Particle number resolved time-to-digital conversion system, method, device and medium

Abstract

The present application relates to a particle number-resolved time-to-digital conversion system, method, device, and medium. The system includes a signal processing module for processing a received pulse signal through an amplification delay circuit, a first amplification circuit, and a second amplification circuit to obtain a first analog signal, a second analog signal, and a third analog signal; a time-to-digital conversion module for processing the first and second analog signals to output a time thermometer code representing time information; a particle number resolution module for receiving the third analog signal and performing particle number resolution to generate a particle number thermometer code representing particle number information; and a data processing and storage module for converting the time thermometer code and the particle number thermometer code into a time binary code and a particle number binary code, respectively, and storing them in the same memory word. This system enables multi-type particle detection and large-scale, high-precision time measurement.

Description

Technical Field

[0001] The present application relates to the field of signal processing technology, and in particular to a particle number resolved time-to-digital conversion system, method, device and medium. Background Art

[0002] Time measurement technology has evolved through the stages of development, from sundials and hourglasses to mechanical clocks, quartz clocks, and atomic clocks, with its accuracy continuously improving. Time-to-digital conversion technology plays a crucial role in high-precision time measurement modules. Its core concept is to convert continuous time signals into discrete digital signals for processing and analysis by digital circuits.

[0003] Currently, time-to-digital conversion technology has been widely applied in fields such as lidar, particle physics, and quantum information, greatly promoting the vigorous development of these fields. At the same time, cutting-edge research in these fields has further demanded higher precision and more functionality from time-to-digital conversion technology. In the field of laser imaging, accurately measuring the arrival time of photons enables three-dimensional range imaging, and accurately measuring the number of arriving photons enables grayscale imaging. In the field of high-energy physics, it is desirable not only to accurately measure the arrival time of particles but also to simultaneously determine the number of particles, thereby more accurately reconstructing the reaction process. In the field of quantum computing, accurately measuring the arrival time of photons ensures the accuracy of calculations, and determining the number of photons increases the speed of quantum computing. However, as the demand for high-precision time measurement continues to increase in various fields, existing time-to-digital conversion technology has limitations when facing these complex and demanding application scenarios, and it is difficult to fully meet the comprehensive needs of multi-dimensional high-precision measurement. Summary of the Invention

[0004] Based on this, it is necessary to provide a particle number resolved time-to-digital conversion system, method, device and medium to address the above technical problems.

[0005] A particle number resolution time-to-digital conversion system, comprising:

[0006] A signal processing module, a time-to-digital conversion module, a particle number resolution module, and a data processing and storage module; the time-to-digital conversion module and the particle number resolution module are connected to the signal processing module and the data processing and storage module respectively;

[0007] The signal processing module is connected to the particle detector, and is used to receive the pulse signal output by the particle detector, and process the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal;

[0008] The time-to-digital conversion module includes a comparison circuit and a time-to-digital conversion circuit. The comparison circuit is used to process the first analog signal and the second analog signal to output a digital pulse signal. The time-to-digital conversion circuit is used to generate a time thermometer code representing time information according to the digital pulse signal.

[0009] The particle number resolution module is configured to receive the third analog signal and perform particle number resolution to generate a particle number thermometer code representing particle number information;

[0010] The data processing and storage module includes an encoder and a memory. The encoder is used to receive the time thermometer code and the particle number thermometer code and convert them into a time binary code and a particle number binary code respectively. The memory is used to store the time binary code and the particle number binary code of the same pulse signal in the same storage word.

[0011] A particle number resolution time-to-digital conversion method, comprising:

[0012] receiving a pulse signal output by the particle detector, and processing the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal;

[0013] Processing the first analog signal and the second analog signal through the comparison circuit to output a digital pulse signal, and generating a time thermometer code representing time information according to the digital pulse signal through the time-to-digital conversion circuit;

[0014] receiving the third analog signal and performing particle number resolution through the particle number resolution module to generate a particle number thermometer code representing particle number information;

[0015] The encoder receives the time thermometer code and the particle number thermometer code and converts them into a time binary code and a particle number binary code respectively. The memory stores the time binary code and the particle number binary code of the same pulse signal in the same storage word.

[0016] A computer device includes a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0017] receiving a pulse signal output by the particle detector, and processing the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal;

[0018] Processing the first analog signal and the second analog signal through the comparison circuit to output a digital pulse signal, and generating a time thermometer code representing time information according to the digital pulse signal through the time-to-digital conversion circuit;

[0019] receiving the third analog signal and performing particle number resolution through the particle number resolution module to generate a particle number thermometer code representing particle number information;

[0020] The encoder receives the time thermometer code and the particle number thermometer code and converts them into a time binary code and a particle number binary code respectively. The memory stores the time binary code and the particle number binary code of the same pulse signal in the same storage word.

[0021] A computer-readable storage medium stores a computer program, which, when executed by a processor, implements the following steps:

[0022] receiving a pulse signal output by the particle detector, and processing the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal;

[0023] Processing the first analog signal and the second analog signal through the comparison circuit to output a digital pulse signal, and generating a time thermometer code representing time information according to the digital pulse signal through the time-to-digital conversion circuit;

[0024] receiving the third analog signal and performing particle number resolution through the particle number resolution module to generate a particle number thermometer code representing particle number information;

[0025] The encoder receives the time thermometer code and the particle number thermometer code and converts them into a time binary code and a particle number binary code respectively. The memory stores the time binary code and the particle number binary code of the same pulse signal in the same storage word.

[0026] The above-described particle number-resolved time-to-digital conversion system, method, device, and medium receive analog signals output by the detector through a signal processing module, amplify and delay them, and then input the processed signals into a particle number resolution module and a time-to-digital conversion module, respectively. One amplified signal enters the particle number resolution module, where the particle number (N) is measured and output to a data processing and storage module. The other signal, after undergoing small and large amplification and delay processing, enters the time-to-digital conversion module. This module converts both analog signals into digital pulse signals, measures the particle arrival time (T) based on the rising edge of the pulse signal, and outputs the time information to the data processing and storage module. The data processing and storage module converts the data formats of the particle number (N) and time (T) and stores them in the same memory word, ensuring data relevance and synchronization. This embodiment of the present invention enables simultaneous measurement of particle arrival time and number, supporting multi-type particle detection and enabling high-precision time measurement over a wide range, ensuring broad applicability and high-precision detection capabilities. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A schematic diagram of the structure of a particle number resolution time-to-digital conversion system in one embodiment;

[0028] Figure 2 is a schematic structural diagram of a signal processing module in one embodiment;

[0029] Figure 3 A schematic diagram of the structure of a particle number resolution module in one embodiment;

[0030] Figure 4 A schematic diagram of the structure of a time-to-digital conversion module in one embodiment;

[0031] Figure 5 This is a schematic diagram of the structure of a data processing and storage module in one embodiment;

[0032] Figure 6 Schematic diagram of a flow chart of a particle number resolution time-to-digital conversion method according to one embodiment;

[0033] Figure 7 FIG. 1 is a diagram showing the internal structure of a particle number-resolved time-to-digital conversion device in one embodiment. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0035] The present invention proposes a particle number-resolved time-to-digital conversion system, method, device, and medium. The particle number-resolved time-to-digital conversion system is constructed based on a signal processing module, a particle number resolution module, a time-to-digital conversion module, and a data processing and storage module. The particle number-resolved time-to-digital conversion system can be combined with a particle number-resolving detector with known or unknown response characteristics to achieve particle number-resolved time-to-digital conversion, meeting the urgent application needs of various fields for simultaneously measuring the arrival time and number of particles.

[0036] In one embodiment, Figure 1 As shown, a particle number resolution time-to-digital conversion system is provided, comprising:

[0037] A signal processing module, a time-to-digital conversion module, a particle number resolution module, and a data processing and storage module; the time-to-digital conversion module and the particle number resolution module are connected to the signal processing module and the data processing and storage module respectively;

[0038] The signal processing module is connected to the particle detector, and is used to receive the pulse signal output by the particle detector, and process the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal;

[0039] The time-to-digital conversion module includes a comparison circuit and a time-to-digital conversion circuit. The comparison circuit is used to process the first analog signal and the second analog signal to output a digital pulse signal. The time-to-digital conversion circuit is used to generate a time thermometer code representing time information according to the digital pulse signal.

[0040] The particle number resolution module is used to receive the third analog signal and perform particle number resolution to generate a particle number thermometer code representing particle number information;

[0041] The data processing and storage module includes an encoder and a memory. The encoder is used to receive the time thermometer code and the particle number thermometer code and convert them into the time binary code and the particle number binary code respectively. The memory is used to store the time binary code and the particle number binary code of the same pulse signal in the same storage word.

[0042] In the above-mentioned particle number-resolved time-to-digital conversion method, the analog signal output by the detector is received by a signal processing module, amplified and delayed, and then input into the particle number resolution module and the time-to-digital conversion module, respectively. One amplified signal enters the particle number resolution module, where the particle number (N) is measured and output to the data processing and storage module. The other signal, after undergoing small and large amplification and delay processing, enters the time-to-digital conversion module. This module converts both analog signals into digital pulse signals, measures the particle arrival time (T) based on the rising edge of the pulse signal, and outputs the time information to the data processing and storage module. The data processing and storage module converts the data formats of the particle number (N) and time (T) and stores them in the same memory word to ensure data relevance and synchronization. This embodiment of the present invention achieves simultaneous measurement of particle arrival time and number, not only supporting multi-type particle detection but also enabling large-scale, high-precision time measurement, ensuring broad applicability and high-precision detection capabilities.

[0043] In one embodiment, the pulse signal is processed by an amplifying delay circuit, a first amplifying circuit, and a second amplifying circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal, including: amplifying the pulse signal by a first amplifying factor by the amplifying delay circuit and delaying it according to a delay time to obtain a first analog signal; the delay time is less than the sum of a rise time and a fall time of the particle detector; amplifying the pulse signal by a second amplifying factor by the first amplifying circuit to obtain a second analog signal; the second amplifying factor is less than the first amplifying factor; amplifying the pulse signal by a third amplifying factor by the second amplifying circuit to obtain a third analog signal; the third amplifying factor is calculated by the maximum comparison voltage of the particle resolution module, the maximum value of the number of particles to be resolved, and the corresponding maximum amplitude.

[0044] In this embodiment, if Figure 2 The structural diagram of the signal processing module shown in the figure is that the original signal input is the analog signal output of different particle detectors. Considering that the response characteristics of different types of particle detectors are different, and the response characteristics of the same particle detector to different numbers of particles are also different, the signal processing module needs to perform different processing on the signals output to the particle number resolution module and the time-to-digital conversion module. For the signal output to the particle resolution module, the maximum number of particles to be resolved, N, must first be determined based on the actual test object. max And the corresponding maximum amplitude V max To achieve at least N max Particle number resolution, magnification A3 and the maximum comparison voltage V of the particle resolution module cmax Should meet:

[0045]

[0046] For the signal output to the time-to-digital conversion module, since the amplitude of the response characteristics of different particle populations varies greatly, using a single threshold comparison rule will result in large timing fluctuations, thus affecting timing accuracy. r and fall time τ d The constant ratio timing method requires two signals, a small signal without delay and a large signal with delay. Therefore, the amplification factors A1 and A2 and the delay time τ of the two amplifier circuits in the signal processing module must meet the following requirements:

[0047] A2<A1 (2)

[0048] 0<τ<τ r +τ d (3)

[0049] In one embodiment, the particle number resolution module receives the third analog signal through a high-speed ADC acquisition circuit or a multi-threshold comparison circuit and performs particle number resolution.

[0050] In this embodiment, if Figure 3 The schematic diagram of the particle number resolution module is shown in the figure. For specific application fields such as laser imaging, high-energy physics, and quantum information, the signal response time is usually less than 100ns, and even less than 10ns for single-photon detection. To achieve accurate particle number resolution, high-speed ADC acquisition circuits or multi-threshold comparison circuits can be used to achieve particle number resolution, such as Figure 3 As shown, when using a high-speed ADC to build a particle number resolution module, its sampling rate must be at least twice the detector output response frequency. The module input signal is an analog signal amplified by the signal processing module, and the module output signal is a digital signal representing the number of particles. In this module, the output is a thermometer code. The comparison voltages of each level are determined based on the output voltage of the particle detector. The nth level comparison voltage should be greater than the amplified voltage of the n-1 particle response output but less than the amplified voltage of the n particle response output. Generally, the middle value of the two is taken. Specifically, the nth level comparison voltage V n The maximum number of particles to be resolved N max , corresponding to the maximum amplitude V max , magnification A3 must meet the following requirements:

[0051]

[0052] In one embodiment, the comparison circuit is used to perform constant ratio timing processing on the first analog signal and the second analog signal, and output a digital pulse signal; the time-to-digital conversion module includes a coarse timing unit and a fine timing unit.

[0053] In this embodiment, considering the difference in particle arrival time and the need for long-term measurement, a multi-level timing unit is used in the time-to-digital conversion module to achieve high-precision time measurement over a wide range. Figure 4 The schematic diagram of the time-to-digital conversion module shown in FIG. 1 is a schematic diagram of the time-to-digital conversion module. The time-to-digital conversion module mainly includes a comparison circuit and a time-to-digital conversion circuit. The input signal of the comparison circuit is two processed analog signals, specifically a small signal S without delay and a large signal L with delay. The output signal is a fixed pulse width t w The specific basis for determining the generation of a digital pulse signal is:

[0054] V S ≤V L (5)

[0055] The input of the time-to-digital conversion circuit is a digital pulse signal, whose rising edge is used as a trigger signal for timing reading, and the output is a thermometer code representing time. Among them, the coarse timing unit is composed of a counter, and the fine timing unit is composed of a delay chain or a ring oscillator. The total duration of the fine timing unit must be greater than the clock signal period T clk The timing process is as follows: After the system is powered on, both the coarse and fine timing units begin timing. When the clock signal rises, the coarse timing unit increments by 1, the fine timing unit resets to zero, and timing restarts. When the particle detector's valid signal pulse rises, the coarse and fine timing unit counts are read into the processing unit, which processes them and outputs a thermometer code.

[0056] In one embodiment, the memory includes multiple storage words; each storage word includes a time information storage bit and a particle information storage bit; storing the time binary code and particle number binary code of the same pulse signal in the same storage word includes: writing the time binary code and particle number binary code of the current pulse signal in sequence into the corresponding same storage word according to the arrival order of the pulse signals.

[0057] In this embodiment, if Figure 5The data processing and storage module shown in the figure is a schematic diagram of the structure. The data processing and storage module includes an encoder and a memory. The encoder input is a thermometer code for time and particle count, and the output is a binary code for time and particle count. The memory stores the binary codes for time information and particle count information of the same pulse signal in the same memory word for subsequent data processing and analysis. Due to the difference in data processing time between the particle number resolution module and the time-to-digital conversion module, encoding and storage writing are performed using two independent paths to avoid interference and data loss during data processing. The storage bit width of the binary code for time information and the binary code for particle count information is determined according to actual needs. Since each detector input pulse signal generates a binary code for time information and a binary code for particle count information, the two must be stored in the memory word in sequence: the nth binary code for time information is written to the nth memory word, and the nth binary code for particle count information is written to the nth memory word. This storage rule ensures that the time data and particle count data in the same memory word originate from the same particle response pulse. The data processing and storage module improves storage efficiency and data synchronization by storing both types of data in the same memory word. Writing data sequentially according to pulse signals ensures a one-to-one correspondence between time and particle count information. Using two independent paths prevents interference and loss caused by differences in data processing time. This allows the two types of information to be closely linked during storage, avoiding the synchronization and storage separation issues inherent in traditional methods.

[0058] It should be understood that although Figure 1 The steps in the flowchart are shown in sequence as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise specified in this document, there is no strict order restriction for the execution of these steps, and these steps can be executed in other orders. In addition, Figure 1 At least part of the steps may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily executed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least part of the sub-steps or stages of other steps.

[0059] In one embodiment, Figure 6 As shown, a particle number resolution time-to-digital conversion method is provided, comprising the following steps:

[0060] Step 602: Receive a pulse signal output by the particle detector, and process the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit to obtain a first analog signal, a second analog signal, and a third analog signal.

[0061] Step 604 : Process the first analog signal and the second analog signal through a comparison circuit to output a digital pulse signal, and generate a time thermometer code representing time information according to the digital pulse signal through a time-to-digital conversion circuit.

[0062] Step 606 : Receive the third analog signal through the particle number resolution module and perform particle number resolution to generate a particle number thermometer code representing particle number information.

[0063] Step 608: The time thermometer code and the particle number thermometer code are received by an encoder and converted into a time binary code and a particle number binary code respectively. The time binary code and the particle number binary code of the same pulse signal are stored in the same storage word by a memory.

[0064] For the specific definition of the particle number resolution time-to-digital conversion method, please refer to the definition of the particle number resolution time-to-digital conversion system above, which will not be repeated here.

[0065] Each module in the aforementioned particle number-resolved time-to-digital conversion system can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor within a computer device in the form of hardware, or can be stored in a computer device memory in the form of software, allowing the processor to call and execute the corresponding operations of each module.

[0066] In one embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as follows: Figure 7 As shown. The computer device includes a processor, a memory, a network interface, a display screen and an input device connected via a system bus. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface of the computer device is used to communicate with an external terminal via a network connection. When the computer program is executed by the processor, a particle number resolution time-to-digital conversion method is implemented. The display screen of the computer device can be a liquid crystal display or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad provided on the computer device housing, or an external keyboard, touchpad or mouse.

[0067] Those skilled in the art will understand that Figure 7The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0068] In one embodiment, a computer device is provided, including a memory and a processor. The memory stores a computer program, and the processor implements the steps of the method in the above embodiment when executing the computer program.

[0069] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of the method in the above embodiment are implemented.

[0070] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, storage, database or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM) or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM).

[0071] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, all of which fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A particle number resolved time-to-digital conversion system, characterized in that: The system includes a signal processing module, a time-to-digital conversion module, a particle number resolution module, and a data processing and storage module; the time-to-digital conversion module and the particle number resolution module are connected to the signal processing module and the data processing and storage module respectively; The signal processing module is connected to the particle detector, and is used to receive the pulse signal output by the particle detector, and process the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal; The time-to-digital conversion module includes a comparison circuit and a time-to-digital conversion circuit. The comparison circuit is used to process the first analog signal and the second analog signal to output a digital pulse signal. The time-to-digital conversion circuit is used to generate a time thermometer code representing time information according to the digital pulse signal. The particle number resolution module is configured to receive the third analog signal and perform particle number resolution to generate a particle number thermometer code representing particle number information; The data processing and storage module includes an encoder and a memory. The encoder is used to receive the time thermometer code and the particle number thermometer code and convert them into a time binary code and a particle number binary code respectively. The memory is used to store the time binary code and the particle number binary code of the same pulse signal in the same storage word.

2. The particle number resolved time-to-digital conversion system according to claim 1, characterized in that: The processing of the pulse signal by the amplifying delay circuit, the first amplifying circuit, and the second amplifying circuit to obtain the first analog signal, the second analog signal, and the third analog signal comprises: Amplifying the pulse signal by a first amplification factor and delaying it according to a delay time by an amplifying delay circuit to obtain a first analog signal; the delay time is less than the sum of the rise time and the fall time of the particle detector; amplifying the pulse signal by a second amplification factor through the first amplification circuit to obtain a second analog signal; wherein the second amplification factor is smaller than the first amplification factor; The pulse signal is amplified by a third amplification factor through the second amplification circuit to obtain a third analog signal; the third amplification factor is calculated based on the maximum comparison voltage of the particle resolution module, the maximum value of the number of particles to be resolved, and the corresponding maximum amplitude.

3. The particle number resolved time-to-digital conversion system according to claim 2, characterized in that: If the particle number resolution is to achieve the maximum number of particles to be resolved, the relationship between the third magnification and the maximum comparison voltage of the particle resolution module is: in, is the maximum number of particles to be resolved, for The corresponding maximum amplitude, is the third magnification, is the maximum comparison voltage of the particle resolution module.

4. The particle number resolved time-to-digital conversion system according to claim 1, characterized in that: The comparison circuit is used to perform constant ratio timing processing on the first analog signal and the second analog signal, and output a digital pulse signal.

5. The particle number resolved time-to-digital conversion system according to claim 1, characterized in that: The time-to-digital conversion module includes a coarse timing unit and a fine timing unit.

6. The particle number resolved time-to-digital conversion system according to claim 1, characterized in that: The particle number resolution module receives the third analog signal through a high-speed ADC acquisition circuit or a multi-threshold comparison circuit and performs particle number resolution.

7. The particle number resolved time-to-digital conversion system according to claim 1, characterized in that: The memory includes a plurality of storage words; each storage word includes a time information storage bit and a particle information storage bit; The storing of the time binary code and the particle number binary code of the same pulse signal in the same storage word comprises: According to the arrival order of the pulse signals, the time binary code and the particle number binary code of the current pulse signal are written into the corresponding same storage word in sequence.

8. A method for use in the particle number resolved time-to-digital conversion system according to any one of claims 1 to 7, characterized in that: The method comprises: receiving a pulse signal output by the particle detector, and processing the pulse signal through the amplification delay circuit, the first amplification circuit, and the second amplification circuit respectively to obtain a first analog signal, a second analog signal, and a third analog signal; Processing the first analog signal and the second analog signal through the comparison circuit to output a digital pulse signal, and generating a time thermometer code representing time information according to the digital pulse signal through the time-to-digital conversion circuit; receiving the third analog signal and performing particle number resolution through the particle number resolution module to generate a particle number thermometer code representing particle number information; The encoder receives the time thermometer code and the particle number thermometer code and converts them into a time binary code and a particle number binary code respectively. The memory stores the time binary code and the particle number binary code of the same pulse signal in the same storage word.

9. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to claim 8 are implemented.

10. A readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to claim 8 are implemented.

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