CN206759446U - A kind of electric energy meter bandwidth carrier communication unit test system - Google Patents
A kind of electric energy meter bandwidth carrier communication unit test system Download PDFInfo
- Publication number
- CN206759446U CN206759446U CN201720536015.9U CN201720536015U CN206759446U CN 206759446 U CN206759446 U CN 206759446U CN 201720536015 U CN201720536015 U CN 201720536015U CN 206759446 U CN206759446 U CN 206759446U
- Authority
- CN
- China
- Prior art keywords
- pin
- power
- unit
- carrier communication
- interface
- 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
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The utility model discloses a kind of electric energy meter bandwidth carrier communication unit test system, including three phase network interface, power interface unit, carrier wave detection control unit, MCU units, the push-button unit being connected with MCU units and the display screen being connected with MCU and power interface unit, wherein MCU units are connected with carrier wave detection control unit, three phase network interface is connected with power interface unit and carrier wave detection control unit respectively, and power interface unit is also connected with MCU units and display screen.The utility model can relate to carrier communication field, can batch detection ammeter bandwidth carrier communication unit, have that detection efficiency is high, the low advantage of testing cost.
Description
Technical field
It the utility model is related to carrier communication field, more particularly to a kind of test of electric energy meter bandwidth carrier communication unit
System.
Background technology
In the intelligent meter data recording system of power network, intelligent electric meter is communicated by remote communication unit and main control end.With
The development of technology, the telecommunication mode of electric energy meter are gradually changed into PLC (electric power from RS485 (serial 485 mode communication) mode
Line carrier communication) mode.PLC modes include narrowband carrier and bandwidth carrier, based on early stage electric energy meter is communicated with narrowband carrier, but
Narrowband carrier communication is had a great influence by power line load characteristic, thus the stability of communication channel is bad.In recent years, power network is public
Information-based, intelligent reform is carried out by department, the also more and more higher of the requirement to remote meter reading, high-speed wideband carrier communication because bandwidth,
The advantages that message transmission rate height, strong antijamming capability, good stability, progressively substitutes narrowband carrier communication, has obtained more and more wider
General application, the demand of bandwidth carrier communication quickly increase, it is therefore desirable to are to broadband power line carrier communication Elementary Function
It is no to be normally carried out testing.
Test to electric energy meter bandwidth carrier unit at present uses power concentrator or using copy controller combination PC substantially
Machine carries out test two ways, and concentrator operating efficiency is relatively low, and the mode cost of copy controller combination PC is higher, when need batch
When testing electric energy meter bandwidth carrier unit, cost is higher.
Utility model content
The utility model purpose is to provide a kind of electric energy meter bandwidth carrier communication unit test system, examined with solving batch
Efficiency is low when whether survey electric energy meter bandwidth carrier communication unit function is normal, the high technical problem of cost.
To achieve the above object, the utility model provides a kind of electric energy meter bandwidth carrier communication unit test system, bag
Include three phase network interface, power interface unit, carrier wave detection control unit, MCU units, the push-button unit being connected with MCU units
The display screen being connected with MCU and power interface unit, wherein MCU units are connected with carrier wave detection control unit, three-phase electricity
Network interface is connected with power interface unit and carrier wave detection control unit respectively, power interface unit also with MCU units and aobvious
Display screen connects.
Further, power interface unit includes dc power interface, AC/DC power conversion units and DC/DC power supplys turn
Unit is changed, AC/DC power conversion units are the AC/DC power conversion units that 220V AC powers are converted to 12V DC power supply,
DC/DC power conversion units are by the DC/DC power conversion units that 12V DC Power convert is 3.3V dc sources, AC/DC electricity
The output end of source converting unit is connected with the input of DC/DC power conversion units.
Further, test system also includes the usb circuit and/or RJ45 nets for being connected to carrier wave detection control unit
Mouth circuit.
Further, the pin 1 of the RJ1 chips of RJ45 network port circuits is made as TX+ ends, pin 2 as TX- ends, pin 3
For RX+ ends, pin 6 is as RX- ends, and pin 4 is connected after being connected with pin 5 with resistance R1 one end, after pin 7 is connected with pin 8
It is connected with resistance R2 one end, the resistance R1 other ends are connected after being connected with the resistance R2 other ends with electric capacity C3 one end, and electric capacity C3 is another
End ground connection.
Further, the chip U4 of usb circuit pin 1 is grounded, and chip U4 pin 2 and resistance R10 one end connect
Connect, the resistance R10 other ends are as USB- ends；Chip U4 pin 3 is connected with resistance R11 one end, resistance R11 other end conducts
USB+ ends；Chip U4 pin 4 connects power supply；USB interface J1 pin 2 is connected with chip U4 pin 2, and USB interface J1's draws
Pin 3 is connected with chip U4 pin 3；USB interface J1 pin 4 is connected with inductance L5 one end, inductance L5 other ends ground connection；USB
Interface J1 pin 1 is connected with inductance L4 one end, and the inductance L4 other ends are connected with chip U4 pin 4.
The utility model has the advantages that：
1st, using direct current with exchange while or the method for selecting a power supply, can more increase stability and the flexibility of system.
2nd, usb circuit, RJ45 network port circuits have been reserved in test system so that the system both can independently enter line width
Band carrier communication unit testing, can coordinate host computer to be tested, can be applicable a variety of environment, make test mode cleverer again
It is living, more convenient operation.
3rd, it is connected on using by single-phase electric energy meter bandwidth carrier communication unit in any one phase of three phase network, realization is surveyed simultaneously
Multiple three-phase and four-line electric energy meter bandwidth carrier communication unit and/or single-phase electric energy meter bandwidth carrier communication units are tried, make the system
Large batch of a variety of intelligent electric meter bandwidth carrier communication units can be rapidly detected simultaneously, reduce testing cost, and improve
Operating efficiency.
4th, available for single-phase power network, it can also be used to three phase network, make systematic difference scope wider.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to accompanying drawings, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.In accompanying drawing
In：
Fig. 1 is the structure chart of the electric energy meter bandwidth carrier communication unit test system of the utility model preferred embodiment；
Fig. 2 is the AC/DC power conversion unit circuit diagrams of the utility model preferred embodiment；
Fig. 3 is the DC/DC power conversion unit circuit diagrams of the utility model preferred embodiment；
Fig. 4 is the usb circuit and RJ45 interface circuit figures of the utility model preferred embodiment；
Fig. 5 is the circuit diagram of the carrier wave detection control unit of the utility model preferred embodiment, push-button unit and display screen；
Fig. 6 is the MCU cellular construction figures of the utility model preferred embodiment.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be by right
It is required that the multitude of different ways for limiting and covering is implemented.
Referring to Fig. 1, the utility model provides a kind of electric energy meter bandwidth carrier communication unit test system, including three-phase electricity
Network interface 1, power interface unit 2, carrier wave detection control unit 3, MCU units 4, the push-button unit 5 being connected with MCU units 4 and
The display screen 6 being connected with MCU and power interface unit 2, wherein MCU units 4 are connected with carrier wave detection control unit 3, three-phase
Grid interface 1 is connected with power interface unit 2 and carrier wave detection control unit 3 respectively, and power interface unit 2 is also mono- with MCU
Member 4 and display screen 6 connect.Referring to Fig. 5 and Fig. 6, MCU units 4 use R7FOC902B2 processors, it is possible to increase processing speed,
And power consumption is reduced, pin 31 (P00_TxD1), pin 30 (P01_RxD1), pin 29 (P20) and the pin 28 of MCU units 4
(P21) SW1, SW2, SW3 and SW4 respectively with push-button unit 5 are connected, and correspond to test respectively, upward, downward, return four is pressed
Key.It is single that the pin 22 (P12/SO00 TxD0) and pin 23 (P11/SI00 RxD0) of MCU units 4 detect control with carrier wave respectively
The pin 11 and pin 12 of member 3 connect.Pin 19 (P15//SCK20), pin 20 (P14/RxD2) and the pin 21 of MCU units 4
(P13/TxD2/SO20) it is connected respectively with the chip U5 of display screen 6 pin 7, pin 6 and pin 5.Electric energy meter to be measured is connect
After entering in the three phase network being connected with the utility model three phase network interface 1, after the test button for pushing button unit 5, MCU is mono-
Member 4 will test instruction by serial ports and be sent to carrier wave detection control unit 3, carrier wave detection control unit 3 according to the instruction received,
Corresponding broadband carrier signal is generated, includes destination address in carrier signal, is connected on by three phase network interface 1 and equally electricity
Online electric energy meter bandwidth carrier communication unit is communicated and functional test, while shows that dependence test is believed on display screen 6
Breath, such as testing progress, the non-normal work of the communication unit of which address etc., if display information can not in one page of display screen 6
When showing completely, downward, the upward button that can pass through push-button unit 5 carries out page turning.It is first single by test when need to be tested again
The return button of member returns to setup test state, after being ready to, starts to test by feeler switch.In the present embodiment, display screen 6 is
DMG48270M050 liquid crystal displays, carrier wave detection control unit 3 select HYM7700 modules.
Further, dc power interface, AC/DC power conversion units are included referring to Fig. 2 and Fig. 3, power interface unit 2
With DC/DC power conversion units, AC/DC power conversion units are the AC/DC that 220V AC powers are converted to 12V DC power supply
Power conversion unit, DC/DC power conversion units are to turn the DC/DC power supplys that 12V DC Power convert is 3.3V dc sources
Unit is changed, the output end of AC/DC power conversion units is connected with the input of DC/DC power conversion units.Carrier wave detection control
Unit 3 should use direct current 12V and direct current 3.3V two-way power supply to power, and MCU units 4 use 3.3V single channel power supplys with display screen 6
Power supply.Therefore, two kinds of power supply modes can be taken：From a wherein phase power taking for three phase network interface 1 when the first is test, pass through
Alternating current is converted to 12V DC electricity output by AC/DC power conversion units, while again by DC/DC power conversion units by 12V
Be converted to 3.3V；It is for second using directly inputting 12V DC power supply, while by DC/DC power conversion units by 12V voltages
Be converted to 3.3V voltages so that equipment runs well.Direct current power taking is than the wherein phase power taking step from three phase network interface 1 more
Succinctly, make operating efficiency higher, can be as the additional project or alternative of power supply.Using direct current with exchange while or select one
The method of power supply, it can more increase stability and the flexibility of system.
Further, referring to Fig. 4, test system also includes the usb circuit 7 for being connected to carrier wave detection control unit 3
And/or RJ45 network port circuits 8.Usb circuit 7, the spare interface that RJ45 network port circuits 8 are the system, for controlling Pc
Machine is connected.Because display screen 6 is limited because of interface, it is impossible to shows detailed test information.It is more more intuitive when needing to check
When testing information, usb circuit 7 or the one end of RJ45 network port circuits 8 can be connected to carrier wave detection control unit 3, it is another
End is connected on Pc machines, is checked by Pc machine displays.Tested further, it is also possible to start testing process by Pc machines.When
When PC starts test, carrier wave detection control unit is sent an instruction to by usb circuit 7 or RJ45 network port circuits 8
3, carrier wave detection control unit 3 generates corresponding broadband carrier signal, carrier signal includes targetedly according to the instruction received
Location, is communicated and functional test by three phase network interface 1 and unit under test.Outside system reserve usb circuit 7,
RJ45 network port circuits 8 so that the system both can independently carry out bandwidth carrier communication unit test, host computer can be coordinated to enter again
Row test, can be applicable a variety of environment, make test mode more flexible, more convenient operation.
Further, the pin 1 of the RJ1 chips of RJ45 network port circuits 8 is as TX+ ends, and pin 2 is as TX- ends, pin 3
As RX+ ends, pin 6 is connected as RX- ends, pin 4 after being connected with pin 5 with resistance R1 one end, and pin 7 is connected with pin 8
It is connected afterwards with resistance R2 one end, the resistance R1 other ends are connected after being connected with the resistance R2 other ends with electric capacity C3 one end, and electric capacity C3 is another
One end is grounded.RJ45 network port circuits 8 can coordinate host computer to be tested.
Further, the chip U4 of usb circuit 7 pin 1 is grounded, and chip U4 pin 2 and resistance R10 one end connect
Connect, the resistance R10 other ends are as USB- ends；Chip U4 pin 3 is connected with resistance R11 one end, resistance R11 other end conducts
USB+ ends；Chip U4 pin 4 connects power supply；USB interface J1 pin 2 is connected with chip U4 pin 2, and USB interface J1's draws
Pin 3 is connected with chip U4 pin 3；USB interface J1 pin 4 is connected with inductance L5 one end, inductance L5 other ends ground connection；USB
Interface J1 pin 1 is connected with inductance L4 one end, and the inductance L4 other ends are connected with chip U4 pin 4.Usb circuit 7 with
Interface protection chip is connected, and interface protection chip is PSR05 chips, and excessively stream can be prevented to damage caused by usb circuit 7
Wound.
Electric energy meter bandwidth carrier communication unit to be measured both can be three-phase electric energy meter bandwidth carrier communication unit or
Single-phase electric energy meter bandwidth carrier communication unit, electric energy meter bandwidth carrier communication unit to be measured can be connected on any one phase of three phase network
On, it can connect up to 253 unit under tests per phase while be tested.Three are connected on using by single-phase electric meter bandwidth carrier communication unit
In any one phase of phase power network, realize and test multiple three-phase electric energy meter bandwidth carrier communication units and/or single-phase electric energy meter simultaneously
Bandwidth carrier communication unit, enable the system to enough while rapidly detect large batch of a variety of intelligent electric meter bandwidth carrier communication lists
Member, testing cost is reduced, and improve operating efficiency.
When power network only has it is single-phase when, the zero line of single phase poaer supply connects the N-terminal of three phase network interface 1, and the live wire of single phase poaer supply connects
The C-terminal of three phase network interface 1, can be communicated and functional test to the communication unit on power network.When power network is three-phase, three-phase
The line of power network connects one to one with three phase network interface 1.The system is so set to cannot be only used for single-phase power network, it can also be used to three
Phase power network, make systematic difference scope wider.
To sum up, the utility model using direct current with exchange while or the method for selecting a power supply, can more increase the steady of system
Qualitative and flexibility；Usb circuit and RJ45 network port circuits have been reserved in test system so that the system both can independently be entered
Line width band carrier communication unit testing, can coordinate host computer to be tested, can be applicable a variety of environment, make test mode more again
Flexibly, more convenient operation；It is connected in any one phase of three phase network, realizes using by single-phase electric energy meter bandwidth carrier communication unit
Multiple three-phase and four-line electric energy meter bandwidth carrier communication unit and/or single-phase electric energy meter bandwidth carrier communication units are tested simultaneously, are made
The system can rapidly detect large batch of a variety of intelligent electric meter bandwidth carrier communication units simultaneously, reduce testing cost,
And improve operating efficiency；Available for single-phase power network, it can also be used to three phase network, make systematic difference scope wider.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (5)
1. a kind of electric energy meter bandwidth carrier communication unit test system, it is characterised in that including three phase network interface, power interface
Unit, carrier wave detection control unit, MCU units, the push-button unit being connected with the MCU units and with the MCU units and
The display screen of the power interface unit connection, wherein the MCU units are connected with the carrier wave detection control unit, described three
Phase grid interface is connected with the power interface unit and the carrier wave detection control unit respectively, the power interface unit
Also it is connected with the MCU units and the display screen.
A kind of 2. electric energy meter bandwidth carrier communication unit test system according to claim 1, it is characterised in that the electricity
Source interface unit includes dc power interface, AC/DC power conversion units and DC/DC power conversion units, the AC/DC power supplys
Converting unit is that 220V AC powers are converted to the AC/DC power conversion units of 12V DC power supply, and the DC/DC power supplys turn
It is by the DC/DC power conversion units that 12V DC Power convert is 3.3V dc sources, AC/DC power conversion units to change unit
Output end be connected with the input of DC/DC power conversion units.
A kind of 3. electric energy meter bandwidth carrier communication unit test system according to claim 1 or 2, it is characterised in that institute
State usb circuit and/or RJ45 network port circuits that test system also includes being connected in the carrier wave detection control unit.
4. a kind of electric energy meter bandwidth carrier communication unit test system according to claim 3, it is characterised in that described
The pin 1 of the RJ1 chips of RJ45 network port circuits is as TX+ ends, and pin 2 is as TX- ends, and pin 3 is as RX+ ends, the conduct of pin 6
RX- ends, pin 4 are connected after being connected with pin 5 with resistance R1 one end, and pin 7 is connected after being connected with pin 8 with resistance R2 one end,
The resistance R1 other ends are connected after being connected with the resistance R2 other ends with electric capacity C3 one end, electric capacity C3 other ends ground connection.
5. a kind of electric energy meter bandwidth carrier communication unit test system according to claim 4, it is characterised in that described
The chip U4 of usb circuit pin 1 is grounded, and chip U4 pin 2 is connected with resistance R10 one end, and the resistance R10 other ends are made
For USB- ends；Chip U4 pin 3 is connected with resistance R11 one end, and the resistance R11 other ends are as USB+ ends；Chip U4 pin 4
Connect power supply；USB interface J1 pin 2 is connected with chip U4 pin 2, and USB interface J1 pin 3 connects with chip U4 pin 3
Connect；USB interface J1 pin 4 is connected with inductance L5 one end, inductance L5 other ends ground connection；USB interface J1 pin 1 and inductance L4
One end is connected, and the inductance L4 other ends are connected with chip U4 pin 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720536015.9U CN206759446U (en) | 2017-05-15 | 2017-05-15 | A kind of electric energy meter bandwidth carrier communication unit test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720536015.9U CN206759446U (en) | 2017-05-15 | 2017-05-15 | A kind of electric energy meter bandwidth carrier communication unit test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206759446U true CN206759446U (en) | 2017-12-15 |
Family
ID=60617000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720536015.9U Active CN206759446U (en) | 2017-05-15 | 2017-05-15 | A kind of electric energy meter bandwidth carrier communication unit test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206759446U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895870A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Soil humidity sensor based on power line carrier communication |
| CN110895872A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Soil pH value sensor based on power line carrier communication |
| CN110895871A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Ammonia sensor based on power line carrier communication |
| CN110910624A (en) * | 2018-09-17 | 2020-03-24 | 南京南大天域智能科技有限公司 | Carbon dioxide sensor based on power line carrier communication |
-
2017
- 2017-05-15 CN CN201720536015.9U patent/CN206759446U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110895870A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Soil humidity sensor based on power line carrier communication |
| CN110895872A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Soil pH value sensor based on power line carrier communication |
| CN110895871A (en) * | 2018-09-13 | 2020-03-20 | 南京南大天域智能科技有限公司 | Ammonia sensor based on power line carrier communication |
| CN110910624A (en) * | 2018-09-17 | 2020-03-24 | 南京南大天域智能科技有限公司 | Carbon dioxide sensor based on power line carrier communication |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206759446U (en) | A kind of electric energy meter bandwidth carrier communication unit test system | |
| CN201654106U (en) | Multiple-group electric-power measurement transmission device with full-time and multiplex time-sharing measurement | |
| CN107678960A (en) | Intelligent electric energy meter software Black-box Testing system and method | |
| CN108616604A (en) | A kind of intelligent electric energy meter supplements repeating installation, ammeter communication system and the means of communication with money | |
| CN201732472U (en) | Automatic testing device of concentrated electric energy meter reading equipment | |
| CN103941198A (en) | Working method of embedding-based power module general testing platform | |
| CN204065240U (en) | A kind of dry reactor performance test circuit and device | |
| CN207081788U (en) | A kind of multifunctional low-voltage taiwan area identifier | |
| US20140035760A1 (en) | Watt-hour meter and method of detection of abnormal status thereof | |
| CN111147324A (en) | Multi-dimensional integrated detection and evaluation system | |
| CN107167686A (en) | A kind of Intelligent substation merging unit tests corollary apparatus | |
| CN107290613A (en) | A kind of multifunctional low-voltage platform area identifier | |
| CN207457341U (en) | Three-phase and four-line RF intelligent electric meters | |
| CN110212945A (en) | Power circuit method for detecting connectivity, apparatus and system | |
| CN203178469U (en) | Portable transmitter verification meter | |
| CN108257372A (en) | Self-fault diagnosis acquisition system | |
| CN107884653A (en) | The power utility check equipment of extensible modules | |
| CN204009048U (en) | Intelligent station 3/2 wiring bus reactive power tester based on traditional mutual inductor | |
| CN207460316U (en) | A kind of video camera and elevator monitoring system with floor display function | |
| CN105699934B (en) | A kind of anti-radio near-field thermal radiation performance testing device of electric energy meter | |
| CN206302017U (en) | A kind of smart jack and smart machine | |
| CN103368610A (en) | Intelligent distribution room networking instrument for power system | |
| CN201600440U (en) | Comprehensive energy efficiency quality test device | |
| CN206002628U (en) | A kind of line connector equipment | |
| CN104200635A (en) | Wireless switch with function of electrical quantity metering and acquisition method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |