Circuit inspection equipment

Abstract

The utility model provides circuit inspection equipment. The circuit inspection equipment comprises a box body structure, an interface module, a signal receiving module, a first-class test module, a second-class test module and a power supply module, when equipment needs to be detected, firstly, a function to be detected is selected through the display panel, a signal is sent by the first-class test module or the second-class test module and transmitted to the equipment through the interface module via a signal channel provided by the signal receiving module, and the equipment performs corresponding operation after receiving the signal. At the moment, the first-class test module or the second-class test module collects signals of the equipment through the interface module and the signal receiving module, and then the equipment is detected.

Description

Technical Field

[0001] This utility model relates to the field of circuits, and more specifically, to a circuit inspection device. Background Technology

[0002] Currently, in existing technologies, the hardware and software of power inspection equipment are not sufficiently universal, standardized, or modular, and the equipment is too large and heavy, making it inconvenient. Utility Model Content

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related technologies.

[0004] Therefore, the first aspect of this utility model proposes a circuit inspection device.

[0005] In view of the above, the first aspect of this utility model provides a circuit inspection device, comprising: a housing structure, a cavity within the housing structure, a notch on the housing structure, and a display panel on the housing structure; an interface module, connected to the housing structure, located within the notch, and electrically connected to the device; a signal receiving module, electrically connected to the interface module, located within the cavity, and used to provide a signal path; a first-class test module, electrically connected to both the signal receiving module and the display panel, located within the cavity, and used to detect information data of a first-class device; a second-class test module, electrically connected to both the signal receiving module and the display panel, located within the cavity, and used to detect information data of a second-class device; and a power supply module, electrically connected to the signal receiving module, the first-class test module, and the second-class test module, and used to supply power.

[0006] In addition, the circuit testing device in the above-mentioned technical solution provided by this utility model may also have the following additional technical features:

[0007] Optionally, in some technical solutions of this utility model, the housing structure includes: a main frame, a cavity within the main frame, a first opening on a first side of the main frame, and a second opening on a second side of the main frame; a rear cover plate connected to the main frame and located at the first opening; multiple slots located within the cavity and connected to the main frame; and a button group connected to the main frame and located below the display panel, the button group being electrically connected to a Class I test module and to a Class II test module; wherein the display panel is connected to the main frame and located at the second opening.

[0008] In some technical solutions of this utility model, optionally, both the main frame and the slot are processed by milling.

[0009] Optionally, in some technical solutions of this utility model, the button group includes: a reset button, electrically connected to a type I detection module and a type II detection module; a type button, electrically connected to both the type I and type II detection modules, used to switch and select the type of equipment; a quantity button, electrically connected to both the type I and type II detection modules; and a confirmation button, electrically connected to both the type I and type II detection modules, used to initiate the detection of the equipment.

[0010] In some technical solutions of this utility model, optionally, a test module includes: an FPGA module, which is electrically connected to a signal receiving module and an FPGA module is electrically connected to a second encoder, and the FPGA module is used to collect information data of the first type of device; and a DSP module, which is electrically connected to the FPGA module, and the DSP module is used to control the FPGA module to send acquisition commands to the FPGA module.

[0011] In some technical solutions of this utility model, optionally, the power module includes: a power conversion module electrically connected to a signal receiving module, an electrical connection to a Class I test module, and an electrical connection to a Class II test module; an energy storage circuit electrically connected to the power conversion module; a peak voltage suppression circuit electrically connected to the energy storage circuit and the power conversion module; a reverse connection protection circuit electrically connected to the peak voltage suppression circuit; and a power failure detection circuit electrically connected to the reverse connection protection circuit and the interface module.

[0012] This utility model, through its "three-fold" design, improves the standardization, serialization, and modularity of the equipment's hardware and software, reduces the equipment's size and weight, and lowers maintenance costs. This significantly enhances the equipment's standardization, reliability, testability, maintainability, environmental adaptability, electromagnetic compatibility, and performance indicators, while also strengthening its versatility and scalability.

[0013] The equipment adopts an "FPGA+ARM" architecture, which technically achieves the integration, miniaturization, and modularization of hardware circuits, thereby improving the overall system integration. This significantly reduces the types and number of hardware modules used in the equipment.

[0014] The equipment chassis, while ensuring watertightness and air cooling, features a weight-reducing design using high-strength, low-density materials. Hollowed-out and slotted designs effectively reduce the overall weight of the chassis. A double-peak shielding strip creates a dual air and electromagnetic seal with the chassis, meeting the requirements of high-salt, high-humidity, and complex electromagnetic environments. The chassis surface is coated with a baking paint process, providing anti-mildew, moisture-proof, and salt spray-proof properties.

[0015] The equipment fully considers the requirements of generalization, and carries out generalization design in terms of system architecture, circuit design, interface design, software design and structural design to form a set of standardized interfaces to realize automated closed-loop testing of different equipment. At the same time, each unit module of the equipment is modularly designed to form standard modules, which can meet the usage requirements of different testing scenarios by freely combining and selecting internal modules.

[0016] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 A schematic diagram of a circuit inspection device according to an embodiment of the present invention is shown;

[0019] Figure 2 A schematic diagram showing the connection relationship of the modules according to an embodiment of the present invention is shown.

[0020] in, Figure 1 The correspondence between the reference numerals and component names in the attached drawings is as follows:

[0021] 1. Cabinet structure; 2. Display panel; 12. Main frame; 14. Button group. Detailed Implementation

[0022] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0023] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0024] The following reference Figures 1 to 2 This invention describes a circuit inspection device according to some embodiments of the present invention.

[0025] In one embodiment of this utility model, such as Figures 1 to 2 As shown, a circuit inspection device is proposed, comprising: a housing structure 1, with a cavity inside the housing structure 1, a notch on the housing structure 1, and a display panel 2 on the housing structure 1; an interface module, connected to the housing structure 1, located within the notch, and electrically connected to the device; a signal receiving module, electrically connected to the interface module, located within the cavity, and used to provide a signal path; a first-class test module, electrically connected to both the signal receiving module and the display panel 2, located within the cavity, and used to detect information data of the first-class device; a second-class test module, electrically connected to both the signal receiving module and the display panel 2, located within the cavity, and used to detect information data of the second-class device; and a power supply module, electrically connected to the signal receiving module, the first-class test module, and the second-class test module, and used to supply power.

[0026] This utility model provides a circuit testing device, including a housing structure 1, an interface module, a signal receiving module, a first-class test module, a second-class test module, and a power supply module.

[0027] When the device needs to be tested, the desired function is first selected through the display panel 2. The first or second test module sends a signal through the signal receiving module and then through the interface module to the device. After receiving the signal, the device performs the corresponding operation. At this time, the first or second test module collects the device's signal through the interface module and the signal receiving module, thereby completing the test on the device.

[0028] Specifically, the first type of equipment is connected via a main test cable and a universal adapter cable, while the second type of equipment is connected via a main test cable and a dedicated adapter cable.

[0029] Specifically, one type of test module is used to test the system of the device under test, and the other type of test module is used to test the system of the entire device.

[0030] Further, in some embodiments of this utility model, the housing structure 1 includes: a main frame 12, a cavity inside the main frame 12, a first opening on a first side of the main frame 12, and a second opening on a second side of the main frame 12; a rear cover plate, connected to the main frame 12, located at the first opening; multiple slots, located inside the cavity, and connected to the main frame 12; a button group 14, connected to the main frame 12, located below the display panel 2, electrically connected to a first-class test module, and electrically connected to a second-class test module; wherein, the display panel 2 is connected to the main frame 12, and located at the second opening.

[0031] In this embodiment, the housing structure 1 consists of a main frame 12, a rear cover plate, slots, and a button group 14. The slots can accommodate signal receiving modules, a type I test module, and a type II test module, thereby fixing the circuit and improving stability during testing. The button group 14 allows for test adjustments as needed, enhancing testing flexibility.

[0032] Specifically, the rear cover, cover plate, and display panel 2 are all connected to the main frame 12 by screws, and each contact surface is designed with conductive sealing strips, which can effectively prevent the corrosion of components by harsh environments such as dust, moisture, and salt spray, and ensure good electromagnetic compatibility. The entire chassis adopts a reinforced design, which can enable the equipment to withstand strong vibrations and impacts during use and transportation. It meets ergonomic requirements and is convenient for single-person handling.

[0033] Furthermore, in some embodiments of this utility model, both the main frame 12 and the slot are machined using a milling method.

[0034] In this embodiment, the main frame 12 and the slots are machined by integral milling. This method can ensure that the main frame 12 has good strength and machining consistency. At the same time, this method can ensure that the heat dissipation of the chassis surface and the mounting slot components of each circuit board are integrated into one, which greatly improves the heat conduction efficiency between the board and the chassis and is conducive to the natural heat dissipation of the chassis.

[0035] Furthermore, in some embodiments of this utility model, the button group 14 includes: a reset button, electrically connected to a type-one detection module and a type-two detection module; a type button, electrically connected to both the type-one and type-two detection modules, used to switch and select the type of device; a quantity button, electrically connected to both the type-one and type-two detection modules; and a confirmation button, electrically connected to both the type-one and type-two detection modules, used to initiate the detection of the device.

[0036] In this embodiment, the button group 14 includes a reset button, a type button, a quantity button, and a confirmation button. The reset button is used to reset the device, the type button is used to switch and select the device type, and the confirmation button is used to confirm the previous operation steps, thereby initiating device detection.

[0037] Specifically, display panel 2 is a ruggedized display screen, which is 12.6 inches with an optimal resolution of 1920x1080 and a 65K color serial port screen to achieve display function. Its brightness is 500 nits to ensure good visibility in strong light conditions.

[0038] Furthermore, in some embodiments of this utility model, a test module includes: an FPGA module electrically connected to a signal receiving module and an FPGA module electrically connected to a second encoder, the FPGA module being used to collect information data from the first type of device; and a DSP module electrically connected to the FPGA module, the DSP module being used to send acquisition commands to the FPGA module.

[0039] In this embodiment, the DSP module sends a data acquisition command to the FPGA module, thereby enabling the FPGA module to acquire information data from the first type of device.

[0040] Specifically, the DSP module is connected to the mounting bracket via a GJB289A interface chip to receive GJB289A bus data from the bracket; it communicates with a handheld terminal via a wireless module to achieve analog control and status monitoring of the mounted equipment; it is connected to a display screen via an SPI bus to display detection and simulation information in real time; the DSP module is connected to the FPGA via a local bus; the GPS module is connected to the signal interface module; two encoders are located on the upper panel of the housing structure 1; and a detection module can achieve self-calibration.

[0041] Furthermore, in some embodiments of this utility model, the power module includes: a power conversion module electrically connected to a signal receiving module, an electrical connection to a first-class test module, and an electrical connection to a second-class test module; an energy storage circuit electrically connected to the power conversion module; a peak voltage suppression circuit electrically connected to both the energy storage circuit and the power conversion module; a reverse connection protection circuit electrically connected to both the reverse connection protection circuit and the peak voltage suppression circuit; and a power failure detection circuit electrically connected to both the reverse connection protection circuit and the interface module.

[0042] In this embodiment, the power conversion module is designed with high reliability, miniaturization, and high efficiency in mind. The module primarily converts DC 28V power to the system's required DC 5V operating power. The input voltage is 9V–36V, and the output is a single DC 5V with a power output of 9W. The reverse connection protection circuit uses a Schottky diode to achieve reverse connection protection. A Schottky diode with a reverse withstand voltage of 100V and a conduction current of 3A is selected, meeting the design requirements. The spike voltage suppression circuit uses a transient voltage suppressor diode to suppress voltage spikes effectively. The energy storage circuit uses a large-capacity tantalum capacitor with a rated voltage of 63V and a capacity of 2600uF. During power failure, the energy storage circuit provides energy to maintain power supply for 50ms after the power failure and can save data before the power failure. The power-down detection circuit is used to monitor... The input voltage status is monitored. When the 28V input voltage drops, the power failure status can be quickly sent to the computer module. This part of the circuit consists of discrete components, mainly including comparators, transistors, optocouplers, resistors, and capacitors. The power supply module realizes the conversion from 28V input to isolated 5V output, with a wide input voltage range of 9V to 36V, a rated output power of 9W, fast response speed, good dynamic characteristics, high steady-state accuracy, and comprehensive protection functions. The voltage regulation rate is ±0.2%, the load regulation rate is ±0.5%, and the ripple is 50mV.

[0043] Specifically, the signal interface module provides a signal path for discrete signals and also includes a power conversion circuit that converts the input 28.5V power supply into a 5V operating power supply to power the integrated detection module. To reduce the size and weight of the device, the J599 connector and ECG quick-plug connector are directly soldered onto this printed circuit board. Meanwhile, to ensure signal quality, the GPS receiver module is also placed on this module.

[0044] The power conversion circuit of the signal interface module consists of an input filter circuit, an energy storage circuit, a DC / DC conversion circuit, and an output filter circuit. The energy storage circuit uses a single 2600μF / 63V capacitor to store energy, ensuring the power module meets instantaneous power outage requirements. A high-power resistor is connected in series with the capacitor charging path to limit the peak inrush current when the rated voltage is suddenly applied. The DC / DC conversion circuit has overcurrent and overheat protection functions.

[0045] The reserved GPS receiver module uses a high-sensitivity, low-power positioning and navigation module that supports BeiDou and GPS, which can achieve high-sensitivity detection of GPS and BeiDou signals.

[0046] In the claims, description, and accompanying drawings of this utility model, the term "plural" refers to two or more objects. Unless otherwise explicitly defined, the terms "upper," "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description process, and are not intended to indicate or imply that the device or element referred to must have the described specific orientation, or be constructed and operated in a specific orientation. Therefore, these descriptions should not be construed as limitations on this utility model. The terms "connect," "install," "fix," etc., should be interpreted broadly. For example, "connect" can be a fixed connection between multiple objects, a detachable connection between multiple objects, or an integral connection; it can be a direct connection between multiple objects or an indirect connection between multiple objects through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood based on the specific circumstances described above.

[0047] In the claims, description, and drawings of this utility model, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In the claims, description, and drawings of this utility model, the illustrative expressions of the above terms do not necessarily refer 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.

[0048] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A circuit testing device, characterized in that, include: A box structure, wherein the box structure has a cavity inside, the box structure has a notch, and the box structure has a display panel; An interface module is connected to the housing structure, the interface module is located within the notch, and the interface module is electrically connected to the equipment. A signal receiving module, which is electrically connected to the interface module, is located inside the cavity and is used to provide a signal path; A test module, which is electrically connected to the signal receiving module and the display panel, is located inside the cavity. The test module is used to detect information data of the first type of device. The second type of test module is electrically connected to the signal receiving module and the display panel. The second type of receiving module is located in the cavity. The second type of test module is used to detect the information data of the second type of device. The power supply module is electrically connected to the signal receiving module, the first type of test module, and the second type of test module. The power supply module is used to supply power.

2. The circuit inspection device according to claim 1, characterized in that, The enclosure structure includes: The main frame has the cavity inside it, a first opening on a first side of the main frame, and a second opening on a second side of the main frame. Rear cover plate, the rear cover plate is connected to the main frame, and the rear cover plate is located at the first opening; The slots are multiple in number, located within the cavity, and connected to the main frame; A button group, which is connected to the main frame and located below the display panel, is electrically connected to the first type of test module and the second type of test module. The display panel is connected to the main frame and is located at the second opening.

3. The circuit inspection device according to claim 2, characterized in that, Both the main frame and the slot are machined using milling methods.

4. The circuit inspection device according to claim 2, characterized in that, The button group includes: A reset button, which is electrically connected to the first type of detection module and the second type of detection module; A type button is electrically connected to the first type of detection module and the second type of detection module. The type button is used to switch and select the type of device. A quantity button, which is electrically connected to the first type of detection module and the second type of detection module; A confirmation button is electrically connected to both the first-type and second-type detection modules. The confirmation button is used to initiate the detection of the device.

5. The circuit inspection device according to claim 1, characterized in that, The type of test module includes: An FPGA module is electrically connected to the signal receiving module and to the second encoder. The FPGA module is used to collect information data from the first type of device. The DSP module is electrically connected to the FPGA module and is used to send acquisition commands to the FPGA module.

6. The circuit inspection device according to claim 1, characterized in that, The power module includes: A power conversion module, which is electrically connected to the signal receiving module, the power conversion module is electrically connected to the first type of test module, and the power conversion module is electrically connected to the second type of test module; An energy storage circuit, which is electrically connected to the power conversion module; A peak voltage suppression circuit is electrically connected to the energy storage circuit and to the power conversion module. A reverse connection protection circuit is electrically connected to the spike voltage suppression circuit. A power failure detection circuit is electrically connected to the reverse connection protection circuit and to the interface module.

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