Automatic fault diagnosis system of radar equipment

Abstract

The invention belongs to the technical field of radar diagnosis systems, and discloses an automatic fault diagnosis system for radar equipment, which comprises a data acquisition module, a data analysis module, a fault positioning module, a fault display module and a data storage module, and is characterized in that the data acquisition module is used for acquiring detection instrument data and radar operation and field detection data; according to the invention, radar equipment data and radar detection data are respectively acquired through the data acquisition module, the radar equipment is diagnosed through the fault diagnosis module, and the radar detection data is detected through a radar data diagnosis algorithm, so that the precision of the radar in the working process is guaranteed; after a fault is detected, the system displays fault information on a screen, sends out an alarm signal to remind an operator to pay attention, and stores radar fault data by using a data storage module, so that the operator can retrieve the reason and position of the radar fault in the previous period.

Description

Technical Field

[0001] The present invention relates to the technical field of radar diagnosis systems, in particular to an automatic fault diagnosis system for radar equipment. Background Art

[0002] With the widespread application of radars, there are more and more types of radars. At present, the common way of radar fault processing is that the fault diagnosis terminal obtains the operating data of the faulty radar to be tested through the user terminal, and sends the operating data to the expert terminal. The expert terminal obtains the corresponding fault diagnosis result according to the operating data, and sends the fault elimination plan corresponding to the fault diagnosis result input by the expert to the user terminal through the fault diagnosis terminal.

[0003] The existing radar fault diagnosis system can only detect the internal equipment of the radar. The radar fault diagnosis system ensures that the radar can operate normally. During the operation of the radar, in addition to equipment failures, there is also the question of whether the data transmitted during the radar operation is normal. However, in the prior art, there is no diagnosis system involving whether the data transmitted during the radar operation is normal. In summary, the present invention proposes an automatic fault diagnosis system for radar equipment. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides an automatic fault diagnosis system for radar equipment, which solves the problems raised in the above background technology.

[0005] To solve the above technical problems, according to one aspect of the present invention, more specifically, a fault automatic diagnosis system for radar equipment includes a data acquisition module, a data analysis module, a fault location module, a fault display module and a data storage module, characterized in that: the data acquisition module is used to collect detection instrument data and radar operation and field detection data;

[0006] The data analysis module is used to receive the data from the data acquisition module and analyze the data using the fault diagnosis module;

[0007] The fault location module is used to extract fault features and match and identify the fault features with known fault modes to determine the type and location of the fault;

[0008] After the fault display module detects a fault, the system will display the fault information on the screen and send out an alarm signal to alert the operator;

[0009] The data storage module is used to store radar fault data so that operators can retrieve the causes and locations of previous radar faults.

[0010] Furthermore, the data collected by the data collection module includes detection instrument data and radar operation and field detection data;

[0011] Detection instrument data: data obtained by measuring various electrical parameters of the radar system through measuring instruments;

[0012] Radar operation data: specific detection data required for daily radar operation and detection;

[0013] Field test data: data obtained through field testing and compared with radar test data during radar test.

[0014] Furthermore, the data analysis module includes a fault diagnosis module and a radar operation data diagnosis algorithm;

[0015] Fault diagnosis module: compares the data of the detection instrument with the preset normal working parameter range. If the measured data exceeds the normal range, it is judged as a fault;

[0016] Radar operation data diagnosis algorithm: Compare the data collected during multiple radar detection processes with the field detection data. If the measured data exceeds the normal range, it is judged as a fault.

[0017] Furthermore, in the radar operation data diagnosis algorithm, the expression for judging whether the radar signal is normal is:

[0018]

[0019] Where P r is the strength of the radar receiving signal; P t is the radar transmitting power; Gt is the radar transmitting antenna gain; λ is the radar wavelength; σ is the radar coverage cross-sectional area; R is the distance between the target and the radar; B is the power of the ambient noise around the radar;

[0020] The above relationship is used to detect once every 1 hour, for a total of 10 times, and the mean μ and standard deviation ∈ of the signal intensity are calculated:

[0021]

[0022] Among them, when the radar signal strength is:

[0023] Pr<μ-k∈

[0024] or

[0025] Pr>μ+k∈

[0026] Where μ is the mean of multiple radar detection results, ∈ is the standard deviation of multiple radar detection results, and k is a constant with a value of 2 to 3. When the radar signal strength Pr satisfies the above expression, the radar signal is abnormal.

[0027] Furthermore, in the radar operation data diagnosis algorithm, the expression for judging whether the radar detection distance is normal is:

[0028]

[0029] Where, R is the distance detected by the radar; Pt is the radar transmit power; Gt is the radar transmit antenna gain; Gr is the radar receive antenna gain; v is the radar coverage cross-sectional area; L is the system loss factor; dR is the detection distance error coefficient; A is the radar signal power density; B is the power density of the ambient noise around the radar;

[0030] According to the comparison between the radar detection distance and the actual detection distance, when the error between the radar detection distance and the actual detection distance is higher than 3%, there is an abnormality in the radar detection distance.

[0031] Furthermore, the fault location module includes feature extraction and fault feature matching and identification;

[0032] Feature extraction: The radar system detects targets by transmitting and receiving signals. Failures can cause signal anomalies, so feature extraction is performed through radar signals.

[0033] Fault feature matching and identification: Match and identify the extracted fault features with known fault patterns to determine the type and location of the fault.

[0034] Furthermore, the detection instrument data also includes performance test data of the radar system, including transmission power, receiving sensitivity, and signal processing capability data.

[0035] A method for using an automatic fault diagnosis system for radar equipment comprises the following steps:

[0036] S1. Collect detection instrument data and radar operation and field detection data through the data acquisition module;

[0037] S2, the data analysis module receives the data collected by the data acquisition module and uses the fault diagnosis module and the radar operation data diagnosis algorithm to analyze the data to detect whether the internal equipment and detection accuracy of the radar are normal;

[0038] S3. When a radar device fails, the features of the fault information are extracted through the radar signal, and the extracted fault features are matched and identified with the known fault mode to determine the type and location of the fault;

[0039] S4. When the radar accuracy fails, the specific fault data information will be displayed on the screen and an alarm signal will be issued to remind the operator to pay attention;

[0040] S5. The fault data is stored in the data storage module so that the operator can retrieve the causes and locations of previous radar faults.

[0041] The beneficial effects of the automatic fault diagnosis system of a radar device of the present invention are:

[0042] The present invention collects radar equipment data and radar detection data respectively through a data acquisition module, diagnoses the radar equipment using a fault diagnosis module, and then detects the radar detection data using a radar data diagnosis algorithm, thereby ensuring the accuracy of the radar during operation. The present invention is also provided with a fault display module. After a fault is detected, the system will display the fault information on the screen and send out an alarm signal to remind the operator to pay attention, and use the data storage module to store the radar fault data so that the operator can retrieve the causes and locations of previous radar faults. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0044] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0045] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present application can be combined with each other without conflict.

[0046] like Figure 1 As shown, according to one aspect of the present invention, there is provided a radar equipment fault automatic diagnosis system, comprising a data acquisition module, a data analysis module, a fault location module, a fault display module and a data storage module, characterized in that: the data acquisition module is used to collect detection instrument data and radar operation and field detection data;

[0047] The data analysis module is used to receive the data from the data acquisition module and analyze the data using the fault diagnosis module;

[0048] The fault location module is used to extract fault features and match and identify the fault features with known fault modes to determine the type and location of the fault;

[0049] After the fault display module detects a fault, the system will display the fault information on the screen and send out an alarm signal to alert the operator;

[0050] The data storage module is used to store radar fault data so that operators can retrieve the causes and locations of previous radar faults.

[0051] In this embodiment, the data collected by the data collection module includes detection instrument data and radar operation and field detection data;

[0052] Detection instrument data: data obtained by measuring various electrical parameters of the radar system through measuring instruments;

[0053] Radar operation data: specific detection data required for daily radar operation and detection;

[0054] Field test data: data obtained through field testing and compared with radar test data during radar test.

[0055] In this embodiment, the data analysis module includes a fault diagnosis module and a radar operation data diagnosis algorithm;

[0056] Fault diagnosis module: compares the data of the detection instrument with the preset normal working parameter range. If the measured data exceeds the normal range, it is judged as a fault;

[0057] Radar operation data diagnosis algorithm: Compare the data collected during multiple radar detection processes with the field detection data. If the measured data exceeds the normal range, it is judged as a fault.

[0058] In this embodiment, in the radar operation data diagnosis algorithm, the expression for judging whether the radar signal is normal is:

[0059]

[0060] Where P r is the strength of the radar receiving signal; P t is the radar transmitting power; Gt is the radar transmitting antenna gain; λ is the radar wavelength; σ is the radar coverage cross-sectional area; R is the distance between the target and the radar; B is the power of the ambient noise around the radar;

[0061] The above relationship is used to detect once every 1 hour, for a total of 10 times, and the mean μ and standard deviation ∈ of the signal intensity are calculated:

[0062]

[0063] Among them, when the radar signal strength is:

[0064] Pr<μ-k∈

[0065] or

[0066] Pr>μ+k∈

[0067] Where μ is the mean of multiple radar detection results, ∈ is the standard deviation of multiple radar detection results, and k is a constant with a value of 2 to 3. When the radar signal strength Pr satisfies the above expression, the radar signal is abnormal.

[0068] In this embodiment, in the radar operation data diagnosis algorithm, the expression for judging whether the radar detection distance is normal is:

[0069]

[0070] Where, R is the distance detected by the radar; Pt is the radar transmit power; Gt is the radar transmit antenna gain; Gr is the radar receive antenna gain; σ is the radar coverage cross-sectional area; L is the system loss factor; dR is the detection distance error coefficient; A is the radar signal power density; B is the power density of the ambient noise around the radar;

[0071] According to the comparison between the radar detection distance and the actual detection distance, when the error between the radar detection distance and the actual detection distance is higher than 3%, there is an abnormality in the radar detection distance.

[0072] In this embodiment, the fault location module includes feature extraction and fault feature matching and identification;

[0073] Feature extraction: The radar system detects targets by transmitting and receiving signals. Failures can cause signal anomalies, so feature extraction is performed through radar signals.

[0074] Fault feature matching and identification: Match and identify the extracted fault features with known fault patterns to determine the type and location of the fault.

[0075] In this embodiment, the detection instrument data also includes performance test data of the radar system, including transmission power, receiving sensitivity, and signal processing capability data.

[0076] A method for using an automatic fault diagnosis system for radar equipment comprises the following steps:

[0077] S1. Collect detection instrument data and radar operation and field detection data through the data acquisition module;

[0078] S2, the data analysis module receives the data collected by the data acquisition module and uses the fault diagnosis module and the radar operation data diagnosis algorithm to analyze the data to detect whether the internal equipment and detection accuracy of the radar are normal;

[0079] S3. When a radar device fails, the features of the fault information are extracted through the radar signal, and the extracted fault features are matched and identified with the known fault mode to determine the type and location of the fault;

[0080] S4. When the radar accuracy fails, the specific fault data information will be displayed on the screen and an alarm signal will be issued to remind the operator to pay attention;

[0081] S5. The fault data is stored in the data storage module so that the operator can retrieve the causes and locations of previous radar faults.

[0082] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention also fall within the protection scope of the present invention.

Claims

1. A fault automatic diagnosis system for radar equipment, comprising a data acquisition module, a data analysis module, a fault location module, a fault display module and a data storage module, characterized in that: The data acquisition module is used to collect detection instrument data and radar operation and field detection data; The data analysis module is used to receive the data from the data acquisition module and analyze the data using the fault diagnosis module; The fault location module is used to extract fault features and match and identify the fault features with known fault modes to determine the type and location of the fault; After the fault display module detects a fault, the system will display the fault information on the screen and send out an alarm signal to alert the operator; The data storage module is used to store radar fault data so that operators can retrieve the causes and locations of previous radar faults.

2. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: The data collected by the data collection module includes detection instrument data and radar operation and field detection data; Detection instrument data: data obtained by measuring various electrical parameters of the radar system through measuring instruments; Radar operation data: specific detection data required for daily radar operation and detection; Field test data: data obtained through field testing and compared with radar test data during radar test.

3. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: The data analysis module includes a fault diagnosis module and a radar operation data diagnosis algorithm; Fault diagnosis module: compares the data of the detection instrument with the preset normal working parameter range. If the measured data exceeds the normal range, it is judged as a fault; Radar operation data diagnosis algorithm: Compare the data collected during multiple radar detection processes with the field detection data. If the measured data exceeds the normal range, it is judged as a fault.

4. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: In the radar operation data diagnosis algorithm, the expression for judging whether the radar signal is normal is: Where P r is the strength of the radar receiving signal; P t is the radar transmitting power; Gt is the radar transmitting antenna gain; λ is the radar wavelength; σ is the radar coverage cross-sectional area; R is the distance between the target and the radar; B is the power of the ambient noise around the radar; The above relationship is used to detect once every 1 hour, for a total of 10 times, and the mean μ and standard deviation ∈ of the signal intensity are calculated: Among them, when the radar signal strength is: Pr<μ-k∈ or Pr>μ+k∈ Where μ is the mean of multiple radar detection results, ∈ is the standard deviation of multiple radar detection results, and k is a constant with a value of 2 to 3. When the radar signal strength Pr satisfies the above expression, the radar signal is abnormal.

5. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: In the radar operation data diagnosis algorithm, the expression for judging whether the radar detection distance is normal is: Where, R is the distance detected by the radar; Pt is the radar transmit power; Gt is the radar transmit antenna gain; Gr is the radar receive antenna gain; v is the radar coverage cross-sectional area; L is the system loss factor; dR is the detection distance error coefficient; A is the radar signal power density; B is the power density of the ambient noise around the radar; According to the comparison between the radar detection distance and the actual detection distance, when the error between the radar detection distance and the actual detection distance is higher than 3%, there is an abnormality in the radar detection distance.

6. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: The fault location module includes feature extraction and fault feature matching and identification; Feature extraction: The radar system detects targets by transmitting and receiving signals. Failures can cause signal anomalies, so feature extraction is performed through radar signals. Fault feature matching and identification: Match and identify the extracted fault features with known fault patterns to determine the type and location of the fault.

7. The automatic fault diagnosis system for radar equipment according to claim 1, characterized in that: The detection instrument data also includes performance test data of the radar system, including transmission power, receiving sensitivity, and signal processing capability data.

8. An automatic fault diagnosis system for radar equipment, comprising a method for using an automatic fault diagnosis system for radar equipment according to any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Collect detection instrument data and radar operation and field detection data through the data acquisition module; S2, the data analysis module receives the data collected by the data acquisition module and uses the fault diagnosis module and the radar operation data diagnosis algorithm to analyze the data to detect whether the internal equipment and detection accuracy of the radar are normal; S3. When a radar device fails, the features of the fault information are extracted through the radar signal, and the extracted fault features are matched and identified with the known fault mode to determine the type and location of the fault; S4. When the radar accuracy fails, the specific fault data information will be displayed on the screen and an alarm signal will be issued to remind the operator to pay attention; S5. The fault data is stored in the data storage module so that the operator can retrieve the causes and locations of previous radar faults.

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