Noise injection device and anti-interference test equipment
By coupling a noise generator and signal lines within the PCB board to achieve noise injection, the complex SSD controller anti-jitter function acceptance problem in the prior art is solved, improving testing efficiency and automation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN RAMAXEL MEMORY TECH LTD
- Filing Date
- 2025-03-27
- Publication Date
- 2026-05-12
AI Technical Summary
In the existing technology, the acceptance of the anti-jitter function of SSD controllers requires the use of an external signal generator and a dedicated noise injection test board, which is complex and not conducive to automated testing.
Noise injection is achieved by using a noise generator and signal lines within the PCB board. The noise signal is simulated by the MCU and coupled with the signal under test between PCB layers, thus simplifying the testing process and improving automation efficiency.
It achieves simple and efficient noise injection, improves the development and verification efficiency and robustness of SSD controllers, and simplifies the testing process.
Smart Images
Figure CN224231832U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of semiconductor testing technology, and in particular to a noise injection device and an anti-interference testing equipment. Background Technology
[0002] Many I / O pins in an SSD controller have debouncing or filtering functions to filter ESD noise and unwanted noise in the system, thereby improving the robustness of the SSD.
[0003] For the newly developed SSD controller, the acceptance testing of the anti-jitter function requires the use of an external signal generator and a dedicated noise injection test board. This testing method is complex to implement and not conducive to automated testing. Utility Model Content
[0004] This invention provides a noise injection device and an anti-interference testing equipment to solve at least one of the technical problems mentioned in the background art.
[0005] In a first aspect, this utility model provides a noise injection device, which includes a PCB board, a noise generator, a noise signal line, and a target signal line; the noise generator, the noise signal line, and the target signal line are all disposed within the PCB board; the noise generator is connected to the noise signal line, and the noise generator is used to output a noise signal to the noise signal line; the target signal line is used to transmit a signal to be measured; wherein, the noise signal is coupled to the signal to be measured.
[0006] A further technical solution is that the PCB board has a multi-layer structure, and the noise signal line and the target signal line are respectively located in two different layers of the PCB board.
[0007] A further technical solution is that the noise signal line and the target signal line are respectively located in two adjacent layers of the PCB board.
[0008] A further technical solution is that the noise signal line and the target signal line are at least partially parallel to each other.
[0009] A further technical solution is that the coupling length between the noise signal line and the target signal line is 1 inch to 5 inches.
[0010] A further technical solution is that the noise injection device further includes a grounding resistor, and the noise signal line is grounded through the grounding resistor.
[0011] A further technical solution is that the noise injection device further includes a target device, which is disposed on the PCB board, and the target signal line is connected to the target device.
[0012] A further technical solution is that the noise injection device also includes a host computer, which is connected to the target signal line.
[0013] A further technical solution is that the noise generator is an MCU.
[0014] Secondly, this utility model provides an anti-interference testing device, which includes the noise injection device as described in the first aspect.
[0015] The technical solution provided by this utility model embodiment has the following advantages compared with the prior art:
[0016] In this embodiment of the invention, the noise injection device includes a PCB board, a noise generator, a noise signal line, and a target signal line. The noise generator, noise signal line, and target signal line are all housed within the PCB board. The noise generator is connected to the noise signal line and is used to output a noise signal to the noise signal line. The target signal line is used to transmit the signal under test. The noise signal is coupled to the signal under test. This noise injection device injects a noise signal using a noise generator inside the PCB board, eliminating the need for an external signal generator and a dedicated noise injection test board. This design is simple to implement, highly efficient, and facilitates automated testing.
[0017] In this invention, noise injection is achieved by simulating noise signals through MCU GPIO on the PCB board and coupling the signals under test on the PCB through interlayer coupling. The noise level is adjusted by configuring the drive strength and cycle of the GPIO, thereby verifying the noise filtering and anti-jitter functions of the SSD controller. This solution can be implemented by controlling the MCU through the original host manufacturer, which greatly improves the development and verification efficiency of the SSD controller and ensures the robustness of the SSD controller. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the present invention and, together with the description, serve to explain the principles of the present invention.
[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.
[0021] Figure 1 A schematic diagram of a noise injection device provided in an embodiment of this utility model;
[0022] Figure 2 This is a test result diagram of an embodiment of this utility model.
[0023] Explanation of reference numerals in the attached figures:
[0024] PCB board 10, noise generator 20, noise signal line 30, target signal line 40, host 50, target device 60, grounding resistor R1. Detailed Implementation
[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0026] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.
[0027] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.
[0028] To address the technical problem that the acceptance of anti-shake function in existing technologies requires an external signal generator and a dedicated noise injection test board, which is complex and not conducive to test automation, this invention provides a noise injection device. This noise injection device injects noise signals using a noise generator inside the PCB board, eliminating the need for an external signal generator and a dedicated noise injection test board. This makes it simple, efficient, and easy to automate the test.
[0029] See Figures 1-2 This utility model provides a noise injection device, which includes a PCB board 10, a noise generator 20, a noise signal line 30, and a target signal line 40. The specific structure is described below:
[0030] The noise generator 20 is used to generate noise signals. For example, it can be a microcontroller unit (MCU) that simulates a noise source to generate noise signals. The MCU has a drive strength register, and the drive capability can be changed by adjusting different register values, thereby adjusting the intensity of the noise signal.
[0031] Noise signal line 30 refers to the signal transmission line that transmits noise signals. Target signal line 40 refers to the signal line used to transmit the signal under test.
[0032] The noise generator 20, noise signal line 30, and target signal line 40 are all located within the PCB board 10. The noise generator 20 is sufficient to generate a noise signal, thus eliminating the need for an external signal generator and a dedicated noise injection test board for noise signal injection.
[0033] The noise generator 20 is connected to the noise signal line 30, and the noise generator 20 is used to output a noise signal to the noise signal line 30; the target signal line 40 is used to transmit the signal to be tested; the noise signal is coupled with the signal to be tested, thereby achieving a better noise injection effect.
[0034] In this embodiment of the invention, the noise injection device includes a PCB board 10, a noise generator 20, a noise signal line 30, and a target signal line 40. The noise generator 20, noise signal line 30, and target signal line 40 are all disposed within the PCB board 10. The noise generator 20 is connected to the noise signal line 30 and is used to output a noise signal to the noise signal line 30. The target signal line 40 is used to transmit the signal to be tested. The noise signal is coupled to the signal to be tested. This noise injection device injects a noise signal using the noise generator 20 inside the PCB board 10, eliminating the need for an external signal generator and a dedicated noise injection test board. This design is simple to implement, highly efficient, and facilitates automated testing.
[0035] Furthermore, in some embodiments, such as this embodiment, the PCB board 10 has a multi-layer structure, and the noise signal line 30 and the target signal line 40 are respectively disposed in two different layers of the PCB board 10.
[0036] Specifically, the noise signal line 30 and the target signal line 40 are respectively located in two adjacent layers of the PCB board 10. By placing the noise signal line 30 and the target signal line 40 in two adjacent layers of the PCB board 10, the coupling effect between the noise signal and the signal under test can be improved, thereby achieving a better noise injection effect.
[0037] Furthermore, in some embodiments, such as this embodiment, the noise signal line 30 and the target signal line 40 are at least partially parallel to each other.
[0038] For example, the noise signal line 30 and the target signal line 40 are parallel to each other, which can improve the coupling effect between the noise signal and the signal under test, thereby achieving a better noise injection effect.
[0039] Furthermore, in some embodiments, such as this one, the coupling length of the noise signal line 30 and the target signal line 40 is 1 inch to 5 inches.
[0040] Specifically, the coupling length is the length of the parallel portions of the noise signal line 30 and the target signal line 40. Different signal coupling effects can be achieved by using different coupling lengths.
[0041] Furthermore, in some embodiments, such as this embodiment, the noise injection device further includes a grounding resistor R1, through which the noise signal line 30 is grounded.
[0042] Specifically, the noise signal line 30 is grounded through the grounding resistor R1, which enables better noise signal transmission.
[0043] Furthermore, in some embodiments, such as this embodiment, the noise injection device further includes a target device 60, which is disposed on the PCB board 10, and the target signal line 40 is connected to the target device 60.
[0044] Specifically, the target device 60 refers to the device that receives the signal to be measured, but this invention does not specifically limit this. The signal to be measured may specifically be the drive signal of the target device 60.
[0045] Furthermore, in some embodiments, such as this one, the noise injection device further includes a host 50, which is connected to the target signal line 40. Specifically, the host 50 is connected to the target signal line 40 via an interface and is used to output the signal to be tested to the signal line.
[0046] This utility model provides an anti-interference testing device, which includes a noise injection device as described in any of the above embodiments.
[0047] The technical effects of this utility model embodiment include:
[0048] In this invention, noise injection is achieved by simulating noise signals through MCU GPIO on the PCB board and coupling the signals under test on the PCB through interlayer coupling. The noise level is adjusted by configuring the drive strength and cycle of the GPIO, thereby verifying the noise filtering and anti-jitter functions of the SSD controller. This solution can be implemented by controlling the MCU through the original host manufacturer, which greatly improves the development and verification efficiency of the SSD controller and ensures the robustness of the SSD controller.
[0049] See Figure 2 , Figure 2 This is a test result diagram of an embodiment of this utility model. Figure 2 In the diagram, the red signal at the top represents the noise source emitted by the noise generator. The X-axis represents time, and the Y-axis represents signal strength, expressed in units of voltage.
[0050] The figure below shows the noise intensity of the useful signal coupling; where red represents the coupling intensity at 1 inch; blue represents the coupling intensity at 2 inches; pink represents the coupling intensity at 3 inches; light green represents the coupling intensity at 4 inches; and purple represents the coupling intensity at 5 inches. It can be seen that, based on... Figure 2The test results shown demonstrate that this invention has a good noise injection effect.
[0051] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.
[0052] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.
[0053] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.
[0054] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0055] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
[0056] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.
[0057] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Since these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
[0058] The above description describes specific embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the scope of protection of this utility model. Therefore, the scope of protection of this utility model should be determined by the scope of the claims.
Claims
1. A noise injection device, characterized in that, The noise injection device includes a PCB board, a noise generator, a noise signal line, and a target signal line; the noise generator, the noise signal line, and the target signal line are all disposed within the PCB board; the noise generator is connected to the noise signal line and is used to output a noise signal to the noise signal line; the target signal line is used to transmit the signal to be measured; wherein, the noise signal is coupled to the signal to be measured.
2. The noise injection device according to claim 1, characterized in that, The PCB board has a multi-layer structure, and the noise signal line and the target signal line are respectively located in two different layers of the PCB board.
3. The noise injection device according to claim 2, characterized in that, The noise signal line and the target signal line are respectively located in two adjacent layers of the PCB board.
4. The noise injection device according to claim 3, characterized in that, The noise signal line and the target signal line are at least partially parallel to each other.
5. The noise injection device according to claim 4, characterized in that, The coupling length between the noise signal line and the target signal line is 1 inch to 5 inches.
6. The noise injection device according to claim 1, characterized in that, The noise injection device also includes a grounding resistor, through which the noise signal line is grounded.
7. The noise injection device according to claim 1, characterized in that, The noise injection device also includes a target device, which is disposed on the PCB board, and the target signal line is connected to the target device.
8. The noise injection device according to claim 7, characterized in that, The noise injection device also includes a host computer, which is connected to the target signal line.
9. The noise injection device according to claim 1, characterized in that, The noise generator is an MCU.
10. An anti-interference testing device, characterized in that, The anti-interference testing equipment includes the noise injection device as described in any one of claims 1-9.