A space particle detector based on a silicon detector module and a detection method thereof

By integrating silicon semiconductor detectors and ASIC devices using silicon detector modules, the problems of large size, high power consumption, and susceptibility to noise interference in existing space charged particle detectors are solved, achieving high-precision energy spectrum and flux measurement, and improving voltage signal linearity and signal-to-noise ratio.

CN116125522BActive Publication Date: 2026-04-24NAT SPACE SCI CENT CAS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NAT SPACE SCI CENT CAS
Filing Date
2021-11-12
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Existing space charged particle detectors suffer from problems such as large size, high power consumption, susceptibility to external noise interference, and difficulty in improving detection accuracy, especially due to poor linearity caused by the discrete design of the sensor system and front-end electronics.

Method used

The design employs a silicon detector module, integrating a silicon semiconductor detector and an ASIC device, including a charge preamplifier module, a fast forming circuit, a slow forming circuit, a main amplifier, an ADC acquisition unit, and an FPGA processor. Through the high integration of the differential amplifier circuit and the silicon detector module, noise interference is reduced and the signal-to-noise ratio is improved.

Benefits of technology

It achieves high-precision measurement of the energy spectrum and flux of charged particles in space, especially the measurement of high-energy protons and electrons, improves the input/output linearity of voltage signals, and reduces noise interference, thus meeting the requirements of low noise and high integration for space particle detectors.

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Abstract

The present application relates to a kind of space particle detector based on silicon detector module and its detection method, comprising: silicon detector module, main amplifier, ADC collector and FPGA processor;Wherein, the silicon detector module includes: a piece of silicon semiconductor detector and ASIC device mounted on the same printed board;The ASIC device includes: charge preamplification module, fast shaping circuit and slow shaping circuit.The detection device of the present application adopts silicon detector module, and integrates silicon semiconductor detector and ASIC device, with charge signal amplification, fast / slow voltage pulse signal shaping function;It can also measure the energy spectrum and flux of charged particles;And, through ASIC module and differential amplifier circuit, the consistency of voltage signal input / output linearity is improved;When used for space charged particle measurement, through the high integration and shielding structure design of silicon detector module, the low noise, high integration requirement of space particle detector is reached, and the signal-to-noise ratio is improved.
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Description

Technical Field

[0001] This invention belongs to the field of space particle measurement device technology, specifically relating to a space particle detector based on a silicon detector module and its detection method. Background Technology

[0002] During satellite operation, the space environment is complex and harsh. The large number of charged particles present in orbit can cause total dose effects and single-event effects on the satellite. Increased total dose will degrade the performance of satellite materials until they fail, leading to functional loss or failure of satellite components. Single-event effects can cause electronic system errors or crashes, software errors or interruptions, even component burnout, and in severe cases, can cause the entire satellite to fail. The characteristics of the satellite orbital radiation environment necessitate the detection of high-energy solar particles, protons and electrons in radiation belts, and particle radiation effects to obtain the main particle radiation environment characteristics that pose a serious threat to the satellite in this orbit, in order to accurately assess the impact of radiation on the satellite. Space particle radiation detection generally includes two aspects: particle environment detection and radiation effect detection.

[0003] Currently, my country's space particle detection technology is in the development and improvement stage, and its detection capabilities still lag behind international standards. Existing charged particle measurement devices generally adopt a discrete design for the sensor system and front-end electronics. Furthermore, the pulse signal typically requires a peak signal holding circuit after passing through the main amplifier. This not only results in large instrument size and high power consumption but also leads to poor linearity of the voltage pulse signal after peak holding. In addition, the discrete design of the sensor system and front-end electronics makes it highly susceptible to external noise interference, making it difficult to lower the detection energy limit.

[0004] The existing technology has several problems: current space charged particle detectors all employ a discrete design for the sensor system and front-end electronics. Specifically, on the one hand, the space charged particle measurement devices installed on various domestic satellites are all "three-in-one" products, with the sensor system and front-end electronics designed separately. This results in large size, weight, and high power consumption, consuming significant satellite resources. Furthermore, this discrete structure makes the weak sensor output signal susceptible to external noise interference, hindering the improvement of detection accuracy. On the other hand, because previous detection devices all used peak-hold circuits, the characteristics of this circuit determine that the voltage pulse signal output from the main amplifier, after peak holding, has poor input or output linearity, making it difficult to improve detection performance. Silicon detectors can detect the energy spectrum and flux information of space charged particles in real time on orbit. By detecting the space particle radiation environment, effective and accurate space environment parameters can be obtained, providing data support for satellite on-orbit safety and operational space environment management. However, currently, no space particle detector uses a silicon detector. Summary of the Invention

[0005] To address the aforementioned shortcomings of existing technologies, this invention proposes a space particle detector based on a silicon detector module, specifically relating to a space particle detector based on a silicon detector module and its detection method. The detector provided by this invention eliminates the traditional peak-hold circuit design, overcoming the limitation of existing technologies that employ peak-hold circuits and thus cannot improve detection performance. It also overcomes the problem of weak sensor output signals being easily interfered with by external noise due to the discrete design of current space particle measurement devices' sensor systems and front-end electronics, making it difficult to improve detection accuracy. Furthermore, it overcomes the disadvantages of existing detection instruments, such as high power consumption and large size. This invention designs a space particle detector based on a silicon detector module, including a memory unit, a communication interface, a conversion power supply, and a bias circuit. The space particle detector based on the silicon detector module further includes: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; wherein...

[0006] The silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; wherein,

[0007] The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device;

[0008] The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein...

[0009] The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal;

[0010] The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor;

[0011] The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier;

[0012] The main amplifier is configured as a differential amplifier circuit to differentially amplify the slow-forming voltage pulse signal and transmit it to the ADC acquisition unit.

[0013] The ADC acquisition unit is used to perform analog-to-digital conversion on the differentially amplified slow-shaping voltage pulse signal to form a digital sampling word signal, and then output it to the FPGA processor.

[0014] The FPGA processor includes: a first data receiving module and a second data receiving module; wherein,

[0015] The first data receiving module generates a trigger signal based on the received fast forming voltage pulse signal and sends it to the ADC processor to start the ADC processor;

[0016] 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 charged particles in space, and forms a data packet to send to the memory unit.

[0017] As an improvement to the above-mentioned device, 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 charged particles in space. Specific steps include:

[0018] Based on the received digital sampling signal, the amplitude value of each corresponding space charged particle is obtained by using an amplitude comparison method; different threshold voltages of each corresponding space charged particle are obtained through theoretical calculation and compared; based on the comparison results and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding space charged particle are obtained.

[0019] As an improvement to the above-mentioned device, the detector further includes a communication interface; the FPGA processor controls the memory unit to communicate with the satellite platform and transmit the stored energy spectrum and flux information of the charged particles in space through the communication interface to the satellite platform.

[0020] As an improvement to the above-mentioned device, the detector also includes a power conversion circuit for converting the primary power provided by the satellite platform into the secondary power required for the normal operation of the detector.

[0021] As an improvement to the above-mentioned device, the detector further includes a bias circuit for converting the secondary power supply into the high-voltage power supply required for the normal operation of the silicon semiconductor detector.

[0022] As an improvement to the above-mentioned device, the silicon semiconductor detector includes: an ion implantation detector; the silicon semiconductor detector has a thickness of 300 μm to 1 mm and a sensitive area of ​​Φ8 mm to Φ20 mm.

[0023] As an improvement to the above-mentioned device, the silicon semiconductor detector and the ASIC device of the silicon detector module are mounted on the same printed circuit board; the silicon detector module is fastened in the corresponding shielding structure by screws to reduce external noise interference.

[0024] As an improvement to the above-mentioned device, the detector employs at least three sets of silicon detector modules; wherein the silicon detector modules are stacked sequentially and fixedly connected.

[0025] As an improvement to the above device, a nanoscale light-blocking layer of a certain thickness is provided in front of the silicon semiconductor detector of the first set of external silicon detector modules to prevent visible light from entering.

[0026] The detection method based on the aforementioned space particle detector using a silicon detector module is characterized in that the space particle detector comprises: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; wherein,

[0027] The silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; wherein,

[0028] The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device;

[0029] The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein...

[0030] The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal;

[0031] The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor;

[0032] The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier;

[0033] The FPGA processor of the detector operates as follows:

[0034] Step 1) Determine whether the FPGA processor has received the fast prototyping voltage pulse signal. If so, the first data receiving module of the FPGA processor generates a trigger signal and sends it to the ADC processor to start the ADC processor and proceed to Step 2; otherwise, re-determine.

[0035] Step 2) The ADC processor starts up, performs analog-to-digital conversion on the slow-shaping voltage pulse signal that has been differentially amplified by the main amplifier, and generates a digital sampling signal which is then sent to the FPGA processor.

[0036] 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 the energy spectrum and flux information of the charged particles in space.

[0037] Step 4) Determine if the current time is the scheduled acquisition time; if so, the FPGA processor processes the energy spectrum and flux information of the charged particles in space to form a data packet and proceeds to step 5; otherwise, re-determine.

[0038] Step 5) Determine whether the satellite platform has sent a data request; if so, and there is a completed data packet, the FPGA processor sends the data packet to the memory unit. If the data packet has not yet been formed, wait for it to be formed before sending it. After sending, format the memory unit; otherwise, re-determine whether there is a data request.

[0039] Step 6) The FPGA processor controls the memory unit to transmit the data packet to the satellite platform through the communication interface;

[0040] As an improvement to the above method, 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 information of the charged particles in space. Specific steps include:

[0041] Based on the received digital sampling signal, the amplitude value of each corresponding space charged particle is obtained by using an amplitude comparison method; different threshold voltages of each corresponding space charged particle are obtained through theoretical calculation and compared; based on the comparison results and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding space charged particle are obtained.

[0042] The advantages of this invention compared to the prior art are:

[0043] The detection device of this invention employs a silicon detector module, integrating a silicon semiconductor detector and an ASIC device. It features charge signal amplification and fast / slow voltage pulse signal shaping capabilities. It can also measure the energy spectrum and flux of charged particles, particularly high-energy protons and electrons in space. Furthermore, while achieving these measurements, the ASIC module and differential amplifier circuit overcome the shortcomings of traditional peak-holding circuits, improving the consistency of voltage signal input / output linearity. When used for space charged particle measurements, the high integration and shielding structure design of the silicon detector module achieve the low-noise, high-integration requirements of space particle detectors, thus improving the signal-to-noise ratio. Attached Figure Description

[0044] Figure 1 This is a structural diagram of a space particle detector based on a silicon detector module provided in an embodiment of the present invention;

[0045] Figure 2This is a structural diagram of a silicon detector module for a space particle detector based on a silicon detector module, provided in an embodiment of the present invention.

[0046] Figure 3 This is a circuit connection block diagram of a space particle detector based on a silicon detector module provided in an embodiment of the present invention;

[0047] Figure 4 This is a flowchart of the detection method of a space particle detector based on a silicon detector module according to the present invention.

[0048] Figure label:

[0049] 1. First silicon detector module; 2. Second silicon detector module

[0050] 3. Third silicon detector module; 4. Shielding structure of the first silicon detector module

[0051] 5. Shielding structure of the second silicon detector module; 6. Shielding structure of the third silicon detector module. Detailed Implementation

[0052] The present invention will now be further described with reference to the accompanying drawings.

[0053] The working principle of the space particle detector based on the silicon detector module is as follows:

[0054] When a high-energy charged particle in space is incident on each silicon semiconductor detector, it will produce different energy losses in the corresponding silicon semiconductor detector. The output of each silicon semiconductor detector is a charge signal reflecting the energy relationship of the incident particle. That is, the charge signal output by each silicon semiconductor detector is amplified and converted by the ASIC device connected to the semiconductor detector to obtain fast and slow shaping voltage pulse signals. The fast and slow shaping voltage pulse signals are directly input to the FPGA processor and form a trigger signal sent to the ADC acquisition unit to start the ADC acquisition unit. The ADC acquisition unit performs signal sampling and analog-to-digital conversion based on the shaping voltage pulse signal. The converted digital signal is input to the FPGA processor for amplitude analysis and data processing to obtain the amplitude of the charged particle in space. Different amplitudes represent charged particles with different energies. Based on the obtained amplitude of the charged particle in space, and combined with the known thickness of the silicon semiconductor detector, the energy spectrum and flux information of the charged particle in space can be obtained.

[0055] like Figure 1 and Figure 3 As shown, the space particle detector based on a silicon detector module includes a memory unit, a communication interface, a conversion power supply, and a bias circuit. The space particle detector based on a silicon detector module further includes: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; wherein,

[0056] like Figure 2 As shown, the silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; the silicon detector module is fastened to a corresponding shielding structure by screws to reduce external noise interference; wherein,

[0057] The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device;

[0058] The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein...

[0059] The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal;

[0060] The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor;

[0061] The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier;

[0062] The main amplifier is configured as a differential amplifier circuit to differentially amplify the slow-forming voltage pulse signal and transmit it to the ADC acquisition unit.

[0063] The ADC acquisition unit is used to convert the differentially amplified slow-forming voltage pulse signal into an analog-to-digital signal, form a digital sampling signal, and output it to the FPGA processor.

[0064] The FPGA processor includes: a first data receiving module and a second data receiving module; wherein,

[0065] The first data receiving module generates a trigger signal based on the received fast forming voltage pulse signal and sends it to the ADC processor to start the ADC processor;

[0066] 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 charged particles in space, and forms a data packet to send to the memory unit.

[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 charged particles in space. Specific steps include:

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

[0069] The detector also includes a communication interface; the FPGA processor controls the memory unit to communicate with the satellite platform and transmit the stored energy spectrum and flux information of the charged particles in space through the communication interface to the satellite platform.

[0070] The detector also includes a power conversion circuit for converting the primary power provided by the satellite platform into the secondary power required for the normal operation of the detector.

[0071] The detector also includes a bias circuit for converting the secondary power supply into the high-voltage power supply required for the normal operation of the silicon semiconductor detector.

[0072] The silicon semiconductor detector includes an ion implantation detector; the silicon semiconductor detector has a thickness of 300 μm to 1 mm and a sensitive area Φ of 8 mm to 20 mm. For example... Figure 2-3 In this embodiment, the detector employs three sets of silicon detector modules. These three sets of silicon detector modules are stacked sequentially and fixedly connected; they can be fixed together using screws according to the stacking order. A nanometer-scale light-blocking layer of a certain thickness is provided in front of the silicon semiconductor detector of the first set of externally facing silicon detector modules to prevent visible light from entering.

[0073] like Figure 3-4 The method for detecting space particles based on a silicon detector module is characterized in that the space particle detector comprises: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; wherein,

[0074] The silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; wherein,

[0075] The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device;

[0076] The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein...

[0077] The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal;

[0078] The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor;

[0079] The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier;

[0080] After activating the space particle detector based on the silicon detector module, first determine if there is a reset signal; if there is, proceed with the subsequent steps; otherwise, restart.

[0081] The space particle detector based on the silicon detector module also has time synchronization and command parsing functions. Specifically, it determines whether the space particle detector based on the silicon detector module has received a time synchronization command from the satellite platform. If it has received it, it will re-determine after time synchronization; otherwise, it will re-determine. It also determines whether there is a command from the satellite platform injected into the space particle detector based on the silicon detector module. If there is, it will re-determine after command analysis; otherwise, it will re-determine directly.

[0082] The working steps of the FPGA processor of the detector include: Step 1) Determining whether the FPGA processor has received the fast forming voltage pulse signal. If so, the first data receiving module of the FPGA processor generates a trigger signal and sends it to the ADC processor to start the ADC processor and proceed to Step 2; otherwise, the determination is repeated.

[0083] Step 2) The ADC processor starts up, performs analog-to-digital conversion on the slow-shaping voltage pulse signal acquired after differential amplification by the main amplifier, and generates a digital sampling signal which is then sent to the FPGA processor.

[0084] 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 the energy spectrum and flux information of the charged particles in space.

[0085] Step 4) Determine if the current time is the scheduled acquisition time; if so, the FPGA processor processes the energy spectrum and flux information of the charged particles in space to form a data packet and proceeds to step 5; otherwise, re-determine.

[0086] Step 5) Determine whether the satellite platform has sent a data request; if so, and there is a completed data packet, the FPGA processor sends the data packet to the memory unit. If the data packet has not yet been formed, wait for it to be formed before sending it. After sending, format the memory unit; otherwise, re-determine whether there is a data request.

[0087] Step 6) The FPGA processor controls the memory unit to transmit the data packet to the satellite platform through the communication interface;

[0088] After step 6 is completed, the memory space clearing function of the memory unit is activated after a 1-second timer, and the process returns to step 1.

[0089] 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 charged particles in space. Specific steps include:

[0090] Based on the received digital sampling signal, the amplitude value of each corresponding space charged particle is obtained by using an amplitude comparison method; different threshold voltages of each corresponding space charged particle are obtained through theoretical calculation and compared; based on the comparison results and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding space charged particle are obtained.

[0091] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand 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 all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A space particle detector based on a silicon detector module, comprising: The memory unit, communication interface, power supply, and bias circuit are characterized by further comprising: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; wherein, The silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; wherein, The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device; The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein... The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal; The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor; The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier; The main amplifier is configured as a differential amplifier circuit to differentially amplify the slow-forming voltage pulse signal and transmit it to the ADC acquisition unit. The ADC acquisition unit is used to convert the differentially amplified slow-forming voltage pulse signal into an analog-to-digital signal, form a digital sampling signal, and output it to the FPGA processor. The FPGA processor includes: a first data receiving module and a second data receiving module; wherein, The first data receiving module generates a trigger signal based on the received fast forming voltage pulse signal and sends it to the ADC acquisition unit to start the ADC acquisition unit; 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 charged particles in space, and forms a data packet to send to the memory unit.

2. A space particle detector based on a silicon detector module according to claim 1, characterized in that, 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 charged particles in space. Specific steps include: Based on the received digital sampling signal, the amplitude value of each corresponding space charged particle is obtained by using an amplitude comparison method; different threshold voltages of each corresponding space charged particle are obtained by theoretical calculation and compared; based on the comparison results and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding space charged particle are obtained.

3. A space particle detector based on a silicon detector module according to claim 1, characterized in that, The detector also includes a communication interface; the FPGA processor controls the memory unit to communicate with the satellite platform and transmit the stored energy spectrum and flux information of the charged particles in space through the communication interface to the satellite platform.

4. A space particle detector based on a silicon detector module according to claim 1, characterized in that, The detector also includes a power conversion circuit and a bias circuit; wherein, 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 detector; the bias circuit is used to convert the secondary power into the high-voltage power required for the normal operation of the silicon semiconductor detector.

5. A space particle detector based on a silicon detector module according to claim 1, characterized in that, The silicon semiconductor detector includes an ion implantation detector; the silicon semiconductor detector has a thickness of 300 μm to 1 mm and a sensitive area of ​​Φ8 mm to Φ20 mm.

6. A space particle detector based on a silicon detector module according to claim 1, characterized in that, The silicon semiconductor detector and the ASIC device of the silicon detector module are mounted on the same printed circuit board; the silicon detector module is fastened in the corresponding shielding structure by screws to reduce external noise interference.

7. A space particle detector based on a silicon detector module according to claim 1, characterized in that, The detector employs at least three sets of silicon detector modules; wherein the silicon detector modules are stacked sequentially and fixedly connected.

8. A space particle detector based on a silicon detector module according to claim 7, characterized in that, A micron-level light-blocking layer of a certain thickness is placed in front of the silicon semiconductor detector of the first set of external silicon detector modules to prevent visible light from entering.

9. The detection method of a space particle detector based on a silicon detector module as described in claim 1, characterized in that, The space particle detector includes: a silicon detector module, a main amplifier, an ADC acquisition unit, and an FPGA processor; among which, The silicon detector module includes: a silicon semiconductor detector and an ASIC device mounted on the same printed circuit board; wherein, The silicon semiconductor detector is used to output a charge signal reflecting the energy deposited by charged particles in space, and transmit it to the ASIC device; The ASIC device includes: a charge preamplifier module, a fast forming circuit, and a slow forming circuit; wherein... The charge preamplifier module is used to preamplify the charge signal and convert it into a voltage pulse signal; The fast prototyping circuit is used to convert the voltage pulse signal into a fast prototyping voltage pulse signal and transmit it to the FPGA processor; The slow-shaping circuit is used to convert the voltage pulse signal into a slow-shaping voltage pulse signal and transmit it to the main amplifier; The FPGA processor of the detector operates as follows: Step 1) Determine whether the FPGA processor has received the fast prototyping voltage pulse signal. If so, the first data receiving module of the FPGA processor generates a trigger signal and sends it to the ADC acquisition unit to start the ADC acquisition unit and proceed to Step 2; otherwise, re-determine. Step 2) The ADC acquisition unit is started, and the acquired slow-shaping voltage pulse signal after differential amplification by the main amplifier is converted from analog to digital and a digital sampling signal is sent to the FPGA processor. Step 3) 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 information of the charged particles in space. Step 4) Determine if the current time is the scheduled acquisition time; if so, the FPGA processor processes the energy spectrum and flux information of the charged particles in space to form a data packet and proceeds to step 5; otherwise, re-determine. Step 5) Determine if the satellite platform has sent a data request; if so, and there is a completed data packet, the FPGA processor sends the data packet to the memory unit. If the data packet has not yet been formed, wait for it to be formed before sending it. After sending, format the memory unit; otherwise, re-determine if there is a data request. Step 6) The FPGA processor controls the memory unit to transmit the data packet to the satellite platform through the communication interface.

10. The detection method of a space particle detector based on a silicon detector module according to claim 9, characterized in that, 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 information of the charged particles in space. Specific steps include: Based on the received digital sampling signal, the amplitude value of each corresponding space charged particle is obtained by using an amplitude comparison method; different threshold voltages of each corresponding space charged particle are obtained by theoretical calculation and compared; based on the comparison results and combined with the known thickness of each silicon semiconductor detector, the energy spectrum and flux information of the corresponding space charged particle are obtained.

Citation Information

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