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CN-120370274-B - Radar checking device and method based on double leveling mechanisms

CN120370274BCN 120370274 BCN120370274 BCN 120370274BCN-120370274-B

Abstract

The invention discloses a radar checking device and a checking method based on a double leveling mechanism, the radar checking device comprises a water tank, a placing plate, a first electric telescopic rod, a distance measuring mechanism and a first leveling mechanism. The radar device comprises a radar body, a placement plate, a first electric telescopic rod, a distance measuring mechanism and a first leveling mechanism, wherein the placement plate is used for placing the radar body, the first electric telescopic rod is used for driving the placement plate to move along the height direction of a water tank, the distance measuring mechanism is used for measuring the distance between the emitting surface of the radar body and the bottom of the water tank, and the first leveling mechanism is used for leveling the water tank so that the water surface in the water tank keeps a horizontal state relative to the bottom of the water tank. The invention performs leveling operation on the water tank through the first leveling mechanism, so that the water surface in the water tank is in a horizontal state relative to the bottom surface of the water tank, thereby eliminating measurement errors caused by the non-horizontal state of the water surface of the water tank relative to the bottom surface of the water tank, and improving the accuracy of radar checking.

Inventors

  • ZHOU YANG
  • WANG XINWU
  • JIA ZHEN
  • ZHANG YOUBIN
  • HU FANGXIAO
  • YIN QIN

Assignees

  • 江西省天驰高速科技发展有限公司

Dates

Publication Date
20260508
Application Date
20250627

Claims (6)

  1. 1. A radar verification device based on a double leveling mechanism, comprising: A water tank (1); the placement plate (2), the placement plate (2) is used for placing the radar body; The first electric telescopic rod (6) is used for driving the placement plate (2) to move along the height direction of the water tank (1); A distance measuring mechanism (9), wherein the distance measuring mechanism (9) is used for measuring the distance between the emitting surface of the radar body and the bottom of the water tank (1); The first leveling mechanism (7) is used for performing leveling operation on the water tank (1) so as to enable the water surface in the water tank (1) to be in a horizontal state relative to the bottom surface of the water tank (1); The second leveling mechanism (8), the second leveling mechanism (8) is used for leveling the placing plate (2), the second leveling mechanism (8) comprises a second electric telescopic rod (802) and a third electric telescopic rod (804) which are respectively arranged at two sides of the length direction of the placing plate (2), the telescopic ends of the second electric telescopic rod (802) and the third electric telescopic rod (804) are respectively and rotatably connected with ball hinge seats (803) at two sides of the placing plate (2), one ends of the second electric telescopic rod (802) and the third electric telescopic rod (804) far away from the ball hinge seats (803) are respectively and rotatably connected with a first rotating seat (801) and a second rotating seat (805) through pin shafts, and the corresponding pin shafts are respectively parallel to the width direction and the length direction of the placing plate (2), and the second electric telescopic rod (802) and the third electric telescopic rod (804) are mutually staggered along the width direction of the placing plate (2); Scale marks (11) extending along the height direction of the placing plate (2) are arranged on at least two adjacent side surfaces of the placing plate (2), the scale marks (11) are respectively arranged at two ends of the side surface of the placing plate (2), and an observation window (3) corresponding to the scale marks (11) is arranged on the water tank (1); when the radar checking device based on the double leveling mechanism performs checking, the method comprises the following steps: step S101, leveling the water tank (1) through a first leveling mechanism (7) so that the water surface in the water tank (1) is kept in a horizontal state relative to the bottom surface of the water tank (1); Step S102, leveling the placing plate (2) through a second leveling mechanism (8) so that the placing plate (2) is kept in a horizontal state relative to the water surface in the water tank (1); Step S103, driving the placing plate (2) to move to a specified height through the first electric telescopic rod (6), and measuring the distance between the emitting surface of the radar to be detected and the bottom of the water tank (1) through the distance measuring mechanism (9); step S104, water is filled into the water tank (1) until the water level reaches the emitting surface of the radar; step S105, placing the radar to be detected on the placing plate (2); step S106, starting radar detection, measuring and obtaining the propagation speed of the electromagnetic wave emitted by the radar in water, comparing the measured propagation speed of the electromagnetic wave in water with the theoretical propagation speed of the electromagnetic wave in water, and checking whether the radar is qualified or not; The step S102 of leveling the placement plate (2) by the second leveling mechanism (8) so that the placement plate (2) maintains a horizontal state relative to the water surface in the water tank (1) specifically includes: Filling water into the water tank (1) until the water level reaches the graduation line (11); Observing whether the scales corresponding to the water surface are the same as the scales (11) at the two ends of the side surface corresponding to the length direction of the placing plate (2) through the observation window (3); if not, driving the second electric telescopic rod (802) to stretch until the scale marks (11) at the two ends of the side surface corresponding to the length direction of the placing plate (2) are the same as the scales corresponding to the water surface; Observing whether the scales corresponding to the water surface are the same as the scales (11) at the two ends of the side surface corresponding to the width direction of the placing plate (2) through the observation window (3); if not, the third electric telescopic rod (804) is driven to stretch until the scale marks (11) at the two ends of the side surface corresponding to the width direction of the placing plate (2) are the same as the scales corresponding to the water surface.
  2. 2. The radar checking device based on the double leveling mechanism according to claim 1, wherein the placement plate (2) is provided with a hollowed-out portion (201), and the hollowed-out portion (201) corresponds to the emitting surface of the radar body.
  3. 3. The radar checking device based on the double leveling mechanisms, as set forth in claim 1, characterized in that the first leveling mechanism (7) comprises a fixed block (701), the fixed block (701) is installed at the bottom of the side face of the water tank (1), the fixed block (701) is connected with adjusting screws (703) through threads with threaded holes, the number of the adjusting screws (703) is three, and the distance between one adjusting screw (703) and the other two adjusting screws (703) is equal.
  4. 4. The radar checking device based on the double leveling mechanism according to claim 3, wherein the first leveling mechanism (7) further comprises a first leveling bubble (705) and a second leveling bubble (706), the axes of the first leveling bubble (705) and the second leveling bubble (706) are perpendicular to each other, and the axes of the second leveling bubble (706) are parallel to the connecting lines of two adjusting screws (703) corresponding to the lateral surface of the water tank (1) in the length direction.
  5. 5. The radar checking device based on the double leveling mechanism according to claim 3, wherein the top end of the adjusting screw (703) is fixedly connected with an adjusting knob (702), and the bottom end of the adjusting screw (703) is fixedly connected with a supporting leg (704).
  6. 6. The radar checking device based on the double leveling mechanism of claim 1, wherein the distance measuring mechanism (9) comprises a distance measuring sensor (901), the distance measuring sensor (901) is mounted on a lifting block (902) through a first locking nut (903), two ends of the lifting block (902) are in sliding fit with a guide rod (905), fastening bolts (904) are connected to the lifting block (902) in a threaded mode, the fastening bolts (904) penetrate through the lifting block (902) and then abut against the guide rod (905), the bottom end of the guide rod (905) is mounted on a placing plate (2) through a second locking nut (906), and through holes corresponding to the distance measuring sensor (901) are formed in the bottom end of the placing plate (2).

Description

Radar checking device and method based on double leveling mechanisms Technical Field The invention relates to the technical field of radar detection, in particular to a radar checking device and a radar checking method based on a double leveling mechanism. Background The method comprises the following steps of (1) filling purified water with a certain height into a pool, placing a steel plate at the bottom of the pool, or setting the bottom of the pool as the steel plate, starting radar detection after the radar is moved to a specified height, comparing the wave speed of the electromagnetic wave in water detected by the radar with the wave speed of the electromagnetic wave in theoretical water, and checking whether the radar is qualified or not. (2) The auxiliary device for measuring the wave speed of the electromagnetic wave in the air mainly comprises a clamp, a radar antenna fixing frame, a base and a metal coating reflecting plate, wherein the area of the metal coating reflecting plate is not smaller than 4 times of the area of the bottom surface of the engineering radar antenna. And moving the radar to a specified distance from the metal coating reflecting plate, punching the metal coating reflecting plate on a radar emitting surface to start radar detection, comparing the electromagnetic wave speed in the air detected by the radar with the electromagnetic wave speed in theoretical air, and checking whether the radar is qualified or not. However, the electromagnetic wave emitted by the radar has a high propagation speed in the air, which leads to the need of keeping a long distance between the radar and the metal-coated reflecting plate, and further leads to a larger size of the whole device and more occupied space. In contrast, when electromagnetic waves emitted by radar propagate in water, the size requirement for the water tank is not high due to the slower wave speed. However, in actual use, the water surface in the water tank is often not in a horizontal state relative to the bottom surface of the water tank due to the influence of uneven ground. And the electromagnetic wave emitted by the radar is in a conical beam shape, and when the water surface is uneven, the propagation distances of different positions of the radar beam in the water can be deviated. Such deviations may lead to inaccurate wave velocities of the electromagnetic waves in the water detected by the radar, thereby affecting the result of checking whether the radar is acceptable. Disclosure of Invention The invention aims to improve and innovate defects and problems existing in the background technology, and provides a radar checking device and a radar checking method based on a double leveling mechanism. According to a first aspect of the present invention, there is provided a radar check device based on a double leveling mechanism, comprising: A water tank; the placing plate is used for placing the radar body; the first electric telescopic rod is used for driving the placement plate to move along the height direction of the water tank; the distance measuring mechanism is used for measuring the distance between the emitting surface of the radar body and the bottom of the water tank; the first leveling mechanism is used for leveling the water tank so that the water surface in the water tank is kept in a horizontal state relative to the bottom surface of the water tank. The further scheme is that the placement plate is provided with a hollowed-out part, and the hollowed-out part corresponds to the emitting surface of the radar body. The further scheme is, first levelling mechanism includes the fixed block, and the fixed block is installed in the bottom of water tank side, there is adjusting screw through seting up screw hole threaded connection on the fixed block, adjusting screw's quantity is provided with three, and one adjusting screw equals with the interval of two other adjusting screw. Further, the first leveling mechanism further comprises a first leveling bubble and a second leveling bubble, the axes of the first leveling bubble and the second leveling bubble are perpendicular to each other, and the axes of the second leveling bubble are parallel to the connecting lines of the two adjusting screws corresponding to the side faces of the length direction of the water tank. Further scheme is, adjusting screw's top fixedly connected with adjust knob, adjusting screw's bottom fixedly connected with stabilizer blade. The second leveling mechanism is used for leveling the placing plate, the second leveling mechanism comprises a second electric telescopic rod and a third electric telescopic rod which are respectively arranged on two sides of the length direction of the placing plate, the telescopic ends of the second electric telescopic rod and the third electric telescopic rod are respectively in rotary connection with ball hinge seats on two sides of the placing plate, one ends of the second electric telescopic rod and the third e