CN110286405A - A kind of caliberating device of deep space probe system and application - Google Patents
A kind of caliberating device of deep space probe system and application Download PDFInfo
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Abstract
The present invention relates to a kind of caliberating device applied to deep space probe system and applications, the caliberating device includes: control device, the control signal of each device working condition and each device of generation is controlled for generating control signal, and can carry out data interaction with load controller；DAC for the control signal and digital code value of receiving control device, and generates according to digital code value the level signal of corresponding amplitude；Electronic switching circuit, for level signal to be converted to pulse signal under control of the control means；Detector sampling and conditioning circuit, for carrying out data acquisition and processing (DAP) to detection system or electronic switching circuit signal under control of the control means；Data after analog-to-digital conversion for carrying out analog-to-digital conversion to the data of detector sampling and conditioning circuit acquisition, and are uploaded to load controller through control device, complete the calibration to detection system by ADC.The present invention can be mounted directly in original circuit system, meet the requirement in deep space exploration to the volume of device, weight.
Description
Technical field
The present invention relates to a kind of caliberating device of deep space probe system and applications, are related to space charged particle detection skill
Art field.
Background technique
Deep space exploration refers to the mankind to the moon and the detected event carried out with remote celestial body or space environment, as mankind's space flight
The important channel of movable important directions and space science and technological innovation, be current and future space industry development priority it
One.
Detector system for deep space exploration includes all types of detector and corresponding read-out electronics.This is
System needs the longtime running on satellite, and the factors such as environment temperature, device aging, may lead the parameter of circuit in operational process
Variation, it is therefore desirable to calibration circuit carries out regular on-orbit calibration to system, to detect electronic system or device non-linearity variation,
So that it is determined that the performance of detector system.
Summary of the invention
In view of the above-mentioned problems, that the object of the present invention is to provide a kind of structures is simple, easy to adjust and with higher integrated
The caliberating device of the deep space probe system of degree and application.
To achieve the above object, the present invention takes following technical scheme:
In a first aspect, the present invention provides a kind of caliberating device applied to deep space probe system, which includes:
Control device controls the control signal of each device working condition and each device of generation for generating control signal,
And data interaction can be carried out with load controller；
DAC generates corresponding width for receiving the control signal and digital code value of the control device, and according to digital code value
The level signal of degree；
Electronic switching circuit, for level signal to be converted to pulse signal under the control of the control device；
Detector sampling and conditioning circuit, under the control of the control device to detection system or the electronic cutting
It closes circuit signal and carries out data acquisition and processing (DAP)；
ADC, for carrying out analog-to-digital conversion to the data of detector sampling and conditioning circuit acquisition, and by analog-to-digital conversion
Data afterwards upload to load controller through the control device, complete the calibration to detection system.
Preferably, the control device includes communication master controller, triggering generation module, DAC control module, certainly punctual mould
Block, electronic switch control module, sampling and conditioning circuit control module, ADC control module and data are packaged transmission module；
The finger that the communication main controller module is used to receive, parses the load controller and issue from punctual module
It enables, starts the triggering generation module, data are packaged transmission module, DAC control module and electronic switch control module；
The triggering generation module is for generating trigger signal；
The DAC control module is used to generate the control signal and digital code value of the DAC, controls the DAC linear
The level signal of output setting stepping during calibration；
The electronic switch control module is used to generate the control signal of the electronic switching circuit, controls the electronic cutting
Powered-down road quickly disconnects and is closed during linear calibration；
The sampling and conditioning circuit control module are used to generate the control signal of the detector sampling and conditioning circuit,
The detector sampling and conditioning circuit start one acquisition process after receiving control signal；
The ADC control module is used to generate the ADC control signal and receive the data of ADC output；
The data are packaged the nominal data that transmission module is used to acquire and carry out online processing, are packaged caching, wait institute
After stating the data transfer instruction that communication master controller receives load controller, the data of reference format should be packaged described in being uploaded to
Load controller；
It is described from punctual module for judging whether to reach preset time, if reach preset time transmit a signal to it is described
Communication main controller controls electronic system enters calibration mode.
Preferably, the communication main controller controls electronic system enters there are two types of the modes of calibration mode:
Manual intervention mode: under the operation of controllers, calibrating parameters are configured, and send instructions to the communication master control
Device processed makes electronic system enter calibration mode；
Automatic Calibration mode: detector system is made from punctual module every setting time sending enabled instruction by described
The communication main controller controls electronic system is automatically into calibration mode.
Preferably, the communication main controller controls electronic system, which demarcate, is divided into two stages:
1) baseline calibration mode: the electronic switching circuit is under electronic switch control module control in disconnection shape
State, the detector sampling and the baseline noise output of conditioning circuit acquisition detector, after being sent into the ADC progress analog-to-digital conversion
Transmission module, which is packaged, via the data is uploaded to load controller, the data as baseline calibration part；
2) linear calibration's mode: the DAC generates the level letter of stepping at equal intervals under DAC control module control
Number, the electronic switching circuit is opened under electronic switch control module control and closure, the level that the DAC is exported
Signal is converted to the pulse signal of exponential damping, is sent into the input terminal of the detector sampling and conditioning circuit, analog prober
Output signal, electronic system is demarcated.
Preferably, the control device uses FPGA.
Second aspect, the present invention also provides the application based on the caliberating device, detailed processes are as follows:
S1: under normal observation mode, timing code is judged from punctual module:
S2: calibrating parameters are determined；
S3: start to demarcate into baseline calibration mode；
S4: under the control from trigger signal that triggering generation module generates, detector sampling and conditioning circuit will be to spies
The signal of examining system output is acquired and handles, and sends ADC for collected signal peak and carry out analog-to-digital conversion；
S5:ADC control module is acquired the ADC signal exported, obtains nominal data and is cached；
S6: repeating step S3 to step S5, until collected data packet number reaches preset value, end baseline calibration mold
Formula, automatically into linear calibration's mode, during this period, if load controller assigns data requesting instructions, by current cache number
Ground is returned to according to by load controller；
S7: according to the parameter of setting, the certain amount of trigger signal of generation module generation is triggered and controls DAC continuously exporting
Level signal；
The level signal of S8:DAC output is sent to electronic switching circuit, and electronic switching circuit is in communication main controller controls
Lower carry out closure or openness believe the exponential decay pulse that the level signal of the fixed amplitude of DAC output is converted into equal amplitude
Number；
S9: electronic switching circuit sends detector as analog input signal for the exponential decay pulse signal of generation and adopts
Sample and conditioning circuit；
S10: detector sampling and conditioning circuit are acquired and handle to the demarcation signal generated by electronic switch；
S11: under the control of communication master controller, detector sampling and conditioning circuit send the peak signal of output to
ADC is digitized；
S12: communication master controller is acquired the ADC signal exported, obtains nominal data, waits load control after caching
Then data are returned to ground by load controller by the data requesting instructions of device processed；
S13: repeating step S7 to step S12, until collected data packet number reaches preset value, communication master controller
The level value for controlling DAC output increases a step value；
S14: step S13 is repeated, until the output valve of DAC reaches the stop value being arranged in calibrating parameters, to stop value
After level acquires, calibration system is switched to normal observation mode from calibration mode automatically, and calibration terminates.
Preferably, detailed process timing code judged from punctual module are as follows:
If reaching preset time, communication master controller is transmitted a signal to if punctual module certainly, communication master controller is automatic
Into baseline noise calibration mode, calibrating parameters select default configuration；
If the time does not reach preset time, controllers according to circumstances judge whether to be demarcated and demarcated
Whether using default calibrating parameters, the calibration of master controller is communicated by manual intervention.
Preferably, the detailed process of calibrating parameters is determined are as follows: judge whether calibrating parameters use default parameters, if not using
Default parameters then sends instructions to communication master controller by load controller, and calibrating parameters are arranged, and calibrating parameters include calibration
The normal data packet number acquired under starting point, terminal, step value, each calibration level.
The invention adopts the above technical scheme, which has the following advantages:
1, caliberating device of the invention has very high integrated level, can be mounted directly in original circuit system, meets deep
To the requirement of the volume, weight of device in sky detection；
2, since in deep space exploration, transmission bandwidth resource is extremely limited, calibration instruction can not be periodically sent according to demand, because
This caliberating device of the present invention has regular self-starting function, after reaching predetermined time, certainly in the case where not needing human intervention
It is dynamic to complete all calibration process, and passed back data using limited bandwidth resource；
3, the signal that caliberating device of the invention generates has a flexible adjustable output area, complicated combined of analog
The output characteristic of detector system；
To sum up, the present invention can be widely applied in the calibration of deep space instrumentation system (DSIS).
Detailed description of the invention
Fig. 1 is the schematic illustration of control device of the present invention；
Fig. 2 is the signal schematic representation that DAC of the present invention and electronic switching circuit export；
Fig. 3 is the flow diagram that the present invention demarcates.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill people
Member's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Embodiment 1:
The caliberating device of deep space probe system provided in this embodiment, including control device, DAC (Digital to
Analog converter, digital analog converter), electronic switching circuit, detector sampling and conditioning circuit and ADC
(Analog-to-Digital Converter, analog-digital converter).
Control device can use FPGA (Field-Programmable Gate Array, field-programmable gate array
Column), the periphery FPGA connects DAC, electronic switching circuit, detector sampling and conditioning circuit and ADC, generates each peripheral device respectively
The control signal of part controls each device working condition；In addition, FPGA can carry out packing caching to collected data, wait
After the data sending request of load controller arrives, sends data packets to ground and carry out off-line analysis processing.
DAC is used to receive the control signal and digital code value of FPGA transmission, and generates respective amplitude according to digital code value
Level signal.
Electronic switching circuit is used to that level signal to be converted to pulse signal under FPGA control, conduct during the calibration process
The input signal of detector sampling and conditioning circuit.
Detector sampling and conditioning circuit are used under the control of FPGA to the number of detector system and electronic switching circuit
According to being acquired and handle.
ADC is used to carry out analog-to-digital conversion to the signal of detector sampling and conditioning circuit acquisition, and the data after conversion are final
It is uploaded by FPGA, completes the calibration to detection system.
Preferably, as shown in Figure 1 and Figure 2, control device includes communication master controller, triggering generation module, DAC control mould
Block is packaged biography from punctual module, electronic switch control module, sampling and conditioning circuit control module, ADC control module and data
Defeated module；
Triggering generation module is for generating trigger signal, as the marking signal of calibration process, a trigger signal starting
One acquisition process；
The instruction that communication main controller module is used to receive, parses load controller and issue from punctual module, starting touching
It sends out generation module and data is packaged transmission module.
DAC control module is used to generate the control signal and digital code value of external DAC, controls DAC during linear calibration
The level signal of output setting stepping.
Electronic switch control module is used to generate the control signal of external electrical switching circuit, and control electronic switching circuit exists
It quickly disconnects and is closed during linear calibration, the DAC level signal exported is converted into pulse signal.
Sampling and conditioning circuit control module are used to generate the control signal of outer locator sampling and conditioning circuit, start
One acquisition process.
ADC control module is used for the data for generating external ADC control signal and receiving ADC output, and data are sent into number
According to packing transmission module.
Data are packaged transmission module and are used to collected nominal data carrying out online processing, are packaged caching, wait to be communicated
After master controller receives the data transfer instruction of load controller, the data of reference format should be packaged and be uploaded to load control
Device.
Since punctual module after the power-up timing, reach preset time for judging whether, if reaching preset time
Then transmitting a signal to communication master controller makes electronic system enter calibration mode.
Preferably, communication main controller controls electronic system enters there are two types of the modes of calibration mode:
Manual intervention mode: under the operation of controllers, calibrating parameters are configured, and send instructions to the communication master control
Device processed makes electronic system enter calibration mode；
Automatic Calibration mode: detector system is made from punctual module every setting time sending enabled instruction by described
The communication main controller controls electronic system is automatically into calibration mode.
Preferably, communication main controller controls electronic system, which demarcate, is divided into two stages:
Baseline calibration mode: electronic switching circuit is in an off state under the control of electronic switch control module, detection
Device sampling and the baseline noise output of conditioning circuit acquisition detector, are sent into after ADC carries out analog-to-digital conversion and are uploaded to by FPGA
Load controller, the data as baseline calibration part.
Linear calibration's mode: DAC generates the level signal of stepping at equal intervals, electronic cutting under the control of DAC control module
Powered-down road is quickly opened and is closed under the control of electronic switch control module, and the DAC level signal exported is converted to index
The pulse signal of decaying is sent into the input terminal of detector sampling and conditioning circuit, the output signal of analog prober, to electronics
System is demarcated.
Preferably, electronic switching circuit is made of high speed electronic switch and corresponding peripheral leadage circuit, and electronic cutting is powered-down
Road is quickly opened and closed under the control of electronic switch control module, and the input of electronic switching circuit is DAC output
Level signal, switch when closure, draw high to input terminal level, is then turned off by the level signal that output end can be entered end
Switch, the leadage circuit of output end can drag down rapidly output end voltage, generate an impulse waveform, the output letter of analog prober
Number.
Embodiment 2:
As shown in figure 3, being based on above-mentioned caliberating device, the concrete application of caliberating device is described in detail in the present embodiment:
S1: under normal observation mode, timing code is judged from punctual module:
If reaching preset time (typical case of the present embodiment is 30 days), communication master controller is transmitted a signal to,
Master controller is communicated automatically into baseline noise calibration mode, calibrating parameters select default configuration；
If the time does not reach preset time, according to circumstances judged whether to be demarcated and marked by controllers
It is fixed whether to use default calibrating parameters, pass through the calibration that manual intervention communicates master controller.
S2: judge whether that (default parameters is set as initial value 0V, stop value 2V, stepping in this implementation using default parameters
Value 100mv, each calibration level want the time of ten standard data packets of continuous collecting to lead to if not using default parameters
It crosses load controller and sends instructions to communication master controller, adopted under setting calibration starting point, terminal, step value, each calibration level
The data packet number of collection.
S3: start to demarcate into baseline calibration mode
According to the parameter of setting, triggers generation module and generate trigger signal, starting one acquisition circulation, cycle-index is equal to
The triggering number that generation module generates is triggered, one cycle acquires 23 times in practical application, and the data volume of generation can form one
The reply data packet of reference format.Baseline calibration recycles as carrying out 10 times altogether, obtains the reply data of ten reference formats
Packet, guarantee have enough data volumes to analyze for subsequent data.During baseline noise is demarcated, communicate outside main controller controls
Electronic switching circuit is in an off state, it is made not generate output signal, and guaranteeing that detector over-sampling modulate circuit is collected is
The baseline noise of detector exports, and starts a data acquisition, and triggering generation module generates the trigger signal of setting quantity
The baseline noise of the sampling of control detector and conditioning circuit acquisition detection system is exported and is handled the signal of acquisition；
S4: under the control from trigger signal that triggering generation module generates, detector sampling and conditioning circuit will be exported
Peak signal be sent to ADC carry out analog-to-digital conversion.
S5:ADC control module is acquired the ADC signal exported, obtains nominal data and is cached.
S6: repeating step S3 to step S5, until collected data packet number reaches preset value, end baseline calibration mold
Formula, automatically into linear calibration's mode, during this period, if load controller assigns data requesting instructions, by current cache number
Ground is returned to according to by load controller.
S7: according to the parameter of setting, trigger generation module generate it is certain amount of from trigger signal and to control DAC continuously defeated
Particular level signal out.
The level signal of S8:DAC output is sent to electronic switching circuit, and electronic switching circuit is in communication main controller controls
Lower carry out closure or openness believe the exponential decay pulse that the level signal of the fixed amplitude of DAC output is converted into equal amplitude
Number.
S9: electronic switching circuit sends detector as analog input signal for the exponential decay pulse signal of generation and adopts
Sample and conditioning circuit.
S10: detector sampling and conditioning circuit carry out shaping, filtering, charge conversion, peak to the signal that detection system exports
The processing such as holding.
S11: under the control of communication master controller, detector sampling and conditioning circuit send the peak signal of output to
ADC is digitized.
S12: communication master controller is acquired the ADC signal exported, obtains nominal data, waits load control after caching
Then data are returned to ground by load controller by the data requesting instructions of device processed.
In practical applications, linear calibration's stage, each level value of DAC output can carry out ten circulations, follow every time
Ring acquires 23 times, and final each level value obtains the data answering packet of ten reference formats for subsequent off-line analysis.Ten times
After circulation terminates, the level that control device can control DAC output increases a step value to next level value, starts next
Ten circulations of amplitude.Minimum value, that is, initial value of DAC output, increased value is step value every time, and the value being finally reached is i.e. eventually
Only it is worth, three values are disposed as multi-gear adjustable when calibrating parameters configure, and increase calibration flexibility.
S13: repeating step S7 to step S12, until collected data packet number reaches preset value, communication master controller
The level value for controlling DAC output increases a step value.
S14: step S13 is repeated, until the output valve of DAC reaches the stop value being arranged in calibrating parameters, to stop value
After level acquires, caliberating device is switched to normal observation mode from calibration mode automatically, and calibration terminates.
During this period, if load controller assigns data requesting instructions, current cache data are passed through into load controller
Be returned to ground system, ground system carries out off-line analysis to collected data, obtain detector current basic line noise level,
Linear properties.
Finally it should be noted that: the above examples are only used to illustrate the technical scheme of the present invention rather than to its protection scope
Limitation, although the application is described in detail referring to above-described embodiment, those of ordinary skill in the art should
Understand: those skilled in the art read the specific embodiment of application can still be carried out after the application various changes, modification or
Person's equivalent replacement, but these changes, modification or equivalent replacement, are applying within pending claims.
Claims (8)
1. a kind of caliberating device of deep space probe system, which is characterized in that the caliberating device includes:
Control device controls the control signal of each device working condition and each device of generation, and energy for generating control signal
Enough and load controller carries out data interaction；
DAC for receiving the control signal and digital code value of the control device, and generates corresponding amplitude according to digital code value
Level signal；
Electronic switching circuit, for level signal to be converted to pulse signal under the control of the control device；
Detector sampling and conditioning circuit, for powered-down to detection system or the electronic cutting under the control of the control device
Road signal carries out data acquisition and processing (DAP)；
ADC, for carrying out analog-to-digital conversion to the data of detector sampling and conditioning circuit acquisition, and will be after analog-to-digital conversion
Data upload to load controller through the control device, complete the calibration to detection system.
2. caliberating device according to claim 1, which is characterized in that the control device includes communication master controller, touching
Send out generation module, DAC control module, certainly punctual module, electronic switch control module, sampling and conditioning circuit control module, ADC
Control module and data are packaged transmission module；
The instruction that the communication main controller module is used to receive, parses the load controller and issue from punctual module, is opened
Move the triggering generation module, data are packaged transmission module, DAC control module and electronic switch control module；
The triggering generation module is for generating trigger signal；
The DAC control module is used to generate the control signal and digital code value of the DAC, controls the DAC in linear calibration
The level signal of period output setting stepping；
The electronic switch control module is used to generate the control signal of the electronic switching circuit, and it is powered-down to control the electronic cutting
Road quickly disconnects and is closed during linear calibration；
The sampling and conditioning circuit control module are used to generate the control signal of the detector sampling and conditioning circuit, described
Detector sampling and conditioning circuit start one acquisition process after receiving control signal；
The ADC control module is used to generate the ADC control signal and receive the data of ADC output；
The data are packaged the nominal data that transmission module is used to acquire and carry out online processing, are packaged caching, wait described logical
After letter master controller receives the data transfer instruction of load controller, the data of reference format should be packaged and be uploaded to the load
Controller；
It is described to be used to judge whether to reach preset time from punctual module, if reaching preset time transmits a signal to the communication
Main controller controls electronic system enters calibration mode.
3. caliberating device according to claim 1, which is characterized in that the communication main controller controls electronic system into
There are two types of the modes for entering calibration mode:
Manual intervention mode: under the operation of controllers, calibrating parameters are configured, and send instructions to the communication master controller
Electronic system is set to enter calibration mode；
Automatic Calibration mode: detector system is made by the certainly punctual module every setting time sending enabled instruction described
Main controller controls electronic system is communicated automatically into calibration mode.
4. caliberating device according to claim 2 or 3, which is characterized in that communication main controller controls electronics system
System carries out calibration and is divided into two stages:
1) baseline calibration mode: the electronic switching circuit is in an off state under electronic switch control module control,
The detector sampling and the baseline noise output of conditioning circuit acquisition detector, are sent into after the ADC carries out analog-to-digital conversion and pass through
Transmission module, which is packaged, by the data is uploaded to load controller, the data as baseline calibration part；
2) linear calibration's mode: the DAC generates the level signal of stepping at equal intervals, institute under DAC control module control
Electronic switching circuit is stated to open and be closed, the level signal that the DAC is exported under electronic switch control module control
The pulse signal for being converted to exponential damping, is sent into the input terminal of detector sampling and conditioning circuit, analog prober it is defeated
Signal out demarcates electronic system.
5. caliberating device according to claim 2 or 3, which is characterized in that the control device uses FPGA.
6. a kind of application of the caliberating device of deep space probe system, which is characterized in that detailed process are as follows:
S1: under normal observation mode, timing code is judged from punctual module:
S2: calibrating parameters are determined；
S3: start to demarcate into baseline calibration mode；
S4: under the control from trigger signal that triggering generation module generates, detector sampling and conditioning circuit will be to detection
The signal of system output is acquired and handles, and sends ADC for collected signal peak and carry out analog-to-digital conversion；
S5:ADC control module is acquired the ADC signal exported, obtains nominal data and is cached；
S6: repeating step S3 to step S5, until collected data packet number reaches preset value, end baseline calibration mode,
Automatically into linear calibration's mode, during this period, if load controller assigns data requesting instructions, current cache data are led to
It crosses load controller and is returned to ground；
S7: it according to the parameter of setting, triggers generation module and generates certain amount of trigger signal and control the continuous output level of DAC
Signal；
The level signal of S8:DAC output is sent to electronic switching circuit, electronic switching circuit in the case where communicating main controller controls into
The level signal of the fixed amplitude of DAC output is converted into the exponential decay pulse signal of equal amplitude by row closure or openness；
S9: electronic switching circuit using the exponential decay pulse signal of generation as analog input signal be sent to detector sampling and
Conditioning circuit；
S10: detector sampling and conditioning circuit are acquired and handle to the demarcation signal generated by electronic switch；
S11: under the control of communication master controller, the peak signal of output is sent ADC by detector sampling and conditioning circuit
It is digitized；
S12: communication master controller is acquired the ADC signal exported, obtains nominal data, waits load controller after caching
Data requesting instructions, data are then returned to ground by load controller；
S13: repeating step S7 to step S12, until collected data packet number reaches preset value, communication main controller controls
The level value of DAC output increases a step value；
S14: step S13 is repeated, until the output valve of DAC reaches the stop value being arranged in calibrating parameters, to the level of stop value
After acquisition, calibration system is switched to normal observation mode from calibration mode automatically, and calibration terminates.
7. application according to claim 6, which is characterized in that the detailed process judged from punctual module timing code
Are as follows:
If reaching preset time, transmit a signal to communication master controller if from punctual module, communication master controller automatically into
Baseline noise calibration mode, calibrating parameters select default configuration；
If the time does not reach preset time, controllers according to circumstances judge whether to be demarcated and demarcated whether
Using default calibrating parameters, the calibration of master controller is communicated by manual intervention.
8. application according to claim 6, which is characterized in that determine the detailed process of calibrating parameters are as follows: judge calibrating parameters
Whether default parameters is used, if not using default parameters, communication master controller, setting mark are sent instructions to by load controller
Determine parameter, calibrating parameters include demarcating the normal data packet number acquired under starting point, terminal, step value, each calibration level.
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