A detection device and a detection method for a power optimization circuit

Abstract

A detection device and a detection method for a power optimization circuit belong to the technical field of circuit detection equipment, and include a power supply, a control switching unit, a function generator, an oscilloscope and a digital multimeter. The power supply includes a first DC regulated power supply for providing a working power supply for the power optimization circuit; a second DC regulated power supply for providing a working power supply for the control switching unit; and a function generator for providing a stable synchronous pulse signal for the power optimization circuit; the oscilloscope is connected to the power optimization circuit to measure the amplitude and form of the output signal of the power optimization circuit; and the digital multimeter is connected to the power optimization circuit to measure the voltage value. A detection method is also designed, and through the detection device of the power optimization circuit, the power optimization circuit can be tested, and the technical status of the power optimization circuit can be quickly and accurately confirmed. By adding signals in steps and time, the fault part can be accurately located and repaired, and the equipment status can be quickly restored.

Description

Technical Field

[0001] The present invention belongs to the technical field of power optimization circuit detection, and in particular relates to a power optimization circuit detection device and a detection method. Background Art

[0002] The transmitter is one of the important components of certain aviation equipment. Considering the conversion efficiency, most of them use klystrons to amplify the power of microwave signals. With the industrial upgrading of domestic electronic devices, some of them use solid-state power modules with gallium arsenide or gallium nitride as the main power amplifier chip to replace the klystron transmitter;

[0003] The power optimization circuit is specially configured for the klystron transmitter and is an important component circuit used to optimize and adjust the transmitter working curve. Due to the nonlinear characteristics of the klystron, the power optimization circuit is required to dynamically adjust the detection signal power control voltage after the transmitter is turned on to ensure that the effective power of the klystron output signal remains at the maximum, thereby ensuring the maximum detection power and distance of the equipment;

[0004] At present, for the testing of this type of power optimization circuit, it is necessary to carry out functional testing in conjunction with the entire transmitter system. Chinese patent CN111273243A (published on June 12, 2020) discloses a radar comprehensive test platform and designs an automatic test platform for the radar system. The output parameters need to be tested in the whole machine state. The test time is long and the faulty components cannot be directly located. Therefore, when the power optimization circuit fails, there is a lack of effective means and methods for fast and accurate fault location and repair. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a detection device for a power optimization circuit which is simple to operate and has complete functions, and at the same time to provide an effective, safe and reliable detection method, which can quickly and conveniently realize the performance test of the power optimization circuit and solve the problem of fault locating the power optimization circuit. According to different working conditions, the corresponding signal mechanism can be added to effectively detect whether the function of the power optimization circuit is normal and whether the performance meets the requirements, and confirm the fault point, so as to provide technical parameters and basis for maintenance personnel to troubleshoot.

[0006] To achieve the above object, the present invention adopts the following technical scheme: a detection device for a power optimization circuit, comprising a power supply, a control switching unit, a function generator, an oscilloscope and a digital multimeter;

[0007] The power supply includes a first DC regulated power supply and a second DC regulated power supply. The first DC regulated power supply is used to provide three working power supplies for the power optimization circuit; the second DC regulated power supply provides one working power supply for the control switching unit, and the function generator provides a stable synchronous pulse signal for the power optimization circuit; the oscilloscope is connected to the power optimization circuit and is used to measure the amplitude and form of the output signal of the power optimization circuit; the digital multimeter is connected to the power optimization circuit and is used to measure the voltage value.

[0008] The control switching unit is connected to the first DC regulated power supply, the second DC regulated power supply, and the power optimization circuit;

[0009] The control switching unit includes an integrated detection signal generating circuit, which simulates the detection signal output by the klystron according to the working state of the power optimization circuit, generates a triangular wave and a square wave signal with a certain duty cycle through the detection signal generating circuit, simulates the working characteristics of the klystron under different working states, uses the triangular wave to simulate the sawtooth wave frequency modulation state of the klystron, and uses the square wave to simulate the square wave amplitude modulation state of the klystron.

[0010] The detection signal generating circuit includes a timer NE555, an adjustable resistor R1, an adjustable resistor R2, a resistor R3, a resistor R4, an adjustable resistor R5, an adjustable resistor R6, a filter capacitor C1 and a filter capacitor C2.

[0011] The timer NE555 includes a positive power supply voltage terminal, a threshold terminal, a discharge terminal, a trigger terminal, a control terminal and an output terminal. The second DC regulated power supply is connected to the positive power supply voltage terminal of the timer NE555 via a switch; the threshold terminal of the timer NE555 is connected to the second DC regulated power supply through an adjustable resistor R1, and is grounded after being connected to the adjustable resistor R6 through a resistor R3, and the output of the resistor R3 terminal is a triangular wave; the discharge terminal of the timer NE555 is connected to the trigger terminal and then grounded through a filter capacitor C1, and is connected to the resistor R3 after passing through an adjustable resistor R2; the control terminal of the timer NE555 is grounded through a filter capacitor C2; the output terminal of the timer NE555 is grounded through an adjustable resistor R5 and a resistor R4, and the output terminal of the adjustable resistor R5 is a square wave.

[0012] The present invention also provides a detection method based on the detection device of the power optimization circuit as described above, comprising the following steps:

[0013] Power indication level test method: connect the function generator to the control switching unit, connect the control switching unit to the power optimization circuit, connect the oscilloscope to the control switching unit, and measure the power indication level;

[0014] Main control optimization voltage test method: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, turn on the "control" command switch of the control transfer unit, and measure the main control optimization voltage output signal;

[0015] Scan mode test method: connect the function generator to the control adapter unit, connect the control adapter unit to the power optimization circuit, connect the oscilloscope to the control adapter unit, turn on the "control" command switch of the control adapter unit, gradually increase the high-level voltage value of the detection signal, use a digital multimeter to detect the voltage value of the power indication level output terminal, and when the voltage signal is detected to be greater than 3V, measure the high-level voltage value of the detection signal;

[0016] There are two working modes in tracking mode: power indication voltage no change judgment function and power indication voltage change judgment function;

[0017] The power indication voltage no change judgment function test method is: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, adjust the triangle wave high level, turn on the "control" command switch, and use the oscilloscope to detect the waveform of the main control optimization voltage output signal;

[0018] Power indication voltage has change judgment function: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, adjust the triangle wave output high level, turn on the "control" command switch, and use the oscilloscope to detect the waveform of the main control optimization voltage output signal.

[0019] The beneficial effects of the present invention are: it can simulate the actual power-on process of the tested product, provide detection conditions, simulate the working process in different modes by controlling the change of the electrical state of the product in the test, detect the functions of each module of the product, and thus judge the product performance. This process can quickly and accurately confirm the product status, and can also perform power-on verification on some circuit modules, providing a simple and effective detection and verification platform for product repair and testing. From the actual use effect of the tested product, the present invention is safe, convenient and fast to operate, ensuring the safety and reliability of the equipment and meeting the use requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a structural block diagram of the detection device of the present invention;

[0021] Figure 2 It is a schematic diagram of the panel layout of the control switching unit of the present invention;

[0022] Figure 3 This is a schematic diagram of the detection signal generation principle of the control switching unit of the present invention. DETAILED DESCRIPTION

[0023] The technical solution of the present invention will be described clearly and completely below in conjunction with the drawings of this specification. It should be noted that the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] See also Figure 1-Figure 3 A detection device for a power optimization circuit includes a power supply, a control switching unit, a function generator, an oscilloscope and a digital multimeter, wherein the power supply includes a first DC regulated power supply and a second DC regulated power supply, the first DC regulated power supply is used to provide three working power supplies of +15V, -15V and +5V for the power optimization circuit; the second DC regulated power supply provides a +5V working power supply for the control switching unit;

[0025] The control adapter unit is connected to the first DC regulated power supply, the second DC regulated power supply, and the power optimization circuit. The control adapter unit includes an integrated detection signal forming circuit that can form square wave signals and triangular wave signals with a certain frequency and duty cycle. The duty cycle and amplitude adjustment knobs can be used to adjust the duty cycle and amplitude of the square wave and triangular wave, respectively.

[0026] The function generator is connected to the power optimization circuit and is used to generate a stable clock signal.

[0027] The oscilloscope is used to measure the form of the master control optimization voltage output signal.

[0028] The digital multimeter is used to measure the voltage value of the power indication level.

[0029] like Figure 2 As shown, the control adapter unit is connected to the power optimization circuit through a 15-pin socket, and the 15-pin socket, namely XP2, is installed on the power optimization circuit. The +15V and -15V power supplies, the digital power indication level, the control quality, and the power indication level on the power optimization circuit are all connected to the control adapter unit through XP2. The digital power indication level, the control command, and the power indication level are connected to the digital multimeter and the oscilloscope through the control adapter unit. The synchronization signal input is directly connected to the function generator, the detection signal input is connected to the detection signal generating circuit of the control adapter unit, and the optimized voltage output is directly connected to the oscilloscope.

[0030] like Figure 3As shown, the detection signal generating circuit includes a timer NE555, an adjustable resistor R1, an adjustable resistor R2, a resistor R3, a resistor R4, an adjustable resistor R5, an adjustable resistor R6, a filter capacitor C1 and a filter capacitor C2, and the +5V power supply of the second DC regulated power supply is connected to the positive power supply voltage terminal of the timer NE555 through a switch; the threshold end of the timer NE555 is connected to the power supply +5V through the adjustable resistor R1, and is grounded after being connected to the adjustable resistor R6 through the resistor R3, and the output of the resistor R3 end is a triangular wave; the discharge end of the timer NE555 is connected to the trigger end and is grounded through the filter capacitor C1, and is connected to the resistor R3 after passing through the adjustable resistor R2; the control end of the timer NE555 is grounded through the filter capacitor C2; the output end of the timer NE555 is grounded through the adjustable resistor R5 and the resistor R4, and the output end of the adjustable resistor R5 is a square wave.

[0031] Where R1 and R2 are used to adjust the frequency and duty cycle:

[0032] Period T = (R1 + 2R2) C * ln2

[0033] Duty cycle q = (R1 + R2) / (R1 + 2R2)

[0034] R5 is used to adjust the square wave amplitude:

[0035] V1=R4*VCC / (R4+R5)

[0036] When the voltage of R5 is adjusted to 0V, the output amplitude is 5V;

[0037] R6 is used to adjust the triangle wave amplitude:

[0038] V2=R6*V / (R3+R6)

[0039] A detection method for a power optimization circuit is implemented based on the detection device for the power optimization circuit described above, and comprises the following steps:

[0040] Power indication level test method: Set one channel of the function generator to the clock frequency FCLK and connect it to the synchronization signal input terminal of the power optimization circuit. Adjust the square wave signal of the control adapter unit to f0 and connect it to the detection signal input terminal of the power optimization circuit. Turn on the ±15V and +5V switches of the control adapter unit and use a digital multimeter to measure the voltage value of the power indication level.

[0041] Main control optimization voltage test method: Set one channel of the function generator to the clock frequency FCLK and connect it to the synchronization signal input terminal of the power optimization circuit, connect the oscilloscope to the power indication level of the control adapter unit, turn on the "control instruction" switch, and use the oscilloscope to observe the main control optimization voltage output signal.

[0042] Scan mode test method: that is, compare and judge the function with the fixed value, set one channel of the function generator to the clock frequency FCLK and connect it to the synchronization signal input terminal of the power optimization circuit, adjust the square wave signal of the control adapter unit to f1 and connect it to the detection signal input terminal of the power optimization circuit, turn on the ±15V and +5V switches of the control adapter unit, turn on the "control instruction" switch, gradually increase the f1 signal amplitude, use a digital multimeter to read the "digital power indication level" output DC voltage on the adapter platform, when the digital multimeter reads a voltage signal greater than 3V, record the f1 signal amplitude.

[0043] The power indication voltage no change judgment function test method is: set one channel of the function generator to the clock frequency FCLK and connect it to the synchronization signal input terminal of the power optimization circuit, adjust the square wave signal of the control adapter unit to f2 and connect it to the detection signal input terminal of the power optimization circuit, turn on the ±15V and +5V switches of the control adapter unit, turn on the "control instruction" switch, and use an oscilloscope to detect the waveform of the main control optimization voltage output signal of the control adapter unit.

[0044] Power indication voltage change judgment function: Set one channel of the function generator to the clock frequency FCLK and connect it to the synchronization signal input terminal of the power optimization circuit, adjust the triangle wave signal of the control adapter unit to f3 and connect it to the detection signal input terminal of the power optimization circuit, turn on the ±15V and +5V switches of the control adapter unit, turn on the "control instruction" switch, and use an oscilloscope to detect the waveform of the main control optimization voltage output signal.

[0045] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0046] Parts of the present invention not described in detail are prior art.

Claims

1. A method for testing a power optimization circuit, characterized in that: The power optimization circuit is specially configured for the klystron transmitter and is an important component circuit used to optimize and adjust the transmitter working curve. Due to the nonlinear characteristics of the klystron, the power optimization circuit is required to dynamically adjust the transmitter's detection signal power control voltage to ensure that the effective power of the klystron output signal remains at the maximum, thereby ensuring the maximum detection power and distance of the equipment; The test method is implemented by a detection device, which includes a power supply, a control switching unit, a function generator, an oscilloscope and a digital multimeter. The power supply includes a first DC regulated power supply and a second DC regulated power supply. The first DC regulated power supply is used to provide three working power supplies for the power optimization circuit; the second DC regulated power supply provides one working power supply for the control switching unit, and the function generator provides a stable synchronous pulse signal for the power optimization circuit; the oscilloscope is connected to the power optimization circuit to measure the amplitude and form of the output signal of the power optimization circuit; the digital multimeter is connected to the power optimization circuit to measure the voltage value; The test method includes: Power indication level test method: connect the function generator to the control switching unit, connect the control switching unit to the power optimization circuit, connect the oscilloscope to the control switching unit, and measure the power indication level; Main control optimization voltage test method: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, turn on the "control" command switch of the control transfer unit, and measure the main control optimization voltage output signal; Scan mode test method: connect the function generator to the control adapter unit, connect the control adapter unit to the power optimization circuit, connect the oscilloscope to the control adapter unit, turn on the "control" command switch of the control adapter unit, gradually increase the high-level voltage value of the detection signal, use a digital multimeter to detect the voltage value of the power indication level output terminal, and when the voltage signal is detected to be greater than 3V, measure the high-level voltage value of the detection signal; There are two working modes in tracking mode: power indication voltage no change judgment function and power indication voltage change judgment function; Power indication voltage no change judgment function: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, adjust the square wave high level, turn on the "control" command switch, and use the oscilloscope to detect the waveform of the main control optimization voltage output signal; Power indication voltage has change judgment function: connect the function generator to the control transfer unit, connect the control transfer unit to the power optimization circuit, connect the oscilloscope to the control transfer unit, adjust the triangle wave output high level, turn on the "control" command switch, and use the oscilloscope to detect the waveform of the main control optimization voltage output signal.

2. The method for testing a power optimization circuit according to claim 1, characterized in that: The control switching unit is connected to the first DC regulated power supply, the second DC regulated power supply, and the power optimization circuit; the control switching unit includes an integrated detection signal generating circuit, which simulates the detection signal output by the klystron according to the working state of the power optimization circuit, generates a triangular wave and a square wave signal with a certain duty cycle through the detection signal generating circuit, simulates the working characteristics of the klystron under different working states, uses the triangular wave to simulate the sawtooth wave frequency modulation state of the klystron, and uses the square wave to simulate the square wave amplitude modulation state of the klystron.

3. The method for testing a power optimization circuit according to claim 2, characterized in that: The detection signal generating circuit includes a timer NE555, an adjustable resistor R1, an adjustable resistor R2, a resistor R3, a resistor R4, an adjustable resistor R5, an adjustable resistor R6, a filter capacitor C1 and a filter capacitor C2; The timer NE555 includes a positive power supply voltage terminal, a threshold terminal, a discharge terminal, a trigger terminal, a control terminal and an output terminal. The second DC regulated power supply is connected to the positive power supply voltage terminal of the timer NE555 via a switch; the threshold terminal of the timer NE555 is connected to the second DC regulated power supply through an adjustable resistor R1, and is grounded through a resistor R3 and an adjustable resistor R6. The output of the resistor R3 terminal is a triangular wave; The discharge end of the timer NE555 is connected to the trigger end and then grounded through the filter capacitor C1, and at the same time connected to the resistor R3 through the adjustable resistor R2; the control end of the timer NE555 is grounded through the filter capacitor C2; the output end of the timer NE555 is grounded through the adjustable resistor R5 and the resistor R4, and the output end of the adjustable resistor R5 is a square wave.

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