DE102021202606B3 - Radio test device for a vehicle, and method for carrying out radio tests and/or antenna tests on a vehicle - Google Patents

Abstract

The invention relates to a radio test device (1) for a vehicle (2), with a test chamber (3) into which the vehicle (2) can be introduced, the test chamber (3) having an interior (4), Antenna unit (15) which is arranged in or on the interior (4), having: - a carrier device (23) in the interior (4) of the test chamber (3), which is intended for positioning the vehicle (2) thereon, a movable floor (17) of the test chamber (3), which is separate from the base plate (23), - an adjusting device (18) with which the movable floor (17) is positioned in a first test state in a first position (P1), the movable is arranged adjacent to the floor (17) and encompasses the carrier device (23) at least in regions, and- the movable floor (17) is positioned with the adjustment device (18) in a second test state in a second position (P2), with a volume space (22 ) freely below the carrier device (23). is given.Furthermore, the invention relates to a method.

Description

The invention relates to a radio test device for a vehicle. The radio test device has a test chamber in which the vehicle can be introduced for radio tests and/or antenna tests. The test chamber has an interior space defined by walls of the test chamber. Furthermore, the radio test device has at least one antenna unit, which is arranged in or on the interior, for carrying out the radio tests and/or antenna tests on the vehicle.

Furthermore, the invention relates to a method for carrying out radio tests and/or antenna tests on a vehicle with a corresponding radio test device, the vehicle being brought into the test chamber for the radio tests and/or antenna tests, and the radio tests and/or antenna tests are carried out on the vehicle with the at least one antenna unit.

In the automotive industry, electromagnetic compatibility (EMC), radio certification and antenna testing are of great importance for vehicles. This is an essential prerequisite for the networking of autonomously operated vehicles, flexible use of vehicles and for electric drives. Measuring halls or test stations can be used for this. Test buildings for electromagnetic compatibility (EMC) and high-frequency (HV) antenna systems and/or radio tests are used in particular.

By checking the vehicles, interference with other receiving systems in the vicinity of the vehicle can be prevented. In particular, the radio test helps to find out to what extent passengers are exposed to electromagnetic radiation in the vehicle interior. Furthermore, it can be tested whether vehicle functions of vehicle systems of the vehicle are impaired by external electromagnetic fields. The antenna tests can be used to test the reception quality and performance of the vehicle's antennas.

For example, the EP 3 182 619 A1 a device for determining performance parameters of at least one radio system arranged in or on a vehicle, comprising a rotatable platform for receiving and rotating the vehicle, a simulation antenna, a base station emulator connected to the simulation antenna, at least one test antenna, and at least one with the at least one test antenna and /or test device connected to the simulation antenna for determining at least one performance parameter of the at least one radio system as a function of a rotation angle of the vehicle.

Furthermore, the DE 10 2019 211 608 A1 an apparatus for measuring wireless over-the-air (OTA) communication performance in an automotive application of a device under test (DUT) located on or in a vehicle. The device includes a chamber defining an interior volume therein, such as an EMI chamber or a semi-anechoic chamber. Also provided in the interior volume is a rotatable platform for supporting the vehicle, along with at least one chamber antenna.

The object of the present invention is to be able to increase a degree of automation or an automation level of a test device for carrying out radio tests and/or antenna tests on a vehicle.

This object is achieved by a radio test device and a method for performing radio tests and/or antenna tests on a vehicle according to the independent patent claims. Useful developments result from the dependent claims.

• - einer Testkammer, in welcher das Fahrzeug für Funk-Prüfungen und/oder Antennen-Prüfungen einbringbar ist, wobei die Testkammer einen Innenraum aufweist, welcher durch Wände der Testkammer begrenzt ist,
• - zumindest einer Antenneneinheit, welche im oder am Innenraum angeordnet ist, zum Durchführen der Funk-Prüfungen und/oder Antennen-Prüfungen am Fahrzeug, aufweisend:
• - eine Trägervorrichtung im Innenraum der Testkammer, welche bestimmungsgemäß zum Daraufpositionieren des Fahrzeugs vorgesehen ist,
• - einen bewegbare Boden als Wand der Testkammer, der separat zur Trägervorrichtung ist,
• - eine Verstellvorrichtung der Funk-Testvorrichtung, mit welcher der bewegbare Boden in einem ersten Testzustand der Funk-Testvorrichtung in einer erste Position positioniert ist, wobei in der ersten Position des bewegbaren Bodens der bewegbare Boden benachbart und die Trägervorrichtung zumindest bereichsweise umgreifend angeordnet ist, und
• - mit der Verstellvorrichtung der Funk-Testvorrichtung der bewegbare Boden in einem zum ersten Testzustand unterschiedlichen zweiten Testzustand der Funk-Testvorrichtung in einer zur ersten Position verschiedenen zweiten Position positioniert ist, wobei in der zweiten Position des bewegbaren Bodens ein Volumenraum unterhalb der Trägervorrichtung freigegeben ist, sodass die Trägervorrichtung in dem Innenraum der Testkammer zur Seite hin und nach unten frei liegt.

One aspect of the invention relates to a radio test device for a vehicle, with

• - a test chamber in which the vehicle can be introduced for radio tests and/or antenna tests, the test chamber having an interior space which is delimited by the walls of the test chamber,
• - at least one antenna unit, which is arranged in or on the interior, for carrying out the radio tests and/or antenna tests on the vehicle, having:
• - a carrier device in the interior of the test chamber, which is intended for positioning the vehicle on it,
• - a movable floor as a wall of the test chamber, which is separate from the carrier device,
• - an adjusting device of the radio test device, with which the movable base is positioned in a first test state of the radio test device in a first position, wherein in the first position of the movable base the movable base is arranged adjacent and the carrier device is arranged at least in regions encompassing, and
• - with the adjustment device of the radio test device, the movable floor is positioned in a second test state of the radio test device, which differs from the first test state, in a second position that differs from the first position, with a volume space below the carrier device being released in the second position of the movable floor, so that the support device is exposed sideways and downwards in the interior of the test chamber.

With the proposed radio test device, a radio test and/or antenna test on vehicles can be carried out more efficiently and, in particular, more quickly, since the degree of automation or the level of automation of the test device is increased, in particular improved. In other words, vehicles can be tested using an automated, in particular fully automated, radio test and/or antenna test. As a result, the radio tester can test more vehicles at the same time than the prior art testers. In particular, a radio check and/or antenna check on the vehicle can be carried out automatically, in particular automatically, using the radio test device. As a result, there is an improved and, in particular, more efficient testing of the vehicle with regard to its electromagnetic compatibility, its radio systems and its antenna systems.

In particular, by means of the radio test device, a radio certification approach for the vehicle, which is similar to that in the mobile phone industry, can be carried out. This means that radio tests for certifying radio channels in vehicles can be carried out efficiently.

In particular, near-field-far-field antenna measurements of the vehicle can be carried out using the radio test device. In particular, the radio test device is a measuring device or a test station. For example, the radio test device can be referred to as a radio measurement chamber.

Furthermore, the radio test device can also be used to carry out EMC tests and/or high-frequency tests on the vehicle.

The vehicle can be, for example, a motor vehicle or a truck or a passenger car.

The radio tests and/or antenna tests can be carried out with the at least one antenna unit or with a plurality of antenna units. The antenna unit can be, for example, an electrical device or a transmitting and/or receiving unit. For testing the vehicle, the vehicle can be introduced or driven into the test chamber automatically or independently. In particular, the test chamber is a closed space which is delimited by walls. The test chamber can have a floor, a ceiling and side walls as walls. In particular, the test chamber has a cuboid configuration. The test chamber is, for example, a three-dimensional space. Inside the test chamber, ie the inner area of the test chamber, the interior is formed, within which the radio tests and/or antenna tests of the vehicle are carried out. The interior may contain the antenna unit and other units or systems for performing the tests.

To carry out the radio tests and/or antenna tests, the vehicle can be positioned, in particular driven, automatically or independently on the carrier device in the interior of the test chamber. The carrier device is a specific part of the test chamber on which the vehicle is positioned exclusively for the tests. In addition to the carrier device, the interior of the test chamber contains the moveable or moveable floor. The support device and the movable floor are separate components of the test chamber. For example, the movable floor can be referred to as a floor segment or floor panel. The carrier device is, for example, a special measuring area or a test station. In particular, the carrier device can be a test area. For example, the carrier device can be designed as a mounting plate, jack mount, turntable. In particular, the carrier device can have an H structure.

In particular, in the second test state of the radio test device, the volume space is free when viewed from above and exposed upwards compared to the first test state. In the first test state, the volume space is optionally completely covered when viewed from above.

In the first test state, the carrier device can be encompassed or wrapped around or surrounded by the movable floor in some areas, in particular completely.

With the help of the adjustment device of the radio test device, the movable floor can be automatically adjusted depending on the test status of the radio Test device is present, are moved. In particular, the adjusting device can be a mechanical or electromechanical unit. With the adjustment device, the movable floor can be moved automatically as a function of control signals. The movable floor can be positioned in the first or second position using the adjustment device. In particular, the movable floor can be moved in stages with the aid of the adjusting device, so that the most varied of positions can be assumed by the movable floor. This is advantageous, for example, for the most varied types of tests and/or vehicles.

For example, the first and/or second test state of the radio test device is a special or specific measurement arrangement for carrying out the radio tests and/or antenna tests. For example, one of the test states can be used to provide a measurement arrangement in which the vehicle can be measured via a measurement ground or measurement floor (“Perfect Electric Ground” (PEC)). In another test state, a measurement arrangement can be set in which the vehicle can be measured using absorbers. This can be carried out by lifting an object to be measured, in particular the vehicle. With the help of the adjusting device, for example, the vehicle can be raised or the floor area around the base plate can be moved away. In particular, the measuring bases and/or the absorbers can be moved away or cleared away with the aid of the adjusting device. Thus, with the aid of the adjustment device, the radio test device can be set to a corresponding measurement arrangement depending on the desired or required measurement method. In other words, the test chamber can be dynamically adjusted with the aid of the adjustment device, depending on the test situation or measurement requirement.

With the aid of the adjustment device, an automatic transition between the first test state and the second test state of the radio test device can be carried out.

In particular, in the first position, the movable floor completely encloses the carrier device. Likewise, in the first position, the carrier device and the movable floor can be arranged so that they overlap one another. In the second position of the movable floor, the volume space below the carrier device is released or exposed.

The volume space is in particular a separate space which is arranged below the base plate of the test chamber. In other words, the volume space is a cellar-like space below the carrier device. When the movable floor is positioned in the second position, the support device is free and open sideways and downwards in the volume space. Consequently, in the second test condition, the vehicle merely rests on the support device and is not restricted by items or objects all around.

For example, the radio test device can be used to carry out tests in a frequency range from 9 kilohertz to a terahertz range.

In one exemplary embodiment of the invention, it is provided that the carrier device has a rotary device, in particular an electromechanical one, with the carrier device being able to be rotated through 360 degrees by means of the rotary device. In other words, the carrier device can be referred to as a rotary device or turntable. In particular, the vehicle positioned on it can be rotated with the aid of the carrier device depending on the respective radio test and/or antenna test in the interior of the test chamber. In this case, the carrier device can be rotated or turned automatically by means of the electromechanical rotary device. The carrier device can be rotated 360 degrees around its own axis. In other words, the carrier device can be rotated completely around its own axis.

For example, the carrier device can have a standing plate or a standing platform. The base plate can also be referred to as a positioning platform. The vehicle can be positioned on the base plate of the carrier device for the tests.

In a further exemplary embodiment of the invention, it is provided that the carrier device has at least two carrier arms for receiving the vehicle and/or a base plate on which the vehicle can be positioned, in particular the base plate is circular, in particular elliptical. Consequently, the vehicle can be picked up and thus positioned for the radio tests and/or antenna tests by means of the support arms or the base plate.

The support arms can be support elements or rod-like elements. The vehicle can be selectively picked up and held by means of the support arms. For example, the support arms can hold or carry the vehicle on a vehicle underbody of the vehicle or on vehicle tires of the vehicle. In other words, the vehicle can for example, four support points rest on the carrier device.

For example, the carrier device can have two, in particular three, in particular four carrier arms. The support arms can be pivotable and/or movable. Support plates or support plates can be arranged at the ends of the support arms for receiving the vehicle, as a result of which the vehicle can be held efficiently.

In particular, the base plate has no corners, so that the base plate can be easily rotated. Due to the circular configuration of the base plate, the base plate can be enclosed in a ring shape by the movable base. In other words, the standing plate can be a circular cutout in the movable floor and in particular the floor plate of the test chamber.

If no radio tests and/or antenna tests are carried out, then the base plate of the carrier device and the movable floor form a continuous area or a partial area of the floor plate of the test chamber. The base plate and the movable floor lie flat against one another. In other words, the floor or the floor plate of the test chamber consists at least of the base plate and the movable floor.

Optionally, the length and/or width of the carrier device can be at most 20%, in particular 10%, greater than a vehicle length and/or vehicle width of the vehicle. The carrier device, in particular the base plate of the carrier device, can be dimensioned in such a way that the vehicle can just about be picked up. Thus, the dimensions or dimensions of the carrier device can be adapted to the vehicle.

For example, the carrier device can be rectangular or oval.

In a further exemplary embodiment of the invention, it is provided that absorbers, in particular EMC absorbers, in particular microwave absorbers, are arranged on the walls facing the interior, in particular side walls and/or ceiling walls, in some areas or covering the entire area, with the absorbers being in the first test state and/or or electromagnetic waves can be absorbed in the second test state of the radio test device. With the help of the absorbers, interfering radiation originating from the vehicle or from vehicle systems of the vehicle can be absorbed and evaluated. In other words, the absorbers can be used to check what interference is emanating from the vehicle itself due to unwanted high-frequency radiation. In particular, an antenna measurement of diagrams and impedances of the vehicle can be carried out using the absorbers. In particular, the absorbers can be arranged on the ceiling walls and on the side walls of the interior of the test chamber in areas or across the board. In particular, the surfaces on the side walls and on the ceiling walls can be completely covered with absorbers. This results in the best possible absorption or absorption of the radiation emitted by the vehicle.

For example, the absorbers can be microwave absorbers, EMC absorbers, narrowband absorbers, broadband absorbers, flat absorbers, flat foam absorbers or foam absorbers. In particular, the absorbers can be adapted to the requirements of radio testing and/or antenna testing.

In a further exemplary embodiment of the invention, it is provided that the test chamber is delimited in an outer area facing away from the interior, with shielding elements being arranged on the outer sides in certain areas, in particular covering the entire area, with the shielding elements shielding the interior of the test chamber from electromagnetic interference. In particular, the test chamber has inner sides in the interior. The inner sides are in particular the side walls, the ceiling walls and the floor of the test chamber. On the outside, the test chamber has outer sides with which the test chamber is delimited or encased on the outside in relation to the interior. Shielding elements are arranged on these outer sides in areas or across the board. The complete electromagnetic shielding of the test chamber against external interference is particularly advantageous for carrying out radio tests and/or antenna tests. In this way, the radio tests and/or antenna tests can be carried out without disturbing disturbance variables, so that the measurement results or measurement results can be determined more precisely. In other words, the test chamber is designed as an electronically shielded room or cabin with the aid of the shielding elements.

In a further exemplary embodiment of the invention, it is provided that at least one measuring unit is arranged in the volume space below the carrier device, with the at least one measuring unit for carrying out radio tests being in the second test state of the radio test device gen and/or antenna tests can be activated. A wide variety of tests can be carried out on the vehicle using the at least one measuring unit when the radio test device is switched to the second test state. For example, the at least one measuring unit can be an absorber and/or a receiving or transmitting unit. In particular, the at least one measuring unit can be part of the at least one antenna unit or can be digitally networked with the at least one antenna unit. In particular, a far-field measurement can be carried out on the vehicle with the at least one measuring unit. In particular, several measuring units can be arranged in the volume space. In particular, the at least one measuring unit can be activated with a central control unit of the radio test device depending on the respective test status of the radio test device.

In a further exemplary embodiment of the invention, it can be provided that the movable floor is part of a measuring arrangement, with the movable floor and the at least one antenna unit being the measuring unit for carrying out radio tests and/or antenna tests in the first test state of the radio test device form on the vehicle. As a result, the radio test device can be operated particularly efficiently, since the movable base is part of the measurement arrangement and additional components or measurement equipment can therefore be dispensed with. In other words, the movable floor can represent a measurement floor as part of a measurement arrangement for carrying out radio tests and/or antenna tests. Thus, the moveable floor serves not only to mechanically cover the volume space, but also as a component of the measurement arrangement. Thus, the movable floor can be versatile and multifunctional used in the radio test device.

Furthermore, the movable floor can also be used as a drive-on ramp or transport platform for positioning the vehicle or another measurement object. Thus, the movable floor fulfills several functions for the radio test device.

In one exemplary embodiment, it is provided that in the second position of the movable floor, the movable floor is positioned parallel to and superimposed on a stationary floor area of the interior that is separate from the movable floor and the base plate. In other words, in the second position of the movable floor, the area around the standing plate is pushed or moved away. In particular, the movable floor is positioned on a floor area of the floor plate of the test chamber that is adjacent to the movable floor. The movable floor can be pushed either below this floor area or above this floor area. Thus, the movable floor is either positioned above the floor area or is pushed below the floor area into a receiving device provided for this purpose. Thus, during tests in the second test condition, the moveable floor is partially or completely removed from a test area. In particular, the movable floor can be moved back and forth along rails with the aid of an electromechanical rail system of the adjusting device.

A further exemplary embodiment of the invention provides for a lifting device to be arranged in the volume space below the carrier device, with the lifting device being used to adjust the standing plate in the vertical position during a transition between the test states perpendicular to the movable floor. In other words, the carrier device and thus the vehicle can be raised or lowered using the lifting device. This takes place in particular perpendicularly or vertically to the base plate or the base area of the test chamber. In particular, the vehicle can be moved vertically upwards with respect to a longitudinal side of the vehicle.

In particular, raising the carrier device and/or the standing plate is advantageous when positioning the movable floor between the first position and the second position and vice versa. For example, the carrier device can first be raised and the movable floor can then be moved away, so that the volume space below the carrier device is exposed.

For example, the carrier device and thus the vehicle can be raised using the lifting device, so that the vehicle can be arranged as a measurement object at a specified or predefined height above the at least one measurement unit or an absorber.

In particular, the lifting device and the carrier device can be understood as a unit. Optionally, the lifting device can be part of the carrier device.

For example, the moveable floor can be moved horizontally under the vehicle.

• - das Fahrzeug für die Funk-Prüfungen und/oder Antennen-Prüfungen in die Testkammer eingebracht wird, und
• - die Funk-Prüfungen und/oder Antennen-Prüfungen am Fahrzeug mit der zumindest einen Antenneneinheit durchgeführt werden, gekennzeichnet, durch
• - Daraufpositionieren des Fahrzeugs auf die Trägervorrichtung im Innenraum der Testkammer,
• - Bereitstellen von zumindest zwei möglichen Positionierungen des bewegbaren Bodens zum wahlweise Durchführen eines ersten Testzustands oder eine zweiten Testzustands,
• - Einstellen eines Testzustands indem durchgeführt wird:
  • - Positionieren des bewegbaren Bodens in dem ersten Testzustand der Funk-Testvorrichtung in der ersten Position, oder
  • - Positionieren des bewegbaren Boden in der zur ersten Position verschiedenen zweiten Position in einem zum ersten Testzustand unterschiedlichen zweiten Testzustand der Funk-Testvorrichtung, wobei in der zweiten Position des bewegbaren Bodens der Volumenraum unterhalb der Trägervorrichtung freigegeben wird, sodass die Trägervorrichtung in dem Innenraum der Testkammer zur Seite hin und nach unten frei liegt.

Another aspect of the invention relates to a method for performing radio tests and/or antenna tests on a vehicle with a radio test device according to the preceding aspect, wherein

• - the vehicle is brought into the test chamber for the radio tests and/or antenna tests, and
• - The radio tests and/or antenna tests are carried out on the vehicle with the at least one antenna unit, characterized by
• - then positioning the vehicle on the carrier device inside the test chamber,
• - providing at least two possible positions of the movable floor for selectively carrying out a first test state or a second test state,
• - Setting a test condition by performing:
  • - positioning the movable floor in the first test state of the radio test device in the first position, or
  • - Positioning the movable floor in the second position, which is different from the first position, in a second test state of the radio test device, which is different from the first test state, wherein the volume space below the carrier device is released in the second position of the movable floor, so that the carrier device is in the interior of the test chamber is exposed to the side and below.

An automated radio test and/or antenna test can be carried out on a vehicle with the aid of the proposed method. In particular, the tests are carried out automatically and automatically using the radio test device.

In particular, the method just described can be carried out with a radio test device according to the previous aspect.

The invention also includes developments of the method according to the invention which have features as have already been described in connection with the developments of the radio test device according to the invention. For this reason, the corresponding developments of the method according to the invention are not described again here.

The invention also includes the combinations of features of the described embodiments.

• 1 eine schematische Darstellung der erfindungsgemäßen Funk-Testvorrichtung;
• 2 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;
• 3 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;
• 4 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;
• 5 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1, wobei hier der ersten Testzustand der Funk-Testvorrichtung eingenommen ist;
• 6 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;
• 7 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;
• 8 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1, wobei hier der zweite Testzustand der Funk-Testvorrichtung eingenommen ist;
• 9 eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1; und
• 10eine weitere schematische Darstellung der Funk-Testvorrichtung aus 1;

Exemplary embodiments of the invention are described below. For this shows:

• 1 a schematic representation of the radio test device according to the invention;
• 2 a further schematic representation of the radio test device 1 ;
• 3 a further schematic representation of the radio test device 1 ;
• 4 a further schematic representation of the radio test device 1 ;
• 5 a further schematic representation of the radio test device 1 , the radio test device being in the first test state here;
• 6 a further schematic representation of the radio test device 1 ;
• 7 a further schematic representation of the radio test device 1 ;
• 8th a further schematic representation of the radio test device 1 , the radio test device being in the second test state here;
• 9 a further schematic representation of the radio test device 1 ; and
• 10a further schematic representation of the radio test device 1 ;

The exemplary embodiments explained below are preferred exemplary embodiments of the invention. In the exemplary embodiments, the components described each represent individual features of the invention to be considered independently of one another, which also develop the invention independently of one another and are therefore also to be regarded as part of the invention individually or in a combination other than that shown. Furthermore, the exemplary embodiments described can also be supplemented by further features of the invention already described.

Elements with the same function are each provided with the same reference symbols in the figures.

the 1 shows, for example, a schematic side view of a radio test device 1 according to the invention. Using the radio test device 1, radio tests and/or antenna tests and/or antenna tests and/or EMC tests and/or high-frequency tests and/or or other electromagnetic tests are carried out. In particular, with the radio test device 1 cars, trucks, Motorcycles or other vehicle types are tested. Likewise, the radio test device 1 can be used to test vehicle-external units.

In particular, the radio test device 1 can be used to implement a number of different measurement arrangements in one and the same measurement chamber.

For example, the radio test device 1 can be referred to as a test building for EMC and antenna systems. In particular, the radio test device 1 is a radio measurement chamber or measurement building. In particular, the radio test device 1 is a three-dimensional space or a three-dimensional hall.

The radio test device 1 specifically has a test chamber 3 within which the actual radio tests and/or antenna tests are carried out. The test chamber 3 has a special interior space 4 for this purpose, for example. The interior 4 can be referred to as a measuring room or test room, for example. The interior space 4 can in particular be delimited by a plurality of walls 5 . In particular, the interior 4 of the test chamber 3 is enclosed by the walls 5 . In particular, the interior 4 of the test chamber 3 has a top wall 6 , several side walls 7 and a test chamber floor 8 . In particular, the test chamber floor 8 is a hall floor or a floor area of the test chamber 3.

In particular, the test chamber 3 can have an outer area 9 facing away from the inner space 4 . In particular, the outdoor area 9 is an area in the environment outside of the test chamber 3. For example, there is a preparation room 10 in the outdoor area 9.

With the preparation room 10 the vehicle 2 in particular can be prepared for the subsequent measurement within the test chamber 3 . Thus, for example, while the vehicle 2 is being prepared in the preparation room 10 , another measurement can be carried out on another vehicle in the test chamber 3 . A faster sequence of multiple measurements can thus be carried out on multiple following vehicles. For example, the vehicle 2 can be positioned on a pushing device 11 in the preparation room 10 . The pushing device 11 is used on the one hand to prepare the vehicle 1 for the subsequent tests and on the other hand the pushing device 11 can be an automated device for introducing the vehicle 2 into the test chamber 3 . In particular, the vehicle 2 can be pushed or brought into the test chamber 3 with the aid of the pushing device 11 , which is designed as a platform or plate. In particular, the preparation room 10 and the test chamber 3 are connected to one another via a gate 12 . The vehicle 2 can be brought into the test chamber 3 or brought out again or transported through the gate 12 .

In particular, the test chamber 3 can be delimited or enclosed by outer sides 13 in the outer area 9 facing away from the inner space 4 . The outer sides 13 are therefore the outer building structure or building facade of the test chamber 3.

Since the radio tests and/or antenna tests are sensitive to interfering radiation or waves and the measurement results can be falsified as a result, the test chamber 3 can advantageously be shielded from external interference variables. The shielding of interference variables in the outer area 9 is done by shielding elements 14. The shielding elements 14 serve in particular to electromagnetically shield the interior 4 of the test chamber 3 from harmful radiation and/or waves. The shielding elements 14 can, for example, be arranged on the outer sides 13 in certain areas or covering the entire area. It is particularly advantageous if the entire or complete surface of the outer sides 13 is covered by shielding elements 14 . Consequently, the interior 4 can be completely shielded from negative influences from the exterior 9 .

In order to be able to carry out the radio tests and/or antenna tests, the interior 4 of the test chamber 3 has at least one antenna unit 15 . The antenna unit 15 can be a scan arm or a measuring tower, for example. In particular, the antenna unit 15 can be referred to as a measuring device for carrying out the radio test and/or antenna test. For example, the antenna unit 15 is a transmitting and/or receiving unit for electromagnetic radiation. In particular, the test chamber 3 can have a plurality of antenna units 15 . These can be positioned differently in the interior 4 depending on the measuring method. For example, the antenna units 15 can be designed as pivotable units.

For example, absorbers 16 can be arranged on the walls 5, in particular on the side walls 7 and/or top walls 6, in some areas or across the board. In particular, these absorbers 16 are used depending on the type of radio Testing and/or antenna testing to be able to absorb electromagnetic waves or radiation. For this purpose, the absorbers 16 can be, for example, microwave absorbers or EMC absorbers or coherent absorbers. The absorbers 16 can be arranged on the walls 5 either at certain points or in certain areas. Otherwise, the absorbers 16 can completely cover the entire surface of the side walls 7 and top walls 6. In other words, apart from the test chamber floor 8, the interior 4 can have the absorbers 16 completely as a wall surface. Thus, the electromagnetic rays or waves can be efficiently absorbed.

For example, the radio test device 1 can have or assume at least a first test state and a second test state. In particular, the radio test device 1 can assume a number of different test states. As a result, a wide variety of radio tests and/or antenna tests can be carried out on the vehicle 2 .

For example, the radio test device 1 can assume a first test state, in which the tests are carried out on the vehicle 2 using the antenna unit 15 and a measuring floor or measuring surface. The measurement surface can be a PEC (“Perfect Electric Ground”), for example. The measurement surface has special electrical properties that are advantageous for radio tests and/or antenna tests. For example, the measurement surface can be a highly reflective floor with little scattering properties or scattering. In particular, the measurement surface is a surface-smoothed surface. In particular, the measurement surface can be made of asphalt or steel or aluminum. In particular, the measuring surface is a pore-sealed asphalt or a fine-grained, smooth surface. In particular, this measurement surface can be integrated as a movable floor 17 in the test chamber 3 . In other words, the measurement surface just described can be referred to below as the movable floor 17 . For example, the movable floor 17 can be moved horizontally in the interior 4 along the test chamber floor 8 depending on the measurement method.

For example, the radio test device 1 can assume a second test state in which the radio tests and/or antenna tests are carried out using the absorbers 16 . This is particularly advantageous for far-field measurements. With the aid of the movable floor 17, the test chamber 3 can be prepared automatically and in particular in an automated manner, depending on which test state is assumed. Thus, for example, the movable floor 17 can simply be moved away or cleared away without manual work processes. In particular, the movable floor 17 can be automatically positioned or moved by means of an adjustment device 18 . The adjusting device 18 is in particular an electromechanical positioning unit. For example, the movable floor 17 can be moved or traversed along rail systems in the interior 4 of the test chamber 3 .

In particular, the 1 a state of the radio test device 1 in which no tests are carried out. The individual steps with which the radio test device can be put into the first test state and into the second test state are explained in the following figures.

For example, the 2 1 shows a schematic plan view of the radio test device 1. It is only explained here how the first test state of the radio test device 1 can be set. The first steps are explained here.

In particular, the movable floor 17 is in a second position P2 here. This can be carried out by the adjustment device 18 . For this purpose, the movable floor 17 is positioned in the second position P2 with the aid of the adjustment device 18 . In the second position P2, the movable floor 17 can be positioned parallel to and superimposed on a stationary floor area 19 of the interior space 4 that is separate from the movable floor 17 . The floor area 19 is either the test chamber floor 8 or at least a partial area of the test chamber floor 8. In particular, it may be that, as in FIG 2 As can be seen, the movable floor 17 has a recess, so that the floor area 19 is exposed in this recess 20 . With the help of this recess 20, the movable floor 17 can be moved along a direction of movement 21 into a first position P1 that is different from the second position P2 (cf 5 ) are positioned.

In particular, in the 2 shown that the movable floor 17 is arranged above the test chamber floor 8. If the movable floor 17 is now positioned in the second position P2, a volume space 22 below a carrier device 23 is released. In particular, the vehicle 2 can be positioned or accommodated on the carrier device 23 in the interior 4 of the test chamber 3 for the radio tests and/or antenna tests. In particular, the carrier device is intended according to for positioning or picking up the vehicle. For example, the carrier device 23 is arranged centrally in the volume space 22 . Like in the 2 can be seen schematically, the recess 20 is designed in such a way that it can be slid around the carrier device 23 . Thus, the carrier device 23 and the recess 20 have a corresponding geometry. As a result, the carrier device 23 can be encompassed by the movable base 17 in some areas, in particular completely.

For example, the carrier device 23 can have a circular or elliptical base plate. In particular, the carrier device 23 can have carrier arms for picking up the vehicle at certain points. In the figures, the base plate is shown as an example of a receiving option for the carrier device 23 . Other accommodation options, not shown, such as the support arms or an H-shaped structure are also possible as alternatives.

In order to assume the first test state, the movable base 17 is now moved in the direction of the carrier device 23 along the direction of movement 21 .

In particular, the volumetric space 22 is an air space which is exposed around the carrier device 23 . In particular, the receiving option 23 in the interior 4 is exposed to the side and downwards.

If necessary, the movable floor can have edge protection 31 . With the edge protection 31, in particular in the second position P2 of the movable floor 17, an edge of the movable floor can be covered. In particular, the edge protection 31 can be used to shield sharp edges during the radio tests and/or antenna tests, so that the electromagnetically dangerous edges do not represent any interference variables during the tests.

A further function of the edge protection 31 is that a fall protection against the volume space 22 is formed during the second test state. Thus, test personnel can be protected from the volume space 22 .

the 3 shows a schematic side view of the EMC test chamber 1, in which the movable base 17 has now been moved so far that the movable base 17 covers the volume space 22. In particular, the floor area 19 and in particular the test chamber floor 8 are now exposed here. Since the movable floor 17 can be positioned above the floor area 19 in this exemplary embodiment and has therefore also been moved above the floor area 19 in the direction of movement 21, an overhang or an edge occurs at a transition 24 between the movable floor 17 and the floor area 19 viewed in the height direction. So that the movable floor 17 and the floor area 19 form a flat, contiguous surface, the movable floor 17 is moved downwards in the direction of the volumetric space 22 with the aid of the adjustment device 18 viewed in the vertical direction 25 .

In order not to obtain this transition 24, it can be provided in another exemplary embodiment that the movable floor 17 in the second position P2 is not slid above the floor area 19, but instead below the floor area 19 and below the test chamber floor 8. Thus, in this case, the compensation of the transition 24 does not have to be performed.

In particular, the movable floor 17 can be part of a measurement arrangement, with the movable floor 17 and the at least one antenna unit 15 forming this measurement arrangement for carrying out radio tests and/or antenna tests on the vehicle 2 in the first test state of the radio test device 1.

In the 4 it can be seen, for example, that the movable floor 17 and the floor area 19 or the test chamber floor 8 form a flat, continuous surface without edges. So that the movable floor 17 could be transferred from the second position to the first position P1, as can be seen in the previous figures, the base plate of the carrier device 23 shown here was positioned in a height position so that the floor 17 underneath moved in the direction of movement 21 could become. In order for the movable floor 17 and the adjacent standing plate as a carrier device 23 to form a continuous floor area for carrying out the tests for the first test state, the carrier device 23 can be moved in the height direction 25 in the direction of the volume space 22 with the aid of a lifting device 26.

In particular, the lifting device 26 is arranged in the volume space 22 below the carrier device 23 so that the carrier device 23 can be adjusted in the height direction perpendicular to the movable floor 17 during a transition between the test states with the aid of the lifting device 26 . In particular, the carrier device 23 and thus also the vehicle 2 that can be positioned on the carrier device 23 can be raised or lowered with the aid of the lifting device 26 .

In the 5 a further subsequent state of the radio test device 1 is then displayed. The floor area 19, the movable floor 17 and the base plate of the carrier device 23 now form a coherent, horizontal and flat surface. In order to be able to carry out tests, in particular in the first test state, the vehicle 2 can be positioned on the carrier device 23 . Various options, which are not shown in the figures, can be used for this. For example, the vehicle 2 can be driven manually from the preparation room 10 onto the carrier device 23 by test personnel. An automatic, automated solution would be advantageous. For this purpose, the sliding device 11 can be pushed through the gate 12 so that the vehicle 2 positioned on the sliding device 11 can be positioned or brought into the interior 4 of the test chamber 3 . For this purpose, for example, the displacement device 11 can also have a geometry that corresponds to the recess 20 and the carrier device 23 . The displacement device 11 can thus also be positioned along the carrier device 23 so that the vehicle 2 can be moved or positioned automatically onto the carrier device 23 . As soon as the vehicle 2 has been positioned on the carrier device 23 , the pushing device 11 can be positioned again along the pushing direction 27 from the interior 4 into the preparation room 10 . The radio tests and/or antenna tests can thus now be carried out in this state using the first test state of the radio test device 1 on the vehicle 2 .

So that the vehicle 2 can be better positioned on the carrier device 23, the carrier device 23 can have an electromechanical rotary device 28 (cf 2 ) exhibit. The carrier device 23 can be rotated 360 degrees around its own axis with the aid of the rotating device 28 . Thus, the vehicle 2 positioned on the carrier device 23 can be positioned in different positions or angles in the interior 4 for the tests.

In the following 6 until 8th the second test state of the radio test device 1 is now set and carried out schematically.

This shows the 6 1 shows a schematic side view of the radio test device 1. For example, the second test state can take place immediately after the first test state has been carried out. For the transition from the first test state to the second test state, the radio test device 1 can now return to the state similar to the illustrated exemplary embodiment in FIG 1 be transferred. For this purpose, the movable floor 17 and the carrier device 23 are now moved upwards in the vertical direction 25 perpendicularly, opposite to the volume space 22 . For this purpose, the carrier device 23 is first moved vertically upwards with the aid of the lifting device 26 . As soon as the carrier device 23 has positioned the vehicle 2 at a certain height, the movable floor 17 can also be moved vertically upwards with the aid of the adjusting device 18 . In this case, the movable floor 17 is again raised so far upwards that it can be slid or positioned above the floor area 19 and thus above the floor area 19 . It is also conceivable, as already described above, for the movable floor 17 to be moved downwards so that the movable floor 17 can be positioned below the floor area 19 .

In the 7 is now compared to that 6 shown that the movable floor 17 is positioned with the aid of the adjustment device 18 above the floor area 19 and in particular above the test chamber floor 8 in the second position P2. For this purpose, the movable base 17 is moved in a counter-movement 29 opposite to the direction of movement 21 with the aid of the adjusting device 18 . Thus, as here in the 7 to see the volume space 22 below the base plate 23 exposed again. As long as the movable floor 29 has not yet arrived in the end position of the second position P2, the vehicle 2 is held in the height position with the aid of the lifting device 26.

the 8th shows schematically the further process after the 7 the radio test device 1, in which the movable floor 17 has now finally taken the end position as the second position P2. After the movable floor 17 has assumed the second position P2, the vehicle 2 can be moved vertically downwards again in the direction of the volumetric space 22 with the aid of the carrier device 23 . The base plate 23 is in the same height position as the floor area 19 or the test chamber floor 8. The second test state can thus now be assumed and the respective radio tests and/or antenna tests can be carried out in the second test state. For this purpose, at least one measuring unit 30 is arranged in the volume space 22 below the carrier device 23 . These measuring units 30 can be part of the antenna units 15 or the absorbers 16 . For example, the measuring units 30 can be separate absorbers or separate antenna units. In particular, these measuring units 30 are only activated when the second test state is assumed. Especially the tests of the vehicle 2 can now be carried out via the absorbers 16 and the measuring units 30 in the second test state.

For example, the floor area 19 can be designed as a double floor, so that the movable floor 17 can be positioned above or below it in the second position in a simple manner.

Then also carried out second test state in the 8th can then return to the initial state as in the 1 to be set. This means that another vehicle can then be prepared and tested for the radio tests and/or antenna tests.

The following 9 and 10 schematically show two further exemplary embodiments of the radio test device 1.

For example, the 9 and 10 Exemplary embodiments in which the radio test device 1 does not have a preparation room 10 . The vehicle 2 is thus already positioned in the test chamber 3 on the test chamber floor 8 .

In the 9 the antenna unit 15 is not arranged centrally in the region of the carrier device 23, as previously described, but on a side wall 7 of the test chamber 3. In this case, the vehicle 2 can thus be moved with the aid of the movable floor 17. The similar embodiments that have already been explained in the previously described figures apply here.

In the 10 A similar case is shown, but here the volume space 22 is not arranged completely around the carrier device 23 . In this case, the volumetric space 22 is formed between a side wall 7 and the lifting device 26 . Thus, in the 10 the volume space 22 only has a lateral area as exposed.

In particular, in the 9 and 10 shown that the shielding elements 14 completely enclose the test chamber 3 and thus shield against electromagnetic radiation or interference.

Reference List

1

radio test device

2

vehicle

3

test chamber

4

inner space

5

walls

6

ceiling walls

7

side walls

8th

test chamber floor

9

outdoor area

10

Preparation room of the shifting device

12

Goal

13

outsides

14

shielding elements

15

antenna unit

16

absorber

17

moveable floor

18

adjusting device

19

floor area

20

recess

21

direction of movement

22

volume space

23

carrier device

24

crossing

25

height direction

26

lifting device

27

sliding direction

28

rotating device

29

countermovement

30

unit of measure

31

edge protection

P1

first position

p2

second position

Claims (10)

Radio test device (1) for a vehicle (2), with - a test chamber (3) in which the vehicle (2) can be introduced for radio tests and/or antenna tests, the test chamber (3) having an interior ( 4) which is delimited by walls (5) of the test chamber (3), - at least one antenna unit (15) which is arranged in or on the interior (4) for carrying out the radio tests and/or antenna tests on Vehicle (2), characterized by - a carrier device (23) in the interior (4) of the test chamber (3), which is intended for positioning the vehicle (2) thereon, - a movable floor (17) as a wall of the test chamber (3 ), which is separate from the base plate (23), - an adjustment device (18) of the radio test device Device (1), with which the movable floor (17) in a first test state of the radio test device (1) in a first position (P1) is positioned, wherein in the first position (P1) of the movable floor (17) of the movable is arranged adjacent to the floor (17) and encompasses the carrier device (23) at least in some areas, and - with the adjustment device (18) of the radio test device (1), the movable floor (17) is in a second test state of the radio test device that differs from the first test state (1) is positioned in a second position (P2) different from the first position (P1), wherein in the second position (P2) of the movable floor (17) a volume space (22) is released below the carrier device (23), so that the Support device (23) in the interior (4) of the test chamber (3) is free to the side and down. Radio test device (1) after claim 1 , characterized in that the carrier device (23) has, in particular an electromechanical, rotary device (28), wherein the carrier device (23) can be rotated by 360° by means of the rotary device (28). Radio test device (1) after claim 1 or 2 , characterized in that the carrier device (23) has at least two carrier arms for receiving the vehicle (2) and/or a base plate on which the vehicle (2) can be positioned, in particular the base plate is circular, in particular elliptical. Radio test device (1) according to one of the preceding claims, characterized in that on the walls (5) directed towards the interior (4), in particular side walls (7) and/or ceiling walls (6), absorbers (16) are provided in certain areas or covering the entire surface in particular EMC absorbers, in particular microwave absorbers, are arranged, with the absorbers being able to absorb electromagnetic waves in the first test state and/or in the second test state of the radio test device (1). Radio test device (1) according to one of the preceding claims, characterized in that the test chamber (3) is delimited by outsides (13) in an outside area (9) facing away from the interior (4), with areas on the outsides (13) shielding elements (14) are arranged, in particular area-wide, with the shielding elements (14) shielding the interior (4) of the test chamber (3) from electromagnetic interference. Radio test device (1) according to one of the preceding claims, characterized in that at least one measuring unit (30) is arranged in the volume space (22) below the carrier device (23), wherein in the second test state of the radio test device (1) the at least one measuring unit (30) can be activated to carry out radio tests and/or antenna tests. Radio test device (1) according to one of the preceding claims, characterized in that the movable base (17) is part of a measuring arrangement, wherein in the first test state of the radio test device (1) the movable base (17) and the at least one antenna unit (15) form the measuring arrangement for carrying out radio tests and/or antenna tests on the vehicle (2). Radio test device (1) according to one of the preceding claims, characterized in that in the second position (P2) of the movable floor (17), the movable floor (17) is parallel to and superimposed on a floor region (19 ) of the interior (4) is positioned. Radio test device (1) after claim 8 , characterized in that a lifting device (26) is arranged in the volume space (22) below the carrier device (23), the carrier device (23) being moved perpendicularly to the movable floor (17) with the lifting device (26) during a transition between the test states. adjustable in height. Method for carrying out radio tests and/or antenna tests on a vehicle (2) with a radio test device (1) according to one of the preceding Claims 1 until 9 , wherein - the vehicle (2) is brought into the test chamber (3) for the radio tests and/or antenna tests, and - the radio tests and/or antenna tests on the vehicle (2) with the at least one antenna unit (15) are carried out, characterized by - positioning the vehicle (2) on a carrier device (23) in the interior (4) of the test chamber (3), - providing at least two possible positions of the movable floor (17) for selectively carrying out one first test state or a second test state, - setting a test state by carrying out: - positioning the movable floor (17) in the first test state of the radio test device (1) in the first position (P1), or - positioning the movable floor (17 ) in the second position, which is different from the first position (P1). Position (P2) in a second test state of the radio test device (1) that differs from the first test state, with the volume space (22) below the carrier device (23) being released in the second position (P2) of the movable floor (17), so that the Support device (23) in the interior (4) of the test chamber (3) is free to the side and down.

Images