CN-122020234-A - Microwave signal source with health state monitoring function and health state monitoring method

CN122020234ACN 122020234 ACN122020234 ACN 122020234ACN-122020234-A

Abstract

The invention provides a microwave signal source with health state monitoring and a health state monitoring method, which comprises a general microwave channel component, an intermediate frequency processing component, a health state monitoring component and a general microwave signal source platform, wherein the intermediate frequency processing component is connected with the general microwave channel component, the health state monitoring component comprises a hardware state monitoring component and a software state monitoring component, the hardware state monitoring component comprises at least four detectors which respectively receive and monitor detection signals of a radio frequency receiving unit, second intermediate frequency signals output by the radio frequency receiving unit and radio frequency output signals output by a radio frequency transmitting unit, the third intermediate frequency signals received by the radio frequency transmitting unit and radio frequency output signals output by the radio frequency transmitting unit, the software state monitoring component is used for recording communication states and communication commands of a program-controlled computer in real time, communication commands sent by an upper computer and a lower computer and collecting acquisition information of the general microwave channel component, the intermediate frequency processing component and the power supply component, and the general microwave signal source platform comprises a controller, a case, a bus and a power supply component, wherein each component is arranged in the case and performs command interaction with the controller through the bus. The health state monitoring component is integrated in the microwave signal source, can collect characteristic parameters of the working state of the microwave signal source and characteristic parameters of the received signal, and is used for judging the working state of the microwave signal source.

Inventors

REN CHENG
WANG SIYA
Tang Rao
WANG MENGMENG
Nie Xuna
ZHU TIANLIN

Assignees

北京振兴计量测试研究所

Dates

Publication Date: 20260512
Application Date: 20251210

Claims (10)

1. The microwave signal source with health status monitoring function is characterized by comprising a general microwave channel component, an intermediate frequency processing component, a health status monitoring component and a general microwave signal source platform; The universal microwave channel component comprises a radio frequency receiving unit, a radio frequency transmitting unit and a frequency synthesis unit, wherein the radio frequency receiving unit receives a radio frequency input signal and performs down-conversion to obtain a first intermediate frequency signal, the first intermediate frequency signal is divided into two paths, one path of the first intermediate frequency signal is output as a detection signal, and the other path of the first intermediate frequency signal is subjected to down-conversion to obtain a second intermediate frequency signal; The intermediate frequency processing assembly is connected with the universal microwave channel assembly, receives the second intermediate frequency signal output by the radio frequency receiving unit, processes the signal, and outputs a third intermediate frequency signal to the radio frequency transmitting unit; The health state monitoring component comprises a hardware state monitoring component and a software state monitoring component, wherein the hardware state monitoring component comprises at least four detectors for respectively receiving and monitoring detection signals of the radio frequency receiving unit, second intermediate frequency signals output by the radio frequency receiving unit, third intermediate frequency signals received by the radio frequency transmitting unit and radio frequency output signals output by the radio frequency transmitting unit, and the software state monitoring component is used for recording communication states and communication commands of a program-controlled computer, communication commands sent by an upper computer and a lower computer in real time and collecting acquisition information of the universal microwave channel component, the intermediate frequency processing component and the power supply component; The microwave signal source platform comprises a controller, a case, a bus and a power supply component, wherein the universal microwave channel component, the intermediate frequency processing component and the health state monitoring component are arranged in the case, and are used for supplying power through the bus and performing command interaction with the controller.
2. The microwave signal source according to claim 1, wherein the radio frequency receiving unit comprises a first subunit, a second subunit, a power divider, a first detector and a second detector, the first subunit is connected with the power divider, the power divider divides an output signal of the first subunit into two paths, the two paths are respectively input into the second subunit and the first detector, the first subunit is used for down-converting an input signal of radio frequency to obtain a first intermediate frequency signal, the output signal of the second subunit is divided into two paths, one path is output to the intermediate frequency processing assembly, the other path is output to the second detector, and the second subunit is used for mixing and amplifying the first intermediate frequency signal to obtain a second intermediate frequency signal; The input end and the output end of the radio frequency transmitting unit are respectively provided with a third detector and a fourth detector.
3. The microwave signal source of claim 2, wherein the first detector is configured to measure an amplitude, a power, a pulse parameter of the radio frequency input signal; the second detector is used for measuring an intermediate frequency synchronous envelope for generating a second intermediate frequency signal; the third detector is used for measuring the amplitude, the power and the pulse parameters of the third intermediate frequency signal; The fourth detector is used for monitoring amplitude, power and pulse parameters of the radio frequency output signal; calculating the receiving gain and the transmitting gain of the microwave signal source according to the data acquired by the first detector and the fourth detector; Calculating the link gain of the intermediate frequency processing assembly according to the acquired data of the second detector and the third detector; Calculating the guiding delay of the microwave signal source according to the acquired data of the second detector and the fourth detector; and calculating the emission gain of the microwave signal source according to the data acquired by the third detector and the fourth detector.
4. The microwave signal source according to claim 2, wherein the first subunit comprises an attenuator, a low noise amplifier, a first mixer, a first filter amplifier, and a first frequency source connected to the first mixer in sequence, the input end of the radio frequency receiving unit receives a radio frequency input signal, the radio frequency input signal is mixed with the first frequency source output signal by the attenuator and the low noise amplifier and enters the first filter amplifier, and the second subunit comprises a second mixer, a second filter amplifier, and a second frequency source connected to the second mixer, and the second subunit is configured to mix and amplify the first intermediate frequency signal with the second frequency source to obtain a second intermediate frequency signal.
5. The microwave signal source according to claim 2, wherein the radio frequency transmitting unit comprises a third mixer, a third filter amplifier, a fourth mixer, a fourth filter amplifier, an attenuation amplifier, a third frequency source connected to the third mixer, and a fourth frequency source connected to the fourth mixer, which are sequentially connected, and the radio frequency transmitting unit is configured to up-convert a third intermediate frequency signal and output a radio frequency output signal.
6. The microwave signal source according to claim 1, wherein the hardware state monitoring component further comprises an acquisition circuit, and a group of acquisition circuits are respectively arranged in the universal microwave channel component, the intermediate frequency processing component and the power supply component; the acquisition circuit in the power supply assembly is used for monitoring the voltage, the current and the temperature of the whole machine in real time, and the acquisition circuit in the universal microwave channel assembly and the intermediate frequency processing assembly is used for monitoring the voltage, the current and the temperature of the universal microwave channel assembly and the intermediate frequency processing assembly in real time; the frequency synthesizer unit adopts a locking instruction of a phase-locked loop and is used for frequency state monitoring.
7. The microwave signal source of claim 1, wherein the chassis is provided with a sensor for monitoring the chassis fan operating condition; the controller is also used for monitoring the bus communication state and the temperature and humidity of the case; the bus is a PXIe bus or a custom bus.
8. The microwave signal source according to claim 1, wherein the processing of the received second intermediate frequency signal by the intermediate frequency processing component includes real-time acquisition, storage, forwarding, and superimposed doppler and delay processing; And the intermediate frequency processing component receives a third intermediate frequency signal by adopting an ADC (analog to digital converter), measures amplitude, power and pulse parameters, generates a pulse synchronous envelope signal, and is used for comparing with a second detector of the universal microwave channel component to realize secondary comparison of the synchronous envelope signal.
9. A health state monitoring method of a microwave signal source with health state monitoring, characterized in that the microwave signal source according to any one of claims 1 to 8 is adopted, and the health state monitoring method comprises the following steps: s1, starting a microwave signal source, and monitoring and recording the voltage, current state, working temperature and humidity, frequency source locking state, microwave signal source communication state and microwave signal source parameter setting state of the microwave signal source; s2, if the microwave signal source is in an active output mode, entering a step S3, and if the microwave signal source is in a guiding output mode, entering a step S4; S3, monitoring amplitude, power and pulse parameters of a third intermediate frequency signal through a third detector, carrying out abnormal alarm if the power is out of tolerance, and normally recording if the power is normal; Monitoring amplitude, power and pulse parameters of a radio frequency output signal through a fourth detector, comparing a real-time measurement power value of the fourth detector with a calibration value, carrying out abnormal alarm if the power value exceeds the calibration value, and carrying out normal recording if the power value is normal; Calculating the emission gain of the microwave signal source according to the data acquired by the third detector and the fourth detector; s4, measuring amplitude, power and pulse parameters of a radio frequency input signal through a first detector, carrying out abnormal alarm if the received power exceeds a set range, and recording a received power value if the received power is normal; detecting an intermediate frequency synchronous envelope of a second intermediate frequency signal through a second detector to form a pulse synchronous signal which is used for a delay starting point of a microwave signal source; Monitoring amplitude, power and pulse parameters of a third intermediate frequency signal through a third detector, carrying out abnormal alarm if the power is out of tolerance, and recording if the power is normal; Monitoring amplitude, power and pulse parameters of a radio frequency output signal through a fourth detector, comparing a real-time measurement power value of the fourth detector with a calibration value, carrying out abnormal alarm if the power value exceeds the calibration value, and carrying out normal recording if the power value is normal; calculating the receiving gain and the transmitting gain of the microwave signal source according to the data acquired by the first detector and the fourth detector; Calculating the link gain of the intermediate frequency processing assembly according to the acquired data of the second detector and the third detector; Calculating the guiding delay of the microwave signal source according to the acquired data of the second detector and the fourth detector, giving an alarm if delay measurement is out of tolerance, and recording if the delay measurement is normal; and calculating the emission gain of the microwave signal source according to the data acquired by the third detector and the fourth detector.
10. The method of claim 9, further comprising the step of comparing the received power of the first detector with the historical output power of the same type of radar under test to determine if the radar under test is transmitting normally.

Description

Microwave signal source with health state monitoring function and health state monitoring method Technical Field The invention belongs to the technical field of microwave signal sources, and particularly relates to a microwave signal source with health state monitoring function and a health state monitoring method. Background For the radar test by using the microwave signal source, when faults occur, some faults belong to occasional factors, and as the traditional microwave signal source does not have health monitoring capability, fault interfaces are difficult to separate, and only the microwave signal source can be calibrated and tested independently by interrupting the test and using instruments and equipment such as a frequency spectrograph, a power meter and the like to check the working state of the microwave signal source. The calibration test method is not beneficial to the investigation of the reasons of test faults, in particular to accidental faults and inherent faults which are difficult to reproduce in the test process. Disclosure of Invention The invention aims to provide a microwave signal source with health state monitoring and a health state monitoring method, wherein a health state monitoring component is integrated in the microwave signal source, and characteristic parameters of the working state of the microwave signal source and characteristic parameters of a receiving signal can be acquired through the health state monitoring component and are used for judging the working state of the microwave signal source. The technical scheme adopted by the invention for achieving the purpose is as follows: the invention provides a microwave signal source with health status monitoring function, which comprises a general microwave channel component, an intermediate frequency processing component, a health status monitoring component and a general microwave signal source platform; The universal microwave channel component comprises a radio frequency receiving unit, a radio frequency transmitting unit and a frequency synthesis unit, wherein the radio frequency receiving unit receives a radio frequency input signal and performs down-conversion to obtain a first intermediate frequency signal, the first intermediate frequency signal is divided into two paths, one path of the first intermediate frequency signal is output as a detection signal, and the other path of the first intermediate frequency signal is subjected to down-conversion to obtain a second intermediate frequency signal; The intermediate frequency processing assembly is connected with the universal microwave channel assembly, receives the second intermediate frequency signal output by the radio frequency receiving unit, processes the signal, and outputs a third intermediate frequency signal to the radio frequency transmitting unit; The health state monitoring component comprises a hardware state monitoring component and a software state monitoring component, wherein the hardware state monitoring component comprises at least four detectors for respectively receiving and monitoring detection signals of the radio frequency receiving unit, second intermediate frequency signals output by the radio frequency receiving unit, third intermediate frequency signals received by the radio frequency transmitting unit and radio frequency output signals output by the radio frequency transmitting unit, and the software state monitoring component is used for recording communication states and communication commands of a program-controlled computer, communication commands sent by an upper computer and a lower computer in real time and collecting acquisition information of the universal microwave channel component, the intermediate frequency processing component and the power supply component; The microwave signal source platform comprises a controller, a case, a bus and a power supply component, wherein the universal microwave channel component, the intermediate frequency processing component and the health state monitoring component are arranged in the case, and are used for supplying power through the bus and performing command interaction with the controller. The radio frequency receiving unit comprises a first subunit, a second subunit, a power divider, a first detector and a second detector, wherein the first subunit is connected with the power divider, the power divider divides output signals of the first subunit into two paths, the two paths of output signals are respectively input into the second subunit and the first detector, the first subunit is used for down-conversion of radio frequency input signals to obtain first intermediate frequency signals, the output signals of the second subunit are divided into two paths, one path of output signals are output to the intermediate frequency processing assembly, the other path of output signals are output to the second detector, and the second subunit is used for mixing and amplifying the first intermediate