CN203870431U - Electricity consumption information acquisition system RS485 communication monitoring device - Google Patents
Electricity consumption information acquisition system RS485 communication monitoring device Download PDFInfo
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- CN203870431U CN203870431U CN201420281887.1U CN201420281887U CN203870431U CN 203870431 U CN203870431 U CN 203870431U CN 201420281887 U CN201420281887 U CN 201420281887U CN 203870431 U CN203870431 U CN 203870431U
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- 238000004891 communication Methods 0.000 title claims abstract description 30
- 238000012806 monitoring device Methods 0.000 title claims abstract description 20
- 230000005611 electricity Effects 0.000 title abstract 2
- 238000001514 detection method Methods 0.000 claims abstract description 18
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010835 comparative analysis Methods 0.000 description 1
- 238000007405 data analysis Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
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- 238000010223 real-time analysis Methods 0.000 description 1
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Abstract
The utility model discloses an electricity consumption information acquisition system RS485 communication monitoring device which comprises a monitoring device main body. The monitoring device main body comprises an RS485 circuit module. The monitoring device main body also comprises a master control module capable of receiving RS485 bus messages, an RS485 bus voltage detection module capable of detecting whether the RS485 bus is connected reversely, open-circuited or short-circuited, a load resistor module capable of detecting RS485 bus load conditions, a drive resistor module capable of detecting drive capability of the RS485 bus, and a power source module. The RS485 bus voltage detection module, the load resistor module and the drive resistor module are connected with the master control module and the RS485 circuit module. The master control module is provided with an upper computer communication interface and a debugging and downloading interface. The device in the utility model has the advantages of being capable of finishing RS485 bus communication failure classification easily, conveniently and quickly.
Description
Technical field
The utility model relates to the technical field that power information gathers, and is specifically related to a kind of power information acquisition system RS485 communication monitoring device.
Background technology
Grid company is carried out intelligent grid, and power information acquisition system has been carried out large-scale covering, and electrical network is greatly improved at the data capability of user's side.In power information acquisition system, communicating by letter between collector and ammeter adopts RS485 bus mode to communicate by letter.Due to the Some features of RS485 bus communication mode itself, the situation that collector there will be information not go up to the communication between ammeter, due to the increase of power information acquisition system area coverage, the situation that this problem occurs also increases gradually, has brought very large puzzlement to O&M personnel.In prior art, when reason that O&M personnel do not go up in investigation RS485 information, detection means is limited to use universal electric meter and detects, RS485 circuit is carried out to loaded down with trivial details circuit splicing, just can find RS485 circuit and occur which type of problem, this requires O&M personnel to have very high electric circuit knowledge, sometimes needs several O&M personnel to coordinate, take time and effort, process is loaded down with trivial details.
Utility model content
The technical matters existing for prior art, the utility model provides a kind of several testing circuits, simple and convenient power information acquisition system RS485 communication monitoring device that completes rapidly the failure modes of RS485 bus communication of energy gathered.
In order to solve existing technical matters, the technical solution adopted in the utility model is:
A kind of power information acquisition system RS485 communication monitoring device, include supervising device main body, supervising device main body includes RS485 circuit module, wherein: supervising device main body also include can receive RS485 bus message main control module, can detect the whether reversal connection of RS485 bus, open circuit and the RS485 bus voltage detection module of short circuit, can detect RS485 bus load situation pull-up resistor module, can detect driving resistive module and the power module of RS485 bus driver ability; RS485 bus voltage detection module, pull-up resistor module and driving resistive module are all connected with main control module and RS485 circuit module, are provided with host computer communication interface and debugging and download interface on main control module.
Further improvement as technique scheme:
In above-mentioned RS485 bus voltage detection module, include and measure the voltage-level detector of voltage between the A line of RS485Z bus and B line and can connect into the supercharging resistance of RS485Z bus.
Above-mentioned pull-up resistor module includes the load circuit arranging with RS485Z bus parallel connection, and load circuit includes pull-up resistor.
Above-mentioned pull-up resistor is shift resistance, and gear is 120 Ω, 470 Ω and 2000 Ω third gear.
Above-mentioned driving resistive module includes the driving circuit being connected with RS485Z bus, and driving circuit is connected with the pull-up resistor that can strengthen RS485Z bus driver ability.
Above-mentioned pull-up resistor is shift resistance, and gear is 200 Ω, 1000 Ω and 2000 Ω third gear.
Above-mentioned RS485 circuit module includes RS485I circuit, RS485II circuit and RS485III circuit.
Above-mentioned power module output voltage is 5V.
Above-mentioned main control module adopts MB9BF218S main control chip, and is provided with 144 pins on this MB9BF218S main control chip.
Compared with prior art, the beneficial effects of the utility model are:
A kind of power information acquisition system RS485 communication monitoring device of the present utility model, include supervising device main body, supervising device main body includes RS485 circuit module, wherein: supervising device main body also include can receive RS485 bus message main control module, can detect the whether reversal connection of RS485 bus, open circuit and the RS485 bus voltage detection module of short circuit, can detect RS485 bus load situation pull-up resistor module, can detect driving resistive module and the power module of RS485 bus driver ability; RS485 bus voltage detection module, pull-up resistor module and driving resistive module are all connected with main control module and RS485 circuit module, are provided with host computer communication interface and debugging and download interface on main control module.
The utility model has been realized following functions:
1, can the simple and convenient classification that completes reliably RS485 bus communication fault, to short circuit, open circuit, the situation such as open circuit, reversal connection carries out real-time analysis;
2, can measure RS485 bus load situation;
3, can detect RS485 bus driver ability.
The utlity model has following advantage:
1, can make systematically conclusion to faults such as the opening circuit of RS485 bus, short circuit, open circuits, and simple to operate, accurate, practical;
2, there are 3 road RS485 communication interfaces, can adapt to the various terminal applies in power information acquisition system;
3, can cross driving force and the loading condition etc. of detected RS485 bus are carried out to analysis and evaluation, O&M personnel are proposed to rectification suggestion, can effectively promote on-the-spot O&M personnel's work efficiency, quick solution particular problem, avoid former detection methods to be confined to use general-purpose to detect loaded down with trivial details operation in table look-up process, and reduced the requirement of O&M personnel's technology being wanted to fitness.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model;
Fig. 2 detects I type concentrator RS485 bus failure to detect logical flow chart.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
Fig. 1 is to Figure 2 shows that structural representation of the present utility model.
Reference numeral is wherein: supervising device main body 1, main control module 2, RS485 bus voltage detection module 3, pull-up resistor module 4, driving resistive module 5, RS485 circuit module 6, RS485I type circuit 61, RS485II type circuit 62, RS485III type circuit 63, host computer communication interface 7, debugging and download interface 8, power module 9.
Below in conjunction with Figure of description and specific embodiment, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of power information acquisition system RS485 communication monitoring device of the present utility model, include supervising device main body 1, supervising device main body 1 includes the RS485 circuit module 6 being connected with the concentrator of power information acquisition system, wherein: supervising device main body 1 also includes the main control module 2 that can receive RS485 bus message, can detect the whether reversal connection of RS485 bus, open circuit and the RS485 bus voltage detection module 3 of short circuit, can detect the pull-up resistor module 4 of RS485 bus load situation, can detect driving resistive module 5 and the power module 9 of RS485 bus driver ability, RS485 bus voltage detection module 3, pull-up resistor module 4 and driving resistive module 5 are all connected with main control module 2 and RS485 circuit module 6, are provided with host computer communication interface 7 and debugging and download interface 8 on main control module 2.
In embodiment, in RS485 bus voltage detection module 3, include and measure the voltage-level detector of voltage between the A line of RS485Z bus and B line and can connect into the supercharging resistance of RS485Z bus.
In embodiment, pull-up resistor module 4 includes the load circuit arranging with RS485Z bus parallel connection, and load circuit includes pull-up resistor.
In embodiment, pull-up resistor is shift resistance, and gear is 120 Ω, 470 Ω and 2000 Ω third gear.
In embodiment, drive resistive module 5 to include the driving circuit being connected with RS485Z bus, driving circuit is connected with the pull-up resistor that can strengthen RS485Z bus driver ability.
In embodiment, pull-up resistor is shift resistance, and gear is 200 Ω, 1000 Ω and 2000 Ω third gear.
In embodiment, RS485 circuit module 6 includes RS485I circuit 61, RS485II circuit 62 and RS485III circuit 63.
In embodiment, power module 9 output voltages are 5V.
In embodiment, main control module 2 adopts MB9BF218S main control chip, and is provided with 144 pins on this MB9BF218S main control chip.
The utility model set the module of several difference in functionalitys, power module 9 output voltages are 5V, because the RS485 transceiving chip of main flow is all to work in the system of 5V now, main control module 2 adopts MB9BF218S main control chip, on MB9BF218S main control chip, be provided with 144 pins, can provide sufficient IO pin to carry out control circuit, and this chip power-consumption is lower frequently, makes this device can on-the-spotly use the longer time.RS485 circuit module 6 includes RS485I type circuit 61, RS485II type circuit 62 and RS485III type circuit 63, can meet like this testing requirement of I type concentrator, II type concentrator and collector in power information acquisition system.Drive resistive module 5 to comprise 200 Ω, 1000 Ω and 2000 Ω third gear, can coordinate like this loading condition of bus to select flexibly gear, RS485 bus is carried out to test analysis.Pull-up resistor module 4 comprises 120 Ω, 470 Ω and 2000 Ω third gear, can coordinate like this driving force of bus to select flexibly gear, and RS485 bus is carried out to test analysis.RS485 bus voltage detection module 3 mainly carries out the voltage tester between AB circuit to RS485 bus, and the aggregation of data analysis comparison that main control module 2 can be received according to magnitude of voltage with from bus, draws the actual conditions in bus.The existence of host computer communication interface 7 can communicate with host computer main control module 2.
Explain below in conjunction with Fig. 2 RS485 bus voltage detection module 3 is how to carry out short circuit, open circuit, open circuit, the situations such as reversal connection detect: first RS485 circuit module 6 is accessed in circuit under test, receiving after the signal of host computer, main control module 2 detects and uses any RS485 circuit, for example, taking I type concentrator as example, RS485I type circuit 61 paths, voltage-level detector detects the voltage of RS485 bus AB, if it is negative that voltage shows, main control module 2 draws the reversal connection of RS485 bus, conclusion is returned to host computer, if voltage is greater than 0.3V, main control module 2 requires to make a copy for message, if can receive the message that concentrator is sent, RS485 circuit is normal, if can not receive the message that concentrator is sent, RS485 open circuit, voltage is greater than 0V and is less than 0.3V, on concentrator, increase supercharging resistance, resistance 200 Ω, if voltage is still less than 0.3V, draw RS485 circuit breaker, if voltage is greater than 0.3V, main control module 2 requires to make a copy for message, if can receive the message that concentrator is sent, RS485 circuit is normal, if can not receive the message that gatherer is sent, RS485 open circuit.
How explained later pull-up resistor module 4 measures RS485 bus load situation: in power information acquisition system, the ammeter accessing in RS485 bus is more, between two lines of bus, namely the voltage between A B will be lower, pull-up resistor module 4 of the present utility model also accesses RS485 bus in parallel, this further reduces the voltage that concentrator is got, by the voltage table that is arranged on concentrator both sides, the change in voltage recording is dealt in main control module 2, main control module 2 learns according to the message of receiving the collectors that have how many parallel connections in parallel circuit again, by comparative analysis, just can draw the load in RS485 bus, can analyze the power of RS485 bus load ability by the voltage variety at concentrator two ends, if RS485 bus load ability is strong, voltage variety is little, if a little less than RS485 bus load ability, voltage variety is large.
Explained later drives resistive module 5 how to detect RS485 bus driver ability: this function is can not when uploading message, use at concentrator, fault is likely to cause concentrator voltage low a little less than RS485 bus driver ability, cannot normally work, drive resistive module 5 on concentrator, to be connected with the pull-up resistor that can strengthen concentrator driving force, promote bus driver ability by pull-up resistor, if at this moment concentrator can normally send message, a little less than RS485 bus driver ability is described, need to promote driving force.
Below be only preferred implementation of the present utility model, protection domain of the present utility model is also not only confined to above-described embodiment, and all technical schemes belonging under the utility model thinking all belong to protection domain of the present utility model.It should be pointed out that for those skilled in the art, in the some improvements and modifications that do not depart under the utility model principle prerequisite, should be considered as protection domain of the present utility model.
Claims (9)
1. a power information acquisition system RS485 communication monitoring device, include supervising device main body (1), described supervising device main body (1) includes RS485 circuit module (6), it is characterized in that: described supervising device main body (1) also includes the main control module (2) that can receive RS485 bus message, can detect the whether reversal connection of RS485 bus, open circuit and the RS485 bus voltage detection module (3) of short circuit, can detect the pull-up resistor module (4) of RS485 bus load situation, can detect driving resistive module (5) and the power module (9) of RS485 bus driver ability, described RS485 bus voltage detection module (3), pull-up resistor module (4) and driving resistive module (5) are all connected with described main control module (2) and RS485 circuit module (6), are provided with host computer communication interface (7) and debugging and download interface (8) on described main control module (2).
2. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, is characterized in that: in described RS485 bus voltage detection module (3), include and measure the voltage-level detector of voltage between the A line of RS485 bus and B line and can connect into the supercharging resistance of RS485 bus.
3. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, it is characterized in that: described pull-up resistor module (4) includes the load circuit arranging with RS485 bus parallel connection, and described load circuit includes pull-up resistor.
4. a kind of power information acquisition system RS485 communication monitoring device according to claim 3, it is characterized in that: described pull-up resistor is shift resistance, and gear is 120 Ω, 470 Ω and 2000 Ω third gear.
5. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, it is characterized in that: described driving resistive module (5) includes the driving circuit being connected with RS485 bus, and described driving circuit is connected with the pull-up resistor that can strengthen RS485 bus driver ability.
6. a kind of power information acquisition system RS485 communication monitoring device according to claim 5, it is characterized in that: described pull-up resistor is shift resistance, and gear is 200 Ω, 1000 Ω and 2000 Ω third gear.
7. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, is characterized in that: described RS485 circuit module (6) includes RS485I circuit (61), RS485II circuit (62) and RS485III circuit (63).
8. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, is characterized in that: described power module (9) output voltage is 5V.
9. a kind of power information acquisition system RS485 communication monitoring device according to claim 1, is characterized in that: described main control module (2) adopts MB9BF218S main control chip, and is provided with 144 pins on this MB9BF218S main control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281887.1U CN203870431U (en) | 2014-05-29 | 2014-05-29 | Electricity consumption information acquisition system RS485 communication monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420281887.1U CN203870431U (en) | 2014-05-29 | 2014-05-29 | Electricity consumption information acquisition system RS485 communication monitoring device |
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| CN203870431U true CN203870431U (en) | 2014-10-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201420281887.1U Expired - Lifetime CN203870431U (en) | 2014-05-29 | 2014-05-29 | Electricity consumption information acquisition system RS485 communication monitoring device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865470A (en) * | 2015-05-22 | 2015-08-26 | 国家电网公司 | Portable networking test device based on RS-485 communication technology |
| CN106533834A (en) * | 2016-11-25 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | System and method for detecting maximum load capacity of RS485 communication network |
-
2014
- 2014-05-29 CN CN201420281887.1U patent/CN203870431U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865470A (en) * | 2015-05-22 | 2015-08-26 | 国家电网公司 | Portable networking test device based on RS-485 communication technology |
| CN106533834A (en) * | 2016-11-25 | 2017-03-22 | 云南电网有限责任公司电力科学研究院 | System and method for detecting maximum load capacity of RS485 communication network |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141008 |