CN109633291B - Bias current main backup switching circuit in space electric field detection system - Google Patents
Bias current main backup switching circuit in space electric field detection system Download PDFInfo
- Publication number
- CN109633291B CN109633291B CN201811565351.1A CN201811565351A CN109633291B CN 109633291 B CN109633291 B CN 109633291B CN 201811565351 A CN201811565351 A CN 201811565351A CN 109633291 B CN109633291 B CN 109633291B
- Authority
- CN
- China
- Prior art keywords
- resistor
- charge
- current
- discharge
- power supply
- 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
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/12—Measuring electrostatic fields or voltage-potential
Abstract
The invention provides a bias current main and backup switching circuit in a space electric field detection system, which is simple and effective in targeted design by establishing a main power supply and a backup power supply of a secondary power supply in equipment. A bias current main backup switching circuit in a space electric field detection system comprises a primary bleeder resistor A (1), a charge-discharge capacitor A (2), a charge-discharge resistor A (3), a current-limiting resistor A (4), an NPN type bipolar triode A (5), a current-limiting resistor B (6), an attraction coil A (7), a primary bleeder resistor B (15), a charge-discharge capacitor B (16), a charge-discharge resistor B (17), a current-limiting resistor C (18), an NPN type bipolar triode B (19), a current-limiting resistor D (20), an attraction coil B (21), a magnetic latching relay (8) and a sensor (9).
Description
Technical Field
The invention belongs to the technical field of space environment detection, and particularly relates to a circuit design for switching bias current signals suitable for space electric field detection along with the power-on state of a secondary power supply of a main system and a backup system.
Background
The main and backup redundancy of the electronic device is a common engineering means for improving reliability on a satellite platform, and can be classified into a hot standby mode or a cold standby mode according to whether the main and backup are powered on simultaneously. The hot standby mode is to supply power to the primary system (or module, device) and the backup system (or module, device) simultaneously to make them work. This approach gains reliability through more energy consumption and life consumption of redundant components. Obviously, on satellite systems where resources are at a premium, some non-critical devices are not desirable. Most noncritical devices with backup redundancy requirements adopt a cold backup mode, namely when a primary part is electrified and works, a backup part is not electrified and works, and vice versa.
The space electric field detection system is composed of a sensor and an electronic box, the extra-satellite sensor is not usually backed up, and partial components of the intra-satellite electronic box need to adopt a cold standby mode. The cold standby usually uses the instruction line of the satellite platform to electrify the relay coil in the device to realize the power supply switching of the main and the backup. Under some special reasons, when bias current signals generated by the main and backup components of the electronic box need to be supplied to the sensor, the relay cannot be operated by using a command line given by the satellite platform.
Disclosure of Invention
The invention provides a bias current main and backup switching circuit in a space electric field detection system, which is simple and effective in targeted design by establishing a main power supply and a backup power supply of a secondary power supply in equipment.
In order to solve the technical problem, the invention is realized as follows:
a bias current main backup switching circuit in a space electric field detection system comprises a primary bleeder resistor A (1), a charge-discharge capacitor A (2), a charge-discharge resistor A (3), a current-limiting resistor A (4), an NPN type bipolar triode A (5), a current-limiting resistor B (6), an attraction coil A (7), a primary bleeder resistor B (15), a charge-discharge capacitor B (16), a charge-discharge resistor B (17), a current-limiting resistor C (18), an NPN type bipolar triode B (19), a current-limiting resistor D (20), an attraction coil B (21), a magnetic latching relay (8) and a sensor (9); one end of the charge-discharge capacitor A (2) is connected to the ground in series through the primary bleeder resistor A (1), the other end of the charge-discharge capacitor A (2) is connected to the ground in series through the charge-discharge resistor A (3), the current-limiting resistor A (4) is connected between the charge-discharge resistor A (3) and the NPN-type bipolar triode A (5) in series, a collector of the NPN-type bipolar triode A (5) is connected to an instruction return wire end of an attraction coil A (7) in the magnetic latching relay (8), a source electrode of the attraction coil A (7) is connected to the ground, and an instruction end of the attraction coil A (7) is connected to a short-circuit end of the primary bleeder resistor A (1) and the charge-discharge capacitor A (2) through the current-limiting resistor B (6; one end of the charge-discharge capacitor B (16) is connected to the ground in series through the primary bleeder resistor B (15), the other end of the charge-discharge capacitor B (16) is connected to the ground in series through the charge-discharge resistor B (17), the current-limiting resistor C (18) is connected between the charge-discharge resistor B (17) and the NPN type bipolar triode B (19) in series, a collector of the NPN type bipolar triode B (19) is connected to an instruction return wire end of an attraction coil B (21) in the magnetic latching relay (8), a source of the attraction coil B (21) is connected to the ground, and an instruction end of the attraction coil B (21) is connected to a short-connection end of the primary bleeder resistor B (15) and the charge-discharge capacitor B (16) through the current-limiting resistor D (20) and.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention can get rid of the constraint that a relay coil depends on a satellite platform instruction line and is realized only by depending on the power-on process of a secondary power supply in equipment. For example, when the driving capability of the command line provided by the satellite platform is insufficient and cannot reliably drive a plurality of relay coils, the design method can be used for simulating the command by the strong driving capability of the secondary power supply in the equipment to solve the problem.
(2) The invention can improve the reliability of the synchronization of the bias current signal and the main and backup of the electronic box. The problem that when two relays uniformly use the command line driving coils of the satellite platform, the relays are not switched to the primary part or the backup part together due to the influence of external interference, so that the secondary power supply is switched to the primary part and the bias current is switched to the backup part is avoided; or the secondary power supply is in a backup state, and the bias current signal is in a disordered state of the main part.
(3) The invention has the advantages of simple realization, strong driving capability, low cost and high reliability.
Drawings
FIG. 1 is a circuit diagram of the secondary power supply voltage controlled switching of the present invention.
In the figure: the device comprises a primary bleeder resistor A, a secondary bleeder capacitor A, a secondary bleeder resistor B, a magnetic latching relay A, a magnetic latching relay 8, a sensor 9, a primary secondary supply voltage 10, a secondary backup supply voltage 11, a primary bias current signal 12, a backup bias current signal 13, and a bias current output 14. 15-primary discharge resistor B, 16-charge and discharge capacitors B, 17-charge and discharge resistor B, 18-current limiting resistor C, 19-NPN bipolar triode B, 20-current limiting resistor D, 21-pull-in coil B.
FIG. 2 is a schematic diagram of the system for switching the bias current signal of the space electric field detection system of the present invention.
In the figure: the system comprises an a-satellite platform provided primary power supply, a b-DC-DC secondary power supply module, a c-secondary power supply main backup switching relay, a d-electronics box main backup, an e-electronics box backup, an f-bias current signal main backup switching relay, a g-sensor, an h-backup secondary power supply voltage, an i-main backup secondary power supply voltage, a j-main on-off instruction line and a k-standby on-off instruction line. l-backup bias current signal input, m-main bias current signal input
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The design principle of the invention is as follows: converting a primary power supply input by a satellite platform through a DC-DC secondary power supply module to obtain required secondary power supply voltage; meanwhile, a secondary power supply output by the DC-DC is divided into a main secondary power supply and a backup secondary power supply by reasonably arranging contacts of a relay, and the relay is switched by using an instruction line provided by a satellite platform; supplying the primary secondary power supply voltage to the electronic box primary, and supplying the backup secondary power supply voltage to the electronic box backup; in the same way, in a magnetic latching relay for switching the main and standby bias current signals, the voltage of a main secondary power supply is combined with a resistor, a capacitor and a triode to form a switching circuit for attracting a coil, and a standby secondary power supply is used for releasing the coil in the same way; the bias current output of the magnetically held relay is electrically connected to the input of the sensor.
As shown in fig. 2, the system for switching bias current signals of the space electric field detection system of the present invention is composed of a primary power supply voltage a, a DC-DC module b, a magnetic latching relay c, an electronics box master d, an electronics box backup e, a magnetic latching relay f, a sensor g, a master +5V secondary power supply i, a backup +5V secondary power supply h, a main on/off command line j, and a standby on/off command line k.
The implementation steps of the switching process are as follows:
(1) the satellite platform or the simulator sends a main switch-on/switch-off command to j, the width of the command is a 200ms negative pulse command, the high level is 28V, and the low level is 0V;
(2) the DC-DC module b converts the primary power supply into a +5V secondary power supply and sends the secondary power supply to an input contact of a relay c;
(3) c, switching on a main secondary power supply output contact due to the operation (1);
(4) the electronic box master part d starts to be electrified and works, and generates a master part bias current signal to be sent to a master part input contact of the magnetic latching relay f;
(5) due to the establishment process of the primary part +5V secondary power supply i, the relay f acts to connect the input contact and the output contact of the primary part and conduct, and the bias current signal is switched to the primary part to complete the operation.
(6) When the satellite platform or the simulator sends the standby main-off command to k, the operation of switching the bias current signal to the standby is completed according to the similar description above.
As shown in fig. 1, the switching control circuit of the present invention is composed of a primary bleeder resistor a1, a charging/discharging capacitor a2, a charging/discharging resistor A3, a current-limiting resistor a4, an NPN-type bipolar transistor A5, a current-limiting resistor B6, an attraction coil a7, a primary bleeder resistor B15, a charging/discharging capacitor B16, a charging/discharging resistor B17, a current-limiting resistor C18, an NPN-type bipolar transistor B19, a current-limiting resistor D20, an attraction coil B21, a magnetic latching relay 8, a sensor 9, a primary +5V secondary power supply voltage 10, a backup +5V secondary power supply voltage 11, a primary bias current 12, a backup bias current 13, and a bias current output 14.
The handover procedure of fig. 1 is as follows:
(1) when the primary +5V secondary power supply voltage 10, i.e., i in fig. 1, is established due to the switching process in fig. 1, and the charging and discharging capacitor A2 starts to charge, but the voltage across the capacitor cannot change suddenly, according to thevenin's theorem, the voltage drop of the charging and discharging resistor A3 is +5V, and the NPN-type bipolar transistor A5 is in a conducting state.
(2) The current limiting resistor A4 protects the NPN bipolar triode A5 to prevent overcurrent burning;
(3) the time constants of the charge-discharge capacitor A2 and the charge-discharge resistor A3 determine the conduction time of the NPN type bipolar triode A5, and proper parameters are selected according to the conduction time requirement of the relay coil 7 at the beginning of design;
(4) conducting an NPN type bipolar triode A5 to enable a pull-in coil A7 to flow current and an output contact of a pull-in magnetic latching relay 8 to conduct a main part input contact, and finishing outputting a main part bias current (i.e. m in figure 2) to a sensor 9 (i.e. g in figure 2);
(5) the charging and discharging capacitor A2 starts to be charged continuously when being charged, and finally reaches a voltage drop of 5V, the NPN type bipolar triode 5 finishes a dynamic process from conduction to cut-off in the process, the conduction time meets the conduction time requirement of the pull-in coil A7 under the condition of selecting proper resistance-capacitance parameters, and the process simulates a common negative pulse instruction form of a satellite platform;
(6) when the satellite platform sends a standby main-off instruction to an instruction line k in fig. 1, a main secondary power supply contact of the relay 8 in fig. 1 is disconnected, and the charge-discharge capacitor in fig. 1 discharges charges through the primary discharge resistor a1, so that failure caused by the fact that the charge-discharge capacitor A2 cannot be charged in the next main-on/standby operation is avoided;
(7) similarly, when the satellite platform sends the standby-on-main-off command to the command line k in fig. 2, the backup switching process of the bias current is as follows.
(8) When the secondary power voltage 11 of +5V, i.e. h in fig. 2, is backed up due to the switching process in fig. 1, and the charging/discharging capacitor B16 starts to charge, but since the voltage across the capacitor cannot change suddenly, according to thevenin's theorem, the voltage drop of the charging/discharging resistor B17 is +5V, and the NPN-type bipolar transistor B19 is in a conducting state.
(9) The current limiting resistor C18 protects the NPN type bipolar triode B19 to prevent overcurrent burning;
(10) the time constants of the charge-discharge capacitor B16 and the charge-discharge resistor B17 determine the conduction time of the NPN type bipolar triode B19, and the parameter selection is the same as 2 and 3;
(11) the NPN-type bipolar transistor B19 is turned on, so that the pull-in coil B21 flows a current, and the output contact of the pull-in relay 8 turns on the backup input contact, completing the backup bias current (i.e. l in fig. 2) output to the sensor 9 (i.e. g in fig. 2).
Claims (1)
1. A bias current main backup switching circuit in a space electric field detection system is characterized by comprising a primary bleeder resistor A (1), a charge-discharge capacitor A (2), a charge-discharge resistor A (3), a current-limiting resistor A (4), an NPN type bipolar triode A (5), a current-limiting resistor B (6), an attraction coil A (7), a primary bleeder resistor B (15), a charge-discharge capacitor B (16), a charge-discharge resistor B (17), a current-limiting resistor C (18), an NPN type bipolar triode B (19), a current-limiting resistor D (20), an attraction coil B (21), a magnetic latching relay (8) and a sensor (9); one end of the charge-discharge capacitor A (2) is connected to the ground in series through the primary bleeder resistor A (1), the other end of the charge-discharge capacitor A (2) is connected to the ground in series through the charge-discharge resistor A (3), the current-limiting resistor A (4) is connected between the charge-discharge resistor A (3) and the NPN-type bipolar triode A (5) in series, a collector of the NPN-type bipolar triode A (5) is connected to an instruction return wire end of an attraction coil A (7) in the magnetic latching relay (8), a source electrode of the attraction coil A (7) is connected to the ground, and an instruction end of the attraction coil A (7) is connected to a short-circuit end of the primary bleeder resistor A (1) and the charge-discharge capacitor A (2) through the current-limiting resistor B (6; one end of the charge-discharge capacitor B (16) is connected to the ground in series through the primary bleeder resistor B (15), the other end of the charge-discharge capacitor B (16) is connected to the ground in series through the charge-discharge resistor B (17), the current-limiting resistor C (18) is connected between the charge-discharge resistor B (17) and the NPN type bipolar triode B (19) in series, a collector of the NPN type bipolar triode B (19) is connected to an instruction return wire end of an attraction coil B (21) in the magnetic latching relay (8), a source of the attraction coil B (21) is connected to the ground, and an instruction end of the attraction coil B (21) is connected to a short-connection end of the primary bleeder resistor B (15) and the charge-discharge capacitor B (16) through the current-limiting resistor D (20) and.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565351.1A CN109633291B (en) | 2018-12-20 | 2018-12-20 | Bias current main backup switching circuit in space electric field detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811565351.1A CN109633291B (en) | 2018-12-20 | 2018-12-20 | Bias current main backup switching circuit in space electric field detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109633291A CN109633291A (en) | 2019-04-16 |
| CN109633291B true CN109633291B (en) | 2020-11-27 |
Family
ID=66076094
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811565351.1A Active CN109633291B (en) | 2018-12-20 | 2018-12-20 | Bias current main backup switching circuit in space electric field detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109633291B (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05227643A (en) * | 1992-02-13 | 1993-09-03 | Mitsubishi Electric Corp | Digital output circuit |
| CN1627593A (en) * | 2003-12-11 | 2005-06-15 | 上海贝尔阿尔卡特股份有限公司 | Switching circuit for low voltage power supply in master-slave power supply mode |
| CN1790232A (en) * | 2004-12-15 | 2006-06-21 | 乐金电子（昆山）电脑有限公司 | Power supply switching circuit for personal portable terminal |
| CN201838298U (en) * | 2010-09-07 | 2011-05-18 | 深圳市洲明科技股份有限公司 | Two-backup circuit and two-backup system of LED display screen power supply |
| CN103595122A (en) * | 2013-11-29 | 2014-02-19 | 天津铁路信号有限责任公司 | Hot standby switching reliability improving circuit for 25Hz power supply |
| CN106134498B (en) * | 2011-07-21 | 2014-02-19 | 北京卫星制造厂 | A kind of satellite load line under-voltage protection control circuit |
| CN203759085U (en) * | 2013-10-11 | 2014-08-06 | 上海富欣智能交通控制有限公司 | Self-adaptation load matching current collecting switch circuit |
| CN104298578A (en) * | 2014-10-31 | 2015-01-21 | 上海原动力通信科技有限公司 | Testing device, system and method for double-way power supply of board card |
| CN204131213U (en) * | 2014-08-01 | 2015-01-28 | 科立讯通信股份有限公司 | A kind of circuit realizing communication equipment main power supply and take over seamlessly |
| CN105262201A (en) * | 2014-07-18 | 2016-01-20 | 中国长城计算机深圳股份有限公司 | Cold backup switching method and circuit for redundant power supply, and redundant power supply |
| CN106200525A (en) * | 2016-07-26 | 2016-12-07 | 傲视恒安科技（北京）有限公司 | A kind of changeable centrally connected power supply supply unit being applied to photographic head |
| CN106300642A (en) * | 2016-08-31 | 2017-01-04 | 合肥赛为智能有限公司 | A kind of dual power supply redundancy cold standby circuit with power supply status output |
| CN107516936A (en) * | 2017-09-08 | 2017-12-26 | 天津汇康医用设备有限公司 | A kind of direct current main secondary power switching circuit |
| CN208015445U (en) * | 2018-02-09 | 2018-10-26 | 蚌埠依爱消防电子有限责任公司 | A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit |
-
2018
- 2018-12-20 CN CN201811565351.1A patent/CN109633291B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05227643A (en) * | 1992-02-13 | 1993-09-03 | Mitsubishi Electric Corp | Digital output circuit |
| CN1627593A (en) * | 2003-12-11 | 2005-06-15 | 上海贝尔阿尔卡特股份有限公司 | Switching circuit for low voltage power supply in master-slave power supply mode |
| CN1790232A (en) * | 2004-12-15 | 2006-06-21 | 乐金电子（昆山）电脑有限公司 | Power supply switching circuit for personal portable terminal |
| CN201838298U (en) * | 2010-09-07 | 2011-05-18 | 深圳市洲明科技股份有限公司 | Two-backup circuit and two-backup system of LED display screen power supply |
| CN106134498B (en) * | 2011-07-21 | 2014-02-19 | 北京卫星制造厂 | A kind of satellite load line under-voltage protection control circuit |
| CN203759085U (en) * | 2013-10-11 | 2014-08-06 | 上海富欣智能交通控制有限公司 | Self-adaptation load matching current collecting switch circuit |
| CN103595122A (en) * | 2013-11-29 | 2014-02-19 | 天津铁路信号有限责任公司 | Hot standby switching reliability improving circuit for 25Hz power supply |
| CN105262201A (en) * | 2014-07-18 | 2016-01-20 | 中国长城计算机深圳股份有限公司 | Cold backup switching method and circuit for redundant power supply, and redundant power supply |
| CN204131213U (en) * | 2014-08-01 | 2015-01-28 | 科立讯通信股份有限公司 | A kind of circuit realizing communication equipment main power supply and take over seamlessly |
| CN104298578A (en) * | 2014-10-31 | 2015-01-21 | 上海原动力通信科技有限公司 | Testing device, system and method for double-way power supply of board card |
| CN106200525A (en) * | 2016-07-26 | 2016-12-07 | 傲视恒安科技（北京）有限公司 | A kind of changeable centrally connected power supply supply unit being applied to photographic head |
| CN106300642A (en) * | 2016-08-31 | 2017-01-04 | 合肥赛为智能有限公司 | A kind of dual power supply redundancy cold standby circuit with power supply status output |
| CN107516936A (en) * | 2017-09-08 | 2017-12-26 | 天津汇康医用设备有限公司 | A kind of direct current main secondary power switching circuit |
| CN208015445U (en) * | 2018-02-09 | 2018-10-26 | 蚌埠依爱消防电子有限责任公司 | A kind of active and standby electric automatic switchover of fire alarm control unit, detection and protection circuit |
Non-Patent Citations (1)
| Title |
|---|
| 一种简单实用的备用电源切换电路;陈晓芳;《电脑知识与技术》;20040927;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109633291A (en) | 2019-04-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203799201U (en) | Power supply control device | |
| US2725488A (en) | Series-parallel switch and battery circuit | |
| CN107528382B (en) | Power supply self-locking method for fly-by-wire flight control system | |
| CN108566103B (en) | One-key switch device for secondary radar and implementation method thereof | |
| CN109017315B (en) | Power supply self-protection system and method for hybrid power vehicle | |
| CN109910650B (en) | Contact charging device and unmanned aerial vehicle | |
| JP2010273440A (en) | Charging circuit of series connection battery group | |
| CN106549487A (en) | A kind of master backup power failure monitor and automatic switching control circuit | |
| CN109624714B (en) | Power supply system of electric automobile | |
| KR20120112072A (en) | Auxiliary battery charging apparatus | |
| CN106406076A (en) | Redundant time sequence control system for launcher | |
| CN109633291B (en) | Bias current main backup switching circuit in space electric field detection system | |
| CN106100024A (en) | A kind of rush-harvesting and rush-planting DC charging motor switching at runtime protection circuit | |
| US10170258B2 (en) | Method for controlling a change of operating state of an electromechanical component and corresponding device | |
| CN112821766B (en) | Driving method and driving device thereof | |
| KR20130080943A (en) | Discharging circuit of input unit for large capacity inverter | |
| CN106773843A (en) | A kind of carrier rocket heat examination vehicle control | |
| US9438038B1 (en) | Power supply fast turn-on and increased hold-up time within an electrical device | |
| CN212992014U (en) | Power isolation device, power supply system and electric equipment | |
| CN104714581B (en) | Based on the star loaded camera power supply system of transformer | |
| CN109470960B (en) | Aircraft central authorities block terminal functional test device | |
| CN104682688A (en) | Method for improving power supply stability during starting up and power circuit | |
| CN220672470U (en) | Relay contact protection circuit | |
| CN103632803B (en) | A kind of electromagnetic coil driving circuit | |
| CN104241714B (en) | Can quickly low-voltage charging battery |
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 |