A radar transmitter power testing device

Abstract

This application belongs to the field of radar transmitter power testing technology. This application provides a radar transmitter power testing device. In this embodiment, the SMA input port is connected to the power output coupler interface of the transmitter under test. After the transmitter is powered on, the power button is turned on to start the device; the shift switch is adjusted to the corresponding position, and the start button is pressed to test; the RF power detector, operational amplifier, AD conversion chip, CPLD chip, and microcontroller sequentially process the signal output by the transmitter under test to obtain the test results, which are then displayed on a monitor. This device is portable and can test the power and pulse width parameters of the transmitter under test in the field; it can also perform offline transmitter testing, has a high degree of automation, and is simple to operate. Simultaneously, this device can reliably complete the debugging, acceptance testing, inspection, and maintenance of the transmitter.

Description

Technical Field

[0001] This disclosure relates to the field of radar transmitter power testing technology, and in particular to a radar transmitter power testing device. Background Technology

[0002] The radar transmitter is a crucial component of radar, responsible for generating and amplifying the transmitted radio frequency (RF) signal according to instructions from the main control computer. However, the most important parameters for the quality of the transmitted RF signal are power and, secondly, whether the radiated signal envelope width meets the requirements.

[0003] However, existing high-power microwave meters are bulky, heavy, and difficult to move, making them unsuitable for field testing and hindering on-site radar support. If the radar transmitter malfunctions, the entire radar system risks failure.

[0004] Therefore, it is necessary to improve one or more of the problems existing in the above-mentioned related technical solutions.

[0005] It should be noted that this section is intended to provide background or context for the technical solutions of this disclosure as set forth in the claims. The description herein does not constitute an admission that it is prior art simply because it is included in this section. Utility Model Content

[0006] The purpose of this disclosure is to provide a radar transmitter power testing device, thereby overcoming at least to some extent one or more problems caused by the limitations and defects of related technologies.

[0007] According to an embodiment of this disclosure, a radar transmitter power testing device is provided, the device comprising:

[0008] The housing includes a display, start button, stop button, reset button, power button, gear selector switch, and SMA input port. Inside the housing are a microwave receiving circuit assembly, a microcontroller, and a power supply assembly.

[0009] The power button is electrically connected to the power supply unit. The microcontroller is electrically connected to the display, power supply unit, start button, stop button, reset button, and shift switch. The power supply unit is electrically connected to the microwave receiving circuit assembly. The SMA input port is electrically connected to the microwave receiving circuit assembly.

[0010] Furthermore, the microwave receiving circuit assembly includes:

[0011] CPLD chip, AD conversion chip, operational amplifier, and RF power detector; among which,

[0012] The CPLD chip, AD conversion chip, operational amplifier, and RF power detector are electrically connected in sequence, and the CPLD chip is electrically connected to the microcontroller.

[0013] Furthermore, the power supply component includes:

[0014] Battery, step-up transformer, B0505 ​​module and 78M05 module; among which,

[0015] The battery is electrically connected to the boost module, which is electrically connected to the B0505 ​​module and the 78M05 module respectively. The 78M05 module is electrically connected to the microcontroller, CPLD chip, AD conversion chip and RF power detector respectively. Both the boost module and the B0505 ​​module are electrically connected to the operational amplifier.

[0016] Furthermore, a display driving circuit is also provided inside the housing, which is electrically connected to the display and the microcontroller respectively.

[0017] Furthermore, a backlight key is also provided on the housing, which is electrically connected to the display driver circuit.

[0018] Furthermore, the power supply component also includes:

[0019] Backlight power supply; among which,

[0020] The backlight power supply is electrically connected to the backlight key and the display driver circuit, respectively.

[0021] Furthermore, a buzzer is provided on the housing, and the buzzer is electrically connected to the display driver circuit.

[0022] Furthermore, the gear shift switch is a seven-speed shift switch.

[0023] Furthermore, the housing is equipped with LED indicator lights, which are electrically connected to the microcontroller.

[0024] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0025] In the embodiments of this disclosure, the radar transmitter power testing device described above, on the one hand, connects the SMA input port to the power output coupler interface of the transmitter under test. After the transmitter is powered on, the power button is turned on to start the device; the shift switch is adjusted to the corresponding position, and the start button is pressed to test; the RF power detector, operational amplifier, AD conversion chip, CPLD chip, and microcontroller sequentially process the signal output by the transmitter under test to obtain the test results, which are then displayed on a monitor. On the other hand, this device is portable and can test the power and pulse width parameters of the transmitter under test in the field; it can also perform offline transmitter testing, has a high degree of automation, and is easy to operate. Simultaneously, this device can reliably complete the debugging, acceptance, testing, and maintenance of the transmitter. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1 This illustration shows a schematic diagram of the structure of a radar transmitter power testing device according to an exemplary embodiment of the present disclosure;

[0028] Figure 2 This diagram illustrates the principle block diagram of a radar transmitter power testing apparatus in an exemplary embodiment of this disclosure;

[0029] Figure 3 A schematic diagram of a display showing a radar transmitter power testing apparatus in an exemplary embodiment of this disclosure is shown.

[0030] In the diagram: 1. Housing; 2. Display; 3. Start button; 4. Stop button; 5. Reset button; 6. Power button; 7. Gear shift switch. Detailed Implementation

[0031] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, they are provided so that this disclosure will be more comprehensive and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0032] Furthermore, the accompanying drawings are merely illustrative diagrams of embodiments of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. Some block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically independent entities.

[0033] This example embodiment first provides a radar transmitter power testing device. (Reference) Figure 1 As shown, the radar transmitter power testing device may include:

[0034] The housing (1) is equipped with a display (2), a start button (3), a stop button (4), a reset button (5), a power button (6), a shift switch (7), and an SMA input port. Inside the housing (1) are a microwave receiving circuit assembly, a microcontroller, and a power supply assembly.

[0035] The power button (6) is electrically connected to the power supply component. The microcontroller is electrically connected to the display (2), the power supply component, the display (2), the start button (3), the stop button (4), the reset button (5), and the shift switch (7). The power supply component is electrically connected to the microwave receiving circuit component. The SMA input port is electrically connected to the microwave receiving circuit component.

[0036] Using the aforementioned radar transmitter power testing device, on the one hand, the SMA input port is connected to the power output coupler interface of the transmitter under test. After the transmitter is powered on, the power button (6) is turned on to start the device; the shift switch (7) is adjusted to the corresponding position, and the start button (3) is pressed to start the test; the RF power detector, operational amplifier, AD conversion chip, CPLD chip and microcontroller process the signal output by the transmitter under test in sequence to obtain the test results, and display the test results on the display (2). On the other hand, the device is portable and can test the power and pulse width of the transmitter under test in the field; it can also perform offline transmitter testing, with a high degree of automation and simple operation. At the same time, the device can reliably complete the debugging, acceptance, testing and maintenance of the transmitter.

[0037] Below, we will refer to Figures 1 to 3 The various parts of the radar transmitter power testing apparatus described in this example embodiment will be explained in more detail.

[0038] In one embodiment, the power supply section (i.e., power assembly) of the radar transmitter power testing device uses a rechargeable battery to output +5V. To ensure voltage stability, a power boost and regulation module is designed to output +5V. The internal circuitry further converts this to +3.3V and -5V.

[0039] The RF sampling section (i.e., microwave receiving circuit assembly) of the radar transmitter power testing device employs a high-sensitivity RF detector and high-speed AD and CPLD for rapid sampling and conversion. It automatically searches for the maximum RF power and pulse width within a given range, transmitting these values ​​to the microcontroller via a parallel port.

[0040] The signal processing section (i.e., the microcontroller) of the radar transmitter power testing device: The microcontroller cyclically samples the CPLD output, and records the data when the value differs from the previous value. Based on the input band selection switch, it corrects the test data to achieve testing of radar transmitters in different bands.

[0041] The radar transmitter power testing device includes the following input / output components: The input component uses a 7-position rotary toggle switch with real-time microcontroller scanning. The output component uses a segmented display screen; after screen partitioning, it displays the signal amplitude, battery level, real-time power, maximum power, and pulse width. Upon signal acquisition, LEDs flash and a buzzer sounds.

[0042] The specific usage steps are as follows:

[0043] 1. The SMA RF input is connected to the transmitter power output coupler interface;

[0044] 2. Power on the transmitter and turn on the tester switch;

[0045] 3. Switch to the corresponding frequency band and press the start button (3) to test;

[0046] 4. It can be stopped or reset;

[0047] 5. Turn on the backlight switch as needed;

[0048] 6. Turn off the power after the test is complete.

[0049] In a specific embodiment, such as Figure 2 The diagram shown is a schematic block diagram of a radar transmitter power testing device. The radar transmitter power testing device mainly includes:

[0050] 1. Power supply section: The device charges the battery with +5V through the external reserved USB interface. The battery output is connected to the main power switch. One output of the power switch is connected to the input of the boost module (i.e., the boost transformer), and the other is connected to the analog signal input terminal of the microcontroller's AD sampling, which is used to detect the battery power. The boost module outputs a stable 5V voltage to the three-terminal regulator, outputting 3.3V, which supplies the microcontroller, CPLD, AD sampling circuit, display driver circuit, and LCD screen (i.e., display (2)). The other 5V output of the boost module is connected to the B0505 ​​module, which generates -5V to supply the negative voltage of the op-amp, and the 5V is connected to the positive voltage of the op-amp for power supply.

[0051] 2. Microwave Receiver Circuit: The signal output from the transmitter is coupled to a low-power signal via a coupler port and connected to the SMA input port of the transmitter test equipment via an RF cable. The other end of the SMA is connected to an RF power detector. The detector output is connected to the operational amplifier input of the signal sampling circuit. After amplification by the operational amplifier, the signal is sent to the AD conversion circuit. The AD conversion chip output is sent to the CPLD for power combining. When the CPLD detects a valid sampled value, it saves the value and repeats the sampling over a period of microseconds. When a new valid value is detected, the stored value is replaced. When a valid value is detected for the first time, clock counting begins until an invalid value is sampled. The clock interval is calculated as the basis for the pulse width. The CPLD transmits the data in real time to the microcontroller's P4 and P5 ports via a parallel interface.

[0052] 3. Signal Processing Section:

[0053] This device uses the C8051F040 microcontroller chip. It operates on a 3.3V power supply and a 22MHz crystal oscillator. External interfaces P4 and P5 are used to receive data detected by the CPLD. Port P7 is used to detect the selection signal from the frequency band switch. Port P1 is used to output the display drive signal. Corresponding bits on port P0 are used to drive the diodes and buzzer using battery voltage. Port P2 is used to detect the start, stop, and reset buttons.

[0054] The main program uses a while loop to continuously sample data from the CPLD, battery voltage, and frequency band selection signal. It continuously checks and stores the maximum value of the sampled values.

[0055] The timer interrupt function, once entered, will proceed to the corresponding sub-function based on the button pressed:

[0056] When the start button is true: The current value is compared with the previous value, the current maximum value is compared with the previous maximum value, and the current battery level is compared with the previous battery level. If the value changes, the corresponding output array value is updated. (The displayed output array value corresponds one-to-one with the broken code screen display). The real-time output signal amplitude is divided into ten levels, and the corresponding array value is updated according to the real-time signal value. Specifically, due to the fast signal processing speed and frequent updates to the display array, flickering of the output value may occur. Therefore, the average of 20 samples is taken before output. Furthermore, the value correction section uses a lookup table method to correct the output value according to different frequency bands.

[0057] 4. Input Devices: The input devices consist of five individual function buttons: start, stop, reset, backlight, and power button (6). The power button connects to the battery output and the boost module input, while the backlight button connects to the 3.3V and backlight power input. The other three start, stop, and reset buttons are connected to the microcontroller's PORT port, with the other end grounded. Pressing a button sends a low level to the corresponding port of the microcontroller, and releasing it sends a high level to the microcontroller through a pull-up resistor. When any button is pressed, the corresponding port of the microcontroller is grounded. After the microcontroller detects the grounding signal, it delays for 20 microseconds and detects a low level again (keyboard debouncing), then records the button value.

[0058] The input device also includes a 5-position shift switch (7), each corresponding to a different band selection. These include C / X / KA / KU / K; when any position is selected, a low-level signal is sent to the corresponding port of the microcontroller. The microcontroller determines the input band selection by detecting the different port levels.

[0059] 5. Output devices

[0060] like Figure 3 The diagram shows a schematic of the display (2).

[0061] ① Screen Driver Circuit: The driver circuit uses the LM1621 chip and communicates with the microcontroller via serial port. It has four lines: chip select (CS), read (RD), write (WR), and data (DATA). The chip's internal storage circuit displays a 1 or 0, corresponding to a specific segment of the screen output. When the display needs updating, the microcontroller writes data to the storage circuit via the serial port. The chip refreshes the output of the common terminal and segment pins, displaying the data value (0 or 1), thus controlling the screen display.

[0062] ① The output section uses a segmented display. After the screen is divided, it displays the amplitude of the signal (segments) and the battery power indicator (%), the real-time power (dBm) and the maximum power (dBm), and the pulse width (uS).

[0063] ②The buzzer sounds and the LED indicator (used to indicate that a signal input has been detected) flashes after the captured signal is greater than (7dBm).

[0064] The aforementioned radar transmitter power testing device allows for several functionalities. First, the SMA input port is connected to the power output coupler interface of the transmitter under test. After the transmitter is powered on, the power button is turned on to start the device. The shift switch is adjusted to the appropriate position, and the start button is pressed. The RF power detector, operational amplifier, AD converter chip, CPLD chip, and microcontroller sequentially process the signal output from the transmitter under test to obtain the test results, which are then displayed on a monitor. Second, the device is portable and can be used to test the power and pulse width parameters of the transmitter under test in the field. It also enables offline transmitter testing, offering a high degree of automation and simple operation. Furthermore, the device can reliably complete transmitter debugging, acceptance testing, inspection, and maintenance.

[0065] In addition, the radar transmitter power testing device proposed in this application can test two functions and parameters at the same time, which solves the problem of shortage of field testing instruments, enables rapid maintenance, and improves field maintenance efficiency.

[0066] The portable radar transmitter test instrument (i.e. radar transmitter power test device) proposed in this application realizes offline testing of the transmitter, has a high degree of automation, and the software interface is simple and easy to operate.

[0067] The portable radar transmitter testing instrument proposed in this application combines the software and hardware of radio frequency control technology, saving a large number of general-purpose instruments.

[0068] The portable radar transmitter testing instrument proposed in this application is small in size and lightweight, making it convenient for technicians to carry during field support.

[0069] The portable radar transmitter testing instrument proposed in this application can reliably complete the debugging, acceptance, testing, and maintenance of the transmitter.

[0070] It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., in the above description indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this disclosure.

[0071] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0072] In the embodiments of this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0073] In embodiments of this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0075] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the utility models disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A radar transmitter power testing device, characterized in that, The device includes: The housing includes a display, start button, stop button, reset button, power button, gear selector switch, and SMA input port. Inside the housing are a microwave receiving circuit assembly, a microcontroller, and a power supply assembly. The power button is electrically connected to the power supply unit. The microcontroller is electrically connected to the display, power supply unit, start button, stop button, reset button, and shift switch. The power supply unit is electrically connected to the microwave receiving circuit assembly. The SMA input port is electrically connected to the microwave receiving circuit assembly.

2. The radar transmitter power test apparatus of claim 1, wherein, The microwave receiving circuit assembly includes: CPLD chip, AD conversion chip, operational amplifier, and RF power detector; among which, The CPLD chip, AD converter chip, operational amplifier and RF power detector are electrically connected in sequence. The CPLD chip is electrically connected to the microcontroller and the SMA input port is electrically connected to the RF power detector.

3. The radar transmitter power test apparatus of claim 2, wherein, The power supply components include: Battery, step-up transformer, B0505 ​​module and 78M05 module; among which, The battery is electrically connected to the boost module, which is electrically connected to the B0505 ​​module and the 78M05 module respectively. The 78M05 module is electrically connected to the microcontroller, CPLD chip, AD conversion chip and RF power detector respectively. Both the boost module and the B0505 ​​module are electrically connected to the operational amplifier.

4. The radar transmitter power test apparatus of claim 1, wherein, The housing also contains a display driver circuit, which is electrically connected to the display and the microcontroller.

5. The radar transmitter power test apparatus of claim 4, wherein, The housing is also equipped with a backlight key, which is electrically connected to the display driver circuit.

6. The radar transmitter power test apparatus of claim 5, wherein, The power supply components also include: Backlight power supply; among which, The backlight power supply is electrically connected to the backlight key and the display driver circuit, respectively.

7. The radar transmitter power test apparatus of claim 1, wherein, A buzzer is installed on the housing, and the buzzer is electrically connected to the display driver circuit.

8. The radar transmitter power test apparatus of claim 1, wherein, The gear shift switch is a seven-speed shift switch.

9. The radar transmitter power test apparatus of claim 1, wherein, The housing is equipped with an LED indicator light, which is electrically connected to the microcontroller.

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