CN205791471U - A kind of redundancy phase failure protector - Google Patents
A kind of redundancy phase failure protector Download PDFInfo
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- CN205791471U CN205791471U CN201620459045.XU CN201620459045U CN205791471U CN 205791471 U CN205791471 U CN 205791471U CN 201620459045 U CN201620459045 U CN 201620459045U CN 205791471 U CN205791471 U CN 205791471U
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Abstract
The utility model proposes a kind of redundancy phase failure protector, sensitivity and reliability are higher.This redundancy phase failure protector includes A, B two-way completely identical in structure open-phase protection module, and every line phase-interruption protection circuit all includes MCU, DC reference voltage, three-phase current sensing unit, current/voltage-converted unit, AC/DC regulated power supply, local alarm unit, running voltage output unit；Separately there is a real-time monitoring module; main by warning MCU, remote alert unit and output combining unit; warning MCU Real-time Collection A, B two be the input signal of local alarm unit described in line phase-interruption protection module; outputing signal to remote alert unit after carrying out logical "or" computing, output combining unit exports to drive load-relay after the output voltage of A, B two running voltage output unit described in line phase-interruption protection module is carried out logical "or" computing.
Description
Technical field
This utility model relates to a kind of open-phase protection circuit.
Background technology
Chinese patent literature CN202856311U discloses a kind of self-diagnosis phase failure protector, the 24V output voltage of this product
From the series connection of 3 transformer secondary outputs, transformator needs larger volume.Load (i.e. " three-phase point machine ") electric current
The stability of 24V output is had a significant impact by the change of size with magnitude of voltage, and primary is connected in motor feed circuit,
Installing trouble, increase fault probability and danger, Power convert part is simple linear voltage-stabilizing circuit, and power consumption is big, voltage stabilizing
Ability, adapts to voltage change range little.
Utility model content
The utility model proposes a kind of redundancy phase failure protector, sensitivity and reliability are higher.
The technical solution of the utility model is as follows:
A kind of redundancy phase failure protector, including A, B two-way completely identical in structure open-phase protection module, every line phase-interruption protection electricity
Road all includes MCU, DC reference voltage, three-phase current sensing unit, current/voltage-converted unit, AC/DC voltage stabilizing electricity
Source, local alarm unit, running voltage output unit, the electric current that wherein three-phase current sensing unit obtains is through current/voltage
Converting unit forms voltage drop, superposes formation pulsating direct current with described DC reference voltage, then is transferred into MCU through A/D,
MCU is made whether the judgement of phase shortage according to the threshold value set, and output corresponding signal is defeated to local alarm unit and running voltage
Go out unit；Separately there is a real-time monitoring module, mainly by warning MCU, remote alert unit and output combining unit, report to the police
MCU Real-time Collection A, B two be the input signal of local alarm unit described in line phase-interruption protection module, carries out logical "or"
Outputing signal to remote alert unit after computing, A, B two is worked described in line phase-interruption protection module electricity by output combining unit
The output voltage of pressure output unit exports to drive load-relay after carrying out logical "or" computing.
On the basis of above scheme, this utility model has made following optimization the most further:
AC/DC regulated power supply exports the DC voltage of two kinds of amplitudes, and the first is respectively supplied to MCU and local alarm unit,
The second is supplied to running voltage output unit.
A, the B two AC/DC regulated power supply in line phase-interruption protection module takes from different line voltage.
Warning MCU is combined power supply by the first DC voltage in line phase-interruption protection module of A, B two.
Every line phase-interruption protection module has four LED, indicates respectively the DC voltage of two kinds of amplitudes, phase shortage and output state.
MCU in every line phase-interruption protection module is a SOC(system on a chip), comprises A/D, internal clocking, internal reset and interior
Portion house dog.
In output combining unit, the two-way running voltage of input is respectively through carrying out logical "or" fortune after reverse-filling diode again
Calculate.
This utility model has the advantages that
The open phase detection of two-way isomorphism and time are controlled to be integrated together by this redundancy phase failure protector, real-time monitoring module supervise
Superintend and direct the work of two-way phase breaking alarm circuit, make comprehensive descision, drive on-the-spot LED and remote alarms.
Two-way open-phase protection circuit each includes independent 24V and 5V DC source, current transformer, high-performance MCU,
This MCU, containing circuit such as A/D, internal clocking, internal reset, internal house dogs, is a SOC (SOC(system on a chip)), adopts
With 16 foot SOC encapsulation, therefore external circuit simplifies, and reliability improves.
The electric current that current transformer senses is transferred to and flows through ohmically voltage drop on hardware by open-phase detection circuit, then with 2.5V
DC reference voltage superposition forms pulsating direct current, is directly entered the A/D input of MCU.Numerical integration is used to calculate on software
Method calculates the average voltage in a cycle, according to the judgement measuring the threshold value obtained in advance and being made whether phase shortage.Algorithm anti-interference
Can be good, detect sensitive, can the load current of sensitive 0.3A-10A.
The output of two-way open-phase detection circuit merges output by reverse-filling diode, as long as a road function normally can complete to break
Phase defencive function.
Real-time monitoring module gathers No. four DC sources and the state of two-way open-phase detection circuit, drives when there being abnormal parameters and continues
Electrical equipment action, carries out remote alarms, and the most on-the-spot LED synchronizes to report to the police.For improving real-time monitoring module warning circuit reliability,
This module is combined power supply by two-way 5V power supply, as long as a road power supply normally gets final product work, two-way power supply all lost efficacy, and automatically reported
Alert.
Accompanying drawing explanation
Fig. 1 is principle assumption diagram of the present utility model.
Fig. 2 is the structural representation of AC/DC regulated power supply in this utility model.
Fig. 3 is current sense in this utility model, current/voltage conversion and the structural representation of A/D importation.
Fig. 4 a and Fig. 4 b is respectively in this utility model the structural representation of local alarm unit.
Fig. 5 is this utility model medium-long range alarm unit and the structural representation of state instruction thereof.
Fig. 6 is the structural representation exporting combining unit in this utility model.
Detailed description of the invention
As it is shown in figure 1, this redundancy phase failure protector is mainly by A, B two-way completely identical in structure open-phase protection module and output
Merge, integrated alarm circuit forms.A, B two line phase-interruption protection module be all Full Featured and relatively independent, it includes
Three-phase current sensing, current/voltage-converted, DC reference voltage superposition, A/D conversion and duty judge (can with conversion
Realized by conventional software), wide scope AC/DC regulated power supply, local report to the police, DC24V running voltage exports and work
Several part such as selection of time.The ac working power supply of two-way takes from different line voltage, to improve overall reliability.
MCU (C) monitors A, B two duty of line phase-interruption protection module, the feelings such as phase shortage, power-off, logical error is occurring
Remote alarm signal is produced under condition.The DC supply of MCU (C) by A, B two the DC5V of module comprehensively provide, only
Yao You mono-road is normal it is ensured that work.
The DC24V running voltage output of A, B two-way merges with the relation of logical "or", as long as there being the road logic to be normally
Can guarantee that driving load-relay.
When two-way logic function is all normal, normal circuit operation, without local and remote warning.
During the normal road exception in one road, having remotely and report to the police in a road, circuit can normally work, and the time does not limits.
Two-way is all abnormal, has two-way this locality to report to the police and remote alarms, and circuit does not works.
Introduce circuit design and the feature of each major part in detail below:
One, wide scope input doubleway output regulated power supply
As in figure 2 it is shown, this partial circuit is by tradition power frequency supply transformator, full-bridge rectifier, capacitive filter and LM317
Linear voltage stabilization integrated circuit forms.The AC/DC that tradition power frequency supply transformator, full-bridge rectifier, capacitive filter are constituted
Step-down rectifying circuit simple in construction, insensitive to power high-order harmonic generation, anti-overload ability is strong, is particularly suitable for the electricity that railway is complicated
Compression ring border.LM317 linear voltage stabilization Application of integrated circuit is ripe, has perfect defencive function, and input voltage range is more than 78XX
The series three fixed stably depressors of end, voltage regulation performance is better than the 78XX series three fixed stably depressors of end, and anti-overload ability is strong, therefore may be used
Realizing wide range input, when actual measurement input change in the range of AC220V-440V, output pulsation is less than 0.2V,
If relaxing output pulsation requirement, input voltage range can expand.DC5V DC24V turns DC5V switch power module
Produce.Owing to its conversion efficiency is high, reduce LM317 load current.
Two, current sense, current/voltage conversion input with A/D
As it is shown on figure 3, the electric current of current transformer sensing transfers to flows through ohmically voltage drop, this voltage is alternating voltage,
MCU cannot be directly inputted.It is superposed formation pulsating direct current, so that it may be directly entered MCU with 2.5V DC reference voltage
A/D input.Use numerical integration algorithm to calculate the average voltage in a cycle on software, obtain according to measurement in advance
Threshold value is made whether the judgement of phase shortage.Algorithm good in anti-interference performance, detects sensitive, can the load electricity of sensitive 0.5A-10A
Stream.Change software and just can change current sense scope and size.Numerical integration algorithm is used to calculate the average of a cycle on software
Voltage, according to the judgement measuring the threshold value obtained in advance and being made whether phase shortage.
Three, MCU
Selected MCU, containing circuit such as A/D, internal clocking, internal reset, internal house dogs, is that a SOC (is on sheet
System), just need not can run program by any outer member.Using 16 foot SOC encapsulation, therefore volume is little, and external circuit simplifies,
Reliability improves.
Four, report to the police and duty indicates
As shown in Fig. 4 a, Fig. 4 b and Fig. 5, A, B two the every road of line phase-interruption protection module have 4 LED, indicate respectively DC5V,
DC24V, phase shortage and output state.LEDBJ works asynchronously with remote alarms relay, and instruction has remote alarms.
Five, the merging of selection of time and output 24V running voltage
As shown in Figure 6, the output of two line phase-interruption protection modules merges output by reverse-filling diode, as long as a road function is just
Often can complete phase failure protection function.Output time is selected to be 9S or 30S by switch S1B.
Six, other measures of power supply reliability are improved
A, B two the AC power supplies of line phase-interruption protection module take from different line voltage, such as modules A B, C phase, then mould
Block B is just by A, B phase.If it is assumed that line voltage 380V, when scarce A phase time, modules A voltage is normal；When scarce C phase time,
Module B voltage is normal；When scarce B phase time, modules A and B voltage are 220V, it is also possible to work.
Warning MCU (C) is combined power supply by two-way 5V power supply, as long as a road power supply normally gets final product work, two-way power supply is all
Lost efficacy then automatic alarm.
Output circuit is combined power supply by two-way DC24V, as long as a road normally gets final product work (Fig. 6).Vback reflected load
Current conditions, has abnormal then warning (such as switching tube damage).
Claims (7)
1. a redundancy phase failure protector, it is characterised in that: include A, B two-way completely identical in structure open-phase protection module,
Every line phase-interruption protection circuit all include MCU, DC reference voltage, three-phase current sensing unit, current/voltage-converted unit,
AC/DC regulated power supply, local alarm unit, running voltage output unit, the electric current that wherein three-phase current sensing unit obtains
Form voltage drop through current/voltage-converted unit, superpose formation pulsating direct current with described DC reference voltage, then through A/D
Being transferred into MCU, MCU and be made whether the judgement of phase shortage according to the threshold value set, output corresponding signal is single to local warning
Unit and running voltage output unit；Separately there is a real-time monitoring module, mainly by warning MCU, remote alert unit and output
Combining unit, warning MCU Real-time Collection A, B two be the input signal of local alarm unit described in line phase-interruption protection module,
Outputing signal to remote alert unit after carrying out logical "or" computing, output combining unit is to A, B two line phase-interruption protection mould
The output voltage of running voltage output unit described in block exports to drive load-relay after carrying out logical "or" computing.
Redundancy phase failure protector the most according to claim 1, it is characterised in that: described AC/DC regulated power supply exports
The DC voltage of two kinds of amplitudes, the first is respectively supplied to MCU and local alarm unit, and the second is supplied to running voltage
Output unit.
Redundancy phase failure protector the most according to claim 2, it is characterised in that: A, B two is in line phase-interruption protection module
AC/DC regulated power supply take from different line voltage.
Redundancy phase failure protector the most according to claim 2, it is characterised in that: described warning MCU is by A, B two
The first DC voltage in line phase-interruption protection module combines power supply.
Redundancy phase failure protector the most according to claim 2, it is characterised in that: every line phase-interruption protection module has four LED,
Indicate respectively the DC voltage of two kinds of amplitudes, phase shortage and output state.
Redundancy phase failure protector the most according to claim 1, it is characterised in that: the MCU in every line phase-interruption protection module
It is a SOC(system on a chip), comprises A/D, internal clocking, internal reset and internal house dog.
Redundancy phase failure protector the most according to claim 1, it is characterised in that: in described output combining unit, input
Two-way running voltage respectively through carrying out logical "or" computing after reverse-filling diode again.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620459045.XU CN205791471U (en) | 2016-05-18 | 2016-05-18 | A kind of redundancy phase failure protector |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620459045.XU CN205791471U (en) | 2016-05-18 | 2016-05-18 | A kind of redundancy phase failure protector |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678337A (en) * | 2017-09-28 | 2018-02-09 | 卡斯柯信号有限公司 | A kind of main control unit structure for being used to control track traffic signal |
| CN108711931A (en) * | 2018-06-25 | 2018-10-26 | 柳州辰天科技有限责任公司 | A kind of three-phase alternating current electric rotating rut machine phase failure protector of controllable composite power supply |
| CN109217254A (en) * | 2018-10-25 | 2019-01-15 | 柳州辰天科技有限责任公司 | The method of electric current charging type Redundant Control goat phase failure protector and Redundant Control |
| CN112018723A (en) * | 2020-10-14 | 2020-12-01 | 四川航天职业技术学院(四川航天高级技工学校) | Phase-failure protector |
-
2016
- 2016-05-18 CN CN201620459045.XU patent/CN205791471U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107678337A (en) * | 2017-09-28 | 2018-02-09 | 卡斯柯信号有限公司 | A kind of main control unit structure for being used to control track traffic signal |
| CN108711931A (en) * | 2018-06-25 | 2018-10-26 | 柳州辰天科技有限责任公司 | A kind of three-phase alternating current electric rotating rut machine phase failure protector of controllable composite power supply |
| CN108711931B (en) * | 2018-06-25 | 2023-08-18 | 柳州辰天科技有限责任公司 | Controllable composite power supply three-phase alternating current electric switch machine phase failure protector |
| CN109217254A (en) * | 2018-10-25 | 2019-01-15 | 柳州辰天科技有限责任公司 | The method of electric current charging type Redundant Control goat phase failure protector and Redundant Control |
| CN112018723A (en) * | 2020-10-14 | 2020-12-01 | 四川航天职业技术学院(四川航天高级技工学校) | Phase-failure protector |
| CN112018723B (en) * | 2020-10-14 | 2021-01-29 | 四川航天职业技术学院(四川航天高级技工学校) | Phase-failure protector |
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