Fault early warning system for conveying equipment in coal mine area

Abstract

The invention provides a fault early warning system for conveying equipment in a coal mine area, relates to the technical field of conveying equipment operation condition monitoring, and aims to obtain more accurate detection standards and more suitable detection time points for all cooperative conveying equipment in the coal mine area. The plurality of sensors are respectively arranged on a plurality of conveying devices on a conveying line; the plurality of pressure monitoring modules are respectively arranged on a plurality of conveying devices on the conveying line; the speed model building module is used for building a first function relation of the transmission speed of the transmission equipment along with time change; the pressure model building module is used for building a second function relation of the conveying weight of the conveying equipment along with time change; the monitoring time determining module is used for determining the monitoring time point of each conveying device; and the data analysis module is used for judging the fault risk of the transmission equipment. The method has the advantage that the fault risk early warning of the conveying equipment can be comprehensively, efficiently and reliably carried out.

Description

Technical Field

[0001] The present invention relates to the technical field of conveying equipment operation status monitoring, and in particular to a conveying equipment failure early warning system in a coal mine area. Background Art

[0002] Conveying equipment in coal mining areas is an important tool for material transportation. However, the environment in coal mining areas is complex, and long-term operation of conveying equipment may be affected by high loads, dust erosion, mechanical wear, etc., which may eventually cause failures.

[0003] Continuous detection of the operating status of the conveying equipment can achieve fault early warning. However, during the detection process, due to the working interaction relationship of multiple conveying equipment in the coal mining area and the different operating standards of different equipment, it is difficult to determine the detection standards, appropriate detection frequency and detection time points for different conveying equipment, and thus it is difficult to achieve a cost-effective and highly reliable detection solution.

[0004] Therefore, it is necessary to optimize the detection system of the conveying status of the conveying equipment in the coal mining area, so as to obtain more accurate detection standards and more appropriate detection time points for each cooperating conveying equipment in the coal mining area, so as to obtain a more reliable and cost-effective coal mining area conveying equipment fault warning system. Summary of the invention

[0005] The object of the present invention is to provide a conveying equipment failure early warning system in a coal mine area, which can achieve more accurate detection standards and more suitable detection time points for each cooperating conveying equipment in the coal mine area.

[0006] The present invention is achieved through the following technical solutions:

[0007] A coal mine transmission equipment failure early warning system, comprising:

[0008] A plurality of speed monitoring modules are respectively arranged on a plurality of transmission devices on the transmission line and are used to monitor the transmission speed of the transmission devices;

[0009] A plurality of pressure monitoring modules are respectively arranged on a plurality of conveying devices on the conveying line, and are used to monitor the pressure on the conveying devices;

[0010] A speed model building module, used to respectively establish a first functional relationship between the transmission speed of each transmission device and time;

[0011] A pressure model building module, used to respectively establish a second functional relationship between the conveying weight of each conveying device and the change of the conveying weight over time;

[0012] A monitoring time determination module, used to determine a monitoring time point for each of the transmission devices;

[0013] A data analysis module is used to perform data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship and the second functional relationship, and to determine the failure risk of the transmission equipment at the corresponding monitoring time point.

[0014] Preferably, the method of establishing the first functional relationship between the transmission speed of each transmission device and time is:

[0015] sequentially numbering the plurality of transmission devices on the transmission line;

[0016] Get the set working speed of each of the conveying devices:

[0017]

[0018] Among them, v i (t) is the transmission speed of the i-th transmission device at time point t, Represents the working speed set for the i-th transmission device.

[0019] Preferably, the method of establishing the second functional relationship of the conveying weight of each conveying device varying with time is:

[0020] Set the interval period between two adjacent time points to T;

[0021]

[0022] Among them, p i (t) and p i (t-1) represents the total transport weight of the i-th transport device at time points t and t-1, respectively, and p i-1 (t-1) represents the total transport weight of the i-1th transport device at time point t-1, L i and L i-1 Respectively represent the total transmission length of the i-th transmission device and the i-1-th transmission device, ΔV i-1 is the transmission deviation value of the i-1th transmission device, is the actual value of the pressure monitoring module of the i-th conveying device at time point t.

[0023] Preferably, a method for determining the failure risk of the conveying device by performing data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship and the second functional relationship is:

[0024] sequentially numbering the plurality of transmission devices on the transmission line;

[0025] At a first time point, obtaining a value of a pressure monitoring module of the first transmission device;

[0026] Based on the second functional relationship, respectively obtain ideal values ​​of the pressure monitoring module of the transmission equipment at corresponding monitoring time points;

[0027] Reading the actual value of the pressure monitoring module of the conveying device at the future time point corresponding to the ideal value of the pressure monitoring module of the conveying device;

[0028] Determine whether the ideal value of the pressure monitoring module and the corresponding actual value exceed a preset difference threshold, and if not, do not perform any operation;

[0029] If the ideal value of any of the pressure monitoring modules and the corresponding actual value exceed a preset difference threshold, determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship;

[0030] When there is a transmission speed abnormality, it is determined that there is a risk of transmission device failure, and when there is no transmission speed abnormality, it is determined that there is a risk of other factors.

[0031] Preferably, the method for obtaining the monitoring time point of each of the transmission devices is:

[0032]

[0033] Among them, the monitoring time point of the i-th transmission device is n i , The operating speed set for the j-1th transmission device, ΔV j-1 is the transmission deviation value of the j-1th transmission device, L j-1 Represents the total transmission length of the j-1th transmission device.

[0034] Preferably, the method for respectively obtaining the ideal values ​​of the pressure monitoring module of the conveying equipment at the corresponding monitoring time points based on the second functional relationship is:

[0035]

[0036] t=n i ;

[0037] in, is the i-th transmission device at the corresponding monitoring time point n i The ideal value of the pressure monitoring module, p i (t) is the second functional relationship and represents the total transport weight of the i-th transport device at time point t.

[0038] Preferably, the method for determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship is:

[0039] Read the actual value of the speed monitoring module represents the actual value of the speed monitoring module of the m-th conveying device;

[0040] The ideal value of the conveying speed according to the conveying equipment represents the ideal value of the speed monitoring module of the m-th conveying device;

[0041] contrast and Whether the difference exceeds the speed difference threshold, if so, there is a transmission speed abnormality, if not, there is no transmission speed abnormality.

[0042] Preferably, an early warning push module is also provided for pushing the result of the failure risk of the transmission equipment to a remote end.

[0043] The technical solution of the present invention has at least the following advantages and beneficial effects:

[0044] The present invention realizes comprehensive coverage of transmission status detection of all transmission equipment by respectively setting a speed monitoring module and a pressure monitoring module for each transmission equipment, which helps to realize fault early warning of the transmission equipment in the entire coal mine area more accurately and effectively;

[0045] The present invention respectively establishes models of the conveying speed and conveying weight of each conveying device changing with time, and uses the first functional relationship and the second functional relationship to accurately describe the normal operating state of the device, thereby providing a data basis for subsequent fault risk judgment;

[0046] The present invention can establish appropriate detection standards and time points for each transmission device based on the working correlation characteristics between the transmission devices. In addition to the transmission status of a single detection device, the transmission correlation between the devices can also be effectively captured during the detection process, further improving the reliability of the transmission device failure step.

[0047] The present invention can preliminarily determine whether the transmission speed is the cause of the suspected abnormality of the transmission device. If it is the transmission speed, the functional state of the transmission device with abnormal transmission speed can be preferentially checked, thereby improving the efficiency of fault troubleshooting after early warning.

[0048] The present invention has a high-efficiency and accurate early warning capability of transmission equipment failure risks for multiple cooperating transmission equipment in coal mining areas, is easy to apply to coal mining areas, and has significant practical value and promotion significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the principle of a conveying equipment failure early warning system for a coal mine area provided in Example 1 of the present invention. DETAILED DESCRIPTION

[0050] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0051] Example 1

[0052] This embodiment provides a coal mine transmission equipment failure early warning system, see Figure 1 ,include:

[0053] A plurality of speed monitoring modules are respectively arranged on a plurality of transmission devices on the transmission line and are used to monitor the transmission speed of the transmission devices;

[0054] A plurality of pressure monitoring modules are respectively arranged on a plurality of conveying devices on the conveying line, and are used to monitor the pressure on the conveying devices;

[0055] A speed model building module, used to respectively establish a first functional relationship between the transmission speed of each transmission device and time;

[0056] A pressure model building module, used to respectively establish a second functional relationship between the conveying weight of each conveying device and the change of the conveying weight over time;

[0057] A monitoring time determination module, used to determine a monitoring time point for each of the transmission devices;

[0058] A data analysis module is used to perform data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship and the second functional relationship, and to determine the failure risk of the transmission equipment at the corresponding monitoring time point.

[0059] This embodiment establishes mathematical models of the change of transmission speed over time and the change of transmission weight over time for each transmission device, forming a first functional relationship and a second functional relationship. The first functional relationship and the second functional relationship can accurately describe the normal operating status of the transmission device, including the dynamic performance of the device under different load and operating speed settings. On this basis, the system can timely detect potential anomalies based on the deviation between the actual operating data of the transmission device and the model prediction value, providing a reliable data basis for subsequent fault risk judgment, thereby significantly improving the scientificity and accuracy of the early warning.

[0060] In this embodiment, the method of establishing the first functional relationship between the transmission speed of each transmission device and time is as follows:

[0061] sequentially numbering the plurality of transmission devices on the transmission line;

[0062] Get the set working speed of each of the conveying devices:

[0063]

[0064] Among them, v i (t) is the transmission speed of the i-th transmission device at time point t, Represents the working speed set for the i-th transmission device.

[0065] In the determination with the first functional relationship, the running speed of each conveying device is determined by a set value.

[0066] On the other hand, the method of establishing the second functional relationship between the conveying weight of each conveying device and the time variation is:

[0067] Set the interval period between two adjacent time points to T;

[0068]

[0069] Among them, p i (t) and p i (t-1) represents the total transport weight of the i-th transport device at time points t and t-1, respectively, and p i-1 (t-1) represents the total transport weight of the i-1th transport device at time point t-1, L i and L i-1 Respectively represent the total transmission length of the i-th transmission device and the i-1-th transmission device, ΔV i-1 is the transmission deviation value of the i-1th transmission device, is the actual value of the pressure monitoring module of the i-th conveying device at time point t.

[0070] The establishment of the second functional relationship of this embodiment takes into account the cooperation and transmission relationship between all transmission devices on a transmission line. Through this cooperation relationship, the change relationship of the carrying capacity of each transmission device over time is determined according to the transmission capacity of the transmission device. i-1 The design gives the conveying equipment a correction space for the carrying speed, because the transmission between the conveying equipment will also take a certain amount of time. For example, in the case of ideal seamless transmission, ΔV i-1 It can be 0. Other situations can be set according to the actual site conditions. For example, the longer the transfer time from the end of the i-1th transmission device to the beginning of the i-th transmission device, the greater the value of ΔV. i-1The larger the value, the better it can be determined by fitting experimental data.

[0071] Next, a method for determining the failure risk of the transmission device by performing data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship, and the second functional relationship is as follows:

[0072] sequentially numbering the plurality of transmission devices on the transmission line;

[0073] At a first time point, obtaining a value of a pressure monitoring module of the first transmission device;

[0074] Based on the second functional relationship, respectively obtain ideal values ​​of the pressure monitoring module of the transmission equipment at corresponding monitoring time points;

[0075] Reading the actual value of the pressure monitoring module of the conveying device at the future time point corresponding to the ideal value of the pressure monitoring module of the conveying device;

[0076] Determine whether the ideal value of the pressure monitoring module and the corresponding actual value exceed a preset difference threshold, and if not, do not perform any operation;

[0077] If the ideal value of any of the pressure monitoring modules and the corresponding actual value exceed a preset difference threshold, determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship;

[0078] When there is a transmission speed abnormality, it is determined that there is a risk of transmission device failure, and when there is no transmission speed abnormality, it is determined that there is a risk of other factors.

[0079] Furthermore, the method for obtaining the monitoring time point of each of the transmission devices is:

[0080]

[0081] Among them, the monitoring time point of the i-th transmission device is n i , The operating speed set for the j-1th transmission device, ΔV j-1 is the transmission deviation value of the j-1th transmission device, L j-1 Represents the total transmission length of the j-1th transmission device.

[0082] Based on the technical solution of this embodiment, the method for respectively obtaining the ideal value of the pressure monitoring module of the transmission equipment at the corresponding monitoring time point based on the second functional relationship is:

[0083]

[0084] t=ni ;

[0085] in, is the i-th transmission device at the corresponding monitoring time point n i The ideal value of the pressure monitoring module, p i (t) is the second functional relationship and represents the total transport weight of the i-th transport device at time point t.

[0086] In the detection process, this embodiment fully considers the working correlation characteristics between the conveying equipment in the coal mine area. According to the cooperative relationship of the conveying equipment during operation, reasonable detection standards and monitoring time points are formulated for each conveying equipment. This time point can basically ensure that each conveying equipment monitors the same batch of transported objects, making the detection more consistent and coherent, not only realizing accurate monitoring of the operating status of a single device, but also effectively capturing the transmission correlation between the devices.

[0087] As a preferred solution of this embodiment, a method for determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship is:

[0088] Read the actual value of the speed monitoring module represents the actual value of the speed monitoring module of the m-th conveying device;

[0089] The ideal value of the conveying speed according to the conveying equipment represents the ideal value of the speed monitoring module of the m-th conveying device;

[0090] contrast and Whether the difference exceeds the speed difference threshold, if so, there is a transmission speed abnormality, if not, there is no transmission speed abnormality.

[0091] Finally, it is also preferred to provide an early warning push module for pushing the result of the failure risk of the transmission equipment to a remote end.

[0092] When the deviation between the ideal value pre-passed by the pressure monitoring module and the corresponding actual value is too large, it will be judged as a risk of failure. At this time, the real-time transmission speed of each transmission device will be checked. When the speed is abnormal, an early warning can facilitate the staff to directly locate and prioritize the corresponding transmission device to find the cause of its abnormal transmission speed. When the speed is not abnormal, an early warning can facilitate the staff to prioritize the connection parts between the transmission devices. In other words, the design of this embodiment can significantly shorten the time for troubleshooting, improve the efficiency of handling problems after early warning, and thus minimize the impact of transmission equipment downtime.

[0093] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A coal mine transmission equipment failure early warning system, characterized in that: include: A plurality of speed monitoring modules are respectively arranged on a plurality of transmission devices on the transmission line and are used to monitor the transmission speed of the transmission devices; A plurality of pressure monitoring modules are respectively arranged on a plurality of conveying devices on the conveying line, and are used to monitor the pressure on the conveying devices; A speed model building module, used to respectively establish a first functional relationship between the transmission speed of each transmission device and time; A pressure model building module, used to respectively establish a second functional relationship between the conveying weight of each conveying device and the change of the conveying weight over time; A monitoring time determination module, used to determine a monitoring time point for each of the transmission devices; A data analysis module is used to perform data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship and the second functional relationship, and to determine the failure risk of the transmission equipment at the corresponding monitoring time point.

2. A coal mine conveyor equipment failure early warning system according to claim 1, characterized in that: The method of establishing the first functional relationship between the transmission speed of each transmission device and time is as follows: sequentially numbering the plurality of transmission devices on the transmission line; Get the set working speed of each of the conveying devices: Among them, v i (t) is the transmission speed of the i-th transmission device at time point t, Represents the working speed set for the i-th transmission device.

3. A coal mine conveyor equipment failure early warning system according to claim 2, characterized in that: The method of establishing the second functional relationship between the conveying weight of each conveying device and the time variation is as follows: Set the interval period between two adjacent time points to T; Among them, p i (t) and p i (t-1) represents the total transport weight of the i-th transport device at time points t and t-1, respectively, and p i-1 (t-1) represents the total transport weight of the i-1th transport device at time point t-1, L i and L i-1 Respectively represent the total transmission length of the i-th transmission device and the i-1-th transmission device, ΔV i-1 is the transmission deviation value of the i-1th transmission device, is the actual value of the pressure monitoring module of the i-th conveying device at time point t.

4. A coal mine conveyor equipment failure early warning system according to claim 1, characterized in that: The method for determining the failure risk of the transmission device by performing data analysis based on the value of the speed monitoring module, the data of the pressure monitoring module, the first functional relationship and the second functional relationship is: sequentially numbering the plurality of transmission devices on the transmission line; At a first time point, obtaining a value of a pressure monitoring module of the first transmission device; Based on the second functional relationship, respectively obtain ideal values ​​of the pressure monitoring module of the transmission equipment at corresponding monitoring time points; Reading the actual value of the pressure monitoring module of the conveying device at the future time point corresponding to the ideal value of the pressure monitoring module of the conveying device; Determine whether the ideal value of the pressure monitoring module and the corresponding actual value exceed a preset difference threshold, and if not, do not perform any operation; If the ideal value of any of the pressure monitoring modules and the corresponding actual value exceed a preset difference threshold, determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship; When there is a transmission speed abnormality, it is determined that there is a risk of transmission device failure, and when there is no transmission speed abnormality, it is determined that there is a risk of other factors.

5. A coal mine conveyor equipment failure early warning system according to claim 4, characterized in that: The method for obtaining the monitoring time point of each transmission device is: Among them, the monitoring time point of the i-th transmission device is n i , The operating speed set for the j-1th transmission device, ΔV j-1 is the transmission deviation value of the j-1th transmission device, L j-1 Represents the total transmission length of the j-1th transmission device.

6. A coal mine conveyor equipment failure early warning system according to claim 5, characterized in that: The method for respectively obtaining the ideal value of the pressure monitoring module of the transmission equipment at the corresponding monitoring time point based on the second functional relationship is: in, is the i-th transmission device at the corresponding monitoring time point n i The ideal value of the pressure monitoring module, p i (t) is the second functional relationship and represents the total transport weight of the i-th transport device at time point t.

7. A coal mine conveyor equipment failure early warning system according to claim 6, characterized in that: The method for determining whether there is a transmission speed abnormality based on the actual values ​​of all the speed monitoring modules and the first functional relationship is: Read the actual value of the speed monitoring module represents the actual value of the speed monitoring module of the m-th conveying device; The ideal value of the conveying speed according to the conveying equipment represents the ideal value of the speed monitoring module of the m-th conveying device; contrast and Whether the difference exceeds the speed difference threshold, if so, there is a transmission speed abnormality, if not, there is no transmission speed abnormality.

8. The coal mine conveyor equipment failure early warning system according to claim 1, characterized in that: An early warning push module is also provided for pushing the result of the failure risk of the transmission equipment to a remote end.

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