Belt conveyor personnel protection method, equipment and medium

Abstract

The invention relates to the technical field of belt conveyors, in particular to a belt conveyor personnel protection method and equipment and a medium thereof. The method comprises the following steps: a worker carries a label for positioning; positioning nodes in signal connection with the labels are arranged on the inner side roadway wall where the belt conveyor walks; a controller is arranged, the controller is connected with all the positioning nodes, and a controller unit obtains positioning data of the positioning nodes and judges the positions of the labels; a dangerous area is divided, a first boundary of the dangerous area is set to be a straight line parallel to the belt conveyor, a second boundary parallel to the first boundary is set based on the width W of the belt conveyor and a set offset K, and an area formed between the first boundary and the second boundary is the dangerous area; the controller calculates the distance H between the label and the first boundary according to the position of the label, and judges whether the label is in the dangerous area or not based on the distance H, the width W of the belt conveyor and the offset K. Whether a worker is in a dangerous area or not can be identified, and deployment and maintenance are facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of belt conveyors, and in particular to a belt conveyor personnel protection method, equipment and medium thereof. Background Art

[0002] The coal mine belt conveyor personnel approach protection system is a safety warning system specially designed for coal mine underground belt conveyors and surrounding dangerous areas. The system uses precise personnel positioning, infrared sensing, infrared thermal imaging and other technical means to achieve real-time monitoring and early warning of personnel entering dangerous areas. When personnel approach dangerous areas such as the belt conveyor head and coal bunker opening, the system will promptly issue an audible and visual alarm or trigger the equipment to shut down, thereby effectively preventing accidents.

[0003] The current means of achieving safety protection and human-machine locking mainly include:

[0004] 1) Infrared technology: that is, personnel identification and approach alarm are carried out through infrared technology;

[0005] 2) Hardware equipment: personnel safety protection is achieved by installing additional structures;

[0006] 3) Single positioning node: Use a single positioning node for positioning, and realize personnel identification and proximity alarm by identifying the ball's position.

[0007] The above methods have the following disadvantages: infrared technology may cause false alarms due to the heat generated by the working face equipment, which may be close to the temperature of personnel; hardware equipment mainly relies on mechanical devices for mandatory protection, and its protection measures cannot achieve complete protection, which may still cause harm to personnel; although the system architecture of a single positioning node is simple, the electronic fence it defines can usually only be a circular area with a fixed radius centered on the sensor node, resulting in low accuracy and adaptability of the fence, which is difficult to fully meet the complex and changeable coal mine operating environment. In addition, there is also a solution that uses multiple sensor nodes to jointly deploy to accurately delineate the electronic fence. Although this solution can significantly improve the accuracy of the fence, the system complexity also increases, which brings considerable challenges to the installation and maintenance of coal mines. Summary of the invention

[0008] The present invention aims to solve at least one of the technical problems existing in the prior art.

[0009] To this end, the present invention provides a belt conveyor personnel protection method, which can identify whether the staff is in a dangerous area, and is convenient for deployment and maintenance.

[0010] According to the belt conveyor personnel protection method of the embodiment of the present invention, the method comprises the following steps:

[0011] Workers carry tags for location purposes;

[0012] At least two positioning nodes connected to the tag signal are arranged on the inner lane wall of the belt conveyor walking path;

[0013] A controller is set up, and the controller is connected to all positioning nodes. The controller unit obtains the positioning data of the positioning nodes and determines the position of the tags;

[0014] Divide the dangerous area, the first boundary of the dangerous area is set as a straight line parallel to the belt conveyor, and based on the width W of the belt conveyor and the set offset K, a second boundary parallel to the first boundary is set, and the area formed between the first boundary and the second boundary is the dangerous area, and the belt conveyor is in the dangerous area;

[0015] The controller calculates the distance H between the tag and the first boundary according to the position of the tag, and determines whether the tag is in the danger zone based on the distance H, the width W of the belt conveyor and the set offset K.

[0016] The beneficial effect of the present invention is that the belt conveyor personnel protection method of the present invention can determine whether the staff is in the danger zone by effectively identifying the labels entering the danger zone of the belt conveyor, so as to better control the operation of the belt conveyor. The present invention utilizes multiple positioning nodes, taking into account the system complexity and the fit of the danger zone. Especially when used in the scenario of belt conveyor personnel protection, the danger zone identifiable by the system is completely consistent with the real danger zone. The present invention is convenient for underground deployment and has high reliability in harsh environments such as working faces.

[0017] According to an embodiment of the present invention, calculating the distance H between the tag and the first boundary according to the position of the tag includes:

[0018] The two positioning nodes are connected to the three points of the tag to form a triangle. The distance between the two positioning nodes and the tag is measured, and the length between the two positioning nodes is known;

[0019] A vertical line is set in the triangle, and the length of the vertical line is calculated based on the three distances known above. The length of the vertical line is the distance H between the label and the first boundary.

[0020] According to an embodiment of the present invention, TOF or RSSI is used to measure the distance between two positioning nodes and a tag.

[0021] According to one embodiment of the present invention, determining whether a tag is in a dangerous area based on the distance H, the width W of the belt conveyor and the set offset K specifically includes the following steps:

[0022] When the distance H is greater than the width W of the belt conveyor plus the distance h of the set offset K, the tag is not in the danger zone;

[0023] When the distance H is less than or equal to the distance h of the width W of the belt conveyor plus the set offset K, the tag is in the danger zone.

[0024] According to one embodiment of the present invention, when the tag is in a dangerous area, the controller outputs a control signal to control the belt conveyor to stop.

[0025] According to one embodiment of the present invention, the controller further includes an alarm module. When the tag is in a dangerous area, the controller outputs an alarm signal to the alarm module for alarm warning.

[0026] According to an embodiment of the present invention, each positioning node is connected to the controller via a cable.

[0027] According to one embodiment of the present invention, the alarm signal is a digital signal, an analog signal or a switch signal.

[0028] A computer device according to an embodiment of the present invention includes:

[0029] processor;

[0030] A memory for storing executable instructions;

[0031] Wherein, the processor is used to read executable instructions from the memory and execute the executable instructions to implement the above-mentioned belt conveyor personnel protection method.

[0032] According to a computer-readable storage medium of an embodiment of the present invention, the computer-readable storage medium stores a computer program. When the computer program is executed by a processor, the processor implements the above belt conveyor personnel protection method.

[0033] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0034] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0036] Figure 1 It is a schematic diagram of the dangerous area deployment structure of the first embodiment of the present invention.

[0037] Figure 2 This is a schematic diagram of calculating the first boundary of the label distance when there are two positioning nodes in the first embodiment of the present invention.

[0038] Figure 3 This is a schematic diagram of calculating the first boundary of the label distance when there are multiple positioning nodes according to the first embodiment of the present invention.

[0039] Figure 4 It is a schematic diagram of the structure of a computer device according to the second embodiment of the present invention.

[0040] In the figure, 10 is a computer device; 1002 is a processor; 1004 is a memory; and 1006 is a transmission device. DETAILED DESCRIPTION

[0041] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0043] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] Example 1

[0045] The present application embodiment provides a belt conveyor personnel protection method, such as Figure 1 As shown, the method comprises the following steps:

[0046] Workers carry tags for positioning.

[0047] At least two positioning nodes connected to the tag signal are arranged on the inner side lane wall of the belt conveyor travel path, and the positioning nodes are used to communicate with the tag and perform position measurement.

[0048] A controller is set up, and the controller is connected to all positioning nodes. The controller unit obtains the positioning data of the positioning nodes and determines the position of the tags.

[0049] Divide the dangerous area, the first boundary of the dangerous area is set as a straight line parallel to the belt conveyor, based on the width W of the belt conveyor and the set offset K, set a second boundary parallel to the first boundary, the area formed between the first boundary and the second boundary is the dangerous area, and the belt conveyor is in the dangerous area; specifically, Figure 1 As shown, the positioning node is set on the inner tunnel wall of the belt conveyor's walking path, and the positioning node is parallel to the right side of the belt conveyor. The right side of the belt conveyor is the first boundary of the dangerous area, that is, the first boundary of the dangerous area is a straight line parallel to the belt conveyor. According to the width W of the belt conveyor and the set offset K, the second boundary of the dangerous area is set. The second boundary is parallel to the first boundary, the second boundary is close to the left side of the belt conveyor, and the distance between the second boundary and the belt conveyor is the offset K. By setting the offset K, a variety of on-site environments can be met, which is convenient for on-site deployment.

[0050] The controller calculates the distance H between the tag and the first boundary according to the position of the tag, and determines whether the tag is in the danger zone based on the distance H, the width W of the belt conveyor and the set offset K.

[0051] In this embodiment, if Figure 2 As shown, taking the number of positioning nodes as two as an example, calculating the distance H between the tag and the first boundary according to the position of the tag includes: connecting the two positioning nodes and the three points of the tag to form a triangle, measuring the distance between the two positioning nodes and the tag, and the length between the two positioning nodes is known; setting a vertical line in the triangle, and calculating the length of the vertical line according to the three known distances, and the length of the vertical line is the distance H between the tag and the first boundary. Further, TOF (Time of Flight) or RSSI (Received Signal Strength Indicator) is used to measure the distance between the two positioning nodes and the tag.

[0052] In this embodiment, determining whether the tag is in the danger zone based on the distance H, the width W of the belt conveyor and the set offset K specifically includes the following steps:

[0053] When the distance H is greater than the width W of the belt conveyor plus the distance h of the set offset K, the tag is not in the danger zone;

[0054] When the distance H is less than or equal to the distance h obtained by adding the width W of the belt conveyor to the set offset K, the tag is in the danger zone. In this embodiment, when the tag is in the danger zone, the controller outputs a control signal to control the belt conveyor to stop.

[0055] In this embodiment, the controller also includes an alarm module. When the tag is in a dangerous area, the controller outputs an alarm signal to the alarm module for alarm warning. The alarm signal is a digital signal such as RS485, CAN, RS232, an analog signal such as frequency, voltage, or a switch signal.

[0056] In this embodiment, each positioning node is connected to the controller via a cable, ensuring that signals between the positioning node and the controller can be effectively transmitted.

[0057] In this embodiment, if Figure 3 As shown in the figure, when there are multiple positioning nodes, each positioning node is installed at an equal distance. The distance between the label and the inner wall of the belt lane h1, h2, ..., h n-1 The value of h1, h2, ..., h n-1 The weighted average of the values ​​is used to obtain the distance H between the tag and the first boundary, thereby correcting the position calculation error caused by the fluctuation of the ranging of a single node and improving the positioning protection accuracy.

[0058] In summary, the belt conveyor personnel protection method of this embodiment effectively identifies the labels entering the dangerous area of ​​the belt conveyor, thereby determining whether the staff is in the dangerous area and better controlling the operation of the belt conveyor. The present invention utilizes multiple positioning nodes, taking into account the system complexity and the fit of the dangerous area. Especially when used in the scenario of belt conveyor personnel protection, the dangerous area identifiable by the system is completely consistent with the real dangerous area. The present invention is convenient for underground deployment and has high reliability in harsh environments such as working faces.

[0059] Example 2

[0060] An embodiment of the present application provides a computer device, which includes a processor and a memory, wherein the memory stores at least one instruction or at least one program, and the at least one instruction or the at least one program is loaded and executed by the processor to implement a belt conveyor personnel protection method provided in the above method embodiment.

[0061] Figure 4 The hardware structure diagram of a device for implementing a belt conveyor personnel protection method provided in an embodiment of the present application is shown. The device may participate in constituting or include the device or system provided in an embodiment of the present application. Figure 4As shown, the computer device 10 may include one or more processors 1002 (the processor may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 1004 for storing data, and a transmission device 1006 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply and / or a camera. It can be understood by those skilled in the art that Figure 4 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 4 More or fewer components as shown, or with Figure 4 Different configurations are shown.

[0062] It should be noted that the one or more processors and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the computer device 10 (or mobile device). As described in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0063] The memory 1004 can be used to store software programs and modules of application software, such as a program instruction / data storage device corresponding to a belt conveyor personnel protection method in an embodiment of the present application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 1004, that is, realizing the above-mentioned method. The memory 1004 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 1004 may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the computer device 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0064] The transmission device 1006 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the computer device 10. In one example, the transmission device 1006 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission device 1006 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0065] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer device 10 (or mobile device).

[0066] Example 3

[0067] An embodiment of the present application also provides a computer-readable storage medium, which can be set in a server to store at least one instruction or at least one program related to a belt conveyor personnel protection method in a method embodiment. The at least one instruction or the at least one program is loaded and executed by the processor to implement a belt conveyor personnel protection method provided in the above method embodiment.

[0068] Optionally, in this embodiment, the storage medium may be located in at least one of the multiple network servers of the computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media that can store program codes, such as a USB flash drive, a read-only memory (ROM), a random access memory (RAM), a mobile hard disk, a magnetic disk, or an optical disk.

[0069] Example 4

[0070] The embodiment of the present invention further provides a computer program product or a computer program, which includes a computer instruction stored in a computer-readable storage medium. A processor of a computer device reads the computer instruction from the computer-readable storage medium, and the processor executes the computer instruction, so that the computer device executes a belt conveyor personnel protection method provided in the above various optional embodiments.

[0071] It should be noted that the above-mentioned sequence of the embodiments of the present application is for description only and does not represent the advantages and disadvantages of the embodiments. The above-mentioned specific embodiments of the present application are described. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the embodiments and still achieve the desired results. In addition, the processes depicted in the drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0072] Each embodiment in this application is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the device, equipment and storage medium embodiments, since they are basically similar to the method embodiments, the description is relatively simple, and the relevant parts can be referred to the partial description of the method embodiment.

[0073] A person skilled in the art will understand that all or part of the steps to implement the above embodiments may be accomplished by hardware, or by a program to instruct the relevant hardware, and the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a disk or an optical disk, etc.

[0074] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A belt conveyor personnel protection method, characterized in that: The method comprises the following steps: Workers carry tags for location purposes; At least two positioning nodes connected to the tag signal are arranged on the inner lane wall of the belt conveyor walking path; A controller is set up, and the controller is connected to all positioning nodes. The controller unit obtains the positioning data of the positioning nodes and determines the position of the tags; Divide the dangerous area, the first boundary of the dangerous area is set as a straight line parallel to the belt conveyor, and based on the width W of the belt conveyor and the set offset K, a second boundary parallel to the first boundary is set, and the area formed between the first boundary and the second boundary is the dangerous area, and the belt conveyor is in the dangerous area; The controller calculates the distance H between the tag and the first boundary according to the position of the tag, and determines whether the tag is in the danger zone based on the distance H, the width W of the belt conveyor and the set offset K.

2. The belt conveyor personnel protection method according to claim 1, characterized in that: Calculating the distance H between the tag and the first boundary according to the position of the tag includes: Connect the two positioning nodes and the three points of the label to form a triangle, measure the distance between the two positioning nodes and the label, and the length between the two positioning nodes is known; A vertical line is set in the triangle, and the length of the vertical line is calculated based on the three distances known above. The length of the vertical line is the distance H between the label and the first boundary.

3. The belt conveyor personnel protection method according to claim 1, characterized in that: Use TOF or RSSI to measure the distance between two positioning nodes and the tag.

4. The belt conveyor personnel protection method according to claim 1, characterized in that: The determination of whether the tag is in the danger zone based on the distance H, the width W of the belt conveyor and the set offset K specifically includes the following steps: When the distance H is greater than the width W of the belt conveyor plus the distance h of the set offset K, the tag is not in the danger zone; When the distance H is less than or equal to the distance h of the width W of the belt conveyor plus the set offset K, the tag is in the danger zone.

5. The belt conveyor personnel protection method according to claim 4, characterized in that: When the tag is in the dangerous area, the controller outputs a control signal to stop the belt conveyor.

6. The belt conveyor personnel protection method according to claim 5, characterized in that: The controller also includes an alarm module. When the tag is in a dangerous area, the controller outputs an alarm signal to the alarm module for alarm warning.

7. The belt conveyor personnel protection method according to claim 1, characterized in that: Each positioning node is connected to the controller via a cable.

8. The belt conveyor personnel protection method according to claim 6, characterized in that: The alarm signal is a digital signal, an analog signal or a switch signal.

9. A computer device, characterized in that: include: processor; A memory for storing executable instructions; The processor is used to read executable instructions from the memory and execute the executable instructions to implement the belt conveyor personnel protection method as claimed in any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the processor implements the belt conveyor personnel protection method as claimed in any one of claims 1 to 8.

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