CN108873791A - A kind of substation field violation detection early warning system - Google Patents
A kind of substation field violation detection early warning system Download PDFInfo
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
- G05B19/0423—Input/output
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/30—Individual registration on entry or exit not involving the use of a pass
- G07C9/38—Individual registration on entry or exit not involving the use of a pass with central registration
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
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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
- H04N7/181—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a plurality of remote sources
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/25—Pc structure of the system
- G05B2219/25257—Microcontroller
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- Automation & Control Theory (AREA)
- Closed-Circuit Television Systems (AREA)
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Abstract
The invention belongs to converting station electric power monitoring device technical field, especially a kind of substation field detects early warning system in violation of rules and regulations.A kind of substation field violation detection early warning system, which is characterized in that including central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing module 3, gsm module 4, voice alarm module 5, substation's access control equipment 6, system power supply 7.The beneficial effects of the invention are as follows:The present apparatus is low in cost, installation is simple, it is easy to use, and solve key, triviality problem of management, therefore cost performance is very high, eliminating staff, safe wearing cap does not enter live security risk, fills up the blank of substation operation management embedded technology, it solves power transformation operation person on duty and difficult problem is managed to field personnel, achieve good effect.
Description
Technical field
The invention belongs to converting station electric power monitoring device technical field, the detection early warning in violation of rules and regulations of especially a kind of substation field
System.
Background technique
《Safety》5.3.5 clear stipulaties:Anyone enters Workplace, answers correct safe wearing cap, traditional substation
Field operation needs the inspection of person on duty scene to guarantee safety, cannot achieve comprehensive no dead angle control, and field operation has in short-term
The unlawful practice violating the regulations of non-safe wearing cap is not noticeable, and there are field work safe hidden danger.With the swift and violent hair of power industry
The coverage area of exhibition electric power networks expands rapidly, and substation's location distribution is more and more wider.In order to increase economic efficiency and labor
Dynamic productivity largely uses unattended mode in the daily production process of transformer substation system.For prevention, substation is being run
In occur that operation error, fire, equipment is stolen and the burst accidents such as non-working person swarms into, power department is by establishing view
Frequency monitoring system.By smart machines warning messages such as the real time execution image of each monitoring point of affiliated substation and fire-proof and theft-proofs
It is transferred to monitoring center, realizes that the remote real-time video monitoring to affiliated substation, remote failure and fortuitous event alarm receive
Processing.The safety and reliability of substation operation and maintenance are improved with this.But the limitation developed by technology, existing substation
Video monitoring system is only capable of providing the simple functions such as field monitor mostly, virtually reduces the effect of monitoring.
Present image identification technology it is more mature have Iflytek company, IQ Engine schemes general science and technology etc., utilization
There is recognition of face in field, and human testing, conspicuousness extraction etc. is domestic at present without breaking rules and regulations for operation in substation, does not wear
The Activity recognition technology of safety cap, this project is forward-looking, has very big market in substation's violation act of violating regulations identification field.
Existing substation management is clearly stipulate that anyone enters the necessary safe wearing cap in substation production scene, wearing peace
Full cap can protect inherently safe, can implement to manage with gate inhibition in the region for being provided with gate inhibition channel, however, there is operation often
Personnel enter behind scene because of the non-safe wearing cap of a variety of causes, especially the other units personnel such as casual labour, civilian worker, tertiary industry, safety
Consciousness is weak, there is very big security risk.Supervisory control of substation scene, there is now some relevant technologies:
Chinese invention patent 201510709743.0, a kind of offside warning system of substation inspection and alarm method, the applying date:
2015.10.28 disclosing a kind of system of long-range monitor and detection.
Chinese utility model patent 201721250144.8, a kind of offside alarm device violating the regulations of field operation in transformer substation, Shen
It please day:2017.09.27 disclosing a kind of warning device.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of substation fields to detect early warning system in violation of rules and regulations, this
The technical solution of disclosure of the invention is:
A kind of substation field violation detection early warning system, which is characterized in that including central processing unit 1, camera head monitor dress
Set 2, rpyroelectric infrared sensing module 3, gsm module 4, voice alarm module 5, substation's access control equipment 6, system power supply 7;It is described
Central processing unit 1 be electrical connected with the camera head monitor device 2 and receive or export it is corresponding instruction;Described states
Central processing unit 1 and the rpyroelectric infrared sensing module 3 be electrical connected and receive signal, the central processing list
Member 1 is electrical connected with the gsm module 4 and sends signal, the central processing unit 1 and the voice alarm module
5 are electrical connected and send signal, and the gsm module 4 is electrical connected with the voice alarm module 5, the centre
Reason unit 1 is electrical connected with substation's access control equipment 6, the central processing unit 1 and 7 electricity of system power supply
Property be connected.
The central processing unit 1 is stm32f103 and turns FIFO caching reading camera data by parallel port, is passed through
It combines 3 external interrupt of pyroelectric infrared sensor module to trigger after algorithm process, identifies whether field personnel wears peace
Full cap, while substation's access control equipment 6 is controlled, and I/O port directly issues pulse signal control voice alarm module 5 and broadcasts voice,
It is communicated by RS232 interface and gsm module 4, order is made a phone call in transmission.
The camera head monitor device 2 is OV7670 camera, to cooperate the FIFO of the OV7670 camera slow
High speed extraction mode is deposited, is designed using low eight parallel ports PB0-PB7, control terminal selects PA and the part PC I/O port, reduces line number
It is believed that number control signal between interference.
The camera head monitor device 2 is also provided with the liquid crystal display for display, and the liquid crystal display uses PB0-PB7
Low eight parallel ports simultaneously have modularized design.
The step method that the described system work is implemented is:
(1), this early warning system carried out on startup beginning system initialization (IO configure initialization, initialization of (a) serial ports, always at the beginning of
Beginningization, liquid crystal display initialization, interruption initialization etc.);
(2), initialize successfully after self-check of device (self-test OV7670 is normal, self-test pyroelectric sensor is normal, self-test liquid crystal display
It is normal etc.), self-test is scanned by entering rpyroelectric infrared;
(3), when someone passes through, trigger 3 external interrupt of rpyroelectric infrared sensing module, open camera head monitor device 2 scan,
It acquires image data and carries out image procossing, identify that whether there is or not safe wearing cap and safe wearing caps for analysis successfully with regard to feature extraction
Color-match;
(4)If, non-safe wearing cap just trigger gsm module 4 and make a phone call and notify person on duty, and control substation's access control equipment 6,
If identifying safe wearing cap, opens gate inhibition and allow access into;
(5), if identify it is unsuccessful if adjust threshold values and return to self-check of device.
The beneficial effects of the invention are as follows:The present apparatus is low in cost, and installation is simple, easy to use, and solves key, cumbersome
Property production management problem, be summarized as that cost performance is very high, eliminating staff, safe wearing cap does not enter the security risk at scene,
The blank of power transformation operation embedded technology is filled up, production safety management is improved, solves power transformation operation person on duty to work on the spot people
Member's control difficult problem, further consolidates transformer station operation safety measure.This product cost is not high, can be seamlessly connected substation
Existing cam device, substantially reduces cost.
Detailed description of the invention
Fig. 1 is systems function diagram of the invention
Fig. 2 is system framework figure of the invention
Fig. 3 is power supply design drawing of the invention
Fig. 4 is that camera module of the invention designs
Fig. 5 is LCD MODULE design drawing of the invention
Fig. 6 is the software program structure chart of this system
Fig. 7 is the software flow pattern of this system
Fig. 8 is erosion algorithm flow chart
Fig. 9 is the operation schematic diagram of present system
Systems function diagram of the invention when Figure 10 is in-site installation
Specific embodiment
Embodiment 1:Technical solution of the present invention is described in detail below in conjunction with Fig. 1-Fig. 9.
System of the invention includes including central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing module
3, gsm module 4, voice alarm module 5, substation's access control equipment 6, system power supply 7(As shown in Figure 1), system of the invention can
To be mounted on substation's entrance(Such as Fig. 2;As embodiment 2 also may be mounted at the other desired place in scene).
As depicted in figs. 1 and 2, the present invention includes central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing
Module 3, gsm module 4, voice alarm module 5, substation's access control equipment 6, system power supply 7, camera head monitor device 2 include complete
Color camera and LCD display module, selected full-color camera are OV7670 camera;Camera head monitor device 2 and center
Processing unit 1 is electrical connected and receives or export corresponding instruction, and the output end of full-color camera OV7670 connects central processing
1 input terminal of unit, the LCD display module on the output end connection camera head monitor device 2 of central processing unit 1, therefore camera
Monitoring device 2 is for collection site image information and display image information;Central processing unit 1 and the rpyroelectric infrared pass
Sense module 3 is electrical connected and receives signal, the input of the output end connection central processing unit 1 of rpyroelectric infrared sensing module 3
End, for monitoring, that whether there is or not operating personnels is close;Central processing unit 1 and the gsm module 4 are electrical connected and send signal;
Gsm module 4 includes SIM900A integrated circuit and audio input interface, and the input terminal of gsm module 4 connects central processing unit 1
Output end, and the output end of voice alarm module 5 also connects the input terminal of gsm module 4, therefore gsm module 4 and audio alert mould
Block 5 is electrical connected;Central processing unit 1 and voice alarm module 5 are electrical connected and send signal, and voice alarm module 5 includes
VS1053 integrated circuit and loudspeaker, 5 input terminal of voice alarm module connect 1 output end of central processing unit;Central processing list
Member 1 is electrical connected with substation access control equipment 6, and substation's access control equipment 6 is system existing equipment, receives central processing unit 1
Signal, by 1 access control of central processing unit switch.Central processing unit 1 is electrical connected with system power supply 7, system power supply
7 are electrical connected with each unit/module of electric power support is needed.
As shown in Figure 6 and Figure 7, in using the present invention, rpyroelectric infrared sensing module 3 is in long-term listening state, when
Have operating personnel close to when, rpyroelectric infrared sensing module 3 acts at once, signals to central processing unit 1, central processing list
Member 1 opens camera head monitor device 2 after receiving 3 signal of rpyroelectric infrared sensing module immediately, and camera head monitor device 2 acquires
Image and working environment every terms of information to operating personnel are transferred to the progress image procossing of central processing unit 1, and central processing unit 1 is logical
After the correlation analyses such as excessive erosion algorithm and interative computation, be recognized accurately current work personnel whether safe wearing cap, if just
True safe wearing cap, then issue in opening signal to substation's access control equipment 6, opens substation's entrance, if non-safe wearing cap,
It then issues on door signal to substation's access control equipment 6, closes substation's entrance, while sending audio alert signal to voice reporting
It in alert module 5, and sends and makes a phone call on signal to gsm module 4, put through operations staff's phone progress telegraphone and rehearse.
Central processing unit 1, which can select stm32f103 and turn FIFO caching by parallel port, reads OV7670 camera
Data (320*240) are triggered by 3 external interrupt of algorithm process combination pyroelectric infrared sensor module, recognise that pendant
It wears a safety helmet, while controlling substation's access control equipment 6, and I/O port directly issues pulse signal control voice alarm module 5 and broadcasts
Voice is communicated by RS232 interface and gsm module 4, and order is made a phone call in transmission, as shown in Figure 1.Central processing unit 1 is arranged
Erosion algorithm is used for image procossing, and the implementation steps of the erosion algorithm are as follows:
(1), this system design in by GUI_ReadBit () function read raw image data;
(2), carry out RGBtoHSL () again and be converted into HSL (convenient for image procossing);
(3), with ColorMatch () function realize color-match, search for corrosion centers after matching;
(4), until selected target.
Therefore as shown in figure 8, Fig. 8 is erosion algorithm flow chart, principle analysis:With the structural element of 3x3, scan image is each
A pixel does with operation with the bianry image that structural element is covered with it:If being all 1, the pixel of result images is 1, no
It is then 0.
As a result:So that bianry image is reduced a circle, reduces the selected range of target.
Definition:E = B∩S = { x,y | Sxy∩B}.
Raw image data is read by GUI_ReadBit () function in this system design, then carries out RGBtoHSL () turn
It changes HSL (convenient for image procossing) into, realizes color-match with ColorMatch () function, search for corrosion centers after matching, until
Selected target, i.e., as shown in Fig. 8 erosion algorithm process.
Important component of the system power supply 7 as system needs special design so as to pressure stabilizing and improves anti-interference
Ability;It is illustrated in figure 3 power supply design drawing of the invention, there are three voltage class, 12V/5V/3.3V, therefore electricity for system power supply
Source input is inputted using 12V, and primary power source selects the powerful power module of LM2596-5V, it is ensured that meets system requirements, second level
Power supply uses AMS1117-3.3 linear voltage stabilization, it is ensured that processor power supply ripple is small as far as possible, improves anti-interference ability.System power supply 7
Supply includes central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing module 3, gsm module 4, audio alert mould
Block 5, substation's access control equipment 6 wait electric power required for components or module, also ensure the stabilization of system.
It is illustrated in figure 4 camera module design of the invention, the OV7670 camera of selection is a digital camera,
Digital camera has higher anti-interference, but the disadvantage is that is promoted to the requirement of processor runnability, for this purpose, cooperation OV7670
FIFO caching high speed extracts mode, is designed using low eight parallel ports PB0-PB7, and control terminal selects PA and the part PC I/O port, reduces
Interference between cabling data-signal and control signal, as Fig. 4 designs for camera module.
As shown in figure 5, Fig. 5 is LCD MODULE design drawing of the invention, the camera acquisition of present apparatus optimization design
Data simultaneously show in liquid crystal display in real time, to improve picture display rate, alleviate processor load, design data multiplexed port, i.e.,
Liquid crystal display data port also uses low eight parallel ports PB0-PB7, reduces hardware complexity, it is natural software programming level just more slightly
It is complicated.
It is illustrated in figure 6 the software program structure chart of this system, this software carries out system initialization after starting (IO configuration is just
Beginningization, initialization always, liquid crystal display initialization, interrupts initialization etc. at initialization of (a) serial ports), self-check of device after initialize successfully is (certainly
Examine OV7670 is normal, self-test pyroelectric sensor is normal, self-test liquid crystal display is normal etc.), self-test is by entering rpyroelectric infrared
Scanning triggers external interrupt when someone passes through, and opens camera scanning, and acquisition image data carries out image procossing, is identified as
Function is with regard to feature extraction, and whether there is or not the color-match of safe wearing cap and safe wearing cap for analysis, if non-safe wearing cap just triggers
It makes a phone call and notifies person on duty, and control substation's access control equipment 6, if identifying safe wearing cap, open gate inhibition's permission
Into;Threshold values is adjusted if identification is unsuccessful and returns to self-check of device.
Fig. 7 is the software flow pattern of this system, also work flow diagram of the invention.System after start-up i.e. into
Row system initialization enters self-check of device link after system initialization, and self-check of device enters rpyroelectric infrared scanning, if nobody is logical
It crosses and then enters dormant state, keep rpyroelectric infrared scanning;Camera scan image processing is carried out if detection someone passes through, is known
Not Cheng Gong after carry out feature extraction, extract unsuccessful then regression system initialization, extract and successfully then carry out next step;If not wearing
It wears a safety helmet, then Advise By Wire person on duty and access control, which are closed the door, does not allow access into;The access control if safe wearing cap
Enabling allows access into, it is of course possible to be to wear blue safety cap, be also possible to yellow safety cap, naturally it is also possible to be other colors
Safety cap.
When the system is operating:
It is analyzed in conjunction with substation's operation field objective environment, using central processing unit 1, the camera head monitor dress of substation's setting
Set 2, gsm module 4, the equal hardware of voice alarm module 5 carry out circuit design and PCB design, software program using erosion algorithm and
Stratum's iteration, promote swift nature extract, thus real-time judge field personnel whether safe wearing cap.It is red in conjunction with pyroelectricity
Whether the scanning of outer sensing module 3 simultaneously acquires image analysis using camera head monitor device 2, confirm operating personnel's safe wearing
Cap starts 5 audio alert of voice alarm module if without safe wearing cap, and starting 4 telegraphone of gsm module notice is when value fortune
Administrative staff, automatic video frequency record, eliminates safe hidden trouble, and guarantees operating personnel's safety, improves production safety management;If operating personnel
Safe wearing cap, then the gate inhibition that can open substation's access control equipment 6, which gives, to let pass, and system power supply 7 carries out electricity to each unit
Power is supported.
Practical popularization and application situation of the invention:
This achievement has passed through close beta, and plans mostly to promote and apply in Guangxi Guigang, Guiping, Pingnan County etc..Monitoring system peace
It fills simple, at low cost:To the substation with video monitoring system, 10 minutes i.e. adjustable is completed.This system installation is simple, makes
It can be directly in the existing video monitoring server of substation with the existing video monitoring system seamless connection of substation with convenience
Installation monitoring system, using the existing camera group hardware facility of substation, after obtaining real time video data, using image behavior
Identification technology, realize to enter transformer station personnel monitor in real time, can automatic identification enter Field Force's whether safe wearing
Cap, if non-safe wearing cap, system meeting videograph, automatic speech alarming, Advise By Wire as value operations staff and close power transformation
The gate inhibition that stands does not allow access into.
Embodiment 2:
System of the invention includes including central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing module 3, GSM
Module 4, voice alarm module 5, onsite alarming station 60, system power supply 7.
The present invention can also be used on site(Such as Fig. 9), to detect the behavior at scene, camera head monitor device 2 can pacify
Mounted in a high position to obtain better camera position, onsite alarming station 60 is alarmed for field speech(It is equivalent to instead of implementation
Substation's access control equipment 6 in example 1), warning sound can be issued to cause the attention of Field Force(As shown in Figure 10).Together
The principle of embodiment 1, the supply of system power supply 7 include central processing unit 1, camera head monitor device 2, rpyroelectric infrared sensing mould
Block 3, gsm module 4, voice alarm module 5, electric power required for the equal components in onsite alarming station 60 or module also ensure and are
The stabilization of system.When detecting that Field Force does not have safe wearing cap, onsite alarming station 60 is the sound for issuing warning, so as to complete
At correction;Keep silent if having detected safe wearing cap.
The place that the present invention installs is mainly scene, to detect whether warning on-site personnel wears peace according to the rules
Full cap, as shown in Figure 9.Then the onsite alarming station 60 of system may be mounted at passageway, live high point etc. and be adapted to fit and hold at this time
The place easily heard;Therefore in Fig. 7, when non-safe wearing cap → Advise By Wire person on duty → onsite alarming station 60 issues warning
Sound;Keep silent when wearing blue safety cap → onsite alarming station 60(Be of course also apply to wear yellow safety cap or other
The safety cap of color).
Claims (5)
1. a kind of substation field detects early warning system in violation of rules and regulations, which is characterized in that including central processing unit(1), camera prison
Control device(2), rpyroelectric infrared sensing module(3), gsm module(4), voice alarm module(5), substation's access control equipment(6),
System power supply(7);The central processing unit(1)With the camera head monitor device(2)It is electrical connected and receives or defeated
Corresponding instruction out;The central processing unit stated(1)With the rpyroelectric infrared sensing module(3)It is electrical connected simultaneously
Receive signal, the central processing unit(1)With the gsm module(4)It is electrical connected and sends signal, the center
Processing unit(1)With the voice alarm module(5)It is electrical connected and sends signal, the gsm module(4)With it is described
Voice alarm module(5)It is electrical connected, the central processing unit(1)With substation's access control equipment(6)Electrical phase
Even, the central processing unit(1)With the system power supply(7)It is electrical connected.
2. a kind of substation field according to claim 1 detects early warning system in violation of rules and regulations, which is characterized in that the center
Processing unit(1)Turn FIFO caching reading camera data for stm32f103 and by parallel port, by combining heat after algorithm process
Release electric infrared sensor module(3)External interrupt triggering, identify field personnel whether safe wearing cap, while controlling power transformation
It stands access control equipment(6), and I/O port directly issues pulse signal control voice alarm module(5)Voice is broadcasted, RS232 interface is passed through
And gsm module(4)Order is made a phone call in communication, transmission.
3. a kind of substation field according to claim 1 detects early warning system in violation of rules and regulations, which is characterized in that the camera shooting
Head monitoring device(2)For OV7670 camera, mode is extracted to cooperate the FIFO of the OV7670 camera to cache high speed,
Using the low eight parallel ports design of PB0-PB7, control terminal selects PA and the part PC I/O port, reduces cabling data-signal and control signal
Between interference.
4. a kind of substation field detection early warning system in violation of rules and regulations according to claim 1 or described in 3, which is characterized in that shown
Camera head monitor device(2)It is also provided with the liquid crystal display for display, the liquid crystal display uses low eight parallel ports PB0-PB7
And there is modularized design.
5. a kind of substation field detects early warning system in violation of rules and regulations, which is characterized in that the step method that the system work is implemented
For:
(1), this early warning system carried out on startup beginning system initialization (IO configure initialization, initialization of (a) serial ports, always at the beginning of
Beginningization, liquid crystal display initialization, interruption initialization etc.);
(2), initialize successfully after self-check of device (self-test OV7670 is normal, self-test pyroelectric sensor is normal, self-test liquid crystal display
It is normal etc.), self-test is scanned by entering rpyroelectric infrared;
(3), when someone passes through, trigger rpyroelectric infrared sensing module(3)External interrupt opens camera head monitor device(2)
Scanning, acquisition image data carry out image procossing, identify that analysis is whether there is or not safe wearing cap and wears peace successfully with regard to feature extraction
The color-match of full cap;
(4)If, non-safe wearing cap just trigger gsm module(4)It makes a phone call and notifies person on duty, and control substation's access control equipment
(6)If identifying safe wearing cap, opens gate inhibition and allow access into;
(5), if identify it is unsuccessful if adjust threshold values and return to self-check of device.
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CN110428587A (en) * | 2019-07-19 | 2019-11-08 | 国网安徽省电力有限公司建设分公司 | A kind of engineering site early warning interlock method and system |
CN110707810A (en) * | 2019-09-20 | 2020-01-17 | 云南恒协科技有限公司 | Auxiliary comprehensive monitoring system for transformer substation |
CN110782616A (en) * | 2019-11-15 | 2020-02-11 | 国网安徽省电力有限公司安庆供电公司 | Safety monitoring equipment of power distribution station based on Internet of things |
CN111488817A (en) * | 2020-04-08 | 2020-08-04 | 国网山东省电力公司新泰市供电公司 | Device for preventing non-wearing safety helmet from entering transformer substation |
CN111510685A (en) * | 2020-04-26 | 2020-08-07 | 国电电力大同发电有限责任公司 | Information output method and device based on three-dimensional model |
CN112562153A (en) * | 2020-11-04 | 2021-03-26 | 重庆恢恢信息技术有限公司 | Construction site behavior personnel optimization method based on intelligent cloud platform |
CN112869278A (en) * | 2021-02-24 | 2021-06-01 | 福建雄川科技有限公司 | A safety helmet detecting system for building site |
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