CN113419220A - High-voltage type phased array radar exciter with multiple protection functions - Google Patents
High-voltage type phased array radar exciter with multiple protection functions Download PDFInfo
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- CN113419220A CN113419220A CN202110675039.3A CN202110675039A CN113419220A CN 113419220 A CN113419220 A CN 113419220A CN 202110675039 A CN202110675039 A CN 202110675039A CN 113419220 A CN113419220 A CN 113419220A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
- G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
- G01S7/28—Details of pulse systems
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
Abstract
The invention provides a high-voltage type phased array radar exciter with multiple protection functions, which comprises a power supply part and a control part, wherein the power supply part comprises: the power supply part comprises an equal ratio power supply conversion module, a transmitting branch leakage voltage modulation module, a receiving branch voltage modulation module and a transmitting branch grid voltage modulation module; the control part comprises an FPGA module, a sending module, a receiving module, an A/D sampling module, a temperature measuring module and a driving module. The exciter adopts an equal ratio conversion framework with a preposed capacitor, utilizes the characteristic of fast open-loop response of the equal ratio conversion framework to meet the instantaneous response requirement of a T/R component, simultaneously adopts a high-voltage input mode, reduces the current value in the power transmission process and reduces the heat loss of a system on one hand, improves the input-output voltage ratio on the other hand, and can synchronously reduce the capacity of the preposed capacitor by N when the ratio is N2The volume and the cost of the exciter can be effectively controlled.
Description
Technical Field
The invention relates to a phased array radar, in particular to a high-voltage type phased array radar exciter with multiple protection functions.
Background
The phased array radar exciter is positioned among the wave control machine, the array surface power supply and the T/R assembly in the antenna subsystem, and is responsible for converting the output voltage of the array surface power supply into pulse voltage required by the work of the T/R assembly; on the other hand, the wave control data transmitted by the wave control machine is transmitted to the T/R component according to the configuration command and the protocol format, so that the control of the phase shift attenuation data of the T/R component is completed, and the configuration of the wave beam direction of the array surface is realized; meanwhile, the device is also responsible for collecting states of drain voltage, grid voltage, temperature, radio frequency detection signals and the like of the component in real time, protecting the T/R component by taking the states as a reference, and reporting data back to the wave control machine so as to realize monitoring of the state of the device.
The load characteristic of a T/R component in the phased array radar at the present stage is a pulse load, the traditional low-voltage exciter is mostly adopted in the phased array radar at present, a power loop for performing power supply modulation on the leakage voltage of a T/R component transmitting branch power amplifier tube is mainly realized by a framework with a large number of energy storage capacitors behind a DC/DC power supply module, wherein the DC/DC power supply module completes the conversion from the array surface power supply voltage to the leakage voltage of the T/R component transmitting branch power amplifier tube, but the response speed of the power loop is slow, so that the instantaneous requirement of the T/R component on energy cannot be met, and therefore, a large number of energy storage capacitors need to be placed to realize the supply of instantaneous energy. The exciter based on the structure needs a large amount of energy storage capacitors, so that the cost of a single machine is increased, the volume is increased, and the reliability is reduced.
Meanwhile, the T/R component is used as a core component of the phased array radar and has a great influence on the performance of the radar, a traditional protection circuit generally monitors and protects the voltage of a main loop only, comprehensive coverage is not carried out on various working states of the component, and if the component is damaged due to the fact that monitoring and protection are not in place, high economic loss is caused and large influence can be generated on the performance of the radar.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a high-voltage phased array radar exciter with multiple protection functions, which adopts an equal ratio conversion framework with a preposed capacitor, meets the instantaneous response requirement of a T/R component by utilizing the characteristic of fast open-loop response of the equal ratio conversion framework, simultaneously adopts a high-voltage input mode, reduces the current value in the power transmission process on one hand, reduces the heat loss of a system, improves the input-output voltage ratio on the other hand, and can synchronously reduce the capacity of the preposed capacitor by N when the ratio is N2The volume and the cost of the exciter are effectively controlled; meanwhile, the high-precision AD sampling module and the temperature measuring module are utilized to carry out all-around monitoring protection on various voltages and temperatures of each channel of the T/R assembly, the assembly is closed at a working critical point, the safety of the assembly is ensured, a fault point can be accurately positioned during system debugging, and the system troubleshooting is facilitated.
The high-voltage phased array radar exciter with multiple protection functions provided by the invention comprises the following components: a power supply section and a control section;
the power supply part comprises an equal ratio power supply conversion module, a transmitting branch leakage voltage modulation module, a receiving branch voltage modulation module and a transmitting branch grid voltage modulation module;
the input end of the geometric proportion power supply conversion module is used for being connected with a front surface power supply, and the output end of the geometric proportion power supply conversion module is used for being connected with a T/R component through a transmitting branch circuit leakage voltage modulation module, a receiving branch circuit voltage modulation module and a transmitting branch circuit grid voltage modulation module respectively;
the control part comprises an FPGA module, a sending module, a receiving module, an A/D sampling module, a temperature measuring module and a driving module;
the first output end of the FPGA module is used for being connected with a wave control machine through a sending module, and the second output end of the FPGA module is used for being connected with the T/R component through a driving module; the first input end of the FPGA module is used for being connected with a wave control machine through a receiving module, the second input end of the FPGA module is used for being connected with the T/R assembly through an A/D sampling module, and the third input end of the FPGA module is used for being connected with the T/R assembly through a temperature measuring module;
the equal ratio power supply rotorThe conversion module adopts an equal ratio conversion framework with a preposed capacitor, utilizes the characteristic of fast open-loop response of the equal ratio conversion framework to meet the instantaneous response requirement of the T/R component, and simultaneously adopts a high-voltage input mode, so that on one hand, the current value in the power transmission process is reduced, the heat loss of a system is reduced, on the other hand, the input-output voltage ratio is improved, and when the ratio is N, the capacity of the preposed capacitor can be synchronously reduced by N2And the volume and the cost of the exciter are effectively controlled.
Preferably, the transmitting branch leakage voltage modulation module modulates and outputs the voltage output by the equal ratio conversion module and the transmitting gating signal generated by the logic of the FPGA module into the drain voltage required by the transmitting branch power amplifier tube;
the receiving branch voltage modulation module is used for converting and stabilizing the voltage output by the equal ratio conversion module through DC/DC and outputting the voltage to be required by the receiving branch multifunctional chip and the low-noise amplifier chip;
and the transmitting branch gate voltage module is used for outputting the voltage output by the equal ratio conversion module to the gate voltage required by the transmitting branch power amplification tube after DC/DC transformation and LDO voltage stabilization.
Preferably, the FPGA module is configured to receive serial data from the wave controller through the receiving module, process the serial data according to a protocol requirement, and send the processed serial data to the T/R component through the driving module, so as to configure a phase shift attenuation value of a multifunctional chip inside the T/R component;
meanwhile, the FPGA module is also used for carrying out real-time detection and BIT statistics on various voltages, radio frequency detection voltages and component temperatures of the transmitting branch and the receiving branch through the A/D sampling module and the temperature measuring module, and when any working state exceeds a set range, the component is closed in time, the safety of the component is ensured, and BIT data are transmitted back to the wave control machine through the transmitting module.
Preferably, the a/D sampling module and the temperature measuring module correspond to the channels of the T/R assembly one to one, and are used for monitoring the working state of each channel and accurately positioning the fault problem during troubleshooting on the front surface.
Preferably, the FPGA module includes a command parsing module, a timing configuration module, a phase shift attenuation module and a BIT report module;
the command analysis module is used for receiving serial data transmitted by the wave controller and transmitting control data obtained by analysis to the phase-shifting attenuation configuration module and the time sequence configuration module;
the phase-shifting attenuation configuration module is used for receiving the phase-shifting attenuation data transmitted from the command analysis module, carrying out corresponding conversion operation according to a data format required by the T/R assembly, sending the phase-shifting attenuation data to the driving module according to an interface working time sequence and further sending the phase-shifting attenuation data to the T/R assembly;
the time sequence configuration module is used for receiving the control signal, the A/D voltage sampling signal and the temperature signal from the command analysis module, carrying out corresponding switching and enabling protection operation on the transmitting gating signal and the receiving gating signal, outputting the processed pulse signal to the driving module and the power supply part, and immediately setting the transmitting synchronous signal to be in an invalid state when a certain T/R component channel is in overvoltage or overtemperature so as to play a role of protecting the component;
and the BIT report module acquires the power supply voltage, the radio frequency detection voltage and the temperature state of each channel of the T/R assembly in real time and transmits the power supply voltage, the radio frequency detection voltage and the temperature state to the sending module according to an agreed format, so that the report wave control machine is reported.
Preferably, the geometric proportion power module adopts a +384V high-voltage input and +48V output capacitance preposed geometric proportion conversion architecture, and the input-output voltage ratio is 8: 1, the capacitance required for the exciter can be reduced by a factor of 64 accordingly.
Compared with the prior art, the invention has the following beneficial effects:
1. the exciter of the invention adopts an equal ratio conversion framework with a preposed capacitor, utilizes the characteristic of fast open loop response of the equal ratio conversion framework to meet the instantaneous response requirement of a T/R component, and simultaneously adopts a high-voltage input mode, thereby reducing the current value in the power transmission process and reducing the heat loss of a system on one hand, improving the input-output voltage ratio on the other hand, and synchronously reducing the capacity of the preposed capacitor by N when the ratio is N2The volume and the cost of the exciter are effectively controlled;
2. the invention utilizes the high-precision A/D sampling module and the temperature measuring module to monitor various working voltages and working temperatures of each channel of the T/R assembly in real time, and accurately closes the assembly at a working critical point, thereby ensuring the safety of the assembly, improving the reliability of the system, solving the problem that the performance of the radar is influenced because the assembly is damaged due to inadequate monitoring protection, being beneficial to accurately positioning fault points in the debugging process of the array surface and improving the maintainability of the system.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is a schematic block diagram of a high voltage type phased array radar exciter with multiple protection functions according to an embodiment of the present invention.
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.
Fig. 1 is a schematic block diagram of a high voltage type phased array radar exciter with multiple protection functions according to an embodiment of the present invention, and as shown in fig. 1, the high voltage type phased array radar exciter with multiple protection functions according to the present invention includes: power supply portion and control portion:
the power supply part comprises an equal ratio power supply conversion module, a transmitting branch leakage voltage modulation module, a receiving branch voltage modulation module and a transmitting branch grid voltage modulation module;
the input end of the geometric proportion power supply conversion module is used for being connected with a front surface power supply, and the output end of the geometric proportion power supply conversion module is used for being connected with a T/R component through a transmitting branch circuit leakage voltage modulation module, a receiving branch circuit voltage modulation module and a transmitting branch circuit grid voltage modulation module respectively;
the control part comprises an FPGA module, a sending module, a receiving module, an A/D sampling module, a temperature measuring module and a driving module;
the first output end of the FPGA module is used for being connected with a wave control machine through a sending module, and the second output end of the FPGA module is used for being connected with the T/R component through a driving module; the first input end of the FPGA module is used for being connected with a wave control machine through a receiving module, the second input end of the FPGA module is used for being connected with the T/R assembly through an A/D sampling module, and the third input end of the FPGA module is used for being connected with the T/R assembly through a temperature measuring module.
In the preferred embodiment of the present invention shown in fig. 1, the equal-ratio power module adopts a +384V high-voltage input and +48V output capacitor pre-equal-ratio conversion architecture, and the open-loop response of the equal-ratio conversion architecture is fast enough to meet the transient response requirement of the T/R device, where the input-output voltage ratio is 8: under the parameter, the capacitance value required by the exciter can be correspondingly reduced by 64 times, the area and the material of a printed board are greatly saved, the volume and the cost of a product are effectively controlled, meanwhile, the current value in the power transmission process is also reduced by adopting high-voltage input, the heat loss of the exciter is reduced, and the heat dissipation environment of a system is improved.
In the preferred embodiment of the invention, the transmitting branch leakage voltage modulation module adopts a form that an FPGA module controls a transmitting gating signal switch to drive the drain voltage of the transmitting branch in a corresponding PMOS mode, the receiving branch voltage modulation module can be selected from a DC/DC conversion chip which can convert input +48V into +5V and is used by a receiving branch multifunctional chip and a low-noise amplifier chip, the transmitting branch grid voltage modulation module adopts a DC/DC conversion chip which converts the +5V into-6V, and the LDO chip is adopted to stabilize the voltage of the-6V to the voltage of the-5V and is used by a transmitting branch grid electrode.
In the preferred embodiment of the invention, the hardware of the control part mainly comprises an FPGA, a differential input and output chip, an A/D sampling chip, a temperature measuring chip and a TTL driving chip. The FPGA selects a low-cost FPGA with a logic unit not less than 1 ten thousand gates as a main control logic device of the exciter; the A/D sampling chip adopts a 12-bit precision eight-channel sampling chip to sample the power supply voltage and the radio frequency detection voltage of each channel of the T/R component, and the number of the chips can be correspondingly expanded at any time according to the number of the channels of the T/R component; the temperature measuring chip adopts a 13-bit precision micro-power consumption digital temperature sensor to monitor the temperature of each channel of the T/R component in real time, and the number of the chips can be correspondingly expanded according to the number of the channels of the T/R component at any time.
The following describes in detail the modules configured by the FPGA module based on software functions:
in the preferred embodiment of the present invention, a command parsing module is built inside the FPGA module, and the command parsing module receives serial data transmitted from a wave control machine and sends control data obtained by parsing to a phase shift attenuation configuration module and a time sequence configuration module;
in the preferred embodiment of the present invention, a phase-shift attenuation configuration module is built inside the FPGA module, and the phase-shift attenuation configuration module receives the phase-shift attenuation data transmitted from the command parsing module, performs corresponding conversion operation according to a data format required by the T/R component, and sends the phase-shift attenuation data to the driving module according to the requirement of the interface working timing sequence, so as to send the phase-shift attenuation data to the T/R component;
in the preferred embodiment of the invention, a time sequence configuration module is built in the FPGA module, the time sequence configuration module receives a control signal, an A/D voltage sampling signal and a temperature signal from the command analysis module, correspondingly switches and enables protection operation on a transmitting gating signal and a receiving gating signal, and outputs a processed pulse signal to the driving module and the power supply part, and when a certain T/R component channel is over-voltage or over-temperature, the time sequence configuration module immediately sets a transmitting synchronous signal to be in an invalid state to play a role in protecting the component;
in the preferred embodiment of the invention, a BIT report module is constructed in the FPGA module, and the BIT report module collects the power supply voltage, the radio frequency detection voltage and the temperature state of each channel of the T/R component in real time and transmits the power supply voltage, the radio frequency detection voltage and the temperature state to the sending module according to an agreed format, so that a wave controller is reported for recording by a system.
In view of the above description it can be seen that: in the embodiment of the invention, the exciter adopts an equal ratio conversion framework with a preposed capacitor, meets the instantaneous response requirement of the T/R component by utilizing the characteristic of quick open-loop response of the equal ratio conversion framework, and simultaneously adopts a high-voltage input mode, so that the power transmission is reduced on one handThe current value in the transmission process reduces the heat loss of the system, on the other hand, the input-output voltage ratio is improved, and when the ratio is N, the capacity of the front capacitor can be synchronously reduced by N2The volume and the cost of the exciter are effectively controlled; meanwhile, the FPGA module is used for monitoring various working voltages and working temperatures of each channel of the T/R assembly in real time, the problem that the performance of the radar is affected due to assembly damage caused by insufficient monitoring protection is solved, meanwhile, accurate positioning of fault points in the debugging process of the array surface is facilitated, and the maintainability of the system is improved.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention.
Claims (6)
1. A high-voltage phased array radar exciter with multiple protection functions is characterized by comprising: a power supply section and a control section;
the power supply part comprises an equal ratio power supply conversion module, a transmitting branch leakage voltage modulation module, a receiving branch voltage modulation module and a transmitting branch grid voltage modulation module;
the input end of the geometric proportion power supply conversion module is used for being connected with a front surface power supply, and the output end of the geometric proportion power supply conversion module is used for being connected with a T/R component through a transmitting branch circuit leakage voltage modulation module, a receiving branch circuit voltage modulation module and a transmitting branch circuit grid voltage modulation module respectively;
the control part comprises an FPGA module, a sending module, a receiving module, an A/D sampling module, a temperature measuring module and a driving module;
the first output end of the FPGA module is used for being connected with a wave control machine through a sending module, and the second output end of the FPGA module is used for being connected with the T/R component through a driving module; the first input end of the FPGA module is used for being connected with a wave control machine through a receiving module, the second input end of the FPGA module is used for being connected with the T/R assembly through an A/D sampling module, and the third input end of the FPGA module is used for being connected with the T/R assembly through a temperature measuring module;
the equal ratio power conversionThe module adopts an equal ratio conversion framework with a preposed capacitor, utilizes the characteristic of fast open-loop response of the equal ratio conversion framework to meet the instantaneous response requirement of the T/R component, and simultaneously adopts a high-voltage input mode, so that on one hand, the current value in the power transmission process is reduced, the heat loss of a system is reduced, on the other hand, the input-output voltage ratio is improved, and when the ratio is N, the capacity of the preposed capacitor can be synchronously reduced by N2And the volume and the cost of the exciter are effectively controlled.
2. The high-voltage phased array radar exciter with multiple protection functions as claimed in claim 1, wherein the transmitting branch leakage voltage modulation module is configured to modulate and output the voltage output by the geometric proportion conversion module and the transmitting gating signal generated by the FPGA module logic to a drain voltage required by the transmitting branch power amplifier tube;
the receiving branch voltage modulation module is used for converting and stabilizing the voltage output by the equal ratio conversion module through DC/DC and outputting the voltage to be required by the receiving branch multifunctional chip and the low-noise amplifier chip;
and the transmitting branch gate voltage module is used for outputting the voltage output by the equal ratio conversion module to the gate voltage required by the transmitting branch power amplification tube after DC/DC transformation and LDO voltage stabilization.
3. The high-voltage phased array radar exciter with multiple protection functions as claimed in claim 1, wherein the FPGA module is configured to receive serial data from a wave control machine through a receiving module, process the serial data according to a protocol requirement, and send the processed serial data to the T/R module through a driving module, so as to configure a phase-shift attenuation value of a multifunctional chip inside the T/R module;
meanwhile, the FPGA module is also used for carrying out real-time detection and BIT statistics on various voltages, radio frequency detection voltages and component temperatures of the transmitting branch and the receiving branch through the A/D sampling module and the temperature measuring module, and when any working state exceeds a set range, the component is closed in time, the safety of the component is ensured, and BIT data are transmitted back to the wave control machine through the transmitting module.
4. The high-voltage phased array radar exciter with multiple protection functions as claimed in claim 1, wherein the a/D sampling module and the temperature measuring module correspond to the channels of the T/R assembly one by one, and are used for monitoring the working state of each channel and accurately locating the fault problem during fault elimination on the front surface.
5. The high-voltage phased array radar exciter with multiple protection functions according to claim 1, wherein the FPGA module comprises a command analysis module, a timing sequence configuration module, a phase shift attenuation module and a BIT report module;
the command analysis module is used for receiving serial data transmitted by the wave controller and transmitting control data obtained by analysis to the phase-shifting attenuation configuration module and the time sequence configuration module;
the phase-shifting attenuation configuration module is used for receiving the phase-shifting attenuation data transmitted from the command analysis module, carrying out corresponding conversion operation according to a data format required by the T/R assembly, sending the phase-shifting attenuation data to the driving module according to an interface working time sequence and further sending the phase-shifting attenuation data to the T/R assembly;
the time sequence configuration module is used for receiving the control signal, the A/D voltage sampling signal and the temperature signal from the command analysis module, carrying out corresponding switching and enabling protection operation on the transmitting gating signal and the receiving gating signal, outputting the processed pulse signal to the driving module and the power supply part, and immediately setting the transmitting synchronous signal to be in an invalid state when a certain T/R component channel is in overvoltage or overtemperature so as to play a role of protecting the component;
and the BIT report module acquires the power supply voltage, the radio frequency detection voltage and the temperature state of each channel of the T/R assembly in real time and transmits the power supply voltage, the radio frequency detection voltage and the temperature state to the sending module according to an agreed format, so that the report wave control machine is reported.
6. The phased array radar exciter with multiple protection functions as claimed in claim 1, wherein the geometric power conversion module adopts a +384V high-voltage input and +48V output capacitance pre-geometric conversion architecture, and when the input-output voltage ratio is 8: 1, the capacitance required for the exciter can be reduced by a factor of 64 accordingly.
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