CN110148118A - A kind of grounding knife of switch cabinet state non-contact monitoring method, system, medium and equipment - Google Patents

A kind of grounding knife of switch cabinet state non-contact monitoring method, system, medium and equipment Download PDF

Info

Publication number
CN110148118A
CN110148118A CN201910324214.7A CN201910324214A CN110148118A CN 110148118 A CN110148118 A CN 110148118A CN 201910324214 A CN201910324214 A CN 201910324214A CN 110148118 A CN110148118 A CN 110148118A
Authority
CN
China
Prior art keywords
switch
mark point
earthing knife
knife
calibration value
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.)
Granted
Application number
CN201910324214.7A
Other languages
Chinese (zh)
Other versions
CN110148118B (en
Inventor
肖致远
袁培
毛文奇
刘张磊
李喜桂
黎刚
周挺
韩忠晖
陈功
刘赟
陈佳
张芳
邬旭东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Changsha Power Supply Co of State Grid Hunan Electric Power Co Ltd
Original Assignee
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd
State Grid Hunan Electric Power Co Ltd
Changsha Power Supply Co of State Grid Hunan Electric Power Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hunan Electric Power Co Ltd, State Grid Hunan Electric Power Co Ltd, Changsha Power Supply Co of State Grid Hunan Electric Power Co Ltd filed Critical State Grid Corp of China SGCC
Priority to CN201910324214.7A priority Critical patent/CN110148118B/en
Publication of CN110148118A publication Critical patent/CN110148118A/en
Application granted granted Critical
Publication of CN110148118B publication Critical patent/CN110148118B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/70—Determining position or orientation of objects or cameras
    • G06T7/73—Determining position or orientation of objects or cameras using feature-based methods
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10004—Still image; Photographic image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • G06T2207/30164—Workpiece; Machine component
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30232—Surveillance

Abstract

The invention discloses a kind of grounding knife of switch cabinet state non-contact monitoring method, system, medium and equipment, the method for the present invention includes that acquisition earthing knife-switch image recognition goes out to mark dot center's coordinate；It is compared according to the geometrical characteristic of mark point centre coordinate with preset gate-dividing state calibration value and "on" position calibration value, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, determines that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, determine that earthing knife-switch is in "on" position.The present invention can be monitored the earthing knife-switch in switchgear by non-contacting mode, the state of earthing knife-switch can be got in real time, and it can be realized the accurate judgement of earthing knife-switch opening and closing state in switchgear, the double confirmations of grounding knife of switch cabinet state can be easily formed with the existing mode for contacting monitoring to monitor, have the advantages that implementation structure is simply and at low cost.

Description

A kind of grounding knife of switch cabinet state non-contact monitoring method, system, medium and equipment
Technical field
The present invention relates to power measurement technical fields, and in particular to a kind of grounding knife of switch cabinet state non-contact monitoring method, System, medium and equipment.
Background technique
Switchgear is a kind of electrical equipment, the main function of switchgear be generated electricity in electric system, transmitted electricity, distribution and During electric energy is converted, electrical equipment is opened and closed, controlled and protected.Grounding knife of switch cabinet is work particularly important in switchgear Dynamic switchgear.In the course of work of switchgear, as needed to carry out switch opening and closing movement, need earthing knife-switch turning to corresponding positions Set, as earthing knife-switch can not actuation in place, then can seriously affect combined floodgate/separating brake effect, lead to equipment damage even safety accident. Therefore, during earthing knife-switch actuation, it has to be possible to carry out implementation monitoring to its opening and closing state.
In the design of current switchgear, usually using artificial observation, contact pressure sensor, contact strain sensing Device (foil gauge) detects the opening and closing state of earthing knife-switch.Not only error is big but also time-consuming and laborious for artificial observation mode, it is difficult to Meets the needs of one key sequence of smart grid.Touch sensor needs to be arranged on earthing knife-switch contact, not only interferes the work of contact Make and be easy to be influenced by switching interior big operating current, leads to sensor failure or damage.In addition, according to the national following intelligence The guiding theory of " a key sequence ", earthing knife-switch opening and closing state must realize " double confirmations ", that is, require simultaneously in the planning of energy power grid There are two types of independent technological means realize earthing knife-switch opening and closing state while determine, just can confirm that the validity of data.In addition, Urgent need, which researches and develops new monitoring means on the basis of the mode of existing contact monitoring, can complete the demands that double confirmations monitor.
Therefore, on the basis of the technological means of existing contact monitoring, reliable and stable grounding knife of switch cabinet shape how is realized State non-contact monitoring has become a key technical problem urgently to be resolved.
Summary of the invention
The technical problem to be solved in the present invention: in view of the above problems in the prior art, a kind of grounding knife of switch cabinet state is provided Non-contact monitoring method, system, medium and equipment, the present invention can carry out the earthing knife-switch in switchgear by non-contacting mode Real-time monitoring can get in real time the state of earthing knife-switch, and can be realized the accurate of earthing knife-switch opening and closing state in switchgear Determine, can easily form the double confirmations of grounding knife of switch cabinet state with the existing mode for contacting monitoring and monitor.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows:
A kind of grounding knife of switch cabinet state non-contact monitoring method, implementation steps include:
1) earthing knife-switch image is acquired；
2) the mark point centre coordinate in earthing knife-switch image in earthing knife-switch is identified；
3) it is carried out according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state calibration value and "on" position calibration value Compare, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, determines that earthing knife-switch is in gate-dividing state； If the error with preset "on" position calibration value is less than or equal to preset threshold, determine that earthing knife-switch is in "on" position.
It optionally, further include by opening light source when step 1) acquisition earthing knife-switch image to earthing knife-switch light filling, in completion earthing knife-switch figure As the step of closing light source after acquisition.
Optionally, step 2 includes: to be calculated in earthing knife-switch image on earthing knife-switch moving contact using grey scale centre of gravity calculation method The grey scale centre of gravity of single marking point is as the mark point centre coordinate in earthing knife-switch image.
Optionally, step 2 includes: to calculate separately out earthing knife-switch moving contact in earthing knife-switch image using grey scale centre of gravity calculation method On two mark points grey scale centre of gravity, then using the line midpoint of the grey scale centre of gravity of two mark points as label dot center sit Mark.
Optionally, in step 3) further include the geometrical characteristic of mark point centre coordinate while being demarcated with preset gate-dividing state The error of value determines earthing knife-switch in the case where being greater than preset threshold greater than preset threshold and the error of preset "on" position calibration value The step of in divide-shut brake intermediate state.
Optionally, the geometrical characteristic of dot center's coordinate is marked to specifically refer to the actual bit of mark point centre coordinate in step 3) Set coordinate；Step 3) includes:
Mark point centre coordinate 3.1A) is converted to the actual position coordinate of mark point；
3.2A) actual position coordinate of mark point and preset gate-dividing state calibration value and "on" position calibration value are compared Compared with determining that earthing knife-switch is in gate-dividing state if being less than or equal to preset threshold with the error of preset gate-dividing state calibration value；Such as The error of fruit and preset "on" position calibration value is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position.
Optionally, step 3.1A) further include the steps that demarcating object plane resolution parameter Z, calibration object plane resolution ratio ginseng before The step of number Z, comprises determining that mark point, by size as unit of pixel, calculates the mark point in earthing knife-switch image in earthing knife-switch image In size as unit of pixel, the ratio value between actual size, and using the ratio value being calculated as object plane resolution ratio Parameter Z.
Optionally, the demarcating steps of the object plane resolution parameter Z comprise determining that mark point in earthing knife-switch image with pixel For the size of unit, the ratio value between size of mark point as unit of in earthing knife-switch image by pixel, actual size is calculated, And using the ratio value being calculated as object plane resolution parameter Z.
Optionally, the mark point is circle, and the size as unit of pixel refers to shared by digit synbol spot diameter Number of pixels, the actual size of the mark point refer to label spot diameter actual physical size.
Optionally, step 3.2A) further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value, mark before The step of determining gate-dividing state calibration value and "on" position calibration value includes: the earthing knife-switch image acquired under gate-dividing state, identifies separating brake The mark point centre coordinate gone out in earthing knife-switch image under state, is converted to mark point for the mark point centre coordinate under gate-dividing state The first actual position coordinate, and using first actual position coordinate as preset gate-dividing state calibration value；Acquire combined floodgate shape Earthing knife-switch image under state identifies the mark point centre coordinate gone out in earthing knife-switch image under "on" position, by the mark under "on" position Note dot center's coordinate is converted to the second actual position coordinate of mark point, and using second actual position coordinate as preset conjunction Lock state calibration value.
Optionally, step 3.2A) it include: by the actual position coordinate of mark point and preset gate-dividing state calibration value and conjunction Lock state calibration value is compared, and determines to be less than or equal to the error of preset gate-dividing state calibration value if meeting formula (1) Preset threshold, earthing knife-switch are in gate-dividing state；Determine to be less than with the error of preset "on" position calibration value if meeting formula (2) Equal to preset threshold, earthing knife-switch is in "on" position；
x∈(x1-a,x1+ a) and y ∈ (y1-a,y1+ a) (1)
x∈(x2-b,x2+ b) and y ∈ (y2-b,y2+ b) (2)
In formula (1) and formula (2), (x, y) is the actual position coordinate of mark point, (x1,y1) it is gate-dividing state calibration value, (x2,y2) For "on" position calibration value, a is the preset threshold that gate-dividing state determines, b is the preset threshold that "on" position determines.
Optionally, marked in step 3) the geometrical characteristic of dot center's coordinate specifically refer to be respectively positioned on the moving contact of earthing knife-switch and Angle of the mark point centre coordinate line for two mark points arranged along moving contact length direction relative to earthing knife-switch institute's horizontalization face, Step 3) includes:
3.1B) basis is respectively positioned on along the mark point of two mark points on the moving contact of earthing knife-switch and along moving contact length direction arrangement Heart coordinate obtains mark point centre coordinate line, and obtains angle of the mark point centre coordinate line relative to earthing knife-switch institute's horizontalization face Degree；
3.2 B) by mark point centre coordinate line for earthing knife-switch institute's horizontalization face angle and preset gate-dividing state calibration value and "on" position calibration value is compared, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, is sentenced Determine earthing knife-switch and is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, determine ground Knife is in "on" position.
Optionally, rapid 3.2B step by step) before further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value, The step of calibration gate-dividing state calibration value and "on" position calibration value includes: that earthing knife-switch is placed in gate-dividing state, obtains earthing knife-switch and is dividing Two mark point centre coordinates in earthing knife-switch image under lock state obtain mark point according to the mark point centre coordinate of two mark points Centre coordinate line, and mark point centre coordinate line is obtained for the first angle in earthing knife-switch institute's horizontalization face, by the first angle As preset gate-dividing state calibration value；Earthing knife-switch is placed in "on" position, acquisition earthing knife-switch is under "on" position two in earthing knife-switch image A mark point centre coordinate obtains mark point centre coordinate line according to the mark point centre coordinate of two mark points, and obtains Mark point centre coordinate line for earthing knife-switch institute's horizontalization face second angle, using the second angle as preset "on" position mark Definite value.
The geometrical characteristic of dot center's coordinate is optionally marked to specifically refer to the actual range of two mark points in step 3), and One mark point is located on the moving contact of earthing knife-switch, another mark point is located on the static contact of earthing knife-switch, and step 3) includes:
The mark point centre coordinate of two mark points 3.1C) is obtained, a mark point is located on the moving contact of earthing knife-switch, another is marked Note point is located on the static contact of earthing knife-switch；The mark point centre coordinate of two mark points is turned according to object plane resolution parameter Z respectively Be changed to actual position coordinate, the actual position coordinate for marking dot center according to two be calculated two mark points it is practical away from From；
3.2C) actual range of two mark points and preset gate-dividing state calibration value and "on" position calibration value are compared Compared with determining that earthing knife-switch is in gate-dividing state if being less than or equal to preset threshold with the error of preset gate-dividing state calibration value；Such as The error of fruit and preset "on" position calibration value is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position.
Optionally, step 3.1C) in by the mark point centre coordinate of two mark points respectively according to object plane resolution parameter Z Actual position coordinate is converted to specifically refer to the mark point centre coordinate (x ', y ') of mark point being based on preset object plane resolution ratio Parameter Z is converted to the actual position coordinate (x '/Z, y '/Z) of mark point.
Optionally, step 3.1C) further include the steps that demarcating object plane resolution parameter Z, calibration object plane resolution ratio ginseng before The step of number Z, comprises determining that mark point, by size as unit of pixel, calculates the mark point in earthing knife-switch image in earthing knife-switch image In size as unit of pixel, the ratio value between actual size, and using the ratio value being calculated as object plane resolution ratio Parameter Z.
Optionally, the mark point is circle, and the size as unit of pixel refers to shared by digit synbol spot diameter Number of pixels, the actual size of the mark point refer to label spot diameter actual physical size.
Optionally, step 3.2C) further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value, mark before The step of determining gate-dividing state calibration value and "on" position calibration value includes: that earthing knife-switch is placed in gate-dividing state, obtains earthing knife-switch in separating brake Two mark point centre coordinates described in earthing knife-switch image under state, obtain the mark point centre coordinate of two mark points, by two The mark point centre coordinate of mark point is converted to actual position coordinate according to object plane resolution parameter Z respectively, is marked according to two First actual range of two mark points is calculated in the actual position coordinate of dot center, using first actual range as default Gate-dividing state calibration value；Earthing knife-switch is placed in "on" position, obtains earthing knife-switch two marks described in earthing knife-switch image under gate-dividing state Remember dot center's coordinate, obtain the mark point centre coordinate of two mark points, the mark point centre coordinate of two mark points is distinguished Actual position coordinate is converted to according to object plane resolution parameter Z, marks the actual position coordinate of dot center to calculate according to two To the second actual range of two mark points, using second actual range as preset gate-dividing state calibration value.
The present invention also provides a kind of grounding knife of switch cabinet state non-contact monitoring systems, comprising:
Image acquisition procedure unit, for acquiring earthing knife-switch image；
Centre coordinate recognizer unit, for identification the mark point centre coordinate in earthing knife-switch image in earthing knife-switch out；
Opening and closing state determining program unit, for according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state mark Definite value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to default threshold Value, then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, Determine that earthing knife-switch is in "on" position.
The present invention also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, including computer equipment, the computers Equipment is programmed to perform the step of aforementioned switches cabinet earthing knife-switch state non-contact monitoring method of the present invention or the computer equipment Storage medium on be stored with the computer for being programmed to perform aforementioned switches cabinet earthing knife-switch state non-contact monitoring method of the present invention Program.
The present invention also provides a kind of computer readable storage medium, it is stored with and is programmed on the computer readable storage medium To execute the computer program of aforementioned switches cabinet earthing knife-switch state non-contact monitoring method of the present invention.
The present invention also provides a kind of grounding knife of switch cabinet state non-contact monitoring equipment, including label dot element and phase intercommunication Believe the computer equipment and image capture device of connection, the label dot element includes the label that at least one is set in earthing knife-switch Point, described image acquisition equipment is mounted in switchgear and the earthing knife-switch of its camera lens switch-oriented cabinet, the computer equipment are compiled The storage of the step of journey is to execute aforementioned switches cabinet earthing knife-switch state non-contact monitoring method of the present invention or the computer equipment The computer program for being programmed to perform aforementioned switches cabinet earthing knife-switch state non-contact monitoring method of the present invention is stored on medium.
Compared to the prior art, the present invention has an advantage that
1, after the present invention identifies the mark point centre coordinate in earthing knife-switch image in earthing knife-switch, according to the geometry of mark point centre coordinate Feature is compared with preset gate-dividing state calibration value and "on" position calibration value, if with preset gate-dividing state calibration value Error be less than or equal to preset threshold, then determine that earthing knife-switch is in gate-dividing state；If the mistake with preset "on" position calibration value Difference is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position, the present invention is by non-contacting mode in switchgear Earthing knife-switch carries out real-time monitoring, does not need to install the equipment such as any touch sensor in earthing knife-switch, therefore will not be to switchgear certainly Body device has any impact, and through the invention monitoring method can be realized in switchgear earthing knife-switch divide-shut brake accurately sentence It is fixed.In addition, combining upper monitoring method of the present invention on the basis of existing earthing knife-switch opening and closing state method, earthing knife-switch division is enabled to Lock state realizes that more safe and reliable " double confirmations " detects judgement.
2, the method for the present invention can be realized by the central processing unit with processing and control function based on software program, Therefore grounding knife of switch cabinet state non-contact monitoring mode of the present invention has the advantages that structure is simply and at low cost.
Detailed description of the invention
Fig. 1 is the basic procedure schematic diagram of one method of the embodiment of the present invention.
Fig. 2 is the system structure diagram of the embodiment of the present invention one.
Specific embodiment
Present invention will now be described in further detail with reference to the embodiments and the accompanying drawings, but embodiments of the present invention are unlimited In this.
Embodiment one:
As shown in Figure 1, the present embodiment grounding knife of switch cabinet state non-contact monitoring method implementation steps include:
1) earthing knife-switch image is acquired；
2) the mark point centre coordinate in earthing knife-switch image in earthing knife-switch is identified；
3) it is carried out according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state calibration value and "on" position calibration value Compare, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, determines that earthing knife-switch is in gate-dividing state； If the error with preset "on" position calibration value is less than or equal to preset threshold, determine that earthing knife-switch is in "on" position.
In the present embodiment, step 1) further includes by opening light source when acquiring earthing knife-switch image to earthing knife-switch light filling, on completion ground The step of light source is closed after knife Image Acquisition, when carrying out Image Acquisition, the light source in control switch cabinet is opened, otherwise, control Light source in switchgear is closed.By the above-mentioned means, can be on the one hand Image Acquisition light filling, image clearly, another party be improved Face also improves the service life of switchgear inner light source, reduces switchgear electricity consumption and heat dissipation capacity.
In the present embodiment, it can control image capture module according to certain frequency collection earthing knife-switch image, so as to realize The time interval of flexible control earthing knife-switch status monitoring.
As an alternative embodiment, can also determine mark point centre coordinate, which using a mark point Under step 2) include: the single marking point calculated using grey scale centre of gravity calculation method in earthing knife-switch image on earthing knife-switch moving contact Grey scale centre of gravity is as the mark point centre coordinate in earthing knife-switch image.
As an alternative embodiment, can also determine mark point centre coordinate, which using two mark points Under step 2) include: that two in earthing knife-switch image on earthing knife-switch moving contact labels are calculated separately out using grey scale centre of gravity calculation method The grey scale centre of gravity of point, then using the line midpoint of the grey scale centre of gravity of two mark points as mark point centre coordinate.
Mark point in earthing knife-switch, which can according to need, arranges one or more, can choose when arranging multiple wherein single A mark point calculates the grey scale centre of gravity of the mark point as in the mark point in earthing knife-switch image using grey scale centre of gravity calculation method Heart coordinate.Before Image Acquisition, need to arrange that a mark point, mark point can be set to circle in earthing knife-switch, color can To have the color of stronger contrast with background using red, blue, yellow etc..The arrangement of mark point can be in basis It needs to be arranged in the moving contact of earthing knife-switch or is simutaneously arranged on the moving contact and static contact of earthing knife-switch.
Further include in the present embodiment, in step 3) mark point centre coordinate geometrical characteristic simultaneously with preset gate-dividing state The error of calibration value is greater than preset threshold, with the error of preset "on" position calibration value greater than determining in the case where preset threshold Earthing knife-switch is in the step of divide-shut brake intermediate state.
The geometrical characteristic of dot center's coordinate is marked to specifically refer to the reality of mark point centre coordinate in the present embodiment, in step 3) Border position coordinates；Step 3) includes:
Mark point centre coordinate 3.1A) is converted to the actual position coordinate of mark point；
3.2A) actual position coordinate of mark point and preset gate-dividing state calibration value and "on" position calibration value are compared Compared with determining that earthing knife-switch is in gate-dividing state if being less than or equal to preset threshold with the error of preset gate-dividing state calibration value；Such as The error of fruit and preset "on" position calibration value is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position.
In the present embodiment, step 3.1A) further include the steps that demarcating object plane resolution parameter Z before, calibration object plane is differentiated The step of rate parameter Z, comprises determining that mark point, by size as unit of pixel, calculates the mark point in earthing knife-switch in earthing knife-switch image The ratio value between size, actual size in image as unit of pixel, and using the ratio value being calculated as object plane point Resolution parameter Z.
Wherein, the demarcating steps of object plane resolution parameter Z comprise determining that mark point in earthing knife-switch image as unit of pixel Size, calculate the ratio value between size of mark point as unit of in earthing knife-switch image by pixel, actual size, and will meter Obtained ratio value is as object plane resolution parameter Z.In the present embodiment, mark point is circle, the size as unit of pixel Refer to that number of pixels shared by digit synbol spot diameter, the actual size of mark point refer to the actual physics ruler of label spot diameter It is very little., by mark point in earthing knife-switch image using pixel as unit of size and the ratio between the actual size of mark point differentiated as object plane Object actual size representated by a pixel in earthing knife-switch image can be obtained in rate parameter.Such as when the diameter of mark point is on ground Occupy 2 pixels in knife image, and when the actual diameter of mark point is 20mm, then getting object plane resolution parameter is 1: 10, a pixel is the size for representing 10mm in earthing knife-switch image at this time.
In the present embodiment, step 3.2A) it before further include the step for demarcating gate-dividing state calibration value and "on" position calibration value Suddenly, it demarcates gate-dividing state calibration value and the step of "on" position calibration value includes:
The earthing knife-switch image under gate-dividing state is acquired, identifies the mark point centre coordinate gone out in earthing knife-switch image under gate-dividing state, it will Mark point centre coordinate under gate-dividing state is converted to the first actual position coordinate of mark point, and first physical location is sat It is denoted as preset gate-dividing state calibration value；Label is in the present embodimentx 1,y 1), unit is millimeter.
The earthing knife-switch image under "on" position is acquired, identifies that the label dot center gone out in earthing knife-switch image under "on" position sits Mark point centre coordinate under "on" position, is converted to the second actual position coordinate of mark point by mark, and this is second practical Position coordinates are as preset "on" position calibration value；Label is in the present embodimentx 2,y 2), unit is millimeter.
In the present embodiment, step 3.2A) it include: by the actual position coordinate of mark point and preset gate-dividing state calibration value And "on" position calibration value is compared, and determines to be less than with the error of preset gate-dividing state calibration value if meeting formula (1) Equal to preset threshold, earthing knife-switch is in gate-dividing state；The error with preset "on" position calibration value is determined if meeting formula (2) Less than or equal to preset threshold, earthing knife-switch is in "on" position；
x∈(x1-a,x1+ a) and y ∈ (y1-a,y1+ a) (1)
x∈(x2-b,x2+ b) and y ∈ (y2-b,y2+ b) (2)
In formula (1) and formula (2), (x, y) is the actual position coordinate of mark point, (x1,y1) it is gate-dividing state calibration value, (x2,y2) For "on" position calibration value, a is the preset threshold that gate-dividing state determines, b is the preset threshold that "on" position determines.Preset threshold A and b value both may be the same or different.In the present embodiment, the equal value of preset threshold a and b be (- 1,1), unit mm, I.e. when the actual position coordinate of label dot centerxWithyMeet respectivelyx∈ (x 1- 1,x 1+ 1) andy∈ (y 1- 1,y 1+ 1) when, then sentence Disconnected earthing knife-switch is in gate-dividing state, when the actual position coordinate x and y of label dot center meet respectivelyx∈ (x 2- 1,x 2+ 1) andy∈ (y 2- 1,y 2+ 1) when, then judge that earthing knife-switch is in gate-dividing state.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, comprising:
Image acquisition procedure unit, for acquiring earthing knife-switch image；
Centre coordinate recognizer unit, for identification the mark point centre coordinate in earthing knife-switch image in earthing knife-switch out；
Opening and closing state determining program unit, for according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state mark Definite value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to default threshold Value, then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, Determine that earthing knife-switch is in "on" position.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, including computer equipment, it should Computer equipment is programmed to perform the step of the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or the meter It calculates to be stored on the storage medium of machine equipment and is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring side The computer program of method.
In addition, the present embodiment also provides a kind of computer readable storage medium, stored on the computer readable storage medium There is the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring equipment, including label dot element with And it is in communication with each other the computer equipment and image capture device of connection, label dot element includes the mark that at least one is set in earthing knife-switch Remember point, image capture device is mounted in switchgear and the earthing knife-switch of its camera lens switch-oriented cabinet, computer equipment are programmed to hold It is deposited on the storage medium of the step of row the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or computer equipment Contain the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
As shown in Fig. 2, image capture module is camera 4 in the present embodiment；Camera 4 be arranged in switchgear and camera lens 3 just Against earthing knife-switch direction, the number of mark point 2 is two, and the moving contact 12 and stationary contact 11 of earthing knife-switch 1 is arranged in the mark point 2 On.But it is only necessary to use the mark point 2 on moving contact 12 in the present embodiment.Computer equipment 5 is then connected with camera 4, meter The step of machine equipment 5 is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method is calculated, or is calculated It is stored on the storage medium of machine equipment 5 and is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method Computer program.In the present embodiment, aforementioned computer equipment 5 can lead to the switch status information of the earthing knife-switch determined The mode for crossing dry contact accesses to switchgear own system, is transmitted to scheduling by switchgear own system and carries out double confirmation behaviour Make.Wherein in Image Acquisition, the ground that image capture module is disposed with mark point according to certain frequency acquisition acquisition can control The image of knife；It is directed to the collected earthing knife-switch image for being disposed with mark point, switchgear monitoring is transmitted to by Industrial Ethernet In system.
In conclusion the mark point number in the present embodiment method in earthing knife-switch can be set to one, this mark point is set It sets on the moving contact of earthing knife-switch, such situation, which needs to demarcate, obtains object plane resolution parameter；When earthing knife-switch opening and closing state to be determined When, label is got according to centre coordinate and object plane resolution parameter of the mark point in earthing knife-switch in current earthing knife-switch image The actual position coordinate of dot center can judge earthing knife-switch division after being compared the position coordinates with opening and closing state threshold value Lock state；The present embodiment only needs to get the physical location of a mark point in earthing knife-switch by object plane resolution parameter, and divides "on" position threshold value is the location of mark point under earthing knife-switch opening and closing state.The present embodiment is by mark point current actual positions Opening and closing state can be judged by comparing with opening and closing state threshold value, with earthing knife-switch opening and closing state judgement more accurately with And simple advantage.
Embodiment two:
The present embodiment is basically the same as the first embodiment, and main distinction point is the geometrical characteristic that dot center's coordinate is marked in step 3) The type of selection is different, accordingly the specific implementation of step 3) also difference.
In the present embodiment, the geometrical characteristic of dot center's coordinate is marked to specifically refer to the moving contact for being respectively positioned on earthing knife-switch in step 3) The mark point centre coordinate line of two mark points upper and along moving contact length direction arrangement is relative to earthing knife-switch institute's horizontalization face Angle, step 3) include:
3.1B) basis is respectively positioned on along the mark point of two mark points on the moving contact of earthing knife-switch and along moving contact length direction arrangement Heart coordinate obtains mark point centre coordinate line, and obtains angle of the mark point centre coordinate line relative to earthing knife-switch institute's horizontalization face Degree；In the present embodiment, two mark points are arranged on the both ends of earthing knife-switch moving contact respectively.
3.2 B) mark point centre coordinate line demarcates the angle in earthing knife-switch institute's horizontalization face and preset gate-dividing state Value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, Then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, sentence Determine earthing knife-switch and is in "on" position.
In the present embodiment, step 3.2B) it before further include the step for demarcating gate-dividing state calibration value and "on" position calibration value Suddenly, it demarcates gate-dividing state calibration value and the step of "on" position calibration value includes:
Earthing knife-switch is placed in gate-dividing state, obtains earthing knife-switch two mark point centre coordinates in earthing knife-switch image under gate-dividing state, according to The mark point centre coordinate of two mark points obtains mark point centre coordinate line, and obtain mark point centre coordinate line for The first angle in earthing knife-switch institute's horizontalization face, using the first angle as preset gate-dividing state calibration value；E is denoted as in the present embodiment.
Earthing knife-switch is placed in "on" position, obtains earthing knife-switch two mark point centre coordinates in earthing knife-switch image under "on" position, Mark point centre coordinate line is obtained according to the mark point centre coordinate of two mark points, and obtains mark point centre coordinate line For the second angle in earthing knife-switch institute's horizontalization face, using the second angle as preset "on" position calibration value.Remember in the present embodiment For f.
By the angle (angle of the mark point centre coordinate line for earthing knife-switch institute's horizontalization face) and preset gate-dividing state mark When definite value and "on" position calibration value are compared, if the angle and the error of gate-dividing state calibration value e are less than preset threshold, Then it is determined as gate-dividing state；If the angle and the error of "on" position calibration value f are less than preset threshold, it is determined as the shape that closes a floodgate State.In the present embodiment, the corresponding preset threshold of error is (- 1 °, 1 °), and unit is degree.I.e. when two mark point lines relative to When the angle in earthing knife-switch institute's horizontalization face is in the range of e-1 degree to e+1 degree, then judge that earthing knife-switch is in gate-dividing state, is marked when two Point line relative to earthing knife-switch institute's horizontalization face angle in the range of f-1 degree to f+1 degree when, then judge that earthing knife-switch is in separating brake shape State.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, comprising:
Image acquisition procedure unit, for acquiring earthing knife-switch image；
Centre coordinate recognizer unit, for identification the mark point centre coordinate in earthing knife-switch image in earthing knife-switch out；
Opening and closing state determining program unit, for according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state mark Definite value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to default threshold Value, then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, Determine that earthing knife-switch is in "on" position.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, including computer equipment, it should Computer equipment is programmed to perform the step of the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or the meter It calculates to be stored on the storage medium of machine equipment and is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring side The computer program of method.
In addition, the present embodiment also provides a kind of computer readable storage medium, stored on the computer readable storage medium There is the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring equipment, including label dot element with And it is in communication with each other the computer equipment and image capture device of connection, label dot element includes the mark that at least one is set in earthing knife-switch Remember point, image capture device is mounted in switchgear and the earthing knife-switch of its camera lens switch-oriented cabinet, computer equipment are programmed to hold It is deposited on the storage medium of the step of row the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or computer equipment Contain the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
Referring to fig. 2, image capture module is camera 4 in the present embodiment；Camera 4 is arranged in switchgear and 3 face of camera lens Earthing knife-switch direction, the number of mark point 2 is two, and the mark point 2 is arranged on the moving contact 12 and stationary contact 11 of earthing knife-switch 1. But it is only necessary to use in two mark point 2(Fig. 2 on moving contact 12 only to draw one in the present embodiment).Computer is set Standby 5 are connected with camera 4, and computer equipment 5 is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring It is stored on the storage medium of the step of method or computer equipment 5 with being programmed to perform the present embodiment aforementioned switches cabinet The computer program of knife-like state non-contact monitoring method.In the present embodiment, the ground that aforementioned computer equipment 5 can will determine The switch status information of knife accesses to switchgear own system by way of dry contact, is transmitted by switchgear own system Double confirmation operations are carried out to scheduling.Wherein in Image Acquisition, it can control image capture module and adopted according to certain frequency acquisition Collection is disposed with the image of the earthing knife-switch of mark point；It is directed to the collected earthing knife-switch image for being disposed with mark point, passes through industrial ether Net is transmitted in switch cabinet monitoring system.
In conclusion the mark point number in the present embodiment method in earthing knife-switch can be set to two, the two mark points Can be along earthing knife-switch moving contact length direction be arranged, at this time according to two mark points in earthing knife-switch in current earthing knife-switch image in Heart coordinate determines angle of two mark point lines relative to earthing knife-switch institute's horizontalization face, then by the angle and gate-dividing state threshold value with And "on" position threshold value is compared, and determines earthing knife-switch opening and closing state according to comparison result；The present embodiment passes through current earthing knife-switch Two mark point centre coordinates can be directly obtained angle of two mark point lines relative to earthing knife-switch institute's horizontalization face in image, And opening and closing state threshold value is angle of two mark point lines relative to earthing knife-switch institute's horizontalization face under earthing knife-switch opening and closing state, this Angle of the invention by two mark point lines relative to earthing knife-switch institute's horizontalization face compares and can judge with opening and closing state threshold value Opening and closing state does not need to convert by object plane resolution parameter during this, sentencing with earthing knife-switch opening and closing state Fixed more accurate, convenient and simple advantage.
Embodiment three:
The present embodiment is basically the same as the first embodiment, and main distinction point is the geometrical characteristic that dot center's coordinate is marked in step 3) The type of selection is different, accordingly the specific implementation of step 3) also difference.
Marked in the present embodiment, in step 3) the geometrical characteristic of dot center's coordinate specifically refer to two mark points it is practical away from From, and a mark point is located on the moving contact of earthing knife-switch, another mark point is located on the static contact of earthing knife-switch, step 3) includes:
The mark point centre coordinate of two mark points 3.1C) is obtained, a mark point is located on the moving contact of earthing knife-switch, another is marked Note point is located on the static contact of earthing knife-switch；The mark point centre coordinate of two mark points is turned according to object plane resolution parameter Z respectively Be changed to actual position coordinate, the actual position coordinate for marking dot center according to two be calculated two mark points it is practical away from From；In the present embodiment, mark point number is two, and two mark points are separately positioned on moving contact and static contact, wherein dynamic touching Mark point on head is in moving contact top, and the mark point on static contact is in the top of static contact.
3.2C) actual range of two mark points and preset gate-dividing state calibration value and "on" position calibration value are carried out Compare, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, determines that earthing knife-switch is in gate-dividing state； If the error with preset "on" position calibration value is less than or equal to preset threshold, determine that earthing knife-switch is in "on" position.
In the present embodiment, step 3.1C) in by the mark point centre coordinate of two mark points respectively according to object plane resolution ratio Parameter Z is converted to actual position coordinate and specifically refers to the mark point centre coordinate (x ', y ') of mark point being based on preset object plane Resolution parameter Z is converted to the actual position coordinate (x '/Z, y '/Z) of mark point.
In the present embodiment, step 3.1C) further include the steps that demarcating object plane resolution parameter Z before, calibration object plane is differentiated The step of rate parameter Z, comprises determining that mark point, by size as unit of pixel, calculates the mark point in earthing knife-switch in earthing knife-switch image The ratio value between size, actual size in image as unit of pixel, and using the ratio value being calculated as object plane point Resolution parameter Z.
In the present embodiment, mark point is circle, and the size as unit of pixel refers to picture shared by digit synbol spot diameter Plain number, the actual size of mark point refer to the actual physical size of label spot diameter.
In the present embodiment, step 3.2C) it before further include the step for demarcating gate-dividing state calibration value and "on" position calibration value Suddenly, it demarcates gate-dividing state calibration value and the step of "on" position calibration value includes:
Earthing knife-switch is placed in gate-dividing state, obtains earthing knife-switch two mark point centre coordinates described in earthing knife-switch image under gate-dividing state, The mark point centre coordinate for obtaining two mark points, by the mark point centre coordinate of two mark points respectively according to object plane resolution ratio Parameter Z is converted to actual position coordinate, marks the actual position coordinate of dot center that two mark points are calculated according to two First actual range, using first actual range as preset gate-dividing state calibration value；A is denoted as in the present embodiment.
Earthing knife-switch is placed in "on" position, earthing knife-switch two label dot center described in earthing knife-switch image under gate-dividing state is obtained and sits Mark, obtains the mark point centre coordinate of two mark points, by the mark point centre coordinate of two mark points respectively according to object plane point Resolution parameter Z is converted to actual position coordinate, marks the actual position coordinate of dot center that two labels are calculated according to two Second actual range of point, using second actual range as preset gate-dividing state calibration value.B is denoted as in the present embodiment.
Step 3.2C) by the actual range of two mark points and preset gate-dividing state calibration value and "on" position calibration value When being compared, according to the opening and closing state threshold value of earthing knife-switch, the division of earthing knife-switch is determined by the determination to earthing knife-switch current location Lock state.In the present embodiment, when earthing knife-switch opening and closing state to be determined, according to the actual bit of two label dot center in earthing knife-switch Set the actual range that coordinate calculates two mark points；By it is above-mentioned get actual range respectively with gate-dividing state threshold value and conjunction Lock state threshold is compared, if actual range within the scope of gate-dividing state threshold preset, judges that earthing knife-switch is in gate-dividing state, If actual range within the scope of "on" position threshold preset, judges that earthing knife-switch is in "on" position.It is above-mentioned default in the present embodiment Threshold value value be (- 1,1), unit mm, i.e., when the actual range of two mark points is in the range of a-1mm to a+1mm, Then judge that earthing knife-switch is in gate-dividing state, when the actual range of two mark points is in the range of b-1mm to b+1mm, then judges Earthing knife-switch is in gate-dividing state.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, comprising:
Image acquisition procedure unit, for acquiring earthing knife-switch image；
Centre coordinate recognizer unit, for identification the mark point centre coordinate in earthing knife-switch image in earthing knife-switch out；
Opening and closing state determining program unit, for according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state mark Definite value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to default threshold Value, then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, Determine that earthing knife-switch is in "on" position.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring system, including computer equipment, it should Computer equipment is programmed to perform the step of the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or the meter It calculates to be stored on the storage medium of machine equipment and is programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring side The computer program of method.
In addition, the present embodiment also provides a kind of computer readable storage medium, stored on the computer readable storage medium There is the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
In addition, the present embodiment also provides a kind of grounding knife of switch cabinet state non-contact monitoring equipment, including label dot element with And it is in communication with each other the computer equipment and image capture device of connection, label dot element includes the mark that at least one is set in earthing knife-switch Remember point, image capture device is mounted in switchgear and the earthing knife-switch of its camera lens switch-oriented cabinet, computer equipment are programmed to hold It is deposited on the storage medium of the step of row the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method or computer equipment Contain the computer program for being programmed to perform the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.
Referring to fig. 2, image capture module is camera 4 in the present embodiment；Camera 4 is arranged in switchgear and 3 face of camera lens Earthing knife-switch direction, the number of mark point 2 is two, and the mark point 2 is arranged on the moving contact 12 and stationary contact 11 of earthing knife-switch 1. But the mark point 2 in the present embodiment on moving contact 12 and stationary contact 11 is required to using (only drawing moving contact 12 in Fig. 2 One mark point 2).Computer equipment 5 is then connected with camera 4, and computer equipment 5 is programmed to perform the present embodiment aforementioned switches It is stored with and is programmed to perform on the storage medium of the step of cabinet earthing knife-switch state non-contact monitoring method or computer equipment 5 The computer program of the present embodiment aforementioned switches cabinet earthing knife-switch state non-contact monitoring method.In the present embodiment, aforementioned computer The switch status information of the earthing knife-switch determined can be accessed to switchgear own system by equipment 5 by way of dry contact, Scheduling, which is transmitted to, by switchgear own system carries out double confirmation operations.Wherein in Image Acquisition, Image Acquisition can control Module is disposed with the image of the earthing knife-switch of mark point according to certain frequency acquisition acquisition；It is directed to the collected mark point of being disposed with Earthing knife-switch image, is transmitted in switch cabinet monitoring system by Industrial Ethernet.
In conclusion the mark point number in the present embodiment method in earthing knife-switch can be set to two, the two mark points It can be separately positioned on the moving contact and static contact of earthing knife-switch, need to calibrate object plane resolution parameter in such case；When wanting When determining earthing knife-switch opening and closing state, according to centre coordinate and object plane of two mark points in earthing knife-switch in current earthing knife-switch image point Resolution parameter respectively corresponds to obtain the actual position coordinate of two label dot center, and the physical location of dot center is marked according to two Coordinate calculates the actual range of two mark points；It is got above-mentioned after actual range is compared with opening and closing state threshold value It can judge earthing knife-switch opening and closing state；The present embodiment gets two mark point actual bits of earthing knife-switch by object plane resolution parameter It sets, the actual range between two mark points is gone out according to actual calculation of location, and opening and closing state threshold value is earthing knife-switch divide-shut brake The distance between two mark points under state, using the actual range between two mark points as the judgement of earthing knife-switch opening and closing state According to being compared with opening and closing state threshold value, enable to the judgement of earthing knife-switch opening and closing state more accurate.
It should be noted that one~embodiment of embodiment three is only to carry out to the geometrical characteristic of mark point centre coordinate Two kinds of specific embodiments, under the inspiration of above-described embodiment, those skilled in the art, which also can according to need, selects other classes The geometrical characteristic of note dot center's coordinate of type, such as can choose other kinds of reference point or line or face and calculate its seat The geometrical characteristic of mark or distance or angle as mark point centre coordinate, principle and above one~embodiment of embodiment three The basic principle of record is identical, therefore details are not described herein.
In addition, the present embodiment also provides a kind of double confirmation methods of grounding knife of switch cabinet status monitoring, implementation step includes:
Step 1: being sentenced using the opening and closing state of existing earthing knife-switch opening and closing state method confirmation grounding knife of switch cabinet state as first According to；Meanwhile it being opened using any grounding knife of switch cabinet state non-contact monitoring method determination of one~embodiment of embodiment three above The opening and closing state of cabinet earthing knife-switch state is closed as Second Criterion；
Step 2: the first criterion and Second Criterion are carried out logic and operation, if the first criterion and Second Criterion are to close a floodgate State then finally determines that grounding knife of switch cabinet state is "on" position；If the first criterion and Second Criterion are gate-dividing state, It is final to determine that grounding knife of switch cabinet state is gate-dividing state, to realize double confirmations of grounding knife of switch cabinet status monitoring.
Wherein, existing earthing knife-switch opening and closing state method preferably uses existing contact method, i.e., in the open position of earthing knife-switch / combined floodgate auxiliary contact are arranged with point with closing position, the conducting of separating brake auxiliary contact, auxiliary of closing a floodgate touching when being located at gate-dividing state Point disconnects；When being located at "on" position, the conducting of combined floodgate auxiliary contact, separating brake auxiliary contact are disconnected；Otherwise divide/close a floodgate auxiliary contact It is completely in disconnection, to realize contact status monitoring.Unquestionably, existing earthing knife-switch opening and closing state method is not limited to certain Specific grounding knife of switch cabinet state monitoring method also can according to need using any other contact or contactless open Cabinet earthing knife-switch state monitoring method is closed, it equally can also be in conjunction with any grounding knife of switch cabinet shape of one~embodiment of embodiment three above Double confirmations of state non-contact monitoring method realization grounding knife of switch cabinet status monitoring.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more, The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces The form of product.The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram. These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices work in a specific way In the computer-readable memory of work, so that it includes command device that instruction stored in the computer readable memory, which generates, Manufacture, the command device are realized in one or more flows of the flowchart and/or one or more blocks of the block diagram In specify function.These computer program instructions also can be loaded onto a computer or other programmable data processing device, and make It obtains and executes series of operation steps on a computer or other programmable device to generate computer implemented processing, thus counting The instruction executed on calculation machine or other programmable devices is provided for realizing in one or more flows of the flowchart and/or side The step of function of being specified in block diagram one box or multiple boxes.
The above is only a preferred embodiment of the present invention, protection scope of the present invention is not limited merely to above-mentioned implementation Example, all technical solutions belonged under thinking of the present invention all belong to the scope of protection of the present invention.It should be pointed out that for the art Those of ordinary skill for, several improvements and modifications without departing from the principles of the present invention, these improvements and modifications It should be regarded as protection scope of the present invention.

Claims (22)

1. a kind of grounding knife of switch cabinet state non-contact monitoring method, which is characterized in that implementation steps include:
1) earthing knife-switch image is acquired；
2) the mark point centre coordinate in earthing knife-switch image in earthing knife-switch is identified；
3) it is carried out according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state calibration value and "on" position calibration value Compare, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, determines that earthing knife-switch is in gate-dividing state； If the error with preset "on" position calibration value is less than or equal to preset threshold, determine that earthing knife-switch is in "on" position.
2. grounding knife of switch cabinet state non-contact monitoring method according to claim 1, which is characterized in that step 1) is locality Further include the steps that when knife image by open light source to earthing knife-switch light filling, after completing earthing knife-switch Image Acquisition closing light source.
3. grounding knife of switch cabinet state non-contact monitoring method according to claim 1, which is characterized in that step 2 includes: The grey scale centre of gravity of the single marking point in earthing knife-switch image on earthing knife-switch moving contact is calculated using grey scale centre of gravity calculation method as ground Mark point centre coordinate in knife image.
4. grounding knife of switch cabinet state non-contact monitoring method according to claim 1, which is characterized in that step 2 includes: The grey scale centre of gravity of two mark points in earthing knife-switch image on earthing knife-switch moving contact is calculated separately out using grey scale centre of gravity calculation method, so Afterwards using the line midpoint of the grey scale centre of gravity of two mark points as mark point centre coordinate.
5. grounding knife of switch cabinet state non-contact monitoring method according to claim 1, which is characterized in that also wrapped in step 3) The geometrical characteristic for including mark point centre coordinate is greater than preset threshold simultaneously and is preset with the error of preset gate-dividing state calibration value "on" position calibration value error be greater than preset threshold in the case where determine earthing knife-switch the step of being in divide-shut brake intermediate state.
6. grounding knife of switch cabinet state non-contact monitoring method, feature described according to claim 1~any one of 5 exist In the geometrical characteristic of label dot center's coordinate specifically refers to the actual position coordinate of mark point centre coordinate in step 3)；Step 3) include:
Mark point centre coordinate 3.1A) is converted to the actual position coordinate of mark point；
3.2A) actual position coordinate of mark point and preset gate-dividing state calibration value and "on" position calibration value are compared Compared with determining that earthing knife-switch is in gate-dividing state if being less than or equal to preset threshold with the error of preset gate-dividing state calibration value；Such as The error of fruit and preset "on" position calibration value is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position.
7. grounding knife of switch cabinet state non-contact monitoring method according to claim 6, which is characterized in that step 3.1A) in The actual position coordinate that mark point centre coordinate is converted to mark point is specifically referred to for mark point centre coordinate (x ', y ') being based on Preset object plane resolution parameter Z is converted to the actual position coordinate (x '/Z, y '/Z) of mark point.
8. grounding knife of switch cabinet state non-contact monitoring method according to claim 7, which is characterized in that step 3.1A) it Before further include the steps that demarcate object plane resolution parameter Z, demarcate object plane resolution parameter Z the step of comprise determining that mark point exists Size in earthing knife-switch image as unit of pixel calculates the mark point in earthing knife-switch image by size, the reality as unit of pixel Ratio value between size, and using the ratio value being calculated as object plane resolution parameter Z.
9. grounding knife of switch cabinet state non-contact monitoring method according to claim 8, which is characterized in that the mark point is Circle, the size as unit of pixel refer to number of pixels shared by digit synbol spot diameter, the reality of the mark point Size refers to the actual physical size of label spot diameter.
10. grounding knife of switch cabinet state non-contact monitoring method according to claim 6, which is characterized in that step 3.2A) it Before further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value, demarcate gate-dividing state calibration value and "on" position The step of calibration value includes: the earthing knife-switch image acquired under gate-dividing state, identifies the label gone out in earthing knife-switch image under gate-dividing state Mark point centre coordinate under gate-dividing state is converted to the first actual position coordinate of mark point by dot center's coordinate, and should First actual position coordinate is as preset gate-dividing state calibration value；The earthing knife-switch image under "on" position is acquired, identifies combined floodgate shape The mark point centre coordinate gone out in earthing knife-switch image under state, is converted to mark point for the mark point centre coordinate under "on" position Second actual position coordinate, and using second actual position coordinate as preset "on" position calibration value.
11. grounding knife of switch cabinet state non-contact monitoring method according to claim 6, which is characterized in that step 3.2A) packet It includes: the actual position coordinate of mark point is compared with preset gate-dividing state calibration value and "on" position calibration value, if Meet formula (1) then to determine to be less than or equal to preset threshold with the error of preset gate-dividing state calibration value, earthing knife-switch is in gate-dividing state； Determine to be less than or equal to preset threshold with the error of preset "on" position calibration value if meeting formula (2), earthing knife-switch, which is in, closes a floodgate State；
x∈(x1-a,x1+ a) and y ∈ (y1-a,y1+ a) (1)
x∈(x2-b,x2+ b) and y ∈ (y2-b,y2+ b) (2)
In formula (1) and formula (2), (x, y) is the actual position coordinate of mark point, (x1,y1) it is gate-dividing state calibration value, (x2,y2) For "on" position calibration value, a is the preset threshold that gate-dividing state determines, b is the preset threshold that "on" position determines.
12. grounding knife of switch cabinet state non-contact monitoring method, feature described according to claim 1~any one of 5 exist In the geometrical characteristic of label dot center's coordinate specifically refers to be respectively positioned on the moving contact of earthing knife-switch and along moving contact length in step 3) Angle of the mark point centre coordinate line of two mark points of direction arrangement relative to earthing knife-switch institute's horizontalization face, step 3) include:
3.1B) basis is respectively positioned on along the mark point of two mark points on the moving contact of earthing knife-switch and along moving contact length direction arrangement Heart coordinate obtains mark point centre coordinate line, and obtains angle of the mark point centre coordinate line relative to earthing knife-switch institute's horizontalization face Degree；
3.2 B) by mark point centre coordinate line for earthing knife-switch institute's horizontalization face angle and preset gate-dividing state calibration value and "on" position calibration value is compared, if the error with preset gate-dividing state calibration value is less than or equal to preset threshold, is sentenced Determine earthing knife-switch and is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, determine ground Knife is in "on" position.
13. grounding knife of switch cabinet state non-contact monitoring method according to claim 12, which is characterized in that step 3.2B) Further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value before, demarcates gate-dividing state calibration value and combined floodgate shape The step of state calibration value includes: that earthing knife-switch is placed in gate-dividing state, obtains earthing knife-switch two labels in earthing knife-switch image under gate-dividing state Dot center's coordinate obtains mark point centre coordinate line according to the mark point centre coordinate of two mark points, and obtains mark point Centre coordinate line for earthing knife-switch institute's horizontalization face first angle, using the first angle as preset gate-dividing state calibration value； Earthing knife-switch is placed in "on" position, earthing knife-switch two mark point centre coordinates in earthing knife-switch image under "on" position are obtained, according to two The mark point centre coordinate of mark point obtains mark point centre coordinate line, and obtains mark point centre coordinate line for earthing knife-switch The second angle in institute's horizontalization face, using the second angle as preset "on" position calibration value.
14. grounding knife of switch cabinet state non-contact monitoring method, feature described according to claim 1~any one of 5 exist In the geometrical characteristic of label dot center's coordinate specifically refers to the actual range of two mark points, and a mark point in step 3) On the moving contact of earthing knife-switch, another mark point be located on the static contact of earthing knife-switch, step 3) includes:
The mark point centre coordinate of two mark points 3.1C) is obtained, a mark point is located on the moving contact of earthing knife-switch, another is marked Note point is located on the static contact of earthing knife-switch；The mark point centre coordinate of two mark points is turned according to object plane resolution parameter Z respectively Be changed to actual position coordinate, the actual position coordinate for marking dot center according to two be calculated two mark points it is practical away from From；
3.2C) actual range of two mark points and preset gate-dividing state calibration value and "on" position calibration value are compared Compared with determining that earthing knife-switch is in gate-dividing state if being less than or equal to preset threshold with the error of preset gate-dividing state calibration value；Such as The error of fruit and preset "on" position calibration value is less than or equal to preset threshold, then determines that earthing knife-switch is in "on" position.
15. grounding knife of switch cabinet state non-contact monitoring method according to claim 14, which is characterized in that step 3.1C) The middle mark point centre coordinate by two mark points is converted to actual position coordinate according to object plane resolution parameter Z respectively and is specifically Refer to the reality that the mark point centre coordinate (x ', y ') of mark point is converted to mark point based on preset object plane resolution parameter Z Border position coordinates (x '/Z, y '/Z).
16. grounding knife of switch cabinet state non-contact monitoring method according to claim 15, which is characterized in that step 3.1C) Further include the steps that comprising determining that mark point the step of demarcating object plane resolution parameter Z, demarcate object plane resolution parameter Z before By size as unit of pixel in earthing knife-switch image, the mark point is calculated in earthing knife-switch image by size, the reality as unit of pixel Ratio value between the size of border, and using the ratio value being calculated as object plane resolution parameter Z.
17. grounding knife of switch cabinet state non-contact monitoring method according to claim 16, which is characterized in that the mark point For circle, the size as unit of pixel refers to number of pixels shared by digit synbol spot diameter, the reality of the mark point Border size refers to the actual physical size of label spot diameter.
18. grounding knife of switch cabinet state non-contact monitoring method according to claim 14, which is characterized in that step 3.2C) Further include the steps that demarcating gate-dividing state calibration value and "on" position calibration value before, demarcates gate-dividing state calibration value and combined floodgate shape The step of state calibration value includes: that earthing knife-switch is placed in gate-dividing state, and acquisition earthing knife-switch is under gate-dividing state two described in earthing knife-switch image Mark point centre coordinate obtains the mark point centre coordinate of two mark points, by the mark point centre coordinate of two mark points point Actual position coordinate is not converted to according to object plane resolution parameter Z, marks the actual position coordinate of dot center to calculate according to two First actual range of two mark points is obtained, using first actual range as preset gate-dividing state calibration value；By earthing knife-switch It is placed in "on" position, earthing knife-switch two mark point centre coordinates described in earthing knife-switch image under gate-dividing state is obtained, obtains two marks The mark point centre coordinate for remembering point converts the mark point centre coordinate of two mark points according to object plane resolution parameter Z respectively For actual position coordinate, the actual position coordinate for marking dot center according to two be calculated two mark points second it is practical away from From using second actual range as preset gate-dividing state calibration value.
19. a kind of grounding knife of switch cabinet state non-contact monitoring system characterized by comprising
Image acquisition procedure unit, for acquiring earthing knife-switch image；
Centre coordinate recognizer unit, for identification the mark point centre coordinate in earthing knife-switch image in earthing knife-switch out；
Opening and closing state determining program unit, for according to the geometrical characteristic of mark point centre coordinate and preset gate-dividing state mark Definite value and "on" position calibration value are compared, if the error with preset gate-dividing state calibration value is less than or equal to default threshold Value, then determine that earthing knife-switch is in gate-dividing state；If the error with preset "on" position calibration value is less than or equal to preset threshold, Determine that earthing knife-switch is in "on" position.
20. a kind of grounding knife of switch cabinet state non-contact monitoring system, including computer equipment, which is characterized in that the computer is set Standby the step of being programmed to perform grounding knife of switch cabinet state non-contact monitoring method described in any one of claim 1~18, Or it is stored on the storage medium of the computer equipment and is programmed to perform switch described in any one of claim 1~18 The computer program of cabinet earthing knife-switch state non-contact monitoring method.
21. a kind of computer readable storage medium, which is characterized in that be stored with and be programmed on the computer readable storage medium The computer program of grounding knife of switch cabinet state non-contact monitoring method described in any one of perform claim requirement 1~18.
22. a kind of grounding knife of switch cabinet state non-contact monitoring equipment, which is characterized in that including label dot element and be in communication with each other The computer equipment and image capture device of connection, the label dot element include the mark point that at least one is set in earthing knife-switch, Described image acquisition equipment is mounted in switchgear and the earthing knife-switch of its camera lens switch-oriented cabinet, the computer equipment are programmed to The step of grounding knife of switch cabinet state non-contact monitoring method described in any one of perform claim requirement 1~18 or the meter It calculates to be stored on the storage medium of machine equipment and is programmed to perform grounding knife of switch cabinet shape described in any one of claim 1~18 The computer program of state non-contact monitoring method.
CN201910324214.7A 2019-04-22 2019-04-22 Switch cabinet grounding knife state non-contact monitoring method, system, medium and equipment Active CN110148118B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910324214.7A CN110148118B (en) 2019-04-22 2019-04-22 Switch cabinet grounding knife state non-contact monitoring method, system, medium and equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910324214.7A CN110148118B (en) 2019-04-22 2019-04-22 Switch cabinet grounding knife state non-contact monitoring method, system, medium and equipment

Publications (2)

Publication Number Publication Date
CN110148118A true CN110148118A (en) 2019-08-20
CN110148118B CN110148118B (en) 2021-12-03

Family

ID=67593816

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910324214.7A Active CN110148118B (en) 2019-04-22 2019-04-22 Switch cabinet grounding knife state non-contact monitoring method, system, medium and equipment

Country Status (1)

Country Link
CN (1) CN110148118B (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113780191A (en) * 2021-09-14 2021-12-10 西安西电开关电气有限公司 Method and system for identifying opening and closing state image of starting drag switch of power station
CN114646277A (en) * 2022-03-16 2022-06-21 广东电网有限责任公司 Method, device, equipment and medium for determining offset angle of isolating switch
CN116660741A (en) * 2023-07-26 2023-08-29 天津宜科自动化股份有限公司 Breaker turn-off detection method for intelligent base station

Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101477685A (en) * 2009-01-15 2009-07-08 西安交通大学 Sub-pixel level image detection process with field part depth machining quality
CN102622615A (en) * 2012-02-24 2012-08-01 山东鲁能智能技术有限公司 Knife switch state closing reliability judging method based on distance between knife switch arm feature points
CN102622614A (en) * 2012-02-24 2012-08-01 山东鲁能智能技术有限公司 Knife switch closing reliability judging method based on distance between knife switch arm feature point and fixing end
CN103454285A (en) * 2013-08-28 2013-12-18 南京师范大学 Transmission chain quality detection system based on machine vision
US20140346023A1 (en) * 2013-05-24 2014-11-27 Thomas & Betts International, Inc. Automated grounding device with visual indication
CN104297680A (en) * 2014-10-29 2015-01-21 杭州凯达电力建设有限公司 Switch position detecting method and system
CN104457621A (en) * 2014-12-22 2015-03-25 国家电网公司 Pattern displacement sensor system for detecting position state of disconnecting link of transformer substation
CN104697768A (en) * 2014-12-23 2015-06-10 华北电力大学（保定） Method for testing movement characteristics of dynamic contact of high-voltage circuit breaker
CN105300320A (en) * 2015-12-04 2016-02-03 华北电力大学（保定） Breaker angular displacement characteristic detection method based on double auxiliary markers
CN105489414A (en) * 2016-01-07 2016-04-13 上海电力学院 Video ranging-based position monitoring and displaying method for open high-voltage isolating switch
CN105869164A (en) * 2016-03-28 2016-08-17 国网浙江省电力公司宁波供电公司 Method and system for detecting on/off state of switch
CN106526467A (en) * 2016-10-14 2017-03-22 西安交通大学 High voltage circuit breaker switch-on and switch-off speed characteristic measurement method based on machine vision
CN106952277A (en) * 2017-03-21 2017-07-14 中国人民解放军国防科学技术大学 A kind of two-value rocker switch method for detecting position based on image procossing
CN108225281A (en) * 2017-12-25 2018-06-29 中国航空工业集团公司洛阳电光设备研究所 A kind of pilot's head pose detection method based on video camera
CN108489425A (en) * 2018-04-24 2018-09-04 西安图玛智能科技有限公司 A kind of round-the-clock automatic video frequency monitoring system and method for disconnecting switch opening and closing state
CN108510468A (en) * 2017-02-28 2018-09-07 深圳市朗驰欣创科技股份有限公司 A kind of method and apparatus of identification electromagnetic valve switch state
CN109271872A (en) * 2018-08-22 2019-01-25 国网电力科学研究院武汉南瑞有限责任公司 A kind of judgement of high voltage isolator division state and trouble-shooter and method

Patent Citations (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101477685A (en) * 2009-01-15 2009-07-08 西安交通大学 Sub-pixel level image detection process with field part depth machining quality
CN102622615A (en) * 2012-02-24 2012-08-01 山东鲁能智能技术有限公司 Knife switch state closing reliability judging method based on distance between knife switch arm feature points
CN102622614A (en) * 2012-02-24 2012-08-01 山东鲁能智能技术有限公司 Knife switch closing reliability judging method based on distance between knife switch arm feature point and fixing end
US20140346023A1 (en) * 2013-05-24 2014-11-27 Thomas & Betts International, Inc. Automated grounding device with visual indication
CN103454285A (en) * 2013-08-28 2013-12-18 南京师范大学 Transmission chain quality detection system based on machine vision
CN104297680A (en) * 2014-10-29 2015-01-21 杭州凯达电力建设有限公司 Switch position detecting method and system
CN104457621A (en) * 2014-12-22 2015-03-25 国家电网公司 Pattern displacement sensor system for detecting position state of disconnecting link of transformer substation
CN104697768A (en) * 2014-12-23 2015-06-10 华北电力大学（保定） Method for testing movement characteristics of dynamic contact of high-voltage circuit breaker
CN105300320A (en) * 2015-12-04 2016-02-03 华北电力大学（保定） Breaker angular displacement characteristic detection method based on double auxiliary markers
CN105489414A (en) * 2016-01-07 2016-04-13 上海电力学院 Video ranging-based position monitoring and displaying method for open high-voltage isolating switch
CN105869164A (en) * 2016-03-28 2016-08-17 国网浙江省电力公司宁波供电公司 Method and system for detecting on/off state of switch
CN106526467A (en) * 2016-10-14 2017-03-22 西安交通大学 High voltage circuit breaker switch-on and switch-off speed characteristic measurement method based on machine vision
CN108510468A (en) * 2017-02-28 2018-09-07 深圳市朗驰欣创科技股份有限公司 A kind of method and apparatus of identification electromagnetic valve switch state
CN106952277A (en) * 2017-03-21 2017-07-14 中国人民解放军国防科学技术大学 A kind of two-value rocker switch method for detecting position based on image procossing
CN108225281A (en) * 2017-12-25 2018-06-29 中国航空工业集团公司洛阳电光设备研究所 A kind of pilot's head pose detection method based on video camera
CN108489425A (en) * 2018-04-24 2018-09-04 西安图玛智能科技有限公司 A kind of round-the-clock automatic video frequency monitoring system and method for disconnecting switch opening and closing state
CN109271872A (en) * 2018-08-22 2019-01-25 国网电力科学研究院武汉南瑞有限责任公司 A kind of judgement of high voltage isolator division state and trouble-shooter and method

Non-Patent Citations (6)

* Cited by examiner, † Cited by third party
Title
吕代铭 等: "《煤矿测量手持》", 31 December 1979, 煤炭工业出版社 *
张淑琴 等: "《空间交会对接测量技术及工程应用》", 31 October 2015, 中国宇航出版社 *
徐銤 等: "《快堆电气系统与设备》", 31 March 2012, 中国原子能出版社 *
杨帆: "《数字图像处理与分析》", 31 January 2019, 北京航空航天大学出版社 *
蒋少华: "《多源图像处理技术》", 31 July 2012, 湖南师范大学出版社 *
许琳娟 等: "《非均匀沙床面颗粒运动试验研究》", 31 October 2018, 黄河水利出版社 *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113780191A (en) * 2021-09-14 2021-12-10 西安西电开关电气有限公司 Method and system for identifying opening and closing state image of starting drag switch of power station
CN114646277A (en) * 2022-03-16 2022-06-21 广东电网有限责任公司 Method, device, equipment and medium for determining offset angle of isolating switch
CN114646277B (en) * 2022-03-16 2023-05-30 广东电网有限责任公司 Method, device, equipment and medium for determining offset angle of isolating switch
CN116660741A (en) * 2023-07-26 2023-08-29 天津宜科自动化股份有限公司 Breaker turn-off detection method for intelligent base station
CN116660741B (en) * 2023-07-26 2023-11-14 天津宜科自动化股份有限公司 Breaker turn-off detection method for intelligent base station

Also Published As

Publication number Publication date
CN110148118B (en) 2021-12-03

Similar Documents

Publication Publication Date Title
CN110148118A (en) A kind of grounding knife of switch cabinet state non-contact monitoring method, system, medium and equipment
CN110018415A (en) Disconnecting switch divide-shut brake position detection and double confirmation detection methods, system and medium based on attitude transducer
CN106597231B (en) GIS fault detection system and method based on Multi-source Information Fusion and deep learning network
CN102412627B (en) Image identification-based intelligent transformer substation state monitoring system
CN108489425B (en) All-weather automatic video monitoring system and method for opening and closing states of isolating switch
CN110084946B (en) System and method for five-prevention locking based on wearable equipment
CN111431284B (en) BIM technology-based intelligent transformer substation management and control system
CN108815784A (en) A kind of fire fighting monitoring terminal and fire-fighting safety system
CN105978145B (en) Secondary system of intelligent substation information fusion system
CN111753712A (en) Method, system and equipment for monitoring safety of power production personnel
CN202976409U (en) Radioactive source multiple locating supervision system
CN113988633A (en) Anti-misoperation system of digital twin transformer substation
CN103389427B (en) GIS equipment operational condition online test method and system
CN103699004B (en) Based on automatic transfer switching electric appliance control system and the control method of parallel function
CN108645638A (en) A kind of method, apparatus and electronic equipment for derrick crane fault diagnosis
CN103887877B (en) A kind of thermal power plant's reverse prompt terminal of intelligent inspection system and method
CN209043996U (en) A kind of safety patrol device of power equipment
CN107369295A (en) 1000kV extra-high-voltage alternating current station mistaken collision preventing methods
CN202334001U (en) Image recognition-based intelligent transformer substation status monitoring system
CN109887031A (en) Position and posture detection method, system, medium and the equipment of earthing knife-switch in a kind of switchgear
CN109633375A (en) A kind of power distribution network safe distance recognition methods and device
CN208125077U (en) A kind of round-the-clock automatic video frequency monitoring system of disconnecting switch opening and closing state
CN106248215A (en) A kind of real-time calculating system of power transformer critical component running temperature
CN110598750A (en) Working condition identification method based on switch machine action curve similarity characteristics
CN206757363U (en) The transformer substation operation safety detecting system positioned based on laser scanning and ultra wide band

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant