Method for judging working state of transmitting subsystem based on power component

Abstract

The invention relates to the field of radar power components, in particular to a method for judging the working state of a transmitting subsystem based on a power component. The method comprises the following steps of: 1, detecting an output coupling detection value P of a power component to calculate an output power value of the power component; the method comprises the steps of 1, setting a temperature detection point in a power assembly, 2, judging the change trend of a power supply voltage value of the power assembly, 3, setting a temperature detection point in the power assembly, and judging the change trend of a temperature value through comparison, 4, carrying out health management on different power assemblies through detected data, and carrying out health management grade division on the power assemblies. And judging the working state of the power assembly. Various indexes of the power assembly can be detected in real time, the optimal operation state is kept, the service life of the power assembly is prolonged, and radar reliability and stability are improved.

Description

Technical Field

[0001] The invention relates to the field of radar power components, and in particular to a method for determining the working state of a transmitting subsystem based on a power component. Background Art

[0002] The power module is a key component of the radar transmission subsystem. Conventional radar systems have 16 power modules. The role of the power module is very important to the radar system, especially for radar equipment with high reliability requirements. The reliability and replaceability of the power module are very high. The main function of the power module is to amplify, switch, adjust power and other control functions.

[0003] Existing radar power components only have a single temperature or power detection device. When a certain indicator is too high or the system fails to work, the system is directly shut down for maintenance, and no early warning analysis of the power component status can be performed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides a method for determining the working state of a transmitting subsystem based on a power component. The present invention can realize a power component with a health management device BITE, can monitor and adjust various important indicators and report important data, can detect various indicators of the power component in real time and maintain the best operating state, extend the working life of the power component, and improve the reliability and stability of the radar.

[0005] The technical solution of the present invention is: a method for determining the working state of a transmitting subsystem based on a power component, characterized in that it comprises the following steps:

[0006] Step 1: Calculate the output power value of the power component by detecting the output coupling detection value P of the power component;

[0007] In the time interval T, for P (输出功率) The trend of value changes is carried out;

[0008] Within the time T, the output power value detected for an even number of times is P (偶数次) , the output power value detected for an odd number of times is P (奇数次) , the number of detections N within time T is a power of 2, and the algorithm is optimized according to the principle of DIT FFT, and the P within time T is (输出功率) The values ​​are divided into even and odd sequences:

[0009] P (偶数次) :P (0) , P (2) , P (4) ,…,P (N-2) , that is, P 1(r) =P (2r) ,r=0,1,…,N / 2-1

[0010] P (奇数次) :P (1) , P (3) , P (5) ,…,P (N-1) , that is, P 2(r) =P (2r+1) ,r=0,1,…,N / 2-1

[0011]

[0012] P (功率状态) =P (奇序列) -P (偶序列) (Formula 3)

[0013] By judging the P (功率状态) The value of P increases or decreases, judging (输出功率) The trend of value change;

[0014] Step 2: Determine the power supply voltage V of the power component (供电电压) The trend of value changes is determined by comparing V1, V2…V N Internal power value change trend V (电压状态) ,

[0015]

[0016] When the supply voltage state value V (电压状态) If the average value of A consecutive cycles decreases, it is determined that the power supply voltage of the current power component power supply is reduced, and the P value of step 1 is determined. (输出功率) Change; When the power supply value of the power component continues to decrease and the power is reduced, adjust the voltage value through the transmitter system CAN bus to maintain the P value of step 1 (输出功率) Stable output;

[0017] Step 3: Set the temperature detection point Temp inside the power component (组件温度) , when the temperature rises, by comparing and judging B time periods T1, T2…T N The temperature value changes trend. When the temperature reaches the threshold value, T (门限值) Then the warning is processed and the temperature detection value Temp is (温度状态) Health levels are divided into: L -5 From L0 to L5, the normal temperature level is L0. When the average value of the component temperature value for 5B consecutive time periods increases, the level increases by 1 every 5 times from L0, and the maximum is L5; when the average value of the component temperature value for 5B consecutive time periods decreases, the level decreases by 1 every 5 times from L0, and the minimum is L -5 ;

[0018] Step 4: Perform health management on different power components through the detected data, and determine the working status of the power components by classifying the health management levels of the power components.

[0019] According to the method for judging the working state of the transmitting subsystem based on the power component as described above, it is characterized in that: the output coupling detection value is the value output by the power component after passing through the synthesizer through the series feed synthesizer and the directional coupler, by detecting the output detection value P, the coupling coefficient K of the directional coupler, and the output power value P of the power component (输出功率) =P×K.

[0020] According to the method for determining the working status of a transmitting subsystem based on a power component as described above, it is characterized in that the time T can be between 1s and 3s.

[0021] According to the method for determining the working status of a transmitting subsystem based on a power component as described above, it is characterized in that the value range of N is between 1s and 3s.

[0022] According to the method for determining the working status of the transmitting subsystem based on the power component as described above, it is characterized in that the value range of A is 5 to 10.

[0023] According to the method for determining the working status of the transmitting subsystem based on the power component as described above, it is characterized in that the value range of B is between 1s and 3s.

[0024] According to the method for determining the working status of the transmitting subsystem based on the power component as described above, it is characterized in that: if three abnormal status values ​​appear in step one, step two, and step three, it is a serious status; if two abnormal status values ​​appear, it is an important status; if one abnormal status value appears, it is a general status.

[0025] According to the method for determining the working status of a transmitting subsystem based on power components as described above, the transmitting subsystem includes 16 power components, the transmitter output power is the combined power of the 16 power components, and the various indicators and health status of the power components are reported and determined through the CAN bus.

[0026] The beneficial effects of the present invention are: solving the problem of traditional power components shutting down due to serious problems, being able to monitor important indicators of the power components such as output power, supply voltage, component temperature, etc., and uploading the values ​​through the CAN bus, while being able to display the status. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 Schematic diagram of power module with health management device BITE

[0028] Figure 2Health management device BITE interface DETAILED DESCRIPTION

[0029] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0030] like Figure 1 As shown, it is a schematic diagram of the power component principle of the present invention with a health management device BITE. The power module is the core of the transmitter, which amplifies the excitation signal to the output power required by the system, and also has a health management device BITE. The power module amplification circuit adopts Class C common base amplification, which is characterized by high power and high efficiency. The power module outputs a peak power ≥440W in the full frequency band, the input peak power is 1.2W, and the total gain is ≥25.7dB. It requires 4 stages in series. The first and second stages are 11W and 50W amplifiers respectively. The third stage uses a group of 2×100W amplifiers in parallel output, which is fed through the last stage of one-to-three series feeding to drive three groups of 2×100W amplifiers in parallel respectively, and finally synthesized through three-in-one series feeding for output.

[0031] Each stage is designed as a standard single-stage matching amplifier with its own input and output matching network, that is, the impedance of the two ports is designed to be the same value (usually 50 ohms), and then the two stages are connected by a short line with the same characteristic impedance as the amplifier port impedance. This connection method can arbitrarily increase or decrease the number of amplifier stages. The design method of each stage is the same. When a power tube is damaged, it is easy to replace without too much debugging, which greatly improves the MTTR of the module. The first and second stages of the power module are 11W amplifiers and 50W amplifiers respectively. Since the power of the two stages is relatively small, the form of single-tube amplification can be used to promote the subsequent stage. According to the technical status of the power tube and the gain distribution of the power module, the output of the third-stage amplifier must be at least 162W to effectively promote the fourth stage, which is difficult to achieve using a single-tube amplification. In this solution, a balanced amplifier is used, and two 100W amplifiers are connected in parallel to achieve the power output of the third stage. It is achieved by connecting three 3dB Wilkinson power dividers and a multi-branch series-fed distributor in cascade. The Wilkinson power divider is easy to implement and has a large port isolation. When one of the two ports fails, the impact on the other port is small. At the same time, the advantages of the series-fed distributor are not lost.

[0032] The output power of the power module is output through the stripline coupler. The output coupled power is first sent to the detector for detection, and then sent to the health management device BITE for fault detection, which reduces the interference between high and low frequency signals. At the same time, the BIT synchronization signal, voltage detection signal, and temperature control switch signal are connected to the health management BITE for detection, which can comprehensively detect and manage the status of the power component, and report data and status prompts. See the power module for BITE interface requirements. Figure 2 .

[0033] In a conventional radar transmission subsystem, there are generally 16 power components, and the output power of the radar transmitter is the combined power of the 16 power components. The size of the transmitter output power directly affects the power of the radar. The present invention mainly detects the output coupling detection value through the health management device BITE to calculate the output power value, detects the input voltage detection value, and detects the temperature value. It mainly determines whether the current working state of the power component is normal by detecting the changes in these three indicators, and at the same time reports the various indicators and health status of the power component through the CAN bus for judgment.

[0034] A method for determining the working state of a transmitting subsystem based on a power component of the present invention comprises the following steps:

[0035] Step 1: Calculate the output power value of the power component by detecting the output coupling detection value P of the power component. Since the output coupling detection value is the value output by the power component after passing through the synthesizer, the series-fed synthesizer and the directional coupler, by detecting the output detection value P and the coupling coefficient K of the directional coupler, the output power value P of the power component can be calculated. (输出功率) =P×K, within a certain time interval T, for P (输出功率) The output power value detected in even numbers is P within the time T. (偶数次) , the output power value detected for an odd number of times is P (奇数次) , assuming that the number of detections N within time T is a power of 2, the algorithm is optimized according to the principle of DIT FFT, and the P within time T is (输出功率) The values ​​are divided into even sequence and odd sequence for algorithm design.

[0036] P (偶数次) :P (0) , P (2) , P (4) ,…,P (N-2) , that is, P 1(r) =P (2r) ,r=0,1,…,N / 2-1

[0037] P (奇数次) :P (1) , P (3) , P (5) ,…,P (N-1) , that is, P 2(r) =P (2r+1) ,r=0,1,…,N / 2-1

[0038]

[0039]

[0040] P (功率状态) =P(奇序列) -P (偶序列) (Formula 3)

[0041] By judging the P (功率状态) The increase or decrease of the value of (输出功率) The change trend of the value can be calculated by this method, and the change trend of the power component within a certain period of time can be monitored. Especially for the periodic sawtooth fluctuation, by matching the even sequence and odd sequence sampling frequency with the fluctuation frequency, the output power can be predicted with high accuracy. Within the set threshold value, according to P (功率状态) The trend of value changes can be used to determine whether the current power component is in good operating condition. By judging the value of the health management device BITE installed in the 16 power components, the output power value status of the system can be detected, and finally the value can be reported through the transmitter system CAN.

[0042] In this step 1, the value range of T is between 1s and 3s.

[0043] Step 2: When the power component continues to work in the full frequency band, the amplifier inside the power component is powered by an external power supply. Due to the influence of ambient temperature or device performance, when the switching power supply is set to 32V output, the output power of the power component may show a downward trend, and the input voltage 32V may also decrease. At this time, the voltage value can be monitored through the health management device BITE to determine the power supply voltage V (供电电压) The trend of value changes is determined by comparing V1, V2…V N Internal power value change trend V (电压状态) ,

[0044]

[0045] When the supply voltage state value V (电压状态) If the average value of A consecutive cycles decreases, it is judged that the current switching power supply voltage value is reduced, and at the same time, the P value of step 1 is judged to be (输出功率) When the power supply value of the power component continues to decrease and the power is reduced, adjust the voltage value through the transmitter system CAN bus to maintain the P value of step 1. (输出功率) The output is stabilized, thus resolving the situation where the voltage drop caused by ambient temperature or device characteristics affects the output power of the power component.

[0046] In this step 2, the value range of N is between 1s and 3s, and the value range of A is between 5 and 10.

[0047] Step 3: When the radar continues to work, the temperature inside the transmitter cabin will also increase. As the power component continues to work, the temperature inside the power component will also rise. The power component is mainly composed of a power supply and an amplifier, which will cause a large amount of heat inside the power component. If the heat dissipation device does not dissipate heat well or the internal components of the power component fail, the temperature inside the power component will continue to rise, thereby affecting the working performance of the power component and the output power of the radar transmitter. This solution uses the health management device BITE to monitor the temperature inside the power component and sets a temperature detection point Temp inside the power component. (组件温度) , when the temperature rises, by comparing and judging B time periods T1, T2…T N The temperature value changes trend. When the temperature reaches the threshold value, T (门限值) Then the warning is processed and the temperature detection value Temp is (温度状态) Health levels are divided into: L -5 to L0 to L5 (L -5 =-5, L -4 =-4, the other levels are similar, for example, L3 = 3), the normal temperature level is L0, when the average value of the component temperature value for 5B consecutive time periods increases, the level increases by 1 every 5 times from L0, and the maximum is L5; when the average value of the component temperature value for 5B consecutive time periods decreases, the level decreases by 1 every 5 times from L0, and the minimum is L -5 . Temperature status Temp via CAN bus (温度状态) The system also monitors the over-temperature of power components and takes necessary measures.

[0048] In this step, the value range of B is between 1s and 3s.

[0049] Step 4: Conventional radar equipment generally has 16 power components. The health management device BITE of this solution has an automatic ID number recognition function. Through hardware function settings, the health management device BITE installed in power components with different bit numbers is automatically updated to the corresponding power component bit number. This design can perform health management on all power components. Through steps 1, 2, and 3, different power components can be managed healthily through the detected data, and the working status of the power components can be judged by dividing the health management levels of the 16 power components.

[0050] If three abnormal status values ​​appear in step 1, step 2, and step 3, it is a serious state; if two abnormal status values ​​appear, it is an important state; if one abnormal status value appears, it is a general state. At the same time, the corresponding bit number and abnormal status level are reported through the transmitter system CAN, indicating that the power component needs to be repaired or replaced.

[0051] The present invention is not limited to the above-mentioned specific implementation modes. A person skilled in the art can implement the present invention in various other specific implementation modes based on the contents disclosed in the present invention. Therefore, any design that adopts the design structure and concept of the present invention and makes some simple changes or modifications shall fall within the scope of protection of the present invention.

Claims

1. A method for determining the working state of a transmitting subsystem based on a power component, characterized in that: The following steps are involved: Step 1: Calculate the output power value of the power component by detecting the output coupling detection value P of the power component; In the time interval T, for P (输出功率) The trend of value changes is carried out; Within the time T, the output power value detected for an even number of times is P (偶数次) , the output power value detected for an odd number of times is P (奇数次) , the number of detections N within time T is a power of 2, and the algorithm is optimized according to the principle of DIT FFT, and the P within time T is (输出功率) The values ​​are divided into even and odd sequences: P (偶数次) :P (0) , P (2) , P (4) ,…,P (N-2) , that is, P 1(r) =P (2r) ,r=0,1,…,N / 2-1 P (奇数次) :P (1) , P (3) , P (5) ,…,P (N-1) , that is, P 2(r) =P (2r+1) ,r=0,1,…,N / 2-1 P (功率状态) =P (奇序列) -P (偶序列) By judging the P (功率状态) The value of P increases or decreases, judging (输出功率) The trend of value change; Step 2: Determine the voltage V of the power supply of the power component (供电电压) The trend of value changes is determined by comparing V1, V2…V N Internal power value change trend V (电压状态) , When the supply voltage state value V (电压状态) If the average value of A consecutive cycles decreases, it is judged that the current switching power supply voltage value is reduced, and at the same time, the P value of step 1 is judged to be (输出功率) Change; when the supply voltage value continues to drop and the power decreases, adjust the voltage value through the transmitter system CAN bus to maintain the P value of step 1. (输出功率) Stable output; Step 3: Set the temperature detection point Temp inside the power component (组件温度) , when the temperature rises, by comparing and judging B time periods T1, T2…T N The temperature value changes trend. When the temperature reaches the threshold value, T (门限值) Then the warning is processed and the temperature detection value Temp is (温度状态) Health levels are divided into: L -5 From L0 to L5, the normal temperature level is L0. When the average value of the component temperature value for 5B consecutive time periods increases, the level increases by 1 every 5 times from L0, and the maximum is L5; when the average value of the component temperature value for 5B consecutive time periods decreases, the level decreases by 1 every 5 times from L0, and the minimum is L -5 ; Step 4: Perform health management on different power components through the detected data, and determine the working status of the power components by classifying the health management levels of the power components.

2. A method for determining the working state of a transmitting subsystem based on a power component according to claim 1, characterized in that: The output coupling detection value is the value of the power component after passing through the synthesizer, the series-fed synthesizer and the directional coupler. By detecting the output detection value P, the coupling coefficient K of the directional coupler, and the output power value P of the power component (输出功率) =P×K.

3. A method for determining the working state of a transmitting subsystem based on a power component according to claim 1, characterized in that: The T time value can be between 1s and 3s.

4. The method for determining the working state of a transmitting subsystem based on a power component according to claim 1, characterized in that: The value range of N is from 1s to 3s.

5. The method for determining the working state of a transmitting subsystem based on a power component according to claim 1, characterized in that: The value range of A is 5 to 10.

6. The method for determining the working state of a transmitting subsystem based on a power component according to claim 1, characterized in that: The value range of B is between 1s and 3s.

7. A method for determining the working state of a transmitting subsystem based on a power component according to any one of claims 1 to 6, characterized in that: If three abnormal status values ​​appear in step 1, step 2, and step 3, it is a serious state; if two abnormal status values ​​appear, it is an important state; if one abnormal status value appears, it is a general state.

8. A method for determining the working state of a transmitting subsystem based on a power component according to any one of claims 1 to 6, characterized in that: The transmitting subsystem includes 16 power components. The transmitter output power is the combined power of the 16 power components. The various indicators and health status of the power components are reported and judged through the CAN bus.

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