A single-board testing device for discrete and frequency quantities
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-07
- Publication Date
- 2026-08-14
AI Technical Summary
[0002]在进行离散量和频率量接口模块板卡的测试时，现有的单板测试设备大多仅考虑被测件设计验证阶段的测试功能，而在生产检验阶段的测试需要另外搭建测试平台，为适应设计生产时的单板测试需求，需要设计一套便携化的一体测试设备完成离散量和频率量接口模块板卡的测试
[0017]本设备为被测件提供了5个测试工位，可在设计的一体化的单板测试设备上完成对5个离散量/频率量模块的设计验证和生产检验的测试，完成对5个音视频模块的生产检验测试，系统结构简单，便携且实用。
Smart Images
Figure CN224636607U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of testing technology, specifically to a single-board testing device for discrete quantities and frequency quantities. Background Technology
[0002] When testing discrete and frequency quantity interface module boards, most existing single-board testing equipment only considers the testing functions during the design verification stage of the device under test. However, testing during the production inspection stage requires the construction of a separate testing platform. To meet the single-board testing needs during design and production, a portable integrated testing device needs to be designed to complete the testing of discrete and frequency quantity interface module boards. Utility Model Content
[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a single-board testing device for discrete quantities and frequency quantities.
[0004] The objective of this utility model is achieved through the following technical solution:
[0005] A discrete quantity and frequency quantity single-board test device includes a signal simulation device, a matrix conversion box, and a first interface adapter connected by a test cable. The signal simulation device includes a chassis and functional modules. The first interface adapter includes a signal adapter and a UUT interface bracket. The functional modules are located inside the chassis and include a PXI module assembly. The PXI module assembly includes a PXI controller, a frequency quantity output module, a multiplexer module, a discrete quantity output module, and a PAL output module mounted on a PXI backplane.
[0006] The PXI controller controls and manages the remaining functional modules through software. The frequency output module provides frequency and multiple fault signal outputs. The multiple-to-one switch module selects one output from multiple fault signals. The discrete output module provides a discrete excitation signal interface. The PAL output module provides 4-channel PAL signal resources.
[0007] It also includes a second interface adapter, which is used in the production and inspection stage of the discrete output module and the frequency output module, and can optionally connect to a signal simulation device to provide discrete and frequency excitation signals;
[0008] It also includes an audio / video module interface adapter, used in the production and inspection phase of the PAL output module, which can optionally connect to a signal simulation device to provide audio / video excitation signals.
[0009] Furthermore, the functional module also includes a power supply component, which includes a PXI power supply and a power conversion module. The PXI power supply provides AC power to the PXI backplane, and the power conversion module converts the AC power into DC power to power the frequency output module and the discrete quantity module.
[0010] Furthermore, the signal simulation device also includes a human-machine interface module located outside the chassis, including a display, mouse, and keyboard, which is connected to the PXI controller to provide a human-machine interface for the operator.
[0011] Furthermore, the signal simulation device also includes an interface module, including a programmable interface and a signal interface. The first discrete quantity adapter of the interface is connected to the PXI controller through the programmable interface to complete data interaction. The signal interface is connected to the frequency output module, the multiple-choice switch module, the discrete quantity output module and the PAL output module.
[0012] Furthermore, the frequency output module includes a first eight-channel parallel output module and a second eight-channel parallel output module. The first eight-channel parallel output module is used to output eight frequency signals or eight audio signals, and the second eight-channel parallel output module is used to output three types of fault excitation signals.
[0013] Furthermore, the discrete output module includes three 64-channel 4-state discrete modules for outputting 150 discrete excitation signals. The output 4-state discrete quantities include four types: 28V, 5V, low level, and open circuit output.
[0014] Furthermore, the PAL output module outputs four PAL video signals, which are then output after passing through a splitter.
[0015] Furthermore, the signal adapter of the first interface adapter also includes a data acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit, and a power supply control circuit, providing control and secondary voltage regulation functions for the UUT power supply.
[0016] The beneficial effects of this utility model are:
[0017] This equipment provides 5 test stations for the device under test, and can complete the design verification and production inspection of 5 discrete / frequency quantity modules on an integrated single-board test device, as well as the production inspection test of 5 audio and video modules. The system has a simple structure, is portable and practical. Attached Figure Description
[0018] Figure 1 A connection diagram of the test equipment;
[0019] Figure 2 Functional block diagram of signal simulation equipment;
[0020] Figure 3 This is a schematic diagram of the internal connections of a digital input / output module signal simulation device.
[0021] Figure 4This is a functional block diagram of the first interface adapter.
[0022] Figure 5 This is a functional block diagram of the second interface adapter. Detailed Implementation
[0023] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. 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.
[0024] See Figures 1-5 This utility model provides a technical solution:
[0025] A single-board testing device for discrete and frequency quantities, such as Figure 1 The system includes a signal simulation device, a matrix converter box, and a first interface adapter connected via a test cable. The signal simulation device includes a chassis and functional modules. The first interface adapter includes a signal adapter and a UUT interface bracket. The functional modules are located inside the chassis and include PXI module components. The PXI module components include a PXI controller mounted on a PXI backplane, a frequency output module, a multiplexer module, a discrete output module, and a PAL output module. The functional block diagram of the signal simulation device is shown below. Figure 2 As shown.
[0026] The PXI controller controls and manages the remaining functional modules through software. The frequency output module provides frequency and multiple fault signal outputs. The multiple-choice switch module selects one output from multiple fault signals. The discrete output module provides a discrete excitation signal interface. The PAL output module provides 4-channel PAL signal resources.
[0027] The PXI controller uses the PXI-2010 module, which mainly performs the following functions: a) controlling, managing, and scheduling the normal operation of each PXI module; b) providing a remote control interface for the interface adapter, including internal bus communication data interaction; and c) providing relevant control interfaces for the test process for operators.
[0028] In this embodiment, the functional module further includes a power supply component, which includes a PXI power supply and a power conversion module. The PXI power supply provides 220V AC power to the PXI backplane, and the power conversion module converts the AC power into DC power to power the frequency output module and the discrete quantity module. Specifically, the frequency output module is powered by ±60V DC power, and the discrete quantity module is powered by 28V DC power.
[0029] Furthermore, such as Figure 2 The signal simulation equipment also includes a human-machine interface module located outside the chassis, including a display, mouse and keyboard, which is connected to the PXI controller to provide a human-machine interface for operators.
[0030] Furthermore, such as Figure 2 The signal simulation device also includes an interface module, comprising a programmable interface and a signal interface. The first discrete quantity adapter of the interface is connected to the PXI controller through the programmable interface to complete data interaction. The signal interface is connected to the frequency output module, the multiple-choice switch module, the discrete quantity output module, and the PAL output module.
[0031] In this embodiment, the frequency output module includes a first eight-channel parallel output module and a second eight-channel parallel output module. The first eight-channel parallel output module is used to output eight frequency signals or eight audio signals, and the second eight-channel parallel output module is used to output three types of fault excitation signals. Among the three types of fault excitation signals, one output has a range of -49V to 49V, and the voltage is adjustable with an accuracy of less than ±0.2V; one output is a 400Hz sine wave signal with a peak-to-peak value of 56V; and one output is a 28V pulse signal, the pulse width of which can be set by software, with a pulse width of not less than 10ms and an error of less than ±2ms.
[0032] The discrete output module includes three 64-channel 4-state discrete modules for outputting 150 discrete excitation signals. The output discrete signals include the following four types: 28V, 5V, low level, and open circuit output.
[0033] The PAL output module outputs four PAL video signals, which are then output after passing through a splitter. The multiplexer module consists of 12 groups of 4:1 multiplexers, enabling signal selection from various signal output resources configured in the signal simulation equipment, and outputting one fault excitation signal.
[0034] The internal signal connection diagram of the signal simulation equipment is shown below. Figure 3 As shown in Table 1, the functions of each module in the PXI module component are summarized below:
[0035] Table 1 Summary of PXI Module Component Functions
[0036]
[0037]
[0038] In this embodiment, as Figure 4 The signal adapter of the first interface adapter shown also includes a data acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit, and a power supply control circuit, providing control and secondary voltage regulation functions for the UUT power supply.
[0039] It also includes a second interface adapter for the production and testing phases of the discrete output module and the frequency output module, which can optionally connect to signal simulation equipment to provide discrete and frequency excitation signals; and an audio / video module interface adapter for the production and testing phases of the PAL output module, which can optionally connect to signal simulation equipment to provide audio / video excitation signals. The internal functional block diagrams of the second interface adapter and the audio / video module interface adapter are similar as follows: Figure 5 As shown, all provide the following signal functions: power supply interface; test device internal bus test function; remote control function (LAN) of one interface adapter; conversion function for 150 discrete excitation signals; conversion function for 8 frequency excitation signals.
[0040] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.
Claims
1. A discrete quantity and frequency quantity single-board testing device, comprising a signal simulation device, a matrix converter box, and a first interface adapter connected via a test cable, wherein the signal simulation device includes a chassis and functional modules, the first interface adapter includes a signal adapter and a UUT interface bracket, the functional modules are located inside the chassis and include a PXI module assembly, the PXI module assembly includes a PXI controller mounted on a PXI backplane, the PXI controller controls and manages the remaining functional modules via software, characterized in that: It also includes a frequency output module, a multiplexer module, a discrete output module, and a PAL output module; The frequency output module provides frequency quantity and multiple fault signal outputs, the multiple-to-one switch module selects one output from multiple fault signals, the discrete output module provides a discrete excitation signal interface, and the PAL output module provides 4-channel PAL signal resources. It also includes a second interface adapter, which is used in the production and inspection stage of the discrete output module and the frequency output module, and can optionally connect to a signal simulation device to provide discrete and frequency excitation signals; It also includes an audio / video module interface adapter, used in the production and inspection phase of the PAL output module, which can optionally connect to a signal simulation device to provide audio / video excitation signals.
2. A discrete quantity and frequency device testing apparatus as recited in claim 1, wherein: The functional module also includes a power supply component, which includes a PXI power supply and a power conversion module. The PXI power supply provides AC power to the PXI backplane, and the power conversion module converts the AC power into DC power to power the frequency output module and the discrete quantity module.
3. A discrete quantity and frequency device testing apparatus as recited in claim 1, wherein: The signal simulation equipment also includes a human-machine interface module located outside the chassis, including a display, mouse and keyboard, which is connected to the PXI controller to provide a human-machine interface for operators.
4. The discrete quantity and frequency device testing apparatus of claim 1, wherein: The signal simulation device also includes an interface module, comprising a programmable interface and a signal interface. The first discrete quantity adapter of the interface is connected to the PXI controller through the programmable interface to complete data interaction. The signal interface is connected to the frequency output module, the multiple-choice switch module, the discrete quantity output module, and the PAL output module.
5. The discrete quantity and frequency device testing apparatus of claim 1, wherein: The frequency output module includes a first eight-channel parallel output module and a second eight-channel parallel output module. The first eight-channel parallel output module is used to output eight frequency signals or eight audio signals, and the second eight-channel parallel output module is used to output three types of fault excitation signals.
6. A discrete quantity and frequency device testing apparatus as recited in claim 1, wherein: The discrete output module includes three 64-channel 4-state discrete modules for outputting 150 discrete excitation signals. The output 4-state discrete quantities include four types: 28V, 5V, low level, and open circuit output.
7. The discrete quantity and frequency device test apparatus of claim 1, wherein: The PAL output module outputs four PAL video signals, which are then output after passing through a splitter.
8. The discrete quantity and frequency device test apparatus of claim 1, wherein: The signal adapter of the first interface adapter also includes a data acquisition circuit, a primary voltage and current conditioning circuit, a secondary voltage conditioning circuit, and a power supply control circuit, providing control and secondary voltage regulation functions for the UUT power supply.