Voltage control method and device of photon detector, and storage medium

Abstract

The present application discloses a voltage control method and device, storage medium, and computer equipment for a photon detector, the method comprising: obtaining a target bias voltage of the photon detector in response to a power-on signal of the photon detector; controlling a voltage generator to power on the photon detector in a step-by-step manner according to the output voltage, until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold. The present application realizes the power-on of the photon detector by controlling the output voltage of the voltage generator to rise in a step-by-step manner, effectively avoiding the ignition phenomenon that is easily caused by the large voltage difference in the detector module of the photon detector, and helping to improve the safety and service life of the photon detector.

Description

Technical Field

[0001] The present application relates to the technical field of photon detectors, and in particular to a voltage control method and device, a storage medium, and a computer device for a photon detector. Background Art

[0002] As a rapidly developing technology in recent years, photon counting detectors have received extensive attention and research in the industry. Usually, a high voltage generator is used to provide a power-on process that meets the power-on and power-off timing requirements of photon counting detectors. Figure 1 As shown, the power-on presents a slow rising trend, which meets the power-on design requirements of the photon counting detector.

[0003] However, in actual use, due to the high bias voltage of the photon counting detector, when the photon counting detector is powered by a high voltage generator, the detector modules in the photon counting detector have different devices or processes due to their internal structures (such as internal filter circuits and buffer circuits), and the voltage rise efficiency of each detector module is different. Limited by the mechanical installation requirements of the detector module, the gap between each detector module is small. This results in that when each detector module is powered on at the same time, due to the different power-on efficiencies of each detector module, there is a voltage difference between the detector modules, and sparks are easily generated at the gap, causing safety hazards to the photon counting detector. In addition, the photon counting detector is easily damaged and its service life cannot be guaranteed. Summary of the invention

[0004] In view of this, the present application provides a voltage control method and device, storage medium, and computer equipment for a photon detector. By controlling the voltage generator to power on the photon detector in a step-by-step manner, the detector module of the photon detector is prevented from easily causing sparks due to large pressure differences, which helps to improve the safety and service life of the photon detector.

[0005] According to one aspect of the present application, a voltage control method for a photon detector is provided, comprising:

[0006] In response to a power-on signal of the photon detector, obtaining a target bias voltage of the photon detector;

[0007] The control voltage generator powers on the photon detector in a step-by-step manner in which the output voltage is increased until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold.

[0008] Optionally, the control voltage generator powers on the photon detector in a step-by-step manner according to the output voltage until the power-on voltage of the voltage generator increases to the target bias voltage and remains unchanged, specifically comprising:

[0009] Using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and controlling the voltage generator in a manner of increasing the output voltage at intervals of a preset first delay time until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold; or

[0010] A preset initial voltage is used as the output voltage of the voltage generator, the voltage generator is controlled to power on the photon detector, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is increased incrementally until the output voltage increases to the target bias voltage and remains unchanged.

[0011] Optionally, the control voltage generator powers on the photon detector in a step-by-step manner in which the output voltage is increased until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, and the method further comprises:

[0012] In response to the power-off signal of the photon detector, the voltage generator is controlled to operate in a step-down manner in which the output voltage is decreased until the output voltage of the voltage generator is reduced to zero, wherein the output voltage reduction amount of the voltage generator each time is less than or equal to the preset threshold.

[0013] Optionally, controlling the voltage generator to operate in a step-wise decreasing manner of output voltage until the output voltage of the voltage generator decreases to zero specifically includes:

[0014] Controlling the output voltage of the voltage generator to decrease by a preset initial decrease amount, and controlling the voltage generator in a manner of decreasing the output voltage at each preset second delay time until the output voltage of the voltage generator decreases to zero, wherein the preset initial decrease amount is less than or equal to the preset threshold value; or,

[0015] The output voltage of the voltage generator is controlled to decrease by the preset initial decrease amount, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is decreased until the output voltage is reduced to zero.

[0016] Optionally, the preset threshold is determined according to a safety pressure difference threshold corresponding to adjacent detector modules in the photon detector, and the preset threshold is less than or equal to the safety pressure difference threshold.

[0017] Optionally, the method further comprises:

[0018] Monitoring the real-time voltage of the detector module in the photon detector;

[0019] When an abnormality is detected in the real-time voltage, the output voltage of the voltage generator is controlled to drop to zero, wherein the abnormality includes that the pressure difference corresponding to adjacent detector modules exceeds the safety pressure difference threshold and / or the real-time voltage of the detector module does not reach the output voltage of the voltage generator.

[0020] According to another aspect of the present application, a voltage control device for a photon detector is provided, comprising:

[0021] A signal response module, used for obtaining a target bias voltage of the photon detector in response to a power-on signal of the photon detector;

[0022] A voltage control module is used to control the voltage generator to power on the photon detector in a step-by-step manner in which the output voltage increases until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold.

[0023] Optionally, the voltage control device is connected to a scanning control unit of the photon detector, and the voltage control device is controlled by the scanning control unit; or,

[0024] The voltage control device is independent of the scanning control unit of the photon detector.

[0025] Optionally, the voltage control module is specifically used to:

[0026] Using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and controlling the voltage generator in a manner of increasing the output voltage at intervals of a preset first delay time until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold; or

[0027] A preset initial voltage is used as the output voltage of the voltage generator, the voltage generator is controlled to power on the photon detector, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is increased incrementally until the output voltage increases to the target bias voltage and remains unchanged.

[0028] Optionally, the signal response module is further used to:

[0029] In response to the power-off signal of the photon detector, the voltage generator is controlled to operate in a step-down manner in which the output voltage is decreased until the output voltage of the voltage generator is reduced to zero, wherein the output voltage reduction amount of the voltage generator each time is less than or equal to the preset threshold.

[0030] Optionally, the voltage control module is further used to:

[0031] Controlling the output voltage of the voltage generator to decrease by a preset initial decrease amount, and controlling the voltage generator in a manner of decreasing the output voltage at each preset second delay time until the output voltage of the voltage generator decreases to zero, wherein the preset initial decrease amount is less than or equal to the preset threshold value; or,

[0032] The output voltage of the voltage generator is controlled to decrease by the preset initial decrease amount, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is decreased until the output voltage is reduced to zero.

[0033] Optionally, the preset threshold is determined according to a safety pressure difference threshold corresponding to adjacent detector modules in the photon detector, and the preset threshold is less than or equal to the safety pressure difference threshold.

[0034] Optionally, the device further comprises:

[0035] A monitoring module is used to monitor the real-time voltage of the detector module in the photon detector; when an abnormality is detected in the real-time voltage, the output voltage of the voltage generator is controlled to drop to zero, wherein the abnormality includes that the voltage difference corresponding to the adjacent detector modules exceeds the safety voltage difference threshold and / or the real-time voltage of the detector module does not reach the output voltage of the voltage generator.

[0036] According to another aspect of the present application, a photon detector system is provided, comprising: a photon detector, a voltage generator and a voltage control device for the photon detector, wherein the voltage control device is connected to the photon detector and the voltage generator respectively, and the voltage control device is used to execute the above-mentioned voltage control method for the photon detector.

[0037] According to another aspect of the present application, a storage medium is provided, on which a computer program is stored, and when the program is executed by a processor, the voltage control method of the photon detector is implemented.

[0038] According to another aspect of the present application, a computer device is provided, including a storage medium, a processor, and a computer program stored on the storage medium and executable on the processor, wherein the processor implements the voltage control method of the photon detector when executing the program.

[0039] By means of the above technical solution, the present application provides a voltage control method and device for a photon detector, a storage medium, and a computer device. When a voltage generator is used to power on the photon detector, the voltage generator is controlled to increase the output voltage of the voltage generator in a step-by-step manner in accordance with the output voltage step-by-step increase, so that the voltage generator powers on the photon detector in a step-by-step manner until the output voltage reaches the target bias voltage of the tube detector and remains unchanged. The embodiment of the present application powers on the photon detector by controlling the output voltage of the voltage generator to rise in a step-by-step manner, which effectively avoids the ignition phenomenon that is easily caused by the large pressure difference in the detector module of the photon detector, and helps to improve the safety and service life of the photon detector.

[0040] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0042] Figure 1 A schematic diagram of voltage trend during the power-on process of a photon detector provided in an embodiment of the present application is shown;

[0043] Figure 2 A schematic flow chart of a voltage control method for a photon detector provided in an embodiment of the present application is shown;

[0044] Figure 3A schematic diagram of voltage trend during the power-on process of another photon detector provided in an embodiment of the present application is shown;

[0045] Figure 4 A schematic flow chart of a power-on control method of a photon detector provided in an embodiment of the present application is shown;

[0046] Figure 5 A schematic diagram of voltage trend during power-down of a photon detector provided in an embodiment of the present application is shown;

[0047] Figure 6 A schematic flow chart of a power-off control method of a photon detector provided in an embodiment of the present application is shown;

[0048] Figure 7 A schematic structural diagram of another voltage control device for a photon detector provided in an embodiment of the present application is shown;

[0049] Figure 8 A schematic structural diagram of a voltage control system of another photon detector provided in an embodiment of the present application is shown. DETAILED DESCRIPTION

[0050] The present application will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0051] In this embodiment, a voltage control method of a photon detector is provided. Figure 2 As shown, the method includes:

[0052] Step 101, in response to a power-on signal of a photon detector, obtaining a target bias voltage of the photon detector;

[0053] Step 102, controlling the voltage generator to power on the photon detector in a step-by-step manner in which the output voltage is increased until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold.

[0054] The embodiment of the present application realizes power-on control of the photon detector by controlling the output voltage of the voltage generator. The method can be applied to a controller independent of the photon detector (e.g., a photon counting detector), or integrated into the controller of the photon detector, and is not limited here. The power-on signal of the photon detector can be a power-on instruction input by the user, or a start signal of the photon detector, etc. In response to the power-on signal of the photon detector, the power-on control program of the voltage generator can be started, and the output voltage of the voltage generator can be controlled to gradually rise to the target bias voltage of the photon detector, thereby realizing the power-on operation of the photon detector. Among them, the target bias voltage is the voltage value that each detector module of the photon detector is expected to reach. Since the target bias voltage of the photon detector is usually large, directly outputting according to the target bias voltage is likely to cause the detector module to ignite. Therefore, this embodiment uses an incremental method to control the output voltage of the voltage generator to provide a gradually increasing power-on for the photon detector. The target bias voltage that was originally reached at one time is gradually increased in a step-by-step manner to control the output voltage of the voltage generator to rise in steps, and gradually control the output voltage to rise to the target bias voltage to complete the power-on of the photon detector. Figure 3 As shown in FIG. 1 , Vupset represents the voltage increase during the power-on process.

[0055] For example, if the target bias voltage is 1000V, the voltage generator can be controlled to initially provide a 200V voltage to power on the photon detector. In this way, even if there are differences in the power-on efficiency of the detector modules of the photon detector, the voltage difference between the modules will not exceed 200V, and there will be almost no sparking, thereby ensuring the safety of the detector module and the photon detector. Furthermore, the output voltage of the voltage generator can be controlled to increase by 200V at regular intervals until it reaches 1000V and remains stable. Specifically, when the detector modules of the photon detector rise to 200V after a period of time, the output voltage of the voltage generator can be increased to 400V, and then gradually increased to 600V, 800V, and 1000V.

[0056] It should be noted that in order to ensure the safety of each detector module of the photon detector, in the process of gradually increasing the output voltage, the voltage value of each increase should be kept within a certain range, and the increase in output voltage each time should be less than or equal to a preset threshold. The preset threshold can be customized or set based on a test value, as long as it can ensure that the detector module will not cause sparking due to a large voltage difference after each voltage increase.

[0057] Optionally, the preset threshold is determined according to a safety pressure difference threshold corresponding to adjacent detector modules in the photon detector, and the preset threshold is less than or equal to the safety pressure difference threshold.

[0058] In a specific application scenario, in order to increase the power-on speed, a maximum increase that can ensure the safety of the detector module can be set by testing the safety pressure difference threshold of the detector module. For example, under an extreme condition, a detector module is damaged and cannot be powered on. The maximum voltage value of the adjacent detector module without causing sparks is tested. The voltage value of the detector module that cannot be powered on is 0. The maximum voltage value of the adjacent module can be used as the safety pressure difference threshold, so that the safety pressure difference threshold can be directly used as the above-mentioned preset threshold, or the preset threshold can be determined after further calculation of the safety pressure difference threshold. No limitation is made here.

[0059] By applying the technical solution of this embodiment, when the voltage generator is used to power on the photon detector, the voltage generator is controlled to increase the output voltage of the voltage generator step by step in a manner that the output voltage increases in steps, so that the voltage generator powers on the photon detector in a step-by-step manner until the output voltage reaches the target bias voltage of the tube detector and remains unchanged. The embodiment of the present application realizes the power-on of the photon detector by controlling the output voltage of the voltage generator to increase in a step-by-step manner, which effectively avoids the detector module of the photon detector from easily causing ignition due to a large pressure difference, and helps to improve the safety and service life of the photon detector.

[0060] In the embodiment of the present application, optionally, step 102 may specifically include:

[0061] Step 102-1, using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and controlling the voltage generator in a manner of increasing the output voltage incrementally every preset first delay time until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold value.

[0062] In the above embodiment, in the process of controlling the voltage generator to power on the photon detector, a control instruction can be first sent to the voltage generator to control the voltage generator to use a preset initial voltage as the output voltage to power on the photon detector. After a preset first delay time, a control instruction is sent to the voltage generator to control the voltage generator to increase the output voltage. Then, after the preset first delay time, a control instruction is sent to the voltage generator again to control the output voltage of the voltage generator to increase again. This process is repeated until the output voltage of the voltage generator reaches the target bias voltage and remains unchanged. In this process, the voltage value increased each time can be the same or different, as long as the voltage increase each time is less than or equal to the preset threshold value. In addition, the preset first delay time of each control instruction interval can also be the same or different. This delay time can have a positive correlation with the previous voltage increase. For example, the delay time after increasing the output voltage by 300V can be longer than the delay time after increasing the output voltage by 200V. The specific delay time can be determined based on the previous voltage increase and the minimum power-on efficiency of the detector module, that is, the delay time is determined based on the principle of ensuring that the detector module with the lowest power-on efficiency can reach the output voltage of the voltage generator within the delay time. The delay time can also be calculated based on the power-on rate, and the delay time can be greater than or equal to the quotient of the increased voltage and the power-on rate.

[0063] like Figure 4 As shown, in an example of the power-on control process of a photon detector, P volts is the step value of power-on. The target bias voltage of 1000V represents the voltage value for completing power-on. If P volts is 200V, the power-on voltage instructions are 200V, 400V, 600V, 800V, and 1000V, respectively. TI is the delay time. When the photon detector needs to be powered on, it can first be determined whether there is a bias voltage warning. If not, a control instruction is sent to the voltage generator to control the voltage of the voltage generator to power up to an output voltage that is P volts higher than the previous output voltage. After a delay of T1, it is determined again whether there is a bias voltage warning. If not, it is detected whether the power-on is completed. If not, continue to send instructions, repeat the above process until the power-on is completed, and send the power-on completion flag. In this process, if a voltage warning signal is detected, an instruction to power down the voltage to 0V is sent to the voltage generator to control the voltage generator to power down.

[0064] In the embodiment of the present application, optionally, step 102 may specifically include:

[0065] Step 102-2, using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and increasing the output voltage of the voltage generator each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, until the output voltage increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold.

[0066] In the above embodiment, in the process of controlling the voltage generator to power on the photon detector, a control instruction can be first sent to the voltage generator to control the voltage generator to power on the photon detector according to the preset initial voltage as the output voltage, and at the same time, the real-time voltage of each detector module in the photon detector is detected. If the voltage of each module reaches the current output voltage of the voltage generator, then the output voltage of the voltage generator is increased, and after judging that the real-time voltage of each module reaches the output voltage of the voltage generator again, it continues to increase, and so on, until the output voltage reaches the target bias voltage and remains unchanged. For example, the voltage generator is first controlled to power on the photon detector with an output voltage of 200V. When it is detected that each detector module has reached 200V, the output voltage of the voltage generator is increased to 400V, and so on, until the target bias voltage is reached. And it is ensured that the amount of each increase is within a certain range and will not cause excessive voltage difference between modules.

[0067] In the embodiment of the present application, optionally, the method may further include:

[0068] Step 103, in response to the power-off signal of the photon detector, controlling the voltage generator to operate in a step-down manner in which the output voltage is decreased until the output voltage of the voltage generator is reduced to zero, wherein the output voltage reduction amount of the voltage generator each time is less than or equal to the preset threshold.

[0069] In this embodiment, when the photon detector needs to be powered off, in order to avoid the detector module having different power-off efficiencies due to the internal structure, which may easily cause excessive voltage difference and even sparking, the photon detector can also be powered off gradually until the output voltage of the control voltage generator drops to 0V, where, similar to the power-on process, the output voltage reduction amount each time is less than or equal to the preset threshold. Figure 5 As shown, Vdownset represents the voltage reduction amount during the power-off process. In addition, after power-off, the status information of the detector module can also be collected.

[0070] In the embodiment of the present application, optionally, step 103 may specifically include:

[0071] Step 103-1, controlling the output voltage of the voltage generator to reduce a preset initial reduction amount, and controlling the voltage generator in a manner of decreasing the output voltage at each preset second delay time until the output voltage of the voltage generator is reduced to zero, wherein the preset initial reduction amount is less than or equal to the preset threshold value.

[0072] In the above embodiment, in the process of controlling the voltage generator to power off the photon detector, a control instruction can be first sent to the voltage generator to control the voltage generator to reduce a certain amount (i.e., a preset initial reduction amount) based on the existing output voltage as a new output voltage to power off the photon detector, and then a control instruction is sent to the voltage generator after a preset second delay time to control the voltage generator to reduce the output voltage. Then, after the preset second delay time, a control instruction is sent to the voltage generator again to control the output voltage of the voltage generator to reduce again, and this cycle is repeated until the output voltage of the voltage generator is reduced to zero. In this process, the voltage value reduced each time can be the same or different, as long as the voltage reduction amount each time is less than or equal to the preset threshold value. In addition, the preset second delay time for each control instruction interval can also be the same or different. This delay time can be positively correlated with the previous voltage reduction amount. For example, the delay time after reducing the output voltage by 300V can be longer than the delay time after reducing the output voltage by 200V. The specific delay time can be determined based on the previous voltage reduction amount and the minimum power-off rate of the detector module, that is, the delay time is determined based on the principle of ensuring that the detector module with the lowest power-off efficiency can reach the output voltage of the voltage generator within the delay time.

[0073] like Figure 6 As shown, in an example of the power-off control process of a photon detector, G volts is the step value of power-off. For example, before power-off, the output voltage value of the voltage generator is 1000V, and G volts is 200V, then the power-off voltage instructions are 800V, 600V, 400V, 200V, and 0V, respectively. MI is the delay time. When the photon detector needs to be powered off, it can first be determined whether there is a bias voltage warning. If not, a control instruction is sent to the voltage generator to control the voltage of the voltage generator to be powered off to G volts less than the previous output voltage. After a delay of M1, it is determined again whether there is a bias voltage warning. If not, it is detected whether the power-off is completed. If not, continue to send instructions, repeat the above process until the power-off is completed, and send the power-off completion flag. In this process, if a voltage warning signal is detected, an instruction to power down the voltage to 0V is sent to the voltage generator.

[0074] In the embodiment of the present application, optionally, step 103 may specifically include:

[0075] Step 103-2, controlling the output voltage of the voltage generator to reduce the preset initial reduction amount, and decreasing the output voltage of the voltage generator each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator until the output voltage is reduced to zero.

[0076] In the above embodiment, in the process of controlling the voltage generator to power off the photon detector, a control instruction can be first sent to the voltage generator to control the voltage generator to reduce a certain amount (i.e., a preset initial reduction amount) based on the existing output voltage as a new output voltage, and power off the photon detector. At the same time, the real-time voltage of each detector module in the photon detector is detected. If the voltage of each module reaches the current output voltage of the voltage generator, then the output voltage of the voltage generator is reduced, and after judging that the real-time voltage of each module reaches the output voltage of the voltage generator again, it continues to be reduced, and so on, until the output voltage drops to zero. For example, the output voltage of the voltage generator is 1000V before powering off, and the voltage generator is first controlled to reduce 200V, and the photon detector is powered off with an output voltage of 800V. When it is detected that each detector module drops to 800V, the output voltage of the voltage generator is reduced to 600V, and so on, until the output voltage of the voltage generator drops to zero. And it is ensured that the reduction amount each time is within a certain range and will not cause excessive pressure difference between modules.

[0077] In the embodiment of the present application, optionally, the method further includes:

[0078] Step 104, monitoring the real-time voltage of the detector module in the photon detector;

[0079] Step 105, when an abnormality is detected in the real-time voltage, the output voltage of the voltage generator is controlled to drop to zero, wherein the abnormality includes that the pressure difference corresponding to adjacent detector modules exceeds the safety pressure difference threshold and / or the real-time voltage of the detector module does not reach the output voltage of the voltage generator.

[0080] In the above embodiment, in order to further improve the safety of the photon detector, the real-time voltage of each detector module can also be monitored, and when the real-time voltage is found to be abnormal, the voltage generator is controlled to be powered off to ensure the safety of each detector module. The real-time voltage abnormality can include the voltage difference between adjacent detector modules being greater than the safety voltage difference threshold, thereby avoiding the detector module from igniting. The real-time voltage abnormality can also include the real-time voltage of the monitored detector module not reaching the output voltage of the voltage generator. In a specific application scenario, a fault tolerance time can be set. If the real-time voltage of the detector module is always inconsistent with the output voltage of the voltage generator within the fault tolerance time, it is determined that the real-time voltage is abnormal. In addition, the overshoot abnormality can be monitored.

[0081] In the embodiment of the present application, optionally, before step 102, the method further includes: receiving a self-test success signal of the photon detector, wherein the self-test success signal is used to indicate that a self-test of at least one functional component of the photon detector is successful.

[0082] In the above embodiment, the detector self-check, the data collection unit self-check, and the check whether there is a bias voltage warning signal can be performed.

[0083] In addition, in the embodiment of the present application, it may also include: reporting the current voltage of the detector module at preset time intervals during the power-on process and the power-off process.

[0084] Further, as Figure 1 The specific implementation of the method, the embodiment of the present application provides a voltage control device for a photon detector, such as Figure 7 As shown, the device comprises:

[0085] A signal response module, used for obtaining a target bias voltage of the photon detector in response to a power-on signal of the photon detector;

[0086] A voltage control module is used to control the voltage generator to power on the photon detector in a step-by-step manner in which the output voltage increases until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold.

[0087] Optionally, the voltage control module is specifically used to:

[0088] Using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and controlling the voltage generator in a manner of increasing the output voltage at intervals of a preset first delay time until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold; or

[0089] A preset initial voltage is used as the output voltage of the voltage generator, the voltage generator is controlled to power on the photon detector, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is increased incrementally until the output voltage increases to the target bias voltage and remains unchanged.

[0090] Optionally, the signal response module is further used to:

[0091] In response to the power-off signal of the photon detector, the voltage generator is controlled to operate in a step-down manner in which the output voltage is decreased until the output voltage of the voltage generator is reduced to zero, wherein the output voltage reduction amount of the voltage generator each time is less than or equal to the preset threshold.

[0092] Optionally, the voltage control module is further used to:

[0093] Controlling the output voltage of the voltage generator to decrease by a preset initial decrease amount, and controlling the voltage generator in a manner of decreasing the output voltage at each preset second delay time until the output voltage of the voltage generator decreases to zero, wherein the preset initial decrease amount is less than or equal to the preset threshold value; or,

[0094] The output voltage of the voltage generator is controlled to decrease by the preset initial decrease amount, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is decreased until the output voltage is reduced to zero.

[0095] Optionally, the preset threshold is determined according to a safety pressure difference threshold corresponding to adjacent detector modules in the photon detector, and the preset threshold is less than or equal to the safety pressure difference threshold.

[0096] Optionally, the device further comprises:

[0097] A monitoring module is used to monitor the real-time voltage of the detector module in the photon detector; when an abnormality is detected in the real-time voltage, the output voltage of the voltage generator is controlled to drop to zero, wherein the abnormality includes that the voltage difference corresponding to the adjacent detector modules exceeds the safety voltage difference threshold and / or the real-time voltage of the detector module does not reach the output voltage of the voltage generator.

[0098] Optionally, the voltage control device is connected to a scanning control unit of the photon detector, and the voltage control device is controlled by the scanning control unit; or, the voltage control device is independent of the scanning control unit of the photon detector.

[0099] In the above embodiment, the voltage control device can be used as the next level unit of the scanning control unit of the photon detector. The voltage control device is controlled by the scanning control unit, so that the control time of the voltage control device is controllable. Alternatively, the voltage control device can be independent of the scanning control unit of the photon detector, which has strong compatibility. If the voltage generator is upgraded or changed, only the voltage control device needs to be changed.

[0100] Furthermore, the present application embodiment provides a voltage control system for a photon detector, such as Figure 8 As shown, the system includes: a photon detector, a voltage generator, and a voltage control device for the photon detector, wherein the voltage control device is connected to the photon detector and the voltage generator respectively, and the voltage control device is used to execute the voltage control method for the photon detector. The voltage control device can be independent of the scanning control unit of the photon detector, or the control program of the voltage control device can be integrated into the scanning control unit.

[0101] It should be noted that for other corresponding descriptions of the functional units involved in the voltage control device of a photon detector provided in the embodiment of the present application, reference can be made to Figures 1 to 6 The corresponding description in the method will not be repeated here.

[0102] Based on the above Figures 1 to 6 The method shown in the embodiment of the present application is accordingly provided with a storage medium on which a computer program is stored, and when the computer program is executed by a processor, the above-mentioned Figures 1 to 6 The voltage control method of the photon detector is shown.

[0103] Based on this understanding, the technical solution of the present application can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.), and includes a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in each implementation scenario of the present application.

[0104] Based on the above Figures 1 to 6 The method shown, and Figure 7 In order to achieve the above-mentioned purpose, the embodiment of the present application further provides a computer device, which can be a personal computer, a server, a network device, etc. The computer device includes a storage medium and a processor; the storage medium is used to store a computer program; the processor is used to execute the computer program to achieve the above-mentioned Figures 1 to 6 The voltage control method of the photon detector is shown.

[0105] Optionally, the computer device may further include a user interface, a network interface, a camera, a radio frequency (RF) circuit, a sensor, an audio circuit, a WI-FI module, etc. The user interface may include a display, an input unit such as a keyboard, etc., and the optional user interface may also include a USB interface, a card reader interface, etc. The network interface may optionally include a standard wired interface, a wireless interface (such as a Bluetooth interface, a WI-FI interface), etc.

[0106] Those skilled in the art will appreciate that the computer device structure provided in this embodiment does not limit the computer device, and may include more or fewer components, or a combination of certain components, or different component arrangements.

[0107] The storage medium may also include an operating system and a network communication module. The operating system is a program that manages and saves the hardware and software resources of the computer device, and supports the operation of information processing programs and other software and / or programs. The network communication module is used to realize communication between the components inside the storage medium, and communication with other hardware and software in the physical device.

[0108] Through the description of the above implementation methods, those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform, or by means of hardware, when a voltage generator is used to power on a photon detector, the voltage generator is controlled to increase the output voltage in a step-by-step manner, so that the voltage generator powers on the photon detector in a step-by-step manner until the output voltage reaches the target bias voltage of the tube detector and remains unchanged. The embodiment of the present application powers on the photon detector by controlling the output voltage of the voltage generator to rise in a step-by-step manner, which effectively avoids the ignition phenomenon that is easily caused by the large pressure difference in the detector module of the photon detector, and helps to improve the safety and service life of the photon detector.

[0109] Those skilled in the art will appreciate that the accompanying drawings are only schematic diagrams of a preferred implementation scenario, and the modules or processes in the accompanying drawings are not necessarily necessary for implementing the present application. Those skilled in the art will appreciate that the modules in the devices in the implementation scenario can be distributed in the devices of the implementation scenario according to the description of the implementation scenario, or can be changed accordingly and located in one or more devices different from the present implementation scenario. The modules of the above-mentioned implementation scenario can be combined into one module, or can be further split into multiple submodules.

[0110] The above serial numbers of this application are only for description and do not represent the advantages and disadvantages of the implementation scenarios. The above disclosure is only a few specific implementation scenarios of this application, but this application is not limited to them, and any changes that can be thought of by technicians in this field should fall within the scope of protection of this application.

Claims

1. A voltage control method for a photon detector, characterized in that: include: In response to a power-on signal of the photon detector, obtaining a target bias voltage of the photon detector; The control voltage generator powers on the photon detector in a step-by-step manner in which the output voltage is increased until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold value, and the preset threshold value is determined based on a safety voltage difference threshold value corresponding to adjacent detector modules in the photon detector, and the preset threshold value is less than or equal to the safety voltage difference threshold value.

2. The method according to claim 1, characterized in that The control voltage generator powers on the photon detector in a step-by-step manner according to the output voltage until the power-on voltage of the voltage generator increases to the target bias voltage and remains unchanged, specifically comprising: Using a preset initial voltage as the output voltage of the voltage generator, controlling the voltage generator to power on the photon detector, and controlling the voltage generator in a manner of increasing the output voltage at intervals of a preset first delay time until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the preset initial voltage is less than or equal to the preset threshold; or A preset initial voltage is used as the output voltage of the voltage generator, the voltage generator is controlled to power on the photon detector, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is increased incrementally until the output voltage increases to the target bias voltage and remains unchanged.

3. The method according to claim 1, characterized in that The control voltage generator powers on the photon detector in a step-by-step manner in which the output voltage is increased until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, the method further comprising: In response to the power-off signal of the photon detector, the voltage generator is controlled to operate in a step-down manner in which the output voltage is decreased until the output voltage of the voltage generator is reduced to zero, wherein the output voltage reduction amount of the voltage generator each time is less than or equal to the preset threshold.

4. The method according to claim 3, characterized in that The step of controlling the voltage generator to operate in a step-wise decreasing manner of the output voltage until the output voltage of the voltage generator is reduced to zero specifically includes: Controlling the output voltage of the voltage generator to decrease by a preset initial decrease amount, and controlling the voltage generator in a manner of decreasing the output voltage at each preset second delay time until the output voltage of the voltage generator decreases to zero, wherein the preset initial decrease amount is less than or equal to the preset threshold value; or, The output voltage of the voltage generator is controlled to decrease by the preset initial decrease amount, and each time it is detected that the real-time voltages of multiple detector modules in the photon detector match the output voltage of the voltage generator, the output voltage of the voltage generator is decreased until the output voltage is reduced to zero.

5. The method according to any one of claims 1 to 4, characterized in that The method further comprises: Monitoring the real-time voltage of the detector module in the photon detector; When an abnormality is detected in the real-time voltage, the output voltage of the voltage generator is controlled to drop to zero, wherein the abnormality includes that the pressure difference corresponding to adjacent detector modules exceeds the safety pressure difference threshold and / or the real-time voltage of the detector module does not reach the output voltage of the voltage generator.

6. A voltage control device for a photon detector, characterized in that: include: A signal response module, used for obtaining a target bias voltage of the photon detector in response to a power-on signal of the photon detector; A voltage control module is used to control the voltage generator to power on the photon detector in a step-by-step manner in which the output voltage increases until the output voltage of the voltage generator increases to the target bias voltage and remains unchanged, wherein the output voltage increase of the voltage generator each time is less than or equal to a preset threshold, and the preset threshold is determined based on a safety voltage difference threshold corresponding to adjacent detector modules in the photon detector, and the preset threshold is less than or equal to the safety voltage difference threshold.

7. The device according to claim 6, characterized in that The voltage control device is connected to the scanning control unit of the photon detector, and the voltage control device is controlled by the scanning control unit; or, The voltage control device is independent of the scanning control unit of the photon detector.

8. A photon detector system, characterized in that: include: A photon detector, a voltage generator and a voltage control device for the photon detector, wherein the voltage control device is connected to the photon detector and the voltage generator respectively, and the voltage control device is used to execute the voltage control method for the photon detector as described in any one of claims 1 to 5.

9. A computer device comprising a storage medium, a processor, and a computer program stored in the storage medium and executable on the processor, characterized in that: When the processor executes the computer program, the method according to any one of claims 1 to 5 is implemented.

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