CN107910947A - Programmable power supply fault detect and online switching equipment for spacecraft thermal test - Google Patents
Programmable power supply fault detect and online switching equipment for spacecraft thermal test Download PDFInfo
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- CN107910947A CN107910947A CN201711221243.8A CN201711221243A CN107910947A CN 107910947 A CN107910947 A CN 107910947A CN 201711221243 A CN201711221243 A CN 201711221243A CN 107910947 A CN107910947 A CN 107910947A
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- power supply
- subsystem
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- online switching
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/40—Testing power supplies
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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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 invention discloses a kind of programmable power supply fault detect for spacecraft thermal test and online switching equipment, switch including main control subsystem, power supply outputs state detection subsystem, network state detection subsystem and online subsystem, wherein, power supply outputs state detection subsystem, network state detection subsystem are respectively used to detection power supply output state failure and network state failure, and fault message is passed to online switching subsystem；Online switching subsystem control its internal circuit, is rapidly switched to stand-by power supply by trouble power by the current supply circuit where trouble power, ensures that the power supply of current supply circuit is normal.The equipment of the present invention, greatly improve the automatic detection level of spacecraft thermal test programmable power supply failure, the process cycle of trouble power is shortened, reduces and the overproof risk of spacecraft testing temperature is caused by power failure, improve spacecraft thermal test reliability level.
Description
Technical field
The invention belongs to spacecraft ground test and experimental technique field, and in particular to a kind of for spacecraft thermal test
Programmable power supply fault detect and online switching equipment.
Background technology
Spacecraft thermal vacuum test is as state in spacecraft development process is most complicated, cost is maximum, takes longest examination
Project is tested, it is very high to the reliability requirement of pilot system equipment.Mainly using program-controlled in the simulation of vacuum thermal test Orbital heat flux
Electric power system of the power supply as heating units such as infrared lamp, infrared cage, thin film heaters is big with the output current of programmable power supply
The radiant heat flux of small control heater, the simulation and control of Orbital heat flux are carried out with hot-fluid control mode.It is fast with space technology
Speed development, the requirement to temperature control precision is higher and higher, and also increasingly stringenter to temperature stability requirement, this requires control
System must have degree of regulation height, fast response time, parameter be easy to the spies such as adjustment, flexible and convenient operation, temperature stability be good
Point.At present in heat test, the output state of programmable power supply electric current and voltage is to send instruction by hot-fluid control system to read power supply
What buffer status determined, instruction read access time sets too short then return value distortion, and instruction read access time sets long and can lead
Controlling cycle increase is caused, instruction read access time cannot be accurately bonded with register retaking of a year or grade stabilization time, often result in hot-fluid control
System false alarm, easily causes off one's guard or causes maloperation.On the other hand, due to the processing of existing control system communication abnormality
Mechanism is not perfect enough, and power supply frequently can lead to control system collapse when communicating (network) failure.At this time, power supply maintains current output
It is constant, remote control can not be carried out by computer, temperature control circuit closed-loop control failure, test specimen temperature control, easily triggers control
Warm speed transfinites, high/low temperature overtemperature etc..
At present, in the case where finding power supply output or network failure, using be manually entered between power supply to trouble power into
Row is replaced, and restarts control system, time-consuming at least to need 10 minutes, for spacecraft thermal test, is especially controlled with solar wing 6s
Cycle processed is the thermal vacuum test of representative, and nearly 100 controlling cycles can be caused out of control, easily trigger quality accident.
The content of the invention
Programmable power supply detection and online switching equipment it is an object of the invention to provide a kind of spacecraft thermal test, should
Equipment can be realized to 30 power supply output states and network state detection in the short period of time, and event can be realized in 1s
Hinder automatic switchover of the power supply supplying channels to 2 stand-by power supply supplying channels, polling period is most fast up to 3s, and fault detect rate can
Up to more than 98%, the automatic detection level of programmable power supply failure is lifted, shortens the process cycle of trouble power.
Present invention employs following technical solution：
The programmable power supply detection of spacecraft thermal test and online switching equipment, including the output of main control subsystem, power supply
State-detection subsystem, network state detection subsystem and the subsystem that switches online, wherein, power supply outputs state detection subsystem
For detecting the output state failure of power supply, network state detection subsystem is used to detect network state failure, and will corresponding event
Barrier information passes to online switching subsystem；Online switching subsystem controls its online switching circuit, by event according to switching flow
Current supply circuit where barrier power supply is rapidly switched to stand-by power supply by trouble power, ensures that the power supply of current supply circuit is normal；Master control
Subsystem processed is communicated by existing LAN with PC host computers between master control, realizes power failure monitor and online switching equipment
Remote control operation, it is characterised in that by using the 96 passage A/D sampling modules of PXI/CPCI5488, realize 32
The detection of Agilent N5750 electric power output voltages and output current, using ICMP agreements, realizes and electric power network state is sentenced
It is fixed, and using the relay matrix being made of 10 sets of single-knife dual-close large power switches, 30 are realized electric with Agilent N5750
The current supply circuit passage in source switches to 2 spare Agilent N5750 power supplys automatic on-lines.
Wherein, main control subsystem is mutually tied using PXIJX5010 industry controls cabinet with PXI/CPCI5098 embedded controllers
The mode of conjunction, forms the control core unit of test equipment.
Wherein, power supply outputs state detection subsystem exports output state failure inspection overproof or without output for power supply
Survey, and trouble power information is passed into online switching subsystem.
Further, 64 road A/D sampling channels of the power supply outputs state detection subsystem based on PXI/CPCI5488, pass through
The measurement of power supply rear panel analog programming port analog amount port P24 and P11 pin, is realized to electric power outputting current, output voltage
Detection.
Further, the 32 road DI acquisition channels based on PXI/CPCI5870, by power supply rear panel analog port number
The measurement of word amount port P16, realizes the detection to power work state.
Wherein, electric power network state-detection subsystem uses ICMP agreements, is continuously sent out respectively to detected power supply IP address
Send with receiving 100 data packets (each data packet is made of 32 byte datas), and to its returned data bag with sending data packet
Comparison, send in the setting stand-by period after data packet whether receive the situation of returned data bag, judge electric power network shape
State, and trouble power information is passed into online switching subsystem.
Further, during the network state detection of each cycle, if it is continuous occur not receiving returned data bag and
More than set maximum allowable continual data package dropout number (for example 5 times), then judge that communication disruption failure occurs in power supply；If do not go out continuously
Do not receive returned data bag now and exceed the maximum allowable continual data package dropout number of setting institute, but the packet loss of returned data bag exceedes most
It is big to allow packet loss (packet loss refers in each cycle network detection process, occurs that packet content is inconsistent returns with transmission
Return data packet number and do not receive the sum of quantity of returned data bag with having sent the ratio of data packet number), then judge electricity
Source occurs communicating not smooth failure.
Wherein, switch subsystem after trouble power information is obtained in line, according to switching flow, control the output of its power supply to make
Energy control circuit and online switching circuit, standby electricity is rapidly switched to by the current supply circuit where trouble power by trouble power
Source, ensures that the power supply of current supply circuit is normal.Online switching subsystem mainly exports enabled control circuit and online switching by power supply
Circuit forms.
Further, the enabled control circuit of power supply output is using single-pole double-throw relay control power supply rear panel analog port
The break-make of P1 and P14 pins, enables the output of power supply, network state failure occurs in power supply, can not be closed by sending software instruction
When closing power supply output, then using this modular circuit, power supply output is closed.
Further, online switching circuit is made of 10 set of 12 road single-knife dual-close large power switch, passes through special designing
Connection and switch logic mode, realize the supplying channels of 30 power supplies to any switching laws of No. 2 stand-by power supply supplying channels.
The equipment of the present invention, eliminates and occurs exporting in power supply or during network failure, using being manually entered between power supply pair therefore
Barrier power supply is replaced, and due to the time-consuming long risk for causing controlling cycle out of control, easily triggering quality accident, is greatly improved
The automatic detection level of programmable power supply failure, shortens the process cycle of trouble power, eliminates and cause space flight by power failure
The overproof risk of device test temperature, improves spacecraft thermal test reliability level.
Brief description of the drawings
Fig. 1 is the detection of spacecraft thermal test programmable power supply and the structure diagram of online switching equipment of the present invention；
Fig. 2 is the online enabled control circuit schematic diagram of switching subsystem power supply output of the present invention；
Fig. 3 is the online switching online switching circuit design diagram of subsystem of the present invention；
Fig. 4 is the online switching online switching circuit operating diagram of subsystem of the present invention；
Fig. 5 is the online switching subsystem switching flow figure of the present invention；
Fig. 6 is the equipment work flow diagram of the present invention.
Embodiment
Introduced below is the embodiment as content of the present invention, below by embodiment to this
The content of invention is made further to illustrate.Certainly, the not Tongfang that following detailed description is only the example present invention is described
The content in face, and should not be construed as the limitation scope of the invention.
With reference to Fig. 1, Fig. 1 is the structure diagram of the detection of spacecraft thermal test programmable power supply and online switching equipment.Its
In, which is detected with programmable power supply and online switching equipment, including the inspection of main control subsystem, power supply output state
Subsystem, network state detection subsystem and the subsystem that switches online are surveyed, wherein, power supply outputs state detection subsystem, network
State-detection subsystem is respectively used to detection power supply and exports overproof, job failure without output state failures such as outputs and communicate not
Freely, the network state failure such as communication disruption, and fault message is passed into online switching subsystem；Online switching subsystem according to
Pre research setting switchover policy, control its internal circuit switch logic hardware, by the current supply circuit where trouble power by
Trouble power is rapidly switched to stand-by power supply, ensures that the power supply of current supply circuit is normal；Main control subsystem time passes through existing local
PC upper computer softwares communicate between net and master control, realize the remote control operation of power failure monitor and online switching equipment.
Fig. 2 is the online enabled control circuit schematic diagram of switching subsystem power supply output.Due in spacecraft thermal test, journey
Control power mode be generally constant current mode, for prevent trouble power power supply circuit to stand-by power supply power supply circuit switch when,
Since circuit disconnects, programmable power supply produces instantaneous pressure, and electric spark is produced at loop switch switch, testing equipment is caused to damage
It is bad, experiment safety is influenced, therefore, the trouble power switching mode under all malfunctions is required to change for cold cut, namely in electricity
Source in the case of output without switching over., can be by PC control software to trouble power when power supply is output state failure
Shutdown command is sent, software closes power supply output；When power supply is network state failure, electricity can not be closed by software instruction
Source, then needs to control by the break-make for enabling power supply in power supply rear panel analog port pin at this time, enables or closing power supply is defeated
Go out.As shown in Fig. 2, 32 power supply rear panels including stand-by power supply are controlled using 32 tunnel closed type single-pole double-throw relays
The break-make of analog port P1 and P14 pin, when P1 and P14 is in connected state, enables power supply output；When P1 and P14 is in disconnected
During open state, power supply output is closed.
Fig. 3 is the online switching online switching circuit design diagram of subsystem.It is big that online switching circuit is based on 10 piece of 12 tunnel
Power single-pole double-throw switch (SPDT) module, forms 120 sets of single-pole double throw closed type relay networks.Wherein, every No. 4 single-pole double-throw switch (SPDT)
1 is formed in the online switching circuit with power supply, 2 stand-by power supplies and 1 heating load passage, specific switching circuit schematic diagram
As shown in Figure 4.Online switching circuit is set by the parallel arranged of 120 sets of relays, Shi Mei roads heating unit supplying channels point
Two paths Dui Ying not be being inputted with power input and stand-by power supply, realize 30 road heating load circuits by logical with power supply power supply
Online switching of the road to stand-by power supply supplying channels.To ensure the reliability of relay work, relay contact at least has
The capacity of 150VDC/4ADC.
Fig. 4 is the online switching online switching circuit operating diagram of subsystem.In online switching circuit, every No. 4 hilted broadsword is double
Throw switch forms 1 in the online switching circuit with power supply, 2 stand-by power supplies and 1 heating load passage.As shown in figure 4, i.e.
For the mode of connection of No. 4 single-pole double-throw switch (SPDT)s and the elaboration explanation of operation principle to forming the online switching circuit of smallest size.
Relay number consecutively is S00, S01, S02, S03, relay connection mode and normally-closed contact state in strict accordance with Fig. 4 design into
Row is implemented, it is ensured that load is in normal main part power supply power supply shape under regular situation when not powered work (or the system integrally)
State.Meanwhile because switching backup battery is non-conventional action, the actuating of relay time can be farthest reduced under so designing
Number, so as to improve lifetime of system and reliability.Known Fig. 4 repeat circuits are in normally off, set the normally closed shape of relay
State is expressed as 0, and operating state is expressed as 1, unrelated to be expressed as 2, when the state of relay S00, S01, S02, S03 are respectively 0,2,
When 0,2, load circuit is connected with the current supply circuit of power supply；When the state of relay S00, S01, S02, S03 are respectively 1,
When 0,1,0, load circuit is connected with the current supply circuit of stand-by power supply 1；When the state of relay S00, S01, S02, S03 are respectively
When 1,1,1,1, load circuit is connected with the current supply circuit of stand-by power supply 2.
Fig. 5 is online switching subsystem switching flow figure.With reference to Fig. 5, spacecraft heat is carried out using this equipment in the present invention
Flow when experiment programmable power supply switches mainly includes herein below：
1) subsystem obtains the failure that outputs state detection subsystem and network state detection subsystem detect first
The information such as power supply IP positions, fault type, and two stand-by power supplies are respectively set to the first backup and the second backup battery.
2) according to trouble power and stand-by power supply information, determine the priority of chosen to be switched stand-by power supply, judge
The power supply switching monitoring mode of software design patterns.Wherein, when being chosen to be artificial mode, software interface progress pop-up prompting, and
In software interface heating circuit electric topology graph of a relation to trouble power, by the electric loop of to be switched stand-by power supply, position with
And IP information is highlighted, software waits Field Force to check (if necessary power failure and switchover policy information
Field Force can modify switchover policy information), Field Force is confirmed whether to perform subsequent operation；When being chosen to be automatic mold
During formula, system is while alarm is carried out, it is no longer necessary to artificial nucleus couple, but the follow-up handover operation of automated execution, and
Heating circuit electric topology graph of a relation carries out highlighting for relevant information.
3) output of closing fault power supply.Wherein, when power failure type is output state failure and there is no network-like
During state failure, system software sends to trouble power and closes output order, makes power supply without output；When power failure type is network
During status fault, the output of power supply is closed by exporting enabled control circuit control to power supply at this time.Software is defeated in closing power supply
After going out, add appropriate delay, then switched online, to ensure handover security.
4) online switching circuit is controlled, the heating unit current supply circuit that trouble power is powered is exported by trouble power and is led to
Road switches to chosen stand-by power supply output channel.
5) software interface pop-up is prompted, and waits Field Force by the weight of spacecraft thermal test Orbital heat flux simulation control software
Open.
6) after the completion of aforesaid operations, determine that power supply switch operating terminates in system software, continue the power supply in next cycle
Fault detect.
Fig. 6 is the work flow diagram of the detection of spacecraft thermal test programmable power supply and online switching equipment.With reference to Fig. 6, sheet
Strategy when carrying out spacecraft thermal test with programmable power supply detection and online switching using this equipment in invention mainly includes following
Content：
1) before equipment starts work, equipment carries out the loading of database module information, the tune of Hardware drive module first
Initialized with Hardware drive module, the reading of the interface document information of Orbital heat flux control system and relative parameters setting.
2) fault detect of equipment startup power supply works, and before first entering detection cycle, need to determine to receive Orbital heat flux control system
" calculating current has refreshed " signal of system.
3) in each detection cycle, power supply output state and network state failure are detected successively, and failure judgement
Power supply status, if power supply performs the online handover operation of power supply there are failure according to power supply switchover policy；If power supply fault-free,
Then it is transferred to next fault detect cycle.
4) any moment in equipment fault detection cycle, when equipment receives " the control week of Orbital heat flux control system
Phase has been turned on " signal, then halt device fault detect work, treat device software receive Orbital heat flux control software " calculate
Electric current has refreshed " signal when, be again started up equipment fault detection work.
5) detection of end cycle, equipment are stopped.
Although giving detailed description and explanation to the embodiment of the present invention above, it should be noted that
We can carry out the above embodiment various equivalent changes and modification according to the conception of the present invention, its caused function is made
, should all be within protection scope of the present invention during with the spirit still covered without departing from specification and attached drawing.
Claims (8)
1. programmable power supply fault detect and online switching equipment for spacecraft thermal test, including main control subsystem, power supply
Outputs state detection subsystem, network state detection subsystem and the subsystem that switches online, wherein power supply outputs state detection point
System, network state detection subsystem are respectively used to the detection of power supply output state and network state failure, and by fault message
Online switching subsystem is passed to, the online subsystem that switches controls online switching circuit according to switching flow, realizes trouble power
The current supply circuit at place is rapidly switched to stand-by power supply by trouble power, ensures that the power supply of current supply circuit is normal, and main control point is
The communication united by PC host computers between master control, realizes the remote control operation of power failure monitor and online switching equipment, its
It is characterized in that, by 96 passage A/D sampling modules, can realizes the detection of 32 electric power output voltages and output current, uses
ICMP agreements, realize the judgement to electric power network state, and using the relay being made of 10 sets of single-knife dual-close large power switches
Matrix, realizes that 30 switch with the current supply circuit passage of power supply to 2 stand-by power supply automatic on-lines.
2. programmable power supply fault detect as claimed in claim 1 and online switching equipment, wherein, main control subsystem uses
The mode that PXIJX5010 industry controls cabinet and PXI/CPCI5098 embedded controllers are combined, forms the control core of test equipment
Heart unit.
3. programmable power supply fault detect as claimed in claim 1 and online switching equipment, wherein, power supply outputs state detection point
System is used for power supply and exports overproof or without output output state fault detect, and trouble power information is passed to online switching
Subsystem.
4. programmable power supply fault detect as claimed in claim 3 and online switching equipment, wherein, power supply outputs state detection point
64 road A/D sampling channels of the system based on PXI/CPCI5488, pass through power supply rear panel analog programming port analog amount port P24
With the measurement of P11 pins, the detection to electric power outputting current, output voltage is realized；The 32 road DI based on PXI/CPCI5870 at the same time
Acquisition channel, by the measurement to power supply rear panel analog port digital quantity port P16, realizes the inspection to power work state
Survey.
5. programmable power supply fault detect as claimed in claim 1 and online switching equipment, wherein, electric power network state-detection point
System uses ICMP agreements, continuously sends and receives 100 data packets respectively to detected power supply IP address, and return to number to it
According to the feelings that returned data bag whether is received in the setting stand-by period after the comparison of bag and transmission data packet, transmission data packet
Condition, judges electric power network state, and trouble power information is passed to online switching subsystem.
6. programmable power supply fault detect as claimed in claim 5 and online switching equipment, wherein, electric power network state-detection point
System is during the network state detection of each cycle, if continuous occur not receiving returned data bag and exceed set maximum
Allow continual data package dropout number, then judge that communication disruption failure occurs in power supply；If not continuous occur not receiving returned data Bao Chao
The maximum allowable continual data package dropout number of setting institute is crossed, but the packet loss of returned data bag exceedes maximum allowable packet loss, then judges electricity
Source occurs communicating not smooth failure.
7. programmable power supply fault detect as claimed in claim 1 and online switching equipment, wherein, the online subsystem that switches is obtaining
After taking trouble power information, according to switching flow, the enabled control circuit of its power supply output and online switching circuit are controlled, by failure
Current supply circuit where power supply is rapidly switched to stand-by power supply by trouble power, ensures that the power supply of current supply circuit is normal.
8. programmable power supply fault detect as claimed in claim 7 and online switching equipment, wherein, online switching subsystem is main
Enabled control circuit is exported by power supply and online switching circuit forms, the wherein enabled control circuit of power supply output uses single-pole double throw
The break-make of power source for relay control rear panel analog port P1 and P14 pin, enables the output of power supply；Online switching circuit is by 10 sets
12 road single-knife dual-close large powers switch compositions, by specifically connecting and switch logic mode, realize the confession of 30 power supplies
Any switching laws of the electric channel to No. 2 stand-by power supply supplying channels.
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| CN201711221243.8A CN107910947B (en) | 2017-11-29 | 2017-11-29 | Program-controlled power failure detection and online switching equipment for spacecraft thermal test |
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| CN201711221243.8A CN107910947B (en) | 2017-11-29 | 2017-11-29 | Program-controlled power failure detection and online switching equipment for spacecraft thermal test |
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| CN109901084A (en) * | 2019-02-25 | 2019-06-18 | 南京邮电大学 | A kind of Real-Time Switch power supply monitoring and control system based on UDP |
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