CN106327851A - Electricity utilization information acquiring system, deconcentrator thereof and communication fault detecting method - Google Patents
Electricity utilization information acquiring system, deconcentrator thereof and communication fault detecting method Download PDFInfo
- Publication number
- CN106327851A CN106327851A CN201610802577.3A CN201610802577A CN106327851A CN 106327851 A CN106327851 A CN 106327851A CN 201610802577 A CN201610802577 A CN 201610802577A CN 106327851 A CN106327851 A CN 106327851A
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- deconcentrator
- microprocessor
- power information
- communication
- interface
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C25/00—Arrangements for preventing or correcting errors; Monitoring arrangements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
The invention provides an electricity utilization information acquiring system, a deconcentrator thereof and a communication fault detecting method. The deconcentrator comprises a microprocessor, an RS485 interface circuit, a plurality of connecting switches, a connecting port and a plurality of meter position interfaces, wherein the RS485 interface circuit and the connecting switches are connected with the microprocessor; the connecting port is connected with the RS485 interface circuit; and the meter position interfaces are respectively in one-to-one connection with the connecting switches. When communication of an RS485 network is normal, the connecting switches are in a connection state, the connecting port is connected with the meter position interfaces to form an RS485 bus, and the deconcentrator does not need to consume electric energy; and when communication of the RS485 network is abnormal, faults can be detected by the deconcentrator through a power supply provided by the outside, and at the moment, the connecting switches are controlled by the microprocessor to be in a connection/disconnection state. Communication fault removal efficiency of the electricity utilization information acquiring system can be greatly improved.
Description
Technical field
The present invention relates to power accessories, particularly for the RS485 network service of power information acquisition system.
Background technology
In the power information acquisition system of power system, power information collecting device (harvester or concentrator) and ammeter it
Between communication mainly have a Three models: power carrier, micropower small wireless and RS485 bus.Wherein, RS485 mode bus becomes
This is minimum, and communicate minimum protected from environmental, is widely applied.But, because RS485 mode bus be in bus also
Connecing the ammeter needing communication, see Fig. 1, in existing this power information acquisition system 10a, several ammeters 2 are and use
The RS485 communication network 3 of same RS485 bus composition realizes communicating with power information collecting device 1.Once, have arbitrary
RS485 interface on individual ammeter 2 occurs that locked or input impedance is less than certain value, will make to be connected to this RS485 and lead to
All ammeters 2 on communication network 3 cannot communicate with power information collecting device 1, causes RS485 communication paralysis.Due to one
Ammeter 2 quantity connected on individual RS485 communication network 3 is the most, and most can reach 128, therefore in troubleshooting,
The difficulty of the ammeter 2 of the appearance R485 fault judge, positioned on a RS485 communication network 3 and workload are big, cause communication
Troubleshooting efficiency is low.
Summary of the invention
The technical problem to be solved in the present invention is, drawbacks described above based on prior art, proposes a kind of deconcentrator, it is possible to
It is greatly improved the communication troubleshooting efficiency for power information acquisition system.
The technical solution adopted for the present invention to solve the technical problems is: provide a kind of deconcentrator, comprising: micro-process
Device, the RS485 interface circuit being connected with this microprocessor and some connecting valves, the connection being connected with this RS485 interface circuit
Mouth and the some epi-position interfaces being connected one by one respectively with these connecting valves；Wherein, when RS485 network service is normal, this
A little connecting valves are in connection status, and this connecting port and these epi-position interfaces connect into a RS485 bus, and this deconcentrator is not
Need to consume electric energy；When RS485 network service exception, this deconcentrator can carry out fault inspection by the power supply that outside provides
Surveying, now these connecting valves are controllable by this microprocessor and are in connected/disconnected state.
In certain embodiments, this deconcentrator also includes: the A/D sample circuit being connected with this microprocessor, is used for detecting
Voltage difference in two communication terminal of this RS485 interface circuit.
In certain embodiments, this deconcentrator also includes: the channel switching matched with this A/D sample circuit, and being used for will
Voltage in one of two communication terminal of this RS485 interface circuit sends this A/D sample circuit to, and this A/D sample circuit is again
Sampled voltage is flowed to this microprocessor.
In certain embodiments, this deconcentrator also includes: the subtending port being connected with this RS485 interface circuit, is used for expanding
The quantity of exhibition RS485 interface.
In certain embodiments, this deconcentrator also includes: the some epi-position display lamps being connected with this microprocessor, Mei Gebiao
Position display lamp for a communication leg corresponding to one connecting valve of instruction and an epi-position interface with matching is
No normally.
In certain embodiments, this connecting valve is relay.
The technical solution adopted for the present invention to solve the technical problems is still: provide a kind of power information acquisition system, bag
Include power information collecting device and the some ammeters being connected with this power information collecting device by RS485 communication network, should
RS485 communication network includes deconcentrator as above, wherein, the RS485 communication interface of these ammeters respectively with on deconcentrator
These epi-position interfaces be connected one by one, when RS485 network service is normal, the RS485 of this power information collecting device communication connects
Mouth is connected with the connecting port on deconcentrator.
In certain embodiments, when RS485 network service exception, the connecting port on this deconcentrator and a handheld terminal phase
Even, to carry out fault detect.
The technical solution adopted for the present invention to solve the technical problems is still: provide a kind of communication fault detection method, its
Use deconcentrator as above；Connecting port and a handheld terminal of this deconcentrator are connected so that this microprocessor can be with
This handheld terminal is communicated to connect by RS485, and makes the internal circuit of this deconcentrator obtain power supply supply from this handheld terminal；Will
Some ammeters are connected on these epi-position interfaces the most one by one；Handheld terminal is made to send detection instruction to the micro-place within deconcentrator
Reason device so that internal microprocessor performs different detection modes, enters under different bus link modes from these equipment
Row point-to-point communication detects.
In certain embodiments, described this handheld terminal transmission detection that makes instructs to the microprocessor within deconcentrator,
The microprocessor making inside performs different this processes of detection mode and includes: said the word to this micro-process by this handheld terminal
Device, the connecting valve making this microprocessor control to specify is in connection status and carries out fault detect.
In certain embodiments, described this handheld terminal transmission detection that makes instructs to the microprocessor within deconcentrator,
The microprocessor making inside performs different this processes of detection mode and also includes: be in connection shape at the connecting valve specified
During state, the voltage in two communication terminal of this RS485 interface circuit is detected by this microprocessor.
The beneficial effects of the present invention is, by the RS485 interface using microprocessor dexterously, be connected with this microprocessor
Circuit and the connecting valve being controlled by this microprocessor, constitute a deconcentrator, can be when RS485 network service is normal, nothing
Need power supply, make RS485 communication network and a RS485 bus suitable, when RS485 network service exception, enter detection state,
Make RS485 communication network be changed to different connection status automatically to detect, it is possible to be greatly improved power information acquisition system
Communication troubleshooting efficiency.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing:
Fig. 1 is the block diagram of existing power information acquisition system.
Fig. 2 is the block diagram of the power information acquisition system of the present invention.
Fig. 3 is the block diagram of the deconcentrator of the present invention.
Fig. 4 is the flow chart of the communication network failure detection of the present invention.
Wherein, description of reference numerals is as follows: 10,10a power information acquisition system 1 power information collecting device 2 electricity
Table 3,3a RS485 communication network 31 deconcentrator 32 downstream interface 33 Upstream Interface 37 connecting port 38 subtending port
4 handheld terminal 301 microprocessor 302 RS485 interface circuit 303 AD, 304 channel switching 305 dial-ups of sampling are opened
Close 306 system instruction 307,308 RS485 interface 310 connecting valve 320 epi-position interface 330 display lamps 350
RS485 bus 360 power bus.
Detailed description of the invention
In conjunction with accompanying drawing, presently preferred embodiments of the present invention is elaborated.
See the block diagram of the power information acquisition system that Fig. 2, Fig. 2 are the present invention.The present invention proposes a kind of power information and adopts
Collecting system 10, comprising: power information collecting device 1, some ammeters 2 and for by this power information collecting device 1 and this
The RS485 communication network 3 that a little ammeter 2 communication connections are got up.This power information collecting device 1 can be harvester, it is also possible to be
Concentrator.
This RS485 communication network 3 specifically includes deconcentrator 31, for by this deconcentrator 31 and this power information collecting device
Upstream Interface 33 that 1 couples together, for some downstream interfaces 32 that this deconcentrator 31 is coupled together with these ammeters 2, use
In the connecting port 37 being connected with handheld terminal 4 external equipment such as grade and for the subtending port being connected with next deconcentrator 31
38.Wherein, each ammeter 2 is connected with this deconcentrator 31 by an exclusive downstream interface 32.In the present embodiment, this separated time
The connecting port 37 of device 31 is connected with handheld terminal 4, it is possible to obtains power supply supply from this handheld terminal 4, and leads to this handheld terminal 4
Letter connects.It is noted that this deconcentrator 31 coordinates with this handheld terminal 4, this RS485 communication network can be realized efficiently
The communication failure investigation of 3, this point can be described in detail below.
See the block diagram of the deconcentrator that Fig. 3, Fig. 3 are the present invention.The present invention proposes a kind of deconcentrator 31, comprising: micro-place
Reason device 301, RS485 interface circuit 302, AD sampling 303, channel switching 304, toggle switch 305, system instruction 306, RS485
The some epi-position display lamps 309 of interface 307,308, some connecting valves 310, some epi-position interfaces 320, RS485 bus 350 and
Power bus 360.Wherein, RS485 bus 350 and power bus 360 are connected with RS485 interface 307,308, it is possible to outside
Equipment carries out RS485 communication connection, and obtains power supply supply from external equipment.In the present embodiment, this connecting valve 310 is selected
Relay realizes.
Wherein, microprocessor 301 is core.Microprocessor 301 is by serial communication port UART and this RS485 interface circuit
302 be connected, can via the RS485 bus 350 being connected with this RS485 interface circuit 302 be connected to RS485 interface 307,308
On RS485 communication apparatus communication connect.This RS485 communication equipment can be aforesaid power information collecting device 1, hand-held end
End 4 or another deconcentrator 31.In conjunction with Fig. 2, in the present embodiment, this deconcentrator 31 uses telecommunications by Upstream Interface 33 with this
Breath collecting device 1 is connected, it is to be understood that this Upstream Interface 33 is in this RS485 interface 307,308.This separated time
Device 31 is connected with this handheld terminal 1 by connecting port 37, it is to be understood that this connecting port 37 is this RS485 interface 307,308
In one, similarly, this subtending port 38 is in this RS485 interface 307,308.In other words, power information collection
Equipment 1 and handheld terminal 4 can same with in this RS485 interface 307,308 of multiplexing.
This AD sampling 303 is responsible for sampling the voltage on A, B line of this RS485 bus 350, and it is micro-to deliver to this respectively
AD conversion port on processor 301.This channel switching 304 is arranged on A, B line and this AD sampling 303 of this RS485 bus 350
Input between, this channel switching 304 is controlled by this microprocessor 301, can be optionally by this RS485 bus 350
Voltage on A, B line delivers to the input of this AD sampling 303, then delivers to this microprocessor via the outfan of this AD sampling 303
AD conversion port on 301.
This toggle switch 305 is connected with this microprocessor 301, for configuring this microprocessor 301.This system refers to
Show that 306 can provide the duty of this microprocessor 301 to indicate, such as: being used for indicating power supply electrifying, test is carried out, and survey
The state such as try.
Each epi-position display lamp 309, for one ammeter 2 of instruction and a downstream interface 32 being connected with this ammeter 2
Communication line is the most normal.Each epi-position connecting valve 310 is controlled by this microprocessor 301 and connects/disconnect, and correspondingly can
Determine whether a downstream interface 32 place communication line corresponding with particular meter 2 connects with this RS485 bus 350/disconnect.
Each epi-position interface 320 is connected with an epi-position connecting valve 310, and each epi-position interface 320 is corresponding to an aforesaid downstream
Interface 32.
It is understood that the structure of RS485 bus pressed by this deconcentrator 31, the RS485 bus as trunk can be divided into
350 and some epi-position interfaces 320 as branch, such that it is able to by this power information collecting device 1/ handheld terminal 4 and these
Ammeter 2 connects into star-shaped network structure.In the present embodiment, the number of epi-position interface 320 is 16, and this deconcentrator 31 can be corresponding
Connect 16 ammeters 2；The additional microprocessor 301 being connected in this RS485 bus 350 by this RS485 interface circuit 302,
Then this deconcentrator 31 is internal has 17 RS485 communication nodes.
See the flow chart of the communication network failure detection that Fig. 4, Fig. 4 are the present invention.It generally comprises following steps:
S401, arrange communication network connect ammeter 2 number K.
S402, disconnect all ammeters 2；It is to say, all connecting valves 310 in Fig. 3 are in off-state, do not have
One ammeter 2 can carry out RS485 communication with this power information collecting device 1/ handheld terminal 4.
S403, first ammeter 2 of connection；First ammeter 2 herein is in logic.Connect, it is meant that: corresponding to this
The connecting valve 310 of individual ammeter 2 is in connection status, and other connecting valves 310 are then off.
Whether S404, communication check, i.e. detect and can between this ammeter 2 and this power information collecting device 1/ handheld terminal 4
Enough carry out RS485 communication, such as: this power information collecting device 1/ handheld terminal 4 sends the order reading table number, if all
Normally, then this power information collecting device 1/ handheld terminal 4 can obtain the table number of this ammeter 2 report, and testing result passes through shape
State word/position gives record, preserves.
S405, load detecting, i.e. detection ammeter 2 is the most a little, if having, there is load, does not connect upper (i.e. disconnecting)
If, there is not load, testing result gives record by status word/position, preserves.
S406, bus voltage detect, i.e. whether the RS485 communication interface of detection ammeter 2 is damaged, bus voltage exception
Words, represent to exist and damage, and if bus voltage is normal, represents and do not damage, and testing result gives record by status word/position,
Preserve.
S407, disconnect all ammeters 2；It is in connection status, say, that disconnect in view of current only one of which ammeter 2
It is previously in an ammeter 2 of connection status so that it is corresponding connecting valve 310 is converted to disconnect by connection.
S408, the next ammeter 2 of preparation detection.
S409, the ammeter 2 preparing just to have detected have been last？If being, go to step S410, otherwise
Words, go to step S411.
S410, output detections result, detection terminates.
S411, the next ammeter 2 of connection, forward step S404 to and be circulated detection.
It is understood that by this deconcentrator 31, by the relevant application program run on this handheld terminal 4, permissible
Realizing the detection of multiple strategy, the inspection policies not enumerated with above-mentioned flow chart is limited.It addition, above-mentioned relevant application journey
The function of sequence, can realize, such that it is able to realize this power information acquisition system 10 in this power information collecting device 1
The self-inspection of RS485 communication network 3.
It is noted that at the normal operating condition of this power information acquisition system 10, this deconcentrator 31 is equivalent to one
Individual passive device, each connecting valve 310 is in connection status, it is possible to understand that RS485 communication network 3 at this moment and one
RS485 bus is suitable.When needing the detection function realizing RS485 communication network 3, can be by this power information collecting device
1/ this handheld terminal 4, provides power supply to supply to this deconcentrator 31 so that microprocessor 301 active device such as grade thereon obtain electric enter
Enter duty.Although being as a example by the RS485 communication network 3 between power information collecting device 1 and ammeter 2 it addition, above-mentioned
Illustrate, in other embodiments, ammeter 2 can also replace the such as water meter of band RS485 communication interface, gas meter etc other
Equipment.
The beneficial effects of the present invention is, by dexterously with microprocessor 301, be connected with this microprocessor 301
RS485 interface circuit 302 and the connecting valve 310 being controlled by this microprocessor 301, constitute a deconcentrator 31, Ke Yi
When RS485 network service is normal, it is not necessary to power supply, makes RS485 communication network and a RS485 bus suitable, lead at RS485 network
When letter is abnormal, enter detection state, make RS485 communication network be changed to different connection status and automatically detect, it is possible to significantly
Improve the communication troubleshooting efficiency of power information acquisition system 10.
It should be appreciated that above example is only in order to illustrate technical scheme, it is not intended to limit, to ability
For field technique personnel, the technical scheme described in above-described embodiment can be modified, or special to its partial technology
Levy and carry out equivalent；And these amendments and replacement, all should belong to the protection domain of claims of the present invention.
Claims (10)
1. the deconcentrator of a power information acquisition system, it is characterised in that including: microprocessor, be connected with this microprocessor
The connecting port that with some connecting valves, is connected with this RS485 interface circuit of RS485 interface circuit and with these connecting valves
The some epi-position interfaces being connected the most one by one；Wherein, when RS485 network service is normal, these connecting valves are in connecting
State, this connecting port and these epi-position interfaces connect into a RS485 bus, and this deconcentrator need not consume electric energy；At RS485
During network service exception, this deconcentrator can carry out fault detect by the power supply that outside provides, and now these connecting valves are
It is controlled by this microprocessor and is in connected/disconnected state.
The deconcentrator of power information acquisition system the most according to claim 1, it is characterised in that: this deconcentrator also includes:
The A/D sample circuit being connected with this microprocessor, for detecting the voltage pressure in two communication terminal of this RS485 interface circuit
Difference.
The deconcentrator of power information acquisition system the most according to claim 2, it is characterised in that: this deconcentrator also includes:
The channel switching matched with this A/D sample circuit, for by the electricity in one of two communication terminal of this RS485 interface circuit
Pressure sends this A/D sample circuit to, and sampled voltage is flowed to this microprocessor by this A/D sample circuit again.
The deconcentrator of power information acquisition system the most according to claim 1, it is characterised in that: this deconcentrator also includes:
The subtending port being connected with this RS485 interface circuit, for extending the quantity of RS485 interface.
The deconcentrator of power information acquisition system the most according to claim 1, it is characterised in that: this deconcentrator also includes:
The some epi-position display lamps being connected with this microprocessor, each epi-position display lamp for one connecting valve of instruction and matches therewith
The communication leg corresponding to an epi-position interface closed is the most normal.
The deconcentrator of power information acquisition system the most according to claim 1, it is characterised in that: this connecting valve is relay
Device.
7. a power information acquisition system, passes through including power information collecting device with this power information collecting device
Some ammeters that RS485 communication network is connected, it is characterised in that: this RS485 communication network includes as claim 1 to 6 is arbitrary
Deconcentrator described in Xiang, wherein, the RS485 communication interface of these ammeters respectively with these epi-position interface phases one by one on deconcentrator
Even, when RS485 network service is normal, the RS485 communication interface of this power information collecting device and the connecting port on deconcentrator
It is connected；When RS485 network service exception, connecting port and a handheld terminal on this deconcentrator are connected, to carry out fault detect.
8. the communication fault detection method of a power information acquisition system, it is characterised in that use such as claim 1 to 6 times
One described deconcentrator；Connecting port and a handheld terminal of this deconcentrator are connected so that this microprocessor can be with this hands
Hold terminal to be communicated to connect by RS485, and make the internal circuit of this deconcentrator obtain power supply supply from this handheld terminal；By some
Ammeter is connected on these epi-position interfaces the most one by one；Handheld terminal is made to send detection instruction to the micro-process within deconcentrator
Device so that internal microprocessor performs different detection modes, carries out under different bus link modes from these equipment
Point-to-point communication detects.
The communication fault detection method of power information acquisition system the most according to claim 8, it is characterised in that: described
This handheld terminal is made to send detection instruction to the microprocessor within deconcentrator so that internal microprocessor performs different inspections
This process of survey mode includes: said the word to this microprocessor by this handheld terminal, makes this microprocessor control the connection specified
Switch is in connection status and carries out fault detect.
The communication fault detection method of power information acquisition system the most according to claim 9, it is characterised in that: described
This handheld terminal that makes send detection instruction to the microprocessor within deconcentrator so that internal microprocessor performs different
This process of detection mode also includes: when the connecting valve specified is in connection status, and this microprocessor is to this RS485 interface
Voltage in two communication terminal of circuit detects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802577.3A CN106327851A (en) | 2016-09-05 | 2016-09-05 | Electricity utilization information acquiring system, deconcentrator thereof and communication fault detecting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610802577.3A CN106327851A (en) | 2016-09-05 | 2016-09-05 | Electricity utilization information acquiring system, deconcentrator thereof and communication fault detecting method |
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| CN106327851A true CN106327851A (en) | 2017-01-11 |
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| CN201610802577.3A Pending CN106327851A (en) | 2016-09-05 | 2016-09-05 | Electricity utilization information acquiring system, deconcentrator thereof and communication fault detecting method |
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| CN108519241A (en) * | 2018-05-27 | 2018-09-11 | 山东梅拉德能源动力科技有限公司 | A kind of electric vehicle holds detection device and its fault detection method |
| CN112652158A (en) * | 2020-12-10 | 2021-04-13 | 国网北京市电力公司 | Power data communication link |
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Application publication date: 20170111 |