CN206147022U - Intelligence platform district recognition device - Google Patents
Intelligence platform district recognition device Download PDFInfo
- Publication number
- CN206147022U CN206147022U CN201620985390.7U CN201620985390U CN206147022U CN 206147022 U CN206147022 U CN 206147022U CN 201620985390 U CN201620985390 U CN 201620985390U CN 206147022 U CN206147022 U CN 206147022U
- Authority
- CN
- China
- Prior art keywords
- module
- signal
- identifying device
- intelligent platform
- current
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)
Abstract
The utility model discloses an intelligence platform district recognition device, intelligence platform district recognition device pours into the all -in -one structure of sending with discernment into for the signal, intelligence platform district recognition device includes signal -radiation module, voltage testing, current detection module, signal processing module, information display module, and wherein signal -radiation module adopts the zero crossing to send the big current pulse mode of negative pressure. Signal -radiation module, voltage testing, current detection module, signal processing module, information display module are connected through the cable. The utility model discloses an intelligence platform district recognition device, intelligence platform district recognition device's system simple structure, it is portable good, when the low -voltage power supply network zero crossing, send the negative pressure signal to low -voltage power supply network to utilize electric current loop measuring current size and direction, discernment cable attribute, detection streamer voltage waveform, discernment cable platform district ownership, compare the tradition and use the carrier system communication, or use near the communication of zero crossing short circuit mode, have the negative pressure signal and have a great deal of signal advantages such as the signal is stronger, current reversal.
Description
Technical field
This utility model is related to electric and electronic technical field and digital signal encoding field, and in particular to a kind of Intelligent platform zone
Identifying device.
Background technology
At present, electric company is for the confirmation and management of the load nature of electricity consumed of power consumer, more by the electricity consumption of power consumer
Information on request slip, and the change for the load nature of electricity consumed of power consumer and real load nature of electricity consumed all lack effectively supervision
And management, and power utility check link also lacks effective detection meanss to such situation.
Existing low-voltage cable is counted with platform area centralized meter-reading system collection resident's electric energy information, then the data to gathering
Process, it is impossible to realize that the load nature of electricity consumed to low-voltage cable with platform area power consumer is analyzed, so as to cause electric company to be in
Very passive state；In addition, due also to low-voltage cable and platform area user are more, structure is multiple for existing low-voltage electric energy information system
It is miscellaneous, cause its system when checking, there are human and material resources and put into huge, larger to electric power monitoring dependency and be difficult to obtain pre-
The situation of phase effect.
Conventional cable and platform area recognition method are on low-voltage cable, when voltage is 100V or so, by cable fire
Line and zero line short circuit, send a heavy current pulse, and the equipment on cable, by detecting the current impulse, judges cable
Attribute.Meanwhile, the cable machinery sill car waveform sends social sending station area in whole network detection, to reach the purpose of identification.
But this method has disadvantages that：First, clip contact point is had high demands, it is if contact is bad, short-circuit at up to 100V, hold
Spark is easily caused, and easily causes equipment damage, more importantly, contact bad, heavy current pulse is not launched, and is affected
Test result；Second, high to electric wire prescription, if transmitter is in end, and cable resistance is especially big, then electric current sends not
Success and voltage difference all loss on cable, the equipment for being connected on platform area initial segment receives voltage signal at all；3rd, such as
Really there is powerful device in a non-sent cable simultaneously, and power consumption is especially big, will result in cable current identification and does not prepare, produces
Erroneous judgement.So single voltage short-circuiting method effect is not so good.Improved later, current signal is using short circuit transmission, voltage
Signal is sent using carrier wave.The utility model patent of Application No. 200820234129.9 is exactly such equipment for sending, carrier wave
Signal can more preferably cable platform area inside send, compare the voltage pit that single short circuit is produced, transmission range is good
A lot, but carrier signal be AC signal, can easily through voltage device, so as to send signal to other areas, produce
Raw erroneous judgement.Application number 201410014575.9 provides a kind of platform area of new injecting voltage pulsed and recognizes that advantage is in mistake
Positive potential pulse is injected at zero, but the patent does not provide electric current identification.
Utility model content
For cable present in prior art and platform area technology of identification problem, this utility model provides a kind of intelligent station
Area's identifying device and method, to solve, larger system bulk present in prior art, complex structure, portability be poor, signal is anti-
The problems such as interference performance is poor and easily causes misrecognition, to meet the load nature of electricity consumed information of low-voltage cable and platform area power consumer
Collection is actually needed with supervision and management.
To achieve these goals, this utility model is adopted the following technical scheme that.
A kind of Intelligent platform zone identifying device, the Intelligent platform zone identifying device are the all-in-one that signal injection is sent with identification
Structure；The Intelligent platform zone identifying device includes signal emission module, voltage detection module, current detection module, signal processing
Module and information display module；Wherein signal emission module sends negative pressure heavy current pulse mode using zero crossing；The signal
Transmitter module, voltage detection module, current detection module, signal processing module, information display module are connected by cable.
Preferably, the signal emission module is powered using the ACDC switch power modules isolated with electrical network.
In any of the above-described technical scheme preferably, the ACDC switch power modules that the signal emission module is adopted for
12V/2A。
In any of the above-described technical scheme preferably, the signal emission module includes relay, electric capacity, resistance, opens
Guan Guan, power module and control module.
In any of the above-described technical scheme preferably, the relay, electric capacity, resistance, switching tube, power module and control
Molding block connects and composes signal emission module, and the signal that the signal emission module sends is negative pressure relative to line voltage.
In any of the above-described technical scheme preferably, the signal emission module connects voltage detection module；The letter
The signal that number transmitter module sends is in electrical network zero crossing, and voltage detection module receives electrical network zero-crossing pulse signal.
In any of the above-described technical scheme preferably, the voltage detection module connection current detection module constitutes detection
Circuit.
In any of the above-described technical scheme preferably, the detection circuit adopts three roads detection pattern simultaneously, differentiates ABC
Whether phase sequence accesses correctly.
In any of the above-described technical scheme preferably, the current detection module is using current transformer clamp detection electricity
Stream.
In any of the above-described technical scheme preferably, the current detection module detects electric current using Luo-coil.
In any of the above-described technical scheme preferably, electricity is preferentially judged when the current detection module judges cable attribute
Stream direction.
The invention also discloses a kind of Intelligent platform zone recognition methodss, know including the Intelligent platform zone described in as above any one
Other device, the Intelligent platform zone identifying device send negative pressure signal to low voltage electric network, using electric current in low voltage electric network zero crossing
Ring detects size of current and direction, recognizes cable attribute, detects voltage cable waveform, identification cable platform area ownership.
In any of the above-described technical scheme preferably, each ripple of the Intelligent platform zone identifying device using electrical network 50Hz
Shape carries out binary coding, realizes the transmission of different information.
In any of the above-described technical scheme preferably, the signal emission module connection electricity of the Intelligent platform zone identifying device
Pressure detection module, is negative pressure to the potential pulse of electrical network injection, and signal is just in zero crossing transmission.
In any of the above-described technical scheme preferably, the method for the transmission negative pressure that negative pressure is injected to electrical network includes：
Using relay, electric capacity, resistance, switching tube, power module and controller module, relay, electric capacity, resistance, switching tube, power supply
Module and controller module connect and compose signal emission module, wherein, electric capacity is powered for storage capacitor, and the resistance is the electricity that charges
Resistance.
In any of the above-described technical scheme preferably, the method for sending negative pressure, switches over work using relay
Make so that radiating circuit can work at each of three-phase voltage.
In any of the above-described technical scheme preferably, the detection circuit of the Intelligent platform zone identifying device includes that voltage is examined
Module and current detection module are surveyed, is detected using three roads simultaneously, it is possible to authenticate whether ABC phase sequences access correctly, if accessed wrong
By mistake, report to the police.
In any of the above-described technical scheme preferably, the current detection module can be by the sense of current so as to more
Accurately judge to send the corresponding branch road of cable.
In any of the above-described technical scheme preferably, the current detection module can adopt current transformer clamp or
Luo-coil is detecting electric current.
For recognizing present in prior art that platform sound zone system volume is larger, complex structure, portability be poor, signal is anti-interference
The problems such as ability is poor and easily causes misrecognition, Intelligent platform zone identifying device of the present utility model and method, can meet low
Voltage cable is actually needed with the load nature of electricity consumed information gathering and supervision and management of platform area power consumer.
Intelligent platform zone identifying device of the present utility model is signal injection and the all-in-one machine structure for recognizing transmission, Intelligent platform zone
Identifying device includes signal emission module, voltage detection module, current detection module, signal processing module, information display module,
The signal emission module, voltage detection module, current detection module, signal processing module, information display module pass through cable
It is connected.The system structure of Intelligent platform zone identifying device of the present utility model is simple, good portability, in low voltage electric network zero crossing
When, negative pressure signal is sent to low voltage electric network, size of current and direction is detected using electric current loop, recognize cable attribute, detect cable
Voltage waveform, identification cable platform area ownership.Compare tradition to communicate using carrier system, or it is logical using near zero-crossing point short circuit manner
News, there is negative pressure signal to have that signal is higher for Intelligent platform zone identifying device of the present utility model and method, electric current is reversely etc. many
Signal advantage.
Compared with prior art, above-mentioned technical proposal of the present utility model also has the advantages that：
Compared to the reverse note that the forward voltage pulse injected in the prior art, the technical solution of the utility model are improved
The advantage for entering potential pulse has：The pulse for only needing to inject positive half can just produce onesize reverse pit waveform,
Radiating circuit is simpler, and cost is cheaper, and forward voltage impulses injection needs switching tube in live wire slowdown monitoring switch, so, needs
The PMOS or the method using isolation drive of high pressure are wanted, but cost is just higher, using the technical solution of the utility model
Negative pressure input method, zero line is connected with the positive pole for sending power supply, is so only needed to using the most common NMOS tube, or
Controllable silicon, easily can control, and always greatly reduce the cost of sending module, and switching tube, 3 relays make
With the mode of direct drive, relay has been used to switch three transmissions so that a transmitting element can just meet ABC three-phase electricities
Cable, has reached cost minimum.
Description of the drawings
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, below will be to embodiment
Or accompanying drawing to be used is briefly described needed for description of the prior art, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, before creative labor is not paid
Put, can be with according to these other accompanying drawings of accompanying drawings acquisition.
Fig. 1 is that the platform area cable distribution of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model is illustrated
Figure；
Fig. 2 is the letter of the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model
Number transmitter module schematic diagram；
Fig. 3 is sending out for the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model
Schematic diagram before the transmission of ejected wave shape；
Fig. 4 is sending out for the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model
Schematic diagram after the transmission of ejected wave shape；
Fig. 5 is sending out for the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model
Power transmission flow diagram；
Fig. 6 is the electricity of the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model
Road principle schematic；
Fig. 7 is the platform area identifying device of the preferred embodiment according to Intelligent platform zone identifying device of the present utility model and side
The decision logic of method is with operation instruction and with reference to wiring schematic diagram.
Specific embodiment
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only this utility model a part of embodiment, rather than whole
Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment for being obtained, belongs to the scope of this utility model protection.
Embodiment 1
In order to overcome cable and the identification of platform area the problems of in the prior art, this utility model embodiment proposes one
Plant Intelligent platform zone identifying device.
Intelligent platform zone identifying device described in this utility model embodiment is the one that a kind of signal injection is sent with identification
Machine, it includes signal emission module, voltage detection module, current detection module, signal processing module, information display module, letter
Number transmitter module, voltage detection module, current detection module, signal processing module, information display module are connected by cable.
Signal emission module is powered using the ACDC switch power modules isolated with electrical network, 12V/2A.Signal emission module includes relay
Device, electric capacity, resistance, switching tube, power module and control module, relay, electric capacity, resistance, switching tube, power module and control
Module connects and composes signal emission module, and the signal that signal emission module sends is negative pressure relative to line voltage.Signal is launched
Module connects voltage detection module；The signal that signal emission module sends is in electrical network zero crossing, and voltage detection module receives electricity
Net zero-crossing pulse signal.
Intelligent platform zone identifying device described in this utility model embodiment, voltage detection module connection current detection module structure
Into detection circuit, detection circuit is using three roads while detection pattern, differentiates whether ABC phase sequences access correctly.Current detection module
Electric current is detected using current transformer clamp, or electric current is detected using Luo-coil.Current detection module may determine that cable belongs to
The sense of current is preferentially judged during property.
Intelligent platform zone identifying device described in this utility model embodiment, its Intelligent platform zone recognition methods：Know Intelligent platform zone
Other device sends negative pressure signal to low voltage electric network in low voltage electric network zero crossing, detects size of current and direction using electric current loop,
Identification cable attribute, detects voltage cable waveform, identification cable platform area ownership.
Intelligent platform zone recognition methodss described in this utility model embodiment, Intelligent platform zone identifying device is using electrical network 50Hz's
Each waveform carries out binary coding, realizes the transmission of different information.The signal emission module connection of Intelligent platform zone identifying device
Voltage detection module, is negative pressure to the potential pulse of electrical network injection, and signal is just in zero crossing transmission.Negative pressure is injected to electrical network
The method for sending negative pressure includes：Using relay, electric capacity, resistance, switching tube, power module and controller module, relay, electricity
Appearance, resistance, switching tube, power module and controller module connect and compose signal emission module, wherein, electric capacity is supplied for storage capacitor
Electricity, the resistance are charging resistor.The method for sending negative pressure, switches over work using relay so that radiating circuit can be with
Each in three-phase voltage works.The detection circuit of Intelligent platform zone identifying device includes voltage detection module and current detecting mould
Block, is detected simultaneously using three roads, it is possible to authenticate whether ABC phase sequences access correctly, if accessing mistake, is reported to the police.Current detecting mould
Block can pass through the sense of current so as to more accurately judge to send the branch road corresponding to cable.Current detection module can be with
Electric current is detected using current transformer clamp or Luo-coil.
The system structure of the Intelligent platform zone identifying device described in the present embodiment is simple, good portability, in low voltage electric network zero passage
During point, negative pressure signal is sent to low voltage electric network, size of current and direction are detected using electric current loop, recognize cable attribute, detection electricity
Cable voltage waveform, identification cable platform area ownership.
Embodiment 2
The same manner as in Example 1, in order to overcome cable and the identification of platform area the problems of in the prior art, this practicality is newly
Type embodiment proposes a kind of Intelligent platform zone identifying device, and the Intelligent platform zone identifying device is that a kind of signal injection is sent with identification
All-in-one, it includes signal emission module, voltage detection module, current detection module, signal processing module, presentation of information mould
Block, signal emission module, voltage detection module, current detection module, signal processing module, information display module pass through cable phase
Connection.Signal emission module is powered using the ACDC switch power modules isolated with electrical network, 12V/2A.Signal emission module includes
Relay, electric capacity, resistance, switching tube, power module and control module, relay, electric capacity, resistance, switching tube, power module and
Control module connects and composes signal emission module, and the signal that signal emission module sends is negative pressure relative to line voltage.Signal
Transmitter module connects voltage detection module；The signal that signal emission module sends is in electrical network zero crossing, and voltage detection module connects
Receive electrical network zero-crossing pulse signal.Intelligent platform zone identifying device and method can meet the electricity consumption of low-voltage cable and platform area power consumer
Property information collection is actually needed with supervision and management.
As shown in Figures 1 to 7, Intelligent platform zone identifying device and method have used transmitting to receive the all-in-one mould of current detecting
Formula, it includes signal emission module, voltage detection module, current detection module.Signal emission module has been used is isolated with electrical network
ACDC switch power modules power, preferably 12V/2A；Again by limit the quantity resistance R1 by energy storage and energy storage resistance C1,
Resistance R1, preferably 51R/2W, electric capacity C1 are preferably 10000uF/35V.Zero-crossing detection circuit is constituted by comparator, it is excellent
Three comparators in the comparator for using of choosing to tri- contrasts of ABC, judge zero crossing time and phase sequence, find phase sequence respectively
False alarm, as shown in Figure 6.
Intelligent platform zone identifying device described in the present embodiment, was close to zero crossing when detecting, and is close to voltage and is preferably
When line voltage 20V, switching tube is opened, switching tube is preferably NMOS tube and controllable silicon.During sending signal, line voltage
Moment have sent the pit of a 32V equal to electrical network directly to negative 12v from 20v, but the pressure reduction of this 32V definitely different from from
100v moves the pressure reduction of 0v to, and as electrical network 100v, the electric current of each branch road is also very big.So, single branch, short-circuit, if wire
Resistance itself is big, and contacting bad, produced electric current would not be very big, will result in electric current identification situation not out.In addition,
Because electrical network power supply capacity when 100v is very strong, electric current is not enough greatly to be not enough to line voltage to pull down, and is adopted
Zero point negative pressure sends, and sends branch current moment and increases, and other branches electric current can be reverse on the contrary, imitate in terms of such electric current identification
It is really particularly evident.During zero crossing, power network current very little, line voltage are easy to disturbance.The voltage waveform that so zero crossing sends,
Just it is easy to be delivered to each corner of electrical network.
Intelligent platform zone identifying device described in the present embodiment, control module is using high-speed AD to adopting per voltage all the way
Sample, but send voltage waveform when zero crossing is not sine wave, by comparing error size, accurately judges whether now platform
Area's network has signal to send.Current detection module, preferably using Luo-coil, it is also possible to using current transformer clamp.
Intelligent platform zone identifying device described in the present embodiment, it is possible to use multiple Luo-coils are carried out to each branch simultaneously
Testing current, it is preferred to use four coils.Become big when a coil current size moment, other coil currents are changed into negative
When, judge the attribute of electric current branch.
Intelligent platform zone identifying device and method, decision logic and operation instruction described in the present embodiment, and with reference to wiring such as
Shown in Fig. 7：
Each equipment carries extension number, for example, seen now that two equipment：Equipment 1, equipment 2；
Recognize now the ownership of feeder pillar and platform area, it is assumed that there are 3 feeder pillars；
Equipment 1 is placed at platform area, and tri- voltage clamps of ABC are corresponded to respectively and are clipped on ABC cables, is clipped in that without the need for distinguishing
In individual branch；Zero line clamp is clipped on zero line, and three electric current loops are respectively fitted over No. 1 of cable outlet at platform area, No. 2, No. 3 zero lines
On, equipment 2 is connected at feeder pillar 1；
1 automatic identification equipment of equipment whether there is wiring error, and wiring error is then reported to the police；
After 2 button of equipment sends, equipment 1 detects voltage signal in A phases, and, in No. 1 branch, equipment 1 is at once for current signal
Return signal, voltage A phases, No. 1 branch of electric current；
Without using electric current loop, equipment 2 receives signal to equipment 2, and 2 display screen of equipment shows voltage A phases, No. 1 point of electric current
Prop up and complete identification；
Step same as above, completes identification of the electricity box with feeder pillar and the identification in electricity box and platform area.
The above is only that preferred implementation of the present utility model is described, and is not to model of the present utility model
Enclose and be defined, on the premise of without departing from this utility model design spirit, this area ordinary skill technical staff is to this practicality
Various modifications and improvement that new technical scheme is made, all should fall into the protection model that claims of the present utility model determine
In enclosing.
Claims (11)
1. a kind of Intelligent platform zone identifying device, it is characterised in that：The Intelligent platform zone identifying device includes signal emission module, electricity
Pressure detection module, current detection module, signal processing module and information display module；Wherein signal emission module adopts zero crossing
Send negative pressure heavy current pulse mode；The signal emission module, voltage detection module, current detection module, signal processing mould
Block, information display module are connected by cable.
2. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The signal emission module is adopted and electrical network
The ACDC switch power modules of isolation are powered.
3. Intelligent platform zone identifying device as claimed in claim 2, it is characterised in that：The ACDC that the signal emission module is adopted
Switch power module is 12V/2A.
4. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The signal emission module includes relay
Device, electric capacity, resistance, switching tube, power module and control module.
5. Intelligent platform zone identifying device as claimed in claim 4, it is characterised in that：The relay, electric capacity, resistance, switch
Pipe, power module and control module connect and compose signal emission module, and the signal that the signal emission module sends is relative to electricity
Net voltage is negative pressure.
6. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The signal emission module connection voltage inspection
Survey module；The signal that the signal emission module sends is in electrical network zero crossing, and voltage detection module receives electrical network zero-crossing pulse
Signal.
7. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The voltage detection module connection electric current inspection
Survey module composition detection circuit.
8. Intelligent platform zone identifying device as claimed in claim 7, it is characterised in that：The detection circuit is examined simultaneously using three roads
Survey pattern, differentiates whether ABC phase sequences access correctly.
9. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The current detection module is mutual using electric current
Sensor clamp detects electric current.
10. Intelligent platform zone identifying device as claimed in claim 1, it is characterised in that：The current detection module adopts Roche
Coil Detector electric current.
11. Intelligent platform zone identifying devices as claimed in claim 1, it is characterised in that：The current detection module judges cable
The sense of current is preferentially judged during attribute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985390.7U CN206147022U (en) | 2016-08-30 | 2016-08-30 | Intelligence platform district recognition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620985390.7U CN206147022U (en) | 2016-08-30 | 2016-08-30 | Intelligence platform district recognition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206147022U true CN206147022U (en) | 2017-05-03 |
Family
ID=58628634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620985390.7U Active CN206147022U (en) | 2016-08-30 | 2016-08-30 | Intelligence platform district recognition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206147022U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124908A (en) * | 2016-08-30 | 2016-11-16 | 浙江图维科技股份有限公司 | A kind of Intelligent platform zone identifies device and method |
| CN111551802A (en) * | 2020-05-06 | 2020-08-18 | 国网天津市电力公司 | Non-invasive low-voltage line switch identifier |
-
2016
- 2016-08-30 CN CN201620985390.7U patent/CN206147022U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106124908A (en) * | 2016-08-30 | 2016-11-16 | 浙江图维科技股份有限公司 | A kind of Intelligent platform zone identifies device and method |
| CN111551802A (en) * | 2020-05-06 | 2020-08-18 | 国网天津市电力公司 | Non-invasive low-voltage line switch identifier |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106124908A (en) | A kind of Intelligent platform zone identifies device and method | |
| CN103760467B (en) | A kind of one-phase earthing failure in electric distribution network point visiting method | |
| CN103698643A (en) | Low-voltage power distribution area identification method and power distribution area instrument | |
| CN104407272B (en) | A kind of cable identification device | |
| CN104237645B (en) | A kind of transformer station direct current system state of insulation on-line monitoring system and method | |
| CN201654106U (en) | Multiple-group electric-power measurement transmission device with full-time and multiplex time-sharing measurement | |
| CN103941181B (en) | Test device for acquiring on-off state of thyristor impulse power switch assembly | |
| CN207181713U (en) | A kind of grounded screen mesh topology detection device based on array matrix distribution | |
| CN206147022U (en) | Intelligence platform district recognition device | |
| CN204649868U (en) | Low-voltage electric cable pair verifies instrument | |
| CN104700527B (en) | Cable anti-theft device and its method | |
| CN207173346U (en) | Anti-overcharge device applied to intelligent charging spot | |
| CN203910935U (en) | Intelligent batteries and monitoring system for intelligent batteries | |
| CN104539274B (en) | A kind of reset circuit and WiFi communication system | |
| CN210071975U (en) | Branch monitoring device and monitoring system suitable for low-voltage distribution area topology identification | |
| CN105172612A (en) | Device for detecting connecting state of charging equipment and electric automobile | |
| CN205829622U (en) | The electric power of electrically-based line communication and network access device and system | |
| CN206132836U (en) | Current inspecting circuit and device | |
| CN208190282U (en) | A kind of protection system for the straight charging circuit of battery | |
| CN102707174A (en) | Detection system and method of operation state of resistor type superconductive current limiter | |
| CN206038776U (en) | Electric installation is tested to non -contact near -field region | |
| CN206863122U (en) | Phase angle cable identifier | |
| CN201828640U (en) | Direct-detecting intelligent apparatus for diagnosing insulation and status of direct-current (DC) system | |
| CN104991198A (en) | Battery tour inspection processing circuit based on ARM platform multichannel switching | |
| CN206132912U (en) | A travelling wave pulse generator for direct current earthing pole line fault surveys |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |