CN114706470B - Variable-power-consumption and high-reliability satellite-borne software thermal control method - Google Patents
Variable-power-consumption and high-reliability satellite-borne software thermal control method Download PDFInfo
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- CN114706470B CN114706470B CN202210384300.9A CN202210384300A CN114706470B CN 114706470 B CN114706470 B CN 114706470B CN 202210384300 A CN202210384300 A CN 202210384300A CN 114706470 B CN114706470 B CN 114706470B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3296—Power saving characterised by the action undertaken by lowering the supply or operating voltage
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3234—Power saving characterised by the action undertaken
- G06F1/3287—Power saving characterised by the action undertaken by switching off individual functional units in the computer system
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
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Abstract
The invention discloses a variable power consumption and high reliability satellite-borne software thermal control method, relates to the field of aerospace application, and solves the problems that the existing method realizes thermal control low power consumption operation by closing a heating loop, does not relate to accurate control of actual thermal control power consumption, causes inflexible power consumption control, cannot flexibly adjust a load working state under certain rated power consumption and the like. Meanwhile, software performs one-way power consumption value and total power consumption threshold value three-out-two error correction every 2 seconds, updates a thermal control command, and resends the control command to the execution mechanism when the control command is identified to be inconsistent with the control command received by the execution mechanism. The method can flexibly adjust the working state according to the actual situation.
Description
Technical Field
The invention relates to a variable power consumption and high-reliability satellite-borne software thermal control method, in particular to a method for downwards regulating thermal control power consumption through data injection when load thermal control and total power consumption are higher than rated power consumption, and ensuring safe work of load.
Background
In the aerospace field, as the functions of the effective load are complex and the volume is increased, the heat control design power consumption is increased, and the whole star energy is limited, so that all heating loops cannot be in a heating state at the same time, and when the load performs specific work, the electronic power consumption (of the heat control part) can be higher than rated power consumption, and the load cannot safely work or cannot execute the specific work. Along with the increase of the track height of load operation and the more complicated of space particle radiation, the single particle turnover phenomenon of electronic components such as CPU (central processing unit) like a DSP (digital signal processor) chip is easy to occur. And the on-orbit running period of the load is long, generally 8 years, the safety and the reliability of software are seriously threatened, the power consumption control of the thermal control part is abnormal, the load hardware circuit is extremely damaged, and the serious consequence of the failure of the whole task is caused.
In the past, the thermal control function of the satellite-borne software realizes thermal control low-power-consumption operation by closing a heating loop, and does not relate to accurate control of thermal control actual power consumption. This results in inflexible control of power consumption, and in a situation where rated power consumption is fixed, the load operating state cannot be flexibly adjusted.
Aiming at the requirements, the invention designs a variable-power-consumption and high-reliability satellite-borne software thermal control method, wherein the thermal control total power consumption threshold can be adjusted through data injection, and the software performs thermal control according to the adjusted total power consumption value. And the software performs primary thermal control in 2 seconds, and when the fact that the preset control command is inconsistent with the control command received by the execution mechanism is identified, the preset control command is re-sent to the execution mechanism, and meanwhile, the thermal control single-way power consumption value and the total power consumption value perform three-taking-two error correction so as to realize safe and reliable thermal control.
Disclosure of Invention
The invention provides a variable-power-consumption and high-reliability satellite-borne software thermal control method, which aims to solve the problems that the existing method realizes thermal control low-power-consumption operation by closing a heating loop, does not involve accurate control of actual power consumption of thermal control, causes inflexible power consumption control, cannot flexibly adjust a load working state under the condition of certain rated power consumption and the like. Under the condition that the total power consumption of the thermal control design is larger than the rated power consumption of the thermal control, the thermal control system ensures the safety of the load and flexible work.
The method is realized by a thermal control system, wherein the thermal control system comprises a CPU, an FPGA, a heating loop and a thermistor; the specific control method is realized by the following steps:
step one, initializing a temperature control mode of each heating loop by the CPU, and performing heat control once every 2 seconds by referring to a sensor, a temperature threshold, a power consumption value of each heating loop and a heat control total power consumption threshold;
step two, the CPU judges whether the timing time reaches 2 seconds, if so, three-out-two error correction is carried out on the power consumption value of each heating loop and the thermal control total power consumption threshold value, and the thermal control total power consumption threshold value is updated;
step three, the CPU controls the FPGA to collect all thermistor temperature values, filters the thermistor temperature values and transmits the filtered thermistor temperature values back to the CPU;
step four, the CPU judges the heating state of each heating loop according to the temperature control mode of each heating loop and the temperature value of the thermistor;
accumulating the power consumption values of the heating loops to be heated one by one according to the priority sequence of the heating loops, and when the accumulated power consumption values are larger than the thermal control total power consumption threshold value, namely: w (W) 1 *H 1 +W 2 *H 2 +……+W i *H i >W y In this case, the i-N-th heating circuit H i ～H N Setting the heating loops to be unheated, and finally determining the heating state of each heating loop; w (W) i For the power consumption value of the ith heating loop, W y Is a thermal control total power consumption threshold;
step six, the CPU sends the heating states of all the heating loops to the FPGA and receives the heating states of all the heating loops transmitted by the FPGA;
step seven, the CPU judges whether the thermal control states of all the sent heating loops are the same as the heating states of all the received heating loops, if so, the step eight is executed; otherwise, the CPU sends the thermal control state to the FPGA again, and the step eight is executed;
and step eight, the CPU controls the FPGA to acquire the heating states of all the heating loops, and the temperature values of the thermistors descend to the satellite platform, so that the step two is returned.
The invention has the beneficial effects that:
according to the thermal control method, the thermal control total power consumption threshold can be changed through the on-orbit data injection method, and the on-orbit thermal control power consumption value can be flexibly adjusted.
According to the thermal control method, when the thermal control total power consumption threshold is adjusted downwards, the load working state can be flexibly controlled.
In the thermal control method, the thermal control single-way power consumption and the thermal control total power consumption threshold value are periodically corrected by three or two, the thermal control state has a rewriting function, and the thermal control function is safer and more reliable.
Drawings
FIG. 1 is a schematic diagram of a thermal control system according to the present invention;
fig. 2 is a flow chart of a variable power consumption, high reliability satellite-borne software thermal control method according to the present invention.
In the figure: 1. satellite platform 2, CPU,3, FPGA,4, heating circuit, 5, thermistor.
Detailed Description
Referring to fig. 1, this embodiment is described as a variable-power-consumption and highly reliable satellite-borne software thermal control method, when the total power consumption of the thermal control design (the sum of the power consumption of all the heating circuits) is greater than the rated power consumption of thermal control (the power consumption allocated to thermal control by hardware), thermal control is performed according to the temperature control mode, the priority order and the total power consumption threshold of thermal control (the power consumption set by software) of each heating circuit, the total power consumption threshold of thermal control can be changed in-orbit through injection, and the thermal control function ensures that the actual total power consumption value of the heating circuit is not greater than the total power consumption threshold of thermal control. In order to prevent the load safety from being affected by the out-of-control power consumption control caused by the fact that the on-orbit thermal control command, the single-way power consumption value and the thermal control total power consumption threshold are overturned by a single photon, software performs one-way power consumption value and thermal control total power consumption threshold three-taking-two error correction every 2 seconds, updates the one-time thermal control command, and resends the control command to the execution mechanism when the fact that the control command is inconsistent with the control command received by the execution mechanism is identified. The method ensures that the thermal control function has high reliability while the threshold value of the total power consumption of the thermal control is variable.
As shown in fig. 1: the thermal control system comprises a satellite platform 1, and a thermal control total power consumption threshold is injected; the CPU 2 as a processor; FPG A3 is used as a thermal control executing mechanism; a heating circuit 4; a thermistor 5; (1) for satellite platform to CPU data streams; (2) CPU to FPGA data flow; (3) the data flow from the FPGA to the CPU is realized; (4) data flow from the FPGA to the heating loop; (5) heating the loop to the FPGA data stream, (6) heating the thermistor to the FPGA data stream; (7) for CPU to satellite platform data streams.
The thermal control total power consumption threshold is injected into the CPU through the satellite platform, the CPU realizes a thermal control algorithm, the FPGA is a thermal control executing mechanism, receives a thermal control command sent by the CPU, collects the temperature value of the thermistor and the state of a heating loop, and sends the data to the CPU.
As shown in fig. 2, the method in this embodiment specifically includes:
1. the CPU initializes the temperature control mode of each heating circuit, reference sensor, temperature threshold, power consumption (W i The power consumption of the ith heating loop, the total N heating loops), the total power consumption threshold (W y ，W y ≤W e The value may be altered on-track by data injection); heating priority order of all heating circuits (the 1 st heating circuit is the most preferred heating circuit, and the N th heating circuit is the lowest preferred heating circuit); the system performs thermal control once every 2 seconds;
2. CPU updates the thermal control total power consumption threshold (W) y ) The data flow sequence is (1), each path of heat control power consumption value (W i ) Performing three-taking two-correcting once on the thermal control total power consumption threshold;
3. collecting and filtering all thermistor temperature values (source code values), wherein the data flow sequence is (6) to (3);
4. judging the heating state of each heating loop according to the temperature control mode of each heating loop and the corresponding reference thermistor temperature value, H i In the state of the ith heating loop, H i A value of 1 for (2) indicates heating and 0 indicates no heating;
5. accumulating the power consumption of the heating loops to be heated one by one according to the priority order, and when the power consumption value is larger than the total power consumption threshold of the thermal control, namely W 1 *H 1 +W 2 *H 2 +……+W i *H i >W y When the heating circuit of the ith to N paths is not heated (H i ～H N All 0); finally, the heating state of each heating loop is determined;
6. sending the heating states of all the heating loops to a thermal control executing mechanism; the data flow sequence is (2), the CPU reads the data back from the FPGA, and the data flow sequence is (3);
7. when the transmitted thermal control state (H i ) And the received thermal control state (H ih ) If not, the thermal control state is sent to the thermal control executing mechanism again, the data flow sequence is (2),otherwise, directly executing the step 8; the executing mechanism controls the heating loop according to the received thermal control state, the data flow sequence is (4), and then the step 8 is executed;
8. the thermal control executing mechanism is controlled to acquire the heating states of all loops, the data flow sequence is (2), the thermal control executing mechanism acquires the heating states, the data flow sequence is (5), the CPU downwards transmits the heating loop states and the temperature values of the thermistors to the satellite platform through engineering telemetry parameters, and the data flow sequence is (7); and then returns to step 2.
According to the embodiment, the total power consumption of the thermal control is adjusted through data injection, the flexibility of the thermal control is improved, and meanwhile, when the threshold value of the thermal control power consumption is adjusted downwards, the working state of the load can be flexibly adjusted; and each path of heat control power consumption value and heat control total power consumption threshold value are subjected to three-in-two error correction in real time, and the heating state has a rewriting function, so that the heat control function is ensured to be safe and reliable.
In this embodiment, when the load temporarily adjusts the system working state to cause the electronic power consumption (of the thermal control portion) to be higher than the rated power consumption, the method of adjusting the power consumption value of the thermal control portion downward can realize that the total electronic power consumption is not higher than the rated power consumption, and ensure the safe work of the load in this mode. The method enables the load to flexibly adjust the working state according to the situation. Total power consumption W suitable for thermal control design z Is larger than the rated power consumption W of thermal control e Is the case in (a).
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (2)
1. A variable power consumption and high reliability satellite-borne software thermal control method is characterized in that: the method is realized by a thermal control system, wherein the thermal control system comprises a CPU, an FPGA, a heating loop and a thermistor; the specific control method is realized by the following steps:
step one, initializing a temperature control mode of each heating loop by the CPU, and performing heat control once every 2 seconds by referring to a sensor, a temperature threshold, a power consumption value of each heating loop and a heat control total power consumption threshold;
step two, the CPU judges whether the timing time reaches 2 seconds, if so, three-out-two error correction is carried out on the power consumption value of each heating loop and the thermal control total power consumption threshold value, and the thermal control total power consumption threshold value is updated;
step three, the CPU controls the FPGA to collect all thermistor temperature values, filters the thermistor temperature values and transmits the filtered thermistor temperature values back to the CPU;
step four, the CPU judges the heating state of each heating loop according to the temperature control mode of each heating loop and the temperature value of the thermistor;
accumulating the power consumption values of the heating loops to be heated one by one according to the priority sequence of the heating loops, and when the accumulated power consumption values are larger than the thermal control total power consumption threshold value, namely: w (W) 1 *H 1 +W 2 *H 2 +……+W i *H i >W y In this case, the i-N-th heating circuit H i ～H N Setting the heating loops to be unheated, and finally determining the heating state of each heating loop; w (W) i For the power consumption value of the ith heating loop, W y Is a thermal control total power consumption threshold;
step six, the CPU sends the heating states of all the heating loops to the FPGA and receives the heating states of all the heating loops transmitted by the FPGA;
step seven, the CPU judges whether the thermal control states of all the sent heating loops are the same as the heating states of all the received heating loops, if so, the step eight is executed; otherwise, the CPU sends the thermal control state of each heating loop to the FPGA again, and the eighth step is executed;
and step eight, the CPU controls the FPGA to acquire the heating states of all the heating loops, and the temperature values of the thermistors descend to the satellite platform, so that the step two is returned.
2. A variable power consumption, high-power-consumption device according to claim 1The reliable satellite-borne software thermal control method is characterized in that: ith heating loop H i When the value of (2) is 1, heating is indicated; h i A value of 0 indicates no heating.
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