CN111120386B - Automatic setting method for action threshold of electromechanical equipment for coal mine - Google Patents
Automatic setting method for action threshold of electromechanical equipment for coal mine Download PDFInfo
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- CN111120386B CN111120386B CN202010001466.9A CN202010001466A CN111120386B CN 111120386 B CN111120386 B CN 111120386B CN 202010001466 A CN202010001466 A CN 202010001466A CN 111120386 B CN111120386 B CN 111120386B
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- 239000003245 coal Substances 0.000 title claims abstract description 22
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- 238000001514 detection method Methods 0.000 claims abstract description 8
- 230000004044 response Effects 0.000 claims description 11
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- 230000002159 abnormal effect Effects 0.000 description 2
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- 206010063385 Intellectualisation Diseases 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D27/00—Control, e.g. regulation, of pumps, pumping installations or pumping systems specially adapted for elastic fluids
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
- E21F1/006—Ventilation at the working face of galleries or tunnels
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
- E21F17/00—Methods or devices for use in mines or tunnels, not covered elsewhere
- E21F17/18—Special adaptations of signalling or alarm devices
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Abstract
The invention provides a method for automatically setting an action threshold of electromechanical equipment for a coal mine, which comprises the following steps: installing a start-stop sensor on the electromechanical equipment to be tested underground, connecting the start-stop sensor into a safety monitoring system to serve as a multi-parameter sensor, and uploading a detection original signal value and an electromechanical equipment state value; the upper computer records and records the real-time values of the start-stop sensor; continuously running, marking the starting time period and the stopping time period of the electromechanical equipment on the upper computer, and executing an automatic adjustment command; the system software automatically analyzes the original signal change condition and the state switching change condition in the period, integrates the effect time, the state stability and the self-learning duration, and automatically calculates the action threshold value and the state switching time; the sensor adjusts the real-time state output and stores the real-time state output, and the upper point is not lost.
Description
Technical Field
The invention relates to a coal mine underground technology, in particular to an automatic setting method for an action threshold of electromechanical equipment for a coal mine.
Background
Mine ventilation is an important measure for ensuring the safety production of coal mines and the safety of miners, and on one hand, enough fresh air is supplied underground to meet the requirement of personnel on oxygen; on the other hand, harmful gas and dust in the well are diluted, and safe production is ensured; in addition, the underground climate can be adjusted, and a good working environment is created. The coal mine ventilation equipment mainly comprises a main ventilator and a local ventilator.
The coal mine safety regulations (2016 edition) specify the settings of main blowers and local blowers, the air volume, the number of blowers, the detection of operations, abnormality processing, and the like. The one hundred and fifty eight rules specify: 2 sets of primary ventilator units of equal capacity must be installed, of which 1 set is on standby and the standby ventilator must be able to be activated within 10 minutes. "the one hundred sixty rule: when the main ventilator stops running, the work must be stopped immediately and the power supply must be cut off, the workers firstly withdraw into the air inlet tunnel, and the leaders of the on-duty mine organize all the workers in the whole mine to go out. One hundred sixty four provisions: the site using local ventilators for air supply must implement wind power blocking and methane power blocking, 2 local ventilators for air supply at the same time must implement wind power blocking and methane power blocking, and 2 local ventilators for air supply at the same time. And performing at least one wind power blocking test and methane power blocking test every 15 days, and performing an automatic switching test of the local ventilator which normally works and the spare local ventilator once every day. The fifth hundred and zero three provisions: the main ventilator and the local ventilator are provided with equipment start and stop sensors. ".
The coal mine safety monitoring system and the detection instrument use management standard (AQ1029-2019) stipulates: the main ventilator and the local ventilator are provided with equipment start and stop sensors. ".
The ventilation safety is important in coal mines, and the starting and stopping of the fan are important devices for detecting the working condition of the fan. The electromechanical equipment start-stop sensors are arranged on a working face, a tunneling face, a fan and the like in a large number, a large number of surrounding power cables exist, electromagnetic interference is strong, vibration movement often occurs, the start-stop sensors are easy to have abnormal state changes on site, the action threshold value needs to be adjusted for many times in site use, the number of the start-stop sensors is large, the environment of the installation position is poor, and burden is brought to debugging and maintenance.
Aiming at the situation of abnormal change of the on-site state of the start-stop sensor, the traditional processing method is to search an interference source and to spatially principle the interference source; additionally, the action threshold is mediated in the field. The method is realized by a manual mode, in the traditional mode, the situations of no processing, wrong processing and the like of maintenance personnel occur occasionally, the mode can only be used by a standard sensor from management, and in the actual situation, the relationship between the responsibility and experience of the maintenance personnel is large, so that the start-stop sensor can not be normally used frequently, the normal detection of electromechanical equipment is influenced, and hidden dangers are brought to the safety production of a coal mine and the safety of miners.
A new idea of start-stop regulation is based on a self-adaptive processing method, sensor hardware supports multi-gear amplification or continuous amplification, software automatically regulates the amplification factor according to data in a period, and two switching thresholds are provided to respectively correspond to equipment start and equipment stop. The method reduces the intensity of field maintenance and improves the stability of the start-stop sensor to a certain extent. The automatic adjustment of the amplification factor needs to be analyzed based on long-term operation data of the sensor, and the method is adjusted based on short-term data of the sensor, so that the adjustment effect is not high.
Problems existing in the prior art:
the traditional scheme is as follows: maintenance personnel are required to go into the well to check the analysis problem, know the installation condition of the sensor and the surrounding electromagnetic distribution condition, and adjust the action threshold value according to experience through the operation data of the sensor. The method has a great responsibility and experience relationship with maintenance personnel, so that the start-stop sensor is frequently maintained or maintained improperly, and the start-stop sensor cannot play the greatest role.
The new idea is as follows: the multi-gear adjusting resistor is added on hardware, and the hardware is automatically adjusted based on data acquired by the sensor in a short period, so that the purpose of automatic adjustment of the sensor is achieved. The method technically realizes the automatic adjustment of the sensor, and solves the problems of non-maintenance, improper maintenance to a certain degree and the like. However, this solution has the following problems: firstly, a sensor collects start-stop information of electromechanical equipment, whether the amplification factor is proper or not is automatically judged through data in a collection period, dynamic adjustment is carried out, the basic data quantity for decision making is too small, and the long-term stable amplification factor is difficult to obtain; and the step-by-step amplification function is provided, and amplification is discontinuous.
Disclosure of Invention
Aiming at the phenomenon, the invention aims to provide an automatic setting method for the action threshold of the electromechanical equipment for the coal mine. The method adopts a coal mine safety monitoring system which must be installed in each coal mine to analyze the operation data of a start-stop sensor, marks the start time and the stop time of the equipment, adopts mutual evidence of the start-stop data of a main fan and the start-stop data of a standby fan, and automatically calculates the switching threshold value of the sensor by the monitoring system and sends the switching threshold value to the sensor, thereby realizing the purpose that the threshold value can be automatically set.
A method for automatically setting an action threshold of electromechanical equipment for a coal mine comprises the following steps: installing a start-stop sensor on the electromechanical equipment to be tested underground, connecting the start-stop sensor into a safety monitoring system to serve as a multi-parameter sensor, and uploading a detection original signal value and an electromechanical equipment state value; the upper computer records and records the real-time values of the start-stop sensor; continuously running, marking the starting time period and the stopping time period of the electromechanical equipment on the upper computer, and executing an automatic adjustment command; the system software automatically analyzes the original signal change condition and the state switching change condition in the period, integrates the effect time, the state stability and the self-learning duration, and automatically calculates the action threshold value and the state switching time; the sensor adjusts the real-time state output and stores the real-time state output, and the upper point is not lost.
The method for automatically setting the action threshold of the electromechanical equipment for the coal mine can automatically set the action threshold and the state response speed based on the safety monitoring system, and provides a new way for field debugging and maintenance of the start-stop sensor. Based on historical big data, factors such as comprehensive response time, state switching stability and self-learning duration are adopted, and upper computer software is adopted to automatically calculate a switching threshold value and response time. The method has obvious effect, and reduces the labor and time cost of debugging and maintenance; the reliability of the equipment use is ensured, and the intelligent level of the safety monitoring system is improved.
Drawings
FIG. 1 is a schematic diagram of a topological structure of an access system of a coal mine underground parking sensor provided by an embodiment of the invention;
FIG. 2 is a schematic diagram of a flow chart of automatic threshold setting provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a state of a fan and a state of a start-stop sensor according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. The following description is, therefore, to be understood as an extension of the idea of a person skilled in the art and not as a limitation of the invention.
In order to clearly describe all features of an actual embodiment. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. It will of course be appreciated that in the development of any such actual embodiment, numerous implementation-specific details must be set forth in order to achieve the developer's specific goals, such as compliance with system-related and business-related constraints, which will vary from one implementation to another. Moreover, it will be appreciated that such a development effort might be complex and time-consuming, but would nevertheless be a routine undertaking for those of ordinary skill in the art.
The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The gist and feature of the present invention will become apparent from the following description. It is to be noted that the drawings are designed in a simplified manner and are intended to have a non-precise ratio for the purpose of facilitating and clearly facilitating the description of embodiments of the invention.
The embodiment of the invention provides a method for automatically setting an action threshold of electromechanical equipment for a coal mine, and as shown in fig. 1, fig. 2 and fig. 3, fig. 1 is a schematic view of a topological structure of an access system of a coal mine underground shutdown sensor provided by the embodiment of the invention; FIG. 2 is a schematic diagram of a flow chart of automatic threshold setting provided by an embodiment of the present invention; fig. 3 is a schematic diagram of a state of a fan and a state of a start-stop sensor according to an embodiment of the present invention. The automatic setting method of the action threshold of the electromechanical equipment for the coal mine comprises the following steps: installing a start-stop sensor on the electromechanical equipment to be tested underground, connecting the start-stop sensor into a safety monitoring system to serve as a multi-parameter sensor, and uploading a detection original signal value and an electromechanical equipment state value; the upper computer records and records the real-time values of the start-stop sensor; continuously running, marking the starting time period and the stopping time period of the electromechanical equipment on the upper computer, and executing an automatic adjustment command; the system software automatically analyzes the original signal change condition and the state switching change condition in the period, integrates the effect time, the state stability and the self-learning duration, and automatically calculates the action threshold value and the state switching time; the sensor adjusts the real-time state output and stores the real-time state output, and the upper point is not lost.
The invention is realized based on a safety monitoring system, provides an automatic setting method of the threshold value of the start-stop sensor of the electromechanical equipment based on the long-term operation rule, and the user only needs to mark the time period of the start-up and the time period of the stop of the air conditioner, and the upper computer software can automatically calculate the proper action threshold value and the response speed, thereby avoiding the labor of manually adjusting the threshold value on site, saving the difficulty of manually selecting and rejecting the threshold value and the intensity of site debugging, providing data support based on long-term historical data, and improving the stability and the intellectualization of the product.
Specifically, the method for automatically setting the threshold value of the start-stop sensor comprises the following steps:
1. and the main fan and the standby fan are provided with start-stop sensors according to relevant regulations, including the steps of separating the start-stop sensors from the interference magnetic field, searching appropriate sensor mounting points, fixing the sensors and the like.
2. The sensor is accessed into the safety monitoring system through the monitoring substation, and data can be normally interacted between the sensor and the monitoring system.
3. The sensor detects electromagnetic field information of the electromechanical device to be detected in real time, the electromagnetic field information is used as a multi-parameter sensor to be communicated with the substation, and original signal values (magnetic field values, corresponding voltage values and the like) and start-stop state values detected by the start-stop sensor are uploaded respectively.
4. The automatic switching test of the local ventilator which normally works and the spare local ventilator should be carried out once a day on site, and the starting time and the stopping time of the equipment are recorded.
5. And manually marking the starting time and the stopping time of the equipment on the upper computer as the self-learning time period of the upper computer through operation for a period of time.
6. The upper computer software analyzes the historical data and comprises the following steps: during the on period of the main fan, the original signal value (SZK-SZK +) of the main fan sensor and the original signal value (SFT-SFT +) of the standby fan sensor; and during the stop of the main fan, the original signal value (SZT-SZT +) of the main fan sensor and the original signal value (SFK-SFK +) of the standby fan sensor.
7. The host computer software analyzes the historical data, and further comprises: during the period that the main fan is started, detecting the time statistics sigma ZK of state switching in the main fan sensor, and detecting the time statistics sigma FT of state switching in the standby fan sensor; and during the stop period of the main fan, detecting the time statistics sigma ZT of state switching in the main fan sensor, and detecting the time statistics sigma FK of state switching in the standby fan sensor.
8. And the upper computer performs comprehensive analysis and comprehensive judgment based on two dimensions of original signal value fluctuation and state switching time, and selects the optimal threshold value and state switching time. In time response, detection stability is taken as a basic basis, the response time of the fan sensor is preferably not more than 1S, and the threshold value of starting and stopping the equipment is satisfied as follows: ST + < STH < SK-. The specific selection needs to be determined by combining response time, original signal fluctuation range and self-learning time, and the system with stable operation takes 1-2 working days as upper computer self-learning time for adjusting the local fan start-stop sensor.
The method for automatically setting the action threshold of the electromechanical equipment for the coal mine can automatically set the action threshold and the state response speed based on the safety monitoring system, and provides a new way for field debugging and maintenance of the start-stop sensor. Based on historical big data, factors such as comprehensive response time, state switching stability and self-learning duration are adopted, and upper computer software is adopted to automatically calculate a switching threshold value and response time. The method has obvious effect, and reduces the labor and time cost of debugging and maintenance; the reliability of the equipment use is ensured, and the intelligent level of the safety monitoring system is improved.
The above description is only for the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all modifications, equivalents, improvements and the like within the spirit and principle of the present invention should be included in the scope of the claims of the present application.
Claims (1)
1. A method for automatically setting an action threshold of electromechanical equipment for a coal mine comprises the following steps: installing a start-stop sensor on the underground electromechanical equipment to be tested, and accessing the start-stop sensor into a safety monitoring system;
characterized in that the method further comprises: the sensor is used as a multi-parameter sensor and uploads a detection original signal value and a state value of the electromechanical equipment;
the upper computer records and records the real-time values of the start-stop sensor;
continuously running, marking the starting time period and the stopping time period of the electromechanical equipment on the upper computer, and executing an automatic adjustment command;
the system software automatically analyzes the original signal change condition and the state switching change condition in the period, integrates the response time, the state stability and the self-learning duration, and automatically calculates the action threshold value and the state switching time;
the sensor adjusts the real-time state output and stores the adjusted real-time state output, and the adjusted real-time state output is not lost when being electrified.
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| CN112462306B (en) * | 2020-11-02 | 2024-02-20 | 天地（常州）自动化股份有限公司 | Anti-interference method for detecting on-off of coal mine electromechanical equipment |
| CN113565551B (en) * | 2021-06-11 | 2023-09-22 | 华能煤炭技术研究有限公司 | Automatic gain control mine ventilation method, device and system |
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