CN107546725B - A kind of spacecraft discharge circuit overvoltage protective system - Google Patents
A kind of spacecraft discharge circuit overvoltage protective system Download PDFInfo
- Publication number
- CN107546725B CN107546725B CN201710689538.1A CN201710689538A CN107546725B CN 107546725 B CN107546725 B CN 107546725B CN 201710689538 A CN201710689538 A CN 201710689538A CN 107546725 B CN107546725 B CN 107546725B
- Authority
- CN
- China
- Prior art keywords
- circuit
- delay
- high level
- voltage
- trigger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Emergency Protection Circuit Devices (AREA)
Abstract
The present invention provides a kind of spacecraft discharge circuit overvoltage protective system, including busbar voltage sample circuit, bus overvoltage delay trigger circuit, signal lock circuit, autonomous reset circuit and the execution circuit connecting respectively with discharge circuit；When the execution circuit receives the high level of the trigger output, the discharge circuit loop of power circuit and signal control circuit are cut off.Spacecraft provided by the invention discharge circuit overvoltage protective system, simple equipments, practicability are high, and overcoming existing discharge circuit can not restore automatically, cross the problem that pressure point setting is difficult and response speed is slow, improve the reliability and safety of discharge circuit.
Description
Technical field
The present invention relates to circuit overvoltage protection field, in particular to a kind of spacecraft discharge circuit overvoltage protective system.
Background technique
It is a kind of DC/DC translation circuit that spacecraft, which adjusts circuit with electric discharge, by the energy of battery group by transformation, output
It is suitble to the voltage source of spacecraft demand, is component part important in spacecraft power supply subsystem.According to spacecraft energy demand
With reliability design requirement, discharge circuit generally uses multichannel to adjust operating mode (the multipath hot backup work that circuit in parallel exports
Operation mode).Device in discharge circuit due to the electronic environment (single-particle overturn control chip) of spatial complex or after operation many years
Functional deterioration, the electric discharge of certain road adjust circuit and output overvoltage failure occur, such as cut off the faulty circuit not in time, will lead to whole mother
Line output overvoltage causes secondary damage to spacecraft rear class electrical equipment, therefore multichannel electric discharge adjusts setting for circuit in parallel power supply
It needs to design overvoltage crowbar in meter.
Spacecraft electric discharge at present adjusts the overvoltage crowbar of circuit, using single channel output voltage and reference voltage directly into
The working method that row compares, there are three disadvantages for this mode: first is that the electronic environment of spatial complex, there are high energy particles to overturn control
Coremaking piece causes electric discharge to adjust the concussion of circuit busbar electric voltage over press, and overvoltage protection locking electric discharge adjusts circuit, which exits power supply
No longer restore, needs ground artificial intervention that could restore to work normally；Second is that crossing the setting of pressure point difficulty, setting is excessively high to be adjusted electric discharge
Circuit rear class power unit impacts, and crosses pressure point and the too low malfunction for easily causing overvoltage crowbar is arranged；Third is that over-voltage
It protects response speed slow, before so that faulty circuit is not entered overvoltage protection state, has entered overcurrent or current limliting operating mode, made to discharge
Adjust the overvoltage protection failure of circuit.
Summary of the invention
The purpose of the present invention is to provide a kind of spacecraft discharge circuit overvoltage protective systems, to solve existing electric discharge
Adjusting circuit can not restore automatically, cross the problem that pressure point setting is difficult and response speed is slow.
In order to solve the above-mentioned technical problem, the technical scheme is that providing a kind of spacecraft discharge circuit over-voltage
Protection system, including busbar voltage sample circuit, bus overvoltage trigger circuit, the semaphore lock electricity being connect respectively with discharge circuit
Road, the autonomous reset circuit of delay and execution circuit；
The busbar voltage sample circuit includes sampling resistor network and voltage follower；The sampling resistor network will be female
Line voltage is scaled 1/10th of initial value；Busbar voltage after scaling is by voltage follower, into late-class circuit；
The bus overvoltage trigger circuit includes trigger circuit and the first delay circuit；Comparator is electric by the bus after scaling
Pressure is compared with setting voltage threshold, and busbar voltage is greater than setting voltage threshold, then comparator exports high level；Comparator is defeated
The duration of high level out is more than the delay time of setting, then sends high level to signal lock circuit；
The signal lock circuit includes trigger；The set end of the trigger receives the bus overvoltage trigger circuit
After the high level of transmission, output end exports high level；When the reset terminal of the trigger receives high level, output end is again defeated
Low level out；
The time-delay reset circuit includes reset circuit, counter and the second delay circuit；Busbar voltage warp after scaling
After crossing the delay of the second delay circuit, be compared with bus reset threshold, if busbar voltage be lower than setting value, comparator to
Counter exports high level, and counter exports high level to the signal lock circuit；
When the execution circuit receives the high level of trigger output, cut off the discharge circuit loop of power circuit and
Signal control circuit.Further, the discharge circuit is SUPER-BUCK topology reduction voltage circuit.
Further, the trigger is CD4013.
Further, the time-delay reset circuit, after resetting five times, if the still over-voltage of discharge circuit voltage, discharge electricity
Road stops power supply, and ground artificial is needed to send reset instruction.
Further, the execution circuit includes electromagnetic relay and two-way level-conversion circuit.
Spacecraft provided by the invention discharge circuit overvoltage protective system, simple equipments, practicability are high, overcome existing
Electric discharge adjust circuit and can not restore automatically, cross the problem that pressure point setting is difficult and response speed is slow, improve discharge circuit can
By property and safety.
Detailed description of the invention
Invention is described further with reference to the accompanying drawing:
Fig. 1 is discharge power schematic block circuit diagram in the embodiment of the present invention；
Fig. 2 is median generatrix of embodiment of the present invention voltage sampling circuit；
Fig. 3 is median generatrix of embodiment of the present invention over-voltage trigger circuit；
Fig. 4 is signal lock circuit in the embodiment of the present invention；
Fig. 5 is the autonomous reset circuit that is delayed in the embodiment of the present invention；
Fig. 6 is execution circuit in the embodiment of the present invention.
Specific embodiment
Spacecraft proposed by the present invention discharge circuit overvoltage protective system is made below in conjunction with the drawings and specific embodiments
It is further described.According to following explanation and claims, advantages and features of the invention will be become apparent from.It should be noted
It is that attached drawing is all made of very simplified form and using non-accurate ratio, only to facilitate, lucidly aid in illustrating this hair
The purpose of bright embodiment.
Discharge power schematic block circuit diagram of the invention is as shown in Figure 1, be SUPERBUCK topological circuit structure, by inputting
PMOS tube, inductance 1, inductance 2, voltage adjust NMOS tube, power diode, output capacitance battle array, MEA circuit, and circuit occurs for PWM wave
(SG1525) composition such as.Circuit occurs for MEA circuit acquisition process busbar voltage, output level to PWM wave, and SG1525 is according to input
Level signal generate PWM wave control NMOS tube on-off, accumulator battery voltage is transformed to the voltage of spacecraft demand.
Fig. 2 is busbar voltage sample circuit of the invention, and busbar voltage is reduced ten times (U1) by sampling resistor network, is reduced
Busbar voltage U1 afterwards passes through voltage follower, gives late-class circuit level signal.
Fig. 3 is bus overvoltage trigger circuit of the invention, is made of over-voltage trigger circuit and time delay integration circuit.Electric discharge is adjusted
Save circuit output busbar voltage range: Umin~Umax, median generatrix electric voltage over press threshold value of the present invention is set as UmaxVoltage value is very
One of (Uref1).Busbar voltage U1With Uref1It compares, if U1 is greater than Uref1, it (is here 11V) that comparator, which exports high level,.
If U1 is greater than Uref1Duration be greater than 40ms, capacitor charging of the high level that comparator exports to time delay integration circuit
(resistance 3K, diode BZ1D, capacitor 1uF and resistance 120K composition), time delay integration circuit output high level to trigger signal is extremely
Signal lock circuit.
Fig. 4 is signal lock circuit of the invention, is mainly made of trigger CD4013.System electrification moment, reset terminal R
For 12V, output end Q default output ground level.After the set end S of trigger CD4013 receives high level, output end Q output is high
Level simultaneously keeps often high, and after only reset terminal R receives high level, output end Q just exports low level.
Fig. 5 is the autonomous reset circuit of delay of the invention, is made of reset circuit and counting circuit.System electrification moment,
The reset terminal RE of counter CD4022 is 12V, and counter CD4022 defaults Vo0Export high level.Electric discharge adjusts circuit output bus
Voltage range: Umin~Umax, the present invention in discharge circuit bus resetting voltage threshold value be set as Umin/ 10th of voltage value
(Uref2).Busbar voltage U1By 10s delay (resistance 300K and capacitor 10uF composition), busbar voltage U1With Uref2It compares, such as
Fruit U1 is less than Uref2, it (is here 11V), the clock end CLK of counter CD4022 receives a height that comparator, which exports high level,
Level, counter CD4022Vo1Output high level, Vo0It is low level with other output ends.The clock end of counter CD4022
CLK often receives a high level, and output high level moves back (a Vo0→Vo1→Vo2→Vo3→Vo4→Vo5), the present invention is set
Having set can reset 5 times.After resetting 5 times, electric discharge adjusts circuit output voltage still over-voltage, and discharge circuit stops power supply, needs at this time
Ground artificial is wanted to send reset instruction, electric discharge, which adjusts circuit, could restore normal power supply.
Fig. 6 is execution circuit of the invention, is made of electromagnetic relay and two-way level-conversion circuit, electromagnetic relay connects
After receiving high level, normally opened contact 1 is closed, and normally-closed contact 2 disconnects.After contact 1 is closed, the upper end resistance 5.1K voltage is become from 0V
5V, 5V level give PWM chip circuit SG1525, export 11 feet of SG1525 and 14 feet without PWM wave.After contact 2 disconnects, three poles
Pipe Q1 is disconnected, and the E foot of triode Q2 exports the G foot of 0.7V voltage lower than accumulator battery voltage to PMOS tube, and PMOS tube shutdown is cut
Disconnected discharge circuit power input.
Obviously, those skilled in the art can carry out various changes and deformation without departing from essence of the invention to the present invention
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (4)
1. a kind of spacecraft discharge circuit overvoltage protective system, which is characterized in that including the mother being connect respectively with discharge circuit
Line voltage sample circuit, bus overvoltage delay trigger circuit, signal lock circuit, the autonomous reset circuit of delay and execution circuit；
The busbar voltage sample circuit includes sampling resistor network and voltage follower；The sampling resistor network is electric by bus
Pressure is scaled 1/10th of initial value；Busbar voltage after scaling is by voltage follower, into late-class circuit；
The bus overvoltage delay trigger circuit includes trigger circuit and the first delay circuit；By after scaling busbar voltage with set
Constant voltage threshold value is compared, and busbar voltage is greater than setting voltage threshold, then comparator exports high level；The height of comparator output
The duration of level is more than the delay time of setting, then sends high level to signal lock circuit；
The signal lock circuit includes trigger；The set end of the trigger receives the bus overvoltage delay trigger circuit
After the high level of transmission, output end exports high level；When the reset terminal of the trigger receives high level, output end is again defeated
Low level out；
The autonomous reset circuit of delay includes reset circuit, counter and the second delay circuit；Busbar voltage warp after scaling
After crossing the delay of the second delay circuit, be compared with bus reset threshold, if busbar voltage be lower than setting value, comparator to
Counter exports high level, and counter exports high level to the signal lock circuit；
When the execution circuit receives the high level of the trigger output, the discharge circuit loop of power circuit and signal are cut off
Control circuit.
2. spacecraft as described in claim 1 discharge circuit overvoltage protective system, which is characterized in that the first delay electricity
Road, the delay circuit can accumulate the concussion time that busbar voltage is greater than the set value, if the concussion time is less than setting time, triggering
The high level signal of circuit is shielded.
3. spacecraft as described in claim 1 discharge circuit overvoltage protective system, which is characterized in that the delay is autonomous multiple
Position circuit, system automatically resets after busbar voltage triggers overvoltage protection, after resetting five times, if discharge circuit busbar voltage still mistake
Pressure, discharge circuit stop power supply, and ground artificial is needed to send reset instruction.
4. spacecraft as described in claim 1 discharge circuit overvoltage protective system, which is characterized in that the execution circuit packet
Include electromagnetic relay and two-way level-conversion circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689538.1A CN107546725B (en) | 2017-08-11 | 2017-08-11 | A kind of spacecraft discharge circuit overvoltage protective system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710689538.1A CN107546725B (en) | 2017-08-11 | 2017-08-11 | A kind of spacecraft discharge circuit overvoltage protective system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107546725A CN107546725A (en) | 2018-01-05 |
| CN107546725B true CN107546725B (en) | 2019-04-12 |
Family
ID=60971223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710689538.1A Active CN107546725B (en) | 2017-08-11 | 2017-08-11 | A kind of spacecraft discharge circuit overvoltage protective system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107546725B (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109039064B (en) * | 2018-07-20 | 2020-06-02 | 上海空间电源研究所 | Shunting adjusting device for preventing short circuit of single power supply diode of spacecraft |
| CN111443629B (en) * | 2020-04-02 | 2021-09-10 | 南京理工大学 | Power supply and control circuit applied to cube star brake sail |
| CN112054483B (en) * | 2020-08-04 | 2022-09-27 | 上海空间电源研究所 | Simple high-reliability overvoltage protection circuit |
| CN112034317B (en) * | 2020-08-31 | 2023-11-28 | 国网山东省电力公司电力科学研究院 | Oscillating partial discharge voltage locking circuit, partial discharge test system and working method |
| CN112217429B (en) * | 2020-09-29 | 2022-04-19 | 西安微电子技术研究所 | Brushless motor driving circuit and method |
| CN112421714B (en) * | 2020-11-06 | 2023-02-21 | 上海空间电源研究所 | Current-limiting control method of discharge regulator for satellite |
| CN115184724B (en) * | 2022-06-29 | 2023-06-23 | 南通通成自动化技术有限公司 | Abnormal voltage detection circuit for power distribution room |
| CN115207877B (en) * | 2022-09-15 | 2022-12-02 | 江苏广识电气有限公司 | Automatic power switching circuit of electrical equipment |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1169785A (en) * | 1997-08-27 | 1999-03-09 | Hitachi Ltd | Power supply circuit |
| CN1212521A (en) * | 1997-09-03 | 1999-03-31 | 索尼公司 | Digital controlled oscillation circuit and PLL circuit |
| CN201623482U (en) * | 2009-12-28 | 2010-11-03 | 中国航空工业集团公司第六三一研究所 | UUT (Unit Under Test) protection circuit |
| CN102386653A (en) * | 2006-10-05 | 2012-03-21 | 日本电信电话株式会社 | Discharger and discharger control method |
| CN103545785A (en) * | 2013-10-25 | 2014-01-29 | 上海臻和防雷电气技术有限责任公司 | Power supply MOV surge protection device failure fault current cyclic wave monitoring device and method |
| CN204154882U (en) * | 2014-08-06 | 2015-02-11 | 中国电子科技集团公司第三十八研究所 | The sampling of a kind of power supply noble potential fault and holding circuit |
| CN104410038A (en) * | 2014-10-21 | 2015-03-11 | 上海空间电源研究所 | Overvoltage protection circuit for discharge regulating circuit |
| CN106249803A (en) * | 2016-09-30 | 2016-12-21 | 上海空间电源研究所 | Solaode power control circuit based on MPPT |
| CN106300275A (en) * | 2016-09-26 | 2017-01-04 | 辉芒微电子（深圳）有限公司 | A kind of BUCK drive circuit, power supply chip and application thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013211974A (en) * | 2012-03-30 | 2013-10-10 | Renesas Electronics Corp | Semiconductor device for battery control, and battery pack |
-
2017
- 2017-08-11 CN CN201710689538.1A patent/CN107546725B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1169785A (en) * | 1997-08-27 | 1999-03-09 | Hitachi Ltd | Power supply circuit |
| CN1212521A (en) * | 1997-09-03 | 1999-03-31 | 索尼公司 | Digital controlled oscillation circuit and PLL circuit |
| CN102386653A (en) * | 2006-10-05 | 2012-03-21 | 日本电信电话株式会社 | Discharger and discharger control method |
| CN201623482U (en) * | 2009-12-28 | 2010-11-03 | 中国航空工业集团公司第六三一研究所 | UUT (Unit Under Test) protection circuit |
| CN103545785A (en) * | 2013-10-25 | 2014-01-29 | 上海臻和防雷电气技术有限责任公司 | Power supply MOV surge protection device failure fault current cyclic wave monitoring device and method |
| CN204154882U (en) * | 2014-08-06 | 2015-02-11 | 中国电子科技集团公司第三十八研究所 | The sampling of a kind of power supply noble potential fault and holding circuit |
| CN104410038A (en) * | 2014-10-21 | 2015-03-11 | 上海空间电源研究所 | Overvoltage protection circuit for discharge regulating circuit |
| CN106300275A (en) * | 2016-09-26 | 2017-01-04 | 辉芒微电子（深圳）有限公司 | A kind of BUCK drive circuit, power supply chip and application thereof |
| CN106249803A (en) * | 2016-09-30 | 2016-12-21 | 上海空间电源研究所 | Solaode power control circuit based on MPPT |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107546725A (en) | 2018-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107546725B (en) | A kind of spacecraft discharge circuit overvoltage protective system | |
| CN104518564A (en) | Backup automatic switching apparatus with area automatic switching function, and backup automatic switching method | |
| CN104201641A (en) | Intrinsically safe circuit for improving capacitive load start capacity | |
| CN103618377A (en) | Automatic bus transfer equipment system and automatic bus transfer method used for transformer substation to which small power supply is connected | |
| CN204144918U (en) | The DC circuit breaker that a kind of high frequency switch power supply system uses | |
| CN205544206U (en) | Intelligence PT harmonic elimination selects device of looks | |
| CN103618285B (en) | A kind of overcurrent excess voltage protection for 4-20mA current input circuit | |
| CN202651781U (en) | Neutral point integrated grounding complete device | |
| CN106329509B (en) | The small current earthing wire-selecting of neutral point of electric network isolated neutral system protects system | |
| CN105162096A (en) | Protection device and protection method for current collecting line of wind power plant | |
| CN204244099U (en) | A kind of connection in series-parallel modular power supply converting means | |
| EP3721519A1 (en) | Fail-safe operating method for a local power generation plant | |
| CN104659784A (en) | Device for suppressing voltage fluctuation of bus in transformer substation and voltage fluctuation suppression method | |
| CN103762557A (en) | Device and method for open-circuit-resistant protection of current transformer | |
| CN103384062A (en) | Isolation control system of grid power distribution fault detection | |
| CN104749453B (en) | Reduce the method that outer net singlephase earth fault influences user's voltage dip | |
| CN203481822U (en) | Closed loop power supply model of medium voltage 10 kilovolt power distribution network | |
| CN203301223U (en) | Rapid power supply switching device | |
| CN107678478B (en) | Circuit and method for monitoring working state of secondary neutral point valve plate of voltage transformer | |
| CN204349424U (en) | Microcomputer transformer backup protection loop | |
| CN104734117B (en) | A kind of breaker fail protection method of substation | |
| CN206542181U (en) | Intelligent non-pressure release coil controller | |
| EP2880731B1 (en) | Fault identification in an energy supply network with decentralised energy feeding | |
| CN208508516U (en) | A kind of AC power source surge protective device and electronic equipment | |
| CN207200251U (en) | A kind of power distribution network self-powered protective relaying device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |