CN117347025A - Method, device and system for detecting meter box - Google Patents

Method, device and system for detecting meter box Download PDF

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Publication number
CN117347025A
CN117347025A CN202311307921.8A CN202311307921A CN117347025A CN 117347025 A CN117347025 A CN 117347025A CN 202311307921 A CN202311307921 A CN 202311307921A CN 117347025 A CN117347025 A CN 117347025A
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CN
China
Prior art keywords
vibration signal
determining
meter box
vibration
preset
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311307921.8A
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Chinese (zh)
Inventor
杨晨
朱艺伟
钟昕辉
林梓烁
杨显志
许淳
林加毅
罗嘉林
杨康萍
唐鹏飞
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China Southern Power Grid Digital Grid Technology Guangdong Co ltd
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China Southern Power Grid Digital Grid Technology Guangdong Co ltd
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Application filed by China Southern Power Grid Digital Grid Technology Guangdong Co ltd filed Critical China Southern Power Grid Digital Grid Technology Guangdong Co ltd
Priority to CN202311307921.8A priority Critical patent/CN117347025A/en
Publication of CN117347025A publication Critical patent/CN117347025A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/10—Pre-processing; Data cleansing
    • G06F18/15—Statistical pre-processing, e.g. techniques for normalisation or restoring missing data
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G06F18/20—Analysing
    • G06F18/24—Classification techniques

Abstract

The embodiment of the invention discloses a method, a device and a system for detecting a meter box. The detection method of the meter box comprises the following steps: acquiring a vibration signal of a meter box; determining the frequency spectrum of the vibration signal according to the vibration signal, and determining the spectral entropy according to the frequency spectrum; and determining the state of the table box according to the spectral entropy. The method, the device and the system for detecting the meter box can improve the detection efficiency.

Description

Method, device and system for detecting meter box
Technical Field
The embodiment of the invention relates to a meter box detection technology, in particular to a meter box detection method, device and system.
Background
In the electric power system, the meter box mainly plays the effect of protecting the internal ammeter, and the longer the service time of the meter box is, the more the possibility of ageing damage of the meter box is increased, the ageing damage of the meter box can bring more harm, such as water leakage, even the meter box burns out, the internal ammeter measurement is inaccurate, and the like. Therefore, the meter box is required to be detected, the state of the meter box is known in time, and the meter box and the electric meter inside the meter box are prevented from being influenced due to the ageing and the damage of the meter box.
At present, the existing meter box detection method generally needs manual assistance to periodically inspect the meter box to find the aging damage of the meter box, and the method needs a large amount of manpower and material resources, is long in detection time and affects the detection efficiency.
Disclosure of Invention
The embodiment of the invention provides a method, a device and a system for detecting a meter box, which are used for improving the detection efficiency.
In a first aspect, an embodiment of the present invention provides a method for detecting a table box, including:
acquiring a vibration signal of a meter box;
determining a frequency spectrum of the vibration signal according to the vibration signal, and determining a spectral entropy according to the frequency spectrum;
and determining the state of the table box according to the spectral entropy.
Optionally, the determining the spectrum of the vibration signal according to the vibration signal includes:
normalizing the vibration signal to obtain a processed signal;
the frequency spectrum of the processed signal is calculated based on the fourier transform.
Optionally, the determining the spectral entropy according to the spectrum includes:
according to the frequency spectrum, determining a probability density function and information quantity of each frequency point;
multiplying the probability density function and the information quantity of each frequency point and summing to obtain the spectral entropy of the processed signal.
Optionally, the determining the state of the table box according to the spectral entropy includes:
if the spectral entropy is smaller than or equal to a preset first threshold value, determining that the table box is normal;
if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again;
if the spectral entropy is larger than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again.
Optionally, if the spectral entropy is greater than a preset first threshold and less than a preset second threshold, the vibration signal of the meter box needs to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again, including:
the spectrum entropy is redetermined according to the vibration signal of the table box acquired again;
and if the redetermined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged.
Optionally, if the spectral entropy is greater than a preset second threshold, the vibration signal of the table box needs to be acquired again, and the state of the table box is determined according to the vibration signal of the table box acquired again, including:
the spectrum entropy is redetermined according to the vibration signal of the table box acquired again;
and if the redetermined spectral entropy is larger than a preset second threshold value, determining that the table box is damaged.
In a second aspect, an embodiment of the present invention provides a detection apparatus for a case, including:
the signal acquisition module is used for acquiring a vibration signal of the meter box;
the spectrum entropy determining module is used for determining the frequency spectrum of the vibration signal according to the vibration signal and determining the spectrum entropy according to the frequency spectrum;
and the state determining module is used for determining the state of the table box according to the spectral entropy.
Optionally, the spectral entropy determining module includes:
the signal processing unit is used for carrying out normalization processing on the vibration signals to obtain processed signals;
and the frequency spectrum determining unit is used for calculating the frequency spectrum of the processed signal based on Fourier transformation.
In a third aspect, an embodiment of the present invention provides a detection system for a watch case, including a vibration exciter, a vibration sensing module and a processor, where the vibration exciter and the vibration sensing module are electrically connected to the processor, and the detection device in the second aspect is integrated in the processor.
Optionally, the vibration exciter and the vibration sensing module are attached to the meter box, and the processor is located at the inner side of the meter box.
The embodiment of the invention provides a method, a device and a system for detecting a meter box, wherein the detection method comprises the following steps: acquiring a vibration signal of a meter box; determining the frequency spectrum of the vibration signal according to the vibration signal, and determining the spectral entropy according to the frequency spectrum; and determining the state of the table box according to the spectral entropy. According to the method, the device and the system for detecting the meter box, the frequency spectrum is determined according to the vibration signal, the spectrum entropy is determined according to the frequency spectrum, and therefore the state of the meter box is determined according to the spectrum entropy, and if the spectrum entropy is smaller than or equal to a preset first threshold value, the meter box is determined to be normal; if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged; if the spectral entropy is larger than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset second threshold, the damage of the table box is determined, and manual assistance is not needed, so that the detection efficiency is improved.
Drawings
FIG. 1 is a flowchart of a method for detecting a meter box according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a vibration signal according to a first embodiment of the present invention;
FIG. 3 is a schematic diagram of another vibration signal provided in accordance with a first embodiment of the present invention;
fig. 4 is a flowchart of a method for detecting a meter box according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a vibration signal according to a second embodiment of the present invention;
fig. 6 is a schematic diagram of a spectrum of a vibration signal according to a second embodiment of the present invention;
fig. 7 is a schematic diagram of information content of a vibration signal according to a second embodiment of the present invention;
fig. 8 is a block diagram of a detection device for a meter box according to the third embodiment of the present invention;
fig. 9 is a block diagram of a detection system for a meter box according to a third embodiment of the present invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
Example 1
Fig. 1 is a flowchart of a method for detecting a meter box according to an embodiment of the present invention, where the method may be applied to detecting a meter box, and the method may be performed by a meter box detection device, where the device may be implemented in software and/or hardware, and where the device may be integrated in a processor of a meter box detection system, and the method specifically includes the following steps:
step 110, obtaining a vibration signal of the meter box.
The vibration signal of the meter box can be collected by a vibration sensing module attached to the meter box, for example, a vibration exciter attached to the meter box simulates a force hammer to knock the meter box so that the meter box can vibrate instantaneously like 100ms, at this time, the vibration sensing module collects the vibration signal of the meter box, and a detection device of the meter box is electrically connected with the vibration sensing module so as to obtain the vibration signal of the meter box.
In addition, the detection device of the meter box is electrically connected with the vibration exciter, and the working state of the vibration exciter can be controlled, so that the vibration exciter can be controlled to work when the meter box is required to be detected, the vibration sensing module is enabled to collect the vibration signal of the meter box, and the vibration signal collected by the vibration sensing module is obtained.
Step 120, determining a frequency spectrum of the vibration signal according to the vibration signal, and determining a spectral entropy according to the frequency spectrum.
Specifically, the vibration signal can be normalized to obtain a processed signal, and the frequency spectrum of the processed signal is calculated based on Fourier transform; and determining the probability density function and the information quantity of each frequency point according to the frequency spectrum, multiplying the probability density function and the information quantity of each frequency point, and summing to obtain the spectral entropy of the processed signal.
And 130, determining the state of the table box according to the spectral entropy.
Specifically, if the spectral entropy is smaller than or equal to a preset first threshold, determining that the table box is normal; if the spectral entropy is greater than the preset first threshold and less than or equal to the preset second threshold, the vibration signal of the table box is required to be acquired again, and the step 120 is executed to determine the spectral entropy again according to the vibration signal of the table box acquired again; if the re-determined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged; if the spectral entropy is greater than the preset second threshold, the vibration signal of the table box is required to be acquired again, and step 120 is executed to determine the spectral entropy again according to the vibration signal of the table box acquired again; and if the redetermined spectral entropy is larger than a preset second threshold value, determining that the table box is damaged. Fig. 2 is a schematic diagram of a vibration signal according to the first embodiment of the present invention, and fig. 3 is a schematic diagram of another vibration signal according to the first embodiment of the present invention. Referring to fig. 2 and 3, the acceleration of the vibration signal of the case is related to the damage degree of the case, the vibration signal shown in fig. 2 is the vibration signal when the case is intact, the vibration signal shown in fig. 3 is the vibration signal when the case is aged, and it can be seen from fig. 2 and 3 that the change amplitude of the acceleration of the vibration signal when the case is aged is larger than the change amplitude of the acceleration of the vibration signal when the case is intact.
It should be noted that, in this embodiment, the specific value of each preset threshold may be determined according to the actual detection requirement, which is not limited herein.
The method for detecting the meter box provided by the embodiment comprises the following steps: acquiring a vibration signal of a meter box; determining the frequency spectrum of the vibration signal according to the vibration signal, and determining the spectral entropy according to the frequency spectrum; and determining the state of the table box according to the spectral entropy. According to the detection method of the meter box, the frequency spectrum is determined according to the vibration signal, the spectrum entropy is determined according to the frequency spectrum, and therefore the state of the meter box is determined according to the spectrum entropy, and if the spectrum entropy is smaller than or equal to a preset first threshold value, the meter box is determined to be normal; if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged; if the spectral entropy is larger than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset second threshold, the damage of the table box is determined, and manual assistance is not needed, so that the detection efficiency is improved.
Example two
Fig. 4 is a flowchart of a method for detecting a meter box according to a second embodiment of the present invention, where the method may be applied to detecting a meter box, and the method may be performed by a meter box detection device, where the device may be implemented in software and/or hardware, and where the device may be integrated in a processor of a meter box detection system, and the method specifically includes the following steps:
step 210, obtaining a vibration signal of the meter box.
Wherein the vibration signal of the meter box can be collected by a vibration sensing module attached to the meter box, for example, the vibration exciter attached to the meter box simulates a force hammer to strike the meter box so that the meter box can generate 100ms instant vibration, and the vibration sensing module collects the vibration signal of the meter box as 1s vibration signal x s And (t) the sampling frequency is r1, and the detection device of the meter box is electrically connected with the vibration sensing module so as to acquire a vibration signal of the meter box.
In addition, the detection device of the meter box is electrically connected with the vibration exciter, and the working state of the vibration exciter can be controlled, so that the vibration exciter can be controlled to work when the meter box is required to be detected, the vibration sensing module is enabled to collect the vibration signal of the meter box, and the vibration signal collected by the vibration sensing module is obtained.
And 220, normalizing the vibration signal to obtain a processed signal.
Wherein the vibration signal x s (t) normalization processing to obtain a processed signal x (t), and the specific processing procedure may refer to the prior art related to normalization processing, which is not described herein.
Step 230, calculating the spectrum of the processed signal based on the fourier transform.
Wherein, based on Fourier transform, the frequency component of 0-r1/2 frequency is reserved to obtain a frequency spectrum P w The specific processing procedure of calculating the signal spectrum by fourier transform can refer to the related prior art, and will not be described herein.
Step 240, determining probability density function and information quantity of each frequency point according to the frequency spectrum.
Specifically, according to the frequency spectrum P w Calculating probability density function pdf of each frequency point i i And calculates the information quantity-log of each frequency point 2 (pdf i ). Exemplary, FIG. 5 is a vibration diagram of a second embodiment of the present inventionFig. 6 is a schematic diagram of a spectrum of a vibration signal according to a second embodiment of the present invention, and fig. 7 is a schematic diagram of an information amount of a vibration signal according to a second embodiment of the present invention. Referring to fig. 5, 6 and 7, the frequency spectrum shown in fig. 6 and the information amount shown in fig. 7 can be obtained from the vibration signal shown in fig. 5.
And 250, multiplying the probability density function and the information quantity of each frequency point and summing to obtain the spectral entropy of the processed signal.
Step 260, if the spectral entropy is smaller than or equal to a preset first threshold, determining that the table box is normal.
For example, the first threshold is preset to be 4, and if the spectral entropy is smaller than 4, the table box is determined to be healthy and aging-free.
Step 270, if the spectral entropy is greater than the preset first threshold and less than or equal to the preset second threshold, the vibration signal of the meter box needs to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again.
The second threshold is illustratively preset to 6. Specifically, if the spectral entropy is greater than a preset first threshold value and less than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the vibration signal of the meter box acquired again; and if the redetermined spectral entropy is larger than the preset first threshold value and smaller than or equal to the preset second threshold value, determining that the table box is aged.
And 280, if the spectral entropy is greater than a preset second threshold, acquiring the vibration signal of the meter box again, and determining the state of the meter box according to the vibration signal of the meter box acquired again.
Specifically, if the spectral entropy is greater than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset second threshold value, the case is determined to be damaged, and the case needs to be replaced.
It should be noted that, in this embodiment, the values of the preset thresholds are only schematically illustrated, and the specific values may be determined according to the actual detection requirements, which is not limited herein.
According to the detection method of the meter box, the frequency spectrum is determined according to the vibration signal, the spectrum entropy is determined according to the frequency spectrum, and if the spectrum entropy is smaller than or equal to a preset first threshold value, the meter box is determined to be normal; if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged; if the spectral entropy is larger than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the spectral entropy is determined again according to the acquired vibration signal of the meter box again; if the re-determined spectral entropy is larger than a preset second threshold, the damage of the table box is determined, and manual assistance is not needed, so that the detection efficiency is improved.
Example III
Fig. 8 is a block diagram of a detection device for a meter box according to a third embodiment of the present invention. Referring to fig. 8, the meter box detection device includes: a signal acquisition module 310, a spectral entropy determination module 320, and a state determination module 330. The signal acquisition module 310 is used for acquiring a vibration signal of the meter box; the spectral entropy determining module 320 is configured to determine a spectrum of the vibration signal according to the vibration signal, and determine a spectral entropy according to the spectrum; the state determining module 330 is configured to determine a state of the table bin according to the spectral entropy.
Based on the above embodiment, the spectral entropy determining module 320 includes: a signal processing unit and a spectrum determining unit; the signal processing unit is used for carrying out normalization processing on the vibration signals to obtain processed signals; the spectrum determination unit is used for calculating the spectrum of the processed signal based on Fourier transformation.
Optionally, the spectral entropy determining module 320 includes: an information determination unit and a spectrum entropy determination unit; the information determining unit is used for determining probability density functions and information quantity of each frequency point according to the frequency spectrum; the spectral entropy determining unit is used for multiplying and summing the probability density function and the information quantity of each frequency point to obtain the spectral entropy of the processed signal.
Optionally, the state determining module 330 includes: a first state determination unit, a second state determination unit, and a third state determination unit; the first state determining unit is used for determining that the table box is normal if the spectral entropy is smaller than or equal to a preset first threshold value; the second state determining unit is used for acquiring the vibration signal of the meter box again if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, and determining the state of the meter box according to the vibration signal of the meter box acquired again; the third state determining unit is used for acquiring the vibration signal of the meter box again if the spectral entropy is larger than a preset second threshold value, and determining the state of the meter box according to the vibration signal of the meter box acquired again.
Optionally, the second state determining unit includes: a first spectral entropy determination subunit and an aging determination subunit; the first spectrum entropy determining subunit is used for redetermining spectrum entropy according to the acquired vibration signals of the table box; the aging determination subunit is configured to determine that the table box is aged if the redetermined spectral entropy is greater than a preset first threshold and less than or equal to a preset second threshold.
Optionally, the third state determining unit includes: a second spectral entropy determination subunit and a corruption determination subunit; the second spectrum entropy determining subunit is used for determining spectrum entropy again according to the acquired vibration signals of the table box again; the damage determination subunit is configured to determine that the table box is damaged if the redetermined spectral entropy is greater than a preset second threshold.
Fig. 9 is a block diagram of a detection system for a meter box according to a third embodiment of the present invention. Referring to fig. 9, the detection system of the watch case includes a vibration exciter 10, a vibration sensing module 20 and a processor 30, wherein the vibration exciter 10 and the vibration sensing module 20 are electrically connected to the processor 30, and the detection device according to any embodiment of the present invention is integrated in the processor. The processor 30 is configured to control the working state of the vibration exciter 10, and obtain the vibration signal of the meter box collected by the vibration sensing module 20, so as to determine whether the meter box is aged or damaged according to the vibration signal, and the specific process may refer to the first embodiment and the second embodiment and will not be described herein.
Alternatively, vibration exciter 10 and vibration sensing module 20 are attached to case 40, and processor 30 is located inside case 40. This arrangement ensures that the vibration sensor module 20 collects vibration signals from the meter box during operation of the vibration exciter 10.
The detection device and system for the meter box provided by the embodiment belong to the same inventive concept as the detection method for the meter box provided by any embodiment of the present invention, and have corresponding beneficial effects, and technical details not elaborated in the embodiment are not detailed in the detection method for the meter box provided by any embodiment of the present invention.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, and that various obvious changes, rearrangements, combinations, and substitutions can be made by those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.

Claims (10)

1. A method of detecting a timepiece, comprising:
acquiring a vibration signal of a meter box;
determining a frequency spectrum of the vibration signal according to the vibration signal, and determining a spectral entropy according to the frequency spectrum;
and determining the state of the table box according to the spectral entropy.
2. The method of claim 1, wherein determining the spectrum of the vibration signal from the vibration signal comprises:
normalizing the vibration signal to obtain a processed signal;
the frequency spectrum of the processed signal is calculated based on the fourier transform.
3. The method of detecting according to claim 2, wherein said determining spectral entropy from said spectrum comprises:
according to the frequency spectrum, determining a probability density function and information quantity of each frequency point;
multiplying the probability density function and the information quantity of each frequency point and summing to obtain the spectral entropy of the processed signal.
4. The method according to claim 1, wherein determining the state of the table bin from the spectral entropy comprises:
if the spectral entropy is smaller than or equal to a preset first threshold value, determining that the table box is normal;
if the spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, the vibration signal of the meter box is required to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again;
if the spectral entropy is larger than a preset second threshold, the vibration signal of the meter box is required to be acquired again, and the state of the meter box is determined according to the vibration signal of the meter box acquired again.
5. The method according to claim 4, wherein if the spectral entropy is greater than a preset first threshold and less than a preset second threshold, acquiring the vibration signal of the case again, and determining the state of the case according to the vibration signal of the case again, includes:
the spectrum entropy is redetermined according to the vibration signal of the table box acquired again;
and if the redetermined spectral entropy is larger than a preset first threshold value and smaller than or equal to a preset second threshold value, determining that the table box is aged.
6. The method according to claim 4, wherein if the spectral entropy is greater than a preset second threshold, acquiring the vibration signal of the case again, and determining the state of the case according to the vibration signal of the case again includes:
the spectrum entropy is redetermined according to the vibration signal of the table box acquired again;
and if the redetermined spectral entropy is larger than a preset second threshold value, determining that the table box is damaged.
7. A meter box detection device, comprising:
the signal acquisition module is used for acquiring a vibration signal of the meter box;
the spectrum entropy determining module is used for determining the frequency spectrum of the vibration signal according to the vibration signal and determining the spectrum entropy according to the frequency spectrum;
and the state determining module is used for determining the state of the table box according to the spectral entropy.
8. The detection apparatus according to claim 7, wherein the spectral entropy determination module comprises:
the signal processing unit is used for carrying out normalization processing on the vibration signals to obtain processed signals;
and the frequency spectrum determining unit is used for calculating the frequency spectrum of the processed signal based on Fourier transformation.
9. A meter box detection system comprising a vibration exciter, a vibration sensing module and a processor, wherein the vibration exciter and the vibration sensing module are both electrically connected to the processor, and the detection device according to any one of claims 7-8 is integrated in the processor.
10. The detection system of claim 9, wherein the vibration exciter and the vibration sensing module are attached to the watch case, and the processor is located inside the watch case.
CN202311307921.8A 2023-10-10 2023-10-10 Method, device and system for detecting meter box Pending CN117347025A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311307921.8A CN117347025A (en) 2023-10-10 2023-10-10 Method, device and system for detecting meter box

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311307921.8A CN117347025A (en) 2023-10-10 2023-10-10 Method, device and system for detecting meter box

Publications (1)

Publication Number Publication Date
CN117347025A true CN117347025A (en) 2024-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311307921.8A Pending CN117347025A (en) 2023-10-10 2023-10-10 Method, device and system for detecting meter box

Country Status (1)

Country Link
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