Millimeter wave radar coverage distance testing device

Abstract

The utility model relates to a millimeter wave radar coverage distance testing device comprising a millimeter wave radar which is horizontally and fixedly arranged, a fan, an LED indicating lamp and a single-pole double-throw relay. Wherein the fan is used for simulating a moving target to be detected by the millimeter wave radar. The enabling end of the single-pole double-throw relay is connected with the output end of the millimeter wave radar, the normally closed end of the single-pole double-throw relay is connected with the fan and the red LED lamp, and the normally open end of the single-pole double-throw relay is connected with the yellow LED lamp. If the yellow LED lamp and the red LED lamp flicker alternately after the coverage distance test of the millimeter-wave radar starts for a period of time, it can be judged that the coverage distance test of the millimeter-wave radar is qualified. Compared with the prior art, the testing device provided by the utility model does not need to use radio frequency testing instruments such as a frequency spectrograph, a signal generator and the like, so that the cost is reduced. Moreover, the device is high in testing speed, saves the testing time, and is suitable for the testing of a large batch of millimeter wave radars.

Description

Technical Field

[0001] This utility model relates to the field of millimeter-wave radar testing instrument technology, and in particular to a millimeter-wave radar coverage distance testing device. Background Technology

[0002] Radar works by emitting electromagnetic waves, which are reflected back by a target. The radar then receives these echoes and analyzes the comparison between the emitted and reflected waves to obtain target information such as range, speed, and angle. When the frequency of the electromagnetic waves emitted by the radar is in the millimeter-wave band, i.e., 30–300 GHz, it is called millimeter-wave radar.

[0003] Millimeter-wave radar testing primarily involves two aspects: radio frequency (RF) signal performance testing and functional testing. RF signal performance testing mainly includes the radar's detection range resolution and accuracy. Testing the RF performance of the millimeter-wave radar front-end is crucial, especially in ensuring its stability, consistency, and accuracy. Currently, RF performance testing of the millimeter-wave radar front-end utilizes RF testing instruments, typically including spectrum analyzers, signal generators, and network analyzers. These instruments provide abundant RF performance data, helping engineers evaluate the performance of millimeter-wave radar systems.

[0004] RF test instruments offer accurate and consistent performance, but suffer from the following drawbacks: 1. The cost of test instruments, including spectrum analyzers, signal generators, and network analyzers, is high. 2. Testing is time-consuming and inefficient. Utility Model Content

[0005] In view of this, it is necessary to provide a millimeter-wave radar coverage distance testing device to overcome the above-mentioned deficiencies of the prior art.

[0006] To address the aforementioned problems, this utility model provides a millimeter-wave radar coverage distance testing device, comprising:

[0007] A horizontally fixed millimeter-wave radar, with its antenna panel facing upwards.

[0008] A fan, located above the antenna panel of the millimeter-wave radar, is used to simulate moving targets for millimeter-wave radar testing.

[0009] LED indicator lights, including yellow LEDs and red LEDs;

[0010] A single-pole double-throw relay, wherein the enable terminal of the single-pole double-throw relay is connected to the output terminal of the millimeter-wave radar, the normally closed terminal of the single-pole double-throw relay is connected to the fan and the red LED light respectively, and the normally open terminal of the single-pole double-throw relay is connected to the yellow LED light.

[0011] The control board mainboard, connected to a single-pole double-throw relay, is used to power the fan, millimeter-wave radar, LED lights, and the single-pole double-throw relay.

[0012] Preferably, the LED indicator also includes a green LED;

[0013] The millimeter-wave radar coverage distance testing device also includes a microcontroller, which is connected to the millimeter-wave radar, a green LED light, and a control board motherboard.

[0014] Preferably, the millimeter-wave radar coverage distance testing device also includes a cabinet and cabinet doors;

[0015] The millimeter-wave radar, fan, LED indicator, single-pole double-throw relay, and control board are all housed inside the cabinet.

[0016] Preferably, the millimeter-wave radar coverage distance testing device also includes:

[0017] The radar mounting plate is horizontally fixed inside the cabinet and is used to secure the millimeter-wave radar.

[0018] A movable panel, positioned above the millimeter-wave radar, is used to support the fan and can move up and down to change the distance between the fan and the millimeter-wave radar.

[0019] Preferably, the millimeter-wave radar coverage distance testing device also includes several screws;

[0020] The cabinet is connected to the movable panel by a number of screws, which are used to loosen or fix the movable panel.

[0021] The millimeter-wave radar coverage distance testing device provided by this utility model has the following advantages compared with the prior art:

[0022] 1) The test setup does not require additional RF test instruments such as spectrum analyzers and signal generators, which reduces costs.

[0023] 2) This device has a fast testing speed, saves testing time, and is suitable for testing large batches of millimeter-wave radar.

[0024] 3) The cabinet of this device can be placed on the millimeter-wave radar production line to achieve automated testing.

[0025] 4) This device is equipped with a cabinet and a cabinet door. Closing the cabinet door during testing can reduce external interference and improve the device's environmental adaptability. Attached Figure Description

[0026] Figure 1 A schematic diagram of the structure of the millimeter-wave radar coverage distance testing device provided in this embodiment of the utility model;

[0027] Figure 2 This is a flowchart of the millimeter-wave radar coverage distance test provided in this embodiment of the utility model.

[0028] In the attached diagram, 1: Radar mounting plate;

[0029] 2: Millimeter-wave radar;

[0030] 3: Movable panel;

[0031] 4: Fan;

[0032] 5: Screws;

[0033] 6: Cabinet doors;

[0034] 7: LED indicator lights (including red and yellow dual-color lights and green light);

[0035] 8: Control board / main board;

[0036] 9: Single-pole double-throw relay. Detailed Implementation

[0037] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which constitute a part of this application and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not intended to limit the scope of the present invention.

[0038] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0039] Currently, the RF performance of millimeter-wave radar front-ends is assessed using RF testing instruments, including spectrum analyzers, signal generators, and network analyzers. While RF testing instruments offer accurate and consistent performance, they suffer from the following drawbacks: 1. The cost of the testing instruments, including spectrum analyzers, signal generators, and network analyzers, is high. 2. Testing is time-consuming and inefficient.

[0040] In view of this, the present invention provides a millimeter-wave radar coverage distance testing device. This testing device does not require the use of additional spectrum analyzers, signal generators, or other equipment, thus reducing costs and improving testing efficiency. The following will elaborate and describe this device through several embodiments.

[0041] Figure 1 A schematic diagram of the structure of the millimeter-wave radar coverage distance testing device provided in this embodiment of the utility model. Figure 1As shown, the millimeter-wave radar coverage range testing device includes at least:

[0042] A horizontally fixed millimeter-wave radar 2, with its antenna panel facing upwards.

[0043] Fan 4, located above the antenna panel of millimeter-wave radar 2, is used to simulate moving targets for millimeter-wave radar testing;

[0044] The LED (Light Emitting Diode) indicator light includes a yellow LED and a red LED; in this embodiment, the yellow LED and the red LED constitute a red-yellow dual-color light.

[0045] A single-pole double-throw relay 9 is provided. The enable terminal of the single-pole double-throw relay 9 is connected to the output terminal of the millimeter-wave radar 2. The normally closed terminal of the single-pole double-throw relay 9 is connected to the fan 4 and the red LED light respectively. The normally open terminal of the single-pole double-throw relay 9 is connected to the yellow LED light.

[0046] The main control board 8 is connected to the single-pole double-throw relay 9 and is used to power the fan 4, millimeter-wave radar 2, LED lights, and the single-pole double-throw relay 9.

[0047] Specifically, before the coverage distance test of millimeter-wave radar 2 begins, a fan 4 is first placed above the antenna panel of millimeter-wave radar 2, and the distance between the fan 4 and millimeter-wave radar 2 is recorded. In this embodiment, the fan 4 simulates a moving target, and the millimeter-wave radar coverage distance testing device is used to test whether the millimeter-wave radar can accurately detect the moving target at the current distance. In this embodiment, the principle of the coverage distance test of millimeter-wave radar 2 is as follows:

[0048] (1) When the test begins, the millimeter-wave radar and fan are powered by the control board motherboard. In the initial state, the normally closed terminal of the single-pole double-throw relay is turned on, the fan is powered on and runs, and the red LED light is lit.

[0049] (2) When the millimeter-wave radar detects a moving target, the millimeter-wave radar output terminal will generate an output signal. This output signal is transmitted to the enable terminal of the relay. At this time, the normally open terminal of the single-pole double-throw relay is turned on, which makes the yellow LED light up. At this time, the normally closed terminal of the single-pole double-throw relay is turned off, which makes the fan power off and the red LED light go out.

[0050] (3) When the fan is powered off and the millimeter-wave radar cannot detect moving targets, the normally open terminal of the single-pole double-throw relay will open, causing the yellow LED to turn off, and the normally closed terminal of the single-pole double-throw relay will be turned on, causing the fan to be powered on and running, and the red LED to light up.

[0051] (4.1) If the yellow LED and red LED flash alternately after a period of time has passed since the start of the millimeter-wave radar coverage distance test, it can be determined that the millimeter-wave radar coverage distance test is qualified, that is, the millimeter-wave radar can accurately detect moving targets at the current distance.

[0052] (4.2) If, after a period of time during the test, the red LED remains constantly lit while the yellow LED remains off, it indicates that the millimeter-wave radar has not detected a moving target. In this case, the millimeter-wave radar is deemed not to meet the trigger coverage requirement, and the coverage distance test is deemed unqualified. Here, "trigger coverage" refers to the coverage area within which the radar can detect moving targets.

[0053] (4.3) If the yellow LED light remains on and the red LED light does not light up after a period of time since the start of the test, it indicates that the millimeter-wave radar has been continuously detecting moving targets other than the fan. At this time, the millimeter-wave radar is determined to be in a state of continuous triggering without a target, and the performance test is unqualified.

[0054] In a preferred embodiment of this utility model, the LED indicator 7 further includes a green LED;

[0055] The millimeter-wave radar coverage distance testing device also includes a microcontroller (not shown in the attached figure), which is connected to the millimeter-wave radar, the green LED light, and the control board motherboard 8.

[0056] Specifically, a lit green LED indicates that the radar detection is successful. A microcontroller is connected to the green LED via a MOSFET, and the green LED is driven by the microcontroller, which can be an STM32F0051R8T6. Although Figure 1 The microcontroller is not shown in the diagram. Those skilled in the art will understand that the microcontroller program can be set to detect a 3-second high / low level output from the millimeter-wave radar 25 seconds after it powers on. During this time, the yellow and red LEDs will flash alternately with a 3-second interval, indicating that the millimeter-wave radar coverage distance test is successful. The microcontroller will then output a high level to activate the MOSFET, illuminating the green LED to indicate that the millimeter-wave radar test is successful. If the microcontroller detects a continuous low or high level output from the radar 25 seconds after power-on, resulting in a constantly lit red or yellow LED, the microcontroller will not output a high level, and the green LED will not illuminate, indicating that the millimeter-wave radar test is unsuccessful.

[0057] In a preferred embodiment of the present invention, the millimeter-wave radar coverage distance testing device further includes a cabinet and a cabinet door 6.

[0058] Reference Figure 1The millimeter-wave radar 2, fan 4, LED indicator 7, single-pole double-throw relay 9, and control board 8 are all housed inside the cabinet. Closing the cabinet door 6 during testing reduces external interference and improves the device's environmental adaptability.

[0059] In a preferred embodiment of this utility model, referring to Figure 1 The millimeter-wave radar coverage range testing device also includes:

[0060] Radar mounting plate 1 is horizontally fixed inside the cabinet and is used to fix the millimeter-wave radar.

[0061] The movable panel 3 is located above the millimeter-wave radar and is used to support the fan. It can move up and down to change the distance between the fan and the millimeter-wave radar.

[0062] A number of screws 5 are used to connect the cabinet to the movable panel 3. The screws 5 are used to loosen or fix the movable panel 3.

[0063] Specifically, refer to Figure 1 When it is necessary to adjust the distance between the fan and the millimeter-wave radar, loosen the movable panel 3 using screw 5, adjust the distance, and then fix the movable panel 3 to complete the distance adjustment between the fan and the millimeter-wave radar. This device can be used to test the coverage distance of the millimeter-wave radar at different distances.

[0064] Figure 2 This is a flowchart of the millimeter-wave radar coverage distance test provided in this embodiment of the utility model, with reference to... Figure 1 and Figure 2 In actual millimeter-wave radar dynamic ranging test scenarios, the millimeter-wave radar coverage distance test process includes the following steps:

[0065] 1. Prepare the millimeter-wave radar and burn the test standard data into the millimeter-wave radar.

[0066] 2. Place the millimeter-wave radar on the radar mounting plate 1, with the radar antenna panel facing upwards and press it firmly in place. Adjust the movable panel 3 that supports the fan to a position 17 cm away from the radar, and tighten the screws 5 to secure the fan so that it cannot move on its own.

[0067] 3: Power on the radar; it will automatically enter test mode. Close cabinet door 6 and wait for the test results.

[0068] 4.1: If the dual-color LED light flashes red and yellow alternately after 15 to 25 seconds, and the green light turns on within a 2 to 3 second interval between the alternations, then the millimeter-wave radar coverage distance test is deemed to be qualified.

[0069] 4.2: If the red LED light remains constantly on, the yellow LED light is off, and the green LED light is off after 15-25 seconds, it indicates that the millimeter-wave radar did not detect the movement of the fan. The millimeter-wave radar is deemed to fail the trigger coverage test and the coverage distance test is unqualified.

[0070] 4.3 If, after 15 to 25 seconds, the yellow LED remains on while the red and green LEDs remain off, it indicates that the millimeter-wave radar is continuously detecting moving targets other than the fan. In this case, the millimeter-wave radar is determined to be in a state of continuous triggering without a target, and the performance test is deemed unqualified.

[0071] The millimeter-wave radar coverage distance testing device provided by this utility model has the following advantages compared with the prior art:

[0072] 1) The test setup does not require additional RF test instruments such as spectrum analyzers and signal generators, which reduces costs.

[0073] 2) This device has a fast testing speed, saves testing time, and is suitable for testing large batches of millimeter-wave radar.

[0074] 3) The cabinet of this device can be placed on the millimeter-wave radar production line to achieve automated testing.

[0075] 4) This device is equipped with a cabinet and a cabinet door. Closing the cabinet door during testing can reduce external interference and improve the device's environmental adaptability.

[0076] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise expressly specified and limited, the terms "installed," "connected," or "linked" should be interpreted broadly, for example, as a fixed connection, a detachable connection, or an integral connection; a mechanical connection or an electrical connection; a direct connection or an indirect connection via an intermediate medium; or a connection within two elements. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0077] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0078] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A millimeter wave radar coverage range test apparatus, characterized by, include: A horizontally fixed millimeter-wave radar, with its antenna panel facing upwards. A fan, located above the antenna panel of the millimeter-wave radar, is used to simulate moving targets for millimeter-wave radar testing. LED indicator lights, including yellow LEDs and red LEDs; A single-pole double-throw relay, wherein the enable terminal of the single-pole double-throw relay is connected to the output terminal of the millimeter-wave radar, the normally closed terminal of the single-pole double-throw relay is connected to the fan and the red LED light respectively, and the normally open terminal of the single-pole double-throw relay is connected to the yellow LED light. The control board mainboard, connected to a single-pole double-throw relay, is used to power the fan, millimeter-wave radar, LED lights, and the single-pole double-throw relay.

2. The millimeter wave radar range testing device of claim 1, wherein, The LED indicator also includes a green LED; The millimeter-wave radar coverage distance testing device also includes a microcontroller, which is connected to the millimeter-wave radar, a green LED light, and a control board motherboard.

3. The millimeter-wave radar coverage distance testing device according to claim 1, characterized in that, It also includes the cabinet body and cabinet doors; The millimeter-wave radar, fan, LED indicator, single-pole double-throw relay, and control board are all housed inside the cabinet.

4. The millimeter wave radar range testing device of claim 3, wherein, Also includes: A radar mounting plate is horizontally fixed inside the cabinet and used to fix the millimeter-wave radar. A movable panel, positioned above the millimeter-wave radar, is used to support the fan and can move up and down to change the distance between the fan and the millimeter-wave radar.

5. The millimeter wave radar range testing device of claim 4, wherein, It also includes several screws; The cabinet is connected to the movable panel by a number of screws, which are used to loosen or fix the movable panel.

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