Interference source simulation generator

Abstract

The utility model provides an interference source simulation generator, comprising an industrial control PC, a signal source module, a first waveform generation module, a second waveform generation module, a control module and an output switching module, the industrial control PC is respectively in communication connection with the signal source module, the first waveform generation module and the control module; the signal input end of the first waveform generation module is connected with the output end of the signal source module, the signal input end of the second waveform generation module is connected with the output end of the signal source module, and the output switching module is connected with the output end of the control module. According to the interference source simulation generator provided by the utility model, all requirements on interference source simulation in a noise immunity test of ripple voltage can be met; the integration degree is high, the size is small, moving and transferring are convenient, and the application range is wider; the industrial control PC and the control module are arranged, the man-machine interaction requirement is met, meanwhile, data of the interference source can be conveniently set through the industrial control PC, and more diversified interference source requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical performance testing, in particular to an interference source simulation generator. Background Art

[0002] Ripple is a common phenomenon of voltage and current fluctuations in DC circuits. High-voltage components in electric vehicles can all generate ripple. Common interference source simulators used in ripple immunity testing of high-voltage components are typically large, typically measuring up to 35U*3. They also utilize expensive linear power amplifiers, which increase costs. They also have limited adaptability and are typically limited to testing one or a few specific power sources, making them unsuitable for newer power sources. Utility Model Content

[0003] The purpose of the present utility model is to provide an interference source simulation generator, which can solve one or more of the above-mentioned problems in the prior art.

[0004] According to one aspect of the present utility model, an interference source simulation generator is provided, including an industrial control PC, a signal source module, a first waveform generation module, a second waveform generation module, a control module and an output switching module. The industrial control PC is communicatively connected to the signal source module, the first waveform generation module and the control module respectively. The signal input end of the first waveform generation module is connected to the output end of the signal source module, the output end of the first waveform generation module is connected to the output end of the interference source simulation generator through the output switching module, the signal input end of the second waveform generation module is connected to the output end of the signal source module, the signal input end of the second waveform generation module is connected to the output end of the control module, the output end of the second waveform generation module is connected to the output end of the interference source simulation generator through the output switching module, the output switching module is connected to the output end of the control module, and the output switching module is used to control the on-off between the output end of the interference source simulation generator and the output ends of the first waveform generation module and the second waveform generation module.

[0005] In some implementations, the industrial control PC is communicatively connected to the signal source module, the first waveform generation module, and the control module via a switch.

[0006] In some embodiments, the first waveform generating module is a programmable power supply, an output switching module is connected between the positive output terminal of the programmable power supply and the positive output terminal of the interference source simulation generator, and the negative output terminal of the programmable power supply is connected to the negative output terminal of the interference source simulation generator.

[0007] In some embodiments, the second waveform generation module includes an audio power amplifier and a coupling transformer, the input end of the audio power amplifier is connected to the output end of the signal source module and the output end of the control module respectively, the input end of the coupling transformer is connected to the output end of the audio power amplifier, and the output end of the coupling transformer is connected to the output end of the interference source simulation generator through the output switching module.

[0008] In some embodiments, the output switching module includes a switch K1, a switch K2, and a switch K3. The switch K3 is arranged between the first input terminal and the second input terminal of the coupling transformer. The first output terminal of the coupling transformer is connected to the positive output terminal of the first waveform generation module. The second output terminal of the coupling transformer is connected to the positive output terminal of the interference source simulation generator through the switch K1. The third output terminal of the coupling transformer is connected to the positive output terminal of the interference source simulation generator through the switch K2.

[0009] In some embodiments, the second output terminal of the coupling transformer is a center tap of the secondary side of the coupling transformer.

[0010] The interference source simulation generator provided by the utility model can meet all the requirements for interference source simulation in the ripple voltage immunity test; it has a high degree of integration, a small size, is easy to move and transport, and has a wider range of uses; it is equipped with an industrial control PC and a control module, which not only meets the needs of human-computer interaction, but also facilitates the setting of interference source data through the industrial control PC to meet more diverse interference source needs.

[0011] In addition, in the technical solution of the present utility model, anything not specifically described can be implemented by adopting conventional means in the art. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, a brief introduction will be given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic structural diagram of an interference source simulation generator provided in one embodiment of the present utility model.

[0014] Figure 2 This is a partial circuit diagram of an interference source simulation generator provided in one embodiment of the present utility model. DETAILED DESCRIPTION

[0015] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0016] Example:

[0017] In this embodiment, refer to the attached manual. Figure 1-2 , provides an interference source simulation generator, including an industrial control PC 1, a signal source module 2, a first waveform generation module 3, a second waveform generation module 4, a control module 5 and an output switching module 6.

[0018] Among them, the industrial control PC1 is respectively connected to the signal source module 2, the first waveform generation module 3 and the control module 5. The industrial control PC1 is used to receive the interference source data input by the user and issue instructions so that the interference source simulation generator can output the waveform set by the user.

[0019] The signal input end of the first waveform generation module 3 is connected to the output end of the signal source module 2 , and the output end of the first waveform generation module 3 is connected to the output end of the interference source simulation generator through the output switching module 6 .

[0020] The signal input end of the second waveform generation module 4 is connected to the output end of the signal source module 2, the signal input end of the second waveform generation module 4 is connected to the output end of the control module 5, and the output end of the second waveform generation module 4 is connected to the output end of the interference source simulation generator through the output switching module 6.

[0021] The output switching module 6 is connected to the output end of the control module 5 , and is used to control the connection and disconnection between the output end of the interference source simulation generator and the output ends of the first waveform generation module 3 and the second waveform generation module 4 .

[0022] In an optional embodiment, the industrial control PC 1 can be connected to the signal source module 2, the first waveform generation module 3 and the control module 5 via the switch 7. In this way, the industrial control PC 1 can communicate with other modules in the interference source simulation generator in a convenient and fast manner.

[0023] The industrial control PC 1 can be connected to the switch 7 through the RJ45 interface.

[0024] In an optional embodiment, the signal source module 2 can generate a DC voltage of 0-800 V. The first waveform generation module 3 and the second waveform generation module 4 can superimpose a sine wave with a frequency of 10 Hz to 150 kHz and an amplitude of 8 V to 24 V on the DC voltage.

[0025] In an optional embodiment, the first waveform generating module 3 may be a programmable power supply. An output switching module 6 is connected between the positive output terminal of the programmable power supply and the positive output terminal of the interference source simulation generator, and the negative output terminal of the programmable power supply is connected to the negative output terminal of the interference source simulation generator. Thus, the programmable power supply can superimpose a sine wave of 10 Hz to 5 kHz on the DC voltage.

[0026] The programmable power supply can be an American Power Design (APD) power supply, specifically the chip model APD15C06. Alternatively, the programmable power supply can also be a chip model EM P8966-15VC06GRR.

[0027] In an optional embodiment, the second waveform generation module 4 includes an audio power amplifier 41 and a coupling transformer 42. The input end of the audio power amplifier 41 is respectively connected to the output end of the signal source module 2 and the output end of the control module 5. The input end of the coupling transformer 42 is connected to the output end of the audio power amplifier 41. The output end of the coupling transformer 42 is connected to the output end of the interference source simulation generator via the output switching module 6. Thus, the audio power amplifier 41 and the coupling transformer 42 can superimpose a sine wave of 5kHz to 150kHz on the DC voltage.

[0028] The audio power amplifier 41 may be a chip of RSG40C20 or TAS5805M.

[0029] In an optional embodiment, the output switching module 6 may include a switch K1, a switch K2 and a switch K3, the switch K3 is arranged between the first input terminal and the second input terminal of the coupling transformer 42, the first output terminal of the coupling transformer 42 is connected to the positive output terminal of the first waveform generation module 3, the second output terminal of the coupling transformer 42 is connected to the positive output terminal of the interference source simulation generator through the switch K1, and the third output terminal of the coupling transformer 42 is connected to the positive output terminal of the interference source simulation generator through the switch K2.

[0030] The second output terminal of the coupling transformer 42 is the center tap of the secondary side of the coupling transformer 42. Therefore, by controlling the switches in the output switching module 6 by the control module 5, the coupling transformer can be set to a voltage ratio of 2:1 and a current ratio of 2:1. The interference source generated in this case can be used to test high-current products to be tested.

[0031] The coupling transformer 42 may be a coupling transformer of model TPT-7637-4C100B.

[0032] The interference source simulation generator provided by this utility model has the following situations when in use:

[0033] When the sine wave superimposed on the DC voltage is 10Hz to 5kHz, the industrial control PC 1 sends the relevant parameters and instructions to the signal source module 2, the first waveform generation module 3 and the control module 5 respectively. The control module 5 controls the switch K1 in the output switching module 6 to be open and the switches K2 and K3 to be closed according to the instructions of the industrial control PC 1. The signal source module 2 generates a DC voltage of the corresponding voltage according to the parameters sent by the industrial control PC 1 and outputs it to the first waveform generation module 3. The first waveform generation module 3 superimposes the sine wave on the DC voltage according to the parameters sent by the industrial control PC 1 and outputs it.

[0034] When the sine wave superimposed on the DC voltage is 5kHz to 150kHz, the industrial control PC 1 sends relevant parameters and instructions to the signal source module 2 and the control module 5 respectively. The control module 5 controls the switch K3 in the output switching module 6 to be opened according to the instruction of the industrial control PC 1, and one of the switches K1 and K2 is closed, and the other is opened. The signal source module 2 generates a DC voltage of the corresponding voltage according to the parameters sent by the industrial control PC 1 and outputs it to the second waveform generation module 4. The second waveform generation module 4 superimposes the sine wave on the DC voltage according to the parameters sent by the industrial control PC 1 and outputs it.

[0035] The interference source simulation generator provided by the utility model can meet all the requirements of the ISO21498 test item "Ripple voltage immunity test"; it has a high degree of integration, a small size, is easy to move and transport, and has a wider range of uses; it is equipped with an industrial control PC and a control module, which not only meets the needs of human-computer interaction, but also facilitates the setting of interference source data through the industrial control PC to meet more diverse interference source needs.

[0036] The above is only an optional implementation of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. Interference source simulation generator, characterized in that, It includes an industrial control PC (1), a signal source module (2), a first waveform generation module (3), a second waveform generation module (4), a control module (5) and an output switching module (6), The industrial control PC (1) is respectively connected to the signal source module (2), the first waveform generation module (3) and the control module (5). The signal input end of the first waveform generation module (3) is connected to the output end of the signal source module (2), and the output end of the first waveform generation module (3) is connected to the output end of the interference source simulation generator through the output switching module (6). The signal input end of the second waveform generation module (4) is connected to the output end of the signal source module (2), the signal input end of the second waveform generation module (4) is connected to the output end of the control module (5), and the output end of the second waveform generation module (4) is connected to the output end of the interference source simulation generator through the output switching module (6). The output switching module (6) is connected to the output end of the control module (5), and the output switching module (6) is used to control the connection and disconnection between the output end of the interference source simulation generator and the output ends of the first waveform generation module (3) and the second waveform generation module (4).

2. The interference source simulation generator according to claim 1, characterized in that The industrial control PC (1) is communicatively connected with the signal source module (2), the first waveform generation module (3) and the control module (5) via a switch (7).

3. The interference source simulation generator according to claim 1, characterized in that: The first waveform generating module (3) is a programmable power supply, the output switching module (6) is connected between the positive output terminal of the programmable power supply and the positive output terminal of the interference source simulation generator, and the negative output terminal of the programmable power supply is connected to the negative output terminal of the interference source simulation generator.

4. The interference source simulation generator according to claim 1, characterized in that: The second waveform generation module (4) includes an audio power amplifier (41) and a coupling transformer (42), The input end of the audio power amplifier (41) is connected to the output end of the signal source module (2) and the output end of the control module (5), respectively. The input end of the coupling transformer (42) is connected to the output end of the audio power amplifier (41), and the output end of the coupling transformer (42) is connected to the output end of the interference source simulation generator through the output switching module (6).

5. The interference source simulation generator according to claim 4, characterized in that: The output switching module (6) includes a switch K1, a switch K2 and a switch K3. The switch K3 is arranged between the first input terminal and the second input terminal of the coupling transformer (42); the first output terminal of the coupling transformer (42) is connected to the positive output terminal of the first waveform generation module (3); the second output terminal of the coupling transformer (42) is connected to the positive output terminal of the interference source simulation generator through the switch K1; and the third output terminal of the coupling transformer (42) is connected to the positive output terminal of the interference source simulation generator through the switch K2.

6. The interference source simulation generator according to claim 5, characterized in that: The second output end of the coupling transformer (42) is a center tap of the secondary side of the coupling transformer (42).

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