CN103984401A - Embedded self real-time monitoring and removing device for single event latchup (SEL) of space computer - Google Patents
Embedded self real-time monitoring and removing device for single event latchup (SEL) of space computer Download PDFInfo
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- CN103984401A CN103984401A CN201410206383.8A CN201410206383A CN103984401A CN 103984401 A CN103984401 A CN 103984401A CN 201410206383 A CN201410206383 A CN 201410206383A CN 103984401 A CN103984401 A CN 103984401A
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Abstract
The invention discloses an embedded self real-time monitoring and removing device for single event latchup (SEL) of a space computer. The device comprises an SEL state signal collection circuit, an SEL state signal processing circuit, an SEL remote measuring signal, a partition CPU (central processing unit) 5, a hysteresis comparer, an SEL removing driving circuit and an electronic switch device 8. The real-time monitoring and control on the SEL of the space computer is realized, when the space computer is subjected to the SEL in space, the latchup area can be fast positioned by the partition CPU, the power supply for the latchup area is disconnected by controlling the SEL removing driving circuit and the electronic switch device, so devices and a printed wire are protected from being damaged by the latchup, and the normal power supply for the area can be restored. In the process of restoring the normal power supply, only partial functions of the space computer cannot be used without influencing other modules of the space computer, and the influence is reduced to the lowest.
Description
Technical field
The invention belongs to embedded space computer single event latch-up technical field, relate to the autonomous Real-Time Monitoring of a kind of embedded space computer single event latch-up and decontrol.
Background technology
At present space computer single event latch-up generally adopts the method for resistance or restrictor subregion current limliting, when space computer power supply zone generation single event latch-up, prevents that super-high-current from burning device and supply line, by current limit in a certain safe range.After single event latch-up, release method generally adopts the power supply that disconnects unit product by relay.Current this single event latch-up safeguard measure, could find when only talented product function is abnormal, and real-time extreme difference, easily the in the situation that of single event latch-up, because of the oversize product that burns of super-high-current time.
Application number is that in 200710118543.3 Chinese invention patent, it is disclosed is a kind of monitoring and release method of plate level, by combinational logic circuit, controls.Once there is a kind of device generation single event latch-up of Power supply in the method, other power supplies can be disconnected, the impact bringing to system is larger.On the other hand, in this patent of invention, if because other reasons causes the large electric current causing for electrical short, can cause that short circuit power supply ceaselessly powers on/off, in oscillatory regime.Once and in spacecraft transmitting, ground cannot be controlled this partial circuit.
Summary of the invention
The problem that the present invention solves is to provide the autonomous Real-Time Monitoring of a kind of embedded space computer single event latch-up and decontrol, can not be by the defect of Real-Time Monitoring to solve space computer single event latch-up, thus avoid bringing infringement to product.
The present invention is achieved through the following technical solutions:
The autonomous Real-Time Monitoring of embedded space computer single event latch-up and a decontrol, comprising:
SEL state signal collecting circuit, monitors the size of current of coupled power supply zone, and monitored current signal is converted into voltage signal, also voltage signal is sent to SEL status signal treatment circuit;
SEL status signal treatment circuit, amplifies processing by the voltage signal receiving, and the voltage signal amplifying after processing is sent to respectively to SEL telesignalisation receiver module and hysteresis comparator;
Subregion CPU, SEL telesignalisation receiver module sends to subregion CPU using the signal receiving as SEL telesignalisation, subregion CPU Real-Time Monitoring single event latch-up signal is removed driving circuit to SEL and is sent the control signal of turn-offing electronic switching device when producing single event latch-up signal; After sending the control signal of turn-offing electronic switching device, subregion CPU starts timer, and set time T1 backward SEL in interval removes driving circuit and transmits control signal, and reopens electronic switching device, recovers the power supply to load;
Hysteresis comparator, compares the voltage signal receiving and threshold voltage, when the voltage signal receiving is greater than the threshold voltage of setting, to SEL, removes driving circuit and sends the control signal of turn-offing electronic switching device;
SEL removes driving circuit, receives the control signal of subregion CPU or hysteresis comparator output, drives disconnection or the closure of electronic switching device;
Electronic switching device, is connected between power supply zone and its load, turn-offs or the power supply of connection power supply zone to load.
The threshold voltage of described hysteresis comparator is to set according to the corresponding voltage swing of rated operational current size of power supply zone.
When power supply zone output services electric current is greater than breech lock current threshold, the voltage signal that SEL state signal collecting circuit collects after SEL status signal treatment circuit amplifies with the threshold voltage comparison of hysteresis comparator, hysteresis comparator is exported high level according to comparative result, the control signal of exporting control SEL and remove driving circuit and disconnect electronic switching device, power supply zone is disconnected to the power supply of load;
In this simultaneously, voltage signal after the amplification that subregion CPU sends SEL status signal treatment circuit receives as SEL telesignalisation, subregion CPU is after receiving breech lock telesignalisation, judgement single event latch-up signal produces, and the control signal that also sends shutoff electronic switching device is removed driving circuit to SEL.
Describedly in 1 time of interval T, restart after electronic switching device recovers the power supply of load, if single event latch-up is not removed yet, hysteresis comparator still sends the control signal of high level, subregion CPU produces single event latch-up signal according to sentencing, and hysteresis comparator or subregion CPU send the signal that again turn-offs electronic switching device; Subregion CPU starts timer again, and set time T2 backward SEL in interval removes driving circuit and transmits control signal, and T2>T1, reopens electronic switching device, again recovers the power supply to load.
Described subregion CPU also records the number of times that produces single event latch-up signal, if the operation of electronic switching device is opened/turn-offed to continuous several times, all fails normally to recover the power supply of load, and subregion CPU sends the signal that this power supply area is short-circuited.
Compared with prior art, the present invention has following useful technique effect:
The autonomous Real-Time Monitoring of embedded space computer single event latch-up provided by the invention and decontrol; realized the Real-Time Monitoring of space computer single event latch-up and control; when there is single event latch-up in space computer in space; can locate fast latched areas by subregion CPU; by controlling SEL, remove driving circuit and electronic switching device; disconnect this latched areas power supply, protection device and track, not because breech lock is damaged, can recover the normal power supply in this region simultaneously.In recovering the process of normal work, only make the partial function of space computer temporarily can not use, can not have influence on other modules of space computer, for spacecraft system, its impact is down to minimum.
The autonomous Real-Time Monitoring of embedded space computer single event latch-up provided by the invention and decontrol, when subregion CPU judgement sends short circuit, by subregion CPU, SEL, remove the control of driving circuit to electronic switching device, make it remain off-position, avoid the impact on other regions of the power supply area that is short-circuited, avoided turn-offing the electric power system of unit.And in prior art after judgement is short-circuited, the operation of existing employing is the electric power system of turn-offing unit; Make by unit power-off, to change single power supply zone power-off into during single event latch-up is removed, the negative effect bringing is down to minimum to system, avoid bringing infringement to product.
The autonomous Real-Time Monitoring of embedded space computer single event latch-up provided by the invention and decontrol, can also, after spacecraft transmitting, can send telecommand by ground subregion CPU is carried out to Long-distance Control to power supply zone.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention.
Wherein, 1, power supply zone; 2, SEL state signal collecting circuit; 3, SEL status signal treatment circuit; 4, SEL telesignalisation receiver module; 5, subregion CPU; 6, hysteresis comparator; 7, SEL removes driving circuit; 8, electronic switching device; 9, load.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in further detail, and the explanation of the invention is not limited.
Referring to Fig. 1, the autonomous Real-Time Monitoring of embedded space computer single event latch-up and decontrol, comprising:
SEL state signal collecting circuit 2, monitors the size of current of coupled power supply zone 1, and monitored current signal is converted into voltage signal, also voltage signal is sent to SEL status signal treatment circuit 3;
SEL status signal treatment circuit 3, amplifies processing by the voltage signal receiving, and the voltage signal amplifying after processing is sent to respectively to SEL telesignalisation receiver module 4 and hysteresis comparator 6;
Subregion CPU5, SEL telesignalisation receiver module 4 sends to subregion CPU5 using the signal receiving as SEL telesignalisation, subregion CPU Real-Time Monitoring single event latch-up signal is removed driving circuit 7 to SEL and is sent the control signal of turn-offing electronic switching device 8 when producing single event latch-up signal; After sending the control signal of turn-offing electronic switching device 8, subregion CPU5 starts timer, and set time T1 backward SEL in interval removes driving circuit 7 and transmits control signal, and reopens electronic switching device 8, recovers the power supply to load 9;
Hysteresis comparator 6, compares the voltage signal receiving and threshold voltage, when the voltage signal receiving is greater than the threshold voltage of setting, to SEL, removes driving circuit 7 and sends the control signal of turn-offing electronic switching device 8;
SEL removes driving circuit 7, receives the control signal of subregion CPU5 or hysteresis comparator 6 outputs, drives disconnection or the closure of electronic switching device 8;
Electronic switching device 8, is connected between power supply zone 1 and its load 9, turn-offs or connect the power supply of 1 pair of load 9 of power supply zone.
When power supply zone output services electric current is greater than breech lock current threshold, the voltage signal that SEL state signal collecting circuit collects after SEL status signal treatment circuit amplifies with the threshold voltage comparison of hysteresis comparator, hysteresis comparator is exported high level according to comparative result, the control signal of exporting control SEL and remove driving circuit and disconnect electronic switching device, power supply zone is disconnected to the power supply of load;
In this simultaneously, voltage signal after the amplification that subregion CPU sends SEL status signal treatment circuit receives as SEL telesignalisation, subregion CPU is after receiving breech lock telesignalisation, judgement single event latch-up signal produces, and the control signal that also sends shutoff electronic switching device is removed driving circuit to SEL.
In 1 time of interval T, restart after electronic switching device recovers the power supply of load, if single event latch-up is not removed yet, hysteresis comparator still sends the control signal of high level, subregion CPU produces single event latch-up signal according to sentencing, and hysteresis comparator or subregion CPU send the signal that again turn-offs electronic switching device; Subregion CPU starts timer again, and set time T2 backward SEL in interval removes driving circuit and transmits control signal, and T2>T1, reopens electronic switching device, again recovers the power supply to load.
Subregion CPU also records the number of times that produces single event latch-up signal, if the operation of electronic switching device is opened/turn-offed to continuous several times, all fails normally to recover the power supply of load, and subregion CPU sends the signal that this power supply area is short-circuited.
The threshold voltage of described hysteresis comparator is to set according to the corresponding voltage swing of rated operational current size of power supply zone.Such as, power supply zone running current is 200mA, it is 400mA that breech lock threshold current is set.When this power supply zone electric current is greater than 400mA, the autonomous Real-Time Monitoring of single event latch-up and decontrol monitor over-current signal, have turn-offed this switched-mode power supply.After elapsed time T1, power up again to this power supply zone.
The concrete course of work is as follows:
After power supply zone 1 powers on, SEL state signal collecting circuit 2 starts to monitor the size of current of this power supply zone 1.SEL state signal collecting circuit 2 is converted into current signal to be connected to SEL status signal treatment circuit 3 after voltage signal and to amplify processing.The signal of finishing dealing with sends to respectively SEL telesignalisation receiver module 4, and the positive input terminal of hysteresis comparator 6.Hysteresis comparator 6, according to power supply zone 1 rated operational current size, is provided with the threshold voltage corresponding to single event latch-up threshold current size.When power supply zone 1 output services electric current is greater than breech lock current threshold, the voltage signal that SEL state signal collecting circuit 2 collects after SEL status signal treatment circuit 3 amplifies with the threshold voltage comparison of hysteresis comparator 6, make hysteresis comparator 6 output high level, control SEL and remove driving circuit 7 disconnection electronic switching devices 8, power supply zone 1 power supply to load 9 is disconnected.In this simultaneously, the voltage signal of SEL status signal treatment circuit 3 after amplifying sends to subregion CPU5 as SEL telesignalisation, subregion CPU5 is after receiving that breech lock telesignalisation judgement single event latch-up signal produces, and the control signal that also sends shutoff electronic switching device 8 is removed driving circuit 7 to SEL.After turn-offing electronic switching device 8, CPU5 starts timer, and interval set time T1, by sending instruction, reopens former latched areas power supply.
If single event latch-up is not removed yet, subregion CPU will collect SEL telesignalisation for the second time, and after again turn-offing electronic switching device 8, interval set time T2 (T2>T1), opens power switch again.If continuous three times (or repeatedly) all fails normally to restore electricity, likely for this power supply area is short-circuited.
When there is single event latch-up in space computer like this in space; can locate fast latched areas by CPU5, by control device, disconnect this latched areas power supply; protection device and track, not because breech lock is damaged, can recover the normal power supply in this region simultaneously.In recovering the process of normal work, only make the partial function of space computer temporarily can not use, can not have influence on other modules of space computer, for spacecraft system, its impact is down to minimum.
After judgement is short-circuited, the operation of existing employing is the electric power system of turn-offing unit; And the present invention removes the control of driving circuit to electronic switching device by subregion CPU, SEL, make it remain off-position, avoided the impact on other regions of the power supply area that is short-circuited, the electric power system of having avoided turn-offing unit.After spacecraft transmitting, can send telecommand by ground, open or turn-off the power supply of power supply zone 1.
The specific embodiment that the present invention lifts is only the annotation to this invention spirit, person skilled in the art of the present invention can to the specific embodiment of describing modify or similarly method substitute, do not depart from spirit of the present invention.
Claims (5)
1. the autonomous Real-Time Monitoring of embedded space computer single event latch-up and a decontrol, is characterized in that, comprising:
SEL state signal collecting circuit, monitors the size of current of coupled power supply zone, and monitored current signal is converted into voltage signal, also voltage signal is sent to SEL status signal treatment circuit;
SEL status signal treatment circuit, amplifies processing by the voltage signal receiving, and the voltage signal amplifying after processing is sent to respectively to SEL telesignalisation receiver module and hysteresis comparator;
Subregion CPU, SEL telesignalisation receiver module sends to subregion CPU using the signal receiving as SEL telesignalisation, subregion CPU Real-Time Monitoring single event latch-up signal is removed driving circuit to SEL and is sent the control signal of turn-offing electronic switching device when producing single event latch-up signal; After sending the control signal of turn-offing electronic switching device, subregion CPU starts timer, and set time T1 backward SEL in interval removes driving circuit and transmits control signal, and reopens electronic switching device, recovers the power supply to load;
Hysteresis comparator, compares the voltage signal receiving and threshold voltage, when the voltage signal receiving is greater than the threshold voltage of setting, to SEL, removes driving circuit and sends the control signal of turn-offing electronic switching device;
SEL removes driving circuit, receives the control signal of subregion CPU or hysteresis comparator output, drives disconnection or the closure of electronic switching device;
Electronic switching device, is connected between power supply zone and its load, turn-offs or the power supply of connection power supply zone to load.
2. the autonomous Real-Time Monitoring of embedded space computer single event latch-up as claimed in claim 1 and decontrol, it is characterized in that, the threshold voltage of described hysteresis comparator is to set according to the corresponding voltage swing of rated operational current size of power supply zone.
3. the autonomous Real-Time Monitoring of embedded space computer single event latch-up as claimed in claim 1 and decontrol, it is characterized in that, when power supply zone output services electric current is greater than breech lock current threshold, the voltage signal that SEL state signal collecting circuit collects after SEL status signal treatment circuit amplifies with the threshold voltage comparison of hysteresis comparator, hysteresis comparator is exported high level according to comparative result, the control signal of exporting control SEL and remove driving circuit and disconnect electronic switching device, power supply zone is disconnected to the power supply of load;
In this simultaneously, voltage signal after the amplification that subregion CPU sends SEL status signal treatment circuit receives as SEL telesignalisation, subregion CPU is after receiving breech lock telesignalisation, judgement single event latch-up signal produces, and the control signal that also sends shutoff electronic switching device is removed driving circuit to SEL.
4. the autonomous Real-Time Monitoring of embedded space computer single event latch-up as claimed in claim 3 and decontrol, it is characterized in that, in 1 time of interval T, restart after electronic switching device recovers the power supply of load, if single event latch-up is not removed yet, hysteresis comparator still sends the control signal of high level, subregion CPU produces single event latch-up signal according to sentencing, and hysteresis comparator or subregion CPU send the signal that again turn-offs electronic switching device; Subregion CPU starts timer again, and set time T2 backward SEL in interval removes driving circuit and transmits control signal, and T2>T1, reopens electronic switching device, again recovers the power supply to load.
5. the autonomous Real-Time Monitoring of embedded space computer single event latch-up and the decontrol as described in claim 1 or 4; it is characterized in that; subregion CPU also records the number of times that produces single event latch-up signal; if continuous several times is opened/turn-offed the operation of electronic switching device and all fails normally to recover the power supply of load, subregion CPU sends the signal that this power supply area is short-circuited.
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| CN201410206383.8A CN103984401B (en) | 2014-05-15 | 2014-05-15 | A kind of embedded space computer single event latch-up is monitored the most in real time and releases device |
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| CN201410206383.8A CN103984401B (en) | 2014-05-15 | 2014-05-15 | A kind of embedded space computer single event latch-up is monitored the most in real time and releases device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134758A (en) * | 2017-05-08 | 2017-09-05 | 哈尔滨工业大学 | Cmos device single event latch-up effect protector under a kind of space environment |
| CN110492431A (en) * | 2019-08-29 | 2019-11-22 | 中国科学院近代物理研究所 | The single event latch-up protective device and clear-latch method of charge measurement chip |
| CN111679937A (en) * | 2020-06-01 | 2020-09-18 | 西安微电子技术研究所 | Single event lock release method based on local potential collapse |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672918A (en) * | 1994-08-18 | 1997-09-30 | The United States Of America As Represented By The United States Department Of Energy | System level latchup mitigation for single event and transient radiation effects on electronics |
| US6064555A (en) * | 1997-02-25 | 2000-05-16 | Czajkowski; David | Radiation induced single event latchup protection and recovery of integrated circuits |
| CN1760676A (en) * | 2004-10-14 | 2006-04-19 | 中国科学院空间科学与应用研究中心 | A kind of detector and method that detects capability of microprocessor for anti event of single particle |
| CN101196837A (en) * | 2007-12-26 | 2008-06-11 | 北京时代民芯科技有限公司 | Device for detecting 80C31 single particle effect |
| CN101471562A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Protective circuit for locking single particle |
-
2014
- 2014-05-15 CN CN201410206383.8A patent/CN103984401B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672918A (en) * | 1994-08-18 | 1997-09-30 | The United States Of America As Represented By The United States Department Of Energy | System level latchup mitigation for single event and transient radiation effects on electronics |
| US6064555A (en) * | 1997-02-25 | 2000-05-16 | Czajkowski; David | Radiation induced single event latchup protection and recovery of integrated circuits |
| CN1760676A (en) * | 2004-10-14 | 2006-04-19 | 中国科学院空间科学与应用研究中心 | A kind of detector and method that detects capability of microprocessor for anti event of single particle |
| CN101196837A (en) * | 2007-12-26 | 2008-06-11 | 北京时代民芯科技有限公司 | Device for detecting 80C31 single particle effect |
| CN101471562A (en) * | 2007-12-28 | 2009-07-01 | 中国航天科技集团公司第五研究院第五一〇研究所 | Protective circuit for locking single particle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107134758A (en) * | 2017-05-08 | 2017-09-05 | 哈尔滨工业大学 | Cmos device single event latch-up effect protector under a kind of space environment |
| CN107134758B (en) * | 2017-05-08 | 2019-02-22 | 哈尔滨工业大学 | Cmos device single event latch-up effect protective device under a kind of space environment |
| CN110492431A (en) * | 2019-08-29 | 2019-11-22 | 中国科学院近代物理研究所 | The single event latch-up protective device and clear-latch method of charge measurement chip |
| CN111679937A (en) * | 2020-06-01 | 2020-09-18 | 西安微电子技术研究所 | Single event lock release method based on local potential collapse |
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