CN116203928A

CN116203928A - Universal test system for carrier rocket power distribution controller

Info

Publication number: CN116203928A
Application number: CN202310175146.9A
Authority: CN
Inventors: 陈樑; 孙重希; 李晓龙; 徐建萍; 于砚
Original assignee: Shanghai Spaceflight Institute of TT&C and Telecommunication
Current assignee: Shanghai Spaceflight Institute of TT&C and Telecommunication
Priority date: 2023-02-28
Filing date: 2023-02-28
Publication date: 2023-06-02

Abstract

The invention provides a general test system for a carrier rocket power distribution controller, which comprises the following components: the system comprises a PXI backboard, a PXI multifunctional acquisition card, a PXI serial port card, a PXI controller, a general control and conditioning module, an AC/DC program-controlled power supply, a custom test cable and a power distribution controller; the PXI backboard is respectively in communication connection with the PXI multifunctional acquisition card, the PXI serial port card and the PXI controller through the PXI bus; the universal control and conditioning module distributes analog and digital channels of the PXI multifunctional acquisition card and conditions signals, and universal test software loaded in the PXI controller configures and defines software digital controls, state controls and control instructions according to the signal channels of the customized test cable carding to complete universal test flow of different types of distribution controllers. All test requirements of various power distribution controllers of the carrier rocket can be met, the design cost is reduced, and the utilization rate of a test system is improved.

Description

Universal test system for carrier rocket power distribution controller

Technical Field

The invention relates to the technical field of measurement and control, in particular to a universal test system for a power distribution controller of a carrier rocket.

Background

The carrier rocket power distribution controller is used for completing power supply and distribution control of a whole rocket, automatic protection and protection of a whole rocket initiating explosive device, receiving a power distribution control instruction sent by the ground, and outputting power supply and power conversion instructions to the power distributor; receiving instruction control, initiating explosive device protection and unlocking instructions sent by the ground, and finishing initiating explosive device protection and unlocking functions; and sampling state quantity and analog quantity output by the distributor, temperature signals in the lithium battery, and monitoring information such as a solution control state, an initiating explosive device protection state, a secondary power supply voltage, a working state and the like in the single machine.

The test requirements of the carrier rocket power distribution controller comprise analog quantity collection, state quantity collection, contact signal collection, voltage output, ground signal output, contact signal output, analog temperature sensor output, 422 serial port communication and the like, and the test requirements of the power distribution controllers of different types are different in the number of corresponding input and output channels and different in 422 communication protocols.

In general, different test systems need to be custom designed for different power distribution controllers, and both hardware and software need to be redeveloped, which increases design cost, lengthens development period, and is unfavorable for the universality and reusability of the test systems.

Disclosure of Invention

In view of the shortcomings in the prior art, it is an object of the present invention to provide a generic test system for a launch vehicle power distribution controller.

In a first aspect, embodiments of the present application provide a universal test system for a launch vehicle power distribution controller, comprising: PXI (PCI extensions for Instrumentation) backboard for PCI expansion facing instrument system, PXI multifunctional acquisition card, PXI serial port card, PXI controller, universal control and conditioning module, AC/DC program-controlled power supply, custom test cable, and power distribution controller; the PXI backboard is respectively in communication connection with the PXI multifunctional acquisition card, the PXI serial port card and the PXI controller through the PXI bus; wherein:

the PXI multifunctional acquisition card is in communication connection with the universal control and conditioning module and is used for acquiring and outputting analog and digital signals;

the PXI serial port card is in communication connection with the customized test cable and is used for carrying out 422 serial port communication with the power distribution controller;

the AC/DC programmable power supply is used for providing electric energy for the general control and conditioning module and the power distribution controller;

the general control and conditioning module is used for distributing and conditioning the analog and digital channels of the PXI multifunctional acquisition card so that the input and output signals meet the test requirements of the power distribution controller;

The customized test cable is used for re-carding various signal channels of different power distribution controllers and is connected to the universal control and conditioning module according to the universal requirement;

and the PXI controller is loaded with generalized test software for configuring and defining software digital controls, state controls and control instructions according to the signal channels of the customized test cable carding to finish generalized test flows of different types of distribution controllers.

Optionally, the universal control and conditioning module has a controller for:

distributing analog channels and digital channels in one port of the PXI multifunctional acquisition card, and combing the input voltage of an AC/DC programmable power supply; the method comprises the steps of carrying out 16 paths of analog signal acquisition, 8 paths of control signal output, 8 paths of state signal acquisition, 8 paths of analog temperature sensor output and 2 paths of analog signal output through corresponding signal conditioning circuits, and integrating all channel signals and voltage signals into one connector; wherein:

the analog and digital channels in one port of the PXI multifunctional acquisition card include: 16 AI channels, 24 DIO channels and 2 AO channels;

the 16-channel analog signal comprises: 3 paths of isolated voltage signals, 1 path of isolated current signals, 6 paths of voltage division common ground signals and 6 paths of direct common ground signals.

Optionally, the custom test cable is specifically configured to:

the attribute contact point which needs to send the control signal is connected to one end contact point of the relay of the universal control and conditioning module in a short way, and the contact point which receives the control signal of the power distribution controller is connected to the other end contact point of the relay of the universal control and conditioning module; when the contact is tested, one end of the contact is connected to the power supply voltage output by the AC/DC programmable power supply, and the other end of the contact is connected to an AI channel or a DI channel; wherein the attribute junction comprises: a power supply voltage signal and a ground signal.

Optionally, the generalized test software in the PXI controller is specifically configured to:

the numerical parameters, the state parameters, the delay parameters, the control instructions, the test flow and the test report form can be configured; wherein:

the numerical parameters display parameter names according to configuration, corresponding channel data are read, actual values are converted and displayed through a conversion formula, and whether the data are in a normal range is judged according to the current criterion;

the state parameters read the corresponding channel states or data according to the configuration display parameter names, display the on-off states according to the set colors, and judge whether the states are normal according to the current criteria;

The delay parameter reads the data of the starting channel according to the configuration display parameter name, judges whether the set starting condition is met, starts timing after the starting condition is met, reads the data of the stopping channel, judges whether the set stopping condition is met, stops timing after the stopping condition is met, and judges whether the delay is out of tolerance according to the set delay range;

the control instruction displays the instruction name according to configuration, executes corresponding operation according to the set instruction type, instruction channel and instruction parameters, updates each control criterion according to the set instruction criterion, and judges whether the instruction execution result is normal or not;

the test flow displays flow names according to configuration, sequentially executes set instructions and waits for set delay time;

and waiting for the execution of the configured trigger instruction of the test report, collecting the set related variable data, and sequentially filling the collected data into the test report according to the set row and column positions when the report is generated.

Optionally, the AC/DC programmable power supply is used for outputting +5V, +15V and 23-39V power supply voltage.

Compared with the prior art, the invention has the following beneficial effects:

the universal test system for the power distribution controller of the carrier rocket can meet the requirement of universal test of various power distribution controllers of the carrier rocket in the prior art, only needs to configure universal test software, and is matched with a special test cable. In addition, the system in the application has higher universality, can meet the test of most carrier rocket control single machines, and also has certain referential property for test systems of other products. The system has good expansibility, and when the test channel is insufficient, the number of the multifunctional acquisition card and the universal control and conditioning module can be increased; when the serial port channel is insufficient, the number of PXI serial port cards can be increased, and the new test requirements can be met without greatly adjusting the framework of hardware and software.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art. Other features, objects and advantages of the present invention will become more apparent upon reading of the detailed description of non-limiting embodiments, given with reference to the accompanying drawings in which:

FIG. 1 is a schematic diagram of a generic test system for a launch vehicle power distribution controller according to an embodiment of the present application;

FIG. 2 is a diagram of a PXI multifunctional acquisition card interface in an embodiment of the present application;

FIG. 3 is a block diagram of a general control and conditioning module according to one embodiment of the present application;

FIG. 4 is a diagram of a numerical parameter setting interface of the universal test software according to an embodiment of the present application;

FIG. 5 is a schematic diagram of a status parameter setting interface of the universal test software according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a delay parameter setting interface of the universal test software according to an embodiment of the present application;

FIG. 7 is a schematic diagram of a control instruction setup interface of the universal test software according to an embodiment of the present application;

FIG. 8 is a schematic diagram of a test flow setup interface of the universal test software according to an embodiment of the present application;

FIG. 9 is a diagram of a report parameter setup interface of the universal test software according to an embodiment of the present application.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of 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 apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, are intended to be within the scope of the present application.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

The terms "first," "second," "third," "fourth" and the like in the description and in the claims and in the above drawings, if any, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the invention described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The following describes the technical scheme of the present invention and how the technical scheme of the present application solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments.

Some embodiments of the present application are described in detail below with reference to the accompanying drawings. The following embodiments and features of the embodiments may be combined with each other without conflict.

The embodiment of the application provides a general test system for a carrier rocket power distribution controller, which comprises the following components: the system comprises a PXI backboard, a PXI multifunctional acquisition card, a PXI serial port card, a PXI controller, a general control and conditioning module, an AC/DC program-controlled power supply, a custom test cable and a power distribution controller; the PXI backboard is respectively in communication connection with the PXI multifunctional acquisition card, the PXI serial port card and the PXI controller through the PXI bus; wherein: the PXI multifunctional acquisition card is in communication connection with the universal control and conditioning module and is used for acquiring and outputting analog and digital signals; the PXI serial port card is in communication connection with the customized test cable and is used for 422 serial port communication with the power distribution controller; the AC/DC programmable power supply is used for providing electric energy for the universal control and conditioning module and the power distribution controller; the universal control and conditioning module is used for distributing and conditioning the analog and digital channels of the PXI multifunctional acquisition card so that the input and output signals meet the test requirements of the power distribution controller; the customized test cable is used for re-carding various signal channels of different power distribution controllers and is connected to the universal control and conditioning module according to the universal requirement; the PXI controller is loaded with generalized test software for configuring and defining software digital control, state control and control instruction according to the signal channel of the customized test cable carding, and completing the generalized test flow of different types of distribution controllers.

Exemplary, a universal control and conditioning module having a controller for: distributing analog and digital channels in one port of the PXI multifunctional acquisition card, and carding the input voltage of the AC/DC programmable power supply; the method comprises the steps of carrying out 16 paths of analog signal acquisition, 8 paths of control signal output, 8 paths of state signal acquisition, 8 paths of analog temperature sensor output and 2 paths of analog signal output through corresponding signal conditioning circuits, and integrating all channel signals and voltage signals into one connector; wherein: the analog and digital channels in one port of a PXI multifunction acquisition card include: 16 AI channels, 24 DIO channels and 2 AO channels; the 16-channel analog signal includes: 3 paths of isolated voltage signals, 1 path of isolated current signals, 6 paths of voltage division common ground signals and 6 paths of direct common ground signals.

In the embodiment, a set of mature PXI computer modules are configured to serve as a hardware platform of a universal test system and serve as a running carrier of universal test software, and control and monitoring with other modules are realized through a PXI bus; two general PXI multifunctional acquisition cards are configured, each multifunctional acquisition card is provided with 32 paths of AI,48 paths of DIO and 4 paths of AO, and acquisition and output of analog and digital signals can be realized; a universal PXI serial port card is configured and comprises 4 paths of asynchronous 422 serial ports, so that 422 serial port communication with a power distribution controller can be realized; an AC/DC programmable power supply is configured, and can output power supply voltages of +5V, +15V, V1-V4 and the like to supply power to the universal control and conditioning module and the power distribution controller, wherein the voltages V1-V4 generally comprise 23-39V power supply voltages, and other voltages are configured according to the test requirements of the power distribution controller; the universal control and conditioning module is designed to reasonably allocate and condition analog and digital channels of the PXI multifunctional acquisition card, and one universal control and conditioning module is in butt joint with one interface of the PXI multifunctional acquisition card, and comprises 16 paths of AI,24 paths of DIO and 2 paths of AO, and 4 universal control and conditioning modules are configured in total.

The 16-path AI of one port of the multifunctional acquisition card is divided into 2 types:

1) AI0, AI2, AI3 are isolated voltage acquisition channels; AI1 is an isolated current collection channel, and the current path is the current input through AI0 and output from port COM0 through sampling resistor (0.1Ω) controlled by energizing relay K0.

2) AI 4-AI 15 are the common ground acquisition channel, wherein AI 4-AI 9 do partial pressure processing, the partial pressure coefficient is generally 8.5, AI 10-AI 15 do not do partial pressure processing, directly get into the acquisition channel.

The 24-path DIO of one port of the multifunctional acquisition card is divided into 3 types:

1) P0.0-P0.7 are used as control signals to be output, the control signals are output through a Darlington tube driving relay, wherein P0.0 drives an electromagnetic relay, and when the relay is closed, voltage input from AI0 is output and is output through COM 0; P0.1-P0.7 drive solid relay, when the relay is closed, the signal is from CH end to COM end.

2) P2.0-P2.7 are used as state signal input, input signals are input into corresponding digital channels after being isolated by an optical coupler, and the digital channels are input for pull-up processing.

3) P1.0-P1.7 are used as analog temperature sensor output, and 3 resistors connected in series are switched through 2 groups of relays, so that 4 resistance output is realized.

For example, the three resistances connected in series are respectively R1, R2, and R3, and when the

relays

1 and 2 are both turned off, the output resistance is r1+r2+r3, corresponding to the temperature T0; when the relay 1 is closed and the relay 2 is opened, the output resistance is R1+R3, and the corresponding temperature T1; when the relay 1 is disconnected and the relay 2 is closed, the output resistance is R1+R2, and the corresponding temperature T2; when both

relays

1, 2 are closed, the output resistance is R1, corresponding to temperature T3.

In this embodiment, 2 paths of AOs of one port of the multifunctional acquisition card are not conditioned, and +5v and +15 of the input AC/DC programmable power supply are used for supplying power to various chips of the module, and are connected to an external output interface together with other power supply voltages V1-V4 for a user to use.

Exemplary, custom test cables, particularly for: the attribute contact point which needs to send the control signal is connected to one end contact point of the relay of the general control and conditioning module in a short way, and the contact point of the power distribution controller which receives the control signal is connected to the other end contact point of the relay of the general control and conditioning module; when the contact is tested, one end of the contact is connected to the power supply voltage output by the AC/DC programmable power supply, and the other end of the contact is connected to the AI channel or the DI channel; wherein, the attribute contact includes: a power supply voltage signal and a ground signal.

In this embodiment, a set of special test cables is designed for different types of power distribution controllers, and various signal channels of the power distribution controllers are re-carded and connected to a universal control and conditioning module according to universal requirements. Shorting the attribute contact point needing to send control signals, such as power supply voltage, ground signals and the like, to one end contact point of a relay of the universal control and conditioning module, and connecting the contact point of the power distribution controller receiving the control signals to the other end contact point of the relay of the universal control and conditioning module; when the contact is tested, one end of the contact is connected with the power supply voltage output by the AC/DC programmable power supply, and the other end of the contact is connected with the AI channel or the DI channel.

Exemplary, generalized test software in a PXI controller is specifically configured to: the numerical parameters, the state parameters, the delay parameters, the control instructions, the test flow and the test report form can be configured; wherein: the numerical parameters display parameter names according to configuration, corresponding channel data are read, actual values are converted and displayed through a conversion formula, and whether the data are in a normal range is judged according to the current criterion; the state parameters read the corresponding channel states or data according to the configuration display parameter names, display the on-off states according to the set colors, and judge whether the states are normal according to the current criteria; the delay parameter reads the data of the starting channel according to the configuration display parameter name, judges whether the set starting condition is met, starts timing after the starting condition is met, reads the data of the stopping channel, judges whether the set stopping condition is met, stops timing after the stopping condition is met, and judges whether delay is out of tolerance according to the set delay range; the control instruction displays the instruction name according to configuration, executes corresponding operation according to the set instruction type, instruction channel and instruction parameters, updates each control criterion according to the set instruction criterion, and judges whether the instruction execution result is normal or not; the test flow displays flow names according to configuration, sequentially executes the set instructions and waits for the set delay time; the test report waits for the execution of the configured trigger instruction, the set related variable data is collected, and when the report is generated, the collected data is sequentially filled into the test report according to the set row and column positions.

In the embodiment, a set of generalized test software is developed to perform personalized configuration on numerical parameters, state parameters, delay parameters, control instructions, test flows and test reports in the software, so that generalized test of a power distribution controller is realized:

the numerical parameters are respectively provided with a sampling rate, a parameter name, a channel number, a conversion formula, display precision, upper and lower limits of an initial criterion and an enabling state. The generalized test software collects analog data according to the set sampling rate and the enabled channel number; according to the starting state, displaying the numerical parameter name, reading the corresponding channel data, displaying the actual value according to the display precision through conversion of a conversion formula, and judging whether the data is in a normal range according to an initial criterion;

the status parameters set parameter names, channel numbers, upper and lower opening limits, colors of the lights turned off (false)/on (true), initial status (as an initial criterion of the parameters), and enabled status, respectively. When the channel number is the analog input channel, the upper limit and the lower limit are opened effectively, and when the analog input voltage is within the upper limit and the lower limit of the opening, the indicator lamp is on (true), otherwise, the indicator lamp is off (false); when the channel number is a digital input channel, the upper limit and the lower limit are invalid, and the state of the indicator light is consistent with the state of the digital input channel. The generalized test software displays the state parameter name according to the starting state, reads the corresponding channel state or data, displays the on-state or off-state according to the set color, and judges whether the state parameter is normal according to the initial criterion;

The delay parameters are respectively provided with a delay name, a start channel number, a start upper limit and a start lower limit, a start continuous point and a start jump variable, a stop channel number, a stop upper limit and a stop lower limit, a stop continuous point and a stop jump variable, a delay upper limit and a delay lower limit, a correction value, display precision, a power supply upper limit and a power supply lower limit and an enabling state.

When the starting/stopping channel number is an analog input channel, if the analog input voltage of the channel is in the starting/stopping upper and lower limit intervals and the number of the set points is continuously (in ms), the variation before and after the number of the set points is continuously greater than the starting/stopping jump variable, and when the current power supply voltage is in the power supply upper and lower limit intervals, starting/stopping timing is performed; when the start/stop channel number is the digital input channel, the maximum value of start/stop is invalid, the start/stop is shown as NaN, when the minimum value of start/stop is 1, the start/stop timing is performed when the digital input state is true, when the minimum value of start/stop is 0, the start/stop timing is performed when the digital input state is false.

The generalized test software displays the name of the delay parameter according to the starting state, reads the data of the starting channel to judge whether the starting condition is met, starts timing after the starting condition is met, reads the data of the stopping channel to judge whether the stopping condition is met, stops timing after the stopping condition is met, displays according to the display precision after correction according to the correction value, and judges whether the delay exceeds the tolerance according to the delay range.

The control instruction sets an instruction name, an instruction type, an instruction channel, an instruction parameter and an instruction criterion respectively. Instruction types can be classified into level, pulse, reset, voltage regulation, wait, serial, etc.

When the instruction type is the level, the instruction channel is a digital output channel of the multifunctional acquisition card, the instruction parameter is greater than 1 to output high level, and the instruction parameter is 0 to output low level;

when the instruction type is pulse, the instruction channel is a digital output channel of the multifunctional acquisition card, the instruction parameter value is pulse width, the unit ms, the positive value is positive pulse, and the negative value is negative pulse;

when the instruction type is reset, resetting all digital output channels of the multifunctional acquisition card;

when the instruction type is voltage regulation, the instruction channel is an analog output channel of the multifunctional acquisition card, and the instruction parameter is target voltage in V;

when the instruction type is serial port, the instruction channel is serial port card serial port number, the instruction parameter is invalid, and the generalized test software queries in a serial port instruction list according to the instruction name;

when the instruction type is waiting, the instruction channel and the instruction parameters are invalid, and the waiting instruction is only used for updating the criteria.

The generalized test software displays the instruction name according to configuration, executes corresponding operation according to the set instruction type, instruction channel and instruction parameters, updates each control criterion according to the set instruction criterion, and judges whether the instruction execution result is normal or not;

The test flows are respectively provided with flow names, control instructions are selected from the control instruction list to be ordered according to the test flows, and reasonable delay time is set for units s. The generalized test software displays the flow names according to the configuration, starts testing after selecting the corresponding test flow, sequentially executes control instructions in the flow, and waits for the set delay time;

the test report sets the number of parameters, the names of the parameters, the related variables, the rows, the columns, the trigger instruction, the upper/lower power limits and the waiting time (in ms), respectively. The parameter number refers to the number of stored parameters when the settings are stored, and is set to be equal to the number of parameters set by a user, otherwise, redundant settings are not stored. The generalized test software monitors each report parameter according to configuration, and when the power supply voltage is in an upper/lower limit interval and a trigger instruction is executed, the current value of the related variable is stored after waiting for a set time; and when the report is generated, filling the corresponding position of the format report according to the row and column information.

Referring to FIG. 1, in one embodiment, a universal test system for a launch vehicle power distribution controller includes a PXI computer module, a PXI multifunction capture card, a PXI serial port card, an AC/DC programmable power supply, a universal control and conditioning module, a dedicated test cable, and universal test software.

The PXI computer module adopts a 4U 20-slot PXI chassis, an 8-slot PXI backboard and a PXI controller (corei 5,8G internal memory, 1T solid state disk), so that the reliable installation of a standard module and a universal module is ensured, and the smooth operation of universal test software is ensured;

the PXI multifunctional acquisition card adopts two PXI-6229 of NI company, has 16bit resolution and 32 paths of AI channels; 250kHz maximum sampling frequency; 4-way AO channel; 833kHz highest refresh rate; 48 paths of TTL/CMOS digital quantity I/O ensure the analog acquisition precision, the quantity of analog and digital sampling channels and control channels, and an interface is shown in figure 2;

the PXI serial port card adopts PXI-8433/4 of NI company, has 4 communication ports, the highest transmission rate is 3000 kbit/s, buffer 128Bytes, ensure the reliable communication with the interface of the distribution controller 422, the attribute contact of 4 serial ports of the serial port card is connected to the rear panel of the universal test system, the type of the connector is J14A-38ZKB;

the AC/DC programmable power supply adopts RV-Z20513C and 220V input of Luoyang Dacron, and has multi-path power supply outputs of +5VDC, +15VDC, 23V-39 VDC and the like, and the voltage stability is that: load stability less than or equal to 0.5 percent: ripple is less than or equal to 1 percent: vp-p is less than or equal to 50mV, so that stable and reliable power supply to the universal control and conditioning module and the power distribution controller is ensured;

4 general control and conditioning modules are configured, as shown in fig. 3, each general control and conditioning module comprises three interfaces from X1 to X3:

the interface X1 is matched with an NI acquisition card interface, adopts a VHDCI-68 socket, can be directly connected with an acquisition card through a standard 68-core cable, and comprises signal attribute contacts such as AI 0-AI 15, P0.0-P0.7, P1.0-P1.7, P2.0-P2.7, AO0, AO1 and the like;

the interface X2 adopts J18A-15SQ socket and comprises various power supply voltages and power supply control signals, such as signal attribute contacts of +5V, +15V, v1+ -V4+, V1-V4-, and the like;

the interface X3 adopts a J30JA-100ZKW-J socket and comprises all input and output channel signals and power supply voltage signals: AI0+, AI0-, AI2+ -AI 15+, AI 2-AI 3-, COM 0-COM 7, CH 1-CH 7, DI0+ -DI 7+, DI 0-DI 7-, rw0+ -RW 7+, RW 0-RW 7-, -5v, +15v, v1+ -v4+, V1-V4-, AO0, AO1, GND, etc., all contacts of X3 are connected to the rear panel of the universal test system, and the connector model is J14A-101ZKB.

Taking a certain type of two-level distribution controller as an example, a special test cable is designed. The model two-level distribution controller has XP 1-XP 7 7 interfaces; the interface comprises 8 paths of control instructions such as 16 paths of power supply instructions, 10 paths of power conversion instructions, 30 paths of initiating explosive device protection contacts, 4 paths of battery power supply, 10 paths of state quantity, 8 paths of analog quantity, power conversion, take-off, control release and the like, and 4 paths of 422 interfaces are 3-sending and 1-receiving.

1) 16 paths of power supply instructions and 10 paths of power conversion instructions are 28V in voltage and are respectively connected into 26 state acquisition channels such as 1-DI 0-DI 7,2-DI 0-DI 7,3-DI 0-DI 7,4-DI 0-DI 1 and the like;

2) The common point of the 30 paths of initiating explosive device protection contacts is connected with +5V, and the other contacts are respectively connected with 30 analog acquisition channels such as 1-AI 5-AI 15,1-AI 20-AI 31,2-AI 4-AI 10 and the like;

3) 4 paths of battery power supply are respectively connected into 4 power-on and current collection channels of 1-COM0,2-COM0,3-COM0,4-COM0 and the like;

4) The 10-path state quantity and the 8-path analog quantity are 28V voltages, 1-CH 7,2-CH 1-CH 7 and 3-CH 1-CH 4 are connected to V1 (28V), and the 10-path state quantity and the 8-path analog quantity output ends are respectively connected to 14-path control signal output ends such as 1-COM 7,2-COM 1-COM 7 and 3-COM 1-COM 4;

5) 8 paths of control instructions such as power conversion, take-off, solution control and the like have 28V voltage and also have ground signals: for the control signal with the voltage attribute of 28V, the same CH end is connected with V1 (28V), and the COM is connected with the control signal; for the control signal of the ground signal attribute, the COM end is connected to GND, and the CH end is connected to the control signal.

6) The 3-way 1-way 422 interfaces are respectively connected with the receiving ends of the PXI serial ports 1 to 3, and the transmitting end of the PXI serial port 1.

In the universal test software, a product code of a certain type of power distribution controller is newly built, and all configuration files of the power distribution controller take the product code as a retrieval condition. Numerical parameters, state parameters, delay parameters, control instructions, test flows and test reports tested by a certain type of power distribution controller are respectively configured:

The numerical parameters include voltages V1-V4, currents V1-V4 and the like, and the setting interface is shown in FIG. 4.

The sampling rate is set to be 1kHz, namely the sampling rate of analog acquisition is 1kHz, the comprehensive sampling rate is 39kHz, namely 39k/1 k=39 analog acquisition channels are used in total, the comprehensive sampling rate is limited by the maximum sampling rate of the multifunctional acquisition card, and if the maximum sampling rate of the selected PXI-6229 multifunctional acquisition card in the example is 250kHz, the comprehensive sampling rate cannot exceed the value.

The numerical parameter 1 is V1 voltage, the channel number is AI0-1 (i.e. AI0 channel of the first multifunctional acquisition card), the conversion formula is x 8.565 (i.e. actual value=sampling value is 8.565), the upper limit 36 and the lower limit 24 indicate that after the universal test software operates, the V1 voltage is in the range of 24V-36V, the display precision is 2, i.e. the display value is 2 bits after decimal point, the starting state is lighting, which represents that the parameter is effective, and the display is displayed in the main interface.

The numerical parameter 2 is V1 current, the channel number is AI1-1 (i.e. AI1 channel of the first multifunctional acquisition card), the conversion formula is x 0.173-0.009 (i.e. actual value=sampling value 0.173-0.009), the upper limit is 0.5, the lower limit is-0.5, after the universal test software operates, the V1 current should be within the range of-0.5A, otherwise, the alarm is given by flashing; the display precision is 3, namely the display value is 2 bits after the decimal point, the enabled state is lighted to represent that the parameter is valid, and the parameter is displayed in the main interface. The numerical parameters 3 to 8 are configured with reference to the above method.

The state parameters comprise 30 paths of initiating explosive device protection states, 16 paths of power supply output states and 10 paths of power conversion output states, and the setting interface is shown in figure 5.

The state parameter 1 is fire protection 1, the channel is AI5-1 (namely AI5 channel of the first multifunctional acquisition card), the opening lower limit is 0.5, the opening upper limit is 5.0, the lighting color is bright green, the extinguishing color is dark green, namely when the AI5-1 acquisition value is in the range of 0.5-5.0, the fire protection 1 indicator lamp is displayed as bright green, otherwise, the initial state is lighted, the fire protection 1 is lighted after the universal test software operates, otherwise, the flash alarm is given, the starting state is lighted to represent that the parameter is valid, and the fire protection 1 indicator lamp is displayed in the main interface. The state parameters 2 to 30 are configured with reference to the above method.

The state parameter 31 is named as power supply 1, the channel is P2.0-1 (namely, the P2.0 channel of the first multifunctional acquisition card), when the channel is a digital channel, the upper limit/lower limit is invalid, the lighting color is bright green, the extinguishing color is dark green, namely, when the P2.0-1 acquisition state is high level, the power supply 1 indicator lamp is displayed as bright green, otherwise, the initial state is dark, after the universal test software operates, the power supply 1 is in the extinguishing state, otherwise, the alarm is given by flashing, the starting state is that the lighting represents that the parameter is valid, and the power supply 1 is displayed in the main interface. The state parameters 32 to 56 are configured with reference to the above-described method.

The delay parameters comprise the time from the turning on to the turning off of the 12-way indicator lamps from the power supply 9 to the power supply 16 and the power conversion 6 to the power conversion 9, and the setting interface is shown in figure 6.

The delay parameter 1 is named as power supply 9, the starting channel number is P0.29-1 (namely P0.29 channel of the first multifunctional acquisition card), the starting minimum value is 1, the starting maximum value is NaN (invalid), the starting duration point is 10, the starting jump is 0 (invalid), the stopping channel number is P0.29-1, the stopping minimum value is 0, the stopping maximum value is NaN (invalid), the stopping duration point is 1, the stopping jump is 0 (invalid), the delay minimum value is 0.2, the delay maximum value is 0.5, the delay correction value is 0.04, the delay precision is 2 bits, the upper limit of the power supply is 36V, the lower limit of the power supply is 22V, and the starting state is on.

The above settings mean: when the P0.29-1 channel state is high level and lasts for at least 10ms, and the current power supply voltage is in the range of 22V-36V, the power supply 9 is delayed to start timing; when the P0.29-1 channel state is low for at least 1ms and the current supply voltage is in the range of 22V-36V, the supply 9 is delayed to stop counting. And adding a correction value of 0.04 to the delay value of 9 power supply, displaying according to the decimal point and 2-bit precision, judging whether the delay value is in the range of 0.2 s-0.5 s, and if the delay value is out of tolerance, flashing and alarming. The delay parameter 2 to the state parameter 12 are configured with reference to the above method.

136 control instructions need to be established according to the test requirements of a certain type of distribution controller, and a setting method of 6 typical instructions is listed below.

As shown in fig. 7, the command name of the control command 1 is that the battery 1 is powered up, the command type is level, the command channel is P0.0-1, the command parameter is 1, the command numerical criterion includes that the upper limit of the voltage of V1 is 36V, the lower limit is 22V, the upper limit of the current of V1 is 2.0, the lower limit is 0.5, and the no-command state criterion is included. After the power-on instruction of the battery 1 is executed, P0.0-1 outputs high level, the current criterion is updated to be V1 voltage 22-36, and V1 current 0.5-2.0. Other control instructions for powering up and down the classes may refer to execution.

The instruction name of the control instruction 2 is initiating explosive device protection, the instruction type is pulse, the instruction channel is P0.6-2, the instruction parameter is 100, no instruction numerical criterion exists, and the instruction state criterion comprises that the initiating explosive device 1-30 state indicator lamps are lighted. After the initiating explosive device protection instruction is executed, P0.6-2 outputs positive pulse with the pulse width of 100ms, and the current criterion is updated to be that the initiating explosive device protection state indicator lamps from 1 to 30 are lighted. Other pulse-like control instructions may refer to execution.

The instruction name of the control instruction 3 is reset, the instruction type is reset, the instruction channel is invalid, the instruction parameter is 255, and no instruction numerical criterion and instruction state criterion exist. After the reset instruction is executed, all digital output channels of the multifunctional acquisition card are reset, and other control instructions of the reset type can be executed by referring to the execution.

The command name of the control command 4 is regulated to 28V, the command type is regulated, the command channel is AO0-1, the command parameter is 28.00, the command numerical criterion comprises the upper limit of the voltage of V1 is 28.5V, the lower limit is 27.5V, and the command-free state criterion is not required. After the 28V voltage regulation instruction is executed, AO0-1 regulates and outputs a voltage regulation signal according to the V1 power supply voltage until the V1 power supply voltage is changed into a range of 28.00V plus or minus 0.5V, and the current criterion is updated to be the V1 voltage of 27.50-28.50. Other control instructions for the voltage regulation class may be referenced for execution.

The instruction name of the control instruction 5 is a record parameter, the instruction type is waiting, the instruction channel and the instruction parameter are invalid, and no instruction numerical criterion and instruction state criterion exist. After the recording parameter instruction is executed, the software has no action, and the current criterion is updated. The waiting class instruction is generally used for triggering instructions of report parameters or used for updating current criteria, and other control instructions of the waiting class can refer to execution.

The control instruction 6 has an instruction name of unlocking, the instruction type is serial port, the instruction channel is serial port A, the instruction parameters are invalid, no instruction numerical criterion exists, and the instruction state criterion comprises that an unlocking state indicator lamp is lighted. After the unlocking instruction is executed, the software searches a serial port instruction list, the inquired instruction source code is sent out through the serial port A, and the current criterion is updated to be that the unlocking state indicator lamp is lighted. Other serial port class control instructions may refer to execution.

Various test flows are compiled for a certain type of distribution controller, and a unit test flow is taken as an example, and an interface is set as shown in fig. 8.

The flow name is unit test, control instructions are sequentially selected from a control command list, reasonable delay time is set, the completion of instruction execution and stable state of the power distribution controller are ensured, and then the next instruction is executed. The sequence of the test flow is generally power supply power-up, power supply voltage regulation, product power-up, various excitation signals are added, various parameters in the test process are recorded, various excitation signals are cut off, the product is powered off, the power supply is powered off, the test system is reset, a test report is generated, a certain type of power distribution controller unit test contains 104 instructions in total, and other flows can be executed by referring to.

According to the test report requirement of a certain type of distribution controller, 136 report parameters are required to be established, and 3 typical report parameter setting methods are listed below.

As shown in fig. 9, the report parameter 1 has a parameter name of a test item, a related variable of the test item, row=3, column=2, a trigger instruction of a recording parameter, an upper power limit of 36V, a lower power limit of 22V, and a waiting time of 500 (units ms). When the general test software detects that the instruction of recording parameters is executed, if the current power supply voltage is in the range of 22V-36V, the current value of a variable 'test item' is recorded after the time delay is 500ms, and the value is filled into the 3 rd row and the 2 nd column unit cells of the test report when the report is generated. The environmental parameter class report parameters may refer to execution.

The report parameter 9 has the parameter name of battery 1 current, the related variable is V1 current, row=12, column=7, the triggering instruction is to power up the battery 1, the upper power limit is 28.5V, the lower power limit is 27.5V, and the waiting time is 500 (units ms). When the general test software detects that the power-on instruction of the battery 1 is executed, if the current power supply voltage is in the range of 27.5V-28.5V, the current value of the variable V1 current is recorded after the time delay is 500ms, and the value is filled in the 12 th row and 7 th column of the test report when the report is generated. The numerical class report parameters may be referenced for execution.

The report parameter 124 has the parameter name of power supply bias state, the related variable is health state, row=36, column=6, the trigger instruction is to record bias state, the upper limit of power supply is 24.5V, the lower limit of power supply is 25.5V, and the waiting time is 500 (unit ms). After the general test software detects that the instruction for recording the bias state is executed, if the current power supply voltage is in the range of 24.5V-25.5V, the current state of the variable 'health state' is recorded after the delay time is 500ms, if the state is 'wire', the recording is normal, and if the state is 'false', the recording is abnormal. When generating the report, the value is filled in the 36 th row and the 6 th column of the test report. The state class report parameters may refer to execution.

When a certain type of distribution controller is tested, universal test software is run, the product code number of the type of distribution controller is selected, and the running is clicked to enter a test main interface. And controls such as numerical parameters, state parameters, delay parameters and the like in the main interface are displayed according to configuration, and the name and the corresponding actual value are displayed. Selecting a test flow as a unit test, executing control instructions in the flow in sequence, judging whether the test runs normally according to the current instruction criterion, and collecting report parameters meeting trigger conditions. After the process is executed, the report parameters collected in the test are filled into the test report according to the set position, and the test is completed.

It is to be appreciated that those skilled in the art will appreciate that various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" platform.

In addition, the embodiment of the application further provides a computer-readable storage medium, in which computer-executable instructions are stored, when the at least one processor of the user equipment executes the computer-executable instructions, the user equipment performs the above possible methods. Among them, computer-readable media include computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage media may be any available media that can be accessed by a general purpose or special purpose computer. An exemplary storage medium is coupled to the processor such the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. The processor and the storage medium may reside in an ASIC. In addition, the ASIC may reside in a user device. The processor and the storage medium may reside as discrete components in a communication device.

The present application also provides a program product comprising a computer program stored in a readable storage medium, from which the computer program can be read by at least one processor of a server, the at least one processor executing the computer program causing the server to implement the method according to any one of the embodiments of the present invention described above.

The program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium can be, for example, but is not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium would include the following: an electrical connection having one or more wires, a portable disk, a hard disk, random Access Memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The foregoing describes specific embodiments of the present invention. It is to be understood that the invention is not limited to the particular embodiments described above, and that various changes and modifications may be made by one skilled in the art within the scope of the claims without affecting the spirit of the invention.

Claims

1. A universal test system for a launch vehicle power distribution controller, comprising: the system comprises a PXI backboard, a PXI multifunctional acquisition card, a PXI serial port card, a PXI controller, a general control and conditioning module, an AC/DC program-controlled power supply, a custom test cable and a power distribution controller; the PXI backboard is respectively in communication connection with the PXI multifunctional acquisition card, the PXI serial port card and the PXI controller through the PXI bus; wherein:

2. A universal testing system for a launch vehicle power distribution controller according to claim 1, wherein said universal control and conditioning module has means for:

3. The universal test system for a launch vehicle power distribution controller of claim 1, wherein the custom test cable is specifically configured to:

4. The universal test system for a launch vehicle power distribution controller as recited in claim 1, wherein the universal test software in the PXI controller is specifically configured to:

5. A universal test system for a launch vehicle power distribution controller according to claim 1, wherein the AC/DC programmable power supply is adapted to output +5v, +15v, and 23V to 39V supply voltages.