High-pressure ionization chamber gamma radiation monitoring device with on-line self-diagnosis function
By integrating components such as ionization chamber detectors into an online self-diagnostic system, the problem of cumbersome manual diagnosis in traditional high-pressure ionization chamber gamma radiation monitoring devices has been solved. This system enables real-time performance evaluation and fault diagnosis, improving the automation and data reliability of the monitoring device.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-03-31
AI Technical Summary
In the long-term operation of traditional high-pressure ionization chamber gamma radiation monitoring devices, the drift of components such as the micro-current converter affects the measurement accuracy. Existing technologies rely on manual offline detection, which is cumbersome and cannot monitor the device status in real time.
It integrates an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system. By switching modes through the programmable switch, it injects standard current and collects key parameters to achieve online self-diagnosis and parameter calibration.
Online automatic diagnosis of the high-pressure ionization chamber gamma radiation monitoring device was realized, ensuring the reliability of radiation monitoring data, improving the level of automation, and saving manpower and time costs.
Smart Images
Figure CN121763341A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of radiation monitoring technology, and in particular to a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnosis function. Background Technology
[0002] In the long-term operation of traditional high-pressure ionization chamber gamma radiation monitoring devices, the zero point of the micro-current converter, the conversion resistance or capacitance value, and the high and low temperature power supply voltage may all drift, which will affect the accuracy of gamma radiation measurement results.
[0003] In response, related technologies often rely on manual offline detection of these potentially drifting objects. This offline detection process requires opening the device casing and using specialized instruments for measurement, which is cumbersome and time-consuming. Furthermore, it's impossible to monitor the actual operating status of the high-pressure ionization chamber gamma radiation monitoring device in real time, nor can it provide timely fault warnings.
[0004] Therefore, how to conveniently and promptly complete the diagnostic work of the high-pressure ionization chamber gamma radiation monitoring device has become an urgent technical problem to be solved. Summary of the Invention
[0005] This application provides a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnosis function, aiming to solve the technical problem that the manual diagnosis method of high-pressure ionization chamber gamma radiation monitoring device in related technologies cannot meet the requirements of speed and real-time device diagnosis.
[0006] In a first aspect, embodiments of this application provide a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnostic function, comprising: an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system, wherein... The programmable high-voltage source is connected to the ionization chamber detector to provide a high operating voltage for the ionization chamber detector; the micro-current converter is connected to the ionization chamber detector to convert the weak current output by the ionization chamber detector into a measurable electrical signal; the programmable constant current source is connected between the ionization chamber detector and the input terminal of the micro-current converter; the programmable switch is connected between the programmable constant current source and the input terminal of the micro-current converter; the data acquisition and control system is connected to the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the power supply, respectively; wherein, The data acquisition and control system sets the output of the programmable high-voltage source to zero, opens the programmable switch, and acquires the first output value and the first supply voltage value of the micro-current converter. Then, it sets the output of the programmable constant current source to a predetermined current value, closes the programmable switch, and acquires the second output value of the micro-current converter. Based on the predetermined current value and the second output value, it determines the impedance parameter of the current measurement circuit. The data acquisition and control system determines whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first, second, and third reference values are all within a first normal threshold range. If the determination result is yes, it sets the programmable switch to open, the programmable high-voltage source to output a normal operating voltage, and acquires the third output value and the second supply voltage value of the micro-current converter. When the difference between the second supply voltage value and the pre-stored supply voltage reference value is within a second normal threshold range, it determines the radiation measurement result based on the third output value and the pre-stored zero-point reference value. If the determination result is no, it outputs a performance abnormality warning message.
[0007] Optionally, in one embodiment of this application, the device further includes: A power supply is connected to the ionization chamber detector, the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the data acquisition and control system, and is used to supply power to the various components of the high-pressure ionization chamber gamma radiation monitoring device.
[0008] Optionally, in one embodiment of this application, the microcurrent converter includes: A signal conversion element is used to convert the weak current output by the ionization chamber detector into a measurable electrical signal, wherein the signal conversion element is a resistive component or a capacitive component, and the measurable electrical signal is a voltage signal or a charge signal; An amplifier, connected in parallel with the signal conversion element, is used to amplify the voltage signal or convert the charge signal into a frequency signal.
[0009] Secondly, embodiments of this application provide an online self-diagnosis method for a high-pressure ionization chamber gamma radiation monitoring device, applied to the high-pressure ionization chamber gamma radiation monitoring device described in any one of the first aspects above, comprising: Set the output of the programmable high-voltage source to zero and control the programmable switch to disconnect; Acquire the first output value and the first supply voltage value of the micro-current converter; Set the predetermined current value of the programmable constant current source output and control the programmable switch to close; Acquire the second output value of the micro current converter, and determine the impedance parameters of the current measurement loop based on the predetermined current value and the second output value; Determine whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first reference value, second reference value, and third reference value are all within the first normal threshold range; If the judgment result is yes, the programmable switch is turned off, and the programmable high voltage source is set to output a normal working voltage. The third output value and the second supply voltage value of the micro current converter are collected. If the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range, the radiation measurement result is determined based on the third output value and the pre-stored zero-point reference value. Otherwise, the process returns to the step of collecting the third output value and the second supply voltage value of the micro current converter until the number of collections reaches the first preset number or the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range.
[0010] Optionally, in one embodiment of this application, the method further includes: If the judgment result is negative, return to the step of setting the output of the programmable high voltage source to zero and controlling the programmable switch to disconnect, until the differences between the first output value, the first power supply voltage value, and the impedance parameter and the first reference value, the second reference value, and the third reference value are all within the first normal threshold range or the number of repetitions reaches the second predetermined number of times; If the number of repetitions reaches a second predetermined number and the judgment result is still negative, a fault prompt message is generated.
[0011] In one embodiment of this application, optionally, before setting the output of the programmable high-voltage source to zero and controlling the programmable switch to disconnect, the method further includes: At specified time intervals, the system enters a self-diagnostic state, which allows it to proceed with the steps of setting the output of the programmable high-voltage source to zero and controlling the programmable switch to disconnect.
[0012] Thirdly, embodiments of this application provide a computer device, including: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores instructions executable by the at least one processor, the instructions being configured to perform the method described in the second aspect above.
[0013] Fourthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions for performing the method described in the second aspect above.
[0014] The above technical solution addresses the technical problem that manual diagnostic methods for high-pressure ionization chamber gamma radiation monitoring devices are insufficient to meet the demands for rapid and real-time device diagnosis. It integrates the ionization chamber detector, programmable high-voltage source, micro-current converter, programmable constant current source, programmable switch, and data acquisition and control system for online self-diagnosis of the high-pressure ionization chamber gamma radiation monitoring device. The device uses a programmable switch to switch between self-diagnosis mode and normal operation mode. In self-diagnosis mode, by injecting a standard current and collecting key parameters, it evaluates the device's performance characteristics in real time, including the impedance performance of the micro-current converter, achieving online automatic diagnosis and parameter calibration of the device's performance. In short, this solution enables the high-pressure ionization chamber gamma radiation monitoring device to complete performance verification and fault diagnosis without manual intervention, effectively ensuring the reliability of radiation monitoring data, improving the automation level of the high-pressure ionization chamber gamma radiation monitoring device, and saving labor and time costs. Attached Figure Description
[0015] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0016] Figure 1 A schematic diagram of a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnostic function according to an embodiment of this application is shown; Figure 2 A flowchart is shown for an online self-diagnostic method of a high-pressure ionization chamber gamma radiation monitoring device according to an embodiment of this application; Figure 3 A flowchart is shown for an online self-diagnostic method of a high-pressure ionization chamber gamma radiation monitoring device according to another embodiment of this application; Figure 4 A block diagram of a computer device according to one embodiment of this application is shown; Figure 5 A block diagram of a computer device according to another embodiment of this application is shown. Detailed Implementation
[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0018] Figure 1 A schematic diagram of a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnostic function according to an embodiment of this application is shown.
[0019] like Figure 1 As shown, a high-pressure ionization chamber gamma radiation monitoring device with online self-diagnosis function according to an embodiment of this application includes: an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system.
[0020] The programmable high-voltage source is connected to the ionization chamber detector and is used to provide the ionization chamber detector with a high operating voltage.
[0021] The microcurrent converter is connected to the ionization chamber detector and is used to convert the weak current output by the ionization chamber detector into a measurable electrical signal.
[0022] The programmable constant current source is connected between the ionization chamber detector and the input terminal of the micro-current converter to generate a micro-current of a predetermined size, and to calibrate and diagnose the impedance parameter performance of the micro-current converter online.
[0023] The programmable switch is connected between the programmable constant current source and the input terminal of the micro current converter. It is used to switch the high-pressure ionization chamber gamma radiation monitoring device between self-diagnostic mode and normal operation mode, so as to control whether the standard current output by the programmable constant current source is injected into the measurement circuit.
[0024] The data acquisition and control system is connected to the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the power supply. The data acquisition and control system sets the output of the programmable high-voltage source to zero, opens the programmable switch, and acquires the first output value and the first supply voltage value of the micro-current converter. Then, it sets the output of the programmable constant current source to a predetermined current value, closes the programmable switch, and acquires the second output value of the micro-current converter. Based on the predetermined current value and the second output value, it determines the impedance parameter of the current measurement circuit. The data acquisition and control system determines whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first, second, and third reference values are all within a first normal threshold range. If the determination result is yes, it sets the programmable switch to open, the programmable high-voltage source to output a normal operating voltage, and acquires the third output value and the second supply voltage value of the micro-current converter. When the difference between the second supply voltage value and the pre-stored supply voltage reference value is within a second normal threshold range, it determines the radiation measurement result based on the third output value and the pre-stored zero-point reference value. If the determination result is no, it outputs a performance abnormality warning message.
[0025] The first output value is the output value of the micro-current converter when the programmable high-voltage source outputs zero and the programmable switch is open; the second output value is the output value of the micro-current converter when the programmable constant current source outputs a predetermined current value and the programmable switch is closed; and the third output value is the output value of the micro-current converter when the programmable switch is open and the programmable high-voltage source outputs a normal operating voltage.
[0026] Therefore, an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system are integrated for online self-diagnosis of a high-pressure ionization chamber gamma radiation monitoring device. The device uses a programmable switch to switch between self-diagnosis mode and normal operation mode. In self-diagnosis mode, by injecting a standard current and collecting key parameters, it evaluates the device's performance characteristics in real time, including the impedance performance of the micro-current converter, achieving online automatic diagnosis and parameter calibration of the device's performance. In short, this solution enables the high-pressure ionization chamber gamma radiation monitoring device to complete performance verification and fault diagnosis without manual intervention, effectively ensuring the reliability of radiation monitoring data, improving the automation level of the high-pressure ionization chamber gamma radiation monitoring device, and saving labor and time costs.
[0027] The microcurrent converter includes: a signal conversion element for converting the weak current output by the ionization chamber detector into a measurable electrical signal, wherein the signal conversion element is a resistive component or a capacitive component, and the measurable electrical signal is a voltage signal or a charge signal; and an amplifier connected in parallel with the signal conversion element for amplifying the voltage signal or converting the charge signal into a frequency signal.
[0028] This structure enables stable acquisition of weak fA-level currents output from the ionization chamber detector. By employing resistors or capacitors as signal conversion elements, it can convert these weak currents, which are difficult to measure directly, into easily processed voltage or charge signals. Simultaneously, the parallel amplifier amplifies or converts the converted minute electrical signal into a frequency signal, effectively improving the signal's anti-interference capability. This ensures the accuracy of subsequent data acquisition results and provides a solid data foundation for the device's self-diagnosis.
[0029] Of course, the device also includes a power supply, which is connected to the ionization chamber detector, the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the data acquisition and control system, for supplying power to the various components of the high-pressure ionization chamber gamma radiation monitoring device.
[0030] Figure 2 A flowchart illustrating an online self-diagnostic method for a high-pressure ionization chamber gamma radiation monitoring device according to an embodiment of this application is shown.
[0031] like Figure 2 As shown, the online self-diagnostic method of a high-pressure ionization chamber gamma radiation monitoring device according to an embodiment of this application includes the following steps: Step 202: Set the output of the programmable high-voltage source to zero and control the programmable switch to disconnect.
[0032] By setting the high-voltage source output to zero and disconnecting the programmable switch, the operating conditions of the ionization chamber detector were cut off, thus returning the measurement system to its zero point. This effectively isolates the radiation signal from interfering with the subsequent self-diagnostic process, ensuring that the acquired zero-point output and power supply voltage accurately reflect the system's power source status, providing valuable foundational data for subsequent self-diagnostics.
[0033] Step 204: Acquire the first output value and the first supply voltage value of the micro-current converter.
[0034] The first output value, also known as the zero-point output value, reflects the characteristic performance of the micro-current converter when there is no input. Simultaneously, the acquired first supply voltage value reflects the initial operating state of the device's internal power supply. By synchronously acquiring these two parameters, a comparison benchmark can be provided for subsequent self-diagnosis.
[0035] Step 206: Set the predetermined current value of the programmable constant current source output and control the programmable switch to close.
[0036] By closing a programmable switch and injecting a known, precise current, the output performance of an ionization chamber detector can be simulated. This process is equivalent to actively generating diagnostic signals to enable self-diagnosis of the current measurement circuit.
[0037] Step 208: Acquire the second output value of the micro current converter, and determine the impedance parameters of the current measurement circuit based on the predetermined current value and the second output value.
[0038] The second output value of the microcurrent converter reflects the response characteristics of the microcurrent converter under a predetermined current value excitation, while the impedance parameter calculated based on the predetermined current value and the second output value reflects the performance of the signal conversion element of the microcurrent converter. The more accurate the impedance parameter calculation, the higher the measurement accuracy of the microcurrent converter.
[0039] Step 210: Determine whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first reference value, second reference value, and third reference value are all within the first normal threshold range.
[0040] By comparing the real-time collected zero-point, voltage, and impedance parameters with preset benchmarks, if the differences between the three parameters and the benchmark values are all within the first normal threshold range, it indicates that the performance of each part of the high-pressure ionization chamber gamma radiation monitoring device is still within the normal cooperative range, thus realizing rapid automatic diagnosis of the health status of the high-pressure ionization chamber gamma radiation monitoring device.
[0041] Step 212: If the judgment result is yes, control the programmable switch to open and set the programmable high voltage source to output normal operating voltage. Collect the third output value and the second supply voltage value of the micro current converter. If the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range, determine the radiation measurement result based on the third output value and the pre-stored zero-point reference value. Otherwise, return to the step of collecting the third output value and the second supply voltage value of the micro current converter until the number of collections reaches the first preset number or the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range, and then stop the collection.
[0042] Furthermore, if the judgment result is negative, return to the step of setting the output of the programmable high-voltage source to zero and controlling the programmable switch to disconnect, until the differences between the first output value, the first supply voltage value, and the impedance parameter and the first reference value, the second reference value, and the third reference value, respectively, are all within the first normal threshold range, or the number of repetitions reaches the second predetermined number. If the number of repetitions reaches the second predetermined number and the judgment result is still negative, a fault prompt message is generated.
[0043] In other words, after the initial diagnosis is successful, the system switches to normal operating mode. At this point, a second diagnosis can be performed, and only if all key parameters are normal will a valid radiation measurement result be output.
[0044] Therefore, by using a programmable switch to switch between self-diagnostic mode and normal operating mode, and by injecting a standard current and collecting key parameters in self-diagnostic mode, the device's performance characteristics, including the impedance performance of the micro-current converter, are evaluated in real time. This enables online automatic diagnosis and parameter calibration of the device's performance. In short, this solution allows the high-pressure ionization chamber gamma radiation monitoring device to complete performance verification and fault diagnosis without manual intervention, effectively ensuring the reliability of radiation monitoring data, improving the automation level of the high-pressure ionization chamber gamma radiation monitoring device, and saving labor and time costs.
[0045] Figure 3 A flowchart illustrating an online self-diagnostic method for a high-pressure ionization chamber gamma radiation monitoring device according to another embodiment of this application is shown.
[0046] like Figure 3As shown, the system first initializes by presetting parameters such as small current output and power supply voltage to establish a baseline for subsequent diagnosis.
[0047] The process then proceeds to the first diagnostic phase.
[0048] First, perform zero-point and power supply diagnostics. The system sets the output voltage of the programmable high-voltage HV1 to 0V, while ensuring that the programmable switch S is in the open state. Under this configuration, there should be no current output from the ionization chamber, and the system then acquires the supply voltage value and the output value of the micro-current converter.
[0049] Next, a performance assessment is performed. Based on the acquired data, the system determines whether the device's performance and status are normal.
[0050] If the result is negative (N), the number of reads is checked three times. If less than three reads are performed, the process returns and the steps of obtaining the power supply voltage value and the output value of the micro-current converter are re-executed, i.e., zero-point and power supply diagnosis, for retry.
[0051] If the problem persists after three retries, an abnormal device performance diagnostic message will be output.
[0052] If the result is yes (Y), the process continues.
[0053] Next, calibration and parameter updates are performed. After confirming normal performance, the system operates with the programmable switch S in the closed state, calculates and saves the resistance and capacitance values, and saves the output data of the voltage and micro-current converter. After calibration, the device enters a normal operation and monitoring cycle.
[0054] During normal measurement, the system sets the programmable high voltage HV1 output detector to normal operating voltage and ensures that the programmable switch S is in the open state, so that the device returns to normal radiation monitoring mode.
[0055] During the result calculation and output stage, the system begins to calculate the output results of the device and determines whether the connection working time has been reached, that is, whether the preset continuous running time has been achieved.
[0056] If the time (N) has not arrived, continue the calculation and output the result, that is, send out the measurement data.
[0057] If the time has elapsed (Y), the process will automatically return to the previous steps and restart the entire self-diagnosis process to achieve periodic performance verification.
[0058] In summary, this process achieves online automatic monitoring and calibration of device performance by periodically switching between diagnostic calibration and normal measurement modes, ensuring that measurement data is always obtained under the premise that the device is in normal condition.
[0059] In another embodiment, this application provides a computer device, which may be a server, and its internal structure diagram may be as follows. Figure 4 As shown, the computer device includes a processor, memory, network interface, and database connected via a system bus. The processor provides computing and control capabilities. The memory includes non-volatile and / or volatile storage media and internal memory. The non-volatile storage media stores the operating system, computer programs, and database. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The network interface is used to communicate with external clients via a network connection. When the computer program is executed by the processor, it can implement the methods described in any of the above embodiments.
[0060] In one embodiment, this application also provides a computer device, which can be a client, and its internal structure diagram can be as follows: Figure 5 As shown, the computer device includes a processor, memory, network interface, display screen, and input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage medium. The network interface is used to communicate with an external server via a network connection. When the computer program is executed by the processor, it can implement the methods described in any of the above embodiments.
[0061] Any of the computer devices described in the embodiments of this application exist in various forms, including but not limited to: (1) Mobile communication devices: These devices are characterized by their mobile communication capabilities and primarily aim to provide voice and data communication. These terminals include smartphones, multimedia phones, feature phones, and low-end phones.
[0062] (2) Ultra-mobile personal computer devices: These devices fall under the category of personal computers, possessing computing and processing capabilities, and generally also have mobile internet access features. These terminals include PDAs, MIDs, and UMPCs, etc.
[0063] (3) Portable entertainment devices: These devices can display and play multimedia content. This category includes: audio and video players, handheld game consoles, e-books, as well as smart toys, wearable devices, and portable car navigation devices.
[0064] (4) Server: A device that provides computing services. The components of a server include a processor, hard disk, memory, system bus, etc. Servers are similar to general computer architectures, but because they need to provide highly reliable services, they have higher requirements in terms of processing power, stability, reliability, security, scalability, and manageability.
[0065] (5) Other electronic devices with data interaction functions.
[0066] Additionally, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which are used to perform the following steps: Set the output of the programmable high-voltage source to zero and control the programmable switch to disconnect; Acquire the first output value and the first supply voltage value of the micro-current converter; Set the predetermined current value of the programmable constant current source output and control the programmable switch to close; Acquire the second output value of the micro current converter, and determine the impedance parameters of the current measurement loop based on the predetermined current value and the second output value; Determine whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first reference value, second reference value, and third reference value are all within the first normal threshold range; If the judgment result is yes, the programmable switch is turned off, and the programmable high voltage source is set to output a normal working voltage. The third output value and the second supply voltage value of the micro current converter are collected. If the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range, the radiation measurement result is determined based on the third output value and the pre-stored zero-point reference value. Otherwise, the process returns to the step of collecting the third output value and the second supply voltage value of the micro current converter until the number of collections reaches the first preset number or the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range.
[0067] It should be noted that the functions or steps that can be implemented by the computer-readable storage medium or computer device described above can be referred to the relevant descriptions in the foregoing method embodiments. To avoid repetition, they will not be described one by one here.
[0068] The technical solution of this application has been described in detail above with reference to the accompanying drawings. This solution integrates an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system for online self-diagnosis of a high-pressure ionization chamber gamma radiation monitoring device. The device uses a programmable switch to switch between self-diagnosis mode and normal operation mode. In self-diagnosis mode, by injecting a standard current and collecting key parameters, it evaluates the device's performance characteristics in real time, including the impedance performance of the micro-current converter, thus achieving online automatic diagnosis and parameter calibration of the device's performance. In short, this solution enables the high-pressure ionization chamber gamma radiation monitoring device to complete performance verification and fault diagnosis without manual intervention, effectively ensuring the reliability of radiation monitoring data, improving the automation level of the high-pressure ionization chamber gamma radiation monitoring device, and saving labor and time costs.
[0069] Depending on the context, the word "if" as used here can be interpreted as "when," "when," "in response to determination," or "in response to detection." Similarly, depending on the context, the phrase "if determination" or "if detection (of the stated condition or event)" can be interpreted as "when determination," "in response to determination," "when detection (of the stated condition or event)," or "in response to detection (of the stated condition or event)."
[0070] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.
[0071] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
[0072] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in a combination of hardware and software functional units.
[0073] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments of the above methods. Any references to memory, storage, databases, or other media used in the embodiments provided in this application can include non-volatile and / or volatile memory. Non-volatile memory may include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory may include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in a variety of forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), dual data rate SDRAM (DDRSDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), RAMbus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.
[0074] The above-described 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 foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should all be included within the protection scope of the present invention.
Claims
1. A high-pressure ionization chamber gamma radiation monitoring device with online self-diagnosis function, characterized in that, include: The system includes an ionization chamber detector, a programmable high-voltage source, a micro-current converter, a programmable constant current source, a programmable switch, and a data acquisition and control system. The programmable high-voltage source is connected to the ionization chamber detector to provide a high operating voltage for the ionization chamber detector; the micro-current converter is connected to the ionization chamber detector to convert the weak current output by the ionization chamber detector into a measurable electrical signal; the programmable constant current source is connected between the ionization chamber detector and the input terminal of the micro-current converter; the programmable switch is connected between the programmable constant current source and the input terminal of the micro-current converter; the data acquisition and control system is connected to the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the power supply, respectively; wherein, The data acquisition and control system sets the output of the programmable high-voltage source to zero, opens the programmable switch, and acquires the first output value and the first supply voltage value of the micro-current converter. Then, it sets the output of the programmable constant current source to a predetermined current value, closes the programmable switch, and acquires the second output value of the micro-current converter. Based on the predetermined current value and the second output value, it determines the impedance parameter of the current measurement circuit. The data acquisition and control system determines whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first, second, and third reference values are all within a first normal threshold range. If the determination result is yes, it sets the programmable switch to open, the programmable high-voltage source to output a normal operating voltage, and acquires the third output value and the second supply voltage value of the micro-current converter. When the difference between the second supply voltage value and the pre-stored supply voltage reference value is within a second normal threshold range, it determines the radiation measurement result based on the third output value and the pre-stored zero-point reference value. If the determination result is no, it outputs a performance abnormality warning message.
2. The apparatus according to claim 1, characterized in that, Also includes: A power supply is connected to the ionization chamber detector, the programmable high-voltage source, the micro-current converter, the programmable constant current source, the programmable switch, and the data acquisition and control system, and is used to supply power to the various components of the high-pressure ionization chamber gamma radiation monitoring device.
3. The apparatus according to claim 1, characterized in that, The microcurrent converter includes: A signal conversion element is used to convert the weak current output by the ionization chamber detector into a measurable electrical signal, wherein the signal conversion element is a resistive component or a capacitive component, and the measurable electrical signal is a voltage signal or a charge signal; An amplifier, connected in parallel with the signal conversion element, is used to amplify the voltage signal or convert the charge signal into a frequency signal.
4. An online self-diagnostic method for a high-pressure ionization chamber gamma radiation monitoring device, characterized in that, The high-pressure ionization chamber gamma radiation monitoring device applied to any one of claims 1 to 3 comprises: Set the output of the programmable high-voltage source to zero and control the programmable switch to disconnect; Acquire the first output value and the first supply voltage value of the micro-current converter; Set the predetermined current value of the programmable constant current source output and control the programmable switch to close; Acquire the second output value of the micro current converter, and determine the impedance parameters of the current measurement loop based on the predetermined current value and the second output value; Determine whether the differences between the first output value, the first supply voltage value, and the impedance parameter and the pre-stored first reference value, second reference value, and third reference value are all within the first normal threshold range; If the judgment result is yes, the programmable switch is turned off, and the programmable high voltage source is set to output a normal working voltage. The third output value and the second supply voltage value of the micro current converter are collected. If the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range, the radiation measurement result is determined based on the third output value and the pre-stored zero-point reference value. Otherwise, the process returns to the step of collecting the third output value and the second supply voltage value of the micro current converter until the number of collections reaches the first preset number or the difference between the second supply voltage value and the pre-stored supply voltage reference value is within the second normal threshold range.
5. The method according to claim 4, characterized in that, Also includes: If the judgment result is negative, return to the step of setting the output of the programmable high voltage source to zero and controlling the programmable switch to disconnect, until the differences between the first output value, the first power supply voltage value, and the impedance parameter and the first reference value, the second reference value, and the third reference value are all within the first normal threshold range or the number of repetitions reaches the second predetermined number of times; If the number of repetitions reaches a second predetermined number and the judgment result is still negative, a fault prompt message is generated.
6. The method according to claim 4, characterized in that, Before setting the output of the programmable high-voltage source to zero and controlling the programmable switch to disconnect, the method further includes: At specified time intervals, the system enters a self-diagnostic state, which allows it to proceed with the steps of setting the output of the programmable high-voltage source to zero and controlling the programmable switch to disconnect.
7. A computer device, characterized in that, include: At least one processor; And, a memory communicatively connected to the at least one processor; The memory stores instructions executable by the at least one processor, the instructions being configured to cause the processor to perform the method described in any one of claims 4 to 6.
8. A computer-readable storage medium, characterized in that, The device stores computer-executable instructions configured to perform the method as described in any one of claims 4 to 6.