CN208224370U - A kind of non-contact prior-warning device of high direct voltage - Google Patents
A kind of non-contact prior-warning device of high direct voltage Download PDFInfo
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- CN208224370U CN208224370U CN201721880871.2U CN201721880871U CN208224370U CN 208224370 U CN208224370 U CN 208224370U CN 201721880871 U CN201721880871 U CN 201721880871U CN 208224370 U CN208224370 U CN 208224370U
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Abstract
The utility model proposes a kind of non-contact prior-warning devices of high direct voltage, comprising: shell, magnet and circuit board, magnet are arranged on the medial surface of outer casing bottom；Controller, wireless communication module and GPS positioning module are provided on circuit board, wireless communication module includes antenna；The controller includes signal acquisition module, signal processing module, signal analysis module and warning module；Prior-warning device is fixed temporarily by magnet absorption and is mounted on big machinery, easy to operate simple.Controller detects DC high-voltage field signal, and when the electric field signal detected is greater than predetermined value, the warning module of controller issues warning signal alarm, and module transmits pre-warning signal to prior-warning device outward by wireless communication, and GPS positioning module can be used for positioning；The utility model proposes prior-warning device can be fixedly mounted on big machinery, to high direct voltage real-time early warning, effectively avoid the generation of man-machine accident.
Description
Technical field
The utility model relates to high direct voltage transmission fields, and in particular to high direct voltage early warning.
Background technique
It is distributed due to China energy place of production and demand very unbalanced, coal resources are concentrated mainly on the Northwest, water
Power resource is largely focused on western part, and the user of mass energy is needed to concentrate on China coast and middle part, this national conditions
The conveying to remote large capacity electric energy is needed, direct current transportation be able to play its advantage.HVDC transmission system has because of it
At a distance, the ability of supplying electric power of large capacity, and have the characteristics that flexible adjustment, power loss is low and obtains the extensive pass of people
Note.
As global maximum 800,000 volts of high pressures of DC transmission engineering put into operation, ± 800KV, more than 2000 kms of overall length,
Single back line conveying capacity reaches 5,000,000 kilowatts, indicates and formally puts into commercial operation, Chinese extra-high voltage remote conveying power technology
It is ripe day by day, but the coherent detection source of early warning of high direct voltage is substantially blank at present at present, current only test equipment
Can not be commercial or the function that scene uses early warning not had by also only resting on the experimental stage, which should can be installed to Operation Van
It is upper or hand-held, early warning is carried out when working truck or handheld device reach risk distance close to high direct voltage route, it is desirable that behaviour
Make simplicity, reliably, the intelligent terminal that developing direction from now on should facilitate installation and use in miniaturization, in addition to exploitation is adapted to greatly
The high direct voltage early warning of development operation personnel's personal protection is also needed intelligently to set outside the high direct voltage prior-warning device of type working truck
It is standby.
A kind of isolated DC high-voltage detecting method and detection circuit are disclosed in 102749501 B of patent document CN, are adopted
With resistor voltage divider circuit, photoelectrical coupler and the signal conditioning circuit composition isolated DC height improved detection signal
Press detection circuit.The utility model can both can guarantee that high and low pressure side was good on the basis of guaranteeing that DC high voltage reliably detects
Good electrical isolation performance, and the complexity of detection circuit can be reduced, to save production cost.But detection device is more multiple
It is miscellaneous, need using photoelectric coupling its, and detection accuracy is not high enough.
A kind of alternating current-direct current high voltage testing device, including processor, electrical verification are disclosed in 105137157 A of patent document CN
Unit, voltage class judging unit, the alternating current for the probe of charge inducing and for detecting high-tension apparatus magnetic field judge single
Member；Alternating current-direct current high voltage testing device provided by the utility model can both examine exchange, can also examine direct current, be suitable for existing
Alternating current-direct current high-tension apparatus and novel super high voltage direct current electricity transmission equipment, and while whether detection device charges, may be used also
With the voltage class of detection device, be particularly suitable for Devices to test voltage class it is unknown when the case where, can be widely applied to
The power equipment or cable of all voltage class, the utility model applicability are extremely strong, safe, easy to carry.But device master
It is used to detect AC and DC, detection accuracy is lower.
The country is not directly used in the high direct voltage source of early warning on high direct voltage line project vehicle, present equipment at present
Using extremely complex and can not be installed on big machinery, it is not able to satisfy actual needs.It can be used for direct current height in existing equipment
The equipment for pressing detection is less, and volume is big, operating difficulties, needs scene ground connection；Poor repeatability, frequent test data are inconsistent；
Power consumption height cannot use for a long time；Mostly hand-held uses, and can not be mounted to machine.
Utility model content
Based on above background, for various problems existing for current high direct voltage early warning field, the utility model proposes
A kind of high direct voltage non-contact prior-warning device, comprising: shell, magnet and circuit board；The inside of outer casing bottom is arranged in magnet
On face；Circuit board fixation is provided with DC electric field warning module, GPS warning module and channel radio inside the housing, on circuit board
Believe module, DC electric field warning module includes controller, and wireless communication module includes antenna；The controller includes being sequentially connected with
Signal acquisition module, signal processing module, signal amplifier, signal analysis module and alarm module；The DC electric field is pre-
Alert module detection DC high-voltage field signal simultaneously issues pre-warning signal alarm, and the GPS warning module is described by positioning early warning
GPS warning module uses dual-mode working mode, first is that backstage is passed back by GPRS module, the other is passing through Bluetooth function and hand
Machine APP is connected, and is carried out data transmission using APP；The signal acquisition module includes electric-field sensor, the signal processing module
Including current rectifying and wave filtering circuit, the signal amplifier includes the imported OTL amplifying circuit in front end, and the signal analysis module includes
Dsp chip and the data comparator connecting with the dsp chip store alarming value in the dsp chip, and the data compare
Device is compared collection result and alarming value, and the alarm module includes the acousto-optic connecting with the dsp chip output pin
Warning device, the acoustic-optic alarm include loudspeaker and LED light, and the LED light includes LED high frequency warning lamp, described to raise
Sound device includes buzzer siren, and the antenna uses double mode antenna, bent rotation.
Further, the prior-warning device is adsorbed on big machinery.
Further, the controller uses dedicated asic chip.
Further, the wireless communication module includes 2.4G wireless communication module.
Further, the GPS warning module includes GPS and Beidou positioning.
The utility model has the following beneficial effects: a kind of high direct voltage electric power equipment non-contact intelligent prior-warning device is proposed,
It can be installed on big machinery, it is easy to use and reliable, so that the simple polygamy of whole system reduces, may be implemented positive and negative to direct current
Voltage early warning, the interim installation of method that magnet can also be used in device is very convenient, can play under high direct voltage route
The function for the mechanical early warning just constructed, can be to avoid the generation of man-machine accident.GPS positioning module uses dual-mode working mode, together
When support GPS and Beidou, automatically switch, it is reliable and stable.What prior-warning device can be convenient is installed on heavy mechanical equipment, is convenient for
Disassembly.Prior-warning device can also improve the essence of high direct voltage detection positioning early warning by GPS positioning module auxiliary positioning early warning
Degree, it is reliable and stable.The present apparatus is low in energy consumption, extends using the time.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model prior-warning device；
Fig. 2 is the structural schematic diagram of the utility model circuit board；
Fig. 3 is the structural schematic diagram of the utility model prior-warning device controller.
Fig. 4 is the circuit structure diagram of the utility model prior-warning device controller signals amplifier.
Specific embodiment
The utility model is described in detail with reference to the accompanying drawing.
The utility model provides a kind of non-contact prior-warning device of high direct voltage, and prior-warning device is mounted on the mainframe of work
It in tool equipment, is installed by fixed forms such as screws, installation can also be fixed temporarily in such a way that magnet adsorbs.Prior-warning device
Magnet is installed, the interim absorption for prior-warning device, which is installed, to be fixed on shell.
As shown in Figure 1, being the structural schematic diagram of prior-warning device, 1 is prior-warning device, and 2 be shell, and 3 be antenna；Circuit board is solid
It is scheduled on the inside of shell, controller, GPS positioning module and wireless communication module are provided on circuit board；As shown in Figure 2,5 are
Wireless communication module, 6 be controller, and 7 be GPS positioning module；Prior-warning device includes shell, magnet and circuit board, magnet in figure
It is arranged on the medial surface of outer casing bottom, for prior-warning device to be easily adsorbed on to big machinery device, big machinery one
As be metal, mainly irony is easy for installation using magnet, easy to disassemble, simple and easy.
Circuit board is fixed on the inside of shell, and controller, wireless communication module and GPS positioning mould are provided on circuit board
Block, wireless communication module include antenna.Controller uses dedicated asic chip, is illustrated in figure 2 the structural schematic diagram of controller.
Controller includes sequentially connected signal acquisition module, signal processing module, signal amplifier, signal analysis module and alarm mould
Block.When prior-warning device works: signal acquisition module acquires DC high-voltage field signal；It is handled by signal processing module, later
Using amplifier amplifies signals；It is sent into DC high-voltage field signal analysis module later, when electric field strength is greater than predetermined value,
Pre-warning signal is then triggered, warning module is started to work.According to the common working environment of big machinery, such as spacious dry open country
Outside, different electric field strength predetermined values is arranged around moist marshland etc. in mountain environment.With outdoor spacious in the present embodiment
For ground, setting electric field strength predetermined value is 4kv/m.When the electric field intensity value that detection obtains is greater than 4kv/m, point of controller
Analysis inside modules circuit issues warning signal warning module, and warning module includes loudspeaker and LED light, receives early warning
After signal, warning module makes a sound and visual alarm；Meanwhile controller can by wireless communication module by pre-warning signal
It is sent to external smart terminal.
Each composition structure division of controller is described in detail below.
Electric-field sensor can use the board-like electric-field sensor of parallel metal, for acquiring DC high-voltage field signal, this
It is to generate the principle of surface induction charge in the electric field based on metal to be designed, sensing module is by the induced electricity of metal surface
Lotus is converted into current signal.
Due to during charge inducing is converted current signal by electric-field sensor, will receive a large amount of clutter or
The interference of industrial frequency noise is handled acquisition signal so needing signal processing module, and signal processing module includes rectification
Filter circuit, including low-pass filter shunt capacitance interconnected.For high frequency spurs, the incoming end of current rectifying and wave filtering circuit is set
Bandpass filter is set low, and for low-frequency noise, it is directly bypassed with bulky capacitor, guarantees the accuracy of signal, low-pass filtering
Device and shunt capacitance are all more universal well-known techniques, so details are not described herein.
Antenna is the important transmitting-receiving tool in this programme, and basic function is reception and radiated electromagnetic wave, in order to increase nothing
Line transmission range, using the gain and performance for improving antenna, this programme antenna uses double mode antenna, works in 430MHz extremely
The signal transmission power of the public wave band of 433MHz, the wave band is no more than 10mV, in order to promote sensitivity, the antenna that the present invention is arranged
For high-performance double mode antenna, it can be obviously improved wireless performance, for the most important parameter of antenna: directionality and gain are imitated
Fruit, this programme have used double mode antenna when using wireless transmission according to the demand and feature of practical engineering application
To realize that the comprehensive of both of which antenna uses, double mode antenna includes directional gain antenna and Omnidirectional rotation antenna, and orientation increases
Beneficial antenna is spiral arm dipole antenna, is connected by coaxial cable with signal transmitting and receiving end, can play reception and transfer parameter and refer to
The effect of voltage feedback signal is enabled and transmits, to reduce the difficulty of directionality alignment between engineering up-regulation line all day；Omnidirectional
Rotable antenna is to connect in the small spiral antenna that normal orientation is omnidirectional with controller, plays transmitting instruction, the work of feedback signal
With.Being configured so that the principle of antenna is: when antenna needs to send signal to multiple target sides, installation site can be in regulation model
Interior random adjustment is enclosed, therefore the high-gain aerial of orientation can be used；And installing when aerial position is determined by measured point position, peace
Dress direction may use normal direction than requiring that the command signal from controller can be received in narrow and all directions
The small spiral antenna of upper omnidirectional reduces the difficulty of directionality alignment between engineering up-regulation line all day.
Signal amplifier is an important part in controller, due to signal acquisition module signal collected
It is smaller that there are energy, the shortcomings that decay, so being put before being compared processing to its signal analysis module
Big processing, but due to impedance operator, if being directly connected to amplification coupling circuit, as signal is too small, will soon be declined
It cuts.It is gone on smoothly for that purpose it is necessary to amplify small signal using specific signal amplifier to make entirely to communicate comparison procedure.
According to the actual situation, the technology of signal amplifier mainly realizes following aspect function: there is sufficiently large output power,
Guarantee signal transmitted in coupled system and circuit in normal transmission；It is required that the rated load impedance of signal amplifier with couple electricity
Road impedance matching；Since load variations are bigger, it is desirable that power amplifier has strong carrying load ability；It is required that signal amplifier works
Stablize, reliable performance；The characteristics of according to typical OTL circuit, the experimental circuit for building signal amplifier is as shown in Figure 4.The circuit
In, front end is voltage amplifier, and for OTL circuit by front end input signal, rear end is output signal.
In the dsp chip of signal entering signal analysis module by amplification, and number connected to it is called by dsp chip
According to comparator, the alarming value stored in collection result and dsp chip is compared by data comparator, if reaching report
Alert standard, just exports high level signal by the output pin of dsp chip, thus the sound-light alarm dress that triggering is connect with output pin
Initiation alarm is set, acoustic-optic alarm includes loudspeaker and LED light, and the LED light includes LED high frequency warning lamp, the loudspeaking
Device includes buzzer siren.
Wireless communication module can be communicated using 2.4G wireless communication mode, and 2.4G belongs to ISM band, be industry, science
With medical frequency range, it is not necessarily to licensing using these frequency ranges, high direct voltage electric power equipment non-contact intelligent early warning system is divided into detection
Detection processing direct current field intensity signal is responsible in end and receiving end, test side, bears when being arranged close to high direct voltage and reaching risk distance
Early warning is blamed, receiving end receives acousto-optic early warning after early warning by 2.4G wireless telecommunications, and 2.4G module is responsible for the communication work of equipment room
Make.The communication speed of 2Mbit/S may be implemented in the 2.4G communication module of the utility model deduction, is that the later extension of device is also pre-
Bandwidth is stayed.2.4G belongs to ISM band, is Industrial Scientific Medical frequency range, is not necessarily to licensing, but power using these frequency ranges
No more than 1W, the utility model proposes 2.4G module communication power be much smaller than 1W.2.4G is widely used in each field,
Such as wireless router, bluetooth, but also without applied to high direct voltage electric power equipment non-contact intelligent early warning system, the utility model
This technology is applied to the system, so that this system becomes very simple in installing for big machinery, it is no longer necessary to capstan winch
It is also very strong to install simple and convenient stability for the mode of equal wire communications.2.4G is applied to industrial site to communication distance at present,
Whether scene, which has screen to influence communication etc., there are certain requirements, and consider these problems, the utility model 2.4G communication distance is
200M is not enough to influence to communicate, has enough surpluses having certain screen.
It is additionally provided with GPS positioning module on the prior-warning device of the utility model early warning system, is responsible for equipment positioning function, is
The supplemental functionality of early-warning for high pressure can carry out data exchange with background system, make many warning functions by being positioned to reality
It is existing, such as Zone Alerts function, alarm region can be drawn in map from the background, will call the police when mechanical equipment enters the region just,
Backstage personnel can intervene work mechanical or that monitoring is mechanical.To guarantee that reliable location, GPS positioning module use dual-mode of operation side
Formula, while supporting GPS and Beidou, automatically switch, it is reliable and stable.Data back are passed in backstage using two ways, first is that passing through
GPRS module passes backstage back, the other is be connected with cell phone application by Bluetooth function, by the wireless channel of mobile phone by data and
Backstage swaps.GPS is widely used is applied to that high direct voltage electric power equipment is non-to be connect in each field, the utility model
Intelligent early-warning system is touched, so that this system has the high direct voltage warning function in addition to DC electric field early warning.GPS data is passing
Defeated upper all common in the past is transmitted with GPRS function, and for this mode there are many inconvenient place, power consumption is big, needs SIM card, is gone back
There is the problem paid dues etc., the utility model carries out data transmission becoming simple and convenient using APP, and existing GPS is using double
Mould mode overcomes the problem of equipment can not position after some regions are interfered.
The utility model proposes high direct voltage electric power equipment non-contact intelligent early warning system, it is easy for installation, can pass through
Magnet is absorbed and fixed on big machinery device, and need to only access the power supply of 24v supply voltage can work.
Embodiment described above describes more specific and detailed, and but it cannot be understood as to the utility model patent
The limitation of range.It should be pointed out that for those of ordinary skill in the art, not departing from the utility model design
Under the premise of, various modifications and improvements can be made, and these are all within the protection scope of the present invention.Therefore, this is practical new
The scope of protection shall be subject to the appended claims for type patent.
Claims (5)
1. a kind of non-contact prior-warning device of high direct voltage, comprising: shell, magnet and circuit board；Outer casing bottom is arranged in magnet
On medial surface；Circuit board fixation is provided with DC electric field warning module, GPS warning module and nothing inside the housing, on circuit board
Line communication module, DC electric field warning module include controller, and wireless communication module includes antenna；The controller includes sequentially
Signal acquisition module, signal processing module, signal amplifier, signal analysis module and the alarm module of connection；The direct current
Field warning module detection DC high-voltage field signal simultaneously issues pre-warning signal alarm, and the GPS warning module passes through positioning early warning,
The GPS warning module uses dual-mode working mode, first is that backstage is passed back by GPRS module, the other is passing through Bluetooth function
It is connected with cell phone application, is carried out data transmission using APP；The signal acquisition module includes electric-field sensor, the signal processing
Module includes current rectifying and wave filtering circuit, and the signal amplifier includes the imported OTL amplifying circuit in front end, the signal analysis module
Including dsp chip and the data comparator connecting with the dsp chip, alarming value, the data are stored in the dsp chip
Comparator is compared collection result and alarming value, and the alarm module includes connecting with the dsp chip output pin
Acoustic-optic alarm, the acoustic-optic alarm include loudspeaker and LED light, and the LED light includes LED high frequency warning lamp, institute
Stating loudspeaker includes buzzer siren, and the antenna uses double mode antenna, bent rotation.
2. the non-contact prior-warning device of a kind of high direct voltage according to claim 1, which is characterized in that the prior-warning device is inhaled
It is attached on big machinery.
3. the non-contact prior-warning device of a kind of high direct voltage according to claim 1, which is characterized in that the controller uses
Dedicated asic chip.
4. the non-contact prior-warning device of a kind of high direct voltage according to claim 1, which is characterized in that the radio communication mold
Block includes 2.4G wireless communication module.
5. the non-contact prior-warning device of a kind of high direct voltage according to claim 1, which is characterized in that the GPS early warning mould
Block includes GPS and Beidou positioning.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721880871.2U CN208224370U (en) | 2017-12-28 | 2017-12-28 | A kind of non-contact prior-warning device of high direct voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721880871.2U CN208224370U (en) | 2017-12-28 | 2017-12-28 | A kind of non-contact prior-warning device of high direct voltage |
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| CN208224370U true CN208224370U (en) | 2018-12-11 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521266A (en) * | 2019-01-25 | 2019-03-26 | 南京文道自动化系统有限公司 | ± 800KV extra-high voltage direct-current non-contact intelligent electroscope |
| CN111766434A (en) * | 2020-08-06 | 2020-10-13 | 苏州康力丰纳米科技有限公司 | High-voltage safety indicating device based on nematic polymer polarization and application method |
-
2017
- 2017-12-28 CN CN201721880871.2U patent/CN208224370U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109521266A (en) * | 2019-01-25 | 2019-03-26 | 南京文道自动化系统有限公司 | ± 800KV extra-high voltage direct-current non-contact intelligent electroscope |
| CN111766434A (en) * | 2020-08-06 | 2020-10-13 | 苏州康力丰纳米科技有限公司 | High-voltage safety indicating device based on nematic polymer polarization and application method |
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