CN103036284A - Aviation onboard recorder independent power supply - Google Patents
Aviation onboard recorder independent power supply Download PDFInfo
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- CN103036284A CN103036284A CN2012105212820A CN201210521282A CN103036284A CN 103036284 A CN103036284 A CN 103036284A CN 2012105212820 A CN2012105212820 A CN 2012105212820A CN 201210521282 A CN201210521282 A CN 201210521282A CN 103036284 A CN103036284 A CN 103036284A
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Abstract
The invention belongs to avionics technology, is applied to the technical field of avionics, and particularly relates to an aviation onboard recorder independent power supply. The aviation onboard recorder independent power supply comprises a charging circuit 1, a control unit 2, an energy storage unit 3, a power supply voting unit 4 and a boosted circuit 5. As a super-capacitor is adopted as the energy storage unit, compared with a charging battery, the aviation onboard recorder independent power supply has the advantages that the cycle life is more than 100 times that of the charging battery, maintenance-free of the energy storage unit of the recorder independent power supply in a full life circle is achieved, large-current charging and discharging can be borne, self-heating quantity is small, energy storage efficiency can be improved conveniently, and the heat dissipation design can be simplified conveniently. The aviation onboard recorder independent power supply is designed according to requirements of the TSO-C155 airworthiness standard, adopts the super-capacitor for energy storage, and is capable of providing a 12 W back up power supply which can last 10 minutes for a recorder after being charged for 15 minutes when a main power supply of an aircraft is cut off.
Description
Technical field
The invention belongs to the avionics class, be applied to the avionics field, particularly a kind of airborne register independent current source.
Background technology
The register independent current source is used for when the Aircraft Main power interruptions, 10 minutes back-up sources is provided for the protection register, with the flying quality of recorded key.
At present, domestic development to the register independent current source is just at the early-stage, and the relevant criterion CTSO-C155 of CAAC promulgates soon.External register independent current source has had goods shelf products, and its energy-storage units generally adopts rechargeable battery, such as nickel-cadmium cell, lead accumulator etc.But rechargeable battery has the shortcomings such as cycle life lower (being not more than 1000 times), easily contaminated environment, temperature range be narrower.For demands such as non-maintaining (the few maintenance) that on the Domestic Aircraft register independent current source proposed, wide temperature (55 ℃～70 ℃) work, external register independent current source can't satisfy.
Summary of the invention
Goal of the invention: according to TSO-C155, CTSO-C155, ARINC777 standard design register independent current source, adopt the ultracapacitor of cycle life longer (greater than 100000 times), operating temperature range wide (55 ℃～70 ℃), environmental protection as energy-storage units, improve working life and the temperature environment adaptability of register independent current source, reduce maintenance times.
Technical scheme: a kind of airborne register independent current source, comprise charging circuit 1, control unit 2, energy-storage units 3, power supply voting unit 4 and booster circuit 5, the input VIN1 of described charging circuit 1 is linked into input power 6, output VO1 receives energy-storage units 3, the first input end VIN3 of power supply voting unit 4 receives input power 6, the second input VIN4 is connected to energy-storage units 3, the input VIN5 of booster circuit 5 is connected to the output VO2 of power supply voting unit 4, and the output VO3 of booster circuit 5 is connected to out-put supply 7; The input VIN2 of described control unit 2 is connected to input power 6, two control signal outputs CTR1 and CTR2 is connected respectively to the control signal input SHD1 of power supply voting unit 4 and the control signal input SHD2 of booster circuit 5.
Described charging circuit 1 is constant current-constant voltage-permanent power charging circuit, structure is BUCK type Switching Power Supply, be used for to energy-storage units 3 chargings, this charging circuit is in set point when following at energy-storage units 3 voltages, adopt the constant current charge mode to charge, after voltage reaches certain value, adopt permanent power charging, employing constant voltage charge after being full of;
Described control unit 2 detects input voltage, when input power 6 voltages were lower than set point after 10 minutes, by output CTR1 and/or CTR2 output cut-off signals, the respectively output of powered-down voting unit 4 and/or booster circuit 5;
Described energy-storage units 3 is by 31 series connection of several single super capacitor unit, or in parallel, or the combining of series and parallel connections, and is used for the store electricity energy, and each super capacitor unit 31 forms by super capacitor C1 parallel connection protection circuit 32;
Described power supply voting unit 4 is used for automatically selecting input VIN3 and the higher voltage of VIN4 to export from VO2, can turn-off electric channel between input VIN4 and the output VO2 by the control signal of control signal input SHD1 input;
Described booster circuit 5 is made of BOOST type Switching Power Supply, boost in voltage for the output VO2 output of power supply being decided by vote unit 4 is exported by output VO3 behind setting voltage, can be closed the output of booster circuit 5 and output VO3 thereof by the control signal of control signal input SHD2 input.
Beneficial effect: a kind of airborne register independent current source shown in the present, its beneficial effect is as follows:
1, adopted super capacitor as energy-storage units, the rechargeable battery of comparing, its cycle life can realize that at more than 100 times of rechargeable battery register independent current source Life cycle energy-storage units is non-maintaining;
2, adopted super capacitor as energy-storage units, the rechargeable battery of comparing can bear discharging and recharging of large electric current, and self-heating is few, is convenient to improve stored energy efficient and simplifies heat dissipation design;
3, adopted super capacitor as energy-storage units, the rechargeable battery of comparing can discharge and recharge operation in-50 ℃～70 ℃ temperature ranges, and rechargeable battery discharge temp scope can't reach-50 ℃～70 ℃, and the charging temperature scope is narrower;
4, the charging circuit of supporting design has " constant current-permanent power-constant voltage " charge characteristic, uses " constant current charge, voltage detecting " charging modes of charger more to be fit to ultracapacitor on the more general rechargeable battery;
5, the conventional diode voting circuit in the power supply of supporting design voting unit has lower conduction voltage drop, can effectively reduce line loss, improves the utilance of stored energy;
6, the protective circuit of supporting design can be directly parallel on the super capacitor monomer and use, and is simpler than the cell equalizing protecting circuit of existing flying capacitance and switching power circuit formation, bears easily large current charge.
Description of drawings
Fig. 1 is a kind of airborne register independent current source theory diagram shown in the present;
Fig. 2 is the embodiment of the invention one charging circuit theory diagram;
Fig. 3 is the embodiment of the invention one super capacitor unit schematic diagram;
Fig. 4 is the embodiment of the invention one power supply voting unit schematic diagram.
Embodiment
Below in conjunction with accompanying drawing the present invention is done to describe in further detail, see also Fig. 1 to Fig. 4.
A kind of airborne register independent current source, comprise charging circuit 1, control unit 2, energy-storage units 3, power supply voting unit 4 and booster circuit 5, the input VIN1 of described charging circuit 1 is linked into input power 6, output VO1 receives energy-storage units 3, the first input end VIN3 of power supply voting unit 4 receives input power 6, the second input VIN4 is connected to energy-storage units 3, the input VIN5 of booster circuit 5 is connected to the output VO2 of power supply voting unit 4, and the output VO3 of booster circuit 5 is connected to out-put supply 7; The input VIN2 of described control unit 2 is connected to input power 6, two control signal outputs CTR1 and CTR2 is connected respectively to the control signal input SHD1 of power supply voting unit 4 and the control signal input SHD2 of booster circuit 5.
Described charging circuit 1 is constant current-constant voltage-permanent power charging circuit, structure is BUCK type Switching Power Supply, be used for to energy-storage units 3 chargings, this charging circuit is in set point when following at energy-storage units 3 voltages, adopt the constant current charge mode to charge, after voltage reaches certain value, adopt permanent power charging, employing constant voltage charge after being full of;
Described control unit 2 detects input voltage, when input power 6 voltages were lower than set point after 10 minutes, by output CTR1 and/or CTR2 output cut-off signals, the respectively output of powered-down voting unit 4 and/or booster circuit 5;
Described energy-storage units 3 is by 31 series connection of several single super capacitor unit, or in parallel, or the combining of series and parallel connections, and is used for the store electricity energy, and each super capacitor unit 31 forms by super capacitor C1 parallel connection protection circuit 32;
Described power supply voting unit 4 is used for automatically selecting input VIN3 and the higher voltage of VIN4 to export from VO2, can turn-off electric channel between input VIN4 and the output VO2 by the control signal of control signal input SHD1 input;
Described booster circuit 5 is made of BOOST type Switching Power Supply, boost in voltage for the output VO2 output of power supply being decided by vote unit 4 is exported by output VO3 behind setting voltage, can be closed the output of booster circuit 5 and output VO3 thereof by the control signal of control signal input SHD2 input.
Consult the framework that Fig. 1 determines independent current source, with circuit by charging circuit 1, control unit 2, energy-storage units 3, power supply voting unit 4 and booster circuit 5 totally five parts divide.
Determine the essential characteristic of energy-storage units 3.According to 10 minutes, the discharge requirement of 12W, and electric capacity power discharged and recharged formula:
Annotate: Po is discharge power, and η is the conversion efficiency of booster circuit, and u1 is the highest discharge voltage, and u2 is minimum input voltage under the booster circuit work, and Δ t is discharge time.
Can draw the relation of super capacitor pool-size C and u1, u2 and η.
For u1, consider that charging circuit is BUCK type Switching Power Supply, charging voltage can not be higher than the charging circuit input supply voltage, so u1 should be less than the minimum voltage value of input power 6.Then determine u1 according to super capacitor group monomer voltage, obtain simultaneously the monomer series-connected number of super capacitor.
For booster circuit, adopt BOOST type switching power circuit, select corresponding control chip, make the input voltage minimum value can be as much as possible little, to determine u2.Output voltage should satisfy the requirement of output voltage range among the TSO-C155 simultaneously.Then determine the efficiency eta of booster circuit.
Capacity and structure for energy-storage units 3 obtain u1, u2 and η according to the front, can draw the capacity C of super capacitor group, then select suitable super capacitor monomer to adopt series connection, or in parallel, or the mode of parallel/series consists of the super capacitor group, the capacity C that draws
2Should be greater than C.
For charging circuit 1, according to the ARINC777 requirement, the design of charging circuit need to be satisfied charge power and be not more than " rated output power 12W+ dissipation power 5W ", be full of electricity and the time be not more than 15 minutes (as long as can satisfy output in 10 minutes, also can underfill in 15 minutes), charging current is not more than the maximum current that super capacitor bears.Can discharge and recharge the switched voltage that formula is determined constant current charge and the charging of permanent power according to the electric capacity power of describing in the second step.The unloaded output voltage of determining charging circuit is u1.
Select the suitable BUCK type Switching Power Supply control chip with Voltage Feedback and current feedback function and peripheral components to consist of basic BUCK type Switching Power Supply, wherein, current feedback terminal CSENSE is connected to feedback and selects circuit 15.Select current sense resistor to consist of current/charge-voltage convertor 12, select flash current detecting operational amplifier to be equipped with peripheral circuit and consist of current-voltage conversion circuit 13.Select the power detection chip to be equipped with peripheral circuit, add with two anti-phase comparator and peripheral circuit formation power-current converter circuits 14 thereof of opening (OD) output each other with Louing.Select operational amplifier, resistance and isolating diode to consist of feedback and select circuit 15.
For protective circuit 32; select the circuit that is consisted of by operational amplifier and a reference source of the LT6650 chip of Linear Tech or congenerous; charging current according to the charging circuit design; and the protection voltage of super capacitor monomer; determine the value of R1 and R2; determine value and the rated power of R3, determine rated power and the conducting resistance maximum of V1, further select again concrete components and parts.
For power supply voting unit 4, select the power supply voting control chip LTC4412 of Linear Tech and peripheral circuit thereof to consist of, select the typical connection of two metal-oxide-semiconductors " back-to-back ", use the control end CTRL of chip.
For control unit 2, the Main Function of control unit is the voltage of monitoring input power 6, can adopt comparator or other components and parts to realize the monitoring of voltage.When the voltage that monitors input power 6 was higher than set point, control unit 2 enabled power supply voting unit 4 and booster circuit 5, makes its normal operation, and the zero clearing internal timer; When the voltage that monitors input power 6 was lower than set point, internal timer began timing, after full 10 minutes, forbade power supply voting unit 4 and booster circuit 5, stopped its work, deenergization output.
Timer and control signal can be made of digital gate circuit, also can be by CPLD, and perhaps microcontroller (MCU) is realized.
For the power consumption of components and parts on the primary current path of analyzing charging circuit 1, booster circuit 5 and protective circuit 32, then take as required cooling measure.
The present invention has adopted super capacitor as energy-storage units, the rechargeable battery of comparing, and its cycle life can realize that at more than 100 times of rechargeable battery register independent current source Life cycle energy-storage units is non-maintaining; Adopted super capacitor as energy-storage units, the rechargeable battery of comparing can bear discharging and recharging of large electric current, and self-heating is few, is convenient to improve stored energy efficient and simplifies heat dissipation design; Adopted super capacitor as energy-storage units, the rechargeable battery of comparing can discharge and recharge operation in-50 ℃～70 ℃ temperature ranges, and rechargeable battery discharge temp scope can't reach-50 ℃～70 ℃, and the charging temperature scope is narrower; Charging circuit has " constant current-permanent power-constant voltage " charge characteristic, uses " constant current charge, voltage detecting " charging modes of charger more to be fit to ultracapacitor on the more general rechargeable battery; The conventional diode voting circuit in power supply voting unit has lower conduction voltage drop, can effectively reduce line loss, improves the utilance of stored energy; Protective circuit can be directly parallel on the super capacitor monomer and use, and is simpler than the cell equalizing protecting circuit of existing flying capacitance and switching power circuit formation, bears easily large current charge.
Claims (7)
1. airborne register independent current source, it is characterized in that, comprise charging circuit [1], control unit [2], energy-storage units [3], power supply voting unit [4] and booster circuit [5], the input VIN1 of described charging circuit [1] is linked into input power [6], output VO1 receives energy-storage units [3], the first input end VIN3 of power supply voting unit [4] receives input power [6], the second input VIN4 is connected to energy-storage units [3], the input VIN5 of booster circuit [5] is connected to the output VO2 of power supply voting unit [4], and the output VO3 of booster circuit [5] is connected to out-put supply [7]; The input VIN2 of described control unit [2] is connected to input power [6], and two control signal output CTR1 and CTR2 are connected respectively to the control signal input SHD1 of power supply voting unit [4] and the control signal input SHD2 of booster circuit [5];
Described charging circuit [1] is constant current-constant voltage-permanent power charging circuit, and structure is BUCK type Switching Power Supply, is used for charging to energy-storage units [3];
Described control unit [2] detects input voltage, after input power [6] voltage is lower than the set point certain hour, by output CTR1 and/or CTR2 output cut-off signals, the respectively output of powered-down voting unit [4] and/or booster circuit [5];
Described energy-storage units [3] is by the series connection of several single super capacitor unit [31], or in parallel, or the combining of series and parallel connections, and is used for the store electricity energy, and each super capacitor unit [31] forms by super capacitor C1 parallel connection protection circuit [32];
Described power supply voting unit [4] is used for automatically selecting input VIN3 and the higher voltage of VIN4 to export from VO2, can turn-off electric channel between input VIN4 and the output VO2 by the control signal of control signal input SHD1 input;
Described booster circuit [5] is made of BOOST type Switching Power Supply, boost in voltage for the output VO2 output of power supply being decided by vote unit [4] is exported by output VO3 behind setting voltage, can be closed the output of booster circuit [5] and output VO3 thereof by the control signal of control signal input SHD2 input.
2. a kind of airborne register independent current source according to claim 1, it is characterized in that described charging circuit [1] comprises switching power circuit [11], voltage-current converter circuit [12], electric current-voltage conversion circuit [13], power-current change-over circuit [14], feedback selection circuit [15].The power input VIN of described switching power circuit [11] is connected to input power [6], voltage output end VO is connected to the current input terminal CIN of current-voltage conversion circuit [13], the current output terminal CO of current-voltage conversion circuit [13] is connected to energy-storage units [3] by output VO1, the voltage output end CVO of current-voltage conversion circuit [13] is connected respectively to the input CSIN1 of current/charge-voltage convertor [12] and the current input terminal CSIN2 of power-current change-over circuit [14], the Voltage Feedback input VSENSE of the voltage input end VSIN of power-current converter circuit [14] and switching power circuit [11] all is connected to energy-storage units [3] by output VO1, feedback is selected two input CIN1 of circuit [15] to be connected with CIN2 to be connected the output PCO of current converter circuit [14] with power with the output CCO of voltage-current converter circuit [12] to be connected, wherein CIN1 also is connected with the output CTRL of power-current converter circuit [14], and an output CSOUT is connected with the current feedback input CSENSE of switching power circuit [11].
3. a kind of airborne register independent current source according to claim 2 is characterized in that, described switching power circuit [11] is BUCK type Switching Power Supply.
4. a kind of airborne register independent current source according to claim 2 is characterized in that, described power-sensing circuit can be converted to power linear corresponding in the load electric current output.
5. a kind of airborne register independent current source according to claim 1, it is characterized in that, described protective circuit [32] comprises an operational amplification circuit with reference voltage source [33], PMOS pipe V1, power resistor R3 and divider resistance R1, R2, and the OUT pin of described operational amplification circuit is connected on the grid G of PMOS pipe; The FB pin of described operational amplification circuit is connected on the end of divider resistance R1 and R2, the positive V+ of another termination power of R1, another termination power-V-of R2; The IN pin of described operational amplification circuit meets the positive V+ of power supply, and the GND pin meets power-V-; Described PMOS pipe V1 source S meets the positive V+ of power supply, and drain D meets power resistor R3, and the other termination power of power resistor R3 is born V-.
6. a kind of airborne register independent current source according to claim 5 is characterized in that described operational amplification circuit is comprised of operational amplifier and reference voltage source or is comprised of the LT6650 chip.
7. a kind of airborne register independent current source according to claim 1, it is characterized in that, described power supply voting unit [4] comprises power supply voting circuit [41], power control circuit [42], described power supply voting circuit [41] comprises power supply voting control chip LTC4412, main power source isolating diode D1, mains switch PMOS pipe V2 and V3, power control circuit [42] comprises control NMOS pipe V4 and the input pull-up resistor R4 that is connected with its drain D, the anode of described main power source isolating diode D1 is connected to first input end VIN3, negative terminal is received output VO2, the grid G of mains switch PMOS pipe V2 and V3 is connected to the GATE end of power supply voting control chip LTC4412, the SENSE of power supply voting control chip LTC4412 terminates to output VO2, the second input VIN4 is connected to the drain D of IN end and the mains switch PMOS pipe V2 of power supply voting control chip LTC4412, the drain D of V3 is received output VO2, the source S of mains switch PMOS pipe V2 and V3 connects together, the other end of R4 is connected to the second input VIN4, and the drain D of control NMOS pipe V4 is connected to the CTRL end of power supply voting control chip LTC4412.
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| CN104050733A (en) * | 2014-06-19 | 2014-09-17 | 北京华航海鹰新技术开发有限责任公司 | Audio recording system for aircraft |
| CN105846541A (en) * | 2016-05-23 | 2016-08-10 | 国神光电科技（上海）有限公司 | Power-down protection circuit |
| CN106364682A (en) * | 2016-09-28 | 2017-02-01 | 成都凯天电子股份有限公司 | Uninterruptible emergency power supply system for flight parameter recorder |
| CN106816932A (en) * | 2017-03-15 | 2017-06-09 | 彭旭华 | A kind of dynamic lithium battery fast charge method |
| CN110350653A (en) * | 2019-07-15 | 2019-10-18 | 西安应用光学研究所 | A kind of stable DC power supply conversion control circuit for airborne photoelectric stabilized platform |
| CN110596614A (en) * | 2019-07-17 | 2019-12-20 | 陕西千山航空电子有限责任公司 | BIT method for protecting independent power supply module in recorder |
| CN112506843A (en) * | 2020-12-18 | 2021-03-16 | 陕西航空电气有限责任公司 | Electrical interface for embedded software upgrading of generator controller |
| CN113285594A (en) * | 2021-05-28 | 2021-08-20 | 太原航空仪表有限公司 | Airborne aviation 270V power supply |
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| CN110596614B (en) * | 2019-07-17 | 2022-03-08 | 陕西千山航空电子有限责任公司 | BIT method for protecting independent power supply module in recorder |
| CN112506843A (en) * | 2020-12-18 | 2021-03-16 | 陕西航空电气有限责任公司 | Electrical interface for embedded software upgrading of generator controller |
| CN112506843B (en) * | 2020-12-18 | 2023-05-05 | 陕西航空电气有限责任公司 | Electric interface for embedded software upgrade of generator controller |
| CN113285594A (en) * | 2021-05-28 | 2021-08-20 | 太原航空仪表有限公司 | Airborne aviation 270V power supply |
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