Method, device and equipment for monitoring health state of ultrashort wave power amplifier equipment and medium

Abstract

The invention discloses a method, device, equipment and medium for monitoring the health state of ultrashort wave power amplifier equipment, and relates to the technical field of avionics equipment.The method comprises the steps that key signals of the ultrashort wave power amplifier equipment are analyzed, the main fault mode of the ultrashort wave power amplifier equipment is determined, and based on the key signals and the main fault mode, the layout of monitoring points is designed to monitor the health state of the ultrashort wave power amplifier equipment; the method comprises the following steps: monitoring a monitoring point, calculating the detection rate of a main fault mode corresponding to the monitoring point, carrying out fault detection on the monitoring point to determine the change characteristic of a monitored parameter, carrying out false alarm prevention setting according to the change characteristic of the parameter, constructing a health baseline table, and setting a fault reporting process which comprises a power-on BIT, a period BIT and a self-checking process of starting the BIT. The health state information meeting the health baseline table in the ultra-short wave power amplifier equipment is reported through the bus, so that the influence of each input signal on an output signal is clear, a key signal is found out, a basis is provided for equipment monitoring point design, and the problem of over-design of a test point is avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of avionics equipment, and in particular to a method, device, equipment and medium for monitoring the health status of ultrashort wave power amplifier equipment. Background Art

[0002] With the rapid development of electronic information technology, large-scale, complex avionics systems have emerged, capable of carrying out diverse combat missions and integrating various radio frequency sensor functions. These systems generally adopt a highly integrated, modular, and universal open system architecture, characterized by innovative technology, large scale, complex signal interconnection, and high circuit module integration.

[0003] Ultra-short wave (UHF) power amplifiers are a crucial component of avionics systems, primarily performing VHF / UHF RF signal AM modulation, power amplification and filtering, transmit / receive switching, receive pre-processing, and various control and protection functions. They can be used in conjunction with avionics systems to implement UHF voice communications and UHF data link transmission. Driven by the system's integrated and highly integrated nature, UHF power amplifiers utilize a highly integrated circuit layout, resulting in structural heat dissipation design difficulties and insufficient space for hardware test circuit design. This makes traditional hardware-based testability designs unable to meet the testing requirements for UHF power amplifiers in complex scenarios. Therefore, there is an urgent need to improve the monitoring capabilities of UHF power amplifiers. Summary of the Invention

[0004] In view of the above problems, the present invention provides a method, device, equipment and medium for monitoring the health status of ultra-short wave power amplifier equipment, so as to improve the monitoring accuracy of the ultra-short wave power amplifier equipment status and realize coverage detection of test parameters under complex working conditions.

[0005] In a first aspect, an embodiment of the present invention provides a method for monitoring the health status of an ultrashort wave power amplifier device, the method comprising: Analyzing key signals of an ultrashort wave power amplifier device and determining a major failure mode of the ultrashort wave power amplifier device; Based on the key signals and main failure modes, design a monitoring point layout, and calculate the detection rate of the main failure modes corresponding to the monitoring points; Performing fault detection on the monitoring point to determine the change characteristics of the monitored parameters, and performing false alarm prevention settings based on the change characteristics of the parameters; Constructing a health baseline table, wherein the health baseline table includes at least one of a BIT test item name, a test number, a test timing, a test result type, a filter type, a threshold, a retest number, a filter time, an accuracy, a value range, a parameter unit, and a fault-related item; A fault reporting process is set up, including a self-check process of power-on BIT, periodic BIT and startup BIT, and health status information of the ultra-short wave power amplifier device that meets the health baseline table is reported.

[0006] In some embodiments, analyzing the key signals of the ultrashort wave power amplifier device and determining the main failure mode of the ultrashort wave power amplifier device includes: Analyze the input signal set and output signal set of the ultra-short wave power amplifier device; Establishing a mapping relationship between each input signal in the input signal set and each output signal in the output signal set; When the input signal affects the output signal, the input signal affecting the output signal is classified into an input signal subset, wherein the input signal subset is used as a key signal; The main failure modes corresponding to the key signals in the ultrashort wave power amplifier device are determined based on the preset standard analysis.

[0007] In some embodiments, designing a monitoring point layout based on the key signals and the main failure modes, and calculating the detection rate of the main failure modes corresponding to the monitoring points, includes: Setting monitoring points for the input signal subset and the output signal based on the main failure mode and key signal analysis results; Define the module failure rate, failure mode and its frequency ratio in the ultra-short wave power amplifier equipment, and calculate the failure rate of the main failure mode; The failure rates of the detectable failure modes and the total failure rate of all failure modes are counted, and the detection rate of the main failure mode corresponding to the monitoring point is calculated.

[0008] In some embodiments, performing false alarm prevention settings according to the change characteristics of the parameters includes: When it is determined based on the variation characteristics of the parameters that the working state of the ultrashort wave power amplifier device is unstable, a delayed judgment process is performed on the false alarm caused by the unstable working state; When it is determined based on the variation characteristics of the parameters that the ultrashort wave power amplifier device generates a singular value, a filtering process is performed on the false alarm caused by the singular value.

[0009] In some embodiments, the filtering processing or delayed judgment processing includes collecting monitoring parameters at a preset sampling clock frequency, collecting multiple times continuously, removing the maximum and minimum values ​​and calculating the average value, and performing fault judgment based on M / N judgment logic, where M represents the number of fault judgments and N represents the total number of tests.

[0010] In some embodiments, the setting of the fault reporting process includes: The power-on BIT is a reporting process that is executed after the device is powered on and the self-test results are stored in the memory; The periodic BIT is to detect the operating status of the equipment at fixed time intervals, and the self-test results are updated in real time and then the reporting process is executed; The BIT startup is that after receiving the BIT startup instruction, the device enters the maintenance mode, covers all detection items, completes the self-test, and executes the reporting process.

[0011] In some embodiments, the reported health status information includes a message header and a message body, wherein the message header includes the type of message and the message body includes specific BIT information transmitted back.

[0012] In a second aspect, an embodiment of the present invention provides a device for monitoring the health status of an ultrashort wave power amplifier device, comprising: An analysis module, configured to analyze key signals of an ultrashort wave power amplifier device and determine a main failure mode of the ultrashort wave power amplifier device; A calculation module, configured to design a monitoring point layout based on the key signals and the main failure modes, and calculate a detection rate of the main failure modes corresponding to the monitoring points; A monitoring module, configured to perform fault detection on the monitoring point to determine a change characteristic of the monitored parameter, and perform false alarm prevention settings based on the change characteristic of the parameter; A construction module is configured to construct a health baseline table, wherein the health baseline table includes at least one of a BIT test item name, a test number, a test timing, a test result type, a filter type, a threshold, a retest number, a filter time, an accuracy, a value range, a parameter unit, and a fault-related item; The reporting module is used to set the fault reporting process, including the self-test process of power-on BIT, periodic BIT and startup BIT, and report the health status information of the ultra-short wave power amplifier device that meets the health baseline table through the bus.

[0013] In a third aspect, an embodiment of the present application provides an electronic device, comprising a memory and a processor, wherein the memory stores a program code that can be run on the processor, and when the program code is executed by the processor, a method for monitoring the health status of an ultrashort wave power amplifier device as described in any embodiment of the first aspect is implemented.

[0014] In a fourth aspect, an embodiment of the present application provides a computer storage medium storing one or more programs, which can be executed by the electronic device as described in the third aspect to implement the method for monitoring the health status of the ultrashort wave power amplifier device as described in any embodiment of the first aspect.

[0015] The embodiments of the present invention provide a method, device, equipment and medium for monitoring the health status of an ultra-short wave power amplifier device. The method analyzes the key signals of the ultra-short wave power amplifier device and determines the main fault mode of the ultra-short wave power amplifier device. Based on the key signals and the main fault mode, the monitoring point layout is designed, and the detection rate of the main fault mode corresponding to the monitoring point is calculated. The monitoring point is fault detected to determine the change characteristics of the monitored parameters. According to the change characteristics of the parameters, false alarm prevention settings are made to construct a health baseline table, wherein the health baseline table includes BIT test item name, test number, test time, test result type, filter type, threshold, retest number, filter type, and so on. At least one of time, accuracy, numerical range, parameter unit and fault-related items is set, and a fault reporting process is set, including the self-test process of power-on BIT, periodic BIT and startup BIT, and the health status information of the ultra-short wave power amplifier equipment that meets the health baseline table is reported through the bus, which is conducive to clarifying the impact of each input signal on the output signal, finding the key signal, providing a basis for the design of equipment monitoring points, avoiding the problem of over-design of test points, and refining the collection and processing process of ultra-short wave power amplifier equipment signals, which is conducive to the later investigation of abnormal problems, and defining the composition format of the information uploaded by the equipment, creating conditions for the quantitative evaluation of the detection capability of ultra-short wave power amplifier equipment.

[0016] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, the present invention will be described in more detail based on embodiments with reference to the accompanying drawings.

[0018] Figure 1 A schematic flow chart of an exemplary method for monitoring the health status of an ultrashort wave power amplifier device proposed in one embodiment of the present invention is shown; Figure 2 A block diagram showing the principle of an exemplary ultrashort wave power amplifier device proposed in one embodiment of the present invention is shown; Figure 3 A schematic diagram showing the locations of test points of an exemplary ultrashort wave power amplifier device proposed in one embodiment of the present invention is shown; Figure 4 FIG2 shows a schematic diagram of an exemplary voltage monitoring test point implementation proposed in an embodiment of the present invention; Figure 5 A schematic diagram illustrating an exemplary temperature monitoring test point implementation proposed in one embodiment of the present invention is shown; Figure 6 FIG2 shows a schematic diagram of an exemplary 485 bus monitoring test point implementation proposed in one embodiment of the present invention; Figure 7 FIG2 shows a schematic diagram of an exemplary implementation of a transmission standing wave monitoring test point proposed in an embodiment of the present invention; Figure 8 FIG2 shows a schematic diagram of an exemplary transmit output power monitoring test point implementation proposed in an embodiment of the present invention; Figure 9 FIG2 shows a schematic diagram of an exemplary implementation of an excitation amplitude monitoring test point proposed in an embodiment of the present invention; Figure 10 A schematic diagram of an exemplary BIT work information reporting process proposed in one embodiment of the present invention is shown; Figure 11 A structural block diagram of a device for monitoring the health status of an ultrashort wave power amplifier device according to an embodiment of the present invention is shown; Figure 12 A structural block diagram of an electronic device for executing a method for monitoring the health status of an ultrashort wave power amplifier device according to an embodiment of the present application is shown; Figure 13 An exemplary health baseline representation proposed in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0019] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0020] According to the inventor's research, the following problems exist in the design of the detection method for ultrashort wave power amplifier equipment failure: 1. The switching of multiple functional modes and dynamic reconstruction in the ultra-short wave band leads to complex switching of digital and RF signal routing, which increases the uncertainty of fault propagation. Combined with the randomness and intermittent nature of electronic product failures, the accuracy of fault detection in ultra-short wave power amplifier equipment is reduced. Detection design that only considers the device's own circuits is difficult to meet application requirements, and detection design needs to be considered from the signal level.

[0021] 2. There is a lack of a unified reference template for the detection point design, detection principles, element composition, and information reporting process of ultra-short wave power amplifier equipment, which makes it difficult to quantitatively evaluate the equipment fault detection rate and troubleshoot problems.

[0022] In response to the above problems, the applicant has proposed a method, device, equipment and medium for monitoring the health status of ultra-short wave power amplifier equipment. Among them, the method for monitoring the health status of ultra-short wave power amplifier equipment addresses the problems existing in the field detection of ultra-short wave power amplifier equipment, and provides a detection method for accurately monitoring the status of ultra-short wave power amplifier equipment and fully covering the test parameters under complex working conditions. By clarifying the impact of each input signal on the output signal, the key signal is found, providing a basis for the setting of equipment monitoring points, avoiding the problem of over-design of test points, clarifying the signal acquisition and processing process of ultra-short wave power amplifier equipment, which is conducive to the later investigation of abnormal problems and providing basic data for the quantitative evaluation of the detection capability of ultra-short wave power amplifier equipment.

[0023] The method for monitoring the health status of the ultrashort wave power amplifier device will be described in detail in subsequent embodiments.

[0024] The following describes the application scenarios of the method for monitoring the health status of an ultrashort wave power amplifier device provided by an embodiment of the present invention: See also Figure 1 , Figure 1 This is a flow chart of a method for monitoring the health status of an ultra-short wave power amplifier device provided in an embodiment of the present invention. In this embodiment, the method for monitoring the health status of an ultra-short wave power amplifier device can be applied to Figure 11 The ultrashort wave power amplifier assembly multi-parameter fusion health baseline construction device 300 is shown in FIG. Figure 12 In the electronic device 200 shown, the principle block diagram of the ultrashort wave power amplifier device is shown in FIG. Figure 2 As shown, the test point location of the ultra-short wave power amplifier equipment refers to Figure 3 TP1-TP7 points shown below, Figure 1 The process shown is described in detail. The method for monitoring the health status of the ultrashort wave power amplifier device may include S110 to S150.

[0025] S110: Analyze key signals of the ultrashort wave power amplifier device and determine a main failure mode of the ultrashort wave power amplifier device.

[0026] In an embodiment of the present application, key signals may include key RF and / or control signals, obtain the signal flow direction of the ultra-short wave power amplifier device, and analyze the relationship between the input signal and the output signal. Through functional analysis, the key signals of the ultra-short wave power amplifier device include RF input signals, external transmission signals, antenna receiving signals, external input power supply, RS485 bus control data, receiving input signals, receiving output signals, and standing wave signals.

[0027] Among them, the failure mode analysis object is all signals of the device, and the main failure mode is aimed at the key signals of the device. In this application, the main failure mode is selected to cover the key input and output signals of the device.

[0028] S110 may further include S111 to S114, wherein: S111: Analyze the input signal set and the output signal set of the ultra-short wave power amplifier device.

[0029] In the embodiment of the present application, the input signal set is defined as the set ,gather ,in, Represents an input signal; the output signal set is defined as the set , ,in, Represents an output signal.

[0030] S112: Establishing a mapping relationship between each input signal in the input signal set and each output signal in the output signal set.

[0031] In the embodiment of the present application, the input signal that affects the output signal may include one or more, and its mathematical expression is: .

[0032] S113: When the input signal affects the output signal, classify the input signal affecting the output signal into an input signal subset, wherein the input signal subset is used as a key signal.

[0033] In the embodiment of the present application, the input signal subset is a set , find the input signal that affects the output and put this input signal into the set , count the results of mapping each input signal to the output signal, recorded as , when the input affects the output, the value is +1.

[0034] In this application, relevant detection points are subsequently set for input signals that affect output and external output signals to improve the detection and isolation capabilities of the equipment.

[0035] S114: Analyze and determine a main failure mode corresponding to a key signal in the ultrashort wave power amplifier device based on a preset standard.

[0036] In the embodiment of the present application, the main failure modes of the main signals are analyzed according to the preset standards. It should be noted that the preset standards include GJB / Z1391-2006 "Guidelines for Failure Mode, Effect and Criticality Analysis". In addition, the preset standards may also include other military standards or enterprise standards requirements, which are not limited in this application.

[0037] S120: Based on the key signals and main failure modes, design a monitoring point layout, and calculate the detection rate of the main failure modes corresponding to the monitoring points.

[0038] S120 may further include S121 to S123, wherein: S121: Setting monitoring points for the input signal subset and output signal based on the main failure mode and key signal analysis results.

[0039] In the embodiment of the present application, the monitoring point layout of the ultra-short wave power amplifier device is obtained by analyzing the failure mode and signal of the ultra-short wave power amplifier device.

[0040] S122: Define module failure rates, failure modes, and their frequency ratios in the ultra-short wave power amplifier device, and calculate the failure rates of the failure modes.

[0041] In the embodiment of the present application, after setting the relevant test points, the failure rate of the module is defined as λ, and the failure mode is defined as , the frequency ratio of each failure mode is , get, the failure rate of the fault mode .

[0042] S123: Counting the failure rates of detectable failure modes and the total failure rate of all failure modes, and calculating the detection rate of the main failure mode corresponding to the monitoring point.

[0043] In the embodiment of the present application, after setting relevant test points, the failure rate of the detectable failure mode is calculated and recorded as:

[0044] Here, m represents the number of detectable failure modes.

[0045] The sum of the failure rates for all failure modes is:

[0046] For the set test points, the detection rate of the failure mode is calculated, which is recorded as FDR. The specific expression is the failure rate of the detectable failure mode / the sum of the failure rates of all failure modes multiplied by 100%.

[0047] S130: Performing fault detection on the monitoring point to determine the change characteristics of the monitored parameters, and performing false alarm prevention settings according to the change characteristics of the parameters.

[0048] Among them, S130 includes S131 to S132, among which: S131: When it is determined based on the variation characteristics of the parameters that the working state of the ultrashort wave power amplifier device is unstable, a delayed decision process is performed on a false alarm caused by the unstable working state.

[0049] S132: When it is determined based on the variation characteristics of the parameters that the ultrashort wave power amplifier device generates a singular value, filtering the false alarm caused by the singular value.

[0050] In the embodiments of the present application, the implementation principle of the test points can be analyzed based on the internal test points of the modules in the ultrashort wave power amplifier device. Furthermore, the changing characteristics of the monitoring parameters can be identified in combination with the functional usage, and the corresponding false alarm prevention design can be optimized. False alarms caused by singular values ​​are filtered, and false alarms caused by unstable operating conditions are delayed.

[0051] In some embodiments, filtering processing or delayed judgment processing includes collecting monitoring parameters at a preset sampling clock frequency, collecting multiple times continuously, removing the maximum and minimum values ​​and calculating the average value, and performing fault judgment based on M / N judgment logic, where M represents the number of fault judgments and N represents the total number of tests.

[0052] In the embodiments of this application, the filter type indicates the filtering method used, typically multiple judgments (M / N) or delayed judgments (M_N_T) for averaging. The threshold indicates the number of times the filter is selected during the judgment, i.e., the value of M. The retest count indicates the total number of tests during the filtering process, i.e., the value of N. The filter schedule indicates the delay time during the filtering process, in seconds.

[0053] S140: Construct a health baseline table.

[0054] In the embodiment of the present application, the health baseline table is composed of many elements.

[0055] Among them, the health baseline table includes BIT test item name, test number, test time, test result type, filter type, threshold, retest number, filter time, small threshold validity, small threshold value, large threshold validity, large threshold value, accuracy, value range, parameter unit and fault-related items.

[0056] In the embodiments of this application, exemplary contents are as follows: The BIT test item name indicates the test point of the module, usually represented by the module's signal name or device name.

[0057] The test number is used to number the test items of the module, usually represented by the module abbreviation + Arabic numerals.

[0058] The test timing refers to when the system performs a test on this test item. Test timings are categorized as power-on BIT, periodic BIT, and startup BIT. Power-on BIT refers to the module initiating a BIT self-test after receiving the system power-on command and completing processor initialization. Periodic BIT refers to a BIT self-test performed during module operation without affecting normal system functionality. Startup BIT refers to the module initiating a BIT self-test after receiving a maintenance BIT command from the system. This BIT self-test has the highest control authority over the module and covers all module test items.

[0059] The test result type indicates the content of the test item. The test result type usually contains one or more of the following three elements: test status, test data, and filtering results.

[0060] The filter type indicates the filtering method used, which usually includes multiple M / N judgments or delayed judgment to calculate the average M_N_T.

[0061] The threshold represents the number of times selected when filtering, that is, the value of M.

[0062] The number of retests indicates the total number of tests during filtering, that is, the value of N.

[0063] The filter schedule is the delay time during the filtering process, the unit is S.

[0064] The small threshold validity has two states: "Invalid" and "Valid". If there is test data, enter "Valid". If there is no test data, enter "Invalid".

[0065] The minimum threshold value indicates the minimum fault threshold value when test data exists. If no test data exists, enter "Invalid".

[0066] The maximum threshold validity has two states: "Invalid" and "Valid". If there is test data, enter "Valid". If there is no test data, enter "Invalid".

[0067] The maximum threshold value indicates the maximum value of the fault threshold when test data exists. If there is no test data, enter "Invalid".

[0068] Accuracy indicates the accuracy of the reported test data. If there is no test data, fill in "Invalid".

[0069] The numerical range indicates the possible range of test data to be reported. If there is no test data, enter "Invalid".

[0070] The parameter unit indicates the unit of the reported test data. If there is no test data, fill in "Invalid".

[0071] In this embodiment, by clarifying the composition of the fault information reported by the ultrashort wave power amplifier device, it is convenient for the system to uniformly manage and deeply utilize the test information.

[0072] S150: Setting a fault reporting process, including a self-check process of power-on BIT, periodic BIT and startup BIT, and reporting health status information of the ultra-short wave power amplifier device that meets the health baseline table through the bus.

[0073] In the embodiment of the present application, the fault reporting process includes S151 to S153, wherein: S151: The power-on BIT is to store the self-test results in the memory after the device is powered on and then execute the reporting process.

[0074] S152: The periodic BIT is to detect the operating status of the device at fixed time intervals, and the self-detection result is updated in real time and then the reporting process is executed.

[0075] S153: After receiving the system start BIT instruction, the device enters the maintenance mode, covers all detection items, and then completes the self-test and executes the reporting process.

[0076] In the embodiment of the present application, the BIT process of the ultra-short wave power amplifier device is divided into three types: power-on BIT, periodic BIT, and startup BIT.

[0077] After the device is powered on, it starts the power-on BIT self-test. The results of the power-on BIT self-test are stored in the FLASH and reported to the system through the RS485 bus.

[0078] After the power-on self-test is completed, the device automatically enters the periodic BIT, which checks the device's operating status at 5-second intervals. The self-test results are updated in real time and reported to the system via the RS485 bus.

[0079] The device does not perform normal work tasks during the startup BIT. After receiving the system startup BIT command, the device enters maintenance mode and begins to execute the startup BIT. After the self-test is completed, the self-test results are reported to the system via the RS485 bus.

[0080] In some implementations, the reported health status information includes a message header and a message body, wherein the message header includes the message type, and the message body includes specific BIT information transmitted back.

[0081] The specific implementation methods of this application during the application process are as follows: S1: Analyze the key RF / control signals of the ultra-short wave power amplifier equipment and obtain the main failure modes of the equipment; For details, see Figure 2 The block diagram of the ultra-short wave power amplifier device shown in the figure shows that the ultra-short wave is an important component of the CNI subsystem, and mainly completes VHF / UHF band RF signal AM modulation, power amplification and filtering, transmit and receive switching, receive pre-processing and various control and protection functions.

[0082] The ultra-short wave power amplifier device consists of peripheral circuits such as power processing unit, power interface control unit, power amplifier unit, frequency hopping transceiver component, etc.

[0083] During transmission, the RF signal enters the preamplifier unit for pre-amplification, then enters the final preamplifier stage for high-signal amplification. The amplified RF power signal is fed into the filter unit of the frequency-hopping transceiver assembly for filtering harmonic and remote spurious signals. It then passes through a directional coupler, antenna selector switch, and transceiver switching circuit, and is output from the antenna via a relay.

[0084] During reception: the receiving signal enters the antenna port, the transceiver switch selects the receiving branch, enters the RF front-end unit, undergoes receiving filtering, limiting and low-noise amplification, and then outputs to the subsequent module.

[0085] Through functional analysis, the key signals of the ultra-short wave power amplifier equipment include RF input signal, external transmission signal, antenna receiving signal, external input power, RS485 bus control data, receiving input signal, receiving output signal, and standing wave signal.

[0086] Define all input signals as the set ,gather ,in, Represents an input signal. All output signals are defined as the set , ,in, Represents an output signal.

[0087] There may be one or more input signals that affect the output signal, which can be expressed mathematically as follows:

[0088] Count the results of mapping each input signal to the output signal, recorded as When the input affects the output, the value is +1.

[0089] Identify input signals that affect output and place them in the SPF collection. The system then sets up detection points for these input signals and external output signals, improving the device's detection and isolation capabilities.

[0090] According to GJB / Z1391-2006, "Guidelines for Failure Mode, Effect, and Criticality Analysis," the failure modes of major signals (critical signals) were analyzed. The main failure modes of the ultrashort wave power amplifier device are shown in Table 1, which is an analysis table of major failure modes and test methods. It should be noted that the failure mode analysis targets all signals of the device, and the main failure modes target the device's critical signals. In this application, the main failure modes are selected to cover the device's critical input and output signals.

[0091]

[0092] Table 1 S2: Design the monitoring point layout based on the key signals and main failure modes of the ultra-short wave power amplifier equipment, and obtain the main monitoring items and parameters of the ultra-short wave power amplifier equipment.

[0093] By analyzing the failure mode and signal of the ultra-short wave power amplifier equipment, the test point layout of the ultra-short wave power amplifier equipment is obtained. Figure 3 shown.

[0094] The ultra-short wave power amplifier equipment mainly sets the following detection points: TP1: transmission power monitoring; TP2: transmission standing wave protection monitoring; TP3: 28V input voltage monitoring; TP4: temperature monitoring; TP5: RS485 bus monitoring; TP6: excitation amplitude detection; TP7: secondary conversion voltage monitoring.

[0095] The ultra-short wave power amplifier device needs to transmit its own information to the system through the RS485 bus. By detecting the RS485 bus, the interaction status between the device and the system can be determined.

[0096] The device needs an external antenna to output the transmission signal in the system. In order to isolate the fault of the antenna and the power amplifier equipment, a standing wave detection point is set in the device.

[0097] The 28V voltage is directly provided by the outside world. If the 28V voltage fails, it will affect the stability of the ultra-short wave power amplifier. By monitoring the 28V input voltage, you can help determine whether the external voltage is normal.

[0098] Temperature is one of the important parameters that affect the working stability of ultra-short wave power amplifier equipment, and monitoring points need to be set.

[0099] Ultra-short wave power amplifier equipment contains a large number of switches, filters, etc. By monitoring the secondary conversion voltage, the working status of the internal components can be effectively judged.

[0100] The excitation signal is an external input. When there is no excitation signal or the input is too low, the ultra-short wave power amplifier device will not transmit. The fault can be effectively located by detecting the amplitude of the excitation signal.

[0101] Power transmission is the main function of this device. By detecting the size of the power transmission signal, the working status of the device can be effectively judged.

[0102] The failure rate of the module is λ, and the failure mode is defined as , the frequency ratio of each failure mode is .

[0103] Failure rate of failure mode .

[0104] After setting the relevant test points, the failure rate of the detectable failure mode is calculated and recorded as:

[0105] Here, m represents the number of detectable failure modes.

[0106] The sum of the failure rates for all failure modes is:

[0107] For the set test points, the detection rate of the fault mode is calculated, recorded as FDR. The specific expression is: failure rate of detectable fault mode / the sum of the failure rates of all fault modes multiplied by 100%. For the relevant test points set for the ultra-short wave power amplifier equipment, FDR=0.9.

[0108] S3: Fault detection and false alarm prevention design, including a schematic diagram of the detection implementation principle and a description of the false alarm prevention design.

[0109] For the 6 types of test points set up, combine the implementation principles to complete the design description of the test points.

[0110] See Figure 4 The input voltage monitoring implementation schematic shown in the figure is Figure 4 middle: After the external 28V is input to the ultra-short wave power amplifier device, a resistor is connected in series at the input end to divide the voltage, and the divided voltage value is sent to the voltage acquisition circuit. The collected voltage value is sent to the ADC for sampling. The FPGA judges the sampled voltage and reports the judgment result to the system through the RS485 bus.

[0111] To prevent false alarms, the device samples at a 100 MHz clock, sets the sampling interval to 20 ms, collects data 10 times continuously, removes the maximum and minimum values, calculates the average value, makes a judgment, and reports it.

[0112] See Figure 5 The temperature monitoring implementation schematic diagram shown in the figure is as follows: Figure 5 middle: The ultra-short wave power amplifier device is equipped with a temperature sensor near the power tube. The temperature sensor transmits temperature data to the FPGA through the I2C bus. The FPGA samples and processes the temperature data through its own XADC, and reports the processed temperature value and temperature status to the system.

[0113] To prevent false alarms, the FPGA samples at a 50Mhz clock, sets the sampling interval to 20ms, collects data three times in a row, calculates the average value, makes a judgment, and reports it.

[0114] See Figure 6 The 485 bus monitoring implementation schematic diagram shown in the figure is as follows: Figure 6 middle: The ultra-short wave power amplifier communicates with the system via the RS485 bus. The system issues commands in a 4-second cycle. The FPGA receives the information, parses it, and responds to the system with an ICD message. If the ICD protocol is correctly parsed and an ACK is returned, the RS485 communication is considered normal. If the ICD protocol cannot be correctly parsed, a NAK is returned. If a NAK is returned, the system initiates a retransmission, retransmitting the message three times. If no response is received, to prevent false alarms on the RS485 bus, three consecutive RS485 no responses are considered an RS485 communication failure.

[0115] See Figure 7 The schematic diagram of the transmitter standing wave monitoring is shown in the figure. Figure 7 middle: Fault Detection Logic: When the ultra-short wave power amplifier is transmitting, standing wave protection is implemented through hardware and software calculation of standing waves. The high-power transmit signal enters the directional coupler, where it couples and detects the signal, outputting a forward detection voltage FD and a reverse detection voltage RD, which are then sent to the power interface control circuit. The FD and RD signals are amplified and fed directly to the ADC sampling circuit. The ADC operates at a 50 MHz sampling clock and samples data in real time. The current transmission standing wave is calculated from the FD and RD values. If the standing wave value exceeds 3, the signal is considered excessive, and PTT transmission is stopped, implementing standing wave protection.

[0116] The other FD and RD signals are sent to the hardware standing wave protection circuit, and the size of the standing wave is determined by amplification and comparison through the operational amplifier. When the standing wave is too large, the hardware circuit starts the standing wave protection, the RF loop attenuation is maximum, and the transmission has no output power. At the same time, the hardware standing wave protection circuit reports the transmission power fault indication and standing wave indication to the FPGA, and then reports it to the system through the 485 bus.

[0117] Detection Time: Data collection begins 50ms after the transmitter is in the transmitting state, and is collected every 10ms. Data is not collected during the receiving state. The SWR is calculated, with a 5-to-3 ratio to prevent false alarms. When the SWR value is greater than 4, transmission is disabled. When both forward and reverse detection are less than 100mV, the SWR value is meaningless and is set to 1.1. When forward detection equals reverse detection and is greater than 100mV, the SWR value reaches 20, disabling transmission. The above process restarts after the next valid transmission. Data is not collected during the receiving state.

[0118] See Figure 8 The transmit output power monitoring test point implementation schematic diagram shown in the figure is as follows: Figure 8 middle: Fault Detection Logic: When the ultra-short wave power amplifier is transmitting, the high-power signal output by the amplifier is filtered by a frequency-hopping filter and then fed into a directional coupler. After coupling and detection, the directional coupler outputs a forward detection voltage FD and a reverse detection voltage RD. The FD and RD voltage signals are fed to the power interface control circuit, amplified, and directly fed to the ADC sampling circuit for real-time sampling. The current transmit power status can be determined by observing the FD and RD values. Simultaneously, the FD signal is fed into a control loop for comparison with a reference voltage (0.4V). If the voltage falls below the reference voltage, the hardware circuitry reports a transmit power fault indication to the FPGA, which then reports it to the system via the 485 bus.

[0119] Ultra-shortwave (UHF) power amplifiers are used for UHF voice communications and UHF data link transmission. When transmitting in digital transmission mode, the minimum packet duration is approximately 5ms. To prevent false triggering due to spatial interference and short-duration PTT (Push-Through Telephone Telephone) triggering, the transmit output power detection time is set to: After PTT is valid in the transmitting state, data is collected every 1ms, starting 50ms after the PTT is valid. Data is collected using a 10-to-6 ratio. Data is not collected in the receiving state. If a fault is detected, transmission is disabled. The above process restarts after the next valid transmission.

[0120] See Figure 9 The schematic diagram of the excitation amplitude monitoring implementation is shown in the figure. Figure 9 middle: Fault diagnosis logic: In the transmitting state, a -5dBm excitation signal is normally input to the ultrashort wave power amplifier. The signal is detected by the directional coupler and the output excitation detection voltage is sent to the power interface control circuit. After amplification, it is directly sampled in real time by the ADC sampling circuit. By detecting the excitation detection voltage, it can be determined whether the current input excitation is normal. When the excitation is less than -10dBm (corresponding to an excitation detection voltage of 0.47V), the maximum output power of the power amplifier is less than 20W, indicating that the transmitting state is abnormal. The FPGA reports the system excitation fault via the 485 bus.

[0121] Detection sampling time: Start sampling 1ms after the emission state, collect data every 1ms, and use 5 to judge 3 to prevent false alarms.

[0122] S4: Construct health baseline table.

[0123] In this embodiment, the fault information reported by the ultrashort wave power amplifier device is clearly defined, which facilitates the unified management and in-depth utilization of the test information by the system. Figure 13 The health baseline shown is for illustrative purposes only.

[0124] In this step, the health baseline table consists of many elements, including BIT test item name, test number, test time, test result type, etc.

[0125] The BIT test item name indicates the test point of the module, usually represented by the module's signal name or device name.

[0126] The test number is used to number the test items of the module, usually represented by the module abbreviation + Arabic numerals.

[0127] The test timing refers to when the system performs a test on this test item. Test timings are categorized as power-on BIT, periodic BIT, and startup BIT. Power-on BIT refers to the module initiating a BIT self-test after receiving the system power-on command and completing processor initialization. Periodic BIT refers to a BIT self-test performed during module operation without affecting normal system functionality. Startup BIT refers to the module initiating a BIT self-test after receiving a maintenance BIT command from the system. This BIT self-test has the highest control authority over the module and covers all module test items.

[0128] The test result type indicates the content of the test item. The test result type usually contains one or more of the following three elements: test status, test data, and filtering results.

[0129] The filter type indicates the filtering method used, which usually includes multiple M / N judgments or delayed judgment to calculate the average M_N_T.

[0130] The threshold represents the number of times selected when filtering, that is, the value of M.

[0131] The number of retests indicates the total number of tests during filtering, that is, the value of N.

[0132] The filter schedule is the delay time during the filtering process, the unit is S.

[0133] The small threshold validity has two states: "Invalid" and "Valid". If there is test data, enter "Valid". If there is no test data, enter "Invalid".

[0134] The minimum threshold value indicates the minimum fault threshold value when test data exists. If no test data exists, enter "Invalid".

[0135] The maximum threshold validity has two states: "Invalid" and "Valid". If there is test data, enter "Valid". If there is no test data, enter "Invalid".

[0136] The maximum threshold value indicates the maximum value of the fault threshold when test data exists. If there is no test data, enter "Invalid".

[0137] Accuracy indicates the accuracy of the reported test data. If there is no test data, fill in "Invalid".

[0138] The numerical range indicates the possible range of test data to be reported. If there is no test data, enter "Invalid".

[0139] The parameter unit indicates the unit of the reported test data. If there is no test data, fill in "Invalid".

[0140] Fault association items indicate the relationship between module test items and the module's overall health status. If a failure in a test item affects the module's primary function, enter 1 to indicate that a failure in this test item will cause the module's overall health status to report a fault. If a failure in this test item does not affect the module's primary function, enter 2 to indicate that a failure in this test item will cause the module's overall health status to report an alarm.

[0141] S5: Fault reporting process and interface design, including BIT flow chart and ICD interface table.

[0142] See Figure 10 The BIT work information reporting process diagram shown is as follows: Figure 10 middle: The BIT process of ultra-short wave power amplifier equipment is divided into three types: power-on BIT, cycle BIT, and startup BIT.

[0143] After the device is powered on, it starts the power-on BIT self-test. The results of the power-on BIT self-test are stored in the FLASH and reported to the system through the RS485 bus.

[0144] After the power-on self-test is completed, the device automatically enters the periodic BIT, which checks the device's operating status at 5-second intervals. The self-test results are updated in real time and reported to the system via the RS485 bus.

[0145] The device does not perform normal work tasks during the startup BIT. After receiving the system startup BIT command, the device enters maintenance mode and begins to execute the startup BIT. After the self-test is completed, the self-test results are reported to the system via the RS485 bus.

[0146] Based on the health baseline table information, the returned bit information consists of a summary bit and a detailed bit. The summary bit describes the returned test status. A value of "0" indicates a normal test item, while a value of "1" indicates a failure. The test status occupies one bit of byte space in the returned information. The detailed bit describes the returned test value. The byte space is determined by the precision, range, and presence or absence of a sign bit.

[0147] Specifically, the returned message header and message body can be found in Table 2:

[0148] Table 2 In summary, the present invention addresses the complexity of switching between multiple functional modes and dynamic reconstruction in the ultra-short wave frequency band found in the research, which increases the uncertainty of fault propagation and superimposes the randomness and intermittent characteristics of electronic product failures, resulting in a decrease in the accuracy of fault detection in ultra-short wave power amplifier equipment. The detection design that only considers the equipment's own circuits is difficult to meet application requirements, and it is necessary to consider the detection design problem from the signal level. By constructing a signal analysis design to clarify the impact of each input signal on the output signal, identify key signals, and provide a basis for setting up equipment monitoring points, avoiding the problem of over-design of test points.

[0149] In view of the lack of a unified reference template for the detection point design, detection principle, element composition, and information reporting process of ultra-short wave power amplifier equipment found in the study, there is a certain difficulty in quantitatively evaluating the equipment fault detection rate and troubleshooting problems. By clarifying the signal collection and processing process of ultra-short wave power amplifier equipment, it is conducive to the subsequent troubleshooting of abnormal problems and provides basic data for the quantitative evaluation of the detection capability of ultra-short wave power amplifier equipment.

[0150] See also Figure 11 , Figure 11 The present invention provides a structural block diagram of a device for monitoring the health status of an ultrashort wave power amplifier device, comprising: an analysis module 310, a calculation module 320, a monitoring module 330, a construction module 340, and a reporting module 350, wherein: The analysis module 310 is used to analyze key signals of the ultra-short wave power amplifier device and determine the main failure mode of the ultra-short wave power amplifier device.

[0151] The calculation module 320 is used to design a monitoring point layout based on the key signals and the main failure modes, and calculate the detection rate of the main failure modes corresponding to the monitoring points.

[0152] The monitoring module 330 is configured to perform fault detection on the monitoring point to determine the change characteristics of the monitored parameters, and perform false alarm prevention settings based on the change characteristics of the parameters.

[0153] Construction module 340 is used to construct a health baseline table, wherein the health baseline table includes at least one of the BIT test item name, test number, test timing, test result type, filter type, threshold, retest number, filter time, accuracy, numerical range, parameter unit and fault-related items.

[0154] The reporting module 350 is used to set the fault reporting process, including the self-test process of power-on BIT, periodic BIT and startup BIT, and report the health status information of the ultra-short wave power amplifier device that meets the health baseline table through the bus.

[0155] It should be noted that the device embodiment of the present invention corresponds to the aforementioned method embodiment. The specific principles in the device embodiment can be found in the contents of the aforementioned method embodiment, which will not be repeated here.

[0156] In several embodiments provided in this embodiment, the coupling between modules may be electrical, mechanical or other forms of coupling.

[0157] In addition, the functional modules in various embodiments of the present invention may be integrated into a single processing module, or each module may exist physically separately, or two or more modules may be integrated into a single module. The aforementioned integrated modules may be implemented in the form of hardware or software functional modules.

[0158] See also Figure 12 , Figure 12 The present invention provides a structural block diagram of an electronic device 200 that can execute the above-mentioned method for monitoring the health status of an ultrashort wave power amplifier device. The electronic device 200 can be a smart phone, tablet computer, computer, portable computer or other device.

[0159] The electronic device 200 further includes a processor 202 and a memory 204 . The memory 204 stores a program that can execute the contents of the aforementioned embodiments, and the processor 202 can execute the program stored in the memory 204 .

[0160] The processor 202 may include one or more cores for processing data and a message matrix unit. The processor 202 utilizes various interfaces and circuits to connect various components within the electronic device 200. It executes instructions, programs, code sets, or instruction sets stored in the memory 204, and accesses data stored in the memory 204 to perform various functions and process data within the electronic device 200. Optionally, the processor 202 may be implemented in hardware using at least one of a digital signal processing (DSP), a field-programmable gate array (FPGA), and a programmable logic array (PLA). The processor 202 may integrate one or a combination of a central processing unit (CPU), a graphics processing unit (GPU), and a modem (decoder). The CPU primarily handles the operating system, user interface, and application programs; the GPU is responsible for rendering and drawing display content; and the modem handles wireless communications. It is understood that the modem (decoder) may also be implemented independently of the processor using a separate communications chip.

[0161] Memory 204 may include random access memory (RAM) or read-only memory (ROM). Memory 204 may be used to store instructions, programs, code, code sets, or instruction sets. Memory 204 may include a program storage area and a data storage area. The program storage area may store instructions for implementing an operating system, instructions for implementing at least one function (e.g., instructions for a user to obtain a random number), instructions for implementing the various method embodiments described below, and the like. The data storage area may also store data (e.g., random numbers) generated by the terminal during use.

[0162] The electronic device 200 may also include a network module and a screen. The network module is used to receive and transmit electromagnetic waves, converting them into electrical signals, thereby communicating with a communications network or other devices, such as an audio playback device. The network module may include various existing circuit components for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption / decryption chip, a subscriber identity module (SIM) card, memory, and the like. The network module can communicate with various networks such as the Internet, an intranet, or a wireless network, or with other devices via a wireless network. These wireless networks may include cellular telephone networks, wireless local area networks, or metropolitan area networks. The screen can display interface content and facilitate data exchange.

[0163] The embodiments of the present application also provide a computer-readable storage medium in which program codes are stored, and the program codes can be called by a processor to execute the method described in the above method embodiments.

[0164] The computer-readable storage medium may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Alternatively, the computer-readable storage medium includes a non-transitory computer-readable storage medium. The computer-readable storage medium has storage space for program code for executing any of the steps in the above-described method. This program code can be read from or written to one or more computer program products. The program code may be compressed, for example, in a suitable format.

[0165] The present application also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the method for monitoring the health status of an ultrashort wave power amplifier device described in the various optional implementations described above.

[0166] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not drive the essence of the corresponding technical solutions away from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A method for monitoring the health status of an ultrashort wave power amplifier device, characterized in that: The method for monitoring the health status of the ultrashort wave power amplifier device comprises: Analyzing key signals of an ultrashort wave power amplifier device and determining a major failure mode of the ultrashort wave power amplifier device; Based on the key signals and main failure modes, design a monitoring point layout, and calculate the detection rate of the main failure modes corresponding to the monitoring points; Performing fault detection on the monitoring point to determine the change characteristics of the monitored parameters, and performing false alarm prevention settings based on the change characteristics of the parameters; Constructing a health baseline table, wherein the health baseline table includes at least one of a BIT test item name, a test number, a test timing, a test result type, a filter type, a threshold, a retest number, a filter time, an accuracy, a value range, a parameter unit, and a fault-related item; A fault reporting process is set up, including a self-check process of power-on BIT, periodic BIT and startup BIT, and health status information of the ultra-short wave power amplifier device that meets the health baseline table is reported.

2. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 1, characterized in that: The analyzing the key signals of the ultrashort wave power amplifier device and determining the main failure mode of the ultrashort wave power amplifier device includes: Analyze the input signal set and output signal set of the ultra-short wave power amplifier device; Establishing a mapping relationship between each input signal in the input signal set and each output signal in the output signal set; When the input signal affects the output signal, the input signal affecting the output signal is classified into an input signal subset, wherein the input signal subset is used as a key signal; The main failure modes corresponding to the key signals in the ultrashort wave power amplifier device are determined based on the preset standard analysis.

3. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 2, characterized in that: The designing of the monitoring point layout based on the key signals and the main failure modes, and calculating the detection rate of the main failure modes corresponding to the monitoring points, includes: Setting monitoring points for the input signal subset and the output signal based on the main failure mode and key signal analysis results; Define the module failure rate, failure mode and its frequency ratio in ultra-short wave power amplifier equipment, and calculate the failure rate of the failure mode; The failure rates of the detectable failure modes and the total failure rate of all failure modes are counted, and the detection rate of the main failure mode corresponding to the monitoring point is calculated.

4. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 1, characterized in that: The anti-false alarm setting according to the change characteristics of the parameters includes: When it is determined based on the variation characteristics of the parameters that the working state of the ultrashort wave power amplifier device is unstable, a delayed judgment process is performed on the false alarm caused by the unstable working state; When it is determined based on the variation characteristics of the parameters that the ultrashort wave power amplifier device generates a singular value, a filtering process is performed on the false alarm caused by the singular value.

5. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 4, characterized in that: The filtering process or delayed judgment process includes collecting monitoring parameters at a preset sampling clock frequency, collecting multiple times continuously, removing the maximum and minimum values ​​and calculating the average value, and performing fault judgment based on M / N judgment logic, where M represents the number of fault judgments and N represents the total number of tests.

6. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 1, characterized in that: The fault reporting process is configured as follows: The power-on BIT is a reporting process that is executed after the device is powered on and the self-test results are stored in the memory; The periodic BIT is to detect the operating status of the equipment at fixed time intervals, and the self-test results are updated in real time and then the reporting process is executed; The BIT startup is that after receiving the BIT startup instruction, the device enters the maintenance mode, covers all detection items, completes the self-test, and executes the reporting process.

7. The method for monitoring the health status of an ultrashort wave power amplifier device according to claim 6, characterized in that: The reported health status information includes a message header and a message body, wherein the message header includes the type of message and the message body includes the specific BIT information returned.

8. A device for monitoring the health status of an ultrashort wave power amplifier device, characterized in that: The device comprises: An analysis module, configured to analyze key signals of an ultrashort wave power amplifier device and determine a main failure mode of the ultrashort wave power amplifier device; A calculation module, configured to design a monitoring point layout based on the key signals and the main failure modes, and calculate a detection rate of the main failure modes corresponding to the monitoring points; A monitoring module, configured to perform fault detection on the monitoring point to determine a change characteristic of the monitored parameter, and perform false alarm prevention settings based on the change characteristic of the parameter; A construction module is configured to construct a health baseline table, wherein the health baseline table includes at least one of a BIT test item name, a test number, a test timing, a test result type, a filter type, a threshold, a retest number, a filter time, an accuracy, a value range, a parameter unit, and a fault-related item; The reporting module is used to set the fault reporting process, including the self-test process of power-on BIT, periodic BIT and startup BIT, and report the health status information of the ultra-short wave power amplifier device that meets the health baseline table.

9. An electronic device, characterized in that: The electronic device includes a memory and a processor, the memory stores a program code that can be run on the processor, and when the program code is executed by the processor, the method for monitoring the health status of the ultrashort wave power amplifier device according to any one of claims 1 to 7 is implemented.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores program code, and the program code can be called by one or more processors to execute the method for monitoring the health status of an ultrashort wave power amplifier device according to any one of claims 1 to 7.

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