CN107657601A - A kind of substation equipment division physical location monitoring device and method - Google Patents
A kind of substation equipment division physical location monitoring device and method Download PDFInfo
- Publication number
- CN107657601A CN107657601A CN201710636718.3A CN201710636718A CN107657601A CN 107657601 A CN107657601 A CN 107657601A CN 201710636718 A CN201710636718 A CN 201710636718A CN 107657601 A CN107657601 A CN 107657601A
- Authority
- CN
- China
- Prior art keywords
- image
- picture
- physical location
- equipment
- camera
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F16/00—Information retrieval; Database structures therefor; File system structures therefor
- G06F16/50—Information retrieval; Database structures therefor; File system structures therefor of still image data
- G06F16/58—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
- G06F16/583—Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using metadata automatically derived from the content
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/11—Region-based segmentation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T7/00—Image analysis
- G06T7/10—Segmentation; Edge detection
- G06T7/136—Segmentation; Edge detection involving thresholding
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V20/00—Scenes; Scene-specific elements
- G06V20/50—Context or environment of the image
- G06V20/52—Surveillance or monitoring of activities, e.g. for recognising suspicious objects
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0817—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking functioning
-
- 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
- G06T2207/10016—Video; Image sequence
-
- 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 substation equipment division physical location monitoring device and its method.Device includes front-end image harvester, data centralised arrangement and background server, front-end image harvester is arranged on equipment operation mechanism nearby and is connected by wireless network with data centralised arrangement, state picture at field device operation mechanism divide-shut brake is sent to data centralised arrangement, the data centralised arrangement is connected to background server by wired or wireless way, state picture at the field device operation mechanism divide-shut brake received is transmitted to background server, the background server judges the actual division physical location of equipment in sequence operation after handling state picture at field device operation mechanism divide-shut brake.The present invention solves the problem of actual divide-shut brake physical location monitoring during middle substation sequence control operation equipment, improves automation of transformation substations level monitoring, and reducing operation maintenance personnel must stay-at-home the problem of checking equipment state at any time at the scene in regular job.
Description
Technical field
The present invention relates to a kind of substation equipment division physical location monitoring device and method, belongs to transformer station's divide-shut brake prison
Survey technology field.
Background technology
With the popularization of Intelligent transformer station, the sequential control technology of transformer station has also obtained substantial amounts of application, for suitable
The automatic monitoring function of equipment divide-shut brake physical location of sequence control technology, there is presently no more effective solution.Therefore, lack
Second of criterion that its physical location is judged after few circuit-breaker switching on-off operation is to influence sequential operation control operating reliability
Main restricting factor.At this stage, auxiliary contact of the electrical equipment positional information all in accordance with equipment used in sequential control operation
On position signalling judge its physical location.
In transformer station, the connecting and disconnecting of high-current circuit are controlled with divide-shut brake, in some scenarios, such as are sent out
, it is necessary to know that divide-shut brake is in closure state or cut-offs state when raw disconnection fault or routine inspection.Through retrieval, sentence at present
Disconnected divide-shut brake folding whether method is to send someone to scene to detect by an unaided eye, but transformer station may be with the resident place of staff
There is larger distance, wasted time and energy to live artificial observation, it is very inconvenient.And transformer station's quantity is more, distribution is wide, if desired
Know that the opening and closing state of multiple transformer stations just needs a large amount of manpowers simultaneously.Simultaneously because the reason for external force and machine ages, become
Divide-shut brake also is difficult to keep permanent safe handling state everywhere in power station.The machinery event of divide-shut brake operating mechanism and transmission system
Barrier, electrical control, subsidiary loop etc. are likely to cause on off state to malfunction, and original high-tension switch cabinet internal isolating switch
Actual state can not intuitively, be correctly shown with the indicating mode of the actuating situation of earthed switch.As remedial measure, it is necessary to
Realization realizes visual monitoring to the divide-shut brake in high-tension switch cabinet.Abnormal place could be found and detect in time, just
It is avoided that the generation of accident.The physical location state of breaker is by its auxiliary contact by delivering to background monitoring system on measure and control device
System, the anti-misoperation of disconnecting switch are also that the normally opened auxiliary contact of breaker is concatenated in its control loop to realize.When disconnected
Road device is performed in the sequential control operating process for switching to maintenance by operation, if there is the false isloation state of breaker, i.e. breaker
Main contact is not turned off, and the position relay dead electricity of its auxiliary contact is that breaker has disconnected to background monitoring feedback information,
The situation of the pernicious misoperation fault of charged misconnecting earthed switch can be then caused to occur.
The content of the invention
For above-mentioned deficiency, the invention provides a kind of substation equipment division physical location monitoring device and method, its
Can not only divide-shut brake physical location state effectively in monitoring substation, and substation field information can be uploaded to backstage
Server takes associative operation for staff.
The present invention solves its technical problem and adopted the technical scheme that：
A kind of substation equipment division physical location monitoring device, it includes the front end figure being oppositely arranged with substation equipment
As harvester, data centralised arrangement and background server, front-end image harvester be arranged on equipment operation mechanism nearby and
It is connected by wireless network with data centralised arrangement, state picture at field device operation mechanism divide-shut brake is sent to data set
Middle device, the data centralised arrangement are connected to background server by wired or wireless way, the field apparatus that will be received
State picture is transmitted to background server at operating mechanism divide-shut brake, and the background server is to the division of field device operation mechanism
State picture judges the actual division physical location of equipment in sequence operation at lock after being handled.
Preferably, the front-end image harvester include change in location sensing device further, camera, terminal processing units and
Wireless communication module, the change in location sensing device further are arranged in equipment operation mechanism, moved to sensor device operating mechanism
Make information and be sent to terminal processing units；The camera face switch or disconnecting link mechanical location, to according to terminal processes
The photographing command of unit is taken pictures to equipment operation mechanism and shooting picture is sent into terminal processing units；The end
Reason unit carries out the equipment operation mechanism action information sent of change in location sensing device further and sent to camera to clap to receive
Camera is transmitted to according to order or the photographing instruction for sending host computer, at the shooting picture sent to receiving camera
Data centralised arrangement is sent to by wireless communication module after reason.
Preferably, the change in location sensing device further includes the sensor for sensor device operating mechanism position, is setting
Magnetic inductive block is provided with standby operating mechanism, magnetic inductive block can move as equipment operation mechanism is mobile, and sensor includes magnet cartridge
Put and be used for the position of equipment operation mechanism with Hall effect sensing part, Hall effect sensing part；When the magnetic inductive block with
When equipment operation mechanism moves, magnetic field caused by the magnet arrangement changes, and the Hall effect sensing part is with magnetic
Change and produce electric signal, the position of the electric signal instruction equipment operating mechanism, so as to sensor device operating mechanism point
The particular location of combined floodgate.
Preferably, the equipment operation mechanism includes switch and disconnecting link, and change in location sensing device further is arranged on switch or knife
On the mechanism rod of lock.
Preferably, the camera uses high-resolution lens, and strong light light compensating lamp of arranging in pairs or groups, the camera face power transformation
Divide-shut brake of standing is set, and the light compensating lamp is arranged on camera nearby and light directive divide-shut brake physical location, the camera, mends
Light lamp is connected with terminal processing units respectively.
Preferably, the terminal processing units include STM32 chips, and it is carried out to receiving the shooting picture that camera is sent
The process of processing is：(1) shooting picture is compressed, output size is 10kB or so colour picture；(2) will photograph
Picture carries out figure identifying processing, exports two binary codes；4 bit interval code name codes and 3 are added before (3) two binary codes
Binary code code is formed after the position code code name of position.The terminal processing units specifically include STM32L100 single-chip microcomputers, storage
Device, 25M have source crystal oscillator, solar panel, charging control circuit, lithium battery, ON-OFF control circuit and mu balanced circuit.It is described
STM32L100 single-chip microcomputers have source crystal oscillator and mu balanced circuit to be connected with camera, light compensating lamp, memory, 25M respectively, the charging
Control circuit is connected with solar panel and lithium battery respectively, and the lithium battery is respectively with STM32L100 single-chip microcomputers and opening
Control circuit connection is closed, the control terminal of the ON-OFF control circuit is connected with STM32L100 single-chip microcomputers, the mu balanced circuit difference
It is connected with STM32L100 single-chip microcomputers and camera.In addition to the above-mentioned working method taken pictures by sensing system triggering camera,
The present invention can also obtain the instruction of background management system by wired or wireless way, be easy to real time inspection transformer station divide-shut brake
State, in order to save every 10 seconds STM32L100 single-chip microcomputers can be set to wake up once, check whether network state has backstage to manage
System calling is managed, has and is then powered to STM32L100 single-chip microcomputers, into monitoring state, do not instructed, then STM32L100 single-chip microcomputers are again
Into resting state.During work, single-chip microcomputer STM32L100 from low-power consumption mode be switched to normal mode of operation (external wake and
Internal timing wakes up), powered to STM32L100 single-chip microcomputers, be at working condition.STM32L100 single-chip microcomputers are to camera
Wake-up information is sent, camera starts to shoot, and obtains new transformer station's divide-shut brake pictorial information, while image data is stored in
Inside STM32L100 single-chip microcomputers in EEPROM.
Preferably, lossy compression method, detailed process are carried out to shooting picture using the jpeg image compression algorithm based on DCT
For：DCT functions are by being produced data for the mankind by using weighting function by space field transformation to frequency domain, quantizer
The quantization DCT coefficient of vision optimization；Entropy coder minimizes the confusion degree of quantization DCT coefficient.
Preferably, the wired mode includes Ethernet and/or serial bus, and the wireless mode includes GPRS or wifi
Or 3G or 4G networks.The wireless network includes ZIGBEE cordless communication networks, ZIGBEE technology be it is a kind of closely, low complexity
Degree, low-power consumption, low rate, the bidirectional wireless communication technology of low cost.It is mainly used in not high apart from short, low in energy consumption and transmission rate
Various electronic equipments between carry out data transmission and typically have periodic data, intermittent data and low reaction time number
According to the application of transmission.Wireless data transmission function is provided for transformer station's divide-shut brake physical location monitoring using ZIGBEE networks, can
Using high performance technical grade ZIGBEE schemes, there is provided SMT and DIP interfaces, TTL interface equipments can be directly connected to, realize data
Transparent transmission function；Low power dissipation design, lowest power consumption are less than 1mA；6 road I/O are provided, digital quantity input and output, pulse can be achieved
Output；Wherein there are 3 road I/O also to realize the functions such as analog acquisition, step-by-step counting.
Preferably, the background server is handled state picture at field device operation mechanism divide-shut brake.It is described
The process of image recognition processing comprises the following steps：Step 1, picture is pre-processed：What picture was pre-processed is specific
Process is：(1) extract directional diagram, divide the image into first it is sufficiently small give block, secondly to each point profit of each sub-block
Its x direction gradient and y direction gradients are calculated respectively with Sobel operators, and the direction of image is finally worth to according to gradient；(2) figure
As segmentation, by image district and background separation；(3) image enhaucament, by the way that original unsharp image to be apparent from or emphasize certain
A little features interested, the difference in expanded view picture between different objects feature, and suppress uninterested feature, to strengthen
Useful information in image；(4) two-value and refinement, the gray value of the pixel on image is arranged to 0 or 255, and sets one
Individual threshold value T, the data of image are divided into the pixel group more than T and pixel group two parts less than T with threshold value T；Step 2, feature
Extraction：It can fully represent that the feature of the image uniqueness is expressed with the form of numerical value；Step 3, image classification：By image
It is assigned in different image libraries, and substation equipment division physical location information is provided by classification results.
Further, associative operation is carried out according to Monitoring Data, according to program progress order if classification results are effective
Operation, judges whether to continue to operate after needing manual confirmation, if necessary to after manual confirmation continue if classification results are invalid
Operation then according to program carry out order operation, otherwise terminates operation.
Present invention also offers a kind of substation equipment division physical location monitoring method, it comprises the following steps：
Monitoring device operating mechanism acts, and enters if change in location sensing device further monitors the movement of equipment operation mechanism
In next step, the action of monitoring device operating mechanism is otherwise continued；
Camera is waken up, change in location sensing device further is believed to terminal processing units sending action after equipment operation mechanism action
Breath, terminal processing units wake up camera and send photographing command to camera；
Picture is shot, camera is taken pictures to equipment operation mechanism and shooting picture is sent into terminal processing units；
Compression of images, terminal processing units pass through data to receiving after the shooting picture that camera is sent is compressed processing
Centralised arrangement is sent to background server；
Image recognition processing, background server to shooting picture to carrying out image recognition processing, described image identifying processing
Process comprise the following steps：Step 1, picture is pre-processed：The detailed process pre-processed to picture is：(1) carry
Take directional diagram, divide the image into first it is sufficiently small give block, Sobel operators minute secondly are utilized to each point of each sub-block
Its x direction gradient and y direction gradients are not calculated, and the direction of image is finally worth to according to gradient；(2) image is split, by image
Area and background separation；(3) image enhaucament, by being apparent from or emphasizing some spies interested by original unsharp image
Levy, the difference in expanded view picture between different objects feature, and suppress uninterested feature, it is useful in image to strengthen
Information；(4) two-value and refinement, the gray value of the pixel on image is arranged to 0 or 255, and sets a threshold value T, use threshold
The data of image are divided into the pixel group more than T and pixel group two parts less than T by value T；Step 2, feature extraction：Can be abundant
Represent that the feature of the image uniqueness is expressed with the form of numerical value；Step 3, image classification：Image is assigned to different
In image library, and substation equipment division physical location information is provided by classification results；
Associative operation is carried out according to Monitoring Data, according to program carry out order operation if classification results are effective, if
Classification results are invalid, judge whether to continue to operate after needing manual confirmation, if necessary to continue operation then basis after manual confirmation
Program carry out order operation, otherwise terminate operation.
The beneficial effects of the invention are as follows：
State picture at field device operation mechanism divide-shut brake is passed through data by the present invention by front-end image harvester
Centralised arrangement is sent to background server, and background server is handled state picture at field device operation mechanism divide-shut brake
The actual division physical location of equipment in sequence operation is judged afterwards, it is actual during substation sequence control operation equipment in can effectively solving to divide
The problem of combined floodgate physical location monitoring, substation sequence control operation practicality and promotion prospect are greatly improved, improves power transformation
Station automatic level monitoring, directly perceived, correctly display substation equipment reality state, so as to reduce operation maintenance personnel daily
In operation must stay-at-home the problem of checking equipment state at any time at the scene, reduce worker workload, improve the degree of accuracy,
Substation sequence control operation under complex environment remains to reliably perform.
The present invention can avoid powered conjunction by mistake by effectively and timely being monitored to substation equipment division physical location
The situation of the pernicious misoperation fault of divide-shut brake occurs, and protects the life security of transformer station's operation maintenance personnel.In addition the present apparatus can
Multiple spot is installed in a distributed manner, carries out wireless collection data, to reduce construction and wiring cost, saves a large amount of manpower and materials wealth
Power.
Brief description of the drawings
Fig. 1 is the structural representation of system of the present invention；
Fig. 2 is equipment scheme of installation of the present invention；
Fig. 3 is the structure chart of this hair front-end image harvester；
Fig. 4 is background server to divide-shut brake pictorial information process chart；
Fig. 5 is order operation division position monitoring device workflow diagram；
Fig. 6 is front-end image harvester program circuit；
Fig. 7 is picture compression coding flow chart.
Embodiment
Describe the embodiment of the present invention in detail below in conjunction with accompanying drawing, following disclosure provides many different realities
The device and method that example is used for realizing the present invention is applied, those skilled in the art is more clearly understood that how to realize the present invention.
In order to simplify disclosure of the invention, hereinafter the part and setting of specific examples are described.In addition, the present invention can be not
With repeat reference numerals in example or letter.This repetition is for purposes of simplicity and clarity, itself not indicate to be discussed
Relation between various embodiments or setting.It should be noted that part illustrated in the accompanying drawings is not drawn necessarily to scale.This hair
It is bright to eliminate the description to known assemblies and treatment technology and process to avoid being unnecessarily limiting the present invention.It should be appreciated that to the greatest extent
The pipe present invention describes its preferred embodiment, but these are elaborations to embodiment, rather than limitation is originally
The scope of invention.
As depicted in figs. 1 and 2, a kind of substation equipment division physical location monitoring device provided by the invention, it includes
Front-end image harvester, data centralised arrangement and the background server being oppositely arranged with substation equipment, front-end image collection
Device is arranged on equipment operation mechanism nearby and is connected by ZIGBEE wireless networks with data centralised arrangement, and field apparatus is grasped
Make state picture at mechanism divide-shut brake and be sent to data centralised arrangement, after the data centralised arrangement is connected to by wired mode
Platform server (as shown in Figure 1) is wirelessly connected to background server (as shown in Figure 2), and the scene received is set
State picture is transmitted to background server at standby operating mechanism divide-shut brake, and the background server is to field device operation mechanism point
State picture judges the actual division physical location of equipment in sequence operation at combined floodgate after being handled.The background server can
With the nearby location in transformer station, long-range power system monitor center can be also arranged on.
The front-end image harvester includes change in location sensing device further, camera, terminal processing units and channel radio
Believe module, the change in location sensing device further is arranged in equipment operation mechanism, to sensor device operating mechanism action message
And it is sent to terminal processing units；The camera face switch or disconnecting link mechanical location, to according to terminal processing units
Photographing command is taken pictures to equipment operation mechanism and shooting picture is sent into terminal processing units；The terminal processing units
Carry out the equipment operation mechanism action information sent of change in location sensing device further to receive and send photographing command to camera
Or the photographing instruction for sending host computer is transmitted to camera, lead to receiving after the shooting picture sent of camera is handled
Cross wireless communication module and be sent to data centralised arrangement.As shown in figure 3, front-end image harvester is by overleaf adhering to strength
3M glue is fixed and is take pictures camera face switch or disconnecting link mechanical location.Front-end image harvester also sets up being and not being
The wireless antenna of line communication module connection, to carry out gain (amplification) processing to the signal for receiving or sending.In the present invention
Camera use high-resolution lens, and strong light light compensating lamp of arranging in pairs or groups, the camera face transformer station divide-shut brake is set, described
Light compensating lamp be arranged on camera nearby and light directive divide-shut brake physical location, the camera, light compensating lamp respectively with end
Reason unit is connected.
The change in location sensing device further is using the sensor for being capable of sensor device operating mechanism position, in equipment operation machine
Magnetic inductive block is provided with structure, magnetic inductive block can move as equipment operation mechanism is mobile, and sensor includes magnet arrangement and Hall
Effect sensing part, Hall effect sensing part are used for the position of equipment operation mechanism；When the magnetic inductive block is with equipment operation
When mechanism moves, magnetic field caused by the magnet arrangement changes, and the Hall effect sensing part is with the change in magnetic field
And electric signal is produced, the position of the electric signal instruction equipment operating mechanism, so as to the tool of sensor device operating mechanism divide-shut brake
Body position.Wherein, the equipment operation mechanism includes switch and disconnecting link, and magnetic inductive block is arranged on the mechanism rod of switch or disconnecting link
On.
Preferably, the terminal processing units include STM32 chips, and it is carried out to receiving the shooting picture that camera is sent
The process of processing is：(1) shooting picture is compressed, output size is 10kB or so colour picture；(2) will photograph
Picture carries out figure identifying processing, exports two binary codes；4 bit interval code name codes and 3 are added before (3) two binary codes
Binary code code is formed after the position code code name of position.The terminal processing units specifically include STM32L100 single-chip microcomputers, storage
Device, 25M have source crystal oscillator, solar panel, charging control circuit, lithium battery, ON-OFF control circuit and mu balanced circuit.It is described
STM32L100 single-chip microcomputers have source crystal oscillator and mu balanced circuit to be connected with camera, light compensating lamp, memory, 25M respectively, the charging
Control circuit is connected with solar panel and lithium battery respectively, and the lithium battery is respectively with STM32L100 single-chip microcomputers and opening
Control circuit connection is closed, the control terminal of the ON-OFF control circuit is connected with STM32L100 single-chip microcomputers, the mu balanced circuit difference
It is connected with STM32L100 single-chip microcomputers and camera.In addition to the above-mentioned working method taken pictures by sensing system triggering camera,
The present invention can also obtain the instruction of background management system by wired or wireless way, be easy to real time inspection transformer station divide-shut brake
State, in order to save every 10 seconds STM32L100 single-chip microcomputers can be set to wake up once, check whether network state has backstage to manage
System calling is managed, has and is then powered to STM32L100 single-chip microcomputers, into monitoring state, do not instructed, then STM32L100 single-chip microcomputers are again
Into resting state.During work, single-chip microcomputer STM32L100 from low-power consumption mode be switched to normal mode of operation (external wake and
Internal timing wakes up), powered to STM32L100 single-chip microcomputers, be at working condition.STM32L100 single-chip microcomputers are to camera
Wake-up information is sent, camera starts to shoot, and obtains new transformer station's divide-shut brake pictorial information, while image data is stored in
Inside STM32L100 single-chip microcomputers in EEPROM.
The present invention carries out lossy compression method using the jpeg image compression algorithm based on DCT to shooting picture, and detailed process is：
DCT functions are by being regarded data for the mankind to produce by using weighting function by space field transformation to frequency domain, quantizer
Feel the quantization DCT coefficient of optimization；Entropy coder minimizes the confusion degree of quantization DCT coefficient.
Wired mode of the present invention includes Ethernet and/or serial bus, the wireless mode include GPRS or
Wifi or 3G or 4G networks.The wireless network includes ZIGBEE cordless communication networks, ZIGBEE technology be it is a kind of closely, it is low
Complexity, low-power consumption, low rate, the bidirectional wireless communication technology of low cost.It is mainly used in apart from short, low in energy consumption and transmission rate
When carrying out data transmission between not high various electronic equipments and typically having periodic data, intermittent data and low reaction
Between data transfer application.Using ZIGBEE networks wireless data transmission work(is provided for transformer station's divide-shut brake physical location monitoring
Can, high performance technical grade ZIGBEE schemes can be used, there is provided SMT and DIP interfaces, TTL interface equipments can be directly connected to, realized
Data transparent transmission function；Low power dissipation design, lowest power consumption are less than 1mA；6 road I/O are provided, achievable digital quantity input and output,
Pulse exports；Wherein there are 3 road I/O also to realize the functions such as analog acquisition, step-by-step counting.
The background server is handled state picture at field device operation mechanism divide-shut brake.As shown in figure 4, institute
The process for stating image recognition processing comprises the following steps：Step 1, picture is pre-processed：The tool pre-processed to picture
Body process is：(1) extract directional diagram, divide the image into first it is sufficiently small give block, secondly to each point of each sub-block
Its x direction gradient and y direction gradients are calculated respectively using Sobel operators, and the direction of image is finally worth to according to gradient；(2)
Image is split, by image district and background separation；(3) image enhaucament, by the way that original unsharp image to be apparent from or emphasize
Some features interested, the difference in expanded view picture between different objects feature, and suppress uninterested feature, to increase
Useful information in strong image；(4) two-value and refinement, the gray value of the pixel on image is arranged to 0 or 255, and set
One threshold value T, the data of image are divided into the pixel group more than T and pixel group two parts less than T with threshold value T；Step 2, spy
Sign extraction：It can fully represent that the feature of the image uniqueness is expressed with the form of numerical value；Step 3, image classification：Will figure
Substation equipment division physical location information is provided as being assigned in different image libraries, and by classification results.
Further, associative operation is carried out according to Monitoring Data, according to program progress order if classification results are effective
Operation, judges whether to continue to operate after needing manual confirmation, if necessary to after manual confirmation continue if classification results are invalid
Operation then according to program carry out order operation, otherwise terminates operation.
As shown in figure 5, present invention also offers a kind of substation equipment division physical location monitoring method, it includes following
Step：
Monitoring device operating mechanism acts, and enters if change in location sensing device further monitors the movement of equipment operation mechanism
In next step, the action of monitoring device operating mechanism is otherwise continued；
Camera is waken up, change in location sensing device further is believed to terminal processing units sending action after equipment operation mechanism action
Breath, terminal processing units wake up camera and send photographing command to camera；
Picture is shot, camera is taken pictures to equipment operation mechanism and shooting picture is sent into terminal processing units；
Compression of images, terminal processing units pass through data to receiving after the shooting picture that camera is sent is compressed processing
Centralised arrangement is sent to background server；
Image recognition processing, background server to shooting picture to carrying out image recognition processing, described image identifying processing
Process comprise the following steps：Step 1, picture is pre-processed：The detailed process pre-processed to picture is：(1) carry
Take directional diagram, divide the image into first it is sufficiently small give block, Sobel operators minute secondly are utilized to each point of each sub-block
Its x direction gradient and y direction gradients are not calculated, and the direction of image is finally worth to according to gradient；(2) image is split, by image
Area and background separation；(3) image enhaucament, by being apparent from or emphasizing some spies interested by original unsharp image
Levy, the difference in expanded view picture between different objects feature, and suppress uninterested feature, it is useful in image to strengthen
Information；(4) two-value and refinement, the gray value of the pixel on image is arranged to 0 or 255, and sets a threshold value T, use threshold
The data of image are divided into the pixel group more than T and pixel group two parts less than T by value T；Step 2, feature extraction：Can be abundant
Represent that the feature of the image uniqueness is expressed with the form of numerical value；Step 3, image classification：Image is assigned to different
In image library, and substation equipment division physical location information is provided by classification results；
Associative operation is carried out according to Monitoring Data, according to program carry out order operation if classification results are effective, if
Classification results are invalid, judge whether to continue to operate after needing manual confirmation, if necessary to continue operation then basis after manual confirmation
Program carry out order operation, otherwise terminate operation.
As shown in fig. 6, front-end image harvester all parts carry out operation operation according to set flow, carry out first
Electric self-test, this is the routine of the self-examination that system is carried out after microcomputer switches on power, and checks front-end image collection dress
Put the quality of middle hardware device.It is responsible for complete to CPU, mainboard, internal memory, soft or hard disc subsystem, display subsystem (including display
Caching), the detection of serial-parallel interface, keyboard etc..If required hardware is found and finds suitably to work, microcomputer
Start to start.If hardware is not found or is found, work is abnormal, according to the property of problem, basic output input system
System sends an error message, can be the text or a series of special buzzer shown in fluorescent screen.It can enter in next step
Row photographing operation, the take pictures triggering of action of camera are controlled by change in location sensing device further, above-mentioned change in location sensing dress
Put and be arranged in equipment operation mechanism, to sensor device operating mechanism action message and be sent to terminal processing units, it is described
Camera face switchs or disconnecting link mechanical location, and equipment operation mechanism is carried out to the photographing command according to terminal processing units
Take pictures and shooting picture is sent to terminal processing units, the terminal processing units carry out change in location sensing dress to receive
Put the equipment operation mechanism action information sent and send photographing command or the photographing instruction for sending host computer to camera
Camera is transmitted to, camera is completed to take pictures to transformer station's divide-shut brake physical location.
Preferably, affiliated camera is connected with 24M using 2,000,000 serial OV2643 pixel camera heads, the camera
There is source crystal oscillator.The memory uses AT89S52-24AU ATMEL storage chips.
Terminal processing units in front-end image harvester are handled receiving the shooting picture that camera is sent, profit
With STM32L100 single-chip microcomputers processing picture process be：(1) shooting picture is compressed, output size is 10kB's or so
Colour picture；(2) picture photographed is subjected to figure identifying processing, exports two binary codes (00：It is invalid；01：Divide position；
10：Close position；11：Mistake, it can not recognize)；4 bit interval code name codes and 3 position code code names are added before (3) two binary codes
Composition binary code code such as 001, which is spaced apart, afterwards closes position, and exportable 0,001 001 10.Jpeg image compression based on DCT is calculated
Method is a kind of compression method, and applies to obtain most commonly used jpeg image compress technique.
A kind of picture compression Processing Example is given below, as shown in fig. 7, substantially step is：First, divide-shut brake picture
It is divided into some 8 × 8 block of pixels, afterwards according to from left to right, scanning sequency from top to bottom is ranked up.Use DCT functions
These 8 × 8 block of pixels are calculated, scalar quantization then are carried out with uniform quantization table to this 64 DCT coefficients again, uniformly
Quantization table show that this uniform quantization table can be used as Joint Photographic Experts Group according to transformer station's operation maintenance personnel vision valve experimental result
A part, but it is not necessary to；After DCT coefficient is quantified, the scanning side of Z sequences is used the coefficient in each block of pixels
Formula is scanned sequence, and obtained data flow is generated into middle symbol sebolic addressing with row sequential encoding, finally encoded with Huffman
These symbols are carried out with processing coding to be used to store or transmit.This image data condensing routine, visual c++ can be used
6.0 platform programming realizations.The engineering of foundation is JpegCompression, is realized based on MFC class libraries.Obtain the picture number of compression
According to rear, this information data is sent to data centralised arrangement by wireless communication module.
Data centralised arrangement can be stored, managed, backup divide-shut brake physical location picture information, and these information are concentrated and sent out
Send and backup in the database in background server managing device, be managed collectively, when background server needs to inquire about or adjusts
Restore the data of storage only need to send request by wired or wireless way to data centralised arrangement, and staff enters after receiving data
Row associative operation.
In addition, the application of the present invention is not limited to technique, mechanism, the system of the specific embodiment described in specification
Make, material composition, means, method and step., will be easy as one of ordinary skill in the art from the disclosure
Ground understands, for current technique that is existing or will developing later, mechanism, manufacture, material composition, means, method or
Step, the knot that wherein they perform the function being substantially the same with the corresponding embodiment of the invention described or acquisition is substantially the same
Fruit, they can be applied according to the present invention.Therefore, appended claims of the present invention are intended to these techniques, mechanism, system
Make, material composition, means, method or step are included in its protection domain.
Claims (10)
1. a kind of substation equipment division physical location monitoring device, it is characterized in that, including be oppositely arranged with substation equipment
Front-end image harvester, data centralised arrangement and background server, front-end image harvester are arranged on equipment operation mechanism
It is connected nearby and with data centralised arrangement by wireless network, state picture at field device operation mechanism divide-shut brake is sent to
Data centralised arrangement, the data centralised arrangement are connected to background server by wired or wireless way, showed what is received
State picture is transmitted to background server at field device operating mechanism divide-shut brake, and the background server is to field device operation machine
State picture judges the actual division physical location of equipment in sequence operation at structure divide-shut brake after being handled.
2. a kind of substation equipment division physical location monitoring device according to claim 1, it is characterized in that, the front end
Image collecting device includes change in location sensing device further, camera, terminal processing units and wireless communication module, and the position becomes
Change sensing device further to be arranged in equipment operation mechanism, to sensor device operating mechanism action message and be sent to terminal processes list
Member；Camera face switch or disconnecting link mechanical location, to according to the photographing command of terminal processing units to equipment operation
Mechanism is taken pictures and shooting picture is sent into terminal processing units；The terminal processing units carry out position change to receive
Change the equipment operation mechanism action information that sensing device further is sent and sent to camera transmission photographing command or by host computer
Photographing instruction is transmitted to camera, and the shooting picture sent to receiving camera is sent after handling by wireless communication module
Give data centralised arrangement.
3. a kind of substation equipment division physical location monitoring device according to claim 2, it is characterized in that, the position
Changing sensing device further includes being used for the sensor of sensor device operating mechanism position, and magnetic conduction is provided with equipment operation mechanism
Block, magnetic inductive block can move as equipment operation mechanism is mobile, and sensor includes magnet arrangement and Hall effect sensing part, suddenly
Your effect sensing part is used for the position of equipment operation mechanism；It is described when the magnetic inductive block moves with equipment operation mechanism
Magnetic field changes caused by magnet arrangement, and the Hall effect sensing part produces electric signal with the change in magnetic field, institute
The position of electric signal instruction equipment operating mechanism is stated, so as to the particular location of sensor device operating mechanism divide-shut brake.
4. a kind of substation equipment division physical location monitoring device according to claim 3, it is characterized in that, the equipment
Operating mechanism includes switch and disconnecting link, and change in location sensing device further is arranged on the mechanism rod of switch or disconnecting link.
5. a kind of substation equipment division physical location monitoring device according to claim 2, it is characterized in that, the terminal
Processing unit includes STM32 chips, and it is to receiving the process that the shooting picture that camera is sent is handled：(1) to shooting
Picture is compressed, and output size is 10kB or so colour picture；(2) picture photographed is subjected to figure identifying processing,
Export two binary codes；Two are formed after adding 4 bit interval code name codes and 3 position code code names before (3) two binary codes
Ary codes code.
6. a kind of substation equipment division physical location monitoring device according to claim 5, it is characterized in that, using based on
DCT jpeg image compression algorithm carries out lossy compression method to shooting picture, and detailed process is：DCT functions by data by sky
Between domain transform to frequency domain, quantizer produces the quantization DCT coefficient optimized for human vision by using weighting function；Entropy
Encoder minimizes the confusion degree of quantization DCT coefficient.
7. a kind of substation equipment division physical location monitoring device according to claim 1, it is characterized in that, it is described wireless
Network includes ZIGBEE cordless communication networks, and the wired mode is wired including Ethernet and/or serial bus, the wireless parties
Formula includes GPRS or wifi or 3G or 4G networks.
8. a kind of substation equipment division physical location monitoring device according to claim 1, it is characterized in that, the data
Centralised arrangement is arranged on substation equipment scene.
9. a kind of substation equipment division physical location monitoring device according to claim 6, it is characterized in that, the backstage
The process that server is handled state picture at field device operation mechanism divide-shut brake comprises the following steps：
Step 1, picture is pre-processed：The detailed process pre-processed to picture is：(1) directional diagram is extracted, first will
Image be divided into it is sufficiently small give block, it is terraced secondly to calculate its x direction respectively using Sobel operators to each point of each sub-block
Degree and y direction gradients, the direction of image is finally worth to according to gradient；(2) image is split, by image district and background separation；(3)
Image enhaucament, it is different in expanded view picture by being apparent from or emphasizing some features interested by original unsharp image
Difference between object features, and suppress uninterested feature, to strengthen the useful information in image；(4) two-value and thin
Change, the gray value of the pixel on image is arranged to 0 or 255, and set a threshold value T, divided the data of image with threshold value T
Pixel group two parts into the pixel group more than T and less than T；
Step 2, feature extraction：It can fully represent that the feature of the image uniqueness is expressed with the form of numerical value；
Step 3, image classification：Image is assigned in different image libraries, and substation equipment point is provided by classification results
Close physical location information.
10. a kind of substation equipment division physical location monitoring method, it is characterized in that, comprise the following steps：
Monitoring device operating mechanism acts, and enters if change in location sensing device further monitors the movement of equipment operation mechanism next
Step, otherwise continue the action of monitoring device operating mechanism；
Wake up camera, after equipment operation mechanism action change in location sensing device further to terminal processing units sending action information,
Terminal processing units wake up camera and send photographing command to camera；
Picture is shot, camera is taken pictures to equipment operation mechanism and shooting picture is sent into terminal processing units；
Compression of images, terminal processing units are compressed after processing by data set to receiving the shooting picture that camera is sent
Device is sent to background server；
Image recognition processing, background server to shooting picture to carrying out image recognition processing, the mistake of described image identifying processing
Journey comprises the following steps：Step 1, picture is pre-processed：The detailed process pre-processed to picture is：(1) extraction side
Xiang Tu, divide the image into first it is sufficiently small give block, secondly each point of each sub-block is counted respectively using Sobel operators
Its x direction gradient and y direction gradients are calculated, the direction of image is finally worth to according to gradient；(2) image split, by image district with
Background separation；(3) image enhaucament, by being apparent from or emphasizing some features interested by original unsharp image, expand
Difference in big image between different objects feature, and suppress uninterested feature, to strengthen the useful information in image；
(4) two-value and refinement, the gray value of the pixel on image is arranged to 0 or 255, and sets a threshold value T, will with threshold value T
The data of image are divided into the pixel group more than T and pixel group two parts less than T；Step 2, feature extraction：Can fully it represent
The feature of the image uniqueness is expressed with the form of numerical value；Step 3, image classification：Image is assigned to different images
In storehouse, and substation equipment division physical location information is provided by classification results；
Associative operation is carried out according to Monitoring Data, according to program carry out order operation if classification results are effective, if classification
As a result it is invalid, judge whether to continue to operate after needing manual confirmation, if necessary to continue operation after manual confirmation then according to program
Carry out order operation, otherwise terminate operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636718.3A CN107657601A (en) | 2017-07-28 | 2017-07-28 | A kind of substation equipment division physical location monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710636718.3A CN107657601A (en) | 2017-07-28 | 2017-07-28 | A kind of substation equipment division physical location monitoring device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107657601A true CN107657601A (en) | 2018-02-02 |
Family
ID=61128204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710636718.3A Pending CN107657601A (en) | 2017-07-28 | 2017-07-28 | A kind of substation equipment division physical location monitoring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107657601A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586240A (en) * | 2018-12-11 | 2019-04-05 | 山东广域科技有限责任公司 | A kind of substation's disconnecting link monitoring device |
| CN112510552A (en) * | 2020-10-30 | 2021-03-16 | 国网山东省电力公司济宁供电公司 | Transformer substation electrical equipment abnormality detection method and system based on image recognition |
| CN112564272A (en) * | 2020-10-22 | 2021-03-26 | 国网浙江省电力有限公司嘉兴供电公司 | Transformer substation health control method integrating multidimensional monitoring and fault information |
| CN113890975A (en) * | 2021-09-26 | 2022-01-04 | 贵州电网有限责任公司 | GIS totally closed combined electrical apparatus isolator position state recognition device |
| CN115567655A (en) * | 2022-09-16 | 2023-01-03 | 广西电网有限责任公司南宁供电局 | Circuit breaker mechanism image acquisition system |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893686A (en) * | 2010-06-11 | 2010-11-24 | 河南电力试验研究院 | Digital radiography-based breaker operating characteristic on-line detection device and method |
| CN102289676A (en) * | 2011-07-30 | 2011-12-21 | 山东鲁能智能技术有限公司 | Method for identifying mode of switch of substation based on infrared detection |
| CN102915432A (en) * | 2012-09-11 | 2013-02-06 | 北京铁道工程机电技术研究所有限公司 | Method and device for extracting vehicle-bone microcomputer image video data |
| CN103528617A (en) * | 2013-09-27 | 2014-01-22 | 中国人民解放军空军工程大学 | Cockpit instrument automatic recognizing and detecting method and device |
| 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 |
| CN105047450A (en) * | 2015-08-31 | 2015-11-11 | 中国西电电气股份有限公司 | High-voltage switch position indication interlocking system and method based on image recognition technology |
| WO2016079833A1 (en) * | 2014-11-19 | 2016-05-26 | 富士通株式会社 | Abnormality detection device, abnormality detection method, and abnormality detection program |
| CN206271580U (en) * | 2016-09-05 | 2017-06-20 | 南京大全自动化科技有限公司 | A kind of switch based on image recognition position |
| CN106885987A (en) * | 2017-04-13 | 2017-06-23 | 国网宁夏电力公司吴忠供电公司 | A kind of high voltage isolator on-line monitoring system based on modal analysis method |
-
2017
- 2017-07-28 CN CN201710636718.3A patent/CN107657601A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101893686A (en) * | 2010-06-11 | 2010-11-24 | 河南电力试验研究院 | Digital radiography-based breaker operating characteristic on-line detection device and method |
| CN102289676A (en) * | 2011-07-30 | 2011-12-21 | 山东鲁能智能技术有限公司 | Method for identifying mode of switch of substation based on infrared detection |
| CN102915432A (en) * | 2012-09-11 | 2013-02-06 | 北京铁道工程机电技术研究所有限公司 | Method and device for extracting vehicle-bone microcomputer image video data |
| CN103528617A (en) * | 2013-09-27 | 2014-01-22 | 中国人民解放军空军工程大学 | Cockpit instrument automatic recognizing and detecting method and device |
| 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 |
| WO2016079833A1 (en) * | 2014-11-19 | 2016-05-26 | 富士通株式会社 | Abnormality detection device, abnormality detection method, and abnormality detection program |
| CN105047450A (en) * | 2015-08-31 | 2015-11-11 | 中国西电电气股份有限公司 | High-voltage switch position indication interlocking system and method based on image recognition technology |
| CN206271580U (en) * | 2016-09-05 | 2017-06-20 | 南京大全自动化科技有限公司 | A kind of switch based on image recognition position |
| CN106885987A (en) * | 2017-04-13 | 2017-06-23 | 国网宁夏电力公司吴忠供电公司 | A kind of high voltage isolator on-line monitoring system based on modal analysis method |
Non-Patent Citations (5)
| Title |
|---|
| FENGJIE SUN ET AL.: "application of video image recognition technology in substation equipment monitoring", 《2011 INTERNATIONAL CONFERENCE ON ELECTRICAL AND CONTROL ENGINEERING》 * |
| 徐倩等: "《石油机械测试技术》", 31 December 2016, 重庆：重庆大学出版社 * |
| 洪小达: "《多媒体计算机与数据压缩技术》", 30 June 1999 * |
| 邵会勇: "远程数字视频监控系统中开关位置识别的研制", 《中国优秀硕博士学位论文全文数据库（硕士） 信息科学辑》 * |
| 陈勇: "《变电站交流回路智能检验系统设计与实现》", 31 December 2015, 长春：吉林人民出版社 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109586240A (en) * | 2018-12-11 | 2019-04-05 | 山东广域科技有限责任公司 | A kind of substation's disconnecting link monitoring device |
| CN112564272A (en) * | 2020-10-22 | 2021-03-26 | 国网浙江省电力有限公司嘉兴供电公司 | Transformer substation health control method integrating multidimensional monitoring and fault information |
| CN112564272B (en) * | 2020-10-22 | 2022-08-09 | 国网浙江省电力有限公司嘉兴供电公司 | Transformer substation health control method integrating multidimensional monitoring and fault information |
| CN112510552A (en) * | 2020-10-30 | 2021-03-16 | 国网山东省电力公司济宁供电公司 | Transformer substation electrical equipment abnormality detection method and system based on image recognition |
| CN113890975A (en) * | 2021-09-26 | 2022-01-04 | 贵州电网有限责任公司 | GIS totally closed combined electrical apparatus isolator position state recognition device |
| CN113890975B (en) * | 2021-09-26 | 2023-12-01 | 贵州电网有限责任公司 | GIS totally-enclosed combined electrical apparatus isolator position state recognition device |
| CN115567655A (en) * | 2022-09-16 | 2023-01-03 | 广西电网有限责任公司南宁供电局 | Circuit breaker mechanism image acquisition system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107657601A (en) | A kind of substation equipment division physical location monitoring device and method | |
| CN202206189U (en) | Comprehensive monitoring and intelligent management device for electric power high-voltage equipment | |
| CN105388768B (en) | remote circuit control system and method based on cloud platform | |
| CN107147212A (en) | NMS for transformer station | |
| CN106686315A (en) | Intelligent monitoring shooting method and device capable of automatically adjusting image definition | |
| CN110213540A (en) | Line feed terminals control method based on image recognition on-pole switch state acquisition | |
| CN207652137U (en) | Intelligent power distribution terminal and power monitoring system applied to Internet of Things | |
| CN212391799U (en) | Power transmission line video monitoring device and system | |
| CN104183108B (en) | SF6Switch alarm and block signal radio transmitting device | |
| CN104300515A (en) | Live part verification information recognition and intelligent protection device for transformer substation | |
| CN205122516U (en) | Air circuit breaker | |
| CN102209231A (en) | Equipment information output method and system | |
| CN103401315A (en) | Distributed generation Internet of Things control system | |
| CN1889622A (en) | Long-end power supply system | |
| CN110198077A (en) | Distribution terminal control method based on image recognition ring network cabinet state acquisition | |
| CN201440214U (en) | Power grid running monitoring system based on GPRS | |
| CN104539045A (en) | Intelligent fault-analysis-prevention system and working method thereof | |
| CN212784899U (en) | Join in marriage consumer state monitoring devices and system | |
| CN107481499A (en) | The remote data monitoring equipment of hydrogen fuel cell | |
| CN203522336U (en) | Power operation equipment on-line remote display and alarm device | |
| CN103516050A (en) | Information collector of distribution network switching station | |
| CN202183638U (en) | Remote distribution control system based on internet of things | |
| CN207994731U (en) | One kind being used for distribution transformer monitor protective system | |
| CN207731330U (en) | A kind of novel electric power apparatus electronic label intelligent cruising inspection system | |
| CN210780840U (en) | Integrated multifunctional intelligent data acquisition system |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180202 |