CN205354332U - Electric power secondary equipment state acquisition system - Google Patents
Electric power secondary equipment state acquisition system Download PDFInfo
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- CN205354332U CN205354332U CN201620016125.8U CN201620016125U CN205354332U CN 205354332 U CN205354332 U CN 205354332U CN 201620016125 U CN201620016125 U CN 201620016125U CN 205354332 U CN205354332 U CN 205354332U
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- power equipment
- bus
- sensing
- acquisition system
- state acquisition
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Abstract
The utility model discloses an electric power secondary equipment state acquisition system, include: a plurality of AD resistance network that samples, AD sampling resistance network be all including installing in a plurality of sensing device of a plurality of electric power secondary equipment side sides respectively and install a plurality of sensing annexes on a plurality of electric power secondary equipment's operating means respectively, sensing device by switch resistance respectively with the branch switch formation of connecting in parallel, a plurality of collectors, a plurality of collectors are used for gathering the analog signal of a plurality of AD sampling resistance network output respectively and carrying out the AD conversion to calculate AD conversion value and carry out the comparison with the internal state table, convert each operating means's switching value state into, and bus data management device, bus data management device carries out communication connection through the mode of bus with a plurality of collectors. The utility model discloses an electric power secondary equipment state acquisition system have upgrade to reform transform safe reasonable, circuit design is simple, reform transform low cost's beneficial effect.
Description
Technical field
This utility model relates to technical field of electric power, particularly relates to a kind of second power equipment state acquisition system.
Background technology
Along with the development of power technology, electric intelligent degree has reached the intelligence degree of certain level, particularly primary equipment, substantially can realize the Stateful Inspection in a distant place；And pressing plate in second power equipment such as transformer station, sky are opened etc. because various technical reasons, also extensively it is in the mode of " site " and the state recognition of " manual " at present, particularly currently it is in the transformer station of the state of putting into operation, plant stand on a large scale, the state acquisition difficulty of its secondary device is bigger, and having had a strong impact on is the development in an all-round way of electric intelligent.
At present, mainly secondary device is carried out upgrading for the method for second power equipment state acquisition.But transformation needs stoppage in transit relevant device, changes secondary connection, and secondary device quantity is many, and retrofit work amount is big and technological requirement is high, and difficulty is big, and the transformation cycle is long, also needs to carry out correlation test after transformation.And at present mode to secondary device state acquisition is all one secondary device state of a channel acquisition mostly, such circuit structure is fairly simple.But when need to concentrate carry out multiple secondary device state and the remote collection of secondary device distribution distance time, it is accomplished by multiple acquisition channel and multilevel relay, so need to increase multi pass acquisition circuit and pcb board area, thus causing consuming more structure space, and need to consume the I/O mouth resource of more multi-CPU, owing to I/O mouth quantity and structure space are limited, the quantity so determining this acquisition mode collection is limited, owing to the reason such as signal disturbing and signal attenuation can not realize remote state acquisition.Simultaneously this mode concentrate relatively costly when carrying out multiple state acquisition, connecting line is more, reliability is low.
Summary of the invention
For above-mentioned prior art present situation, technical problem to be solved in the utility model is in that, it is provided that a kind of upgrading safe and reasonable, the second power equipment state acquisition system that circuit design is simple, improvement cost is cheap.
In order to solve above-mentioned technical problem, a kind of second power equipment state acquisition system provided by the utility model, including:
Some AD sampling resistor networks, each described AD sampling resistor network all includes analog signal output, is respectively arranged in some sensing devices of some second power equipment sides and is respectively arranged in the some sensing adnexaes on the operation device of some second power equipments, some sensing devices are formed by some switch resistances are in parallel with some branch switch respectively, some sensing devices are serially connected between analog signal output and the ground of power supply, sampling resistor of connecting between described analog signal output and the positive pole of power supply；When second power equipment in an ON state time, the sensing adnexa being installed on the operation device of this second power equipment activates the branch switch of the sensing device of this second power equipment side, when second power equipment is off, the sensing adnexa being installed on the operation device of this second power equipment can not activate the branch switch of the sensing device of this second power equipment side；
Some harvesters, the input of some harvesters is connected with the analog signal output of some described AD sampling resistor networks respectively, for gathering the analogue signal of some described AD sampling resistor networks output respectively and being AD converted, and AD conversion value is calculated and compares with internal state table, be converted to the on-off state of each operation device；And
Bus data managing device, described bus data managing device is communicatively coupled by the mode of bus and some described harvesters.
Wherein in an embodiment, the resistance of some switch resistances order by number is successively decreased gradually or is incremented by gradually.
Wherein in an embodiment, described bus is 485 buses, spi bus, iic bus, 422 buses, EIB bus, TXD/RXD bus, LIN bus, CAN, ProfiBus bus or fieldbus.
Wherein in an embodiment, it is magnetic, light or dynamo-electric sensing that described sensing adnexa activates the mode of the branch switch of described sensing device.
The second power equipment state acquisition system that this utility model provides, by AD sampling resistor network, the physical state transformations of the operation device of second power equipment is become switching value, and convert multiple on-off model to analogue signal, gather the analogue signal of AD sampling resistor network output again through harvester and be AD converted, and AD conversion value is calculated and compares with internal state table, be converted to the on-off state of each operation device, so that it is determined that the state of secondary device corresponding to switching value, secondary device state is to deliver to bus data managing device by bus in the way of digital information the most at last.Compared with prior art, do not stop transport relevant first and second equipment and do not change secondary connection, make the upgrading safe and reasonable of second power equipment state acquisition, practical, circuit design is simple, improvement cost is cheap, system composition simple and clear, on off state convenient management is effective.
This utility model additional technical feature is had the advantage that will illustrate in this specification detailed description of the invention part.
Accompanying drawing explanation
Fig. 1 is the rough schematic view of second power equipment of the prior art；
Fig. 2 is the principle schematic of the second power equipment state acquisition system in this utility model embodiment；
Fig. 3 is the principle schematic of the AD sampling resistor network of the second power equipment state acquisition system in this utility model embodiment；
Fig. 4 and Fig. 5 is the sensing device operating principle schematic diagram in this utility model embodiment, and wherein, Fig. 4 is state during switch Guan Bi, and Fig. 5 switchs state when opening.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments to this utility model it is described in detail.It should be noted that when not conflicting, the feature in following embodiment and embodiment can be mutually combined.
Fig. 1 is the rough schematic view of second power equipment of the prior art, and Fig. 2 is the principle schematic of the second power equipment state acquisition system in this utility model embodiment.As shown in Figure 1, 2, second power equipment state acquisition system includes some AD sampling resistor networks 31 ..., 3n, some harvesters 21 ..., 2n and bus data managing device 10.
Fig. 3 is the principle schematic of the AD sampling resistor network of the second power equipment state acquisition system in this utility model embodiment.As shown in Figure 3, described AD sampling resistor network includes power supply VCC, sampling resistor R ', some switch resistance R1 ..., Rn, some branch switch S1 ..., Sn and some sensing adnexa J1 ' ..., Jn ', some branch switch S1 ..., Sn form some sensing device J1 ..., Jn with some switch resistance R1 ..., Rn parallel connection respectively, all sensing device J1 ..., Jn are serially connected between the ground of analog signal output AD and power supply VCC, and connect between analog signal output AD and the positive pole of power supply VCC sampling resistor R '.Some switch resistance R1 ..., Rn resistance different.Calculate in order to convenient, some switch resistance R1 ..., Rn resistance order by number successively decrease gradually or be incremented by (such as R, 1/2R, 1/3R ..., 1/nR, or R, 2R, 3R ..., nR) gradually.Sensing device J1 ..., the Jn resistance when branch switch S1 ..., Sn closure state are 0, and sensing device J1 ..., the Jn resistance when branch switch S1 ..., Sn off-state are Ri, 0 < i≤n.In the present embodiment, sampling resistor R ' and switch resistance R1 ..., Rn be designed to meet all combinations of states of n branch switch S1 ..., Sn so that analog signal output AD is at best able to output 2^n kind can by the different voltage signal of the AD sample circuit identification of described harvester.
Some sensing adnexa J1 ' ..., Jn ' are separately mounted on the operation device K1 ... of second power equipment, Kn, for activating some branch switch S1 ..., Sn respectively.That is: when the operation device K1 of second power equipment in an ON state time, be installed on this operation device K1 on sensing adnexa J1 ' activate be installed on this operation device K1 side branch switch S1, now branch switch S1 close (see Fig. 4)；On the contrary, when the operation device K1 of second power equipment is off, the sensing adnexa J1 ' being installed on this operation device K1 can not activate the branch switch S1 being installed on this operation device K1 side, and now branch switch S1 disconnects (see Fig. 5).More preferably, described sensing adnexa activates the mode of described branch switch is magnetic, light or dynamo-electric sensing.
With continued reference to Fig. 2, some harvesters 21 ..., 2n input connect with the analog signal output AD of some described AD sampling resistor networks 31 ..., 3n respectively, for gather respectively some described AD sampling resistor networks 31 ..., 3n output analogue signal and be AD converted, and AD conversion value is calculated and compares with internal state table, be converted to the on-off state of each operation device K1 ..., Kn.
Described bus data managing device 10 is communicatively coupled with some described harvesters 21 ..., 2n by the mode of bus, obtains the operation device K1 ... of second power equipment, Kn state and manages concentratedly.Described bus is 485 buses, spi bus, iic bus, 422 buses, EIB bus, TXD/RXD bus, LIN bus, CAN, ProfiBus bus or fieldbus.Bus data managing device has the function communicated with host computer, it is possible to by communication interface, the status data of secondary device is delivered to host computer；Communication mode is Ethernet, or RS485, or RS422, or radio communication.
As can be seen here, the second power equipment state acquisition system of this utility model embodiment, based on bus mode, use resistor network, convert on-off model to analog signals, switch resistance is obtained by AD sampling circuit samples analog voltage, and the switch resistance according to the acquisition of resistance calculations step judges the Guan Bi of all switches on acquisition circuit and the state of off-state with switch series circuit configuration, thus realizing the collection of multi-way switching values, more traditional switch acquisition device has more practicality.The circuit connected in series resistance that all combinations obtaining all switch compositions in circuit structure are corresponding is first calculated according to the series circuit that all sensing devices are formed, and form the data form that switch resistance is corresponding with on off state, then adopt look-up table to determine Guan Bi and the off-state of all switches on circuit according to switch resistance.Look-up table is existing conventional software processing method, convenient and swift.In decision circuitry, the Guan Bi of all switches is with off-state step, and resistance value corresponding in the series resistance tables of data that switch resistance R refers to described sensing device is formed that AD sampling resistor network calculations goes out is suitable.Harvester converts the information of the disconnection of each switch Yu closure state to digital information, again through bus transfer to bus data managing device.
To sum up, the second power equipment state acquisition system of this utility model patent Example, owing to not changing secondary connection, utilize resistor network to convert on-off model to analogue signal cleverly to process, and by the mode of bus, it is possible to the second power equipment state acquisition at various scenes is got up, especially for second power equipment upgrading in properly functioning, the situations such as secondary device position distribution is in disorder, and each positional distance is remote, traditional state collecting device can not be suitable for.Make that circuit is very simple and reliable, cost is substantially reduced, use only small circuit overhead just can complete the collection of multiple switching value, widened the market of centralized second power equipment state acquisition, had very important significance.
And, resistor network is first by some switch resistance R1, ..., Rn respectively with some branch switch S1, ..., Sn parallel connection forms some sensing device J1, ..., Jn (i.e. switching branches), some sensing device J1 again, ..., Jn and sampling resistor R ' is serially connected between the positive pole of power supply VCC and the ground of power supply VCC and is formed, the a/d resolution of harvester is required low by this resistor network, minimum resolution voltage has only to meet some switch resistance R1, ..., the voltage difference when switching branches that two resistance that in Rn, resistance is minimum are corresponding individually uniquely closes, practical.
Embodiment described above only have expressed several embodiments of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to this utility model the scope of the claims.It should be pointed out that, for the person of ordinary skill of the art, without departing from the concept of the premise utility, it is also possible to make some deformation and improvement, these broadly fall into protection domain of the present utility model.
Claims (4)
1. a second power equipment state acquisition system, it is characterised in that including:
Some AD sampling resistor networks (31, ..., 3n), each described AD sampling resistor network all includes analog signal output (AD), it is respectively arranged in some sensing device (J1 of some second power equipment sides, ..., and be respectively arranged in the operation device (K1 of some second power equipments Jn), ..., Kn) the some sensing adnexa (J1 ' on, ..., Jn '), some sensing device (J1, ..., Jn) by some switch resistance (R1, ..., Rn) respectively with some branch switch (S1, ..., Sn) formation in parallel, some sensing device (J1, ..., Jn) it is serially connected between the ground of analog signal output (AD) and power supply (VCC), connect between described analog signal output (AD) and the positive pole of power supply (VCC) sampling resistor (R ')；When second power equipment in an ON state time, the sensing adnexa being installed on the operation device of this second power equipment activates the branch switch of the sensing device of this second power equipment side, when second power equipment is off, the sensing adnexa being installed on the operation device of this second power equipment can not activate the branch switch of the sensing device of this second power equipment side；
Some harvesters (21 ..., 2n), the input of some harvesters (21 ..., 2n) connects with the analog signal output (AD) of some described AD sampling resistor networks (31 ..., 3n) respectively, for gathering analogue signal that some described AD sampling resistor networks (31 ..., 3n) export respectively and being AD converted, and AD conversion value is calculated and compares with internal state table, be converted to the on-off state of each operation device (K1 ..., Kn)；And
Bus data managing device (10), described bus data managing device (10) is communicatively coupled by the mode of bus and some described harvesters (21 ..., 2n).
2. second power equipment state acquisition system according to claim 1, it is characterised in that the resistance of some switch resistances (R1 ..., Rn) order by number is successively decreased gradually or is incremented by gradually.
3. second power equipment state acquisition system according to claim 1, it is characterized in that, described bus is 485 buses, spi bus, iic bus, 422 buses, EIB bus, TXD/RXD bus, LIN bus, CAN, ProfiBus bus or fieldbus.
4. second power equipment state acquisition system according to claim 1, it is characterised in that it is magnetic, light or dynamo-electric sensing that described sensing adnexa activates the mode of the branch switch of described sensing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620016125.8U CN205354332U (en) | 2016-01-06 | 2016-01-06 | Electric power secondary equipment state acquisition system |
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| CN201620016125.8U CN205354332U (en) | 2016-01-06 | 2016-01-06 | Electric power secondary equipment state acquisition system |
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| CN205354332U true CN205354332U (en) | 2016-06-29 |
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| CN201620016125.8U Withdrawn - After Issue CN205354332U (en) | 2016-01-06 | 2016-01-06 | Electric power secondary equipment state acquisition system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952463A (en) * | 2016-01-06 | 2017-07-14 | 珠海优特电力科技股份有限公司 | Second power equipment state acquisition system and method |
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2016
- 2016-01-06 CN CN201620016125.8U patent/CN205354332U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106952463A (en) * | 2016-01-06 | 2017-07-14 | 珠海优特电力科技股份有限公司 | Second power equipment state acquisition system and method |
| CN106952463B (en) * | 2016-01-06 | 2023-05-12 | 珠海优特电力科技股份有限公司 | State acquisition system and method for electric power secondary equipment |
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| C14 | Grant of patent or utility model | ||
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20230512 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20230512 |
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| AV01 | Patent right actively abandoned |