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Vehicle-mounted wireless communication product electromagnetic emission test system and method based on 5G real network signal

A test system, vehicle-mounted wireless technology, applied in the transmission system, transmitter monitoring, electrical components, etc., can solve the problems of weak 5G signal, large space attenuation of 5G signal, electromagnetic interference of vehicle-mounted electronic and electrical equipment, etc., to simplify the circuit structure, The effect of avoiding interference

Pending Publication Date: 2022-04-22
VKAN CERTIFICATION & TESTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The development of 5G technology and its application in the automotive field, high-frequency radio frequency signals and large-bandwidth data transmission bring great risks of electromagnetic interference to on-board electronic and electrical equipment
[0005] So far, the coverage of 5G signals is not extensive, and the spatial attenuation of 5G signals is relatively large. Some laboratories have no 5G signal coverage or the received 5G signals are very weak, which is not enough to support testing.
In addition, even if the 5G signal near the laboratory is strong enough, the 5G tested sample is located in the darkroom, and the outdoor 5G signal cannot be transmitted to the darkroom.

Method used

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  • Vehicle-mounted wireless communication product electromagnetic emission test system and method based on 5G real network signal
  • Vehicle-mounted wireless communication product electromagnetic emission test system and method based on 5G real network signal
  • Vehicle-mounted wireless communication product electromagnetic emission test system and method based on 5G real network signal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]An electromagnetic emission test system for vehicle-mounted wireless communication products based on 5G real network signals provided in this embodiment is as follows: figure 1 shown. The DC stabilized power supply 1, the storage battery 2, and the artificial power supply network 3 constitute the power supply system in this embodiment, which is connected to the simulated load of the 5G tested sample. The load usually includes audio, microphone, interface circuit, etc. The interface circuit usually includes, such as the power interface of the sample, communication interface, etc. Loaded buses such as LIN or CAN or CAN FD or Ethernet are introduced into the dark room by optical fiber 13 through the optical fiber converter, and are connected with monitoring equipment 14 . 15 is a plastic hose, and the present embodiment includes two plastic hoses, which are respectively plastic hose one and two. One of the ends of the plastic hoses 1 and 2 is stretched into the anechoic c...

Embodiment 2

[0066] An electromagnetic emission test system for vehicle-mounted wireless communication products based on 5G real network signals provided in this embodiment is as follows: figure 2 Shown, its general structure is identical with embodiment 1, difference is:

[0067] It is a multi-wireless communication test system. 21 is the 5G tested sample 4 that is different from the 5G antenna 7 and other wireless communication antennas in the communication frequency band, such as GNSS antennas. 22 is a wireless communication source communicating with the antenna 21, its input and output ports are connected with the high-frequency antenna 82 through the radio frequency cable 10, and the high-frequency antenna 82 extends into the dark room and is enclosed in the metal shielding box 61.

[0068] The method that utilizes the multi-wireless communication test system in embodiment 2 to test is as follows:

[0069] Step 1: According to the communication standard of the 5G test sample, arran...

Embodiment 3

[0084] An electromagnetic emission test system for vehicle-mounted wireless communication products based on 5G real network signals provided in this embodiment is as follows: image 3 Shown, the difference of this embodiment and embodiment 1 only lies in:

[0085] The PRU of the 5G micro base station is directly introduced into the metal shielding box 61 in the dark room through the transmission cable 23 . Refer to Example 1 for the test method using this system.

[0086] Embodiment 3 adopts a method different from that of Embodiment 1. It directly introduces the PRU of the 5G micro base station into the darkroom, which further simplifies the circuit structure and also prevents the signal from being interfered by external unknown signals.

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Abstract

The invention discloses a 5G real network signal-based vehicle-mounted wireless communication product electromagnetic emission test system and method, and the test system is characterized in that a 5G micro base station is additionally arranged outside a darkroom, and a PRU of the 5G micro base station is directly introduced into a shielding box in the darkroom, or the signal of the PRU is introduced into the shielding box in the darkroom after the signal of the PRU is switched with a high-frequency antenna in an outdoor shielding box; the 5G signal communication of the 5G to-be-tested sample is carried out in the shielding box in the darkroom, and the sound transmission system is additionally arranged, so that the 5G signal darkroom coverage problem and the sound signal transmission problem in the test process are solved, and the test problem of coexistence of multiple wireless communication antennas is further solved.

Description

technical field [0001] The invention belongs to the technical field of electromagnetic emission testing, and in particular relates to an electromagnetic emission testing system and method for vehicle-mounted wireless communication products based on 5G real network signals. Background technique [0002] The development of 5G technology and its application in the automotive field, high-frequency radio frequency signals and large-bandwidth data transmission bring great risks of electromagnetic interference to vehicle electronic and electrical equipment. In order to better test the potential electromagnetic emission of vehicle-mounted 5G products, a comprehensive tester is generally used to simulate the real network and connect to the 5G test sample. Data, etc., cannot fully simulate the real connection of the 5G tested sample. [0003] In the standard GB / T 18655-2018, the operating conditions of the samples are introduced as follows: Different operating conditions of the teste...

Claims

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Application Information

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IPC IPC(8): H04B17/00H04B17/10
CPCH04B17/00H04B17/0085H04B17/10Y02D30/70
Inventor 邵华东翦文斌郭锦添胡秀怡李百丰孔伟全
Owner VKAN CERTIFICATION & TESTING