CN211348458U

CN211348458U - Portable power module testing arrangement

Info

Publication number: CN211348458U
Application number: CN201921796808.XU
Authority: CN
Inventors: 谢望玉; 邱腾飞; 刘伟志; 宋术全; 姜龙飞; 王为介; 薛江; 史志富; 李文鹏; 何梦宇; 张若冰
Original assignee: China Academy of Railway Sciences Corp Ltd CARS; Locomotive and Car Research Institute of CARS; Beijing Zongheng Electromechanical Technology Co Ltd
Current assignee: China Academy of Railway Sciences Corp Ltd CARS; Locomotive and Car Research Institute of CARS; Beijing Zongheng Electromechanical Technology Co Ltd
Priority date: 2019-10-24
Filing date: 2019-10-24
Publication date: 2020-08-25
Anticipated expiration: 2029-10-24

Abstract

The application provides a portable power module testing arrangement, includes: the device comprises a box body, and a display assembly, a processor, an FPGA, a power distribution assembly and a current pulse amplifier which are arranged in the box body; the processor is respectively connected with the display assembly, the power distribution assembly and the display assembly and is connected with the current pulse amplifier through the FPGA; wherein the power distribution subassembly includes: the power supply filter consists of a common-mode filter inductor and a capacitor and is used for attenuating EMI energy conducted along a power line and inhibiting EMI radiation; the RS232 interface is used for expanding the processor through a first chip so as to transmit the current and voltage data output to the tested device to the processor; the FPGA receives test information of the tested equipment transmitted by the processor through the PCIE interface and transmits a level pulse signal to an electro-optical converter by a preset frequency pulse; and the photoelectric converter receives the pulse signal input of the tested equipment and transmits the pulse signal input to the FPGA.

Description

Portable power module testing arrangement

Technical Field

The application belongs to the technical field of electronic product testing and inspection, and particularly relates to a portable power module testing device.

Background

With the development of electronic technology, network technology and big data technology, the requirements for the function test, inspection and quality of electronic products in the industry become stricter and stricter. The inspection and test process of electronic products needs to have the characteristics of high stability, real-time performance and high automation degree. The tracking of quality information and historical data of electronic products also need to be traceable. Therefore, in order to reduce the labor cost and workload and improve the accuracy and reliability of the test of the tested product, it is necessary to realize the automation and networking of the test and the electronization of the test data.

In the railway field, a power module of a motor train unit is an important component of a traction and auxiliary converter, and has high quality requirements in development, production and operation. Compared with the test and the overhaul and maintenance of the power module in the production and running processes of the motor train unit, the conventional test scheme is a discrete measurement method, namely different functions need to be measured by using corresponding special equipment, such as an oscilloscope, a signal generator, a universal meter and the like. During the measurement process, the special test equipment needs to be independently powered, and meanwhile, the tested equipment also needs to be independently powered. The testing process is manually operated, a testing instrument and the tested equipment are connected together by using a testing cable, the testing conditions of the testing instrument are manually set, and meanwhile, the testing result needs to be manually recorded. For example, when the pulse distribution plate and the drive plate are subjected to maintenance and test, a pulse credit generator is needed to be used, different pulse modes are set and then manually output, an oscilloscope is used for observing the waveform of the feedback fault pulse, the instrument needs to be manually set in the whole process, the whole process is time-consuming and labor-consuming, operation is not easy, errors are prone to occur, and the measuring result is greatly influenced. When a plurality of interfaces are detected simultaneously, the workload is extremely large. And the test data is a paper file recorded manually, which is not beneficial to storage and inquiry of historical data.

SUMMERY OF THE UTILITY MODEL

The application provides a portable power module testing arrangement to at least, need supply power for special test equipment and by test equipment alone among the current test scheme of solution, and whole manual operation in the test process, the problem of inefficiency and easy mistake.

According to the description of the present application, there is provided a portable power module testing device, comprising: the device comprises a box body, and a display assembly, a processor, an FPGA, a power distribution assembly and a current pulse amplifier which are arranged in the box body;

the processor is respectively connected with the display assembly, the power distribution assembly and the display assembly and is connected with the current pulse amplifier through the FPGA; wherein the content of the first and second substances,

the power distribution assembly includes:

the power supply filter consists of a common-mode filter inductor and a capacitor and is used for attenuating EMI energy conducted along a power line and inhibiting EMI radiation;

the RS232 interface is connected with the processor and the power distribution assembly, and the processor is expanded through a first chip so as to transmit current and voltage data output to the tested equipment to the processor;

the FPGA receives the tested equipment test information transmitted by the processor through the PCIE interface, the FPGA transmits a level pulse signal to the electro-optical converter by a preset frequency pulse, and the photoelectric converter receives an optical signal of the tested equipment, converts the optical signal into an electric signal and transmits the electric signal to the FPGA;

the current pulse amplifier is provided with a level pulse input and output interface and a current pulse input and output interface, receives the pulse signal input of the tested equipment, converts the pulse signal and transmits the converted pulse signal to the FPGA;

and the processor tests the tested device according to the pulse signal input.

In one embodiment, the processor, the FPGA, the power distribution assembly and the current pulse amplifier are integrated on a computer board;

the processor is provided with a USB expansion interface and is connected with the rear panel through the USB expansion interface;

the processor also extends the memory device through the interface for storing the test data.

In one embodiment, the FPGA is externally connected with a DDS chip, and the DDS chip is used for generating a signal source, so that the accurate control of pulse output can be realized.

In one embodiment, the FPGA is coupled to an optical-to-electrical converter for converting optical signals to electrical signals.

In an embodiment, the current pulse amplifier further integrates a second chip, the second chip is connected with the FPGA, and the second chip is used for transforming and converting the electric signal and inputting the electric signal into the FPGA.

In one embodiment, the power distribution assembly is mounted against the side wall of the box body;

the power distribution assembly has integrated thereon a power supply and an EMI power filter.

In one embodiment, an input module is disposed in the box body, and the input module is connected to the display module and the processor respectively.

In an embodiment, a grounding pile is arranged outside the box body and used for grounding the testing device when the tested device is tested, so that the safety of the testing process is ensured.

In one embodiment, a side of the box is provided with a switchable swing door for servicing the testing device.

In one embodiment, the box body is further provided with a heat radiation fan, a power supply output end and a pulse interface.

The application provides a multi-functional testing arrangement, this device not only can realize carrying out convenient and automatic maintenance, measurement and test to power module to integrate the degree height and portable, adopted intelligent AC power supply design moreover, externally provided multiple power supply interface and need not external power supply.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a structure diagram of an open box of the test apparatus of the present application.

Fig. 2 is a schematic block diagram of an internal system structure of the testing apparatus of the present application.

FIG. 3 is a block diagram of a multi-function computer board of the test apparatus of the present application.

Fig. 4 is a circuit diagram of a DDS chip in an embodiment of the present application.

Fig. 5 is a schematic block diagram of a pulse input in the embodiment of the present application.

Fig. 6 is a schematic block diagram of a current mode pulse input/output in the embodiment of the present application.

Fig. 7 is a schematic block diagram of a power supply in a power distribution module according to an embodiment of the present application.

FIG. 8 is a front view of the test apparatus in the embodiment of the present application.

FIG. 9 is a diagram of the structure of the external back surface of the testing device in the embodiment of the present application.

Fig. 10 is a schematic block diagram of a pulse output in the embodiment of the present application.

Fig. 11 is a schematic diagram of a pulse signal output module in an embodiment of the present application.

Description of the symbols:

1. wrapping corners;

2. a buzzer;

3. a handle;

4. heat dissipation holes;

5. a revolving door;

6. a touch panel;

7. a keyboard;

8. function keys;

9. a display screen;

10. an AC power supply interface;

11. a pulse interface;

12. grounding piles;

13. a power supply output interface;

14. USB and Ethernet ports;

15. a heat radiation fan.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The test and the maintenance of the power module of the motor train unit in the production and operation processes usually adopt a discrete measurement scheme, corresponding special equipment is used for measuring different functions respectively, and the test equipment and the tested equipment need to be separately powered. The whole testing process adopts manual operation, the measuring time is long, mistakes are easy to make, and the testing data is paper files recorded manually, so that the paper files are not beneficial to storage and quick query. Based on the above problem, the present application provides a portable power module testing device, including: the device comprises a box body, and a display assembly, a processor, an FPGA, a power distribution assembly, a current pulse amplifier (OPA), a photoelectric converter and an electro-optical converter which are arranged in the box body;

the processor is respectively connected with the display assembly, the power distribution assembly and the display assembly and is connected with the current pulse amplifier through the FPGA; wherein, the distribution subassembly includes:

the FPGA receives test information of the tested equipment transmitted by the processor through the PCIE interface, the FPGA transmits a level pulse signal to the electro-optical converter by a preset frequency pulse, and the electro-optical converter receives an optical signal of the tested equipment, converts the optical signal into an electric signal and transmits the electric signal to the FPGA;

and the processor tests the tested device according to the pulse signal input.

And a power supply filter is arranged at the input end of the power distribution module.

In a specific embodiment, an EMI filtering function is added in the design of the CPCI power supply, and an EMI power supply filter is composed of a common-mode filtering inductor and a capacitor, so that electromagnetic interference among lines and between the lines and the ground can be effectively inhibited, EMI energy conducted along a power line can be attenuated, and meanwhile, the EMI power supply filter has a remarkable inhibiting effect on EMI radiation. The EMI filter and the power supply are integrally designed, so that the layout of the whole machine is optimized, and unreliable interconnection links in a case are reduced, thereby improving the reliability of the whole machine.

In one embodiment, the testing device integrates automated testing software that supports instrument parameter setting, testing procedures, testing parameter setting, test item selection, data real-time display, test curve real-time display, data real-time processing and storage, historical data query, management, user management, and other functions.

In one embodiment, the testing device adopts an ac power supply mode, converts the ac power into dc power or ac power which is output to the outside through the inside, and provides various power supply interfaces to the outside so as to directly provide required electric energy for the device to be tested (power module) without an external power supply. Meanwhile, the testing device provides various pulse input and output interfaces, the output mode and frequency can be configured by software, and automatic and intelligent measurement of the power module can be realized, for example, 6 paths of level signal pulse output, 6 paths of current signal pulse output, 6 paths of optical signal pulse output, 6 paths of level signal pulse input and 6 paths of optical signal pulse input can be adopted, and the application is not limited to this.

In one embodiment, as shown in fig. 1 and 2, the display assembly may employ a 14 "highlighting industrial display screen 9, capable of measuring test requirements in the field or under strong light. The test device provided by the application can also support single-item test of instruments, namely, only a certain type of power supply can be provided when the device to be tested is tested, and the single-item test can be carried out through the control of software.

In one embodiment, the processor (embedded computer module, see fig. 3), FPGA, power distribution components, and current pulse amplifier (OPA) are integrated on a computer board.

In one embodiment, as shown in fig. 2, there may be 3 parts on one substrate, respectively, a multifunctional computer board, a power distribution module (power distribution assembly), and an OPA for realizing the interconversion of level signals and current signals, and the three parts may be soldered on the substrate through an electronic chip integration process. The multifunctional computer board is correspondingly provided with a plurality of interfaces, one of which is connected with the power distribution module, and the other interface is connected with the OPA and used for providing pulse output and receiving feedback of the OPA. Meanwhile, the multifunctional computer board is also provided with 6 paths of light pulse output and input interfaces, 6 paths of electric port output and input interfaces, an RS232 interface, a USB interface, a network port, an indicator light interface, a power supply button interface and the like. The distribution module is integrated with an ARM single chip microcomputer STM32F103RBT6, voltage output and input interfaces are arranged on the distribution module, and hardware such as a current and voltage acquisition module and a power indicator lamp are integrated at the same time for realizing acquisition of externally output voltage and current, test data are transmitted to application software carried on a multifunctional computer board through an RS232 interface on the distribution module, and the test data are displayed on the application software in real time.

In one embodiment, the power distribution module is integrated with an ARM single chip microcomputer STM32F103RBT6, the power distribution module is provided with a voltage output interface and a voltage input interface, and is also integrated with hardware such as a current and voltage acquisition module and a power indicator lamp, and the power distribution module is used for acquiring voltage and current output externally, transmitting test data to application software carried on a multifunctional computer board through an RS232 interface on the power distribution module, and displaying the test data on the application software in real time.

In a specific embodiment, the multifunctional computer board is built by using an embedded I7 computer module, as shown in the schematic block diagram of fig. 3:

two USB2.0 interfaces and a network port are expanded in an embedded computer module (processor), and the network port is correspondingly connected with the network port on the substrate; the embedded computer module (processor) is connected with a 1TB electronic disk through the sata interface extension, and the electronic disk is used for storing data generated in the test process so as to facilitate the later tracking of the data and the reference of historical data; the processor is also provided with an LVDS display interface, and the processor is connected with a display component (display screen) through the display interface to complete the display function; the processor completes the function expansion of an RS232 interface through a SuPER IO chip W83627F (a first chip), and is connected with the power distribution module through the RS232 interface, so that the power distribution module can transmit data to the carried application software through the interface; the processor is also connected with the FPGA through a PCI-E interface so as to complete the function expansion of the pulse interface, and the processor transmits the test information to the FPGA through the PCI-E interface; the processor completes external level pulse output interface expansion through one 74ALVC164245 chip and completes external level pulse input interface expansion through the other 74ALVC164245 chip; the processor is also provided with an AFBR-1639Z electro-optical converter for realizing the function of optical pulse output interface expansion and an AFBR-2539Z electro-optical converter for realizing the function of optical pulse input interface expansion and realizing the interface expansion of current pulse input and output signals through an OPA.

In a specific embodiment, as shown in fig. 4, the DDS chip is an AD9851 model, the AD9851 is a high-integration DDS frequency synthesizer manufactured based on the DDS technology, and the DDS chip includes a programmable DDS system, a high-performance DAC, and a high-speed comparator inside the DDS frequency synthesizer, so that the DDS frequency synthesizer can realize the frequency synthesis and clock generation functions of all-digital programming control, and the DDS chip can be used as a reference signal source to realize 1Hz stepping. In a specific testing process, as shown in fig. 10, the processor transmits the test information to the FPGA through the PCI-E interface, the FPGA starts the DDS chip according to the test data in the received test information, the DDS chip generates a pulse to the FPGA after being started, the FPGA drives the 74ALVC164245 chip and the electro-optical converter AFBR-1639Z by using the pulse as a reference source to complete conversion between the level pulse signal and the electro-optical signal, and a signal schematic diagram of the DDS chip is shown in fig. 11.

In an embodiment, the FPGA receives test information of the device under test transmitted by the processor through the PCIE interface, the FPGA transmits the level pulse signal to the electrical-to-optical converter by using a preset frequency pulse, and the electrical-to-optical converter receives an optical signal of the device under test and converts the optical signal into an electrical signal to transmit the electrical signal to the FPGA.

In a specific embodiment, as shown in fig. 5, a schematic block diagram of the pulse input is shown, in which an optical-to-electrical converter AFBR-2539Z converts an optical signal into a 3.3V electrical signal, and accesses to an FPAG to enable the FPGA to collect the electrical signal, and a chip 74ALVC164245 on the current pulse amplifier converts the 5V electrical signal into a 3.3V electrical signal acceptable by the FPGA and enters the FPGA to enable the FPGA to sample the electrical signal. And the processor reads the sampling information of the FPGA in real time through the PCI-E interface and displays the sampling information in the loaded test software.

In a specific embodiment, a 6-path current type pulse input and pulse output principle of the test device is shown in fig. 6, a processor transmits test information to an FPGA through a PCI-E interface, the FPGA starts a DDS according to data in the test information, a DDS chip (a second chip) generates a frequency pulse to the FPGA, the FPGA takes the pulse as a reference source and transmits a level pulse signal to an OPA, and the OPA converts the level pulse signal into a current pulse signal through conversion of the pulse signal, so that output of the current type pulse signal is realized.

The OPA receives the input of an external current type pulse signal, converts the input into a voltage type pulse signal and transmits the voltage type pulse signal to the FPGA, the FPGA detects the pulse signal in real time and transmits the pulse signal to a computer through a PCIE interface, and computer test software displays waveform information in real time and stores data.

The distribution assembly is tightly attached to the side wall of the box body of the testing device, heat generated in the working process can be effectively dissipated through the case, and the situation that the heat is stored in the case to cause overhigh temperature in the case and generate faults of the testing device is prevented.

In one embodiment, the power supply in the power distribution assembly of the test apparatus is designed to have an input voltage of AC220V, 50HZ, and an output voltage of: the +12VDC, +110VDC and 5-26 VDC are output adjustably; the output power is not lower than 75W, and the schematic diagram of the power supply is shown in FIG. 7: the alternating current filter circuit filters input alternating current, electromagnetic interference between lines and between the lines and the ground is effectively inhibited, and then the alternating current filter circuit transforms voltage through the rectifier module and the voltage transformation module and outputs the transformed voltage.

In a specific embodiment, an EMI filtering function is added in the design of the CPCI power supply, and an EMI power supply filter is composed of a common-mode filtering inductor and a capacitor, so that electromagnetic interference among lines and between lines and the ground can be effectively inhibited, EMI energy conducted along a power line can be attenuated, and meanwhile, the EMI power supply filter has a remarkable inhibiting effect on EMI radiation. The EMI filter and the power supply are integrally designed, so that the layout of the whole machine is optimized, and unreliable interconnection links in a case are reduced, thereby improving the reliability of the whole machine.

When the power supply is selected, the power supply with high frequency, low loss and good shielding performance is selected, for example, a Vicor power supply module is selected when high voltage is converted into 12V voltage. The whole power supply has the advantages of high power density, small conduction and radiation noise, quick response, high conversion efficiency and the like.

In one embodiment, as shown in fig. 1 and 8, an input module is disposed in the box, and the input module is connected to the display module and the processor respectively.

In one embodiment, the housing of the testing device can be an aluminum alloy assembled housing, each component is machined from an aluminum alloy material, the housing is of a structure integrating the display and input components, and is provided with a handle 3 for carrying. The display module can adopt 14 cun high bright industrial display screen, and the input module can be keyboard, tangible board 6 and mouse etc. conveniently measure the operation of test, still possesses a function button 8 simultaneously for realize testing arrangement's the start-up power supply and open the start-stop operation function of external power supply.

In a specific embodiment, wrap angles 1 are arranged on the periphery of a box body of the testing device, so that the box body is protected; one side of the box body is provided with a handle 3 for convenient carrying

In one embodiment, as shown in fig. 9, a grounding peg 12 is provided on the outside of the case for grounding the testing device during testing of the device under test to ensure the safety of the testing process.

In a specific embodiment, 13 grounding piles 12 are arranged outside the box body and are used for grounding during testing, so that the safety during the testing process is ensured; meanwhile, the outer side of the box body is also provided with an alternating current power supply interface 10, a pulse input and output interface, a power supply output interface, a USB (universal serial bus) and gigabit Ethernet interface 14 and the like, the alternating current power supply input interface is used for supplying power to the whole testing device, the pulse input and output interface further comprises 6 paths of level pulse output and input, 6 paths of current signal pulse output, 6 paths of current type pulse feedback input and the like, and the power supply output interface 13 adopts DC (direct current) 110 and 5-26V adjustable output voltage.

In a specific embodiment, one side of the box body is provided with a revolving door, the inside of the device can be conveniently checked by opening the revolving door, the maintenance is convenient, the troubleshooting and the maintenance work can be carried out without disassembling the machine when the equipment breaks down, and meanwhile, the input and the output of the optical signal are also led out from the revolving door.

In an embodiment, the box body is further provided with a heat dissipation fan 15, a power supply output end and a pulse interface 11.

In one embodiment, the case is provided with heat dissipation holes 4 and a heat dissipation fan 15, and the heat dissipation fan 15 dissipates the temperature inside the testing device through the heat dissipation holes 4. Meanwhile, the testing device is also provided with an alarm device which can be a buzzer 2 and can give out alarm sound when the tested power module is abnormal.

In a specific embodiment of the present application in practical situations, the portable power module testing apparatus is a testing-type embedded computer device, and is used to implement the functions of power supply, drive control, data acquisition, data processing, communication, real-time curve display, data storage, and the like for a module to be tested. The testing device is of an integrated portable structure, all functional modules are integrated in a plurality of portable cases, external interface signals are led out from the left part of the case and a rear panel, and all signals are led out by adopting a high-reliability special connector.

The testing device mainly comprises the following modules:

a) testing the module box body:

the box adopts the aluminum alloy assembly box, and each subassembly is formed by the aluminum alloy material machine with adding, and the inside demonstration of adoption of box, keyboard 7 and mouse integrated structure to be furnished with handle 3, light in weight conveniently carries.

b) Multifunctional computer module (multifunctional computer board):

the multifunctional computer module is integrated in the shell of the testing device, the computer adopts an X86 framework, and functions of level pulse output, level pulse input signal acquisition, relay output interface (short circuit and disconnection of a designated pin in the control power module DB 25), communication, indicator light control, data storage and display and the like are integrated on a computer board.

The computer board integrates 6 paths of electric pulse signal output and 6 paths of electric pulse signal receiving; 6 paths of integrated optical pulse signals are output, 6 paths of optical pulse signals are received, and specific output can be flexibly configured through software.

The multifunctional computer module is a highly integrated and highly reliable multifunctional computer, and integrates analog quantity acquisition, pulse signal sampling, pulse signal output, power output, communication, display and storage. The embedded computer equipment in the module takes a COM-E computer as a core, adopts a high-integration design scheme, integrates different functional requirements on the same mainboard, expands each function through a PCIE bus, and realizes data interaction with each subfunction, thereby realizing high integration, miniaturization and no board card of the test computer, and providing the reliability and stability of the system.

c) A power supply module: the module mainly realizes three groups of power outputs:

a +12V power supply, power 75W, for powering the multifunction computer board.

The +110V output is used for outputting a direct current 110V power supply to the outside, and is not lower than 75W;

the adjustable power supply output adopts direct current 5V-26V adjustable output, and is 75W;

d) OPA module (OPA plate):

the OPA module is connected with the computer board, and is used for receiving 6 paths of electric pulse signals at the same time and converting the electric pulse signals into 6 paths of current pulse signals for output, the computer board is used for receiving the electric pulse signals fed back by the 6 paths of OPA boards at the same time, the pulse signals can be displayed on a software interface, and the specific path of output pulse can be flexibly configured according to the actual situation;

e) a display module:

the 14-inch display screen is used for displaying test information in real time;

f) software:

the testing device loads and installs a 732-bit operating system of the window and integrates automatic testing application software. The test application software can realize the functions of real-time display of output voltage and current, output pulse frequency control, output channel selection, real-time acquisition of input pulse, waveform display, fault diagnosis and the like.

The hardware configuration of the testing device, the main performance and configuration indexes of the testing device are shown in the following table 1:

TABLE 1 main Performance and configuration indexes of multifunctional portable tester

The environmental suitability of the test device is shown in table 2 below:

TABLE 2 environmental suitability

Serial number	Item	Index (I)
			1	Operating temperature	-10℃～45℃
2	Storage temperature	-20℃～55℃
			3	Relative humidity	≤95％

Table 2 above illustrates the environmental adaptability of the test apparatus, and the power adaptability thereof is shown in table 3:

TABLE 3 Power Adaptation

Serial number	Item	Index requirement	Remarks for note
				1	Power supply adaptability	AC220V, 50HZ
2	Power of power supply	≤200W

In the above description, for the hardware configuration and adaptability of the testing apparatus in an embodiment of the present application, the following description describes the software used in the testing apparatus:

the software carried by the testing device comprises system software and driving software, a Windows7 professional edition operating system is preinstalled in the multifunctional computer, the drivers such as a mainboard, a display card and a network interface are provided, and the customized testing software is provided, and the functions mainly comprise:

1) displaying the testing process in real time;

2) displaying the waveform of the input interface signal in real time, such as an input pulse waveform and the like;

3) setting the frequency of output pulses and displaying the output waveforms in real time, wherein the output waveforms are divided into a common mode and a development mode, the common mode can set corresponding modes according to the interface definition of a power module, wherein a channel 1 is complementary with a channel 2, a channel 3 is complementary with a channel 4, and a channel 5 is complementary with a channel 6. The development mode is that the wave form of the no-path channel can be edited arbitrarily, and the output of the arbitrary channel can be selected;

4) the 110V output power supply controls and outputs the real-time display of voltage, current value;

5) setting the output voltage and displaying the voltage and current of the 5-26V programmable power supply in real time;

6) and storing the data in real time.

The above is an introduction of software loaded in the test apparatus. Regarding the specific structural details of the testing device, in a specific embodiment, the side of the box body of the testing device is further provided with an alternating current input three-phase socket, a level pulse output aviation connector, a 110V power output, a 5V-26V adjustable power output connector, a heat dissipation fan 15, a USB interface, a network port, an RS232 and the like, wherein an optical signal interface is arranged inside the box revolving door 5, and the measurement can be realized by opening the revolving door 5.

The power module is integrated with an ARM single chip microcomputer STM32F103RBT6, voltage and current output externally are collected, data are transmitted to application software through an RS232 interface, and the data are displayed on the application software in real time.

The front panel is provided with an indicator lamp, a power supply button, and the like. The test equipment realizes function expansion through a highly reliable and highly integrated circuit interconnection mode, does not need board card plugging and unplugging, greatly reduces the system interconnection complexity and improves the reliability of the whole machine. And compatibility and interchangeability are fully considered in the design process of each module, and multifunctional flexible configuration of the system can be realized.

All outsourcing components and electronic matching parts forming the testing equipment adopt products above industrial level. In order to meet the requirements of good strength, light weight and small volume of equipment, the machining means and the cost performance ratio of products are fully considered on the premise of meeting the design requirements, and a hard aluminum alloy LY12-CZ plate and a steel plate of GB 13237-9110F are mainly selected as materials.

The box body is made of hard aluminum alloy, the hard aluminum alloy LY12-CZ is hard aluminum with high strength, the plasticity is medium in an annealing and new quenching state, the welding performance is good, the box body is mainly used for structural parts with high strength, the strength of the box body is close to that of steel, the mechanical performance of the box body is good, the tensile strength can reach 460N/mm & lt 2 & gt, the hardness HBS is 105, but the density of the box body is small, the box body is very suitable for being used in occasions with strict requirements on the weight of the parts, the cutting processing technological performance and the weldability of the box body are good, and the design requirements can be met.

The steel plate of GB 13237-9110F belongs to common manganese-containing steel, has the carbon content of 0.07-0.14, and belongs to low-carbon high-quality steel. Because of low carbon content, the alloy has low hardness, high plasticity and toughness, good forgeability and good welding performance. Therefore, the sheet metal has good processing property, is easy to be formed by stamping and welding, and meets the product requirements.

The test device provided by the application provides the following points for optimization design on the basis of combining the existing actual test operation:

1) reliability design

The test system adopts a mature technology, a simplified design, a fault-tolerant design, a redundancy design, a derating design, an aging screening and other effective measures for improving the reliability, thereby improving the reliability of the product.

2) Simplified design

The functions of the product are met by the least components and parts as far as possible, and the types, models and quantity of the components and raw materials are compressed and controlled to the maximum extent. Standard parts are preferred to improve interchangeability and standardization.

3) Fault tolerant, redundant and error tolerant design

The test system takes the following measures in terms of fault tolerance, redundancy and error prevention:

a) the power lines in the system adopt marks with different colors.

b) Printing line numbers and labels on all the connecting lines, and printing marks of all the units in the case;

c) different interfaces adopt different connectors to prevent misplug.

d) Derating design

The derating design means that the stress born by the components in use is lower than the rated value of the components so as to achieve the purposes of delaying the parameter degradation and improving the use reliability. The elements of different types are derated according to different application conditions, so that the reliability of the equipment can be greatly improved, but the derating is more and better, the derating is excessive, the number of the elements is possibly unnecessarily increased, the volume and the weight of the equipment can be increased instead, and the reliability is not good.

The derating method is different for different components, the derating method of the resistor is mainly to reduce the power ratio, the capacitor is mainly to reduce the working voltage, the derating method of the semiconductor is mainly to keep the working power consumption within the rated power consumption, the digital integrated circuit is derated through the ambient temperature and the electrical load, and the derating of the linear integrated circuit, the large-scale integrated circuit and the semiconductor memory is also realized mainly through reducing the ambient temperature.

Derating can be achieved in two ways: firstly, reduce components and parts application stress, secondly improve the working strength of components and parts. Selecting components with higher working strength is the most practical method.

4) Heat dissipation design

When an electronic device works, the output power usually only accounts for a part of the input power, and the power loss is generally dissipated in a heat energy mode. The heat dissipation design is to control the temperature of heat dissipation components of the electronic equipment and the temperature of the whole equipment or system, and aims to ensure that the working temperature of the components in the electronic equipment does not exceed the limit temperature of the components, so that the equipment can work stably and reliably under the preset environmental condition. The raw materials used in the manufacture of electronic devices have temperature limits beyond which physical properties change, the device fails to perform its intended function, and the device may fail after prolonged operation at the intended nominal temperature. Statistics show that the faults of the electronic components are closely related to the working temperature of the electronic components. The purpose of thermal design is to provide a low thermal resistance path from a heat source (electronic component or assembly) to a heat sink (final heat dissipation object) to ensure that the temperature of the component or device is within the allowable range of the reliability design, so as to achieve the purpose of high reliability design.

5) Design of environmental protection

The product failure is often related to the environment, and the environment protection design of the test system comprises: temperature protection design, three-proofing design for damp and heat resistance, smoke resistance and mould resistance, sand and dust prevention and antistatic design and the like.

When possessing above-mentioned 5 point optimal design, the testing arrangement that this application provided still has good maintainability and practicality:

in order to improve the maintainability of the testing device, the following measures are taken:

1) simplified design

In order to reduce the requirement of maintenance skills, reduce the guarantee resources of spare parts, tool equipment and the like, and reduce the variety of equipment as much as possible when the equipment in the device is tested.

2) Modular design

The key to serviceability is fault isolation time, disassembly time, replacement time, and bonding time. In order to reduce the fault isolation time, the modular design is also carried out while the fault diagnosis capability is considered to be improved in the design.

3) Error protection measures and identification marks

The connecting lines between the printed boards (bottom boards or base boards) of all the devices and the connecting cables of the printed boards and the chassis are printed with labels, so that wrong insertion is prevented. The printed board power supply adopts connectors of different models to prevent wrong insertion.

4) Safety in maintenance

The machine has no high voltage circuit inside, but needs to prevent electrostatic breakdown of devices on the printed board. When in maintenance, the static electricity of the human body should be released, and the equipment is reliably grounded.

5) Maintenance manual and maintenance tool

The test device is provided with an instruction book containing a maintenance manual, various faults and maintenance methods are described in detail in the maintenance manual, and universal tools such as a screwdriver, an electric soldering iron, tweezers and the like are used for maintaining the test device.

6) Reduce the requirements on the skills of maintenance personnel

Due to the fact that a detailed maintenance manual is provided, maintenance personnel can maintain most faults of the test system only through training, and the requirement for the skills of the maintenance personnel is lowered.

7) Simplified self-test and calibration process

The testing device adopts part of general testing instruments and calibration and self-checking modules, so that calibration and self-checking can be independently completed, a tested system is not depended on, and the calibration and self-checking processes are simplified.

In order to improve the environmental adaptability of the testing device, the testing device is designed to be electromagnetic compatible, and the purpose of the testing device is to reduce the capability of the device for resisting external electromagnetic interference of external electromagnetic interference enhancing equipment, so that the electronic equipment can normally work in a certain electromagnetic environment. In general, the main means of a magnetically compatible design is to cut off the transmission channel of interfering electromagnetic waves. The transmission modes of the interference electromagnetic wave in and out of the equipment are mainly three: radiation, conduction, and coupling. The electromagnetic compatibility design of the application ensures that the electronic equipment adopts measures of shielding, source suppression, grounding and the like aiming at the working frequency and power of a radio frequency signal and an anti-interference flat rate range on the basis of the conventional electromagnetic compatibility design, reduces the radiation emission intensity and enhances the anti-electromagnetic interference capability. In order to prevent the electromagnetic interference signals from being conducted and transmitted through the power line, the filter is arranged at the power inlet of the point-adding control combination, the electromagnetic interference signals transmitted through the power line are attenuated by the filter, the equipment is protected from being damaged, and meanwhile the electromagnetic interference signals generated by the equipment can be inhibited. The input and output terminals are isolated when the filter is installed to achieve a good shielding effect.

The testing device further adopts a grounding design, charges accumulated and stored on the case due to electrostatic induction can be released, the phenomenon that the charges are accumulated too much to form high voltage to cause equipment discharge to cause interference on the whole testing process is avoided, the design of the grounding structure provides necessary safety guarantee for operators of the equipment, meanwhile, electromagnetic noise is restrained, electromagnetic interference is prevented, and the working stability of the equipment is improved.

Specifically, in an embodiment of the present application, the grounding design is implemented by the following 5 points:

(1) a special grounding column is designed on the substrate and is used for being connected with a ground wire of the box body;

(2) designing a case body with good conductivity;

(3) when the substrate in the case is designed, copper-clad design is carried out on the periphery of the core component and the substrate, the core component and the substrate are connected with the case body in a low-impedance mode, and the case body is used as a reference plane;

(4) when the power module is designed, the high-voltage signal and the low-voltage signal are isolated, the isolation distance reaches the insulation level, the high-voltage wire part is designed with a warning mark, and low impedance is ensured between the reinforcing structural part and the safety ground;

(5) the substrate ensures the shortest path of a signal loop through large-area copper cladding or design of a ground plane, the switch matrix control panel and the point adding control combined control panel are four-layer boards, one layer is the ground plane, and therefore the requirement of a control signal on the ground plane is ensured.

Based on all the above embodiments, the portable testing device provided by the present application has the following advantages:

1. the whole device is light in weight and convenient to carry.

2. The power module and the test equipment do not need to be separately powered and can be directly powered.

3. The whole process can realize automatic measurement, and the manual participation degree is low.

4. All test data can be saved and is not easy to lose.

5. The test result does not need to be recorded manually, and the test device can automatically store the test result.

In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. The above description is only an example of the embodiments of the present disclosure, and is not intended to limit the embodiments of the present disclosure. Various modifications and variations to the embodiments described herein will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the embodiments of the present specification should be included in the scope of the claims of the embodiments of the present specification.

Claims

1. A portable power module testing device, comprising: the device comprises a box body, and a display assembly, a processor, an FPGA, a power distribution assembly, a current pulse amplifier, an electro-optical converter and an electro-optical converter which are arranged in the box body;

the processor is respectively connected with the display assembly, the power distribution assembly and the display assembly and is connected with the current pulse amplifier, the photoelectric converter and the electro-optical converter through the FPGA; wherein the content of the first and second substances,

the power distribution assembly includes:

the RS232 interface is connected with the processor and the power distribution assembly, and the processor is expanded through a first chip so as to transmit the current and voltage data output to the tested device to the processor;

and the processor tests the tested equipment according to the pulse signal input.

2. The test device of claim 1, wherein the processor, the FPGA, the power distribution component, and the current pulse amplifier are integrated on a computer board;

the processor is provided with a USB expansion interface, is connected with the rear panel of the box body through the USB expansion interface, and expands the storage equipment through the interface for storing test data.

3. The testing device of claim 2, wherein the FPGA is externally connected to a DDS chip, and the DDS chip is used for generating a signal source, so as to realize accurate control of pulse output.

4. The test device of claim 1, wherein the FPGA is coupled to an opto-electronic converter for converting optical signals to electrical signals.

5. The testing device of claim 1, wherein a second chip is further integrated in the current pulse amplifier, and the second chip is connected to the FPGA and used for transforming and converting an electrical signal and inputting the electrical signal into the FPGA.

6. The testing device of claim 1, wherein the power distribution assembly is mounted against the side wall of the housing;

a power supply and the EMI power filter are integrated on the power distribution assembly.

7. The testing device of claim 1, wherein an input module is disposed in the housing, and the input module is connected to the display module and the processor respectively.

8. The testing device of claim 1, wherein a grounding peg is disposed outside the box for grounding the testing device during testing the device under test to ensure safety of the testing process.

9. The testing device of claim 1, wherein a side of the housing is provided with an openable and closable swing door for servicing the testing device.

10. The testing device of claim 1, wherein the box body is further provided with a heat dissipation fan, a power supply output end and a pulse interface.