CN110595525A - Method, device, system and medium for monitoring abnormality of downhole sensor - Google Patents
Method, device, system and medium for monitoring abnormality of downhole sensor Download PDFInfo
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Abstract
The embodiment of the invention discloses a method, a device, a system and a medium for monitoring the abnormity of an underground sensor. The method comprises the following steps: acquiring a monitoring value of the sensor in a first period; recording continuously identical values of the monitoring values in the first period and the maximum value of the monitoring values in the first period, and determining whether the sensor is abnormal; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal; an abnormal state is prompted in response to determining that the sensor is abnormal. According to the technical scheme provided by the invention, the abnormal state of the sensor is determined and reminded by monitoring and analyzing the characteristics and the variation trend of the monitoring value of the sensor, so that the technical problem of automatically and accurately finding and prompting the abnormal state of the sensor is effectively solved, and the problem of avoiding supervision by modifying the sensor is avoided.
Description
Technical Field
The embodiment of the invention relates to the field of coal mine safety, in particular to a method, a device, a system and a medium for monitoring the abnormality of an underground sensor.
Background
In the field of coal mining and processing, some units improve the yield, and the sensor is modified to reduce the alarm frequency, so that the management and the inspection of a supervision department are avoided. In order to ensure safe production of coal mines, it is necessary to identify abnormal states of sensors based on characteristics of monitored values of the sensors. At present, the main improvement modes of the sensor are as follows: the technical problems to be solved in the field are how to accurately identify the abnormal state of the sensor by modifying the measuring range of the sensor, shielding the sensor, modifying the precision of the sensor and adjusting the mounting position of the sensor.
Disclosure of Invention
The embodiment of the invention aims to provide a method, a device, a system and a medium for monitoring the abnormity of an underground sensor, which are used for solving the problem that the automatic monitoring of the inclined shaft transportation and loading condition cannot be realized at present.
In order to achieve the above object, the embodiments of the present invention mainly provide the following technical solutions:
in a first aspect, an embodiment of the present invention provides a method for monitoring abnormality of a downhole sensor, the method including:
acquiring a monitoring value of the sensor in a first period;
recording continuously identical values of the monitoring values in the first period and the maximum value of the monitoring values in the first period, and determining whether the sensor is abnormal;
determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
an abnormal state is prompted in response to determining that the sensor is abnormal.
Further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal includes:
determining whether the maximum value of the monitored value in the first period is equal to a first threshold value in response to recording that the continuously same value of the monitored value in the first period is equal to the maximum value of the monitored value in the first period;
when the maximum value of the monitoring value in the first period is smaller than the first threshold value, determining that the sensor is abnormal, and prompting that the abnormal state is that the range of the sensor is adjusted;
further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal, the method further comprises the following steps:
and acquiring a monitoring value of the sensor in a second period, and determining whether the variance of the monitoring value in the second period is smaller than a second threshold value.
And determining that the sensor is abnormal in response to the fact that the variance of the monitoring value in the second period is smaller than the second threshold and the monitoring value in the second period is smaller than the third threshold, and prompting that the abnormal state is that the sensor is shielded.
Further, according to the distribution of the monitoring values in the first period, determining the coal mining period and the non-coal mining period comprises the following steps:
equally dividing the first period, and determining a monitoring value of each equally divided period;
and determining a coal mining period and a non-coal mining period according to whether the slope of the monitoring values of the adjacent equally divided periods is smaller than a fourth threshold and whether the total duration of the adjacent equally divided periods exceeds a fifth threshold.
Further, comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal comprises:
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the initial state;
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the non-initial state;
and determining that the sensor is abnormal in response to the difference value in the initial state being larger than the difference value in the non-initial state.
Further, when the difference value in the initial state is larger than the difference value in the non-initial state, determining that the sensor is abnormal, further comprising:
determining the ratio of the monitoring value in the coal mining period in the initial state to the monitoring value in the coal mining period in the non-initial state, and the ratio of the monitoring value in the non-coal mining period in the initial state to the monitoring value in the non-coal mining period in the non-initial state;
in response to the fact that the variance of the ratio of the coal mining period to the ratio of the non-coal mining period is smaller than a sixth threshold value, prompting that the sensor precision is adjusted in an abnormal state;
and prompting the abnormal state that the sensor position is moved downwards in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is not smaller than a sixth threshold value.
Further, the prompting of the abnormal state is that the sensor position is moved downwards further comprises:
the distance of the sensor from the ceiling is determined by the following formula:
Hn＝(a1-an) H + H, wherein HnIs the distance of the sensor from the top plate, a1Is the average of the monitored values during coal mining in the initial state, anThe average value of the monitoring values in the coal mining period under the non-initial state is shown, H is a sensor parameter, and H is a preset value.
In a second aspect, an embodiment of the present invention further provides an apparatus for monitoring an abnormality of a downhole sensor, the apparatus including: a detection unit, an analysis unit and a prompt unit, wherein,
the detection unit is used for acquiring a monitoring value of the sensor in a first period;
the analysis unit is used for recording continuous same values of the monitoring values in the first period and the maximum value of the monitoring values in the first period and determining whether the sensor is abnormal or not; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting unit is used for prompting the abnormal state in response to the fact that the sensor is determined to be abnormal.
Further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal includes:
determining whether the maximum value of the monitored value in the first period is equal to a first threshold value in response to recording that the continuously same value of the monitored value in the first period is equal to the maximum value of the monitored value in the first period;
and when the maximum value of the monitoring value in the first period is smaller than the first threshold value, determining that the sensor is abnormal, and prompting that the abnormal state is that the range of the sensor is adjusted.
Further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal, the method further comprises the following steps:
acquiring a monitoring value of the sensor in a second period, and determining whether the variance of the monitoring value in the second period is smaller than a second threshold value;
and determining that the sensor is abnormal in response to the fact that the variance of the monitoring value in the second period is smaller than the second threshold and the monitoring value in the second period is smaller than the third threshold, and prompting that the abnormal state is that the sensor is shielded.
Further, according to the distribution of the monitoring values in the first period, determining the coal mining period and the non-coal mining period comprises the following steps:
equally dividing the first period, and determining a monitoring value of each equally divided period;
and determining a coal mining period and a non-coal mining period according to whether the slope of the monitoring values of the adjacent equally divided periods is smaller than a fourth threshold and whether the total duration of the adjacent equally divided periods exceeds a fifth threshold.
Further, comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal comprises:
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the initial state;
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the non-initial state;
and determining that the sensor is abnormal in response to the difference value in the initial state being larger than the difference value in the non-initial state.
Further, when the difference value in the initial state is larger than the difference value in the non-initial state, determining that the sensor is abnormal, further comprising:
determining the ratio of the monitoring value in the coal mining period in the initial state to the monitoring value in the coal mining period in the non-initial state, and the ratio of the monitoring value in the non-coal mining period in the initial state to the monitoring value in the non-coal mining period in the non-initial state;
in response to the fact that the variance of the ratio of the coal mining period to the ratio of the non-coal mining period is smaller than a sixth threshold value, prompting that the sensor precision is adjusted in an abnormal state;
and prompting the abnormal state that the sensor position is moved downwards in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is not smaller than a sixth threshold value.
Further, the prompting of the abnormal state is that the sensor position is moved downwards further comprises:
the distance of the sensor from the ceiling is determined by the following formula:
Hn＝(a1-an) H + H, wherein HnIs the distance of the sensor from the top plate, a1Is the average of the monitored values during coal mining in the initial state, anThe average value of the monitoring values in the coal mining period under the non-initial state is shown, H is a sensor parameter, and H is a preset value.
In a third aspect, an embodiment of the present invention further provides a system for monitoring an abnormality of a downhole sensor, where the system includes: at least one sensor, at least one processor, at least one prompting device, wherein,
the sensor is used for acquiring a monitoring value of the sensor in a first period;
the processor is used for recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period and determining whether the sensor is abnormal or not; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting device is used for prompting the abnormal state in response to the abnormal sensor.
In a fourth aspect, embodiments of the present invention further provide a storage medium for monitoring downhole sensor abnormalities, the storage medium containing one or more program instructions,
wherein one or more program instructions are operable to be executed to perform the method steps of any of the above-described methods of monitoring downhole sensors for anomalies.
The technical scheme provided by the embodiment of the invention at least has the following advantages:
by monitoring and analyzing the characteristics and the variation trend of the monitoring numerical value of the sensor, the abnormal state of the sensor is further determined and reminded, the technical problem of how to automatically and accurately find the abnormal state of the sensor and prompt the abnormal state of the sensor is effectively solved, and the problem of avoiding supervision by modifying the sensor is avoided.
Drawings
Fig. 1 is a flowchart of a method for monitoring abnormality of a downhole sensor according to embodiment 1 of the present invention.
Fig. 2 is a schematic structural diagram of an apparatus for monitoring abnormality of a downhole sensor according to embodiment 2 of the present invention.
Fig. 3 is a schematic structural diagram of a system for monitoring abnormality of a downhole sensor according to embodiment 3 of the present invention.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular system structures, interfaces, techniques, etc. in order to provide a thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, circuits, and methods are omitted so as not to obscure the description of the present invention with unnecessary detail.
Hereinafter, a method for monitoring abnormality of a downhole sensor will be described in detail, and the method has many application scenarios, in this embodiment, only a coal mine monitoring scenario is taken as an example for description, and as shown in fig. 1, the method has the following steps:
step 110: and acquiring a monitoring value of the sensor in a first period.
Preferably, monitoring values are obtained for a short period of the coal face, for example a working day.
Optionally, the types of sensors include, but are not limited to, one or more of the following:
a methane sensor: the device for continuously monitoring the methane concentration in the mine environment gas and in the pumping pipeline generally has the functions of display and audible and visual alarm.
A wind speed sensor: a device for continuously monitoring wind speed in a mine roadway.
A wind pressure sensor: the device for continuously monitoring the ventilation pressure of the mine ventilator, the air door, the closed tunnel, the ventilation tunnel and the like.
Carbon monoxide sensor: a device for continuously monitoring the concentration of carbon monoxide in the gas in the mine environment.
A temperature sensor: the device is used for continuously monitoring the temperature of the mine environment.
A smoke sensor: a device for continuously monitoring smoke generated in a mine when a belt of a belt conveyor or the like catches fire.
Step 120: and recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal.
Specifically, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal includes: determining whether the maximum value of the monitored value in the first period is equal to a first threshold value in response to recording that the continuously same value of the monitored value in the first period is equal to the maximum value of the monitored value in the first period; and when the maximum value of the monitoring value in the first period is smaller than a first threshold value, determining that the sensor is abnormal, and prompting that the abnormal state is that the range of the sensor is adjusted.
Specifically, the method includes the steps of recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal, and further includes: acquiring a monitoring value of the sensor in a second period, and determining whether the variance of the monitoring value in the second period is smaller than a second threshold value; and determining that the sensor is abnormal in response to the fact that the variance of the monitoring value in the second period is smaller than the second threshold and the monitoring value in the second period is smaller than the third threshold, and prompting that the abnormal state is that the sensor is shielded.
Preferably, the monitored values are obtained over a longer period of the coal face, for example a natural month.
For example, sensor data of a coal mine working face is acquired through the system, and the sensor data is compared. First, it is determined whether consecutive points are at the same value within 1 working day and there is no sensor value above that data value. If so, step 120A is performed, otherwise step 120B is performed.
Step 120 a: and (3) obtaining the standard measuring range m of the known sensor, and checking the size relation between the monitored numerical peak value n and the m of the sensor. If n is m, the value of the sensor exceeds the standard measuring range, and the data is abnormal; otherwise n < m, the range of the sensor may be adjusted and prompted.
Step 120 b: it is determined whether the sensor value is at a more stable value within 1 month, e.g., the variance is less than 0.02, and the sensor value is lower, e.g., less than 0.1. If yes, the sensing head of the sensor can be shielded by a shielding object and prompt; otherwise, step 130 is performed.
Step 130: determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; and comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal.
Specifically, according to the distribution of the monitoring values in the first period, determining the coal mining period and the non-coal mining period comprises the following steps: equally dividing the first period, and determining a monitoring value of each equally divided period; and determining the coal mining period and the non-coal mining period according to whether the slope of the monitoring values of the adjacent equally divided periods is smaller than a fourth threshold and whether the total duration of the adjacent equally divided periods exceeds a fifth threshold.
Preferably, the first period is divided equally, preferably into 48 equal parts of 1 working day, i.e. into 48 half-hours.
For example, the sensor values of one day are divided into 48 segments by time average, the average of the monitoring values is calculated every half hour, and the values of the adjacent data of each segment are compared. Since the coal mining period measurement values may continuously change, the non-coal mining period measurement values may tend to stabilize. The average of the measured values is calculated over half an hour, the slope of two adjacent averages over the day is calculated, and the slope limit is 0 when the average changes very little over half an hour. And (3) solving a primary slope of the obtained slope value because the adjacent average value has small change amplitude and the time at least exceeds half of a shift in a part of time periods in the coal mining time, and screening the time period in which the secondary slope limit value is 0 and the time at least exceeds half of the shift, namely the non-coal mining time period.
Specifically, comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal includes: determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the initial state; determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the non-initial state; determining that the sensor is abnormal in response to the difference value in the initial state being greater than the difference value in the non-initial state.
Specifically, when the difference value in the initial state is larger than the difference value in the non-initial state, determining that the sensor is abnormal, further includes: determining the ratio of the monitoring value in the coal mining period in the initial state to the monitoring value in the coal mining period in the non-initial state, and the ratio of the monitoring value in the non-coal mining period in the initial state to the monitoring value in the non-coal mining period in the non-initial state; in response to the fact that the variance of the ratio of the coal mining period to the ratio of the non-coal mining period is smaller than a sixth threshold value, prompting that the sensor precision is adjusted in an abnormal state; and prompting the abnormal state that the sensor position is moved downwards in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is not smaller than a sixth threshold value.
For example, to compare the average values of the sensor values during coal mining and non-coal mining on a daily basis, the initial sensor installation duration T is set1The average value of the sensor values during the coal mining in time is a1，T1The average value of the sensor values in the non-coal mining period in time is b1. Setting T1Every T after time2The average value of the sensor values during the coal mining in the time period is an，T1Every T after time2The average value of the sensor values in the non-coal mining period in the time period is bn。
Comparison T1And T2Inner c1＝a1-b1、cn＝an-bnJudgment of T2Inner c1>cnWhether the data is normal or not is judged, and if not, the data is normal; otherwise, the sensor is determined to be abnormal, and the abnormal state is further judged to be that the accuracy of the sensor is adjusted or the installation position of the sensor is moved downwards.
Separately calculate T1And T2Inner mean numerical ratio d1、f1，d1＝a1/an，f1＝b1/bn. Judgment of d1And f1Whether it fluctuates around a value, if d1And f1If all the conditions are met, the fact that the sensor accuracy is adjusted to cause the abnormality of the uploaded data of the sensor is shown, and prompt is performed.
Specifically, the prompting of the abnormal state is that the sensor position is moved downwards further includes: determining the distance of the sensor from the ceiling by the formula: hn＝(a1-an) H + H, wherein HnIs the distance of the sensor from the top plate, a1Is the average of the monitored values during coal mining in the initial state, anThe average value of the monitoring values in the coal mining period under the non-initial state is shown, H is a sensor parameter, and H is a preset value.
For example, according to the coal mine safety regulation, each type of sensor is not more than H mm away from the top plate, and H is used as a preset value to be calculated. Assuming that the sensor value drops by an h value every 1 mm of the mounting position. The value of h can be obtained through manual input, a local system or a cloud. The known installation position of the sensor is H mm away from the top plate, and the position of the sensor after descending is set as the distance H from the top platenAnd (4) millimeter. By the formula Hn＝(a1-an) And H + H, calculating the distance between the current position and the top plate. Calculating T1And T2Inner descending distance: h2＝H n-H. Counting all descending distances and findingThe distance range of the sensor mounting position falling is calculated and presented up to the maximum value and the minimum value of the falling distance.
Alternatively, the concept of the top plate described in the present embodiment may also be applied to the concept of the top beam or the roof.
Step 140: an abnormal state is prompted in response to determining that the sensor is abnormal.
Optionally, the manner of prompting includes, but is not limited to, one or more of the following:
sound, light, text, short message, WeChat and telephone.
Optionally, the prompted objects include, but are not limited to, one or more of the following:
staff, local system and server.
Corresponding to the foregoing embodiment 1, embodiment 2 of the present invention further provides a device for monitoring an abnormality of a downhole sensor, specifically as shown in fig. 2, the device includes: a detection unit 201, an analysis unit 202, a prompt unit 203, wherein,
the detection unit 201 is configured to obtain a monitoring value of the sensor in a first period;
the analysis unit 202 is configured to record a value of the continuously same monitored value in the first period and a maximum value of the monitored value in the first period, and determine whether the sensor is abnormal; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting unit 203 is used for prompting an abnormal state in response to the determination that the sensor is abnormal.
Further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal includes:
determining whether the maximum value of the monitored value in the first period is equal to a first threshold value in response to recording that the continuously same value of the monitored value in the first period is equal to the maximum value of the monitored value in the first period;
and when the maximum value of the monitoring value in the first period is smaller than the first threshold value, determining that the sensor is abnormal, and prompting that the abnormal state is that the range of the sensor is adjusted.
Further, recording the continuously same value of the monitoring value in the first period and the maximum value of the monitoring value in the first period, and determining whether the sensor is abnormal, the method further comprises the following steps:
acquiring a monitoring value of the sensor in a second period, and determining whether the variance of the monitoring value in the second period is smaller than a second threshold value;
and determining that the sensor is abnormal in response to the fact that the variance of the monitoring value in the second period is smaller than the second threshold and the monitoring value in the second period is smaller than the third threshold, and prompting that the abnormal state is that the sensor is shielded.
Further, according to the distribution of the monitoring values in the first period, determining the coal mining period and the non-coal mining period comprises the following steps:
equally dividing the first period, and determining a monitoring value of each equally divided period;
and determining a coal mining period and a non-coal mining period according to whether the slope of the monitoring values of the adjacent equally divided periods is smaller than a fourth threshold and whether the total duration of the adjacent equally divided periods exceeds a fifth threshold.
Further, comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal comprises:
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the initial state;
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the non-initial state;
and determining that the sensor is abnormal in response to the difference value in the initial state being larger than the difference value in the non-initial state.
Further, when the difference value in the initial state is larger than the difference value in the non-initial state, determining that the sensor is abnormal, further comprising:
determining the ratio of the monitoring value in the coal mining period in the initial state to the monitoring value in the coal mining period in the non-initial state, and the ratio of the monitoring value in the non-coal mining period in the initial state to the monitoring value in the non-coal mining period in the non-initial state;
in response to the fact that the variance of the ratio of the coal mining period to the ratio of the non-coal mining period is smaller than a sixth threshold value, prompting that the sensor precision is adjusted in an abnormal state;
and prompting the abnormal state that the sensor position is moved downwards in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is not smaller than a sixth threshold value.
Further, the prompting of the abnormal state is that the sensor position is moved downwards further comprises:
the distance of the sensor from the ceiling is determined by the following formula:
Hn＝(a1-an) H + H, wherein HnIs the distance of the sensor from the top plate, a1Is the average of the monitored values during coal mining in the initial state, anThe average value of the monitoring values in the coal mining period under the non-initial state is shown, H is a sensor parameter, and H is a preset value.
Corresponding to the above embodiment 1, embodiment 3 of the present invention further provides a system for monitoring an abnormality of a downhole sensor, specifically as shown in fig. 3, the apparatus includes: at least one sensor 301, at least one processor 302, at least one prompting device 303, wherein,
the sensor 301 is used for acquiring a monitoring value of the sensor in a first period;
the processor 302 is configured to record a value of a monitoring value continuously identical in the first period and a maximum value of the monitoring value in the first period, and determine whether the sensor is abnormal; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting device 303 is configured to prompt an abnormal state in response to determining that the sensor is abnormal.
In correspondence with the above-described embodiments, embodiment 4 of the present invention also provides a storage medium containing one or more program instructions therein. Wherein one or more program instructions are for being executed to perform a method of monitoring downhole sensor anomalies as described above.
In an embodiment of the invention, the processor may be an integrated circuit chip having signal processing capability. The Processor may be a general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA) or other programmable logic device, discrete Gate or transistor logic device, discrete hardware component.
The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The processor reads the information in the storage medium and completes the steps of the method in combination with the hardware.
The storage medium may be a memory, for example, which may be volatile memory or nonvolatile memory, or which may include both volatile and nonvolatile memory.
The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory.
The volatile Memory may be a Random Access Memory (RAM) which serves as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), SLDRAM (SLDRAM), and Direct Rambus RAM (DRRAM).
The storage media described in connection with the embodiments of the invention are intended to comprise, without being limited to, these and any other suitable types of memory.
Those skilled in the art will appreciate that the functionality described in the present invention may be implemented in a combination of hardware and software in one or more of the examples described above. When software is applied, the corresponding functionality may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.
Claims (10)
1. A method of monitoring downhole sensor anomalies, comprising:
acquiring a monitoring value of the sensor in a first period;
recording continuously identical values of the monitoring values in the first period and the maximum value of the monitoring values in the first period, and determining whether the sensor is abnormal;
determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
in response to determining that the sensor is abnormal, an abnormal state is prompted.
2. A method of monitoring a downhole sensor for anomalies as claimed in claim 1, wherein recording successive like values of the monitored value during the first period and a maximum value of the monitored value during the first period, determining if the sensor is anomalous comprises:
determining whether the maximum value of the monitored values in the first period is equal to a first threshold value in response to recording that the continuously same values of the monitored values in the first period are equal to the maximum value of the monitored values in the first period;
and when the maximum value of the monitored values in the first period is smaller than the first threshold value, determining that the sensor is abnormal, and prompting the abnormal state that the sensor measuring range is adjusted.
3. A method of monitoring a downhole sensor for anomalies as claimed in claim 1, wherein the continuously same value of the monitored value during the first period and the maximum value of the monitored value during the first period are recorded to determine if the sensor is anomalous, further comprising:
acquiring a monitoring value of the sensor in a second period, and determining whether the variance of the monitoring value in the second period is smaller than a second threshold value;
and determining that the sensor is abnormal in response to the fact that the variance of the monitoring value in the second period is smaller than a second threshold value and the monitoring value in the second period is smaller than a third threshold value, and prompting that the abnormal state is that the sensor is shielded.
4. A method of monitoring downhole sensor anomalies as claimed in claim 1, wherein determining coal and non-coal mining periods from the distribution of monitored values over the first period comprises:
equally dividing the first period, and determining a monitoring value of each equally divided period;
and determining the coal mining period and the non-coal mining period according to whether the slope of the monitoring values of the adjacent equally divided periods is smaller than a fourth threshold and whether the total duration of the adjacent equally divided periods exceeds a fifth threshold.
5. A method of monitoring for anomalies in a downhole sensor as defined in claim 4, wherein comparing the monitored data for the initial and non-initial conditions to determine if the sensor is anomalous comprises:
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the initial state;
determining the difference value of the monitoring value in the coal mining period and the monitoring value in the non-coal mining period in the non-initial state;
determining that the sensor is abnormal in response to the difference value in the initial state being greater than the difference value in the non-initial state.
6. A method of monitoring a downhole sensor for anomalies as defined in claim 5, wherein determining the sensor is anomalous responsive to the difference at the initial condition being greater than the difference at the non-initial condition, further comprises:
determining the ratio of the monitoring value in the coal mining period in the initial state to the monitoring value in the coal mining period in the non-initial state, and the ratio of the monitoring value in the non-coal mining period in the initial state to the monitoring value in the non-coal mining period in the non-initial state;
prompting that the abnormal state is that the sensor precision is adjusted in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is smaller than a sixth threshold value;
and prompting the abnormal state that the sensor position is moved downwards in response to the fact that the variance of the ratio in the coal mining period and the ratio in the non-coal mining period is not smaller than a sixth threshold value.
7. The method of monitoring for anomalies in a downhole sensor of claim 6, the indication of the anomaly status being a sensor position being moved downward, further comprising:
determining the distance of the sensor from the ceiling by the formula:
Hn＝(a1-an) H + H, wherein HnIs the distance of the sensor from the top plate, a1Is the average of the monitored values during coal mining in the initial state, anThe average value of the monitoring values in the coal mining period under the non-initial state is shown, H is a sensor parameter, and H is a preset value.
8. An apparatus for monitoring downhole sensor anomalies, comprising: a detection unit, an analysis unit and a prompt unit, wherein,
the detection unit is used for acquiring a monitoring value of the sensor in a first period;
the analysis unit is used for recording continuous same values of the monitoring values in the first period and the maximum value of the monitoring values in the first period and determining whether the sensor is abnormal or not; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting unit is used for responding to the abnormal state of the sensor and prompting the abnormal state.
9. A system for monitoring downhole sensor anomalies, comprising: at least one sensor, at least one processor, at least one prompting device, wherein,
the sensor is used for acquiring a monitoring value of the sensor in a first period;
the processor is used for recording the continuously same value of the monitoring numerical value in the first period and the maximum value of the monitoring numerical value in the first period and determining whether the sensor is abnormal or not; determining a coal mining period and a non-coal mining period according to the distribution of the monitoring values in the first period; comparing the monitoring data of the initial state and the non-initial state to determine whether the sensor is abnormal;
the prompting device is used for prompting an abnormal state in response to the fact that the sensor is determined to be abnormal.
10. A storage medium for monitoring downhole sensor abnormalities, comprising one or more program instructions for performing the method of any one of claims 1-7.
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