CN114047430A - Circuit module interface bus control logic enumeration technique - Google Patents
Circuit module interface bus control logic enumeration technique Download PDFInfo
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- CN114047430A CN114047430A CN202111294497.9A CN202111294497A CN114047430A CN 114047430 A CN114047430 A CN 114047430A CN 202111294497 A CN202111294497 A CN 202111294497A CN 114047430 A CN114047430 A CN 114047430A
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- 238000005516 engineering process Methods 0.000 claims abstract description 14
- 210000001520 comb Anatomy 0.000 claims description 7
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 14
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000012423 maintenance Methods 0.000 abstract description 7
- 238000011161 development Methods 0.000 abstract description 2
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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Abstract
The invention discloses a circuit module interface bus control logic enumeration technology, which relates to the technical field of circuit detection and comprises enumeration software, a general computer platform, a digital IO module, a circuit module debugging tool and a programmable logic control circuit; the circuit module interface bus control logic enumeration technology enables a programmable logic control circuit to be abstracted into a black box according to needs, an enumeration system is constructed by enumeration software, a general computer platform, a digital IO module, a circuit module debugging tool and the programmable logic control circuit, so that a circuit module interface bus truth table is obtained through the enumeration system, secondary development circuit module testing tools and equipment can be carried out by means of the truth table, circuit module function detection and repair are realized, the fault location efficiency of a circuit module can be improved, the maintenance cost is reduced, and the SRU testing maintenance depth is improved.
Description
Technical Field
The invention relates to the technical field of circuit detection, in particular to a circuit module interface bus control logic enumeration technology.
Background
A circuit module for special use is abbreviated as SRU, and a product having a specific function composed of a plurality of SRUs is called LRU. Typically, there are multiple types of SRUs in an LRU, such as power modules, IO modules, controller modules, communication modules, data processing modules, and the like. The power module provides power support for other SRUs, the IO module, the communication module, the data processing module and the like are crosslinked with the controller module through a motherboard bus (LBE), and the LRU function is completed under the control of the controller module. The SRUs, such as IO modules, communication modules, data processing modules, etc., are often referred to as LRU's. This type of SRU usually contains programmable logic devices (GAL, CPLD) for implementing backplane bus decoding.
The SRU typically contains a non-bus interface and a bus interface. The non-bus interface is a collection of various types of signals, including discrete quantity signals ("28V/on" signals, "ground/on" signals, "28V/ground" signals, various level signals), analog signals (various voltage change signals), PWM signals, and the like, and is also called a functional interface of the module, and is mainly responsible for functional transmission of the circuit module. The bus interface is a collection of various digital signals, and is divided into three types according to functions, namely a data bus, an address bus and a control bus (including enabling signals, reading signals and the like), and the bus interface mainly bears the external communication and control functions of the circuit module.
In the prior art, for testing and maintaining the SRU, the SRU is generally installed in the LRU, the LRU is electrified and detected by using detection equipment (ATE), and signals such as voltage, current, resistance and the like on the SRU are detected by using general instruments such as an oscilloscope, a universal meter and the like in the detection process, so as to judge and position a fault device of the SRU. This technique has the following disadvantages:
(1) expensive test equipment (ATE) is required;
(2) are requiring expensive LRUs;
(3) the manual positioning failure efficiency is low;
(4) the maintenance cost is high.
In order to solve the problems, a universal test platform can be developed, and the dynamic test and the fault quick repair of the SRU can be realized without the support of ATE and LRU. The premise of developing the universal test platform of the SRU is to master the control logic of the SRU interface bus, and the control logic is usually described in languages such as VHDL, HDL and the like and is burned in programmable logic chips such as GAL, CPLD and the like. For an SRU including a (programmable) logic control circuit, it is difficult to control the input and output of module functions through a circuit module bus interface by means of external devices without mastering the internal control logic (i.e., the bus interface truth table) of the programmable logic circuit.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a circuit module interface bus control logic enumeration technology, and solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: the circuit module interface bus control logic enumeration technology comprises enumeration software, a general computer platform, a digital IO module, a circuit module debugging tool and a programmable logic control circuit;
the general computer platform is used for providing an electrical connection interface of the digital IO module and providing an enumeration software operation platform;
the digital IO module is used for executing digital signal input and output under the control of enumeration software;
the circuit module debugging tool is used for the work of connector adaptation, signal transfer, level conversion, circuit module power supply and the like;
the programmable logic control circuit is used for analyzing and combing the input signal and the output signal of the programmable logic control circuit to perform function abstraction.
Optionally, a plurality of logic functions are arranged in the programmable logic control circuit.
Optionally, the signal input by the programmable logic control circuit is set as an input signal, the input signal is defined as I [0 … N ], the signal output by the programmable logic control circuit is set as an output signal, and the output signal is defined as O [0 … M ].
Optionally, the digital IO module provided by the general computer platform is electrically connected to an interface, such as PCI, PXI, PXIe, or the like.
Optionally, the programmable logic control circuit analyzes and combs out input signals of the input signals and output signals of the programmable logic control circuit, wherein the input signals are input signals of a control bus, an address bus and the like.
Optionally, the programmable logic control circuit analyzes and combs out an output signal of the input signal and the output signal as a chip selection signal, a control signal, and the like.
The invention provides a circuit module interface bus control logic enumeration technology, which has the following beneficial effects:
the circuit module interface bus control logic enumeration technology enables a programmable logic control circuit to be abstracted into a black box according to needs, an enumeration system is constructed by enumeration software, a general computer platform, a digital IO module, a circuit module debugging tool and the programmable logic control circuit, so that a circuit module interface bus truth table is obtained through the enumeration system, secondary development circuit module testing tools and equipment can be carried out by means of the truth table, circuit module function detection and repair are realized, the fault location efficiency of a circuit module can be improved, the maintenance cost is reduced, and the SRU testing maintenance depth is improved.
Drawings
FIG. 1 is a schematic block diagram of a circuit module interface according to the present invention;
FIG. 2 is a diagram of an enumeration system of the present invention;
FIG. 3 is a schematic diagram of a "black box" abstraction of the programmable logic control circuit of the present invention.
In the figure: 1. enumerating software; 2. a general purpose computer platform; 3. a digital IO module; 4. debugging tooling of the circuit module; 5. a programmable logic control circuit; 6. a logic function.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Examples
Referring to fig. 1 to 3, the present invention provides a technical solution: the circuit module interface bus control logic enumeration technology comprises enumeration software 1, a general computer platform 2, a digital IO module 3, a circuit module debugging tool 4 and a programmable logic control circuit 5;
the general computer platform 2 is used for providing an electrical connection interface of the digital IO module 3 and providing an operation platform of the enumeration software 1;
the digital IO module 3 is used for executing digital signal input and output under the control of the enumeration software 1;
the circuit module debugging tool 4 is used for the work of connector adaptation, signal transfer, level conversion, circuit module power supply and the like;
and the programmable logic control circuit 5 is used for analyzing and combing the input signals and the output signals of the programmable logic control circuit to perform function abstraction.
Those skilled in the art can recognize that the circuit module interface bus control logic enumeration technology provided in this embodiment abstracts the programmable logic control circuit 5 into a "black box" by the logic control unit of the SRU, and analyzes and combs out the input signal I [0.. N ] and the output signal O [0.. M ] of the programmable logic control circuit 5. The IO pins in the digital IO module 3 are connected one by one with the input signals I0. N and the output signals O0. M of the programmable logic control circuit 5 by means of the circuit module debugging tool 4. And then, controlling the digital IO module 3 to rapidly traverse the address space represented by I [0.. N ] by using the general computer platform 2 and the enumeration software 1, wherein the address space range is as follows: the power of N from 0 to 2, after each time of outputting enumeration address, recording O0 … M input result, and identifying O k (where 0< k < M) is valid according to the two-dimensional matrix between I0 … N and O0 … M recorded by the enumeration software 1, where the value range of corresponding I is the address space, which is also called the truth table of the circuit module interface bus. Based on the truth table, the automatic test technology of the circuit module can be developed for the second time, so that the aims of detecting and repairing the functions of the circuit module can be fulfilled without expensive detection equipment and expensive LRU, the fault location efficiency of the circuit module can be obviously improved, the maintenance cost is reduced, and the test and maintenance depth of the circuit module is improved.
Optionally, a plurality of logic functions 6 are arranged inside the programmable logic control circuit 5.
Those skilled in the art can appreciate that a logic function 6 can be added inside the programmable logic control circuit 5 according to needs, so that the programmable logic control circuit 5 can completely simulate or express the interface bus function of the circuit module.
Optionally, the signal input by the programmable logic control circuit 5 is set as an input signal, the input signal is defined as I [0 … N ], the signal output by the programmable logic control circuit 5 is set as an output signal, and the output signal is defined as O [0 … M ].
It can be considered by those skilled in the art that the enumeration software 1 can control the digital IO module 3 to quickly traverse the address space represented by I [0.. N ], after outputting an enumeration address, record an O [0 … M ] input result, thereby obtaining a two-dimensional matrix between I [0 … N ] and O [0 … M ], and when identifying O [ k ] (where 0< k < M) is valid, a value range corresponding to I, that is, the address space, is also called the circuit module interface bus truth table.
Optionally, the digital IO module 3 provided by the general computer platform 2 is electrically connected to an interface, such as PCI, PXI, PXIe, or the like.
Those skilled in the art can think that the IO pins in the digital IO module 3 can be connected to the input signal I [0.. N ] and the output signal O [0.. M ] of the programmable logic control circuit 5 one by one, and further, the address space of the circuit module can be obtained by enumerating the software 1, so as to obtain the truth table of the interface bus of the circuit module.
Optionally, the programmable logic control circuit 5 analyzes and combs out the input signal of the input signal and the output signal of the programmable logic control circuit, which is the input signal of the control bus, the address bus, and the like.
Those skilled in the art can recognize that the enumeration software 1 controls the digital IO module 3 to rapidly traverse the address space represented by I [0.. N ], so as to obtain the input result of record O [0 … M ], and further obtain the truth table of the circuit module interface bus.
Optionally, the programmable logic control circuit 5 analyzes and combs out an output signal of the input signal and the output signal as a chip selection signal, a control signal, and the like.
Those skilled in the art can recognize that the address space and the control signal set obtained by the present technology are the truth table of the interface bus of the circuit module, and the test technology or test equipment of the circuit module developed secondarily according to the truth table is applied to the repair operation of the SRU, which is helpful to reduce the repair cost of the SRU and improve the test and repair depth of the SRU.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (6)
1. The circuit module interface bus control logic enumeration technology is characterized in that: the system comprises enumeration software (1), a general computer platform (2), a digital IO module (3), a circuit module debugging tool (4) and a programmable logic control circuit (5);
the general computer platform (2) is used for providing an electrical connection interface of the digital IO module (3) and providing an enumeration software (1) operation platform;
the digital IO module (3) is used for performing digital signal input and output under the control of the enumeration software (1);
the circuit module debugging tool (4) is used for the work of connector adaptation, signal transfer, level conversion, circuit module power supply and the like;
and the programmable logic control circuit (5) is used for analyzing and combing the input signal and the output signal of the programmable logic control circuit to perform function abstraction.
2. The circuit module interface bus control logic enumeration technique of claim 1, wherein: the programmable logic control circuit (5) is internally provided with a plurality of logic functions (6).
3. The circuit module interface bus control logic enumeration technique of claim 1, wherein: the signal input by the programmable logic control circuit (5) is set as an input signal, the input signal is defined as I [0 … N ], the signal output by the programmable logic control circuit (5) is set as an output signal, and the output signal is defined as O [0 … M ].
4. The circuit module interface bus control logic enumeration technique of claim 1, wherein: the digital IO module (3) provided by the general computer platform (2) is electrically connected with interfaces, such as PCI, PXI, PXIe and the like.
5. The circuit module interface bus control logic enumeration technique of claim 1, wherein: the programmable logic control circuit (5) analyzes and combs out input signals and output signals of the programmable logic control circuit, wherein the input signals are input signals of a control bus, an address bus and the like.
6. The circuit module interface bus control logic enumeration technique of claim 1, wherein: the programmable logic control circuit (5) analyzes and combs out signals of which the output signals are chip selection signals, control signals and the like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294497.9A CN114047430A (en) | 2021-11-03 | 2021-11-03 | Circuit module interface bus control logic enumeration technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111294497.9A CN114047430A (en) | 2021-11-03 | 2021-11-03 | Circuit module interface bus control logic enumeration technique |
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| Publication Number | Publication Date |
|---|---|
| CN114047430A true CN114047430A (en) | 2022-02-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111294497.9A Withdrawn CN114047430A (en) | 2021-11-03 | 2021-11-03 | Circuit module interface bus control logic enumeration technique |
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| CN (1) | CN114047430A (en) |
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2021
- 2021-11-03 CN CN202111294497.9A patent/CN114047430A/en not_active Withdrawn
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Application publication date: 20220215 |
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