Universal radio control detector test system

Abstract

The invention provides a universal radio control detector test system. The universal radio control detector test system comprises a horn antenna, test equipment and an upper computer, the horn antenna is used for receiving a signal sent by a to-be-tested antenna and is connected with test equipment through a radio frequency cable; the test equipment comprises a radio frequency chip, an AD chip and an FPGA chip, the FPGA chip is used for running an FPGA program, and the FPGA program is used for setting hardware configuration, processing a received signal and sending a processed test result to the upper computer; the upper computer is used for selecting hardware configuration, switching a test mode and displaying a measurement result; the measurement mode supports a manual measurement mode and an automatic measurement mode; according to the invention, hardware configuration is set through an FPGA program, different scenes and different radio control detectors can be tested, and test indexes under a plurality of frequency points can be automatically tested in an automatic test mode; a threshold value and an LED lamp are arranged to cooperate with the fine tuning mechanism to adjust the horn antenna, so that the signal receiving effect can be improved, and the test equipment is high in integration level, good in portability and simple to operate.

Description

Technical Field

[0001] The invention belongs to the field of testing devices, and in particular relates to a universal radio-controlled detector testing system. Background Art

[0002] A radio-controlled detector is an electronic device that responds within a specified delay time when receiving a radio inquiry signal and then generates a reply signal. It has the function of receiving and sending signals. This type of device is widely used in aerospace, wireless communications, measurement and testing and other fields. When it is installed in a complete machine, it cannot be tested by line feeding and can only be tested by air feeding.

[0003] When using the air-feed method for testing, the conventional measurement method is to use standard instruments to build a measurement system. However, the test system built with standard instruments is more troublesome to adjust the frequency, and the automatic test function cannot be used. It is impossible to complete the measurement of indicators at multiple frequency points in one test process; the receiving frequency and the transmitting frequency cannot be set and are fixed values. If they need to be changed, only the hardware can be changed; if the received signal is weak, when the test result is wrong, it is impossible to determine whether it is due to the product itself or the test system; the operability is poor, the test is time-consuming, and the efficiency is low.

[0004] Therefore, a technical solution is needed to solve the problems of the test system built with standard instruments, such as the troublesome frequency adjustment, fixed receiving frequency and transmitting frequency, inability to measure measurement indicators at multiple frequency points in one process, and inability to determine the cause of the error due to weak received signal. Summary of the invention

[0005] To solve the above problems, the technical solution of the present invention is as follows:

[0006] A universal radio control detector test system, comprising: a horn antenna, a test device and a host computer;

[0007] The horn antenna is used to receive the signal sent by the antenna under test and is connected to the test equipment through a radio frequency cable;

[0008] The test equipment includes: a radio frequency chip, an AD chip and an FPGA chip, wherein the FPGA chip is used to run an FPGA program, and the FPGA program is used to set the hardware configuration, process the received signal and send the processed test results to the host computer through the RS422 serial port;

[0009] The host computer is used to select hardware configuration, switch test modes and display measurement results;

[0010] Among them, setting the hardware configuration is used to set the receiving signal strength threshold, set the test frequency, and set the receiving and sending frequencies;

[0011] Selecting the hardware configuration is used to select the frequency point configuration, receiving and sending frequency configuration that have been set in the measurement device, send them to the test device, and the FPGA software switches to the corresponding configuration;

[0012] The test mode supports manual testing and automatic testing.

[0013] The test frequency is set by the FPGA program through the RF chip, and multiple frequency configurations are supported.

[0014] Set the receiving and sending frequencies as the FPGA program sets the receiving and sending frequencies through the AD chip. The receiving and sending frequencies can be adjusted separately, and the receiving and sending frequencies support multiple configurations.

[0015] The device under test and the test system are set to the same address code and carrier frequency code parameters through the RS422 serial port.

[0016] In manual test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to measure the test indicators individually.

[0017] In the automatic test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to perform automatic tests at multiple frequency points.

[0018] The horn antenna also includes a fine-tuning mechanism for adjusting the position of the horn antenna.

[0019] The test equipment also includes an LED light for indicating whether the received signal strength reaches a signal strength threshold.

[0020] The host computer can store the test results in PDF format.

[0021] The present invention has the following beneficial effects:

[0022] 1) The test equipment integrates RF chip, AD chip and FPGA chip, achieving good portability and simple operation;

[0023] 2) The host computer makes the selection, and the FPGA program sets the hardware configuration. The receiving frequency and the transmitting frequency of the test equipment are adjusted separately. The test frequency point can be set as needed and multiple can be configured; different radio control detectors can be tested in different scenarios;

[0024] 3) The test equipment can switch the test mode. In the automatic test mode, the test indicators at multiple frequency points can be automatically tested;

[0025] 4) The test equipment sets the threshold and LED light to display whether the received signal strength reaches the signal strength threshold, and adjusts the horn antenna in time so that the antenna of the device under test can obtain a large signal strength regardless of the polarization mode, which is sufficient for testing;

[0026] 5) The host computer can store the test results in PDF format, which is convenient for connecting to a printer for printing. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 A diagram of the system composition provided for an embodiment of the present invention. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present invention are described in detail below with reference to the accompanying drawings.

[0029] The device under test is a radio control detector installed in the whole machine, and has an antenna under test inside for receiving and sending signals. The test method of the device under test in the present invention is an empty-feed test.

[0030] The system provided by the embodiment of the present invention is composed as follows Figure 1 As shown, a universal radio control detector test system includes: a horn antenna, a test device and a host computer;

[0031] 1. The horn antenna is used to receive the signal sent by the antenna under test and is connected to the test equipment through an RF cable;

[0032] Furthermore, the horn antenna also includes a fine-tuning mechanism for adjusting the position of the horn antenna, so that the horn antenna is directly opposite to the antenna of the device under test, so as to achieve a better signal reception effect.

[0033] 2. The test equipment includes: a radio frequency chip, an AD chip and an FPGA chip. The FPGA chip is used to run the FPGA program, and the FPGA program is used to set the hardware configuration, process the received signal and send the processed test results to the host computer through the RS422 serial port; the test equipment integrates the radio frequency chip, the AD chip and the FPGA chip, which is easy to carry and simple to operate.

[0034] Among them, setting the hardware configuration is used to set the receiving signal strength threshold, set the test frequency, and set the receiving and sending frequencies;

[0035] The test frequency is set by the FPGA program through the RF chip, and multiple frequency configurations are supported to meet the frequency requirements of different scenarios.

[0036] Set the receiving and sending frequencies. The FPGA program sets the receiving and sending frequencies through the AD chip. The receiving and sending frequencies can be adjusted separately. The receiving and sending frequencies support multiple configurations. It is suitable for testing different radio control detectors;

[0037] The test equipment also includes an LED light to display whether the received signal strength reaches the signal strength threshold. In the process of counting the minimum signal strength, the critical value is recorded as the threshold. If it is greater than the threshold, the LED lights up, indicating that the received test signal strength is sufficient and the test can be performed; if the LED does not light up, it means that the signal is weak and the test cannot be performed. At this time, the position of the horn antenna can be adjusted so that the horn antenna is facing the antenna of the device under test; so that the antenna of the device under test can obtain a large signal strength regardless of the polarization mode, which is sufficient for testing.

[0038] 3. The host computer is used to select hardware configuration, switch test mode and display measurement results;

[0039] Selecting the hardware configuration is used to select the frequency point configuration, receiving and sending frequency configuration that have been set in the measurement device, send them to the test device, and the FPGA software switches to the corresponding configuration.

[0040] Among them, the test mode supports manual testing and automatic testing.

[0041] Furthermore, in manual test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to measure the test indicators individually.

[0042] Furthermore, in the automatic test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to automatically test the test indicators at multiple frequency points.

[0043] The host computer can store the test results in PDF format, which is convenient for connecting to a printer for printing.

[0044] The device under test and the test system are set to the same address code and carrier frequency code parameters through the RS422 serial port.

[0045] According to the present invention, before performing an empty-feed test, the position of the horn antenna can be adjusted by a fine-tuning mechanism, the receiving signal strength threshold, the test frequency point, the receiving and sending frequencies can be set by using an FPGA program, whether the test can be performed can be determined by the on and off of an LED light, and the test frequency point can be selected, the receiving and sending frequency configurations can be set, and the test mode can be selected by a host computer; during the test, a horn antenna is used to receive a signal sent by the antenna of the device to be tested, and the signal is transmitted to the test equipment for processing, so that the measurement of indicators at multiple frequency points can be completed in one test process, and the test results after processing can be displayed in real time on the host computer interface; the host computer stores the test results in PDF format, and the test results can be directly printed by connecting a printer.

[0046] The test equipment of the present invention achieves the effects of good portability and simple operation by integrating a radio frequency chip, an AD chip and an FPGA chip; the host computer makes a selection, and the FPGA program sets the hardware configuration, the receiving frequency and the transmitting frequency of the test equipment are adjusted separately, the test frequency points can be set as needed and multiple test frequencies can be configured; different radio control detectors can be tested in different scenarios; the test equipment can switch the test mode, and the test indicators at multiple frequency points can be automatically tested in the automatic test mode; by setting a threshold and an LED light to display whether the received signal strength reaches the signal strength threshold, the horn antenna is adjusted in time, so that no matter what polarization mode the antenna of the test piece is in, a large signal strength can be obtained, and the strength is sufficient for testing; the host computer can store the test results in PDF format, which is convenient for connecting to a printer for printing.

[0047] The above disclosures are only several specific embodiments of the present invention; however, the present invention is not limited thereto, and any changes that can be conceived by those skilled in the art should fall within the protection scope of the present invention.

Claims

1. A universal radio-controlled detector test system, characterized in that: include: Horn antenna, test equipment and host computer; The horn antenna is used to receive the signal sent by the antenna under test and is connected to the test equipment through a radio frequency cable; The test equipment includes: a radio frequency chip, an AD chip and an FPGA chip, wherein the FPGA chip is used to run an FPGA program, and the FPGA program is used to set the hardware configuration, process the received signal and send the processed test results to the host computer through the RS422 serial port; The host computer is used to select hardware configuration, switch test modes and display measurement results; Among them, setting the hardware configuration is used to set the receiving signal strength threshold, set the test frequency, and set the receiving and sending frequencies; Selecting the hardware configuration is used to select the frequency point configuration, receiving and sending frequency configuration that have been set in the measurement device, send them to the test device, and the FPGA software switches to the corresponding configuration; The test mode supports manual testing and automatic testing.

2. A universal radio-controlled detector test system according to claim 1, characterized in that: The test frequency is set by the FPGA program through the radio frequency chip to set the frequency, and multiple frequency configurations are supported.

3. A universal radio-controlled detector test system according to claim 1, characterized in that: The setting of the receiving and sending frequencies is that the FPGA program sets the receiving and sending frequencies through the AD chip. The receiving and sending frequencies can be adjusted separately, and the receiving and sending frequencies support multiple configurations.

4. A universal radio-controlled detector test system according to claim 1, characterized in that: The device under test and the test system are set to the same address code and carrier frequency code parameters via the RS422 serial port.

5. A universal radio-controlled detector test system according to claim 1, characterized in that: In the manual test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to measure the test indicators individually.

6. A universal radio-controlled detector test system according to claim 1, characterized in that: In the automatic test mode, the host computer sends instructions to the FPGA chip, and the FPGA program controls the test equipment to perform automatic tests at multiple frequency points.

7. A universal radio-controlled detector test system according to claim 1, characterized in that: The horn antenna also includes a fine-tuning mechanism for adjusting the position of the horn antenna.

8. A universal radio-controlled detector test system according to claim 1, characterized in that: The test device also includes an LED light for displaying whether the received signal strength reaches a signal strength threshold.

9. A universal radio-controlled detector test system according to claim 1, characterized in that: The host computer can store the test results in PDF format.

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