Interference testing device for testing receiving performance of wireless charger

Abstract

The utility model discloses an interference testing device for testing the receiving performance of a wireless charger, and the device comprises a detection coil which is a flexible winding, and the testing frequency of the detection coil is 10kHz-300kHz and 6.78 MHz; the detection coil is connected with the adapter; the detection coil is connected with the frequency spectrograph through an adapter; the signal generator is connected with the adapter; by using the adapter, all required interfaces are integrated on one component, and meanwhile, a power amplifier is removed, so that the erection of equipment is greatly simplified, the test difficulty is simplified, uncertain factors brought by a test instrument in the test process are reduced, and the test accuracy is further improved.

Description

Technical Field

[0001] This utility model relates to the field of wireless signal testing technology, and in particular to an interference testing device for testing the receiving performance of a wireless charger. Background Technology

[0002] Wireless charging is widely used in electronic products because it eliminates the need for charging cables and makes charging more convenient. After wireless chargers are manufactured, their performance is usually tested to ensure their quality. Currently, the testing of wireless charger receiving performance typically uses a coil with a current clamp and requires a power amplifier to meet the testing requirements. Therefore, the setup is relatively complex, requires many instruments, and results in lower testing accuracy. Utility Model Content

[0003] To overcome the above-mentioned shortcomings, the purpose of this utility model is to provide an interference testing device for testing the receiving performance of a wireless charger. By using an adapter, all the necessary interfaces are integrated into one component, and the power amplifier is eliminated, which greatly simplifies the setup of the device, thereby simplifying the testing difficulty and reducing the uncertainties brought by the testing instruments during the testing process, thus improving the accuracy of the test.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: an interference testing device for testing the receiving performance of a wireless charger, comprising:

[0005] The detection coil is a flexible winding, and the test frequency of the detection coil is 10kHz-300kHz and 6.78MHz.

[0006] An adapter, wherein the detection coil is connected to the adapter;

[0007] A spectrum analyzer, wherein the detection coil is connected to the spectrum analyzer via the adapter;

[0008] A signal generator connected to the adapter.

[0009] In this technical solution, the detection coil is used to receive signals to test the receiving performance of the wireless charger. The adapter is used to transfer the signal received by the detection coil to the spectrum analyzer for analysis. The signal generator is used to generate the interference signal required for testing. By using the adapter, all the necessary interfaces are integrated into one component, and the power amplifier is eliminated, which greatly simplifies the setup of the equipment, thereby simplifying the testing process and reducing the uncertainties brought by the testing instruments, thus improving the accuracy of the test.

[0010] In some implementations, the adapter is an N-type socket.

[0011] In this technical solution, an N-type socket is used to integrate all the interfaces.

[0012] In some embodiments, the interference testing apparatus for testing the reception performance of a wireless charger further includes an oscilloscope connected to the detection coil via the adapter.

[0013] In this technical solution, the accuracy of the interference testing device for testing the receiving performance of a wireless charger is further determined by using an oscilloscope to detect the signal collected by the test coil.

[0014] In some embodiments, the interference testing apparatus for testing the reception performance of a wireless charger further includes a parallel terminal connected in parallel with the oscilloscope.

[0015] In this technical solution, the parallel terminal is used to divide the voltage for the oscilloscope.

[0016] In some implementations, the internal resistance of the parallel terminal is 50Ω.

[0017] In this technical solution, a 50Ω parallel terminal is used to divide the voltage for the oscilloscope.

[0018] In some embodiments, the interference testing apparatus for testing the reception performance of a wireless charger further includes a mounting bracket on which the adapter is mounted.

[0019] In this technical solution, the mounting bracket is used to fix the adapter, thereby further reducing uncertainties.

[0020] In some implementations, the adapter includes an input port and a detection port, the input port being connected to the signal generator and the detection port being connected to the spectrum analyzer.

[0021] In this technical solution, the interference signal of the input signal generator is input through the input port, and the detection port is connected to the spectrum analyzer, thereby transmitting the detection data to the spectrum analyzer.

[0022] The beneficial effects of this utility model are that by using an adapter, all the necessary interfaces are integrated into one component, and the power amplifier instrument is eliminated, which greatly simplifies the equipment setup, thereby simplifying the testing difficulty and reducing the uncertainties brought by the testing instruments during the testing process, thus improving the accuracy of the test. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the interference testing device for testing the receiving performance of a wireless charger according to an embodiment of the present invention.

[0024] In the diagram: 1. Detection coil; 2. Adapter; 3. Spectrum analyzer; 4. Signal generator. Detailed Implementation

[0025] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0026] It should be noted that in the description of this utility model, the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. The terms "horizontal," "vertical," and "suspended," etc., do not indicate that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] Combined with appendix Figure 1 As shown, this utility model provides an interference testing device for testing the receiving performance of a wireless charger, comprising:

[0028] The detection coil 1 is a flexible winding, and the test frequency of the detection coil 1 is 10kHz-300kHz and 6.78MHz.

[0029] Adapter 2, the detection coil 1 is connected to the adapter 2;

[0030] The spectrum analyzer 3 is connected to the detection coil 1 via the adapter 2.

[0031] Signal generator 4, which is connected to adapter 2.

[0032] The detection coil 1 is used to receive signals to test the receiving performance of the wireless charger. The adapter 2 is used to transfer the signal received by the detection coil 1 to the spectrum analyzer 3 for analysis. The signal generator 4 is used to generate the interference signal required for the test. By using the adapter 2, all the necessary interfaces are integrated into one component, and the power amplifier is eliminated, which greatly simplifies the setup of the equipment, thereby simplifying the testing process and reducing the uncertainties brought by the testing instruments, thus improving the accuracy of the test.

[0033] The transmission frequency of the signal generator 4 is adjusted, and the voltage value on the detection coil 1 is read by the spectrum analyzer 3 to determine whether the interference signal meets the test standard. For example, for the detection coil 1 with a diameter of 0.85 meters, the spectrum analyzer 3 reads a voltage of 79mV (97.9dBμV) which corresponds to a magnetic field strength of 0.1A / m (100dBμA / m) at the center of the detection coil 1. This value is valid in the frequency range of 10kHz to 300kHz.

[0034] For a detection coil 1 with a diameter of 2.0 meters, the spectrum analyzer 3 reads a voltage of 200 mV (106 dBμV) corresponding to a magnetic field strength of 0.1 A / m (100 dBμA / m) at the center of the detection coil 1, which is valid in the frequency range of 10 kHz to 300 kHz.

[0035] The voltage of detection coil 1 is directly proportional to the strength of the magnetic field generated. For example, when the diameter of detection coil 1 is 0.85 meters, if the voltage of detection coil 1 is reduced by 10 times, the magnetic field strength at the center of detection coil 1 will also be reduced by 10 times.

[0036] In some implementations, the adapter is an N-type socket, which integrates the various interfaces.

[0037] In some embodiments, the interference testing apparatus for testing the reception performance of a wireless charger further includes an oscilloscope connected to the detection coil via the adapter. By using the oscilloscope to detect the signal collected by the test coil, the accuracy of the interference testing apparatus for testing the reception performance of the wireless charger can be further determined.

[0038] In some embodiments, the interference testing apparatus for testing the reception performance of a wireless charger further includes a parallel terminal connected in parallel with the oscilloscope, the parallel terminal being used to perform voltage division for the oscilloscope.

[0039] In some implementations, the internal resistance of the parallel terminal is 50Ω, and the 50Ω parallel terminal is used to perform voltage division for the oscilloscope.

[0040] In some implementations, the interference testing apparatus for testing the reception performance of a wireless charger further includes a mounting bracket on which the adapter is mounted. The mounting bracket is used to secure the adapter, thereby further reducing uncertainties.

[0041] In some implementations, the adapter includes an input port and a detection port. The input port is connected to the signal generator, and the detection port is connected to the spectrum analyzer. By using the input port to input interference signals from the signal generator and the detection port to connect to the spectrum analyzer, the detection data is transmitted to the spectrum analyzer.

[0042] In summary, this utility model provides an interference testing device for testing the receiving performance of a wireless charger. By using an adapter, all the necessary interfaces are integrated into one component, and the power amplifier is eliminated, which greatly simplifies the setup of the device, thereby simplifying the testing process and reducing uncertainties caused by testing instruments, thus improving the accuracy of the test.

[0043] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it. They cannot be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the protection scope of this utility model.

Claims

1. An interference testing device for testing the receiving performance of a wireless charger, characterized in that, include: The detection coil is a flexible winding, and the test frequency of the detection coil is 10kHz-300kHz and 6.78MHz. Adapter, the detection coil is connected to the adapter; A spectrum analyzer, wherein the detection coil is connected to the spectrum analyzer via the adapter; A signal generator connected to the adapter.

2. The interference testing device for testing the receiving performance of a wireless charger according to claim 1, characterized in that, The adapter is an N-type socket.

3. The interference testing device for testing the receiving performance of a wireless charger according to claim 1, characterized in that, It also includes an oscilloscope, which is connected to the detection coil via the adapter.

4. The interference testing device for testing the receiving performance of a wireless charger according to claim 3, characterized in that, It also includes a parallel terminal, which is connected in parallel with the oscilloscope.

5. The interference testing device for testing the receiving performance of a wireless charger according to claim 4, characterized in that, The internal resistance of the parallel terminal is 50Ω.

6. The interference testing apparatus for testing the receiving performance of a wireless charger according to claim 1, characterized in that, It also includes a mounting bracket on which the adapter is mounted.

7. The interference testing apparatus for testing the receiving performance of a wireless charger according to claim 1, characterized in that, The adapter includes an input port and a detection port. The input port is connected to the signal generator, and the detection port is connected to the spectrum analyzer.

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