CN115439990B - Manhole abnormality determination method and device, storage medium and manhole - Google Patents
Manhole abnormality determination method and device, storage medium and manhole Download PDFInfo
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Abstract
The application provides a manhole anomaly determination method, a manhole anomaly determination device, a storage medium and a manhole, wherein the method comprises the following steps: acquiring state information of a protection device of a manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force; determining a spectral characteristic of the vibration signal; if the spectrum characteristics are determined to belong to the abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm. The method solves the problem of high false alarm rate of the existing alarm method, avoids false alarm caused by normal external force impact of the protection device, and reduces false alarm rate and invalid workload of staff.
Description
Technical Field
The application relates to the technical field of security protection, in particular to a manhole abnormality determining method and device, a storage medium and a manhole.
Background
Power and communication cables are important resources for ensuring normal power transmission and communication.
In municipal utility construction, cables for power, communications, etc. departments typically employ buried cable deployments. As shown in fig. 1, the cable is deployed in a pipeline under the ground, and a manhole is provided on the pipeline. Manholes refer to open cell structures or devices for personnel to access equipment or pipes for installation, inspection and safety inspection. The manhole comprises a protector 13, such as a protective cover, 13. A manhole is provided with a sensing device 12 for alarm. In order to avoid the loss of cable resources or line damage caused by abnormal damage or abnormal opening of the protection device 13, the current alarm method is as follows: if the sensing device 12 senses that the protecting device 13 is abnormally opened or is impacted by external force, the sensing device 12 sends warning information to the warning platform 11 so as to give an alarm. The alert information includes an inductive device identification. And the staff checks and maintains the manhole site corresponding to the induction equipment identifier according to the warning information received by the warning platform 11.
The existing alarm method has the problem of high false alarm rate, and the invalid workload of staff is greatly increased.
Disclosure of Invention
The application provides a manhole abnormity determining method, a manhole abnormity determining device, a storage medium and a manhole, which are used for solving the problem of high false alarm rate of the existing alarm method.
In a first aspect, the present application provides a manhole anomaly determination method, including:
acquiring state information of a protection device of a manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force;
determining a spectral characteristic of the vibration signal;
if the spectrum characteristics are determined to belong to the abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm.
Optionally, the determining the spectral feature of the vibration signal includes:
determining a spectral energy characteristic and a spectral distribution characteristic of the vibration signal;
if the abnormal external force spectrum characteristic is determined to belong to an abnormal threshold range, determining that the protection device is impacted by the abnormal external force comprises:
if the spectrum energy characteristics are determined to belong to a first threshold range, and the spectrum distribution characteristics are determined to belong to a second threshold range, the protection device is determined to be impacted by abnormal external force.
Optionally, the determining the spectral energy characteristic and the spectral distribution characteristic of the vibration signal includes:
performing frequency domain conversion processing on the vibration signal to obtain a frequency spectrum sequence X; the spectral sequence X is defined by X (f i ) A set of components;
based on the spectral sequence X, a spectral energy characteristic M of the vibration signal is determined as follows ratio And spectral distribution characteristics IQR spe ：
And x (f) i )∈X；
IQR spe ＝Quartile(X<Sub>win</Sub>,75)-Quartile(X<Sub>win</Sub>,25)；
wherein ,f s is the sampling frequency of the vibration signal; n is the sampling point number of the vibration signal, and N is more than or equal to 1; f (f) min and fmax The boundary frequency of the characteristic spectrum window is preset; e is white noise energy with a spectral value of 1 in a characteristic spectrum window, or E is a constant of 1000; x is X<Sub>win</Sub>For X (f) belonging to a first threshold range in the spectrum sequence X i ) A set of components; quartile (X)<Sub>win</Sub>75) is X<Sub>win</Sub>Is the third quartile of (c); quartile (X)<Sub>win</Sub>25) is X<Sub>win</Sub>Is the first quartile of (c).
Optionally, if it is determined that the spectral energy feature belongs to the first threshold range and the spectral distribution feature belongs to the second threshold range, determining that the protection device is impacted by the abnormal external force includes:
if the spectrum energy characteristic of 0.55> is more than or equal to 0.3 and the spectrum distribution characteristic of 0.65> is more than or equal to 0.45, determining that the protection device is impacted by abnormal external force.
Optionally, the state information further includes a vertical distance and a first included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the first included angle is the included angle between the protection device of the manhole and the manhole ring;
after said determining the spectral characteristics of the vibration signal, the method further comprises:
if the spectrum characteristic is determined not to belong to the abnormal threshold range, the state information further comprises abnormal unlocking information representing abnormal damage to the protection lock of the manhole, the vertical distance is smaller than a first distance threshold, the first included angle is smaller than a first angle threshold, and the protection lock of the manhole is determined to be abnormally damaged and the protection device is not abnormal;
and sending warning information representing the abnormality of the protection lock to a warning platform so as to give an alarm.
Optionally, the state information further includes a vertical distance and a first included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the first included angle is the included angle between the protection device of the manhole and the manhole ring;
after said determining the spectral characteristics of the vibration signal, the method further comprises:
If the spectrum characteristics are determined not to belong to the abnormal threshold range, the state information further comprises abnormal unlocking information representing abnormal damage to the protection lock of the manhole, and at least one of the following conditions is met, the protection device is determined to be abnormally opened, and warning information representing abnormal opening of the protection device is sent to a warning platform so as to give an alarm:
the vertical distance is greater than or equal to a first distance threshold;
the first included angle is greater than or equal to a first angle threshold.
Optionally, the state information further includes a vertical distance and a second included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the second included angle is the included angle between the protection device of the manhole and the ground;
after said determining the spectral characteristics of the vibration signal, the method further comprises:
and if the spectrum characteristics are determined not to belong to the abnormal threshold range, the second included angle is larger than or equal to a second angle threshold, and the vertical distance is smaller than or equal to a second distance threshold, the manhole is determined to be shifted, and accordingly an alarm is given.
In a second aspect, the present application provides a manhole anomaly determination apparatus, the apparatus comprising:
A transceiver module and a processing module;
the receiving and transmitting module is used for acquiring state information of a protection device of the manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force;
the processing module is used for determining the frequency spectrum characteristics of the vibration signal; if the spectrum characteristics are determined to belong to the abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm.
In a third aspect, the present application provides a manhole anomaly determination apparatus, the apparatus comprising:
a processor and a memory;
the memory stores executable instructions executable by the processor;
wherein the processor executes the executable instructions stored by the memory, causing the processor to perform the method as described above.
In a fourth aspect, the present application provides a storage medium having stored therein computer-executable instructions for performing the method as described above when executed by a processor.
In a fifth aspect, the present application provides a manhole comprising:
a protection device and a manhole abnormality determination device;
the manhole abnormality determining device is used for obtaining state information of a protecting device of a manhole, wherein the state information comprises a vibration signal of the protecting device impacted by external force; determining a spectral characteristic of the vibration signal; if the spectrum characteristics are determined to belong to the abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm.
According to the manhole abnormality determination method, the manhole abnormality determination device, the storage medium and the manhole, the protection device is determined to be impacted by abnormal external force through determining that the frequency spectrum characteristics of the vibration signal belong to the abnormal threshold range so as to alarm. The application solves the problem of high false alarm rate in the existing alarm method, and reduces false alarm rate and invalid workload of staff.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a diagram of a prior art alarm method system architecture;
FIG. 2 is a system architecture diagram for manhole anomaly determination provided by an embodiment of the present application;
FIG. 3 is a flowchart of a manhole anomaly determination method provided by an embodiment of the present application;
fig. 4 is a first structural diagram of a manhole abnormality determination apparatus according to an embodiment of the present application;
FIG. 5 is a second configuration diagram of a manhole abnormality determination apparatus according to an embodiment of the present application;
fig. 6 is a manhole structure diagram provided in an embodiment of the present application.
Specific embodiments of the present application have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
In municipal utility construction, cables for power, communications, etc. departments typically employ buried cable deployments. As shown in fig. 1, the cable is deployed in a pipeline under the ground, and a manhole is provided on the pipeline. The manhole ring 14 of the manhole is usually fixed in the concrete under the ground, and the protector 13 of the manhole is locked with the manhole ring 14 by a protector lock 15 to fix the protector 13 on the manhole ring 14. The protection lock 15 is connected to the sensing device 12, and when the protection lock 15 is abnormally broken, the protection lock 15 transmits abnormal unlocking information to the sensing device 12. The sensing device 12 sends warning information to the warning platform 11 based on the received abnormal unlocking information to give an alarm. In addition, the sensing device 12 senses that the protecting device 13 is impacted by external force, and the sensing device 12 also sends warning information to the warning platform 12 for warning. The protection lock 15 is abnormally broken, and for example, the protection lock 15 is unlocked in the case where authority authentication is not performed or is not passed. Abnormal destruction of the lock 15 characterizes the abnormal opening of the guard 13 in the existing alarm method. The sensing device 12 sends warning information to the warning platform 11 based on the received abnormal unlocking information. In addition, the protection cover is rolled by the automobile, the surrounding construction of the protection cover, the accidental heavy object impacts the protection cover, the protection device 13 is forcedly damaged by non-staff by adopting external force, and the like, so that the protection device 13 is impacted by the external force. Once the sensing equipment 12 senses that the protecting device 13 is impacted by external force, warning information is sent to the warning platform 12 to give an alarm. The staff checks and maintains the manhole in time on site according to the warning information received by the warning platform 11, so as to avoid the loss of cable resources or line damage caused by abnormal damage or abnormal opening of the protection device of the manhole.
The external force impact generated by the protection device 13 forced to be damaged by the external force is abnormal external force impact. The protection device 13 is impacted by an abnormal external force, which causes the protection device 13 to be damaged or opened abnormally. The alarm caused by the abnormal external force impact is normal alarm. The staff can timely check and maintain the manhole on site according to the warning information caused by the abnormal external force impact, so that the damage behavior of non-staff can be timely and effectively prevented, and the loss of cable resources or line damage is avoided.
The rolling guard 13 of the automobile, the construction around the guard 13, and the external force impact generated by the accidental heavy object striking the guard 13 are generally normal external force impact. Normal external impact does not cause damage or opening of the guard 13. The alarm caused by normal external force impact is false alarm, and the work that the staff checks and maintains on the manhole site according to the alarm information caused by normal external force impact belongs to invalid work. The invalid work will cause waste of resources such as manpower, maintenance resources, etc.
The existing induction equipment cannot determine whether the external force impact received by the protection device contains abnormal external force impact or not, and therefore the false alarm rate is high. Therefore, the existing alarm method has the problem of high false alarm rate, so that the invalid workload of staff is greatly increased, and the waste of manpower and maintenance resources is caused.
In this regard, the present application proposes a manhole abnormality determination method based on the determined spectrum characteristics of the vibration of the protective cover under different types of external force impacts by researching and testing the spectrum characteristics of the protective cover as the protective device under different types of external force impacts. According to the manhole abnormity determining method, the state information of the protection device of the manhole is obtained, wherein the state information comprises a vibration signal of the protection device impacted by external force; determining a spectral characteristic of the vibration signal; if the frequency spectrum characteristics of the vibration signals are determined to belong to the abnormal threshold range, the protection device is determined to be impacted by abnormal external force so as to alarm. According to the manhole abnormity determining method provided by the application, the problem of high false alarm rate in the existing alarm method is solved by alarming after the protection device is determined to be impacted by abnormal external force, and the false alarm rate and the invalid workload of staff are reduced.
The manhole abnormality determination method provided by the present application will be described with reference to some embodiments.
Fig. 2 is a system architecture diagram for manhole anomaly determination according to an embodiment of the present application. As shown in fig. 2, the system includes: alert platform 11, anomaly determination device 21 and manhole. The manhole includes a protector 13, a manhole ring 14, and a protector lock 15 locking the protector 13 and the manhole ring 14. The abnormality determining apparatus 21 acquires the state information of the guard 13. The status information includes a vibration signal of the guard 13 that is impacted by an external force. As shown in fig. 2, the abnormality determining apparatus 21 may be provided on the protector 13 of the manhole. The abnormality determining device 21 determines an abnormal external force spectrum characteristic of the vibration signal, and if it is determined that the abnormal external force spectrum characteristic belongs to the abnormal threshold range, it is determined that the protection apparatus 13 is subjected to abnormal external force impact to alarm. The protection device 13 is impacted by abnormal external force to represent the manhole abnormal. The abnormal threshold range is used for judging whether the vibration signal of the protection device contains the vibration signal of abnormal external force impact. The abnormality determining apparatus 21 transmits first warning information to the warning platform 11 to give an alarm if it is determined that the protection device 13 is impacted by an abnormal external force. Alternatively, the communication between the abnormality determining device 21 and the alert platform 11 may be in a wireless communication manner. The first warning information includes an identification of the abnormality determination device 21. The staff performs inspection and maintenance to the manhole site corresponding to the identification of the abnormality determining device 21 according to the first warning information received by the warning platform 11.
Alternatively, the abnormality determining apparatus 21 determines the spectral characteristics of the vibration signal, and if it is determined that the spectral characteristics do not belong to the abnormality threshold range, it is determined that the guard 13 is not subjected to abnormal external force impact, or it is determined that the guard 13 is subjected to normal external force impact only, and the abnormality determining apparatus 21 does not transmit warning information to the warning platform 11.
According to the manhole abnormity determining method provided by the embodiment of the application, the protection device is determined to be impacted by abnormal external force by determining that the frequency spectrum characteristic of the vibration signal belongs to the abnormal threshold range so as to alarm, so that the problem of high false alarm of the existing alarm method is solved, and the false alarm rate and the invalid workload of staff are greatly reduced.
The manhole abnormality determination method provided by the present application is described in detail with reference to fig. 3. Fig. 3 is a flowchart of a manhole abnormality determination method according to an embodiment of the present application. The execution subject of the embodiment shown in fig. 3 may be the abnormality determination device 21 in the embodiment shown in fig. 2. As shown in fig. 3, the method includes:
s301, acquiring state information of a protection device of the manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force.
Specifically, the abnormality determining apparatus 21 acquires the state information of the protector 13 of the manhole, the state information including a vibration signal of the protector 13 subjected to the external force impact.
Illustratively, the abnormality determining apparatus 21 may acquire, from a vibration sensor on the guard 13, a vibration signal of the guard 13 acquired by the vibration sensor. The vibration sensor may be sampled in a 24-bit analog-to-digital (AD) sample.
S302, determining the frequency spectrum characteristics of the vibration signal.
Specifically, the abnormality determining apparatus 21 determines the spectral characteristics of the vibration signal.
In general, the spectral energy characteristic and the spectral distribution characteristic are important characteristics of the vibration spectrum, and the characteristic and the type of the vibration spectrum corresponding to the vibration signal can be accurately determined by adopting the spectral energy characteristic and the spectral distribution characteristic.
Alternatively, the abnormality determining device 21 determines the spectral energy characteristic and the spectral distribution characteristic of the vibration signal.
Illustratively, since the vibration signal is a time-domain signal, the abnormality determining apparatus 21 performs frequency-domain conversion processing on the vibration signal to obtain the spectrum sequence X. The spectral sequence X is defined by X (f i ) A set of components. The abnormality determining device 21 determines the spectral energy characteristics M of the vibration signal based on the spectral sequence X as shown in the following formulas (1) and (2) ratio And spectral distribution characteristics IQR spe ：
IQR spe ＝
Quartile(X<Sub>win</Sub>,75)-Quartile(X<Sub>win</Sub>,25)；(2)
wherein ,f s is the sampling frequency of the vibration signal; n is the sampling point number of the vibration signal, and N is more than or equal to 1; f (f) min and fmax The boundary frequency of the characteristic spectrum window is preset; e is white noise energy with a spectral value of 1 in a characteristic spectrum window, or E is a constant of 1000; x is X<Sub>win</Sub>For X (f) belonging to a first threshold range in the spectrum sequence X i ) A set of components; quartile (X)<Sub>win</Sub>75) is X<Sub>win</Sub>Is the third quartile of (c); quartile (X)<Sub>win</Sub>25) is X<Sub>win</Sub>Is the first quartile of (c).
Assume that the first threshold range is 0.55>T1 is more than or equal to 0.3, and the spectrum sequence X satisfies 0.55>x(f i ) X (f) of 0.3 or more i ) The set is X<Sub>win</Sub>. T1 is a first threshold.
Alternatively, the abnormality determining device 21 may fourier-transform the vibration signal to obtain the spectrum sequence X.
Through the research and test of the frequency spectrum characteristics of the vibration spectrum corresponding to the vibration signals of the protective cover subjected to different types of external force impact, the frequency spectrum characteristics of the vibration spectrum of the protective cover under different types of external force impact are obtained: (1) when the protective cover is forcedly damaged by external force, the frequency spectrum characteristic of the vibration frequency spectrum of the protective cover impacted by the external force is that the horizontal noise is lifted up due to the random vibration with lower frequency, and the frequency energy is intensively distributed in the frequency range of 800 Hz-1500 Hz; (2) when the automobile rolls the protective cover, the frequency spectrum characteristic of the vibration frequency spectrum of the protective cover subjected to external force impact is that the frequency is raised along with the horizon noise caused by higher random vibration, and the frequency energy is mainly distributed in Within the frequency range of 700Hz to 2200 Hz; (3) when the impact drill is constructed around the protective cover to impact the ground, the frequency spectrum of the vibration spectrum of the protective cover impacted by external force has the frequency that the horizontal noise caused by the random vibration with very high frequency is lifted, and the frequency energy is uniformly distributed in the frequency range of 500 Hz-2000 Hz. According to the spectral characteristics of the vibration spectrum of the protective cover under the impact of the three types of external forces (1) - (3), optionally, the frequency range of the characteristic spectrum window may be set to 700Hz to 1700Hz; or, set f min ＝700Hz，f max ＝1700Hz。
According to the spectrum characteristics of the vibration spectrum of the protection cover subjected to abnormal external force impact in the example (1) and the spectrum characteristics of the vibration spectrum of the protection cover subjected to normal external force impact in the example (2) and (3), by combining the characteristic spectrum window of 700 Hz-1700 Hz, the spectrum characteristic value M of the vibration spectrum in the characteristic spectrum window in the vibration signal can be accurately determined by adopting the formulas (1) and (2) ratio and IQRspe . The spectrum characteristics determined in the step are processed according to the subsequent step S303, so that it can be accurately determined whether the vibration signal contains the vibration signal caused by the abnormal external force impact, and further, whether the protection device 13 is impacted by the abnormal external force or not.
And S303, if the spectrum characteristics are determined to belong to the abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm.
Specifically, the spectrum characteristics of the vibration spectrum caused by the abnormal external force impact have a corresponding abnormal threshold range, and the vibration signal may include both the vibration signal of the abnormal external force impact and the vibration signal of the normal external force impact. By combining the abnormal threshold range and the frequency spectrum characteristics of the vibration signal, whether the vibration signal contains the vibration signal of abnormal external force impact or not can be accurately determined, and whether the protection device 13 is impacted by the abnormal external force or not can be accurately determined. Therefore, if the abnormality determining apparatus 21 determines that the spectral characteristics of the vibration signal belong to the abnormality threshold range, the abnormality determining apparatus 21 determines that the guard 13 is subjected to an abnormal external force impact to alarm.
Optionally, the abnormal threshold range includes a first threshold range and a second threshold range. If the abnormality determining apparatus 21 determines that the spectral energy characteristic belongs to the first threshold range and the spectral distribution characteristic belongs to the second threshold range, the abnormality determining apparatus 21 determines that the protection device 13 is subjected to an abnormal external force impact. Accordingly, if the abnormality determining device 21 determines that the spectral energy characteristic does not belong to the first threshold range and/or the spectral distribution characteristic does not belong to the second threshold range, the abnormality determining device 21 determines that the protection apparatus 13 is not impacted by an abnormal external force or is impacted by a normal external force, and the abnormality determining device 21 does not alarm.
Exemplary, if the abnormality determination device 21 determines 0.55>The spectral energy characteristic is more than or equal to 0.3 and is 0.65>If the spectrum distribution characteristic is equal to or more than 0.45, the abnormality determination device 21 determines that the protection device 13 is impacted by an abnormal external force. That is, if the abnormality determination device 21 determines 0.55>M ratio More than or equal to 0.3, and 0.65>IQR spe And 0.45 or more, the abnormality determining apparatus 21 determines that the protection device 13 is subjected to an abnormal external force impact.
Further, after the abnormality determining apparatus 21 determines that the abnormal external force spectrum characteristic belongs to the abnormal threshold range and determines that the protection device 13 is impacted by the abnormal external force, the abnormality determining apparatus 21 sends the first warning information to the warning platform 11 to give an alarm. The inspection and maintenance of the manhole site corresponding to the identification of the abnormality determination device 21 are facilitated for the staff according to the first warning information received by the warning platform 11. The first warning information characterizes the protective device to be impacted by abnormal external force, such as the characterizing protective cover is hit by a strong force. Accordingly, if the abnormality determining device 21 determines that the protection device 13 is not impacted by an abnormal external force or is impacted by a normal external force, the abnormality determining device 21 will not send warning information to the warning platform 11, thereby avoiding false alarms.
Optionally, the state information further includes a vertical distance and a first included angle; the vertical distance is the vertical distance between the manhole protecting device 13 and the manhole ring 14; the first included angle is the included angle between the manhole protector 13 and the manhole ring 14.
After the anomaly determination device 21 determines the spectral feature of the vibration signal, if the anomaly determination device 21 determines that the spectral feature does not belong to the anomaly threshold range, the state information further includes anomaly unlocking information that characterizes that the protection lock 15 of the manhole is abnormally broken, the vertical distance is smaller than a first distance threshold, and the first included angle is smaller than a first angle threshold, the anomaly determination device 21 determines that the protection lock 15 of the manhole is abnormally broken and the protection device 13 is not abnormally broken. The abnormality determining apparatus 21 sends warning information indicating abnormality of the protection lock 15 to the warning platform 11 to give an alarm. For example, the abnormality determining apparatus 21 transmits second warning information indicating that the shield lock 15 is abnormal and the shield device 13 is normal to the warning platform 11 to give an alarm.
The second warning information includes the identifier of the protection lock 15, so that the staff can check and maintain the manhole field corresponding to the identifier of the protection lock 15 according to the second warning information received by the warning platform 11. The second warning information may indicate that the protective lock 15 is forcefully broken.
Alternatively, after the abnormality determining device 21 determines the spectral characteristics of the vibration signal,
if the anomaly determination device 21 determines that the spectral feature does not belong to the anomaly threshold range, the state information further includes anomaly unlocking information indicating that the protection lock 15 of the manhole is abnormally damaged, and at least one of the following conditions is satisfied, the anomaly determination device 21 determines that the protection device 13 is abnormally opened, and the anomaly determination device 21 sends warning information indicating that the protection device 13 is abnormally opened to the warning platform 11 to give an alarm:
The vertical distance is greater than or equal to a first distance threshold;
the first included angle is greater than or equal to a first angle threshold.
The abnormality determining apparatus 21 sends warning information indicating that the protection device 13 is abnormally opened to the warning platform 11 to give an alarm. For example, the abnormality determining apparatus 21 transmits third warning information indicating that the guard 13 is abnormally opened to the warning platform 11 to give an alarm.
Guard lock 15 includes, but is not limited to, a smart guard lock, an electronic lock. The abnormality determining apparatus 21 may acquire abnormal unlocking information of the protection lock 15 from the protection lock 15 on the manhole. Illustratively, in the case where authority authentication is not performed or the authority authentication is not passed, the lock cylinder of the protection lock 15 is moved out of the preset position, and then the protection lock 15 is determined to be broken (or abnormally unlocked), the protection lock 15 transmits abnormal unlocking information to the abnormality determining apparatus 21. The abnormality determining apparatus 21 may acquire the vertical distance of the manhole protector 13 from the manhole ring 14 acquired by the distance sensor from the distance sensor on the protector 13. The abnormality determining apparatus 21 may acquire the first angle information of the manhole cover 14 from the inclination sensor on the protector 13, the first angle information being acquired by the inclination sensor. The distance sensor may be an off-coil sensor.
The first distance threshold and the first angle threshold are preset thresholds, the first distance threshold is 10 cm for example, and the first angle threshold is 20 degrees for example.
The third warning information includes the identifier of the abnormality determining device 21, so that the worker can check and maintain the manhole site corresponding to the identifier of the abnormality determining device 21 according to the third warning information received by the warning platform 11.
Alternatively, if the abnormality determination device 21 determines that the vertical distance is equal to or greater than the first distance threshold, the state information does not include abnormal unlocking information of the protection lock 15; and/or the number of the groups of groups,
if the abnormality determination device 21 determines that the first included angle is equal to or greater than the first angle threshold, the state information does not include abnormal unlocking information of the protection lock 15;
the abnormality determining apparatus 21 determines that the guard 13 is normally opened, and the abnormality determining apparatus 21 does not send warning information to the warning platform 11 to avoid invalid work of the staff due to false warning.
Optionally, the status information further includes a vertical distance and a second included angle. The second included angle is the included angle between the manhole protecting device 13 and the ground.
After determining the spectral feature of the vibration signal, if the anomaly determination device 21 determines that the spectral feature does not belong to the anomaly threshold range, the second included angle is equal to or greater than the second angle threshold, and the vertical distance is equal to or less than the second distance threshold, the anomaly determination device 21 determines that the manhole is shifted to alarm.
Normally, if the manhole is moved as a whole to be displaced, the protection lock 15 on the manhole is normally in a locked state, and the abnormality determination device 21 does not receive abnormal unlocking information of the protection lock 15, but the second angle of the protection device 13 with respect to the ground is changed during the manhole is moved. Therefore, after determining the spectral feature of the vibration signal, if the abnormality determining apparatus 21 determines that the spectral feature does not belong to the abnormality threshold range, the second included angle is equal to or larger than the second angle threshold, and the vertical distance is equal to or smaller than the second distance threshold, the abnormality determining apparatus 21 determines that the manhole is shifted to alarm. For example, the abnormality determining apparatus 21 transmits fourth warning information indicating that the manhole is shifted to the warning platform 11 to give an alarm. The fourth warning information includes the identifier of the abnormality determining device 21, so that the worker performs inspection and maintenance to the manhole site corresponding to the identifier of the abnormality determining device 21 according to the fourth warning information received by the warning platform 11.
The second distance threshold may be a vertical distance between the protector 13 and the manhole 14 when the protector 13 and the manhole 14 are in a locked state, for example, the second distance threshold may be 0, or a non-zero distance value, such as 5 mm. The second angular threshold may be 10 °. Assuming that the second distance threshold=0, if the protector 13 of the manhole is in a locked state with the manhole ring 14 and the protector 13 is not damaged or the manhole is not moved to be displaced, generally, the vertical distance between the protector 13 of the manhole and the manhole ring 14 is equal to the second distance threshold, and the second angle between the protector 13 of the manhole and the ground is 0 °. If the manhole is moved and displaced as a whole, the vertical distance between the manhole protector 13 and the manhole ring 14 is still equal to the second distance threshold in the moving process, or the vertical distance between the manhole protector 13 and the manhole ring 14 is smaller than the second distance threshold due to opposite extrusion of the protector 13 and the manhole ring 14, and the angle between the manhole protector 13 and the ground is greater than or equal to the second angle threshold (e.g. 10 °).
As can be seen from the above, the types of manhole abnormality may include the protection device 13 being impacted by an abnormal external force, the protection lock 15 being abnormal, the protection device 13 being abnormally opened, and the manhole being displaced.
The anomaly determination device 21 adopts the manhole anomaly determination method provided by the application, and if the manhole is determined not to be anomalous, no warning information is sent to the warning platform 11. The false alarm caused by normal external force impact on the protection device is avoided, and invalid work of staff due to false alarm is avoided.
The anomaly determination device 21 adopts the manhole anomaly determination method provided by the application, and when the manhole anomaly is determined, different types of warning information such as first warning information, second warning information, third warning information and fourth warning information are sent to the warning platform 11. The staff can confirm the unusual type of manhole according to the warning information of different grade type that warning platform 11 received. Furthermore, the staff can adopt a corresponding maintenance mode according to the determined type of the manhole abnormality, prepare a corresponding maintenance tool or resource, and check and maintain the manhole field corresponding to the identifier of the abnormality determining device 21, so as to improve the working efficiency, reduce the maintenance duration, and improve the communication or power use experience of related users such as communication or power.
Further, the status information may further include a duration for which a vertical distance of the manhole protector 13 from the manhole ring 14 exceeds a first distance threshold. The manhole abnormality determination method provided by the application can further accurately determine whether the protection device 13 is abnormally opened or not by combining the duration of the vertical distance exceeding the first distance threshold. If the abnormality determination device 21 acquires the abnormal unlocking information of the protection lock 15, and determines that the vertical distance is equal to or greater than the first distance threshold, the duration for which the state in which the vertical distance is equal to or greater than the first distance threshold is longer than the duration threshold; then, the abnormality determining apparatus 21 determines that the guard 13 is abnormally opened. Illustratively, the first distance threshold is assumed to be 10cm and the duration threshold is assumed to be 5s. If the abnormality determining device 21 obtains abnormal unlocking information of the protection lock 15, and obtains a vertical distance value that the vertical distance between the protection device 13 of the manhole and the manhole ring 14 is greater than or equal to 10cm for the first time, the abnormality determining device 21 starts a timer on the abnormality determining device 21 and starts timing, and after the timing duration of the timer exceeds a duration threshold of 5 seconds, the abnormality determining device 21 obtains a vertical distance value that is greater than or equal to 10cm again; the abnormality determining apparatus 21 determines that the guard 13 is abnormally opened and transmits third warning information to the warning platform 11.
Alternatively, if the abnormality determining apparatus 21 obtains the abnormal unlocking information of the protection lock 15, obtains a vertical distance value that the vertical distance between the protection device 13 and the manhole ring 14 is greater than or equal to the first distance threshold for the first time, the abnormality determining apparatus 21 starts a timer on the abnormality determining apparatus 21 and starts to count time, and the abnormality determining apparatus 21 obtains a vertical distance value that is less than the first distance threshold in a counting period in which the counting time of the timer does not exceed the time threshold; then, the abnormality determining apparatus 21 turns off the timer and stops counting time, and the abnormality determining apparatus 21 determines that the guard 13 is not abnormally turned on, nor sends warning information to the warning platform. If the abnormality determining apparatus 21 turns off the timer and stops counting, and then obtains the vertical distance value that is greater than or equal to the first distance threshold again, the timer is restarted and counting is restarted, and after the counted time length exceeds the time length threshold, the abnormality determining apparatus 21 obtains the vertical distance value that is greater than or equal to the first distance threshold again, and then the abnormality determining apparatus 21 determines that the guard 13 is abnormally opened and sends third warning information to the warning platform 11.
According to the manhole anomaly determination method provided by the embodiment of the application, the frequency spectrum energy characteristic and the frequency spectrum distribution characteristic of the vibration signal are determined, and the first threshold range and the second threshold range of the anomaly threshold range are combined, so that if the frequency spectrum energy characteristic is determined to belong to the first threshold range and the frequency spectrum distribution characteristic is determined to belong to the second threshold range, the protection device can be accurately determined to be impacted by the abnormal external force so as to alarm, and the problem of high false alarm rate of the existing alarm method is solved. After the protection device is determined to be impacted by abnormal external force, the method provided by the application sends the first warning information to the warning platform to give an alarm, so that false warning caused by the fact that the protection device is impacted by normal external force is avoided, and invalid workload of staff is greatly reduced. In addition, according to the abnormal unlocking information, the vertical distance, the first included angle, the second included angle and the duration of the state that the vertical distance is larger than or equal to the first distance threshold value, the types of manhole abnormality such as abnormal protection lock, abnormal opening of the protection device and displacement of the manhole are accurately determined, and according to the determined types of manhole abnormality, different types of warning information are sent to the warning platform, so that a worker can adopt a corresponding maintenance mode and prepare a corresponding maintenance tool or resource according to the determined types of manhole abnormality, efficiently check and maintain the manhole on site, and improve experience of related users of communication or electric power on communication or electric power use.
The embodiment of the application also provides a manhole abnormity determining device. Fig. 4 is a first structural diagram of a manhole abnormality determination apparatus according to an embodiment of the present application. As shown in fig. 4, the apparatus includes:
a transceiver module 41 and a processing module 42;
a transceiver module 41, configured to obtain status information of the protection device 13 of the manhole, where the status information includes a vibration signal of the protection device 13 impacted by an external force;
a processing module 42 for determining a spectral signature of the vibration signal; if the spectrum characteristic is determined to belong to the abnormal threshold range, the protection device 13 is determined to be impacted by abnormal external force so as to give an alarm.
The specific implementation principle and technical effect of the embodiment of the present application are similar to those of the embodiment shown in fig. 3, and the embodiment is not described herein.
The embodiment of the application also provides a manhole abnormity determining device. Fig. 5 is a second structural diagram of a manhole abnormality determination apparatus according to an embodiment of the present application. As shown in fig. 5, the apparatus includes a processor 51 and a memory 52, where the memory 52 stores instructions executable by the processor 51, so that the processor 51 may be used to execute the technical solution of the above method embodiment, and the implementation principle and technical effect are similar, and the embodiment is not repeated herein. It should be understood that the processor 51 may be a central processing unit (in english: central Processing Unit, abbreviated as CPU), or may be other general purpose processors, digital signal processors (in english: digital Signal Processor, abbreviated as DSP), application specific integrated circuits (in english: application Specific Integrated Circuit, abbreviated as ASIC), or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the present application may be embodied directly in a hardware processor for execution, or in a combination of hardware and software modules in a processor for execution. The memory 52 may include a high-speed random access memory (in english: random Access Memory, abbreviated as RAM), and may further include a Non-volatile memory (in english: NVM), such as at least one magnetic disk memory, and may also be a U-disk, a removable hard disk, a read-only memory, a magnetic disk, or an optical disk.
The embodiment of the application also provides a manhole. Fig. 6 is a manhole structure diagram provided in an embodiment of the present application. The manhole provided by the embodiment of the present application will be described with reference to fig. 2 and 6. As shown in fig. 6, the manhole includes:
a guard 61 and a manhole abnormality determination device 65;
a manhole abnormality determining device 65 for acquiring state information of the protector 61 of the manhole, the state information including a vibration signal of the protector 61 impacted by an external force; determining a spectral characteristic of the vibration signal; if the spectrum characteristic is determined to belong to the abnormal threshold range, the protection device 61 is determined to be impacted by abnormal external force so as to alarm.
Optionally, the manhole also includes a vibration sensor 64. The vibration sensor 64 is used to collect a vibration signal of the guard 61 that is impacted by an external force, and transmit the collected vibration signal to the man-hole abnormality determining device 65.
Optionally, the manhole further comprises a manhole ring 62, a guard lock 63, a distance sensor 66, and an inclination sensor 67.
The guard lock 63 is used for sending abnormal unlocking information to the manhole abnormality determination device 65 when the guard lock 63 is abnormally damaged.
A distance sensor 66 for acquiring the vertical distance between the manhole protector 61 and the manhole ring 62 and transmitting the acquired vertical distance information to the manhole abnormality determining device 65.
The inclination sensor 67 is configured to collect a first included angle between the manhole protector 61 and the manhole ring 62.
The manhole anomaly determination device 65 is further configured to determine, after determining the spectral feature of the vibration signal, that if the spectral feature does not belong to the anomaly threshold range, the state information further includes anomaly unlocking information that characterizes that the protection lock 63 of the manhole is abnormally damaged, the vertical distance is smaller than a first distance threshold, and the first included angle is smaller than a first angle threshold; it is determined that the manhole guard lock 63 is abnormally broken and the guard 61 is not abnormal; and sends warning information representing abnormality of the protection lock 63 to the warning platform 11 to give an alarm.
Optionally, the manhole anomaly determination means 65 is further arranged to, after determining the spectral characteristics of the vibration signal,
if the spectrum characteristics are determined not to belong to the abnormal threshold range, the state information also comprises abnormal unlocking information representing abnormal damage to the protection lock 63 of the manhole, and the vertical distance is greater than or equal to a first distance threshold; and/or the number of the groups of groups,
if the spectrum characteristics are determined not to belong to the abnormal threshold range, the state information also comprises abnormal unlocking information, and the first included angle is larger than or equal to a first angle threshold;
it is determined that the guard 61 is abnormally opened;
And sending warning information representing that the protective device 61 is abnormally opened to the warning platform 11 for warning.
Optionally, the inclination sensor 67 is further configured to collect a second included angle between the manhole protector 61 and the ground.
The manhole anomaly determination device 65 is further configured to determine that the manhole is shifted for alarming if the spectral feature is determined not to belong to the anomaly threshold range after determining the spectral feature of the vibration signal, the second included angle is equal to or greater than the second angle threshold, and the vertical distance is equal to or less than the second distance threshold.
Alternatively, the vibration sensor 64 may be provided in the lock body of the barrier lock 63.
The specific implementation principle and technical effect of the manhole provided by the embodiment of the present application are similar to those of the embodiment shown in fig. 3, and the embodiment is not described here again.
The embodiment of the application also provides a storage medium, wherein computer execution instructions are stored in the storage medium, and when the computer execution instructions are executed by a processor, the manhole abnormality determination method is realized. The storage medium may be implemented by any type of volatile or non-volatile Memory device or combination thereof, such as Static Random-Access Memory (SRAM), electrically erasable programmable Read-Only Memory (EEPROM), erasable programmable Read-Only Memory (EPROM), programmable Read-Only Memory (PROM), read-Only Memory (ROM), magnetic Memory, flash Memory, magnetic disk, or optical disk. A storage media may be any available media that can be accessed by a general purpose or special purpose computer.
An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an application specific integrated circuit (English: application Specific Integrated Circuits; ASIC). It is also possible that the processor and the storage medium reside as discrete components in an electronic device or a master device.
The embodiment of the application also provides a program product, such as a computer program, which realizes the manhole abnormality determination method covered by the application when being executed by a processor.
Those of ordinary skill in the art will appreciate that: all or part of the steps for implementing the method embodiments described above may be performed by hardware associated with program instructions. The foregoing program may be stored in a computer readable storage medium. The program, when executed, performs steps including the method embodiments described above; and the aforementioned storage medium includes: various media that can store program code, such as ROM, RAM, magnetic or optical disks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A manhole anomaly determination method, characterized by comprising:
acquiring state information of a protection device of a manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force;
determining a spectral characteristic of the vibration signal;
if the spectrum characteristics are determined to belong to an abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm;
the determining the spectral characteristics of the vibration signal comprises:
determining a spectral energy characteristic and a spectral distribution characteristic of the vibration signal;
if the abnormal external force spectrum characteristic is determined to belong to an abnormal threshold range, determining that the protection device is impacted by the abnormal external force comprises:
if the spectrum energy characteristics are determined to belong to a first threshold range and the spectrum distribution characteristics are determined to belong to a second threshold range, determining that the protection device is impacted by abnormal external force;
the determining of the spectral energy characteristic and the spectral distribution characteristic of the vibration signal comprises:
performing frequency domain conversion processing on the vibration signal to obtain a frequency spectrum sequence X; the spectral sequence X is defined by X (f i ) A set of components;
based on the spectral sequence X, a spectral energy characteristic M of the vibration signal is determined as follows ratio And spectral distribution characteristics IQR spe ：
And x (f) i )∈X；
IQR spe ＝Quartile(X<Sub>win</Sub>,75)-Quartile(X<Sub>win</Sub>,25)；
wherein ,f s is the sampling frequency of the vibration signal; n is the sampling point number of the vibration signal, and N is more than or equal to 1; f (f) min and fmax The boundary frequency of the characteristic spectrum window is preset; e is white noise energy with a spectral value of 1 in a characteristic spectrum window, or E is a constant of 1000; x is X<Sub>win</Sub>For X (f) belonging to a first threshold range in the spectrum sequence X i ) A set of components; quartile (X)<Sub>win</Sub>75) is X<Sub>win</Sub>Is the third quartile of (c); quartile (X)<Sub>win</Sub>25) is X<Sub>win</Sub>Is the first quartile of (c).
2. The method of claim 1, wherein determining that the guard is impacted by an abnormal external force if the spectral energy signature is determined to be within a first threshold range and the spectral distribution signature is determined to be within a second threshold range comprises:
if the spectrum energy characteristic of 0.55> is more than or equal to 0.3 and the spectrum distribution characteristic of 0.65> is more than or equal to 0.45, determining that the protection device is impacted by abnormal external force.
3. The method of claim 1 or 2, wherein the status information further comprises a vertical distance and a first included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the first included angle is the included angle between the protection device of the manhole and the manhole ring;
After said determining the spectral characteristics of the vibration signal, the method further comprises:
if the spectrum characteristic is determined not to belong to the abnormal threshold range, the state information further comprises abnormal unlocking information representing abnormal damage to the protection lock of the manhole, the vertical distance is smaller than a first distance threshold, the first included angle is smaller than a first angle threshold, and the protection lock of the manhole is determined to be abnormally damaged and the protection device is not abnormal;
and sending warning information representing the abnormality of the protection lock to a warning platform so as to give an alarm.
4. The method of claim 1 or 2, wherein the status information further comprises a vertical distance and a first included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the first included angle is the included angle between the protection device of the manhole and the manhole ring;
after said determining the spectral characteristics of the vibration signal, the method further comprises:
if the spectrum characteristics are determined not to belong to the abnormal threshold range, the state information further comprises abnormal unlocking information representing abnormal damage to the protection lock of the manhole, and at least one of the following conditions is met, the protection device is determined to be abnormally opened, and warning information representing abnormal opening of the protection device is sent to a warning platform so as to give an alarm:
The vertical distance is greater than or equal to a first distance threshold;
the first included angle is greater than or equal to a first angle threshold.
5. The method of claim 1 or 2, wherein the status information further comprises a vertical distance and a second included angle; the vertical distance is the vertical distance between the protection device of the manhole and the manhole ring; the second included angle is the included angle between the protection device of the manhole and the ground;
after said determining the spectral characteristics of the vibration signal, the method further comprises:
and if the spectrum characteristics are determined not to belong to the abnormal threshold range, the second included angle is larger than or equal to a second angle threshold, and the vertical distance is smaller than or equal to a second distance threshold, the manhole is determined to be shifted, and accordingly an alarm is given.
6. A manhole anomaly determination device, the device comprising:
a transceiver module and a processing module;
the receiving and transmitting module is used for acquiring state information of a protection device of the manhole, wherein the state information comprises a vibration signal of the protection device impacted by external force;
the processing module is used for determining the frequency spectrum characteristics of the vibration signal; if the spectrum characteristics are determined to belong to an abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm;
The determining the spectral characteristics of the vibration signal comprises:
determining a spectral energy characteristic and a spectral distribution characteristic of the vibration signal;
if the abnormal external force spectrum characteristic is determined to belong to an abnormal threshold range, determining that the protection device is impacted by the abnormal external force comprises:
if the spectrum energy characteristics are determined to belong to a first threshold range and the spectrum distribution characteristics are determined to belong to a second threshold range, determining that the protection device is impacted by abnormal external force;
the determining of the spectral energy characteristic and the spectral distribution characteristic of the vibration signal comprises:
performing frequency domain conversion processing on the vibration signal to obtain a frequency spectrum sequence X; the spectral sequence X is defined by X (f i ) A set of components;
based on the spectral sequence X, a spectral energy characteristic M of the vibration signal is determined as follows ratio And spectral distribution characteristics IQR spe ：
And x (f) i )∈X；
IQR spe ＝Quartile(X<Sub>win</Sub>,75)-Quartile(X<Sub>win</Sub>,25)；
wherein ,f s is the sampling frequency of the vibration signal; n is the sampling point number of the vibration signal, and N is more than or equal to 1; f (f) min and fmax The boundary frequency of the characteristic spectrum window is preset; e is white noise energy with a spectral value of 1 in a characteristic spectrum window, or E is a constant of 1000; x is X<Sub>win</Sub>For X (f) belonging to a first threshold range in the spectrum sequence X i ) A set of components; quartile (X)<Sub>win</Sub>75) is X<Sub>win</Sub>Is the third quartile of (c); quartile (X)<Sub>win</Sub>25) is X<Sub>win</Sub>Is the first quartile of (c).
7. A manhole anomaly determination device, the device comprising:
a processor and a memory;
the memory stores executable instructions executable by the processor;
wherein execution of the executable instructions stored by the memory by the processor causes the processor to perform the method of any one of claims 1-5.
8. A storage medium having stored therein computer-executable instructions which, when executed by a processor, are adapted to carry out the method of any one of claims 1-5.
9. A manhole, characterized in that it comprises:
a protection device and a manhole abnormality determination device;
the manhole abnormality determining device is used for obtaining state information of a protecting device of a manhole, wherein the state information comprises a vibration signal of the protecting device impacted by external force; determining a spectral characteristic of the vibration signal; if the spectrum characteristics are determined to belong to an abnormal threshold range, determining that the protection device is impacted by abnormal external force so as to alarm;
The determining the spectral characteristics of the vibration signal comprises:
determining a spectral energy characteristic and a spectral distribution characteristic of the vibration signal;
if the abnormal external force spectrum characteristic is determined to belong to an abnormal threshold range, determining that the protection device is impacted by the abnormal external force comprises:
if the spectrum energy characteristics are determined to belong to a first threshold range and the spectrum distribution characteristics are determined to belong to a second threshold range, determining that the protection device is impacted by abnormal external force;
the determining of the spectral energy characteristic and the spectral distribution characteristic of the vibration signal comprises:
performing frequency domain conversion processing on the vibration signal to obtain a frequency spectrum sequence X; the spectral sequence X is defined by X (f i ) A set of components;
based on the spectral sequence X, a spectral energy characteristic M of the vibration signal is determined as follows ratio And spectral distribution characteristics IQR spe ：
And x (f) i )∈X；
IQR spe ＝Quartile(X<Sub>win</Sub>,75)-Quartile(X<Sub>win</Sub>,25)；
wherein ,f s is the sampling frequency of the vibration signal;
n is the sampling point number of the vibration signal, and N is more than or equal to 1; f (f) min and fmax The boundary frequency of the characteristic spectrum window is preset; e is white noise energy with a spectral value of 1 in a characteristic spectrum window, or E is a constant of 1000;
X<Sub>win</Sub>for frequencyX (f) belonging to a first threshold range in the spectrum sequence X i ) A set of components; quartile (X)<Sub>win</Sub>75) is X<Sub>win</Sub>Is the third quartile of (c); quartile (X)<Sub>win</Sub>25) is X<Sub>win</Sub>Is the first quartile of (c).
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