CN-224203316-U - Transponder transmission module antenna testing arrangement

CN224203316UCN 224203316 UCN224203316 UCN 224203316UCN-224203316-U

Abstract

The utility model relates to the technical field of antenna test, and provides an antenna test device for a transponder transmission module, which comprises a support and signal shielding members, wherein the number of the signal shielding members is at least two, all the signal shielding members are spliced into a shielding structure for surrounding an antenna to be tested along the circumferential direction, at least one signal shielding member is in sliding connection with the support, and when the position of the signal shielding member is slid, the distance between the shielding structure and the antenna to be tested is changed. The utility model can realize the effect of testing the electric parameters of the antenna under different relative position conditions by adjusting the relative positions of the shielding structure and the antenna, and solves the problem that the transponder transmission module lacks professional equipment for dynamically testing the antenna unit in the early stage of engineering connection design and in the process of changing the design.

Inventors

ZHOU NING
LU XIAOLIANG
FAN YALIN

Assignees

北京和利时系统工程有限公司

Dates

Publication Date: 20260505
Application Date: 20250515

Claims (10)

1. The antenna testing device for the transponder transmission module is characterized by comprising a support and at least two signal shielding members, wherein all the signal shielding members are spliced into a shielding structure for surrounding an antenna to be tested along the circumferential direction, at least one signal shielding member is connected with the support in a sliding manner, and when the position of the signal shielding member is slid, the distance between the shielding structure and the antenna to be tested is changed.
2. The transponder transmission module antenna test device of claim 1 wherein the shielding structure is a box with open upper and lower end surfaces, the support member is a shielding panel, and the shielding panel is disposed at and covers the open end of the box.
3. The transponder transmission module antenna test device of claim 2 wherein the signal shielding member comprises four side plates and a slide plate, each side plate being connected at each end in the length direction to a slide plate that is adjustable in position along the length direction, wherein two side plates are directly opposite and in spaced sliding connection in a first direction of the support, and two other side plates are directly opposite and in spaced sliding connection in a second direction of the support, the side plates being perpendicular to the support, and the side plates connected in the first direction being in close proximity or contact with the side plates connected in the second direction.
4. A transponder transmission module antenna test device according to claim 3 wherein the support is provided with at least one rail in a first direction and a second direction respectively, the bottom of the side plate is provided with at least one slider which cooperates with the rail and is locked to the rail by a fastener, the side plate being movable in the first direction or the second direction when the fastener is released; The sliding plate is provided with at least one strip-shaped hole along the length direction, the two ends of the side plate are provided with mounting holes, the mounting holes correspond to the strip-shaped holes, the sliding plate is connected to one end of the side plate through the matching of the fastener and the strip-shaped holes and the mounting holes, and when the fastener is loosened, the sliding plate can move along the length direction of the side plate.
5. A transponder transmission module antenna test device according to claim 3 wherein the tops of the side plates and slide plate are each provided with a peripheral outward facing flange perpendicular to the side plates and slide plate.
6. The transponder transmission module antenna test device of any one of claims 3 to 5 wherein the shield panel, side panel and sled are all sheet metal.
7. The transponder transmission module antenna test device of claim 1 wherein the shielding structure is a ring and the support is a non-shielding panel.
8. The transponder transmission module antenna test device of claim 6 wherein the signal shielding member comprises four metal sheets, two of the metal sheets being in facing and spaced sliding engagement in a first direction of the unshielded panel and two of the other metal sheets being in facing and spaced sliding engagement in a second direction of the unshielded panel, wherein the first direction is perpendicular to the second direction, the metal sheets being parallel to the unshielded panel, and the metal sheets in the first direction and the metal sheets in the second direction overlap or contact each other.
9. The transponder transmission module antenna test device of claim 6 wherein the signal shielding member comprises two right angle metal sheets, the metal sheets being slidably connected in at least one of a first direction, a second direction and a third direction of the non-shielded panel, wherein the two right angle metal sheets are disposed opposite each other, the right angle metal sheets being parallel to the non-shielded panel, the first direction being perpendicular to the second direction, the third direction being 45 ° from the first direction and the second direction, respectively.
10. The transponder transmission module antenna test device of claim 9 wherein at least one first runner is provided in each of the first, second and third directions of the support member; At least one second chute is respectively arranged on two right-angle edges of the right-angle metal sheet, and under the condition that the metal sheet moves along the first direction, the second direction or the third direction relative to the support piece, the second chute is aligned to the first chute in at least one of the first direction, the second direction and the third direction, and the right-angle metal sheet is in locking connection or loosening connection with the support piece through the cooperation of the fastener and the first chute and the second chute.

Description

Transponder transmission module antenna testing arrangement Technical Field The utility model relates to the technical field of antenna testing, in particular to an antenna testing device for a transponder transmission module. Background The transponder transmission module (English translation is Balise Transmission Module, called BTM for short) is also called a transponder information receiving unit, and can be used as one of the main components of the vehicle-mounted equipment of the high-speed train operation control system in application, and can bear the function of receiving and controlling the information of the point-type equipment transponder. In particular, the transponder transmission module comprises an antenna unit, which is an important component of the transponder transmission module for mounting at the vehicle bottom. Because the installation environment is complex and is easily influenced by metal shells of other equipment near the installation position of the vehicle bottom, the radiation lobe pattern of the antenna unit is influenced, so that the magnetic field coupling characteristic between the antenna and the ground transponder is influenced, the space range of the antenna which can receive signals when passing through the transponder is influenced, and the maximum train speed supportable by the transponder transmission module is further influenced. In order to avoid the above problems at the beginning of engineering tie design, it is necessary to confirm whether the influence of the metal objects around the antenna installation environment on the antenna is acceptable by testing before the design of the antenna installation scheme of the vehicle is completed, so as to determine whether the antenna installation scheme is feasible. In addition, since the design of the antenna element may change, the resistance of the antenna to the influence of surrounding metal objects may change, it is necessary to evaluate the influence degree of the metal objects on the lobe pattern of the antenna after the design of the antenna is changed. However, there is currently no specialized equipment for dynamic testing of antenna elements under laboratory conditions. Disclosure of utility model The utility model aims to provide an antenna testing device for a transponder transmission module, which aims to solve the problem that the prior art lacks professional equipment for dynamically testing an antenna unit of the transponder transmission module. In order to achieve the above purpose, the utility model adopts the following technical scheme: The antenna testing device for the transponder transmission module comprises a supporting piece and at least two signal shielding members, wherein all the signal shielding members are spliced into a shielding structure for surrounding an antenna to be tested along the circumferential direction, and at least one signal shielding member is in sliding connection with the supporting piece. Optionally, the shielding structure is a box body with upper and lower end faces open, the supporting piece is a shielding panel, and the shielding panel is arranged at one open end of the box body and covers the open end of the box body. Optionally, the signal shielding component comprises side plates and sliding plates, the number of the side plates is four, two ends of each side plate in the length direction are respectively connected with one sliding plate with adjustable position along the length direction, the two side plates are opposite and are connected with the first direction of the supporting piece in a sliding way at intervals, the other two side plates are opposite to each other and are connected in a sliding manner in the second direction of the supporting piece at intervals, the side plates are perpendicular to the supporting piece, and the side plates connected in the first direction and the side plates connected in the second direction are close to or contact with each other. Optionally, the support piece is respectively provided with at least one guide rail along a first direction and a second direction, the bottom of the side plate is provided with at least one sliding block, the sliding block is matched with the guide rail and is locked on the guide rail through a fastener, the side plate can move along the first direction or the second direction under the condition that the fastener is loosened, the sliding plate is provided with at least one strip-shaped hole along the length direction, the two ends of the side plate are provided with mounting holes corresponding to the strip-shaped holes, the sliding plate is connected to one end of the side plate through the matching of the fastener with the strip-shaped holes and the mounting holes, and when the fastener is loosened, the sliding plate can move along the length direction of the side plate. Optionally, the tops of the side plates and the sliding plate are provided with folds facing the circumferential direction o