CN205829291U - The system of a kind of RS485 data acquisition looped network equipment and power supply circuits - Google Patents
The system of a kind of RS485 data acquisition looped network equipment and power supply circuits Download PDFInfo
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- CN205829291U CN205829291U CN201620813409.XU CN201620813409U CN205829291U CN 205829291 U CN205829291 U CN 205829291U CN 201620813409 U CN201620813409 U CN 201620813409U CN 205829291 U CN205829291 U CN 205829291U
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- power supply
- data acquisition
- looped network
- network equipment
- controller
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
Abstract
The utility model discloses the power supply circuits of a kind of RS485 data acquisition looped network equipment, including main power source, also include stand-by power supply, controller and switching device, when main power source normal power supply, connect the connection of main power source and RS485 data acquisition looped network equipment under the control of the controller, when main power source power-off, connect the connection of stand-by power supply and RS485 data acquisition looped network equipment under the control of the controller.By increasing a stand-by power supply so that RS485 data acquisition looped network equipment is by two independent power supply modes.Controller detects the duty of main power source in real time, when main power source power-off, control switching device to be connected with RS485 data acquisition looped network equipment by stand-by power supply so that RS485 data acquisition looped network equipment is powered by stand-by power supply, improves RS485 data acquisition looped network equipment reliability of operation with this.Additionally, this utility model is also disclosed the system of a kind of RS485 data acquisition looped network equipment.
Description
Technical field
This utility model relates to technical field of electric power, particularly relates to the system of a kind of RS485 data acquisition looped network equipment
And power supply circuits.
Background technology
Transformer station RS485 data acquisition looped network equipment is to form Self-healing Rings or the topological structure of bus tandem type,
In Self-healing Rings topological structure, an equipment abnormal or all power-off of work, system oneself can find optical fiber loop to carry out data biography
Defeated reconstruction, if there being the node power-off of two diverse locations, other RS485 data acquisition equipment between those two nodes will be from
Looped network disconnects, and causes and has no idea to gather in corresponding back end data.In the topological structure of bus tandem type, if one
Platform device powers down, the node below that this equipment all will disconnect from network.So when this outage problem occurring, in short-term
Between when having no idea again to restore electricity, be necessary for out work ticket and power-off field optical fibers jumper connection of sending a car of sending someone, so i.e. wave
Time-consuming add again workload.
Although in prior art, having the topological structure of Self-healing Rings or bus tandem type can improve RS485 data acquisition ring
Net equipment reliability of operation, but, in running, RS485 data acquisition looped network equipment is powered by a main power source, if
Main power source breaks down, then even if having the topological structure of Self-healing Rings or the topological structure of bus tandem type also cannot solve
The problem that RS485 data acquisition looped network equipment is brought due to main power source power failure.
As can be seen here, how to improve RS485 data acquisition looped network equipment reliability of operation be those skilled in the art urgently
Problem to be solved.
Utility model content
The purpose of this utility model is to provide system and the power supply circuits of a kind of RS485 data acquisition looped network equipment, is used for
Improve RS485 data acquisition looped network equipment reliability of operation.
For solving above-mentioned technical problem, this utility model provides the power supply circuits of a kind of RS485 data acquisition looped network equipment,
Including main power source, also include controller that stand-by power supply is connected with described stand-by power supply and described main power source and with described control
The switching device that device processed connects, when described main power source normal power supply, connects described main power source under the control of described controller
With the connection of described RS485 data acquisition looped network equipment, when described main power source power-off, connect under the control of described controller
Described stand-by power supply and the connection of described RS485 data acquisition looped network equipment.
Preferably, described stand-by power supply is industrial lithium set of cells.
Preferably, described switching device is switching circuit.
Preferably, the lithium battery protection circuit being connected with described industrial lithium set of cells is also included.
Preferably, the lithium battery charging circuit being connected with described industrial lithium set of cells and described controller is also included, in institute
State controller detecting described industrial lithium set of cells to need during charging is the charging of described industrial lithium set of cells.
Preferably, described controller specifically includes standby usage power supply control switching circuit and data acquisition chip, described master
Stand-by power supply control switching circuit is connected with described data acquisition chip and described switching circuit, described data acquisition chip also with
Ethernet, described main power source, described industrial lithium set of cells and described lithium battery charging circuit connect.
Preferably, described controller is specially ARM controller.
The system of a kind of RS485 data acquisition looped network equipment, including RS485 data acquisition looped network equipment, also includes described
Power supply circuits.
The system of RS485 data acquisition looped network equipment provided by the utility model and power supply circuits, by increasing by one
Stand-by power supply so that RS485 data acquisition looped network equipment is by two independent power supply modes.Controller detects main power source in real time
Duty, when main power source power-off, controls switching device and is connected with RS485 data acquisition looped network equipment by stand-by power supply, make
Obtain RS485 data acquisition looped network equipment to be powered by stand-by power supply, improve the reliable of RS485 data acquisition looped network equipment operation with this
Property.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment, the accompanying drawing used required in embodiment will be done letter below
Single introduction, it should be apparent that, the accompanying drawing in describing below is only embodiments more of the present utility model, general for this area
From the point of view of logical technical staff, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
The structure chart of the power supply circuits of a kind of RS485 data acquisition looped network equipment that Fig. 1 provides for this utility model；
Fig. 2 is the circuit diagram of a kind of lithium battery protection circuit of the novel offer of the present embodiment；
A kind of charging and discharging lithium battery circuit diagram that Fig. 3 provides for this utility model；
A kind of switching circuit figure that Fig. 4 provides for this utility model；
The power supply circuit of the another kind of RS485 data acquisition looped network equipment that Fig. 5 provides for this utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of this utility model rather than all real
Execute example.Based on the embodiment in this utility model, those of ordinary skill in the art under not making creative work premise, institute
The every other embodiment obtained, broadly falls into this utility model protection domain.
Core of the present utility model is to provide system and the power supply circuits of a kind of RS485 data acquisition looped network equipment.
In order to make those skilled in the art be more fully understood that this utility model scheme, below in conjunction with the accompanying drawings and be embodied as
The utility model is described in further detail for mode.
The structure chart of the power supply circuits of a kind of RS485 data acquisition looped network equipment that Fig. 1 provides for this utility model.Such as figure
Shown in 1, including main power source 10, also include controller 12 that stand-by power supply 11 is connected with stand-by power supply 11 and main power source 10 and
The switching device 13 being connected with controller 12, when main power source 10 normal power supply, connects main power source under the control of the controller 12
10 with the connection of RS485 data acquisition looped network equipment, when main power source 10 power-off, connect standby electricity under the control of the controller 12
Source 11 and the connection of RS485 data acquisition looped network equipment.
In being embodied as, increasing stand-by power supply 11 in the power supply circuits of RS485 data acquisition looped network equipment, this is standby
Power supply 11 works alone with main power source 10, and at a kind of power supply at the same time in work.If main power source 10 normally supplies
During electricity, then the electric energy of RS485 data acquisition looped network equipment is powered by main power source 10, if main power source 10 breaks down, i.e. and power-off
Time, then the electric energy of RS485 data acquisition looped network equipment is powered by stand-by power supply 11.Controller 12 and main power source 10 and stand-by power supply
11 are all connected with, controller 12 detect in real time main power source 10 whether can normal power supply, if can normal power supply, then control switching dress
Put 13 to be connected with RS485 data acquisition looped network equipment by main power source 10 so that RS485 data acquisition looped network equipment is from main power source 10
Place obtains electric energy；If can not normal power supply, then controller switching device 13 is by stand-by power supply 11 and RS485 data acquisition looped network
Equipment connects so that RS485 data acquisition looped network equipment obtains electric energy at stand-by power supply 11.
In order to ensure further reliability, it is also possible to increase a stand-by power supply, standby with above of this stand-by power supply
Having identical annexation with power supply, operation principle is the most identical, and therefore detailed description of the invention repeats no more.
The power supply circuits of the RS485 data acquisition looped network equipment that the present embodiment provides, by increasing a stand-by power supply, make
Obtain RS485 data acquisition looped network equipment by two independent power supply modes.Controller detects the duty of main power source in real time, when
During main power source power-off, control switching device and stand-by power supply is connected with RS485 data acquisition looped network equipment so that RS485 data
Gather looped network equipment to be powered by stand-by power supply, improve RS485 data acquisition looped network equipment reliability of operation with this.
As one preferred embodiment, on the basis of above-described embodiment, stand-by power supply 11 is industrial lithium set of cells
110。
Comprising multiple lithium battery in industrial lithium set of cells 110, lithium battery has that volume is little, energy density is high, memoryless effect
Should, cycle life is high, high-voltage battery and the advantage such as self-discharge rate is low.It is understood that stand-by power supply 11 can be other
The set of cells of form, such as nickel-based battery group etc., this utility model repeats no more.
As one preferred embodiment, on the basis of above-described embodiment, switching device 13 is switching circuit 130.
It is understood that the form of switching device 3 has a variety of, can be switching circuit 130, it is also possible to be simple
Switching switch.
As one preferred embodiment, on the basis of above-described embodiment, also include with 110 groups of industrial lithium battery even
The lithium battery protection circuit 14 connect.
Fig. 2 is the circuit diagram of a kind of lithium battery protection circuit of the novel offer of the present embodiment.In lithium battery circuit, it is necessary to
Consider safety when charging, electric discharge, to prevent deterioration in characteristics.For the overcharging of lithium battery, over-discharge, overcurrent and short circuit
Protect critically important, thus generally the most all can in battery bag design protection circuit in order to protect lithium battery.This type of protection circuit and core
Sheet is the most ripe, wide in variety, below with custom circuit illustratively protection circuit working mechanism.
1, normal condition
In normal state in circuit " " with " DO " foot all output HIGH voltages, two MOSFET are all in conducting shape for CO
State, battery can freely charge and discharge, owing to the conduction impedance of MOSFET is the least, typically smaller than 30 milliohms, therefore
Its conducting resistance is the least to the performance impact of circuit.Under this state, the consumption electric current of protection circuit is μ A level, typically smaller than 7 μ A.
2, additives for overcharge protection
When detecting that cell voltage reaches setting value, such as during 4.28V, its " CO " foot will be changed into zero electricity by high voltage
Pressure, makes V2 be transferred to shutoff by conducting, thus has cut off charge circuit, make charger cannot be charged battery again, played
Charge protection effect.And the existence of the body diode VD2 now carried due to V2, battery can be outside negative by this diode pair
It is loaded into row electric discharge.
Detect cell voltage more than 4.28V to send shutoff V2 signal between, also one section of delay time, this time delay
The length of time is determined by C3, is typically set to about 1 second, to avoid causing erroneous judgement because of interference.
3, over
In battery discharge procedure, when detecting that cell voltage is less than 2.3V, its " DO " foot will be changed into by high voltage
No-voltage, makes V1 be transferred to shutoff by conducting, thus has cut off discharge loop, makes battery cannot discharge load again, plays
Over effect.And the existence of the body diode VD1 now carried due to V1, charger can be by this diode pair electricity
Pond is charged.
Owing under over state, cell voltage can not reduce again, therefore it is required that the consumption electric current pole of protection circuit
Little, now enter low power consumpting state, whole protection circuit power consumption can be less than 0.1 μ A.
Control IC detect cell voltage be less than 2.3V to send shutoff V1 signal between, also have one section of delay time,
The length of this delay time is determined by C3, is typically set to about 100 milliseconds, to avoid causing erroneous judgement because of interference.
4, overcurrent protection
Battery is in load normal discharge, and discharge current is at 2 MOSFET through series connection, due to MOSFET
Conduction impedance, can its two ends produce a voltage, this magnitude of voltage U=I*RDS*2, RDS are single MOSFET conduction impedance,
Causing exception if loading because of certain reason, making loop current increase, when loop current is greatly to making U > 0.1V time, its " DO " foot will be by
High voltage is changed into no-voltage, makes V1 be transferred to shutoff by conducting, thus has cut off discharge loop, and making electric current in loop is zero, rises
To overcurrent protection effect.
Detecting that overcurrent occurs to sending between shutoff V1 signal, also having one section of delay time, this delay time
Length is determined by C3, usually about 13 milliseconds, to avoid causing erroneous judgement because of interference.
5, short-circuit protection
Battery is during to load discharge, if loop current is greatly to making U > 0.9V time, then be judged as load short circuits, its
" DO " foot will be changed into no-voltage by high voltage rapidly, makes V1 be transferred to shutoff by conducting, thus cuts off discharge loop, plays short circuit
Protective effect.The delay time of short-circuit protection is extremely short, typically smaller than 7 microseconds.Its operation principle is similar with overcurrent protection, simply
Determination methods is different, and protection delay time is the most different.
On the basis of above-described embodiment, as one preferred embodiment, also include with industrial lithium set of cells 110 and
At controller, the lithium battery charging circuit 15 that controller 12 connects, detects that industrial lithium set of cells 110 is industry when needing to charge
Lithium battery group is charged.
It is understood that lithium battery discharge circuit can also be included, wherein lithium battery discharge circuit and lithium cell charging
Circuit 15 annexation is identical, repeats no more.A kind of charging and discharging lithium battery circuit diagram that Fig. 3 provides for this utility model.Fig. 4 is
A kind of switching circuit figure that this utility model provides.
Charging and discharging lithium battery mainly uses TP4056 as control chip, and this is that the employing of a complete lithium ion battery is constant
The linear charger of electric current/constant voltage.With fin bottom it, have employed internal PMOSFET framework.Thermal feedback can be to charging
Electric current automatically adjusts, in order to be any limitation as chip temperature under high-power operation or high ambient temperature conditions.Charged electrical
Press solidly due to 4.2V, and charging current can carry out outside setting by a resistor.When charging current is reaching final floating charge
When being down to setting value 1/10 after voltage, TP4056 will terminate charging cycle automatically.
Lithium battery output voltage fluctuation ratio is relatively big, different according to electricity, can fluctuate between 3.2V-4.3V, so must
Need there is a mu balanced circuit to carry out power supply two times transfer, the stable voltage (being+6V here) of output supply whole system,
Here this function is completed, such as Fig. 4 with FP6717.FP6717 is (to use the merit that on state resistance is extremely low with synchronous rectification
Rate MOSFET replaces commutation diode, therefore can be substantially reduced the loss of commutator, improves the efficiency of DC/DC changer, full
Foot low pressure, the boosting IC of needs of big electric current rectification.Ultralow internal resistance special power PMOS that FP6717 is built-in, and the big electric current of 8A
Switch NMOS tube；FP6717 wide input voltage: 2.5V～5.5V, low quiescent current, self-recovering function, hypersensitive short circuit is protected
Protecting, temperature protection, internal compensation function, built-in soft start function, output over-voltage is protected.
In Fig. 3, TP4056-8 foot " B_DOWN " is that lithium cell charging enables foot, controller 12 export, set when detecting
For when being powered by main power source 10, lithium electricity charge function enables, when main power source 10 power-off, if lithium battery charging circuit 15 is in
Duty, will result in the collapse of charging system logic, and system can not be normal；" ENABLE " foot in Fig. 4 is to control FP6717
Output enables, and when main power source 10 works, and " ENABLE " is low level, does not has voltage to export, when main power source 10 power-off,
" ENABLE " is high output voltage.D3 is Schottky diode, and feature is that reaction rate is fast, and pressure drop is low, plays the main power supply of isolation
The effect of source and lithium battery supply power supply, when main power supply is powered, does not have that electricity is counter bursts to the outfan of FP6717.
The power supply circuit of the another kind of RS485 data acquisition looped network equipment that Fig. 5 provides for this utility model.In above-mentioned reality
On the basis of executing example, as one preferred embodiment, controller 12 specifically includes standby usage power supply control switching circuit 120
With data acquisition chip 121, standby usage power supply control switching circuit 120 connects with data acquisition chip 121 and switching circuit 130
Connecing, data acquisition chip 121 is also with Ethernet 16, main power source 10, industrial lithium set of cells 110 and lithium battery charging circuit 15 even
Connect.
Data acquisition chip 121 gathers the status information of main power source 10, the status information of industrial lithium set of cells 110, lithium electricity
Then these information package are realized data by Ethernet and upload by the status information of pond charging circuit 15.
On the basis of above-described embodiment, as one preferred embodiment, controller 12 is specially ARM controller.
The system of a kind of RS485 data acquisition looped network equipment, including RS485 data acquisition looped network equipment, also includes above-mentioned
Power supply circuits described in embodiment.
Owing to power supply circuits work process has been described in detail, therefore the present embodiment is the most superfluous
State.
System and power supply circuits to RS485 data acquisition looped network equipment provided by the utility model have been carried out in detail above
Thin introduction.In description, each embodiment uses the mode gone forward one by one to describe, and what each embodiment stressed is real with other
Executing the difference of example, between each embodiment, identical similar portion sees mutually.For device disclosed in embodiment
Speech, owing to it corresponds to the method disclosed in Example, so describe is fairly simple, relevant part sees method part explanation
?.It should be pointed out that, for those skilled in the art, in the premise without departing from this utility model principle
Under, it is also possible to this utility model is carried out some improvement and modification, and these improve and modification also falls into this utility model right and wants
In the protection domain asked.
Claims (8)
1. power supply circuits for RS485 data acquisition looped network equipment, including main power source, it is characterised in that also include standby electricity
Controller that source is connected with described stand-by power supply and described main power source and the switching device being connected with described controller, work as institute
When stating main power source normal power supply, under the control of described controller, connect described main power source and described RS485 data acquisition looped network
The connection of equipment, when described main power source power-off, connects described stand-by power supply and described RS485 under the control of described controller
The connection of data acquisition looped network equipment.
Power supply circuits the most according to claim 1, it is characterised in that described stand-by power supply is industrial lithium set of cells.
Power supply circuits the most according to claim 2, it is characterised in that described switching device is switching circuit.
Power supply circuits the most according to claim 3, it is characterised in that also include the lithium being connected with described industrial lithium set of cells
Battery protecting circuit.
5. according to the power supply circuits described in claim 2-4 any one, it is characterised in that also include and described industrial lithium battery
At described controller, the lithium battery charging circuit that group and described controller connect, detects that described industrial lithium set of cells needs charging
Time be described industrial lithium set of cells charging.
Power supply circuits the most according to claim 5, it is characterised in that described controller specifically includes the switching of standby usage power supply
Control circuit and data acquisition chip, described standby usage power supply control switching circuit and described data acquisition chip and described switching
Circuit connects, and described data acquisition chip also fills with Ethernet, described main power source, described industrial lithium set of cells and described lithium battery
Electricity circuit connects.
Power supply circuits the most according to claim 1, it is characterised in that described controller is specially ARM controller.
8. a system for RS485 data acquisition looped network equipment, including RS485 data acquisition looped network equipment, it is characterised in that also
Including the power supply circuits described in claim 1-7 any one.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620813409.XU CN205829291U (en) | 2016-07-27 | 2016-07-27 | The system of a kind of RS485 data acquisition looped network equipment and power supply circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620813409.XU CN205829291U (en) | 2016-07-27 | 2016-07-27 | The system of a kind of RS485 data acquisition looped network equipment and power supply circuits |
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| CN205829291U true CN205829291U (en) | 2016-12-21 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733075A (en) * | 2017-11-14 | 2018-02-23 | 深圳市米阳科技有限公司 | A kind of electric power system for preventing power-supply fluctuation from impacting |
| CN108833246A (en) * | 2018-05-19 | 2018-11-16 | 安徽国电京润电力科技有限公司 | A kind of Crossed Circle network topology structure that electric power scheduling automatization system is trans-regional |
-
2016
- 2016-07-27 CN CN201620813409.XU patent/CN205829291U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733075A (en) * | 2017-11-14 | 2018-02-23 | 深圳市米阳科技有限公司 | A kind of electric power system for preventing power-supply fluctuation from impacting |
| CN108833246A (en) * | 2018-05-19 | 2018-11-16 | 安徽国电京润电力科技有限公司 | A kind of Crossed Circle network topology structure that electric power scheduling automatization system is trans-regional |
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