CN109596882A - A kind of photovoltaic generating system voltmeter - Google Patents
A kind of photovoltaic generating system voltmeter Download PDFInfo
- Publication number
- CN109596882A CN109596882A CN201811577800.4A CN201811577800A CN109596882A CN 109596882 A CN109596882 A CN 109596882A CN 201811577800 A CN201811577800 A CN 201811577800A CN 109596882 A CN109596882 A CN 109596882A
- Authority
- CN
- China
- Prior art keywords
- stepper assemblies
- rear cover
- generating system
- voltage
- voltmeter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
- G01R19/25—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques
- G01R19/2503—Arrangements for measuring currents or voltages or for indicating presence or sign thereof using digital measurement techniques for measuring voltage only, e.g. digital volt meters (DVM's)
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/76—Power conversion electric or electronic aspects
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
A kind of photovoltaic generating system voltmeter, it is characterized by: the present invention is by stepper assemblies, pointer, voltage preprocessing module and panel are encapsulated in by front frame, in the space that center and rear cover are surrounded, built-in voltage preprocessing module directly can convert stepping angle serial data required for numerical indexes driving assembly for voltage measuring value, amount of deflection needed for the serial data can be converted to drive indicators turn axis by built-in stepper assemblies, the voltage data currently indicated can also be uploaded to cloud data center by Zigbee WLAN by stepper assemblies simultaneously, the voltmeter service life is up to 30 years, it is particularly suitable for photovoltaic generating system, the inspection of the concentration of distributed wind power system and local Internet of Things, its unexpected effect is to have filled up the blank of network digital voltmeter, it is particularly suitable for lattice gauge The digitlization of table and high-end instrument indicates that application prospect is quite wide.
Description
Technical field
The present invention relates to a kind of photovoltaic generating system voltmeters, are mainly used in new energy photovoltaic generating system, distribution
Wind power generation system and field of industrial automation control.
Background technique
New energy photovoltaic generating system has a basic demand, and generated energy quality guarantee 25 years, generated energy attenuation rate in 25 years
20% or so.That is, new energy photovoltaic generating system should at least work in 25 years, therefore, it is related to solar power generation system
Power core, that is, solar components of system, it is desirable that its service life, as support system and inverter, was required at 25 years or more
Quality guarantee 5 years, quality guarantee was protected by prolonging to 25 years again after expiring.
New energy photovoltaic generating system includes grid type, off-network type and provides multiple forms of energy to complement each other and search for the application forms such as micro-capacitance sensor, nothing
Measurement voltmeter is required to by using which kind of pattern.Voltmeter has needle dc voltmeter and LCD digital display voltage meter, LCD
Power consumption for displays is small radiationless, and shortcoming is that the core component of LCD display is by liquid crystal layer and upper and lower two panels polarizing film
And backlight assembly composition, the main component of backlight assembly is two parts of backlight lamp tube and light guide plate, determines the main of service life
It is the service life of backlight lamp tube, is reaching after a certain period of time, backlight lamp tube will appear aging naturally, and brightness decreases, when
Lamp tube service life is defined as using the time when lighting tube brightness decays to 50%.The nominal service life of LCD is 2~30,000 small
When, if 24 hours one day are switched on, may only use 833~1250 days, only less than 3.5 years service life time, and
In use, brightness can gradually weaken.
Traditional needle dc voltmeter is all made of the milliampere gauge outfit or microampere gauge outfit of magneto-electric principle driving, is commonly called as simulation electricity
Press table.Measured voltage is after divider, i.e., point gear generates ampere torque, the torque gram under current-carrying coil interaction
After the torsional moment for taking balance spring damped part, push pointer deflection, the size of torsional moment is by passing through the big of meter coil voltage
Small decision, the deflection angle of pointer are particularly susceptible to the shadow of the composite factors such as material, environment temperature and humidity, manufacturing process
It rings.So electromagnetical analogies pointer gauge is inherent to there is the disadvantage for being afraid of that vibration, high failure rate, pointing accuracy are low.
In view of this, the present invention is proposed a kind of photovoltaic generating system voltmeter, the characteristics of instrument, is referred to using number
Needle instruction, has the service life more than 30 years, fully meets the requirement of photovoltaic generating system quality guarantee 25 years.
Apply on the same day with the present invention patent of invention there are one " numerical indexes based on Zigbee WLAN drive
The feature of component ", component maximum has three: first is that having extra long life using nylon 66 material；Second is that ZigBee and instrument are used
Stepper motor technology is combined together, built-in instrument stepper motor ontology, PCB circuit board, ARM chip, micro-stepping Multi-level microstep
Chip, wireless signal interface chip, signal router, coordinator, external 2.4GHz antenna；Third is that can will be serial after measurement
Data are translates directly into the current angular displacement of numerical indexes by the collected information of Zigbee wireless transmission method, use
To indicate the physical quantity of measured object.
It can be said that ZigBee and instrument stepper motor natively belong to two irrelated technologies and product, but
Be by a kind of numerical indexes driving assembly based on Zigbee WLAN be applied to D.C. voltmeter be the present invention one greatly wound
It, can also be by wireless newly, which means that basic DC voltage measuring instrument device is other than having the function of to measure and indicate
Networking, routing mode the voltage data of real-time measurement is uploaded to control centre, and be the Zigbee for the opening voluntarily built
WLAN exempts from network fee.
Voltage preprocessing module built in the present invention is a high performance mixed signal module, it ensure that can be direct
Current voltage measuring value is converted into stepping angle serial number required for numerical indexes driving assembly after partial pressure sampling
According to, after which is sent in the numerical indexes driving assembly based on Zigbee WLAN, as drive indicators turn
Amount of deflection needed for axis, while the voltage data currently indicated is uploaded into cloud data center by Zigbee WLAN.
Summary of the invention
Accordingly, applicant proposed a kind of a kind of photovoltaic generating system voltmeters for being totally different from traditional technology thinking to set
Meter scheme, for convenience, " the numerical indexes driving assembly based on Zigbee WLAN " are referred to as " stepper motor
Component ", particular content are as follows:
A kind of photovoltaic generating system voltmeter, including front frame, center, rear cover, panel, stepper assemblies, pointer, voltage are located in advance
Module is managed, is characterized by:
A kind of photovoltaic generating system voltmeter encapsulates stepper assemblies, pointer, voltage preprocessing module and panel
In the space surrounded by front frame, center and rear cover；
There is a pillar in the quadrangle of the front frame respectively, and the quadrangle of the center has a mounting hole, the rear cover
Quadrangle has a rear cover screw hole, and when installation, screw is each passed through the pillar of rear cover screw hole, the mounting hole of center and front frame
It is connected；
Silk-screen has the indicating graduation of voltmeter on the panel；
PCB circuit board built in the stepper assemblies, it is thin that a face Surface Mount of PCB circuit board is welded with ARM chip, micro-stepping
Divide driving chip, wireless signal interface chip, signal router, coordinator chip；The another side installation of PCB circuit board is cored
The pin of body, excitation wire packet, driving gear set, the excitation wire packet is welded in PCB circuit board；
An external 2.4GHz antenna, the output shaft of stepper assemblies on the antenna installation step of the stepper assemblies
After stretching out from the shaft step of shell, it is socketed pointer；
When the stepper assemblies assemble, PCB circuit board is placed on the arc steps of stepper assemblies shell, stepping
In four iron-core workpiece mounting holes on iron core pillar body insertion iron-core workpiece in electric machine assembly shell, six screws pass through stepping electricity
After the shell of thermomechanical components, the installation circular hole of PCB circuit board, it is connected with arc steps；
It is realized and is electrically connected by connecting cable between the voltage preprocessing module and stepper assemblies, connecting cable is
4 cored structures, one is positive pole, and one is power cathode, and in addition two are serial data out line, pre-processes mould from voltage
After the other end for the connecting cable that block stretches out passes through the cable aperture on antenna installation step, it is welded in PCB circuit board；
The built-in partial pressure plate of the voltage preprocessing module and voltage sampling circuit, switching power circuit, signal conditioning circuit and
Project amount translation circuit, being welded after element and lead-in clamp and connecting cable becomes a cuboid by encapsulating again；
There are three stepper assemblies fixation hole, screws to pass through center for the bottom surface of the antenna installation step of the stepper assemblies
On mounting hole be connected with stepper assemblies fixation hole；
It is covered out after described there are two wiring post holes, two lead-in clamps in the voltage preprocessing module, from rear
It is stretched out at two wiring post holes of lid.
Further, the front frame, center, rear cover are all made of heat-resisting engineering plastics and are molded.
Further, the output shaft of the stepper assemblies is using stainless pin.
Further, the iron-core workpiece uses permalloy material.
Detailed description of the invention
In order to clearly demonstrate the technical solution of the embodiment of the present invention, attached drawing needed in the embodiment is made below
Simply introduce.Obviously, drawings discussed below is only some embodiments of the present invention, is come for those skilled in the art
It says, without creative efforts, can also draw inferences about other cases from one instance, obtain other similar attached drawings according to these attached drawings.
In particular, the meter full scale on panel is the embodiment of an A.C. voltmeter, change the i.e. changeable voltmeter of meter full scale
Range.
A kind of photovoltaic generating system voltmeter outline drawing of Fig. 1；
A kind of photovoltaic generating system voltmeter exploded view one of Fig. 2；
A kind of photovoltaic generating system voltmeter exploded view two of Fig. 3；
A kind of photovoltaic generating system voltmeter exploded view three of Fig. 4；
A kind of photovoltaic generating system voltmeter exploded view four of Fig. 5；
Fig. 6 stepper assemblies and voltage preprocessing module connection figure one；
Fig. 7 stepper assemblies and voltage preprocessing module connection figure two；
Fig. 8 stepper assemblies exploded view one；
Fig. 9 stepper assemblies exploded view two.
Label declaration:
1 front frame
11 pillars
2 centers
21 mounting holes
3 rear covers
31 wiring post holes
32 rear cover screw holes
4 panels
41 scales
5 stepper assemblies
50 cable aperture
51 pointers
52 2.4GHz antennas
53 stepper assemblies fixation holes
54 PCB circuit boards
55 arc steps
56 iron core pillar bodies
57 driving gear sets
58 iron-core workpieces
59 excitation wire packets
60 iron-core workpiece mounting holes
6 voltage preprocessing modules
61 lead-in clamps
62 connecting cables
Specific embodiment
Specific embodiments of the present invention will be described below with reference to the accompanying drawings:
A kind of photovoltaic generating system voltmeter, including front frame (1), center (2), rear cover (3), panel (4), stepper motor
Component (5), pointer (51), voltage preprocessing module (6), it is characterised in that:
A kind of photovoltaic generating system voltmeter, by stepper assemblies (5), pointer (51), voltage preprocessing module (6)
It is encapsulated in the space surrounded by front frame (1), center (2) and rear cover (3) with panel (4)；
There is a pillar (11) in the quadrangle of the front frame (1) respectively, and the quadrangle of the center (2) has a mounting hole
(21), the quadrangle of the rear cover (3) has rear cover screw hole (32), and when installation, screw is each passed through rear cover screw hole
(32), the mounting hole (21) of center (2) is connected with the pillar (11) of front frame (1)；
Silk-screen has the indicating graduation (41) of voltmeter on the panel (4)；
One face Surface Mount of PCB circuit board (54) built in the stepper assemblies (5), PCB circuit board (54) is welded with ARM core
Piece, micro-stepping Multi-level microstep chip, wireless signal interface chip, signal router, coordinator chip；PCB circuit board (50)
Another side is equipped with iron-core workpiece (58), excitation wire packet (59), driving gear set (57), the pin weldering of the excitation wire packet (59)
It connects on PCB circuit board (54)；
An external 2.4GHz antenna (52), stepper assemblies on the antenna installation step of the stepper assemblies (5)
(5) it after output shaft stretches out from the shaft step of shell, is socketed pointer (51)；
When the stepper assemblies (5) assemble, PCB circuit board (54) places the circular arc in stepper assemblies (5) shell
Four iron-core workpieces in iron core pillar body (56) insertion iron-core workpiece (58) on step (55), in stepper assemblies (5) shell
In mounting hole (60), six screws are after the shell of stepper assemblies (5), the installation circular hole of PCB circuit board (54), with circle
Arc step (55) is connected；
Electrical connection is realized by connecting cable (62) between the voltage preprocessing module (6) and stepper assemblies (5),
Connecting cable (62) is 4 cored structures, and one is positive pole, and one is power cathode, and in addition two are serial data out line,
The other end of the connecting cable (62) stretched out from voltage preprocessing module (6) passes through the cable aperture (50) on antenna installation step
Afterwards, it is welded on PCB circuit board (54)；
The built-in partial pressure plate of the voltage preprocessing module (6) and voltage sampling circuit, switching power circuit, signal conditioning circuit
With project amount translation circuit, being welded after element and lead-in clamp and connecting cable (62) becomes a rectangle by encapsulating again
Body；
There are three stepper assemblies fixation hole (53) for the bottom surface of the antenna installation step of the stepper assemblies, and screw passes through
Mounting hole (21) on center (2) is connected with stepper assemblies fixation hole (53)；
There are two opening on the rear cover (3) wiring post holes (31), two inputs in the voltage preprocessing module (6) are connect
Terminal (61) stretches out at two wiring post holes (31) of rear cover (3).
The front frame (1), center (2), rear cover (3) are all made of heat-resisting engineering plastics and are molded.
The output shaft of the stepper assemblies (5) is using stainless pin.
The iron-core workpiece (58) uses permalloy material, because permalloy material is compared with there is higher magnetic under low-intensity magnetic field
Conductance.
Stepper assemblies of the present invention use 5V operating voltage, 0.3333 ° of intrinsic step angle, after Multi-level microstep
Step angle can be reduced to 0.0833 °, and the pointer on axis can be made smoothly to move, and Static output torque actual measurement is 4mNm.
It should be pointed out that a kind of photovoltaic generating system voltmeter is started to work in this way: built-in voltage is pre-
Processing module is directly by current voltage measuring value by being converted into stepping required for stepper assemblies after engineering change of variable
Angle serial data；Then, which is converted to the deflection data for driving indicators turn axis by stepper assemblies again, together
When, the voltage data currently indicated is uploaded to local cloud data management by Zigbee WLAN by stepper assemblies
The centralized management of distributed data is completed at center.
The invention has the following beneficial effects:
1. the embodiment of the present invention is that a kind of photovoltaic generating system voltmeter using the design philosophy of system engineering passes through component
And modularized design, data acquisition and data are dexterously shown and separated that mutual electromagnetic interference is minimum, is changed at one stroke
The traditional circuit drives mode of numerical indexes voltmeter and old stuff road tend to flattening in structure, and assembly is simple, to provide
A kind of low cost, the solution that can be mass-produced with a kind of photovoltaic generating system voltmeter convenient for safeguarding.
2. in order to meet the requirement of stepper assemblies long-life, driving gear set uses wear-resisting nylon 66 material.
3. substantive progress of the invention further includes, first is that built-in voltage preprocessing module can directly survey voltage
Magnitude is converted into stepping angle serial data required for stepper assemblies, and handling the interface of its data becomes very simple,
Accomplish that system saves, is whole excellent；Second is that built-in stepper assemblies, which can be converted to the serial data, drives indicators turn axis
Required amount of deflection；Third is that stepper assemblies can also be online by Zigbee wireless local area by the voltage data currently indicated
Cloud data center is passed to, the concentration for being particularly suitable for distribution wind-powered electricity generation, photovoltaic generating system and local Internet of Things, which is patrolled, to be managed, meaning
Unimaginable effect is to have filled up the blank of network digital voltmeter, is particularly suitable for the digitlization of network instrument and high-end instrument
Instruction, application prospect are quite wide.
Above-mentioned is the preferred embodiments of the invention.In this specification, apply specific case to the principle of the present invention and
Embodiment is expounded, and is only used for helping to understand core concept of the present invention, be should not be construed as limiting the invention.Institute
The technical staff in category field understands, is not departing from the spirit and scope of the present invention defined by appended claims,
The various change to made by the present invention in form and details, belongs to protection scope of the present invention.
Claims (4)
1. a kind of photovoltaic generating system voltmeter, including front frame (1), center (2), rear cover (3), panel (4), stepper assemblies
(5), pointer (51), voltage preprocessing module (6), it is characterised in that:
A kind of photovoltaic generating system voltmeter, by stepper assemblies (5), pointer (51), voltage preprocessing module (6)
It is encapsulated in the space surrounded by front frame (1), center (2) and rear cover (3) with panel (4)；
There is a pillar (11) in the quadrangle of the front frame (1) respectively, and the quadrangle of the center (2) has a mounting hole
(21), the quadrangle of the rear cover (3) has rear cover screw hole (32), and when installation, screw is each passed through rear cover screw hole
(32), the mounting hole (21) of center (2) is connected with the pillar (11) of front frame (1)；
Silk-screen has the indicating graduation (41) of voltmeter on the panel (4)；
One face Surface Mount of PCB circuit board (54) built in the stepper assemblies (5), PCB circuit board (54) is welded with ARM core
Piece, micro-stepping Multi-level microstep chip, wireless signal interface chip, signal router, coordinator chip；PCB circuit board (50)
Another side is equipped with iron-core workpiece (58), excitation wire packet (59), driving gear set (57), the pin weldering of the excitation wire packet (59)
It connects on PCB circuit board (54)；
An external 2.4GHz antenna (52), stepper assemblies on the antenna installation step of the stepper assemblies (5)
(5) it after output shaft stretches out from the shaft step of shell, is socketed pointer (51)；
When the stepper assemblies (5) assemble, PCB circuit board (54) places the circular arc in stepper assemblies (5) shell
Four iron-core workpieces in iron core pillar body (56) insertion iron-core workpiece (58) on step (55), in stepper assemblies (5) shell
In mounting hole (60), six screws are after the shell of stepper assemblies (5), the installation circular hole of PCB circuit board (54), with circle
Arc step (55) is connected；
Electrical connection is realized by connecting cable (62) between the voltage preprocessing module (6) and stepper assemblies (5),
Connecting cable (62) is 4 cored structures, and one is positive pole, and one is power cathode, and in addition two are serial data out line,
The other end of the connecting cable (62) stretched out from voltage preprocessing module (6) passes through the cable aperture (50) on antenna installation step
Afterwards, it is welded on PCB circuit board (54)；
The built-in partial pressure plate of the voltage preprocessing module (6) and voltage sampling circuit, switching power circuit, signal conditioning circuit
With project amount translation circuit, being welded after element and lead-in clamp and connecting cable (62) becomes a rectangle by encapsulating again
Body；
There are three stepper assemblies fixation hole (53) for the bottom surface of the antenna installation step of the stepper assemblies, and screw passes through
Mounting hole (21) on center (2) is connected with stepper assemblies fixation hole (53)；
There are two opening on the rear cover (3) wiring post holes (31), two inputs in the voltage preprocessing module (6) are connect
Terminal (61) stretches out at two wiring post holes (31) of rear cover (3).
2. a kind of photovoltaic generating system voltmeter according to claim 1, it is characterised in that: the front frame (1), center
(2), rear cover (3) is all made of heat-resisting engineering plastics and is molded.
3. a kind of photovoltaic generating system voltmeter according to claim 1, it is characterised in that: the stepper assemblies
(5) output shaft is using stainless pin.
4. a kind of photovoltaic generating system voltmeter according to claim 1, it is characterised in that: the iron-core workpiece (58) is adopted
Use permalloy material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577800.4A CN109596882A (en) | 2018-12-24 | 2018-12-24 | A kind of photovoltaic generating system voltmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811577800.4A CN109596882A (en) | 2018-12-24 | 2018-12-24 | A kind of photovoltaic generating system voltmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109596882A true CN109596882A (en) | 2019-04-09 |
Family
ID=65963260
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811577800.4A Pending CN109596882A (en) | 2018-12-24 | 2018-12-24 | A kind of photovoltaic generating system voltmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109596882A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728926A (en) * | 2008-10-14 | 2010-06-09 | 彭希南 | Micro step motor with double driving shafts |
| CN201548613U (en) * | 2009-12-08 | 2010-08-11 | 彭希南 | Universal digital DC voltmeter |
| CN201562009U (en) * | 2009-12-08 | 2010-08-25 | 彭希南 | Universal panel type digital alternating current voltmeter |
| CN201569700U (en) * | 2010-01-15 | 2010-09-01 | 管于球 | Panel insertion type digital DC ammeter |
| CN103645376A (en) * | 2013-11-15 | 2014-03-19 | 益和电气集团股份有限公司 | Digital current voltmeter of wireless transmission signal |
| CN204028200U (en) * | 2014-07-22 | 2014-12-17 | 温州市天齐电器有限公司 | A kind of indicator type current meter |
| CN204832319U (en) * | 2015-08-25 | 2015-12-02 | 薛纯良 | Multi -functional pointer ampere meter |
-
2018
- 2018-12-24 CN CN201811577800.4A patent/CN109596882A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101728926A (en) * | 2008-10-14 | 2010-06-09 | 彭希南 | Micro step motor with double driving shafts |
| CN201548613U (en) * | 2009-12-08 | 2010-08-11 | 彭希南 | Universal digital DC voltmeter |
| CN201562009U (en) * | 2009-12-08 | 2010-08-25 | 彭希南 | Universal panel type digital alternating current voltmeter |
| CN201569700U (en) * | 2010-01-15 | 2010-09-01 | 管于球 | Panel insertion type digital DC ammeter |
| CN103645376A (en) * | 2013-11-15 | 2014-03-19 | 益和电气集团股份有限公司 | Digital current voltmeter of wireless transmission signal |
| CN204028200U (en) * | 2014-07-22 | 2014-12-17 | 温州市天齐电器有限公司 | A kind of indicator type current meter |
| CN204832319U (en) * | 2015-08-25 | 2015-12-02 | 薛纯良 | Multi -functional pointer ampere meter |
Non-Patent Citations (1)
| Title |
|---|
| 任益芳等: "《感知层组建综合实训》", 31 May 2013 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109507475A (en) | Wind power plant numerical indexes formula ammeter based on Zigbee WLAN | |
| CN1793987A (en) | High voltage signal sampling method capable of adapting metering measuring or protection requirement | |
| CN109596882A (en) | A kind of photovoltaic generating system voltmeter | |
| CN102393497A (en) | Portable polarity calibrator for electronic mutual inductor | |
| CN201697947U (en) | Multi-user centralized electric energy meter | |
| WO2017198644A1 (en) | Inverter having a revenue grade meter | |
| CN201298307Y (en) | Ampere force and magnetic induction intensity exploring instrument | |
| CN201562009U (en) | Universal panel type digital alternating current voltmeter | |
| CN202256655U (en) | Portable-type electronic transformer polarity check gauge | |
| CN106249082B (en) | Generating set control panel test device | |
| CN206281909U (en) | Based on bus type I/O cell board intelligent test device | |
| CN210037943U (en) | Combined electronic sensor | |
| CN114063000A (en) | Direct current ammeter calibration device and calibration method thereof | |
| CN2852143Y (en) | High voltage signal sampling device adapted to metering, measuring or protection demands | |
| CN108878115B (en) | 10kV column-mounted high-voltage integrated metering device | |
| CN111257632A (en) | Intelligent electric quantity acquisition instrument based on Internet of things | |
| CN207636647U (en) | A kind of Intelligent electric-energy metering case compact-sized, sealing performance is excellent | |
| CN110836987A (en) | Manganese-copper shunt of three-phase intelligent electric energy meter and application thereof | |
| CN112730928B (en) | Intelligent ammeter with built-in anti-power frequency magnetic field relay and anti-magnetic method | |
| CN2551977Y (en) | Electronic water-meter without replacing cell | |
| CN218995652U (en) | Comprehensive tester for variable frequency transformer | |
| CN218974537U (en) | Test power supply device for submersible permanent magnet synchronous motor | |
| Rajamani et al. | Microcontroller Based Smart Coil Winder System | |
| CN201489049U (en) | Digital alternating voltage-current combination meter | |
| CN201549366U (en) | Direct current component preventing current transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190409 |
|
| WD01 | Invention patent application deemed withdrawn after publication |