Tool applied to radar calibration

Abstract

The utility model discloses a tool applied to radar calibration, aiming at the problem of low calibration data accuracy of the existing radar calibration device, a laser bracket, a laser range finder, an X-axis adjusting assembly, a connecting plate, a front supporting plate, a rear supporting plate, a fixing sleeve, a rear top plate, a rotary top plug and other parts are arranged on a radar fixing platform. The radar level meter is effectively fixed through a universal tool clamp composed of an X-axis adjusting assembly, a connecting plate, a front supporting plate, a rear supporting plate, a fixing sleeve, a rear top plate and a rotary top plug. In addition, the two sides of the front supporting plate are each fixedly provided with a laser support, and each laser support is fixedly provided with a laser range finder; the transmitting end face of the laser range finder and the transmitting end face of the radar level meter are located on the same vertical plane, and the accuracy and reliability of radar calibration detection data are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of radar calibration, and in particular relates to a tooling used for radar calibration. Background Art

[0002] Radar is a radar system used to transmit and receive electromagnetic waves to measure the distance to the target. After the radar transmits electromagnetic waves to the target location, it will receive the electromagnetic waves reflected from the target, compare and process the transmitted electromagnetic waves and the reflected electromagnetic waves, and the process of obtaining the target's location information is called radar calibration.

[0003] Radar level meter is a kind of radar, which has many varieties, models and sizes. In order to ensure the performance of radar level meter products during the production process, radar level meter products need to be strictly tested. The accuracy of radar level meter product performance is measured by comparing the data of radar level meter calibration detection with the data detected by laser rangefinder. However, due to the different antenna shapes of radar level meter products, operators need to frequently replace the corresponding tooling to fix the radar level meter. After the radar level meter is fixed, the design defects of the existing tooling make it impossible to ensure that the starting plane of the radar level meter antenna emitting electromagnetic waves is on the same vertical plane as the starting plane of the auxiliary equipment laser rangefinder, thereby affecting the accuracy and reliability of the detection data. Utility Model Content

[0004] The utility model aims to provide a tooling used for radar calibration, which can realize fast fixing of radar level meters of different models, and at the same time ensure that the end face of the antenna of the radar level meter emitting electromagnetic waves and the emitting end face of the laser rangefinder are on the same vertical plane, thereby improving the accuracy of detection data.

[0005] To solve the above problems, the technical solution of the utility model is:

[0006] A tooling used for radar calibration, comprising: a mobile reflection platform and a radar fixed platform, wherein the mobile reflection platform is fixed in front of the radar fixed platform and is used to reflect electromagnetic waves emitted by a radar level meter and laser emitted by a laser rangefinder on the radar fixed platform;

[0007] The radar fixed platform includes a mounting platform, a laser bracket, a laser rangefinder, an X-axis adjustment assembly, a connecting plate, a front support plate, a rear support plate, a fixing sleeve, a rear top plate and a rotating top plug;

[0008] The X-axis adjustment assembly and the front support plate are fixedly mounted on the mounting platform, and the X-axis adjustment assembly is connected to the rear support plate via the connecting plate; the rear support plate is located behind the front support plate and is parallel to the front support plate;

[0009] The front support plate and the rear support plate are provided with grooves, and the fixing sleeve is fixed in the groove of the rear support plate to preliminarily fix the radar level meter;

[0010] The rear top plate is fixed on the mounting platform and is located behind the rear support plate; the rotating top plug is installed on the rear top plate and is used to abut against the rear end of the radar level meter;

[0011] The rear support plate is driven by the X-axis adjustment assembly to be close to the front support plate, and at the same time, the rotating top plug is close to the rear end of the radar level meter to achieve clamping and fixing of the radar level meter;

[0012] A laser bracket is fixedly mounted on both sides of the front support plate, and the laser rangefinder is fixedly mounted on each laser bracket; and the emitting end surface of the laser rangefinder is in the same vertical plane as the emitting end surface of the radar level meter.

[0013] According to one embodiment of the utility model, the mobile reflection platform includes a reflection plate bracket, an antenna reflection plate, a guide rail, a driving motor and a sliding member, the sliding member is slidably connected to the guide rail, the driving motor is installed on the sliding member, and drives the sliding member to move on the guide rail; the antenna reflection plate is fixedly connected to the reflection plate bracket, and the reflection plate bracket is connected to the driving motor.

[0014] According to an embodiment of the utility model, the tooling further comprises a wave absorbing platform, and the wave absorbing platform is located on the side of the movable reflection platform;

[0015] The wave absorbing platform comprises a wave absorbing sponge, a fixed track and a bracket, wherein the bracket is installed on the fixed track, and the wave absorbing sponge is fixed on the bracket.

[0016] According to an embodiment of the utility model, a plurality of absorbing components are arranged on the fixed track, and the absorbing components include a bracket and an absorbing sponge.

[0017] According to an embodiment of the utility model, the fixing sleeve is detachably connected to the groove of the rear support plate, and different types of fixing sleeves are adapted according to the model of the radar level meter.

[0018] Due to the adoption of the above technical solution, the utility model has the following advantages and positive effects compared with the prior art:

[0019] In one embodiment of the utility model, a tooling used for radar calibration aims at the problem of low accuracy of calibration data of existing radar calibration devices. A laser bracket, a laser rangefinder, an X-axis adjustment assembly, a connecting plate, a front support plate, a rear support plate, a fixing sleeve, a rear top plate, a rotating top plug and other components are installed on a radar fixed platform. The radar level meter is effectively fixed by a universal tooling fixture composed of the X-axis adjustment assembly, the connecting plate, the front support plate, the rear support plate, the fixing sleeve, the rear top plate and the rotating top plug. In addition, a laser bracket is fixedly arranged on both sides of the front support plate, and a laser rangefinder is fixedly arranged on each laser bracket. The emitting end face of the laser rangefinder is in the same vertical plane as the emitting end face of the radar level meter, so as to improve the accuracy and reliability of the radar calibration detection data. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of a tooling structure used for radar calibration in one embodiment of the utility model;

[0021] Figure 2 It is a structural schematic diagram of a mobile reflection platform in one embodiment of the utility model;

[0022] Figure 3 It is a structural schematic diagram of a radar installation platform in one embodiment of the utility model;

[0023] Figure 4 It is a schematic structural diagram of a wave absorbing platform in one embodiment of the utility model.

[0024] Description of reference numerals:

[0025] 110: mobile reflection platform; 111: driving motor; 112: reflection plate bracket; 113: guide rail; 114: antenna reflection plate; 115: sliding part; 118: absorbing sponge; 119: fixed track; 120: bracket; 121: rear support plate; 122: fixing sleeve; 123: rear top plate; 124: front support plate; 125: radar level meter; 126: rotating top plug; 127: X-axis adjustment assembly; 128: mounting table; 129: laser rangefinder; 131: connecting plate; 132: laser bracket; 130: absorbing platform; 140: radar fixed platform; 150: cabinet. DETAILED DESCRIPTION

[0026] The following is a further detailed description of a tooling for radar calibration proposed by the utility model in conjunction with the accompanying drawings and specific embodiments. The advantages and features of the utility model will become more apparent according to the following description and claims.

[0027] Please see Figure 1The present embodiment provides a tooling for radar calibration, which includes a mobile reflection platform 110 and a radar fixed platform. The mobile reflection platform 110 is fixed in front of the radar fixed platform 140 and is used to reflect the electromagnetic waves emitted by the radar level meter and the laser emitted by the laser rangefinder on the radar fixed platform.

[0028] For details, please see Figure 2 The mobile reflection platform 110 provided in this embodiment includes a reflection plate bracket 112, an antenna reflection plate 114, a guide rail 113, a driving motor 111 and a sliding member 115. The antenna reflection plate 114 is mounted on the reflection plate bracket 112, the reflection plate bracket 112 is mounted on the driving motor 111, and the driving motor 111 and the sliding member 115 are mounted on the guide rail 113 together. When the driving motor 111 is started, it drives the sliding member 115 to move on the guide rail 113, and indirectly enables the antenna reflection plate 114 to move forward and backward along the guide rail 113.

[0029] Please see Figure 3 The radar fixing platform 140 provided in this embodiment includes a connecting plate 131, a rear support plate 121, a replaceable fixing sleeve 122, a front support plate 124, a test product radar level meter 125, a rear top plate 123, a rotating top plug 126, an X-axis adjustment assembly 127, a mounting platform 128, a laser bracket 132 and a laser rangefinder 129. The fixing sleeve 122 is installed in the groove of the rear support plate 121, the rear support plate 121 is installed on the connecting plate 131 by welding, the connecting plate 131 is installed on the X-axis adjustment assembly 127 by screws, the rotating top plug 126 is installed on the rear top plate 123 by threading, and the laser rangefinder 129 is installed on the laser bracket 132 by screw connection. The X-axis adjustment assembly 127, the rear top plate 123 and the front support plate 124 are installed on the mounting platform 128 by screw connection. The test product radar level meter 125 is installed on the fixed sleeve 122, and the test product radar level meter 125 is in a clamped state by adjusting the X-axis adjustment component 127 and the rotating top plug 126. That is, the rear support plate 121 is driven by the X-axis adjustment component 127 to approach the front support plate 124, and at the same time, the rotating top plug 126 is close to the rear end of the radar level meter 125, so as to achieve the front and rear clamping fixation of the radar level meter 125. Specifically, the rear support plate 121 is driven by the X-axis adjustment component 127 to approach the front support plate 124 until the front end of the radar level meter 125 is stuck in the groove of the front support plate 124 and pressed against the front support plate 124. Under the joint action of the rear support plate 121 and the fixed sleeve 122, the front end of the radar level meter 125 is pressed, and the initial fixation of the radar level meter is completed. Then, the rotating top plug 126 is rotated to make it abut against the rear end of the radar level meter 125 , so as to achieve front and rear clamping and fixing of the radar level meter 125 .

[0030] In practical applications, the fixing sleeve 122 is a replaceable nylon fixing sleeve, and different types of fixing sleeves are adapted according to the model of the radar level meter. The X-axis adjustment component 127 can be a feed-type screw.

[0031] A laser bracket 132 is fixed on both sides of the front support plate 124, and a laser rangefinder 129 is fixed on each laser bracket 132; and the emitting end surface of the laser rangefinder 129 is in the same vertical plane as the emitting end surface of the radar level meter 125, so that the accuracy of the calibration data of the radar level meter is improved. Since it is necessary to obtain the radar ranging distance and the laser ranging distance data when performing radar calibration, the two data are compared. If the comparison result is within the error allowable range, it is determined that the calibration is passed. The acquisition of the radar ranging distance and the laser ranging distance data is obtained by measuring the signals emitted by the radar level meter and the laser rangefinder. In order to make the obtained radar ranging distance and laser ranging distance data within the error range, the radar level meter and the laser rangefinder need to be on the same horizontal line to ensure that the distance from the signal transmitting end to the signal receiving end of the two is consistent. Based on this, this embodiment uses the above-mentioned radar fixed platform to make the emitting end surface of the laser rangefinder 129 and the emitting end surface of the radar level meter 125 in the same vertical plane, thereby improving the accuracy of the calibration data of the radar level meter.

[0032] In order to make the emitting end face of the laser rangefinder 129 and the emitting end face of the radar level meter 125 on the same vertical plane, this embodiment strictly controls the positions of the front support plate 124 and the laser bracket 132, as well as the positions between the radar level meter 125 and the front support plate 124, and between the laser rangefinder 129 and the laser bracket 132, so as to fix the radar level meter while making its emitting end face and the emitting end face of the laser rangefinder on the same vertical plane. Specifically, it can be confirmed and positioned by relevant measuring instruments.

[0033] Furthermore, the radar calibration tooling also includes an absorbing platform 130. Figure 4 The wave absorbing platform 130 includes a wave absorbing sponge 118, a fixed track 119 and a bracket 120. The wave absorbing sponge 118 is installed on the bracket 120, and the bracket 120 is installed on the fixed track 119. The entire wave absorbing platform 130 includes multiple groups of wave absorbing sponges 118 and brackets 120.

[0034] When the radar calibration tooling is working, first, check whether the fixing sleeve 122 is adapted to the current test product radar level meter 125; after confirming that the fixing sleeve 122 is correctly selected, place the test product radar level meter 125 on the fixing sleeve 122, adjust the X-axis adjustment assembly 127 and the rotating top plug 126 on the radar placement platform 140, so that the tooling clamps the test product radar level meter 125 as required, and ensure that the test product radar level meter 125 is in a clamped state; start the calibration program of the computer in the cabinet 150, and after the mobile reflection platform 110 moves and stops at the specified position as required, the test product radar level meter 125 and the laser rangefinder 129 respectively emit electromagnetic waves and lasers, and obtain the reflected electromagnetic waves and lasers, which are compared and analyzed after data processing; after repeated multiple times, the calibration system determines whether the test product radar level meter passes the calibration requirements; if it meets the requirements, it will be displayed as qualified, and if it does not meet the requirements, it will be displayed as unqualified.

[0035] In summary, the device used for radar calibration effectively fixes the radar level meter through a universal fixture composed of an X-axis adjustment component, a connecting plate, a front support plate, a rear support plate, a fixing sleeve, a rear top plate and a rotating top plug on a radar fixing platform; different types of radar level meters are adapted through a replaceable fixing sleeve to increase the versatility of the fixture; the emitting end face of the laser rangefinder and the emitting end face of the radar level meter are in the same vertical plane, thereby improving the accuracy and reliability of radar calibration detection data.

[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Even if various changes are made to the present invention, if these changes fall within the scope of the claims of the present invention and their equivalents, they still fall within the protection scope of the present invention.

Claims

1. A tool used for radar calibration, characterized in that: include: A mobile reflection platform and a radar fixed platform, wherein the mobile reflection platform is fixedly arranged in front of the radar fixed platform and is used to reflect the electromagnetic waves emitted by the radar level meter and the laser emitted by the laser rangefinder on the radar fixed platform; The radar fixed platform includes a mounting platform, a laser bracket, a laser rangefinder, an X-axis adjustment assembly, a connecting plate, a front support plate, a rear support plate, a fixing sleeve, a rear top plate and a rotating top plug; The X-axis adjustment assembly and the front support plate are fixedly mounted on the mounting platform, and the X-axis adjustment assembly is connected to the rear support plate via the connecting plate; the rear support plate is located behind the front support plate and is parallel to the front support plate; The front support plate and the rear support plate are provided with grooves, and the fixing sleeve is fixed in the groove of the rear support plate to preliminarily fix the radar level meter; The rear top plate is fixed on the mounting platform and is located behind the rear support plate; the rotating top plug is installed on the rear top plate and is used to abut against the rear end of the radar level meter; The rear support plate is driven by the X-axis adjustment assembly to be close to the front support plate, and at the same time, the rotating top plug is close to the rear end of the radar level meter to achieve clamping and fixing of the radar level meter; A laser bracket is fixedly mounted on both sides of the front support plate, and the laser rangefinder is fixedly mounted on each laser bracket; and the emitting end surface of the laser rangefinder is in the same vertical plane as the emitting end surface of the radar level meter.

2. The tooling for radar calibration as claimed in claim 1, characterized in that: The mobile reflection platform includes a reflection plate bracket, an antenna reflection plate, a guide rail, a driving motor and a sliding member. The sliding member is slidably connected to the guide rail, and the driving motor is installed on the sliding member to drive the sliding member to move on the guide rail; the antenna reflection plate is fixedly connected to the reflection plate bracket, and the reflection plate bracket is connected to the driving motor.

3. The tooling for radar calibration as claimed in claim 1, characterized in that: It also includes a wave absorbing platform, which is located on the side of the movable reflecting platform; The wave absorbing platform comprises a wave absorbing sponge, a fixed track and a bracket, wherein the bracket is installed on the fixed track, and the wave absorbing sponge is fixed on the bracket.

4. The tooling for radar calibration as claimed in claim 3, characterized in that: A plurality of wave-absorbing components are arranged on the fixed track, and the wave-absorbing components include a bracket and a wave-absorbing sponge.

5. The tooling for radar calibration as claimed in claim 1, characterized in that: The fixing sleeve is detachably connected to the groove of the rear support plate, and different types of fixing sleeves are adapted according to the model of the radar level meter.

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