Miniaturized spaceborne high-energy particle detection device and method based on silicon detector module

Through the integrated design of silicon detector module and signal processing circuit, the existing detectors are solved in large size, high power consumption and noise interference problems, and a high-precision miniaturization detector is realized, especially the measurement of high-energy protons and electrons.

CN115291272BActive Publication Date: 2025-08-26NAT SPACE SCI CENT CAS

Patent Information

Application Number
CN202210885411.8
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2022-07-26
Publication Date
2025-08-26
Estimated Expiration
2042-07-26

AI Technical Summary

Technical Problem

Existing spatial charged particle detectors have problems such as large size, high power consumption, susceptible to external noise interference and difficult to improve detection accuracy, especially due to insufficient performance caused by sensor systems and front-end electronic discrete design and peak-holding circuits.

Method used

The integrated design of the silicon detector module and the front-end preprocessing circuit is adopted to cancel the peak holding circuit, combine fast and slow forming circuits and differential amplifier circuits, and signal processing is performed through the FPGA processor to achieve miniaturization and high-precision measurement of the detector.

Benefits of technology

The detector is miniaturized and low power consumption is achieved, the detection accuracy and linearity of voltage signals are improved, noise interference is reduced, and the energy spectrum and flux of charged particles can be accurately measured.

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Abstract

The present invention relates to a miniaturized spaceborne high-energy particle detection device and method based on a silicon detector module. The detection device comprises a silicon detector module, a trigger circuit, a differential amplifier circuit, an ADC sampling circuit, an FPGA processor, a data storage unit, a data communication interface, a power conversion circuit, and a sensor bias circuit. The silicon detector module comprises a silicon semiconductor detector and a front-end preprocessing circuit arranged on the same printed circuit board. The silicon semiconductor detector converts received space charged particles into charge signals reflecting particle deposition energy, and the front-end preprocessing circuit converts the charge signals into fast and slow forming pulse signals. The trigger converts the fast forming pulse signal into a trigger signal. The differential amplifier converts the slow forming pulse signal into a differential signal. The ADC collector converts the differential signal output by the differential amplifier into a digital signal. The FPGA processor processes the digital signal output by the ADC collector and converts it into space particle energy spectrum and flux information.
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Description

Technical Field

[0001] The present invention belongs to the technical field of space particle measurement devices, and in particular relates to a miniaturized spaceborne high-energy particle detection device and method based on a silicon detector module. Background Art

[0002] Satellites operate in a complex and harsh space environment. The large number of charged particles in orbit can cause total dose effects and single-event effects on satellites and their onboard equipment. These various particle radiation effects can degrade satellite materials and even lead to failure, resulting in loss of functionality or malfunction of satellite components. They can also cause electronic system errors or freezes, software errors or interruptions, and even component burnout. In severe cases, they can even cause the entire satellite to fail. The characteristics of the satellite orbital radiation environment require the detection of solar high-energy particles, radiation belt protons, electrons, and particle radiation effects. This is to characterize the primary particle radiation environment that poses a serious threat to satellites in that orbit and accurately assess its impact on them.

[0003] Currently, my country's space particle detection technology is in the development and improvement phase, but its detection capabilities still lag behind international standards. Existing charged particle measurement devices typically utilize discrete designs for the sensor system and front-end electronics. Furthermore, after the pulse signal passes through the main amplifier, a peak signal hold circuit is typically required. This not only increases instrument size and power consumption, but also degrades the linearity of the voltage pulse signal after peak hold. Furthermore, the discrete design of the semiconductor sensor and front-end electronics makes them susceptible to external noise interference, making it difficult to reduce the lower detection energy limit.

[0004] The problems with existing technologies are as follows: On the one hand, current space charged particle detectors all use a separate design for the semiconductor sensor system and front-end readout electronics, rather than a silicon detector module with an integrated detector and front-end electronics design. Specifically, the space charged particle measurement devices currently installed on domestic satellites all use a separate design for the sensor system and front-end electronics. This results in large size, weight, high power consumption, and a significant occupation of satellite resources. Furthermore, this discrete structure causes the weak sensor output signal to be susceptible to interference from external noise, making it difficult to improve detection accuracy. On the other hand, since most current particle detection devices use a peak holder to maintain the peak value of the voltage signal output by the main amplifier, the characteristics of this circuit determine that after the peak value of the voltage pulse signal output by the main amplifier is maintained, the output line signal quality is poor, making it difficult to improve detection performance indicators. Furthermore, the presence of a peak hold circuit increases the size and power consumption of the instrument. Summary of the Invention

[0005] To address the aforementioned shortcomings of the existing technology, the present invention proposes a miniaturized spaceborne high-energy particle detector, specifically a high-energy particle detector based on a silicon detector module and eliminating a peak-hold circuit. The detector provided by the present invention eliminates the traditional peak-hold circuit design, overcoming the drawback of the peak-hold circuit that often prevents improved detection performance. The detector provided by the present invention utilizes a silicon detector module, overcoming the issue of weak sensor output signals being susceptible to external noise interference and difficulty improving detection accuracy, which is caused by the discrete design of the sensor system and front-end electronics in current space particle measurement devices. It also overcomes the drawbacks of existing detection instruments, such as high power consumption and large size.

[0006] The present invention proposes a miniaturized spaceborne high-energy particle detection device based on a silicon detector module. The detection device includes one or more silicon detector modules, each of which includes a silicon semiconductor detector and a front-end preprocessing circuit. The silicon semiconductor detector and the front-end preprocessing circuit are integrated and arranged on the same printed circuit board.

[0007] The silicon semiconductor detector is used to convert the received space charged particles into a charge signal reflecting the energy deposited by the particles;

[0008] The front-end preprocessing circuit is used to convert the charge signal output by the silicon semiconductor detector into a fast-forming pulse signal and a slow-forming pulse signal.

[0009] As one of the improvements of the above technical solution, the detection device further includes: a signal processing circuit, an FPGA processor and a storage unit;

[0010] The signal processing circuit is connected to the silicon detector modules in a one-to-one correspondence;

[0011] The signal processing circuit includes: a trigger, a differential amplifier and an ADC collector;

[0012] The FPGA processor includes: a data receiving module, a data processing module and a data sending module;

[0013] The trigger is used to receive the fast-forming pulse signal converted by the front-end preprocessing circuit, convert the fast-forming pulse signal into a trigger signal according to a set trigger threshold, and transmit it to the data receiving module;

[0014] The data receiving module is used to receive the trigger signal output by the trigger and send it to the ADC collector to start the ADC collector;

[0015] The differential amplifier is used to receive the slow-shaped pulse signal converted by the front-end pre-processing circuit, differentially amplify the slow-shaped pulse signal, and transmit it to the ADC collector;

[0016] The ADC collector is used to perform analog-to-digital conversion on the voltage signal after differential amplification to form a digital sampling signal and transmit it to the data processing module;

[0017] The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the charged particles in space, and transmits the obtained energy spectrum and flux to the data sending module;

[0018] The data sending module forms a data packet based on the obtained energy spectrum and flux of the spatial charged particles and sends the data packet to the memory unit.

[0019] As one of the improvements of the above technical solution, the detection device further includes: a power conversion circuit and a bias circuit;

[0020] The power conversion circuit is used to convert the primary power provided by the satellite platform into the secondary power required for the normal operation of the detection device;

[0021] The bias circuit is used to convert the secondary power supply into the high-voltage power supply required for the normal operation of the silicon semiconductor detector.

[0022] As one of the improvements of the above technical solution, the detection device further includes: a shielding structure;

[0023] The silicon detector module is fastened and installed in the corresponding shielding structure by screws to reduce external noise interference.

[0024] As one of the improvements of the above technical solution, the thickness of the silicon semiconductor detector is 100 μm, 300 μm, 500 μm or 1 mm.

[0025] As one of the improvements of the above technical solution, the multiple silicon detector modules are stacked in sequence and fixedly connected.

[0026] As one of the improvements to the above technical solution, after the multiple silicon detector modules are stacked and fixedly connected in sequence, a nanometer or micrometer-scale light-blocking layer is set in front of the silicon semiconductor detector of the first outward-facing silicon detector module to prevent visible light from entering.

[0027] The present invention also proposes a miniaturized spaceborne space particle detection method based on a silicon detector module, which is implemented based on one of the above-mentioned detection devices. The method includes the following steps:

[0028] The silicon semiconductor detector converts the space charged particles entering it into charge signals reflecting the energy deposited by the particles and transmits them to the front-end pre-processing circuit;

[0029] The front-end preprocessing circuit converts the charge signal into a fast-shaped pulse signal and a slow-shaped pulse signal, and transmits them to the trigger and the ADC collector respectively;

[0030] The trigger converts the fast forming pulse signal into a trigger signal and transmits it to the data receiving module of the FPGA processor;

[0031] The data receiving module sends the received trigger signal to the ADC collector to start the ADC collector;

[0032] The differential amplifier differentially amplifies the slow-shaped pulse signal and transmits it to the ADC collector;

[0033] The ADC collector performs analog-to-digital conversion on the voltage signal after differential amplification to form a digital sampling signal, and inputs it to the data processing module of the FPGA processor;

[0034] The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the space charged particles and transmits them to the data sending module;

[0035] The data sending module forms a data packet based on the obtained energy spectrum and flux of the space charged particles and sends it to the memory unit.

[0036] As one of the improvements to the above technical solution, the method connects the detection device to the satellite platform by setting a communication interface and transmits the data packet stored in the memory unit to the satellite platform. The method specifically includes the following steps:

[0037] Step 1) determining whether the trigger receives the fast forming pulse signal; if so, the trigger generates a trigger signal, which is sent to the ADC collector by the data receiving module of the FPGA processor to start the ADC processor and proceed to step 2; otherwise, re-determine;

[0038] Step 2) The ADC collector is started to perform analog-to-digital conversion on the collected slow-shaped pulse signal after passing through the differential amplifier to form a digital sampling signal and input it to the data processing module of the FPGA processor;

[0039] Step 3) The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain energy spectrum and flux information of the charged particles in space;

[0040] Step 4) The FPGA processor processes the energy spectrum and flux information of the space charged particles to form a data packet;

[0041] Step 5) determining whether the satellite platform has sent a data request;

[0042] If the satellite platform sends a data request, it will continue to determine whether the data packet is formed; if the data packet is not formed, it will wait for the data packet to be formed; if the data packet is formed, the data sending module of the FPGA processor will send the data packet to the memory unit; after the sending is completed, the memory unit will be formatted;

[0043] If the satellite platform does not send a data request, re-determine whether a data request has been sent;

[0044] Step 6) The data sending module controls the memory unit to transmit the data packet to the satellite platform through the communication interface.

[0045] As one of the improvements to the above technical solution, the data processing module of the FPGA processor performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux information of the charged particles in space. The specific steps include:

[0046] Based on the received digital sampling signal, an amplitude value of the spatial charged particles output by each corresponding silicon detector module is obtained;

[0047] According to theoretical calculations, different threshold voltages of each corresponding space charged particle are obtained; and the amplitude values ​​of each corresponding space charged particle are compared using an amplitude comparison method;

[0048] Based on the comparison results and in combination with the known thickness of each silicon detector, the energy spectrum and flux information of the corresponding spatial charged particles are obtained. Compared with the prior art, the present invention has the following advantages:

[0049] The detection device of the present invention adopts a silicon detector module with an integrated design of a silicon detector and front-end readout electronics, which avoids interference from external noise when the sensor outputs weak signals and improves detection accuracy. At the same time, it can not only measure the energy spectrum and flux of charged particles, especially high-energy protons and electrons in space, but also achieve low power consumption and miniaturization of the detection instrument. And while achieving the above-mentioned measurements, by eliminating the peak holding circuit and adopting a differential amplifier circuit and ADC direct sampling, it overcomes the shortcomings of the traditional peak circuit and improves the consistency of the voltage signal input / output linearity.

[0050] Specifically, compared with existing particle detection devices of the same type, the miniaturized high-energy particle detection device based on silicon detector modules implemented using this technology has a weight reduction of at least 1kg from the original approximately 3kg, and a power consumption reduction of at least 2W from the original approximately 8W.

[0051] The present invention eliminates the peak hold circuit and solves the problem of design modification by designing fast and slow shaping circuit functions. Specifically, the original solution uses slow shaping triggering to start the ADC to collect the peak signal output by the peak hold circuit, while the current solution uses fast shaping triggering to start the ADC to collect the peak signal output by the slow shaping. Since the time difference between the fast and slow shaping output signals is fixed, the slow shaping peak can be directly collected without the need for peak holding. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Figure 1 This is a circuit connection block diagram of a miniaturized satellite-borne high-energy particle detection device provided by an embodiment of the present invention;

[0053] Figure 2 This is a flow chart of an energy particle detection method for a miniaturized satellite-borne high-energy particle detection device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0054] The working principle of the space particle detector based on the silicon detector module of the present invention is as follows:

[0055] When high-energy charged particles in space are incident on each silicon semiconductor detector, different energy losses will be generated in the corresponding silicon semiconductor detector. The output of each silicon semiconductor detector reflects the charge signal of the energy relationship of the incident particles, that is, the charge signal output by each silicon semiconductor detector is amplified and converted by the front-end preprocessing circuit corresponding to the semiconductor detector to obtain fast and slow forming voltage pulse signals. The fast and forming voltage pulse signals are directly input to the trigger and form a trigger signal sent to the FPGA processor to start the ADC collector; the ADC collector performs signal sampling and analog-to-digital conversion based on the slow forming voltage pulse signal, and the converted digital signal is input to the FPGA processor for amplitude analysis and data processing to obtain the amplitude of the spatial charged particles. Different amplitudes represent charged particles of different energies. According to the obtained amplitude of the spatial charged particles, combined with the known thickness of the silicon semiconductor detector, the energy spectrum and flux information of the spatial charged particles can be obtained.

[0056] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0057] Example 1

[0058] like Figure 1As shown, it is a circuit connection block diagram of a miniaturized satellite-borne high-energy particle detection device based on a silicon detector module, i.e., a miniaturized satellite-borne high-energy particle detection device, provided in Example 1 of the present invention. In this embodiment, three silicon detector modules and corresponding signal processing circuits are provided, but the silicon detector modules and corresponding signal processing circuits of the present invention are not limited to three. The miniaturized satellite-borne high-energy particle detector includes a memory unit, a communication interface, a conversion power supply, and a bias circuit. The miniaturized satellite-borne high-energy particle detector also includes: a silicon detector module, a differential amplifier, an ADC collector, and an FPGA processor.

[0059] The silicon detector module includes: a silicon semiconductor detector and a front-end pre-processing circuit mounted on the same printed circuit board; the silicon detector module is fastened by screws in a corresponding shielding structure to reduce external noise interference; wherein,

[0060] The silicon semiconductor detector has a thickness of 100 μm to 1 mm and is used to convert space charged particles entering the semiconductor detector into charge signals reflecting the energy deposited by the particles and transmit them to the front-end pre-processing circuit;

[0061] The front-end preprocessing circuit is used to convert the charge signal into fast and slow shaped pulse signals and transmit them to the trigger and the ADC collector.

[0062] The trigger is used to convert the fast forming pulse signal into a trigger signal and transmit it to the FPGA processor;

[0063] The differential amplifier is used to differentially amplify the slow-shaped pulse signal and transmit it to the ADC collector;

[0064] The ADC collector is used to perform analog-to-digital conversion on the voltage signal after differential amplification to form a digital sampling signal and input it to the FPGA processor;

[0065] The FPGA processor includes: a first data receiving module, a second data receiving module and a data sending module; wherein,

[0066] The first data receiving module receives a trigger signal output by the trigger and sends the received signal to the ADC processor to start the ADC processor;

[0067] The second data receiving module performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the spatial charged particles. The specific steps include:

[0068] Based on the received digital sampling signal, the amplitude value of each corresponding spatial charged particle output by the silicon detector module is obtained; according to theoretical calculation, the different threshold voltages of each corresponding spatial charged particle are obtained; using the amplitude comparison method, the amplitude value of each corresponding spatial charged particle is compared; based on the comparison result and combined with the known thickness of the semiconductor detector of the silicon detector module, the energy spectrum and flux information of the corresponding spatial charged particle are obtained.

[0069] The data sending module forms a data packet based on the obtained energy spectrum and flux of the spatial charged particles and sends the data packet to the memory unit.

[0070] The detector also includes a communication interface; the FPGA processor controls the memory unit to communicate the stored energy spectrum and flux information of the space charged particles with the satellite platform through the communication interface and transmit the information to the satellite platform.

[0071] The detector further includes a power conversion circuit for converting the primary power provided by the satellite platform into a secondary power required for normal operation of the detector.

[0072] The detector further includes a bias circuit for converting the secondary power supply into a high voltage power supply required for normal operation of the silicon semiconductor detector.

[0073] The silicon detector module also includes a silicon semiconductor detector and a front-end pre-processing circuit; wherein,

[0074] The silicon semiconductor detector has a thickness of 100 μm to 1 mm and is used to convert space charged particles entering the semiconductor detector into charge signals reflecting particle deposition energy and transmit the charge signals to the front-end preprocessing circuit.

[0075] The front-end preprocessing circuit is used to convert the charge signal into fast and slow shaped pulse signals and transmit them to the trigger and the ADC collector.

[0076] The silicon semiconductor detector and the fast and slow shaping outputs of the silicon detector module are mounted on the same printed circuit board; the silicon detector module is fastened by screws in a corresponding shielding structure to reduce external noise interference.

[0077] The detector uses at least one group of silicon detector modules; wherein, the at least one group of silicon detector modules are stacked in sequence and fixedly connected.

[0078] Example 2

[0079] like Figure 2 FIG. 1 is a flow chart of a particle energy detection method for a miniaturized satellite-borne high-energy particle detection device provided in Example 2 of the present invention.

[0080] After starting the space particle detector based on the silicon detector module, first determine whether there is a reset signal; if so, execute the subsequent steps, otherwise restart;

[0081] When it is determined that there is a reset signal, continue to determine whether the data packet has been sent. If it has been sent, execute the subsequent steps; otherwise, re-determine.

[0082] When it is determined that the data packet has been sent, the memory space is cleared at a timer of 1 second;

[0083] After the memory space is cleared, determine whether there is a trigger signal. If yes, then the subsequent execution will stop. If not, then continue to determine.

[0084] When a trigger signal is detected, the ADC converter is started, the ADC conversion result is compared with the threshold, and the result is cached;

[0085] Determine whether the time interval since the last packet was sent is 1 second. If so, proceed to the next step. If not, repeat the determination.

[0086] When it is determined that the time interval from the last data packet transmission is 1 second, the working parameters (including: packet header, time code, packet count) are collected and written into the memory;

[0087] Determine if there is a data request. If so, send the data packet to the storage area. If not, re-determine.

[0088] Re-judge whether the data packet has been sent and repeat the above steps.

[0089] The space particle detector based on the silicon detector module also has the functions of time calibration and instruction analysis. Specifically, it is determined whether the space particle detector based on the silicon detector module has received the time calibration command sent by the satellite platform. If so, it is re-determined after performing time calibration, otherwise it is re-determined; it is determined whether there is an instruction from the satellite platform injected into the space particle detector based on the silicon detector module. If so, it is re-determined after performing instruction analysis, otherwise it is directly re-determined;

[0090] The working steps of the FPGA processor of the detector include: step 1) determining whether the trigger receives the fast forming voltage pulse signal; if so, the trigger generates a trigger signal, which is sent to the ADC processor by the first data receiving module of the FPGA processor to start the ADC processor and proceed to step 2; otherwise, re-determine;

[0091] Step 2) the ADC processor is started to perform analog-to-digital conversion on the slowly formed voltage signal collected after passing through the differential amplifier, and forms a digital sampling signal which is input to the FPGA processor;

[0092] Step 3) The second data module of the FPGA processor performs amplitude analysis and data processing based on the received digital sampling signal to obtain energy spectrum and flux information of the spatial charged particles;

[0093] Step 4) determining whether the current time is the scheduled acquisition time; if so, the FPGA processor processes the energy spectrum and flux information of the space charged particles into a data packet and proceeds to step 5; otherwise, re-determine;

[0094] Step 5) determining whether the satellite platform has sent a data request; if so, and there is currently a completed data packet, the data sending module of the FPGA processor sends the data packet to the memory unit; if the data packet has not yet been formed, waiting for the data packet to be formed before sending it, and after the sending is completed, formatting the memory unit; otherwise, re-determining whether there is a data request;

[0095] Step 6) The data sending module of the FPGA processor controls the memory unit to transmit the data packet to the satellite platform through the communication interface.

[0096] After step 6) is completed, the storage space clearing function of the memory unit is started at a timer of 1 second, and the process returns to step 1.

[0097] The second data receiving module of the FPGA processor performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the spatial charged particles. The specific steps include:

[0098] Based on the received digital sampling signal, the amplitude value of each corresponding spatial charged particle output by the silicon detector module is obtained; according to theoretical calculation, the different threshold voltages of each corresponding spatial charged particle are obtained; using the amplitude comparison method, the amplitude value of each corresponding spatial charged particle is compared; based on the comparison result and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding spatial charged particle are obtained.

[0099] From the above specific description of the present invention, it can be seen that the detection device of the present invention adopts a silicon detector module, which can not only measure the energy spectrum and flux of charged particles, especially high-energy protons and electrons in space, but also realize the low power consumption and miniaturization of the detection instrument; and while realizing the above-mentioned measurement, by eliminating the peak holding circuit and adopting the differential amplifier circuit, the shortcomings of the traditional peak circuit are overcome, and the consistency of the voltage signal input / output linearity is improved.

[0100] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions to the technical solutions of the present invention do not depart from the spirit and scope of the technical solutions of the present invention and are intended to be encompassed by the claims of the present invention.

Claims

1. A miniaturized spaceborne high-energy particle detection device based on a silicon detector module, characterized in that: The detection device includes multiple silicon detector modules, signal processing circuits and FPGA processors. Each silicon detector module includes a silicon semiconductor detector and a front-end pre-processing circuit. The silicon semiconductor detector and the front-end pre-processing circuit are integrated and arranged on the same printed circuit board. The silicon semiconductor detector is used to convert the received space charged particles into a charge signal reflecting the energy deposited by the particles; The front-end preprocessing circuit is used to convert the charge signal output by the silicon semiconductor detector into a fast-forming pulse signal and a slow-forming pulse signal; The signal processing circuit includes: a trigger, a differential amplifier and an ADC collector; The FPGA processor includes: a data receiving module, a data processing module and a data sending module; The trigger is used to receive the fast-forming pulse signal converted by the front-end preprocessing circuit, convert the fast-forming pulse signal into a trigger signal according to a set trigger threshold, and transmit it to the data receiving module; The data receiving module is used to receive the trigger signal output by the trigger and send it to the ADC collector when the trigger signal is detected to start the ADC collector; The differential amplifier is used to receive the slow-shaped pulse signal converted by the front-end pre-processing circuit, differentially amplify the slow-shaped pulse signal, and transmit it to the ADC collector; The ADC collector is used to perform analog-to-digital conversion on the voltage signal after differential amplification to form a digital sampling signal and transmit it to the data processing module.

2. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 1, characterized in that: The detection device further includes: a memory unit; There are multiple signal processing circuits, and the multiple signal processing circuits are connected to the multiple silicon detector modules in a one-to-one correspondence; The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the space charged particles and transmits them to the data sending module; The data sending module forms a data packet based on the obtained energy spectrum and flux of the spatial charged particles and sends the data packet to the memory unit.

3. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 1, characterized in that: The detection device further comprises: a power conversion circuit and a bias circuit; The power conversion circuit is used to convert the primary power provided by the satellite platform into the secondary power required for the normal operation of the detection device; The bias circuit is used to convert the secondary power supply into the high-voltage power supply required for the normal operation of the silicon semiconductor detector.

4. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 1, characterized in that: The detection device further includes: a shielding structure; The silicon detector module is fastened and installed in the corresponding shielding structure by screws to reduce external noise interference.

5. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 1, characterized in that: The thickness of the silicon semiconductor detector is 100 μm, 300 μm, 500 μm or 1 mm.

6. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 1, characterized in that: The multiple silicon detector modules are stacked in sequence and fixedly connected.

7. The miniaturized spaceborne high-energy particle detection device based on silicon detector modules according to claim 6, characterized in that: After the multiple silicon detector modules are stacked and fixedly connected in sequence, a light-blocking layer of nanometer or micrometer magnitude is provided in front of the silicon semiconductor detector of the first silicon detector module facing outward to prevent visible light from entering.

8. A miniaturized spaceborne particle detection method based on a silicon detector module, implemented based on the detection device according to any one of claims 2 to 7, the method comprising the following steps: The silicon semiconductor detector converts the space charged particles entering it into charge signals reflecting the energy deposited by the particles and transmits them to the front-end pre-processing circuit; The front-end preprocessing circuit converts the charge signal into a fast-shaped pulse signal and a slow-shaped pulse signal, and transmits them to the trigger and the ADC collector respectively; The trigger converts the fast forming pulse signal into a trigger signal and transmits it to the data receiving module of the FPGA processor; The data receiving module sends the received trigger signal to the ADC collector to start the ADC collector; The differential amplifier differentially amplifies the slow-shaped pulse signal and transmits it to the ADC collector; The ADC collector performs analog-to-digital conversion on the voltage signal after differential amplification to form a digital sampling signal, and inputs it to the data processing module of the FPGA processor; The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux of the space charged particles and transmits them to the data sending module; The data sending module forms a data packet based on the obtained energy spectrum and flux of the space charged particles and sends it to the memory unit.

9. The miniaturized spaceborne particle detection method based on a silicon detector module according to claim 8, wherein the method connects the detection device to the satellite platform by setting a communication interface and transmits the data packets stored in the memory unit to the satellite platform, wherein: The method specifically comprises the following steps: Step 1) determining whether the trigger receives the fast forming pulse signal; if so, the trigger generates a trigger signal, which is sent to the ADC collector by the data receiving module of the FPGA processor to start the ADC processor and proceed to step 2; otherwise, re-determine; Step 2) The ADC collector is started to perform analog-to-digital conversion on the collected slow-shaped pulse signal after passing through the differential amplifier to form a digital sampling signal and input it to the data processing module of the FPGA processor; Step 3) The data processing module performs amplitude analysis and data processing based on the received digital sampling signal to obtain energy spectrum and flux information of the charged particles in space; Step 4) The FPGA processor processes the energy spectrum and flux information of the space charged particles to form a data packet; Step 5) determining whether the satellite platform has sent a data request; If the satellite platform sends a data request, it will continue to determine whether the data packet is formed; if the data packet is not formed, it will wait for the data packet to be formed; if the data packet is formed, the data sending module of the FPGA processor will send the data packet to the memory unit; after the sending is completed, the memory unit will be formatted; If the satellite platform does not send a data request, re-determine whether a data request has been sent; Step 6) The data sending module controls the memory unit to transmit the data packet to the satellite platform through the communication interface.

10. The miniaturized spaceborne particle detection method based on silicon detector modules according to claim 8, characterized in that: The data processing module of the FPGA processor performs amplitude analysis and data processing based on the received digital sampling signal to obtain the energy spectrum and flux information of the charged particles in space. The specific steps include: Based on the received digital sampling signal, an amplitude value of the spatial charged particles output by each corresponding silicon detector module is obtained; According to theoretical calculations, different threshold voltages of each corresponding space charged particle are obtained; and the amplitude values ​​of each corresponding space charged particle are compared using an amplitude comparison method; Based on the comparison result and in combination with the known thickness of each silicon detector, the energy spectrum and flux information of the corresponding spatial charged particles are obtained.

Citation Information

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