A portable warning shield apparatus detection instrument

Abstract

The application relates to the radar technical field and proposes a portable warning shielding equipment detection instrument, which comprises a power module, a radio frequency signal generation module, a radio frequency signal modulation module, a radio frequency sampling module, a signal processing module, an input and output module and two ultra-wideband passive antennas. The detection instrument integrates power supply, radio frequency signal generation, modulation, sampling, processing and man-machine interaction, can complete the function detection of the warning shielding equipment without external instruments, has the advantages of high integration, simple operation and convenient carrying, improves the intuitiveness, accuracy and universality of the warning shielding equipment detection, and is perfectly suitable for the field rapid maintenance scene.

Description

Technical Field

[0001] This application relates to the field of radar technology, and in particular to a portable alarm shielding device detection instrument. Background Technology

[0002] Alarm jamming equipment is a specific type of electronic countermeasures jamming device. As a complex electronic device, it can detect weak radar transmission signals, analyze and process them, and then emit jamming signals of the same frequency and pulse width to interfere with enemy radar. Therefore, testing alarm jamming equipment requires a broadband microwave signal source, using a pulse signal source to modulate various radar signals, radiating them with a horn antenna, detecting the jamming signals emitted by the alarm jamming equipment, and finally using an expensive and bulky spectrum analyzer to receive the signals through another horn. This process consumes a large amount of equipment and is very inconvenient.

[0003] In order to quickly test whether the alarm shielding device is functioning properly, a portable alarm shielding device testing instrument must be developed. The purpose is to simulate radar signals and receive interference signals from the alarm shielding device without any external instruments at the user's site, thereby confirming the quality of the alarm shielding device. Utility Model Content

[0004] In view of this, this application proposes a portable alarm shielding device testing instrument, which can detect the receiving and interference capabilities of alarm shielding devices without the support of any external instruments at the user's site.

[0005] To achieve the above objectives, embodiments of this application propose a portable alarm shielding device testing instrument, comprising: a power module with a battery output of +5V, integrating a power boost and voltage regulation module, outputting +5V, and internally converting to +3.3V and -5V; a radio frequency signal generation module, the core of which is an LMX2592 chip, which generates a clock signal through an external high-stability crystal oscillator, and outputs the required radio frequency and amplitude after a series of transformations; a radio frequency signal modulation module, which achieves continuous wave to microwave conversion to a certain duty cycle by controlling the placement of a high-speed, high-isolation radio frequency switch between the radio frequency signal output terminal and the output antenna; and a radio frequency sampling module employing high sensitivity... The system includes a high-speed radio frequency detector for converting microwave signals to electrical signals; a signal processing module that uses a microcontroller to cyclically sample the detector's output, recording data when the current sampled value differs from the previous sampled value, and sending the maximum value of the received signal to the touchscreen display every second; an input / output module using a 10-inch touchscreen as the display and keyboard input device, divided into control and display sections, displaying the instrument's status and test results in real time; and two ultra-wideband passive antennas for transmitting and receiving, operating at frequencies from 2GHz to 18GHz, with right-hand circular polarization, connected to the instrument's housing using SMP-K connectors.

[0006] Optionally, the testing instrument has at least two USB ports. The first USB port is used to charge the battery in the power module, and the second USB port is used to directly power the testing equipment. The DC power supply or battery power supply can be switched via a single-pole three-throw switch. The power module outputs a stable 5V voltage to the microcontroller, RF signal generation module, RF signal modulation module, RF switch, and touch screen.

[0007] Optionally, the testing instrument also includes a communication module. The core of this module is a microcontroller. The microcontroller receives touchscreen commands via a serial port and reports the execution results. After parsing, the touchscreen commands are sent to the RF signal generation module via the SPI interface. The microcontroller's PC14 and PC15 ports are connected to a 32.768kHz crystal oscillator, PD0 and PD1 ports are connected to an 8MHz crystal oscillator, PA9 and PA10 ports are multiplexed as a serial port, PA0, PC13, and NRST ports are used as switches, PA1, PA2, and PA3 ports are used as indicator lights, and PA4, PA5, PA6, and PA7 ports are used as other ports. Ports PA8 and PA8 correspond to the SPI communication ports LECSB / NSS, SCK / CLK, MISO / MUX, MISO / DATA, and CE of the RF signal generation module, respectively. The microcontroller has a reserved SWD program download interface for programming and debugging. When the microcontroller receives serial port command data, if the command format conforms to the protocol, it parses the set frequency and amplitude internally, calculates the values ​​of the registers that need to be configured, combines them into an array, and outputs them byte by byte. If the command format conforms to the protocol, no processing is performed. The microcontroller enters a delay program based on the duration command, and sends a shutdown command after the delay time expires.

[0008] Optionally, the RF signal generation module is built around the LMX2592 chip, using a 4-layer board design. The LMX2592 chip supports a frequency range of 20MHz to 9.8GHz and integrates a VCO phase-locked loop function. The RF signal generation module is powered by 5V, which is converted to 3.3V on the board. The external clock of the LMX2592 chip is a 50MHz TCXO, and the data interface is a simple horn-shaped connector used for SPI data transmission and power supply. The board is equipped with an external reference frequency input or an onboard clock output interface. When the RF signal generation module receives the frequency, amplitude, and sweep frequency setting data sent by the microcontroller, it sets the internal registers, performs corresponding frequency division and multiplication operations, and outputs phase-locked signal. The onboard indicator lights up, and the RF power is output. The RF signal generation module has reserved an external crystal oscillator input interface and an external reference clock signal interface.

[0009] Optionally, the core of the RF signal modulation module is another microcontroller and an RF switch. The microcontroller generates a pulse signal with a certain frequency and duty cycle according to the protocol to control the RF switch. The RF switch is equipped with input and output ports, as well as a 5V power supply port and a modulation signal input port. The external high and low level control input TTL of the RF switch is connected to the PA10 terminal of the microcontroller used to generate the modulation signal. The RFC interface of the input terminal of the RF switch is connected to the output terminal of the RF signal generation module. The RF1 interface of the output terminal of the RF switch is connected to the transmitting antenna, and the RF2 interface of the output terminal is connected to a matched load.

[0010] Optionally, the core of the RF sampling module is an RF detector based on AD8317. The input INHI / INL0 of the RF detector and the receiving antenna are connected through an RF cable. The RF detector is powered by 5V and the detection output is a voltage signal with a negative slope. The VOUT port is sent to the microcontroller. The microcontroller samples the maximum value within 1 second through AD sampling and sends it to the touch screen for real-time display via serial port.

[0011] Optionally, the measuring instrument uses a 10-inch serial port touch screen as the input and output display device. The serial port touch screen is powered by 5V and is connected to the microcontroller's serial port via a TTL serial port. The serial port touch screen has settings for frequency, amplitude, and duration. By clicking the hotspots for frequency, amplitude, and duration, a keypad pops up. After entering the desired value, selecting the unit, and inputting the corresponding data, the output button is pressed. The serial port touch screen outputs the command as a string and returns the current microcontroller status data. The detection data sent by the microcontroller is transformed into a coordinate system and displayed on a graph with the horizontal axis representing time. As time progresses, the received curve is automatically plotted, and when the received data exceeds a threshold, it is highlighted.

[0012] The portable alarm shielding device testing instrument proposed in this application has the following beneficial effects.

[0013] First, the portable alarm shielding device testing instrument proposed in this application can test the functions and parameters of multiple alarm shielding devices, solving the problem of shortage of on-site testing instruments, enabling rapid repair and improving on-site repair efficiency.

[0014] Secondly, the portable alarm shielding device testing instrument proposed in this application enables offline testing of alarm shielding devices, with a high degree of automation and simple operation.

[0015] Third, the portable alarm shielding device testing instrument proposed in this application combines communication control technology software and hardware, saving a large amount of general-purpose instrument resources.

[0016] Fourth, the portable alarm shielding device testing instrument proposed in this application is small in size, lightweight, and convenient for technicians to carry during field support.

[0017] Fifth, the portable alarm shielding device testing instrument proposed in this application can reliably complete the debugging, calibration, testing, and maintenance of alarm shielding devices. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments or related technologies of this application, the accompanying drawings used in the description of the embodiments or related technologies of this application will be briefly introduced below. Obviously, the following drawings are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. The drawings described herein are only used to explain this application and are not intended to limit this application.

[0019] Figure 1 This is a schematic diagram illustrating the specific components of a portable alarm shielding device testing instrument provided in one embodiment of this application; Figure 2 This is a schematic diagram showing the circuit and connection details of a portable alarm shielding device testing instrument provided in one embodiment of this application; Figure 3 This is a schematic diagram of the housing and touch screen appearance of a portable alarm shielding device testing instrument provided in one embodiment of this application. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the various embodiments of this application will be described in detail below with reference to the accompanying drawings. Those skilled in the art will understand that many technical details have been presented in the embodiments of this application to facilitate better understanding. However, the technical solutions claimed in this application can be implemented even without these technical details and various variations and modifications based on the following embodiments. The division of the following embodiments is for ease of description and should not constitute any limitation on the specific implementation of this application. The following embodiments can be combined with and referenced by each other without contradiction.

[0021] One embodiment of this application discloses a portable alarm shielding device testing instrument. The implementation details of this portable alarm shielding device testing instrument are described below. The following details are provided for ease of understanding and are not essential for implementing this solution. The specific composition of the portable alarm shielding device testing instrument proposed in this embodiment can be as follows: Figure 1 As shown, it includes: a power supply module 11, an RF signal generation module 12, an RF signal modulation module 13, an RF sampling module 14, a signal processing module 15, an input / output module 16, a first ultra-wideband passive antenna 17, and a second ultra-wideband passive antenna 18. The circuit and connection of the portable alarm shielding device testing instrument proposed in this embodiment can be as follows: Figure 2 As shown.

[0022] Power module 11 has a battery output of +5V and an integrated power boost and voltage regulator module with an output of +5V. The internal circuitry also converts it to +3.3V and -5V.

[0023] The radio frequency signal generation module 12, whose core is the LMX2592 chip, uses a clock signal generated by an external high-stability crystal oscillator to output the required radio frequency and amplitude after a series of transformations.

[0024] The radio frequency signal modulation module 13 achieves the conversion of continuous wave to microwave with a certain duty cycle by controlling the placement of a high-speed, high-isolation radio frequency switch between the radio frequency signal output terminal and the output antenna.

[0025] The radio frequency sampling module 14 uses a high-sensitivity radio frequency detector to achieve high-speed conversion of microwave signals to electrical signals.

[0026] The signal processing module 15, through the output of the microcontroller cyclic sampling detector, records data when the current sampled value is different from the previous sampled value, and sends the maximum value of the received signal to the touch screen for display every second.

[0027] The input / output module 16 uses a 10-inch touchscreen as a display and keyboard input device, and is divided into two parts: control and display. It displays the status of the testing instrument and the test results in real time.

[0028] Two ultra-wideband passive antennas (first ultra-wideband passive antenna 17 and second ultra-wideband passive antenna 18) respectively realize the transmission and reception functions. The ultra-wideband passive antennas operate at frequencies from 2GHz to 18GHz, are right-handed polarized, and are connected to the housing of the testing instrument using SMP-K connectors.

[0029] The components and functions of the portable alarm shielding device testing instrument proposed in this embodiment will be described and explained in detail below.

[0030] 1) Power supply module.

[0031] The testing instrument has at least two USB ports. The first USB port is used to charge the battery in the power module, and the second USB port is used to directly power the testing equipment. DC power or battery power is selected via a single-pole three-throw switch. The power module outputs a stable 5V voltage to the microcontroller, RF signal generation module, RF signal modulation module, RF switch, and touchscreen.

[0032] 2) Communication control section.

[0033] The testing instrument is also equipped with a communication module. The core of the communication module is an STM32F103C8T6 microcontroller. The microcontroller receives touch screen commands (send radio frequency point, amplitude, duration, on and off commands) through the serial port and reports the execution results. After the touch screen commands are parsed by the microcontroller, they are sent to the radio frequency signal generation module through the SPI interface.

[0034] like Figure 2 As shown, the microcontroller's PC14 and PC15 ports are connected to a 32.768kHz crystal oscillator, PD0 and PD1 ports are connected to an 8MHz crystal oscillator, PA9 and PA10 ports are multiplexed as serial ports, PA0, PC13, and NRST ports are used as switches, PA1, PA2, and PA3 ports are used as indicator lights, and PA4, PA5, PA6, PA7, and PA8 ports correspond to the SPI communication ports LECSB / NSS, SCK / CLK, MISO / MUX, MISO / DATA, and CE of the RF signal generation module, respectively. The microcontroller has a reserved SWD program download interface for program burning and debugging.

[0035] When the microcontroller receives serial port command data, if the command format conforms to the protocol, it parses the set frequency and amplitude inside the program, calculates the values ​​of each register that need to be configured, combines them into an array, and outputs them byte by byte. If the command format conforms to the protocol, it does not process the data.

[0036] The microcontroller enters a delay program based on the duration command, and sends a close command after the delay time expires.

[0037] 3) Radio frequency signal generation module.

[0038] The RF signal generation module of the testing instrument is built around the LMX2592 chip and adopts a 4-layer board design. The LMX2592 chip is a low-noise broadband RF PLL that supports a frequency range of 20MHz to 9.8GHz. It integrates VCO phase-locked loop function and reserves external crystal oscillator input interface and external reference clock signal interface.

[0039] The RF signal generation module is powered by 5V and converted to 3.3V on the board. The external clock of the LMX2592 chip is a 50MHz TCXO. The data interface is a simple horn-shaped connector used for SPI data transmission and power supply. The circuit board is equipped with an external reference frequency input or an onboard clock output interface.

[0040] When the RF signal generation module receives the frequency, amplitude, and sweep frequency setting data sent by the microcontroller, it sets the internal registers, performs corresponding frequency division and frequency multiplication operations, and after phase locking, the onboard indicator lights up, and the RF power is output.

[0041] 4) Radio frequency signal modulation module.

[0042] The core of the RF signal modulation module is another STM32F103C8T6 microcontroller and an RF switch. The microcontroller generates pulse signals with a certain frequency and duty cycle according to the protocol to control the RF switch.

[0043] The RF switch is equipped with input and output ports, as well as a 5V power supply port and a modulation signal input port. The external high and low level control input TTL of the RF switch is connected to the PA10 terminal of the microcontroller used to generate the modulation signal. The input terminal RFC interface of the RF switch is connected to the output terminal of the RF signal generation module. The output terminal RF1 interface of the RF switch is connected to the transmitting antenna, and the output terminal RF2 interface is connected to a matched load.

[0044] 5) Radio frequency sampling module.

[0045] The core of the RF sampling module is an RF detector (RF power detector) based on AD8317. The inputs INHI / INL0 of the RF detector and the receiving antenna are connected through an RF cable. The RF detector is powered by 5V and the detection output is a voltage signal with a negative slope. The VOUT port is sent to the microcontroller. The microcontroller samples the maximum value within 1 second through AD sampling and sends it to the touch screen for real-time display via serial port.

[0046] 6) Touchscreen.

[0047] The testing instrument uses a 10-inch serial port touchscreen (a 7-inch screen can also be used) as the input and output display device. The serial port touchscreen is powered by 5V and connects to the microcontroller's serial port via a TTL serial port. The appearance of the testing instrument's casing and the touchscreen can be as follows: Figure 3 As shown.

[0048] The serial port touch screen has settings for frequency, amplitude, and duration. By clicking the hotspots for frequency, amplitude, and duration, a keypad will pop up. After entering the values ​​to be set, select the unit, and enter the corresponding data, press the output button. The serial port touch screen will output the commands as a string and return the current microcontroller status data.

[0049] The detection data sent by the microcontroller is transformed into a coordinate system and displayed on a graph with the horizontal axis representing the rolling time. The received power is automatically plotted as time progresses, and when the received data exceeds the threshold, it is highlighted.

[0050] 7) Testing process.

[0051] First, at a distance of 50 meters from the alarm shielding device, align both the transmitting and receiving antennas of the testing instrument with the antenna of the alarm shielding device. Next, power on the alarm shielding device, turn on the testing instrument, and then select the appropriate frequency and interference time according to your needs, and press the transmit button. Finally, receive the interference signal from the alarm shielding device to determine whether it passes the test.

[0052] The portable alarm shielding device testing instrument proposed in this embodiment has the following beneficial effects.

[0053] First, the portable alarm shielding device testing instrument proposed in this embodiment can test the functions and parameters of multiple alarm shielding devices, solve the problem of shortage of on-site testing instruments, enable rapid repair, and improve on-site repair efficiency.

[0054] Secondly, the portable alarm shielding device testing instrument proposed in this embodiment realizes offline testing of alarm shielding devices, with a high degree of automation and simple operation.

[0055] Third, the portable alarm shielding device testing instrument proposed in this embodiment combines communication control technology software and hardware, saving a large amount of general-purpose instrument resources.

[0056] Fourth, the portable alarm shielding device testing instrument proposed in this embodiment is small in size, lightweight, and convenient for technicians to carry during field support.

[0057] Fifth, the portable alarm shielding device testing instrument proposed in this embodiment can reliably complete the debugging, calibration, testing, and maintenance of alarm shielding devices.

[0058] It is worth noting that all modules involved in this embodiment are logical modules. In practical applications, a logical module can be a physical module, a part of a physical module, or an organic combination of multiple physical modules. Furthermore, to highlight the innovative aspects of this application, this embodiment does not introduce modules that are not closely related to solving the technical problems proposed in this application. However, this does not mean that other modules are absent from this embodiment.

[0059] It will be understood by those skilled in the art that the above embodiments are specific implementations of this application, and various changes in form and detail can be made in practical applications without departing from the spirit and scope of this application. For those skilled in the art, several improvements and modifications can be made without departing from the principles of this application, and these improvements and modifications are also considered to be within the scope of protection of this application.

Claims

1. A portable alarm shielding device testing instrument, characterized in that, include: The power module has a battery output of +5V and an integrated power boost and voltage regulator module that outputs +5V. The internal circuitry also converts it to +3.3V and -5V. The core of the radio frequency signal generation module is the LMX2592 chip. It uses a clock signal generated by an external high-stability crystal oscillator to perform a series of transformations and output the required radio frequency and amplitude. The radio frequency signal modulation module achieves the conversion of continuous wave to microwave with a certain duty cycle by placing a high-speed, high-isolation radio frequency switch between the radio frequency signal output terminal and the output antenna. The radio frequency sampling module uses a high-sensitivity radio frequency detector to achieve high-speed conversion of microwave signals to electrical signals; The signal processing module, through the microcontroller's cyclic sampling of the detector's output, records data when the current sampled value differs from the previous sampled value, and sends the maximum value of the received signal to the touch screen for display every second; The input / output module uses a 10-inch touchscreen as a display and keyboard input device, and is divided into two parts: control and display. It displays the status of the testing instrument and the test results in real time. Two ultra-wideband passive antennas are used to transmit and receive signals respectively. The ultra-wideband passive antennas operate at frequencies from 2 GHz to 18 GHz, are right-handed polarized, and are connected to the housing of the testing instrument using an SMP-K connector.

2. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The testing instrument has at least two USB ports. The first USB port is used to charge the battery in the power module, and the second USB port is used to directly power the testing equipment. The DC power supply or battery power supply can be switched via a single-pole three-throw switch. The power module outputs a stable 5V voltage to the microcontroller, RF signal generation module, RF signal modulation module, RF switch and touch screen.

3. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The testing instrument is also equipped with a communication module. The core of the communication module is a microcontroller. The microcontroller receives touch screen commands through the serial port and reports the execution results. After the touch screen commands are parsed by the microcontroller, they are sent to the radio frequency signal generation module through the SPI interface. The microcontroller's PC14 and PC15 ports are connected to a 32.768kHz crystal oscillator, PD0 and PD1 ports are connected to an 8MHz crystal oscillator, PA9 and PA10 ports are multiplexed as serial ports, PA0, PC13, and NRST ports are used as switches, PA1, PA2, and PA3 ports are used as indicator lights, and PA4, PA5, PA6, PA7, and PA8 ports correspond to the SPI communication ports LECSB / NSS, SCK / CLK, MISO / MUX, MISO / DATA, and CE of the RF signal generation module, respectively. The microcontroller has a reserved SWD program download interface for programming and debugging. When the microcontroller receives serial port command data, if the command format conforms to the protocol, it parses the set frequency and amplitude inside the program, calculates the values ​​of each register that need to be configured, and then combines them into an array and outputs them byte by byte. If the command format conforms to the protocol, no processing is performed. The microcontroller enters a delay program based on the duration command, and sends a close command after the delay time expires.

4. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The radio frequency signal generation module is built around the LMX2592 chip and adopts a 4-layer board design. The LMX2592 chip supports a frequency range of 20MHz to 9.8GHz and integrates VCO phase-locked loop function. The RF signal generation module is powered by 5V and converted to 3.3V on the board. The external clock of the LMX2592 chip is a 50MHz TCXO. The data interface is a simple horn head, used for SPI data transmission and power supply. The circuit board is equipped with an external reference frequency input or an onboard clock output interface. When the RF signal generation module receives the frequency, amplitude and sweep frequency setting data sent by the microcontroller, it sets the internal register, performs the corresponding frequency division and frequency multiplication operations, and after phase-locking output, the onboard indicator light illuminates and the RF power is output. The radio frequency signal generation module has reserved an external crystal oscillator input interface and an external reference clock signal interface.

5. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The core of the radio frequency signal modulation module is another microcontroller and a radio frequency switch. The microcontroller generates a pulse signal with a certain frequency and a certain duty cycle according to the protocol, which is used to control the radio frequency switch. The RF switch is equipped with input and output ports, as well as a 5V power supply port and a modulation signal input port. The external high and low level control input TTL of the RF switch is connected to the PA10 terminal of the microcontroller used to generate the modulation signal. The input terminal RFC interface of the RF switch is connected to the output terminal of the RF signal generation module. The output terminal RF1 interface of the RF switch is connected to the transmitting antenna, and the output terminal RF2 interface is connected to a matched load.

6. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The core of the RF sampling module is an RF detector based on AD8317. The inputs INHI / INL0 of the RF detector and the receiving antenna are connected through an RF cable. The RF detector is powered by 5V and the detection output is a voltage signal with a negative slope. The VOUT port is sent to the microcontroller. The microcontroller samples the maximum value within 1 second through AD sampling and sends it to the touch screen for real-time display via serial port.

7. The portable alarm shielding device testing instrument as described in claim 1, characterized in that, The testing instrument uses a 10-inch serial port touch screen as the input and output display device. The serial port touch screen is powered by 5V and is connected to the microcontroller serial port via a TTL serial port. The serial port touch screen has settings for frequency, amplitude, and duration. By clicking the hotspots for frequency, amplitude, and duration, a keypad will pop up. After entering the values ​​to be set, select the unit, and enter the corresponding data, press the output button. The serial port touch screen will output the commands as a string and return the current microcontroller status data. The detection data sent by the microcontroller is transformed into a coordinate system and displayed on a graph with the horizontal axis representing the rolling time. The received power is automatically plotted as time progresses, and when the received data exceeds the threshold, it is highlighted.

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