Linkage protection device and method integrating personnel two-dimensional precise positioning and sound-light alarm for fully mechanized coal mining face of coal mine

Abstract

The invention provides a linkage protection device and method integrating personnel two-dimensional precise positioning and sound-light alarm for a fully mechanized coal mining face of a coal mine. In view of complex environments such as poor sight due to influence of coal dust and water mist on a fully mechanized coal mining face, signal shielding of equipment due to limited operation space, easiness in damage of wired communication cables due to extrusion of coal and movement equipment, difficulty in installation and maintenance of positioning equipment and the like, a set of two-dimensional positioning and linkage protection device and method for working face personnel are invented. The working face personnel two-dimensional positioning and linkage protection alarm system comprises a positioning base station, an audible and visual alarm, a wired switch, a wireless switch, a man-machine locking system and an AI video monitoring system, data transmission and data interaction are carried out through the Ethernet and a CAN bus, two-dimensional precise positioning of working face personnel is achieved, and the working face personnel are protected and alarmed. The purpose of active safety protection of personnel on the mining face is improved, the safety level of the mining system is improved, and the integration system can reduce the number of general devices and achieve low cost. The coal mine underground working face personnel comprehensive monitoring two-dimensional precise positioning and linkage protection alarm device system and method are suitable for coal mine working faces with various coal seam thicknesses.

Description

Technical Field

[0001] The present invention relates to the field of positioning in fully mechanized coal mining faces, and particularly to a two-dimensional precise positioning and linkage protection device and method for personnel in the working face. Background Art

[0002] In the complex production environment of coal mines, the working conditions are harsh. Especially in the working face, there are numerous on-site equipment. When remotely controlling production, precise personnel positioning, video surveillance, etc. are required for assistance to ensure the safety monitoring of personnel and equipment in the on-site environment. Currently, various intelligent working faces have begun to be equipped with systems such as UWB precise positioning systems and video AI surveillance systems. However, each system is independent, and there is insufficient linkage with the host equipment and the working face collaborative control system. It still relies on personnel to check and then operate, and the positioning accuracy can only achieve one-dimensional positioning, and there is no man-machine interaction in the working face. However, with the increasing intensity of the construction of intelligent coal mines in China and the introduction of high-end information technologies, data interaction and transmission among multiple systems have basically been achieved in the current working face. Based on operations such as working face production control, safety detection, and personnel management, a comprehensive monitoring system for working face personnel is developed to achieve two-dimensional precise positioning of working face personnel, video integrated monitoring, and automatic linkage sound and light alarms for abnormal working conditions, which can improve the automation level of the system. In view of this, the demand for real-time positioning and real-time protection of personnel in fully mechanized coal mining faces is becoming increasingly prominent. In particular, achieving two-dimensional precise positioning of the working face and information interconnection and linkage protection alarms in the working face is of great significance for the safe production of the working face. Summary of the Invention

[0003] In order to solve the technical bottleneck of current working face personnel positioning technology, the purpose of the present disclosure is to propose a linkage protection device and method for integrating two-dimensional precise positioning and sound and light alarms of personnel in a coal mine fully mechanized working face.

[0004] Based on the above purpose, a linkage protection device and method for integrating two-dimensional precise positioning and sound and light alarms of personnel in a coal mine fully mechanized working face disclosed by the present invention mainly include: personnel positioning base stations, sound and light alarms, wireless switches, wired switches, power supplies, power cables, communication cables, man-machine interlock systems, voice reporting systems, and data processing servers.

[0005] Among them, the positioning base station mainly realizes two-dimensional positioning of working face personnel through the UWB-AOA algorithm. The two-dimensional positioning ranging accuracy can reach 10 cm, and the angle measurement accuracy can reach 2°. At the same time, the station layout distance in the working face can be extended to 30 m, which can reduce the number of devices and complexity required for deploying the positioning system compared with traditional ultra-wideband positioning solutions, and reduce construction and maintenance costs. In addition, the positioning base station disclosed by the present invention realizes a 360° omnidirectional high-precision ranging and angle measurement system by deploying a three-oscillator antenna array.

[0006] Correspondingly, the present invention discloses an audible and visual alarm, which is characterized in that it can present different voice and light color warning forms according to different working conditions, is controlled through the CAN bus, and is connected to a switch at the beginning of the working face to be converted into a network signal for data interaction with the centralized control system; at the same time, the alarm lights in the audible and visual alarm adopt 20 low-power LED lamp beads, which are distributed in a ring shape and are controlled through the CAN bus; in addition, the voice alarm module in the alarm light selects a protection level not less than IP67, and uses a voice alarm module that supports 256 voice recordings and broadcasts, with a rated power of 3W and supports CAN bus control.

[0007] Correspondingly, the present invention also discloses a wireless switch with a data wireless bridging function arranged in the system. This switch also supports CAN to network signal conversion to ensure the wireless continuous transmission of operation data when the communication is interrupted at the working face.

[0008] Correspondingly, the present disclosure also determines a layout method for a linkage protection device integrating two-dimensional precise positioning of personnel and audible and visual alarms in a fully mechanized coal mining face: the base stations are arranged at a distance of 30m, and the audible and visual alarm lights are installed on each support.

[0009] Correspondingly, the present invention also discloses a man-machine interlock system arranged in the system, which is characterized in that it provides two ways for personnel positioning and active protection in the working face.

[0010] Among them, Method 1: The positioning system data installed on the support is uploaded to the centralized control host of the data processing center. When the data shows that there are people within 0.5 meters around the shearer, inside the support, at the feeding port of the conveyor, and in front of the coal baffle of the scraper conveyor, the centralized control host controls the shearer, conveyor, scraper conveyor, and support to stop to ensure personnel safety; Method 2: The positioning base station can be installed at specific positions of the shearer, scraper conveyor, and conveyor. When the base station monitors that there are people near the equipment, the control circuit can be disconnected to cut off the power supply of the equipment to ensure personnel safety.

[0011] Correspondingly, the present invention also discloses an AI video monitoring system arranged in the system, which is characterized in that it can realize the identification of the position of personnel in the working face, different types of workers, and the identification of overrun risks; at the same time, the AI video monitoring system can cooperate with the audible and visual alarm to give an alarm.

[0012] As can be seen from the above, for a system and method for comprehensive monitoring, positioning, and linkage protection and alarm of personnel in a working face described in the present disclosure, the linkage protection and alarm system is characterized by including the following steps: 1) After personnel of different trades enter the working face operation area, the positioning base station as described above quickly matches the positioning identification cards of the operating personnel to perform two-dimensional positioning on the personnel, and combines with the AI video surveillance system described above for auxiliary positioning to comprehensively judge the position and time of the operating personnel entering the working face; 2) The system quickly transmits the comprehensively determined personnel position information to the centralized control center through a wired or wireless network, and the centralized control center issues equipment locking instructions in real time according to the personnel position; 3) After receiving the alarm instruction through the CAN bus, the audible and visual alarm immediately broadcasts the corresponding working condition information by voice, and warns the operating personnel to pay attention to safety and informs the equipment operation status information through the change of light color; 4) After the operating personnel move away from the dangerous area, the man-machine locking is released, and the audible and visual alarm resumes the safety indication. Description of the Drawings

[0013] In order to more clearly illustrate the technical solutions in the present disclosure or related technologies, the following will briefly introduce the drawings required for use in the embodiments or related technology descriptions. They are only used to show the composition of the personnel positioning system and do not constitute an improper limitation to the present invention.

[0014] Figure 1 It is the system architecture diagram of the two-dimensional precise positioning, comprehensive monitoring, linkage protection, audible and visual alarm device for personnel in the working face.

[0015] Figure 2 It is the layout schematic diagram of the precise positioning system for personnel in the working face.

[0016] Figure 3 It is the schematic diagram of the positioning base station.

[0017] Figure 4 It is the fusion diagram of two-dimensional personnel precise positioning and the electro-hydraulic control system of the support.

[0018] Figure 5 It is the schematic diagram of the composition of the positioning base station + alarm unit.

[0019] Figure 6 It is the schematic diagram of the structure of the two-dimensional precise positioning active protection and voice precise delivery and broadcast system. Detailed Embodiments

[0020] To make the purpose, technical solutions and advantages of the present disclosure more clear and understandable, the following will further describe the present disclosure in detail with reference to specific embodiments and the accompanying drawings. However, the protection scope of the present invention is not limited to the following embodiments.

[0021] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present disclosure should have the ordinary meanings understood by those of ordinary skill in the field to which the present disclosure belongs. The terms "first", "second", "firstly", "secondly" and similar words used in the embodiments of the present disclosure indicate order. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0022] Referring to the attached Figure 1 , the present invention provides a system and method for a combined monitoring and linkage protection audible and visual alarm device for two-dimensional precise positioning of personnel on a working face, which is carried out according to the following steps.

[0023] Specifically, when a staff member carrying a positioning card first enters the working face, quickly match the system diagram of the positioning base station fixed on the hydraulic support system shown in the attached Figure 2 to scan and locate the position information of the personnel on the working face; determine the position of the positioning tag based on the time difference of arrival, signal arrival angle, relative position of the positioning base station, and moving direction of the positioning tag received by the positioning base station shown in the attached Figure 3 .

[0024] After receiving the positioning information, the positioning base station performs unified standardization processing of the system data according to the positioning personnel, support number, and surrounding environment, and establishes it within the same dimension to achieve precise positioning of the three. At the same time, the personnel positioning information is interacted with the centralized control system through the Ethernet signal to realize the display of the personnel position in the centralized control system.

[0025] According to the fusion diagram of two-dimensional personnel precise positioning and the electro-hydraulic control system of the support shown in the attached Figure 4 , the centralized system transmits this information to the electro-hydraulic control system, and the electro-hydraulic control system locks the actions of the supports corresponding to the positions where the personnel are located according to the personnel position information to prevent the actions of the supports from causing harm to the personnel and provide guarantee for personnel safety protection.

[0026] According to the attached Figure 5 and Figure 6 shown, after the centralized control system feeds back the personnel positioning information to the audible and visual alarm installed on the hydraulic support, the audible and visual alarm gives a warning broadcast according to the transmitted signal and gives a light warning at the same time.

[0027] When the operator leaves the positioning position, the man-machine interlock is released, and the audible and visual alarm resumes the safety indication. When the staff member walks to the position of the next hydraulic support, the positioning system restarts and repeats the steps of the above embodiment.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of a two-dimensional precise positioning integrated monitoring and linkage protection sound and light alarm device system and method for personnel on the integrated working face provided by the present disclosure, rather than limiting it; although the present disclosure has been described with reference to the preferred embodiments, those of ordinary skill in the art should understand that: it is still possible to modify the specific implementation manners of the present disclosure or perform equivalent replacements on some technical features; without departing from the spirit of the technical solutions of the present disclosure, they should all be covered within the scope of the technical solutions claimed by the present disclosure.

Claims

1. A linkage protection device and method for fully mechanized coal mining working face integrating two-dimensional precise positioning of personnel and sound and light alarm, characterized in that: A linkage protection device for underground coal mines integrating two-dimensional precise positioning of personnel and sound and light alarms comprises: a personnel positioning base station, a sound and light alarm, a wireless switch, a wired switch, a power supply, a power supply cable, a communication cable, a man-machine locking system, a voice reporting system, and a data processing server; A personnel positioning base station, used to determine the personnel positioning data; The personnel positioning base station is installed at the bracket position and is used to determine the area where the personnel positioning data is located.

2. A linkage protection device and method for fully mechanized coal mining working face integrating two-dimensional precise positioning of personnel and sound and light alarm, characterized in that: The method for linkage protection of a coal mine fully mechanized mining face integrating two-dimensional precise positioning of personnel and sound and light alarm comprises: collecting personnel position information on the coal mining face to obtain personnel positioning data on the coal mining face; Determine the area where the personnel location data is located; When the area is in a preset danger, the human-machine interface is locked and an audible and visual alarm is sounded in the area.

3. The positioning base station as described in claim 1 realizes a 360-degree omnidirectional high-precision ranging and angle measurement system by deploying a three-element antenna array, which can simultaneously measure the distance and direction of the target relative to the base station. By deploying one base station, two-dimensional high-precision positioning of the target can be achieved.

4. The sound and light alarm as claimed in claim 1, characterized in that It is possible to present different forms of sound and light warnings according to different working conditions, and to control them through the CAN bus. A wired switch is connected at the beginning of the working surface to convert them into network signals for data interaction with the centralized control system. At the same time, a wireless switch with a data wireless bridging function is also arranged in the linkage alarm system as described in claim 1. The switch also supports CAN to network signal conversion to ensure wireless continuation of running data when communication is broken on the working surface.

5. The alarm light in the sound and light alarm as described in claim 3 uses 20 LED lamp beads with a power consumption of , which are distributed in a specific rule and are controlled by various industrial buses such as CAN bus or other network signals.

6. The voice alarm module in the alarm light as described in claim 3 uses a protection level not lower than IP67, and uses a voice alarm module that supports multiple voice recordings or a network type, and supports various industrial buses such as CAN bus or other network signals for control.

7. The arrangement method of the two-dimensional precise positioning comprehensive monitoring and linkage protection sound and light alarm device system for working face personnel as described in claim 1 is: the base stations are arranged according to the set distance, and the sound and light alarms are installed according to each bracket.

8. The human-machine locking system according to claim 2, characterized in that Two methods are provided for positioning and active protection of personnel on the working surface. Among them, method one: the data of the positioning system installed on the bracket is uploaded to the centralized control host of the data processing center. When the data shows that there are people within 0.5 meters around the coal mining machine, inside the bracket, at the feeding port of the transfer machine, and in front of the coal baffle of the scraper machine, the centralized control host controls the coal mining machine, transfer machine, scraper machine and bracket to stop to ensure the safety of personnel; method two: the positioning base station can be installed at a specific location of the coal mining machine, scraper machine and transfer machine. When the base station detects that there are people near the equipment, the control loop can be disconnected to cut off the power to the equipment to ensure the safety of personnel.

9. A system and method for integrating two-dimensional accurate positioning of personnel on a working face and integrated monitoring and linkage protection sound and light alarm device as claimed in claim 2, wherein the linkage protection alarm system is characterized in that it comprises the following steps: 1) After workers of different types of work enter the working area of ​​the work surface, the three-element antenna array base station as claimed in claim 1 quickly matches the worker positioning identification card to perform two-dimensional positioning of the worker, and combines the AI ​​video surveillance system as claimed in claim 8 to assist in positioning, and comprehensively judge the position and time of the worker entering the work surface; 2) The personnel location information determined according to step 1 of claim 7 is quickly transmitted to the centralized control center via a wired or wireless Ethernet, and the centralized control center issues a device locking instruction in real time according to the personnel location; 3) After receiving the alarm command through the CAN bus, the sound and light alarm will immediately broadcast the corresponding working condition information by voice, and warn the operator to pay attention to safety and inform the equipment operating status information through the change of light color; 4) After the operator is away from the danger zone, the human-machine lock is released and the sound and light alarm resumes safety indication.

Images