CN108200403A - Wirelessly communicate long-distance monitoring method - Google Patents
Wirelessly communicate long-distance monitoring method Download PDFInfo
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- CN108200403A CN108200403A CN201810094568.2A CN201810094568A CN108200403A CN 108200403 A CN108200403 A CN 108200403A CN 201810094568 A CN201810094568 A CN 201810094568A CN 108200403 A CN108200403 A CN 108200403A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F18/00—Pattern recognition
- G06F18/20—Analysing
- G06F18/22—Matching criteria, e.g. proximity measures
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/10—Image acquisition
- G06V10/12—Details of acquisition arrangements; Constructional details thereof
- G06V10/14—Optical characteristics of the device performing the acquisition or on the illumination arrangements
- G06V10/147—Details of sensors, e.g. sensor lenses
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
- G06V10/00—Arrangements for image or video recognition or understanding
- G06V10/20—Image preprocessing
- G06V10/26—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion
- G06V10/267—Segmentation of patterns in the image field; Cutting or merging of image elements to establish the pattern region, e.g. clustering-based techniques; Detection of occlusion by performing operations on regions, e.g. growing, shrinking or watersheds
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- 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
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
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- Evolutionary Computation (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Evolutionary Biology (AREA)
- Bioinformatics & Computational Biology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- General Engineering & Computer Science (AREA)
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- Life Sciences & Earth Sciences (AREA)
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- General Health & Medical Sciences (AREA)
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- Computer Networks & Wireless Communication (AREA)
- Closed-Circuit Television Systems (AREA)
Abstract
The present invention relates to a kind of wireless communication long-distance monitoring methods, and long-distance monitoring method is carried out wireless communication including providing wireless communication remote monitoring platform.By means of the invention it is possible to the quick judgement to the situation of monitored site is realized under remote operation.
Description
Technical field
The present invention relates to wireless communication field more particularly to a kind of wireless communication long-distance monitoring methods.
Background technology
The field that safety defense monitoring system is related to is very extensive, generally includes：Comprehensive wiring, video monitoring, perimeter alarm, height
Voltage electric grid, emergency alarm, night watching, intercommunication, public broadcasting, meets with more than ten a subsystems such as recording, supervision information at gate inhibition.From near
From the point of view of year, although safety defense monitoring system makes some progress in terms of intelligence, due to various, there are still
The problem of anxious to be modified.
Invention content
To solve the above-mentioned problems, the present invention provides a kind of wireless communication long-distance monitoring methods, and it is remote can be based on user
The number of journey selection, realizes the quick judgement of the electronic type to each situation of site environment, so as within a short period of time
Complete the exploration work of multiple buildings.
The present invention at least has following three important inventive points：
(1) by network control mode, the instant detection convenient for user from distal end realization to live window state；
(2) it is completed by the image processing modules of multiple complete processing to the customization image recognition processing of type of glass, from
And improve the effect and efficiency of type of glass identification；
(3) using the consistency of brightness of image as recognition factor, type identification is carried out to the object that image includes, so as to obtain
Obtained high-precision recognition result.
According to an aspect of the present invention, a kind of window-glass missing long-distance monitoring method is provided, this method includes providing
Window-glass lacks remote monitoring platform to carry out wireless communication long-distance monitoring method, and the window-glass missing remote monitoring is put down
Platform includes：
Mobile communication equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；The movement is led to
It is defeated by the hand-held communication terminal or desktop communication terminal of distal end by bidirectional mobile communication link reception user to believe that equipment is used for
The window number entered；
Information conversion equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；Described information turns
Exchange device is connect with the mobile communication equipment, for receiving the window number, and window number is converted into corresponding to
Holder drive signal；
Ball-type picture pick-up device, is arranged in the wall top of monitored site, for being carried out to image data within the vision
It acquires to export present viewing field image；The ball-type picture pick-up device includes ball-type camera, holder and holder driver, the ball
Formula camera is arranged on the holder；The holder driver is used to that the holder to be driven to carry out multi-direction movement to drive
The ball-type camera carries out multi-direction shooting；The holder driver is connect with described information conversion equipment, for receiving
State holder drive signal, and the holder driven based on the holder drive signal so that the ball-type camera towards with institute
It states window and numbers corresponding window progress image data acquiring；
Image limits equipment, is connect with the ball-type camera, for receiving the present viewing field image, and based on standard
Window pattern is from the present viewing field images match and is partitioned into corresponding image characterizing portion；
User input equipment, for the operation according to user, receive glass surface parameter of consistency that user pre-enters,
Setpoint distance and direction initialization.
Description of the drawings
Embodiment of the present invention is described below with reference to attached drawing, wherein：
Fig. 1 is that the window-glass according to embodiment of the present invention lacks the corresponding monitored site of remote monitoring platform
Appearance schematic diagram.
Specific embodiment
Embodiment of the present invention is described in detail below with reference to accompanying drawings.
Window refers to the hole built on wall or roof on architecture, get in light or air.It is true
The original idea at upper window and family respectively refers to window and door, and the window of current universal significance then singly refers to window.Modern window by window frame, glass and
Movable part (hinge, handle, pulley etc.) three parts form.Window frame is responsible for supporting the main structure of forms, can be timber, gold
Belong to, ceramics or plastics material, transparent part is attached on window frame, can be paper, cloth, silk or glass material.Movable part master
It is mainly made of metal materials, may also be wrapped up with heat-insulating materials such as plastics in the place that human hand touches.
Glass is that window protects from the wind and rain or even the main body of sunshading and heat-insulating, for interior of building environment, once in the presence of
Some window occur one or more glass missing situation, the influence for interior of building environment be it is huge, therefore,
It needs quickly to judge the glass deletion condition of window each in building, however, being all by artificial in the prior art
Macroscopic mode lacks quick electronics judgment mechanism, causes judging efficiency low, can not batch operation.
In order to overcome above-mentioned deficiency, the present invention has built a kind of wireless communication long-distance monitoring method, more particularly to one kind
Window-glass lacks long-distance monitoring method, and this method includes providing window-glass missing remote monitoring platform to carry out wireless communication
Long-distance monitoring method, so as to efficiently solve above-mentioned technical problem.
Fig. 1 is that the window-glass according to embodiment of the present invention lacks the corresponding monitored site of remote monitoring platform
Appearance schematic diagram.
Window-glass missing remote monitoring platform according to embodiments of the present invention includes following equipment：
Mobile communication equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；
Wherein, the mobile communication equipment is used to pass through the hand-held logical of distal end by bidirectional mobile communication link reception user
Believe terminal or the window number of desktop communication terminal input.
Then, continue to carry out further the concrete structure of the window-glass missing remote monitoring platform of the present invention
It is bright.
The window-glass missing remote monitoring platform further includes：
Information conversion equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；
Wherein, described information conversion equipment is connect with the mobile communication equipment, for receiving the window number, and will
The window number is converted into corresponding holder drive signal.
The window-glass missing remote monitoring platform further includes：
Ball-type picture pick-up device, is arranged in the wall top of monitored site, for being carried out to image data within the vision
It acquires to export present viewing field image；
Wherein, the ball-type picture pick-up device includes ball-type camera, holder and holder driver, the ball-type camera quilt
It is arranged on the holder；
Wherein, the holder driver is used to that the holder to be driven to carry out multi-direction movement to drive the ball-type camera
Carry out multi-direction shooting；The holder driver is connect with described information conversion equipment, for receiving the holder drive signal,
And the holder is driven so that the ball-type camera is towards corresponding with window number based on the holder drive signal
Window carry out image data acquiring.
The window-glass missing remote monitoring platform further includes：
Image limits equipment, is connect with the ball-type camera, for receiving the present viewing field image, and based on standard
Window pattern is from the present viewing field images match and is partitioned into corresponding image characterizing portion；
User input equipment, for the operation according to user, receive glass surface parameter of consistency that user pre-enters,
Setpoint distance and direction initialization；
First image processing equipment, with described image limit equipment connect, for receiving described image characterizing portion, also with
The user input equipment connection, for receiving the setpoint distance and the direction initialization, holds described image characterizing portion
The processing of row brightness histogram obtains maximum brightness value in described image characterizing portion in each pixel brightness value using as bright
The angle value upper limit also obtains minimum luminance value in described image characterizing portion in each pixel brightness value using as under brightness value
Limit, forms to be limited to the brightness value upper limit under the brightness value as horizontal index and described bright to be limited under the brightness value
The data item table that the angle value upper limit is formed by vertical index, the numerical value of each data item is in the data item table, described
In image characterizing portion, to deviate from pixel of the direction initialization of horizontal direction from brightness value as the horizontal index of the data item
Point reaches the sum that brightness value is less than the pixel pair of setpoint distance for the length of the pixel of the vertical index of the data item；
Second image processing equipment is connect with described first image processing equipment, for determining described image characterizing portion
The often average value of the average value of row pixel pixel value and each column pixel pixel value, based on each row of described image characterizing portion
The row average value of the mean value calculation described image characterizing portion of pixel pixel value, picture is respectively arranged based on described image characterizing portion
The column average value of the mean value calculation described image characterizing portion of vegetarian refreshments pixel value；
Third image processing equipment is connect with second image processing equipment, for being based on described image characterizing portion
The variance of each average value of mean value calculation of each row pixel pixel value is using the row variance as described image characterizing portion, base
In each row pixel pixel value of described image characterizing portion each average value of mean value calculation variance using as described image
The row variance of characterizing portion；
4th image processing equipment, respectively with described first image processing equipment, the second image processing equipment and third figure
As processing equipment connection, for receiving the data item table, the row average value, the column average value, the row variance and institute
Row variance is stated, and based on the data item table, the row average value, the column average value, the row variance and the row variance
Determine the brightness uniformity parameter of described image characterizing portion；
5th image processing equipment is connect respectively with the user input equipment and the 4th image processing equipment, is used
It is matched in by the brightness uniformity parameter of described image characterizing portion with glass surface parameter of consistency, successful match, then
Type of glass signal is exported, it fails to match, then exports other types signal；
Wherein, the 4th image processing equipment be based on the data item table, the row average value, the column average value,
The row variance and the row variance determine that the brightness uniformity coefficient of described image characterizing portion includes：By the row variance
Square with the summed square of the row variance to obtain by except item, for each data item in the data item table, by it
Horizontal index subtracts the row average value to obtain the first multiplication numerical value, its vertical index is subtracted the column average value to obtain
Its numerical value and the first multiplication numerical value and the second multiplication numerical value are multiplied to obtain its product numerical value, by institute by the second multiplication numerical value
State all data item of data item table product numerical value be added to obtain addition numerical value, by the addition numerical value divided by it is described by except
To obtain and export the brightness uniformity parameter of described image characterizing portion；
Wherein, the mobile communication equipment is also connect with the 5th image processing equipment, for receive it is described its
During his type signal, by glass deleted signal and the binding of window number to obtain binding information, and the binding is believed
Breath is sent to the hand-held communication terminal of distal end by bidirectional mobile communication link.
In the window-glass lacks remote monitoring platform：
The user input equipment is touches screen and button operation equipment.
In the window-glass lacks remote monitoring platform：
Described first image processing equipment, second image processing equipment, the third image processing equipment, described
Four image processing equipments and the 5th image processing equipment are integrated in same SOC chip.
In the window-glass lacks remote monitoring platform：
Described image limits equipment and the user input equipment is all disposed in the wall top of monitored site.
In the window-glass lacks remote monitoring platform：
The mobile communication equipment is one kind in GPRS communication interfaces, 3G communication interfaces or 4G communication interfaces.
And in the window-glass lacks remote monitoring platform：
The mobile communication equipment is additionally operable to when receiving the type of glass signal, by glass complete signal and institute
Window number binding is stated to obtain binding information, and the binding information is sent to distal end by bidirectional mobile communication link
Hand-held communication terminal or desktop communication terminal.
In addition, the abbreviation of general packet radio service technology (General Packet Radio Service), it is GSM
A kind of available mobile data services of mobile phone user.GPRS can say be GSM continuity.GPRS is continuously passed with previous in channel
Defeated mode is different, is transmitted, therefore the expense that user is born is with its data transmission list with package (Packet) formula
Position calculates, not using its entire channel, theoretically inexpensively.The transmission rate of GPRS can be promoted to 56 even 114Kbps.
GPRS is often described as " 2.5G ", that is to say, that this technology is located at the second generation (2G) and the third generation (3G) is mobile
Between mechanics of communication.It provides the data transfer of middling speed by using TDMA channels not used in GSM network.GPRS is broken through
GSM nets can only provide the mode of thinking of circuit switching, only by increasing corresponding functional entity and to existing base station system
Part transformation is carried out to realize packet switch, the input of this transformation is comparatively and little, but obtained user data rate
It is considerable.Moreover, because no longer needing the required intermediary's converter of existing wireless application, connection and transmission all can
It is more convenient easy.In this way, user can both connect to the internet, the interactive communications such as video conference are participated in, and in same video signal net
The user of (VRN) on network, it might even be possible to without by dialling up on the telephone, and continue and network connection.
For the communication mode of GPRS packet switches in the communication mode of packet switch, data are divided into the packet of certain length
(grouping), each wrap before there are one packets headers (address mark therein indicates the grouping is sent to where).Data transmit it
Before do not need to allocate in advance channel, establish connection.But when each data packet reaches, the information in datagram header
(such as destination address) finds an available channel resource and sends the datagram temporarily.In this transmission mode, number
According to the side's of sending and receiving cochannel between there is no fixed occupancy relationship, channel resource can be regarded as being total to by all users
Enjoy use.Since data service all shows a kind of paroxysmal business characteristic in most cases, to channel width
Changes in demand is larger, therefore will preferably utilize channel resource using packet mode progress data transmission.Such as one into
The user of row WWW browsings, the most of the time is in browse state, and really the time for data transmission only accounts for very little ratio.
In this case according to the mode of fixed busy channel, it will cause the larger wasting of resources.
Window-glass using the present invention lacks remote monitoring platform, for each window-glass in building in the prior art
The technical issues of deletion condition can not quickly be detected, by building including orienting capture apparatus, targetedly glass detection device
And the corresponding missing detection platform for judging equipment, the electronics for window-glass missing judges and remote monitoring provides solution
Scheme so as to replace artificial mode, improves the efficiency and speed of detection.
It is understood that although the present invention has been disclosed in the preferred embodiments as above, above-described embodiment not to
Limit the present invention.For any those skilled in the art, without departing from the scope of the technical proposal of the invention,
Many possible changes and modifications are all made to technical solution of the present invention using the technology contents of the disclosure above or are revised as
With the equivalent embodiment of variation.Therefore, every content without departing from technical solution of the present invention, technical spirit pair according to the present invention
Any simple modifications, equivalents, and modifications made for any of the above embodiments still fall within the range of technical solution of the present invention protection
It is interior.
Claims (9)
1. a kind of window-glass lacks long-distance monitoring method, this method include providing window-glass missing remote monitoring platform come into
Row wireless communication long-distance monitoring method, the window-glass missing remote monitoring platform include：
Mobile communication equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；
Wherein, the mobile communication equipment is used to receive handheld communication end of the user by distal end by bidirectional mobile communication link
End or the window number of desktop communication terminal input.
2. the method as described in claim 1, which is characterized in that the platform further includes：
Information conversion equipment in the wall top of monitored site, is arranged near ball-type picture pick-up device；
Wherein, described information conversion equipment is connect with the mobile communication equipment, for receiving the window number, and by described in
Window number is converted into corresponding holder drive signal.
3. method as claimed in claim 2, which is characterized in that the platform further includes：
Ball-type picture pick-up device, is arranged in the wall top of monitored site, for being acquired to image data within the vision
To export present viewing field image；
Wherein, the ball-type picture pick-up device includes ball-type camera, holder and holder driver, and the ball-type camera is set
On the holder；
Wherein, the holder driver is used to that the holder to be driven to carry out multi-direction movement so that the ball-type camera to be driven to carry out
Multi-direction shooting；The holder driver is connect with described information conversion equipment, for receiving the holder drive signal, and base
In the holder drive signal drive the holder so that the ball-type camera towards with the corresponding window of window number
Family carries out image data acquiring.
4. method as claimed in claim 3, which is characterized in that the platform further includes：
Image limits equipment, is connect with the ball-type camera, for receiving the present viewing field image, and based on standard window
Pattern is from the present viewing field images match and is partitioned into corresponding image characterizing portion；
User input equipment for the operation according to user, receives glass surface parameter of consistency, setting that user pre-enters
Distance and direction initialization；
First image processing equipment, with described image limit equipment connect, for receiving described image characterizing portion, also with it is described
User input equipment connects, and for receiving the setpoint distance and the direction initialization, described image characterizing portion is performed bright
Histogram treatment is spent, obtains maximum brightness value in described image characterizing portion in each pixel brightness value using as brightness value
The upper limit also obtains minimum luminance value in described image characterizing portion in each pixel brightness value using as brightness value lower limit,
It is formed to be limited to the brightness value upper limit under the brightness value as horizontal index and to be limited to the brightness under the brightness value
The data item table that the value upper limit is formed by vertical index, the numerical value of each data item is in the data item table, in the figure
In picture characterizing portion, to deviate from pixel of the direction initialization of horizontal direction from brightness value as the horizontal index of the data item
Reach the sum that brightness value is less than the pixel pair of setpoint distance for the length of the pixel of the vertical index of the data item；
Second image processing equipment is connect with described first image processing equipment, for determining that described image characterizing portion is often gone
The average value of pixel pixel value and the average value of each column pixel pixel value, based on each row pixel of described image characterizing portion
The row average value of the mean value calculation described image characterizing portion of point pixel value, based on each row pixel of described image characterizing portion
The column average value of the mean value calculation described image characterizing portion of pixel value；
Third image processing equipment is connect with second image processing equipment, for being based on each row of described image characterizing portion
The variance of each average value of mean value calculation of pixel pixel value is using the row variance as described image characterizing portion, based on institute
The variance of each average value of mean value calculation of each row pixel pixel value of image characterizing portion is stated to be limited as described image
Partial row variance；
4th image processing equipment, respectively at described first image processing equipment, the second image processing equipment and third image
Equipment connection is managed, for receiving the data item table, the row average value, the column average value, the row variance and the row
Variance, and determined based on the data item table, the row average value, the column average value, the row variance and the row variance
The brightness uniformity parameter of described image characterizing portion；
5th image processing equipment is connect respectively with the user input equipment and the 4th image processing equipment, for inciting somebody to action
The brightness uniformity parameter of described image characterizing portion is matched with glass surface parameter of consistency, and successful match then exports
Type of glass signal, it fails to match, then exports other types signal；
Wherein, the 4th image processing equipment is based on the data item table, the row average value, the column average value, described
Row variance and the row variance determine that the brightness uniformity coefficient of described image characterizing portion includes：By square of the row variance
With the summed square of the row variance to obtain by except item, for each data item in the data item table, by its level
Index subtracts the row average value to obtain the first multiplication numerical value, its vertical index is subtracted the column average value to obtain second
Its numerical value and the first multiplication numerical value and the second multiplication numerical value are multiplied to obtain its product numerical value, by the number by multiplication numerical value
According to item table all data item product numerical value be added to obtain addition numerical value, by the addition numerical value divided by it is described by except item with
Obtain and export the brightness uniformity parameter of described image characterizing portion；
Wherein, the mobile communication equipment is also connect with the 5th image processing equipment, for receiving other described classes
During type signal, by glass deleted signal and window number binding to obtain binding information, and the binding information is led to
Cross the hand-held communication terminal that bidirectional mobile communication link is sent to distal end.
5. method as claimed in claim 4, it is characterised in that：
The user input equipment is touches screen and button operation equipment.
6. method as claimed in claim 5, it is characterised in that：
Described first image processing equipment, second image processing equipment, the third image processing equipment, the 4th figure
As processing equipment and the 5th image processing equipment are integrated in same SOC chip.
7. method as claimed in claim 6, it is characterised in that：
Described image limits equipment and the user input equipment is all disposed in the wall top of monitored site.
8. the method for claim 7, it is characterised in that：
The mobile communication equipment is one kind in GPRS communication interfaces, 3G communication interfaces or 4G communication interfaces.
9. the method as described in claim 4-8 is any, it is characterised in that：
The mobile communication equipment is additionally operable to when receiving the type of glass signal, by glass complete signal and the window
The binding information is sent to the hand-held of distal end by family number binding to obtain binding information by bidirectional mobile communication link
Communication terminal or desktop communication terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810094568.2A CN108200403A (en) | 2018-01-31 | 2018-01-31 | Wirelessly communicate long-distance monitoring method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810094568.2A CN108200403A (en) | 2018-01-31 | 2018-01-31 | Wirelessly communicate long-distance monitoring method |
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| Publication Number | Publication Date |
|---|---|
| CN108200403A true CN108200403A (en) | 2018-06-22 |
Family
ID=62591429
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810094568.2A Withdrawn CN108200403A (en) | 2018-01-31 | 2018-01-31 | Wirelessly communicate long-distance monitoring method |
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| CN (1) | CN108200403A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110085017A (en) * | 2019-06-05 | 2019-08-02 | 桂林理工大学南宁分校 | A kind of real-time security management system of double Network Communication bimodulus positioning |
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|---|---|---|---|---|
| US20020174367A1 (en) * | 1999-09-01 | 2002-11-21 | Kimmel David E. | Method and apparatus for remotely monitoring a site |
| CN102291535A (en) * | 2011-08-19 | 2011-12-21 | 天津天地伟业数码科技有限公司 | Wireless remote control intelligent ball |
| CN104349127A (en) * | 2013-08-05 | 2015-02-11 | 郑州学生宝电子科技有限公司 | Campus intelligent video monitoring system |
| CN104581074A (en) * | 2015-01-13 | 2015-04-29 | 北京市公安局警卫局 | Photoelectric detection device for detecting opening-closing state of window |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110085017A (en) * | 2019-06-05 | 2019-08-02 | 桂林理工大学南宁分校 | A kind of real-time security management system of double Network Communication bimodulus positioning |
| CN110085017B (en) * | 2019-06-05 | 2024-04-09 | 桂林理工大学南宁分校 | Real-time security management system for dual-network communication dual-mode positioning |
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Application publication date: 20180622 |