Belt conveyor personnel intrusion detection system and method based on visual sensing

Abstract

A belt conveyor personnel intrusion detection system and method based on visual sensing, relating to the technical field of belt conveyor safety detection. The detection system comprises a visual sensor (1); a detection lens of the visual sensor (1) faces a belt conveyor so as to detect the position of a person relative to the belt conveyor; an output end of the visual sensor (1) is electrically connected to a control unit (2); and an output end of the control unit (2) is separately electrically connected to an alarm unit (3) and a driving device (4), so as to control startup of the alarm unit (3) or shutdown of the driving device (4).

Description

Belt conveyor personnel intrusion detection system and method based on visual sensing TECHNICAL FIELD

[0001] The present application relates to the technical field of belt conveyor safety detection, and in particular to a belt conveyor personnel intrusion detection system and method based on visual sensing. BACKGROUND

[0002] Belt conveyor is the abbreviation of belt conveyor, which uses the continuous or intermittent movement of the conveyor belt to convey various light and heavy objects, and can convey various bulk materials, as well as various paper boxes, packaging bags and other single pieces with small weight. It is widely used.

[0003] During the operation of the belt conveyor, if a person approaches, there will be a great safety hazard, and the transmission of the mechanical structure can easily cause harm to the approaching person. Therefore, the approach of personnel needs to be strictly controlled during the use of the belt conveyor to avoid safety problems. For this problem, the existing belt conveyor will also be equipped with warning devices, of which alarm and shutdown are the most common warning devices.

[0004] However, the existing warning devices are usually single alarm or shutdown, and the distance between the personnel and the belt conveyor is different for alarm and shutdown. Therefore, the existing warning devices are relatively single when used, that is, if the warning device for alarm is used, the personnel will still be in danger if they continue to approach the belt conveyor, and for the warning device for shutdown, the personnel will cause the belt conveyor to stop if they approach slightly, thereby affecting production.

[0005] SUMMARY

[0006] The present application provides a belt conveyor personnel intrusion detection system based on visual sensing, which comprises a visual sensor, the detection lens of the visual sensor is arranged towards the belt conveyor for detecting the position of the personnel relative to the belt conveyor, the output end of the visual sensor is electrically connected with a control unit, and the output end of the control unit is respectively electrically connected with an alarm unit and a driving device to control the opening of the alarm unit or the shutdown of the driving device.

[0007] The present application also provides a belt conveyor personnel intrusion detection method based on visual sensing, characterized by using the detection system as described above for detection, comprising the following steps:

[0008] The visual sensor detects the position of the personnel relative to the belt conveyor and transmits the detected position signal to the control unit in the form of an electrical signal;

[0009] The control unit calculates the distance between the personnel and the belt conveyor according to the position signal, and judges whether the distance is less than 100 cm, if the distance is less than 100 cm, the alarm device is started to alarm, if the distance is not less than 100 cm, the alarm device is not started.

[0010] The control unit continues to judge whether the distance is less than 50 cm, if the distance is less than 50 cm, the driving device is stopped, if the distance is not less than 50 cm, the driving device is not stopped.

[0011] The application further provides that the alarm device is a buzzer or a warning light.

[0012] The application further provides that the control unit adopts a PLC programming controller.

[0013] The application has the beneficial effect that, through the calculation of the control unit, the output signal can be judged according to the distance between the personnel and the belt conveyor, and then the alarm device is started and the driving device is stopped according to the distance, so that the use of the alarm device is more diversified, and the problem that the use of the existing alarm device is relatively single is effectively avoided. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 shows the structural schematic diagram of the system of the application.

[0015] Fig. 2 shows the flow chart of the method of the application.

[0016] Reference signs: 1, visual sensor; 2, control unit; 3, alarm unit; 4, driving device. DETAILED DESCRIPTION

[0017] Those skilled in the art can improve the process parameters according to the content herein. It should be particularly pointed out that all similar replacements and changes are obvious to those skilled in the art, and they are regarded as included in the application. The method and application of the application have been described by the preferred embodiments, and the related personnel can modify or appropriately change and combine the method and application described herein without departing from the content, spirit and scope of the application, to realize and apply the technical content of the application.

[0018] Example 1

[0019] The application provides a belt conveyor personnel intrusion detection system based on visual sensing, which comprises a visual sensor 1, and the detection lens of the visual sensor 1 is arranged towards the belt conveyor, so as to detect the position of the personnel relative to the belt conveyor. The output end of the visual sensor 1 is electrically connected with a control unit 2, the control unit 2 adopts a PLC programming controller, the visual sensor 1 can transmit the detected personnel position signal to the control unit 2, and the control unit 2 calculates the distance between the personnel and the belt conveyor based on the position signal.

[0020] The output end of the control unit 2 is electrically connected with an alarm unit 3 and a driving device 4, wherein the alarm unit 3 adopts a buzzer or a warning light. The control unit 2 judges the output control signal based on the calculated distance between the personnel and the belt conveyor, that is, when the distance reaches a certain range, the control unit 2 controls the alarm unit 3 to start the alarm, and when the distance is less than the alarm range, the control unit 2 controls the driving device 4 to stop, and the driving device 4 is the driving source of the belt conveyor, and thus the driving device 4 stops, which can avoid causing harm to the approaching personnel.

[0021] Embodiment 2

[0022] The embodiment also provides a belt conveyor personnel intrusion detection method based on visual sensing, which adopts the detection system of embodiment 1 to detect, and includes the following steps:

[0023] The visual sensor 1 detects the position of the personnel relative to the belt conveyor, and transmits the detected position signal to the control unit 2 in the form of an electrical signal.

[0024] The control unit 2 calculates the distance between the personnel and the belt conveyor according to the position signal, and judges whether the distance is less than 100 cm, if the distance is less than 100 cm, the alarm device is started to start the alarm, and if the distance is not less than 100 cm, the alarm device is not started.

[0025] The control unit 2 continues to judge whether the distance is less than 50 cm, if the distance is less than 50 cm, the driving device 4 stops, and if the distance is not less than 50 cm, the driving device 4 stops.

[0026] Further, through the judgment of the distance, the alarm form can be judged according to different distances.

[0027] In summary, through the calculation of the control unit 2, the output signal can be judged according to the distance between the personnel and the belt conveyor, and thus the alarm device and the driving device 4 are started to start the alarm and stop the work, so that the use of the alarm device is more diversified, and the problem that the existing alarm device is used single is effectively avoided.

[0028] The above only describes the preferred embodiments of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should also be within the protection scope of the present application.

Claims

1. A belt conveyor personnel intrusion detection system based on visual sensing, characterized in that: The application relates to a belt conveyor safety device, which comprises a visual sensor (1), a detection lens of the visual sensor (1) is arranged towards a belt conveyor for detecting the position of a person relative to the belt conveyor, an output end of the visual sensor (1) is electrically connected with a control unit (2), output ends of the control unit (2) are respectively electrically connected with an alarm unit (3) and a driving device (4) for controlling the starting of the alarm unit (3) or the shutdown of the driving device (4).

2. A belt conveyor personnel intrusion detection method based on visual sensing, characterized in that: The detection system is used for detection, and the detection system comprises the following steps: The visual sensor (1) detects the position of a person relative to the belt conveyor and transmits a detected position signal to the control unit (2) in the form of an electric signal; The control unit (2) calculates the distance between the person and the belt conveyor according to the position signal and judges whether the distance is less than 100 cm; if the distance is less than 100 cm, the alarm device is started to start alarming; if the distance is not less than 100 cm, the alarm device is not started; The control unit (2) continues to judge whether the distance is less than 50 cm; if the distance is less than 50 cm, the driving device (4) is shut down; if the distance is not less than 50 cm, the driving device (4) is not shut down.

3. The vision-sensor-based detection method of personnel intrusion into a belt conveyor as claimed in claim 2, characterized in that: The alarm device (3) is a buzzer or a warning light.

4. The vision sensor based belt conveyor personnel intrusion detection method of claim 2, wherein: The control unit (2) adopts a PLC programming controller.

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