CN110347078B - Mars detector autonomous wake-up control system and method - Google Patents
Mars detector autonomous wake-up control system and method Download PDFInfo
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- CN110347078B CN110347078B CN201910576270.XA CN201910576270A CN110347078B CN 110347078 B CN110347078 B CN 110347078B CN 201910576270 A CN201910576270 A CN 201910576270A CN 110347078 B CN110347078 B CN 110347078B
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Abstract
The invention relates to an autonomous wake-up control system and method for a Mars probe. After the fire goes out at night, the solar cell array outputs power to a storage battery pack heating zone through the dormancy power supply branch; with the gradual increase of the output power of the solar array, the voltage of the bus rises, and after the voltage reaches a wake-up threshold, the power module switch wake-up circuit works and outputs a power switch wake-up signal to the temperature relay; the temperature relay is in a disconnected state; along with the increase of the output power of the solar cell array, the temperature of the storage battery pack gradually rises, after the working temperature of the storage battery pack is reached, the temperature relay is automatically switched on, the power switch wake-up signal drives the power module to switch on and off, the power module is connected to a bus, and meanwhile, a heating belt is cut off; the power module works to generate a working power supply, and the working power supply generates a discharging switch wake-up signal and a bus switch wake-up signal through the discharging and bus switch wake-up circuit, and respectively drives the discharging switch and the bus switch to be automatically closed to complete autonomous wake-up.
Description
Technical Field
The invention relates to the field of aerospace deep space exploration, in particular to an autonomous wake-up control system for a Mars probe.
Background
Deep space exploration is an exploration for the army of a wider solar system and a space on the basis of obtaining great achievements in the field of satellites, manned space and space stations. Mars is one of the planets closest to the earth in the solar system, and has important scientific significance for exploring the origin of universe and life and researching the evolution process of the earth, which belongs to the same category as the earth.
The rarefied and dry atmosphere and wind on the spark can lift dust from the surface of the spark, thereby causing dust storm. Under the condition of strong dust storm, the output power of the solar cell array is seriously reduced during the daytime, and in order to avoid the over-discharge of the storage battery to reduce the service life of the storage battery, the over-discharge protection of the storage battery needs to be carried out, so that the dormancy awakening function needs to be designed. When the capacity of the storage battery pack is insufficient and the output power of the solar cell array cannot meet the load requirement, part of the load is cut off through the power distribution switch, the whole device enters a minimum working mode, when the output power of the solar cell array is still insufficient, the detector is set in a dormant mode, all the loads are disconnected, and when the illumination condition is well changed, the detector is automatically awakened through the automatic awakening circuit to work.
At present, China firstly carries out Mars surveying tasks. The spark environment is complex, and if the temperature is low during awakening, the discharge function of the storage battery pack is influenced, and even the storage battery pack cannot discharge. Therefore, the autonomous wake-up technology of the complex environment of the mars is an urgent problem to be solved.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the invention provides an autonomous wake-up control system for a Mars probe. Due to the fact that the Mars environment is complex, in order to prevent the storage battery pack from being over-discharged, the detector enters a sleep mode, and after the illumination condition is well changed, the detector is automatically awakened to work. The method is realized by a very simple analog circuit, software is not needed, and the control method is simple, high in reliability and easy to realize in engineering.
The technical solution of the invention is as follows: a mars detector is from control system that awakens up, this control system includes solar cell array, MPPT circuit, dormancy power supply branch road, storage battery, power module, heating tape, temperature relay, power module switch awakening circuit, discharge and generating line change over switch awakening circuit, power module switch Kd, generating line change over switch K4, discharge switch K2; the heating belt and the temperature relay are attached to the storage battery monomer;
one end of the solar cell array is grounded, the other end of the solar cell array is connected with the MPPT circuit and the sleep power supply branch, and the other end of the MPPT circuit is connected with the bus; one end of the storage battery pack is grounded, and the other end of the storage battery pack is connected to the bus through a discharge switch K2; the bus transfer switch K4 is a single-end double-throw switch, the immobile end of the bus transfer switch K4 is connected with a bus, and the mobile end can be selectively connected with a dormant power supply circuit or a bus output end; the power module switch Kd is also a single-end double-throw switch, the fixed end of the power module switch Kd is connected to the bus, the movable end of the power module switch Kd can be selectively connected with a heating belt or a power module, the power module is connected with a discharging and bus transfer switch awakening circuit, the bus transfer switch awakening circuit is used for generating a discharging switch awakening signal and a bus transfer switch awakening signal, the discharging switch awakening signal is connected with an awakening solenoid of a discharging switch K2, and the awakening solenoid connected with a discharging switch K2 is connected to the bus through a three-terminal regulator; the bus change-over switch awakening signal is connected with an awakening solenoid of the bus change-over switch K4, and the awakening solenoid of the bus change-over switch K4 is connected to the bus through a three-terminal regulator; one end of the power module switch awakening circuit is connected with the bus, the other end of the power module switch awakening circuit is connected with the temperature relay and used for generating and outputting a power module switch awakening signal to the temperature relay, the other end of the temperature relay is connected with an awakening solenoid of the power module switch kd, and the awakening solenoid of the power module switch kd is connected to the bus through the three-terminal regulator.
The power module switch wake-up circuit comprises a first wake-up allowing switch K1-1, a second wake-up allowing switch K1-2, a third wake-up allowing switch K1-3, a fourth wake-up allowing switch K1-4, a voltage regulator tube W1, W2, W3, W4, a voltage regulator resistor R11, R12, R13, R14, a current limiting resistor R21, R22, R23, R24, R25, R26, R27, R28, a triode M1, M2, M3 and M4;
one end of a first awakening allowing switch K1-1 is connected with the bus through a first voltage-regulator tube W1, and the other end of the first awakening allowing switch K1-1 is grounded through a voltage-regulator resistor R11; the connection point of the first wake-up allowing switch K1-1 and the voltage stabilizing resistor R11 is marked as a first node;
one end of a second awakening allowing switch K1-2 is connected with the bus through a second voltage-regulator tube W2, and the other end of the second awakening allowing switch K1-2 is grounded through a voltage-regulator resistor R12; the connection point of the first wake-up allowing switch K1-2 and the voltage stabilizing resistor R12 is marked as a second node;
one end of a third awakening allowing switch K1-3 is connected with the bus through a third voltage-regulator tube W3, and the other end of the third awakening allowing switch K1-3 is grounded through a voltage-regulator resistor R13; the connection point of the first wake-up allowing switch K1-3 and the voltage stabilizing resistor R13 is marked as a third node;
one end of a third awakening allowing switch K1-4 is connected with the bus through a fourth voltage regulator tube W4, and the other end of the third awakening allowing switch K1-4 is grounded through a voltage regulator resistor R14; the connection point of the first wake-up allowing switch K1-4 and the voltage stabilizing resistor R14 is marked as a fourth node;
the bases of the triodes M1 and M3 are grounded through a current-limiting resistor R22 and a current-limiting resistor R25 respectively; meanwhile, the base electrode of the triode M1 is also connected with a first node through a current limiting resistor R21; the base electrode of the triode M3 is also connected with a second node through a current limiting resistor R26; the first node is connected with the second node; the collectors of the transistors M1 and M3 are commonly connected with one end of the temperature relay; the emitter of the triode M1 is connected with the collector of the triode M2; the emitter of the triode M3 is connected with the collector of the triode M4;
the bases of the triodes M2 and M4 are grounded through a current-limiting resistor R24 and a current-limiting resistor R28 respectively; meanwhile, the base electrode of the triode M2 is also connected with a third node through a current limiting resistor R23; the base electrode of the triode M4 is also connected with a fourth node through a current limiting resistor R27; the third node is connected with the fourth node; the emitters of transistors M2 and M4 are commonly grounded.
The Mars probe autonomous wake-up control system further comprises diodes D1-1, D1-2, D1-3 and D1-4, wherein the positive end of the diode D1-1 is connected with the first node, and the negative end of the diode D1-1 is connected with a resistor R21; the positive end of the diode D1-2 is connected with the second node, and the negative end is connected with the resistor R26; the positive end of the diode D1-3 is connected with the third node, and the negative end is connected with the resistor R23; the positive terminal of the diode D1-4 is connected to the fourth node, and the negative terminal is connected to the resistor R27.
The discharging and bus switching switch wake-up circuit comprises a first pulse trigger, a diode D2-1, a diode D2-2, a fifth wake-up allowing switch K1-5, a sixth wake-up allowing switch K1-6, a first driving circuit, a resistor R31, a resistor R32, a resistor R33 and a resistor R34;
the input end of the first pulse trigger is connected with the output end of the power supply module, the output end of the first pulse trigger is divided into two paths, one path is connected with one end of a fifth awakening allowing switch K1-5 through a diode D2-1, the other end of the fifth awakening allowing switch K1-5 is connected with resistors R31 and R32 in parallel, and the resistors R31 and R32 are connected with a first driving circuit; the other path is connected with one end of a sixth awakening allowing switch K1-6 through a diode D2-2, and the other end of the sixth awakening allowing switch K1-6 is connected with resistors R33 and R34 in parallel to the first driving circuit; the first pulse trigger works to generate a pulse signal, and the pulse signal passes through the first driving circuit and outputs two paths of low-level signals which are respectively used as a discharging switch wake-up signal and a bus transfer switch wake-up signal.
The discharging and bus changeover switch awakening circuit further comprises a second pulse trigger, diodes D2-3 and D2-4, the second pulse trigger and the first pulse trigger form redundancy backup, the input end of the second pulse trigger and the first pulse trigger are connected in parallel to the output end of the power module, the output end of the second pulse trigger is divided into two paths, and one path of the second pulse trigger and the diode D2-1 are connected in parallel to a fifth awakening allowing switch K1-5 through the diode D2-3; the other path is connected with a diode D2-2 in parallel through a diode D2-4 to form a sixth wake-up enabling switch K1-6.
The independent wake-up control system for the Mars probe further comprises a second driving circuit, the second driving circuit and the first driving circuit form a redundant backup, the other end of the fifth wake-up allowing switch K1-5 is simultaneously connected with resistors R35 and R36 in parallel, and the resistors R35 and R36 are connected with the second driving circuit; the other end of the sixth wake-up allowing switch K1-6 is simultaneously connected with resistors R37 and R38 in parallel, and the resistors R37 and R38 are connected with the second driving circuit; the second driving circuit outputs two paths of low level signals which are respectively connected in parallel with the two paths of low level signals output by the first driving circuit to obtain a discharging switch wake-up signal and a bus transfer switch wake-up signal.
And the power module switch awakening coil Kd is connected to the bus through a three-terminal regulator.
And the wake-up coil of the discharge switch K2 is connected to the bus through a three-terminal regulator.
And the awakening coil of the bus changeover switch K4 is connected to the bus through a three-terminal regulator.
The temperature relay adopts two series and two parallel contact induction type temperature relays.
The other technical solution of the invention is as follows: a Mars detector autonomous wake-up control method comprises the following steps:
step one, after a fire goes out at night, the solar cell array outputs power to a storage battery pack heating zone through a dormant power supply branch;
step two, as the output power of the solar array is gradually increased, the voltage of the bus is increased, and after the voltage reaches a wake-up threshold, the power module switch wake-up circuit works and outputs a power switch wake-up signal to the temperature relay; the temperature relay is in a disconnected state;
step three, along with the increase of the output power of the solar cell array, the temperature of the storage battery pack is gradually increased, after the working temperature of the storage battery pack is reached, the temperature relay is automatically switched on, the power switch wake-up signal drives the power module switch kd to act, the power module is connected to a bus, and meanwhile, a heating belt is cut off;
and fourthly, the power supply module works to generate a working power supply, the working power supply generates a discharge switch wake-up signal and a bus switch wake-up signal through the discharge and bus switch wake-up circuit, the discharge switch wake-up signal and the bus switch wake-up signal respectively drive the discharge switch and the bus switch to be automatically closed, autonomous wake-up is completed, and the whole device is normally powered by energy.
Compared with the prior art, the invention has the beneficial effects that:
(1) the invention adopts the dormancy power supply branch and the MPPT circuit, and solves the problem of the solar array power output access of the MPPT circuit when the power module is not powered;
(2) the MPPT circuit is adopted in the invention, and the maximum power point tracking function of the solar cell array is realized. During the operation of the Mars surface, the output power of the solar cell array is greatly influenced due to the actions of temperature, light intensity, atmosphere, dust and other Mars environments, the MPPT circuit utilizes the output power of the solar cell array to the maximum extent, the solar array area and the discharge depth of a storage battery are reduced, the weight of a power supply is lightened, and the service life of the storage battery is prolonged.
(3) The first pulse trigger and the second pulse trigger are retriggerable monostable triggers and are connected in a high-reliability parallel connection mode, the first driving circuit and the second driving circuit adopt a dual-redundancy decoding output driving circuit and are connected in a high-reliability parallel connection mode, and the reliability of a discharging switch wake-up signal and a bus transfer switch wake-up signal is improved.
(4) The bus switch wake-up signal, the discharge switch wake-up signal and the bus switch wake-up signal are connected with the wake-up solenoid by adopting the three-terminal voltage regulator, so that the phenomenon of overvoltage of the relay solenoid caused by the increase of the bus voltage at the wake-up moment is prevented.
(5) The temperature relay adopts the high-reliability contact induction type temperature relay with two series-parallel connection modes, and ensures that the working temperature of the storage battery is met after the awakening condition is met.
Drawings
FIG. 1 is a circuit diagram of the Mars probe autonomous wake-up control system after sleep;
fig. 2 is a circuit diagram of the Mars probe autonomous wake-up control system after wake-up according to the present invention. .
Detailed Description
The invention is described in detail below with reference to the figures and specific examples.
As shown in fig. 1, the invention provides an autonomous wake-up control system for a mars detector, which comprises a solar cell array 1, an MPPT circuit 2, a sleep power supply branch 3, a storage battery pack 4, a power module 5, a heating belt 6, a temperature relay 7, a power module switch wake-up circuit 8, a discharge and bus transfer switch wake-up circuit 11, a power module switch Kd, a bus transfer switch K4 and a discharge switch K2; and a heating belt 6 and a temperature relay 7 are attached to the storage battery pack monomer.
One end of the solar cell array 1 is grounded, the other end of the solar cell array is connected with the MPPT circuit 2 and the dormancy power supply branch 3, and the other end of the MPPT circuit 2 is connected with a bus; one end of the storage battery pack 4 is grounded, and the other end of the storage battery pack is connected to the bus through a discharge switch K212; the bus switch K413 is a single-end double-throw switch, the fixed end of the bus switch is connected with a bus, and the movable end of the bus switch can be selectively connected with the dormant power supply circuit 3 or the output end of the bus; the power module switch Kd14 is also a single-ended double-throw switch, the immobile end of which is connected to the bus, and the mobile end of which is selectively connected to the heating belt 6, or selectively connected to the power module 5, the power module 5 is connected to the discharging and bus switch wake-up circuit 11, the discharging and bus switch wake-up circuit 11 is used for generating a discharging switch wake-up signal and a bus switch wake-up signal, the discharging switch wake-up signal is connected to the wake-up solenoid of the discharging switch K212, and the wake-up solenoid of the discharging switch K212 is connected to the bus through a three-terminal regulator; the bus transfer switch wake-up signal is connected with a wake-up coil of the bus transfer switch K413, and the wake-up coil of the bus transfer switch K413 is connected to the bus through the three-terminal regulator; one end of the power module switch awakening circuit 8 is connected with the bus, the other end of the power module switch awakening circuit is connected with the temperature relay and used for generating and outputting a power module switch awakening signal to the temperature relay 7, the other end of the temperature relay 7 is connected with an awakening coil of the power module switch kd14, and the awakening coil of the power module switch kd14 is connected to the bus through a three-terminal regulator.
The power module switch wake-up circuit 8 comprises a first wake-up allowing switch K1-1, a second wake-up allowing switch K1-2, a third wake-up allowing switch K1-3, a fourth wake-up allowing switch K1-4, a voltage regulator tube W1, W2, W3, W4, a voltage regulator resistor R11, R12, R13, R14, a current limiting resistor R21, R22, R23, R24, R25, R26, R27, R28, a triode M1, M2, M3 and M4;
one end of a first awakening allowing switch K1-1 is connected with the bus through a first voltage-regulator tube W1, and the other end of the first awakening allowing switch K1-1 is grounded through a voltage-regulator resistor R11; the connection point of the first wake-up allowing switch K1-1 and the voltage stabilizing resistor R11 is marked as a first node;
one end of a second awakening allowing switch K1-2 is connected with the bus through a second voltage-regulator tube W2, and the other end of the second awakening allowing switch K1-2 is grounded through a voltage-regulator resistor R12; the connection point of the first wake-up allowing switch K1-2 and the voltage stabilizing resistor R12 is marked as a second node;
one end of a third awakening allowing switch K1-3 is connected with the bus through a third voltage-regulator tube W3, and the other end of the third awakening allowing switch K1-3 is grounded through a voltage-regulator resistor R13; the connection point of the first wake-up allowing switch K1-3 and the voltage stabilizing resistor R13 is marked as a third node;
one end of a third awakening allowing switch K1-4 is connected with the bus through a fourth voltage regulator tube W4, and the other end of the third awakening allowing switch K1-4 is grounded through a voltage regulator resistor R14; the connection point of the first wake-up allowing switch K1-4 and the voltage stabilizing resistor R14 is marked as a fourth node;
the bases of the triodes M1 and M3 are grounded through a current-limiting resistor R22 and a current-limiting resistor R25 respectively; meanwhile, the base electrode of the triode M1 is also connected with a first node through a current limiting resistor R21; the base electrode of the triode M3 is also connected with a second node through a current limiting resistor R26; the first node is connected with the second node; the collectors of the transistors M1 and M3 are commonly connected with one end of the temperature relay 7; the emitter of the triode M1 is connected with the collector of the triode M2; the emitter of the triode M3 is connected with the collector of the triode M4;
the bases of the triodes M2 and M4 are grounded through a current-limiting resistor R24 and a current-limiting resistor R28 respectively; meanwhile, the base electrode of the triode M2 is also connected with a third node through a current limiting resistor R23; the base electrode of the triode M4 is also connected with a fourth node through a current limiting resistor R27; the third node is connected with the fourth node; the emitters of transistors M2 and M4 are commonly grounded.
As a further preferable scheme, the power module switch wake-up circuit 8 further includes diodes D1-1, D1-2, D1-3, and D1-4, wherein the positive terminal of the diode D1-1 is connected to the first node, and the negative terminal is connected to the resistor R21; the positive end of the diode D1-2 is connected with the second node, and the negative end is connected with the resistor R26; the positive end of the diode D1-3 is connected with the third node, and the negative end is connected with the resistor R23; the positive terminal of the diode D1-4 is connected to the fourth node, and the negative terminal is connected to the resistor R27.
The discharging and bus switching switch wake-up circuit 11 comprises a first pulse trigger, a diode D2-1, a diode D2-2, a fifth wake-up allowing switch K1-5, a sixth wake-up allowing switch K1-6, a first driving circuit, a resistor R31, a resistor R32, a resistor R33 and a resistor R34;
the input end of a first pulse trigger 9-1 is connected with the output end of a power supply module, the output end of the first pulse trigger 9-1 is divided into two paths, one path is connected with one end of a fifth awakening allowing switch K1-5 through a diode D2-1, the other end of the fifth awakening allowing switch K1-5 is connected with resistors R31 and R32 in parallel, and the resistors R31 and R32 are connected with a first driving circuit 10; the other path is connected with one end of a sixth awakening allowing switch K1-6 through a diode D2-2, and the other end of the sixth awakening allowing switch K1-6 is connected with resistors R33 and R34 in parallel to the first driving circuit; the first pulse trigger 9-1 works to generate a pulse signal, and two paths of low level signals are output through the first driving circuit 10 and respectively used as a discharging switch wake-up signal and a bus transfer switch wake-up signal.
As a further preferable scheme, the discharging and bus switching switch wake-up circuit 11 further includes a second pulse trigger, diodes D2-3 and D2-4, the second pulse trigger 9-2 and the first pulse trigger 9-1 form a redundant backup, the input end of the second pulse trigger 9-2 and the first pulse trigger 9-1 are connected in parallel to the output end of the power module, the output end is divided into two paths, and one path is connected in parallel with the diode D2-1 through the diode D2-3 to connect the fifth wake-up allowing switch K1-5; the other path is connected with a diode D2-2 in parallel through a diode D2-4 to form a sixth wake-up enabling switch K1-6.
As a further preferable scheme, the discharging and bus switching switch wake-up circuit 11 further includes a second driving circuit, the second driving circuit and the first driving circuit form a redundant backup, the other end of the fifth wake-up allowing switch K1-5 is simultaneously connected in parallel with resistors R35 and R36, and the resistors R35 and R36 are connected with the second driving circuit; the other end of the sixth wake-up allowing switch K1-6 is simultaneously connected with resistors R37 and R38 in parallel, and the resistors R37 and R38 are connected with the second driving circuit; the second driving circuit outputs two paths of low level signals which are respectively connected in parallel with the two paths of low level signals output by the first driving circuit to obtain a discharging switch wake-up signal and a bus transfer switch wake-up signal.
The working principle of the independent wake-up control system for the Mars detector is as follows:
when the Mars detector is in a dormant state, the power module switch Kd14 is connected with the heating belt 6, the discharge switch K212 is in an off state, the first awakening allowing switch K1-1, the second awakening allowing switch K1-2, the third awakening allowing switch K1-3 and the fourth awakening allowing switch K1-4 are in an on state, the temperature relay 7 is in an off state, and the bus switching switch K413 connects the dormant power supply branch 12 to the bus output end.
After the fire goes out at night, the output power of the solar cell array 1 is supplied to a heating belt 6 of the storage battery pack through the dormancy power supply branch 3, the heating belt 6 is connected with a bus through a power module switch Kd14, the output power of the solar cell array 1 is gradually increased, the bus voltage is increased, after a wake-up threshold is reached, a power module switch wake-up circuit 8 works, and the power module switch wake-up circuit 8 outputs a power switch wake-up signal low-level signal to a temperature relay 7; the temperature relay 7 is in an off state, the temperature of the storage battery pack gradually rises along with the increase of the output power of the solar battery array 1, the temperature relay 7 is automatically switched on after the working temperature of the storage battery pack is reached, at the moment, a power switch wake-up signal low level signal drives a power module switch kd14 to act, a power module 5 is connected to a bus, a heating belt 6 is cut off, the power module 5 works to generate a working power supply, a pulse signal is generated through a first pulse trigger and a second pulse trigger, the first pulse trigger and the second pulse trigger form two parallel circuits to increase the reliability of the circuit, the pulse signal output is isolated through an isolating diode and then is output to a first driving circuit and a second driving circuit after passing through a fifth wake-up allowing switch K1-5 and a sixth wake-up allowing switch K1-6, the two parallel circuits are formed by the first driving circuit and the second driving circuit to increase the reliability of the circuit, the first driving circuit and the second driving circuit work to output a discharging switch awakening signal and a bus transfer switch awakening signal, wherein the discharging switch awakening signal and the bus transfer switch awakening signal are low-level signals, the discharging switch 12 and the bus transfer switch 13 are driven to act at the same time, the discharging switch 12 enables the storage battery pack 4 to be connected into a bus, the bus transfer switch 13 cuts off the dormant power supply branch 3, and the bus voltage is connected with the bus for output. The power of the solar cell array 1 is output to a bus through the MPPT circuit 2, and meanwhile, the storage battery pack 4 is charged, so that the autonomous awakening is completed, the power supply of the whole device is normal, and a patrol detection task can be developed.
In order to achieve a better technical effect, the invention also adopts the following technology:
(1) the temperature relay adopts a high-reliability contact induction type temperature relay with two series-parallel connection modes, so that the working temperature of the storage battery after the awakening condition is met is ensured.
(2) The first pulse trigger and the second pulse trigger are retriggerable monostable triggers and are connected in a high-reliability parallel connection mode, and the reliability of pulse generation is improved.
(3) The first driving circuit and the second driving circuit adopt a dual-redundancy decoding output driving circuit and are connected in a high-reliability parallel connection mode, and reliability of a discharging switch wake-up signal and a bus transfer switch wake-up signal is improved.
(4) The power module switch wake-up signal, the discharge switch wake-up signal and the bus transfer switch wake-up signal are connected with the wake-up solenoid by adopting the three-terminal voltage stabilizer, so that the phenomenon that the voltage of the bus is increased at the moment of wake-up to cause overvoltage of the relay solenoid is prevented.
(5) The discharge switch adopts a magnetic latching relay in a high-reliability parallel connection mode.
(6) And the bus transfer switch adopts a magnetic latching relay in a high-reliability parallel connection mode.
(7) And the power module switch adopts a high-reliability magnetic latching relay with two parallel strings.
(8) In order to meet the complex environment of the Mars surface and utilize the output power of the solar array to the maximum, the MPPT circuit adopts the maximum power point tracking technology of the solar cell array.
Based on the independent wake-up control system for the Mars probe, the invention provides an independent wake-up control method for the Mars probe, which comprises the following steps:
step one, after a fire goes out at night, the solar cell array outputs power to a storage battery pack heating zone through a dormant power supply branch;
step two, as the output power of the solar array is gradually increased, the bus voltage is increased, and after the bus voltage reaches a wake-up threshold, the power module switch wake-up circuit 8 works and outputs a power switch wake-up signal to the temperature relay 7; the temperature relay 7 is in an off state;
step three, along with the increase of the output power of the solar cell array 1, the temperature of the storage battery pack is gradually increased, after the working temperature of the storage battery pack is reached, the temperature relay is automatically switched on, the power switch wake-up signal drives the power module switch 14 to act, the power module 5 is connected to the bus, and the heating belt 6 is cut off;
and step four, the power supply module 5 works to generate a working power supply, the working power supply generates a discharge switch wake-up signal and a bus switch wake-up signal through the discharge and bus switch wake-up circuit 11, the discharge switch wake-up signal and the bus switch wake-up signal respectively drive the discharge switch and the bus switch to be automatically closed, autonomous wake-up is completed, and the whole device is normally powered by energy.
The Mars detector autonomous wake-up control system adopted by the invention realizes the on-orbit autonomous control of the Mars in a complex environment, solves the problem that the temperature of a storage battery cannot be effectively charged and discharged after the wake-up condition is met, solves the problem that the MPPT circuit outputs the power of a solar array when a power module is not electrified, ensures that the action of a relay at the wake-up time does not generate high-voltage impact, improves the reliability and safety of the on-orbit operation of the Mars detector, has simple structure, high reliability and easy engineering realization, and has very important application value in the field of aerospace deep space detection.
While the present invention has been described in detail by the above embodiments, it should be appreciated that the above description should not be construed as limiting the invention. Various modifications and alterations to this invention will become apparent to those skilled in the art upon reading the foregoing description. Accordingly, the scope of the invention should be determined from the following claims.
Claims (11)
1. A mars detector autonomous wake-up control system is characterized by comprising a solar cell array (1), an MPPT circuit (2), a dormancy power supply branch (3), a storage battery (4), a power module (5), a heating belt (6), a temperature relay (7), a power module switch wake-up circuit (8), a discharge and bus transfer switch wake-up circuit (11), a power module switch Kd, a bus transfer switch K4 and a discharge switch K2; the heating belt (6) and the temperature relay (7) are attached to the storage battery pack monomer;
one end of the solar cell array (1) is grounded, the other end of the solar cell array is connected with the MPPT circuit (2) and the dormancy power supply branch (3), and the other end of the MPPT circuit (2) is connected with a bus; one end of the storage battery pack (4) is grounded, and the other end of the storage battery pack is connected to the bus through a discharge switch K2 (12); the bus transfer switch K4(13) is a single-end double-throw switch, the fixed end of the bus transfer switch is connected with a bus, and the movable end can be selectively connected with the dormant power supply circuit (3) or the bus output end; the power module switch Kd (14) is also a single-end double-throw switch, the fixed end of the power module switch Kd (14) is connected to the bus, the movable end of the power module switch Kd can be selectively connected with the heating belt (6) or can be selectively connected with the power module (5), the power module (5) is connected with the discharging and bus switch awakening circuit (11), the bus switch awakening circuit (11) is used for generating a discharging switch awakening signal and a bus switch awakening signal, the discharging switch awakening signal is connected with an awakening solenoid of the discharging switch K2(12), and the awakening solenoid connected with the discharging switch K2(12) is connected to the bus through a three-terminal regulator; the bus change-over switch awakening signal is connected with an awakening solenoid of the bus change-over switch K4(13), and the awakening solenoid of the bus change-over switch K4(13) is connected to the bus through a three-terminal regulator; one end of the power module switch awakening circuit (8) is connected with the bus, the other end of the power module switch awakening circuit is connected with the temperature relay and used for generating an output power module switch awakening signal to the temperature relay (7), the other end of the temperature relay (7) is connected with an awakening coil of the power module switch kd (14), and the awakening coil of the power module switch kd (14) is connected to the bus through the three-terminal regulator;
after the fire goes out at night, the solar cell array outputs power to a storage battery pack heating zone through the dormancy power supply branch; with the gradual increase of the output power of the solar array, the voltage of the bus rises, and after the voltage reaches a wake-up threshold, a power supply module switch wake-up circuit (8) works and outputs a power supply switch wake-up signal to a temperature relay (7); the temperature relay (7) is in a disconnected state;
along with the increase of the output power of the solar cell array (1), the temperature of the storage battery pack gradually rises, after the working temperature of the storage battery pack is reached, the temperature relay is automatically switched on, the power switch wake-up signal drives the power module switch Kd to act, the power module (5) is connected to the bus, and the heating belt (6) is cut off;
the power supply module (5) works to generate a working power supply, the working power supply generates a discharging switch awakening signal and a bus switch awakening signal through the discharging and bus switch awakening circuit (11), the discharging switch awakening signal and the bus switch awakening signal respectively drive the discharging switch and the bus switch to be automatically closed, autonomous awakening is completed, and the whole device is normally powered by energy.
2. A mars detector autonomous wake-up control system according to claim 1, wherein the power module switch wake-up circuit (8) comprises a first wake-up enabling switch K1-1, a second wake-up enabling switch K1-2, a third wake-up enabling switch K1-3, a fourth wake-up enabling switch K1-4, a voltage regulator tube W1, W2, W3, W4, a voltage regulator resistor R11, R12, R13, R14, a current limiting resistor R21, R22, R23, R24, R25, R26, R27, R28, a triode M1, M2, M3, M4;
one end of a first awakening allowing switch K1-1 is connected with the bus through a first voltage-regulator tube W1, and the other end of the first awakening allowing switch K1-1 is grounded through a voltage-regulator resistor R11; the connection point of the first wake-up allowing switch K1-1 and the voltage stabilizing resistor R11 is marked as a first node;
one end of a second awakening allowing switch K1-2 is connected with the bus through a second voltage-regulator tube W2, and the other end of the second awakening allowing switch K1-2 is grounded through a voltage-regulator resistor R12; the connection point of the first wake-up allowing switch K1-2 and the voltage stabilizing resistor R12 is marked as a second node;
one end of a third awakening allowing switch K1-3 is connected with the bus through a third voltage-regulator tube W3, and the other end of the third awakening allowing switch K1-3 is grounded through a voltage-regulator resistor R13; the connection point of the first wake-up allowing switch K1-3 and the voltage stabilizing resistor R13 is marked as a third node;
one end of a third awakening allowing switch K1-4 is connected with the bus through a fourth voltage regulator tube W4, and the other end of the third awakening allowing switch K1-4 is grounded through a voltage regulator resistor R14; the connection point of the first wake-up allowing switch K1-4 and the voltage stabilizing resistor R14 is marked as a fourth node;
the bases of the triodes M1 and M3 are grounded through a current-limiting resistor R22 and a current-limiting resistor R25 respectively; meanwhile, the base electrode of the triode M1 is also connected with a first node through a current limiting resistor R21; the base electrode of the triode M3 is also connected with a second node through a current limiting resistor R26; the first node is connected with the second node; the collectors of the triodes M1 and M3 are commonly connected with one end of a temperature relay (7); the emitter of the triode M1 is connected with the collector of the triode M2; the emitter of the triode M3 is connected with the collector of the triode M4;
the bases of the triodes M2 and M4 are grounded through a current-limiting resistor R24 and a current-limiting resistor R28 respectively; meanwhile, the base electrode of the triode M2 is also connected with a third node through a current limiting resistor R23; the base electrode of the triode M4 is also connected with a fourth node through a current limiting resistor R27; the third node is connected with the fourth node; the emitters of transistors M2 and M4 are commonly grounded.
3. The Mars probe autonomous wake-up control system according to claim 2, further comprising diodes D1-1, D1-2, D1-3 and D1-4, wherein the positive terminal of the diode D1-1 is connected to the first node, and the negative terminal is connected to the resistor R21; the positive end of the diode D1-2 is connected with the second node, and the negative end is connected with the resistor R26; the positive end of the diode D1-3 is connected with the third node, and the negative end is connected with the resistor R23; the positive terminal of the diode D1-4 is connected to the fourth node, and the negative terminal is connected to the resistor R27.
4. The Mars probe autonomous wake-up control system according to claim 1, wherein the discharging and bus bar switch wake-up circuit comprises a first pulse trigger, a diode D2-1, a diode D2-2, a fifth wake-up allowing switch K1-5, a sixth wake-up allowing switch K1-6, a first driving circuit, a resistor R31, R32, R33, R34;
the input end of a first pulse trigger (9-1) is connected with the output end of a power supply module, the output end of the first pulse trigger (9-1) is divided into two paths, one path is connected with one end of a fifth awakening allowing switch K1-5 through a diode D2-1, the other end of the fifth awakening allowing switch K1-5 is connected with resistors R31 and R32 in parallel, and the resistors R31 and R32 are connected with a first driving circuit (10-1); the other path is connected with one end of a sixth awakening allowing switch K1-6 through a diode D2-2, and the other end of the sixth awakening allowing switch K1-6 is connected with resistors R33 and R34 in parallel to a first driving circuit (10-1); the first pulse trigger (9-1) works to generate a pulse signal, and two paths of low level signals are output through the first driving circuit (10-1) and are respectively used as a discharging switch wake-up signal and a bus transfer switch wake-up signal.
5. The Mars probe autonomous wake-up control system according to claim 1, characterized in that the wake-up circuit (11) of the discharging and bus switching switch further comprises a second pulse trigger (9-2), diodes D2-3 and D2-4, the second pulse trigger (9-2) and the first pulse trigger (9-1) form a redundant backup, the input end of the second pulse trigger (9-2) and the first pulse trigger (9-1) are connected in parallel with the output end of the power module, the output end is divided into two paths, one path is connected in parallel with the diode D2-1 through a diode D2-3 to form a fifth wake-up enabling switch K1-5; the other path is connected with a diode D2-2 in parallel through a diode D2-4 to form a sixth wake-up enabling switch K1-6.
6. A mars probe autonomous wake-up control system according to claim 1, further comprising a second driver circuit (10-2), the second driver circuit (10-2) forming a redundant backup with the first driver circuit, a fifth wake-up enabling switch K1-5 having the other end connected in parallel with resistors R35 and R36, resistors R35 and R36 connected to the second driver circuit (10-2); the other end of the sixth wake-up allowing switch K1-6 is simultaneously connected with resistors R37 and R38 in parallel, and the resistors R37 and R38 are connected with a second driving circuit (10-2); the second driving circuit (10-2) outputs two paths of low level signals which are respectively connected in parallel with the two paths of low level signals output by the first driving circuit (10-1) to obtain a discharging switch wake-up signal and a bus transfer switch wake-up signal.
7. The Mars probe autonomous wake-up control system according to claim 1, wherein the power module switch wake-up solenoid Kd is connected to the bus via a three-terminal regulator.
8. The Mars probe autonomous wake-up control system according to claim 1, characterized in that the wake-up solenoid of the discharging switch K2 is connected to the bus bar through a three-terminal regulator.
9. The Mars probe autonomous wake-up control system according to claim 1, characterized in that the wake-up solenoid of the bus bar switch K4 is connected to the bus bar through a three-terminal regulator.
10. The Mars probe autonomous wake-up control system according to claim 1, characterized in that the temperature relay (7) is a contact induction type temperature relay with two parallel strings.
11. A mars probe autonomous wake-up control method based on the system of claim 1, the method comprising the steps of:
step one, after a fire goes out at night, the solar cell array outputs power to a storage battery pack heating zone through a dormant power supply branch;
step two, as the output power of the solar array is gradually increased, the voltage of the bus is increased, and after the voltage reaches an awakening threshold, a power module switch awakening circuit (8) works and outputs a power switch awakening signal to a temperature relay (7); the temperature relay (7) is in a disconnected state;
step three, along with the increase of the output power of the solar cell array (1), the temperature of the storage battery pack is gradually increased, after the working temperature of the storage battery pack is reached, the temperature relay is automatically switched on, the power switch awakening signal drives the power module switch kd (14) to act, the power module (5) is connected to the bus, and meanwhile, the heating belt (6) is cut off;
and fourthly, the power supply module (5) works to generate a working power supply, the working power supply generates a discharging switch wake-up signal and a bus switch wake-up signal through the discharging and bus switch wake-up circuit (11), and the discharging switch wake-up signal and the bus switch wake-up signal respectively drive the discharging switch and the bus switch to be automatically closed to complete autonomous wake-up, so that the power supply of the whole device is normal.
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| CN113415439A (en) * | 2021-06-22 | 2021-09-21 | 北京空间飞行器总体设计部 | Independent dormancy and awakening system for Mars vehicle |
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