and the shielding door according to the image.

Further, the detecting the foreign matter in the gap between the train door and the shielding door according to the image comprises:

establishing a background image template according to a background image within a first preset time;

carrying out foreign matter detection on the image to be detected acquired within second preset time according to the background image template;

further, the establishing of the background image template according to the background image within the first preset time includes:

determining whether a door opening signal is detected;

and if the door opening signal is detected, establishing a background image template according to the background image within the first preset time.

Further, the foreign matter detection of the image to be detected acquired within the second preset time according to the background image template includes:

determining whether a train shielding door is closed;

and if the train shielding door is closed, carrying out foreign matter detection on the image to be detected acquired within the second preset time according to the background image template.

The train door and shield door gap foreign matter detection system provided by the embodiment of the invention obtains images of the train door and shield door gap in real time through the image acquisition module; the data transmission module transmits the image of the image acquisition module to the foreign matter detection module, and the data transmission module adopts an optical fiber link transmission mode; the foreign matter detection module detects foreign matters in the gap between the train door and the shielding door according to the image acquired by the image acquisition module. The foreign matter detection of the gap between the train door and the shielding door is realized, the image acquisition module can scan the whole area of the gap between the train door and the shielding door, and the foreign matter with smaller volume appearing in the gap between the train door and the shielding door can be detected, so that the reliability of the foreign matter detection is improved; the data transmission module adopts an optical fiber link transmission mode, so that the foreign matter detection system in the gap between the train door and the shielding door has strong anti-interference capability, high network reliability and good data transmission quality.

Drawings

Fig. 1 is a schematic structural diagram of a train door and screen door gap foreign matter detection system according to a first embodiment of the present invention;

fig. 2 is a schematic structural diagram of a system for detecting foreign matters in gaps between train doors and a screen door according to a second embodiment of the present invention;

fig. 3 is a schematic flow chart of a method for detecting a foreign object in a gap between a train door and a screen door according to a third embodiment of the present invention.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

Before discussing exemplary embodiments in more detail, it should be noted that some exemplary embodiments are described as processes or methods depicted as flowcharts. Although a flowchart may describe the steps as a sequential process, many of the steps can be performed in parallel, concurrently or simultaneously. In addition, the order of the steps may be rearranged. A process may be terminated when its operations are completed, but may have additional steps not included in the figure. A process may correspond to a method, a function, a procedure, a subroutine, a subprogram, etc.

Furthermore, the terms "first," "second," and the like may be used herein to describe various orientations, actions, steps, elements, or the like, but the orientations, actions, steps, or elements are not limited by these terms. These terms are only used to distinguish one direction, action, step or element from another direction, action, step or element. For example, the first preset time may be the second preset time, and similarly, the second preset time may be referred to as the first preset time, without departing from the scope of the present application. The first preset time and the second preset time are both preset times, but are not the same preset time. The terms "first", "second", etc. are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "plurality", "batch" means at least two, e.g., two, three, etc., unless specifically limited otherwise.